Messages in this thread | | | From | (really ) | Date | 17 Apr 1996 15:15:38 +0400 | Subject | Re: funny behaviour of shutdown |
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Theodore Y. Ts'o (tytso@MIT.EDU) wrote: : It was added deliberately as a security feature. The idea is that when : the controlling process dies, the tty should get hung up. This prevents : surviving processes from either maliciously or accidentally being able : to send/receive characters to the tty. For example, without this the : next person who is logging in to have access to a leftover program, : confusing the person and perhaps allowing that user to access files : owned by the previous user. It's also very useful way of cleaning up : after users on a dialup server.
: As far as shutdown is concerned, it's clear how this causes a problem. : What I'd suggest doing to work around this is to reopen the tty after : kill() call.
Yes, I am aware about it. However, I start halt by exec from root shell, so that SIGKILL do not kill session leader (i.e. halt) I do not understand why kernel should hang up this terminal. Are you sure that it is correct?
Alexey Kuznetsov.
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