BSD syscall number and configuration index

Dispatch and catalog guide

Every declaration alternative in bsd/kern/syscalls.master appears below. Conditions preserve the preprocessor branches without selecting a product build. A reserved or disabled entry is not an available operation. Number 0 is the table's nosys entry, while architecture dispatch separately recognizes indirect syscall encoding.

Number	Master declaration / implementation catalog	Condition	Reserved/disabled annotation
0	nosys	`always`	indirect syscall
1	exit · mechanism	`always`
2	fork · mechanism	`always`
3	read · mechanism	`always`
4	write · mechanism	`always`
5	open · mechanism	`always`
6	sys_close · mechanism	`always`
7	wait4 · mechanism	`always`
8	enosys	`always`	old creat
9	link · mechanism	`always`
10	unlink · mechanism	`always`
11	enosys	`always`	old execv
12	sys_chdir · mechanism	`always`
13	sys_fchdir · mechanism	`always`
14	mknod · mechanism	`always`
15	chmod · mechanism	`always`
16	chown · mechanism	`always`
17	enosys	`always`	old break
18	getfsstat · mechanism	`always`
19	enosys	`always`	old lseek
20	getpid · mechanism	`always`
21	enosys	`always`	old mount
22	enosys	`always`	old umount
23	setuid · mechanism	`always`
24	getuid · mechanism	`always`
25	geteuid · mechanism	`always`
26	ptrace · mechanism	`always`
27	recvmsg · mechanism	`(SOCKETS)`
28	sendmsg · mechanism	`(SOCKETS)`
29	recvfrom · mechanism	`(SOCKETS)`
30	accept · mechanism	`(SOCKETS)`
31	getpeername · mechanism	`(SOCKETS)`
32	getsockname · mechanism	`(SOCKETS)`
27	nosys	`(!(SOCKETS))`	Unavailable/reserved implementation (`nosys`).
28	nosys	`(!(SOCKETS))`	Unavailable/reserved implementation (`nosys`).
29	nosys	`(!(SOCKETS))`	Unavailable/reserved implementation (`nosys`).
30	nosys	`(!(SOCKETS))`	Unavailable/reserved implementation (`nosys`).
31	nosys	`(!(SOCKETS))`	Unavailable/reserved implementation (`nosys`).
32	nosys	`(!(SOCKETS))`	Unavailable/reserved implementation (`nosys`).
33	access · mechanism	`always`
34	chflags · mechanism	`always`
35	fchflags · mechanism	`always`
36	sync · mechanism	`always`
37	kill · mechanism	`always`
38	sys_crossarch_trap · mechanism	`always`
39	getppid · mechanism	`always`
40	nosys	`always`	old lstat
41	sys_dup · mechanism	`always`
42	pipe · mechanism	`always`
43	getegid · mechanism	`always`
44	nosys	`always`	old profil
45	nosys	`always`	old ktrace
46	sigaction · mechanism	`always`
47	getgid · mechanism	`always`
48	sigprocmask · mechanism	`always`
49	getlogin · mechanism	`always`
50	setlogin · mechanism	`always`
51	acct · mechanism	`always`
52	sigpending · mechanism	`always`
53	sigaltstack · mechanism	`always`
54	ioctl · mechanism	`always`
55	reboot · mechanism	`always`
56	revoke · mechanism	`always`
57	symlink · mechanism	`always`
58	readlink · mechanism	`always`
59	execve · mechanism	`always`
60	umask · mechanism	`always`
61	chroot · mechanism	`always`
62	nosys	`always`	old fstat
63	nosys	`always`	used internally and reserved
64	nosys	`always`	old getpagesize
65	msync · mechanism	`always`
66	vfork · mechanism	`(CONFIG_VFORK)`
66	nosys	`(!(CONFIG_VFORK))`	old vfork
67	oslog_coproc_reg · mechanism	`always`
68	oslog_coproc · mechanism	`always`
69	nosys	`always`	old sbrk
70	nosys	`always`	old sstk
71	nosys	`always`	old mmap
72	nosys	`always`	old vadvise
73	munmap · mechanism	`always`
74	mprotect · mechanism	`always`
75	madvise · mechanism	`always`
76	nosys	`always`	old vhangup
77	nosys	`always`	old vlimit
78	mincore · mechanism	`always`
79	getgroups · mechanism	`always`
80	setgroups · mechanism	`always`
81	getpgrp · mechanism	`always`
82	setpgid · mechanism	`always`
83	setitimer · mechanism	`always`
84	nosys	`always`	old wait
85	swapon · mechanism	`always`
86	getitimer · mechanism	`always`
87	nosys	`always`	old gethostname
88	nosys	`always`	old sethostname
89	sys_getdtablesize · mechanism	`always`
90	sys_dup2 · mechanism	`always`
91	nosys	`always`	old getdopt
92	sys_fcntl · mechanism	`always`
93	select · mechanism	`always`
94	nosys	`always`	old setdopt
95	fsync · mechanism	`always`
96	setpriority · mechanism	`always`
97	socket · mechanism	`(SOCKETS)`
98	connect · mechanism	`(SOCKETS)`
97	nosys	`(!(SOCKETS))`	Unavailable/reserved implementation (`nosys`).
