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/* $NetBSD: funopen.c,v 1.10 2005/11/29 03:12:00 christos Exp $ */
/*-
* Copyright (c) 1990, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Chris Torek.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <LibConfig.h>
#include <sys/EfiCdefs.h>
#if defined(LIBC_SCCS) && !defined(lint)
#if 0
static char sccsid[] = "@(#)funopen.c 8.1 (Berkeley) 6/4/93";
#else
__RCSID("$NetBSD: funopen.c,v 1.10 2005/11/29 03:12:00 christos Exp $");
#endif
#endif /* LIBC_SCCS and not lint */
#include <stdio.h>
#include <errno.h>
#include "reentrant.h"
#include "local.h"
FILE *
funopen(cookie, readfn, writefn, seekfn, closefn)
const void *cookie;
int (*readfn) __P((void *, char *, int));
int (*writefn) __P((void *, const char *, int));
fpos_t (*seekfn) __P((void *, fpos_t, int));
int (*closefn) __P((void *));
{
FILE *fp;
int flags;
if (readfn == NULL) {
if (writefn == NULL) { /* illegal */
errno = EINVAL;
return (NULL);
} else
flags = __SWR; /* write only */
} else {
if (writefn == NULL)
flags = __SRD; /* read only */
else
flags = __SRW; /* read-write */
}
if ((fp = __sfp()) == NULL)
return (NULL);
fp->_flags = flags;
fp->_file = -1;
fp->_cookie = __UNCONST(cookie);
fp->_read = readfn;
fp->_write = writefn;
fp->_seek = seekfn;
fp->_close = closefn;
return (fp);
}
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