release/src/router/bridge/brctl/brctl.c

   1 /*
   2  * Copyright (C) 2000 Lennert Buytenhek
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License as
   6  * published by the Free Software Foundation; either version 2 of the
   7  * License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17  */
  18
  19 #include <stdio.h>
  20 #include <stdlib.h>
  21 #include <string.h>
  22 #include <sys/errno.h>
  23 #include <getopt.h>
  24
  25 #include "libbridge.h"
  26 #include "config.h"
  27
  28 #include "brctl.h"
  29
  30 static void help()
  31 {
  32         printf("Usage: brctl [commands]\n");
  33         printf("commands:\n");
  34         command_helpall();
  35 }
  36
  37 int main(int argc, char *const* argv)
  38 {
  39         const struct command *cmd;
  40         int f;
  41         static const struct option options[] = {
  42                 { .name = "help", .val = 'h' },
  43                 { .name = "version", .val = 'V' },
  44                 { 0 }
  45         };
  46
  47         while ((f = getopt_long(argc, argv, "Vh", options, NULL)) != EOF)
  48                 switch(f) {
  49                 case 'h':
  50                         help();
  51                         return 0;
  52                 case 'V':
  53                         printf("%s, %s\n", PACKAGE_NAME, PACKAGE_VERSION);
  54                         return 0;
  55                 default:
  56                         fprintf(stderr, "Unknown option '%c'\n", f);
  57                         goto help;
  58                 }
  59
  60         if (argc == optind)
  61                 goto help;
  62
  63         if (br_init()) {
  64                 fprintf(stderr, "can't setup bridge control: %s\n",
  65                         strerror(errno));
  66                 return 1;
  67         }
  68
  69         argc -= optind;
  70         argv += optind;
  71         if ((cmd = command_lookup(*argv)) == NULL) {
  72                 fprintf(stderr, "never heard of command [%s]\n", argv[1]);
  73                 goto help;
  74         }
  75
  76         if (argc < cmd->nargs + 1) {
  77                 printf("Incorrect number of arguments for command\n");
  78                 printf("Usage: brctl %s %s\n", cmd->name, cmd->help);
  79                 return 1;
  80         }
  81
  82         return cmd->func(argc, argv);
  83
  84 help:
  85         help();
  86         return 1;
  87 }