[Pkg-samba-maint] Bug#963971: samba-libs: libndr.so.0 gone from latest version, breaks sssd-ad-common dependency

[Andrew Bartlett]

On Mon, 2020-06-29 at 08:46 -0400, Michael Stone wrote:
> Package: samba-libs
> Version: 2:4.12.3+dfsg-2
> Severity: critical
> Justification: breaks the whole system
> 
> The new samba-libs package changes the soname of libndr from
> libndr.so.0 to
> libndr.so.1 without reflecting this change in the package name. sssd-
> ad-common
> has a dependency on samba-libs (>= 2:4.11.5+dfsg) and links to
> libndr.so.0.
> When the samba-libs package is updated and libndr.so.0 disappears
> sssd fails to
> start, which then makes a system's remote users unavailable. (Worse,
> this
> doesn't happen until the next time sssd restarts--which may not be
> until the
> next reboot.)
> 
> It's not clear why the samba-libs package doesn't include the so
> number, but at
> the very least it needs a set of dependencies to avoid breaking sssd-
> ad-common.

We can't put a version number in samba-libs as there are multiple
public libraries in there.

(Upstream) Samba doesn't promise not to keep doing this - the
underlying change has happened before, but this time we were honest and
bumped the .so - so sssd may need to have a dependency on the Samba
version it built against. 

Andrew Bartlett

-- 
Andrew Bartlett                       https://samba.org/~abartlet/
Authentication Developer, Samba Team  https://samba.org
Samba Developer, Catalyst IT          
https://catalyst.net.nz/services/samba