For those looking for a more explanative text on adding a system call to OpenSolaris, Sun Labs' Eric Schrock covered this topic in his blog:
<http://blogs.sun.com/eschrock/date/20050614> he also contributed the same information to Appendix B of the second edition of "Solaris Internals" by Richard McDougall and Jim Mauro: <http://safari.oreilly.com/0131482092> <http://www.amazon.com/Solaris-Internals-TM-OpenSolaris-Architecture/dp/0131482092> William Kucharski