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glibc  2.9
ftime.c
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00001 /* Copyright (C) 1994, 1996, 1997, 2001 Free Software Foundation, Inc.
00002    This file is part of the GNU C Library.
00003 
00004    The GNU C Library is free software; you can redistribute it and/or
00005    modify it under the terms of the GNU Lesser General Public
00006    License as published by the Free Software Foundation; either
00007    version 2.1 of the License, or (at your option) any later version.
00008 
00009    The GNU C Library is distributed in the hope that it will be useful,
00010    but WITHOUT ANY WARRANTY; without even the implied warranty of
00011    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012    Lesser General Public License for more details.
00013 
00014    You should have received a copy of the GNU Lesser General Public
00015    License along with the GNU C Library; if not, write to the Free
00016    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00017    02111-1307 USA.  */
00018 
00019 #include <errno.h>
00020 #include <time.h>
00021 #include <sys/timeb.h>
00022 
00023 int
00024 ftime (timebuf)
00025      struct timeb *timebuf;
00026 {
00027   int save = errno;
00028   struct tm tp;
00029 
00030   __set_errno (0);
00031   if (time (&timebuf->time) == (time_t) -1 && errno != 0)
00032     return -1;
00033   timebuf->millitm = 0;
00034 
00035   if (__localtime_r (&timebuf->time, &tp) == NULL)
00036     return -1;
00037 
00038   timebuf->timezone = tp.tm_gmtoff / 60;
00039   timebuf->dstflag = tp.tm_isdst;
00040 
00041   __set_errno (save);
00042   return 0;
00043 }