1/*- 2 * Copyright (c) 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30#if defined(LIBC_SCCS) && !defined(lint) 31static char sccsid[] = "@(#)db.c 8.4 (Berkeley) 2/21/94"; 32#endif /* LIBC_SCCS and not lint */ 33#include <sys/cdefs.h> 34__FBSDID("$FreeBSD$"); 35 36#include <sys/types.h> 37 38#include <errno.h> 39#include <fcntl.h> 40#include <stddef.h> 41#include <stdio.h> 42 43#include <db.h> 44 45static int __dberr(void); 46 47DB * 48dbopen(const char *fname, int flags, int mode, DBTYPE type, const void *openinfo) 49{ 50 51#define DB_FLAGS (DB_LOCK | DB_SHMEM | DB_TXN) 52#define USE_OPEN_FLAGS \ 53 (O_CREAT | O_EXCL | O_EXLOCK | O_NOFOLLOW | O_NONBLOCK | \ 54 O_RDONLY | O_RDWR | O_SHLOCK | O_SYNC | O_TRUNC) 55 56 if ((flags & ~(USE_OPEN_FLAGS | DB_FLAGS)) == 0) 57 switch (type) { 58 case DB_BTREE: 59 return (__bt_open(fname, flags & USE_OPEN_FLAGS, 60 mode, openinfo, flags & DB_FLAGS)); 61 case DB_HASH: 62 return (__hash_open(fname, flags & USE_OPEN_FLAGS, 63 mode, openinfo, flags & DB_FLAGS)); 64 case DB_RECNO: 65 return (__rec_open(fname, flags & USE_OPEN_FLAGS, 66 mode, openinfo, flags & DB_FLAGS)); 67 } 68 errno = EINVAL; 69 return (NULL); 70} 71 72static int 73__dberr(void) 74{ 75 return (RET_ERROR); 76} 77 78/* 79 * __DBPANIC -- Stop. 80 * 81 * Parameters: 82 * dbp: pointer to the DB structure. 83 */ 84void 85__dbpanic(DB *dbp) 86{ 87 /* The only thing that can succeed is a close. */ 88 dbp->del = (int (*)(const struct __db *, const DBT*, u_int))__dberr; 89 dbp->fd = (int (*)(const struct __db *))__dberr; 90 dbp->get = (int (*)(const struct __db *, const DBT*, DBT *, u_int))__dberr; 91 dbp->put = (int (*)(const struct __db *, DBT *, const DBT *, u_int))__dberr; 92 dbp->seq = (int (*)(const struct __db *, DBT *, DBT *, u_int))__dberr; 93 dbp->sync = (int (*)(const struct __db *, u_int))__dberr; 94} 95