| /* Copyright (C) 1991, 1992, 1997 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Library General Public License as |
| published by the Free Software Foundation; either version 2 of the |
| License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Library General Public License for more details. |
| |
| You should have received a copy of the GNU Library General Public |
| License along with the GNU C Library; see the file COPYING.LIB. If not, |
| write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, USA. */ |
| |
| #include <stddef.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| |
| |
| /* Return a new, zeroed, stream. |
| You must set its cookie and io_mode. |
| The first operation will give it a buffer unless you do. |
| It will also give it the default functions unless you set the `seen' flag. |
| Returns NULL if a stream can't be created. */ |
| FILE * |
| __newstream (void) |
| { |
| register FILE *stream; |
| |
| stream = __stdio_head; |
| while (__validfp (stream)) |
| stream = stream->__next; |
| if (stream == NULL) |
| { |
| /* None to reuse. */ |
| stream = (FILE *) malloc (sizeof (FILE)); |
| if (stream == NULL) |
| return NULL; |
| stream->__next = __stdio_head; |
| __stdio_head = stream; |
| } |
| |
| __invalidate (stream); |
| stream->__magic = _IOMAGIC; |
| stream->__offset = (fpos_t) -1; |
| stream->__target = (fpos_t) -1; |
| |
| return stream; |
| } |