polkit does not start

karu.pruun karu.pruun at gmail.com
Fri Jan 9 06:14:40 PST 2015

That's interesting---I wonder if you could tell me what research you
did on dbus and polkit. I would be interested in trying to make it
work. Here's what I've found so far.

I figured out that consolekit and hald are fine, it's polkit that
messes up. Dbus cannot spawn it, and the problem is not dbus, it's
polkit. Since I know almost nothing about dbus and friends my approach
has been to compare with FreeBSD, where it's working fine, and try to
isolate the piece of code where polkit on DragonFly deviates from the
behavior seen on FreeBSD. I ran ktrace on polkit and the deviation
from FreeBSD happens on the second attempt (type: AUTH EXTERNAL) of

---FreeBSD (successful)---
  1579 polkitd  CALL  sendto(0x5,0x803076280,0x12,0x20000<MSG_NOSIGNAL>,0,0)
  1579 polkitd  GIO   fd 5 wrote 18 bytes
       "AUTH EXTERNAL 30\r
  1579 polkitd  RET   sendto 18/0x12
  . . .

  1579 polkitd  CALL  recvfrom(0x5,0x80310f000,0x1000,0,0,0)
  1579 polkitd  GIO   fd 5 read 37 bytes
       "OK 42dd72d3f9cfe49615fb1f2154aabce1\r
  1579 polkitd  RET   recvfrom 37/0x25
--- ---


16116:1     0 polkitd  0.000006 CALL
16116:1     0 polkitd  0.000010 GIO   fd 5 wrote 36 bytes
       "AUTH EXTERNAL 34323934393637323935\r
16116:1     0 polkitd  0.000006 RET   sendto 36/0x24
. . .

16116:1     0 polkitd  0.000520 CALL  recvfrom(0x5,0x800735000,0x1000,0,0,0)
16116:1     0 polkitd  0.000013 GIO   fd 5 read 46 bytes
16116:1     0 polkitd  0.000005 RET   recvfrom 46/0x2e
--- ---

The challenge is to find out why DragonFly computes
'34323934393637323935' for the argument of AUTH EXTERNAL while FreeBSD
does '30'. However, I haven't been able to identify the piece of code
in polkit (and glib-2.0) where that particular call above to sendto()

I compiled polkit and glib with gdb symbols but it seems I might need
more symbols in perhaps other libraries? In any case, so far the call
to sendto() seems to occur in a piece of code that I can't step in.
I'll keep looking.




On Thu, Jan 8, 2015 at 7:45 PM,  <srussell at prodigeinfo.qc.ca> wrote:
> I had the same problem and had to give up. Dbus logs are saying that no
> valid external protocols were found.
> 498557: [dbus-auth.c(1704):handle_auth] server: Trying mechanism EXTERNAL
> 498557: [dbus-auth.c(1624):process_data] server: data: '4294967295'
> 498557: [dbus-auth.c(1026):handle_server_data_external_mech] server: no
> credentials, mechanism EXTERNAL can't authenticate
> 498557: [dbus-auth.c(430):shutdown_mech] server: Shutting down mechanism
> It happens only for the system dbus. I made some reseach and it occurs when
> dbus is trying to reserve the name of a service. Gio returns:
> Lost the name [...] on session bus.
> I verified the pam confiruration and it looked ok.
> Overall:
> -upowerd crashes
> -ConsoleKit can't make a session active
> -X login is freezing a minute or two
> -The session menu of xfce is freezing also for some time
> -any logoff from xfve is freezing temporarilly and leaves some applications
> opened.
> I spent a lot of time trying to figure out the problem, but I had to give
> up. My workaround was to disable the global dbus service. Dbus is still
> available for applications, but I think that dports is disabling it for
> applications as well, when possible.
> SR
> Le 2015-01-08 10:50, karu.pruun a écrit :
>     Hello
>     I seem to have troubles getting polkit working. I have in /etc/rc.conf
>     ---/etc/rc.conf---
>     hald_enable="YES"
>     dbus_enable="YES"
>     --- ---
>     and this combination results in dbus, hald and consolekit services
>     running, but polkitd fails
>     ---/var/log/messages---
>     Jan  8 17:42:55 dfly dbus[984]: [system] Activating service
>     name='org.freedesktop.ConsoleKit' (using servicehelper)
>     Jan  8 17:42:55 dfly console-kit-daemon[1010]: WARNING:
>     polkit_authority_get: Error getting authority: Error initializing
>     authority: Exhausted all available authentication mechanisms (tried:
>     --- ---
>     I ran a quick test on a FreeBSD virtual machine, the above two lines
>     in rc.conf start dbus, hald, consolekit and polkitd and all seems
>     fine. I wonder if I've missed anything on DragonFly?
>     Cheers
>     Peeter
>     --

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