SID_CHAR_BUSY
((snap_ctl.sid_flags & SID_CHAR_BUSY) != 0)) {
ASSERT((snap_ctl.sid_flags & SID_CHAR_BUSY) == 0);
if ((snap_ctl.sid_flags & SID_CHAR_BUSY) != 0) {
snap_ctl.sid_flags |= SID_CHAR_BUSY;
sidp->sid_flags |= SID_CHAR_BUSY;
snap_ctl.sid_flags &= ~(SID_CHAR_BUSY);
sidp->sid_flags &= ~(SID_CHAR_BUSY);
((sidp)->sid_flags & SID_CHAR_BUSY))