1 /* $NetBSD: ndbm.c,v 1.21 2007/02/03 23:46:09 christos 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 #include <sys/cdefs.h> 37 #if defined(LIBC_SCCS) && !defined(lint) 38 #if 0 39 static char sccsid[] = "@(#)ndbm.c 8.4 (Berkeley) 7/21/94"; 40 #else 41 __RCSID("$NetBSD: ndbm.c,v 1.21 2007/02/03 23:46:09 christos Exp $"); 42 #endif 43 #endif /* LIBC_SCCS and not lint */ 44 45 /* 46 * This package provides a dbm compatible interface to the new hashing 47 * package described in db(3). 48 */ 49 #include "namespace.h" 50 #include <sys/param.h> 51 52 #include <fcntl.h> 53 #include <stdio.h> 54 #include <string.h> 55 56 #include <ndbm.h> 57 #include "hash.h" 58 59 /* 60 * Returns: 61 * *DBM on success 62 * NULL on failure 63 */ 64 DBM * 65 dbm_open(const char *file, int flags, mode_t mode) 66 { 67 HASHINFO info; 68 char path[MAXPATHLEN]; 69 70 info.bsize = 4096; 71 info.ffactor = 40; 72 info.nelem = 1; 73 info.cachesize = 0; 74 info.hash = NULL; 75 info.lorder = 0; 76 (void)strncpy(path, file, sizeof(path) - 1); 77 (void)strncat(path, DBM_SUFFIX, sizeof(path) - strlen(path) - 1); 78 if ((flags & O_ACCMODE) == O_WRONLY) { 79 flags &= ~O_WRONLY; 80 flags |= O_RDWR; 81 } 82 return ((DBM *)__hash_open(path, flags, mode, &info, 0)); 83 } 84 85 void 86 dbm_close(DBM *db) 87 { 88 (void)(db->close)(db); 89 } 90 91 int 92 dbm_error(DBM *db) 93 { 94 HTAB *hp; 95 96 hp = db->internal; 97 return (hp->err); 98 } 99 100 int 101 dbm_clearerr(DBM *db) 102 { 103 HTAB *hp; 104 105 hp = db->internal; 106 hp->err = 0; 107 return (0); 108 } 109 110 int 111 dbm_dirfno(DBM *db) 112 { 113 HTAB *hp; 114 115 hp = db->internal; 116 return hp->fp; 117 } 118