Open System Services (OSS) for Guardian Developers

Module 1 – Introduction to OSS

• History of UNIX
• The POSIX standard NonStop servers that use OSS
• Guardian and OSS interface differences

Module 2 – OSS File System Basics

• Accessing OSS
• The OSS file system
• Permissions
• File types
• Typical directories

Module 3 – Basic Commands and Utilities

• Navigational and display commands
• TACL/OSS command equivalents
• Printing from OSS
• Process management
• Lab exercise: Basic commands and utilities

Module 4 – Advanced Commands and Utilities

• More advanced commands
• Redirection and piping
• Profile files environment variables
• Command line editing
• Miscellaneous commands such as grep and awk
• Lab exercise: Advanced commands and utilities

Module 5 – OSS File Editing

• The vi or vim editor
• Copying files between OSS and Guardian environments
• Text file conversion between OSS and Guardian environments
• Lab exercise: File editing

Module 6 – Command Scripting

• Command files
• Use of TACL commands from OSS
• Use of OSS commands from TACL
• Variable usage
• Aliases
• Control structures
• Functions
• Argument processing
• Tracing
• Lab exercise: Command scripting

Module 7 – OSS Development

• Tools and utilities such as c89, c99, c11, ecobol or xcobol, tar, pax, eld or xld, and enoft or xnoft
• Compiling and linking using make
• Compiling and linking for SQL/MX
• HPE NonStop Development Environment for Eclipse
• Debugging with Inspect
• Debugging with Visual Inspect
• Lab exercise: Development and Native Inspect

Module 8 – Porting Issues

• General porting considerations
• Porting design issues
• Interprocess communications features
• Pipes and FIFOs
• Performance considerations
• $RECEIVE handling
• NonStop PathSockets
• FLOSS – Freeware Look for OSS
• Lab exercise: Porting

Module 9 – OSS Subsystem Architecture

• Subsystem processes
• Subsystem files
• OSS subsystem startup
• OSS configuration overview
• The gname and pname utilities
• DEFINE usage
• Lab exercise: Architecture

Module 10 – Application Programming Interface (API) Usage

• Accessing standard POSIX system calls
• Accessing NonStop server specific extensions to the system calls
• Accessing Guardian objects from POSIX system calls
• Differentiating between the different forms of process creation calls
• Accessing Guardian procedures from within an OSS program
• Lab exercise: API usage

Module 11 – OSS Sockets Basics

• What is a socket?
• Client/server support
• Protocols and addressing
• Sockets function library
• Library headers and data structures
• OSS and Guardian sockets differences
• Lab exercise: OSS sockets