/* 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 "_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__ 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; }