HP UX 11i v1 I/O Cards manual Send no wait, report errors, Send no wait, definite status

			ZCOM C I/F Library Routines
			ZCNTL (3X)
Threads	This routine may be called from a multi-threaded application using the
Considerations	POSIX (1003.1c) kernel threads API package. This routine has the
	following characteristics when called by a multi-threaded application:
	cancellation point	Thread cancellation can occur when a thread calls this
		routine.
	async-cancel unsafe	The calling thread’s cancelability type must be
		PTHREAD_CANCEL_DEFERRED if cancellation is
		enabled.
	async-signal unsafe	It cannot be called from a signal handler.
	fork unsafe	It cannot be called by a child process after fork(2) but
		before exec(2).
	See the NOTES section for more information on using this routine in a
	multi-threaded application.
PARAMETERS
zap	Pointer to terminal ZCOM address. The destination where the control message is
	sent.
mode	Completion control:
	ZMODE_NO_WAIT		(0) - Send no wait
	ZMODE_RPT_ERRS		(1) - Send no wait, report errors
	ZMODE_DEF_STATUS		(2) - Send no wait, definite status
	ZMODE_RPT_ERRS_WBUF		(5) - Send no wait, report errors with buffer
	ZMODE_DEF_STATUS_WBUF		(7) - Send no wait, definite status and buffer
	ZMODE_WAIT		(8) - Send and await status in rstat

Modes 5 and 7 are only meaningful when rcode is 3.

Some bits (when set) in the mode parameter can cause zcntl to behave differently. Refer to the NOTES section in zsend(3X) for details.

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