Type ASSEMBLE
Source Lines : 645
Fixes Applied : 0
Most Recent Version : Tuesday, December 12, 1978
Last Fix ID : [Unmodified]

Module

       DMSLLU  ( LISTIO )

Function

       PROVIDE THE FACILITY TO LIST I/O ASSIGNMENTS OF ONE,
       SOME, OR ALL LOGICAL UNITS IN THE CMS/DOS SUPPORT.
       OUTPUT OF THE COMMAND WILL BE DIRECTED TO THE USER'S
       CONSOLE, OR TO A CMS DISK FILE (EXEC) IF THE 'EXEC'
       OR 'APPEND' OPTION IS SPECIFIED.

Attributes

       DISK RESIDENT MODULE
       SERIALLY REUSABLE
       EXECUTES IN TRANSIENT AREA

Operation

       1. SET UP NECESSARY ADDRESSABILITIES AND SAVE
          THE RETURN REGISTER. ACQUIRE SUPERVISOR KEY
          AND INITIALIZE REUSABILITY FIELDS. VERIFY IF
          IN CMS/DOS ENVIRONMENT.

       2. CHECK THE COMMAND LINE FOR VALID ARGUMENTS
          AND OPTIONS. ENSURE THAT IF AN ARGUMENT WAS
          SPECIFIED, IT IS EITHER 'SYS', 'PROG', 'ALL',
          OR 'SYSXXX'. IF NO ARGUMENT SPECIFIED, ASSUME
          'ALL'. VERIFY THAT IF ANY OPTION IS SPECIFIED
          IT IS 'EXEC' OR 'APPEND'.

       3. IF EITHER 'EXEC' OR 'APPEND' WAS SPECIFIED, CHECK
          THAT THE 'A' DISK IS READ/WRITE. IF 'EXEC' WAS
          SPECIFIED, AN ERASE OF ANY OLD '$LISTIO EXEC' ON
          THE 'A' DISK IS ATTEMPTED.

       4. IF EITHER 'SYS' OR 'PROG' WAS SPECIFIED, THE NO.
          OF LOGICAL UNITS (SYSTEM OR PROGRMR) IS ACQUIRED
          FROM THE NICL TABLE. THEN, USING THE INFORMATION
          ON THE LUB AND PUB TABLES, THE OUTPUT BUFFER IS
          BUILT AND WRITTEN OUT.

          IF 'ALL' WAS SPECIFIED, THE TOTAL NUMBER OF UNITS
          (SYSTEM + PROGRMR) IS COMPUTED .

          IF 'SYSXXX' WAS SPECIFIED, ONLY THAT PARTICULAR
          LOGICAL UNIT IS LISTED.

       5. WHEN ALL PROCESSING HAS BEEN DONE, THE '$LISTIO
          EXEC' FILE IS CLOSED (IF 'DISK' OR 'APPEND' WAS
          SPECIFIED.

       6. A SWITCH TO PROBLEM PROGRAM KEY IS DONE, AND A
          RETURN TO THE CALLER IS MADE PASSING IN REG. 15
          THE RETURN CODE OF THE COMMAND.

Calls to Other Routines

       DMSLAD, DMSERR, DMSERS, DMSKEY
       DMSBWR, DMSCWR, DMSFNS