common/xfs: Add require_xfs_db_write_array function

[xfstests-dev.git] / common / xfs

diff --git a/common/xfs b/common/xfs
index 3169f8710dd706c9df3b0376280db5200c252bc8..e0bc3f43d3c5d86805c245cdf97f3afd235bac6f 100644 (file)
--- a/common/xfs
+++ b/common/xfs
@@ -701,3 +701,23 @@ _scratch_xfs_set_sb_field()
 {
        _scratch_xfs_set_metadata_field "$1" "$2" "sb 0"
 }
+
+# Before xfsprogs commit 4222d000ed("db: write via array indexing doesn't
+# work"), xfs_db command to write a specific AGFL index doesn't work. It's a
+# bug in a diagnostic tool that is only used by XFS developers as a test
+# infrastructure, so it's fine to treat it as a infrastructure dependency as
+# all other _require rules.
+_require_xfs_db_write_array()
+{
+       local supported=0
+
+       _require_test
+       touch $TEST_DIR/$seq.img
+       $MKFS_XFS_PROG -d file,name=$TEST_DIR/$seq.img,size=512m >/dev/null 2>&1
+       $XFS_DB_PROG -x -c "agfl 0" -c "write bno[32] 78" $TEST_DIR/$seq.img \
+               >/dev/null 2>&1
+       $XFS_DB_PROG -x -c "agfl 0" -c "print bno[32]" $TEST_DIR/$seq.img \
+               | grep -q "bno\[32\] = 78" && supported=1
+       rm -f $TEST_DIR/$seq.img
+       [ $supported -eq 0 ] && _notrun "xfs_db write can't support array"
+}