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: head/lib/libarchive/archive_platform.h 201090 2009-12-28 02:22:04Z kientzle $ 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