external/bsd/file/dist/src/tar.h

   1 /*      $NetBSD: tar.h,v 1.1.1.2 2011/05/12 20:46:54 christos Exp $     */
   2
   3 /*
   4  * Copyright (c) Ian F. Darwin 1986-1995.
   5  * Software written by Ian F. Darwin and others;
   6  * maintained 1995-present by Christos Zoulas and others.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice immediately at the beginning of the file, without modification,
  13  *    this list of conditions, and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  21  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
  22  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  28  * SUCH DAMAGE.
  29  */
  30 /*
  31  * Header file for public domain tar (tape archive) program.
  32  *
  33  * @(#)tar.h 1.20 86/10/29      Public Domain.
  34  *
  35  * Created 25 August 1985 by John Gilmore, ihnp4!hoptoad!gnu.
  36  *
  37  * $File: tar.h,v 1.13 2010/11/30 14:58:53 rrt Exp $ # checkin only
  38  */
  39
  40 /*
  41  * Header block on tape.
  42  *
  43  * I'm going to use traditional DP naming conventions here.
  44  * A "block" is a big chunk of stuff that we do I/O on.
  45  * A "record" is a piece of info that we care about.
  46  * Typically many "record"s fit into a "block".
  47  */
  48 #define RECORDSIZE      512
  49 #define NAMSIZ  100
  50 #define TUNMLEN 32
  51 #define TGNMLEN 32
  52
  53 union record {
  54         unsigned char   charptr[RECORDSIZE];
  55         struct header {
  56                 char    name[NAMSIZ];
  57                 char    mode[8];
  58                 char    uid[8];
  59                 char    gid[8];
  60                 char    size[12];
  61                 char    mtime[12];
  62                 char    chksum[8];
  63                 char    linkflag;
  64                 char    linkname[NAMSIZ];
  65                 char    magic[8];
  66                 char    uname[TUNMLEN];
  67                 char    gname[TGNMLEN];
  68                 char    devmajor[8];
  69                 char    devminor[8];
  70         } header;
  71 };
  72
  73 /* The magic field is filled with this if uname and gname are valid. */
  74 #define TMAGIC          "ustar"         /* 5 chars and a null */
  75 #define GNUTMAGIC       "ustar  "       /* 7 chars and a null */