2 * Copyright (c) 2003-2007 Tim Kientzle
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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.
28 /* !!ONLY FOR USE INTERNALLY TO LIBARCHIVE!! */
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.
38 #ifndef ARCHIVE_PLATFORM_H_INCLUDED
39 #define ARCHIVE_PLATFORM_H_INCLUDED
41 /* archive.h and archive_entry.h require this. */
42 #define __LIBARCHIVE_BUILD 1
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 */
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.
55 /* On macOS check for some symbols based on the deployment target version. */
56 #if defined(__APPLE__)
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
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"
75 * The config files define a lot of feature macros. The following
76 * uses those macros to select/define replacements and include key
77 * headers as required.
80 /* Get a real definition for __FBSDID or __RCSID if we can */
82 #include <sys/cdefs.h>
85 /* If not, define them so as to avoid dangling semicolons. */
87 #define __FBSDID(a) struct _undefined_hack
90 #define __RCSID(a) struct _undefined_hack
93 /* Try to get standard C99-style integer type definitions. */
101 /* Borland warns about its own constants! */
102 #if defined(__BORLANDC__)
103 # if HAVE_DECL_UINT64_MAX
105 # undef HAVE_DECL_UINT64_MAX
107 # if HAVE_DECL_UINT64_MIN
109 # undef HAVE_DECL_UINT64_MIN
111 # if HAVE_DECL_INT64_MAX
113 # undef HAVE_DECL_INT64_MAX
115 # if HAVE_DECL_INT64_MIN
117 # undef HAVE_DECL_INT64_MIN
121 /* Some platforms lack the standard *_MAX definitions. */
122 #if !HAVE_DECL_SIZE_MAX
123 #define SIZE_MAX (~(size_t)0)
125 #if !HAVE_DECL_SSIZE_MAX
126 #define SSIZE_MAX ((ssize_t)(SIZE_MAX >> 1))
128 #if !HAVE_DECL_UINT32_MAX
129 #define UINT32_MAX (~(uint32_t)0)
131 #if !HAVE_DECL_INT32_MAX
132 #define INT32_MAX ((int32_t)(UINT32_MAX >> 1))
134 #if !HAVE_DECL_INT32_MIN
135 #define INT32_MIN ((int32_t)(~INT32_MAX))
137 #if !HAVE_DECL_UINT64_MAX
138 #define UINT64_MAX (~(uint64_t)0)
140 #if !HAVE_DECL_INT64_MAX
141 #define INT64_MAX ((int64_t)(UINT64_MAX >> 1))
143 #if !HAVE_DECL_INT64_MIN
144 #define INT64_MIN ((int64_t)(~INT64_MAX))
146 #if !HAVE_DECL_UINTMAX_MAX
147 #define UINTMAX_MAX (~(uintmax_t)0)
149 #if !HAVE_DECL_INTMAX_MAX
150 #define INTMAX_MAX ((intmax_t)(UINTMAX_MAX >> 1))
152 #if !HAVE_DECL_INTMAX_MIN
153 #define INTMAX_MIN ((intmax_t)(~INTMAX_MAX))
157 * If we can't restore metadata using a file descriptor, then
158 * for compatibility's sake, close files before trying to restore metadata.
160 #if defined(HAVE_FCHMOD) || defined(HAVE_FUTIMES) || defined(HAVE_ACL_SET_FD) || defined(HAVE_ACL_SET_FD_NP) || defined(HAVE_FCHOWN)
161 #define CAN_RESTORE_METADATA_FD
165 * glibc 2.24 deprecates readdir_r
167 #if defined(HAVE_READDIR_R) && (!defined(__GLIBC__) || !defined(__GLIBC_MINOR__) || __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 24))
168 #define USE_READDIR_R 1
173 /* Set up defaults for internal error codes. */
174 #ifndef ARCHIVE_ERRNO_FILE_FORMAT
176 #define ARCHIVE_ERRNO_FILE_FORMAT EFTYPE
179 #define ARCHIVE_ERRNO_FILE_FORMAT EILSEQ
181 #define ARCHIVE_ERRNO_FILE_FORMAT EINVAL
186 #ifndef ARCHIVE_ERRNO_PROGRAMMER
187 #define ARCHIVE_ERRNO_PROGRAMMER EINVAL
190 #ifndef ARCHIVE_ERRNO_MISC
191 #define ARCHIVE_ERRNO_MISC (-1)
194 #if defined(__GNUC__) && (__GNUC__ >= 7)
195 #define __LA_FALLTHROUGH __attribute__((fallthrough))
197 #define __LA_FALLTHROUGH
200 #endif /* !ARCHIVE_PLATFORM_H_INCLUDED */