Re: [PATCH v3 4/4] um: Convert strscpy() usage to 2-argument style

[Andy Shevchenko]

On Tue, Feb 6, 2024 at 4:22 PM Kees Cook <keescook@xxxxxxxxxxxx> wrote:
>
> The ARCH=um build has its own idea about strscpy()'s definition. Adjust
> the callers to remove the redundant sizeof() arguments ahead of treewide
> changes, since it needs a manual adjustment for the newly named
> sized_strscpy() export.

..

> -               strscpy(dir, home, sizeof(dir));
> +               strscpy(dir, home);
>                 uml_dir++;
>         }
>         strlcat(dir, uml_dir, sizeof(dir));

An (unrelated) side note: are we going to get rid of strlcat() as well
(after strlcpy() is gone)?

..

>         if (*umid == '\0') {
> -               strscpy(tmp, uml_dir, sizeof(tmp));
> +               strscpy(tmp, uml_dir);
>                 strlcat(tmp, "XXXXXX", sizeof(tmp));

This code is interesting... (Esp. taking into account making a
temporary folder out of this...)

-- 
With Best Regards,
Andy Shevchenko