archive_platform.h revision 348608
1/*- 2 * Copyright (c) 2003-2007 Tim Kientzle 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 17 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT, 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 * 25 * $FreeBSD: stable/10/contrib/libarchive/libarchive/archive_platform.h 348608 2019-06-04 10:36:26Z mm $ 26 */ 27 28/* !!ONLY FOR USE INTERNALLY TO LIBARCHIVE!! */ 29 30/* 31 * This header is the first thing included in any of the libarchive 32 * source files. As far as possible, platform-specific issues should 33 * be dealt with here and not within individual source files. I'm 34 * actively trying to minimize #if blocks within the main source, 35 * since they obfuscate the code. 36 */ 37 38#ifndef ARCHIVE_PLATFORM_H_INCLUDED 39#define ARCHIVE_PLATFORM_H_INCLUDED 40 41/* archive.h and archive_entry.h require this. */ 42#define __LIBARCHIVE_BUILD 1 43 44#if defined(PLATFORM_CONFIG_H) 45/* Use hand-built config.h in environments that need it. */ 46#include PLATFORM_CONFIG_H 47#elif defined(HAVE_CONFIG_H) 48/* Most POSIX platforms use the 'configure' script to build config.h */ 49#include "config.h" 50#else 51/* Warn if the library hasn't been (automatically or manually) configured. */ 52#error Oops: No config.h and no pre-built configuration in archive_platform.h. 53#endif 54 55/* On macOS check for some symbols based on the deployment target version. */ 56#if defined(__APPLE__) 57# undef HAVE_FUTIMENS 58# undef HAVE_UTIMENSAT 59# include <AvailabilityMacros.h> 60# if MAC_OS_X_VERSION_MIN_REQUIRED >= 101300 61# define HAVE_FUTIMENS 1 62# define HAVE_UTIMENSAT 1 63# endif 64#endif 65 66/* It should be possible to get rid of this by extending the feature-test 67 * macros to cover Windows API functions, probably along with non-trivial 68 * refactoring of code to find structures that sit more cleanly on top of 69 * either Windows or Posix APIs. */ 70#if (defined(__WIN32__) || defined(_WIN32) || defined(__WIN32)) && !defined(__CYGWIN__) 71#include "archive_windows.h" 72#else 73#define la_stat(path,stref) stat(path,stref) 74#endif 75 76/* 77 * The config files define a lot of feature macros. The following 78 * uses those macros to select/define replacements and include key 79 * headers as required. 80 */ 81 82/* Get a real definition for __FBSDID or __RCSID if we can */ 83#if HAVE_SYS_CDEFS_H 84#include <sys/cdefs.h> 85#endif 86 87/* If not, define them so as to avoid dangling semicolons. */ 88#ifndef __FBSDID 89#define __FBSDID(a) struct _undefined_hack 90#endif 91#ifndef __RCSID 92#define __RCSID(a) struct _undefined_hack 93#endif 94 95/* Try to get standard C99-style integer type definitions. */ 96#if HAVE_INTTYPES_H 97#include <inttypes.h> 98#endif 99#if HAVE_STDINT_H 100#include <stdint.h> 101#endif 102 103/* Borland warns about its own constants! */ 104#if defined(__BORLANDC__) 105# if HAVE_DECL_UINT64_MAX 106# undef UINT64_MAX 107# undef HAVE_DECL_UINT64_MAX 108# endif 109# if HAVE_DECL_UINT64_MIN 110# undef UINT64_MIN 111# undef HAVE_DECL_UINT64_MIN 112# endif 113# if HAVE_DECL_INT64_MAX 114# undef INT64_MAX 115# undef HAVE_DECL_INT64_MAX 116# endif 117# if HAVE_DECL_INT64_MIN 118# undef INT64_MIN 119# undef HAVE_DECL_INT64_MIN 120# endif 121#endif 122 123/* Some platforms lack the standard *_MAX definitions. */ 124#if !HAVE_DECL_SIZE_MAX 125#define SIZE_MAX (~(size_t)0) 126#endif 127#if !HAVE_DECL_SSIZE_MAX 128#define SSIZE_MAX ((ssize_t)(SIZE_MAX >> 1)) 129#endif 130#if !HAVE_DECL_UINT32_MAX 131#define UINT32_MAX (~(uint32_t)0) 132#endif 133#if !HAVE_DECL_INT32_MAX 134#define INT32_MAX ((int32_t)(UINT32_MAX >> 1)) 135#endif 136#if !HAVE_DECL_INT32_MIN 137#define INT32_MIN ((int32_t)(~INT32_MAX)) 138#endif 139#if !HAVE_DECL_UINT64_MAX 140#define UINT64_MAX (~(uint64_t)0) 141#endif 142#if !HAVE_DECL_INT64_MAX 143#define INT64_MAX ((int64_t)(UINT64_MAX >> 1)) 144#endif 145#if !HAVE_DECL_INT64_MIN 146#define INT64_MIN ((int64_t)(~INT64_MAX)) 147#endif 148#if !HAVE_DECL_UINTMAX_MAX 149#define UINTMAX_MAX (~(uintmax_t)0) 150#endif 151#if !HAVE_DECL_INTMAX_MAX 152#define INTMAX_MAX ((intmax_t)(UINTMAX_MAX >> 1)) 153#endif 154#if !HAVE_DECL_INTMAX_MIN 155#define INTMAX_MIN ((intmax_t)(~INTMAX_MAX)) 156#endif 157 158/* 159 * If we can't restore metadata using a file descriptor, then 160 * for compatibility's sake, close files before trying to restore metadata. 161 */ 162#if defined(HAVE_FCHMOD) || defined(HAVE_FUTIMES) || defined(HAVE_ACL_SET_FD) || defined(HAVE_ACL_SET_FD_NP) || defined(HAVE_FCHOWN) 163#define CAN_RESTORE_METADATA_FD 164#endif 165 166/* 167 * glibc 2.24 deprecates readdir_r 168 */ 169#if defined(HAVE_READDIR_R) && (!defined(__GLIBC__) || !defined(__GLIBC_MINOR__) || __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 24)) 170#define USE_READDIR_R 1 171#else 172#undef USE_READDIR_R 173#endif 174 175/* Set up defaults for internal error codes. */ 176#ifndef ARCHIVE_ERRNO_FILE_FORMAT 177#if HAVE_EFTYPE 178#define ARCHIVE_ERRNO_FILE_FORMAT EFTYPE 179#else 180#if HAVE_EILSEQ 181#define ARCHIVE_ERRNO_FILE_FORMAT EILSEQ 182#else 183#define ARCHIVE_ERRNO_FILE_FORMAT EINVAL 184#endif 185#endif 186#endif 187 188#ifndef ARCHIVE_ERRNO_PROGRAMMER 189#define ARCHIVE_ERRNO_PROGRAMMER EINVAL 190#endif 191 192#ifndef ARCHIVE_ERRNO_MISC 193#define ARCHIVE_ERRNO_MISC (-1) 194#endif 195 196#if defined(__GNUC__) && (__GNUC__ >= 7) 197#define __LA_FALLTHROUGH __attribute__((fallthrough)) 198#else 199#define __LA_FALLTHROUGH 200#endif 201 202#endif /* !ARCHIVE_PLATFORM_H_INCLUDED */ 203