docs/114925: update handbook to list method for preventing console reboot

[David Yeske]

>Number:         114925
>Category:       docs
>Synopsis:       update handbook to list method for preventing console reboot
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-doc
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          doc-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Jul 26 07:20:01 GMT 2007
>Closed-Date:
>Last-Modified:
>Originator:     David Yeske
>Release:        HEAD
>Organization:
>Environment:
FreeBSD speed 7.0-CURRENT FreeBSD 7.0-CURRENT #1: Wed Jul 18 23:40:39 EDT 2007     root at speed:/usr/obj/usr/src/sys/SPEED  amd64

>Description:
add sysctl to the handbook to prevent a reboot via control alt delete from the console 
>How-To-Repeat:

>Fix:
see attachment

Patch attached with submission follows:

Index: book.sgml
===================================================================
RCS file: /home/ncvs/doc/en_US.ISO8859-1/books/faq/book.sgml,v
retrieving revision 1.802
diff -u -r1.802 book.sgml
--- book.sgml	17 Jul 2007 18:04:02 -0000	1.802
+++ book.sgml	26 Jul 2007 07:06:15 -0000
@@ -6315,6 +6315,12 @@
 
           <programlisting>options SC_DISABLE_REBOOT</programlisting>
 
+          <para>This can also be done by setting the following sysctl 
+            which does not require a reboot or kernel
+            recompile.</para>
+
+          <screen>&prompt.root; <userinput>sysctl -w hw.syscons.kbd_reboot=0</userinput></screen>
+
           <para>in the configuration file. If you use the PCVT console
             driver, use the following kernel configuration line
             instead.</para>


>Release-Note:
>Audit-Trail:
>Unformatted: