/* $NetBSD: svc.h,v 1.17 2000/06/02 22:57:56 fvdl Exp $ */

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/*

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* Copyright (c) 2009, Sun Microsystems, Inc.

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* 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 are met:

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* - Redistributions of source code must retain the above copyright notice,

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* this list of conditions and the following disclaimer.

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* - Redistributions in binary form must reproduce the above copyright notice,

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* this list of conditions and the following disclaimer in the documentation

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* and/or other materials provided with the distribution.

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* - Neither the name of Sun Microsystems, Inc. nor the names of its

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* contributors may be used to endorse or promote products derived

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* from this software without specific prior written permission.

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*

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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

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* AND 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 THE COPYRIGHT HOLDER OR CONTRIBUTORS BE

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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

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* POSSIBILITY OF SUCH DAMAGE.

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*

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* from: @(#)svc.h 1.35 88/12/17 SMI

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* from: @(#)svc.h 1.27 94/04/25 SMI

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* $FreeBSD: src/include/rpc/svc.h,v 1.24 2003/06/15 10:32:01 mbr Exp $

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*/

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/*

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* svc.h, Server-side remote procedure call interface.

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*

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* Copyright (C) 1986-1993 by Sun Microsystems, Inc.

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*/

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#ifndef _TIRPC_SVC_H

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#define _TIRPC_SVC_H

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/*

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* This interface must manage two items concerning remote procedure calling:

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*

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* 1) An arbitrary number of transport connections upon which rpc requests

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* are received. The two most notable transports are TCP and UDP; they are

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* created and registered by routines in svc_tcp.c and svc_udp.c, respectively;

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* they in turn call xprt_register and xprt_unregister.

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*

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* 2) An arbitrary number of locally registered services. Services are

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* described by the following four data: program number, version number,

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* "service dispatch" function, a transport handle, and a boolean that

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* indicates whether or not the exported program should be registered with a

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* local binder service; if true the program's number and version and the

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* port number from the transport handle are registered with the binder.

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* These data are registered with the rpc svc system via svc_register.

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*

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* A service's dispatch function is called whenever an rpc request comes in

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* on a transport. The request's program and version numbers must match

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* those of the registered service. The dispatch function is passed two

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* parameters, struct svc_req * and SVCXPRT *, defined below.

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*/

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/*

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* Service control requests

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*/

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#define SVCGET_VERSQUIET 1

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#define SVCSET_VERSQUIET 2

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#define SVCGET_CONNMAXREC 3

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#define SVCSET_CONNMAXREC 4

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/*

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* Operations for rpc_control().

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*/

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#define RPC_SVC_CONNMAXREC_SET 0 /* set max rec size, enable nonblock */

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#define RPC_SVC_CONNMAXREC_GET 1

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enum xprt_stat {

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XPRT_DIED,

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XPRT_MOREREQS,

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XPRT_IDLE

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};

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/*

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* Server side transport handle

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*/

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typedef struct __rpc_svcxprt {

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int xp_fd;

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#define xp_sock xp_fd

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u_short xp_port; /* associated port number */

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const struct xp_ops {

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/* receive incoming requests */

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bool_t (*xp_recv)(struct __rpc_svcxprt *, struct rpc_msg *);

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/* get transport status */

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enum xprt_stat (*xp_stat)(struct __rpc_svcxprt *);

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/* get arguments */

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bool_t (*xp_getargs)(struct __rpc_svcxprt *, xdrproc_t,

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void *);

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/* send reply */

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bool_t (*xp_reply)(struct __rpc_svcxprt *, struct rpc_msg *);

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/* free mem allocated for args */

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bool_t (*xp_freeargs)(struct __rpc_svcxprt *, xdrproc_t,

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void *);

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/* destroy this struct */

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void (*xp_destroy)(struct __rpc_svcxprt *);

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} *xp_ops;

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int xp_addrlen; /* length of remote address */

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struct sockaddr_in6 xp_raddr; /* remote addr. (backward ABI compat) */

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/* XXX - fvdl stick this here for ABI backward compat reasons */

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const struct xp_ops2 {

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/* catch-all function */

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bool_t (*xp_control)(struct __rpc_svcxprt *, const u_int,

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void *);

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} *xp_ops2;

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char *xp_tp; /* transport provider device name */

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char *xp_netid; /* network token */

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struct netbuf xp_ltaddr; /* local transport address */

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struct netbuf xp_rtaddr; /* remote transport address */

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struct opaque_auth xp_verf; /* raw response verifier */

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void *xp_p1; /* private: for use by svc ops */

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void *xp_p2; /* private: for use by svc ops */

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void *xp_p3; /* private: for use by svc lib */

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int xp_type; /* transport type */

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} SVCXPRT;

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/*

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* Service request

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*/

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struct svc_req {

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/* ORDER: compatibility with legacy RPC */

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u_int32_t rq_prog; /* service program number */

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u_int32_t rq_vers; /* service protocol version */

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u_int32_t rq_proc; /* the desired procedure */

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struct opaque_auth rq_cred; /* raw creds from the wire */

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void *rq_clntcred; /* read only cooked cred */

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SVCXPRT *rq_xprt; /* associated transport */

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/* New with TI-RPC */

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caddr_t rq_clntname; /* read only client name */

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caddr_t rq_svcname; /* read only cooked service cred */

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};

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/*

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* Approved way of getting address of caller

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*/

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#define svc_getrpccaller(x) (&(x)->xp_rtaddr)

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/*

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* Operations defined on an SVCXPRT handle

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*

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* SVCXPRT *xprt;

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* struct rpc_msg *msg;

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* xdrproc_t xargs;

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* void * argsp;

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*/

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#define SVC_RECV(xprt, msg) \

