testsuite: check if module is in kernel for return code

diff --git a/testsuite/init_module.c b/testsuite/init_module.c
index 5983941..6db0d17 100644 (file)
--- a/testsuite/init_module.c
+++ b/testsuite/init_module.c
@@ -48,6 +48,7 @@ struct mod {
 
 static struct mod *modules;
 static bool need_init = true;
+static struct kmod_ctx *ctx;
 
 static void parse_retcodes(struct mod *_modules, const char *s)
 {
@@ -178,9 +179,33 @@ static void init_retcodes(void)
                                                S_TC_INIT_MODULE_RETCODES);
        }
 
+       ctx = kmod_new(NULL, NULL);
+
        parse_retcodes(modules, s);
 }
 
+static inline bool module_is_inkernel(const char *modname)
+{
+       struct kmod_module *mod;
+       int state;
+       bool ret;
+
+       if (kmod_module_new_from_name(ctx, modname, &mod) < 0)
+               return false;
+
+       state = kmod_module_get_initstate(mod);
+
+       if (state == KMOD_MODULE_LIVE ||
+                       state == KMOD_MODULE_BUILTIN)
+               ret = true;
+       else
+               ret = false;
+
+       kmod_module_unref(mod);
+
+       return ret;
+}
+
 TS_EXPORT long init_module(void *mem, unsigned long len, const char *args);
 
 /*
@@ -223,10 +248,11 @@ long init_module(void *mem, unsigned long len, const char *args)
        if (mod != NULL) {
                errno = mod->errcode;
                err = mod->ret;
-       } else {
-               /* mimic kernel behavior here */
+       } else if (module_is_inkernel(modname)) {
+               err = -1;
+               errno = EEXIST;
+       } else
                err = 0;
-       }
 
        if (err == 0)
                create_sysfs_files(modname);
@@ -243,4 +269,7 @@ void free_resources(void)
                free(modules);
                modules = mod;
        }
+
+       if (ctx)
+               kmod_unref(ctx);
 }