The cartridge entry installation exit must reside in load module
CBRUXENT. It is invoked by OAM by way of the MVS LINK macro and must
reside in a library in the LNKLST concatenation. The installation
exit can be executed above or below the 16-MB line. If multiple tape
libraries are defined to the system, the installation exit must be
coded and link-edited on the system as reentrant.
Note: CBRUXENT is invoked out of the master address space when it
is driven as a result of the LIBRARY ENTER command (for manual cartridge
entry processing).
The following characteristics describe the execution environment
in which the cartridge entry installation exit is invoked:
- Task mode
- Unlocked
- Noncross memory mode (HASN = PASN = SASN)
- The addressing mode specified when the exit was linkage edited
- Primary ASC mode (not AR mode)
- Key 5, problem state; or a user key, supervisor state
Rule: Mapping macro CBRUXEPL must be
included by the installation exit.