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 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the University of 20 * California, Berkeley and its contributors. 21 * 4. 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 * Mode field encoding of the different file types - values in octal 67 */ 68 #define TSUID 04000 /* Set UID on execution */ 69 #define TSGID 02000 /* Set GID on execution */ 70 #define TSVTX 01000 /* Reserved */ 71 #define TUREAD 00400 /* Read by owner */ 72 #define TUWRITE 00200 /* Write by owner */ 73 #define TUEXEC 00100 /* Execute/Search by owner */ 74 #define TGREAD 00040 /* Read by group */ 75 #define TGWRITE 00020 /* Write by group */ 76 #define TGEXEC 00010 /* Execute/Search by group */ 77 #define TOREAD 00004 /* Read by other */ 78 #define TOWRITE 00002 /* Write by other */ 79 #define TOEXEC 00001 /* Execute/Search by other */ 80 81 #ifdef _PAX_ 82 /* 83 * Pad with a bit mask, much faster than doing a mod but only works on powers 84 * of 2. Macro below is for block of 512 bytes. 85 */ 86 #define TAR_PAD(x) ((512 - ((x) & 511)) & 511) 87 #endif /* _PAX_ */ 88 89 /* 90 * structure of an old tar header as it appeared in BSD releases 91 */ 92 typedef struct { 93 char name[TNMSZ]; /* name of entry */ 94 char mode[8]; /* mode */ 95 char uid[8]; /* uid */ 96 char gid[8]; /* gid */ 97 char size[12]; /* size */ 98 char mtime[12]; /* modification time */ 99 char chksum[CHK_LEN]; /* checksum */ 100 char linkflag; /* norm, hard, or sym. */ 101 char linkname[TNMSZ]; /* linked to name */ 102 } HD_TAR; 103 104 #ifdef _PAX_ 105 /* 106 * -o options for BSD tar to not write directories to the archive 107 */ 108 #define TAR_NODIR "nodir" 109 #define TAR_OPTION "write_opt" 110 111 /* 112 * default device names 113 */ 114 #define DEV_0 "/dev/rmt0" 115 #define DEV_1 "/dev/rmt1" 116 #define DEV_4 "/dev/rmt4" 117 #define DEV_5 "/dev/rmt5" 118 #define DEV_7 "/dev/rmt7" 119 #define DEV_8 "/dev/rmt8" 120 #endif /* _PAX_ */ 121 122 /* 123 * Data Interchange Format - Extended tar header format - POSIX 1003.1-1990 124 */ 125 #define TPFSZ 155 126 #define TMAGIC "ustar" /* ustar and a null */ 127 #define TMAGLEN 6 128 #define TVERSION "00" /* 00 and no null */ 129 #define TVERSLEN 2 130 131 typedef struct { 132 char name[TNMSZ]; /* name of entry */ 133 char mode[8]; /* mode */ 134 char uid[8]; /* uid */ 135 char gid[8]; /* gid */ 136 char size[12]; /* size */ 137 char mtime[12]; /* modification time */ 138 char chksum[CHK_LEN]; /* checksum */ 139 char typeflag; /* type of file. */ 140 char linkname[TNMSZ]; /* linked to name */ 141 char magic[TMAGLEN]; /* magic cookie */ 142 char version[TVERSLEN]; /* version */ 143 char uname[32]; /* ascii owner name */ 144 char gname[32]; /* ascii group name */ 145 char devmajor[8]; /* major device number */ 146 char devminor[8]; /* minor device number */ 147 char prefix[TPFSZ]; /* linked to name */ 148 } HD_USTAR; 149