[PATCH 1/4] xfs: check that the mountpoint is actually mounted in _supports_xfs_scrub

[Christoph Hellwig <hch@lst.de>]

Add a sanity check that the passed in mount point is actually mounted
to guard against actually calling _supports_xfs_scrub before
$SCRATCH_MNT is mounted.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 common/xfs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/common/xfs b/common/xfs
index f53b33fc5..4e54d75cc 100644
--- a/common/xfs
+++ b/common/xfs
@@ -649,6 +649,9 @@ _supports_xfs_scrub()
 	test "$FSTYP" = "xfs" || return 1
 	test -x "$XFS_SCRUB_PROG" || return 1
 
+	mountpoint $mountpoint >/dev/null || \
+		_fail "$mountpoint is not mounted"
+
 	# Probe for kernel support...
 	$XFS_IO_PROG -c 'help scrub' 2>&1 | grep -q 'types are:.*probe' || return 1
 	$XFS_IO_PROG -c "scrub probe" "$mountpoint" 2>&1 | grep -q "Inappropriate ioctl" && return 1
-- 
2.39.2