From: Darrick J. Wong <djwong@xxxxxxxxxx>
Add a couple of utility functions to set or remove parent pointers from
a file. These functions will be used by repair code, hence they skip
the xattr logging that regular parent pointer updates use.
Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
---
libxfs/xfs_dir2.c | 2 +-
libxfs/xfs_dir2.h | 2 +-
libxfs/xfs_parent.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++
libxfs/xfs_parent.h | 8 ++++++++
4 files changed, 56 insertions(+), 2 deletions(-)
diff --git a/libxfs/xfs_dir2.c b/libxfs/xfs_dir2.c
index 79b6ec893fd..b906f39e0fe 100644
--- a/libxfs/xfs_dir2.c
+++ b/libxfs/xfs_dir2.c
@@ -439,7 +439,7 @@ int
xfs_dir_removename(
struct xfs_trans *tp,
struct xfs_inode *dp,
- struct xfs_name *name,
+ const struct xfs_name *name,
xfs_ino_t ino,
xfs_extlen_t total) /* bmap's total block count */
{
diff --git a/libxfs/xfs_dir2.h b/libxfs/xfs_dir2.h
index f99788a1f3e..ca1949ed4f5 100644
--- a/libxfs/xfs_dir2.h
+++ b/libxfs/xfs_dir2.h
@@ -55,7 +55,7 @@ extern int xfs_dir_lookup(struct xfs_trans *tp, struct xfs_inode *dp,
const struct xfs_name *name, xfs_ino_t *inum,
struct xfs_name *ci_name);
extern int xfs_dir_removename(struct xfs_trans *tp, struct xfs_inode *dp,
- struct xfs_name *name, xfs_ino_t ino,
+ const struct xfs_name *name, xfs_ino_t ino,
xfs_extlen_t tot);
extern int xfs_dir_replace(struct xfs_trans *tp, struct xfs_inode *dp,
const struct xfs_name *name, xfs_ino_t inum,
diff --git a/libxfs/xfs_parent.c b/libxfs/xfs_parent.c
index 024e89756e6..f7cef51e1ec 100644
--- a/libxfs/xfs_parent.c
+++ b/libxfs/xfs_parent.c
@@ -421,3 +421,49 @@ xfs_parent_lookup(
return xfs_attr_get_ilocked(&scr->args);
}
+
+/*
+ * Attach the parent pointer (@pptr -> @name) to @ip immediately. Caller must
+ * not have a transaction or hold the ILOCK. This is for specialized repair
+ * functions only. The scratchpad need not be initialized.
+ */
+int
+xfs_parent_set(
+ struct xfs_inode *ip,
+ const struct xfs_parent_name_irec *pptr,
+ struct xfs_parent_scratch *scr)
+{
+ if (XFS_IS_CORRUPT(ip->i_mount,
+ !xfs_parent_verify_irec(ip->i_mount, pptr))) {
+ return -EFSCORRUPTED;
+ }
+
+ xfs_parent_irec_to_disk(&scr->rec, pptr);
+ xfs_parent_scratch_init(NULL, ip, pptr, scr);
+ scr->args.op_flags |= XFS_DA_OP_LOGGED;
+
+ return xfs_attr_set(&scr->args);
+}
+
+/*
+ * Remove the parent pointer (@rec -> @name) from @ip immediately. Caller must
+ * not have a transaction or hold the ILOCK. This is for specialized repair
+ * functions only. The scratchpad need not be initialized.
+ */
+int
+xfs_parent_unset(
+ struct xfs_inode *ip,
+ const struct xfs_parent_name_irec *pptr,
+ struct xfs_parent_scratch *scr)
+{
+ if (XFS_IS_CORRUPT(ip->i_mount,
+ !xfs_parent_verify_irec(ip->i_mount, pptr))) {
+ return -EFSCORRUPTED;
+ }
+
+ xfs_parent_irec_to_disk(&scr->rec, pptr);
+ xfs_parent_scratch_init(NULL, ip, pptr, scr);
+ scr->args.op_flags |= XFS_DA_OP_LOGGED | XFS_DA_OP_REMOVE;
+
+ return xfs_attr_set(&scr->args);
+}
diff --git a/libxfs/xfs_parent.h b/libxfs/xfs_parent.h
index e4443da1d86..58e59af818b 100644
--- a/libxfs/xfs_parent.h
+++ b/libxfs/xfs_parent.h
@@ -162,4 +162,12 @@ int xfs_parent_lookup(struct xfs_trans *tp, struct xfs_inode *ip,
const struct xfs_parent_name_irec *pptr,
struct xfs_parent_scratch *scratch);
+int xfs_parent_set(struct xfs_inode *ip,
+ const struct xfs_parent_name_irec *pptr,
+ struct xfs_parent_scratch *scratch);
+
+int xfs_parent_unset(struct xfs_inode *ip,
+ const struct xfs_parent_name_irec *rec,
+ struct xfs_parent_scratch *scratch);
+
#endif /* __XFS_PARENT_H__ */
