def create(self, path):
netnspath = netns._get_netnspath(path)
try:
netns.create(netnspath, self.libc)
except OSError as e:
raise NetlinkError(e.errno)
info = self.ipr._dump_one_ns(netnspath, set())
info['header']['type'] = RTM_NEWNETNS
info['header']['target'] = self.target
info['event'] = 'RTM_NEWNETNS'
del info['value']
return (info,)
def spec_normalize(spec):
if isinstance(spec, basestring):
ret = {'path': spec}
else:
ret = dict(spec)
path = netns._get_netnspath(ret['path'])
# on Python3 _get_netnspath() returns bytes, not str, so
# we have to decode it here in order to avoid issues with
# cache keys and DB inserts
if hasattr(path, 'decode'):
path = path.decode('utf-8')
ret['path'] = path
return ret
def defaults(cls, spec):
ret = dict(spec)
defaults = {}
if 'hostname' in spec:
defaults['kind'] = 'remote'
defaults['protocol'] = 'ssh'
defaults['target'] = spec['hostname']
if 'netns' in spec:
defaults['kind'] = 'netns'
defaults['target'] = spec['netns']
ret['netns'] = netns._get_netnspath(spec['netns'])
for key in defaults:
if key not in ret:
ret[key] = defaults[key]
return ret
def netns(self, cmd, *argv, **kwarg):
path = kwarg.get('path', kwarg.get('NSINFO_PATH'))
if path is None:
raise ValueError('netns spec is required')
netnspath = netns._get_netnspath(path)
if cmd == 'add':
return self.create(netnspath)
elif cmd == 'del':
return self.remove(netnspath)
elif cmd not in ('get', 'set'):
raise ValueError('method not supported')
for item in self.dump():
if item.get_attr('NSINFO_PATH') == netnspath:
return (item,)
return ()
def remove(self, path):
netnspath = netns._get_netnspath(path)
info = None
try:
info = self.ipr._dump_one_ns(netnspath, set())
except SkipInode:
raise NetlinkError(errno.EEXIST)
info['header']['type'] = RTM_DELNETNS
info['header']['target'] = self.target
info['event'] = 'RTM_DELNETNS'
del info['value']
try:
netns.remove(netnspath, self.libc)
except OSError as e:
raise NetlinkError(e.errno)
return (info,)
def __setitem__(self, key, value):
if self.state == 'system':
raise ValueError('attempt to change a readonly object')
if key == 'path':
value = netns._get_netnspath(value)
return super(NetNS, self).__setitem__(key, value)
