Basic support for tracing vfork

- allow even individual tasks to have their event handlers.  These are
  called in precedence to the thread group event handlers.
- distinguish CLONE and VFORK events
- add methods for dynamic changes of leader
- add new process status ps_sleeping

1 files changed, 1 insertions, 0 deletions

diff --git a/ltrace.h b/ltrace.h
index 0ff4572..194704d 100644
--- a/ltrace.h
+++ b/ltrace.h
@@ -9,6 +9,7 @@ enum Event_type {
 	EVENT_ARCH_SYSCALL,
 	EVENT_ARCH_SYSRET,
 	EVENT_CLONE,
+	EVENT_VFORK,
 	EVENT_EXEC,
 	EVENT_BREAKPOINT,
 	EVENT_LIBCALL,