linux-kernel - Re: [PATCH 3/6] security: Introduce security

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Date:	Wed, 15 Jul 2015 12:24:09 +0200 (CEST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Baolin Wang <baolin.wang@...aro.org>
cc:	serge.hallyn@...onical.com, arnd@...db.de, john.stultz@...aro.org,
	linux-kernel@...r.kernel.org, james.l.morris@...cle.com,
	serge@...lyn.com, paul@...l-moore.com, john.johansen@...onical.com,
	sds@...ho.nsa.gov, casey@...aufler-ca.com,
	penguin-kernel@...ove.SAKURA.ne.jp, neilb@...e.de,
	edumazet@...gle.com, jlayton@...marydata.com,
	linux-security-module@...r.kernel.org, y2038@...ts.linaro.org
Subject: Re: [PATCH 3/6] security: Introduce security_settime64()

On Wed, 15 Jul 2015, Baolin Wang wrote:

> security_settime() returns a timespec, which is not year 2038 safe

It returns int, which is year 2038 safe on all systems. Copy and paste
is great, right?

> -int security_settime(const struct timespec *ts, const struct timezone *tz);
> +int security_settime64(const struct timespec64 *ts, const struct timezone *tz);
> +static inline int security_settime(const struct timespec *ts, const struct timezone *tz)
> +{
> +	struct timespec64 ts64 = timespec_to_timespec64(*ts);
> +
> +	return security_settime64(&ts64, tz);
> +}

What's the point of this inline? Explanation is missing in
changelog.

Also this wants follow up patches which fix the call sites and remove
that inline helper again.

> -int cap_settime(const struct timespec *ts, const struct timezone *tz)
> +int cap_settime(const struct timespec64 *ts, const struct timezone *tz)

Changelog is missing that none of the existing hooks is using the ts
argument and therefor the patch is not doing any functional changes.

Thanks,

	tglx
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