HelenOS sources

DEVMAN_DEV_GET_PARENT  602 uspace/lib/device/src/devman.c 	errno_t retval = async_req_1_1(exch, DEVMAN_DEV_GET_PARENT,
DEVMAN_DEV_GET_PARENT  765 uspace/srv/devman/client_conn.c 		case DEVMAN_DEV_GET_PARENT:
HelenOS homepage, sources at GitHub