函数逻辑报告

函数名称：lay_file_read_start_pos - find the first available byte to read*@read_pos: file read position*@buf: relay channel buffer* If the @read_pos is in the middle of padding, return the* position of the first actually available byte, otherwise

函数原型：static size_t relay_file_read_start_pos(size_t read_pos, struct rchan_buf *buf)

返回类型：size_t

参数：