/*
 * Check consistency of shortform directory, assert if bad.
 */
static void
xfs_dir2_sf_check(
	xfs_da_args_t		*args)		/* operation arguments */
{
	xfs_inode_t		*dp;		/* incore directory inode */
	int			i;		/* entry number */
	int			i8count;	/* number of big inode#s */
	xfs_ino_t		ino;		/* entry inode number */
	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(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_dir3_sf_nextentry(mp, sfp, sfep)) {
		ASSERT(xfs_dir2_sf_get_offset(sfep) >= offset);
		ino = xfs_dir3_sfe_get_ino(mp, sfp, sfep);
		i8count += ino > XFS_DIR2_MAX_SHORT_INUM;
		offset =
			xfs_dir2_sf_get_offset(sfep) +
			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) <= mp->m_dirblksize);
}
/*
 * Replace the inode number of an entry in a shortform directory.
 */
int						/* error */
xfs_dir2_sf_replace(
	xfs_da_args_t		*args)		/* operation arguments */
{
	xfs_inode_t		*dp;		/* incore directory inode */
	int			i;		/* entry index */
#if XFS_BIG_INUMS || defined(DEBUG)
	xfs_ino_t		ino=0;		/* entry old inode number */
#endif
#if XFS_BIG_INUMS
	int			i8elevated;	/* sf_toino8 set i8count=1 */
#endif
	xfs_dir2_sf_entry_t	*sfep;		/* shortform directory entry */
	xfs_dir2_sf_hdr_t	*sfp;		/* shortform structure */

	trace_xfs_dir2_sf_replace(args);

	dp = args->dp;

	ASSERT(dp->i_df.if_flags & XFS_IFINLINE);
	/*
	 * Bail out if the shortform directory is way too small.
	 */
	if (dp->i_d.di_size < offsetof(xfs_dir2_sf_hdr_t, parent)) {
		ASSERT(XFS_FORCED_SHUTDOWN(dp->i_mount));
		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 XFS_BIG_INUMS
	/*
	 * New inode number is large, and need to convert to 8-byte inodes.
	 */
	if (args->inumber > XFS_DIR2_MAX_SHORT_INUM && sfp->i8count == 0) {
		int	error;			/* error return value */
		int	newsize;		/* new inode size */

		newsize =
			dp->i_df.if_bytes +
			(sfp->count + 1) *
			((uint)sizeof(xfs_dir2_ino8_t) -
			 (uint)sizeof(xfs_dir2_ino4_t));
		/*
		 * Won't fit as shortform, convert to block then do replace.
		 */
		if (newsize > XFS_IFORK_DSIZE(dp)) {
			error = xfs_dir2_sf_to_block(args);
			if (error) {
				return error;
			}
			return xfs_dir2_block_replace(args);
		}
		/*
		 * Still fits, convert to 8-byte now.
		 */
		xfs_dir2_sf_toino8(args);
		i8elevated = 1;
		sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data;
	} else
		i8elevated = 0;
#endif
	ASSERT(args->namelen != 1 || args->name[0] != '.');
	/*
	 * Replace ..'s entry.
	 */
	if (args->namelen == 2 &&
	    args->name[0] == '.' && args->name[1] == '.') {
#if XFS_BIG_INUMS || defined(DEBUG)
		ino = xfs_dir2_sf_get_parent_ino(sfp);
		ASSERT(args->inumber != ino);
#endif
		xfs_dir2_sf_put_parent_ino(sfp, args->inumber);
	}
	/*
	 * Normal entry, look for the name.
	 */
	else {
		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_dir3_sfe_get_ino(dp->i_mount,
							   sfp, sfep);
				ASSERT(args->inumber != ino);
#endif
				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;
			}
		}
		/*
		 * Didn't find it.
		 */
		if (i == sfp->count) {
			ASSERT(args->op_flags & XFS_DA_OP_OKNOENT);
#if XFS_BIG_INUMS
			if (i8elevated)
				xfs_dir2_sf_toino4(args);
#endif
			return XFS_ERROR(ENOENT);
		}
	}
#if XFS_BIG_INUMS
	/*
	 * See if the old number was large, the new number is small.
	 */
	if (ino > XFS_DIR2_MAX_SHORT_INUM &&
	    args->inumber <= XFS_DIR2_MAX_SHORT_INUM) {
		/*
		 * And the old count was one, so need to convert to small.
		 */
		if (sfp->i8count == 1)
			xfs_dir2_sf_toino4(args);
		else
			sfp->i8count--;
	}
	/*
	 * See if the old number was small, the new number is large.
	 */
	if (ino <= XFS_DIR2_MAX_SHORT_INUM &&
	    args->inumber > XFS_DIR2_MAX_SHORT_INUM) {
		/*
		 * add to the i8count unless we just converted to 8-byte
		 * inodes (which does an implied i8count = 1)
		 */
		ASSERT(sfp->i8count != 0);
		if (!i8elevated)
			sfp->i8count++;
	}
#endif
	xfs_dir2_sf_check(args);
	xfs_trans_log_inode(args->trans, dp, XFS_ILOG_DDATA);
	return 0;
}
/*
 * Remove an entry from a shortform directory.
 */
int						/* error */
xfs_dir2_sf_removename(
	xfs_da_args_t		*args)
{
	int			byteoff;	/* offset of removed entry */
	xfs_inode_t		*dp;		/* incore directory inode */
	int			entsize;	/* this entry's size */
	int			i;		/* shortform entry index */
	int			newsize;	/* new inode size */
	int			oldsize;	/* old inode size */
	xfs_dir2_sf_entry_t	*sfep;		/* shortform directory entry */
	xfs_dir2_sf_hdr_t	*sfp;		/* shortform structure */

