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      1 /*	$NetBSD: ndbm.c,v 1.23 2008/09/11 12:58:00 joerg Exp $	*/
      2 /*	from: NetBSD: ndbm.c,v 1.18 2004/04/27 20:03:45 kleink Exp 	*/
      3 
      4 /*-
      5  * Copyright (c) 1990, 1993
      6  *	The Regents of the University of California.  All rights reserved.
      7  *
      8  * This code is derived from software contributed to Berkeley by
      9  * Margo Seltzer.
     10  *
     11  * Redistribution and use in source and binary forms, with or without
     12  * modification, are permitted provided that the following conditions
     13  * are met:
     14  * 1. Redistributions of source code must retain the above copyright
     15  *    notice, this list of conditions and the following disclaimer.
     16  * 2. Redistributions in binary form must reproduce the above copyright
     17  *    notice, this list of conditions and the following disclaimer in the
     18  *    documentation and/or other materials provided with the distribution.
     19  * 3. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 #if HAVE_NBTOOL_CONFIG_H
     37 #include "nbtool_config.h"
     38 #endif
     39 
     40 #include <sys/cdefs.h>
     41 __RCSID("$NetBSD: ndbm.c,v 1.23 2008/09/11 12:58:00 joerg Exp $");
     42 
     43 /*
     44  * This package provides a dbm compatible interface to the new hashing
     45  * package described in db(3).
     46  */
     47 #include "namespace.h"
     48 #include <sys/param.h>
     49 
     50 #include <fcntl.h>
     51 #include <stdio.h>
     52 #include <string.h>
     53 
     54 #include <ndbm.h>
     55 #include "hash.h"
     56 
     57 /*
     58  * Returns:
     59  * 	*DBM on success
     60  *	 NULL on failure
     61  */
     62 DBM *
     63 dbm_open(const char *file, int flags, mode_t mode)
     64 {
     65 	HASHINFO info;
     66 	char path[MAXPATHLEN];
     67 
     68 	info.bsize = 4096;
     69 	info.ffactor = 40;
     70 	info.nelem = 1;
     71 	info.cachesize = 0;
     72 	info.hash = NULL;
     73 	info.lorder = 0;
     74 	(void)strncpy(path, file, sizeof(path) - 1);
     75 	(void)strncat(path, DBM_SUFFIX, sizeof(path) - strlen(path) - 1);
     76 	if ((flags & O_ACCMODE) == O_WRONLY) {
     77 		flags &= ~O_WRONLY;
     78 		flags |= O_RDWR;
     79 	}
     80 	return ((DBM *)__hash_open(path, flags, mode, &info, 0));
     81 }
     82 
     83 void
     84 dbm_close(DBM *db)
     85 {
     86 	(void)(db->close)(db);
     87 }
     88 
     89 int
     90 dbm_error(DBM *db)
     91 {
     92 	HTAB *hp;
     93 
     94 	hp = db->internal;
     95 	return (hp->err);
     96 }
     97 
     98 int
     99 dbm_clearerr(DBM *db)
    100 {
    101 	HTAB *hp;
    102 
    103 	hp = db->internal;
    104 	hp->err = 0;
    105 	return (0);
    106 }
    107 
    108 int
    109 dbm_dirfno(DBM *db)
    110 {
    111 	HTAB *hp;
    112 
    113 	hp = db->internal;
    114 	return hp->fp;
    115 }
    116