Function splice

src/backend/linux_raw/pipe/syscalls.rs:60–79

(
    fd_in: BorrowedFd<'_>,
    off_in: Option<&mut u64>,
    fd_out: BorrowedFd<'_>,
    off_out: Option<&mut u64>,
    len: usize,
    flags: SpliceFlags,
)

#[inline]
pub(crate) fn splice(
    fd_in: BorrowedFd<'_>,
    off_in: Option<&mut u64>,
    fd_out: BorrowedFd<'_>,
    off_out: Option<&mut u64>,
    len: usize,
    flags: SpliceFlags,
) -> io::Result<usize> {
    unsafe {
        ret_usize(syscall!(
            __NR_splice,
            fd_in,
            opt_mut(off_in),
            fd_out,
            opt_mut(off_out),
            pass_usize(len),
            flags
        ))
    }
}

#[inline]
pub(crate) unsafe fn vmsplice(