	trace_xfs_dir2_sf_removename(args);

	dp = args->dp;

	ASSERT(dp->i_df.if_flags & XFS_IFINLINE);
	oldsize = (int)dp->i_d.di_size;
	/*
	 * Bail out if the directory is way too short.
	 */
	if (oldsize < offsetof(xfs_dir2_sf_hdr_t, parent)) {
		ASSERT(XFS_FORCED_SHUTDOWN(dp->i_mount));
		return XFS_ERROR(EIO);
	}
	ASSERT(dp->i_df.if_bytes == oldsize);
	ASSERT(dp->i_df.if_u1.if_data != NULL);
	sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data;
	ASSERT(oldsize >= xfs_dir2_sf_hdr_size(sfp->i8count));
	/*
	 * Loop over the old directory entries.
	 * Find the one we're deleting.
	 */
	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) {
			ASSERT(xfs_dir3_sfe_get_ino(dp->i_mount, sfp, sfep) ==
			       args->inumber);
			break;
		}
	}
	/*
	 * Didn't find it.
	 */
	if (i == sfp->count)
		return XFS_ERROR(ENOENT);
	/*
	 * Calculate sizes.
	 */
	byteoff = (int)((char *)sfep - (char *)sfp);
	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.
	 */
	if (byteoff + entsize < oldsize)
		memmove((char *)sfp + byteoff, (char *)sfp + byteoff + entsize,
			oldsize - (byteoff + entsize));
	/*
	 * Fix up the header and file size.
	 */
	sfp->count--;
	dp->i_d.di_size = newsize;
	/*
	 * Reallocate, making it smaller.
	 */
	xfs_idata_realloc(dp, newsize - oldsize, XFS_DATA_FORK);
	sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data;
#if XFS_BIG_INUMS
	/*
	 * Are we changing inode number size?
	 */
	if (args->inumber > XFS_DIR2_MAX_SHORT_INUM) {
		if (sfp->i8count == 1)
			xfs_dir2_sf_toino4(args);
		else
			sfp->i8count--;
	}
#endif
	xfs_dir2_sf_check(args);
	xfs_trans_log_inode(args->trans, dp, XFS_ILOG_CORE | XFS_ILOG_DDATA);
	return 0;
}
/*
 * Lookup an entry in a shortform directory.
 * Returns EEXIST if found, ENOENT if not found.
 */
int						/* error */
xfs_dir2_sf_lookup(
	xfs_da_args_t		*args)		/* operation arguments */
{
	xfs_inode_t		*dp;		/* incore directory inode */
	int			i;		/* entry index */
	int			error;
	xfs_dir2_sf_entry_t	*sfep;		/* shortform directory entry */
	xfs_dir2_sf_hdr_t	*sfp;		/* shortform structure */
	enum xfs_dacmp		cmp;		/* comparison result */
	xfs_dir2_sf_entry_t	*ci_sfep;	/* case-insens. entry */

	trace_xfs_dir2_sf_lookup(args);

	xfs_dir2_sf_check(args);
	dp = args->dp;

