Re: devfs patch v21 available
Richard Gooch (rgooch@atnf.CSIRO.AU)
Tue, 31 Mar 1998 16:48:37 +1000
Following up on myself:
> Richard Guenther writes:
> > On Mon, 30 Mar 1998, Richard Gooch wrote:
> > > Hi, all. Version 21 of my devfs patch is now available
> > [...]
> > > Please, would people give this a final thrashing. I want to submit
> > > this to Linus ASAP. Unless there are outstanding issues, I'm happy to
> > > see it included in the mainstream kernel now.
> >
> > It works for me (TM), apart from one bug and some (minor) flaws:
> >
> > - SysVInit (v2.65f) seems to try to open /dev/console. So I see
> > 'unable to open an initial console' on bootup until I mknod
> > the console device into /dev (ext2)
> > - SysVInit opens /dev/initctl on shutdown.... (pipe)
>
> This problem is similar to init versions which need
> /dev/telinit. There is a userspace solution to this:
>
> # cd /sbin
> # mv init init.real
> # echo '#! /bin/sh\nmount -n -t devfs none /dev\n/sbin/init.real' > init
> # chmod a+x init
>
> I've toyed with the idea of adding a config option to have devfs
> automatically mounted straight after the root filesystem is
> mounted. This would also help where the kernel init code opens up
> /dev/console prior to exec'ing /sbin/init (i.e. before we jump to
> userland for the first time). I could solve this problem by having the
> kernel init code open via devfs instead of through the root
> filesystem, in which case the above userspace solution for the init
> programme would be needed.
> So, I'd like to get some feedback from some kernel gurus.
In the meantime I've gone ahead and implemented a config option to
mount devfs onto /dev at boot (after the root FS is mounted). I'm
going to release another patch ASAP.
Regards,
Richard....
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