bdpart.h

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/*
 * Copyright (c) 2009-2012 embedded brains GmbH.  All rights reserved.
 *
 *  embedded brains GmbH
 *  Obere Lagerstr. 30
 *  82178 Puchheim
 *  Germany
 *  <rtems@embedded-brains.de>
 *
 * The license and distribution terms for this file may be
 * found in the file LICENSE in this distribution or at
 * http://www.rtems.org/license/LICENSE.
 */

#ifndef RTEMS_BDPART_H
#define RTEMS_BDPART_H

#include <uuid/uuid.h>

#include <rtems.h>
#include <rtems/blkdev.h>

#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */

#define RTEMS_BDPART_MBR_EMPTY 0x0U

#define RTEMS_BDPART_MBR_FAT_12 0x1U

#define RTEMS_BDPART_MBR_FAT_16 0x4U

#define RTEMS_BDPART_MBR_FAT_16_LBA 0xeU

#define RTEMS_BDPART_MBR_FAT_32 0xbU

#define RTEMS_BDPART_MBR_FAT_32_LBA 0xcU

#define RTEMS_BDPART_MBR_EXTENDED 0x5U

#define RTEMS_BDPART_MBR_DATA 0xdaU

#define RTEMS_BDPART_MBR_GPT 0xeeU

#define RTEMS_BDPART_MBR_FLAG_ACTIVE 0x80U

#define RTEMS_BDPART_PARTITION_NUMBER_HINT 16

typedef struct rtems_bdpart_partition {
  rtems_blkdev_bnum begin;

  rtems_blkdev_bnum end;

  uuid_t type;

  uuid_t id;

  uint64_t flags;
} rtems_bdpart_partition;

typedef enum {
  RTEMS_BDPART_FORMAT_MBR,

  RTEMS_BDPART_FORMAT_GPT
} rtems_bdpart_format_type;

typedef union {
  rtems_bdpart_format_type type;

  struct {
    rtems_bdpart_format_type type;

    uint32_t disk_id;

    bool dos_compatibility;
  } mbr;

  struct {
    rtems_bdpart_format_type type;

    uuid_t disk_id;
  } gpt;
} rtems_bdpart_format;

rtems_status_code rtems_bdpart_read(
  const char *disk_name,
  rtems_bdpart_format *format,
  rtems_bdpart_partition *partitions,
  size_t *count
);

void rtems_bdpart_sort( rtems_bdpart_partition *partitions, size_t count);

rtems_status_code rtems_bdpart_write(
  const char *disk_name,
  const rtems_bdpart_format *format,
  const rtems_bdpart_partition *partitions,
  size_t count
);

rtems_status_code rtems_bdpart_create(
  const char *disk_name,
  const rtems_bdpart_format *format,
  rtems_bdpart_partition *partitions,
  const unsigned *distribution,
  size_t count
);

rtems_status_code rtems_bdpart_register(
  const char *disk_name,
  const rtems_bdpart_partition *partitions,
  size_t count
);

rtems_status_code rtems_bdpart_register_from_disk( const char *disk_name);

rtems_status_code rtems_bdpart_unregister(
  const char *disk_name,
  const rtems_bdpart_partition *partitions,
  size_t count
);

rtems_status_code rtems_bdpart_mount(
  const char *disk_name,
  const rtems_bdpart_partition *partitions,
  size_t count,
  const char *mount_base
);

rtems_status_code rtems_bdpart_unmount(
  const char *disk_name,
  const rtems_bdpart_partition *partitions,
  size_t count,
  const char *mount_base
);

void rtems_bdpart_dump( const rtems_bdpart_partition *partitions, size_t count);

void rtems_bdpart_to_partition_type( uint8_t mbr_type, uuid_t type);

bool rtems_bdpart_to_mbr_partition_type(
  const uuid_t type,
  uint8_t *mbr_type
);

#define RTEMS_BDPART_MBR_CYLINDER_SIZE 63

#define RTEMS_BDPART_NUMBER_SIZE 4

#define RTEMS_BDPART_BLOCK_SIZE 512

#define RTEMS_BDPART_MBR_TABLE_ENTRY_SIZE 16

#define RTEMS_BDPART_MBR_OFFSET_TABLE_0 446

#define RTEMS_BDPART_MBR_OFFSET_TABLE_1 \
  (RTEMS_BDPART_MBR_OFFSET_TABLE_0 + RTEMS_BDPART_MBR_TABLE_ENTRY_SIZE)

#define RTEMS_BDPART_MBR_OFFSET_DISK_ID 440

#define RTEMS_BDPART_MBR_OFFSET_SIGNATURE_0 510

#define RTEMS_BDPART_MBR_OFFSET_SIGNATURE_1 511

#define RTEMS_BDPART_MBR_SIGNATURE_0 0x55U

#define RTEMS_BDPART_MBR_SIGNATURE_1 0xaaU

#define RTEMS_BDPART_MBR_OFFSET_BEGIN 8

#define RTEMS_BDPART_MBR_OFFSET_SIZE 12

#define RTEMS_BDPART_MBR_OFFSET_TYPE 4

#define RTEMS_BDPART_MBR_OFFSET_FLAGS 0

static inline uint8_t rtems_bdpart_mbr_partition_type(
  const uuid_t type
)
{
  return type [0];
}

rtems_status_code rtems_bdpart_get_disk_data(
  const char *disk_name,
  int *fd_ptr,
  rtems_disk_device **dd_ptr,
  rtems_blkdev_bnum *disk_end
);

#ifdef __cplusplus
}
#endif /* __cplusplus */

#endif /* RTEMS_BDPART_H */