diff options
| author |   visa <visa@openbsd.org> | 2018-05-16 15:24:10 +0000 |
|---|---|---|
| committer | visa <visa@openbsd.org> | 2018-05-16 15:24:10 +0000 |
| commit | 5a4659c2555297daa39987dbbf985b97732f8b38 (patch) | |
| tree | c8ed442ea583201a34f356bf4591f3518c465573 /lib/libc/sys | |
| parent | Document the kern.witnesswatch sysctl. (diff) | |
| download | wireguard-openbsd-5a4659c2555297daa39987dbbf985b97732f8b38.tar.xz wireguard-openbsd-5a4659c2555297daa39987dbbf985b97732f8b38.zip | |
Document kern.witnesswatch in sysctl(2).
Reminded by jmc@
Diffstat (limited to 'lib/libc/sys')
| -rw-r--r-- | lib/libc/sys/sysctl.2 | 31 |
1 files changed, 29 insertions, 2 deletions
diff --git a/lib/libc/sys/sysctl.2 b/lib/libc/sys/sysctl.2 index fb5d433fb87..c7d9f6f4a1f 100644 --- a/lib/libc/sys/sysctl.2 +++ b/lib/libc/sys/sysctl.2 @@ -1,4 +1,4 @@ -.\" $OpenBSD: sysctl.2,v 1.4 2018/03/05 13:35:09 otto Exp $ +.\" $OpenBSD: sysctl.2,v 1.5 2018/05/16 15:24:10 visa Exp $ .\" .\" Copyright (c) 1993 .\" The Regents of the University of California. All rights reserved. @@ -27,7 +27,7 @@ .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" -.Dd $Mdocdate: March 5 2018 $ +.Dd $Mdocdate: May 16 2018 $ .Dt SYSCTL 2 .Os .Sh NAME @@ -479,6 +479,7 @@ information. .It Dv KERN_TTYCOUNT Ta "integer" Ta "no" .It Dv KERN_VERSION Ta "string" Ta "no" .It Dv KERN_WATCHDOG Ta "node" Ta "not applicable" +.It Dv KERN_WITNESSWATCH Ta "integer" Ta "yes" .It Dv KERN_WXABORT Ta "integer" Ta "yes" .El .Bl -tag -width "123456" @@ -1046,6 +1047,32 @@ variable. The period of the watchdog timer in seconds. Set to 0 to disable the watchdog timer. .El +.It Dv KERN_WITNESSWATCH Pq Va kern.witnesswatch +Control how +.Xr witness 4 +behaves on error. +Valid values are: +.Pp +.Bl -tag -width 3n -offset indent -compact +.It -1 +Disable +.Xr witness 4 +completely. +System reboot is needed to re-enable it. +.It 0 +Disable lock order checking. +.It 1 +Print a message if an error is detected. +.It 2 +Print a message if an error is detected, +and a stack trace if possible. +.It 3 +The same as 2, but also drop into the kernel debugger. +.El +.Pp +See +.Xr witness 4 +for more information. .It Dv KERN_WXABORT Pq Va kern.wxabort Generate an abort, rather than returning an error, |