[PATCH 068/145] xfs_repair: check for impossible rmap record field combinations

[Darrick J. Wong]

Make sure there are no records or keys with impossible field
combinations, such as non-inode records with offsets or flags.

Signed-off-by: Darrick J. Wong <darrick.wong at oracle.com>
---
 repair/scan.c |   12 ++++++++++++
 1 file changed, 12 insertions(+)


diff --git a/repair/scan.c b/repair/scan.c
index d72b257..ec41ba6 100644
--- a/repair/scan.c
+++ b/repair/scan.c
@@ -926,6 +926,18 @@ _("%s rmap btree block claimed (state %d), agno %d, bno %d, suspect %d\n"),
 	_("invalid owner in rmap btree record %d (%"PRId64" %u) block %u/%u\n"),
 						i, owner, len, agno, bno);
 
+			/* Look for impossible record field combinations. */
+			if (XFS_RMAP_NON_INODE_OWNER(key.rm_owner)) {
+				if (key.rm_flags)
+					do_warn(
+	_("record %d of block (%u/%u) in %s btree cannot have non-inode owner with flags\n"),
+						i, agno, bno, name);
+				if (key.rm_offset)
+					do_warn(
+	_("record %d of block (%u/%u) in %s btree cannot have non-inode owner with offset\n"),
+						i, agno, bno, name);
+			}
+
 			/* Check for out of order records. */
 			if (i == 0) {
 advance: