X-Git-Url: http://git.sven.stormbind.net/?p=sven%2Fexfat-utils.git;a=blobdiff_plain;f=libexfat%2Ftime.c;h=93c1d67c9550d04bfd900e065c117ab5cb724401;hp=2e22a99bf9de73878f4a35df43db17fb43696b6b;hb=refs%2Ftags%2Fupstream%2F1.2.5;hpb=9799d681703e3a63dbbf876c16c9bb51b20c8fab

diff --git a/libexfat/time.c b/libexfat/time.c
index 2e22a99..93c1d67 100644
--- a/libexfat/time.c
+++ b/libexfat/time.c
@@ -2,11 +2,12 @@
 	time.c (03.02.12)
 	exFAT file system implementation library.
 
-	Copyright (C) 2009, 2010  Andrew Nayenko
+	Free exFAT implementation.
+	Copyright (C) 2010-2016  Andrew Nayenko
 
-	This program is free software: you can redistribute it and/or modify
+	This program is free software; you can redistribute it and/or modify
 	it under the terms of the GNU General Public License as published by
-	the Free Software Foundation, either version 3 of the License, or
+	the Free Software Foundation, either version 2 of the License, or
 	(at your option) any later version.
 
 	This program is distributed in the hope that it will be useful,
@@ -14,8 +15,9 @@
 	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 	GNU General Public License for more details.
 
-	You should have received a copy of the GNU General Public License
-	along with this program.  If not, see <http://www.gnu.org/licenses/>.
+	You should have received a copy of the GNU General Public License along
+	with this program; if not, write to the Free Software Foundation, Inc.,
+	51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
 #include "exfat.h"
@@ -149,8 +151,14 @@ void exfat_unix2exfat(time_t unix_time, le16_t* date, le16_t* time,
 void exfat_tzset(void)
 {
 	time_t now;
+	struct tm* utc;
 
 	tzset();
 	now = time(NULL);
-	exfat_timezone = mktime(gmtime(&now)) - now;
+	utc = gmtime(&now);
+	/* gmtime() always sets tm_isdst to 0 because daylight savings never
+	   affect UTC. Setting tm_isdst to -1 makes mktime() to determine whether
+	   summer time is in effect. */
+	utc->tm_isdst = -1;
+	exfat_timezone = mktime(utc) - now;
 }