CentOS - Sep 2007 - Disabling shutdown and suspend for normal users

Hi,

[CentOS 5]

What is the best way to remove the shutdown and suspend options
from menu's for normal users?

After googling around, I added "SystemMenu=false" to the greeter
section in /etc/gdm/custom.conf. After that the GDM login screen
still shows the options, but 'restart' indeed doesn't work anymore.
However, the gnome menu's when logged in, still have the 'suspend'
options, which still leads to a hanging (unwakeble) machine.

BTW: I prefer editing  config files instead of stupid gui's, as I have to
     change a lot of machines :-)

Regards,
-- 
Henk van Lingen, Systems Administrator & DBA                  (o-      -+
Dept. of Computer Science, Utrecht University.                /\        |
phone: +31-30-2534107                                        v_/_
http://henk.vanlingen.net/             http://www.tuxtown.net/netiquette/

>>>>> On Wed, 19 Sep 2007 15:20:37 +0200
>>>>> "HvL" == Henk van Lingen <henkvl at
cs.uu.nl> wrote:
    HvL> Hi,

    HvL> [CentOS 5]

    HvL> What is the best way to remove the shutdown and suspend
    HvL> options from menu's for normal users?

    HvL> After googling around, I added "SystemMenu=false" to the
    HvL> greeter section in /etc/gdm/custom.conf. After that the GDM
    HvL> login screen still shows the options, but 'restart' indeed
    HvL> doesn't work anymore.  However, the gnome menu's when logged
    HvL> in, still have the 'suspend' options, which still leads to a
    HvL> hanging (unwakeble) machine.

Just set HaltCommand to nothing:

HaltCommand
Same for Reboot and Suspend (Havn't tried suspend yet) but my machines
allow Reboot and Halt neither from the user menus nor the Login-Screen

I think in the [daemon]-section of the config-file

    HvL> BTW: I prefer editing config files instead of stupid gui's,
    HvL> as I have to change a lot of machines :-)

Of course

Henk van Lingen wrote:
> Hi,
> 
> [CentOS 5]
> 
> What is the best way to remove the shutdown and suspend options
> from menu's for normal users?
> 
> After googling around, I added "SystemMenu=false" to the greeter
> section in /etc/gdm/custom.conf. After that the GDM login screen
> still shows the options, but 'restart' indeed doesn't work
anymore.
> However, the gnome menu's when logged in, still have the
'suspend'
> options, which still leads to a hanging (unwakeble) machine.
> 
> BTW: I prefer editing  config files instead of stupid gui's, as I have
to
>      change a lot of machines :-)
To remove the reboot/shutdown options from the login screen (after 
setting SystemMenu=False) two small modifications are needed to:
      /usr/share/gdm/themes/CentOSCubes/CentOSCubes.xml

The two modifications are:

1. Change line 102 from:
                           <show modes="console"/>
to:
                           <show type="reboot"
modes="console"/>


2. Change line 118 from:
                           <show modes="console"/>
to:
                           <show type="halt"
modes="console"/>

The lines above both of these should have an item tag refering to the 
appropriate reboot/halt button.  Then restart the gdm.  The shutdown and 
reboot buttons should no longer appear.


I use the following command:

gconftool-2 --config-source xml:readwrite:/etc/gconf/gconf.xml.mandatory 
-s -t bool /apps/gnome-power-manager/can_suspend false

to remove the suspend option from the gnome system menu.  Also, deleting 
the symbolic links for halt, poweroff, and reboot in /usr/bin appears to 
remove the respective options from the menu as well as from the command 
line.

Erik