1 /* $OpenBSD: zutil.h,v 1.22 2021/07/22 16:40:20 tb Exp $ */ 2 3 /* zutil.h -- internal interface and configuration of the compression library 4 * Copyright (C) 1995-2016 Jean-loup Gailly, Mark Adler 5 * For conditions of distribution and use, see copyright notice in zlib.h 6 */ 7 8 /* WARNING: this file should *not* be used by applications. It is 9 part of the implementation of the compression library and is 10 subject to change. Applications should only use zlib.h. 11 */ 12 13 #ifndef ZUTIL_H 14 #define ZUTIL_H 15 16 #ifdef HAVE_HIDDEN 17 # define ZLIB_INTERNAL __attribute__((visibility ("hidden"))) 18 #else 19 # define ZLIB_INTERNAL 20 #endif 21 22 #include "zlib.h" 23 24 #ifdef _KERNEL 25 #include <sys/param.h> 26 #include <sys/systm.h> 27 28 #define MY_ZCALLOC 29 #define NOBYFOUR 30 31 typedef long ptrdiff_t; 32 #else 33 #ifdef _STANDALONE 34 #include <lib/libsa/stand.h> 35 #else 36 #if defined(STDC) && !defined(Z_SOLO) 37 # if !(defined(_WIN32_WCE) && defined(_MSC_VER)) 38 # include <stddef.h> 39 # endif 40 # include <string.h> 41 # include <stdlib.h> 42 #endif 43 #endif 44 #endif 45 46 #ifdef Z_SOLO 47 typedef long ptrdiff_t; /* guess -- will be caught if guess is wrong */ 48 #endif 49 50 #ifndef local 51 # define local static 52 #endif 53 /* since "static" is used to mean two completely different things in C, we 54 define "local" for the non-static meaning of "static", for readability 55 (compile with -Dlocal if your debugger can't find static symbols) */ 56 57 typedef unsigned char uch; 58 typedef uch FAR uchf; 59 typedef unsigned short ush; 60 typedef ush FAR ushf; 61 typedef unsigned long ulg; 62 63 extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */ 64 /* (size given to avoid silly warnings with Visual C++) */ 65 66 #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)] 67 68 #define ERR_RETURN(strm,err) \ 69 return (strm->msg = ERR_MSG(err), (err)) 70 /* To be used only when the state is known to be valid */ 71 72 /* common constants */ 73 74 #ifndef DEF_WBITS 75 # define DEF_WBITS MAX_WBITS 76 #endif 77 /* default windowBits for decompression. MAX_WBITS is for compression only */ 78 79 #if MAX_MEM_LEVEL >= 8 80 # define DEF_MEM_LEVEL 8 81 #else 82 # define DEF_MEM_LEVEL MAX_MEM_LEVEL 83 #endif 84 /* default memLevel */ 85 86 #define STORED_BLOCK 0 87 #define STATIC_TREES 1 88 #define DYN_TREES 2 89 /* The three kinds of block type */ 90 91 #define MIN_MATCH 3 92 #define MAX_MATCH 258 93 /* The minimum and maximum match lengths */ 94 95 #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ 96 97 /* target dependencies */ 98 99 #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32)) 100 # define OS_CODE 0x00 101 # ifndef Z_SOLO 102 # if defined(__TURBOC__) || defined(__BORLANDC__) 103 # if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__)) 104 /* Allow compilation with ANSI keywords only enabled */ 105 void _Cdecl farfree( void *block ); 106 void *_Cdecl farmalloc( unsigned long nbytes ); 107 # else 108 # include <alloc.h> 109 # endif 110 # else /* MSC or DJGPP */ 111 # include <malloc.h> 112 # endif 113 # endif 114 #endif 115 116 #ifdef AMIGA 117 # define OS_CODE 1 118 #endif 119 120 #if defined(VAXC) || defined(VMS) 121 # define OS_CODE 2 122 # define F_OPEN(name, mode) \ 123 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") 124 #endif 125 126 #ifdef __370__ 127 # if __TARGET_LIB__ < 0x20000000 128 # define OS_CODE 4 129 # elif __TARGET_LIB__ < 0x40000000 130 # define OS_CODE 11 131 # else 132 # define OS_CODE 8 133 # endif 134 #endif 135 136 #if defined(ATARI) || defined(atarist) 137 # define OS_CODE 5 138 #endif 139 140 #ifdef OS2 141 # define OS_CODE 6 142 # if defined(M_I86) && !defined(Z_SOLO) 143 # include <malloc.h> 144 # endif 145 #endif 146 147 #if defined(MACOS) || defined(TARGET_OS_MAC) 148 # define OS_CODE 7 149 # ifndef Z_SOLO 150 # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os 151 # include <unix.h> /* for fdopen */ 152 # else 153 # ifndef fdopen 154 # define fdopen(fd,mode) NULL /* No fdopen() */ 155 # endif 156 # endif 157 # endif 158 #endif 159 160 #ifdef __acorn 161 # define OS_CODE 13 162 #endif 163 164 #if defined(WIN32) && !defined(__CYGWIN__) 165 # define OS_CODE 10 166 #endif 167 168 #ifdef _BEOS_ 169 # define OS_CODE 16 170 #endif 171 172 #ifdef __TOS_OS400__ 173 # define OS_CODE 18 174 #endif 175 176 #ifdef __APPLE__ 177 # define OS_CODE 19 178 #endif 179 180 #if defined(_BEOS_) || defined(RISCOS) 181 # define fdopen(fd,mode) NULL /* No fdopen() */ 182 #endif 183 184 #if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX 185 # if defined(_WIN32_WCE) 186 # define fdopen(fd,mode) NULL /* No fdopen() */ 187 # ifndef _PTRDIFF_T_DEFINED 188 typedef int ptrdiff_t; 189 # define _PTRDIFF_T_DEFINED 190 # endif 191 # else 192 # define fdopen(fd,type) _fdopen(fd,type) 193 # endif 194 #endif 195 196 #if defined(__BORLANDC__) && !defined(MSDOS) 197 #pragma warn -8004 198 #pragma warn -8008 199 #pragma warn -8066 200 #endif 201 202 /* provide prototypes for these when building zlib without LFS */ 203 #if !defined(_WIN32) && \ 204 (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0) 205 ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t)); 206 ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t)); 207 #endif 208 209 /* common defaults */ 210 211 #ifndef OS_CODE 212 # define OS_CODE 3 /* assume Unix */ 213 #endif 214 215 #ifndef F_OPEN 216 # define F_OPEN(name, mode) fopen((name), (mode)) 217 #endif 218 219 /* functions */ 220 221 #if defined(pyr) || defined(Z_SOLO) 222 # define NO_MEMCPY 223 #endif 224 #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__) 225 /* Use our own functions for small and medium model with MSC <= 5.0. 226 * You may have to use the same strategy for Borland C (untested). 227 * The __SC__ check is for Symantec. 228 */ 229 # define NO_MEMCPY 230 #endif 231 #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY) 232 # define HAVE_MEMCPY 233 #endif 234 #ifdef HAVE_MEMCPY 235 # ifdef SMALL_MEDIUM /* MSDOS small or medium model */ 236 # define zmemcpy _fmemcpy 237 # define zmemcmp _fmemcmp 238 # define zmemzero(dest, len) _fmemset(dest, 0, len) 239 # else 240 # define zmemcpy memcpy 241 # define zmemcmp memcmp 242 # define zmemzero(dest, len) memset(dest, 0, len) 243 # endif 244 #else 245 void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len)); 246 int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len)); 247 void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len)); 248 #endif 249 250 /* Diagnostic functions */ 251 #ifdef ZLIB_DEBUG 252 # include <stdio.h> 253 extern int ZLIB_INTERNAL z_verbose; 254 extern void ZLIB_INTERNAL z_error OF((char *m)); 255 # define Assert(cond,msg) {if(!(cond)) z_error(msg);} 256 # define Trace(x) {if (z_verbose>=0) fprintf x ;} 257 # define Tracev(x) {if (z_verbose>0) fprintf x ;} 258 # define Tracevv(x) {if (z_verbose>1) fprintf x ;} 259 # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;} 260 # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;} 261 #else 262 # define Assert(cond,msg) 263 # define Trace(x) 264 # define Tracev(x) 265 # define Tracevv(x) 266 # define Tracec(c,x) 267 # define Tracecv(c,x) 268 #endif 269 270 #ifndef Z_SOLO 271 voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items, 272 unsigned size)); 273 void ZLIB_INTERNAL zcfree OF((voidpf opaque, voidpf ptr, unsigned size)); 274 #endif 275 276 #define ZALLOC(strm, items, size) \ 277 (*((strm)->zalloc))((strm)->opaque, (items), (size)) 278 #define ZFREE(strm, addr, size) \ 279 (*((strm)->zfree))((strm)->opaque, (voidpf)(addr), (size)) 280 #define TRY_FREE(s, p, size) ZFREE(s, p, size) 281 282 /* Reverse the bytes in a 32-bit value */ 283 #define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \ 284 (((q) & 0xff00) << 8) + (((q) & 0xff) << 24)) 285 286 #endif /* ZUTIL_H */ 287