xfs: check that the mountpoint is actually mounted in _supports_xfs_scrub

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>
Reviewed-by: Zorro Lang <zlang@redhat.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Zorro Lang <zlang@kernel.org>

diff --git a/common/xfs b/common/xfs
index f53b33fc54f707a07a6f719ba75f27eb9d71c63a..4e54d75cc7ddd7c58cebf000ec88c8dfb3995a87 100644 (file)
--- 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