HP Advanced Communications Controllers (ACC) manual Async-cancel, Unsafe, Async-signal

		ZCOM C I/F Library Routines
		ZLUOPEN (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	The calling thread’s cancelability type must be
	unsafe	PTHREAD_CANCEL_DEFERRED if cancellation
		is enabled.
	async-signal	It cannot be called from a signal handler.
	unsafe
	fork unsafe	It cannot be called by a child process after fork(2)
		but before exec(2).
PARAMETERS
	zap	ZCOM address (checksum is not used). Node must
		be zero or contain the local node as defined in the
		TTGEN configuration file.
	mode	Open mode. Parameter is not used and should be
		specified as zero.
	fd	Returned file descriptor. If zluopen is returned
	(Return Param) with error, this return parameter is undefined.
RETURN VALUE	Routine zluopen returns 0 if successful. Otherwise, a non-zeroerror
	code is returned. See /opt/acc/include/zcom/zcomsys.h for the list of
	ZCOM error codes and their meanings.
EXAMPLE	#include	<zcom/zcomsys.h>
	#include	<zcom/zcomcall.h>
	int32	ierr;
	zaddr_type	zaddr;
	int	mode;
	int	fd;

if (ierr = zluopen (&zaddr, mode, &fd)) { /* error return code */

}

else {

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