1 /*-
2 * SPDX-License-Identifier: BSD-4-Clause
3 *
4 * Copyright (c) 1996
5 * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed by Bill Paul.
18 * 4. Neither the name of the author nor the names of any co-contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35 #include <sys/cdefs.h>
36 #include <rpc/rpc.h>
37 #include <rpc/svc_dg.h>
38 #include "yp_extern.h"
39
40 #define su_data(xprt) ((struct svc_dg_data *)((xprt)->xp_p2))
41
42 /*
43 * We need to be able to manually set the transaction ID in the
44 * UDP transport handle, but the standard library offers us no way
45 * to do that. Hence we need this garbage.
46 */
47
48 unsigned long
svcudp_get_xid(SVCXPRT * xprt)49 svcudp_get_xid(SVCXPRT *xprt)
50 {
51 struct svc_dg_data *su;
52
53 if (xprt == NULL)
54 return(0);
55 su = su_data(xprt);
56 return(su->su_xid);
57 }
58
59 unsigned long
svcudp_set_xid(SVCXPRT * xprt,unsigned long xid)60 svcudp_set_xid(SVCXPRT *xprt, unsigned long xid)
61 {
62 struct svc_dg_data *su;
63 unsigned long old_xid;
64
65 if (xprt == NULL)
66 return(0);
67 su = su_data(xprt);
68 old_xid = su->su_xid;
69 su->su_xid = xid;
70 return(old_xid);
71 }
72