Date: Sat, 9 Sep 2006 16:14:14 +0100 (BST) From: Robert Watson <rwatson@FreeBSD.org> To: Mike Meyer <mwm-keyword-freebsdhackers2.e313df@mired.org> Cc: freebsd-hackers@freebsd.org, Eder <ederbs.hackers@gmail.com> Subject: Re: The nature of kernel of the FreeBSD Message-ID: <20060909160627.S87517@fledge.watson.org> In-Reply-To: <17663.23716.86762.794346@bhuda.mired.org> References: <2699850609061520wad7f0f2s7b402fb7789336ff@mail.gmail.com> <17663.23716.86762.794346@bhuda.mired.org>
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On Wed, 6 Sep 2006, Mike Meyer wrote: > In <2699850609061520wad7f0f2s7b402fb7789336ff@mail.gmail.com>, Eder <ederbs.hackers@gmail.com> typed: >> A doubt, >> >> Kernel of the FreeBSD is monolithic, correct !!! > > Correct. > >> The MacOS is derived from kernel of the FreeBSD, correct !!! > > Not correct. The MacOS kernel is derived from Mach, not FreeBSD. > > The MacOS userland is mostly derived from FreeBSD, but includes tools from > the other BSDs, and the current direction is to mimic the Linux userland > (i.e. /bin/sh is bash). http://fxr.watson.org/fxr/source/?v=xnu-792.6.70 I can't help but wonder: has anyone participating in this thread read any of the XNU source code other than me? Take a look at two subtrees in particular: bsd/ FreeBSD-derived kernel BSD subsystem, including network stack and VFS osfmk/ Mach-derived VM, scheduler The current BSD code in Darwin differs significantly from current FreeBSD, but clearly has similar roots. You'll even find Julian's devfs. Robert N M Watson Computer Laboratory University of Cambridge
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