79 static bool klp_is_module(struct klp_object *obj)  in klp_is_module()  argument
81 	return obj->name;  in klp_is_module()
84 static bool klp_is_object_loaded(struct klp_object *obj)  in klp_is_object_loaded()  argument
86 	return !obj->name || obj->mod;  in klp_is_object_loaded()
90 static void klp_find_object_module(struct klp_object *obj)  in klp_find_object_module()  argument
94 	if (!klp_is_module(obj))  in klp_find_object_module()
103 	mod = find_module(obj->name);  in klp_find_object_module()
112 		obj->mod = mod;  in klp_find_object_module()
239 static int klp_find_verify_func_addr(struct klp_object *obj,  in klp_find_verify_func_addr()  argument
249 	if (!func->old_addr || klp_is_module(obj))  in klp_find_verify_func_addr()
250 		ret = klp_find_object_symbol(obj->name, func->old_name,  in klp_find_verify_func_addr()
283 					struct klp_object *obj)  in klp_write_object_relocations()  argument
288 	if (WARN_ON(!klp_is_object_loaded(obj)))  in klp_write_object_relocations()
291 	if (WARN_ON(!obj->relocs))  in klp_write_object_relocations()
294 	for (reloc = obj->relocs; reloc->name; reloc++) {  in klp_write_object_relocations()
295 		if (!klp_is_module(obj)) {  in klp_write_object_relocations()
307 				ret = klp_find_object_symbol(obj->mod->name,  in klp_write_object_relocations()
429 static void klp_disable_object(struct klp_object *obj)  in klp_disable_object()  argument
433 	for (func = obj->funcs; func->old_name; func++)  in klp_disable_object()
437 	obj->state = KLP_DISABLED;  in klp_disable_object()
440 static int klp_enable_object(struct klp_object *obj)  in klp_enable_object()  argument
445 	if (WARN_ON(obj->state != KLP_DISABLED))  in klp_enable_object()
448 	if (WARN_ON(!klp_is_object_loaded(obj)))  in klp_enable_object()
451 	for (func = obj->funcs; func->old_name; func++) {  in klp_enable_object()
454 			klp_disable_object(obj);  in klp_enable_object()
458 	obj->state = KLP_ENABLED;  in klp_enable_object()
465 	struct klp_object *obj;  in __klp_disable_patch()  local
474 	for (obj = patch->objs; obj->funcs; obj++) {  in __klp_disable_patch()
475 		if (obj->state == KLP_ENABLED)  in __klp_disable_patch()
476 			klp_disable_object(obj);  in __klp_disable_patch()
518 	struct klp_object *obj;  in __klp_enable_patch()  local
534 	for (obj = patch->objs; obj->funcs; obj++) {  in __klp_enable_patch()
535 		if (!klp_is_object_loaded(obj))  in __klp_enable_patch()
538 		ret = klp_enable_object(obj);  in __klp_enable_patch()
675 static void klp_free_funcs_limited(struct klp_object *obj,  in klp_free_funcs_limited()  argument
680 	for (func = obj->funcs; func->old_name && func != limit; func++)  in klp_free_funcs_limited()
685 static void klp_free_object_loaded(struct klp_object *obj)  in klp_free_object_loaded()  argument
689 	obj->mod = NULL;  in klp_free_object_loaded()
691 	for (func = obj->funcs; func->old_name; func++)  in klp_free_object_loaded()
702 	struct klp_object *obj;  in klp_free_objects_limited()  local
704 	for (obj = patch->objs; obj->funcs && obj != limit; obj++) {  in klp_free_objects_limited()
705 		klp_free_funcs_limited(obj, NULL);  in klp_free_objects_limited()
706 		kobject_put(obj->kobj);  in klp_free_objects_limited()
718 static int klp_init_func(struct klp_object *obj, struct klp_func *func)  in klp_init_func()  argument
724 				    obj->kobj, "%s", func->old_name);  in klp_init_func()
729 				  struct klp_object *obj)  in klp_init_object_loaded()  argument
734 	if (obj->relocs) {  in klp_init_object_loaded()
735 		ret = klp_write_object_relocations(patch->mod, obj);  in klp_init_object_loaded()
740 	for (func = obj->funcs; func->old_name; func++) {  in klp_init_object_loaded()
741 		ret = klp_find_verify_func_addr(obj, func);  in klp_init_object_loaded()
749 static int klp_init_object(struct klp_patch *patch, struct klp_object *obj)  in klp_init_object()  argument
755 	if (!obj->funcs)  in klp_init_object()
758 	obj->state = KLP_DISABLED;  in klp_init_object()
759 	obj->mod = NULL;  in klp_init_object()
761 	klp_find_object_module(obj);  in klp_init_object()
763 	name = klp_is_module(obj) ? obj->name : "vmlinux";  in klp_init_object()
764 	obj->kobj = kobject_create_and_add(name, &patch->kobj);  in klp_init_object()
765 	if (!obj->kobj)  in klp_init_object()
768 	for (func = obj->funcs; func->old_name; func++) {  in klp_init_object()
769 		ret = klp_init_func(obj, func);  in klp_init_object()
774 	if (klp_is_object_loaded(obj)) {  in klp_init_object()
775 		ret = klp_init_object_loaded(patch, obj);  in klp_init_object()
783 	klp_free_funcs_limited(obj, func);  in klp_init_object()
784 	kobject_put(obj->kobj);  in klp_init_object()
790 	struct klp_object *obj;  in klp_init_patch()  local
805 	for (obj = patch->objs; obj->funcs; obj++) {  in klp_init_patch()
806 		ret = klp_init_object(patch, obj);  in klp_init_patch()
818 	klp_free_objects_limited(patch, obj);  in klp_init_patch()
895 				     struct klp_object *obj)  in klp_module_notify_coming()  argument
898 	struct module *mod = obj->mod;  in klp_module_notify_coming()
901 	ret = klp_init_object_loaded(patch, obj);  in klp_module_notify_coming()
911 	ret = klp_enable_object(obj);  in klp_module_notify_coming()
921 				    struct klp_object *obj)  in klp_module_notify_going()  argument
924 	struct module *mod = obj->mod;  in klp_module_notify_going()
932 	klp_disable_object(obj);  in klp_module_notify_going()
935 	klp_free_object_loaded(obj);  in klp_module_notify_going()
943 	struct klp_object *obj;  in klp_module_notify()  local
960 		for (obj = patch->objs; obj->funcs; obj++) {  in klp_module_notify()
961 			if (!klp_is_module(obj) || strcmp(obj->name, mod->name))  in klp_module_notify()
965 				obj->mod = mod;  in klp_module_notify()
966 				klp_module_notify_coming(patch, obj);  in klp_module_notify()
968 				klp_module_notify_going(patch, obj);  in klp_module_notify()