sysdeps/stub/mmap.c

   1 /* Copyright (C) 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 <sys/types.h>
  20 #include <sys/mman.h>
  21 #include <errno.h>
  22
  23 /* Map addresses starting near ADDR and extending for LEN bytes.  from
  24    OFFSET into the file FD describes according to PROT and FLAGS.  If ADDR
  25    is nonzero, it is the desired mapping address.  If the MAP_FIXED bit is
  26    set in FLAGS, the mapping will be at ADDR exactly (which must be
  27    page-aligned); otherwise the system chooses a convenient nearby address.
  28    The return value is the actual mapping address chosen or (caddr_t) -1
  29    for errors (in which case `errno' is set).  A successful `mmap' call
  30    deallocates any previous mapping for the affected region.  */
  31
  32 caddr_t
  33 mmap (caddr_t addr, size_t len, int prot, int flags, int fd, off_t offset)
  34 {
  35   errno = ENOSYS;
  36   return (caddr_t) -1;
  37 }
  38