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
  24 #ifndef _GNU_SOURCE
  25 #define _GNU_SOURCE 1
  26 #endif
  27 #include <libgen.h>
  28 #include <stdio.h>
  29 #include <string.h>
  30 #include <sys/types.h>
  31 #include <unistd.h>
  32
  33 #include <lxc/lxccontainer.h>
  34
  35 #include "arguments.h"
  36 #include "config.h"
  37 #include "log.h"
  38
  39 lxc_log_define(lxc_freeze, lxc);
  40
  41 static const struct option my_longopts[] = {
  42         LXC_COMMON_OPTIONS
  43 };
  44
  45 static struct lxc_arguments my_args = {
  46         .progname     = "lxc-freeze",
  47         .help         = "\
  48 --name=NAME\n\
  49 \n\
  50 lxc-freeze freezes a container with the identifier NAME\n\
  51 \n\
  52 Options :\n\
  53   -n, --name=NAME      NAME of the container\n\
  54   --rcfile=FILE        Load configuration file FILE\n",
  55         .options      = my_longopts,
  56         .parser       = NULL,
  57         .checker      = NULL,
  58         .log_priority = "ERROR",
  59         .log_file     = "none",
  60 };
  61
  62 int main(int argc, char *argv[])
  63 {
  64         struct lxc_container *c;
  65         struct lxc_log log;
  66
  67         if (lxc_arguments_parse(&my_args, argc, argv))
  68                 exit(EXIT_FAILURE);
  69
  70         log.name = my_args.name;
  71         log.file = my_args.log_file;
  72         log.level = my_args.log_priority;
  73         log.prefix = my_args.progname;
  74         log.quiet = my_args.quiet;
  75         log.lxcpath = my_args.lxcpath[0];
  76
  77         if (lxc_log_init(&log))
  78                 exit(EXIT_FAILURE);
  79
  80         c = lxc_container_new(my_args.name, my_args.lxcpath[0]);
  81         if (!c) {
  82                 ERROR("No such container: %s:%s", my_args.lxcpath[0], my_args.name);
  83                 exit(EXIT_FAILURE);
  84         }
  85
  86         if (my_args.rcfile) {
  87                 c->clear_config(c);
  88
  89                 if (!c->load_config(c, my_args.rcfile)) {
  90                         ERROR("Failed to load rcfile");
  91                         lxc_container_put(c);
  92                         exit(EXIT_FAILURE);
  93                 }
  94
  95                 c->configfile = strdup(my_args.rcfile);
  96                 if (!c->configfile) {
  97                         ERROR("Out of memory setting new config filename");
  98                         lxc_container_put(c);
  99                         exit(EXIT_FAILURE);
 100                 }
 101         }
 102
 103         if (!c->may_control(c)) {
 104                 ERROR("Insufficent privileges to control %s:%s", my_args.lxcpath[0], my_args.name);
 105                 lxc_container_put(c);
 106                 exit(EXIT_FAILURE);
 107         }
 108
 109         if (!c->freeze(c)) {
 110                 ERROR("Failed to freeze %s:%s", my_args.lxcpath[0], my_args.name);
 111                 lxc_container_put(c);
 112                 exit(EXIT_FAILURE);
 113         }
 114
 115         lxc_container_put(c);
 116
 117         exit(EXIT_SUCCESS);
 118 }