crypto: qat - refactor deprecated strncpy
`strncpy` is deprecated for use on NUL-terminated destination strings [1]. We should prefer more robust and less ambiguous string interfaces. `buf` is expected to be NUL-terminated for its eventual use in `kstrtoul()` and NUL-padding is not required. Due to the above, a suitable replacement is `strscpy` [2] due to the fact that it guarantees NUL-termination on the destination buffer. Link: https://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@vger.kernel.org Signed-off-by: Justin Stitt <justinstitt@google.com> Acked-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com> Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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@ -200,7 +200,7 @@ static int qat_uclo_parse_num(char *str, unsigned int *num)
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unsigned long ae = 0;
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int i;
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strncpy(buf, str, 15);
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strscpy(buf, str, sizeof(buf));
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for (i = 0; i < 16; i++) {
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if (!isdigit(buf[i])) {
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buf[i] = '\0';
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