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DragonFly kernel List (threaded) for 2003-09
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Re: cache_lookup() work this week.

From: Garance A Drosihn <drosih@xxxxxxx>
Date: Wed, 3 Sep 2003 15:03:21 -0400

At 10:10 PM -0700 9/2/03, Matthew Dillon wrote:
    The fourth step will be a *BIG* Carrot...
    This means that (A) it will be possible to hardlink

Isn't this dangerous? What if you have a hardlink between /a/b/c/d and /a/b? Something like 'find' will descend down into /a/b/c/d and only find itself back at /a/b (but with a longer pathname...). There won't be a good way for 'find' to avoid that kind of loop, if I understand this correctly.

    and (B) it will be possible to implement semi-hard links,
    basically softlinks that *look* like hardlinks

What will this be like? Ie, what will be the difference between hard-links and semi-hard links? Will this be something like the way OpenAFS handles volume-mounting?

    and (C) to be able to CD forwards and backwards without
    the system getting confused about paths.

This would be nice!

Garance Alistair Drosehn            =   gad@xxxxxxxxxxxxxxxxxxxx
Senior Systems Programmer           or  gad@xxxxxxxxxxx
Rensselaer Polytechnic Institute    or  drosih@xxxxxxx

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