diff mbox

[05/17] xfs: get directory offset when adding directory name

Message ID 1507327548-3221-6-git-send-email-allison.henderson@oracle.com (mailing list archive)
State Superseded
Headers show

Commit Message

Allison Henderson Oct. 6, 2017, 10:05 p.m. UTC 
From: Mark Tinguely <tinguely@sgi.com>

Return the directory offset information when adding an entry to the
directory.

This offset will be used as the parent pointer offset in xfs_create,
xfs_symlink, xfs_link and xfs_rename.

[dchinner: forward ported and cleaned up]
[dchinner: no s-o-b from Mark]
[bfoster: rebased, use args->geo in dir code]
[achender: rebased, chaged __uint32_t to xfs_dir2_dataptr_t]

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Allison Henderson <allison.henderson@oracle.com>
---
:100644 100644 ae6de17... bce96d6... M	fs/xfs/libxfs/xfs_da_btree.h
:100644 100644 ccf9783... a1ca460... M	fs/xfs/libxfs/xfs_dir2.c
:100644 100644 21c8f8b... e349900... M	fs/xfs/libxfs/xfs_dir2.h
:100644 100644 915fa42... bcf3438... M	fs/xfs/libxfs/xfs_dir2_block.c
:100644 100644 bdc9068... c7c2d4d... M	fs/xfs/libxfs/xfs_dir2_leaf.c
:100644 100644 3c5de67... 44d10ee... M	fs/xfs/libxfs/xfs_dir2_node.c
:100644 100644 b4d31cb... e33fd12... M	fs/xfs/libxfs/xfs_dir2_sf.c
:100644 100644 16ee225... 8e02180... M	fs/xfs/xfs_inode.c
:100644 100644 68d3ca2... fc803ae... M	fs/xfs/xfs_symlink.c
 fs/xfs/libxfs/xfs_da_btree.h   | 1 +
 fs/xfs/libxfs/xfs_dir2.c       | 8 ++++++--
 fs/xfs/libxfs/xfs_dir2.h       | 3 ++-
 fs/xfs/libxfs/xfs_dir2_block.c | 1 +
 fs/xfs/libxfs/xfs_dir2_leaf.c  | 2 ++
 fs/xfs/libxfs/xfs_dir2_node.c  | 2 ++
 fs/xfs/libxfs/xfs_dir2_sf.c    | 2 ++
 fs/xfs/xfs_inode.c             | 9 +++++----
 fs/xfs/xfs_symlink.c           | 2 +-
 9 files changed, 22 insertions(+), 8 deletions(-)
diff mbox

Patch

diff --git a/fs/xfs/libxfs/xfs_da_btree.h b/fs/xfs/libxfs/xfs_da_btree.h
index ae6de17..bce96d6 100644
--- a/fs/xfs/libxfs/xfs_da_btree.h
+++ b/fs/xfs/libxfs/xfs_da_btree.h
@@ -86,6 +86,7 @@  typedef struct xfs_da_args {
 	int		rmtvaluelen2;	/* remote attr value length in bytes */
 	int		op_flags;	/* operation flags */
 	enum xfs_dacmp	cmpresult;	/* name compare result for lookups */
+	xfs_dir2_dataptr_t offset;	/* OUT: offset in directory */
 } xfs_da_args_t;
 
 /*
diff --git a/fs/xfs/libxfs/xfs_dir2.c b/fs/xfs/libxfs/xfs_dir2.c
index ccf9783..a1ca460 100644
--- a/fs/xfs/libxfs/xfs_dir2.c
+++ b/fs/xfs/libxfs/xfs_dir2.c
@@ -268,7 +268,8 @@  xfs_dir_createname(
 	xfs_ino_t		inum,		/* new entry inode number */
 	xfs_fsblock_t		*first,		/* bmap's firstblock */
 	struct xfs_defer_ops	*dfops,		/* bmap's freeblock list */
-	xfs_extlen_t		total)		/* bmap's total block count */
+	xfs_extlen_t		total,		/* bmap's total block count */
+	xfs_dir2_dataptr_t	*offset)	/* OUT entry's dir offset */
 {
 	struct xfs_da_args	*args;
 	int			rval;
@@ -323,6 +324,9 @@  xfs_dir_createname(
 	else
 		rval = xfs_dir2_node_addname(args);
 
+	/* return the location that this entry was place in the parent inode */
+	if (offset)
+		*offset = args->offset;
 out_free:
 	kmem_free(args);
 	return rval;
@@ -570,7 +574,7 @@  xfs_dir_canenter(
 	xfs_inode_t	*dp,
 	struct xfs_name	*name)		/* name of entry to add */
 {
-	return xfs_dir_createname(tp, dp, name, 0, NULL, NULL, 0);
+	return xfs_dir_createname(tp, dp, name, 0, NULL, NULL, 0, NULL);
 }
 
 /*
diff --git a/fs/xfs/libxfs/xfs_dir2.h b/fs/xfs/libxfs/xfs_dir2.h
index 21c8f8b..e349900 100644
--- a/fs/xfs/libxfs/xfs_dir2.h
+++ b/fs/xfs/libxfs/xfs_dir2.h
@@ -131,7 +131,8 @@  extern int xfs_dir_init(struct xfs_trans *tp, struct xfs_inode *dp,
 extern int xfs_dir_createname(struct xfs_trans *tp, struct xfs_inode *dp,
 				struct xfs_name *name, xfs_ino_t inum,
 				xfs_fsblock_t *first,
-				struct xfs_defer_ops *dfops, xfs_extlen_t tot);
+				struct xfs_defer_ops *dfops, xfs_extlen_t tot,
+				xfs_dir2_dataptr_t *offset);
 extern int xfs_dir_lookup(struct xfs_trans *tp, struct xfs_inode *dp,
 				struct xfs_name *name, xfs_ino_t *inum,
 				struct xfs_name *ci_name);
diff --git a/fs/xfs/libxfs/xfs_dir2_block.c b/fs/xfs/libxfs/xfs_dir2_block.c
index 915fa42..bcf3438 100644
--- a/fs/xfs/libxfs/xfs_dir2_block.c
+++ b/fs/xfs/libxfs/xfs_dir2_block.c
@@ -554,6 +554,7 @@  xfs_dir2_block_addname(
 	dp->d_ops->data_put_ftype(dep, args->filetype);
 	tagp = dp->d_ops->data_entry_tag_p(dep);
 	*tagp = cpu_to_be16((char *)dep - (char *)hdr);
+	args->offset = xfs_dir2_byte_to_dataptr((char *)dep - (char *)hdr);
 	/*
 	 * Clean up the bestfree array and log the header, tail, and entry.
 	 */
diff --git a/fs/xfs/libxfs/xfs_dir2_leaf.c b/fs/xfs/libxfs/xfs_dir2_leaf.c
index bdc9068..c7c2d4d 100644
--- a/fs/xfs/libxfs/xfs_dir2_leaf.c
+++ b/fs/xfs/libxfs/xfs_dir2_leaf.c
@@ -882,6 +882,8 @@  xfs_dir2_leaf_addname(
 	dp->d_ops->data_put_ftype(dep, args->filetype);
 	tagp = dp->d_ops->data_entry_tag_p(dep);
 	*tagp = cpu_to_be16((char *)dep - (char *)hdr);
+	args->offset = xfs_dir2_db_off_to_dataptr(args->geo, use_block,
+						(char *)dep - (char *)hdr);
 	/*
 	 * Need to scan fix up the bestfree table.
 	 */
diff --git a/fs/xfs/libxfs/xfs_dir2_node.c b/fs/xfs/libxfs/xfs_dir2_node.c
index 3c5de67..44d10ee 100644
--- a/fs/xfs/libxfs/xfs_dir2_node.c
+++ b/fs/xfs/libxfs/xfs_dir2_node.c
@@ -2027,6 +2027,8 @@  xfs_dir2_node_addname_int(
 	dp->d_ops->data_put_ftype(dep, args->filetype);
 	tagp = dp->d_ops->data_entry_tag_p(dep);
 	*tagp = cpu_to_be16((char *)dep - (char *)hdr);
+	args->offset = xfs_dir2_db_off_to_dataptr(args->geo, dbno,
+						  (char *)dep - (char *)hdr);
 	xfs_dir2_data_log_entry(args, dbp, dep);
 	/*
 	 * Rescan the block for bestfree if needed.
diff --git a/fs/xfs/libxfs/xfs_dir2_sf.c b/fs/xfs/libxfs/xfs_dir2_sf.c
index b4d31cb..e33fd12 100644
--- a/fs/xfs/libxfs/xfs_dir2_sf.c
+++ b/fs/xfs/libxfs/xfs_dir2_sf.c
@@ -407,6 +407,7 @@  xfs_dir2_sf_addname_easy(
 	memcpy(sfep->name, args->name, sfep->namelen);
 	dp->d_ops->sf_put_ino(sfp, sfep, args->inumber);
 	dp->d_ops->sf_put_ftype(sfep, args->filetype);
+	args->offset = xfs_dir2_byte_to_dataptr(offset);
 
