common: add helper require function _require_btrfs_cloner

So that the same check (btrfs cloner program presence) can be reused
by other tests.

Signed-off-by: Filipe David Borba Manana <fdmanana@gmail.com>
Reviewed-by: David Disseldorp <ddiss@suse.de>
Signed-off-by: Dave Chinner <david@fromorbit.com>

common/rc

@@ -2085,6 +2085,13 @@ _require_fssum()
 	[ -x $FSSUM_PROG ] || _notrun "fssum not built"
 }
 
+_require_btrfs_cloner()
+{
+	CLONER_PROG=$here/src/cloner
+	[ -x $CLONER_PROG ] || \
+		_notrun "cloner binary not present at $CLONER_PROG"
+}
+
 # Given 2 files, verify that they have the same mapping but different
 # inodes - i.e. an undisturbed reflink
 # Silent if so, make noise if not

tests/btrfs/035

@@ -45,13 +45,11 @@ trap "_cleanup ; exit \$status" 0 1 2 3 15
 _supported_fs btrfs
 _supported_os Linux
 _require_scratch
+_require_btrfs_cloner
 
 _scratch_mkfs > /dev/null 2>&1
 _scratch_mount
 
-CLONER_PROG=$here/src/cloner
-[ -x $CLONER_PROG ] || _notrun "cloner binary not present at $CLONER_PROG"
-
 src_str="aaaaaaaaaa"
 
 echo -n "$src_str" > $SCRATCH_MNT/src