sleep: implement suspend/hibernate as first class targets

2 files changed, 84 insertions, 0 deletions

diff --git a/src/sleep/Makefile b/src/sleep/Makefile
new file mode 120000
index 0000000000..d0b0e8e008
--- /dev/null
+++ b/src/sleep/Makefile
@@ -0,0 +1 @@
+../Makefile
\ No newline at end of file
diff --git a/src/sleep/sleep.c b/src/sleep/sleep.c
new file mode 100644
index 0000000000..7062dc242f
--- /dev/null
+++ b/src/sleep/sleep.c
@@ -0,0 +1,83 @@
+/*-*- 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;
+
+}