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Diffstat (limited to 'fs/xfs/scrub/agheader.c')
-rw-r--r--fs/xfs/scrub/agheader.c43
1 files changed, 41 insertions, 2 deletions
diff --git a/fs/xfs/scrub/agheader.c b/fs/xfs/scrub/agheader.c
index e954f07679..f8e5b67128 100644
--- a/fs/xfs/scrub/agheader.c
+++ b/fs/xfs/scrub/agheader.c
@@ -15,6 +15,7 @@
#include "xfs_ialloc.h"
#include "xfs_rmap.h"
#include "xfs_ag.h"
+#include "xfs_inode.h"
#include "scrub/scrub.h"
#include "scrub/common.h"
@@ -165,8 +166,7 @@ xchk_superblock(
xchk_block_set_corrupt(sc, bp);
/* Check sb_versionnum bits that are set at mkfs time. */
- vernum_mask = cpu_to_be16(~XFS_SB_VERSION_OKBITS |
- XFS_SB_VERSION_NUMBITS |
+ vernum_mask = cpu_to_be16(XFS_SB_VERSION_NUMBITS |
XFS_SB_VERSION_ALIGNBIT |
XFS_SB_VERSION_DALIGNBIT |
XFS_SB_VERSION_SHAREDBIT |
@@ -865,6 +865,43 @@ xchk_agi_xref(
/* scrub teardown will take care of sc->sa for us */
}
+/*
+ * Check the unlinked buckets for links to bad inodes. We hold the AGI, so
+ * there cannot be any threads updating unlinked list pointers in this AG.
+ */
+STATIC void
+xchk_iunlink(
+ struct xfs_scrub *sc,
+ struct xfs_agi *agi)
+{
+ unsigned int i;
+ struct xfs_inode *ip;
+
+ for (i = 0; i < XFS_AGI_UNLINKED_BUCKETS; i++) {
+ xfs_agino_t agino = be32_to_cpu(agi->agi_unlinked[i]);
+
+ while (agino != NULLAGINO) {
+ if (agino % XFS_AGI_UNLINKED_BUCKETS != i) {
+ xchk_block_set_corrupt(sc, sc->sa.agi_bp);
+ return;
+ }
+
+ ip = xfs_iunlink_lookup(sc->sa.pag, agino);
+ if (!ip) {
+ xchk_block_set_corrupt(sc, sc->sa.agi_bp);
+ return;
+ }
+
+ if (!xfs_inode_on_unlinked_list(ip)) {
+ xchk_block_set_corrupt(sc, sc->sa.agi_bp);
+ return;
+ }
+
+ agino = ip->i_next_unlinked;
+ }
+ }
+}
+
/* Scrub the AGI. */
int
xchk_agi(
@@ -949,6 +986,8 @@ xchk_agi(
if (pag->pagi_freecount != be32_to_cpu(agi->agi_freecount))
xchk_block_set_corrupt(sc, sc->sa.agi_bp);
+ xchk_iunlink(sc, agi);
+
xchk_agi_xref(sc);
out:
return error;