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-rw-r--r--sys/gnu/fs/xfs/xfs_dir2.c851
1 files changed, 0 insertions, 851 deletions
diff --git a/sys/gnu/fs/xfs/xfs_dir2.c b/sys/gnu/fs/xfs/xfs_dir2.c
deleted file mode 100644
index 12ee653..0000000
--- a/sys/gnu/fs/xfs/xfs_dir2.c
+++ /dev/null
@@ -1,851 +0,0 @@
-/*
- * Copyright (c) 2000-2001,2005 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_bit.h"
-#include "xfs_log.h"
-#include "xfs_inum.h"
-#include "xfs_trans.h"
-#include "xfs_sb.h"
-#include "xfs_ag.h"
-#include "xfs_dir.h"
-#include "xfs_dir2.h"
-#include "xfs_dmapi.h"
-#include "xfs_mount.h"
-#include "xfs_da_btree.h"
-#include "xfs_bmap_btree.h"
-#include "xfs_alloc_btree.h"
-#include "xfs_dir_sf.h"
-#include "xfs_dir2_sf.h"
-#include "xfs_attr_sf.h"
-#include "xfs_dinode.h"
-#include "xfs_inode.h"
-#include "xfs_inode_item.h"
-#include "xfs_bmap.h"
-#include "xfs_dir_leaf.h"
-#include "xfs_dir2_data.h"
-#include "xfs_dir2_leaf.h"
-#include "xfs_dir2_block.h"
-#include "xfs_dir2_node.h"
-#include "xfs_dir2_trace.h"
-#include "xfs_error.h"
-
-/*
- * Declarations for interface routines.
- */
-static void xfs_dir2_mount(xfs_mount_t *mp);
-static int xfs_dir2_isempty(xfs_inode_t *dp);
-static int xfs_dir2_init(xfs_trans_t *tp, xfs_inode_t *dp,
- xfs_inode_t *pdp);
-static int xfs_dir2_createname(xfs_trans_t *tp, xfs_inode_t *dp,
- char *name, int namelen, xfs_ino_t inum,
- xfs_fsblock_t *first,
- xfs_bmap_free_t *flist, xfs_extlen_t total);
-static int xfs_dir2_lookup(xfs_trans_t *tp, xfs_inode_t *dp, char *name,
- int namelen, xfs_ino_t *inum);
-static int xfs_dir2_removename(xfs_trans_t *tp, xfs_inode_t *dp,
- char *name, int namelen, xfs_ino_t ino,
- xfs_fsblock_t *first,
- xfs_bmap_free_t *flist, xfs_extlen_t total);
-static int xfs_dir2_getdents(xfs_trans_t *tp, xfs_inode_t *dp, uio_t *uio,
- int *eofp);
-static int xfs_dir2_replace(xfs_trans_t *tp, xfs_inode_t *dp, char *name,
- int namelen, xfs_ino_t inum,
- xfs_fsblock_t *first, xfs_bmap_free_t *flist,
- xfs_extlen_t total);
-static int xfs_dir2_canenter(xfs_trans_t *tp, xfs_inode_t *dp, char *name,
- int namelen);
-static int xfs_dir2_shortform_validate_ondisk(xfs_mount_t *mp,
- xfs_dinode_t *dip);
-
-/*
- * Utility routine declarations.
- */
-static int xfs_dir2_put_dirent64_direct(xfs_dir2_put_args_t *pa);
-static int xfs_dir2_put_dirent64_uio(xfs_dir2_put_args_t *pa);
-
-/*
- * Directory operations vector.
- */
-xfs_dirops_t xfsv2_dirops = {
- .xd_mount = xfs_dir2_mount,
- .xd_isempty = xfs_dir2_isempty,
- .xd_init = xfs_dir2_init,
- .xd_createname = xfs_dir2_createname,
- .xd_lookup = xfs_dir2_lookup,
- .xd_removename = xfs_dir2_removename,
- .xd_getdents = xfs_dir2_getdents,
- .xd_replace = xfs_dir2_replace,
- .xd_canenter = xfs_dir2_canenter,
- .xd_shortform_validate_ondisk = xfs_dir2_shortform_validate_ondisk,
- .xd_shortform_to_single = xfs_dir2_sf_to_block,
-};
-
-/*
- * Interface routines.
