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From: Max Reitz <mreitz@redhat.com>
Date: Wed, 25 Feb 2015 13:08:35 -0500
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Subject: [Qemu-devel] [PATCH 22/25] iotests: Add _timeout function
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To: qemu-block@nongnu.org
Cc: Kevin Wolf <kwolf@redhat.com>, Paolo Bonzini <pbonzini@redhat.com>, qemu-devel@nongnu.org, Stefan Hajnoczi <stefanha@redhat.com>, Max Reitz <mreitz@redhat.com>

Add a function for executing a command with a timeout.

Signed-off-by: Max Reitz <mreitz@redhat.com>
---
 tests/qemu-iotests/common.rc | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/tests/qemu-iotests/common.rc b/tests/qemu-iotests/common.rc
index 22d3514..bd8453a 100644
--- a/tests/qemu-iotests/common.rc
+++ b/tests/qemu-iotests/common.rc
@@ -489,5 +489,21 @@ _die()
         exit 1
 }
 
+_timeout()
+{
+    local timeout=1
+    local pid
+
+    if [ "$1" = "-t" ]; then
+        shift
+        timeout=$1
+        shift
+    fi
+    "$@" &
+    pid=$!
+    (sleep $timeout; kill -9 $pid &> /dev/null) &
+    wait -n $pid $!
+}
+
 # make sure this script returns success
 true
-- 
2.1.0