1 /* archive file definition for GNU software
2 
3    Copyright (C) 2001-2016 Free Software Foundation, Inc.
4 
5    This program is free software; you can redistribute it and/or modify
6    it under the terms of the GNU General Public License as published by
7    the Free Software Foundation; either version 3 of the License, or
8    (at your option) any later version.
9 
10    This program is distributed in the hope that it will be useful,
11    but WITHOUT ANY WARRANTY; without even the implied warranty of
12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13    GNU General Public License for more details.
14 
15    You should have received a copy of the GNU General Public License
16    along with this program; if not, write to the Free Software
17    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
18    MA 02110-1301, USA.  */
19 
20 /* So far this is correct for BSDish archives.  Don't forget that
21    files must begin on an even byte boundary. */
22 
23 #ifndef __GNU_AR_H__
24 #define __GNU_AR_H__
25 
26 /* Note that the usual '\n' in magic strings may translate to different
27    characters, as allowed by ANSI.  '\012' has a fixed value, and remains
28    compatible with existing BSDish archives. */
29 
30 #define ARMAG  "!<arch>\012"	/* For COFF and a.out archives.  */
31 #define ARMAGB "!<bout>\012"	/* For b.out archives.  */
32 #define ARMAGT "!<thin>\012"	/* For thin archives.  */
33 #define SARMAG 8
34 #define ARFMAG "`\012"
35 
36 /* The ar_date field of the armap (__.SYMDEF) member of an archive
37    must be greater than the modified date of the entire file, or
38    BSD-derived linkers complain.  We originally write the ar_date with
39    this offset from the real file's mod-time.  After finishing the
40    file, we rewrite ar_date if it's not still greater than the mod date.  */
41 
42 #define ARMAP_TIME_OFFSET       60
43 
44 struct ar_hdr
45 {
46   char ar_name[16];		/* Name of this member.  */
47   char ar_date[12];		/* File mtime.  */
48   char ar_uid[6];		/* Owner uid; printed as decimal.  */
49   char ar_gid[6];		/* Owner gid; printed as decimal.  */
50   char ar_mode[8];		/* File mode, printed as octal.   */
51   char ar_size[10];		/* File size, printed as decimal.  */
52   char ar_fmag[2];		/* Should contain ARFMAG.  */
53 };
54 
55 #endif /* __GNU_AR_H__ */
56