kern/186066: can not change file permisions,

>Number:         186066
>Category:       kern
>Synopsis:       can not change file permisions, owner for spacial files in ext2fs
>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 Jan 24 07:10:00 UTC 2014
>Closed-Date:
>Last-Modified:
>Originator:     Matthias Apitz
>Release:        r255948 10.0-ALPHA4
>Organization:
>Environment:
FreeBSD tiny-r255948 10.0-ALPHA4 FreeBSD 10.0-ALPHA4 #1: Fri Oct 18 12:10:57 CES
T 2013     guru@aurora.Sisis.de:/usr/obj/usr/src/sys/GENERIC  i386
>Description:

# uname -a
FreeBSD tiny-r255948 10.0-ALPHA4 FreeBSD 10.0-ALPHA4 #1: Fri Oct 18 12:10:57 CEST 2013
 guru@aurora.Sisis.de:/usr/obj/usr/src/sys/GENERIC  i386

I can mount the ext2fs fine and when I say:

# mount -t ext2fs /dev/da1s1 /mnt

# cd /mnt
# gtar --numeric-owner -xpzf shr-image-om-gta02.tar.gz

it gives errors like this example for all special files:

gtar: ./dev/hda7: Cannot utime: Operation not supported
gtar: ./dev/hda7: Cannot change ownership to uid 0, gid 6: Operation not supported
gtar: ./dev/hda7: Cannot change mode to rw-rw----: Operation not supported
...

This issue is clearly related to ext2fs;

in UFS all is fine:

# mkdir dev
# mknod dev/hda7 b 3 7 root:mail
# chmod 0660 dev/hda7
# ls -l dev/hda7
brw-rw----  1 root  mail  0x307 Jan 20 13:25 dev/hda7

in ext2fs mounted on /mnt it does not work:

# mkdir /mnt/dev
# mknod /mnt/dev/hda7 b 3 7 root:mail
mknod: setting ownership on /mnt/dev/hda7: Operation not supported
# chmod 0660 /mnt/dev/hda7
chmod: /mnt/dev/hda7: Operation not supported
# ls -l /mnt/dev/hda7
brw-r--r--  1 root  wheel  0x307 Jan 20 13:26 /mnt/dev/hda7

>How-To-Repeat:

>Fix:

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