Function lwp_get_from_user

components/lwp/lwp_user_mm.c:675–701

}

size_t lwp_get_from_user(void *dst, void *src, size_t size)
{
    struct rt_lwp *lwp = RT_NULL;

    /* check src */

    if (src < (void *)USER_VADDR_START)
    {
        return 0;
    }
    if (src >= (void *)USER_VADDR_TOP)
    {
        return 0;
    }
    if ((void *)((char *)src + size) > (void *)USER_VADDR_TOP)
    {
        return 0;
    }

    lwp = lwp_self();
    if (!lwp)
    {
        return 0;
    }

    return lwp_data_get(lwp, dst, src, size);
}

size_t lwp_put_to_user(void *dst, void *src, size_t size)
{