[PATCH 1/3] Add new standard loop handling functions

[Tomas Racek]

Add _create_loop_device and _destroy_loop_device to uniformly handle
loopback devices.

Signed-off-by: Tomas Racek <tracek at redhat.com>
---
 common.rc | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/common.rc b/common.rc
index 966fc93..b5edd22 100644
--- a/common.rc
+++ b/common.rc
@@ -1804,6 +1804,21 @@ _test_batched_discard()
 	$FSTRIM_PROG ${1} &>/dev/null
 }
 
+_create_loop_device()
+{
+	file=$1
+	dev=`losetup -f`
+	losetup $dev $file || _fail "Cannot associate $file with $dev"
+	echo $dev
+}
+
+_destroy_loop_device()
+{
+	dev=$1
+	losetup -d $dev || _fail "Cannot destroy loop device $dev"
+}
+
+
 ################################################################################
 
 if [ "$iam" != new -a "$iam" != bench ]
-- 
1.7.11.7