Struct Superblock 

pub struct Superblock {
    pub magic: [u8; 4],
    pub version: u32,
    pub root_inode: InodeId,
    pub next_inode: InodeId,
    pub next_block: BlockId,
    pub total_inodes: u64,
    pub total_blocks: u64,
    pub block_size: u32,
    pub created_us: u64,
    pub mounted_us: u64,
    pub label: String,
}

Superblock - filesystem metadata

Fields

magic: [u8; 4]

Magic number for identification

version: u32

Filesystem version

root_inode: InodeId

Root inode number

next_inode: InodeId

Next free inode number

next_block: BlockId

Next free block number

total_inodes: u64

Total inodes allocated

total_blocks: u64

Total blocks used

block_size: u32

Block size in bytes

created_us: u64

Creation time

mounted_us: u64

Last mount time

label: String

Filesystem label

Implementations

impl Superblock

pub const MAGIC: [u8; 4]

pub const VERSION: u32 = 1

pub const DEFAULT_BLOCK_SIZE: u32 = 4096

pub fn new(label: impl Into<String>) -> Self

pub fn alloc_inode(&mut self) -> InodeId

Allocate a new inode number

pub fn alloc_blocks(&mut self, count: u64) -> Vec<BlockId>

Allocate block numbers

pub fn to_bytes(&self) -> Result<Vec<u8>, String>

Serialize to bytes

pub fn from_bytes(data: &[u8]) -> Result<Self, String>

Deserialize from bytes

Trait Implementations

impl Clone for Superblock

fn clone(&self) -> Superblock

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Superblock

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Superblock

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for Superblock

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.