source: mainline/uspace/lib/label/include/std/gpt.h@ 8d2dd7f2

/*
 * Copyright (c) 2015 Jiri Svoboda
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - 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.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * 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.
 */

/** @addtogroup bd
 * @{
 */
/** @file
 */

#ifndef LIBLABEL_STD_GPT_H_
#define LIBLABEL_STD_GPT_H_

#include <stdint.h>

enum {
        /** Block address of primary GPT header. */
        gpt_hdr_ba = 1,

        /** Minimum size of partition table in bytes, required by std. */
        gpt_ptable_min_size = 16384,

        /** GPT revision */
        gpt_revision = 0x00010000
};

/** GPT header */
typedef struct {
        uint8_t efi_signature[8];
        uint32_t revision;
        uint32_t header_size;
        uint32_t header_crc32;
        uint32_t reserved;
        uint64_t my_lba;
        uint64_t alternate_lba;
        uint64_t first_usable_lba;
        uint64_t last_usable_lba;
        uint8_t disk_guid[16];
        uint64_t entry_lba;
        uint32_t num_entries;
        uint32_t entry_size;
        uint32_t pe_array_crc32;
} __attribute__((packed)) gpt_header_t;

/** GPT partition entry */
typedef struct {
        uint8_t part_type[16];
        uint8_t part_id[16];
        uint64_t start_lba;
        uint64_t end_lba;
        uint64_t attributes;
        uint16_t part_name[36];
} __attribute__((packed)) gpt_entry_t;

/** Microsoft Basic Data Partition */
#define GPT_MS_BASIC_DATA "EBD0A0A2-B9E5-4433-87C0-68B6B72699C7"
/** Linux Filesystem Data */
#define GPT_LINUX_FS_DATA "0FC63DAF-8483-4772-8E79-3D69D8477DE4"
/** I could not find any definition of Minix GUID partition type.
 * This is a randomly generated UUID */
#define GPT_MINIX_FAKE "8308e350-4e2d-46c7-8e3b-24b07e8ac674"

#endif

/** @}
 */