Gio:检查volume是否挂载

Question

我要做的是:

mo = gio.MountOperation()
mo.connect('ask-password', ask_password_cb)
location = gio.File("ssh://[e-mail]/home/leon/test.txt")
location.mount_enclosing_volume(mo, callbackz)
loop = gobject.MainLoop()
loop.run()

但是如果卷已经挂载，它会抛出gio.Error。我如何检查所附的卷是否已挂载?最好的方法是什么?

Answer 1

也许你可以这样做:

if location.find_enclosing_mount() == None
   location.mount_enclosing_volume(mo, callbackz) 

Answer 2

我在Nullege上发现了两段代码，它们似乎可以解决这个问题:

try:
    retval = gfile.mount_enclosing_volume_finish(result)
except gio.Error, e:
    # If we run the tests too fast
    if e.code == gio.ERROR_ALREADY_MOUNTED:
        print ('WARNING: testfile is already mounted, '
        'skipping test')
        loop.quit()
        return
    raise
self.failUnless(retval)

或

# Already mounted ?
if g_file.query_exists():
    self._folder = g_file
else:
    mount_operation = MountOperation()
    mount_operation.set_anonymous(True)
    g_file.mount_enclosing_volume(mount_operation, self._mount_end)