pub fn preadv( fd: RawFd, iov: &mut [IoSliceMut<'_>], offset: off_t, ) -> Result<usize>
Read from fd at offset filling buffers in iov.
fd
offset
iov
Buffers in iov will be filled in order until all buffers have been filled, no more bytes are available, or an error occurs. The file offset is not changed.
See also: readv and pread
readv
pread