Work around bug in Python subprocess for remctl

svn path=/trunk/packages/sipb-xen-guest-installer/; revision=528

diff --git a/files/usr/sbin/sipb-xen-lvcopy b/files/usr/sbin/sipb-xen-lvcopy
index 065cda2..317b88a 100755 (executable)
--- a/files/usr/sbin/sipb-xen-lvcopy
+++ b/files/usr/sbin/sipb-xen-lvcopy
@@ -7,6 +7,11 @@ import tempfile
 import time
 from subprocess import call, check_call, Popen, PIPE
 
+# Make sure to use up fd 0 to avoid a bug in subprocess in Python <= 2.5.1
+# NB we need to do this on every Python remctl script.
+# See r53624 in Python svn.
+sys.stdin = open('/dev/null')
+
 def losetup(source, offset=0):
   p = Popen(['sipb-xen-losetup', source, str(offset)], stdout=PIPE)
   return p.communicate()[0].strip()