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-rw-r--r--fs/xfs/scrub/common.h56
1 files changed, 56 insertions, 0 deletions
diff --git a/fs/xfs/scrub/common.h b/fs/xfs/scrub/common.h
index cabdc0e168..da09580b45 100644
--- a/fs/xfs/scrub/common.h
+++ b/fs/xfs/scrub/common.h
@@ -103,9 +103,15 @@ xchk_setup_rtsummary(struct xfs_scrub *sc)
}
#endif
#ifdef CONFIG_XFS_QUOTA
+int xchk_ino_dqattach(struct xfs_scrub *sc);
int xchk_setup_quota(struct xfs_scrub *sc);
#else
static inline int
+xchk_ino_dqattach(struct xfs_scrub *sc)
+{
+ return 0;
+}
+static inline int
xchk_setup_quota(struct xfs_scrub *sc)
{
return -ENOENT;
@@ -151,6 +157,11 @@ void xchk_iunlock(struct xfs_scrub *sc, unsigned int ilock_flags);
void xchk_buffer_recheck(struct xfs_scrub *sc, struct xfs_buf *bp);
+/*
+ * Grab the inode at @inum. The caller must have created a scrub transaction
+ * so that we can confirm the inumber by walking the inobt and not deadlock on
+ * a loop in the inobt.
+ */
int xchk_iget(struct xfs_scrub *sc, xfs_ino_t inum, struct xfs_inode **ipp);
int xchk_iget_agi(struct xfs_scrub *sc, xfs_ino_t inum,
struct xfs_buf **agi_bpp, struct xfs_inode **ipp);
@@ -158,6 +169,26 @@ void xchk_irele(struct xfs_scrub *sc, struct xfs_inode *ip);
int xchk_install_handle_inode(struct xfs_scrub *sc, struct xfs_inode *ip);
/*
+ * Safe version of (untrusted) xchk_iget that uses an empty transaction to
+ * avoid deadlocking on loops in the inobt. This should only be used in a
+ * scrub or repair setup routine, and only prior to grabbing a transaction.
+ */
+static inline int
+xchk_iget_safe(struct xfs_scrub *sc, xfs_ino_t inum, struct xfs_inode **ipp)
+{
+ int error;
+
+ ASSERT(sc->tp == NULL);
+
+ error = xchk_trans_alloc(sc, 0);
+ if (error)
+ return error;
+ error = xchk_iget(sc, inum, ipp);
+ xchk_trans_cancel(sc);
+ return error;
+}
+
+/*
* Don't bother cross-referencing if we already found corruption or cross
* referencing discrepancies.
*/
@@ -167,6 +198,8 @@ static inline bool xchk_skip_xref(struct xfs_scrub_metadata *sm)
XFS_SCRUB_OFLAG_XCORRUPT);
}
+bool xchk_dir_looks_zapped(struct xfs_inode *dp);
+
#ifdef CONFIG_XFS_ONLINE_REPAIR
/* Decide if a repair is required. */
static inline bool xchk_needs_repair(const struct xfs_scrub_metadata *sm)
@@ -175,8 +208,21 @@ static inline bool xchk_needs_repair(const struct xfs_scrub_metadata *sm)
XFS_SCRUB_OFLAG_XCORRUPT |
XFS_SCRUB_OFLAG_PREEN);
}
+
+/*
+ * "Should we prepare for a repair?"
+ *
+ * Return true if the caller permits us to repair metadata and we're not
+ * setting up for a post-repair evaluation.
+ */
+static inline bool xchk_could_repair(const struct xfs_scrub *sc)
+{
+ return (sc->sm->sm_flags & XFS_SCRUB_IFLAG_REPAIR) &&
+ !(sc->flags & XREP_ALREADY_FIXED);
+}
#else
# define xchk_needs_repair(sc) (false)
+# define xchk_could_repair(sc) (false)
#endif /* CONFIG_XFS_ONLINE_REPAIR */
int xchk_metadata_inode_forks(struct xfs_scrub *sc);
@@ -188,6 +234,16 @@ int xchk_metadata_inode_forks(struct xfs_scrub *sc);
#define xchk_xfile_descr(sc, fmt, ...) \
kasprintf(XCHK_GFP_FLAGS, "XFS (%s): " fmt, \
(sc)->mp->m_super->s_id, ##__VA_ARGS__)
+#define xchk_xfile_ag_descr(sc, fmt, ...) \
+ kasprintf(XCHK_GFP_FLAGS, "XFS (%s): AG 0x%x " fmt, \
+ (sc)->mp->m_super->s_id, \
+ (sc)->sa.pag ? (sc)->sa.pag->pag_agno : (sc)->sm->sm_agno, \
+ ##__VA_ARGS__)
+#define xchk_xfile_ino_descr(sc, fmt, ...) \
+ kasprintf(XCHK_GFP_FLAGS, "XFS (%s): inode 0x%llx " fmt, \
+ (sc)->mp->m_super->s_id, \
+ (sc)->ip ? (sc)->ip->i_ino : (sc)->sm->sm_ino, \
+ ##__VA_ARGS__)
/*
* Setting up a hook to wait for intents to drain is costly -- we have to take