[PATCH] strace: add :signal option to efault

[Seraphime Kirkovski]

On Mon, Dec 26, 2016 at 01:54:16PM +0300, Dmitry V. Levin wrote:
> Are they really mutually exclusive?  What if the signal is handled?
> Why can't we inject both a signal and a fault into the same syscall?

You're right, strictly speaking they aren't mutually exclusive. But if 
we only want to fault the syscall, injecting an error value suffices. 
Sending a signal _and_ setting an error value seems like an overkill to 
me. That said, if one really wants to bypass signal masking, one can 
fault the call to signal.