98	nosys	`(!(SOCKETS))`	Unavailable/reserved implementation (`nosys`).
99	nosys	`always`	old accept
100	getpriority · mechanism	`always`
101	nosys	`always`	old send
102	nosys	`always`	old recv
103	nosys	`always`	old sigreturn
104	bind · mechanism	`(SOCKETS)`
105	setsockopt · mechanism	`(SOCKETS)`
106	listen · mechanism	`(SOCKETS)`
104	nosys	`(!(SOCKETS))`	Unavailable/reserved implementation (`nosys`).
105	nosys	`(!(SOCKETS))`	Unavailable/reserved implementation (`nosys`).
106	nosys	`(!(SOCKETS))`	Unavailable/reserved implementation (`nosys`).
107	nosys	`always`	old vtimes
108	nosys	`always`	old sigvec
109	nosys	`always`	old sigblock
110	nosys	`always`	old sigsetmask
111	sigsuspend · mechanism	`always`
112	nosys	`always`	old sigstack
113	nosys	`(SOCKETS)`	old recvmsg
114	nosys	`(SOCKETS)`	old sendmsg
113	nosys	`(!(SOCKETS))`	Unavailable/reserved implementation (`nosys`).
114	nosys	`(!(SOCKETS))`	Unavailable/reserved implementation (`nosys`).
115	nosys	`always`	old vtrace
116	gettimeofday · mechanism	`always`
117	getrusage · mechanism	`always`
118	getsockopt · mechanism	`(SOCKETS)`
118	nosys	`(!(SOCKETS))`	Unavailable/reserved implementation (`nosys`).
119	nosys	`always`	old resuba
120	readv · mechanism	`always`
121	writev · mechanism	`always`
122	settimeofday · mechanism	`always`
123	fchown · mechanism	`always`
124	fchmod · mechanism	`always`
125	nosys	`always`	old recvfrom
126	setreuid · mechanism	`always`
127	setregid · mechanism	`always`
128	rename · mechanism	`always`
129	nosys	`always`	old truncate
130	nosys	`always`	old ftruncate
131	sys_flock · mechanism	`always`
132	mkfifo · mechanism	`always`
133	sendto · mechanism	`(SOCKETS)`
134	shutdown · mechanism	`(SOCKETS)`
135	socketpair · mechanism	`(SOCKETS)`
133	nosys	`(!(SOCKETS))`	Unavailable/reserved implementation (`nosys`).
134	nosys	`(!(SOCKETS))`	Unavailable/reserved implementation (`nosys`).
135	nosys	`(!(SOCKETS))`	Unavailable/reserved implementation (`nosys`).
136	mkdir · mechanism	`always`
137	rmdir · mechanism	`always`
138	utimes · mechanism	`always`
139	futimes · mechanism	`always`
140	adjtime · mechanism	`always`
141	nosys	`always`	old getpeername
142	gethostuuid · mechanism	`always`
143	nosys	`always`	old sethostid
144	nosys	`always`	old getrlimit
145	nosys	`always`	old setrlimit
146	nosys	`always`	old killpg
147	setsid · mechanism	`always`
148	nosys	`always`	old setquota
149	nosys	`always`	old qquota
150	nosys	`always`	old getsockname
151	getpgid · mechanism	`always`
152	setprivexec · mechanism	`always`
153	pread · mechanism	`always`
154	pwrite · mechanism	`always`
155	nfssvc · mechanism	`(NFSSERVER)`
155	nosys	`(!(NFSSERVER))`	Unavailable/reserved implementation (`nosys`).
156	nosys	`always`	old getdirentries
157	statfs · mechanism	`always`
158	fstatfs · mechanism	`always`
159	unmount · mechanism	`always`
160	nosys	`always`	old async_daemon
161	getfh · mechanism	`(NFSSERVER)`
161	nosys	`(!(NFSSERVER))`	Unavailable/reserved implementation (`nosys`).
