session_find
fs->s = session_find(session);
as = session_find(sname);
if (sname != NULL && session_find(sname) != NULL) {
if (session_find(newname) != NULL) {
if ((con = session_find(env, cnl.id)) == NULL ||
if ((con = session_find(env, id)) == NULL) {
struct rsession *session_find(struct relayd *, objid_t);