Date: Wed, 23 Apr 1997 21:46:22 +1000 (EST) From: "Daniel O'Callaghan" <danny@panda.hilink.com.au> To: Adrian Chadd <adrian@staff.psinet.net.au> Cc: freebsd-hackers@freebsd.org Subject: Re: Best way to hook into user logins / logouts ? Message-ID: <Pine.BSF.3.91.970423214242.10264M@panda.hilink.com.au> In-Reply-To: <Pine.LNX.3.93.970423162956.4080A-100000@staff.psinet.net.au>
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On Wed, 23 Apr 1997, Adrian Chadd wrote:
> For what I'm working on I need to hook into when users login and logout.
> The "best" way I can find currently is hooking into the wtmp updates in
> libc (especially for the logouts), does anyone know any better ways?
Well, you can write a small program which does
while (1) {
bytes=read(wtmp);
switch(bytes) {
case -1: error ; break;
case 0: sleep X; break;
default: process entry;
}
}
I have a program working like that now.
Another way to trap logouts on modem lines is to insert a small program
between init and getty. Declare the small program in /etc/ttys and have
it exec getty when it is finished.
Danny
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