[TUHS] Early non-Unix filesystems?

[shawn wilson]

On Mar 18, 2016 1:02 PM, "Pat Barron" <patbarron at acm.org> wrote:
>

> Even as late as V7, "." and ".." were not automatically added to
directories when created - the "mkdir" program used mknod() to create the
directory, and then created the links for "." and ".." by itself.

Is that the last Unix that had a major number for file system objects? I
hadn't run into this but, thinking about it, it's kinda smart (probably
slower than specific execve kernel calls but still cool).
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