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/* $Id: tar.h $ */
/** @file
* IPRT - TAR Virtual Filesystem.
*/
/*
* Copyright (C) 2010 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*/
#ifndef __common_zip_tar_h
#define __common_zip_tar_h
#include <iprt/assert.h>
/** @name RTZIPTARHDRPOSIX::typeflag
* @{ */
#define RTZIPTAR_TF_OLDNORMAL '\0' /**< Normal disk file, Unix compatible */
#define RTZIPTAR_TF_NORMAL '0' /**< Normal disk file */
#define RTZIPTAR_TF_LINK '1' /**< Link to previously dumped file */
#define RTZIPTAR_TF_SYMLINK '2' /**< Symbolic link */
#define RTZIPTAR_TF_CHR '3' /**< Character special file */
#define RTZIPTAR_TF_BLK '4' /**< Block special file */
#define RTZIPTAR_TF_DIR '5' /**< Directory */
#define RTZIPTAR_TF_FIFO '6' /**< FIFO special file */
#define RTZIPTAR_TF_CONTIG '7' /**< Contiguous file */
#define RTZIPTAR_TF_X_HDR 'x' /**< Extended header. */
#define RTZIPTAR_TF_X_GLOBAL 'g' /**< Global extended header. */
#define RTZIPTAR_TF_SOLARIS_XHDR 'X'
#define RTZIPTAR_TF_GNU_DUMPDIR 'D'
#define RTZIPTAR_TF_GNU_LONGLINK 'K' /**< GNU long link header. */
#define RTZIPTAR_TF_GNU_LONGNAME 'L' /**< GNU long name header. */
#define RTZIPTAR_TF_GNU_MULTIVOL 'M'
#define RTZIPTAR_TF_GNU_SPARSE 'S'
#define RTZIPTAR_TF_GNU_VOLDHR 'V'
/** @} */
/**
* The ancient tar header.
*
* The posix and gnu headers are compatible with the members up to and including
* link name, from there on they differ.
*/
typedef struct RTZIPTARHDRANCIENT
{
char name[100];
char mode[8];
char uid[8];
char gid[8];
char size[12];
char mtime[12];
char chksum[8];
char typeflag;
char linkname[100]; /**< Was called linkflag. */
char unused[8+64+16+155+12];
} RTZIPTARHDRANCIENT;
AssertCompileSize(RTZIPTARHDRANCIENT, 512);
AssertCompileMemberOffset(RTZIPTARHDRANCIENT, name, 0);
AssertCompileMemberOffset(RTZIPTARHDRANCIENT, mode, 100);
AssertCompileMemberOffset(RTZIPTARHDRANCIENT, uid, 108);
AssertCompileMemberOffset(RTZIPTARHDRANCIENT, gid, 116);
AssertCompileMemberOffset(RTZIPTARHDRANCIENT, size, 124);
AssertCompileMemberOffset(RTZIPTARHDRANCIENT, mtime, 136);
AssertCompileMemberOffset(RTZIPTARHDRANCIENT, chksum, 148);
AssertCompileMemberOffset(RTZIPTARHDRANCIENT, typeflag, 156);
AssertCompileMemberOffset(RTZIPTARHDRANCIENT, linkname, 157);
AssertCompileMemberOffset(RTZIPTARHDRANCIENT, unused, 257);
/** The uniform standard tape archive format magic value. */
#define RTZIPTAR_USTAR_MAGIC "ustar"
/** The ustar version string.
* @remarks The terminator character is not part of the field. */
#define RTZIPTAR_USTAR_VERSION "00"
/**
* The posix header (according to SuS).
*/
typedef struct RTZIPTARHDRPOSIX
{
char name[100];
char mode[8];
char uid[8];
char gid[8];
char size[12];
char mtime[12];
char chksum[8];
char typeflag;
char linkname[100];
char magic[6];
char version[2];
char uname[32];
char gname[32];
char devmajor[8];
char devminor[8];
char prefix[155];
char unused[12];
} RTZIPTARHDRPOSIX;
AssertCompileSize(RTZIPTARHDRPOSIX, 512);
AssertCompileMemberOffset(RTZIPTARHDRPOSIX, name, 0);
AssertCompileMemberOffset(RTZIPTARHDRPOSIX, mode, 100);
AssertCompileMemberOffset(RTZIPTARHDRPOSIX, uid, 108);
AssertCompileMemberOffset(RTZIPTARHDRPOSIX, gid, 116);
AssertCompileMemberOffset(RTZIPTARHDRPOSIX, size, 124);
AssertCompileMemberOffset(RTZIPTARHDRPOSIX, mtime, 136);
AssertCompileMemberOffset(RTZIPTARHDRPOSIX, chksum, 148);
AssertCompileMemberOffset(RTZIPTARHDRPOSIX, typeflag, 156);
AssertCompileMemberOffset(RTZIPTARHDRPOSIX, linkname, 157);
AssertCompileMemberOffset(RTZIPTARHDRPOSIX, magic, 257);
AssertCompileMemberOffset(RTZIPTARHDRPOSIX, version, 263);
AssertCompileMemberOffset(RTZIPTARHDRPOSIX, uname, 265);
AssertCompileMemberOffset(RTZIPTARHDRPOSIX, gname, 297);
AssertCompileMemberOffset(RTZIPTARHDRPOSIX, devmajor, 329);
AssertCompileMemberOffset(RTZIPTARHDRPOSIX, devminor, 337);
AssertCompileMemberOffset(RTZIPTARHDRPOSIX, prefix, 345);
/**
* The GNU header.
