mirror of
https://github.com/CumulusNetworks/ifupdown2.git
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97382e8841
Ticket: CM-4204 Reviewed By: Testing Done: Tested ifreload with interfaces file in the bug My last checkin moved the auto flag around causing the breakage
473 lines
20 KiB
Python
Executable File
473 lines
20 KiB
Python
Executable File
#!/usr/bin/python
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#
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# Copyright 2014 Cumulus Networks, Inc. All rights reserved.
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# Author: Roopa Prabhu, roopa@cumulusnetworks.com
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#
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# ifupdown --
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# tool to configure network interfaces
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#
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import sys
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import os
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import argcomplete
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import argparse
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import ConfigParser
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import StringIO
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import logging
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import logging.handlers
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import resource
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from ifupdown.ifupdownmain import *
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from ifupdown.utils import *
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lockfile="/run/network/.lock"
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configfile="/etc/network/ifupdown2/ifupdown2.conf"
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configmap_g=None
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logger = None
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interfacesfileiobuf=None
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ENVPATH = "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
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def run_up(args):
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logger.debug('args = %s' %str(args))
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try:
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iflist = args.iflist
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if len(args.iflist) == 0:
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iflist = None
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logger.debug('creating ifupdown object ..')
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cachearg=(False if (iflist or args.nocache or
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args.perfmode or args.noact)
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else True)
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ifupdown_handle = ifupdownMain(config=configmap_g,
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force=args.force,
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withdepends=args.withdepends,
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perfmode=args.perfmode,
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dryrun=args.noact,
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cache=cachearg,
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addons_enable=not args.noaddons,
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statemanager_enable=not args.noaddons,
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interfacesfile=args.interfacesfile,
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interfacesfileiobuf=interfacesfileiobuf,
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interfacesfileformat=args.interfacesfileformat)
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if args.noaddons:
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ifupdown_handle.up(['up'], args.all, args.CLASS, iflist,
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excludepats=args.excludepats,
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printdependency=args.printdependency,
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syntaxcheck=args.syntaxcheck, type=args.type)
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else:
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ifupdown_handle.up(['pre-up', 'up', 'post-up'],
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args.all, args.CLASS, iflist,
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excludepats=args.excludepats,
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printdependency=args.printdependency,
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syntaxcheck=args.syntaxcheck, type=args.type)
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except:
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raise
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def run_down(args):
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logger.debug('args = %s' %str(args))
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try:
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iflist = args.iflist
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logger.debug('creating ifupdown object ..')
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ifupdown_handle = ifupdownMain(config=configmap_g, force=args.force,
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withdepends=args.withdepends,
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perfmode=args.perfmode,
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dryrun=args.noact,
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addons_enable=not args.noaddons,
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statemanager_enable=not args.noaddons,
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interfacesfile=args.interfacesfile,
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interfacesfileiobuf=interfacesfileiobuf,
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interfacesfileformat=args.interfacesfileformat)
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ifupdown_handle.down(['pre-down', 'down', 'post-down'],
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args.all, args.CLASS, iflist,
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excludepats=args.excludepats,
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printdependency=args.printdependency,
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usecurrentconfig=args.usecurrentconfig,
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type=args.type)
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except:
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raise
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def run_query(args):
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logger.debug('args = %s' %str(args))
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try:
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iflist = args.iflist
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if args.checkcurr:
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qop='query-checkcurr'
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elif args.running:
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qop='query-running'
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elif args.raw:
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qop='query-raw'
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elif args.syntaxhelp:
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qop = 'query-syntax'
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elif args.printdependency:
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qop = 'query-dependency'
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elif args.printsavedstate:
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qop = 'query-savedstate'
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else:
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qop='query'
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cachearg=(False if (iflist or args.nocache or
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args.perfmode or args.syntaxhelp or
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(qop != 'query-checkcurr' and
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qop != 'query-running')) else True)
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if not iflist and qop == 'query-running':
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iflist = [i for i in os.listdir('/sys/class/net/')
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if os.path.isdir('/sys/class/net/%s' %i)]
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logger.debug('creating ifupdown object ..')
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ifupdown_handle = ifupdownMain(config=configmap_g,
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withdepends=args.withdepends,
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perfmode=args.perfmode,
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cache=cachearg,
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interfacesfile=args.interfacesfile,
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interfacesfileiobuf=interfacesfileiobuf,
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interfacesfileformat=args.interfacesfileformat)
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ifupdown_handle.query([qop], args.all, args.CLASS, iflist,
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excludepats=args.excludepats,
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printdependency=args.printdependency,
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format=args.format, type=args.type)
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except:
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raise
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def run_reload(args):
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logger.debug('args = %s' %str(args))
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try:
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logger.debug('creating ifupdown object ..')
