/*- * Copyright (c) 1990, 1993, 1994 * 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. * * @(#)db.h 8.7 (Berkeley) 6/16/94 */ #ifndef _DB_H_ #define _DB_H_ #include <sys/types.h> #include <sys/stat.h> #include <limits.h> #if defined(__cplusplus) #define __BEGIN_DECLS extern "C" { #define __END_DECLS }; #else #define __BEGIN_DECLS #define __END_DECLS #endif #define __P(protos) protos /* full-blown ANSI C */ #ifndef MAXPATHLEN #include <io.h> #ifdef MAXPATH #define MAXPATHLEN MAXPATH #else #define MAXPATHLEN 260 #endif #endif #define NSIG 23 /* highest defined signal no. + 1 */ /* * If your system doesn't typedef u_long, u_short, or u_char, change * the 0 to a 1. */ #if 1 typedef unsigned char u_char; /* 4.[34]BSD names. */ typedef unsigned int u_int; typedef unsigned long u_long; typedef unsigned short u_short; #endif /* * If your system doesn't have an include file with the appropriate * byte order set, make sure you specify the correct one. */ #ifndef BYTE_ORDER #define LITTLE_ENDIAN 1234 /* LSB first: i386, vax */ #define BIG_ENDIAN 4321 /* MSB first: 68000, ibm, net */ #define BYTE_ORDER BIG_ENDIAN /* Set for your system. */ #endif /* * 32-bit machine. The db routines are theoretically independent of * the size of u_shorts and u_longs, but I don't know that anyone has * ever actually tried it. At a minimum, change the following #define's * if you are trying to compile on a different type of system. */ #ifndef USHRT_MAX #define USHRT_MAX 0xFFFF #define ULONG_MAX 0xFFFFFFFF #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 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 __BIT_TYPES_DEFINED__ #define __BIT_TYPES_DEFINED__ typedef signed char int8_t; typedef unsigned char u_int8_t; typedef short int16_t; typedef unsigned short u_int16_t; typedef int int32_t; typedef unsigned int u_int32_t; #endif #define MAX_PAGE_NUMBER 0xffffffff /* >= # of pages in a file */ typedef u_int32_t 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; /* Key/data structure -- a Data-Base Thang. */ typedef struct { void *data; /* data */ size_t size; /* data length */ } DBT; /* Routine flags. */ #define R_CURSOR 1 /* del, put, seq */ #define __R_UNUSED 2 /* UNUSED */ #define R_FIRST 3 /* seq */ #define R_NEXT 7 /* seq */ #define R_NOOVERWRITE 8 /* put */ typedef enum { DB_BTREE, DB_HASH, DB_RECNO } DBTYPE; /* Access method description structure. */ typedef struct __db { DBTYPE type; /* Underlying db type. */ int (*close) __P((struct __db *)); int (*del) __P((const struct __db *, const DBT *, u_int)); int (*get) __P((const struct __db *, const DBT *, DBT *, u_int)); int (*put) __P((const struct __db *, DBT *, const DBT *, u_int)); int (*seq) __P((const struct __db *, DBT *, DBT *, u_int)); int (*sync) __P((const struct __db *, u_int)); void *internal; /* Access method private. */ int (*fd) __P((const struct __db *)); } DB; #define HASHMAGIC 0x061561 #define HASHVERSION 2 /* Structure used to pass parameters to the hashing routines. */ typedef struct { u_int bsize; /* bucket size */ u_int ffactor; /* fill factor */ u_int nelem; /* number of elements */ u_int cachesize; /* bytes to cache */ u_int32_t /* hash function */ (*hash) __P((const void *, size_t)); int lorder; /* byte order */ } HASHINFO; /* * 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]; \ } __BEGIN_DECLS DB *__hash_open __P((const char *, int, int, const HASHINFO *, int)); __END_DECLS #endif /* !_DB_H_ */