From c1616946825e7f4ae9769e2846e9ad63a7ba369c Mon Sep 17 00:00:00 2001 From: Sami Kerola Date: Sun, 19 Jun 2016 21:43:40 +0100 Subject: libcommon: add ISO_8601_GMTIME that will print UTC-0 timestamps When timestamps are intented to be conversable back from string to binary it is best to stick with UTC-0 timezone. This is needed in utmpdump(1). Signed-off-by: Sami Kerola --- lib/timeutils.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) (limited to 'lib/timeutils.c') diff --git a/lib/timeutils.c b/lib/timeutils.c index 25a163e41..fd9aa3e2e 100644 --- a/lib/timeutils.c +++ b/lib/timeutils.c @@ -396,7 +396,12 @@ static int format_iso_time(struct tm *tm, suseconds_t usec, int flags, char *buf /* timeval to ISO 8601 */ int strtimeval_iso(struct timeval *tv, int flags, char *buf, size_t bufsz) { - struct tm tm = *localtime(&tv->tv_sec); + struct tm tm; + + if (flags & ISO_8601_GMTIME) + tm = *gmtime(&tv->tv_sec); + else + tm = *localtime(&tv->tv_sec); return format_iso_time(&tm, tv->tv_usec, flags, buf, bufsz); } @@ -409,7 +414,12 @@ int strtm_iso(struct tm *tm, int flags, char *buf, size_t bufsz) /* time_t to ISO 8601 */ int strtime_iso(const time_t *t, int flags, char *buf, size_t bufsz) { - struct tm tm = *localtime(t); + struct tm tm; + + if (flags & ISO_8601_GMTIME) + tm = *gmtime(t); + else + tm = *localtime(t); return format_iso_time(&tm, 0, flags, buf, bufsz); } -- cgit v1.2.3-55-g7522