libs/port/futimes.c

   1 /*
   2  * futimes function
   3  *
   4  * Copyright 2004 Alexandre Julliard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "config.h"
  22 #include "wine/port.h"
  23
  24 #ifndef HAVE_FUTIMES
  25
  26 #include <sys/types.h>
  27 #include <sys/time.h>
  28 #include <utime.h>
  29 #include <stdio.h>
  30 #include <errno.h>
  31
  32 int futimes(int fd, const struct timeval tv[2])
  33 {
  34 #ifdef linux
  35     char buffer[sizeof("/proc/self/fd/") + 3*sizeof(int)];
  36
  37     sprintf( buffer, "/proc/self/fd/%u", fd );
  38     if (tv)
  39     {
  40         struct utimbuf ut;
  41         ut.actime  = tv[0].tv_sec + (tv[0].tv_usec + 500000) / 1000000;
  42         ut.modtime = tv[1].tv_sec + (tv[1].tv_usec + 500000) / 1000000;
  43         return utime( buffer, &ut );
  44     }
  45     else return utime( buffer, NULL );
  46 #elif defined(HAVE_FUTIMESAT)
  47     return futimesat( fd, NULL, tv );
  48 #else
  49     errno = ENOSYS;
  50     return -1;
  51 #endif
  52 }
  53
  54 #endif  /* HAVE_FUTIMES */