xref: /PHP-8.3/ext/fileinfo/libmagic/tar.h (revision 411e97c7)
1 /*
2  * Copyright (c) Ian F. Darwin 1986-1995.
3  * Software written by Ian F. Darwin and others;
4  * maintained 1995-present by Christos Zoulas and others.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice immediately at the beginning of the file, without modification,
11  *    this list of conditions, and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
20  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26  * SUCH DAMAGE.
27  */
28 /*
29  * Header file for public domain tar (tape archive) program.
30  *
31  * @(#)tar.h 1.20 86/10/29	Public Domain.
32  *
33  * Created 25 August 1985 by John Gilmore, ihnp4!hoptoad!gnu.
34  *
35  * $File: tar.h,v 1.13 2010/11/30 14:58:53 rrt Exp $ # checkin only
36  */
37 
38 /*
39  * Header block on tape.
40  *
41  * I'm going to use traditional DP naming conventions here.
42  * A "block" is a big chunk of stuff that we do I/O on.
43  * A "record" is a piece of info that we care about.
44  * Typically many "record"s fit into a "block".
45  */
46 #define	RECORDSIZE	512
47 #define	NAMSIZ	100
48 #define	TUNMLEN	32
49 #define	TGNMLEN	32
50 
51 union record {
52 	unsigned char	charptr[RECORDSIZE];
53 	struct header {
54 		char	name[NAMSIZ];
55 		char	mode[8];
56 		char	uid[8];
57 		char	gid[8];
58 		char	size[12];
59 		char	mtime[12];
60 		char	chksum[8];
61 		char	linkflag;
62 		char	linkname[NAMSIZ];
63 		char	magic[8];
64 		char	uname[TUNMLEN];
65 		char	gname[TGNMLEN];
66 		char	devmajor[8];
67 		char	devminor[8];
68 	} header;
69 };
70 
71 /* The magic field is filled with this if uname and gname are valid. */
72 #define	TMAGIC		"ustar"		/* 5 chars and a null */
73 #define	GNUTMAGIC	"ustar  "	/* 7 chars and a null */
74