1 /* This file is part of the Project Athena Zephyr Notification System.
2  * It contains source for ZReceivePacket function.
3  *
4  *	Created by:	Robert French
5  *
6  *	Copyright (c) 1987,1988 by the Massachusetts Institute of Technology.
7  *	For copying and distribution information, see the file
8  *	"mit-copyright.h".
9  */
10 
11 #include "internal.h"
12 
ZReceivePacket(buffer,ret_len,from)13 Code_t ZReceivePacket(buffer, ret_len, from)
14     ZPacket_t buffer;
15     int *ret_len;
16     struct sockaddr_in *from;
17 {
18     Code_t retval;
19     struct _Z_InputQ *nextq;
20 
21     if ((retval = Z_WaitForComplete()) != ZERR_NONE)
22 	return (retval);
23 
24     nextq = Z_GetFirstComplete();
25 
26     *ret_len = nextq->packet_len;
27     if (*ret_len > Z_MAXPKTLEN)
28 	return (ZERR_PKTLEN);
29 
30     (void) memcpy(buffer, nextq->packet, *ret_len);
31 
32     if (from)
33 	*from = nextq->from;
34 
35     Z_RemQueue(nextq);
36 
37     return (ZERR_NONE);
38 }
39