ypxfrd.x revision 16119
116119Swpaul/* 216119Swpaul * Copyright (c) 1995, 1996 316119Swpaul * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved. 416119Swpaul * 516119Swpaul * Redistribution and use in source and binary forms, with or without 616119Swpaul * modification, are permitted provided that the following conditions 716119Swpaul * are met: 816119Swpaul * 1. Redistributions of source code must retain the above copyright 916119Swpaul * notice, this list of conditions and the following disclaimer. 1016119Swpaul * 2. Redistributions in binary form must reproduce the above copyright 1116119Swpaul * notice, this list of conditions and the following disclaimer in the 1216119Swpaul * documentation and/or other materials provided with the distribution. 1316119Swpaul * 3. All advertising materials mentioning features or use of this software 1416119Swpaul * must display the following acknowledgement: 1516119Swpaul * This product includes software developed by Bill Paul. 1616119Swpaul * 4. Neither the name of the author nor the names of any co-contributors 1716119Swpaul * may be used to endorse or promote products derived from this software 1816119Swpaul * without specific prior written permission. 1916119Swpaul * 2016119Swpaul * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 2116119Swpaul * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2216119Swpaul * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2316119Swpaul * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR CONTRIBUTORS BE LIABLE 2416119Swpaul * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2516119Swpaul * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2616119Swpaul * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2716119Swpaul * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2816119Swpaul * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2916119Swpaul * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3016119Swpaul * SUCH DAMAGE. 3116119Swpaul * 3216119Swpaul * $Id: ypxfrd.x,v 1.8 1996/06/03 20:17:04 wpaul Exp $ 3316119Swpaul */ 3416119Swpaul 3516119Swpaul/* 3616119Swpaul * This protocol definition file describes a file transfer 3716119Swpaul * system used to very quickly move NIS maps from one host to 3816119Swpaul * another. This is similar to what Sun does with their ypxfrd 3916119Swpaul * protocol, but it must be stressed that this protocol is _NOT_ 4016119Swpaul * compatible with Sun's. There are a couple of reasons for this: 4116119Swpaul * 4216119Swpaul * 1) Sun's protocol is proprietary. The protocol definition is 4316119Swpaul * not freely available in any of the SunRPC source distributions, 4416119Swpaul * even though the NIS v2 protocol is. 4516119Swpaul * 4616119Swpaul * 2) The idea here is to transfer entire raw files rather than 4716119Swpaul * sending just the records. Sun uses ndbm for its NIS map files, 4816119Swpaul * while FreeBSD uses Berkeley DB. Both are hash databases, but the 4916119Swpaul * formats are incompatible, making it impossible for them to 5016119Swpaul * use each others' files. Even if FreeBSD adopted ndbm for its 5116119Swpaul * database format, FreeBSD/i386 is a little-endian OS and 5216119Swpaul * SunOS/SPARC is big-endian; ndbm is byte-order sensitive and 5316119Swpaul * not very smart about it, which means an attempt to read a 5416119Swpaul * database on a little-endian box that was created on a big-endian 5516119Swpaul * box (or vice-versa) can cause the ndbm code to eat itself. 5616119Swpaul * Luckily, Berkeley DB is able to deal with this situation in 5716119Swpaul * a more graceful manner. 5816119Swpaul * 5916119Swpaul * While the protocol is incompatible, the idea is the same: we just open 6016119Swpaul * up a TCP pipe to the client and transfer the raw map database 6116119Swpaul * from the master server to the slave. This is many times faster than 6216119Swpaul * the standard yppush/ypxfr transfer method since it saves us from 6316119Swpaul * having to recreate the map databases via the DB library each time. 6416119Swpaul * For example: creating a passwd database with 30,000 entries with yp_mkdb 6516119Swpaul * can take a couple of minutes, but to just copy the file takes only a few 6616119Swpaul * seconds. 6716119Swpaul */ 6816119Swpaul 6916119Swpaul#ifndef RPC_HDR 7016119Swpaul%#ifndef lint 7116119Swpaul%static const char rcsid[] = "$Id: ypxfrd.x,v 1.8 1996/06/03 20:17:04 wpaul Exp $"; 7216119Swpaul%#endif /* not lint */ 7316119Swpaul#endif 7416119Swpaul 7516119Swpaul/* XXX cribbed from yp.x */ 7616119Swpaulconst _YPMAXRECORD = 1024; 7716119Swpaulconst _YPMAXDOMAIN = 64; 7816119Swpaulconst _YPMAXMAP = 64; 7916119Swpaulconst _YPMAXPEER = 64; 8016119Swpaul 8116119Swpaul/* Suggested default -- not necesarrily the one used. */ 8216119Swpaulconst YPXFRBLOCK = 32767; 8316119Swpaul 8416119Swpaulenum xfrstat { 8516119Swpaul XFR_REQUEST_OK = 1, /* Transfer request granted */ 8616119Swpaul XFR_DENIED = 2, /* Transfer request denied */ 8716119Swpaul XFR_NOFILE = 3, /* Requested map file doesn't exist */ 8816119Swpaul XFR_ACCESS = 4, /* File exists, but I couldn't access it */ 8916119Swpaul XFR_BADDB = 5, /* File is not a hash database */ 9016119Swpaul XFR_READ_OK = 6, /* Block read successfully */ 9116119Swpaul XFR_READ_ERR = 7, /* Read error during transfer */ 9216119Swpaul XFR_DONE = 8 /* Transfer completed */ 9316119Swpaul}; 9416119Swpaul 9516119Swpaultypedef string xfrdomain<_YPMAXDOMAIN>; 9616119Swpaultypedef string xfrmap<_YPMAXMAP>; 9716119Swpaul 9816119Swpaul/* Ask the remote ypxfrd for a map using this structure */ 9916119Swpaulstruct ypxfr_mapname { 10016119Swpaul xfrmap xfrmap; 10116119Swpaul xfrdomain xfrdomain; 10216119Swpaul}; 10316119Swpaul 10416119Swpaul/* Read response using this structure. */ 10516119Swpaulunion xfr switch (bool ok) { 10616119Swpaulcase TRUE: 10716119Swpaul opaque xfrblock_buf<>; 10816119Swpaulcase FALSE: 10916119Swpaul enum xfrstat xfrstat; 11016119Swpaul}; 11116119Swpaul 11216119Swpaulprogram YPXFRD_FREEBSD_PROG { 11316119Swpaul version YPXFRD_FREEBSD_VERS { 11416119Swpaul union xfr 11516119Swpaul YPXFRD_GETMAP(ypxfr_mapname) = 1; 11616119Swpaul } = 1; 11716119Swpaul} = 600100069; /* 100069 + 60000000 -- 100069 is the Sun ypxfrd prog number */ 118