sysdeps/unix/utime.c

   1 /* Copyright (C) 1991, 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 <ansidecl.h>
  20 #include <sysdep.h>
  21 #include <errno.h>
  22 #include <utime.h>
  23 #include <time.h>
  24 #include <sys/types.h>
  25 #include <sys/time.h>
  26
  27
  28 /* Set the access and modification times of FILE to those given in TIMES.
  29    If TIMES is NULL, set them to the current time.  */
  30 int
  31 DEFUN(utime, (file, times), CONST char *file AND CONST struct utimbuf *times)
  32 {
  33   struct timeval timevals[2];
  34
  35   if (times != NULL)
  36     {
  37       timevals[0].tv_sec = (long int) times->actime;
  38       timevals[0].tv_usec = 0L;
  39       timevals[1].tv_sec = (long int) times->modtime;
  40       timevals[1].tv_usec = 0L;
  41     }
  42   else
  43     {
  44       if (__gettimeofday (&timevals[0], NULL) < 0)
  45         return -1;
  46       timevals[1] = timevals[0];
  47     }
  48
  49   return __utimes (file, timevals);
  50 }