+++ /dev/null
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- This file is part of systemd.
-
- Copyright 2012 Lennart Poettering
- Copyright 2013 Zbigniew Jędrzejewski-Szmek
-
- 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 <getopt.h>
-
-#include "sd-messages.h"
-#include "log.h"
-#include "util.h"
-#include "strv.h"
-#include "fileio.h"
-#include "build.h"
-#include "sleep-config.h"
-#include "def.h"
-
-static char* arg_verb = NULL;
-
-static int write_mode(char **modes) {
- int r = 0;
- char **mode;
-
- STRV_FOREACH(mode, modes) {
- int k;
-
- k = write_string_file("/sys/power/disk", *mode);
- if (k == 0)
- return 0;
-
- log_debug_errno(k, "Failed to write '%s' to /sys/power/disk: %m",
- *mode);
- if (r == 0)
- r = k;
- }
-
- if (r < 0)
- log_error_errno(r, "Failed to write mode to /sys/power/disk: %m");
-
- return r;
-}
-
-static int write_state(FILE **f, char **states) {
- char **state;
- int r = 0;
-
- STRV_FOREACH(state, states) {
- int k;
-
- k = write_string_stream(*f, *state);
- if (k == 0)
- return 0;
- log_debug_errno(k, "Failed to write '%s' to /sys/power/state: %m",
- *state);
- if (r == 0)
- r = k;
-
- fclose(*f);
- *f = fopen("/sys/power/state", "we");
- if (!*f)
- return log_error_errno(errno, "Failed to open /sys/power/state: %m");
- }
-
- return r;
-}
-
-static int execute(char **modes, char **states) {
-
- char *arguments[] = {
- NULL,
- (char*) "pre",
- arg_verb,
- NULL
- };
- static const char* const dirs[] = {SYSTEM_SLEEP_PATH, NULL};
-
- int r;
- _cleanup_fclose_ FILE *f = NULL;
-
- /* This file is opened first, so that if we hit an error,
- * we can abort before modifying any state. */
- f = fopen("/sys/power/state", "we");
- if (!f)
- return log_error_errno(errno, "Failed to open /sys/power/state: %m");
-
- /* Configure the hibernation mode */
- r = write_mode(modes);
- if (r < 0)
- return r;
-
- execute_directories(dirs, DEFAULT_TIMEOUT_USEC, arguments);
-
- log_struct(LOG_INFO,
- LOG_MESSAGE_ID(SD_MESSAGE_SLEEP_START),
- LOG_MESSAGE("Suspending system..."),
- "SLEEP=%s", arg_verb,
- NULL);
-
- r = write_state(&f, states);
- if (r < 0)
- return r;
-
- log_struct(LOG_INFO,
- LOG_MESSAGE_ID(SD_MESSAGE_SLEEP_STOP),
- LOG_MESSAGE("System resumed."),
- "SLEEP=%s", arg_verb,
- NULL);
-
- arguments[1] = (char*) "post";
- execute_directories(dirs, DEFAULT_TIMEOUT_USEC, arguments);
-
- return r;
-}
-
-static void help(void) {
- printf("%s COMMAND\n\n"
- "Suspend the system, hibernate the system, or both.\n\n"
- "Commands:\n"
- " -h --help Show this help and exit\n"
- " --version Print version string and exit\n"
- " suspend Suspend the system\n"
- " hibernate Hibernate the system\n"
- " hybrid-sleep Both hibernate and suspend the system\n"
- , program_invocation_short_name);
-}
-
-static int parse_argv(int argc, char *argv[]) {
- enum {
- ARG_VERSION = 0x100,
- };
-
- static const struct option options[] = {
- { "help", no_argument, NULL, 'h' },
- { "version", no_argument, NULL, ARG_VERSION },
- {}
- };
-
- int c;
-
- assert(argc >= 0);
- assert(argv);
-
- while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)
- switch(c) {
- case 'h':
- help();
- return 0; /* done */
-
- case ARG_VERSION:
- puts(PACKAGE_STRING);
- puts(SYSTEMD_FEATURES);
- return 0 /* done */;
-
- case '?':
- return -EINVAL;
-
- default:
- assert_not_reached("Unhandled option");
- }
-
- if (argc - optind != 1) {
- log_error("Usage: %s COMMAND",
- program_invocation_short_name);
- return -EINVAL;
- }
-
- arg_verb = argv[optind];
-
- if (!streq(arg_verb, "suspend") &&
- !streq(arg_verb, "hibernate") &&
- !streq(arg_verb, "hybrid-sleep")) {
- log_error("Unknown command '%s'.", arg_verb);
- return -EINVAL;
- }
-
- return 1 /* work to do */;
-}
-
-int main(int argc, char *argv[]) {
- _cleanup_strv_free_ char **modes = NULL, **states = NULL;
- int r;
-
- log_set_target(LOG_TARGET_AUTO);
- log_parse_environment();
- log_open();
-
- r = parse_argv(argc, argv);
- if (r <= 0)
- goto finish;
-
- r = parse_sleep_config(arg_verb, &modes, &states);
- if (r < 0)
- goto finish;
-
- r = execute(modes, states);
-
-finish:
- return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
-}
~ianmdlvl / elogind.git / blobdiff