Provide a way to check the shape and scrub the hashes and records
in a directory or extended attribute btree.
Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
---
libxfs/xfs_dir2_node.c | 28 ++++++++++++++++++++++++++++
libxfs/xfs_dir2_priv.h | 2 ++
2 files changed, 30 insertions(+)
diff --git a/libxfs/xfs_dir2_node.c b/libxfs/xfs_dir2_node.c
index b75b432..56f00f7 100644
--- a/libxfs/xfs_dir2_node.c
+++ b/libxfs/xfs_dir2_node.c
@@ -478,6 +478,34 @@ xfs_dir2_free_hdr_check(
* Stale entries are ok.
*/
xfs_dahash_t /* hash value */
+xfs_dir2_leaf1_lasthash(
+ struct xfs_inode *dp,
+ struct xfs_buf *bp, /* leaf buffer */
+ int *count) /* count of entries in leaf */
+{
+ struct xfs_dir2_leaf *leaf = bp->b_addr;
+ struct xfs_dir2_leaf_entry *ents;
+ struct xfs_dir3_icleaf_hdr leafhdr;
+
+ dp->d_ops->leaf_hdr_from_disk(&leafhdr, leaf);
+
+ ASSERT(leafhdr.magic == XFS_DIR2_LEAF1_MAGIC ||
+ leafhdr.magic == XFS_DIR3_LEAF1_MAGIC);
+
+ if (count)
+ *count = leafhdr.count;
+ if (!leafhdr.count)
+ return 0;
+
+ ents = dp->d_ops->leaf_ents_p(leaf);
+ return be32_to_cpu(ents[leafhdr.count - 1].hashval);
+}
+
+/*
+ * Return the last hash value in the leaf.
+ * Stale entries are ok.
+ */
+xfs_dahash_t /* hash value */
xfs_dir2_leafn_lasthash(
struct xfs_inode *dp,
struct xfs_buf *bp, /* leaf buffer */
diff --git a/libxfs/xfs_dir2_priv.h b/libxfs/xfs_dir2_priv.h
index d04547f..1abd314 100644
--- a/libxfs/xfs_dir2_priv.h
+++ b/libxfs/xfs_dir2_priv.h
@@ -93,6 +93,8 @@ extern bool xfs_dir3_leaf_check_int(struct xfs_mount *mp, struct xfs_inode *dp,
/* xfs_dir2_node.c */
extern int xfs_dir2_leaf_to_node(struct xfs_da_args *args,
struct xfs_buf *lbp);
+extern xfs_dahash_t xfs_dir2_leaf1_lasthash(struct xfs_inode *dp,
+ struct xfs_buf *bp, int *count);
extern xfs_dahash_t xfs_dir2_leafn_lasthash(struct xfs_inode *dp,
struct xfs_buf *bp, int *count);
extern int xfs_dir2_leafn_lookup_int(struct xfs_buf *bp,
--
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