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 33 #ifndef lint 34 static const char rcsid[] = 35 "$FreeBSD$"; 36 #endif /* not lint */ 37 38 #include <rpc/rpc.h> 39 #include "yp_extern.h" 40 41 /* 42 * XXX Must not diverge from what's in src/lib/libc/rpc/svc_udp.c 43 */ 44 45 /* 46 * kept in xprt->xp_p2 47 */ 48 struct svcudp_data { 49 u_int su_iosz; /* byte size of send.recv buffer */ 50 u_long su_xid; /* transaction id */ 51 XDR su_xdrs; /* XDR handle */ 52 char su_verfbody[MAX_AUTH_BYTES]; /* verifier body */ 53 char * su_cache; /* cached data, NULL if no cache */ 54 }; 55 #define su_data(xprt) ((struct svcudp_data *)(xprt->xp_p2)) 56 57 /* 58 * We need to be able to manually set the transaction ID in the 59 * UDP transport handle, but the standard library offers us no way 60 * to do that. Hence we need this garbage. 61 */ 62 63 unsigned long 64 svcudp_get_xid(xprt) 65 SVCXPRT *xprt; 66 { 67 struct svcudp_data *su; 68 69 if (xprt == NULL) 70 return(0); 71 su = su_data(xprt); 72 return(su->su_xid); 73 } 74 75 unsigned long 76 svcudp_set_xid(xprt, xid) 77 SVCXPRT *xprt; 78 unsigned long xid; 79 { 80 struct svcudp_data *su; 81 unsigned long old_xid; 82 83 if (xprt == NULL) 84 return(0); 85 su = su_data(xprt); 86 old_xid = su->su_xid; 87 su->su_xid = xid; 88 return(old_xid); 89 } 90