/*
 *  ntloader  --  Microsoft Windows NT6+ loader
 *  Copyright (C) 2025  A1ive.
 *
 *  ntloader is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published
 *  by the Free Software Foundation, either version 3 of the License,
 *  or (at your option) any later version.
 *
 *  ntloader is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with ntloader.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef _FS_UUID_H
#define _FS_UUID_H 1

#include <stdint.h>

struct fat_bpb
{
  uint8_t jmp_boot[3];
  uint8_t oem_name[8];
  uint16_t bytes_per_sector;
  uint8_t sectors_per_cluster;
  uint16_t num_reserved_sectors;
  uint8_t num_fats;		/* 0x10 */
  uint16_t num_root_entries;
  uint16_t num_total_sectors_16;
  uint8_t media;			/* 0x15 */
  uint16_t sectors_per_fat_16;
  uint16_t sectors_per_track;	/* 0x18 */
  uint16_t num_heads;		/* 0x1A */
  uint32_t num_hidden_sectors;	/* 0x1C */
  uint32_t num_total_sectors_32;	/* 0x20 */
  union
  {
    struct
    {
      uint8_t num_ph_drive;
      uint8_t reserved;
      uint8_t boot_sig;
      uint32_t num_serial;
      uint8_t label[11];
      uint8_t fstype[8];
    } __attribute__ ((packed)) fat12_or_fat16;
    struct
    {
      uint32_t sectors_per_fat_32;
      uint16_t extended_flags;
      uint16_t fs_version;
      uint32_t root_cluster;
      uint16_t fs_info;
      uint16_t backup_boot_sector;
      uint8_t reserved[12];
      uint8_t num_ph_drive;
      uint8_t reserved1;
      uint8_t boot_sig;
      uint32_t num_serial;
      uint8_t label[11];
      uint8_t fstype[8];
    } __attribute__ ((packed)) fat32;
  } __attribute__ ((packed)) version;
} __attribute__ ((packed));

struct exfat_bpb
{
  uint8_t jmp_boot[3];
  uint8_t oem_name[8];
  uint8_t mbz[53];
  uint64_t num_hidden_sectors;
  uint64_t num_total_sectors;
  uint32_t num_reserved_sectors;
  uint32_t sectors_per_fat;
  uint32_t cluster_offset;
  uint32_t cluster_count;
  uint32_t root_cluster;
  uint32_t num_serial;
  uint16_t fs_revision;
  uint16_t volume_flags;
  uint8_t bytes_per_sector_shift;
  uint8_t sectors_per_cluster_shift;
  uint8_t num_fats;
  uint8_t num_ph_drive;
  uint8_t reserved[8];
} __attribute__ ((packed));

struct ntfs_bpb
{
  uint8_t jmp_boot[3];
  uint8_t oem_name[8];
  uint16_t bytes_per_sector;
  uint8_t sectors_per_cluster;
  uint8_t reserved_1[7];
  uint8_t media;
  uint16_t reserved_2;
  uint16_t sectors_per_track;
  uint16_t num_heads;
  uint32_t num_hidden_sectors;
  uint32_t reserved_3;
  uint8_t bios_drive;
  uint8_t reserved_4[3];
  uint64_t num_total_sectors;
  uint64_t mft_lcn;
  uint64_t mft_mirr_lcn;
  int8_t clusters_per_mft;
  int8_t reserved_5[3];
  int8_t clusters_per_index;
  int8_t reserved_6[3];
  uint64_t num_serial;
  uint32_t checksum;
} __attribute__ ((packed));

union volume_boot_record
{
  uint8_t raw[512];
  struct fat_bpb fat;
  struct exfat_bpb exfat;
  struct ntfs_bpb ntfs;
} __attribute__ ((packed));

#ifndef NTLOADER_UTIL
extern int check_fsuuid (void *disk, uint64_t lba, int (*disk_read)
              (void *disk, uint64_t sector, size_t len, void *buf));
#endif

#endif