On Tue, Nov 01, 2022 at 07:43:10AM +0100, Ahmad Fatoum wrote:
> mempcpy(3) is a GNU libc extension that like stpcpy returns not the
> start of the destination buffer, but the first byte after its end.
>
> Provide it as it is useful when concatenating buffers or known-size
> strings.
>
> Signed-off-by: Ahmad Fatoum <a.fatoum@xxxxxxxxxxxxxx>
> ---
> v1 -> v2:
> - split off function from series using it. Other series needs
> commits reordered.
Applied, thanks
Sascha
> ---
> include/string.h | 1 +
> lib/string.c | 5 +++++
> 2 files changed, 6 insertions(+)
>
> diff --git a/include/string.h b/include/string.h
> index 2cc727fd1d7a..596440ca8164 100644
> --- a/include/string.h
> +++ b/include/string.h
> @@ -4,6 +4,7 @@
>
> #include <linux/string.h>
>
> +void *mempcpy(void *dest, const void *src, size_t count);
> int strtobool(const char *str, int *val);
> char *strsep_unescaped(char **, const char *);
> char *stpcpy(char *dest, const char *src);
> diff --git a/lib/string.c b/lib/string.c
> index fd4d7da10a7c..edd36da4d4f2 100644
> --- a/lib/string.c
> +++ b/lib/string.c
> @@ -603,6 +603,11 @@ void *__memcpy(void * dest, const void *src, size_t count)
> __alias(__default_memcpy);
> #endif
>
> +void *mempcpy(void *dest, const void *src, size_t count)
> +{
> + return memcpy(dest, src, count) + count;
> +}
> +EXPORT_SYMBOL(mempcpy);
>
> #ifndef __HAVE_ARCH_MEMMOVE
> /**
> --
> 2.30.2
>
>
>
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