X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=util-linux%2Frtcwake.c;h=66b08e34393090497df3785614bcd77254af435e;hb=baad6d889da960ff3336f16a8e5d25518f832c73;hp=6df7334fec2f6f548e72d07d731d52c035247100;hpb=68404f13d4bf4826e3609703dad5375763db28ab;p=oweals%2Fbusybox.git

diff --git a/util-linux/rtcwake.c b/util-linux/rtcwake.c
index 6df7334fe..66b08e343 100644
--- a/util-linux/rtcwake.c
+++ b/util-linux/rtcwake.c
@@ -3,6 +3,8 @@
  *
  * This version was taken from util-linux and scrubbed down for busybox.
  *
+ * Licensed under GPLv2, see file LICENSE in this tarball for details.
+ *
  * This uses cross-platform Linux interfaces to enter a system sleep state,
  * and leave it no later than a specified time.  It uses any RTC framework
  * driver that supports standard driver model wakeup flags.
@@ -26,11 +28,9 @@
 
 #define SYS_RTC_PATH   "/sys/class/rtc/%s/device/power/wakeup"
 #define SYS_POWER_PATH "/sys/power/state"
-#define DEFAULT_MODE   "suspend"
-
-static time_t rtc_time;
+#define DEFAULT_MODE   "standby"
 
-static int may_wakeup(const char *rtcname)
+static NOINLINE bool may_wakeup(const char *rtcname)
 {
 	ssize_t ret;
 	char buf[128];
@@ -42,15 +42,15 @@ static int may_wakeup(const char *rtcname)
 	snprintf(buf, sizeof(buf), SYS_RTC_PATH, rtcname);
 	ret = open_read_close(buf, buf, sizeof(buf));
 	if (ret < 0)
-		return 0;
+		return false;
 
 	/* wakeup events could be disabled or not supported */
 	return strncmp(buf, "enabled\n", 8) == 0;
 }
 
-static void setup_alarm(int fd, time_t *wakeup)
+static NOINLINE void setup_alarm(int fd, time_t *wakeup, time_t rtc_time)
 {
-	struct tm *tm;
+	struct tm *ptm;
 	struct linux_rtc_wkalrm	wake;
 
 	/* The wakeup time is in POSIX time (more or less UTC).
@@ -63,14 +63,14 @@ static void setup_alarm(int fd, time_t *wakeup)
 	 * Else mode is local so the time given to the RTC
 	 * will instead use the local time zone.
 	 */
-	tm = localtime(wakeup);
-
-	wake.time.tm_sec = tm->tm_sec;
-	wake.time.tm_min = tm->tm_min;
-	wake.time.tm_hour = tm->tm_hour;
-	wake.time.tm_mday = tm->tm_mday;
-	wake.time.tm_mon = tm->tm_mon;
-	wake.time.tm_year = tm->tm_year;
+	ptm = localtime(wakeup);
+
+	wake.time.tm_sec = ptm->tm_sec;
+	wake.time.tm_min = ptm->tm_min;
+	wake.time.tm_hour = ptm->tm_hour;
+	wake.time.tm_mday = ptm->tm_mday;
+	wake.time.tm_mon = ptm->tm_mon;
+	wake.time.tm_year = ptm->tm_year;
 	/* wday, yday, and isdst fields are unused by Linux */
 	wake.time.tm_wday = -1;
 	wake.time.tm_yday = -1;
@@ -89,15 +89,6 @@ static void setup_alarm(int fd, time_t *wakeup)
 	}
 }
 
-static void suspend_system(const char *suspend)
-{
-	FILE *f = xfopen(SYS_POWER_PATH, "w");
-	fprintf(f, "%s\n", suspend);
-	fflush(f);
-	/* this executes after wake from suspend */
-	fclose(f);
-}
-
 #define RTCWAKE_OPT_AUTO         0x01
 #define RTCWAKE_OPT_LOCAL        0x02
 #define RTCWAKE_OPT_UTC          0x04
@@ -107,8 +98,10 @@ static void suspend_system(const char *suspend)
 #define RTCWAKE_OPT_TIME         0x40
 
 int rtcwake_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int rtcwake_main(int argc ATTRIBUTE_UNUSED, char **argv)
+int rtcwake_main(int argc UNUSED_PARAM, char **argv)
 {
+	time_t rtc_time;
+
 	unsigned opt;
 	const char *rtcname = NULL;
 	const char *suspend;
@@ -121,7 +114,7 @@ int rtcwake_main(int argc ATTRIBUTE_UNUSED, char **argv)
 	int utc = -1;
 	int fd;
 
-#if ENABLE_GETOPT_LONG
+#if ENABLE_LONG_OPTS
 	static const char rtcwake_longopts[] ALIGN1 =
 		"auto\0"    No_argument "a"
 		"local\0"   No_argument "l"
@@ -148,7 +141,7 @@ int rtcwake_main(int argc ATTRIBUTE_UNUSED, char **argv)
 		seconds = xatoi(opt_seconds);
 	if (opt & RTCWAKE_OPT_TIME)
 		/* alarm time, time_t (absolute, seconds since 1/1 1970 UTC) */
-		alarm_time = xatoi(opt_time);
+		alarm_time = xatol(opt_time);
 
 	if (!alarm_time && !seconds)
 		bb_error_msg_and_die("must provide wake time");
@@ -166,10 +159,13 @@ int rtcwake_main(int argc ATTRIBUTE_UNUSED, char **argv)
 		bb_error_msg_and_die("%s not enabled for wakeup events", rtcname);
 
 	/* relative or absolute alarm time, normalized to time_t */
-	sys_time = time(0);
-	if (sys_time == (time_t)-1)
-		bb_perror_msg_and_die("read system time");
-	rtc_time = rtc_read_time(fd, utc);
+	sys_time = time(NULL);
+	{
+		struct tm tm_time;
+		rtc_read_tm(&tm_time, fd);
+		rtc_time = rtc_tm2time(&tm_time, utc);
+	}
+
 
 	if (alarm_time) {
 		if (alarm_time < sys_time)
@@ -177,15 +173,15 @@ int rtcwake_main(int argc ATTRIBUTE_UNUSED, char **argv)
 		alarm_time += sys_time - rtc_time;
 	} else
 		alarm_time = rtc_time + seconds + 1;
-	setup_alarm(fd, &alarm_time);
+	setup_alarm(fd, &alarm_time, rtc_time);
 
 	sync();
 	printf("wakeup from \"%s\" at %s", suspend, ctime(&alarm_time));
-	fflush(stdout);
+	fflush_all();
 	usleep(10 * 1000);
 
 	if (strcmp(suspend, "on"))
-		suspend_system(suspend);
+		xopen_xwrite_close(SYS_POWER_PATH, suspend);
 	else {
 		/* "fake" suspend ... we'll do the delay ourselves */
 		unsigned long data;