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
250 	if (!func->old_addr || klp_is_module(obj))  in klp_find_verify_func_addr()
251 		ret = klp_find_object_symbol(obj->name, func->old_name,  in klp_find_verify_func_addr()
284 					struct klp_object *obj)  in klp_write_object_relocations()  argument
289 	if (WARN_ON(!klp_is_object_loaded(obj)))  in klp_write_object_relocations()
292 	if (WARN_ON(!obj->relocs))  in klp_write_object_relocations()
295 	for (reloc = obj->relocs; reloc->name; reloc++) {  in klp_write_object_relocations()
296 		if (!klp_is_module(obj)) {  in klp_write_object_relocations()
314 				ret = klp_find_object_symbol(obj->mod->name,  in klp_write_object_relocations()
438 static void klp_disable_object(struct klp_object *obj)  in klp_disable_object()  argument
442 	klp_for_each_func(obj, func)  in klp_disable_object()
446 	obj->state = KLP_DISABLED;  in klp_disable_object()
449 static int klp_enable_object(struct klp_object *obj)  in klp_enable_object()  argument
454 	if (WARN_ON(obj->state != KLP_DISABLED))  in klp_enable_object()
457 	if (WARN_ON(!klp_is_object_loaded(obj)))  in klp_enable_object()
460 	klp_for_each_func(obj, func) {  in klp_enable_object()
463 			klp_disable_object(obj);  in klp_enable_object()
467 	obj->state = KLP_ENABLED;  in klp_enable_object()
474 	struct klp_object *obj;  in __klp_disable_patch()  local
483 	klp_for_each_object(patch, obj) {  in __klp_disable_patch()
484 		if (obj->state == KLP_ENABLED)  in __klp_disable_patch()
485 			klp_disable_object(obj);  in __klp_disable_patch()
527 	struct klp_object *obj;  in __klp_enable_patch()  local
543 	klp_for_each_object(patch, obj) {  in __klp_enable_patch()
544 		if (!klp_is_object_loaded(obj))  in __klp_enable_patch()
547 		ret = klp_enable_object(obj);  in __klp_enable_patch()
693 static void klp_free_funcs_limited(struct klp_object *obj,  in klp_free_funcs_limited()  argument
698 	for (func = obj->funcs; func->old_name && func != limit; func++)  in klp_free_funcs_limited()
703 static void klp_free_object_loaded(struct klp_object *obj)  in klp_free_object_loaded()  argument
707 	obj->mod = NULL;  in klp_free_object_loaded()
709 	klp_for_each_func(obj, func)  in klp_free_object_loaded()
720 	struct klp_object *obj;  in klp_free_objects_limited()  local
722 	for (obj = patch->objs; obj->funcs && obj != limit; obj++) {  in klp_free_objects_limited()
723 		klp_free_funcs_limited(obj, NULL);  in klp_free_objects_limited()
724 		kobject_put(&obj->kobj);  in klp_free_objects_limited()
736 static int klp_init_func(struct klp_object *obj, struct klp_func *func)  in klp_init_func()  argument
742 				    &obj->kobj, "%s", func->old_name);  in klp_init_func()
747 				  struct klp_object *obj)  in klp_init_object_loaded()  argument
752 	if (obj->relocs) {  in klp_init_object_loaded()
753 		ret = klp_write_object_relocations(patch->mod, obj);  in klp_init_object_loaded()
758 	klp_for_each_func(obj, func) {  in klp_init_object_loaded()
759 		ret = klp_find_verify_func_addr(obj, func);  in klp_init_object_loaded()
767 static int klp_init_object(struct klp_patch *patch, struct klp_object *obj)  in klp_init_object()  argument
773 	if (!obj->funcs)  in klp_init_object()
776 	obj->state = KLP_DISABLED;  in klp_init_object()
777 	obj->mod = NULL;  in klp_init_object()
779 	klp_find_object_module(obj);  in klp_init_object()
781 	name = klp_is_module(obj) ? obj->name : "vmlinux";  in klp_init_object()
782 	ret = kobject_init_and_add(&obj->kobj, &klp_ktype_object,  in klp_init_object()
787 	klp_for_each_func(obj, func) {  in klp_init_object()
788 		ret = klp_init_func(obj, func);  in klp_init_object()
793 	if (klp_is_object_loaded(obj)) {  in klp_init_object()
794 		ret = klp_init_object_loaded(patch, obj);  in klp_init_object()
802 	klp_free_funcs_limited(obj, func);  in klp_init_object()
803 	kobject_put(&obj->kobj);  in klp_init_object()
809 	struct klp_object *obj;  in klp_init_patch()  local
824 	klp_for_each_object(patch, obj) {  in klp_init_patch()
825 		ret = klp_init_object(patch, obj);  in klp_init_patch()
837 	klp_free_objects_limited(patch, obj);  in klp_init_patch()
914 				     struct klp_object *obj)  in klp_module_notify_coming()  argument
917 	struct module *mod = obj->mod;  in klp_module_notify_coming()
920 	ret = klp_init_object_loaded(patch, obj);  in klp_module_notify_coming()
933 	ret = klp_enable_object(obj);  in klp_module_notify_coming()
941 				    struct klp_object *obj)  in klp_module_notify_going()  argument
944 	struct module *mod = obj->mod;  in klp_module_notify_going()
952 	klp_disable_object(obj);  in klp_module_notify_going()
955 	klp_free_object_loaded(obj);  in klp_module_notify_going()
964 	struct klp_object *obj;  in klp_module_notify()  local
981 		klp_for_each_object(patch, obj) {  in klp_module_notify()
982 			if (!klp_is_module(obj) || strcmp(obj->name, mod->name))  in klp_module_notify()
986 				obj->mod = mod;  in klp_module_notify()
987 				ret = klp_module_notify_coming(patch, obj);  in klp_module_notify()
989 					obj->mod = NULL;  in klp_module_notify()
994 				klp_module_notify_going(patch, obj);  in klp_module_notify()