src/lxc/lxc_start.c

   1 /*
   2  * lxc: linux Container library
   3  *
   4  * (C) Copyright IBM Corp. 2007, 2008
   5  *
   6  * Authors:
   7  * Daniel Lezcano <dlezcano at fr.ibm.com>
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  22  */
  23 #include <stdio.h>
  24 #include <libgen.h>
  25 #include <unistd.h>
  26 #include <string.h>
  27 #include <termios.h>
  28 #include <errno.h>
  29 #include <sys/param.h>
  30 #include <sys/utsname.h>
  31 #include <sys/types.h>
  32 #include <sys/socket.h>
  33 #include <arpa/inet.h>
  34 #include <netinet/in.h>
  35 #include <net/if.h>
  36
  37 #include <lxc/lxc.h>
  38
  39 void usage(char *cmd)
  40 {
  41         fprintf(stderr, "%s <command>\n", basename(cmd));
  42         fprintf(stderr, "\t -n <name>   : name of the container\n");
  43         _exit(1);
  44 }
  45
  46 int main(int argc, char *argv[])
  47 {
  48         char opt;
  49         char *name = NULL;
  50         char **args;
  51         int err = LXC_ERROR_INTERNAL, nbargs = 0;
  52         struct termios tios;
  53
  54         char *default_args[] = {
  55                 "/sbin/init",
  56                 '\0',
  57         };
  58
  59         while ((opt = getopt(argc, argv, "n:")) != -1) {
  60                 switch (opt) {
  61                 case 'n':
  62                         name = optarg;
  63                         break;
  64                 }
  65
  66                 nbargs++;
  67         }
  68
  69         if (!argv[optind] || !strlen(argv[optind]))
  70                 args = default_args;
  71         else {
  72                 args = &argv[optind];
  73                 argc -= nbargs;
  74         }
  75
  76         if (!name)
  77                 usage(argv[0]);
  78
  79         if (tcgetattr(0, &tios)) {
  80                 lxc_log_error("failed to get current terminal settings");
  81                 fprintf(stderr, "%s\n", lxc_strerror(err));
  82                 return 1;
  83         }
  84
  85         err = lxc_start(name, args);
  86         if (err) {
  87                 fprintf(stderr, "%s\n", lxc_strerror(err));
  88                 err = 1;
  89         }
  90
  91         if (tcsetattr(0, TCSAFLUSH, &tios))
  92                 lxc_log_syserror("failed to restore terminal attributes");
  93
  94         return err;
  95 }
  96