- */
-
-/*
- * Initialize directory-related fields in the mount structure.
- */
-static void
-xfs_dir2_mount(
- xfs_mount_t *mp) /* filesystem mount point */
-{
- mp->m_dirversion = 2;
- ASSERT((1 << (mp->m_sb.sb_blocklog + mp->m_sb.sb_dirblklog)) <=
- XFS_MAX_BLOCKSIZE);
- mp->m_dirblksize = 1 << (mp->m_sb.sb_blocklog + mp->m_sb.sb_dirblklog);
- mp->m_dirblkfsbs = 1 << mp->m_sb.sb_dirblklog;
- 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);
- mp->m_dir_magicpct = (mp->m_dirblksize * 37) / 100;
-}
-
-/*
- * Return 1 if directory contains only "." and "..".
- */
-static int /* return code */
-xfs_dir2_isempty(
- xfs_inode_t *dp) /* incore inode structure */
-{
- xfs_dir2_sf_t *sfp; /* shortform directory structure */
-
- ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR);
- /*
- * Might happen during shutdown.
- */
- if (dp->i_d.di_size == 0) {
- return 1;
- }
- if (dp->i_d.di_size > XFS_IFORK_DSIZE(dp))
- return 0;
- sfp = (xfs_dir2_sf_t *)dp->i_df.if_u1.if_data;
- return !sfp->hdr.count;
-}
-
-/*
- * Initialize a directory with its "." and ".." entries.
- */
-static int /* error */
-xfs_dir2_init(
- xfs_trans_t *tp, /* transaction pointer */
- xfs_inode_t *dp, /* incore directory inode */
- xfs_inode_t *pdp) /* incore parent directory inode */
-{
- xfs_da_args_t args; /* operation arguments */
- int error; /* error return value */
-
- memset((char *)&args, 0, sizeof(args));
- args.dp = dp;
- args.trans = tp;
- ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR);
- if ((error = xfs_dir_ino_validate(tp->t_mountp, pdp->i_ino))) {
- return error;
- }
- return xfs_dir2_sf_create(&args, pdp->i_ino);
-}
-
-/*
- Enter a name in a directory.
- */
-static int /* error */
-xfs_dir2_createname(
- xfs_trans_t *tp, /* transaction pointer */
- xfs_inode_t *dp, /* incore directory inode */
- char *name, /* new entry name */
- int namelen, /* new entry name length */
- xfs_ino_t inum, /* new entry inode number */
- xfs_fsblock_t *first, /* bmap's firstblock */
- xfs_bmap_free_t *flist, /* bmap's freeblock list */
- xfs_extlen_t total) /* bmap's total block count */
-{
- xfs_da_args_t args; /* operation arguments */
- int rval; /* return value */
- int v; /* type-checking value */
-
- ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR);
- if ((rval = xfs_dir_ino_validate(tp->t_mountp, inum))) {
- return rval;
- }
- XFS_STATS_INC(xs_dir_create);
- /*
- * Fill in the arg structure for this request.
- */
- args.name = name;
- args.namelen = namelen;
- args.hashval = xfs_da_hashname(name, namelen);
- args.inumber = inum;
- args.dp = dp;
- args.firstblock = first;
- args.flist = flist;
- args.total = total;
- args.whichfork = XFS_DATA_FORK;
- args.trans = tp;
- args.justcheck = 0;
- args.addname = args.oknoent = 1;
- /*
- * Decide on what work routines to call based on the inode size.
- */
- if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL)
- rval = xfs_dir2_sf_addname(&args);
- else if ((rval = xfs_dir2_isblock(tp, dp, &v))) {
- return rval;
- } else if (v)
- rval = xfs_dir2_block_addname(&args);
- else if ((rval = xfs_dir2_isleaf(tp, dp, &v))) {
- return rval;
- } else if (v)
- rval = xfs_dir2_leaf_addname(&args);
- else
- rval = xfs_dir2_node_addname(&args);
- return rval;
-}
-
-/*
- * Lookup a name in a directory, give back the inode number.
