1 /* 2 * Copyright (c) 1996 3 * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by Bill Paul. 16 * 4. Neither the name of the author nor the names of any co-contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * $FreeBSD: src/usr.sbin/ypserv/yp_svc_udp.c,v 1.5 1999/08/28 01:21:14 peter Exp $ 33 * $DragonFly: src/usr.sbin/ypserv/yp_svc_udp.c,v 1.3 2004/03/31 23:20:22 cpressey Exp $ 34 */ 35 36 #include <rpc/rpc.h> 37 #include "yp_extern.h" 38 39 /* 40 * XXX Must not diverge from what's in src/lib/libc/rpc/svc_udp.c 41 */ 42 43 /* 44 * kept in xprt->xp_p2 45 */ 46 struct svcudp_data { 47 u_int su_iosz; /* byte size of send.recv buffer */ 48 u_long su_xid; /* transaction id */ 49 XDR su_xdrs; /* XDR handle */ 50 char su_verfbody[MAX_AUTH_BYTES]; /* verifier body */ 51 char * su_cache; /* cached data, NULL if no cache */ 52 }; 53 #define su_data(xprt) ((struct svcudp_data *)(xprt->xp_p2)) 54 55 /* 56 * We need to be able to manually set the transaction ID in the 57 * UDP transport handle, but the standard library offers us no way 58 * to do that. Hence we need this garbage. 59 */ 60 61 unsigned long 62 svcudp_get_xid(SVCXPRT *xprt) 63 { 64 struct svcudp_data *su; 65 66 if (xprt == NULL) 67 return(0); 68 su = su_data(xprt); 69 return(su->su_xid); 70 } 71 72 unsigned long 73 svcudp_set_xid(SVCXPRT *xprt, unsigned long xid) 74 { 75 struct svcudp_data *su; 76 unsigned long old_xid; 77 78 if (xprt == NULL) 79 return(0); 80 su = su_data(xprt); 81 old_xid = su->su_xid; 82 su->su_xid = xid; 83 return(old_xid); 84 } 85