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/* Copyright (C) 2004 Manuel Novoa III <mjn3@codepoet.org>
*
* GNU Library General Public License (LGPL) version 2 or later.
*
* Dedicated to Toni. See uClibc/DEDICATION.mjn3 for details.
*/
#include <features.h>
#ifdef __USE_GNU
#include "_stdio.h"
#ifndef __UCLIBC_HAS_GLIBC_CUSTOM_STREAMS__
#error no custom streams!
#endif
/* NOTE: GLIBC difference!!! -- fopencookie
* According to the info pages, glibc allows seeking within buffers even if
* no seek function is supplied. We don't. */
/* NOTE: GLIBC difference!!! -- fopencookie
* When compiled without large file support, the offset pointer for the
* cookie_seek function is off_t * and not off64_t * as for glibc. */
/* NOTE: GLIBC difference!!! -- fopencookie (bcc only)
* Since bcc doesn't support passing of structs, we define fopencookie as a
* macro in terms of _fopencookie which takes a struct * for the io functions
* instead.
*/
/* Currently no real reentrancy issues other than a possible double close(). */
#ifndef __BCC__
libc_hidden_proto(fopencookie)
FILE *fopencookie(void * __restrict cookie, const char * __restrict mode,
cookie_io_functions_t io_functions)
#else
FILE *_fopencookie(void * __restrict cookie, const char * __restrict mode,
register cookie_io_functions_t *io_functions)
#endif
{
FILE *stream;
/* Fake an fdopen guaranteed to pass the _stdio_fopen basic agreement
* check without an fcntl call. */
stream = _stdio_fopen(((intptr_t)(INT_MAX-1)), mode, NULL, INT_MAX);
if (stream) {
stream->__filedes = -1;
#ifndef __BCC__
stream->__gcs = io_functions;
#else
stream->__gcs.read = io_functions->read;
stream->__gcs.write = io_functions->write;
stream->__gcs.seek = io_functions->seek;
stream->__gcs.close = io_functions->close;
#endif
stream->__cookie = cookie;
__STDIO_STREAM_VALIDATE(stream);
}
return stream;
}
#ifndef __BCC__
libc_hidden_def(fopencookie)
#endif
#endif
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