[Pkg-samba-maint] Bug#1002059: regression: 2:4.9.5+dfsg-5+deb10u2 breaks SID to UID conversion

[Michael Tokarev]

Control: tag -1 + moreinfo

On Tue, 8 Feb 2022 00:54:18 +0000 "McIntyre, Vincent (S&A, Marsfield)" <Vincent.Mcintyre at csiro.au> wrote:
> One more followup.
> 
> I looked into migrating my samba machines to bullseye.
> The config I had on buster works but with one change reqired.
> On bullseye machines I need to add this to the configuration
> 
>   username map script = /etc/samba/usermap.sh
> 
> The usermap.sh works similarly to the script pasted in this bug:
> 
>    https://bugzilla.samba.org/show_bug.cgi?id=14901
> 
> ie it converts a 'DOMAIN\someuser' string to 'someuser',
> depending on whether DOMAIN is an expected value or not.
> This is not required on buster, more on that below.

Vincent, do you, by a chance, have the same usernames in
/etc/passwd and in the AD your samba server joined?

What you describe smells like you have the same username
here and there.

As the samba people told me, this is unsupported, a usee
should be either in AD or in local /etc/passwd but not
both. I think it is a bug (which is even easy to fix).

Is it the case here?

Thanks,

/mjt