IBM Version 4 manual Exit Programs, Exit Points

Note: On	2	security, QALWUSRDMN	is	set to
	a system configured forsystemC2
QTEMP	(only the QTEMP library can	contain user-domain	user	objects).

For more information about C2 security, GuiderefertotoEnablingthe C2

Securitybook, SC41-0103.

Related Information

Ÿ “Using Data Queues versus User Queues” on page A-15

ŸCreate User Index (QUSCRTUI), Create User Queue (QUSCRTUQ), an Create User Space (QUSCRTUS) APIs in the ObjectSys empartAPI of the Reference, SC41-5801

ŸChapter 2 ofSecuritythe – Reference, SC41-5302

Exit Programs

Exit programs are called and given control by an application program o program. They can be used to customize particular functions to your

exit program is a program to which control is passed from a calling pr

Exit programs are usually user-written programs; however, a few are s supplied (such as a few of the Operational Assistant exit programs).

To transfer		control	to	an exit program,	you	do an external	call as y
other	program.
There	are no general requirements for using exit programs. For any sp
requirements,		see	the	documentation for	the	specific exit	program.

Exit Points

An exit point signifies the point in a system function or program where turned over to one or more exit programs to perform a function.

Prior to Version 3 Release 1, the exit program might have been re network attributes, system values, CL command parameters, or attributes objects. Also, in previous releases, all exit point providers had to means of registering and deregistering exit programs.

The registration facility provides a central point to store and retrieve in about OS/400 and non-OS/400 exit points and their associated exit progr information is stored in the registration facility repository and can

determine		which	exit		points and exit		programs	already exist.
You	can	use the		registration		facility	APIs to	register and deregis
add	and	remove	exit		programs, and to retrieve information about exit
exit	programs. You can also perform some of these functions by using
with	Registration			Information		(WRKREGINF)	command.

2 C2 is a level of security TrusteddefinedComputerin theSystem Evaluation Criteria(TCSEC) published by the United States Government.

Chapter 2. Getting Started with2-27APIs