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bug#11912: 24.1; 'M' in Dired on a symlink does not refresh the display
From: |
Lars Ingebrigtsen |
Subject: |
bug#11912: 24.1; 'M' in Dired on a symlink does not refresh the display |
Date: |
Wed, 25 Aug 2021 12:57:56 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) |
Paul Eggert <eggert@cs.ucla.edu> writes:
> * I neglected to document this behavior change, so I just now
> installed the attached to fix that oversight.
I understand the security-related reasons for changing the `M' command,
but I'm wondering whether they are weighty enough to make it more
inconvenient for the user to use symlinks in Emacs.
The reasoning is that an attacker may control a symlink and make it
point to somewhere else. So I may have
lrwxrwxrwx 1 evil evil 17 Aug 25 12:52 foosym ->
/tmp/IMG_4475.JPG
in my dired buffer, and then "evil" changes the link to point to
somewhere else, and then I say `M' on the link, and then I operated on
the wrong file.
However, on the command line, chmod is fine with following symlinks, so
the user can just `! chmod 0444' instead, and the same will happen.
So is inconveniencing people who are using the `M' command worth it?
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog: http://lars.ingebrigtsen.no
- bug#11912: 24.1; 'M' in Dired on a symlink does not refresh the display, Michalis V., 2021/08/24
- bug#11912: 24.1; 'M' in Dired on a symlink does not refresh the display, Lars Ingebrigtsen, 2021/08/24
- bug#11912: 24.1; 'M' in Dired on a symlink does not refresh the display, Paul Eggert, 2021/08/24
- bug#11912: 24.1; 'M' in Dired on a symlink does not refresh the display, Richard Stallman, 2021/08/25
- bug#11912: 24.1; 'M' in Dired on a symlink does not refresh the display, Lars Ingebrigtsen, 2021/08/26
- bug#11912: 24.1; 'M' in Dired on a symlink does not refresh the display, Andreas Schwab, 2021/08/26
- bug#11912: 24.1; 'M' in Dired on a symlink does not refresh the display, Paul Eggert, 2021/08/26
- bug#11912: 24.1; 'M' in Dired on a symlink does not refresh the display, Richard Stallman, 2021/08/26
bug#11912: 24.1; 'M' in Dired on a symlink does not refresh the display, Michalis V., 2021/08/25