Add perf_event_output boilerplate

Author: r41k0u

examples/execve5.py

@@ -27,6 +27,7 @@ def hello(ctx: c_void_p) -> c_int32:
     dataobj.pid = process_id
     dataobj.ts = ts
     print(f"clone called at {ts} by pid {process_id}")
+    events.output(dataobj)
     return c_int32(0)
 
 

pythonbpf/bpf_helper_handler.py

@@ -340,13 +340,18 @@ def bpf_get_current_pid_tgid_emitter(call, map_ptr, module, builder, func, local
     return pid
 
 
+def bpf_perf_event_output_handler(call, map_ptr, module, builder, local_sym_tab=None):
+    pass
+
+
 helper_func_list = {
     "lookup": bpf_map_lookup_elem_emitter,
     "print": bpf_printk_emitter,
     "ktime": bpf_ktime_get_ns_emitter,
     "update": bpf_map_update_elem_emitter,
     "delete": bpf_map_delete_elem_emitter,
     "pid": bpf_get_current_pid_tgid_emitter,
+    "output": bpf_perf_event_output_handler,
 }
 
 

pythonbpf/maps.py

@@ -30,3 +30,6 @@ def __init__(self, key_size, value_size):
         self.key_type = key_size
         self.value_type = value_size
         self.entries = {}
+
+    def output(self, data):
+        pass  # Placeholder for output method