From 29fe8007e75bf8983fa1267ae2850787262f17c1 Mon Sep 17 00:00:00 2001
From: Tomas Racek <tracek@redhat.com>
Date: Tue, 12 Feb 2013 09:21:59 +0000
Subject: [PATCH] xfstests: Add new standard loop handling functions

Add _create_loop_device and _destroy_loop_device to uniformly handle
loopback devices.

V1->V2: Fix possible race

Signed-off-by: Tomas Racek <tracek@redhat.com>
Reviewed-by: Rich Johnston <rjohnston@sgi.com>
Signed-off-by: Rich Johnston <rjohnston@sgi.com>
---
 common.rc | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/common.rc b/common.rc
index 0cccb94b..2f4a9f40 100644
--- a/common.rc
+++ b/common.rc
@@ -1833,6 +1833,19 @@ _require_dumpe2fs()
 	fi
 }
 
+_create_loop_device()
+{
+	file=$1
+	dev=`losetup -f --show $file` || _fail "Cannot assign $file to a loop device"
+	echo $dev
+}
+
+_destroy_loop_device()
+{
+	dev=$1
+	losetup -d $dev || _fail "Cannot destroy loop device $dev"
+}
+
 ################################################################################
 
 if [ "$iam" != new -a "$iam" != bench ]
-- 
2.39.5