Re: [uml-devel] When /tmp is not tmpfs.

[Nix <nix@esperi.org.uk>]

On Thu, 24 Nov 2005, Rob Landley uttered the following:
> There is a tmpfs mount, it's /dev/shm.  And apparently, even if tmpfs isn't 
> exposed as a separate filesystem, system V shared memory will still use it.

s/System V/POSIX/

It's the shm_open()/shm_close()shm_unlink() functions you're looking for.

It's been present in glibc since 2.2, so you should be able to use them
without any real difficulty if need be.

> So my question is, could system v shared memory be used in place of the tmpfs 
> mount?  (Can it be mapped in the right location and inherited across fork()?)  

You could certainly do just that with POSIX shm :)

-- 
`Y'know, London's nice at this time of year. If you like your cities
 freezing cold and full of surly gits.' --- David Damerell



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