linux-kernel - Re: [PATCH v2] lib: string.c: Added a funktion function strzcpy

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Message-ID: <CAFo99gZqNwwQMknCSW8uQSfJS2Lheq0gwQKNSBp1XTQGd3nQ=w@mail.gmail.com>
Date:	Thu, 16 Oct 2014 23:09:00 +0200
From:	Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Grant Likely <grant.likely@...aro.org>,
	Andi Kleen <ak@...ux.intel.com>,
	Dan Carpenter <dan.carpenter@...cle.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] lib: string.c: Added a funktion function strzcpy

2014-10-16 0:15 GMT+02:00 Andrew Morton <akpm@...ux-foundation.org>:
> On Sun,  5 Oct 2014 15:06:17 +0200 Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se> wrote:
>
>> Added a function strzcpy which works the same as strncpy,
>> but guaranteed to produce the trailing null character.
>>
>> There are many places in the code where strncpy used although it
>> must be zero terminated, and switching to strlcpy is not an option
>> because the string must nonetheless be fyld with zero characters.
>
> As I mentioned last time, I think this patch would be better if it came
> with follow-on patches which convert at least some of those callsites.
> As it stands, this function has no callers and hence it won't get
> tested.  Plus those follow-on patches will demonstrate the value of
> this patch and will provide example usages.


Hi

Sure I can do that! I have saved some patches just to be able to use
this new feature.
But should I submit everything as one patch then?
Or is there some kind of dependency thing I can use...

I have also e-mailed with Dan about this, he pointed out the same as
some of my tests indicate that strzcpy maybe just should use strncpy
and add a null character instead because strncpy is optimized
depending on the hardware it runs on.
What do you think about that?


Kind regards
Rickard Strandqvist
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