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206 lines
6.1 KiB
206 lines
6.1 KiB
/*-
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* Copyright (c) 2003-2007 Tim Kientzle
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD: head/lib/libarchive/archive_platform.h 201090 2009-12-28 02:22:04Z kientzle $
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*/
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/* !!ONLY FOR USE INTERNALLY TO LIBARCHIVE!! */
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/*
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* This header is the first thing included in any of the libarchive
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* source files. As far as possible, platform-specific issues should
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* be dealt with here and not within individual source files. I'm
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* actively trying to minimize #if blocks within the main source,
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* since they obfuscate the code.
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*/
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#ifndef ARCHIVE_PLATFORM_H_INCLUDED
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#define ARCHIVE_PLATFORM_H_INCLUDED
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/* archive.h and archive_entry.h require this. */
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#define __LIBARCHIVE_BUILD 1
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#if defined(PLATFORM_CONFIG_H)
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/* Use hand-built config.h in environments that need it. */
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#include PLATFORM_CONFIG_H
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#elif defined(HAVE_CONFIG_H)
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/* Most POSIX platforms use the 'configure' script to build config.h */
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#include "config.h"
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#else
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/* Warn if the library hasn't been (automatically or manually) configured. */
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#error Oops: No config.h and no pre-built configuration in archive_platform.h.
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#endif
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/* On macOS check for some symbols based on the deployment target version. */
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#if defined(__APPLE__)
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# undef HAVE_FUTIMENS
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# undef HAVE_UTIMENSAT
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# include <AvailabilityMacros.h>
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# if MAC_OS_X_VERSION_MIN_REQUIRED >= 101300
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# define HAVE_FUTIMENS 1
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# define HAVE_UTIMENSAT 1
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# endif
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#endif
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/* It should be possible to get rid of this by extending the feature-test
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* macros to cover Windows API functions, probably along with non-trivial
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* refactoring of code to find structures that sit more cleanly on top of
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* either Windows or Posix APIs. */
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#if (defined(__WIN32__) || defined(_WIN32) || defined(__WIN32)) && !defined(__CYGWIN__)
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#include "archive_windows.h"
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#endif
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/*
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* The config files define a lot of feature macros. The following
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* uses those macros to select/define replacements and include key
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* headers as required.
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*/
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/* Get a real definition for __FBSDID or __RCSID if we can */
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#if HAVE_SYS_CDEFS_H
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#include <sys/cdefs.h>
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#endif
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/* If not, define them so as to avoid dangling semicolons. */
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#ifndef __FBSDID
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#define __FBSDID(a) struct _undefined_hack
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#endif
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#ifndef __RCSID
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#define __RCSID(a) struct _undefined_hack
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#endif
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/* Old glibc mbsnrtowcs fails assertions in our use case. */
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#if defined(__GLIBC__) && __GLIBC__ == 2 && __GLIBC_MINOR__ <= 1
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# undef HAVE_MBSNRTOWCS
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#endif
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/* Try to get standard C99-style integer type definitions. */
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#if HAVE_INTTYPES_H
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#include <inttypes.h>
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#endif
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#if HAVE_STDINT_H
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#include <stdint.h>
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#endif
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/* Borland warns about its own constants! */
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#if defined(__BORLANDC__)
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# if HAVE_DECL_UINT64_MAX
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# undef UINT64_MAX
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# undef HAVE_DECL_UINT64_MAX
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# endif
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# if HAVE_DECL_UINT64_MIN
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# undef UINT64_MIN
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# undef HAVE_DECL_UINT64_MIN
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# endif
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# if HAVE_DECL_INT64_MAX
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# undef INT64_MAX
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# undef HAVE_DECL_INT64_MAX
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# endif
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# if HAVE_DECL_INT64_MIN
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# undef INT64_MIN
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# undef HAVE_DECL_INT64_MIN
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# endif
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#endif
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/* Some platforms lack the standard *_MAX definitions. */
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#if !HAVE_DECL_SIZE_MAX
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#define SIZE_MAX (~(size_t)0)
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#endif
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#if !HAVE_DECL_SSIZE_MAX
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#define SSIZE_MAX ((ssize_t)(SIZE_MAX >> 1))
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#endif
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#if !HAVE_DECL_UINT32_MAX
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#define UINT32_MAX (~(uint32_t)0)
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#endif
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#if !HAVE_DECL_INT32_MAX
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#define INT32_MAX ((int32_t)(UINT32_MAX >> 1))
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#endif
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#if !HAVE_DECL_INT32_MIN
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#define INT32_MIN ((int32_t)(~INT32_MAX))
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#endif
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#if !HAVE_DECL_UINT64_MAX
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#define UINT64_MAX (~(uint64_t)0)
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#endif
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#if !HAVE_DECL_INT64_MAX
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#define INT64_MAX ((int64_t)(UINT64_MAX >> 1))
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#endif
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#if !HAVE_DECL_INT64_MIN
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#define INT64_MIN ((int64_t)(~INT64_MAX))
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#endif
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#if !HAVE_DECL_UINTMAX_MAX
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#define UINTMAX_MAX (~(uintmax_t)0)
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#endif
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#if !HAVE_DECL_INTMAX_MAX
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#define INTMAX_MAX ((intmax_t)(UINTMAX_MAX >> 1))
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#endif
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#if !HAVE_DECL_INTMAX_MIN
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#define INTMAX_MIN ((intmax_t)(~INTMAX_MAX))
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#endif
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/*
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* If we can't restore metadata using a file descriptor, then
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* for compatibility's sake, close files before trying to restore metadata.
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*/
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#if defined(HAVE_FCHMOD) || defined(HAVE_FUTIMES) || defined(HAVE_ACL_SET_FD) || defined(HAVE_ACL_SET_FD_NP) || defined(HAVE_FCHOWN)
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#define CAN_RESTORE_METADATA_FD
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#endif
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/*
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* glibc 2.24 deprecates readdir_r
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*/
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#if defined(HAVE_READDIR_R) && (!defined(__GLIBC__) || !defined(__GLIBC_MINOR__) || __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 24))
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#define USE_READDIR_R 1
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#else
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#undef USE_READDIR_R
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#endif
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/* Set up defaults for internal error codes. */
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#ifndef ARCHIVE_ERRNO_FILE_FORMAT
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#if HAVE_EFTYPE
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#define ARCHIVE_ERRNO_FILE_FORMAT EFTYPE
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#else
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#if HAVE_EILSEQ
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#define ARCHIVE_ERRNO_FILE_FORMAT EILSEQ
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#else
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#define ARCHIVE_ERRNO_FILE_FORMAT EINVAL
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#endif
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#endif
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#endif
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#ifndef ARCHIVE_ERRNO_PROGRAMMER
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#define ARCHIVE_ERRNO_PROGRAMMER EINVAL
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#endif
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#ifndef ARCHIVE_ERRNO_MISC
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#define ARCHIVE_ERRNO_MISC (-1)
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#endif
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#if defined(__GNUC__) && (__GNUC__ >= 7)
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#define __LA_FALLTHROUGH __attribute__((fallthrough))
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#else
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#define __LA_FALLTHROUGH
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#endif
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#endif /* !ARCHIVE_PLATFORM_H_INCLUDED */
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