On Fri, Dec 31, 2004 at 09:19:48AM -0800, Linus Torvalds wrote: > > > On Fri, 31 Dec 2004, Daniel Jacobowitz wrote: > > > > Lots, I like it. The syscall trap will always be delivered before the > > single-step trap, right, because signal delivery won't run until we > > return to userspace? > > Yes. Although I've not actually tested it. > > Before, it used to show up as one event, and basically the "0x80" marker > got lost, so effectively the "system call exit" part would have got lost. > Now, it _may_ DTRT, with the caveat that the system call ptrace_notify() > thing still has the same problem with restarting-with-a-signal. > > That's basically a "don't do that then", and is the status quo, of course, > so this is at least not a regression. It's still pretty ugly, but > apparently nobody really cares ;)
Yes. At some point, I'd like to make that an error - if you want to restart with a signal, don't do it from the notification points where it doesn't make sense (exit, fork, vfork-done, syscall). Send a signal by hand, and then resume, and if you want to fudge the siginfo you can do that when stopped in the signal delivery path. -- Daniel Jacobowitz
