Purpose of this information: This document describes the
features and usage requirements for the z/OS UNIX System Services (z/OS UNIX) callable
services. These services are interfaces between the z/OS® operating system and standard (POSIX or
Single UNIX Specification) programming
functions that require operating system services. For example, programmers
creating runtime library programs use these services. This book also
describes callable services that are not related to the standard interfaces.
Who should read this information? System programmers coding
programs in assembler can use these callable services to obtain the
z/OS UNIX services
they need. This document contains detailed information (such as the
function, requirements, syntax, linkage information, parameters, and
usage information) that is needed to use the services. You will also
find information about:
- System control offsets to callable services
- Mapping macros
- Callable service examples
- The relationship of signals to callable services
- Using threads with callable services
- Optimizing performance using process-level and thread-level information
- Callable services available to SRB mode routines
- z/OS UNIX process
start/end exits
- Accessibility features
- Notices
- An index