linux-kernel - Re: [PATCH v2] selftests/exec: include cwd in long path calculation

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Message-ID: <d0da8cd0-e534-5914-ecc5-9483c1bd2407@kernel.org>
Date:   Tue, 17 Oct 2017 08:15:55 -0600
From:   Shuah Khan <shuah@...nel.org>
To:     Steve Muckle <smuckle.linux@...il.com>
Cc:     David Drysdale <drysdale@...gle.com>,
        linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org,
        Shuah Khan <shuah@...nel.org>,
        Shuah Khan <shuahkh@....samsung.com>
Subject: Re: [PATCH v2] selftests/exec: include cwd in long path calculation

On 10/12/2017 10:44 PM, Steve Muckle wrote:
> When creating a pathname close to PATH_MAX to test execveat, factor in
> the current working directory path otherwise we end up with an absolute
> path that is longer than PATH_MAX. While execveat() may succeed, subsequent
> calls to the kernel from the runtime environment which are required to
> successfully execute the test binary/script may fail because of this.
> 
> To keep the semantics of the test the same, rework the relative pathname
> part of the test to be relative to the root directory so it isn't
> decreased by the length of the current working directory path.
> 
> Signed-off-by: Steve Muckle <smuckle.linux@...il.com>

Thanks for the patch. I plan to get this into 4.15-rc1

-- Shuah