pub unsafe fn fcopyfile<FromFd: AsFd, ToFd: AsFd>(
from: FromFd,
to: ToFd,
state: copyfile_state_t,
flags: CopyfileFlags,
) -> Result<()>
pub unsafe fn fcopyfile<FromFd: AsFd, ToFd: AsFd>(
from: FromFd,
to: ToFd,
state: copyfile_state_t,
flags: CopyfileFlags,
) -> Result<()>