src/lxc/tools/lxc_freeze.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 <unistd.h>
  25 #include <sys/types.h>
  26 #include <libgen.h>
  27 #include <string.h>
  28
  29 #include <lxc/lxccontainer.h>
  30
  31 #include "lxc.h"
  32 #include "log.h"
  33
  34 #include "arguments.h"
  35
  36 lxc_log_define(lxc_freeze_ui, lxc);
  37
  38 static const struct option my_longopts[] = {
  39         LXC_COMMON_OPTIONS
  40 };
  41
  42 static struct lxc_arguments my_args = {
  43         .progname = "lxc-freeze",
  44         .help     = "\
  45 --name=NAME\n\
  46 \n\
  47 lxc-freeze freezes a container with the identifier NAME\n\
  48 \n\
  49 Options :\n\
  50   -n, --name=NAME      NAME of the container\n\
  51   --rcfile=FILE        Load configuration file FILE\n",
  52         .options  = my_longopts,
  53         .parser   = NULL,
  54         .checker  = NULL,
  55 };
  56
  57 int main(int argc, char *argv[])
  58 {
  59         struct lxc_container *c;
  60         struct lxc_log log;
  61
  62         if (lxc_arguments_parse(&my_args, argc, argv))
  63                 exit(EXIT_FAILURE);
  64
  65         if (!my_args.log_file)
  66                 my_args.log_file = "none";
  67
  68         log.name = my_args.name;
  69         log.file = my_args.log_file;
  70         log.priority = my_args.log_priority;
  71         log.prefix = my_args.progname;
  72         log.quiet = my_args.quiet;
  73         log.lxcpath = my_args.lxcpath[0];
  74
  75         if (lxc_log_init(&log))
  76                 exit(EXIT_FAILURE);
  77         lxc_log_options_no_override();
  78
  79         c = lxc_container_new(my_args.name, my_args.lxcpath[0]);
  80         if (!c) {
  81                 ERROR("No such container: %s:%s", my_args.lxcpath[0], my_args.name);
  82                 exit(EXIT_FAILURE);
  83         }
  84
  85         if (my_args.rcfile) {
  86                 c->clear_config(c);
  87                 if (!c->load_config(c, my_args.rcfile)) {
  88                         ERROR("Failed to load rcfile");
  89                         lxc_container_put(c);
  90                         exit(EXIT_FAILURE);
  91                 }
  92                 c->configfile = strdup(my_args.rcfile);
  93                 if (!c->configfile) {
  94                         ERROR("Out of memory setting new config filename");
  95                         lxc_container_put(c);
  96                         exit(EXIT_FAILURE);
  97                 }
  98         }
  99
 100         if (!c->may_control(c)) {
 101                 ERROR("Insufficent privileges to control %s:%s", my_args.lxcpath[0], my_args.name);
 102                 lxc_container_put(c);
 103                 exit(EXIT_FAILURE);
 104         }
 105
 106         if (!c->freeze(c)) {
 107                 ERROR("Failed to freeze %s:%s", my_args.lxcpath[0], my_args.name);
 108                 lxc_container_put(c);
 109                 exit(EXIT_FAILURE);
 110         }
 111
 112         lxc_container_put(c);
 113
 114         exit(EXIT_SUCCESS);
 115 }