/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License, Version 1.0 only * (the "License"). You may not use this file except in compliance * with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2003 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ /* Copyright (c) 1983,1984,1985,1986,1987,1988,1989 AT&T. */ /* All rights reserved. */ /* * Portions of this source code were derived from Berkeley 4.3 BSD * under license from the Regents of the University of California. */ #ifndef _PROTOCOLS_DUMPRESTORE_H #define _PROTOCOLS_DUMPRESTORE_H #ifdef __cplusplus extern "C" { #endif /* * This header file defines two different versions of the * ufsdump/ufsrestore interface. If the defined constant * SUPPORTS_MTB_TAPE_FORMAT is set, the data structures in * this header file will support backups of more than 2 terabytes * of data. * * In the old format (the format that only supports dumps * of less than 2 terabytes), TP_BSIZE is the size of file blocks * on the dump tapes. * Note that TP_BSIZE must be a multiple of DEV_BSIZE. * * In the new format, tp_bsize is used to store the * tape block size, which is variable. The tape block size * is like 'fragsize', in that 'c_tapea' in each tape record * contains the 'tape block record' number in a signed int. * We set TP_BSIZE_MAX to 65536, which will handle 128TB * of data. The new format is indicated by a magic number * in the tape header of MTB_MAGIC. The new format is only * used when the size of the backup exceeds 2 TB. If the * backup can be stored in less thatn 2 TB, ufsdump still * uses the format indicated by the NFS_MAGIC magic number. * Therefore, backups of less than 2 TB are still readable * by earlier versions of ufsrestore. * * 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. CARTRIDGETREC is the * number of TP_BSIZE (or tp_bsize) blocks that are written * in each tape record on cartridge 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_MAX 65536 #define TP_BSIZE_MIN 1024 #define ESIZE_SHIFT_MAX 6 /* shift TP_BSIZE_MIN to TP_BSIZE_MAX */ #ifdef SUPPORTS_MTB_TAPE_FORMAT #define TP_BUFSIZE TP_BSIZE_MAX extern int32_t tp_bsize; #else #define TP_BSIZE 1024 #define TP_BUFSIZE TP_BSIZE #endif /* SUPPORTS_MTB_TAPE_FORMAT */ #define NTREC 10 #define HIGHDENSITYTREC 32 #define CARTRIDGETREC 63 #define TP_NINDIR (TP_BSIZE_MIN/2) #define TP_NINOS (TP_NINDIR / sizeof (long)) #define LBLSIZE 16 #define NAMELEN 64 #define OFS_MAGIC (int)60011 #define NFS_MAGIC (int)60012 #define MTB_MAGIC (int)60013 #define CHECKSUM (int)84446 union u_data { char s_addrs[TP_NINDIR]; /* 1 => data; 0 => hole in inode */ int32_t s_inos[TP_NINOS]; /* starting inodes on tape */ }; union u_shadow { struct s_nonsh { int32_t c_level; /* level of this dump */ char c_filesys[NAMELEN]; /* dumpped file system name */ char c_dev[NAMELEN]; /* name of dumpped device */ char c_host[NAMELEN]; /* name of dumpped host */ } c_nonsh; char c_shadow[1]; }; /* if you change anything here, be sure to change normspcl in byteorder.c */ extern union u_spcl { char dummy[TP_BUFSIZE]; struct s_spcl { int32_t c_type; /* record type (see below) */ time32_t c_date; /* date of previous dump */ time32_t c_ddate; /* date of this dump */ int32_t c_volume; /* dump volume number */ daddr32_t c_tapea; /* logical block of this record */ ino32_t c_inumber; /* number of inode */ int32_t c_magic; /* magic number (see above) */ int32_t c_checksum; /* record checksum */ struct dinode c_dinode; /* ownership and mode of inode */ int32_t c_count; /* number of valid c_addr entries */ union u_data c_data; /* see union above */ char c_label[LBLSIZE]; /* dump label */ union u_shadow c_shadow; /* see union above */ int32_t c_flags; /* additional information */ int32_t c_firstrec; /* first record on volume */ #ifdef SUPPORTS_MTB_TAPE_FORMAT int32_t c_tpbsize; /* tape block size */ int32_t c_spare[31]; /* reserved for future uses */ #else int32_t c_spare[32]; #endif /* SUPPORTS_MTB_TAPE_FORMAT */ } s_spcl; } u_spcl; #define spcl u_spcl.s_spcl #define c_addr c_data.s_addrs #define c_inos c_data.s_inos #define c_level c_shadow.c_nonsh.c_level #define c_filesys c_shadow.c_nonsh.c_filesys #define c_dev c_shadow.c_nonsh.c_dev #define c_host c_shadow.c_nonsh.c_host /* * 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 */ #define TS_EOM 7 /* floppy EOM - restore compat w/ old dump */ /* * flag values */ #define DR_NEWHEADER 1 /* new format tape header */ #define DR_INODEINFO 2 /* header contains starting inode info */ #define DR_REDUMP 4 /* dump contains recopies of active files */ #define DR_TRUEINC 8 /* dump is a "true incremental" */ #define DR_HASMETA 16 /* metadata in this header */ #define DUMPOUTFMT "%-32s %c %s" /* for printf */ /* name, incno, ctime(date) */ #define DUMPINFMT "%258s %c %128[^\n]\n" /* inverse for scanf */ #ifdef __cplusplus } #endif #endif /* !_PROTOCOLS_DUMPRESTORE_H */