	ASSERT(dp->i_df.if_flags & XFS_IFINLINE);
	/*
	 * Bail out if the directory is way too short.
	 */
	if (dp->i_d.di_size < offsetof(xfs_dir2_sf_hdr_t, parent)) {
		ASSERT(XFS_FORCED_SHUTDOWN(dp->i_mount));
		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));
	/*
	 * Special case for .
	 */
	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);
	}
	/*
	 * Special case for ..
	 */
	if (args->namelen == 2 &&
	    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);
	}
	/*
	 * Loop over all the entries trying to match ours.
	 */
	ci_sfep = NULL;
	for (i = 0, sfep = xfs_dir2_sf_firstentry(sfp); i < sfp->count;
	     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
		 * inode number and continue looking for an exact match.
		 */
		cmp = dp->i_mount->m_dirnameops->compname(args, sfep->name,
								sfep->namelen);
		if (cmp != XFS_CMP_DIFFERENT && cmp != args->cmpresult) {
			args->cmpresult = cmp;
			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;
		}
	}
	ASSERT(args->op_flags & XFS_DA_OP_OKNOENT);
	/*
	 * Here, we can only be doing a lookup (not a rename or replace).
	 * If a case-insensitive match was not found, return ENOENT.
	 */
	if (!ci_sfep)
		return XFS_ERROR(ENOENT);
	/* otherwise process the CI match as required by the caller */
	error = xfs_dir_cilookup_result(args, ci_sfep->name, ci_sfep->namelen);
	return XFS_ERROR(error);
}
/*
 * Convert from 4-byte inode numbers to 8-byte inode numbers.
 * The new 8-byte inode number is not there yet, we leave with the
 * count 1 but no corresponding entry.
 */
static void
xfs_dir2_sf_toino8(
	xfs_da_args_t		*args)		/* operation arguments */
{
	char			*buf;		/* old dir's buffer */
	xfs_inode_t		*dp;		/* incore directory inode */
	int			i;		/* entry index */
	int			newsize;	/* new inode size */
	xfs_dir2_sf_entry_t	*oldsfep;	/* old sf entry */
	xfs_dir2_sf_hdr_t	*oldsfp;	/* old sf directory */
	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.
	 * Then nuke it from the inode, and add the new buffer to the inode.
	 * Don't want xfs_idata_realloc copying the data here.
	 */
	oldsize = dp->i_df.if_bytes;
	buf = kmem_alloc(oldsize, KM_SLEEP);
	oldsfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data;
	ASSERT(oldsfp->i8count == 0);
	memcpy(buf, oldsfp, oldsize);
	/*
	 * Compute the new inode size.
	 */
	newsize =
		oldsize +
		(oldsfp->count + 1) *
		((uint)sizeof(xfs_dir2_ino8_t) - (uint)sizeof(xfs_dir2_ino4_t));
	xfs_idata_realloc(dp, -oldsize, XFS_DATA_FORK);
	xfs_idata_realloc(dp, newsize, XFS_DATA_FORK);
	/*
	 * Reset our pointers, the data has moved.
	 */
	oldsfp = (xfs_dir2_sf_hdr_t *)buf;
	sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data;
	/*
	 * Fill in the new header.
	 */
	sfp->count = oldsfp->count;
	sfp->i8count = 1;
	xfs_dir2_sf_put_parent_ino(sfp, xfs_dir2_sf_get_parent_ino(oldsfp));
	/*
	 * Copy the entries field by field.
	 */
	for (i = 0, sfep = xfs_dir2_sf_firstentry(sfp),
		    oldsfep = xfs_dir2_sf_firstentry(oldsfp);
	     i < sfp->count;
	     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_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.
	 */
	kmem_free(buf);
	dp->i_d.di_size = newsize;
	xfs_trans_log_inode(args->trans, dp, XFS_ILOG_CORE | XFS_ILOG_DDATA);
}
Exemplo n.º 6
0
/*
 * Convert the shortform directory to block form.
 */
int						/* error */
xfs_dir2_sf_to_block(
	xfs_da_args_t		*args)		/* operation arguments */
{
	xfs_dir2_db_t		blkno;		/* dir-relative block # (0) */
	xfs_dir2_data_hdr_t	*hdr;		/* block header */
	xfs_dir2_leaf_entry_t	*blp;		/* block leaf entries */
	struct xfs_buf		*bp;		/* block buffer */
	xfs_dir2_block_tail_t	*btp;		/* block tail pointer */
	xfs_dir2_data_entry_t	*dep;		/* data entry pointer */
	xfs_inode_t		*dp;		/* incore directory inode */
	int			dummy;		/* trash */
	xfs_dir2_data_unused_t	*dup;		/* unused entry pointer */
	int			endoffset;	/* end of data objects */
	int			error;		/* error return value */
	int			i;		/* index */
	xfs_mount_t		*mp;		/* filesystem mount point */
	int			needlog;	/* need to log block header */
	int			needscan;	/* need to scan block freespc */
	int			newoffset;	/* offset from current entry */
	int			offset;		/* target block offset */
	xfs_dir2_sf_entry_t	*sfep;		/* sf entry pointer */
	xfs_dir2_sf_hdr_t	*oldsfp;	/* old shortform header  */
	xfs_dir2_sf_hdr_t	*sfp;		/* shortform header  */
	__be16			*tagp;		/* end of data entry */
	xfs_trans_t		*tp;		/* transaction pointer */
	struct xfs_name		name;
	struct xfs_ifork	*ifp;