*/
typedef struct RTZIPTARHDRGNU
{
char name[100];
char mode[8];
char uid[8];
char gid[8];
char size[12];
char mtime[12];
char chksum[8];
char typeflag;
char linkname[100];
char magic[8];
char uname[32];
char gname[32];
char devmajor[8];
char devminor[8];
char atime[12];
char ctime[12];
char offset[12];
char longnames[4];
char unused[1];
struct
{
char offset[12];
char numbytes[12];
} sparse[4];
char isextended;
char realsize[12];
char unused2[17];
} RTZIPTARHDRGNU;
AssertCompileSize(RTZIPTARHDRGNU, 512);
AssertCompileMemberOffset(RTZIPTARHDRGNU, name, 0);
AssertCompileMemberOffset(RTZIPTARHDRGNU, mode, 100);
AssertCompileMemberOffset(RTZIPTARHDRGNU, uid, 108);
AssertCompileMemberOffset(RTZIPTARHDRGNU, gid, 116);
AssertCompileMemberOffset(RTZIPTARHDRGNU, size, 124);
AssertCompileMemberOffset(RTZIPTARHDRGNU, mtime, 136);
AssertCompileMemberOffset(RTZIPTARHDRGNU, chksum, 148);
AssertCompileMemberOffset(RTZIPTARHDRGNU, typeflag, 156);
AssertCompileMemberOffset(RTZIPTARHDRGNU, linkname, 157);
AssertCompileMemberOffset(RTZIPTARHDRGNU, magic, 257);
AssertCompileMemberOffset(RTZIPTARHDRGNU, uname, 265);
AssertCompileMemberOffset(RTZIPTARHDRGNU, gname, 297);
AssertCompileMemberOffset(RTZIPTARHDRGNU, devmajor, 329);
AssertCompileMemberOffset(RTZIPTARHDRGNU, devminor, 337);
AssertCompileMemberOffset(RTZIPTARHDRGNU, atime, 345);
AssertCompileMemberOffset(RTZIPTARHDRGNU, ctime, 357);
AssertCompileMemberOffset(RTZIPTARHDRGNU, offset, 369);
AssertCompileMemberOffset(RTZIPTARHDRGNU, longnames, 381);
AssertCompileMemberOffset(RTZIPTARHDRGNU, unused, 385);
AssertCompileMemberOffset(RTZIPTARHDRGNU, sparse, 386);
AssertCompileMemberOffset(RTZIPTARHDRGNU, isextended,482);
AssertCompileMemberOffset(RTZIPTARHDRGNU, realsize, 483);
AssertCompileMemberOffset(RTZIPTARHDRGNU, unused2, 495);
/**
* The bits common to posix and GNU.
*/
typedef struct RTZIPTARHDRCOMMON
{
char name[100];
char mode[8];
char uid[8];
char gid[8];
char size[12];
char mtime[12];
char chksum[8];
char typeflag;
char linkname[100];
char magic[6];
char version[2];
char uname[32];
char gname[32];
char devmajor[8];
char devminor[8];
char not_common[155+12];
} RTZIPTARHDRCOMMON;
/**
* Tar header union.
*/
typedef union RTZIPTARHDR
{
/** Byte view. */
char ab[512];
/** The standard header. */
RTZIPTARHDRANCIENT Ancient;
/** The standard header. */
RTZIPTARHDRPOSIX Posix;
/** The GNU header. */
RTZIPTARHDRGNU Gnu;
/** The bits common to both GNU and the standard header. */
RTZIPTARHDRCOMMON Common;
} RTZIPTARHDR;
AssertCompileSize(RTZIPTARHDR, 512);
/** Pointer to a tar file header. */
typedef RTZIPTARHDR *PRTZIPTARHDR;
/** Pointer to a const tar file header. */
typedef RTZIPTARHDR const *PCRTZIPTARHDR;
/**
* Tar header type.
*/
typedef enum RTZIPTARTYPE
{
/** Invalid type value. */
RTZIPTARTYPE_INVALID = 0,
/** Posix header. */
RTZIPTARTYPE_POSIX,
/** The old GNU header, has layout conflicting with posix. */
RTZIPTARTYPE_GNU,
/** Ancient tar header which does not use anything beyond the magic. */
RTZIPTARTYPE_ANCIENT,
/** End of the valid type values (this is not valid). */
RTZIPTARTYPE_END,
/** The usual type blow up. */
RTZIPTARTYPE_32BIT_HACK = 0x7fffffff
} RTZIPTARTYPE;
typedef RTZIPTARTYPE *PRTZIPTARTYPE;
#endif
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