1 /* $NetBSD: tar.h,v 1.6 2002/10/12 15:39:30 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 1992 Keith Muller. 5 * Copyright (c) 1992, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * Keith Muller of the University of California, San Diego. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the University of 22 * California, Berkeley and its contributors. 23 * 4. Neither the name of the University nor the names of its contributors 24 * may be used to endorse or promote products derived from this software 25 * without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 * 39 * @(#)tar.h 8.2 (Berkeley) 4/18/94 40 */ 41 42 /* 43 * defines and data structures common to all tar formats 44 */ 45 #define CHK_LEN 8 /* length of checksum field */ 46 #define TNMSZ 100 /* size of name field */ 47 #ifdef _PAX_ 48 #define NULLCNT 2 /* number of null blocks in trailer */ 49 #define CHK_OFFSET 148 /* start of chksum field */ 50 #define BLNKSUM 256L /* sum of checksum field using ' ' */ 51 #endif /* _PAX_ */ 52 53 /* 54 * Values used in typeflag field in all tar formats 55 * (only REGTYPE, LNKTYPE and SYMTYPE are used in old bsd tar headers) 56 */ 57 #define REGTYPE '0' /* Regular File */ 58 #define AREGTYPE '\0' /* Regular File */ 59 #define LNKTYPE '1' /* Link */ 60 #define SYMTYPE '2' /* Symlink */ 61 #define CHRTYPE '3' /* Character Special File */ 62 #define BLKTYPE '4' /* Block Special File */ 63 #define DIRTYPE '5' /* Directory */ 64 #define FIFOTYPE '6' /* FIFO */ 65 #define CONTTYPE '7' /* high perf file */ 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 */ 100 typedef 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 2 138 139 typedef 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