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/gpt.h

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    1 /*-
    2  * Copyright (c) 2002 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  * $FreeBSD$
   27  */
   28 
   29 #ifndef _SYS_GPT_H_
   30 #define _SYS_GPT_H_
   31 
   32 #include <sys/uuid.h>
   33 
   34 struct gpt_hdr {
   35         char            hdr_sig[8];
   36 #define GPT_HDR_SIG             "EFI PART"
   37         uint32_t        hdr_revision;
   38 #define GPT_HDR_REVISION        0x00010000
   39         uint32_t        hdr_size;
   40         uint32_t        hdr_crc_self;
   41         uint32_t        __reserved;
   42         uint64_t        hdr_lba_self;
   43         uint64_t        hdr_lba_alt;
   44         uint64_t        hdr_lba_start;
   45         uint64_t        hdr_lba_end;
   46         struct uuid     hdr_uuid;
   47         uint64_t        hdr_lba_table;
   48         uint32_t        hdr_entries;
   49         uint32_t        hdr_entsz;
   50         uint32_t        hdr_crc_table;
   51         /*
   52          * The header as defined in the EFI spec is not a multiple of 8 bytes
   53          * and given that the alignment requirement is on an 8 byte boundary,
   54          * padding will happen. We make the padding explicit so that we can
   55          * correct the value returned by sizeof() when we put the size of the
   56          * header in field hdr_size, or otherwise use offsetof().
   57          */
   58         uint32_t        padding;
   59 };
   60 
   61 struct gpt_ent {
   62         struct uuid     ent_type;
   63         struct uuid     ent_uuid;
   64         uint64_t        ent_lba_start;
   65         uint64_t        ent_lba_end;
   66         uint64_t        ent_attr;
   67 #define GPT_ENT_ATTR_PLATFORM           (1ULL << 0)
   68         short           ent_name[36];           /* UNICODE-16. */
   69 };
   70 
   71 #define GPT_ENT_TYPE_UNUSED             \
   72         {0x00000000,0x0000,0x0000,0x00,0x00,{0x00,0x00,0x00,0x00,0x00,0x00}}
   73 #define GPT_ENT_TYPE_EFI                \
   74         {0xc12a7328,0xf81f,0x11d2,0xba,0x4b,{0x00,0xa0,0xc9,0x3e,0xc9,0x3b}}
   75 #define GPT_ENT_TYPE_MBR                \
   76         {0x024dee41,0x33e7,0x11d3,0x9d,0x69,{0x00,0x08,0xc7,0x81,0xf3,0x9f}}
   77 #define GPT_ENT_TYPE_FREEBSD            \
   78         {0x516e7cb4,0x6ecf,0x11d6,0x8f,0xf8,{0x00,0x02,0x2d,0x09,0x71,0x2b}}
   79 #define GPT_ENT_TYPE_FREEBSD_SWAP       \
   80         {0x516e7cb5,0x6ecf,0x11d6,0x8f,0xf8,{0x00,0x02,0x2d,0x09,0x71,0x2b}}
   81 #define GPT_ENT_TYPE_FREEBSD_UFS        \
   82         {0x516e7cb6,0x6ecf,0x11d6,0x8f,0xf8,{0x00,0x02,0x2d,0x09,0x71,0x2b}}
   83 #define GPT_ENT_TYPE_FREEBSD_VINUM      \
   84         {0x516e7cb8,0x6ecf,0x11d6,0x8f,0xf8,{0x00,0x02,0x2d,0x09,0x71,0x2b}}
   85 
   86 /*
   87  * The following are unused but documented here to avoid reuse.
   88  *
   89  * GPT_ENT_TYPE_FREEBSD_UFS2    \
   90  *      {0x516e7cb7,0x6ecf,0x11d6,0x8f,0xf8,{0x00,0x02,0x2d,0x09,0x71,0x2b}}
   91  */
   92 
   93 /*
   94  * Foreign partition types that we're likely to encounter. Note that Linux
   95  * apparently choose to share data partitions with MS. I don't what the
   96  * advantage might be. I can see how sharing swap partitions is advantaous
   97  * though.
   98  */
   99 #define GPT_ENT_TYPE_MS_RESERVED        \
  100         {0xe3c9e316,0x0b5c,0x4db8,0x81,0x7d,{0xf9,0x2d,0xf0,0x02,0x15,0xae}}
  101 #define GPT_ENT_TYPE_MS_BASIC_DATA      \
  102         {0xebd0a0a2,0xb9e5,0x4433,0x87,0xc0,{0x68,0xb6,0xb7,0x26,0x99,0xc7}}
  103 #define GPT_ENT_TYPE_MS_LDM_METADATA    \
  104         {0x5808c8aa,0x7e8f,0x42e0,0x85,0xd2,{0xe1,0xe9,0x04,0x34,0xcf,0xb3}}
  105 #define GPT_ENT_TYPE_MS_LDM_DATA        \
  106         {0xaf9b60a0,0x1431,0x4f62,0xbc,0x68,{0x33,0x11,0x71,0x4a,0x69,0xad}}
  107 
  108 #define GPT_ENT_TYPE_LINUX_DATA         GPT_ENT_TYPE_MS_BASIC_DATA
  109 #define GPT_ENT_TYPE_LINUX_RAID         \
  110         {0xa19d880f,0x05fc,0x4d3b,0xa0,0x06,{0x74,0x3f,0x0f,0x84,0x91,0x1e}}
  111 #define GPT_ENT_TYPE_LINUX_SWAP         \
  112         {0x0657fd6d,0xa4ab,0x43c4,0x84,0xe5,{0x09,0x33,0xc8,0x4b,0x4f,0x4f}}
  113 #define GPT_ENT_TYPE_LINUX_LVM          \
  114         {0xe6d6d379,0xf507,0x44c2,0xa2,0x3c,{0x23,0x8f,0x2a,0x3d,0xf9,0x28}}
  115 
  116 #endif /* _SYS_GPT_H_ */

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