misc/188753: mount devfs ruleset ignored

[poboxer]

>Number:         188753
>Category:       misc
>Synopsis:       mount devfs ruleset ignored
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Fri Apr 18 10:20:00 UTC 2014
>Closed-Date:
>Last-Modified:
>Originator:     poboxer
>Release:        10
>Organization:
bug farm
>Environment:
FreeBSD censored.com 10.0-RELEASE-p1 FreeBSD 10.0-RELEASE-p1 #0: Tue Apr  8 06:45:06 UTC 2014     root at amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC  amd64
>Description:
Problem discovered while using jails on FreeBSD 10.

It appears that ruleset is ignored while mounting exposing most of host's /dev/.

[root at host]# tail -n4 /etc/defaults/devfs.rules 
# Devices usually found in a jail.
#
[devfsrules_jail=4]
add include $devfsrules_hide_all

[root at host]# mount -t devfs -o ruleset=4 devfs /mnt/test

[root at host]#  ls -l /mnt/test | wc -l
      95


>How-To-Repeat:
# mount devfs using ruleset 4 from /etc/defaults/devfs.rules

mount -t devfs -o ruleset=4 devfs /mnt/test

# check

ls -l /mnt/test
>Fix:


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