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Date: Thu, 7 Apr 2005 11:16:14 -0400 (EDT)
From: "Richard B. Johnson" <linux-os@analogic.com>
Reply-To: linux-os@analogic.com
To: Linux kernel <linux-kernel@vger.kernel.org>
Subject: Linux-2.6.11 can't disable CAD
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In the not-too distant past, one could disable Ctl-Alt-DEL.
Can't do it anymore.

Script started on Thu 07 Apr 2005 10:58:11 AM EDT
[SNIPPED leading stuff...]

mprotect(0xb7fe4000, 28672, PROT_READ|PROT_EXEC) = 0
brk(0)                                  = 0x804a000
brk(0x8053000)                          = 0x8053000
reboot(LINUX_REBOOT_MAGIC1, LINUX_REBOOT_MAGIC2, LINUX_REBOOT_CMD_CAD_OFF) = 0
pause( <unfinished ...>
_exit(0)                                = ?
# exit
Script done on Thu 07 Apr 2005 10:58:21 AM EDT

Observe that reboot() returns 0 and `strace` understands what
parameters were passed. The result is that, if I hit Ctl-Alt-Del,
`init` will still execute the shutdown-order (INIT 0).

A side note, while researching this problem, I think I found
that LINUX_REBOOT_MAGIC2 is Linus' birthday (in hex). Maybe
the problem is that he no longer observes his birthday?

Cheers,
Dick Johnson
Penguin : Linux version 2.6.11 on an i686 machine (5537.79 BogoMips).
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