diff options
Diffstat (limited to 'fs/ceph')
| -rw-r--r-- | fs/ceph/addr.c | 203 | ||||
| -rw-r--r-- | fs/ceph/caps.c | 4 | ||||
| -rw-r--r-- | fs/ceph/inode.c | 3 | ||||
| -rw-r--r-- | fs/ceph/mds_client.c | 4 | ||||
| -rw-r--r-- | fs/ceph/mds_client.h | 9 | ||||
| -rw-r--r-- | fs/ceph/super.c | 15 | ||||
| -rw-r--r-- | fs/ceph/super.h | 17 |
7 files changed, 249 insertions, 6 deletions
diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c index feeaf3b..b960277 100644 --- a/fs/ceph/addr.c +++ b/fs/ceph/addr.c @@ -1598,3 +1598,206 @@ int ceph_mmap(struct file *file, struct vm_area_struct *vma) vma->vm_ops = &ceph_vmops; return 0; } + +enum { + POOL_READ = 1, + POOL_WRITE = 2, +}; + +static int __ceph_pool_perm_get(struct ceph_inode_info *ci, u32 pool) +{ + struct ceph_fs_client *fsc = ceph_inode_to_client(&ci->vfs_inode); + struct ceph_mds_client *mdsc = fsc->mdsc; + struct ceph_osd_request *rd_req = NULL, *wr_req = NULL; + struct rb_node **p, *parent; + struct ceph_pool_perm *perm; + struct page **pages; + int err = 0, err2 = 0, have = 0; + + down_read(&mdsc->pool_perm_rwsem); + p = &mdsc->pool_perm_tree.rb_node; + while (*p) { + perm = rb_entry(*p, struct ceph_pool_perm, node); + if (pool < perm->pool) + p = &(*p)->rb_left; + else if (pool > perm->pool) + p = &(*p)->rb_right; + else { + have = perm->perm; + break; + } + } + up_read(&mdsc->pool_perm_rwsem); + if (*p) + goto out; + + dout("__ceph_pool_perm_get pool %u no perm cached\n", pool); + + down_write(&mdsc->pool_perm_rwsem); + parent = NULL; + while (*p) { + parent = *p; + perm = rb_entry(parent, struct ceph_pool_perm, node); + if (pool < perm->pool) + p = &(*p)->rb_left; + else if (pool > perm->pool) + p = &(*p)->rb_right; + else { + have = perm->perm; + break; + } + } + if (*p) { + up_write(&mdsc->pool_perm_rwsem); + goto out; + } + + rd_req = ceph_osdc_alloc_request(&fsc->client->osdc, + ci->i_snap_realm->cached_context, + 1, false, GFP_NOFS); + if (!rd_req) { + err = -ENOMEM; + goto out_unlock; + } + + rd_req->r_flags = CEPH_OSD_FLAG_READ; + osd_req_op_init(rd_req, 0, CEPH_OSD_OP_STAT, 0); + rd_req->r_base_oloc.pool = pool; + snprintf(rd_req->r_base_oid.name, sizeof(rd_req->r_base_oid.name), + "%llx.00000000", ci->i_vino.ino); + rd_req->r_base_oid.name_len = strlen(rd_req->r_base_oid.name); + + wr_req = ceph_osdc_alloc_request(&fsc->client->osdc, + ci->i_snap_realm->cached_context, + 1, false, GFP_NOFS); + if (!wr_req) { + err = -ENOMEM; + goto out_unlock; + } + + wr_req->r_flags = CEPH_OSD_FLAG_WRITE | + CEPH_OSD_FLAG_ACK | CEPH_OSD_FLAG_ONDISK; + osd_req_op_init(wr_req, 0, CEPH_OSD_OP_CREATE, CEPH_OSD_OP_FLAG_EXCL); + wr_req->r_base_oloc.pool = pool; + wr_req->r_base_oid = rd_req->r_base_oid; + + /* one page should be large enough for STAT data */ + pages = ceph_alloc_page_vector(1, GFP_KERNEL); + if (IS_ERR(pages)) { + err = PTR_ERR(pages); + goto out_unlock; + } + + osd_req_op_raw_data_in_pages(rd_req, 0, pages, PAGE_SIZE, + 0, false, true); + ceph_osdc_build_request(rd_req, 0, NULL, CEPH_NOSNAP, + &ci->vfs_inode.i_mtime); + err = ceph_osdc_start_request(&fsc->client->osdc, rd_req, false); + + ceph_osdc_build_request(wr_req, 0, NULL, CEPH_NOSNAP, + &ci->vfs_inode.i_mtime); + err2 = ceph_osdc_start_request(&fsc->client->osdc, wr_req, false); + + if (!err) + err = ceph_osdc_wait_request(&fsc->client->osdc, rd_req); + if (!err2) + err2 = ceph_osdc_wait_request(&fsc->client->osdc, wr_req); + + if (err >= 0 || err == -ENOENT) + have |= POOL_READ; + else if (err != -EPERM) + goto out_unlock; + + if (err2 == 0 || err2 == -EEXIST) + have |= POOL_WRITE; + else if (err2 != -EPERM) { + err = err2; + goto out_unlock; + } + + perm = kmalloc(sizeof(*perm), GFP_NOFS); + if (!perm) { + err = -ENOMEM; + goto out_unlock; + } + + perm->pool = pool; + perm->perm = have; + rb_link_node(&perm->node, parent, p); + rb_insert_color(&perm->node, &mdsc->pool_perm_tree); + err = 0; +out_unlock: + up_write(&mdsc->pool_perm_rwsem); + + if (rd_req) + ceph_osdc_put_request(rd_req); + if (wr_req) + ceph_osdc_put_request(wr_req); +out: + if (!err) + err = have; + dout("__ceph_pool_perm_get pool %u result = %d\n", pool, err); + return err; +} + +int ceph_pool_perm_check(struct ceph_inode_info *ci, int need) +{ + u32 pool; + int ret, flags; + + if (ceph_test_mount_opt(ceph_inode_to_client(&ci->vfs_inode), + NOPOOLPERM)) + return 0; + + spin_lock(&ci->i_ceph_lock); + flags = ci->i_ceph_flags; + pool = ceph_file_layout_pg_pool(ci->i_layout); + spin_unlock(&ci->i_ceph_lock); +check: + if (flags & CEPH_I_POOL_PERM) { + if ((need & CEPH_CAP_FILE_RD) && !(flags & CEPH_I_POOL_RD)) { + dout("ceph_pool_perm_check pool %u no read perm\n", + pool); + return -EPERM; + } + if ((need & CEPH_CAP_FILE_WR) && !(flags & CEPH_I_POOL_WR)) { + dout("ceph_pool_perm_check pool %u no write perm\n", + pool); + return -EPERM; + } + return 0; + } + + ret = __ceph_pool_perm_get(ci, pool); + if (ret < 0) + return ret; + + flags = CEPH_I_POOL_PERM; + if (ret & POOL_READ) + flags |= CEPH_I_POOL_RD; + if (ret & POOL_WRITE) + flags |= CEPH_I_POOL_WR; + + spin_lock(&ci->i_ceph_lock); + if (pool == ceph_file_layout_pg_pool(ci->i_layout)) { + ci->i_ceph_flags = flags; + } else { + pool = ceph_file_layout_pg_pool(ci->i_layout); + flags = ci->i_ceph_flags; + } + spin_unlock(&ci->i_ceph_lock); + goto check; +} + +void ceph_pool_perm_destroy(struct ceph_mds_client *mdsc) +{ + struct ceph_pool_perm *perm; + struct rb_node *n; + + while (!RB_EMPTY_ROOT(&mdsc->pool_perm_tree)) { + n = rb_first(&mdsc->pool_perm_tree); + perm = rb_entry(n, struct ceph_pool_perm, node); + rb_erase(n, &mdsc->pool_perm_tree); + kfree(perm); + } +} diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c index