To clarify: that's the Plan 9 situation. I'm talking about the merits of the Fuchsia situation (".. is no longer available").
References to a forbidden parent directory from a chroot can just return ENOENT, because it doesn't exist in that universe. I may not be understanding this fully, but to condemn ".." based on some accusation that it's incompatible with chroot semantics (or "a holdout from POSIX") seems tendentious.
References to a forbidden parent directory from a chroot can just return ENOENT, because it doesn't exist in that universe. I may not be understanding this fully, but to condemn ".." based on some accusation that it's incompatible with chroot semantics (or "a holdout from POSIX") seems tendentious.