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 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)db.c 8.4 (Berkeley) 2/21/94 34 * $DragonFly: src/lib/libc/db/db/db.c,v 1.3 2005/04/25 08:25:23 joerg Exp $ 35 */ 36 37 #include <sys/types.h> 38 39 #include <errno.h> 40 #include <fcntl.h> 41 #include <stddef.h> 42 #include <stdio.h> 43 44 #include <db.h> 45 46 DB * 47 dbopen(const char *fname, int flags, int mode, DBTYPE type, const void *openinfo) 48 { 49 50 #define DB_FLAGS (DB_LOCK | DB_SHMEM | DB_TXN) 51 #define USE_OPEN_FLAGS \ 52 (O_CREAT | O_EXCL | O_EXLOCK | O_NONBLOCK | O_RDONLY | \ 53 O_RDWR | O_SHLOCK | O_TRUNC) 54 55 if ((flags & ~(USE_OPEN_FLAGS | DB_FLAGS)) == 0) 56 switch (type) { 57 case DB_BTREE: 58 return (__bt_open(fname, flags & USE_OPEN_FLAGS, 59 mode, openinfo, flags & DB_FLAGS)); 60 case DB_HASH: 61 return (__hash_open(fname, flags & USE_OPEN_FLAGS, 62 mode, openinfo, flags & DB_FLAGS)); 63 case DB_RECNO: 64 return (__rec_open(fname, flags & USE_OPEN_FLAGS, 65 mode, openinfo, flags & DB_FLAGS)); 66 } 67 errno = EINVAL; 68 return (NULL); 69 } 70 71 static int 72 __dberr(void) 73 { 74 return (RET_ERROR); 75 } 76 77 /* 78 * __DBPANIC -- Stop. 79 * 80 * Parameters: 81 * dbp: pointer to the DB structure. 82 */ 83 void 84 __dbpanic(DB *dbp) 85 { 86 /* The only thing that can succeed is a close. */ 87 dbp->del = (int (*)(const DB *, const DBT *, u_int))__dberr; 88 dbp->fd = (int (*)(const DB *))__dberr; 89 dbp->get = (int (*)(const DB *, const DBT *, DBT *, u_int))__dberr; 90 dbp->put = (int (*)(const DB *, DBT *, const DBT *, u_int))__dberr; 91 dbp->seq = (int (*)(const DB *, DBT *, DBT *, u_int))__dberr; 92 dbp->sync = (int (*)(const DB *, u_int))__dberr; 93 } 94