- */
-static int /* error */
-xfs_dir2_lookup(
- xfs_trans_t *tp, /* transaction pointer */
- xfs_inode_t *dp, /* incore directory inode */
- char *name, /* lookup name */
- int namelen, /* lookup name length */
- xfs_ino_t *inum) /* out: inode number */
-{
- xfs_da_args_t args; /* operation arguments */
- int rval; /* return value */
- int v; /* type-checking value */
-
- ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR);
- XFS_STATS_INC(xs_dir_lookup);
-
- /*
- * Fill in the arg structure for this request.
- */
- args.name = name;
- args.namelen = namelen;
- args.hashval = xfs_da_hashname(name, namelen);
- args.inumber = 0;
- args.dp = dp;
- args.firstblock = NULL;
- args.flist = NULL;
- args.total = 0;
- args.whichfork = XFS_DATA_FORK;
- args.trans = tp;
- args.justcheck = args.addname = 0;
- args.oknoent = 1;
- /*
- * Decide on what work routines to call based on the inode size.
- */
- if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL)
- rval = xfs_dir2_sf_lookup(&args);
- else if ((rval = xfs_dir2_isblock(tp, dp, &v))) {
- return rval;
- } else if (v)
- rval = xfs_dir2_block_lookup(&args);
- else if ((rval = xfs_dir2_isleaf(tp, dp, &v))) {
- return rval;
- } else if (v)
- rval = xfs_dir2_leaf_lookup(&args);
- else
- rval = xfs_dir2_node_lookup(&args);
- if (rval == EEXIST)
- rval = 0;
- if (rval == 0)
- *inum = args.inumber;
- return rval;
-}
-
-/*
- * Remove an entry from a directory.
- */
-static int /* error */
-xfs_dir2_removename(
- xfs_trans_t *tp, /* transaction pointer */
- xfs_inode_t *dp, /* incore directory inode */
- char *name, /* name of entry to remove */
- int namelen, /* name length of entry to remove */
- xfs_ino_t ino, /* inode number of entry to remove */
- xfs_fsblock_t *first, /* bmap's firstblock */
- xfs_bmap_free_t *flist, /* bmap's freeblock list */
- xfs_extlen_t total) /* bmap's total block count */
-{
- xfs_da_args_t args; /* operation arguments */
- int rval; /* return value */
- int v; /* type-checking value */
-
- ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR);
- XFS_STATS_INC(xs_dir_remove);
- /*
- * Fill in the arg structure for this request.
- */
- args.name = name;
- args.namelen = namelen;
- args.hashval = xfs_da_hashname(name, namelen);
- args.inumber = ino;
- args.dp = dp;
- args.firstblock = first;
- args.flist = flist;
- args.total = total;
- args.whichfork = XFS_DATA_FORK;
- args.trans = tp;
- args.justcheck = args.addname = args.oknoent = 0;
- /*
- * Decide on what work routines to call based on the inode size.
- */
- if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL)
- rval = xfs_dir2_sf_removename(&args);
- else if ((rval = xfs_dir2_isblock(tp, dp, &v))) {
- return rval;
- } else if (v)
- rval = xfs_dir2_block_removename(&args);
- else if ((rval = xfs_dir2_isleaf(tp, dp, &v))) {
- return rval;
- } else if (v)
- rval = xfs_dir2_leaf_removename(&args);
- else
- rval = xfs_dir2_node_removename(&args);
- return rval;
-}
-
-/*
- * Read a directory.
- */
-static int /* error */
-xfs_dir2_getdents(
- xfs_trans_t *tp, /* transaction pointer */
- xfs_inode_t *dp, /* incore directory inode */
- uio_t *uio, /* caller's buffer control */
- int *eofp) /* out: eof reached */
-{
- int alignment; /* alignment required for ABI */
- xfs_dirent_t *dbp; /* malloc'ed buffer */
- xfs_dir2_put_t put; /* entry formatting routine */
- int rval; /* return value */
- int v; /* type-checking value */
-
- ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR);
- XFS_STATS_INC(xs_dir_getdents);
- /*
- * If our caller has given us a single contiguous aligned memory buffer,
- * just work directly within that buffer. If it's in user memory,
- * lock it down first.
