mirror of
https://github.com/CumulusNetworks/ifupdown2.git
synced 2024-05-06 15:54:50 +00:00
c7c7ce8c4d
Signed-off-by: Andy Roulin <aroulin@nvidia.com> Signed-off-by: Julien Fortin <julien@cumulusnetworks.com>
139 lines
5.0 KiB
Python
139 lines
5.0 KiB
Python
#!/usr/bin/env python3
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#
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# Copyright 2014-2017 Cumulus Networks, Inc. All rights reserved.
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# Author: Roopa Prabhu, roopa@cumulusnetworks.com
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#
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import os
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import errno
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try:
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from ifupdown2.ifupdown.utils import utils
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from ifupdown2.ifupdownaddons.utilsbase import *
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except (ImportError, ModuleNotFoundError):
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from ifupdown.utils import utils
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from ifupdownaddons.utilsbase import *
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class dhclient(utilsBase):
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""" This class contains helper methods to interact with the dhclient
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utility """
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def _pid_exists(self, pidfilename):
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if os.path.exists(pidfilename):
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try:
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return os.readlink(
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"/proc/%s/exe" % self.read_file_oneline(pidfilename)
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).endswith("dhclient")
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except OSError as e:
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try:
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if e.errno == errno.EACCES:
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return os.path.exists("/proc/%s" % self.read_file_oneline(pidfilename))
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except Exception:
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return False
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except Exception:
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return False
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return False
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def is_running(self, ifacename):
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return self._pid_exists('/run/dhclient.%s.pid' %ifacename)
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def is_running6(self, ifacename):
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return self._pid_exists('/run/dhclient6.%s.pid' %ifacename)
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def _run_dhclient_cmd(self, cmd, cmd_prefix=None):
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if not cmd_prefix:
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cmd_aslist = []
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else:
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cmd_aslist = cmd_prefix.split()
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if cmd_aslist:
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cmd_aslist.extend(cmd)
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else:
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cmd_aslist = cmd
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utils.exec_commandl(cmd_aslist, stdout=None, stderr=None)
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def stop(self, ifacename, cmd_prefix=None):
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if os.path.exists('/sbin/dhclient3'):
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cmd = ['/sbin/dhclient3', '-x', '-pf',
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'/run/dhclient.%s.pid' %ifacename, '-lf',
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'/var/lib/dhcp3/dhclient.%s.leases' %ifacename,
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'%s' %ifacename]
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else:
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cmd = ['/sbin/dhclient', '-x', '-pf',
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'/run/dhclient.%s.pid' %ifacename,
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'-lf', '/var/lib/dhcp/dhclient.%s.leases' %ifacename,
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'%s' %ifacename]
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self._run_dhclient_cmd(cmd, cmd_prefix)
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def start(self, ifacename, wait=True, cmd_prefix=None):
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retries = 0
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out = "0"
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# wait if interface isn't up yet
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while '1' not in out and retries < 5:
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path = '/sys/class/net/%s/carrier' %ifacename
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out = self.read_file_oneline(path)
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if out is None:
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break # No sysfs file found for this iface
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retries += 1
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time.sleep(1)
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if os.path.exists('/sbin/dhclient3'):
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cmd = ['/sbin/dhclient3', '-pf',
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'/run/dhclient.%s.pid' %ifacename,
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'-lf', '/var/lib/dhcp3/dhclient.%s.leases' %ifacename,
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'%s' %ifacename]
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else:
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cmd = ['/sbin/dhclient', '-pf',
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'/run/dhclient.%s.pid' %ifacename, '-lf',
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'/var/lib/dhcp/dhclient.%s.leases' %ifacename,
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'%s' %ifacename]
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if not wait:
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cmd.append('-nw')
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self._run_dhclient_cmd(cmd, cmd_prefix)
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def release(self, ifacename, cmd_prefix=None):
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if os.path.exists('/sbin/dhclient3'):
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cmd = ['/sbin/dhclient3', '-r', '-pf',
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'/run/dhclient.%s.pid' %ifacename, '-lf',
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'/var/lib/dhcp3/dhclient.%s.leases' %ifacename,
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'%s' %ifacename]
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else:
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cmd = ['/sbin/dhclient', '-r', '-pf',
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'/run/dhclient.%s.pid' %ifacename,
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'-lf', '/var/lib/dhcp/dhclient.%s.leases' %ifacename,
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'%s' %ifacename]
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self._run_dhclient_cmd(cmd, cmd_prefix)
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def start6(self, ifacename, wait=True, cmd_prefix=None, duid=None):
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cmd = ['/sbin/dhclient', '-6', '-pf',
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'/run/dhclient6.%s.pid' %ifacename, '-lf',
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'/var/lib/dhcp/dhclient6.%s.leases' % ifacename,
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'%s' %ifacename]
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if not wait:
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cmd.append('-nw')
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if duid is not None:
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cmd.append('-D')
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cmd.append(duid)
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self._run_dhclient_cmd(cmd, cmd_prefix)
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def stop6(self, ifacename, cmd_prefix=None, duid=None):
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cmd = ['/sbin/dhclient', '-6', '-x', '-pf',
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'/run/dhclient6.%s.pid' % ifacename, '-lf',
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'/var/lib/dhcp/dhclient6.%s.leases' % ifacename,
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'%s' %ifacename]
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if duid is not None:
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cmd.append('-D')
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cmd.append(duid)
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self._run_dhclient_cmd(cmd, cmd_prefix)
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def release6(self, ifacename, cmd_prefix=None, duid=None):
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cmd = ['/sbin/dhclient', '-6', '-r', '-pf',
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'/run/dhclient6.%s.pid' %ifacename,
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'-lf', '/var/lib/dhcp/dhclient6.%s.leases' % ifacename,
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'%s' %ifacename]
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if duid is not None:
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cmd.append('-D')
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cmd.append(duid)
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self._run_dhclient_cmd(cmd, cmd_prefix)
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