linux-kernel - Re: [PATCH v20 1/6] exec: Add a new AT

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Message-ID: <20241014.ke5eeKoo6doh@digikod.net>
Date: Mon, 14 Oct 2024 09:39:52 +0200
From: Mickaël Salaün <mic@...ikod.net>
To: "Serge E. Hallyn" <serge@...lyn.com>
Cc: Al Viro <viro@...iv.linux.org.uk>, 
	Christian Brauner <brauner@...nel.org>, Kees Cook <keescook@...omium.org>, 
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Subject: Re: [PATCH v20 1/6] exec: Add a new AT_CHECK flag to execveat(2)

On Sat, Oct 12, 2024 at 10:04:16PM -0500, Serge E. Hallyn wrote:
> On Fri, Oct 11, 2024 at 08:44:17PM +0200, Mickaël Salaün wrote:
> > Add a new AT_CHECK flag to execveat(2) to check if a file would be
> 
> Apologies for both bikeshedding and missing earlier discussions.
> 
> But AT_CHECK sounds quite generic.  How about AT_EXEC_CHECK, or
> AT_CHECK_EXEC_CREDS?  (I would suggest just AT_CHECK_CREDS since
> it's for use in execveat(2), but as it's an AT_ flag, it's
> probably worth being more precise).

As Amir pointed out, we need at least to use the AT_EXECVE_CHECK_
prefix, and I agree with the AT_EXECVE_CHECK name because it's about
checking the whole execve request, not sepcifically a "creds" part.