diff options
| -rw-r--r-- | src/basic/clock-util.c | 14 | ||||
| -rw-r--r-- | src/basic/clock-util.h | 1 | ||||
| -rw-r--r-- | src/core/main.c | 8 |
3 files changed, 22 insertions, 1 deletions
diff --git a/src/basic/clock-util.c b/src/basic/clock-util.c index 05788a360e..c64b2e5e8c 100644 --- a/src/basic/clock-util.c +++ b/src/basic/clock-util.c @@ -146,3 +146,17 @@ int clock_reset_timewarp(void) { return 0; } + +#define TIME_EPOCH_USEC ((usec_t) TIME_EPOCH * USEC_PER_SEC) + +int clock_apply_epoch(void) { + struct timespec ts; + + if (now(CLOCK_REALTIME) >= TIME_EPOCH_USEC) + return 0; + + if (clock_settime(CLOCK_REALTIME, timespec_store(&ts, TIME_EPOCH_USEC)) < 0) + return -errno; + + return 1; +} diff --git a/src/basic/clock-util.h b/src/basic/clock-util.h index fef2d471a6..09d46758f4 100644 --- a/src/basic/clock-util.h +++ b/src/basic/clock-util.h @@ -28,3 +28,4 @@ int clock_set_timezone(int *min); int clock_reset_timewarp(void); int clock_get_hwclock(struct tm *tm); int clock_set_hwclock(const struct tm *tm); +int clock_apply_epoch(void); diff --git a/src/core/main.c b/src/core/main.c index 99ef723fcb..fb27e897e4 100644 --- a/src/core/main.c +++ b/src/core/main.c @@ -1424,8 +1424,14 @@ int main(int argc, char *argv[]) { * saving time change. All kernel local time concepts will be treated * as UTC that way. */ - clock_reset_timewarp(); + (void) clock_reset_timewarp(); } + + r = clock_apply_epoch(); + if (r < 0) + log_error_errno(r, "Current system time is before build time, but cannot correct: %m"); + else if (r > 0) + log_info("System time before build time, advancing clock."); } /* Set the default for later on, but don't actually |