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GAI just needs to go. It needs to be moved to its own daemon with a simple RPC.

libc is kinda schizophrenic in this regard. It has mostly obviously low-level functions like string manipulation and memory management, and then unexpectedly a DNS client implementation and a support for arbitrary runtime plugins (for PAM).

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This is essentially what systemd-resolved with the nss-resolve NSS module is right? It’s possible to use /etc/nsswitch.conf to entirely disable the built-in DNS resolution in glibc if you want.

IME, familiarity with /etc/nsswitch.conf and the rest of the nss stuff is very highly correlated with people who have seen some shit.

Yep, it's close. But you still depend on the unholy mess that is nsswitch.conf

It's still a bit worrying, with manual JSON parsing: https://github.com/systemd/systemd/blob/79f487038444646f5bce... But at least it's just ~600 lines of fairly straightforward code.

You also can get most of it with nscd.

(Sigh, I wish BUS1 guys pushed their project to completion)

This, along with the general inability to handle per-interface DNS resolution, is the primary reason systemd-resolved exists.

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