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qfile-daemon-dvm: lock around possible savefile recreate

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This commit is contained in:
Rafal Wojtczuk 2011-03-28 17:39:21 +02:00
parent df9549a7db
commit 50af4bd8a0
1 changed files with 4 additions and 0 deletions
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dom0/restore/qfile-daemon-dvm
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@ -23,6 +23,7 @@ import os
import dbus
import subprocess
import sys
import fcntl
from qubes.qubes import QubesVmCollection
from qubes.qubes import QubesException
@ -123,7 +124,10 @@ def main():
global notify_object
notify_object = dbus.SessionBus().get_object("org.freedesktop.Notifications", "/org/freedesktop/Notifications")
qfile = QfileDaemonDvm(os.getenv("QREXEC_REMOTE_DOMAIN"))
lockf = open("/var/run/qubes/qfile-daemon-dvm.lock", 'a')
fcntl.flock(lockf, fcntl.LOCK_EX)
dispname = qfile.get_dvm()
lockf.close()
if dispname is not None:
subprocess.call(['/usr/lib/qubes/qrexec_client', '-d', dispname, 'directly:user:/usr/lib/qubes/dvm_file_editor'])
subprocess.call(['/usr/sbin/xm', 'destroy', dispname])