linux-kernel - Re: [RESEND PATCH 1/7] time: Delete do_sys

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Message-ID: <alpine.DEB.2.20.1703191152020.3781@nanos>
Date:   Sun, 19 Mar 2017 11:57:56 +0100 (CET)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Deepa Dinamani <deepa.kernel@...il.com>
cc:     linux-kernel@...r.kernel.org, john.stultz@...aro.org,
        arnd@...db.de, y2038@...ts.linaro.org
Subject: Re: [RESEND PATCH 1/7] time: Delete do_sys_setimeofday()

On Sat, 18 Mar 2017, Deepa Dinamani wrote:

> struct timespec is not y2038 safe. The plan is to
> get rid of all uses of timespec internally in the
> kernel. Replace uses of timespec with timespec64.
> The syscall interfaces will be changed in a separate
> series.
> Call to do_sys_setimeofday() is superfluous as all
> the necessary checks and functions are done by the
> underlying function do_sys_setimeofday64().
> Replace do_sys_setimeofday64() directly instead of
> do_sys_settimeofday(). The do_sys_setimeofday64()
> calls timespec64_valid() internally, which is the
> same as timespec_valid().

Again, this is hard to read and contains too much useless information,

  struct timespec is not Y2038 safe on 32 bit machines and needs to be
  replaced with struct timespec64.

  do_sys_settimeofday() is a wrapper around do_sys_settimeofday64().

  Convert all call sites to use do_sys_seetimeofday64() and remove it.

 
> @@ -109,7 +109,7 @@ COMPAT_SYSCALL_DEFINE2(settimeofday, struct compat_timeval __user *, tv,
>  		       struct timezone __user *, tz)
>  {
>  	struct timeval user_tv;
> -	struct timespec	new_ts;
> +	struct timespec64 new_ts;

Please use the ordering I pointed out in the other mail.

Thanks,

	tglx