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Date: Wed, 25 Sep 2019 14:50:11 -0700
From: Andrew Morton <>
To: Joe Perches <>
Cc: Linus Torvalds <>,, Jonathan Corbet <>, Stephen
 Kitt <>, Kees Cook <>, Nitin Gote
 <>,,, Rasmus Villemoes
Subject: Re: [PATCH V2 1/2] string: Add stracpy and stracpy_pad mechanisms

On Tue, 23 Jul 2019 06:51:36 -0700 Joe Perches <> wrote:

> Several uses of strlcpy and strscpy have had defects because the
> last argument of each function is misused or typoed.
> Add macro mechanisms to avoid this defect.
> stracpy (copy a string to a string array) must have a string
> array as the first argument (dest) and uses sizeof(dest) as the
> count of bytes to copy.
> These mechanisms verify that the dest argument is an array of
> char or other compatible types like u8 or s8 or equivalent.
> A BUILD_BUG is emitted when the type of dest is not compatible.

I'm still reluctant to merge this because we don't have code in -next
which *uses* it.  You did have a patch for that against v1, I believe? 
Please dust it off and send it along?

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