sysdeps/mach/hurd/pread.c

   1 /* Read block from given position in file without changing file pointer.
   2    Hurd version.
   3    Copyright (C) 1999 Free Software Foundation, Inc.
   4    This file is part of the GNU C Library.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Library General Public License as
   8    published by the Free Software Foundation; either version 2 of the
   9    License, or (at your option) any later version.
  10
  11    The GNU C 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    Library General Public License for more details.
  15
  16    You should have received a copy of the GNU Library General Public
  17    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  18    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19    Boston, MA 02111-1307, USA.  */
  20
  21 #include <errno.h>
  22 #include <unistd.h>
  23 #include <hurd/fd.h>
  24
  25 ssize_t
  26 __pread (int fd, void *buf, size_t nbytes, off_t offset)
  27 {
  28   error_t err = HURD_FD_USE (fd, _hurd_fd_read (descriptor,
  29                                                 buf, &nbytes, offset));
  30   return err ? __hurd_dfail (fd, err) : nbytes;
  31 }
  32 weak_alias (__pread, pread)