Reference Guide

ZCOM C I/F Library Routines
ZINFO (3X)
Chapter 4236
ZINFO (3X)
NAME zinfo – Get ZCOM table information
SYNOPSIS
#include <zcom/zcomsys.h>
#include <zcom/zcomcall.h> /* if compiled with ANSI C (recommended) */
int32 zinfo (zap, mode, ibuf, len)
zaddr_type *zap;
unit32 mode;
char *ibuf;
int32 len;
DESCRIPTION Routine zinfo is used to retrieve the contents of various ZCOM
subsystem tables. Depending on the mode selected, it retrieves
information such as the System Header, Interface Table, Logical and
Physical Terminal Tables, ZLU descriptor table, or Node Entry table.
The libraries libzcom_c.a and libpthread.a must be linked into the calling
program by giving the options “-lzcom_c -lpthread” to cc(1) or ld(1).
Threads
Considerations
This routine may be called from a multi-threaded application using the
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 below for more
information on using this routine in a
multi-threaded application.