On Wed, May 11, 2016 at 06:12:46PM +0200, Radim Krčmář wrote:
> Signed-off-by: Radim Krčmář <rkrcmar@xxxxxxxxxx>
> ---
> v4: new
>
> lib/string.c | 17 ++++++++++-------
> lib/string.h | 1 +
> 2 files changed, 11 insertions(+), 7 deletions(-)
Reviewed-by: Andrew Jones <drjones@xxxxxxxxxx>
>
> diff --git a/lib/string.c b/lib/string.c
> index e7bcfe945fcf..ee93e25e9821 100644
> --- a/lib/string.c
> +++ b/lib/string.c
> @@ -26,15 +26,18 @@ char *strcpy(char *dest, const char *src)
> return strcat(dest, src);
> }
>
> +int strncmp(const char *a, const char *b, size_t n)
> +{
> + for (; n--; ++a, ++b)
> + if (*a != *b || *a == '\0')
> + return *a - *b;
> +
> + return 0;
> +}
> +
> int strcmp(const char *a, const char *b)
> {
> - while (*a == *b) {
> - if (*a == '\0') {
> - break;
> - }
> - ++a, ++b;
> - }
> - return *a - *b;
> + return strncmp(a, b, SIZE_MAX);
> }
>
> char *strchr(const char *s, int c)
> diff --git a/lib/string.h b/lib/string.h
> index 4e24f54d9e23..2391013ad2b1 100644
> --- a/lib/string.h
> +++ b/lib/string.h
> @@ -5,6 +5,7 @@ extern unsigned long strlen(const char *buf);
> extern char *strcat(char *dest, const char *src);
> extern char *strcpy(char *dest, const char *src);
> extern int strcmp(const char *a, const char *b);
> +extern int strncmp(const char *a, const char *b, size_t n);
> extern char *strchr(const char *s, int c);
> extern char *strstr(const char *haystack, const char *needle);
> extern void *memset(void *s, int c, size_t n);
> --
> 2.8.2
>
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