archive_entry_hardlink_w(3) on FreeBSD
The text 566126e0d1ed, as FreeBSD 12.1-RELEASE, FreeBSD 12.0-RELEASE, FreeBSD 11.3-RELEASE, FreeBSD 11.2-RELEASE, FreeBSD 11.1-RELEASE, FreeBSD 10.4-RELEASE shipped it.
functions for manipulating path names in archive entry descriptions