Use copy_file_range system call for copying on Linux systems

[Brian Burkhalter]

On Feb 16, 2022, at 12:10 PM, Alan Bateman <alan.bateman at oracle.com<mailto:alan.bateman at oracle.com>> wrote:

I suspect Ilya meant using syscall(2) with the NR. We had code in libnio that used approach for the *at functions before they were added to the glibc header files. It's a bit fragile as they are architecture specific.

Oh, I see. It looks like the only place that is still used is in UnixNativeDispatcher.c for fstatat() on Linux.

Brian