sleep.c revision 6edd7d0a09171ea5ae8e01b7b1cbcb0bdfbfeb16
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright 2012 Lennart Poettering
systemd 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.
systemd 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 systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include "log.h"
#include "util.h"
int main(int argc, char *argv[]) {
const char *verb;
char* arguments[4];
int r;
FILE *f;
log_set_target(LOG_TARGET_AUTO);
log_parse_environment();
log_open();
if (argc != 2) {
log_error("Invalid number of arguments.");
r = -EINVAL;
goto finish;
}
if (streq(argv[1], "suspend"))
verb = "mem";
else if (streq(argv[1], "hibernate"))
verb = "disk";
else {
log_error("Unknown action '%s'.", argv[1]);
r = -EINVAL;
goto finish;
}
f = fopen("/sys/power/state", "we");
if (!f) {
log_error("Failed to open /sys/power/state: %m");
r = -errno;
goto finish;
}
arguments[0] = NULL;
arguments[1] = (char*) "pre";
arguments[2] = argv[1];
arguments[3] = NULL;
execute_directory(SYSTEMD_SLEEP_BINARY_PATH, NULL, arguments);
fputs(verb, f);
fputc('\n', f);
fflush(f);
r = ferror(f) ? -errno : 0;
arguments[1] = (char*) "post";
execute_directory(SYSTEMD_SLEEP_BINARY_PATH, NULL, arguments);
fclose(f);
finish:
return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
}