After the transfer, you use the data in that structure to copy the string itself into your buffer in the local store using another DMA transfer, and wait for it to complete.
传输之后，使用那个结构中的数据来将字符串自身复制到本地存储的缓存区内，方法是借助另一个dma传输并等待它完成。
When writing to buffers, C programmers must take care not to store more data in the buffer than it can hold.
在写入缓冲区时，C 程式员必须注意储存在缓冲区中的资料不能超过它所能容纳的量。
A buffer overflow, or buffer overrun, occurs when a process attempts to store data beyond the boundaries of a fixed-length buffer.
当进程尝试将数据储存到固定长度的缓冲区的范围之外时，就会出现缓冲区溢出。
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