Lennart Poettering
344874fcd0
Let's tighten the cases when our module returns NSS_STATUS_NOTFOUND. Let's do
so only if we actually managed to talk to resolved. In all other cases stick to
NSS_STATUS_UNAVAIL as before, as it clearly indicates that our module or the
system is borked, and the "dns" fallback should really take place.
In particular this fixes the 2nd-level fallback from our own dlopen() based
fallback handling. In this case we really should return UNAVAIL so that the
caller can apply its own fallback still.
Fix-up for d7247512a9.
Note that our own dlopen() based fallback is pretty much redundant now if
nsswitch.conf is configured like this:
hosts: files mymachines resolve [!UNAVAIL=return] dns myhostname
In a future release we should probably drop our internal fallback then, in
favour of this nsswitch.conf-based one.
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