162	nosys	`always`	old getdomainname
163	nosys	`always`	old setdomainname
164	funmount · mechanism	`always`
165	quotactl · mechanism	`always`
166	nosys	`always`	old exportfs
167	mount · mechanism	`always`
168	nosys	`always`	old ustat
169	csops · mechanism	`always`
170	csops_audittoken · mechanism	`always`
171	nosys	`always`	old wait3
172	nosys	`always`	old rpause
173	waitid · mechanism	`always`
174	nosys	`always`	old getdents
175	nosys	`always`	old gc_control
176	nosys	`always`	old add_profil
177	kdebug_typefilter · mechanism	`always`
178	kdebug_trace_string · mechanism	`always`
179	kdebug_trace64 · mechanism	`always`
180	kdebug_trace · mechanism	`always`
181	setgid · mechanism	`always`
182	setegid · mechanism	`always`
183	seteuid · mechanism	`always`
184	sigreturn · mechanism	`always`
185	sys_panic_with_data · mechanism	`always`
186	thread_selfcounts · mechanism	`always`
187	fdatasync · mechanism	`always`
188	stat · mechanism	`always`
189	sys_fstat · mechanism	`always`
190	lstat · mechanism	`always`
191	pathconf · mechanism	`always`
192	sys_fpathconf · mechanism	`always`
193	nosys	`always`	old getfsstat
194	getrlimit · mechanism	`always`
195	setrlimit · mechanism	`always`
196	getdirentries · mechanism	`always`
197	mmap · mechanism	`always`
198	nosys	`always`	old __syscall
199	lseek · mechanism	`always`
200	truncate · mechanism	`always`
201	ftruncate · mechanism	`always`
202	sysctl · mechanism	`always`
203	mlock · mechanism	`always`
204	munlock · mechanism	`always`
205	undelete · mechanism	`always`
206	nosys	`always`	old ATsocket
207	nosys	`always`	old ATgetmsg
208	nosys	`always`	old ATputmsg
209	nosys	`always`	old ATsndreq
210	nosys	`always`	old ATsndrsp
211	nosys	`always`	old ATgetreq
212	nosys	`always`	old ATgetrsp
213	nosys	`always`	Reserved for AppleTalk
214	nosys	`always`	Unavailable/reserved implementation (`nosys`).
215	nosys	`always`	Unavailable/reserved implementation (`nosys`).
216	open_dprotected_np · mechanism	`always`
217	fsgetpath_ext · mechanism	`always`
218	openat_dprotected_np · mechanism	`always`
219	nosys	`always`	old fstatv
220	getattrlist · mechanism	`always`
221	setattrlist · mechanism	`always`
222	getdirentriesattr · mechanism	`always`
223	exchangedata · mechanism	`always`
224	nosys	`always`	old checkuseraccess or fsgetpath
225	searchfs · mechanism	`always`
226	delete · mechanism	`always`	private delete (Carbon semantics)
227	copyfile · mechanism	`always`
228	fgetattrlist · mechanism	`always`
229	fsetattrlist · mechanism	`always`
230	poll · mechanism	`always`
231	nosys	`always`	old watchevent
232	nosys	`always`	old waitevent
233	nosys	`always`	old modwatch
234	getxattr · mechanism	`always`
235	fgetxattr · mechanism	`always`
236	setxattr · mechanism	`always`
237	fsetxattr · mechanism	`always`
238	removexattr · mechanism	`always`
239	fremovexattr · mechanism	`always`
240	listxattr · mechanism	`always`
241	flistxattr · mechanism	`always`
242	fsctl · mechanism	`always`
243	initgroups · mechanism	`always`
244	posix_spawn · mechanism	`always`
245	ffsctl · mechanism	`always`
246	nosys	`always`	Unavailable/reserved implementation (`nosys`).
247	nosys	`always`	old nfsclnt
248	fhopen · mechanism	`(NFSSERVER)`
248	nosys	`(!(NFSSERVER))`	Unavailable/reserved implementation (`nosys`).
249	nosys	`always`	Unavailable/reserved implementation (`nosys`).
250	minherit · mechanism	`always`
251	semsys · mechanism	`(SYSV_SEM)`
251	nosys	`(!(SYSV_SEM))`	Unavailable/reserved implementation (`nosys`).
252	msgsys · mechanism	`(SYSV_MSG)`
252	nosys	`(!(SYSV_MSG))`	Unavailable/reserved implementation (`nosys`).
253	shmsys · mechanism	`(SYSV_SHM)`
253	nosys	`(!(SYSV_SHM))`	Unavailable/reserved implementation (`nosys`).
254	semctl · mechanism	`(SYSV_SEM)`
255	semget · mechanism	`(SYSV_SEM)`
256	semop · mechanism	`(SYSV_SEM)`
257	nosys	`(SYSV_SEM)`	old semconfig
254	nosys	`(!(SYSV_SEM))`	Unavailable/reserved implementation (`nosys`).
255	nosys	`(!(SYSV_SEM))`	Unavailable/reserved implementation (`nosys`).
256	nosys	`(!(SYSV_SEM))`	Unavailable/reserved implementation (`nosys`).
257	nosys	`(!(SYSV_SEM))`	Unavailable/reserved implementation (`nosys`).
258	msgctl · mechanism	`(SYSV_MSG)`
259	msgget · mechanism	`(SYSV_MSG)`
260	msgsnd · mechanism	`(SYSV_MSG)`
261	msgrcv · mechanism	`(SYSV_MSG)`
258	nosys	`(!(SYSV_MSG))`	Unavailable/reserved implementation (`nosys`).
259	nosys	`(!(SYSV_MSG))`	Unavailable/reserved implementation (`nosys`).
