#!/usr/bin/python2.7
# Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import os
import re
import sys
import smf_include
from subprocess import CalledProcessError, Popen, PIPE, check_call
def set_hostmodel(value):
cmd = ["/usr/sbin/ipadm", "show-prop", "-p", "hostmodel",
"-co", "current", "ipv4"]
p = Popen(cmd, stdout=PIPE, stderr=PIPE)
output, error = p.communicate()
if p.returncode != 0:
print "failed to retrieve hostmodel ipadm property"
return False
if output.strip() == value:
return True
cmd = ["/usr/sbin/ipadm", "set-prop", "-t", "-p", "hostmodel=%s" % value,
"ipv4"]
p = Popen(cmd, stdout=PIPE, stderr=PIPE)
output, error = p.communicate()
if p.returncode != 0:
print "failed to set ipadm hostmodel property to %s" % value
return False
return True
def start():
# verify paths are valid
for f in sys.argv[2:4]:
if not os.path.exists(f) or not os.access(f, os.R_OK):
print '%s does not exist or is not readable' % f
return smf_include.SMF_EXIT_ERR_CONFIG
# set the hostmodel property if necessary
if not set_hostmodel("src-priority"):
return smf_include.SMF_EXIT_ERR_FATAL
cmd = "/usr/lib/neutron/neutron-dhcp-agent --config-file %s " \
"--config-file %s" % tuple(sys.argv[2:4])
smf_include.smf_subprocess(cmd)
def stop():
try:
# first kill the SMF contract
check_call(["/usr/bin/pkill", "-c", sys.argv[2]])
except CalledProcessError as err:
print "failed to kill the SMF contract: %s" % err
return smf_include.SMF_EXIT_ERR_FATAL
cmd = ["/usr/sbin/ipadm", "show-if", "-p", "-o", "ifname"]
p = Popen(cmd, stdout=PIPE, stderr=PIPE)
output, error = p.communicate()
if p.returncode != 0:
print "failed to retrieve IP interface names"
return smf_include.SMF_EXIT_ERR_FATAL
ifnames = output.splitlines()
# DHCP agent datalinks are always 15 characters in length. They start with
# 'dh', end with '_0', and in between they are hexadecimal digits.
prog = re.compile('dh[0-9A-Fa-f\_]{11}_0')
for ifname in ifnames:
if not prog.search(ifname):
continue
try:
# first remove the IP
check_call(["/usr/bin/pfexec", "/usr/sbin/ipadm", "delete-ip",
ifname])
# next remove the VNIC
check_call(["/usr/bin/pfexec", "/usr/sbin/dladm", "delete-vnic",
ifname])
except CalledProcessError as err:
print "failed to remove datalinks used by DHCP agent: %s" % err
return smf_include.SMF_EXIT_ERR_FATAL
# finally reset the hostmodel property
if not set_hostmodel("weak"):
return smf_include.SMF_EXIT_ERR_FATAL
return smf_include.SMF_EXIT_OK
if __name__ == "__main__":
os.putenv("LC_ALL", "C")
smf_include.smf_main()