stdio/fopncook.c

   1 /* Copyright (C) 1991, 1992 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 <stdio.h>
  21
  22
  23 /* Defined in fopen.c.  */
  24 extern int EXFUN(__getmode, (CONST char *mode, __io_mode *mptr));
  25
  26 /* Open a new stream on the given magic cookie descriptor.  */
  27 FILE *
  28 DEFUN(fopencookie, (cookie, mode, functions),
  29       PTR cookie AND CONST char *mode AND __io_functions functions)
  30 {
  31   __io_mode m;
  32   FILE *f;
  33
  34   if (!__getmode (mode, &m))
  35     return NULL;
  36
  37   f = __newstream ();
  38   if (f == NULL)
  39     return NULL;
  40
  41   f->__cookie = cookie;
  42   f->__mode = m;
  43   f->__io_funcs = functions;
  44   f->__room_funcs = __default_room_functions;
  45   f->__seen = 1;
  46
  47   return f;
  48 }