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authorMario Limonciello <mario.limonciello@dell.com>2018-03-28 11:00:06 -0500
committerSven Eden <yamakuzure@gmx.net>2018-08-24 16:47:08 +0200
commitf536abd4560d2f871698bb4d27566c66cfe110ef (patch)
tree155a2878da38e7ba8eb3f224e65c0c1dc72bad48 /src/sleep
parentcfe944b83031d44578b6924dfba2b2655d115068 (diff)
Rename suspend-to-hibernate to suspend-then-hibernate
Per some discussion with Gnome folks, they would prefer this name as it's more descriptive of what's happening.
Diffstat (limited to 'src/sleep')
-rw-r--r--src/sleep/sleep.c94
1 files changed, 90 insertions, 4 deletions
diff --git a/src/sleep/sleep.c b/src/sleep/sleep.c
index f0873c989..66c9d04fb 100644
--- a/src/sleep/sleep.c
+++ b/src/sleep/sleep.c
@@ -4,6 +4,7 @@
Copyright 2012 Lennart Poettering
Copyright 2013 Zbigniew Jędrzejewski-Szmek
+ Copyright 2018 Dell Inc.
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
@@ -25,12 +26,14 @@
#include "sd-messages.h"
+//#include "parse-util.h"
#include "def.h"
#include "exec-util.h"
#include "fd-util.h"
#include "fileio.h"
//#include "log.h"
//#include "sleep-config.h"
+//#include "stdio-util.h"
//#include "string-util.h"
#include "strv.h"
//#include "util.h"
@@ -138,6 +141,83 @@ static int execute(char **modes, char **states) {
return r;
}
+static int read_wakealarm(uint64_t *result) {
+ _cleanup_free_ char *t = NULL;
+
+ if (read_one_line_file("/sys/class/rtc/rtc0/since_epoch", &t) >= 0)
+ return safe_atou64(t, result);
+ return -EBADF;
+}
+
+static int write_wakealarm(const char *str) {
+
+ _cleanup_fclose_ FILE *f = NULL;
+ int r;
+
+ f = fopen("/sys/class/rtc/rtc0/wakealarm", "we");
+ if (!f)
+ return log_error_errno(errno, "Failed to open /sys/class/rtc/rtc0/wakealarm: %m");
+
+ r = write_string_stream(f, str, 0);
+ if (r < 0)
+ return log_error_errno(r, "Failed to write '%s' to /sys/class/rtc/rtc0/wakealarm: %m", str);
+
+ return 0;
+}
+
+static int execute_s2h(usec_t hibernate_delay_sec) {
+
+ _cleanup_strv_free_ char **hibernate_modes = NULL, **hibernate_states = NULL,
+ **suspend_modes = NULL, **suspend_states = NULL;
+ usec_t orig_time, cmp_time;
+ char time_str[DECIMAL_STR_MAX(uint64_t)];
+ int r;
+
+ r = parse_sleep_config("suspend", &suspend_modes, &suspend_states,
+ NULL);
+ if (r < 0)
+ return r;
+
+ r = parse_sleep_config("hibernate", &hibernate_modes,
+ &hibernate_states, NULL);
+ if (r < 0)
+ return r;
+
+ r = read_wakealarm(&orig_time);
+ if (r < 0)
+ return log_error_errno(errno, "Failed to read time: %d", r);
+
+ orig_time += hibernate_delay_sec / USEC_PER_SEC;
+ xsprintf(time_str, "%" PRIu64, orig_time);
+
+ r = write_wakealarm(time_str);
+ if (r < 0)
+ return r;
+
+ log_debug("Set RTC wake alarm for %s", time_str);
+
+ r = execute(suspend_modes, suspend_states);
+ if (r < 0)
+ return r;
+
+ r = read_wakealarm(&cmp_time);
+ if (r < 0)
+ return log_error_errno(errno, "Failed to read time: %d", r);
+
+ /* reset RTC */
+ r = write_wakealarm("0");
+ if (r < 0)
+ return r;
+
+ log_debug("Woke up at %"PRIu64, cmp_time);
+
+ /* if woken up after alarm time, hibernate */
+ if (cmp_time >= orig_time)
+ r = execute(hibernate_modes, hibernate_states);
+
+ return r;
+}
+
#if 0 /// elogind calls execute() by itself and does not need another binary
static void help(void) {
printf("%s COMMAND\n\n"
@@ -148,6 +228,8 @@ static void help(void) {
" suspend Suspend the system\n"
" hibernate Hibernate the system\n"
" hybrid-sleep Both hibernate and suspend the system\n"
+ " suspend-then-hibernate Initially suspend and then hibernate\n"
+ " the system after a fixed period of time\n"
, program_invocation_short_name);
}
@@ -193,7 +275,8 @@ static int parse_argv(int argc, char *argv[]) {
if (!streq(arg_verb, "suspend") &&
!streq(arg_verb, "hibernate") &&
- !streq(arg_verb, "hybrid-sleep")) {
+ !streq(arg_verb, "hybrid-sleep") &&
+ !streq(arg_verb, "suspend-then-hibernate")) {
log_error("Unknown command '%s'.", arg_verb);
return -EINVAL;
}
@@ -203,6 +286,7 @@ static int parse_argv(int argc, char *argv[]) {
int main(int argc, char *argv[]) {
_cleanup_strv_free_ char **modes = NULL, **states = NULL;
+ usec_t delay = 0;
int r;
log_set_target(LOG_TARGET_AUTO);
@@ -213,12 +297,14 @@ int main(int argc, char *argv[]) {
if (r <= 0)
goto finish;
- r = parse_sleep_config(arg_verb, &modes, &states);
+ r = parse_sleep_config(arg_verb, &modes, &states, &delay);
if (r < 0)
goto finish;
- r = execute(modes, states);
-
+ if (streq(arg_verb, "suspend-then-hibernate"))
+ r = execute_s2h(delay);
+ else
+ r = execute(modes, states);
finish:
return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
}