148         let r = attr.show(kobj, buf).map_err(|e| {  in show()
149             if e == SystemError::ENOSYS {  in show()
152                 e  in show()
165         let r = attr.store(kobj, buf).map_err(|e| {  in store()
166             if e == SystemError::ENOSYS {  in store()
169                 e  in store()
208         if let Err(e) = r {  in add_kobj()
214             if e == SystemError::EEXIST {  in add_kobj()
218             return Err(e);  in add_kobj()
234                 if let Err(e) = r {  in create_dir()
236                     return Err(e);  in create_dir()