Where has GETSIGINFO gone?

[Daniel Jacobowitz]

On Sat, Jul 11, 2009 at 11:07:51AM +0300, Shachar Shemesh wrote:
> The problem is that, as a debugger, I need to be able to
> differentiate between a SIGTRAP supposedly delivered to the debuggee
> because I asked to trace the system calls, and a SIGTRAP actually
> delivered to the debuggee. If I don't, my count is going to be off,
> and I will totally mis-interpret the debugee's state.
> 
> The best way, as far as I can tell, to do that on Linux is to use the
> PTRACE_GETSIGINFO command. This provides me with a field, si_code,
> that can distinguish between a signal and a system call. This is
> important to make sure that I don't get confused over which is which.

Have you seen PTRACE_SETOPTIONS and PTRACE_O_TRACESYSGOOD?

-- 
Daniel Jacobowitz
CodeSourcery