1/* Extended cpio format from POSIX.1.
 2   This file is part of the GNU C Library.
 3   Copyright (C) 1992-2025 Free Software Foundation, Inc.
 4   NOTE: The canonical source of this file is maintained with the GNU cpio.
 5
 6   The GNU C Library is free software; you can redistribute it and/or
 7   modify it under the terms of the GNU Lesser General Public
 8   License as published by the Free Software Foundation; either
 9   version 2.1 of the License, or (at your option) any later version.
10
11   The GNU C Library is distributed in the hope that it will be useful,
12   but WITHOUT ANY WARRANTY; without even the implied warranty of
13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14   Lesser General Public License for more details.
15
16   You should have received a copy of the GNU Lesser General Public
17   License along with the GNU C Library; if not, see
18   <https://www.gnu.org/licenses/>.  */
19
20#ifndef _CPIO_H
21#define _CPIO_H 1
22
23/* A cpio archive consists of a sequence of files.
24   Each file has a 76 byte header,
25   a variable length, NUL terminated filename,
26   and variable length file data.
27   A header for a filename "TRAILER!!!" indicates the end of the archive.  */
28
29/* All the fields in the header are ISO 646 (approximately ASCII) strings
30   of octal numbers, left padded, not NUL terminated.
31
32   Field Name	Length in Bytes	Notes
33   c_magic	6		must be "070707"
34   c_dev	6
35   c_ino	6
36   c_mode	6		see below for value
37   c_uid	6
38   c_gid	6
39   c_nlink	6
40   c_rdev	6		only valid for chr and blk special files
41   c_mtime	11
42   c_namesize	6		count includes terminating NUL in pathname
43   c_filesize	11		must be 0 for FIFOs and directories  */
44
45/* Value for the field `c_magic'.  */
46#define MAGIC	"070707"
47
48/* Values for c_mode, OR'd together: */
49
50#define C_IRUSR		000400
51#define C_IWUSR		000200
52#define C_IXUSR		000100
53#define C_IRGRP		000040
54#define C_IWGRP		000020
55#define C_IXGRP		000010
56#define C_IROTH		000004
57#define C_IWOTH		000002
58#define C_IXOTH		000001
59
60#define C_ISUID		004000
61#define C_ISGID		002000
62#define C_ISVTX		001000
63
64#define C_ISBLK		060000
65#define C_ISCHR		020000
66#define C_ISDIR		040000
67#define C_ISFIFO	010000
68#define C_ISSOCK	0140000
69#define C_ISLNK		0120000
70#define C_ISCTG		0110000
71#define C_ISREG		0100000
72
73#endif /* cpio.h */