Read and write list ordering

[Uri Simchoni]

On 07/20/2016 10:59 PM, Justin Maggard wrote:
> On Sun, Jul 17, 2016 at 04:00:15PM +0200, Volker Lendecke wrote:
>> On Sat, Jul 16, 2016 at 03:42:54PM -0700, Jeremy Allison wrote:
>>> Can we make such a change in a new major release ? i.e. would
>>> such a patch be acceptable in a 4.5.0 release - so long as it
>>> is fully documented in the release notes ?
>>
>> No from my point of view. We need a fresh set of options for this.
>> This behaviour has been in Samba for so long, I've even put this into
>> a book I've written long ago. God knows how many setups we're going to
>> break.
> 
> I'll live with whatever the final verdict is.  I just want to first
> make sure that everyone is clear on what we'd actually be breaking
> though.  There is exactly one case that would change behavior with my
> patch.  That one case consists of a user populating "read list" with
> individual user accounts, then summarily overriding those entries by
> adding a group entry for a group that encompasses those users to
> "write list".  It's hard for me to imagine anyone doing that
> intentionally.  It seems more likely to me that there are many users
> out there with configurations that are less restrictive than they
> expect (which is, in fact, where the motivation for my patch came
> from).
> 
> If we stick with the status quo, could we at least make the
> documentation more explicit about this peculiarity?
> 
> -Justin
> 
I read the following under "write list" in smb.conf.5:

"""
Note that if a user is in both the read list and the write list then
they will be given write access.
"""

Uri.