Re: runit SIGPWR support

From: Jonathan de Boyne Pollard <J.deBoynePollard-newsgroups_at_NTLWorld.COM>
Date: Tue, 25 Feb 2020 09:08:34 +0000

Laurent Bercot:
> Of course, but once the fd is closed, /dev/console should not have
> any impact on the process, so would a kbrequest still reach it?

Yes. First: This is a kernel virtual terminal thing not a console
thing. Strictly speaking, it is doing it wrongly to access it through
the console device, which is not necessarily a KVT. Second: The
mechanism does not require an open file descriptor. It requires that
the target process never terminate, because there's no symmetrical
kernel API function to disable the mechanism once it has been enabled,
but it does not require that that process have any particular file
descriptors open.
Received on Tue Feb 25 2020 - 09:08:34 UTC