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log: do not clobber errno

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Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
This commit is contained in:
Christian Brauner
2018-09-03 12:17:46 +02:00
parent 2a850b2ca6
commit b7051eb7e6
1 changed files with 3 additions and 0 deletions
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3
src/lxc/log.h
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@@ -276,6 +276,7 @@ ATTR_UNUSED static inline void LXC_##LEVEL(struct lxc_log_locinfo* locinfo, \
{ \
if (lxc_log_priority_is_enabled(acategory, LXC_LOG_LEVEL_##LEVEL)) { \
va_list va_ref; \
int saved_errno; \
struct lxc_log_event evt = { \
.category = (acategory)->name, \
.priority = LXC_LOG_LEVEL_##LEVEL, \
@@ -287,12 +288,14 @@ ATTR_UNUSED static inline void LXC_##LEVEL(struct lxc_log_locinfo* locinfo, \
* without restrictions. So let's use it for our \
* logging stamps. \
*/ \
saved_errno = errno; \
(void)clock_gettime(CLOCK_REALTIME, &evt.timestamp); \
\
va_start(va_ref, format); \
evt.vap = &va_ref; \
__lxc_log(acategory, &evt); \
va_end(va_ref); \
errno = saved_errno; \
} \
}