Function _fcopyfile

Lib/pathlib/_os.py:55–60

Copy a regular file content using high-performance fcopyfile(3) syscall (macOS).

(source_fd, target_fd)

if posix and hasattr(posix, '_fcopyfile'):
    def _fcopyfile(source_fd, target_fd):
        """
        Copy a regular file content using high-performance fcopyfile(3)
        syscall (macOS).
        """
        posix._fcopyfile(source_fd, target_fd, posix._COPYFILE_DATA)
else:
    _fcopyfile = None