From 2f24e8fb8d684f576f3dcced820860d70652a7f9 Mon Sep 17 00:00:00 2001
From: Kevin Wolf <kwolf@redhat.com>
Date: Thu, 28 Jun 2012 16:55:54 +0200
Subject: [PATCH] qemu-iotests: Valgrind support

check -valgrind wraps all qemu-io calls with valgrind. This makes it a
bit easier to debug problems that occur somewhere deep in a test case.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
---
 tests/qemu-iotests/common    | 11 +++++++++++
 tests/qemu-iotests/common.rc | 10 ++++++++++
 2 files changed, 21 insertions(+)

diff --git a/tests/qemu-iotests/common b/tests/qemu-iotests/common
index eeb70cb..1f6fdf5 100644
--- a/tests/qemu-iotests/common
+++ b/tests/qemu-iotests/common
@@ -41,6 +41,7 @@ sortme=false
 expunge=true
 have_test_arg=false
 randomize=false
+valgrind=false
 rm -f $tmp.list $tmp.tmp $tmp.sed
 
 export IMGFMT=raw
@@ -212,6 +213,11 @@ testlist options
 	    xpand=false
 	    ;;
 
+    -valgrind)
+        valgrind=true
+	    xpand=false
+        ;;
+
 	-g)	# -g group ... pick from group file
 	    group=true
 	    xpand=false
@@ -345,3 +351,8 @@ fi
 [ "$QEMU" = "" ] && _fatal "qemu not found"
 [ "$QEMU_IMG" = "" ] && _fatal "qemu-img not found"
 [ "$QEMU_IO" = "" ] && _fatal "qemu-img not found"
+
+if $valgrind; then
+    export REAL_QEMU_IO="$QEMU_IO_PROG"
+    export QEMU_IO_PROG=valgrind_qemu_io
+fi
diff --git a/tests/qemu-iotests/common.rc b/tests/qemu-iotests/common.rc
index e535874..5e3a524 100644
--- a/tests/qemu-iotests/common.rc
+++ b/tests/qemu-iotests/common.rc
@@ -53,6 +53,16 @@ else
     TEST_IMG=$IMGPROTO:$TEST_DIR/t.$IMGFMT
 fi
 
+function valgrind_qemu_io()
+{
+    valgrind --log-file=/tmp/$$.valgrind --error-exitcode=99 $REAL_QEMU_IO "$@"
+    if [ $? != 0 ]; then
+        cat /tmp/$$.valgrind
+    fi
+    rm -f /tmp/$$.valgrind
+}
+
+
 _optstr_add()
 {
     if [ -n "$1" ]; then
-- 
2.7.4