- */
- alignment = sizeof(xfs_off_t) - 1;
- if ((uio->uio_iovcnt == 1) &&
- (((__psint_t)uio->uio_iov[0].iov_base & alignment) == 0) &&
- ((uio->uio_iov[0].iov_len & alignment) == 0)) {
- dbp = NULL;
- put = xfs_dir2_put_dirent64_direct;
- } else {
- dbp = kmem_alloc(sizeof(*dbp) + MAXNAMELEN, KM_SLEEP);
- put = xfs_dir2_put_dirent64_uio;
- }
-
- *eofp = 0;
- /*
- * Decide on what work routines to call based on the inode size.
- */
- if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL)
- rval = xfs_dir2_sf_getdents(dp, uio, eofp, dbp, put);
- else if ((rval = xfs_dir2_isblock(tp, dp, &v))) {
- ;
- } else if (v)
- rval = xfs_dir2_block_getdents(tp, dp, uio, eofp, dbp, put);
- else
- rval = xfs_dir2_leaf_getdents(tp, dp, uio, eofp, dbp, put);
- if (dbp != NULL)
- kmem_free(dbp, sizeof(*dbp) + MAXNAMELEN);
- return rval;
-}
-
-/*
- * Replace the inode number of a directory entry.
- */
-static int /* error */
-xfs_dir2_replace(
- xfs_trans_t *tp, /* transaction pointer */
- xfs_inode_t *dp, /* incore directory inode */
- char *name, /* name of entry to replace */
- int namelen, /* name length of entry to replace */
- xfs_ino_t inum, /* new inode number */
- xfs_fsblock_t *first, /* bmap's firstblock */
- xfs_bmap_free_t *flist, /* bmap's freeblock list */
- xfs_extlen_t total) /* bmap's total block count */
-{
- xfs_da_args_t args; /* operation arguments */
- int rval; /* return value */
- int v; /* type-checking value */
-
- ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR);
-
- if ((rval = xfs_dir_ino_validate(tp->t_mountp, inum))) {
- return rval;
- }
- /*
- * Fill in the arg structure for this request.
- */
- args.name = name;
- args.namelen = namelen;
- args.hashval = xfs_da_hashname(name, namelen);
- args.inumber = inum;
- args.dp = dp;
- args.firstblock = first;
- args.flist = flist;
- args.total = total;
- args.whichfork = XFS_DATA_FORK;
- args.trans = tp;
- args.justcheck = args.addname = args.oknoent = 0;
- /*
- * Decide on what work routines to call based on the inode size.
- */
- if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL)
- rval = xfs_dir2_sf_replace(&args);
- else if ((rval = xfs_dir2_isblock(tp, dp, &v))) {
- return rval;
- } else if (v)
- rval = xfs_dir2_block_replace(&args);
- else if ((rval = xfs_dir2_isleaf(tp, dp, &v))) {
- return rval;
- } else if (v)
- rval = xfs_dir2_leaf_replace(&args);
- else
- rval = xfs_dir2_node_replace(&args);
- return rval;
-}
-
-/*
- * See if this entry can be added to the directory without allocating space.
- */
-static int /* error */
-xfs_dir2_canenter(
- xfs_trans_t *tp, /* transaction pointer */
- xfs_inode_t *dp, /* incore directory inode */
- char *name, /* name of entry to add */
- int namelen) /* name length of entry to add */
-{
- xfs_da_args_t args; /* operation arguments */
- int rval; /* return value */
- int v; /* type-checking value */
-
- ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR);
- /*
- * Fill in the arg structure for this request.
- */
- args.name = name;
- args.namelen = namelen;
- args.hashval = xfs_da_hashname(name, namelen);
- args.inumber = 0;
- args.dp = dp;
- args.firstblock = NULL;
- args.flist = NULL;
- args.total = 0;
- args.whichfork = XFS_DATA_FORK;
- args.trans = tp;
- args.justcheck = args.addname = args.oknoent = 1;
- /*
- * Decide on what work routines to call based on the inode size.
- */
- if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL)
- rval = xfs_dir2_sf_addname(&args);
- else if ((rval = xfs_dir2_isblock(tp, dp, &v))) {
- return rval;
- } else if (v)
- rval = xfs_dir2_block_addname(&args);
- else if ((rval = xfs_dir2_isleaf(tp, dp, &v))) {
- return rval;
- } else if (v)
- rval = xfs_dir2_leaf_addname(&args);
- else
- rval = xfs_dir2_node_addname(&args);
- return rval;
-}
-
-/*
- * Dummy routine for shortform inode validation.
