Re: [PATCH 0/2] Documentation/binfmt-misc.rst: Clarify "P" flag

[Charlie Jenkins <thecharlesjenkins@gmail.com>]

On Tue, Apr 21, 2026 at 10:29:07AM -0700, Kees Cook wrote:
> On Sun, Apr 19, 2026 at 12:11:01AM -0400, Charlie Jenkins wrote:
> > Improve the wording of the description of the "P" flag to explain that
> > the interpreter gets the path to the file provided by execve and not the
> > full path as well as documenting that AT_FLAGS can be read to see if the
> > "P" flag is set.
> 
> Thanks for the clarifications! I'll get this into the execve tree once
> the merge window is over. (I usually wait for -rc2 to be released.)
> (Or maybe this should go via linux-doc? I should add this file to the
> EXEC entry in MAINTAINERS...)
> 
> How did you happen across this mismatch(?weakness?) in the docs?

I was writing an interpreter application that was using binfmt-misc and
was using this documentation to do so. I was getting unexpected results
so I read through the kernel code to figure out what was going on.

- Charlie

> 
> -Kees
> 
> -- 
> Kees Cook