Trait FileSystem

Source

pub trait FileSystem: Send + Sync {
Show 15 methods    // Required methods
    fn kind(&self) -> FsKind;
    fn root(&self) -> FileId;
    fn sector_sizes(&self) -> SectorSizes;
    fn timestamp_zone(&self) -> TimeZonePolicy;
    fn read_dir(&self, ino: FileId) -> VfsResult<DirStream>;
    fn extents(&self, ino: FileId, stream: StreamId) -> VfsResult<ExtentStream>;
    fn lookup(&self, parent: FileId, name: &[u8]) -> VfsResult<Option<FileId>>;
    fn meta(&self, ino: FileId) -> VfsResult<FsMeta>;
    fn read_at(
        &self,
        ino: FileId,
        stream: StreamId,
        off: u64,
        buf: &mut [u8],
    ) -> VfsResult<usize>;
    fn read_link(&self, ino: FileId, cap: usize) -> VfsResult<Vec<u8>>;
    fn deleted(&self) -> VfsResult<NodeStream>;
    fn unallocated(&self) -> VfsResult<ExtentStream>;

    // Provided methods
    fn data_streams(&self, ino: FileId) -> VfsResult<Vec<StreamInfo>> { ... }
    fn hardlinks(&self, ino: FileId) -> VfsResult<Vec<HardLink>> { ... }
    fn slack(&self, ino: FileId, stream: StreamId) -> VfsResult<Option<ByteRun>> { ... }
}

Expand description

One mounted, read-only filesystem. Inode-addressed; &self reads share one handle across workers; internal caches use interior mutability, never &mut self.