HP UX 11i v1 I/O Cards manual 242

ZCOM C I/F Library Routines

ZLUOPEN (3X)

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 {
	/* good return code */
	}
NOTES	The ZLU associated device files are kept in the /dev/zcom directory, and
	should only be opened by zluopen. If they are opened and accessed
	directly, incorrect results may be returned.
	Currently, only device files for program ZLUs are required for the
	system. They are named as pzluNNNNN, where NNNNN is a number
	ranging from 00001 to 99999. The first program ZLU is associated with
	pzlu00001, the second one is associated with pzlu00002, etc. (E.g. in a
	system with 2000 terminal ZLUs, the first program ZLU, i.e. 2001, is
	associated with the device file /dev/zcom/pzlu00001.)
	Note that these device files are created automatically by the ZCOM
	subsystem on an as needed basis.
FILES
	/opt/acc/include/zcom/zcomsys.h			ZCOM subsystem general include file,
				containing data types, data structures,
				constants, error codes, masks, etc. Note that
				this must be the first include file before any
				other ZCOM include files.
	/opt/acc/include/zcom/zcomcall.h			ZCOM routine function prototypes (requires
				ANSI C compilation).
	/dev/zcom/pzlu*			Device files associated with program ZLUs.
SEE ALSO	select(2), close(2).

242 Chapter 4