1/* $OpenBSD: tar.h,v 1.7 2003/06/02 23:32:09 millert 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#define PAXXTYPE 'x' /* pax format extended header */ 65#define PAXGTYPE 'g' /* pax format global extended header */ 66 67/* 68 * GNU tar compatibility; 69 */ 70#define LONGLINKTYPE 'K' /* Long Symlink */ 71#define LONGNAMETYPE 'L' /* Long File */ 72 73/* 74 * Mode field encoding of the different file types - values in octal 75 */ 76#define TSUID 04000 /* Set UID on execution */ 77#define TSGID 02000 /* Set GID on execution */ 78#define TSVTX 01000 /* Reserved */ 79#define TUREAD 00400 /* Read by owner */ 80#define TUWRITE 00200 /* Write by owner */ 81#define TUEXEC 00100 /* Execute/Search by owner */ 82#define TGREAD 00040 /* Read by group */ 83#define TGWRITE 00020 /* Write by group */ 84#define TGEXEC 00010 /* Execute/Search by group */ 85#define TOREAD 00004 /* Read by other */ 86#define TOWRITE 00002 /* Write by other */ 87#define TOEXEC 00001 /* Execute/Search by other */ 88 89#ifdef _PAX_ 90/* 91 * Pad with a bit mask, much faster than doing a mod but only works on powers 92 * of 2. Macro below is for block of 512 bytes. 93 */ 94#define TAR_PAD(x) ((512 - ((x) & 511)) & 511) 95#endif /* _PAX_ */ 96 97/* 98 * structure of an old tar header as it appeared in BSD releases 99 */ 100typedef struct { 101 char name[TNMSZ]; /* name of entry */ 102 char mode[8]; /* mode */ 103 char uid[8]; /* uid */ 104 char gid[8]; /* gid */ 105 char size[12]; /* size */ 106 char mtime[12]; /* modification time */ 107 char chksum[CHK_LEN]; /* checksum */ 108 char linkflag; /* norm, hard, or sym. */ 109 char linkname[TNMSZ]; /* linked to name */ 110} HD_TAR; 111 112#ifdef _PAX_ 113/* 114 * -o options for BSD tar to not write directories to the archive 115 */ 116#define TAR_NODIR "nodir" 117#define TAR_OPTION "write_opt" 118 119/* 120 * default device names 121 */ 122#define DEV_0 "/dev/rst0" 123#define DEV_1 "/dev/rst1" 124#define DEV_4 "/dev/rst4" 125#define DEV_5 "/dev/rst5" 126#define DEV_7 "/dev/rst7" 127#define DEV_8 "/dev/rst8" 128#endif /* _PAX_ */ 129 130/* 131 * Data Interchange Format - Extended tar header format - POSIX 1003.1-1990 132 */ 133#define TPFSZ 155 134#define TMAGIC "ustar" /* ustar and a null */ 135#define TMAGLEN 6 136#define TVERSION "00" /* 00 and no null */ 137#define TVERSLEN 2 138 139typedef struct { 140 char name[TNMSZ]; /* name of entry */ 141 char mode[8]; /* mode */ 142 char uid[8]; /* uid */ 143 char gid[8]; /* gid */ 144 char size[12]; /* size */ 145 char mtime[12]; /* modification time */ 146 char chksum[CHK_LEN]; /* checksum */ 147 char typeflag; /* type of file. */ 148 char linkname[TNMSZ]; /* linked to name */ 149 char magic[TMAGLEN]; /* magic cookie */ 150 char version[TVERSLEN]; /* version */ 151 char uname[32]; /* ascii owner name */ 152 char gname[32]; /* ascii group name */ 153 char devmajor[8]; /* major device number */ 154 char devminor[8]; /* minor device number */ 155 char prefix[TPFSZ]; /* linked to name */ 156} HD_USTAR; 157