Source code for lago.brctl
#
# Copyright 2014 Red Hat, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
#
# Refer to the README and COPYING files for full details of the license
#
import utils
_BRCTL = ['sudo', 'brctl']
_IP = ['sudo', 'ip']
[docs]def _brctl(command, *args):
ret, out, err = utils.run_command(_BRCTL + [command] + list(args))
if ret:
raise RuntimeError(
'brctl %s failed\nrc: %d\n\nout:\n%s\n\nerr:\n%s' %
(command, ret, out, err)
)
return ret, out, err
[docs]def _set_link(name, state):
ret, _, _ = utils.run_command(_IP + ['link', 'set', 'dev', name, state])
if ret:
raise RuntimeError('Could not set %s to state %s' % (name, state))
[docs]def create(name, stp=True):
_brctl('addbr', name)
try:
_set_link(name, 'up')
if stp:
_brctl('stp', name, 'on')
except:
_brctl('delbr', name)
raise
[docs]def destroy(name):
_set_link(name, 'down')
_brctl('delbr', name)
[docs]def exists(name):
ret, out, err = _brctl('show', name)
return err == ''