1ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov/* gzguts.h -- zlib internal header definitions for gz* operations 2ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov * Copyright (C) 2004, 2005, 2010, 2011, 2012, 2013 Mark Adler 3ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov * For conditions of distribution and use, see copyright notice in zlib.h 4ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov */ 5ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 6ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#ifdef _LARGEFILE64_SOURCE 7ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# ifndef _LARGEFILE_SOURCE 8ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# define _LARGEFILE_SOURCE 1 9ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# endif 10ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# ifdef _FILE_OFFSET_BITS 11ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# undef _FILE_OFFSET_BITS 12ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# endif 13ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#endif 14ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 15ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#ifdef HAVE_HIDDEN 16ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# define ZLIB_INTERNAL __attribute__((visibility ("hidden"))) 17ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#else 18ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# define ZLIB_INTERNAL 19ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#endif 20ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 21ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#include <stdio.h> 22ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#include "zlib.h" 23ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#ifdef STDC 24ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# include <string.h> 25ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# include <stdlib.h> 26ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# include <limits.h> 27ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#endif 28ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#include <fcntl.h> 29ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 30ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#ifdef _WIN32 31ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# include <stddef.h> 32ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#else 33ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# include <unistd.h> 34ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#endif 35ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 36ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#if defined(__TURBOC__) || defined(_MSC_VER) || defined(_WIN32) 37ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# include <io.h> 38ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#endif 39ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 40ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#ifdef WINAPI_FAMILY 41ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# define open _open 42ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# define read _read 43ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# define write _write 44ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# define close _close 45ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#endif 46ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 47ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#ifdef NO_DEFLATE /* for compatibility with old definition */ 48ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# define NO_GZCOMPRESS 49ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#endif 50ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 51ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550) 52ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# ifndef HAVE_VSNPRINTF 53ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# define HAVE_VSNPRINTF 54ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# endif 55ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#endif 56ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 57ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#if defined(__CYGWIN__) 58ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# ifndef HAVE_VSNPRINTF 59ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# define HAVE_VSNPRINTF 60ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# endif 61ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#endif 62ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 63ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#if defined(MSDOS) && defined(__BORLANDC__) && (BORLANDC > 0x410) 64ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# ifndef HAVE_VSNPRINTF 65ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# define HAVE_VSNPRINTF 66ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# endif 67ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#endif 68ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 69ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#ifndef HAVE_VSNPRINTF 70ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# ifdef MSDOS 71ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov/* vsnprintf may exist on some MS-DOS compilers (DJGPP?), 72ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov but for now we just assume it doesn't. */ 73ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# define NO_vsnprintf 74ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# endif 75ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# ifdef __TURBOC__ 76ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# define NO_vsnprintf 77ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# endif 78ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# ifdef WIN32 79ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov/* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */ 80ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# if !defined(vsnprintf) && !defined(NO_vsnprintf) 81ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# if !defined(_MSC_VER) || ( defined(_MSC_VER) && _MSC_VER < 1500 ) 82ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# define vsnprintf _vsnprintf 83ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# endif 84ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# endif 85ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# endif 86ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# ifdef __SASC 87ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# define NO_vsnprintf 88ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# endif 89ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# ifdef VMS 90ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# define NO_vsnprintf 91ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# endif 92ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# ifdef __OS400__ 93ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# define NO_vsnprintf 94ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# endif 95ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# ifdef __MVS__ 96ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# define NO_vsnprintf 97ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# endif 98ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#endif 99ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 100ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov/* unlike snprintf (which is required in C99, yet still not supported by 101ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov Microsoft more than a decade later!), _snprintf does not guarantee null 102ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov termination of the result -- however this is only used in gzlib.c where 103ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov the result is assured to fit in the space provided */ 104ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#ifdef _MSC_VER 105ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# define snprintf _snprintf 106ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#endif 107ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 108ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#ifndef local 109ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# define local static 110ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#endif 111ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov/* compile with -Dlocal if your debugger can't find static symbols */ 112ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 113ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov/* gz* functions always use library allocation functions */ 114ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#ifndef STDC 115ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov extern voidp malloc OF((uInt size)); 116ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov extern void free OF((voidpf ptr)); 117ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#endif 118ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 119ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#if defined(_FX_MANAGED_CODE_) && defined(__cplusplus) 120ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovextern "C" { 121ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#endif 122ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 123ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovextern void* FXMEM_DefaultAlloc(size_t, int); 124ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovextern void FXMEM_DefaultFree(void*, int); 125ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 126ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#if defined(_FX_MANAGED_CODE_) && defined(__cplusplus) 127ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 128ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#endif 129ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 130ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#define malloc(size) FXMEM_DefaultAlloc(size, 0) 131ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#define free(ptr) FXMEM_DefaultFree(ptr, 0) 132ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 133ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov/* get errno and strerror definition */ 134ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#if defined UNDER_CE 135ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# include <windows.h> 136ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# define zstrerror() gz_strwinerror((DWORD)GetLastError()) 137ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#else 138ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# ifndef NO_STRERROR 139ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# include <errno.h> 140ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# define zstrerror() strerror(errno) 141ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# else 142ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# define zstrerror() "stdio error (consult errno)" 143ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# endif 144ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#endif 145ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 146ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov/* provide prototypes for these when building zlib without LFS */ 147ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#if !defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0 148ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *)); 149ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov ZEXTERN z_off64_t ZEXPORT gzseek64 OF((gzFile, z_off64_t, int)); 150ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov ZEXTERN z_off64_t ZEXPORT gztell64 OF((gzFile)); 151ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov ZEXTERN z_off64_t ZEXPORT gzoffset64 OF((gzFile)); 152ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#endif 153ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 154ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov/* default memLevel */ 155ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#if MAX_MEM_LEVEL >= 8 156ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# define DEF_MEM_LEVEL 8 157ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#else 158ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# define DEF_MEM_LEVEL MAX_MEM_LEVEL 159ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#endif 160ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 161ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov/* default i/o buffer size -- double this for output when reading (this and 162ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov twice this must be able to fit in an unsigned type) */ 163ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#define GZBUFSIZE 8192 164ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 165ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov/* gzip modes, also provide a little integrity check on the passed structure */ 166ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#define GZ_NONE 0 167ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#define GZ_READ 7247 168ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#define GZ_WRITE 31153 169ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#define GZ_APPEND 1 /* mode set to GZ_WRITE after the file is opened */ 170ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 171ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov/* values for gz_state how */ 172ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#define LOOK 0 /* look for a gzip header */ 173ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#define COPY 1 /* copy input directly */ 174ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#define GZIP 2 /* decompress a gzip stream */ 175ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 176ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov/* internal gzip file state data structure */ 177ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovtypedef struct { 178ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov /* exposed contents for gzgetc() macro */ 179ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov struct gzFile_s x; /* "x" for exposed */ 180ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov /* x.have: number of bytes available at x.next */ 181ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov /* x.next: next output data to deliver or write */ 182ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov /* x.pos: current position in uncompressed data */ 183ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov /* used for both reading and writing */ 184ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int mode; /* see gzip modes above */ 185ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int fd; /* file descriptor */ 186ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov char *path; /* path or fd for error messages */ 187ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov unsigned size; /* buffer size, zero if not allocated yet */ 188ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov unsigned want; /* requested buffer size, default is GZBUFSIZE */ 189ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov unsigned char *in; /* input buffer */ 190ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov unsigned char *out; /* output buffer (double-sized when reading) */ 191ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int direct; /* 0 if processing gzip, 1 if transparent */ 192ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov /* just for reading */ 193ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int how; /* 0: get header, 1: copy, 2: decompress */ 194ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov z_off64_t start; /* where the gzip data started, for rewinding */ 195ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int eof; /* true if end of input file reached */ 196ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int past; /* true if read requested past end */ 197ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov /* just for writing */ 198ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int level; /* compression level */ 199ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int strategy; /* compression strategy */ 200ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov /* seek request */ 201ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov z_off64_t skip; /* amount to skip (already rewound if backwards) */ 202ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int seek; /* true if seek request pending */ 203ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov /* error information */ 204ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int err; /* error code */ 205ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov char *msg; /* error message */ 206ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov /* zlib inflate or deflate stream */ 207ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov z_stream strm; /* stream structure in-place (not a pointer) */ 208ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} gz_state; 209ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovtypedef gz_state FAR *gz_statep; 210ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 211ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov/* shared functions */ 212ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid ZLIB_INTERNAL gz_error OF((gz_statep, int, const char *)); 213ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#if defined UNDER_CE 214ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovchar ZLIB_INTERNAL *gz_strwinerror OF((DWORD error)); 215ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#endif 216ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 217ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov/* GT_OFF(x), where x is an unsigned value, is true if x > maximum z_off64_t 218ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov value -- needed when comparing unsigned to z_off64_t, which is signed 219ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov (possible z_off64_t types off_t, off64_t, and long are all signed) */ 220ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#ifdef INT_MAX 221ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > INT_MAX) 222ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#else 223ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovunsigned ZLIB_INTERNAL gz_intmax OF((void)); 224ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov# define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > gz_intmax()) 225ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#endif 226