180 lines
5.8 KiB
C
180 lines
5.8 KiB
C
/*-
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* See the file LICENSE for redistribution information.
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*
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* Copyright (c) 1996, 1997, 1998
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* Sleepycat Software. All rights reserved.
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*/
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/*
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* Copyright (c) 1990, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)db_185.h.src 8.7 (Sleepycat) 4/10/98
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*/
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#ifndef _DB_185_H_
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#define _DB_185_H_
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#include <sys/types.h>
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#include <limits.h>
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/*
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* XXX
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* Handle function prototypes and the keyword "const". This steps on name
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* space that DB doesn't control, but all of the other solutions are worse.
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*/
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#undef __P
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#if defined(__STDC__) || defined(__cplusplus)
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#define __P(protos) protos /* ANSI C prototypes */
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#else
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#define const
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#define __P(protos) () /* K&R C preprocessor */
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#endif
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#define RET_ERROR -1 /* Return values. */
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#define RET_SUCCESS 0
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#define RET_SPECIAL 1
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#ifndef __BIT_TYPES_DEFINED__
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#define __BIT_TYPES_DEFINED__
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#endif
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/*
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* XXX
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* SGI/IRIX already has a pgno_t.
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*/
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#ifdef sgi
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#define pgno_t db_pgno_t
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#endif
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#define MAX_PAGE_NUMBER 0xffffffff /* >= # of pages in a file */
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typedef u_int32_t pgno_t;
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#define MAX_PAGE_OFFSET 65535 /* >= # of bytes in a page */
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typedef u_int16_t indx_t;
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#define MAX_REC_NUMBER 0xffffffff /* >= # of records in a tree */
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typedef u_int32_t recno_t;
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/* Key/data structure -- a Data-Base Thang. */
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typedef struct {
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void *data; /* data */
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size_t size; /* data length */
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} DBT;
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/* Routine flags. */
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#define R_CURSOR 1 /* del, put, seq */
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#define __R_UNUSED 2 /* UNUSED */
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#define R_FIRST 3 /* seq */
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#define R_IAFTER 4 /* put (RECNO) */
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#define R_IBEFORE 5 /* put (RECNO) */
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#define R_LAST 6 /* seq (BTREE, RECNO) */
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#define R_NEXT 7 /* seq */
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#define R_NOOVERWRITE 8 /* put */
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#define R_PREV 9 /* seq (BTREE, RECNO) */
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#define R_SETCURSOR 10 /* put (RECNO) */
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#define R_RECNOSYNC 11 /* sync (RECNO) */
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typedef enum { DB_BTREE, DB_HASH, DB_RECNO } DBTYPE;
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/* Access method description structure. */
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typedef struct __db {
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DBTYPE type; /* Underlying db type. */
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int (*close) __P((struct __db *));
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int (*del) __P((const struct __db *, const DBT *, u_int));
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int (*get) __P((const struct __db *, const DBT *, DBT *, u_int));
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int (*put) __P((const struct __db *, DBT *, const DBT *, u_int));
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int (*seq) __P((const struct __db *, DBT *, DBT *, u_int));
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int (*sync) __P((const struct __db *, u_int));
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void *internal; /* Access method private. */
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int (*fd) __P((const struct __db *));
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} DB;
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#define BTREEMAGIC 0x053162
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#define BTREEVERSION 3
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/* Structure used to pass parameters to the btree routines. */
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typedef struct {
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#define R_DUP 0x01 /* duplicate keys */
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u_int32_t flags;
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u_int32_t cachesize; /* bytes to cache */
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u_int32_t maxkeypage; /* maximum keys per page */
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u_int32_t minkeypage; /* minimum keys per page */
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u_int32_t psize; /* page size */
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int (*compare) /* comparison function */
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__P((const DBT *, const DBT *));
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size_t (*prefix) /* prefix function */
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__P((const DBT *, const DBT *));
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int lorder; /* byte order */
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} BTREEINFO;
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#define HASHMAGIC 0x061561
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#define HASHVERSION 2
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/* Structure used to pass parameters to the hashing routines. */
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typedef struct {
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u_int32_t bsize; /* bucket size */
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u_int32_t ffactor; /* fill factor */
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u_int32_t nelem; /* number of elements */
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u_int32_t cachesize; /* bytes to cache */
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u_int32_t /* hash function */
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(*hash) __P((const void *, size_t));
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int lorder; /* byte order */
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} HASHINFO;
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/* Structure used to pass parameters to the record routines. */
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typedef struct {
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#define R_FIXEDLEN 0x01 /* fixed-length records */
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#define R_NOKEY 0x02 /* key not required */
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#define R_SNAPSHOT 0x04 /* snapshot the input */
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u_int32_t flags;
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u_int32_t cachesize; /* bytes to cache */
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u_int32_t psize; /* page size */
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int lorder; /* byte order */
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size_t reclen; /* record length (fixed-length records) */
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u_char bval; /* delimiting byte (variable-length records */
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char *bfname; /* btree file name */
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} RECNOINFO;
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#if defined(__cplusplus)
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extern "C" {
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#endif
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DB *__dbopen __P((const char *, int, int, DBTYPE, const void *));
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DB *dbopen __P((const char *, int, int, DBTYPE, const void *));
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#if defined(__cplusplus)
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}
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#endif
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#endif /* !_DB_185_H_ */
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