- * Can't really do this.
- */
-/* ARGSUSED */
-static int /* error */
-xfs_dir2_shortform_validate_ondisk(
- xfs_mount_t *mp, /* filesystem mount point */
- xfs_dinode_t *dip) /* ondisk inode */
-{
- return 0;
-}
-
-/*
- * Utility routines.
- */
-
-/*
- * Add a block to the directory.
- * This routine is for data and free blocks, not leaf/node blocks
- * which are handled by xfs_da_grow_inode.
- */
-int /* error */
-xfs_dir2_grow_inode(
- xfs_da_args_t *args, /* operation arguments */
- int space, /* v2 dir's space XFS_DIR2_xxx_SPACE */
- xfs_dir2_db_t *dbp) /* out: block number added */
-{
- xfs_fileoff_t bno; /* directory offset of new block */
- int count; /* count of filesystem blocks */
- xfs_inode_t *dp; /* incore directory inode */
- int error; /* error return value */
- int got; /* blocks actually mapped */
- int i; /* temp mapping index */
- xfs_bmbt_irec_t map; /* single structure for bmap */
- int mapi; /* mapping index */
- xfs_bmbt_irec_t *mapp; /* bmap mapping structure(s) */
- xfs_mount_t *mp; /* filesystem mount point */
- int nmap; /* number of bmap entries */
- xfs_trans_t *tp; /* transaction pointer */
-
- xfs_dir2_trace_args_s("grow_inode", args, space);
- dp = args->dp;
- tp = args->trans;
- mp = dp->i_mount;
- /*
- * Set lowest possible block in the space requested.
- */
- bno = XFS_B_TO_FSBT(mp, space * XFS_DIR2_SPACE_SIZE);
- count = mp->m_dirblkfsbs;
- /*
- * Find the first hole for our block.
- */
- if ((error = xfs_bmap_first_unused(tp, dp, count, &bno, XFS_DATA_FORK))) {
- return error;
- }
- nmap = 1;
- ASSERT(args->firstblock != NULL);
- /*
- * Try mapping the new block contiguously (one extent).
- */
- if ((error = xfs_bmapi(tp, dp, bno, count,
- XFS_BMAPI_WRITE|XFS_BMAPI_METADATA|XFS_BMAPI_CONTIG,
- args->firstblock, args->total, &map, &nmap,
- args->flist, NULL))) {
- return error;
- }
- ASSERT(nmap <= 1);
- /*
- * Got it in 1.
- */
- if (nmap == 1) {
- mapp = &map;
- mapi = 1;
- }
- /*
- * Didn't work and this is a multiple-fsb directory block.
- * Try again with contiguous flag turned on.
- */
- else if (nmap == 0 && count > 1) {
- xfs_fileoff_t b; /* current file offset */
-
- /*
- * Space for maximum number of mappings.
- */
- mapp = kmem_alloc(sizeof(*mapp) * count, KM_SLEEP);
- /*
- * Iterate until we get to the end of our block.
- */
- for (b = bno, mapi = 0; b < bno + count; ) {
- int c; /* current fsb count */
-
- /*
- * Can't map more than MAX_NMAP at once.
- */
- nmap = MIN(XFS_BMAP_MAX_NMAP, count);
- c = (int)(bno + count - b);
- if ((error = xfs_bmapi(tp, dp, b, c,
- XFS_BMAPI_WRITE|XFS_BMAPI_METADATA,
- args->firstblock, args->total,
- &mapp[mapi], &nmap, args->flist,
- NULL))) {
- kmem_free(mapp, sizeof(*mapp) * count);
- return error;
- }
- if (nmap < 1)
- break;
- /*
- * Add this bunch into our table, go to the next offset.
- */
- mapi += nmap;
- b = mapp[mapi - 1].br_startoff +
- mapp[mapi - 1].br_blockcount;
- }
- }
- /*
- * Didn't work.
- */
- else {
- mapi = 0;
- mapp = NULL;
- }
- /*
- * See how many fsb's we got.
