remove references to fs.posix.setuid; ok tedu

bin/chmod/chgrp.1

@@ -1,4 +1,4 @@
-.\"	$OpenBSD: chgrp.1,v 1.19 2024/08/01 14:08:38 jmc Exp $
+.\"	$OpenBSD: chgrp.1,v 1.20 2025/04/29 17:44:00 jmc Exp $
 .\"
 .\" Copyright (c) 1983, 1990, 1993, 1994
 .\"	The Regents of the University of California.  All rights reserved.
@@ -32,7 +32,7 @@
 .\"
 .\"     from: @(#)chgrp.1	8.3 (Berkeley) 3/31/94
 .\"
-.Dd $Mdocdate: August 1 2024 $
+.Dd $Mdocdate: April 29 2025 $
 .Dt CHGRP 1
 .Os
 .Sh NAME
@@ -108,11 +108,6 @@ By default,
 clears the set-user-ID and set-group-ID bits on the file
 to prevent accidental or mischievous creation of
 set-user-ID and set-group-ID programs.
-This behaviour can be overridden by setting the
-.Xr sysctl 8
-variable
-.Va fs.posix.setuid
-to zero.
 .Pp
 The user invoking
 .Nm

bin/chmod/chown.8

@@ -1,4 +1,4 @@
-.\"	$OpenBSD: chown.8,v 1.24 2024/08/01 14:44:34 jmc Exp $
+.\"	$OpenBSD: chown.8,v 1.25 2025/04/29 17:44:00 jmc Exp $
 .\"
 .\" Copyright (c) 1990, 1991, 1993, 1994
 .\"	The Regents of the University of California.  All rights reserved.
@@ -29,7 +29,7 @@
 .\"
 .\"     from: @(#)chown.8	8.3 (Berkeley) 3/31/94
 .\"
-.Dd $Mdocdate: August 1 2024 $
+.Dd $Mdocdate: April 29 2025 $
 .Dt CHOWN 8
 .Os
 .Sh NAME
@@ -128,11 +128,6 @@ By default,
 clears the set-user-ID and set-group-ID bits on the file
 to prevent accidental or mischievous creation of
 set-user-ID and set-group-ID programs.
-This behaviour can be overridden by setting the
-.Xr sysctl 8
-variable
-.Va fs.posix.setuid
-to zero.
 .Pp
 Only the superuser is permitted to change the owner of a file.
 .Sh EXIT STATUS

lib/libc/sys/chown.2

@@ -1,4 +1,4 @@
-.\"	$OpenBSD: chown.2,v 1.27 2022/02/18 23:17:14 jsg Exp $
+.\"	$OpenBSD: chown.2,v 1.28 2025/04/29 17:44:00 jmc Exp $
 .\"	$NetBSD: chown.2,v 1.10 1995/10/12 15:40:47 jtc Exp $
 .\"
 .\" Copyright (c) 1980, 1991, 1993, 1994
@@ -30,7 +30,7 @@
 .\"
 .\"     @(#)chown.2	8.4 (Berkeley) 4/19/94
 .\"
-.Dd $Mdocdate: February 18 2022 $
+.Dd $Mdocdate: April 29 2025 $
 .Dt CHOWN 2
 .Os
 .Sh NAME
@@ -72,11 +72,6 @@ By default,
 clears the set-user-ID and set-group-ID bits on the file
 to prevent accidental or mischievous creation of
 set-user-ID and set-group-ID programs.
-This behaviour can be overridden by setting the
-.Xr sysctl 8
-variable
-.Va fs.posix.setuid
-to zero.
 .Pp
 .Fn lchown
 operates similarly to how

sbin/sysctl/sysctl.8

@@ -1,4 +1,4 @@
-.\"	$OpenBSD: sysctl.8,v 1.217 2025/04/05 14:09:06 kn Exp $
+.\"	$OpenBSD: sysctl.8,v 1.218 2025/04/29 17:44:00 jmc Exp $
 .\"	$NetBSD: sysctl.8,v 1.4 1995/09/30 07:12:49 thorpej Exp $
 .\"
 .\" Copyright (c) 1993
@@ -30,7 +30,7 @@
 .\"
 .\"	@(#)sysctl.8	8.2 (Berkeley) 5/9/95
 .\"
-.Dd $Mdocdate: April 5 2025 $
+.Dd $Mdocdate: April 29 2025 $
 .Dt SYSCTL 8
 .Os
 .Sh NAME
@@ -146,14 +146,6 @@ To retrieve information about the load average history:
 .Pp
 .Dl $ sysctl vm.loadavg
 .Pp
-To make the
-.Xr chown 2
-system call use traditional
-.Bx
-semantics (don't clear setuid/setgid bits):
-.Pp
-.Dl # sysctl fs.posix.setuid=0
-.Pp
 To set the list of reserved TCP ports that should not be allocated
 by the kernel dynamically:
 .Pp

share/man/man7/securelevel.7

@@ -1,4 +1,4 @@
-.\"     $OpenBSD: securelevel.7,v 1.31 2019/08/21 20:44:09 cheloha Exp $
+.\"     $OpenBSD: securelevel.7,v 1.32 2025/04/29 17:44:00 jmc Exp $
 .\"
 .\" Copyright (c) 2000 Hugh Graham
 .\"
@@ -23,7 +23,7 @@
 .\" IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 .\" POSSIBILITY OF SUCH DAMAGE.
 .\"
-.Dd $Mdocdate: August 21 2019 $
+.Dd $Mdocdate: April 29 2025 $
 .Dt SECURELEVEL 7
 .Os
 .Sh NAME
@@ -73,7 +73,6 @@ raw disk devices of mounted file systems are read-only
 system immutable and append-only file flags may not be removed
 .It
 the
-.Va fs.posix.setuid ,
 .Va hw.allowpowerdown ,
 .Va kern.allowkmem ,
 .Va kern.utc_offset ,