[tor-bugs] #19407 [Core Tor/Torsocks]: Support FD passing on Unix socket

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#19407: Support FD passing on Unix socket
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     Reporter:  dgoulet            |      Owner:  dgoulet
         Type:  enhancement        |     Status:  new
     Priority:  Medium             |  Milestone:
    Component:  Core Tor/Torsocks  |    Version:
     Severity:  Normal             |   Keywords:
Actual Points:                     |  Parent ID:
       Points:                     |   Reviewer:
      Sponsor:                     |
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 Multiple issues need FD passing through a Unix socket to work: #8585,
 #16183

 It's maybe possible to support this safely. My intuition is that we might
 be able to get it work by passing some cookies in the ancillary data so we
 can recognize the sendmsg() with the recvmsg(). Maybe!?...

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/19407>
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