xref: /illumos-gate/usr/src/lib/krb5/plugins/kdb/db2/libdb2/include/db-int.h (revision 55fea89d)

/*
 * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#ifndef _KRB5_DB2_MISC_H
#define	_KRB5_DB2_MISC_H


#ifdef	__cplusplus
extern "C" {
#endif

/*
 * 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 "db.h"

/* deal with autoconf-based stuff */

#define DB_LITTLE_ENDIAN 1234
#define DB_BIG_ENDIAN 4321

#include <stdlib.h>
#ifdef HAVE_ENDIAN_H
# include <endian.h>
#endif
#ifdef HAVE_MACHINE_ENDIAN_H
# include <machine/endian.h>
#endif
#ifdef HAVE_SYS_PARAM_H
# include <sys/param.h>
#endif

/* SUNW14resync:
   The following code is disabled as it correctly determines the
   endianness of the system. This would break backward compatability
   for x86 as prior to this resync all architectures are treated
   similarily - as big endian. See definition of "WORDS_BIGENDIAN" in
   db-config.h.
*/
#if 0
/* Handle both BIG and LITTLE defined and BYTE_ORDER matches one, or
   just one defined; both with and without leading underscores.

   Ignore "PDP endian" machines, this code doesn't support them
   anyways.  */
#if !defined(LITTLE_ENDIAN) && !defined(BIG_ENDIAN) && !defined(BYTE_ORDER)
# ifdef __LITTLE_ENDIAN__
#  define LITTLE_ENDIAN __LITTLE_ENDIAN__
# endif
# ifdef __BIG_ENDIAN__
#  define BIG_ENDIAN __BIG_ENDIAN__
# endif
#endif
#if !defined(LITTLE_ENDIAN) && !defined(BIG_ENDIAN) && !defined(BYTE_ORDER)
# ifdef _LITTLE_ENDIAN
#  define LITTLE_ENDIAN _LITTLE_ENDIAN
# endif
# ifdef _BIG_ENDIAN
#  define BIG_ENDIAN _BIG_ENDIAN
# endif
# ifdef _BYTE_ORDER
#  define BYTE_ORDER _BYTE_ORDER
# endif
#endif
#if !defined(LITTLE_ENDIAN) && !defined(BIG_ENDIAN) && !defined(BYTE_ORDER)
# ifdef __LITTLE_ENDIAN
#  define LITTLE_ENDIAN __LITTLE_ENDIAN
# endif
# ifdef __BIG_ENDIAN
#  define BIG_ENDIAN __BIG_ENDIAN
# endif
# ifdef __BYTE_ORDER
#  define BYTE_ORDER __BYTE_ORDER
# endif
#endif

#if defined(_MIPSEL) && !defined(LITTLE_ENDIAN)
# define LITTLE_ENDIAN
#endif
#if defined(_MIPSEB) && !defined(BIG_ENDIAN)
# define BIG_ENDIAN
#endif

#if defined(LITTLE_ENDIAN) && defined(BIG_ENDIAN) && defined(BYTE_ORDER)
# if LITTLE_ENDIAN == BYTE_ORDER
#  define DB_BYTE_ORDER DB_LITTLE_ENDIAN
# elif BIG_ENDIAN == BYTE_ORDER
#  define DB_BYTE_ORDER DB_BIG_ENDIAN
# else
#  error "LITTLE_ENDIAN and BIG_ENDIAN defined, but can't determine byte order"
# endif
#elif defined(LITTLE_ENDIAN) && !defined(BIG_ENDIAN)
# define DB_BYTE_ORDER DB_LITTLE_ENDIAN
#elif defined(BIG_ENDIAN) && !defined(LITTLE_ENDIAN)
# define DB_BYTE_ORDER DB_BIG_ENDIAN
#else
# error "can't determine byte order from included system headers"
#endif

#endif


#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_ */

#ifdef	__cplusplus
}
#endif

#endif	/* !_KRB5_DB2_MISC_H */