[PATH] support for UNIX socket in abstract namespace

[Roberto De Ioris]

(Warning this is Linux only)

Hi all, the attached path adds support for unix socket in abstract namespace.
They are special sockets without filesystem correspondence (so you can use
them without thinking about permissions or in chroot). In netstat they are
reported with a '@' prefix.

For example (using uWSGI):

uwsgi -s @funnysock

netstat -l

unix  2      [ ACC ]     STREAM     LISTENING     23813    @funnysock

After applying the patch you can connect to it with

uwsgi_pass unix:@funnysock;

I hope it can be useful

-- 
Roberto De Ioris
http://unbit.it
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