docs/181845: Virtualbox Host Setup needs acd0 in /etc/devfs.conf, also enable atapicam

[Patrick Powell]

>Number:         181845
>Category:       docs
>Synopsis:       Virtualbox Host Setup needs acd0 in /etc/devfs.conf, also enable atapicam
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-doc
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          doc-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Sep 05 17:30:00 UTC 2013
>Closed-Date:
>Last-Modified:
>Originator:     Patrick Powell
>Release:        8.4
>Organization:
Astart Technologies
>Environment:
FreeBSD laptop_84.private 8.4-RELEASE FreeBSD 8.4-RELEASE #0 r251259: Sun Jun  2 21:26:57 UTC 2013     root at bake.isc.freebsd.org:/usr/obj/usr/src/sys/GENERIC  amd64

>Description:
The Wiki:
https://wiki.freebsd.org/VirtualBox

And section 22.3.3 Virtualbox Host DVD/CD Access both indicate that /etc/devfs.conf needs:

perm cd* 0600
perm xpt0 0660 
perm pass* 0660

However, if the CD/DVD on the host is detected as acd0 then you need:

link acd0    cd0
perm acd* 0600
perm xpt0 0660 
perm pass* 0660

Also, as noted in another PR,  you need to enable ATAPICAM.  From the Wiki:

Host DVD/CD access

atapicam kernel module needs to be loaded via /boot/loader.conf:

atapicam_load="YES" 
>How-To-Repeat:

>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted: