> Logged in as user "mharris" and in my home dir, I had a dir
> called "down" owned by root.root with perms 755.
Since the above is not a normal situation, traditional security
behaves oddly. Some "features" just suck.
> This dir had files in it.
>
> As "mharris" I tried to chown the dir to mharris.mharris, and I
> got permission denied. I then tried "rm -rf down/" also as
> mharris, and it successfully let me remove the directory.
This must be stopped:
ln /etc/passwd ~/passwd
chown user.group ~/passwd
The UNIX standard would let us restrict the first operation.
With that absurdity fixed, chown could be relaxed a bit.
Perhaps this: allow chown when the directory owner and new
file owner are both in the set of UIDs held by the process.
That gives you a "take ownership" in directories you own.
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