File: vfs_tar.h

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/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 *
 * See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *     
 * $Id: vfs_tar.h,v 1.1 2007-10-08 14:50:53 dkure Exp $
 *             
 */

#ifndef __VFS_TAR_H__
#define __VFS_TAR_H__

/* values used in typeflag field */

#define REGTYPE  '0'            /* regular file */
#define AREGTYPE '\0'           /* regular file */
#define LNKTYPE  '1'            /* link */
#define SYMTYPE  '2'            /* reserved */
#define CHRTYPE  '3'            /* character special */
#define BLKTYPE  '4'            /* block special */
#define DIRTYPE  '5'            /* directory */
#define FIFOTYPE '6'            /* FIFO special */
#define CONTTYPE '7'            /* reserved */

/* GNU tar extensions */

#define GNUTYPE_DUMPDIR  'D'    /* file names from dumped directory */
#define GNUTYPE_LONGLINK 'K'    /* long link name */
#define GNUTYPE_LONGNAME 'L'    /* long file name */
#define GNUTYPE_MULTIVOL 'M'    /* continuation of file from another volume */
#define GNUTYPE_NAMES    'N'    /* file name that does not fit into main hdr */
#define GNUTYPE_SPARSE   'S'    /* sparse file */
#define GNUTYPE_VOLHDR   'V'    /* tape/volume header */


/* tar header */

#define BLOCKSIZE     512
#define SHORTNAMESIZE 100

struct tar_header
{                               /* byte offset */
  char name[100];               /*   0 */
  char mode[8];                 /* 100 */
  char uid[8];                  /* 108 */
  char gid[8];                  /* 116 */
  char size[12];                /* 124 */
  char mtime[12];               /* 136 */
  char chksum[8];               /* 148 */
  char typeflag;                /* 156 */
  char linkname[100];           /* 157 */
  char magic[6];                /* 257 */
  char version[2];              /* 263 */
  char uname[32];               /* 265 */
  char gname[32];               /* 297 */
  char devmajor[8];             /* 329 */
  char devminor[8];             /* 337 */
  char prefix[155];             /* 345 */
                                /* 500 */
};

union tar_buffer
{
  char               buffer[BLOCKSIZE];
  struct tar_header  header;
};

struct attr_item
{
  struct attr_item  *next;
  char              *fname;
  int                mode;
  time_t             time;
};

enum { 
	TGZ_EXTRACT,
	TGZ_LIST,
	TGZ_INVALID 
};

typedef enum { 
	HEADER_NONE,
	HEADER_SHORTNAME,
	HEADER_LONGNAME,
	GET_HEADER = HEADER_SHORTNAME | HEADER_LONGNAME
} vfsTarHeaderType_t;

#endif /* __VFS_TAR_H__ */