	trace_xfs_dir2_sf_to_block(args);

	dp = args->dp;
	tp = args->trans;
	mp = dp->i_mount;
	ifp = XFS_IFORK_PTR(dp, XFS_DATA_FORK);
	ASSERT(ifp->if_flags & XFS_IFINLINE);
	/*
	 * Bomb out if the shortform 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);
	}

	oldsfp = (xfs_dir2_sf_hdr_t *)ifp->if_u1.if_data;

	ASSERT(ifp->if_bytes == dp->i_d.di_size);
	ASSERT(ifp->if_u1.if_data != NULL);
	ASSERT(dp->i_d.di_size >= xfs_dir2_sf_hdr_size(oldsfp->i8count));
	ASSERT(dp->i_d.di_nextents == 0);

	/*
	 * Copy the directory into a temporary buffer.
	 * Then pitch the incore inode data so we can make extents.
	 */
	sfp = kmem_alloc(ifp->if_bytes, KM_SLEEP);
	memcpy(sfp, oldsfp, ifp->if_bytes);

	xfs_idata_realloc(dp, -ifp->if_bytes, XFS_DATA_FORK);
	xfs_bmap_local_to_extents_empty(dp, XFS_DATA_FORK);
	dp->i_d.di_size = 0;

	/*
	 * Add block 0 to the inode.
	 */
	error = xfs_dir2_grow_inode(args, XFS_DIR2_DATA_SPACE, &blkno);
	if (error) {
		kmem_free(sfp);
		return error;
	}
	/*
	 * Initialize the data block, then convert it to block format.
	 */
	error = xfs_dir3_data_init(args, blkno, &bp);
	if (error) {
		kmem_free(sfp);
		return error;
	}
	xfs_dir3_block_init(mp, tp, bp, dp);
	hdr = bp->b_addr;

