sysdeps/mach/hurd/flock.c

   1 /* Copyright (C) 1992, 1994, 1995, 1997 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 Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the 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    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19 #include <errno.h>
  20 #include <sys/file.h>
  21 #include <hurd/fd.h>
  22 #include <hurd/fs.h>
  23
  24 /* Apply or remove an advisory lock, according to OPERATION,
  25    on the file FD refers to.  */
  26 int
  27 __flock (fd, operation)
  28      int fd;
  29      int operation;
  30 {
  31   error_t err;
  32
  33   if (err = HURD_DPORT_USE (fd, __file_lock (port, operation)))
  34     return __hurd_dfail (fd, err);
  35
  36   return 0;
  37 }
  38
  39 weak_alias (__flock, flock)