diff options
116 files changed, 13611 insertions, 11909 deletions
diff --git a/arch/powerpc/platforms/cell/spufs/inode.c b/arch/powerpc/platforms/cell/spufs/inode.c index f390042..87ba7cf 100644 --- a/arch/powerpc/platforms/cell/spufs/inode.c +++ b/arch/powerpc/platforms/cell/spufs/inode.c @@ -620,12 +620,16 @@ spufs_parse_options(struct super_block *sb, char *options, struct inode *root) case Opt_uid: if (match_int(&args[0], &option)) return 0; - root->i_uid = option; + root->i_uid = make_kuid(current_user_ns(), option); + if (!uid_valid(root->i_uid)) + return 0; break; case Opt_gid: if (match_int(&args[0], &option)) return 0; - root->i_gid = option; + root->i_gid = make_kgid(current_user_ns(), option); + if (!gid_valid(root->i_gid)) + return 0; break; case Opt_mode: if (match_octal(&args[0], &option)) diff --git a/fs/quota/quota.c b/fs/quota/quota.c index c7314f1..dea86e8 100644 --- a/fs/quota/quota.c +++ b/fs/quota/quota.c @@ -27,6 +27,7 @@ static int check_quotactl_permission(struct super_block *sb, int type, int cmd, case Q_SYNC: case Q_GETINFO: case Q_XGETQSTAT: + case Q_XGETQSTATV: case Q_XQUOTASYNC: break; /* allow to query information for dquots we "own" */ @@ -217,6 +218,31 @@ static int quota_getxstate(struct super_block *sb, void __user *addr) return ret; } +static int quota_getxstatev(struct super_block *sb, void __user *addr) +{ + struct fs_quota_statv fqs; + int ret; + + if (!sb->s_qcop->get_xstatev) + return -ENOSYS; + + memset(&fqs, 0, sizeof(fqs)); + if (copy_from_user(&fqs, addr, 1)) /* Just read qs_version */ + return -EFAULT; + + /* If this kernel doesn't support user specified version, fail */ + switch (fqs.qs_version) { + case FS_QSTATV_VERSION1: + break; + default: + return -EINVAL; + } + ret = sb->s_qcop->get_xstatev(sb, &fqs); + if (!ret && copy_to_user(addr, &fqs, sizeof(fqs))) + return -EFAULT; + return ret; +} + static int quota_setxquota(struct super_block *sb, int type, qid_t id, void __user *addr) { @@ -293,6 +319,8 @@ static int do_quotactl(struct super_block *sb, int type, int cmd, qid_t id, return quota_setxstate(sb, cmd, addr); case Q_XGETQSTAT: return quota_getxstate(sb, addr); + case Q_XGETQSTATV: + return quota_getxstatev(sb, addr); case Q_XSETQLIM: return quota_setxquota(sb, type, id, addr); case Q_XGETQUOTA: @@ -317,6 +345,7 @@ static int quotactl_cmd_write(int cmd) case Q_GETINFO: case Q_SYNC: case Q_XGETQSTAT: + case Q_XGETQSTATV: case Q_XGETQUOTA: case Q_XQUOTASYNC: return 0; diff --git a/fs/xfs/Makefile b/fs/xfs/Makefile index 4a45080..0719e4d 100644 --- a/fs/xfs/Makefile +++ b/fs/xfs/Makefile @@ -27,9 +27,12 @@ xfs-y += xfs_trace.o # highlevel code xfs-y += xfs_aops.o \ + xfs_attr_inactive.o \ + xfs_attr_list.o \ xfs_bit.o \ + xfs_bmap_util.o \ xfs_buf.o \ - xfs_dfrag.o \ + xfs_dir2_readdir.o \ xfs_discard.o \ xfs_error.o \ xfs_export.o \ @@ -44,11 +47,11 @@ xfs-y += xfs_aops.o \ xfs_iops.o \ xfs_itable.o \ xfs_message.o \ + xfs_mount.o \ xfs_mru_cache.o \ - xfs_rename.o \ xfs_super.o \ - xfs_utils.o \ - xfs_vnodeops.o \ + xfs_symlink.o \ + xfs_trans.o \ xfs_xattr.o \ kmem.o \ uuid.o @@ -73,10 +76,13 @@ xfs-y += xfs_alloc.o \ xfs_ialloc_btree.o \ xfs_icreate_item.o \ xfs_inode.o \ + xfs_inode_fork.o \ + xfs_inode_buf.o \ xfs_log_recover.o \ - xfs_mount.o \ - xfs_symlink.o \ - xfs_trans.o + xfs_log_rlimit.o \ + xfs_sb.o \ + xfs_symlink_remote.o \ + xfs_trans_resv.o # low-level transaction/log code xfs-y += xfs_log.o \ diff --git a/fs/xfs/xfs_acl.c b/fs/xfs/xfs_acl.c index 306d883..6951896 100644 --- a/fs/xfs/xfs_acl.c +++ b/fs/xfs/xfs_acl.c @@ -16,11 +16,13 @@ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #include "xfs.h" +#include "xfs_log_format.h" +#include "xfs_trans_resv.h" #include "xfs_acl.h" #include "xfs_attr.h" #include "xfs_bmap_btree.h" #include "xfs_inode.h" -#include "xfs_vnodeops.h" +#include "xfs_ag.h" #include "xfs_sb.h" #include "xfs_mount.h" #include "xfs_trace.h" @@ -68,14 +70,15 @@ xfs_acl_from_disk( switch (acl_e->e_tag) { case ACL_USER: + acl_e->e_uid = xfs_uid_to_kuid(be32_to_cpu(ace->ae_id)); + break; case ACL_GROUP: - acl_e->e_id = be32_to_cpu(ace->ae_id); + acl_e->e_gid = xfs_gid_to_kgid(be32_to_cpu(ace->ae_id)); break; case ACL_USER_OBJ: case ACL_GROUP_OBJ: case ACL_MASK: case ACL_OTHER: - acl_e->e_id = ACL_UNDEFINED_ID; break; default: goto fail; @@ -101,7 +104,18 @@ xfs_acl_to_disk(struct xfs_acl *aclp, const struct posix_acl *acl) acl_e = &acl->a_entries[i]; ace->ae_tag = cpu_to_be32(acl_e->e_tag); - ace->ae_id = cpu_to_be32(acl_e->e_id); + switch (acl_e->e_tag) { + case ACL_USER: + ace->ae_id = cpu_to_be32(xfs_kuid_to_uid(acl_e->e_uid)); + break; + case ACL_GROUP: + ace->ae_id = cpu_to_be32(xfs_kgid_to_gid(acl_e->e_gid)); + break; + default: + ace->ae_id = cpu_to_be32(ACL_UNDEFINED_ID); + break; + } + ace->ae_perm = cpu_to_be16(acl_e->e_perm); } } @@ -360,7 +374,7 @@ xfs_xattr_acl_set(struct dentry *dentry, const char *name, return -EINVAL; if (type == ACL_TYPE_DEFAULT && !S_ISDIR(inode->i_mode)) return value ? -EACCES : 0; - if ((current_fsuid() != inode->i_uid) && !capable(CAP_FOWNER)) + if (!inode_owner_or_capable(inode)) return -EPERM; if (!value) diff --git a/fs/xfs/xfs_ag.h b/fs/xfs/xfs_ag.h index 317aa86..1cb740a 100644 --- a/fs/xfs/xfs_ag.h +++ b/fs/xfs/xfs_ag.h @@ -227,59 +227,6 @@ typedef struct xfs_agfl { } xfs_agfl_t; /* - * Per-ag incore structure, copies of information in agf and agi, - * to improve the performance of allocation group selection. - */ -#define XFS_PAGB_NUM_SLOTS 128 - -typedef struct xfs_perag { - struct xfs_mount *pag_mount; /* owner filesystem */ - xfs_agnumber_t pag_agno; /* AG this structure belongs to */ - atomic_t pag_ref; /* perag reference count */ - char pagf_init; /* this agf's entry is initialized */ - char pagi_init; /* this agi's entry is initialized */ - char pagf_metadata; /* the agf is preferred to be metadata */ - char pagi_inodeok; /* The agi is ok for inodes */ - __uint8_t pagf_levels[XFS_BTNUM_AGF]; - /* # of levels in bno & cnt btree */ - __uint32_t pagf_flcount; /* count of blocks in freelist */ - xfs_extlen_t pagf_freeblks; /* total free blocks */ - xfs_extlen_t pagf_longest; /* longest free space */ - __uint32_t pagf_btreeblks; /* # of blocks held in AGF btrees */ - xfs_agino_t pagi_freecount; /* number of free inodes */ - xfs_agino_t pagi_count; /* number of allocated inodes */ - - /* - * Inode allocation search lookup optimisation. - * If the pagino matches, the search for new inodes - * doesn't need to search the near ones again straight away - */ - xfs_agino_t pagl_pagino; - xfs_agino_t pagl_leftrec; - xfs_agino_t pagl_rightrec; -#ifdef __KERNEL__ - spinlock_t pagb_lock; /* lock for pagb_tree */ - struct rb_root pagb_tree; /* ordered tree of busy extents */ - - atomic_t pagf_fstrms; /* # of filestreams active in this AG */ - - spinlock_t pag_ici_lock; /* incore inode cache lock */ - struct radix_tree_root pag_ici_root; /* incore inode cache root */ - int pag_ici_reclaimable; /* reclaimable inodes */ - struct mutex pag_ici_reclaim_lock; /* serialisation point */ - unsigned long pag_ici_reclaim_cursor; /* reclaim restart point */ - - /* buffer cache index */ - spinlock_t pag_buf_lock; /* lock for pag_buf_tree */ - struct rb_root pag_buf_tree; /* ordered tree of active buffers */ - - /* for rcu-safe freeing */ - struct rcu_head rcu_head; -#endif - int pagb_count; /* pagb slots in use */ -} xfs_perag_t; - -/* * tags for inode radix tree */ #define XFS_ICI_NO_TAG (-1) /* special flag for an untagged lookup diff --git a/fs/xfs/xfs_alloc.c b/fs/xfs/xfs_alloc.c index 71596e5..5a1393f 100644 --- a/fs/xfs/xfs_alloc.c +++ b/fs/xfs/xfs_alloc.c @@ -878,7 +878,7 @@ xfs_alloc_ag_vextent_near( xfs_agblock_t ltnew; /* useful start bno of left side */ xfs_extlen_t rlen; /* length of returned extent */ int forced = 0; -#if defined(DEBUG) && defined(__KERNEL__) +#ifdef DEBUG /* * Randomly don't execute the first algorithm. */ @@ -938,8 +938,8 @@ restart: xfs_extlen_t blen=0; xfs_agblock_t bnew=0; -#if defined(DEBUG) && defined(__KERNEL__) - if (!dofirst) +#ifdef DEBUG + if (dofirst) break; #endif /* diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c index e11d654..977da0e 100644 --- a/fs/xfs/xfs_aops.c +++ b/fs/xfs/xfs_aops.c @@ -28,9 +28,9 @@ #include "xfs_alloc.h" #include "xfs_error.h" #include "xfs_iomap.h" -#include "xfs_vnodeops.h" #include "xfs_trace.h" #include "xfs_bmap.h" +#include "xfs_bmap_util.h" #include <linux/aio.h> #include <linux/gfp.h> #include <linux/mpage.h> @@ -108,7 +108,7 @@ xfs_setfilesize_trans_alloc( tp = xfs_trans_alloc(mp, XFS_TRANS_FSYNC_TS); - error = xfs_trans_reserve(tp, 0, XFS_FSYNC_TS_LOG_RES(mp), 0, 0, 0); + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_fsyncts, 0, 0); if (error) { xfs_trans_cancel(tp, 0); return error; @@ -440,7 +440,7 @@ xfs_start_page_writeback( end_page_writeback(page); } -static inline int bio_add_buffer(struct bio *bio, struct buffer_head *bh) +static inline int xfs_bio_add_buffer(struct bio *bio, struct buffer_head *bh) { return bio_add_page(bio, bh->b_page, bh->b_size, bh_offset(bh)); } @@ -514,7 +514,7 @@ xfs_submit_ioend( goto retry; } - if (bio_add_buffer(bio, bh) != bh->b_size) { + if (xfs_bio_add_buffer(bio, bh) != bh->b_size) { xfs_submit_ioend_bio(wbc, ioend, bio); goto retry; } @@ -1498,13 +1498,26 @@ xfs_vm_write_failed( loff_t pos, unsigned len) { - loff_t block_offset = pos & PAGE_MASK; + loff_t block_offset; loff_t block_start; loff_t block_end; loff_t from = pos & (PAGE_CACHE_SIZE - 1); loff_t to = from + len; struct buffer_head *bh, *head; + /* + * The request pos offset might be 32 or 64 bit, this is all fine + * on 64-bit platform. However, for 64-bit pos request on 32-bit + * platform, the high 32-bit will be masked off if we evaluate the + * block_offset via (pos & PAGE_MASK) because the PAGE_MASK is + * 0xfffff000 as an unsigned long, hence the result is incorrect + * which could cause the following ASSERT failed in most cases. + * In order to avoid this, we can evaluate the block_offset of the + * start of the page by using shifts rather than masks the mismatch + * problem. + */ + block_offset = (pos >> PAGE_CACHE_SHIFT) << PAGE_CACHE_SHIFT; + ASSERT(block_offset + from == pos); head = page_buffers(page); diff --git a/fs/xfs/xfs_attr.c b/fs/xfs/xfs_attr.c index 20fe3fe..ddcf226 100644 --- a/fs/xfs/xfs_attr.c +++ b/fs/xfs/xfs_attr.c @@ -17,10 +17,11 @@ */ #include "xfs.h" #include "xfs_fs.h" -#include "xfs_types.h" +#include "xfs_format.h" #include "xfs_bit.h" #include "xfs_log.h" #include "xfs_trans.h" +#include "xfs_trans_priv.h" #include "xfs_sb.h" #include "xfs_ag.h" #include "xfs_mount.h" @@ -32,13 +33,13 @@ #include "xfs_alloc.h" #include "xfs_inode_item.h" #include "xfs_bmap.h" +#include "xfs_bmap_util.h" #include "xfs_attr.h" #include "xfs_attr_leaf.h" #include "xfs_attr_remote.h" #include "xfs_error.h" #include "xfs_quota.h" #include "xfs_trans_space.h" -#include "xfs_vnodeops.h" #include "xfs_trace.h" /* @@ -62,7 +63,6 @@ STATIC int xfs_attr_shortform_addname(xfs_da_args_t *args); STATIC int xfs_attr_leaf_get(xfs_da_args_t *args); STATIC int xfs_attr_leaf_addname(xfs_da_args_t *args); STATIC int xfs_attr_leaf_removename(xfs_da_args_t *args); -STATIC int xfs_attr_leaf_list(xfs_attr_list_context_t *context); /* * Internal routines when attribute list is more than one block. @@ -70,7 +70,6 @@ STATIC int xfs_attr_leaf_list(xfs_attr_list_context_t *context); STATIC int xfs_attr_node_get(xfs_da_args_t *args); STATIC int xfs_attr_node_addname(xfs_da_args_t *args); STATIC int xfs_attr_node_removename(xfs_da_args_t *args); -STATIC int xfs_attr_node_list(xfs_attr_list_context_t *context); STATIC int xfs_attr_fillstate(xfs_da_state_t *state); STATIC int xfs_attr_refillstate(xfs_da_state_t *state); @@ -90,7 +89,7 @@ xfs_attr_name_to_xname( return 0; } -STATIC int +int xfs_inode_hasattr( struct xfs_inode *ip) { @@ -227,13 +226,14 @@ xfs_attr_set_int( int valuelen, int flags) { - xfs_da_args_t args; - xfs_fsblock_t firstblock; - xfs_bmap_free_t flist; - int error, err2, committed; - xfs_mount_t *mp = dp->i_mount; - int rsvd = (flags & ATTR_ROOT) != 0; - int local; + xfs_da_args_t args; + xfs_fsblock_t firstblock; + xfs_bmap_free_t flist; + int error, err2, committed; + struct xfs_mount *mp = dp->i_mount; + struct xfs_trans_res tres; + int rsvd = (flags & ATTR_ROOT) != 0; + int local; /* * Attach the dquots to the inode. @@ -293,11 +293,11 @@ xfs_attr_set_int( if (rsvd) args.trans->t_flags |= XFS_TRANS_RESERVE; - error = xfs_trans_reserve(args.trans, args.total, - XFS_ATTRSETM_LOG_RES(mp) + - XFS_ATTRSETRT_LOG_RES(mp) * args.total, - 0, XFS_TRANS_PERM_LOG_RES, - XFS_ATTRSET_LOG_COUNT); + tres.tr_logres = M_RES(mp)->tr_attrsetm.tr_logres + + M_RES(mp)->tr_attrsetrt.tr_logres * args.total; + tres.tr_logcount = XFS_ATTRSET_LOG_COUNT; + tres.tr_logflags = XFS_TRANS_PERM_LOG_RES; + error = xfs_trans_reserve(args.trans, &tres, args.total, 0); if (error) { xfs_trans_cancel(args.trans, 0); return(error); @@ -517,11 +517,9 @@ xfs_attr_remove_int(xfs_inode_t *dp, struct xfs_name *name, int flags) if (flags & ATTR_ROOT) args.trans->t_flags |= XFS_TRANS_RESERVE; - if ((error = xfs_trans_reserve(args.trans, - XFS_ATTRRM_SPACE_RES(mp), - XFS_ATTRRM_LOG_RES(mp), - 0, XFS_TRANS_PERM_LOG_RES, - XFS_ATTRRM_LOG_COUNT))) { + error = xfs_trans_reserve(args.trans, &M_RES(mp)->tr_attrrm, + XFS_ATTRRM_SPACE_RES(mp), 0); + if (error) { xfs_trans_cancel(args.trans, 0); return(error); } @@ -611,228 +609,6 @@ xfs_attr_remove( return xfs_attr_remove_int(dp, &xname, flags); } -int -xfs_attr_list_int(xfs_attr_list_context_t *context) -{ - int error; - xfs_inode_t *dp = context->dp; - - XFS_STATS_INC(xs_attr_list); - - if (XFS_FORCED_SHUTDOWN(dp->i_mount)) - return EIO; - - xfs_ilock(dp, XFS_ILOCK_SHARED); - - /* - * Decide on what work routines to call based on the inode size. - */ - if (!xfs_inode_hasattr(dp)) { - error = 0; - } else if (dp->i_d.di_aformat == XFS_DINODE_FMT_LOCAL) { - error = xfs_attr_shortform_list(context); - } else if (xfs_bmap_one_block(dp, XFS_ATTR_FORK)) { - error = xfs_attr_leaf_list(context); - } else { - error = xfs_attr_node_list(context); - } - - xfs_iunlock(dp, XFS_ILOCK_SHARED); - - return error; -} - -#define ATTR_ENTBASESIZE /* minimum bytes used by an attr */ \ - (((struct attrlist_ent *) 0)->a_name - (char *) 0) -#define ATTR_ENTSIZE(namelen) /* actual bytes used by an attr */ \ - ((ATTR_ENTBASESIZE + (namelen) + 1 + sizeof(u_int32_t)-1) \ - & ~(sizeof(u_int32_t)-1)) - -/* - * Format an attribute and copy it out to the user's buffer. - * Take care to check values and protect against them changing later, - * we may be reading them directly out of a user buffer. - */ -/*ARGSUSED*/ -STATIC int -xfs_attr_put_listent( - xfs_attr_list_context_t *context, - int flags, - unsigned char *name, - int namelen, - int valuelen, - unsigned char *value) -{ - struct attrlist *alist = (struct attrlist *)context->alist; - attrlist_ent_t *aep; - int arraytop; - - ASSERT(!(context->flags & ATTR_KERNOVAL)); - ASSERT(context->count >= 0); - ASSERT(context->count < (ATTR_MAX_VALUELEN/8)); - ASSERT(context->firstu >= sizeof(*alist)); - ASSERT(context->firstu <= context->bufsize); - - /* - * Only list entries in the right namespace. - */ - if (((context->flags & ATTR_SECURE) == 0) != - ((flags & XFS_ATTR_SECURE) == 0)) - return 0; - if (((context->flags & ATTR_ROOT) == 0) != - ((flags & XFS_ATTR_ROOT) == 0)) - return 0; - - arraytop = sizeof(*alist) + - context->count * sizeof(alist->al_offset[0]); - context->firstu -= ATTR_ENTSIZE(namelen); - if (context->firstu < arraytop) { - trace_xfs_attr_list_full(context); - alist->al_more = 1; - context->seen_enough = 1; - return 1; - } - - aep = (attrlist_ent_t *)&context->alist[context->firstu]; - aep->a_valuelen = valuelen; - memcpy(aep->a_name, name, namelen); - aep->a_name[namelen] = 0; - alist->al_offset[context->count++] = context->firstu; - alist->al_count = context->count; - trace_xfs_attr_list_add(context); - return 0; -} - -/* - * Generate a list of extended attribute names and optionally - * also value lengths. Positive return value follows the XFS - * convention of being an error, zero or negative return code - * is the length of the buffer returned (negated), indicating - * success. - */ -int -xfs_attr_list( - xfs_inode_t *dp, - char *buffer, - int bufsize, - int flags, - attrlist_cursor_kern_t *cursor) -{ - xfs_attr_list_context_t context; - struct attrlist *alist; - int error; - - /* - * Validate the cursor. - */ - if (cursor->pad1 || cursor->pad2) - return(XFS_ERROR(EINVAL)); - if ((cursor->initted == 0) && - (cursor->hashval || cursor->blkno || cursor->offset)) - return XFS_ERROR(EINVAL); - - /* - * Check for a properly aligned buffer. - */ - if (((long)buffer) & (sizeof(int)-1)) - return XFS_ERROR(EFAULT); - if (flags & ATTR_KERNOVAL) - bufsize = 0; - - /* - * Initialize the output buffer. - */ - memset(&context, 0, sizeof(context)); - context.dp = dp; - context.cursor = cursor; - context.resynch = 1; - context.flags = flags; - context.alist = buffer; - context.bufsize = (bufsize & ~(sizeof(int)-1)); /* align */ - context.firstu = context.bufsize; - context.put_listent = xfs_attr_put_listent; - - alist = (struct attrlist *)context.alist; - alist->al_count = 0; - alist->al_more = 0; - alist->al_offset[0] = context.bufsize; - - error = xfs_attr_list_int(&context); - ASSERT(error >= 0); - return error; -} - -int /* error */ -xfs_attr_inactive(xfs_inode_t *dp) -{ - xfs_trans_t *trans; - xfs_mount_t *mp; - int error; - - mp = dp->i_mount; - ASSERT(! XFS_NOT_DQATTACHED(mp, dp)); - - xfs_ilock(dp, XFS_ILOCK_SHARED); - if (!xfs_inode_hasattr(dp) || - dp->i_d.di_aformat == XFS_DINODE_FMT_LOCAL) { - xfs_iunlock(dp, XFS_ILOCK_SHARED); - return 0; - } - xfs_iunlock(dp, XFS_ILOCK_SHARED); - - /* - * Start our first transaction of the day. - * - * All future transactions during this code must be "chained" off - * this one via the trans_dup() call. All transactions will contain - * the inode, and the inode will always be marked with trans_ihold(). - * Since the inode will be locked in all transactions, we must log - * the inode in every transaction to let it float upward through - * the log. - */ - trans = xfs_trans_alloc(mp, XFS_TRANS_ATTRINVAL); - if ((error = xfs_trans_reserve(trans, 0, XFS_ATTRINVAL_LOG_RES(mp), 0, - XFS_TRANS_PERM_LOG_RES, - XFS_ATTRINVAL_LOG_COUNT))) { - xfs_trans_cancel(trans, 0); - return(error); - } - xfs_ilock(dp, XFS_ILOCK_EXCL); - - /* - * No need to make quota reservations here. We expect to release some - * blocks, not allocate, in the common case. - */ - xfs_trans_ijoin(trans, dp, 0); - - /* - * Decide on what work routines to call based on the inode size. - */ - if (!xfs_inode_hasattr(dp) || - dp->i_d.di_aformat == XFS_DINODE_FMT_LOCAL) { - error = 0; - goto out; - } - error = xfs_attr3_root_inactive(&trans, dp); - if (error) - goto out; - - error = xfs_itruncate_extents(&trans, dp, XFS_ATTR_FORK, 0); - if (error) - goto out; - - error = xfs_trans_commit(trans, XFS_TRANS_RELEASE_LOG_RES); - xfs_iunlock(dp, XFS_ILOCK_EXCL); - - return(error); - -out: - xfs_trans_cancel(trans, XFS_TRANS_RELEASE_LOG_RES|XFS_TRANS_ABORT); - xfs_iunlock(dp, XFS_ILOCK_EXCL); - return(error); -} - - /*======================================================================== * External routines when attribute list is inside the inode @@ -1166,28 +942,6 @@ xfs_attr_leaf_get(xfs_da_args_t *args) return error; } -/* - * Copy out attribute entries for attr_list(), for leaf attribute lists. - */ -STATIC int -xfs_attr_leaf_list(xfs_attr_list_context_t *context) -{ - int error; - struct xfs_buf *bp; - - trace_xfs_attr_leaf_list(context); - - context->cursor->blkno = 0; - error = xfs_attr3_leaf_read(NULL, context->dp, 0, -1, &bp); - if (error) - return XFS_ERROR(error); - - error = xfs_attr3_leaf_list_int(bp, context); - xfs_trans_brelse(NULL, bp); - return XFS_ERROR(error); -} - - /*======================================================================== * External routines when attribute list size > XFS_LBSIZE(mp). *========================================================================*/ @@ -1260,6 +1014,7 @@ restart: * have been a b-tree. */ xfs_da_state_free(state); + state = NULL; xfs_bmap_init(args->flist, args->firstblock); error = xfs_attr3_leaf_to_node(args); if (!error) { @@ -1780,143 +1535,3 @@ xfs_attr_node_get(xfs_da_args_t *args) xfs_da_state_free(state); return(retval); } - -STATIC int /* error */ -xfs_attr_node_list(xfs_attr_list_context_t *context) -{ - attrlist_cursor_kern_t *cursor; - xfs_attr_leafblock_t *leaf; - xfs_da_intnode_t *node; - struct xfs_attr3_icleaf_hdr leafhdr; - struct xfs_da3_icnode_hdr nodehdr; - struct xfs_da_node_entry *btree; - int error, i; - struct xfs_buf *bp; - - trace_xfs_attr_node_list(context); - - cursor = context->cursor; - cursor->initted = 1; - - /* - * Do all sorts of validation on the passed-in cursor structure. - * If anything is amiss, ignore the cursor and look up the hashval - * starting from the btree root. - */ - bp = NULL; - if (cursor->blkno > 0) { - error = xfs_da3_node_read(NULL, context->dp, cursor->blkno, -1, - &bp, XFS_ATTR_FORK); - if ((error != 0) && (error != EFSCORRUPTED)) - return(error); - if (bp) { - struct xfs_attr_leaf_entry *entries; - - node = bp->b_addr; - switch (be16_to_cpu(node->hdr.info.magic)) { - case XFS_DA_NODE_MAGIC: - case XFS_DA3_NODE_MAGIC: - trace_xfs_attr_list_wrong_blk(context); - xfs_trans_brelse(NULL, bp); - bp = NULL; - break; - case XFS_ATTR_LEAF_MAGIC: - case XFS_ATTR3_LEAF_MAGIC: - leaf = bp->b_addr; - xfs_attr3_leaf_hdr_from_disk(&leafhdr, leaf); - entries = xfs_attr3_leaf_entryp(leaf); - if (cursor->hashval > be32_to_cpu( - entries[leafhdr.count - 1].hashval)) { - trace_xfs_attr_list_wrong_blk(context); - xfs_trans_brelse(NULL, bp); - bp = NULL; - } else if (cursor->hashval <= be32_to_cpu( - entries[0].hashval)) { - trace_xfs_attr_list_wrong_blk(context); - xfs_trans_brelse(NULL, bp); - bp = NULL; - } - break; - default: - trace_xfs_attr_list_wrong_blk(context); - xfs_trans_brelse(NULL, bp); - bp = NULL; - } - } - } - - /* - * We did not find what we expected given the cursor's contents, - * so we start from the top and work down based on the hash value. - * Note that start of node block is same as start of leaf block. - */ - if (bp == NULL) { - cursor->blkno = 0; - for (;;) { - __uint16_t magic; - - error = xfs_da3_node_read(NULL, context->dp, - cursor->blkno, -1, &bp, - XFS_ATTR_FORK); - if (error) - return(error); - node = bp->b_addr; - magic = be16_to_cpu(node->hdr.info.magic); - if (magic == XFS_ATTR_LEAF_MAGIC || - magic == XFS_ATTR3_LEAF_MAGIC) - break; - if (magic != XFS_DA_NODE_MAGIC && - magic != XFS_DA3_NODE_MAGIC) { - XFS_CORRUPTION_ERROR("xfs_attr_node_list(3)", - XFS_ERRLEVEL_LOW, - context->dp->i_mount, - node); - xfs_trans_brelse(NULL, bp); - return XFS_ERROR(EFSCORRUPTED); - } - - xfs_da3_node_hdr_from_disk(&nodehdr, node); - btree = xfs_da3_node_tree_p(node); - for (i = 0; i < nodehdr.count; btree++, i++) { - if (cursor->hashval - <= be32_to_cpu(btree->hashval)) { - cursor->blkno = be32_to_cpu(btree->before); - trace_xfs_attr_list_node_descend(context, - btree); - break; - } - } - if (i == nodehdr.count) { - xfs_trans_brelse(NULL, bp); - return 0; - } - xfs_trans_brelse(NULL, bp); - } - } - ASSERT(bp != NULL); - - /* - * Roll upward through the blocks, processing each leaf block in - * order. As long as there is space in the result buffer, keep - * adding the information. - */ - for (;;) { - leaf = bp->b_addr; - error = xfs_attr3_leaf_list_int(bp, context); - if (error) { - xfs_trans_brelse(NULL, bp); - return error; - } - xfs_attr3_leaf_hdr_from_disk(&leafhdr, leaf); - if (context->seen_enough || leafhdr.forw == 0) - break; - cursor->blkno = leafhdr.forw; - xfs_trans_brelse(NULL, bp); - error = xfs_attr3_leaf_read(NULL, context->dp, cursor->blkno, -1, - &bp); - if (error) - return error; - } - xfs_trans_brelse(NULL, bp); - return 0; -} diff --git a/fs/xfs/xfs_attr.h b/fs/xfs/xfs_attr.h index de8dd58..dd48245 100644 --- a/fs/xfs/xfs_attr.h +++ b/fs/xfs/xfs_attr.h @@ -141,5 +141,14 @@ typedef struct xfs_attr_list_context { */ int xfs_attr_inactive(struct xfs_inode *dp); int xfs_attr_list_int(struct xfs_attr_list_context *); +int xfs_inode_hasattr(struct xfs_inode *ip); +int xfs_attr_get(struct xfs_inode *ip, const unsigned char *name, + unsigned char *value, int *valuelenp, int flags); +int xfs_attr_set(struct xfs_inode *dp, const unsigned char *name, + unsigned char *value, int valuelen, int flags); +int xfs_attr_remove(struct xfs_inode *dp, const unsigned char *name, int flags); +int xfs_attr_list(struct xfs_inode *dp, char *buffer, int bufsize, + int flags, struct attrlist_cursor_kern *cursor); + #endif /* __XFS_ATTR_H__ */ diff --git a/fs/xfs/xfs_attr_inactive.c b/fs/xfs/xfs_attr_inactive.c new file mode 100644 index 0000000..bb24b07 --- /dev/null +++ b/fs/xfs/xfs_attr_inactive.c @@ -0,0 +1,453 @@ +/* + * Copyright (c) 2000-2005 Silicon Graphics, Inc. + * Copyright (c) 2013 Red Hat, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include "xfs.h" +#include "xfs_fs.h" +#include "xfs_format.h" +#include "xfs_bit.h" +#include "xfs_log.h" +#include "xfs_trans.h" +#include "xfs_sb.h" +#include "xfs_ag.h" +#include "xfs_mount.h" +#include "xfs_da_btree.h" +#include "xfs_bmap_btree.h" +#include "xfs_alloc_btree.h" +#include "xfs_ialloc_btree.h" +#include "xfs_alloc.h" +#include "xfs_btree.h" +#include "xfs_attr_remote.h" +#include "xfs_dinode.h" +#include "xfs_inode.h" +#include "xfs_inode_item.h" +#include "xfs_bmap.h" +#include "xfs_attr.h" +#include "xfs_attr_leaf.h" +#include "xfs_error.h" +#include "xfs_quota.h" +#include "xfs_trace.h" +#include "xfs_trans_priv.h" + +/* + * Look at all the extents for this logical region, + * invalidate any buffers that are incore/in transactions. + */ +STATIC int +xfs_attr3_leaf_freextent( + struct xfs_trans **trans, + struct xfs_inode *dp, + xfs_dablk_t blkno, + int blkcnt) +{ + struct xfs_bmbt_irec map; + struct xfs_buf *bp; + xfs_dablk_t tblkno; + xfs_daddr_t dblkno; + int tblkcnt; + int dblkcnt; + int nmap; + int error; + + /* + * Roll through the "value", invalidating the attribute value's + * blocks. + */ + tblkno = blkno; + tblkcnt = blkcnt; + while (tblkcnt > 0) { + /* + * Try to remember where we decided to put the value. + */ + nmap = 1; + error = xfs_bmapi_read(dp, (xfs_fileoff_t)tblkno, tblkcnt, + &map, &nmap, XFS_BMAPI_ATTRFORK); + if (error) { + return(error); + } + ASSERT(nmap == 1); + ASSERT(map.br_startblock != DELAYSTARTBLOCK); + + /* + * If it's a hole, these are already unmapped + * so there's nothing to invalidate. + */ + if (map.br_startblock != HOLESTARTBLOCK) { + + dblkno = XFS_FSB_TO_DADDR(dp->i_mount, + map.br_startblock); + dblkcnt = XFS_FSB_TO_BB(dp->i_mount, + map.br_blockcount); + bp = xfs_trans_get_buf(*trans, + dp->i_mount->m_ddev_targp, + dblkno, dblkcnt, 0); + if (!bp) + return ENOMEM; + xfs_trans_binval(*trans, bp); + /* + * Roll to next transaction. + */ + error = xfs_trans_roll(trans, dp); + if (error) + return (error); + } + + tblkno += map.br_blockcount; + tblkcnt -= map.br_blockcount; + } + + return(0); +} + +/* + * Invalidate all of the "remote" value regions pointed to by a particular + * leaf block. + * Note that we must release the lock on the buffer so that we are not + * caught holding something that the logging code wants to flush to disk. + */ +STATIC int +xfs_attr3_leaf_inactive( + struct xfs_trans **trans, + struct xfs_inode *dp, + struct xfs_buf *bp) +{ + struct xfs_attr_leafblock *leaf; + struct xfs_attr3_icleaf_hdr ichdr; + struct xfs_attr_leaf_entry *entry; + struct xfs_attr_leaf_name_remote *name_rmt; + struct xfs_attr_inactive_list *list; + struct xfs_attr_inactive_list *lp; + int error; + int count; + int size; + int tmp; + int i; + + leaf = bp->b_addr; + xfs_attr3_leaf_hdr_from_disk(&ichdr, leaf); + + /* + * Count the number of "remote" value extents. + */ + count = 0; + entry = xfs_attr3_leaf_entryp(leaf); + for (i = 0; i < ichdr.count; entry++, i++) { + if (be16_to_cpu(entry->nameidx) && + ((entry->flags & XFS_ATTR_LOCAL) == 0)) { + name_rmt = xfs_attr3_leaf_name_remote(leaf, i); + if (name_rmt->valueblk) + count++; + } + } + + /* + * If there are no "remote" values, we're done. + */ + if (count == 0) { + xfs_trans_brelse(*trans, bp); + return 0; + } + + /* + * Allocate storage for a list of all the "remote" value extents. + */ + size = count * sizeof(xfs_attr_inactive_list_t); + list = kmem_alloc(size, KM_SLEEP); + + /* + * Identify each of the "remote" value extents. + */ + lp = list; + entry = xfs_attr3_leaf_entryp(leaf); + for (i = 0; i < ichdr.count; entry++, i++) { + if (be16_to_cpu(entry->nameidx) && + ((entry->flags & XFS_ATTR_LOCAL) == 0)) { + name_rmt = xfs_attr3_leaf_name_remote(leaf, i); + if (name_rmt->valueblk) { + lp->valueblk = be32_to_cpu(name_rmt->valueblk); + lp->valuelen = xfs_attr3_rmt_blocks(dp->i_mount, + be32_to_cpu(name_rmt->valuelen)); + lp++; + } + } + } + xfs_trans_brelse(*trans, bp); /* unlock for trans. in freextent() */ + + /* + * Invalidate each of the "remote" value extents. + */ + error = 0; + for (lp = list, i = 0; i < count; i++, lp++) { + tmp = xfs_attr3_leaf_freextent(trans, dp, + lp->valueblk, lp->valuelen); + + if (error == 0) + error = tmp; /* save only the 1st errno */ + } + + kmem_free(list); + return error; +} + +/* + * Recurse (gasp!) through the attribute nodes until we find leaves. + * We're doing a depth-first traversal in order to invalidate everything. + */ +STATIC int +xfs_attr3_node_inactive( + struct xfs_trans **trans, + struct xfs_inode *dp, + struct xfs_buf *bp, + int level) +{ + xfs_da_blkinfo_t *info; + xfs_da_intnode_t *node; + xfs_dablk_t child_fsb; + xfs_daddr_t parent_blkno, child_blkno; + int error, i; + struct xfs_buf *child_bp; + struct xfs_da_node_entry *btree; + struct xfs_da3_icnode_hdr ichdr; + + /* + * Since this code is recursive (gasp!) we must protect ourselves. + */ + if (level > XFS_DA_NODE_MAXDEPTH) { + xfs_trans_brelse(*trans, bp); /* no locks for later trans */ + return XFS_ERROR(EIO); + } + + node = bp->b_addr; + xfs_da3_node_hdr_from_disk(&ichdr, node); + parent_blkno = bp->b_bn; + if (!ichdr.count) { + xfs_trans_brelse(*trans, bp); + return 0; + } + btree = xfs_da3_node_tree_p(node); + child_fsb = be32_to_cpu(btree[0].before); + xfs_trans_brelse(*trans, bp); /* no locks for later trans */ + + /* + * If this is the node level just above the leaves, simply loop + * over the leaves removing all of them. If this is higher up + * in the tree, recurse downward. + */ + for (i = 0; i < ichdr.count; i++) { + /* + * Read the subsidiary block to see what we have to work with. + * Don't do this in a transaction. This is a depth-first + * traversal of the tree so we may deal with many blocks + * before we come back to this one. + */ + error = xfs_da3_node_read(*trans, dp, child_fsb, -2, &child_bp, + XFS_ATTR_FORK); + if (error) + return(error); + if (child_bp) { + /* save for re-read later */ + child_blkno = XFS_BUF_ADDR(child_bp); + + /* + * Invalidate the subtree, however we have to. + */ + info = child_bp->b_addr; + switch (info->magic) { + case cpu_to_be16(XFS_DA_NODE_MAGIC): + case cpu_to_be16(XFS_DA3_NODE_MAGIC): + error = xfs_attr3_node_inactive(trans, dp, + child_bp, level + 1); + break; + case cpu_to_be16(XFS_ATTR_LEAF_MAGIC): + case cpu_to_be16(XFS_ATTR3_LEAF_MAGIC): + error = xfs_attr3_leaf_inactive(trans, dp, + child_bp); + break; + default: + error = XFS_ERROR(EIO); + xfs_trans_brelse(*trans, child_bp); + break; + } + if (error) + return error; + + /* + * Remove the subsidiary block from the cache + * and from the log. + */ + error = xfs_da_get_buf(*trans, dp, 0, child_blkno, + &child_bp, XFS_ATTR_FORK); + if (error) + return error; + xfs_trans_binval(*trans, child_bp); + } + + /* + * If we're not done, re-read the parent to get the next + * child block number. + */ + if (i + 1 < ichdr.count) { + error = xfs_da3_node_read(*trans, dp, 0, parent_blkno, + &bp, XFS_ATTR_FORK); + if (error) + return error; + child_fsb = be32_to_cpu(btree[i + 1].before); + xfs_trans_brelse(*trans, bp); + } + /* + * Atomically commit the whole invalidate stuff. + */ + error = xfs_trans_roll(trans, dp); + if (error) + return error; + } + + return 0; +} + +/* + * Indiscriminately delete the entire attribute fork + * + * Recurse (gasp!) through the attribute nodes until we find leaves. + * We're doing a depth-first traversal in order to invalidate everything. + */ +int +xfs_attr3_root_inactive( + struct xfs_trans **trans, + struct xfs_inode *dp) +{ + struct xfs_da_blkinfo *info; + struct xfs_buf *bp; + xfs_daddr_t blkno; + int error; + + /* + * Read block 0 to see what we have to work with. + * We only get here if we have extents, since we remove + * the extents in reverse order the extent containing + * block 0 must still be there. + */ + error = xfs_da3_node_read(*trans, dp, 0, -1, &bp, XFS_ATTR_FORK); + if (error) + return error; + blkno = bp->b_bn; + + /* + * Invalidate the tree, even if the "tree" is only a single leaf block. + * This is a depth-first traversal! + */ + info = bp->b_addr; + switch (info->magic) { + case cpu_to_be16(XFS_DA_NODE_MAGIC): + case cpu_to_be16(XFS_DA3_NODE_MAGIC): + error = xfs_attr3_node_inactive(trans, dp, bp, 1); + break; + case cpu_to_be16(XFS_ATTR_LEAF_MAGIC): + case cpu_to_be16(XFS_ATTR3_LEAF_MAGIC): + error = xfs_attr3_leaf_inactive(trans, dp, bp); + break; + default: + error = XFS_ERROR(EIO); + xfs_trans_brelse(*trans, bp); + break; + } + if (error) + return error; + + /* + * Invalidate the incore copy of the root block. + */ + error = xfs_da_get_buf(*trans, dp, 0, blkno, &bp, XFS_ATTR_FORK); + if (error) + return error; + xfs_trans_binval(*trans, bp); /* remove from cache */ + /* + * Commit the invalidate and start the next transaction. + */ + error = xfs_trans_roll(trans, dp); + + return error; +} + +int +xfs_attr_inactive(xfs_inode_t *dp) +{ + xfs_trans_t *trans; + xfs_mount_t *mp; + int error; + + mp = dp->i_mount; + ASSERT(! XFS_NOT_DQATTACHED(mp, dp)); + + xfs_ilock(dp, XFS_ILOCK_SHARED); + if (!xfs_inode_hasattr(dp) || + dp->i_d.di_aformat == XFS_DINODE_FMT_LOCAL) { + xfs_iunlock(dp, XFS_ILOCK_SHARED); + return 0; + } + xfs_iunlock(dp, XFS_ILOCK_SHARED); + + /* + * Start our first transaction of the day. + * + * All future transactions during this code must be "chained" off + * this one via the trans_dup() call. All transactions will contain + * the inode, and the inode will always be marked with trans_ihold(). + * Since the inode will be locked in all transactions, we must log + * the inode in every transaction to let it float upward through + * the log. + */ + trans = xfs_trans_alloc(mp, XFS_TRANS_ATTRINVAL); + error = xfs_trans_reserve(trans, &M_RES(mp)->tr_attrinval, 0, 0); + if (error) { + xfs_trans_cancel(trans, 0); + return(error); + } + xfs_ilock(dp, XFS_ILOCK_EXCL); + + /* + * No need to make quota reservations here. We expect to release some + * blocks, not allocate, in the common case. + */ + xfs_trans_ijoin(trans, dp, 0); + + /* + * Decide on what work routines to call based on the inode size. + */ + if (!xfs_inode_hasattr(dp) || + dp->i_d.di_aformat == XFS_DINODE_FMT_LOCAL) { + error = 0; + goto out; + } + error = xfs_attr3_root_inactive(&trans, dp); + if (error) + goto out; + + error = xfs_itruncate_extents(&trans, dp, XFS_ATTR_FORK, 0); + if (error) + goto out; + + error = xfs_trans_commit(trans, XFS_TRANS_RELEASE_LOG_RES); + xfs_iunlock(dp, XFS_ILOCK_EXCL); + + return(error); + +out: + xfs_trans_cancel(trans, XFS_TRANS_RELEASE_LOG_RES|XFS_TRANS_ABORT); + xfs_iunlock(dp, XFS_ILOCK_EXCL); + return(error); +} diff --git a/fs/xfs/xfs_attr_leaf.c b/fs/xfs/xfs_attr_leaf.c index b800fbc..86db20a 100644 --- a/fs/xfs/xfs_attr_leaf.c +++ b/fs/xfs/xfs_attr_leaf.c @@ -22,6 +22,7 @@ #include "xfs_bit.h" #include "xfs_log.h" #include "xfs_trans.h" +#include "xfs_trans_priv.h" #include "xfs_sb.h" #include "xfs_ag.h" #include "xfs_mount.h" @@ -78,16 +79,6 @@ STATIC int xfs_attr3_leaf_figure_balance(xfs_da_state_t *state, int *number_usedbytes_in_blk1); /* - * Routines used for shrinking the Btree. - */ -STATIC int xfs_attr3_node_inactive(xfs_trans_t **trans, xfs_inode_t *dp, - struct xfs_buf *bp, int level); -STATIC int xfs_attr3_leaf_inactive(xfs_trans_t **trans, xfs_inode_t *dp, - struct xfs_buf *bp); -STATIC int xfs_attr3_leaf_freextent(xfs_trans_t **trans, xfs_inode_t *dp, - xfs_dablk_t blkno, int blkcnt); - -/* * Utility routines. */ STATIC void xfs_attr3_leaf_moveents(struct xfs_attr_leafblock *src_leaf, @@ -635,7 +626,7 @@ xfs_attr_shortform_getvalue(xfs_da_args_t *args) xfs_attr_sf_entry_t *sfe; int i; - ASSERT(args->dp->i_d.di_aformat == XFS_IFINLINE); + ASSERT(args->dp->i_afp->if_flags == XFS_IFINLINE); sf = (xfs_attr_shortform_t *)args->dp->i_afp->if_u1.if_data; sfe = &sf->list[0]; for (i = 0; i < sf->hdr.count; @@ -751,182 +742,6 @@ out: return(error); } -STATIC int -xfs_attr_shortform_compare(const void *a, const void *b) -{ - xfs_attr_sf_sort_t *sa, *sb; - - sa = (xfs_attr_sf_sort_t *)a; - sb = (xfs_attr_sf_sort_t *)b; - if (sa->hash < sb->hash) { - return(-1); - } else if (sa->hash > sb->hash) { - return(1); - } else { - return(sa->entno - sb->entno); - } -} - - -#define XFS_ISRESET_CURSOR(cursor) \ - (!((cursor)->initted) && !((cursor)->hashval) && \ - !((cursor)->blkno) && !((cursor)->offset)) -/* - * Copy out entries of shortform attribute lists for attr_list(). - * Shortform attribute lists are not stored in hashval sorted order. - * If the output buffer is not large enough to hold them all, then we - * we have to calculate each entries' hashvalue and sort them before - * we can begin returning them to the user. - */ -/*ARGSUSED*/ -int -xfs_attr_shortform_list(xfs_attr_list_context_t *context) -{ - attrlist_cursor_kern_t *cursor; - xfs_attr_sf_sort_t *sbuf, *sbp; - xfs_attr_shortform_t *sf; - xfs_attr_sf_entry_t *sfe; - xfs_inode_t *dp; - int sbsize, nsbuf, count, i; - int error; - - ASSERT(context != NULL); - dp = context->dp; - ASSERT(dp != NULL); - ASSERT(dp->i_afp != NULL); - sf = (xfs_attr_shortform_t *)dp->i_afp->if_u1.if_data; - ASSERT(sf != NULL); - if (!sf->hdr.count) - return(0); - cursor = context->cursor; - ASSERT(cursor != NULL); - - trace_xfs_attr_list_sf(context); - - /* - * If the buffer is large enough and the cursor is at the start, - * do not bother with sorting since we will return everything in - * one buffer and another call using the cursor won't need to be - * made. - * Note the generous fudge factor of 16 overhead bytes per entry. - * If bufsize is zero then put_listent must be a search function - * and can just scan through what we have. - */ - if (context->bufsize == 0 || - (XFS_ISRESET_CURSOR(cursor) && - (dp->i_afp->if_bytes + sf->hdr.count * 16) < context->bufsize)) { - for (i = 0, sfe = &sf->list[0]; i < sf->hdr.count; i++) { - error = context->put_listent(context, - sfe->flags, - sfe->nameval, - (int)sfe->namelen, - (int)sfe->valuelen, - &sfe->nameval[sfe->namelen]); - - /* - * Either search callback finished early or - * didn't fit it all in the buffer after all. - */ - if (context->seen_enough) - break; - - if (error) - return error; - sfe = XFS_ATTR_SF_NEXTENTRY(sfe); - } - trace_xfs_attr_list_sf_all(context); - return(0); - } - - /* do no more for a search callback */ - if (context->bufsize == 0) - return 0; - - /* - * It didn't all fit, so we have to sort everything on hashval. - */ - sbsize = sf->hdr.count * sizeof(*sbuf); - sbp = sbuf = kmem_alloc(sbsize, KM_SLEEP | KM_NOFS); - - /* - * Scan the attribute list for the rest of the entries, storing - * the relevant info from only those that match into a buffer. - */ - nsbuf = 0; - for (i = 0, sfe = &sf->list[0]; i < sf->hdr.count; i++) { - if (unlikely( - ((char *)sfe < (char *)sf) || - ((char *)sfe >= ((char *)sf + dp->i_afp->if_bytes)))) { - XFS_CORRUPTION_ERROR("xfs_attr_shortform_list", - XFS_ERRLEVEL_LOW, - context->dp->i_mount, sfe); - kmem_free(sbuf); - return XFS_ERROR(EFSCORRUPTED); - } - - sbp->entno = i; - sbp->hash = xfs_da_hashname(sfe->nameval, sfe->namelen); - sbp->name = sfe->nameval; - sbp->namelen = sfe->namelen; - /* These are bytes, and both on-disk, don't endian-flip */ - sbp->valuelen = sfe->valuelen; - sbp->flags = sfe->flags; - sfe = XFS_ATTR_SF_NEXTENTRY(sfe); - sbp++; - nsbuf++; - } - - /* - * Sort the entries on hash then entno. - */ - xfs_sort(sbuf, nsbuf, sizeof(*sbuf), xfs_attr_shortform_compare); - - /* - * Re-find our place IN THE SORTED LIST. - */ - count = 0; - cursor->initted = 1; - cursor->blkno = 0; - for (sbp = sbuf, i = 0; i < nsbuf; i++, sbp++) { - if (sbp->hash == cursor->hashval) { - if (cursor->offset == count) { - break; - } - count++; - } else if (sbp->hash > cursor->hashval) { - break; - } - } - if (i == nsbuf) { - kmem_free(sbuf); - return(0); - } - - /* - * Loop putting entries into the user buffer. - */ - for ( ; i < nsbuf; i++, sbp++) { - if (cursor->hashval != sbp->hash) { - cursor->hashval = sbp->hash; - cursor->offset = 0; - } - error = context->put_listent(context, - sbp->flags, - sbp->name, - sbp->namelen, - sbp->valuelen, - &sbp->name[sbp->namelen]); - if (error) - return error; - if (context->seen_enough) - break; - cursor->offset++; - } - - kmem_free(sbuf); - return(0); -} - /* * Check a leaf attribute block to see if all the entries would fit into * a shortform attribute list. @@ -1121,7 +936,6 @@ out: return error; } - /*======================================================================== * Routines used for growing the Btree. *========================================================================*/ @@ -1482,7 +1296,6 @@ xfs_attr3_leaf_compact( ichdr_dst->freemap[0].size = ichdr_dst->firstused - ichdr_dst->freemap[0].base; - /* write the header back to initialise the underlying buffer */ xfs_attr3_leaf_hdr_to_disk(leaf_dst, ichdr_dst); @@ -2643,130 +2456,6 @@ xfs_attr_leaf_newentsize(int namelen, int valuelen, int blocksize, int *local) return size; } -/* - * Copy out attribute list entries for attr_list(), for leaf attribute lists. - */ -int -xfs_attr3_leaf_list_int( - struct xfs_buf *bp, - struct xfs_attr_list_context *context) -{ - struct attrlist_cursor_kern *cursor; - struct xfs_attr_leafblock *leaf; - struct xfs_attr3_icleaf_hdr ichdr; - struct xfs_attr_leaf_entry *entries; - struct xfs_attr_leaf_entry *entry; - int retval; - int i; - - trace_xfs_attr_list_leaf(context); - - leaf = bp->b_addr; - xfs_attr3_leaf_hdr_from_disk(&ichdr, leaf); - entries = xfs_attr3_leaf_entryp(leaf); - - cursor = context->cursor; - cursor->initted = 1; - - /* - * Re-find our place in the leaf block if this is a new syscall. - */ - if (context->resynch) { - entry = &entries[0]; - for (i = 0; i < ichdr.count; entry++, i++) { - if (be32_to_cpu(entry->hashval) == cursor->hashval) { - if (cursor->offset == context->dupcnt) { - context->dupcnt = 0; - break; - } - context->dupcnt++; - } else if (be32_to_cpu(entry->hashval) > - cursor->hashval) { - context->dupcnt = 0; - break; - } - } - if (i == ichdr.count) { - trace_xfs_attr_list_notfound(context); - return 0; - } - } else { - entry = &entries[0]; - i = 0; - } - context->resynch = 0; - - /* - * We have found our place, start copying out the new attributes. - */ - retval = 0; - for (; i < ichdr.count; entry++, i++) { - if (be32_to_cpu(entry->hashval) != cursor->hashval) { - cursor->hashval = be32_to_cpu(entry->hashval); - cursor->offset = 0; - } - - if (entry->flags & XFS_ATTR_INCOMPLETE) - continue; /* skip incomplete entries */ - - if (entry->flags & XFS_ATTR_LOCAL) { - xfs_attr_leaf_name_local_t *name_loc = - xfs_attr3_leaf_name_local(leaf, i); - - retval = context->put_listent(context, - entry->flags, - name_loc->nameval, - (int)name_loc->namelen, - be16_to_cpu(name_loc->valuelen), - &name_loc->nameval[name_loc->namelen]); - if (retval) - return retval; - } else { - xfs_attr_leaf_name_remote_t *name_rmt = - xfs_attr3_leaf_name_remote(leaf, i); - - int valuelen = be32_to_cpu(name_rmt->valuelen); - - if (context->put_value) { - xfs_da_args_t args; - - memset((char *)&args, 0, sizeof(args)); - args.dp = context->dp; - args.whichfork = XFS_ATTR_FORK; - args.valuelen = valuelen; - args.value = kmem_alloc(valuelen, KM_SLEEP | KM_NOFS); - args.rmtblkno = be32_to_cpu(name_rmt->valueblk); - args.rmtblkcnt = xfs_attr3_rmt_blocks( - args.dp->i_mount, valuelen); - retval = xfs_attr_rmtval_get(&args); - if (retval) - return retval; - retval = context->put_listent(context, - entry->flags, - name_rmt->name, - (int)name_rmt->namelen, - valuelen, - args.value); - kmem_free(args.value); - } else { - retval = context->put_listent(context, - entry->flags, - name_rmt->name, - (int)name_rmt->namelen, - valuelen, - NULL); - } - if (retval) - return retval; - } - if (context->seen_enough) - break; - cursor->offset++; - } - trace_xfs_attr_list_leaf_end(context); - return retval; -} - /*======================================================================== * Manage the INCOMPLETE flag in a leaf entry @@ -3011,345 +2700,3 @@ xfs_attr3_leaf_flipflags( return error; } - -/*======================================================================== - * Indiscriminately delete the entire attribute fork - *========================================================================*/ - -/* - * Recurse (gasp!) through the attribute nodes until we find leaves. - * We're doing a depth-first traversal in order to invalidate everything. - */ -int -xfs_attr3_root_inactive( - struct xfs_trans **trans, - struct xfs_inode *dp) -{ - struct xfs_da_blkinfo *info; - struct xfs_buf *bp; - xfs_daddr_t blkno; - int error; - - /* - * Read block 0 to see what we have to work with. - * We only get here if we have extents, since we remove - * the extents in reverse order the extent containing - * block 0 must still be there. - */ - error = xfs_da3_node_read(*trans, dp, 0, -1, &bp, XFS_ATTR_FORK); - if (error) - return error; - blkno = bp->b_bn; - - /* - * Invalidate the tree, even if the "tree" is only a single leaf block. - * This is a depth-first traversal! - */ - info = bp->b_addr; - switch (info->magic) { - case cpu_to_be16(XFS_DA_NODE_MAGIC): - case cpu_to_be16(XFS_DA3_NODE_MAGIC): - error = xfs_attr3_node_inactive(trans, dp, bp, 1); - break; - case cpu_to_be16(XFS_ATTR_LEAF_MAGIC): - case cpu_to_be16(XFS_ATTR3_LEAF_MAGIC): - error = xfs_attr3_leaf_inactive(trans, dp, bp); - break; - default: - error = XFS_ERROR(EIO); - xfs_trans_brelse(*trans, bp); - break; - } - if (error) - return error; - - /* - * Invalidate the incore copy of the root block. - */ - error = xfs_da_get_buf(*trans, dp, 0, blkno, &bp, XFS_ATTR_FORK); - if (error) - return error; - xfs_trans_binval(*trans, bp); /* remove from cache */ - /* - * Commit the invalidate and start the next transaction. - */ - error = xfs_trans_roll(trans, dp); - - return error; -} - -/* - * Recurse (gasp!) through the attribute nodes until we find leaves. - * We're doing a depth-first traversal in order to invalidate everything. - */ -STATIC int -xfs_attr3_node_inactive( - struct xfs_trans **trans, - struct xfs_inode *dp, - struct xfs_buf *bp, - int level) -{ - xfs_da_blkinfo_t *info; - xfs_da_intnode_t *node; - xfs_dablk_t child_fsb; - xfs_daddr_t parent_blkno, child_blkno; - int error, i; - struct xfs_buf *child_bp; - struct xfs_da_node_entry *btree; - struct xfs_da3_icnode_hdr ichdr; - - /* - * Since this code is recursive (gasp!) we must protect ourselves. - */ - if (level > XFS_DA_NODE_MAXDEPTH) { - xfs_trans_brelse(*trans, bp); /* no locks for later trans */ - return XFS_ERROR(EIO); - } - - node = bp->b_addr; - xfs_da3_node_hdr_from_disk(&ichdr, node); - parent_blkno = bp->b_bn; - if (!ichdr.count) { - xfs_trans_brelse(*trans, bp); - return 0; - } - btree = xfs_da3_node_tree_p(node); - child_fsb = be32_to_cpu(btree[0].before); - xfs_trans_brelse(*trans, bp); /* no locks for later trans */ - - /* - * If this is the node level just above the leaves, simply loop - * over the leaves removing all of them. If this is higher up - * in the tree, recurse downward. - */ - for (i = 0; i < ichdr.count; i++) { - /* - * Read the subsidiary block to see what we have to work with. - * Don't do this in a transaction. This is a depth-first - * traversal of the tree so we may deal with many blocks - * before we come back to this one. - */ - error = xfs_da3_node_read(*trans, dp, child_fsb, -2, &child_bp, - XFS_ATTR_FORK); - if (error) - return(error); - if (child_bp) { - /* save for re-read later */ - child_blkno = XFS_BUF_ADDR(child_bp); - - /* - * Invalidate the subtree, however we have to. - */ - info = child_bp->b_addr; - switch (info->magic) { - case cpu_to_be16(XFS_DA_NODE_MAGIC): - case cpu_to_be16(XFS_DA3_NODE_MAGIC): - error = xfs_attr3_node_inactive(trans, dp, - child_bp, level + 1); - break; - case cpu_to_be16(XFS_ATTR_LEAF_MAGIC): - case cpu_to_be16(XFS_ATTR3_LEAF_MAGIC): - error = xfs_attr3_leaf_inactive(trans, dp, - child_bp); - break; - default: - error = XFS_ERROR(EIO); - xfs_trans_brelse(*trans, child_bp); - break; - } - if (error) - return error; - - /* - * Remove the subsidiary block from the cache - * and from the log. - */ - error = xfs_da_get_buf(*trans, dp, 0, child_blkno, - &child_bp, XFS_ATTR_FORK); - if (error) - return error; - xfs_trans_binval(*trans, child_bp); - } - - /* - * If we're not done, re-read the parent to get the next - * child block number. - */ - if (i + 1 < ichdr.count) { - error = xfs_da3_node_read(*trans, dp, 0, parent_blkno, - &bp, XFS_ATTR_FORK); - if (error) - return error; - child_fsb = be32_to_cpu(btree[i + 1].before); - xfs_trans_brelse(*trans, bp); - } - /* - * Atomically commit the whole invalidate stuff. - */ - error = xfs_trans_roll(trans, dp); - if (error) - return error; - } - - return 0; -} - -/* - * Invalidate all of the "remote" value regions pointed to by a particular - * leaf block. - * Note that we must release the lock on the buffer so that we are not - * caught holding something that the logging code wants to flush to disk. - */ -STATIC int -xfs_attr3_leaf_inactive( - struct xfs_trans **trans, - struct xfs_inode *dp, - struct xfs_buf *bp) -{ - struct xfs_attr_leafblock *leaf; - struct xfs_attr3_icleaf_hdr ichdr; - struct xfs_attr_leaf_entry *entry; - struct xfs_attr_leaf_name_remote *name_rmt; - struct xfs_attr_inactive_list *list; - struct xfs_attr_inactive_list *lp; - int error; - int count; - int size; - int tmp; - int i; - - leaf = bp->b_addr; - xfs_attr3_leaf_hdr_from_disk(&ichdr, leaf); - - /* - * Count the number of "remote" value extents. - */ - count = 0; - entry = xfs_attr3_leaf_entryp(leaf); - for (i = 0; i < ichdr.count; entry++, i++) { - if (be16_to_cpu(entry->nameidx) && - ((entry->flags & XFS_ATTR_LOCAL) == 0)) { - name_rmt = xfs_attr3_leaf_name_remote(leaf, i); - if (name_rmt->valueblk) - count++; - } - } - - /* - * If there are no "remote" values, we're done. - */ - if (count == 0) { - xfs_trans_brelse(*trans, bp); - return 0; - } - - /* - * Allocate storage for a list of all the "remote" value extents. - */ - size = count * sizeof(xfs_attr_inactive_list_t); - list = kmem_alloc(size, KM_SLEEP); - - /* - * Identify each of the "remote" value extents. - */ - lp = list; - entry = xfs_attr3_leaf_entryp(leaf); - for (i = 0; i < ichdr.count; entry++, i++) { - if (be16_to_cpu(entry->nameidx) && - ((entry->flags & XFS_ATTR_LOCAL) == 0)) { - name_rmt = xfs_attr3_leaf_name_remote(leaf, i); - if (name_rmt->valueblk) { - lp->valueblk = be32_to_cpu(name_rmt->valueblk); - lp->valuelen = xfs_attr3_rmt_blocks(dp->i_mount, - be32_to_cpu(name_rmt->valuelen)); - lp++; - } - } - } - xfs_trans_brelse(*trans, bp); /* unlock for trans. in freextent() */ - - /* - * Invalidate each of the "remote" value extents. - */ - error = 0; - for (lp = list, i = 0; i < count; i++, lp++) { - tmp = xfs_attr3_leaf_freextent(trans, dp, - lp->valueblk, lp->valuelen); - - if (error == 0) - error = tmp; /* save only the 1st errno */ - } - - kmem_free(list); - return error; -} - -/* - * Look at all the extents for this logical region, - * invalidate any buffers that are incore/in transactions. - */ -STATIC int -xfs_attr3_leaf_freextent( - struct xfs_trans **trans, - struct xfs_inode *dp, - xfs_dablk_t blkno, - int blkcnt) -{ - struct xfs_bmbt_irec map; - struct xfs_buf *bp; - xfs_dablk_t tblkno; - xfs_daddr_t dblkno; - int tblkcnt; - int dblkcnt; - int nmap; - int error; - - /* - * Roll through the "value", invalidating the attribute value's - * blocks. - */ - tblkno = blkno; - tblkcnt = blkcnt; - while (tblkcnt > 0) { - /* - * Try to remember where we decided to put the value. - */ - nmap = 1; - error = xfs_bmapi_read(dp, (xfs_fileoff_t)tblkno, tblkcnt, - &map, &nmap, XFS_BMAPI_ATTRFORK); - if (error) { - return(error); - } - ASSERT(nmap == 1); - ASSERT(map.br_startblock != DELAYSTARTBLOCK); - - /* - * If it's a hole, these are already unmapped - * so there's nothing to invalidate. - */ - if (map.br_startblock != HOLESTARTBLOCK) { - - dblkno = XFS_FSB_TO_DADDR(dp->i_mount, - map.br_startblock); - dblkcnt = XFS_FSB_TO_BB(dp->i_mount, - map.br_blockcount); - bp = xfs_trans_get_buf(*trans, - dp->i_mount->m_ddev_targp, - dblkno, dblkcnt, 0); - if (!bp) - return ENOMEM; - xfs_trans_binval(*trans, bp); - /* - * Roll to next transaction. - */ - error = xfs_trans_roll(trans, dp); - if (error) - return (error); - } - - tblkno += map.br_blockcount; - tblkcnt -= map.br_blockcount; - } - - return(0); -} diff --git a/fs/xfs/xfs_attr_leaf.h b/fs/xfs/xfs_attr_leaf.h index 444a770..c102213 100644 --- a/fs/xfs/xfs_attr_leaf.h +++ b/fs/xfs/xfs_attr_leaf.h @@ -333,6 +333,8 @@ int xfs_attr3_leaf_read(struct xfs_trans *tp, struct xfs_inode *dp, struct xfs_buf **bpp); void xfs_attr3_leaf_hdr_from_disk(struct xfs_attr3_icleaf_hdr *to, struct xfs_attr_leafblock *from); +void xfs_attr3_leaf_hdr_to_disk(struct xfs_attr_leafblock *to, + struct xfs_attr3_icleaf_hdr *from); extern const struct xfs_buf_ops xfs_attr3_leaf_buf_ops; diff --git a/fs/xfs/xfs_attr_list.c b/fs/xfs/xfs_attr_list.c new file mode 100644 index 0000000..cbc80d4 --- /dev/null +++ b/fs/xfs/xfs_attr_list.c @@ -0,0 +1,655 @@ +/* + * Copyright (c) 2000-2005 Silicon Graphics, Inc. + * Copyright (c) 2013 Red Hat, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include "xfs.h" +#include "xfs_fs.h" +#include "xfs_types.h" +#include "xfs_bit.h" +#include "xfs_log.h" +#include "xfs_trans.h" +#include "xfs_sb.h" +#include "xfs_ag.h" +#include "xfs_mount.h" +#include "xfs_da_btree.h" +#include "xfs_bmap_btree.h" +#include "xfs_alloc_btree.h" +#include "xfs_ialloc_btree.h" +#include "xfs_alloc.h" +#include "xfs_btree.h" +#include "xfs_attr_sf.h" +#include "xfs_attr_remote.h" +#include "xfs_dinode.h" +#include "xfs_inode.h" +#include "xfs_inode_item.h" +#include "xfs_bmap.h" +#include "xfs_attr.h" +#include "xfs_attr_leaf.h" +#include "xfs_error.h" +#include "xfs_trace.h" +#include "xfs_buf_item.h" +#include "xfs_cksum.h" + +STATIC int +xfs_attr_shortform_compare(const void *a, const void *b) +{ + xfs_attr_sf_sort_t *sa, *sb; + + sa = (xfs_attr_sf_sort_t *)a; + sb = (xfs_attr_sf_sort_t *)b; + if (sa->hash < sb->hash) { + return(-1); + } else if (sa->hash > sb->hash) { + return(1); + } else { + return(sa->entno - sb->entno); + } +} + +#define XFS_ISRESET_CURSOR(cursor) \ + (!((cursor)->initted) && !((cursor)->hashval) && \ + !((cursor)->blkno) && !((cursor)->offset)) +/* + * Copy out entries of shortform attribute lists for attr_list(). + * Shortform attribute lists are not stored in hashval sorted order. + * If the output buffer is not large enough to hold them all, then we + * we have to calculate each entries' hashvalue and sort them before + * we can begin returning them to the user. + */ +int +xfs_attr_shortform_list(xfs_attr_list_context_t *context) +{ + attrlist_cursor_kern_t *cursor; + xfs_attr_sf_sort_t *sbuf, *sbp; + xfs_attr_shortform_t *sf; + xfs_attr_sf_entry_t *sfe; + xfs_inode_t *dp; + int sbsize, nsbuf, count, i; + int error; + + ASSERT(context != NULL); + dp = context->dp; + ASSERT(dp != NULL); + ASSERT(dp->i_afp != NULL); + sf = (xfs_attr_shortform_t *)dp->i_afp->if_u1.if_data; + ASSERT(sf != NULL); + if (!sf->hdr.count) + return(0); + cursor = context->cursor; + ASSERT(cursor != NULL); + + trace_xfs_attr_list_sf(context); + + /* + * If the buffer is large enough and the cursor is at the start, + * do not bother with sorting since we will return everything in + * one buffer and another call using the cursor won't need to be + * made. + * Note the generous fudge factor of 16 overhead bytes per entry. + * If bufsize is zero then put_listent must be a search function + * and can just scan through what we have. + */ + if (context->bufsize == 0 || + (XFS_ISRESET_CURSOR(cursor) && + (dp->i_afp->if_bytes + sf->hdr.count * 16) < context->bufsize)) { + for (i = 0, sfe = &sf->list[0]; i < sf->hdr.count; i++) { + error = context->put_listent(context, + sfe->flags, + sfe->nameval, + (int)sfe->namelen, + (int)sfe->valuelen, + &sfe->nameval[sfe->namelen]); + + /* + * Either search callback finished early or + * didn't fit it all in the buffer after all. + */ + if (context->seen_enough) + break; + + if (error) + return error; + sfe = XFS_ATTR_SF_NEXTENTRY(sfe); + } + trace_xfs_attr_list_sf_all(context); + return(0); + } + + /* do no more for a search callback */ + if (context->bufsize == 0) + return 0; + + /* + * It didn't all fit, so we have to sort everything on hashval. + */ + sbsize = sf->hdr.count * sizeof(*sbuf); + sbp = sbuf = kmem_alloc(sbsize, KM_SLEEP | KM_NOFS); + + /* + * Scan the attribute list for the rest of the entries, storing + * the relevant info from only those that match into a buffer. + */ + nsbuf = 0; + for (i = 0, sfe = &sf->list[0]; i < sf->hdr.count; i++) { + if (unlikely( + ((char *)sfe < (char *)sf) || + ((char *)sfe >= ((char *)sf + dp->i_afp->if_bytes)))) { + XFS_CORRUPTION_ERROR("xfs_attr_shortform_list", + XFS_ERRLEVEL_LOW, + context->dp->i_mount, sfe); + kmem_free(sbuf); + return XFS_ERROR(EFSCORRUPTED); + } + + sbp->entno = i; + sbp->hash = xfs_da_hashname(sfe->nameval, sfe->namelen); + sbp->name = sfe->nameval; + sbp->namelen = sfe->namelen; + /* These are bytes, and both on-disk, don't endian-flip */ + sbp->valuelen = sfe->valuelen; + sbp->flags = sfe->flags; + sfe = XFS_ATTR_SF_NEXTENTRY(sfe); + sbp++; + nsbuf++; + } + + /* + * Sort the entries on hash then entno. + */ + xfs_sort(sbuf, nsbuf, sizeof(*sbuf), xfs_attr_shortform_compare); + + /* + * Re-find our place IN THE SORTED LIST. + */ + count = 0; + cursor->initted = 1; + cursor->blkno = 0; + for (sbp = sbuf, i = 0; i < nsbuf; i++, sbp++) { + if (sbp->hash == cursor->hashval) { + if (cursor->offset == count) { + break; + } + count++; + } else if (sbp->hash > cursor->hashval) { + break; + } + } + if (i == nsbuf) { + kmem_free(sbuf); + return(0); + } + + /* + * Loop putting entries into the user buffer. + */ + for ( ; i < nsbuf; i++, sbp++) { + if (cursor->hashval != sbp->hash) { + cursor->hashval = sbp->hash; + cursor->offset = 0; + } + error = context->put_listent(context, + sbp->flags, + sbp->name, + sbp->namelen, + sbp->valuelen, + &sbp->name[sbp->namelen]); + if (error) + return error; + if (context->seen_enough) + break; + cursor->offset++; + } + + kmem_free(sbuf); + return(0); +} + +STATIC int +xfs_attr_node_list(xfs_attr_list_context_t *context) +{ + attrlist_cursor_kern_t *cursor; + xfs_attr_leafblock_t *leaf; + xfs_da_intnode_t *node; + struct xfs_attr3_icleaf_hdr leafhdr; + struct xfs_da3_icnode_hdr nodehdr; + struct xfs_da_node_entry *btree; + int error, i; + struct xfs_buf *bp; + + trace_xfs_attr_node_list(context); + + cursor = context->cursor; + cursor->initted = 1; + + /* + * Do all sorts of validation on the passed-in cursor structure. + * If anything is amiss, ignore the cursor and look up the hashval + * starting from the btree root. + */ + bp = NULL; + if (cursor->blkno > 0) { + error = xfs_da3_node_read(NULL, context->dp, cursor->blkno, -1, + &bp, XFS_ATTR_FORK); + if ((error != 0) && (error != EFSCORRUPTED)) + return(error); + if (bp) { + struct xfs_attr_leaf_entry *entries; + + node = bp->b_addr; + switch (be16_to_cpu(node->hdr.info.magic)) { + case XFS_DA_NODE_MAGIC: + case XFS_DA3_NODE_MAGIC: + trace_xfs_attr_list_wrong_blk(context); + xfs_trans_brelse(NULL, bp); + bp = NULL; + break; + case XFS_ATTR_LEAF_MAGIC: + case XFS_ATTR3_LEAF_MAGIC: + leaf = bp->b_addr; + xfs_attr3_leaf_hdr_from_disk(&leafhdr, leaf); + entries = xfs_attr3_leaf_entryp(leaf); + if (cursor->hashval > be32_to_cpu( + entries[leafhdr.count - 1].hashval)) { + trace_xfs_attr_list_wrong_blk(context); + xfs_trans_brelse(NULL, bp); + bp = NULL; + } else if (cursor->hashval <= be32_to_cpu( + entries[0].hashval)) { + trace_xfs_attr_list_wrong_blk(context); + xfs_trans_brelse(NULL, bp); + bp = NULL; + } + break; + default: + trace_xfs_attr_list_wrong_blk(context); + xfs_trans_brelse(NULL, bp); + bp = NULL; + } + } + } + + /* + * We did not find what we expected given the cursor's contents, + * so we start from the top and work down based on the hash value. + * Note that start of node block is same as start of leaf block. + */ + if (bp == NULL) { + cursor->blkno = 0; + for (;;) { + __uint16_t magic; + + error = xfs_da3_node_read(NULL, context->dp, + cursor->blkno, -1, &bp, + XFS_ATTR_FORK); + if (error) + return(error); + node = bp->b_addr; + magic = be16_to_cpu(node->hdr.info.magic); + if (magic == XFS_ATTR_LEAF_MAGIC || + magic == XFS_ATTR3_LEAF_MAGIC) + break; + if (magic != XFS_DA_NODE_MAGIC && + magic != XFS_DA3_NODE_MAGIC) { + XFS_CORRUPTION_ERROR("xfs_attr_node_list(3)", + XFS_ERRLEVEL_LOW, + context->dp->i_mount, + node); + xfs_trans_brelse(NULL, bp); + return XFS_ERROR(EFSCORRUPTED); + } + + xfs_da3_node_hdr_from_disk(&nodehdr, node); + btree = xfs_da3_node_tree_p(node); + for (i = 0; i < nodehdr.count; btree++, i++) { + if (cursor->hashval + <= be32_to_cpu(btree->hashval)) { + cursor->blkno = be32_to_cpu(btree->before); + trace_xfs_attr_list_node_descend(context, + btree); + break; + } + } + if (i == nodehdr.count) { + xfs_trans_brelse(NULL, bp); + return 0; + } + xfs_trans_brelse(NULL, bp); + } + } + ASSERT(bp != NULL); + + /* + * Roll upward through the blocks, processing each leaf block in + * order. As long as there is space in the result buffer, keep + * adding the information. + */ + for (;;) { + leaf = bp->b_addr; + error = xfs_attr3_leaf_list_int(bp, context); + if (error) { + xfs_trans_brelse(NULL, bp); + return error; + } + xfs_attr3_leaf_hdr_from_disk(&leafhdr, leaf); + if (context->seen_enough || leafhdr.forw == 0) + break; + cursor->blkno = leafhdr.forw; + xfs_trans_brelse(NULL, bp); + error = xfs_attr3_leaf_read(NULL, context->dp, cursor->blkno, -1, + &bp); + if (error) + return error; + } + xfs_trans_brelse(NULL, bp); + return 0; +} + +/* + * Copy out attribute list entries for attr_list(), for leaf attribute lists. + */ +int +xfs_attr3_leaf_list_int( + struct xfs_buf *bp, + struct xfs_attr_list_context *context) +{ + struct attrlist_cursor_kern *cursor; + struct xfs_attr_leafblock *leaf; + struct xfs_attr3_icleaf_hdr ichdr; + struct xfs_attr_leaf_entry *entries; + struct xfs_attr_leaf_entry *entry; + int retval; + int i; + + trace_xfs_attr_list_leaf(context); + + leaf = bp->b_addr; + xfs_attr3_leaf_hdr_from_disk(&ichdr, leaf); + entries = xfs_attr3_leaf_entryp(leaf); + + cursor = context->cursor; + cursor->initted = 1; + + /* + * Re-find our place in the leaf block if this is a new syscall. + */ + if (context->resynch) { + entry = &entries[0]; + for (i = 0; i < ichdr.count; entry++, i++) { + if (be32_to_cpu(entry->hashval) == cursor->hashval) { + if (cursor->offset == context->dupcnt) { + context->dupcnt = 0; + break; + } + context->dupcnt++; + } else if (be32_to_cpu(entry->hashval) > + cursor->hashval) { + context->dupcnt = 0; + break; + } + } + if (i == ichdr.count) { + trace_xfs_attr_list_notfound(context); + return 0; + } + } else { + entry = &entries[0]; + i = 0; + } + context->resynch = 0; + + /* + * We have found our place, start copying out the new attributes. + */ + retval = 0; + for (; i < ichdr.count; entry++, i++) { + if (be32_to_cpu(entry->hashval) != cursor->hashval) { + cursor->hashval = be32_to_cpu(entry->hashval); + cursor->offset = 0; + } + + if (entry->flags & XFS_ATTR_INCOMPLETE) + continue; /* skip incomplete entries */ + + if (entry->flags & XFS_ATTR_LOCAL) { + xfs_attr_leaf_name_local_t *name_loc = + xfs_attr3_leaf_name_local(leaf, i); + + retval = context->put_listent(context, + entry->flags, + name_loc->nameval, + (int)name_loc->namelen, + be16_to_cpu(name_loc->valuelen), + &name_loc->nameval[name_loc->namelen]); + if (retval) + return retval; + } else { + xfs_attr_leaf_name_remote_t *name_rmt = + xfs_attr3_leaf_name_remote(leaf, i); + + int valuelen = be32_to_cpu(name_rmt->valuelen); + + if (context->put_value) { + xfs_da_args_t args; + + memset((char *)&args, 0, sizeof(args)); + args.dp = context->dp; + args.whichfork = XFS_ATTR_FORK; + args.valuelen = valuelen; + args.value = kmem_alloc(valuelen, KM_SLEEP | KM_NOFS); + args.rmtblkno = be32_to_cpu(name_rmt->valueblk); + args.rmtblkcnt = xfs_attr3_rmt_blocks( + args.dp->i_mount, valuelen); + retval = xfs_attr_rmtval_get(&args); + if (retval) + return retval; + retval = context->put_listent(context, + entry->flags, + name_rmt->name, + (int)name_rmt->namelen, + valuelen, + args.value); + kmem_free(args.value); + } else { + retval = context->put_listent(context, + entry->flags, + name_rmt->name, + (int)name_rmt->namelen, + valuelen, + NULL); + } + if (retval) + return retval; + } + if (context->seen_enough) + break; + cursor->offset++; + } + trace_xfs_attr_list_leaf_end(context); + return retval; +} + +/* + * Copy out attribute entries for attr_list(), for leaf attribute lists. + */ +STATIC int +xfs_attr_leaf_list(xfs_attr_list_context_t *context) +{ + int error; + struct xfs_buf *bp; + + trace_xfs_attr_leaf_list(context); + + context->cursor->blkno = 0; + error = xfs_attr3_leaf_read(NULL, context->dp, 0, -1, &bp); + if (error) + return XFS_ERROR(error); + + error = xfs_attr3_leaf_list_int(bp, context); + xfs_trans_brelse(NULL, bp); + return XFS_ERROR(error); +} + +int +xfs_attr_list_int( + xfs_attr_list_context_t *context) +{ + int error; + xfs_inode_t *dp = context->dp; + + XFS_STATS_INC(xs_attr_list); + + if (XFS_FORCED_SHUTDOWN(dp->i_mount)) + return EIO; + + xfs_ilock(dp, XFS_ILOCK_SHARED); + + /* + * Decide on what work routines to call based on the inode size. + */ + if (!xfs_inode_hasattr(dp)) { + error = 0; + } else if (dp->i_d.di_aformat == XFS_DINODE_FMT_LOCAL) { + error = xfs_attr_shortform_list(context); + } else if (xfs_bmap_one_block(dp, XFS_ATTR_FORK)) { + error = xfs_attr_leaf_list(context); + } else { + error = xfs_attr_node_list(context); + } + + xfs_iunlock(dp, XFS_ILOCK_SHARED); + + return error; +} + +#define ATTR_ENTBASESIZE /* minimum bytes used by an attr */ \ + (((struct attrlist_ent *) 0)->a_name - (char *) 0) +#define ATTR_ENTSIZE(namelen) /* actual bytes used by an attr */ \ + ((ATTR_ENTBASESIZE + (namelen) + 1 + sizeof(u_int32_t)-1) \ + & ~(sizeof(u_int32_t)-1)) + +/* + * Format an attribute and copy it out to the user's buffer. + * Take care to check values and protect against them changing later, + * we may be reading them directly out of a user buffer. + */ +STATIC int +xfs_attr_put_listent( + xfs_attr_list_context_t *context, + int flags, + unsigned char *name, + int namelen, + int valuelen, + unsigned char *value) +{ + struct attrlist *alist = (struct attrlist *)context->alist; + attrlist_ent_t *aep; + int arraytop; + + ASSERT(!(context->flags & ATTR_KERNOVAL)); + ASSERT(context->count >= 0); + ASSERT(context->count < (ATTR_MAX_VALUELEN/8)); + ASSERT(context->firstu >= sizeof(*alist)); + ASSERT(context->firstu <= context->bufsize); + + /* + * Only list entries in the right namespace. + */ + if (((context->flags & ATTR_SECURE) == 0) != + ((flags & XFS_ATTR_SECURE) == 0)) + return 0; + if (((context->flags & ATTR_ROOT) == 0) != + ((flags & XFS_ATTR_ROOT) == 0)) + return 0; + + arraytop = sizeof(*alist) + + context->count * sizeof(alist->al_offset[0]); + context->firstu -= ATTR_ENTSIZE(namelen); + if (context->firstu < arraytop) { + trace_xfs_attr_list_full(context); + alist->al_more = 1; + context->seen_enough = 1; + return 1; + } + + aep = (attrlist_ent_t *)&context->alist[context->firstu]; + aep->a_valuelen = valuelen; + memcpy(aep->a_name, name, namelen); + aep->a_name[namelen] = 0; + alist->al_offset[context->count++] = context->firstu; + alist->al_count = context->count; + trace_xfs_attr_list_add(context); + return 0; +} + +/* + * Generate a list of extended attribute names and optionally + * also value lengths. Positive return value follows the XFS + * convention of being an error, zero or negative return code + * is the length of the buffer returned (negated), indicating + * success. + */ +int +xfs_attr_list( + xfs_inode_t *dp, + char *buffer, + int bufsize, + int flags, + attrlist_cursor_kern_t *cursor) +{ + xfs_attr_list_context_t context; + struct attrlist *alist; + int error; + + /* + * Validate the cursor. + */ + if (cursor->pad1 || cursor->pad2) + return(XFS_ERROR(EINVAL)); + if ((cursor->initted == 0) && + (cursor->hashval || cursor->blkno || cursor->offset)) + return XFS_ERROR(EINVAL); + + /* + * Check for a properly aligned buffer. + */ + if (((long)buffer) & (sizeof(int)-1)) + return XFS_ERROR(EFAULT); + if (flags & ATTR_KERNOVAL) + bufsize = 0; + + /* + * Initialize the output buffer. + */ + memset(&context, 0, sizeof(context)); + context.dp = dp; + context.cursor = cursor; + context.resynch = 1; + context.flags = flags; + context.alist = buffer; + context.bufsize = (bufsize & ~(sizeof(int)-1)); /* align */ + context.firstu = context.bufsize; + context.put_listent = xfs_attr_put_listent; + + alist = (struct attrlist *)context.alist; + alist->al_count = 0; + alist->al_more = 0; + alist->al_offset[0] = context.bufsize; + + error = xfs_attr_list_int(&context); + ASSERT(error >= 0); + return error; +} diff --git a/fs/xfs/xfs_attr_remote.c b/fs/xfs/xfs_attr_remote.c index ef6b0c1..712a502 100644 --- a/fs/xfs/xfs_attr_remote.c +++ b/fs/xfs/xfs_attr_remote.c @@ -22,6 +22,7 @@ #include "xfs_bit.h" #include "xfs_log.h" #include "xfs_trans.h" +#include "xfs_trans_priv.h" #include "xfs_sb.h" #include "xfs_ag.h" #include "xfs_mount.h" @@ -33,6 +34,7 @@ #include "xfs_alloc.h" #include "xfs_inode_item.h" #include "xfs_bmap.h" +#include "xfs_bmap_util.h" #include "xfs_attr.h" #include "xfs_attr_leaf.h" #include "xfs_attr_remote.h" @@ -237,7 +239,7 @@ xfs_attr_rmtval_copyout( xfs_ino_t ino, int *offset, int *valuelen, - char **dst) + __uint8_t **dst) { char *src = bp->b_addr; xfs_daddr_t bno = bp->b_bn; @@ -249,7 +251,7 @@ xfs_attr_rmtval_copyout( int hdr_size = 0; int byte_cnt = XFS_ATTR3_RMT_BUF_SPACE(mp, XFS_LBSIZE(mp)); - byte_cnt = min_t(int, *valuelen, byte_cnt); + byte_cnt = min(*valuelen, byte_cnt); if (xfs_sb_version_hascrc(&mp->m_sb)) { if (!xfs_attr3_rmt_hdr_ok(mp, src, ino, *offset, @@ -284,7 +286,7 @@ xfs_attr_rmtval_copyin( xfs_ino_t ino, int *offset, int *valuelen, - char **src) + __uint8_t **src) { char *dst = bp->b_addr; xfs_daddr_t bno = bp->b_bn; @@ -337,7 +339,7 @@ xfs_attr_rmtval_get( struct xfs_mount *mp = args->dp->i_mount; struct xfs_buf *bp; xfs_dablk_t lblkno = args->rmtblkno; - char *dst = args->value; + __uint8_t *dst = args->value; int valuelen = args->valuelen; int nmap; int error; @@ -401,7 +403,7 @@ xfs_attr_rmtval_set( struct xfs_bmbt_irec map; xfs_dablk_t lblkno; xfs_fileoff_t lfileoff = 0; - char *src = args->value; + __uint8_t *src = args->value; int blkcnt; int valuelen; int nmap; @@ -543,11 +545,6 @@ xfs_attr_rmtval_remove( /* * Roll through the "value", invalidating the attribute value's blocks. - * Note that args->rmtblkcnt is the minimum number of data blocks we'll - * see for a CRC enabled remote attribute. Each extent will have a - * header, and so we may have more blocks than we realise here. If we - * fail to map the blocks correctly, we'll have problems with the buffer - * lookups. */ lblkno = args->rmtblkno; blkcnt = args->rmtblkcnt; @@ -628,4 +625,3 @@ xfs_attr_rmtval_remove( } return(0); } - diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c index 05c698c..92b8309 100644 --- a/fs/xfs/xfs_bmap.c +++ b/fs/xfs/xfs_bmap.c @@ -17,16 +17,17 @@ */ #include "xfs.h" #include "xfs_fs.h" -#include "xfs_types.h" +#include "xfs_format.h" #include "xfs_bit.h" #include "xfs_log.h" #include "xfs_inum.h" #include "xfs_trans.h" #include "xfs_sb.h" #include "xfs_ag.h" -#include "xfs_dir2.h" #include "xfs_mount.h" #include "xfs_da_btree.h" +#include "xfs_dir2_format.h" +#include "xfs_dir2.h" #include "xfs_bmap_btree.h" #include "xfs_alloc_btree.h" #include "xfs_ialloc_btree.h" @@ -39,6 +40,7 @@ #include "xfs_extfree_item.h" #include "xfs_alloc.h" #include "xfs_bmap.h" +#include "xfs_bmap_util.h" #include "xfs_rtalloc.h" #include "xfs_error.h" #include "xfs_attr_leaf.h" @@ -46,7 +48,6 @@ #include "xfs_trans_space.h" #include "xfs_buf_item.h" #include "xfs_filestream.h" -#include "xfs_vnodeops.h" #include "xfs_trace.h" #include "xfs_symlink.h" @@ -108,19 +109,6 @@ xfs_bmap_compute_maxlevels( mp->m_bm_maxlevels[whichfork] = level; } -/* - * Convert the given file system block to a disk block. We have to treat it - * differently based on whether the file is a real time file or not, because the - * bmap code does. - */ -xfs_daddr_t -xfs_fsb_to_db(struct xfs_inode *ip, xfs_fsblock_t fsb) -{ - return (XFS_IS_REALTIME_INODE(ip) ? \ - (xfs_daddr_t)XFS_FSB_TO_BB((ip)->i_mount, (fsb)) : \ - XFS_FSB_TO_DADDR((ip)->i_mount, (fsb))); -} - STATIC int /* error */ xfs_bmbt_lookup_eq( struct xfs_btree_cur *cur, @@ -263,173 +251,6 @@ xfs_bmap_forkoff_reset( } /* - * Extent tree block counting routines. - */ - -/* - * Count leaf blocks given a range of extent records. - */ -STATIC void -xfs_bmap_count_leaves( - xfs_ifork_t *ifp, - xfs_extnum_t idx, - int numrecs, - int *count) -{ - int b; - - for (b = 0; b < numrecs; b++) { - xfs_bmbt_rec_host_t *frp = xfs_iext_get_ext(ifp, idx + b); - *count += xfs_bmbt_get_blockcount(frp); - } -} - -/* - * Count leaf blocks given a range of extent records originally - * in btree format. - */ -STATIC void -xfs_bmap_disk_count_leaves( - struct xfs_mount *mp, - struct xfs_btree_block *block, - int numrecs, - int *count) -{ - int b; - xfs_bmbt_rec_t *frp; - - for (b = 1; b <= numrecs; b++) { - frp = XFS_BMBT_REC_ADDR(mp, block, b); - *count += xfs_bmbt_disk_get_blockcount(frp); - } -} - -/* - * Recursively walks each level of a btree - * to count total fsblocks is use. - */ -STATIC int /* error */ -xfs_bmap_count_tree( - xfs_mount_t *mp, /* file system mount point */ - xfs_trans_t *tp, /* transaction pointer */ - xfs_ifork_t *ifp, /* inode fork pointer */ - xfs_fsblock_t blockno, /* file system block number */ - int levelin, /* level in btree */ - int *count) /* Count of blocks */ -{ - int error; - xfs_buf_t *bp, *nbp; - int level = levelin; - __be64 *pp; - xfs_fsblock_t bno = blockno; - xfs_fsblock_t nextbno; - struct xfs_btree_block *block, *nextblock; - int numrecs; - - error = xfs_btree_read_bufl(mp, tp, bno, 0, &bp, XFS_BMAP_BTREE_REF, - &xfs_bmbt_buf_ops); - if (error) - return error; - *count += 1; - block = XFS_BUF_TO_BLOCK(bp); - - if (--level) { - /* Not at node above leaves, count this level of nodes */ - nextbno = be64_to_cpu(block->bb_u.l.bb_rightsib); - while (nextbno != NULLFSBLOCK) { - error = xfs_btree_read_bufl(mp, tp, nextbno, 0, &nbp, - XFS_BMAP_BTREE_REF, - &xfs_bmbt_buf_ops); - if (error) - return error; - *count += 1; - nextblock = XFS_BUF_TO_BLOCK(nbp); - nextbno = be64_to_cpu(nextblock->bb_u.l.bb_rightsib); - xfs_trans_brelse(tp, nbp); - } - - /* Dive to the next level */ - pp = XFS_BMBT_PTR_ADDR(mp, block, 1, mp->m_bmap_dmxr[1]); - bno = be64_to_cpu(*pp); - if (unlikely((error = - xfs_bmap_count_tree(mp, tp, ifp, bno, level, count)) < 0)) { - xfs_trans_brelse(tp, bp); - XFS_ERROR_REPORT("xfs_bmap_count_tree(1)", - XFS_ERRLEVEL_LOW, mp); - return XFS_ERROR(EFSCORRUPTED); - } - xfs_trans_brelse(tp, bp); - } else { - /* count all level 1 nodes and their leaves */ - for (;;) { - nextbno = be64_to_cpu(block->bb_u.l.bb_rightsib); - numrecs = be16_to_cpu(block->bb_numrecs); - xfs_bmap_disk_count_leaves(mp, block, numrecs, count); - xfs_trans_brelse(tp, bp); - if (nextbno == NULLFSBLOCK) - break; - bno = nextbno; - error = xfs_btree_read_bufl(mp, tp, bno, 0, &bp, - XFS_BMAP_BTREE_REF, - &xfs_bmbt_buf_ops); - if (error) - return error; - *count += 1; - block = XFS_BUF_TO_BLOCK(bp); - } - } - return 0; -} - -/* - * Count fsblocks of the given fork. - */ -int /* error */ -xfs_bmap_count_blocks( - xfs_trans_t *tp, /* transaction pointer */ - xfs_inode_t *ip, /* incore inode */ - int whichfork, /* data or attr fork */ - int *count) /* out: count of blocks */ -{ - struct xfs_btree_block *block; /* current btree block */ - xfs_fsblock_t bno; /* block # of "block" */ - xfs_ifork_t *ifp; /* fork structure */ - int level; /* btree level, for checking */ - xfs_mount_t *mp; /* file system mount structure */ - __be64 *pp; /* pointer to block address */ - - bno = NULLFSBLOCK; - mp = ip->i_mount; - ifp = XFS_IFORK_PTR(ip, whichfork); - if ( XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_EXTENTS ) { - xfs_bmap_count_leaves(ifp, 0, - ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t), - count); - return 0; - } - - /* - * Root level must use BMAP_BROOT_PTR_ADDR macro to get ptr out. - */ - block = ifp->if_broot; - level = be16_to_cpu(block->bb_level); - ASSERT(level > 0); - pp = XFS_BMAP_BROOT_PTR_ADDR(mp, block, 1, ifp->if_broot_bytes); - bno = be64_to_cpu(*pp); - ASSERT(bno != NULLDFSBNO); - ASSERT(XFS_FSB_TO_AGNO(mp, bno) < mp->m_sb.sb_agcount); - ASSERT(XFS_FSB_TO_AGBNO(mp, bno) < mp->m_sb.sb_agblocks); - - if (unlikely(xfs_bmap_count_tree(mp, tp, ifp, bno, level, count) < 0)) { - XFS_ERROR_REPORT("xfs_bmap_count_blocks(2)", XFS_ERRLEVEL_LOW, - mp); - return XFS_ERROR(EFSCORRUPTED); - } - - return 0; -} - -/* * Debug/sanity checking code */ @@ -724,8 +545,8 @@ xfs_bmap_trace_exlist( /* * Validate that the bmbt_irecs being returned from bmapi are valid - * given the callers original parameters. Specifically check the - * ranges of the returned irecs to ensure that they only extent beyond + * given the caller's original parameters. Specifically check the + * ranges of the returned irecs to ensure that they only extend beyond * the given parameters if the XFS_BMAPI_ENTIRE flag was set. */ STATIC void @@ -823,7 +644,7 @@ xfs_bmap_add_free( * Remove the entry "free" from the free item list. Prev points to the * previous entry, unless "free" is the head of the list. */ -STATIC void +void xfs_bmap_del_free( xfs_bmap_free_t *flist, /* free item list header */ xfs_bmap_free_item_t *prev, /* previous item on list, if any */ @@ -837,92 +658,6 @@ xfs_bmap_del_free( kmem_zone_free(xfs_bmap_free_item_zone, free); } - -/* - * Routine to be called at transaction's end by xfs_bmapi, xfs_bunmapi - * caller. Frees all the extents that need freeing, which must be done - * last due to locking considerations. We never free any extents in - * the first transaction. - * - * Return 1 if the given transaction was committed and a new one - * started, and 0 otherwise in the committed parameter. - */ -int /* error */ -xfs_bmap_finish( - xfs_trans_t **tp, /* transaction pointer addr */ - xfs_bmap_free_t *flist, /* i/o: list extents to free */ - int *committed) /* xact committed or not */ -{ - xfs_efd_log_item_t *efd; /* extent free data */ - xfs_efi_log_item_t *efi; /* extent free intention */ - int error; /* error return value */ - xfs_bmap_free_item_t *free; /* free extent item */ - unsigned int logres; /* new log reservation */ - unsigned int logcount; /* new log count */ - xfs_mount_t *mp; /* filesystem mount structure */ - xfs_bmap_free_item_t *next; /* next item on free list */ - xfs_trans_t *ntp; /* new transaction pointer */ - - ASSERT((*tp)->t_flags & XFS_TRANS_PERM_LOG_RES); - if (flist->xbf_count == 0) { - *committed = 0; - return 0; - } - ntp = *tp; - efi = xfs_trans_get_efi(ntp, flist->xbf_count); - for (free = flist->xbf_first; free; free = free->xbfi_next) - xfs_trans_log_efi_extent(ntp, efi, free->xbfi_startblock, - free->xbfi_blockcount); - logres = ntp->t_log_res; - logcount = ntp->t_log_count; - ntp = xfs_trans_dup(*tp); - error = xfs_trans_commit(*tp, 0); - *tp = ntp; - *committed = 1; - /* - * We have a new transaction, so we should return committed=1, - * even though we're returning an error. - */ - if (error) - return error; - - /* - * transaction commit worked ok so we can drop the extra ticket - * reference that we gained in xfs_trans_dup() - */ - xfs_log_ticket_put(ntp->t_ticket); - - if ((error = xfs_trans_reserve(ntp, 0, logres, 0, XFS_TRANS_PERM_LOG_RES, - logcount))) - return error; - efd = xfs_trans_get_efd(ntp, efi, flist->xbf_count); - for (free = flist->xbf_first; free != NULL; free = next) { - next = free->xbfi_next; - if ((error = xfs_free_extent(ntp, free->xbfi_startblock, - free->xbfi_blockcount))) { - /* - * The bmap free list will be cleaned up at a - * higher level. The EFI will be canceled when - * this transaction is aborted. - * Need to force shutdown here to make sure it - * happens, since this transaction may not be - * dirty yet. - */ - mp = ntp->t_mountp; - if (!XFS_FORCED_SHUTDOWN(mp)) - xfs_force_shutdown(mp, - (error == EFSCORRUPTED) ? - SHUTDOWN_CORRUPT_INCORE : - SHUTDOWN_META_IO_ERROR); - return error; - } - xfs_trans_log_efd_extent(ntp, efd, free->xbfi_startblock, - free->xbfi_blockcount); - xfs_bmap_del_free(flist, NULL, free); - } - return 0; -} - /* * Free up any items left in the list. */ @@ -1413,8 +1148,8 @@ xfs_bmap_add_attrfork( blks = XFS_ADDAFORK_SPACE_RES(mp); if (rsvd) tp->t_flags |= XFS_TRANS_RESERVE; - if ((error = xfs_trans_reserve(tp, blks, XFS_ADDAFORK_LOG_RES(mp), 0, - XFS_TRANS_PERM_LOG_RES, XFS_ADDAFORK_LOG_COUNT))) + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_addafork, blks, 0); + if (error) goto error0; xfs_ilock(ip, XFS_ILOCK_EXCL); error = xfs_trans_reserve_quota_nblks(tp, ip, blks, 0, rsvd ? @@ -1815,7 +1550,7 @@ xfs_bmap_first_unused( } /* - * Returns the file-relative block number of the last block + 1 before + * Returns the file-relative block number of the last block - 1 before * last_block (input value) in the file. * This is not based on i_size, it is based on the extent records. * Returns 0 for local files, as they do not have extent records. @@ -1863,7 +1598,7 @@ xfs_bmap_last_before( return 0; } -STATIC int +int xfs_bmap_last_extent( struct xfs_trans *tp, struct xfs_inode *ip, @@ -1927,29 +1662,6 @@ xfs_bmap_isaeof( } /* - * Check if the endoff is outside the last extent. If so the caller will grow - * the allocation to a stripe unit boundary. All offsets are considered outside - * the end of file for an empty fork, so 1 is returned in *eof in that case. - */ -int -xfs_bmap_eof( - struct xfs_inode *ip, - xfs_fileoff_t endoff, - int whichfork, - int *eof) -{ - struct xfs_bmbt_irec rec; - int error; - - error = xfs_bmap_last_extent(NULL, ip, whichfork, &rec, eof); - if (error || *eof) - return error; - - *eof = endoff >= rec.br_startoff + rec.br_blockcount; - return 0; -} - -/* * Returns the file-relative block number of the first block past eof in * the file. This is not based on i_size, it is based on the extent records. * Returns 0 for local files, as they do not have extent records. @@ -3488,7 +3200,7 @@ done: /* * Adjust the size of the new extent based on di_extsize and rt extsize. */ -STATIC int +int xfs_bmap_extsize_align( xfs_mount_t *mp, xfs_bmbt_irec_t *gotp, /* next extent pointer */ @@ -3650,9 +3362,9 @@ xfs_bmap_extsize_align( #define XFS_ALLOC_GAP_UNITS 4 -STATIC void +void xfs_bmap_adjacent( - xfs_bmalloca_t *ap) /* bmap alloc argument struct */ + struct xfs_bmalloca *ap) /* bmap alloc argument struct */ { xfs_fsblock_t adjust; /* adjustment to block numbers */ xfs_agnumber_t fb_agno; /* ag number of ap->firstblock */ @@ -3799,109 +3511,6 @@ xfs_bmap_adjacent( } STATIC int -xfs_bmap_rtalloc( - xfs_bmalloca_t *ap) /* bmap alloc argument struct */ -{ - xfs_alloctype_t atype = 0; /* type for allocation routines */ - int error; /* error return value */ - xfs_mount_t *mp; /* mount point structure */ - xfs_extlen_t prod = 0; /* product factor for allocators */ - xfs_extlen_t ralen = 0; /* realtime allocation length */ - xfs_extlen_t align; /* minimum allocation alignment */ - xfs_rtblock_t rtb; - - mp = ap->ip->i_mount; - align = xfs_get_extsz_hint(ap->ip); - prod = align / mp->m_sb.sb_rextsize; - error = xfs_bmap_extsize_align(mp, &ap->got, &ap->prev, - align, 1, ap->eof, 0, - ap->conv, &ap->offset, &ap->length); - if (error) - return error; - ASSERT(ap->length); - ASSERT(ap->length % mp->m_sb.sb_rextsize == 0); - - /* - * If the offset & length are not perfectly aligned - * then kill prod, it will just get us in trouble. - */ - if (do_mod(ap->offset, align) || ap->length % align) - prod = 1; - /* - * Set ralen to be the actual requested length in rtextents. - */ - ralen = ap->length / mp->m_sb.sb_rextsize; - /* - * If the old value was close enough to MAXEXTLEN that - * we rounded up to it, cut it back so it's valid again. - * Note that if it's a really large request (bigger than - * MAXEXTLEN), we don't hear about that number, and can't - * adjust the starting point to match it. - */ - if (ralen * mp->m_sb.sb_rextsize >= MAXEXTLEN) - ralen = MAXEXTLEN / mp->m_sb.sb_rextsize; - - /* - * Lock out other modifications to the RT bitmap inode. - */ - xfs_ilock(mp->m_rbmip, XFS_ILOCK_EXCL); - xfs_trans_ijoin(ap->tp, mp->m_rbmip, XFS_ILOCK_EXCL); - - /* - * If it's an allocation to an empty file at offset 0, - * pick an extent that will space things out in the rt area. - */ - if (ap->eof && ap->offset == 0) { - xfs_rtblock_t uninitialized_var(rtx); /* realtime extent no */ - - error = xfs_rtpick_extent(mp, ap->tp, ralen, &rtx); - if (error) - return error; - ap->blkno = rtx * mp->m_sb.sb_rextsize; - } else { - ap->blkno = 0; - } - - xfs_bmap_adjacent(ap); - - /* - * Realtime allocation, done through xfs_rtallocate_extent. - */ - atype = ap->blkno == 0 ? XFS_ALLOCTYPE_ANY_AG : XFS_ALLOCTYPE_NEAR_BNO; - do_div(ap->blkno, mp->m_sb.sb_rextsize); - rtb = ap->blkno; - ap->length = ralen; - if ((error = xfs_rtallocate_extent(ap->tp, ap->blkno, 1, ap->length, - &ralen, atype, ap->wasdel, prod, &rtb))) - return error; - if (rtb == NULLFSBLOCK && prod > 1 && - (error = xfs_rtallocate_extent(ap->tp, ap->blkno, 1, - ap->length, &ralen, atype, - ap->wasdel, 1, &rtb))) - return error; - ap->blkno = rtb; - if (ap->blkno != NULLFSBLOCK) { - ap->blkno *= mp->m_sb.sb_rextsize; - ralen *= mp->m_sb.sb_rextsize; - ap->length = ralen; - ap->ip->i_d.di_nblocks += ralen; - xfs_trans_log_inode(ap->tp, ap->ip, XFS_ILOG_CORE); - if (ap->wasdel) - ap->ip->i_delayed_blks -= ralen; - /* - * Adjust the disk quota also. This was reserved - * earlier. - */ - xfs_trans_mod_dquot_byino(ap->tp, ap->ip, - ap->wasdel ? XFS_TRANS_DQ_DELRTBCOUNT : - XFS_TRANS_DQ_RTBCOUNT, (long) ralen); - } else { - ap->length = 0; - } - return 0; -} - -STATIC int xfs_bmap_btalloc_nullfb( struct xfs_bmalloca *ap, struct xfs_alloc_arg *args, @@ -4018,7 +3627,7 @@ xfs_bmap_btalloc_nullfb( STATIC int xfs_bmap_btalloc( - xfs_bmalloca_t *ap) /* bmap alloc argument struct */ + struct xfs_bmalloca *ap) /* bmap alloc argument struct */ { xfs_mount_t *mp; /* mount point structure */ xfs_alloctype_t atype = 0; /* type for allocation routines */ @@ -4250,7 +3859,7 @@ xfs_bmap_btalloc( */ STATIC int xfs_bmap_alloc( - xfs_bmalloca_t *ap) /* bmap alloc argument struct */ + struct xfs_bmalloca *ap) /* bmap alloc argument struct */ { if (XFS_IS_REALTIME_INODE(ap->ip) && ap->userdata) return xfs_bmap_rtalloc(ap); @@ -4638,7 +4247,7 @@ xfs_bmapi_delay( } -STATIC int +int __xfs_bmapi_allocate( struct xfs_bmalloca *bma) { @@ -4648,12 +4257,9 @@ __xfs_bmapi_allocate( struct xfs_ifork *ifp = XFS_IFORK_PTR(bma->ip, whichfork); int tmp_logflags = 0; int error; - int rt; ASSERT(bma->length > 0); - rt = (whichfork == XFS_DATA_FORK) && XFS_IS_REALTIME_INODE(bma->ip); - /* * For the wasdelay case, we could also just allocate the stuff asked * for in this bmap call but that wouldn't be as good. @@ -4756,45 +4362,6 @@ __xfs_bmapi_allocate( return 0; } -static void -xfs_bmapi_allocate_worker( - struct work_struct *work) -{ - struct xfs_bmalloca *args = container_of(work, - struct xfs_bmalloca, work); - unsigned long pflags; - - /* we are in a transaction context here */ - current_set_flags_nested(&pflags, PF_FSTRANS); - - args->result = __xfs_bmapi_allocate(args); - complete(args->done); - - current_restore_flags_nested(&pflags, PF_FSTRANS); -} - -/* - * Some allocation requests often come in with little stack to work on. Push - * them off to a worker thread so there is lots of stack to use. Otherwise just - * call directly to avoid the context switch overhead here. - */ -int -xfs_bmapi_allocate( - struct xfs_bmalloca *args) -{ - DECLARE_COMPLETION_ONSTACK(done); - - if (!args->stack_switch) - return __xfs_bmapi_allocate(args); - - - args->done = &done; - INIT_WORK_ONSTACK(&args->work, xfs_bmapi_allocate_worker); - queue_work(xfs_alloc_wq, &args->work); - wait_for_completion(&done); - return args->result; -} - STATIC int xfs_bmapi_convert_unwritten( struct xfs_bmalloca *bma, @@ -5789,359 +5356,3 @@ error0: } return error; } - -/* - * returns 1 for success, 0 if we failed to map the extent. - */ -STATIC int -xfs_getbmapx_fix_eof_hole( - xfs_inode_t *ip, /* xfs incore inode pointer */ - struct getbmapx *out, /* output structure */ - int prealloced, /* this is a file with - * preallocated data space */ - __int64_t end, /* last block requested */ - xfs_fsblock_t startblock) -{ - __int64_t fixlen; - xfs_mount_t *mp; /* file system mount point */ - xfs_ifork_t *ifp; /* inode fork pointer */ - xfs_extnum_t lastx; /* last extent pointer */ - xfs_fileoff_t fileblock; - - if (startblock == HOLESTARTBLOCK) { - mp = ip->i_mount; - out->bmv_block = -1; - fixlen = XFS_FSB_TO_BB(mp, XFS_B_TO_FSB(mp, XFS_ISIZE(ip))); - fixlen -= out->bmv_offset; - if (prealloced && out->bmv_offset + out->bmv_length == end) { - /* Came to hole at EOF. Trim it. */ - if (fixlen <= 0) - return 0; - out->bmv_length = fixlen; - } - } else { - if (startblock == DELAYSTARTBLOCK) - out->bmv_block = -2; - else - out->bmv_block = xfs_fsb_to_db(ip, startblock); - fileblock = XFS_BB_TO_FSB(ip->i_mount, out->bmv_offset); - ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK); - if (xfs_iext_bno_to_ext(ifp, fileblock, &lastx) && - (lastx == (ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t))-1)) - out->bmv_oflags |= BMV_OF_LAST; - } - - return 1; -} - -/* - * Get inode's extents as described in bmv, and format for output. - * Calls formatter to fill the user's buffer until all extents - * are mapped, until the passed-in bmv->bmv_count slots have - * been filled, or until the formatter short-circuits the loop, - * if it is tracking filled-in extents on its own. - */ -int /* error code */ -xfs_getbmap( - xfs_inode_t *ip, - struct getbmapx *bmv, /* user bmap structure */ - xfs_bmap_format_t formatter, /* format to user */ - void *arg) /* formatter arg */ -{ - __int64_t bmvend; /* last block requested */ - int error = 0; /* return value */ - __int64_t fixlen; /* length for -1 case */ - int i; /* extent number */ - int lock; /* lock state */ - xfs_bmbt_irec_t *map; /* buffer for user's data */ - xfs_mount_t *mp; /* file system mount point */ - int nex; /* # of user extents can do */ - int nexleft; /* # of user extents left */ - int subnex; /* # of bmapi's can do */ - int nmap; /* number of map entries */ - struct getbmapx *out; /* output structure */ - int whichfork; /* data or attr fork */ - int prealloced; /* this is a file with - * preallocated data space */ - int iflags; /* interface flags */ - int bmapi_flags; /* flags for xfs_bmapi */ - int cur_ext = 0; - - mp = ip->i_mount; - iflags = bmv->bmv_iflags; - whichfork = iflags & BMV_IF_ATTRFORK ? XFS_ATTR_FORK : XFS_DATA_FORK; - - if (whichfork == XFS_ATTR_FORK) { - if (XFS_IFORK_Q(ip)) { - if (ip->i_d.di_aformat != XFS_DINODE_FMT_EXTENTS && - ip->i_d.di_aformat != XFS_DINODE_FMT_BTREE && - ip->i_d.di_aformat != XFS_DINODE_FMT_LOCAL) - return XFS_ERROR(EINVAL); - } else if (unlikely( - ip->i_d.di_aformat != 0 && - ip->i_d.di_aformat != XFS_DINODE_FMT_EXTENTS)) { - XFS_ERROR_REPORT("xfs_getbmap", XFS_ERRLEVEL_LOW, - ip->i_mount); - return XFS_ERROR(EFSCORRUPTED); - } - - prealloced = 0; - fixlen = 1LL << 32; - } else { - if (ip->i_d.di_format != XFS_DINODE_FMT_EXTENTS && - ip->i_d.di_format != XFS_DINODE_FMT_BTREE && - ip->i_d.di_format != XFS_DINODE_FMT_LOCAL) - return XFS_ERROR(EINVAL); - - if (xfs_get_extsz_hint(ip) || - ip->i_d.di_flags & (XFS_DIFLAG_PREALLOC|XFS_DIFLAG_APPEND)){ - prealloced = 1; - fixlen = mp->m_super->s_maxbytes; - } else { - prealloced = 0; - fixlen = XFS_ISIZE(ip); - } - } - - if (bmv->bmv_length == -1) { - fixlen = XFS_FSB_TO_BB(mp, XFS_B_TO_FSB(mp, fixlen)); - bmv->bmv_length = - max_t(__int64_t, fixlen - bmv->bmv_offset, 0); - } else if (bmv->bmv_length == 0) { - bmv->bmv_entries = 0; - return 0; - } else if (bmv->bmv_length < 0) { - return XFS_ERROR(EINVAL); - } - - nex = bmv->bmv_count - 1; - if (nex <= 0) - return XFS_ERROR(EINVAL); - bmvend = bmv->bmv_offset + bmv->bmv_length; - - - if (bmv->bmv_count > ULONG_MAX / sizeof(struct getbmapx)) - return XFS_ERROR(ENOMEM); - out = kmem_zalloc(bmv->bmv_count * sizeof(struct getbmapx), KM_MAYFAIL); - if (!out) { - out = kmem_zalloc_large(bmv->bmv_count * - sizeof(struct getbmapx)); - if (!out) - return XFS_ERROR(ENOMEM); - } - - xfs_ilock(ip, XFS_IOLOCK_SHARED); - if (whichfork == XFS_DATA_FORK && !(iflags & BMV_IF_DELALLOC)) { - if (ip->i_delayed_blks || XFS_ISIZE(ip) > ip->i_d.di_size) { - error = -filemap_write_and_wait(VFS_I(ip)->i_mapping); - if (error) - goto out_unlock_iolock; - } - /* - * even after flushing the inode, there can still be delalloc - * blocks on the inode beyond EOF due to speculative - * preallocation. These are not removed until the release - * function is called or the inode is inactivated. Hence we - * cannot assert here that ip->i_delayed_blks == 0. - */ - } - - lock = xfs_ilock_map_shared(ip); - - /* - * Don't let nex be bigger than the number of extents - * we can have assuming alternating holes and real extents. - */ - if (nex > XFS_IFORK_NEXTENTS(ip, whichfork) * 2 + 1) - nex = XFS_IFORK_NEXTENTS(ip, whichfork) * 2 + 1; - - bmapi_flags = xfs_bmapi_aflag(whichfork); - if (!(iflags & BMV_IF_PREALLOC)) - bmapi_flags |= XFS_BMAPI_IGSTATE; - - /* - * Allocate enough space to handle "subnex" maps at a time. - */ - error = ENOMEM; - subnex = 16; - map = kmem_alloc(subnex * sizeof(*map), KM_MAYFAIL | KM_NOFS); - if (!map) - goto out_unlock_ilock; - - bmv->bmv_entries = 0; - - if (XFS_IFORK_NEXTENTS(ip, whichfork) == 0 && - (whichfork == XFS_ATTR_FORK || !(iflags & BMV_IF_DELALLOC))) { - error = 0; - goto out_free_map; - } - - nexleft = nex; - - do { - nmap = (nexleft > subnex) ? subnex : nexleft; - error = xfs_bmapi_read(ip, XFS_BB_TO_FSBT(mp, bmv->bmv_offset), - XFS_BB_TO_FSB(mp, bmv->bmv_length), - map, &nmap, bmapi_flags); - if (error) - goto out_free_map; - ASSERT(nmap <= subnex); - - for (i = 0; i < nmap && nexleft && bmv->bmv_length; i++) { - out[cur_ext].bmv_oflags = 0; - if (map[i].br_state == XFS_EXT_UNWRITTEN) - out[cur_ext].bmv_oflags |= BMV_OF_PREALLOC; - else if (map[i].br_startblock == DELAYSTARTBLOCK) - out[cur_ext].bmv_oflags |= BMV_OF_DELALLOC; - out[cur_ext].bmv_offset = - XFS_FSB_TO_BB(mp, map[i].br_startoff); - out[cur_ext].bmv_length = - XFS_FSB_TO_BB(mp, map[i].br_blockcount); - out[cur_ext].bmv_unused1 = 0; - out[cur_ext].bmv_unused2 = 0; - - /* - * delayed allocation extents that start beyond EOF can - * occur due to speculative EOF allocation when the - * delalloc extent is larger than the largest freespace - * extent at conversion time. These extents cannot be - * converted by data writeback, so can exist here even - * if we are not supposed to be finding delalloc - * extents. - */ - if (map[i].br_startblock == DELAYSTARTBLOCK && - map[i].br_startoff <= XFS_B_TO_FSB(mp, XFS_ISIZE(ip))) - ASSERT((iflags & BMV_IF_DELALLOC) != 0); - - if (map[i].br_startblock == HOLESTARTBLOCK && - whichfork == XFS_ATTR_FORK) { - /* came to the end of attribute fork */ - out[cur_ext].bmv_oflags |= BMV_OF_LAST; - goto out_free_map; - } - - if (!xfs_getbmapx_fix_eof_hole(ip, &out[cur_ext], - prealloced, bmvend, - map[i].br_startblock)) - goto out_free_map; - - bmv->bmv_offset = - out[cur_ext].bmv_offset + - out[cur_ext].bmv_length; - bmv->bmv_length = - max_t(__int64_t, 0, bmvend - bmv->bmv_offset); - - /* - * In case we don't want to return the hole, - * don't increase cur_ext so that we can reuse - * it in the next loop. - */ - if ((iflags & BMV_IF_NO_HOLES) && - map[i].br_startblock == HOLESTARTBLOCK) { - memset(&out[cur_ext], 0, sizeof(out[cur_ext])); - continue; - } - - nexleft--; - bmv->bmv_entries++; - cur_ext++; - } - } while (nmap && nexleft && bmv->bmv_length); - - out_free_map: - kmem_free(map); - out_unlock_ilock: - xfs_iunlock_map_shared(ip, lock); - out_unlock_iolock: - xfs_iunlock(ip, XFS_IOLOCK_SHARED); - - for (i = 0; i < cur_ext; i++) { - int full = 0; /* user array is full */ - - /* format results & advance arg */ - error = formatter(&arg, &out[i], &full); - if (error || full) - break; - } - - if (is_vmalloc_addr(out)) - kmem_free_large(out); - else - kmem_free(out); - return error; -} - -/* - * dead simple method of punching delalyed allocation blocks from a range in - * the inode. Walks a block at a time so will be slow, but is only executed in - * rare error cases so the overhead is not critical. This will alays punch out - * both the start and end blocks, even if the ranges only partially overlap - * them, so it is up to the caller to ensure that partial blocks are not - * passed in. - */ -int -xfs_bmap_punch_delalloc_range( - struct xfs_inode *ip, - xfs_fileoff_t start_fsb, - xfs_fileoff_t length) -{ - xfs_fileoff_t remaining = length; - int error = 0; - - ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); - - do { - int done; - xfs_bmbt_irec_t imap; - int nimaps = 1; - xfs_fsblock_t firstblock; - xfs_bmap_free_t flist; - - /* - * Map the range first and check that it is a delalloc extent - * before trying to unmap the range. Otherwise we will be - * trying to remove a real extent (which requires a - * transaction) or a hole, which is probably a bad idea... - */ - error = xfs_bmapi_read(ip, start_fsb, 1, &imap, &nimaps, - XFS_BMAPI_ENTIRE); - - if (error) { - /* something screwed, just bail */ - if (!XFS_FORCED_SHUTDOWN(ip->i_mount)) { - xfs_alert(ip->i_mount, - "Failed delalloc mapping lookup ino %lld fsb %lld.", - ip->i_ino, start_fsb); - } - break; - } - if (!nimaps) { - /* nothing there */ - goto next_block; - } - if (imap.br_startblock != DELAYSTARTBLOCK) { - /* been converted, ignore */ - goto next_block; - } - WARN_ON(imap.br_blockcount == 0); - - /* - * Note: while we initialise the firstblock/flist pair, they - * should never be used because blocks should never be - * allocated or freed for a delalloc extent and hence we need - * don't cancel or finish them after the xfs_bunmapi() call. - */ - xfs_bmap_init(&flist, &firstblock); - error = xfs_bunmapi(NULL, ip, start_fsb, 1, 0, 1, &firstblock, - &flist, &done); - if (error) - break; - - ASSERT(!flist.xbf_count && !flist.xbf_first); -next_block: - start_fsb++; - remaining--; - } while(remaining > 0); - - return error; -} diff --git a/fs/xfs/xfs_bmap.h b/fs/xfs/xfs_bmap.h index 1cf1292..33b41f3 100644 --- a/fs/xfs/xfs_bmap.h +++ b/fs/xfs/xfs_bmap.h @@ -108,41 +108,6 @@ static inline void xfs_bmap_init(xfs_bmap_free_t *flp, xfs_fsblock_t *fbp) } /* - * Argument structure for xfs_bmap_alloc. - */ -typedef struct xfs_bmalloca { - xfs_fsblock_t *firstblock; /* i/o first block allocated */ - struct xfs_bmap_free *flist; /* bmap freelist */ - struct xfs_trans *tp; /* transaction pointer */ - struct xfs_inode *ip; /* incore inode pointer */ - struct xfs_bmbt_irec prev; /* extent before the new one */ - struct xfs_bmbt_irec got; /* extent after, or delayed */ - - xfs_fileoff_t offset; /* offset in file filling in */ - xfs_extlen_t length; /* i/o length asked/allocated */ - xfs_fsblock_t blkno; /* starting block of new extent */ - - struct xfs_btree_cur *cur; /* btree cursor */ - xfs_extnum_t idx; /* current extent index */ - int nallocs;/* number of extents alloc'd */ - int logflags;/* flags for transaction logging */ - - xfs_extlen_t total; /* total blocks needed for xaction */ - xfs_extlen_t minlen; /* minimum allocation size (blocks) */ - xfs_extlen_t minleft; /* amount must be left after alloc */ - char eof; /* set if allocating past last extent */ - char wasdel; /* replacing a delayed allocation */ - char userdata;/* set if is user data */ - char aeof; /* allocated space at eof */ - char conv; /* overwriting unwritten extents */ - char stack_switch; - int flags; - struct completion *done; - struct work_struct work; - int result; -} xfs_bmalloca_t; - -/* * Flags for xfs_bmap_add_extent*. */ #define BMAP_LEFT_CONTIG (1 << 0) @@ -162,7 +127,7 @@ typedef struct xfs_bmalloca { { BMAP_RIGHT_FILLING, "RF" }, \ { BMAP_ATTRFORK, "ATTR" } -#if defined(__KERNEL) && defined(DEBUG) +#ifdef DEBUG void xfs_bmap_trace_exlist(struct xfs_inode *ip, xfs_extnum_t cnt, int whichfork, unsigned long caller_ip); #define XFS_BMAP_TRACE_EXLIST(ip,c,w) \ @@ -205,23 +170,4 @@ int xfs_check_nostate_extents(struct xfs_ifork *ifp, xfs_extnum_t idx, xfs_extnum_t num); uint xfs_default_attroffset(struct xfs_inode *ip); -#ifdef __KERNEL__ -/* bmap to userspace formatter - copy to user & advance pointer */ -typedef int (*xfs_bmap_format_t)(void **, struct getbmapx *, int *); - -int xfs_bmap_finish(struct xfs_trans **tp, struct xfs_bmap_free *flist, - int *committed); -int xfs_getbmap(struct xfs_inode *ip, struct getbmapx *bmv, - xfs_bmap_format_t formatter, void *arg); -int xfs_bmap_eof(struct xfs_inode *ip, xfs_fileoff_t endoff, - int whichfork, int *eof); -int xfs_bmap_count_blocks(struct xfs_trans *tp, struct xfs_inode *ip, - int whichfork, int *count); -int xfs_bmap_punch_delalloc_range(struct xfs_inode *ip, - xfs_fileoff_t start_fsb, xfs_fileoff_t length); - -xfs_daddr_t xfs_fsb_to_db(struct xfs_inode *ip, xfs_fsblock_t fsb); - -#endif /* __KERNEL__ */ - #endif /* __XFS_BMAP_H__ */ diff --git a/fs/xfs/xfs_bmap_btree.c b/fs/xfs/xfs_bmap_btree.c index 0c61a22..cf3bc76 100644 --- a/fs/xfs/xfs_bmap_btree.c +++ b/fs/xfs/xfs_bmap_btree.c @@ -17,7 +17,7 @@ */ #include "xfs.h" #include "xfs_fs.h" -#include "xfs_types.h" +#include "xfs_format.h" #include "xfs_bit.h" #include "xfs_log.h" #include "xfs_trans.h" @@ -722,7 +722,7 @@ xfs_bmbt_key_diff( cur->bc_rec.b.br_startoff; } -static int +static bool xfs_bmbt_verify( struct xfs_buf *bp) { @@ -775,7 +775,6 @@ xfs_bmbt_verify( return false; return true; - } static void @@ -789,7 +788,6 @@ xfs_bmbt_read_verify( bp->b_target->bt_mount, bp->b_addr); xfs_buf_ioerror(bp, EFSCORRUPTED); } - } static void diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c new file mode 100644 index 0000000..541d59f --- /dev/null +++ b/fs/xfs/xfs_bmap_util.c @@ -0,0 +1,2026 @@ +/* + * Copyright (c) 2000-2006 Silicon Graphics, Inc. + * Copyright (c) 2012 Red Hat, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include "xfs.h" +#include "xfs_fs.h" +#include "xfs_format.h" +#include "xfs_bit.h" +#include "xfs_log.h" +#include "xfs_inum.h" +#include "xfs_trans.h" +#include "xfs_sb.h" +#include "xfs_ag.h" +#include "xfs_mount.h" +#include "xfs_da_btree.h" +#include "xfs_bmap_btree.h" +#include "xfs_alloc_btree.h" +#include "xfs_ialloc_btree.h" +#include "xfs_dinode.h" +#include "xfs_inode.h" +#include "xfs_btree.h" +#include "xfs_extfree_item.h" +#include "xfs_alloc.h" +#include "xfs_bmap.h" +#include "xfs_bmap_util.h" +#include "xfs_rtalloc.h" +#include "xfs_error.h" +#include "xfs_quota.h" +#include "xfs_trans_space.h" +#include "xfs_trace.h" +#include "xfs_icache.h" + +/* Kernel only BMAP related definitions and functions */ + +/* + * Convert the given file system block to a disk block. We have to treat it + * differently based on whether the file is a real time file or not, because the + * bmap code does. + */ +xfs_daddr_t +xfs_fsb_to_db(struct xfs_inode *ip, xfs_fsblock_t fsb) +{ + return (XFS_IS_REALTIME_INODE(ip) ? \ + (xfs_daddr_t)XFS_FSB_TO_BB((ip)->i_mount, (fsb)) : \ + XFS_FSB_TO_DADDR((ip)->i_mount, (fsb))); +} + +/* + * Routine to be called at transaction's end by xfs_bmapi, xfs_bunmapi + * caller. Frees all the extents that need freeing, which must be done + * last due to locking considerations. We never free any extents in + * the first transaction. + * + * Return 1 if the given transaction was committed and a new one + * started, and 0 otherwise in the committed parameter. + */ +int /* error */ +xfs_bmap_finish( + xfs_trans_t **tp, /* transaction pointer addr */ + xfs_bmap_free_t *flist, /* i/o: list extents to free */ + int *committed) /* xact committed or not */ +{ + xfs_efd_log_item_t *efd; /* extent free data */ + xfs_efi_log_item_t *efi; /* extent free intention */ + int error; /* error return value */ + xfs_bmap_free_item_t *free; /* free extent item */ + struct xfs_trans_res tres; /* new log reservation */ + xfs_mount_t *mp; /* filesystem mount structure */ + xfs_bmap_free_item_t *next; /* next item on free list */ + xfs_trans_t *ntp; /* new transaction pointer */ + + ASSERT((*tp)->t_flags & XFS_TRANS_PERM_LOG_RES); + if (flist->xbf_count == 0) { + *committed = 0; + return 0; + } + ntp = *tp; + efi = xfs_trans_get_efi(ntp, flist->xbf_count); + for (free = flist->xbf_first; free; free = free->xbfi_next) + xfs_trans_log_efi_extent(ntp, efi, free->xbfi_startblock, + free->xbfi_blockcount); + + tres.tr_logres = ntp->t_log_res; + tres.tr_logcount = ntp->t_log_count; + tres.tr_logflags = XFS_TRANS_PERM_LOG_RES; + ntp = xfs_trans_dup(*tp); + error = xfs_trans_commit(*tp, 0); + *tp = ntp; + *committed = 1; + /* + * We have a new transaction, so we should return committed=1, + * even though we're returning an error. + */ + if (error) + return error; + + /* + * transaction commit worked ok so we can drop the extra ticket + * reference that we gained in xfs_trans_dup() + */ + xfs_log_ticket_put(ntp->t_ticket); + + error = xfs_trans_reserve(ntp, &tres, 0, 0); + if (error) + return error; + efd = xfs_trans_get_efd(ntp, efi, flist->xbf_count); + for (free = flist->xbf_first; free != NULL; free = next) { + next = free->xbfi_next; + if ((error = xfs_free_extent(ntp, free->xbfi_startblock, + free->xbfi_blockcount))) { + /* + * The bmap free list will be cleaned up at a + * higher level. The EFI will be canceled when + * this transaction is aborted. + * Need to force shutdown here to make sure it + * happens, since this transaction may not be + * dirty yet. + */ + mp = ntp->t_mountp; + if (!XFS_FORCED_SHUTDOWN(mp)) + xfs_force_shutdown(mp, + (error == EFSCORRUPTED) ? + SHUTDOWN_CORRUPT_INCORE : + SHUTDOWN_META_IO_ERROR); + return error; + } + xfs_trans_log_efd_extent(ntp, efd, free->xbfi_startblock, + free->xbfi_blockcount); + xfs_bmap_del_free(flist, NULL, free); + } + return 0; +} + +int +xfs_bmap_rtalloc( + struct xfs_bmalloca *ap) /* bmap alloc argument struct */ +{ + xfs_alloctype_t atype = 0; /* type for allocation routines */ + int error; /* error return value */ + xfs_mount_t *mp; /* mount point structure */ + xfs_extlen_t prod = 0; /* product factor for allocators */ + xfs_extlen_t ralen = 0; /* realtime allocation length */ + xfs_extlen_t align; /* minimum allocation alignment */ + xfs_rtblock_t rtb; + + mp = ap->ip->i_mount; + align = xfs_get_extsz_hint(ap->ip); + prod = align / mp->m_sb.sb_rextsize; + error = xfs_bmap_extsize_align(mp, &ap->got, &ap->prev, + align, 1, ap->eof, 0, + ap->conv, &ap->offset, &ap->length); + if (error) + return error; + ASSERT(ap->length); + ASSERT(ap->length % mp->m_sb.sb_rextsize == 0); + + /* + * If the offset & length are not perfectly aligned + * then kill prod, it will just get us in trouble. + */ + if (do_mod(ap->offset, align) || ap->length % align) + prod = 1; + /* + * Set ralen to be the actual requested length in rtextents. + */ + ralen = ap->length / mp->m_sb.sb_rextsize; + /* + * If the old value was close enough to MAXEXTLEN that + * we rounded up to it, cut it back so it's valid again. + * Note that if it's a really large request (bigger than + * MAXEXTLEN), we don't hear about that number, and can't + * adjust the starting point to match it. + */ + if (ralen * mp->m_sb.sb_rextsize >= MAXEXTLEN) + ralen = MAXEXTLEN / mp->m_sb.sb_rextsize; + + /* + * Lock out other modifications to the RT bitmap inode. + */ + xfs_ilock(mp->m_rbmip, XFS_ILOCK_EXCL); + xfs_trans_ijoin(ap->tp, mp->m_rbmip, XFS_ILOCK_EXCL); + + /* + * If it's an allocation to an empty file at offset 0, + * pick an extent that will space things out in the rt area. + */ + if (ap->eof && ap->offset == 0) { + xfs_rtblock_t uninitialized_var(rtx); /* realtime extent no */ + + error = xfs_rtpick_extent(mp, ap->tp, ralen, &rtx); + if (error) + return error; + ap->blkno = rtx * mp->m_sb.sb_rextsize; + } else { + ap->blkno = 0; + } + + xfs_bmap_adjacent(ap); + + /* + * Realtime allocation, done through xfs_rtallocate_extent. + */ + atype = ap->blkno == 0 ? XFS_ALLOCTYPE_ANY_AG : XFS_ALLOCTYPE_NEAR_BNO; + do_div(ap->blkno, mp->m_sb.sb_rextsize); + rtb = ap->blkno; + ap->length = ralen; + if ((error = xfs_rtallocate_extent(ap->tp, ap->blkno, 1, ap->length, + &ralen, atype, ap->wasdel, prod, &rtb))) + return error; + if (rtb == NULLFSBLOCK && prod > 1 && + (error = xfs_rtallocate_extent(ap->tp, ap->blkno, 1, + ap->length, &ralen, atype, + ap->wasdel, 1, &rtb))) + return error; + ap->blkno = rtb; + if (ap->blkno != NULLFSBLOCK) { + ap->blkno *= mp->m_sb.sb_rextsize; + ralen *= mp->m_sb.sb_rextsize; + ap->length = ralen; + ap->ip->i_d.di_nblocks += ralen; + xfs_trans_log_inode(ap->tp, ap->ip, XFS_ILOG_CORE); + if (ap->wasdel) + ap->ip->i_delayed_blks -= ralen; + /* + * Adjust the disk quota also. This was reserved + * earlier. + */ + xfs_trans_mod_dquot_byino(ap->tp, ap->ip, + ap->wasdel ? XFS_TRANS_DQ_DELRTBCOUNT : + XFS_TRANS_DQ_RTBCOUNT, (long) ralen); + } else { + ap->length = 0; + } + return 0; +} + +/* + * Stack switching interfaces for allocation + */ +static void +xfs_bmapi_allocate_worker( + struct work_struct *work) +{ + struct xfs_bmalloca *args = container_of(work, + struct xfs_bmalloca, work); + unsigned long pflags; + + /* we are in a transaction context here */ + current_set_flags_nested(&pflags, PF_FSTRANS); + + args->result = __xfs_bmapi_allocate(args); + complete(args->done); + + current_restore_flags_nested(&pflags, PF_FSTRANS); +} + +/* + * Some allocation requests often come in with little stack to work on. Push + * them off to a worker thread so there is lots of stack to use. Otherwise just + * call directly to avoid the context switch overhead here. + */ +int +xfs_bmapi_allocate( + struct xfs_bmalloca *args) +{ + DECLARE_COMPLETION_ONSTACK(done); + + if (!args->stack_switch) + return __xfs_bmapi_allocate(args); + + + args->done = &done; + INIT_WORK_ONSTACK(&args->work, xfs_bmapi_allocate_worker); + queue_work(xfs_alloc_wq, &args->work); + wait_for_completion(&done); + return args->result; +} + +/* + * Check if the endoff is outside the last extent. If so the caller will grow + * the allocation to a stripe unit boundary. All offsets are considered outside + * the end of file for an empty fork, so 1 is returned in *eof in that case. + */ +int +xfs_bmap_eof( + struct xfs_inode *ip, + xfs_fileoff_t endoff, + int whichfork, + int *eof) +{ + struct xfs_bmbt_irec rec; + int error; + + error = xfs_bmap_last_extent(NULL, ip, whichfork, &rec, eof); + if (error || *eof) + return error; + + *eof = endoff >= rec.br_startoff + rec.br_blockcount; + return 0; +} + +/* + * Extent tree block counting routines. + */ + +/* + * Count leaf blocks given a range of extent records. + */ +STATIC void +xfs_bmap_count_leaves( + xfs_ifork_t *ifp, + xfs_extnum_t idx, + int numrecs, + int *count) +{ + int b; + + for (b = 0; b < numrecs; b++) { + xfs_bmbt_rec_host_t *frp = xfs_iext_get_ext(ifp, idx + b); + *count += xfs_bmbt_get_blockcount(frp); + } +} + +/* + * Count leaf blocks given a range of extent records originally + * in btree format. + */ +STATIC void +xfs_bmap_disk_count_leaves( + struct xfs_mount *mp, + struct xfs_btree_block *block, + int numrecs, + int *count) +{ + int b; + xfs_bmbt_rec_t *frp; + + for (b = 1; b <= numrecs; b++) { + frp = XFS_BMBT_REC_ADDR(mp, block, b); + *count += xfs_bmbt_disk_get_blockcount(frp); + } +} + +/* + * Recursively walks each level of a btree + * to count total fsblocks in use. + */ +STATIC int /* error */ +xfs_bmap_count_tree( + xfs_mount_t *mp, /* file system mount point */ + xfs_trans_t *tp, /* transaction pointer */ + xfs_ifork_t *ifp, /* inode fork pointer */ + xfs_fsblock_t blockno, /* file system block number */ + int levelin, /* level in btree */ + int *count) /* Count of blocks */ +{ + int error; + xfs_buf_t *bp, *nbp; + int level = levelin; + __be64 *pp; + xfs_fsblock_t bno = blockno; + xfs_fsblock_t nextbno; + struct xfs_btree_block *block, *nextblock; + int numrecs; + + error = xfs_btree_read_bufl(mp, tp, bno, 0, &bp, XFS_BMAP_BTREE_REF, + &xfs_bmbt_buf_ops); + if (error) + return error; + *count += 1; + block = XFS_BUF_TO_BLOCK(bp); + + if (--level) { + /* Not at node above leaves, count this level of nodes */ + nextbno = be64_to_cpu(block->bb_u.l.bb_rightsib); + while (nextbno != NULLFSBLOCK) { + error = xfs_btree_read_bufl(mp, tp, nextbno, 0, &nbp, + XFS_BMAP_BTREE_REF, + &xfs_bmbt_buf_ops); + if (error) + return error; + *count += 1; + nextblock = XFS_BUF_TO_BLOCK(nbp); + nextbno = be64_to_cpu(nextblock->bb_u.l.bb_rightsib); + xfs_trans_brelse(tp, nbp); + } + + /* Dive to the next level */ + pp = XFS_BMBT_PTR_ADDR(mp, block, 1, mp->m_bmap_dmxr[1]); + bno = be64_to_cpu(*pp); + if (unlikely((error = + xfs_bmap_count_tree(mp, tp, ifp, bno, level, count)) < 0)) { + xfs_trans_brelse(tp, bp); + XFS_ERROR_REPORT("xfs_bmap_count_tree(1)", + XFS_ERRLEVEL_LOW, mp); + return XFS_ERROR(EFSCORRUPTED); + } + xfs_trans_brelse(tp, bp); + } else { + /* count all level 1 nodes and their leaves */ + for (;;) { + nextbno = be64_to_cpu(block->bb_u.l.bb_rightsib); + numrecs = be16_to_cpu(block->bb_numrecs); + xfs_bmap_disk_count_leaves(mp, block, numrecs, count); + xfs_trans_brelse(tp, bp); + if (nextbno == NULLFSBLOCK) + break; + bno = nextbno; + error = xfs_btree_read_bufl(mp, tp, bno, 0, &bp, + XFS_BMAP_BTREE_REF, + &xfs_bmbt_buf_ops); + if (error) + return error; + *count += 1; + block = XFS_BUF_TO_BLOCK(bp); + } + } + return 0; +} + +/* + * Count fsblocks of the given fork. + */ +int /* error */ +xfs_bmap_count_blocks( + xfs_trans_t *tp, /* transaction pointer */ + xfs_inode_t *ip, /* incore inode */ + int whichfork, /* data or attr fork */ + int *count) /* out: count of blocks */ +{ + struct xfs_btree_block *block; /* current btree block */ + xfs_fsblock_t bno; /* block # of "block" */ + xfs_ifork_t *ifp; /* fork structure */ + int level; /* btree level, for checking */ + xfs_mount_t *mp; /* file system mount structure */ + __be64 *pp; /* pointer to block address */ + + bno = NULLFSBLOCK; + mp = ip->i_mount; + ifp = XFS_IFORK_PTR(ip, whichfork); + if ( XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_EXTENTS ) { + xfs_bmap_count_leaves(ifp, 0, + ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t), + count); + return 0; + } + + /* + * Root level must use BMAP_BROOT_PTR_ADDR macro to get ptr out. + */ + block = ifp->if_broot; + level = be16_to_cpu(block->bb_level); + ASSERT(level > 0); + pp = XFS_BMAP_BROOT_PTR_ADDR(mp, block, 1, ifp->if_broot_bytes); + bno = be64_to_cpu(*pp); + ASSERT(bno != NULLDFSBNO); + ASSERT(XFS_FSB_TO_AGNO(mp, bno) < mp->m_sb.sb_agcount); + ASSERT(XFS_FSB_TO_AGBNO(mp, bno) < mp->m_sb.sb_agblocks); + + if (unlikely(xfs_bmap_count_tree(mp, tp, ifp, bno, level, count) < 0)) { + XFS_ERROR_REPORT("xfs_bmap_count_blocks(2)", XFS_ERRLEVEL_LOW, + mp); + return XFS_ERROR(EFSCORRUPTED); + } + + return 0; +} + +/* + * returns 1 for success, 0 if we failed to map the extent. + */ +STATIC int +xfs_getbmapx_fix_eof_hole( + xfs_inode_t *ip, /* xfs incore inode pointer */ + struct getbmapx *out, /* output structure */ + int prealloced, /* this is a file with + * preallocated data space */ + __int64_t end, /* last block requested */ + xfs_fsblock_t startblock) +{ + __int64_t fixlen; + xfs_mount_t *mp; /* file system mount point */ + xfs_ifork_t *ifp; /* inode fork pointer */ + xfs_extnum_t lastx; /* last extent pointer */ + xfs_fileoff_t fileblock; + + if (startblock == HOLESTARTBLOCK) { + mp = ip->i_mount; + out->bmv_block = -1; + fixlen = XFS_FSB_TO_BB(mp, XFS_B_TO_FSB(mp, XFS_ISIZE(ip))); + fixlen -= out->bmv_offset; + if (prealloced && out->bmv_offset + out->bmv_length == end) { + /* Came to hole at EOF. Trim it. */ + if (fixlen <= 0) + return 0; + out->bmv_length = fixlen; + } + } else { + if (startblock == DELAYSTARTBLOCK) + out->bmv_block = -2; + else + out->bmv_block = xfs_fsb_to_db(ip, startblock); + fileblock = XFS_BB_TO_FSB(ip->i_mount, out->bmv_offset); + ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK); + if (xfs_iext_bno_to_ext(ifp, fileblock, &lastx) && + (lastx == (ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t))-1)) + out->bmv_oflags |= BMV_OF_LAST; + } + + return 1; +} + +/* + * Get inode's extents as described in bmv, and format for output. + * Calls formatter to fill the user's buffer until all extents + * are mapped, until the passed-in bmv->bmv_count slots have + * been filled, or until the formatter short-circuits the loop, + * if it is tracking filled-in extents on its own. + */ +int /* error code */ +xfs_getbmap( + xfs_inode_t *ip, + struct getbmapx *bmv, /* user bmap structure */ + xfs_bmap_format_t formatter, /* format to user */ + void *arg) /* formatter arg */ +{ + __int64_t bmvend; /* last block requested */ + int error = 0; /* return value */ + __int64_t fixlen; /* length for -1 case */ + int i; /* extent number */ + int lock; /* lock state */ + xfs_bmbt_irec_t *map; /* buffer for user's data */ + xfs_mount_t *mp; /* file system mount point */ + int nex; /* # of user extents can do */ + int nexleft; /* # of user extents left */ + int subnex; /* # of bmapi's can do */ + int nmap; /* number of map entries */ + struct getbmapx *out; /* output structure */ + int whichfork; /* data or attr fork */ + int prealloced; /* this is a file with + * preallocated data space */ + int iflags; /* interface flags */ + int bmapi_flags; /* flags for xfs_bmapi */ + int cur_ext = 0; + + mp = ip->i_mount; + iflags = bmv->bmv_iflags; + whichfork = iflags & BMV_IF_ATTRFORK ? XFS_ATTR_FORK : XFS_DATA_FORK; + + if (whichfork == XFS_ATTR_FORK) { + if (XFS_IFORK_Q(ip)) { + if (ip->i_d.di_aformat != XFS_DINODE_FMT_EXTENTS && + ip->i_d.di_aformat != XFS_DINODE_FMT_BTREE && + ip->i_d.di_aformat != XFS_DINODE_FMT_LOCAL) + return XFS_ERROR(EINVAL); + } else if (unlikely( + ip->i_d.di_aformat != 0 && + ip->i_d.di_aformat != XFS_DINODE_FMT_EXTENTS)) { + XFS_ERROR_REPORT("xfs_getbmap", XFS_ERRLEVEL_LOW, + ip->i_mount); + return XFS_ERROR(EFSCORRUPTED); + } + + prealloced = 0; + fixlen = 1LL << 32; + } else { + if (ip->i_d.di_format != XFS_DINODE_FMT_EXTENTS && + ip->i_d.di_format != XFS_DINODE_FMT_BTREE && + ip->i_d.di_format != XFS_DINODE_FMT_LOCAL) + return XFS_ERROR(EINVAL); + + if (xfs_get_extsz_hint(ip) || + ip->i_d.di_flags & (XFS_DIFLAG_PREALLOC|XFS_DIFLAG_APPEND)){ + prealloced = 1; + fixlen = mp->m_super->s_maxbytes; + } else { + prealloced = 0; + fixlen = XFS_ISIZE(ip); + } + } + + if (bmv->bmv_length == -1) { + fixlen = XFS_FSB_TO_BB(mp, XFS_B_TO_FSB(mp, fixlen)); + bmv->bmv_length = + max_t(__int64_t, fixlen - bmv->bmv_offset, 0); + } else if (bmv->bmv_length == 0) { + bmv->bmv_entries = 0; + return 0; + } else if (bmv->bmv_length < 0) { + return XFS_ERROR(EINVAL); + } + + nex = bmv->bmv_count - 1; + if (nex <= 0) + return XFS_ERROR(EINVAL); + bmvend = bmv->bmv_offset + bmv->bmv_length; + + + if (bmv->bmv_count > ULONG_MAX / sizeof(struct getbmapx)) + return XFS_ERROR(ENOMEM); + out = kmem_zalloc(bmv->bmv_count * sizeof(struct getbmapx), KM_MAYFAIL); + if (!out) { + out = kmem_zalloc_large(bmv->bmv_count * + sizeof(struct getbmapx)); + if (!out) + return XFS_ERROR(ENOMEM); + } + + xfs_ilock(ip, XFS_IOLOCK_SHARED); + if (whichfork == XFS_DATA_FORK && !