[PATCH] Linux: Simplify __opensock and fix race condition [BZ #28353]

[Andreas Schwab]

On Sep 27 2021, Florian Weimer via Libc-alpha wrote:

> AF_NETLINK support is not quite optional on modern Linux systems
> anymore, so it is likely that the first attempt will always succeed.
> Consequently, there is no need to cache the result.  Keep AF_UNIX
> and the Internet address families as a fallback, for the rare case
> that AF_NETLINK is fixing.

Fixing what?

Andreas.

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Andreas Schwab, schwab@linux-m68k.org
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