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diff --git a/util-linux/rtcwake.c b/util-linux/rtcwake.c
index 29c440b..1bdf906 100644
--- a/util-linux/rtcwake.c
+++ b/util-linux/rtcwake.c
@@ -132,7 +132,7 @@ int rtcwake_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int rtcwake_main(int argc UNUSED_PARAM, char **argv)
{
unsigned opt;
- const char *rtcname = NULL;
+ const char *rtcname = "/dev/rtc0";
const char *suspend = "standby";
const char *opt_seconds;
const char *opt_time;
@@ -144,6 +144,9 @@ int rtcwake_main(int argc UNUSED_PARAM, char **argv)
int utc = -1;
int fd;
+ bool is_disable = false;
+ bool is_general_alarm = false;
+
#if ENABLE_LONG_OPTS
static const char rtcwake_longopts[] ALIGN1 =
"auto\0" No_argument "a"
@@ -157,7 +160,7 @@ int rtcwake_main(int argc UNUSED_PARAM, char **argv)
#endif
opt = getopt32long(argv,
/* Must have -s or -t, exclusive */
- "^alud:m:s:t:" "\0" "s:t:s--t:t--s", rtcwake_longopts,
+ "^alud:m:s:t:" "\0" "s--t:t--s", rtcwake_longopts,
&rtcname, &suspend, &opt_seconds, &opt_time);
/* this is the default
@@ -169,13 +172,16 @@ int rtcwake_main(int argc UNUSED_PARAM, char **argv)
if (opt & RTCWAKE_OPT_SECONDS) {
/* alarm time, seconds-to-sleep (relative) */
seconds = xatou(opt_seconds);
- } else {
- /* RTCWAKE_OPT_TIME */
+ } else if (opt & RTCWAKE_OPT_TIME) {
/* alarm time, time_t (absolute, seconds since 1/1 1970 UTC) */
if (sizeof(alarm_time) <= sizeof(long))
alarm_time = xatol(opt_time);
else
alarm_time = xatoll(opt_time);
+ } else if (strcmp(suspend, "disable") == 0) {
+ is_disable = true;
+ } else {
+ bb_show_usage();
}
if (utc == -1)
@@ -187,43 +193,51 @@ int rtcwake_main(int argc UNUSED_PARAM, char **argv)
/* this RTC must exist and (if we'll sleep) be wakeup-enabled */
fd = rtc_xopen(&rtcname, O_RDONLY);
- if (strcmp(suspend, "on") != 0)
- if (!may_wakeup(rtcname))
- bb_error_msg_and_die("%s not enabled for wakeup events", rtcname);
+ if (!is_disable) {
- /* relative or absolute alarm time, normalized to time_t */
- sys_time = time(NULL);
- {
- struct tm tm_time;
- rtc_read_tm(&tm_time, fd);
- rtc_time = rtc_tm2time(&tm_time, utc);
- }
+ if (strcmp(suspend, "on") != 0)
+ if (!may_wakeup(rtcname))
+ bb_error_msg_and_die("%s not enabled for wakeup events", rtcname);
- if (opt & RTCWAKE_OPT_TIME) {
- /* Correct for RTC<->system clock difference */
- alarm_time += rtc_time - sys_time;
- if (alarm_time < rtc_time)
- /*
- * Compat message text.
- * I'd say "RTC time is already ahead of ..." instead.
- */
- bb_error_msg_and_die("time doesn't go backward to %s", ctime(&alarm_time));
- } else
- alarm_time = rtc_time + seconds + 1;
-
- setup_alarm(fd, &alarm_time, rtc_time);
- sync();
+ /* relative or absolute alarm time, normalized to time_t */
+ sys_time = time(NULL);
+ {
+ struct tm tm_time;
+ rtc_read_tm(&tm_time, fd);
+ rtc_time = rtc_tm2time(&tm_time, utc);
+ }
+
+ if (opt & RTCWAKE_OPT_TIME) {
+ /* Correct for RTC<->system clock difference */
+ alarm_time += rtc_time - sys_time;
+ if (alarm_time < rtc_time)
+ /*
+ * Compat message text.
+ * I'd say "RTC time is already ahead of ..." instead.
+ */
+ bb_error_msg_and_die("time doesn't go backward to %s", ctime(&alarm_time));
+ } else
+ alarm_time = rtc_time + seconds + 1;
+
+ is_general_alarm = (rtc_time + (24 * 60 * 60)) > alarm_time;
+
+ setup_alarm(fd, &alarm_time, rtc_time);
+ sync();
#if 0 /*debug*/
- printf("sys_time: %s", ctime(&sys_time));
- printf("rtc_time: %s", ctime(&rtc_time));
+ printf("sys_time: %s", ctime(&sys_time));
+ printf("rtc_time: %s", ctime(&rtc_time));
#endif
- printf("wakeup from \"%s\" at %s", suspend, ctime(&alarm_time));
- fflush_all();
- usleep(10 * 1000);
+ printf("wakeup from \"%s\" at %s", suspend, ctime(&alarm_time));
+ fflush_all();
+ usleep(10 * 1000);
+ }
- if (strcmp(suspend, "on") != 0)
- xopen_xwrite_close(SYS_POWER_PATH, suspend);
- else {
+ if (is_disable) {
+ printf("disabling current alarm\n");
+ } else if (strcmp(suspend, "no") == 0) {
+ printf("just setting alarm, no powersaving mode requested\n");
+ goto at_exit;
+ } else if (strcmp(suspend, "on") == 0) {
/* "fake" suspend ... we'll do the delay ourselves */
unsigned long data;
@@ -234,10 +248,27 @@ int rtcwake_main(int argc UNUSED_PARAM, char **argv)
break;
}
} while (!(data & RTC_AF));
+ } else {
+ xopen_xwrite_close(SYS_POWER_PATH, suspend);
}
- xioctl(fd, RTC_AIE_OFF, 0);
+ if (!is_general_alarm || is_disable) {
+ struct linux_rtc_wkalrm wake;
+ if (ioctl(fd, RTC_WKALM_RD, &wake) < 0) {
+ printf("read rtc alarm failed\n");
+ } else {
+ wake.enabled = 0;
+ if (ioctl(fd, RTC_WKALM_SET, &wake) < 0) {
+ printf("disable rtc alarm interrupt failed\n");
+ }
+ }
+
+ }
+ if (is_general_alarm || is_disable) {
+ xioctl(fd, RTC_AIE_OFF, 0);
+ }
+at_exit:;
if (ENABLE_FEATURE_CLEAN_UP)
close(fd);
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