Solaris Dynamic Tracing Guide

Private System Calls

Some system calls are private implementation details of Solaris subsystems that span the user-kernel boundary. As such, these system calls do not have man pages in Section 2. Examples of system calls in this category include the signotify system call, which is used as part of the implementation of POSIX.4 message queues, and the utssys system call, which is used to implement fuser(1M).