Filesystem Ownership

[Laurent Asorne]

On Wednesday, 04 July 2007 03:45:03 D. Michael McIntyre wrote:
> On Tuesday 03 July 2007, Laurent Asorne wrote:
> > Hi! I'd like to change the ownership of my Sony Microvault 1GB USB Memory
> > Stick, but everytime I try with
> > # sudo chown laurent:users /media/MICROVAULT/
>
> I assume the stick is formatted with FAT32, and you're using the VFAT
> filesystem on it.  VFAT doesn't have proper permissions, so you have to set
> any permissions at mount time, with mount parameters.
>
> Lets' see...  I plugged a memory card into my computer, and wound up with:
>
>
> /dev/sdb1 on /media/disk type vfat
> (rw,noexec,nosuid,nodev,noatime,uid=1000,utf8,shortname=lower)
>
> This happened by magic.  I'm not sure what is responsible for mounting it
> with these specific parameters, but I think it's udev.
>
> Looks like this is set up here:
>
> /etc/udev/rules.d/40-permissions.rules
>
> But if you change this at the system level, it will affect any card you
> mount. I don't think there is any off the shelf way to have just one
> particular removable USB storage device come up with different permissions
> from all the rest of them automatically.
>
> You could try to cut something into the udev system to do your custom job. 
> I did that with hotplug once.  However, the more sensible thing in your
> case is probably for you to mount the device by hand, with the parameters
> of your choosing.  Something like...
>
> Well, no, I'm afraid I'm just too tired to dig through the manpage and try
> to come up with the syntax for you.
> --
> D. Michael McIntyre

Thanx. I looked up  /etc/udev/rules.d/40-permissions.rules but could not 
directly know which change to make (man-page is descriptive but not very 
explicit...). I'll be googling around these days to find something more 
useful on the net. but thanx fou help anyway!

Laurent Asorne
-- 
This night methinks is but the daylight sick.
		-- William Shakespeare, "The Merchant of Venice"