IBM S544-5285-01 User Exit Search Order, Attributes Input Print File, Non-Zero Return, Codes

EOF (Byte 19)

An end-of-file (EOF) indicator. This indicator is a 1-byte character signals when ACIF has finished writing the resource file.

When EOF is signalled (EOF value = “Y”), the last record has alread presented to the resource exit. The pointer RECORD@ is no longer va Records cannot be inserted when EOF is signalled. The following are valid values for this parameter:

Y Specifies that the last record has been written.

NSpecifies that the last record has not been written.

This end-of-file flag, used as a last-call indicator, returns control exit program cannot change this parameter.

User Exit Search Order

When ACIF loads a specified user exit program during initialization, th system determines the search order and method used to locate these modules.

OS/390 or MVS

Exit load modules can reside in a load library used as STEPLIB, JOBLI system library. ACIF uses the standard OS/390 or MVS search order to exit load module; that is, it looks first in the STEPLIB, then in the finally in the system libraries.

VM

ACIF uses standard	CMS search order to locate the specified user ex
module; thatnameis,.TEXT	or name.TEXTLIB .

VSE

Exit load modules are located in the library defined by the // LIBD

PHASE,SEARCH =(...) JCL statement.

Non-Zero Return	Codes
	If	ACIF	receives a non-zero return code from any exit, it issues mes
	and	terminates		processing.
Attributes of	the	Input	Print	File

ACIF provides information about the attributes of the input print file structure available to ACIF's user exits. Figure 34 on page 131 shows of this data structure.

130 ACIF User’s Guide