GNU bug report logs - #21699
24.5; Bug in backup-buffer-copy and/or set-file-extended-attributes etc

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Eli Barzilay <eli <at> barzilay.org>
Cc: 21699 <at> debbugs.gnu.org
Subject: bug#21699: 24.5; Bug in backup-buffer-copy and/or set-file-extended-attributes etc
Date: Mon, 19 Oct 2015 12:09:39 +0300

> Date: Mon, 19 Oct 2015 05:03:19 -0400
> From: Eli Barzilay <eli <at> barzilay.org>
> Cc: 21699 <at> debbugs.gnu.org
> 
> On Mon, Oct 19, 2015 at 4:23 AM, Eli Zaretskii <eliz <at> gnu.org> wrote:
> >
> > AFAIU, this means you don't have full access ("FA") to the file you
> > are editing, and I guess that's why chmod fails.  If so, there's not
> > much we can do about that.
> >
> > However, with set-file-extended-attributes fixed, backing up works
> > again for you, is that right?
> 
> Yes.  (On both.)

OK, thanks.  Can we close this bug?

> >> I suspect that some of those ACL entries mean that my user is not
> >> allowed to change the file.  In any case, the error that I got when I
> >> played with it is:
> >>
> >> Debugger entered--Lisp error: (file-error "Doing chmod" "permission
> >> denied" "c:/eli/.backups/!drive_l!lambda!tmp!x~")
> >>   set-file-modes("c:/eli/.backups/!drive_l!lambda!tmp!x~" 438)
> >>   eval((set-file-modes "c:/eli/.backups/!drive_l!lambda!tmp!x~" 438) nil)
> >
> > Yes, I think your suspicion is correct.  (In general, I'd suggest to
> > take ownership, from the Windows side, on all of the files on that
> > Linux volume you are using from Windows.  IME, this avoids many
> > problems with access denial from the Windows side.)
> 
> Yeah, I didn't get to deal with that yet, and maybe will never since
> this is a Win7 machine, and I think that on 10 these things changed.

I don't have a Windows 10 system nearby to see if anything's changed
in that regard.  Any pointers?

Thanks.

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