1 /* $OpenBSD: zutil.h,v 1.18 2011/07/07 02:57:24 deraadt Exp $ */ 2 /* zutil.h -- internal interface and configuration of the compression library 3 * Copyright (C) 1995-2005 Jean-loup Gailly. 4 * For conditions of distribution and use, see copyright notice in zlib.h 5 */ 6 7 /* WARNING: this file should *not* be used by applications. It is 8 part of the implementation of the compression library and is 9 subject to change. Applications should only use zlib.h. 10 */ 11 12 13 #ifndef ZUTIL_H 14 #define ZUTIL_H 15 16 #define ZLIB_INTERNAL 17 #include "zlib.h" 18 19 #ifdef _KERNEL 20 #include <sys/param.h> 21 #include <sys/systm.h> 22 #define MY_ZCALLOC 23 #else 24 25 #ifdef _STANDALONE 26 #include <lib/libsa/stand.h> 27 #else 28 #ifdef STDC 29 # ifndef _WIN32_WCE 30 # include <stddef.h> 31 # endif 32 # include <string.h> 33 # include <stdlib.h> 34 #endif 35 #ifdef NO_ERRNO_H 36 # ifdef _WIN32_WCE 37 /* The Microsoft C Run-Time Library for Windows CE doesn't have 38 * errno. We define it as a global variable to simplify porting. 39 * Its value is always 0 and should not be used. We rename it to 40 * avoid conflict with other libraries that use the same workaround. 41 */ 42 # define errno z_errno 43 # endif 44 extern int errno; 45 #else 46 # ifndef _WIN32_WCE 47 # include <errno.h> 48 # endif 49 #endif 50 #endif 51 52 #endif 53 54 #ifndef local 55 # define local static 56 #endif 57 /* compile with -Dlocal if your debugger can't find static symbols */ 58 59 typedef unsigned char uch; 60 typedef uch FAR uchf; 61 typedef unsigned short ush; 62 typedef ush FAR ushf; 63 typedef unsigned long ulg; 64 65 extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */ 66 /* (size given to avoid silly warnings with Visual C++) */ 67 68 #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)] 69 70 #define ERR_RETURN(strm,err) \ 71 return (strm->msg = (char*)ERR_MSG(err), (err)) 72 /* To be used only when the state is known to be valid */ 73 74 /* common constants */ 75 76 #ifndef DEF_WBITS 77 # define DEF_WBITS MAX_WBITS 78 #endif 79 /* default windowBits for decompression. MAX_WBITS is for compression only */ 80 81 #if MAX_MEM_LEVEL >= 8 82 # define DEF_MEM_LEVEL 8 83 #else 84 # define DEF_MEM_LEVEL MAX_MEM_LEVEL 85 #endif 86 /* default memLevel */ 87 88 #define STORED_BLOCK 0 89 #define STATIC_TREES 1 90 #define DYN_TREES 2 91 /* The three kinds of block type */ 92 93 #define MIN_MATCH 3 94 #define MAX_MATCH 258 95 /* The minimum and maximum match lengths */ 96 97 #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ 98 99 /* target dependencies */ 100 101 #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32)) 102 # define OS_CODE 0x00 103 # if defined(__TURBOC__) || defined(__BORLANDC__) 104 # if(__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__)) 105 /* Allow compilation with ANSI keywords only enabled */ 106 void _Cdecl farfree( void *block ); 107 void *_Cdecl farmalloc( unsigned long nbytes ); 108 # else 109 # include <alloc.h> 110 # endif 111 # else /* MSC or DJGPP */ 112 # include <malloc.h> 113 # endif 114 #endif 115 116 #ifdef AMIGA 117 # define OS_CODE 0x01 118 #endif 119 120 #if defined(VAXC) || defined(VMS) 121 # define OS_CODE 0x02 122 # define F_OPEN(name, mode) \ 123 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") 124 #endif 125 126 #if defined(ATARI) || defined(atarist) 127 # define OS_CODE 0x05 128 #endif 129 130 #ifdef OS2 131 # define OS_CODE 0x06 132 # ifdef M_I86 133 #include <malloc.h> 134 # endif 135 #endif 136 137 #if defined(MACOS) || defined(TARGET_OS_MAC) 138 # define OS_CODE 0x07 139 # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os 140 # include <unix.h> /* for fdopen */ 141 # else 142 # ifndef fdopen 143 # define fdopen(fd,mode) NULL /* No fdopen() */ 144 # endif 145 # endif 146 #endif 147 148 #ifdef TOPS20 149 # define OS_CODE 0x0a 150 #endif 151 152 #ifdef WIN32 153 # ifndef __CYGWIN__ /* Cygwin is Unix, not Win32 */ 154 # define OS_CODE 0x0b 155 # endif 156 #endif 157 158 #ifdef __50SERIES /* Prime/PRIMOS */ 159 # define OS_CODE 0x0f 160 #endif 161 162 #if defined(_BEOS_) || defined(RISCOS) 163 # define fdopen(fd,mode) NULL /* No fdopen() */ 164 #endif 165 166 #if (defined(_MSC_VER) && (_MSC_VER > 600)) 167 # if defined(_WIN32_WCE) 168 # define fdopen(fd,mode) NULL /* No fdopen() */ 169 # ifndef _PTRDIFF_T_DEFINED 170 typedef int ptrdiff_t; 171 # define _PTRDIFF_T_DEFINED 172 # endif 173 # else 174 # define fdopen(fd,type) _fdopen(fd,type) 175 # endif 176 #endif 177 178 /* common defaults */ 179 180 #ifndef OS_CODE 181 # define OS_CODE 0x03 /* assume Unix */ 182 #endif 183 184 #ifndef F_OPEN 185 # define F_OPEN(name, mode) fopen((name), (mode)) 186 #endif 187 188 /* functions */ 189 190 #if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550) 191 # ifndef HAVE_VSNPRINTF 192 # define HAVE_VSNPRINTF 193 # endif 194 #endif 195 #if defined(__CYGWIN__) 196 # ifndef HAVE_VSNPRINTF 197 # define HAVE_VSNPRINTF 198 # endif 199 #endif 200 #ifndef HAVE_VSNPRINTF 201 # ifdef MSDOS 202 /* vsnprintf may exist on some MS-DOS compilers (DJGPP?), 203 but for now we just assume it doesn't. */ 204 # define NO_vsnprintf 205 # endif 206 # ifdef __TURBOC__ 207 # define NO_vsnprintf 208 # endif 209 # ifdef WIN32 210 /* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */ 211 # if !defined(vsnprintf) && !defined(NO_vsnprintf) 212 # define vsnprintf _vsnprintf 213 # endif 214 # endif 215 # ifdef __SASC 216 # define NO_vsnprintf 217 # endif 218 #endif 219 #ifdef VMS 220 # define NO_vsnprintf 221 #endif 222 223 #if defined(pyr) 224 # define NO_MEMCPY 225 #endif 226 #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__) 227 /* Use our own functions for small and medium model with MSC <= 5.0. 228 * You may have to use the same strategy for Borland C (untested). 229 * The __SC__ check is for Symantec. 230 */ 231 # define NO_MEMCPY 232 #endif 233 #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY) 234 # define HAVE_MEMCPY 235 #endif 236 #ifdef HAVE_MEMCPY 237 # ifdef SMALL_MEDIUM /* MSDOS small or medium model */ 238 # define zmemcpy _fmemcpy 239 # define zmemcmp _fmemcmp 240 # define zmemzero(dest, len) _fmemset(dest, 0, len) 241 # else 242 # define zmemcpy memcpy 243 # define zmemcmp memcmp 244 # define zmemzero(dest, len) memset(dest, 0, len) 245 # endif 246 #else 247 extern void zmemcpy OF((Bytef* dest, const Bytef* source, uInt len)); 248 extern int zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len)); 249 extern void zmemzero OF((Bytef* dest, uInt len)); 250 #endif 251 252 /* Diagnostic functions */ 253 #ifdef DEBUG_LIBZ 254 # include <stdio.h> 255 extern int z_verbose; 256 extern void z_error OF((char *m)); 257 # define Assert(cond,msg) {if(!(cond)) z_error(msg);} 258 # define Trace(x) {if (z_verbose>=0) fprintf x ;} 259 # define Tracev(x) {if (z_verbose>0) fprintf x ;} 260 # define Tracevv(x) {if (z_verbose>1) fprintf x ;} 261 # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;} 262 # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;} 263 #else 264 # define Assert(cond,msg) 265 # define Trace(x) 266 # define Tracev(x) 267 # define Tracevv(x) 268 # define Tracec(c,x) 269 # define Tracecv(c,x) 270 #endif 271 272 273 voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size)); 274 void zcfree OF((voidpf opaque, voidpf ptr)); 275 276 #define ZALLOC(strm, items, size) \ 277 (*((strm)->zalloc))((strm)->opaque, (items), (size)) 278 #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr)) 279 #define TRY_FREE(s, p) {if (p) ZFREE(s, p);} 280 281 #endif /* ZUTIL_H */ 282