Function rustix::io::read_uninit

pub fn read_uninit<Fd: AsFd>(
    fd: Fd,
    buf: &mut [MaybeUninit<u8>]
) -> Result<(&mut [u8], &mut [MaybeUninit<u8>])>

read(fd, buf)—Reads from a stream.

This is equivalent to read, except that it can read into uninitialized memory. It returns the slice that was initialized by this function and the slice that remains uninitialized.