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