Darwin is a BSD unix 9298
That requirement is met, regardless if one even disagrees with you that it is a requirement. As I posted on the 21st of this month:
"XNU, the kernel, is derived from a number of sources, particularly Mach 3.0 and FreeBSD 5.x.
Mach The core of the XNU kernel, Mach, provides kernel threads, message-pbutting (used in inter-process communication), protected memory, virtual memory management, real-time support, kernel debugging support,
and console I-O. The Mach component also allows the OS to host binaries
for multiple distinct CPU architectures within a single file (such as x86 and PowerPC) due to its use of the Mach-O binary format.
BSD The BSD portion of the kernel provides the POSIX API (BSD system calls), the process model, basic security policies, user ids, permissions, the networking code, the virtual filesystem code (including a filesystem independent journalling layer), cryptographic framework, System V IPC, and some of the locking primitives."
Darwin is a BSD unix 9299
TheLetterK When they say the Xnu kernel is derived from FreeBSD 5.x, they mean the kernel in Free BSD 5.x is the source. I'll buttume you asked that...
End of quoted material.
Mac OS X uses the Xnu kernel which is a fusion of the BSD kernel and the Mach kernel
Any facts that disagree with your opinions are "irrelevant?"