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ifupdown_handle = ifupdownMain(config=configmap_g,
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withdepends=args.withdepends,
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perfmode=args.perfmode)
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ifupdown_handle.reload(['pre-up', 'up', 'post-up'],
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['pre-down', 'down', 'post-down'],
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auto=args.all, allow=None, ifacenames=None,
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excludepats=args.excludepats,
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usecurrentconfig=args.usecurrentconfig,
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currentlyup=args.currentlyup)
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except:
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raise
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def init(args):
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global logger
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global interfacesfileiobuf
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log_level = logging.WARNING
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if args.verbose:
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log_level = logging.INFO
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if args.debug:
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log_level = logging.DEBUG
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try:
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if hasattr(args, 'syslog') and args.syslog:
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root_logger = logging.getLogger()
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syslog_handler = logging.handlers.SysLogHandler(address='/dev/log',
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facility=logging.handlers.SysLogHandler.LOG_DAEMON)
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logging.addLevelName(logging.ERROR, 'error')
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logging.addLevelName(logging.WARNING, 'warning')
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logging.addLevelName(logging.DEBUG, 'debug')
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logging.addLevelName(logging.INFO, 'info')
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root_logger.setLevel(log_level)
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syslog_handler.setFormatter(logging.Formatter(
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'%(name)s: %(levelname)s: %(message)s'))
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root_logger.addHandler(syslog_handler)
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logger = logging.getLogger('ifupdown')
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else:
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logging.basicConfig(level=log_level,
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format='%(levelname)s: %(message)s')
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logging.addLevelName(logging.ERROR, 'error')
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logging.addLevelName(logging.WARNING, 'warning')
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logging.addLevelName(logging.DEBUG, 'debug')
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logging.addLevelName(logging.INFO, 'info')
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logger = logging.getLogger('ifupdown')
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except:
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raise
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# If interfaces file is stdin, read
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if hasattr(args, 'interfacesfile') and args.interfacesfile == '-':
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interfacesfileiobuf = sys.stdin.read()
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def deinit():
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{}
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def update_argparser(argparser):
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""" base parser, common to all commands """
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argparser.add_argument('-a', '--all', action='store_true', required=False,
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help='process all interfaces marked \"auto\"')
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argparser.add_argument('iflist', metavar='IFACE',
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nargs='*', help='interface list separated by spaces. ' +
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'IFACE list is mutually exclusive with -a option.')
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argparser.add_argument('-v', '--verbose', dest='verbose',
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action='store_true', help='verbose')
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argparser.add_argument('-d', '--debug', dest='debug',
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action='store_true',
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help='output debug info')
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argparser.add_argument('-q', '--quiet', dest='quiet',
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action='store_true',
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help=argparse.SUPPRESS)
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argparser.add_argument('--allow', dest='CLASS',
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help='ignore non-\"allow-CLASS\" interfaces')
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argparser.add_argument('-w', '--with-depends', dest='withdepends',
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action='store_true', help='run with all dependent interfaces.'+
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' This option is redundant when \'-a\' is specified. With ' +
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'\'-a\' interfaces are always executed in dependency order')
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argparser.add_argument('--perfmode', dest='perfmode',
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action='store_true', help=argparse.SUPPRESS)
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#argparser.add_argument('-j', '--jobs', dest='jobs', type=int,
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# default=-1, choices=range(1,12), help=argparse.SUPPRESS)
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argparser.add_argument('--nocache', dest='nocache', action='store_true',
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help=argparse.SUPPRESS)
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argparser.add_argument('-X', '--exclude', dest='excludepats',
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action='append',
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help='Exclude interfaces from the list of interfaces' +
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' to operate on. Can be specified multiple times.')
