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 34 #if defined(LIBC_SCCS) && !defined(lint) 35 static char sccsid[] = "@(#)db.c 8.4 (Berkeley) 2/21/94"; 36 #endif /* LIBC_SCCS and not lint */ 37 38 #include <sys/types.h> 39 40 #include <errno.h> 41 #include <fcntl.h> 42 #include <stddef.h> 43 #include <stdio.h> 44 45 #include "db-int.h" 46 47 DB * 48 kdb2_dbopen(const char *fname, int flags, int mode, DBTYPE type, 49 const void *openinfo) 50 { 51 52 #define DB_FLAGS (DB_LOCK | DB_SHMEM | DB_TXN) 53 #define USE_OPEN_FLAGS \ 54 (O_CREAT | O_EXCL | O_EXLOCK | O_NONBLOCK | O_RDONLY | \ 55 O_RDWR | O_SHLOCK | O_TRUNC | O_BINARY) 56 57 if ((flags & ~(USE_OPEN_FLAGS | DB_FLAGS)) == 0) 58 switch (type) { 59 case DB_BTREE: 60 return (__bt_open(fname, flags & USE_OPEN_FLAGS, 61 mode, openinfo, flags & DB_FLAGS)); 62 case DB_HASH: 63 return (__hash_open(fname, flags & USE_OPEN_FLAGS, 64 mode, openinfo, flags & DB_FLAGS)); 65 case DB_RECNO: 66 return (__rec_open(fname, flags & USE_OPEN_FLAGS, 67 mode, openinfo, flags & DB_FLAGS)); 68 } 69 errno = EINVAL; 70 return (NULL); 71 } 72 73 static int 74 __dberr(void) 75 { 76 return (RET_ERROR); 77 } 78 79 /* 80 * __DBPANIC -- Stop. 81 * 82 * Parameters: 83 * dbp: pointer to the DB structure. 84 */ 85 void 86 __dbpanic(DB *dbp) 87 { 88 /* The only thing that can succeed is a close. */ 89 dbp->del = (int (*)(const struct __db *, const DBT *, u_int))__dberr; 90 dbp->fd = (int (*)(const struct __db *))__dberr; 91 dbp->get = (int (*)(const struct __db *, const DBT *, DBT *, 92 u_int))__dberr; 93 dbp->put = (int (*)(const struct __db *, DBT *, const DBT *, 94 u_int))__dberr; 95 dbp->seq = (int (*)(const struct __db *, DBT *, DBT *, u_int))__dberr; 96 dbp->sync = (int (*)(const struct __db *, u_int))__dberr; 97 } 98