kernel/module/sysfs.c

72 static void add_sect_attrs(struct module *mod, const struct load_info *info)
116 	if (sysfs_create_group(&mod->mkobj.kobj, &sect_attrs->grp))
119 	mod->sect_attrs = sect_attrs;
125 static void remove_sect_attrs(struct module *mod)
127 	if (mod->sect_attrs) {
128 		sysfs_remove_group(&mod->mkobj.kobj,
129 				   &mod->sect_attrs->grp);
134 		free_sect_attrs(mod->sect_attrs);
135 		mod->sect_attrs = NULL;
172 static void add_notes_attrs(struct module *mod, const struct load_info *info)
179 	if (!mod->sect_attrs)
204 			nattr->attr.name = mod->sect_attrs->attrs[loaded].battr.attr.name;
214 	notes_attrs->dir = kobject_create_and_add("notes", &mod->mkobj.kobj);
223 	mod->notes_attrs = notes_attrs;
230 static void remove_notes_attrs(struct module *mod)
232 	if (mod->notes_attrs)
233 		free_notes_attrs(mod->notes_attrs, mod->notes_attrs->notes);
237 static inline void add_sect_attrs(struct module *mod, const struct load_info *info) { }
238 static inline void remove_sect_attrs(struct module *mod) { }
239 static inline void add_notes_attrs(struct module *mod, const struct load_info *info) { }
240 static inline void remove_notes_attrs(struct module *mod) { }
243 static void del_usage_links(struct module *mod)
249 	list_for_each_entry(use, &mod->target_list, target_list)
250 		sysfs_remove_link(use->target->holders_dir, mod->name);
255 static int add_usage_links(struct module *mod)
262 	list_for_each_entry(use, &mod->target_list, target_list) {
264 					&mod->mkobj.kobj, mod->name);
270 		del_usage_links(mod);
275 static void module_remove_modinfo_attrs(struct module *mod, int end)
280 	for (i = 0; (attr = &mod->modinfo_attrs[i]); i++) {
286 		sysfs_remove_file(&mod->mkobj.kobj, &attr->attr);
288 			attr->free(mod);
290 	kfree(mod->modinfo_attrs);
293 static int module_add_modinfo_attrs(struct module *mod)
300 	mod->modinfo_attrs = kzalloc((sizeof(struct module_attribute) *
303 	if (!mod->modinfo_attrs)
306 	temp_attr = mod->modinfo_attrs;
308 		if (!attr->test || attr->test(mod)) {
311 			error = sysfs_create_file(&mod->mkobj.kobj,
323 		module_remove_modinfo_attrs(mod, --i);
325 		kfree(mod->modinfo_attrs);
329 static void mod_kobject_put(struct module *mod)
333 	mod->mkobj.kobj_completion = &c;
334 	kobject_put(&mod->mkobj.kobj);
338 static int mod_sysfs_init(struct module *mod)
344 		pr_err("%s: module sysfs not initialized\n", mod->name);
349 	kobj = kset_find_obj(module_kset, mod->name);
351 		pr_err("%s: module is already loaded\n", mod->name);
357 	mod->mkobj.mod = mod;
359 	memset(&mod->mkobj.kobj, 0, sizeof(mod->mkobj.kobj));
360 	mod->mkobj.kobj.kset = module_kset;
361 	err = kobject_init_and_add(&mod->mkobj.kobj, &module_ktype, NULL,
362 				   "%s", mod->name);
364 		mod_kobject_put(mod);
370 int mod_sysfs_setup(struct module *mod,
377 	err = mod_sysfs_init(mod);
381 	mod->holders_dir = kobject_create_and_add("holders", &mod->mkobj.kobj);
382 	if (!mod->holders_dir) {
387 	err = module_param_sysfs_setup(mod, kparam, num_params);
391 	err = module_add_modinfo_attrs(mod);
395 	err = add_usage_links(mod);
399 	add_sect_attrs(mod, info);
400 	add_notes_attrs(mod, info);
405 	module_remove_modinfo_attrs(mod, -1);
407 	module_param_sysfs_remove(mod);
409 	kobject_put(mod->holders_dir);
411 	mod_kobject_put(mod);
416 static void mod_sysfs_fini(struct module *mod)
418 	remove_notes_attrs(mod);
419 	remove_sect_attrs(mod);
420 	mod_kobject_put(mod);
423 void mod_sysfs_teardown(struct module *mod)
425 	del_usage_links(mod);
426 	module_remove_modinfo_attrs(mod, -1);
427 	module_param_sysfs_remove(mod);
428 	kobject_put(mod->mkobj.drivers_dir);
429 	kobject_put(mod->holders_dir);
430 	mod_sysfs_fini(mod);
433 void init_param_lock(struct module *mod)
435 	mutex_init(&mod->param_lock);