sys/sys/gpt.h

   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: src/sys/sys/gpt.h,v 1.10 2006/06/22 22:11:12 marcel Exp $
  27  * $DragonFly: src/sys/sys/gpt.h,v 1.2 2007/06/17 03:51:11 dillon Exp $
  28  */
  29
  30 #ifndef _SYS_GPT_H_
  31 #define _SYS_GPT_H_
  32
  33 #include <sys/uuid.h>
  34
  35 struct gpt_hdr {
  36         char            hdr_sig[8];
  37         uint32_t        hdr_revision;
  38         uint32_t        hdr_size;
  39         uint32_t        hdr_crc_self;
  40         uint32_t        __reserved;
  41         uint64_t        hdr_lba_self;
  42         uint64_t        hdr_lba_alt;
  43         uint64_t        hdr_lba_start;
  44         uint64_t        hdr_lba_end;
  45         struct uuid     hdr_uuid;
  46         uint64_t        hdr_lba_table;
  47         uint32_t        hdr_entries;
  48         uint32_t        hdr_entsz;
  49         uint32_t        hdr_crc_table;
  50         /*
  51          * The header as defined in the EFI spec is not a multiple of 8 bytes
  52          * and given that the alignment requirement is on an 8 byte boundary,
  53          * padding will happen. We make the padding explicit so that we can
  54          * correct the value returned by sizeof() when we put the size of the
  55          * header in field hdr_size, or otherwise use offsetof().
  56          */
  57         uint32_t        padding;
  58 };
  59
  60 #define GPT_MIN_HDR_SIZE        offsetof(struct gpt_hdr, padding)
  61 #define GPT_HDR_SIG             "EFI PART"
  62 #define GPT_HDR_REVISION        0x00010000
  63
  64 struct gpt_ent {
  65         struct uuid     ent_type;
  66         struct uuid     ent_uuid;
  67         uint64_t        ent_lba_start;
  68         uint64_t        ent_lba_end;
  69         uint64_t        ent_attr;
  70         uint16_t        ent_name[36];           /* UTF-16. */
  71 };
  72
  73 #define GPT_ENT_ATTR_PLATFORM           (1ULL << 0)
  74
  75 #define GPT_ENT_TYPE_UNUSED             \
  76         {0x00000000,0x0000,0x0000,0x00,0x00,{0x00,0x00,0x00,0x00,0x00,0x00}}
  77 #define GPT_ENT_TYPE_EFI                \
  78         {0xc12a7328,0xf81f,0x11d2,0xba,0x4b,{0x00,0xa0,0xc9,0x3e,0xc9,0x3b}}
  79 #define GPT_ENT_TYPE_MBR                \
  80         {0x024dee41,0x33e7,0x11d3,0x9d,0x69,{0x00,0x08,0xc7,0x81,0xf3,0x9f}}
  81 #define GPT_ENT_TYPE_FREEBSD            \
  82         {0x516e7cb4,0x6ecf,0x11d6,0x8f,0xf8,{0x00,0x02,0x2d,0x09,0x71,0x2b}}
  83 #define GPT_ENT_TYPE_FREEBSD_SWAP       \
  84         {0x516e7cb5,0x6ecf,0x11d6,0x8f,0xf8,{0x00,0x02,0x2d,0x09,0x71,0x2b}}
  85 #define GPT_ENT_TYPE_FREEBSD_UFS        \
  86         {0x516e7cb6,0x6ecf,0x11d6,0x8f,0xf8,{0x00,0x02,0x2d,0x09,0x71,0x2b}}
  87 #define GPT_ENT_TYPE_FREEBSD_VINUM      \
  88         {0x516e7cb8,0x6ecf,0x11d6,0x8f,0xf8,{0x00,0x02,0x2d,0x09,0x71,0x2b}}
  89
  90 /*
  91  * The following are unused but documented here to avoid reuse.
  92  *
  93  * GPT_ENT_TYPE_FREEBSD_UFS2    \
  94  *      {0x516e7cb7,0x6ecf,0x11d6,0x8f,0xf8,{0x00,0x02,0x2d,0x09,0x71,0x2b}}
  95  */
  96
  97 /*
  98  * Foreign partition types that we're likely to encounter. Note that Linux
  99  * apparently choose to share data partitions with MS. I don't what the
 100  * advantage might be. I can see how sharing swap partitions is advantaous
 101  * though.
 102  */
 103 #define GPT_ENT_TYPE_MS_RESERVED        \
 104         {0xe3c9e316,0x0b5c,0x4db8,0x81,0x7d,{0xf9,0x2d,0xf0,0x02,0x15,0xae}}
 105 #define GPT_ENT_TYPE_MS_BASIC_DATA      \
 106         {0xebd0a0a2,0xb9e5,0x4433,0x87,0xc0,{0x68,0xb6,0xb7,0x26,0x99,0xc7}}
 107 #define GPT_ENT_TYPE_MS_LDM_METADATA    \
 108         {0x5808c8aa,0x7e8f,0x42e0,0x85,0xd2,{0xe1,0xe9,0x04,0x34,0xcf,0xb3}}
 109 #define GPT_ENT_TYPE_MS_LDM_DATA        \
 110         {0xaf9b60a0,0x1431,0x4f62,0xbc,0x68,{0x33,0x11,0x71,0x4a,0x69,0xad}}
 111
 112 #define GPT_ENT_TYPE_LINUX_DATA         GPT_ENT_TYPE_MS_BASIC_DATA
 113 #define GPT_ENT_TYPE_LINUX_RAID         \
 114         {0xa19d880f,0x05fc,0x4d3b,0xa0,0x06,{0x74,0x3f,0x0f,0x84,0x91,0x1e}}
 115 #define GPT_ENT_TYPE_LINUX_SWAP         \
 116         {0x0657fd6d,0xa4ab,0x43c4,0x84,0xe5,{0x09,0x33,0xc8,0x4b,0x4f,0x4f}}
 117 #define GPT_ENT_TYPE_LINUX_LVM          \
 118         {0xe6d6d379,0xf507,0x44c2,0xa2,0x3c,{0x23,0x8f,0x2a,0x3d,0xf9,0x28}}
 119
 120 #define GPT_ENT_TYPE_APPLE_HFS          \
 121         {0x48465300,0x0000,0x11aa,0xaa,0x11,{0x00,0x30,0x65,0x43,0xec,0xac}}
 122
 123 #endif /* _SYS_GPT_H_ */