[haiku-development] [RFC] sigaction SA_SIGINFO support
- From: Andreas Färber <andreas.faerber@xxxxxx>
- To: haiku-development@xxxxxxxxxxxxx
- Date: Tue, 12 Aug 2008 01:37:49 +0200
Hello,
As discussed earlier, Haiku currently has BeOS-compatible signal
handlers, which double as basic POSIX-compliant signal handlers.
Attached is a patch which attempts to add support for POSIX-style
signal handlers that provide extended information on the signal and
context. The SA_SIGINFO flag is used to distinguish, as pointed out by
François.
This is still work in progress, I'm posting it to check whether I'm on
the right track there. I've tested it in a gcc4 image with ftp and
vim. Not yet tested with the signal test apps, not in a gcc2 image and
not the new code path. I have however checked (via panic) that the new
codepath was not taken by accident. What is still missing is a lot of
info in the siginfo_t struct, which isn't currently available (new
SA_SIGINFO code path only). I was thinking we could use the siginfo_t
as argument to arch_setup_signal_frame maybe, to get at that data.
What might be applied already is the new ucontext.h header, defining
ucontext_t. For its mcontext_t member I've reused BeOS' struct vregs
for simplicity for now.
Andreas
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