# EasyFileSystem in easy_fs - Rust
An easy file system on block
Keywords: rust, rustlang, rust-lang, EasyFileSystem

# Struct easy_fs::EasyFileSystem

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

Expand description

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

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### impl EasyFileSystem

An easy fs over a block device

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

A data block of block size

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

Open a block device as a filesystem

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

Get the root inode of the filesystem

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

Get inode by id

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

Get data block by id

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#### pub fn alloc_inode(&mut self) -> u32

Allocate a new inode

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#### pub fn alloc_data(&mut self) -> u32

Allocate a data block

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

Deallocate a data block

## Auto Trait Implementations

### impl !RefUnwindSafe for EasyFileSystem

### impl Send for EasyFileSystem

### impl Sync for EasyFileSystem

### impl Unpin for EasyFileSystem

### impl !UnwindSafe for EasyFileSystem

## Blanket Implementations

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### impl<T> Any for T where
T: 'static + ?Sized,

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#### fn type_id(&self) -> TypeId

Gets the `TypeId` of `self`. Read more

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### impl<T> Borrow<T> for T where
T: ?Sized,

const: unstable · source

#### fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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### impl<T> BorrowMut<T> for T where
T: ?Sized,

const: unstable · source

#### fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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### impl<T> From<T> for T

const: unstable · source

#### fn from(t: T) -> T

Returns the argument unchanged.

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### impl<T, U> Into<U> for T where
U: From<T>,

const: unstable · source

#### fn into(self) -> U

Calls `U::from(self)`.

That is, this conversion is whatever the implementation of `From<T> for U` chooses to do.

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### impl<T, U> TryFrom<U> for T where
U: Into<T>,

#### type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

#### fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

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### impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

#### type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

const: unstable · source

#### fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.