SMFS_OPEN
m->mf_state = SMFS_OPEN;
(m->mf_state != SMFS_OPEN && m->mf_state != SMFS_INMSG))
if (m->mf_sock < 0 || m->mf_state != SMFS_OPEN)
m->mf_state = SMFS_OPEN;
m->mf_state = SMFS_OPEN;
(m->mf_state != SMFS_OPEN && m->mf_state != SMFS_INMSG))