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 #include <lxc/log.h>
  39
  40 lxc_log_define(lxc_start, lxc);
  41
  42 void usage(char *cmd)
  43 {
  44         fprintf(stderr, "%s <command>\n", basename(cmd));
  45         fprintf(stderr, "\t -n <name>   : name of the container\n");
  46         fprintf(stderr, "\t[-o <logfile>]    : path of the log file\n");
  47         fprintf(stderr, "\t[-l <logpriority>]: log level priority\n");
  48         _exit(1);
  49 }
  50
  51 int main(int argc, char *argv[])
  52 {
  53         char *name = NULL;
  54         const char *log_file = NULL, *log_priority = NULL;
  55         char **args;
  56         int opt, err = LXC_ERROR_INTERNAL, nbargs = 0;
  57         struct termios tios;
  58
  59         char *default_args[] = {
  60                 "/sbin/init",
  61                 '\0',
  62         };
  63
  64         while ((opt = getopt(argc, argv, "n:o:l:")) != -1) {
  65                 switch (opt) {
  66                 case 'n':
  67                         name = optarg;
  68                         break;
  69                 case 'o':
  70                         log_file = optarg;
  71                         break;
  72                 case 'l':
  73                         log_priority = optarg;
  74                         break;
  75                 }
  76
  77                 nbargs++;
  78         }
  79
  80         if (!argv[optind] || !strlen(argv[optind]))
  81                 args = default_args;
  82         else {
  83                 args = &argv[optind];
  84                 argc -= nbargs;
  85         }
  86
  87         if (!name)
  88                 usage(argv[0]);
  89
  90         if (lxc_log_init(log_file, log_priority, basename(argv[0])))
  91                 return 1;
  92
  93         if (tcgetattr(0, &tios)) {
  94                 ERROR("failed to get current terminal settings : %s",
  95                       strerror(errno));
  96                 return 1;
  97         }
  98
  99         err = lxc_start(name, args);
 100         if (err) {
 101                 ERROR("failed to start '%s'", name);
 102                 err = 1;
 103         }
 104
 105         if (tcsetattr(0, TCSAFLUSH, &tios))
 106                 ERROR("failed to restore terminal settings : %s",
 107                       strerror(errno));
 108
 109         return err;
 110 }
 111