2 * Copyright (c) 1991, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
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26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * @(#)db.c 8.4 (Berkeley) 2/21/94
36 #include <sys/types.h>
46 dbopen(fname, flags, mode, type, openinfo)
53 #define DB_FLAGS (DB_LOCK | DB_SHMEM | DB_TXN)
54 #define USE_OPEN_FLAGS \
55 (O_CREAT | O_EXCL | O_EXLOCK | O_NONBLOCK | O_RDONLY | \
56 O_RDWR | O_SHLOCK | O_TRUNC)
58 if ((flags & ~(USE_OPEN_FLAGS | DB_FLAGS)) == 0)
61 return (__bt_open(fname, flags & USE_OPEN_FLAGS,
62 mode, openinfo, flags & DB_FLAGS));
64 return (__hash_open(fname, flags & USE_OPEN_FLAGS,
65 mode, openinfo, flags & DB_FLAGS));
67 return (__rec_open(fname, flags & USE_OPEN_FLAGS,
68 mode, openinfo, flags & DB_FLAGS));
84 * dbp: pointer to the DB structure.
90 /* The only thing that can succeed is a close. */
91 dbp->del = (int (*)())__dberr;
92 dbp->fd = (int (*)())__dberr;
93 dbp->get = (int (*)())__dberr;
94 dbp->put = (int (*)())__dberr;
95 dbp->seq = (int (*)())__dberr;
96 dbp->sync = (int (*)())__dberr;