Symbol: TS_IOCWAIT
usr/src/uts/common/sys/ldterm.h
277
#define TS_IOCWAIT 0x00080000 /* waiting for reply to ioctl message */
usr/src/uts/common/sys/ttcompat.h
88
#define TS_IOCWAIT 0x08 /* waiting for an M_IOCACK/M_IOCNAK from downstream */