xfstests: generic/317 318 need procfs uid_map/gid_map support

generic/317 and 318 need /proc/<pid>/[uid_map|gid_map], test fail on
older kernels without that support.

Add a _require_ugid_map() function and called by 317 and 318.

Signed-off-by: Eryu Guan <eguan@redhat.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Rich Johnston <rjohnston@sgi.com>

common/rc

@@ -2142,6 +2142,16 @@ _require_dumpe2fs()
 	fi
 }
 
+_require_ugid_map()
+{
+	if [ ! -e /proc/self/uid_map ]; then
+		_notrun "This test requires procfs uid_map support."
+	fi
+	if [ ! -e /proc/self/gid_map ]; then
+		_notrun "This test requires procfs gid_map support."
+	fi
+}
+
 _create_loop_device()
 {
 	file=$1

tests/generic/317

@@ -63,6 +63,7 @@ rm -f $seqres.full
 _require_scratch
 _need_to_be_root
 _require_user
+_require_ugid_map
 qa_user_id=`grep $qa_user /etc/passwd |awk -F: '{print $3}'`
 
 _filter_output()

tests/generic/318

@@ -63,6 +63,7 @@ _require_scratch
 _need_to_be_root
 _acl_setup_ids
 _require_acls
+_require_ugid_map
 ns_acl1=0
 ns_acl2=`expr $acl2 - $acl1`
 ns_acl3=`expr $acl3 - $acl1`