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tar.h
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tar.h
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/* $NetBSD: tar.h,v 1.9 2004/05/11 17:12:26 christos Exp $ */
/*-
* Copyright (c) 1992 Keith Muller.
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Keith Muller of the University of California, San Diego.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)tar.h 8.2 (Berkeley) 4/18/94
*/
/*
* defines and data structures common to all tar formats
*/
#define CHK_LEN 8 /* length of checksum field */
#define TNMSZ 100 /* size of name field */
#ifdef _PAX_
#define NULLCNT 2 /* number of null blocks in trailer */
#define CHK_OFFSET 148 /* start of chksum field */
#define BLNKSUM 256L /* sum of checksum field using ' ' */
#endif /* _PAX_ */
/*
* Values used in typeflag field in all tar formats
* (only REGTYPE, LNKTYPE and SYMTYPE are used in old bsd tar headers)
*/
#define REGTYPE '0' /* Regular File */
#define AREGTYPE '\0' /* Regular File */
#define LNKTYPE '1' /* Link */
#define SYMTYPE '2' /* Symlink */
#define CHRTYPE '3' /* Character Special File */
#define BLKTYPE '4' /* Block Special File */
#define DIRTYPE '5' /* Directory */
#define FIFOTYPE '6' /* FIFO */
#define CONTTYPE '7' /* high perf file */
/*
* GNU tar compatibility;
*/
#define LONGLINKTYPE 'K' /* Long Symlink */
#define LONGNAMETYPE 'L' /* Long File */
/*
* Mode field encoding of the different file types - values in octal
*/
#define TSUID 04000 /* Set UID on execution */
#define TSGID 02000 /* Set GID on execution */
#define TSVTX 01000 /* Reserved */
#define TUREAD 00400 /* Read by owner */
#define TUWRITE 00200 /* Write by owner */
#define TUEXEC 00100 /* Execute/Search by owner */
#define TGREAD 00040 /* Read by group */
#define TGWRITE 00020 /* Write by group */
#define TGEXEC 00010 /* Execute/Search by group */
#define TOREAD 00004 /* Read by other */
#define TOWRITE 00002 /* Write by other */
#define TOEXEC 00001 /* Execute/Search by other */
#ifdef _PAX_
/*
* Pad with a bit mask, much faster than doing a mod but only works on powers
* of 2. Macro below is for block of 512 bytes.
*/
#define TAR_PAD(x) ((512 - ((x) & 511)) & 511)
#endif /* _PAX_ */
/*
* structure of an old tar header as it appeared in BSD releases
*/
typedef struct {
char name[TNMSZ]; /* name of entry */
char mode[8]; /* mode */
char uid[8]; /* uid */
char gid[8]; /* gid */
char size[12]; /* size */
char mtime[12]; /* modification time */
char chksum[CHK_LEN]; /* checksum */
char linkflag; /* norm, hard, or sym. */
char linkname[TNMSZ]; /* linked to name */
} HD_TAR;
#ifdef _PAX_
/*
* -o options for BSD tar to not write directories to the archive
*/
#define TAR_NODIR "nodir"
#define TAR_OPTION "write_opt"
/*
* default device names
*/
extern char DEV_0[];
extern char DEV_1[];
extern char DEV_4[];
extern char DEV_5[];
extern char DEV_7[];
extern char DEV_8[];
#endif /* _PAX_ */
/*
* Data Interchange Format - Extended tar header format - POSIX 1003.1-1990
*/
#define TPFSZ 155
#define TMAGIC "ustar" /* ustar and a null */
#define TMAGLEN 6
#define TVERSION "00" /* 00 and no null */
#define TVERSLEN 2
typedef struct {
char name[TNMSZ]; /* name of entry */
char mode[8]; /* mode */
char uid[8]; /* uid */
char gid[8]; /* gid */
char size[12]; /* size */
char mtime[12]; /* modification time */
char chksum[CHK_LEN]; /* checksum */
char typeflag; /* type of file. */
char linkname[TNMSZ]; /* linked to name */
char magic[TMAGLEN]; /* magic cookie */
char version[TVERSLEN]; /* version */
char uname[32]; /* ascii owner name */
char gname[32]; /* ascii group name */
char devmajor[8]; /* major device number */
char devminor[8]; /* minor device number */
char prefix[TPFSZ]; /* linked to name */
} HD_USTAR;