diff options
| author | Karel Zak | 2017-11-27 12:37:53 +0100 |
|---|---|---|
| committer | Karel Zak | 2017-11-27 12:37:53 +0100 |
| commit | e72027dadad83567dbc3c3e31e2f77005a3e0d78 (patch) | |
| tree | 717aedc4633fd9766488a769d536d13ea7e273f2 /sys-utils/rtcwake.c | |
| parent | libsmartcols: fix mem-leaks in samples (diff) | |
| download | kernel-qcow2-util-linux-e72027dadad83567dbc3c3e31e2f77005a3e0d78.tar.gz kernel-qcow2-util-linux-e72027dadad83567dbc3c3e31e2f77005a3e0d78.tar.xz kernel-qcow2-util-linux-e72027dadad83567dbc3c3e31e2f77005a3e0d78.zip | |
rtcwake: fix sys vs. rtc time delta usage
srett commented:
After some head scratching why relative wakeup using -s always works
while -t didn't seem to work at all I discovered that the adjustment
for time difference between sys and rtc is actually inverted when
writing the alarm (code for -m show reading is fine), so if the RTC
lags 10 minutes behind, the alarm will be shifted into the future by
10 minutes, resulting in a wakeup that is 20 minutes late.
Addresses: https://github.com/karelzak/util-linux/issues/544
Signed-off-by: Karel Zak <kzak@redhat.com>
Diffstat (limited to 'sys-utils/rtcwake.c')
| -rw-r--r-- | sys-utils/rtcwake.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sys-utils/rtcwake.c b/sys-utils/rtcwake.c index 5fe686f5b..20e40a07f 100644 --- a/sys-utils/rtcwake.c +++ b/sys-utils/rtcwake.c @@ -532,7 +532,7 @@ int main(int argc, char **argv) if (alarm < ctl.sys_time) errx(EXIT_FAILURE, _("time doesn't go backward to %s"), ctime(&alarm)); - alarm += ctl.sys_time - ctl.rtc_time; + alarm -= ctl.sys_time - ctl.rtc_time; } else alarm = ctl.rtc_time + seconds + 1; |