Re: [PATCH v3] drivers/edac/edac_mc: Remove all strcpy() uses

[Robert Richter]

On 10.08.21 08:02:17, Joe Perches wrote:
> On Tue, 2021-08-10 at 16:36 +0200, Robert Richter wrote:
> > On 09.08.21 10:18:58, Joe Perches wrote:
> > 
> > > strscpy and scnprintf have different return values and it's simpler
> > > and much more common to use scnprintf for appended strings that are
> > > limited to a specific buffer length.
> > 
> > Calculating the bytes written from the return value is a oneliner.
> 
> Not really.
> You still have to test for strscpy's possible return of -E2BIG.

I thought of:

	num = strscpy(p, OTHER_LABEL, len);
	num = num < 0 ? len : num;
	len -= num;
	p += num;

Clearly, this does not look nice, esp. if this is repeated in the
code. That's why I prefer the strlen(p) implementation:

	strscpy(p, OTHER_LABEL, len);
	len -= strlen(p);
	p += strlen(p);

-Robert