	/*
	 * Compute size of block "tail" area.
	 */
	i = (uint)sizeof(*btp) +
	    (sfp->count + 2) * (uint)sizeof(xfs_dir2_leaf_entry_t);
	/*
	 * The whole thing is initialized to free by the init routine.
	 * Say we're using the leaf and tail area.
	 */
	dup = xfs_dir3_data_unused_p(hdr);
	needlog = needscan = 0;
	xfs_dir2_data_use_free(tp, bp, dup, mp->m_dirblksize - i, i, &needlog,
		&needscan);
	ASSERT(needscan == 0);
	/*
	 * Fill in the tail.
	 */
	btp = xfs_dir2_block_tail_p(mp, hdr);
	btp->count = cpu_to_be32(sfp->count + 2);	/* ., .. */
	btp->stale = 0;
	blp = xfs_dir2_block_leaf_p(btp);
	endoffset = (uint)((char *)blp - (char *)hdr);
	/*
	 * Remove the freespace, we'll manage it.
	 */
	xfs_dir2_data_use_free(tp, bp, dup,
		(xfs_dir2_data_aoff_t)((char *)dup - (char *)hdr),
		be16_to_cpu(dup->length), &needlog, &needscan);
	/*
	 * Create entry for .
	 */
	dep = xfs_dir3_data_dot_entry_p(hdr);
	dep->inumber = cpu_to_be64(dp->i_ino);
	dep->namelen = 1;
	dep->name[0] = '.';
	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);
	blp[0].address = cpu_to_be32(xfs_dir2_byte_to_dataptr(mp,
				(char *)dep - (char *)hdr));
	/*
	 * Create entry for ..
	 */
	dep = xfs_dir3_data_dotdot_entry_p(hdr);
	dep->inumber = cpu_to_be64(xfs_dir2_sf_get_parent_ino(sfp));
	dep->namelen = 2;
	dep->name[0] = dep->name[1] = '.';
	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);
	blp[1].address = cpu_to_be32(xfs_dir2_byte_to_dataptr(mp,
				(char *)dep - (char *)hdr));
	offset = xfs_dir3_data_first_offset(hdr);
	/*
	 * Loop over existing entries, stuff them in.
	 */
	i = 0;
	if (!sfp->count)
		sfep = NULL;
	else
		sfep = xfs_dir2_sf_firstentry(sfp);
	/*
	 * Need to preserve the existing offset values in the sf directory.
	 * Insert holes (unused entries) where necessary.
	 */
	while (offset < endoffset) {
		/*
		 * sfep is null when we reach the end of the list.
		 */
		if (sfep == NULL)
			newoffset = endoffset;
		else
			newoffset = xfs_dir2_sf_get_offset(sfep);
		/*
		 * There should be a hole here, make one.
		 */
		if (offset < newoffset) {
			dup = (xfs_dir2_data_unused_t *)((char *)hdr + offset);
			dup->freetag = cpu_to_be16(XFS_DIR2_DATA_FREE_TAG);
			dup->length = cpu_to_be16(newoffset - offset);
			*xfs_dir2_data_unused_tag_p(dup) = cpu_to_be16(
				((char *)dup - (char *)hdr));
			xfs_dir2_data_log_unused(tp, bp, dup);
			xfs_dir2_data_freeinsert(hdr, dup, &dummy);
			offset += be16_to_cpu(dup->length);
			continue;
		}
		/*
		 * Copy a real entry.
		 */
		dep = (xfs_dir2_data_entry_t *)((char *)hdr + newoffset);
		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_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;
		name.len = sfep->namelen;
		blp[2 + i].hashval = cpu_to_be32(mp->m_dirnameops->
							hashname(&name));
		blp[2 + i].address = cpu_to_be32(xfs_dir2_byte_to_dataptr(mp,
						 (char *)dep - (char *)hdr));
		offset = (int)((char *)(tagp + 1) - (char *)hdr);
		if (++i == sfp->count)
			sfep = NULL;
		else
			sfep = xfs_dir3_sf_nextentry(mp, sfp, sfep);
	}
	/* Done with the temporary buffer */
	kmem_free(sfp);
	/*
	 * Sort the leaf entries by hash value.
	 */
	xfs_sort(blp, be32_to_cpu(btp->count), sizeof(*blp), xfs_dir2_block_sort);
	/*
	 * Log the leaf entry area and tail.
	 * Already logged the header in data_init, ignore needlog.
	 */
	ASSERT(needscan == 0);
	xfs_dir2_block_log_leaf(tp, bp, 0, be32_to_cpu(btp->count) - 1);
	xfs_dir2_block_log_tail(tp, bp);
	xfs_dir3_data_check(dp, bp);
	return 0;
}