Re: Tramp 24.4: /usr/bin/id: cannot find name for group ID

[Kai Großjohann]

I wonder what does, say, "ls -lg" display if there is a user id that has no name or a group id that has no name in its listing? Would it make sense for Tramp to do the same thing?

Kai

On 1 Nov 2014, at 15:46, Michael Albinus wrote:

Emanuele Tomasi address@hidden writes:

I have updated Emacs to version 24.4. When I try to open remote file

with tramp I get this error:

Tramp: Inserting /ssh:remotehost:/remotedir/remotefile.sh'...failed
byte-code:/usr/bin/id -gn | sed -e s/^/\"/ -e s/$/\"/' does not
return a valid
Lisp _expression_: `/usr/bin/id: cannot find name for group ID 20002
"20002"

'

Well, reading the code of `tramp-get-remote-gid', it looks that Tramp has
stronger checks now. That might be the reason, that you see the error.

If I run "/usr/bin/id -gn" on remote host I have:

/usr/bin/id: cannot find name for group ID 20002

20002

Well, it looks like there is a problem on your remote host. Why couldn't
"id" determine the name of your gid 20002?

With Emacs 24.3 I could open that files.

Because of weaker checks. I'm not fully decided, whether we shall return
a dummy group name like "nobody", if the name cannot be determined
remotely. This could result in further problems, I fear.

Anyway, there might be a workaround. The group name is cached in Tramp,
and you could predefine its value like this:

(add-to-list 'tramp-connection-properties
(list (regexp-quote "/ssh:remotehost:")
"gid-string" "myfakedvalue"))

See also the Tramp manual about "Predefined connection information".

Best regards,
Emanuele

Best regards, Michael.

---

Tramp-devel mailing list
address@hidden
https://lists.gnu.org/mailman/listinfo/tramp-devel