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 * clnt.h - Client side remote procedure call interface.
 *
 * Copyright (c) 2010, Oracle America, Inc.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * 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.
 *     * Neither the name of the "Oracle America, Inc." nor the names of its
 *       contributors may be used to endorse or promote products derived
 *       from this software without specific prior written permission.
 *
 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 THE
 *   COPYRIGHT HOLDER 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 _RPC_CLNT_H
#define _RPC_CLNT_H	1

#include <features.h>
#include <sys/types.h>
#include <rpc/types.h>
#include <rpc/auth.h>
#include <sys/un.h>

__BEGIN_DECLS

/*
 * Rpc calls return an enum clnt_stat.  This should be looked at more,
 * since each implementation is required to live with this (implementation
 * independent) list of errors.
 */
enum clnt_stat {
	RPC_SUCCESS=0,			/* call succeeded */
	/*
	 * local errors
	 */
	RPC_CANTENCODEARGS=1,		/* can't encode arguments */
	RPC_CANTDECODERES=2,		/* can't decode results */
	RPC_CANTSEND=3,			/* failure in sending call */
	RPC_CANTRECV=4,			/* failure in receiving result */
	RPC_TIMEDOUT=5,			/* call timed out */
	/*
	 * remote errors
	 */
	RPC_VERSMISMATCH=6,		/* rpc versions not compatible */
	RPC_AUTHERROR=7,		/* authentication error */
	RPC_PROGUNAVAIL=8,		/* program not available */
	RPC_PROGVERSMISMATCH=9,		/* program version mismatched */
	RPC_PROCUNAVAIL=10,		/* procedure unavailable */
	RPC_CANTDECODEARGS=11,		/* decode arguments error */
	RPC_SYSTEMERROR=12,		/* generic "other problem" */
	RPC_NOBROADCAST = 21,		/* Broadcasting not supported */
	/*
	 * callrpc & clnt_create errors
	 */
	RPC_UNKNOWNHOST=13,		/* unknown host name */
	RPC_UNKNOWNPROTO=17,		/* unknown protocol */
	RPC_UNKNOWNADDR = 19,		/* Remote address unknown */

	/*
	 * rpcbind errors
	 */
	RPC_RPCBFAILURE=14,		/* portmapper failed in its call */
#define RPC_PMAPFAILURE RPC_RPCBFAILURE
	RPC_PROGNOTREGISTERED=15,	/* remote program is not registered */
	RPC_N2AXLATEFAILURE = 22,	/* Name to addr translation failed */
	/*
	 * unspecified error
	 */
	RPC_FAILED=16,
	RPC_INTR=18,
	RPC_TLIERROR=20,
	RPC_UDERROR=23,
	/*
	 * asynchronous errors
	 */
	RPC_INPROGRESS = 24,
	RPC_STALERACHANDLE = 25
};


/*
 * Error info.
 */
struct rpc_err {
  enum clnt_stat re_status;
  union {
    int RE_errno;		/* related system error */
    enum auth_stat RE_why;	/* why the auth error occurred */
    struct {
      u_long low;		/* lowest verion supported */
      u_long high;		/* highest verion supported */
    } RE_vers;
    struct {			/* maybe meaningful if RPC_FAILED */
      long s1;
      long s2;
    } RE_lb;			/* life boot & debugging only */
  } ru;
#define	re_errno	ru.RE_errno
#define	re_why		ru.RE_why
#define	re_vers		ru.RE_vers
#define	re_lb		ru.RE_lb
};


/*
 * Client rpc handl