260	nosys	`(!(SYSV_MSG))`	Unavailable/reserved implementation (`nosys`).
261	nosys	`(!(SYSV_MSG))`	Unavailable/reserved implementation (`nosys`).
262	shmat · mechanism	`(SYSV_SHM)`
263	shmctl · mechanism	`(SYSV_SHM)`
264	shmdt · mechanism	`(SYSV_SHM)`
265	shmget · mechanism	`(SYSV_SHM)`
262	nosys	`(!(SYSV_SHM))`	Unavailable/reserved implementation (`nosys`).
263	nosys	`(!(SYSV_SHM))`	Unavailable/reserved implementation (`nosys`).
264	nosys	`(!(SYSV_SHM))`	Unavailable/reserved implementation (`nosys`).
265	nosys	`(!(SYSV_SHM))`	Unavailable/reserved implementation (`nosys`).
266	shm_open · mechanism	`always`
267	shm_unlink · mechanism	`always`
268	sem_open · mechanism	`always`
269	sem_close · mechanism	`always`
270	sem_unlink · mechanism	`always`
271	sem_wait · mechanism	`always`
272	sem_trywait · mechanism	`always`
273	sem_post · mechanism	`always`
274	sys_sysctlbyname · mechanism	`always`
275	enosys	`always`	old sem_init
276	enosys	`always`	old sem_destroy
277	open_extended · mechanism	`always`
278	umask_extended · mechanism	`always`
279	stat_extended · mechanism	`always`
280	lstat_extended · mechanism	`always`
281	sys_fstat_extended · mechanism	`always`
282	chmod_extended · mechanism	`always`
283	fchmod_extended · mechanism	`always`
284	access_extended · mechanism	`always`
285	sys_settid · mechanism	`always`
286	gettid · mechanism	`always`
287	setsgroups · mechanism	`always`
288	getsgroups · mechanism	`always`
289	setwgroups · mechanism	`always`
290	getwgroups · mechanism	`always`
291	mkfifo_extended · mechanism	`always`
292	mkdir_extended · mechanism	`always`
293	identitysvc · mechanism	`(CONFIG_EXT_RESOLVER)`
293	nosys	`(!(CONFIG_EXT_RESOLVER))`	Unavailable/reserved implementation (`nosys`).
294	shared_region_check_np · mechanism	`always`
295	nosys	`always`	old shared_region_map_np
296	vm_pressure_monitor · mechanism	`always`
297	psynch_rw_longrdlock · mechanism	`(PSYNCH)`
298	psynch_rw_yieldwrlock · mechanism	`(PSYNCH)`
299	psynch_rw_downgrade · mechanism	`(PSYNCH)`
300	psynch_rw_upgrade · mechanism	`(PSYNCH)`
301	psynch_mutexwait · mechanism	`(PSYNCH)`
302	psynch_mutexdrop · mechanism	`(PSYNCH)`
303	psynch_cvbroad · mechanism	`(PSYNCH)`
304	psynch_cvsignal · mechanism	`(PSYNCH)`
305	psynch_cvwait · mechanism	`(PSYNCH)`
306	psynch_rw_rdlock · mechanism	`(PSYNCH)`
307	psynch_rw_wrlock · mechanism	`(PSYNCH)`
308	psynch_rw_unlock · mechanism	`(PSYNCH)`
309	psynch_rw_unlock2 · mechanism	`(PSYNCH)`
297	nosys	`(!(PSYNCH))`	old reset_shared_file
298	nosys	`(!(PSYNCH))`	old new_system_shared_regions
299	enosys	`(!(PSYNCH))`	old shared_region_map_file_np
300	enosys	`(!(PSYNCH))`	old shared_region_make_private_np
301	nosys	`(!(PSYNCH))`	Unavailable/reserved implementation (`nosys`).
302	nosys	`(!(PSYNCH))`	Unavailable/reserved implementation (`nosys`).
303	nosys	`(!(PSYNCH))`	Unavailable/reserved implementation (`nosys`).
304	nosys	`(!(PSYNCH))`	Unavailable/reserved implementation (`nosys`).
305	nosys	`(!(PSYNCH))`	Unavailable/reserved implementation (`nosys`).
306	nosys	`(!(PSYNCH))`	Unavailable/reserved implementation (`nosys`).
307	nosys	`(!(PSYNCH))`	Unavailable/reserved implementation (`nosys`).
308	nosys	`(!(PSYNCH))`	Unavailable/reserved implementation (`nosys`).
309	nosys	`(!(PSYNCH))`	Unavailable/reserved implementation (`nosys`).
310	getsid · mechanism	`always`
311	sys_settid_with_pid · mechanism	`always`
312	psynch_cvclrprepost · mechanism	`(PSYNCH)`
312	nosys	`(!(PSYNCH))`	old __pthread_cond_timedwait
313	aio_fsync · mechanism	`always`
314	aio_return · mechanism	`always`
315	aio_suspend · mechanism	`always`
316	aio_cancel · mechanism	`always`
317	aio_error · mechanism	`always`
318	aio_read · mechanism	`always`
319	aio_write · mechanism	`always`
320	lio_listio · mechanism	`always`
321	nosys	`always`	old __pthread_cond_wait
322	iopolicysys · mechanism	`always`
323	process_policy · mechanism	`always`
324	mlockall · mechanism	`always`
325	munlockall · mechanism	`always`
326	nosys	`always`	Unavailable/reserved implementation (`nosys`).
327	issetugid · mechanism	`always`
328	__pthread_kill · mechanism	`always`
329	__pthread_sigmask · mechanism	`always`
330	__sigwait · mechanism	`always`
331	__disable_threadsignal · mechanism	`always`
332	__pthread_markcancel · mechanism	`always`
333	__pthread_canceled · mechanism	`always`
334	__semwait_signal · mechanism	`always`
335	nosys	`always`	old utrace
336	proc_info · mechanism	`always`
337	sendfile · mechanism	`(SENDFILE)`
337	nosys	`(!(SENDFILE))`	Unavailable/reserved implementation (`nosys`).
338	stat64 · mechanism	`always`
339	sys_fstat64 · mechanism	`always`
340	lstat64 · mechanism	`always`
341	stat64_extended · mechanism	`always`
342	lstat64_extended · mechanism	`always`
343	sys_fstat64_extended · mechanism	`always`
344	getdirentries64 · mechanism	`always`
345	statfs64 · mechanism	`always`
346	fstatfs64 · mechanism	`always`
347	getfsstat64 · mechanism	`always`
348	__pthread_chdir · mechanism	`always`
349	__pthread_fchdir · mechanism	`always`
350	audit · mechanism	`always`
351	auditon · mechanism	`always`
352	nosys	`always`	Unavailable/reserved implementation (`nosys`).
353	getauid · mechanism	`always`
354	setauid · mechanism	`always`
355	nosys	`always`	old getaudit
356	nosys	`always`	old setaudit
357	getaudit_addr · mechanism	`always`
358	setaudit_addr · mechanism	`always`
359	auditctl · mechanism	`always`
360	bsdthread_create · mechanism	`always`
361	bsdthread_terminate · mechanism	`always`
362	kqueue · mechanism	`always`
363	kevent · mechanism	`always`
364	lchown · mechanism	`always`
365	nosys	`always`	old stack_snapshot
366	bsdthread_register · mechanism	`always`
367	workq_open · mechanism	`always`
368	workq_kernreturn · mechanism	`always`
369	kevent64 · mechanism	`always`
370	nosys	`always`	old __semwait_signal
371	nosys	`always`	old __semwait_signal
372	thread_selfid · mechanism	`always`
373	ledger · mechanism	`always`
374	kevent_qos · mechanism	`always`
375	kevent_id · mechanism	`always`
376	nosys	`always`	Unavailable/reserved implementation (`nosys`).
377	nosys	`always`	Unavailable/reserved implementation (`nosys`).
378	nosys	`always`	Unavailable/reserved implementation (`nosys`).
379	nosys	`always`	Unavailable/reserved implementation (`nosys`).
380	__mac_execve · mechanism	`always`
381	__mac_syscall · mechanism	`(CONFIG_MACF)`
382	__mac_get_file · mechanism	`(CONFIG_MACF)`
383	__mac_set_file · mechanism	`(CONFIG_MACF)`
384	__mac_get_link · mechanism	`(CONFIG_MACF)`
385	__mac_set_link · mechanism	`(CONFIG_MACF)`
386	__mac_get_proc · mechanism	`(CONFIG_MACF)`
387	__mac_set_proc · mechanism	`(CONFIG_MACF)`
388	__mac_get_fd · mechanism	`(CONFIG_MACF)`
389	__mac_set_fd · mechanism	`(CONFIG_MACF)`
390	__mac_get_pid · mechanism	`(CONFIG_MACF)`
381	enosys	`(!(CONFIG_MACF))`	Unavailable/reserved implementation (`enosys`).
382	nosys	`(!(CONFIG_MACF))`	Unavailable/reserved implementation (`nosys`).
383	nosys	`(!(CONFIG_MACF))`	Unavailable/reserved implementation (`nosys`).
384	nosys	`(!(CONFIG_MACF))`	Unavailable/reserved implementation (`nosys`).
385	nosys	`(!(CONFIG_MACF))`	Unavailable/reserved implementation (`nosys`).
386	nosys	`(!(CONFIG_MACF))`	Unavailable/reserved implementation (`nosys`).
387	nosys	`(!(CONFIG_MACF))`	Unavailable/reserved implementation (`nosys`).
388	nosys	`(!(CONFIG_MACF))`	Unavailable/reserved implementation (`nosys`).
389	nosys	`(!(CONFIG_MACF))`	Unavailable/reserved implementation (`nosys`).
390	nosys	`(!(CONFIG_MACF))`	Unavailable/reserved implementation (`nosys`).
