ok. maybe add a line to current.html so that people are not surprised that their video is no longer working after upgrade.
/Benno Marcus Glocker([email protected]) on 2020.12.28 23:47:54 +0100: > Since I'm receiving various private queries about documenting the new > kern.video.record sysctl(2) variable, I send the diff I've created > already for the man page updates here. > > OK? (I'm happy if others want to do improvements afterwards in-tree) > > > Index: share/man/man4/video.4 > =================================================================== > RCS file: /cvs/src/share/man/man4/video.4,v > retrieving revision 1.18 > diff -u -p -u -p -r1.18 video.4 > --- share/man/man4/video.4 31 Jul 2020 18:17:17 -0000 1.18 > +++ share/man/man4/video.4 28 Dec 2020 20:09:50 -0000 > @@ -40,6 +40,16 @@ Therefore this document mainly describes > which are supported by the > .Nm > driver. > +.Pp > +For security reasons video recording is disabled by default. > +To achieve this, the > +.Nm > +driver will blank the image data received from the underlying video hardware > +driver. > +The superuser can change this behavior by the > +.Va kern.video.record > +.Xr sysctl 2 > +variable. > .Sh IOCTLS > The following > .Xr ioctl 2 > Index: share/man/man8/afterboot.8 > =================================================================== > RCS file: /cvs/src/share/man/man8/afterboot.8,v > retrieving revision 1.167 > diff -u -p -u -p -r1.167 afterboot.8 > --- share/man/man8/afterboot.8 23 Oct 2020 20:37:45 -0000 1.167 > +++ share/man/man8/afterboot.8 28 Dec 2020 20:09:50 -0000 > @@ -414,6 +414,14 @@ Normal audio recording can be enabled by > .Xr sysctl.conf 5 : > .Pp > .Dl kern.audio.record=1 > +.Ss Video recording > +The > +.Xr video 4 > +driver by default records only blanked images. > +Normal video recording can be enabled by adding the following directive to > +.Xr sysctl.conf 5 : > +.Pp > +.Dl kern.video.record=1 > .Ss Mail aliases > Edit > .Pa /etc/mail/aliases > Index: lib/libc/sys/sysctl.2 > =================================================================== > RCS file: /cvs/src/lib/libc/sys/sysctl.2,v > retrieving revision 1.41 > diff -u -p -u -p -r1.41 sysctl.2 > --- lib/libc/sys/sysctl.2 4 Aug 2020 09:32:05 -0000 1.41 > +++ lib/libc/sys/sysctl.2 28 Dec 2020 20:09:50 -0000 > @@ -491,6 +491,7 @@ information. > .It Dv KERN_TTYCOUNT Ta "integer" Ta "no" > .It Dv KERN_UTC_OFFSET Ta "integer" Ta "yes" > .It Dv KERN_VERSION Ta "string" Ta "no" > +.It Dv KERN_VIDEO Ta "node" Ta "yes" > .It Dv KERN_WATCHDOG Ta "node" Ta "not applicable" > .It Dv KERN_WITNESS Ta "node" Ta "not applicable" > .It Dv KERN_WXABORT Ta "integer" Ta "yes" > @@ -1104,6 +1105,23 @@ greater than 0, > this variable may not be changed. > .It Dv KERN_VERSION Pq Va kern.version > The system version string. > +.It Dv KERN_VIDEO Pq Va kern.video > +Control device-independent aspects of the > +.Xr video 4 > +subsystem. > +Currently, there is one subnode: > +.Bl -column "KERN_VIDEO_RECORD" "integer" "Changeable" -offset indent > +.It Sy "Third level name" Ta Sy "Type" Ta Sy "Changeable" > +.It Dv KERN_VIDEO_RECORD Ta "integer" Ta "yes" > +.El > +.Pp > +Its meaning is as follows: > +.Bl -tag -width "123456" > +.It Dv KERN_VIDEO_RECORD Pq Va kern.video.record > +If set to the default value of 0, recording is disabled by default > +for all video devices. > +Otherwise, video recording is enabled by default. > +.El > .It Dv KERN_WATCHDOG Pq Va kern.watchdog > Return information on hardware watchdog timers. > If the kernel does not support a hardware watchdog timer, >
