Add PTRACE_GETSIGINFO and PTRACE_SETSIGINFO

These new ptrace commands allow a debugger to control signals more precisely;
for instance, store a signal and deliver it later, as if it had come from the
original outside process or in response to the same faulting memory access.

2 files changed, 3 insertions, 0 deletions

diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h
index c6de3a4ea70a..b56bbe7ca800 100644
--- a/include/linux/ptrace.h
+++ b/include/linux/ptrace.h
@@ -26,6 +26,8 @@
 /* 0x4200-0x4300 are reserved for architecture-independent additions.  */
 #define PTRACE_SETOPTIONS	0x4200
 #define PTRACE_GETEVENTMSG	0x4201
+#define PTRACE_GETSIGINFO	0x4202
+#define PTRACE_SETSIGINFO	0x4203
 
 /* options set using PTRACE_SETOPTIONS */
 #define PTRACE_O_TRACESYSGOOD	0x00000001
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 15a951d2d27e..a325e5a8c645 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -400,6 +400,7 @@ struct task_struct {
 	struct backing_dev_info *backing_dev_info;
 
 	unsigned long ptrace_message;
+	siginfo_t *last_siginfo; /* For ptrace use.  */
 };
 
 extern void __put_task_struct(struct task_struct *tsk);