sysdeps/generic/ftime.c

   1 /* Copyright (C) 1994 Free Software Foundation, Inc.
   2 This file is part of the GNU C Library.
   3
   4 The GNU C Library is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU Library General Public License as
   6 published by the Free Software Foundation; either version 2 of the
   7 License, or (at your option) any later version.
   8
   9 The GNU C Library is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12 Library General Public License for more details.
  13
  14 You should have received a copy of the GNU Library General Public
  15 License along with the GNU C Library; see the file COPYING.LIB.  If
  16 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  17 Cambridge, MA 02139, USA.  */
  18
  19 #include <sys/timeb.h>
  20 #include <sys/time.h>
  21 #include <errno.h>
  22
  23 int
  24 ftime (timebuf)
  25      struct timeb *timebuf;
  26 {
  27   int save = errno;
  28   struct tm *tp;
  29
  30   errno = 0;
  31   if (time (&timebuf->time) == (time_t) -1 && errno != 0)
  32     return -1;
  33   timebuf->millitm = 0;
  34
  35   tp = localtime (&timebuf->time);
  36   if (tp == NULL)
  37     return -1;
  38
  39   timebuf->timezone = tp->tm_gmtoff / 60;
  40   timebuf->dstflag = tp->tm_isdst;
  41
  42   errno = save;
  43   return 0;
  44 }