zio-sendfile

Rust crate to provide a higher level abstraction over Linux's zero-copy I/O syscall: sendfile. This provides a significantly faster variant of io::copy(&mut source, &mut dest), which only works on Linux -- the platform of choice for the discerning programmer.

Examples

If you're simply copying a file to a different file descriptor, the copy function can be used:

extern crate zio_sendfile;

let mut source = File::open("source_path").unwrap();
let mut dest = File::create("dest_path").unwrap();

zio_sendfile::copy(&mut source, &mut dest);

If you need a more elaborate configuration, the builder pattern is possible using either the SendFile or SendFd types:

extern crate zio_sendfile;

let mut source = File::open("source_path").unwrap();
SendFile::new(&mut source)
    .count(bytes_to_copy)
    .offset(bytes_to_offset)
    .send(&mut File::create("dest_path").unwrap()).unwrap();