minix/lib/libc/citrus/modules/citrus_mapper_none.c

/*	$NetBSD: citrus_mapper_none.c,v 1.2 2003/06/27 17:53:31 tshiozak Exp $	*/

/*-
 * Copyright (c)2003 Citrus Project,
 * All rights reserved.
 *
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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 <sys/cdefs.h>
#if defined(LIBC_SCCS) && !defined(lint)
__RCSID("$NetBSD: citrus_mapper_none.c,v 1.2 2003/06/27 17:53:31 tshiozak Exp $");
#endif /* LIBC_SCCS and not lint */

#include <assert.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <sys/queue.h>

#include "citrus_namespace.h"
#include "citrus_types.h"
#include "citrus_module.h"
#include "citrus_hash.h"
#include "citrus_mapper.h"
#include "citrus_mapper_none.h"

/* ---------------------------------------------------------------------- */

_CITRUS_MAPPER_DECLS(mapper_none);
_CITRUS_MAPPER_DEF_OPS(mapper_none);


/* ---------------------------------------------------------------------- */

int
_citrus_mapper_none_mapper_getops(struct _citrus_mapper_ops *ops,
				  size_t lenops, uint32_t expected_version)
{
	if (expected_version<_CITRUS_MAPPER_ABI_VERSION || lenops<sizeof(*ops))
		return (EINVAL);

	memcpy(ops, &_citrus_mapper_none_mapper_ops,
	       sizeof(_citrus_mapper_none_mapper_ops));

	return 0;
}

static int
/*ARGSUSED*/
_citrus_mapper_none_mapper_init(struct _citrus_mapper_area *__restrict ma,
				struct _citrus_mapper * __restrict cm,
				const char * __restrict dir,
				const void * __restrict var, size_t lenvar,
				struct _citrus_mapper_traits * __restrict mt,
				size_t lenmt)
{

	_DIAGASSERT(cm && dir && mt);

	if (lenmt<sizeof(*mt))
		return (EINVAL);

	cm->cm_closure = NULL;
	mt->mt_src_max = mt->mt_dst_max = 1;	/* 1:1 converter */
	mt->mt_state_size = 0;			/* stateless */

	return 0;
}

static void
/*ARGSUSED*/
_citrus_mapper_none_mapper_uninit(struct _citrus_mapper *cm)
{
}

static int
/*ARGSUSED*/
_citrus_mapper_none_mapper_convert(struct _citrus_mapper * __restrict cm,
				   _citrus_index_t * __restrict dst,
				   _citrus_index_t src, void * __restrict ps)
{
	*dst = src;
	return _CITRUS_MAPPER_CONVERT_SUCCESS;
}

static void
/*ARGSUSED*/
_citrus_mapper_none_mapper_init_state(struct _citrus_mapper * __restrict cm,
				      void * __restrict ps)
{
}