Re: [PATCH v6 3/8] sysctl: Warn when a clamped sysctl parameter is set out of range
From: Waiman Long
Date: Tue May 01 2018 - 09:41:13 EST
On 04/30/2018 06:40 PM, Kees Cook wrote:
> I like this series overall, thanks! No objections from me. One thing I
> noted, though:
>
> On Fri, Apr 27, 2018 at 2:00 PM, Waiman Long <longman@xxxxxxxxxx> wrote:
>> if (param->min && *param->min > val) {
>> if (clamp) {
>> val = *param->min;
>> + clamped = true;
>> } else {
>> return -EINVAL;
>> }
> This appears as a common bit of logic in many places in the series. It
> seems like it'd make sense to make this a helper of some kind?
>
> -Kees
>
We can't have an inline helper function because the types are different.
We may be able to use a helper macro, but helper macro like that may be
not well accepted by the kernel community.
Cheers,
Longman