Opened 10 months ago

Closed 9 months ago

Last modified 9 months ago

#28843 closed enhancement (fixed)


Reported by: atagar Owned by: nickm
Priority: Low Milestone: Tor: 0.4.0.x-final
Component: Core Tor/Tor Version:
Severity: Minor Keywords:
Cc: Actual Points: .1
Parent ID: Points:
Reviewer: mikeperry Sponsor: Sponsor8-can


Hi Nick! As discussed a DROPOWNERSHIP command would be handy for the following use case...

00:04 <+atagar> Sorry, I'm probably not groking what you're suggesting. 
OwningControllerFd sounds to be for TAKEOWNERSHIP of a control socket 
( Do you 
mean 'don't open a control port, but open a control socket instead'?
00:05 <+nickm> It is more special than that.
00:05 <+nickm> you open a socketpair, and pass one end to tor when you start it
00:06 <+nickm> since the os enforces ownership, you don't need to do any other authentication
00:06 <+atagar> Ah. So stem opens a local socket before starting tor, provides 
this socket as a torrc argument, listens to the bootstrap messages, then 
00:07 <+atagar> That certainly sounds like it would do the trick.
00:08 <+atagar> In this case I don't want tor to terminate when I disconnect 
(which is the usual purpose of TAKEOWNERSHIP), but if I can avoid that this 
sounds perfect.
00:09 <+nickm> sounds like a DROPOWNERSHIP command would be sufficient for your 
needs then
00:09 <+nickm> open a ticket and I'll make one :)
00:10 <+nickm> or remind me next week
00:10 <+atagar> Wonderful! Thanks, will do.

Child Tickets

Change History (8)

comment:1 Changed 10 months ago by nickm

Milestone: Tor: 0.4.0.x-final
Owner: set to nickm
Sponsor: Sponsor8-can
Status: newaccepted

comment:2 Changed 10 months ago by nickm

Implementation in branch ticket28843, PR at

Can anybody else write the control-spec.txt patch?

comment:3 Changed 10 months ago by nickm

Status: acceptedneeds_review

comment:4 Changed 10 months ago by atagar

Thanks Nick! Pushed a prospective spec patch to my 'dropownership' branch. I wasn't quite sure what to cite for the version or if the characteristics I describe are accurate so feedback welcome.

When merged I'll follow this feature up with a few stem integ tests to check for some of these characteristics (idempotenticy and re-establishing ownership).

comment:5 Changed 10 months ago by dgoulet

Reviewer: mikeperry

comment:6 Changed 9 months ago by mikeperry

Status: needs_reviewmerge_ready

I assume the test failure is either some travis issue or other transient failure? Seems unrelated.

This looks good otherwise. The spec too.

Last edited 9 months ago by mikeperry (previous) (diff)

comment:7 Changed 9 months ago by nickm

Resolution: fixed
Status: merge_readyclosed

Great; merged both.

comment:8 Changed 9 months ago by nickm

Actual Points: .1
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