 	/*
 	 * Update the header and inode.
@@ -498,6 +499,7 @@  xfs_dir2_sf_addname_hard(
 	memcpy(sfep->name, args->name, sfep->namelen);
 	dp->d_ops->sf_put_ino(sfp, sfep, args->inumber);
 	dp->d_ops->sf_put_ftype(sfep, args->filetype);
+	args->offset = xfs_dir2_byte_to_dataptr(offset);
 	sfp->count++;
 	if (args->inumber > XFS_DIR2_MAX_SHORT_INUM && !objchange)
 		sfp->i8count++;
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index 16ee225..8e02180 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -1252,7 +1252,8 @@  xfs_create(
 
 	error = xfs_dir_createname(tp, dp, name, ip->i_ino,
 					&first_block, &dfops, resblks ?
-					resblks - XFS_IALLOC_SPACE_RES(mp) : 0);
+					resblks - XFS_IALLOC_SPACE_RES(mp) : 0,
+					NULL);
 	if (error) {
 		ASSERT(error != -ENOSPC);
 		goto out_trans_cancel;
@@ -1495,7 +1496,7 @@  xfs_link(
 	}
 
 	error = xfs_dir_createname(tp, tdp, target_name, sip->i_ino,
-					&first_block, &dfops, resblks);
+				   &first_block, &dfops, resblks, NULL);
 	if (error)
 		goto error_return;
 	xfs_trans_ichgtime(tp, tdp, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
@@ -3031,8 +3032,8 @@  xfs_rename(
 		 * to account for the ".." reference from the new entry.
 		 */
 		error = xfs_dir_createname(tp, target_dp, target_name,
-						src_ip->i_ino, &first_block,
-						&dfops, spaceres);
+					   src_ip->i_ino, &first_block, &dfops,
+					   spaceres, NULL);
 		if (error)
 			goto out_bmap_cancel;
 
diff --git a/fs/xfs/xfs_symlink.c b/fs/xfs/xfs_symlink.c
index 68d3ca2..fc803ae 100644
--- a/fs/xfs/xfs_symlink.c
+++ b/fs/xfs/xfs_symlink.c
@@ -363,7 +363,7 @@  xfs_symlink(
 	 * Create the directory entry for the symlink.
 	 */
 	error = xfs_dir_createname(tp, dp, link_name, ip->i_ino,
-					&first_block, &dfops, resblks);
+				   &first_block, &dfops, resblks, NULL);
 	if (error)
 		goto out_bmap_cancel;
 	xfs_trans_ichgtime(tp, dp, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);