Trait avrox_storage::fs::FileSystemWrite

pub trait FileSystemWrite: FileSystemRead {
    // Required methods
    fn open<P: Into<Self::FID>>(
        &self,
        path: P,
        options: &OpenOptions
    ) -> OxideResult<File<'_, Self>, IoError>
       where Self: Sized;
    fn create_file(&self, file: Self::FID) -> OxideResult<(), IoError>;
    fn write_at_location(
        &self,
        file: Self::FID,
        block: BlockNumber,
        offset: usize,
        buf: &[u8]
    ) -> FileSystemResult<(usize, (BlockNumber, usize))>;
    fn truncate_at(
        &self,
        file: Self::FID,
        block: BlockNumber,
        offset: usize
    ) -> FileSystemResult<()>;
    fn remove_file(&self, file: Self::FID) -> FileSystemResult<()>;
    fn sync(&self) -> FileSystemResult<()>;
}

Required Methods

fn open<P: Into<Self::FID>>( &self, path: P, options: &OpenOptions ) -> OxideResult<File<'_, Self>, IoError>

where Self: Sized,

Open or create the identified file with the options given. See the OpenOptions documentation for further details.

fn create_file(&self, file: Self::FID) -> OxideResult<(), IoError>

Create the given file, with zero length

fn write_at_location( &self, file: Self::FID, block: BlockNumber, offset: usize, buf: &[u8] ) -> FileSystemResult<(usize, (BlockNumber, usize))>

Write from the given buffer to the given file location. The number of bytes written, and the new location at the end of the last write, are returned.

This method does not guarantee to write all the bytes requested, you must pay attention to the number of bytes written returned.

fn truncate_at( &self, file: Self::FID, block: BlockNumber, offset: usize ) -> FileSystemResult<()>

Truncate the given file so the location given points to the end of the file. All remaining space is freed for re-allocation.

fn remove_file(&self, file: Self::FID) -> FileSystemResult<()>

Delete the given file. The directory entry and all space associated with the file is freed for reallocation.

fn sync(&self) -> FileSystemResult<()>

Sync all data to the underlying storage

Object Safety

This trait is not object safe.

Implementors

impl<SD> FileSystemWrite for SnafusFileSystem<SD>

where SD: Storage + RandomRead + RandomWrite,