On Wed, Dec 20, 2017 at 11:36:44AM +0100, Uwe Kleine-König wrote:
> I implemented this while trying to import mmc-utils into barebox. While
> I didn't finish this import this function might still be useful for
> someone?!
>
> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx>
I find it useful, so:
Applied, thanks
Sascha
> ---
> include/linux/string.h | 3 +++
> lib/string.c | 20 ++++++++++++++++++++
> 2 files changed, 23 insertions(+)
>
> diff --git a/include/linux/string.h b/include/linux/string.h
> index 5df8c50e579a..ed4eeb5519e6 100644
> --- a/include/linux/string.h
> +++ b/include/linux/string.h
> @@ -80,6 +80,9 @@ extern __kernel_size_t strnlen(const char *,__kernel_size_t);
> #ifndef __HAVE_ARCH_STRDUP
> extern char * strdup(const char *);
> #endif
> +#ifndef __HAVE_ARCH_STRNDUP
> +extern char *strndup(const char *, size_t);
> +#endif
> #ifndef __HAVE_ARCH_STRSWAB
> extern char * strswab(const char *);
> #endif
> diff --git a/lib/string.c b/lib/string.c
> index 1d491c9c2fb5..f588933e8191 100644
> --- a/lib/string.c
> +++ b/lib/string.c
> @@ -323,6 +323,26 @@ char * strdup(const char *s)
> #endif
> EXPORT_SYMBOL(strdup);
>
> +#ifndef __HAVE_ARCH_STRNDUP
> +char *strndup(const char *s, size_t n)
> +{
> + char *new;
> + size_t len = strnlen(s, n);
> +
> + if ((s == NULL) ||
> + ((new = malloc(len + 1)) == NULL)) {
> + return NULL;
> + }
> +
> + memcpy(new, s, len);
> + new[len] = '\0';
> +
> + return new;
> +}
> +
> +#endif
> +EXPORT_SYMBOL(strndup);
> +
> #ifndef __HAVE_ARCH_STRSPN
> /**
> * strspn - Calculate the length of the initial substring of @s which only
> --
> 2.11.0
>
>
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