This is xnu-6153.11.26. See this file in:
Directory listing for xnu-6153.11.26//bsd/kern
ast.h
bsd_init.c
bsd_stubs.c
chunklist.c
chunklist.h
decmpfs.c
imageboot.c
kdebug.c
kern_acct.c
kern_aio.c
kern_asl.c
kern_authorization.c
kern_backtrace.c
kern_clock.c
kern_control.c
kern_core.c
kern_credential.c
kern_cs.c
kern_csr.c
kern_descrip.c
kern_ecc.c
kern_event.c
kern_exec.c
kern_exit.c
kern_fork.c
kern_guarded.c
kern_kpc.c
kern_ktrace.c
kern_lockf.c
kern_malloc.c
kern_memorystatus.c
kern_memorystatus_freeze.c
kern_memorystatus_notify.c
kern_mib.c
kern_mman.c
kern_newsysctl.c
kern_ntptime.c
kern_overrides.c
kern_persona.c
kern_physio.c
kern_priv.c
kern_proc.c
kern_prot.c
kern_resource.c
kern_sfi.c
kern_shutdown.c
kern_sig.c
kern_subr.c
kern_symfile.c
kern_synch.c
kern_sysctl.c
kern_time.c
kern_xxx.c
kpi_mbuf.c
kpi_mbuf_internal.h
kpi_socket.c
kpi_socketfilter.c
mach_fat.c
mach_fat.h
mach_loader.c
mach_loader.h
mach_process.c
makekdebugevents.py
makesyscalls.sh
mcache.c
netboot.c
policy_check.c
posix_sem.c
posix_shm.c
proc_info.c
proc_uuid_policy.c
process_policy.c
qsort.c
socket_info.c
stackshot.c
subr_eventhandler.c
subr_log.c
subr_prf.c
subr_sbuf.c
subr_xxx.c
sys_coalition.c
sys_domain.c
sys_generic.c
sys_persona.c
sys_pipe.c
sys_reason.c
sys_socket.c
sys_ulock.c
sys_work_interval.c
syscalls.master
sysv_ipc.c
sysv_msg.c
sysv_sem.c
sysv_shm.c
trace_codes
tty.c
tty_compat.c
tty_conf.c
tty_dev.c
tty_dev.h
tty_ptmx.c
tty_pty.c
tty_subr.c
tty_tty.c
ubc_subr.c
uipc_domain.c
uipc_mbuf.c
uipc_mbuf2.c
uipc_proto.c
uipc_socket.c
uipc_socket2.c
uipc_syscalls.c
uipc_usrreq.c