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midixinga

Member

Registered: 2014-01-18

Posts: 196

[solved] KDE Mounting truecrypt device asks for legitimation

Hi,

I use sudo, and my login is member of the wheel-group and I have an entry in /etc/sudoers

%wheel ALL=(root) NOPASSWD:/usr/bin/truecrypt

Mounting a device (/mnt/truecrypt2 does not exist) with:

truecrypt /dev/disk/by-id/<uuid> /mnt/truecrypt2

works in xfce or lxqt, but in KDE I'll be asked for root password to "mount a filesystem on a system device": /dev/mapper/truecrypt2.

Then I cancel and everything is fine; I can access my files and I see:

$ ls -al /dev/mapper/
insgesamt 0
drwxr-xr-x  2 root root      80 23. Dez 20:02 .
drwxr-xr-x 22 root root    3460 23. Dez 20:02 ..
crw-------  1 root root 10, 236 23. Dez 18:02 control
lrwxrwxrwx  1 root root       7 23. Dez 20:02 truecrypt2 -> ../dm-0

If I enter the password or change the appropriate polkit-udisks2-rule I can mount w/o password, but I'll get an error when I dismount:

device-mapper: remove ioctl on truecrypt2 failed: Device or resource is busy 
Command failed

then I have to repeat the dismount command to remove /dev/mapper/truecrypt2 and then the device is proper dismounted.

here is the journal:

Dez 23 19:51:01 dixi-arch sudo[7104]:     dixi : TTY=pts/1 ; PWD=/home/dixi ; USER=root ; COMMAND=/usr/bin/truecrypt --core-service
Dez 23 19:51:01 dixi-arch sudo[7104]: pam_unix(sudo:session): session opened for user root by dixi(uid=0)
Dez 23 19:51:01 dixi-arch sudo[7104]: pam_unix(sudo:session): session closed for user root
Dez 23 19:51:02 dixi-arch krunner[5670]: "/org/freedesktop/UDisks2/block_devices/dm_2d0" has new interfaces: ("org.freedesktop.UDisks2.Block", "org.freedesktop.UDisks2.Filesystem")
Dez 23 19:51:02 dixi-arch dolphin[7059]: "/org/freedesktop/UDisks2/block_devices/dm_2d0" has new interfaces: ("org.freedesktop.UDisks2.Block", "org.freedesktop.UDisks2.Filesystem")
Dez 23 19:51:02 dixi-arch kdeinit5[5626]: "/org/freedesktop/UDisks2/block_devices/dm_2d0" has new interfaces: ("org.freedesktop.UDisks2.Block", "org.freedesktop.UDisks2.Filesystem")
Dez 23 19:51:02 dixi-arch baloo_file[5668]: "/org/freedesktop/UDisks2/block_devices/dm_2d0" has new interfaces: ("org.freedesktop.UDisks2.Block", "org.freedesktop.UDisks2.Filesystem")
Dez 23 19:51:02 dixi-arch dolphin[7059]: org.kde.baloo: "/org/freedesktop/UDisks2/block_devices/dm_2d0"
Dez 23 19:51:02 dixi-arch dolphin[7059]: org.kde.baloo: "/org/freedesktop/UDisks2/block_devices/dm_2d0"
Dez 23 19:51:02 dixi-arch kdeinit5[5626]: QObject::connect: invalid null parameter
Dez 23 19:51:02 dixi-arch baloo_file[5668]: org.kde.baloo: "/org/freedesktop/UDisks2/block_devices/dm_2d0"
Dez 23 19:51:02 dixi-arch polkit-kde-authentication-agent-1[5680]: Listener adapter polkit_qt_listener_initiate_authentication
Dez 23 19:51:02 dixi-arch polkit-kde-authentication-agent-1[5680]: GSimpleAsyncResult: 0xdc2c20
Dez 23 19:51:02 dixi-arch polkit-kde-authentication-agent-1[5680]: polkit_qt_listener_initiate_authentication callback for  0xcca120
Dez 23 19:51:02 dixi-arch polkit-kde-authentication-agent-1[5680]: Initiating authentication
Dez 23 19:51:02 dixi-arch polkit-kde-authentication-agent-1[5680]: Message of action:  "Legitimierung ist zum Einhängen von /dev/mapper/truecrypt2 notwendig"
Dez 23 19:51:02 dixi-arch polkit-kde-authentication-agent-1[5680]: Action description has been found
Dez 23 19:51:02 dixi-arch polkit-kde-authentication-agent-1[5680]: WinId of the dialog is  33554451 0
Dez 23 19:51:02 dixi-arch polkit-kde-authentication-agent-1[5680]: WinId of the shown dialog is  33554451 33554451
Dez 23 19:51:02 dixi-arch polkit-kde-authentication-agent-1[5680]: Trying again
Dez 23 19:51:02 dixi-arch polkit-kde-authentication-agent-1[5680]: REQUEST
Dez 23 19:51:02 dixi-arch polkit-kde-authentication-agent-1[5680]: Request:  "Password: "
Dez 23 19:51:02 dixi-arch polkit-kde-authentication-agent-1[5680]: "Password: "
Dez 23 19:51:02 dixi-arch kernel: EXT4-fs (dm-0): mounted filesystem with ordered data mode. Opts: (null)
Dez 23 19:51:02 dixi-arch dolphin[7059]: org.kde.baloo: true "/org/freedesktop/UDisks2/block_devices/dm_2d0"
Dez 23 19:51:02 dixi-arch dolphin[7059]: org.kde.baloo: true "/org/freedesktop/UDisks2/block_devices/dm_2d0"
Dez 23 19:51:02 dixi-arch baloo_file[5668]: org.kde.baloo: true "/org/freedesktop/UDisks2/block_devices/dm_2d0"

Any idea? Bug in KDE or bug in all other environments? :-)

Edit: It worked also with KDE4

Edit2 Even after "su" as root I get this legitimation window with password :-/

Solved: It's the automounter of Plasma/Frameworks? I set "automount every removable device automatically"; so KDE tried to automount the same time as truecrypt.
I limited the automount to known unencrypted usb-devices and now it works
weird: this proble never came across with KDE4

Last edited by midixinga (2015-12-24 00:53:18)