External NTFS drive permissions

[nikogawa]

I used to share some folders on my NTFS external hard drive through samba in Jaunty. Since I upgraded to Karmic, these shares no longer work.

It seems that the permissions for this drive are only set for myself (no permissions for group or others) and I can not change these permissions (not with chmod or with nautilus, they keep jumping back).

I would like to have the same permissions on my external drives as in jaunty (owned by root and writable, executable by everyone). Since I use several drives I would like to avoid using /etc/fstab.

I tried adding the key mount_options with [umask=000] in system/storage/default_options/ntfs . But this doesn't seem to work in Karmic.

Where can I change the permissions on these automatically mounted devices.

Thank you,
Niko

[nikogawa]

It seems that these mount options are hard-coded in devicekit-disks.

However I have found a dirty hack which seems to work for me. I made the following script for my two external hard drives. It first unmounts the drives, and then mounts them again with dmask=000 as mount option.

#!/bin/bash

devkit-disks --unmount /dev/disk/by-uuid/BEDC44F4DC44A90B
devkit-disks --unmount /dev/disk/by-uuid/0D3594370C618A2A

devkit-disks --mount-options "dmask=000" --mount /dev/disk/by-uuid/BEDC44F4DC44A90B
devkit-disks --mount-options "dmask=000" --mount /dev/disk/by-uuid/0D3594370C618A2A

I am still looking for a solution to change the default mount options.

[da3rX]

I am having the exact same problem. Is there a better solution to this?

[holtz]

I have the exact same problem as well. I'm going to file a bug.

We can't continue to have bugs like this in newly released versions if we want to get wider adoption of Ubuntu. Do developers consider the affect that changing something like a mechanism will have for users?

Worse, nowhere can I find any information on how to change the default permissions for mounted USB drives. Googling turns up any number of possiblities: HAL, UDEV, fstab, automount, gconf. Which one does Ubuntu use? I have no idea. I really shouldn't have to know. There are megabytes of help files but no where can I find the information I need.

[holtz]

https://bugs.launchpad.net/ubuntu/+s...ev/+bug/482501

[dunskii]

just wondering if there has been any updates to this problem yet..?
Cheers
D

[dunskii]

Ok, well I have found a work around for this if you share over the network.
I just shared my drive with read write access for all using samba (i know this isnt the most secure but it worked)
Then just accessed the drive via places -> network from the other pc's
Only problem is you still cant access the drive on the pc it is plugged into unless you're in root.
Hope this helps someone.
D

[mikeize]

I see the bug is triaged in launchpad... this is driving me crazy.

[wackyraces]

I have the same problem. I upgraded from Jaunty to Karmic and lost the ability to share external NTFS formatted drives.

I can confirm it is a permissions problem when the drive is auto-mounted by devkit-disks. Creating a shell script to unmount and remount the relevant drive with the right permissions (as suggested above) solved it for me, but it's not ideal.

If I find a way of modifying the default behavior of devkit-disks I post it here, however things don't look promising!

[speedbacon]

Thanks for filing a bug on this. This is driving me crazy too! Does anyone know if there is a workaround for this yet?