xref: /freebsd/contrib/libarchive/tar/bsdtar_platform.h (revision 7fdf597e96a02165cfe22ff357b857d5fa15ed8a)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
3  *
4  * Copyright (c) 2003-2007 Tim Kientzle
5  * All rights reserved.
6  */
7 
8 /*
9  * This header is the first thing included in any of the bsdtar
10  * source files.  As far as possible, platform-specific issues should
11  * be dealt with here and not within individual source files.
12  */
13 
14 #ifndef BSDTAR_PLATFORM_H_INCLUDED
15 #define	BSDTAR_PLATFORM_H_INCLUDED
16 
17 #if defined(PLATFORM_CONFIG_H)
18 /* Use hand-built config.h in environments that need it. */
19 #include PLATFORM_CONFIG_H
20 #else
21 /* Not having a config.h of some sort is a serious problem. */
22 #include "config.h"
23 #endif
24 
25 #if defined(_WIN32) && !defined(__CYGWIN__)
26 #include "bsdtar_windows.h"
27 #endif
28 
29 #ifdef HAVE_LIBARCHIVE
30 /* If we're using the platform libarchive, include system headers. */
31 #include <archive.h>
32 #include <archive_entry.h>
33 #else
34 /* Otherwise, include user headers. */
35 #include "archive.h"
36 #include "archive_entry.h"
37 #endif
38 
39 #ifdef HAVE_LIBACL
40 #include <acl/libacl.h>
41 #endif
42 
43 /*
44  * Include "dirent.h" (or its equivalent on several different platforms).
45  *
46  * This is slightly modified from the GNU autoconf recipe.
47  * In particular, FreeBSD includes d_namlen in its dirent structure,
48  * so my configure script includes an explicit test for the d_namlen
49  * field.
50  */
51 #if HAVE_DIRENT_H
52 # include <dirent.h>
53 # if HAVE_DIRENT_D_NAMLEN
54 #  define DIRENT_NAMLEN(dirent) (dirent)->d_namlen
55 # else
56 #  define DIRENT_NAMLEN(dirent) strlen((dirent)->d_name)
57 # endif
58 #else
59 # define dirent direct
60 # define DIRENT_NAMLEN(dirent) (dirent)->d_namlen
61 # if HAVE_SYS_NDIR_H
62 #  include <sys/ndir.h>
63 # endif
64 # if HAVE_SYS_DIR_H
65 #  include <sys/dir.h>
66 # endif
67 # if HAVE_NDIR_H
68 #  include <ndir.h>
69 # endif
70 #endif
71 
72 #if HAVE_STRUCT_STAT_ST_MTIMESPEC_TV_NSEC
73 #define	ARCHIVE_STAT_CTIME_NANOS(st)	(st)->st_ctimespec.tv_nsec
74 #define	ARCHIVE_STAT_MTIME_NANOS(st)	(st)->st_mtimespec.tv_nsec
75 #elif HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC
76 #define	ARCHIVE_STAT_CTIME_NANOS(st)	(st)->st_ctim.tv_nsec
77 #define	ARCHIVE_STAT_MTIME_NANOS(st)	(st)->st_mtim.tv_nsec
78 #elif HAVE_STRUCT_STAT_ST_MTIME_N
79 #define	ARCHIVE_STAT_CTIME_NANOS(st)	(st)->st_ctime_n
80 #define	ARCHIVE_STAT_MTIME_NANOS(st)	(st)->st_mtime_n
81 #elif HAVE_STRUCT_STAT_ST_UMTIME
82 #define	ARCHIVE_STAT_CTIME_NANOS(st)	(st)->st_uctime * 1000
83 #define	ARCHIVE_STAT_MTIME_NANOS(st)	(st)->st_umtime * 1000
84 #elif HAVE_STRUCT_STAT_ST_MTIME_USEC
85 #define	ARCHIVE_STAT_CTIME_NANOS(st)	(st)->st_ctime_usec * 1000
86 #define	ARCHIVE_STAT_MTIME_NANOS(st)	(st)->st_mtime_usec * 1000
87 #else
88 #define	ARCHIVE_STAT_CTIME_NANOS(st)	(0)
89 #define	ARCHIVE_STAT_MTIME_NANOS(st)	(0)
90 #endif
91 
92 /* How to mark functions that don't return. */
93 /* This facilitates use of some newer static code analysis tools. */
94 #undef __LA_NORETURN
95 #if defined(__GNUC__) && (__GNUC__ > 2 || \
96                           (__GNUC__ == 2 && __GNUC_MINOR__ >= 5))
97 #define __LA_NORETURN       __attribute__((__noreturn__))
98 #elif defined(_MSC_VER)
99 #define __LA_NORETURN __declspec(noreturn)
100 #else
101 #define __LA_NORETURN
102 #endif
103 
104 #endif /* !BSDTAR_PLATFORM_H_INCLUDED */
105