be5ea6a..7c8e93a 100644 --- a/fs/ceph/caps.c +++ b/fs/ceph/caps.c @@ -2233,6 +2233,10 @@ int ceph_get_caps(struct ceph_inode_info *ci, int need, int want, { int _got, check_max, ret, err = 0; + ret = ceph_pool_perm_check(ci, need); + if (ret < 0) + return ret; + retry: if (endoff > 0) check_max_size(&ci->vfs_inode, endoff); diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c index e876e19..1a68c0e 100644 --- a/fs/ceph/inode.c +++ b/fs/ceph/inode.c @@ -753,7 +753,10 @@ static int fill_inode(struct inode *inode, struct page *locked_page, if (new_version || (new_issued & (CEPH_CAP_ANY_FILE_RD | CEPH_CAP_ANY_FILE_WR))) { + if (ci->i_layout.fl_pg_pool != info->layout.fl_pg_pool) + ci->i_ceph_flags &= ~CEPH_I_POOL_PERM; ci->i_layout = info->layout; + queue_trunc = ceph_fill_file_size(inode, issued, le32_to_cpu(info->truncate_seq), le64_to_cpu(info->truncate_size), diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c index 84f37f3..f125e06 100644 --- a/fs/ceph/mds_client.c +++ b/fs/ceph/mds_client.c @@ -3414,6 +3414,9 @@ int ceph_mdsc_init(struct ceph_fs_client *fsc) ceph_caps_init(mdsc); ceph_adjust_min_caps(mdsc, fsc->min_caps); + init_rwsem(&mdsc->pool_perm_rwsem); + mdsc->pool_perm_tree = RB_ROOT; + return 0; } @@ -3607,6 +3610,7 @@ static void ceph_mdsc_stop(struct ceph_mds_client *mdsc) ceph_mdsmap_destroy(mdsc->mdsmap); kfree(mdsc->sessions); ceph_caps_finalize(mdsc); + ceph_pool_perm_destroy(mdsc); } void ceph_mdsc_destroy(struct ceph_fs_client *fsc) diff --git a/fs/ceph/mds_client.h b/fs/ceph/mds_client.h index 1875b5d..d474141 100644 --- a/fs/ceph/mds_client.h +++ b/fs/ceph/mds_client.h @@ -260,6 +260,12 @@ struct ceph_mds_request { int r_num_caps; }; +struct ceph_pool_perm { + struct rb_node node; + u32 pool; + int perm; +}; + /* * mds client state */ @@ -328,6 +334,9 @@ struct ceph_mds_client { spinlock_t dentry_lru_lock; struct list_head dentry_lru; int num_dentry; + + struct rw_semaphore pool_perm_rwsem; + struct rb_root pool_perm_tree; }; extern const char *ceph_mds_op_name(int op); diff --git a/fs/ceph/super.c b/fs/ceph/super.c index 4e99053..9a53500 100644 --- a/fs/ceph/super.c +++ b/fs/ceph/super.c @@ -134,10 +134,12 @@ enum { Opt_noino32, Opt_fscache, Opt_nofscache, + Opt_poolperm, + Opt_nopoolperm, #ifdef CONFIG_CEPH_FS_POSIX_ACL Opt_acl, #endif - Opt_noacl + Opt_noacl, }; static match_table_t fsopt_tokens = { @@ -165,6 +167,8 @@ static match_table_t fsopt_tokens = { {Opt_noino32, "noino32"}, {Opt_fscache, "fsc"}, {Opt_nofscache, "nofsc"}, + {Opt_poolperm, "poolperm"}, + {Opt_nopoolperm, "nopoolperm"}, #ifdef CONFIG_CEPH_FS_POSIX_ACL {Opt_acl, "acl"}, #endif @@ -268,6 +272,13 @@ static int parse_fsopt_token(char *c, void *private) case Opt_nofscache: fsopt->flags &= ~CEPH_MOUNT_OPT_FSCACHE; break; + case Opt_poolperm: + fsopt->flags &= ~CEPH_MOUNT_OPT_NOPOOLPERM; + printk ("pool