Re: [PATCH] setup: translate symlinks in filename when using absolute paths

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On Tue, Dec 28, 2010 at 11:47:07AM -0800, Junio C Hamano wrote:
> Carlo Marcelo Arenas Belon <carenas@xxxxxxxxxxxxxx> writes:
> 
> > otherwise, comparison to validate against work tree will fail when
> > the path includes a symlink and the name passed is not canonical.
> >
> > Signed-off-by: Carlo Marcelo Arenas Belon <carenas@xxxxxxxxxxxxxx>
> 
> I take that "path" and "name passed" refer to the same thing (i.e. "path"
> parameter) in the above.

yes, and sorry for the cryptic description; you detailed below though this
is triggered by the fact that when using an absolute path filename as a
parameter detection for worktree is failing because it was normalized
through make_absolute_path.

> I think you are trying to handle the case where:
> 
>  - you give "/home/carenas/one" from the command line;
>  - $PWD is "/home/carenas"; and
>  - "/home/carenas" is a symlink to "/net/host/home/carenas"

this will be a valid  scenario, but the issue (with a different use case)
was reported in (which I missed to refer to when running git send-email):

  http://thread.gmane.org/gmane.comp.version-control.git/164212

> and the scan-from-the-beginning-of-string check done between
> "/home/carenas/one" and the return value of get_git_work_tree() which
> presumably is "/net/host/home/carenas" disagrees.  I wonder if a more
> correct solution might be to help get_git_work_tree() to match the notion
> of where the repository and its worktree are to the idea of where the user
> thinks they are, i.e. not "/net/host/home/carenas" but "/home/carenas", a
> bit better?

are you suggesting symlinks would be left untouched at least during
resolution for work_dir?, why is even necesary to resolve the links for
other users of that function?

Carlo
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