stdio/fopncook.c

   1 /* Copyright (C) 1991, 1992, 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 <stdio.h>
  20
  21
  22 /* Defined in fopen.c.  */
  23 extern int __getmode __P ((const char *mode, __io_mode *mptr));
  24
  25 /* Open a new stream on the given magic cookie descriptor.  */
  26 FILE *
  27 fopencookie (cookie, mode, functions)
  28      void *cookie;
  29      const char *mode;
  30      __io_functions functions;
  31 {
  32   __io_mode m;
  33   FILE *f;
  34
  35   if (!__getmode (mode, &m))
  36     return NULL;
  37
  38   f = __newstream ();
  39   if (f == NULL)
  40     return NULL;
  41
  42   f->__cookie = cookie;
  43   f->__mode = m;
  44   f->__io_funcs = functions;
  45   f->__room_funcs = __default_room_functions;
  46   f->__seen = 1;
  47
  48   return f;
  49 }