391	enosys	`always`	Unavailable/reserved implementation (`enosys`).
392	enosys	`always`	Unavailable/reserved implementation (`enosys`).
393	enosys	`always`	Unavailable/reserved implementation (`enosys`).
394	pselect · mechanism	`always`
395	pselect_nocancel · mechanism	`always`
396	read_nocancel · mechanism	`always`
397	write_nocancel · mechanism	`always`
398	open_nocancel · mechanism	`always`
399	sys_close_nocancel · mechanism	`always`
400	wait4_nocancel · mechanism	`always`
401	recvmsg_nocancel · mechanism	`(SOCKETS)`
402	sendmsg_nocancel · mechanism	`(SOCKETS)`
403	recvfrom_nocancel · mechanism	`(SOCKETS)`
404	accept_nocancel · mechanism	`(SOCKETS)`
401	nosys	`(!(SOCKETS))`	Unavailable/reserved implementation (`nosys`).
402	nosys	`(!(SOCKETS))`	Unavailable/reserved implementation (`nosys`).
403	nosys	`(!(SOCKETS))`	Unavailable/reserved implementation (`nosys`).
404	nosys	`(!(SOCKETS))`	Unavailable/reserved implementation (`nosys`).
405	msync_nocancel · mechanism	`always`
406	sys_fcntl_nocancel · mechanism	`always`
407	select_nocancel · mechanism	`always`
408	fsync_nocancel · mechanism	`always`
409	connect_nocancel · mechanism	`(SOCKETS)`
409	nosys	`(!(SOCKETS))`	Unavailable/reserved implementation (`nosys`).
410	sigsuspend_nocancel · mechanism	`always`
411	readv_nocancel · mechanism	`always`
412	writev_nocancel · mechanism	`always`
413	sendto_nocancel · mechanism	`(SOCKETS)`
413	nosys	`(!(SOCKETS))`	Unavailable/reserved implementation (`nosys`).
414	pread_nocancel · mechanism	`always`
415	pwrite_nocancel · mechanism	`always`
416	waitid_nocancel · mechanism	`always`
417	poll_nocancel · mechanism	`always`
418	msgsnd_nocancel · mechanism	`(SYSV_MSG)`
419	msgrcv_nocancel · mechanism	`(SYSV_MSG)`
418	nosys	`(!(SYSV_MSG))`	Unavailable/reserved implementation (`nosys`).
419	nosys	`(!(SYSV_MSG))`	Unavailable/reserved implementation (`nosys`).
420	sem_wait_nocancel · mechanism	`always`
421	aio_suspend_nocancel · mechanism	`always`
422	__sigwait_nocancel · mechanism	`always`
423	__semwait_signal_nocancel · mechanism	`always`
424	__mac_mount · mechanism	`always`
425	__mac_get_mount · mechanism	`(CONFIG_MACF)`
425	nosys	`(!(CONFIG_MACF))`	Unavailable/reserved implementation (`nosys`).
426	__mac_getfsstat · mechanism	`always`
427	fsgetpath · mechanism	`always`	private fsgetpath (File Manager SPI)
428	audit_session_self · mechanism	`always`
429	audit_session_join · mechanism	`always`
430	sys_fileport_makeport · mechanism	`always`
431	sys_fileport_makefd · mechanism	`always`
432	audit_session_port · mechanism	`always`
433	pid_suspend · mechanism	`always`
434	pid_resume · mechanism	`always`
435	pid_hibernate · mechanism	`(CONFIG_EMBEDDED)`
435	nosys	`(!(CONFIG_EMBEDDED))`	Unavailable/reserved implementation (`nosys`).
436	pid_shutdown_sockets · mechanism	`(SOCKETS)`
436	nosys	`(!(SOCKETS))`	Unavailable/reserved implementation (`nosys`).
437	nosys	`always`	old shared_region_slide_np
438	nosys	`always`	old shared_region_map_and_slide_np
439	kas_info · mechanism	`always`
440	memorystatus_control · mechanism	`(CONFIG_MEMORYSTATUS)`
440	nosys	`(!(CONFIG_MEMORYSTATUS))`	Unavailable/reserved implementation (`nosys`).
441	guarded_open_np · mechanism	`always`
442	guarded_close_np · mechanism	`always`
443	guarded_kqueue_np · mechanism	`always`
444	change_fdguard_np · mechanism	`always`
445	usrctl · mechanism	`always`
446	proc_rlimit_control · mechanism	`always`
447	connectx · mechanism	`(SOCKETS)`
448	disconnectx · mechanism	`(SOCKETS)`
449	peeloff · mechanism	`(SOCKETS)`
450	socket_delegate · mechanism	`(SOCKETS)`
447	nosys	`(!(SOCKETS))`	Unavailable/reserved implementation (`nosys`).
448	nosys	`(!(SOCKETS))`	Unavailable/reserved implementation (`nosys`).
