compat/include/protocols/dumprestore.h

   1 /*
   2  *      Ported to Linux's Second Extended File System as part of the
   3  *      dump and restore backup suit
   4  *      Remy Card <card@Linux.EU.Org>, 1994-1997
   5  *      Stelian Pop <pop@cybercable.fr>, 1999
   6  *
   7  */
   8
   9 /*
  10  * Copyright (c) 1980, 1993
  11  *      The Regents of the University of California.  All rights reserved.
  12  * (c) UNIX System Laboratories, Inc.
  13  * All or some portions of this file are derived from material licensed
  14  * to the University of California by American Telephone and Telegraph
  15  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
  16  * the permission of UNIX System Laboratories, Inc.
  17  *
  18  * Redistribution and use in source and binary forms, with or without
  19  * modification, are permitted provided that the following conditions
  20  * are met:
  21  * 1. Redistributions of source code must retain the above copyright
  22  *    notice, this list of conditions and the following disclaimer.
  23  * 2. Redistributions in binary form must reproduce the above copyright
  24  *    notice, this list of conditions and the following disclaimer in the
  25  *    documentation and/or other materials provided with the distribution.
  26  * 3. All advertising materials mentioning features or use of this software
  27  *    must display the following acknowledgement:
  28  *      This product includes software developed by the University of
  29  *      California, Berkeley and its contributors.
  30  * 4. Neither the name of the University nor the names of its contributors
  31  *    may be used to endorse or promote products derived from this software
  32  *    without specific prior written permission.
  33  *
  34  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  35  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  36  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  37  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  38  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  39  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  40  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  41  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  42  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  43  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  44  * SUCH DAMAGE.
  45  *
  46  * $Id: dumprestore.h,v 1.5 2000/01/08 10:00:41 tiniou Exp $
  47  */
  48
  49 #ifndef _PROTOCOLS_DUMPRESTORE_H_
  50 #define _PROTOCOLS_DUMPRESTORE_H_
  51
  52 /*
  53  * TP_BSIZE is the size of file blocks on the dump tapes.
  54  * Note that TP_BSIZE must be a multiple of DEV_BSIZE.
  55  *
  56  * NTREC is the number of TP_BSIZE blocks that are written
  57  * in each tape record. HIGHDENSITYTREC is the number of
  58  * TP_BSIZE blocks that are written in each tape record on
  59  * 6250 BPI or higher density tapes.
  60  *
  61  * TP_NINDIR is the number of indirect pointers in a TS_INODE
  62  * or TS_ADDR record. Note that it must be a power of two.
  63  */
  64 #define TP_BSIZE        1024
  65 #define NTREC           10
  66 #define HIGHDENSITYTREC 32
  67 #define TP_NINDIR       (TP_BSIZE/2)
  68 #define LBLSIZE         16
  69 #define NAMELEN         64
  70
  71 #define OFS_MAGIC       (int)60011
  72 #define NFS_MAGIC       (int)60012
  73 #define CHECKSUM        (int)84446
  74
  75 union u_spcl {
  76         char dummy[TP_BSIZE];
  77         struct  s_spcl {
  78                 int32_t c_type;             /* record type (see below) */
  79                 int32_t c_date;             /* date of this dump */
  80                 int32_t c_ddate;            /* date of previous dump */
  81                 int32_t c_volume;           /* dump volume number */
  82                 daddr_t c_tapea;            /* logical block of this record */
  83                 ino_t   c_inumber;          /* number of inode */
  84                 int32_t c_magic;            /* magic number (see above) */
  85                 int32_t c_checksum;         /* record checksum */
  86 #ifdef  __linux__
  87                 struct  new_bsd_inode c_dinode;
  88 #else
  89                 struct  dinode  c_dinode;   /* ownership and mode of inode */
  90 #endif
  91                 int32_t c_count;            /* number of valid c_addr entries */
  92                 char    c_addr[TP_NINDIR];  /* 1 => data; 0 => hole in inode */
  93                 char    c_label[LBLSIZE];   /* dump label */
  94                 int32_t c_level;            /* level of this dump */
  95                 char    c_filesys[NAMELEN]; /* name of dumpped file system */
  96                 char    c_dev[NAMELEN];     /* name of dumpped device */
  97                 char    c_host[NAMELEN];    /* name of dumpped host */
  98                 int32_t c_flags;            /* additional information */
  99                 int32_t c_firstrec;         /* first record on volume */
 100                 int32_t c_spare[32];        /* reserved for future uses */
 101         } s_spcl;
 102 } u_spcl;
 103 #define spcl u_spcl.s_spcl
 104 /*
 105  * special record types
 106  */
 107 #define TS_TAPE         1       /* dump tape header */
 108 #define TS_INODE        2       /* beginning of file record */
 109 #define TS_ADDR         4       /* continuation of file record */
 110 #define TS_BITS         3       /* map of inodes on tape */
 111 #define TS_CLRI         6       /* map of inodes deleted since last dump */
 112 #define TS_END          5       /* end of volume marker */
 113
 114 /*
 115  * flag values
 116  */
 117 #define DR_NEWHEADER    0x0001  /* new format tape header */
 118 #define DR_NEWINODEFMT  0x0002  /* new format inodes on tape */
 119
 120 #endif /* !_DUMPRESTORE_H_ */