Changes to the Neutron DHCP agent to port it to Solaris. These changes
will eventually be proposed upstream.

*** neutron-8.0.0/neutron/agent/linux/external_process.py	2016-04-07 00:44:25.000000000 -0700
--- new//neutron/agent/linux/external_process.py	2016-05-24 10:42:23.157427654 -0700
***************
*** 15,20 ****
--- 15,21 ----
  import abc
  import collections
  import os.path
+ import platform
  
  import eventlet
  from oslo_concurrency import lockutils
***************
*** 87,95 ****
                  cmd_callback = self.default_cmd_callback
              cmd = cmd_callback(self.get_pid_file_name())
  
!             ip_wrapper = ip_lib.IPWrapper(namespace=self.namespace)
!             ip_wrapper.netns.execute(cmd, addl_env=self.cmd_addl_env,
!                                      run_as_root=self.run_as_root)
          elif reload_cfg:
              self.reload_cfg()
  
--- 88,104 ----
                  cmd_callback = self.default_cmd_callback
              cmd = cmd_callback(self.get_pid_file_name())
  
!             if self.namespace:
!                 ip_wrapper = ip_lib.IPWrapper(namespace=self.namespace)
!                 ip_wrapper.netns.execute(cmd, addl_env=self.cmd_addl_env,
!                                          run_as_root=self.run_as_root)
!             else:
!                 env_params = []
!                 if self.cmd_addl_env:
!                     env_params = (['/usr/bin/env'] +
!                                   ['%s=%s' % pair for pair in
!                                    self.cmd_addl_env.items()])
!                 utils.execute(env_params + list(cmd))
          elif reload_cfg:
              self.reload_cfg()
  
***************
*** 100,106 ****
          pid = self.pid
  
          if self.active:
!             if get_stop_command:
                  cmd = get_stop_command(self.get_pid_file_name())
                  ip_wrapper = ip_lib.IPWrapper(namespace=self.namespace)
                  ip_wrapper.netns.execute(cmd, addl_env=self.cmd_addl_env)
--- 109,115 ----
          pid = self.pid
  
          if self.active:
!             if get_stop_command and self.namespace:
                  cmd = get_stop_command(self.get_pid_file_name())
                  ip_wrapper = ip_lib.IPWrapper(namespace=self.namespace)
                  ip_wrapper.netns.execute(cmd, addl_env=self.cmd_addl_env)
***************
*** 137,142 ****
--- 146,159 ----
          if pid is None:
              return False
  
+         if platform.system() == "SunOS":
+             cmd = ['/usr/bin/pargs', '-l', pid]
+             try:
+                 exec_out = utils.execute(cmd)
+             except RuntimeError:
+                 return False
+             return self.uuid in exec_out
+ 
          cmdline = '/proc/%s/cmdline' % pid
          try:
              with open(cmdline, "r") as f:
*** neutron-8.0.0/neutron/agent/linux/utils.py	2016-04-07 00:44:35.000000000 -0700
--- new/neutron/agent/linux/utils.py	2016-05-22 15:59:48.178297663 -0700
***************
*** 17,22 ****
--- 17,23 ----
  import glob
  import grp
  import os
+ import platform
  import pwd
  import shlex
  import socket
***************
*** 30,36 ****
  from eventlet import greenthread
  from oslo_config import cfg
  from oslo_log import log as logging
! from oslo_rootwrap import client
  from oslo_utils import excutils
  import six
  from six.moves import http_client as httplib
--- 31,40 ----
  from eventlet import greenthread
  from oslo_config import cfg
  from oslo_log import log as logging
! try:
!     from oslo_rootwrap import client
! except:
!     pass
  from oslo_utils import excutils
  import six
  from six.moves import http_client as httplib
***************
*** 184,191 ****
      """Retrieve a list of the pids of child processes of the given pid."""
  
      try:
!         raw_pids = execute(['ps', '--ppid', pid, '-o', 'pid='],
!                            log_fail_as_error=False)
      except RuntimeError as e:
          # Unexpected errors are the responsibility of the caller
          with excutils.save_and_reraise_exception() as ctxt:
--- 188,199 ----
      """Retrieve a list of the pids of child processes of the given pid."""
  
      try:
!         if platform.system() == "SunOS":
!             raw_pids = execute(['/usr/bin/pgrep', '-P', pid],
!                                log_fail_as_error=False)
!         else:
!             raw_pids = execute(['ps', '--ppid', pid, '-o', 'pid='],
!                                log_fail_as_error=False)
      except RuntimeError as e:
          # Unexpected errors are the responsibility of the caller
          with excutils.save_and_reraise_exception() as ctxt:
*** neutron-8.0.0/neutron/agent/dhcp_agent.py	2016-04-07 00:44:25.000000000 -0700
--- new/neutron/agent/dhcp_agent.py	2016-05-24 10:43:14.037828809 -0700
***************
*** 23,28 ****
--- 23,29 ----
  from neutron.agent.dhcp import config as dhcp_config
  from neutron.agent.linux import interface
  from neutron.agent.metadata import config as metadata_config
+ from neutron.agent.solaris import interface as solaris_interface
  from neutron.common import config as common_config
  from neutron.common import topics
  from neutron import service as neutron_service
***************
*** 37,43 ****
      conf.register_opts(dhcp_config.DNSMASQ_OPTS)
      conf.register_opts(metadata_config.DRIVER_OPTS)
      conf.register_opts(metadata_config.SHARED_OPTS)
!     conf.register_opts(interface.OPTS)
  
  
  def main():
--- 38,45 ----
      conf.register_opts(dhcp_config.DNSMASQ_OPTS)
      conf.register_opts(metadata_config.DRIVER_OPTS)
      conf.register_opts(metadata_config.SHARED_OPTS)
!     cfg.CONF.register_opts(interface.OPTS)
!     cfg.CONF.register_opts(solaris_interface.OPTS)
  
  
  def main():
*** neutron-8.0.0/neutron/agent/linux/dhcp.py	2016-04-07 00:44:35.000000000 -0700
--- new/neutron/agent/linux/dhcp.py	2016-05-24 10:42:44.985389698 -0700
***************
*** 16,21 ****
--- 16,22 ----
  import abc
  import collections
  import os
+ import platform
  import re
  import shutil
  import time
***************
*** 108,114 ****
      def __init__(self, d):
          super(NetModel, self).__init__(d)
  
!         self._ns_name = "%s%s" % (NS_PREFIX, self.id)
  
      @property
      def namespace(self):
--- 109,118 ----
      def __init__(self, d):
          super(NetModel, self).__init__(d)
  
!         if platform.system() == "SunOS":
!             self._ns_name = None
!         else:
!             self._ns_name = "%s%s" % (NS_PREFIX, self.id)
  
      @property
      def namespace(self):