15 cirbuf_init(struct cirbuf *cbuf, char *buf, unsigned int start, unsigned int maxlen)  in cirbuf_init()  argument
17 	if (!cbuf || !buf)  in cirbuf_init()
23 	cbuf->buf = buf;  in cirbuf_init()
41 		memcpy(cbuf->buf + cbuf->start - n + e, c, n);  in cirbuf_add_buf_head()
48 		memcpy(cbuf->buf, c  + n - (cbuf->start + e) , cbuf->start + e);  in cirbuf_add_buf_head()
49 		memcpy(cbuf->buf + cbuf->maxlen - n + (cbuf->start + e), c,  in cirbuf_add_buf_head()
72 		memcpy(cbuf->buf + cbuf->end + !e, c, n);  in cirbuf_add_buf_tail()
79 		memcpy(cbuf->buf + cbuf->end + !e, c, cbuf->maxlen -  in cirbuf_add_buf_tail()
81 		memcpy(cbuf->buf, c + cbuf->maxlen - cbuf->end - 1 + e,  in cirbuf_add_buf_tail()
99 	cbuf->buf[cbuf->start] = c;  in __cirbuf_add_head()
128 	cbuf->buf[cbuf->end] = c;  in __cirbuf_add_tail()
153 	char tmp = cbuf->buf[cbuf->start];  in __cirbuf_shift_left()
156 		cbuf->buf[(cbuf->start+i)%cbuf->maxlen] =  in __cirbuf_shift_left()
157 			cbuf->buf[(cbuf->start+i+1)%cbuf->maxlen];  in __cirbuf_shift_left()
159 	cbuf->buf[(cbuf->start-1+cbuf->maxlen)%cbuf->maxlen] = tmp;  in __cirbuf_shift_left()
170 	char tmp = cbuf->buf[cbuf->end];  in __cirbuf_shift_right()
173 		cbuf->buf[(cbuf->end+cbuf->maxlen-i)%cbuf->maxlen] =  in __cirbuf_shift_right()
174 			cbuf->buf[(cbuf->end+cbuf->maxlen-i-1)%cbuf->maxlen];  in __cirbuf_shift_right()
176 	cbuf->buf[(cbuf->end+1)%cbuf->maxlen] = tmp;  in __cirbuf_shift_right()
338 		memcpy(c, cbuf->buf + cbuf->start , n);  in cirbuf_get_buf_head()
344 			memcpy(c, cbuf->buf + cbuf->start , n);  in cirbuf_get_buf_head()
351 			memcpy(c, cbuf->buf + cbuf->start , cbuf->maxlen - cbuf->start);  in cirbuf_get_buf_head()
352 			memcpy(c + cbuf->maxlen - cbuf->start, cbuf->buf,  in cirbuf_get_buf_head()
376 		memcpy(c, cbuf->buf + cbuf->end - n + 1, n);  in cirbuf_get_buf_tail()
382 			memcpy(c, cbuf->buf + cbuf->end - n + 1, n);  in cirbuf_get_buf_tail()
390 					       cbuf->buf, cbuf->end + 1);  in cirbuf_get_buf_tail()
391 			memcpy(c, cbuf->buf + cbuf->maxlen - n + cbuf->end +1,  in cirbuf_get_buf_tail()
403 	return cbuf->buf[cbuf->start];  in cirbuf_get_head()
411 	return cbuf->buf[cbuf->end];  in cirbuf_get_tail()