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argparser.add_argument('-i', '--interfaces', dest='interfacesfile',
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default='/etc/network/interfaces',
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help='use interfaces file instead of default ' +
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'/etc/network/interfaces')
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argparser.add_argument('-t', '--interfaces-format',
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dest='interfacesfileformat',
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default='native',
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choices=['native', 'json'],
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help='interfaces file format')
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argparser.add_argument('-T', '--type',
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dest='type',
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default=None,
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choices=['iface', 'vlan'],
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help='type of interface entry (iface or vlan).' +
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'This option can be used in case of ambiguity between ' +
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'a vlan interface and an iface interface of the same name')
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def update_ifupdown_argparser(argparser):
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""" common arg parser for ifup and ifdown """
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argparser.add_argument('-f', '--force', dest='force',
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action='store_true',
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help='force run all operations')
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argparser.add_argument('-l', '--syslog', dest='syslog',
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action='store_true',
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help=argparse.SUPPRESS)
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group = argparser.add_mutually_exclusive_group(required=False)
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group.add_argument('-n', '--no-act', dest='noact',
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action='store_true', help='print out what would happen,' +
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'but don\'t do it')
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group.add_argument('-p', '--print-dependency',
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dest='printdependency', choices=['list', 'dot'],
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help='print iface dependency')
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group.add_argument('--no-scripts', '--admin-state',
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dest='noaddons', action='store_true',
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help='dont run any addon modules/scripts. Only bring the ' +
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'interface administratively up/down')
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def update_ifup_argparser(argparser):
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argparser.add_argument('-s', '--syntax-check', dest='syntaxcheck',
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action='store_true',
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help='Only run the interfaces file parser')
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update_ifupdown_argparser(argparser)
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def update_ifdown_argparser(argparser):
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update_ifupdown_argparser(argparser)
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argparser.add_argument('-u', '--use-current-config',
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dest='usecurrentconfig', action='store_true',
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help='By default ifdown looks at the saved state for ' +
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'interfaces to bring down. This option allows ifdown to ' +
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'look at the current interfaces file. Useful when your ' +
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'state file is corrupted or you want down to use the latest '
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'from the interfaces file')
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def update_ifquery_argparser(argparser):
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""" arg parser for ifquery options """
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# -l is same as '-a', only here for backward compatibility
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argparser.add_argument('-l', '--list', action='store_true', dest='all',
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help=argparse.SUPPRESS)
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group = argparser.add_mutually_exclusive_group(required=False)
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group.add_argument('-r', '--running', dest='running',
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action='store_true',
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help='query running state of an interface')
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group.add_argument('-c', '--check', dest='checkcurr',
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action='store_true',
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help='check interface file contents against ' +
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'running state of an interface')
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group.add_argument('-x', '--raw', action='store_true', dest='raw',
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help='print raw config file entries')
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group.add_argument('--print-savedstate', action='store_true',
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dest='printsavedstate',
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help=argparse.SUPPRESS)
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argparser.add_argument('-o', '--format', dest='format', default='native',
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choices=['native', 'json'],
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help='interface display format')
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argparser.add_argument('-p', '--print-dependency',
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dest='printdependency', choices=['list', 'dot'],
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help='print interface dependency')
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argparser.add_argument('-s', '--syntax-help', action='store_true',
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dest='syntaxhelp',
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help='print supported interface config syntax')
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def update_ifreload_argparser(argparser):
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""" parser for ifreload """
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group = argparser.add_mutually_exclusive_group(required=True)
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group.add_argument('-a', '--all', action='store_true',
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help='process all interfaces marked \"auto\"')
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group.add_argument('-c', '--currently-up', dest='currentlyup',
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action='store_true',
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help='only reload auto and other interfaces that are ' +
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'currently up')
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argparser.add_argument('iflist', metavar='IFACE',
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nargs='*', help=argparse.SUPPRESS)
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argparser.add_argument('-n', '--no-act', dest='noact',
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action='store_true', help=argparse.SUPPRESS)
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argparser.add_argument('-v', '--verbose', dest='verbose',
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action='store_true', help='verbose')
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argparser.add_argument('-d', '--debug', dest='debug',
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action='store_true',
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help='output debug info')
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argparser.add_argument('-w', '--with-depends', dest='withdepends',
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action='store_true', help=argparse.SUPPRESS)
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argparser.add_argument('--perfmode', dest='perfmode',
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action='store_true', help=argparse.SUPPRESS)
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argparser.add_argument('--nocache', dest='nocache', action='store_true',
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help=argparse.SUPPRESS)
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argparser.add_argument('-X', '--exclude', dest='excludepats',
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action='append',
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help=argparse.SUPPRESS)
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#argparser.add_argument('-j', '--jobs', dest='jobs', type=int,
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# default=-1, choices=range(1,12), help=argparse.SUPPRESS)
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#argparser.add_argument('-i', '--interfaces', dest='interfacesfile',
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# default='/etc/network/interfaces',
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# help='use interfaces file instead of default ' +
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# '/etc/network/interfaces')
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argparser.add_argument('-u', '--use-current-config',
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dest='usecurrentconfig', action='store_true',
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help='By default ifreload looks at saved state for ' +
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'interfaces to bring down. With this option ifreload will'
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' only look at the current interfaces file. Useful when your ' +
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'state file is corrupted or you want down to use the latest '
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'from the interfaces file')
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argparser.add_argument('-l', '--syslog', dest='syslog',
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action='store_true',
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help=argparse.SUPPRESS)
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def parse_args(argsv, op):
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if op == 'query':
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descr = 'query interfaces (all or interface list)'
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elif op == 'reload':
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descr = 'reload interface configuration.'
