ACC Programmer's Reference Guide

242 Chapter4

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 ZL U associa ted 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 a re required f or t he

system. They are named as pzluNNNNN,whereNNNNN is a number

ranging from 00001 to 99999 . The firs t program ZLU is associated with

pzlu00001, the second one is associated with pzlu00002,etc.(E.g.ina

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

subsystemonanasneededbasis.

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