Systrace for Mac OS X

Niels Provos writes in that he has added Mac OS X support for Systrace, a sandboxing/application confinement tool that can be used to increase application and service security. It installs a new kernel to support /dev/systrace and the Systrace application, and a Cocoa frontend.

Replace my kernel?, but I like my kernel

[Kplusplus]

My only qualm is where is this kernel coming from and why is there no other way to run this then with a specially built kernel. Im sorry to say, but I can't just trust anything that replaces my kernel, no matter who it comes from when that person isn't my OS vendor.

Is it impossible to get teh same thing done with a kernel extension?

Re:system call tracing needs to become standard

[Rich_Morin]

I would very much like to see OSX ship with truss; in particular, I would like it to be the Solaris-style truss that can trace descendents of processes, etc. (The FreeBSD version is only a pale shadow of this.) Anyone who agrees with this wish might want to send a note to [e-mail], supporting Problem ID #3121601.