IBM SC34-6814-04 - Manual (Page 135)

UEPFSOFB
Open for backout.
If the first byte indicates a close request (UEPFSCLS), the second
byte shows the type of close:
UEPFSNC
Normal close
UEPFSCP
Close pending
UEPFSELM
End of load mode close
UEPFSIMM
Immediate close
UEPFSICP
Immediate close pending
UEPFSQU
RLS quiesce close.
UEPFILE
Address of the 8-byte file name.
UEPFINFO
Address of a storage area containing information about the file. The
area can be mapped using the DSECT DFHUEFDS, which contains
the following fields:
UEFLNAME
The 8-character file name.
UEDSNAME
The 44-character dsname of the data set associated with
the file, if this has been set before the file request was
issued.
UEFSERV
One byte indicating the SERVREQ settings for this file. The
possible values are:
UEFRDIM
Read valid
UEFUPDIM
Update valid
UEFADDIM
Add valid
UEFDELIM
Delete valid
UEFBRZIM
Browse valid.
UEFDSJL
One byte indicating the automatic journaling options set for
this file. The possible values are:
UEFJRO
Journal read-only
Chapter 1. Global user exit programs 113