[tor-bugs] #20283 [Applications/Tor Browser]: Tor Browser should run without a `/proc` filesystem.

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#20283: Tor Browser should run without a `/proc` filesystem.
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 Reporter:  yawning                   |          Owner:  pospeselr
     Type:  defect                    |         Status:  assigned
 Priority:  Medium                    |      Milestone:
Component:  Applications/Tor Browser  |        Version:
 Severity:  Normal                    |     Resolution:
 Keywords:  tbb-sandboxing            |  Actual Points:
Parent ID:  #20773                    |         Points:
 Reviewer:                            |        Sponsor:
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Comment (by yawning):

 Replying to [comment:16 cypherpunks]:
 > I suspect that glibc relies on /proc only for the initial thread.

 Yes.

 > it is possible that
 >
 > {{{
 > ucontext_t uc;
 > void *base;
 > size_t size;
 >
 > if (getcontext(&uc) == -1)
 >       err(1, "getcontext");
 > base = uc.uc_stack.ss_sp;
 > size = uc.uc_stack.ss_size;
 > }}}
 >
 > will recover the stack base address and size that you want.

 99% sure this does not work without /proc mounted.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/20283#comment:17>
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