HelenOS sources

memcpy_from_uspace   53 kernel/generic/include/syscall/copy.h extern uintptr_t memcpy_from_uspace(void *dst, uspace_addr_t uspace_src, size_t size);
memcpy_from_uspace   92 kernel/generic/src/syscall/copy.c 	rc = !memcpy_from_uspace(dst, uspace_src, size) ? EPERM : EOK;