Trait FileSystemSync

pub trait FileSystemSync: FileSystem {
    // Required methods
    fn read(
        handle: *mut c_void,
        userdata: *mut c_void,
        buffer: FileBuffer<'_>,
    ) -> Result<()>;
    fn seek(
        handle: *mut c_void,
        userdata: *mut c_void,
        position: c_uint,
    ) -> Result<()>;
}

A synchronous filesystem.

You should prefer implementing this trait over FileSystemAsync- it’s a lot easier to do.

Required Methods

fn read( handle: *mut c_void, userdata: *mut c_void, buffer: FileBuffer<'_>, ) -> Result<()>

Callback for reading from a file.

If the callback is from System::attach_filesystem, then the return value is ignored.

If there is not enough data to read the requested number of bytes, return fewer bytes in the bytesread parameter and and return Error::FileEof.

fn seek( handle: *mut c_void, userdata: *mut c_void, position: c_uint, ) -> Result<()>

Callback for seeking within a file.

If the callback is from System::attach_filesystem, then the return value is ignored.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors