size_t LOS_ArchCopyToUser(void *dst, const void *src, size_t len)
从内核空间拷贝到用户空间
INT32 LOS_UserMemClear(unsigned char *buf, UINT32 len)
清除用户空间数据
size_t LOS_ArchCopyFromUser(void *dst, const void *src, size_t len)
INT32 LOS_CopyToKernel(VOID *dest, UINT32 max, const VOID *src, UINT32 count)
将用户空间的数据拷贝到内核空间
INT32 LOS_CopyFromKernel(VOID *dest, UINT32 max, const VOID *src, UINT32 count)
将内核数据拷贝到用户空间