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From: Joe Perches <joe@perches.com>
To: Matthew Wilcox <willy@infradead.org>
Cc: Kees Cook <keescook@chromium.org>,
	Nitin Gote <nitin.r.gote@intel.com>,
	akpm@linux-foundation.org, corbet@lwn.net, apw@canonical.com,
	linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
	kernel-hardening@lists.openwall.com,
	Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Subject: Re: [RFC PATCH] string.h: Add stracpy/stracpy_pad (was: Re: [PATCH] checkpatch: Added warnings in favor of strscpy().)
Date: Mon, 22 Jul 2019 11:35:33 -0700	[thread overview]
Message-ID: <207e201cb7a36e38f032bcb66e79e2d4b9b63c7b.camel@perches.com> (raw)
In-Reply-To: <20190722182703.GE363@bombadil.infradead.org>

On Mon, 2019-07-22 at 11:27 -0700, Matthew Wilcox wrote:
> On Mon, Jul 22, 2019 at 10:58:15AM -0700, Joe Perches wrote:
> > On Mon, 2019-07-22 at 10:43 -0700, Joe Perches wrote:
> > > On Mon, 2019-07-22 at 10:33 -0700, Kees Cook wrote:
> > > > On Thu, Jul 04, 2019 at 05:15:57PM -0700, Joe Perches wrote:
> > > > > On Thu, 2019-07-04 at 13:46 -0700, Joe Perches wrote:
[]
> > > > > +#define stracpy(to, from)					\
> > > > > +({								\
> > > > > +	size_t size = ARRAY_SIZE(to);				\
> > > > > +	BUILD_BUG_ON(!__same_type(typeof(*to), char));		\
> > > > > +								\
> > > > > +	strscpy(to, from, size);				\
> > > > > +})
> 
> Where does the 'a' in 'stracpy' come from?

No place in particular.

I used it because dst has to be an 'a'rray rather
than a pointer.



  reply	other threads:[~2019-07-22 18:35 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-04  5:54 [PATCH] checkpatch: Added warnings in favor of strscpy() Nitin Gote
2019-07-04 20:46 ` Joe Perches
2019-07-04 20:46   ` Joe Perches
2019-07-05  0:15   ` [RFC PATCH] string.h: Add stracpy/stracpy_pad (was: Re: [PATCH] checkpatch: Added warnings in favor of strscpy().) Joe Perches
2019-07-05  0:15     ` Joe Perches
2019-07-22 17:33     ` Kees Cook
2019-07-22 17:43       ` Joe Perches
2019-07-22 17:43         ` Joe Perches
2019-07-22 17:58         ` Joe Perches
2019-07-22 17:58           ` Joe Perches
2019-07-22 18:21           ` Kees Cook
2019-07-22 18:27           ` Matthew Wilcox
2019-07-22 18:35             ` Joe Perches [this message]
2019-07-22 18:35               ` Joe Perches

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