1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2003 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* Copyright (c) 1983,1984,1985,1986,1987,1988,1989 AT&T. */ 28 /* All rights reserved. */ 29 30 /* 31 * Portions of this source code were derived from Berkeley 4.3 BSD 32 * under license from the Regents of the University of California. 33 */ 34 35 #ifndef _PROTOCOLS_DUMPRESTORE_H 36 #define _PROTOCOLS_DUMPRESTORE_H 37 38 #ifdef __cplusplus 39 extern "C" { 40 #endif 41 42 /* 43 * This header file defines two different versions of the 44 * ufsdump/ufsrestore interface. If the defined constant 45 * SUPPORTS_MTB_TAPE_FORMAT is set, the data structures in 46 * this header file will support backups of more than 2 terabytes 47 * of data. 48 * 49 * In the old format (the format that only supports dumps 50 * of less than 2 terabytes), TP_BSIZE is the size of file blocks 51 * on the dump tapes. 52 * Note that TP_BSIZE must be a multiple of DEV_BSIZE. 53 * 54 * In the new format, tp_bsize is used to store the 55 * tape block size, which is variable. The tape block size 56 * is like 'fragsize', in that 'c_tapea' in each tape record 57 * contains the 'tape block record' number in a signed int. 58 * We set TP_BSIZE_MAX to 65536, which will handle 128TB 59 * of data. The new format is indicated by a magic number 60 * in the tape header of MTB_MAGIC. The new format is only 61 * used when the size of the backup exceeds 2 TB. If the 62 * backup can be stored in less thatn 2 TB, ufsdump still 63 * uses the format indicated by the NFS_MAGIC magic number. 64 * Therefore, backups of less than 2 TB are still readable 65 * by earlier versions of ufsrestore. 66 * 67 * NTREC is the number of TP_BSIZE blocks that are written 68 * in each tape record. HIGHDENSITYTREC is the number of 69 * TP_BSIZE blocks that are written in each tape record on 70 * 6250 BPI or higher density tapes. CARTRIDGETREC is the 71 * number of TP_BSIZE (or tp_bsize) blocks that are written 72 * in each tape record on cartridge tapes. 73 * 74 * TP_NINDIR is the number of indirect pointers in a TS_INODE 75 * or TS_ADDR record. Note that it must be a power of two. 76 * 77 */ 78 #define TP_BSIZE_MAX 65536 79 #define TP_BSIZE_MIN 1024 80 #define ESIZE_SHIFT_MAX 6 /* shift TP_BSIZE_MIN to TP_BSIZE_MAX */ 81 82 #ifdef SUPPORTS_MTB_TAPE_FORMAT 83 #define TP_BUFSIZE TP_BSIZE_MAX 84 extern int32_t tp_bsize; 85 #else 86 #define TP_BSIZE 1024 87 #define TP_BUFSIZE TP_BSIZE 88 #endif /* SUPPORTS_MTB_TAPE_FORMAT */ 89 90 #define NTREC 10 91 #define HIGHDENSITYTREC 32 92 #define CARTRIDGETREC 63 93 #define TP_NINDIR (TP_BSIZE_MIN/2) 94 #define TP_NINOS (TP_NINDIR / sizeof (long)) 95 #define LBLSIZE 16 96 #define NAMELEN 64 97 98 #define OFS_MAGIC (int)60011 99 #define NFS_MAGIC (int)60012 100 #define MTB_MAGIC (int)60013 101 #define CHECKSUM (int)84446 102 103 union u_data { 104 char s_addrs[TP_NINDIR]; /* 1 => data; 0 => hole in inode */ 105 int32_t s_inos[TP_NINOS]; /* starting inodes on tape */ 106 }; 107 108 union u_shadow { 109 struct s_nonsh { 110 int32_t c_level; /* level of this dump */ 111 char c_filesys[NAMELEN]; /* dumpped file system name */ 112 char c_dev[NAMELEN]; /* name of dumpped device */ 113 char c_host[NAMELEN]; /* name of dumpped host */ 114 } c_nonsh; 115 char c_shadow[1]; 116 }; 117 118 /* if you change anything here, be sure to change normspcl in byteorder.c */ 119 120 extern union u_spcl { 121 char dummy[TP_BUFSIZE]; 122 struct s_spcl { 123 int32_t c_type; /* record type (see below) */ 124 time32_t c_date; /* date of previous dump */ 125 time32_t c_ddate; /* date of this dump */ 126 int32_t c_volume; /* dump volume number */ 127 daddr32_t c_tapea; /* logical block of this record */ 128 ino32_t c_inumber; /* number of inode */ 129 int32_t c_magic; /* magic number (see above) */ 130 int32_t c_checksum; /* record checksum */ 131 struct dinode c_dinode; /* ownership and mode of inode */ 132 int32_t c_count; /* number of valid c_addr entries */ 133 union u_data c_data; /* see union above */ 134 char c_label[LBLSIZE]; /* dump label */ 135 union u_shadow c_shadow; /* see union above */ 136 int32_t c_flags; /* additional information */ 137 int32_t c_firstrec; /* first record on volume */ 138 #ifdef SUPPORTS_MTB_TAPE_FORMAT 139 int32_t c_tpbsize; /* tape block size */ 140 int32_t c_spare[31]; /* reserved for future uses */ 141 #else 142 int32_t c_spare[32]; 143 #endif /* SUPPORTS_MTB_TAPE_FORMAT */ 144 } s_spcl; 145 } u_spcl; 146 #define spcl u_spcl.s_spcl 147 #define c_addr c_data.s_addrs 148 #define c_inos c_data.s_inos 149 #define c_level c_shadow.c_nonsh.c_level 150 #define c_filesys c_shadow.c_nonsh.c_filesys 151 #define c_dev c_shadow.c_nonsh.c_dev 152 #define c_host c_shadow.c_nonsh.c_host 153 154 /* 155 * special record types 156 */ 157 #define TS_TAPE 1 /* dump tape header */ 158 #define TS_INODE 2 /* beginning of file record */ 159 #define TS_ADDR 4 /* continuation of file record */ 160 #define TS_BITS 3 /* map of inodes on tape */ 161 #define TS_CLRI 6 /* map of inodes deleted since last dump */ 162 #define TS_END 5 /* end of volume marker */ 163 #define TS_EOM 7 /* floppy EOM - restore compat w/ old dump */ 164 165 /* 166 * flag values 167 */ 168 #define DR_NEWHEADER 1 /* new format tape header */ 169 #define DR_INODEINFO 2 /* header contains starting inode info */ 170 #define DR_REDUMP 4 /* dump contains recopies of active files */ 171 #define DR_TRUEINC 8 /* dump is a "true incremental" */ 172 #define DR_HASMETA 16 /* metadata in this header */ 173 174 175 176 #define DUMPOUTFMT "%-32s %c %s" /* for printf */ 177 /* name, incno, ctime(date) */ 178 #define DUMPINFMT "%258s %c %128[^\n]\n" /* inverse for scanf */ 179 180 #ifdef __cplusplus 181 } 182 #endif 183 184 #endif /* !_PROTOCOLS_DUMPRESTORE_H */ 185