runtime: Permit default behaviour of SIGTSTP, SIGTTIN, SIGTTOU.
Fixes #3037.
R=rsc, minux.ma, r, rsc
CC=golang-dev
https://golang.org/cl/5674072
diff --git a/src/pkg/runtime/runtime.h b/src/pkg/runtime/runtime.h
index 48f6b3e..910f00c 100644
--- a/src/pkg/runtime/runtime.h
+++ b/src/pkg/runtime/runtime.h
@@ -268,9 +268,10 @@
enum
{
SigNotify = 1<<0, // let signal.Notify have signal, even if from kernel
- SigKill = 1<<1, // if signal.Notify doesn't take it, exit quietly
- SigThrow = 1<<2, // if signal.Notify doesn't take it, exit loudly
- SigPanic = 1<<3, // if the signal is from the kernel, panic
+ SigKill = 1<<1, // if signal.Notify doesn't take it, exit quietly
+ SigThrow = 1<<2, // if signal.Notify doesn't take it, exit loudly
+ SigPanic = 1<<3, // if the signal is from the kernel, panic
+ SigDefault = 1<<4, // if the signal isn't explicitly requested, don't monitor it
};
// NOTE(rsc): keep in sync with extern.go:/type.Func.
@@ -501,6 +502,7 @@
String runtime·gostringnocopy(byte*);
String runtime·gostringw(uint16*);
void runtime·initsig(void);
+void runtime·sigenable(uint32 sig);
int32 runtime·gotraceback(void);
void runtime·goroutineheader(G*);
void runtime·traceback(uint8 *pc, uint8 *sp, uint8 *lr, G* gp);
