pub fn splice<FdIn: AsFd, FdOut: AsFd>(
fd_in: FdIn,
off_in: Option<&mut u64>,
fd_out: FdOut,
off_out: Option<&mut u64>,
len: usize,
flags: SpliceFlags
) -> Result<usize>
Expand description
splice(fd_in, off_in, fd_out, off_out, len, flags)
—Transfer data between
a file and a pipe.
This function transfers up to len
bytes of data from the file descriptor
fd_in
to the file descriptor fd_out
, where one of the file descriptors
must refer to a pipe.
off_*
must be None
if the corresponding fd refers to a pipe.
Otherwise its value points to the starting offset to the file,
from which the data is read/written.
on success the number of bytes read/written is added to the offset.
passing None
causes the read/write to start from the file offset,
and the file offset is adjusted appropriately.