common/rc: fix _require_xfs_io_command params check

When _require_xfs_io_command is passed command parameters,
the resulting error from invalid parameters may be ignored.

For example, the following bogus params would not abort the test:
_require_xfs_io_command "falloc" "-X"
_require_xfs_io_command "fiemap" "-X"

Fix this by looking for the relevant error message.

Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Reviewed-by: Eryu Guan <eguan@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Eryu Guan <eguan@redhat.com>
1 file changed