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bug#12632: file permissions checking mishandled when setuid


From: Glenn Morris
Subject: bug#12632: file permissions checking mishandled when setuid
Date: Fri, 19 Oct 2012 15:05:43 -0400
User-agent: Gnus (www.gnus.org), GNU Emacs (www.gnu.org/software/emacs/)

Paul Eggert wrote:

> On 10/19/2012 11:41 AM, Eli Zaretskii wrote:
>> Why are we doing such changes during a feature freeze?
>
> To fix a bug.

If a bug is long-standing and/or minor, and if the fix for it involves
non-trivial modifications, then it can be better to leave it unfixed (at
this stage in the release process), in case a new, more serious or
subtle problem is inadvertently introduced.

Your initial report said "setuid Emacs is mishandling file permissions
on POSIXish platforms that lack 'euidaccess'" and "setuid Emacs is
mishandling these file permissions even on GNUish platforms.".

I doubt anyone is running setuid Emacs anywhere, so this seems like a
theoretical concern.





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