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
#include <stdio.h>
#include <errno.h>
#include <string.h>
+#include <getopt.h>
+#include "sd-id128.h"
+#include "sd-messages.h"
#include "log.h"
#include "util.h"
-#include "systemd/sd-id128.h"
-#include "systemd/sd-messages.h"
+#include "strv.h"
+#include "fileio.h"
+#include "build.h"
+#include "sleep-config.h"
+#include "def.h"
-int main(int argc, char *argv[]) {
- const char *verb;
- char* arguments[4];
- int r;
- FILE *f;
+static char* arg_verb = NULL;
- log_set_target(LOG_TARGET_AUTO);
- log_parse_environment();
- log_open();
+static int write_mode(char **modes) {
+ int r = 0;
+ char **mode;
- if (argc != 2) {
- log_error("Invalid number of arguments.");
- r = -EINVAL;
- goto finish;
+ 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 (streq(argv[1], "suspend"))
- verb = "mem";
- else if (streq(argv[1], "hibernate") || streq(argv[1], "hybrid-sleep"))
- verb = "disk";
- else {
- log_error("Unknown action '%s'.", argv[1]);
- r = -EINVAL;
- goto finish;
+ 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
+ };
+
+ 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 */
- if (streq(argv[1], "hibernate")) {
- if (write_one_line_file("/sys/power/disk", "platform") < 0)
- write_one_line_file("/sys/power/disk", "shutdown");
- } else if (streq(argv[1], "hybrid-sleep")) {
- if (write_one_line_file("/sys/power/disk", "suspend") < 0)
- if (write_one_line_file("/sys/power/disk", "platform") < 0)
- write_one_line_file("/sys/power/disk", "shutdown");
+ r = write_mode(modes);
+ if (r < 0)
+ return r;
+
+ execute_directory(SYSTEM_SLEEP_PATH, 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_directory(SYSTEM_SLEEP_PATH, 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;
}
- f = fopen("/sys/power/state", "we");
- if (!f) {
- log_error("Failed to open /sys/power/state: %m");
- r = -errno;
- goto finish;
+ 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;
}
- arguments[0] = NULL;
- arguments[1] = (char*) "pre";
- arguments[2] = argv[1];
- arguments[3] = NULL;
- execute_directory(SYSTEM_SLEEP_PATH, NULL, arguments);
-
- if (streq(argv[1], "suspend"))
- log_struct(LOG_INFO,
- MESSAGE_ID(SD_MESSAGE_SLEEP_START),
- "MESSAGE=Suspending system...",
- "SLEEP=suspend",
- NULL);
- else if (streq(argv[1], "hibernate"))
- log_struct(LOG_INFO,
- MESSAGE_ID(SD_MESSAGE_SLEEP_START),
- "MESSAGE=Hibernating system...",
- "SLEEP=hibernate",
- NULL);
- else
- log_struct(LOG_INFO,
- MESSAGE_ID(SD_MESSAGE_SLEEP_START),
- "MESSAGE=Hibernating and suspending system...",
- "SLEEP=hybrid-sleep",
- NULL);
-
- fputs(verb, f);
- fputc('\n', f);
- fflush(f);
-
- r = ferror(f) ? -errno : 0;
-
- if (streq(argv[1], "suspend"))
- log_struct(LOG_INFO,
- MESSAGE_ID(SD_MESSAGE_SLEEP_STOP),
- "MESSAGE=System resumed.",
- "SLEEP=suspend",
- NULL);
- else
- log_struct(LOG_INFO,
- MESSAGE_ID(SD_MESSAGE_SLEEP_STOP),
- "MESSAGE=System thawed.",
- "SLEEP=hibernate",
- NULL);
+ return 1 /* work to do */;
+}
- arguments[1] = (char*) "post";
- execute_directory(SYSTEM_SLEEP_PATH, NULL, arguments);
+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();
- fclose(f);
+ r = parse_argv(argc, argv);
+ if (r <= 0)
+ goto finish;
-finish:
+ r = parse_sleep_config(arg_verb, &modes, &states);
+ if (r < 0)
+ goto finish;
- return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
+ r = execute(modes, states);
+finish:
+ return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
}
~ianmdlvl / elogind.git / blobdiff