From: NeilBrown <neilb@suse.de>
Date: Fri, 16 Mar 2012 01:10:07 +0000 (+1100)
Subject: suspend.py: add block/unblock support
X-Git-Url: http://git.neil.brown.name/?a=commitdiff_plain;h=992741d7702ce8ae149b62e0fb9358b762478963;p=susman.git

suspend.py: add block/unblock support

Signed-off-by: NeilBrown <neilb@suse.de>
---

diff --git a/suspend.py b/suspend.py
index 2de18b4..48b2601 100644
--- a/suspend.py
+++ b/suspend.py
@@ -76,6 +76,22 @@ class monitor:
         fcntl.flock(old, fcntl.LOCK_UN)
         old.close()
 
+blockfd = None
+def block():
+    global blockfd
+    if blockfd:
+        return
+    try:
+        blockfd = open('/var/run/suspend/disabled')
+        fcntl.flock(blockfd, fcntl.LOCK_SH)
+    except:
+        pass
+
+def unblock():
+    global blockfd
+    if blockfd:
+        blockfd.close()
+        blockfd = None
 
 
 if __name__ == '__main__':