better replacements for fcalls backend

Signed-off-by: Hugo Lefeuvre <[email protected]>

kraft/app/app.py

@@ -800,7 +800,10 @@ def simple_replace(template_path, path, marker, shstack_enabled=True):
 
             # then generate cocci files dynamically from the template
             gr_rule_template = get_sec_rule("gatereplacer.cocci.in")
-            cb_rule_template = get_sec_rule("callbackreplacer.cocci.in")
+            if FCALLS_enabled:
+                cb_rule_template = get_sec_rule("rmcallbacks.cocci.in")
+            else:
+                cb_rule_template = get_sec_rule("callbackreplacer.cocci.in")
             gr_rule_template = gr_rule_template.replace("{{ comp_cur_nb }}",
                 str(lib.compartment.number))
             cb_rule_template = cb_rule_template.replace("{{ comp_cur_nb }}",

kraft/sec/rules/rmcallbacks.cocci.in

@@ -0,0 +1,9 @@
+@cbvoid{{ rule_nr }}@
+identifier func;
+type T;
+@@
+
+- __attribute__(({{ lib_from_name }}_callback))
+T func(...) {
+...
+}