def unlock_apt_pkg_global_lock(self):
try:
apt_pkg.PkgSystemUnLock()
except SystemError, e:
print "WARNNING [SystemError]: Can NOT unlock apt (%s)" % e
#raise Exception
pass
def update_cache(self, window_id, lock):
"""start synaptic to update the package cache"""
try:
apt_pkg.PkgSystemUnLock()
except SystemError:
pass
cmd = ["/usr/sbin/synaptic", "--hide-main-window",
"--non-interactive",
"--parent-window-id", "%s" % (window_id),
"--update-at-startup"]
subprocess.call(cmd)
lock.release()
def update_cache(self, window_id, lock):
"""start synaptic to update the package cache"""
try:
apt_pkg.PkgSystemUnLock()
except SystemError:
pass
cmd = []
if os.getuid() != 0:
cmd = [
'/usr/bin/gksu', '--desktop',
'/usr/share/applications/synaptic.desktop', '--'
]
cmd += [
'/usr/sbin/synaptic', '--hide-main-window', '--non-interactive',
'--parent-window-id',
'%s' % (window_id), '--update-at-startup'
]
subprocess.call(cmd)
lock.release()
lock = "/tmp/test.lck"
apt_pkg.init()
# system-lock
apt_pkg.PkgSystemLock()
pid = os.fork()
if pid == 0:
try:
apt_pkg.PkgSystemLock()
except SystemError, s:
print "Can't get lock: (error text:\n%s)" % s
sys.exit(0)
apt_pkg.PkgSystemUnLock()
# low-level lock
fd = apt_pkg.GetLock(lock, True)
print "Lockfile fd: %s" % fd
# try to get lock without error flag
pid = os.fork()
if pid == 0:
# child
fd = apt_pkg.GetLock(lock, False)
print "Lockfile fd (child): %s" % fd
sys.exit(0)
# try to get lock with error flag
pid = os.fork()
def unlock_apt_pkg_global_lock(self):
try:
apt_pkg.PkgSystemUnLock()
except SystemError:
pass # E:Not locked