For file owner class

The file owner class consists of the user who created the file or who currently owns the file. The user is identified by an OMVS user ID (UID).
SIRUSR
Specifies permission for the file owner to read the file.
SIWUSR
Specifies permission for the file owner to write the file.
SIXUSR
Specifies permission for the file owner either:
  • To search, if the file is a directory
  • To execute the program in the file, for a file other than a directory
SIRWXU
Specifies permission for the file owner either:
  • To read, write, and search, if the file is a directory
  • To read, write, and execute, for a file other than a directory

This value has the same effect as specifying all three parameters (SIRUSR, SIWUSR, and SIXUSR).