CTRL+ALT+DEL for Shutdown not Reboot

FestusHagen

FestusHagen

Hi all,

FreeBSD 8.2-RELEASE (8.2-STABLE, And various other versions)

I have edited the Ctrl+Alt+Del keymap to halt the system vs. reboot.
(About any key combo would make me happy)

However it does not work.

What I've done:
[cmd=]kdbcontrol -d > /etc/zathras.us.iso.kbd[/cmd]
Edited the correct scan code (083) from 'boot' to 'halt' in /etc/zathras.us.iso.kbd.

Added the following to rc.conf:
Code: 
keymap="/etc/zathras.us.iso.kbd"
Then loaded it:
[cmd=]kbdcontrol -l /etc/zathras.us.iso.kbd[/cmd]
Then checked to see if it loaded:
[cmd=]kbdcontrol -d[/cmd]
Shows the modified keymap.

Hit CTRL+ALT+DEL and it REBOOTED!

After logging back in I did:
[cmd=]kbdcontrol -d[/cmd]
And it showed the modified keymap ...

However, It still reboots!

Why do I want this, I do NOT run monitors on batteries, when the power goes out I need to cleanly shutdown blindly. Systems are in secure vaults, no worries about intruders!

Thanks

-Enjoy
fh : )_~
 
FestusHagen said:
when the power goes out I need to cleanly shutdown blindly.
Click to expand...
Press the power button and the system will cleanly shutdown.
 
FestusHagen said:
Systems are in secure vaults, no worries about intruders!
Click to expand...

SirDice said:
Press the power button and the system will cleanly shutdown.
Click to expand...

Note my highlight in red above ... However you have given me an idea, A keyboard with the "Power, Sleep, Wake Up" keys (a 107 key) and I just happen to have a few hundred of them laying about!

However, I cannot walk away from the failure and need to resolve for satisfaction!

Any suggestions as to why the keymap change does not work!

-Enjoy
fh : )_~
 
As far as I know you can only disable it, not change it. There's a kernel option to disable ctrl-alt-del completely.

Code: 
options         SC_DISABLE_REBOOT       # disable reboot key sequence
 
Quote (with minor formatting) from: kbdmap(5)
Code: 
The action of the key under each modifier can be:
[INDENT]boot = Reboot the machine.
halt = Halt the machine.
pdwn = Halt the machine and attempt to power it down.[/INDENT]
States that it can be done, however 'halt' and 'pdwn' still reboot, not halt as stated.

The thought of using the 'Power Button' on a keyboard does not work, it's not mapped and even if it was mapped (or mappable) if the 'halt' or 'pdwn' action modifiers do not work as the man pages state, it's pointless.

-Enjoy
fh : )_~
 
Now SirDice, You know there is a easier method then:
Code: 
options         SC_DISABLE_REBOOT       # disable reboot key sequence

I've read the post! :)

For others, check out: sysctl(8)
And:
Code: 
sysctl -a | grep kbd_reboot
  • 0 = disable
  • 1 = enable

However, if you are recompiling, you might as well do it in the kernel!

-Enjoy
fh : )_~
 
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