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lxc_wait.c
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lxc_wait.c
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/*
* lxc: linux Container library
*
* (C) Copyright IBM Corp. 2007, 2008
*
* Authors:
* Daniel Lezcano <daniel.lezcano at free.fr>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#define _GNU_SOURCE
#include <stdio.h>
#include <string.h>
#include <libgen.h>
#include <unistd.h>
#include <stdlib.h>
#include <signal.h>
#include <sys/types.h>
#include <lxc/lxccontainer.h>
#include "arguments.h"
#include "tool_utils.h"
static int my_checker(const struct lxc_arguments* args)
{
if (!args->states) {
lxc_error(args, "missing state option to wait for.");
return -1;
}
return 0;
}
static int my_parser(struct lxc_arguments* args, int c, char* arg)
{
switch (c) {
case 's': args->states = optarg; break;
case 't': args->timeout = atol(optarg); break;
}
return 0;
}
static const struct option my_longopts[] = {
{"state", required_argument, 0, 's'},
{"timeout", required_argument, 0, 't'},
LXC_COMMON_OPTIONS
};
static struct lxc_arguments my_args = {
.progname = "lxc-wait",
.help = "\
--name=NAME --state=STATE\n\
\n\
lxc-wait waits for NAME container state to reach STATE\n\
\n\
Options :\n\
-n, --name=NAME NAME of the container\n\
-s, --state=STATE ORed states to wait for\n\
STOPPED, STARTING, RUNNING, STOPPING,\n\
ABORTING, FREEZING, FROZEN, THAWED\n\
-t, --timeout=TMO Seconds to wait for state changes\n\
--rcfile=FILE Load configuration file FILE\n",
.options = my_longopts,
.parser = my_parser,
.checker = my_checker,
.timeout = -1,
};
int main(int argc, char *argv[])
{
struct lxc_container *c;
struct lxc_log log;
if (lxc_arguments_parse(&my_args, argc, argv))
exit(EXIT_FAILURE);
if (!my_args.log_file)
my_args.log_file = "none";
log.name = my_args.name;
log.file = my_args.log_file;
log.level = my_args.log_priority;
log.prefix = my_args.progname;
log.quiet = my_args.quiet;
log.lxcpath = my_args.lxcpath[0];
if (lxc_log_init(&log))
exit(EXIT_FAILURE);
/* REMOVE IN LXC 3.0 */
setenv("LXC_UPDATE_CONFIG_FORMAT", "1", 0);
c = lxc_container_new(my_args.name, my_args.lxcpath[0]);
if (!c)
exit(EXIT_FAILURE);
if (!c->may_control(c)) {
fprintf(stderr, "Insufficent privileges to control %s\n", c->name);
lxc_container_put(c);
exit(EXIT_FAILURE);
}
if (my_args.rcfile) {
c->clear_config(c);
if (!c->load_config(c, my_args.rcfile)) {
fprintf(stderr, "Failed to load rcfile\n");
lxc_container_put(c);
exit(EXIT_FAILURE);
}
c->configfile = strdup(my_args.rcfile);
if (!c->configfile) {
fprintf(stderr, "Out of memory setting new config filename\n");
lxc_container_put(c);
exit(EXIT_FAILURE);
}
}
if (!c->wait(c, my_args.states, my_args.timeout)) {
lxc_container_put(c);
exit(EXIT_FAILURE);
}
exit(EXIT_SUCCESS);
}