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#pragma once
#include <cstdint>
#include <drivers/disk.hpp>
#include <generic/lock/mutex.hpp>
//#define EXT2_ORANGE_TRACE
#define EXT4_FEATURE_INCOMPAT_64BIT 0x0080
#define EXT2_FEATURE_RO_COMPAT_LARGE_FILE 0x0002
#define EXT4_FEATURE_INCOMPAT_EXTENTS 0x0040
#include <stdint.h>
struct ext2_superblock {
uint32_t s_inodes_count;
uint32_t s_blocks_count;
uint32_t s_r_blocks_count;
uint32_t s_free_blocks_count;
uint32_t s_free_inodes_count;
uint32_t s_first_data_block;
uint32_t s_log_block_size;
uint32_t s_log_frag_size;
uint32_t s_blocks_per_group;
uint32_t s_frags_per_group;
uint32_t s_inodes_per_group;
uint32_t s_mtime;
uint32_t s_wtime;
uint16_t s_mnt_count;
uint16_t s_max_mnt_count;
uint16_t s_magic;
uint16_t s_state;
uint16_t s_errors;
uint16_t s_minor_rev_level;
uint32_t s_lastcheck;
uint32_t s_checkinterval;
uint32_t s_creator_os;
uint32_t revision;
uint16_t s_def_resuid;
uint16_t s_def_resgid;
uint32_t s_first_ino;
uint16_t inode_size;
uint16_t s_block_group_nr;
uint32_t s_feature_compat;
uint32_t s_feature_incompat;
uint32_t s_feature_ro_compat;
uint8_t s_uuid[16];
char s_volume_name[16];
char s_last_mounted[64];
uint32_t s_algo_bitmap;
uint8_t s_prealloc_blocks;
uint8_t s_prealloc_dir_blocks;
uint16_t s_reserved_gdt_blocks;
uint8_t s_journal_uuid[16];
uint32_t s_journal_inum;
uint32_t s_journal_dev;
uint32_t s_last_orphan;
uint32_t s_hash_seed[4];
uint8_t s_def_hash_version;
uint8_t s_jnl_backup_type;
uint16_t s_desc_size;
uint32_t s_default_mount_opts;
uint32_t s_first_meta_bg;
uint32_t s_mkfs_time;
uint32_t s_jnl_blocks[17];
uint32_t s_blocks_count_hi;
uint32_t s_r_blocks_count_hi;
uint32_t s_free_blocks_count_hi;
} __attribute__((packed));
struct ext2_group_desc {
uint32_t bg_block_bitmap;
uint32_t bg_inode_bitmap;
uint32_t bg_inode_table;
uint16_t bg_free_blocks_count;
uint16_t bg_free_inodes_count;
uint16_t bg_used_dirs_count;
uint16_t bg_pad;
uint32_t bg_reserved[3];
};
struct ext2_inode {
uint16_t i_mode;
uint16_t i_uid;
uint32_t i_size;
uint32_t i_atime;
uint32_t i_ctime;
uint32_t i_mtime;
uint32_t i_dtime;
uint16_t i_gid;
uint16_t i_links_count;
uint32_t i_blocks;
uint32_t i_flags;
uint32_t i_osd1;
uint32_t i_block[15];
uint32_t i_generation;
uint32_t i_file_acl;
uint32_t i_dir_acl;
uint32_t i_faddr;
uint32_t i_osd2[3];
};
#define EXT2_S_IFMT 0xF000
#define EXT2_S_IFLNK 0xA000
#define EXT2_S_IFDIR 0040000
struct ext2_dir_entry {
uint32_t inode;
uint16_t rec_len;
uint8_t name_len;
uint8_t file_type;
char name[];
};
struct ext2_partition {
std::uint64_t lba_start;
ext2_superblock* sb;
void* cached_group;
locks::mutex lock;
disk* target_disk;
char* temp_buffer2;
char* buffer;
};
struct ext4_extent_header {
uint16_t eh_magic;
uint16_t eh_entries;
uint16_t eh_max;
uint16_t eh_depth;
uint32_t eh_generation;
};
struct ext4_extent {
uint32_t ee_block;
uint16_t ee_len;
uint16_t ee_start_hi;
uint32_t ee_start_lo;
};
struct ext4_extent_idx {
uint32_t ei_block;
uint32_t ei_leaf_lo;
uint16_t ei_leaf_hi;
uint16_t ei_unused;
};
#define EXT2_MAGIC 0xEF53
namespace drivers {
namespace ext2 {
void init(disk* target_disk, std::uint64_t lba_start);
}
}
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