unofficial mirror of bug-gnu-emacs@gnu.org 
 help / color / mirror / code / Atom feed
From: Eli Zaretskii <eliz@gnu.org>
To: Matt Armstrong <gmatta@gmail.com>
Cc: 46397@debbugs.gnu.org, eggert@cs.ucla.edu, craven@gmx.net
Subject: bug#46397: 27.1; Cannot delete buffer pointing to a file in a path that includes a file
Date: Wed, 10 Feb 2021 17:05:30 +0200	[thread overview]
Message-ID: <83a6scj745.fsf@gnu.org> (raw)
In-Reply-To: <m2blcskbyq.fsf@matts-mbp-2016.lan> (message from Matt Armstrong on Tue, 09 Feb 2021 16:23:09 -0800)

> From: Matt Armstrong <gmatta@gmail.com>
> Date: Tue, 09 Feb 2021 16:23:09 -0800
> Cc: 46397@debbugs.gnu.org, Paul Eggert <eggert@cs.ucla.edu>
> 
> > The backtrace is unsurprising:
> >
> > Debugger entered--Lisp error: (file-error "Unlocking file" "Not a directory" "/private/tmp/tmp/test.txt")
> >   kill-buffer("test.txt")
> >   funcall-interactively(kill-buffer "test.txt")
> >   call-interactively(kill-buffer nil nil)
> >   command-execute(kill-buffer)
> 
> I found that this behavior was introduced by Paul Egger's commit
> 9dc306b1db0, discussed in Bug#37389.  I've cc'd Paul.
> 
> Paul's commit changed unlock_file() (from src/filelock.cc) to report
> errors from unlink(), excempting only ENOENT. This bug demonstrates a
> way to induce an ENOTDIR error. I've attached a patch that ignores
> ENOTDIR as well, which is the most conservative fix I can think of. It
> also seems in-line with Paul's original intent, since he was saying that
> both ENOENT and ENOTDIR are usually "tame."

I think instead of ignoring some errors, we should allow the user to
get out of these situations, after showing the error.  That is,
instead of silently ignoring the error on some low level, we should
propagate it to userlock.el and allow the user to decide whether
he/she wants to ignore the error or do something about that.  These
errors could mean something innocent, or they could mean something
more serious, and we shouldn't second-guess which one is it.

Letting the user decide will also seamlessly solve any other type of
error that could happen when we try to delete the lock file.

So how about coming up with a patch that shows the error message to
the users and asks them whether or not to ignore that and kill the
buffer?

Thanks.





  reply	other threads:[~2021-02-10 15:05 UTC|newest]

Thread overview: 55+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-09  9:47 bug#46397: 27.1; Cannot delete buffer pointing to a file in a path that includes a file Peter
2021-02-09 23:47 ` Matt Armstrong
2021-02-10  0:23   ` Matt Armstrong
2021-02-10 15:05     ` Eli Zaretskii [this message]
2021-02-10 19:23       ` Paul Eggert
2021-02-10 19:45         ` Eli Zaretskii
2021-02-10 22:39           ` Matt Armstrong
2021-02-12  7:43             ` Eli Zaretskii
2021-02-12  9:36               ` Paul Eggert
2021-02-12 11:33                 ` Eli Zaretskii
2021-02-12 23:59                   ` Matt Armstrong
2021-02-13  8:07                     ` Eli Zaretskii
2021-02-11 22:14         ` Matt Armstrong
2021-02-12  2:20           ` Paul Eggert
2021-02-12  7:15             ` Eli Zaretskii
2021-02-13  1:15               ` Matt Armstrong
2021-02-13  1:26                 ` Paul Eggert
2021-02-13  8:21                   ` Eli Zaretskii
2021-02-13  8:28                 ` Eli Zaretskii
2021-02-14  0:49                   ` Matt Armstrong
2021-02-14 19:22                     ` Eli Zaretskii
2021-02-14 22:16                       ` Matt Armstrong
2021-02-15 15:09                         ` Eli Zaretskii
2021-02-16  0:49                           ` Matt Armstrong
2021-02-16  1:55                             ` Paul Eggert
2021-02-16 15:06                               ` Eli Zaretskii
2021-02-16 11:53                             ` Lars Ingebrigtsen
2021-02-22 19:24                             ` bug#46397: [PATCH] " Matt Armstrong
2021-02-19 19:10                           ` Matt Armstrong
2021-02-19 19:23                             ` Eli Zaretskii
2021-02-19 21:46                               ` Matt Armstrong
2021-02-20  9:09                                 ` Eli Zaretskii
2021-02-21  0:36                                   ` Matt Armstrong
2021-02-21 23:43                                     ` Mike Kupfer
2021-02-22  1:42                                       ` Matt Armstrong
2021-03-14 18:03                                         ` Bill Wohler
2021-03-17 23:36                                           ` Matt Armstrong
2021-02-24 17:37                                     ` Matt Armstrong
2021-02-24 18:50                                       ` Eli Zaretskii
2021-03-01 16:59                                       ` Eli Zaretskii
2021-03-05 22:19                                         ` Matt Armstrong
2021-03-06  9:36                                           ` Eli Zaretskii
2021-03-06 23:39                                             ` Matt Armstrong
2021-03-07  2:50                                             ` Paul Eggert
2021-03-07  5:57                                               ` Matt Armstrong
2021-02-19 19:45                             ` Paul Eggert
2021-02-19 21:52                               ` Matt Armstrong
2021-03-08  2:18                               ` Matt Armstrong
2021-03-11 14:34                                 ` Eli Zaretskii
2021-03-17 23:49                                   ` Matt Armstrong
2021-03-17 23:51                                   ` Matt Armstrong
2021-03-20 10:43                                     ` Eli Zaretskii
2021-03-22  1:43                                       ` Matt Armstrong
2021-03-27  9:20                                         ` Eli Zaretskii
2021-02-10  0:26   ` Matt Armstrong

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

  List information: https://www.gnu.org/software/emacs/

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=83a6scj745.fsf@gnu.org \
    --to=eliz@gnu.org \
    --cc=46397@debbugs.gnu.org \
    --cc=craven@gmx.net \
    --cc=eggert@cs.ucla.edu \
    --cc=gmatta@gmail.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
Code repositories for project(s) associated with this public inbox

	https://git.savannah.gnu.org/cgit/emacs.git

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).