streamtab

The streamtab(9S) structure contains pointers to the structures that hold the routines that actually initialize the reading and writing for a module.

If streamtab is NULL, there are no STREAMS routines and the entire driver is treated as though it was a non-STREAMS driver. The streamtab(9S) indirectly identifies the appropriate open, close, put, service, and administration routines. These driver and module routines should generally be declared static.

struct streamtab {
		struct qinit     *st_rdinit;      /* defines read queue */
		struct qinit     *st_wrinit;      /* defines write queue */
		struct qinit     *st_muxrinit;    /* for multiplexing */
		struct qinit     *st_muxwinit;    /* drivers only */
};