perm"); + break; + case Opt_nopoolperm: + fsopt->flags |= CEPH_MOUNT_OPT_NOPOOLPERM; + break; #ifdef CONFIG_CEPH_FS_POSIX_ACL case Opt_acl: fsopt->sb_flags |= MS_POSIXACL; @@ -436,6 +447,8 @@ static int ceph_show_options(struct seq_file *m, struct dentry *root) seq_puts(m, ",nodcache"); if (fsopt->flags & CEPH_MOUNT_OPT_FSCACHE) seq_puts(m, ",fsc"); + if (fsopt->flags & CEPH_MOUNT_OPT_NOPOOLPERM) + seq_puts(m, ",nopoolperm"); #ifdef CONFIG_CEPH_FS_POSIX_ACL if (fsopt->sb_flags & MS_POSIXACL) diff --git a/fs/ceph/super.h b/fs/ceph/super.h index fa20e13..18b917c 100644 --- a/fs/ceph/super.h +++ b/fs/ceph/super.h @@ -35,6 +35,7 @@ #define CEPH_MOUNT_OPT_INO32 (1<<8) /* 32 bit inos */ #define CEPH_MOUNT_OPT_DCACHE (1<<9) /* use dcache for readdir etc */ #define CEPH_MOUNT_OPT_FSCACHE (1<<10) /* use fscache */ +#define CEPH_MOUNT_OPT_NOPOOLPERM (1<<11) /* no pool permission check */ #define CEPH_MOUNT_OPT_DEFAULT (CEPH_MOUNT_OPT_RBYTES | \ CEPH_MOUNT_OPT_DCACHE) @@ -438,10 +439,14 @@ static inline struct inode *ceph_find_inode(struct super_block *sb, /* * Ceph inode. */ -#define CEPH_I_DIR_ORDERED 1 /* dentries in dir are ordered */ -#define CEPH_I_NODELAY 4 /* do not delay cap release */ -#define CEPH_I_FLUSH 8 /* do not delay flush of dirty metadata */ -#define CEPH_I_NOFLUSH 16 /* do not flush dirty caps */ +#define CEPH_I_DIR_ORDERED (1 << 0) /* dentries in dir are ordered */ +#define CEPH_I_NODELAY (1 << 1) /* do not delay cap release */ +#define CEPH_I_FLUSH (1 << 2) /* do not delay flush of dirty metadata */ +#define CEPH_I_NOFLUSH (1 << 3) /* do not flush dirty caps */ +#define CEPH_I_POOL_PERM (1 << 4) /* pool rd/wr bits are valid */ +#define CEPH_I_POOL_RD (1 << 5) /* can read from pool */ +#define CEPH_I_POOL_WR (1 << 6) /* can write to pool */ + static inline void __ceph_dir_set_complete(struct ceph_inode_info *ci, int release_count, int ordered_count) @@ -879,6 +884,9 @@ extern void ceph_put_fmode(struct ceph_inode_info *ci, int mode); /* addr.c */ extern const struct address_space_operations ceph_aops; extern int ceph_mmap(struct file *file, struct vm_area_struct *vma); +extern int ceph_uninline_data(struct file *filp, struct page *locked_page); +extern int ceph_pool_perm_check(struct ceph_inode_info *ci, int need); +extern void ceph_pool_perm_destroy(struct ceph_mds_client* mdsc); /* file.c */ extern const struct file_operations ceph_file_fops; @@ -890,7 +898,6 @@ extern int ceph_atomic_open(struct inode *dir, struct dentry *dentry, extern int ceph_release(struct inode *inode, struct file *filp); extern void ceph_fill_inline_data(struct inode *inode, struct page *locked_page, char *data, size_t len); -int ceph_uninline_data(struct file *filp, struct page *locked_page); /* dir.c */ extern const struct file_operations ceph_dir_fops; extern const struct file_operations ceph_snapdir_fops; |
