#define SYS_RTC_PATH "/sys/class/rtc/%s/device/power/wakeup"
#define SYS_POWER_PATH "/sys/power/state"
-#define DEFAULT_MODE "suspend"
+#define DEFAULT_MODE "standby"
static time_t rtc_time;
-static int may_wakeup(const char *rtcname)
+static bool may_wakeup(const char *rtcname)
{
ssize_t ret;
char buf[128];
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 strcmp(buf, "enabled\n") == 0;
+ return strncmp(buf, "enabled\n", 8) == 0;
}
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
#define RTCWAKE_OPT_TIME 0x40
int rtcwake_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int rtcwake_main(int argc, char **argv)
+int rtcwake_main(int argc UNUSED_PARAM, char **argv)
{
unsigned opt;
const char *rtcname = NULL;
/* the rtcname is relative to /dev */
xchdir("/dev");
- if (strcmp(suspend, "on") != 0 && !may_wakeup(rtcname))
- bb_error_msg_and_die("%s not enabled for wakeup events", rtcname);
-
/* this RTC must exist and (if we'll sleep) be wakeup-enabled */
- fd = rtc_xopen(rtcname, O_RDONLY);
+ fd = rtc_xopen(&rtcname, O_RDONLY);
+
+ if (strcmp(suspend, "on") && !may_wakeup(rtcname))
+ 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);
fflush(stdout);
usleep(10 * 1000);
- if (!strcmp(suspend, "on"))
- suspend_system(suspend);
+ if (strcmp(suspend, "on"))
+ xopen_xwrite_close(SYS_POWER_PATH, suspend);
else {
/* "fake" suspend ... we'll do the delay ourselves */
unsigned long data;