DTrace in Leopard blinded by proc flag

Adam Leventhal made an interesting observation while using Dtrace on Mac OS X and wrote about his findings in“Mac OS X and the missing probes”. According to this articles, Apple do not allow the dtrace-ing of all processes. Whenever a process has the flag “P_LNOATTACH” you can´t look into it with dtrace. Perhaps, they are in fear of disabling or examination of certain DRM functions for example. It leaves a very bad aftertaste. But as Darran Moffat wrote in the comments: “Now we just need a port of mdb so that the proc flags can be changed :-).” ;)