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[victoriafalls] Add an Ext2Driver class which probes the superblock.

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Drew Galbraith 2023-07-05 22:56:08 -07:00
parent 0274339cc9
commit a49d13f1d1
5 changed files with 145 additions and 12 deletions
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62
sys/victoriafalls/fs/ext2/ext2.h Normal file
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#pragma once
#include <stdint.h>
struct Superblock {
uint32_t inodes_count;
uint32_t blocks_count;
uint32_t reserved_blocks_count;
uint32_t free_blocks_count;
uint32_t free_inodes_count;
uint32_t first_data_blok;
uint32_t log_block_size;
uint32_t log_frag_size;
uint32_t blocks_per_group;
uint32_t frags_per_group;
uint32_t inodes_per_group;
uint32_t mtime;
uint32_t wtime;
uint16_t mnt_count;
uint16_t max_mnt_count;
uint16_t magic;
uint16_t state;
uint16_t errors;
uint16_t minor_rev_level;
uint32_t lastcheck;
uint32_t checkinterval;
uint32_t creator_os;
uint32_t rev_level;
uint16_t def_resuid;
uint16_t def_resgid;
} __attribute__((__packed__));
struct BlockGroupDescriptor {
uint32_t block_bitmap;
uint32_t inode_bitmap;
uint32_t inode_table;
uint16_t free_blocks_count;
uint16_t free_inodes_count;
uint16_t used_dirs_count;
uint8_t reserved[14];
} __attribute__((__packed__));
struct Inode {
uint16_t mode;
uint16_t uid;
uint32_t size;
uint32_t atime;
uint32_t ctime;
uint32_t mtime;
uint32_t dtime;
uint16_t gid;
uint16_t links_count;
uint32_t blocks;
uint32_t flags;
uint32_t osd1;
uint32_t block[15];
uint32_t generation;
uint32_t file_acl;
uint32_t dir_acl;
uint32_t faddr;
uint32_t osd2[3];
} __attribute__((__packed__));