contrib/libarchive/libarchive/archive_platform.h

   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: src/lib/libarchive/archive_platform.h,v 1.32 2008/12/06 05:53:05 kientzle Exp $
  26  */
  27
  28 /*
  29  * This header is the first thing included in any of the libarchive
  30  * source files.  As far as possible, platform-specific issues should
  31  * be dealt with here and not within individual source files.  I'm
  32  * actively trying to minimize #if blocks within the main source,
  33  * since they obfuscate the code.
  34  */
  35
  36 #ifndef ARCHIVE_PLATFORM_H_INCLUDED
  37 #define ARCHIVE_PLATFORM_H_INCLUDED
  38
  39 /* archive.h and archive_entry.h require this. */
  40 #define __LIBARCHIVE_BUILD 1
  41
  42 #if defined(PLATFORM_CONFIG_H)
  43 /* Use hand-built config.h in environments that need it. */
  44 #include PLATFORM_CONFIG_H
  45 #elif defined(HAVE_CONFIG_H)
  46 /* Most POSIX platforms use the 'configure' script to build config.h */
  47 #include "config.h"
  48 #else
  49 /* Warn if the library hasn't been (automatically or manually) configured. */
  50 #error Oops: No config.h and no pre-built configuration in archive_platform.h.
  51 #endif
  52
  53 /*
  54  * The config files define a lot of feature macros.  The following
  55  * uses those macros to select/define replacements and include key
  56  * headers as required.
  57  */
  58
  59 /* No non-FreeBSD platform will have __FBSDID, so just define it here. */
  60 #ifdef __FreeBSD__
  61 #include <sys/cdefs.h>  /* For __FBSDID */
  62 #else
  63 /* Just leaving this macro replacement empty leads to a dangling semicolon. */
  64 #define __FBSDID(a)     struct _undefined_hack
  65 #endif
  66
  67 /* Try to get standard C99-style integer type definitions. */
  68 #if HAVE_INTTYPES_H
  69 #include <inttypes.h>
  70 #endif
  71 #if HAVE_STDINT_H
  72 #include <stdint.h>
  73 #endif
  74
  75 /* Some platforms lack the standard *_MAX definitions. */
  76 #if !HAVE_DECL_SIZE_MAX
  77 #define SIZE_MAX (~(size_t)0)
  78 #endif
  79 #if !HAVE_DECL_SSIZE_MAX
  80 #define SSIZE_MAX ((ssize_t)(SIZE_MAX >> 1))
  81 #endif
  82 #if !HAVE_DECL_UINT32_MAX
  83 #define UINT32_MAX (~(uint32_t)0)
  84 #endif
  85 #if !HAVE_DECL_UINT64_MAX
  86 #define UINT64_MAX (~(uint64_t)0)
  87 #endif
  88 #if !HAVE_DECL_INT64_MAX
  89 #define INT64_MAX ((int64_t)(UINT64_MAX >> 1))
  90 #endif
  91 #if !HAVE_DECL_INT64_MIN
  92 #define INT64_MIN ((int64_t)(~INT64_MAX))
  93 #endif
  94
  95 /*
  96  * If this platform has <sys/acl.h>, acl_create(), acl_init(),
  97  * acl_set_file(), and ACL_USER, we assume it has the rest of the
  98  * POSIX.1e draft functions used in archive_read_extract.c.
  99  */
 100 #if HAVE_SYS_ACL_H && HAVE_ACL_CREATE_ENTRY && HAVE_ACL_INIT && HAVE_ACL_SET_FILE && HAVE_ACL_USER
 101 #define HAVE_POSIX_ACL  1
 102 #endif
 103
 104 /*
 105  * If we can't restore metadata using a file descriptor, then
 106  * for compatibility's sake, close files before trying to restore metadata.
 107  */
 108 #if defined(HAVE_FCHMOD) || defined(HAVE_FUTIMES) || defined(HAVE_ACL_SET_FD) || defined(HAVE_ACL_SET_FD_NP) || defined(HAVE_FCHOWN)
 109 #define CAN_RESTORE_METADATA_FD
 110 #endif
 111
 112 /* Set up defaults for internal error codes. */
 113 #ifndef ARCHIVE_ERRNO_FILE_FORMAT
 114 #if HAVE_EFTYPE
 115 #define ARCHIVE_ERRNO_FILE_FORMAT EFTYPE
 116 #else
 117 #if HAVE_EILSEQ
 118 #define ARCHIVE_ERRNO_FILE_FORMAT EILSEQ
 119 #else
 120 #define ARCHIVE_ERRNO_FILE_FORMAT EINVAL
 121 #endif
 122 #endif
 123 #endif
 124
 125 #ifndef ARCHIVE_ERRNO_PROGRAMMER
 126 #define ARCHIVE_ERRNO_PROGRAMMER EINVAL
 127 #endif
 128
 129 #ifndef ARCHIVE_ERRNO_MISC
 130 #define ARCHIVE_ERRNO_MISC (-1)
 131 #endif
 132
 133 #endif /* !ARCHIVE_PLATFORM_H_INCLUDED */