Flavio:

If you run uml from the root account, or if you chmod a+rw /dev/sda*, can you 
access the usb drive
from within a uml instance?

If you can do that, your other problems are simple to solve.

So, can you access the usb drive from within the uml instance?

Chris Marshall

--- Flavio <[EMAIL PROTECTED]> wrote:

> Ok, I tried to change permission level to 666 for /dev/sda and /dev/sda1, but
> I can't mount (on my host system) my pen-drive unless I leave the
> "user" word in the /etc/fstab file.
> To make this mount attempt I modified my fstab as below (as regard /dev/sda1):
> 
> /dev/sda1               /mnt/pendrive   auto            rw,noauto
>          0 0
> 
> I also added my user to disk group. I should be "mountable" because
> # ls -l /dev/sda*
> brw-rw-rw- 1 root disk 8, 0 Nov 10 00:42 /dev/sda
> brw-rw-rw- 1 root disk 8, 1 Nov 10 00:42 /dev/sda1
> 
> As you see permission level is set to 666. My user belongs to disk group.
> It maight be that disk group is useful to do something else... I don't
> know to do what.
> 
> Now, I restored either /etc/fstab either permission level to 600 for 
> /dev/sda*.
> 
> It seems both my ideas don't work.
> 
> Flavio.
> 
> 2006/11/10, Brock, Anthony - NET <[EMAIL PROTECTED]>:
> > > -----Original Message-----
> > > If you agree with me, the other thing I can try, is to add every user
> > > who needs to be able to read and write on a pen drive accessible by
> > > /dev/sda1 to disk group. I don't know if it will works, but it's only
> > > my idea.
> >
> > This depends on how and why you are using UML. In general, I run
> > multiple servers on a single host that should NEVER have access to each
> > other's drives. In light of this, I change the user ownership to the
> > individual account that each guest instance runs under.
> >
> > However, your case may be different. If you are only running a single
> > guest or if you don't care that a compromised guest might be able to
> > read the confidential files of another virtual server (or possibly the
> > host), then your solution should work. Does either of your suggestions
> > solve you problem?
> >
> > Tony
> >
> 
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