From bafc3a33f5527f3cdd4f27be17687703256d0914 Mon Sep 17 00:00:00 2001
From: Zhao Lei <zhaolei@cn.fujitsu.com>
Date: Mon, 27 Jul 2015 20:24:31 +0800
Subject: btrfs-progs: tests: Move code to create loop device to common

This code block is used several tests, move it to ./common and add a
helper.

Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>
---
 tests/common | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

(limited to 'tests/common')

diff --git a/tests/common b/tests/common
index 899ec7b1..2d337b0b 100644
--- a/tests/common
+++ b/tests/common
@@ -142,3 +142,19 @@ setup_root_helper()
 	fi
 	SUDO_HELPER=root_helper
 }
+
+prepare_test_dev()
+{
+	# num[K/M/G/T...]
+	local size="$1"
+
+	[[ "$TEST_DEV" ]] && return
+	[[ "$size" ]] || size='1G'
+
+	echo "\$TEST_DEV not given, use $TOP/test/test.img as fallback" >> \
+		$RESULTS
+	TEST_DEV="$TOP/tests/test.img"
+
+	truncate -s "$size" "$TEST_DEV" || _not_run "create file for loop device failed"
+}
+
-- 
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