150 lines
5.3 KiB
C
150 lines
5.3 KiB
C
/*-
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* Copyright (c) 1992 Keith Muller.
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Keith Muller of the University of California, San Diego.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)tar.h 8.2 (Berkeley) 4/18/94
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* $FreeBSD$
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*/
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/*
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* defines and data structures common to all tar formats
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*/
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#define CHK_LEN 8 /* length of checksum field */
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#define TNMSZ 100 /* size of name field */
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#ifdef _PAX_
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#define NULLCNT 2 /* number of null blocks in trailer */
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#define CHK_OFFSET 148 /* start of checksum field */
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#define BLNKSUM 256L /* sum of checksum field using ' ' */
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#endif /* _PAX_ */
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/*
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* Values used in typeflag field in all tar formats
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* (only REGTYPE, LNKTYPE and SYMTYPE are used in old BSD tar headers)
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*/
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#define REGTYPE '0' /* Regular File */
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#define AREGTYPE '\0' /* Regular File */
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#define LNKTYPE '1' /* Link */
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#define SYMTYPE '2' /* Symlink */
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#define CHRTYPE '3' /* Character Special File */
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#define BLKTYPE '4' /* Block Special File */
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#define DIRTYPE '5' /* Directory */
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#define FIFOTYPE '6' /* FIFO */
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#define CONTTYPE '7' /* high perf file */
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/*
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* Mode field encoding of the different file types - values in octal
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*/
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#define TSUID 04000 /* Set UID on execution */
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#define TSGID 02000 /* Set GID on execution */
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#define TSVTX 01000 /* Reserved */
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#define TUREAD 00400 /* Read by owner */
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#define TUWRITE 00200 /* Write by owner */
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#define TUEXEC 00100 /* Execute/Search by owner */
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#define TGREAD 00040 /* Read by group */
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#define TGWRITE 00020 /* Write by group */
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#define TGEXEC 00010 /* Execute/Search by group */
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#define TOREAD 00004 /* Read by other */
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#define TOWRITE 00002 /* Write by other */
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#define TOEXEC 00001 /* Execute/Search by other */
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#ifdef _PAX_
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/*
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* Pad with a bit mask, much faster than doing a mod but only works on powers
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* of 2. Macro below is for block of 512 bytes.
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*/
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#define TAR_PAD(x) ((512 - ((x) & 511)) & 511)
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#endif /* _PAX_ */
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/*
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* structure of an old tar header as it appeared in BSD releases
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*/
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typedef struct {
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char name[TNMSZ]; /* name of entry */
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char mode[8]; /* mode */
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char uid[8]; /* uid */
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char gid[8]; /* gid */
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char size[12]; /* size */
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char mtime[12]; /* modification time */
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char chksum[CHK_LEN]; /* checksum */
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char linkflag; /* norm, hard, or sym. */
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char linkname[TNMSZ]; /* linked to name */
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} HD_TAR;
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#ifdef _PAX_
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/*
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* -o options for BSD tar to not write directories to the archive
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*/
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#define TAR_NODIR "nodir"
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#define TAR_OPTION "write_opt"
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/*
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* default device names
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*/
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#define DEV_0 "/dev/rmt0"
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#define DEV_1 "/dev/rmt1"
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#define DEV_4 "/dev/rmt4"
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#define DEV_5 "/dev/rmt5"
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#define DEV_7 "/dev/rmt7"
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#define DEV_8 "/dev/rmt8"
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#endif /* _PAX_ */
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/*
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* Data Interchange Format - Extended tar header format - POSIX 1003.1-1990
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*/
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#define TPFSZ 155
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#define TMAGIC "ustar" /* ustar and a null */
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#define TMAGLEN 6
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#define TVERSION "00" /* 00 and no null */
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#define TVERSLEN 2
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typedef struct {
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char name[TNMSZ]; /* name of entry */
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char mode[8]; /* mode */
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char uid[8]; /* uid */
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char gid[8]; /* gid */
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char size[12]; /* size */
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char mtime[12]; /* modification time */
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char chksum[CHK_LEN]; /* checksum */
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char typeflag; /* type of file. */
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char linkname[TNMSZ]; /* linked to name */
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char magic[TMAGLEN]; /* magic cookie */
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char version[TVERSLEN]; /* version */
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char uname[32]; /* ascii owner name */
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char gname[32]; /* ascii group name */
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char devmajor[8]; /* major device number */
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char devminor[8]; /* minor device number */
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char prefix[TPFSZ]; /* linked to name */
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} HD_USTAR;
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