gh-107954: Add audit event to PyConfig_Set()

Author: vstinner

Doc/c-api/init_config.rst

@@ -619,6 +619,8 @@ Some options are read from the :mod:`sys` attributes. For example, the option
    The caller must have an :term:`attached thread state`. The function cannot
    be called before Python initialization nor after Python finalization.
 
+   .. audit-event:: cpython.PyConfig_Set name,value c.PyConfig_Set
+
    .. versionadded:: 3.14
 
 

Python/initconfig.c

@@ -4527,6 +4527,10 @@ config_set_sys_flag(const PyConfigSpec *spec, int int_value)
 int
 PyConfig_Set(const char *name, PyObject *value)
 {
+    if (PySys_Audit("cpython.PyConfig_Set", "sO", name, value) < 0) {
+        return -1;
+    }
+
     const PyConfigSpec *spec = config_find_spec(name);
     if (spec == NULL) {
         spec = preconfig_find_spec(name);