contrib/libarchive-2.0/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 1.24 2007/01/09 08:05:54 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 #if defined(HAVE_CONFIG_H)
  40 /* Most POSIX platforms use the 'configure' script to build config.h */
  41 #include "../config.h"
  42 #elif defined(__FreeBSD__)
  43 /* Building as part of FreeBSD system requires a pre-built config.h. */
  44 #include "config_freebsd.h"
  45 #elif defined(_WIN32)
  46 /* Win32 can't run the 'configure' script. */
  47 #include "config_windows.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 #define __FBSDID(a)     /* null */
  64 #endif
  65
  66 /* Try to get standard C99-style integer type definitions. */
  67 #if HAVE_INTTYPES_H
  68 #include <inttypes.h>
  69 #elif HAVE_STDINT_H
  70 #include <stdint.h>
  71 #endif
  72
  73 /*
  74  * If this platform has <sys/acl.h>, acl_create(), acl_init(),
  75  * acl_set_file(), and ACL_USER, we assume it has the rest of the
  76  * POSIX.1e draft functions used in archive_read_extract.c.
  77  */
  78 #if HAVE_SYS_ACL_H && HAVE_ACL_CREATE_ENTRY && HAVE_ACL_INIT && HAVE_ACL_SET_FILE && HAVE_ACL_USER
  79 #define HAVE_POSIX_ACL  1
  80 #endif
  81
  82 /*
  83  * If we can't restore metadata using a file descriptor, then
  84  * for compatibility's sake, close files before trying to restore metadata.
  85  */
  86 #if defined(HAVE_FCHMOD) || defined(HAVE_FUTIMES) || defined(HAVE_ACL_SET_FD) || defined(HAVE_ACL_SET_FD_NP) || defined(HAVE_FCHOWN)
  87 #define CAN_RESTORE_METADATA_FD
  88 #endif
  89
  90 /* Set up defaults for internal error codes. */
  91 #ifndef ARCHIVE_ERRNO_FILE_FORMAT
  92 #if HAVE_EFTYPE
  93 #define ARCHIVE_ERRNO_FILE_FORMAT EFTYPE
  94 #else
  95 #if HAVE_EILSEQ
  96 #define ARCHIVE_ERRNO_FILE_FORMAT EILSEQ
  97 #else
  98 #define ARCHIVE_ERRNO_FILE_FORMAT EINVAL
  99 #endif
 100 #endif
 101 #endif
 102
 103 #ifndef ARCHIVE_ERRNO_PROGRAMMER
 104 #define ARCHIVE_ERRNO_PROGRAMMER EINVAL
 105 #endif
 106
 107 #ifndef ARCHIVE_ERRNO_MISC
 108 #define ARCHIVE_ERRNO_MISC (-1)
 109 #endif
 110
 111 /* Select the best way to set/get hi-res timestamps. */
 112 #if HAVE_STRUCT_STAT_ST_MTIMESPEC_TV_NSEC
 113 /* FreeBSD uses "timespec" members. */
 114 #define ARCHIVE_STAT_ATIME_NANOS(st)    (st)->st_atimespec.tv_nsec
 115 #define ARCHIVE_STAT_CTIME_NANOS(st)    (st)->st_ctimespec.tv_nsec
 116 #define ARCHIVE_STAT_MTIME_NANOS(st)    (st)->st_mtimespec.tv_nsec
 117 #define ARCHIVE_STAT_SET_ATIME_NANOS(st, n) (st)->st_atimespec.tv_nsec = (n)
 118 #define ARCHIVE_STAT_SET_CTIME_NANOS(st, n) (st)->st_ctimespec.tv_nsec = (n)
 119 #define ARCHIVE_STAT_SET_MTIME_NANOS(st, n) (st)->st_mtimespec.tv_nsec = (n)
 120 #else
 121 #if HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC
 122 /* Linux uses "tim" members. */
 123 #define ARCHIVE_STAT_ATIME_NANOS(pstat) (pstat)->st_atim.tv_nsec
 124 #define ARCHIVE_STAT_CTIME_NANOS(pstat) (pstat)->st_ctim.tv_nsec
 125 #define ARCHIVE_STAT_MTIME_NANOS(pstat) (pstat)->st_mtim.tv_nsec
 126 #define ARCHIVE_STAT_SET_ATIME_NANOS(st, n) (st)->st_atim.tv_nsec = (n)
 127 #define ARCHIVE_STAT_SET_CTIME_NANOS(st, n) (st)->st_ctim.tv_nsec = (n)
 128 #define ARCHIVE_STAT_SET_MTIME_NANOS(st, n) (st)->st_mtim.tv_nsec = (n)
 129 #else
 130 /* If we can't find a better way, just use stubs. */
 131 #define ARCHIVE_STAT_ATIME_NANOS(pstat) 0
 132 #define ARCHIVE_STAT_CTIME_NANOS(pstat) 0
 133 #define ARCHIVE_STAT_MTIME_NANOS(pstat) 0
 134 #define ARCHIVE_STAT_SET_ATIME_NANOS(st, n) ((void)(n))
 135 #define ARCHIVE_STAT_SET_CTIME_NANOS(st, n) ((void)(n))
 136 #define ARCHIVE_STAT_SET_MTIME_NANOS(st, n) ((void)(n))
 137 #endif
 138 #endif
 139
 140 #endif /* !ARCHIVE_H_INCLUDED */