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Re: [tor-bugs] #11090 [Core Tor/Torsocks]: torsocks should log errors to stderr and not stdout



#11090: torsocks should log errors to stderr and not stdout
-------------------------------+-----------------------------------
 Reporter:  infinity0          |          Owner:  dgoulet
     Type:  defect             |         Status:  needs_information
 Priority:  Medium             |      Milestone:
Component:  Core Tor/Torsocks  |        Version:
 Severity:  Normal             |     Resolution:
 Keywords:                     |  Actual Points:
Parent ID:                     |         Points:
 Reviewer:                     |        Sponsor:
-------------------------------+-----------------------------------
Changes (by dgoulet):

 * status:  assigned => needs_information
 * severity:   => Normal


Comment:

 I can confirm that torsocks does write errors on `stderr` with the gpg
 test case in last comment:

 {{{
 16512 write16512 write(2, "[Jun 13 17:19:04] PERROR torsock"..., 120) =
 120 (2, "[Jun 13 17:19:04] PERROR torsock"..., 120) = 120
 }}}

 So I think here the issue is a multi process one. In the strace I see that
 gpg calls:

 {{{
 16512 execve("/usr/lib/gnupg/gpgkeys_hkp", ["/usr/lib/gnupg/gpgkeys_hkp"],
 [/* 56 vars */] <unfinished ...>
 }}}

 ... and for that process, `2>/dev/null` seems to not being applied. That's
 possibly an issue with torsocks that is the redirection to devnull is not
 given to the `gpg` process (maybe?)...

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/11090#comment:14>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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