Doug McNaught <doug@xxxxxxxxxxxx> writes: > On Nov 27, 2007, at 8:36 PM, Gregory Stark wrote: >> I think (but I'm not sure) that the kernel in OSX comes from BSD. > Kind of. Mach is still running underneath (and a lot of the app APIs > use it directly) but there is a BSD 'personality' above it which > (AIUI) is big parts of FreeBSD ported to run on Mach. So when you use > the Unix APIs you're going through that. The one bit of the OSX userland code that I've really had my nose rubbed in is libedit, and they definitely took that from NetBSD not FreeBSD. You sure you got your BSDen straight? Some random poking around at http://www.opensource.apple.com/darwinsource/10.5/ finds a whole lot of different-looking license headers. But it seems pretty clear that their userland is BSD-derived, whereas I've always heard that their kernel is Mach-based. I've not gone looking at the kernel though. regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 4: Have you searched our list archives? http://archives.postgresql.org/
