Re: light weight user level semaphores

[Alan Cox]

> I don't want nor need file permissions.  A program would look like this:

Your example opens/mmaps so has file permissions. Which is what I was asking

> The shared mem segment can be retrieved in whatever way.  The mutex in
> this case is anonymous.  Everybody who has access to the shared mem
> *must* have access to the mutex.

We agree 8)

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