include/aout/ar.h

   1 /* archive file definition for GNU software
   2
   3    Copyright (C) 2001-2021 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 ARMAGT "!<thin>\012"    /* For thin archives.  */
  32 #define SARMAG 8
  33 #define ARFMAG "`\012"
  34
  35 /* The ar_date field of the armap (__.SYMDEF) member of an archive
  36    must be greater than the modified date of the entire file, or
  37    BSD-derived linkers complain.  We originally write the ar_date with
  38    this offset from the real file's mod-time.  After finishing the
  39    file, we rewrite ar_date if it's not still greater than the mod date.  */
  40
  41 #define ARMAP_TIME_OFFSET       60
  42
  43 struct ar_hdr
  44 {
  45   char ar_name[16];             /* Name of this member.  */
  46   char ar_date[12];             /* File mtime.  */
  47   char ar_uid[6];               /* Owner uid; printed as decimal.  */
  48   char ar_gid[6];               /* Owner gid; printed as decimal.  */
  49   char ar_mode[8];              /* File mode, printed as octal.   */
  50   char ar_size[10];             /* File size, printed as decimal.  */
  51   char ar_fmag[2];              /* Should contain ARFMAG.  */
  52 };
  53
  54 #endif /* __GNU_AR_H__ */