1 /*- 2 * Copyright (c) 1992 Keith Muller. 3 * Copyright (c) 1992, 1993 4 * The Regents of the University of California. All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * Keith Muller of the University of California, San Diego. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)tar.h 8.2 (Berkeley) 4/18/94 34 * $FreeBSD$ 35 */ 36 37 /* 38 * defines and data structures common to all tar formats 39 */ 40 #define CHK_LEN 8 /* length of checksum field */ 41 #define TNMSZ 100 /* size of name field */ 42 #ifdef _PAX_ 43 #define NULLCNT 2 /* number of null blocks in trailer */ 44 #define CHK_OFFSET 148 /* start of checksum field */ 45 #define BLNKSUM 256L /* sum of checksum field using ' ' */ 46 #endif /* _PAX_ */ 47 48 /* 49 * Values used in typeflag field in all tar formats 50 * (only REGTYPE, LNKTYPE and SYMTYPE are used in old BSD tar headers) 51 */ 52 #define REGTYPE '0' /* Regular File */ 53 #define AREGTYPE '\0' /* Regular File */ 54 #define LNKTYPE '1' /* Link */ 55 #define SYMTYPE '2' /* Symlink */ 56 #define CHRTYPE '3' /* Character Special File */ 57 #define BLKTYPE '4' /* Block Special File */ 58 #define DIRTYPE '5' /* Directory */ 59 #define FIFOTYPE '6' /* FIFO */ 60 #define CONTTYPE '7' /* high perf file */ 61 62 /* 63 * Mode field encoding of the different file types - values in octal 64 */ 65 #define TSUID 04000 /* Set UID on execution */ 66 #define TSGID 02000 /* Set GID on execution */ 67 #define TSVTX 01000 /* Reserved */ 68 #define TUREAD 00400 /* Read by owner */ 69 #define TUWRITE 00200 /* Write by owner */ 70 #define TUEXEC 00100 /* Execute/Search by owner */ 71 #define TGREAD 00040 /* Read by group */ 72 #define TGWRITE 00020 /* Write by group */ 73 #define TGEXEC 00010 /* Execute/Search by group */ 74 #define TOREAD 00004 /* Read by other */ 75 #define TOWRITE 00002 /* Write by other */ 76 #define TOEXEC 00001 /* Execute/Search by other */ 77 78 #ifdef _PAX_ 79 /* 80 * Pad with a bit mask, much faster than doing a mod but only works on powers 81 * of 2. Macro below is for block of 512 bytes. 82 */ 83 #define TAR_PAD(x) ((512 - ((x) & 511)) & 511) 84 #endif /* _PAX_ */ 85 86 /* 87 * structure of an old tar header as it appeared in BSD releases 88 */ 89 typedef struct { 90 char name[TNMSZ]; /* name of entry */ 91 char mode[8]; /* mode */ 92 char uid[8]; /* uid */ 93 char gid[8]; /* gid */ 94 char size[12]; /* size */ 95 char mtime[12]; /* modification time */ 96 char chksum[CHK_LEN]; /* checksum */ 97 char linkflag; /* norm, hard, or sym. */ 98 char linkname[TNMSZ]; /* linked to name */ 99 } HD_TAR __aligned(1); 100 101 #ifdef _PAX_ 102 /* 103 * -o options for BSD tar to not write directories to the archive 104 */ 105 #define TAR_NODIR "nodir" 106 #define TAR_OPTION "write_opt" 107 108 /* 109 * default device names 110 */ 111 #define DEV_0 "/dev/rmt0" 112 #define DEV_1 "/dev/rmt1" 113 #define DEV_4 "/dev/rmt4" 114 #define DEV_5 "/dev/rmt5" 115 #define DEV_7 "/dev/rmt7" 116 #define DEV_8 "/dev/rmt8" 117 #endif /* _PAX_ */ 118 119 /* 120 * Data Interchange Format - Extended tar header format - POSIX 1003.1-1990 121 */ 122 #define TPFSZ 155 123 #define TMAGIC "ustar" /* ustar and a null */ 124 #define TMAGLEN 6 125 #define TVERSION "00" /* 00 and no null */ 126 #define TVERSLEN 2 127 128 typedef struct { 129 char name[TNMSZ]; /* name of entry */ 130 char mode[8]; /* mode */ 131 char uid[8]; /* uid */ 132 char gid[8]; /* gid */ 133 char size[12]; /* size */ 134 char mtime[12]; /* modification time */ 135 char chksum[CHK_LEN]; /* checksum */ 136 char typeflag; /* type of file. */ 137 char linkname[TNMSZ]; /* linked to name */ 138 char magic[TMAGLEN]; /* magic cookie */ 139 char version[TVERSLEN]; /* version */ 140 char uname[32]; /* ascii owner name */ 141 char gname[32]; /* ascii group name */ 142 char devmajor[8]; /* major device number */ 143 char devminor[8]; /* minor device number */ 144 char prefix[TPFSZ]; /* linked to name */ 145 } HD_USTAR __aligned(1); 146