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Date: Fri, 23 Oct 2020 14:09:07 +0200
From: Florian Weimer <fweimer@...hat.com>
To: Tim Tassonis <stuff@...entral.ch>
Cc: musl@...ts.openwall.com
Subject: Re: Plans to remove nscd in Fedora
* Tim Tassonis:
> On 10/23/20 1:35 PM, Florian Weimer wrote:
>> * Rich Felker:
>>
>>> The only capacity in which musl uses nscd is to access custom
>>> user/group backends provided through it.
>> And that's the only way to get this data into musl programs.
>>
>>> musl specifically does not use nss itself because it's not compatible
>>> with static linking and because loading arbitrary module libraries
>>> into the calling process's core is not safe and goes against best
>>> practices. I believe the glibc folks were starting to realize this
>>> too, so it was kinda my hope that nscd would become the main/only way
>>> nss modules are accessed on glibc too.
>> This requirement has largely been pushed into the NSS modules
>> themselves. If they do more than just opening a files or sockets, they
>> need to offload part of the functionality (actually most of it) into a
>> separate daemon. This is the difference between nss_ldap and nss_ldapd.
>> SSSD has largely assumed this role for the non-hosts maps. It looks
>> like that systemd-resolved will cover the hosts maps. So it's unclear
>> what's left for nscd to handle.
>
> You might not know about this, but there is actually a world beyond
> Redhat/Fedora/Systemd.
Yes, we know that. Which is why Arjun reached out to you. Was this a
mistake? Is the musl community not interested in compatibility with
Fedora and its downstream distributions?
Thanks,
Florian
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