freebsd-src/usr.sbin/ypserv/yp_svc_udp.c
Bill Paul d0230d0442 ypserv has intimate knowledge of the server transport handle which is
needed to make the asynchronous DNS lookup mechanism work. (It needs to
be able to get/set the transaction ID in the trasport handle so it can
deliver a delayed UDP response when a reply is received from a DNS
server.) With TI-TPC, the transport handle has changed slightly (what
used to be an int is now a size_t) so we need to account for this.
2001-03-21 23:47:18 +00:00

77 lines
2.5 KiB
C

/*
* Copyright (c) 1996
* Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Bill Paul.
* 4. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
static const char rcsid[] =
"$FreeBSD$";
#endif /* not lint */
#include <rpc/rpc.h>
#include <rpc/svc_dg.h>
#include "yp_extern.h"
#define su_data(xprt) ((struct svc_dg_data *)(xprt->xp_p2))
/*
* We need to be able to manually set the transaction ID in the
* UDP transport handle, but the standard library offers us no way
* to do that. Hence we need this garbage.
*/
unsigned long
svcudp_get_xid(xprt)
SVCXPRT *xprt;
{
struct svc_dg_data *su;
if (xprt == NULL)
return(0);
su = su_data(xprt);
return(su->su_xid);
}
unsigned long
svcudp_set_xid(xprt, xid)
SVCXPRT *xprt;
unsigned long xid;
{
struct svc_dg_data *su;
unsigned long old_xid;
if (xprt == NULL)
return(0);
su = su_data(xprt);
old_xid = su->su_xid;
su->su_xid = xid;
return(old_xid);
}