1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2012 Lennart Poettering
7 Copyright 2013 Zbigniew Jędrzejewski-Szmek
9 systemd is free software; you can redistribute it and/or modify it
10 under the terms of the GNU Lesser General Public License as published by
11 the Free Software Foundation; either version 2.1 of the License, or
12 (at your option) any later version.
14 systemd is distributed in the hope that it will be useful, but
15 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.
19 You should have received a copy of the GNU Lesser General Public License
20 along with systemd; If not, see <http://www.gnu.org/licenses/>.
29 #include "sd-messages.h"
35 #include "sleep-config.h"
38 static char* arg_verb = NULL;
40 static int write_mode(char **modes) {
44 STRV_FOREACH(mode, modes) {
47 k = write_string_file("/sys/power/disk", *mode);
51 log_debug_errno(k, "Failed to write '%s' to /sys/power/disk: %m",
58 log_error_errno(r, "Failed to write mode to /sys/power/disk: %m");
63 static int write_state(FILE **f, char **states) {
67 STRV_FOREACH(state, states) {
70 k = write_string_stream(*f, *state);
73 log_debug_errno(k, "Failed to write '%s' to /sys/power/state: %m",
79 *f = fopen("/sys/power/state", "we");
81 log_error_errno(errno, "Failed to open /sys/power/state: %m");
89 static int execute(char **modes, char **states) {
99 _cleanup_fclose_ FILE *f = NULL;
101 /* This file is opened first, so that if we hit an error,
102 * we can abort before modifying any state. */
103 f = fopen("/sys/power/state", "we");
105 log_error_errno(errno, "Failed to open /sys/power/state: %m");
109 /* Configure the hibernation mode */
110 r = write_mode(modes);
114 execute_directory(SYSTEM_SLEEP_PATH, NULL, DEFAULT_TIMEOUT_USEC, arguments);
117 LOG_MESSAGE_ID(SD_MESSAGE_SLEEP_START),
118 LOG_MESSAGE("Suspending system..."),
119 "SLEEP=%s", arg_verb,
122 r = write_state(&f, states);
127 LOG_MESSAGE_ID(SD_MESSAGE_SLEEP_STOP),
128 LOG_MESSAGE("MESSAGE=System resumed."),
129 "SLEEP=%s", arg_verb,
132 arguments[1] = (char*) "post";
133 execute_directory(SYSTEM_SLEEP_PATH, NULL, DEFAULT_TIMEOUT_USEC, arguments);
138 static void help(void) {
139 printf("%s COMMAND\n\n"
140 "Suspend the system, hibernate the system, or both.\n\n"
142 " -h --help Show this help and exit\n"
143 " --version Print version string and exit\n"
144 " suspend Suspend the system\n"
145 " hibernate Hibernate the system\n"
146 " hybrid-sleep Both hibernate and suspend the system\n"
147 , program_invocation_short_name);
150 static int parse_argv(int argc, char *argv[]) {
155 static const struct option options[] = {
156 { "help", no_argument, NULL, 'h' },
157 { "version", no_argument, NULL, ARG_VERSION },
166 while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)
173 puts(PACKAGE_STRING);
174 puts(SYSTEMD_FEATURES);
181 assert_not_reached("Unhandled option");
184 if (argc - optind != 1) {
185 log_error("Usage: %s COMMAND",
186 program_invocation_short_name);
190 arg_verb = argv[optind];
192 if (!streq(arg_verb, "suspend") &&
193 !streq(arg_verb, "hibernate") &&
194 !streq(arg_verb, "hybrid-sleep")) {
195 log_error("Unknown command '%s'.", arg_verb);
199 return 1 /* work to do */;
202 int main(int argc, char *argv[]) {
203 _cleanup_strv_free_ char **modes = NULL, **states = NULL;
206 log_set_target(LOG_TARGET_AUTO);
207 log_parse_environment();
210 r = parse_argv(argc, argv);
214 r = parse_sleep_config(arg_verb, &modes, &states);
218 r = execute(modes, states);
221 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;