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else:
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descr = 'interface management'
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argparser = argparse.ArgumentParser(description=descr)
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if op == 'reload':
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update_ifreload_argparser(argparser)
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else:
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update_argparser(argparser)
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if op == 'up':
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update_ifup_argparser(argparser)
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elif op == 'down':
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update_ifdown_argparser(argparser)
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elif op == 'query':
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update_ifquery_argparser(argparser)
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elif op == 'reload':
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update_ifreload_argparser(argparser)
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argcomplete.autocomplete(argparser)
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return argparser.parse_args(argsv)
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handlers = {'up' : run_up,
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'down' : run_down,
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'query' : run_query,
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'reload' : run_reload }
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def validate_args(op, args):
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#if op == 'up' and args.syntaxcheck:
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# if args.iflist or args.all:
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# print 'ignoring interface options ..'
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# return True
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if op == 'query' and args.syntaxhelp:
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return True
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if op == 'reload':
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if not args.all and not args.currentlyup:
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print '\'-a\' or \'-c\' option is required'
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return False
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elif (not args.iflist and
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not args.all and not args.CLASS):
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print '\'-a\' option or interface list are required'
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return False
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if args.iflist and args.all:
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print '\'-a\' option and interface list are mutually exclusive'
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return False
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if op != 'reload' and args.CLASS and (args.all or args.iflist):
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print ('\'--allow\' option is mutually exclusive ' +
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'with interface list and \'-a\'')
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return False
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return True
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def read_config():
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global configmap_g
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config = open(configfile, 'r').read()
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configStr = '[ifupdown2]\n' + config
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configFP = StringIO.StringIO(configStr)
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parser = ConfigParser.RawConfigParser()
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parser.readfp(configFP)
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configmap_g = dict(parser.items('ifupdown2'))
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# Preprocess config map
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configval = configmap_g.get('multiple_vlan_aware_bridge_support', '0')
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if configval == '0':
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# if multiple bridges not allowed, set the bridge-vlan-aware
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# attribute in the 'no_repeats' config, so that the ifupdownmain
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# module can catch it appropriately
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configmap_g['no_repeats'] = {'bridge-vlan-aware' : 'yes'}
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def main(argv):
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""" main function """
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args = None
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try:
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op = None
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if argv[0].endswith('ifup'):
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op = 'up'
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elif argv[0].endswith('ifdown'):
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op = 'down'
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elif argv[0].endswith('ifquery'):
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op = 'query'
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elif argv[0].endswith('ifreload'):
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op = 'reload'
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else:
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print ('Unexpected executable.' +
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' Should be \'ifup\' or \'ifdown\' or \'ifquery\'')
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exit(1)
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# Command line arg parser
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args = parse_args(argv[1:], op)
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if not validate_args(op, args):
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exit(1)
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if not sys.argv[0].endswith('ifquery') and not os.geteuid() == 0:
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print 'error: must be root to run this command'
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exit(1)
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if not sys.argv[0].endswith('ifquery') and not utils.lockFile(lockfile):
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print 'Another instance of this program is already running.'
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exit(0)
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read_config()
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init(args)
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handlers.get(op)(args)
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except Exception, e:
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if not str(e):
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exit(1)
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if args and args.debug:
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raise
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else:
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if logger:
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logger.error(str(e))
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else:
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print str(e)
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#if args and not args.debug:
|
|
# print '\nrerun the command with \'-d\' for a detailed errormsg'
|
|
exit(1)
|
|
finally:
|
|
deinit()
|
|
|
|
if __name__ == "__main__":
|
|
|
|
# required during boot
|
|
os.putenv('PATH', ENVPATH)
|
|
resource.setrlimit(resource.RLIMIT_CORE, (0,0))
|
|
main(sys.argv)
|