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/*
* Ported to Linux's Second Extended File System as part of the
* dump and restore backup suit
* Remy Card <card@Linux.EU.Org>, 1994-1997
* Stelian Pop <stelian@popies.net>, 1999-2000
* Stelian Pop <stelian@popies.net> - Alcve <www.alcove.com>, 2000-2002
*
* $Id: dumprestore.h,v 1.16 2002/01/25 14:59:53 stelian Exp $
*/
/*
* Copyright (c) 1980, 1993
* The Regents of the University of California. All rights reserved.
* (c) UNIX System Laboratories, Inc.
* All or some portions of this file are derived from material licensed
* to the University of California by American Telephone and Telegraph
* Co. or Unix System Laboratories, Inc. and are reproduced herein with
* the permission of UNIX System Laboratories, Inc.
*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. 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.
*/
#ifndef _PROTOCOLS_DUMPRESTORE_H_
#define _PROTOCOLS_DUMPRESTORE_H_
#include <config.h>
/*
* TP_BSIZE is the size of file blocks on the dump tapes.
* Note that TP_BSIZE must be a multiple of DEV_BSIZE.
*
* NTREC is the number of TP_BSIZE blocks that are written
* in each tape record. HIGHDENSITYTREC is the number of
* TP_BSIZE blocks that are written in each tape record on
* 6250 BPI or higher density tapes.
*
* TP_NINDIR is the number of indirect pointers in a TS_INODE
* or TS_ADDR record. Note that it must be a power of two.
*/
#define TP_BSIZE 1024
#define NTREC 10
#define HIGHDENSITYTREC 32
#define TP_NINDIR (TP_BSIZE/2)
#define TP_NINOS (TP_NINDIR / sizeof (int32_t))
#define LBLSIZE 16
#define NAMELEN 64
#define OFS_MAGIC (int)60011
#define NFS_MAGIC (int)60012
#define CHECKSUM (int)84446
typedef u_int32_t dump_ino_t;
union u_data {
char s_addrs[TP_NINDIR]; /* 1 => data; 0 => hole in inode */
int32_t s_inos[TP_NINOS]; /* table of first inode on each volume */
} u_data;
union u_spcl {
char dummy[TP_BSIZE];
struct s_spcl {
int32_t c_type; /* record type (see below) */
int32_t c_date; /* date of this dump */
int32_t c_ddate; /* date of previous dump */
int32_t c_volume; /* dump volume number */
daddr_t c_tapea; /* logical block of this record */
dump_ino_t c_inumber; /* number of inode */
int32_t c_magic; /* magic number (see above) */
int32_t c_checksum; /* record checksum */
#ifdef __linux__
struct new_bsd_inode c_dinode;
#else
struct dinode c_dinode; /* ownership and mode of inode */
#endif
int32_t c_count; /* number of valid c_addr entries */
union u_data c_data; /* see above */
char c_label[LBLSIZE]; /* dump label */
int32_t c_level; /* level of this dump */
char c_filesys[NAMELEN]; /* name of dumpped file system */
char c_dev[NAMELEN]; /* name of dumpped device */
char c_host[NAMELEN]; /* name of dumpped host */
int32_t c_flags; /* additional information */
int32_t c_firstrec; /* first record on volume */
int32_t c_ntrec; /* blocksize on volume */
int32_t c_spare[31]; /* reserved for future uses */
} s_spcl;
} u_spcl;
#define spcl u_spcl.s_spcl
#define c_addr c_data.s_addrs
#define c_inos c_data.s_inos
/*
* special record types
*/
#define TS_TAPE 1 /* dump tape header */
#define TS_INODE 2 /* beginning of file record */
#define TS_ADDR 4 /* continuation of file record */
#define TS_BITS 3 /* map of inodes on tape */
#define TS_CLRI 6 /* map of inodes deleted since last dump */
#define TS_END 5 /* end of volume marker */
/*
* flag values
*/
#define DR_NEWHEADER 0x0001 /* new format tape header */
#define DR_NEWINODEFMT 0x0002 /* new format inodes on tape */
#define DR_COMPRESSED 0x0080 /* dump tape is compressed */
#define DR_INODEINFO 0x0002 /* TS_END header contains c_inos information */
/*
* compression flags for the tapebuf header.
*/
#define COMPRESS_ZLIB 0
#define COMPRESS_BZLIB 1
/* used for compressed dump tapes */
struct tapebuf {
unsigned int compressed:1;
unsigned int flags:3;
unsigned int length:28;
char buf[0]; /* the data */
};
#endif /* !_DUMPRESTORE_H_ */
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