misc/ar.h

   1 /* Header describing `ar' archive file format.
   2    Copyright (C) 1996-2017 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library 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 GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #ifndef _AR_H
  20 #define _AR_H 1
  21
  22 #include <sys/cdefs.h>
  23
  24 /* Archive files start with the ARMAG identifying string.  Then follows a
  25    `struct ar_hdr', and as many bytes of member file data as its `ar_size'
  26    member indicates, for each member file.  */
  27
  28 #define ARMAG   "!<arch>\n"     /* String that begins an archive file.  */
  29 #define SARMAG  8               /* Size of that string.  */
  30
  31 #define ARFMAG  "`\n"           /* String in ar_fmag at end of each header.  */
  32
  33 __BEGIN_DECLS
  34
  35 struct ar_hdr
  36   {
  37     char ar_name[16];           /* Member file name, sometimes / terminated. */
  38     char ar_date[12];           /* File date, decimal seconds since Epoch.  */
  39     char ar_uid[6], ar_gid[6];  /* User and group IDs, in ASCII decimal.  */
  40     char ar_mode[8];            /* File mode, in ASCII octal.  */
  41     char ar_size[10];           /* File size, in ASCII decimal.  */
  42     char ar_fmag[2];            /* Always contains ARFMAG.  */
  43   };
  44
  45 __END_DECLS
  46
  47 #endif /* ar.h */