Pin the overlay namei(9) uses for Linux ABI processes: a target under
the ABI root wins (PR 289739), a native-only target should retry from
the native root (PR 297426), an ENOENT past a resolved ABI target is
not retried, and the plain no-symlink native fallback is unchanged.
Skip without a Linux userland so CI stays green. The two native-only
cases use atf_expect_fail until the retry lands.
PR: 297426
Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D59990
Devin Teske
b98d169d1f