The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/sys/vtoc.h

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    1 /*-
    2  * Copyright (c) 2008 Marcel Moolenaar
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  *
    9  * 1. Redistributions of source code must retain the above copyright
   10  *    notice, this list of conditions and the following disclaimer.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  *
   15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   25  *
   26  * $FreeBSD: releng/7.3/sys/sys/vtoc.h 177283 2008-03-16 22:51:29Z marcel $
   27  */
   28 
   29 #ifndef _SYS_VTOC_H_
   30 #define _SYS_VTOC_H_
   31 
   32 #define VTOC_TAG_UNASSIGNED     0x00
   33 #define VTOC_TAG_BOOT           0x01
   34 #define VTOC_TAG_ROOT           0x02
   35 #define VTOC_TAG_SWAP           0x03
   36 #define VTOC_TAG_USR            0x04
   37 #define VTOC_TAG_BACKUP         0x05    /* "c" partition */
   38 #define VTOC_TAG_STAND          0x06
   39 #define VTOC_TAG_VAR            0x07
   40 #define VTOC_TAG_HOME           0x08
   41 #define VTOC_TAG_ALTSCTR        0x09    /* alternate sector partition */
   42 #define VTOC_TAG_CACHE          0x0a    /* Solaris cachefs partition */
   43 #define VTOC_TAG_VXVM_PUB       0x0e    /* VxVM public region */
   44 #define VTOC_TAG_VXVM_PRIV      0x0f    /* VxVM private region */
   45 
   46 /* NetBSD/mips defines this */
   47 #define VTOC_TAG_NETBSD_FFS     0xff
   48 
   49 /* FreeBSD tags: the high byte equals ELFOSABI_FREEBSD */
   50 #define VTOC_TAG_FREEBSD_SWAP   0x0901
   51 #define VTOC_TAG_FREEBSD_UFS    0x0902
   52 #define VTOC_TAG_FREEBSD_VINUM  0x0903
   53 #define VTOC_TAG_FREEBSD_ZFS    0x0904
   54 
   55 #define VTOC_FLAG_UNMNT         0x01    /* unmountable partition */
   56 #define VTOC_FLAG_RDONLY        0x10    /* partition is read/only */
   57 
   58 #define VTOC_ASCII_LEN  128
   59 #define VTOC_MAGIC      0xdabe
   60 #define VTOC_RAW_PART   2
   61 #define VTOC_SANITY     0x600ddeee
   62 #define VTOC_VERSION    1
   63 #define VTOC_VOLUME_LEN 8
   64 
   65 #define VTOC8_NPARTS    8
   66 
   67 struct vtoc8 {
   68         char            ascii[VTOC_ASCII_LEN];
   69         uint32_t        version;
   70         char            volume[VTOC_VOLUME_LEN];
   71         uint16_t        nparts;
   72         struct {
   73                 uint16_t        tag;
   74                 uint16_t        flag;
   75         } part[VTOC8_NPARTS];
   76         uint16_t        __alignment;
   77         uint32_t        bootinfo[3];
   78         uint32_t        sanity;
   79         uint32_t        reserved[10];
   80         uint32_t        timestamp[VTOC8_NPARTS];
   81         uint16_t        wskip;
   82         uint16_t        rskip;
   83         char            padding[152];
   84         uint16_t        rpm;
   85         uint16_t        physcyls;
   86         uint16_t        sparesecs;
   87         uint16_t        spare1[2];
   88         uint16_t        interleave;
   89         uint16_t        ncyls;
   90         uint16_t        altcyls;
   91         uint16_t        nheads;
   92         uint16_t        nsecs;
   93         uint16_t        spare2[2];
   94         struct {
   95                 uint32_t        cyl;
   96                 uint32_t        nblks;
   97         } map[VTOC8_NPARTS];
   98         uint16_t        magic;
   99         uint16_t        cksum;
  100 };
  101 
  102 #ifdef CTASSERT
  103 CTASSERT(sizeof(struct vtoc8) == 512);
  104 #endif
  105 
  106 #endif /* _SYS_VTOC_H_ */

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