sysdeps/mach/hurd/fsync.c

   1 /* Copyright (C) 1991 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 <errno.h>
  21 #include <unistd.h>
  22 #include <hurd.h>
  23
  24 /* Make all changes done to FD actually appear on disk.  */
  25 int
  26 DEFUN(fsync, (fd), int fd)
  27 {
  28   error_t err;
  29   file_t server;
  30   __mutex_lock (&_hurd_dtable.lock);
  31   server = _hurd_dport (fd);
  32   if (server == MACH_PORT_NULL)
  33     return -1;
  34   __mutex_unlock (&_hurd_dtable.lock);
  35
  36   if (err = __file_sync (server))
  37     return __hurd_fail (err);
  38   return 0;
  39 }