Struct EasyFileSystem 

pub struct EasyFileSystem {
    pub block_device: Arc<dyn BlockDevice>,
    pub inode_bitmap: Bitmap,
    pub data_bitmap: Bitmap,
    /* private fields */
}

An easy file system on block

Fields

block_device: Arc<dyn BlockDevice>

Real device

inode_bitmap: Bitmap

Inode bitmap

data_bitmap: Bitmap

Data bitmap

Implementations

impl EasyFileSystem

An easy fs over a block device

pub fn create( block_device: Arc<dyn BlockDevice>, total_blocks: u32, inode_bitmap_blocks: u32, ) -> Arc<Mutex<Self>>

A data block of block size

pub fn open(block_device: Arc<dyn BlockDevice>) -> Arc<Mutex<Self>>

Open a block device as a filesystem

pub fn root_inode(efs: &Arc<Mutex<Self>>) -> Inode

Get the root inode of the filesystem

pub fn get_disk_inode_pos(&self, inode_id: u32) -> (u32, usize)

Get inode by id

pub fn get_data_block_id(&self, data_block_id: u32) -> u32

Get data block by id

pub fn alloc_inode(&mut self) -> u32

Allocate a new inode

pub fn alloc_data(&mut self) -> u32

Allocate a data block

pub fn dealloc_data(&mut self, block_id: u32)

Deallocate a data block