From: Kouya Shimura <kouya@jp.fujitsu.com>
Date: Tue, 14 Dec 2010 17:15:48 +0000 (+0000)
Subject: tools/hotplug/Linux: forced to release lock if holder process is gone
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=6250b87dcd7eef8ba59a32edc41751b833f990e0;p=xen.git

tools/hotplug/Linux: forced to release lock if holder process is gone

When a script using locking.sh is stopped by ctrl-C, the lock file remains.
We have to wait 100 seconds for releasing the lock at the next time.

Signed-off-by: Kouya Shimura <kouya@jp.fujitsu.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
---

diff --git a/tools/hotplug/Linux/locking.sh b/tools/hotplug/Linux/locking.sh
index 7dbd6bef81..8748d95454 100644
--- a/tools/hotplug/Linux/locking.sh
+++ b/tools/hotplug/Linux/locking.sh
@@ -61,6 +61,12 @@ _claim_lock()
     then
       owner="$new_owner"
       retries=0
+    else
+      local pid=$(echo $owner | cut -d : -f 1)
+      if [ ! -f "/proc/$pid/status" ]
+      then
+        _release_lock $lockdir
+      fi
     fi
 
     if [ $retries -gt $LOCK_SPINNING_RETRIES ]