[src/trunk]: src/share/man/man7 document kern.expose_address

[christos <christos%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/443831085218
branches:  trunk
changeset: 836243:443831085218
user:      christos <christos%NetBSD.org@localhost>
date:      Fri Oct 05 22:16:50 2018 +0000

description:
document kern.expose_address

diffstat:

 share/man/man7/sysctl.7 |  15 +++++++++++++--
 1 files changed, 13 insertions(+), 2 deletions(-)

diffs (43 lines):

diff -r 41b493dd7473 -r 443831085218 share/man/man7/sysctl.7
--- a/share/man/man7/sysctl.7   Fri Oct 05 22:12:37 2018 +0000
+++ b/share/man/man7/sysctl.7   Fri Oct 05 22:16:50 2018 +0000
@@ -1,4 +1,4 @@
-.\"    $NetBSD: sysctl.7,v 1.131 2018/09/06 10:09:29 maxv Exp $
+.\"    $NetBSD: sysctl.7,v 1.132 2018/10/05 22:16:50 christos Exp $
 .\"
 .\" Copyright (c) 1993
 .\"    The Regents of the University of California.  All rights reserved.
@@ -29,7 +29,7 @@
 .\"
 .\"    @(#)sysctl.3    8.4 (Berkeley) 5/9/95
 .\"
-.Dd September 6, 2018
+.Dd October 5, 2018
 .Dt SYSCTL 7
 .Os
 .Sh NAME
@@ -293,6 +293,7 @@
 .It kern.domainname    string  yes
 .It kern.drivers       struct kinfo_drivers    no
 .It kern.dump_on_panic integer yes
+.It kern.expose_address        integer yes
 .It kern.file  struct file     no
 .It kern.forkfsleep    integer yes
 .It kern.fscale        integer no
@@ -513,6 +514,16 @@
 The
 .Va d_bmajor
 field will be set to \-1 if the driver doesn't have a block device.
+.It Li kern.expose_address
+Expose kernel addresses in
+.Xr sysctl 3
+calls used by
+.Xr fstat 1
+and
+.Xr sockstat 1 .
+Defaults to
+.Dv 0 .
+Turning it on renders KASLR ineffective.
 .It Li kern.dump_on_panic ( Dv KERN_DUMP_ON_PANIC )
 Perform a crash dump on system
 .Xr panic 9 .