The process writes whatever data it can until the end of the buffer, and the remaining data is copied to start overwriting the previous log entry.
该进程写入数据，一直到达缓冲区的末尾，然后将剩余的数据复制到缓冲区的开始位置，覆盖以前的日志条目。
Beginning in 2004, users should start avoiding any operating system that fails to provide at least some automatic protection against buffer overflows.
从2004年开始，用户应该开始避免使用这样的操作系统，即它们至少没有对缓冲区溢出提供某种自动保护机制。
You first must create the buffer, fill it, then rewind the position to the beginning so you can read from the start.
必须首先创建一个缓冲区，先填充它，然后将位置倒回起始点，这样才能从头读。
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