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/* $OpenBSD: db.c,v 1.1 2005/08/03 22:33:59 espie Exp $ */
/*-
* Copyright (c) 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/types.h>
#include <errno.h>
#include <fcntl.h>
#include <stddef.h>
#include <stdio.h>
#include <db.h>
static int __dberr(void);
DB *
dbopen(const char *fname, int flags, int mode, DBTYPE type,
const void *openinfo)
{
#define DB_FLAGS (DB_LOCK | DB_SHMEM | DB_TXN)
#define USE_OPEN_FLAGS \
(O_CREAT | O_EXCL | O_EXLOCK | O_NOFOLLOW | O_NONBLOCK | \
O_RDONLY | O_RDWR | O_SHLOCK | O_SYNC | O_TRUNC)
if ((flags & ~(USE_OPEN_FLAGS | DB_FLAGS)) == 0)
switch (type) {
case DB_HASH:
return (__hash_open(fname, flags & USE_OPEN_FLAGS,
mode, openinfo, flags & DB_FLAGS));
}
errno = EINVAL;
return (NULL);
}
static int
__dberr(void)
{
return (RET_ERROR);
}
/*
* __DBPANIC -- Stop.
*
* Parameters:
* dbp: pointer to the DB structure.
*/
void
__dbpanic(DB *dbp)
{
/* The only thing that can succeed is a close. */
dbp->del = (int (*)(const struct __db *, const DBT*, u_int))__dberr;
dbp->fd = (int (*)(const struct __db *))__dberr;
dbp->get = (int (*)(const struct __db *, const DBT*, DBT *, u_int))__dberr;
dbp->put = (int (*)(const struct __db *, DBT *, const DBT *, u_int))__dberr;
dbp->seq = (int (*)(const struct __db *, DBT *, DBT *, u_int))__dberr;
dbp->sync = (int (*)(const struct __db *, u_int))__dberr;
}
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