449	nosys	`(!(SOCKETS))`	Unavailable/reserved implementation (`nosys`).
450	nosys	`(!(SOCKETS))`	Unavailable/reserved implementation (`nosys`).
451	telemetry · mechanism	`always`
452	proc_uuid_policy · mechanism	`(CONFIG_PROC_UUID_POLICY)`
452	nosys	`(!(CONFIG_PROC_UUID_POLICY))`	Unavailable/reserved implementation (`nosys`).
453	memorystatus_get_level · mechanism	`(CONFIG_MEMORYSTATUS)`
453	nosys	`(!(CONFIG_MEMORYSTATUS))`	Unavailable/reserved implementation (`nosys`).
454	system_override · mechanism	`always`
455	vfs_purge · mechanism	`always`
456	sfi_ctl · mechanism	`always`
457	sfi_pidctl · mechanism	`always`
458	coalition · mechanism	`(CONFIG_COALITIONS)`
459	coalition_info · mechanism	`(CONFIG_COALITIONS)`
458	enosys	`(!(CONFIG_COALITIONS))`	Unavailable/reserved implementation (`enosys`).
459	enosys	`(!(CONFIG_COALITIONS))`	Unavailable/reserved implementation (`enosys`).
460	necp_match_policy · mechanism	`(NECP)`
460	nosys	`(!(NECP))`	Unavailable/reserved implementation (`nosys`).
461	getattrlistbulk · mechanism	`always`
462	clonefileat · mechanism	`always`
463	openat · mechanism	`always`
464	openat_nocancel · mechanism	`always`
465	renameat · mechanism	`always`
466	faccessat · mechanism	`always`
467	fchmodat · mechanism	`always`
468	fchownat · mechanism	`always`
469	fstatat · mechanism	`always`
470	fstatat64 · mechanism	`always`
471	linkat · mechanism	`always`
472	unlinkat · mechanism	`always`
473	readlinkat · mechanism	`always`
474	symlinkat · mechanism	`always`
475	mkdirat · mechanism	`always`
476	getattrlistat · mechanism	`always`
477	proc_trace_log · mechanism	`always`
478	bsdthread_ctl · mechanism	`always`
479	openbyid_np · mechanism	`always`
480	recvmsg_x · mechanism	`(SOCKETS)`
481	sendmsg_x · mechanism	`(SOCKETS)`
480	nosys	`(!(SOCKETS))`	Unavailable/reserved implementation (`nosys`).
481	nosys	`(!(SOCKETS))`	Unavailable/reserved implementation (`nosys`).
482	thread_selfusage · mechanism	`always`
483	csrctl · mechanism	`(CONFIG_CSR)`
483	enosys	`(!(CONFIG_CSR))`	Unavailable/reserved implementation (`enosys`).
484	guarded_open_dprotected_np · mechanism	`always`
485	guarded_write_np · mechanism	`always`
486	guarded_pwrite_np · mechanism	`always`
487	guarded_writev_np · mechanism	`always`
488	renameatx_np · mechanism	`always`
489	mremap_encrypted · mechanism	`(CONFIG_CODE_DECRYPTION)`
489	enosys	`(!(CONFIG_CODE_DECRYPTION))`	Unavailable/reserved implementation (`enosys`).
490	netagent_trigger · mechanism	`(NETWORKING)`
490	nosys	`(!(NETWORKING))`	Unavailable/reserved implementation (`nosys`).
491	stack_snapshot_with_config · mechanism	`always`
492	microstackshot · mechanism	`(CONFIG_TELEMETRY)`
492	enosys	`(!(CONFIG_TELEMETRY))`	Unavailable/reserved implementation (`enosys`).
493	grab_pgo_data · mechanism	`(PGO)`
493	enosys	`(!(PGO))`	Unavailable/reserved implementation (`enosys`).
494	persona · mechanism	`(CONFIG_PERSONAS)`
494	enosys	`(!(CONFIG_PERSONAS))`	Unavailable/reserved implementation (`enosys`).
495	enosys	`always`	Unavailable/reserved implementation (`enosys`).
496	mach_eventlink_signal · mechanism	`always`
497	mach_eventlink_wait_until · mechanism	`always`
498	mach_eventlink_signal_wait_until · mechanism	`always`
499	work_interval_ctl · mechanism	`always`
500	getentropy · mechanism	`always`
501	necp_open · mechanism	`(NECP)`
502	necp_client_action · mechanism	`(NECP)`
501	enosys	`(!(NECP))`	Unavailable/reserved implementation (`enosys`).
502	enosys	`(!(NECP))`	Unavailable/reserved implementation (`enosys`).
