ACC X.25 Protocol User's Guide

X.25 Application Programming
ZX25INFO (3X) — ACC X.25
Chapter 4108
ZX25INFO (3X) — ACC X.25
NAME zx25info - Set up ACC X.25 information for subsequent “zx25...” calls
SYNOPSIS
#include <zcom/zcomsys.h>
#include <zcom/zcomx25.h>
int zx25info (zxip, auxname)
zx25info_type *zxip;
char *auxname;
DESCRIPTION Routine zx25info sets up the ACC X.25 access data structure which is
used in subsequent “zx25...” calls. This routine may allocate some
internal resources. The caller is required to call zx25close(3X) to clean up
the allocated resources when the “zx25...” calls are no longer required.
The libraries libzx25.a, libzcom_c.a and libpthread.a must be linked into
the calling program by giving the “-lzx25 -lzcom_c -lpthread” options 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. It has the following
characteristics when called by multi-threaded applications:
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 that follows for more information on using this
routine in a multi-threaded application.