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 */ 103 typedef 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 2 141 142 typedef 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