[PATCH] afs: proc cells and rootcell are writeable

[David Howells]

Further:

	[root at andromeda ~]# touch /tmp/foo
	[root at andromeda ~]# chmod 0444 /tmp/foo
	[root at andromeda ~]# ls -l /tmp/foo
	-r--r--r--. 1 root root 0 Jan 31 00:17 /tmp/foo
	[root at andromeda ~]# echo hello >/tmp/foo
	[root at andromeda ~]# ls -l /tmp/foo
	-r--r--r--. 1 root root 6 Jan 31 00:17 /tmp/foo
	[root at andromeda ~]# 

But:

	[root at andromeda ~]# su - dhowells
	[dhowells at andromeda ~]$ touch /tmp/bar
	[dhowells at andromeda ~]$ chmod 0444 /tmp/bar
	[dhowells at andromeda ~]$ ls -l /tmp/bar
	-r--r--r--. 1 dhowells dhowells 0 Jan 31 00:19 /tmp/bar
	[dhowells at andromeda ~]$ echo hello >/tmp/bar
	-bash: /tmp/bar: Permission denied

David