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From:   Matthew House <mattlloydhouse@gmail.com>
To:     Rik van Riel <riel@surriel.com>
Cc:     Alejandro Colomar <alx@kernel.org>, linux-man@vger.kernel.org,
        LKML <linux-kernel@vger.kernel.org>, kernel-team@meta.com,
        Eric Biederman <ebiederm@xmission.com>
Subject: Re: [PATCH] execve.2: execve also returns E2BIG if a string is too long
Date:   Wed, 11 Oct 2023 09:52:22 -0400
Message-ID: <20231011135230.750728-1-mattlloydhouse@gmail.com>
In-Reply-To: <20231010234153.021826b1@imladris.surriel.com>
References: <20231010234153.021826b1@imladris.surriel.com>
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On Tue, Oct 10, 2023 at 11:51 PM Rik van Riel <riel@surriel.com> wrote:
> Document that if a command line or environment string is too long (> MAX_=
ARG_STRLEN), execve will also return E2BIG.
>
> Signed-off-by: Rik van Riel <riel@surriel.com>

It might be worth mentioning that strlen(pathname) must also be strictly
less than MAX_ARG_STRLEN, it being subject to the same restrictions as
each of the argv/envp strings.

Thank you,
Matthew House