Day One

Introduction to the class

• Applications for z/OS UNIX
• Setting the stage: A Level Set
• Setting the stage: Skills to Acquire
• The Ubiquitousness of C
• Computer Exercise:  Class Lab Set Up

File Access in z/OS UNIX Applications

• What We Already Know
• C functions for accessing QSAM and HFS files
• COBOL – QSAM access
• COBOL – native access to HFS files
• PL/I – accessing QSAM and HFS files
• Assembler – accessing QSAM and HFS files
• Computer Exercise:  Accessing HFS files under OMVS

Interacting with the user at the OMVS terminal

• COBOL – Using DISPLAY and ACCEPT
• PL/I – Using PUT LIST and GET EDIT
• C printf() and scanf() functions – an introduction
• The CALL interface
• Function references
• Interpreting C language descriptions
• Computer Exercise:  Using printf() and scanf() – C programmers only

Calling C functions from COBOL

• General notes
• fopen(), fread(), fwrite(), fclose(), printf(), scanf()
• Computer Exercise:  Using printf() and scanf() – COBOL programmers only

Calling C functions from PL/I

• General notes
• fopen(), fread(), fwrite(), fclose(), printf(), scanf()
• Computer Exercise:  Using printf() and scanf() – PL/I programmers only

Calling C functions from Assembler

• General notes
• fopen(), fread(), fwrite(), fclose(), printf(), scanf()
• Computer Exercise:  Using printf() and scanf() – Assembler programmers only

Day Two

Compiling / Assembling, and binding Under OMVS

• Compiling and binding under OMVS
• Archive libraries
• Shell commands: ar
• C370LIBs
• Shell commands: c89
• Computer Exercise:  Using c89 to compile and bind
• Computer Exercise:  Using c89 to Assemble and bind

Assembling – a new alternative

• The as command
• Computer Exercise:  Using as to Assemble a program

Compiling COBOL and binding executables

• Shell commands: cob2
• Computer Exercise:  Using cob2 to Compile and bind

Compiling PL/I and binding executables

• Shell commands: pli
• Computer Exercise:  Using pli to Compile and bind

Binding: the ld command

• Shell commands: ld
• Computer Exercise (Optional., for Assembler programmers): Bind a module

Introduction to Callable UNIX services

• Dynamic calls
• Callable UNIX services
• The BPX1LOD service
• Assembler calling BPX1LOD
• COBOL calling BPX1LOD
• PL/I calling BPX1LOD
• C calling BPX1LOD
• A selection of callable services
• BPX1… services, concluded
• Computer Exercise:  Dynamic calls

Day Three

Parms and Environment Variables

• How the PARM field is set up
• Accessing the PARM field – Assembler
• Accessing the PARM field – COBOL
• Accessing the PARM field – PL/I
• Accessing the PARM field – C
• Accessing the PARM field using CEE3PRM and CEE3PR2
• Parms for subroutines
• The PARM set up under the shell
• Accessing the parm from a program run under the shell
• Determining the environment (CEE3INF)
• Using Environment Variables Under the Shell
• C functions clearenv(), getenv(), putenv(), setenv()
• Using the CEEENV callable LE service
• Computer Exercise:  Working With Environment Variables

Managing Applications: Scripts and make

• Application management
• Using shell scripts for application management
• make – the big picture
• Introduction to makefiles
• Makefiles by example
• Computer Exercise:  Basic Makefiles

Archive files and make syntax

• Archive files and make
• Target attributes
• Designing makefiles
• Recursive make
• Include files for make
• Special target directives
• The syntax for make
• Computer Exercise:  Combining makefiles

More on make

• Target lines: rule operators
• Runtime macros
• Command line prefixes
• Group recipes
• Special target directives, revisited
• Macro modifiers
• Conditionals
• Conclusion

Appendices

• Source programs
• HFS File I/O and C Functions
• Kernel functions for working with HFS files
• HFS File I/O and integrity
• Make and inference rules

Index