Re: [PATCH 11/20] hwmon: Manual replacement of the deprecated strlcpy() with return values

Joe Perches
2021-02-28T11:51:09Z

On Mon, 2021-02-22 at 07:46 -0800, Guenter Roeck wrote:
> On 2/22/21 7:12 AM, Romain Perier wrote:
> > The strlcpy() reads the entire source buffer first, it is dangerous if
> > the source buffer lenght is unbounded or possibility non NULL-terminated.
>
> length
>
> > It can lead to linear read overflows, crashes, etc...
> >
> Not here. This description is misleading.
>
> > As recommended in the deprecated interfaces [1], it should be replaced
> > by strscpy.
> >
> > This commit replaces all calls to strlcpy that handle the return values
> > by the corresponding strscpy calls with new handling of the return
> > values (as it is quite different between the two functions).
> >
> > [1] https://www.kernel.org/doc/html/latest/process/deprecated.html#strlcpy
> >
> > Signed-off-by: Romain Perier <romain.perier@gmail.com>
>
> This patch just adds pain to injury, as the source 'buffers' are all fixed
> strings and their length will never exceed the maximum buffer length.
> I really don't see the point of using strscpy() in this situation.

Might as well just use strcpy (I'd still prefer stracpy)