1 /** $MirOS: src/bin/pax/tar.h,v 1.2 2012/02/12 00:27:18 tg Exp $ */ 2 /* $OpenBSD: tar.h,v 1.7 2003/06/02 23:32:09 millert Exp $ */ 3 /* $NetBSD: tar.h,v 1.3 1995/03/21 09:07:51 cgd Exp $ */ 4 5 /*- 6 * Copyright (c) 1992 Keith Muller. 7 * Copyright (c) 1992, 1993 8 * The Regents of the University of California. All rights reserved. 9 * 10 * This code is derived from software contributed to Berkeley by 11 * Keith Muller of the University of California, San Diego. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 3. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * @(#)tar.h 8.2 (Berkeley) 4/18/94 38 */ 39 40 /* 41 * defines and data structures common to all tar formats 42 */ 43 #define CHK_LEN 8 /* length of checksum field */ 44 #define TNMSZ 100 /* size of name field */ 45 #ifdef _PAX_ 46 #define NULLCNT 2 /* number of null blocks in trailer */ 47 #define CHK_OFFSET 148 /* start of chksum field */ 48 #define BLNKSUM 256L /* sum of checksum field using ' ' */ 49 #endif /* _PAX_ */ 50 51 /* 52 * Values used in typeflag field in all tar formats 53 * (only REGTYPE, LNKTYPE and SYMTYPE are used in old bsd tar headers) 54 */ 55 #define REGTYPE '0' /* Regular File */ 56 #define AREGTYPE '\0' /* Regular File */ 57 #define LNKTYPE '1' /* Link */ 58 #define SYMTYPE '2' /* Symlink */ 59 #define CHRTYPE '3' /* Character Special File */ 60 #define BLKTYPE '4' /* Block Special File */ 61 #define DIRTYPE '5' /* Directory */ 62 #define FIFOTYPE '6' /* FIFO */ 63 #define CONTTYPE '7' /* high perf file */ 64 65 /* 66 * GNU tar compatibility; 67 */ 68 #define LONGLINKTYPE 'K' /* Long Symlink */ 69 #define LONGNAMETYPE 'L' /* Long File */ 70 71 /* 72 * Mode field encoding of the different file types - values in octal 73 */ 74 #define TSUID 04000 /* Set UID on execution */ 75 #define TSGID 02000 /* Set GID on execution */ 76 #define TSVTX 01000 /* Reserved */ 77 #define TUREAD 00400 /* Read by owner */ 78 #define TUWRITE 00200 /* Write by owner */ 79 #define TUEXEC 00100 /* Execute/Search by owner */ 80 #define TGREAD 00040 /* Read by group */ 81 #define TGWRITE 00020 /* Write by group */ 82 #define TGEXEC 00010 /* Execute/Search by group */ 83 #define TOREAD 00004 /* Read by other */ 84 #define TOWRITE 00002 /* Write by other */ 85 #define TOEXEC 00001 /* Execute/Search by other */ 86 87 #ifdef _PAX_ 88 /* 89 * Pad with a bit mask, much faster than doing a mod but only works on powers 90 * of 2. Macro below is for block of 512 bytes. 91 */ 92 #define TAR_PAD(x) ((512 - ((x) & 511)) & 511) 93 #endif /* _PAX_ */ 94 95 /* 96 * structure of an old tar header as it appeared in BSD releases 97 */ 98 typedef struct { 99 char name[TNMSZ]; /* name of entry */ 100 char mode[8]; /* mode */ 101 char uid[8]; /* uid */ 102 char gid[8]; /* gid */ 103 char size[12]; /* size */ 104 char mtime[12]; /* modification time */ 105 char chksum[CHK_LEN]; /* checksum */ 106 char linkflag; /* norm, hard, or sym. */ 107 char linkname[TNMSZ]; /* linked to name */ 108 } HD_TAR; 109 110 #ifdef _PAX_ 111 /* 112 * -o options for BSD tar to not write directories to the archive 113 */ 114 #define TAR_NODIR "nodir" 115 #define TAR_OPTION "write_opt" 116 117 /* 118 * default device names 119 */ 120 #define DEV_0 "/dev/rst0" 121 #define DEV_1 "/dev/rst1" 122 #define DEV_4 "/dev/rst4" 123 #define DEV_5 "/dev/rst5" 124 #define DEV_7 "/dev/rst7" 125 #define DEV_8 "/dev/rst8" 126 #endif /* _PAX_ */ 127 128 /* 129 * Data Interchange Format - Extended tar header format - POSIX 1003.1-1990 130 */ 131 #define TPFSZ 155 132 #define TMAGIC "ustar" /* ustar and a null */ 133 #define TMAGLEN 6 134 #define TVERSION "00" /* 00 and no null */ 135 #define TVERSLEN 2 136 137 typedef struct { 138 char name[TNMSZ]; /* name of entry */ 139 char mode[8]; /* mode */ 140 char uid[8]; /* uid */ 141 char gid[8]; /* gid */ 142 char size[12]; /* size */ 143 char mtime[12]; /* modification time */ 144 char chksum[CHK_LEN]; /* checksum */ 145 char typeflag; /* type of file. */ 146 char linkname[TNMSZ]; /* linked to name */ 147 char magic[TMAGLEN]; /* magic cookie */ 148 char version[TVERSLEN]; /* version */ 149 char uname[32]; /* ascii owner name */ 150 char gname[32]; /* ascii group name */ 151 char devmajor[8]; /* major device number */ 152 char devminor[8]; /* minor device number */ 153 char prefix[TPFSZ]; /* linked to name */ 154 } HD_USTAR; 155