Issue solved (somehow).
In our main init script, after having started brltty, the was this line:
rm -rf /var/run/*
Just moving it up (before starting brltty) did the trick.
It looks a little weird though that the issue occurred even with:
-W /run/brltty
in the command line or:
writable-directory=/run/brltty
in brltty.conf
An aside I am not convinced that the benefit of this least privilege thing
is worth the additional complication. Maybe that's related to the fact that
I never could read in full "man capabilities" before falling asleep :-)
Oh and the brltty process started early (by root) still can't be killed with
a SIGTERM, but that's a minor inconvenience, I think. Anyway I have
added -9
to the kill command of our daemon manager in the stop function.
Have a good week-end everybody.
Didier
Le 06/03/2021 à 18:56, Didier Spaier a écrit :
Le 05/03/2021 à 02:23, Dave Mielke a écrit :
> [quoted lines by Didier Spaier on 2021/03/05 at 01:03 +0100]
>
>>> Thanks to Tony, here goes: https://slint.fr/brltty/brltty.log
>>
>> Do you need more information to investigate?
>
> As I think I said, at the time, that log showed brltty terminating
properly
> when receiving SIGTERM. What I need is a log that sows brltty failing to
> terminate on SIGTERM.
No, I don't remember you said that. I have uploaded a file twice in the
same location (with the same name, hence maybe the misunderstanding),
did you look there after the second time? If I remember correctly Tony
killed it with a SGKILL not a SIGTERM. Tonny, do you confirm?
Anyway Philippe (in CC) reproduced the issue, but this time brltty not
starting by a script, but only by udev.
In the use case alsobrltty works in the console but not through Orca.
Additionally, from a tty:
1. Killing brltty with SIGTERM leads to no input on the device, but the
brltty process remains.
2. Starting brltty again starts a second process, but the device still
gets no input
3. Then 'killal -9 brltty' works and starting brltty the device gets
the expected input.
I can still request a debug log in this context, and mount / read-write
from start just editing a line in grub.cfg, but then how should I modify
the udev rules to include the debug options? Should I modify udev.rules
or udev-wrapper and how?
Best regards
Didier
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