systemd/0021-time-util-fall-back-to-CLOCK_MONOTONIC-if-CLOCK_BOOT.patch

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2016-03-17 13:26:01 +00:00
From c411521802d5e89eeb5cdf39cdd7b9538a3a3a08 Mon Sep 17 00:00:00 2001
From: Lubomir Rintel <lkundrak@v3.sk>
Date: Tue, 15 Mar 2016 12:43:33 +0100
Subject: [PATCH] time-util: fall back to CLOCK_MONOTONIC if CLOCK_BOOTTIME
unsupported
It was added in 2.6.39, and causes an assertion to fail when running in mock
hosted on 2.6.23-based RHEL-6:
Assertion 'clock_gettime(map_clock_id(clock_id), &ts) == 0' failed at systemd/src/basic/time-util.c:70, function now(). Aborting.
(cherry picked from commit 2abd5b5a49ae368b258ffc7257ab703bccda67dd)
---
src/basic/time-util.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/src/basic/time-util.c b/src/basic/time-util.c
index 510f018d9b..ec112e23e2 100644
--- a/src/basic/time-util.c
+++ b/src/basic/time-util.c
@@ -47,12 +47,15 @@ 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. */
+ * those archs.
+ *
+ * Also, older kernels don't support CLOCK_BOOTTIME: fall back to CLOCK_MONOTONIC. */
switch (c) {
+ case CLOCK_BOOTTIME:
case CLOCK_BOOTTIME_ALARM:
- return CLOCK_BOOTTIME;
+ return clock_boottime_or_monotonic ();
case CLOCK_REALTIME_ALARM:
return CLOCK_REALTIME;