Converting a time structure from text format that has timezone markup is practically impossible. See reference links for more information. This leads to situation where multiple utmpdump(1) conversions from binary to text and back make timestamps to shift amount of timezone offset to UTC-0. The easiest way to make multiple conversions to work without timeshifts is to always use UTC-0 timezone. Downside of this approach is that the textual format is less human readable than local timestamps would be. Reference: http://www.catb.org/esr/time-programming/#_strptime_3_and_getdate_3 Reference: http://man7.org/linux/man-pages/man3/strptime.3.html Signed-off-by: Sami Kerola <kerolasa@xxxxxx> --- login-utils/utmpdump.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/login-utils/utmpdump.c b/login-utils/utmpdump.c index 03cf4a9..6eaf202 100644 --- a/login-utils/utmpdump.c +++ b/login-utils/utmpdump.c @@ -47,10 +47,10 @@ static char *timetostr(const time_t time) { - static char s[29]; /* [Sun Sep 01 00:00:00 1998 PST] */ + static char s[29]; /* [Tue Sep 01 00:00:00 1998 GMT] */ struct tm *tmp; - if (time != 0 && (tmp = localtime(&time))) + if (time != 0 && (tmp = gmtime(&time))) strftime(s, 29, "%a %b %d %T %Y %Z", tmp); else s[0] = '\0'; @@ -73,7 +73,7 @@ static time_t strtotime(const char *s_time) if (s_time[26] == 'D') tm.tm_isdst = 1; - return mktime(&tm); + return timegm(&tm); } #define cleanse(x) xcleanse(x, sizeof(x)) -- 2.9.0 -- To unsubscribe from this list: send the line "unsubscribe util-linux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
