Re: Symlink flag for chmod

[Pádraig Brady]

On 25/01/2024 12:30, Johannes Segitz wrote:
> Hello,
>
> chown has a flag that prevents symlink following. chown/chmod is sometimes
> used in %post/%pre sections of rpm packages to fix up permissions. When
> this is done in user owned directories (somewhere along the path) this is a
> security problem. chown allows users to handle this via the -h flag which
> instructs it not to follow a symlink.
>
> The attached patch adds this flag for chmod. I read
> https://git.savannah.gnu.org/cgit/coreutils.git/plain/README-hacking
> but chmod doesn't have an email listed, so I set the patch here.
>
> Please CC me in replies, I'm not subscribed to the list.

We've been consolidating chown/chmod/chgrp recently,
and I was already looking at this.
I'll incorporate your patch with what I was working on.

thanks!
Pádraig