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      1 /*	$NetBSD: citrus_mapper_none.c,v 1.2 2003/06/27 17:53:31 tshiozak Exp $	*/
      2 
      3 /*-
      4  * Copyright (c)2003 Citrus Project,
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  */
     28 
     29 #include <sys/cdefs.h>
     30 #if defined(LIBC_SCCS) && !defined(lint)
     31 __RCSID("$NetBSD: citrus_mapper_none.c,v 1.2 2003/06/27 17:53:31 tshiozak Exp $");
     32 #endif /* LIBC_SCCS and not lint */
     33 
     34 #include <assert.h>
     35 #include <errno.h>
     36 #include <stdlib.h>
     37 #include <string.h>
     38 #include <sys/queue.h>
     39 
     40 #include "citrus_namespace.h"
     41 #include "citrus_types.h"
     42 #include "citrus_module.h"
     43 #include "citrus_hash.h"
     44 #include "citrus_mapper.h"
     45 #include "citrus_mapper_none.h"
     46 
     47 /* ---------------------------------------------------------------------- */
     48 
     49 _CITRUS_MAPPER_DECLS(mapper_none);
     50 _CITRUS_MAPPER_DEF_OPS(mapper_none);
     51 
     52 
     53 /* ---------------------------------------------------------------------- */
     54 
     55 int
     56 _citrus_mapper_none_mapper_getops(struct _citrus_mapper_ops *ops,
     57 				  size_t lenops, uint32_t expected_version)
     58 {
     59 	if (expected_version<_CITRUS_MAPPER_ABI_VERSION || lenops<sizeof(*ops))
     60 		return (EINVAL);
     61 
     62 	memcpy(ops, &_citrus_mapper_none_mapper_ops,
     63 	       sizeof(_citrus_mapper_none_mapper_ops));
     64 
     65 	return 0;
     66 }
     67 
     68 static int
     69 /*ARGSUSED*/
     70 _citrus_mapper_none_mapper_init(struct _citrus_mapper_area *__restrict ma,
     71 				struct _citrus_mapper * __restrict cm,
     72 				const char * __restrict dir,
     73 				const void * __restrict var, size_t lenvar,
     74 				struct _citrus_mapper_traits * __restrict mt,
     75 				size_t lenmt)
     76 {
     77 
     78 	_DIAGASSERT(cm && dir && mt);
     79 
     80 	if (lenmt<sizeof(*mt))
     81 		return (EINVAL);
     82 
     83 	cm->cm_closure = NULL;
     84 	mt->mt_src_max = mt->mt_dst_max = 1;	/* 1:1 converter */
     85 	mt->mt_state_size = 0;			/* stateless */
     86 
     87 	return 0;
     88 }
     89 
     90 static void
     91 /*ARGSUSED*/
     92 _citrus_mapper_none_mapper_uninit(struct _citrus_mapper *cm)
     93 {
     94 }
     95 
     96 static int
     97 /*ARGSUSED*/
     98 _citrus_mapper_none_mapper_convert(struct _citrus_mapper * __restrict cm,
     99 				   _citrus_index_t * __restrict dst,
    100 				   _citrus_index_t src, void * __restrict ps)
    101 {
    102 	*dst = src;
    103 	return _CITRUS_MAPPER_CONVERT_SUCCESS;
    104 }
    105 
    106 static void
    107 /*ARGSUSED*/
    108 _citrus_mapper_none_mapper_init_state(struct _citrus_mapper * __restrict cm,
    109 				      void * __restrict ps)
    110 {
    111 }
    112