[tor-bugs] #3049 [Tor Client]: Allow a Tor process to be ‘owned’ by a controller process

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#3049: Allow a Tor process to be ‘owned’ by a controller process
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 Reporter:  rransom      |          Owner:  rransom           
     Type:  enhancement  |         Status:  accepted          
 Priority:  major        |      Milestone:  Tor: 0.2.2.x-final
Component:  Tor Client   |        Version:                    
 Keywords:               |         Parent:                    
   Points:               |   Actualpoints:                    
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Comment(by rransom):

 Replying to [comment:6 arma]:
 > The "TAKEOWNERSHIP" part should be quite simple and, I agree, useful. It
 should get us most of what we want.
 >
 > I wonder if we might want to leave the OwningControllerPID part to Tor
 0.2.3 though, since it may introduce bugs (e.g. portability issues) that
 will take a while to settle.

 We can postpone the OS-specific extensions to `__OwningControllerProcess`
 until 0.2.3.x, or test them on 0.2.3.x and backport later.  But we
 currently only support Unixoid systems and Windows NT systems, and the
 generic Unixoid implementation is both highly portable across Unixoids and
 Good Enough for a first implementation.

 (I've renamed the option so that we can leave room for additional OS-
 specific arguments after the PID, because that will allow us to make that
 piece of process ownership less race-prone.)

 > On the Vidalia implementation side, I believe vidalia already starts out
 by running 'tor --version' before trying to run tor for reals. See
 TorProcess::version() in src/torcontrol/TorProcess.cpp. So it should be
 able to predict whether Tor will recognize the OwningControllerPID option.

 Or it could just refuse to start a too-old version of Tor.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/3049#comment:9>
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