bridge/bridge.c

   1 /*
   2  * Get/set/delete bridge with netlink
   3  *
   4  * Authors:     Stephen Hemminger <shemminger@vyatta.com>
   5  */
   6
   7 #include <stdio.h>
   8 #include <stdlib.h>
   9 #include <unistd.h>
  10 #include <sys/socket.h>
  11 #include <string.h>
  12
  13 #include "SNAPSHOT.h"
  14 #include "utils.h"
  15 #include "br_common.h"
  16
  17 struct rtnl_handle rth = { .fd = -1 };
  18 int resolve_hosts;
  19 int show_stats;
  20 int show_details;
  21 int timestamp;
  22
  23 static void usage(void) __attribute__((noreturn));
  24
  25 static void usage(void)
  26 {
  27         fprintf(stderr,
  28 "Usage: br [ OPTIONS ] OBJECT { COMMAND | help }\n"
  29 "where  OBJECT := { fdb |  monitor }\n"
  30 "       OPTIONS := { -V[ersion] | -s[tatistics] | -d[etails]\n" );
  31         exit(-1);
  32 }
  33
  34 static int do_help(int argc, char **argv)
  35 {
  36         usage();
  37 }
  38
  39
  40 static const struct cmd {
  41         const char *cmd;
  42         int (*func)(int argc, char **argv);
  43 } cmds[] = {
  44         { "fdb",        do_fdb },
  45         { "monitor",    do_monitor },
  46         { "help",       do_help },
  47         { 0 }
  48 };
  49
  50 static int do_cmd(const char *argv0, int argc, char **argv)
  51 {
  52         const struct cmd *c;
  53
  54         for (c = cmds; c->cmd; ++c) {
  55                 if (matches(argv0, c->cmd) == 0)
  56                         return c->func(argc-1, argv+1);
  57         }
  58
  59         fprintf(stderr, "Object \"%s\" is unknown, try \"br help\".\n", argv0);
  60         return -1;
  61 }
  62
  63 int
  64 main(int argc, char **argv)
  65 {
  66         while (argc > 1) {
  67                 char *opt = argv[1];
  68                 if (strcmp(opt,"--") == 0) {
  69                         argc--; argv++;
  70                         break;
  71                 }
  72                 if (opt[0] != '-')
  73                         break;
  74                 if (opt[1] == '-')
  75                         opt++;
  76
  77                 if (matches(opt, "-help") == 0) {
  78                         usage();
  79                 } else if (matches(opt, "-Version") == 0) {
  80                         printf("br utility, 0.0\n");
  81                         exit(0);
  82                 } else if (matches(opt, "-stats") == 0 ||
  83                            matches(opt, "-statistics") == 0) {
  84                         ++show_stats;
  85                 } else if (matches(opt, "-details") == 0) {
  86                         ++show_details;
  87                 } else if (matches(opt, "-timestamp") == 0) {
  88                         ++timestamp;
  89                 } else {
  90                         fprintf(stderr, "Option \"%s\" is unknown, try \"br -help\".\n", opt);
  91                         exit(-1);
  92                 }
  93                 argc--; argv++;
  94         }
  95
  96         if (rtnl_open(&rth, 0) < 0)
  97                 exit(1);
  98
  99         if (argc > 1)
 100                 return do_cmd(argv[1], argc-1, argv+1);
 101
 102         rtnl_close(&rth);
 103         usage();
 104 }