Re: Non-root mount of a FS?

[Paul Furness <paul.furness@vil.ite.mee.com>]

Hurrah! That got it! Thanks, Glynn.

Just in case anyone else is trying to get this to work, here's what I
did:

In order for users to mount devices, they need to have perms to the
device file. The display manager knows who's just logged into the
console, and therefore should have rights to change this permissions, 
and it is configured in /etc/security/console.perms (man console.perms
helps here).

Basically, the device you want to make available must have some
appropriate entries in here, and then the ownership of the device files
gets changed when you log in.

To get USB Flash drive to work, the simplest way is to use an already
existing entry in this config file - ie, create a link in /dev to the
device which youre flash drive comes up as (sda1 or sdb1, probably) and
call the link "flash" something (eg flash, flash1 or flash01).

Then create a mount point for it under /mnt which is also called flash*
(/mnt/flash or /mnt/flash1 and so on).

Finally, create an entry in /etc/fstab which maps the device to the
mount point. The easiest is to copy the cdrom or floppy entry, and make
sure it doesn't have "ro" in the options.

Then it works.

Paul.



On Mon, 2002-10-28 at 14:26, Glynn Clements wrote:
> 
> Paul Furness wrote:
> 
> > So it's a permission thing, right? This is where I get lost. "ls -l
> > /dev/cdrom" shows that it's a pointer to /dev/scd0. "ls -l /dev/scd0
> > shows that the file is owned by me. If I log into the machine as someone
> > else, the file is owned by them.
> > However, /dev/sda1 is persistently owned by root.
> > 
> > So something is changing the ownership of the device files to enable the
> > user to mount those devices?
> > 
> > What?
> 
> AFAICT, the display manager (xdm, gdm, kdm, ...) is configured to use
> the pam_console module, which sets the permissions of various devices
> as specified by /etc/security/console.perms.
> 
> -- 
> Glynn Clements <glynn.clements@virgin.net>
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-- 
Paul Furness

Systems Manager

Steepness is an illusion caused by flat things leaning over.