- */
- for (i = 0, got = 0; i < mapi; i++)
- got += mapp[i].br_blockcount;
- /*
- * Didn't get enough fsb's, or the first/last block's are wrong.
- */
- if (got != count || mapp[0].br_startoff != bno ||
- mapp[mapi - 1].br_startoff + mapp[mapi - 1].br_blockcount !=
- bno + count) {
- if (mapp != &map)
- kmem_free(mapp, sizeof(*mapp) * count);
- return XFS_ERROR(ENOSPC);
- }
- /*
- * Done with the temporary mapping table.
- */
- if (mapp != &map)
- kmem_free(mapp, sizeof(*mapp) * count);
- *dbp = XFS_DIR2_DA_TO_DB(mp, (xfs_dablk_t)bno);
- /*
- * Update file's size if this is the data space and it grew.
- */
- if (space == XFS_DIR2_DATA_SPACE) {
- xfs_fsize_t size; /* directory file (data) size */
-
- size = XFS_FSB_TO_B(mp, bno + count);
- if (size > dp->i_d.di_size) {
- dp->i_d.di_size = size;
- xfs_trans_log_inode(tp, dp, XFS_ILOG_CORE);
- }
- }
- return 0;
-}
-
-/*
- * See if the directory is a single-block form directory.
- */
-int /* error */
-xfs_dir2_isblock(
- xfs_trans_t *tp, /* transaction pointer */
- xfs_inode_t *dp, /* incore directory inode */
- int *vp) /* out: 1 is block, 0 is not block */
-{
- xfs_fileoff_t last; /* last file offset */
- xfs_mount_t *mp; /* filesystem mount point */
- int rval; /* return value */
-
- mp = dp->i_mount;
- if ((rval = xfs_bmap_last_offset(tp, dp, &last, XFS_DATA_FORK))) {
- return rval;
- }
- rval = XFS_FSB_TO_B(mp, last) == mp->m_dirblksize;
- ASSERT(rval == 0 || dp->i_d.di_size == mp->m_dirblksize);
- *vp = rval;
- return 0;
-}
-
-/*
- * See if the directory is a single-leaf form directory.
- */
-int /* error */
-xfs_dir2_isleaf(
- xfs_trans_t *tp, /* transaction pointer */
- xfs_inode_t *dp, /* incore directory inode */
- int *vp) /* out: 1 is leaf, 0 is not leaf */
-{
- xfs_fileoff_t last; /* last file offset */
- xfs_mount_t *mp; /* filesystem mount point */
- int rval; /* return value */
-
- mp = dp->i_mount;
- if ((rval = xfs_bmap_last_offset(tp, dp, &last, XFS_DATA_FORK))) {
- return rval;
- }
- *vp = last == mp->m_dirleafblk + (1 << mp->m_sb.sb_dirblklog);
- return 0;
-}
-
-/*
- * Getdents put routine for 64-bit ABI, direct form.
- */
-static int /* error */
-xfs_dir2_put_dirent64_direct(
- xfs_dir2_put_args_t *pa) /* argument bundle */
-{
- struct dirent *idbp, dtmp; /* dirent pointer */
- iovec_t *iovp; /* io vector */
- int namelen; /* entry name length */
- int reclen; /* entry total length */
- uio_t *uio; /* I/O control */
-
- namelen = pa->namelen;
-
- dtmp.d_namlen = namelen;
- dtmp.d_reclen = GENERIC_DIRSIZ(&dtmp);
- reclen = dtmp.d_reclen;
-
- uio = pa->uio;
- /*
- * Won't fit in the remaining space.
- */
- if (reclen > uio->uio_resid) {
- pa->done = 0;
- return 0;
- }
- iovp = uio->uio_iov;
- idbp = (struct dirent *)iovp->iov_base;
- iovp->iov_base = (char *)idbp + reclen;
- iovp->iov_len -= reclen;
- uio->uio_resid -= reclen;
- idbp->d_reclen = reclen;
- idbp->d_fileno = pa->ino;
- idbp->d_type = DT_UNKNOWN;
- idbp->d_namlen = namelen;
- memcpy(idbp->d_name, pa->name, namelen);
- idbp->d_name[namelen] = '\0';
- pa->done = 1;
- return 0;
-}
-
-/*
- * Getdents put routine for 64-bit ABI, uio form.
