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dd: speed measurement. optional.
[oweals/busybox.git]
/
util-linux
/
rtcwake.c
diff --git
a/util-linux/rtcwake.c
b/util-linux/rtcwake.c
index 2b1ab1fcaab02457093007bde6b87c491c5c8a8c..4d2be00f5636e0042e8f5f2794e2e99ac346ff27 100644
(file)
--- 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.
*
*
* 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.
* 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 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];
{
ssize_t ret;
char buf[128];
@@
-42,13
+42,13
@@
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)
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;
}
/* 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 linux_rtc_wkalrm wake;
{
struct tm *tm;
struct linux_rtc_wkalrm wake;
@@
-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
#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;
#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)
{
{
+ time_t rtc_time;
+
unsigned opt;
const char *rtcname = NULL;
const char *suspend;
unsigned opt;
const char *rtcname = NULL;
const char *suspend;
@@
-121,7
+114,7
@@
int rtcwake_main(int argc, char **argv)
int utc = -1;
int fd;
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"
static const char rtcwake_longopts[] ALIGN1 =
"auto\0" No_argument "a"
"local\0" No_argument "l"
@@
-166,7
+159,7
@@
int rtcwake_main(int argc, char **argv)
bb_error_msg_and_die("%s not enabled for wakeup events", rtcname);
/* relative or absolute alarm time, normalized to time_t */
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
);
+ sys_time = time(
NULL
);
if (sys_time == (time_t)-1)
bb_perror_msg_and_die("read system time");
rtc_time = rtc_read_time(fd, utc);
if (sys_time == (time_t)-1)
bb_perror_msg_and_die("read system time");
rtc_time = rtc_read_time(fd, utc);
@@
-177,7
+170,7
@@
int rtcwake_main(int argc, char **argv)
alarm_time += sys_time - rtc_time;
} else
alarm_time = rtc_time + seconds + 1;
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));
sync();
printf("wakeup from \"%s\" at %s", suspend, ctime(&alarm_time));
@@
-185,7
+178,7
@@
int rtcwake_main(int argc, char **argv)
usleep(10 * 1000);
if (strcmp(suspend, "on"))
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;
else {
/* "fake" suspend ... we'll do the delay ourselves */
unsigned long data;