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Annotation of src/lib/libc/db/db/db.c, Revision 1.14

1.14    ! christos    1: /*     $NetBSD: db.c,v 1.13 2003/08/07 16:42:42 agc Exp $      */
1.7       cgd         2:
1.1       cgd         3: /*-
                      4:  * Copyright (c) 1991, 1993
                      5:  *     The Regents of the University of California.  All rights reserved.
                      6:  *
                      7:  * Redistribution and use in source and binary forms, with or without
                      8:  * modification, are permitted provided that the following conditions
                      9:  * are met:
                     10:  * 1. Redistributions of source code must retain the above copyright
                     11:  *    notice, this list of conditions and the following disclaimer.
                     12:  * 2. Redistributions in binary form must reproduce the above copyright
                     13:  *    notice, this list of conditions and the following disclaimer in the
                     14:  *    documentation and/or other materials provided with the distribution.
1.13      agc        15:  * 3. Neither the name of the University nor the names of its contributors
1.1       cgd        16:  *    may be used to endorse or promote products derived from this software
                     17:  *    without specific prior written permission.
                     18:  *
                     19:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     20:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     21:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     22:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     23:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     24:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     25:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     26:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     27:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     28:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     29:  * SUCH DAMAGE.
                     30:  */
                     31:
1.8       christos   32: #include <sys/cdefs.h>
1.1       cgd        33: #if defined(LIBC_SCCS) && !defined(lint)
1.7       cgd        34: #if 0
1.6       cgd        35: static char sccsid[] = "@(#)db.c       8.4 (Berkeley) 2/21/94";
1.7       cgd        36: #else
1.14    ! christos   37: __RCSID("$NetBSD: db.c,v 1.13 2003/08/07 16:42:42 agc Exp $");
1.7       cgd        38: #endif
1.1       cgd        39: #endif /* LIBC_SCCS and not lint */
                     40:
1.9       jtc        41: #include "namespace.h"
1.1       cgd        42: #include <sys/types.h>
                     43:
                     44: #include <errno.h>
1.4       cgd        45: #include <fcntl.h>
1.1       cgd        46: #include <stddef.h>
                     47: #include <stdio.h>
                     48:
                     49: #include <db.h>
1.14    ! christos   50: static int __dberr(void);
1.9       jtc        51:
                     52: #ifdef __weak_alias
1.12      mycroft    53: __weak_alias(dbopen,_dbopen)
1.9       jtc        54: #endif
1.1       cgd        55:
                     56: DB *
1.14    ! christos   57: dbopen(const char *fname, int flags, mode_t mode, DBTYPE type,
        !            58:     const void *openinfo)
1.1       cgd        59: {
1.4       cgd        60:
                     61: #define        DB_FLAGS        (DB_LOCK | DB_SHMEM | DB_TXN)
                     62: #define        USE_OPEN_FLAGS                                                  \
1.5       cgd        63:        (O_CREAT | O_EXCL | O_EXLOCK | O_NONBLOCK | O_RDONLY |          \
                     64:         O_RDWR | O_SHLOCK | O_TRUNC)
1.4       cgd        65:
                     66:        if ((flags & ~(USE_OPEN_FLAGS | DB_FLAGS)) == 0)
                     67:                switch (type) {
                     68:                case DB_BTREE:
                     69:                        return (__bt_open(fname, flags & USE_OPEN_FLAGS,
1.11      christos   70:                            mode, openinfo, (int)(flags & DB_FLAGS)));
1.4       cgd        71:                case DB_HASH:
                     72:                        return (__hash_open(fname, flags & USE_OPEN_FLAGS,
1.11      christos   73:                            mode, openinfo, (int)(flags & DB_FLAGS)));
1.4       cgd        74:                case DB_RECNO:
                     75:                        return (__rec_open(fname, flags & USE_OPEN_FLAGS,
1.11      christos   76:                            mode, openinfo, (int)(flags & DB_FLAGS)));
1.4       cgd        77:                }
1.1       cgd        78:        errno = EINVAL;
                     79:        return (NULL);
                     80: }
                     81:
                     82: static int
1.14    ! christos   83: __dberr(void)
1.1       cgd        84: {
                     85:        return (RET_ERROR);
                     86: }
                     87:
                     88: /*
                     89:  * __DBPANIC -- Stop.
                     90:  *
                     91:  * Parameters:
                     92:  *     dbp:    pointer to the DB structure.
                     93:  */
                     94: void
1.14    ! christos   95: __dbpanic(DB *dbp)
1.1       cgd        96: {
                     97:        /* The only thing that can succeed is a close. */
1.8       christos   98:        dbp->del = (int (*)(const struct __db *, const DBT*, u_int))__dberr;
                     99:        dbp->fd = (int (*)(const struct __db *))__dberr;
                    100:        dbp->get = (int (*)(const struct __db *, const DBT*, DBT *, u_int))__dberr;
                    101:        dbp->put = (int (*)(const struct __db *, DBT *, const DBT *, u_int))__dberr;
                    102:        dbp->seq = (int (*)(const struct __db *, DBT *, DBT *, u_int))__dberr;
                    103:        dbp->sync = (int (*)(const struct __db *, u_int))__dberr;
1.1       cgd       104: }

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