Function rt_strncpy

src/klibc/kstring.c:361–388

 */
#ifndef RT_KLIBC_USING_USER_STRNCPY
char *rt_strncpy(char *dst, const char *src, rt_size_t n)
{
#ifdef RT_KLIBC_USING_LIBC_STRNCPY
    return strncpy(dst, src, n);
#else
    if (n != 0)
    {
        char *d = dst;
        const char *s = src;

        do
        {
            if ((*d++ = *s++) == 0)
            {
                /* NUL pad the remaining n-1 bytes */
                while (--n != 0)
                {
                    *d++ = 0;
                }

                break;
            }
        } while (--n != 0);
    }

    return (dst);
#endif /* RT_KLIBC_USING_LIBC_STRNCPY */
}
#endif /* RT_KLIBC_USING_USER_STRNCPY */
RTM_EXPORT(rt_strncpy);