Asterisk - The Open Source Telephony Project  GIT-master-4a4f1a5
utils/db1-ast/db/db.c
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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 "../include/db.h"
46 
47 DB *
48 dbopen(fname, flags, mode, type, openinfo)
49  const char *fname;
50  int flags, mode;
51  DBTYPE type;
52  const void *openinfo;
53 {
54 
55 #define DB_FLAGS (DB_LOCK | DB_SHMEM | DB_TXN)
56 #define USE_OPEN_FLAGS \
57  (O_CREAT | O_EXCL | O_EXLOCK | O_NONBLOCK | O_RDONLY | \
58  O_RDWR | O_SHLOCK | O_TRUNC)
59 
60  if ((flags & ~(USE_OPEN_FLAGS | DB_FLAGS)) == 0)
61  switch (type) {
62  case DB_BTREE:
63  return (__bt_open(fname, flags & USE_OPEN_FLAGS,
64  mode, openinfo, flags & DB_FLAGS));
65  case DB_HASH:
66  return (__hash_open(fname, flags & USE_OPEN_FLAGS,
67  mode, openinfo, flags & DB_FLAGS));
68  case DB_RECNO:
69  return (__rec_open(fname, flags & USE_OPEN_FLAGS,
70  mode, openinfo, flags & DB_FLAGS));
71  }
72  errno = EINVAL;
73  return (NULL);
74 }
75 
76 static int
77 __dberr __P((void))
78 {
79  return (RET_ERROR);
80 }
81 
82 /*
83  * __DBPANIC -- Stop.
84  *
85  * Parameters:
86  * dbp: pointer to the DB structure.
87  */
88 void
90  DB *dbp;
91 {
92  /* The only thing that can succeed is a close. */
93  dbp->del = (int (*)__P((const struct __db *,
94  const DBT *, u_int))) __dberr;
95  dbp->get = (int (*)__P((const struct __db *,
96  const DBT *, DBT *, u_int))) __dberr;
97  dbp->put = (int (*)__P((const struct __db *,
98  DBT *, const DBT *, u_int))) __dberr;
99  dbp->seq = (int (*)__P((const struct __db *,
100  DBT *, DBT *, u_int))) __dberr;
101  dbp->sync = (int (*)__P((const struct __db *, u_int))) __dberr;
102  dbp->fd = (int (*)__P((const struct __db *))) __dberr;
103 }
DB * __bt_open(char *fname, int flags, int mode, const BTREEINFO *openinfo, int dflags) const
Definition: bt_open.c:90
static const char type[]
Definition: chan_ooh323.c:109
DBTYPE
Definition: db.h:103
@ DB_BTREE
Definition: db.h:103
@ DB_RECNO
Definition: db.h:103
@ DB_HASH
Definition: db.h:103
#define RET_ERROR
Definition: db.h:51
DB * __hash_open(char *file, int flags, int mode, const HASHINFO *info, int dflags) const
Definition: hash.c:96
static DB * dbp
Definition: hsearch.c:49
int errno
DB * __rec_open(char *fname, int flags, int mode, const RECNOINFO *openinfo, int dflags) const
Definition: rec_open.c:56
#define NULL
Definition: resample.c:96
Definition: db.h:85
Definition: db.h:129
#define DB_FLAGS
DB * dbopen(char *fname, int flags, int mode, DBTYPE type, const void *openinfo) const
#define USE_OPEN_FLAGS
void __dbpanic(DB *dbp)
static int __dberr __P((void))