[uClibc] Readonly root filesystem a la Pebble

[Doyle, Patrick]

Thanks Eric,
That's exactly what I was looking for...

--wpd

> -----Original Message-----
> From: Erik Andersen [mailto:andersen at codepoet.org] 
> Sent: Monday, May 09, 2005 3:39 PM
> To: Doyle, Patrick
> Cc: 'uclibc at uclibc.org'
> Subject: Re: [uClibc] Readonly root filesystem a la Pebble
> 
> 
> On Mon May 09, 2005 at 02:01:29PM -0400, Doyle, Patrick wrote:
> > I was wondering if anybody has done any work to create a 
> read only root
> > filesystem, such as that used in pebble, that can be 
> tweaked occasionally.
> > Basically, I would expect that it would be an ext2 
> filesystem with symbolic
> > links to volatile information pointing to files in /var.
> > 
> > Any thoughts?  Any pointers?
> 
> If you are using a read-only rootfs such as cramfs, you'll want
> to add entries such as:
> 
>     null::sysinit:/etc/init.d/mntdev
>     null::sysinit:/etc/init.d/mntetc
> 
> to  your /etc/inittab file, right after mounting tmpfs on /tmp
> but before calling '/bin/mount -a' (lest /dev/pts be hidden).  I
> have attached the trivial mntdev and mntetc scripts which then
> allow you to update things like /etc/resolv.conf due to dhcp
> requests and add and modify device nodes under /dev as needed.
> 
>  -Erik
> 
> --
> Erik B. Andersen             http://codepoet-consulting.com/
> --This message was written using 73% post-consumer electrons--
> 

Patrick Doyle
DSP Design Engineer
(603) 546-2179

 

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