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

     /*      $NetBSD: disklabel_gpt.h,v 1.1 2004/09/25 03:29:32 thorpej Exp $        */
     
     /*
      * Copyright (c) 2002 Marcel Moolenaar
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
     *
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     *
     * $FreeBSD: src/sys/sys/gpt.h,v 1.7 2004/08/02 18:46:52 marcel Exp $
     */
    
    #ifndef _SYS_GPT_H_
    #define _SYS_GPT_H_
    
    /*
     * Definitions for the EFI GUID Partition Table disk partitioning scheme.
     *
     * NOTE: As EFI is an Intel specification, all fields are stored in
     * little-endian byte-order.
     */
    
    /*
     * GUID Partition Table Header
     */
    struct gpt_hdr {
            int8_t          hdr_sig[8];     /* identifies GUID Partition Table */
            uint32_t        hdr_revision;   /* GPT specification revsion */
            uint32_t        hdr_size;       /* size of GPT Header */
            uint32_t        hdr_crc_self;   /* CRC32 of GPT Header */
            uint32_t        hdr__rsvd0;     /* must be zero */
            uint64_t        hdr_lba_self;   /* LBA that contains this Header */
            uint64_t        hdr_lba_alt;    /* LBA of backup GPT Header */
            uint64_t        hdr_lba_start;  /* first LBA usable for partitions */
            uint64_t        hdr_lba_end;    /* last LBA usable for partitions */
            uint8_t         hdr_guid[16];   /* GUID to identify the disk */
            uint64_t        hdr_lba_table;  /* first LBA of GPE array */
            uint32_t        hdr_entries;    /* number of entries in GPE array */
            uint32_t        hdr_entsz;      /* size of each GPE */
            uint32_t        hdr_crc_table;  /* CRC32 of GPE array */
            /*
             * The remainder of the block that contains the GPT Header
             * is reserved by EFI for future GPT Header expansion, and
             * must be zero.
             */
    };
    
    #define GPT_HDR_SIG             "EFI PART"
    #define GPT_HDR_REVISION        0x00010000      /* 1.0 */
    
    #define GPT_HDR_BLKNO           1
    
    /*
     * GUID Partition Entry
     */
    struct gpt_ent {
            uint8_t         ent_type[16];   /* partition type GUID */
            uint8_t         ent_guid[16];   /* unique partition GUID */
            uint64_t        ent_lba_start;  /* start of partition */
            uint64_t        ent_lba_end;    /* end of partition */
            uint64_t        ent_attr;       /* partition attributes */
            uint16_t        ent_name[36];   /* partition name in UNICODE-16 */
    };
    
    #define GPT_ENT_ATTR_PLATFORM   (1ULL << 0)     /* required for platform
                                                       to function */
    
    /*
     * Partition types defined by the EFI specification:
     *
     *      GPT_ENT_TYPE_UNUSED             Unused Entry
     *      GPT_ENT_TYPE_EFI                EFI System Partition
     *      GPT_ENT_TYPE_MBR                Partition containing legacy MBR
     */
    #define GPT_ENT_TYPE_UNUSED             \
            {0x00000000,0x0000,0x0000,0x00,0x00,{0x00,0x00,0x00,0x00,0x00,0x00}}
    #define GPT_ENT_TYPE_EFI                \
            {0xc12a7328,0xf81f,0x11d2,0xba,0x4b,{0x00,0xa0,0xc9,0x3e,0xc9,0x3b}}
    #define GPT_ENT_TYPE_MBR                \
            {0x024dee41,0x33e7,0x11d3,0x9d,0x69,{0x00,0x08,0xc7,0x81,0xf3,0x9f}}
    
   /*
    * Partition types defined by other operating systems.
    */
   #define GPT_ENT_TYPE_FREEBSD            \
           {0x516e7cb4,0x6ecf,0x11d6,0x8f,0xf8,{0x00,0x02,0x2d,0x09,0x71,0x2b}}
   #define GPT_ENT_TYPE_FREEBSD_SWAP       \
           {0x516e7cb5,0x6ecf,0x11d6,0x8f,0xf8,{0x00,0x02,0x2d,0x09,0x71,0x2b}}
   #define GPT_ENT_TYPE_FREEBSD_UFS        \
           {0x516e7cb6,0x6ecf,0x11d6,0x8f,0xf8,{0x00,0x02,0x2d,0x09,0x71,0x2b}}
   #define GPT_ENT_TYPE_FREEBSD_VINUM      \
           {0x516e7cb8,0x6ecf,0x11d6,0x8f,0xf8,{0x00,0x02,0x2d,0x09,0x71,0x2b}}
   /*
    * The following are unused but documented here to avoid reuse.
    *
    *      GPT_ENT_TYPE_FREEBSD_UFS2       \
    *      {0x516e7cb7,0x6ecf,0x11d6,0x8f,0xf8,{0x00,0x02,0x2d,0x09,0x71,0x2b}}
    */
   
   #define GPT_ENT_TYPE_MS_RESERVED        \
           {0xe3c9e316,0x0b5c,0x4db8,0x81,0x7d,{0xf9,0x2d,0xf0,0x02,0x15,0xae}}
   #define GPT_ENT_TYPE_MS_BASIC_DATA      \
           {0xebd0a0a2,0xb9e5,0x4433,0x87,0xc0,{0x68,0xb6,0xb7,0x26,0x99,0xc7}}
   #define GPT_ENT_TYPE_MS_LDM_METADATA    \
           {0x5808c8aa,0x7e8f,0x42e0,0x85,0xd2,{0xe1,0xe9,0x04,0x34,0xcf,0xb3}}
   #define GPT_ENT_TYPE_MS_LDM_DATA        \
           {0xaf9b60a0,0x1431,0x4f62,0xbc,0x68,{0x33,0x11,0x71,0x4a,0x69,0xad}}
   
   #define GPT_ENT_TYPE_LINUX_DATA         GPT_ENT_TYPE_MS_BASIC_DATA
   #define GPT_ENT_TYPE_LINUX_RAID         \
           {0xa19d880f,0x05fc,0x4d3b,0xa0,0x06,{0x74,0x3f,0x0f,0x84,0x91,0x1e}}
   #define GPT_ENT_TYPE_LINUX_SWAP         \
           {0x0657fd6d,0xa4ab,0x43c4,0x84,0xe5,{0x09,0x33,0xc8,0x4b,0x4f,0x4f}}
   #define GPT_ENT_TYPE_LINUX_LVM          \
           {0xe6d6d379,0xf507,0x44c2,0xa2,0x3c,{0x23,0x8f,0x2a,0x3d,0xf9,0x28}}
   
   #endif /* _SYS_GPT_H_ */

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