src/lxc/lxc_wait.c

   1 /*
   2  * lxc: linux Container library
   3  *
   4  * (C) Copyright IBM Corp. 2007, 2008
   5  *
   6  * Authors:
   7  * Daniel Lezcano <daniel.lezcano at free.fr>
   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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  22  */
  23 #include <stdio.h>
  24 #include <string.h>
  25 #include <libgen.h>
  26 #include <unistd.h>
  27 #include <stdlib.h>
  28 #include <signal.h>
  29 #include <sys/types.h>
  30
  31 #include <lxc/lxc.h>
  32 #include <lxc/log.h>
  33 #include <lxc/lxccontainer.h>
  34 #include "arguments.h"
  35
  36 lxc_log_define(lxc_wait_ui, lxc_monitor);
  37
  38 static int my_checker(const struct lxc_arguments* args)
  39 {
  40         if (!args->states) {
  41                 lxc_error(args, "missing state option to wait for.");
  42                 return -1;
  43         }
  44         return 0;
  45 }
  46
  47 static int my_parser(struct lxc_arguments* args, int c, char* arg)
  48 {
  49         switch (c) {
  50         case 's': args->states = optarg; break;
  51         case 't': args->timeout = atol(optarg); break;
  52         }
  53         return 0;
  54 }
  55
  56 static const struct option my_longopts[] = {
  57         {"state", required_argument, 0, 's'},
  58         {"timeout", required_argument, 0, 't'},
  59         LXC_COMMON_OPTIONS
  60 };
  61
  62 static struct lxc_arguments my_args = {
  63         .progname = "lxc-wait",
  64         .help     = "\
  65 --name=NAME --state=STATE\n\
  66 \n\
  67 lxc-wait waits for NAME container state to reach STATE\n\
  68 \n\
  69 Options :\n\
  70   -n, --name=NAME   NAME for name of the container\n\
  71   -s, --state=STATE ORed states to wait for\n\
  72                     STOPPED, STARTING, RUNNING, STOPPING,\n\
  73                     ABORTING, FREEZING, FROZEN, THAWED\n\
  74   -t, --timeout=TMO Seconds to wait for state changes\n",
  75         .options  = my_longopts,
  76         .parser   = my_parser,
  77         .checker  = my_checker,
  78         .timeout = -1,
  79 };
  80
  81 int main(int argc, char *argv[])
  82 {
  83         struct lxc_container *c;
  84
  85         if (lxc_arguments_parse(&my_args, argc, argv))
  86                 return -1;
  87
  88         if (lxc_log_init(my_args.name, my_args.log_file, my_args.log_priority,
  89                          my_args.progname, my_args.quiet, my_args.lxcpath[0]))
  90                 return -1;
  91
  92         c = lxc_container_new(my_args.name, my_args.lxcpath[0]);
  93         if (!c)
  94                 return -1;
  95
  96         if (!c->wait(c, my_args.states, my_args.timeout)) {
  97                 lxc_container_put(c);
  98                 return -1;
  99         }
 100         return 0;
 101 }