The only thing I can think of that can affect this is if you are running in a PID namespace (container) - if you are, you may receive SIGHUP instead. This may have some helpful info on your quest - it talks about what signals are sent under what conditions, and what can affect them: http://man7.org/linux/man-pages/man2/reboot.2.html
Hope something here helps! On Thursday, Jun 11, 2015 at 5:34 PM, Steve Litt <[email protected]>, wrote: On Thu, 11 Jun 2015 10:04:13 -0700 (PDT) "Robert Hencke" <[email protected]> wrote: > On Thu, Jun 11, 2015 at 12:59 PM, Steve Litt > <[email protected]> wrote: > > > Hi all, > > What interrupt does Ctrl+Alt+Delete send PID1? > > Google just tells how to tweak /etc/inittab to react to > > Ctrl+Alt+Del, but in my case /etc/inittab isn't being used: I need > > to react to the specific interrupt. > > Thanks, > > SteveT > > Steve Litt > > June 2015 featured book: The Key to Everyday Excellence > > http://www.troubleshooters.com/key > I believe this is SIGINT. > Thanks Robert, I have a feeling that SIGINT isn't getting all the way to PID1. When I do the following: kill -s SIGINT 1 It runs rc.shutdown with the argument "reboot" and reboots the system, just like it's supposed to. But when I press Ctrl+Alt+Del at a virtual terminal, it doesn't. That makes me suspect that either Ctrl+Alt+Del is sending a different interrupt to PID 1, or the SIGINT it's sending isn't getting to PID 1. I'll try to research if further. Thanks again, SteveT Steve Litt June 2015 featured book: The Key to Everyday Excellence http://www.troubleshooters.com/key
