[Bug 269780] O_RESOLVE_BENEATH succeeds on ".." on "/"

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=269780

Val Packett <val@packett.cool> changed:

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--- Comment #5 from Val Packett <val@packett.cool> ---
(In reply to Konstantin Belousov from comment #1)

It's not like the consequences are huge, but

- right now if there is a requirement to have consistent behavior in this
obscure case across platforms, it's annoying to implement (every open call
would need to waste a syscall probing whether the fd is the root like this, and
falling back to a manual userspace implementation if that's the case)
- inside FreeBSD itself we might want the same consistency for implementing
RESOLVE_BENEATH in Linuxulator?

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