GNU logs - #33270, boring messages

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Subject: bug#33270: [SHEPHERD] Wrong error message when missing priviledge
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Hi

sdb@komputilo ~$ herd status
error: connect: /run/user/30011/shepherd/socket: No such file or director=
y

sdb@komputilo ~$ sudo herd status
Password:
Started:
 =C2=A0+ console-font-tty1
 =C2=A0+ console-font-tty2
 =C2=A0+ console-font-tty3
 =C2=A0+ console-font-tty4
...


--=20
Cheers
Swedebugia

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Subject: bug#33270: Acknowledgement ([SHEPHERD] Wrong error message when
 missing priviledge)
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Subject: bug#33270: [SHEPHERD] Wrong error message when missing priviledge
Resent-From: Ricardo Wurmus <rekado@HIDDEN>
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swedebugia <swedebugia@HIDDEN> writes:

> sdb@komputilo ~$ herd status
> error: connect: /run/user/30011/shepherd/socket: No such file or directory

It is possible to run shepherd as a user service manager.  This means
that we can=E2=80=99t generally assume that the user meant to communicate w=
ith
the init instance.

The error could be that either the user=E2=80=99s instance is not running or
that the user meant to communicate with the init system.  It is not
obvious to me how to distinguish these two errors.

--
Ricardo

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Subject: bug#33270: [SHEPHERD] Wrong error message when missing priviledge
Resent-From: =?UTF-8?Q?G=C3=A1bor?= Boskovits <boskovits@HIDDEN>
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From: =?UTF-8?Q?G=C3=A1bor?= Boskovits <boskovits@HIDDEN>
Date: Mon, 5 Nov 2018 22:57:15 +0100
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Hello Ricardo,

Ricardo Wurmus <rekado@HIDDEN> ezt =C3=ADrta (id=C5=91pont: 2018. nov.=
 5., H, 20:50):
>
>
> swedebugia <swedebugia@HIDDEN> writes:
>
> > sdb@komputilo ~$ herd status
> > error: connect: /run/user/30011/shepherd/socket: No such file or direct=
ory
>

Actually this seems to be a message that can be translated to
'shepherd user instance is not running' am I correct?
I guess that way it is explicit that the command given would like to
talk to a shepherd user instance. Am I missing something here?

> It is possible to run shepherd as a user service manager.  This means
> that we can=E2=80=99t generally assume that the user meant to communicate=
 with
> the init instance.
>
> The error could be that either the user=E2=80=99s instance is not running=
 or
> that the user meant to communicate with the init system.  It is not
> obvious to me how to distinguish these two errors.
>
> --
> Ricardo
>
>
>
>

Best regards,
g_bor

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Subject: bug#33270: [SHEPHERD] Wrong error message when missing priviledge
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Hi Gabor,

On Mon, 5 Nov 2018 22:57:15 +0100
G=C3=A1bor Boskovits <boskovits@HIDDEN> wrote:
> > > sdb@komputilo ~$ herd status
> > > error: connect: /run/user/30011/shepherd/socket: No such file or dire=
ctory =20
>=20
> Actually this seems to be a message that can be translated to
> 'shepherd user instance is not running' am I correct?

Yes, that's what it means.  For a UNIX error message, what it's saying
is actually quite close to what it really means. :)

I would suggest to keep the file name in the error message anyway,
but no harm in adding some extra information (it will slightly complicate
the socket discovery code, but that's okay.  Also, right now profiles can
actually set up XDG_RUNTIME_DIR to point somewhere else and make herd conne=
ct
to the profile's shepherd's socket - which is nice, but is not really a *us=
er"
shepherd then anymore).

Also, we should suppress the stack trace for this specific error since it
really doesn't add anything useful.

> > The error could be that either the user=E2=80=99s instance is not runni=
ng or
> > that the user meant to communicate with the init system.  It is not
> > obvious to me how to distinguish these two errors.

I don't think it's possible to distinguish these.

It would be possible to make herd fallback to the system shepherd if it can=
't
find the stuff in the user shepherd, but I'm not sure I'd like it.

Better, we could add "--user" and "--system" options to force herd to conne=
ct to
some specific shepherd regardless of user, at the cost of hard-coding that =
there
are only these two (which is not actually the case - shepherd is meant to be
used in a modular way and doesn't care one way or another how often and whe=
re
exactly you run it).

It's kinda weird to have different endpoints depending on whether one is ro=
ot or
not, but as a default it has precedent in both dbus and systemd.

I think people can get used to it (we should document it).

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From: =?UTF-8?Q?G=C3=A1bor?= Boskovits <boskovits@HIDDEN>
Date: Tue, 6 Nov 2018 08:55:49 +0100
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Hello Danny,

Danny Milosavljevic <dannym@HIDDEN> ezt =C3=ADrta (id=C5=91pont: 2=
018.
nov. 5., H, 23:49):
>
> Hi Gabor,
>
> On Mon, 5 Nov 2018 22:57:15 +0100
> G=C3=A1bor Boskovits <boskovits@HIDDEN> wrote:
> > > > sdb@komputilo ~$ herd status
> > > > error: connect: /run/user/30011/shepherd/socket: No such file or di=
rectory
> >
> > Actually this seems to be a message that can be translated to
> > 'shepherd user instance is not running' am I correct?
>
> Yes, that's what it means.  For a UNIX error message, what it's saying
> is actually quite close to what it really means. :)
>
> I would suggest to keep the file name in the error message anyway,
> but no harm in adding some extra information (it will slightly complicate
> the socket discovery code, but that's okay.  Also, right now profiles can
> actually set up XDG_RUNTIME_DIR to point somewhere else and make herd con=
nect
> to the profile's shepherd's socket - which is nice, but is not really a *=
user"
> shepherd then anymore).
>
> Also, we should suppress the stack trace for this specific error since it
> really doesn't add anything useful.
>
> > > The error could be that either the user=E2=80=99s instance is not run=
ning or
> > > that the user meant to communicate with the init system.  It is not
> > > obvious to me how to distinguish these two errors.
>
> I don't think it's possible to distinguish these.
>
> It would be possible to make herd fallback to the system shepherd if it c=
an't
> find the stuff in the user shepherd, but I'm not sure I'd like it.

I would not like this either.

>
> Better, we could add "--user" and "--system" options to force herd to con=
nect to
> some specific shepherd regardless of user, at the cost of hard-coding tha=
t there
> are only these two (which is not actually the case - shepherd is meant to=
 be
> used in a modular way and doesn't care one way or another how often and w=
here
> exactly you run it).

Could we instead just give a hint like, "if you intended to communicate wit=
h the
system shepherd, please specify -s system_sepherd_socket_name_here on you
command"?

>
> It's kinda weird to have different endpoints depending on whether one is =
root or
> not, but as a default it has precedent in both dbus and systemd.
>
> I think people can get used to it (we should document it).

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