Messages in this thread | | | Date | Fri, 13 Apr 2001 00:26:46 +0000 | From | Pavel Machek <> | Subject | Re: Let init know user wants to shutdown |
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> In article <9b04food@ncc1701.cistron.net>, > Miquel van Smoorenburg <miquels@cistron-office.nl> wrote: > >SIGTERM is a bad choise. Right now, init ignores SIGTERM. For > >good reason; on some (many?) systems, the shutdown scripts > >include "kill -15 -1; sleep 2; kill -9 -1". The "-1" means > >"all processes except me". That means init will get hit with > >SIGTERM occasionally during shutdown, and that might cause > >weird things to happen. > > > >Perhaps SIGUSR1 ? > > In the immortal words of Max Headroom, t-t-talking to myself ;) > > In fact, the kernel should probably use a real-time signal > with si_code set to 1 for ctrl-alt-del, 2 for the powerbutton etc. > > It should first check if process 1 (init) installed a handler > for that real-time signal. If not, it should use the old > signals (SIGINT for ctrl-alt-del, SIGWINCH for kbrequest).
This is ugly as night, but SIGUSR1 looks okay.
-- Philips Velo 1: 1"x4"x8", 300gram, 60, 12MB, 40bogomips, linux, mutt, details at http://atrey.karlin.mff.cuni.cz/~pavel/velo/index.html.
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