(iflags & BMV_IF_DELALLOC)) { + if (ip->i_delayed_blks || XFS_ISIZE(ip) > ip->i_d.di_size) { + error = -filemap_write_and_wait(VFS_I(ip)->i_mapping); + if (error) + goto out_unlock_iolock; + } + /* + * even after flushing the inode, there can still be delalloc + * blocks on the inode beyond EOF due to speculative + * preallocation. These are not removed until the release + * function is called or the inode is inactivated. Hence we + * cannot assert here that ip->i_delayed_blks == 0. + */ + } + + lock = xfs_ilock_map_shared(ip); + + /* + * Don't let nex be bigger than the number of extents + * we can have assuming alternating holes and real extents. + */ + if (nex > XFS_IFORK_NEXTENTS(ip, whichfork) * 2 + 1) + nex = XFS_IFORK_NEXTENTS(ip, whichfork) * 2 + 1; + + bmapi_flags = xfs_bmapi_aflag(whichfork); + if (!(iflags & BMV_IF_PREALLOC)) + bmapi_flags |= XFS_BMAPI_IGSTATE; + + /* + * Allocate enough space to handle "subnex" maps at a time. + */ + error = ENOMEM; + subnex = 16; + map = kmem_alloc(subnex * sizeof(*map), KM_MAYFAIL | KM_NOFS); + if (!map) + goto out_unlock_ilock; + + bmv->bmv_entries = 0; + + if (XFS_IFORK_NEXTENTS(ip, whichfork) == 0 && + (whichfork == XFS_ATTR_FORK || !(iflags & BMV_IF_DELALLOC))) { + error = 0; + goto out_free_map; + } + + nexleft = nex; + + do { + nmap = (nexleft > subnex) ? subnex : nexleft; + error = xfs_bmapi_read(ip, XFS_BB_TO_FSBT(mp, bmv->bmv_offset), + XFS_BB_TO_FSB(mp, bmv->bmv_length), + map, &nmap, bmapi_flags); + if (error) + goto out_free_map; + ASSERT(nmap <= subnex); + + for (i = 0; i < nmap && nexleft && bmv->bmv_length; i++) { + out[cur_ext].bmv_oflags = 0; + if (map[i].br_state == XFS_EXT_UNWRITTEN) + out[cur_ext].bmv_oflags |= BMV_OF_PREALLOC; + else if (map[i].br_startblock == DELAYSTARTBLOCK) + out[cur_ext].bmv_oflags |= BMV_OF_DELALLOC; + out[cur_ext].bmv_offset = + XFS_FSB_TO_BB(mp, map[i].br_startoff); + out[cur_ext].bmv_length = + XFS_FSB_TO_BB(mp, map[i].br_blockcount); + out[cur_ext].bmv_unused1 = 0; + out[cur_ext].bmv_unused2 = 0; + + /* + * delayed allocation extents that start beyond EOF can + * occur due to speculative EOF allocation when the + * delalloc extent is larger than the largest freespace + * extent at conversion time. These extents cannot be + * converted by data writeback, so can exist here even + * if we are not supposed to be finding delalloc + * extents. + */ + if (map[i].br_startblock == DELAYSTARTBLOCK && + map[i].br_startoff <= XFS_B_TO_FSB(mp, XFS_ISIZE(ip))) + ASSERT((iflags & BMV_IF_DELALLOC) != 0); + + if (map[i].br_startblock == HOLESTARTBLOCK && + whichfork == XFS_ATTR_FORK) { + /* came to the end of attribute fork */ + out[cur_ext].bmv_oflags |= BMV_OF_LAST; + goto out_free_map; + } + + if (!xfs_getbmapx_fix_eof_hole(ip, &out[cur_ext], + prealloced, bmvend, + map[i].br_startblock)) + goto out_free_map; + + bmv->bmv_offset = + out[cur_ext].bmv_offset + + out[cur_ext].bmv_length; + bmv->bmv_length = + max_t(__int64_t, 0, bmvend - bmv->bmv_offset); + + /* + * In case we don't want to return the hole, + * don't increase cur_ext so that we can reuse + * it in the next loop. + */ + if ((iflags & BMV_IF_NO_HOLES) && + map[i].br_startblock == HOLESTARTBLOCK) { + memset(&out[cur_ext], 0, sizeof(out[cur_ext])); + continue; + } + + nexleft--; + bmv->bmv_entries++; + cur_ext++; + } + } while (nmap && nexleft && bmv->bmv_length); + + out_free_map: + kmem_free(map); + out_unlock_ilock: + xfs_iunlock_map_shared(ip, lock); + out_unlock_iolock: + xfs_iunlock(ip, XFS_IOLOCK_SHARED); + + for (i = 0; i < cur_ext; i++) { + int full = 0; /* user array is full */ + + /* format results & advance arg */ + error = formatter(&arg, &out[i], &full); + if (error || full) + break; + } + + if (is_vmalloc_addr(out)) + kmem_free_large(out); + else + kmem_free(out); + return error; +} + +/* + * dead simple method of punching delalyed allocation blocks from a range in + * the inode. Walks a block at a time so will be slow, but is only executed in + * rare error cases so the overhead is not critical. This will always punch out + * both the start and end blocks, even if the ranges only partially overlap + * them, so it is up to the caller to ensure that partial blocks are not + * passed in. + */ +int +xfs_bmap_punch_delalloc_range( + struct xfs_inode *ip, + xfs_fileoff_t start_fsb, + xfs_fileoff_t length) +{ + xfs_fileoff_t remaining = length; + int error = 0; + + ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); + + do { + int done; + xfs_bmbt_irec_t imap; + int nimaps = 1; + xfs_fsblock_t firstblock; + xfs_bmap_free_t flist; + + /* + * Map the range first and check that it is a delalloc extent + * before trying to unmap the range. Otherwise we will be + * trying to remove a real extent (which requires a + * transaction) or a hole, which is probably a bad idea... + */ + error = xfs_bmapi_read(ip, start_fsb, 1, &imap, &nimaps, + XFS_BMAPI_ENTIRE); + + if (error) { + /* something screwed, just bail */ + if (!XFS_FORCED_SHUTDOWN(ip->i_mount)) { + xfs_alert(ip->i_mount, + "Failed delalloc mapping lookup ino %lld fsb %lld.", + ip->i_ino, start_fsb); + } + break; + } + if (!nimaps) { + /* nothing there */ + goto next_block; + } + if (imap.br_startblock != DELAYSTARTBLOCK) { + /* been converted, ignore */ + goto next_block; + } + WARN_ON(imap.br_blockcount == 0); + + /* + * Note: while we initialise the firstblock/flist pair, they + * should never be used because blocks should never be + * allocated or freed for a delalloc extent and hence we need + * don't cancel or finish them after the xfs_bunmapi() call. + */ + xfs_bmap_init(&flist, &firstblock); + error = xfs_bunmapi(NULL, ip, start_fsb, 1, 0, 1, &firstblock, + &flist, &done); + if (error) + break; + + ASSERT(!flist.xbf_count && !flist.xbf_first); +next_block: + start_fsb++; + remaining--; + } while(remaining > 0); + + return error; +} + +/* + * Test whether it is appropriate to check an inode for and free post EOF + * blocks. The 'force' parameter determines whether we should also consider + * regular files that are marked preallocated or append-only. + */ +bool +xfs_can_free_eofblocks(struct xfs_inode *ip, bool force) +{ + /* prealloc/delalloc exists only on regular files */ + if (!S_ISREG(ip->i_d.di_mode)) + return false; + + /* + * Zero sized files with no cached pages and delalloc blocks will not + * have speculative prealloc/delalloc blocks to remove. + */ + if (VFS_I(ip)->i_size == 0 && + VN_CACHED(VFS_I(ip)) == 0 && + ip->i_delayed_blks == 0) + return false; + + /* If we haven't read in the extent list, then don't do it now. */ + if (!(ip->i_df.if_flags & XFS_IFEXTENTS)) + return false; + + /* + * Do not free real preallocated or append-only files unless the file + * has delalloc blocks and we are forced to remove them. + */ + if (ip->i_d.di_flags & (XFS_DIFLAG_PREALLOC | XFS_DIFLAG_APPEND)) + if (!force || ip->i_delayed_blks == 0) + return false; + + return true; +} + +/* + * This is called by xfs_inactive to free any blocks beyond eof + * when the link count isn't zero and by xfs_dm_punch_hole() when + * punching a hole to EOF. + */ +int +xfs_free_eofblocks( + xfs_mount_t *mp, + xfs_inode_t *ip, + bool need_iolock) +{ + xfs_trans_t *tp; + int error; + xfs_fileoff_t end_fsb; + xfs_fileoff_t last_fsb; + xfs_filblks_t map_len; + int nimaps; + xfs_bmbt_irec_t imap; + + /* + * Figure out if there are any blocks beyond the end + * of the file. If not, then there is nothing to do. + */ + end_fsb = XFS_B_TO_FSB(mp, (xfs_ufsize_t)XFS_ISIZE(ip)); + last_fsb = XFS_B_TO_FSB(mp, mp->m_super->s_maxbytes); + if (last_fsb <= end_fsb) + return 0; + map_len = last_fsb - end_fsb; + + nimaps = 1; + xfs_ilock(ip, XFS_ILOCK_SHARED); + error = xfs_bmapi_read(ip, end_fsb, map_len, &imap, &nimaps, 0); + xfs_iunlock(ip, XFS_ILOCK_SHARED); + + if (!error && (nimaps != 0) && + (imap.br_startblock != HOLESTARTBLOCK || + ip->i_delayed_blks)) { + /* + * Attach the dquots to the inode up front. + */ + error = xfs_qm_dqattach(ip, 0); + if (error) + return error; + + /* + * There are blocks after the end of file. + * Free them up now by truncating the file to + * its current size. + */ + tp = xfs_trans_alloc(mp, XFS_TRANS_INACTIVE); + + if (need_iolock) { + if (!xfs_ilock_nowait(ip, XFS_IOLOCK_EXCL)) { + xfs_trans_cancel(tp, 0); + return EAGAIN; + } + } + + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_itruncate, 0, 0); + if (error) { + ASSERT(XFS_FORCED_SHUTDOWN(mp)); + xfs_trans_cancel(tp, 0); + if (need_iolock) + xfs_iunlock(ip, XFS_IOLOCK_EXCL); + return error; + } + + xfs_ilock(ip, XFS_ILOCK_EXCL); + xfs_trans_ijoin(tp, ip, 0); + + /* + * Do not update the on-disk file size. If we update the + * on-disk file size and then the system crashes before the + * contents of the file are flushed to disk then the files + * may be full of holes (ie NULL files bug). + */ + error = xfs_itruncate_extents(&tp, ip, XFS_DATA_FORK, + XFS_ISIZE(ip)); + if (error) { + /* + * If we get an error at this point we simply don't + * bother truncating the file. + */ + xfs_trans_cancel(tp, + (XFS_TRANS_RELEASE_LOG_RES | + XFS_TRANS_ABORT)); + } else { + error = xfs_trans_commit(tp, + XFS_TRANS_RELEASE_LOG_RES); + if (!error) + xfs_inode_clear_eofblocks_tag(ip); + } + + xfs_iunlock(ip, XFS_ILOCK_EXCL); + if (need_iolock) + xfs_iunlock(ip, XFS_IOLOCK_EXCL); + } + return error; +} + +/* + * xfs_alloc_file_space() + * This routine allocates disk space for the given file. + * + * If alloc_type == 0, this request is for an ALLOCSP type + * request which will change the file size. In this case, no + * DMAPI event will be generated by the call. A TRUNCATE event + * will be generated later by xfs_setattr. + * + * If alloc_type != 0, this request is for a RESVSP type + * request, and a DMAPI DM_EVENT_WRITE will be generated if the + * lower block boundary byte address is less than the file's + * length. + * + * RETURNS: + * 0 on success + * errno on error + * + */ +STATIC int +xfs_alloc_file_space( + xfs_inode_t *ip, + xfs_off_t offset, + xfs_off_t len, + int alloc_type, + int attr_flags) +{ + xfs_mount_t *mp = ip->i_mount; + xfs_off_t count; + xfs_filblks_t allocated_fsb; + xfs_filblks_t allocatesize_fsb; + xfs_extlen_t extsz, temp; + xfs_fileoff_t startoffset_fsb; + xfs_fsblock_t firstfsb; + int nimaps; + int quota_flag; + int rt; + xfs_trans_t *tp; + xfs_bmbt_irec_t imaps[1], *imapp; + xfs_bmap_free_t free_list; + uint qblocks, resblks, resrtextents; + int committed; + int error; + + trace_xfs_alloc_file_space(ip); + + if (XFS_FORCED_SHUTDOWN(mp)) + return XFS_ERROR(EIO); + + error = xfs_qm_dqattach(ip, 0); + if (error) + return error; + + if (len <= 0) + return XFS_ERROR(EINVAL); + + rt = XFS_IS_REALTIME_INODE(ip); + extsz = xfs_get_extsz_hint(ip); + + count = len; + imapp = &imaps[0]; + nimaps = 1; + startoffset_fsb = XFS_B_TO_FSBT(mp, offset); + allocatesize_fsb = XFS_B_TO_FSB(mp, count); + + /* + * Allocate file space until done or until there is an error + */ + while (allocatesize_fsb && !error) { + xfs_fileoff_t s, e; + + /* + * Determine space reservations for data/realtime. + */ + if (unlikely(extsz)) { + s = startoffset_fsb; + do_div(s, extsz); + s *= extsz; + e = startoffset_fsb + allocatesize_fsb; + if ((temp = do_mod(startoffset_fsb, extsz))) + e += temp; + if ((temp = do_mod(e, extsz))) + e += extsz - temp; + } else { + s = 0; + e = allocatesize_fsb; + } + + /* + * The transaction reservation is limited to a 32-bit block + * count, hence we need to limit the number of blocks we are + * trying to reserve to avoid an overflow. We can't allocate + * more than @nimaps extents, and an extent is limited on disk + * to MAXEXTLEN (21 bits), so use that to enforce the limit. + */ + resblks = min_t(xfs_fileoff_t, (e - s), (MAXEXTLEN * nimaps)); + if (unlikely(rt)) { + resrtextents = qblocks = resblks; + resrtextents /= mp->m_sb.sb_rextsize; + resblks = XFS_DIOSTRAT_SPACE_RES(mp, 0); + quota_flag = XFS_QMOPT_RES_RTBLKS; + } else { + resrtextents = 0; + resblks = qblocks = XFS_DIOSTRAT_SPACE_RES(mp, resblks); + quota_flag = XFS_QMOPT_RES_REGBLKS; + } + + /* + * Allocate and setup the transaction. + */ + tp = xfs_trans_alloc(mp, XFS_TRANS_DIOSTRAT); + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_write, + resblks, resrtextents); + /* + * Check for running out of space + */ + if (error) { + /* + * Free the transaction structure. + */ + ASSERT(error == ENOSPC || XFS_FORCED_SHUTDOWN(mp)); + xfs_trans_cancel(tp, 0); + break; + } + xfs_ilock(ip, XFS_ILOCK_EXCL); + error = xfs_trans_reserve_quota_nblks(tp, ip, qblocks, + 0, quota_flag); + if (error) + goto error1; + + xfs_trans_ijoin(tp, ip, 0); + + xfs_bmap_init(&free_list, &firstfsb); + error = xfs_bmapi_write(tp, ip, startoffset_fsb, + allocatesize_fsb, alloc_type, &firstfsb, + 0, imapp, &nimaps, &free_list); + if (error) { + goto error0; + } + + /* + * Complete the transaction + */ + error = xfs_bmap_finish(&tp, &free_list, &committed); + if (error) { + goto error0; + } + + error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES); + xfs_iunlock(ip, XFS_ILOCK_EXCL); + if (error) { + break; + } + + allocated_fsb = imapp->br_blockcount; + + if (nimaps == 0) { + error = XFS_ERROR(ENOSPC); + break; + } + + startoffset_fsb += allocated_fsb; + allocatesize_fsb -= allocated_fsb; + } + + return error; + +error0: /* Cancel bmap, unlock inode, unreserve quota blocks, cancel trans */ + xfs_bmap_cancel(&free_list); + xfs_trans_unreserve_quota_nblks(tp, ip, (long)qblocks, 0, quota_flag); + +error1: /* Just cancel transaction */ + xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES | XFS_TRANS_ABORT); + xfs_iunlock(ip, XFS_ILOCK_EXCL); + return error; +} + +/* + * Zero file bytes between startoff and endoff inclusive. + * The iolock is held exclusive and no blocks are buffered. + * + * This function is used by xfs_free_file_space() to zero + * partial blocks when the range to free is not block aligned. + * When unreserving space with boundaries that are not block + * aligned we round up the start and round down the end + * boundaries and then use this function to zero the parts of + * the blocks that got dropped during the rounding. + */ +STATIC int +xfs_zero_remaining_bytes( + xfs_inode_t *ip, + xfs_off_t startoff, + xfs_off_t endoff) +{ + xfs_bmbt_irec_t imap; + xfs_fileoff_t offset_fsb; + xfs_off_t lastoffset; + xfs_off_t offset; + xfs_buf_t *bp; + xfs_mount_t *mp = ip->i_mount; + int nimap; + int error = 0; + + /* + * Avoid doing I/O beyond eof - it's not necessary + * since nothing can read beyond eof. The space will + * be zeroed when the file is extended anyway. + */ + if (startoff >= XFS_ISIZE(ip)) + return 0; + + if (endoff > XFS_ISIZE(ip)) + endoff = XFS_ISIZE(ip); + + bp = xfs_buf_get_uncached(XFS_IS_REALTIME_INODE(ip) ? + mp->m_rtdev_targp : mp->m_ddev_targp, + BTOBB(mp->m_sb.sb_blocksize), 0); + if (!bp) + return XFS_ERROR(ENOMEM); + + xfs_buf_unlock(bp); + + for (offset = startoff; offset <= endoff; offset = lastoffset + 1) { + offset_fsb = XFS_B_TO_FSBT(mp, offset); + nimap = 1; + error = xfs_bmapi_read(ip, offset_fsb, 1, &imap, &nimap, 0); + if (error || nimap < 1) + break; + ASSERT(imap.br_blockcount >= 1); + ASSERT(imap.br_startoff == offset_fsb); + lastoffset = XFS_FSB_TO_B(mp, imap.br_startoff + 1) - 1; + if (lastoffset > endoff) + lastoffset = endoff; + if (imap.br_startblock == HOLESTARTBLOCK) + continue; + ASSERT(imap.br_startblock != DELAYSTARTBLOCK); + if (imap.br_state == XFS_EXT_UNWRITTEN) + continue; + XFS_BUF_UNDONE(bp); + XFS_BUF_UNWRITE(bp); + XFS_BUF_READ(bp); + XFS_BUF_SET_ADDR(bp, xfs_fsb_to_db(ip, imap.br_startblock)); + xfsbdstrat(mp, bp); + error = xfs_buf_iowait(bp); + if (error) { + xfs_buf_ioerror_alert(bp, + "xfs_zero_remaining_bytes(read)"); + break; + } + memset(bp->b_addr + + (offset - XFS_FSB_TO_B(mp, imap.br_startoff)), + 0, lastoffset - offset + 1); + XFS_BUF_UNDONE(bp); + XFS_BUF_UNREAD(bp); + XFS_BUF_WRITE(bp); + xfsbdstrat(mp, bp); + error = xfs_buf_iowait(bp); + if (error) { + xfs_buf_ioerror_alert(bp, + "xfs_zero_remaining_bytes(write)"); + break; + } + } + xfs_buf_free(bp); + return error; +} + +/* + * xfs_free_file_space() + * This routine frees disk space for the given file. + * + * This routine is only called by xfs_change_file_space + * for an UNRESVSP type call. + * + * RETURNS: + * 0 on success + * errno on error + * + */ +STATIC int +xfs_free_file_space( + xfs_inode_t *ip, + xfs_off_t offset, + xfs_off_t len, + int attr_flags) +{ + int committed; + int done; + xfs_fileoff_t endoffset_fsb; + int error; + xfs_fsblock_t firstfsb; + xfs_bmap_free_t free_list; + xfs_bmbt_irec_t imap; + xfs_off_t ioffset; + xfs_extlen_t mod=0; + xfs_mount_t *mp; + int nimap; + uint resblks; + xfs_off_t rounding; + int rt; + xfs_fileoff_t startoffset_fsb; + xfs_trans_t *tp; + int need_iolock = 1; + + mp = ip->i_mount; + + trace_xfs_free_file_space(ip); + + error = xfs_qm_dqattach(ip, 0); + if (error) + return error; + + error = 0; + if (len <= 0) /* if nothing being freed */ + return error; + rt = XFS_IS_REALTIME_INODE(ip); + startoffset_fsb = XFS_B_TO_FSB(mp, offset); + endoffset_fsb = XFS_B_TO_FSBT(mp, offset + len); + + if (attr_flags & XFS_ATTR_NOLOCK) + need_iolock = 0; + if (need_iolock) { + xfs_ilock(ip, XFS_IOLOCK_EXCL); + /* wait for the completion of any pending DIOs */ + inode_dio_wait(VFS_I(ip)); + } + + rounding = max_t(xfs_off_t, 1 << mp->m_sb.sb_blocklog, PAGE_CACHE_SIZE); + ioffset = offset & ~(rounding - 1); + error = -filemap_write_and_wait_range(VFS_I(ip)->i_mapping, + ioffset, -1); + if (error) + goto out_unlock_iolock; + truncate_pagecache_range(VFS_I(ip), ioffset, -1); + + /* + * Need to zero the stuff we're not freeing, on disk. + * If it's a realtime file & can't use unwritten extents then we + * actually need to zero the extent edges. Otherwise xfs_bunmapi + * will take care of it for us. + */ + if (rt && !xfs_sb_version_hasextflgbit(&mp->m_sb)) { + nimap = 1; + error = xfs_bmapi_read(ip, startoffset_fsb, 1, + &imap, &nimap, 0); + if (error) + goto out_unlock_iolock; + ASSERT(nimap == 0 || nimap == 1); + if (nimap && imap.br_startblock != HOLESTARTBLOCK) { + xfs_daddr_t block; + + ASSERT(imap.br_startblock != DELAYSTARTBLOCK); + block = imap.br_startblock; + mod = do_div(block, mp->m_sb.sb_rextsize); + if (mod) + startoffset_fsb += mp->m_sb.sb_rextsize - mod; + } + nimap = 1; + error = xfs_bmapi_read(ip, endoffset_fsb - 1, 1, + &imap, &nimap, 0); + if (error) + goto out_unlock_iolock; + ASSERT(nimap == 0 || nimap == 1); + if (nimap && imap.br_startblock != HOLESTARTBLOCK) { + ASSERT(imap.br_startblock != DELAYSTARTBLOCK); + mod++; + if (mod && (mod != mp->m_sb.sb_rextsize)) + endoffset_fsb -= mod; + } + } + if ((done = (endoffset_fsb <= startoffset_fsb))) + /* + * One contiguous piece to clear + */ + error = xfs_zero_remaining_bytes(ip, offset, offset + len - 1); + else { + /* + * Some full blocks, possibly two pieces to clear + */ + if (offset < XFS_FSB_TO_B(mp, startoffset_fsb)) + error = xfs_zero_remaining_bytes(ip, offset, + XFS_FSB_TO_B(mp, startoffset_fsb) - 1); + if (!error && + XFS_FSB_TO_B(mp, endoffset_fsb) < offset + len) + error = xfs_zero_remaining_bytes(ip, + XFS_FSB_TO_B(mp, endoffset_fsb), + offset + len - 1); + } + + /* + * free file space until done or until there is an error + */ + resblks = XFS_DIOSTRAT_SPACE_RES(mp, 0); + while (!error && !done) { + + /* + * allocate and setup the transaction. Allow this + * transaction to dip into the reserve blocks to ensure + * the freeing of the space succeeds at ENOSPC. + */ + tp = xfs_trans_alloc(mp, XFS_TRANS_DIOSTRAT); + tp->t_flags |= XFS_TRANS_RESERVE; + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_write, resblks, 0); + + /* + * check for running out of space + */ + if (error) { + /* + * Free the transaction structure. + */ + ASSERT(error == ENOSPC || XFS_FORCED_SHUTDOWN(mp)); + xfs_trans_cancel(tp, 0); + break; + } + xfs_ilock(ip, XFS_ILOCK_EXCL); + error = xfs_trans_reserve_quota(tp, mp, + ip->i_udquot, ip->i_gdquot, ip->i_pdquot, + resblks, 0, XFS_QMOPT_RES_REGBLKS); + if (error) + goto error1; + + xfs_trans_ijoin(tp, ip, 0); + + /* + * issue the bunmapi() call to free the blocks + */ + xfs_bmap_init(&free_list, &firstfsb); + error = xfs_bunmapi(tp, ip, startoffset_fsb, + endoffset_fsb - startoffset_fsb, + 0, 2, &firstfsb, &free_list, &done); + if (error) { + goto error0; + } + + /* + * complete the transaction + */ + error = xfs_bmap_finish(&tp, &free_list, &committed); + if (error) { + goto error0; + } + + error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES); + xfs_iunlock(ip, XFS_ILOCK_EXCL); + } + + out_unlock_iolock: + if (need_iolock) + xfs_iunlock(ip, XFS_IOLOCK_EXCL); + return error; + + error0: + xfs_bmap_cancel(&free_list); + error1: + xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES | XFS_TRANS_ABORT); + xfs_iunlock(ip, need_iolock ? (XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL) : + XFS_ILOCK_EXCL); + return error; +} + + +STATIC int +xfs_zero_file_space( + struct xfs_inode *ip, + xfs_off_t offset, + xfs_off_t len, + int attr_flags) +{ + struct xfs_mount *mp = ip->i_mount; + uint granularity; + xfs_off_t start_boundary; + xfs_off_t end_boundary; + int error; + + granularity = max_t(uint, 1 << mp->m_sb.sb_blocklog, PAGE_CACHE_SIZE); + + /* + * Round the range of extents we are going to convert inwards. If the + * offset is aligned, then it doesn't get changed so we zero from the + * start of the block offset points to. + */ + start_boundary = round_up(offset, granularity); + end_boundary = round_down(offset + len, granularity); + + ASSERT(start_boundary >= offset); + ASSERT(end_boundary <= offset + len); + + if (!(attr_flags & XFS_ATTR_NOLOCK)) + xfs_ilock(ip, XFS_IOLOCK_EXCL); + + if (start_boundary < end_boundary - 1) { + /* punch out the page cache over the conversion range */ + truncate_pagecache_range(VFS_I(ip), start_boundary, + end_boundary - 1); + /* convert the blocks */ + error = xfs_alloc_file_space(ip, start_boundary, + end_boundary - start_boundary - 1, + XFS_BMAPI_PREALLOC | XFS_BMAPI_CONVERT, + attr_flags); + if (error) + goto out_unlock; + + /* We've handled the interior of the range, now for the edges */ + if (start_boundary != offset) + error = xfs_iozero(ip, offset, start_boundary - offset); + if (error) + goto out_unlock; + + if (end_boundary != offset + len) + error = xfs_iozero(ip, end_boundary, + offset + len - end_boundary); + + } else { + /* + * It's either a sub-granularity range or the range spanned lies + * partially across two adjacent blocks. + */ + error = xfs_iozero(ip, offset, len); + } + +out_unlock: + if (!(attr_flags & XFS_ATTR_NOLOCK)) + xfs_iunlock(ip, XFS_IOLOCK_EXCL); + return error; + +} + +/* + * xfs_change_file_space() + * This routine allocates or frees disk space for the given file. + * The user specified parameters are checked for alignment and size + * limitations. + * + * RETURNS: + * 0 on success + * errno on error + * + */ +int +xfs_change_file_space( + xfs_inode_t *ip, + int cmd, + xfs_flock64_t *bf, + xfs_off_t offset, + int attr_flags) +{ + xfs_mount_t *mp = ip->i_mount; + int clrprealloc; + int error; + xfs_fsize_t fsize; + int setprealloc; + xfs_off_t startoffset; + xfs_trans_t *tp; + struct iattr iattr; + + if (!S_ISREG(ip->i_d.di_mode)) + return XFS_ERROR(EINVAL); + + switch (bf->l_whence) { + case 0: /*SEEK_SET*/ + break; + case 1: /*SEEK_CUR*/ + bf->l_start += offset; + break; + case 2: /*SEEK_END*/ + bf->l_start += XFS_ISIZE(ip); + break; + default: + return XFS_ERROR(EINVAL); + } + + /* + * length of <= 0 for resv/unresv/zero is invalid. length for + * alloc/free is ignored completely and we have no idea what userspace + * might have set it to, so set it to zero to allow range + * checks to pass. + */ + switch (cmd) { + case XFS_IOC_ZERO_RANGE: + case XFS_IOC_RESVSP: + case XFS_IOC_RESVSP64: + case XFS_IOC_UNRESVSP: + case XFS_IOC_UNRESVSP64: + if (bf->l_len <= 0) + return XFS_ERROR(EINVAL); + break; + default: + bf->l_len = 0; + break; + } + + if (bf->l_start < 0 || + bf->l_start > mp->m_super->s_maxbytes || + bf->l_start + bf->l_len < 0 || + bf->l_start + bf->l_len >= mp->m_super->s_maxbytes) + return XFS_ERROR(EINVAL); + + bf->l_whence = 0; + + startoffset = bf->l_start; + fsize = XFS_ISIZE(ip); + + setprealloc = clrprealloc = 0; + switch (cmd) { + case XFS_IOC_ZERO_RANGE: + error = xfs_zero_file_space(ip, startoffset, bf->l_len, + attr_flags); + if (error) + return error; + setprealloc = 1; + break; + + case XFS_IOC_RESVSP: + case XFS_IOC_RESVSP64: + error = xfs_alloc_file_space(ip, startoffset, bf->l_len, + XFS_BMAPI_PREALLOC, attr_flags); + if (error) + return error; + setprealloc = 1; + break; + + case XFS_IOC_UNRESVSP: + case XFS_IOC_UNRESVSP64: + if ((error = xfs_free_file_space(ip, startoffset, bf->l_len, + attr_flags))) + return error; + break; + + case XFS_IOC_ALLOCSP: + case XFS_IOC_ALLOCSP64: + case XFS_IOC_FREESP: + case XFS_IOC_FREESP64: + /* + * These operations actually do IO when extending the file, but + * the allocation is done seperately to the zeroing that is + * done. This set of operations need to be serialised against + * other IO operations, such as truncate and buffered IO. We + * need to take the IOLOCK here to serialise the allocation and + * zeroing IO to prevent other IOLOCK holders (e.g. getbmap, + * truncate, direct IO) from racing against the transient + * allocated but not written state we can have here. + */ + xfs_ilock(ip, XFS_IOLOCK_EXCL); + if (startoffset > fsize) { + error = xfs_alloc_file_space(ip, fsize, + startoffset - fsize, 0, + attr_flags | XFS_ATTR_NOLOCK); + if (error) { + xfs_iunlock(ip, XFS_IOLOCK_EXCL); + break; + } + } + + iattr.ia_valid = ATTR_SIZE; + iattr.ia_size = startoffset; + + error = xfs_setattr_size(ip, &iattr, + attr_flags | XFS_ATTR_NOLOCK); + xfs_iunlock(ip, XFS_IOLOCK_EXCL); + + if (error) + return error; + + clrprealloc = 1; + break; + + default: + ASSERT(0); + return XFS_ERROR(EINVAL); + } + + /* + * update the inode timestamp, mode, and prealloc flag bits + */ + tp = xfs_trans_alloc(mp, XFS_TRANS_WRITEID); + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_writeid, 0, 0); + if (error) { + xfs_trans_cancel(tp, 0); + return error; + } + + xfs_ilock(ip, XFS_ILOCK_EXCL); + xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); + + if ((attr_flags & XFS_ATTR_DMI) == 0) { + ip->i_d.di_mode &= ~S_ISUID; + + /* + * Note that we don't have to worry about mandatory + * file locking being disabled here because we only + * clear the S_ISGID bit if the Group execute bit is + * on, but if it was on then mandatory locking wouldn't + * have been enabled. + */ + if (ip->i_d.di_mode & S_IXGRP) + ip->i_d.di_mode &= ~S_ISGID; + + xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG); + } + if (setprealloc) + ip->i_d.di_flags |= XFS_DIFLAG_PREALLOC; + else if (clrprealloc) + ip->i_d.di_flags &= ~XFS_DIFLAG_PREALLOC; + + xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); + if (attr_flags & XFS_ATTR_SYNC) + xfs_trans_set_sync(tp); + return xfs_trans_commit(tp, 0); +} + +/* + * We need to check that the format of the data fork in the temporary inode is + * valid for the target inode before doing the swap. This is not a problem with + * attr1 because of the fixed fork offset, but attr2 has a dynamically sized + * data fork depending on the space the attribute fork is taking so we can get + * invalid formats on the target inode. + * + * E.g. target has space for 7 extents in extent format, temp inode only has + * space for 6. If we defragment down to 7 extents, then the tmp format is a + * btree, but when swapped it needs to be in extent format. Hence we can't just + * blindly swap data forks on attr2 filesystems. + * + * Note that we check the swap in both directions so that we don't end up with + * a corrupt temporary inode, either. + * + * Note that fixing the way xfs_fsr sets up the attribute fork in the source + * inode will prevent this situation from occurring, so all we do here is + * reject and log the attempt. basically we are putting the responsibility on + * userspace to get this right. + */ +static int +xfs_swap_extents_check_format( + xfs_inode_t *ip, /* target inode */ + xfs_inode_t *tip) /* tmp inode */ +{ + + /* Should never get a local format */ + if (ip->i_d.di_format == XFS_DINODE_FMT_LOCAL || + tip->i_d.di_format == XFS_DINODE_FMT_LOCAL) + return EINVAL; + + /* + * if the target inode has less extents that then temporary inode then + * why did userspace call us? + */ + if (ip->i_d.di_nextents < tip->i_d.di_nextents) + return EINVAL; + + /* + * if the target inode is in extent form and the temp inode is in btree + * form then we will end up with the target inode in the wrong format + * as we already know there are less extents in the temp inode. + */ + if (ip->i_d.di_format == XFS_DINODE_FMT_EXTENTS && + tip->i_d.di_format == XFS_DINODE_FMT_BTREE) + return EINVAL; + + /* Check temp in extent form to max in target */ + if (tip->i_d.di_format == XFS_DINODE_FMT_EXTENTS && + XFS_IFORK_NEXTENTS(tip, XFS_DATA_FORK) > + XFS_IFORK_MAXEXT(ip, XFS_DATA_FORK)) + return EINVAL; + + /* Check target in extent form to max in temp */ + if (ip->i_d.di_format == XFS_DINODE_FMT_EXTENTS && + XFS_IFORK_NEXTENTS(ip, XFS_DATA_FORK) > + XFS_IFORK_MAXEXT(tip, XFS_DATA_FORK)) + return EINVAL; + + /* + * If we are in a btree format, check that the temp root block will fit + * in the target and that it has enough extents to be in btree format + * in the target. + * + * Note that we have to be careful to allow btree->extent conversions + * (a common defrag case) which will occur when the temp inode is in + * extent format... + */ + if (tip->i_d.di_format == XFS_DINODE_FMT_BTREE) { + if (XFS_IFORK_BOFF(ip) && + XFS_BMAP_BMDR_SPACE(tip->i_df.if_broot) > XFS_IFORK_BOFF(ip)) + return EINVAL; + if (XFS_IFORK_NEXTENTS(tip, XFS_DATA_FORK) <= + XFS_IFORK_MAXEXT(ip, XFS_DATA_FORK)) + return EINVAL; + } + + /* Reciprocal target->temp btree format checks */ + if (ip->i_d.di_format == XFS_DINODE_FMT_BTREE) { + if (XFS_IFORK_BOFF(tip) && + XFS_BMAP_BMDR_SPACE(ip->i_df.if_broot) > XFS_IFORK_BOFF(tip)) + return EINVAL; + if (XFS_IFORK_NEXTENTS(ip, XFS_DATA_FORK) <= + XFS_IFORK_MAXEXT(tip, XFS_DATA_FORK)) + return EINVAL; + } + + return 0; +} + +int +xfs_swap_extents( + xfs_inode_t *ip, /* target inode */ + xfs_inode_t *tip, /* tmp inode */ + xfs_swapext_t *sxp) +{ + xfs_mount_t *mp = ip->i_mount; + xfs_trans_t *tp; + xfs_bstat_t *sbp = &sxp->sx_stat; + xfs_ifork_t *tempifp, *ifp, *tifp; + int src_log_flags, target_log_flags; + int error = 0; + int aforkblks = 0; + int taforkblks = 0; + __uint64_t tmp; + + /* + * We have no way of updating owner information in the BMBT blocks for + * each inode on CRC enabled filesystems, so to avoid corrupting the + * this metadata we simply don't allow extent swaps to occur. + */ + if (xfs_sb_version_hascrc(&mp->m_sb)) + return XFS_ERROR(EINVAL); + + tempifp = kmem_alloc(sizeof(xfs_ifork_t), KM_MAYFAIL); + if (!tempifp) { + error = XFS_ERROR(ENOMEM); + goto out; + } + + /* + * we have to do two separate lock calls here to keep lockdep + * happy. If we try to get all the locks in one call, lock will + * report false positives when we drop the ILOCK and regain them + * below. + */ + xfs_lock_two_inodes(ip, tip, XFS_IOLOCK_EXCL); + xfs_lock_two_inodes(ip, tip, XFS_ILOCK_EXCL); + + /* Verify that both files have the same format */ + if ((ip->i_d.di_mode & S_IFMT) != (tip->i_d.di_mode & S_IFMT)) { + error = XFS_ERROR(EINVAL); + goto out_unlock; + } + + /* Verify both files are either real-time or non-realtime */ + if (XFS_IS_REALTIME_INODE(ip) != XFS_IS_REALTIME_INODE(tip)) { + error = XFS_ERROR(EINVAL); + goto out_unlock; + } + + error = -filemap_write_and_wait(VFS_I(tip)->i_mapping); + if (error) + goto out_unlock; + truncate_pagecache_range(VFS_I(tip), 0, -1); + + /* Verify O_DIRECT for ftmp */ + if (VN_CACHED(VFS_I(tip)) != 0) { + error = XFS_ERROR(EINVAL); + goto out_unlock; + } + + /* Verify all data are being swapped */ + if (sxp->sx_offset != 0 || + sxp->sx_length != ip->i_d.di_size || + sxp->sx_length != tip->i_d.di_size) { + error = XFS_ERROR(EFAULT); + goto out_unlock; + } + + trace_xfs_swap_extent_before(ip, 0); + trace_xfs_swap_extent_before(tip, 1); + + /* check inode formats now that data is flushed */ + error = xfs_swap_extents_check_format(ip, tip); + if (error) { + xfs_notice(mp, + "%s: inode 0x%llx format is incompatible for exchanging.", + __func__, ip->i_ino); + goto out_unlock; + } + + /* + * Compare the current change & modify times with that + * passed in. If they differ, we abort this swap. + * This is the mechanism used to ensure the calling + * process that the file was not changed out from + * under it. + */ + if ((sbp->bs_ctime.tv_sec != VFS_I(ip)->i_ctime.tv_sec) || + (sbp->bs_ctime.tv_nsec != VFS_I(ip)->i_ctime.tv_nsec) || + (sbp->bs_mtime.tv_sec != VFS_I(ip)->i_mtime.tv_sec) || + (sbp->bs_mtime.tv_nsec != VFS_I(ip)->i_mtime.tv_nsec)) { + error = XFS_ERROR(EBUSY); + goto out_unlock; + } + + /* We need to fail if the file is memory mapped. Once we have tossed + * all existing pages, the page fault will have no option + * but to go to the filesystem for pages. By making the page fault call + * vop_read (or write in the case of autogrow) they block on the iolock + * until we have switched the extents. + */ + if (VN_MAPPED(VFS_I(ip))) { + error = XFS_ERROR(EBUSY); + goto out_unlock; + } + + xfs_iunlock(ip, XFS_ILOCK_EXCL); + xfs_iunlock(tip, XFS_ILOCK_EXCL); + + /* + * There is a race condition here since we gave up the + * ilock. However, the data fork will not change since + * we have the iolock (locked for truncation too) so we + * are safe. We don't really care if non-io related + * fields change. + */ + truncate_pagecache_range(VFS_I(ip), 0, -1); + + tp = xfs_trans_alloc(mp, XFS_TRANS_SWAPEXT); + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_ichange, 0, 0); + if (error) { + xfs_iunlock(ip, XFS_IOLOCK_EXCL); + xfs_iunlock(tip, XFS_IOLOCK_EXCL); + xfs_trans_cancel(tp, 0); + goto out; + } + xfs_lock_two_inodes(ip, tip, XFS_ILOCK_EXCL); + + /* + * Count the number of extended attribute blocks + */ + if ( ((XFS_IFORK_Q(ip) != 0) && (ip->i_d.di_anextents > 0)) && + (ip->i_d.di_aformat != XFS_DINODE_FMT_LOCAL)) { + error = xfs_bmap_count_blocks(tp, ip, XFS_ATTR_FORK, &aforkblks); + if (error) + goto out_trans_cancel; + } + if ( ((XFS_IFORK_Q(tip) != 0) && (tip->i_d.di_anextents > 0)) && + (tip->i_d.di_aformat != XFS_DINODE_FMT_LOCAL)) { + error = xfs_bmap_count_blocks(tp, tip, XFS_ATTR_FORK, + &taforkblks); + if (error) + goto out_trans_cancel; + } + + /* + * Swap the data forks of the inodes + */ + ifp = &ip->i_df; + tifp = &tip->i_df; + *tempifp = *ifp; /* struct copy */ + *ifp = *tifp; /* struct copy */ + *tifp = *tempifp; /* struct copy */ + + /* + * Fix the on-disk inode values + */ + tmp = (__uint64_t)ip->i_d.di_nblocks; + ip->i_d.di_nblocks = tip->i_d.di_nblocks - taforkblks + aforkblks; + tip->i_d.di_nblocks = tmp + taforkblks - aforkblks; + + tmp = (__uint64_t) ip->i_d.di_nextents; + ip->i_d.di_nextents = tip->i_d.di_nextents; + tip->i_d.di_nextents = tmp; + + tmp = (__uint64_t) ip->i_d.di_format; + ip->i_d.di_format = tip->i_d.di_format; + tip->i_d.di_format = tmp; + + /* + * The extents in the source inode could still contain speculative + * preallocation beyond EOF (e.g. the file is open but not modified + * while defrag is in progress). In that case, we need to copy over the + * number of delalloc blocks the data fork in the source inode is + * tracking beyond EOF so that when the fork is truncated away when the + * temporary inode is unlinked we don't underrun the i_delayed_blks + * counter on that inode. + */ + ASSERT(tip->i_delayed_blks == 0); + tip->i_delayed_blks = ip->i_delayed_blks; + ip->i_delayed_blks = 0; + + src_log_flags = XFS_ILOG_CORE; + switch (ip->i_d.di_format) { + case XFS_DINODE_FMT_EXTENTS: + /* If the extents fit in the inode, fix the + * pointer. Otherwise it's already NULL or + * pointing to the extent. + */ + if (ip->i_d.di_nextents <= XFS_INLINE_EXTS) { + ifp->if_u1.if_extents = + ifp->if_u2.if_inline_ext; + } + src_log_flags |= XFS_ILOG_DEXT; + break; + case XFS_DINODE_FMT_BTREE: + src_log_flags |= XFS_ILOG_DBROOT; + break; + } + + target_log_flags = XFS_ILOG_CORE; + switch (tip->i_d.di_format) { + case XFS_DINODE_FMT_EXTENTS: + /* If the extents fit in the inode, fix the + * pointer. Otherwise it's already NULL or + * pointing to the extent. + */ + if (tip->i_d.di_nextents <= XFS_INLINE_EXTS) { + tifp->if_u1.if_extents = + tifp->if_u2.if_inline_ext; + } + target_log_flags |= XFS_ILOG_DEXT; + break; + case XFS_DINODE_FMT_BTREE: + target_log_flags |= XFS_ILOG_DBROOT; + break; + } + + + xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL); + xfs_trans_ijoin(tp, tip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL); + + xfs_trans_log_inode(tp, ip, src_log_flags); + xfs_trans_log_inode(tp, tip, target_log_flags); + + /* + * If this is a synchronous mount, make sure that the + * transaction goes to disk before returning to the user. + */ + if (mp->m_flags & XFS_MOUNT_WSYNC) + xfs_trans_set_sync(tp); + + error = xfs_trans_commit(tp, 0); + + trace_xfs_swap_extent_after(ip, 0); + trace_xfs_swap_extent_after(tip, 1); +out: + kmem_free(tempifp); + return error; + +out_unlock: + xfs_iunlock(ip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL); + xfs_iunlock(tip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL); + goto out; + +out_trans_cancel: + xfs_trans_cancel(tp, 0); + goto out_unlock; +} diff --git a/fs/xfs/xfs_bmap_util.h b/fs/xfs/xfs_bmap_util.h new file mode 100644 index 0000000..0612609 --- /dev/null +++ b/fs/xfs/xfs_bmap_util.h @@ -0,0 +1,110 @@ +/* + * Copyright (c) 2000-2006 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#ifndef __XFS_BMAP_UTIL_H__ +#define __XFS_BMAP_UTIL_H__ + +/* Kernel only BMAP related definitions and functions */ + +struct xfs_bmbt_irec; +struct xfs_bmap_free_item; +struct xfs_ifork; +struct xfs_inode; +struct xfs_mount; +struct xfs_trans; + +/* + * Argument structure for xfs_bmap_alloc. + */ +struct xfs_bmalloca { + xfs_fsblock_t *firstblock; /* i/o first block allocated */ + struct xfs_bmap_free *flist; /* bmap freelist */ + struct xfs_trans *tp; /* transaction pointer */ + struct xfs_inode *ip; /* incore inode pointer */ + struct xfs_bmbt_irec prev; /* extent before the new one */ + struct xfs_bmbt_irec got; /* extent after, or delayed */ + + xfs_fileoff_t offset; /* offset in file filling in */ + xfs_extlen_t length; /* i/o length asked/allocated */ + xfs_fsblock_t blkno; /* starting block of new extent */ + + struct xfs_btree_cur *cur; /* btree cursor */ + xfs_extnum_t idx; /* current extent index */ + int nallocs;/* number of extents alloc'd */ + int logflags;/* flags for transaction logging */ + + xfs_extlen_t total; /* total blocks needed for xaction */ + xfs_extlen_t minlen; /* minimum allocation size (blocks) */ + xfs_extlen_t minleft; /* amount must be left after alloc */ + char eof; /* set if allocating past last extent */ + char wasdel; /* replacing a delayed allocation */ + char userdata;/* set if is user data */ + char aeof; /* allocated space at eof */ + char conv; /* overwriting unwritten extents */ + char stack_switch; + int flags; + struct completion *done; + struct work_struct work; + int result; +}; + +int xfs_bmap_finish(struct xfs_trans **tp, struct xfs_bmap_free *flist, + int *committed); +int xfs_bmap_rtalloc(struct xfs_bmalloca *ap); +int xfs_bmapi_allocate(struct xfs_bmalloca *args); +int __xfs_bmapi_allocate(struct xfs_bmalloca *args); +int xfs_bmap_eof(struct xfs_inode *ip, xfs_fileoff_t endoff, + int whichfork, int *eof); +int xfs_bmap_count_blocks(struct xfs_trans *tp, struct xfs_inode *ip, + int whichfork, int *count); +int xfs_bmap_punch_delalloc_range(struct xfs_inode *ip, + xfs_fileoff_t start_fsb, xfs_fileoff_t length); + +/* bmap to userspace formatter - copy to user & advance pointer */ +typedef int (*xfs_bmap_format_t)(void **, struct getbmapx *, int *); +int xfs_getbmap(struct xfs_inode *ip, struct getbmapx *bmv, + xfs_bmap_format_t formatter, void *arg); + +/* functions in xfs_bmap.c that are only needed by xfs_bmap_util.c */ +void xfs_bmap_del_free(struct xfs_bmap_free *flist, + struct xfs_bmap_free_item *prev, + struct xfs_bmap_free_item *free); +int xfs_bmap_extsize_align(struct xfs_mount *mp, struct xfs_bmbt_irec *gotp, + struct xfs_bmbt_irec *prevp, xfs_extlen_t extsz, + int rt, int eof, int delay, int convert, + xfs_fileoff_t *offp, xfs_extlen_t *lenp); +void xfs_bmap_adjacent(struct xfs_bmalloca *ap); +int xfs_bmap_last_extent(struct xfs_trans *tp, struct xfs_inode *ip, + int whichfork, struct xfs_bmbt_irec *rec, + int *is_empty); + +/* preallocation and hole punch interface */ +int xfs_change_file_space(struct xfs_inode *ip, int cmd, + xfs_flock64_t *bf, xfs_off_t offset, + int attr_flags); + +/* EOF block manipulation functions */ +bool xfs_can_free_eofblocks(struct xfs_inode *ip, bool force); +int xfs_free_eofblocks(struct xfs_mount *mp, struct xfs_inode *ip, + bool need_iolock); + +int xfs_swap_extents(struct xfs_inode *ip, struct xfs_inode *tip, + struct xfs_swapext *sx); + +xfs_daddr_t xfs_fsb_to_db(struct xfs_inode *ip, xfs_fsblock_t fsb); + +#endif /* __XFS_BMAP_UTIL_H__ */ diff --git a/fs/xfs/xfs_btree.c b/fs/xfs/xfs_btree.c index 0903960..7a2b4da 100644 --- a/fs/xfs/xfs_btree.c +++ b/fs/xfs/xfs_btree.c @@ -510,7 +510,7 @@ xfs_btree_ptr_addr( } /* - * Get a the root block which is stored in the inode. + * Get the root block which is stored in the inode. * * For now this btree implementation assumes the btree root is always * stored in the if_broot field of an inode fork. @@ -978,6 +978,7 @@ xfs_btree_init_block_int( buf->bb_u.l.bb_owner = cpu_to_be64(owner); uuid_copy(&buf->bb_u.l.bb_uuid, &mp->m_sb.sb_uuid); buf->bb_u.l.bb_pad = 0; + buf->bb_u.l.bb_lsn = 0; } } else { /* owner is a 32 bit value on short blocks */ @@ -989,6 +990,7 @@ xfs_btree_init_block_int( buf->bb_u.s.bb_blkno = cpu_to_be64(blkno); buf->bb_u.s.bb_owner = cpu_to_be32(__owner); uuid_copy(&buf->bb_u.s.bb_uuid, &mp->m_sb.sb_uuid); + buf->bb_u.s.bb_lsn = 0; } } } @@ -1684,7 +1686,7 @@ xfs_lookup_get_search_key( /* * Lookup the record. The cursor is made to point to it, based on dir. - * Return 0 if can't find any such record, 1 for success. + * stat is set to 0 if can't find any such record, 1 for success. */ int /* error */ xfs_btree_lookup( @@ -2756,7 +2758,6 @@ xfs_btree_make_block_unfull( if (numrecs < cur->bc_ops->get_dmaxrecs(cur, level)) { /* A root block that can be made bigger. */ - xfs_iroot_realloc(ip, 1, cur->bc_private.b.whichfork); } else { /* A root block that needs replacing */ diff --git a/fs/xfs/xfs_btree.h b/fs/xfs/xfs_btree.h index 55e3c7c..c8473c7 100644 --- a/fs/xfs/xfs_btree.h +++ b/fs/xfs/xfs_btree.h @@ -88,13 +88,11 @@ struct xfs_btree_block { #define XFS_BTREE_SBLOCK_CRC_LEN (XFS_BTREE_SBLOCK_LEN + 40) #define XFS_BTREE_LBLOCK_CRC_LEN (XFS_BTREE_LBLOCK_LEN + 48) - #define XFS_BTREE_SBLOCK_CRC_OFF \ offsetof(struct xfs_btree_block, bb_u.s.bb_crc) #define XFS_BTREE_LBLOCK_CRC_OFF \ offsetof(struct xfs_btree_block, bb_u.l.bb_crc) - /* * Generic key, ptr and record wrapper structures. * diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c index 1b2472a..c06823f 100644 --- a/fs/xfs/xfs_buf.c +++ b/fs/xfs/xfs_buf.c @@ -35,6 +35,7 @@ #include <linux/freezer.h> #include "xfs_sb.h" +#include "xfs_trans_resv.h" #include "xfs_log.h" #include "xfs_ag.h" #include "xfs_mount.h" @@ -303,7 +304,7 @@ _xfs_buf_free_pages( * Releases the specified buffer. * * The modification state of any associated pages is left unchanged. - * The buffer most not be on any hash - use xfs_buf_rele instead for + * The buffer must not be on any hash - use xfs_buf_rele instead for * hashed and refcounted buffers */ void @@ -1621,7 +1622,7 @@ xfs_setsize_buftarg_flags( /* * When allocating the initial buffer target we have not yet * read in the superblock, so don't know what sized sectors - * are being used is at this early stage. Play safe. + * are being used at this early stage. Play safe. */ STATIC int xfs_setsize_buftarg_early( diff --git a/fs/xfs/xfs_buf_item.c b/fs/xfs/xfs_buf_item.c index bfc4e0c..3a944b1 100644 --- a/fs/xfs/xfs_buf_item.c +++ b/fs/xfs/xfs_buf_item.c @@ -39,6 +39,14 @@ static inline struct xfs_buf_log_item *BUF_ITEM(struct xfs_log_item *lip) STATIC void xfs_buf_do_callbacks(struct xfs_buf *bp); +static inline int +xfs_buf_log_format_size( + struct xfs_buf_log_format *blfp) +{ + return offsetof(struct xfs_buf_log_format, blf_data_map) + + (blfp->blf_map_size * sizeof(blfp->blf_data_map[0])); +} + /* * This returns the number of log iovecs needed to log the * given buf log item. @@ -49,25 +57,27 @@ STATIC void xfs_buf_do_callbacks(struct xfs_buf *bp); * * If the XFS_BLI_STALE flag has been set, then log nothing. */ -STATIC uint +STATIC void xfs_buf_item_size_segment( struct xfs_buf_log_item *bip, - struct xfs_buf_log_format *blfp) + struct xfs_buf_log_format *blfp, + int *nvecs, + int *nbytes) { struct xfs_buf *bp = bip->bli_buf; - uint nvecs; int next_bit; int last_bit; last_bit = xfs_next_bit(blfp->blf_data_map, blfp->blf_map_size, 0); if (last_bit == -1) - return 0; + return; /* * initial count for a dirty buffer is 2 vectors - the format structure * and the first dirty region. */ - nvecs = 2; + *nvecs += 2; + *nbytes += xfs_buf_log_format_size(blfp) + XFS_BLF_CHUNK; while (last_bit != -1) { /* @@ -87,18 +97,17 @@ xfs_buf_item_size_segment( break; } else if (next_bit != last_bit + 1) { last_bit = next_bit; - nvecs++; + (*nvecs)++; } else if (xfs_buf_offset(bp, next_bit * XFS_BLF_CHUNK) != (xfs_buf_offset(bp, last_bit * XFS_BLF_CHUNK) + XFS_BLF_CHUNK)) { last_bit = next_bit; - nvecs++; + (*nvecs)++; } else { last_bit++; } + *nbytes += XFS_BLF_CHUNK; } - - return nvecs; } /* @@ -118,12 +127,13 @@ xfs_buf_item_size_segment( * If the XFS_BLI_STALE flag has been set, then log nothing but the buf log * format structures. */ -STATIC uint +STATIC void xfs_buf_item_size( - struct xfs_log_item *lip) + struct xfs_log_item *lip, + int *nvecs, + int *nbytes) { struct xfs_buf_log_item *bip = BUF_ITEM(lip); - uint nvecs; int i; ASSERT(atomic_read(&bip->bli_refcount) > 0); @@ -135,7 +145,11 @@ xfs_buf_item_size( */ trace_xfs_buf_item_size_stale(bip); ASSERT(bip->__bli_format.blf_flags & XFS_BLF_CANCEL); - return bip->bli_format_count; + *nvecs += bip->bli_format_count; + for (i = 0; i < bip->bli_format_count; i++) { + *nbytes += xfs_buf_log_format_size(&bip->bli_formats[i]); + } + return; } ASSERT(bip->bli_flags & XFS_BLI_LOGGED); @@ -147,7 +161,8 @@ xfs_buf_item_size( * commit, so no vectors are used at all. */ trace_xfs_buf_item_size_ordered(bip); - return XFS_LOG_VEC_ORDERED; + *nvecs = XFS_LOG_VEC_ORDERED; + return; } /* @@ -159,13 +174,11 @@ xfs_buf_item_size( * count for the extra buf log format structure that will need to be * written. */ - nvecs = 0; for (i = 0; i < bip->bli_format_count; i++) { - nvecs += xfs_buf_item_size_segment(bip, &bip->bli_formats[i]); + xfs_buf_item_size_segment(bip, &bip->bli_formats[i], + nvecs, nbytes); } - trace_xfs_buf_item_size(bip); - return nvecs; } static struct xfs_log_iovec * @@ -192,8 +205,7 @@ xfs_buf_item_format_segment( * the actual size of the dirty bitmap rather than the size of the in * memory structure. */ - base_size = offsetof(struct xfs_buf_log_format, blf_data_map) + - (blfp->blf_map_size * sizeof(blfp->blf_data_map[0])); + base_size = xfs_buf_log_format_size(blfp); nvecs = 0; first_bit = xfs_next_bit(blfp->blf_data_map, blfp->blf_map_size, 0); @@ -601,11 +613,9 @@ xfs_buf_item_unlock( } } } - if (clean) - xfs_buf_item_relse(bp); - else if (aborted) { + if (clean || aborted) { if (atomic_dec_and_test(&bip->bli_refcount)) { - ASSERT(XFS_FORCED_SHUTDOWN(lip->li_mountp)); + ASSERT(!aborted || XFS_FORCED_SHUTDOWN(lip->li_mountp)); xfs_buf_item_relse(bp); } } else diff --git a/fs/xfs/xfs_buf_item.h b/fs/xfs/xfs_buf_item.h index 0f1c247..db63710 100644 --- a/fs/xfs/xfs_buf_item.h +++ b/fs/xfs/xfs_buf_item.h @@ -18,101 +18,9 @@ #ifndef __XFS_BUF_ITEM_H__ #define __XFS_BUF_ITEM_H__ -extern kmem_zone_t *xfs_buf_item_zone; - -/* - * This flag indicates that the buffer contains on disk inodes - * and requires special recovery handling. - */ -#define XFS_BLF_INODE_BUF (1<<0) -/* - * This flag indicates that the buffer should not be replayed - * during recovery because its blocks are being freed. - */ -#define XFS_BLF_CANCEL (1<<1) - -/* - * This flag indicates that the buffer contains on disk - * user or group dquots and may require special recovery handling. - */ -#define XFS_BLF_UDQUOT_BUF (1<<2) -#define XFS_BLF_PDQUOT_BUF (1<<3) -#define XFS_BLF_GDQUOT_BUF (1<<4) - -#define XFS_BLF_CHUNK 128 -#define XFS_BLF_SHIFT 7 -#define BIT_TO_WORD_SHIFT 5 -#define NBWORD (NBBY * sizeof(unsigned int)) - -/* - * This is the structure used to lay out a buf log item in the - * log. The data map describes which 128 byte chunks of the buffer - * have been logged. - */ -#define XFS_BLF_DATAMAP_SIZE ((XFS_MAX_BLOCKSIZE / XFS_BLF_CHUNK) / NBWORD) +/* kernel only definitions */ -typedef struct xfs_buf_log_format { - unsigned short blf_type; /* buf log item type indicator */ - unsigned short blf_size; /* size of this item */ - ushort blf_flags; /* misc state */ - ushort blf_len; /* number of blocks in this buf */ - __int64_t blf_blkno; /* starting blkno of this buf */ - unsigned int blf_map_size; /* used size of data bitmap in words */ - unsigned int blf_data_map[XFS_BLF_DATAMAP_SIZE]; /* dirty bitmap */ -} xfs_buf_log_format_t; - -/* - * All buffers now need to tell recovery where the magic number - * is so that it can verify and calculate the CRCs on the buffer correctly - * once the changes have been replayed into the buffer. - * - * The type value is held in the upper 5 bits of the blf_flags field, which is - * an unsigned 16 bit field. Hence we need to shift it 11 bits up and down. - */ -#define XFS_BLFT_BITS 5 -#define XFS_BLFT_SHIFT 11 -#define XFS_BLFT_MASK (((1 << XFS_BLFT_BITS) - 1) << XFS_BLFT_SHIFT) - -enum xfs_blft { - XFS_BLFT_UNKNOWN_BUF = 0, - XFS_BLFT_UDQUOT_BUF, - XFS_BLFT_PDQUOT_BUF, - XFS_BLFT_GDQUOT_BUF, - XFS_BLFT_BTREE_BUF, - XFS_BLFT_AGF_BUF, - XFS_BLFT_AGFL_BUF, - XFS_BLFT_AGI_BUF, - XFS_BLFT_DINO_BUF, - XFS_BLFT_SYMLINK_BUF, - XFS_BLFT_DIR_BLOCK_BUF, - XFS_BLFT_DIR_DATA_BUF, - XFS_BLFT_DIR_FREE_BUF, - XFS_BLFT_DIR_LEAF1_BUF, - XFS_BLFT_DIR_LEAFN_BUF, - XFS_BLFT_DA_NODE_BUF, - XFS_BLFT_ATTR_LEAF_BUF, - XFS_BLFT_ATTR_RMT_BUF, - XFS_BLFT_SB_BUF, - XFS_BLFT_MAX_BUF = (1 << XFS_BLFT_BITS), -}; - -static inline void -xfs_blft_to_flags(struct xfs_buf_log_format *blf, enum xfs_blft type) -{ - ASSERT(type > XFS_BLFT_UNKNOWN_BUF && type < XFS_BLFT_MAX_BUF); - blf->blf_flags &= ~XFS_BLFT_MASK; - blf->blf_flags |= ((type << XFS_BLFT_SHIFT) & XFS_BLFT_MASK); -} - -static inline __uint16_t -xfs_blft_from_flags(struct xfs_buf_log_format *blf) -{ - return (blf->blf_flags & XFS_BLFT_MASK) >> XFS_BLFT_SHIFT; -} - -/* - * buf log item flags - */ +/* buf log item flags */ #define XFS_BLI_HOLD 0x01 #define XFS_BLI_DIRTY 0x02 #define XFS_BLI_STALE 0x04 @@ -133,8 +41,6 @@ xfs_blft_from_flags(struct xfs_buf_log_format *blf) { XFS_BLI_ORDERED, "ORDERED" } -#ifdef __KERNEL__ - struct xfs_buf; struct xfs_mount; struct xfs_buf_log_item; @@ -169,6 +75,6 @@ void xfs_trans_buf_set_type(struct xfs_trans *, struct xfs_buf *, enum xfs_blft); void xfs_trans_buf_copy_type(struct xfs_buf *dst_bp, struct xfs_buf *src_bp); -#endif /* __KERNEL__ */ +extern kmem_zone_t *xfs_buf_item_zone; #endif /* __XFS_BUF_ITEM_H__ */ diff --git a/fs/xfs/xfs_da_btree.c b/fs/xfs/xfs_da_btree.c index 0b8b2a1..d4e59a4 100644 --- a/fs/xfs/xfs_da_btree.c +++ b/fs/xfs/xfs_da_btree.c @@ -27,8 +27,8 @@ #include "xfs_mount.h" #include "xfs_da_btree.h" #include "xfs_bmap_btree.h" -#include "xfs_dir2.h" #include "xfs_dir2_format.h" +#include "xfs_dir2.h" #include "xfs_dir2_priv.h" #include "xfs_dinode.h" #include "xfs_inode.h" @@ -399,7 +399,7 @@ xfs_da3_split( struct xfs_da_intnode *node; struct xfs_buf *bp; int max; - int action; + int action = 0; int error; int i; @@ -2454,9 +2454,9 @@ static int xfs_buf_map_from_irec( struct xfs_mount *mp, struct xfs_buf_map **mapp, - unsigned int *nmaps, + int *nmaps, struct xfs_bmbt_irec *irecs, - unsigned int nirecs) + int nirecs) { struct xfs_buf_map *map; int i; diff --git a/fs/xfs/xfs_da_btree.h b/fs/xfs/xfs_da_btree.h index 6fb3371c..b1f2679 100644 --- a/fs/xfs/xfs_da_btree.h +++ b/fs/xfs/xfs_da_btree.h @@ -133,12 +133,19 @@ extern void xfs_da3_node_hdr_to_disk(struct xfs_da_intnode *to, struct xfs_da3_icnode_hdr *from); static inline int -xfs_da3_node_hdr_size(struct xfs_da_intnode *dap) +__xfs_da3_node_hdr_size(bool v3) { - if (dap->hdr.info.magic == cpu_to_be16(XFS_DA3_NODE_MAGIC)) + if (v3) return sizeof(struct xfs_da3_node_hdr); return sizeof(struct xfs_da_node_hdr); } +static inline int +xfs_da3_node_hdr_size(struct xfs_da_intnode *dap) +{ + bool v3 = dap->hdr.info.magic == cpu_to_be16(XFS_DA3_NODE_MAGIC); + + return __xfs_da3_node_hdr_size(v3); +} static inline struct xfs_da_node_entry * xfs_da3_node_tree_p(struct xfs_da_intnode *dap) @@ -176,6 +183,7 @@ enum xfs_dacmp { typedef struct xfs_da_args { const __uint8_t *name; /* string (maybe not NULL terminated) */ int namelen; /* length of string (maybe no NULL) */ + __uint8_t filetype; /* filetype of inode for directories */ __uint8_t *value; /* set of bytes (maybe contain NULLs) */ int valuelen; /* length of value */ int flags; /* argument flags (eg: ATTR_NOCREATE) */ diff --git a/fs/xfs/xfs_dfrag.c b/fs/xfs/xfs_dfrag.c deleted file mode 100644 index e36445c..0000000 --- a/fs/xfs/xfs_dfrag.c +++ /dev/null @@ -1,459 +0,0 @@ -/* - * Copyright (c) 2000-2006 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#include "xfs.h" -#include "xfs_fs.h" -#include "xfs_types.h" -#include "xfs_log.h" -#include "xfs_trans.h" -#include "xfs_sb.h" -#include "xfs_ag.h" -#include "xfs_mount.h" -#include "xfs_bmap_btree.h" -#include "xfs_alloc_btree.h" -#include "xfs_ialloc_btree.h" -#include "xfs_btree.h" -#include "xfs_dinode.h" -#include "xfs_inode.h" -#include "xfs_inode_item.h" -#include "xfs_bmap.h" -#include "xfs_itable.h" -#include "xfs_dfrag.h" -#include "xfs_error.h" -#include "xfs_vnodeops.h" -#include "xfs_trace.h" - - -static int xfs_swap_extents( - xfs_inode_t *ip, /* target inode */ - xfs_inode_t *tip, /* tmp inode */ - xfs_swapext_t *sxp); - -/* - * ioctl interface for swapext - */ -int -xfs_swapext( - xfs_swapext_t *sxp) -{ - xfs_inode_t *ip, *tip; - struct fd f, tmp; - int error = 0; - - /* Pull information for the target fd */ - f = fdget((int)sxp->sx_fdtarget); - if (!f.file) { - error = XFS_ERROR(EINVAL); - goto out; - } - - if (!(f.file->f_mode & FMODE_WRITE) || - !(f.file->f_mode & FMODE_READ) || - (f.file->f_flags & O_APPEND)) { - error = XFS_ERROR(EBADF); - goto out_put_file; - } - - tmp = fdget((int)sxp->sx_fdtmp); - if (!tmp.file) { - error = XFS_ERROR(EINVAL); - goto out_put_file; - } - - if (!(tmp.file->f_mode & FMODE_WRITE) || - !(tmp.file->f_mode & FMODE_READ) || - (tmp.file->f_flags & O_APPEND)) { - error = XFS_ERROR(EBADF); - goto out_put_tmp_file; - } - - if (IS_SWAPFILE(file_inode(f.file)) || - IS_SWAPFILE(file_inode(tmp.file))) { - error = XFS_ERROR(EINVAL); - goto out_put_tmp_file; - } - - ip = XFS_I(file_inode(f.file)); - tip = XFS_I(file_inode(tmp.file)); - - if (ip->i_mount != tip->i_mount) { - error = XFS_ERROR(EINVAL); - goto out_put_tmp_file; - } - - if (ip->i_ino == tip->i_ino) { - error = XFS_ERROR(EINVAL); - goto out_put_tmp_file; - } - - if (XFS_FORCED_SHUTDOWN(ip->i_mount)) { - error = XFS_ERROR(EIO); - goto out_put_tmp_file; - } - - error = xfs_swap_extents(ip, tip, sxp); - - out_put_tmp_file: - fdput(tmp); - out_put_file: - fdput(f); - out: - return error; -} - -/* - * We need to check that the format of the data fork in the temporary inode is - * valid for the target inode before doing the swap. This is not a problem with - * attr1 because of the fixed fork offset, but attr2 has a dynamically sized - * data fork depending on the space the attribute fork is taking so we can get - * invalid formats on the target inode. - * - * E.g. target has space for 7 extents in extent format, temp inode only has - * space for 6. If we defragment down to 7 extents, then the tmp format is a - * btree, but when swapped it needs to be in extent format. Hence we can't just - * blindly swap data forks on attr2 filesystems. - * - * Note that we check the swap in both directions so that we don't end up with - * a corrupt temporary inode, either. - * - * Note that fixing the way xfs_fsr sets up the attribute fork in the source - * inode will prevent this situation from occurring, so all we do here is - * reject and log the attempt. basically we are putting the responsibility on - * userspace to get this right. - */ -static int -xfs_swap_extents_check_format( - xfs_inode_t *ip, /* target inode */ - xfs_inode_t *tip) /* tmp inode */ -{ - - /* Should never get a local format */ - if (ip->i_d.di_format == XFS_DINODE_FMT_LOCAL || - tip->i_d.di_format == XFS_DINODE_FMT_LOCAL) - return EINVAL; - - /* - * if the target inode has less extents that then temporary inode then - * why did userspace call us? - */ - if (ip->i_d.di_nextents < tip->i_d.di_nextents) - return EINVAL; - - /* - * if the target inode is in extent form and the temp inode is in btree - * form then we will end up with the target inode in the wrong format - * as we already know there are less extents in the temp inode. - */ - if (ip->i_d.di_format == XFS_DINODE_FMT_EXTENTS && - tip->i_d.di_format == XFS_DINODE_FMT_BTREE) - return EINVAL; - - /* Check temp in extent form to max in target */ - if (tip->i_d.di_format == XFS_DINODE_FMT_EXTENTS && - XFS_IFORK_NEXTENTS(tip, XFS_DATA_FORK) > - XFS_IFORK_MAXEXT(ip, XFS_DATA_FORK)) - return EINVAL; - - /* Check target in extent form to max in temp */ - if (ip->i_d.di_format == XFS_DINODE_FMT_EXTENTS && - XFS_IFORK_NEXTENTS(ip, XFS_DATA_FORK) > - XFS_IFORK_MAXEXT(tip, XFS_DATA_FORK)) - return EINVAL; - - /* - * If we are in a btree format, check that the temp root block will fit - * in the target and that it has enough extents to be in btree format - * in the target. - * - * Note that we have to be careful to allow btree->extent conversions - * (a common defrag case) which will occur when the temp inode is in - * extent format... - */ - if (tip->i_d.di_format == XFS_DINODE_FMT_BTREE) { - if (XFS_IFORK_BOFF(ip) && - XFS_BMAP_BMDR_SPACE(tip->i_df.if_broot) > XFS_IFORK_BOFF(ip)) - return EINVAL; - if (XFS_IFORK_NEXTENTS(tip, XFS_DATA_FORK) <= - XFS_IFORK_MAXEXT(ip, XFS_DATA_FORK)) - return EINVAL; - } - - /* Reciprocal target->temp btree format checks */ - if (ip->i_d.di_format == XFS_DINODE_FMT_BTREE) { - if (XFS_IFORK_BOFF(tip) && - XFS_BMAP_BMDR_SPACE(ip->i_df.if_broot) > XFS_IFORK_BOFF(tip)) - return EINVAL; - if (XFS_IFORK_NEXTENTS(ip, XFS_DATA_FORK) <= - XFS_IFORK_MAXEXT(tip, XFS_DATA_FORK)) - return EINVAL; - } - - return 0; -} - -static int -xfs_swap_extents( - xfs_inode_t *ip, /* target inode */ - xfs_inode_t *tip, /* tmp inode */ - xfs_swapext_t *sxp) -{ - xfs_mount_t *mp = ip->i_mount; - xfs_trans_t *tp; - xfs_bstat_t *sbp = &sxp->sx_stat; - xfs_ifork_t *tempifp, *ifp, *tifp; - int src_log_flags, target_log_flags; - int error = 0; - int aforkblks = 0; - int taforkblks = 0; - __uint64_t tmp; - - /* - * We have no way of updating owner information in the BMBT blocks for - * each inode on CRC enabled filesystems, so to avoid corrupting the - * this metadata we simply don't allow extent swaps to occur. - */ - if (xfs_sb_version_hascrc(&mp->m_sb)) - return XFS_ERROR(EINVAL); - - tempifp = kmem_alloc(sizeof(xfs_ifork_t), KM_MAYFAIL); - if (!tempifp) { - error = XFS_ERROR(ENOMEM); - goto out; - } - - /* - * we have to do two separate lock calls here to keep lockdep - * happy. If we try to get all the locks in one call, lock will - * report false positives when we drop the ILOCK and regain them - * below. - */ - xfs_lock_two_inodes(ip, tip, XFS_IOLOCK_EXCL); - xfs_lock_two_inodes(ip, tip, XFS_ILOCK_EXCL); - - /* Verify that both files have the same format */ - if ((ip->i_d.di_mode & S_IFMT) != (tip->i_d.di_mode & S_IFMT)) { - error = XFS_ERROR(EINVAL); - goto out_unlock; - } - - /* Verify both files are either real-time or non-realtime */ - if (XFS_IS_REALTIME_INODE(ip) != XFS_IS_REALTIME_INODE(tip)) { - error = XFS_ERROR(EINVAL); - goto out_unlock; - } - - error = -filemap_write_and_wait(VFS_I(tip)->i_mapping); - if (error) - goto out_unlock; - truncate_pagecache_range(VFS_I(tip), 0, -1); - - /* Verify O_DIRECT for ftmp */ - if (VN_CACHED(VFS_I(tip)) != 0) { - error = XFS_ERROR(EINVAL); - goto out_unlock; - } - - /* Verify all data are being swapped */ - if (sxp->sx_offset != 0 || - sxp->sx_length != ip->i_d.di_size || - sxp->sx_length != tip->i_d.di_size) { - error = XFS_ERROR(EFAULT); - goto out_unlock; - } - - trace_xfs_swap_extent_before(ip, 0); - trace_xfs_swap_extent_before(tip, 1); - - /* check inode formats now that data is flushed */ - error = xfs_swap_extents_check_format(ip, tip); - if (error) { - xfs_notice(mp, - "%s: inode 0x%llx format is incompatible for exchanging.", - __func__, ip->i_ino); - goto out_unlock; - } - - /* - * Compare the current change & modify times with that - * passed in. If they differ, we abort this swap. - * This is the mechanism used to ensure the calling - * process that the file was not changed out from - * under it. - */ - if ((sbp->bs_ctime.tv_sec != VFS_I(ip)->i_ctime.tv_sec) || - (sbp->bs_ctime.tv_nsec != VFS_I(ip)->i_ctime.tv_nsec) || - (sbp->bs_mtime.tv_sec != VFS_I(ip)->i_mtime.tv_sec) || - (sbp->bs_mtime.tv_nsec != VFS_I(ip)->i_mtime.tv_nsec)) { - error = XFS_ERROR(EBUSY); - goto out_unlock; - } - - /* We need to fail if the file is memory mapped. Once we have tossed - * all existing pages, the page fault will have no option - * but to go to the filesystem for pages. By making the page fault call - * vop_read (or write in the case of autogrow) they block on the iolock - * until we have switched the extents. - */ - if (VN_MAPPED(VFS_I(ip))) { - error = XFS_ERROR(EBUSY); - goto out_unlock; - } - - xfs_iunlock(ip, XFS_ILOCK_EXCL); - xfs_iunlock(tip, XFS_ILOCK_EXCL); - - /* - * There is a race condition here since we gave up the - * ilock. However, the data fork will not change since - * we have the iolock (locked for truncation too) so we - * are safe. We don't really care if non-io related - * fields change. - */ - truncate_pagecache_range(VFS_I(ip), 0, -1); - - tp = xfs_trans_alloc(mp, XFS_TRANS_SWAPEXT); - if ((error = xfs_trans_reserve(tp, 0, - XFS_ICHANGE_LOG_RES(mp), 0, - 0, 0))) { - xfs_iunlock(ip, XFS_IOLOCK_EXCL); - xfs_iunlock(tip, XFS_IOLOCK_EXCL); - xfs_trans_cancel(tp, 0); - goto out; - } - xfs_lock_two_inodes(ip, tip, XFS_ILOCK_EXCL); - - /* - * Count the number of extended attribute blocks - */ - if ( ((XFS_IFORK_Q(ip) != 0) && (ip->i_d.di_anextents > 0)) && - (ip->i_d.di_aformat != XFS_DINODE_FMT_LOCAL)) { - error = xfs_bmap_count_blocks(tp, ip, XFS_ATTR_FORK, &aforkblks); - if (error) - goto out_trans_cancel; - } - if ( ((XFS_IFORK_Q(tip) != 0) && (tip->i_d.di_anextents > 0)) && - (tip->i_d.di_aformat != XFS_DINODE_FMT_LOCAL)) { - error = xfs_bmap_count_blocks(tp, tip, XFS_ATTR_FORK, - &taforkblks); - if (error) - goto out_trans_cancel; - } - - /* - * Swap the data forks of the inodes - */ - ifp = &ip->i_df; - tifp = &tip->i_df; - *tempifp = *ifp; /* struct copy */ - *ifp = *tifp; /* struct copy */ - *tifp = *tempifp; /* struct copy */ - - /* - * Fix the on-disk inode values - */ - tmp = (__uint64_t)ip->i_d.di_nblocks; - ip->i_d.di_nblocks = tip->i_d.di_nblocks - taforkblks + aforkblks; - tip->i_d.di_nblocks = tmp + taforkblks - aforkblks; - - tmp = (__uint64_t) ip->i_d.di_nextents; - ip->i_d.di_nextents = tip->i_d.di_nextents; - tip->i_d.di_nextents = tmp; - - tmp = (__uint64_t) ip->i_d.di_format; - ip->i_d.di_format = tip->i_d.di_format; - tip->i_d.di_format = tmp; - - /* - * The extents in the source inode could still contain speculative - * preallocation beyond EOF (e.g. the file is open but not modified - * while defrag is in progress). In that case, we need to copy over the - * number of delalloc blocks the data fork in the source inode is - * tracking beyond EOF so that when the fork is truncated away when the - * temporary inode is unlinked we don't underrun the i_delayed_blks - * counter on that inode. - */ - ASSERT(tip->i_delayed_blks == 0); - tip->i_delayed_blks = ip->i_delayed_blks; - ip->i_delayed_blks = 0; - - src_log_flags = XFS_ILOG_CORE; - switch (ip->i_d.di_format) { - case XFS_DINODE_FMT_EXTENTS: - /* If the extents fit in the inode, fix the - * pointer. Otherwise it's already NULL or - * pointing to the extent. - */ - if (ip->i_d.di_nextents <= XFS_INLINE_EXTS) { - ifp->if_u1.if_extents = - ifp->if_u2.if_inline_ext; - } - src_log_flags |= XFS_ILOG_DEXT; - break; - case XFS_DINODE_FMT_BTREE: - src_log_flags |= XFS_ILOG_DBROOT; - break; - } - - target_log_flags = XFS_ILOG_CORE; - switch (tip->i_d.di_format) { - case XFS_DINODE_FMT_EXTENTS: - /* If the extents fit in the inode, fix the - * pointer. Otherwise it's already NULL or - * pointing to the extent. - */ - if (tip->i_d.di_nextents <= XFS_INLINE_EXTS) { - tifp->if_u1.if_extents = - tifp->if_u2.if_inline_ext; - } - target_log_flags |= XFS_ILOG_DEXT; - break; - case XFS_DINODE_FMT_BTREE: - target_log_flags |= XFS_ILOG_DBROOT; - break; - } - - - xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL); - xfs_trans_ijoin(tp, tip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL); - - xfs_trans_log_inode(tp, ip, src_log_flags); - xfs_trans_log_inode(tp, tip, target_log_flags); - - /* - * If this is a synchronous mount, make sure that the - * transaction goes to disk before returning to the user. - */ - if (mp->m_flags & XFS_MOUNT_WSYNC) - xfs_trans_set_sync(tp); - - error = xfs_trans_commit(tp, 0); - - trace_xfs_swap_extent_after(ip, 0); - trace_xfs_swap_extent_after(tip, 1); -out: - kmem_free(tempifp); - return error; - -out_unlock: - xfs_iunlock(ip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL); - xfs_iunlock(tip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL); - goto out; - -out_trans_cancel: - xfs_trans_cancel(tp, 0); - goto out_unlock; -} diff --git a/fs/xfs/xfs_dfrag.h b/fs/xfs/xfs_dfrag.h deleted file mode 100644 index 20bdd93..0000000 --- a/fs/xfs/xfs_dfrag.h +++ /dev/null @@ -1,53 +0,0 @@ -/* - * Copyright (c) 2000,2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#ifndef __XFS_DFRAG_H__ -#define __XFS_DFRAG_H__ - -/* - * Structure passed to xfs_swapext - */ - -typedef struct xfs_swapext -{ - __int64_t sx_version; /* version */ - __int64_t sx_fdtarget; /* fd of target file */ - __int64_t sx_fdtmp; /* fd of tmp file */ - xfs_off_t sx_offset; /* offset into file */ - xfs_off_t sx_length; /* leng from offset */ - char sx_pad[16]; /* pad space, unused */ - xfs_bstat_t sx_stat; /* stat of target b4 copy */ -} xfs_swapext_t; - -/* - * Version flag - */ -#define XFS_SX_VERSION 0 - -#ifdef __KERNEL__ -/* - * Prototypes for visible xfs_dfrag.c routines. - */ - -/* - * Syscall interface for xfs_swapext - */ -int xfs_swapext(struct xfs_swapext *sx); - -#endif /* __KERNEL__ */ - -#endif /* __XFS_DFRAG_H__ */ diff --git a/fs/xfs/xfs_dir2.c b/fs/xfs/xfs_dir2.c index 8f023de..edf203a 100644 --- a/fs/xfs/xfs_dir2.c +++ b/fs/xfs/xfs_dir2.c @@ -31,14 +31,14 @@ #include "xfs_inode.h" #include "xfs_inode_item.h" #include "xfs_bmap.h" -#include "xfs_dir2.h" #include "xfs_dir2_format.h" +#include "xfs_dir2.h" #include "xfs_dir2_priv.h" #include "xfs_error.h" -#include "xfs_vnodeops.h" #include "xfs_trace.h" -struct xfs_name xfs_name_dotdot = { (unsigned char *)"..", 2}; +struct xfs_name xfs_name_dotdot = { (unsigned char *)"..", 2, XFS_DIR3_FT_DIR }; + /* * ASCII case-insensitive (ie. A-Z) support for directories that was @@ -90,6 +90,9 @@ void xfs_dir_mount( xfs_mount_t *mp) { + int nodehdr_size; + + ASSERT(xfs_sb_version_hasdirv2(&mp->m_sb)); ASSERT((1 << (mp->m_sb.sb_blocklog + mp->m_sb.sb_dirblklog)) <= XFS_MAX_BLOCKSIZE); @@ -98,12 +101,13 @@ xfs_dir_mount( mp->m_dirdatablk = xfs_dir2_db_to_da(mp, XFS_DIR2_DATA_FIRSTDB(mp)); mp->m_dirleafblk = xfs_dir2_db_to_da(mp, XFS_DIR2_LEAF_FIRSTDB(mp)); mp->m_dirfreeblk = xfs_dir2_db_to_da(mp, XFS_DIR2_FREE_FIRSTDB(mp)); - mp->m_attr_node_ents = - (mp->m_sb.sb_blocksize - (uint)sizeof(xfs_da_node_hdr_t)) / - (uint)sizeof(xfs_da_node_entry_t); - mp->m_dir_node_ents = - (mp->m_dirblksize - (uint)sizeof(xfs_da_node_hdr_t)) / - (uint)sizeof(xfs_da_node_entry_t); + + nodehdr_size = __xfs_da3_node_hdr_size(xfs_sb_version_hascrc(&mp->m_sb)); + mp->m_attr_node_ents = (mp->m_sb.sb_blocksize - nodehdr_size) / + (uint)sizeof(xfs_da_node_entry_t); + mp->m_dir_node_ents = (mp->m_dirblksize - nodehdr_size) / + (uint)sizeof(xfs_da_node_entry_t); + mp->m_dir_magicpct = (mp->m_dirblksize * 37) / 100; if (xfs_sb_version_hasasciici(&mp->m_sb)) mp->m_dirnameops = &xfs_ascii_ci_nameops; @@ -209,6 +213,7 @@ xfs_dir_createname( memset(&args, 0, sizeof(xfs_da_args_t)); args.name = name->name; args.namelen = name->len; + args.filetype = name->type; args.hashval = dp->i_mount->m_dirnameops->hashname(name); args.inumber = inum; args.dp = dp; @@ -283,6 +288,7 @@ xfs_dir_lookup( memset(&args, 0, sizeof(xfs_da_args_t)); args.name = name->name; args.namelen = name->len; + args.filetype = name->type; args.hashval = dp->i_mount->m_dirnameops->hashname(name); args.dp = dp; args.whichfork = XFS_DATA_FORK; @@ -338,6 +344,7 @@ xfs_dir_removename( memset(&args, 0, sizeof(xfs_da_args_t)); args.name = name->name; args.namelen = name->len; + args.filetype = name->type; args.hashval = dp->i_mount->m_dirnameops->hashname(name); args.inumber = ino; args.dp = dp; @@ -363,37 +370,6 @@ xfs_dir_removename( } /* - * Read a directory. - */ -int -xfs_readdir( - xfs_inode_t *dp, - struct dir_context *ctx, - size_t bufsize) -{ - int rval; /* return value */ - int v; /* type-checking value */ - - trace_xfs_readdir(dp); - - if (XFS_FORCED_SHUTDOWN(dp->i_mount)) - return XFS_ERROR(EIO); - - ASSERT(S_ISDIR(dp->i_d.di_mode)); - XFS_STATS_INC(xs_dir_getdents); - - if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL) - rval = xfs_dir2_sf_getdents(dp, ctx); - else if ((rval = xfs_dir2_isblock(NULL, dp, &v))) - ; - else if (v) - rval = xfs_dir2_block_getdents(dp, ctx); - else - rval = xfs_dir2_leaf_getdents(dp, ctx, bufsize); - return rval; -} - -/* * Replace the inode number of a directory entry. */ int @@ -418,6 +394,7 @@ xfs_dir_replace( memset(&args, 0, sizeof(xfs_da_args_t)); args.name = name->name; args.namelen = name->len; + args.filetype = name->type; args.hashval = dp->i_mount->m_dirnameops->hashname(name); args.inumber = inum; args.dp = dp; @@ -465,6 +442,7 @@ xfs_dir_canenter( memset(&args, 0, sizeof(xfs_da_args_t)); args.name = name->name; args.namelen = name->len; + args.filetype = name->type; args.hashval = dp->i_mount->m_dirnameops->hashname(name); args.dp = dp; args.whichfork = XFS_DATA_FORK; diff --git a/fs/xfs/xfs_dir2.h b/fs/xfs/xfs_dir2.h index e937d99..9910401 100644 --- a/fs/xfs/xfs_dir2.h +++ b/fs/xfs/xfs_dir2.h @@ -23,6 +23,11 @@ struct xfs_da_args; struct xfs_inode; struct xfs_mount; struct xfs_trans; +struct xfs_dir2_sf_hdr; +struct xfs_dir2_sf_entry; +struct xfs_dir2_data_hdr; +struct xfs_dir2_data_entry; +struct xfs_dir2_data_unused; extern struct xfs_name xfs_name_dotdot; @@ -57,4 +62,45 @@ extern int xfs_dir_canenter(struct xfs_trans *tp, struct xfs_inode *dp, */ extern int xfs_dir2_sf_to_block(struct xfs_da_args *args); +/* + * Interface routines used by userspace utilities + */ +extern xfs_ino_t xfs_dir2_sf_get_parent_ino(struct xfs_dir2_sf_hdr *sfp); +extern void xfs_dir2_sf_put_parent_ino(struct xfs_dir2_sf_hdr *sfp, + xfs_ino_t ino); +extern xfs_ino_t xfs_dir3_sfe_get_ino(struct xfs_mount *mp, + struct xfs_dir2_sf_hdr *sfp, struct xfs_dir2_sf_entry *sfep); +extern void xfs_dir3_sfe_put_ino(struct xfs_mount *mp, + struct xfs_dir2_sf_hdr *hdr, struct xfs_dir2_sf_entry *sfep, + xfs_ino_t ino); + +extern int xfs_dir2_isblock(struct xfs_trans *tp, struct xfs_inode *dp, int *r); +extern int xfs_dir2_isleaf(struct xfs_trans *tp, struct xfs_inode *dp, int *r); +extern int xfs_dir2_shrink_inode(struct xfs_da_args *args, xfs_dir2_db_t db, + struct xfs_buf *bp); + +extern void xfs_dir2_data_freescan(struct xfs_mount *mp, + struct xfs_dir2_data_hdr *hdr, int *loghead); +extern void xfs_dir2_data_log_entry(struct xfs_trans *tp, struct xfs_buf *bp, + struct xfs_dir2_data_entry *dep); +extern void xfs_dir2_data_log_header(struct xfs_trans *tp, + struct xfs_buf *bp); +extern void xfs_dir2_data_log_unused(struct xfs_trans *tp, struct xfs_buf *bp, + struct xfs_dir2_data_unused *dup); +extern void xfs_dir2_data_make_free(struct xfs_trans *tp, struct xfs_buf *bp, + xfs_dir2_data_aoff_t offset, xfs_dir2_data_aoff_t len, + int *needlogp, int *needscanp); +extern void xfs_dir2_data_use_free(struct xfs_trans *tp, struct xfs_buf *bp, + struct xfs_dir2_data_unused *dup, xfs_dir2_data_aoff_t offset, + xfs_dir2_data_aoff_t len, int *needlogp, int *needscanp); + +extern struct xfs_dir2_data_free *xfs_dir2_data_freefind( + struct xfs_dir2_data_hdr *hdr, struct xfs_dir2_data_unused *dup); + +extern const struct xfs_buf_ops xfs_dir3_block_buf_ops; +extern const struct xfs_buf_ops xfs_dir3_leafn_buf_ops; +extern const struct xfs_buf_ops xfs_dir3_leaf1_buf_ops; +extern const struct xfs_buf_ops xfs_dir3_free_buf_ops; +extern const struct xfs_buf_ops xfs_dir3_data_buf_ops; + #endif /* __XFS_DIR2_H__ */ diff --git a/fs/xfs/xfs_dir2_block.c b/fs/xfs/xfs_dir2_block.c index 5e7fbd7..0957aa9 100644 --- a/fs/xfs/xfs_dir2_block.c +++ b/fs/xfs/xfs_dir2_block.c @@ -31,8 +31,8 @@ #include "xfs_inode_item.h" #include "xfs_bmap.h" #include "xfs_buf_item.h" -#include "xfs_dir2.h" #include "xfs_dir2_format.h" +#include "xfs_dir2.h" #include "xfs_dir2_priv.h" #include "xfs_error.h" #include "xfs_trace.h" @@ -126,7 +126,7 @@ const struct xfs_buf_ops xfs_dir3_block_buf_ops = { .verify_write = xfs_dir3_block_write_verify, }; -static int +int xfs_dir3_block_read( struct xfs_trans *tp, struct xfs_inode *dp, @@ -369,7 +369,7 @@ xfs_dir2_block_addname( if (error) return error; - len = xfs_dir2_data_entsize(args->namelen); + len = xfs_dir3_data_entsize(mp, args->namelen); /* * Set up pointers to parts of the block. @@ -549,7 +549,8 @@ xfs_dir2_block_addname( dep->inumber = cpu_to_be64(args->inumber); dep->namelen = args->namelen; memcpy(dep->name, args->name, args->namelen); - tagp = xfs_dir2_data_entry_tag_p(dep); + xfs_dir3_dirent_put_ftype(mp, dep, args->filetype); + tagp = xfs_dir3_data_entry_tag_p(mp, dep); *tagp = cpu_to_be16((char *)dep - (char *)hdr); /* * Clean up the bestfree array and log the header, tail, and entry. @@ -565,101 +566,6 @@ xfs_dir2_block_addname( } /* - * Readdir for block directories. - */ -int /* error */ -xfs_dir2_block_getdents( - xfs_inode_t *dp, /* incore inode */ - struct dir_context *ctx) -{ - xfs_dir2_data_hdr_t *hdr; /* block header */ - struct xfs_buf *bp; /* buffer for block */ - xfs_dir2_block_tail_t *btp; /* block tail */ - xfs_dir2_data_entry_t *dep; /* block data entry */ - xfs_dir2_data_unused_t *dup; /* block unused entry */ - char *endptr; /* end of the data entries */ - int error; /* error return value */ - xfs_mount_t *mp; /* filesystem mount point */ - char *ptr; /* current data entry */ - int wantoff; /* starting block offset */ - xfs_off_t cook; - - mp = dp->i_mount; - /* - * If the block number in the offset is out of range, we're done. - */ - if (xfs_dir2_dataptr_to_db(mp, ctx->pos) > mp->m_dirdatablk) - return 0; - - error = xfs_dir3_block_read(NULL, dp, &bp); - if (error) - return error; - - /* - * Extract the byte offset we start at from the seek pointer. - * We'll skip entries before this. - */ - wantoff = xfs_dir2_dataptr_to_off(mp, ctx->pos); - hdr = bp->b_addr; - xfs_dir3_data_check(dp, bp); - /* - * Set up values for the loop. - */ - btp = xfs_dir2_block_tail_p(mp, hdr); - ptr = (char *)xfs_dir3_data_entry_p(hdr); - endptr = (char *)xfs_dir2_block_leaf_p(btp); - - /* - * Loop over the data portion of the block. - * Each object is a real entry (dep) or an unused one (dup). - */ - while (ptr < endptr) { - dup = (xfs_dir2_data_unused_t *)ptr; - /* - * Unused, skip it. - */ - if (be16_to_cpu(dup->freetag) == XFS_DIR2_DATA_FREE_TAG) { - ptr += be16_to_cpu(dup->length); - continue; - } - - dep = (xfs_dir2_data_entry_t *)ptr; - - /* - * Bump pointer for the next iteration. - */ - ptr += xfs_dir2_data_entsize(dep->namelen); - /* - * The entry is before the desired starting point, skip it. - */ - if ((char *)dep - (char *)hdr < wantoff) - continue; - - cook = xfs_dir2_db_off_to_dataptr(mp, mp->m_dirdatablk, - (char *)dep - (char *)hdr); - - ctx->pos = cook & 0x7fffffff; - /* - * If it didn't fit, set the final offset to here & return. - */ - if (!dir_emit(ctx, (char *)dep->name, dep->namelen, - be64_to_cpu(dep->inumber), DT_UNKNOWN)) { - xfs_trans_brelse(NULL, bp); - return 0; - } - } - - /* - * Reached the end of the block. - * Set the offset to a non-existent block 1 and return. - */ - ctx->pos = xfs_dir2_db_off_to_dataptr(mp, mp->m_dirdatablk + 1, 0) & - 0x7fffffff; - xfs_trans_brelse(NULL, bp); - return 0; -} - -/* * Log leaf entries from the block. */ static void @@ -736,6 +642,7 @@ xfs_dir2_block_lookup( * Fill in inode number, CI name if appropriate, release the block. */ args->inumber = be64_to_cpu(dep->inumber); + args->filetype = xfs_dir3_dirent_get_ftype(mp, dep); error = xfs_dir_cilookup_result(args, dep->name, dep->namelen); xfs_trans_brelse(args->trans, bp); return XFS_ERROR(error); @@ -894,7 +801,7 @@ xfs_dir2_block_removename( needlog = needscan = 0; xfs_dir2_data_make_free(tp, bp, (xfs_dir2_data_aoff_t)((char *)dep - (char *)hdr), - xfs_dir2_data_entsize(dep->namelen), &needlog, &needscan); + xfs_dir3_data_entsize(mp, dep->namelen), &needlog, &needscan); /* * Fix up the block tail. */ @@ -968,6 +875,7 @@ xfs_dir2_block_replace( * Change the inode number to the new value. */ dep->inumber = cpu_to_be64(args->inumber); + xfs_dir3_dirent_put_ftype(mp, dep, args->filetype); xfs_dir2_data_log_entry(args->trans, bp, dep); xfs_dir3_data_check(dp, bp); return 0; @@ -1254,7 +1162,8 @@ xfs_dir2_sf_to_block( dep->inumber = cpu_to_be64(dp->i_ino); dep->namelen = 1; dep->name[0] = '.'; - tagp = xfs_dir2_data_entry_tag_p(dep); + xfs_dir3_dirent_put_ftype(mp, dep, XFS_DIR3_FT_DIR); + tagp = xfs_dir3_data_entry_tag_p(mp, dep); *tagp = cpu_to_be16((char *)dep - (char *)hdr); xfs_dir2_data_log_entry(tp, bp, dep); blp[0].hashval = cpu_to_be32(xfs_dir_hash_dot); @@ -1267,7 +1176,8 @@ xfs_dir2_sf_to_block( dep->inumber = cpu_to_be64(xfs_dir2_sf_get_parent_ino(sfp)); dep->namelen = 2; dep->name[0] = dep->name[1] = '.'; - tagp = xfs_dir2_data_entry_tag_p(dep); + xfs_dir3_dirent_put_ftype(mp, dep, XFS_DIR3_FT_DIR); + tagp = xfs_dir3_data_entry_tag_p(mp, dep); *tagp = cpu_to_be16((char *)dep - (char *)hdr); xfs_dir2_data_log_entry(tp, bp, dep); blp[1].hashval = cpu_to_be32(xfs_dir_hash_dotdot); @@ -1312,10 +1222,12 @@ xfs_dir2_sf_to_block( * Copy a real entry. */ dep = (xfs_dir2_data_entry_t *)((char *)hdr + newoffset); - dep->inumber = cpu_to_be64(xfs_dir2_sfe_get_ino(sfp, sfep)); + dep->inumber = cpu_to_be64(xfs_dir3_sfe_get_ino(mp, sfp, sfep)); dep->namelen = sfep->namelen; + xfs_dir3_dirent_put_ftype(mp, dep, + xfs_dir3_sfe_get_ftype(mp, sfp, sfep)); memcpy(dep->name, sfep->name, dep->namelen); - tagp = xfs_dir2_data_entry_tag_p(dep); + tagp = xfs_dir3_data_entry_tag_p(mp, dep); *tagp = cpu_to_be16((char *)dep - (char *)hdr); xfs_dir2_data_log_entry(tp, bp, dep); name.name = sfep->name; @@ -1328,7 +1240,7 @@ xfs_dir2_sf_to_block( if (++i == sfp->count) sfep = NULL; else - sfep = xfs_dir2_sf_nextentry(sfp, sfep); + sfep = xfs_dir3_sf_nextentry(mp, sfp, sfep); } /* Done with the temporary buffer */ kmem_free(sfp); diff --git a/fs/xfs/xfs_dir2_data.c b/fs/xfs/xfs_dir2_data.c index c293023..47e1326 100644 --- a/fs/xfs/xfs_dir2_data.c +++ b/fs/xfs/xfs_dir2_data.c @@ -29,14 +29,12 @@ #include "xfs_dinode.h" #include "xfs_inode.h" #include "xfs_dir2_format.h" +#include "xfs_dir2.h" #include "xfs_dir2_priv.h" #include "xfs_error.h" #include "xfs_buf_item.h" #include "xfs_cksum.h" -STATIC xfs_dir2_data_free_t * -xfs_dir2_data_freefind(xfs_dir2_data_hdr_t *hdr, xfs_dir2_data_unused_t *dup); - /* * Check the consistency of the data block. * The input can also be a block-format directory. @@ -149,8 +147,10 @@ __xfs_dir3_data_check( XFS_WANT_CORRUPTED_RETURN( !xfs_dir_ino_validate(mp, be64_to_cpu(dep->inumber))); XFS_WANT_CORRUPTED_RETURN( - be16_to_cpu(*xfs_dir2_data_entry_tag_p(dep)) == + be16_to_cpu(*xfs_dir3_data_entry_tag_p(mp, dep)) == (char *)dep - (char *)hdr); + XFS_WANT_CORRUPTED_RETURN( + xfs_dir3_dirent_get_ftype(mp, dep) < XFS_DIR3_FT_MAX); count++; lastfree = 0; if (hdr->magic == cpu_to_be32(XFS_DIR2_BLOCK_MAGIC) || @@ -168,7 +168,7 @@ __xfs_dir3_data_check( } XFS_WANT_CORRUPTED_RETURN(i < be32_to_cpu(btp->count)); } - p += xfs_dir2_data_entsize(dep->namelen); + p += xfs_dir3_data_entsize(mp, dep->namelen); } /* * Need to have seen all the entries and all the bestfree slots. @@ -325,7 +325,7 @@ xfs_dir3_data_readahead( * Given a data block and an unused entry from that block, * return the bestfree entry if any that corresponds to it. */ -STATIC xfs_dir2_data_free_t * +xfs_dir2_data_free_t * xfs_dir2_data_freefind( xfs_dir2_data_hdr_t *hdr, /* data block */ xfs_dir2_data_unused_t *dup) /* data unused entry */ @@ -333,7 +333,7 @@ xfs_dir2_data_freefind( xfs_dir2_data_free_t *dfp; /* bestfree entry */ xfs_dir2_data_aoff_t off; /* offset value needed */ struct xfs_dir2_data_free *bf; -#if defined(DEBUG) && defined(__KERNEL__) +#ifdef DEBUG int matched; /* matched the value */ int seenzero; /* saw a 0 bestfree entry */ #endif @@ -341,7 +341,7 @@ xfs_dir2_data_freefind( off = (xfs_dir2_data_aoff_t)((char *)dup - (char *)hdr); bf = xfs_dir3_data_bestfree_p(hdr); -#if defined(DEBUG) && defined(__KERNEL__) +#ifdef DEBUG /* * Validate some consistency in the bestfree table. * Check order, non-overlapping entries, and if we find the @@ -538,8 +538,8 @@ xfs_dir2_data_freescan( else { dep = (xfs_dir2_data_entry_t *)p; ASSERT((char *)dep - (char *)hdr == - be16_to_cpu(*xfs_dir2_data_entry_tag_p(dep))); - p += xfs_dir2_data_entsize(dep->namelen); + be16_to_cpu(*xfs_dir3_data_entry_tag_p(mp, dep))); + p += xfs_dir3_data_entsize(mp, dep->namelen); } } } @@ -629,7 +629,8 @@ xfs_dir2_data_log_entry( struct xfs_buf *bp, xfs_dir2_data_entry_t *dep) /* data entry pointer */ { - xfs_dir2_data_hdr_t *hdr = bp->b_addr; + struct xfs_dir2_data_hdr *hdr = bp->b_addr; + struct xfs_mount *mp = tp->t_mountp; ASSERT(hdr->magic == cpu_to_be32(XFS_DIR2_DATA_MAGIC) || hdr->magic == cpu_to_be32(XFS_DIR3_DATA_MAGIC) || @@ -637,7 +638,7 @@ xfs_dir2_data_log_entry( hdr->magic == cpu_to_be32(XFS_DIR3_BLOCK_MAGIC)); xfs_trans_log_buf(tp, bp, (uint)((char *)dep - (char *)hdr), - (uint)((char *)(xfs_dir2_data_entry_tag_p(dep) + 1) - + (uint)((char *)(xfs_dir3_data_entry_tag_p(mp, dep) + 1) - (char *)hdr - 1)); } diff --git a/fs/xfs/xfs_dir2_format.h b/fs/xfs/xfs_dir2_format.h index 7826782b..a0961a6 100644 --- a/fs/xfs/xfs_dir2_format.h +++ b/fs/xfs/xfs_dir2_format.h @@ -69,6 +69,23 @@ #define XFS_DIR3_FREE_MAGIC 0x58444633 /* XDF3: free index blocks */ /* + * Dirents in version 3 directories have a file type field. Additions to this + * list are an on-disk format change, requiring feature bits. Valid values + * are as follows: + */ +#define XFS_DIR3_FT_UNKNOWN 0 +#define XFS_DIR3_FT_REG_FILE 1 +#define XFS_DIR3_FT_DIR 2 +#define XFS_DIR3_FT_CHRDEV 3 +#define XFS_DIR3_FT_BLKDEV 4 +#define XFS_DIR3_FT_FIFO 5 +#define XFS_DIR3_FT_SOCK 6 +#define XFS_DIR3_FT_SYMLINK 7 +#define XFS_DIR3_FT_WHT 8 + +#define XFS_DIR3_FT_MAX 9 + +/* * Byte offset in data block and shortform entry. */ typedef __uint16_t xfs_dir2_data_off_t; @@ -138,6 +155,9 @@ typedef struct xfs_dir2_sf_entry { xfs_dir2_sf_off_t offset; /* saved offset */ __u8 name[]; /* name, variable size */ /* + * A single byte containing the file type field follows the inode + * number for version 3 directory entries. + * * A xfs_dir2_ino8_t or xfs_dir2_ino4_t follows here, at a * variable offset after the name. */ @@ -162,16 +182,6 @@ xfs_dir2_sf_put_offset(xfs_dir2_sf_entry_t *sfep, xfs_dir2_data_aoff_t off) put_unaligned_be16(off, &sfep->offset.i); } -static inline int -xfs_dir2_sf_entsize(struct xfs_dir2_sf_hdr *hdr, int len) -{ - return sizeof(struct xfs_dir2_sf_entry) + /* namelen + offset */ - len + /* name */ - (hdr->i8count ? /* ino */ - sizeof(xfs_dir2_ino8_t) : - sizeof(xfs_dir2_ino4_t)); -} - static inline struct xfs_dir2_sf_entry * xfs_dir2_sf_firstentry(struct xfs_dir2_sf_hdr *hdr) { @@ -179,14 +189,78 @@ xfs_dir2_sf_firstentry(struct xfs_dir2_sf_hdr *hdr) ((char *)hdr + xfs_dir2_sf_hdr_size(hdr->i8count)); } +static inline int +xfs_dir3_sf_entsize( + struct xfs_mount *mp, + struct xfs_dir2_sf_hdr *hdr, + int len) +{ + int count = sizeof(struct xfs_dir2_sf_entry); /* namelen + offset */ + + count += len; /* name */ + count += hdr->i8count ? sizeof(xfs_dir2_ino8_t) : + sizeof(xfs_dir2_ino4_t); /* ino # */ + if (xfs_sb_version_hasftype(&mp->m_sb)) + count += sizeof(__uint8_t); /* file type */ + return count; +} + static inline struct xfs_dir2_sf_entry * -xfs_dir2_sf_nextentry(struct xfs_dir2_sf_hdr *hdr, - struct xfs_dir2_sf_entry *sfep) +xfs_dir3_sf_nextentry( + struct xfs_mount *mp, + struct xfs_dir2_sf_hdr *hdr, + struct xfs_dir2_sf_entry *sfep) { return (struct xfs_dir2_sf_entry *) - ((char *)sfep + xfs_dir2_sf_entsize(hdr, sfep->namelen)); + ((char *)sfep + xfs_dir3_sf_entsize(mp, hdr, sfep->namelen)); } +/* + * in dir3 shortform directories, the file type field is stored at a variable + * offset after the inode number. Because it's only a single byte, endian + * conversion is not necessary. + */ +static inline __uint8_t * +xfs_dir3_sfe_ftypep( + struct xfs_dir2_sf_hdr *hdr, + struct xfs_dir2_sf_entry *sfep) +{ + return (__uint8_t *)&sfep->name[sfep->namelen]; +} + +static inline __uint8_t +xfs_dir3_sfe_get_ftype( + struct xfs_mount *mp, + struct xfs_dir2_sf_hdr *hdr, + struct xfs_dir2_sf_entry *sfep) +{ + __uint8_t *ftp; + + if (!xfs_sb_version_hasftype(&mp->m_sb)) + return XFS_DIR3_FT_UNKNOWN; + + ftp = xfs_dir3_sfe_ftypep(hdr, sfep); + if (*ftp >= XFS_DIR3_FT_MAX) + return XFS_DIR3_FT_UNKNOWN; + return *ftp; +} + +static inline void +xfs_dir3_sfe_put_ftype( + struct xfs_mount *mp, + struct xfs_dir2_sf_hdr *hdr, + struct xfs_dir2_sf_entry *sfep, + __uint8_t ftype) +{ + __uint8_t *ftp; + + ASSERT(ftype < XFS_DIR3_FT_MAX); + + if (!xfs_sb_version_hasftype(&mp->m_sb)) + return; + ftp = xfs_dir3_sfe_ftypep(hdr, sfep); + *ftp = ftype; +} /* * Data block structures. @@ -286,12 +360,18 @@ xfs_dir3_data_bestfree_p(struct xfs_dir2_data_hdr *hdr) * Active entry in a data block. * * Aligned to 8 bytes. After the variable length name field there is a - * 2 byte tag field, which can be accessed using xfs_dir2_data_entry_tag_p. + * 2 byte tag field, which can be accessed using xfs_dir3_data_entry_tag_p. + * + * For dir3 structures, there is file type field between the name and the tag. + * This can only be manipulated by helper functions. It is packed hard against + * the end of the name so any padding for rounding is between the file type and + * the tag. */ typedef struct xfs_dir2_data_entry { __be64 inumber; /* inode number */ __u8 namelen; /* name length */ __u8 name[]; /* name bytes, no null */ + /* __u8 filetype; */ /* type of inode we point to */ /* __be16 tag; */ /* starting offset of us */ } xfs_dir2_data_entry_t; @@ -311,20 +391,67 @@ typedef struct xfs_dir2_data_unused { /* * Size of a data entry. */ -static inline int xfs_dir2_data_entsize(int n) +static inline int +__xfs_dir3_data_entsize( + bool ftype, + int n) { - return (int)roundup(offsetof(struct xfs_dir2_data_entry, name[0]) + n + - (uint)sizeof(xfs_dir2_data_off_t), XFS_DIR2_DATA_ALIGN); + int size = offsetof(struct xfs_dir2_data_entry, name[0]); + + size += n; + size += sizeof(xfs_dir2_data_off_t); + if (ftype) + size += sizeof(__uint8_t); + return roundup(size, XFS_DIR2_DATA_ALIGN); +} +static inline int +xfs_dir3_data_entsize( + struct xfs_mount *mp, + int n) +{ + bool ftype = xfs_sb_version_hasftype(&mp->m_sb) ? true : false; + return __xfs_dir3_data_entsize(ftype, n); +} + +static inline __uint8_t +xfs_dir3_dirent_get_ftype( + struct xfs_mount *mp, + struct xfs_dir2_data_entry *dep) +{ + if (xfs_sb_version_hasftype(&mp->m_sb)) { + __uint8_t type = dep->name[dep->namelen]; + + ASSERT(type < XFS_DIR3_FT_MAX); + if (type < XFS_DIR3_FT_MAX) + return type; + + } + return XFS_DIR3_FT_UNKNOWN; +} + +static inline void +xfs_dir3_dirent_put_ftype( + struct xfs_mount *mp, + struct xfs_dir2_data_entry *dep, + __uint8_t type) +{ + ASSERT(type < XFS_DIR3_FT_MAX); + ASSERT(dep->namelen != 0); + + if (xfs_sb_version_hasftype(&mp->m_sb)) + dep->name[dep->namelen] = type; } /* * Pointer to an entry's tag word. */ static inline __be16 * -xfs_dir2_data_entry_tag_p(struct xfs_dir2_data_entry *dep) +xfs_dir3_data_entry_tag_p( + struct xfs_mount *mp, + struct xfs_dir2_data_entry *dep) { return (__be16 *)((char *)dep + - xfs_dir2_data_entsize(dep->namelen) - sizeof(__be16)); + xfs_dir3_data_entsize(mp, dep->namelen) - sizeof(__be16)); } /* @@ -375,13 +502,17 @@ xfs_dir3_data_unused_p(struct xfs_dir2_data_hdr *hdr) * data block header because the sfe embeds the block offset of the entry into * it so that it doesn't change when format conversion occurs. Bad Things Happen * if we don't follow this rule. + * + * XXX: there is scope for significant optimisation of the logic here. Right + * now we are checking for "dir3 format" over and over again. Ideally we should + * only do it once for each operation. */ #define XFS_DIR3_DATA_DOT_OFFSET(mp) \ xfs_dir3_data_hdr_size(xfs_sb_version_hascrc(&(mp)->m_sb)) #define XFS_DIR3_DATA_DOTDOT_OFFSET(mp) \ - (XFS_DIR3_DATA_DOT_OFFSET(mp) + xfs_dir2_data_entsize(1)) + (XFS_DIR3_DATA_DOT_OFFSET(mp) + xfs_dir3_data_entsize(mp, 1)) #define XFS_DIR3_DATA_FIRST_OFFSET(mp) \ - (XFS_DIR3_DATA_DOTDOT_OFFSET(mp) + xfs_dir2_data_entsize(2)) + (XFS_DIR3_DATA_DOTDOT_OFFSET(mp) + xfs_dir3_data_entsize(mp, 2)) static inline xfs_dir2_data_aoff_t xfs_dir3_data_dot_offset(struct xfs_dir2_data_hdr *hdr) @@ -392,13 +523,19 @@ xfs_dir3_data_dot_offset(struct xfs_dir2_data_hdr *hdr) static inline xfs_dir2_data_aoff_t xfs_dir3_data_dotdot_offset(struct xfs_dir2_data_hdr *hdr) { - return xfs_dir3_data_dot_offset(hdr) + xfs_dir2_data_entsize(1); + bool dir3 = hdr->magic == cpu_to_be32(XFS_DIR3_DATA_MAGIC) || + hdr->magic == cpu_to_be32(XFS_DIR3_BLOCK_MAGIC); + return xfs_dir3_data_dot_offset(hdr) + + __xfs_dir3_data_entsize(dir3, 1); } static inline xfs_dir2_data_aoff_t xfs_dir3_data_first_offset(struct xfs_dir2_data_hdr *hdr) { - return xfs_dir3_data_dotdot_offset(hdr) + xfs_dir2_data_entsize(2); + bool dir3 = hdr->magic == cpu_to_be32(XFS_DIR3_DATA_MAGIC) || + hdr->magic == cpu_to_be32(XFS_DIR3_BLOCK_MAGIC); + return xfs_dir3_data_dotdot_offset(hdr) + + __xfs_dir3_data_entsize(dir3, 2); } /* @@ -519,6 +656,9 @@ struct xfs_dir3_leaf { #define XFS_DIR3_LEAF_CRC_OFF offsetof(struct xfs_dir3_leaf_hdr, info.crc) +extern void xfs_dir3_leaf_hdr_from_disk(struct xfs_dir3_icleaf_hdr *to, + struct xfs_dir2_leaf *from); + static inline int xfs_dir3_leaf_hdr_size(struct xfs_dir2_leaf *lp) { diff --git a/fs/xfs/xfs_dir2_leaf.c b/fs/xfs/xfs_dir2_leaf.c index 2aed25c..08984ee 100644 --- a/fs/xfs/xfs_dir2_leaf.c +++ b/fs/xfs/xfs_dir2_leaf.c @@ -31,6 +31,7 @@ #include "xfs_inode.h" #include "xfs_bmap.h" #include "xfs_dir2_format.h" +#include "xfs_dir2.h" #include "xfs_dir2_priv.h" #include "xfs_error.h" #include "xfs_trace.h" @@ -695,7 +696,7 @@ xfs_dir2_leaf_addname( ents = xfs_dir3_leaf_ents_p(leaf); xfs_dir3_leaf_hdr_from_disk(&leafhdr, leaf); bestsp = xfs_dir2_leaf_bests_p(ltp); - length = xfs_dir2_data_entsize(args->namelen); + length = xfs_dir3_data_entsize(mp, args->namelen); /* * See if there are any entries with the same hash value @@ -896,7 +897,8 @@ xfs_dir2_leaf_addname( dep->inumber = cpu_to_be64(args->inumber); dep->namelen = args->namelen; memcpy(dep->name, args->name, dep->namelen); - tagp = xfs_dir2_data_entry_tag_p(dep); + xfs_dir3_dirent_put_ftype(mp, dep, args->filetype); + tagp = xfs_dir3_data_entry_tag_p(mp, dep); *tagp = cpu_to_be16((char *)dep - (char *)hdr); /* * Need to scan fix up the bestfree table. @@ -1083,396 +1085,6 @@ xfs_dir3_leaf_compact_x1( *highstalep = highstale; } -struct xfs_dir2_leaf_map_info { - xfs_extlen_t map_blocks; /* number of fsbs in map */ - xfs_dablk_t map_off; /* last mapped file offset */ - int map_size; /* total entries in *map */ - int map_valid; /* valid entries in *map */ - int nmap; /* mappings to ask xfs_bmapi */ - xfs_dir2_db_t curdb; /* db for current block */ - int ra_current; /* number of read-ahead blks */ - int ra_index; /* *map index for read-ahead */ - int ra_offset; /* map entry offset for ra */ - int ra_want; /* readahead count wanted */ - struct xfs_bmbt_irec map[]; /* map vector for blocks */ -}; - -STATIC int -xfs_dir2_leaf_readbuf( - struct xfs_inode *dp, - size_t bufsize, - struct xfs_dir2_leaf_map_info *mip, - xfs_dir2_off_t *curoff, - struct xfs_buf **bpp) -{ - struct xfs_mount *mp = dp->i_mount; - struct xfs_buf *bp = *bpp; - struct xfs_bmbt_irec *map = mip->map; - struct blk_plug plug; - int error = 0; - int length; - int i; - int j; - - /* - * If we have a buffer, we need to release it and - * take it out of the mapping. - */ - - if (bp) { - xfs_trans_brelse(NULL, bp); - bp = NULL; - mip->map_blocks -= mp->m_dirblkfsbs; - /* - * Loop to get rid of the extents for the - * directory block. - */ - for (i = mp->m_dirblkfsbs; i > 0; ) { - j = min_t(int, map->br_blockcount, i); - map->br_blockcount -= j; - map->br_startblock += j; - map->br_startoff += j; - /* - * If mapping is done, pitch it from - * the table. - */ - if (!map->br_blockcount && --mip->map_valid) - memmove(&map[0], &map[1], - sizeof(map[0]) * mip->map_valid); - i -= j; - } - } - - /* - * Recalculate the readahead blocks wanted. - */ - mip->ra_want = howmany(bufsize + mp->m_dirblksize, - mp->m_sb.sb_blocksize) - 1; - ASSERT(mip->ra_want >= 0); - - /* - * If we don't have as many as we want, and we haven't - * run out of data blocks, get some more mappings. - */ - if (1 + mip->ra_want > mip->map_blocks && - mip->map_off < xfs_dir2_byte_to_da(mp, XFS_DIR2_LEAF_OFFSET)) { - /* - * Get more bmaps, fill in after the ones - * we already have in the table. - */ - mip->nmap = mip->map_size - mip->map_valid; - error = xfs_bmapi_read(dp, mip->map_off, - xfs_dir2_byte_to_da(mp, XFS_DIR2_LEAF_OFFSET) - - mip->map_off, - &map[mip->map_valid], &mip->nmap, 0); - - /* - * Don't know if we should ignore this or try to return an - * error. The trouble with returning errors is that readdir - * will just stop without actually passing the error through. - */ - if (error) - goto out; /* XXX */ - - /* - * If we got all the mappings we asked for, set the final map - * offset based on the last bmap value received. Otherwise, - * we've reached the end. - */ - if (mip->nmap == mip->map_size - mip->map_valid) { - i = mip->map_valid + mip->nmap - 1; - mip->map_off = map[i].br_startoff + map[i].br_blockcount; - } else - mip->map_off = xfs_dir2_byte_to_da(mp, - XFS_DIR2_LEAF_OFFSET); - - /* - * Look for holes in the mapping, and eliminate them. Count up - * the valid blocks. - */ - for (i = mip->map_valid; i < mip->map_valid + mip->nmap; ) { - if (map[i].br_startblock == HOLESTARTBLOCK) { - mip->nmap--; - length = mip->map_valid + mip->nmap - i; - if (length) - memmove(&map[i], &map[i + 1], - sizeof(map[i]) * length); - } else { - mip->map_blocks += map[i].br_blockcount; - i++; - } - } - mip->map_valid += mip->nmap; - } - - /* - * No valid mappings, so no more data blocks. - */ - if (!mip->map_valid) { - *curoff = xfs_dir2_da_to_byte(mp, mip->map_off); - goto out; - } - - /* - * Read the directory block starting at the first mapping. - */ - mip->curdb = xfs_dir2_da_to_db(mp, map->br_startoff); - error = xfs_dir3_data_read(NULL, dp, map->br_startoff, - map->br_blockcount >= mp->m_dirblkfsbs ? - XFS_FSB_TO_DADDR(mp, map->br_startblock) : -1, &bp); - - /* - * Should just skip over the data block instead of giving up. - */ - if (error) - goto out; /* XXX */ - - /* - * Adjust the current amount of read-ahead: we just read a block that - * was previously ra. - */ - if (mip->ra_current) - mip->ra_current -= mp->m_dirblkfsbs; - - /* - * Do we need more readahead? - */ - blk_start_plug(&plug); - for (mip->ra_index = mip->ra_offset = i = 0; - mip->ra_want > mip->ra_current && i < mip->map_blocks; - i += mp->m_dirblkfsbs) { - ASSERT(mip->ra_index < mip->map_valid); - /* - * Read-ahead a contiguous directory block. - */ - if (i > mip->ra_current && - map[mip->ra_index].br_blockcount >= mp->m_dirblkfsbs) { - xfs_dir3_data_readahead(NULL, dp, - map[mip->ra_index].br_startoff + mip->ra_offset, - XFS_FSB_TO_DADDR(mp, - map[mip->ra_index].br_startblock + - mip->ra_offset)); - mip->ra_current = i; - } - - /* - * Read-ahead a non-contiguous directory block. This doesn't - * use our mapping, but this is a very rare case. - */ - else if (i > mip->ra_current) { - xfs_dir3_data_readahead(NULL, dp, - map[mip->ra_index].br_startoff + - mip->ra_offset, -1); - mip->ra_current = i; - } - - /* - * Advance offset through the mapping table. - */ - for (j = 0; j < mp->m_dirblkfsbs; j++) { - /* - * The rest of this extent but not more than a dir - * block. - */ - length = min_t(int, mp->m_dirblkfsbs, - map[mip->ra_index].br_blockcount - - mip->ra_offset); - j += length; - mip->ra_offset += length; - - /* - * Advance to the next mapping if this one is used up. - */ - if (mip->ra_offset == map[mip->ra_index].br_blockcount) { - mip->ra_offset = 0; - mip->ra_index++; - } - } - } - blk_finish_plug(&plug); - -out: - *bpp = bp; - return error; -} - -/* - * Getdents (readdir) for leaf and node directories. - * This reads the data blocks only, so is the same for both forms. - */ -int /* error */ -xfs_dir2_leaf_getdents( - xfs_inode_t *dp, /* incore directory inode */ - struct dir_context *ctx, - size_t bufsize) -{ - struct xfs_buf *bp = NULL; /* data block buffer */ - xfs_dir2_data_hdr_t *hdr; /* data block header */ - xfs_dir2_data_entry_t *dep; /* data entry */ - xfs_dir2_data_unused_t *dup; /* unused entry */ - int error = 0; /* error return value */ - int length; /* temporary length value */ - xfs_mount_t *mp; /* filesystem mount point */ - int byteoff; /* offset in current block */ - xfs_dir2_off_t curoff; /* current overall offset */ - xfs_dir2_off_t newoff; /* new curoff after new blk */ - char *ptr = NULL; /* pointer to current data */ - struct xfs_dir2_leaf_map_info *map_info; - - /* - * If the offset is at or past the largest allowed value, - * give up right away. - */ - if (ctx->pos >= XFS_DIR2_MAX_DATAPTR) - return 0; - - mp = dp->i_mount; - - /* - * Set up to bmap a number of blocks based on the caller's - * buffer size, the directory block size, and the filesystem - * block size. - */ - length = howmany(bufsize + mp->m_dirblksize, - mp->m_sb.sb_blocksize); - map_info = kmem_zalloc(offsetof(struct xfs_dir2_leaf_map_info, map) + - (length * sizeof(struct xfs_bmbt_irec)), - KM_SLEEP | KM_NOFS); - map_info->map_size = length; - - /* - * Inside the loop we keep the main offset value as a byte offset - * in the directory file. - */ - curoff = xfs_dir2_dataptr_to_byte(mp, ctx->pos); - - /* - * Force this conversion through db so we truncate the offset - * down to get the start of the data block. - */ - map_info->map_off = xfs_dir2_db_to_da(mp, - xfs_dir2_byte_to_db(mp, curoff)); - - /* - * Loop over directory entries until we reach the end offset. - * Get more blocks and readahead as necessary. - */ - while (curoff < XFS_DIR2_LEAF_OFFSET) { - /* - * If we have no buffer, or we're off the end of the - * current buffer, need to get another one. - */ - if (!bp || ptr >= (char *)bp->b_addr + mp->m_dirblksize) { - - error = xfs_dir2_leaf_readbuf(dp, bufsize, map_info, - &curoff, &bp); - if (error || !map_info->map_valid) - break; - - /* - * Having done a read, we need to set a new offset. - */ - newoff = xfs_dir2_db_off_to_byte(mp, map_info->curdb, 0); - /* - * Start of the current block. - */ - if (curoff < newoff) - curoff = newoff; - /* - * Make sure we're in the right block. - */ - else if (curoff > newoff) - ASSERT(xfs_dir2_byte_to_db(mp, curoff) == - map_info->curdb); - hdr = bp->b_addr; - xfs_dir3_data_check(dp, bp); - /* - * Find our position in the block. - */ - ptr = (char *)xfs_dir3_data_entry_p(hdr); - byteoff = xfs_dir2_byte_to_off(mp, curoff); - /* - * Skip past the header. - */ - if (byteoff == 0) - curoff += xfs_dir3_data_entry_offset(hdr); - /* - * Skip past entries until we reach our offset. - */ - else { - while ((char *)ptr - (char *)hdr < byteoff) { - dup = (xfs_dir2_data_unused_t *)ptr; - - if (be16_to_cpu(dup->freetag) - == XFS_DIR2_DATA_FREE_TAG) { - - length = be16_to_cpu(dup->length); - ptr += length; - continue; - } - dep = (xfs_dir2_data_entry_t *)ptr; - length = - xfs_dir2_data_entsize(dep->namelen); - ptr += length; - } - /* - * Now set our real offset. - */ - curoff = - xfs_dir2_db_off_to_byte(mp, - xfs_dir2_byte_to_db(mp, curoff), - (char *)ptr - (char *)hdr); - if (ptr >= (char *)hdr + mp->m_dirblksize) { - continue; - } - } - } - /* - * We have a pointer to an entry. - * Is it a live one? - */ - dup = (xfs_dir2_data_unused_t *)ptr; - /* - * No, it's unused, skip over it. - */ - if (be16_to_cpu(dup->freetag) == XFS_DIR2_DATA_FREE_TAG) { - length = be16_to_cpu(dup->length); - ptr += length; - curoff += length; - continue; - } - - dep = (xfs_dir2_data_entry_t *)ptr; - length = xfs_dir2_data_entsize(dep->namelen); - - ctx->pos = xfs_dir2_byte_to_dataptr(mp, curoff) & 0x7fffffff; - if (!dir_emit(ctx, (char *)dep->name, dep->namelen, - be64_to_cpu(dep->inumber), DT_UNKNOWN)) - break; - - /* - * Advance to next entry in the block. - */ - ptr += length; - curoff += length; - /* bufsize may have just been a guess; don't go negative */ - bufsize = bufsize > length ? bufsize - length : 0; - } - - /* - * All done. Set output offset value to current offset. - */ - if (curoff > xfs_dir2_dataptr_to_byte(mp, XFS_DIR2_MAX_DATAPTR)) - ctx->pos = XFS_DIR2_MAX_DATAPTR & 0x7fffffff; - else - ctx->pos = xfs_dir2_byte_to_dataptr(mp, curoff) & 0x7fffffff; - kmem_free(map_info); - if (bp) - xfs_trans_brelse(NULL, bp); - return error; -} - - /* * Log the bests entries indicated from a leaf1 block. */ @@ -1614,6 +1226,7 @@ xfs_dir2_leaf_lookup( * Return the found inode number & CI name if appropriate */ args->inumber = be64_to_cpu(dep->inumber); + args->filetype = xfs_dir3_dirent_get_ftype(dp->i_mount, dep); error = xfs_dir_cilookup_result(args, dep->name, dep->namelen); xfs_trans_brelse(tp, dbp); xfs_trans_brelse(tp, lbp); @@ -1816,7 +1429,7 @@ xfs_dir2_leaf_removename( */ xfs_dir2_data_make_free(tp, dbp, (xfs_dir2_data_aoff_t)((char *)dep - (char *)hdr), - xfs_dir2_data_entsize(dep->namelen), &needlog, &needscan); + xfs_dir3_data_entsize(mp, dep->namelen), &needlog, &needscan); /* * We just mark the leaf entry stale by putting a null in it. */ @@ -1944,6 +1557,7 @@ xfs_dir2_leaf_replace( * Put the new inode number in, log it. */ dep->inumber = cpu_to_be64(args->inumber); + xfs_dir3_dirent_put_ftype(dp->i_mount, dep, args->filetype); tp = args->trans; xfs_dir2_data_log_entry(tp, dbp, dep); xfs_dir3_leaf_check(dp->i_mount, lbp); @@ -1975,10 +1589,6 @@ xfs_dir2_leaf_search_hash( ents = xfs_dir3_leaf_ents_p(leaf); xfs_dir3_leaf_hdr_from_disk(&leafhdr, leaf); -#ifndef __KERNEL__ - if (!leafhdr.count) - return 0; -#endif /* * Note, the table cannot be empty, so we have to go through the loop. * Binary search the leaf entries looking for our hash value. diff --git a/fs/xfs/xfs_dir2_node.c b/fs/xfs/xfs_dir2_node.c index 2226a00..4c3dba7 100644 --- a/fs/xfs/xfs_dir2_node.c +++ b/fs/xfs/xfs_dir2_node.c @@ -30,6 +30,7 @@ #include "xfs_inode.h" #include "xfs_bmap.h" #include "xfs_dir2_format.h" +#include "xfs_dir2.h" #include "xfs_dir2_priv.h" #include "xfs_error.h" #include "xfs_trace.h" @@ -312,11 +313,13 @@ xfs_dir2_free_log_header( struct xfs_trans *tp, struct xfs_buf *bp) { +#ifdef DEBUG xfs_dir2_free_t *free; /* freespace structure */ free = bp->b_addr; ASSERT(free->hdr.magic == cpu_to_be32(XFS_DIR2_FREE_MAGIC) || free->hdr.magic == cpu_to_be32(XFS_DIR3_FREE_MAGIC)); +#endif xfs_trans_log_buf(tp, bp, 0, xfs_dir3_free_hdr_size(tp->t_mountp) - 1); } @@ -602,7 +605,7 @@ xfs_dir2_leafn_lookup_for_addname( ASSERT(free->hdr.magic == cpu_to_be32(XFS_DIR2_FREE_MAGIC) || free->hdr.magic == cpu_to_be32(XFS_DIR3_FREE_MAGIC)); } - length = xfs_dir2_data_entsize(args->namelen); + length = xfs_dir3_data_entsize(mp, args->namelen); /* * Loop over leaf entries with the right hash value. */ @@ -813,6 +816,7 @@ xfs_dir2_leafn_lookup_for_entry( xfs_trans_brelse(tp, state->extrablk.bp); args->cmpresult = cmp; args->inumber = be64_to_cpu(dep->inumber); + args->filetype = xfs_dir3_dirent_get_ftype(mp, dep); *indexp = index; state->extravalid = 1; state->extrablk.bp = curbp; @@ -1256,7 +1260,7 @@ xfs_dir2_leafn_remove( longest = be16_to_cpu(bf[0].length); needlog = needscan = 0; xfs_dir2_data_make_free(tp, dbp, off, - xfs_dir2_data_entsize(dep->namelen), &needlog, &needscan); + xfs_dir3_data_entsize(mp, dep->namelen), &needlog, &needscan); /* * Rescan the data block freespaces for bestfree. * Log the data block header if needed. @@ -1708,7 +1712,7 @@ xfs_dir2_node_addname_int( dp = args->dp; mp = dp->i_mount; tp = args->trans; - length = xfs_dir2_data_entsize(args->namelen); + length = xfs_dir3_data_entsize(mp, args->namelen); /* * If we came in with a freespace block that means that lookup * found an entry with our hash value. This is the freespace @@ -2004,7 +2008,8 @@ xfs_dir2_node_addname_int( dep->inumber = cpu_to_be64(args->inumber); dep->namelen = args->namelen; memcpy(dep->name, args->name, dep->namelen); - tagp = xfs_dir2_data_entry_tag_p(dep); + xfs_dir3_dirent_put_ftype(mp, dep, args->filetype); + tagp = xfs_dir3_data_entry_tag_p(mp, dep); *tagp = cpu_to_be16((char *)dep - (char *)hdr); xfs_dir2_data_log_entry(tp, dbp, dep); /* @@ -2224,6 +2229,7 @@ xfs_dir2_node_replace( * Fill in the new inode number and log the entry. */ dep->inumber = cpu_to_be64(inum); + xfs_dir3_dirent_put_ftype(state->mp, dep, args->filetype); xfs_dir2_data_log_entry(args->trans, state->extrablk.bp, dep); rval = 0; } diff --git a/fs/xfs/xfs_dir2_priv.h b/fs/xfs/xfs_dir2_priv.h index 0511cda..1bad84c 100644 --- a/fs/xfs/xfs_dir2_priv.h +++ b/fs/xfs/xfs_dir2_priv.h @@ -18,23 +18,26 @@ #ifndef __XFS_DIR2_PRIV_H__ #define __XFS_DIR2_PRIV_H__ +struct dir_context; + /* xfs_dir2.c */ extern int xfs_dir_ino_validate(struct xfs_mount *mp, xfs_ino_t ino); -extern int xfs_dir2_isblock(struct xfs_trans *tp, struct xfs_inode *dp, int *r); -extern int xfs_dir2_isleaf(struct xfs_trans *tp, struct xfs_inode *dp, int *r); extern int xfs_dir2_grow_inode(struct xfs_da_args *args, int space, xfs_dir2_db_t *dbp); -extern int xfs_dir2_shrink_inode(struct xfs_da_args *args, xfs_dir2_db_t db, - struct xfs_buf *bp); extern int xfs_dir_cilookup_result(struct xfs_da_args *args, const unsigned char *name, int len); -/* xfs_dir2_block.c */ -extern const struct xfs_buf_ops xfs_dir3_block_buf_ops; +#define S_SHIFT 12 +extern const unsigned char xfs_mode_to_ftype[]; + +extern unsigned char xfs_dir3_get_dtype(struct xfs_mount *mp, + __uint8_t filetype); + +/* xfs_dir2_block.c */ +extern int xfs_dir3_block_read(struct xfs_trans *tp, struct xfs_inode *dp, + struct xfs_buf **bpp); extern int xfs_dir2_block_addname(struct xfs_da_args *args); -extern int xfs_dir2_block_getdents(struct xfs_inode *dp, - struct dir_context *ctx); extern int xfs_dir2_block_lookup(struct xfs_da_args *args); extern int xfs_dir2_block_removename(struct xfs_da_args *args); extern int xfs_dir2_block_replace(struct xfs_da_args *args); @@ -48,9 +51,6 @@ extern int xfs_dir2_leaf_to_block(struct xfs_da_args *args, #define xfs_dir3_data_check(dp,bp) #endif -extern const struct xfs_buf_ops xfs_dir3_data_buf_ops; -extern const struct xfs_buf_ops xfs_dir3_free_buf_ops; - extern int __xfs_dir3_data_check(struct xfs_inode *dp, struct xfs_buf *bp); extern int xfs_dir3_data_read(struct xfs_trans *tp, struct xfs_inode *dp, xfs_dablk_t bno, xfs_daddr_t mapped_bno, struct xfs_buf **bpp); @@ -60,27 +60,10 @@ extern int xfs_dir3_data_readahead(struct xfs_trans *tp, struct xfs_inode *dp, extern struct xfs_dir2_data_free * xfs_dir2_data_freeinsert(struct xfs_dir2_data_hdr *hdr, struct xfs_dir2_data_unused *dup, int *loghead); -extern void xfs_dir2_data_freescan(struct xfs_mount *mp, - struct xfs_dir2_data_hdr *hdr, int *loghead); extern int xfs_dir3_data_init(struct xfs_da_args *args, xfs_dir2_db_t blkno, struct xfs_buf **bpp); -extern void xfs_dir2_data_log_entry(struct xfs_trans *tp, struct xfs_buf *bp, - struct xfs_dir2_data_entry *dep); -extern void xfs_dir2_data_log_header(struct xfs_trans *tp, - struct xfs_buf *bp); -extern void xfs_dir2_data_log_unused(struct xfs_trans *tp, struct xfs_buf *bp, - struct xfs_dir2_data_unused *dup); -extern void xfs_dir2_data_make_free(struct xfs_trans *tp, struct xfs_buf *bp, - xfs_dir2_data_aoff_t offset, xfs_dir2_data_aoff_t len, - int *needlogp, int *needscanp); -extern void xfs_dir2_data_use_free(struct xfs_trans *tp, struct xfs_buf *bp, - struct xfs_dir2_data_unused *dup, xfs_dir2_data_aoff_t offset, - xfs_dir2_data_aoff_t len, int *needlogp, int *needscanp); /* xfs_dir2_leaf.c */ -extern const struct xfs_buf_ops xfs_dir3_leaf1_buf_ops; -extern const struct xfs_buf_ops xfs_dir3_leafn_buf_ops; - extern int xfs_dir3_leafn_read(struct xfs_trans *tp, struct xfs_inode *dp, xfs_dablk_t fbno, xfs_daddr_t mappedbno, struct xfs_buf **bpp); extern int xfs_dir2_block_to_leaf(struct xfs_da_args *args, @@ -91,8 +74,6 @@ extern void xfs_dir3_leaf_compact(struct xfs_da_args *args, extern void xfs_dir3_leaf_compact_x1(struct xfs_dir3_icleaf_hdr *leafhdr, struct xfs_dir2_leaf_entry *ents, int *indexp, int *lowstalep, int *highstalep, int *lowlogp, int *highlogp); -extern int xfs_dir2_leaf_getdents(struct xfs_inode *dp, struct dir_context *ctx, - size_t bufsize); extern int xfs_dir3_leaf_get_buf(struct xfs_da_args *args, xfs_dir2_db_t bno, struct xfs_buf **bpp, __uint16_t magic); extern void xfs_dir3_leaf_log_ents(struct xfs_trans *tp, struct xfs_buf *bp, @@ -144,18 +125,18 @@ extern int xfs_dir2_free_read(struct xfs_trans *tp, struct xfs_inode *dp, xfs_dablk_t fbno, struct xfs_buf **bpp); /* xfs_dir2_sf.c */ -extern xfs_ino_t xfs_dir2_sf_get_parent_ino(struct xfs_dir2_sf_hdr *sfp); -extern xfs_ino_t xfs_dir2_sfe_get_ino(struct xfs_dir2_sf_hdr *sfp, - struct xfs_dir2_sf_entry *sfep); extern int xfs_dir2_block_sfsize(struct xfs_inode *dp, struct xfs_dir2_data_hdr *block, struct xfs_dir2_sf_hdr *sfhp); extern int xfs_dir2_block_to_sf(struct xfs_da_args *args, struct xfs_buf *bp, int size, xfs_dir2_sf_hdr_t *sfhp); extern int xfs_dir2_sf_addname(struct xfs_da_args *args); extern int xfs_dir2_sf_create(struct xfs_da_args *args, xfs_ino_t pino); -extern int xfs_dir2_sf_getdents(struct xfs_inode *dp, struct dir_context *ctx); extern int xfs_dir2_sf_lookup(struct xfs_da_args *args); extern int xfs_dir2_sf_removename(struct xfs_da_args *args); extern int xfs_dir2_sf_replace(struct xfs_da_args *args); +/* xfs_dir2_readdir.c */ +extern int xfs_readdir(struct xfs_inode *dp, struct dir_context *ctx, + size_t bufsize); + #endif /* __XFS_DIR2_PRIV_H__ */ diff --git a/fs/xfs/xfs_dir2_readdir.c b/fs/xfs/xfs_dir2_readdir.c new file mode 100644 index 0000000..8993ec1 --- /dev/null +++ b/fs/xfs/xfs_dir2_readdir.c @@ -0,0 +1,695 @@ +/* + * Copyright (c) 2000-2005 Silicon Graphics, Inc. + * Copyright (c) 2013 Red Hat, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include "xfs.h" +#include "xfs_fs.h" +#include "xfs_types.h" +#include "xfs_bit.h" +#include "xfs_log.h" +#include "xfs_trans.h" +#include "xfs_sb.h" +#include "xfs_ag.h" +#include "xfs_mount.h" +#include "xfs_da_btree.h" +#include "xfs_bmap_btree.h" +#include "xfs_dinode.h" +#include "xfs_inode.h" +#include "xfs_dir2_format.h" +#include "xfs_dir2.h" +#include "xfs_dir2_priv.h" +#include "xfs_error.h" +#include "xfs_trace.h" +#include "xfs_bmap.h" + +/* + * Directory file type support functions + */ +static unsigned char xfs_dir3_filetype_table[] = { + DT_UNKNOWN, DT_REG, DT_DIR, DT_CHR, DT_BLK, + DT_FIFO, DT_SOCK, DT_LNK, DT_WHT, +}; + +unsigned char +xfs_dir3_get_dtype( + struct xfs_mount *mp, + __uint8_t filetype) +{ + if (!xfs_sb_version_hasftype(&mp->m_sb)) + return DT_UNKNOWN; + + if (filetype >= XFS_DIR3_FT_MAX) + return DT_UNKNOWN; + + return xfs_dir3_filetype_table[filetype]; +} +/* + * @mode, if set, indicates that the type field needs to be set up. + * This uses the transformation from file mode to DT_* as defined in linux/fs.h + * for file type specification. This will be propagated into the directory + * structure if appropriate for the given operation and filesystem config. + */ +const unsigned char xfs_mode_to_ftype[S_IFMT >> S_SHIFT] = { + [0] = XFS_DIR3_FT_UNKNOWN, + [S_IFREG >> S_SHIFT] = XFS_DIR3_FT_REG_FILE, + [S_IFDIR >> S_SHIFT] = XFS_DIR3_FT_DIR, + [S_IFCHR >> S_SHIFT] = XFS_DIR3_FT_CHRDEV, + [S_IFBLK >> S_SHIFT] = XFS_DIR3_FT_BLKDEV, + [S_IFIFO >> S_SHIFT] = XFS_DIR3_FT_FIFO, + [S_IFSOCK >> S_SHIFT] = XFS_DIR3_FT_SOCK, + [S_IFLNK >> S_SHIFT] = XFS_DIR3_FT_SYMLINK, +}; + +STATIC int +xfs_dir2_sf_getdents( + xfs_inode_t *dp, /* incore directory inode */ + struct dir_context *ctx) +{ + int i; /* shortform entry number */ + xfs_mount_t *mp; /* filesystem mount point */ + xfs_dir2_dataptr_t off; /* current entry's offset */ + xfs_dir2_sf_entry_t *sfep; /* shortform directory entry */ + xfs_dir2_sf_hdr_t *sfp; /* shortform structure */ + xfs_dir2_dataptr_t dot_offset; + xfs_dir2_dataptr_t dotdot_offset; + xfs_ino_t ino; + + mp = dp->i_mount; + + ASSERT(dp->i_df.if_flags & XFS_IFINLINE); + /* + * Give up if the directory is way too short. + */ + if (dp->i_d.di_size < offsetof(xfs_dir2_sf_hdr_t, parent)) { + ASSERT(XFS_FORCED_SHUTDOWN(mp)); + return XFS_ERROR(EIO); + } + + ASSERT(dp->i_df.if_bytes == dp->i_d.di_size); + ASSERT(dp->i_df.if_u1.if_data != NULL); + + sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data; + + ASSERT(dp->i_d.di_size >= xfs_dir2_sf_hdr_size(sfp->i8count)); + + /* + * If the block number in the offset is out of range, we're done. + */ + if (xfs_dir2_dataptr_to_db(mp, ctx->pos) > mp->m_dirdatablk) + return 0; + + /* + * Precalculate offsets for . and .. as we will always need them. + * + * XXX(hch): the second argument is sometimes 0 and sometimes + * mp->m_dirdatablk. + */ + dot_offset = xfs_dir2_db_off_to_dataptr(mp, mp->m_dirdatablk, + XFS_DIR3_DATA_DOT_OFFSET(mp)); + dotdot_offset = xfs_dir2_db_off_to_dataptr(mp, mp->m_dirdatablk, + XFS_DIR3_DATA_DOTDOT_OFFSET(mp)); + + /* + * Put . entry unless we're starting past it. + */ + if (ctx->pos <= dot_offset) { + ctx->pos = dot_offset & 0x7fffffff; + if (!dir_emit(ctx, ".", 1, dp->i_ino, DT_DIR)) + return 0; + } + + /* + * Put .. entry unless we're starting past it. + */ + if (ctx->pos <= dotdot_offset) { + ino = xfs_dir2_sf_get_parent_ino(sfp); + ctx->pos = dotdot_offset & 0x7fffffff; + if (!dir_emit(ctx, "..", 2, ino, DT_DIR)) + return 0; + } + + /* + * Loop while there are more entries and put'ing works. + */ + sfep = xfs_dir2_sf_firstentry(sfp); + for (i = 0; i < sfp->count; i++) { + __uint8_t filetype; + + off = xfs_dir2_db_off_to_dataptr(mp, mp->m_dirdatablk, + xfs_dir2_sf_get_offset(sfep)); + + if (ctx->pos > off) { + sfep = xfs_dir3_sf_nextentry(mp, sfp, sfep); + continue; + } + + ino = xfs_dir3_sfe_get_ino(mp, sfp, sfep); + filetype = xfs_dir3_sfe_get_ftype(mp, sfp, sfep); + ctx->pos = off & 0x7fffffff; + if (!dir_emit(ctx, (char *)sfep->name, sfep->namelen, ino, + xfs_dir3_get_dtype(mp, filetype))) + return 0; + sfep = xfs_dir3_sf_nextentry(mp, sfp, sfep); + } + + ctx->pos = xfs_dir2_db_off_to_dataptr(mp, mp->m_dirdatablk + 1, 0) & + 0x7fffffff; + return 0; +} + +/* + * Readdir for block directories. + */ +STATIC int +xfs_dir2_block_getdents( + xfs_inode_t *dp, /* incore inode */ + struct dir_context *ctx) +{ + xfs_dir2_data_hdr_t *hdr; /* block header */ + struct xfs_buf *bp; /* buffer for block */ + xfs_dir2_block_tail_t *btp; /* block tail */ + xfs_dir2_data_entry_t *dep; /* block data entry */ + xfs_dir2_data_unused_t *dup; /* block unused entry */ + char *endptr; /* end of the data entries */ + int error; /* error return value */ + xfs_mount_t *mp; /* filesystem mount point */ + char *ptr; /* current data entry */ + int wantoff; /* starting block offset */ + xfs_off_t cook; + + mp = dp->i_mount; + /* + * If the block number in the offset is out of range, we're done. + */ + if (xfs_dir2_dataptr_to_db(mp, ctx->pos) > mp->m_dirdatablk) + return 0; + + error = xfs_dir3_block_read(NULL, dp, &bp); + if (error) + return error; + + /* + * Extract the byte offset we start at from the seek pointer. + * We'll skip entries before this. + */ + wantoff = xfs_dir2_dataptr_to_off(mp, ctx->pos); + hdr = bp->b_addr; + xfs_dir3_data_check(dp, bp); + /* + * Set up values for the loop. + */ + btp = xfs_dir2_block_tail_p(mp, hdr); + ptr = (char *)xfs_dir3_data_entry_p(hdr); + endptr = (char *)xfs_dir2_block_leaf_p(btp); + + /* + * Loop over the data portion of the block. + * Each object is a real entry (dep) or an unused one (dup). + */ + while (ptr < endptr) { + __uint8_t filetype; + + dup = (xfs_dir2_data_unused_t *)ptr; + /* + * Unused, skip it. + */ + if (be16_to_cpu(dup->freetag) == XFS_DIR2_DATA_FREE_TAG) { + ptr += be16_to_cpu(dup->length); + continue; + } + + dep = (xfs_dir2_data_entry_t *)ptr; + + /* + * Bump pointer for the next iteration. + */ + ptr += xfs_dir3_data_entsize(mp, dep->namelen); + /* + * The entry is before the desired starting point, skip it. + */ + if ((char *)dep - (char *)hdr < wantoff) + continue; + + cook = xfs_dir2_db_off_to_dataptr(mp, mp->m_dirdatablk, + (char *)dep - (char *)hdr); + + ctx->pos = cook & 0x7fffffff; + filetype = xfs_dir3_dirent_get_ftype(mp, dep); + /* + * If it didn't fit, set the final offset to here & return. + */ + if (!dir_emit(ctx, (char *)dep->name, dep->namelen, + be64_to_cpu(dep->inumber), + xfs_dir3_get_dtype(mp, filetype))) { + xfs_trans_brelse(NULL, bp); + return 0; + } + } + + /* + * Reached the end of the block. + * Set the offset to a non-existent block 1 and return. + */ + ctx->pos = xfs_dir2_db_off_to_dataptr(mp, mp->m_dirdatablk + 1, 0) & + 0x7fffffff; + xfs_trans_brelse(NULL, bp); + return 0; +} + +struct xfs_dir2_leaf_map_info { + xfs_extlen_t map_blocks; /* number of fsbs in map */ + xfs_dablk_t map_off; /* last mapped file offset */ + int map_size; /* total entries in *map */ + int map_valid; /* valid entries in *map */ + int nmap; /* mappings to ask xfs_bmapi */ + xfs_dir2_db_t curdb; /* db for current block */ + int ra_current; /* number of read-ahead blks */ + int ra_index; /* *map index for read-ahead */ + int ra_offset; /* map entry offset for ra */ + int ra_want; /* readahead count wanted */ + struct xfs_bmbt_irec map[]; /* map vector for blocks */ +}; + +STATIC int +xfs_dir2_leaf_readbuf( + struct xfs_inode *dp, + size_t bufsize, + struct xfs_dir2_leaf_map_info *mip, + xfs_dir2_off_t *curoff, + struct xfs_buf **bpp) +{ + struct xfs_mount *mp = dp->i_mount; + struct xfs_buf *bp = *bpp; + struct xfs_bmbt_irec *map = mip->map; + struct blk_plug plug; + int error = 0; + int length; + int i; + int j; + + /* + * If we have a buffer, we need to release it and + * take it out of the mapping. + */ + + if (bp) { + xfs_trans_brelse(NULL, bp); + bp = NULL; + mip->map_blocks -= mp->m_dirblkfsbs; + /* + * Loop to get rid of the extents for the + * directory block. + */ + for (i = mp->m_dirblkfsbs; i > 0; ) { + j = min_t(int, map->br_blockcount, i); + map->br_blockcount -= j; + map->br_startblock += j; + map->br_startoff += j; + /* + * If mapping is done, pitch it from + * the table. + */ + if (!map->br_blockcount && --mip->map_valid) + memmove(&map[0], &map[1], + sizeof(map[0]) * mip->map_valid); + i -= j; + } + } + + /* + * Recalculate the readahead blocks wanted. + */ + mip->ra_want = howmany(bufsize + mp->m_dirblksize, + mp->m_sb.sb_blocksize) - 1; + ASSERT(mip->ra_want >= 0); + + /* + * If we don't have as many as we want, and we haven't + * run out of data blocks, get some more mappings. + */ + if (1 + mip->ra_want > mip->map_blocks && + mip->map_off < xfs_dir2_byte_to_da(mp, XFS_DIR2_LEAF_OFFSET)) { + /* + * Get more bmaps, fill in after the ones + * we already have in the table. + */ + mip->nmap = mip->map_size - mip->map_valid; + error = xfs_bmapi_read(dp, mip->map_off, + xfs_dir2_byte_to_da(mp, XFS_DIR2_LEAF_OFFSET) - + mip->map_off, + &map[mip->map_valid], &mip->nmap, 0); + + /* + * Don't know if we should ignore this or try to return an + * error. The trouble with returning errors is that readdir + * will just stop without actually passing the error through. + */ + if (error) + goto out; /* XXX */ + + /* + * If we got all the mappings we asked for, set the final map + * offset based on the last bmap value received. Otherwise, + * we've reached the end. + */ + if (mip->nmap == mip->map_size - mip->map_valid) { + i = mip->map_valid + mip->nmap - 1; + mip->map_off = map[i].br_startoff + map[i].br_blockcount; + } else + mip->map_off = xfs_dir2_byte_to_da(mp, + XFS_DIR2_LEAF_OFFSET); + + /* + * Look for holes in the mapping, and eliminate them. Count up + * the valid blocks. + */ + for (i = mip->map_valid; i < mip->map_valid + mip->nmap; ) { + if (map[i].br_startblock == HOLESTARTBLOCK) { + mip->nmap--; + length = mip->map_valid + mip->nmap - i; + if (length) + memmove(&map[i], &map[i + 1], + sizeof(map[i]) * length); + } else { + mip->map_blocks += map[i].br_blockcount; + i++; + } + } + mip->map_valid += mip->nmap; + } + + /* + * No valid mappings, so no more data blocks. + */ + if (!mip->map_valid) { + *curoff = xfs_dir2_da_to_byte(mp, mip->map_off); + goto out; + } + + /* + * Read the directory block starting at the first mapping. + */ + mip->curdb = xfs_dir2_da_to_db(mp, map->br_startoff); + error = xfs_dir3_data_read(NULL, dp, map->br_startoff, + map->br_blockcount >= mp->m_dirblkfsbs ? + XFS_FSB_TO_DADDR(mp, map->br_startblock) : -1, &bp); + + /* + * Should just skip over the data block instead of giving up. + */ + if (error) + goto out; /* XXX */ + + /* + * Adjust the current amount of read-ahead: we just read a block that + * was previously ra. + */ + if (mip->ra_current) + mip->ra_current -= mp->m_dirblkfsbs; + + /* + * Do we need more readahead? + */ + blk_start_plug(&plug); + for (mip->ra_index = mip->ra_offset = i = 0; + mip->ra_want > mip->ra_current && i < mip->map_blocks; + i += mp->m_dirblkfsbs) { + ASSERT(mip->ra_index < mip->map_valid); + /* + * Read-ahead a contiguous directory block. + */ + if (i > mip->ra_current && + map[mip->ra_index].br_blockcount >= mp->m_dirblkfsbs) { + xfs_dir3_data_readahead(NULL, dp, + map[mip->ra_index].br_startoff + mip->ra_offset, + XFS_FSB_TO_DADDR(mp, + map[mip->ra_index].br_startblock + + mip->ra_offset)); + mip->ra_current = i; + } + + /* + * Read-ahead a non-contiguous directory block. This doesn't + * use our mapping, but this is a very rare case. + */ + else if (i > mip->ra_current) { + xfs_dir3_data_readahead(NULL, dp, + map[mip->ra_index].br_startoff + + mip->ra_offset, -1); + mip->ra_current = i; + } + + /* + * Advance offset through the mapping table. + */ + for (j = 0; j < mp->m_dirblkfsbs; j++) { + /* + * The rest of this extent but not more than a dir + * block. + */ + length = min_t(int, mp->m_dirblkfsbs, + map[mip->ra_index].br_blockcount - + mip->ra_offset); + j += length; + mip->ra_offset += length; + + /* + * Advance to the next mapping if this one is used up. + */ + if (mip->ra_offset == map[mip->ra_index].br_blockcount) { + mip->ra_offset = 0; + mip->ra_index++; + } + } + } + blk_finish_plug(&plug); + +out: + *bpp = bp; + return error; +} + +/* + * Getdents (readdir) for leaf and node directories. + * This reads the data blocks only, so is the same for both forms. + */ +STATIC int +xfs_dir2_leaf_getdents( + xfs_inode_t *dp, /* incore directory inode */ + struct dir_context *ctx, + size_t bufsize) +{ + struct xfs_buf *bp = NULL; /* data block buffer */ + xfs_dir2_data_hdr_t *hdr; /* data block header */ + xfs_dir2_data_entry_t *dep; /* data entry */ + xfs_dir2_data_unused_t *dup; /* unused entry */ + int error = 0; /* error return value */ + int length; /* temporary length value */ + xfs_mount_t *mp; /* filesystem mount point */ + int byteoff; /* offset in current block */ + xfs_dir2_off_t curoff; /* current overall offset */ + xfs_dir2_off_t newoff; /* new curoff after new blk */ + char *ptr = NULL; /* pointer to current data */ + struct xfs_dir2_leaf_map_info *map_info; + + /* + * If the offset is at or past the largest allowed value, + * give up right away. + */ + if (ctx->pos >= XFS_DIR2_MAX_DATAPTR) + return 0; + + mp = dp->i_mount; + + /* + * Set up to bmap a number of blocks based on the caller's + * buffer size, the directory block size, and the filesystem + * block size. + */ + length = howmany(bufsize + mp->m_dirblksize, + mp->m_sb.sb_blocksize); + map_info = kmem_zalloc(offsetof(struct xfs_dir2_leaf_map_info, map) + + (length * sizeof(struct xfs_bmbt_irec)), + KM_SLEEP | KM_NOFS); + map_info->map_size = length; + + /* + * Inside the loop we keep the main offset value as a byte offset + * in the directory file. + */ + curoff = xfs_dir2_dataptr_to_byte(mp, ctx->pos); + + /* + * Force this conversion through db so we truncate the offset + * down to get the start of the data block. + */ + map_info->map_off = xfs_dir2_db_to_da(mp, + xfs_dir2_byte_to_db(mp, curoff)); + + /* + * Loop over directory entries until we reach the end offset. + * Get more blocks and readahead as necessary. + */ + while (curoff < XFS_DIR2_LEAF_OFFSET) { + __uint8_t filetype; + + /* + * If we have no buffer, or we're off the end of the + * current buffer, need to get another one. + */ + if (!bp || ptr >= (char *)bp->b_addr + mp->m_dirblksize) { + + error = xfs_dir2_leaf_readbuf(dp, bufsize, map_info, + &curoff, &bp); + if (error || !map_info->map_valid) + break; + + /* + * Having done a read, we need to set a new offset. + */ + newoff = xfs_dir2_db_off_to_byte(mp, map_info->curdb, 0); + /* + * Start of the current block. + */ + if (curoff < newoff) + curoff = newoff; + /* + * Make sure we're in the right block. + */ + else if (curoff > newoff) + ASSERT(xfs_dir2_byte_to_db(mp, curoff) == + map_info->curdb); + hdr = bp->b_addr; + xfs_dir3_data_check(dp, bp); + /* + * Find our position in the block. + */ + ptr = (char *)xfs_dir3_data_entry_p(hdr); + byteoff = xfs_dir2_byte_to_off(mp, curoff); + /* + * Skip past the header. + */ + if (byteoff == 0) + curoff += xfs_dir3_data_entry_offset(hdr); + /* + * Skip past entries until we reach our offset. + */ + else { + while ((char *)ptr - (char *)hdr < byteoff) { + dup = (xfs_dir2_data_unused_t *)ptr; + + if (be16_to_cpu(dup->freetag) + == XFS_DIR2_DATA_FREE_TAG) { + + length = be16_to_cpu(dup->length); + ptr += length; + continue; + } + dep = (xfs_dir2_data_entry_t *)ptr; + length = + xfs_dir3_data_entsize(mp, dep->namelen); + ptr += length; + } + /* + * Now set our real offset. + */ + curoff = + xfs_dir2_db_off_to_byte(mp, + xfs_dir2_byte_to_db(mp, curoff), + (char *)ptr - (char *)hdr); + if (ptr >= (char *)hdr + mp->m_dirblksize) { + continue; + } + } + } + /* + * We have a pointer to an entry. + * Is it a live one? + */ + dup = (xfs_dir2_data_unused_t *)ptr; + /* + * No, it's unused, skip over it. + */ + if (be16_to_cpu(dup->freetag) == XFS_DIR2_DATA_FREE_TAG) { + length = be16_to_cpu(dup->length); + ptr += length; + curoff += length; + continue; + } + + dep = (xfs_dir2_data_entry_t *)ptr; + length = xfs_dir3_data_entsize(mp, dep->namelen); + filetype = xfs_dir3_dirent_get_ftype(mp, dep); + + ctx->pos = xfs_dir2_byte_to_dataptr(mp, curoff) & 0x7fffffff; + if (!dir_emit(ctx, (char *)dep->name, dep->namelen, + be64_to_cpu(dep->inumber), + xfs_dir3_get_dtype(mp, filetype))) + break; + + /* + * Advance to next entry in the block. + */ + ptr += length; + curoff += length; + /* bufsize may have just been a guess; don't go negative */ + bufsize = bufsize > length ? bufsize - length : 0; + } + + /* + * All done. Set output offset value to current offset. + */ + if (curoff > xfs_dir2_dataptr_to_byte(mp, XFS_DIR2_MAX_DATAPTR)) + ctx->pos = XFS_DIR2_MAX_DATAPTR & 0x7fffffff; + else + ctx->pos = xfs_dir2_byte_to_dataptr(mp, curoff) & 0x7fffffff; + kmem_free(map_info); + if (bp) + xfs_trans_brelse(NULL, bp); + return error; +} + +/* + * Read a directory. + */ +int +xfs_readdir( + xfs_inode_t *dp, + struct dir_context *ctx, + size_t bufsize) +{ + int rval; /* return value */ + int v; /* type-checking value */ + + trace_xfs_readdir(dp); + + if (XFS_FORCED_SHUTDOWN(dp->i_mount)) + return XFS_ERROR(EIO); + + ASSERT(S_ISDIR(dp->i_d.di_mode)); + XFS_STATS_INC(xs_dir_getdents); + + if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL) + rval = xfs_dir2_sf_getdents(dp, ctx); + else if ((rval = xfs_dir2_isblock(NULL, dp, &v))) + ; + else if (v) + rval = xfs_dir2_block_getdents(dp, ctx); + else + rval = xfs_dir2_leaf_getdents(dp, ctx, bufsize); + return rval; +} diff --git a/fs/xfs/xfs_dir2_sf.c b/fs/xfs/xfs_dir2_sf.c index 97676a3..bb6e284 100644 --- a/fs/xfs/xfs_dir2_sf.c +++ b/fs/xfs/xfs_dir2_sf.c @@ -29,8 +29,8 @@ #include "xfs_inode.h" #include "xfs_inode_item.h" #include "xfs_error.h" -#include "xfs_dir2.h" #include "xfs_dir2_format.h" +#include "xfs_dir2.h" #include "xfs_dir2_priv.h" #include "xfs_trace.h" @@ -95,7 +95,7 @@ xfs_dir2_sf_get_parent_ino( return xfs_dir2_sf_get_ino(hdr, &hdr->parent); } -static void +void xfs_dir2_sf_put_parent_ino( struct xfs_dir2_sf_hdr *hdr, xfs_ino_t ino) @@ -105,31 +105,38 @@ xfs_dir2_sf_put_parent_ino( /* * In short-form directory entries the inode numbers are stored at variable - * offset behind the entry name. The inode numbers may only be accessed - * through the helpers below. + * offset behind the entry name. If the entry stores a filetype value, then it + * sits between the name and the inode number. Hence the inode numbers may only + * be accessed through the helpers below. */ static xfs_dir2_inou_t * -xfs_dir2_sfe_inop( +xfs_dir3_sfe_inop( + struct xfs_mount *mp, struct xfs_dir2_sf_entry *sfep) { - return (xfs_dir2_inou_t *)&sfep->name[sfep->namelen]; + __uint8_t *ptr = &sfep->name[sfep->namelen]; + if (xfs_sb_version_hasftype(&mp->m_sb)) + ptr++; + return (xfs_dir2_inou_t *)ptr; } xfs_ino_t -xfs_dir2_sfe_get_ino( +xfs_dir3_sfe_get_ino( + struct xfs_mount *mp, struct xfs_dir2_sf_hdr *hdr, struct xfs_dir2_sf_entry *sfep) { - return xfs_dir2_sf_get_ino(hdr, xfs_dir2_sfe_inop(sfep)); + return xfs_dir2_sf_get_ino(hdr, xfs_dir3_sfe_inop(mp, sfep)); } -static void -xfs_dir2_sfe_put_ino( +void +xfs_dir3_sfe_put_ino( + struct xfs_mount *mp, struct xfs_dir2_sf_hdr *hdr, struct xfs_dir2_sf_entry *sfep, xfs_ino_t ino) { - xfs_dir2_sf_put_ino(hdr, xfs_dir2_sfe_inop(sfep), ino); + xfs_dir2_sf_put_ino(hdr, xfs_dir3_sfe_inop(mp, sfep), ino); } /* @@ -157,9 +164,16 @@ xfs_dir2_block_sfsize( int namelen; /* total name bytes */ xfs_ino_t parent = 0; /* parent inode number */ int size=0; /* total computed size */ + int has_ftype; mp = dp->i_mount; + /* + * if there is a filetype field, add the extra byte to the namelen + * for each entry that we see. + */ + has_ftype = xfs_sb_version_hasftype(&mp->m_sb) ? 1 : 0; + count = i8count = namelen = 0; btp = xfs_dir2_block_tail_p(mp, hdr); blp = xfs_dir2_block_leaf_p(btp); @@ -188,9 +202,10 @@ xfs_dir2_block_sfsize( if (!isdot) i8count += be64_to_cpu(dep->inumber) > XFS_DIR2_MAX_SHORT_INUM; #endif + /* take into account the file type field */ if (!isdot && !isdotdot) { count++; - namelen += dep->namelen; + namelen += dep->namelen + has_ftype; } else if (isdotdot) parent = be64_to_cpu(dep->inumber); /* @@ -316,12 +331,14 @@ xfs_dir2_block_to_sf( (xfs_dir2_data_aoff_t) ((char *)dep - (char *)hdr)); memcpy(sfep->name, dep->name, dep->namelen); - xfs_dir2_sfe_put_ino(sfp, sfep, + xfs_dir3_sfe_put_ino(mp, sfp, sfep, be64_to_cpu(dep->inumber)); + xfs_dir3_sfe_put_ftype(mp, sfp, sfep, + xfs_dir3_dirent_get_ftype(mp, dep)); - sfep = xfs_dir2_sf_nextentry(sfp, sfep); + sfep = xfs_dir3_sf_nextentry(mp, sfp, sfep); } - ptr += xfs_dir2_data_entsize(dep->namelen); + ptr += xfs_dir3_data_entsize(mp, dep->namelen); } ASSERT((char *)sfep - (char *)sfp == size); xfs_dir2_sf_check(args); @@ -372,7 +389,7 @@ xfs_dir2_sf_addname( /* * Compute entry (and change in) size. */ - add_entsize = xfs_dir2_sf_entsize(sfp, args->namelen); + add_entsize = xfs_dir3_sf_entsize(dp->i_mount, sfp, args->namelen); incr_isize = add_entsize; objchange = 0; #if XFS_BIG_INUMS @@ -466,8 +483,9 @@ xfs_dir2_sf_addname_easy( /* * Grow the in-inode space. */ - xfs_idata_realloc(dp, xfs_dir2_sf_entsize(sfp, args->namelen), - XFS_DATA_FORK); + xfs_idata_realloc(dp, + xfs_dir3_sf_entsize(dp->i_mount, sfp, args->namelen), + XFS_DATA_FORK); /* * Need to set up again due to realloc of the inode data. */ @@ -479,7 +497,9 @@ xfs_dir2_sf_addname_easy( sfep->namelen = args->namelen; xfs_dir2_sf_put_offset(sfep, offset); memcpy(sfep->name, args->name, sfep->namelen); - xfs_dir2_sfe_put_ino(sfp, sfep, args->inumber); + xfs_dir3_sfe_put_ino(dp->i_mount, sfp, sfep, args->inumber); + xfs_dir3_sfe_put_ftype(dp->i_mount, sfp, sfep, args->filetype); + /* * Update the header and inode. */ @@ -519,11 +539,13 @@ xfs_dir2_sf_addname_hard( xfs_dir2_sf_hdr_t *oldsfp; /* original shortform dir */ xfs_dir2_sf_entry_t *sfep; /* entry in new dir */ xfs_dir2_sf_hdr_t *sfp; /* new shortform dir */ + struct xfs_mount *mp; /* * Copy the old directory to the stack buffer. */ dp = args->dp; + mp = dp->i_mount; sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data; old_isize = (int)dp->i_d.di_size; @@ -535,13 +557,13 @@ xfs_dir2_sf_addname_hard( * to insert the new entry. * If it's going to end up at the end then oldsfep will point there. */ - for (offset = XFS_DIR3_DATA_FIRST_OFFSET(dp->i_mount), + for (offset = XFS_DIR3_DATA_FIRST_OFFSET(mp), oldsfep = xfs_dir2_sf_firstentry(oldsfp), - add_datasize = xfs_dir2_data_entsize(args->namelen), + add_datasize = xfs_dir3_data_entsize(mp, args->namelen), eof = (char *)oldsfep == &buf[old_isize]; !eof; - offset = new_offset + xfs_dir2_data_entsize(oldsfep->namelen), - oldsfep = xfs_dir2_sf_nextentry(oldsfp, oldsfep), + offset = new_offset + xfs_dir3_data_entsize(mp, oldsfep->namelen), + oldsfep = xfs_dir3_sf_nextentry(mp, oldsfp, oldsfep), eof = (char *)oldsfep == &buf[old_isize]) { new_offset = xfs_dir2_sf_get_offset(oldsfep); if (offset + add_datasize <= new_offset) @@ -570,7 +592,8 @@ xfs_dir2_sf_addname_hard( sfep->namelen = args->namelen; xfs_dir2_sf_put_offset(sfep, offset); memcpy(sfep->name, args->name, sfep->namelen); - xfs_dir2_sfe_put_ino(sfp, sfep, args->inumber); + xfs_dir3_sfe_put_ino(mp, sfp, sfep, args->inumber); + xfs_dir3_sfe_put_ftype(mp, sfp, sfep, args->filetype); sfp->count++; #if XFS_BIG_INUMS if (args->inumber > XFS_DIR2_MAX_SHORT_INUM && !objchange) @@ -580,7 +603,7 @@ xfs_dir2_sf_addname_hard( * If there's more left to copy, do that. */ if (!eof) { - sfep = xfs_dir2_sf_nextentry(sfp, sfep); + sfep = xfs_dir3_sf_nextentry(mp, sfp, sfep); memcpy(sfep, oldsfep, old_isize - nbytes); } kmem_free(buf); @@ -616,7 +639,7 @@ xfs_dir2_sf_addname_pick( mp = dp->i_mount; sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data; - size = xfs_dir2_data_entsize(args->namelen); + size = xfs_dir3_data_entsize(mp, args->namelen); offset = XFS_DIR3_DATA_FIRST_OFFSET(mp); sfep = xfs_dir2_sf_firstentry(sfp); holefit = 0; @@ -629,8 +652,8 @@ xfs_dir2_sf_addname_pick( if (!holefit) holefit = offset + size <= xfs_dir2_sf_get_offset(sfep); offset = xfs_dir2_sf_get_offset(sfep) + - xfs_dir2_data_entsize(sfep->namelen); - sfep = xfs_dir2_sf_nextentry(sfp, sfep); + xfs_dir3_data_entsize(mp, sfep->namelen); + sfep = xfs_dir3_sf_nextentry(mp, sfp, sfep); } /* * Calculate data bytes used excluding the new entry, if this @@ -684,31 +707,34 @@ xfs_dir2_sf_check( int offset; /* data offset */ xfs_dir2_sf_entry_t *sfep; /* shortform dir entry */ xfs_dir2_sf_hdr_t *sfp; /* shortform structure */ + struct xfs_mount *mp; dp = args->dp; + mp = dp->i_mount; sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data; - offset = XFS_DIR3_DATA_FIRST_OFFSET(dp->i_mount); + offset = XFS_DIR3_DATA_FIRST_OFFSET(mp); ino = xfs_dir2_sf_get_parent_ino(sfp); i8count = ino > XFS_DIR2_MAX_SHORT_INUM; for (i = 0, sfep = xfs_dir2_sf_firstentry(sfp); i < sfp->count; - i++, sfep = xfs_dir2_sf_nextentry(sfp, sfep)) { + i++, sfep = xfs_dir3_sf_nextentry(mp, sfp, sfep)) { ASSERT(xfs_dir2_sf_get_offset(sfep) >= offset); - ino = xfs_dir2_sfe_get_ino(sfp, sfep); + ino = xfs_dir3_sfe_get_ino(mp, sfp, sfep); i8count += ino > XFS_DIR2_MAX_SHORT_INUM; offset = xfs_dir2_sf_get_offset(sfep) + - xfs_dir2_data_entsize(sfep->namelen); + xfs_dir3_data_entsize(mp, sfep->namelen); + ASSERT(xfs_dir3_sfe_get_ftype(mp, sfp, sfep) < + XFS_DIR3_FT_MAX); } ASSERT(i8count == sfp->i8count); ASSERT(XFS_BIG_INUMS || i8count == 0); ASSERT((char *)sfep - (char *)sfp == dp->i_d.di_size); ASSERT(offset + (sfp->count + 2) * (uint)sizeof(xfs_dir2_leaf_entry_t) + - (uint)sizeof(xfs_dir2_block_tail_t) <= - dp->i_mount->m_dirblksize); + (uint)sizeof(xfs_dir2_block_tail_t) <= mp->m_dirblksize); } #endif /* DEBUG */ @@ -765,100 +791,6 @@ xfs_dir2_sf_create( return 0; } -int /* error */ -xfs_dir2_sf_getdents( - xfs_inode_t *dp, /* incore directory inode */ - struct dir_context *ctx) -{ - int i; /* shortform entry number */ - xfs_mount_t *mp; /* filesystem mount point */ - xfs_dir2_dataptr_t off; /* current entry's offset */ - xfs_dir2_sf_entry_t *sfep; /* shortform directory entry */ - xfs_dir2_sf_hdr_t *sfp; /* shortform structure */ - xfs_dir2_dataptr_t dot_offset; - xfs_dir2_dataptr_t dotdot_offset; - xfs_ino_t ino; - - mp = dp->i_mount; - - ASSERT(dp->i_df.if_flags & XFS_IFINLINE); - /* - * Give up if the directory is way too short. - */ - if (dp->i_d.di_size < offsetof(xfs_dir2_sf_hdr_t, parent)) { - ASSERT(XFS_FORCED_SHUTDOWN(mp)); - return XFS_ERROR(EIO); - } - - ASSERT(dp->i_df.if_bytes == dp->i_d.di_size); - ASSERT(dp->i_df.if_u1.if_data != NULL); - - sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data; - - ASSERT(dp->i_d.di_size >= xfs_dir2_sf_hdr_size(sfp->i8count)); - - /* - * If the block number in the offset is out of range, we're done. - */ - if (xfs_dir2_dataptr_to_db(mp, ctx->pos) > mp->m_dirdatablk) - return 0; - - /* - * Precalculate offsets for . and .. as we will always need them. - * - * XXX(hch): the second argument is sometimes 0 and sometimes - * mp->m_dirdatablk. - */ - dot_offset = xfs_dir2_db_off_to_dataptr(mp, mp->m_dirdatablk, - XFS_DIR3_DATA_DOT_OFFSET(mp)); - dotdot_offset = xfs_dir2_db_off_to_dataptr(mp, mp->m_dirdatablk, - XFS_DIR3_DATA_DOTDOT_OFFSET(mp)); - - /* - * Put . entry unless we're starting past it. - */ - if (ctx->pos <= dot_offset) { - ctx->pos = dot_offset & 0x7fffffff; - if (!dir_emit(ctx, ".", 1, dp->i_ino, DT_DIR)) - return 0; - } - - /* - * Put .. entry unless we're starting past it. - */ - if (ctx->pos <= dotdot_offset) { - ino = xfs_dir2_sf_get_parent_ino(sfp); - ctx->pos = dotdot_offset & 0x7fffffff; - if (!dir_emit(ctx, "..", 2, ino, DT_DIR)) - return 0; - } - - /* - * Loop while there are more entries and put'ing works. - */ - sfep = xfs_dir2_sf_firstentry(sfp); - for (i = 0; i < sfp->count; i++) { - off = xfs_dir2_db_off_to_dataptr(mp, mp->m_dirdatablk, - xfs_dir2_sf_get_offset(sfep)); - - if (ctx->pos > off) { - sfep = xfs_dir2_sf_nextentry(sfp, sfep); - continue; - } - - ino = xfs_dir2_sfe_get_ino(sfp, sfep); - ctx->pos = off & 0x7fffffff; - if (!dir_emit(ctx, (char *)sfep->name, sfep->namelen, - ino, DT_UNKNOWN)) - return 0; - sfep = xfs_dir2_sf_nextentry(sfp, sfep); - } - - ctx->pos = xfs_dir2_db_off_to_dataptr(mp, mp->m_dirdatablk + 1, 0) & - 0x7fffffff; - return 0; -} - /* * Lookup an entry in a shortform directory. * Returns EEXIST if found, ENOENT if not found. @@ -898,6 +830,7 @@ xfs_dir2_sf_lookup( if (args->namelen == 1 && args->name[0] == '.') { args->inumber = dp->i_ino; args->cmpresult = XFS_CMP_EXACT; + args->filetype = XFS_DIR3_FT_DIR; return XFS_ERROR(EEXIST); } /* @@ -907,6 +840,7 @@ xfs_dir2_sf_lookup( args->name[0] == '.' && args->name[1] == '.') { args->inumber = xfs_dir2_sf_get_parent_ino(sfp); args->cmpresult = XFS_CMP_EXACT; + args->filetype = XFS_DIR3_FT_DIR; return XFS_ERROR(EEXIST); } /* @@ -914,7 +848,7 @@ xfs_dir2_sf_lookup( */ ci_sfep = NULL; for (i = 0, sfep = xfs_dir2_sf_firstentry(sfp); i < sfp->count; - i++, sfep = xfs_dir2_sf_nextentry(sfp, sfep)) { + i++, sfep = xfs_dir3_sf_nextentry(dp->i_mount, sfp, sfep)) { /* * Compare name and if it's an exact match, return the inode * number. If it's the first case-insensitive match, store the @@ -924,7 +858,10 @@ xfs_dir2_sf_lookup( sfep->namelen); if (cmp != XFS_CMP_DIFFERENT && cmp != args->cmpresult) { args->cmpresult = cmp; - args->inumber = xfs_dir2_sfe_get_ino(sfp, sfep); + args->inumber = xfs_dir3_sfe_get_ino(dp->i_mount, + sfp, sfep); + args->filetype = xfs_dir3_sfe_get_ftype(dp->i_mount, + sfp, sfep); if (cmp == XFS_CMP_EXACT) return XFS_ERROR(EEXIST); ci_sfep = sfep; @@ -980,10 +917,10 @@ xfs_dir2_sf_removename( * Find the one we're deleting. */ for (i = 0, sfep = xfs_dir2_sf_firstentry(sfp); i < sfp->count; - i++, sfep = xfs_dir2_sf_nextentry(sfp, sfep)) { + i++, sfep = xfs_dir3_sf_nextentry(dp->i_mount, sfp, sfep)) { if (xfs_da_compname(args, sfep->name, sfep->namelen) == XFS_CMP_EXACT) { - ASSERT(xfs_dir2_sfe_get_ino(sfp, sfep) == + ASSERT(xfs_dir3_sfe_get_ino(dp->i_mount, sfp, sfep) == args->inumber); break; } @@ -997,7 +934,7 @@ xfs_dir2_sf_removename( * Calculate sizes. */ byteoff = (int)((char *)sfep - (char *)sfp); - entsize = xfs_dir2_sf_entsize(sfp, args->namelen); + entsize = xfs_dir3_sf_entsize(dp->i_mount, sfp, args->namelen); newsize = oldsize - entsize; /* * Copy the part if any after the removed entry, sliding it down. @@ -1113,16 +1050,19 @@ xfs_dir2_sf_replace( * Normal entry, look for the name. */ else { - for (i = 0, sfep = xfs_dir2_sf_firstentry(sfp); - i < sfp->count; - i++, sfep = xfs_dir2_sf_nextentry(sfp, sfep)) { + for (i = 0, sfep = xfs_dir2_sf_firstentry(sfp); i < sfp->count; + i++, sfep = xfs_dir3_sf_nextentry(dp->i_mount, sfp, sfep)) { if (xfs_da_compname(args, sfep->name, sfep->namelen) == XFS_CMP_EXACT) { #if XFS_BIG_INUMS || defined(DEBUG) - ino = xfs_dir2_sfe_get_ino(sfp, sfep); + ino = xfs_dir3_sfe_get_ino(dp->i_mount, + sfp, sfep); ASSERT(args->inumber != ino); #endif - xfs_dir2_sfe_put_ino(sfp, sfep, args->inumber); + xfs_dir3_sfe_put_ino(dp->i_mount, sfp, sfep, + args->inumber); + xfs_dir3_sfe_put_ftype(dp->i_mount, sfp, sfep, + args->filetype); break; } } @@ -1189,10 +1129,12 @@ xfs_dir2_sf_toino4( int oldsize; /* old inode size */ xfs_dir2_sf_entry_t *sfep; /* new sf entry */ xfs_dir2_sf_hdr_t *sfp; /* new sf directory */ + struct xfs_mount *mp; trace_xfs_dir2_sf_toino4(args); dp = args->dp; + mp = dp->i_mount; /* * Copy the old directory to the buffer. @@ -1230,13 +1172,15 @@ xfs_dir2_sf_toino4( for (i = 0, sfep = xfs_dir2_sf_firstentry(sfp), oldsfep = xfs_dir2_sf_firstentry(oldsfp); i < sfp->count; - i++, sfep = xfs_dir2_sf_nextentry(sfp, sfep), - oldsfep = xfs_dir2_sf_nextentry(oldsfp, oldsfep)) { + i++, sfep = xfs_dir3_sf_nextentry(mp, sfp, sfep), + oldsfep = xfs_dir3_sf_nextentry(mp, oldsfp, oldsfep)) { sfep->namelen = oldsfep->namelen; sfep->offset = oldsfep->offset; memcpy(sfep->name, oldsfep->name, sfep->namelen); - xfs_dir2_sfe_put_ino(sfp, sfep, - xfs_dir2_sfe_get_ino(oldsfp, oldsfep)); + xfs_dir3_sfe_put_ino(mp, sfp, sfep, + xfs_dir3_sfe_get_ino(mp, oldsfp, oldsfep)); + xfs_dir3_sfe_put_ftype(mp, sfp, sfep, + xfs_dir3_sfe_get_ftype(mp, oldsfp, oldsfep)); } /* * Clean up the inode. @@ -1264,10 +1208,12 @@ xfs_dir2_sf_toino8( int oldsize; /* old inode size */ xfs_dir2_sf_entry_t *sfep; /* new sf entry */ xfs_dir2_sf_hdr_t *sfp; /* new sf directory */ + struct xfs_mount *mp; trace_xfs_dir2_sf_toino8(args); dp = args->dp; + mp = dp->i_mount; /* * Copy the old directory to the buffer. @@ -1305,13 +1251,15 @@ xfs_dir2_sf_toino8( for (i = 0, sfep = xfs_dir2_sf_firstentry(sfp), oldsfep = xfs_dir2_sf_firstentry(oldsfp); i < sfp->count; - i++, sfep = xfs_dir2_sf_nextentry(sfp, sfep), - oldsfep = xfs_dir2_sf_nextentry(oldsfp, oldsfep)) { + i++, sfep = xfs_dir3_sf_nextentry(mp, sfp, sfep), + oldsfep = xfs_dir3_sf_nextentry(mp, oldsfp, oldsfep)) { sfep->namelen = oldsfep->namelen; sfep->offset = oldsfep->offset; memcpy(sfep->name, oldsfep->name, sfep->namelen); - xfs_dir2_sfe_put_ino(sfp, sfep, - xfs_dir2_sfe_get_ino(oldsfp, oldsfep)); + xfs_dir3_sfe_put_ino(mp, sfp, sfep, + xfs_dir3_sfe_get_ino(mp, oldsfp, oldsfep)); + xfs_dir3_sfe_put_ftype(mp, sfp, sfep, + xfs_dir3_sfe_get_ftype(mp, oldsfp, oldsfep)); } /* * Clean up the inode. diff --git a/fs/xfs/xfs_discard.c b/fs/xfs/xfs_discard.c index 69cf4fc..45560ee 100644 --- a/fs/xfs/xfs_discard.c +++ b/fs/xfs/xfs_discard.c @@ -16,12 +16,13 @@ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #include "xfs.h" -#include "xfs_sb.h" +#include "xfs_format.h" #include "xfs_log.h" +#include "xfs_trans.h" +#include "xfs_sb.h" #include "xfs_ag.h" #include "xfs_mount.h" #include "xfs_quota.h" -#include "xfs_trans.h" #include "xfs_alloc_btree.h" #include "xfs_bmap_btree.h" #include "xfs_ialloc_btree.h" diff --git a/fs/xfs/xfs_dquot.c b/fs/xfs/xfs_dquot.c index 0adf27e..251c666 100644 --- a/fs/xfs/xfs_dquot.c +++ b/fs/xfs/xfs_dquot.c @@ -17,6 +17,7 @@ */ #include "xfs.h" #include "xfs_fs.h" +#include "xfs_format.h" #include "xfs_bit.h" #include "xfs_log.h" #include "xfs_trans.h" @@ -28,6 +29,7 @@ #include "xfs_bmap_btree.h" #include "xfs_inode.h" #include "xfs_bmap.h" +#include "xfs_bmap_util.h" #include "xfs_rtalloc.h" #include "xfs_error.h" #include "xfs_itable.h" @@ -710,10 +712,8 @@ xfs_qm_dqread( if (flags & XFS_QMOPT_DQALLOC) { tp = xfs_trans_alloc(mp, XFS_TRANS_QM_DQALLOC); - error = xfs_trans_reserve(tp, XFS_QM_DQALLOC_SPACE_RES(mp), - XFS_QM_DQALLOC_LOG_RES(mp), 0, - XFS_TRANS_PERM_LOG_RES, - XFS_WRITE_LOG_COUNT); + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_attrsetm, + XFS_QM_DQALLOC_SPACE_RES(mp), 0); if (error) goto error1; cancelflags = XFS_TRANS_RELEASE_LOG_RES; diff --git a/fs/xfs/xfs_dquot_item.c b/fs/xfs/xfs_dquot_item.c index 57aa4b0..60c6e1f 100644 --- a/fs/xfs/xfs_dquot_item.c +++ b/fs/xfs/xfs_dquot_item.c @@ -17,6 +17,7 @@ */ #include "xfs.h" #include "xfs_fs.h" +#include "xfs_format.h" #include "xfs_log.h" #include "xfs_trans.h" #include "xfs_sb.h" @@ -43,14 +44,15 @@ static inline struct xfs_dq_logitem *DQUOT_ITEM(struct xfs_log_item *lip) /* * returns the number of iovecs needed to log the given dquot item. */ -STATIC uint +STATIC void xfs_qm_dquot_logitem_size( - struct xfs_log_item *lip) + struct xfs_log_item *lip, + int *nvecs, + int *nbytes) { - /* - * we need only two iovecs, one for the format, one for the real thing - */ - return 2; + *nvecs += 2; + *nbytes += sizeof(struct xfs_dq_logformat) + + sizeof(struct xfs_disk_dquot); } /* @@ -285,11 +287,14 @@ static inline struct xfs_qoff_logitem *QOFF_ITEM(struct xfs_log_item *lip) * We only need 1 iovec for an quotaoff item. It just logs the * quotaoff_log_format structure. */ -STATIC uint +STATIC void xfs_qm_qoff_logitem_size( - struct xfs_log_item *lip) + struct xfs_log_item *lip, + int *nvecs, + int *nbytes) { - return 1; + *nvecs += 1; + *nbytes += sizeof(struct xfs_qoff_logitem); } /* diff --git a/fs/xfs/xfs_error.c b/fs/xfs/xfs_error.c index 35d3f5b..1123d93f 100644 --- a/fs/xfs/xfs_error.c +++ b/fs/xfs/xfs_error.c @@ -26,7 +26,6 @@ #include "xfs_bmap_btree.h" #include "xfs_dinode.h" #include "xfs_inode.h" -#include "xfs_utils.h" #include "xfs_error.h" #ifdef DEBUG diff --git a/fs/xfs/xfs_export.c b/fs/xfs/xfs_export.c index c585bc6..066df42 100644 --- a/fs/xfs/xfs_export.c +++ b/fs/xfs/xfs_export.c @@ -21,10 +21,11 @@ #include "xfs_trans.h" #include "xfs_sb.h" #include "xfs_ag.h" -#include "xfs_dir2.h" #include "xfs_mount.h" +#include "xfs_da_btree.h" +#include "xfs_dir2_format.h" +#include "xfs_dir2.h" #include "xfs_export.h" -#include "xfs_vnodeops.h" #include "xfs_bmap_btree.h" #include "xfs_inode.h" #include "xfs_inode_item.h" diff --git a/fs/xfs/xfs_extent_busy.c b/fs/xfs/xfs_extent_busy.c index 85e9f87a..86f559f 100644 --- a/fs/xfs/xfs_extent_busy.c +++ b/fs/xfs/xfs_extent_busy.c @@ -147,7 +147,7 @@ xfs_extent_busy_search( * extent. If the overlap covers the beginning, the end, or all of the busy * extent, the overlapping portion can be made unbusy and used for the * allocation. We can't split a busy extent because we can't modify a - * transaction/CIL context busy list, but we can update an entries block + * transaction/CIL context busy list, but we can update an entry's block * number or length. * * Returns true if the extent can safely be reused, or false if the search diff --git a/fs/xfs/xfs_extfree_item.c b/fs/xfs/xfs_extfree_item.c index 452920a..dc53e8f 100644 --- a/fs/xfs/xfs_extfree_item.c +++ b/fs/xfs/xfs_extfree_item.c @@ -73,11 +73,22 @@ __xfs_efi_release( * We only need 1 iovec for an efi item. It just logs the efi_log_format * structure. */ -STATIC uint +static inline int +xfs_efi_item_sizeof( + struct xfs_efi_log_item *efip) +{ + return sizeof(struct xfs_efi_log_format) + + (efip->efi_format.efi_nextents - 1) * sizeof(xfs_extent_t); +} + +STATIC void xfs_efi_item_size( - struct xfs_log_item *lip) + struct xfs_log_item *lip, + int *nvecs, + int *nbytes) { - return 1; + *nvecs += 1; + *nbytes += xfs_efi_item_sizeof(EFI_ITEM(lip)); } /* @@ -93,21 +104,17 @@ xfs_efi_item_format( struct xfs_log_iovec *log_vector) { struct xfs_efi_log_item *efip = EFI_ITEM(lip); - uint size; ASSERT(atomic_read(&efip->efi_next_extent) == efip->efi_format.efi_nextents); efip->efi_format.efi_type = XFS_LI_EFI; - - size = sizeof(xfs_efi_log_format_t); - size += (efip->efi_format.efi_nextents - 1) * sizeof(xfs_extent_t); efip->efi_format.efi_size = 1; log_vector->i_addr = &efip->efi_format; - log_vector->i_len = size; + log_vector->i_len = xfs_efi_item_sizeof(efip); log_vector->i_type = XLOG_REG_TYPE_EFI_FORMAT; - ASSERT(size >= sizeof(xfs_efi_log_format_t)); + ASSERT(log_vector->i_len >= sizeof(xfs_efi_log_format_t)); } @@ -333,11 +340,22 @@ xfs_efd_item_free(struct xfs_efd_log_item *efdp) * We only need 1 iovec for an efd item. It just logs the efd_log_format * structure. */ -STATIC uint +static inline int +xfs_efd_item_sizeof( + struct xfs_efd_log_item *efdp) +{ + return sizeof(xfs_efd_log_format_t) + + (efdp->efd_format.efd_nextents - 1) * sizeof(xfs_extent_t); +} + +STATIC void xfs_efd_item_size( - struct xfs_log_item *lip) + struct xfs_log_item *lip, + int *nvecs, + int *nbytes) { - return 1; + *nvecs += 1; + *nbytes += xfs_efd_item_sizeof(EFD_ITEM(lip)); } /* @@ -353,20 +371,16 @@ xfs_efd_item_format( struct xfs_log_iovec *log_vector) { struct xfs_efd_log_item *efdp = EFD_ITEM(lip); - uint size; ASSERT(efdp->efd_next_extent == efdp->efd_format.efd_nextents); efdp->efd_format.efd_type = XFS_LI_EFD; - - size = sizeof(xfs_efd_log_format_t); - size += (efdp->efd_format.efd_nextents - 1) * sizeof(xfs_extent_t); efdp->efd_format.efd_size = 1; log_vector->i_addr = &efdp->efd_format; - log_vector->i_len = size; + log_vector->i_len = xfs_efd_item_sizeof(efdp); log_vector->i_type = XLOG_REG_TYPE_EFD_FORMAT; - ASSERT(size >= sizeof(xfs_efd_log_format_t)); + ASSERT(log_vector->i_len >= sizeof(xfs_efd_log_format_t)); } /* diff --git a/fs/xfs/xfs_extfree_item.h b/fs/xfs/xfs_extfree_item.h index 4322224..0ffbce3 100644 --- a/fs/xfs/xfs_extfree_item.h +++ b/fs/xfs/xfs_extfree_item.h @@ -18,93 +18,11 @@ #ifndef __XFS_EXTFREE_ITEM_H__ #define __XFS_EXTFREE_ITEM_H__ +/* kernel only EFI/EFD definitions */ + struct xfs_mount; struct kmem_zone; -typedef struct xfs_extent { - xfs_dfsbno_t ext_start; - xfs_extlen_t ext_len; -} xfs_extent_t; - -/* - * Since an xfs_extent_t has types (start:64, len: 32) - * there are different alignments on 32 bit and 64 bit kernels. - * So we provide the different variants for use by a - * conversion routine. - */ - -typedef struct xfs_extent_32 { - __uint64_t ext_start; - __uint32_t ext_len; -} __attribute__((packed)) xfs_extent_32_t; - -typedef struct xfs_extent_64 { - __uint64_t ext_start; - __uint32_t ext_len; - __uint32_t ext_pad; -} xfs_extent_64_t; - -/* - * This is the structure used to lay out an efi log item in the - * log. The efi_extents field is a variable size array whose - * size is given by efi_nextents. - */ -typedef struct xfs_efi_log_format { - __uint16_t efi_type; /* efi log item type */ - __uint16_t efi_size; /* size of this item */ - __uint32_t efi_nextents; /* # extents to free */ - __uint64_t efi_id; /* efi identifier */ - xfs_extent_t efi_extents[1]; /* array of extents to free */ -} xfs_efi_log_format_t; - -typedef struct xfs_efi_log_format_32 { - __uint16_t efi_type; /* efi log item type */ - __uint16_t efi_size; /* size of this item */ - __uint32_t efi_nextents; /* # extents to free */ - __uint64_t efi_id; /* efi identifier */ - xfs_extent_32_t efi_extents[1]; /* array of extents to free */ -} __attribute__((packed)) xfs_efi_log_format_32_t; - -typedef struct xfs_efi_log_format_64 { - __uint16_t efi_type; /* efi log item type */ - __uint16_t efi_size; /* size of this item */ - __uint32_t efi_nextents; /* # extents to free */ - __uint64_t efi_id; /* efi identifier */ - xfs_extent_64_t efi_extents[1]; /* array of extents to free */ -} xfs_efi_log_format_64_t; - -/* - * This is the structure used to lay out an efd log item in the - * log. The efd_extents array is a variable size array whose - * size is given by efd_nextents; - */ -typedef struct xfs_efd_log_format { - __uint16_t efd_type; /* efd log item type */ - __uint16_t efd_size; /* size of this item */ - __uint32_t efd_nextents; /* # of extents freed */ - __uint64_t efd_efi_id; /* id of corresponding efi */ - xfs_extent_t efd_extents[1]; /* array of extents freed */ -} xfs_efd_log_format_t; - -typedef struct xfs_efd_log_format_32 { - __uint16_t efd_type; /* efd log item type */ - __uint16_t efd_size; /* size of this item */ - __uint32_t efd_nextents; /* # of extents freed */ - __uint64_t efd_efi_id; /* id of corresponding efi */ - xfs_extent_32_t efd_extents[1]; /* array of extents freed */ -} __attribute__((packed)) xfs_efd_log_format_32_t; - -typedef struct xfs_efd_log_format_64 { - __uint16_t efd_type; /* efd log item type */ - __uint16_t efd_size; /* size of this item */ - __uint32_t efd_nextents; /* # of extents freed */ - __uint64_t efd_efi_id; /* id of corresponding efi */ - xfs_extent_64_t efd_extents[1]; /* array of extents freed */ -} xfs_efd_log_format_64_t; - - -#ifdef __KERNEL__ - /* * Max number of extents in fast allocation path. */ @@ -160,6 +78,4 @@ int xfs_efi_copy_format(xfs_log_iovec_t *buf, xfs_efi_log_format_t *dst_efi_fmt); void xfs_efi_item_free(xfs_efi_log_item_t *); -#endif /* __KERNEL__ */ - #endif /* __XFS_EXTFREE_ITEM_H__ */ diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c index de3dc98..4c749ab 100644 --- a/fs/xfs/xfs_file.c +++ b/fs/xfs/xfs_file.c @@ -28,10 +28,11 @@ #include "xfs_inode.h" #include "xfs_inode_item.h" #include "xfs_bmap.h" +#include "xfs_bmap_util.h" #include "xfs_error.h" -#include "xfs_vnodeops.h" #include "xfs_da_btree.h" #include "xfs_dir2_format.h" +#include "xfs_dir2.h" #include "xfs_dir2_priv.h" #include "xfs_ioctl.h" #include "xfs_trace.h" diff --git a/fs/xfs/xfs_filestream.c b/fs/xfs/xfs_filestream.c index 5170306..ce78e65 100644 --- a/fs/xfs/xfs_filestream.c +++ b/fs/xfs/xfs_filestream.c @@ -16,18 +16,18 @@ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #include "xfs.h" +#include "xfs_log.h" #include "xfs_bmap_btree.h" #include "xfs_inum.h" #include "xfs_dinode.h" #include "xfs_inode.h" #include "xfs_ag.h" -#include "xfs_log.h" #include "xfs_trans.h" #include "xfs_sb.h" #include "xfs_mount.h" #include "xfs_bmap.h" +#include "xfs_bmap_util.h" #include "xfs_alloc.h" -#include "xfs_utils.h" #include "xfs_mru_cache.h" #include "xfs_filestream.h" #include "xfs_trace.h" @@ -668,8 +668,8 @@ exit: */ int xfs_filestream_new_ag( - xfs_bmalloca_t *ap, - xfs_agnumber_t *agp) + struct xfs_bmalloca *ap, + xfs_agnumber_t *agp) { int flags, err; xfs_inode_t *ip, *pip = NULL; diff --git a/fs/xfs/xfs_filestream.h b/fs/xfs/xfs_filestream.h index 09dd9af..6d61dbe 100644 --- a/fs/xfs/xfs_filestream.h +++ b/fs/xfs/xfs_filestream.h @@ -18,8 +18,6 @@ #ifndef __XFS_FILESTREAM_H__ #define __XFS_FILESTREAM_H__ -#ifdef __KERNEL__ - struct xfs_mount; struct xfs_inode; struct xfs_perag; @@ -69,6 +67,4 @@ xfs_inode_is_filestream( (ip->i_d.di_flags & XFS_DIFLAG_FILESTREAM); } -#endif /* __KERNEL__ */ - #endif /* __XFS_FILESTREAM_H__ */ diff --git a/fs/xfs/xfs_format.h b/fs/xfs/xfs_format.h new file mode 100644 index 0000000..35c08ff --- /dev/null +++ b/fs/xfs/xfs_format.h @@ -0,0 +1,169 @@ +/* + * Copyright (c) 2000-2005 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#ifndef __XFS_FORMAT_H__ +#define __XFS_FORMAT_H__ + +/* + * XFS On Disk Format Definitions + * + * This header file defines all the on-disk format definitions for + * general XFS objects. Directory and attribute related objects are defined in + * xfs_da_format.h, which log and log item formats are defined in + * xfs_log_format.h. Everything else goes here. + */ + +struct xfs_mount; +struct xfs_trans; +struct xfs_inode; +struct xfs_buf; +struct xfs_ifork; + +/* + * RealTime Device format definitions + */ + +/* Min and max rt extent sizes, specified in bytes */ +#define XFS_MAX_RTEXTSIZE (1024 * 1024 * 1024) /* 1GB */ +#define XFS_DFL_RTEXTSIZE (64 * 1024) /* 64kB */ +#define XFS_MIN_RTEXTSIZE (4 * 1024) /* 4kB */ + +#define XFS_BLOCKSIZE(mp) ((mp)->m_sb.sb_blocksize) +#define XFS_BLOCKMASK(mp) ((mp)->m_blockmask) +#define XFS_BLOCKWSIZE(mp) ((mp)->m_blockwsize) +#define XFS_BLOCKWMASK(mp) ((mp)->m_blockwmask) + +/* + * RT Summary and bit manipulation macros. + */ +#define XFS_SUMOFFS(mp,ls,bb) ((int)((ls) * (mp)->m_sb.sb_rbmblocks + (bb))) +#define XFS_SUMOFFSTOBLOCK(mp,s) \ + (((s) * (uint)sizeof(xfs_suminfo_t)) >> (mp)->m_sb.sb_blocklog) +#define XFS_SUMPTR(mp,bp,so) \ + ((xfs_suminfo_t *)((bp)->b_addr + \ + (((so) * (uint)sizeof(xfs_suminfo_t)) & XFS_BLOCKMASK(mp)))) + +#define XFS_BITTOBLOCK(mp,bi) ((bi) >> (mp)->m_blkbit_log) +#define XFS_BLOCKTOBIT(mp,bb) ((bb) << (mp)->m_blkbit_log) +#define XFS_BITTOWORD(mp,bi) \ + ((int)(((bi) >> XFS_NBWORDLOG) & XFS_BLOCKWMASK(mp))) + +#define XFS_RTMIN(a,b) ((a) < (b) ? (a) : (b)) +#define XFS_RTMAX(a,b) ((a) > (b) ? (a) : (b)) + +#define XFS_RTLOBIT(w) xfs_lowbit32(w) +#define XFS_RTHIBIT(w) xfs_highbit32(w) + +#if XFS_BIG_BLKNOS +#define XFS_RTBLOCKLOG(b) xfs_highbit64(b) +#else +#define XFS_RTBLOCKLOG(b) xfs_highbit32(b) +#endif + +/* + * Dquot and dquot block format definitions + */ +#define XFS_DQUOT_MAGIC 0x4451 /* 'DQ' */ +#define XFS_DQUOT_VERSION (u_int8_t)0x01 /* latest version number */ + +/* + * This is the main portion of the on-disk representation of quota + * information for a user. This is the q_core of the xfs_dquot_t that + * is kept in kernel memory. We pad this with some more expansion room + * to construct the on disk structure. + */ +typedef struct xfs_disk_dquot { + __be16 d_magic; /* dquot magic = XFS_DQUOT_MAGIC */ + __u8 d_version; /* dquot version */ + __u8 d_flags; /* XFS_DQ_USER/PROJ/GROUP */ + __be32 d_id; /* user,project,group id */ + __be64 d_blk_hardlimit;/* absolute limit on disk blks */ + __be64 d_blk_softlimit;/* preferred limit on disk blks */ + __be64 d_ino_hardlimit;/* maximum # allocated inodes */ + __be64 d_ino_softlimit;/* preferred inode limit */ + __be64 d_bcount; /* disk blocks owned by the user */ + __be64 d_icount; /* inodes owned by the user */ + __be32 d_itimer; /* zero if within inode limits if not, + this is when we refuse service */ + __be32 d_btimer; /* similar to above; for disk blocks */ + __be16 d_iwarns; /* warnings issued wrt num inodes */ + __be16 d_bwarns; /* warnings issued wrt disk blocks */ + __be32 d_pad0; /* 64 bit align */ + __be64 d_rtb_hardlimit;/* absolute limit on realtime blks */ + __be64 d_rtb_softlimit;/* preferred limit on RT disk blks */ + __be64 d_rtbcount; /* realtime blocks owned */ + __be32 d_rtbtimer; /* similar to above; for RT disk blocks */ + __be16 d_rtbwarns; /* warnings issued wrt RT disk blocks */ + __be16 d_pad; +} xfs_disk_dquot_t; + +/* + * This is what goes on disk. This is separated from the xfs_disk_dquot because + * carrying the unnecessary padding would be a waste of memory. + */ +typedef struct xfs_dqblk { + xfs_disk_dquot_t dd_diskdq; /* portion that lives incore as well */ + char dd_fill[4]; /* filling for posterity */ + + /* + * These two are only present on filesystems with the CRC bits set. + */ + __be32 dd_crc; /* checksum */ + __be64 dd_lsn; /* last modification in log */ + uuid_t dd_uuid; /* location information */ +} xfs_dqblk_t; + +#define XFS_DQUOT_CRC_OFF offsetof(struct xfs_dqblk, dd_crc) + +/* + * Remote symlink format and access functions. + */ +#define XFS_SYMLINK_MAGIC 0x58534c4d /* XSLM */ + +struct xfs_dsymlink_hdr { + __be32 sl_magic; + __be32 sl_offset; + __be32 sl_bytes; + __be32 sl_crc; + uuid_t sl_uuid; + __be64 sl_owner; + __be64 sl_blkno; + __be64 sl_lsn; +}; + +/* + * The maximum pathlen is 1024 bytes. Since the minimum file system + * blocksize is 512 bytes, we can get a max of 3 extents back from + * bmapi when crc headers are taken into account. + */ +#define XFS_SYMLINK_MAPS 3 + +#define XFS_SYMLINK_BUF_SPACE(mp, bufsize) \ + ((bufsize) - (xfs_sb_version_hascrc(&(mp)->m_sb) ? \ + sizeof(struct xfs_dsymlink_hdr) : 0)) + +int xfs_symlink_blocks(struct xfs_mount *mp, int pathlen); +int xfs_symlink_hdr_set(struct xfs_mount *mp, xfs_ino_t ino, uint32_t offset, + uint32_t size, struct xfs_buf *bp); +bool xfs_symlink_hdr_ok(struct xfs_mount *mp, xfs_ino_t ino, uint32_t offset, + uint32_t size, struct xfs_buf *bp); +void xfs_symlink_local_to_remote(struct xfs_trans *tp, struct xfs_buf *bp, + struct xfs_inode *ip, struct xfs_ifork *ifp); + +extern const struct xfs_buf_ops xfs_symlink_buf_ops; + +#endif /* __XFS_FORMAT_H__ */ diff --git a/fs/xfs/xfs_fs.h b/fs/xfs/xfs_fs.h index d046955..1edb5cc 100644 --- a/fs/xfs/xfs_fs.h +++ b/fs/xfs/xfs_fs.h @@ -240,7 +240,9 @@ typedef struct xfs_fsop_resblks { /* - * Minimum and maximum sizes need for growth checks + * Minimum and maximum sizes need for growth checks. + * + * Block counts are in units of filesystem blocks, not basic blocks. */ #define XFS_MIN_AG_BLOCKS 64 #define XFS_MIN_LOG_BLOCKS 512ULL @@ -311,6 +313,17 @@ typedef struct xfs_bstat { } xfs_bstat_t; /* + * Project quota id helpers (previously projid was 16bit only + * and using two 16bit values to hold new 32bit projid was choosen + * to retain compatibility with "old" filesystems). + */ +static inline __uint32_t +bstat_get_projid(struct xfs_bstat *bs) +{ + return (__uint32_t)bs->bs_projid_hi << 16 | bs->bs_projid_lo; +} + +/* * The user-level BulkStat Request interface structure. */ typedef struct xfs_fsop_bulkreq { @@ -344,7 +357,7 @@ typedef struct xfs_error_injection { * Speculative preallocation trimming. */ #define XFS_EOFBLOCKS_VERSION 1 -struct xfs_eofblocks { +struct xfs_fs_eofblocks { __u32 eof_version; __u32 eof_flags; uid_t eof_uid; @@ -450,6 +463,21 @@ typedef struct xfs_handle { + (handle).ha_fid.fid_len) /* + * Structure passed to XFS_IOC_SWAPEXT + */ +typedef struct xfs_swapext +{ + __int64_t sx_version; /* version */ +#define XFS_SX_VERSION 0 + __int64_t sx_fdtarget; /* fd of target file */ + __int64_t sx_fdtmp; /* fd of tmp file */ + xfs_off_t sx_offset; /* offset into file */ + xfs_off_t sx_length; /* leng from offset */ + char sx_pad[16]; /* pad space, unused */ + xfs_bstat_t sx_stat; /* stat of target b4 copy */ +} xfs_swapext_t; + +/* * Flags for going down operation */ #define XFS_FSOP_GOING_FLAGS_DEFAULT 0x0 /* going down */ @@ -511,8 +539,14 @@ typedef struct xfs_handle { #define XFS_IOC_ERROR_INJECTION _IOW ('X', 116, struct xfs_error_injection) #define XFS_IOC_ERROR_CLEARALL _IOW ('X', 117, struct xfs_error_injection) /* XFS_IOC_ATTRCTL_BY_HANDLE -- deprecated 118 */ + /* XFS_IOC_FREEZE -- FIFREEZE 119 */ /* XFS_IOC_THAW -- FITHAW 120 */ +#ifndef FIFREEZE +#define XFS_IOC_FREEZE _IOWR('X', 119, int) +#define XFS_IOC_THAW _IOWR('X', 120, int) +#endif + #define XFS_IOC_FSSETDM_BY_HANDLE _IOW ('X', 121, struct xfs_fsop_setdm_handlereq) #define XFS_IOC_ATTRLIST_BY_HANDLE _IOW ('X', 122, struct xfs_fsop_attrlist_handlereq) #define XFS_IOC_ATTRMULTI_BY_HANDLE _IOW ('X', 123, struct xfs_fsop_attrmulti_handlereq) diff --git a/fs/xfs/xfs_fsops.c b/fs/xfs/xfs_fsops.c index 614eb0c..e64ee52 100644 --- a/fs/xfs/xfs_fsops.c +++ b/fs/xfs/xfs_fsops.c @@ -203,8 +203,9 @@ xfs_growfs_data_private( tp = xfs_trans_alloc(mp, XFS_TRANS_GROWFS); tp->t_flags |= XFS_TRANS_RESERVE; - if ((error = xfs_trans_reserve(tp, XFS_GROWFS_SPACE_RES(mp), - XFS_GROWDATA_LOG_RES(mp), 0, 0, 0))) { + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_growdata, + XFS_GROWFS_SPACE_RES(mp), 0); + if (error) { xfs_trans_cancel(tp, 0); return error; } @@ -739,8 +740,7 @@ xfs_fs_log_dummy( int error; tp = _xfs_trans_alloc(mp, XFS_TRANS_DUMMY1, KM_SLEEP); - error = xfs_trans_reserve(tp, 0, XFS_SB_LOG_RES(mp), 0, 0, - XFS_DEFAULT_LOG_COUNT); + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_sb, 0, 0); if (error) { xfs_trans_cancel(tp, 0); return error; diff --git a/fs/xfs/xfs_ialloc.c b/fs/xfs/xfs_ialloc.c index 7a0c17d..ccf2fb1 100644 --- a/fs/xfs/xfs_ialloc.c +++ b/fs/xfs/xfs_ialloc.c @@ -39,6 +39,7 @@ #include "xfs_cksum.h" #include "xfs_buf_item.h" #include "xfs_icreate_item.h" +#include "xfs_icache.h" /* @@ -506,7 +507,7 @@ xfs_ialloc_next_ag( /* * Select an allocation group to look for a free inode in, based on the parent - * inode and then mode. Return the allocation group buffer. + * inode and the mode. Return the allocation group buffer. */ STATIC xfs_agnumber_t xfs_ialloc_ag_select( @@ -728,7 +729,7 @@ xfs_dialloc_ag( error = xfs_inobt_get_rec(cur, &rec, &j); if (error) goto error0; - XFS_WANT_CORRUPTED_GOTO(i == 1, error0); + XFS_WANT_CORRUPTED_GOTO(j == 1, error0); if (rec.ir_freecount > 0) { /* @@ -1341,7 +1342,7 @@ xfs_imap( xfs_agblock_t cluster_agbno; /* first block in inode cluster */ int error; /* error code */ int offset; /* index of inode in its buffer */ - int offset_agbno; /* blks from chunk start to inode */ + xfs_agblock_t offset_agbno; /* blks from chunk start to inode */ ASSERT(ino != NULLFSINO); diff --git a/fs/xfs/xfs_icache.c b/fs/xfs/xfs_icache.c index 3f90e1c..16219b9 100644 --- a/fs/xfs/xfs_icache.c +++ b/fs/xfs/xfs_icache.c @@ -17,6 +17,7 @@ */ #include "xfs.h" #include "xfs_fs.h" +#include "xfs_format.h" #include "xfs_types.h" #include "xfs_log.h" #include "xfs_log_priv.h" @@ -31,12 +32,12 @@ #include "xfs_dinode.h" #include "xfs_error.h" #include "xfs_filestream.h" -#include "xfs_vnodeops.h" #include "xfs_inode_item.h" #include "xfs_quota.h" #include "xfs_trace.h" #include "xfs_fsops.h" #include "xfs_icache.h" +#include "xfs_bmap_util.h" #include <linux/kthread.h> #include <linux/freezer.h> @@ -619,7 +620,7 @@ restart: /* * Background scanning to trim post-EOF preallocated space. This is queued - * based on the 'background_prealloc_discard_period' tunable (5m by default). + * based on the 'speculative_prealloc_lifetime' tunable (5m by default). */ STATIC void xfs_queue_eofblocks( @@ -1203,15 +1204,15 @@ xfs_inode_match_id( struct xfs_inode *ip, struct xfs_eofblocks *eofb) { - if (eofb->eof_flags & XFS_EOF_FLAGS_UID && - ip->i_d.di_uid != eofb->eof_uid) + if ((eofb->eof_flags & XFS_EOF_FLAGS_UID) && + !uid_eq(VFS_I(ip)->i_uid, eofb->eof_uid)) return 0; - if (eofb->eof_flags & XFS_EOF_FLAGS_GID && - ip->i_d.di_gid != eofb->eof_gid) + if ((eofb->eof_flags & XFS_EOF_FLAGS_GID) && + !gid_eq(VFS_I(ip)->i_gid, eofb->eof_gid)) return 0; - if (eofb->eof_flags & XFS_EOF_FLAGS_PRID && + if ((eofb->eof_flags & XFS_EOF_FLAGS_PRID) && xfs_get_projid(ip) != eofb->eof_prid) return 0; diff --git a/fs/xfs/xfs_icache.h b/fs/xfs/xfs_icache.h index a01afbb..8a89f7d 100644 --- a/fs/xfs/xfs_icache.h +++ b/fs/xfs/xfs_icache.h @@ -21,9 +21,24 @@ struct xfs_mount; struct xfs_perag; +struct xfs_eofblocks { + __u32 eof_flags; + kuid_t eof_uid; + kgid_t eof_gid; + prid_t eof_prid; + __u64 eof_min_file_size; +}; + #define SYNC_WAIT 0x0001 /* wait for i/o to complete */ #define SYNC_TRYLOCK 0x0002 /* only try to lock inodes */ +/* + * Flags for xfs_iget() + */ +#define XFS_IGET_CREATE 0x1 +#define XFS_IGET_UNTRUSTED 0x2 +#define XFS_IGET_DONTCACHE 0x4 + int xfs_iget(struct xfs_mount *mp, struct xfs_trans *tp, xfs_ino_t ino, uint flags, uint lock_flags, xfs_inode_t **ipp); @@ -49,4 +64,39 @@ int xfs_inode_ag_iterator_tag(struct xfs_mount *mp, int flags, void *args), int flags, void *args, int tag); +static inline int +xfs_fs_eofblocks_from_user( + struct xfs_fs_eofblocks *src, + struct xfs_eofblocks *dst) +{ + if (src->eof_version != XFS_EOFBLOCKS_VERSION) + return EINVAL; + + if (src->eof_flags & ~XFS_EOF_FLAGS_VALID) + return EINVAL; + + if (memchr_inv(&src->pad32, 0, sizeof(src->pad32)) || + memchr_inv(src->pad64, 0, sizeof(src->pad64))) + return EINVAL; + + dst->eof_flags = src->eof_flags; + dst->eof_prid = src->eof_prid; + dst->eof_min_file_size = src->eof_min_file_size; + + dst->eof_uid = INVALID_UID; + if (src->eof_flags & XFS_EOF_FLAGS_UID) { + dst->eof_uid = make_kuid(current_user_ns(), src->eof_uid); + if (!uid_valid(dst->eof_uid)) + return EINVAL; + } + + dst->eof_gid = INVALID_GID; + if (src->eof_flags & XFS_EOF_FLAGS_GID) { + dst->eof_gid = make_kgid(current_user_ns(), src->eof_gid); + if (!gid_valid(dst->eof_gid)) + return EINVAL; + } + return 0; +} + #endif diff --git a/fs/xfs/xfs_icreate_item.c b/fs/xfs/xfs_icreate_item.c index 7716a4e..5a5a593 100644 --- a/fs/xfs/xfs_icreate_item.c +++ b/fs/xfs/xfs_icreate_item.c @@ -20,23 +20,11 @@ #include "xfs_types.h" #include "xfs_bit.h" #include "xfs_log.h" -#include "xfs_inum.h" #include "xfs_trans.h" -#include "xfs_buf_item.h" #include "xfs_sb.h" #include "xfs_ag.h" -#include "xfs_dir2.h" #include "xfs_mount.h" #include "xfs_trans_priv.h" -#include "xfs_bmap_btree.h" -#include "xfs_alloc_btree.h" -#include "xfs_ialloc_btree.h" -#include "xfs_attr_sf.h" -#include "xfs_dinode.h" -#include "xfs_inode.h" -#include "xfs_inode_item.h" -#include "xfs_btree.h" -#include "xfs_ialloc.h" #include "xfs_error.h" #include "xfs_icreate_item.h" @@ -52,11 +40,14 @@ static inline struct xfs_icreate_item *ICR_ITEM(struct xfs_log_item *lip) * * We only need one iovec for the icreate log structure. */ -STATIC uint +STATIC void xfs_icreate_item_size( - struct xfs_log_item *lip) + struct xfs_log_item *lip, + int *nvecs, + int *nbytes) { - return 1; + *nvecs += 1; + *nbytes += sizeof(struct xfs_icreate_log); } /* diff --git a/fs/xfs/xfs_icreate_item.h b/fs/xfs/xfs_icreate_item.h index 88ba8aa..59e89f8 100644 --- a/fs/xfs/xfs_icreate_item.h +++ b/fs/xfs/xfs_icreate_item.h @@ -18,24 +18,6 @@ #ifndef XFS_ICREATE_ITEM_H #define XFS_ICREATE_ITEM_H 1 -/* - * on disk log item structure - * - * Log recovery assumes the first two entries are the type and size and they fit - * in 32 bits. Also in host order (ugh) so they have to be 32 bit aligned so - * decoding can be done correctly. - */ -struct xfs_icreate_log { - __uint16_t icl_type; /* type of log format structure */ - __uint16_t icl_size; /* size of log format structure */ - __be32 icl_ag; /* ag being allocated in */ - __be32 icl_agbno; /* start block of inode range */ - __be32 icl_count; /* number of inodes to initialise */ - __be32 icl_isize; /* size of inodes */ - __be32 icl_length; /* length of extent to initialise */ - __be32 icl_gen; /* inode generation number to use */ -}; - /* in memory log item structure */ struct xfs_icreate_item { struct xfs_log_item ic_item; diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c index bb262c2..e3d7538 100644 --- a/fs/xfs/xfs_inode.c +++ b/fs/xfs/xfs_inode.c @@ -19,18 +19,23 @@ #include "xfs.h" #include "xfs_fs.h" -#include "xfs_types.h" +#include "xfs_format.h" #include "xfs_log.h" #include "xfs_inum.h" #include "xfs_trans.h" +#include "xfs_trans_space.h" #include "xfs_trans_priv.h" #include "xfs_sb.h" #include "xfs_ag.h" #include "xfs_mount.h" +#include "xfs_da_btree.h" +#include "xfs_dir2_format.h" +#include "xfs_dir2.h" #include "xfs_bmap_btree.h" #include "xfs_alloc_btree.h" #include "xfs_ialloc_btree.h" #include "xfs_attr_sf.h" +#include "xfs_attr.h" #include "xfs_dinode.h" #include "xfs_inode.h" #include "xfs_buf_item.h" @@ -39,16 +44,15 @@ #include "xfs_alloc.h" #include "xfs_ialloc.h" #include "xfs_bmap.h" +#include "xfs_bmap_util.h" #include "xfs_error.h" -#include "xfs_utils.h" #include "xfs_quota.h" #include "xfs_filestream.h" -#include "xfs_vnodeops.h" #include "xfs_cksum.h" #include "xfs_trace.h" #include "xfs_icache.h" +#include "xfs_symlink.h" -kmem_zone_t *xfs_ifork_zone; kmem_zone_t *xfs_inode_zone; /* @@ -58,9 +62,6 @@ kmem_zone_t *xfs_inode_zone; #define XFS_ITRUNC_MAX_EXTENTS 2 STATIC int xfs_iflush_int(xfs_inode_t *, xfs_buf_t *); -STATIC int xfs_iformat_local(xfs_inode_t *, xfs_dinode_t *, int, int); -STATIC int xfs_iformat_extents(xfs_inode_t *, xfs_dinode_t *, int); -STATIC int xfs_iformat_btree(xfs_inode_t *, xfs_dinode_t *, int); /* * helper function to extract extent size hint from inode @@ -310,623 +311,202 @@ xfs_isilocked( } #endif -void -__xfs_iflock( - struct xfs_inode *ip) -{ - wait_queue_head_t *wq = bit_waitqueue(&ip->i_flags, __XFS_IFLOCK_BIT); - DEFINE_WAIT_BIT(wait, &ip->i_flags, __XFS_IFLOCK_BIT); - - do { - prepare_to_wait_exclusive(wq, &wait.wait, TASK_UNINTERRUPTIBLE); - if (xfs_isiflocked(ip)) - io_schedule(); - } while (!xfs_iflock_nowait(ip)); - - finish_wait(wq, &wait.wait); -} - #ifdef DEBUG +int xfs_locked_n; +int xfs_small_retries; +int xfs_middle_retries; +int xfs_lots_retries; +int xfs_lock_delays; +#endif + /* - * Make sure that the extents in the given memory buffer - * are valid. + * Bump the subclass so xfs_lock_inodes() acquires each lock with + * a different value */ -STATIC void -xfs_validate_extents( - xfs_ifork_t *ifp, - int nrecs, - xfs_exntfmt_t fmt) +static inline int +xfs_lock_inumorder(int lock_mode, int subclass) { - xfs_bmbt_irec_t irec; - xfs_bmbt_rec_host_t rec; - int i; + if (lock_mode & (XFS_IOLOCK_SHARED|XFS_IOLOCK_EXCL)) + lock_mode |= (subclass + XFS_LOCK_INUMORDER) << XFS_IOLOCK_SHIFT; + if (lock_mode & (XFS_ILOCK_SHARED|XFS_ILOCK_EXCL)) + lock_mode |= (subclass + XFS_LOCK_INUMORDER) << XFS_ILOCK_SHIFT; - for (i = 0; i < nrecs; i++) { - xfs_bmbt_rec_host_t *ep = xfs_iext_get_ext(ifp, i); - rec.l0 = get_unaligned(&ep->l0); - rec.l1 = get_unaligned(&ep->l1); - xfs_bmbt_get_all(&rec, &irec); - if (fmt == XFS_EXTFMT_NOSTATE) - ASSERT(irec.br_state == XFS_EXT_NORM); - } + return lock_mode; } -#else /* DEBUG */ -#define xfs_validate_extents(ifp, nrecs, fmt) -#endif /* DEBUG */ /* - * Check that none of the inode's in the buffer have a next - * unlinked field of 0. + * The following routine will lock n inodes in exclusive mode. + * We assume the caller calls us with the inodes in i_ino order. + * + * We need to detect deadlock where an inode that we lock + * is in the AIL and we start waiting for another inode that is locked + * by a thread in a long running transaction (such as truncate). This can + * result in deadlock since the long running trans might need to wait + * for the inode we just locked in order to push the tail and free space + * in the log. */ -#if defined(DEBUG) void -xfs_inobp_check( - xfs_mount_t *mp, - xfs_buf_t *bp) +xfs_lock_inodes( + xfs_inode_t **ips, + int inodes, + uint lock_mode) { - int i; - int j; - xfs_dinode_t *dip; + int attempts = 0, i, j, try_lock; + xfs_log_item_t *lp; - j = mp->m_inode_cluster_size >> mp->m_sb.sb_inodelog; + ASSERT(ips && (inodes >= 2)); /* we need at least two */ - for (i = 0; i < j; i++) { - dip = (xfs_dinode_t *)xfs_buf_offset(bp, - i * mp->m_sb.sb_inodesize); - if (!dip->di_next_unlinked) { - xfs_alert(mp, - "Detected bogus zero next_unlinked field in incore inode buffer 0x%p.", - bp); - ASSERT(dip->di_next_unlinked); - } - } -} -#endif + try_lock = 0; + i = 0; -static void -xfs_inode_buf_verify( - struct xfs_buf *bp) -{ - struct xfs_mount *mp = bp->b_target->bt_mount; - int i; - int ni; - - /* - * Validate the magic number and version of every inode in the buffer - */ - ni = XFS_BB_TO_FSB(mp, bp->b_length) * mp->m_sb.sb_inopblock; - for (i = 0; i < ni; i++) { - int di_ok; - xfs_dinode_t *dip; - - dip = (struct xfs_dinode *)xfs_buf_offset(bp, - (i << mp->m_sb.sb_inodelog)); - di_ok = dip->di_magic == cpu_to_be16(XFS_DINODE_MAGIC) && - XFS_DINODE_GOOD_VERSION(dip->di_version); - if (unlikely(XFS_TEST_ERROR(!di_ok, mp, - XFS_ERRTAG_ITOBP_INOTOBP, - XFS_RANDOM_ITOBP_INOTOBP))) { - xfs_buf_ioerror(bp, EFSCORRUPTED); - XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_HIGH, - mp, dip); -#ifdef DEBUG - xfs_emerg(mp, - "bad inode magic/vsn daddr %lld #%d (magic=%x)", - (unsigned long long)bp->b_bn, i, - be16_to_cpu(dip->di_magic)); - ASSERT(0); -#endif - } - } - xfs_inobp_check(mp, bp); -} - - -static void -xfs_inode_buf_read_verify( - struct xfs_buf *bp) -{ - xfs_inode_buf_verify(bp); -} - -static void -xfs_inode_buf_write_verify( - struct xfs_buf *bp) -{ - xfs_inode_buf_verify(bp); -} - -const struct xfs_buf_ops xfs_inode_buf_ops = { - .verify_read = xfs_inode_buf_read_verify, - .verify_write = xfs_inode_buf_write_verify, -}; +again: + for (; i < inodes; i++) { + ASSERT(ips[i]); + if (i && (ips[i] == ips[i-1])) /* Already locked */ + continue; -/* - * This routine is called to map an inode to the buffer containing the on-disk - * version of the inode. It returns a pointer to the buffer containing the - * on-disk inode in the bpp parameter, and in the dipp parameter it returns a - * pointer to the on-disk inode within that buffer. - * - * If a non-zero error is returned, then the contents of bpp and dipp are - * undefined. - */ -int -xfs_imap_to_bp( - struct xfs_mount *mp, - struct xfs_trans *tp, - struct xfs_imap *imap, - struct xfs_dinode **dipp, - struct xfs_buf **bpp, - uint buf_flags, - uint iget_flags) -{ - struct xfs_buf *bp; - int error; + /* + * If try_lock is not set yet, make sure all locked inodes + * are not in the AIL. + * If any are, set try_lock to be used later. + */ - buf_flags |= XBF_UNMAPPED; - error = xfs_trans_read_buf(mp, tp, mp->m_ddev_targp, imap->im_blkno, - (int)imap->im_len, buf_flags, &bp, - &xfs_inode_buf_ops); - if (error) { - if (error == EAGAIN) { - ASSERT(buf_flags & XBF_TRYLOCK); - return error; + if (!try_lock) { + for (j = (i - 1); j >= 0 && !try_lock; j--) { + lp = (xfs_log_item_t *)ips[j]->i_itemp; + if (lp && (lp->li_flags & XFS_LI_IN_AIL)) { + try_lock++; + } + } } - if (error == EFSCORRUPTED && - (iget_flags & XFS_IGET_UNTRUSTED)) - return XFS_ERROR(EINVAL); - - xfs_warn(mp, "%s: xfs_trans_read_buf() returned error %d.", - __func__, error); - return error; - } - - *bpp = bp; - *dipp = (struct xfs_dinode *)xfs_buf_offset(bp, imap->im_boffset); - return 0; -} - -/* - * Move inode type and inode format specific information from the - * on-disk inode to the in-core inode. For fifos, devs, and sockets - * this means set if_rdev to the proper value. For files, directories, - * and symlinks this means to bring in the in-line data or extent - * pointers. For a file in B-tree format, only the root is immediately - * brought in-core. The rest will be in-lined in if_extents when it - * is first referenced (see xfs_iread_extents()). - */ -STATIC int -xfs_iformat( - xfs_inode_t *ip, - xfs_dinode_t *dip) -{ - xfs_attr_shortform_t *atp; - int size; - int error = 0; - xfs_fsize_t di_size; - - if (unlikely(be32_to_cpu(dip->di_nextents) + - be16_to_cpu(dip->di_anextents) > - be64_to_cpu(dip->di_nblocks))) { - xfs_warn(ip->i_mount, - "corrupt dinode %Lu, extent total = %d, nblocks = %Lu.", - (unsigned long long)ip->i_ino, - (int)(be32_to_cpu(dip->di_nextents) + - be16_to_cpu(dip->di_anextents)), - (unsigned long long) - be64_to_cpu(dip->di_nblocks)); - XFS_CORRUPTION_ERROR("xfs_iformat(1)", XFS_ERRLEVEL_LOW, - ip->i_mount, dip); - return XFS_ERROR(EFSCORRUPTED); - } - - if (unlikely(dip->di_forkoff > ip->i_mount->m_sb.sb_inodesize)) { - xfs_warn(ip->i_mount, "corrupt dinode %Lu, forkoff = 0x%x.", - (unsigned long long)ip->i_ino, - dip->di_forkoff); - XFS_CORRUPTION_ERROR("xfs_iformat(2)", XFS_ERRLEVEL_LOW, - ip->i_mount, dip); - return XFS_ERROR(EFSCORRUPTED); - } - - if (unlikely((ip->i_d.di_flags & XFS_DIFLAG_REALTIME) && - !ip->i_mount->m_rtdev_targp)) { - xfs_warn(ip->i_mount, - "corrupt dinode %Lu, has realtime flag set.", - ip->i_ino); - XFS_CORRUPTION_ERROR("xfs_iformat(realtime)", - XFS_ERRLEVEL_LOW, ip->i_mount, dip); - return XFS_ERROR(EFSCORRUPTED); - } - - switch (ip->i_d.di_mode & S_IFMT) { - case S_IFIFO: - case S_IFCHR: - case S_IFBLK: - case S_IFSOCK: - if (unlikely(dip->di_format != XFS_DINODE_FMT_DEV)) { - XFS_CORRUPTION_ERROR("xfs_iformat(3)", XFS_ERRLEVEL_LOW, - ip->i_mount, dip); - return XFS_ERROR(EFSCORRUPTED); - } - ip->i_d.di_size = 0; - ip->i_df.if_u2.if_rdev = xfs_dinode_get_rdev(dip); - break; + /* + * If any of the previous locks we have locked is in the AIL, + * we must TRY to get the second and subsequent locks. If + * we can't get any, we must release all we have + * and try again. + */ - case S_IFREG: - case S_IFLNK: - case S_IFDIR: - switch (dip->di_format) { - case XFS_DINODE_FMT_LOCAL: + if (try_lock) { + /* try_lock must be 0 if i is 0. */ /* - * no local regular files yet + * try_lock means we have an inode locked + * that is in the AIL. */ - if (unlikely(S_ISREG(be16_to_cpu(dip->di_mode)))) { - xfs_warn(ip->i_mount, - "corrupt inode %Lu (local format for regular file).", - (unsigned long long) ip->i_ino); - XFS_CORRUPTION_ERROR("xfs_iformat(4)", - XFS_ERRLEVEL_LOW, - ip->i_mount, dip); - return XFS_ERROR(EFSCORRUPTED); - } + ASSERT(i != 0); + if (!xfs_ilock_nowait(ips[i], xfs_lock_inumorder(lock_mode, i))) { + attempts++; + + /* + * Unlock all previous guys and try again. + * xfs_iunlock will try to push the tail + * if the inode is in the AIL. + */ + + for(j = i - 1; j >= 0; j--) { + + /* + * Check to see if we've already + * unlocked this one. + * Not the first one going back, + * and the inode ptr is the same. + */ + if ((j != (i - 1)) && ips[j] == + ips[j+1]) + continue; + + xfs_iunlock(ips[j], lock_mode); + } - di_size = be64_to_cpu(dip->di_size); - if (unlikely(di_size > XFS_DFORK_DSIZE(dip, ip->i_mount))) { - xfs_warn(ip->i_mount, - "corrupt inode %Lu (bad size %Ld for local inode).", - (unsigned long long) ip->i_ino, - (long long) di_size); - XFS_CORRUPTION_ERROR("xfs_iformat(5)", - XFS_ERRLEVEL_LOW, - ip->i_mount, dip); - return XFS_ERROR(EFSCORRUPTED); + if ((attempts % 5) == 0) { + delay(1); /* Don't just spin the CPU */ +#ifdef DEBUG + xfs_lock_delays++; +#endif + } + i = 0; + try_lock = 0; + goto again; } - - size = (int)di_size; - error = xfs_iformat_local(ip, dip, XFS_DATA_FORK, size); - break; - case XFS_DINODE_FMT_EXTENTS: - error = xfs_iformat_extents(ip, dip, XFS_DATA_FORK); - break; - case XFS_DINODE_FMT_BTREE: - error = xfs_iformat_btree(ip, dip, XFS_DATA_FORK); - break; - default: - XFS_ERROR_REPORT("xfs_iformat(6)", XFS_ERRLEVEL_LOW, - ip->i_mount); - return XFS_ERROR(EFSCORRUPTED); + } else { + xfs_ilock(ips[i], xfs_lock_inumorder(lock_mode, i)); } - break; - - default: - XFS_ERROR_REPORT("xfs_iformat(7)", XFS_ERRLEVEL_LOW, ip->i_mount); - return XFS_ERROR(EFSCORRUPTED); - } - if (error) { - return error; } - if (!XFS_DFORK_Q(dip)) - return 0; - - ASSERT(ip->i_afp == NULL); - ip->i_afp = kmem_zone_zalloc(xfs_ifork_zone, KM_SLEEP | KM_NOFS); - - switch (dip->di_aformat) { - case XFS_DINODE_FMT_LOCAL: - atp = (xfs_attr_shortform_t *)XFS_DFORK_APTR(dip); - size = be16_to_cpu(atp->hdr.totsize); - - if (unlikely(size < sizeof(struct xfs_attr_sf_hdr))) { - xfs_warn(ip->i_mount, - "corrupt inode %Lu (bad attr fork size %Ld).", - (unsigned long long) ip->i_ino, - (long long) size); - XFS_CORRUPTION_ERROR("xfs_iformat(8)", - XFS_ERRLEVEL_LOW, - ip->i_mount, dip); - return XFS_ERROR(EFSCORRUPTED); - } - error = xfs_iformat_local(ip, dip, XFS_ATTR_FORK, size); - break; - case XFS_DINODE_FMT_EXTENTS: - error = xfs_iformat_extents(ip, dip, XFS_ATTR_FORK); - break; - case XFS_DINODE_FMT_BTREE: - error = xfs_iformat_btree(ip, dip, XFS_ATTR_FORK); - break; - default: - error = XFS_ERROR(EFSCORRUPTED); - break; - } - if (error) { - kmem_zone_free(xfs_ifork_zone, ip->i_afp); - ip->i_afp = NULL; - xfs_idestroy_fork(ip, XFS_DATA_FORK); +#ifdef DEBUG + if (attempts) { + if (attempts < 5) xfs_small_retries++; + else if (attempts < 100) xfs_middle_retries++; + else xfs_lots_retries++; + } else { + xfs_locked_n++; } - return error; +#endif } /* - * The file is in-lined in the on-disk inode. - * If it fits into if_inline_data, then copy - * it there, otherwise allocate a buffer for it - * and copy the data there. Either way, set - * if_data to point at the data. - * If we allocate a buffer for the data, make - * sure that its size is a multiple of 4 and - * record the real size in i_real_bytes. + * xfs_lock_two_inodes() can only be used to lock one type of lock + * at a time - the iolock or the ilock, but not both at once. If + * we lock both at once, lockdep will report false positives saying + * we have violated locking orders. */ -STATIC int -xfs_iformat_local( - xfs_inode_t *ip, - xfs_dinode_t *dip, - int whichfork, - int size) +void +xfs_lock_two_inodes( + xfs_inode_t *ip0, + xfs_inode_t *ip1, + uint lock_mode) { - xfs_ifork_t *ifp; - int real_size; - - /* - * If the size is unreasonable, then something - * is wrong and we just bail out rather than crash in - * kmem_alloc() or memcpy() below. - */ - if (unlikely(size > XFS_DFORK_SIZE(dip, ip->i_mount, whichfork))) { - xfs_warn(ip->i_mount, - "corrupt inode %Lu (bad size %d for local fork, size = %d).", - (unsigned long long) ip->i_ino, size, - XFS_DFORK_SIZE(dip, ip->i_mount, whichfork)); - XFS_CORRUPTION_ERROR("xfs_iformat_local", XFS_ERRLEVEL_LOW, - ip->i_mount, dip); - return XFS_ERROR(EFSCORRUPTED); - } - ifp = XFS_IFORK_PTR(ip, whichfork); - real_size = 0; - if (size == 0) - ifp->if_u1.if_data = NULL; - else if (size <= sizeof(ifp->if_u2.if_inline_data)) - ifp->if_u1.if_data = ifp->if_u2.if_inline_data; - else { - real_size = roundup(size, 4); - ifp->if_u1.if_data = kmem_alloc(real_size, KM_SLEEP | KM_NOFS); - } - ifp->if_bytes = size; - ifp->if_real_bytes = real_size; - if (size) - memcpy(ifp->if_u1.if_data, XFS_DFORK_PTR(dip, whichfork), size); - ifp->if_flags &= ~XFS_IFEXTENTS; - ifp->if_flags |= XFS_IFINLINE; - return 0; -} + xfs_inode_t *temp; + int attempts = 0; + xfs_log_item_t *lp; -/* - * The file consists of a set of extents all - * of which fit into the on-disk inode. - * If there are few enough extents to fit into - * the if_inline_ext, then copy them there. - * Otherwise allocate a buffer for them and copy - * them into it. Either way, set if_extents - * to point at the extents. - */ -STATIC int -xfs_iformat_extents( - xfs_inode_t *ip, - xfs_dinode_t *dip, - int whichfork) -{ - xfs_bmbt_rec_t *dp; - xfs_ifork_t *ifp; - int nex; - int size; - int i; - - ifp = XFS_IFORK_PTR(ip, whichfork); - nex = XFS_DFORK_NEXTENTS(dip, whichfork); - size = nex * (uint)sizeof(xfs_bmbt_rec_t); - - /* - * If the number of extents is unreasonable, then something - * is wrong and we just bail out rather than crash in - * kmem_alloc() or memcpy() below. - */ - if (unlikely(size < 0 || size > XFS_DFORK_SIZE(dip, ip->i_mount, whichfork))) { - xfs_warn(ip->i_mount, "corrupt inode %Lu ((a)extents = %d).", - (unsigned long long) ip->i_ino, nex); - XFS_CORRUPTION_ERROR("xfs_iformat_extents(1)", XFS_ERRLEVEL_LOW, - ip->i_mount, dip); - return XFS_ERROR(EFSCORRUPTED); - } - - ifp->if_real_bytes = 0; - if (nex == 0) - ifp->if_u1.if_extents = NULL; - else if (nex <= XFS_INLINE_EXTS) - ifp->if_u1.if_extents = ifp->if_u2.if_inline_ext; - else - xfs_iext_add(ifp, 0, nex); - - ifp->if_bytes = size; - if (size) { - dp = (xfs_bmbt_rec_t *) XFS_DFORK_PTR(dip, whichfork); - xfs_validate_extents(ifp, nex, XFS_EXTFMT_INODE(ip)); - for (i = 0; i < nex; i++, dp++) { - xfs_bmbt_rec_host_t *ep = xfs_iext_get_ext(ifp, i); - ep->l0 = get_unaligned_be64(&dp->l0); - ep->l1 = get_unaligned_be64(&dp->l1); - } - XFS_BMAP_TRACE_EXLIST(ip, nex, whichfork); - if (whichfork != XFS_DATA_FORK || - XFS_EXTFMT_INODE(ip) == XFS_EXTFMT_NOSTATE) - if (unlikely(xfs_check_nostate_extents( - ifp, 0, nex))) { - XFS_ERROR_REPORT("xfs_iformat_extents(2)", - XFS_ERRLEVEL_LOW, - ip->i_mount); - return XFS_ERROR(EFSCORRUPTED); - } - } - ifp->if_flags |= XFS_IFEXTENTS; - return 0; -} + if (lock_mode & (XFS_IOLOCK_SHARED|XFS_IOLOCK_EXCL)) + ASSERT((lock_mode & (XFS_ILOCK_SHARED|XFS_ILOCK_EXCL)) == 0); + ASSERT(ip0->i_ino != ip1->i_ino); -/* - * The file has too many extents to fit into - * the inode, so they are in B-tree format. - * Allocate a buffer for the root of the B-tree - * and copy the root into it. The i_extents - * field will remain NULL until all of the - * extents are read in (when they are needed). - */ -STATIC int -xfs_iformat_btree( - xfs_inode_t *ip, - xfs_dinode_t *dip, - int whichfork) -{ - struct xfs_mount *mp = ip->i_mount; - xfs_bmdr_block_t *dfp; - xfs_ifork_t *ifp; - /* REFERENCED */ - int nrecs; - int size; - - ifp = XFS_IFORK_PTR(ip, whichfork); - dfp = (xfs_bmdr_block_t *)XFS_DFORK_PTR(dip, whichfork); - size = XFS_BMAP_BROOT_SPACE(mp, dfp); - nrecs = be16_to_cpu(dfp->bb_numrecs); - - /* - * blow out if -- fork has less extents than can fit in - * fork (fork shouldn't be a btree format), root btree - * block has more records than can fit into the fork, - * or the number of extents is greater than the number of - * blocks. - */ - if (unlikely(XFS_IFORK_NEXTENTS(ip, whichfork) <= - XFS_IFORK_MAXEXT(ip, whichfork) || - XFS_BMDR_SPACE_CALC(nrecs) > - XFS_DFORK_SIZE(dip, mp, whichfork) || - XFS_IFORK_NEXTENTS(ip, whichfork) > ip->i_d.di_nblocks)) { - xfs_warn(mp, "corrupt inode %Lu (btree).", - (unsigned long long) ip->i_ino); - XFS_CORRUPTION_ERROR("xfs_iformat_btree", XFS_ERRLEVEL_LOW, - mp, dip); - return XFS_ERROR(EFSCORRUPTED); - } - - ifp->if_broot_bytes = size; - ifp->if_broot = kmem_alloc(size, KM_SLEEP | KM_NOFS); - ASSERT(ifp->if_broot != NULL); - /* - * Copy and convert from the on-disk structure - * to the in-memory structure. - */ - xfs_bmdr_to_bmbt(ip, dfp, XFS_DFORK_SIZE(dip, ip->i_mount, whichfork), - ifp->if_broot, size); - ifp->if_flags &= ~XFS_IFEXTENTS; - ifp->if_flags |= XFS_IFBROOT; + if (ip0->i_ino > ip1->i_ino) { + temp = ip0; + ip0 = ip1; + ip1 = temp; + } - return 0; -} + again: + xfs_ilock(ip0, xfs_lock_inumorder(lock_mode, 0)); -STATIC void -xfs_dinode_from_disk( - xfs_icdinode_t *to, - xfs_dinode_t *from) -{ - to->di_magic = be16_to_cpu(from->di_magic); - to->di_mode = be16_to_cpu(from->di_mode); - to->di_version = from ->di_version; - to->di_format = from->di_format; - to->di_onlink = be16_to_cpu(from->di_onlink); - to->di_uid = be32_to_cpu(from->di_uid); - to->di_gid = be32_to_cpu(from->di_gid); - to->di_nlink = be32_to_cpu(from->di_nlink); - to->di_projid_lo = be16_to_cpu(from->di_projid_lo); - to->di_projid_hi = be16_to_cpu(from->di_projid_hi); - memcpy(to->di_pad, from->di_pad, sizeof(to->di_pad)); - to->di_flushiter = be16_to_cpu(from->di_flushiter); - to->di_atime.t_sec = be32_to_cpu(from->di_atime.t_sec); - to->di_atime.t_nsec = be32_to_cpu(from->di_atime.t_nsec); - to->di_mtime.t_sec = be32_to_cpu(from->di_mtime.t_sec); - to->di_mtime.t_nsec = be32_to_cpu(from->di_mtime.t_nsec); - to->di_ctime.t_sec = be32_to_cpu(from->di_ctime.t_sec); - to->di_ctime.t_nsec = be32_to_cpu(from->di_ctime.t_nsec); - to->di_size = be64_to_cpu(from->di_size); - to->di_nblocks = be64_to_cpu(from->di_nblocks); - to->di_extsize = be32_to_cpu(from->di_extsize); - to->di_nextents = be32_to_cpu(from->di_nextents); - to->di_anextents = be16_to_cpu(from->di_anextents); - to->di_forkoff = from->di_forkoff; - to->di_aformat = from->di_aformat; - to->di_dmevmask = be32_to_cpu(from->di_dmevmask); - to->di_dmstate = be16_to_cpu(from->di_dmstate); - to->di_flags = be16_to_cpu(from->di_flags); - to->di_gen = be32_to_cpu(from->di_gen); - - if (to->di_version == 3) { - to->di_changecount = be64_to_cpu(from->di_changecount); - to->di_crtime.t_sec = be32_to_cpu(from->di_crtime.t_sec); - to->di_crtime.t_nsec = be32_to_cpu(from->di_crtime.t_nsec); - to->di_flags2 = be64_to_cpu(from->di_flags2); - to->di_ino = be64_to_cpu(from->di_ino); - to->di_lsn = be64_to_cpu(from->di_lsn); - memcpy(to->di_pad2, from->di_pad2, sizeof(to->di_pad2)); - uuid_copy(&to->di_uuid, &from->di_uuid); + /* + * If the first lock we have locked is in the AIL, we must TRY to get + * the second lock. If we can't get it, we must release the first one + * and try again. + */ + lp = (xfs_log_item_t *)ip0->i_itemp; + if (lp && (lp->li_flags & XFS_LI_IN_AIL)) { + if (!xfs_ilock_nowait(ip1, xfs_lock_inumorder(lock_mode, 1))) { + xfs_iunlock(ip0, lock_mode); + if ((++attempts % 5) == 0) + delay(1); /* Don't just spin the CPU */ + goto again; + } + } else { + xfs_ilock(ip1, xfs_lock_inumorder(lock_mode, 1)); } } + void -xfs_dinode_to_disk( - xfs_dinode_t *to, - xfs_icdinode_t *from) +__xfs_iflock( + struct xfs_inode *ip) { - to->di_magic = cpu_to_be16(from->di_magic); - to->di_mode = cpu_to_be16(from->di_mode); - to->di_version = from ->di_version; - to->di_format = from->di_format; - to->di_onlink = cpu_to_be16(from->di_onlink); - to->di_uid = cpu_to_be32(from->di_uid); - to->di_gid = cpu_to_be32(from->di_gid); - to->di_nlink = cpu_to_be32(from->di_nlink); - to->di_projid_lo = cpu_to_be16(from->di_projid_lo); - to->di_projid_hi = cpu_to_be16(from->di_projid_hi); - memcpy(to->di_pad, from->di_pad, sizeof(to->di_pad)); - to->di_atime.t_sec = cpu_to_be32(from->di_atime.t_sec); - to->di_atime.t_nsec = cpu_to_be32(from->di_atime.t_nsec); - to->di_mtime.t_sec = cpu_to_be32(from->di_mtime.t_sec); - to->di_mtime.t_nsec = cpu_to_be32(from->di_mtime.t_nsec); - to->di_ctime.t_sec = cpu_to_be32(from->di_ctime.t_sec); - to->di_ctime.t_nsec = cpu_to_be32(from->di_ctime.t_nsec); - to->di_size = cpu_to_be64(from->di_size); - to->di_nblocks = cpu_to_be64(from->di_nblocks); - to->di_extsize = cpu_to_be32(from->di_extsize); - to->di_nextents = cpu_to_be32(from->di_nextents); - to->di_anextents = cpu_to_be16(from->di_anextents); - to->di_forkoff = from->di_forkoff; - to->di_aformat = from->di_aformat; - to->di_dmevmask = cpu_to_be32(from->di_dmevmask); - to->di_dmstate = cpu_to_be16(from->di_dmstate); - to->di_flags = cpu_to_be16(from->di_flags); - to->di_gen = cpu_to_be32(from->di_gen); - - if (from->di_version == 3) { - to->di_changecount = cpu_to_be64(from->di_changecount); - to->di_crtime.t_sec = cpu_to_be32(from->di_crtime.t_sec); - to->di_crtime.t_nsec = cpu_to_be32(from->di_crtime.t_nsec); - to->di_flags2 = cpu_to_be64(from->di_flags2); - to->di_ino = cpu_to_be64(from->di_ino); - to->di_lsn = cpu_to_be64(from->di_lsn); - memcpy(to->di_pad2, from->di_pad2, sizeof(to->di_pad2)); - uuid_copy(&to->di_uuid, &from->di_uuid); - to->di_flushiter = 0; - } else { - to->di_flushiter = cpu_to_be16(from->di_flushiter); - } + wait_queue_head_t *wq = bit_waitqueue(&ip->i_flags, __XFS_IFLOCK_BIT); + DEFINE_WAIT_BIT(wait, &ip->i_flags, __XFS_IFLOCK_BIT); + + do { + prepare_to_wait_exclusive(wq, &wait.wait, TASK_UNINTERRUPTIBLE); + if (xfs_isiflocked(ip)) + io_schedule(); + } while (!xfs_iflock_nowait(ip)); + + finish_wait(wq, &wait.wait); } STATIC uint @@ -987,235 +567,50 @@ xfs_dic2xflags( (XFS_DFORK_Q(dip) ? XFS_XFLAG_HASATTR : 0); } -static bool -xfs_dinode_verify( - struct xfs_mount *mp, - struct xfs_inode *ip, - struct xfs_dinode *dip) -{ - if (dip->di_magic != cpu_to_be16(XFS_DINODE_MAGIC)) - return false; - - /* only version 3 or greater inodes are extensively verified here */ - if (dip->di_version < 3) - return true; - - if (!xfs_sb_version_hascrc(&mp->m_sb)) - return false; - if (!xfs_verify_cksum((char *)dip, mp->m_sb.sb_inodesize, - offsetof(struct xfs_dinode, di_crc))) - return false; - if (be64_to_cpu(dip->di_ino) != ip->i_ino) - return false; - if (!uuid_equal(&dip->di_uuid, &mp->m_sb.sb_uuid)) - return false; - return true; -} - -void -xfs_dinode_calc_crc( - struct xfs_mount *mp, - struct xfs_dinode *dip) -{ - __uint32_t crc; - - if (dip->di_version < 3) - return; - - ASSERT(xfs_sb_version_hascrc(&mp->m_sb)); - crc = xfs_start_cksum((char *)dip, mp->m_sb.sb_inodesize, - offsetof(struct xfs_dinode, di_crc)); - dip->di_crc = xfs_end_cksum(crc); -} - /* - * Read the disk inode attributes into the in-core inode structure. - * - * For version 5 superblocks, if we are initialising a new inode and we are not - * utilising the XFS_MOUNT_IKEEP inode cluster mode, we can simple build the new - * inode core with a random generation number. If we are keeping inodes around, - * we need to read the inode cluster to get the existing generation number off - * disk. Further, if we are using version 4 superblocks (i.e. v1/v2 inode - * format) then log recovery is dependent on the di_flushiter field being - * initialised from the current on-disk value and hence we must also read the - * inode off disk. + * Lookups up an inode from "name". If ci_name is not NULL, then a CI match + * is allowed, otherwise it has to be an exact match. If a CI match is found, + * ci_name->name will point to a the actual name (caller must free) or + * will be set to NULL if an exact match is found. */ int -xfs_iread( - xfs_mount_t *mp, - xfs_trans_t *tp, - xfs_inode_t *ip, - uint iget_flags) +xfs_lookup( + xfs_inode_t *dp, + struct xfs_name *name, + xfs_inode_t **ipp, + struct xfs_name *ci_name) { - xfs_buf_t *bp; - xfs_dinode_t *dip; - int error; - - /* - * Fill in the location information in the in-core inode. - */ - error = xfs_imap(mp, tp, ip->i_ino, &ip->i_imap, iget_flags); - if (error) - return error; - - /* shortcut IO on inode allocation if possible */ - if ((iget_flags & XFS_IGET_CREATE) && - xfs_sb_version_hascrc(&mp->m_sb) && - !