503	__nexus_open · mechanism	`(SKYWALK)`
504	__nexus_register · mechanism	`(SKYWALK)`
505	__nexus_deregister · mechanism	`(SKYWALK)`
506	__nexus_create · mechanism	`(SKYWALK)`
507	__nexus_destroy · mechanism	`(SKYWALK)`
508	__nexus_get_opt · mechanism	`(SKYWALK)`
509	__nexus_set_opt · mechanism	`(SKYWALK)`
510	__channel_open · mechanism	`(SKYWALK)`
511	__channel_get_info · mechanism	`(SKYWALK)`
512	__channel_sync · mechanism	`(SKYWALK)`
513	__channel_get_opt · mechanism	`(SKYWALK)`
514	__channel_set_opt · mechanism	`(SKYWALK)`
503	enosys	`(!(SKYWALK))`	Unavailable/reserved implementation (`enosys`).
504	enosys	`(!(SKYWALK))`	Unavailable/reserved implementation (`enosys`).
505	enosys	`(!(SKYWALK))`	Unavailable/reserved implementation (`enosys`).
506	enosys	`(!(SKYWALK))`	Unavailable/reserved implementation (`enosys`).
507	enosys	`(!(SKYWALK))`	Unavailable/reserved implementation (`enosys`).
508	enosys	`(!(SKYWALK))`	Unavailable/reserved implementation (`enosys`).
509	enosys	`(!(SKYWALK))`	Unavailable/reserved implementation (`enosys`).
510	enosys	`(!(SKYWALK))`	Unavailable/reserved implementation (`enosys`).
511	enosys	`(!(SKYWALK))`	Unavailable/reserved implementation (`enosys`).
512	enosys	`(!(SKYWALK))`	Unavailable/reserved implementation (`enosys`).
513	enosys	`(!(SKYWALK))`	Unavailable/reserved implementation (`enosys`).
514	enosys	`(!(SKYWALK))`	Unavailable/reserved implementation (`enosys`).
515	sys_ulock_wait · mechanism	`always`
516	sys_ulock_wake · mechanism	`always`
517	fclonefileat · mechanism	`always`
518	fs_snapshot · mechanism	`always`
519	enosys	`always`	Unavailable/reserved implementation (`enosys`).
520	terminate_with_payload · mechanism	`always`
521	abort_with_payload · mechanism	`always`
522	necp_session_open · mechanism	`(NECP)`
523	necp_session_action · mechanism	`(NECP)`
522	enosys	`(!(NECP))`	Unavailable/reserved implementation (`enosys`).
523	enosys	`(!(NECP))`	Unavailable/reserved implementation (`enosys`).
524	setattrlistat · mechanism	`always`
525	net_qos_guideline · mechanism	`always`
526	fmount · mechanism	`always`
527	ntp_adjtime · mechanism	`always`
528	ntp_gettime · mechanism	`always`
529	os_fault_with_payload · mechanism	`always`
530	kqueue_workloop_ctl · mechanism	`always`
531	__mach_bridge_remote_time · mechanism	`always`
532	coalition_ledger · mechanism	`(CONFIG_COALITIONS)`
532	enosys	`(!(CONFIG_COALITIONS))`	Unavailable/reserved implementation (`enosys`).
533	log_data · mechanism	`always`
534	memorystatus_available_memory · mechanism	`always`
535	objc_bp_assist_cfg_np · mechanism	`always`
536	shared_region_map_and_slide_2_np · mechanism	`always`
537	pivot_root · mechanism	`always`
538	task_inspect_for_pid · mechanism	`always`
539	task_read_for_pid · mechanism	`always`
540	sys_preadv · mechanism	`always`
541	sys_pwritev · mechanism	`always`
542	sys_preadv_nocancel · mechanism	`always`
543	sys_pwritev_nocancel · mechanism	`always`
544	sys_ulock_wait2 · mechanism	`always`
545	proc_info_extended_id · mechanism	`always`
546	tracker_action · mechanism	`(SOCKETS)`
546	nosys	`(!(SOCKETS))`	Unavailable/reserved implementation (`nosys`).
547	debug_syscall_reject · mechanism	`always`
548	sys_debug_syscall_reject_config · mechanism	`always`
549	graftdmg · mechanism	`always`
550	map_with_linking_np · mechanism	`always`
551	freadlink · mechanism	`always`
552	sys_record_system_event · mechanism	`always`
553	mkfifoat · mechanism	`always`
554	mknodat · mechanism	`always`
555	ungraftdmg · mechanism	`always`
556	sys_coalition_policy_set · mechanism	`(CONFIG_COALITIONS)`
557	sys_coalition_policy_get · mechanism	`(CONFIG_COALITIONS)`
556	enosys	`(!(CONFIG_COALITIONS))`	Unavailable/reserved implementation (`enosys`).
557	enosys	`(!(CONFIG_COALITIONS))`	Unavailable/reserved implementation (`enosys`).

Reconciliation

Distinct syscall numbers: 558, from 0 through 557.
Declaration alternatives: 669.
Non-stub declarations with authored purpose and implementation mechanism: 455.
nosys/enosys alternatives: 214.
These are source declarations across configurations, not the enabled calls in one running kernel.

BSD syscall number and configuration index

Reconciliation

Search the handbook

Diagram

Source preview