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/*-
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. 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.
*
* @(#)compat.h 8.13 (Berkeley) 2/21/94
*/
#ifndef _DB_INT_H_
#define _DB_INT_H_
#include "config.h"
#include "db.h"
/* deal with autoconf-based stuff */
#define DB_LITTLE_ENDIAN 1234
#define DB_BIG_ENDIAN 4321
#ifdef WORDS_BIGENDIAN
#define DB_BYTE_ORDER DB_BIG_ENDIAN
#else
#define DB_BYTE_ORDER DB_LITTLE_ENDIAN
#endif
/* end autoconf-based stuff */
/* include necessary system header files */
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <limits.h>
#include <fcntl.h>
#include <stdio.h>
#include <errno.h>
#ifdef HAVE_STDINT_H
#include <stdint.h>
#endif
#ifdef HAVE_INTTYPES_H
/* Tru64 5.1: int8_t is defined here, and stdint.h doesn't exist. */
#include <inttypes.h>
#endif
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/param.h>
/* types and constants used for database structure */
#define MAX_PAGE_NUMBER 0xffffffff /* >= # of pages in a file */
typedef u_int32_t db_pgno_t;
#define MAX_PAGE_OFFSET 65535 /* >= # of bytes in a page */
typedef u_int16_t indx_t;
#define MAX_REC_NUMBER 0xffffffff /* >= # of records in a tree */
typedef u_int32_t recno_t;
/*
* Little endian <==> big endian 32-bit swap macros.
* M_32_SWAP swap a memory location
* P_32_SWAP swap a referenced memory location
* P_32_COPY swap from one location to another
*/
#define M_32_SWAP(a) { \
u_int32_t _tmp = a; \
((char *)&a)[0] = ((char *)&_tmp)[3]; \
((char *)&a)[1] = ((char *)&_tmp)[2]; \
((char *)&a)[2] = ((char *)&_tmp)[1]; \
((char *)&a)[3] = ((char *)&_tmp)[0]; \
}
#define P_32_SWAP(a) { \
u_int32_t _tmp = *(u_int32_t *)a; \
((char *)a)[0] = ((char *)&_tmp)[3]; \
((char *)a)[1] = ((char *)&_tmp)[2]; \
((char *)a)[2] = ((char *)&_tmp)[1]; \
((char *)a)[3] = ((char *)&_tmp)[0]; \
}
#define P_32_COPY(a, b) { \
((char *)&(b))[0] = ((char *)&(a))[3]; \
((char *)&(b))[1] = ((char *)&(a))[2]; \
((char *)&(b))[2] = ((char *)&(a))[1]; \
((char *)&(b))[3] = ((char *)&(a))[0]; \
}
/*
* Little endian <==> big endian 16-bit swap macros.
* M_16_SWAP swap a memory location
* P_16_SWAP swap a referenced memory location
* P_16_COPY swap from one location to another
*/
#define M_16_SWAP(a) { \
u_int16_t _tmp = a; \
((char *)&a)[0] = ((char *)&_tmp)[1]; \
((char *)&a)[1] = ((char *)&_tmp)[0]; \
}
#define P_16_SWAP(a) { \
u_int16_t _tmp = *(u_int16_t *)a; \
((char *)a)[0] = ((char *)&_tmp)[1]; \
((char *)a)[1] = ((char *)&_tmp)[0]; \
}
#define P_16_COPY(a, b) { \
((char *)&(b))[0] = ((char *)&(a))[1]; \
((char *)&(b))[1] = ((char *)&(a))[0]; \
}
/* open functions for each database type, used in dbopen() */
#define __bt_open __kdb2_bt_open
#define __hash_open __kdb2_hash_open
#define __rec_open __kdb2_rec_open
#define __dbpanic __kdb2_dbpanic
DB *__bt_open __P((const char *, int, int, const BTREEINFO *, int));
DB *__hash_open __P((const char *, int, int, const HASHINFO *, int));
DB *__rec_open __P((const char *, int, int, const RECNOINFO *, int));
void __dbpanic __P((DB *dbp));
/*
* There is no portable way to figure out the maximum value of a file
* offset, so we put it here.
*/
#ifdef OFF_T_MAX
#define DB_OFF_T_MAX OFF_T_MAX
#else
#define DB_OFF_T_MAX LONG_MAX
#endif
#ifndef O_ACCMODE /* POSIX 1003.1 access mode mask. */
#define O_ACCMODE (O_RDONLY|O_WRONLY|O_RDWR)
#endif
/*
* If you can't provide lock values in the open(2) call. Note, this
* allows races to happen.
*/
#ifndef O_EXLOCK /* 4.4BSD extension. */
#define O_EXLOCK 0
#endif
#ifndef O_SHLOCK /* 4.4BSD extension. */
#define O_SHLOCK 0
#endif
#ifndef EFTYPE
#define EFTYPE EINVAL /* POSIX 1003.1 format errno. */
#endif
#ifndef STDERR_FILENO
#define STDIN_FILENO 0 /* ANSI C #defines */
#define STDOUT_FILENO 1
#define STDERR_FILENO 2
#endif
#ifndef SEEK_END
#define SEEK_SET 0 /* POSIX 1003.1 seek values */
#define SEEK_CUR 1
#define SEEK_END 2
#endif
#ifndef NULL /* ANSI C #defines NULL everywhere. */
#define NULL 0
#endif
#ifndef MAX /* Usually found in <sys/param.h>. */
#define MAX(_a,_b) ((_a)<(_b)?(_b):(_a))
#endif
#ifndef MIN /* Usually found in <sys/param.h>. */
#define MIN(_a,_b) ((_a)<(_b)?(_a):(_b))
#endif
#ifndef S_ISDIR /* POSIX 1003.1 file type tests. */
#define S_ISDIR(m) ((m & 0170000) == 0040000) /* directory */
#define S_ISCHR(m) ((m & 0170000) == 0020000) /* char special */
#define S_ISBLK(m) ((m & 0170000) == 0060000) /* block special */
#define S_ISREG(m) ((m & 0170000) == 0100000) /* regular file */
#define S_ISFIFO(m) ((m & 0170000) == 0010000) /* fifo */
#endif
#ifndef S_ISLNK /* BSD POSIX 1003.1 extensions */
#define S_ISLNK(m) ((m & 0170000) == 0120000) /* symbolic link */
#define S_ISSOCK(m) ((m & 0170000) == 0140000) /* socket */
#endif
#ifndef O_BINARY
#define O_BINARY 0 /* Needed for Win32 compiles */
#endif
#endif /* _DB_INT_H_ */
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