(mp->m_flags & XFS_MOUNT_IKEEP)) { - /* initialise the on-disk inode core */ - memset(&ip->i_d, 0, sizeof(ip->i_d)); - ip->i_d.di_magic = XFS_DINODE_MAGIC; - ip->i_d.di_gen = prandom_u32(); - if (xfs_sb_version_hascrc(&mp->m_sb)) { - ip->i_d.di_version = 3; - ip->i_d.di_ino = ip->i_ino; - uuid_copy(&ip->i_d.di_uuid, &mp->m_sb.sb_uuid); - } else - ip->i_d.di_version = 2; - return 0; - } - - /* - * Get pointers to the on-disk inode and the buffer containing it. - */ - error = xfs_imap_to_bp(mp, tp, &ip->i_imap, &dip, &bp, 0, iget_flags); - if (error) - return error; + xfs_ino_t inum; + int error; + uint lock_mode; - /* even unallocated inodes are verified */ - if (!xfs_dinode_verify(mp, ip, dip)) { - xfs_alert(mp, "%s: validation failed for inode %lld failed", - __func__, ip->i_ino); + trace_xfs_lookup(dp, name); - XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, dip); - error = XFS_ERROR(EFSCORRUPTED); - goto out_brelse; - } + if (XFS_FORCED_SHUTDOWN(dp->i_mount)) + return XFS_ERROR(EIO); - /* - * If the on-disk inode is already linked to a directory - * entry, copy all of the inode into the in-core inode. - * xfs_iformat() handles copying in the inode format - * specific information. - * Otherwise, just get the truly permanent information. - */ - if (dip->di_mode) { - xfs_dinode_from_disk(&ip->i_d, dip); - error = xfs_iformat(ip, dip); - if (error) { -#ifdef DEBUG - xfs_alert(mp, "%s: xfs_iformat() returned error %d", - __func__, error); -#endif /* DEBUG */ - goto out_brelse; - } - } else { - /* - * Partial initialisation of the in-core inode. Just the bits - * that xfs_ialloc won't overwrite or relies on being correct. - */ - ip->i_d.di_magic = be16_to_cpu(dip->di_magic); - ip->i_d.di_version = dip->di_version; - ip->i_d.di_gen = be32_to_cpu(dip->di_gen); - ip->i_d.di_flushiter = be16_to_cpu(dip->di_flushiter); - - if (dip->di_version == 3) { - ip->i_d.di_ino = be64_to_cpu(dip->di_ino); - uuid_copy(&ip->i_d.di_uuid, &dip->di_uuid); - } + lock_mode = xfs_ilock_map_shared(dp); + error = xfs_dir_lookup(NULL, dp, name, &inum, ci_name); + xfs_iunlock_map_shared(dp, lock_mode); - /* - * Make sure to pull in the mode here as well in - * case the inode is released without being used. - * This ensures that xfs_inactive() will see that - * the inode is already free and not try to mess - * with the uninitialized part of it. - */ - ip->i_d.di_mode = 0; - } - - /* - * The inode format changed when we moved the link count and - * made it 32 bits long. If this is an old format inode, - * convert it in memory to look like a new one. If it gets - * flushed to disk we will convert back before flushing or - * logging it. We zero out the new projid field and the old link - * count field. We'll handle clearing the pad field (the remains - * of the old uuid field) when we actually convert the inode to - * the new format. We don't change the version number so that we - * can distinguish this from a real new format inode. - */ - if (ip->i_d.di_version == 1) { - ip->i_d.di_nlink = ip->i_d.di_onlink; - ip->i_d.di_onlink = 0; - xfs_set_projid(ip, 0); - } + if (error) + goto out; - ip->i_delayed_blks = 0; + error = xfs_iget(dp->i_mount, NULL, inum, 0, 0, ipp); + if (error) + goto out_free_name; - /* - * Mark the buffer containing the inode as something to keep - * around for a while. This helps to keep recently accessed - * meta-data in-core longer. - */ - xfs_buf_set_ref(bp, XFS_INO_REF); + return 0; - /* - * Use xfs_trans_brelse() to release the buffer containing the on-disk - * inode, because it was acquired with xfs_trans_read_buf() in - * xfs_imap_to_bp() above. If tp is NULL, this is just a normal - * brelse(). If we're within a transaction, then xfs_trans_brelse() - * will only release the buffer if it is not dirty within the - * transaction. It will be OK to release the buffer in this case, - * because inodes on disk are never destroyed and we will be locking the - * new in-core inode before putting it in the cache where other - * processes can find it. Thus we don't have to worry about the inode - * being changed just because we released the buffer. - */ - out_brelse: - xfs_trans_brelse(tp, bp); +out_free_name: + if (ci_name) + kmem_free(ci_name->name); +out: + *ipp = NULL; return error; } /* - * Read in extents from a btree-format inode. - * Allocate and fill in if_extents. Real work is done in xfs_bmap.c. - */ -int -xfs_iread_extents( - xfs_trans_t *tp, - xfs_inode_t *ip, - int whichfork) -{ - int error; - xfs_ifork_t *ifp; - xfs_extnum_t nextents; - - if (unlikely(XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE)) { - XFS_ERROR_REPORT("xfs_iread_extents", XFS_ERRLEVEL_LOW, - ip->i_mount); - return XFS_ERROR(EFSCORRUPTED); - } - nextents = XFS_IFORK_NEXTENTS(ip, whichfork); - ifp = XFS_IFORK_PTR(ip, whichfork); - - /* - * We know that the size is valid (it's checked in iformat_btree) - */ - ifp->if_bytes = ifp->if_real_bytes = 0; - ifp->if_flags |= XFS_IFEXTENTS; - xfs_iext_add(ifp, 0, nextents); - error = xfs_bmap_read_extents(tp, ip, whichfork); - if (error) { - xfs_iext_destroy(ifp); - ifp->if_flags &= ~XFS_IFEXTENTS; - return error; - } - xfs_validate_extents(ifp, nextents, XFS_EXTFMT_INODE(ip)); - return 0; -} - -/* * Allocate an inode on disk and return a copy of its in-core version. * The in-core inode is locked exclusively. Set mode, nlink, and rdev * appropriately within the inode. The uid and gid for the inode are @@ -1295,8 +690,8 @@ xfs_ialloc( ip->i_d.di_onlink = 0; ip->i_d.di_nlink = nlink; ASSERT(ip->i_d.di_nlink == nlink); - ip->i_d.di_uid = current_fsuid(); - ip->i_d.di_gid = current_fsgid(); + ip->i_d.di_uid = xfs_kuid_to_uid(current_fsuid()); + ip->i_d.di_gid = xfs_kgid_to_gid(current_fsgid()); xfs_set_projid(ip, prid); memset(&(ip->i_d.di_pad[0]), 0, sizeof(ip->i_d.di_pad)); @@ -1335,7 +730,7 @@ xfs_ialloc( */ if ((irix_sgid_inherit) && (ip->i_d.di_mode & S_ISGID) && - (!in_group_p((gid_t)ip->i_d.di_gid))) { + (!in_group_p(xfs_gid_to_kgid(ip->i_d.di_gid)))) { ip->i_d.di_mode &= ~S_ISGID; } @@ -1467,6 +862,583 @@ xfs_ialloc( } /* + * Allocates a new inode from disk and return a pointer to the + * incore copy. This routine will internally commit the current + * transaction and allocate a new one if the Space Manager needed + * to do an allocation to replenish the inode free-list. + * + * This routine is designed to be called from xfs_create and + * xfs_create_dir. + * + */ +int +xfs_dir_ialloc( + xfs_trans_t **tpp, /* input: current transaction; + output: may be a new transaction. */ + xfs_inode_t *dp, /* directory within whose allocate + the inode. */ + umode_t mode, + xfs_nlink_t nlink, + xfs_dev_t rdev, + prid_t prid, /* project id */ + int okalloc, /* ok to allocate new space */ + xfs_inode_t **ipp, /* pointer to inode; it will be + locked. */ + int *committed) + +{ + xfs_trans_t *tp; + xfs_trans_t *ntp; + xfs_inode_t *ip; + xfs_buf_t *ialloc_context = NULL; + int code; + void *dqinfo; + uint tflags; + + tp = *tpp; + ASSERT(tp->t_flags & XFS_TRANS_PERM_LOG_RES); + + /* + * xfs_ialloc will return a pointer to an incore inode if + * the Space Manager has an available inode on the free + * list. Otherwise, it will do an allocation and replenish + * the freelist. Since we can only do one allocation per + * transaction without deadlocks, we will need to commit the + * current transaction and start a new one. We will then + * need to call xfs_ialloc again to get the inode. + * + * If xfs_ialloc did an allocation to replenish the freelist, + * it returns the bp containing the head of the freelist as + * ialloc_context. We will hold a lock on it across the + * transaction commit so that no other process can steal + * the inode(s) that we've just allocated. + */ + code = xfs_ialloc(tp, dp, mode, nlink, rdev, prid, okalloc, + &ialloc_context, &ip); + + /* + * Return an error if we were unable to allocate a new inode. + * This should only happen if we run out of space on disk or + * encounter a disk error. + */ + if (code) { + *ipp = NULL; + return code; + } + if (!ialloc_context && !ip) { + *ipp = NULL; + return XFS_ERROR(ENOSPC); + } + + /* + * If the AGI buffer is non-NULL, then we were unable to get an + * inode in one operation. We need to commit the current + * transaction and call xfs_ialloc() again. It is guaranteed + * to succeed the second time. + */ + if (ialloc_context) { + struct xfs_trans_res tres; + + /* + * Normally, xfs_trans_commit releases all the locks. + * We call bhold to hang on to the ialloc_context across + * the commit. Holding this buffer prevents any other + * processes from doing any allocations in this + * allocation group. + */ + xfs_trans_bhold(tp, ialloc_context); + /* + * Save the log reservation so we can use + * them in the next transaction. + */ + tres.tr_logres = xfs_trans_get_log_res(tp); + tres.tr_logcount = xfs_trans_get_log_count(tp); + + /* + * We want the quota changes to be associated with the next + * transaction, NOT this one. So, detach the dqinfo from this + * and attach it to the next transaction. + */ + dqinfo = NULL; + tflags = 0; + if (tp->t_dqinfo) { + dqinfo = (void *)tp->t_dqinfo; + tp->t_dqinfo = NULL; + tflags = tp->t_flags & XFS_TRANS_DQ_DIRTY; + tp->t_flags &= ~(XFS_TRANS_DQ_DIRTY); + } + + ntp = xfs_trans_dup(tp); + code = xfs_trans_commit(tp, 0); + tp = ntp; + if (committed != NULL) { + *committed = 1; + } + /* + * If we get an error during the commit processing, + * release the buffer that is still held and return + * to the caller. + */ + if (code) { + xfs_buf_relse(ialloc_context); + if (dqinfo) { + tp->t_dqinfo = dqinfo; + xfs_trans_free_dqinfo(tp); + } + *tpp = ntp; + *ipp = NULL; + return code; + } + + /* + * transaction commit worked ok so we can drop the extra ticket + * reference that we gained in xfs_trans_dup() + */ + xfs_log_ticket_put(tp->t_ticket); + tres.tr_logflags = XFS_TRANS_PERM_LOG_RES; + code = xfs_trans_reserve(tp, &tres, 0, 0); + + /* + * Re-attach the quota info that we detached from prev trx. + */ + if (dqinfo) { + tp->t_dqinfo = dqinfo; + tp->t_flags |= tflags; + } + + if (code) { + xfs_buf_relse(ialloc_context); + *tpp = ntp; + *ipp = NULL; + return code; + } + xfs_trans_bjoin(tp, ialloc_context); + + /* + * Call ialloc again. Since we've locked out all + * other allocations in this allocation group, + * this call should always succeed. + */ + code = xfs_ialloc(tp, dp, mode, nlink, rdev, prid, + okalloc, &ialloc_context, &ip); + + /* + * If we get an error at this point, return to the caller + * so that the current transaction can be aborted. + */ + if (code) { + *tpp = tp; + *ipp = NULL; + return code; + } + ASSERT(!ialloc_context && ip); + + } else { + if (committed != NULL) + *committed = 0; + } + + *ipp = ip; + *tpp = tp; + + return 0; +} + +/* + * Decrement the link count on an inode & log the change. + * If this causes the link count to go to zero, initiate the + * logging activity required to truncate a file. + */ +int /* error */ +xfs_droplink( + xfs_trans_t *tp, + xfs_inode_t *ip) +{ + int error; + + xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG); + + ASSERT (ip->i_d.di_nlink > 0); + ip->i_d.di_nlink--; + drop_nlink(VFS_I(ip)); + xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); + + error = 0; + if (ip->i_d.di_nlink == 0) { + /* + * We're dropping the last link to this file. + * Move the on-disk inode to the AGI unlinked list. + * From xfs_inactive() we will pull the inode from + * the list and free it. + */ + error = xfs_iunlink(tp, ip); + } + return error; +} + +/* + * This gets called when the inode's version needs to be changed from 1 to 2. + * Currently this happens when the nlink field overflows the old 16-bit value + * or when chproj is called to change the project for the first time. + * As a side effect the superblock version will also get rev'd + * to contain the NLINK bit. + */ +void +xfs_bump_ino_vers2( + xfs_trans_t *tp, + xfs_inode_t *ip) +{ + xfs_mount_t *mp; + + ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); + ASSERT(ip->i_d.di_version == 1); + + ip->i_d.di_version = 2; + ip->i_d.di_onlink = 0; + memset(&(ip->i_d.di_pad[0]), 0, sizeof(ip->i_d.di_pad)); + mp = tp->t_mountp; + if (!xfs_sb_version_hasnlink(&mp->m_sb)) { + spin_lock(&mp->m_sb_lock); + if (!xfs_sb_version_hasnlink(&mp->m_sb)) { + xfs_sb_version_addnlink(&mp->m_sb); + spin_unlock(&mp->m_sb_lock); + xfs_mod_sb(tp, XFS_SB_VERSIONNUM); + } else { + spin_unlock(&mp->m_sb_lock); + } + } + /* Caller must log the inode */ +} + +/* + * Increment the link count on an inode & log the change. + */ +int +xfs_bumplink( + xfs_trans_t *tp, + xfs_inode_t *ip) +{ + xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG); + + ASSERT(ip->i_d.di_nlink > 0); + ip->i_d.di_nlink++; + inc_nlink(VFS_I(ip)); + if ((ip->i_d.di_version == 1) && + (ip->i_d.di_nlink > XFS_MAXLINK_1)) { + /* + * The inode has increased its number of links beyond + * what can fit in an old format inode. It now needs + * to be converted to a version 2 inode with a 32 bit + * link count. If this is the first inode in the file + * system to do this, then we need to bump the superblock + * version number as well. + */ + xfs_bump_ino_vers2(tp, ip); + } + + xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); + return 0; +} + +int +xfs_create( + xfs_inode_t *dp, + struct xfs_name *name, + umode_t mode, + xfs_dev_t rdev, + xfs_inode_t **ipp) +{ + int is_dir = S_ISDIR(mode); + struct xfs_mount *mp = dp->i_mount; + struct xfs_inode *ip = NULL; + struct xfs_trans *tp = NULL; + int error; + xfs_bmap_free_t free_list; + xfs_fsblock_t first_block; + bool unlock_dp_on_error = false; + uint cancel_flags; + int committed; + prid_t prid; + struct xfs_dquot *udqp = NULL; + struct xfs_dquot *gdqp = NULL; + struct xfs_dquot *pdqp = NULL; + struct xfs_trans_res tres; + uint resblks; + + trace_xfs_create(dp, name); + + if (XFS_FORCED_SHUTDOWN(mp)) + return XFS_ERROR(EIO); + + if (dp->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) + prid = xfs_get_projid(dp); + else + prid = XFS_PROJID_DEFAULT; + + /* + * Make sure that we have allocated dquot(s) on disk. + */ + error = xfs_qm_vop_dqalloc(dp, xfs_kuid_to_uid(current_fsuid()), + xfs_kgid_to_gid(current_fsgid()), prid, + XFS_QMOPT_QUOTALL | XFS_QMOPT_INHERIT, + &udqp, &gdqp, &pdqp); + if (error) + return error; + + if (is_dir) { + rdev = 0; + resblks = XFS_MKDIR_SPACE_RES(mp, name->len); + tres.tr_logres = M_RES(mp)->tr_mkdir.tr_logres; + tres.tr_logcount = XFS_MKDIR_LOG_COUNT; + tp = xfs_trans_alloc(mp, XFS_TRANS_MKDIR); + } else { + resblks = XFS_CREATE_SPACE_RES(mp, name->len); + tres.tr_logres = M_RES(mp)->tr_create.tr_logres; + tres.tr_logcount = XFS_CREATE_LOG_COUNT; + tp = xfs_trans_alloc(mp, XFS_TRANS_CREATE); + } + + cancel_flags = XFS_TRANS_RELEASE_LOG_RES; + + /* + * Initially assume that the file does not exist and + * reserve the resources for that case. If that is not + * the case we'll drop the one we have and get a more + * appropriate transaction later. + */ + tres.tr_logflags = XFS_TRANS_PERM_LOG_RES; + error = xfs_trans_reserve(tp, &tres, resblks, 0); + if (error == ENOSPC) { + /* flush outstanding delalloc blocks and retry */ + xfs_flush_inodes(mp); + error = xfs_trans_reserve(tp, &tres, resblks, 0); + } + if (error == ENOSPC) { + /* No space at all so try a "no-allocation" reservation */ + resblks = 0; + error = xfs_trans_reserve(tp, &tres, 0, 0); + } + if (error) { + cancel_flags = 0; + goto out_trans_cancel; + } + + xfs_ilock(dp, XFS_ILOCK_EXCL | XFS_ILOCK_PARENT); + unlock_dp_on_error = true; + + xfs_bmap_init(&free_list, &first_block); + + /* + * Reserve disk quota and the inode. + */ + error = xfs_trans_reserve_quota(tp, mp, udqp, gdqp, + pdqp, resblks, 1, 0); + if (error) + goto out_trans_cancel; + + error = xfs_dir_canenter(tp, dp, name, resblks); + if (error) + goto out_trans_cancel; + + /* + * A newly created regular or special file just has one directory + * entry pointing to them, but a directory also the "." entry + * pointing to itself. + */ + error = xfs_dir_ialloc(&tp, dp, mode, is_dir ? 2 : 1, rdev, + prid, resblks > 0, &ip, &committed); + if (error) { + if (error == ENOSPC) + goto out_trans_cancel; + goto out_trans_abort; + } + + /* + * Now we join the directory inode to the transaction. We do not do it + * earlier because xfs_dir_ialloc might commit the previous transaction + * (and release all the locks). An error from here on will result in + * the transaction cancel unlocking dp so don't do it explicitly in the + * error path. + */ + xfs_trans_ijoin(tp, dp, XFS_ILOCK_EXCL); + unlock_dp_on_error = false; + + error = xfs_dir_createname(tp, dp, name, ip->i_ino, + &first_block, &free_list, resblks ? + resblks - XFS_IALLOC_SPACE_RES(mp) : 0); + if (error) { + ASSERT(error != ENOSPC); + goto out_trans_abort; + } + xfs_trans_ichgtime(tp, dp, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG); + xfs_trans_log_inode(tp, dp, XFS_ILOG_CORE); + + if (is_dir) { + error = xfs_dir_init(tp, ip, dp); + if (error) + goto out_bmap_cancel; + + error = xfs_bumplink(tp, dp); + if (error) + goto out_bmap_cancel; + } + + /* + * If this is a synchronous mount, make sure that the + * create transaction goes to disk before returning to + * the user. + */ + if (mp->m_flags & (XFS_MOUNT_WSYNC|XFS_MOUNT_DIRSYNC)) + xfs_trans_set_sync(tp); + + /* + * Attach the dquot(s) to the inodes and modify them incore. + * These ids of the inode couldn't have changed since the new + * inode has been locked ever since it was created. + */ + xfs_qm_vop_create_dqattach(tp, ip, udqp, gdqp, pdqp); + + error = xfs_bmap_finish(&tp, &free_list, &committed); + if (error) + goto out_bmap_cancel; + + error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES); + if (error) + goto out_release_inode; + + xfs_qm_dqrele(udqp); + xfs_qm_dqrele(gdqp); + xfs_qm_dqrele(pdqp); + + *ipp = ip; + return 0; + + out_bmap_cancel: + xfs_bmap_cancel(&free_list); + out_trans_abort: + cancel_flags |= XFS_TRANS_ABORT; + out_trans_cancel: + xfs_trans_cancel(tp, cancel_flags); + out_release_inode: + /* + * Wait until after the current transaction is aborted to + * release the inode. This prevents recursive transactions + * and deadlocks from xfs_inactive. + */ + if (ip) + IRELE(ip); + + xfs_qm_dqrele(udqp); + xfs_qm_dqrele(gdqp); + xfs_qm_dqrele(pdqp); + + if (unlock_dp_on_error) + xfs_iunlock(dp, XFS_ILOCK_EXCL); + return error; +} + +int +xfs_link( + xfs_inode_t *tdp, + xfs_inode_t *sip, + struct xfs_name *target_name) +{ + xfs_mount_t *mp = tdp->i_mount; + xfs_trans_t *tp; + int error; + xfs_bmap_free_t free_list; + xfs_fsblock_t first_block; + int cancel_flags; + int committed; + int resblks; + + trace_xfs_link(tdp, target_name); + + ASSERT(!S_ISDIR(sip->i_d.di_mode)); + + if (XFS_FORCED_SHUTDOWN(mp)) + return XFS_ERROR(EIO); + + error = xfs_qm_dqattach(sip, 0); + if (error) + goto std_return; + + error = xfs_qm_dqattach(tdp, 0); + if (error) + goto std_return; + + tp = xfs_trans_alloc(mp, XFS_TRANS_LINK); + cancel_flags = XFS_TRANS_RELEASE_LOG_RES; + resblks = XFS_LINK_SPACE_RES(mp, target_name->len); + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_link, resblks, 0); + if (error == ENOSPC) { + resblks = 0; + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_link, 0, 0); + } + if (error) { + cancel_flags = 0; + goto error_return; + } + + xfs_lock_two_inodes(sip, tdp, XFS_ILOCK_EXCL); + + xfs_trans_ijoin(tp, sip, XFS_ILOCK_EXCL); + xfs_trans_ijoin(tp, tdp, XFS_ILOCK_EXCL); + + /* + * If we are using project inheritance, we only allow hard link + * creation in our tree when the project IDs are the same; else + * the tree quota mechanism could be circumvented. + */ + if (unlikely((tdp->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) && + (xfs_get_projid(tdp) != xfs_get_projid(sip)))) { + error = XFS_ERROR(EXDEV); + goto error_return; + } + + error = xfs_dir_canenter(tp, tdp, target_name, resblks); + if (error) + goto error_return; + + xfs_bmap_init(&free_list, &first_block); + + error = xfs_dir_createname(tp, tdp, target_name, sip->i_ino, + &first_block, &free_list, resblks); + if (error) + goto abort_return; + xfs_trans_ichgtime(tp, tdp, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG); + xfs_trans_log_inode(tp, tdp, XFS_ILOG_CORE); + + error = xfs_bumplink(tp, sip); + if (error) + goto abort_return; + + /* + * If this is a synchronous mount, make sure that the + * link transaction goes to disk before returning to + * the user. + */ + if (mp->m_flags & (XFS_MOUNT_WSYNC|XFS_MOUNT_DIRSYNC)) { + xfs_trans_set_sync(tp); + } + + error = xfs_bmap_finish (&tp, &free_list, &committed); + if (error) { + xfs_bmap_cancel(&free_list); + goto abort_return; + } + + return xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES); + + abort_return: + cancel_flags |= XFS_TRANS_ABORT; + error_return: + xfs_trans_cancel(tp, cancel_flags); + std_return: + return error; +} + +/* * Free up the underlying blocks past new_size. The new size must be smaller * than the current size. This routine can be used both for the attribute and * data fork, and does not modify the inode size, which is left to the caller. @@ -1576,10 +1548,7 @@ xfs_itruncate_extents( * reference that we gained in xfs_trans_dup() */ xfs_log_ticket_put(tp->t_ticket); - error = xfs_trans_reserve(tp, 0, - XFS_ITRUNCATE_LOG_RES(mp), 0, - XFS_TRANS_PERM_LOG_RES, - XFS_ITRUNCATE_LOG_COUNT); + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_itruncate, 0, 0); if (error) goto out; } @@ -1605,6 +1574,271 @@ out_bmap_cancel: goto out; } +int +xfs_release( + xfs_inode_t *ip) +{ + xfs_mount_t *mp = ip->i_mount; + int error; + + if (!S_ISREG(ip->i_d.di_mode) || (ip->i_d.di_mode == 0)) + return 0; + + /* If this is a read-only mount, don't do this (would generate I/O) */ + if (mp->m_flags & XFS_MOUNT_RDONLY) + return 0; + + if (!XFS_FORCED_SHUTDOWN(mp)) { + int truncated; + + /* + * If we are using filestreams, and we have an unlinked + * file that we are processing the last close on, then nothing + * will be able to reopen and write to this file. Purge this + * inode from the filestreams cache so that it doesn't delay + * teardown of the inode. + */ + if ((ip->i_d.di_nlink == 0) && xfs_inode_is_filestream(ip)) + xfs_filestream_deassociate(ip); + + /* + * If we previously truncated this file and removed old data + * in the process, we want to initiate "early" writeout on + * the last close. This is an attempt to combat the notorious + * NULL files problem which is particularly noticeable from a + * truncate down, buffered (re-)write (delalloc), followed by + * a crash. What we are effectively doing here is + * significantly reducing the time window where we'd otherwise + * be exposed to that problem. + */ + truncated = xfs_iflags_test_and_clear(ip, XFS_ITRUNCATED); + if (truncated) { + xfs_iflags_clear(ip, XFS_IDIRTY_RELEASE); + if (VN_DIRTY(VFS_I(ip)) && ip->i_delayed_blks > 0) { + error = -filemap_flush(VFS_I(ip)->i_mapping); + if (error) + return error; + } + } + } + + if (ip->i_d.di_nlink == 0) + return 0; + + if (xfs_can_free_eofblocks(ip, false)) { + + /* + * If we can't get the iolock just skip truncating the blocks + * past EOF because we could deadlock with the mmap_sem + * otherwise. We'll get another chance to drop them once the + * last reference to the inode is dropped, so we'll never leak + * blocks permanently. + * + * Further, check if the inode is being opened, written and + * closed frequently and we have delayed allocation blocks + * outstanding (e.g. streaming writes from the NFS server), + * truncating the blocks past EOF will cause fragmentation to + * occur. + * + * In this case don't do the truncation, either, but we have to + * be careful how we detect this case. Blocks beyond EOF show + * up as i_delayed_blks even when the inode is clean, so we + * need to truncate them away first before checking for a dirty + * release. Hence on the first dirty close we will still remove + * the speculative allocation, but after that we will leave it + * in place. + */ + if (xfs_iflags_test(ip, XFS_IDIRTY_RELEASE)) + return 0; + + error = xfs_free_eofblocks(mp, ip, true); + if (error && error != EAGAIN) + return error; + + /* delalloc blocks after truncation means it really is dirty */ + if (ip->i_delayed_blks) + xfs_iflags_set(ip, XFS_IDIRTY_RELEASE); + } + return 0; +} + +/* + * xfs_inactive + * + * This is called when the vnode reference count for the vnode + * goes to zero. If the file has been unlinked, then it must + * now be truncated. Also, we clear all of the read-ahead state + * kept for the inode here since the file is now closed. + */ +int +xfs_inactive( + xfs_inode_t *ip) +{ + xfs_bmap_free_t free_list; + xfs_fsblock_t first_block; + int committed; + struct xfs_trans *tp; + struct xfs_mount *mp; + struct xfs_trans_res *resp; + int error; + int truncate = 0; + + /* + * If the inode is already free, then there can be nothing + * to clean up here. + */ + if (ip->i_d.di_mode == 0 || is_bad_inode(VFS_I(ip))) { + ASSERT(ip->i_df.if_real_bytes == 0); + ASSERT(ip->i_df.if_broot_bytes == 0); + return VN_INACTIVE_CACHE; + } + + mp = ip->i_mount; + + error = 0; + + /* If this is a read-only mount, don't do this (would generate I/O) */ + if (mp->m_flags & XFS_MOUNT_RDONLY) + goto out; + + if (ip->i_d.di_nlink != 0) { + /* + * force is true because we are evicting an inode from the + * cache. Post-eof blocks must be freed, lest we end up with + * broken free space accounting. + */ + if (xfs_can_free_eofblocks(ip, true)) { + error = xfs_free_eofblocks(mp, ip, false); + if (error) + return VN_INACTIVE_CACHE; + } + goto out; + } + + if (S_ISREG(ip->i_d.di_mode) && + (ip->i_d.di_size != 0 || XFS_ISIZE(ip) != 0 || + ip->i_d.di_nextents > 0 || ip->i_delayed_blks > 0)) + truncate = 1; + + error = xfs_qm_dqattach(ip, 0); + if (error) + return VN_INACTIVE_CACHE; + + tp = xfs_trans_alloc(mp, XFS_TRANS_INACTIVE); + resp = (truncate || S_ISLNK(ip->i_d.di_mode)) ? + &M_RES(mp)->tr_itruncate : &M_RES(mp)->tr_ifree; + + error = xfs_trans_reserve(tp, resp, 0, 0); + if (error) { + ASSERT(XFS_FORCED_SHUTDOWN(mp)); + xfs_trans_cancel(tp, 0); + return VN_INACTIVE_CACHE; + } + + xfs_ilock(ip, XFS_ILOCK_EXCL); + xfs_trans_ijoin(tp, ip, 0); + + if (S_ISLNK(ip->i_d.di_mode)) { + error = xfs_inactive_symlink(ip, &tp); + if (error) + goto out_cancel; + } else if (truncate) { + ip->i_d.di_size = 0; + xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); + + error = xfs_itruncate_extents(&tp, ip, XFS_DATA_FORK, 0); + if (error) + goto out_cancel; + + ASSERT(ip->i_d.di_nextents == 0); + } + + /* + * If there are attributes associated with the file then blow them away + * now. The code calls a routine that recursively deconstructs the + * attribute fork. We need to just commit the current transaction + * because we can't use it for xfs_attr_inactive(). + */ + if (ip->i_d.di_anextents > 0) { + ASSERT(ip->i_d.di_forkoff != 0); + + error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES); + if (error) + goto out_unlock; + + xfs_iunlock(ip, XFS_ILOCK_EXCL); + + error = xfs_attr_inactive(ip); + if (error) + goto out; + + tp = xfs_trans_alloc(mp, XFS_TRANS_INACTIVE); + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_ifree, 0, 0); + if (error) { + xfs_trans_cancel(tp, 0); + goto out; + } + + xfs_ilock(ip, XFS_ILOCK_EXCL); + xfs_trans_ijoin(tp, ip, 0); + } + + if (ip->i_afp) + xfs_idestroy_fork(ip, XFS_ATTR_FORK); + + ASSERT(ip->i_d.di_anextents == 0); + + /* + * Free the inode. + */ + xfs_bmap_init(&free_list, &first_block); + error = xfs_ifree(tp, ip, &free_list); + if (error) { + /* + * If we fail to free the inode, shut down. The cancel + * might do that, we need to make sure. Otherwise the + * inode might be lost for a long time or forever. + */ + if (!XFS_FORCED_SHUTDOWN(mp)) { + xfs_notice(mp, "%s: xfs_ifree returned error %d", + __func__, error); + xfs_force_shutdown(mp, SHUTDOWN_META_IO_ERROR); + } + xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES|XFS_TRANS_ABORT); + } else { + /* + * Credit the quota account(s). The inode is gone. + */ + xfs_trans_mod_dquot_byino(tp, ip, XFS_TRANS_DQ_ICOUNT, -1); + + /* + * Just ignore errors at this point. There is nothing we can + * do except to try to keep going. Make sure it's not a silent + * error. + */ + error = xfs_bmap_finish(&tp, &free_list, &committed); + if (error) + xfs_notice(mp, "%s: xfs_bmap_finish returned error %d", + __func__, error); + error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES); + if (error) + xfs_notice(mp, "%s: xfs_trans_commit returned error %d", + __func__, error); + } + + /* + * Release the dquots held by inode, if any. + */ + xfs_qm_dqdetach(ip); +out_unlock: + xfs_iunlock(ip, XFS_ILOCK_EXCL); +out: + return VN_INACTIVE_CACHE; +out_cancel: + xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES | XFS_TRANS_ABORT); + goto out_unlock; +} + /* * This is called when the inode's link count goes to 0. * We place the on-disk inode on a list in the AGI. It @@ -1861,7 +2095,7 @@ xfs_iunlink_remove( } /* - * A big issue when freeing the inode cluster is is that we _cannot_ skip any + * A big issue when freeing the inode cluster is that we _cannot_ skip any * inodes that are in memory - they all must be marked stale and attached to * the cluster buffer. */ @@ -2094,272 +2328,6 @@ xfs_ifree( } /* - * Reallocate the space for if_broot based on the number of records - * being added or deleted as indicated in rec_diff. Move the records - * and pointers in if_broot to fit the new size. When shrinking this - * will eliminate holes between the records and pointers created by - * the caller. When growing this will create holes to be filled in - * by the caller. - * - * The caller must not request to add more records than would fit in - * the on-disk inode root. If the if_broot is currently NULL, then - * if we adding records one will be allocated. The caller must also - * not request that the number of records go below zero, although - * it can go to zero. - * - * ip -- the inode whose if_broot area is changing - * ext_diff -- the change in the number of records, positive or negative, - * requested for the if_broot array. - */ -void -xfs_iroot_realloc( - xfs_inode_t *ip, - int rec_diff, - int whichfork) -{ - struct xfs_mount *mp = ip->i_mount; - int cur_max; - xfs_ifork_t *ifp; - struct xfs_btree_block *new_broot; - int new_max; - size_t new_size; - char *np; - char *op; - - /* - * Handle the degenerate case quietly. - */ - if (rec_diff == 0) { - return; - } - - ifp = XFS_IFORK_PTR(ip, whichfork); - if (rec_diff > 0) { - /* - * If there wasn't any memory allocated before, just - * allocate it now and get out. - */ - if (ifp->if_broot_bytes == 0) { - new_size = XFS_BMAP_BROOT_SPACE_CALC(mp, rec_diff); - ifp->if_broot = kmem_alloc(new_size, KM_SLEEP | KM_NOFS); - ifp->if_broot_bytes = (int)new_size; - return; - } - - /* - * If there is already an existing if_broot, then we need - * to realloc() it and shift the pointers to their new - * location. The records don't change location because - * they are kept butted up against the btree block header. - */ - cur_max = xfs_bmbt_maxrecs(mp, ifp->if_broot_bytes, 0); - new_max = cur_max + rec_diff; - new_size = XFS_BMAP_BROOT_SPACE_CALC(mp, new_max); - ifp->if_broot = kmem_realloc(ifp->if_broot, new_size, - XFS_BMAP_BROOT_SPACE_CALC(mp, cur_max), - KM_SLEEP | KM_NOFS); - op = (char *)XFS_BMAP_BROOT_PTR_ADDR(mp, ifp->if_broot, 1, - ifp->if_broot_bytes); - np = (char *)XFS_BMAP_BROOT_PTR_ADDR(mp, ifp->if_broot, 1, - (int)new_size); - ifp->if_broot_bytes = (int)new_size; - ASSERT(XFS_BMAP_BMDR_SPACE(ifp->if_broot) <= - XFS_IFORK_SIZE(ip, whichfork)); - memmove(np, op, cur_max * (uint)sizeof(xfs_dfsbno_t)); - return; - } - - /* - * rec_diff is less than 0. In this case, we are shrinking the - * if_broot buffer. It must already exist. If we go to zero - * records, just get rid of the root and clear the status bit. - */ - ASSERT((ifp->if_broot != NULL) && (ifp->if_broot_bytes > 0)); - cur_max = xfs_bmbt_maxrecs(mp, ifp->if_broot_bytes, 0); - new_max = cur_max + rec_diff; - ASSERT(new_max >= 0); - if (new_max > 0) - new_size = XFS_BMAP_BROOT_SPACE_CALC(mp, new_max); - else - new_size = 0; - if (new_size > 0) { - new_broot = kmem_alloc(new_size, KM_SLEEP | KM_NOFS); - /* - * First copy over the btree block header. - */ - memcpy(new_broot, ifp->if_broot, - XFS_BMBT_BLOCK_LEN(ip->i_mount)); - } else { - new_broot = NULL; - ifp->if_flags &= ~XFS_IFBROOT; - } - - /* - * Only copy the records and pointers if there are any. - */ - if (new_max > 0) { - /* - * First copy the records. - */ - op = (char *)XFS_BMBT_REC_ADDR(mp, ifp->if_broot, 1); - np = (char *)XFS_BMBT_REC_ADDR(mp, new_broot, 1); - memcpy(np, op, new_max * (uint)sizeof(xfs_bmbt_rec_t)); - - /* - * Then copy the pointers. - */ - op = (char *)XFS_BMAP_BROOT_PTR_ADDR(mp, ifp->if_broot, 1, - ifp->if_broot_bytes); - np = (char *)XFS_BMAP_BROOT_PTR_ADDR(mp, new_broot, 1, - (int)new_size); - memcpy(np, op, new_max * (uint)sizeof(xfs_dfsbno_t)); - } - kmem_free(ifp->if_broot); - ifp->if_broot = new_broot; - ifp->if_broot_bytes = (int)new_size; - if (ifp->if_broot) - ASSERT(XFS_BMAP_BMDR_SPACE(ifp->if_broot) <= - XFS_IFORK_SIZE(ip, whichfork)); - return; -} - - -/* - * This is called when the amount of space needed for if_data - * is increased or decreased. The change in size is indicated by - * the number of bytes that need to be added or deleted in the - * byte_diff parameter. - * - * If the amount of space needed has decreased below the size of the - * inline buffer, then switch to using the inline buffer. Otherwise, - * use kmem_realloc() or kmem_alloc() to adjust the size of the buffer - * to what is needed. - * - * ip -- the inode whose if_data area is changing - * byte_diff -- the change in the number of bytes, positive or negative, - * requested for the if_data array. - */ -void -xfs_idata_realloc( - xfs_inode_t *ip, - int byte_diff, - int whichfork) -{ - xfs_ifork_t *ifp; - int new_size; - int real_size; - - if (byte_diff == 0) { - return; - } - - ifp = XFS_IFORK_PTR(ip, whichfork); - new_size = (int)ifp->if_bytes + byte_diff; - ASSERT(new_size >= 0); - - if (new_size == 0) { - if (ifp->if_u1.if_data != ifp->if_u2.if_inline_data) { - kmem_free(ifp->if_u1.if_data); - } - ifp->if_u1.if_data = NULL; - real_size = 0; - } else if (new_size <= sizeof(ifp->if_u2.if_inline_data)) { - /* - * If the valid extents/data can fit in if_inline_ext/data, - * copy them from the malloc'd vector and free it. - */ - if (ifp->if_u1.if_data == NULL) { - ifp->if_u1.if_data = ifp->if_u2.if_inline_data; - } else if (ifp->if_u1.if_data != ifp->if_u2.if_inline_data) { - ASSERT(ifp->if_real_bytes != 0); - memcpy(ifp->if_u2.if_inline_data, ifp->if_u1.if_data, - new_size); - kmem_free(ifp->if_u1.if_data); - ifp->if_u1.if_data = ifp->if_u2.if_inline_data; - } - real_size = 0; - } else { - /* - * Stuck with malloc/realloc. - * For inline data, the underlying buffer must be - * a multiple of 4 bytes in size so that it can be - * logged and stay on word boundaries. We enforce - * that here. - */ - real_size = roundup(new_size, 4); - if (ifp->if_u1.if_data == NULL) { - ASSERT(ifp->if_real_bytes == 0); - ifp->if_u1.if_data = kmem_alloc(real_size, - KM_SLEEP | KM_NOFS); - } else if (ifp->if_u1.if_data != ifp->if_u2.if_inline_data) { - /* - * Only do the realloc if the underlying size - * is really changing. - */ - if (ifp->if_real_bytes != real_size) { - ifp->if_u1.if_data = - kmem_realloc(ifp->if_u1.if_data, - real_size, - ifp->if_real_bytes, - KM_SLEEP | KM_NOFS); - } - } else { - ASSERT(ifp->if_real_bytes == 0); - ifp->if_u1.if_data = kmem_alloc(real_size, - KM_SLEEP | KM_NOFS); - memcpy(ifp->if_u1.if_data, ifp->if_u2.if_inline_data, - ifp->if_bytes); - } - } - ifp->if_real_bytes = real_size; - ifp->if_bytes = new_size; - ASSERT(ifp->if_bytes <= XFS_IFORK_SIZE(ip, whichfork)); -} - -void -xfs_idestroy_fork( - xfs_inode_t *ip, - int whichfork) -{ - xfs_ifork_t *ifp; - - ifp = XFS_IFORK_PTR(ip, whichfork); - if (ifp->if_broot != NULL) { - kmem_free(ifp->if_broot); - ifp->if_broot = NULL; - } - - /* - * If the format is local, then we can't have an extents - * array so just look for an inline data array. If we're - * not local then we may or may not have an extents list, - * so check and free it up if we do. - */ - if (XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL) { - if ((ifp->if_u1.if_data != ifp->if_u2.if_inline_data) && - (ifp->if_u1.if_data != NULL)) { - ASSERT(ifp->if_real_bytes != 0); - kmem_free(ifp->if_u1.if_data); - ifp->if_u1.if_data = NULL; - ifp->if_real_bytes = 0; - } - } else if ((ifp->if_flags & XFS_IFEXTENTS) && - ((ifp->if_flags & XFS_IFEXTIREC) || - ((ifp->if_u1.if_extents != NULL) && - (ifp->if_u1.if_extents != ifp->if_u2.if_inline_ext)))) { - ASSERT(ifp->if_real_bytes != 0); - xfs_iext_destroy(ifp); - } - ASSERT(ifp->if_u1.if_extents == NULL || - ifp->if_u1.if_extents == ifp->if_u2.if_inline_ext); - ASSERT(ifp->if_real_bytes == 0); - if (whichfork == XFS_ATTR_FORK) { - kmem_zone_free(xfs_ifork_zone, ip->i_afp); - ip->i_afp = NULL; - } -} - -/* * This is called to unpin an inode. The caller must have the inode locked * in at least shared mode so that the buffer cannot be subsequently pinned * once someone is waiting for it to be unpinned. @@ -2402,162 +2370,471 @@ xfs_iunpin_wait( __xfs_iunpin_wait(ip); } -/* - * xfs_iextents_copy() - * - * This is called to copy the REAL extents (as opposed to the delayed - * allocation extents) from the inode into the given buffer. It - * returns the number of bytes copied into the buffer. - * - * If there are no delayed allocation extents, then we can just - * memcpy() the extents into the buffer. Otherwise, we need to - * examine each extent in turn and skip those which are delayed. - */ int -xfs_iextents_copy( - xfs_inode_t *ip, - xfs_bmbt_rec_t *dp, - int whichfork) +xfs_remove( + xfs_inode_t *dp, + struct xfs_name *name, + xfs_inode_t *ip) { - int copied; - int i; - xfs_ifork_t *ifp; - int nrecs; - xfs_fsblock_t start_block; + xfs_mount_t *mp = dp->i_mount; + xfs_trans_t *tp = NULL; + int is_dir = S_ISDIR(ip->i_d.di_mode); + int error = 0; + xfs_bmap_free_t free_list; + xfs_fsblock_t first_block; + int cancel_flags; + int committed; + int link_zero; + uint resblks; + uint log_count; - ifp = XFS_IFORK_PTR(ip, whichfork); - ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED)); - ASSERT(ifp->if_bytes > 0); + trace_xfs_remove(dp, name); + + if (XFS_FORCED_SHUTDOWN(mp)) + return XFS_ERROR(EIO); + + error = xfs_qm_dqattach(dp, 0); + if (error) + goto std_return; + + error = xfs_qm_dqattach(ip, 0); + if (error) + goto std_return; - nrecs = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); - XFS_BMAP_TRACE_EXLIST(ip, nrecs, whichfork); - ASSERT(nrecs > 0); + if (is_dir) { + tp = xfs_trans_alloc(mp, XFS_TRANS_RMDIR); + log_count = XFS_DEFAULT_LOG_COUNT; + } else { + tp = xfs_trans_alloc(mp, XFS_TRANS_REMOVE); + log_count = XFS_REMOVE_LOG_COUNT; + } + cancel_flags = XFS_TRANS_RELEASE_LOG_RES; /* - * There are some delayed allocation extents in the - * inode, so copy the extents one at a time and skip - * the delayed ones. There must be at least one - * non-delayed extent. + * We try to get the real space reservation first, + * allowing for directory btree deletion(s) implying + * possible bmap insert(s). If we can't get the space + * reservation then we use 0 instead, and avoid the bmap + * btree insert(s) in the directory code by, if the bmap + * insert tries to happen, instead trimming the LAST + * block from the directory. */ - copied = 0; - for (i = 0; i < nrecs; i++) { - xfs_bmbt_rec_host_t *ep = xfs_iext_get_ext(ifp, i); - start_block = xfs_bmbt_get_startblock(ep); - if (isnullstartblock(start_block)) { - /* - * It's a delayed allocation extent, so skip it. - */ - continue; + resblks = XFS_REMOVE_SPACE_RES(mp); + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_remove, resblks, 0); + if (error == ENOSPC) { + resblks = 0; + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_remove, 0, 0); + } + if (error) { + ASSERT(error != ENOSPC); + cancel_flags = 0; + goto out_trans_cancel; + } + + xfs_lock_two_inodes(dp, ip, XFS_ILOCK_EXCL); + + xfs_trans_ijoin(tp, dp, XFS_ILOCK_EXCL); + xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); + + /* + * If we're removing a directory perform some additional validation. + */ + if (is_dir) { + ASSERT(ip->i_d.di_nlink >= 2); + if (ip->i_d.di_nlink != 2) { + error = XFS_ERROR(ENOTEMPTY); + goto out_trans_cancel; } + if (!xfs_dir_isempty(ip)) { + error = XFS_ERROR(ENOTEMPTY); + goto out_trans_cancel; + } + } + + xfs_bmap_init(&free_list, &first_block); + error = xfs_dir_removename(tp, dp, name, ip->i_ino, + &first_block, &free_list, resblks); + if (error) { + ASSERT(error != ENOENT); + goto out_bmap_cancel; + } + xfs_trans_ichgtime(tp, dp, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG); - /* Translate to on disk format */ - put_unaligned(cpu_to_be64(ep->l0), &dp->l0); - put_unaligned(cpu_to_be64(ep->l1), &dp->l1); - dp++; - copied++; + if (is_dir) { + /* + * Drop the link from ip's "..". + */ + error = xfs_droplink(tp, dp); + if (error) + goto out_bmap_cancel; + + /* + * Drop the "." link from ip to self. + */ + error = xfs_droplink(tp, ip); + if (error) + goto out_bmap_cancel; + } else { + /* + * When removing a non-directory we need to log the parent + * inode here. For a directory this is done implicitly + * by the xfs_droplink call for the ".." entry. + */ + xfs_trans_log_inode(tp, dp, XFS_ILOG_CORE); } - ASSERT(copied != 0); - xfs_validate_extents(ifp, copied, XFS_EXTFMT_INODE(ip)); - return (copied * (uint)sizeof(xfs_bmbt_rec_t)); + /* + * Drop the link from dp to ip. + */ + error = xfs_droplink(tp, ip); + if (error) + goto out_bmap_cancel; + + /* + * Determine if this is the last link while + * we are in the transaction. + */ + link_zero = (ip->i_d.di_nlink == 0); + + /* + * If this is a synchronous mount, make sure that the + * remove transaction goes to disk before returning to + * the user. + */ + if (mp->m_flags & (XFS_MOUNT_WSYNC|XFS_MOUNT_DIRSYNC)) + xfs_trans_set_sync(tp); + + error = xfs_bmap_finish(&tp, &free_list, &committed); + if (error) + goto out_bmap_cancel; + + error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES); + if (error) + goto std_return; + + /* + * If we are using filestreams, kill the stream association. + * If the file is still open it may get a new one but that + * will get killed on last close in xfs_close() so we don't + * have to worry about that. + */ + if (!is_dir && link_zero && xfs_inode_is_filestream(ip)) + xfs_filestream_deassociate(ip); + + return 0; + + out_bmap_cancel: + xfs_bmap_cancel(&free_list); + cancel_flags |= XFS_TRANS_ABORT; + out_trans_cancel: + xfs_trans_cancel(tp, cancel_flags); + std_return: + return error; } /* - * Each of the following cases stores data into the same region - * of the on-disk inode, so only one of them can be valid at - * any given time. While it is possible to have conflicting formats - * and log flags, e.g. having XFS_ILOG_?DATA set when the fork is - * in EXTENTS format, this can only happen when the fork has - * changed formats after being modified but before being flushed. - * In these cases, the format always takes precedence, because the - * format indicates the current state of the fork. + * Enter all inodes for a rename transaction into a sorted array. */ -/*ARGSUSED*/ STATIC void -xfs_iflush_fork( - xfs_inode_t *ip, - xfs_dinode_t *dip, - xfs_inode_log_item_t *iip, - int whichfork, - xfs_buf_t *bp) -{ - char *cp; - xfs_ifork_t *ifp; - xfs_mount_t *mp; - static const short brootflag[2] = - { XFS_ILOG_DBROOT, XFS_ILOG_ABROOT }; - static const short dataflag[2] = - { XFS_ILOG_DDATA, XFS_ILOG_ADATA }; - static const short extflag[2] = - { XFS_ILOG_DEXT, XFS_ILOG_AEXT }; - - if (!iip) - return; - ifp = XFS_IFORK_PTR(ip, whichfork); - /* - * This can happen if we gave up in iformat in an error path, - * for the attribute fork. - */ - if (!ifp) { - ASSERT(whichfork == XFS_ATTR_FORK); - return; - } - cp = XFS_DFORK_PTR(dip, whichfork); - mp = ip->i_mount; - switch (XFS_IFORK_FORMAT(ip, whichfork)) { - case XFS_DINODE_FMT_LOCAL: - if ((iip->ili_fields & dataflag[whichfork]) && - (ifp->if_bytes > 0)) { - ASSERT(ifp->if_u1.if_data != NULL); - ASSERT(ifp->if_bytes <= XFS_IFORK_SIZE(ip, whichfork)); - memcpy(cp, ifp->if_u1.if_data, ifp->if_bytes); - } - break; +xfs_sort_for_rename( + xfs_inode_t *dp1, /* in: old (source) directory inode */ + xfs_inode_t *dp2, /* in: new (target) directory inode */ + xfs_inode_t *ip1, /* in: inode of old entry */ + xfs_inode_t *ip2, /* in: inode of new entry, if it + already exists, NULL otherwise. */ + xfs_inode_t **i_tab,/* out: array of inode returned, sorted */ + int *num_inodes) /* out: number of inodes in array */ +{ + xfs_inode_t *temp; + int i, j; - case XFS_DINODE_FMT_EXTENTS: - ASSERT((ifp->if_flags & XFS_IFEXTENTS) || - !(iip->ili_fields & extflag[whichfork])); - if ((iip->ili_fields & extflag[whichfork]) && - (ifp->if_bytes > 0)) { - ASSERT(xfs_iext_get_ext(ifp, 0)); - ASSERT(XFS_IFORK_NEXTENTS(ip, whichfork) > 0); - (void)xfs_iextents_copy(ip, (xfs_bmbt_rec_t *)cp, - whichfork); - } - break; + /* + * i_tab contains a list of pointers to inodes. We initialize + * the table here & we'll sort it. We will then use it to + * order the acquisition of the inode locks. + * + * Note that the table may contain duplicates. e.g., dp1 == dp2. + */ + i_tab[0] = dp1; + i_tab[1] = dp2; + i_tab[2] = ip1; + if (ip2) { + *num_inodes = 4; + i_tab[3] = ip2; + } else { + *num_inodes = 3; + i_tab[3] = NULL; + } - case XFS_DINODE_FMT_BTREE: - if ((iip->ili_fields & brootflag[whichfork]) && - (ifp->if_broot_bytes > 0)) { - ASSERT(ifp->if_broot != NULL); - ASSERT(XFS_BMAP_BMDR_SPACE(ifp->if_broot) <= - XFS_IFORK_SIZE(ip, whichfork)); - xfs_bmbt_to_bmdr(mp, ifp->if_broot, ifp->if_broot_bytes, - (xfs_bmdr_block_t *)cp, - XFS_DFORK_SIZE(dip, mp, whichfork)); + /* + * Sort the elements via bubble sort. (Remember, there are at + * most 4 elements to sort, so this is adequate.) + */ + for (i = 0; i < *num_inodes; i++) { + for (j = 1; j < *num_inodes; j++) { + if (i_tab[j]->i_ino < i_tab[j-1]->i_ino) { + temp = i_tab[j]; + i_tab[j] = i_tab[j-1]; + i_tab[j-1] = temp; + } } - break; + } +} + +/* + * xfs_rename + */ +int +xfs_rename( + xfs_inode_t *src_dp, + struct xfs_name *src_name, + xfs_inode_t *src_ip, + xfs_inode_t *target_dp, + struct xfs_name *target_name, + xfs_inode_t *target_ip) +{ + xfs_trans_t *tp = NULL; + xfs_mount_t *mp = src_dp->i_mount; + int new_parent; /* moving to a new dir */ + int src_is_directory; /* src_name is a directory */ + int error; + xfs_bmap_free_t free_list; + xfs_fsblock_t first_block; + int cancel_flags; + int committed; + xfs_inode_t *inodes[4]; + int spaceres; + int num_inodes; + + trace_xfs_rename(src_dp, target_dp, src_name, target_name); + + new_parent = (src_dp != target_dp); + src_is_directory = S_ISDIR(src_ip->i_d.di_mode); + + xfs_sort_for_rename(src_dp, target_dp, src_ip, target_ip, + inodes, &num_inodes); + + xfs_bmap_init(&free_list, &first_block); + tp = xfs_trans_alloc(mp, XFS_TRANS_RENAME); + cancel_flags = XFS_TRANS_RELEASE_LOG_RES; + spaceres = XFS_RENAME_SPACE_RES(mp, target_name->len); + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_rename, spaceres, 0); + if (error == ENOSPC) { + spaceres = 0; + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_rename, 0, 0); + } + if (error) { + xfs_trans_cancel(tp, 0); + goto std_return; + } + + /* + * Attach the dquots to the inodes + */ + error = xfs_qm_vop_rename_dqattach(inodes); + if (error) { + xfs_trans_cancel(tp, cancel_flags); + goto std_return; + } + + /* + * Lock all the participating inodes. Depending upon whether + * the target_name exists in the target directory, and + * whether the target directory is the same as the source + * directory, we can lock from 2 to 4 inodes. + */ + xfs_lock_inodes(inodes, num_inodes, XFS_ILOCK_EXCL); + + /* + * Join all the inodes to the transaction. From this point on, + * we can rely on either trans_commit or trans_cancel to unlock + * them. + */ + xfs_trans_ijoin(tp, src_dp, XFS_ILOCK_EXCL); + if (new_parent) + xfs_trans_ijoin(tp, target_dp, XFS_ILOCK_EXCL); + xfs_trans_ijoin(tp, src_ip, XFS_ILOCK_EXCL); + if (target_ip) + xfs_trans_ijoin(tp, target_ip, XFS_ILOCK_EXCL); + + /* + * If we are using project inheritance, we only allow renames + * into our tree when the project IDs are the same; else the + * tree quota mechanism would be circumvented. + */ + if (unlikely((target_dp->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) && + (xfs_get_projid(target_dp) != xfs_get_projid(src_ip)))) { + error = XFS_ERROR(EXDEV); + goto error_return; + } + + /* + * Set up the target. + */ + if (target_ip == NULL) { + /* + * If there's no space reservation, check the entry will + * fit before actually inserting it. + */ + error = xfs_dir_canenter(tp, target_dp, target_name, spaceres); + if (error) + goto error_return; + /* + * If target does not exist and the rename crosses + * directories, adjust the target directory link count + * to account for the ".." reference from the new entry. + */ + error = xfs_dir_createname(tp, target_dp, target_name, + src_ip->i_ino, &first_block, + &free_list, spaceres); + if (error == ENOSPC) + goto error_return; + if (error) + goto abort_return; + + xfs_trans_ichgtime(tp, target_dp, + XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG); - case XFS_DINODE_FMT_DEV: - if (iip->ili_fields & XFS_ILOG_DEV) { - ASSERT(whichfork == XFS_DATA_FORK); - xfs_dinode_put_rdev(dip, ip->i_df.if_u2.if_rdev); + if (new_parent && src_is_directory) { + error = xfs_bumplink(tp, target_dp); + if (error) + goto abort_return; + } + } else { /* target_ip != NULL */ + /* + * If target exists and it's a directory, check that both + * target and source are directories and that target can be + * destroyed, or that neither is a directory. + */ + if (S_ISDIR(target_ip->i_d.di_mode)) { + /* + * Make sure target dir is empty. + */ + if (!(xfs_dir_isempty(target_ip)) || + (target_ip->i_d.di_nlink > 2)) { + error = XFS_ERROR(EEXIST); + goto error_return; + } } - break; - case XFS_DINODE_FMT_UUID: - if (iip->ili_fields & XFS_ILOG_UUID) { - ASSERT(whichfork == XFS_DATA_FORK); - memcpy(XFS_DFORK_DPTR(dip), - &ip->i_df.if_u2.if_uuid, - sizeof(uuid_t)); + /* + * Link the source inode under the target name. + * If the source inode is a directory and we are moving + * it across directories, its ".." entry will be + * inconsistent until we replace that down below. + * + * In case there is already an entry with the same + * name at the destination directory, remove it first. + */ + error = xfs_dir_replace(tp, target_dp, target_name, + src_ip->i_ino, + &first_block, &free_list, spaceres); + if (error) + goto abort_return; + + xfs_trans_ichgtime(tp, target_dp, + XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG); + + /* + * Decrement the link count on the target since the target + * dir no longer points to it. + */ + error = xfs_droplink(tp, target_ip); + if (error) + goto abort_return; + + if (src_is_directory) { + /* + * Drop the link from the old "." entry. + */ + error = xfs_droplink(tp, target_ip); + if (error) + goto abort_return; } - break; + } /* target_ip != NULL */ - default: - ASSERT(0); - break; + /* + * Remove the source. + */ + if (new_parent && src_is_directory) { + /* + * Rewrite the ".." entry to point to the new + * directory. + */ + error = xfs_dir_replace(tp, src_ip, &xfs_name_dotdot, + target_dp->i_ino, + &first_block, &free_list, spaceres); + ASSERT(error != EEXIST); + if (error) + goto abort_return; + } + + /* + * We always want to hit the ctime on the source inode. + * + * This isn't strictly required by the standards since the source + * inode isn't really being changed, but old unix file systems did + * it and some incremental backup programs won't work without it. + */ + xfs_trans_ichgtime(tp, src_ip, XFS_ICHGTIME_CHG); + xfs_trans_log_inode(tp, src_ip, XFS_ILOG_CORE); + + /* + * Adjust the link count on src_dp. This is necessary when + * renaming a directory, either within one parent when + * the target existed, or across two parent directories. + */ + if (src_is_directory && (new_parent || target_ip != NULL)) { + + /* + * Decrement link count on src_directory since the + * entry that's moved no longer points to it. + */ + error = xfs_droplink(tp, src_dp); + if (error) + goto abort_return; + } + + error = xfs_dir_removename(tp, src_dp, src_name, src_ip->i_ino, + &first_block, &free_list, spaceres); + if (error) + goto abort_return; + + xfs_trans_ichgtime(tp, src_dp, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG); + xfs_trans_log_inode(tp, src_dp, XFS_ILOG_CORE); + if (new_parent) + xfs_trans_log_inode(tp, target_dp, XFS_ILOG_CORE); + + /* + * If this is a synchronous mount, make sure that the + * rename transaction goes to disk before returning to + * the user. + */ + if (mp->m_flags & (XFS_MOUNT_WSYNC|XFS_MOUNT_DIRSYNC)) { + xfs_trans_set_sync(tp); } + + error = xfs_bmap_finish(&tp, &free_list, &committed); + if (error) { + xfs_bmap_cancel(&free_list); + xfs_trans_cancel(tp, (XFS_TRANS_RELEASE_LOG_RES | + XFS_TRANS_ABORT)); + goto std_return; + } + + /* + * trans_commit will unlock src_ip, target_ip & decrement + * the vnode references. + */ + return xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES); + + abort_return: + cancel_flags |= XFS_TRANS_ABORT; + error_return: + xfs_bmap_cancel(&free_list); + xfs_trans_cancel(tp, cancel_flags); + std_return: + return error; } STATIC int @@ -2816,7 +3093,6 @@ abort_out: return error; } - STATIC int xfs_iflush_int( struct xfs_inode *ip, @@ -3004,1072 +3280,3 @@ xfs_iflush_int( corrupt_out: return XFS_ERROR(EFSCORRUPTED); } - -/* - * Return a pointer to the extent record at file index idx. - */ -xfs_bmbt_rec_host_t * -xfs_iext_get_ext( - xfs_ifork_t *ifp, /* inode fork pointer */ - xfs_extnum_t idx) /* index of target extent */ -{ - ASSERT(idx >= 0); - ASSERT(idx < ifp->if_bytes / sizeof(xfs_bmbt_rec_t)); - - if ((ifp->if_flags & XFS_IFEXTIREC) && (idx == 0)) { - return ifp->if_u1.if_ext_irec->er_extbuf; - } else if (ifp->if_flags & XFS_IFEXTIREC) { - xfs_ext_irec_t *erp; /* irec pointer */ - int erp_idx = 0; /* irec index */ - xfs_extnum_t page_idx = idx; /* ext index in target list */ - - erp = xfs_iext_idx_to_irec(ifp, &page_idx, &erp_idx, 0); - return &erp->er_extbuf[page_idx]; - } else if (ifp->if_bytes) { - return &ifp->if_u1.if_extents[idx]; - } else { - return NULL; - } -} - -/* - * Insert new item(s) into the extent records for incore inode - * fork 'ifp'. 'count' new items are inserted at index 'idx'. - */ -void -xfs_iext_insert( - xfs_inode_t *ip, /* incore inode pointer */ - xfs_extnum_t idx, /* starting index of new items */ - xfs_extnum_t count, /* number of inserted items */ - xfs_bmbt_irec_t *new, /* items to insert */ - int state) /* type of extent conversion */ -{ - xfs_ifork_t *ifp = (state & BMAP_ATTRFORK) ? ip->i_afp : &ip->i_df; - xfs_extnum_t i; /* extent record index */ - - trace_xfs_iext_insert(ip, idx, new, state, _RET_IP_); - - ASSERT(ifp->if_flags & XFS_IFEXTENTS); - xfs_iext_add(ifp, idx, count); - for (i = idx; i < idx + count; i++, new++) - xfs_bmbt_set_all(xfs_iext_get_ext(ifp, i), new); -} - -/* - * This is called when the amount of space required for incore file - * extents needs to be increased. The ext_diff parameter stores the - * number of new extents being added and the idx parameter contains - * the extent index where the new extents will be added. If the new - * extents are being appended, then we just need to (re)allocate and - * initialize the space. Otherwise, if the new extents are being - * inserted into the middle of the existing entries, a bit more work - * is required to make room for the new extents to be inserted. The - * caller is responsible for filling in the new extent entries upon - * return. - */ -void -xfs_iext_add( - xfs_ifork_t *ifp, /* inode fork pointer */ - xfs_extnum_t idx, /* index to begin adding exts */ - int ext_diff) /* number of extents to add */ -{ - int byte_diff; /* new bytes being added */ - int new_size; /* size of extents after adding */ - xfs_extnum_t nextents; /* number of extents in file */ - - nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); - ASSERT((idx >= 0) && (idx <= nextents)); - byte_diff = ext_diff * sizeof(xfs_bmbt_rec_t); - new_size = ifp->if_bytes + byte_diff; - /* - * If the new number of extents (nextents + ext_diff) - * fits inside the inode, then continue to use the inline - * extent buffer. - */ - if (nextents + ext_diff <= XFS_INLINE_EXTS) { - if (idx < nextents) { - memmove(&ifp->if_u2.if_inline_ext[idx + ext_diff], - &ifp->if_u2.if_inline_ext[idx], - (nextents - idx) * sizeof(xfs_bmbt_rec_t)); - memset(&ifp->if_u2.if_inline_ext[idx], 0, byte_diff); - } - ifp->if_u1.if_extents = ifp->if_u2.if_inline_ext; - ifp->if_real_bytes = 0; - } - /* - * Otherwise use a linear (direct) extent list. - * If the extents are currently inside the inode, - * xfs_iext_realloc_direct will switch us from - * inline to direct extent allocation mode. - */ - else if (nextents + ext_diff <= XFS_LINEAR_EXTS) { - xfs_iext_realloc_direct(ifp, new_size); - if (idx < nextents) { - memmove(&ifp->if_u1.if_extents[idx + ext_diff], - &ifp->if_u1.if_extents[idx], - (nextents - idx) * sizeof(xfs_bmbt_rec_t)); - memset(&ifp->if_u1.if_extents[idx], 0, byte_diff); - } - } - /* Indirection array */ - else { - xfs_ext_irec_t *erp; - int erp_idx = 0; - int page_idx = idx; - - ASSERT(nextents + ext_diff > XFS_LINEAR_EXTS); - if (ifp->if_flags & XFS_IFEXTIREC) { - erp = xfs_iext_idx_to_irec(ifp, &page_idx, &erp_idx, 1); - } else { - xfs_iext_irec_init(ifp); - ASSERT(ifp->if_flags & XFS_IFEXTIREC); - erp = ifp->if_u1.if_ext_irec; - } - /* Extents fit in target extent page */ - if (erp && erp->er_extcount + ext_diff <= XFS_LINEAR_EXTS) { - if (page_idx < erp->er_extcount) { - memmove(&erp->er_extbuf[page_idx + ext_diff], - &erp->er_extbuf[page_idx], - (erp->er_extcount - page_idx) * - sizeof(xfs_bmbt_rec_t)); - memset(&erp->er_extbuf[page_idx], 0, byte_diff); - } - erp->er_extcount += ext_diff; - xfs_iext_irec_update_extoffs(ifp, erp_idx + 1, ext_diff); - } - /* Insert a new extent page */ - else if (erp) { - xfs_iext_add_indirect_multi(ifp, - erp_idx, page_idx, ext_diff); - } - /* - * If extent(s) are being appended to the last page in - * the indirection array and the new extent(s) don't fit - * in the page, then erp is NULL and erp_idx is set to - * the next index needed in the indirection array. - */ - else { - int count = ext_diff; - - while (count) { - erp = xfs_iext_irec_new(ifp, erp_idx); - erp->er_extcount = count; - count -= MIN(count, (int)XFS_LINEAR_EXTS); - if (count) { - erp_idx++; - } - } - } - } - ifp->if_bytes = new_size; -} - -/* - * This is called when incore extents are being added to the indirection - * array and the new extents do not fit in the target extent list. The - * erp_idx parameter contains the irec index for the target extent list - * in the indirection array, and the idx parameter contains the extent - * index within the list. The number of extents being added is stored - * in the count parameter. - * - * |-------| |-------| - * | | | | idx - number of extents before idx - * | idx | | count | - * | | | | count - number of extents being inserted at idx - * |-------| |-------| - * | count | | nex2 | nex2 - number of extents after idx + count - * |-------| |-------| - */ -void -xfs_iext_add_indirect_multi( - xfs_ifork_t *ifp, /* inode fork pointer */ - int erp_idx, /* target extent irec index */ - xfs_extnum_t idx, /* index within target list */ - int count) /* new extents being added */ -{ - int byte_diff; /* new bytes being added */ - xfs_ext_irec_t *erp; /* pointer to irec entry */ - xfs_extnum_t ext_diff; /* number of extents to add */ - xfs_extnum_t ext_cnt; /* new extents still needed */ - xfs_extnum_t nex2; /* extents after idx + count */ - xfs_bmbt_rec_t *nex2_ep = NULL; /* temp list for nex2 extents */ - int nlists; /* number of irec's (lists) */ - - ASSERT(ifp->if_flags & XFS_IFEXTIREC); - erp = &ifp->if_u1.if_ext_irec[erp_idx]; - nex2 = erp->er_extcount - idx; - nlists = ifp->if_real_bytes / XFS_IEXT_BUFSZ; - - /* - * Save second part of target extent list - * (all extents past */ - if (nex2) { - byte_diff = nex2 * sizeof(xfs_bmbt_rec_t); - nex2_ep = (xfs_bmbt_rec_t *) kmem_alloc(byte_diff, KM_NOFS); - memmove(nex2_ep, &erp->er_extbuf[idx], byte_diff); - erp->er_extcount -= nex2; - xfs_iext_irec_update_extoffs(ifp, erp_idx + 1, -nex2); - memset(&erp->er_extbuf[idx], 0, byte_diff); - } - - /* - * Add the new extents to the end of the target - * list, then allocate new irec record(s) and - * extent buffer(s) as needed to store the rest - * of the new extents. - */ - ext_cnt = count; - ext_diff = MIN(ext_cnt, (int)XFS_LINEAR_EXTS - erp->er_extcount); - if (ext_diff) { - erp->er_extcount += ext_diff; - xfs_iext_irec_update_extoffs(ifp, erp_idx + 1, ext_diff); - ext_cnt -= ext_diff; - } - while (ext_cnt) { - erp_idx++; - erp = xfs_iext_irec_new(ifp, erp_idx); - ext_diff = MIN(ext_cnt, (int)XFS_LINEAR_EXTS); - erp->er_extcount = ext_diff; - xfs_iext_irec_update_extoffs(ifp, erp_idx + 1, ext_diff); - ext_cnt -= ext_diff; - } - - /* Add nex2 extents back to indirection array */ - if (nex2) { - xfs_extnum_t ext_avail; - int i; - - byte_diff = nex2 * sizeof(xfs_bmbt_rec_t); - ext_avail = XFS_LINEAR_EXTS - erp->er_extcount; - i = 0; - /* - * If nex2 extents fit in the current page, append - * nex2_ep after the new extents. - */ - if (nex2 <= ext_avail) { - i = erp->er_extcount; - } - /* - * Otherwise, check if space is available in the - * next page. - */ - else if ((erp_idx < nlists - 1) && - (nex2 <= (ext_avail = XFS_LINEAR_EXTS - - ifp->if_u1.if_ext_irec[erp_idx+1].er_extcount))) { - erp_idx++; - erp++; - /* Create a hole for nex2 extents */ - memmove(&erp->er_extbuf[nex2], erp->er_extbuf, - erp->er_extcount * sizeof(xfs_bmbt_rec_t)); - } - /* - * Final choice, create a new extent page for - * nex2 extents. - */ - else { - erp_idx++; - erp = xfs_iext_irec_new(ifp, erp_idx); - } - memmove(&erp->er_extbuf[i], nex2_ep, byte_diff); - kmem_free(nex2_ep); - erp->er_extcount += nex2; - xfs_iext_irec_update_extoffs(ifp, erp_idx + 1, nex2); - } -} - -/* - * This is called when the amount of space required for incore file - * extents needs to be decreased. The ext_diff parameter stores the - * number of extents to be removed and the idx parameter contains - * the extent index where the extents will be removed from. - * - * If the amount of space needed has decreased below the linear - * limit, XFS_IEXT_BUFSZ, then switch to using the contiguous - * extent array. Otherwise, use kmem_realloc() to adjust the - * size to what is needed. - */ -void -xfs_iext_remove( - xfs_inode_t *ip, /* incore inode pointer */ - xfs_extnum_t idx, /* index to begin removing exts */ - int ext_diff, /* number of extents to remove */ - int state) /* type of extent conversion */ -{ - xfs_ifork_t *ifp = (state & BMAP_ATTRFORK) ? ip->i_afp : &ip->i_df; - xfs_extnum_t nextents; /* number of extents in file */ - int new_size; /* size of extents after removal */ - - trace_xfs_iext_remove(ip, idx, state, _RET_IP_); - - ASSERT(ext_diff > 0); - nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); - new_size = (nextents - ext_diff) * sizeof(xfs_bmbt_rec_t); - - if (new_size == 0) { - xfs_iext_destroy(ifp); - } else if (ifp->if_flags & XFS_IFEXTIREC) { - xfs_iext_remove_indirect(ifp, idx, ext_diff); - } else if (ifp->if_real_bytes) { - xfs_iext_remove_direct(ifp, idx, ext_diff); - } else { - xfs_iext_remove_inline(ifp, idx, ext_diff); - } - ifp->if_bytes = new_size; -} - -/* - * This removes ext_diff extents from the inline buffer, beginning - * at extent index idx. - */ -void -xfs_iext_remove_inline( - xfs_ifork_t *ifp, /* inode fork pointer */ - xfs_extnum_t idx, /* index to begin removing exts */ - int ext_diff) /* number of extents to remove */ -{ - int nextents; /* number of extents in file */ - - ASSERT(!(ifp->if_flags & XFS_IFEXTIREC)); - ASSERT(idx < XFS_INLINE_EXTS); - nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); - ASSERT(((nextents - ext_diff) > 0) && - (nextents - ext_diff) < XFS_INLINE_EXTS); - - if (idx + ext_diff < nextents) { - memmove(&ifp->if_u2.if_inline_ext[idx], - &ifp->if_u2.if_inline_ext[idx + ext_diff], - (nextents - (idx + ext_diff)) * - sizeof(xfs_bmbt_rec_t)); - memset(&ifp->if_u2.if_inline_ext[nextents - ext_diff], - 0, ext_diff * sizeof(xfs_bmbt_rec_t)); - } else { - memset(&ifp->if_u2.if_inline_ext[idx], 0, - ext_diff * sizeof(xfs_bmbt_rec_t)); - } -} - -/* - * This removes ext_diff extents from a linear (direct) extent list, - * beginning at extent index idx. If the extents are being removed - * from the end of the list (ie. truncate) then we just need to re- - * allocate the list to remove the extra space. Otherwise, if the - * extents are being removed from the middle of the existing extent - * entries, then we first need to move the extent records beginning - * at idx + ext_diff up in the list to overwrite the records being - * removed, then remove the extra space via kmem_realloc. - */ -void -xfs_iext_remove_direct( - xfs_ifork_t *ifp, /* inode fork pointer */ - xfs_extnum_t idx, /* index to begin removing exts */ - int ext_diff) /* number of extents to remove */ -{ - xfs_extnum_t nextents; /* number of extents in file */ - int new_size; /* size of extents after removal */ - - ASSERT(!(ifp->if_flags & XFS_IFEXTIREC)); - new_size = ifp->if_bytes - - (ext_diff * sizeof(xfs_bmbt_rec_t)); - nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); - - if (new_size == 0) { - xfs_iext_destroy(ifp); - return; - } - /* Move extents up in the list (if needed) */ - if (idx + ext_diff < nextents) { - memmove(&ifp->if_u1.if_extents[idx], - &ifp->if_u1.if_extents[idx + ext_diff], - (nextents - (idx + ext_diff)) * - sizeof(xfs_bmbt_rec_t)); - } - memset(&ifp->if_u1.if_extents[nextents - ext_diff], - 0, ext_diff * sizeof(xfs_bmbt_rec_t)); - /* - * Reallocate the direct extent list. If the extents - * will fit inside the inode then xfs_iext_realloc_direct - * will switch from direct to inline extent allocation - * mode for us. - */ - xfs_iext_realloc_direct(ifp, new_size); - ifp->if_bytes = new_size; -} - -/* - * This is called when incore extents are being removed from the - * indirection array and the extents being removed span multiple extent - * buffers. The idx parameter contains the file extent index where we - * want to begin removing extents, and the count parameter contains - * how many extents need to be removed. - * - * |-------| |-------| - * | nex1 | | | nex1 - number of extents before idx - * |-------| | count | - * | | | | count - number of extents being removed at idx - * | count | |-------| - * | | | nex2 | nex2 - number of extents after idx + count - * |-------| |-------| - */ -void -xfs_iext_remove_indirect( - xfs_ifork_t *ifp, /* inode fork pointer */ - xfs_extnum_t idx, /* index to begin removing extents */ - int count) /* number of extents to remove */ -{ - xfs_ext_irec_t *erp; /* indirection array pointer */ - int erp_idx = 0; /* indirection array index */ - xfs_extnum_t ext_cnt; /* extents left to remove */ - xfs_extnum_t ext_diff; /* extents to remove in current list */ - xfs_extnum_t nex1; /* number of extents before idx */ - xfs_extnum_t nex2; /* extents after idx + count */ - int page_idx = idx; /* index in target extent list */ - - ASSERT(ifp->if_flags & XFS_IFEXTIREC); - erp = xfs_iext_idx_to_irec(ifp, &page_idx, &erp_idx, 0); - ASSERT(erp != NULL); - nex1 = page_idx; - ext_cnt = count; - while (ext_cnt) { - nex2 = MAX((erp->er_extcount - (nex1 + ext_cnt)), 0); - ext_diff = MIN(ext_cnt, (erp->er_extcount - nex1)); - /* - * Check for deletion of entire list; - * xfs_iext_irec_remove() updates extent offsets. - */ - if (ext_diff == erp->er_extcount) { - xfs_iext_irec_remove(ifp, erp_idx); - ext_cnt -= ext_diff; - nex1 = 0; - if (ext_cnt) { - ASSERT(erp_idx < ifp->if_real_bytes / - XFS_IEXT_BUFSZ); - erp = &ifp->if_u1.if_ext_irec[erp_idx]; - nex1 = 0; - continue; - } else { - break; - } - } - /* Move extents up (if needed) */ - if (nex2) { - memmove(&erp->er_extbuf[nex1], - &erp->er_extbuf[nex1 + ext_diff], - nex2 * sizeof(xfs_bmbt_rec_t)); - } - /* Zero out rest of page */ - memset(&erp->er_extbuf[nex1 + nex2], 0, (XFS_IEXT_BUFSZ - - ((nex1 + nex2) * sizeof(xfs_bmbt_rec_t)))); - /* Update remaining counters */ - erp->er_extcount -= ext_diff; - xfs_iext_irec_update_extoffs(ifp, erp_idx + 1, -ext_diff); - ext_cnt -= ext_diff; - nex1 = 0; - erp_idx++; - erp++; - } - ifp->if_bytes -= count * sizeof(xfs_bmbt_rec_t); - xfs_iext_irec_compact(ifp); -} - -/* - * Create, destroy, or resize a linear (direct) block of extents. - */ -void -xfs_iext_realloc_direct( - xfs_ifork_t *ifp, /* inode fork pointer */ - int new_size) /* new size of extents */ -{ - int rnew_size; /* real new size of extents */ - - rnew_size = new_size; - - ASSERT(!(ifp->if_flags & XFS_IFEXTIREC) || - ((new_size >= 0) && (new_size <= XFS_IEXT_BUFSZ) && - (new_size != ifp->if_real_bytes))); - - /* Free extent records */ - if (new_size == 0) { - xfs_iext_destroy(ifp); - } - /* Resize direct extent list and zero any new bytes */ - else if (ifp->if_real_bytes) { - /* Check if extents will fit inside the inode */ - if (new_size <= XFS_INLINE_EXTS * sizeof(xfs_bmbt_rec_t)) { - xfs_iext_direct_to_inline(ifp, new_size / - (uint)sizeof(xfs_bmbt_rec_t)); - ifp->if_bytes = new_size; - return; - } - if (!is_power_of_2(new_size)){ - rnew_size = roundup_pow_of_two(new_size); - } - if (rnew_size != ifp->if_real_bytes) { - ifp->if_u1.if_extents = - kmem_realloc(ifp->if_u1.if_extents, - rnew_size, - ifp->if_real_bytes, KM_NOFS); - } - if (rnew_size > ifp->if_real_bytes) { - memset(&ifp->if_u1.if_extents[ifp->if_bytes / - (uint)sizeof(xfs_bmbt_rec_t)], 0, - rnew_size - ifp->if_real_bytes); - } - } - /* - * Switch from the inline extent buffer to a direct - * extent list. Be sure to include the inline extent - * bytes in new_size. - */ - else { - new_size += ifp->if_bytes; - if (!is_power_of_2(new_size)) { - rnew_size = roundup_pow_of_two(new_size); - } - xfs_iext_inline_to_direct(ifp, rnew_size); - } - ifp->if_real_bytes = rnew_size; - ifp->if_bytes = new_size; -} - -/* - * Switch from linear (direct) extent records to inline buffer. - */ -void -xfs_iext_direct_to_inline( - xfs_ifork_t *ifp, /* inode fork pointer */ - xfs_extnum_t nextents) /* number of extents in file */ -{ - ASSERT(ifp->if_flags & XFS_IFEXTENTS); - ASSERT(nextents <= XFS_INLINE_EXTS); - /* - * The inline buffer was zeroed when we switched - * from inline to direct extent allocation mode, - * so we don't need to clear it here. - */ - memcpy(ifp->if_u2.if_inline_ext, ifp->if_u1.if_extents, - nextents * sizeof(xfs_bmbt_rec_t)); - kmem_free(ifp->if_u1.if_extents); - ifp->if_u1.if_extents = ifp->if_u2.if_inline_ext; - ifp->if_real_bytes = 0; -} - -/* - * Switch from inline buffer to linear (direct) extent records. - * new_size should already be rounded up to the next power of 2 - * by the caller (when appropriate), so use new_size as it is. - * However, since new_size may be rounded up, we can't update - * if_bytes here. It is the caller's responsibility to update - * if_bytes upon return. - */ -void -xfs_iext_inline_to_direct( - xfs_ifork_t *ifp, /* inode fork pointer */ - int new_size) /* number of extents in file */ -{ - ifp->if_u1.if_extents = kmem_alloc(new_size, KM_NOFS); - memset(ifp->if_u1.if_extents, 0, new_size); - if (ifp->if_bytes) { - memcpy(ifp->if_u1.if_extents, ifp->if_u2.if_inline_ext, - ifp->if_bytes); - memset(ifp->if_u2.if_inline_ext, 0, XFS_INLINE_EXTS * - sizeof(xfs_bmbt_rec_t)); - } - ifp->if_real_bytes = new_size; -} - -/* - * Resize an extent indirection array to new_size bytes. - */ -STATIC void -xfs_iext_realloc_indirect( - xfs_ifork_t *ifp, /* inode fork pointer */ - int new_size) /* new indirection array size */ -{ - int nlists; /* number of irec's (ex lists) */ - int size; /* current indirection array size */ - - ASSERT(ifp->if_flags & XFS_IFEXTIREC); - nlists = ifp->if_real_bytes / XFS_IEXT_BUFSZ; - size = nlists * sizeof(xfs_ext_irec_t); - ASSERT(ifp->if_real_bytes); - ASSERT((new_size >= 0) && (new_size != size)); - if (new_size == 0) { - xfs_iext_destroy(ifp); - } else { - ifp->if_u1.if_ext_irec = (xfs_ext_irec_t *) - kmem_realloc(ifp->if_u1.if_ext_irec, - new_size, size, KM_NOFS); - } -} - -/* - * Switch from indirection array to linear (direct) extent allocations. - */ -STATIC void -xfs_iext_indirect_to_direct( - xfs_ifork_t *ifp) /* inode fork pointer */ -{ - xfs_bmbt_rec_host_t *ep; /* extent record pointer */ - xfs_extnum_t nextents; /* number of extents in file */ - int size; /* size of file extents */ - - ASSERT(ifp->if_flags & XFS_IFEXTIREC); - nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); - ASSERT(nextents <= XFS_LINEAR_EXTS); - size = nextents * sizeof(xfs_bmbt_rec_t); - - xfs_iext_irec_compact_pages(ifp); - ASSERT(ifp->if_real_bytes == XFS_IEXT_BUFSZ); - - ep = ifp->if_u1.if_ext_irec->er_extbuf; - kmem_free(ifp->if_u1.if_ext_irec); - ifp->if_flags &= ~XFS_IFEXTIREC; - ifp->if_u1.if_extents = ep; - ifp->if_bytes = size; - if (nextents < XFS_LINEAR_EXTS) { - xfs_iext_realloc_direct(ifp, size); - } -} - -/* - * Free incore file extents. - */ -void -xfs_iext_destroy( - xfs_ifork_t *ifp) /* inode fork pointer */ -{ - if (ifp->if_flags & XFS_IFEXTIREC) { - int erp_idx; - int nlists; - - nlists = ifp->if_real_bytes / XFS_IEXT_BUFSZ; - for (erp_idx = nlists - 1; erp_idx >= 0 ; erp_idx--) { - xfs_iext_irec_remove(ifp, erp_idx); - } - ifp->if_flags &= ~XFS_IFEXTIREC; - } else if (ifp->if_real_bytes) { - kmem_free(ifp->if_u1.if_extents); - } else if (ifp->if_bytes) { - memset(ifp->if_u2.if_inline_ext, 0, XFS_INLINE_EXTS * - sizeof(xfs_bmbt_rec_t)); - } - ifp->if_u1.if_extents = NULL; - ifp->if_real_bytes = 0; - ifp->if_bytes = 0; -} - -/* - * Return a pointer to the extent record for file system block bno. - */ -xfs_bmbt_rec_host_t * /* pointer to found extent record */ -xfs_iext_bno_to_ext( - xfs_ifork_t *ifp, /* inode fork pointer */ - xfs_fileoff_t bno, /* block number to search for */ - xfs_extnum_t *idxp) /* index of target extent */ -{ - xfs_bmbt_rec_host_t *base; /* pointer to first extent */ - xfs_filblks_t blockcount = 0; /* number of blocks in extent */ - xfs_bmbt_rec_host_t *ep = NULL; /* pointer to target extent */ - xfs_ext_irec_t *erp = NULL; /* indirection array pointer */ - int high; /* upper boundary in search */ - xfs_extnum_t idx = 0; /* index of target extent */ - int low; /* lower boundary in search */ - xfs_extnum_t nextents; /* number of file extents */ - xfs_fileoff_t startoff = 0; /* start offset of extent */ - - nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); - if (nextents == 0) { - *idxp = 0; - return NULL; - } - low = 0; - if (ifp->if_flags & XFS_IFEXTIREC) { - /* Find target extent list */ - int erp_idx = 0; - erp = xfs_iext_bno_to_irec(ifp, bno, &erp_idx); - base = erp->er_extbuf; - high = erp->er_extcount - 1; - } else { - base = ifp->if_u1.if_extents; - high = nextents - 1; - } - /* Binary search extent records */ - while (low <= high) { - idx = (low + high) >> 1; - ep = base + idx; - startoff = xfs_bmbt_get_startoff(ep); - blockcount = xfs_bmbt_get_blockcount(ep); - if (bno < startoff) { - high = idx - 1; - } else if (bno >= startoff + blockcount) { - low = idx + 1; - } else { - /* Convert back to file-based extent index */ - if (ifp->if_flags & XFS_IFEXTIREC) { - idx += erp->er_extoff; - } - *idxp = idx; - return ep; - } - } - /* Convert back to file-based extent index */ - if (ifp->if_flags & XFS_IFEXTIREC) { - idx += erp->er_extoff; - } - if (bno >= startoff + blockcount) { - if (++idx == nextents) { - ep = NULL; - } else { - ep = xfs_iext_get_ext(ifp, idx); - } - } - *idxp = idx; - return ep; -} - -/* - * Return a pointer to the indirection array entry containing the - * extent record for filesystem block bno. Store the index of the - * target irec in *erp_idxp. - */ -xfs_ext_irec_t * /* pointer to found extent record */ -xfs_iext_bno_to_irec( - xfs_ifork_t *ifp, /* inode fork pointer */ - xfs_fileoff_t bno, /* block number to search for */ - int *erp_idxp) /* irec index of target ext list */ -{ - xfs_ext_irec_t *erp = NULL; /* indirection array pointer */ - xfs_ext_irec_t *erp_next; /* next indirection array entry */ - int erp_idx; /* indirection array index */ - int nlists; /* number of extent irec's (lists) */ - int high; /* binary search upper limit */ - int low; /* binary search lower limit */ - - ASSERT(ifp->if_flags & XFS_IFEXTIREC); - nlists = ifp->if_real_bytes / XFS_IEXT_BUFSZ; - erp_idx = 0; - low = 0; - high = nlists - 1; - while (low <= high) { - erp_idx = (low + high) >> 1; - erp = &ifp->if_u1.if_ext_irec[erp_idx]; - erp_next = erp_idx < nlists - 1 ? erp + 1 : NULL; - if (bno < xfs_bmbt_get_startoff(erp->er_extbuf)) { - high = erp_idx - 1; - } else if (erp_next && bno >= - xfs_bmbt_get_startoff(erp_next->er_extbuf)) { - low = erp_idx + 1; - } else { - break; - } - } - *erp_idxp = erp_idx; - return erp; -} - -/* - * Return a pointer to the indirection array entry containing the - * extent record at file extent index *idxp. Store the index of the - * target irec in *erp_idxp and store the page index of the target - * extent record in *idxp. - */ -xfs_ext_irec_t * -xfs_iext_idx_to_irec( - xfs_ifork_t *ifp, /* inode fork pointer */ - xfs_extnum_t *idxp, /* extent index (file -> page) */ - int *erp_idxp, /* pointer to target irec */ - int realloc) /* new bytes were just added */ -{ - xfs_ext_irec_t *prev; /* pointer to previous irec */ - xfs_ext_irec_t *erp = NULL; /* pointer to current irec */ - int erp_idx; /* indirection array index */ - int nlists; /* number of irec's (ex lists) */ - int high; /* binary search upper limit */ - int low; /* binary search lower limit */ - xfs_extnum_t page_idx = *idxp; /* extent index in target list */ - - ASSERT(ifp->if_flags & XFS_IFEXTIREC); - ASSERT(page_idx >= 0); - ASSERT(page_idx <= ifp->if_bytes / sizeof(xfs_bmbt_rec_t)); - ASSERT(page_idx < ifp->if_bytes / sizeof(xfs_bmbt_rec_t) || realloc); - - nlists = ifp->if_real_bytes / XFS_IEXT_BUFSZ; - erp_idx = 0; - low = 0; - high = nlists - 1; - - /* Binary search extent irec's */ - while (low <= high) { - erp_idx = (low + high) >> 1; - erp = &ifp->if_u1.if_ext_irec[erp_idx]; - prev = erp_idx > 0 ? erp - 1 : NULL; - if (page_idx < erp->er_extoff || (page_idx == erp->er_extoff && - realloc && prev && prev->er_extcount < XFS_LINEAR_EXTS)) { - high = erp_idx - 1; - } else if (page_idx > erp->er_extoff + erp->er_extcount || - (page_idx == erp->er_extoff + erp->er_extcount && - !realloc)) { - low = erp_idx + 1; - } else if (page_idx == erp->er_extoff + erp->er_extcount && - erp->er_extcount == XFS_LINEAR_EXTS) { - ASSERT(realloc); - page_idx = 0; - erp_idx++; - erp = erp_idx < nlists ? erp + 1 : NULL; - break; - } else { - page_idx -= erp->er_extoff; - break; - } - } - *idxp = page_idx; - *erp_idxp = erp_idx; - return(erp); -} - -/* - * Allocate and initialize an indirection array once the space needed - * for incore extents increases above XFS_IEXT_BUFSZ. - */ -void -xfs_iext_irec_init( - xfs_ifork_t *ifp) /* inode fork pointer */ -{ - xfs_ext_irec_t *erp; /* indirection array pointer */ - xfs_extnum_t nextents; /* number of extents in file */ - - ASSERT(!(ifp->if_flags & XFS_IFEXTIREC)); - nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); - ASSERT(nextents <= XFS_LINEAR_EXTS); - - erp = kmem_alloc(sizeof(xfs_ext_irec_t), KM_NOFS); - - if (nextents == 0) { - ifp->if_u1.if_extents = kmem_alloc(XFS_IEXT_BUFSZ, KM_NOFS); - } else if (!ifp->if_real_bytes) { - xfs_iext_inline_to_direct(ifp, XFS_IEXT_BUFSZ); - } else if (ifp->if_real_bytes < XFS_IEXT_BUFSZ) { - xfs_iext_realloc_direct(ifp, XFS_IEXT_BUFSZ); - } - erp->er_extbuf = ifp->if_u1.if_extents; - erp->er_extcount = nextents; - erp->er_extoff = 0; - - ifp->if_flags |= XFS_IFEXTIREC; - ifp->if_real_bytes = XFS_IEXT_BUFSZ; - ifp->if_bytes = nextents * sizeof(xfs_bmbt_rec_t); - ifp->if_u1.if_ext_irec = erp; - - return; -} - -/* - * Allocate and initialize a new entry in the indirection array. - */ -xfs_ext_irec_t * -xfs_iext_irec_new( - xfs_ifork_t *ifp, /* inode fork pointer */ - int erp_idx) /* index for new irec */ -{ - xfs_ext_irec_t *erp; /* indirection array pointer */ - int i; /* loop counter */ - int nlists; /* number of irec's (ex lists) */ - - ASSERT(ifp->if_flags & XFS_IFEXTIREC); - nlists = ifp->if_real_bytes / XFS_IEXT_BUFSZ; - - /* Resize indirection array */ - xfs_iext_realloc_indirect(ifp, ++nlists * - sizeof(xfs_ext_irec_t)); - /* - * Move records down in the array so the - * new page can use erp_idx. - */ - erp = ifp->if_u1.if_ext_irec; - for (i = nlists - 1; i > erp_idx; i--) { - memmove(&erp[i], &erp[i-1], sizeof(xfs_ext_irec_t)); - } - ASSERT(i == erp_idx); - - /* Initialize new extent record */ - erp = ifp->if_u1.if_ext_irec; - erp[erp_idx].er_extbuf = kmem_alloc(XFS_IEXT_BUFSZ, KM_NOFS); - ifp->if_real_bytes = nlists * XFS_IEXT_BUFSZ; - memset(erp[erp_idx].er_extbuf, 0, XFS_IEXT_BUFSZ); - erp[erp_idx].er_extcount = 0; - erp[erp_idx].er_extoff = erp_idx > 0 ? - erp[erp_idx-1].er_extoff + erp[erp_idx-1].er_extcount : 0; - return (&erp[erp_idx]); -} - -/* - * Remove a record from the indirection array. - */ -void -xfs_iext_irec_remove( - xfs_ifork_t *ifp, /* inode fork pointer */ - int erp_idx) /* irec index to remove */ -{ - xfs_ext_irec_t *erp; /* indirection array pointer */ - int i; /* loop counter */ - int nlists; /* number of irec's (ex lists) */ - - ASSERT(ifp->if_flags & XFS_IFEXTIREC); - nlists = ifp->if_real_bytes / XFS_IEXT_BUFSZ; - erp = &ifp->if_u1.if_ext_irec[erp_idx]; - if (erp->er_extbuf) { - xfs_iext_irec_update_extoffs(ifp, erp_idx + 1, - -erp->er_extcount); - kmem_free(erp->er_extbuf); - } - /* Compact extent records */ - erp = ifp->if_u1.if_ext_irec; - for (i = erp_idx; i < nlists - 1; i++) { - memmove(&erp[i], &erp[i+1], sizeof(xfs_ext_irec_t)); - } - /* - * Manually free the last extent record from the indirection - * array. A call to xfs_iext_realloc_indirect() with a size - * of zero would result in a call to xfs_iext_destroy() which - * would in turn call this function again, creating a nasty - * infinite loop. - */ - if (--nlists) { - xfs_iext_realloc_indirect(ifp, - nlists * sizeof(xfs_ext_irec_t)); - } else { - kmem_free(ifp->if_u1.if_ext_irec); - } - ifp->if_real_bytes = nlists * XFS_IEXT_BUFSZ; -} - -/* - * This is called to clean up large amounts of unused memory allocated - * by the indirection array. Before compacting anything though, verify - * that the indirection array is still needed and switch back to the - * linear extent list (or even the inline buffer) if possible. The - * compaction policy is as follows: - * - * Full Compaction: Extents fit into a single page (or inline buffer) - * Partial Compaction: Extents occupy less than 50% of allocated space - * No Compaction: Extents occupy at least 50% of allocated space - */ -void -xfs_iext_irec_compact( - xfs_ifork_t *ifp) /* inode fork pointer */ -{ - xfs_extnum_t nextents; /* number of extents in file */ - int nlists; /* number of irec's (ex lists) */ - - ASSERT(ifp->if_flags & XFS_IFEXTIREC); - nlists = ifp->if_real_bytes / XFS_IEXT_BUFSZ; - nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); - - if (nextents == 0) { - xfs_iext_destroy(ifp); - } else if (nextents <= XFS_INLINE_EXTS) { - xfs_iext_indirect_to_direct(ifp); - xfs_iext_direct_to_inline(ifp, nextents); - } else if (nextents <= XFS_LINEAR_EXTS) { - xfs_iext_indirect_to_direct(ifp); - } else if (nextents < (nlists * XFS_LINEAR_EXTS) >> 1) { - xfs_iext_irec_compact_pages(ifp); - } -} - -/* - * Combine extents from neighboring extent pages. - */ -void -xfs_iext_irec_compact_pages( - xfs_ifork_t *ifp) /* inode fork pointer */ -{ - xfs_ext_irec_t *erp, *erp_next;/* pointers to irec entries */ - int erp_idx = 0; /* indirection array index */ - int nlists; /* number of irec's (ex lists) */ - - ASSERT(ifp->if_flags & XFS_IFEXTIREC); - nlists = ifp->if_real_bytes / XFS_IEXT_BUFSZ; - while (erp_idx < nlists - 1) { - erp = &ifp->if_u1.if_ext_irec[erp_idx]; - erp_next = erp + 1; - if (erp_next->er_extcount <= - (XFS_LINEAR_EXTS - erp->er_extcount)) { - memcpy(&erp->er_extbuf[erp->er_extcount], - erp_next->er_extbuf, erp_next->er_extcount * - sizeof(xfs_bmbt_rec_t)); - erp->er_extcount += erp_next->er_extcount; - /* - * Free page before removing extent record - * so er_extoffs don't get modified in - * xfs_iext_irec_remove. - */ - kmem_free(erp_next->er_extbuf); - erp_next->er_extbuf = NULL; - xfs_iext_irec_remove(ifp, erp_idx + 1); - nlists = ifp->if_real_bytes / XFS_IEXT_BUFSZ; - } else { - erp_idx++; - } - } -} - -/* - * This is called to update the er_extoff field in the indirection - * array when extents have been added or removed from one of the - * extent lists. erp_idx contains the irec index to begin updating - * at and ext_diff contains the number of extents that were added - * or removed. - */ -void -xfs_iext_irec_update_extoffs( - xfs_ifork_t *ifp, /* inode fork pointer */ - int erp_idx, /* irec index to update */ - int ext_diff) /* number of new extents */ -{ - int i; /* loop counter */ - int nlists; /* number of irec's (ex lists */ - - ASSERT(ifp->if_flags & XFS_IFEXTIREC); - nlists = ifp->if_real_bytes / XFS_IEXT_BUFSZ; - for (i = erp_idx; i < nlists; i++) { - ifp->if_u1.if_ext_irec[i].er_extoff += ext_diff; - } -} - -/* - * Test whether it is appropriate to check an inode for and free post EOF - * blocks. The 'force' parameter determines whether we should also consider - * regular files that are marked preallocated or append-only. - */ -bool -xfs_can_free_eofblocks(struct xfs_inode *ip, bool force) -{ - /* prealloc/delalloc exists only on regular files */ - if (!S_ISREG(ip->i_d.di_mode)) - return false; - - /* - * Zero sized files with no cached pages and delalloc blocks will not - * have speculative prealloc/delalloc blocks to remove. - */ - if (VFS_I(ip)->i_size == 0 && - VN_CACHED(VFS_I(ip)) == 0 && - ip->i_delayed_blks == 0) - return false; - - /* If we haven't read in the extent list, then don't do it now. */ - if (!(ip->i_df.if_flags & XFS_IFEXTENTS)) - return false; - - /* - * Do not free real preallocated or append-only files unless the file - * has delalloc blocks and we are forced to remove them. - */ - if (ip->i_d.di_flags & (XFS_DIFLAG_PREALLOC | XFS_DIFLAG_APPEND)) - if (!force || ip->i_delayed_blks == 0) - return false; - - return true; -} - diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h index b55fd34..4a91358 100644 --- a/fs/xfs/xfs_inode.h +++ b/fs/xfs/xfs_inode.h @@ -18,225 +18,15 @@ #ifndef __XFS_INODE_H__ #define __XFS_INODE_H__ -struct posix_acl; -struct xfs_dinode; -struct xfs_inode; - -/* - * Fork identifiers. - */ -#define XFS_DATA_FORK 0 -#define XFS_ATTR_FORK 1 - -/* - * The following xfs_ext_irec_t struct introduces a second (top) level - * to the in-core extent allocation scheme. These structs are allocated - * in a contiguous block, creating an indirection array where each entry - * (irec) contains a pointer to a buffer of in-core extent records which - * it manages. Each extent buffer is 4k in size, since 4k is the system - * page size on Linux i386 and systems with larger page sizes don't seem - * to gain much, if anything, by using their native page size as the - * extent buffer size. Also, using 4k extent buffers everywhere provides - * a consistent interface for CXFS across different platforms. - * - * There is currently no limit on the number of irec's (extent lists) - * allowed, so heavily fragmented files may require an indirection array - * which spans multiple system pages of memory. The number of extents - * which would require this amount of contiguous memory is very large - * and should not cause problems in the foreseeable future. However, - * if the memory needed for the contiguous array ever becomes a problem, - * it is possible that a third level of indirection may be required. - */ -typedef struct xfs_ext_irec { - xfs_bmbt_rec_host_t *er_extbuf; /* block of extent records */ - xfs_extnum_t er_extoff; /* extent offset in file */ - xfs_extnum_t er_extcount; /* number of extents in page/block */ -} xfs_ext_irec_t; +#include "xfs_inode_buf.h" +#include "xfs_inode_fork.h" /* - * File incore extent information, present for each of data & attr forks. + * Kernel only inode definitions */ -#define XFS_IEXT_BUFSZ 4096 -#define XFS_LINEAR_EXTS (XFS_IEXT_BUFSZ / (uint)sizeof(xfs_bmbt_rec_t)) -#define XFS_INLINE_EXTS 2 -#define XFS_INLINE_DATA 32 -typedef struct xfs_ifork { - int if_bytes; /* bytes in if_u1 */ - int if_real_bytes; /* bytes allocated in if_u1 */ - struct xfs_btree_block *if_broot; /* file's incore btree root */ - short if_broot_bytes; /* bytes allocated for root */ - unsigned char if_flags; /* per-fork flags */ - union { - xfs_bmbt_rec_host_t *if_extents;/* linear map file exts */ - xfs_ext_irec_t *if_ext_irec; /* irec map file exts */ - char *if_data; /* inline file data */ - } if_u1; - union { - xfs_bmbt_rec_host_t if_inline_ext[XFS_INLINE_EXTS]; - /* very small file extents */ - char if_inline_data[XFS_INLINE_DATA]; - /* very small file data */ - xfs_dev_t if_rdev; /* dev number if special */ - uuid_t if_uuid; /* mount point value */ - } if_u2; -} xfs_ifork_t; - -/* - * Inode location information. Stored in the inode and passed to - * xfs_imap_to_bp() to get a buffer and dinode for a given inode. - */ -struct xfs_imap { - xfs_daddr_t im_blkno; /* starting BB of inode chunk */ - ushort im_len; /* length in BBs of inode chunk */ - ushort im_boffset; /* inode offset in block in bytes */ -}; - -/* - * This is the xfs in-core inode structure. - * Most of the on-disk inode is embedded in the i_d field. - * - * The extent pointers/inline file space, however, are managed - * separately. The memory for this information is pointed to by - * the if_u1 unions depending on the type of the data. - * This is used to linearize the array of extents for fast in-core - * access. This is used until the file's number of extents - * surpasses XFS_MAX_INCORE_EXTENTS, at which point all extent pointers - * are accessed through the buffer cache. - * - * Other state kept in the in-core inode is used for identification, - * locking, transactional updating, etc of the inode. - * - * Generally, we do not want to hold the i_rlock while holding the - * i_ilock. Hierarchy is i_iolock followed by i_rlock. - * - * xfs_iptr_t contains all the inode fields up to and including the - * i_mnext and i_mprev fields, it is used as a marker in the inode - * chain off the mount structure by xfs_sync calls. - */ - -typedef struct xfs_ictimestamp { - __int32_t t_sec; /* timestamp seconds */ - __int32_t t_nsec; /* timestamp nanoseconds */ -} xfs_ictimestamp_t; - -/* - * NOTE: This structure must be kept identical to struct xfs_dinode - * in xfs_dinode.h except for the endianness annotations. - */ -typedef struct xfs_icdinode { - __uint16_t di_magic; /* inode magic # = XFS_DINODE_MAGIC */ - __uint16_t di_mode; /* mode and type of file */ - __int8_t di_version; /* inode version */ - __int8_t di_format; /* format of di_c data */ - __uint16_t di_onlink; /* old number of links to file */ - __uint32_t di_uid; /* owner's user id */ - __uint32_t di_gid; /* owner's group id */ - __uint32_t di_nlink; /* number of links to file */ - __uint16_t di_projid_lo; /* lower part of owner's project id */ - __uint16_t di_projid_hi; /* higher part of owner's project id */ - __uint8_t di_pad[6]; /* unused, zeroed space */ - __uint16_t di_flushiter; /* incremented on flush */ - xfs_ictimestamp_t di_atime; /* time last accessed */ - xfs_ictimestamp_t di_mtime; /* time last modified */ - xfs_ictimestamp_t di_ctime; /* time created/inode modified */ - xfs_fsize_t di_size; /* number of bytes in file */ - xfs_drfsbno_t di_nblocks; /* # of direct & btree blocks used */ - xfs_extlen_t di_extsize; /* basic/minimum extent size for file */ - xfs_extnum_t di_nextents; /* number of extents in data fork */ - xfs_aextnum_t di_anextents; /* number of extents in attribute fork*/ - __uint8_t di_forkoff; /* attr fork offs, <<3 for 64b align */ - __int8_t di_aformat; /* format of attr fork's data */ - __uint32_t di_dmevmask; /* DMIG event mask */ - __uint16_t di_dmstate; /* DMIG state info */ - __uint16_t di_flags; /* random flags, XFS_DIFLAG_... */ - __uint32_t di_gen; /* generation number */ - - /* di_next_unlinked is the only non-core field in the old dinode */ - xfs_agino_t di_next_unlinked;/* agi unlinked list ptr */ - - /* start of the extended dinode, writable fields */ - __uint32_t di_crc; /* CRC of the inode */ - __uint64_t di_changecount; /* number of attribute changes */ - xfs_lsn_t di_lsn; /* flush sequence */ - __uint64_t di_flags2; /* more random flags */ - __uint8_t di_pad2[16]; /* more padding for future expansion */ - - /* fields only written to during inode creation */ - xfs_ictimestamp_t di_crtime; /* time created */ - xfs_ino_t di_ino; /* inode number */ - uuid_t di_uuid; /* UUID of the filesystem */ - - /* structure must be padded to 64 bit alignment */ -} xfs_icdinode_t; - -static inline uint xfs_icdinode_size(int version) -{ - if (version == 3) - return sizeof(struct xfs_icdinode); - return offsetof(struct xfs_icdinode, di_next_unlinked); -} - -/* - * Flags for xfs_ichgtime(). - */ -#define XFS_ICHGTIME_MOD 0x1 /* data fork modification timestamp */ -#define XFS_ICHGTIME_CHG 0x2 /* inode field change timestamp */ -#define XFS_ICHGTIME_CREATE 0x4 /* inode create timestamp */ - -/* - * Per-fork incore inode flags. - */ -#define XFS_IFINLINE 0x01 /* Inline data is read in */ -#define XFS_IFEXTENTS 0x02 /* All extent pointers are read in */ -#define XFS_IFBROOT 0x04 /* i_broot points to the bmap b-tree root */ -#define XFS_IFEXTIREC 0x08 /* Indirection array of extent blocks */ - -/* - * Fork handling. - */ - -#define XFS_IFORK_Q(ip) ((ip)->i_d.di_forkoff != 0) -#define XFS_IFORK_BOFF(ip) ((int)((ip)->i_d.di_forkoff << 3)) - -#define XFS_IFORK_PTR(ip,w) \ - ((w) == XFS_DATA_FORK ? \ - &(ip)->i_df : \ - (ip)->i_afp) -#define XFS_IFORK_DSIZE(ip) \ - (XFS_IFORK_Q(ip) ? \ - XFS_IFORK_BOFF(ip) : \ - XFS_LITINO((ip)->i_mount, (ip)->i_d.di_version)) -#define XFS_IFORK_ASIZE(ip) \ - (XFS_IFORK_Q(ip) ? \ - XFS_LITINO((ip)->i_mount, (ip)->i_d.di_version) - \ - XFS_IFORK_BOFF(ip) : \ - 0) -#define XFS_IFORK_SIZE(ip,w) \ - ((w) == XFS_DATA_FORK ? \ - XFS_IFORK_DSIZE(ip) : \ - XFS_IFORK_ASIZE(ip)) -#define XFS_IFORK_FORMAT(ip,w) \ - ((w) == XFS_DATA_FORK ? \ - (ip)->i_d.di_format : \ - (ip)->i_d.di_aformat) -#define XFS_IFORK_FMT_SET(ip,w,n) \ - ((w) == XFS_DATA_FORK ? \ - ((ip)->i_d.di_format = (n)) : \ - ((ip)->i_d.di_aformat = (n))) -#define XFS_IFORK_NEXTENTS(ip,w) \ - ((w) == XFS_DATA_FORK ? \ - (ip)->i_d.di_nextents : \ - (ip)->i_d.di_anextents) -#define XFS_IFORK_NEXT_SET(ip,w,n) \ - ((w) == XFS_DATA_FORK ? \ - ((ip)->i_d.di_nextents = (n)) : \ - ((ip)->i_d.di_anextents = (n))) -#define XFS_IFORK_MAXEXT(ip, w) \ - (XFS_IFORK_SIZE(ip, w) / sizeof(xfs_bmbt_rec_t)) - - -#ifdef __KERNEL__ +struct xfs_dinode; +struct xfs_inode; struct xfs_buf; struct xfs_bmap_free; struct xfs_bmbt_irec; @@ -525,9 +315,21 @@ static inline int xfs_isiflocked(struct xfs_inode *ip) ((pip)->i_d.di_mode & S_ISGID)) -/* - * xfs_inode.c prototypes. - */ +int xfs_release(struct xfs_inode *ip); +int xfs_inactive(struct xfs_inode *ip); +int xfs_lookup(struct xfs_inode *dp, struct xfs_name *name, + struct xfs_inode **ipp, struct xfs_name *ci_name); +int xfs_create(struct xfs_inode *dp, struct xfs_name *name, + umode_t mode, xfs_dev_t rdev, struct xfs_inode **ipp); +int xfs_remove(struct xfs_inode *dp, struct xfs_name *name, + struct xfs_inode *ip); +int xfs_link(struct xfs_inode *tdp, struct xfs_inode *sip, + struct xfs_name *target_name); +int xfs_rename(struct xfs_inode *src_dp, struct xfs_name *src_name, + struct xfs_inode *src_ip, struct xfs_inode *target_dp, + struct xfs_name *target_name, + struct xfs_inode *target_ip); + void xfs_ilock(xfs_inode_t *, uint); int xfs_ilock_nowait(xfs_inode_t *, uint); void xfs_iunlock(xfs_inode_t *, uint); @@ -548,13 +350,28 @@ int xfs_itruncate_extents(struct xfs_trans **, struct xfs_inode *, int xfs_iunlink(struct xfs_trans *, xfs_inode_t *); void xfs_iext_realloc(xfs_inode_t *, int, int); + void xfs_iunpin_wait(xfs_inode_t *); +#define xfs_ipincount(ip) ((unsigned int) atomic_read(&ip->i_pincount)) + int xfs_iflush(struct xfs_inode *, struct xfs_buf **); void xfs_lock_inodes(xfs_inode_t **, int, uint); void xfs_lock_two_inodes(xfs_inode_t *, xfs_inode_t *, uint); xfs_extlen_t xfs_get_extsz_hint(struct xfs_inode *ip); +int xfs_dir_ialloc(struct xfs_trans **, struct xfs_inode *, umode_t, + xfs_nlink_t, xfs_dev_t, prid_t, int, + struct xfs_inode **, int *); +int xfs_droplink(struct xfs_trans *, struct xfs_inode *); +int xfs_bumplink(struct xfs_trans *, struct xfs_inode *); +void xfs_bump_ino_vers2(struct xfs_trans *, struct xfs_inode *); + +/* from xfs_file.c */ +int xfs_zero_eof(struct xfs_inode *, xfs_off_t, xfs_fsize_t); +int xfs_iozero(struct xfs_inode *, loff_t, size_t); + + #define IHOLD(ip) \ do { \ ASSERT(atomic_read(&VFS_I(ip)->i_count) > 0) ; \ @@ -568,65 +385,6 @@ do { \ iput(VFS_I(ip)); \ } while (0) -#endif /* __KERNEL__ */ - -/* - * Flags for xfs_iget() - */ -#define XFS_IGET_CREATE 0x1 -#define XFS_IGET_UNTRUSTED 0x2 -#define XFS_IGET_DONTCACHE 0x4 - -int xfs_imap_to_bp(struct xfs_mount *, struct xfs_trans *, - struct xfs_imap *, struct xfs_dinode **, - struct xfs_buf **, uint, uint); -int xfs_iread(struct xfs_mount *, struct xfs_trans *, - struct xfs_inode *, uint); -void xfs_dinode_calc_crc(struct xfs_mount *, struct xfs_dinode *); -void xfs_dinode_to_disk(struct xfs_dinode *, - struct xfs_icdinode *); -void xfs_idestroy_fork(struct xfs_inode *, int); -void xfs_idata_realloc(struct xfs_inode *, int, int); -void xfs_iroot_realloc(struct xfs_inode *, int, int); -int xfs_iread_extents(struct xfs_trans *, struct xfs_inode *, int); -int xfs_iextents_copy(struct xfs_inode *, xfs_bmbt_rec_t *, int); - -xfs_bmbt_rec_host_t *xfs_iext_get_ext(xfs_ifork_t *, xfs_extnum_t); -void xfs_iext_insert(xfs_inode_t *, xfs_extnum_t, xfs_extnum_t, - xfs_bmbt_irec_t *, int); -void xfs_iext_add(xfs_ifork_t *, xfs_extnum_t, int); -void xfs_iext_add_indirect_multi(xfs_ifork_t *, int, xfs_extnum_t, int); -void xfs_iext_remove(xfs_inode_t *, xfs_extnum_t, int, int); -void xfs_iext_remove_inline(xfs_ifork_t *, xfs_extnum_t, int); -void xfs_iext_remove_direct(xfs_ifork_t *, xfs_extnum_t, int); -void xfs_iext_remove_indirect(xfs_ifork_t *, xfs_extnum_t, int); -void xfs_iext_realloc_direct(xfs_ifork_t *, int); -void xfs_iext_direct_to_inline(xfs_ifork_t *, xfs_extnum_t); -void xfs_iext_inline_to_direct(xfs_ifork_t *, int); -void xfs_iext_destroy(xfs_ifork_t *); -xfs_bmbt_rec_host_t *xfs_iext_bno_to_ext(xfs_ifork_t *, xfs_fileoff_t, int *); -xfs_ext_irec_t *xfs_iext_bno_to_irec(xfs_ifork_t *, xfs_fileoff_t, int *); -xfs_ext_irec_t *xfs_iext_idx_to_irec(xfs_ifork_t *, xfs_extnum_t *, int *, int); -void xfs_iext_irec_init(xfs_ifork_t *); -xfs_ext_irec_t *xfs_iext_irec_new(xfs_ifork_t *, int); -void xfs_iext_irec_remove(xfs_ifork_t *, int); -void xfs_iext_irec_compact(xfs_ifork_t *); -void xfs_iext_irec_compact_pages(xfs_ifork_t *); -void xfs_iext_irec_compact_full(xfs_ifork_t *); -void xfs_iext_irec_update_extoffs(xfs_ifork_t *, int, int); -bool xfs_can_free_eofblocks(struct xfs_inode *, bool); - -#define xfs_ipincount(ip) ((unsigned int) atomic_read(&ip->i_pincount)) - -#if defined(DEBUG) -void xfs_inobp_check(struct xfs_mount *, struct xfs_buf *); -#else -#define xfs_inobp_check(mp, bp) -#endif /* DEBUG */ - -extern struct kmem_zone *xfs_ifork_zone; extern struct kmem_zone *xfs_inode_zone; -extern struct kmem_zone *xfs_ili_zone; -extern const struct xfs_buf_ops xfs_inode_buf_ops; #endif /* __XFS_INODE_H__ */ diff --git a/fs/xfs/xfs_inode_buf.c b/fs/xfs/xfs_inode_buf.c new file mode 100644 index 0000000..e011d59 --- /dev/null +++ b/fs/xfs/xfs_inode_buf.c @@ -0,0 +1,483 @@ +/* + * Copyright (c) 2000-2006 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include "xfs.h" +#include "xfs_fs.h" +#include "xfs_format.h" +#include "xfs_log.h" +#include "xfs_trans.h" +#include "xfs_sb.h" +#include "xfs_ag.h" +#include "xfs_mount.h" +#include "xfs_bmap_btree.h" +#include "xfs_ialloc_btree.h" +#include "xfs_dinode.h" +#include "xfs_inode.h" +#include "xfs_error.h" +#include "xfs_cksum.h" +#include "xfs_icache.h" +#include "xfs_ialloc.h" + +/* + * Check that none of the inode's in the buffer have a next + * unlinked field of 0. + */ +#if defined(DEBUG) +void +xfs_inobp_check( + xfs_mount_t *mp, + xfs_buf_t *bp) +{ + int i; + int j; + xfs_dinode_t *dip; + + j = mp->m_inode_cluster_size >> mp->m_sb.sb_inodelog; + + for (i = 0; i < j; i++) { + dip = (xfs_dinode_t *)xfs_buf_offset(bp, + i * mp->m_sb.sb_inodesize); + if (!dip->di_next_unlinked) { + xfs_alert(mp, + "Detected bogus zero next_unlinked field in incore inode buffer 0x%p.", + bp); + ASSERT(dip->di_next_unlinked); + } + } +} +#endif + +/* + * If we are doing readahead on an inode buffer, we might be in log recovery + * reading an inode allocation buffer that hasn't yet been replayed, and hence + * has not had the inode cores stamped into it. Hence for readahead, the buffer + * may be potentially invalid. + * + * If the readahead buffer is invalid, we don't want to mark it with an error, + * but we do want to clear the DONE status of the buffer so that a followup read + * will re-read it from disk. This will ensure that we don't get an unnecessary + * warnings during log recovery and we don't get unnecssary panics on debug + * kernels. + */ +static void +xfs_inode_buf_verify( + struct xfs_buf *bp, + bool readahead) +{ + struct xfs_mount *mp = bp->b_target->bt_mount; + int i; + int ni; + + /* + * Validate the magic number and version of every inode in the buffer + */ + ni = XFS_BB_TO_FSB(mp, bp->b_length) * mp->m_sb.sb_inopblock; + for (i = 0; i < ni; i++) { + int di_ok; + xfs_dinode_t *dip; + + dip = (struct xfs_dinode *)xfs_buf_offset(bp, + (i << mp->m_sb.sb_inodelog)); + di_ok = dip->di_magic == cpu_to_be16(XFS_DINODE_MAGIC) && + XFS_DINODE_GOOD_VERSION(dip->di_version); + if (unlikely(XFS_TEST_ERROR(!di_ok, mp, + XFS_ERRTAG_ITOBP_INOTOBP, + XFS_RANDOM_ITOBP_INOTOBP))) { + if (readahead) { + bp->b_flags &= ~XBF_DONE; + return; + } + + xfs_buf_ioerror(bp, EFSCORRUPTED); + XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_HIGH, + mp, dip); +#ifdef DEBUG + xfs_emerg(mp, + "bad inode magic/vsn daddr %lld #%d (magic=%x)", + (unsigned long long)bp->b_bn, i, + be16_to_cpu(dip->di_magic)); + ASSERT(0); +#endif + } + } + xfs_inobp_check(mp, bp); +} + + +static void +xfs_inode_buf_read_verify( + struct xfs_buf *bp) +{ + xfs_inode_buf_verify(bp, false); +} + +static void +xfs_inode_buf_readahead_verify( + struct xfs_buf *bp) +{ + xfs_inode_buf_verify(bp, true); +} + +static void +xfs_inode_buf_write_verify( + struct xfs_buf *bp) +{ + xfs_inode_buf_verify(bp, false); +} + +const struct xfs_buf_ops xfs_inode_buf_ops = { + .verify_read = xfs_inode_buf_read_verify, + .verify_write = xfs_inode_buf_write_verify, +}; + +const struct xfs_buf_ops xfs_inode_buf_ra_ops = { + .verify_read = xfs_inode_buf_readahead_verify, + .verify_write = xfs_inode_buf_write_verify, +}; + + +/* + * This routine is called to map an inode to the buffer containing the on-disk + * version of the inode. It returns a pointer to the buffer containing the + * on-disk inode in the bpp parameter, and in the dipp parameter it returns a + * pointer to the on-disk inode within that buffer. + * + * If a non-zero error is returned, then the contents of bpp and dipp are + * undefined. + */ +int +xfs_imap_to_bp( + struct xfs_mount *mp, + struct xfs_trans *tp, + struct xfs_imap *imap, + struct xfs_dinode **dipp, + struct xfs_buf **bpp, + uint buf_flags, + uint iget_flags) +{ + struct xfs_buf *bp; + int error; + + buf_flags |= XBF_UNMAPPED; + error = xfs_trans_read_buf(mp, tp, mp->m_ddev_targp, imap->im_blkno, + (int)imap->im_len, buf_flags, &bp, + &xfs_inode_buf_ops); + if (error) { + if (error == EAGAIN) { + ASSERT(buf_flags & XBF_TRYLOCK); + return error; + } + + if (error == EFSCORRUPTED && + (iget_flags & XFS_IGET_UNTRUSTED)) + return XFS_ERROR(EINVAL); + + xfs_warn(mp, "%s: xfs_trans_read_buf() returned error %d.", + __func__, error); + return error; + } + + *bpp = bp; + *dipp = (struct xfs_dinode *)xfs_buf_offset(bp, imap->im_boffset); + return 0; +} + +STATIC void +xfs_dinode_from_disk( + xfs_icdinode_t *to, + xfs_dinode_t *from) +{ + to->di_magic = be16_to_cpu(from->di_magic); + to->di_mode = be16_to_cpu(from->di_mode); + to->di_version = from ->di_version; + to->di_format = from->di_format; + to->di_onlink = be16_to_cpu(from->di_onlink); + to->di_uid = be32_to_cpu(from->di_uid); + to->di_gid = be32_to_cpu(from->di_gid); + to->di_nlink = be32_to_cpu(from->di_nlink); + to->di_projid_lo = be16_to_cpu(from->di_projid_lo); + to->di_projid_hi = be16_to_cpu(from->di_projid_hi); + memcpy(to->di_pad, from->di_pad, sizeof(to->di_pad)); + to->di_flushiter = be16_to_cpu(from->di_flushiter); + to->di_atime.t_sec = be32_to_cpu(from->di_atime.t_sec); + to->di_atime.t_nsec = be32_to_cpu(from->di_atime.t_nsec); + to->di_mtime.t_sec = be32_to_cpu(from->di_mtime.t_sec); + to->di_mtime.t_nsec = be32_to_cpu(from->di_mtime.t_nsec); + to->di_ctime.t_sec = be32_to_cpu(from->di_ctime.t_sec); + to->di_ctime.t_nsec = be32_to_cpu(from->di_ctime.t_nsec); + to->di_size = be64_to_cpu(from->di_size); + to->di_nblocks = be64_to_cpu(from->di_nblocks); + to->di_extsize = be32_to_cpu(from->di_extsize); + to->di_nextents = be32_to_cpu(from->di_nextents); + to->di_anextents = be16_to_cpu(from->di_anextents); + to->di_forkoff = from->di_forkoff; + to->di_aformat = from->di_aformat; + to->di_dmevmask = be32_to_cpu(from->di_dmevmask); + to->di_dmstate = be16_to_cpu(from->di_dmstate); + to->di_flags = be16_to_cpu(from->di_flags); + to->di_gen = be32_to_cpu(from->di_gen); + + if (to->di_version == 3) { + to->di_changecount = be64_to_cpu(from->di_changecount); + to->di_crtime.t_sec = be32_to_cpu(from->di_crtime.t_sec); + to->di_crtime.t_nsec = be32_to_cpu(from->di_crtime.t_nsec); + to->di_flags2 = be64_to_cpu(from->di_flags2); + to->di_ino = be64_to_cpu(from->di_ino); + to->di_lsn = be64_to_cpu(from->di_lsn); + memcpy(to->di_pad2, from->di_pad2, sizeof(to->di_pad2)); + uuid_copy(&to->di_uuid, &from->di_uuid); + } +} + +void +xfs_dinode_to_disk( + xfs_dinode_t *to, + xfs_icdinode_t *from) +{ + to->di_magic = cpu_to_be16(from->di_magic); + to->di_mode = cpu_to_be16(from->di_mode); + to->di_version = from ->di_version; + to->di_format = from->di_format; + to->di_onlink = cpu_to_be16(from->di_onlink); + to->di_uid = cpu_to_be32(from->di_uid); + to->di_gid = cpu_to_be32(from->di_gid); + to->di_nlink = cpu_to_be32(from->di_nlink); + to->di_projid_lo = cpu_to_be16(from->di_projid_lo); + to->di_projid_hi = cpu_to_be16(from->di_projid_hi); + memcpy(to->di_pad, from->di_pad, sizeof(to->di_pad)); + to->di_atime.t_sec = cpu_to_be32(from->di_atime.t_sec); + to->di_atime.t_nsec = cpu_to_be32(from->di_atime.t_nsec); + to->di_mtime.t_sec = cpu_to_be32(from->di_mtime.t_sec); + to->di_mtime.t_nsec = cpu_to_be32(from->di_mtime.t_nsec); + to->di_ctime.t_sec = cpu_to_be32(from->di_ctime.t_sec); + to->di_ctime.t_nsec = cpu_to_be32(from->di_ctime.t_nsec); + to->di_size = cpu_to_be64(from->di_size); + to->di_nblocks = cpu_to_be64(from->di_nblocks); + to->di_extsize = cpu_to_be32(from->di_extsize); + to->di_nextents = cpu_to_be32(from->di_nextents); + to->di_anextents = cpu_to_be16(from->di_anextents); + to->di_forkoff = from->di_forkoff; + to->di_aformat = from->di_aformat; + to->di_dmevmask = cpu_to_be32(from->di_dmevmask); + to->di_dmstate = cpu_to_be16(from->di_dmstate); + to->di_flags = cpu_to_be16(from->di_flags); + to->di_gen = cpu_to_be32(from->di_gen); + + if (from->di_version == 3) { + to->di_changecount = cpu_to_be64(from->di_changecount); + to->di_crtime.t_sec = cpu_to_be32(from->di_crtime.t_sec); + to->di_crtime.t_nsec = cpu_to_be32(from->di_crtime.t_nsec); + to->di_flags2 = cpu_to_be64(from->di_flags2); + to->di_ino = cpu_to_be64(from->di_ino); + to->di_lsn = cpu_to_be64(from->di_lsn); + memcpy(to->di_pad2, from->di_pad2, sizeof(to->di_pad2)); + uuid_copy(&to->di_uuid, &from->di_uuid); + to->di_flushiter = 0; + } else { + to->di_flushiter = cpu_to_be16(from->di_flushiter); + } +} + +static bool +xfs_dinode_verify( + struct xfs_mount *mp, + struct xfs_inode *ip, + struct xfs_dinode *dip) +{ + if (dip->di_magic != cpu_to_be16(XFS_DINODE_MAGIC)) + return false; + + /* only version 3 or greater inodes are extensively verified here */ + if (dip->di_version < 3) + return true; + + if (!xfs_sb_version_hascrc(&mp->m_sb)) + return false; + if (!xfs_verify_cksum((char *)dip, mp->m_sb.sb_inodesize, + offsetof(struct xfs_dinode, di_crc))) + return false; + if (be64_to_cpu(dip->di_ino) != ip->i_ino) + return false; + if (!uuid_equal(&dip->di_uuid, &mp->m_sb.sb_uuid)) + return false; + return true; +} + +void +xfs_dinode_calc_crc( + struct xfs_mount *mp, + struct xfs_dinode *dip) +{ + __uint32_t crc; + + if (dip->di_version < 3) + return; + + ASSERT(xfs_sb_version_hascrc(&mp->m_sb)); + crc = xfs_start_cksum((char *)dip, mp->m_sb.sb_inodesize, + offsetof(struct xfs_dinode, di_crc)); + dip->di_crc = xfs_end_cksum(crc); +} + +/* + * Read the disk inode attributes into the in-core inode structure. + * + * For version 5 superblocks, if we are initialising a new inode and we are not + * utilising the XFS_MOUNT_IKEEP inode cluster mode, we can simple build the new + * inode core with a random generation number. If we are keeping inodes around, + * we need to read the inode cluster to get the existing generation number off + * disk. Further, if we are using version 4 superblocks (i.e. v1/v2 inode + * format) then log recovery is dependent on the di_flushiter field being + * initialised from the current on-disk value and hence we must also read the + * inode off disk. + */ +int +xfs_iread( + xfs_mount_t *mp, + xfs_trans_t *tp, + xfs_inode_t *ip, + uint iget_flags) +{ + xfs_buf_t *bp; + xfs_dinode_t *dip; + int error; + + /* + * Fill in the location information in the in-core inode. + */ + error = xfs_imap(mp, tp, ip->i_ino, &ip->i_imap, iget_flags); + if (error) + return error; + + /* shortcut IO on inode allocation if possible */ + if ((iget_flags & XFS_IGET_CREATE) && + xfs_sb_version_hascrc(&mp->m_sb) && + !