[PATCH 4/4] generic/623: do not run with overlayfs

[Amir Goldstein <amir73il@gmail.com>]

This test performs shutdown via xfs_io -c shutdown.

Overlayfs tests can use _scratch_shutdown, but they cannot use
"-c shutdown" xfs_io command without jumping through hoops, so by
default we do not support it.

Add this condition to _require_xfs_io_command and add the require
statement to test generic/623 so it wont run with overlayfs.

Reported-by: André Almeida <andrealmeid@igalia.com>
Link: https://lore.kernel.org/linux-fsdevel/20250521-ovl_ro-v1-1-2350b1493d94@igalia.com/
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
---
 common/rc         | 8 ++++++++
 tests/generic/623 | 1 +
 2 files changed, 9 insertions(+)

diff --git a/common/rc b/common/rc
index d8ee8328..bffd576a 100644
--- a/common/rc
+++ b/common/rc
@@ -3033,6 +3033,14 @@ _require_xfs_io_command()
 		touch $testfile
 		testio=`$XFS_IO_PROG -c "syncfs" $testfile 2>&1`
 		;;
+	"shutdown")
+		if [ $FSTYP = "overlay" ]; then
+			# Overlayfs tests can use _scratch_shutdown, but they
+			# cannot use "-c shutdown" xfs_io command without jumping
+			# through hoops, so by default we do not support it.
+			_notrun "xfs_io $command not supported on $FSTYP"
+		fi
+		;;
 	*)
 		testio=`$XFS_IO_PROG -c "help $command" 2>&1`
 	esac
diff --git a/tests/generic/623 b/tests/generic/623
index b97e2adb..4e36daaf 100755
--- a/tests/generic/623
+++ b/tests/generic/623
@@ -16,6 +16,7 @@ _begin_fstest auto quick shutdown mmap
 
 _require_scratch_nocheck
 _require_scratch_shutdown
+_require_xfs_io_command "shutdown"
 
 _scratch_mkfs &>> $seqres.full
 _scratch_mount
-- 
2.34.1