/*- * 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 #include #ifdef HAVE_ENDIAN_H # include #endif #ifdef HAVE_MACHINE_ENDIAN_H # include #endif #ifdef HAVE_SYS_PARAM_H # include #endif /* 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 #if 0 #ifdef WORDS_BIGENDIAN #define DB_BYTE_ORDER DB_BIG_ENDIAN #else #define DB_BYTE_ORDER DB_LITTLE_ENDIAN #endif #endif /* end autoconf-based stuff */ /* include necessary system header files */ #ifdef HAVE_UNISTD_H #include #endif #include #include #include #include #ifdef HAVE_STDINT_H #include #endif #ifdef HAVE_INTTYPES_H /* Tru64 5.1: int8_t is defined here, and stdint.h doesn't exist. */ #include #endif #include #include #include /* 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 . */ #define MAX(_a,_b) ((_a)<(_b)?(_b):(_a)) #endif #ifndef MIN /* Usually found in . */ #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_ */