(mp->m_flags & XFS_MOUNT_IKEEP)) { + /* initialise the on-disk inode core */ + memset(&ip->i_d, 0, sizeof(ip->i_d)); + ip->i_d.di_magic = XFS_DINODE_MAGIC; + ip->i_d.di_gen = prandom_u32(); + if (xfs_sb_version_hascrc(&mp->m_sb)) { + ip->i_d.di_version = 3; + ip->i_d.di_ino = ip->i_ino; + uuid_copy(&ip->i_d.di_uuid, &mp->m_sb.sb_uuid); + } else + ip->i_d.di_version = 2; + return 0; + } + + /* + * Get pointers to the on-disk inode and the buffer containing it. + */ + error = xfs_imap_to_bp(mp, tp, &ip->i_imap, &dip, &bp, 0, iget_flags); + if (error) + return error; + + /* even unallocated inodes are verified */ + if (!xfs_dinode_verify(mp, ip, dip)) { + xfs_alert(mp, "%s: validation failed for inode %lld failed", + __func__, ip->i_ino); + + XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, dip); + error = XFS_ERROR(EFSCORRUPTED); + goto out_brelse; + } + + /* + * If the on-disk inode is already linked to a directory + * entry, copy all of the inode into the in-core inode. + * xfs_iformat_fork() handles copying in the inode format + * specific information. + * Otherwise, just get the truly permanent information. + */ + if (dip->di_mode) { + xfs_dinode_from_disk(&ip->i_d, dip); + error = xfs_iformat_fork(ip, dip); + if (error) { +#ifdef DEBUG + xfs_alert(mp, "%s: xfs_iformat() returned error %d", + __func__, error); +#endif /* DEBUG */ + goto out_brelse; + } + } else { + /* + * Partial initialisation of the in-core inode. Just the bits + * that xfs_ialloc won't overwrite or relies on being correct. + */ + ip->i_d.di_magic = be16_to_cpu(dip->di_magic); + ip->i_d.di_version = dip->di_version; + ip->i_d.di_gen = be32_to_cpu(dip->di_gen); + ip->i_d.di_flushiter = be16_to_cpu(dip->di_flushiter); + + if (dip->di_version == 3) { + ip->i_d.di_ino = be64_to_cpu(dip->di_ino); + uuid_copy(&ip->i_d.di_uuid, &dip->di_uuid); + } + + /* + * Make sure to pull in the mode here as well in + * case the inode is released without being used. + * This ensures that xfs_inactive() will see that + * the inode is already free and not try to mess + * with the uninitialized part of it. + */ + ip->i_d.di_mode = 0; + } + + /* + * The inode format changed when we moved the link count and + * made it 32 bits long. If this is an old format inode, + * convert it in memory to look like a new one. If it gets + * flushed to disk we will convert back before flushing or + * logging it. We zero out the new projid field and the old link + * count field. We'll handle clearing the pad field (the remains + * of the old uuid field) when we actually convert the inode to + * the new format. We don't change the version number so that we + * can distinguish this from a real new format inode. + */ + if (ip->i_d.di_version == 1) { + ip->i_d.di_nlink = ip->i_d.di_onlink; + ip->i_d.di_onlink = 0; + xfs_set_projid(ip, 0); + } + + ip->i_delayed_blks = 0; + + /* + * Mark the buffer containing the inode as something to keep + * around for a while. This helps to keep recently accessed + * meta-data in-core longer. + */ + xfs_buf_set_ref(bp, XFS_INO_REF); + + /* + * Use xfs_trans_brelse() to release the buffer containing the on-disk + * inode, because it was acquired with xfs_trans_read_buf() in + * xfs_imap_to_bp() above. If tp is NULL, this is just a normal + * brelse(). If we're within a transaction, then xfs_trans_brelse() + * will only release the buffer if it is not dirty within the + * transaction. It will be OK to release the buffer in this case, + * because inodes on disk are never destroyed and we will be locking the + * new in-core inode before putting it in the cache where other + * processes can find it. Thus we don't have to worry about the inode + * being changed just because we released the buffer. + */ + out_brelse: + xfs_trans_brelse(tp, bp); + return error; +} diff --git a/fs/xfs/xfs_inode_buf.h b/fs/xfs/xfs_inode_buf.h new file mode 100644 index 0000000..599e6c0 --- /dev/null +++ b/fs/xfs/xfs_inode_buf.h @@ -0,0 +1,53 @@ +/* + * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#ifndef __XFS_INODE_BUF_H__ +#define __XFS_INODE_BUF_H__ + +struct xfs_inode; +struct xfs_dinode; +struct xfs_icdinode; + +/* + * Inode location information. Stored in the inode and passed to + * xfs_imap_to_bp() to get a buffer and dinode for a given inode. + */ +struct xfs_imap { + xfs_daddr_t im_blkno; /* starting BB of inode chunk */ + ushort im_len; /* length in BBs of inode chunk */ + ushort im_boffset; /* inode offset in block in bytes */ +}; + +int xfs_imap_to_bp(struct xfs_mount *, struct xfs_trans *, + struct xfs_imap *, struct xfs_dinode **, + struct xfs_buf **, uint, uint); +int xfs_iread(struct xfs_mount *, struct xfs_trans *, + struct xfs_inode *, uint); +void xfs_dinode_calc_crc(struct xfs_mount *, struct xfs_dinode *); +void xfs_dinode_to_disk(struct xfs_dinode *, + struct xfs_icdinode *); + +#if defined(DEBUG) +void xfs_inobp_check(struct xfs_mount *, struct xfs_buf *); +#else +#define xfs_inobp_check(mp, bp) +#endif /* DEBUG */ + +extern const struct xfs_buf_ops xfs_inode_buf_ops; +extern const struct xfs_buf_ops xfs_inode_buf_ra_ops; + +#endif /* __XFS_INODE_BUF_H__ */ diff --git a/fs/xfs/xfs_inode_fork.c b/fs/xfs/xfs_inode_fork.c new file mode 100644 index 0000000..02f1083 --- /dev/null +++ b/fs/xfs/xfs_inode_fork.c @@ -0,0 +1,1920 @@ +/* + * Copyright (c) 2000-2006 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include <linux/log2.h> + +#include "xfs.h" +#include "xfs_fs.h" +#include "xfs_format.h" +#include "xfs_log.h" +#include "xfs_inum.h" +#include "xfs_trans.h" +#include "xfs_trans_priv.h" +#include "xfs_sb.h" +#include "xfs_ag.h" +#include "xfs_mount.h" +#include "xfs_bmap_btree.h" +#include "xfs_alloc_btree.h" +#include "xfs_ialloc_btree.h" +#include "xfs_attr_sf.h" +#include "xfs_dinode.h" +#include "xfs_inode.h" +#include "xfs_buf_item.h" +#include "xfs_inode_item.h" +#include "xfs_btree.h" +#include "xfs_alloc.h" +#include "xfs_ialloc.h" +#include "xfs_bmap.h" +#include "xfs_error.h" +#include "xfs_quota.h" +#include "xfs_filestream.h" +#include "xfs_cksum.h" +#include "xfs_trace.h" +#include "xfs_icache.h" + +kmem_zone_t *xfs_ifork_zone; + +STATIC int xfs_iformat_local(xfs_inode_t *, xfs_dinode_t *, int, int); +STATIC int xfs_iformat_extents(xfs_inode_t *, xfs_dinode_t *, int); +STATIC int xfs_iformat_btree(xfs_inode_t *, xfs_dinode_t *, int); + +#ifdef DEBUG +/* + * Make sure that the extents in the given memory buffer + * are valid. + */ +void +xfs_validate_extents( + xfs_ifork_t *ifp, + int nrecs, + xfs_exntfmt_t fmt) +{ + xfs_bmbt_irec_t irec; + xfs_bmbt_rec_host_t rec; + int i; + + for (i = 0; i < nrecs; i++) { + xfs_bmbt_rec_host_t *ep = xfs_iext_get_ext(ifp, i); + rec.l0 = get_unaligned(&ep->l0); + rec.l1 = get_unaligned(&ep->l1); + xfs_bmbt_get_all(&rec, &irec); + if (fmt == XFS_EXTFMT_NOSTATE) + ASSERT(irec.br_state == XFS_EXT_NORM); + } +} +#else /* DEBUG */ +#define xfs_validate_extents(ifp, nrecs, fmt) +#endif /* DEBUG */ + + +/* + * Move inode type and inode format specific information from the + * on-disk inode to the in-core inode. For fifos, devs, and sockets + * this means set if_rdev to the proper value. For files, directories, + * and symlinks this means to bring in the in-line data or extent + * pointers. For a file in B-tree format, only the root is immediately + * brought in-core. The rest will be in-lined in if_extents when it + * is first referenced (see xfs_iread_extents()). + */ +int +xfs_iformat_fork( + xfs_inode_t *ip, + xfs_dinode_t *dip) +{ + xfs_attr_shortform_t *atp; + int size; + int error = 0; + xfs_fsize_t di_size; + + if (unlikely(be32_to_cpu(dip->di_nextents) + + be16_to_cpu(dip->di_anextents) > + be64_to_cpu(dip->di_nblocks))) { + xfs_warn(ip->i_mount, + "corrupt dinode %Lu, extent total = %d, nblocks = %Lu.", + (unsigned long long)ip->i_ino, + (int)(be32_to_cpu(dip->di_nextents) + + be16_to_cpu(dip->di_anextents)), + (unsigned long long) + be64_to_cpu(dip->di_nblocks)); + XFS_CORRUPTION_ERROR("xfs_iformat(1)", XFS_ERRLEVEL_LOW, + ip->i_mount, dip); + return XFS_ERROR(EFSCORRUPTED); + } + + if (unlikely(dip->di_forkoff > ip->i_mount->m_sb.sb_inodesize)) { + xfs_warn(ip->i_mount, "corrupt dinode %Lu, forkoff = 0x%x.", + (unsigned long long)ip->i_ino, + dip->di_forkoff); + XFS_CORRUPTION_ERROR("xfs_iformat(2)", XFS_ERRLEVEL_LOW, + ip->i_mount, dip); + return XFS_ERROR(EFSCORRUPTED); + } + + if (unlikely((ip->i_d.di_flags & XFS_DIFLAG_REALTIME) && + !ip->i_mount->m_rtdev_targp)) { + xfs_warn(ip->i_mount, + "corrupt dinode %Lu, has realtime flag set.", + ip->i_ino); + XFS_CORRUPTION_ERROR("xfs_iformat(realtime)", + XFS_ERRLEVEL_LOW, ip->i_mount, dip); + return XFS_ERROR(EFSCORRUPTED); + } + + switch (ip->i_d.di_mode & S_IFMT) { + case S_IFIFO: + case S_IFCHR: + case S_IFBLK: + case S_IFSOCK: + if (unlikely(dip->di_format != XFS_DINODE_FMT_DEV)) { + XFS_CORRUPTION_ERROR("xfs_iformat(3)", XFS_ERRLEVEL_LOW, + ip->i_mount, dip); + return XFS_ERROR(EFSCORRUPTED); + } + ip->i_d.di_size = 0; + ip->i_df.if_u2.if_rdev = xfs_dinode_get_rdev(dip); + break; + + case S_IFREG: + case S_IFLNK: + case S_IFDIR: + switch (dip->di_format) { + case XFS_DINODE_FMT_LOCAL: + /* + * no local regular files yet + */ + if (unlikely(S_ISREG(be16_to_cpu(dip->di_mode)))) { + xfs_warn(ip->i_mount, + "corrupt inode %Lu (local format for regular file).", + (unsigned long long) ip->i_ino); + XFS_CORRUPTION_ERROR("xfs_iformat(4)", + XFS_ERRLEVEL_LOW, + ip->i_mount, dip); + return XFS_ERROR(EFSCORRUPTED); + } + + di_size = be64_to_cpu(dip->di_size); + if (unlikely(di_size < 0 || + di_size > XFS_DFORK_DSIZE(dip, ip->i_mount))) { + xfs_warn(ip->i_mount, + "corrupt inode %Lu (bad size %Ld for local inode).", + (unsigned long long) ip->i_ino, + (long long) di_size); + XFS_CORRUPTION_ERROR("xfs_iformat(5)", + XFS_ERRLEVEL_LOW, + ip->i_mount, dip); + return XFS_ERROR(EFSCORRUPTED); + } + + size = (int)di_size; + error = xfs_iformat_local(ip, dip, XFS_DATA_FORK, size); + break; + case XFS_DINODE_FMT_EXTENTS: + error = xfs_iformat_extents(ip, dip, XFS_DATA_FORK); + break; + case XFS_DINODE_FMT_BTREE: + error = xfs_iformat_btree(ip, dip, XFS_DATA_FORK); + break; + default: + XFS_ERROR_REPORT("xfs_iformat(6)", XFS_ERRLEVEL_LOW, + ip->i_mount); + return XFS_ERROR(EFSCORRUPTED); + } + break; + + default: + XFS_ERROR_REPORT("xfs_iformat(7)", XFS_ERRLEVEL_LOW, ip->i_mount); + return XFS_ERROR(EFSCORRUPTED); + } + if (error) { + return error; + } + if (!XFS_DFORK_Q(dip)) + return 0; + + ASSERT(ip->i_afp == NULL); + ip->i_afp = kmem_zone_zalloc(xfs_ifork_zone, KM_SLEEP | KM_NOFS); + + switch (dip->di_aformat) { + case XFS_DINODE_FMT_LOCAL: + atp = (xfs_attr_shortform_t *)XFS_DFORK_APTR(dip); + size = be16_to_cpu(atp->hdr.totsize); + + if (unlikely(size < sizeof(struct xfs_attr_sf_hdr))) { + xfs_warn(ip->i_mount, + "corrupt inode %Lu (bad attr fork size %Ld).", + (unsigned long long) ip->i_ino, + (long long) size); + XFS_CORRUPTION_ERROR("xfs_iformat(8)", + XFS_ERRLEVEL_LOW, + ip->i_mount, dip); + return XFS_ERROR(EFSCORRUPTED); + } + + error = xfs_iformat_local(ip, dip, XFS_ATTR_FORK, size); + break; + case XFS_DINODE_FMT_EXTENTS: + error = xfs_iformat_extents(ip, dip, XFS_ATTR_FORK); + break; + case XFS_DINODE_FMT_BTREE: + error = xfs_iformat_btree(ip, dip, XFS_ATTR_FORK); + break; + default: + error = XFS_ERROR(EFSCORRUPTED); + break; + } + if (error) { + kmem_zone_free(xfs_ifork_zone, ip->i_afp); + ip->i_afp = NULL; + xfs_idestroy_fork(ip, XFS_DATA_FORK); + } + return error; +} + +/* + * The file is in-lined in the on-disk inode. + * If it fits into if_inline_data, then copy + * it there, otherwise allocate a buffer for it + * and copy the data there. Either way, set + * if_data to point at the data. + * If we allocate a buffer for the data, make + * sure that its size is a multiple of 4 and + * record the real size in i_real_bytes. + */ +STATIC int +xfs_iformat_local( + xfs_inode_t *ip, + xfs_dinode_t *dip, + int whichfork, + int size) +{ + xfs_ifork_t *ifp; + int real_size; + + /* + * If the size is unreasonable, then something + * is wrong and we just bail out rather than crash in + * kmem_alloc() or memcpy() below. + */ + if (unlikely(size > XFS_DFORK_SIZE(dip, ip->i_mount, whichfork))) { + xfs_warn(ip->i_mount, + "corrupt inode %Lu (bad size %d for local fork, size = %d).", + (unsigned long long) ip->i_ino, size, + XFS_DFORK_SIZE(dip, ip->i_mount, whichfork)); + XFS_CORRUPTION_ERROR("xfs_iformat_local", XFS_ERRLEVEL_LOW, + ip->i_mount, dip); + return XFS_ERROR(EFSCORRUPTED); + } + ifp = XFS_IFORK_PTR(ip, whichfork); + real_size = 0; + if (size == 0) + ifp->if_u1.if_data = NULL; + else if (size <= sizeof(ifp->if_u2.if_inline_data)) + ifp->if_u1.if_data = ifp->if_u2.if_inline_data; + else { + real_size = roundup(size, 4); + ifp->if_u1.if_data = kmem_alloc(real_size, KM_SLEEP | KM_NOFS); + } + ifp->if_bytes = size; + ifp->if_real_bytes = real_size; + if (size) + memcpy(ifp->if_u1.if_data, XFS_DFORK_PTR(dip, whichfork), size); + ifp->if_flags &= ~XFS_IFEXTENTS; + ifp->if_flags |= XFS_IFINLINE; + return 0; +} + +/* + * The file consists of a set of extents all + * of which fit into the on-disk inode. + * If there are few enough extents to fit into + * the if_inline_ext, then copy them there. + * Otherwise allocate a buffer for them and copy + * them into it. Either way, set if_extents + * to point at the extents. + */ +STATIC int +xfs_iformat_extents( + xfs_inode_t *ip, + xfs_dinode_t *dip, + int whichfork) +{ + xfs_bmbt_rec_t *dp; + xfs_ifork_t *ifp; + int nex; + int size; + int i; + + ifp = XFS_IFORK_PTR(ip, whichfork); + nex = XFS_DFORK_NEXTENTS(dip, whichfork); + size = nex * (uint)sizeof(xfs_bmbt_rec_t); + + /* + * If the number of extents is unreasonable, then something + * is wrong and we just bail out rather than crash in + * kmem_alloc() or memcpy() below. + */ + if (unlikely(size < 0 || size > XFS_DFORK_SIZE(dip, ip->i_mount, whichfork))) { + xfs_warn(ip->i_mount, "corrupt inode %Lu ((a)extents = %d).", + (unsigned long long) ip->i_ino, nex); + XFS_CORRUPTION_ERROR("xfs_iformat_extents(1)", XFS_ERRLEVEL_LOW, + ip->i_mount, dip); + return XFS_ERROR(EFSCORRUPTED); + } + + ifp->if_real_bytes = 0; + if (nex == 0) + ifp->if_u1.if_extents = NULL; + else if (nex <= XFS_INLINE_EXTS) + ifp->if_u1.if_extents = ifp->if_u2.if_inline_ext; + else + xfs_iext_add(ifp, 0, nex); + + ifp->if_bytes = size; + if (size) { + dp = (xfs_bmbt_rec_t *) XFS_DFORK_PTR(dip, whichfork); + xfs_validate_extents(ifp, nex, XFS_EXTFMT_INODE(ip)); + for (i = 0; i < nex; i++, dp++) { + xfs_bmbt_rec_host_t *ep = xfs_iext_get_ext(ifp, i); + ep->l0 = get_unaligned_be64(&dp->l0); + ep->l1 = get_unaligned_be64(&dp->l1); + } + XFS_BMAP_TRACE_EXLIST(ip, nex, whichfork); + if (whichfork != XFS_DATA_FORK || + XFS_EXTFMT_INODE(ip) == XFS_EXTFMT_NOSTATE) + if (unlikely(xfs_check_nostate_extents( + ifp, 0, nex))) { + XFS_ERROR_REPORT("xfs_iformat_extents(2)", + XFS_ERRLEVEL_LOW, + ip->i_mount); + return XFS_ERROR(EFSCORRUPTED); + } + } + ifp->if_flags |= XFS_IFEXTENTS; + return 0; +} + +/* + * The file has too many extents to fit into + * the inode, so they are in B-tree format. + * Allocate a buffer for the root of the B-tree + * and copy the root into it. The i_extents + * field will remain NULL until all of the + * extents are read in (when they are needed). + */ +STATIC int +xfs_iformat_btree( + xfs_inode_t *ip, + xfs_dinode_t *dip, + int whichfork) +{ + struct xfs_mount *mp = ip->i_mount; + xfs_bmdr_block_t *dfp; + xfs_ifork_t *ifp; + /* REFERENCED */ + int nrecs; + int size; + + ifp = XFS_IFORK_PTR(ip, whichfork); + dfp = (xfs_bmdr_block_t *)XFS_DFORK_PTR(dip, whichfork); + size = XFS_BMAP_BROOT_SPACE(mp, dfp); + nrecs = be16_to_cpu(dfp->bb_numrecs); + + /* + * blow out if -- fork has less extents than can fit in + * fork (fork shouldn't be a btree format), root btree + * block has more records than can fit into the fork, + * or the number of extents is greater than the number of + * blocks. + */ + if (unlikely(XFS_IFORK_NEXTENTS(ip, whichfork) <= + XFS_IFORK_MAXEXT(ip, whichfork) || + XFS_BMDR_SPACE_CALC(nrecs) > + XFS_DFORK_SIZE(dip, mp, whichfork) || + XFS_IFORK_NEXTENTS(ip, whichfork) > ip->i_d.di_nblocks)) { + xfs_warn(mp, "corrupt inode %Lu (btree).", + (unsigned long long) ip->i_ino); + XFS_CORRUPTION_ERROR("xfs_iformat_btree", XFS_ERRLEVEL_LOW, + mp, dip); + return XFS_ERROR(EFSCORRUPTED); + } + + ifp->if_broot_bytes = size; + ifp->if_broot = kmem_alloc(size, KM_SLEEP | KM_NOFS); + ASSERT(ifp->if_broot != NULL); + /* + * Copy and convert from the on-disk structure + * to the in-memory structure. + */ + xfs_bmdr_to_bmbt(ip, dfp, XFS_DFORK_SIZE(dip, ip->i_mount, whichfork), + ifp->if_broot, size); + ifp->if_flags &= ~XFS_IFEXTENTS; + ifp->if_flags |= XFS_IFBROOT; + + return 0; +} + +/* + * Read in extents from a btree-format inode. + * Allocate and fill in if_extents. Real work is done in xfs_bmap.c. + */ +int +xfs_iread_extents( + xfs_trans_t *tp, + xfs_inode_t *ip, + int whichfork) +{ + int error; + xfs_ifork_t *ifp; + xfs_extnum_t nextents; + + if (unlikely(XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE)) { + XFS_ERROR_REPORT("xfs_iread_extents", XFS_ERRLEVEL_LOW, + ip->i_mount); + return XFS_ERROR(EFSCORRUPTED); + } + nextents = XFS_IFORK_NEXTENTS(ip, whichfork); + ifp = XFS_IFORK_PTR(ip, whichfork); + + /* + * We know that the size is valid (it's checked in iformat_btree) + */ + ifp->if_bytes = ifp->if_real_bytes = 0; + ifp->if_flags |= XFS_IFEXTENTS; + xfs_iext_add(ifp, 0, nextents); + error = xfs_bmap_read_extents(tp, ip, whichfork); + if (error) { + xfs_iext_destroy(ifp); + ifp->if_flags &= ~XFS_IFEXTENTS; + return error; + } + xfs_validate_extents(ifp, nextents, XFS_EXTFMT_INODE(ip)); + return 0; +} +/* + * Reallocate the space for if_broot based on the number of records + * being added or deleted as indicated in rec_diff. Move the records + * and pointers in if_broot to fit the new size. When shrinking this + * will eliminate holes between the records and pointers created by + * the caller. When growing this will create holes to be filled in + * by the caller. + * + * The caller must not request to add more records than would fit in + * the on-disk inode root. If the if_broot is currently NULL, then + * if we are adding records, one will be allocated. The caller must also + * not request that the number of records go below zero, although + * it can go to zero. + * + * ip -- the inode whose if_broot area is changing + * ext_diff -- the change in the number of records, positive or negative, + * requested for the if_broot array. + */ +void +xfs_iroot_realloc( + xfs_inode_t *ip, + int rec_diff, + int whichfork) +{ + struct xfs_mount *mp = ip->i_mount; + int cur_max; + xfs_ifork_t *ifp; + struct xfs_btree_block *new_broot; + int new_max; + size_t new_size; + char *np; + char *op; + + /* + * Handle the degenerate case quietly. + */ + if (rec_diff == 0) { + return; + } + + ifp = XFS_IFORK_PTR(ip, whichfork); + if (rec_diff > 0) { + /* + * If there wasn't any memory allocated before, just + * allocate it now and get out. + */ + if (ifp->if_broot_bytes == 0) { + new_size = XFS_BMAP_BROOT_SPACE_CALC(mp, rec_diff); + ifp->if_broot = kmem_alloc(new_size, KM_SLEEP | KM_NOFS); + ifp->if_broot_bytes = (int)new_size; + return; + } + + /* + * If there is already an existing if_broot, then we need + * to realloc() it and shift the pointers to their new + * location. The records don't change location because + * they are kept butted up against the btree block header. + */ + cur_max = xfs_bmbt_maxrecs(mp, ifp->if_broot_bytes, 0); + new_max = cur_max + rec_diff; + new_size = XFS_BMAP_BROOT_SPACE_CALC(mp, new_max); + ifp->if_broot = kmem_realloc(ifp->if_broot, new_size, + XFS_BMAP_BROOT_SPACE_CALC(mp, cur_max), + KM_SLEEP | KM_NOFS); + op = (char *)XFS_BMAP_BROOT_PTR_ADDR(mp, ifp->if_broot, 1, + ifp->if_broot_bytes); + np = (char *)XFS_BMAP_BROOT_PTR_ADDR(mp, ifp->if_broot, 1, + (int)new_size); + ifp->if_broot_bytes = (int)new_size; + ASSERT(XFS_BMAP_BMDR_SPACE(ifp->if_broot) <= + XFS_IFORK_SIZE(ip, whichfork)); + memmove(np, op, cur_max * (uint)sizeof(xfs_dfsbno_t)); + return; + } + + /* + * rec_diff is less than 0. In this case, we are shrinking the + * if_broot buffer. It must already exist. If we go to zero + * records, just get rid of the root and clear the status bit. + */ + ASSERT((ifp->if_broot != NULL) && (ifp->if_broot_bytes > 0)); + cur_max = xfs_bmbt_maxrecs(mp, ifp->if_broot_bytes, 0); + new_max = cur_max + rec_diff; + ASSERT(new_max >= 0); + if (new_max > 0) + new_size = XFS_BMAP_BROOT_SPACE_CALC(mp, new_max); + else + new_size = 0; + if (new_size > 0) { + new_broot = kmem_alloc(new_size, KM_SLEEP | KM_NOFS); + /* + * First copy over the btree block header. + */ + memcpy(new_broot, ifp->if_broot, + XFS_BMBT_BLOCK_LEN(ip->i_mount)); + } else { + new_broot = NULL; + ifp->if_flags &= ~XFS_IFBROOT; + } + + /* + * Only copy the records and pointers if there are any. + */ + if (new_max > 0) { + /* + * First copy the records. + */ + op = (char *)XFS_BMBT_REC_ADDR(mp, ifp->if_broot, 1); + np = (char *)XFS_BMBT_REC_ADDR(mp, new_broot, 1); + memcpy(np, op, new_max * (uint)sizeof(xfs_bmbt_rec_t)); + + /* + * Then copy the pointers. + */ + op = (char *)XFS_BMAP_BROOT_PTR_ADDR(mp, ifp->if_broot, 1, + ifp->if_broot_bytes); + np = (char *)XFS_BMAP_BROOT_PTR_ADDR(mp, new_broot, 1, + (int)new_size); + memcpy(np, op, new_max * (uint)sizeof(xfs_dfsbno_t)); + } + kmem_free(ifp->if_broot); + ifp->if_broot = new_broot; + ifp->if_broot_bytes = (int)new_size; + if (ifp->if_broot) + ASSERT(XFS_BMAP_BMDR_SPACE(ifp->if_broot) <= + XFS_IFORK_SIZE(ip, whichfork)); + return; +} + + +/* + * This is called when the amount of space needed for if_data + * is increased or decreased. The change in size is indicated by + * the number of bytes that need to be added or deleted in the + * byte_diff parameter. + * + * If the amount of space needed has decreased below the size of the + * inline buffer, then switch to using the inline buffer. Otherwise, + * use kmem_realloc() or kmem_alloc() to adjust the size of the buffer + * to what is needed. + * + * ip -- the inode whose if_data area is changing + * byte_diff -- the change in the number of bytes, positive or negative, + * requested for the if_data array. + */ +void +xfs_idata_realloc( + xfs_inode_t *ip, + int byte_diff, + int whichfork) +{ + xfs_ifork_t *ifp; + int new_size; + int real_size; + + if (byte_diff == 0) { + return; + } + + ifp = XFS_IFORK_PTR(ip, whichfork); + new_size = (int)ifp->if_bytes + byte_diff; + ASSERT(new_size >= 0); + + if (new_size == 0) { + if (ifp->if_u1.if_data != ifp->if_u2.if_inline_data) { + kmem_free(ifp->if_u1.if_data); + } + ifp->if_u1.if_data = NULL; + real_size = 0; + } else if (new_size <= sizeof(ifp->if_u2.if_inline_data)) { + /* + * If the valid extents/data can fit in if_inline_ext/data, + * copy them from the malloc'd vector and free it. + */ + if (ifp->if_u1.if_data == NULL) { + ifp->if_u1.if_data = ifp->if_u2.if_inline_data; + } else if (ifp->if_u1.if_data != ifp->if_u2.if_inline_data) { + ASSERT(ifp->if_real_bytes != 0); + memcpy(ifp->if_u2.if_inline_data, ifp->if_u1.if_data, + new_size); + kmem_free(ifp->if_u1.if_data); + ifp->if_u1.if_data = ifp->if_u2.if_inline_data; + } + real_size = 0; + } else { + /* + * Stuck with malloc/realloc. + * For inline data, the underlying buffer must be + * a multiple of 4 bytes in size so that it can be + * logged and stay on word boundaries. We enforce + * that here. + */ + real_size = roundup(new_size, 4); + if (ifp->if_u1.if_data == NULL) { + ASSERT(ifp->if_real_bytes == 0); + ifp->if_u1.if_data = kmem_alloc(real_size, + KM_SLEEP | KM_NOFS); + } else if (ifp->if_u1.if_data != ifp->if_u2.if_inline_data) { + /* + * Only do the realloc if the underlying size + * is really changing. + */ + if (ifp->if_real_bytes != real_size) { + ifp->if_u1.if_data = + kmem_realloc(ifp->if_u1.if_data, + real_size, + ifp->if_real_bytes, + KM_SLEEP | KM_NOFS); + } + } else { + ASSERT(ifp->if_real_bytes == 0); + ifp->if_u1.if_data = kmem_alloc(real_size, + KM_SLEEP | KM_NOFS); + memcpy(ifp->if_u1.if_data, ifp->if_u2.if_inline_data, + ifp->if_bytes); + } + } + ifp->if_real_bytes = real_size; + ifp->if_bytes = new_size; + ASSERT(ifp->if_bytes <= XFS_IFORK_SIZE(ip, whichfork)); +} + +void +xfs_idestroy_fork( + xfs_inode_t *ip, + int whichfork) +{ + xfs_ifork_t *ifp; + + ifp = XFS_IFORK_PTR(ip, whichfork); + if (ifp->if_broot != NULL) { + kmem_free(ifp->if_broot); + ifp->if_broot = NULL; + } + + /* + * If the format is local, then we can't have an extents + * array so just look for an inline data array. If we're + * not local then we may or may not have an extents list, + * so check and free it up if we do. + */ + if (XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL) { + if ((ifp->if_u1.if_data != ifp->if_u2.if_inline_data) && + (ifp->if_u1.if_data != NULL)) { + ASSERT(ifp->if_real_bytes != 0); + kmem_free(ifp->if_u1.if_data); + ifp->if_u1.if_data = NULL; + ifp->if_real_bytes = 0; + } + } else if ((ifp->if_flags & XFS_IFEXTENTS) && + ((ifp->if_flags & XFS_IFEXTIREC) || + ((ifp->if_u1.if_extents != NULL) && + (ifp->if_u1.if_extents != ifp->if_u2.if_inline_ext)))) { + ASSERT(ifp->if_real_bytes != 0); + xfs_iext_destroy(ifp); + } + ASSERT(ifp->if_u1.if_extents == NULL || + ifp->if_u1.if_extents == ifp->if_u2.if_inline_ext); + ASSERT(ifp->if_real_bytes == 0); + if (whichfork == XFS_ATTR_FORK) { + kmem_zone_free(xfs_ifork_zone, ip->i_afp); + ip->i_afp = NULL; + } +} + +/* + * xfs_iextents_copy() + * + * This is called to copy the REAL extents (as opposed to the delayed + * allocation extents) from the inode into the given buffer. It + * returns the number of bytes copied into the buffer. + * + * If there are no delayed allocation extents, then we can just + * memcpy() the extents into the buffer. Otherwise, we need to + * examine each extent in turn and skip those which are delayed. + */ +int +xfs_iextents_copy( + xfs_inode_t *ip, + xfs_bmbt_rec_t *dp, + int whichfork) +{ + int copied; + int i; + xfs_ifork_t *ifp; + int nrecs; + xfs_fsblock_t start_block; + + ifp = XFS_IFORK_PTR(ip, whichfork); + ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED)); + ASSERT(ifp->if_bytes > 0); + + nrecs = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); + XFS_BMAP_TRACE_EXLIST(ip, nrecs, whichfork); + ASSERT(nrecs > 0); + + /* + * There are some delayed allocation extents in the + * inode, so copy the extents one at a time and skip + * the delayed ones. There must be at least one + * non-delayed extent. + */ + copied = 0; + for (i = 0; i < nrecs; i++) { + xfs_bmbt_rec_host_t *ep = xfs_iext_get_ext(ifp, i); + start_block = xfs_bmbt_get_startblock(ep); + if (isnullstartblock(start_block)) { + /* + * It's a delayed allocation extent, so skip it. + */ + continue; + } + + /* Translate to on disk format */ + put_unaligned_be64(ep->l0, &dp->l0); + put_unaligned_be64(ep->l1, &dp->l1); + dp++; + copied++; + } + ASSERT(copied != 0); + xfs_validate_extents(ifp, copied, XFS_EXTFMT_INODE(ip)); + + return (copied * (uint)sizeof(xfs_bmbt_rec_t)); +} + +/* + * Each of the following cases stores data into the same region + * of the on-disk inode, so only one of them can be valid at + * any given time. While it is possible to have conflicting formats + * and log flags, e.g. having XFS_ILOG_?DATA set when the fork is + * in EXTENTS format, this can only happen when the fork has + * changed formats after being modified but before being flushed. + * In these cases, the format always takes precedence, because the + * format indicates the current state of the fork. + */ +void +xfs_iflush_fork( + xfs_inode_t *ip, + xfs_dinode_t *dip, + xfs_inode_log_item_t *iip, + int whichfork, + xfs_buf_t *bp) +{ + char *cp; + xfs_ifork_t *ifp; + xfs_mount_t *mp; + static const short brootflag[2] = + { XFS_ILOG_DBROOT, XFS_ILOG_ABROOT }; + static const short dataflag[2] = + { XFS_ILOG_DDATA, XFS_ILOG_ADATA }; + static const short extflag[2] = + { XFS_ILOG_DEXT, XFS_ILOG_AEXT }; + + if (!iip) + return; + ifp = XFS_IFORK_PTR(ip, whichfork); + /* + * This can happen if we gave up in iformat in an error path, + * for the attribute fork. + */ + if (!ifp) { + ASSERT(whichfork == XFS_ATTR_FORK); + return; + } + cp = XFS_DFORK_PTR(dip, whichfork); + mp = ip->i_mount; + switch (XFS_IFORK_FORMAT(ip, whichfork)) { + case XFS_DINODE_FMT_LOCAL: + if ((iip->ili_fields & dataflag[whichfork]) && + (ifp->if_bytes > 0)) { + ASSERT(ifp->if_u1.if_data != NULL); + ASSERT(ifp->if_bytes <= XFS_IFORK_SIZE(ip, whichfork)); + memcpy(cp, ifp->if_u1.if_data, ifp->if_bytes); + } + break; + + case XFS_DINODE_FMT_EXTENTS: + ASSERT((ifp->if_flags & XFS_IFEXTENTS) || + !(iip->ili_fields & extflag[whichfork])); + if ((iip->ili_fields & extflag[whichfork]) && + (ifp->if_bytes > 0)) { + ASSERT(xfs_iext_get_ext(ifp, 0)); + ASSERT(XFS_IFORK_NEXTENTS(ip, whichfork) > 0); + (void)xfs_iextents_copy(ip, (xfs_bmbt_rec_t *)cp, + whichfork); + } + break; + + case XFS_DINODE_FMT_BTREE: + if ((iip->ili_fields & brootflag[whichfork]) && + (ifp->if_broot_bytes > 0)) { + ASSERT(ifp->if_broot != NULL); + ASSERT(XFS_BMAP_BMDR_SPACE(ifp->if_broot) <= + XFS_IFORK_SIZE(ip, whichfork)); + xfs_bmbt_to_bmdr(mp, ifp->if_broot, ifp->if_broot_bytes, + (xfs_bmdr_block_t *)cp, + XFS_DFORK_SIZE(dip, mp, whichfork)); + } + break; + + case XFS_DINODE_FMT_DEV: + if (iip->ili_fields & XFS_ILOG_DEV) { + ASSERT(whichfork == XFS_DATA_FORK); + xfs_dinode_put_rdev(dip, ip->i_df.if_u2.if_rdev); + } + break; + + case XFS_DINODE_FMT_UUID: + if (iip->ili_fields & XFS_ILOG_UUID) { + ASSERT(whichfork == XFS_DATA_FORK); + memcpy(XFS_DFORK_DPTR(dip), + &ip->i_df.if_u2.if_uuid, + sizeof(uuid_t)); + } + break; + + default: + ASSERT(0); + break; + } +} + +/* + * Return a pointer to the extent record at file index idx. + */ +xfs_bmbt_rec_host_t * +xfs_iext_get_ext( + xfs_ifork_t *ifp, /* inode fork pointer */ + xfs_extnum_t idx) /* index of target extent */ +{ + ASSERT(idx >= 0); + ASSERT(idx < ifp->if_bytes / sizeof(xfs_bmbt_rec_t)); + + if ((ifp->if_flags & XFS_IFEXTIREC) && (idx == 0)) { + return ifp->if_u1.if_ext_irec->er_extbuf; + } else if (ifp->if_flags & XFS_IFEXTIREC) { + xfs_ext_irec_t *erp; /* irec pointer */ + int erp_idx = 0; /* irec index */ + xfs_extnum_t page_idx = idx; /* ext index in target list */ + + erp = xfs_iext_idx_to_irec(ifp, &page_idx, &erp_idx, 0); + return &erp->er_extbuf[page_idx]; + } else if (ifp->if_bytes) { + return &ifp->if_u1.if_extents[idx]; + } else { + return NULL; + } +} + +/* + * Insert new item(s) into the extent records for incore inode + * fork 'ifp'. 'count' new items are inserted at index 'idx'. + */ +void +xfs_iext_insert( + xfs_inode_t *ip, /* incore inode pointer */ + xfs_extnum_t idx, /* starting index of new items */ + xfs_extnum_t count, /* number of inserted items */ + xfs_bmbt_irec_t *new, /* items to insert */ + int state) /* type of extent conversion */ +{ + xfs_ifork_t *ifp = (state & BMAP_ATTRFORK) ? ip->i_afp : &ip->i_df; + xfs_extnum_t i; /* extent record index */ + + trace_xfs_iext_insert(ip, idx, new, state, _RET_IP_); + + ASSERT(ifp->if_flags & XFS_IFEXTENTS); + xfs_iext_add(ifp, idx, count); + for (i = idx; i < idx + count; i++, new++) + xfs_bmbt_set_all(xfs_iext_get_ext(ifp, i), new); +} + +/* + * This is called when the amount of space required for incore file + * extents needs to be increased. The ext_diff parameter stores the + * number of new extents being added and the idx parameter contains + * the extent index where the new extents will be added. If the new + * extents are being appended, then we just need to (re)allocate and + * initialize the space. Otherwise, if the new extents are being + * inserted into the middle of the existing entries, a bit more work + * is required to make room for the new extents to be inserted. The + * caller is responsible for filling in the new extent entries upon + * return. + */ +void +xfs_iext_add( + xfs_ifork_t *ifp, /* inode fork pointer */ + xfs_extnum_t idx, /* index to begin adding exts */ + int ext_diff) /* number of extents to add */ +{ + int byte_diff; /* new bytes being added */ + int new_size; /* size of extents after adding */ + xfs_extnum_t nextents; /* number of extents in file */ + + nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); + ASSERT((idx >= 0) && (idx <= nextents)); + byte_diff = ext_diff * sizeof(xfs_bmbt_rec_t); + new_size = ifp->if_bytes + byte_diff; + /* + * If the new number of extents (nextents + ext_diff) + * fits inside the inode, then continue to use the inline + * extent buffer. + */ + if (nextents + ext_diff <= XFS_INLINE_EXTS) { + if (idx < nextents) { + memmove(&ifp->if_u2.if_inline_ext[idx + ext_diff], + &ifp->if_u2.if_inline_ext[idx], + (nextents - idx) * sizeof(xfs_bmbt_rec_t)); + memset(&ifp->if_u2.if_inline_ext[idx], 0, byte_diff); + } + ifp->if_u1.if_extents = ifp->if_u2.if_inline_ext; + ifp->if_real_bytes = 0; + } + /* + * Otherwise use a linear (direct) extent list. + * If the extents are currently inside the inode, + * xfs_iext_realloc_direct will switch us from + * inline to direct extent allocation mode. + */ + else if (nextents + ext_diff <= XFS_LINEAR_EXTS) { + xfs_iext_realloc_direct(ifp, new_size); + if (idx < nextents) { + memmove(&ifp->if_u1.if_extents[idx + ext_diff], + &ifp->if_u1.if_extents[idx], + (nextents - idx) * sizeof(xfs_bmbt_rec_t)); + memset(&ifp->if_u1.if_extents[idx], 0, byte_diff); + } + } + /* Indirection array */ + else { + xfs_ext_irec_t *erp; + int erp_idx = 0; + int page_idx = idx; + + ASSERT(nextents + ext_diff > XFS_LINEAR_EXTS); + if (ifp->if_flags & XFS_IFEXTIREC) { + erp = xfs_iext_idx_to_irec(ifp, &page_idx, &erp_idx, 1); + } else { + xfs_iext_irec_init(ifp); + ASSERT(ifp->if_flags & XFS_IFEXTIREC); + erp = ifp->if_u1.if_ext_irec; + } + /* Extents fit in target extent page */ + if (erp && erp->er_extcount + ext_diff <= XFS_LINEAR_EXTS) { + if (page_idx < erp->er_extcount) { + memmove(&erp->er_extbuf[page_idx + ext_diff], + &erp->er_extbuf[page_idx], + (erp->er_extcount - page_idx) * + sizeof(xfs_bmbt_rec_t)); + memset(&erp->er_extbuf[page_idx], 0, byte_diff); + } + erp->er_extcount += ext_diff; + xfs_iext_irec_update_extoffs(ifp, erp_idx + 1, ext_diff); + } + /* Insert a new extent page */ + else if (erp) { + xfs_iext_add_indirect_multi(ifp, + erp_idx, page_idx, ext_diff); + } + /* + * If extent(s) are being appended to the last page in + * the indirection array and the new extent(s) don't fit + * in the page, then erp is NULL and erp_idx is set to + * the next index needed in the indirection array. + */ + else { + int count = ext_diff; + + while (count) { + erp = xfs_iext_irec_new(ifp, erp_idx); + erp->er_extcount = count; + count -= MIN(count, (int)XFS_LINEAR_EXTS); + if (count) { + erp_idx++; + } + } + } + } + ifp->if_bytes = new_size; +} + +/* + * This is called when incore extents are being added to the indirection + * array and the new extents do not fit in the target extent list. The + * erp_idx parameter contains the irec index for the target extent list + * in the indirection array, and the idx parameter contains the extent + * index within the list. The number of extents being added is stored + * in the count parameter. + * + * |-------| |-------| + * | | | | idx - number of extents before idx + * | idx | | count | + * | | | | count - number of extents being inserted at idx + * |-------| |-------| + * | count | | nex2 | nex2 - number of extents after idx + count + * |-------| |-------| + */ +void +xfs_iext_add_indirect_multi( + xfs_ifork_t *ifp, /* inode fork pointer */ + int erp_idx, /* target extent irec index */ + xfs_extnum_t idx, /* index within target list */ + int count) /* new extents being added */ +{ + int byte_diff; /* new bytes being added */ + xfs_ext_irec_t *erp; /* pointer to irec entry */ + xfs_extnum_t ext_diff; /* number of extents to add */ + xfs_extnum_t ext_cnt; /* new extents still needed */ + xfs_extnum_t nex2; /* extents after idx + count */ + xfs_bmbt_rec_t *nex2_ep = NULL; /* temp list for nex2 extents */ + int nlists; /* number of irec's (lists) */ + + ASSERT(ifp->if_flags & XFS_IFEXTIREC); + erp = &ifp->if_u1.if_ext_irec[erp_idx]; + nex2 = erp->er_extcount - idx; + nlists = ifp->if_real_bytes / XFS_IEXT_BUFSZ; + + /* + * Save second part of target extent list + * (all extents past */ + if (nex2) { + byte_diff = nex2 * sizeof(xfs_bmbt_rec_t); + nex2_ep = (xfs_bmbt_rec_t *) kmem_alloc(byte_diff, KM_NOFS); + memmove(nex2_ep, &erp->er_extbuf[idx], byte_diff); + erp->er_extcount -= nex2; + xfs_iext_irec_update_extoffs(ifp, erp_idx + 1, -nex2); + memset(&erp->er_extbuf[idx], 0, byte_diff); + } + + /* + * Add the new extents to the end of the target + * list, then allocate new irec record(s) and + * extent buffer(s) as needed to store the rest + * of the new extents. + */ + ext_cnt = count; + ext_diff = MIN(ext_cnt, (int)XFS_LINEAR_EXTS - erp->er_extcount); + if (ext_diff) { + erp->er_extcount += ext_diff; + xfs_iext_irec_update_extoffs(ifp, erp_idx + 1, ext_diff); + ext_cnt -= ext_diff; + } + while (ext_cnt) { + erp_idx++; + erp = xfs_iext_irec_new(ifp, erp_idx); + ext_diff = MIN(ext_cnt, (int)XFS_LINEAR_EXTS); + erp->er_extcount = ext_diff; + xfs_iext_irec_update_extoffs(ifp, erp_idx + 1, ext_diff); + ext_cnt -= ext_diff; + } + + /* Add nex2 extents back to indirection array */ + if (nex2) { + xfs_extnum_t ext_avail; + int i; + + byte_diff = nex2 * sizeof(xfs_bmbt_rec_t); + ext_avail = XFS_LINEAR_EXTS - erp->er_extcount; + i = 0; + /* + * If nex2 extents fit in the current page, append + * nex2_ep after the new extents. + */ + if (nex2 <= ext_avail) { + i = erp->er_extcount; + } + /* + * Otherwise, check if space is available in the + * next page. + */ + else if ((erp_idx < nlists - 1) && + (nex2 <= (ext_avail = XFS_LINEAR_EXTS - + ifp->if_u1.if_ext_irec[erp_idx+1].er_extcount))) { + erp_idx++; + erp++; + /* Create a hole for nex2 extents */ + memmove(&erp->er_extbuf[nex2], erp->er_extbuf, + erp->er_extcount * sizeof(xfs_bmbt_rec_t)); + } + /* + * Final choice, create a new extent page for + * nex2 extents. + */ + else { + erp_idx++; + erp = xfs_iext_irec_new(ifp, erp_idx); + } + memmove(&erp->er_extbuf[i], nex2_ep, byte_diff); + kmem_free(nex2_ep); + erp->er_extcount += nex2; + xfs_iext_irec_update_extoffs(ifp, erp_idx + 1, nex2); + } +} + +/* + * This is called when the amount of space required for incore file + * extents needs to be decreased. The ext_diff parameter stores the + * number of extents to be removed and the idx parameter contains + * the extent index where the extents will be removed from. + * + * If the amount of space needed has decreased below the linear + * limit, XFS_IEXT_BUFSZ, then switch to using the contiguous + * extent array. Otherwise, use kmem_realloc() to adjust the + * size to what is needed. + */ +void +xfs_iext_remove( + xfs_inode_t *ip, /* incore inode pointer */ + xfs_extnum_t idx, /* index to begin removing exts */ + int ext_diff, /* number of extents to remove */ + int state) /* type of extent conversion */ +{ + xfs_ifork_t *ifp = (state & BMAP_ATTRFORK) ? ip->i_afp : &ip->i_df; + xfs_extnum_t nextents; /* number of extents in file */ + int new_size; /* size of extents after removal */ + + trace_xfs_iext_remove(ip, idx, state, _RET_IP_); + + ASSERT(ext_diff > 0); + nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); + new_size = (nextents - ext_diff) * sizeof(xfs_bmbt_rec_t); + + if (new_size == 0) { + xfs_iext_destroy(ifp); + } else if (ifp->if_flags & XFS_IFEXTIREC) { + xfs_iext_remove_indirect(ifp, idx, ext_diff); + } else if (ifp->if_real_bytes) { + xfs_iext_remove_direct(ifp, idx, ext_diff); + } else { + xfs_iext_remove_inline(ifp, idx, ext_diff); + } + ifp->if_bytes = new_size; +} + +/* + * This removes ext_diff extents from the inline buffer, beginning + * at extent index idx. + */ +void +xfs_iext_remove_inline( + xfs_ifork_t *ifp, /* inode fork pointer */ + xfs_extnum_t idx, /* index to begin removing exts */ + int ext_diff) /* number of extents to remove */ +{ + int nextents; /* number of extents in file */ + + ASSERT(!(ifp->if_flags & XFS_IFEXTIREC)); + ASSERT(idx < XFS_INLINE_EXTS); + nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); + ASSERT(((nextents - ext_diff) > 0) && + (nextents - ext_diff) < XFS_INLINE_EXTS); + + if (idx + ext_diff < nextents) { + memmove(&ifp->if_u2.if_inline_ext[idx], + &ifp->if_u2.if_inline_ext[idx + ext_diff], + (nextents - (idx + ext_diff)) * + sizeof(xfs_bmbt_rec_t)); + memset(&ifp->if_u2.if_inline_ext[nextents - ext_diff], + 0, ext_diff * sizeof(xfs_bmbt_rec_t)); + } else { + memset(&ifp->if_u2.if_inline_ext[idx], 0, + ext_diff * sizeof(xfs_bmbt_rec_t)); + } +} + +/* + * This removes ext_diff extents from a linear (direct) extent list, + * beginning at extent index idx. If the extents are being removed + * from the end of the list (ie. truncate) then we just need to re- + * allocate the list to remove the extra space. Otherwise, if the + * extents are being removed from the middle of the existing extent + * entries, then we first need to move the extent records beginning + * at idx + ext_diff up in the list to overwrite the records being + * removed, then remove the extra space via kmem_realloc. + */ +void +xfs_iext_remove_direct( + xfs_ifork_t *ifp, /* inode fork pointer */ + xfs_extnum_t idx, /* index to begin removing exts */ + int ext_diff) /* number of extents to remove */ +{ + xfs_extnum_t nextents; /* number of extents in file */ + int new_size; /* size of extents after removal */ + + ASSERT(!(ifp->if_flags & XFS_IFEXTIREC)); + new_size = ifp->if_bytes - + (ext_diff * sizeof(xfs_bmbt_rec_t)); + nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); + + if (new_size == 0) { + xfs_iext_destroy(ifp); + return; + } + /* Move extents up in the list (if needed) */ + if (idx + ext_diff < nextents) { + memmove(&ifp->if_u1.if_extents[idx], + &ifp->if_u1.if_extents[idx + ext_diff], + (nextents - (idx + ext_diff)) * + sizeof(xfs_bmbt_rec_t)); + } + memset(&ifp->if_u1.if_extents[nextents - ext_diff], + 0, ext_diff * sizeof(xfs_bmbt_rec_t)); + /* + * Reallocate the direct extent list. If the extents + * will fit inside the inode then xfs_iext_realloc_direct + * will switch from direct to inline extent allocation + * mode for us. + */ + xfs_iext_realloc_direct(ifp, new_size); + ifp->if_bytes = new_size; +} + +/* + * This is called when incore extents are being removed from the + * indirection array and the extents being removed span multiple extent + * buffers. The idx parameter contains the file extent index where we + * want to begin removing extents, and the count parameter contains + * how many extents need to be removed. + * + * |-------| |-------| + * | nex1 | | | nex1 - number of extents before idx + * |-------| | count | + * | | | | count - number of extents being removed at idx + * | count | |-------| + * | | | nex2 | nex2 - number of extents after idx + count + * |-------| |-------| + */ +void +xfs_iext_remove_indirect( + xfs_ifork_t *ifp, /* inode fork pointer */ + xfs_extnum_t idx, /* index to begin removing extents */ + int count) /* number of extents to remove */ +{ + xfs_ext_irec_t *erp; /* indirection array pointer */ + int erp_idx = 0; /* indirection array index */ + xfs_extnum_t ext_cnt; /* extents left to remove */ + xfs_extnum_t ext_diff; /* extents to remove in current list */ + xfs_extnum_t nex1; /* number of extents before idx */ + xfs_extnum_t nex2; /* extents after idx + count */ + int page_idx = idx; /* index in target extent list */ + + ASSERT(ifp->if_flags & XFS_IFEXTIREC); + erp = xfs_iext_idx_to_irec(ifp, &page_idx, &erp_idx, 0); + ASSERT(erp != NULL); + nex1 = page_idx; + ext_cnt = count; + while (ext_cnt) { + nex2 = MAX((erp->er_extcount - (nex1 + ext_cnt)), 0); + ext_diff = MIN(ext_cnt, (erp->er_extcount - nex1)); + /* + * Check for deletion of entire list; + * xfs_iext_irec_remove() updates extent offsets. + */ + if (ext_diff == erp->er_extcount) { + xfs_iext_irec_remove(ifp, erp_idx); + ext_cnt -= ext_diff; + nex1 = 0; + if (ext_cnt) { + ASSERT(erp_idx < ifp->if_real_bytes / + XFS_IEXT_BUFSZ); + erp = &ifp->if_u1.if_ext_irec[erp_idx]; + nex1 = 0; + continue; + } else { + break; + } + } + /* Move extents up (if needed) */ + if (nex2) { + memmove(&erp->er_extbuf[nex1], + &erp->er_extbuf[nex1 + ext_diff], + nex2 * sizeof(xfs_bmbt_rec_t)); + } + /* Zero out rest of page */ + memset(&erp->er_extbuf[nex1 + nex2], 0, (XFS_IEXT_BUFSZ - + ((nex1 + nex2) * sizeof(xfs_bmbt_rec_t)))); + /* Update remaining counters */ + erp->er_extcount -= ext_diff; + xfs_iext_irec_update_extoffs(ifp, erp_idx + 1, -ext_diff); + ext_cnt -= ext_diff; + nex1 = 0; + erp_idx++; + erp++; + } + ifp->if_bytes -= count * sizeof(xfs_bmbt_rec_t); + xfs_iext_irec_compact(ifp); +} + +/* + * Create, destroy, or resize a linear (direct) block of extents. + */ +void +xfs_iext_realloc_direct( + xfs_ifork_t *ifp, /* inode fork pointer */ + int new_size) /* new size of extents */ +{ + int rnew_size; /* real new size of extents */ + + rnew_size = new_size; + + ASSERT(!(ifp->if_flags & XFS_IFEXTIREC) || + ((new_size >= 0) && (new_size <= XFS_IEXT_BUFSZ) && + (new_size != ifp->if_real_bytes))); + + /* Free extent records */ + if (new_size == 0) { + xfs_iext_destroy(ifp); + } + /* Resize direct extent list and zero any new bytes */ + else if (ifp->if_real_bytes) { + /* Check if extents will fit inside the inode */ + if (new_size <= XFS_INLINE_EXTS * sizeof(xfs_bmbt_rec_t)) { + xfs_iext_direct_to_inline(ifp, new_size / + (uint)sizeof(xfs_bmbt_rec_t)); + ifp->if_bytes = new_size; + return; + } + if (!is_power_of_2(new_size)){ + rnew_size = roundup_pow_of_two(new_size); + } + if (rnew_size != ifp->if_real_bytes) { + ifp->if_u1.if_extents = + kmem_realloc(ifp->if_u1.if_extents, + rnew_size, + ifp->if_real_bytes, KM_NOFS); + } + if (rnew_size > ifp->if_real_bytes) { + memset(&ifp->if_u1.if_extents[ifp->if_bytes / + (uint)sizeof(xfs_bmbt_rec_t)], 0, + rnew_size - ifp->if_real_bytes); + } + } + /* + * Switch from the inline extent buffer to a direct + * extent list. Be sure to include the inline extent + * bytes in new_size. + */ + else { + new_size += ifp->if_bytes; + if (!is_power_of_2(new_size)) { + rnew_size = roundup_pow_of_two(new_size); + } + xfs_iext_inline_to_direct(ifp, rnew_size); + } + ifp->if_real_bytes = rnew_size; + ifp->if_bytes = new_size; +} + +/* + * Switch from linear (direct) extent records to inline buffer. + */ +void +xfs_iext_direct_to_inline( + xfs_ifork_t *ifp, /* inode fork pointer */ + xfs_extnum_t nextents) /* number of extents in file */ +{ + ASSERT(ifp->if_flags & XFS_IFEXTENTS); + ASSERT(nextents <= XFS_INLINE_EXTS); + /* + * The inline buffer was zeroed when we switched + * from inline to direct extent allocation mode, + * so we don't need to clear it here. + */ + memcpy(ifp->if_u2.if_inline_ext, ifp->if_u1.if_extents, + nextents * sizeof(xfs_bmbt_rec_t)); + kmem_free(ifp->if_u1.if_extents); + ifp->if_u1.if_extents = ifp->if_u2.if_inline_ext; + ifp->if_real_bytes = 0; +} + +/* + * Switch from inline buffer to linear (direct) extent records. + * new_size should already be rounded up to the next power of 2 + * by the caller (when appropriate), so use new_size as it is. + * However, since new_size may be rounded up, we can't update + * if_bytes here. It is the caller's responsibility to update + * if_bytes upon return. + */ +void +xfs_iext_inline_to_direct( + xfs_ifork_t *ifp, /* inode fork pointer */ + int new_size) /* number of extents in file */ +{ + ifp->if_u1.if_extents = kmem_alloc(new_size, KM_NOFS); + memset(ifp->if_u1.if_extents, 0, new_size); + if (ifp->if_bytes) { + memcpy(ifp->if_u1.if_extents, ifp->if_u2.if_inline_ext, + ifp->if_bytes); + memset(ifp->if_u2.if_inline_ext, 0, XFS_INLINE_EXTS * + sizeof(xfs_bmbt_rec_t)); + } + ifp->if_real_bytes = new_size; +} + +/* + * Resize an extent indirection array to new_size bytes. + */ +STATIC void +xfs_iext_realloc_indirect( + xfs_ifork_t *ifp, /* inode fork pointer */ + int new_size) /* new indirection array size */ +{ + int nlists; /* number of irec's (ex lists) */ + int size; /* current indirection array size */ + + ASSERT(ifp->if_flags & XFS_IFEXTIREC); + nlists = ifp->if_real_bytes / XFS_IEXT_BUFSZ; + size = nlists * sizeof(xfs_ext_irec_t); + ASSERT(ifp->if_real_bytes); + ASSERT((new_size >= 0) && (new_size != size)); + if (new_size == 0) { + xfs_iext_destroy(ifp); + } else { + ifp->if_u1.if_ext_irec = (xfs_ext_irec_t *) + kmem_realloc(ifp->if_u1.if_ext_irec, + new_size, size, KM_NOFS); + } +} + +/* + * Switch from indirection array to linear (direct) extent allocations. + */ +STATIC void +xfs_iext_indirect_to_direct( + xfs_ifork_t *ifp) /* inode fork pointer */ +{ + xfs_bmbt_rec_host_t *ep; /* extent record pointer */ + xfs_extnum_t nextents; /* number of extents in file */ + int size; /* size of file extents */ + + ASSERT(ifp->if_flags & XFS_IFEXTIREC); + nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); + ASSERT(nextents <= XFS_LINEAR_EXTS); + size = nextents * sizeof(xfs_bmbt_rec_t); + + xfs_iext_irec_compact_pages(ifp); + ASSERT(ifp->if_real_bytes == XFS_IEXT_BUFSZ); + + ep = ifp->if_u1.if_ext_irec->er_extbuf; + kmem_free(ifp->if_u1.if_ext_irec); + ifp->if_flags &= ~XFS_IFEXTIREC; + ifp->if_u1.if_extents = ep; + ifp->if_bytes = size; + if (nextents < XFS_LINEAR_EXTS) { + xfs_iext_realloc_direct(ifp, size); + } +} + +/* + * Free incore file extents. + */ +void +xfs_iext_destroy( + xfs_ifork_t *ifp) /* inode fork pointer */ +{ + if (ifp->if_flags & XFS_IFEXTIREC) { + int erp_idx; + int nlists; + + nlists = ifp->if_real_bytes / XFS_IEXT_BUFSZ; + for (erp_idx = nlists - 1; erp_idx >= 0 ; erp_idx--) { + xfs_iext_irec_remove(ifp, erp_idx); + } + ifp->if_flags &= ~XFS_IFEXTIREC; + } else if (ifp->if_real_bytes) { + kmem_free(ifp->if_u1.if_extents); + } else if (ifp->if_bytes) { + memset(ifp->if_u2.if_inline_ext, 0, XFS_INLINE_EXTS * + sizeof(xfs_bmbt_rec_t)); + } + ifp->if_u1.if_extents = NULL; + ifp->if_real_bytes = 0; + ifp->if_bytes = 0; +} + +/* + * Return a pointer to the extent record for file system block bno. + */ +xfs_bmbt_rec_host_t * /* pointer to found extent record */ +xfs_iext_bno_to_ext( + xfs_ifork_t *ifp, /* inode fork pointer */ + xfs_fileoff_t bno, /* block number to search for */ + xfs_extnum_t *idxp) /* index of target extent */ +{ + xfs_bmbt_rec_host_t *base; /* pointer to first extent */ + xfs_filblks_t blockcount = 0; /* number of blocks in extent */ + xfs_bmbt_rec_host_t *ep = NULL; /* pointer to target extent */ + xfs_ext_irec_t *erp = NULL; /* indirection array pointer */ + int high; /* upper boundary in search */ + xfs_extnum_t idx = 0; /* index of target extent */ + int low; /* lower boundary in search */ + xfs_extnum_t nextents; /* number of file extents */ + xfs_fileoff_t startoff = 0; /* start offset of extent */ + + nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); + if (nextents == 0) { + *idxp = 0; + return NULL; + } + low = 0; + if (ifp->if_flags & XFS_IFEXTIREC) { + /* Find target extent list */ + int erp_idx = 0; + erp = xfs_iext_bno_to_irec(ifp, bno, &erp_idx); + base = erp->er_extbuf; + high = erp->er_extcount - 1; + } else { + base = ifp->if_u1.if_extents; + high = nextents - 1; + } + /* Binary search extent records */ + while (low <= high) { + idx = (low + high) >> 1; + ep = base + idx; + startoff = xfs_bmbt_get_startoff(ep); + blockcount = xfs_bmbt_get_blockcount(ep); + if (bno < startoff) { + high = idx - 1; + } else if (bno >= startoff + blockcount) { + low = idx + 1; + } else { + /* Convert back to file-based extent index */ + if (ifp->if_flags & XFS_IFEXTIREC) { + idx += erp->er_extoff; + } + *idxp = idx; + return ep; + } + } + /* Convert back to file-based extent index */ + if (ifp->if_flags & XFS_IFEXTIREC) { + idx += erp->er_extoff; + } + if (bno >= startoff + blockcount) { + if (++idx == nextents) { + ep = NULL; + } else { + ep = xfs_iext_get_ext(ifp, idx); + } + } + *idxp = idx; + return ep; +} + +/* + * Return a pointer to the indirection array entry containing the + * extent record for filesystem block bno. Store the index of the + * target irec in *erp_idxp. + */ +xfs_ext_irec_t * /* pointer to found extent record */ +xfs_iext_bno_to_irec( + xfs_ifork_t *ifp, /* inode fork pointer */ + xfs_fileoff_t bno, /* block number to search for */ + int *erp_idxp) /* irec index of target ext list */ +{ + xfs_ext_irec_t *erp = NULL; /* indirection array pointer */ + xfs_ext_irec_t *erp_next; /* next indirection array entry */ + int erp_idx; /* indirection array index */ + int nlists; /* number of extent irec's (lists) */ + int high; /* binary search upper limit */ + int low; /* binary search lower limit */ + + ASSERT(ifp->if_flags & XFS_IFEXTIREC); + nlists = ifp->if_real_bytes / XFS_IEXT_BUFSZ; + erp_idx = 0; + low = 0; + high = nlists - 1; + while (low <= high) { + erp_idx = (low + high) >> 1; + erp = &ifp->if_u1.if_ext_irec[erp_idx]; + erp_next = erp_idx < nlists - 1 ? erp + 1 : NULL; + if (bno < xfs_bmbt_get_startoff(erp->er_extbuf)) { + high = erp_idx - 1; + } else if (erp_next && bno >= + xfs_bmbt_get_startoff(erp_next->er_extbuf)) { + low = erp_idx + 1; + } else { + break; + } + } + *erp_idxp = erp_idx; + return erp; +} + +/* + * Return a pointer to the indirection array entry containing the + * extent record at file extent index *idxp. Store the index of the + * target irec in *erp_idxp and store the page index of the target + * extent record in *idxp. + */ +xfs_ext_irec_t * +xfs_iext_idx_to_irec( + xfs_ifork_t *ifp, /* inode fork pointer */ + xfs_extnum_t *idxp, /* extent index (file -> page) */ + int *erp_idxp, /* pointer to target irec */ + int realloc) /* new bytes were just added */ +{ + xfs_ext_irec_t *prev; /* pointer to previous irec */ + xfs_ext_irec_t *erp = NULL; /* pointer to current irec */ + int erp_idx; /* indirection array index */ + int nlists; /* number of irec's (ex lists) */ + int high; /* binary search upper limit */ + int low; /* binary search lower limit */ + xfs_extnum_t page_idx = *idxp; /* extent index in target list */ + + ASSERT(ifp->if_flags & XFS_IFEXTIREC); + ASSERT(page_idx >= 0); + ASSERT(page_idx <= ifp->if_bytes / sizeof(xfs_bmbt_rec_t)); + ASSERT(page_idx < ifp->if_bytes / sizeof(xfs_bmbt_rec_t) || realloc); + + nlists = ifp->if_real_bytes / XFS_IEXT_BUFSZ; + erp_idx = 0; + low = 0; + high = nlists - 1; + + /* Binary search extent irec's */ + while (low <= high) { + erp_idx = (low + high) >> 1; + erp = &ifp->if_u1.if_ext_irec[erp_idx]; + prev = erp_idx > 0 ? erp - 1 : NULL; + if (page_idx < erp->er_extoff || (page_idx == erp->er_extoff && + realloc && prev && prev->er_extcount < XFS_LINEAR_EXTS)) { + high = erp_idx - 1; + } else if (page_idx > erp->er_extoff + erp->er_extcount || + (page_idx == erp->er_extoff + erp->er_extcount && + !realloc)) { + low = erp_idx + 1; + } else if (page_idx == erp->er_extoff + erp->er_extcount && + erp->er_extcount == XFS_LINEAR_EXTS) { + ASSERT(realloc); + page_idx = 0; + erp_idx++; + erp = erp_idx < nlists ? erp + 1 : NULL; + break; + } else { + page_idx -= erp->er_extoff; + break; + } + } + *idxp = page_idx; + *erp_idxp = erp_idx; + return(erp); +} + +/* + * Allocate and initialize an indirection array once the space needed + * for incore extents increases above XFS_IEXT_BUFSZ. + */ +void +xfs_iext_irec_init( + xfs_ifork_t *ifp) /* inode fork pointer */ +{ + xfs_ext_irec_t *erp; /* indirection array pointer */ + xfs_extnum_t nextents; /* number of extents in file */ + + ASSERT(!(ifp->if_flags & XFS_IFEXTIREC)); + nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); + ASSERT(nextents <= XFS_LINEAR_EXTS); + + erp = kmem_alloc(sizeof(xfs_ext_irec_t), KM_NOFS); + + if (nextents == 0) { + ifp->if_u1.if_extents = kmem_alloc(XFS_IEXT_BUFSZ, KM_NOFS); + } else if (!ifp->if_real_bytes) { + xfs_iext_inline_to_direct(ifp, XFS_IEXT_BUFSZ); + } else if (ifp->if_real_bytes < XFS_IEXT_BUFSZ) { + xfs_iext_realloc_direct(ifp, XFS_IEXT_BUFSZ); + } + erp->er_extbuf = ifp->if_u1.if_extents; + erp->er_extcount = nextents; + erp->er_extoff = 0; + + ifp->if_flags |= XFS_IFEXTIREC; + ifp->if_real_bytes = XFS_IEXT_BUFSZ; + ifp->if_bytes = nextents * sizeof(xfs_bmbt_rec_t); + ifp->if_u1.if_ext_irec = erp; + + return; +} + +/* + * Allocate and initialize a new entry in the indirection array. + */ +xfs_ext_irec_t * +xfs_iext_irec_new( + xfs_ifork_t *ifp, /* inode fork pointer */ + int erp_idx) /* index for new irec */ +{ + xfs_ext_irec_t *erp; /* indirection array pointer */ + int i; /* loop counter */ + int nlists; /* number of irec's (ex lists) */ + + ASSERT(ifp->if_flags & XFS_IFEXTIREC); + nlists = ifp->if_real_bytes / XFS_IEXT_BUFSZ; + + /* Resize indirection array */ + xfs_iext_realloc_indirect(ifp, ++nlists * + sizeof(xfs_ext_irec_t)); + /* + * Move records down in the array so the + * new page can use erp_idx. + */ + erp = ifp->if_u1.if_ext_irec; + for (i = nlists - 1; i > erp_idx; i--) { + memmove(&erp[i], &erp[i-1], sizeof(xfs_ext_irec_t)); + } + ASSERT(i == erp_idx); + + /* Initialize new extent record */ + erp = ifp->if_u1.if_ext_irec; + erp[erp_idx].er_extbuf = kmem_alloc(XFS_IEXT_BUFSZ, KM_NOFS); + ifp->if_real_bytes = nlists * XFS_IEXT_BUFSZ; + memset(erp[erp_idx].er_extbuf, 0, XFS_IEXT_BUFSZ); + erp[erp_idx].er_extcount = 0; + erp[erp_idx].er_extoff = erp_idx > 0 ? + erp[erp_idx-1].er_extoff + erp[erp_idx-1].er_extcount : 0; + return (&erp[erp_idx]); +} + +/* + * Remove a record from the indirection array. + */ +void +xfs_iext_irec_remove( + xfs_ifork_t *ifp, /* inode fork pointer */ + int erp_idx) /* irec index to remove */ +{ + xfs_ext_irec_t *erp; /* indirection array pointer */ + int i; /* loop counter */ + int nlists; /* number of irec's (ex lists) */ + + ASSERT(ifp->if_flags & XFS_IFEXTIREC); + nlists = ifp->if_real_bytes / XFS_IEXT_BUFSZ; + erp = &ifp->if_u1.if_ext_irec[erp_idx]; + if (erp->er_extbuf) { + xfs_iext_irec_update_extoffs(ifp, erp_idx + 1, + -erp->er_extcount); + kmem_free(erp->er_extbuf); + } + /* Compact extent records */ + erp = ifp->if_u1.if_ext_irec; + for (i = erp_idx; i < nlists - 1; i++) { + memmove(&erp[i], &erp[i+1], sizeof(xfs_ext_irec_t)); + } + /* + * Manually free the last extent record from the indirection + * array. A call to xfs_iext_realloc_indirect() with a size + * of zero would result in a call to xfs_iext_destroy() which + * would in turn call this function again, creating a nasty + * infinite loop. + */ + if (--nlists) { + xfs_iext_realloc_indirect(ifp, + nlists * sizeof(xfs_ext_irec_t)); + } else { + kmem_free(ifp->if_u1.if_ext_irec); + } + ifp->if_real_bytes = nlists * XFS_IEXT_BUFSZ; +} + +/* + * This is called to clean up large amounts of unused memory allocated + * by the indirection array. Before compacting anything though, verify + * that the indirection array is still needed and switch back to the + * linear extent list (or even the inline buffer) if possible. The + * compaction policy is as follows: + * + * Full Compaction: Extents fit into a single page (or inline buffer) + * Partial Compaction: Extents occupy less than 50% of allocated space + * No Compaction: Extents occupy at least 50% of allocated space + */ +void +xfs_iext_irec_compact( + xfs_ifork_t *ifp) /* inode fork pointer */ +{ + xfs_extnum_t nextents; /* number of extents in file */ + int nlists; /* number of irec's (ex lists) */ + + ASSERT(ifp->if_flags & XFS_IFEXTIREC); + nlists = ifp->if_real_bytes / XFS_IEXT_BUFSZ; + nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); + + if (nextents == 0) { + xfs_iext_destroy(ifp); + } else if (nextents <= XFS_INLINE_EXTS) { + xfs_iext_indirect_to_direct(ifp); + xfs_iext_direct_to_inline(ifp, nextents); + } else if (nextents <= XFS_LINEAR_EXTS) { + xfs_iext_indirect_to_direct(ifp); + } else if (nextents < (nlists * XFS_LINEAR_EXTS) >> 1) { + xfs_iext_irec_compact_pages(ifp); + } +} + +/* + * Combine extents from neighboring extent pages. + */ +void +xfs_iext_irec_compact_pages( + xfs_ifork_t *ifp) /* inode fork pointer */ +{ + xfs_ext_irec_t *erp, *erp_next;/* pointers to irec entries */ + int erp_idx = 0; /* indirection array index */ + int nlists; /* number of irec's (ex lists) */ + + ASSERT(ifp->if_flags & XFS_IFEXTIREC); + nlists = ifp->if_real_bytes / XFS_IEXT_BUFSZ; + while (erp_idx < nlists - 1) { + erp = &ifp->if_u1.if_ext_irec[erp_idx]; + erp_next = erp + 1; + if (erp_next->er_extcount <= + (XFS_LINEAR_EXTS - erp->er_extcount)) { + memcpy(&erp->er_extbuf[erp->er_extcount], + erp_next->er_extbuf, erp_next->er_extcount * + sizeof(xfs_bmbt_rec_t)); + erp->er_extcount += erp_next->er_extcount; + /* + * Free page before removing extent record + * so er_extoffs don't get modified in + * xfs_iext_irec_remove. + */ + kmem_free(erp_next->er_extbuf); + erp_next->er_extbuf = NULL; + xfs_iext_irec_remove(ifp, erp_idx + 1); + nlists = ifp->if_real_bytes / XFS_IEXT_BUFSZ; + } else { + erp_idx++; + } + } +} + +/* + * This is called to update the er_extoff field in the indirection + * array when extents have been added or removed from one of the + * extent lists. erp_idx contains the irec index to begin updating + * at and ext_diff contains the number of extents that were added + * or removed. + */ +void +xfs_iext_irec_update_extoffs( + xfs_ifork_t *ifp, /* inode fork pointer */ + int erp_idx, /* irec index to update */ + int ext_diff) /* number of new extents */ +{ + int i; /* loop counter */ + int nlists; /* number of irec's (ex lists */ + + ASSERT(ifp->if_flags & XFS_IFEXTIREC); + nlists = ifp->if_real_bytes / XFS_IEXT_BUFSZ; + for (i = erp_idx; i < nlists; i++) { + ifp->if_u1.if_ext_irec[i].er_extoff += ext_diff; + } +} diff --git a/fs/xfs/xfs_inode_fork.h b/fs/xfs/xfs_inode_fork.h new file mode 100644 index 0000000..28661a0 --- /dev/null +++ b/fs/xfs/xfs_inode_fork.h @@ -0,0 +1,171 @@ +/* + * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#ifndef __XFS_INODE_FORK_H__ +#define __XFS_INODE_FORK_H__ + +struct xfs_inode_log_item; + +/* + * The following xfs_ext_irec_t struct introduces a second (top) level + * to the in-core extent allocation scheme. These structs are allocated + * in a contiguous block, creating an indirection array where each entry + * (irec) contains a pointer to a buffer of in-core extent records which + * it manages. Each extent buffer is 4k in size, since 4k is the system + * page size on Linux i386 and systems with larger page sizes don't seem + * to gain much, if anything, by using their native page size as the + * extent buffer size. Also, using 4k extent buffers everywhere provides + * a consistent interface for CXFS across different platforms. + * + * There is currently no limit on the number of irec's (extent lists) + * allowed, so heavily fragmented files may require an indirection array + * which spans multiple system pages of memory. The number of extents + * which would require this amount of contiguous memory is very large + * and should not cause problems in the foreseeable future. However, + * if the memory needed for the contiguous array ever becomes a problem, + * it is possible that a third level of indirection may be required. + */ +typedef struct xfs_ext_irec { + xfs_bmbt_rec_host_t *er_extbuf; /* block of extent records */ + xfs_extnum_t er_extoff; /* extent offset in file */ + xfs_extnum_t er_extcount; /* number of extents in page/block */ +} xfs_ext_irec_t; + +/* + * File incore extent information, present for each of data & attr forks. + */ +#define XFS_IEXT_BUFSZ 4096 +#define XFS_LINEAR_EXTS (XFS_IEXT_BUFSZ / (uint)sizeof(xfs_bmbt_rec_t)) +#define XFS_INLINE_EXTS 2 +#define XFS_INLINE_DATA 32 +typedef struct xfs_ifork { + int if_bytes; /* bytes in if_u1 */ + int if_real_bytes; /* bytes allocated in if_u1 */ + struct xfs_btree_block *if_broot; /* file's incore btree root */ + short if_broot_bytes; /* bytes allocated for root */ + unsigned char if_flags; /* per-fork flags */ + union { + xfs_bmbt_rec_host_t *if_extents;/* linear map file exts */ + xfs_ext_irec_t *if_ext_irec; /* irec map file exts */ + char *if_data; /* inline file data */ + } if_u1; + union { + xfs_bmbt_rec_host_t if_inline_ext[XFS_INLINE_EXTS]; + /* very small file extents */ + char if_inline_data[XFS_INLINE_DATA]; + /* very small file data */ + xfs_dev_t if_rdev; /* dev number if special */ + uuid_t if_uuid; /* mount point value */ + } if_u2; +} xfs_ifork_t; + +/* + * Per-fork incore inode flags. + */ +#define XFS_IFINLINE 0x01 /* Inline data is read in */ +#define XFS_IFEXTENTS 0x02 /* All extent pointers are read in */ +#define XFS_IFBROOT 0x04 /* i_broot points to the bmap b-tree root */ +#define XFS_IFEXTIREC 0x08 /* Indirection array of extent blocks */ + +/* + * Fork handling. + */ + +#define XFS_IFORK_Q(ip) ((ip)->i_d.di_forkoff != 0) +#define XFS_IFORK_BOFF(ip) ((int)((ip)->i_d.di_forkoff << 3)) + +#define XFS_IFORK_PTR(ip,w) \ + ((w) == XFS_DATA_FORK ? \ + &(ip)->i_df : \ + (ip)->i_afp) +#define XFS_IFORK_DSIZE(ip) \ + (XFS_IFORK_Q(ip) ? \ + XFS_IFORK_BOFF(ip) : \ + XFS_LITINO((ip)->i_mount, (ip)->i_d.di_version)) +#define XFS_IFORK_ASIZE(ip) \ + (XFS_IFORK_Q(ip) ? \ + XFS_LITINO((ip)->i_mount, (ip)->i_d.di_version) - \ + XFS_IFORK_BOFF(ip) : \ + 0) +#define XFS_IFORK_SIZE(ip,w) \ + ((w) == XFS_DATA_FORK ? \ + XFS_IFORK_DSIZE(ip) : \ + XFS_IFORK_ASIZE(ip)) +#define XFS_IFORK_FORMAT(ip,w) \ + ((w) == XFS_DATA_FORK ? \ + (ip)->i_d.di_format : \ + (ip)->i_d.di_aformat) +#define XFS_IFORK_FMT_SET(ip,w,n) \ + ((w) == XFS_DATA_FORK ? \ + ((ip)->i_d.di_format = (n)) : \ + ((ip)->i_d.di_aformat = (n))) +#define XFS_IFORK_NEXTENTS(ip,w) \ + ((w) == XFS_DATA_FORK ? \ + (ip)->i_d.di_nextents : \ + (ip)->i_d.di_anextents) +#define XFS_IFORK_NEXT_SET(ip,w,n) \ + ((w) == XFS_DATA_FORK ? \ + ((ip)->i_d.di_nextents = (n)) : \ + ((ip)->i_d.di_anextents = (n))) +#define XFS_IFORK_MAXEXT(ip, w) \ + (XFS_IFORK_SIZE(ip, w) / sizeof(xfs_bmbt_rec_t)) + +int xfs_iformat_fork(struct xfs_inode *, struct xfs_dinode *); +void xfs_iflush_fork(struct xfs_inode *, struct xfs_dinode *, + struct xfs_inode_log_item *, int, + struct xfs_buf *); +void xfs_idestroy_fork(struct xfs_inode *, int); +void xfs_idata_realloc(struct xfs_inode *, int, int); +void xfs_iroot_realloc(struct xfs_inode *, int, int); +int xfs_iread_extents(struct xfs_trans *, struct xfs_inode *, int); +int xfs_iextents_copy(struct xfs_inode *, struct xfs_bmbt_rec *, + int); + +struct xfs_bmbt_rec_host * + xfs_iext_get_ext(struct xfs_ifork *, xfs_extnum_t); +void xfs_iext_insert(struct xfs_inode *, xfs_extnum_t, xfs_extnum_t, + struct xfs_bmbt_irec *, int); +void xfs_iext_add(struct xfs_ifork *, xfs_extnum_t, int); +void xfs_iext_add_indirect_multi(struct xfs_ifork *, int, + xfs_extnum_t, int); +void xfs_iext_remove(struct xfs_inode *, xfs_extnum_t, int, int); +void xfs_iext_remove_inline(struct xfs_ifork *, xfs_extnum_t, int); +void xfs_iext_remove_direct(struct xfs_ifork *, xfs_extnum_t, int); +void xfs_iext_remove_indirect(struct xfs_ifork *, xfs_extnum_t, int); +void xfs_iext_realloc_direct(struct xfs_ifork *, int); +void xfs_iext_direct_to_inline(struct xfs_ifork *, xfs_extnum_t); +void xfs_iext_inline_to_direct(struct xfs_ifork *, int); +void xfs_iext_destroy(struct xfs_ifork *); +struct xfs_bmbt_rec_host * + xfs_iext_bno_to_ext(struct xfs_ifork *, xfs_fileoff_t, int *); +struct xfs_ext_irec * + xfs_iext_bno_to_irec(struct xfs_ifork *, xfs_fileoff_t, int *); +struct xfs_ext_irec * + xfs_iext_idx_to_irec(struct xfs_ifork *, xfs_extnum_t *, int *, + int); +void xfs_iext_irec_init(struct xfs_ifork *); +struct xfs_ext_irec * + xfs_iext_irec_new(struct xfs_ifork *, int); +void xfs_iext_irec_remove(struct xfs_ifork *, int); +void xfs_iext_irec_compact(struct xfs_ifork *); +void xfs_iext_irec_compact_pages(struct xfs_ifork *); +void xfs_iext_irec_compact_full(struct xfs_ifork *); +void xfs_iext_irec_update_extoffs(struct xfs_ifork *, int, int); + +extern struct kmem_zone *xfs_ifork_zone; + +#endif /* __XFS_INODE_FORK_H__ */ diff --git a/fs/xfs/xfs_inode_item.c b/fs/xfs/xfs_inode_item.c index f76ff52..3780811 100644 --- a/fs/xfs/xfs_inode_item.c +++ b/fs/xfs/xfs_inode_item.c @@ -47,32 +47,44 @@ static inline struct xfs_inode_log_item *INODE_ITEM(struct xfs_log_item *lip) * inode core, and possibly one for the inode data/extents/b-tree root * and one for the inode attribute data/extents/b-tree root. */ -STATIC uint +STATIC void xfs_inode_item_size( - struct xfs_log_item *lip) + struct xfs_log_item *lip, + int *nvecs, + int *nbytes) { struct xfs_inode_log_item *iip = INODE_ITEM(lip); struct xfs_inode *ip = iip->ili_inode; - uint nvecs = 2; + + *nvecs += 2; + *nbytes += sizeof(struct xfs_inode_log_format) + + xfs_icdinode_size(ip->i_d.di_version); switch (ip->i_d.di_format) { case XFS_DINODE_FMT_EXTENTS: if ((iip->ili_fields & XFS_ILOG_DEXT) && ip->i_d.di_nextents > 0 && - ip->i_df.if_bytes > 0) - nvecs++; + ip->i_df.if_bytes > 0) { + /* worst case, doesn't subtract delalloc extents */ + *nbytes += XFS_IFORK_DSIZE(ip); + *nvecs += 1; + } break; case XFS_DINODE_FMT_BTREE: if ((iip->ili_fields & XFS_ILOG_DBROOT) && - ip->i_df.if_broot_bytes > 0) - nvecs++; + ip->i_df.if_broot_bytes > 0) { + *nbytes += ip->i_df.if_broot_bytes; + *nvecs += 1; + } break; case XFS_DINODE_FMT_LOCAL: if ((iip->ili_fields & XFS_ILOG_DDATA) && - ip->i_df.if_bytes > 0) - nvecs++; + ip->i_df.if_bytes > 0) { + *nbytes += roundup(ip->i_df.if_bytes, 4); + *nvecs += 1; + } break; case XFS_DINODE_FMT_DEV: @@ -85,7 +97,7 @@ xfs_inode_item_size( } if (!XFS_IFORK_Q(ip)) - return nvecs; + return; /* @@ -95,28 +107,33 @@ xfs_inode_item_size( case XFS_DINODE_FMT_EXTENTS: if ((iip->ili_fields & XFS_ILOG_AEXT) && ip->i_d.di_anextents > 0 && - ip->i_afp->if_bytes > 0) - nvecs++; + ip->i_afp->if_bytes > 0) { + /* worst case, doesn't subtract unused space */ + *nbytes += XFS_IFORK_ASIZE(ip); + *nvecs += 1; + } break; case XFS_DINODE_FMT_BTREE: if ((iip->ili_fields & XFS_ILOG_ABROOT) && - ip->i_afp->if_broot_bytes > 0) - nvecs++; + ip->i_afp->if_broot_bytes > 0) { + *nbytes += ip->i_afp->if_broot_bytes; + *nvecs += 1; + } break; case XFS_DINODE_FMT_LOCAL: if ((iip->ili_fields & XFS_ILOG_ADATA) && - ip->i_afp->if_bytes > 0) - nvecs++; + ip->i_afp->if_bytes > 0) { + *nbytes += roundup(ip->i_afp->if_bytes, 4); + *nvecs += 1; + } break; default: ASSERT(0); break; } - - return nvecs; } /* diff --git a/fs/xfs/xfs_inode_item.h b/fs/xfs/xfs_inode_item.h index 779812f..dce4d65 100644 --- a/fs/xfs/xfs_inode_item.h +++ b/fs/xfs/xfs_inode_item.h @@ -18,123 +18,13 @@ #ifndef __XFS_INODE_ITEM_H__ #define __XFS_INODE_ITEM_H__ -/* - * This is the structure used to lay out an inode log item in the - * log. The size of the inline data/extents/b-tree root to be logged - * (if any) is indicated in the ilf_dsize field. Changes to this structure - * must be added on to the end. - */ -typedef struct xfs_inode_log_format { - __uint16_t ilf_type; /* inode log item type */ - __uint16_t ilf_size; /* size of this item */ - __uint32_t ilf_fields; /* flags for fields logged */ - __uint16_t ilf_asize; /* size of attr d/ext/root */ - __uint16_t ilf_dsize; /* size of data/ext/root */ - __uint64_t ilf_ino; /* inode number */ - union { - __uint32_t ilfu_rdev; /* rdev value for dev inode*/ - uuid_t ilfu_uuid; /* mount point value */ - } ilf_u; - __int64_t ilf_blkno; /* blkno of inode buffer */ - __int32_t ilf_len; /* len of inode buffer */ - __int32_t ilf_boffset; /* off of inode in buffer */ -} xfs_inode_log_format_t; - -typedef struct xfs_inode_log_format_32 { - __uint16_t ilf_type; /* inode log item type */ - __uint16_t ilf_size; /* size of this item */ - __uint32_t ilf_fields; /* flags for fields logged */ - __uint16_t ilf_asize; /* size of attr d/ext/root */ - __uint16_t ilf_dsize; /* size of data/ext/root */ - __uint64_t ilf_ino; /* inode number */ - union { - __uint32_t ilfu_rdev; /* rdev value for dev inode*/ - uuid_t ilfu_uuid; /* mount point value */ - } ilf_u; - __int64_t ilf_blkno; /* blkno of inode buffer */ - __int32_t ilf_len; /* len of inode buffer */ - __int32_t ilf_boffset; /* off of inode in buffer */ -} __attribute__((packed)) xfs_inode_log_format_32_t; - -typedef struct xfs_inode_log_format_64 { - __uint16_t ilf_type; /* inode log item type */ - __uint16_t ilf_size; /* size of this item */ - __uint32_t ilf_fields; /* flags for fields logged */ - __uint16_t ilf_asize; /* size of attr d/ext/root */ - __uint16_t ilf_dsize; /* size of data/ext/root */ - __uint32_t ilf_pad; /* pad for 64 bit boundary */ - __uint64_t ilf_ino; /* inode number */ - union { - __uint32_t ilfu_rdev; /* rdev value for dev inode*/ - uuid_t ilfu_uuid; /* mount point value */ - } ilf_u; - __int64_t ilf_blkno; /* blkno of inode buffer */ - __int32_t ilf_len; /* len of inode buffer */ - __int32_t ilf_boffset; /* off of inode in buffer */ -} xfs_inode_log_format_64_t; - -/* - * Flags for xfs_trans_log_inode flags field. - */ -#define XFS_ILOG_CORE 0x001 /* log standard inode fields */ -#define XFS_ILOG_DDATA 0x002 /* log i_df.if_data */ -#define XFS_ILOG_DEXT 0x004 /* log i_df.if_extents */ -#define XFS_ILOG_DBROOT 0x008 /* log i_df.i_broot */ -#define XFS_ILOG_DEV 0x010 /* log the dev field */ -#define XFS_ILOG_UUID 0x020 /* log the uuid field */ -#define XFS_ILOG_ADATA 0x040 /* log i_af.if_data */ -#define XFS_ILOG_AEXT 0x080 /* log i_af.if_extents */ -#define XFS_ILOG_ABROOT 0x100 /* log i_af.i_broot */ - - -/* - * The timestamps are dirty, but not necessarily anything else in the inode - * core. Unlike the other fields above this one must never make it to disk - * in the ilf_fields of the inode_log_format, but is purely store in-memory in - * ili_fields in the inode_log_item. - */ -#define XFS_ILOG_TIMESTAMP 0x4000 - -#define XFS_ILOG_NONCORE (XFS_ILOG_DDATA | XFS_ILOG_DEXT | \ - XFS_ILOG_DBROOT | XFS_ILOG_DEV | \ - XFS_ILOG_UUID | XFS_ILOG_ADATA | \ - XFS_ILOG_AEXT | XFS_ILOG_ABROOT) - -#define XFS_ILOG_DFORK (XFS_ILOG_DDATA | XFS_ILOG_DEXT | \ - XFS_ILOG_DBROOT) - -#define XFS_ILOG_AFORK (XFS_ILOG_ADATA | XFS_ILOG_AEXT | \ - XFS_ILOG_ABROOT) - -#define XFS_ILOG_ALL (XFS_ILOG_CORE | XFS_ILOG_DDATA | \ - XFS_ILOG_DEXT | XFS_ILOG_DBROOT | \ - XFS_ILOG_DEV | XFS_ILOG_UUID | \ - XFS_ILOG_ADATA | XFS_ILOG_AEXT | \ - XFS_ILOG_ABROOT | XFS_ILOG_TIMESTAMP) - -static inline int xfs_ilog_fbroot(int w) -{ - return (w == XFS_DATA_FORK ? XFS_ILOG_DBROOT : XFS_ILOG_ABROOT); -} - -static inline int xfs_ilog_fext(int w) -{ - return (w == XFS_DATA_FORK ? XFS_ILOG_DEXT : XFS_ILOG_AEXT); -} - -static inline int xfs_ilog_fdata(int w) -{ - return (w == XFS_DATA_FORK ? XFS_ILOG_DDATA : XFS_ILOG_ADATA); -} - -#ifdef __KERNEL__ +/* kernel only definitions */ struct xfs_buf; struct xfs_bmbt_rec; struct xfs_inode; struct xfs_mount; - typedef struct xfs_inode_log_item { xfs_log_item_t ili_item; /* common portion */ struct xfs_inode *ili_inode; /* inode ptr */ @@ -151,7 +41,6 @@ typedef struct xfs_inode_log_item { xfs_inode_log_format_t ili_format; /* logged structure */ } xfs_inode_log_item_t; - static inline int xfs_inode_clean(xfs_inode_t *ip) { return !ip->i_itemp || !(ip->i_itemp->ili_fields & XFS_ILOG_ALL); @@ -165,6 +54,6 @@ extern void xfs_iflush_abort(struct xfs_inode *, bool); extern int xfs_inode_item_format_convert(xfs_log_iovec_t *, xfs_inode_log_format_t *); -#endif /* __KERNEL__ */ +extern struct kmem_zone *xfs_ili_zone; #endif /* __XFS_INODE_ITEM_H__ */ diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c index 6e2bca5d..bdebc21 100644 --- a/fs/xfs/xfs_ioctl.c +++ b/fs/xfs/xfs_ioctl.c @@ -17,6 +17,7 @@ */ #include "xfs.h" #include "xfs_fs.h" +#include "xfs_format.h" #include "xfs_log.h" #include "xfs_trans.h" #include "xfs_sb.h" @@ -32,17 +33,16 @@ #include "xfs_error.h" #include "xfs_attr.h" #include "xfs_bmap.h" +#include "xfs_bmap_util.h" #include "xfs_buf_item.h" -#include "xfs_utils.h" -#include "xfs_dfrag.h" #include "xfs_fsops.h" -#include "xfs_vnodeops.h" #include "xfs_discard.h" #include "xfs_quota.h" #include "xfs_inode_item.h" #include "xfs_export.h" #include "xfs_trace.h" #include "xfs_icache.h" +#include "xfs_symlink.h" #include <linux/capability.h> #include <linux/dcache.h> @@ -350,6 +350,40 @@ xfs_readlink_by_handle( return error; } +int +xfs_set_dmattrs( + xfs_inode_t *ip, + u_int evmask, + u_int16_t state) +{ + xfs_mount_t *mp = ip->i_mount; + xfs_trans_t *tp; + int error; + + if (!capable(CAP_SYS_ADMIN)) + return XFS_ERROR(EPERM); + + if (XFS_FORCED_SHUTDOWN(mp)) + return XFS_ERROR(EIO); + + tp = xfs_trans_alloc(mp, XFS_TRANS_SET_DMATTRS); + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_ichange, 0, 0); + if (error) { + xfs_trans_cancel(tp, 0); + return error; + } + xfs_ilock(ip, XFS_ILOCK_EXCL); + xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); + + ip->i_d.di_dmevmask = evmask; + ip->i_d.di_dmstate = state; + + xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); + error = xfs_trans_commit(tp, 0); + + return error; +} + STATIC int xfs_fssetdm_by_handle( struct file *parfilp, @@ -967,7 +1001,7 @@ xfs_ioctl_setattr( * first do an error checking pass. */ tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE); - code = xfs_trans_reserve(tp, 0, XFS_ICHANGE_LOG_RES(mp), 0, 0, 0); + code = xfs_trans_reserve(tp, &M_RES(mp)->tr_ichange, 0, 0); if (code) goto error_return; @@ -981,15 +1015,22 @@ xfs_ioctl_setattr( * to the file owner ID, except in cases where the * CAP_FSETID capability is applicable. */ - if (current_fsuid() != ip->i_d.di_uid && !capable(CAP_FOWNER)) { + if (!inode_owner_or_capable(VFS_I(ip))) { code = XFS_ERROR(EPERM); goto error_return; } /* * Do a quota reservation only if projid is actually going to change. + * Only allow changing of projid from init_user_ns since it is a + * non user namespace aware identifier. */ if (mask & FSX_PROJID) { + if (current_user_ns() != &init_user_ns) { + code = XFS_ERROR(EINVAL); + goto error_return; + } + if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp) && xfs_get_projid(ip) != fa->fsx_projid) { @@ -1103,7 +1144,7 @@ xfs_ioctl_setattr( * cleared upon successful return from chown() */ if ((ip->i_d.di_mode & (S_ISUID|S_ISGID)) && - !capable(CAP_FSETID)) + !inode_capable(VFS_I(ip), CAP_FSETID)) ip->i_d.di_mode &= ~(S_ISUID|S_ISGID); /* @@ -1328,6 +1369,75 @@ xfs_ioc_getbmapx( return 0; } +int +xfs_ioc_swapext( + xfs_swapext_t *sxp) +{ + xfs_inode_t *ip, *tip; + struct fd f, tmp; + int error = 0; + + /* Pull information for the target fd */ + f = fdget((int)sxp->sx_fdtarget); + if (!f.file) { + error = XFS_ERROR(EINVAL); + goto out; + } + + if (!(f.file->f_mode & FMODE_WRITE) || + !(f.file->f_mode & FMODE_READ) || + (f.file->f_flags & O_APPEND)) { + error = XFS_ERROR(EBADF); + goto out_put_file; + } + + tmp = fdget((int)sxp->sx_fdtmp); + if (!tmp.file) { + error = XFS_ERROR(EINVAL); + goto out_put_file; + } + + if (!(tmp.file->f_mode & FMODE_WRITE) || + !(tmp.file->f_mode & FMODE_READ) || + (tmp.file->f_flags & O_APPEND)) { + error = XFS_ERROR(EBADF); + goto out_put_tmp_file; + } + + if (IS_SWAPFILE(file_inode(f.file)) || + IS_SWAPFILE(file_inode(tmp.file))) { + error = XFS_ERROR(EINVAL); + goto out_put_tmp_file; + } + + ip = XFS_I(file_inode(f.file)); + tip = XFS_I(file_inode(tmp.file)); + + if (ip->i_mount != tip->i_mount) { + error = XFS_ERROR(EINVAL); + goto out_put_tmp_file; + } + + if (ip->i_ino == tip->i_ino) { + error = XFS_ERROR(EINVAL); + goto out_put_tmp_file; + } + + if (XFS_FORCED_SHUTDOWN(ip->i_mount)) { + error = XFS_ERROR(EIO); + goto out_put_tmp_file; + } + + error = xfs_swap_extents(ip, tip, sxp); + + out_put_tmp_file: + fdput(tmp); + out_put_file: + fdput(f); + out: + return error; +} + /* * Note: some of the ioctl's return positive numbers as a * byte count indicating success, such as readlink_by_handle. @@ -1472,7 +1582,7 @@ xfs_file_ioctl( error = mnt_want_write_file(filp); if (error) return error; - error = xfs_swapext(&sxp); + error = xfs_ioc_swapext(&sxp); mnt_drop_write_file(filp); return -error; } @@ -1610,23 +1720,23 @@ xfs_file_ioctl( return -error; case XFS_IOC_FREE_EOFBLOCKS: { - struct xfs_eofblocks eofb; + struct xfs_fs_eofblocks eofb; + struct xfs_eofblocks keofb; - if (copy_from_user(&eofb, arg, sizeof(eofb))) - return -XFS_ERROR(EFAULT); + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; - if (eofb.eof_version != XFS_EOFBLOCKS_VERSION) - return -XFS_ERROR(EINVAL); + if (mp->m_flags & XFS_MOUNT_RDONLY) + return -XFS_ERROR(EROFS); - if (eofb.eof_flags & ~XFS_EOF_FLAGS_VALID) - return -XFS_ERROR(EINVAL); + if (copy_from_user(&eofb, arg, sizeof(eofb))) + return -XFS_ERROR(EFAULT); - if (memchr_inv(&eofb.pad32, 0, sizeof(eofb.pad32)) || - memchr_inv(eofb.pad64, 0, sizeof(eofb.pad64))) - return -XFS_ERROR(EINVAL); + error = xfs_fs_eofblocks_from_user(&eofb, &keofb); + if (error) + return -error; - error = xfs_icache_free_eofblocks(mp, &eofb); - return -error; + return -xfs_icache_free_eofblocks(mp, &keofb); } default: diff --git a/fs/xfs/xfs_ioctl.h b/fs/xfs/xfs_ioctl.h index d56173b..77c02c7 100644 --- a/fs/xfs/xfs_ioctl.h +++ b/fs/xfs/xfs_ioctl.h @@ -27,6 +27,10 @@ xfs_ioc_space( unsigned int cmd, xfs_flock64_t *bf); +int +xfs_ioc_swapext( + xfs_swapext_t *sxp); + extern int xfs_find_handle( unsigned int cmd, @@ -82,4 +86,10 @@ xfs_file_compat_ioctl( unsigned int cmd, unsigned long arg); +extern int +xfs_set_dmattrs( + struct xfs_inode *ip, + u_int evmask, + u_int16_t state); + #endif diff --git a/fs/xfs/xfs_ioctl32.c b/fs/xfs/xfs_ioctl32.c index c0c6625..d3ab953 100644 --- a/fs/xfs/xfs_ioctl32.c +++ b/fs/xfs/xfs_ioctl32.c @@ -33,8 +33,6 @@ #include "xfs_inode.h" #include "xfs_itable.h" #include "xfs_error.h" -#include "xfs_dfrag.h" -#include "xfs_vnodeops.h" #include "xfs_fsops.h" #include "xfs_alloc.h" #include "xfs_rtalloc.h" @@ -644,7 +642,7 @@ xfs_file_compat_ioctl( error = mnt_want_write_file(filp); if (error) return error; - error = xfs_swapext(&sxp); + error = xfs_ioc_swapext(&sxp); mnt_drop_write_file(filp); return -error; } diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c index 6a70964..8d4d49b 100644 --- a/fs/xfs/xfs_iomap.c +++ b/fs/xfs/xfs_iomap.c @@ -17,6 +17,7 @@ */ #include "xfs.h" #include "xfs_fs.h" +#include "xfs_format.h" #include "xfs_log.h" #include "xfs_trans.h" #include "xfs_sb.h" @@ -32,13 +33,13 @@ #include "xfs_inode_item.h" #include "xfs_btree.h" #include "xfs_bmap.h" +#include "xfs_bmap_util.h" #include "xfs_rtalloc.h" #include "xfs_error.h" #include "xfs_itable.h" #include "xfs_attr.h" #include "xfs_buf_item.h" #include "xfs_trans_space.h" -#include "xfs_utils.h" #include "xfs_iomap.h" #include "xfs_trace.h" #include "xfs_icache.h" @@ -187,10 +188,8 @@ xfs_iomap_write_direct( * Allocate and setup the transaction */ tp = xfs_trans_alloc(mp, XFS_TRANS_DIOSTRAT); - error = xfs_trans_reserve(tp, resblks, - XFS_WRITE_LOG_RES(mp), resrtextents, - XFS_TRANS_PERM_LOG_RES, - XFS_WRITE_LOG_COUNT); + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_write, + resblks, resrtextents); /* * Check for running out of space, note: need lock to return */ @@ -698,10 +697,8 @@ xfs_iomap_write_allocate( tp = xfs_trans_alloc(mp, XFS_TRANS_STRAT_WRITE); tp->t_flags |= XFS_TRANS_RESERVE; nres = XFS_EXTENTADD_SPACE_RES(mp, XFS_DATA_FORK); - error = xfs_trans_reserve(tp, nres, - XFS_WRITE_LOG_RES(mp), - 0, XFS_TRANS_PERM_LOG_RES, - XFS_WRITE_LOG_COUNT); + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_write, + nres, 0); if (error) { xfs_trans_cancel(tp, 0); return XFS_ERROR(error); @@ -864,10 +861,8 @@ xfs_iomap_write_unwritten( sb_start_intwrite(mp->m_super); tp = _xfs_trans_alloc(mp, XFS_TRANS_STRAT_WRITE, KM_NOFS); tp->t_flags |= XFS_TRANS_RESERVE | XFS_TRANS_FREEZE_PROT; - error = xfs_trans_reserve(tp, resblks, - XFS_WRITE_LOG_RES(mp), 0, - XFS_TRANS_PERM_LOG_RES, - XFS_WRITE_LOG_COUNT); + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_write, + resblks, 0); if (error) { xfs_trans_cancel(tp, 0); return XFS_ERROR(error); diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c index 96dda62..2b8952d 100644 --- a/fs/xfs/xfs_iops.c +++ b/fs/xfs/xfs_iops.c @@ -17,6 +17,7 @@ */ #include "xfs.h" #include "xfs_fs.h" +#include "xfs_format.h" #include "xfs_acl.h" #include "xfs_log.h" #include "xfs_trans.h" @@ -29,16 +30,19 @@ #include "xfs_dinode.h" #include "xfs_inode.h" #include "xfs_bmap.h" +#include "xfs_bmap_util.h" #include "xfs_rtalloc.h" #include "xfs_error.h" #include "xfs_itable.h" #include "xfs_attr.h" #include "xfs_buf_item.h" -#include "xfs_utils.h" -#include "xfs_vnodeops.h" #include "xfs_inode_item.h" #include "xfs_trace.h" #include "xfs_icache.h" +#include "xfs_symlink.h" +#include "xfs_da_btree.h" +#include "xfs_dir2_format.h" +#include "xfs_dir2_priv.h" #include <linux/capability.h> #include <linux/xattr.h> @@ -87,10 +91,12 @@ xfs_init_security( static void xfs_dentry_to_name( struct xfs_name *namep, - struct dentry *dentry) + struct dentry *dentry, + int mode) { namep->name = dentry->d_name.name; namep->len = dentry->d_name.len; + namep->type = xfs_mode_to_ftype[(mode & S_IFMT) >> S_SHIFT]; } STATIC void @@ -106,7 +112,7 @@ xfs_cleanup_inode( * xfs_init_security we must back out. * ENOSPC can hit here, among other things. */ - xfs_dentry_to_name(&teardown, dentry); + xfs_dentry_to_name(&teardown, dentry, 0); xfs_remove(XFS_I(dir), &teardown, XFS_I(inode)); iput(inode); @@ -146,7 +152,7 @@ xfs_vn_mknod( mode &= ~current_umask(); } - xfs_dentry_to_name(&name, dentry); + xfs_dentry_to_name(&name, dentry, mode); error = xfs_create(XFS_I(dir), &name, mode, rdev, &ip); if (unlikely(error)) goto out_free_acl; @@ -207,7 +213,7 @@ xfs_vn_lookup( if (dentry->d_name.len >= MAXNAMELEN) return ERR_PTR(-ENAMETOOLONG); - xfs_dentry_to_name(&name, dentry); + xfs_dentry_to_name(&name, dentry, 0); error = xfs_lookup(XFS_I(dir), &name, &cip, NULL); if (unlikely(error)) { if (unlikely(error != ENOENT)) @@ -234,7 +240,7 @@ xfs_vn_ci_lookup( if (dentry->d_name.len >= MAXNAMELEN) return ERR_PTR(-ENAMETOOLONG); - xfs_dentry_to_name(&xname, dentry); + xfs_dentry_to_name(&xname, dentry, 0); error = xfs_lookup(XFS_I(dir), &xname, &ip, &ci_name); if (unlikely(error)) { if (unlikely(error != ENOENT)) @@ -269,7 +275,7 @@ xfs_vn_link( struct xfs_name name; int error; - xfs_dentry_to_name(&name, dentry); + xfs_dentry_to_name(&name, dentry, inode->i_mode); error = xfs_link(XFS_I(dir), XFS_I(inode), &name); if (unlikely(error)) @@ -288,7 +294,7 @@ xfs_vn_unlink( struct xfs_name name; int error; - xfs_dentry_to_name(&name, dentry); + xfs_dentry_to_name(&name, dentry, 0); error = -xfs_remove(XFS_I(dir), &name, XFS_I(dentry->d_inode)); if (error) @@ -318,7 +324,7 @@ xfs_vn_symlink( mode = S_IFLNK | (irix_symlink_mode ? 0777 & ~current_umask() : S_IRWXUGO); - xfs_dentry_to_name(&name, dentry); + xfs_dentry_to_name(&name, dentry, mode); error = xfs_symlink(XFS_I(dir), &name, symname, mode, &cip); if (unlikely(error)) @@ -350,12 +356,12 @@ xfs_vn_rename( struct xfs_name oname; struct xfs_name nname; - xfs_dentry_to_name(&oname, odentry); - xfs_dentry_to_name(&nname, ndentry); + xfs_dentry_to_name(&oname, odentry, 0); + xfs_dentry_to_name(&nname, ndentry, odentry->d_inode->i_mode); return -xfs_rename(XFS_I(odir), &oname, XFS_I(odentry->d_inode), XFS_I(ndir), &nname, new_inode ? - XFS_I(new_inode) : NULL); + XFS_I(new_inode) : NULL); } /* @@ -420,8 +426,8 @@ xfs_vn_getattr( stat->dev = inode->i_sb->s_dev; stat->mode = ip->i_d.di_mode; stat->nlink = ip->i_d.di_nlink; - stat->uid = ip->i_d.di_uid; - stat->gid = ip->i_d.di_gid; + stat->uid = inode->i_uid; + stat->gid = inode->i_gid; stat->ino = ip->i_ino; stat->atime = inode->i_atime; stat->mtime = inode->i_mtime; @@ -485,8 +491,8 @@ xfs_setattr_nonsize( int mask = iattr->ia_valid; xfs_trans_t *tp; int error; - uid_t uid = 0, iuid = 0; - gid_t gid = 0, igid = 0; + kuid_t uid = GLOBAL_ROOT_UID, iuid = GLOBAL_ROOT_UID; + kgid_t gid = GLOBAL_ROOT_GID, igid = GLOBAL_ROOT_GID; struct xfs_dquot *udqp = NULL, *gdqp = NULL; struct xfs_dquot *olddquot1 = NULL, *olddquot2 = NULL; @@ -522,13 +528,13 @@ xfs_setattr_nonsize( uid = iattr->ia_uid; qflags |= XFS_QMOPT_UQUOTA; } else { - uid = ip->i_d.di_uid; + uid = inode->i_uid; } if ((mask & ATTR_GID) && XFS_IS_GQUOTA_ON(mp)) { gid = iattr->ia_gid; qflags |= XFS_QMOPT_GQUOTA; } else { - gid = ip->i_d.di_gid; + gid = inode->i_gid; } /* @@ -538,14 +544,16 @@ xfs_setattr_nonsize( */ ASSERT(udqp == NULL); ASSERT(gdqp == NULL); - error = xfs_qm_vop_dqalloc(ip, uid, gid, xfs_get_projid(ip), - qflags, &udqp, &gdqp, NULL); + error = xfs_qm_vop_dqalloc(ip, xfs_kuid_to_uid(uid), + xfs_kgid_to_gid(gid), + xfs_get_projid(ip), + qflags, &udqp, &gdqp, NULL); if (error) return error; } tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE); - error = xfs_trans_reserve(tp, 0, XFS_ICHANGE_LOG_RES(mp), 0, 0, 0); + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_ichange, 0, 0); if (error) goto out_dqrele; @@ -561,8 +569,8 @@ xfs_setattr_nonsize( * while we didn't have the inode locked, inode's dquot(s) * would have changed also. */ - iuid = ip->i_d.di_uid; - igid = ip->i_d.di_gid; + iuid = inode->i_uid; + igid = inode->i_gid; gid = (mask & ATTR_GID) ? iattr->ia_gid : igid; uid = (mask & ATTR_UID) ? iattr->ia_uid : iuid; @@ -571,8 +579,8 @@ xfs_setattr_nonsize( * going to change. */ if (XFS_IS_QUOTA_RUNNING(mp) && - ((XFS_IS_UQUOTA_ON(mp) && iuid != uid) || - (XFS_IS_GQUOTA_ON(mp) && igid != gid))) { + ((XFS_IS_UQUOTA_ON(mp) && !uid_eq(iuid, uid)) || + (XFS_IS_GQUOTA_ON(mp) && !gid_eq(igid, gid)))) { ASSERT(tp); error = xfs_qm_vop_chown_reserve(tp, ip, udqp, gdqp, NULL, capable(CAP_FOWNER) ? @@ -602,17 +610,17 @@ xfs_setattr_nonsize( * Change the ownerships and register quota modifications * in the transaction. */ - if (iuid != uid) { + if (!uid_eq(iuid, uid)) { if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_UQUOTA_ON(mp)) { ASSERT(mask & ATTR_UID); ASSERT(udqp); olddquot1 = xfs_qm_vop_chown(tp, ip, &ip->i_udquot, udqp); } - ip->i_d.di_uid = uid; + ip->i_d.di_uid = xfs_kuid_to_uid(uid); inode->i_uid = uid; } - if (igid != gid) { + if (!gid_eq(igid, gid)) { if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_GQUOTA_ON(mp)) { ASSERT(!XFS_IS_PQUOTA_ON(mp)); ASSERT(mask & ATTR_GID); @@ -620,7 +628,7 @@ xfs_setattr_nonsize( olddquot2 = xfs_qm_vop_chown(tp, ip, &ip->i_gdquot, gdqp); } - ip->i_d.di_gid = gid; + ip->i_d.di_gid = xfs_kgid_to_gid(gid); inode->i_gid = gid; } } @@ -807,9 +815,7 @@ xfs_setattr_size( goto out_unlock; tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_SIZE); - error = xfs_trans_reserve(tp, 0, XFS_ITRUNCATE_LOG_RES(mp), 0, - XFS_TRANS_PERM_LOG_RES, - XFS_ITRUNCATE_LOG_COUNT); + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_itruncate, 0, 0); if (error) goto out_trans_cancel; @@ -932,7 +938,7 @@ xfs_vn_update_time( trace_xfs_update_time(ip); tp = xfs_trans_alloc(mp, XFS_TRANS_FSYNC_TS); - error = xfs_trans_reserve(tp, 0, XFS_FSYNC_TS_LOG_RES(mp), 0, 0, 0); + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_fsyncts, 0, 0); if (error) { xfs_trans_cancel(tp, 0); return -error; @@ -1173,8 +1179,8 @@ xfs_setup_inode( inode->i_mode = ip->i_d.di_mode; set_nlink(inode, ip->i_d.di_nlink); - inode->i_uid = ip->i_d.di_uid; - inode->i_gid = ip->i_d.di_gid; + inode->i_uid = xfs_uid_to_kuid(ip->i_d.di_uid); + inode->i_gid = xfs_gid_to_kgid(ip->i_d.di_gid); switch (inode->i_mode & S_IFMT) { case S_IFBLK: diff --git a/fs/xfs/xfs_iops.h b/fs/xfs/xfs_iops.h index ef41c92..d81fb41 100644 --- a/fs/xfs/xfs_iops.h +++ b/fs/xfs/xfs_iops.h @@ -27,4 +27,17 @@ extern ssize_t xfs_vn_listxattr(struct dentry *, char *data, size_t size); extern void xfs_setup_inode(struct xfs_inode *); +/* + * Internal setattr interfaces. + */ +#define XFS_ATTR_DMI 0x01 /* invocation from a DMI function */ +#define XFS_ATTR_NONBLOCK 0x02 /* return EAGAIN if op would block */ +#define XFS_ATTR_NOLOCK 0x04 /* Don't grab any conflicting locks */ +#define XFS_ATTR_NOACL 0x08 /* Don't call xfs_acl_chmod */ +#define XFS_ATTR_SYNC 0x10 /* synchronous operation required */ + +extern int xfs_setattr_nonsize(struct xfs_inode *ip, struct iattr *vap, + int flags); +extern int xfs_setattr_size(struct xfs_inode *ip, struct iattr *vap, int flags); + #endif /* __XFS_IOPS_H__ */ diff --git a/fs/xfs/xfs_linux.h b/fs/xfs/xfs_linux.h index 800f896..f9bb590 100644 --- a/fs/xfs/xfs_linux.h +++ b/fs/xfs/xfs_linux.h @@ -32,6 +32,38 @@ # define XFS_BIG_INUMS 0 #endif +/* + * Kernel specific type declarations for XFS + */ +typedef signed char __int8_t; +typedef unsigned char __uint8_t; +typedef signed short int __int16_t; +typedef unsigned short int __uint16_t; +typedef signed int __int32_t; +typedef unsigned int __uint32_t; +typedef signed long long int __int64_t; +typedef unsigned long long int __uint64_t; + +typedef __uint32_t inst_t; /* an instruction */ + +typedef __s64 xfs_off_t; /* <file offset> type */ +typedef unsigned long long xfs_ino_t; /* <inode> type */ +typedef __s64 xfs_daddr_t; /* <disk address> type */ +typedef char * xfs_caddr_t; /* <core address> type */ +typedef __u32 xfs_dev_t; +typedef __u32 xfs_nlink_t; + +/* __psint_t is the same size as a pointer */ +#if (BITS_PER_LONG == 32) +typedef __int32_t __psint_t; +typedef __uint32_t __psunsigned_t; +#elif (BITS_PER_LONG == 64) +typedef __int64_t __psint_t; +typedef __uint64_t __psunsigned_t; +#else +#error BITS_PER_LONG must be 32 or 64 +#endif + #include "xfs_types.h" #include "kmem.h" @@ -114,8 +146,6 @@ #define xfs_inherit_sync xfs_params.inherit_sync.val #define xfs_inherit_nodump xfs_params.inherit_nodump.val #define xfs_inherit_noatime xfs_params.inherit_noatim.val -#define xfs_buf_timer_centisecs xfs_params.xfs_buf_timer.val -#define xfs_buf_age_centisecs xfs_params.xfs_buf_age.val #define xfs_inherit_nosymlinks xfs_params.inherit_nosym.val #define xfs_rotorstep xfs_params.rotorstep.val #define xfs_inherit_nodefrag xfs_params.inherit_nodfrg.val @@ -159,6 +189,32 @@ #define MAX(a,b) (max(a,b)) #define howmany(x, y) (((x)+((y)-1))/(y)) +/* Kernel uid/gid conversion. These are used to convert to/from the on disk + * uid_t/gid_t types to the kuid_t/kgid_t types that the kernel uses internally. + * The conversion here is type only, the value will remain the same since we + * are converting to the init_user_ns. The uid is later mapped to a particular + * user namespace value when crossing the kernel/user boundary. + */ +static inline __uint32_t xfs_kuid_to_uid(kuid_t uid) +{ + return from_kuid(&init_user_ns, uid); +} + +static inline kuid_t xfs_uid_to_kuid(__uint32_t uid) +{ + return make_kuid(&init_user_ns, uid); +} + +static inline __uint32_t xfs_kgid_to_gid(kgid_t gid) +{ + return from_kgid(&init_user_ns, gid); +} + +static inline kgid_t xfs_gid_to_kgid(__uint32_t gid) +{ + return make_kgid(&init_user_ns, gid); +} + /* * Various platform dependent calls that don't fit anywhere else */ diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c index d852a2b..5372d58 100644 --- a/fs/xfs/xfs_log.c +++ b/fs/xfs/xfs_log.c @@ -614,7 +614,8 @@ xfs_log_mount( xfs_daddr_t blk_offset, int num_bblks) { - int error; + int error = 0; + int min_logfsbs; if (!(mp->m_flags & XFS_MOUNT_NORECOVERY)) xfs_notice(mp, "Mounting Filesystem"); @@ -631,6 +632,50 @@ xfs_log_mount( } /* + * Validate the given log space and drop a critical message via syslog + * if the log size is too small that would lead to some unexpected + * situations in transaction log space reservation stage. + * + * Note: we can't just reject the mount if the validation fails. This + * would mean that people would have to downgrade their kernel just to + * remedy the situation as there is no way to grow the log (short of + * black magic surgery with xfs_db). + * + * We can, however, reject mounts for CRC format filesystems, as the + * mkfs binary being used to make the filesystem should never create a + * filesystem with a log that is too small. + */ + min_logfsbs = xfs_log_calc_minimum_size(mp); + + if (mp->m_sb.sb_logblocks < min_logfsbs) { + xfs_warn(mp, + "Log size %d blocks too small, minimum size is %d blocks", + mp->m_sb.sb_logblocks, min_logfsbs); + error = EINVAL; + } else if (mp->m_sb.sb_logblocks > XFS_MAX_LOG_BLOCKS) { + xfs_warn(mp, + "Log size %d blocks too large, maximum size is %lld blocks", + mp->m_sb.sb_logblocks, XFS_MAX_LOG_BLOCKS); + error = EINVAL; + } else if (XFS_FSB_TO_B(mp, mp->m_sb.sb_logblocks) > XFS_MAX_LOG_BYTES) { + xfs_warn(mp, + "log size %lld bytes too large, maximum size is %lld bytes", + XFS_FSB_TO_B(mp, mp->m_sb.sb_logblocks), + XFS_MAX_LOG_BYTES); + error = EINVAL; + } + if (error) { + if (xfs_sb_version_hascrc(&mp->m_sb)) { + xfs_crit(mp, "AAIEEE! Log failed size checks. Abort!"); + ASSERT(0); + goto out_free_log; + } + xfs_crit(mp, +"Log size out of supported range. Continuing onwards, but if log hangs are\n" +"experienced then please report this message in the bug report."); + } + + /* * Initialize the AIL now we have a log. */ error = xfs_trans_ail_init(mp); @@ -720,7 +765,7 @@ xfs_log_mount_finish(xfs_mount_t *mp) * Unmount record used to have a string "Unmount filesystem--" in the * data section where the "Un" was really a magic number (XLOG_UNMOUNT_TYPE). * We just write the magic number now since that particular field isn't - * currently architecture converted and "nUmount" is a bit foo. + * currently architecture converted and "Unmount" is a bit foo. * As far as I know, there weren't any dependencies on the old behaviour. */ @@ -1941,7 +1986,7 @@ xlog_print_tic_res( xfs_alert_tag(mp, XFS_PTAG_LOGRES, "xlog_write: reservation ran out. Need to up reservation"); - xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE); + xfs_force_shutdown(mp, SHUTDOWN_LOG_IO_ERROR); } /* @@ -2044,7 +2089,7 @@ xlog_write_setup_ophdr( * Set up the parameters of the region copy into the log. This has * to handle region write split across multiple log buffers - this * state is kept external to this function so that this code can - * can be written in an obvious, self documenting manner. + * be written in an obvious, self documenting manner. */ static int xlog_write_setup_copy( @@ -3391,24 +3436,17 @@ xfs_log_ticket_get( } /* - * Allocate and initialise a new log ticket. + * Figure out the total log space unit (in bytes) that would be + * required for a log ticket. */ -struct xlog_ticket * -xlog_ticket_alloc( - struct xlog *log, - int unit_bytes, - int cnt, - char client, - bool permanent, - xfs_km_flags_t alloc_flags) +int +xfs_log_calc_unit_res( + struct xfs_mount *mp, + int unit_bytes) { - struct xlog_ticket *tic; - uint num_headers; - int iclog_space; - - tic = kmem_zone_zalloc(xfs_log_ticket_zone, alloc_flags); - if (!tic) - return NULL; + struct xlog *log = mp->m_log; + int iclog_space; + uint num_headers; /* * Permanent reservations have up to 'cnt'-1 active log operations @@ -3483,20 +3521,43 @@ xlog_ticket_alloc( unit_bytes += log->l_iclog_hsize; /* for roundoff padding for transaction data and one for commit record */ - if (xfs_sb_version_haslogv2(&log->l_mp->m_sb) && - log->l_mp->m_sb.sb_logsunit > 1) { + if (xfs_sb_version_haslogv2(&mp->m_sb) && mp->m_sb.sb_logsunit > 1) { /* log su roundoff */ - unit_bytes += 2*log->l_mp->m_sb.sb_logsunit; + unit_bytes += 2 * mp->m_sb.sb_logsunit; } else { /* BB roundoff */ - unit_bytes += 2*BBSIZE; + unit_bytes += 2 * BBSIZE; } + return unit_bytes; +} + +/* + * Allocate and initialise a new log ticket. + */ +struct xlog_ticket * +xlog_ticket_alloc( + struct xlog *log, + int unit_bytes, + int cnt, + char client, + bool permanent, + xfs_km_flags_t alloc_flags) +{ + struct xlog_ticket *tic; + int unit_res; + + tic = kmem_zone_zalloc(xfs_log_ticket_zone, alloc_flags); + if (!tic) + return NULL; + + unit_res = xfs_log_calc_unit_res(log->l_mp, unit_bytes); + atomic_set(&tic->t_ref, 1); tic->t_task = current; INIT_LIST_HEAD(&tic->t_queue); - tic->t_unit_res = unit_bytes; - tic->t_curr_res = unit_bytes; + tic->t_unit_res = unit_res; + tic->t_curr_res = unit_res; tic->t_cnt = cnt; tic->t_ocnt = cnt; tic->t_tid = prandom_u32(); diff --git a/fs/xfs/xfs_log.h b/fs/xfs/xfs_log.h index fb630e4..1c45848 100644 --- a/fs/xfs/xfs_log.h +++ b/fs/xfs/xfs_log.h @@ -18,14 +18,30 @@ #ifndef __XFS_LOG_H__ #define __XFS_LOG_H__ -/* get lsn fields */ -#define CYCLE_LSN(lsn) ((uint)((lsn)>>32)) -#define BLOCK_LSN(lsn) ((uint)(lsn)) +#include "xfs_log_format.h" -/* this is used in a spot where we might otherwise double-endian-flip */ -#define CYCLE_LSN_DISK(lsn) (((__be32 *)&(lsn))[0]) +struct xfs_log_vec { + struct xfs_log_vec *lv_next; /* next lv in build list */ + int lv_niovecs; /* number of iovecs in lv */ + struct xfs_log_iovec *lv_iovecp; /* iovec array */ + struct xfs_log_item *lv_item; /* owner */ + char *lv_buf; /* formatted buffer */ + int lv_buf_len; /* size of formatted buffer */ + int lv_size; /* size of allocated lv */ +}; + +#define XFS_LOG_VEC_ORDERED (-1) + +/* + * Structure used to pass callback function and the function's argument + * to the log manager. + */ +typedef struct xfs_log_callback { + struct xfs_log_callback *cb_next; + void (*cb_func)(void *, int); + void *cb_arg; +} xfs_log_callback_t; -#ifdef __KERNEL__ /* * By comparing each component, we don't have to worry about extra * endian issues in treating two 32 bit numbers as one 64 bit number @@ -59,67 +75,6 @@ static inline xfs_lsn_t _lsn_cmp(xfs_lsn_t lsn1, xfs_lsn_t lsn2) */ #define XFS_LOG_SYNC 0x1 -#endif /* __KERNEL__ */ - - -/* Log Clients */ -#define XFS_TRANSACTION 0x69 -#define XFS_VOLUME 0x2 -#define XFS_LOG 0xaa - - -/* Region types for iovec's i_type */ -#define XLOG_REG_TYPE_BFORMAT 1 -#define XLOG_REG_TYPE_BCHUNK 2 -#define XLOG_REG_TYPE_EFI_FORMAT 3 -#define XLOG_REG_TYPE_EFD_FORMAT 4 -#define XLOG_REG_TYPE_IFORMAT 5 -#define XLOG_REG_TYPE_ICORE 6 -#define XLOG_REG_TYPE_IEXT 7 -#define XLOG_REG_TYPE_IBROOT 8 -#define XLOG_REG_TYPE_ILOCAL 9 -#define XLOG_REG_TYPE_IATTR_EXT 10 -#define XLOG_REG_TYPE_IATTR_BROOT 11 -#define XLOG_REG_TYPE_IATTR_LOCAL 12 -#define XLOG_REG_TYPE_QFORMAT 13 -#define XLOG_REG_TYPE_DQUOT 14 -#define XLOG_REG_TYPE_QUOTAOFF 15 -#define XLOG_REG_TYPE_LRHEADER 16 -#define XLOG_REG_TYPE_UNMOUNT 17 -#define XLOG_REG_TYPE_COMMIT 18 -#define XLOG_REG_TYPE_TRANSHDR 19 -#define XLOG_REG_TYPE_ICREATE 20 -#define XLOG_REG_TYPE_MAX 20 - -typedef struct xfs_log_iovec { - void *i_addr; /* beginning address of region */ - int i_len; /* length in bytes of region */ - uint i_type; /* type of region */ -} xfs_log_iovec_t; - -struct xfs_log_vec { - struct xfs_log_vec *lv_next; /* next lv in build list */ - int lv_niovecs; /* number of iovecs in lv */ - struct xfs_log_iovec *lv_iovecp; /* iovec array */ - struct xfs_log_item *lv_item; /* owner */ - char *lv_buf; /* formatted buffer */ - int lv_buf_len; /* size of formatted buffer */ -}; - -#define XFS_LOG_VEC_ORDERED (-1) - -/* - * Structure used to pass callback function and the function's argument - * to the log manager. - */ -typedef struct xfs_log_callback { - struct xfs_log_callback *cb_next; - void (*cb_func)(void *, int); - void *cb_arg; -} xfs_log_callback_t; - - -#ifdef __KERNEL__ /* Log manager interfaces */ struct xfs_mount; struct xlog_in_core; @@ -188,5 +143,4 @@ void xfs_log_work_queue(struct xfs_mount *mp); void xfs_log_worker(struct work_struct *work); void xfs_log_quiesce(struct xfs_mount *mp); -#endif #endif /* __XFS_LOG_H__ */ diff --git a/fs/xfs/xfs_log_cil.c b/fs/xfs/xfs_log_cil.c index 02b9cf3..cfe9797 100644 --- a/fs/xfs/xfs_log_cil.c +++ b/fs/xfs/xfs_log_cil.c @@ -80,6 +80,83 @@ xlog_cil_init_post_recovery( log->l_curr_block); } +STATIC int +xlog_cil_lv_item_format( + struct xfs_log_item *lip, + struct xfs_log_vec *lv) +{ + int index; + char *ptr; + + /* format new vectors into array */ + lip->li_ops->iop_format(lip, lv->lv_iovecp); + + /* copy data into existing array */ + ptr = lv->lv_buf; + for (index = 0; index < lv->lv_niovecs; index++) { + struct xfs_log_iovec *vec = &lv->lv_iovecp[index]; + + memcpy(ptr, vec->i_addr, vec->i_len); + vec->i_addr = ptr; + ptr += vec->i_len; + } + + /* + * some size calculations for log vectors over-estimate, so the caller + * doesn't know the amount of space actually used by the item. Return + * the byte count to the caller so they can check and store it + * appropriately. + */ + return ptr - lv->lv_buf; +} + +/* + * Prepare the log item for insertion into the CIL. Calculate the difference in + * log space and vectors it will consume, and if it is a new item pin it as + * well. + */ +STATIC void +xfs_cil_prepare_item( + struct xlog *log, + struct xfs_log_vec *lv, + struct xfs_log_vec *old_lv, + int *diff_len, + int *diff_iovecs) +{ + /* Account for the new LV being passed in */ + if (lv->lv_buf_len != XFS_LOG_VEC_ORDERED) { + *diff_len += lv->lv_buf_len; + *diff_iovecs += lv->lv_niovecs; + } + + /* + * If there is no old LV, this is the first time we've seen the item in + * this CIL context and so we need to pin it. If we are replacing the + * old_lv, then remove the space it accounts for and free it. + */ + if (!old_lv) + lv->lv_item->li_ops->iop_pin(lv->lv_item); + else if (old_lv != lv) { + ASSERT(lv->lv_buf_len != XFS_LOG_VEC_ORDERED); + + *diff_len -= old_lv->lv_buf_len; + *diff_iovecs -= old_lv->lv_niovecs; + kmem_free(old_lv); + } + + /* attach new log vector to log item */ + lv->lv_item->li_lv = lv; + + /* + * If this is the first time the item is being committed to the + * CIL, store the sequence number on the log item so we can + * tell in future commits whether this is the first checkpoint + * the item is being committed into. + */ + if (!lv->lv_item->li_seq) + lv->lv_item->li_seq = log->l_cilp->xc_ctx->sequence; +} + /* * Format log item into a flat buffers * @@ -106,35 +183,39 @@ xlog_cil_init_post_recovery( * format the regions into the iclog as though they are being formatted * directly out of the objects themselves. */ -static struct xfs_log_vec * -xlog_cil_prepare_log_vecs( - struct xfs_trans *tp) +static void +xlog_cil_insert_format_items( + struct xlog *log, + struct xfs_trans *tp, + int *diff_len, + int *diff_iovecs) { struct xfs_log_item_desc *lidp; - struct xfs_log_vec *lv = NULL; - struct xfs_log_vec *ret_lv = NULL; /* Bail out if we didn't find a log item. */ if (list_empty(&tp->t_items)) { ASSERT(0); - return NULL; + return; } list_for_each_entry(lidp, &tp->t_items, lid_trans) { - struct xfs_log_vec *new_lv; - void *ptr; - int index; - int len = 0; - uint niovecs; + struct xfs_log_item *lip = lidp->lid_item; + struct xfs_log_vec *lv; + struct xfs_log_vec *old_lv; + int niovecs = 0; + int nbytes = 0; + int buf_size; bool ordered = false; /* Skip items which aren't dirty in this transaction. */ if (!(lidp->lid_flags & XFS_LID_DIRTY)) continue; + /* get number of vecs and size of data to be stored */ + lip->li_ops->iop_size(lip, &niovecs, &nbytes); + /* Skip items that do not have any vectors for writing */ - niovecs = IOP_SIZE(lidp->lid_item); if (!niovecs) continue; @@ -146,109 +227,63 @@ xlog_cil_prepare_log_vecs( if (niovecs == XFS_LOG_VEC_ORDERED) { ordered = true; niovecs = 0; + nbytes = 0; } - new_lv = kmem_zalloc(sizeof(*new_lv) + - niovecs * sizeof(struct xfs_log_iovec), - KM_SLEEP|KM_NOFS); - - new_lv->lv_item = lidp->lid_item; - new_lv->lv_niovecs = niovecs; - if (ordered) { - /* track as an ordered logvec */ - new_lv->lv_buf_len = XFS_LOG_VEC_ORDERED; - goto next; - } - - /* The allocated iovec region lies beyond the log vector. */ - new_lv->lv_iovecp = (struct xfs_log_iovec *)&new_lv[1]; + /* grab the old item if it exists for reservation accounting */ + old_lv = lip->li_lv; - /* build the vector array and calculate it's length */ - IOP_FORMAT(new_lv->lv_item, new_lv->lv_iovecp); - for (index = 0; index < new_lv->lv_niovecs; index++) - len += new_lv->lv_iovecp[index].i_len; + /* calc buffer size */ + buf_size = sizeof(struct xfs_log_vec) + nbytes + + niovecs * sizeof(struct xfs_log_iovec); - new_lv->lv_buf_len = len; - new_lv->lv_buf = kmem_alloc(new_lv->lv_buf_len, - KM_SLEEP|KM_NOFS); - ptr = new_lv->lv_buf; + /* compare to existing item size */ + if (lip->li_lv && buf_size <= lip->li_lv->lv_size) { + /* same or smaller, optimise common overwrite case */ + lv = lip->li_lv; + lv->lv_next = NULL; - for (index = 0; index < new_lv->lv_niovecs; index++) { - struct xfs_log_iovec *vec = &new_lv->lv_iovecp[index]; + if (ordered) + goto insert; - memcpy(ptr, vec->i_addr, vec->i_len); - vec->i_addr = ptr; - ptr += vec->i_len; - } - ASSERT(ptr == new_lv->lv_buf + new_lv->lv_buf_len); - -next: - if (!ret_lv) - ret_lv = new_lv; - else - lv->lv_next = new_lv; - lv = new_lv; - } - - return ret_lv; -} - -/* - * Prepare the log item for insertion into the CIL. Calculate the difference in - * log space and vectors it will consume, and if it is a new item pin it as - * well. - */ -STATIC void -xfs_cil_prepare_item( - struct xlog *log, - struct xfs_log_vec *lv, - int *len, - int *diff_iovecs) -{ - struct xfs_log_vec *old = lv->lv_item->li_lv; + /* + * set the item up as though it is a new insertion so + * that the space reservation accounting is correct. + */ + *diff_iovecs -= lv->lv_niovecs; + *diff_len -= lv->lv_buf_len; - if (old) { - /* existing lv on log item, space used is a delta */ - ASSERT((old->lv_buf && old->lv_buf_len && old->lv_niovecs) || - old->lv_buf_len == XFS_LOG_VEC_ORDERED); + /* Ensure the lv is set up according to ->iop_size */ + lv->lv_niovecs = niovecs; + lv->lv_buf = (char *)lv + buf_size - nbytes; - /* - * If the new item is ordered, keep the old one that is already - * tracking dirty or ordered regions - */ - if (lv->lv_buf_len == XFS_LOG_VEC_ORDERED) { - ASSERT(!lv->lv_buf); - kmem_free(lv); - return; + lv->lv_buf_len = xlog_cil_lv_item_format(lip, lv); + goto insert; } - *len += lv->lv_buf_len - old->lv_buf_len; - *diff_iovecs += lv->lv_niovecs - old->lv_niovecs; - kmem_free(old->lv_buf); - kmem_free(old); - } else { - /* new lv, must pin the log item */ - ASSERT(!lv->lv_item->li_lv); - - if (lv->lv_buf_len != XFS_LOG_VEC_ORDERED) { - *len += lv->lv_buf_len; - *diff_iovecs += lv->lv_niovecs; + /* allocate new data chunk */ + lv = kmem_zalloc(buf_size, KM_SLEEP|KM_NOFS); + lv->lv_item = lip; + lv->lv_size = buf_size; + lv->lv_niovecs = niovecs; + if (ordered) { + /* track as an ordered logvec */ + ASSERT(lip->li_lv == NULL); + lv->lv_buf_len = XFS_LOG_VEC_ORDERED; + goto insert; } - IOP_PIN(lv->lv_item); - } + /* The allocated iovec region lies beyond the log vector. */ + lv->lv_iovecp = (struct xfs_log_iovec *)&lv[1]; - /* attach new log vector to log item */ - lv->lv_item->li_lv = lv; + /* The allocated data region lies beyond the iovec region */ + lv->lv_buf = (char *)lv + buf_size - nbytes; - /* - * If this is the first time the item is being committed to the - * CIL, store the sequence number on the log item so we can - * tell in future commits whether this is the first checkpoint - * the item is being committed into. - */ - if (!lv->lv_item->li_seq) - lv->lv_item->li_seq = log->l_cilp->xc_ctx->sequence; + lv->lv_buf_len = xlog_cil_lv_item_format(lip, lv); +insert: + ASSERT(lv->lv_buf_len <= nbytes); + xfs_cil_prepare_item(log, lv, old_lv, diff_len, diff_iovecs); + } } /* @@ -261,53 +296,47 @@ xfs_cil_prepare_item( static void xlog_cil_insert_items( struct xlog *log, - struct xfs_log_vec *log_vector, - struct xlog_ticket *ticket) + struct xfs_trans *tp) { struct xfs_cil *cil = log->l_cilp; struct xfs_cil_ctx *ctx = cil->xc_ctx; - struct xfs_log_vec *lv; + struct xfs_log_item_desc *lidp; int len = 0; int diff_iovecs = 0; int iclog_space; - ASSERT(log_vector); + ASSERT(tp); /* - * Do all the accounting aggregation and switching of log vectors - * around in a separate loop to the insertion of items into the CIL. - * Then we can do a separate loop to update the CIL within a single - * lock/unlock pair. This reduces the number of round trips on the CIL - * lock from O(nr_logvectors) to O(1) and greatly reduces the overall - * hold time for the transaction commit. - * - * If this is the first time the item is being placed into the CIL in - * this context, pin it so it can't be written to disk until the CIL is - * flushed to the iclog and the iclog written to disk. - * * We can do this safely because the context can't checkpoint until we * are done so it doesn't matter exactly how we update the CIL. */ + xlog_cil_insert_format_items(log, tp, &len, &diff_iovecs); + + /* + * Now (re-)position everything modified at the tail of the CIL. + * We do this here so we only need to take the CIL lock once during + * the transaction commit. + */ spin_lock(&cil->xc_cil_lock); - for (lv = log_vector; lv; ) { - struct xfs_log_vec *next = lv->lv_next; + list_for_each_entry(lidp, &tp->t_items, lid_trans) { + struct xfs_log_item *lip = lidp->lid_item; - ASSERT(lv->lv_item->li_lv || list_empty(&lv->lv_item->li_cil)); - lv->lv_next = NULL; + /* Skip items which aren't dirty in this transaction. */ + if (!