Abstract for TSO/E Programming Services

This information supports z/OS (5650-ZOS).

Purpose of this information

This information describes the services that TSO/E provides for use in writing system and application programs.

Who should use this information

This information is intended for:

Application programmers who design and write programs that run under TSO/E.
System programmers who must modify TSO/E to suit the needs of their installation.

You must be familiar with MVS™ programming conventions, the assembler language, and the structure of TSO/E.

Before using this information, read z/OS TSO/E Programming Guide which describes how to write a Command Processor and how to compile, assemble, execute and test a program in the TSO/E environment.

How this information is organized

The topics of this information and their purposes are as follows:

Introduction gives an overview of the services provided by TSO/E and discusses the types of programs that can be written using TSO/E.
Considerations for using TSO/E services describes how to determine the version and release of TSO/E installed on your system, and explains programming considerations for MVS and the interface to the TSO/E service routines.
Using the TSO/E Environment Service IKJTSOEV describes how to use the TSO/E Environment Service to establish a TSO/E environment outside of the TSO/E TMP and Service Routines.
Invoking TSO/E service routines with CALLTSSR describes how to use the CALLTSSR macro instruction to invoke certain TSO/E service routines.
Verifying subcommand names with IKJSCAN describes how to validate command and subcommand names.
Verifying command and subcommand operands with parse describes how to validate command and subcommand operands.
Using the terminal control macro instructions describes how to control terminal functions and attributes.
Using BSAM or QSAM for terminal I/O describes how to use the basic sequential and queued sequential access methods in programs that operate under TSO/E.
Using the TSO/E I/O service routines for terminal I/O describes how to use the STACK, GETLINE, PUTLINE and PUTGET service routines in a Command Processor.
Using the TGET/TPUT/TPG macro instructions for terminal I/O describes how to use the TGET/TPUT/TPG macro instructions in a program to perform terminal I/O.
Using the TSO/E message handling routine IKJEFF02 describes how to use IKJEFF02 in a Command Processor to issue messages.
Using the STAX service routine to handle attention interrupts describes how to use the STAX service routine in a program to process attention interruptions.
Using the CLIST attention facility describes how to use the CLIST attention facility to process a CLIST's attention exit.
Obtaining a List of data set names describes how a program can use ICQGCL00 to obtain a list of data set names that match specified criteria.
Using the space management CLIST ICQSPC00 describes how a program can use ICQSPC00 to ensure that data sets have adequate free space.
Using IKJADTAB to change alternative library environments describes how to use IKJADTAB to create and remove alternative library environments and to modify alternative library definitions.
Using the dynamic allocation interface routine DAIR describes how to use DAIR in a Command Processor to allocate, free, concatenate and deconcatenate data sets during program execution.
Using IKJEHCIR to retrieve system catalog information describes how to use IKJEHCIR to retrieve information from the system catalog.
Constructing a fully-qualified data set name with IKJEHDEF describes how a Command Processor can use IKJEHDEF to construct a fully-qualified data set name.
Using the DAIRFAIL routine IKJEFF18 describes how to use the DAIRFAIL routine to analyze return codes from dynamic allocation (SVC 99) or DAIR.
Analyzing error conditions with GNRLFAIL/VSAMFAIL describes how to use the GNRLFAIL/VSAMFAIL routine to analyze error conditions and issue appropriate error messages.
Using the table look-up service IKJTBLS describes how to use the table look-up service to search the lists of authorized commands and programs and commands not supported in the background.
Using the TSO/E Service Facility IKJEFTSR describes how an unauthorized program can use the TSO/E Service Facility to invoke other programs, commands, REXX execs and CLISTs, regardless of whether the invoked function is authorized.
Using the variable access routine IKJCT441 describes how a program can use IKJCT441 to examine and manipulate CLIST and REXX variables.
Accessing the Information Center Facility names directory describes how to use TSO/E program ICQCAL00 to access the Information Center Facility names directory.
Using the printer support CLISTs describes how to use the printer support CLISTs to select printers and print data sets on selected printers.
Invoking an Information Center Facility application describes how to use the application invocation function to invoke an application that is integrated into the Information Center Facility.
Using the GETMSG service describes how to use the GETMSG service to retrieve system messages issued during a console session.
Using the Unauthorized Resource Processor Service IKJURPS describes how applications that execute in a TSO/E environment can get control within the TSO/E terminal monitor program (TMP).
Limits for TSO/E service routines describes the limits imposed by TSO/E services.

How to use this information

If you have never used this information, read Introduction to become familiar with the programming services that TSO/E provides. Then read the topic that discusses the service you want to use.