Philipp Middendorf <pmid...@mailbox.org> writes:
> Hi Michael,
Hi Philipp,
> thanks for digging through that giant of a log file. It seems you
> conclude that tramp's behavior is fine as it is. But is it? I can
> clearly access the files and directories, manually via "ssh ...; cd
> ...;" and even through tramp, as demonstrated via ido. But then with
> dired, tramp can somehow not do it anymore? Is tramp doing an extra
> permissions check here that fails, or what's the deeper reason behind
> the error? In other words, what's different from the way tramp
> accesses files vs. tramp+ido or me ssh'ing into the machine?
The problem is the call of access-file, which checks, whether a file or
directory is accessible. Internally, it calls file-accessible-directory-p.
This has a simple implementation in Tramp:
--8<---------------cut here---------------start------------->8---
(defun tramp-handle-file-accessible-directory-p (filename)
"Like `file-accessible-directory-p' for Tramp files."
(and (file-directory-p filename)
(file-readable-p filename)))
--8<---------------cut here---------------end--------------->8---
And this fails for the file-readable-p part.
I suspect, that ido doesn't call access-file for the directory. However
I'm curious to understand why ido can read files in that directory,
although it has permissions "dr-xr-x---", and you are neither the user
"fsdata" nor in the "fsdata" group. Is there a hidden setting on that
machine, that you can read the contents of the directory nevertheless?
> PS: I'm in the Hamburg branch of DESY, but we're in close relations
> with Zeuthen. Funny that you know of it. :)
Well, I'm living in the neighbor village of Zeuthen, in Wildau. And
decades ago, I've worked for a research institute in Berlin Adlershof,
which was a spin-off of the predecessor of desy Zeuthen
<https://en.wikipedia.org/wiki/DESY#Zeuthen>. Achhhh ...
> Cheers
> Philipp
Best regards, Michael.