(lidp->lid_flags & XFS_LID_DIRTY)) + continue; - /* - * xfs_cil_prepare_item() may free the lv, so move the item on - * the CIL first. - */ - list_move_tail(&lv->lv_item->li_cil, &cil->xc_cil); - xfs_cil_prepare_item(log, lv, &len, &diff_iovecs); - lv = next; + list_move_tail(&lip->li_cil, &cil->xc_cil); } /* account for space used by new iovec headers */ len += diff_iovecs * sizeof(xlog_op_header_t); ctx->nvecs += diff_iovecs; + /* attach the transaction to the CIL if it has any busy extents */ + if (!list_empty(&tp->t_busy)) + list_splice_init(&tp->t_busy, &ctx->busy_extents); + /* * Now transfer enough transaction reservation to the context ticket * for the checkpoint. The context ticket is special - the unit @@ -316,10 +345,8 @@ xlog_cil_insert_items( * during the transaction commit. */ if (ctx->ticket->t_curr_res == 0) { - /* first commit in checkpoint, steal the header reservation */ - ASSERT(ticket->t_curr_res >= ctx->ticket->t_unit_res + len); ctx->ticket->t_curr_res = ctx->ticket->t_unit_res; - ticket->t_curr_res -= ctx->ticket->t_unit_res; + tp->t_ticket->t_curr_res -= ctx->ticket->t_unit_res; } /* do we need space for more log record headers? */ @@ -333,10 +360,10 @@ xlog_cil_insert_items( hdrs *= log->l_iclog_hsize + sizeof(struct xlog_op_header); ctx->ticket->t_unit_res += hdrs; ctx->ticket->t_curr_res += hdrs; - ticket->t_curr_res -= hdrs; - ASSERT(ticket->t_curr_res >= len); + tp->t_ticket->t_curr_res -= hdrs; + ASSERT(tp->t_ticket->t_curr_res >= len); } - ticket->t_curr_res -= len; + tp->t_ticket->t_curr_res -= len; ctx->space_used += len; spin_unlock(&cil->xc_cil_lock); @@ -350,7 +377,6 @@ xlog_cil_free_logvec( for (lv = log_vector; lv; ) { struct xfs_log_vec *next = lv->lv_next; - kmem_free(lv->lv_buf); kmem_free(lv); lv = next; } @@ -376,9 +402,9 @@ xlog_cil_committed( xfs_extent_busy_clear(mp, &ctx->busy_extents, (mp->m_flags & XFS_MOUNT_DISCARD) && !abort); - spin_lock(&ctx->cil->xc_cil_lock); + spin_lock(&ctx->cil->xc_push_lock); list_del(&ctx->committing); - spin_unlock(&ctx->cil->xc_cil_lock); + spin_unlock(&ctx->cil->xc_push_lock); xlog_cil_free_logvec(ctx->lv_chain); @@ -433,7 +459,7 @@ xlog_cil_push( down_write(&cil->xc_ctx_lock); ctx = cil->xc_ctx; - spin_lock(&cil->xc_cil_lock); + spin_lock(&cil->xc_push_lock); push_seq = cil->xc_push_seq; ASSERT(push_seq <= ctx->sequence); @@ -444,10 +470,10 @@ xlog_cil_push( */ if (list_empty(&cil->xc_cil)) { cil->xc_push_seq = 0; - spin_unlock(&cil->xc_cil_lock); + spin_unlock(&cil->xc_push_lock); goto out_skip; } - spin_unlock(&cil->xc_cil_lock); + spin_unlock(&cil->xc_push_lock); /* check for a previously pushed seqeunce */ @@ -515,9 +541,9 @@ xlog_cil_push( * that higher sequences will wait for us to write out a commit record * before they do. */ - spin_lock(&cil->xc_cil_lock); + spin_lock(&cil->xc_push_lock); list_add(&ctx->committing, &cil->xc_committing); - spin_unlock(&cil->xc_cil_lock); + spin_unlock(&cil->xc_push_lock); up_write(&cil->xc_ctx_lock); /* @@ -552,7 +578,7 @@ xlog_cil_push( * order the commit records so replay will get them in the right order. */ restart: - spin_lock(&cil->xc_cil_lock); + spin_lock(&cil->xc_push_lock); list_for_each_entry(new_ctx, &cil->xc_committing, committing) { /* * Higher sequences will wait for this one so skip them. @@ -565,11 +591,11 @@ restart: * It is still being pushed! Wait for the push to * complete, then start again from the beginning. */ - xlog_wait(&cil->xc_commit_wait, &cil->xc_cil_lock); + xlog_wait(&cil->xc_commit_wait, &cil->xc_push_lock); goto restart; } } - spin_unlock(&cil->xc_cil_lock); + spin_unlock(&cil->xc_push_lock); /* xfs_log_done always frees the ticket on error. */ commit_lsn = xfs_log_done(log->l_mp, tic, &commit_iclog, 0); @@ -588,10 +614,10 @@ restart: * callbacks to the iclog we can assign the commit LSN to the context * and wake up anyone who is waiting for the commit to complete. */ - spin_lock(&cil->xc_cil_lock); + spin_lock(&cil->xc_push_lock); ctx->commit_lsn = commit_lsn; wake_up_all(&cil->xc_commit_wait); - spin_unlock(&cil->xc_cil_lock); + spin_unlock(&cil->xc_push_lock); /* release the hounds! */ return xfs_log_release_iclog(log->l_mp, commit_iclog); @@ -644,12 +670,12 @@ xlog_cil_push_background( if (cil->xc_ctx->space_used < XLOG_CIL_SPACE_LIMIT(log)) return; - spin_lock(&cil->xc_cil_lock); + spin_lock(&cil->xc_push_lock); if (cil->xc_push_seq < cil->xc_current_sequence) { cil->xc_push_seq = cil->xc_current_sequence; queue_work(log->l_mp->m_cil_workqueue, &cil->xc_push_work); } - spin_unlock(&cil->xc_cil_lock); + spin_unlock(&cil->xc_push_lock); } @@ -672,14 +698,14 @@ xlog_cil_push_foreground( * If the CIL is empty or we've already pushed the sequence then * there's no work we need to do. */ - spin_lock(&cil->xc_cil_lock); + spin_lock(&cil->xc_push_lock); if (list_empty(&cil->xc_cil) || push_seq <= cil->xc_push_seq) { - spin_unlock(&cil->xc_cil_lock); + spin_unlock(&cil->xc_push_lock); return; } cil->xc_push_seq = push_seq; - spin_unlock(&cil->xc_cil_lock); + spin_unlock(&cil->xc_push_lock); /* do the push now */ xlog_cil_push(log); @@ -706,43 +732,25 @@ xfs_log_commit_cil( int flags) { struct xlog *log = mp->m_log; + struct xfs_cil *cil = log->l_cilp; int log_flags = 0; - struct xfs_log_vec *log_vector; if (flags & XFS_TRANS_RELEASE_LOG_RES) log_flags = XFS_LOG_REL_PERM_RESERV; - /* - * Do all the hard work of formatting items (including memory - * allocation) outside the CIL context lock. This prevents stalling CIL - * pushes when we are low on memory and a transaction commit spends a - * lot of time in memory reclaim. - */ - log_vector = xlog_cil_prepare_log_vecs(tp); - if (!log_vector) - return ENOMEM; - /* lock out background commit */ - down_read(&log->l_cilp->xc_ctx_lock); - if (commit_lsn) - *commit_lsn = log->l_cilp->xc_ctx->sequence; + down_read(&cil->xc_ctx_lock); - /* xlog_cil_insert_items() destroys log_vector list */ - xlog_cil_insert_items(log, log_vector, tp->t_ticket); + xlog_cil_insert_items(log, tp); /* check we didn't blow the reservation */ if (tp->t_ticket->t_curr_res < 0) - xlog_print_tic_res(log->l_mp, tp->t_ticket); + xlog_print_tic_res(mp, tp->t_ticket); - /* attach the transaction to the CIL if it has any busy extents */ - if (!list_empty(&tp->t_busy)) { - spin_lock(&log->l_cilp->xc_cil_lock); - list_splice_init(&tp->t_busy, - &log->l_cilp->xc_ctx->busy_extents); - spin_unlock(&log->l_cilp->xc_cil_lock); - } + tp->t_commit_lsn = cil->xc_ctx->sequence; + if (commit_lsn) + *commit_lsn = tp->t_commit_lsn; - tp->t_commit_lsn = *commit_lsn; xfs_log_done(mp, tp->t_ticket, NULL, log_flags); xfs_trans_unreserve_and_mod_sb(tp); @@ -757,11 +765,11 @@ xfs_log_commit_cil( * the log items. This affects (at least) processing of stale buffers, * inodes and EFIs. */ - xfs_trans_free_items(tp, *commit_lsn, 0); + xfs_trans_free_items(tp, tp->t_commit_lsn, 0); xlog_cil_push_background(log); - up_read(&log->l_cilp->xc_ctx_lock); + up_read(&cil->xc_ctx_lock); return 0; } @@ -800,7 +808,7 @@ xlog_cil_force_lsn( * on commits for those as well. */ restart: - spin_lock(&cil->xc_cil_lock); + spin_lock(&cil->xc_push_lock); list_for_each_entry(ctx, &cil->xc_committing, committing) { if (ctx->sequence > sequence) continue; @@ -809,7 +817,7 @@ restart: * It is still being pushed! Wait for the push to * complete, then start again from the beginning. */ - xlog_wait(&cil->xc_commit_wait, &cil->xc_cil_lock); + xlog_wait(&cil->xc_commit_wait, &cil->xc_push_lock); goto restart; } if (ctx->sequence != sequence) @@ -817,7 +825,7 @@ restart: /* found it! */ commit_lsn = ctx->commit_lsn; } - spin_unlock(&cil->xc_cil_lock); + spin_unlock(&cil->xc_push_lock); return commit_lsn; } @@ -875,6 +883,7 @@ xlog_cil_init( INIT_LIST_HEAD(&cil->xc_cil); INIT_LIST_HEAD(&cil->xc_committing); spin_lock_init(&cil->xc_cil_lock); + spin_lock_init(&cil->xc_push_lock); init_rwsem(&cil->xc_ctx_lock); init_waitqueue_head(&cil->xc_commit_wait); diff --git a/fs/xfs/xfs_log_format.h b/fs/xfs/xfs_log_format.h new file mode 100644 index 0000000..31e3a06 --- /dev/null +++ b/fs/xfs/xfs_log_format.h @@ -0,0 +1,852 @@ +/* + * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#ifndef __XFS_LOG_FORMAT_H__ +#define __XFS_LOG_FORMAT_H__ + +struct xfs_mount; +struct xfs_trans_res; + +/* + * On-disk Log Format definitions. + * + * This file contains all the on-disk format definitions used within the log. It + * includes the physical log structure itself, as well as all the log item + * format structures that are written into the log and intepreted by log + * recovery. We start with the physical log format definitions, and then work + * through all the log items definitions and everything they encode into the + * log. + */ +typedef __uint32_t xlog_tid_t; + +#define XLOG_MIN_ICLOGS 2 +#define XLOG_MAX_ICLOGS 8 +#define XLOG_HEADER_MAGIC_NUM 0xFEEDbabe /* Invalid cycle number */ +#define XLOG_VERSION_1 1 +#define XLOG_VERSION_2 2 /* Large IClogs, Log sunit */ +#define XLOG_VERSION_OKBITS (XLOG_VERSION_1 | XLOG_VERSION_2) +#define XLOG_MIN_RECORD_BSIZE (16*1024) /* eventually 32k */ +#define XLOG_BIG_RECORD_BSIZE (32*1024) /* 32k buffers */ +#define XLOG_MAX_RECORD_BSIZE (256*1024) +#define XLOG_HEADER_CYCLE_SIZE (32*1024) /* cycle data in header */ +#define XLOG_MIN_RECORD_BSHIFT 14 /* 16384 == 1 << 14 */ +#define XLOG_BIG_RECORD_BSHIFT 15 /* 32k == 1 << 15 */ +#define XLOG_MAX_RECORD_BSHIFT 18 /* 256k == 1 << 18 */ +#define XLOG_BTOLSUNIT(log, b) (((b)+(log)->l_mp->m_sb.sb_logsunit-1) / \ + (log)->l_mp->m_sb.sb_logsunit) +#define XLOG_LSUNITTOB(log, su) ((su) * (log)->l_mp->m_sb.sb_logsunit) + +#define XLOG_HEADER_SIZE 512 + +/* Minimum number of transactions that must fit in the log (defined by mkfs) */ +#define XFS_MIN_LOG_FACTOR 3 + +#define XLOG_REC_SHIFT(log) \ + BTOBB(1 << (xfs_sb_version_haslogv2(&log->l_mp->m_sb) ? \ + XLOG_MAX_RECORD_BSHIFT : XLOG_BIG_RECORD_BSHIFT)) +#define XLOG_TOTAL_REC_SHIFT(log) \ + BTOBB(XLOG_MAX_ICLOGS << (xfs_sb_version_haslogv2(&log->l_mp->m_sb) ? \ + XLOG_MAX_RECORD_BSHIFT : XLOG_BIG_RECORD_BSHIFT)) + +/* get lsn fields */ +#define CYCLE_LSN(lsn) ((uint)((lsn)>>32)) +#define BLOCK_LSN(lsn) ((uint)(lsn)) + +/* this is used in a spot where we might otherwise double-endian-flip */ +#define CYCLE_LSN_DISK(lsn) (((__be32 *)&(lsn))[0]) + +static inline xfs_lsn_t xlog_assign_lsn(uint cycle, uint block) +{ + return ((xfs_lsn_t)cycle << 32) | block; +} + +static inline uint xlog_get_cycle(char *ptr) +{ + if (be32_to_cpu(*(__be32 *)ptr) == XLOG_HEADER_MAGIC_NUM) + return be32_to_cpu(*((__be32 *)ptr + 1)); + else + return be32_to_cpu(*(__be32 *)ptr); +} + +/* Log Clients */ +#define XFS_TRANSACTION 0x69 +#define XFS_VOLUME 0x2 +#define XFS_LOG 0xaa + +#define XLOG_UNMOUNT_TYPE 0x556e /* Un for Unmount */ + +/* Region types for iovec's i_type */ +#define XLOG_REG_TYPE_BFORMAT 1 +#define XLOG_REG_TYPE_BCHUNK 2 +#define XLOG_REG_TYPE_EFI_FORMAT 3 +#define XLOG_REG_TYPE_EFD_FORMAT 4 +#define XLOG_REG_TYPE_IFORMAT 5 +#define XLOG_REG_TYPE_ICORE 6 +#define XLOG_REG_TYPE_IEXT 7 +#define XLOG_REG_TYPE_IBROOT 8 +#define XLOG_REG_TYPE_ILOCAL 9 +#define XLOG_REG_TYPE_IATTR_EXT 10 +#define XLOG_REG_TYPE_IATTR_BROOT 11 +#define XLOG_REG_TYPE_IATTR_LOCAL 12 +#define XLOG_REG_TYPE_QFORMAT 13 +#define XLOG_REG_TYPE_DQUOT 14 +#define XLOG_REG_TYPE_QUOTAOFF 15 +#define XLOG_REG_TYPE_LRHEADER 16 +#define XLOG_REG_TYPE_UNMOUNT 17 +#define XLOG_REG_TYPE_COMMIT 18 +#define XLOG_REG_TYPE_TRANSHDR 19 +#define XLOG_REG_TYPE_ICREATE 20 +#define XLOG_REG_TYPE_MAX 20 + +/* + * Flags to log operation header + * + * The first write of a new transaction will be preceded with a start + * record, XLOG_START_TRANS. Once a transaction is committed, a commit + * record is written, XLOG_COMMIT_TRANS. If a single region can not fit into + * the remainder of the current active in-core log, it is split up into + * multiple regions. Each partial region will be marked with a + * XLOG_CONTINUE_TRANS until the last one, which gets marked with XLOG_END_TRANS. + * + */ +#define XLOG_START_TRANS 0x01 /* Start a new transaction */ +#define XLOG_COMMIT_TRANS 0x02 /* Commit this transaction */ +#define XLOG_CONTINUE_TRANS 0x04 /* Cont this trans into new region */ +#define XLOG_WAS_CONT_TRANS 0x08 /* Cont this trans into new region */ +#define XLOG_END_TRANS 0x10 /* End a continued transaction */ +#define XLOG_UNMOUNT_TRANS 0x20 /* Unmount a filesystem transaction */ + + +typedef struct xlog_op_header { + __be32 oh_tid; /* transaction id of operation : 4 b */ + __be32 oh_len; /* bytes in data region : 4 b */ + __u8 oh_clientid; /* who sent me this : 1 b */ + __u8 oh_flags; /* : 1 b */ + __u16 oh_res2; /* 32 bit align : 2 b */ +} xlog_op_header_t; + +/* valid values for h_fmt */ +#define XLOG_FMT_UNKNOWN 0 +#define XLOG_FMT_LINUX_LE 1 +#define XLOG_FMT_LINUX_BE 2 +#define XLOG_FMT_IRIX_BE 3 + +/* our fmt */ +#ifdef XFS_NATIVE_HOST +#define XLOG_FMT XLOG_FMT_LINUX_BE +#else +#define XLOG_FMT XLOG_FMT_LINUX_LE +#endif + +typedef struct xlog_rec_header { + __be32 h_magicno; /* log record (LR) identifier : 4 */ + __be32 h_cycle; /* write cycle of log : 4 */ + __be32 h_version; /* LR version : 4 */ + __be32 h_len; /* len in bytes; should be 64-bit aligned: 4 */ + __be64 h_lsn; /* lsn of this LR : 8 */ + __be64 h_tail_lsn; /* lsn of 1st LR w/ buffers not committed: 8 */ + __le32 h_crc; /* crc of log record : 4 */ + __be32 h_prev_block; /* block number to previous LR : 4 */ + __be32 h_num_logops; /* number of log operations in this LR : 4 */ + __be32 h_cycle_data[XLOG_HEADER_CYCLE_SIZE / BBSIZE]; + /* new fields */ + __be32 h_fmt; /* format of log record : 4 */ + uuid_t h_fs_uuid; /* uuid of FS : 16 */ + __be32 h_size; /* iclog size : 4 */ +} xlog_rec_header_t; + +typedef struct xlog_rec_ext_header { + __be32 xh_cycle; /* write cycle of log : 4 */ + __be32 xh_cycle_data[XLOG_HEADER_CYCLE_SIZE / BBSIZE]; /* : 256 */ +} xlog_rec_ext_header_t; + +/* + * Quite misnamed, because this union lays out the actual on-disk log buffer. + */ +typedef union xlog_in_core2 { + xlog_rec_header_t hic_header; + xlog_rec_ext_header_t hic_xheader; + char hic_sector[XLOG_HEADER_SIZE]; +} xlog_in_core_2_t; + +/* not an on-disk structure, but needed by log recovery in userspace */ +typedef struct xfs_log_iovec { + void *i_addr; /* beginning address of region */ + int i_len; /* length in bytes of region */ + uint i_type; /* type of region */ +} xfs_log_iovec_t; + + +/* + * Transaction Header definitions. + * + * This is the structure written in the log at the head of every transaction. It + * identifies the type and id of the transaction, and contains the number of + * items logged by the transaction so we know how many to expect during + * recovery. + * + * Do not change the below structure without redoing the code in + * xlog_recover_add_to_trans() and xlog_recover_add_to_cont_trans(). + */ +typedef struct xfs_trans_header { + uint th_magic; /* magic number */ + uint th_type; /* transaction type */ + __int32_t th_tid; /* transaction id (unused) */ + uint th_num_items; /* num items logged by trans */ +} xfs_trans_header_t; + +#define XFS_TRANS_HEADER_MAGIC 0x5452414e /* TRAN */ + +/* + * Log item types. + */ +#define XFS_LI_EFI 0x1236 +#define XFS_LI_EFD 0x1237 +#define XFS_LI_IUNLINK 0x1238 +#define XFS_LI_INODE 0x123b /* aligned ino chunks, var-size ibufs */ +#define XFS_LI_BUF 0x123c /* v2 bufs, variable sized inode bufs */ +#define XFS_LI_DQUOT 0x123d +#define XFS_LI_QUOTAOFF 0x123e +#define XFS_LI_ICREATE 0x123f + +#define XFS_LI_TYPE_DESC \ + { XFS_LI_EFI, "XFS_LI_EFI" }, \ + { XFS_LI_EFD, "XFS_LI_EFD" }, \ + { XFS_LI_IUNLINK, "XFS_LI_IUNLINK" }, \ + { XFS_LI_INODE, "XFS_LI_INODE" }, \ + { XFS_LI_BUF, "XFS_LI_BUF" }, \ + { XFS_LI_DQUOT, "XFS_LI_DQUOT" }, \ + { XFS_LI_QUOTAOFF, "XFS_LI_QUOTAOFF" }, \ + { XFS_LI_ICREATE, "XFS_LI_ICREATE" } + +/* + * Transaction types. Used to distinguish types of buffers. + */ +#define XFS_TRANS_SETATTR_NOT_SIZE 1 +#define XFS_TRANS_SETATTR_SIZE 2 +#define XFS_TRANS_INACTIVE 3 +#define XFS_TRANS_CREATE 4 +#define XFS_TRANS_CREATE_TRUNC 5 +#define XFS_TRANS_TRUNCATE_FILE 6 +#define XFS_TRANS_REMOVE 7 +#define XFS_TRANS_LINK 8 +#define XFS_TRANS_RENAME 9 +#define XFS_TRANS_MKDIR 10 +#define XFS_TRANS_RMDIR 11 +#define XFS_TRANS_SYMLINK 12 +#define XFS_TRANS_SET_DMATTRS 13 +#define XFS_TRANS_GROWFS 14 +#define XFS_TRANS_STRAT_WRITE 15 +#define XFS_TRANS_DIOSTRAT 16 +/* 17 was XFS_TRANS_WRITE_SYNC */ +#define XFS_TRANS_WRITEID 18 +#define XFS_TRANS_ADDAFORK 19 +#define XFS_TRANS_ATTRINVAL 20 +#define XFS_TRANS_ATRUNCATE 21 +#define XFS_TRANS_ATTR_SET 22 +#define XFS_TRANS_ATTR_RM 23 +#define XFS_TRANS_ATTR_FLAG 24 +#define XFS_TRANS_CLEAR_AGI_BUCKET 25 +#define XFS_TRANS_QM_SBCHANGE 26 +/* + * Dummy entries since we use the transaction type to index into the + * trans_type[] in xlog_recover_print_trans_head() + */ +#define XFS_TRANS_DUMMY1 27 +#define XFS_TRANS_DUMMY2 28 +#define XFS_TRANS_QM_QUOTAOFF 29 +#define XFS_TRANS_QM_DQALLOC 30 +#define XFS_TRANS_QM_SETQLIM 31 +#define XFS_TRANS_QM_DQCLUSTER 32 +#define XFS_TRANS_QM_QINOCREATE 33 +#define XFS_TRANS_QM_QUOTAOFF_END 34 +#define XFS_TRANS_SB_UNIT 35 +#define XFS_TRANS_FSYNC_TS 36 +#define XFS_TRANS_GROWFSRT_ALLOC 37 +#define XFS_TRANS_GROWFSRT_ZERO 38 +#define XFS_TRANS_GROWFSRT_FREE 39 +#define XFS_TRANS_SWAPEXT 40 +#define XFS_TRANS_SB_COUNT 41 +#define XFS_TRANS_CHECKPOINT 42 +#define XFS_TRANS_ICREATE 43 +#define XFS_TRANS_TYPE_MAX 43 +/* new transaction types need to be reflected in xfs_logprint(8) */ + +#define XFS_TRANS_TYPES \ + { XFS_TRANS_SETATTR_NOT_SIZE, "SETATTR_NOT_SIZE" }, \ + { XFS_TRANS_SETATTR_SIZE, "SETATTR_SIZE" }, \ + { XFS_TRANS_INACTIVE, "INACTIVE" }, \ + { XFS_TRANS_CREATE, "CREATE" }, \ + { XFS_TRANS_CREATE_TRUNC, "CREATE_TRUNC" }, \ + { XFS_TRANS_TRUNCATE_FILE, "TRUNCATE_FILE" }, \ + { XFS_TRANS_REMOVE, "REMOVE" }, \ + { XFS_TRANS_LINK, "LINK" }, \ + { XFS_TRANS_RENAME, "RENAME" }, \ + { XFS_TRANS_MKDIR, "MKDIR" }, \ + { XFS_TRANS_RMDIR, "RMDIR" }, \ + { XFS_TRANS_SYMLINK, "SYMLINK" }, \ + { XFS_TRANS_SET_DMATTRS, "SET_DMATTRS" }, \ + { XFS_TRANS_GROWFS, "GROWFS" }, \ + { XFS_TRANS_STRAT_WRITE, "STRAT_WRITE" }, \ + { XFS_TRANS_DIOSTRAT, "DIOSTRAT" }, \ + { XFS_TRANS_WRITEID, "WRITEID" }, \ + { XFS_TRANS_ADDAFORK, "ADDAFORK" }, \ + { XFS_TRANS_ATTRINVAL, "ATTRINVAL" }, \ + { XFS_TRANS_ATRUNCATE, "ATRUNCATE" }, \ + { XFS_TRANS_ATTR_SET, "ATTR_SET" }, \ + { XFS_TRANS_ATTR_RM, "ATTR_RM" }, \ + { XFS_TRANS_ATTR_FLAG, "ATTR_FLAG" }, \ + { XFS_TRANS_CLEAR_AGI_BUCKET, "CLEAR_AGI_BUCKET" }, \ + { XFS_TRANS_QM_SBCHANGE, "QM_SBCHANGE" }, \ + { XFS_TRANS_QM_QUOTAOFF, "QM_QUOTAOFF" }, \ + { XFS_TRANS_QM_DQALLOC, "QM_DQALLOC" }, \ + { XFS_TRANS_QM_SETQLIM, "QM_SETQLIM" }, \ + { XFS_TRANS_QM_DQCLUSTER, "QM_DQCLUSTER" }, \ + { XFS_TRANS_QM_QINOCREATE, "QM_QINOCREATE" }, \ + { XFS_TRANS_QM_QUOTAOFF_END, "QM_QOFF_END" }, \ + { XFS_TRANS_SB_UNIT, "SB_UNIT" }, \ + { XFS_TRANS_FSYNC_TS, "FSYNC_TS" }, \ + { XFS_TRANS_GROWFSRT_ALLOC, "GROWFSRT_ALLOC" }, \ + { XFS_TRANS_GROWFSRT_ZERO, "GROWFSRT_ZERO" }, \ + { XFS_TRANS_GROWFSRT_FREE, "GROWFSRT_FREE" }, \ + { XFS_TRANS_SWAPEXT, "SWAPEXT" }, \ + { XFS_TRANS_SB_COUNT, "SB_COUNT" }, \ + { XFS_TRANS_CHECKPOINT, "CHECKPOINT" }, \ + { XFS_TRANS_DUMMY1, "DUMMY1" }, \ + { XFS_TRANS_DUMMY2, "DUMMY2" }, \ + { XLOG_UNMOUNT_REC_TYPE, "UNMOUNT" } + +/* + * This structure is used to track log items associated with + * a transaction. It points to the log item and keeps some + * flags to track the state of the log item. It also tracks + * the amount of space needed to log the item it describes + * once we get to commit processing (see xfs_trans_commit()). + */ +struct xfs_log_item_desc { + struct xfs_log_item *lid_item; + struct list_head lid_trans; + unsigned char lid_flags; +}; + +#define XFS_LID_DIRTY 0x1 + +/* + * Values for t_flags. + */ +#define XFS_TRANS_DIRTY 0x01 /* something needs to be logged */ +#define XFS_TRANS_SB_DIRTY 0x02 /* superblock is modified */ +#define XFS_TRANS_PERM_LOG_RES 0x04 /* xact took a permanent log res */ +#define XFS_TRANS_SYNC 0x08 /* make commit synchronous */ +#define XFS_TRANS_DQ_DIRTY 0x10 /* at least one dquot in trx dirty */ +#define XFS_TRANS_RESERVE 0x20 /* OK to use reserved data blocks */ +#define XFS_TRANS_FREEZE_PROT 0x40 /* Transaction has elevated writer + count in superblock */ + +/* + * Values for call flags parameter. + */ +#define XFS_TRANS_RELEASE_LOG_RES 0x4 +#define XFS_TRANS_ABORT 0x8 + +/* + * Field values for xfs_trans_mod_sb. + */ +#define XFS_TRANS_SB_ICOUNT 0x00000001 +#define XFS_TRANS_SB_IFREE 0x00000002 +#define XFS_TRANS_SB_FDBLOCKS 0x00000004 +#define XFS_TRANS_SB_RES_FDBLOCKS 0x00000008 +#define XFS_TRANS_SB_FREXTENTS 0x00000010 +#define XFS_TRANS_SB_RES_FREXTENTS 0x00000020 +#define XFS_TRANS_SB_DBLOCKS 0x00000040 +#define XFS_TRANS_SB_AGCOUNT 0x00000080 +#define XFS_TRANS_SB_IMAXPCT 0x00000100 +#define XFS_TRANS_SB_REXTSIZE 0x00000200 +#define XFS_TRANS_SB_RBMBLOCKS 0x00000400 +#define XFS_TRANS_SB_RBLOCKS 0x00000800 +#define XFS_TRANS_SB_REXTENTS 0x00001000 +#define XFS_TRANS_SB_REXTSLOG 0x00002000 + +/* + * Here we centralize the specification of XFS meta-data buffer + * reference count values. This determine how hard the buffer + * cache tries to hold onto the buffer. + */ +#define XFS_AGF_REF 4 +#define XFS_AGI_REF 4 +#define XFS_AGFL_REF 3 +#define XFS_INO_BTREE_REF 3 +#define XFS_ALLOC_BTREE_REF 2 +#define XFS_BMAP_BTREE_REF 2 +#define XFS_DIR_BTREE_REF 2 +#define XFS_INO_REF 2 +#define XFS_ATTR_BTREE_REF 1 +#define XFS_DQUOT_REF 1 + +/* + * Flags for xfs_trans_ichgtime(). + */ +#define XFS_ICHGTIME_MOD 0x1 /* data fork modification timestamp */ +#define XFS_ICHGTIME_CHG 0x2 /* inode field change timestamp */ +#define XFS_ICHGTIME_CREATE 0x4 /* inode create timestamp */ + + +/* + * Inode Log Item Format definitions. + * + * This is the structure used to lay out an inode log item in the + * log. The size of the inline data/extents/b-tree root to be logged + * (if any) is indicated in the ilf_dsize field. Changes to this structure + * must be added on to the end. + */ +typedef struct xfs_inode_log_format { + __uint16_t ilf_type; /* inode log item type */ + __uint16_t ilf_size; /* size of this item */ + __uint32_t ilf_fields; /* flags for fields logged */ + __uint16_t ilf_asize; /* size of attr d/ext/root */ + __uint16_t ilf_dsize; /* size of data/ext/root */ + __uint64_t ilf_ino; /* inode number */ + union { + __uint32_t ilfu_rdev; /* rdev value for dev inode*/ + uuid_t ilfu_uuid; /* mount point value */ + } ilf_u; + __int64_t ilf_blkno; /* blkno of inode buffer */ + __int32_t ilf_len; /* len of inode buffer */ + __int32_t ilf_boffset; /* off of inode in buffer */ +} xfs_inode_log_format_t; + +typedef struct xfs_inode_log_format_32 { + __uint16_t ilf_type; /* inode log item type */ + __uint16_t ilf_size; /* size of this item */ + __uint32_t ilf_fields; /* flags for fields logged */ + __uint16_t ilf_asize; /* size of attr d/ext/root */ + __uint16_t ilf_dsize; /* size of data/ext/root */ + __uint64_t ilf_ino; /* inode number */ + union { + __uint32_t ilfu_rdev; /* rdev value for dev inode*/ + uuid_t ilfu_uuid; /* mount point value */ + } ilf_u; + __int64_t ilf_blkno; /* blkno of inode buffer */ + __int32_t ilf_len; /* len of inode buffer */ + __int32_t ilf_boffset; /* off of inode in buffer */ +} __attribute__((packed)) xfs_inode_log_format_32_t; + +typedef struct xfs_inode_log_format_64 { + __uint16_t ilf_type; /* inode log item type */ + __uint16_t ilf_size; /* size of this item */ + __uint32_t ilf_fields; /* flags for fields logged */ + __uint16_t ilf_asize; /* size of attr d/ext/root */ + __uint16_t ilf_dsize; /* size of data/ext/root */ + __uint32_t ilf_pad; /* pad for 64 bit boundary */ + __uint64_t ilf_ino; /* inode number */ + union { + __uint32_t ilfu_rdev; /* rdev value for dev inode*/ + uuid_t ilfu_uuid; /* mount point value */ + } ilf_u; + __int64_t ilf_blkno; /* blkno of inode buffer */ + __int32_t ilf_len; /* len of inode buffer */ + __int32_t ilf_boffset; /* off of inode in buffer */ +} xfs_inode_log_format_64_t; + +/* + * Flags for xfs_trans_log_inode flags field. + */ +#define XFS_ILOG_CORE 0x001 /* log standard inode fields */ +#define XFS_ILOG_DDATA 0x002 /* log i_df.if_data */ +#define XFS_ILOG_DEXT 0x004 /* log i_df.if_extents */ +#define XFS_ILOG_DBROOT 0x008 /* log i_df.i_broot */ +#define XFS_ILOG_DEV 0x010 /* log the dev field */ +#define XFS_ILOG_UUID 0x020 /* log the uuid field */ +#define XFS_ILOG_ADATA 0x040 /* log i_af.if_data */ +#define XFS_ILOG_AEXT 0x080 /* log i_af.if_extents */ +#define XFS_ILOG_ABROOT 0x100 /* log i_af.i_broot */ + + +/* + * The timestamps are dirty, but not necessarily anything else in the inode + * core. Unlike the other fields above this one must never make it to disk + * in the ilf_fields of the inode_log_format, but is purely store in-memory in + * ili_fields in the inode_log_item. + */ +#define XFS_ILOG_TIMESTAMP 0x4000 + +#define XFS_ILOG_NONCORE (XFS_ILOG_DDATA | XFS_ILOG_DEXT | \ + XFS_ILOG_DBROOT | XFS_ILOG_DEV | \ + XFS_ILOG_UUID | XFS_ILOG_ADATA | \ + XFS_ILOG_AEXT | XFS_ILOG_ABROOT) + +#define XFS_ILOG_DFORK (XFS_ILOG_DDATA | XFS_ILOG_DEXT | \ + XFS_ILOG_DBROOT) + +#define XFS_ILOG_AFORK (XFS_ILOG_ADATA | XFS_ILOG_AEXT | \ + XFS_ILOG_ABROOT) + +#define XFS_ILOG_ALL (XFS_ILOG_CORE | XFS_ILOG_DDATA | \ + XFS_ILOG_DEXT | XFS_ILOG_DBROOT | \ + XFS_ILOG_DEV | XFS_ILOG_UUID | \ + XFS_ILOG_ADATA | XFS_ILOG_AEXT | \ + XFS_ILOG_ABROOT | XFS_ILOG_TIMESTAMP) + +static inline int xfs_ilog_fbroot(int w) +{ + return (w == XFS_DATA_FORK ? XFS_ILOG_DBROOT : XFS_ILOG_ABROOT); +} + +static inline int xfs_ilog_fext(int w) +{ + return (w == XFS_DATA_FORK ? XFS_ILOG_DEXT : XFS_ILOG_AEXT); +} + +static inline int xfs_ilog_fdata(int w) +{ + return (w == XFS_DATA_FORK ? XFS_ILOG_DDATA : XFS_ILOG_ADATA); +} + +/* + * Incore version of the on-disk inode core structures. We log this directly + * into the journal in host CPU format (for better or worse) and as such + * directly mirrors the xfs_dinode structure as it must contain all the same + * information. + */ +typedef struct xfs_ictimestamp { + __int32_t t_sec; /* timestamp seconds */ + __int32_t t_nsec; /* timestamp nanoseconds */ +} xfs_ictimestamp_t; + +/* + * NOTE: This structure must be kept identical to struct xfs_dinode + * in xfs_dinode.h except for the endianness annotations. + */ +typedef struct xfs_icdinode { + __uint16_t di_magic; /* inode magic # = XFS_DINODE_MAGIC */ + __uint16_t di_mode; /* mode and type of file */ + __int8_t di_version; /* inode version */ + __int8_t di_format; /* format of di_c data */ + __uint16_t di_onlink; /* old number of links to file */ + __uint32_t di_uid; /* owner's user id */ + __uint32_t di_gid; /* owner's group id */ + __uint32_t di_nlink; /* number of links to file */ + __uint16_t di_projid_lo; /* lower part of owner's project id */ + __uint16_t di_projid_hi; /* higher part of owner's project id */ + __uint8_t di_pad[6]; /* unused, zeroed space */ + __uint16_t di_flushiter; /* incremented on flush */ + xfs_ictimestamp_t di_atime; /* time last accessed */ + xfs_ictimestamp_t di_mtime; /* time last modified */ + xfs_ictimestamp_t di_ctime; /* time created/inode modified */ + xfs_fsize_t di_size; /* number of bytes in file */ + xfs_drfsbno_t di_nblocks; /* # of direct & btree blocks used */ + xfs_extlen_t di_extsize; /* basic/minimum extent size for file */ + xfs_extnum_t di_nextents; /* number of extents in data fork */ + xfs_aextnum_t di_anextents; /* number of extents in attribute fork*/ + __uint8_t di_forkoff; /* attr fork offs, <<3 for 64b align */ + __int8_t di_aformat; /* format of attr fork's data */ + __uint32_t di_dmevmask; /* DMIG event mask */ + __uint16_t di_dmstate; /* DMIG state info */ + __uint16_t di_flags; /* random flags, XFS_DIFLAG_... */ + __uint32_t di_gen; /* generation number */ + + /* di_next_unlinked is the only non-core field in the old dinode */ + xfs_agino_t di_next_unlinked;/* agi unlinked list ptr */ + + /* start of the extended dinode, writable fields */ + __uint32_t di_crc; /* CRC of the inode */ + __uint64_t di_changecount; /* number of attribute changes */ + xfs_lsn_t di_lsn; /* flush sequence */ + __uint64_t di_flags2; /* more random flags */ + __uint8_t di_pad2[16]; /* more padding for future expansion */ + + /* fields only written to during inode creation */ + xfs_ictimestamp_t di_crtime; /* time created */ + xfs_ino_t di_ino; /* inode number */ + uuid_t di_uuid; /* UUID of the filesystem */ + + /* structure must be padded to 64 bit alignment */ +} xfs_icdinode_t; + +static inline uint xfs_icdinode_size(int version) +{ + if (version == 3) + return sizeof(struct xfs_icdinode); + return offsetof(struct xfs_icdinode, di_next_unlinked); +} + +/* + * Buffer Log Format defintions + * + * These are the physical dirty bitmap defintions for the log format structure. + */ +#define XFS_BLF_CHUNK 128 +#define XFS_BLF_SHIFT 7 +#define BIT_TO_WORD_SHIFT 5 +#define NBWORD (NBBY * sizeof(unsigned int)) + +/* + * This flag indicates that the buffer contains on disk inodes + * and requires special recovery handling. + */ +#define XFS_BLF_INODE_BUF (1<<0) + +/* + * This flag indicates that the buffer should not be replayed + * during recovery because its blocks are being freed. + */ +#define XFS_BLF_CANCEL (1<<1) + +/* + * This flag indicates that the buffer contains on disk + * user or group dquots and may require special recovery handling. + */ +#define XFS_BLF_UDQUOT_BUF (1<<2) +#define XFS_BLF_PDQUOT_BUF (1<<3) +#define XFS_BLF_GDQUOT_BUF (1<<4) + +/* + * This is the structure used to lay out a buf log item in the + * log. The data map describes which 128 byte chunks of the buffer + * have been logged. + */ +#define XFS_BLF_DATAMAP_SIZE ((XFS_MAX_BLOCKSIZE / XFS_BLF_CHUNK) / NBWORD) + +typedef struct xfs_buf_log_format { + unsigned short blf_type; /* buf log item type indicator */ + unsigned short blf_size; /* size of this item */ + ushort blf_flags; /* misc state */ + ushort blf_len; /* number of blocks in this buf */ + __int64_t blf_blkno; /* starting blkno of this buf */ + unsigned int blf_map_size; /* used size of data bitmap in words */ + unsigned int blf_data_map[XFS_BLF_DATAMAP_SIZE]; /* dirty bitmap */ +} xfs_buf_log_format_t; + +/* + * All buffers now need to tell recovery where the magic number + * is so that it can verify and calculate the CRCs on the buffer correctly + * once the changes have been replayed into the buffer. + * + * The type value is held in the upper 5 bits of the blf_flags field, which is + * an unsigned 16 bit field. Hence we need to shift it 11 bits up and down. + */ +#define XFS_BLFT_BITS 5 +#define XFS_BLFT_SHIFT 11 +#define XFS_BLFT_MASK (((1 << XFS_BLFT_BITS) - 1) << XFS_BLFT_SHIFT) + +enum xfs_blft { + XFS_BLFT_UNKNOWN_BUF = 0, + XFS_BLFT_UDQUOT_BUF, + XFS_BLFT_PDQUOT_BUF, + XFS_BLFT_GDQUOT_BUF, + XFS_BLFT_BTREE_BUF, + XFS_BLFT_AGF_BUF, + XFS_BLFT_AGFL_BUF, + XFS_BLFT_AGI_BUF, + XFS_BLFT_DINO_BUF, + XFS_BLFT_SYMLINK_BUF, + XFS_BLFT_DIR_BLOCK_BUF, + XFS_BLFT_DIR_DATA_BUF, + XFS_BLFT_DIR_FREE_BUF, + XFS_BLFT_DIR_LEAF1_BUF, + XFS_BLFT_DIR_LEAFN_BUF, + XFS_BLFT_DA_NODE_BUF, + XFS_BLFT_ATTR_LEAF_BUF, + XFS_BLFT_ATTR_RMT_BUF, + XFS_BLFT_SB_BUF, + XFS_BLFT_MAX_BUF = (1 << XFS_BLFT_BITS), +}; + +static inline void +xfs_blft_to_flags(struct xfs_buf_log_format *blf, enum xfs_blft type) +{ + ASSERT(type > XFS_BLFT_UNKNOWN_BUF && type < XFS_BLFT_MAX_BUF); + blf->blf_flags &= ~XFS_BLFT_MASK; + blf->blf_flags |= ((type << XFS_BLFT_SHIFT) & XFS_BLFT_MASK); +} + +static inline __uint16_t +xfs_blft_from_flags(struct xfs_buf_log_format *blf) +{ + return (blf->blf_flags & XFS_BLFT_MASK) >> XFS_BLFT_SHIFT; +} + +/* + * EFI/EFD log format definitions + */ +typedef struct xfs_extent { + xfs_dfsbno_t ext_start; + xfs_extlen_t ext_len; +} xfs_extent_t; + +/* + * Since an xfs_extent_t has types (start:64, len: 32) + * there are different alignments on 32 bit and 64 bit kernels. + * So we provide the different variants for use by a + * conversion routine. + */ +typedef struct xfs_extent_32 { + __uint64_t ext_start; + __uint32_t ext_len; +} __attribute__((packed)) xfs_extent_32_t; + +typedef struct xfs_extent_64 { + __uint64_t ext_start; + __uint32_t ext_len; + __uint32_t ext_pad; +} xfs_extent_64_t; + +/* + * This is the structure used to lay out an efi log item in the + * log. The efi_extents field is a variable size array whose + * size is given by efi_nextents. + */ +typedef struct xfs_efi_log_format { + __uint16_t efi_type; /* efi log item type */ + __uint16_t efi_size; /* size of this item */ + __uint32_t efi_nextents; /* # extents to free */ + __uint64_t efi_id; /* efi identifier */ + xfs_extent_t efi_extents[1]; /* array of extents to free */ +} xfs_efi_log_format_t; + +typedef struct xfs_efi_log_format_32 { + __uint16_t efi_type; /* efi log item type */ + __uint16_t efi_size; /* size of this item */ + __uint32_t efi_nextents; /* # extents to free */ + __uint64_t efi_id; /* efi identifier */ + xfs_extent_32_t efi_extents[1]; /* array of extents to free */ +} __attribute__((packed)) xfs_efi_log_format_32_t; + +typedef struct xfs_efi_log_format_64 { + __uint16_t efi_type; /* efi log item type */ + __uint16_t efi_size; /* size of this item */ + __uint32_t efi_nextents; /* # extents to free */ + __uint64_t efi_id; /* efi identifier */ + xfs_extent_64_t efi_extents[1]; /* array of extents to free */ +} xfs_efi_log_format_64_t; + +/* + * This is the structure used to lay out an efd log item in the + * log. The efd_extents array is a variable size array whose + * size is given by efd_nextents; + */ +typedef struct xfs_efd_log_format { + __uint16_t efd_type; /* efd log item type */ + __uint16_t efd_size; /* size of this item */ + __uint32_t efd_nextents; /* # of extents freed */ + __uint64_t efd_efi_id; /* id of corresponding efi */ + xfs_extent_t efd_extents[1]; /* array of extents freed */ +} xfs_efd_log_format_t; + +typedef struct xfs_efd_log_format_32 { + __uint16_t efd_type; /* efd log item type */ + __uint16_t efd_size; /* size of this item */ + __uint32_t efd_nextents; /* # of extents freed */ + __uint64_t efd_efi_id; /* id of corresponding efi */ + xfs_extent_32_t efd_extents[1]; /* array of extents freed */ +} __attribute__((packed)) xfs_efd_log_format_32_t; + +typedef struct xfs_efd_log_format_64 { + __uint16_t efd_type; /* efd log item type */ + __uint16_t efd_size; /* size of this item */ + __uint32_t efd_nextents; /* # of extents freed */ + __uint64_t efd_efi_id; /* id of corresponding efi */ + xfs_extent_64_t efd_extents[1]; /* array of extents freed */ +} xfs_efd_log_format_64_t; + +/* + * Dquot Log format definitions. + * + * The first two fields must be the type and size fitting into + * 32 bits : log_recovery code assumes that. + */ +typedef struct xfs_dq_logformat { + __uint16_t qlf_type; /* dquot log item type */ + __uint16_t qlf_size; /* size of this item */ + xfs_dqid_t qlf_id; /* usr/grp/proj id : 32 bits */ + __int64_t qlf_blkno; /* blkno of dquot buffer */ + __int32_t qlf_len; /* len of dquot buffer */ + __uint32_t qlf_boffset; /* off of dquot in buffer */ +} xfs_dq_logformat_t; + +/* + * log format struct for QUOTAOFF records. + * The first two fields must be the type and size fitting into + * 32 bits : log_recovery code assumes that. + * We write two LI_QUOTAOFF logitems per quotaoff, the last one keeps a pointer + * to the first and ensures that the first logitem is taken out of the AIL + * only when the last one is securely committed. + */ +typedef struct xfs_qoff_logformat { + unsigned short qf_type; /* quotaoff log item type */ + unsigned short qf_size; /* size of this item */ + unsigned int qf_flags; /* USR and/or GRP */ + char qf_pad[12]; /* padding for future */ +} xfs_qoff_logformat_t; + + +/* + * Disk quotas status in m_qflags, and also sb_qflags. 16 bits. + */ +#define XFS_UQUOTA_ACCT 0x0001 /* user quota accounting ON */ +#define XFS_UQUOTA_ENFD 0x0002 /* user quota limits enforced */ +#define XFS_UQUOTA_CHKD 0x0004 /* quotacheck run on usr quotas */ +#define XFS_PQUOTA_ACCT 0x0008 /* project quota accounting ON */ +#define XFS_OQUOTA_ENFD 0x0010 /* other (grp/prj) quota limits enforced */ +#define XFS_OQUOTA_CHKD 0x0020 /* quotacheck run on other (grp/prj) quotas */ +#define XFS_GQUOTA_ACCT 0x0040 /* group quota accounting ON */ + +/* + * Conversion to and from the combined OQUOTA flag (if necessary) + * is done only in xfs_sb_qflags_to_disk() and xfs_sb_qflags_from_disk() + */ +#define XFS_GQUOTA_ENFD 0x0080 /* group quota limits enforced */ +#define XFS_GQUOTA_CHKD 0x0100 /* quotacheck run on group quotas */ +#define XFS_PQUOTA_ENFD 0x0200 /* project quota limits enforced */ +#define XFS_PQUOTA_CHKD 0x0400 /* quotacheck run on project quotas */ + +#define XFS_ALL_QUOTA_ACCT \ + (XFS_UQUOTA_ACCT | XFS_GQUOTA_ACCT | XFS_PQUOTA_ACCT) +#define XFS_ALL_QUOTA_ENFD \ + (XFS_UQUOTA_ENFD | XFS_GQUOTA_ENFD | XFS_PQUOTA_ENFD) +#define XFS_ALL_QUOTA_CHKD \ + (XFS_UQUOTA_CHKD | XFS_GQUOTA_CHKD | XFS_PQUOTA_CHKD) + +#define XFS_MOUNT_QUOTA_ALL (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD|\ + XFS_UQUOTA_CHKD|XFS_GQUOTA_ACCT|\ + XFS_GQUOTA_ENFD|XFS_GQUOTA_CHKD|\ + XFS_PQUOTA_ACCT|XFS_PQUOTA_ENFD|\ + XFS_PQUOTA_CHKD) + +/* + * Inode create log item structure + * + * Log recovery assumes the first two entries are the type and size and they fit + * in 32 bits. Also in host order (ugh) so they have to be 32 bit aligned so + * decoding can be done correctly. + */ +struct xfs_icreate_log { + __uint16_t icl_type; /* type of log format structure */ + __uint16_t icl_size; /* size of log format structure */ + __be32 icl_ag; /* ag being allocated in */ + __be32 icl_agbno; /* start block of inode range */ + __be32 icl_count; /* number of inodes to initialise */ + __be32 icl_isize; /* size of inodes */ + __be32 icl_length; /* length of extent to initialise */ + __be32 icl_gen; /* inode generation number to use */ +}; + +int xfs_log_calc_unit_res(struct xfs_mount *mp, int unit_bytes); +int xfs_log_calc_minimum_size(struct xfs_mount *); + + +#endif /* __XFS_LOG_FORMAT_H__ */ diff --git a/fs/xfs/xfs_log_priv.h b/fs/xfs/xfs_log_priv.h index b9ea262..136654b 100644 --- a/fs/xfs/xfs_log_priv.h +++ b/fs/xfs/xfs_log_priv.h @@ -24,51 +24,13 @@ struct xlog_ticket; struct xfs_mount; /* - * Macros, structures, prototypes for internal log manager use. + * Flags for log structure */ - -#define XLOG_MIN_ICLOGS 2 -#define XLOG_MAX_ICLOGS 8 -#define XLOG_HEADER_MAGIC_NUM 0xFEEDbabe /* Invalid cycle number */ -#define XLOG_VERSION_1 1 -#define XLOG_VERSION_2 2 /* Large IClogs, Log sunit */ -#define XLOG_VERSION_OKBITS (XLOG_VERSION_1 | XLOG_VERSION_2) -#define XLOG_MIN_RECORD_BSIZE (16*1024) /* eventually 32k */ -#define XLOG_BIG_RECORD_BSIZE (32*1024) /* 32k buffers */ -#define XLOG_MAX_RECORD_BSIZE (256*1024) -#define XLOG_HEADER_CYCLE_SIZE (32*1024) /* cycle data in header */ -#define XLOG_MIN_RECORD_BSHIFT 14 /* 16384 == 1 << 14 */ -#define XLOG_BIG_RECORD_BSHIFT 15 /* 32k == 1 << 15 */ -#define XLOG_MAX_RECORD_BSHIFT 18 /* 256k == 1 << 18 */ -#define XLOG_BTOLSUNIT(log, b) (((b)+(log)->l_mp->m_sb.sb_logsunit-1) / \ - (log)->l_mp->m_sb.sb_logsunit) -#define XLOG_LSUNITTOB(log, su) ((su) * (log)->l_mp->m_sb.sb_logsunit) - -#define XLOG_HEADER_SIZE 512 - -#define XLOG_REC_SHIFT(log) \ - BTOBB(1 << (xfs_sb_version_haslogv2(&log->l_mp->m_sb) ? \ - XLOG_MAX_RECORD_BSHIFT : XLOG_BIG_RECORD_BSHIFT)) -#define XLOG_TOTAL_REC_SHIFT(log) \ - BTOBB(XLOG_MAX_ICLOGS << (xfs_sb_version_haslogv2(&log->l_mp->m_sb) ? \ - XLOG_MAX_RECORD_BSHIFT : XLOG_BIG_RECORD_BSHIFT)) - -static inline xfs_lsn_t xlog_assign_lsn(uint cycle, uint block) -{ - return ((xfs_lsn_t)cycle << 32) | block; -} - -static inline uint xlog_get_cycle(char *ptr) -{ - if (be32_to_cpu(*(__be32 *)ptr) == XLOG_HEADER_MAGIC_NUM) - return be32_to_cpu(*((__be32 *)ptr + 1)); - else - return be32_to_cpu(*(__be32 *)ptr); -} - -#define BLK_AVG(blk1, blk2) ((blk1+blk2) >> 1) - -#ifdef __KERNEL__ +#define XLOG_ACTIVE_RECOVERY 0x2 /* in the middle of recovery */ +#define XLOG_RECOVERY_NEEDED 0x4 /* log was recovered */ +#define XLOG_IO_ERROR 0x8 /* log hit an I/O error, and being + shutdown */ +#define XLOG_TAIL_WARN 0x10 /* log tail verify warning issued */ /* * get client id from packed copy. @@ -101,28 +63,8 @@ static inline uint xlog_get_client_id(__be32 i) #define XLOG_STATE_IOERROR 0x0080 /* IO error happened in sync'ing log */ #define XLOG_STATE_ALL 0x7FFF /* All possible valid flags */ #define XLOG_STATE_NOTUSED 0x8000 /* This IC log not being used */ -#endif /* __KERNEL__ */ /* - * Flags to log operation header - * - * The first write of a new transaction will be preceded with a start - * record, XLOG_START_TRANS. Once a transaction is committed, a commit - * record is written, XLOG_COMMIT_TRANS. If a single region can not fit into - * the remainder of the current active in-core log, it is split up into - * multiple regions. Each partial region will be marked with a - * XLOG_CONTINUE_TRANS until the last one, which gets marked with XLOG_END_TRANS. - * - */ -#define XLOG_START_TRANS 0x01 /* Start a new transaction */ -#define XLOG_COMMIT_TRANS 0x02 /* Commit this transaction */ -#define XLOG_CONTINUE_TRANS 0x04 /* Cont this trans into new region */ -#define XLOG_WAS_CONT_TRANS 0x08 /* Cont this trans into new region */ -#define XLOG_END_TRANS 0x10 /* End a continued transaction */ -#define XLOG_UNMOUNT_TRANS 0x20 /* Unmount a filesystem transaction */ - -#ifdef __KERNEL__ -/* * Flags to log ticket */ #define XLOG_TIC_INITED 0x1 /* has been initialized */ @@ -132,22 +74,6 @@ static inline uint xlog_get_client_id(__be32 i) { XLOG_TIC_INITED, "XLOG_TIC_INITED" }, \ { XLOG_TIC_PERM_RESERV, "XLOG_TIC_PERM_RESERV" } -#endif /* __KERNEL__ */ - -#define XLOG_UNMOUNT_TYPE 0x556e /* Un for Unmount */ - -/* - * Flags for log structure - */ -#define XLOG_ACTIVE_RECOVERY 0x2 /* in the middle of recovery */ -#define XLOG_RECOVERY_NEEDED 0x4 /* log was recovered */ -#define XLOG_IO_ERROR 0x8 /* log hit an I/O error, and being - shutdown */ -#define XLOG_TAIL_WARN 0x10 /* log tail verify warning issued */ - -typedef __uint32_t xlog_tid_t; - -#ifdef __KERNEL__ /* * Below are states for covering allocation transactions. * By covering, we mean changing the h_tail_lsn in the last on-disk @@ -223,7 +149,6 @@ typedef __uint32_t xlog_tid_t; #define XLOG_COVER_OPS 5 - /* Ticket reservation region accounting */ #define XLOG_TIC_LEN_MAX 15 @@ -258,64 +183,6 @@ typedef struct xlog_ticket { xlog_res_t t_res_arr[XLOG_TIC_LEN_MAX]; /* array of res : 8 * 15 */ } xlog_ticket_t; -#endif - - -typedef struct xlog_op_header { - __be32 oh_tid; /* transaction id of operation : 4 b */ - __be32 oh_len; /* bytes in data region : 4 b */ - __u8 oh_clientid; /* who sent me this : 1 b */ - __u8 oh_flags; /* : 1 b */ - __u16 oh_res2; /* 32 bit align : 2 b */ -} xlog_op_header_t; - - -/* valid values for h_fmt */ -#define XLOG_FMT_UNKNOWN 0 -#define XLOG_FMT_LINUX_LE 1 -#define XLOG_FMT_LINUX_BE 2 -#define XLOG_FMT_IRIX_BE 3 - -/* our fmt */ -#ifdef XFS_NATIVE_HOST -#define XLOG_FMT XLOG_FMT_LINUX_BE -#else -#define XLOG_FMT XLOG_FMT_LINUX_LE -#endif - -typedef struct xlog_rec_header { - __be32 h_magicno; /* log record (LR) identifier : 4 */ - __be32 h_cycle; /* write cycle of log : 4 */ - __be32 h_version; /* LR version : 4 */ - __be32 h_len; /* len in bytes; should be 64-bit aligned: 4 */ - __be64 h_lsn; /* lsn of this LR : 8 */ - __be64 h_tail_lsn; /* lsn of 1st LR w/ buffers not committed: 8 */ - __le32 h_crc; /* crc of log record : 4 */ - __be32 h_prev_block; /* block number to previous LR : 4 */ - __be32 h_num_logops; /* number of log operations in this LR : 4 */ - __be32 h_cycle_data[XLOG_HEADER_CYCLE_SIZE / BBSIZE]; - /* new fields */ - __be32 h_fmt; /* format of log record : 4 */ - uuid_t h_fs_uuid; /* uuid of FS : 16 */ - __be32 h_size; /* iclog size : 4 */ -} xlog_rec_header_t; - -typedef struct xlog_rec_ext_header { - __be32 xh_cycle; /* write cycle of log : 4 */ - __be32 xh_cycle_data[XLOG_HEADER_CYCLE_SIZE / BBSIZE]; /* : 256 */ -} xlog_rec_ext_header_t; - -#ifdef __KERNEL__ - -/* - * Quite misnamed, because this union lays out the actual on-disk log buffer. - */ -typedef union xlog_in_core2 { - xlog_rec_header_t hic_header; - xlog_rec_ext_header_t hic_xheader; - char hic_sector[XLOG_HEADER_SIZE]; -} xlog_in_core_2_t; - /* * - A log record header is 512 bytes. There is plenty of room to grow the * xlog_rec_header_t into the reserved space. @@ -411,14 +278,17 @@ struct xfs_cil { struct xlog *xc_log; struct list_head xc_cil; spinlock_t xc_cil_lock; + + struct rw_semaphore xc_ctx_lock ____cacheline_aligned_in_smp; struct xfs_cil_ctx *xc_ctx; - struct rw_semaphore xc_ctx_lock; + + spinlock_t xc_push_lock ____cacheline_aligned_in_smp; + xfs_lsn_t xc_push_seq; struct list_head xc_committing; wait_queue_head_t xc_commit_wait; xfs_lsn_t xc_current_sequence; struct work_struct xc_push_work; - xfs_lsn_t xc_push_seq; -}; +} ____cacheline_aligned_in_smp; /* * The amount of log space we allow the CIL to aggregate is difficult to size. @@ -686,6 +556,5 @@ static inline void xlog_wait(wait_queue_head_t *wq, spinlock_t *lock) schedule(); remove_wait_queue(wq, &wait); } -#endif /* __KERNEL__ */ #endif /* __XFS_LOG_PRIV_H__ */ diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c index 7681b19..7c0c1fd 100644 --- a/fs/xfs/xfs_log_recover.c +++ b/fs/xfs/xfs_log_recover.c @@ -17,7 +17,7 @@ */ #include "xfs.h" #include "xfs_fs.h" -#include "xfs_types.h" +#include "xfs_format.h" #include "xfs_bit.h" #include "xfs_log.h" #include "xfs_inum.h" @@ -41,7 +41,6 @@ #include "xfs_extfree_item.h" #include "xfs_trans_priv.h" #include "xfs_quota.h" -#include "xfs_utils.h" #include "xfs_cksum.h" #include "xfs_trace.h" #include "xfs_icache.h" @@ -51,10 +50,12 @@ #include "xfs_symlink.h" #include "xfs_da_btree.h" #include "xfs_dir2_format.h" -#include "xfs_dir2_priv.h" +#include "xfs_dir2.h" #include "xfs_attr_leaf.h" #include "xfs_attr_remote.h" +#define BLK_AVG(blk1, blk2) ((blk1+blk2) >> 1) + STATIC int xlog_find_zeroed( struct xlog *, @@ -607,7 +608,7 @@ out: /* * Head is defined to be the point of the log where the next log write - * write could go. This means that incomplete LR writes at the end are + * could go. This means that incomplete LR writes at the end are * eliminated when calculating the head. We aren't guaranteed that previous * LR have complete transactions. We only know that a cycle number of * current cycle number -1 won't be present in the log if we start writing @@ -963,6 +964,7 @@ xlog_find_tail( } if (!found) { xfs_warn(log->l_mp, "%s: couldn't find sync record", __func__); + xlog_put_bp(bp); ASSERT(0); return XFS_ERROR(EIO); } @@ -1144,7 +1146,8 @@ xlog_find_zeroed( */ xfs_warn(log->l_mp, "Log inconsistent or not a log (last==0, first!=1)"); - return XFS_ERROR(EINVAL); + error = XFS_ERROR(EINVAL); + goto bp_err; } /* we have a partially zeroed log */ @@ -1766,19 +1769,11 @@ xlog_recover_buffer_pass1( /* * Check to see whether the buffer being recovered has a corresponding - * entry in the buffer cancel record table. If it does then return 1 - * so that it will be cancelled, otherwise return 0. If the buffer is - * actually a buffer cancel item (XFS_BLF_CANCEL is set), then decrement - * the refcount on the entry in the table and remove it from the table - * if this is the last reference. - * - * We remove the cancel record from the table when we encounter its - * last occurrence in the log so that if the same buffer is re-used - * again after its last cancellation we actually replay the changes - * made at that point. + * entry in the buffer cancel record table. If it is, return the cancel + * buffer structure to the caller. */ -STATIC int -xlog_check_buffer_cancelled( +STATIC struct xfs_buf_cancel * +xlog_peek_buffer_cancelled( struct xlog *log, xfs_daddr_t blkno, uint len, @@ -1787,22 +1782,16 @@ xlog_check_buffer_cancelled( struct list_head *bucket; struct xfs_buf_cancel *bcp; - if (log->l_buf_cancel_table == NULL) { - /* - * There is nothing in the table built in pass one, - * so this buffer must not be cancelled. - */ + if (!log->l_buf_cancel_table) { + /* empty table means no cancelled buffers in the log */ ASSERT(!(flags & XFS_BLF_CANCEL)); - return 0; + return NULL; } - /* - * Search for an entry in the cancel table that matches our buffer. - */ bucket = XLOG_BUF_CANCEL_BUCKET(log, blkno); list_for_each_entry(bcp, bucket, bc_list) { if (bcp->bc_blkno == blkno && bcp->bc_len == len) - goto found; + return bcp; } /* @@ -1810,9 +1799,32 @@ xlog_check_buffer_cancelled( * that the buffer is NOT cancelled. */ ASSERT(!(flags & XFS_BLF_CANCEL)); - return 0; + return NULL; +} + +/* + * If the buffer is being cancelled then return 1 so that it will be cancelled, + * otherwise return 0. If the buffer is actually a buffer cancel item + * (XFS_BLF_CANCEL is set), then decrement the refcount on the entry in the + * table and remove it from the table if this is the last reference. + * + * We remove the cancel record from the table when we encounter its last + * occurrence in the log so that if the same buffer is re-used again after its + * last cancellation we actually replay the changes made at that point. + */ +STATIC int +xlog_check_buffer_cancelled( + struct xlog *log, + xfs_daddr_t blkno, + uint len, + ushort flags) +{ + struct xfs_buf_cancel *bcp; + + bcp = xlog_peek_buffer_cancelled(log, blkno, len, flags); + if (!bcp) + return 0; -found: /* * We've go a match, so return 1 so that the recovery of this buffer * is cancelled. If this buffer is actually a buffer cancel log @@ -1947,6 +1959,104 @@ xlog_recover_do_inode_buffer( } /* + * V5 filesystems know the age of the buffer on disk being recovered. We can + * have newer objects on disk than we are replaying, and so for these cases we + * don't want to replay the current change as that will make the buffer contents + * temporarily invalid on disk. + * + * The magic number might not match the buffer type we are going to recover + * (e.g. reallocated blocks), so we ignore the xfs_buf_log_format flags. Hence + * extract the LSN of the existing object in the buffer based on it's current + * magic number. If we don't recognise the magic number in the buffer, then + * return a LSN of -1 so that the caller knows it was an unrecognised block and + * so can recover the buffer. + */ +static xfs_lsn_t +xlog_recover_get_buf_lsn( + struct xfs_mount *mp, + struct xfs_buf *bp) +{ + __uint32_t magic32; + __uint16_t magic16; + __uint16_t magicda; + void *blk = bp->b_addr; + + /* v4 filesystems always recover immediately */ + if (!xfs_sb_version_hascrc(&mp->m_sb)) + goto recover_immediately; + + magic32 = be32_to_cpu(*(__be32 *)blk); + switch (magic32) { + case XFS_ABTB_CRC_MAGIC: + case XFS_ABTC_CRC_MAGIC: + case XFS_ABTB_MAGIC: + case XFS_ABTC_MAGIC: + case XFS_IBT_CRC_MAGIC: + case XFS_IBT_MAGIC: + return be64_to_cpu( + ((struct xfs_btree_block *)blk)->bb_u.s.bb_lsn); + case XFS_BMAP_CRC_MAGIC: + case XFS_BMAP_MAGIC: + return be64_to_cpu( + ((struct xfs_btree_block *)blk)->bb_u.l.bb_lsn); + case XFS_AGF_MAGIC: + return be64_to_cpu(((struct xfs_agf *)blk)->agf_lsn); + case XFS_AGFL_MAGIC: + return be64_to_cpu(((struct xfs_agfl *)blk)->agfl_lsn); + case XFS_AGI_MAGIC: + return be64_to_cpu(((struct xfs_agi *)blk)->agi_lsn); + case XFS_SYMLINK_MAGIC: + return be64_to_cpu(((struct xfs_dsymlink_hdr *)blk)->sl_lsn); + case XFS_DIR3_BLOCK_MAGIC: + case XFS_DIR3_DATA_MAGIC: + case XFS_DIR3_FREE_MAGIC: + return be64_to_cpu(((struct xfs_dir3_blk_hdr *)blk)->lsn); + case XFS_ATTR3_RMT_MAGIC: + return be64_to_cpu(((struct xfs_attr3_rmt_hdr *)blk)->rm_lsn); + case XFS_SB_MAGIC: + return be64_to_cpu(((struct xfs_sb *)blk)->sb_lsn); + default: + break; + } + + magicda = be16_to_cpu(((struct xfs_da_blkinfo *)blk)->magic); + switch (magicda) { + case XFS_DIR3_LEAF1_MAGIC: + case XFS_DIR3_LEAFN_MAGIC: + case XFS_DA3_NODE_MAGIC: + return be64_to_cpu(((struct xfs_da3_blkinfo *)blk)->lsn); + default: + break; + } + + /* + * We do individual object checks on dquot and inode buffers as they + * have their own individual LSN records. Also, we could have a stale + * buffer here, so we have to at least recognise these buffer types. + * + * A notd complexity here is inode unlinked list processing - it logs + * the inode directly in the buffer, but we don't know which inodes have + * been modified, and there is no global buffer LSN. Hence we need to + * recover all inode buffer types immediately. This problem will be + * fixed by logical logging of the unlinked list modifications. + */ + magic16 = be16_to_cpu(*(__be16 *)blk); + switch (magic16) { + case XFS_DQUOT_MAGIC: + case XFS_DINODE_MAGIC: + goto recover_immediately; + default: + break; + } + + /* unknown buffer contents, recover immediately */ + +recover_immediately: + return (xfs_lsn_t)-1; + +} + +/* * Validate the recovered buffer is of the correct type and attach the * appropriate buffer operations to them for writeback. Magic numbers are in a * few places: @@ -1955,7 +2065,7 @@ xlog_recover_do_inode_buffer( * inside a struct xfs_da_blkinfo at the start of the buffer. */ static void -xlog_recovery_validate_buf_type( +xlog_recover_validate_buf_type( struct xfs_mount *mp, struct xfs_buf *bp, xfs_buf_log_format_t *buf_f) @@ -2234,7 +2344,7 @@ xlog_recover_do_reg_buffer( * just avoid the verification stage for non-crc filesystems */ if (xfs_sb_version_hascrc(&mp->m_sb)) - xlog_recovery_validate_buf_type(mp, bp, buf_f); + xlog_recover_validate_buf_type(mp, bp, buf_f); } /* @@ -2366,7 +2476,7 @@ xfs_qm_dqcheck( /* * Perform a dquot buffer recovery. - * Simple algorithm: if we have found a QUOTAOFF logitem of the same type + * Simple algorithm: if we have found a QUOTAOFF log item of the same type * (ie. USR or GRP), then just toss this buffer away; don't recover it. * Else, treat it as a regular buffer and do recovery. */ @@ -2425,20 +2535,22 @@ xlog_recover_do_dquot_buffer( * over the log during recovery. During the first we build a table of * those buffers which have been cancelled, and during the second we * only replay those buffers which do not have corresponding cancel - * records in the table. See xlog_recover_do_buffer_pass[1,2] above + * records in the table. See xlog_recover_buffer_pass[1,2] above * for more details on the implementation of the table of cancel records. */ STATIC int xlog_recover_buffer_pass2( struct xlog *log, struct list_head *buffer_list, - struct xlog_recover_item *item) + struct xlog_recover_item *item, + xfs_lsn_t current_lsn) { xfs_buf_log_format_t *buf_f = item->ri_buf[0].i_addr; xfs_mount_t *mp = log->l_mp; xfs_buf_t *bp; int error; uint buf_flags; + xfs_lsn_t lsn; /* * In this pass we only want to recover all the buffers which have @@ -2463,10 +2575,17 @@ xlog_recover_buffer_pass2( error = bp->b_error; if (error) { xfs_buf_ioerror_alert(bp, "xlog_recover_do..(read#1)"); - xfs_buf_relse(bp); - return error; + goto out_release; } + /* + * recover the buffer only if we get an LSN from it and it's less than + * the lsn of the transaction we are replaying. + */ + lsn = xlog_recover_get_buf_lsn(mp, bp); + if (lsn && lsn != -1 && XFS_LSN_CMP(lsn, current_lsn) >= 0) + goto out_release; + if (buf_f->blf_flags & XFS_BLF_INODE_BUF) { error = xlog_recover_do_inode_buffer(mp, item, bp, buf_f); } else if (buf_f->blf_flags & @@ -2476,7 +2595,7 @@ xlog_recover_buffer_pass2( xlog_recover_do_reg_buffer(mp, item, bp, buf_f); } if (error) - return XFS_ERROR(error); + goto out_release; /* * Perform delayed write on the buffer. Asynchronous writes will be @@ -2505,6 +2624,7 @@ xlog_recover_buffer_pass2( xfs_buf_delwri_queue(bp, buffer_list); } +out_release: xfs_buf_relse(bp); return error; } @@ -2513,7 +2633,8 @@ STATIC int xlog_recover_inode_pass2( struct xlog *log, struct list_head *buffer_list, - struct xlog_recover_item *item) + struct xlog_recover_item *item, + xfs_lsn_t current_lsn) { xfs_inode_log_format_t *in_f; xfs_mount_t *mp = log->l_mp; @@ -2593,6 +2714,20 @@ xlog_recover_inode_pass2( } /* + * If the inode has an LSN in it, recover the inode only if it's less + * than the lsn of the transaction we are replaying. + */ + if (dip->di_version >= 3) { + xfs_lsn_t lsn = be64_to_cpu(dip->di_lsn); + + if (lsn && lsn != -1 && XFS_LSN_CMP(lsn, current_lsn) >= 0) { + trace_xfs_log_recover_inode_skip(log, in_f); + error = 0; + goto out_release; + } + } + + /* * di_flushiter is only valid for v1/2 inodes. All changes for v3 inodes * are transactional and if ordering is necessary we can determine that * more accurately by the LSN field in the V3 inode core. Don't trust @@ -2781,6 +2916,8 @@ write_inode_buffer: ASSERT(bp->b_target->bt_mount == mp); bp->b_iodone = xlog_recover_iodone; xfs_buf_delwri_queue(bp, buffer_list); + +out_release: xfs_buf_relse(bp); error: if (need_free) @@ -2822,7 +2959,8 @@ STATIC int xlog_recover_dquot_pass2( struct xlog *log, struct list_head *buffer_list, - struct xlog_recover_item *item) + struct xlog_recover_item *item, + xfs_lsn_t current_lsn) { xfs_mount_t *mp = log->l_mp; xfs_buf_t *bp; @@ -2896,6 +3034,19 @@ xlog_recover_dquot_pass2( return XFS_ERROR(EIO); } + /* + * If the dquot has an LSN in it, recover the dquot only if it's less + * than the lsn of the transaction we are replaying. + */ + if (xfs_sb_version_hascrc(&mp->m_sb)) { + struct xfs_dqblk *dqb = (struct xfs_dqblk *)ddq; + xfs_lsn_t lsn = be64_to_cpu(dqb->dd_lsn); + + if (lsn && lsn != -1 && XFS_LSN_CMP(lsn, current_lsn) >= 0) { + goto out_release; + } + } + memcpy(ddq, recddq, item->ri_buf[1].i_len); if (xfs_sb_version_hascrc(&mp->m_sb)) { xfs_update_cksum((char *)ddq, sizeof(struct xfs_dqblk), @@ -2906,9 +3057,10 @@ xlog_recover_dquot_pass2( ASSERT(bp->b_target->bt_mount == mp); bp->b_iodone = xlog_recover_iodone; xfs_buf_delwri_queue(bp, buffer_list); - xfs_buf_relse(bp); - return (0); +out_release: + xfs_buf_relse(bp); + return 0; } /* @@ -3116,6 +3268,106 @@ xlog_recover_free_trans( kmem_free(trans); } +STATIC void +xlog_recover_buffer_ra_pass2( + struct xlog *log, + struct xlog_recover_item *item) +{ + struct xfs_buf_log_format *buf_f = item->ri_buf[0].i_addr; + struct xfs_mount *mp = log->l_mp; + + if (xlog_peek_buffer_cancelled(log, buf_f->blf_blkno, + buf_f->blf_len, buf_f->blf_flags)) { + return; + } + + xfs_buf_readahead(mp->m_ddev_targp, buf_f->blf_blkno, + buf_f->blf_len, NULL); +} + +STATIC void +xlog_recover_inode_ra_pass2( + struct xlog *log, + struct xlog_recover_item *item) +{ + struct xfs_inode_log_format ilf_buf; + struct xfs_inode_log_format *ilfp; + struct xfs_mount *mp = log->l_mp; + int error; + + if (item->ri_buf[0].i_len == sizeof(struct xfs_inode_log_format)) { + ilfp = item->ri_buf[0].i_addr; + } else { + ilfp = &ilf_buf; + memset(ilfp, 0, sizeof(*ilfp)); + error = xfs_inode_item_format_convert(&item->ri_buf[0], ilfp); + if (error) + return; + } + + if (xlog_peek_buffer_cancelled(log, ilfp->ilf_blkno, ilfp->ilf_len, 0)) + return; + + xfs_buf_readahead(mp->m_ddev_targp, ilfp->ilf_blkno, + ilfp->ilf_len, &xfs_inode_buf_ra_ops); +} + +STATIC void +xlog_recover_dquot_ra_pass2( + struct xlog *log, + struct xlog_recover_item *item) +{ + struct xfs_mount *mp = log->l_mp; + struct xfs_disk_dquot *recddq; + struct xfs_dq_logformat *dq_f; + uint type; + + + if (mp->m_qflags == 0) + return; + + recddq = item->ri_buf[1].i_addr; + if (recddq == NULL) + return; + if (item->ri_buf[1].i_len < sizeof(struct xfs_disk_dquot)) + return; + + type = recddq->d_flags & (XFS_DQ_USER | XFS_DQ_PROJ | XFS_DQ_GROUP); + ASSERT(type); + if (log->l_quotaoffs_flag & type) + return; + + dq_f = item->ri_buf[0].i_addr; + ASSERT(dq_f); + ASSERT(dq_f->qlf_len == 1); + + xfs_buf_readahead(mp->m_ddev_targp, dq_f->qlf_blkno, + XFS_FSB_TO_BB(mp, dq_f->qlf_len), NULL); +} + +STATIC void +xlog_recover_ra_pass2( + struct xlog *log, + struct xlog_recover_item *item) +{ + switch (ITEM_TYPE(item)) { + case XFS_LI_BUF: + xlog_recover_buffer_ra_pass2(log, item); + break; + case XFS_LI_INODE: + xlog_recover_inode_ra_pass2(log, item); + break; + case XFS_LI_DQUOT: + xlog_recover_dquot_ra_pass2(log, item); + break; + case XFS_LI_EFI: + case XFS_LI_EFD: + case XFS_LI_QUOTAOFF: + default: + break; + } +} + STATIC int xlog_recover_commit_pass1( struct xlog *log, @@ -3155,15 +3407,18 @@ xlog_recover_commit_pass2( switch (ITEM_TYPE(item)) { case XFS_LI_BUF: - return xlog_recover_buffer_pass2(log, buffer_list, item); + return xlog_recover_buffer_pass2(log, buffer_list, item, + trans->r_lsn); case XFS_LI_INODE: - return xlog_recover_inode_pass2(log, buffer_list, item); + return xlog_recover_inode_pass2(log, buffer_list, item, + trans->r_lsn); case XFS_LI_EFI: return xlog_recover_efi_pass2(log, item, trans->r_lsn); case XFS_LI_EFD: return xlog_recover_efd_pass2(log, item); case XFS_LI_DQUOT: - return xlog_recover_dquot_pass2(log, buffer_list, item); + return xlog_recover_dquot_pass2(log, buffer_list, item, + trans->r_lsn); case XFS_LI_ICREATE: return xlog_recover_do_icreate_pass2(log, buffer_list, item); case XFS_LI_QUOTAOFF: @@ -3177,6 +3432,26 @@ xlog_recover_commit_pass2( } } +STATIC int +xlog_recover_items_pass2( + struct xlog *log, + struct xlog_recover *trans, + struct list_head *buffer_list, + struct list_head *item_list) +{ + struct xlog_recover_item *item; + int error = 0; + + list_for_each_entry(item, item_list, ri_list) { + error = xlog_recover_commit_pass2(log, trans, + buffer_list, item); + if (error) + return error; + } + + return error; +} + /* * Perform the transaction. * @@ -3189,9 +3464,16 @@ xlog_recover_commit_trans( struct xlog_recover *trans, int pass) { - int error = 0, error2; - xlog_recover_item_t *item; - LIST_HEAD (buffer_list); + int error = 0; + int error2; + int items_queued = 0; + struct xlog_recover_item *item; + struct xlog_recover_item *next; + LIST_HEAD (buffer_list); + LIST_HEAD (ra_list); + LIST_HEAD (done_list); + + #define XLOG_RECOVER_COMMIT_QUEUE_MAX 100 hlist_del(&trans->r_list); @@ -3199,14 +3481,22 @@ xlog_recover_commit_trans( if (error) return error; - list_for_each_entry(item, &trans->r_itemq, ri_list) { + list_for_each_entry_safe(item, next, &trans->r_itemq, ri_list) { switch (pass) { case XLOG_RECOVER_PASS1: error = xlog_recover_commit_pass1(log, trans, item); break; case XLOG_RECOVER_PASS2: - error = xlog_recover_commit_pass2(log, trans, - &buffer_list, item); + xlog_recover_ra_pass2(log, item); + list_move_tail(&item->ri_list, &ra_list); + items_queued++; + if (items_queued >= XLOG_RECOVER_COMMIT_QUEUE_MAX) { + error = xlog_recover_items_pass2(log, trans, + &buffer_list, &ra_list); + list_splice_tail_init(&ra_list, &done_list); + items_queued = 0; + } + break; default: ASSERT(0); @@ -3216,9 +3506,19 @@ xlog_recover_commit_trans( goto out; } +out: + if (!list_empty(&ra_list)) { + if (!error) + error = xlog_recover_items_pass2(log, trans, + &buffer_list, &ra_list); + list_splice_tail_init(&ra_list, &done_list); + } + + if (!list_empty(&done_list)) + list_splice_init(&done_list, &trans->r_itemq); + xlog_recover_free_trans(trans); -out: error2 = xfs_buf_delwri_submit(&buffer_list); return error ? error : error2; } @@ -3376,7 +3676,7 @@ xlog_recover_process_efi( } tp = xfs_trans_alloc(mp, 0); - error = xfs_trans_reserve(tp, 0, XFS_ITRUNCATE_LOG_RES(mp), 0, 0, 0); + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_itruncate, 0, 0); if (error) goto abort_error; efdp = xfs_trans_get_efd(tp, efip, efip->efi_format.efi_nextents); @@ -3482,8 +3782,7 @@ xlog_recover_clear_agi_bucket( int error; tp = xfs_trans_alloc(mp, XFS_TRANS_CLEAR_AGI_BUCKET); - error = xfs_trans_reserve(tp, 0, XFS_CLEAR_AGI_BUCKET_LOG_RES(mp), - 0, 0, 0); + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_clearagi, 0, 0); if (error) goto out_abort; diff --git a/fs/xfs/xfs_log_rlimit.c b/fs/xfs/xfs_log_rlimit.c new file mode 100644 index 0000000..bbcec0b --- /dev/null +++ b/fs/xfs/xfs_log_rlimit.c @@ -0,0 +1,147 @@ +/* + * Copyright (c) 2013 Jie Liu. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include "xfs.h" +#include "xfs_fs.h" +#include "xfs_log.h" +#include "xfs_trans.h" +#include "xfs_ag.h" +#include "xfs_sb.h" +#include "xfs_mount.h" +#include "xfs_trans_space.h" +#include "xfs_bmap_btree.h" +#include "xfs_inode.h" +#include "xfs_da_btree.h" +#include "xfs_attr_leaf.h" + +/* + * Calculate the maximum length in bytes that would be required for a local + * attribute value as large attributes out of line are not logged. + */ +STATIC int +xfs_log_calc_max_attrsetm_res( + struct xfs_mount *mp) +{ + int size; + int nblks; + + size = xfs_attr_leaf_entsize_local_max(mp->m_sb.sb_blocksize) - + MAXNAMELEN - 1; + nblks = XFS_DAENTER_SPACE_RES(mp, XFS_ATTR_FORK); + nblks += XFS_B_TO_FSB(mp, size); + nblks += XFS_NEXTENTADD_SPACE_RES(mp, size, XFS_ATTR_FORK); + + return M_RES(mp)->tr_attrsetm.tr_logres + + M_RES(mp)->tr_attrsetrt.tr_logres * nblks; +} + +/* + * Iterate over the log space reservation table to figure out and return + * the maximum one in terms of the pre-calculated values which were done + * at mount time. + */ +STATIC void +xfs_log_get_max_trans_res( + struct xfs_mount *mp, + struct xfs_trans_res *max_resp) +{ + struct xfs_trans_res *resp; + struct xfs_trans_res *end_resp; + int log_space = 0; + int attr_space; + + attr_space = xfs_log_calc_max_attrsetm_res(mp); + + resp = (struct xfs_trans_res *)M_RES(mp); + end_resp = (struct xfs_trans_res *)(M_RES(mp) + 1); + for (; resp < end_resp; resp++) { + int tmp = resp->tr_logcount > 1 ? + resp->tr_logres * resp->tr_logcount : + resp->tr_logres; + if (log_space < tmp) { + log_space = tmp; + *max_resp = *resp; /* struct copy */ + } + } + + if (attr_space > log_space) { + *max_resp = M_RES(mp)->tr_attrsetm; /* struct copy */ + max_resp->tr_logres = attr_space; + } +} + +/* + * Calculate the minimum valid log size for the given superblock configuration. + * Used to calculate the minimum log size at mkfs time, and to determine if + * the log is large enough or not at mount time. Returns the minimum size in + * filesystem block size units. + */ +int +xfs_log_calc_minimum_size( + struct xfs_mount *mp) +{ + struct xfs_trans_res tres = {0}; + int max_logres; + int min_logblks = 0; + int lsunit = 0; + + xfs_log_get_max_trans_res(mp, &tres); + + max_logres = xfs_log_calc_unit_res(mp, tres.tr_logres); + if (tres.tr_logcount > 1) + max_logres *= tres.tr_logcount; + + if (xfs_sb_version_haslogv2(&mp->m_sb) && mp->m_sb.sb_logsunit > 1) + lsunit = BTOBB(mp->m_sb.sb_logsunit); + + /* + * Two factors should be taken into account for calculating the minimum + * log space. + * 1) The fundamental limitation is that no single transaction can be + * larger than half size of the log. + * + * From mkfs.xfs, this is considered by the XFS_MIN_LOG_FACTOR + * define, which is set to 3. That means we can definitely fit + * maximally sized 2 transactions in the log. We'll use this same + * value here. + * + * 2) If the lsunit option is specified, a transaction requires 2 LSU + * for the reservation because there are two log writes that can + * require padding - the transaction data and the commit record which + * are written separately and both can require padding to the LSU. + * Consider that we can have an active CIL reservation holding 2*LSU, + * but the CIL is not over a push threshold, in this case, if we + * don't have enough log space for at one new transaction, which + * includes another 2*LSU in the reservation, we will run into dead + * loop situation in log space grant procedure. i.e. + * xlog_grant_head_wait(). + * + * Hence the log size needs to be able to contain two maximally sized + * and padded transactions, which is (2 * (2 * LSU + maxlres)). + * + * Also, the log size should be a multiple of the log stripe unit, round + * it up to lsunit boundary if lsunit is specified. + */ + if (lsunit) { + min_logblks = roundup_64(BTOBB(max_logres), lsunit) + + 2 * lsunit; + } else + min_logblks = BTOBB(max_logres) + 2 * BBSIZE; + min_logblks *= XFS_MIN_LOG_FACTOR; + + return XFS_BB_TO_FSB(mp, min_logblks); +} diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c index 2b0ba35..5dcc680 100644 --- a/fs/xfs/xfs_mount.c +++ b/fs/xfs/xfs_mount.c @@ -17,7 +17,7 @@ */ #include "xfs.h" #include "xfs_fs.h" -#include "xfs_types.h" +#include "xfs_format.h" #include "xfs_bit.h" #include "xfs_log.h" #include "xfs_inum.h" @@ -25,8 +25,10 @@ #include "xfs_trans_priv.h" #include "xfs_sb.h" #include "xfs_ag.h" -#include "xfs_dir2.h" #include "xfs_mount.h" +#include "xfs_da_btree.h" +#include "xfs_dir2_format.h" +#include "xfs_dir2.h" #include "xfs_bmap_btree.h" #include "xfs_alloc_btree.h" #include "xfs_ialloc_btree.h" @@ -40,7 +42,6 @@ #include "xfs_error.h" #include "xfs_quota.h" #include "xfs_fsops.h" -#include "xfs_utils.h" #include "xfs_trace.h" #include "xfs_icache.h" #include "xfs_cksum.h" @@ -59,69 +60,6 @@ STATIC void xfs_icsb_disable_counter(xfs_mount_t *, xfs_sb_field_t); #define xfs_icsb_balance_counter_locked(mp, a, b) do { } while (0) #endif -static const struct { - short offset; - short type; /* 0 = integer - * 1 = binary / string (no translation) - */ -} xfs_sb_info[] = { - { offsetof(xfs_sb_t, sb_magicnum), 0 }, - { offsetof(xfs_sb_t, sb_blocksize), 0 }, - { offsetof(xfs_sb_t, sb_dblocks), 0 }, - { offsetof(xfs_sb_t, sb_rblocks), 0 }, - { offsetof(xfs_sb_t, sb_rextents), 0 }, - { offsetof(xfs_sb_t, sb_uuid), 1 }, - { offsetof(xfs_sb_t, sb_logstart), 0 }, - { offsetof(xfs_sb_t, sb_rootino), 0 }, - { offsetof(xfs_sb_t, sb_rbmino), 0 }, - { offsetof(xfs_sb_t, sb_rsumino), 0 }, - { offsetof(xfs_sb_t, sb_rextsize), 0 }, - { offsetof(xfs_sb_t, sb_agblocks), 0 }, - { offsetof(xfs_sb_t, sb_agcount), 0 }, - { offsetof(xfs_sb_t, sb_rbmblocks), 0 }, - { offsetof(xfs_sb_t, sb_logblocks), 0 }, - { offsetof(xfs_sb_t, sb_versionnum), 0 }, - { offsetof(xfs_sb_t, sb_sectsize), 0 }, - { offsetof(xfs_sb_t, sb_inodesize), 0 }, - { offsetof(xfs_sb_t, sb_inopblock), 0 }, - { offsetof(xfs_sb_t, sb_fname[0]), 1 }, - { offsetof(xfs_sb_t, sb_blocklog), 0 }, - { offsetof(xfs_sb_t, sb_sectlog), 0 }, - { offsetof(xfs_sb_t, sb_inodelog), 0 }, - { offsetof(xfs_sb_t, sb_inopblog), 0 }, - { offsetof(xfs_sb_t, sb_agblklog), 0 }, - { offsetof(xfs_sb_t, sb_rextslog), 0 }, - { offsetof(xfs_sb_t, sb_inprogress), 0 }, - { offsetof(xfs_sb_t, sb_imax_pct), 0 }, - { offsetof(xfs_sb_t, sb_icount), 0 }, - { offsetof(xfs_sb_t, sb_ifree), 0 }, - { offsetof(xfs_sb_t, sb_fdblocks), 0 }, - { offsetof(xfs_sb_t, sb_frextents), 0 }, - { offsetof(xfs_sb_t, sb_uquotino), 0 }, - { offsetof(xfs_sb_t, sb_gquotino), 0 }, - { offsetof(xfs_sb_t, sb_qflags), 0 }, - { offsetof(xfs_sb_t, sb_flags), 0 }, - { offsetof(xfs_sb_t, sb_shared_vn), 0 }, - { offsetof(xfs_sb_t, sb_inoalignmt), 0 }, - { offsetof(xfs_sb_t, sb_unit), 0 }, - { offsetof(xfs_sb_t, sb_width), 0 }, - { offsetof(xfs_sb_t, sb_dirblklog), 0 }, - { offsetof(xfs_sb_t, sb_logsectlog), 0 }, - { offsetof(xfs_sb_t, sb_logsectsize),0 }, - { offsetof(xfs_sb_t, sb_logsunit), 0 }, - { offsetof(xfs_sb_t, sb_features2), 0 }, - { offsetof(xfs_sb_t, sb_bad_features2), 0 }, - { offsetof(xfs_sb_t, sb_features_compat), 0 }, - { offsetof(xfs_sb_t, sb_features_ro_compat), 0 }, - { offsetof(xfs_sb_t, sb_features_incompat), 0 }, - { offsetof(xfs_sb_t, sb_features_log_incompat), 0 }, - { offsetof(xfs_sb_t, sb_crc), 0 }, - { offsetof(xfs_sb_t, sb_pad), 0 }, - { offsetof(xfs_sb_t, sb_pquotino), 0 }, - { offsetof(xfs_sb_t, sb_lsn), 0 }, - { sizeof(xfs_sb_t), 0 } -}; - static DEFINE_MUTEX(xfs_uuid_table_mutex); static int xfs_uuid_table_size; static uuid_t *xfs_uuid_table; @@ -197,64 +135,6 @@ xfs_uuid_unmount( } -/* - * Reference counting access wrappers to the perag structures. - * Because we never free per-ag structures, the only thing we - * have to protect against changes is the tree structure itself. - */ -struct xfs_perag * -xfs_perag_get(struct xfs_mount *mp, xfs_agnumber_t agno) -{ - struct xfs_perag *pag; - int ref = 0; - - rcu_read_lock(); - pag = radix_tree_lookup(&mp->m_perag_tree, agno); - if (pag) { - ASSERT(atomic_read(&pag->pag_ref) >= 0); - ref = atomic_inc_return(&pag->pag_ref); - } - rcu_read_unlock(); - trace_xfs_perag_get(mp, agno, ref, _RET_IP_); - return pag; -} - -/* - * search from @first to find the next perag with the given tag set. - */ -struct xfs_perag * -xfs_perag_get_tag( - struct xfs_mount *mp, - xfs_agnumber_t first, - int tag) -{ - struct xfs_perag *pag; - int found; - int ref; - - rcu_read_lock(); - found = radix_tree_gang_lookup_tag(&mp->m_perag_tree, - (void **)&pag, first, 1, tag); - if (found <= 0) { - rcu_read_unlock(); - return NULL; - } - ref = atomic_inc_return(&pag->pag_ref); - rcu_read_unlock(); - trace_xfs_perag_get_tag(mp, pag->pag_agno, ref, _RET_IP_); - return pag; -} - -void -xfs_perag_put(struct xfs_perag *pag) -{ - int ref; - - ASSERT(atomic_read(&pag->pag_ref) > 0); - ref = atomic_dec_return(&pag->pag_ref); - trace_xfs_perag_put(pag->pag_mount, pag->pag_agno, ref, _RET_IP_); -} - STATIC void __xfs_free_perag( struct rcu_head *head) @@ -307,184 +187,6 @@ xfs_sb_validate_fsb_count( return 0; } -/* - * Check the validity of the SB found. - */ -STATIC int -xfs_mount_validate_sb( - xfs_mount_t *mp, - xfs_sb_t *sbp, - bool check_inprogress, - bool check_version) -{ - - /* - * If the log device and data device have the - * same device number, the log is internal. - * Consequently, the sb_logstart should be non-zero. If - * we have a zero sb_logstart in this case, we may be trying to mount - * a volume filesystem in a non-volume manner. - */ - if (sbp->sb_magicnum != XFS_SB_MAGIC) { - xfs_warn(mp, "bad magic number"); - return XFS_ERROR(EWRONGFS); - } - - - if (!xfs_sb_good_version(sbp)) { - xfs_warn(mp, "bad version"); - return XFS_ERROR(EWRONGFS); - } - - if ((sbp->sb_qflags & (XFS_OQUOTA_ENFD | XFS_OQUOTA_CHKD)) && - (sbp->sb_qflags & (XFS_PQUOTA_ENFD | XFS_GQUOTA_ENFD | - XFS_PQUOTA_CHKD | XFS_GQUOTA_CHKD))) { - xfs_notice(mp, -"Super block has XFS_OQUOTA bits along with XFS_PQUOTA and/or XFS_GQUOTA bits.\n"); - return XFS_ERROR(EFSCORRUPTED); - } - - /* - * Version 5 superblock feature mask validation. Reject combinations the - * kernel cannot support up front before checking anything else. For - * write validation, we don't need to check feature masks. - */ - if (check_version && XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5) { - xfs_alert(mp, -"Version 5 superblock detected. This kernel has EXPERIMENTAL support enabled!\n" -"Use of these features in this kernel is at your own risk!"); - - if (xfs_sb_has_compat_feature(sbp, - XFS_SB_FEAT_COMPAT_UNKNOWN)) { - xfs_warn(mp, -"Superblock has unknown compatible features (0x%x) enabled.\n" -"Using a more recent kernel is recommended.", - (sbp->sb_features_compat & - XFS_SB_FEAT_COMPAT_UNKNOWN)); - } - - if (xfs_sb_has_ro_compat_feature(sbp, - XFS_SB_FEAT_RO_COMPAT_UNKNOWN)) { - xfs_alert(mp, -"Superblock has unknown read-only compatible features (0x%x) enabled.", - (sbp->sb_features_ro_compat & - XFS_SB_FEAT_RO_COMPAT_UNKNOWN)); - if (!(mp->m_flags & XFS_MOUNT_RDONLY)) { - xfs_warn(mp, -"Attempted to mount read-only compatible filesystem read-write.\n" -"Filesystem can only be safely mounted read only."); - return XFS_ERROR(EINVAL); - } - } - if (xfs_sb_has_incompat_feature(sbp, - XFS_SB_FEAT_INCOMPAT_UNKNOWN)) { - xfs_warn(mp, -"Superblock has unknown incompatible features (0x%x) enabled.\n" -"Filesystem can not be safely mounted by this kernel.", - (sbp->sb_features_incompat & - XFS_SB_FEAT_INCOMPAT_UNKNOWN)); - return XFS_ERROR(EINVAL); - } - } - - if (unlikely( - sbp->sb_logstart == 0 && mp->m_logdev_targp == mp->m_ddev_targp)) { - xfs_warn(mp, - "filesystem is marked as having an external log; " - "specify logdev on the mount command line."); - return XFS_ERROR(EINVAL); - } - - if (unlikely( - sbp->sb_logstart != 0 && mp->m_logdev_targp != mp->m_ddev_targp)) { - xfs_warn(mp, - "filesystem is marked as having an internal log; " - "do not specify logdev on the mount command line."); - return XFS_ERROR(EINVAL); - } - - /* - * More sanity checking. Most of these were stolen directly from - * xfs_repair. - */ - if (unlikely( - sbp->sb_agcount <= 0 || - sbp->sb_sectsize < XFS_MIN_SECTORSIZE || - sbp->sb_sectsize > XFS_MAX_SECTORSIZE || - sbp->sb_sectlog < XFS_MIN_SECTORSIZE_LOG || - sbp->sb_sectlog > XFS_MAX_SECTORSIZE_LOG || - sbp->sb_sectsize != (1 << sbp->sb_sectlog) || - sbp->sb_blocksize < XFS_MIN_BLOCKSIZE || - sbp->sb_blocksize > XFS_MAX_BLOCKSIZE || - sbp->sb_blocklog < XFS_MIN_BLOCKSIZE_LOG || - sbp->sb_blocklog > XFS_MAX_BLOCKSIZE_LOG || - sbp->sb_blocksize != (1 << sbp->sb_blocklog) || - sbp->sb_inodesize < XFS_DINODE_MIN_SIZE || - sbp->sb_inodesize > XFS_DINODE_MAX_SIZE || - sbp->sb_inodelog < XFS_DINODE_MIN_LOG || - sbp->sb_inodelog > XFS_DINODE_MAX_LOG || - sbp->sb_inodesize != (1 << sbp->sb_inodelog) || - (sbp->sb_blocklog - sbp->sb_inodelog != sbp->sb_inopblog) || - (sbp->sb_rextsize * sbp->sb_blocksize > XFS_MAX_RTEXTSIZE) || - (sbp->sb_rextsize * sbp->sb_blocksize < XFS_MIN_RTEXTSIZE) || - (sbp->sb_imax_pct > 100 /* zero sb_imax_pct is valid */) || - sbp->sb_dblocks == 0 || - sbp->sb_dblocks > XFS_MAX_DBLOCKS(sbp) || - sbp->sb_dblocks < XFS_MIN_DBLOCKS(sbp))) { - XFS_CORRUPTION_ERROR("SB sanity check failed", - XFS_ERRLEVEL_LOW, mp, sbp); - return XFS_ERROR(EFSCORRUPTED); - } - - /* - * Until this is fixed only page-sized or smaller data blocks work. - */ - if (unlikely(sbp->sb_blocksize > PAGE_SIZE)) { - xfs_warn(mp, - "File system with blocksize %d bytes. " - "Only pagesize (%ld) or less will currently work.", - sbp->sb_blocksize, PAGE_SIZE); - return XFS_ERROR(ENOSYS); - } - - /* - * Currently only very few inode sizes are supported. - */ - switch (sbp->sb_inodesize) { - case 256: - case 512: - case 1024: - case 2048: - break; - default: - xfs_warn(mp, "inode size of %d bytes not supported", - sbp->sb_inodesize); - return XFS_ERROR(ENOSYS); - } - - if (xfs_sb_validate_fsb_count(sbp, sbp->sb_dblocks) || - xfs_sb_validate_fsb_count(sbp, sbp->sb_rblocks)) { - xfs_warn(mp, - "file system too large to be mounted on this system."); - return XFS_ERROR(EFBIG); - } - - if (check_inprogress && sbp->sb_inprogress) { - xfs_warn(mp, "Offline file system operation in progress!"); - return XFS_ERROR(EFSCORRUPTED); - } - - /* - * Version 1 directory format has never worked on Linux. - */ - if (unlikely(!xfs_sb_version_hasdirv2(sbp))) { - xfs_warn(mp, "file system using version 1 directory format"); - return XFS_ERROR(ENOSYS); - } - - return 0; -} - int xfs_initialize_perag( xfs_mount_t *mp, @@ -569,283 +271,15 @@ out_unwind: return error; } -static void -xfs_sb_quota_from_disk(struct xfs_sb *sbp) -{ - if (sbp->sb_qflags & XFS_OQUOTA_ENFD) - sbp->sb_qflags |= (sbp->sb_qflags & XFS_PQUOTA_ACCT) ? - XFS_PQUOTA_ENFD : XFS_GQUOTA_ENFD; - if (sbp->sb_qflags & XFS_OQUOTA_CHKD) - sbp->sb_qflags |= (sbp->sb_qflags & XFS_PQUOTA_ACCT) ? - XFS_PQUOTA_CHKD : XFS_GQUOTA_CHKD; - sbp->sb_qflags &= ~(XFS_OQUOTA_ENFD | XFS_OQUOTA_CHKD); -} - -void -xfs_sb_from_disk( - struct xfs_sb *to, - xfs_dsb_t *from) -{ - to->sb_magicnum = be32_to_cpu(from->sb_magicnum); - to->sb_blocksize = be32_to_cpu(from->sb_blocksize); - to->sb_dblocks = be64_to_cpu(from->sb_dblocks); - to->sb_rblocks = be64_to_cpu(from->sb_rblocks); - to->sb_rextents = be64_to_cpu(from->sb_rextents); - memcpy(&to->sb_uuid, &from->sb_uuid, sizeof(to->sb_uuid)); - to->sb_logstart = be64_to_cpu(from->sb_logstart); - to->sb_rootino = be64_to_cpu(from->sb_rootino); - to->sb_rbmino = be64_to_cpu(from->sb_rbmino); - to->sb_rsumino = be64_to_cpu(from->sb_rsumino); - to->sb_rextsize = be32_to_cpu(from->sb_rextsize); - to->sb_agblocks = be32_to_cpu(from->sb_agblocks); - to->sb_agcount = be32_to_cpu(from->sb_agcount); - to->sb_rbmblocks = be32_to_cpu(from->sb_rbmblocks); - to->sb_logblocks = be32_to_cpu(from->sb_logblocks); - to->sb_versionnum = be16_to_cpu(from->sb_versionnum); - to->sb_sectsize = be16_to_cpu(from->sb_sectsize); - to->sb_inodesize = be16_to_cpu(from->sb_inodesize); - to->sb_inopblock = be16_to_cpu(from->sb_inopblock); - memcpy(&to->sb_fname, &from->sb_fname, sizeof(to->sb_fname)); - to->sb_blocklog = from->sb_blocklog; - to->sb_sectlog = from->sb_sectlog; - to->sb_inodelog = from->sb_inodelog; - to->sb_inopblog = from->sb_inopblog; - to->sb_agblklog = from->sb_agblklog; - to->sb_rextslog = from->sb_rextslog; - to->sb_inprogress = from->sb_inprogress; - to->sb_imax_pct = from->sb_imax_pct; - to->sb_icount = be64_to_cpu(from->sb_icount); - to->sb_ifree = be64_to_cpu(from->sb_ifree); - to->sb_fdblocks = be64_to_cpu(from->sb_fdblocks); - to->sb_frextents = be64_to_cpu(from->sb_frextents); - to->sb_uquotino = be64_to_cpu(from->sb_uquotino); - to->sb_gquotino = be64_to_cpu(from->sb_gquotino); - to->sb_qflags = be16_to_cpu(from->sb_qflags); - to->sb_flags = from->sb_flags; - to->sb_shared_vn = from->sb_shared_vn; - to->sb_inoalignmt = be32_to_cpu(from->sb_inoalignmt); - to->sb_unit = be32_to_cpu(from->sb_unit); - to->sb_width = be32_to_cpu(from->sb_width); - to->sb_dirblklog = from->sb_dirblklog; - to->sb_logsectlog = from->sb_logsectlog; - to->sb_logsectsize = be16_to_cpu(from->sb_logsectsize); - to->sb_logsunit = be32_to_cpu(from->sb_logsunit); - to->sb_features2 = be32_to_cpu(from->sb_features2); - to->sb_bad_features2 = be32_to_cpu(from->sb_bad_features2); - to->sb_features_compat = be32_to_cpu(from->sb_features_compat); - to->sb_features_ro_compat = be32_to_cpu(from->sb_features_ro_compat); - to->sb_features_incompat = be32_to_cpu(from->sb_features_incompat); - to->sb_features_log_incompat = - be32_to_cpu(from->sb_features_log_incompat); - to->sb_pad = 0; - to->sb_pquotino = be64_to_cpu(from->sb_pquotino); - to->sb_lsn = be64_to_cpu(from->sb_lsn); -} - -static inline void -xfs_sb_quota_to_disk( - xfs_dsb_t *to, - xfs_sb_t *from, - __int64_t *fields) -{ - __uint16_t qflags = from->sb_qflags; - - if (*fields & XFS_SB_QFLAGS) { - /* - * The in-core version of sb_qflags do not have - * XFS_OQUOTA_* flags, whereas the on-disk version - * does. So, convert incore XFS_{PG}QUOTA_* flags - * to on-disk XFS_OQUOTA_* flags. - */ - qflags &= ~(XFS_PQUOTA_ENFD | XFS_PQUOTA_CHKD | - XFS_GQUOTA_ENFD | XFS_GQUOTA_CHKD); - - if (from->sb_qflags & - (XFS_PQUOTA_ENFD | XFS_GQUOTA_ENFD)) - qflags |= XFS_OQUOTA_ENFD; - if (from->sb_qflags & - (XFS_PQUOTA_CHKD | XFS_GQUOTA_CHKD)) - qflags |= XFS_OQUOTA_CHKD; - to->sb_qflags = cpu_to_be16(qflags); - *fields &= ~XFS_SB_QFLAGS; - } -} - -/* - * Copy in core superblock to ondisk one. - * - * The fields argument is mask of superblock fields to copy. - */ -void -xfs_sb_to_disk( - xfs_dsb_t *to, - xfs_sb_t *from, - __int64_t fields) -{ - xfs_caddr_t to_ptr = (xfs_caddr_t)to; - xfs_caddr_t from_ptr = (xfs_caddr_t)from; - xfs_sb_field_t f; - int first; - int size; - - ASSERT(fields); - if (!fields) - return; - - xfs_sb_quota_to_disk(to, from, &fields); - while (fields) { - f = (xfs_sb_field_t)xfs_lowbit64((__uint64_t)fields); - first = xfs_sb_info[f].offset; - size = xfs_sb_info[f + 1].offset - first; - - ASSERT(xfs_sb_info[f].type == 0 || xfs_sb_info[f].type == 1); - - if (size == 1 || xfs_sb_info[f].type == 1) { - memcpy(to_ptr + first, from_ptr + first, size); - } else { - switch (size) { - case 2: - *(__be16 *)(to_ptr + first) = - cpu_to_be16(*(__u16 *)(from_ptr + first)); - break; - case 4: - *(__be32 *)(to_ptr + first) = - cpu_to_be32(*(__u32 *)(from_ptr + first)); - break; - case 8: - *(__be64 *)(to_ptr + first) = - cpu_to_be64(*(__u64 *)(from_ptr + first)); - break; - default: - ASSERT(0); - } - } - - fields &= ~(1LL << f); - } -} - -static int -xfs_sb_verify( - struct xfs_buf *bp, - bool check_version) -{ - struct xfs_mount *mp = bp->b_target->bt_mount; - struct xfs_sb sb; - - xfs_sb_from_disk(&sb, XFS_BUF_TO_SBP(bp)); - - /* - * Only check the in progress field for the primary superblock as - * mkfs.xfs doesn't clear it from secondary superblocks. - */ - return xfs_mount_validate_sb(mp, &sb, bp->b_bn == XFS_SB_DADDR, - check_version); -} - -/* - * If the superblock has the CRC feature bit set or the CRC field is non-null, - * check that the CRC is valid. We check the CRC field is non-null because a - * single bit error could clear the feature bit and unused parts of the - * superblock are supposed to be zero. Hence a non-null crc field indicates that - * we've potentially lost a feature bit and we should check it anyway. - */ -static void -xfs_sb_read_verify( - struct xfs_buf *bp) -{ - struct xfs_mount *mp = bp->b_target->bt_mount; - struct xfs_dsb *dsb = XFS_BUF_TO_SBP(bp); - int error; - - /* - * open code the version check to avoid needing to convert the entire - * superblock from disk order just to check the version number - */ - if (dsb->sb_magicnum == cpu_to_be32(XFS_SB_MAGIC) && - (((be16_to_cpu(dsb->sb_versionnum) & XFS_SB_VERSION_NUMBITS) == - XFS_SB_VERSION_5) || - dsb->sb_crc != 0)) { - - if (!xfs_verify_cksum(bp->b_addr, be16_to_cpu(dsb->sb_sectsize), - offsetof(struct xfs_sb, sb_crc))) { - error = EFSCORRUPTED; - goto out_error; - } - } - error = xfs_sb_verify(bp, true); - -out_error: - if (error) { - XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr); - xfs_buf_ioerror(bp, error); - } -} - -/* - * We may be probed for a filesystem match, so we may not want to emit - * messages when the superblock buffer is not actually an XFS superblock. - * If we find an XFS superblock, the run a normal, noisy mount because we are - * really going to mount it and want to know about errors. - */ -static void -xfs_sb_quiet_read_verify( - struct xfs_buf *bp) -{ - struct xfs_dsb *dsb = XFS_BUF_TO_SBP(bp); - - - if (dsb->sb_magicnum == cpu_to_be32(XFS_SB_MAGIC)) { - /* XFS filesystem, verify noisily! */ - xfs_sb_read_verify(bp); - return; - } - /* quietly fail */ - xfs_buf_ioerror(bp, EWRONGFS); -} - -static void -xfs_sb_write_verify( - struct xfs_buf *bp) -{ - struct xfs_mount *mp = bp->b_target->bt_mount; - struct xfs_buf_log_item *bip = bp->b_fspriv; - int error; - - error = xfs_sb_verify(bp, false); - if (error) { - XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr); - xfs_buf_ioerror(bp, error); - return; - } - - if (!xfs_sb_version_hascrc(&mp->m_sb)) - return; - - if (bip) - XFS_BUF_TO_SBP(bp)->sb_lsn = cpu_to_be64(bip->bli_item.li_lsn); - - xfs_update_cksum(bp->b_addr, BBTOB(bp->b_length), - offsetof(struct xfs_sb, sb_crc)); -} - -const struct xfs_buf_ops xfs_sb_buf_ops = { - .verify_read = xfs_sb_read_verify, - .verify_write = xfs_sb_write_verify, -}; - -static const struct xfs_buf_ops xfs_sb_quiet_buf_ops = { - .verify_read = xfs_sb_quiet_read_verify, - .verify_write = xfs_sb_write_verify, -}; - /* * xfs_readsb * * Does the initial read of the superblock. */ int -xfs_readsb(xfs_mount_t *mp, int flags) +xfs_readsb( + struct xfs_mount *mp, + int flags) { unsigned int sector_size; struct xfs_buf *bp; @@ -884,8 +318,8 @@ reread: * Initialize the mount structure from the superblock. */ xfs_sb_from_disk(&mp->m_sb, XFS_BUF_TO_SBP(bp)); - xfs_sb_quota_from_disk(&mp->m_sb); + /* * We must be able to do sector-sized and sector-aligned IO. */ @@ -922,107 +356,6 @@ release_buf: return error; } - -/* - * xfs_mount_common - * - * Mount initialization code establishing various mount - * fields from the superblock associated with the given - * mount structure - */ -STATIC void -xfs_mount_common(xfs_mount_t *mp, xfs_sb_t *sbp) -{ - mp->m_agfrotor = mp->m_agirotor = 0; - spin_lock_init(&mp->m_agirotor_lock); - mp->m_maxagi = mp->m_sb.sb_agcount; - mp->m_blkbit_log = sbp->sb_blocklog + XFS_NBBYLOG; - mp->m_blkbb_log = sbp->sb_blocklog - BBSHIFT; - mp->m_sectbb_log = sbp->sb_sectlog - BBSHIFT; - mp->m_agno_log = xfs_highbit32(sbp->sb_agcount - 1) + 1; - mp->m_agino_log = sbp->sb_inopblog + sbp->sb_agblklog; - mp->m_blockmask = sbp->sb_blocksize - 1; - mp->m_blockwsize = sbp->sb_blocksize >> XFS_WORDLOG; - mp->m_blockwmask = mp->m_blockwsize - 1; - - mp->m_alloc_mxr[0] = xfs_allocbt_maxrecs(mp, sbp->sb_blocksize, 1); - mp->m_alloc_mxr[1] = xfs_allocbt_maxrecs(mp, sbp->sb_blocksize, 0); - mp->m_alloc_mnr[0] = mp->m_alloc_mxr[0] / 2; - mp->m_alloc_mnr[1] = mp->m_alloc_mxr[1] / 2; - - mp->m_inobt_mxr[0] = xfs_inobt_maxrecs(mp, sbp->sb_blocksize, 1); - mp->m_inobt_mxr[1] = xfs_inobt_maxrecs(mp, sbp->sb_blocksize, 0); - mp->m_inobt_mnr[0] = mp->m_inobt_mxr[0] / 2; - mp->m_inobt_mnr[1] = mp->m_inobt_mxr[1] / 2; - - mp->m_bmap_dmxr[0] = xfs_bmbt_maxrecs(mp, sbp->sb_blocksize, 1); - mp->m_bmap_dmxr[1] = xfs_bmbt_maxrecs(mp, sbp->sb_blocksize, 0); - mp->m_bmap_dmnr[0] = mp->m_bmap_dmxr[0] / 2; - mp->m_bmap_dmnr[1] = mp->m_bmap_dmxr[1] / 2; - - mp->m_bsize = XFS_FSB_TO_BB(mp, 1); - mp->m_ialloc_inos = (int)MAX((__uint16_t)XFS_INODES_PER_CHUNK, - sbp->sb_inopblock); - mp->m_ialloc_blks = mp->m_ialloc_inos >> sbp->sb_inopblog; -} - -/* - * xfs_initialize_perag_data - * - * Read in each per-ag structure so we can count up the number of - * allocated inodes, free inodes and used filesystem blocks as this - * information is no longer persistent in the superblock. Once we have - * this information, write it into the in-core superblock structure. - */ -STATIC int -xfs_initialize_perag_data(xfs_mount_t *mp, xfs_agnumber_t agcount) -{ - xfs_agnumber_t index; - xfs_perag_t *pag; - xfs_sb_t *sbp = &mp->m_sb; - uint64_t ifree = 0; - uint64_t ialloc = 0; - uint64_t bfree = 0; - uint64_t bfreelst = 0; - uint64_t btree = 0; - int error; - - for (index = 0; index < agcount; index++) { - /* - * read the agf, then the agi. This gets us - * all the information we need and populates the - * per-ag structures for us. - */ - error = xfs_alloc_pagf_init(mp, NULL, index, 0); - if (error) - return error; - - error = xfs_ialloc_pagi_init(mp, NULL, index); - if (error) - return error; - pag = xfs_perag_get(mp, index); - ifree += pag->pagi_freecount; - ialloc += pag->pagi_count; - bfree += pag->pagf_freeblks; - bfreelst += pag->pagf_flcount; - btree += pag->pagf_btreeblks; - xfs_perag_put(pag); - } - /* - * Overwrite incore superblock counters with just-read data - */ - spin_lock(&mp->m_sb_lock); - sbp->sb_ifree = ifree; - sbp->sb_icount = ialloc; - sbp->sb_fdblocks = bfree + bfreelst + btree; - spin_unlock(&mp->m_sb_lock); - - /* Fixup the per-cpu counters as well. */ - xfs_icsb_reinit_counters(mp); - - return 0; -} - /* * Update alignment values based on mount options and sb values */ @@ -1194,7 +527,7 @@ xfs_set_inoalignment(xfs_mount_t *mp) } /* - * Check that the data (and log if separate) are an ok size. + * Check that the data (and log if separate) is an ok size. */ STATIC int xfs_check_sizes(xfs_mount_t *mp) @@ -1264,8 +597,7 @@ xfs_mount_reset_sbqflags( return 0; tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SBCHANGE); - error = xfs_trans_reserve(tp, 0, XFS_QM_SBCHANGE_LOG_RES(mp), - 0, 0, XFS_DEFAULT_LOG_COUNT); + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_qm_sbchange, 0, 0); if (error) { xfs_trans_cancel(tp, 0); xfs_alert(mp, "%s: Superblock update failed!", __func__); @@ -1315,7 +647,7 @@ xfs_mountfs( uint quotaflags = 0; int error = 0; - xfs_mount_common(mp, sbp); + xfs_sb_mount_common(mp, sbp); /* * Check for a mismatched features2 values. Older kernels @@ -1400,7 +732,7 @@ xfs_mountfs( xfs_set_inoalignment(mp); /* - * Check that the data (and log if separate) are an ok size. + * Check that the data (and log if separate) is an ok size. */ error = xfs_check_sizes(mp); if (error) @@ -1738,8 +1070,7 @@ xfs_log_sbcount(xfs_mount_t *mp) return 0; tp = _xfs_trans_alloc(mp, XFS_TRANS_SB_COUNT, KM_SLEEP); - error = xfs_trans_reserve(tp, 0, XFS_SB_LOG_RES(mp), 0, 0, - XFS_DEFAULT_LOG_COUNT); + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_sb, 0, 0); if (error) { xfs_trans_cancel(tp, 0); return error; @@ -1752,49 +1083,7 @@ xfs_log_sbcount(xfs_mount_t *mp) } /* - * xfs_mod_sb() can be used to copy arbitrary changes to the - * in-core superblock into the superblock buffer to be logged. - * It does not provide the higher level of locking that is - * needed to protect the in-core superblock from concurrent - * access. - */ -void -xfs_mod_sb(xfs_trans_t *tp, __int64_t fields) -{ - xfs_buf_t *bp; - int first; - int last; - xfs_mount_t *mp; - xfs_sb_field_t f; - - ASSERT(fields); - if (!fields) - return; - mp = tp->t_mountp; - bp = xfs_trans_getsb(tp, mp, 0); - first = sizeof(xfs_sb_t); - last = 0; - - /* translate/copy */ - - xfs_sb_to_disk(XFS_BUF_TO_SBP(bp), &mp->m_sb, fields); - - /* find modified range */ - f = (xfs_sb_field_t)xfs_highbit64((__uint64_t)fields); - ASSERT((1LL << f) & XFS_SB_MOD_BITS); - last = xfs_sb_info[f + 1].offset - 1; - - f = (xfs_sb_field_t)xfs_lowbit64((__uint64_t)fields); - ASSERT((1LL << f) & XFS_SB_MOD_BITS); - first = xfs_sb_info[f].offset; - - xfs_trans_buf_set_type(tp, bp, XFS_BLFT_SB_BUF); - xfs_trans_log_buf(tp, bp, first, last); -} - - -/* - * xfs_mod_incore_sb_unlocked() is a utility routine common used to apply + * xfs_mod_incore_sb_unlocked() is a utility routine commonly used to apply * a delta to a specified field in the in-core superblock. Simply * switch on the field indicated and apply the delta to that field. * Fields are not allowed to dip below zero, so if the delta would @@ -2101,8 +1390,7 @@ xfs_mount_log_sb( XFS_SB_VERSIONNUM)); tp = xfs_trans_alloc(mp, XFS_TRANS_SB_UNIT); - error = xfs_trans_reserve(tp, 0, XFS_SB_LOG_RES(mp), 0, 0, - XFS_DEFAULT_LOG_COUNT); + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_sb, 0, 0); if (error) { xfs_trans_cancel(tp, 0); return error; @@ -2260,12 +1548,6 @@ xfs_icsb_init_counters( if (mp->m_sb_cnts == NULL) return -ENOMEM; -#ifdef CONFIG_HOTPLUG_CPU - mp->m_icsb_notifier.notifier_call = xfs_icsb_cpu_notify; - mp->m_icsb_notifier.priority = 0; - register_hotcpu_notifier(&mp->m_icsb_notifier); -#endif /* CONFIG_HOTPLUG_CPU */ - for_each_online_cpu(i) { cntp = (xfs_icsb_cnts_t *)per_cpu_ptr(mp->m_sb_cnts, i); memset(cntp, 0, sizeof(xfs_icsb_cnts_t)); @@ -2278,6 +1560,13 @@ xfs_icsb_init_counters( * initial balance kicks us off correctly */ mp->m_icsb_counters = -1; + +#ifdef CONFIG_HOTPLUG_CPU + mp->m_icsb_notifier.notifier_call = xfs_icsb_cpu_notify; + mp->m_icsb_notifier.priority = 0; + register_hotcpu_notifier(&mp->m_icsb_notifier); +#endif /* CONFIG_HOTPLUG_CPU */ + return 0; } diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h index 4e374d4..1fa0584 100644 --- a/fs/xfs/xfs_mount.h +++ b/fs/xfs/xfs_mount.h @@ -18,45 +18,7 @@ #ifndef __XFS_MOUNT_H__ #define __XFS_MOUNT_H__ -typedef struct xfs_trans_reservations { - uint tr_write; /* extent alloc trans */ - uint tr_itruncate; /* truncate trans */ - uint tr_rename; /* rename trans */ - uint tr_link; /* link trans */ - uint tr_remove; /* unlink trans */ - uint tr_symlink; /* symlink trans */ - uint tr_create; /* create trans */ - uint tr_mkdir; /* mkdir trans */ - uint tr_ifree; /* inode free trans */ - uint tr_ichange; /* inode update trans */ - uint tr_growdata; /* fs data section grow trans */ - uint tr_swrite; /* sync write inode trans */ - uint tr_addafork; /* cvt inode to attributed trans */ - uint tr_writeid; /* write setuid/setgid file */ - uint tr_attrinval; /* attr fork buffer invalidation */ - uint tr_attrsetm; /* set/create an attribute at mount time */ - uint tr_attrsetrt; /* set/create an attribute at runtime */ - uint tr_attrrm; /* remove an attribute */ - uint tr_clearagi; /* clear bad agi unlinked ino bucket */ - uint tr_growrtalloc; /* grow realtime allocations */ - uint tr_growrtzero; /* grow realtime zeroing */ - uint tr_growrtfree; /* grow realtime freeing */ - uint tr_qm_sbchange; /* change quota flags */ - uint tr_qm_setqlim; /* adjust quota limits */ - uint tr_qm_dqalloc; /* allocate quota on disk */ - uint tr_qm_quotaoff; /* turn quota off */ - uint tr_qm_equotaoff;/* end of turn quota off */ - uint tr_sb; /* modify superblock */ -} xfs_trans_reservations_t; - -#ifndef __KERNEL__ - -#define xfs_daddr_to_agno(mp,d) \ - ((xfs_agnumber_t)(XFS_BB_TO_FSBT(mp, d) / (mp)->m_sb.sb_agblocks)) -#define xfs_daddr_to_agbno(mp,d) \ - ((xfs_agblock_t)(XFS_BB_TO_FSBT(mp, d) % (mp)->m_sb.sb_agblocks)) - -#else /* __KERNEL__ */ +#ifdef __KERNEL__ struct xlog; struct xfs_inode; @@ -174,7 +136,7 @@ typedef struct xfs_mount { int m_ialloc_blks; /* blocks in inode allocation */ int m_inoalign_mask;/* mask sb_inoalignmt if used */ uint m_qflags; /* quota status flags */ - xfs_trans_reservations_t m_reservations;/* precomputed res values */ + struct xfs_trans_resv m_resv; /* precomputed res values */ __uint64_t m_maxicount; /* maximum inode count */ __uint64_t m_resblks; /* total reserved blocks */ __uint64_t m_resblks_avail;/* available reserved blocks */ @@ -330,14 +292,6 @@ xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d) } /* - * perag get/put wrappers for ref counting - */ -struct xfs_perag *xfs_perag_get(struct xfs_mount *mp, xfs_agnumber_t agno); -struct xfs_perag *xfs_perag_get_tag(struct xfs_mount *mp, xfs_agnumber_t agno, - int tag); -void xfs_perag_put(struct xfs_perag *pag); - -/* * Per-cpu superblock locking functions */ #ifdef HAVE_PERCPU_SB @@ -366,9 +320,63 @@ typedef struct xfs_mod_sb { int64_t msb_delta; /* Change to make to specified field */ } xfs_mod_sb_t; +/* + * Per-ag incore structure, copies of information in agf and agi, to improve the + * performance of allocation group selection. This is defined for the kernel + * only, and hence is defined here instead of in xfs_ag.h. You need the struct + * xfs_mount to be defined to look up a xfs_perag anyway (via mp->m_perag_tree), + * so this doesn't introduce any strange header file dependencies. + */ +typedef struct xfs_perag { + struct xfs_mount *pag_mount; /* owner filesystem */ + xfs_agnumber_t pag_agno; /* AG this structure belongs to */ + atomic_t pag_ref; /* perag reference count */ + char pagf_init; /* this agf's entry is initialized */ + char pagi_init; /* this agi's entry is initialized */ + char pagf_metadata; /* the agf is preferred to be metadata */ + char pagi_inodeok; /* The agi is ok for inodes */ + __uint8_t pagf_levels[XFS_BTNUM_AGF]; + /* # of levels in bno & cnt btree */ + __uint32_t pagf_flcount; /* count of blocks in freelist */ + xfs_extlen_t pagf_freeblks; /* total free blocks */ + xfs_extlen_t pagf_longest; /* longest free space */ + __uint32_t pagf_btreeblks; /* # of blocks held in AGF btrees */ + xfs_agino_t pagi_freecount; /* number of free inodes */ + xfs_agino_t pagi_count; /* number of allocated inodes */ + + /* + * Inode allocation search lookup optimisation. + * If the pagino matches, the search for new inodes + * doesn't need to search the near ones again straight away + */ + xfs_agino_t pagl_pagino; + xfs_agino_t pagl_leftrec; + xfs_agino_t pagl_rightrec; + spinlock_t pagb_lock; /* lock for pagb_tree */ + struct rb_root pagb_tree; /* ordered tree of busy extents */ + + atomic_t pagf_fstrms; /* # of filestreams active in this AG */ + + spinlock_t pag_ici_lock; /* incore inode cache lock */ + struct radix_tree_root pag_ici_root; /* incore inode cache root */ + int pag_ici_reclaimable; /* reclaimable inodes */ + struct mutex pag_ici_reclaim_lock; /* serialisation point */ + unsigned long pag_ici_reclaim_cursor; /* reclaim restart point */ + + /* buffer cache index */ + spinlock_t pag_buf_lock; /* lock for pag_buf_tree */ + struct rb_root pag_buf_tree; /* ordered tree of active buffers */ + + /* for rcu-safe freeing */ + struct rcu_head rcu_head; + int pagb_count; /* pagb slots in use */ +} xfs_perag_t; + extern int xfs_log_sbcount(xfs_mount_t *); extern __uint64_t xfs_default_resblks(xfs_mount_t *mp); extern int xfs_mountfs(xfs_mount_t *mp); +extern int xfs_initialize_perag(xfs_mount_t *mp, xfs_agnumber_t agcount, + xfs_agnumber_t *maxagi); extern void xfs_unmountfs(xfs_mount_t *); extern int xfs_mod_incore_sb(xfs_mount_t *, xfs_sb_field_t, int64_t, int); @@ -387,13 +395,4 @@ extern void xfs_set_low_space_thresholds(struct xfs_mount *); #endif /* __KERNEL__ */ -extern void xfs_sb_calc_crc(struct xfs_buf *); -extern void xfs_mod_sb(struct xfs_trans *, __int64_t); -extern int xfs_initialize_perag(struct xfs_mount *, xfs_agnumber_t, - xfs_agnumber_t *); -extern void xfs_sb_from_disk(struct xfs_sb *, struct xfs_dsb *); -extern void xfs_sb_to_disk(struct xfs_dsb *, struct xfs_sb *, __int64_t); - -extern const struct xfs_buf_ops xfs_sb_buf_ops; - #endif /* __XFS_MOUNT_H__ */ diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c index d320794..6218a0a 100644 --- a/fs/xfs/xfs_qm.c +++ b/fs/xfs/xfs_qm.c @@ -17,6 +17,7 @@ */ #include "xfs.h" #include "xfs_fs.h" +#include "xfs_format.h" #include "xfs_bit.h" #include "xfs_log.h" #include "xfs_trans.h" @@ -37,7 +38,6 @@ #include "xfs_attr.h" #include "xfs_buf_item.h" #include "xfs_trans_space.h" -#include "xfs_utils.h" #include "xfs_qm.h" #include "xfs_trace.h" #include "xfs_icache.h" @@ -834,21 +834,52 @@ xfs_qm_qino_alloc( int error; int committed; + *ip = NULL; + /* + * With superblock that doesn't have separate pquotino, we + * share an inode between gquota and pquota. If the on-disk + * superblock has GQUOTA and the filesystem is now mounted + * with PQUOTA, just use sb_gquotino for sb_pquotino and + * vice-versa. + */ + if (!xfs_sb_version_has_pquotino(&mp->m_sb) && + (flags & (XFS_QMOPT_PQUOTA|XFS_QMOPT_GQUOTA))) { + xfs_ino_t ino = NULLFSINO; + + if ((flags & XFS_QMOPT_PQUOTA) && + (mp->m_sb.sb_gquotino != NULLFSINO)) { + ino = mp->m_sb.sb_gquotino; + ASSERT(mp->m_sb.sb_pquotino == NULLFSINO); + } else if ((flags & XFS_QMOPT_GQUOTA) && + (mp->m_sb.sb_pquotino != NULLFSINO)) { + ino = mp->m_sb.sb_pquotino; + ASSERT(mp->m_sb.sb_gquotino == NULLFSINO); + } + if (ino != NULLFSINO) { + error = xfs_iget(mp, NULL, ino, 0, 0, ip); + if (error) + return error; + mp->m_sb.sb_gquotino = NULLFSINO; + mp->m_sb.sb_pquotino = NULLFSINO; + } + } + tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QINOCREATE); - if ((error = xfs_trans_reserve(tp, - XFS_QM_QINOCREATE_SPACE_RES(mp), - XFS_CREATE_LOG_RES(mp), 0, - XFS_TRANS_PERM_LOG_RES, - XFS_CREATE_LOG_COUNT))) { + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_create, + XFS_QM_QINOCREATE_SPACE_RES(mp), 0); + if (error) { xfs_trans_cancel(tp, 0); return error; } - error = xfs_dir_ialloc(&tp, NULL, S_IFREG, 1, 0, 0, 1, ip, &committed); - if (error) { - xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES | - XFS_TRANS_ABORT); - return error; + if (!*ip) { + error = xfs_dir_ialloc(&tp, NULL, S_IFREG, 1, 0, 0, 1, ip, + &committed); + if (error) { + xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES | + XFS_TRANS_ABORT); + return error; + } } /* @@ -860,21 +891,25 @@ xfs_qm_qino_alloc( if (flags & XFS_QMOPT_SBVERSION) { ASSERT(!xfs_sb_version_hasquota(&mp->m_sb)); ASSERT((sbfields & (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | - XFS_SB_GQUOTINO | XFS_SB_QFLAGS)) == - (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | - XFS_SB_GQUOTINO | XFS_SB_QFLAGS)); + XFS_SB_GQUOTINO | XFS_SB_PQUOTINO | XFS_SB_QFLAGS)) == + (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | + XFS_SB_GQUOTINO | XFS_SB_PQUOTINO | + XFS_SB_QFLAGS)); xfs_sb_version_addquota(&mp->m_sb); mp->m_sb.sb_uquotino = NULLFSINO; mp->m_sb.sb_gquotino = NULLFSINO; + mp->m_sb.sb_pquotino = NULLFSINO; - /* qflags will get updated _after_ quotacheck */ - mp->m_sb.sb_qflags = 0; + /* qflags will get updated fully _after_ quotacheck */ + mp->m_sb.sb_qflags = mp->m_qflags & XFS_ALL_QUOTA_ACCT; } if (flags & XFS_QMOPT_UQUOTA) mp->m_sb.sb_uquotino = (*ip)->i_ino; - else + else if (flags & XFS_QMOPT_GQUOTA) mp->m_sb.sb_gquotino = (*ip)->i_ino; + else + mp->m_sb.sb_pquotino = (*ip)->i_ino; spin_unlock(&mp->m_sb_lock); xfs_mod_sb(tp, sbfields); @@ -1484,11 +1519,10 @@ xfs_qm_init_quotainos( if (error) goto error_rele; } - /* XXX: Use gquotino for now */ if (XFS_IS_PQUOTA_ON(mp) && - mp->m_sb.sb_gquotino != NULLFSINO) { - ASSERT(mp->m_sb.sb_gquotino > 0); - error = xfs_iget(mp, NULL, mp->m_sb.sb_gquotino, + mp->m_sb.sb_pquotino != NULLFSINO) { + ASSERT(mp->m_sb.sb_pquotino > 0); + error = xfs_iget(mp, NULL, mp->m_sb.sb_pquotino, 0, 0, &pip); if (error) goto error_rele; @@ -1496,7 +1530,8 @@ xfs_qm_init_quotainos( } else { flags |= XFS_QMOPT_SBVERSION; sbflags |= (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | - XFS_SB_GQUOTINO | XFS_SB_QFLAGS); + XFS_SB_GQUOTINO | XFS_SB_PQUOTINO | + XFS_SB_QFLAGS); } /* @@ -1524,9 +1559,8 @@ xfs_qm_init_quotainos( flags &= ~XFS_QMOPT_SBVERSION; } if (XFS_IS_PQUOTA_ON(mp) && pip == NULL) { - /* XXX: Use XFS_SB_GQUOTINO for now */ error = xfs_qm_qino_alloc(mp, &pip, - sbflags | XFS_SB_GQUOTINO, + sbflags | XFS_SB_PQUOTINO, flags | XFS_QMOPT_PQUOTA); if (error) goto error_rele; @@ -1704,8 +1738,7 @@ xfs_qm_write_sb_changes( int error; tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SBCHANGE); - error = xfs_trans_reserve(tp, 0, XFS_QM_SBCHANGE_LOG_RES(mp), - 0, 0, XFS_DEFAULT_LOG_COUNT); + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_qm_sbchange, 0, 0); if (error) { xfs_trans_cancel(tp, 0); return error; @@ -1734,8 +1767,8 @@ xfs_qm_write_sb_changes( int xfs_qm_vop_dqalloc( struct xfs_inode *ip, - uid_t uid, - gid_t gid, + xfs_dqid_t uid, + xfs_dqid_t gid, prid_t prid, uint flags, struct xfs_dquot **O_udqpp, @@ -1782,7 +1815,7 @@ xfs_qm_vop_dqalloc( * holding ilock. */ xfs_iunlock(ip, lockflags); - error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t) uid, + error = xfs_qm_dqget(mp, NULL, uid, XFS_DQ_USER, XFS_QMOPT_DQALLOC | XFS_QMOPT_DOWARN, @@ -1809,7 +1842,7 @@ xfs_qm_vop_dqalloc( if ((flags & XFS_QMOPT_GQUOTA) && XFS_IS_GQUOTA_ON(mp)) { if (ip->i_d.di_gid != gid) { xfs_iunlock(ip, lockflags); - error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)gid, + error = xfs_qm_dqget(mp, NULL, gid, XFS_DQ_GROUP, XFS_QMOPT_DQALLOC | XFS_QMOPT_DOWARN, @@ -1943,7 +1976,7 @@ xfs_qm_vop_chown_reserve( XFS_QMOPT_RES_RTBLKS : XFS_QMOPT_RES_REGBLKS; if (XFS_IS_UQUOTA_ON(mp) && udqp && - ip->i_d.di_uid != (uid_t)be32_to_cpu(udqp->q_core.d_id)) { + ip->i_d.di_uid != be32_to_cpu(udqp->q_core.d_id)) { udq_delblks = udqp; /* * If there are delayed allocation blocks, then we have to diff --git a/fs/xfs/xfs_qm.h b/fs/xfs/xfs_qm.h index 579d6a0..670cd44 100644 --- a/fs/xfs/xfs_qm.h +++ b/fs/xfs/xfs_qm.h @@ -160,6 +160,8 @@ extern int xfs_qm_scall_setqlim(struct xfs_mount *, xfs_dqid_t, uint, struct fs_disk_quota *); extern int xfs_qm_scall_getqstat(struct xfs_mount *, struct fs_quota_stat *); +extern int xfs_qm_scall_getqstatv(struct xfs_mount *, + struct fs_quota_statv *); extern int xfs_qm_scall_quotaon(struct xfs_mount *, uint); extern int xfs_qm_scall_quotaoff(struct xfs_mount *, uint); diff --git a/fs/xfs/xfs_qm_bhv.c b/fs/xfs/xfs_qm_bhv.c index 437a52d..3af50cc 100644 --- a/fs/xfs/xfs_qm_bhv.c +++ b/fs/xfs/xfs_qm_bhv.c @@ -17,6 +17,7 @@ */ #include "xfs.h" #include "xfs_fs.h" +#include "xfs_format.h" #include "xfs_log.h" #include "xfs_trans.h" #include "xfs_sb.h" diff --git a/fs/xfs/xfs_qm_syscalls.c b/fs/xfs/xfs_qm_syscalls.c index e4f8b2d..8174aad 100644 --- a/fs/xfs/xfs_qm_syscalls.c +++ b/fs/xfs/xfs_qm_syscalls.c @@ -20,6 +20,7 @@ #include "xfs.h" #include "xfs_fs.h" +#include "xfs_format.h" #include "xfs_bit.h" #include "xfs_log.h" #include "xfs_trans.h" @@ -37,7 +38,6 @@ #include "xfs_error.h" #include "xfs_attr.h" #include "xfs_buf_item.h" -#include "xfs_utils.h" #include "xfs_qm.h" #include "xfs_trace.h" #include "xfs_icache.h" @@ -247,9 +247,7 @@ xfs_qm_scall_trunc_qfile( xfs_ilock(ip, XFS_IOLOCK_EXCL); tp = xfs_trans_alloc(mp, XFS_TRANS_TRUNCATE_FILE); - error = xfs_trans_reserve(tp, 0, XFS_ITRUNCATE_LOG_RES(mp), 0, - XFS_TRANS_PERM_LOG_RES, - XFS_ITRUNCATE_LOG_COUNT); + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_itruncate, 0, 0); if (error) { xfs_trans_cancel(tp, 0); xfs_iunlock(ip, XFS_IOLOCK_EXCL); @@ -296,8 +294,10 @@ xfs_qm_scall_trunc_qfiles( if (flags & XFS_DQ_USER) error = xfs_qm_scall_trunc_qfile(mp, mp->m_sb.sb_uquotino); - if (flags & (XFS_DQ_GROUP|XFS_DQ_PROJ)) + if (flags & XFS_DQ_GROUP) error2 = xfs_qm_scall_trunc_qfile(mp, mp->m_sb.sb_gquotino); + if (flags & XFS_DQ_PROJ) + error2 = xfs_qm_scall_trunc_qfile(mp, mp->m_sb.sb_pquotino); return error ? error : error2; } @@ -404,6 +404,7 @@ xfs_qm_scall_quotaon( /* * Return quota status information, such as uquota-off, enforcements, etc. + * for Q_XGETQSTAT command. */ int xfs_qm_scall_getqstat( @@ -413,8 +414,10 @@ xfs_qm_scall_getqstat( struct xfs_quotainfo *q = mp->m_quotainfo; struct xfs_inode *uip = NULL; struct xfs_inode *gip = NULL; + struct xfs_inode *pip = NULL; bool tempuqip = false; bool tempgqip = false; + bool temppqip = false; memset(out, 0, sizeof(fs_quota_stat_t)); @@ -424,16 +427,106 @@ xfs_qm_scall_getqstat( out->qs_gquota.qfs_ino = NULLFSINO; return (0); } + + out->qs_flags = (__uint16_t) xfs_qm_export_flags(mp->m_qflags & + (XFS_ALL_QUOTA_ACCT| + XFS_ALL_QUOTA_ENFD)); + if (q) { + uip = q->qi_uquotaip; + gip = q->qi_gquotaip; + pip = q->qi_pquotaip; + } + if (!uip && mp->m_sb.sb_uquotino != NULLFSINO) { + if (xfs_iget(mp, NULL, mp->m_sb.sb_uquotino, + 0, 0, &uip) == 0) + tempuqip = true; + } + if (!gip && mp->m_sb.sb_gquotino != NULLFSINO) { + if (xfs_iget(mp, NULL, mp->m_sb.sb_gquotino, + 0, 0, &gip) == 0) + tempgqip = true; + } + /* + * Q_XGETQSTAT doesn't have room for both group and project quotas. + * So, allow the project quota values to be copied out only if + * there is no group quota information available. + */ + if (!gip) { + if (!pip && mp->m_sb.sb_pquotino != NULLFSINO) { + if (xfs_iget(mp, NULL, mp->m_sb.sb_pquotino, + 0, 0, &pip) == 0) + temppqip = true; + } + } else + pip = NULL; + if (uip) { + out->qs_uquota.qfs_ino = mp->m_sb.sb_uquotino; + out->qs_uquota.qfs_nblks = uip->i_d.di_nblocks; + out->qs_uquota.qfs_nextents = uip->i_d.di_nextents; + if (tempuqip) + IRELE(uip); + } + + if (gip) { + out->qs_gquota.qfs_ino = mp->m_sb.sb_gquotino; + out->qs_gquota.qfs_nblks = gip->i_d.di_nblocks; + out->qs_gquota.qfs_nextents = gip->i_d.di_nextents; + if (tempgqip) + IRELE(gip); + } + if (pip) { + out->qs_gquota.qfs_ino = mp->m_sb.sb_gquotino; + out->qs_gquota.qfs_nblks = pip->i_d.di_nblocks; + out->qs_gquota.qfs_nextents = pip->i_d.di_nextents; + if (temppqip) + IRELE(pip); + } + if (q) { + out->qs_incoredqs = q->qi_dquots; + out->qs_btimelimit = q->qi_btimelimit; + out->qs_itimelimit = q->qi_itimelimit; + out->qs_rtbtimelimit = q->qi_rtbtimelimit; + out->qs_bwarnlimit = q->qi_bwarnlimit; + out->qs_iwarnlimit = q->qi_iwarnlimit; + } + return 0; +} + +/* + * Return quota status information, such as uquota-off, enforcements, etc. + * for Q_XGETQSTATV command, to support separate project quota field. + */ +int +xfs_qm_scall_getqstatv( + struct xfs_mount *mp, + struct fs_quota_statv *out) +{ + struct xfs_quotainfo *q = mp->m_quotainfo; + struct xfs_inode *uip = NULL; + struct xfs_inode *gip = NULL; + struct xfs_inode *pip = NULL; + bool tempuqip = false; + bool tempgqip = false; + bool temppqip = false; + + if (!xfs_sb_version_hasquota(&mp->m_sb)) { + out->qs_uquota.qfs_ino = NULLFSINO; + out->qs_gquota.qfs_ino = NULLFSINO; + out->qs_pquota.qfs_ino = NULLFSINO; + return (0); + } + out->qs_flags = (__uint16_t) xfs_qm_export_flags(mp->m_qflags & (XFS_ALL_QUOTA_ACCT| XFS_ALL_QUOTA_ENFD)); - out->qs_pad = 0; out->qs_uquota.qfs_ino = mp->m_sb.sb_uquotino; out->qs_gquota.qfs_ino = mp->m_sb.sb_gquotino; + out->qs_pquota.qfs_ino = mp->m_sb.sb_pquotino; if (q) { uip = q->qi_uquotaip; gip = q->qi_gquotaip; + pip = q->qi_pquotaip; } if (!uip && mp->m_sb.sb_uquotino != NULLFSINO) { if (xfs_iget(mp, NULL, mp->m_sb.sb_uquotino, @@ -445,18 +538,30 @@ xfs_qm_scall_getqstat( 0, 0, &gip) == 0) tempgqip = true; } + if (!pip && mp->m_sb.sb_pquotino != NULLFSINO) { + if (xfs_iget(mp, NULL, mp->m_sb.sb_pquotino, + 0, 0, &pip) == 0) + temppqip = true; + } if (uip) { out->qs_uquota.qfs_nblks = uip->i_d.di_nblocks; out->qs_uquota.qfs_nextents = uip->i_d.di_nextents; if (tempuqip) IRELE(uip); } + if (gip) { out->qs_gquota.qfs_nblks = gip->i_d.di_nblocks; out->qs_gquota.qfs_nextents = gip->i_d.di_nextents; if (tempgqip) IRELE(gip); } + if (pip) { + out->qs_pquota.qfs_nblks = pip->i_d.di_nblocks; + out->qs_pquota.qfs_nextents = pip->i_d.di_nextents; + if (temppqip) + IRELE(pip); + } if (q) { out->qs_incoredqs = q->qi_dquots; out->qs_btimelimit = q->qi_btimelimit; @@ -515,8 +620,7 @@ xfs_qm_scall_setqlim( xfs_dqunlock(dqp); tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SETQLIM); - error = xfs_trans_reserve(tp, 0, XFS_QM_SETQLIM_LOG_RES(mp), - 0, 0, XFS_DEFAULT_LOG_COUNT); + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_qm_setqlim, 0, 0); if (error) { xfs_trans_cancel(tp, 0); goto out_rele; @@ -650,8 +754,7 @@ xfs_qm_log_quotaoff_end( tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QUOTAOFF_END); - error = xfs_trans_reserve(tp, 0, XFS_QM_QUOTAOFF_END_LOG_RES(mp), - 0, 0, XFS_DEFAULT_LOG_COUNT); + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_qm_equotaoff, 0, 0); if (error) { xfs_trans_cancel(tp, 0); return (error); @@ -684,8 +787,7 @@ xfs_qm_log_quotaoff( uint oldsbqflag=0; tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QUOTAOFF); - error = xfs_trans_reserve(tp, 0, XFS_QM_QUOTAOFF_LOG_RES(mp), - 0, 0, XFS_DEFAULT_LOG_COUNT); + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_qm_quotaoff, 0, 0); if (error) goto error0; diff --git a/fs/xfs/xfs_quota.h b/fs/xfs/xfs_quota.h index b14f42c..e7d84d2 100644 --- a/fs/xfs/xfs_quota.h +++ b/fs/xfs/xfs_quota.h @@ -18,267 +18,14 @@ #ifndef __XFS_QUOTA_H__ #define __XFS_QUOTA_H__ -struct xfs_trans; - -/* - * The ondisk form of a dquot structure. - */ -#define XFS_DQUOT_MAGIC 0x4451 /* 'DQ' */ -#define XFS_DQUOT_VERSION (u_int8_t)0x01 /* latest version number */ - -/* - * uid_t and gid_t are hard-coded to 32 bits in the inode. - * Hence, an 'id' in a dquot is 32 bits.. - */ -typedef __uint32_t xfs_dqid_t; - -/* - * Even though users may not have quota limits occupying all 64-bits, - * they may need 64-bit accounting. Hence, 64-bit quota-counters, - * and quota-limits. This is a waste in the common case, but hey ... - */ -typedef __uint64_t xfs_qcnt_t; -typedef __uint16_t xfs_qwarncnt_t; - -/* - * This is the main portion of the on-disk representation of quota - * information for a user. This is the q_core of the xfs_dquot_t that - * is kept in kernel memory. We pad this with some more expansion room - * to construct the on disk structure. - */ -typedef struct xfs_disk_dquot { - __be16 d_magic; /* dquot magic = XFS_DQUOT_MAGIC */ - __u8 d_version; /* dquot version */ - __u8 d_flags; /* XFS_DQ_USER/PROJ/GROUP */ - __be32 d_id; /* user,project,group id */ - __be64 d_blk_hardlimit;/* absolute limit on disk blks */ - __be64 d_blk_softlimit;/* preferred limit on disk blks */ - __be64 d_ino_hardlimit;/* maximum # allocated inodes */ - __be64 d_ino_softlimit;/* preferred inode limit */ - __be64 d_bcount; /* disk blocks owned by the user */ - __be64 d_icount; /* inodes owned by the user */ - __be32 d_itimer; /* zero if within inode limits if not, - this is when we refuse service */ - __be32 d_btimer; /* similar to above; for disk blocks */ - __be16 d_iwarns; /* warnings issued wrt num inodes */ - __be16 d_bwarns; /* warnings issued wrt disk blocks */ - __be32 d_pad0; /* 64 bit align */ - __be64 d_rtb_hardlimit;/* absolute limit on realtime blks */ - __be64 d_rtb_softlimit;/* preferred limit on RT disk blks */ - __be64 d_rtbcount; /* realtime blocks owned */ - __be32 d_rtbtimer; /* similar to above; for RT disk blocks */ - __be16 d_rtbwarns; /* warnings issued wrt RT disk blocks */ - __be16 d_pad; -} xfs_disk_dquot_t; - -/* - * This is what goes on disk. This is separated from the xfs_disk_dquot because - * carrying the unnecessary padding would be a waste of memory. - */ -typedef struct xfs_dqblk { - xfs_disk_dquot_t dd_diskdq; /* portion that lives incore as well */ - char dd_fill[4]; /* filling for posterity */ - - /* - * These two are only present on filesystems with the CRC bits set. - */ - __be32 dd_crc; /* checksum */ - __be64 dd_lsn; /* last modification in log */ - uuid_t dd_uuid; /* location information */ -} xfs_dqblk_t; - -#define XFS_DQUOT_CRC_OFF offsetof(struct xfs_dqblk, dd_crc) - -/* - * flags for q_flags field in the dquot. - */ -#define XFS_DQ_USER 0x0001 /* a user quota */ -#define XFS_DQ_PROJ 0x0002 /* project quota */ -#define XFS_DQ_GROUP 0x0004 /* a group quota */ -#define XFS_DQ_DIRTY 0x0008 /* dquot is dirty */ -#define XFS_DQ_FREEING 0x0010 /* dquot is beeing torn down */ - -#define XFS_DQ_ALLTYPES (XFS_DQ_USER|XFS_DQ_PROJ|XFS_DQ_GROUP) - -#define XFS_DQ_FLAGS \ - { XFS_DQ_USER, "USER" }, \ - { XFS_DQ_PROJ, "PROJ" }, \ - { XFS_DQ_GROUP, "GROUP" }, \ - { XFS_DQ_DIRTY, "DIRTY" }, \ - { XFS_DQ_FREEING, "FREEING" } - -/* - * We have the possibility of all three quota types being active at once, and - * hence free space modification requires modification of all three current - * dquots in a single transaction. For this case we need to have a reservation - * of at least 3 dquots. - * - * However, a chmod operation can change both UID and GID in a single - * transaction, resulting in requiring {old, new} x {uid, gid} dquots to be - * modified. Hence for this case we need to reserve space for at least 4 dquots. - * - * And in the worst case, there's a rename operation that can be modifying up to - * 4 inodes with dquots attached to them. In reality, the only inodes that can - * have their dquots modified are the source and destination directory inodes - * due to directory name creation and removal. That can require space allocation - * and/or freeing on both directory inodes, and hence all three dquots on each - * inode can be modified. And if the directories are world writeable, all the - * dquots can be unique and so 6 dquots can be modified.... - * - * And, of course, we also need to take into account the dquot log format item - * used to describe each dquot. - */ -#define XFS_DQUOT_LOGRES(mp) \ - ((sizeof(struct xfs_dq_logformat) + sizeof(struct xfs_disk_dquot)) * 6) - -/* - * These are the structures used to lay out dquots and quotaoff - * records on the log. Quite similar to those of inodes. - */ - -/* - * log format struct for dquots. - * The first two fields must be the type and size fitting into - * 32 bits : log_recovery code assumes that. - */ -typedef struct xfs_dq_logformat { - __uint16_t qlf_type; /* dquot log item type */ - __uint16_t qlf_size; /* size of this item */ - xfs_dqid_t qlf_id; /* usr/grp/proj id : 32 bits */ - __int64_t qlf_blkno; /* blkno of dquot buffer */ - __int32_t qlf_len; /* len of dquot buffer */ - __uint32_t qlf_boffset; /* off of dquot in buffer */ -} xfs_dq_logformat_t; - -/* - * log format struct for QUOTAOFF records. - * The first two fields must be the type and size fitting into - * 32 bits : log_recovery code assumes that. - * We write two LI_QUOTAOFF logitems per quotaoff, the last one keeps a pointer - * to the first and ensures that the first logitem is taken out of the AIL - * only when the last one is securely committed. - */ -typedef struct xfs_qoff_logformat { - unsigned short qf_type; /* quotaoff log item type */ - unsigned short qf_size; /* size of this item */ - unsigned int qf_flags; /* USR and/or GRP */ - char qf_pad[12]; /* padding for future */ -} xfs_qoff_logformat_t; - - -/* - * Disk quotas status in m_qflags, and also sb_qflags. 