- */
-static int /* error */
-xfs_dir2_put_dirent64_uio(
- xfs_dir2_put_args_t *pa) /* argument bundle */
-{
- struct dirent *idbp, dtmp; /* dirent pointer */
- int namelen; /* entry name length */
- int reclen; /* entry total length */
- int rval; /* return value */
- uio_t *uio; /* I/O control */
-
- namelen = pa->namelen;
-
- dtmp.d_namlen = namelen;
- dtmp.d_reclen = GENERIC_DIRSIZ(&dtmp);
- reclen = dtmp.d_reclen;
-
- uio = pa->uio;
- /*
- * Won't fit in the remaining space.
- */
- if (reclen > uio->uio_resid) {
- pa->done = 0;
- return 0;
- }
- idbp = &dtmp;
- idbp->d_reclen = reclen;
- idbp->d_fileno = pa->ino;
- idbp->d_type = DT_UNKNOWN;
- idbp->d_namlen = namelen;
- memcpy(idbp->d_name, pa->name, namelen);
- idbp->d_name[namelen] = '\0';
- rval = uio_read((caddr_t)idbp, reclen, uio);
- pa->done = (rval == 0);
- return rval;
-}
-
-/*
- * Remove the given block from the directory.
- * This routine is used for data and free blocks, leaf/node are done
- * by xfs_da_shrink_inode.
- */
-int
-xfs_dir2_shrink_inode(
- xfs_da_args_t *args, /* operation arguments */
- xfs_dir2_db_t db, /* directory block number */
- xfs_dabuf_t *bp) /* block's buffer */
-{
- xfs_fileoff_t bno; /* directory file offset */
- xfs_dablk_t da; /* directory file offset */
- int done; /* bunmap is finished */
- xfs_inode_t *dp; /* incore directory inode */
- int error; /* error return value */
- xfs_mount_t *mp; /* filesystem mount point */
- xfs_trans_t *tp; /* transaction pointer */
-
- xfs_dir2_trace_args_db("shrink_inode", args, db, bp);
- dp = args->dp;
- mp = dp->i_mount;
- tp = args->trans;
- da = XFS_DIR2_DB_TO_DA(mp, db);
- /*
- * Unmap the fsblock(s).
- */
- if ((error = xfs_bunmapi(tp, dp, da, mp->m_dirblkfsbs,
- XFS_BMAPI_METADATA, 0, args->firstblock, args->flist,
- NULL, &done))) {
- /*
- * ENOSPC actually can happen if we're in a removename with
- * no space reservation, and the resulting block removal
- * would cause a bmap btree split or conversion from extents
- * to btree. This can only happen for un-fragmented
- * directory blocks, since you need to be punching out
- * the middle of an extent.
- * In this case we need to leave the block in the file,
- * and not binval it.
- * So the block has to be in a consistent empty state
- * and appropriately logged.
- * We don't free up the buffer, the caller can tell it
- * hasn't happened since it got an error back.
- */
- return error;
- }
- ASSERT(done);
- /*
- * Invalidate the buffer from the transaction.
- */
- xfs_da_binval(tp, bp);
- /*
- * If it's not a data block, we're done.
- */
- if (db >= XFS_DIR2_LEAF_FIRSTDB(mp))
- return 0;
- /*
- * If the block isn't the last one in the directory, we're done.
- */
- if (dp->i_d.di_size > XFS_DIR2_DB_OFF_TO_BYTE(mp, db + 1, 0))
- return 0;
- bno = da;
- if ((error = xfs_bmap_last_before(tp, dp, &bno, XFS_DATA_FORK))) {
- /*
- * This can't really happen unless there's kernel corruption.
- */
- return error;
- }
- if (db == mp->m_dirdatablk)
- ASSERT(bno == 0);
- else
- ASSERT(bno > 0);
- /*
- * Set the size to the new last block.
- */
- dp->i_d.di_size = XFS_FSB_TO_B(mp, bno);
- xfs_trans_log_inode(tp, dp, XFS_ILOG_CORE);
- return 0;
-}
-
-
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