[kde-linux] Unmounting USB Key (not root)

SnapafunFrank Frank at snapafun.co.nz
Wed Sep 28 03:02:36 UTC 2005

James White wrote:

>I feel like I'm getting "close" to understanding this udev thing... but not 
>quite there yet.
>I am setting up machines for clients who will have no root access.  They will 
>be using USB-Keys - and I cannot identify them in advance by serial number so 
>I have entered this in my 10-udev.rules:
>KERNEL="sd[a-z][0-9]*", NAME="WonderKey%n", OWNER="root", GROUP="usb", 
>As expected, I plug in a key and it shows up just nicely in the "Storage 
>Media" applet.  Of course it did this BEFORE my rule too, but now it's called 
>a "WonderKey".  (The name WonderKey was just so I knew that my rule was 
>actually being executed.)
>But even with my rule set to give GROUP-"usb" rwx permissions, members of that 
>group cannot unmount the key.  The error says:
>umount:  only root can unmount /dev/WonderKey1 
>from /media/JAMES_KEY"
>Which is exactly the situation that caused me to write my rule in the first 
>So, WHERE should I be setting the "unmount" permission for my devices?
>I bet I am missing something pretty darned basic here - but I've been wracking 
>my brain for days on this. 
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I left this alone for a while hoping that someone more knowledgeable 
than I would answer.

But, strictly as a newbie, I still think that " OWNER="root" " says it 
all ????

Newbie Seeking USER_FUNCTIONALITY always!



Big or small, a challenge requires the same commitment to resolve.
Registered Linux User # 324213  [ http://counter.li.org/ ]

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