1/* $OpenBSD: tar.h,v 1.9 2014/01/08 06:43:34 deraadt Exp $ */ 2/* $NetBSD: tar.h,v 1.3 1995/03/21 09:07:51 cgd Exp $ */ 3 4/*- 5 * Copyright (c) 1992 Keith Muller. 6 * Copyright (c) 1992, 1993 7 * The Regents of the University of California. All rights reserved. 8 * 9 * This code is derived from software contributed to Berkeley by 10 * Keith Muller of the University of California, San Diego. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * @(#)tar.h 8.2 (Berkeley) 4/18/94 37 */ 38 39/* 40 * defines and data structures common to all tar formats 41 */ 42#define CHK_LEN 8 /* length of checksum field */ 43#define TNMSZ 100 /* size of name field */ 44#ifdef _PAX_ 45#define NULLCNT 2 /* number of null blocks in trailer */ 46#define CHK_OFFSET 148 /* start of chksum field */ 47#define BLNKSUM 256L /* sum of checksum field using ' ' */ 48#endif /* _PAX_ */ 49 50/* 51 * Values used in typeflag field in all tar formats 52 * (only REGTYPE, LNKTYPE and SYMTYPE are used in old bsd tar headers) 53 */ 54#define REGTYPE '0' /* Regular File */ 55#define AREGTYPE '\0' /* Regular File */ 56#define LNKTYPE '1' /* Link */ 57#define SYMTYPE '2' /* Symlink */ 58#define CHRTYPE '3' /* Character Special File */ 59#define BLKTYPE '4' /* Block Special File */ 60#define DIRTYPE '5' /* Directory */ 61#define FIFOTYPE '6' /* FIFO */ 62#define CONTTYPE '7' /* high perf file */ 63 64/* 65 * Extended header - POSIX.1-2001 66 */ 67#define XHDRTYPE 'x' /* Extended header */ 68#define GHDRTYPE 'g' /* Global header*/ 69 70/* 71 * GNU tar compatibility; 72 */ 73#define LONGLINKTYPE 'K' /* Long Symlink */ 74#define LONGNAMETYPE 'L' /* Long File */ 75 76/* 77 * Mode field encoding of the different file types - values in octal 78 */ 79#define TSUID 04000 /* Set UID on execution */ 80#define TSGID 02000 /* Set GID on execution */ 81#define TSVTX 01000 /* Reserved */ 82#define TUREAD 00400 /* Read by owner */ 83#define TUWRITE 00200 /* Write by owner */ 84#define TUEXEC 00100 /* Execute/Search by owner */ 85#define TGREAD 00040 /* Read by group */ 86#define TGWRITE 00020 /* Write by group */ 87#define TGEXEC 00010 /* Execute/Search by group */ 88#define TOREAD 00004 /* Read by other */ 89#define TOWRITE 00002 /* Write by other */ 90#define TOEXEC 00001 /* Execute/Search by other */ 91 92#ifdef _PAX_ 93/* 94 * Pad with a bit mask, much faster than doing a mod but only works on powers 95 * of 2. Macro below is for block of 512 bytes. 96 */ 97#define TAR_PAD(x) ((512 - ((x) & 511)) & 511) 98#endif /* _PAX_ */ 99 100/* 101 * structure of an old tar header as it appeared in BSD releases 102 */ 103typedef struct { 104 char name[TNMSZ]; /* name of entry */ 105 char mode[8]; /* mode */ 106 char uid[8]; /* uid */ 107 char gid[8]; /* gid */ 108 char size[12]; /* size */ 109 char mtime[12]; /* modification time */ 110 char chksum[CHK_LEN]; /* checksum */ 111 char linkflag; /* norm, hard, or sym. */ 112 char linkname[TNMSZ]; /* linked to name */ 113} HD_TAR; 114 115#ifdef _PAX_ 116/* 117 * -o options for BSD tar to not write directories to the archive 118 */ 119#define TAR_NODIR "nodir" 120#define TAR_OPTION "write_opt" 121 122/* 123 * default device names 124 */ 125#define DEV_0 "/dev/rst0" 126#define DEV_1 "/dev/rst1" 127#define DEV_4 "/dev/rst4" 128#define DEV_5 "/dev/rst5" 129#define DEV_7 "/dev/rst7" 130#define DEV_8 "/dev/rst8" 131#endif /* _PAX_ */ 132 133/* 134 * Data Interchange Format - Extended tar header format - POSIX 1003.1-1990 135 */ 136#define TPFSZ 155 137#define TMAGIC "ustar" /* ustar and a null */ 138#define TMAGLEN 6 139#define TVERSION "00" /* 00 and no null */ 140#define TVERSLEN 2 141 142typedef struct { 143 char name[TNMSZ]; /* name of entry */ 144 char mode[8]; /* mode */ 145 char uid[8]; /* uid */ 146 char gid[8]; /* gid */ 147 char size[12]; /* size */ 148 char mtime[12]; /* modification time */ 149 char chksum[CHK_LEN]; /* checksum */ 150 char typeflag; /* type of file. */ 151 char linkname[TNMSZ]; /* linked to name */ 152 char magic[TMAGLEN]; /* magic cookie */ 153 char version[TVERSLEN]; /* version */ 154 char uname[32]; /* ascii owner name */ 155 char gname[32]; /* ascii group name */ 156 char devmajor[8]; /* major device number */ 157 char devminor[8]; /* minor device number */ 158 char prefix[TPFSZ]; /* linked to name */ 159} HD_USTAR; 160