Beep on shutdown

Vladimir Dergachev (vdergach@sas.upenn.edu)
Sat, 29 May 1999 23:49:05 -0400 (EDT)

I rememeber some talk a while ago about having an option of making system
beep of "System halted" message is displayed.

Is anyone working on it ? Is there a patch available ?

Also can someone tell me the answer to this question:

in kernel/sys.c:sys_reboot we have the following piece of code:

case LINUX_REBOOT_CMD_HALT:
notifier_call_chain(&reboot_notifier_list, SYS_HALT,NULL);
printk(KERN_EMERG "System halted.\n");
machine_halt();
do_exit(0);
break;

I always thought that when I see "System halted" it means I can turn off
the computer safely. Is this true ? Why do we need machine_halt() and
do_exit(0) instructions ?? Why do we need a call to schedule in do_exit() ?

thank you

Vladimir Dergachev

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