[tor-bugs] #16106 [Tor]: Sandbox causes crash when creating a hidden service through the control port

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#16106: Sandbox causes crash when creating a hidden service through the control
port
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     Reporter:  micahlee  |      Owner:
         Type:  defect    |     Status:  new
     Priority:  normal    |  Milestone:  Tor: 0.2.7.x-final
    Component:  Tor       |    Version:  Tor: 0.2.5.12
   Resolution:            |   Keywords:  TorCore201508
Actual Points:            |  Parent ID:
       Points:            |
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Comment (by yawning):

 Replying to [comment:2 nickm]:
 > Hm. Probably the right fix here is that we can't allow ADDONION in this
 case, since we can't grant ourselves permission to open these files.

 `ADD_ONION` doesn't create a directory (it doesn't touch the file system
 at all as a matter of fact), so it should work just fine.

 That said, we should warn instead of crashing if someone tries to use
 `SETCONF` to add a new HS to a running sandboxed tor instance.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/16106#comment:4>
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