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/usr.bin/tar/bsdtar_platform.h,v 1.26 2008/12/06 07:37:14 kientzle Exp $
26  */
27 
28 /*
29  * This header is the first thing included in any of the bsdtar
30  * source files.  As far as possible, platform-specific issues should
31  * be dealt with here and not within individual source files.
32  */
33 
34 #ifndef BSDTAR_PLATFORM_H_INCLUDED
35 #define	BSDTAR_PLATFORM_H_INCLUDED
36 
37 #if defined(PLATFORM_CONFIG_H)
38 /* Use hand-built config.h in environments that need it. */
39 #include PLATFORM_CONFIG_H
40 #else
41 /* Not having a config.h of some sort is a serious problem. */
42 #include "config.h"
43 #endif
44 
45 #if defined(_WIN32) && !defined(__CYGWIN__)
46 #include "bsdtar_windows.h"
47 #endif
48 
49 /* Get a real definition for __FBSDID if we can */
50 #if HAVE_SYS_CDEFS_H
51 #include <sys/cdefs.h>
52 #endif
53 
54 /* If not, define it so as to avoid dangling semicolons. */
55 #ifndef __FBSDID
56 #define	__FBSDID(a)     struct _undefined_hack
57 #endif
58 
59 #ifdef HAVE_LIBARCHIVE
60 /* If we're using the platform libarchive, include system headers. */
61 #include <archive.h>
62 #include <archive_entry.h>
63 #else
64 /* Otherwise, include user headers. */
65 #include "archive.h"
66 #include "archive_entry.h"
67 #endif
68 
69 #ifdef HAVE_LIBACL
70 #include <acl/libacl.h>
71 #endif
72 
73 /*
74  * Include "dirent.h" (or its equivalent on several different platforms).
75  *
76  * This is slightly modified from the GNU autoconf recipe.
77  * In particular, FreeBSD includes d_namlen in its dirent structure,
78  * so my configure script includes an explicit test for the d_namlen
79  * field.
80  */
81 #if HAVE_DIRENT_H
82 # include <dirent.h>
83 # if HAVE_DIRENT_D_NAMLEN
84 #  define DIRENT_NAMLEN(dirent) (dirent)->d_namlen
85 # else
86 #  define DIRENT_NAMLEN(dirent) strlen((dirent)->d_name)
87 # endif
88 #else
89 # define dirent direct
90 # define DIRENT_NAMLEN(dirent) (dirent)->d_namlen
91 # if HAVE_SYS_NDIR_H
92 #  include <sys/ndir.h>
93 # endif
94 # if HAVE_SYS_DIR_H
95 #  include <sys/dir.h>
96 # endif
97 # if HAVE_NDIR_H
98 #  include <ndir.h>
99 # endif
100 #endif
101 
102 #if HAVE_STRUCT_STAT_ST_MTIMESPEC_TV_NSEC
103 #define	ARCHIVE_STAT_CTIME_NANOS(st)	(st)->st_ctimespec.tv_nsec
104 #define	ARCHIVE_STAT_MTIME_NANOS(st)	(st)->st_mtimespec.tv_nsec
105 #elif HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC
106 #define	ARCHIVE_STAT_CTIME_NANOS(st)	(st)->st_ctim.tv_nsec
107 #define	ARCHIVE_STAT_MTIME_NANOS(st)	(st)->st_mtim.tv_nsec
108 #elif HAVE_STRUCT_STAT_ST_MTIME_N
109 #define	ARCHIVE_STAT_CTIME_NANOS(st)	(st)->st_ctime_n
110 #define	ARCHIVE_STAT_MTIME_NANOS(st)	(st)->st_mtime_n
111 #elif HAVE_STRUCT_STAT_ST_UMTIME
112 #define	ARCHIVE_STAT_CTIME_NANOS(st)	(st)->st_uctime * 1000
113 #define	ARCHIVE_STAT_MTIME_NANOS(st)	(st)->st_umtime * 1000
114 #elif HAVE_STRUCT_STAT_ST_MTIME_USEC
115 #define	ARCHIVE_STAT_CTIME_NANOS(st)	(st)->st_ctime_usec * 1000
116 #define	ARCHIVE_STAT_MTIME_NANOS(st)	(st)->st_mtime_usec * 1000
117 #else
118 #define	ARCHIVE_STAT_CTIME_NANOS(st)	(0)
119 #define	ARCHIVE_STAT_MTIME_NANOS(st)	(0)
120 #endif
121 
122 /* How to mark functions that don't return. */
123 /* This facilitates use of some newer static code analysis tools. */
124 #undef __LA_DEAD
125 #if defined(__GNUC__) && (__GNUC__ > 2 || \
126 			  (__GNUC__ == 2 && __GNUC_MINOR__ >= 5))
127 #define	__LA_DEAD	__attribute__((__noreturn__))
128 #else
129 #define	__LA_DEAD
130 #endif
131 
132 #endif /* !BSDTAR_PLATFORM_H_INCLUDED */
133