Re: Does /var/shm still need to be mounted?

From: H. Peter Anvin (
Date: Sat Jun 03 2000 - 14:27:18 EST

Ulrich Drepper wrote:
> "H. Peter Anvin" <> writes:
> > Interesting. I thought that was the whole purpose of shmfs?
> Did you tried looking at this at some time? mkdir() does not work in
> the shmfs. All you can create are regular files. Even if it would
> work, you would need some sort of overlay filesystem to make the files
> visible in the real filesystem. Then you have to take care of name
> collisions etc etc. It's OK how it's done today. It's sufficient.

Ulrich, are you genuinely saying that even if shmfs isn't mounted onto a
path such that open() can reach it, the glibc 2.2 POSIX IPC
implementation still works?

If not, I think you have misunderstood the thread. If yes, I don't
understand why we need shmfs at all...


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