Reference Guide

ZCOM C I/F Library Routines
ZLTMG (3X)
Chapter 4 243
ZLTMG (3X)
NAME zltmg – Move a logical terminal between groups
SYNOPSIS
#include <zcom/zcomsys.h>
#include <zcom/zcomcall.h> /* if compiled with ANSI C (recommended) */
int32 zltmg (zap, nap)
zaddr_type *zap;
zaddr_type *nap;
DESCRIPTION Routine zltmg moves the logical terminal associated with a terminal
ZLU to a new group of logical terminals designated by another terminal
ZLU. The first terminal must not be the only terminal linked in its
existing group.
After a successful move, the moved terminal will be a member of the new
group, and its MUX, PORT, and physical terminal linkage are modified
to match the new group.
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).