usr/src/lib/krb5/plugins/kdb/db2/libdb2/db/db.c

   1 #pragma ident   "%Z%%M% %I%     %E% SMI"
   2
   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.
  15  * 3. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *      This product includes software developed by the University of
  18  *      California, Berkeley and its contributors.
  19  * 4. Neither the name of the University nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35
  36 #if defined(LIBC_SCCS) && !defined(lint)
  37 static char sccsid[] = "@(#)db.c        8.4 (Berkeley) 2/21/94";
  38 #endif /* LIBC_SCCS and not lint */
  39
  40 #include <sys/types.h>
  41
  42 #include <errno.h>
  43 #include <fcntl.h>
  44 #include <stddef.h>
  45 #include <stdio.h>
  46
  47 #include "db-int.h"
  48
  49 DB *
  50 kdb2_dbopen(fname, flags, mode, type, openinfo)
  51         const char *fname;
  52         int flags, mode;
  53         DBTYPE type;
  54         const void *openinfo;
  55 {
  56
  57 #define DB_FLAGS        (DB_LOCK | DB_SHMEM | DB_TXN)
  58 #define USE_OPEN_FLAGS                                                  \
  59         (O_CREAT | O_EXCL | O_EXLOCK | O_NONBLOCK | O_RDONLY |          \
  60          O_RDWR | O_SHLOCK | O_TRUNC | O_BINARY)
  61
  62         if ((flags & ~(USE_OPEN_FLAGS | DB_FLAGS)) == 0)
  63                 switch (type) {
  64                 case DB_BTREE:
  65                         return (__bt_open(fname, flags & USE_OPEN_FLAGS,
  66                             mode, openinfo, flags & DB_FLAGS));
  67                 case DB_HASH:
  68                         return (__hash_open(fname, flags & USE_OPEN_FLAGS,
  69                             mode, openinfo, flags & DB_FLAGS));
  70                 case DB_RECNO:
  71                         return (__rec_open(fname, flags & USE_OPEN_FLAGS,
  72                             mode, openinfo, flags & DB_FLAGS));
  73                 }
  74         errno = EINVAL;
  75         return (NULL);
  76 }
  77
  78 static int
  79 __dberr()
  80 {
  81         return (RET_ERROR);
  82 }
  83
  84 /*
  85  * __DBPANIC -- Stop.
  86  *
  87  * Parameters:
  88  *      dbp:    pointer to the DB structure.
  89  */
  90 void
  91 __dbpanic(dbp)
  92         DB *dbp;
  93 {
  94         /* The only thing that can succeed is a close. */
  95         dbp->del = (int (*)())__dberr;
  96         dbp->fd = (int (*)())__dberr;
  97         dbp->get = (int (*)())__dberr;
  98         dbp->put = (int (*)())__dberr;
  99         dbp->seq = (int (*)())__dberr;
 100         dbp->sync = (int (*)())__dberr;
 101 }