From 32c1f5a57998f2a9e1992af006b83e39e3155830 Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Fri, 12 Feb 2016 21:29:01 +0100 Subject: time-util: map ALARM clockids to non-ALARM clockids in now() Fixes: #2597 --- src/basic/time-util.c | 24 ++++++++++++++++++++++-- 1 file changed, 22 insertions(+), 2 deletions(-) (limited to 'src/basic') diff --git a/src/basic/time-util.c b/src/basic/time-util.c index 3973850b44..510f018d9b 100644 --- a/src/basic/time-util.c +++ b/src/basic/time-util.c @@ -42,10 +42,30 @@ static nsec_t timespec_load_nsec(const struct timespec *ts); +static clockid_t map_clock_id(clockid_t c) { + + /* Some more exotic archs (s390, ppc, …) lack the "ALARM" flavour of the clocks. Thus, clock_gettime() will + * fail for them. Since they are essentially the same as their non-ALARM pendants (their only difference is + * when timers are set on them), let's just map them accordingly. This way, we can get the correct time even on + * those archs. */ + + switch (c) { + + case CLOCK_BOOTTIME_ALARM: + return CLOCK_BOOTTIME; + + case CLOCK_REALTIME_ALARM: + return CLOCK_REALTIME; + + default: + return c; + } +} + usec_t now(clockid_t clock_id) { struct timespec ts; - assert_se(clock_gettime(clock_id, &ts) == 0); + assert_se(clock_gettime(map_clock_id(clock_id), &ts) == 0); return timespec_load(&ts); } @@ -53,7 +73,7 @@ usec_t now(clockid_t clock_id) { nsec_t now_nsec(clockid_t clock_id) { struct timespec ts; - assert_se(clock_gettime(clock_id, &ts) == 0); + assert_se(clock_gettime(map_clock_id(clock_id), &ts) == 0); return timespec_load_nsec(&ts); } -- cgit v1.2.3-54-g00ecf