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55 lines
1.6 KiB
C
55 lines
1.6 KiB
C
/* Copyright (C) 1991, 1992 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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#include <ansidecl.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <stdlib.h>
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/* Return a new, zeroed, stream.
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You must set its cookie and io_mode.
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The first operation will give it a buffer unless you do.
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It will also give it the default functions unless you set the `seen' flag.
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Returns NULL if a stream can't be created. */
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FILE *
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DEFUN_VOID(__newstream)
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{
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register FILE *stream;
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stream = __stdio_head;
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while (__validfp (stream))
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stream = stream->__next;
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if (stream == NULL)
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{
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/* None to reuse. */
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stream = (FILE *) malloc (sizeof (FILE));
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if (stream == NULL)
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return NULL;
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stream->__next = __stdio_head;
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__stdio_head = stream;
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}
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__invalidate (stream);
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stream->__magic = _IOMAGIC;
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stream->__offset = (fpos_t) -1;
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stream->__target = (fpos_t) -1;
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return stream;
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}
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