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 /* The C library on Windows specifies a calling convention for callback 73 * functions and exports; when we interact with them (capture pointers, 74 * call and pass function pointers) we need to match their calling 75 * convention. 76 * This only matters when libarchive is built with /Gr, /Gz or /Gv 77 * (which change the default calling convention.) */ 78 #define __LA_LIBC_CC __cdecl 79 #else 80 #define la_stat(path,stref) stat(path,stref) 81 #define __LA_LIBC_CC 82 #endif 83 84 /* 85 * The config files define a lot of feature macros. The following 86 * uses those macros to select/define replacements and include key 87 * headers as required. 88 */ 89 90 /* Get a real definition for __FBSDID or __RCSID if we can */ 91 #if HAVE_SYS_CDEFS_H 92 #include <sys/cdefs.h> 93 #endif 94 95 /* If not, define them so as to avoid dangling semicolons. */ 96 #ifndef __FBSDID 97 #define __FBSDID(a) struct _undefined_hack 98 #endif 99 #ifndef __RCSID 100 #define __RCSID(a) struct _undefined_hack 101 #endif 102 103 /* Try to get standard C99-style integer type definitions. */ 104 #if HAVE_INTTYPES_H 105 #include <inttypes.h> 106 #endif 107 #if HAVE_STDINT_H 108 #include <stdint.h> 109 #endif 110 111 /* Borland warns about its own constants! */ 112 #if defined(__BORLANDC__) 113 # if HAVE_DECL_UINT64_MAX 114 # undef UINT64_MAX 115 # undef HAVE_DECL_UINT64_MAX 116 # endif 117 # if HAVE_DECL_UINT64_MIN 118 # undef UINT64_MIN 119 # undef HAVE_DECL_UINT64_MIN 120 # endif 121 # if HAVE_DECL_INT64_MAX 122 # undef INT64_MAX 123 # undef HAVE_DECL_INT64_MAX 124 # endif 125 # if HAVE_DECL_INT64_MIN 126 # undef INT64_MIN 127 # undef HAVE_DECL_INT64_MIN 128 # endif 129 #endif 130 131 /* Some platforms lack the standard *_MAX definitions. */ 132 #if !HAVE_DECL_SIZE_MAX 133 #define SIZE_MAX (~(size_t)0) 134 #endif 135 #if !HAVE_DECL_SSIZE_MAX 136 #define SSIZE_MAX ((ssize_t)(SIZE_MAX >> 1)) 137 #endif 138 #if !HAVE_DECL_UINT32_MAX 139 #define UINT32_MAX (~(uint32_t)0) 140 #endif 141 #if !HAVE_DECL_INT32_MAX 142 #define INT32_MAX ((int32_t)(UINT32_MAX >> 1)) 143 #endif 144 #if !HAVE_DECL_INT32_MIN 145 #define INT32_MIN ((int32_t)(~INT32_MAX)) 146 #endif 147 #if !HAVE_DECL_UINT64_MAX 148 #define UINT64_MAX (~(uint64_t)0) 149 #endif 150 #if !HAVE_DECL_INT64_MAX 151 #define INT64_MAX ((int64_t)(UINT64_MAX >> 1)) 152 #endif 153 #if !HAVE_DECL_INT64_MIN 154 #define INT64_MIN ((int64_t)(~INT64_MAX)) 155 #endif 156 #if !HAVE_DECL_UINTMAX_MAX 157 #define UINTMAX_MAX (~(uintmax_t)0) 158 #endif 159 #if !HAVE_DECL_INTMAX_MAX 160 #define INTMAX_MAX ((intmax_t)(UINTMAX_MAX >> 1)) 161 #endif 162 #if !HAVE_DECL_INTMAX_MIN 163 #define INTMAX_MIN ((intmax_t)(~INTMAX_MAX)) 164 #endif 165 166 /* Some platforms lack the standard PRIxN/PRIdN definitions. */ 167 #if !HAVE_INTTYPES_H || !defined(PRIx32) || !defined(PRId32) 168 #ifndef PRIx32 169 #if SIZEOF_INT == 4 170 #define PRIx32 "x" 171 #elif SIZEOF_LONG == 4 172 #define PRIx32 "lx" 173 #else 174 #error No suitable 32-bit unsigned integer type found for this platform 175 #endif 176 #endif // PRIx32 177 #ifndef PRId32 178 #if SIZEOF_INT == 4 179 #define PRId32 "d" 180 #elif SIZEOF_LONG == 4 181 #define PRId32 "ld" 182 #else 183 #error No suitable 32-bit signed integer type found for this platform 184 #endif 185 #endif // PRId32 186 #endif // !HAVE_INTTYPES_H || !defined(PRIx32) || !defined(PRId32) 187 188 /* 189 * If we can't restore metadata using a file descriptor, then 190 * for compatibility's sake, close files before trying to restore metadata. 191 */ 192 #if defined(HAVE_FCHMOD) || defined(HAVE_FUTIMES) || defined(HAVE_ACL_SET_FD) || defined(HAVE_ACL_SET_FD_NP) || defined(HAVE_FCHOWN) 193 #define CAN_RESTORE_METADATA_FD 194 #endif 195 196 /* 197 * glibc 2.24 deprecates readdir_r 198 */ 199 #if defined(HAVE_READDIR_R) && (!defined(__GLIBC__) || !defined(__GLIBC_MINOR__) || __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 24)) 200 #define USE_READDIR_R 1 201 #else 202 #undef USE_READDIR_R 203 #endif 204 205 /* Set up defaults for internal error codes. */ 206 #ifndef ARCHIVE_ERRNO_FILE_FORMAT 207 #if HAVE_EFTYPE 208 #define ARCHIVE_ERRNO_FILE_FORMAT EFTYPE 209 #else 210 #if HAVE_EILSEQ 211 #define ARCHIVE_ERRNO_FILE_FORMAT EILSEQ 212 #else 213 #define ARCHIVE_ERRNO_FILE_FORMAT EINVAL 214 #endif 215 #endif 216 #endif 217 218 #ifndef ARCHIVE_ERRNO_PROGRAMMER 219 #define ARCHIVE_ERRNO_PROGRAMMER EINVAL 220 #endif 221 222 #ifndef ARCHIVE_ERRNO_MISC 223 #define ARCHIVE_ERRNO_MISC (-1) 224 #endif 225 226 #if defined(__GNUC__) && (__GNUC__ >= 7) 227 #define __LA_FALLTHROUGH __attribute__((fallthrough)) 228 #else 229 #define __LA_FALLTHROUGH 230 #endif 231 232 #endif /* !ARCHIVE_PLATFORM_H_INCLUDED */ 233