xfs/278: find sfdir inode field prefix

Use the xfs set/get metadata field helpers to detect the correct sfdir
field name prefix on v4-v5 filesystems.  This enables us to test inode
link count corrections on a (deliberately) disconnected directory.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>

diff --git a/tests/xfs/278 b/tests/xfs/278
index b94ee9c68e99da6bb7b8e72d6f22b235deddbdef..47012a36ef1b8cd118e359135b7c67e97cd98e6a 100755 (executable)
--- a/tests/xfs/278
+++ b/tests/xfs/278
@@ -61,17 +61,39 @@ _scratch_unmount
 
 echo "Silence is goodness..."
 
+get_sfdir_prefix() {
+       local dir_ino="$1"
+
+       for prefix in "u.sfdir3" "u.sfdir2" "u3.sfdir3"; do
+               if [ -n "$(_scratch_xfs_get_metadata_field \
+                               "${prefix}.hdr.parent.i4" \
+                               "inode ${dir_ino}")" ]; then
+                       echo "${prefix}"
+                       return 0
+               fi
+       done
+       _scratch_xfs_db -c "inode ${dir_ino}" -c 'p' >> $seqres.full
+       return 1
+}
+set_ifield() {
+       _scratch_xfs_set_metadata_field "$1" 0 "inode $2" >> $seqres.full
+}
+
+sfdir_prefix="$(get_sfdir_prefix "$DIR_INO" || \
+       _fail "Cannot determine sfdir prefix")"
+
 # Corrupt DIR
-_scratch_xfs_db -x -c "inode $DIR_INO" -c "write u.sfdir2.list[0].inumber.i4 0"  >> $seqres.full
-_scratch_xfs_db -x -c "inode $DIR_INO" -c "write u.sfdir2.list[0].name 0"  >> $seqres.full
-_scratch_xfs_db -x -c "inode $DIR_INO" -c "write u.sfdir2.list[0].offset 0"  >> $seqres.full
-_scratch_xfs_db -x -c "inode $DIR_INO" -c "write u.sfdir2.list[0].namelen 0"  >> $seqres.full
-_scratch_xfs_db -x -c "inode $DIR_INO" -c "write u.sfdir2.hdr.parent.i4 0"  >> $seqres.full
-_scratch_xfs_db -x -c "inode $DIR_INO" -c "write core.nlinkv2 0"  >> $seqres.full
+
+set_ifield "${sfdir_prefix}.list[0].inumber.i4" "$DIR_INO"
+set_ifield "${sfdir_prefix}.list[0].name" "$DIR_INO"
+set_ifield "${sfdir_prefix}.list[0].offset" "$DIR_INO"
+set_ifield "${sfdir_prefix}.list[0].namelen" "$DIR_INO"
+set_ifield "${sfdir_prefix}.hdr.parent.i4" "$DIR_INO"
+set_ifield "core.nlinkv2" "$DIR_INO"
 
 # Corrupt SUBDIR
-_scratch_xfs_db -x -c "inode $SUBDIR_INO" -c "write u.sfdir2.hdr.parent.i4 0"  >> $seqres.full
-_scratch_xfs_db -x -c "inode $SUBDIR_INO" -c "write core.nlinkv2 0"  >> $seqres.full
+set_ifield "${sfdir_prefix}.hdr.parent.i4" "$SUBDIR_INO"
+set_ifield "core.nlinkv2" "$SUBDIR_INO"
 
 echo "===== BEGIN of xfs_repair =====" >> $seqres.full
 echo "" >>$seqres.full