Solaris Dynamic Tracing Guide

System Call Anachronisms

In some cases, the name of the system call as provided by the syscall provider is actually a reflection of an ancient implementation detail. For example, for reasons dating back to UNIXTM antiquity, the name of exit(2) in /etc/name_to_sysnum is rexit. Similarly, the name of time(2) is gtime, and the name of both execle(2) and execve(2) is exece.