On 30. 04. 20, 8:42, Arseny Maslennikov wrote: > This matches the behaviour of other Unix-like systems that have SIGINFO > and causes less harm to processes that do not install handlers for this > signal, making the keyboard status character non-fatal for them. > > This is implemented with the assumption that SIGINFO is defined > to be equivalent to SIGPWR; still, there is no reason for PWR to > result in termination of the signal recipient anyway — it does not > indicate there is a fatal problem with the recipient's execution > context (like e.g. FPE/ILL do), and we have TERM/KILL for explicit > termination requests. > > To put it another way: > The only scenario where system behaviour actually changes is when the > signal recipient has default disposition for SIGPWR. If a process > chose to interpret a SIGPWR as an incentive to cleanly terminate, it > would supply its own handler — and this commit does not affect processes > with non-default handlers. > > Signed-off-by: Arseny Maslennikov <a...@cs.msu.ru> > --- > include/linux/signal.h | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) > > diff --git a/include/linux/signal.h b/include/linux/signal.h > index 05bacd2ab..dc31da8fc 100644 > --- a/include/linux/signal.h > +++ b/include/linux/signal.h > @@ -369,7 +369,7 @@ extern bool unhandled_signal(struct task_struct *tsk, int > sig); > * | SIGSYS/SIGUNUSED | coredump | > * | SIGSTKFLT | terminate | > * | SIGWINCH | ignore | > - * | SIGPWR | terminate | > + * | SIGPWR | ignore |
You need to update signal.7 too: https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/man7/signal.7#n285 thanks, -- js suse labs