16 bits. - */ -#define XFS_UQUOTA_ACCT 0x0001 /* user quota accounting ON */ -#define XFS_UQUOTA_ENFD 0x0002 /* user quota limits enforced */ -#define XFS_UQUOTA_CHKD 0x0004 /* quotacheck run on usr quotas */ -#define XFS_PQUOTA_ACCT 0x0008 /* project quota accounting ON */ -#define XFS_OQUOTA_ENFD 0x0010 /* other (grp/prj) quota limits enforced */ -#define XFS_OQUOTA_CHKD 0x0020 /* quotacheck run on other (grp/prj) quotas */ -#define XFS_GQUOTA_ACCT 0x0040 /* group quota accounting ON */ - -/* - * Conversion to and from the combined OQUOTA flag (if necessary) - * is done only in xfs_sb_qflags_to_disk() and xfs_sb_qflags_from_disk() - */ -#define XFS_GQUOTA_ENFD 0x0080 /* group quota limits enforced */ -#define XFS_GQUOTA_CHKD 0x0100 /* quotacheck run on group quotas */ -#define XFS_PQUOTA_ENFD 0x0200 /* project quota limits enforced */ -#define XFS_PQUOTA_CHKD 0x0400 /* quotacheck run on project quotas */ - -/* - * Quota Accounting/Enforcement flags - */ -#define XFS_ALL_QUOTA_ACCT \ - (XFS_UQUOTA_ACCT | XFS_GQUOTA_ACCT | XFS_PQUOTA_ACCT) -#define XFS_ALL_QUOTA_ENFD \ - (XFS_UQUOTA_ENFD | XFS_GQUOTA_ENFD | XFS_PQUOTA_ENFD) -#define XFS_ALL_QUOTA_CHKD \ - (XFS_UQUOTA_CHKD | XFS_GQUOTA_CHKD | XFS_PQUOTA_CHKD) - -#define XFS_IS_QUOTA_RUNNING(mp) ((mp)->m_qflags & XFS_ALL_QUOTA_ACCT) -#define XFS_IS_UQUOTA_RUNNING(mp) ((mp)->m_qflags & XFS_UQUOTA_ACCT) -#define XFS_IS_PQUOTA_RUNNING(mp) ((mp)->m_qflags & XFS_PQUOTA_ACCT) -#define XFS_IS_GQUOTA_RUNNING(mp) ((mp)->m_qflags & XFS_GQUOTA_ACCT) -#define XFS_IS_UQUOTA_ENFORCED(mp) ((mp)->m_qflags & XFS_UQUOTA_ENFD) -#define XFS_IS_GQUOTA_ENFORCED(mp) ((mp)->m_qflags & XFS_GQUOTA_ENFD) -#define XFS_IS_PQUOTA_ENFORCED(mp) ((mp)->m_qflags & XFS_PQUOTA_ENFD) - -/* - * Incore only flags for quotaoff - these bits get cleared when quota(s) - * are in the process of getting turned off. These flags are in m_qflags but - * never in sb_qflags. - */ -#define XFS_UQUOTA_ACTIVE 0x1000 /* uquotas are being turned off */ -#define XFS_GQUOTA_ACTIVE 0x2000 /* gquotas are being turned off */ -#define XFS_PQUOTA_ACTIVE 0x4000 /* pquotas are being turned off */ -#define XFS_ALL_QUOTA_ACTIVE \ - (XFS_UQUOTA_ACTIVE | XFS_GQUOTA_ACTIVE | XFS_PQUOTA_ACTIVE) +#include "xfs_quota_defs.h" /* - * Checking XFS_IS_*QUOTA_ON() while holding any inode lock guarantees - * quota will be not be switched off as long as that inode lock is held. + * Kernel only quota definitions and functions */ -#define XFS_IS_QUOTA_ON(mp) ((mp)->m_qflags & (XFS_UQUOTA_ACTIVE | \ - XFS_GQUOTA_ACTIVE | \ - XFS_PQUOTA_ACTIVE)) -#define XFS_IS_OQUOTA_ON(mp) ((mp)->m_qflags & (XFS_GQUOTA_ACTIVE | \ - XFS_PQUOTA_ACTIVE)) -#define XFS_IS_UQUOTA_ON(mp) ((mp)->m_qflags & XFS_UQUOTA_ACTIVE) -#define XFS_IS_GQUOTA_ON(mp) ((mp)->m_qflags & XFS_GQUOTA_ACTIVE) -#define XFS_IS_PQUOTA_ON(mp) ((mp)->m_qflags & XFS_PQUOTA_ACTIVE) -/* - * Flags to tell various functions what to do. Not all of these are meaningful - * to a single function. None of these XFS_QMOPT_* flags are meant to have - * persistent values (ie. their values can and will change between versions) - */ -#define XFS_QMOPT_DQALLOC 0x0000002 /* alloc dquot ondisk if needed */ -#define XFS_QMOPT_UQUOTA 0x0000004 /* user dquot requested */ -#define XFS_QMOPT_PQUOTA 0x0000008 /* project dquot requested */ -#define XFS_QMOPT_FORCE_RES 0x0000010 /* ignore quota limits */ -#define XFS_QMOPT_SBVERSION 0x0000040 /* change superblock version num */ -#define XFS_QMOPT_DOWARN 0x0000400 /* increase warning cnt if needed */ -#define XFS_QMOPT_DQREPAIR 0x0001000 /* repair dquot if damaged */ -#define XFS_QMOPT_GQUOTA 0x0002000 /* group dquot requested */ -#define XFS_QMOPT_ENOSPC 0x0004000 /* enospc instead of edquot (prj) */ - -/* - * flags to xfs_trans_mod_dquot to indicate which field needs to be - * modified. - */ -#define XFS_QMOPT_RES_REGBLKS 0x0010000 -#define XFS_QMOPT_RES_RTBLKS 0x0020000 -#define XFS_QMOPT_BCOUNT 0x0040000 -#define XFS_QMOPT_ICOUNT 0x0080000 -#define XFS_QMOPT_RTBCOUNT 0x0100000 -#define XFS_QMOPT_DELBCOUNT 0x0200000 -#define XFS_QMOPT_DELRTBCOUNT 0x0400000 -#define XFS_QMOPT_RES_INOS 0x0800000 - -/* - * flags for dqalloc. - */ -#define XFS_QMOPT_INHERIT 0x1000000 - -/* - * flags to xfs_trans_mod_dquot. - */ -#define XFS_TRANS_DQ_RES_BLKS XFS_QMOPT_RES_REGBLKS -#define XFS_TRANS_DQ_RES_RTBLKS XFS_QMOPT_RES_RTBLKS -#define XFS_TRANS_DQ_RES_INOS XFS_QMOPT_RES_INOS -#define XFS_TRANS_DQ_BCOUNT XFS_QMOPT_BCOUNT -#define XFS_TRANS_DQ_DELBCOUNT XFS_QMOPT_DELBCOUNT -#define XFS_TRANS_DQ_ICOUNT XFS_QMOPT_ICOUNT -#define XFS_TRANS_DQ_RTBCOUNT XFS_QMOPT_RTBCOUNT -#define XFS_TRANS_DQ_DELRTBCOUNT XFS_QMOPT_DELRTBCOUNT - - -#define XFS_QMOPT_QUOTALL \ - (XFS_QMOPT_UQUOTA | XFS_QMOPT_PQUOTA | XFS_QMOPT_GQUOTA) -#define XFS_QMOPT_RESBLK_MASK (XFS_QMOPT_RES_REGBLKS | XFS_QMOPT_RES_RTBLKS) +struct xfs_trans; -#ifdef __KERNEL__ /* * This check is done typically without holding the inode lock; * that may seem racy, but it is harmless in the context that it is used. @@ -301,13 +48,6 @@ typedef struct xfs_qoff_logformat { (XFS_IS_PQUOTA_ON(mp) && \ (mp->m_sb.sb_qflags & XFS_PQUOTA_CHKD) == 0)) -#define XFS_MOUNT_QUOTA_ALL (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD|\ - XFS_UQUOTA_CHKD|XFS_GQUOTA_ACCT|\ - XFS_GQUOTA_ENFD|XFS_GQUOTA_CHKD|\ - XFS_PQUOTA_ACCT|XFS_PQUOTA_ENFD|\ - XFS_PQUOTA_CHKD) - - /* * The structure kept inside the xfs_trans_t keep track of dquot changes * within a transaction and apply them later. @@ -340,8 +80,9 @@ extern int xfs_trans_reserve_quota_bydquots(struct xfs_trans *, struct xfs_mount *, struct xfs_dquot *, struct xfs_dquot *, struct xfs_dquot *, long, long, uint); -extern int xfs_qm_vop_dqalloc(struct xfs_inode *, uid_t, gid_t, prid_t, uint, - struct xfs_dquot **, struct xfs_dquot **, struct xfs_dquot **); +extern int xfs_qm_vop_dqalloc(struct xfs_inode *, xfs_dqid_t, xfs_dqid_t, + prid_t, uint, struct xfs_dquot **, struct xfs_dquot **, + struct xfs_dquot **); extern void xfs_qm_vop_create_dqattach(struct xfs_trans *, struct xfs_inode *, struct xfs_dquot *, struct xfs_dquot *, struct xfs_dquot *); extern int xfs_qm_vop_rename_dqattach(struct xfs_inode **); @@ -362,9 +103,9 @@ extern void xfs_qm_unmount_quotas(struct xfs_mount *); #else static inline int -xfs_qm_vop_dqalloc(struct xfs_inode *ip, uid_t uid, gid_t gid, prid_t prid, - uint flags, struct xfs_dquot **udqp, struct xfs_dquot **gdqp, - struct xfs_dquot **pdqp) +xfs_qm_vop_dqalloc(struct xfs_inode *ip, xfs_dqid_t uid, xfs_dqid_t gid, + prid_t prid, uint flags, struct xfs_dquot **udqp, + struct xfs_dquot **gdqp, struct xfs_dquot **pdqp) { *udqp = NULL; *gdqp = NULL; @@ -415,5 +156,4 @@ extern int xfs_mount_reset_sbqflags(struct xfs_mount *); extern const struct xfs_buf_ops xfs_dquot_buf_ops; -#endif /* __KERNEL__ */ #endif /* __XFS_QUOTA_H__ */ diff --git a/fs/xfs/xfs_quota_defs.h b/fs/xfs/xfs_quota_defs.h new file mode 100644 index 0000000..e6b0d6e --- /dev/null +++ b/fs/xfs/xfs_quota_defs.h @@ -0,0 +1,157 @@ +/* + * Copyright (c) 2000-2005 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#ifndef __XFS_QUOTA_DEFS_H__ +#define __XFS_QUOTA_DEFS_H__ + +/* + * Quota definitions shared between user and kernel source trees. + */ + +/* + * Even though users may not have quota limits occupying all 64-bits, + * they may need 64-bit accounting. Hence, 64-bit quota-counters, + * and quota-limits. This is a waste in the common case, but hey ... + */ +typedef __uint64_t xfs_qcnt_t; +typedef __uint16_t xfs_qwarncnt_t; + +/* + * flags for q_flags field in the dquot. + */ +#define XFS_DQ_USER 0x0001 /* a user quota */ +#define XFS_DQ_PROJ 0x0002 /* project quota */ +#define XFS_DQ_GROUP 0x0004 /* a group quota */ +#define XFS_DQ_DIRTY 0x0008 /* dquot is dirty */ +#define XFS_DQ_FREEING 0x0010 /* dquot is beeing torn down */ + +#define XFS_DQ_ALLTYPES (XFS_DQ_USER|XFS_DQ_PROJ|XFS_DQ_GROUP) + +#define XFS_DQ_FLAGS \ + { XFS_DQ_USER, "USER" }, \ + { XFS_DQ_PROJ, "PROJ" }, \ + { XFS_DQ_GROUP, "GROUP" }, \ + { XFS_DQ_DIRTY, "DIRTY" }, \ + { XFS_DQ_FREEING, "FREEING" } + +/* + * We have the possibility of all three quota types being active at once, and + * hence free space modification requires modification of all three current + * dquots in a single transaction. For this case we need to have a reservation + * of at least 3 dquots. + * + * However, a chmod operation can change both UID and GID in a single + * transaction, resulting in requiring {old, new} x {uid, gid} dquots to be + * modified. Hence for this case we need to reserve space for at least 4 dquots. + * + * And in the worst case, there's a rename operation that can be modifying up to + * 4 inodes with dquots attached to them. In reality, the only inodes that can + * have their dquots modified are the source and destination directory inodes + * due to directory name creation and removal. That can require space allocation + * and/or freeing on both directory inodes, and hence all three dquots on each + * inode can be modified. And if the directories are world writeable, all the + * dquots can be unique and so 6 dquots can be modified.... + * + * And, of course, we also need to take into account the dquot log format item + * used to describe each dquot. + */ +#define XFS_DQUOT_LOGRES(mp) \ + ((sizeof(struct xfs_dq_logformat) + sizeof(struct xfs_disk_dquot)) * 6) + +#define XFS_IS_QUOTA_RUNNING(mp) ((mp)->m_qflags & XFS_ALL_QUOTA_ACCT) +#define XFS_IS_UQUOTA_RUNNING(mp) ((mp)->m_qflags & XFS_UQUOTA_ACCT) +#define XFS_IS_PQUOTA_RUNNING(mp) ((mp)->m_qflags & XFS_PQUOTA_ACCT) +#define XFS_IS_GQUOTA_RUNNING(mp) ((mp)->m_qflags & XFS_GQUOTA_ACCT) +#define XFS_IS_UQUOTA_ENFORCED(mp) ((mp)->m_qflags & XFS_UQUOTA_ENFD) +#define XFS_IS_GQUOTA_ENFORCED(mp) ((mp)->m_qflags & XFS_GQUOTA_ENFD) +#define XFS_IS_PQUOTA_ENFORCED(mp) ((mp)->m_qflags & XFS_PQUOTA_ENFD) + +/* + * Incore only flags for quotaoff - these bits get cleared when quota(s) + * are in the process of getting turned off. These flags are in m_qflags but + * never in sb_qflags. + */ +#define XFS_UQUOTA_ACTIVE 0x1000 /* uquotas are being turned off */ +#define XFS_GQUOTA_ACTIVE 0x2000 /* gquotas are being turned off */ +#define XFS_PQUOTA_ACTIVE 0x4000 /* pquotas are being turned off */ +#define XFS_ALL_QUOTA_ACTIVE \ + (XFS_UQUOTA_ACTIVE | XFS_GQUOTA_ACTIVE | XFS_PQUOTA_ACTIVE) + +/* + * Checking XFS_IS_*QUOTA_ON() while holding any inode lock guarantees + * quota will be not be switched off as long as that inode lock is held. + */ +#define XFS_IS_QUOTA_ON(mp) ((mp)->m_qflags & (XFS_UQUOTA_ACTIVE | \ + XFS_GQUOTA_ACTIVE | \ + XFS_PQUOTA_ACTIVE)) +#define XFS_IS_OQUOTA_ON(mp) ((mp)->m_qflags & (XFS_GQUOTA_ACTIVE | \ + XFS_PQUOTA_ACTIVE)) +#define XFS_IS_UQUOTA_ON(mp) ((mp)->m_qflags & XFS_UQUOTA_ACTIVE) +#define XFS_IS_GQUOTA_ON(mp) ((mp)->m_qflags & XFS_GQUOTA_ACTIVE) +#define XFS_IS_PQUOTA_ON(mp) ((mp)->m_qflags & XFS_PQUOTA_ACTIVE) + +/* + * Flags to tell various functions what to do. Not all of these are meaningful + * to a single function. None of these XFS_QMOPT_* flags are meant to have + * persistent values (ie. their values can and will change between versions) + */ +#define XFS_QMOPT_DQALLOC 0x0000002 /* alloc dquot ondisk if needed */ +#define XFS_QMOPT_UQUOTA 0x0000004 /* user dquot requested */ +#define XFS_QMOPT_PQUOTA 0x0000008 /* project dquot requested */ +#define XFS_QMOPT_FORCE_RES 0x0000010 /* ignore quota limits */ +#define XFS_QMOPT_SBVERSION 0x0000040 /* change superblock version num */ +#define XFS_QMOPT_DOWARN 0x0000400 /* increase warning cnt if needed */ +#define XFS_QMOPT_DQREPAIR 0x0001000 /* repair dquot if damaged */ +#define XFS_QMOPT_GQUOTA 0x0002000 /* group dquot requested */ +#define XFS_QMOPT_ENOSPC 0x0004000 /* enospc instead of edquot (prj) */ + +/* + * flags to xfs_trans_mod_dquot to indicate which field needs to be + * modified. + */ +#define XFS_QMOPT_RES_REGBLKS 0x0010000 +#define XFS_QMOPT_RES_RTBLKS 0x0020000 +#define XFS_QMOPT_BCOUNT 0x0040000 +#define XFS_QMOPT_ICOUNT 0x0080000 +#define XFS_QMOPT_RTBCOUNT 0x0100000 +#define XFS_QMOPT_DELBCOUNT 0x0200000 +#define XFS_QMOPT_DELRTBCOUNT 0x0400000 +#define XFS_QMOPT_RES_INOS 0x0800000 + +/* + * flags for dqalloc. + */ +#define XFS_QMOPT_INHERIT 0x1000000 + +/* + * flags to xfs_trans_mod_dquot. + */ +#define XFS_TRANS_DQ_RES_BLKS XFS_QMOPT_RES_REGBLKS +#define XFS_TRANS_DQ_RES_RTBLKS XFS_QMOPT_RES_RTBLKS +#define XFS_TRANS_DQ_RES_INOS XFS_QMOPT_RES_INOS +#define XFS_TRANS_DQ_BCOUNT XFS_QMOPT_BCOUNT +#define XFS_TRANS_DQ_DELBCOUNT XFS_QMOPT_DELBCOUNT +#define XFS_TRANS_DQ_ICOUNT XFS_QMOPT_ICOUNT +#define XFS_TRANS_DQ_RTBCOUNT XFS_QMOPT_RTBCOUNT +#define XFS_TRANS_DQ_DELRTBCOUNT XFS_QMOPT_DELRTBCOUNT + + +#define XFS_QMOPT_QUOTALL \ + (XFS_QMOPT_UQUOTA | XFS_QMOPT_PQUOTA | XFS_QMOPT_GQUOTA) +#define XFS_QMOPT_RESBLK_MASK (XFS_QMOPT_RES_REGBLKS | XFS_QMOPT_RES_RTBLKS) + +#endif /* __XFS_QUOTA_H__ */ diff --git a/fs/xfs/xfs_quotaops.c b/fs/xfs/xfs_quotaops.c index 20e30f9..1326d81 100644 --- a/fs/xfs/xfs_quotaops.c +++ b/fs/xfs/xfs_quotaops.c @@ -16,8 +16,10 @@ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #include "xfs.h" -#include "xfs_sb.h" +#include "xfs_format.h" +#include "xfs_trans_resv.h" #include "xfs_log.h" +#include "xfs_sb.h" #include "xfs_ag.h" #include "xfs_mount.h" #include "xfs_quota.h" @@ -54,6 +56,18 @@ xfs_fs_get_xstate( } STATIC int +xfs_fs_get_xstatev( + struct super_block *sb, + struct fs_quota_statv *fqs) +{ + struct xfs_mount *mp = XFS_M(sb); + + if (!XFS_IS_QUOTA_RUNNING(mp)) + return -ENOSYS; + return -xfs_qm_scall_getqstatv(mp, fqs); +} + +STATIC int xfs_fs_set_xstate( struct super_block *sb, unsigned int uflags, @@ -133,6 +147,7 @@ xfs_fs_set_dqblk( } const struct quotactl_ops xfs_quotactl_operations = { + .get_xstatev = xfs_fs_get_xstatev, .get_xstate = xfs_fs_get_xstate, .set_xstate = xfs_fs_set_xstate, .get_dqblk = xfs_fs_get_dqblk, diff --git a/fs/xfs/xfs_rename.c b/fs/xfs/xfs_rename.c deleted file mode 100644 index 30ff5f4..0000000 --- a/fs/xfs/xfs_rename.c +++ /dev/null @@ -1,346 +0,0 @@ -/* - * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#include "xfs.h" -#include "xfs_fs.h" -#include "xfs_types.h" -#include "xfs_log.h" -#include "xfs_trans.h" -#include "xfs_sb.h" -#include "xfs_ag.h" -#include "xfs_dir2.h" -#include "xfs_mount.h" -#include "xfs_da_btree.h" -#include "xfs_bmap_btree.h" -#include "xfs_dinode.h" -#include "xfs_inode.h" -#include "xfs_inode_item.h" -#include "xfs_bmap.h" -#include "xfs_error.h" -#include "xfs_quota.h" -#include "xfs_utils.h" -#include "xfs_trans_space.h" -#include "xfs_vnodeops.h" -#include "xfs_trace.h" - - -/* - * Enter all inodes for a rename transaction into a sorted array. - */ -STATIC void -xfs_sort_for_rename( - xfs_inode_t *dp1, /* in: old (source) directory inode */ - xfs_inode_t *dp2, /* in: new (target) directory inode */ - xfs_inode_t *ip1, /* in: inode of old entry */ - xfs_inode_t *ip2, /* in: inode of new entry, if it - already exists, NULL otherwise. */ - xfs_inode_t **i_tab,/* out: array of inode returned, sorted */ - int *num_inodes) /* out: number of inodes in array */ -{ - xfs_inode_t *temp; - int i, j; - - /* - * i_tab contains a list of pointers to inodes. We initialize - * the table here & we'll sort it. We will then use it to - * order the acquisition of the inode locks. - * - * Note that the table may contain duplicates. e.g., dp1 == dp2. - */ - i_tab[0] = dp1; - i_tab[1] = dp2; - i_tab[2] = ip1; - if (ip2) { - *num_inodes = 4; - i_tab[3] = ip2; - } else { - *num_inodes = 3; - i_tab[3] = NULL; - } - - /* - * Sort the elements via bubble sort. (Remember, there are at - * most 4 elements to sort, so this is adequate.) - */ - for (i = 0; i < *num_inodes; i++) { - for (j = 1; j < *num_inodes; j++) { - if (i_tab[j]->i_ino < i_tab[j-1]->i_ino) { - temp = i_tab[j]; - i_tab[j] = i_tab[j-1]; - i_tab[j-1] = temp; - } - } - } -} - -/* - * xfs_rename - */ -int -xfs_rename( - xfs_inode_t *src_dp, - struct xfs_name *src_name, - xfs_inode_t *src_ip, - xfs_inode_t *target_dp, - struct xfs_name *target_name, - xfs_inode_t *target_ip) -{ - xfs_trans_t *tp = NULL; - xfs_mount_t *mp = src_dp->i_mount; - int new_parent; /* moving to a new dir */ - int src_is_directory; /* src_name is a directory */ - int error; - xfs_bmap_free_t free_list; - xfs_fsblock_t first_block; - int cancel_flags; - int committed; - xfs_inode_t *inodes[4]; - int spaceres; - int num_inodes; - - trace_xfs_rename(src_dp, target_dp, src_name, target_name); - - new_parent = (src_dp != target_dp); - src_is_directory = S_ISDIR(src_ip->i_d.di_mode); - - xfs_sort_for_rename(src_dp, target_dp, src_ip, target_ip, - inodes, &num_inodes); - - xfs_bmap_init(&free_list, &first_block); - tp = xfs_trans_alloc(mp, XFS_TRANS_RENAME); - cancel_flags = XFS_TRANS_RELEASE_LOG_RES; - spaceres = XFS_RENAME_SPACE_RES(mp, target_name->len); - error = xfs_trans_reserve(tp, spaceres, XFS_RENAME_LOG_RES(mp), 0, - XFS_TRANS_PERM_LOG_RES, XFS_RENAME_LOG_COUNT); - if (error == ENOSPC) { - spaceres = 0; - error = xfs_trans_reserve(tp, 0, XFS_RENAME_LOG_RES(mp), 0, - XFS_TRANS_PERM_LOG_RES, XFS_RENAME_LOG_COUNT); - } - if (error) { - xfs_trans_cancel(tp, 0); - goto std_return; - } - - /* - * Attach the dquots to the inodes - */ - error = xfs_qm_vop_rename_dqattach(inodes); - if (error) { - xfs_trans_cancel(tp, cancel_flags); - goto std_return; - } - - /* - * Lock all the participating inodes. Depending upon whether - * the target_name exists in the target directory, and - * whether the target directory is the same as the source - * directory, we can lock from 2 to 4 inodes. - */ - xfs_lock_inodes(inodes, num_inodes, XFS_ILOCK_EXCL); - - /* - * Join all the inodes to the transaction. From this point on, - * we can rely on either trans_commit or trans_cancel to unlock - * them. - */ - xfs_trans_ijoin(tp, src_dp, XFS_ILOCK_EXCL); - if (new_parent) - xfs_trans_ijoin(tp, target_dp, XFS_ILOCK_EXCL); - xfs_trans_ijoin(tp, src_ip, XFS_ILOCK_EXCL); - if (target_ip) - xfs_trans_ijoin(tp, target_ip, XFS_ILOCK_EXCL); - - /* - * If we are using project inheritance, we only allow renames - * into our tree when the project IDs are the same; else the - * tree quota mechanism would be circumvented. - */ - if (unlikely((target_dp->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) && - (xfs_get_projid(target_dp) != xfs_get_projid(src_ip)))) { - error = XFS_ERROR(EXDEV); - goto error_return; - } - - /* - * Set up the target. - */ - if (target_ip == NULL) { - /* - * If there's no space reservation, check the entry will - * fit before actually inserting it. - */ - error = xfs_dir_canenter(tp, target_dp, target_name, spaceres); - if (error) - goto error_return; - /* - * If target does not exist and the rename crosses - * directories, adjust the target directory link count - * to account for the ".." reference from the new entry. - */ - error = xfs_dir_createname(tp, target_dp, target_name, - src_ip->i_ino, &first_block, - &free_list, spaceres); - if (error == ENOSPC) - goto error_return; - if (error) - goto abort_return; - - xfs_trans_ichgtime(tp, target_dp, - XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG); - - if (new_parent && src_is_directory) { - error = xfs_bumplink(tp, target_dp); - if (error) - goto abort_return; - } - } else { /* target_ip != NULL */ - /* - * If target exists and it's a directory, check that both - * target and source are directories and that target can be - * destroyed, or that neither is a directory. - */ - if (S_ISDIR(target_ip->i_d.di_mode)) { - /* - * Make sure target dir is empty. - */ - if (!(xfs_dir_isempty(target_ip)) || - (target_ip->i_d.di_nlink > 2)) { - error = XFS_ERROR(EEXIST); - goto error_return; - } - } - - /* - * Link the source inode under the target name. - * If the source inode is a directory and we are moving - * it across directories, its ".." entry will be - * inconsistent until we replace that down below. - * - * In case there is already an entry with the same - * name at the destination directory, remove it first. - */ - error = xfs_dir_replace(tp, target_dp, target_name, - src_ip->i_ino, - &first_block, &free_list, spaceres); - if (error) - goto abort_return; - - xfs_trans_ichgtime(tp, target_dp, - XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG); - - /* - * Decrement the link count on the target since the target - * dir no longer points to it. - */ - error = xfs_droplink(tp, target_ip); - if (error) - goto abort_return; - - if (src_is_directory) { - /* - * Drop the link from the old "." entry. - */ - error = xfs_droplink(tp, target_ip); - if (error) - goto abort_return; - } - } /* target_ip != NULL */ - - /* - * Remove the source. - */ - if (new_parent && src_is_directory) { - /* - * Rewrite the ".." entry to point to the new - * directory. - */ - error = xfs_dir_replace(tp, src_ip, &xfs_name_dotdot, - target_dp->i_ino, - &first_block, &free_list, spaceres); - ASSERT(error != EEXIST); - if (error) - goto abort_return; - } - - /* - * We always want to hit the ctime on the source inode. - * - * This isn't strictly required by the standards since the source - * inode isn't really being changed, but old unix file systems did - * it and some incremental backup programs won't work without it. - */ - xfs_trans_ichgtime(tp, src_ip, XFS_ICHGTIME_CHG); - xfs_trans_log_inode(tp, src_ip, XFS_ILOG_CORE); - - /* - * Adjust the link count on src_dp. This is necessary when - * renaming a directory, either within one parent when - * the target existed, or across two parent directories. - */ - if (src_is_directory && (new_parent || target_ip != NULL)) { - - /* - * Decrement link count on src_directory since the - * entry that's moved no longer points to it. - */ - error = xfs_droplink(tp, src_dp); - if (error) - goto abort_return; - } - - error = xfs_dir_removename(tp, src_dp, src_name, src_ip->i_ino, - &first_block, &free_list, spaceres); - if (error) - goto abort_return; - - xfs_trans_ichgtime(tp, src_dp, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG); - xfs_trans_log_inode(tp, src_dp, XFS_ILOG_CORE); - if (new_parent) - xfs_trans_log_inode(tp, target_dp, XFS_ILOG_CORE); - - /* - * If this is a synchronous mount, make sure that the - * rename transaction goes to disk before returning to - * the user. - */ - if (mp->m_flags & (XFS_MOUNT_WSYNC|XFS_MOUNT_DIRSYNC)) { - xfs_trans_set_sync(tp); - } - - error = xfs_bmap_finish(&tp, &free_list, &committed); - if (error) { - xfs_bmap_cancel(&free_list); - xfs_trans_cancel(tp, (XFS_TRANS_RELEASE_LOG_RES | - XFS_TRANS_ABORT)); - goto std_return; - } - - /* - * trans_commit will unlock src_ip, target_ip & decrement - * the vnode references. - */ - return xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES); - - abort_return: - cancel_flags |= XFS_TRANS_ABORT; - error_return: - xfs_bmap_cancel(&free_list); - xfs_trans_cancel(tp, cancel_flags); - std_return: - return error; -} diff --git a/fs/xfs/xfs_rtalloc.c b/fs/xfs/xfs_rtalloc.c index 98dc670..6f9e63c 100644 --- a/fs/xfs/xfs_rtalloc.c +++ b/fs/xfs/xfs_rtalloc.c @@ -17,25 +17,24 @@ */ #include "xfs.h" #include "xfs_fs.h" -#include "xfs_types.h" +#include "xfs_format.h" #include "xfs_bit.h" #include "xfs_log.h" #include "xfs_trans.h" #include "xfs_sb.h" #include "xfs_ag.h" -#include "xfs_dir2.h" #include "xfs_mount.h" #include "xfs_bmap_btree.h" #include "xfs_dinode.h" #include "xfs_inode.h" #include "xfs_alloc.h" #include "xfs_bmap.h" +#include "xfs_bmap_util.h" #include "xfs_rtalloc.h" #include "xfs_fsops.h" #include "xfs_error.h" #include "xfs_inode_item.h" #include "xfs_trans_space.h" -#include "xfs_utils.h" #include "xfs_trace.h" #include "xfs_buf.h" #include "xfs_icache.h" @@ -101,10 +100,9 @@ xfs_growfs_rt_alloc( /* * Reserve space & log for one extent added to the file. */ - if ((error = xfs_trans_reserve(tp, resblks, - XFS_GROWRTALLOC_LOG_RES(mp), 0, - XFS_TRANS_PERM_LOG_RES, - XFS_DEFAULT_PERM_LOG_COUNT))) + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_growdata, + resblks, 0); + if (error) goto error_cancel; cancelflags = XFS_TRANS_RELEASE_LOG_RES; /* @@ -147,8 +145,9 @@ xfs_growfs_rt_alloc( /* * Reserve log for one block zeroing. */ - if ((error = xfs_trans_reserve(tp, 0, - XFS_GROWRTZERO_LOG_RES(mp), 0, 0, 0))) + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_growrtzero, + 0, 0); + if (error) goto error_cancel; /* * Lock the bitmap inode. @@ -736,8 +735,8 @@ xfs_rtallocate_range( { xfs_rtblock_t end; /* end of the allocated extent */ int error; /* error value */ - xfs_rtblock_t postblock; /* first block allocated > end */ - xfs_rtblock_t preblock; /* first block allocated < start */ + xfs_rtblock_t postblock = 0; /* first block allocated > end */ + xfs_rtblock_t preblock = 0; /* first block allocated < start */ end = start + len - 1; /* @@ -1958,8 +1957,9 @@ xfs_growfs_rt( * Start a transaction, get the log reservation. */ tp = xfs_trans_alloc(mp, XFS_TRANS_GROWFSRT_FREE); - if ((error = xfs_trans_reserve(tp, 0, - XFS_GROWRTFREE_LOG_RES(nmp), 0, 0, 0))) + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_growrtfree, + 0, 0); + if (error) goto error_cancel; /* * Lock out other callers by grabbing the bitmap inode lock. @@ -2148,7 +2148,7 @@ xfs_rtfree_extent( ASSERT(mp->m_rbmip->i_itemp != NULL); ASSERT(xfs_isilocked(mp->m_rbmip, XFS_ILOCK_EXCL)); -#if defined(__KERNEL__) && defined(DEBUG) +#ifdef DEBUG /* * Check to see that this whole range is currently allocated. */ diff --git a/fs/xfs/xfs_rtalloc.h b/fs/xfs/xfs_rtalloc.h index f7f3a35..b2a1a24 100644 --- a/fs/xfs/xfs_rtalloc.h +++ b/fs/xfs/xfs_rtalloc.h @@ -18,58 +18,11 @@ #ifndef __XFS_RTALLOC_H__ #define __XFS_RTALLOC_H__ +/* kernel only definitions and functions */ + struct xfs_mount; struct xfs_trans; -/* Min and max rt extent sizes, specified in bytes */ -#define XFS_MAX_RTEXTSIZE (1024 * 1024 * 1024) /* 1GB */ -#define XFS_DFL_RTEXTSIZE (64 * 1024) /* 64kB */ -#define XFS_MIN_RTEXTSIZE (4 * 1024) /* 4kB */ - -/* - * Constants for bit manipulations. - */ -#define XFS_NBBYLOG 3 /* log2(NBBY) */ -#define XFS_WORDLOG 2 /* log2(sizeof(xfs_rtword_t)) */ -#define XFS_NBWORDLOG (XFS_NBBYLOG + XFS_WORDLOG) -#define XFS_NBWORD (1 << XFS_NBWORDLOG) -#define XFS_WORDMASK ((1 << XFS_WORDLOG) - 1) - -#define XFS_BLOCKSIZE(mp) ((mp)->m_sb.sb_blocksize) -#define XFS_BLOCKMASK(mp) ((mp)->m_blockmask) -#define XFS_BLOCKWSIZE(mp) ((mp)->m_blockwsize) -#define XFS_BLOCKWMASK(mp) ((mp)->m_blockwmask) - -/* - * Summary and bit manipulation macros. - */ -#define XFS_SUMOFFS(mp,ls,bb) ((int)((ls) * (mp)->m_sb.sb_rbmblocks + (bb))) -#define XFS_SUMOFFSTOBLOCK(mp,s) \ - (((s) * (uint)sizeof(xfs_suminfo_t)) >> (mp)->m_sb.sb_blocklog) -#define XFS_SUMPTR(mp,bp,so) \ - ((xfs_suminfo_t *)((bp)->b_addr + \ - (((so) * (uint)sizeof(xfs_suminfo_t)) & XFS_BLOCKMASK(mp)))) - -#define XFS_BITTOBLOCK(mp,bi) ((bi) >> (mp)->m_blkbit_log) -#define XFS_BLOCKTOBIT(mp,bb) ((bb) << (mp)->m_blkbit_log) -#define XFS_BITTOWORD(mp,bi) \ - ((int)(((bi) >> XFS_NBWORDLOG) & XFS_BLOCKWMASK(mp))) - -#define XFS_RTMIN(a,b) ((a) < (b) ? (a) : (b)) -#define XFS_RTMAX(a,b) ((a) > (b) ? (a) : (b)) - -#define XFS_RTLOBIT(w) xfs_lowbit32(w) -#define XFS_RTHIBIT(w) xfs_highbit32(w) - -#if XFS_BIG_BLKNOS -#define XFS_RTBLOCKLOG(b) xfs_highbit64(b) -#else -#define XFS_RTBLOCKLOG(b) xfs_highbit32(b) -#endif - - -#ifdef __KERNEL__ - #ifdef CONFIG_XFS_RT /* * Function prototypes for exported functions. @@ -161,6 +114,4 @@ xfs_rtmount_init( # define xfs_rtunmount_inodes(m) #endif /* CONFIG_XFS_RT */ -#endif /* __KERNEL__ */ - #endif /* __XFS_RTALLOC_H__ */ diff --git a/fs/xfs/xfs_sb.c b/fs/xfs/xfs_sb.c new file mode 100644 index 0000000..a5b59d9 --- /dev/null +++ b/fs/xfs/xfs_sb.c @@ -0,0 +1,834 @@ +/* + * Copyright (c) 2000-2005 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include "xfs.h" +#include "xfs_fs.h" +#include "xfs_format.h" +#include "xfs_bit.h" +#include "xfs_log.h" +#include "xfs_inum.h" +#include "xfs_trans.h" +#include "xfs_trans_priv.h" +#include "xfs_sb.h" +#include "xfs_ag.h" +#include "xfs_mount.h" +#include "xfs_da_btree.h" +#include "xfs_dir2_format.h" +#include "xfs_dir2.h" +#include "xfs_bmap_btree.h" +#include "xfs_alloc_btree.h" +#include "xfs_ialloc_btree.h" +#include "xfs_dinode.h" +#include "xfs_inode.h" +#include "xfs_btree.h" +#include "xfs_ialloc.h" +#include "xfs_alloc.h" +#include "xfs_rtalloc.h" +#include "xfs_bmap.h" +#include "xfs_error.h" +#include "xfs_quota.h" +#include "xfs_fsops.h" +#include "xfs_trace.h" +#include "xfs_cksum.h" +#include "xfs_buf_item.h" + +/* + * Physical superblock buffer manipulations. Shared with libxfs in userspace. + */ + +static const struct { + short offset; + short type; /* 0 = integer + * 1 = binary / string (no translation) + */ +} xfs_sb_info[] = { + { offsetof(xfs_sb_t, sb_magicnum), 0 }, + { offsetof(xfs_sb_t, sb_blocksize), 0 }, + { offsetof(xfs_sb_t, sb_dblocks), 0 }, + { offsetof(xfs_sb_t, sb_rblocks), 0 }, + { offsetof(xfs_sb_t, sb_rextents), 0 }, + { offsetof(xfs_sb_t, sb_uuid), 1 }, + { offsetof(xfs_sb_t, sb_logstart), 0 }, + { offsetof(xfs_sb_t, sb_rootino), 0 }, + { offsetof(xfs_sb_t, sb_rbmino), 0 }, + { offsetof(xfs_sb_t, sb_rsumino), 0 }, + { offsetof(xfs_sb_t, sb_rextsize), 0 }, + { offsetof(xfs_sb_t, sb_agblocks), 0 }, + { offsetof(xfs_sb_t, sb_agcount), 0 }, + { offsetof(xfs_sb_t, sb_rbmblocks), 0 }, + { offsetof(xfs_sb_t, sb_logblocks), 0 }, + { offsetof(xfs_sb_t, sb_versionnum), 0 }, + { offsetof(xfs_sb_t, sb_sectsize), 0 }, + { offsetof(xfs_sb_t, sb_inodesize), 0 }, + { offsetof(xfs_sb_t, sb_inopblock), 0 }, + { offsetof(xfs_sb_t, sb_fname[0]), 1 }, + { offsetof(xfs_sb_t, sb_blocklog), 0 }, + { offsetof(xfs_sb_t, sb_sectlog), 0 }, + { offsetof(xfs_sb_t, sb_inodelog), 0 }, + { offsetof(xfs_sb_t, sb_inopblog), 0 }, + { offsetof(xfs_sb_t, sb_agblklog), 0 }, + { offsetof(xfs_sb_t, sb_rextslog), 0 }, + { offsetof(xfs_sb_t, sb_inprogress), 0 }, + { offsetof(xfs_sb_t, sb_imax_pct), 0 }, + { offsetof(xfs_sb_t, sb_icount), 0 }, + { offsetof(xfs_sb_t, sb_ifree), 0 }, + { offsetof(xfs_sb_t, sb_fdblocks), 0 }, + { offsetof(xfs_sb_t, sb_frextents), 0 }, + { offsetof(xfs_sb_t, sb_uquotino), 0 }, + { offsetof(xfs_sb_t, sb_gquotino), 0 }, + { offsetof(xfs_sb_t, sb_qflags), 0 }, + { offsetof(xfs_sb_t, sb_flags), 0 }, + { offsetof(xfs_sb_t, sb_shared_vn), 0 }, + { offsetof(xfs_sb_t, sb_inoalignmt), 0 }, + { offsetof(xfs_sb_t, sb_unit), 0 }, + { offsetof(xfs_sb_t, sb_width), 0 }, + { offsetof(xfs_sb_t, sb_dirblklog), 0 }, + { offsetof(xfs_sb_t, sb_logsectlog), 0 }, + { offsetof(xfs_sb_t, sb_logsectsize), 0 }, + { offsetof(xfs_sb_t, sb_logsunit), 0 }, + { offsetof(xfs_sb_t, sb_features2), 0 }, + { offsetof(xfs_sb_t, sb_bad_features2), 0 }, + { offsetof(xfs_sb_t, sb_features_compat), 0 }, + { offsetof(xfs_sb_t, sb_features_ro_compat), 0 }, + { offsetof(xfs_sb_t, sb_features_incompat), 0 }, + { offsetof(xfs_sb_t, sb_features_log_incompat), 0 }, + { offsetof(xfs_sb_t, sb_crc), 0 }, + { offsetof(xfs_sb_t, sb_pad), 0 }, + { offsetof(xfs_sb_t, sb_pquotino), 0 }, + { offsetof(xfs_sb_t, sb_lsn), 0 }, + { sizeof(xfs_sb_t), 0 } +}; + +/* + * Reference counting access wrappers to the perag structures. + * Because we never free per-ag structures, the only thing we + * have to protect against changes is the tree structure itself. + */ +struct xfs_perag * +xfs_perag_get( + struct xfs_mount *mp, + xfs_agnumber_t agno) +{ + struct xfs_perag *pag; + int ref = 0; + + rcu_read_lock(); + pag = radix_tree_lookup(&mp->m_perag_tree, agno); + if (pag) { + ASSERT(atomic_read(&pag->pag_ref) >= 0); + ref = atomic_inc_return(&pag->pag_ref); + } + rcu_read_unlock(); + trace_xfs_perag_get(mp, agno, ref, _RET_IP_); + return pag; +} + +/* + * search from @first to find the next perag with the given tag set. + */ +struct xfs_perag * +xfs_perag_get_tag( + struct xfs_mount *mp, + xfs_agnumber_t first, + int tag) +{ + struct xfs_perag *pag; + int found; + int ref; + + rcu_read_lock(); + found = radix_tree_gang_lookup_tag(&mp->m_perag_tree, + (void **)&pag, first, 1, tag); + if (found <= 0) { + rcu_read_unlock(); + return NULL; + } + ref = atomic_inc_return(&pag->pag_ref); + rcu_read_unlock(); + trace_xfs_perag_get_tag(mp, pag->pag_agno, ref, _RET_IP_); + return pag; +} + +void +xfs_perag_put( + struct xfs_perag *pag) +{ + int ref; + + ASSERT(atomic_read(&pag->pag_ref) > 0); + ref = atomic_dec_return(&pag->pag_ref); + trace_xfs_perag_put(pag->pag_mount, pag->pag_agno, ref, _RET_IP_); +} + +/* + * Check the validity of the SB found. + */ +STATIC int +xfs_mount_validate_sb( + xfs_mount_t *mp, + xfs_sb_t *sbp, + bool check_inprogress, + bool check_version) +{ + + /* + * If the log device and data device have the + * same device number, the log is internal. + * Consequently, the sb_logstart should be non-zero. If + * we have a zero sb_logstart in this case, we may be trying to mount + * a volume filesystem in a non-volume manner. + */ + if (sbp->sb_magicnum != XFS_SB_MAGIC) { + xfs_warn(mp, "bad magic number"); + return XFS_ERROR(EWRONGFS); + } + + + if (!xfs_sb_good_version(sbp)) { + xfs_warn(mp, "bad version"); + return XFS_ERROR(EWRONGFS); + } + + /* + * Version 5 superblock feature mask validation. Reject combinations the + * kernel cannot support up front before checking anything else. For + * write validation, we don't need to check feature masks. + */ + if (check_version && XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5) { + xfs_alert(mp, +"Version 5 superblock detected. This kernel has EXPERIMENTAL support enabled!\n" +"Use of these features in this kernel is at your own risk!"); + + if (xfs_sb_has_compat_feature(sbp, + XFS_SB_FEAT_COMPAT_UNKNOWN)) { + xfs_warn(mp, +"Superblock has unknown compatible features (0x%x) enabled.\n" +"Using a more recent kernel is recommended.", + (sbp->sb_features_compat & + XFS_SB_FEAT_COMPAT_UNKNOWN)); + } + + if (xfs_sb_has_ro_compat_feature(sbp, + XFS_SB_FEAT_RO_COMPAT_UNKNOWN)) { + xfs_alert(mp, +"Superblock has unknown read-only compatible features (0x%x) enabled.", + (sbp->sb_features_ro_compat & + XFS_SB_FEAT_RO_COMPAT_UNKNOWN)); + if (!(mp->m_flags & XFS_MOUNT_RDONLY)) { + xfs_warn(mp, +"Attempted to mount read-only compatible filesystem read-write.\n" +"Filesystem can only be safely mounted read only."); + return XFS_ERROR(EINVAL); + } + } + if (xfs_sb_has_incompat_feature(sbp, + XFS_SB_FEAT_INCOMPAT_UNKNOWN)) { + xfs_warn(mp, +"Superblock has unknown incompatible features (0x%x) enabled.\n" +"Filesystem can not be safely mounted by this kernel.", + (sbp->sb_features_incompat & + XFS_SB_FEAT_INCOMPAT_UNKNOWN)); + return XFS_ERROR(EINVAL); + } + } + + if (xfs_sb_version_has_pquotino(sbp)) { + if (sbp->sb_qflags & (XFS_OQUOTA_ENFD | XFS_OQUOTA_CHKD)) { + xfs_notice(mp, + "Version 5 of Super block has XFS_OQUOTA bits.\n"); + return XFS_ERROR(EFSCORRUPTED); + } + } else if (sbp->sb_qflags & (XFS_PQUOTA_ENFD | XFS_GQUOTA_ENFD | + XFS_PQUOTA_CHKD | XFS_GQUOTA_CHKD)) { + xfs_notice(mp, +"Superblock earlier than Version 5 has XFS_[PQ]UOTA_{ENFD|CHKD} bits.\n"); + return XFS_ERROR(EFSCORRUPTED); + } + + if (unlikely( + sbp->sb_logstart == 0 && mp->m_logdev_targp == mp->m_ddev_targp)) { + xfs_warn(mp, + "filesystem is marked as having an external log; " + "specify logdev on the mount command line."); + return XFS_ERROR(EINVAL); + } + + if (unlikely( + sbp->sb_logstart != 0 && mp->m_logdev_targp != mp->m_ddev_targp)) { + xfs_warn(mp, + "filesystem is marked as having an internal log; " + "do not specify logdev on the mount command line."); + return XFS_ERROR(EINVAL); + } + + /* + * More sanity checking. Most of these were stolen directly from + * xfs_repair. + */ + if (unlikely( + sbp->sb_agcount <= 0 || + sbp->sb_sectsize < XFS_MIN_SECTORSIZE || + sbp->sb_sectsize > XFS_MAX_SECTORSIZE || + sbp->sb_sectlog < XFS_MIN_SECTORSIZE_LOG || + sbp->sb_sectlog > XFS_MAX_SECTORSIZE_LOG || + sbp->sb_sectsize != (1 << sbp->sb_sectlog) || + sbp->sb_blocksize < XFS_MIN_BLOCKSIZE || + sbp->sb_blocksize > XFS_MAX_BLOCKSIZE || + sbp->sb_blocklog < XFS_MIN_BLOCKSIZE_LOG || + sbp->sb_blocklog > XFS_MAX_BLOCKSIZE_LOG || + sbp->sb_blocksize != (1 << sbp->sb_blocklog) || + sbp->sb_inodesize < XFS_DINODE_MIN_SIZE || + sbp->sb_inodesize > XFS_DINODE_MAX_SIZE || + sbp->sb_inodelog < XFS_DINODE_MIN_LOG || + sbp->sb_inodelog > XFS_DINODE_MAX_LOG || + sbp->sb_inodesize != (1 << sbp->sb_inodelog) || + (sbp->sb_blocklog - sbp->sb_inodelog != sbp->sb_inopblog) || + (sbp->sb_rextsize * sbp->sb_blocksize > XFS_MAX_RTEXTSIZE) || + (sbp->sb_rextsize * sbp->sb_blocksize < XFS_MIN_RTEXTSIZE) || + (sbp->sb_imax_pct > 100 /* zero sb_imax_pct is valid */) || + sbp->sb_dblocks == 0 || + sbp->sb_dblocks > XFS_MAX_DBLOCKS(sbp) || + sbp->sb_dblocks < XFS_MIN_DBLOCKS(sbp))) { + XFS_CORRUPTION_ERROR("SB sanity check failed", + XFS_ERRLEVEL_LOW, mp, sbp); + return XFS_ERROR(EFSCORRUPTED); + } + + /* + * Until this is fixed only page-sized or smaller data blocks work. + */ + if (unlikely(sbp->sb_blocksize > PAGE_SIZE)) { + xfs_warn(mp, + "File system with blocksize %d bytes. " + "Only pagesize (%ld) or less will currently work.", + sbp->sb_blocksize, PAGE_SIZE); + return XFS_ERROR(ENOSYS); + } + + /* + * Currently only very few inode sizes are supported. + */ + switch (sbp->sb_inodesize) { + case 256: + case 512: + case 1024: + case 2048: + break; + default: + xfs_warn(mp, "inode size of %d bytes not supported", + sbp->sb_inodesize); + return XFS_ERROR(ENOSYS); + } + + if (xfs_sb_validate_fsb_count(sbp, sbp->sb_dblocks) || + xfs_sb_validate_fsb_count(sbp, sbp->sb_rblocks)) { + xfs_warn(mp, + "file system too large to be mounted on this system."); + return XFS_ERROR(EFBIG); + } + + if (check_inprogress && sbp->sb_inprogress) { + xfs_warn(mp, "Offline file system operation in progress!"); + return XFS_ERROR(EFSCORRUPTED); + } + + /* + * Version 1 directory format has never worked on Linux. + */ + if (unlikely(!xfs_sb_version_hasdirv2(sbp))) { + xfs_warn(mp, "file system using version 1 directory format"); + return XFS_ERROR(ENOSYS); + } + + return 0; +} + +void +xfs_sb_quota_from_disk(struct xfs_sb *sbp) +{ + /* + * older mkfs doesn't initialize quota inodes to NULLFSINO. This + * leads to in-core values having two different values for a quota + * inode to be invalid: 0 and NULLFSINO. Change it to a single value + * NULLFSINO. + * + * Note that this change affect only the in-core values. These + * values are not written back to disk unless any quota information + * is written to the disk. Even in that case, sb_pquotino field is + * not written to disk unless the superblock supports pquotino. + */ + if (sbp->sb_uquotino == 0) + sbp->sb_uquotino = NULLFSINO; + if (sbp->sb_gquotino == 0) + sbp->sb_gquotino = NULLFSINO; + if (sbp->sb_pquotino == 0) + sbp->sb_pquotino = NULLFSINO; + + /* + * We need to do these manipilations only if we are working + * with an older version of on-disk superblock. + */ + if (xfs_sb_version_has_pquotino(sbp)) + return; + + if (sbp->sb_qflags & XFS_OQUOTA_ENFD) + sbp->sb_qflags |= (sbp->sb_qflags & XFS_PQUOTA_ACCT) ? + XFS_PQUOTA_ENFD : XFS_GQUOTA_ENFD; + if (sbp->sb_qflags & XFS_OQUOTA_CHKD) + sbp->sb_qflags |= (sbp->sb_qflags & XFS_PQUOTA_ACCT) ? + XFS_PQUOTA_CHKD : XFS_GQUOTA_CHKD; + sbp->sb_qflags &= ~(XFS_OQUOTA_ENFD | XFS_OQUOTA_CHKD); + + if (sbp->sb_qflags & XFS_PQUOTA_ACCT) { + /* + * In older version of superblock, on-disk superblock only + * has sb_gquotino, and in-core superblock has both sb_gquotino + * and sb_pquotino. But, only one of them is supported at any + * point of time. So, if PQUOTA is set in disk superblock, + * copy over sb_gquotino to sb_pquotino. + */ + sbp->sb_pquotino = sbp->sb_gquotino; + sbp->sb_gquotino = NULLFSINO; + } +} + +void +xfs_sb_from_disk( + struct xfs_sb *to, + xfs_dsb_t *from) +{ + to->sb_magicnum = be32_to_cpu(from->sb_magicnum); + to->sb_blocksize = be32_to_cpu(from->sb_blocksize); + to->sb_dblocks = be64_to_cpu(from->sb_dblocks); + to->sb_rblocks = be64_to_cpu(from->sb_rblocks); + to->sb_rextents = be64_to_cpu(from->sb_rextents); + memcpy(&to->sb_uuid, &from->sb_uuid, sizeof(to->sb_uuid)); + to->sb_logstart = be64_to_cpu(from->sb_logstart); + to->sb_rootino = be64_to_cpu(from->sb_rootino); + to->sb_rbmino = be64_to_cpu(from->sb_rbmino); + to->sb_rsumino = be64_to_cpu(from->sb_rsumino); + to->sb_rextsize = be32_to_cpu(from->sb_rextsize); + to->sb_agblocks = be32_to_cpu(from->sb_agblocks); + to->sb_agcount = be32_to_cpu(from->sb_agcount); + to->sb_rbmblocks = be32_to_cpu(from->sb_rbmblocks); + to->sb_logblocks = be32_to_cpu(from->sb_logblocks); + to->sb_versionnum = be16_to_cpu(from->sb_versionnum); + to->sb_sectsize = be16_to_cpu(from->sb_sectsize); + to->sb_inodesize = be16_to_cpu(from->sb_inodesize); + to->sb_inopblock = be16_to_cpu(from->sb_inopblock); + memcpy(&to->sb_fname, &from->sb_fname, sizeof(to->sb_fname)); + to->sb_blocklog = from->sb_blocklog; + to->sb_sectlog = from->sb_sectlog; + to->sb_inodelog = from->sb_inodelog; + to->sb_inopblog = from->sb_inopblog; + to->sb_agblklog = from->sb_agblklog; + to->sb_rextslog = from->sb_rextslog; + to->sb_inprogress = from->sb_inprogress; + to->sb_imax_pct = from->sb_imax_pct; + to->sb_icount = be64_to_cpu(from->sb_icount); + to->sb_ifree = be64_to_cpu(from->sb_ifree); + to->sb_fdblocks = be64_to_cpu(from->sb_fdblocks); + to->sb_frextents = be64_to_cpu(from->sb_frextents); + to->sb_uquotino = be64_to_cpu(from->sb_uquotino); + to->sb_gquotino = be64_to_cpu(from->sb_gquotino); + to->sb_qflags = be16_to_cpu(from->sb_qflags); + to->sb_flags = from->sb_flags; + to->sb_shared_vn = from->sb_shared_vn; + to->sb_inoalignmt = be32_to_cpu(from->sb_inoalignmt); + to->sb_unit = be32_to_cpu(from->sb_unit); + to->sb_width = be32_to_cpu(from->sb_width); + to->sb_dirblklog = from->sb_dirblklog; + to->sb_logsectlog = from->sb_logsectlog; + to->sb_logsectsize = be16_to_cpu(from->sb_logsectsize); + to->sb_logsunit = be32_to_cpu(from->sb_logsunit); + to->sb_features2 = be32_to_cpu(from->sb_features2); + to->sb_bad_features2 = be32_to_cpu(from->sb_bad_features2); + to->sb_features_compat = be32_to_cpu(from->sb_features_compat); + to->sb_features_ro_compat = be32_to_cpu(from->sb_features_ro_compat); + to->sb_features_incompat = be32_to_cpu(from->sb_features_incompat); + to->sb_features_log_incompat = + be32_to_cpu(from->sb_features_log_incompat); + to->sb_pad = 0; + to->sb_pquotino = be64_to_cpu(from->sb_pquotino); + to->sb_lsn = be64_to_cpu(from->sb_lsn); +} + +static inline void +xfs_sb_quota_to_disk( + xfs_dsb_t *to, + xfs_sb_t *from, + __int64_t *fields) +{ + __uint16_t qflags = from->sb_qflags; + + /* + * We need to do these manipilations only if we are working + * with an older version of on-disk superblock. + */ + if (xfs_sb_version_has_pquotino(from)) + return; + + if (*fields & XFS_SB_QFLAGS) { + /* + * The in-core version of sb_qflags do not have + * XFS_OQUOTA_* flags, whereas the on-disk version + * does. So, convert incore XFS_{PG}QUOTA_* flags + * to on-disk XFS_OQUOTA_* flags. + */ + qflags &= ~(XFS_PQUOTA_ENFD | XFS_PQUOTA_CHKD | + XFS_GQUOTA_ENFD | XFS_GQUOTA_CHKD); + + if (from->sb_qflags & + (XFS_PQUOTA_ENFD | XFS_GQUOTA_ENFD)) + qflags |= XFS_OQUOTA_ENFD; + if (from->sb_qflags & + (XFS_PQUOTA_CHKD | XFS_GQUOTA_CHKD)) + qflags |= XFS_OQUOTA_CHKD; + to->sb_qflags = cpu_to_be16(qflags); + *fields &= ~XFS_SB_QFLAGS; + } + + /* + * GQUOTINO and PQUOTINO cannot be used together in versions + * of superblock that do not have pquotino. from->sb_flags + * tells us which quota is active and should be copied to + * disk. + */ + if ((*fields & XFS_SB_GQUOTINO) && + (from->sb_qflags & XFS_GQUOTA_ACCT)) + to->sb_gquotino = cpu_to_be64(from->sb_gquotino); + else if ((*fields & XFS_SB_PQUOTINO) && + (from->sb_qflags & XFS_PQUOTA_ACCT)) + to->sb_gquotino = cpu_to_be64(from->sb_pquotino); + + *fields &= ~(XFS_SB_PQUOTINO | XFS_SB_GQUOTINO); +} + +/* + * Copy in core superblock to ondisk one. + * + * The fields argument is mask of superblock fields to copy. + */ +void +xfs_sb_to_disk( + xfs_dsb_t *to, + xfs_sb_t *from, + __int64_t fields) +{ + xfs_caddr_t to_ptr = (xfs_caddr_t)to; + xfs_caddr_t from_ptr = (xfs_caddr_t)from; + xfs_sb_field_t f; + int first; + int size; + + ASSERT(fields); + if (!fields) + return; + + xfs_sb_quota_to_disk(to, from, &fields); + while (fields) { + f = (xfs_sb_field_t)xfs_lowbit64((__uint64_t)fields); + first = xfs_sb_info[f].offset; + size = xfs_sb_info[f + 1].offset - first; + + ASSERT(xfs_sb_info[f].type == 0 || xfs_sb_info[f].type == 1); + + if (size == 1 || xfs_sb_info[f].type == 1) { + memcpy(to_ptr + first, from_ptr + first, size); + } else { + switch (size) { + case 2: + *(__be16 *)(to_ptr + first) = + cpu_to_be16(*(__u16 *)(from_ptr + first)); + break; + case 4: + *(__be32 *)(to_ptr + first) = + cpu_to_be32(*(__u32 *)(from_ptr + first)); + break; + case 8: + *(__be64 *)(to_ptr + first) = + cpu_to_be64(*(__u64 *)(from_ptr + first)); + break; + default: + ASSERT(0); + } + } + + fields &= ~(1LL << f); + } +} + +static int +xfs_sb_verify( + struct xfs_buf *bp, + bool check_version) +{ + struct xfs_mount *mp = bp->b_target->bt_mount; + struct xfs_sb sb; + + xfs_sb_from_disk(&sb, XFS_BUF_TO_SBP(bp)); + + /* + * Only check the in progress field for the primary superblock as + * mkfs.xfs doesn't clear it from secondary superblocks. + */ + return xfs_mount_validate_sb(mp, &sb, bp->b_bn == XFS_SB_DADDR, + check_version); +} + +/* + * If the superblock has the CRC feature bit set or the CRC field is non-null, + * check that the CRC is valid. We check the CRC field is non-null because a + * single bit error could clear the feature bit and unused parts of the + * superblock are supposed to be zero. Hence a non-null crc field indicates that + * we've potentially lost a feature bit and we should check it anyway. + */ +static void +xfs_sb_read_verify( + struct xfs_buf *bp) +{ + struct xfs_mount *mp = bp->b_target->bt_mount; + struct xfs_dsb *dsb = XFS_BUF_TO_SBP(bp); + int error; + + /* + * open code the version check to avoid needing to convert the entire + * superblock from disk order just to check the version number + */ + if (dsb->sb_magicnum == cpu_to_be32(XFS_SB_MAGIC) && + (((be16_to_cpu(dsb->sb_versionnum) & XFS_SB_VERSION_NUMBITS) == + XFS_SB_VERSION_5) || + dsb->sb_crc != 0)) { + + if (!xfs_verify_cksum(bp->b_addr, be16_to_cpu(dsb->sb_sectsize), + offsetof(struct xfs_sb, sb_crc))) { + error = EFSCORRUPTED; + goto out_error; + } + } + error = xfs_sb_verify(bp, true); + +out_error: + if (error) { + XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, + mp, bp->b_addr); + xfs_buf_ioerror(bp, error); + } +} + +/* + * We may be probed for a filesystem match, so we may not want to emit + * messages when the superblock buffer is not actually an XFS superblock. + * If we find an XFS superblock, then run a normal, noisy mount because we are + * really going to mount it and want to know about errors. + */ +static void +xfs_sb_quiet_read_verify( + struct xfs_buf *bp) +{ + struct xfs_dsb *dsb = XFS_BUF_TO_SBP(bp); + + + if (dsb->sb_magicnum == cpu_to_be32(XFS_SB_MAGIC)) { + /* XFS filesystem, verify noisily! */ + xfs_sb_read_verify(bp); + return; + } + /* quietly fail */ + xfs_buf_ioerror(bp, EWRONGFS); +} + +static void +xfs_sb_write_verify( + struct xfs_buf *bp) +{ + struct xfs_mount *mp = bp->b_target->bt_mount; + struct xfs_buf_log_item *bip = bp->b_fspriv; + int error; + + error = xfs_sb_verify(bp, false); + if (error) { + XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, + mp, bp->b_addr); + xfs_buf_ioerror(bp, error); + return; + } + + if (!xfs_sb_version_hascrc(&mp->m_sb)) + return; + + if (bip) + XFS_BUF_TO_SBP(bp)->sb_lsn = cpu_to_be64(bip->bli_item.li_lsn); + + xfs_update_cksum(bp->b_addr, BBTOB(bp->b_length), + offsetof(struct xfs_sb, sb_crc)); +} + +const struct xfs_buf_ops xfs_sb_buf_ops = { + .verify_read = xfs_sb_read_verify, + .verify_write = xfs_sb_write_verify, +}; + +const struct xfs_buf_ops xfs_sb_quiet_buf_ops = { + .verify_read = xfs_sb_quiet_read_verify, + .verify_write = xfs_sb_write_verify, +}; + +/* + * xfs_mount_common + * + * Mount initialization code establishing various mount + * fields from the superblock associated with the given + * mount structure + */ +void +xfs_sb_mount_common( + struct xfs_mount *mp, + struct xfs_sb *sbp) +{ + mp->m_agfrotor = mp->m_agirotor = 0; + spin_lock_init(&mp->m_agirotor_lock); + mp->m_maxagi = mp->m_sb.sb_agcount; + mp->m_blkbit_log = sbp->sb_blocklog + XFS_NBBYLOG; + mp->m_blkbb_log = sbp->sb_blocklog - BBSHIFT; + mp->m_sectbb_log = sbp->sb_sectlog - BBSHIFT; + mp->m_agno_log = xfs_highbit32(sbp->sb_agcount - 1) + 1; + mp->m_agino_log = sbp->sb_inopblog + sbp->sb_agblklog; + mp->m_blockmask = sbp->sb_blocksize - 1; + mp->m_blockwsize = sbp->sb_blocksize >> XFS_WORDLOG; + mp->m_blockwmask = mp->m_blockwsize - 1; + + mp->m_alloc_mxr[0] = xfs_allocbt_maxrecs(mp, sbp->sb_blocksize, 1); + mp->m_alloc_mxr[1] = xfs_allocbt_maxrecs(mp, sbp->sb_blocksize, 0); + mp->m_alloc_mnr[0] = mp->m_alloc_mxr[0] / 2; + mp->m_alloc_mnr[1] = mp->m_alloc_mxr[1] / 2; + + mp->m_inobt_mxr[0] = xfs_inobt_maxrecs(mp, sbp->sb_blocksize, 1); + mp->m_inobt_mxr[1] = xfs_inobt_maxrecs(mp, sbp->sb_blocksize, 0); + mp->m_inobt_mnr[0] = mp->m_inobt_mxr[0] / 2; + mp->m_inobt_mnr[1] = mp->m_inobt_mxr[1] / 2; + + mp->m_bmap_dmxr[0] = xfs_bmbt_maxrecs(mp, sbp->sb_blocksize, 1); + mp->m_bmap_dmxr[1] = xfs_bmbt_maxrecs(mp, sbp->sb_blocksize, 0); + mp->m_bmap_dmnr[0] = mp->m_bmap_dmxr[0] / 2; + mp->m_bmap_dmnr[1] = mp->m_bmap_dmxr[1] / 2; + + mp->m_bsize = XFS_FSB_TO_BB(mp, 1); + mp->m_ialloc_inos = (int)MAX((__uint16_t)XFS_INODES_PER_CHUNK, + sbp->sb_inopblock); + mp->m_ialloc_blks = mp->m_ialloc_inos >> sbp->sb_inopblog; +} + +/* + * xfs_initialize_perag_data + * + * Read in each per-ag structure so we can count up the number of + * allocated inodes, free inodes and used filesystem blocks as this + * information is no longer persistent in the superblock. Once we have + * this information, write it into the in-core superblock structure. + */ +int +xfs_initialize_perag_data( + struct xfs_mount *mp, + xfs_agnumber_t agcount) +{ + xfs_agnumber_t index; + xfs_perag_t *pag; + xfs_sb_t *sbp = &mp->m_sb; + uint64_t ifree = 0; + uint64_t ialloc = 0; + uint64_t bfree = 0; + uint64_t bfreelst = 0; + uint64_t btree = 0; + int error; + + for (index = 0; index < agcount; index++) { + /* + * read the agf, then the agi. This gets us + * all the information we need and populates the + * per-ag structures for us. + */ + error = xfs_alloc_pagf_init(mp, NULL, index, 0); + if (error) + return error; + + error = xfs_ialloc_pagi_init(mp, NULL, index); + if (error) + return error; + pag = xfs_perag_get(mp, index); + ifree += pag->pagi_freecount; + ialloc += pag->pagi_count; + bfree += pag->pagf_freeblks; + bfreelst += pag->pagf_flcount; + btree += pag->pagf_btreeblks; + xfs_perag_put(pag); + } + /* + * Overwrite incore superblock counters with just-read data + */ + spin_lock(&mp->m_sb_lock); + sbp->sb_ifree = ifree; + sbp->sb_icount = ialloc; + sbp->sb_fdblocks = bfree + bfreelst + btree; + spin_unlock(&mp->m_sb_lock); + + /* Fixup the per-cpu counters as well. */ + xfs_icsb_reinit_counters(mp); + + return 0; +} + +/* + * xfs_mod_sb() can be used to copy arbitrary changes to the + * in-core superblock into the superblock buffer to be logged. + * It does not provide the higher level of locking that is + * needed to protect the in-core superblock from concurrent + * access. + */ +void +xfs_mod_sb(xfs_trans_t *tp, __int64_t fields) +{ + xfs_buf_t *bp; + int first; + int last; + xfs_mount_t *mp; + xfs_sb_field_t f; + + ASSERT(fields); + if (!fields) + return; + mp = tp->t_mountp; + bp = xfs_trans_getsb(tp, mp, 0); + first = sizeof(xfs_sb_t); + last = 0; + + /* translate/copy */ + + xfs_sb_to_disk(XFS_BUF_TO_SBP(bp), &mp->m_sb, fields); + + /* find modified range */ + f = (xfs_sb_field_t)xfs_highbit64((__uint64_t)fields); + ASSERT((1LL << f) & XFS_SB_MOD_BITS); + last = xfs_sb_info[f + 1].offset - 1; + + f = (xfs_sb_field_t)xfs_lowbit64((__uint64_t)fields); + ASSERT((1LL << f) & XFS_SB_MOD_BITS); + first = xfs_sb_info[f].offset; + + xfs_trans_buf_set_type(tp, bp, XFS_BLFT_SB_BUF); + xfs_trans_log_buf(tp, bp, first, last); +} diff --git a/fs/xfs/xfs_sb.h b/fs/xfs/xfs_sb.h index 78f9e70..6835b44 100644 --- a/fs/xfs/xfs_sb.h +++ b/fs/xfs/xfs_sb.h @@ -26,6 +26,7 @@ struct xfs_buf; struct xfs_mount; +struct xfs_trans; #define XFS_SB_MAGIC 0x58465342 /* 'XFSB' */ #define XFS_SB_VERSION_1 1 /* 5.3, 6.0.1, 6.1 */ @@ -83,11 +84,13 @@ struct xfs_mount; #define XFS_SB_VERSION2_PARENTBIT 0x00000010 /* parent pointers */ #define XFS_SB_VERSION2_PROJID32BIT 0x00000080 /* 32 bit project id */ #define XFS_SB_VERSION2_CRCBIT 0x00000100 /* metadata CRCs */ +#define XFS_SB_VERSION2_FTYPE 0x00000200 /* inode type in dir */ #define XFS_SB_VERSION2_OKREALFBITS \ (XFS_SB_VERSION2_LAZYSBCOUNTBIT | \ XFS_SB_VERSION2_ATTR2BIT | \ - XFS_SB_VERSION2_PROJID32BIT) + XFS_SB_VERSION2_PROJID32BIT | \ + XFS_SB_VERSION2_FTYPE) #define XFS_SB_VERSION2_OKSASHFBITS \ (0) #define XFS_SB_VERSION2_OKREALBITS \ @@ -354,15 +357,8 @@ static inline int xfs_sb_good_version(xfs_sb_t *sbp) (sbp->sb_features2 & ~XFS_SB_VERSION2_OKREALBITS))) return 0; -#ifdef __KERNEL__ if (sbp->sb_shared_vn > XFS_SB_MAX_SHARED_VN) return 0; -#else - if ((sbp->sb_versionnum & XFS_SB_VERSION_SHAREDBIT) && - sbp->sb_shared_vn > XFS_SB_MAX_SHARED_VN) - return 0; -#endif - return 1; } if (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5) @@ -554,12 +550,13 @@ static inline int xfs_sb_version_hasprojid32bit(xfs_sb_t *sbp) (sbp->sb_features2 & XFS_SB_VERSION2_PROJID32BIT)); } -static inline int xfs_sb_version_hascrc(xfs_sb_t *sbp) +static inline void xfs_sb_version_addprojid32bit(xfs_sb_t *sbp) { - return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5; + sbp->sb_versionnum |= XFS_SB_VERSION_MOREBITSBIT; + sbp->sb_features2 |= XFS_SB_VERSION2_PROJID32BIT; + sbp->sb_bad_features2 |= XFS_SB_VERSION2_PROJID32BIT; } - /* * Extended v5 superblock feature masks. These are to be used for new v5 * superblock features only. @@ -598,7 +595,10 @@ xfs_sb_has_ro_compat_feature( return (sbp->sb_features_ro_compat & feature) != 0; } -#define XFS_SB_FEAT_INCOMPAT_ALL 0 +#define XFS_SB_FEAT_INCOMPAT_FTYPE (1 << 0) /* filetype in dirent */ +#define XFS_SB_FEAT_INCOMPAT_ALL \ + (XFS_SB_FEAT_INCOMPAT_FTYPE) + #define XFS_SB_FEAT_INCOMPAT_UNKNOWN ~XFS_SB_FEAT_INCOMPAT_ALL static inline bool xfs_sb_has_incompat_feature( @@ -618,16 +618,39 @@ xfs_sb_has_incompat_log_feature( return (sbp->sb_features_log_incompat & feature) != 0; } -static inline bool -xfs_is_quota_inode(struct xfs_sb *sbp, xfs_ino_t ino) +/* + * V5 superblock specific feature checks + */ +static inline int xfs_sb_version_hascrc(xfs_sb_t *sbp) { - return (ino == sbp->sb_uquotino || ino == sbp->sb_gquotino); + return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5; +} + +static inline int xfs_sb_version_has_pquotino(xfs_sb_t *sbp) +{ + return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5; +} + +static inline int xfs_sb_version_hasftype(struct xfs_sb *sbp) +{ + return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5 && + xfs_sb_has_incompat_feature(sbp, XFS_SB_FEAT_INCOMPAT_FTYPE)) || + (xfs_sb_version_hasmorebits(sbp) && + (sbp->sb_features2 & XFS_SB_VERSION2_FTYPE)); } /* * end of superblock version macros */ +static inline bool +xfs_is_quota_inode(struct xfs_sb *sbp, xfs_ino_t ino) +{ + return (ino == sbp->sb_uquotino || + ino == sbp->sb_gquotino || + ino == sbp->sb_pquotino); +} + #define XFS_SB_DADDR ((xfs_daddr_t)0) /* daddr in filesystem/ag */ #define XFS_SB_BLOCK(mp) XFS_HDR_BLOCK(mp, XFS_SB_DADDR) #define XFS_BUF_TO_SBP(bp) ((xfs_dsb_t *)((bp)->b_addr)) @@ -660,4 +683,23 @@ xfs_is_quota_inode(struct xfs_sb *sbp, xfs_ino_t ino) #define XFS_B_TO_FSBT(mp,b) (((__uint64_t)(b)) >> (mp)->m_sb.sb_blocklog) #define XFS_B_FSB_OFFSET(mp,b) ((b) & (mp)->m_blockmask) +/* + * perag get/put wrappers for ref counting + */ +extern struct xfs_perag *xfs_perag_get(struct xfs_mount *, xfs_agnumber_t); +extern struct xfs_perag *xfs_perag_get_tag(struct xfs_mount *, xfs_agnumber_t, + int tag); +extern void xfs_perag_put(struct xfs_perag *pag); +extern int xfs_initialize_perag_data(struct xfs_mount *, xfs_agnumber_t); + +extern void xfs_sb_calc_crc(struct xfs_buf *); +extern void xfs_mod_sb(struct xfs_trans *, __int64_t); +extern void xfs_sb_mount_common(struct xfs_mount *, struct xfs_sb *); +extern void xfs_sb_from_disk(struct xfs_sb *, struct xfs_dsb *); +extern void xfs_sb_to_disk(struct xfs_dsb *, struct xfs_sb *, __int64_t); +extern void xfs_sb_quota_from_disk(struct xfs_sb *sbp); + +extern const struct xfs_buf_ops xfs_sb_buf_ops; +extern const struct xfs_buf_ops xfs_sb_quiet_buf_ops; + #endif /* __XFS_SB_H__ */ diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index 1d68ffc..979a77d 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -17,12 +17,12 @@ */ #include "xfs.h" +#include "xfs_format.h" #include "xfs_log.h" #include "xfs_inum.h" #include "xfs_trans.h" #include "xfs_sb.h" #include "xfs_ag.h" -#include "xfs_dir2.h" #include "xfs_alloc.h" #include "xfs_quota.h" #include "xfs_mount.h" @@ -40,12 +40,12 @@ #include "xfs_fsops.h" #include "xfs_attr.h" #include "xfs_buf_item.h" -#include "xfs_utils.h" -#include "xfs_vnodeops.h" #include "xfs_log_priv.h" #include "xfs_trans_priv.h" #include "xfs_filestream.h" #include "xfs_da_btree.h" +#include "xfs_dir2_format.h" +#include "xfs_dir2.h" #include "xfs_extfree_item.h" #include "xfs_mru_cache.h" #include "xfs_inode_item.h" @@ -421,12 +421,6 @@ xfs_parseargs( } #endif - if ((mp->m_qflags & (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE)) && - (mp->m_qflags & (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE))) { - xfs_warn(mp, "cannot mount with both project and group quota"); - return EINVAL; - } - if ((dsunit && !dswidth) || (!dsunit && dswidth)) { xfs_warn(mp, "sunit and swidth must be specified together"); return EINVAL; @@ -556,14 +550,13 @@ xfs_showargs( else if (mp->m_qflags & XFS_UQUOTA_ACCT) seq_puts(m, "," MNTOPT_UQUOTANOENF); - /* Either project or group quotas can be active, not both */ - if (mp->m_qflags & XFS_PQUOTA_ACCT) { if (mp->m_qflags & XFS_PQUOTA_ENFD) seq_puts(m, "," MNTOPT_PRJQUOTA); else seq_puts(m, "," MNTOPT_PQUOTANOENF); - } else if (mp->m_qflags & XFS_GQUOTA_ACCT) { + } + if (mp->m_qflags & XFS_GQUOTA_ACCT) { if (mp->m_qflags & XFS_GQUOTA_ENFD) seq_puts(m, "," MNTOPT_GRPQUOTA); else @@ -870,17 +863,17 @@ xfs_init_mount_workqueues( goto out_destroy_unwritten; mp->m_reclaim_workqueue = alloc_workqueue("xfs-reclaim/%s", - WQ_NON_REENTRANT, 0, mp->m_fsname); + 0, 0, mp->m_fsname); if (!mp->m_reclaim_workqueue) goto out_destroy_cil; mp->m_log_workqueue = alloc_workqueue("xfs-log/%s", - WQ_NON_REENTRANT, 0, mp->m_fsname); + 0, 0, mp->m_fsname); if (!mp->m_log_workqueue) goto out_destroy_reclaim; mp->m_eofblocks_workqueue = alloc_workqueue("xfs-eofblocks/%s", - WQ_NON_REENTRANT, 0, mp->m_fsname); + 0, 0, mp->m_fsname); if (!mp->m_eofblocks_workqueue) goto out_destroy_log; @@ -1396,6 +1389,14 @@ xfs_finish_flags( return XFS_ERROR(EROFS); } + if ((mp->m_qflags & (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE)) && + (mp->m_qflags & (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE)) && + !xfs_sb_version_has_pquotino(&mp->m_sb)) { + xfs_warn(mp, + "Super block does not support project and group quota together"); + return XFS_ERROR(EINVAL); + } + return 0; } diff --git a/fs/xfs/xfs_symlink.c b/fs/xfs/xfs_symlink.c index f4895b6..2f2a7c0 100644 --- a/fs/xfs/xfs_symlink.c +++ b/fs/xfs/xfs_symlink.c @@ -18,200 +18,29 @@ */ #include "xfs.h" #include "xfs_fs.h" -#include "xfs_types.h" +#include "xfs_format.h" #include "xfs_bit.h" #include "xfs_log.h" #include "xfs_trans.h" #include "xfs_sb.h" #include "xfs_ag.h" -#include "xfs_dir2.h" #include "xfs_mount.h" #include "xfs_da_btree.h" +#include "xfs_dir2_format.h" +#include "xfs_dir2.h" #include "xfs_bmap_btree.h" #include "xfs_ialloc_btree.h" #include "xfs_dinode.h" #include "xfs_inode.h" -#include "xfs_inode_item.h" -#include "xfs_itable.h" #include "xfs_ialloc.h" #include "xfs_alloc.h" #include "xfs_bmap.h" +#include "xfs_bmap_util.h" #include "xfs_error.h" #include "xfs_quota.h" -#include "xfs_utils.h" #include "xfs_trans_space.h" -#include "xfs_log_priv.h" #include "xfs_trace.h" #include "xfs_symlink.h" -#include "xfs_cksum.h" -#include "xfs_buf_item.h" - - -/* - * Each contiguous block has a header, so it is not just a simple pathlen - * to FSB conversion. - */ -int -xfs_symlink_blocks( - struct xfs_mount *mp, - int pathlen) -{ - int buflen = XFS_SYMLINK_BUF_SPACE(mp, mp->m_sb.sb_blocksize); - - return (pathlen + buflen - 1) / buflen; -} - -static int -xfs_symlink_hdr_set( - struct xfs_mount *mp, - xfs_ino_t ino, - uint32_t offset, - uint32_t size, - struct xfs_buf *bp) -{ - struct xfs_dsymlink_hdr *dsl = bp->b_addr; - - if (!xfs_sb_version_hascrc(&mp->m_sb)) - return 0; - - dsl->sl_magic = cpu_to_be32(XFS_SYMLINK_MAGIC); - dsl->sl_offset = cpu_to_be32(offset); - dsl->sl_bytes = cpu_to_be32(size); - uuid_copy(&dsl->sl_uuid, &mp->m_sb.sb_uuid); - dsl->sl_owner = cpu_to_be64(ino); - dsl->sl_blkno = cpu_to_be64(bp->b_bn); - bp->b_ops = &xfs_symlink_buf_ops; - - return sizeof(struct xfs_dsymlink_hdr); -} - -/* - * Checking of the symlink header is split into two parts. the verifier does - * CRC, location and bounds checking, the unpacking function checks the path - * parameters and owner. - */ -bool -xfs_symlink_hdr_ok( - struct xfs_mount *mp, - xfs_ino_t ino, - uint32_t offset, - uint32_t size, - struct xfs_buf *bp) -{ - struct xfs_dsymlink_hdr *dsl = bp->b_addr; - - if (offset != be32_to_cpu(dsl->sl_offset)) - return false; - if (size != be32_to_cpu(dsl->sl_bytes)) - return false; - if (ino != be64_to_cpu(dsl->sl_owner)) - return false; - - /* ok */ - return true; -} - -static bool -xfs_symlink_verify( - struct xfs_buf *bp) -{ - struct xfs_mount *mp = bp->b_target->bt_mount; - struct xfs_dsymlink_hdr *dsl = bp->b_addr; - - if (!xfs_sb_version_hascrc(&mp->m_sb)) - return false; - if (dsl->sl_magic != cpu_to_be32(XFS_SYMLINK_MAGIC)) - return false; - if (!uuid_equal(&dsl->sl_uuid, &mp->m_sb.sb_uuid)) - return false; - if (bp->b_bn != be64_to_cpu(dsl->sl_blkno)) - return false; - if (be32_to_cpu(dsl->sl_offset) + - be32_to_cpu(dsl->sl_bytes) >= MAXPATHLEN) - return false; - if (dsl->sl_owner == 0) - return false; - - return true; -} - -static void -xfs_symlink_read_verify( - struct xfs_buf *bp) -{ - struct xfs_mount *mp = bp->b_target->bt_mount; - - /* no verification of non-crc buffers */ - if (!xfs_sb_version_hascrc(&mp->m_sb)) - return; - - if (!xfs_verify_cksum(bp->b_addr, BBTOB(bp->b_length), - offsetof(struct xfs_dsymlink_hdr, sl_crc)) || - !xfs_symlink_verify(bp)) { - XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr); - xfs_buf_ioerror(bp, EFSCORRUPTED); - } -} - -static void -xfs_symlink_write_verify( - struct xfs_buf *bp) -{ - struct xfs_mount *mp = bp->b_target->bt_mount; - struct xfs_buf_log_item *bip = bp->b_fspriv; - - /* no verification of non-crc buffers */ - if (!xfs_sb_version_hascrc(&mp->m_sb)) - return; - - if (!xfs_symlink_verify(bp)) { - XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr); - xfs_buf_ioerror(bp, EFSCORRUPTED); - return; - } - - if (bip) { - struct xfs_dsymlink_hdr *dsl = bp->b_addr; - dsl->sl_lsn = cpu_to_be64(bip->bli_item.li_lsn); - } - xfs_update_cksum(bp->b_addr, BBTOB(bp->b_length), - offsetof(struct xfs_dsymlink_hdr, sl_crc)); -} - -const struct xfs_buf_ops xfs_symlink_buf_ops = { - .verify_read = xfs_symlink_read_verify, - .verify_write = xfs_symlink_write_verify, -}; - -void -xfs_symlink_local_to_remote( - struct xfs_trans *tp, - struct xfs_buf *bp, - struct xfs_inode *ip, - struct xfs_ifork *ifp) -{ - struct xfs_mount *mp = ip->i_mount; - char *buf; - - if (!xfs_sb_version_hascrc(&mp->m_sb)) { - bp->b_ops = NULL; - memcpy(bp->b_addr, ifp->if_u1.if_data, ifp->if_bytes); - return; - } - - /* - * As this symlink fits in an inode literal area, it must also fit in - * the smallest buffer the filesystem supports. - */ - ASSERT(BBTOB(bp->b_length) >= - ifp->if_bytes + sizeof(struct xfs_dsymlink_hdr)); - - bp->b_ops = &xfs_symlink_buf_ops; - - buf = bp->b_addr; - buf += xfs_symlink_hdr_set(mp, ip->i_ino, 0, ifp->if_bytes, bp); - memcpy(buf, ifp->if_u1.if_data, ifp->if_bytes); -} /* ----- Kernel only functions below ----- */ STATIC int @@ -386,8 +215,11 @@ xfs_symlink( /* * Make sure that we have allocated dquot(s) on disk. */ - error = xfs_qm_vop_dqalloc(dp, current_fsuid(), current_fsgid(), prid, - XFS_QMOPT_QUOTALL | XFS_QMOPT_INHERIT, &udqp, &gdqp, &pdqp); + error = xfs_qm_vop_dqalloc(dp, + xfs_kuid_to_uid(current_fsuid()), + xfs_kgid_to_gid(current_fsgid()), prid, + XFS_QMOPT_QUOTALL | XFS_QMOPT_INHERIT, + &udqp, &gdqp, &pdqp); if (error) goto std_return; @@ -402,12 +234,10 @@ xfs_symlink( else fs_blocks = xfs_symlink_blocks(mp, pathlen); resblks = XFS_SYMLINK_SPACE_RES(mp, link_name->len, fs_blocks); - error = xfs_trans_reserve(tp, resblks, XFS_SYMLINK_LOG_RES(mp), 0, - XFS_TRANS_PERM_LOG_RES, XFS_SYMLINK_LOG_COUNT); + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_symlink, resblks, 0); if (error == ENOSPC && fs_blocks == 0) { resblks = 0; - error = xfs_trans_reserve(tp, 0, XFS_SYMLINK_LOG_RES(mp), 0, - XFS_TRANS_PERM_LOG_RES, XFS_SYMLINK_LOG_COUNT); + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_symlink, 0, 0); } if (error) { cancel_flags = 0; @@ -710,8 +540,8 @@ xfs_inactive_symlink_rmt( * Put an itruncate log reservation in the new transaction * for our caller. */ - if ((error = xfs_trans_reserve(tp, 0, XFS_ITRUNCATE_LOG_RES(mp), 0, - XFS_TRANS_PERM_LOG_RES, XFS_ITRUNCATE_LOG_COUNT))) { + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_itruncate, 0, 0); + if (error) { ASSERT(XFS_FORCED_SHUTDOWN(mp)); goto error0; } diff --git a/fs/xfs/xfs_symlink.h b/fs/xfs/xfs_symlink.h index 3743948..99338ba 100644 --- a/fs/xfs/xfs_symlink.h +++ b/fs/xfs/xfs_symlink.h @@ -17,50 +17,11 @@ #ifndef __XFS_SYMLINK_H #define __XFS_SYMLINK_H 1 -struct xfs_mount; -struct xfs_trans; -struct xfs_inode; -struct xfs_buf; -struct xfs_ifork; -struct xfs_name; - -#define XFS_SYMLINK_MAGIC 0x58534c4d /* XSLM */ - -struct xfs_dsymlink_hdr { - __be32 sl_magic; - __be32 sl_offset; - __be32 sl_bytes; - __be32 sl_crc; - uuid_t sl_uuid; - __be64 sl_owner; - __be64 sl_blkno; - __be64 sl_lsn; -}; - -/* - * The maximum pathlen is 1024 bytes. Since the minimum file system - * blocksize is 512 bytes, we can get a max of 3 extents back from - * bmapi when crc headers are taken into account. - */ -#define XFS_SYMLINK_MAPS 3 - -#define XFS_SYMLINK_BUF_SPACE(mp, bufsize) \ - ((bufsize) - (xfs_sb_version_hascrc(&(mp)->m_sb) ? \ - sizeof(struct xfs_dsymlink_hdr) : 0)) - -int xfs_symlink_blocks(struct xfs_mount *mp, int pathlen); - -void xfs_symlink_local_to_remote(struct xfs_trans *tp, struct xfs_buf *bp, - struct xfs_inode *ip, struct xfs_ifork *ifp); - -extern const struct xfs_buf_ops xfs_symlink_buf_ops; - -#ifdef __KERNEL__ +/* Kernel only symlink defintions */ int xfs_symlink(struct xfs_inode *dp, struct xfs_name *link_name, const char *target_path, umode_t mode, struct xfs_inode **ipp); int xfs_readlink(struct xfs_inode *ip, char *link); int xfs_inactive_symlink(struct xfs_inode *ip, struct xfs_trans **tpp); -#endif /* __KERNEL__ */ #endif /* __XFS_SYMLINK_H */ diff --git a/fs/xfs/xfs_symlink_remote.c b/fs/xfs/xfs_symlink_remote.c new file mode 100644 index 0000000..01c85e3 --- /dev/null +++ b/fs/xfs/xfs_symlink_remote.c @@ -0,0 +1,200 @@ +/* + * Copyright (c) 2000-2006 Silicon Graphics, Inc. + * Copyright (c) 2012-2013 Red Hat, Inc. + * All rights reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include "xfs.h" +#include "xfs_fs.h" +#include "xfs_format.h" +#include "xfs_log.h" +#include "xfs_trans.h" +#include "xfs_ag.h" +#include "xfs_sb.h" +#include "xfs_mount.h" +#include "xfs_bmap_btree.h" +#include "xfs_inode.h" +#include "xfs_error.h" +#include "xfs_trace.h" +#include "xfs_symlink.h" +#include "xfs_cksum.h" +#include "xfs_buf_item.h" + + +/* + * Each contiguous block has a header, so it is not just a simple pathlen + * to FSB conversion. + */ +int +xfs_symlink_blocks( + struct xfs_mount *mp, + int pathlen) +{ + int buflen = XFS_SYMLINK_BUF_SPACE(mp, mp->m_sb.sb_blocksize); + + return (pathlen + buflen - 1) / buflen; +} + +int +xfs_symlink_hdr_set( + struct xfs_mount *mp, + xfs_ino_t ino, + uint32_t offset, + uint32_t size, + struct xfs_buf *bp) +{ + struct xfs_dsymlink_hdr *dsl = bp->b_addr; + + if (!xfs_sb_version_hascrc(&mp->m_sb)) + return 0; + + dsl->sl_magic = cpu_to_be32(XFS_SYMLINK_MAGIC); + dsl->sl_offset = cpu_to_be32(offset); + dsl->sl_bytes = cpu_to_be32(size); + uuid_copy(&dsl->sl_uuid, &mp->m_sb.sb_uuid); + dsl->sl_owner = cpu_to_be64(ino); + dsl->sl_blkno = cpu_to_be64(bp->b_bn); + bp->b_ops = &xfs_symlink_buf_ops; + + return sizeof(struct xfs_dsymlink_hdr); +} + +/* + * Checking of the symlink header is split into two parts. the verifier does + * CRC, location and bounds checking, the unpacking function checks the path + * parameters and owner. + */ +bool +xfs_symlink_hdr_ok( + struct xfs_mount *mp, + xfs_ino_t ino, + uint32_t offset, + uint32_t size, + struct xfs_buf *bp) +{ + struct xfs_dsymlink_hdr *dsl = bp->b_addr; + + if (offset != be32_to_cpu(dsl->sl_offset)) + return false; + if (size != be32_to_cpu(dsl->sl_bytes)) + return false; + if (ino != be64_to_cpu(dsl->sl_owner)) + return false; + + /* ok */ + return true; +} + +static bool +xfs_symlink_verify( + struct xfs_buf *bp) +{ + struct xfs_mount *mp = bp->b_target->bt_mount; + struct xfs_dsymlink_hdr *dsl = bp->b_addr; + + if (!xfs_sb_version_hascrc(&mp->m_sb)) + return false; + if (dsl->sl_magic != cpu_to_be32(XFS_SYMLINK_MAGIC)) + return false; + if (!uuid_equal(&dsl->sl_uuid, &mp->m_sb.sb_uuid)) + return false; + if (bp->b_bn != be64_to_cpu(dsl->sl_blkno)) + return false; + if (be32_to_cpu(dsl->sl_offset) + + be32_to_cpu(dsl->sl_bytes) >= MAXPATHLEN) + return false; + if (dsl->sl_owner == 0) + return false; + + return true; +} + +static void +xfs_symlink_read_verify( + struct xfs_buf *bp) +{ + struct xfs_mount *mp = bp->b_target->bt_mount; + + /* no verification of non-crc buffers */ + if (!xfs_sb_version_hascrc(&mp->m_sb)) + return; + + if (!xfs_verify_cksum(bp->b_addr, BBTOB(bp->b_length), + offsetof(struct xfs_dsymlink_hdr, sl_crc)) || + !xfs_symlink_verify(bp)) { + XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr); + xfs_buf_ioerror(bp, EFSCORRUPTED); + } +} + +static void +xfs_symlink_write_verify( + struct xfs_buf *bp) +{ + struct xfs_mount *mp = bp->b_target->bt_mount; + struct xfs_buf_log_item *bip = bp->b_fspriv; + + /* no verification of non-crc buffers */ + if (!xfs_sb_version_hascrc(&mp->m_sb)) + return; + + if (!xfs_symlink_verify(bp)) { + XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr); + xfs_buf_ioerror(bp, EFSCORRUPTED); + return; + } + + if (bip) { + struct xfs_dsymlink_hdr *dsl = bp->b_addr; + dsl->sl_lsn = cpu_to_be64(bip->bli_item.li_lsn); + } + xfs_update_cksum(bp->b_addr, BBTOB(bp->b_length), + offsetof(struct xfs_dsymlink_hdr, sl_crc)); +} + +const struct xfs_buf_ops xfs_symlink_buf_ops = { + .verify_read = xfs_symlink_read_verify, + .verify_write = xfs_symlink_write_verify, +}; + +void +xfs_symlink_local_to_remote( + struct xfs_trans *tp, + struct xfs_buf *bp, + struct xfs_inode *ip, + struct xfs_ifork *ifp) +{ + struct xfs_mount *mp = ip->i_mount; + char *buf; + + if (!xfs_sb_version_hascrc(&mp->m_sb)) { + bp->b_ops = NULL; + memcpy(bp->b_addr, ifp->if_u1.if_data, ifp->if_bytes); + return; + } + + /* + * As this symlink fits in an inode literal area, it must also fit in + * the smallest buffer the filesystem supports. + */ + ASSERT(BBTOB(bp->b_length) >= + ifp->if_bytes + sizeof(struct xfs_dsymlink_hdr)); + + bp->b_ops = &xfs_symlink_buf_ops; + + buf = bp->b_addr; + buf += xfs_symlink_hdr_set(mp, ip->i_ino, 0, ifp->if_bytes, bp); + memcpy(buf, ifp->if_u1.if_data, ifp->if_bytes); +} diff --git a/fs/xfs/xfs_trace.c b/fs/xfs/xfs_trace.c index b6e3897..5d7b3e4 100644 --- a/fs/xfs/xfs_trace.c +++ b/fs/xfs/xfs_trace.c @@ -18,6 +18,7 @@ #include "xfs.h" #include "xfs_fs.h" #include "xfs_types.h" +#include "xfs_format.h" #include "xfs_log.h" #include "xfs_trans.h" #include "xfs_sb.h" diff --git a/fs/xfs/xfs_trans.c b/fs/xfs/xfs_trans.c index 35a2299..5411e01 100644 --- a/fs/xfs/xfs_trans.c +++ b/fs/xfs/xfs_trans.c @@ -18,7 +18,7 @@ */ #include "xfs.h" #include "xfs_fs.h" -#include "xfs_types.h" +#include "xfs_format.h" #include "xfs_log.h" #include "xfs_trans.h" #include "xfs_sb.h" @@ -49,629 +49,6 @@ kmem_zone_t *xfs_trans_zone; kmem_zone_t *xfs_log_item_desc_zone; /* - * A buffer has a format structure overhead in the log in addition - * to the data, so we need to take this into account when reserving - * space in a transaction for a buffer. Round the space required up - * to a multiple of 128 bytes so that we don't change the historical - * reservation that has been used for this overhead. - */ -STATIC uint -xfs_buf_log_overhead(void) -{ - return round_up(sizeof(struct xlog_op_header) + - sizeof(struct xfs_buf_log_format), 128); -} - -/* - * Calculate out transaction log reservation per item in bytes. - * - * The nbufs argument is used to indicate the number of items that - * will be changed in a transaction. size is used to tell how many - * bytes should be reserved per item. - */ -STATIC uint -xfs_calc_buf_res( - uint nbufs, - uint size) -{ - return nbufs * (size + xfs_buf_log_overhead()); -} - -/* - * Various log reservation values. - * - * These are based on the size of the file system block because that is what - * most transactions manipulate. Each adds in an additional 128 bytes per - * item logged to try to account for the overhead of the transaction mechanism. - * - * Note: Most of the reservations underestimate the number of allocation - * groups into which they could free extents in the xfs_bmap_finish() call. - * This is because the number in the worst case is quite high and quite - * unusual. In order to fix this we need to change xfs_bmap_finish() to free - * extents in only a single AG at a time. This will require changes to the - * EFI code as well, however, so that the EFI for the extents not freed is - * logged again in each transaction. See SGI PV #261917. - * - * Reservation functions here avoid a huge stack in xfs_trans_init due to - * register overflow from temporaries in the calculations. - */ - - -/* - * In a write transaction we can allocate a maximum of 2 - * extents. This gives: - * the inode getting the new extents: inode size - * the inode's bmap btree: max depth * block size - * the agfs of the ags from which the extents are allocated: 2 * sector - * the superblock free block counter: sector size - * the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size - * And the bmap_finish transaction can free bmap blocks in a join: - * the agfs of the ags containing the blocks: 2 * sector size - * the agfls of the ags containing the blocks: 2 * sector size - * the super block free block counter: sector size - * the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size - */ -STATIC uint -xfs_calc_write_reservation( - struct xfs_mount *mp) -{ - return XFS_DQUOT_LOGRES(mp) + - MAX((xfs_calc_buf_res(1, mp->m_sb.sb_inodesize) + - xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK), - XFS_FSB_TO_B(mp, 1)) + - xfs_calc_buf_res(3, mp->m_sb.sb_sectsize) + - xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 2), - XFS_FSB_TO_B(mp, 1))), - (xfs_calc_buf_res(5, mp->m_sb.sb_sectsize) + - xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 2), - XFS_FSB_TO_B(mp, 1)))); -} - -/* - * In truncating a file we free up to two extents at once. We can modify: - * the inode being truncated: inode size - * the inode's bmap btree: (max depth + 1) * block size - * And the bmap_finish transaction can free the blocks and bmap blocks: - * the agf for each of the ags: 4 * sector size - * the agfl for each of the ags: 4 * sector size - * the super block to reflect the freed blocks: sector size - * worst case split in allocation btrees per extent assuming 4 extents: - * 4 exts * 2 trees * (2 * max depth - 1) * block size - * the inode btree: max depth * blocksize - * the allocation btrees: 2 trees * (max depth - 1) * block size - */ -STATIC uint -xfs_calc_itruncate_reservation( - struct xfs_mount *mp) -{ - return XFS_DQUOT_LOGRES(mp) + - MAX((xfs_calc_buf_res(1, mp->m_sb.sb_inodesize) + - xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) + 1, - XFS_FSB_TO_B(mp, 1))), - (xfs_calc_buf_res(9, mp->m_sb.sb_sectsize) + - xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 4), - XFS_FSB_TO_B(mp, 1)) + - xfs_calc_buf_res(5, 0) + - xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), - XFS_FSB_TO_B(mp, 1)) + - xfs_calc_buf_res(2 + XFS_IALLOC_BLOCKS(mp) + - mp->m_in_maxlevels, 0))); -} - -/* - * In renaming a files we can modify: - * the four inodes involved: 4 * inode size - * the two directory btrees: 2 * (max depth + v2) * dir block size - * the two directory bmap btrees: 2 * max depth * block size - * And the bmap_finish transaction can free dir and bmap blocks (two sets - * of bmap blocks) giving: - * the agf for the ags in which the blocks live: 3 * sector size - * the agfl for the ags in which the blocks live: 3 * sector size - * the superblock for the free block count: sector size - * the allocation btrees: 3 exts * 2 trees * (2 * max depth - 1) * block size - */ -STATIC uint -xfs_calc_rename_reservation( - struct xfs_mount *mp) -{ - return XFS_DQUOT_LOGRES(mp) + - MAX((xfs_calc_buf_res(4, mp->m_sb.sb_inodesize) + - xfs_calc_buf_res(2 * XFS_DIROP_LOG_COUNT(mp), - XFS_FSB_TO_B(mp, 1))), - (xfs_calc_buf_res(7, mp->m_sb.sb_sectsize) + - xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 3), - XFS_FSB_TO_B(mp, 1)))); -} - -/* - * For creating a link to an inode: - * the parent directory inode: inode size - * the linked inode: inode size - * the directory btree could split: (max depth + v2) * dir block size - * the directory bmap btree could join or split: (max depth + v2) * blocksize - * And the bmap_finish transaction can free some bmap blocks giving: - * the agf for the ag in which the blocks live: sector size - * the agfl for the ag in which the blocks live: sector size - * the superblock for the free block count: sector size - * the allocation btrees: 2 trees * (2 * max depth - 1) * block size - */ -STATIC uint -xfs_calc_link_reservation( - struct xfs_mount *mp) -{ - return XFS_DQUOT_LOGRES(mp) + - MAX((xfs_calc_buf_res(2, mp->m_sb.sb_inodesize) + - xfs_calc_buf_res(XFS_DIROP_LOG_COUNT(mp), - XFS_FSB_TO_B(mp, 1))), - (xfs_calc_buf_res(3, mp->m_sb.sb_sectsize) + - xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), - XFS_FSB_TO_B(mp, 1)))); -} - -/* - * For removing a directory entry we can modify: - * the parent directory inode: inode size - * the removed inode: inode size - * the directory btree could join: (max depth + v2) * dir block size - * the directory bmap btree could join or split: (max depth + v2) * blocksize - * And the bmap_finish transaction can free the dir and bmap blocks giving: - * the agf for the ag in which the blocks live: 2 * sector size - * the agfl for the ag in which the blocks live: 2 * sector size - * the superblock for the free block count: sector size - * the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size - */ -STATIC uint -xfs_calc_remove_reservation( - struct xfs_mount *mp) -{ - return XFS_DQUOT_LOGRES(mp) + - MAX((xfs_calc_buf_res(2, mp->m_sb.sb_inodesize) + - xfs_calc_buf_res(XFS_DIROP_LOG_COUNT(mp), - XFS_FSB_TO_B(mp, 1))), - (xfs_calc_buf_res(5, mp->m_sb.sb_sectsize) + - xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 2), - XFS_FSB_TO_B(mp, 1)))); -} - -/* - * For create, break it in to the two cases that the transaction - * covers. We start with the modify case - allocation done by modification - * of the state of existing inodes - and the allocation case. - */ - -/* - * For create we can modify: - * the parent directory inode: inode size - * the new inode: inode size - * the inode btree entry: block size - * the superblock for the nlink flag: sector size - * the directory btree: (max depth + v2) * dir block size - * the directory inode's bmap btree: (max depth + v2) * block size - */ -STATIC uint -xfs_calc_create_resv_modify( - struct xfs_mount *mp) -{ - return xfs_calc_buf_res(2, mp->m_sb.sb_inodesize) + - xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) + - (uint)XFS_FSB_TO_B(mp, 1) + - xfs_calc_buf_res(XFS_DIROP_LOG_COUNT(mp), XFS_FSB_TO_B(mp, 1)); -} - -/* - * For create we can allocate some inodes giving: - * the agi and agf of the ag getting the new inodes: 2 * sectorsize - * the superblock for the nlink flag: sector size - * the inode blocks allocated: XFS_IALLOC_BLOCKS * blocksize - * the inode btree: max depth * blocksize - * the allocation btrees: 2 trees * (max depth - 1) * block size - */ -STATIC uint -xfs_calc_create_resv_alloc( - struct xfs_mount *mp) -{ - return xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) + - mp->m_sb.sb_sectsize + - xfs_calc_buf_res(XFS_IALLOC_BLOCKS(mp), XFS_FSB_TO_B(mp, 1)) + - xfs_calc_buf_res(mp->m_in_maxlevels, XFS_FSB_TO_B(mp, 1)) + - xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), - XFS_FSB_TO_B(mp, 1)); -} - -STATIC uint -__xfs_calc_create_reservation( - struct xfs_mount *mp) -{ - return XFS_DQUOT_LOGRES(mp) + - MAX(xfs_calc_create_resv_alloc(mp), - xfs_calc_create_resv_modify(mp)); -} - -/* - * For icreate we can allocate some inodes giving: - * the agi and agf of the ag getting the new inodes: 2 * sectorsize - * the superblock for the nlink flag: sector size - * the inode btree: max depth * blocksize - * the allocation btrees: 2 trees * (max depth - 1) * block size - */ -STATIC uint -xfs_calc_icreate_resv_alloc( - struct xfs_mount *mp) -{ - return xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) + - mp->m_sb.sb_sectsize + - xfs_calc_buf_res(mp->m_in_maxlevels, XFS_FSB_TO_B(mp, 1)) + - xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), - XFS_FSB_TO_B(mp, 1)); -} - -STATIC uint -xfs_calc_icreate_reservation(xfs_mount_t *mp) -{ - return XFS_DQUOT_LOGRES(mp) + - MAX(xfs_calc_icreate_resv_alloc(mp), - xfs_calc_create_resv_modify(mp)); -} - -STATIC uint -xfs_calc_create_reservation( - struct xfs_mount *mp) -{ - if (xfs_sb_version_hascrc(&mp->m_sb)) - return xfs_calc_icreate_reservation(mp); - return __xfs_calc_create_reservation(mp); - -} - -/* - * Making a new directory is the same as creating a new file. - */ -STATIC uint -xfs_calc_mkdir_reservation( - struct xfs_mount *mp) -{ - return xfs_calc_create_reservation(mp); -} - - -/* - * Making a new symplink is the same as creating a new file, but - * with the added blocks for remote symlink data which can be up to 1kB in - * length (MAXPATHLEN). - */ -STATIC uint -xfs_calc_symlink_reservation( - struct xfs_mount *mp) -{ - return xfs_calc_create_reservation(mp) + - xfs_calc_buf_res(1, MAXPATHLEN); -} - -/* - * In freeing an inode we can modify: - * the inode being freed: inode size - * the super block free inode counter: sector size - * the agi hash list and counters: sector size - * the inode btree entry: block size - * the on disk inode before ours in the agi hash list: inode cluster size - * the inode btree: max depth * blocksize - * the allocation btrees: 2 trees * (max depth - 1) * block size - */ -STATIC uint -xfs_calc_ifree_reservation( - struct xfs_mount *mp) -{ - return XFS_DQUOT_LOGRES(mp) + - xfs_calc_buf_res(1, mp->m_sb.sb_inodesize) + - xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) + - xfs_calc_buf_res(1, XFS_FSB_TO_B(mp, 1)) + - MAX((__uint16_t)XFS_FSB_TO_B(mp, 1), - XFS_INODE_CLUSTER_SIZE(mp)) + - xfs_calc_buf_res(1, 0) + - xfs_calc_buf_res(2 + XFS_IALLOC_BLOCKS(mp) + - mp->m_in_maxlevels, 0) + - xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), - XFS_FSB_TO_B(mp, 1)); -} - -/* - * When only changing the inode we log the inode and possibly the superblock - * We also add a bit of slop for the transaction stuff. - */ -STATIC uint -xfs_calc_ichange_reservation( - struct xfs_mount *mp) -{ - return XFS_DQUOT_LOGRES(mp) + - mp->m_sb.sb_inodesize + - mp->m_sb.sb_sectsize + - 512; - -} - -/* - * Growing the data section of the filesystem. - * superblock - * agi and agf - * allocation btrees - */ -STATIC uint -xfs_calc_growdata_reservation( - struct xfs_mount *mp) -{ - return xfs_calc_buf_res(3, mp->m_sb.sb_sectsize) + - xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), - XFS_FSB_TO_B(mp, 1)); -} - -/* - * Growing the rt section of the filesystem. - * In the first set of transactions (ALLOC) we allocate space to the - * bitmap or summary files. - * superblock: sector size - * agf of the ag from which the extent is allocated: sector size - * bmap btree for bitmap/summary inode: max depth * blocksize - * bitmap/summary inode: inode size - * allocation btrees for 1 block alloc: 2 * (2 * maxdepth - 1) * blocksize - */ -STATIC uint -xfs_calc_growrtalloc_reservation( - struct xfs_mount *mp) -{ - return xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) + - xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK), - XFS_FSB_TO_B(mp, 1)) + - xfs_calc_buf_res(1, mp->m_sb.sb_inodesize) + - xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), - XFS_FSB_TO_B(mp, 1)); -} - -/* - * Growing the rt section of the filesystem. - * In the second set of transactions (ZERO) we zero the new metadata blocks. - * one bitmap/summary block: blocksize - */ -STATIC uint -xfs_calc_growrtzero_reservation( - struct xfs_mount *mp) -{ - return xfs_calc_buf_res(1, mp->m_sb.sb_blocksize); -} - -/* - * Growing the rt section of the filesystem. - * In the third set of transactions (FREE) we update metadata without - * allocating any new blocks. - * superblock: sector size - * bitmap inode: inode size - * summary inode: inode size - * one bitmap block: blocksize - * summary blocks: new summary size - */ -STATIC uint -xfs_calc_growrtfree_reservation( - struct xfs_mount *mp) -{ - return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) + - xfs_calc_buf_res(2, mp->m_sb.sb_inodesize) + - xfs_calc_buf_res(1, mp->m_sb.sb_blocksize) + - xfs_calc_buf_res(1, mp->m_rsumsize); -} - -/* - * Logging the inode modification timestamp on a synchronous write. - * inode - */ -STATIC uint -xfs_calc_swrite_reservation( - struct xfs_mount *mp) -{ - return xfs_calc_buf_res(1, mp->m_sb.sb_inodesize); -} - -/* - * Logging the inode mode bits when writing a setuid/setgid file - * inode - */ -STATIC uint -xfs_calc_writeid_reservation(xfs_mount_t *mp) -{ - return xfs_calc_buf_res(1, mp->m_sb.sb_inodesize); -} - -/* - * Converting the inode from non-attributed to attributed. - * the inode being converted: inode size - * agf block and superblock (for block allocation) - * the new block (directory sized) - * bmap blocks for the new directory block - * allocation btrees - */ -STATIC uint -xfs_calc_addafork_reservation( - struct xfs_mount *mp) -{ - return XFS_DQUOT_LOGRES(mp) + - xfs_calc_buf_res(1, mp->m_sb.sb_inodesize) + - xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) + - xfs_calc_buf_res(1, mp->m_dirblksize) + - xfs_calc_buf_res(XFS_DAENTER_BMAP1B(mp, XFS_DATA_FORK) + 1, - XFS_FSB_TO_B(mp, 1)) + - xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), - XFS_FSB_TO_B(mp, 1)); -} - -/* - * Removing the attribute fork of a file - * the inode being truncated: inode size - * the inode's bmap btree: max depth * block size - * And the bmap_finish transaction can free the blocks and bmap blocks: - * the agf for each of the ags: 4 * sector size - * the agfl for each of the ags: 4 * sector size - * the super block to reflect the freed blocks: sector size - * worst case split in allocation btrees per extent assuming 4 extents: - * 4 exts * 2 trees * (2 * max depth - 1) * block size - */ -STATIC uint -xfs_calc_attrinval_reservation( - struct xfs_mount *mp) -{ - return MAX((xfs_calc_buf_res(1, mp->m_sb.sb_inodesize) + - xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK), - XFS_FSB_TO_B(mp, 1))), - (xfs_calc_buf_res(9, mp->m_sb.sb_sectsize) + - xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 4), - XFS_FSB_TO_B(mp, 1)))); -} - -/* - * Setting an attribute at mount time. - * the inode getting the attribute - * the superblock for allocations - * the agfs extents are allocated from - * the attribute btree * max depth - * the inode allocation btree - * Since attribute transaction space is dependent on the size of the attribute, - * the calculation is done partially at mount time and partially at runtime(see - * below). - */ -STATIC uint -xfs_calc_attrsetm_reservation( - struct xfs_mount *mp) -{ - return XFS_DQUOT_LOGRES(mp) + - xfs_calc_buf_res(1, mp->m_sb.sb_inodesize) + - xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) + - xfs_calc_buf_res(XFS_DA_NODE_MAXDEPTH, XFS_FSB_TO_B(mp, 1)); -} - -/* - * Setting an attribute at runtime, transaction space unit per block. - * the superblock for allocations: sector size - * the inode bmap btree could join or split: max depth * block size - * Since the runtime attribute transaction space is dependent on the total - * blocks needed for the 1st bmap, here we calculate out the space unit for - * one block so that the caller could figure out the total space according - * to the attibute extent length in blocks by: ext * XFS_ATTRSETRT_LOG_RES(mp). - */ -STATIC uint -xfs_calc_attrsetrt_reservation( - struct xfs_mount *mp) -{ - return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) + - xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK), - XFS_FSB_TO_B(mp, 1)); -} - -/* - * Removing an attribute. - * the inode: inode size - * the attribute btree could join: max depth * block size - * the inode bmap btree could join or split: max depth * block size - * And the bmap_finish transaction can free the attr blocks freed giving: - * the agf for the ag in which the blocks live: 2 * sector size - * the agfl for the ag in which the blocks live: 2 * sector size - * the superblock for the free block count: sector size - * the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size - */ -STATIC uint -xfs_calc_attrrm_reservation( - struct xfs_mount *mp) -{ - return XFS_DQUOT_LOGRES(mp) + - MAX((xfs_calc_buf_res(1, mp->m_sb.sb_inodesize) + - xfs_calc_buf_res(XFS_DA_NODE_MAXDEPTH, - XFS_FSB_TO_B(mp, 1)) + - (uint)XFS_FSB_TO_B(mp, - XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)) + - xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK), 0)), - (xfs_calc_buf_res(5, mp->m_sb.sb_sectsize) + - xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 2), - XFS_FSB_TO_B(mp, 1)))); -} - -/* - * Clearing a bad agino number in an agi hash bucket. - */ -STATIC uint -xfs_calc_clear_agi_bucket_reservation( - struct xfs_mount *mp) -{ - return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize); -} - -/* - * Clearing the quotaflags in the superblock. - * the super block for changing quota flags: sector size - */ -STATIC uint -xfs_calc_qm_sbchange_reservation( - struct xfs_mount *mp) -{ - return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize); -} - -/* - * Adjusting quota limits. - * the xfs_disk_dquot_t: sizeof(struct xfs_disk_dquot) - */ -STATIC uint -xfs_calc_qm_setqlim_reservation( - struct xfs_mount *mp) -{ - return xfs_calc_buf_res(1, sizeof(struct xfs_disk_dquot)); -} - -/* - * Allocating quota on disk if needed. - * the write transaction log space: XFS_WRITE_LOG_RES(mp) - * the unit of quota allocation: one system block size - */ -STATIC uint -xfs_calc_qm_dqalloc_reservation( - struct xfs_mount *mp) -{ - return XFS_WRITE_LOG_RES(mp) + - xfs_calc_buf_res(1, - XFS_FSB_TO_B(mp, XFS_DQUOT_CLUSTER_SIZE_FSB) - 1); -} - -/* - * Turning off quotas. - * the xfs_qoff_logitem_t: sizeof(struct xfs_qoff_logitem) * 2 - * the superblock for the quota flags: sector size - */ -STATIC uint -xfs_calc_qm_quotaoff_reservation( - struct xfs_mount *mp) -{ - return sizeof(struct xfs_qoff_logitem) * 2 + - xfs_calc_buf_res(1, mp->m_sb.sb_sectsize); -} - -/* - * End of turning off quotas. - * the xfs_qoff_logitem_t: sizeof(struct xfs_qoff_logitem) * 2 - */ -STATIC uint -xfs_calc_qm_quotaoff_end_reservation( - struct xfs_mount *mp) -{ - return sizeof(struct xfs_qoff_logitem) * 2; -} - -/* - * Syncing the incore super block changes to disk. - * the super block to reflect the changes: sector size - */ -STATIC uint -xfs_calc_sb_reservation( - struct xfs_mount *mp) -{ - return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize); -} - -/* * Initialize the precomputed transaction reservation values * in the mount structure. */ @@ -679,36 +56,7 @@ void xfs_trans_init( struct xfs_mount *mp) { - struct xfs_trans_reservations *resp = &mp->m_reservations; - - resp->tr_write = xfs_calc_write_reservation(mp); - resp->tr_itruncate = xfs_calc_itruncate_reservation(mp); - resp->tr_rename = xfs_calc_rename_reservation(mp); - resp->tr_link = xfs_calc_link_reservation(mp); - resp->tr_remove = xfs_calc_remove_reservation(mp); - resp->tr_symlink = xfs_calc_symlink_reservation(mp); - resp->tr_create = xfs_calc_create_reservation(mp); - resp->tr_mkdir = xfs_calc_mkdir_reservation(mp); - resp->tr_ifree = xfs_calc_ifree_reservation(mp); - resp->tr_ichange = xfs_calc_ichange_reservation(mp); - resp->tr_growdata = xfs_calc_growdata_reservation(mp); - resp->tr_swrite = xfs_calc_swrite_reservation(mp); - resp->tr_writeid = xfs_calc_writeid_reservation(mp); - resp->tr_addafork = xfs_calc_addafork_reservation(mp); - resp->tr_attrinval = xfs_calc_attrinval_reservation(mp); - resp->tr_attrsetm = xfs_calc_attrsetm_reservation(mp); - resp->tr_attrsetrt = xfs_calc_attrsetrt_reservation(mp); - resp->tr_attrrm = xfs_calc_attrrm_reservation(mp); - resp->tr_clearagi = xfs_calc_clear_agi_bucket_reservation(mp); - resp->tr_growrtalloc = xfs_calc_growrtalloc_reservation(mp); - resp->tr_growrtzero = xfs_calc_growrtzero_reservation(mp); - resp->tr_growrtfree = xfs_calc_growrtfree_reservation(mp); - resp->tr_qm_sbchange = xfs_calc_qm_sbchange_reservation(mp); - resp->tr_qm_setqlim = xfs_calc_qm_setqlim_reservation(mp); - resp->tr_qm_dqalloc = xfs_calc_qm_dqalloc_reservation(mp); - resp->tr_qm_quotaoff = xfs_calc_qm_quotaoff_reservation(mp); - resp->tr_qm_equotaoff = xfs_calc_qm_quotaoff_end_reservation(mp); - resp->tr_sb = xfs_calc_sb_reservation(mp); + xfs_trans_resv_calc(mp, M_RES(mp)); } /* @@ -744,7 +92,7 @@ _xfs_trans_alloc( atomic_inc(&mp->m_active_trans); tp = kmem_zone_zalloc(xfs_trans_zone, memflags); - tp->t_magic = XFS_TRANS_MAGIC; + tp->t_magic = XFS_TRANS_HEADER_MAGIC; tp->t_type = type; tp->t_mountp = mp; INIT_LIST_HEAD(&tp->t_items); @@ -789,7 +137,7 @@ xfs_trans_dup( /* * Initialize the new transaction structure. */ - ntp->t_magic = XFS_TRANS_MAGIC; + ntp->t_magic = XFS_TRANS_HEADER_MAGIC; ntp->t_type = tp->t_type; ntp->t_mountp = tp->t_mountp; INIT_LIST_HEAD(&ntp->t_items); @@ -832,12 +180,10 @@ xfs_trans_dup( */ int xfs_trans_reserve( - xfs_trans_t *tp, - uint blocks, - uint logspace, - uint rtextents, - uint flags, - uint logcount) + struct xfs_trans *tp, + struct xfs_trans_res *resp, + uint blocks, + uint rtextents) { int error = 0; int rsvd = (tp->t_flags & XFS_TRANS_RESERVE) != 0; @@ -863,13 +209,15 @@ xfs_trans_reserve( /* * Reserve the log space needed for this transaction. */ - if (logspace > 0) { + if (resp->tr_logres > 0) { bool permanent = false; - ASSERT(tp->t_log_res == 0 || tp->t_log_res == logspace); - ASSERT(tp->t_log_count == 0 || tp->t_log_count == logcount); + ASSERT(tp->t_log_res == 0 || + tp->t_log_res == resp->tr_logres); + ASSERT(tp->t_log_count == 0 || + tp->t_log_count == resp->tr_logcount); - if (flags & XFS_TRANS_PERM_LOG_RES) { + if (resp->tr_logflags & XFS_TRANS_PERM_LOG_RES) { tp->t_flags |= XFS_TRANS_PERM_LOG_RES; permanent = true; } else { @@ -878,20 +226,21 @@ xfs_trans_reserve( } if (tp->t_ticket != NULL) { - ASSERT(flags & XFS_TRANS_PERM_LOG_RES); + ASSERT(resp->tr_logflags & XFS_TRANS_PERM_LOG_RES); error = xfs_log_regrant(tp->t_mountp, tp->t_ticket); } else { - error = xfs_log_reserve(tp->t_mountp, logspace, - logcount, &tp->t_ticket, - XFS_TRANSACTION, permanent, - tp->t_type); + error = xfs_log_reserve(tp->t_mountp, + resp->tr_logres, + resp->tr_logcount, + &tp->t_ticket, XFS_TRANSACTION, + permanent, tp->t_type); } if (error) goto undo_blocks; - tp->t_log_res = logspace; - tp->t_log_count = logcount; + tp->t_log_res = resp->tr_logres; + tp->t_log_count = resp->tr_logcount; } /* @@ -916,10 +265,10 @@ xfs_trans_reserve( * reservations which have already been performed. */ undo_log: - if (logspace > 0) { + if (resp->tr_logres > 0) { int log_flags; - if (flags & XFS_TRANS_PERM_LOG_RES) { + if (resp->tr_logflags & XFS_TRANS_PERM_LOG_RES) { log_flags = XFS_LOG_REL_PERM_RESERV; } else { log_flags = 0; @@ -1367,10 +716,10 @@ xfs_trans_free_items( lip->li_desc = NULL; if (commit_lsn != NULLCOMMITLSN) - IOP_COMMITTING(lip, commit_lsn); + lip->li_ops->iop_committing(lip, commit_lsn); if (flags & XFS_TRANS_ABORT) lip->li_flags |= XFS_LI_ABORTED; - IOP_UNLOCK(lip); + lip->li_ops->iop_unlock(lip); xfs_trans_free_item_desc(lidp); } @@ -1390,8 +739,11 @@ xfs_log_item_batch_insert( /* xfs_trans_ail_update_bulk drops ailp->xa_lock */ xfs_trans_ail_update_bulk(ailp, cur, log_items, nr_items, commit_lsn); - for (i = 0; i < nr_items; i++) - IOP_UNPIN(log_items[i], 0); + for (i = 0; i < nr_items; i++) { + struct xfs_log_item *lip = log_items[i]; + + lip->li_ops->iop_unpin(lip, 0); + } } /* @@ -1401,11 +753,11 @@ xfs_log_item_batch_insert( * * If we are called with the aborted flag set, it is because a log write during * a CIL checkpoint commit has failed. In this case, all the items in the - * checkpoint have already gone through IOP_COMMITED and IOP_UNLOCK, which + * checkpoint have already gone through iop_commited and iop_unlock, which * means that checkpoint commit abort handling is treated exactly the same * as an iclog write error even though we haven't started any IO yet. Hence in - * this case all we need to do is IOP_COMMITTED processing, followed by an - * IOP_UNPIN(aborted) call. + * this case all we need to do is iop_committed processing, followed by an + * iop_unpin(aborted) call. * * The AIL cursor is used to optimise the insert process. If commit_lsn is not * at the end of the AIL, the insert cursor avoids the need to walk @@ -1438,7 +790,7 @@ xfs_trans_committed_bulk( if (aborted) lip->li_flags |= XFS_LI_ABORTED; - item_lsn = IOP_COMMITTED(lip, commit_lsn); + item_lsn = lip->li_ops->iop_committed(lip, commit_lsn); /* item_lsn of -1 means the item needs no further processing */ if (XFS_LSN_CMP(item_lsn, (xfs_lsn_t)-1) == 0) @@ -1450,7 +802,7 @@ xfs_trans_committed_bulk( */ if (aborted) { ASSERT(XFS_FORCED_SHUTDOWN(ailp->xa_mount)); - IOP_UNPIN(lip, 1); + lip->li_ops->iop_unpin(lip, 1); continue; } @@ -1468,7 +820,7 @@ xfs_trans_committed_bulk( xfs_trans_ail_update(ailp, lip, item_lsn); else spin_unlock(&ailp->xa_lock); - IOP_UNPIN(lip, 0); + lip->li_ops->iop_unpin(lip, 0); continue; } @@ -1666,7 +1018,7 @@ xfs_trans_roll( struct xfs_inode *dp) { struct xfs_trans *trans; - unsigned int logres, count; + struct xfs_trans_res tres; int error; /* @@ -1678,8 +1030,8 @@ xfs_trans_roll( /* * Copy the critical parameters from one trans to the next. */ - logres = trans->t_log_res; - count = trans->t_log_count; + tres.tr_logres = trans->t_log_res; + tres.tr_logcount = trans->t_log_count; *tpp = xfs_trans_dup(trans); /* @@ -1710,8 +1062,8 @@ xfs_trans_roll( * across this call, or that anything that is locked be logged in * the prior and the next transactions. */ - error = xfs_trans_reserve(trans, 0, logres, 0, - XFS_TRANS_PERM_LOG_RES, count); + tres.tr_logflags = XFS_TRANS_PERM_LOG_RES; + error = xfs_trans_reserve(trans, &tres, 0, 0); /* * Ensure that the inode is in the new transaction and locked. */ diff --git a/fs/xfs/xfs_trans.h b/fs/xfs/xfs_trans.h index 2b49463..09cf40b 100644 --- a/fs/xfs/xfs_trans.h +++ b/fs/xfs/xfs_trans.h @@ -20,285 +20,9 @@ struct xfs_log_item; -/* - * This is the structure written in the log at the head of - * every transaction. It identifies the type and id of the - * transaction, and contains the number of items logged by - * the transaction so we know how many to expect during recovery. - * - * Do not change the below structure without redoing the code in - * xlog_recover_add_to_trans() and xlog_recover_add_to_cont_trans(). - */ -typedef struct xfs_trans_header { - uint th_magic; /* magic number */ - uint th_type; /* transaction type */ - __int32_t th_tid; /* transaction id (unused) */ - uint th_num_items; /* num items logged by trans */ -} xfs_trans_header_t; - -#define XFS_TRANS_HEADER_MAGIC 0x5452414e /* TRAN */ - -/* - * Log item types. - */ -#define XFS_LI_EFI 0x1236 -#define XFS_LI_EFD 0x1237 -#define XFS_LI_IUNLINK 0x1238 -#define XFS_LI_INODE 0x123b /* aligned ino chunks, var-size ibufs */ -#define XFS_LI_BUF 0x123c /* v2 bufs, variable sized inode bufs */ -#define XFS_LI_DQUOT 0x123d -#define XFS_LI_QUOTAOFF 0x123e -#define XFS_LI_ICREATE 0x123f - -#define XFS_LI_TYPE_DESC \ - { XFS_LI_EFI, "XFS_LI_EFI" }, \ - { XFS_LI_EFD, "XFS_LI_EFD" }, \ - { XFS_LI_IUNLINK, "XFS_LI_IUNLINK" }, \ - { XFS_LI_INODE, "XFS_LI_INODE" }, \ - { XFS_LI_BUF, "XFS_LI_BUF" }, \ - { XFS_LI_DQUOT, "XFS_LI_DQUOT" }, \ - { XFS_LI_QUOTAOFF, "XFS_LI_QUOTAOFF" } - -/* - * Transaction types. Used to distinguish types of buffers. - */ -#define XFS_TRANS_SETATTR_NOT_SIZE 1 -#define XFS_TRANS_SETATTR_SIZE 2 -#define XFS_TRANS_INACTIVE 3 -#define XFS_TRANS_CREATE 4 -#define XFS_TRANS_CREATE_TRUNC 5 -#define XFS_TRANS_TRUNCATE_FILE 6 -#define XFS_TRANS_REMOVE 7 -#define XFS_TRANS_LINK 8 -#define XFS_TRANS_RENAME 9 -#define XFS_TRANS_MKDIR 10 -#define XFS_TRANS_RMDIR 11 -#define XFS_TRANS_SYMLINK 12 -#define XFS_TRANS_SET_DMATTRS 13 -#define XFS_TRANS_GROWFS 14 -#define XFS_TRANS_STRAT_WRITE 15 -#define XFS_TRANS_DIOSTRAT 16 -/* 17 was XFS_TRANS_WRITE_SYNC */ -#define XFS_TRANS_WRITEID 18 -#define XFS_TRANS_ADDAFORK 19 -#define XFS_TRANS_ATTRINVAL 20 -#define XFS_TRANS_ATRUNCATE 21 -#define XFS_TRANS_ATTR_SET 22 -#define XFS_TRANS_ATTR_RM 23 -#define XFS_TRANS_ATTR_FLAG 24 -#define XFS_TRANS_CLEAR_AGI_BUCKET 25 -#define XFS_TRANS_QM_SBCHANGE 26 -/* - * Dummy entries since we use the transaction type to index into the - * trans_type[] in xlog_recover_print_trans_head() - */ -#define XFS_TRANS_DUMMY1 27 -#define XFS_TRANS_DUMMY2 28 -#define XFS_TRANS_QM_QUOTAOFF 29 -#define XFS_TRANS_QM_DQALLOC 30 -#define XFS_TRANS_QM_SETQLIM 31 -#define XFS_TRANS_QM_DQCLUSTER 32 -#define XFS_TRANS_QM_QINOCREATE 33 -#define XFS_TRANS_QM_QUOTAOFF_END 34 -#define XFS_TRANS_SB_UNIT 35 -#define XFS_TRANS_FSYNC_TS 36 -#define XFS_TRANS_GROWFSRT_ALLOC 37 -#define XFS_TRANS_GROWFSRT_ZERO 38 -#define XFS_TRANS_GROWFSRT_FREE 39 -#define XFS_TRANS_SWAPEXT 40 -#define XFS_TRANS_SB_COUNT 41 -#define XFS_TRANS_CHECKPOINT 42 -#define XFS_TRANS_ICREATE 43 -#define XFS_TRANS_TYPE_MAX 43 -/* new transaction types need to be reflected in xfs_logprint(8) */ - -#define XFS_TRANS_TYPES \ - { XFS_TRANS_SETATTR_NOT_SIZE, "SETATTR_NOT_SIZE" }, \ - { XFS_TRANS_SETATTR_SIZE, "SETATTR_SIZE" }, \ - { XFS_TRANS_INACTIVE, "INACTIVE" }, \ - { XFS_TRANS_CREATE, "CREATE" }, \ - { XFS_TRANS_CREATE_TRUNC, "CREATE_TRUNC" }, \ - { XFS_TRANS_TRUNCATE_FILE, "TRUNCATE_FILE" }, \ - { XFS_TRANS_REMOVE, "REMOVE" }, \ - { XFS_TRANS_LINK, "LINK" }, \ - { XFS_TRANS_RENAME, "RENAME" }, \ - { XFS_TRANS_MKDIR, "MKDIR" }, \ - { XFS_TRANS_RMDIR, "RMDIR" }, \ - { XFS_TRANS_SYMLINK, "SYMLINK" }, \ - { XFS_TRANS_SET_DMATTRS, "SET_DMATTRS" }, \ - { XFS_TRANS_GROWFS, "GROWFS" }, \ - { XFS_TRANS_STRAT_WRITE, "STRAT_WRITE" }, \ - { XFS_TRANS_DIOSTRAT, "DIOSTRAT" }, \ - { XFS_TRANS_WRITEID, "WRITEID" }, \ - { XFS_TRANS_ADDAFORK, "ADDAFORK" }, \ - { XFS_TRANS_ATTRINVAL, "ATTRINVAL" }, \ - { XFS_TRANS_ATRUNCATE, "ATRUNCATE" }, \ - { XFS_TRANS_ATTR_SET, "ATTR_SET" }, \ - { XFS_TRANS_ATTR_RM, "ATTR_RM" }, \ - { XFS_TRANS_ATTR_FLAG, "ATTR_FLAG" }, \ - { XFS_TRANS_CLEAR_AGI_BUCKET, "CLEAR_AGI_BUCKET" }, \ - { XFS_TRANS_QM_SBCHANGE, "QM_SBCHANGE" }, \ - { XFS_TRANS_QM_QUOTAOFF, "QM_QUOTAOFF" }, \ - { XFS_TRANS_QM_DQALLOC, "QM_DQALLOC" }, \ - { XFS_TRANS_QM_SETQLIM, "QM_SETQLIM" }, \ - { XFS_TRANS_QM_DQCLUSTER, "QM_DQCLUSTER" }, \ - { XFS_TRANS_QM_QINOCREATE, "QM_QINOCREATE" }, \ - { XFS_TRANS_QM_QUOTAOFF_END, "QM_QOFF_END" }, \ - { XFS_TRANS_SB_UNIT, "SB_UNIT" }, \ - { XFS_TRANS_FSYNC_TS, "FSYNC_TS" }, \ - { XFS_TRANS_GROWFSRT_ALLOC, "GROWFSRT_ALLOC" }, \ - { XFS_TRANS_GROWFSRT_ZERO, "GROWFSRT_ZERO" }, \ - { XFS_TRANS_GROWFSRT_FREE, "GROWFSRT_FREE" }, \ - { XFS_TRANS_SWAPEXT, "SWAPEXT" }, \ - { XFS_TRANS_SB_COUNT, "SB_COUNT" }, \ - { XFS_TRANS_CHECKPOINT, "CHECKPOINT" }, \ - { XFS_TRANS_DUMMY1, "DUMMY1" }, \ - { XFS_TRANS_DUMMY2, "DUMMY2" }, \ - { XLOG_UNMOUNT_REC_TYPE, "UNMOUNT" } - -/* - * This structure is used to track log items associated with - * a transaction. It points to the log item and keeps some - * flags to track the state of the log item. It also tracks - * the amount of space needed to log the item it describes - * once we get to commit processing (see xfs_trans_commit()). - */ -struct xfs_log_item_desc { - struct xfs_log_item *lid_item; - struct list_head lid_trans; - unsigned char lid_flags; -}; - -#define XFS_LID_DIRTY 0x1 - -#define XFS_TRANS_MAGIC 0x5452414E /* 'TRAN' */ -/* - * Values for t_flags. - */ -#define XFS_TRANS_DIRTY 0x01 /* something needs to be logged */ -#define XFS_TRANS_SB_DIRTY 0x02 /* superblock is modified */ -#define XFS_TRANS_PERM_LOG_RES 0x04 /* xact took a permanent log res */ -#define XFS_TRANS_SYNC 0x08 /* make commit synchronous */ -#define XFS_TRANS_DQ_DIRTY 0x10 /* at least one dquot in trx dirty */ -#define XFS_TRANS_RESERVE 0x20 /* OK to use reserved data blocks */ -#define XFS_TRANS_FREEZE_PROT 0x40 /* Transaction has elevated writer - count in superblock */ - -/* - * Values for call flags parameter. - */ -#define XFS_TRANS_RELEASE_LOG_RES 0x4 -#define XFS_TRANS_ABORT 0x8 - -/* - * Field values for xfs_trans_mod_sb. - */ -#define XFS_TRANS_SB_ICOUNT 0x00000001 -#define XFS_TRANS_SB_IFREE 0x00000002 -#define XFS_TRANS_SB_FDBLOCKS 0x00000004 -#define XFS_TRANS_SB_RES_FDBLOCKS 0x00000008 -#define XFS_TRANS_SB_FREXTENTS 0x00000010 -#define XFS_TRANS_SB_RES_FREXTENTS 0x00000020 -#define XFS_TRANS_SB_DBLOCKS 0x00000040 -#define XFS_TRANS_SB_AGCOUNT 0x00000080 -#define XFS_TRANS_SB_IMAXPCT 0x00000100 -#define XFS_TRANS_SB_REXTSIZE 0x00000200 -#define XFS_TRANS_SB_RBMBLOCKS 0x00000400 -#define XFS_TRANS_SB_RBLOCKS 0x00000800 -#define XFS_TRANS_SB_REXTENTS 0x00001000 -#define XFS_TRANS_SB_REXTSLOG 0x00002000 - - -/* - * Per-extent log reservation for the allocation btree changes - * involved in freeing or allocating an extent. - * 2 trees * (2 blocks/level * max depth - 1) - */ -#define XFS_ALLOCFREE_LOG_COUNT(mp,nx) \ - ((nx) * (2 * (2 * XFS_AG_MAXLEVELS(mp) - 1))) - -/* - * Per-directory log reservation for any directory change. - * dir blocks: (1 btree block per level + data block + free block) - * bmap btree: (levels + 2) * max depth - * v2 directory blocks can be fragmented below the dirblksize down to the fsb - * size, so account for that in the DAENTER macros. - */ -#define XFS_DIROP_LOG_COUNT(mp) \ - (XFS_DAENTER_BLOCKS(mp, XFS_DATA_FORK) + \ - XFS_DAENTER_BMAPS(mp, XFS_DATA_FORK) + 1) - +#include "xfs_trans_resv.h" -#define XFS_WRITE_LOG_RES(mp) ((mp)->m_reservations.tr_write) -#define XFS_ITRUNCATE_LOG_RES(mp) ((mp)->m_reservations.tr_itruncate) -#define XFS_RENAME_LOG_RES(mp) ((mp)->m_reservations.tr_rename) -#define XFS_LINK_LOG_RES(mp) ((mp)->m_reservations.tr_link) -#define XFS_REMOVE_LOG_RES(mp) ((mp)->m_reservations.tr_remove) -#define XFS_SYMLINK_LOG_RES(mp) ((mp)->m_reservations.tr_symlink) -#define XFS_CREATE_LOG_RES(mp) ((mp)->m_reservations.tr_create) -#define XFS_MKDIR_LOG_RES(mp) ((mp)->m_reservations.tr_mkdir) -#define XFS_IFREE_LOG_RES(mp) ((mp)->m_reservations.tr_ifree) -#define XFS_ICHANGE_LOG_RES(mp) ((mp)->m_reservations.tr_ichange) -#define XFS_GROWDATA_LOG_RES(mp) ((mp)->m_reservations.tr_growdata) -#define XFS_GROWRTALLOC_LOG_RES(mp) ((mp)->m_reservations.tr_growrtalloc) -#define XFS_GROWRTZERO_LOG_RES(mp) ((mp)->m_reservations.tr_growrtzero) -#define XFS_GROWRTFREE_LOG_RES(mp) ((mp)->m_reservations.tr_growrtfree) -#define XFS_SWRITE_LOG_RES(mp) ((mp)->m_reservations.tr_swrite) -/* - * Logging the inode timestamps on an fsync -- same as SWRITE - * as long as SWRITE logs the entire inode core - */ -#define XFS_FSYNC_TS_LOG_RES(mp) ((mp)->m_reservations.tr_swrite) -#define XFS_WRITEID_LOG_RES(mp) ((mp)->m_reservations.tr_swrite) -#define XFS_ADDAFORK_LOG_RES(mp) ((mp)->m_reservations.tr_addafork) -#define XFS_ATTRINVAL_LOG_RES(mp) ((mp)->m_reservations.tr_attrinval) -#define XFS_ATTRSETM_LOG_RES(mp) ((mp)->m_reservations.tr_attrsetm) -#define XFS_ATTRSETRT_LOG_RES(mp) ((mp)->m_reservations.tr_attrsetrt) -#define XFS_ATTRRM_LOG_RES(mp) ((mp)->m_reservations.tr_attrrm) -#define XFS_CLEAR_AGI_BUCKET_LOG_RES(mp) ((mp)->m_reservations.tr_clearagi) -#define XFS_QM_SBCHANGE_LOG_RES(mp) ((mp)->m_reservations.tr_qm_sbchange) -#define XFS_QM_SETQLIM_LOG_RES(mp) ((mp)->m_reservations.tr_qm_setqlim) -#define XFS_QM_DQALLOC_LOG_RES(mp) ((mp)->m_reservations.tr_qm_dqalloc) -#define XFS_QM_QUOTAOFF_LOG_RES(mp) ((mp)->m_reservations.tr_qm_quotaoff) -#define XFS_QM_QUOTAOFF_END_LOG_RES(mp) ((mp)->m_reservations.tr_qm_equotaoff) -#define XFS_SB_LOG_RES(mp) ((mp)->m_reservations.tr_sb) - -/* - * Various log count values. - */ -#define XFS_DEFAULT_LOG_COUNT 1 -#define XFS_DEFAULT_PERM_LOG_COUNT 2 -#define XFS_ITRUNCATE_LOG_COUNT 2 -#define XFS_INACTIVE_LOG_COUNT 2 -#define XFS_CREATE_LOG_COUNT 2 -#define XFS_MKDIR_LOG_COUNT 3 -#define XFS_SYMLINK_LOG_COUNT 3 -#define XFS_REMOVE_LOG_COUNT 2 -#define XFS_LINK_LOG_COUNT 2 -#define XFS_RENAME_LOG_COUNT 2 -#define XFS_WRITE_LOG_COUNT 2 -#define XFS_ADDAFORK_LOG_COUNT 2 -#define XFS_ATTRINVAL_LOG_COUNT 1 -#define XFS_ATTRSET_LOG_COUNT 3 -#define XFS_ATTRRM_LOG_COUNT 3 - -/* - * Here we centralize the specification of XFS meta-data buffer - * reference count values. This determine how hard the buffer - * cache tries to hold onto the buffer. - */ -#define XFS_AGF_REF 4 -#define XFS_AGI_REF 4 -#define XFS_AGFL_REF 3 -#define XFS_INO_BTREE_REF 3 -#define XFS_ALLOC_BTREE_REF 2 -#define XFS_BMAP_BTREE_REF 2 -#define XFS_DIR_BTREE_REF 2 -#define XFS_INO_REF 2 -#define XFS_ATTR_BTREE_REF 1 -#define XFS_DQUOT_REF 1 - -#ifdef __KERNEL__ +/* kernel only transaction subsystem defines */ struct xfs_buf; struct xfs_buftarg; @@ -310,6 +34,7 @@ struct xfs_log_iovec; struct xfs_log_item_desc; struct xfs_mount; struct xfs_trans; +struct xfs_trans_res; struct xfs_dquot_acct; struct xfs_busy_extent; @@ -342,7 +67,7 @@ typedef struct xfs_log_item { { XFS_LI_ABORTED, "ABORTED" } struct xfs_item_ops { - uint (*iop_size)(xfs_log_item_t *); + void (*iop_size)(xfs_log_item_t *, int *, int *); void (*iop_format)(xfs_log_item_t *, struct xfs_log_iovec *); void (*iop_pin)(xfs_log_item_t *); void (*iop_unpin)(xfs_log_item_t *, int remove); @@ -352,17 +77,8 @@ struct xfs_item_ops { void (*iop_committing)(xfs_log_item_t *, xfs_lsn_t); }; -#define IOP_SIZE(ip) (*(ip)->li_ops->iop_size)(ip) -#define IOP_FORMAT(ip,vp) (*(ip)->li_ops->iop_format)(ip, vp) -#define IOP_PIN(ip) (*(ip)->li_ops->iop_pin)(ip) -#define IOP_UNPIN(ip, remove) (*(ip)->li_ops->iop_unpin)(ip, remove) -#define IOP_PUSH(ip, list) (*(ip)->li_ops->iop_push)(ip, list) -#define IOP_UNLOCK(ip) (*(ip)->li_ops->iop_unlock)(ip) -#define IOP_COMMITTED(ip, lsn) (*(ip)->li_ops->iop_committed)(ip, lsn) -#define IOP_COMMITTING(ip, lsn) (*(ip)->li_ops->iop_committing)(ip, lsn) - /* - * Return values for the IOP_PUSH() routines. + * Return values for the iop_push() routines. */ #define XFS_ITEM_SUCCESS 0 #define XFS_ITEM_PINNED 1 @@ -446,7 +162,7 @@ typedef struct xfs_trans { xfs_trans_t *xfs_trans_alloc(struct xfs_mount *, uint); xfs_trans_t *_xfs_trans_alloc(struct xfs_mount *, uint, xfs_km_flags_t); xfs_trans_t *xfs_trans_dup(xfs_trans_t *); -int xfs_trans_reserve(xfs_trans_t *, uint, uint, uint, +int xfs_trans_reserve(struct xfs_trans *, struct xfs_trans_res *, uint, uint); void xfs_trans_mod_sb(xfs_trans_t *, uint, int64_t); @@ -528,9 +244,4 @@ void xfs_trans_ail_destroy(struct xfs_mount *); extern kmem_zone_t *xfs_trans_zone; extern kmem_zone_t *xfs_log_item_desc_zone; -#endif /* __KERNEL__ */ - -void xfs_trans_init(struct xfs_mount *); -int xfs_trans_roll(struct xfs_trans **, struct xfs_inode *); - #endif /* __XFS_TRANS_H__ */ diff --git a/fs/xfs/xfs_trans_ail.c b/fs/xfs/xfs_trans_ail.c index 0eda725..21c6d7d 100644 --- a/fs/xfs/xfs_trans_ail.c +++ b/fs/xfs/xfs_trans_ail.c @@ -61,20 +61,6 @@ xfs_ail_check( #endif /* DEBUG */ /* - * Return a pointer to the first item in the AIL. If the AIL is empty, then - * return NULL. - */ -xfs_log_item_t * -xfs_ail_min( - struct xfs_ail *ailp) -{ - if (list_empty(&ailp->xa_ail)) - return NULL; - - return list_first_entry(&ailp->xa_ail, xfs_log_item_t, li_ail); -} - - /* * Return a pointer to the last item in the AIL. If the AIL is empty, then * return NULL. */ @@ -393,11 +379,11 @@ xfsaild_push( int lock_result; /* - * Note that IOP_PUSH may unlock and reacquire the AIL lock. We + * Note that iop_push may unlock and reacquire the AIL lock. We * rely on the AIL cursor implementation to be able to deal with * the dropped lock. */ - lock_result = IOP_PUSH(lip, &ailp->xa_buf_list); + lock_result = lip->li_ops->iop_push(lip, &ailp->xa_buf_list); switch (lock_result) { case XFS_ITEM_SUCCESS: XFS_STATS_INC(xs_push_ail_success); diff --git a/fs/xfs/xfs_trans_buf.c b/fs/xfs/xfs_trans_buf.c index aa5a04b..8c75b8f 100644 --- a/fs/xfs/xfs_trans_buf.c +++ b/fs/xfs/xfs_trans_buf.c @@ -505,7 +505,7 @@ xfs_trans_brelse(xfs_trans_t *tp, /* * Mark the buffer as not needing to be unlocked when the buf item's - * IOP_UNLOCK() routine is called. The buffer must already be locked + * iop_unlock() routine is called. The buffer must already be locked * and associated with the given transaction. */ /* ARGSUSED */ diff --git a/fs/xfs/xfs_trans_dquot.c b/fs/xfs/xfs_trans_dquot.c index 61407a8..54ee3c5 100644 --- a/fs/xfs/xfs_trans_dquot.c +++ b/fs/xfs/xfs_trans_dquot.c @@ -17,6 +17,7 @@ */ #include "xfs.h" #include "xfs_fs.h" +#include "xfs_format.h" #include "xfs_log.h" #include "xfs_trans.h" #include "xfs_sb.h" diff --git a/fs/xfs/xfs_trans_priv.h b/fs/xfs/xfs_trans_priv.h index 53b7c9b..c52def0 100644 --- a/fs/xfs/xfs_trans_priv.h +++ b/fs/xfs/xfs_trans_priv.h @@ -25,6 +25,9 @@ struct xfs_trans; struct xfs_ail; struct xfs_log_vec; + +void xfs_trans_init(struct xfs_mount *); +int xfs_trans_roll(struct xfs_trans **, struct xfs_inode *); void xfs_trans_add_item(struct xfs_trans *, struct xfs_log_item *); void xfs_trans_del_item(struct xfs_log_item *); void xfs_trans_free_items(struct xfs_trans *tp, xfs_lsn_t commit_lsn, @@ -83,6 +86,18 @@ void xfs_trans_ail_update_bulk(struct xfs_ail *ailp, struct xfs_ail_cursor *cur, struct xfs_log_item **log_items, int nr_items, xfs_lsn_t lsn) __releases(ailp->xa_lock); +/* + * Return a pointer to the first item in the AIL. If the AIL is empty, then + * return NULL. + */ +static inline struct xfs_log_item * +xfs_ail_min( + struct xfs_ail *ailp) +{ + return list_first_entry_or_null(&ailp->xa_ail, struct xfs_log_item, + li_ail); +} + static inline void xfs_trans_ail_update( struct xfs_ail *ailp, diff --git a/fs/xfs/xfs_trans_resv.c b/fs/xfs/xfs_trans_resv.c new file mode 100644 index 0000000..a65a3cc4 --- /dev/null +++ b/fs/xfs/xfs_trans_resv.c @@ -0,0 +1,803 @@ +/* + * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. + * Copyright (C) 2010 Red Hat, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include "xfs.h" +#include "xfs_fs.h" +#include "xfs_format.h" +#include "xfs_log.h" +#include "xfs_trans_resv.h" +#include "xfs_trans.h" +#include "xfs_sb.h" +#include "xfs_ag.h" +#include "xfs_mount.h" +#include "xfs_error.h" +#include "xfs_da_btree.h" +#include "xfs_bmap_btree.h" +#include "xfs_alloc_btree.h" +#include "xfs_ialloc_btree.h" +#include "xfs_dinode.h" +#include "xfs_inode.h" +#include "xfs_btree.h" +#include "xfs_ialloc.h" +#include "xfs_alloc.h" +#include "xfs_extent_busy.h" +#include "xfs_bmap.h" +#include "xfs_bmap_util.h" +#include "xfs_quota.h" +#include "xfs_qm.h" +#include "xfs_trans_space.h" +#include "xfs_trace.h" + +/* + * A buffer has a format structure overhead in the log in addition + * to the data, so we need to take this into account when reserving + * space in a transaction for a buffer. Round the space required up + * to a multiple of 128 bytes so that we don't change the historical + * reservation that has been used for this overhead. + */ +STATIC uint +xfs_buf_log_overhead(void) +{ + return round_up(sizeof(struct xlog_op_header) + + sizeof(struct xfs_buf_log_format), 128); +} + +/* + * Calculate out transaction log reservation per item in bytes. + * + * The nbufs argument is used to indicate the number of items that + * will be changed in a transaction. size is used to tell how many + * bytes should be reserved per item. + */ +STATIC uint +xfs_calc_buf_res( + uint nbufs, + uint size) +{ + return nbufs * (size + xfs_buf_log_overhead()); +} + +/* + * Logging inodes is really tricksy. They are logged in memory format, + * which means that what we write into the log doesn't directly translate into + * the amount of space they use on disk. + * + * Case in point - btree format forks in memory format use more space than the + * on-disk format. In memory, the buffer contains a normal btree block header so + * the btree code can treat it as though it is just another generic buffer. + * However, when we write it to the inode fork, we don't write all of this + * header as it isn't needed. e.g. the root is only ever in the inode, so + * there's no need for sibling pointers which would waste 16 bytes of space. + * + * Hence when we have an inode with a maximally sized btree format fork, then + * amount of information we actually log is greater than the size of the inode + * on disk. Hence we need an inode reservation function that calculates all this + * correctly. So, we log: + * + * - log op headers for object + * - inode log format object + * - the entire inode contents (core + 2 forks) + * - two bmap btree block headers + */ +STATIC uint +xfs_calc_inode_res( + struct xfs_mount *mp, + uint ninodes) +{ + return ninodes * (sizeof(struct xlog_op_header) + + sizeof(struct xfs_inode_log_format) + + mp->m_sb.sb_inodesize + + 2 * XFS_BMBT_BLOCK_LEN(mp)); +} + +/* + * Various log reservation values. + * + * These are based on the size of the file system block because that is what + * most transactions manipulate. Each adds in an additional 128 bytes per + * item logged to try to account for the overhead of the transaction mechanism. + * + * Note: Most of the reservations underestimate the number of allocation + * groups into which they could free extents in the xfs_bmap_finish() call. + * This is because the number in the worst case is quite high and quite + * unusual. In order to fix this we need to change xfs_bmap_finish() to free + * extents in only a single AG at a time. This will require changes to the + * EFI code as well, however, so that the EFI for the extents not freed is + * logged again in each transaction. See SGI PV #261917. + * + * Reservation functions here avoid a huge stack in xfs_trans_init due to + * register overflow from temporaries in the calculations. + */ + + +/* + * In a write transaction we can allocate a maximum of 2 + * extents. This gives: + * the inode getting the new extents: inode size + * the inode's bmap btree: max depth * block size + * the agfs of the ags from which the extents are allocated: 2 * sector + * the superblock free block counter: sector size + * the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size + * And the bmap_finish transaction can free bmap blocks in a join: + * the agfs of the ags containing the blocks: 2 * sector size + * the agfls of the ags containing the blocks: 2 * sector size + * the super block free block counter: sector size + * the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size + */ +STATIC uint +xfs_calc_write_reservation( + struct xfs_mount *mp) +{ + return XFS_DQUOT_LOGRES(mp) + + MAX((xfs_calc_inode_res(mp, 1) + + xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK), + XFS_FSB_TO_B(mp, 1)) + + xfs_calc_buf_res(3, mp->m_sb.sb_sectsize) + + xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 2), + XFS_FSB_TO_B(mp, 1))), + (xfs_calc_buf_res(5, mp->m_sb.sb_sectsize) + + xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 2), + XFS_FSB_TO_B(mp, 1)))); +} + +/* + * In truncating a file we free up to two extents at once. We can modify: + * the inode being truncated: inode size + * the inode's bmap btree: (max depth + 1) * block size + * And the bmap_finish transaction can free the blocks and bmap blocks: + * the agf for each of the ags: 4 * sector size + * the agfl for each of the ags: 4 * sector size + * the super block to reflect the freed blocks: sector size + * worst case split in allocation btrees per extent assuming 4 extents: + * 4 exts * 2 trees * (2 * max depth - 1) * block size + * the inode btree: max depth * blocksize + * the allocation btrees: 2 trees * (max depth - 1) * block size + */ +STATIC uint +xfs_calc_itruncate_reservation( + struct xfs_mount *mp) +{ + return XFS_DQUOT_LOGRES(mp) + + MAX((xfs_calc_inode_res(mp, 1) + + xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) + 1, + XFS_FSB_TO_B(mp, 1))), + (xfs_calc_buf_res(9, mp->m_sb.sb_sectsize) + + xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 4), + XFS_FSB_TO_B(mp, 1)) + + xfs_calc_buf_res(5, 0) + + xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), + XFS_FSB_TO_B(mp, 1)) + + xfs_calc_buf_res(2 + XFS_IALLOC_BLOCKS(mp) + + mp->m_in_maxlevels, 0))); +} + +/* + * In renaming a files we can modify: + * the four inodes involved: 4 * inode size + * the two directory btrees: 2 * (max depth + v2) * dir block size + * the two directory bmap btrees: 2 * max depth * block size + * And the bmap_finish transaction can free dir and bmap blocks (two sets + * of bmap blocks) giving: + * the agf for the ags in which the blocks live: 3 * sector size + * the agfl for the ags in which the blocks live: 3 * sector size + * the superblock for the free block count: sector size + * the allocation btrees: 3 exts * 2 trees * (2 * max depth - 1) * block size + */ +STATIC uint +xfs_calc_rename_reservation( + struct xfs_mount *mp) +{ + return XFS_DQUOT_LOGRES(mp) + + MAX((xfs_calc_inode_res(mp, 4) + + xfs_calc_buf_res(2 * XFS_DIROP_LOG_COUNT(mp), + XFS_FSB_TO_B(mp, 1))), + (xfs_calc_buf_res(7, mp->m_sb.sb_sectsize) + + xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 3), + XFS_FSB_TO_B(mp, 1)))); +} + +/* + * For creating a link to an inode: + * the parent directory inode: inode size + * the linked inode: inode size + * the directory btree could split: (max depth + v2) * dir block size + * the directory bmap btree could join or split: (max depth + v2) * blocksize + * And the bmap_finish transaction can free some bmap blocks giving: + * the agf for the ag in which the blocks live: sector size + * the agfl for the ag in which the blocks live: sector size + * the superblock for the free block count: sector size + * the allocation btrees: 2 trees * (2 * max depth - 1) * block size + */ +STATIC uint +xfs_calc_link_reservation( + struct xfs_mount *mp) +{ + return XFS_DQUOT_LOGRES(mp) + + MAX((xfs_calc_inode_res(mp, 2) + + xfs_calc_buf_res(XFS_DIROP_LOG_COUNT(mp), + XFS_FSB_TO_B(mp, 1))), + (xfs_calc_buf_res(3, mp->m_sb.sb_sectsize) + + xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), + XFS_FSB_TO_B(mp, 1)))); +} + +/* + * For removing a directory entry we can modify: + * the parent directory inode: inode size + * the removed inode: inode size + * the directory btree could join: (max depth + v2) * dir block size + * the directory bmap btree could join or split: (max depth + v2) * blocksize + * And the bmap_finish transaction can free the dir and bmap blocks giving: + * the agf for the ag in which the blocks live: 2 * sector size + * the agfl for the ag in which the blocks live: 2 * sector size + * the superblock for the free block count: sector size + * the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size + */ +STATIC uint +xfs_calc_remove_reservation( + struct xfs_mount *mp) +{ + return XFS_DQUOT_LOGRES(mp) + + MAX((xfs_calc_inode_res(mp, 2) + + xfs_calc_buf_res(XFS_DIROP_LOG_COUNT(mp), + XFS_FSB_TO_B(mp, 1))), + (xfs_calc_buf_res(5, mp->m_sb.sb_sectsize) + + xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 2), + XFS_FSB_TO_B(mp, 1)))); +} + +/* + * For create, break it in to the two cases that the transaction + * covers. We start with the modify case - allocation done by modification + * of the state of existing inodes - and the allocation case. + */ + +/* + * For create we can modify: + * the parent directory inode: inode size + * the new inode: inode size + * the inode btree entry: block size + * the superblock for the nlink flag: sector size + * the directory btree: (max depth + v2) * dir block size + * the directory inode's bmap btree: (max depth + v2) * block size + */ +STATIC uint +xfs_calc_create_resv_modify( + struct xfs_mount *mp) +{ + return xfs_calc_inode_res(mp, 2) + + xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) + + (uint)XFS_FSB_TO_B(mp, 1) + + xfs_calc_buf_res(XFS_DIROP_LOG_COUNT(mp), XFS_FSB_TO_B(mp, 1)); +} + +/* + * For create we can allocate some inodes giving: + * the agi and agf of the ag getting the new inodes: 2 * sectorsize + * the superblock for the nlink flag: sector size + * the inode blocks allocated: XFS_IALLOC_BLOCKS * blocksize + * the inode btree: max depth * blocksize + * the allocation btrees: 2 trees * (max depth - 1) * block size + */ +STATIC uint +xfs_calc_create_resv_alloc( + struct xfs_mount *mp) +{ + return xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) + + mp->m_sb.sb_sectsize + + xfs_calc_buf_res(XFS_IALLOC_BLOCKS(mp), XFS_FSB_TO_B(mp, 1)) + + xfs_calc_buf_res(mp->m_in_maxlevels, XFS_FSB_TO_B(mp, 1)) + + xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), + XFS_FSB_TO_B(mp, 1)); +} + +STATIC uint +__xfs_calc_create_reservation( + struct xfs_mount *mp) +{ + return XFS_DQUOT_LOGRES(mp) + + MAX(xfs_calc_create_resv_alloc(mp), + xfs_calc_create_resv_modify(mp)); +} + +/* + * For icreate we can allocate some inodes giving: + * the agi and agf of the ag getting the new inodes: 2 * sectorsize + * the superblock for the nlink flag: sector size + * the inode btree: max depth * blocksize + * the allocation btrees: 2 trees * (max depth - 1) * block size + */ +STATIC uint +xfs_calc_icreate_resv_alloc( + struct xfs_mount *mp) +{ + return xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) + + mp->m_sb.sb_sectsize + + xfs_calc_buf_res(mp->m_in_maxlevels, XFS_FSB_TO_B(mp, 1)) + + xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), + XFS_FSB_TO_B(mp, 1)); +} + +STATIC uint +xfs_calc_icreate_reservation(xfs_mount_t *mp) +{ + return XFS_DQUOT_LOGRES(mp) + + MAX(xfs_calc_icreate_resv_alloc(mp), + xfs_calc_create_resv_modify(mp)); +} + +STATIC uint +xfs_calc_create_reservation( + struct xfs_mount *mp) +{ + if (xfs_sb_version_hascrc(&mp->m_sb)) + return xfs_calc_icreate_reservation(mp); + return __xfs_calc_create_reservation(mp); + +} + +/* + * Making a new directory is the same as creating a new file. + */ +STATIC uint +xfs_calc_mkdir_reservation( + struct xfs_mount *mp) +{ + return xfs_calc_create_reservation(mp); +} + + +/* + * Making a new symplink is the same as creating a new file, but + * with the added blocks for remote symlink data which can be up to 1kB in + * length (MAXPATHLEN). + */ +STATIC uint +xfs_calc_symlink_reservation( + struct xfs_mount *mp) +{ + return xfs_calc_create_reservation(mp) + + xfs_calc_buf_res(1, MAXPATHLEN); +} + +/* + * In freeing an inode we can modify: + * the inode being freed: inode size + * the super block free inode counter: sector size + * the agi hash list and counters: sector size + * the inode btree entry: block size + * the on disk inode before ours in the agi hash list: inode cluster size + * the inode btree: max depth * blocksize + * the allocation btrees: 2 trees * (max depth - 1) * block size + */ +STATIC uint +xfs_calc_ifree_reservation( + struct xfs_mount *mp) +{ + return XFS_DQUOT_LOGRES(mp) + + xfs_calc_inode_res(mp, 1) + + xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) + + xfs_calc_buf_res(1, XFS_FSB_TO_B(mp, 1)) + + MAX((__uint16_t)XFS_FSB_TO_B(mp, 1), + XFS_INODE_CLUSTER_SIZE(mp)) + + xfs_calc_buf_res(1, 0) + + xfs_calc_buf_res(2 + XFS_IALLOC_BLOCKS(mp) + + mp->m_in_maxlevels, 0) + + xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), + XFS_FSB_TO_B(mp, 1)); +} + +/* + * When only changing the inode we log the inode and possibly the superblock + * We also add a bit of slop for the transaction stuff. + */ +STATIC uint +xfs_calc_ichange_reservation( + struct xfs_mount *mp) +{ + return XFS_DQUOT_LOGRES(mp) + + xfs_calc_inode_res(mp, 1) + + xfs_calc_buf_res(1, mp->m_sb.sb_sectsize); + +} + +/* + * Growing the data section of the filesystem. + * superblock + * agi and agf + * allocation btrees + */ +STATIC uint +xfs_calc_growdata_reservation( + struct xfs_mount *mp) +{ + return xfs_calc_buf_res(3, mp->m_sb.sb_sectsize) + + xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), + XFS_FSB_TO_B(mp, 1)); +} + +/* + * Growing the rt section of the filesystem. + * In the first set of transactions (ALLOC) we allocate space to the + * bitmap or summary files. + * superblock: sector size + * agf of the ag from which the extent is allocated: sector size + * bmap btree for bitmap/summary inode: max depth * blocksize + * bitmap/summary inode: inode size + * allocation btrees for 1 block alloc: 2 * (2 * maxdepth - 1) * blocksize + */ +STATIC uint +xfs_calc_growrtalloc_reservation( + struct xfs_mount *mp) +{ + return xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) + + xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK), + XFS_FSB_TO_B(mp, 1)) + + xfs_calc_inode_res(mp, 1) + + xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), + XFS_FSB_TO_B(mp, 1)); +} + +/* + * Growing the rt section of the filesystem. + * In the second set of transactions (ZERO) we zero the new metadata blocks. + * one bitmap/summary block: blocksize + */ +STATIC uint +xfs_calc_growrtzero_reservation( + struct xfs_mount *mp) +{ + return xfs_calc_buf_res(1, mp->m_sb.sb_blocksize); +} + +/* + * Growing the rt section of the filesystem. + * In the third set of transactions (FREE) we update metadata without + * allocating any new blocks. + * superblock: sector size + * bitmap inode: inode size + * summary inode: inode size + * one bitmap block: blocksize + * summary blocks: new summary size + */ +STATIC uint +xfs_calc_growrtfree_reservation( + struct xfs_mount *mp) +{ + return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) + + xfs_calc_inode_res(mp, 2) + + xfs_calc_buf_res(1, mp->m_sb.sb_blocksize) + + xfs_calc_buf_res(1, mp->m_rsumsize); +} + +/* + * Logging the inode modification timestamp on a synchronous write. + * inode + */ +STATIC uint +xfs_calc_swrite_reservation( + struct xfs_mount *mp) +{ + return xfs_calc_inode_res(mp, 1); +} + +/* + * Logging the inode mode bits when writing a setuid/setgid file + * inode + */ +STATIC uint +xfs_calc_writeid_reservation( + struct xfs_mount *mp) +{ + return xfs_calc_inode_res(mp, 1); +} + +/* + * Converting the inode from non-attributed to attributed. + * the inode being converted: inode size + * agf block and superblock (for block allocation) + * the new block (directory sized) + * bmap blocks for the new directory block + * allocation btrees + */ +STATIC uint +xfs_calc_addafork_reservation( + struct xfs_mount *mp) +{ + return XFS_DQUOT_LOGRES(mp) + + xfs_calc_inode_res(mp, 1) + + xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) + + xfs_calc_buf_res(1, mp->m_dirblksize) + + xfs_calc_buf_res(XFS_DAENTER_BMAP1B(mp, XFS_DATA_FORK) + 1, + XFS_FSB_TO_B(mp, 1)) + + xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), + XFS_FSB_TO_B(mp, 1)); +} + +/* + * Removing the attribute fork of a file + * the inode being truncated: inode size + * the inode's bmap btree: max depth * block size + * And the bmap_finish transaction can free the blocks and bmap blocks: + * the agf for each of the ags: 4 * sector size + * the agfl for each of the ags: 4 * sector size + * the super block to reflect the freed blocks: sector size + * worst case split in allocation btrees per extent assuming 4 extents: + * 4 exts * 2 trees * (2 * max depth - 1) * block size + */ +STATIC uint +xfs_calc_attrinval_reservation( + struct xfs_mount *mp) +{ + return MAX((xfs_calc_inode_res(mp, 1) + + xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK), + XFS_FSB_TO_B(mp, 1))), + (xfs_calc_buf_res(9, mp->m_sb.sb_sectsize) + + xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 4), + XFS_FSB_TO_B(mp, 1)))); +} + +/* + * Setting an attribute at mount time. + * the inode getting the attribute + * the superblock for allocations + * the agfs extents are allocated from + * the attribute btree * max depth + * the inode allocation btree + * Since attribute transaction space is dependent on the size of the attribute, + * the calculation is done partially at mount time and partially at runtime(see + * below). + */ +STATIC uint +xfs_calc_attrsetm_reservation( + struct xfs_mount *mp) +{ + return XFS_DQUOT_LOGRES(mp) + + xfs_calc_inode_res(mp, 1) + + xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) + + xfs_calc_buf_res(XFS_DA_NODE_MAXDEPTH, XFS_FSB_TO_B(mp, 1)); +} + +/* + * Setting an attribute at runtime, transaction space unit per block. + * the superblock for allocations: sector size + * the inode bmap btree could join or split: max depth * block size + * Since the runtime attribute transaction space is dependent on the total + * blocks needed for the 1st bmap, here we calculate out the space unit for + * one block so that the caller could figure out the total space according + * to the attibute extent length in blocks by: + * ext * M_RES(mp)->tr_attrsetrt.tr_logres + */ +STATIC uint +xfs_calc_attrsetrt_reservation( + struct xfs_mount *mp) +{ + return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) + + xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK), + XFS_FSB_TO_B(mp, 1)); +} + +/* + * Removing an attribute. + * the inode: inode size + * the attribute btree could join: max depth * block size + * the inode bmap btree could join or split: max depth * block size + * And the bmap_finish transaction can free the attr blocks freed giving: + * the agf for the ag in which the blocks live: 2 * sector size + * the agfl for the ag in which the blocks live: 2 * sector size + * the superblock for the free block count: sector size + * the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size + */ +STATIC uint +xfs_calc_attrrm_reservation( + struct xfs_mount *mp) +{ + return XFS_DQUOT_LOGRES(mp) + + MAX((xfs_calc_inode_res(mp, 1) + + xfs_calc_buf_res(XFS_DA_NODE_MAXDEPTH, + XFS_FSB_TO_B(mp, 1)) + + (uint)XFS_FSB_TO_B(mp, + XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)) + + xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK), 0)), + (xfs_calc_buf_res(5, mp->m_sb.sb_sectsize) + + xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 2), + XFS_FSB_TO_B(mp, 1)))); +} + +/* + * Clearing a bad agino number in an agi hash bucket. + */ +STATIC uint +xfs_calc_clear_agi_bucket_reservation( + struct xfs_mount *mp) +{ + return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize); +} + +/* + * Clearing the quotaflags in the superblock. + * the super block for changing quota flags: sector size + */ +STATIC uint +xfs_calc_qm_sbchange_reservation( + struct xfs_mount *mp) +{ + return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize); +} + +/* + * Adjusting quota limits. + * the xfs_disk_dquot_t: sizeof(struct xfs_disk_dquot) + */ +STATIC uint +xfs_calc_qm_setqlim_reservation( + struct xfs_mount *mp) +{ + return xfs_calc_buf_res(1, sizeof(struct xfs_disk_dquot)); +} + +/* + * Allocating quota on disk if needed. + * the write transaction log space: M_RES(mp)->tr_write.tr_logres + * the unit of quota allocation: one system block size + */ +STATIC uint +xfs_calc_qm_dqalloc_reservation( + struct xfs_mount *mp) +{ + ASSERT(M_RES(mp)->tr_write.tr_logres); + return M_RES(mp)->tr_write.tr_logres + + xfs_calc_buf_res(1, + XFS_FSB_TO_B(mp, XFS_DQUOT_CLUSTER_SIZE_FSB) - 1); +} + +/* + * Turning off quotas. + * the xfs_qoff_logitem_t: sizeof(struct xfs_qoff_logitem) * 2 + * the superblock for the quota flags: sector size + */ +STATIC uint +xfs_calc_qm_quotaoff_reservation( + struct xfs_mount *mp) +{ + return sizeof(struct xfs_qoff_logitem) * 2 + + xfs_calc_buf_res(1, mp->m_sb.sb_sectsize); +} + +/* + * End of turning off quotas. + * the xfs_qoff_logitem_t: sizeof(struct xfs_qoff_logitem) * 2 + */ +STATIC uint +xfs_calc_qm_quotaoff_end_reservation( + struct xfs_mount *mp) +{ + return sizeof(struct xfs_qoff_logitem) * 2; +} + +/* + * Syncing the incore super block changes to disk. + * the super block to reflect the changes: sector size + */ +STATIC uint +xfs_calc_sb_reservation( + struct xfs_mount *mp) +{ + return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize); +} + +void +xfs_trans_resv_calc( + struct xfs_mount *mp, + struct xfs_trans_resv *resp) +{ + /* + * The following transactions are logged in physical format and + * require a permanent reservation on space. + */ + resp->tr_write.tr_logres = xfs_calc_write_reservation(mp); + resp->tr_write.tr_logcount = XFS_WRITE_LOG_COUNT; + resp->tr_write.tr_logflags |= XFS_TRANS_PERM_LOG_RES; + + resp->tr_itruncate.tr_logres = xfs_calc_itruncate_reservation(mp); + resp->tr_itruncate.tr_logcount = XFS_ITRUNCATE_LOG_COUNT; + resp->tr_itruncate.tr_logflags |= XFS_TRANS_PERM_LOG_RES; + + resp->tr_rename.tr_logres = xfs_calc_rename_reservation(mp); + resp->tr_rename.tr_logcount = XFS_RENAME_LOG_COUNT; + resp->tr_rename.tr_logflags |= XFS_TRANS_PERM_LOG_RES; + + resp->tr_link.tr_logres = xfs_calc_link_reservation(mp); + resp->tr_link.tr_logcount = XFS_LINK_LOG_COUNT; + resp->tr_link.tr_logflags |= XFS_TRANS_PERM_LOG_RES; + + resp->tr_remove.tr_logres = xfs_calc_remove_reservation(mp); + resp->tr_remove.tr_logcount = XFS_REMOVE_LOG_COUNT; + resp->tr_remove.tr_logflags |= XFS_TRANS_PERM_LOG_RES; + + resp->tr_symlink.tr_logres = xfs_calc_symlink_reservation(mp); + resp->tr_symlink.tr_logcount = XFS_SYMLINK_LOG_COUNT; + resp->tr_symlink.tr_logflags |= XFS_TRANS_PERM_LOG_RES; + + resp->tr_create.tr_logres = xfs_calc_create_reservation(mp); + resp->tr_create.tr_logcount = XFS_CREATE_LOG_COUNT; + resp->tr_create.tr_logflags |= XFS_TRANS_PERM_LOG_RES; + + resp->tr_mkdir.tr_logres = xfs_calc_mkdir_reservation(mp); + resp->tr_mkdir.tr_logcount = XFS_MKDIR_LOG_COUNT; + resp->tr_mkdir.tr_logflags |= XFS_TRANS_PERM_LOG_RES; + + resp->tr_ifree.tr_logres = xfs_calc_ifree_reservation(mp); + resp->tr_ifree.tr_logcount = XFS_INACTIVE_LOG_COUNT; + resp->tr_ifree.tr_logflags |= XFS_TRANS_PERM_LOG_RES; + + resp->tr_addafork.tr_logres = xfs_calc_addafork_reservation(mp); + resp->tr_addafork.tr_logcount = XFS_ADDAFORK_LOG_COUNT; + resp->tr_addafork.tr_logflags |= XFS_TRANS_PERM_LOG_RES; + + resp->tr_attrinval.tr_logres = xfs_calc_attrinval_reservation(mp); + resp->tr_attrinval.tr_logcount = XFS_ATTRINVAL_LOG_COUNT; + resp->tr_attrinval.tr_logflags |= XFS_TRANS_PERM_LOG_RES; + + resp->tr_attrsetm.tr_logres = xfs_calc_attrsetm_reservation(mp); + resp->tr_attrsetm.tr_logcount = XFS_ATTRSET_LOG_COUNT; + resp->tr_attrsetm.tr_logflags |= XFS_TRANS_PERM_LOG_RES; + + resp->tr_attrrm.tr_logres = xfs_calc_attrrm_reservation(mp); + resp->tr_attrrm.tr_logcount = XFS_ATTRRM_LOG_COUNT; + resp->tr_attrrm.tr_logflags |= XFS_TRANS_PERM_LOG_RES; + + resp->tr_growrtalloc.tr_logres = xfs_calc_growrtalloc_reservation(mp); + resp->tr_growrtalloc.tr_logcount = XFS_DEFAULT_PERM_LOG_COUNT; + resp->tr_growrtalloc.tr_logflags |= XFS_TRANS_PERM_LOG_RES; + + resp->tr_qm_dqalloc.tr_logres = xfs_calc_qm_dqalloc_reservation(mp); + resp->tr_qm_dqalloc.tr_logcount = XFS_WRITE_LOG_COUNT; + resp->tr_qm_dqalloc.tr_logflags |= XFS_TRANS_PERM_LOG_RES; + + /* + * The following transactions are logged in logical format with + * a default log count. + */ + resp->tr_qm_sbchange.tr_logres = xfs_calc_qm_sbchange_reservation(mp); + resp->tr_qm_sbchange.tr_logcount = XFS_DEFAULT_LOG_COUNT; + + resp->tr_qm_setqlim.tr_logres = xfs_calc_qm_setqlim_reservation(mp); + resp->tr_qm_setqlim.tr_logcount = XFS_DEFAULT_LOG_COUNT; + + resp->tr_qm_quotaoff.tr_logres = xfs_calc_qm_quotaoff_reservation(mp); + resp->tr_qm_quotaoff.tr_logcount = XFS_DEFAULT_LOG_COUNT; + + resp->tr_qm_equotaoff.tr_logres = + xfs_calc_qm_quotaoff_end_reservation(mp); + resp->tr_qm_equotaoff.tr_logcount = XFS_DEFAULT_LOG_COUNT; + + resp->tr_sb.tr_logres = xfs_calc_sb_reservation(mp); + resp->tr_sb.tr_logcount = XFS_DEFAULT_LOG_COUNT; + + /* The following transaction are logged in logical format */ + resp->tr_ichange.tr_logres = xfs_calc_ichange_reservation(mp); + resp->tr_growdata.tr_logres = xfs_calc_growdata_reservation(mp); + resp->tr_swrite.tr_logres = xfs_calc_swrite_reservation(mp); + resp->tr_fsyncts.tr_logres = xfs_calc_swrite_reservation(mp); + resp->tr_writeid.tr_logres = xfs_calc_writeid_reservation(mp); + resp->tr_attrsetrt.tr_logres = xfs_calc_attrsetrt_reservation(mp); + resp->tr_clearagi.tr_logres = xfs_calc_clear_agi_bucket_reservation(mp); + resp->tr_growrtzero.tr_logres = xfs_calc_growrtzero_reservation(mp); + resp->tr_growrtfree.tr_logres = xfs_calc_growrtfree_reservation(mp); +} diff --git a/fs/xfs/xfs_trans_resv.h b/fs/xfs/xfs_trans_resv.h new file mode 100644 index 0000000..de7de9a --- /dev/null +++ b/fs/xfs/xfs_trans_resv.h @@ -0,0 +1,116 @@ +/* + * Copyright (c) 2000-2002,2005 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#ifndef __XFS_TRANS_RESV_H__ +#define __XFS_TRANS_RESV_H__ + +struct xfs_mount; + +/* + * structure for maintaining pre-calculated transaction reservations. + */ +struct xfs_trans_res { + uint tr_logres; /* log space unit in bytes per log ticket */ + int tr_logcount; /* number of log operations per log ticket */ + int tr_logflags; /* log flags, currently only used for indicating + * a reservation request is permanent or not */ +}; + +struct xfs_trans_resv { + struct xfs_trans_res tr_write; /* extent alloc trans */ + struct xfs_trans_res tr_itruncate; /* truncate trans */ + struct xfs_trans_res tr_rename; /* rename trans */ + struct xfs_trans_res tr_link; /* link trans */ + struct xfs_trans_res tr_remove; /* unlink trans */ + struct xfs_trans_res tr_symlink; /* symlink trans */ + struct xfs_trans_res tr_create; /* create trans */ + struct xfs_trans_res tr_mkdir; /* mkdir trans */ + struct xfs_trans_res tr_ifree; /* inode free trans */ + struct xfs_trans_res tr_ichange; /* inode update trans */ + struct xfs_trans_res tr_growdata; /* fs data section grow trans */ + struct xfs_trans_res tr_swrite; /* sync write inode trans */ + struct xfs_trans_res tr_addafork; /* add inode attr fork trans */ + struct xfs_trans_res tr_writeid; /* write setuid/setgid file */ + struct xfs_trans_res tr_attrinval; /* attr fork buffer + * invalidation */ + struct xfs_trans_res tr_attrsetm; /* set/create an attribute at + * mount time */ + struct xfs_trans_res tr_attrsetrt; /* set/create an attribute at + * runtime */ + struct xfs_trans_res tr_attrrm; /* remove an attribute */ + struct xfs_trans_res tr_clearagi; /* clear agi unlinked bucket */ + struct xfs_trans_res tr_growrtalloc; /* grow realtime allocations */ + struct xfs_trans_res tr_growrtzero; /* grow realtime zeroing */ + struct xfs_trans_res tr_growrtfree; /* grow realtime freeing */ + struct xfs_trans_res tr_qm_sbchange; /* change quota flags */ + struct xfs_trans_res tr_qm_setqlim; /* adjust quota limits */ + struct xfs_trans_res tr_qm_dqalloc; /* allocate quota on disk */ + struct xfs_trans_res tr_qm_quotaoff; /* turn quota off */ + struct xfs_trans_res tr_qm_equotaoff;/* end of turn quota off */ + struct xfs_trans_res tr_sb; /* modify superblock */ + struct xfs_trans_res tr_fsyncts; /* update timestamps on fsync */ +}; + +/* shorthand way of accessing reservation structure */ +#define M_RES(mp) (&(mp)->m_resv) + +/* + * Per-extent log reservation for the allocation btree changes + * involved in freeing or allocating an extent. + * 2 trees * (2 blocks/level * max depth - 1) * block size + */ +#define XFS_ALLOCFREE_LOG_RES(mp,nx) \ + ((nx) * (2 * XFS_FSB_TO_B((mp), 2 * XFS_AG_MAXLEVELS(mp) - 1))) +#define XFS_ALLOCFREE_LOG_COUNT(mp,nx) \ + ((nx) * (2 * (2 * XFS_AG_MAXLEVELS(mp) - 1))) + +/* + * Per-directory log reservation for any directory change. + * dir blocks: (1 btree block per level + data block + free block) * dblock size + * bmap btree: (levels + 2) * max depth * block size + * v2 directory blocks can be fragmented below the dirblksize down to the fsb + * size, so account for that in the DAENTER macros. + */ +#define XFS_DIROP_LOG_RES(mp) \ + (XFS_FSB_TO_B(mp, XFS_DAENTER_BLOCKS(mp, XFS_DATA_FORK)) + \ + (XFS_FSB_TO_B(mp, XFS_DAENTER_BMAPS(mp, XFS_DATA_FORK) + 1))) +#define XFS_DIROP_LOG_COUNT(mp) \ + (XFS_DAENTER_BLOCKS(mp, XFS_DATA_FORK) + \ + XFS_DAENTER_BMAPS(mp, XFS_DATA_FORK) + 1) + +/* + * Various log count values. + */ +#define XFS_DEFAULT_LOG_COUNT 1 +#define XFS_DEFAULT_PERM_LOG_COUNT 2 +#define XFS_ITRUNCATE_LOG_COUNT 2 +#define XFS_INACTIVE_LOG_COUNT 2 +#define XFS_CREATE_LOG_COUNT 2 +#define XFS_MKDIR_LOG_COUNT 3 +#define XFS_SYMLINK_LOG_COUNT 3 +#define XFS_REMOVE_LOG_COUNT 2 +#define XFS_LINK_LOG_COUNT 2 +#define XFS_RENAME_LOG_COUNT 2 +#define XFS_WRITE_LOG_COUNT 2 +#define XFS_ADDAFORK_LOG_COUNT 2 +#define XFS_ATTRINVAL_LOG_COUNT 1 +#define XFS_ATTRSET_LOG_COUNT 3 +#define XFS_ATTRRM_LOG_COUNT 3 + +void xfs_trans_resv_calc(struct xfs_mount *mp, struct xfs_trans_resv *resp); + +#endif /* __XFS_TRANS_RESV_H__ */ diff --git a/fs/xfs/xfs_types.h b/fs/xfs/xfs_types.h index 61ba1cf..82bbc34 100644 --- a/fs/xfs/xfs_types.h +++ b/fs/xfs/xfs_types.h @@ -18,42 +18,7 @@ #ifndef __XFS_TYPES_H__ #define __XFS_TYPES_H__ -#ifdef __KERNEL__ - -/* - * Additional type declarations for XFS - */ -typedef signed char __int8_t; -typedef unsigned char __uint8_t; -typedef signed short int __int16_t; -typedef unsigned short int __uint16_t; -typedef signed int __int32_t; -typedef unsigned int __uint32_t; -typedef signed long long int __int64_t; -typedef unsigned long long int __uint64_t; - -typedef __uint32_t prid_t; /* project ID */ -typedef __uint32_t inst_t; /* an instruction */ - -typedef __s64 xfs_off_t; /* <file offset> type */ -typedef unsigned long long xfs_ino_t; /* <inode> type */ -typedef __s64 xfs_daddr_t; /* <disk address> type */ -typedef char * xfs_caddr_t; /* <core address> type */ -typedef __u32 xfs_dev_t; -typedef __u32 xfs_nlink_t; - -/* __psint_t is the same size as a pointer */ -#if (BITS_PER_LONG == 32) -typedef __int32_t __psint_t; -typedef __uint32_t __psunsigned_t; -#elif (BITS_PER_LONG == 64) -typedef __int64_t __psint_t; -typedef __uint64_t __psunsigned_t; -#else -#error BITS_PER_LONG must be 32 or 64 -#endif - -#endif /* __KERNEL__ */ +typedef __uint32_t prid_t; /* project ID */ typedef __uint32_t xfs_agblock_t; /* blockno in alloc. group */ typedef __uint32_t xfs_agino_t; /* inode # within allocation grp */ @@ -146,6 +111,12 @@ typedef __uint64_t xfs_filblks_t; /* number of blocks in a file */ #define XFS_MAX_SECTORSIZE (1 << XFS_MAX_SECTORSIZE_LOG) /* + * Inode fork identifiers. + */ +#define XFS_DATA_FORK 0 +#define XFS_ATTR_FORK 1 + +/* * Min numbers of data/attr fork btree root pointers. */ #define MINDBTPTRS 3 @@ -169,6 +140,23 @@ typedef enum { struct xfs_name { const unsigned char *name; int len; + int type; }; +/* + * uid_t and gid_t are hard-coded to 32 bits in the inode. + * Hence, an 'id' in a dquot is 32 bits.. + */ +typedef __uint32_t xfs_dqid_t; + +/* + * Constants for bit manipulations. + */ +#define XFS_NBBYLOG 3 /* log2(NBBY) */ +#define XFS_WORDLOG 2 /* log2(sizeof(xfs_rtword_t)) */ +#define XFS_NBWORDLOG (XFS_NBBYLOG + XFS_WORDLOG) +#define XFS_NBWORD (1 << XFS_NBWORDLOG) +#define XFS_WORDMASK ((1 << XFS_WORDLOG) - 1) + + #endif /* __XFS_TYPES_H__ */ diff --git a/fs/xfs/xfs_utils.c b/fs/xfs/xfs_utils.c deleted file mode 100644 index 0025c78..0000000 --- a/fs/xfs/xfs_utils.c +++ /dev/null @@ -1,314 +0,0 @@ -/* - * Copyright (c) 2000-2002,2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#include "xfs.h" -#include "xfs_fs.h" -#include "xfs_types.h" -#include "xfs_log.h" -#include "xfs_trans.h" -#include "xfs_sb.h" -#include "xfs_ag.h" -#include "xfs_dir2.h" -#include "xfs_mount.h" -#include "xfs_bmap_btree.h" -#include "xfs_dinode.h" -#include "xfs_inode.h" -#include "xfs_inode_item.h" -#include "xfs_bmap.h" -#include "xfs_error.h" -#include "xfs_quota.h" -#include "xfs_itable.h" -#include "xfs_utils.h" - - -/* - * Allocates a new inode from disk and return a pointer to the - * incore copy. This routine will internally commit the current - * transaction and allocate a new one if the Space Manager needed - * to do an allocation to replenish the inode free-list. - * - * This routine is designed to be called from xfs_create and - * xfs_create_dir. - * - */ -int -xfs_dir_ialloc( - xfs_trans_t **tpp, /* input: current transaction; - output: may be a new transaction. */ - xfs_inode_t *dp, /* directory within whose allocate - the inode. */ - umode_t mode, - xfs_nlink_t nlink, - xfs_dev_t rdev, - prid_t prid, /* project id */ - int okalloc, /* ok to allocate new space */ - xfs_inode_t **ipp, /* pointer to inode; it will be - locked. */ - int *committed) - -{ - xfs_trans_t *tp; - xfs_trans_t *ntp; - xfs_inode_t *ip; - xfs_buf_t *ialloc_context = NULL; - int code; - uint log_res; - uint log_count; - void *dqinfo; - uint tflags; - - tp = *tpp; - ASSERT(tp->t_flags & XFS_TRANS_PERM_LOG_RES); - - /* - * xfs_ialloc will return a pointer to an incore inode if - * the Space Manager has an available inode on the free - * list. Otherwise, it will do an allocation and replenish - * the freelist. Since we can only do one allocation per - * transaction without deadlocks, we will need to commit the - * current transaction and start a new one. We will then - * need to call xfs_ialloc again to get the inode. - * - * If xfs_ialloc did an allocation to replenish the freelist, - * it returns the bp containing the head of the freelist as - * ialloc_context. We will hold a lock on it across the - * transaction commit so that no other process can steal - * the inode(s) that we've just allocated. - */ - code = xfs_ialloc(tp, dp, mode, nlink, rdev, prid, okalloc, - &ialloc_context, &ip); - - /* - * Return an error if we were unable to allocate a new inode. - * This should only happen if we run out of space on disk or - * encounter a disk error. - */ - if (code) { - *ipp = NULL; - return code; - } - if (!ialloc_context && !ip) { - *ipp = NULL; - return XFS_ERROR(ENOSPC); - } - - /* - * If the AGI buffer is non-NULL, then we were unable to get an - * inode in one operation. We need to commit the current - * transaction and call xfs_ialloc() again. It is guaranteed - * to succeed the second time. - */ - if (ialloc_context) { - /* - * Normally, xfs_trans_commit releases all the locks. - * We call bhold to hang on to the ialloc_context across - * the commit. Holding this buffer prevents any other - * processes from doing any allocations in this - * allocation group. - */ - xfs_trans_bhold(tp, ialloc_context); - /* - * Save the log reservation so we can use - * them in the next transaction. - */ - log_res = xfs_trans_get_log_res(tp); - log_count = xfs_trans_get_log_count(tp); - - /* - * We want the quota changes to be associated with the next - * transaction, NOT this one. So, detach the dqinfo from this - * and attach it to the next transaction. - */ - dqinfo = NULL; - tflags = 0; - if (tp->t_dqinfo) { - dqinfo = (void *)tp->t_dqinfo; - tp->t_dqinfo = NULL; - tflags = tp->t_flags & XFS_TRANS_DQ_DIRTY; - tp->t_flags &= ~(XFS_TRANS_DQ_DIRTY); - } - - ntp = xfs_trans_dup(tp); - code = xfs_trans_commit(tp, 0); - tp = ntp; - if (committed != NULL) { - *committed = 1; - } - /* - * If we get an error during the commit processing, - * release the buffer that is still held and return - * to the caller. - */ - if (code) { - xfs_buf_relse(ialloc_context); - if (dqinfo) { - tp->t_dqinfo = dqinfo; - xfs_trans_free_dqinfo(tp); - } - *tpp = ntp; - *ipp = NULL; - return code; - } - - /* - * transaction commit worked ok so we can drop the extra ticket - * reference that we gained in xfs_trans_dup() - */ - xfs_log_ticket_put(tp->t_ticket); - code = xfs_trans_reserve(tp, 0, log_res, 0, - XFS_TRANS_PERM_LOG_RES, log_count); - /* - * Re-attach the quota info that we detached from prev trx. - */ - if (dqinfo) { - tp->t_dqinfo = dqinfo; - tp->t_flags |= tflags; - } - - if (code) { - xfs_buf_relse(ialloc_context); - *tpp = ntp; - *ipp = NULL; - return code; - } - xfs_trans_bjoin(tp, ialloc_context); - - /* - * Call ialloc again. Since we've locked out all - * other allocations in this allocation group, - * this call should always succeed. - */ - code = xfs_ialloc(tp, dp, mode, nlink, rdev, prid, - okalloc, &ialloc_context, &ip); - - /* - * If we get an error at this point, return to the caller - * so that the current transaction can be aborted. - */ - if (code) { - *tpp = tp; - *ipp = NULL; - return code; - } - ASSERT(!ialloc_context && ip); - - } else { - if (committed != NULL) - *committed = 0; - } - - *ipp = ip; - *tpp = tp; - - return 0; -} - -/* - * Decrement the link count on an inode & log the change. - * If this causes the link count to go to zero, initiate the - * logging activity required to truncate a file. - */ -int /* error */ -xfs_droplink( - xfs_trans_t *tp, - xfs_inode_t *ip) -{ - int error; - - xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG); - - ASSERT (ip->i_d.di_nlink > 0); - ip->i_d.di_nlink--; - drop_nlink(VFS_I(ip)); - xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); - - error = 0; - if (ip->i_d.di_nlink == 0) { - /* - * We're dropping the last link to this file. - * Move the on-disk inode to the AGI unlinked list. - * From xfs_inactive() we will pull the inode from - * the list and free it. - */ - error = xfs_iunlink(tp, ip); - } - return error; -} - -/* - * This gets called when the inode's version needs to be changed from 1 to 2. - * Currently this happens when the nlink field overflows the old 16-bit value - * or when chproj is called to change the project for the first time. - * As a side effect the superblock version will also get rev'd - * to contain the NLINK bit. - */ -void -xfs_bump_ino_vers2( - xfs_trans_t *tp, - xfs_inode_t *ip) -{ - xfs_mount_t *mp; - - ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); - ASSERT(ip->i_d.di_version == 1); - - ip->i_d.di_version = 2; - ip->i_d.di_onlink = 0; - memset(&(ip->i_d.di_pad[0]), 0, sizeof(ip->i_d.di_pad)); - mp = tp->t_mountp; - if (!xfs_sb_version_hasnlink(&mp->m_sb)) { - spin_lock(&mp->m_sb_lock); - if (!xfs_sb_version_hasnlink(&mp->m_sb)) { - xfs_sb_version_addnlink(&mp->m_sb); - spin_unlock(&mp->m_sb_lock); - xfs_mod_sb(tp, XFS_SB_VERSIONNUM); - } else { - spin_unlock(&mp->m_sb_lock); - } - } - /* Caller must log the inode */ -} - -/* - * Increment the link count on an inode & log the change. - */ -int -xfs_bumplink( - xfs_trans_t *tp, - xfs_inode_t *ip) -{ - xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG); - - ASSERT(ip->i_d.di_nlink > 0); - ip->i_d.di_nlink++; - inc_nlink(VFS_I(ip)); - if ((ip->i_d.di_version == 1) && - (ip->i_d.di_nlink > XFS_MAXLINK_1)) { - /* - * The inode has increased its number of links beyond - * what can fit in an old format inode. It now needs - * to be converted to a version 2 inode with a 32 bit - * link count. If this is the first inode in the file - * system to do this, then we need to bump the superblock - * version number as well. - */ - xfs_bump_ino_vers2(tp, ip); - } - - xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); - return 0; -} diff --git a/fs/xfs/xfs_utils.h b/fs/xfs/xfs_utils.h deleted file mode 100644 index 5eeab46..0000000 --- a/fs/xfs/xfs_utils.h +++ /dev/null @@ -1,27 +0,0 @@ -/* - * Copyright (c) 2000-2002,2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#ifndef __XFS_UTILS_H__ -#define __XFS_UTILS_H__ - -extern int xfs_dir_ialloc(xfs_trans_t **, xfs_inode_t *, umode_t, xfs_nlink_t, - xfs_dev_t, prid_t, int, xfs_inode_t **, int *); -extern int xfs_droplink(xfs_trans_t *, xfs_inode_t *); -extern int xfs_bumplink(xfs_trans_t *, xfs_inode_t *); -extern void xfs_bump_ino_vers2(xfs_trans_t *, xfs_inode_t *); - -#endif /* __XFS_UTILS_H__ */ diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c deleted file mode 100644 index dc730ac..0000000 --- a/fs/xfs/xfs_vnodeops.c +++ /dev/null @@ -1,1870 +0,0 @@ -/* - * Copyright (c) 2000-2006 Silicon Graphics, Inc. - * Copyright (c) 2012 Red Hat, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#include "xfs.h" -#include "xfs_fs.h" -#include "xfs_types.h" -#include "xfs_bit.h" -#include "xfs_log.h" -#include "xfs_trans.h" -#include "xfs_sb.h" -#include "xfs_ag.h" -#include "xfs_dir2.h" -#include "xfs_mount.h" -#include "xfs_da_btree.h" -#include "xfs_bmap_btree.h" -#include "xfs_ialloc_btree.h" -#include "xfs_dinode.h" -#include "xfs_inode.h" -#include "xfs_inode_item.h" -#include "xfs_itable.h" -#include "xfs_ialloc.h" -#include "xfs_alloc.h" -#include "xfs_bmap.h" -#include "xfs_acl.h" -#include "xfs_attr.h" -#include "xfs_error.h" -#include "xfs_quota.h" -#include "xfs_utils.h" -#include "xfs_rtalloc.h" -#include "xfs_trans_space.h" -#include "xfs_log_priv.h" -#include "xfs_filestream.h" -#include "xfs_vnodeops.h" -#include "xfs_trace.h" -#include "xfs_icache.h" -#include "xfs_symlink.h" - - -/* - * This is called by xfs_inactive to free any blocks beyond eof - * when the link count isn't zero and by xfs_dm_punch_hole() when - * punching a hole to EOF. - */ -int -xfs_free_eofblocks( - xfs_mount_t *mp, - xfs_inode_t *ip, - bool need_iolock) -{ - xfs_trans_t *tp; - int error; - xfs_fileoff_t end_fsb; - xfs_fileoff_t last_fsb; - xfs_filblks_t map_len; - int nimaps; - xfs_bmbt_irec_t imap; - - /* - * Figure out if there are any blocks beyond the end - * of the file. If not, then there is nothing to do. - */ - end_fsb = XFS_B_TO_FSB(mp, (xfs_ufsize_t)XFS_ISIZE(ip)); - last_fsb = XFS_B_TO_FSB(mp, mp->m_super->s_maxbytes); - if (last_fsb <= end_fsb) - return 0; - map_len = last_fsb - end_fsb; - - nimaps = 1; - xfs_ilock(ip, XFS_ILOCK_SHARED); - error = xfs_bmapi_read(ip, end_fsb, map_len, &imap, &nimaps, 0); - xfs_iunlock(ip, XFS_ILOCK_SHARED); - - if (!error && (nimaps != 0) && - (imap.br_startblock != HOLESTARTBLOCK || - ip->i_delayed_blks)) { - /* - * Attach the dquots to the inode up front. - */ - error = xfs_qm_dqattach(ip, 0); - if (error) - return error; - - /* - * There are blocks after the end of file. - * Free them up now by truncating the file to - * its current size. - */ - tp = xfs_trans_alloc(mp, XFS_TRANS_INACTIVE); - - if (need_iolock) { - if (!xfs_ilock_nowait(ip, XFS_IOLOCK_EXCL)) { - xfs_trans_cancel(tp, 0); - return EAGAIN; - } - } - - error = xfs_trans_reserve(tp, 0, - XFS_ITRUNCATE_LOG_RES(mp), - 0, XFS_TRANS_PERM_LOG_RES, - XFS_ITRUNCATE_LOG_COUNT); - if (error) { - ASSERT(XFS_FORCED_SHUTDOWN(mp)); - xfs_trans_cancel(tp, 0); - if (need_iolock) - xfs_iunlock(ip, XFS_IOLOCK_EXCL); - return error; - } - - xfs_ilock(ip, XFS_ILOCK_EXCL); - xfs_trans_ijoin(tp, ip, 0); - - /* - * Do not update the on-disk file size. If we update the - * on-disk file size and then the system crashes before the - * contents of the file are flushed to disk then the files - * may be full of holes (ie NULL files bug). - */ - error = xfs_itruncate_extents(&tp, ip, XFS_DATA_FORK, - XFS_ISIZE(ip)); - if (error) { - /* - * If we get an error at this point we simply don't - * bother truncating the file. - */ - xfs_trans_cancel(tp, - (XFS_TRANS_RELEASE_LOG_RES | - XFS_TRANS_ABORT)); - } else { - error = xfs_trans_commit(tp, - XFS_TRANS_RELEASE_LOG_RES); - if (!error) - xfs_inode_clear_eofblocks_tag(ip); - } - - xfs_iunlock(ip, XFS_ILOCK_EXCL); - if (need_iolock) - xfs_iunlock(ip, XFS_IOLOCK_EXCL); - } - return error; -} - -int -xfs_release( - xfs_inode_t *ip) -{ - xfs_mount_t *mp = ip->i_mount; - int error; - - if (!S_ISREG(ip->i_d.di_mode) || (ip->i_d.di_mode == 0)) - return 0; - - /* If this is a read-only mount, don't do this (would generate I/O) */ - if (mp->m_flags & XFS_MOUNT_RDONLY) - return 0; - - if (!XFS_FORCED_SHUTDOWN(mp)) { - int truncated; - - /* - * If we are using filestreams, and we have an unlinked - * file that we are processing the last close on, then nothing - * will be able to reopen and write to this file. Purge this - * inode from the filestreams cache so that it doesn't delay - * teardown of the inode. - */ - if ((ip->i_d.di_nlink == 0) && xfs_inode_is_filestream(ip)) - xfs_filestream_deassociate(ip); - - /* - * If we previously truncated this file and removed old data - * in the process, we want to initiate "early" writeout on - * the last close. This is an attempt to combat the notorious - * NULL files problem which is particularly noticeable from a - * truncate down, buffered (re-)write (delalloc), followed by - * a crash. What we are effectively doing here is - * significantly reducing the time window where we'd otherwise - * be exposed to that problem. - */ - truncated = xfs_iflags_test_and_clear(ip, XFS_ITRUNCATED); - if (truncated) { - xfs_iflags_clear(ip, XFS_IDIRTY_RELEASE); - if (VN_DIRTY(VFS_I(ip)) && ip->i_delayed_blks > 0) { - error = -filemap_flush(VFS_I(ip)->i_mapping); - if (error) - return error; - } - } - } - - if (ip->i_d.di_nlink == 0) - return 0; - - if (xfs_can_free_eofblocks(ip, false)) { - - /* - * If we can't get the iolock just skip truncating the blocks - * past EOF because we could deadlock with the mmap_sem - * otherwise. We'll get another chance to drop them once the - * last reference to the inode is dropped, so we'll never leak - * blocks permanently. - * - * Further, check if the inode is being opened, written and - * closed frequently and we have delayed allocation blocks - * outstanding (e.g. streaming writes from the NFS server), - * truncating the blocks past EOF will cause fragmentation to - * occur. - * - * In this case don't do the truncation, either, but we have to - * be careful how we detect this case. Blocks beyond EOF show - * up as i_delayed_blks even when the inode is clean, so we - * need to truncate them away first before checking for a dirty - * release. Hence on the first dirty close we will still remove - * the speculative allocation, but after that we will leave it - * in place. - */ - if (xfs_iflags_test(ip, XFS_IDIRTY_RELEASE)) - return 0; - - error = xfs_free_eofblocks(mp, ip, true); - if (error && error != EAGAIN) - return error; - - /* delalloc blocks after truncation means it really is dirty */ - if (ip->i_delayed_blks) - xfs_iflags_set(ip, XFS_IDIRTY_RELEASE); - } - return 0; -} - -/* - * xfs_inactive - * - * This is called when the vnode reference count for the vnode - * goes to zero. If the file has been unlinked, then it must - * now be truncated. Also, we clear all of the read-ahead state - * kept for the inode here since the file is now closed. - */ -int -xfs_inactive( - xfs_inode_t *ip) -{ - xfs_bmap_free_t free_list; - xfs_fsblock_t first_block; - int committed; - xfs_trans_t *tp; - xfs_mount_t *mp; - int error; - int truncate = 0; - - /* - * If the inode is already free, then there can be nothing - * to clean up here. - */ - if (ip->i_d.di_mode == 0 || is_bad_inode(VFS_I(ip))) { - ASSERT(ip->i_df.if_real_bytes == 0); - ASSERT(ip->i_df.if_broot_bytes == 0); - return VN_INACTIVE_CACHE; - } - - mp = ip->i_mount; - - error = 0; - - /* If this is a read-only mount, don't do this (would generate I/O) */ - if (mp->m_flags & XFS_MOUNT_RDONLY) - goto out; - - if (ip->i_d.di_nlink != 0) { - /* - * force is true because we are evicting an inode from the - * cache. Post-eof blocks must be freed, lest we end up with - * broken free space accounting. - */ - if (xfs_can_free_eofblocks(ip, true)) { - error = xfs_free_eofblocks(mp, ip, false); - if (error) - return VN_INACTIVE_CACHE; - } - goto out; - } - - if (S_ISREG(ip->i_d.di_mode) && - (ip->i_d.di_size != 0 || XFS_ISIZE(ip) != 0 || - ip->i_d.di_nextents > 0 || ip->i_delayed_blks > 0)) - truncate = 1; - - error = xfs_qm_dqattach(ip, 0); - if (error) - return VN_INACTIVE_CACHE; - - tp = xfs_trans_alloc(mp, XFS_TRANS_INACTIVE); - error = xfs_trans_reserve(tp, 0, - (truncate || S_ISLNK(ip->i_d.di_mode)) ? - XFS_ITRUNCATE_LOG_RES(mp) : - XFS_IFREE_LOG_RES(mp), - 0, - XFS_TRANS_PERM_LOG_RES, - XFS_ITRUNCATE_LOG_COUNT); - if (error) { - ASSERT(XFS_FORCED_SHUTDOWN(mp)); - xfs_trans_cancel(tp, 0); - return VN_INACTIVE_CACHE; - } - - xfs_ilock(ip, XFS_ILOCK_EXCL); - xfs_trans_ijoin(tp, ip, 0); - - if (S_ISLNK(ip->i_d.di_mode)) { - error = xfs_inactive_symlink(ip, &tp); - if (error) - goto out_cancel; - } else if (truncate) { - ip->i_d.di_size = 0; - xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); - - error = xfs_itruncate_extents(&tp, ip, XFS_DATA_FORK, 0); - if (error) - goto out_cancel; - - ASSERT(ip->i_d.di_nextents == 0); - } - - /* - * If there are attributes associated with the file then blow them away - * now. The code calls a routine that recursively deconstructs the - * attribute fork. We need to just commit the current transaction - * because we can't use it for xfs_attr_inactive(). - */ - if (ip->i_d.di_anextents > 0) { - ASSERT(ip->i_d.di_forkoff != 0); - - error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES); - if (error) - goto out_unlock; - - xfs_iunlock(ip, XFS_ILOCK_EXCL); - - error = xfs_attr_inactive(ip); - if (error) - goto out; - - tp = xfs_trans_alloc(mp, XFS_TRANS_INACTIVE); - error = xfs_trans_reserve(tp, 0, - XFS_IFREE_LOG_RES(mp), - 0, XFS_TRANS_PERM_LOG_RES, - XFS_INACTIVE_LOG_COUNT); - if (error) { - xfs_trans_cancel(tp, 0); - goto out; - } - - xfs_ilock(ip, XFS_ILOCK_EXCL); - xfs_trans_ijoin(tp, ip, 0); - } - - if (ip->i_afp) - xfs_idestroy_fork(ip, XFS_ATTR_FORK); - - ASSERT(ip->i_d.di_anextents == 0); - - /* - * Free the inode. - */ - xfs_bmap_init(&free_list, &first_block); - error = xfs_ifree(tp, ip, &free_list); - if (error) { - /* - * If we fail to free the inode, shut down. The cancel - * might do that, we need to make sure. Otherwise the - * inode might be lost for a long time or forever. - */ - if (!XFS_FORCED_SHUTDOWN(mp)) { - xfs_notice(mp, "%s: xfs_ifree returned error %d", - __func__, error); - xfs_force_shutdown(mp, SHUTDOWN_META_IO_ERROR); - } - xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES|XFS_TRANS_ABORT); - } else { - /* - * Credit the quota account(s). The inode is gone. - */ - xfs_trans_mod_dquot_byino(tp, ip, XFS_TRANS_DQ_ICOUNT, -1); - - /* - * Just ignore errors at this point. There is nothing we can - * do except to try to keep going. Make sure it's not a silent - * error. - */ - error = xfs_bmap_finish(&tp, &free_list, &committed); - if (error) - xfs_notice(mp, "%s: xfs_bmap_finish returned error %d", - __func__, error); - error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES); - if (error) - xfs_notice(mp, "%s: xfs_trans_commit returned error %d", - __func__, error); - } - - /* - * Release the dquots held by inode, if any. - */ - xfs_qm_dqdetach(ip); -out_unlock: - xfs_iunlock(ip, XFS_ILOCK_EXCL); -out: - return VN_INACTIVE_CACHE; -out_cancel: - xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES | XFS_TRANS_ABORT); - goto out_unlock; -} - -/* - * Lookups up an inode from "name". If ci_name is not NULL, then a CI match - * is allowed, otherwise it has to be an exact match. If a CI match is found, - * ci_name->name will point to a the actual name (caller must free) or - * will be set to NULL if an exact match is found. - */ -int -xfs_lookup( - xfs_inode_t *dp, - struct xfs_name *name, - xfs_inode_t **ipp, - struct xfs_name *ci_name) -{ - xfs_ino_t inum; - int error; - uint lock_mode; - - trace_xfs_lookup(dp, name); - - if (XFS_FORCED_SHUTDOWN(dp->i_mount)) - return XFS_ERROR(EIO); - - lock_mode = xfs_ilock_map_shared(dp); - error = xfs_dir_lookup(NULL, dp, name, &inum, ci_name); - xfs_iunlock_map_shared(dp, lock_mode); - - if (error) - goto out; - - error = xfs_iget(dp->i_mount, NULL, inum, 0, 0, ipp); - if (error) - goto out_free_name; - - return 0; - -out_free_name: - if (ci_name) - kmem_free(ci_name->name); -out: - *ipp = NULL; - return error; -} - -int -xfs_create( - xfs_inode_t *dp, - struct xfs_name *name, - umode_t mode, - xfs_dev_t rdev, - xfs_inode_t **ipp) -{ - int is_dir = S_ISDIR(mode); - struct xfs_mount *mp = dp->i_mount; - struct xfs_inode *ip = NULL; - struct xfs_trans *tp = NULL; - int error; - xfs_bmap_free_t free_list; - xfs_fsblock_t first_block; - bool unlock_dp_on_error = false; - uint cancel_flags; - int committed; - prid_t prid; - struct xfs_dquot *udqp = NULL; - struct xfs_dquot *gdqp = NULL; - struct xfs_dquot *pdqp = NULL; - uint resblks; - uint log_res; - uint log_count; - - trace_xfs_create(dp, name); - - if (XFS_FORCED_SHUTDOWN(mp)) - return XFS_ERROR(EIO); - - if (dp->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) - prid = xfs_get_projid(dp); - else - prid = XFS_PROJID_DEFAULT; - - /* - * Make sure that we have allocated dquot(s) on disk. - */ - error = xfs_qm_vop_dqalloc(dp, current_fsuid(), current_fsgid(), prid, - XFS_QMOPT_QUOTALL | XFS_QMOPT_INHERIT, - &udqp, &gdqp, &pdqp); - if (error) - return error; - - if (is_dir) { - rdev = 0; - resblks = XFS_MKDIR_SPACE_RES(mp, name->len); - log_res = XFS_MKDIR_LOG_RES(mp); - log_count = XFS_MKDIR_LOG_COUNT; - tp = xfs_trans_alloc(mp, XFS_TRANS_MKDIR); - } else { - resblks = XFS_CREATE_SPACE_RES(mp, name->len); - log_res = XFS_CREATE_LOG_RES(mp); - log_count = XFS_CREATE_LOG_COUNT; - tp = xfs_trans_alloc(mp, XFS_TRANS_CREATE); - } - - cancel_flags = XFS_TRANS_RELEASE_LOG_RES; - - /* - * Initially assume that the file does not exist and - * reserve the resources for that case. If that is not - * the case we'll drop the one we have and get a more - * appropriate transaction later. - */ - error = xfs_trans_reserve(tp, resblks, log_res, 0, - XFS_TRANS_PERM_LOG_RES, log_count); - if (error == ENOSPC) { - /* flush outstanding delalloc blocks and retry */ - xfs_flush_inodes(mp); - error = xfs_trans_reserve(tp, resblks, log_res, 0, - XFS_TRANS_PERM_LOG_RES, log_count); - } - if (error == ENOSPC) { - /* No space at all so try a "no-allocation" reservation */ - resblks = 0; - error = xfs_trans_reserve(tp, 0, log_res, 0, - XFS_TRANS_PERM_LOG_RES, log_count); - } - if (error) { - cancel_flags = 0; - goto out_trans_cancel; - } - - xfs_ilock(dp, XFS_ILOCK_EXCL | XFS_ILOCK_PARENT); - unlock_dp_on_error = true; - - xfs_bmap_init(&free_list, &first_block); - - /* - * Reserve disk quota and the inode. - */ - error = xfs_trans_reserve_quota(tp, mp, udqp, gdqp, - pdqp, resblks, 1, 0); - if (error) - goto out_trans_cancel; - - error = xfs_dir_canenter(tp, dp, name, resblks); - if (error) - goto out_trans_cancel; - - /* - * A newly created regular or special file just has one directory - * entry pointing to them, but a directory also the "." entry - * pointing to itself. - */ - error = xfs_dir_ialloc(&tp, dp, mode, is_dir ? 2 : 1, rdev, - prid, resblks > 0, &ip, &committed); - if (error) { - if (error == ENOSPC) - goto out_trans_cancel; - goto out_trans_abort; - } - - /* - * Now we join the directory inode to the transaction. We do not do it - * earlier because xfs_dir_ialloc might commit the previous transaction - * (and release all the locks). An error from here on will result in - * the transaction cancel unlocking dp so don't do it explicitly in the - * error path. - */ - xfs_trans_ijoin(tp, dp, XFS_ILOCK_EXCL); - unlock_dp_on_error = false; - - error = xfs_dir_createname(tp, dp, name, ip->i_ino, - &first_block, &free_list, resblks ? - resblks - XFS_IALLOC_SPACE_RES(mp) : 0); - if (error) { - ASSERT(error != ENOSPC); - goto out_trans_abort; - } - xfs_trans_ichgtime(tp, dp, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG); - xfs_trans_log_inode(tp, dp, XFS_ILOG_CORE); - - if (is_dir) { - error = xfs_dir_init(tp, ip, dp); - if (error) - goto out_bmap_cancel; - - error = xfs_bumplink(tp, dp); - if (error) - goto out_bmap_cancel; - } - - /* - * If this is a synchronous mount, make sure that the - * create transaction goes to disk before returning to - * the user. - */ - if (mp->m_flags & (XFS_MOUNT_WSYNC|XFS_MOUNT_DIRSYNC)) - xfs_trans_set_sync(tp); - - /* - * Attach the dquot(s) to the inodes and modify them incore. - * These ids of the inode couldn't have changed since the new - * inode has been locked ever since it was created. - */ - xfs_qm_vop_create_dqattach(tp, ip, udqp, gdqp, pdqp); - - error = xfs_bmap_finish(&tp, &free_list, &committed); - if (error) - goto out_bmap_cancel; - - error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES); - if (error) - goto out_release_inode; - - xfs_qm_dqrele(udqp); - xfs_qm_dqrele(gdqp); - xfs_qm_dqrele(pdqp); - - *ipp = ip; - return 0; - - out_bmap_cancel: - xfs_bmap_cancel(&free_list); - out_trans_abort: - cancel_flags |= XFS_TRANS_ABORT; - out_trans_cancel: - xfs_trans_cancel(tp, cancel_flags); - out_release_inode: - /* - * Wait until after the current transaction is aborted to - * release the inode. This prevents recursive transactions - * and deadlocks from xfs_inactive. - */ - if (ip) - IRELE(ip); - - xfs_qm_dqrele(udqp); - xfs_qm_dqrele(gdqp); - xfs_qm_dqrele(pdqp); - - if (unlock_dp_on_error) - xfs_iunlock(dp, XFS_ILOCK_EXCL); - return error; -} - -#ifdef DEBUG -int xfs_locked_n; -int xfs_small_retries; -int xfs_middle_retries; -int xfs_lots_retries; -int xfs_lock_delays; -#endif - -/* - * Bump the subclass so xfs_lock_inodes() acquires each lock with - * a different value - */ -static inline int -xfs_lock_inumorder(int lock_mode, int subclass) -{ - if (lock_mode & (XFS_IOLOCK_SHARED|XFS_IOLOCK_EXCL)) - lock_mode |= (subclass + XFS_LOCK_INUMORDER) << XFS_IOLOCK_SHIFT; - if (lock_mode & (XFS_ILOCK_SHARED|XFS_ILOCK_EXCL)) - lock_mode |= (subclass + XFS_LOCK_INUMORDER) << XFS_ILOCK_SHIFT; - - return lock_mode; -} - -/* - * The following routine will lock n inodes in exclusive mode. - * We assume the caller calls us with the inodes in i_ino order. - * - * We need to detect deadlock where an inode that we lock - * is in the AIL and we start waiting for another inode that is locked - * by a thread in a long running transaction (such as truncate). This can - * result in deadlock since the long running trans might need to wait - * for the inode we just locked in order to push the tail and free space - * in the log. - */ -void -xfs_lock_inodes( - xfs_inode_t **ips, - int inodes, - uint lock_mode) -{ - int attempts = 0, i, j, try_lock; - xfs_log_item_t *lp; - - ASSERT(ips && (inodes >= 2)); /* we need at least two */ - - try_lock = 0; - i = 0; - -again: - for (; i < inodes; i++) { - ASSERT(ips[i]); - - if (i && (ips[i] == ips[i-1])) /* Already locked */ - continue; - - /* - * If try_lock is not set yet, make sure all locked inodes - * are not in the AIL. - * If any are, set try_lock to be used later. - */ - - if (!try_lock) { - for (j = (i - 1); j >= 0 && !try_lock; j--) { - lp = (xfs_log_item_t *)ips[j]->i_itemp; - if (lp && (lp->li_flags & XFS_LI_IN_AIL)) { - try_lock++; - } - } - } - - /* - * If any of the previous locks we have locked is in the AIL, - * we must TRY to get the second and subsequent locks. If - * we can't get any, we must release all we have - * and try again. - */ - - if (try_lock) { - /* try_lock must be 0 if i is 0. */ - /* - * try_lock means we have an inode locked - * that is in the AIL. - */ - ASSERT(i != 0); - if (!xfs_ilock_nowait(ips[i], xfs_lock_inumorder(lock_mode, i))) { - attempts++; - - /* - * Unlock all previous guys and try again. - * xfs_iunlock will try to push the tail - * if the inode is in the AIL. - */ - - for(j = i - 1; j >= 0; j--) { - - /* - * Check to see if we've already - * unlocked this one. - * Not the first one going back, - * and the inode ptr is the same. - */ - if ((j != (i - 1)) && ips[j] == - ips[j+1]) - continue; - - xfs_iunlock(ips[j], lock_mode); - } - - if ((attempts % 5) == 0) { - delay(1); /* Don't just spin the CPU */ -#ifdef DEBUG - xfs_lock_delays++; -#endif - } - i = 0; - try_lock = 0; - goto again; - } - } else { - xfs_ilock(ips[i], xfs_lock_inumorder(lock_mode, i)); - } - } - -#ifdef DEBUG - if (attempts) { - if (attempts < 5) xfs_small_retries++; - else if (attempts < 100) xfs_middle_retries++; - else xfs_lots_retries++; - } else { - xfs_locked_n++; - } -#endif -} - -/* - * xfs_lock_two_inodes() can only be used to lock one type of lock - * at a time - the iolock or the ilock, but not both at once. If - * we lock both at once, lockdep will report false positives saying - * we have violated locking orders. - */ -void -xfs_lock_two_inodes( - xfs_inode_t *ip0, - xfs_inode_t *ip1, - uint lock_mode) -{ - xfs_inode_t *temp; - int attempts = 0; - xfs_log_item_t *lp; - - if (lock_mode & (XFS_IOLOCK_SHARED|XFS_IOLOCK_EXCL)) - ASSERT((lock_mode & (XFS_ILOCK_SHARED|XFS_ILOCK_EXCL)) == 0); - ASSERT(ip0->i_ino != ip1->i_ino); - - if (ip0->i_ino > ip1->i_ino) { - temp = ip0; - ip0 = ip1; - ip1 = temp; - } - - again: - xfs_ilock(ip0, xfs_lock_inumorder(lock_mode, 0)); - - /* - * If the first lock we have locked is in the AIL, we must TRY to get - * the second lock. If we can't get it, we must release the first one - * and try again. - */ - lp = (xfs_log_item_t *)ip0->i_itemp; - if (lp && (lp->li_flags & XFS_LI_IN_AIL)) { - if (!xfs_ilock_nowait(ip1, xfs_lock_inumorder(lock_mode, 1))) { - xfs_iunlock(ip0, lock_mode); - if ((++attempts % 5) == 0) - delay(1); /* Don't just spin the CPU */ - goto again; - } - } else { - xfs_ilock(ip1, xfs_lock_inumorder(lock_mode, 1)); - } -} - -int -xfs_remove( - xfs_inode_t *dp, - struct xfs_name *name, - xfs_inode_t *ip) -{ - xfs_mount_t *mp = dp->i_mount; - xfs_trans_t *tp = NULL; - int is_dir = S_ISDIR(ip->i_d.di_mode); - int error = 0; - xfs_bmap_free_t free_list; - xfs_fsblock_t first_block; - int cancel_flags; - int committed; - int link_zero; - uint resblks; - uint log_count; - - trace_xfs_remove(dp, name); - - if (XFS_FORCED_SHUTDOWN(mp)) - return XFS_ERROR(EIO); - - error = xfs_qm_dqattach(dp, 0); - if (error) - goto std_return; - - error = xfs_qm_dqattach(ip, 0); - if (error) - goto std_return; - - if (is_dir) { - tp = xfs_trans_alloc(mp, XFS_TRANS_RMDIR); - log_count = XFS_DEFAULT_LOG_COUNT; - } else { - tp = xfs_trans_alloc(mp, XFS_TRANS_REMOVE); - log_count = XFS_REMOVE_LOG_COUNT; - } - cancel_flags = XFS_TRANS_RELEASE_LOG_RES; - - /* - * We try to get the real space reservation first, - * allowing for directory btree deletion(s) implying - * possible bmap insert(s). If we can't get the space - * reservation then we use 0 instead, and avoid the bmap - * btree insert(s) in the directory code by, if the bmap - * insert tries to happen, instead trimming the LAST - * block from the directory. - */ - resblks = XFS_REMOVE_SPACE_RES(mp); - error = xfs_trans_reserve(tp, resblks, XFS_REMOVE_LOG_RES(mp), 0, - XFS_TRANS_PERM_LOG_RES, log_count); - if (error == ENOSPC) { - resblks = 0; - error = xfs_trans_reserve(tp, 0, XFS_REMOVE_LOG_RES(mp), 0, - XFS_TRANS_PERM_LOG_RES, log_count); - } - if (error) { - ASSERT(error != ENOSPC); - cancel_flags = 0; - goto out_trans_cancel; - } - - xfs_lock_two_inodes(dp, ip, XFS_ILOCK_EXCL); - - xfs_trans_ijoin(tp, dp, XFS_ILOCK_EXCL); - xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); - - /* - * If we're removing a directory perform some additional validation. - */ - if (is_dir) { - ASSERT(ip->i_d.di_nlink >= 2); - if (ip->i_d.di_nlink != 2) { - error = XFS_ERROR(ENOTEMPTY); - goto out_trans_cancel; - } - if (!xfs_dir_isempty(ip)) { - error = XFS_ERROR(ENOTEMPTY); - goto out_trans_cancel; - } - } - - xfs_bmap_init(&free_list, &first_block); - error = xfs_dir_removename(tp, dp, name, ip->i_ino, - &first_block, &free_list, resblks); - if (error) { - ASSERT(error != ENOENT); - goto out_bmap_cancel; - } - xfs_trans_ichgtime(tp, dp, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG); - - if (is_dir) { - /* - * Drop the link from ip's "..". - */ - error = xfs_droplink(tp, dp); - if (error) - goto out_bmap_cancel; - - /* - * Drop the "." link from ip to self. - */ - error = xfs_droplink(tp, ip); - if (error) - goto out_bmap_cancel; - } else { - /* - * When removing a non-directory we need to log the parent - * inode here. For a directory this is done implicitly - * by the xfs_droplink call for the ".." entry. - */ - xfs_trans_log_inode(tp, dp, XFS_ILOG_CORE); - } - - /* - * Drop the link from dp to ip. - */ - error = xfs_droplink(tp, ip); - if (error) - goto out_bmap_cancel; - - /* - * Determine if this is the last link while - * we are in the transaction. - */ - link_zero = (ip->i_d.di_nlink == 0); - - /* - * If this is a synchronous mount, make sure that the - * remove transaction goes to disk before returning to - * the user. - */ - if (mp->m_flags & (XFS_MOUNT_WSYNC|XFS_MOUNT_DIRSYNC)) - xfs_trans_set_sync(tp); - - error = xfs_bmap_finish(&tp, &free_list, &committed); - if (error) - goto out_bmap_cancel; - - error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES); - if (error) - goto std_return; - - /* - * If we are using filestreams, kill the stream association. - * If the file is still open it may get a new one but that - * will get killed on last close in xfs_close() so we don't - * have to worry about that. - */ - if (!is_dir && link_zero && xfs_inode_is_filestream(ip)) - xfs_filestream_deassociate(ip); - - return 0; - - out_bmap_cancel: - xfs_bmap_cancel(&free_list); - cancel_flags |= XFS_TRANS_ABORT; - out_trans_cancel: - xfs_trans_cancel(tp, cancel_flags); - std_return: - return error; -} - -int -xfs_link( - xfs_inode_t *tdp, - xfs_inode_t *sip, - struct xfs_name *target_name) -{ - xfs_mount_t *mp = tdp->i_mount; - xfs_trans_t *tp; - int error; - xfs_bmap_free_t free_list; - xfs_fsblock_t first_block; - int cancel_flags; - int committed; - int resblks; - - trace_xfs_link(tdp, target_name); - - ASSERT(!S_ISDIR(sip->i_d.di_mode)); - - if (XFS_FORCED_SHUTDOWN(mp)) - return XFS_ERROR(EIO); - - error = xfs_qm_dqattach(sip, 0); - if (error) - goto std_return; - - error = xfs_qm_dqattach(tdp, 0); - if (error) - goto std_return; - - tp = xfs_trans_alloc(mp, XFS_TRANS_LINK); - cancel_flags = XFS_TRANS_RELEASE_LOG_RES; - resblks = XFS_LINK_SPACE_RES(mp, target_name->len); - error = xfs_trans_reserve(tp, resblks, XFS_LINK_LOG_RES(mp), 0, - XFS_TRANS_PERM_LOG_RES, XFS_LINK_LOG_COUNT); - if (error == ENOSPC) { - resblks = 0; - error = xfs_trans_reserve(tp, 0, XFS_LINK_LOG_RES(mp), 0, - XFS_TRANS_PERM_LOG_RES, XFS_LINK_LOG_COUNT); - } - if (error) { - cancel_flags = 0; - goto error_return; - } - - xfs_lock_two_inodes(sip, tdp, XFS_ILOCK_EXCL); - - xfs_trans_ijoin(tp, sip, XFS_ILOCK_EXCL); - xfs_trans_ijoin(tp, tdp, XFS_ILOCK_EXCL); - - /* - * If we are using project inheritance, we only allow hard link - * creation in our tree when the project IDs are the same; else - * the tree quota mechanism could be circumvented. - */ - if (unlikely((tdp->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) && - (xfs_get_projid(tdp) != xfs_get_projid(sip)))) { - error = XFS_ERROR(EXDEV); - goto error_return; - } - - error = xfs_dir_canenter(tp, tdp, target_name, resblks); - if (error) - goto error_return; - - xfs_bmap_init(&free_list, &first_block); - - error = xfs_dir_createname(tp, tdp, target_name, sip->i_ino, - &first_block, &free_list, resblks); - if (error) - goto abort_return; - xfs_trans_ichgtime(tp, tdp, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG); - xfs_trans_log_inode(tp, tdp, XFS_ILOG_CORE); - - error = xfs_bumplink(tp, sip); - if (error) - goto abort_return; - - /* - * If this is a synchronous mount, make sure that the - * link transaction goes to disk before returning to - * the user. - */ - if (mp->m_flags & (XFS_MOUNT_WSYNC|XFS_MOUNT_DIRSYNC)) { - xfs_trans_set_sync(tp); - } - - error = xfs_bmap_finish (&tp, &free_list, &committed); - if (error) { - xfs_bmap_cancel(&free_list); - goto abort_return; - } - - return xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES); - - abort_return: - cancel_flags |= XFS_TRANS_ABORT; - error_return: - xfs_trans_cancel(tp, cancel_flags); - std_return: - return error; -} - -int -xfs_set_dmattrs( - xfs_inode_t *ip, - u_int evmask, - u_int16_t state) -{ - xfs_mount_t *mp = ip->i_mount; - xfs_trans_t *tp; - int error; - - if (!capable(CAP_SYS_ADMIN)) - return XFS_ERROR(EPERM); - - if (XFS_FORCED_SHUTDOWN(mp)) - return XFS_ERROR(EIO); - - tp = xfs_trans_alloc(mp, XFS_TRANS_SET_DMATTRS); - error = xfs_trans_reserve(tp, 0, XFS_ICHANGE_LOG_RES (mp), 0, 0, 0); - if (error) { - xfs_trans_cancel(tp, 0); - return error; - } - xfs_ilock(ip, XFS_ILOCK_EXCL); - xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); - - ip->i_d.di_dmevmask = evmask; - ip->i_d.di_dmstate = state; - - xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); - error = xfs_trans_commit(tp, 0); - - return error; -} - -/* - * xfs_alloc_file_space() - * This routine allocates disk space for the given file. - * - * If alloc_type == 0, this request is for an ALLOCSP type - * request which will change the file size. In this case, no - * DMAPI event will be generated by the call. A TRUNCATE event - * will be generated later by xfs_setattr. - * - * If alloc_type != 0, this request is for a RESVSP type - * request, and a DMAPI DM_EVENT_WRITE will be generated if the - * lower block boundary byte address is less than the file's - * length. - * - * RETURNS: - * 0 on success - * errno on error - * - */ -STATIC int -xfs_alloc_file_space( - xfs_inode_t *ip, - xfs_off_t offset, - xfs_off_t len, - int alloc_type, - int attr_flags) -{ - xfs_mount_t *mp = ip->i_mount; - xfs_off_t count; - xfs_filblks_t allocated_fsb; - xfs_filblks_t allocatesize_fsb; - xfs_extlen_t extsz, temp; - xfs_fileoff_t startoffset_fsb; - xfs_fsblock_t firstfsb; - int nimaps; - int quota_flag; - int rt; - xfs_trans_t *tp; - xfs_bmbt_irec_t imaps[1], *imapp; - xfs_bmap_free_t free_list; - uint qblocks, resblks, resrtextents; - int committed; - int error; - - trace_xfs_alloc_file_space(ip); - - if (XFS_FORCED_SHUTDOWN(mp)) - return XFS_ERROR(EIO); - - error = xfs_qm_dqattach(ip, 0); - if (error) - return error; - - if (len <= 0) - return XFS_ERROR(EINVAL); - - rt = XFS_IS_REALTIME_INODE(ip); - extsz = xfs_get_extsz_hint(ip); - - count = len; - imapp = &imaps[0]; - nimaps = 1; - startoffset_fsb = XFS_B_TO_FSBT(mp, offset); - allocatesize_fsb = XFS_B_TO_FSB(mp, count); - - /* - * Allocate file space until done or until there is an error - */ - while (allocatesize_fsb && !error) { - xfs_fileoff_t s, e; - - /* - * Determine space reservations for data/realtime. - */ - if (unlikely(extsz)) { - s = startoffset_fsb; - do_div(s, extsz); - s *= extsz; - e = startoffset_fsb + allocatesize_fsb; - if ((temp = do_mod(startoffset_fsb, extsz))) - e += temp; - if ((temp = do_mod(e, extsz))) - e += extsz - temp; - } else { - s = 0; - e = allocatesize_fsb; - } - - /* - * The transaction reservation is limited to a 32-bit block - * count, hence we need to limit the number of blocks we are - * trying to reserve to avoid an overflow. We can't allocate - * more than @nimaps extents, and an extent is limited on disk - * to MAXEXTLEN (21 bits), so use that to enforce the limit. - */ - resblks = min_t(xfs_fileoff_t, (e - s), (MAXEXTLEN * nimaps)); - if (unlikely(rt)) { - resrtextents = qblocks = resblks; - resrtextents /= mp->m_sb.sb_rextsize; - resblks = XFS_DIOSTRAT_SPACE_RES(mp, 0); - quota_flag = XFS_QMOPT_RES_RTBLKS; - } else { - resrtextents = 0; - resblks = qblocks = XFS_DIOSTRAT_SPACE_RES(mp, resblks); - quota_flag = XFS_QMOPT_RES_REGBLKS; - } - - /* - * Allocate and setup the transaction. - */ - tp = xfs_trans_alloc(mp, XFS_TRANS_DIOSTRAT); - error = xfs_trans_reserve(tp, resblks, - XFS_WRITE_LOG_RES(mp), resrtextents, - XFS_TRANS_PERM_LOG_RES, - XFS_WRITE_LOG_COUNT); - /* - * Check for running out of space - */ - if (error) { - /* - * Free the transaction structure. - */ - ASSERT(error == ENOSPC || XFS_FORCED_SHUTDOWN(mp)); - xfs_trans_cancel(tp, 0); - break; - } - xfs_ilock(ip, XFS_ILOCK_EXCL); - error = xfs_trans_reserve_quota_nblks(tp, ip, qblocks, - 0, quota_flag); - if (error) - goto error1; - - xfs_trans_ijoin(tp, ip, 0); - - xfs_bmap_init(&free_list, &firstfsb); - error = xfs_bmapi_write(tp, ip, startoffset_fsb, - allocatesize_fsb, alloc_type, &firstfsb, - 0, imapp, &nimaps, &free_list); - if (error) { - goto error0; - } - - /* - * Complete the transaction - */ - error = xfs_bmap_finish(&tp, &free_list, &committed); - if (error) { - goto error0; - } - - error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES); - xfs_iunlock(ip, XFS_ILOCK_EXCL); - if (error) { - break; - } - - allocated_fsb = imapp->br_blockcount; - - if (nimaps == 0) { - error = XFS_ERROR(ENOSPC); - break; - } - - startoffset_fsb += allocated_fsb; - allocatesize_fsb -= allocated_fsb; - } - - return error; - -error0: /* Cancel bmap, unlock inode, unreserve quota blocks, cancel trans */ - xfs_bmap_cancel(&free_list); - xfs_trans_unreserve_quota_nblks(tp, ip, (long)qblocks, 0, quota_flag); - -error1: /* Just cancel transaction */ - xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES | XFS_TRANS_ABORT); - xfs_iunlock(ip, XFS_ILOCK_EXCL); - return error; -} - -/* - * Zero file bytes between startoff and endoff inclusive. - * The iolock is held exclusive and no blocks are buffered. - * - * This function is used by xfs_free_file_space() to zero - * partial blocks when the range to free is not block aligned. - * When unreserving space with boundaries that are not block - * aligned we round up the start and round down the end - * boundaries and then use this function to zero the parts of - * the blocks that got dropped during the rounding. - */ -STATIC int -xfs_zero_remaining_bytes( - xfs_inode_t *ip, - xfs_off_t startoff, - xfs_off_t endoff) -{ - xfs_bmbt_irec_t imap; - xfs_fileoff_t offset_fsb; - xfs_off_t lastoffset; - xfs_off_t offset; - xfs_buf_t *bp; - xfs_mount_t *mp = ip->i_mount; - int nimap; - int error = 0; - - /* - * Avoid doing I/O beyond eof - it's not necessary - * since nothing can read beyond eof. The space will - * be zeroed when the file is extended anyway. - */ - if (startoff >= XFS_ISIZE(ip)) - return 0; - - if (endoff > XFS_ISIZE(ip)) - endoff = XFS_ISIZE(ip); - - bp = xfs_buf_get_uncached(XFS_IS_REALTIME_INODE(ip) ? - mp->m_rtdev_targp : mp->m_ddev_targp, - BTOBB(mp->m_sb.sb_blocksize), 0); - if (!bp) - return XFS_ERROR(ENOMEM); - - xfs_buf_unlock(bp); - - for (offset = startoff; offset <= endoff; offset = lastoffset + 1) { - offset_fsb = XFS_B_TO_FSBT(mp, offset); - nimap = 1; - error = xfs_bmapi_read(ip, offset_fsb, 1, &imap, &nimap, 0); - if (error || nimap < 1) - break; - ASSERT(imap.br_blockcount >= 1); - ASSERT(imap.br_startoff == offset_fsb); - lastoffset = XFS_FSB_TO_B(mp, imap.br_startoff + 1) - 1; - if (lastoffset > endoff) - lastoffset = endoff; - if (imap.br_startblock == HOLESTARTBLOCK) - continue; - ASSERT(imap.br_startblock != DELAYSTARTBLOCK); - if (imap.br_state == XFS_EXT_UNWRITTEN) - continue; - XFS_BUF_UNDONE(bp); - XFS_BUF_UNWRITE(bp); - XFS_BUF_READ(bp); - XFS_BUF_SET_ADDR(bp, xfs_fsb_to_db(ip, imap.br_startblock)); - xfsbdstrat(mp, bp); - error = xfs_buf_iowait(bp); - if (error) { - xfs_buf_ioerror_alert(bp, - "xfs_zero_remaining_bytes(read)"); - break; - } - memset(bp->b_addr + - (offset - XFS_FSB_TO_B(mp, imap.br_startoff)), - 0, lastoffset - offset + 1); - XFS_BUF_UNDONE(bp); - XFS_BUF_UNREAD(bp); - XFS_BUF_WRITE(bp); - xfsbdstrat(mp, bp); - error = xfs_buf_iowait(bp); - if (error) { - xfs_buf_ioerror_alert(bp, - "xfs_zero_remaining_bytes(write)"); - break; - } - } - xfs_buf_free(bp); - return error; -} - -/* - * xfs_free_file_space() - * This routine frees disk space for the given file. - * - * This routine is only called by xfs_change_file_space - * for an UNRESVSP type call. - * - * RETURNS: - * 0 on success - * errno on error - * - */ -STATIC int -xfs_free_file_space( - xfs_inode_t *ip, - xfs_off_t offset, - xfs_off_t len, - int attr_flags) -{ - int committed; - int done; - xfs_fileoff_t endoffset_fsb; - int error; - xfs_fsblock_t firstfsb; - xfs_bmap_free_t free_list; - xfs_bmbt_irec_t imap; - xfs_off_t ioffset; - xfs_extlen_t mod=0; - xfs_mount_t *mp; - int nimap; - uint resblks; - xfs_off_t rounding; - int rt; - xfs_fileoff_t startoffset_fsb; - xfs_trans_t *tp; - int need_iolock = 1; - - mp = ip->i_mount; - - trace_xfs_free_file_space(ip); - - error = xfs_qm_dqattach(ip, 0); - if (error) - return error; - - error = 0; - if (len <= 0) /* if nothing being freed */ - return error; - rt = XFS_IS_REALTIME_INODE(ip); - startoffset_fsb = XFS_B_TO_FSB(mp, offset); - endoffset_fsb = XFS_B_TO_FSBT(mp, offset + len); - - if (attr_flags & XFS_ATTR_NOLOCK) - need_iolock = 0; - if (need_iolock) { - xfs_ilock(ip, XFS_IOLOCK_EXCL); - /* wait for the completion of any pending DIOs */ - inode_dio_wait(VFS_I(ip)); - } - - rounding = max_t(xfs_off_t, 1 << mp->m_sb.sb_blocklog, PAGE_CACHE_SIZE); - ioffset = offset & ~(rounding - 1); - error = -filemap_write_and_wait_range(VFS_I(ip)->i_mapping, - ioffset, -1); - if (error) - goto out_unlock_iolock; - truncate_pagecache_range(VFS_I(ip), ioffset, -1); - - /* - * Need to zero the stuff we're not freeing, on disk. - * If it's a realtime file & can't use unwritten extents then we - * actually need to zero the extent edges. Otherwise xfs_bunmapi - * will take care of it for us. - */ - if (rt && !xfs_sb_version_hasextflgbit(&mp->m_sb)) { - nimap = 1; - error = xfs_bmapi_read(ip, startoffset_fsb, 1, - &imap, &nimap, 0); - if (error) - goto out_unlock_iolock; - ASSERT(nimap == 0 || nimap == 1); - if (nimap && imap.br_startblock != HOLESTARTBLOCK) { - xfs_daddr_t block; - - ASSERT(imap.br_startblock != DELAYSTARTBLOCK); - block = imap.br_startblock; - mod = do_div(block, mp->m_sb.sb_rextsize); - if (mod) - startoffset_fsb += mp->m_sb.sb_rextsize - mod; - } - nimap = 1; - error = xfs_bmapi_read(ip, endoffset_fsb - 1, 1, - &imap, &nimap, 0); - if (error) - goto out_unlock_iolock; - ASSERT(nimap == 0 || nimap == 1); - if (nimap && imap.br_startblock != HOLESTARTBLOCK) { - ASSERT(imap.br_startblock != DELAYSTARTBLOCK); - mod++; - if (mod && (mod != mp->m_sb.sb_rextsize)) - endoffset_fsb -= mod; - } - } - if ((done = (endoffset_fsb <= startoffset_fsb))) - /* - * One contiguous piece to clear - */ - error = xfs_zero_remaining_bytes(ip, offset, offset + len - 1); - else { - /* - * Some full blocks, possibly two pieces to clear - */ - if (offset < XFS_FSB_TO_B(mp, startoffset_fsb)) - error = xfs_zero_remaining_bytes(ip, offset, - XFS_FSB_TO_B(mp, startoffset_fsb) - 1); - if (!error && - XFS_FSB_TO_B(mp, endoffset_fsb) < offset + len) - error = xfs_zero_remaining_bytes(ip, - XFS_FSB_TO_B(mp, endoffset_fsb), - offset + len - 1); - } - - /* - * free file space until done or until there is an error - */ - resblks = XFS_DIOSTRAT_SPACE_RES(mp, 0); - while (!error && !done) { - - /* - * allocate and setup the transaction. Allow this - * transaction to dip into the reserve blocks to ensure - * the freeing of the space succeeds at ENOSPC. - */ - tp = xfs_trans_alloc(mp, XFS_TRANS_DIOSTRAT); - tp->t_flags |= XFS_TRANS_RESERVE; - error = xfs_trans_reserve(tp, - resblks, - XFS_WRITE_LOG_RES(mp), - 0, - XFS_TRANS_PERM_LOG_RES, - XFS_WRITE_LOG_COUNT); - - /* - * check for running out of space - */ - if (error) { - /* - * Free the transaction structure. - */ - ASSERT(error == ENOSPC || XFS_FORCED_SHUTDOWN(mp)); - xfs_trans_cancel(tp, 0); - break; - } - xfs_ilock(ip, XFS_ILOCK_EXCL); - error = xfs_trans_reserve_quota(tp, mp, - ip->i_udquot, ip->i_gdquot, ip->i_pdquot, - resblks, 0, XFS_QMOPT_RES_REGBLKS); - if (error) - goto error1; - - xfs_trans_ijoin(tp, ip, 0); - - /* - * issue the bunmapi() call to free the blocks - */ - xfs_bmap_init(&free_list, &firstfsb); - error = xfs_bunmapi(tp, ip, startoffset_fsb, - endoffset_fsb - startoffset_fsb, - 0, 2, &firstfsb, &free_list, &done); - if (error) { - goto error0; - } - - /* - * complete the transaction - */ - error = xfs_bmap_finish(&tp, &free_list, &committed); - if (error) { - goto error0; - } - - error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES); - xfs_iunlock(ip, XFS_ILOCK_EXCL); - } - - out_unlock_iolock: - if (need_iolock) - xfs_iunlock(ip, XFS_IOLOCK_EXCL); - return error; - - error0: - xfs_bmap_cancel(&free_list); - error1: - xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES | XFS_TRANS_ABORT); - xfs_iunlock(ip, need_iolock ? (XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL) : - XFS_ILOCK_EXCL); - return error; -} - - -STATIC int -xfs_zero_file_space( - struct xfs_inode *ip, - xfs_off_t offset, - xfs_off_t len, - int attr_flags) -{ - struct xfs_mount *mp = ip->i_mount; - uint granularity; - xfs_off_t start_boundary; - xfs_off_t end_boundary; - int error; - - granularity = max_t(uint, 1 << mp->m_sb.sb_blocklog, PAGE_CACHE_SIZE); - - /* - * Round the range of extents we are going to convert inwards. If the - * offset is aligned, then it doesn't get changed so we zero from the - * start of the block offset points to. - */ - start_boundary = round_up(offset, granularity); - end_boundary = round_down(offset + len, granularity); - - ASSERT(start_boundary >= offset); - ASSERT(end_boundary <= offset + len); - - if (!(attr_flags & XFS_ATTR_NOLOCK)) - xfs_ilock(ip, XFS_IOLOCK_EXCL); - - if (start_boundary < end_boundary - 1) { - /* punch out the page cache over the conversion range */ - truncate_pagecache_range(VFS_I(ip), start_boundary, - end_boundary - 1); - /* convert the blocks */ - error = xfs_alloc_file_space(ip, start_boundary, - end_boundary - start_boundary - 1, - XFS_BMAPI_PREALLOC | XFS_BMAPI_CONVERT, - attr_flags); - if (error) - goto out_unlock; - - /* We've handled the interior of the range, now for the edges */ - if (start_boundary != offset) - error = xfs_iozero(ip, offset, start_boundary - offset); - if (error) - goto out_unlock; - - if (end_boundary != offset + len) - error = xfs_iozero(ip, end_boundary, - offset + len - end_boundary); - - } else { - /* - * It's either a sub-granularity range or the range spanned lies - * partially across two adjacent blocks. - */ - error = xfs_iozero(ip, offset, len); - } - -out_unlock: - if (!(attr_flags & XFS_ATTR_NOLOCK)) - xfs_iunlock(ip, XFS_IOLOCK_EXCL); - return error; - -} - -/* - * xfs_change_file_space() - * This routine allocates or frees disk space for the given file. - * The user specified parameters are checked for alignment and size - * limitations. - * - * RETURNS: - * 0 on success - * errno on error - * - */ -int -xfs_change_file_space( - xfs_inode_t *ip, - int cmd, - xfs_flock64_t *bf, - xfs_off_t offset, - int attr_flags) -{ - xfs_mount_t *mp = ip->i_mount; - int clrprealloc; - int error; - xfs_fsize_t fsize; - int setprealloc; - xfs_off_t startoffset; - xfs_trans_t *tp; - struct iattr iattr; - - if (!S_ISREG(ip->i_d.di_mode)) - return XFS_ERROR(EINVAL); - - switch (bf->l_whence) { - case 0: /*SEEK_SET*/ - break; - case 1: /*SEEK_CUR*/ - bf->l_start += offset; - break; - case 2: /*SEEK_END*/ - bf->l_start += XFS_ISIZE(ip); - break; - default: - return XFS_ERROR(EINVAL); - } - - /* - * length of <= 0 for resv/unresv/zero is invalid. length for - * alloc/free is ignored completely and we have no idea what userspace - * might have set it to, so set it to zero to allow range - * checks to pass. - */ - switch (cmd) { - case XFS_IOC_ZERO_RANGE: - case XFS_IOC_RESVSP: - case XFS_IOC_RESVSP64: - case XFS_IOC_UNRESVSP: - case XFS_IOC_UNRESVSP64: - if (bf->l_len <= 0) - return XFS_ERROR(EINVAL); - break; - default: - bf->l_len = 0; - break; - } - - if (bf->l_start < 0 || - bf->l_start > mp->m_super->s_maxbytes || - bf->l_start + bf->l_len < 0 || - bf->l_start + bf->l_len >= mp->m_super->s_maxbytes) - return XFS_ERROR(EINVAL); - - bf->l_whence = 0; - - startoffset = bf->l_start; - fsize = XFS_ISIZE(ip); - - setprealloc = clrprealloc = 0; - switch (cmd) { - case XFS_IOC_ZERO_RANGE: - error = xfs_zero_file_space(ip, startoffset, bf->l_len, - attr_flags); - if (error) - return error; - setprealloc = 1; - break; - - case XFS_IOC_RESVSP: - case XFS_IOC_RESVSP64: - error = xfs_alloc_file_space(ip, startoffset, bf->l_len, - XFS_BMAPI_PREALLOC, attr_flags); - if (error) - return error; - setprealloc = 1; - break; - - case XFS_IOC_UNRESVSP: - case XFS_IOC_UNRESVSP64: - if ((error = xfs_free_file_space(ip, startoffset, bf->l_len, - attr_flags))) - return error; - break; - - case XFS_IOC_ALLOCSP: - case XFS_IOC_ALLOCSP64: - case XFS_IOC_FREESP: - case XFS_IOC_FREESP64: - /* - * These operations actually do IO when extending the file, but - * the allocation is done seperately to the zeroing that is - * done. This set of operations need to be serialised against - * other IO operations, such as truncate and buffered IO. We - * need to take the IOLOCK here to serialise the allocation and - * zeroing IO to prevent other IOLOCK holders (e.g. getbmap, - * truncate, direct IO) from racing against the transient - * allocated but not written state we can have here. - */ - xfs_ilock(ip, XFS_IOLOCK_EXCL); - if (startoffset > fsize) { - error = xfs_alloc_file_space(ip, fsize, - startoffset - fsize, 0, - attr_flags | XFS_ATTR_NOLOCK); - if (error) { - xfs_iunlock(ip, XFS_IOLOCK_EXCL); - break; - } - } - - iattr.ia_valid = ATTR_SIZE; - iattr.ia_size = startoffset; - - error = xfs_setattr_size(ip, &iattr, - attr_flags | XFS_ATTR_NOLOCK); - xfs_iunlock(ip, XFS_IOLOCK_EXCL); - - if (error) - return error; - - clrprealloc = 1; - break; - - default: - ASSERT(0); - return XFS_ERROR(EINVAL); - } - - /* - * update the inode timestamp, mode, and prealloc flag bits - */ - tp = xfs_trans_alloc(mp, XFS_TRANS_WRITEID); - - if ((error = xfs_trans_reserve(tp, 0, XFS_WRITEID_LOG_RES(mp), - 0, 0, 0))) { - /* ASSERT(0); */ - xfs_trans_cancel(tp, 0); - return error; - } - - xfs_ilock(ip, XFS_ILOCK_EXCL); - xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); - - if ((attr_flags & XFS_ATTR_DMI) == 0) { - ip->i_d.di_mode &= ~S_ISUID; - - /* - * Note that we don't have to worry about mandatory - * file locking being disabled here because we only - * clear the S_ISGID bit if the Group execute bit is - * on, but if it was on then mandatory locking wouldn't - * have been enabled. - */ - if (ip->i_d.di_mode & S_IXGRP) - ip->i_d.di_mode &= ~S_ISGID; - - xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG); - } - if (setprealloc) - ip->i_d.di_flags |= XFS_DIFLAG_PREALLOC; - else if (clrprealloc) - ip->i_d.di_flags &= ~XFS_DIFLAG_PREALLOC; - - xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); - if (attr_flags & XFS_ATTR_SYNC) - xfs_trans_set_sync(tp); - return xfs_trans_commit(tp, 0); -} diff --git a/fs/xfs/xfs_vnodeops.h b/fs/xfs/xfs_vnodeops.h deleted file mode 100644 index 38c67c3..0000000 --- a/fs/xfs/xfs_vnodeops.h +++ /dev/null @@ -1,55 +0,0 @@ -#ifndef _XFS_VNODEOPS_H -#define _XFS_VNODEOPS_H 1 - -struct attrlist_cursor_kern; -struct file; -struct iattr; -struct inode; -struct iovec; -struct kiocb; -struct pipe_inode_info; -struct uio; -struct xfs_inode; - - -int xfs_setattr_nonsize(struct xfs_inode *ip, struct iattr *vap, int flags); -int xfs_setattr_size(struct xfs_inode *ip, struct iattr *vap, int flags); -#define XFS_ATTR_DMI 0x01 /* invocation from a DMI function */ -#define XFS_ATTR_NONBLOCK 0x02 /* return EAGAIN if operation would block */ -#define XFS_ATTR_NOLOCK 0x04 /* Don't grab any conflicting locks */ -#define XFS_ATTR_NOACL 0x08 /* Don't call xfs_acl_chmod */ -#define XFS_ATTR_SYNC 0x10 /* synchronous operation required */ - -int xfs_readlink(struct xfs_inode *ip, char *link); -int xfs_release(struct xfs_inode *ip); -int xfs_inactive(struct xfs_inode *ip); -int xfs_lookup(struct xfs_inode *dp, struct xfs_name *name, - struct xfs_inode **ipp, struct xfs_name *ci_name); -int xfs_create(struct xfs_inode *dp, struct xfs_name *name, umode_t mode, - xfs_dev_t rdev, struct xfs_inode **ipp); -int xfs_remove(struct xfs_inode *dp, struct xfs_name *name, - struct xfs_inode *ip); -int xfs_link(struct xfs_inode *tdp, struct xfs_inode *sip, - struct xfs_name *target_name); -int xfs_readdir(struct xfs_inode *dp, struct dir_context *ctx, size_t bufsize); -int xfs_symlink(struct xfs_inode *dp, struct xfs_name *link_name, - const char *target_path, umode_t mode, struct xfs_inode **ipp); -int xfs_set_dmattrs(struct xfs_inode *ip, u_int evmask, u_int16_t state); -int xfs_change_file_space(struct xfs_inode *ip, int cmd, - xfs_flock64_t *bf, xfs_off_t offset, int attr_flags); -int xfs_rename(struct xfs_inode *src_dp, struct xfs_name *src_name, - struct xfs_inode *src_ip, struct xfs_inode *target_dp, - struct xfs_name *target_name, struct xfs_inode *target_ip); -int xfs_attr_get(struct xfs_inode *ip, const unsigned char *name, - unsigned char *value, int *valuelenp, int flags); -int xfs_attr_set(struct xfs_inode *dp, const unsigned char *name, - unsigned char *value, int valuelen, int flags); -int xfs_attr_remove(struct xfs_inode *dp, const unsigned char *name, int flags); -int xfs_attr_list(struct xfs_inode *dp, char *buffer, int bufsize, - int flags, struct attrlist_cursor_kern *cursor); - -int xfs_iozero(struct xfs_inode *, loff_t, size_t); -int xfs_zero_eof(struct xfs_inode *, xfs_off_t, xfs_fsize_t); -int xfs_free_eofblocks(struct xfs_mount *, struct xfs_inode *, bool); - -#endif /* _XFS_VNODEOPS_H */ diff --git a/fs/xfs/xfs_xattr.c b/fs/xfs/xfs_xattr.c index 87d3e03..e01f35e 100644 --- a/fs/xfs/xfs_xattr.c +++ b/fs/xfs/xfs_xattr.c @@ -17,13 +17,13 @@ */ #include "xfs.h" +#include "xfs_log_format.h" #include "xfs_da_btree.h" #include "xfs_bmap_btree.h" #include "xfs_inode.h" #include "xfs_attr.h" #include "xfs_attr_leaf.h" #include "xfs_acl.h" -#include "xfs_vnodeops.h" #include <linux/posix_acl_xattr.h> #include <linux/xattr.h> diff --git a/include/linux/quota.h b/include/linux/quota.h index d133711..cc7494a 100644 --- a/include/linux/quota.h +++ b/include/linux/quota.h @@ -328,6 +328,7 @@ struct quotactl_ops { int (*set_dqblk)(struct super_block *, struct kqid, struct fs_disk_quota *); int (*get_xstate)(struct super_block *, struct fs_quota_stat *); int (*set_xstate)(struct super_block *, unsigned int, int); + int (*get_xstatev)(struct super_block *, struct fs_quota_statv *); }; struct quota_format_type { diff --git a/include/uapi/linux/dqblk_xfs.h b/include/uapi/linux/dqblk_xfs.h index 8655280..dcd75cc 100644 --- a/include/uapi/linux/dqblk_xfs.h +++ b/include/uapi/linux/dqblk_xfs.h @@ -38,6 +38,7 @@ #define Q_XGETQSTAT XQM_CMD(5) /* get quota subsystem status */ #define Q_XQUOTARM XQM_CMD(6) /* free disk space used by dquots */ #define Q_XQUOTASYNC XQM_CMD(7) /* delalloc flush, updates dquots */ +#define Q_XGETQSTATV XQM_CMD(8) /* newer version of get quota */ /* * fs_disk_quota structure: @@ -163,4 +164,50 @@ typedef struct fs_quota_stat { __u16 qs_iwarnlimit; /* limit for num warnings */ } fs_quota_stat_t; +/* + * fs_quota_statv is used by Q_XGETQSTATV for a given file system. It provides + * a centralized way to get meta information about the quota subsystem. eg. + * space taken up for user, group, and project quotas, number of dquots + * currently incore. + * + * This version has proper versioning support with appropriate padding for + * future expansions, and ability to expand for future without creating any + * backward compatibility issues. + * + * Q_XGETQSTATV uses the passed in value of the requested version via + * fs_quota_statv.qs_version to determine the return data layout of + * fs_quota_statv. The kernel will fill the data fields relevant to that + * version. + * + * If kernel does not support user space caller specified version, EINVAL will + * be returned. User space caller can then reduce the version number and retry + * the same command. + */ +#define FS_QSTATV_VERSION1 1 /* fs_quota_statv.qs_version */ +/* + * Some basic information about 'quota files' for Q_XGETQSTATV command + */ +struct fs_qfilestatv { + __u64 qfs_ino; /* inode number */ + __u64 qfs_nblks; /* number of BBs 512-byte-blks */ + __u32 qfs_nextents; /* number of extents */ + __u32 qfs_pad; /* pad for 8-byte alignment */ +}; + +struct fs_quota_statv { + __s8 qs_version; /* version for future changes */ + __u8 qs_pad1; /* pad for 16bit alignment */ + __u16 qs_flags; /* FS_QUOTA_.* flags */ + __u32 qs_incoredqs; /* number of dquots incore */ + struct fs_qfilestatv qs_uquota; /* user quota information */ + struct fs_qfilestatv qs_gquota; /* group quota information */ + struct fs_qfilestatv qs_pquota; /* project quota information */ + __s32 qs_btimelimit; /* limit for blks timer */ + __s32 qs_itimelimit; /* limit for inodes timer */ + __s32 qs_rtbtimelimit;/* limit for rt blks timer */ + __u16 qs_bwarnlimit; /* limit for num warnings */ + __u16 qs_iwarnlimit; /* limit for num warnings */ + __u64 qs_pad2[8]; /* for future proofing */ +}; + #endif /* _LINUX_DQBLK_XFS_H */ diff --git a/init/Kconfig b/init/Kconfig index 0a2c4bc..bfa9e13 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -1123,7 +1123,6 @@ config IPC_NS config USER_NS bool "User namespace" - depends on UIDGID_CONVERTED select UIDGID_STRICT_TYPE_CHECKS default n @@ -1157,20 +1156,8 @@ config NET_NS endif # NAMESPACES -config UIDGID_CONVERTED - # True if all of the selected software conmponents are known - # to have uid_t and gid_t converted to kuid_t and kgid_t - # where appropriate and are otherwise safe to use with - # the user namespace. - bool - default y - - # Filesystems - depends on XFS_FS = n - config UIDGID_STRICT_TYPE_CHECKS bool "Require conversions between uid/gids and their internal representation" - depends on UIDGID_CONVERTED default n help While the nececessary conversions are being added to all subsystems this option allows diff --git a/kernel/capability.c b/kernel/capability.c index 6fc1c8a..4e66bf9 100644 --- a/kernel/capability.c +++ b/kernel/capability.c @@ -452,3 +452,4 @@ bool inode_capable(const struct inode *inode, int cap) return ns_capable(ns, cap) && kuid_has_mapping(ns, inode->i_uid); } +EXPORT_SYMBOL(inode_capable); |
