Figure 2. Changed Callable Services
Callable
Service
Name Description Support
initUSP If no OMVS segment is found in the user's
profile, the initUSP service checks the
BPX.DEFAULT.USER profile in the FACILITY
class. This profile may contain a user ID in its
application data field that provides a default
OMVS segment. If this default is found, it is
used to set the UID, HOME, and PROGRAM
for the user.
If no OMVS segment is found in the group
profile of the user's current connect group, the
initUSP service checks the
BPX.DEFAULT.USER profile in the FACILITY
class. This profile may contain a group ID in
the application data field that provides a default
OMVS segment. If this default is found, it is
used to set the GID for the user.
If any defaults are used by initUSP, a bit is set
in the resulting USP to indicate that this is the
default Open Edition security environment. Any
audit records written by subsequent RACF
callable services reflect this.
Default
USER/GROUP
OMVS
Segment
getGMAP If getGMAP is given a group ID as input and
the corresponding GROUP profile has no
OMVS segment, getGMAP checks the
BPX.DEFAULT.USER profile in the FACILITY
class. This profile may contain a group ID in its
application data field that provides a default
OMVS segment. If this default is found, its GID
is returned to the issuer of getGMAP.
Default
USER/GROUP
OMVS
Segment
getUMAP If getUMAP is given a user ID as input and the
corresponding USER profile has no OMVS
segment, getUMAP checks the
BPX.DEFAULT.USER profile in the FACILITY
class. This profile may contain a user ID in its
application data field that provides a default
OMVS segment. If this default is found, its UID
is returned to the issuer of getUMAP.
Default
USER/GROUP
OMVS
Segment
Class Descriptor Table (CDT)

Figure 3 lists new classes provided in the IBM-supplied class descriptor table

(ICHRRCDX). The class names are general-use programming interfaces (GUPI) for

ICHEINTY and RACROUTE. There is a set of entries corresponding to the new

classes added in the IBM-supplied router tables.

12 OS/390 V2R4.0 Security Server (RACF) Planning: Installation and Migration