On Wed, Aug 23, 2023 at 12:23:08AM +0000, Justin Stitt wrote: > `strncpy` is deprecated for use on NUL-terminated destination strings [1]. > > A suitable replacement is `strscpy` [2] due to the fact that it > guarantees NUL-termination on its destination buffer argument which is > _not_ the case for `strncpy`! > > There is likely no bug happening in this case since HL_STR_MAX is > strictly larger than all source strings. Nonetheless, prefer a safer and > more robust interface. > > It should also be noted that `strscpy` will not pad like `strncpy`. If > this NUL-padding behavior is _required_ we should use `strscpy_pad` > instead of `strscpy`. > > Link: www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings[1] > Link: https://manpages.debian.org/testing/linux-manual-4.8/strscpy.9.en.html [2] > Link: https://github.com/KSPP/linux/issues/90 > Cc: linux-hardening@xxxxxxxxxxxxxxx > Signed-off-by: Justin Stitt <justinstitt@xxxxxxxxxx> Reviewed-by: Stanislaw Gruszka <stanislaw.gruszka@xxxxxxxxxxxxxxx>
