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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [librpc/] [include/] [rpcsvc/] [ypxfrd.x] - Blame information for rev 547

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/*
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 * Copyright (c) 1995, 1996
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 *      Bill Paul .  All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. All advertising materials mentioning features or use of this software
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 *    must display the following acknowledgement:
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 *      This product includes software developed by Bill Paul.
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 * 4. Neither the name of the author nor the names of any co-contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL Bill Paul OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 *
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 * $FreeBSD: src/include/rpcsvc/ypxfrd.x,v 1.7 1999/08/27 23:45:13 peter Exp $
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 */
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/*
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 * This protocol definition file describes a file transfer
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 * system used to very quickly move NIS maps from one host to
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 * another. This is similar to what Sun does with their ypxfrd
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 * protocol, but it must be stressed that this protocol is _NOT_
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 * compatible with Sun's. There are a couple of reasons for this:
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 *
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 * 1) Sun's protocol is proprietary. The protocol definition is
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 *    not freely available in any of the SunRPC source distributions,
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 *    even though the NIS v2 protocol is.
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 *
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 * 2) The idea here is to transfer entire raw files rather than
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 *    sending just the records. Sun uses ndbm for its NIS map files,
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 *    while FreeBSD uses Berkeley DB. Both are hash databases, but the
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 *    formats are incompatible, making it impossible for them to
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 *    use each others' files. Even if FreeBSD adopted ndbm for its
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 *    database format, FreeBSD/i386 is a little-endian OS and
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 *    SunOS/SPARC is big-endian; ndbm is byte-order sensitive and
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 *    not very smart about it, which means an attempt to read a
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 *    database on a little-endian box that was created on a big-endian
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 *    box (or vice-versa) can cause the ndbm code to eat itself.
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 *    Luckily, Berkeley DB is able to deal with this situation in
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 *    a more graceful manner.
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 *
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 * While the protocol is incompatible, the idea is the same: we just open
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 * up a TCP pipe to the client and transfer the raw map database
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 * from the master server to the slave. This is many times faster than
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 * the standard yppush/ypxfr transfer method since it saves us from
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 * having to recreate the map databases via the DB library each time.
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 * For example: creating a passwd database with 30,000 entries with yp_mkdb
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 * can take a couple of minutes, but to just copy the file takes only a few
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 * seconds.
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 */
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#ifndef RPC_HDR
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%#ifndef lint
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%static const char rcsid[] =
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%  "$FreeBSD: src/include/rpcsvc/ypxfrd.x,v 1.7 1999/08/27 23:45:13 peter Exp $";
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%#endif /* not lint */
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#endif
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/* XXX cribbed from yp.x */
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const _YPMAXRECORD = 1024;
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const _YPMAXDOMAIN = 64;
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const _YPMAXMAP = 64;
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const _YPMAXPEER = 64;
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/* Suggested default -- not necesarrily the one used. */
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const YPXFRBLOCK = 32767;
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/*
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 * Possible return codes from the remote server.
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 */
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enum xfrstat {
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        XFR_REQUEST_OK  = 1,    /* Transfer request granted */
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        XFR_DENIED      = 2,    /* Transfer request denied */
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        XFR_NOFILE      = 3,    /* Requested map file doesn't exist */
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        XFR_ACCESS      = 4,    /* File exists, but I couldn't access it */
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        XFR_BADDB       = 5,    /* File is not a hash database */
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        XFR_READ_OK     = 6,    /* Block read successfully */
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        XFR_READ_ERR    = 7,    /* Read error during transfer */
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        XFR_DONE        = 8,    /* Transfer completed */
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        XFR_DB_ENDIAN_MISMATCH  = 9,    /* Database byte order mismatch */
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        XFR_DB_TYPE_MISMATCH    = 10    /* Database type mismatch */
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};
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/*
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 * Database type specifications. The client can use this to ask
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 * the server for a particular type of database or just take whatever
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 * the server has to offer.
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 */
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enum xfr_db_type {
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        XFR_DB_ASCII            = 1,    /* Flat ASCII text */
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        XFR_DB_BSD_HASH         = 2,    /* Berkeley DB, hash method */
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        XFR_DB_BSD_BTREE        = 3,    /* Berkeley DB, btree method */
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        XFR_DB_BSD_RECNO        = 4,    /* Berkeley DB, recno method */
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        XFR_DB_BSD_MPOOL        = 5,    /* Berkeley DB, mpool method */
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        XFR_DB_BSD_NDBM         = 6,    /* Berkeley DB, hash, ndbm compat */
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        XFR_DB_GNU_GDBM         = 7,    /* GNU GDBM */
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        XFR_DB_DBM              = 8,    /* Old, deprecated dbm format */
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        XFR_DB_NDBM             = 9,    /* ndbm format (used by Sun's NISv2) */
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        XFR_DB_OPAQUE           = 10,   /* Mystery format -- just pass along */
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        XFR_DB_ANY              = 11,   /* I'll take any format you've got */
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        XFR_DB_UNKNOWN          = 12    /* Unknown format */
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};
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/*
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 * Machine byte order specification. This allows the client to check
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 * that it's copying a map database from a machine of similar byte sex.
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 * This is necessary for handling database libraries that are fatally
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 * byte order sensitive.
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 *
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 * The XFR_ENDIAN_ANY type is for use with the Berkeley DB database
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 * formats; Berkeley DB is smart enough to make up for byte order
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 * differences, so byte sex isn't important.
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 */
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enum xfr_byte_order {
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        XFR_ENDIAN_BIG          = 1,    /* We want big endian */
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        XFR_ENDIAN_LITTLE       = 2,    /* We want little endian */
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        XFR_ENDIAN_ANY          = 3     /* We'll take whatever you got */
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};
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typedef string xfrdomain<_YPMAXDOMAIN>;
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typedef string xfrmap<_YPMAXMAP>;
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typedef string xfrmap_filename<_YPMAXMAP>; /* actual name of map file */
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/*
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 * Ask the remote ypxfrd for a map using this structure.
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 * Note: we supply both a map name and a map file name. These are not
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 * the same thing. In the case of ndbm, maps are stored in two files:
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 * map.bykey.pag and may.bykey.dir. We may also have to deal with
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 * file extensions (on the off chance that the remote server is supporting
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 * multiple DB formats). To handle this, we tell the remote server both
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 * what map we want and, in the case of ndbm, whether we want the .dir
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 * or the .pag part. This name should not be a fully qualified path:
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 * it's up to the remote server to decide which directories to look in.
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 */
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struct ypxfr_mapname {
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        xfrmap xfrmap;
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        xfrdomain xfrdomain;
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        xfrmap_filename xfrmap_filename;
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        xfr_db_type xfr_db_type;
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        xfr_byte_order xfr_byte_order;
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};
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/* Read response using this structure. */
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union xfr switch (bool ok) {
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case TRUE:
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        opaque xfrblock_buf<>;
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case FALSE:
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        xfrstat xfrstat;
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};
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program YPXFRD_FREEBSD_PROG {
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        version YPXFRD_FREEBSD_VERS {
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                union xfr
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                YPXFRD_GETMAP(ypxfr_mapname) = 1;
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        } = 1;
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} = 600100069;  /* 100069 + 60000000 -- 100069 is the Sun ypxfrd prog number */

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