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(*(xprt)->xp_ops->xp_recv)((xprt), (msg))

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#define svc_recv(xprt, msg) \

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(*(xprt)->xp_ops->xp_recv)((xprt), (msg))

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#define SVC_STAT(xprt) \

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(*(xprt)->xp_ops->xp_stat)(xprt)

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#define svc_stat(xprt) \

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(*(xprt)->xp_ops->xp_stat)(xprt)

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#define SVC_GETARGS(xprt, xargs, argsp) \

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(*(xprt)->xp_ops->xp_getargs)((xprt), (xargs), (argsp))

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#define svc_getargs(xprt, xargs, argsp) \

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(*(xprt)->xp_ops->xp_getargs)((xprt), (xargs), (argsp))

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#define SVC_REPLY(xprt, msg) \

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(*(xprt)->xp_ops->xp_reply) ((xprt), (msg))

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#define svc_reply(xprt, msg) \

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(*(xprt)->xp_ops->xp_reply) ((xprt), (msg))

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#define SVC_FREEARGS(xprt, xargs, argsp) \

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(*(xprt)->xp_ops->xp_freeargs)((xprt), (xargs), (argsp))

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#define svc_freeargs(xprt, xargs, argsp) \

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(*(xprt)->xp_ops->xp_freeargs)((xprt), (xargs), (argsp))

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#define SVC_DESTROY(xprt) \

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(*(xprt)->xp_ops->xp_destroy)(xprt)

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#define svc_destroy(xprt) \

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(*(xprt)->xp_ops->xp_destroy)(xprt)

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#define SVC_CONTROL(xprt, rq, in) \

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(*(xprt)->xp_ops2->xp_control)((xprt), (rq), (in))

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/*

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* Service registration

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*

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* svc_reg(xprt, prog, vers, dispatch, nconf)

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* const SVCXPRT *xprt;

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* const rpcprog_t prog;

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* const rpcvers_t vers;

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* const void (*dispatch)();

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* const struct netconfig *nconf;

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*/

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#ifdef __cplusplus

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extern "C" {

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#endif

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extern bool_t svc_reg(SVCXPRT *, const rpcprog_t, const rpcvers_t,

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void (*)(struct svc_req *, SVCXPRT *),

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const struct netconfig *);

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#ifdef __cplusplus

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}

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#endif

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/*

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* Service un-registration

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*

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* svc_unreg(prog, vers)

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* const rpcprog_t prog;

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* const rpcvers_t vers;

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*/

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#ifdef __cplusplus

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extern "C" {

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#endif

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extern void svc_unreg(const rpcprog_t, const rpcvers_t);

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#ifdef __cplusplus

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}

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#endif

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/*

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* Transport registration.

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*

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* xprt_register(xprt)

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* SVCXPRT *xprt;

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*/

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#ifdef __cplusplus

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extern "C" {

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#endif

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extern void xprt_register(SVCXPRT *);

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#ifdef __cplusplus

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}

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#endif

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/*

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* Transport un-register

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*

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* xprt_unregister(xprt)

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* SVCXPRT *xprt;

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*/

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#ifdef __cplusplus

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extern "C" {

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#endif

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extern void xprt_unregister(SVCXPRT *);

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#ifdef __cplusplus

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}

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#endif

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/*

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* When the service routine is called, it must first check to see if it

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* knows about the procedure; if not, it should call svcerr_noproc

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* and return. If so, it should deserialize its arguments via

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* SVC_GETARGS (defined above). If the deserialization does not work,

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* svcerr_decode should be called followed by a return. Successful

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* decoding of the arguments should be followed the execution of the

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* procedure's code and a call to svc_sendreply.

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*

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* Also, if the service refuses to execute the procedure due to too-

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* weak authentication parameters, svcerr_weakauth should be called.

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* Note: do not confuse access-control failure with weak authentication!

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*

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* NB: In pure implementations of rpc, the caller always waits for a reply

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* msg. This message is sent when svc_sendreply is called.

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* Therefore pure service implementations should always call

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* svc_sendreply even if the function logically returns void; use

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* xdr.h - xdr_void for the xdr routine. HOWEVER, tcp based rpc allows

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* for the abuse of pure rpc via batched calling or pipelining. In the

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* case of a batched call, svc_sendreply should NOT be called since

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* this would send a return message, which is what batching tries to avoid.

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* It is the service/protocol writer's responsibility to know which calls are

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* batched and which are not. Warning: responding to batch calls may

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* deadlock the caller and server processes!

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*/

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#ifdef __cplusplus

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extern "C" {

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#endif

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extern bool_t svc_sendreply(SVCXPRT *, xdrproc_t, void *);

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extern void svcerr_decode(SVCXPRT *);

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extern void svcerr_weakauth(SVCXPRT *);

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extern void svcerr_noproc(SVCXPRT *);

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extern void svcerr_progvers(SVCXPRT *, rpcvers_t, rpcvers_t);

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extern void svcerr_auth(SVCXPRT *, enum auth_stat);

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extern void svcerr_noprog(SVCXPRT *);

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extern void svcerr_systemerr(SVCXPRT *);

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extern int rpc_reg(rpcprog_t, rpcvers_t, rpcproc_t,

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char *(*)(char *), xdrproc_t, xdrproc_t,

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char *);

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#ifdef __cplusplus

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}

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#endif

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/*

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* Lowest level dispatching -OR- who owns this process anyway.

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* Somebody has to wait for incoming requests and then call the correct

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* service routine. The routine svc_run does infinite waiting; i.e.,

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* svc_run never returns.

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* Since another (co-existant) package may wish to selectively wait for

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* incoming calls or other events outside of the rpc architecture, the

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* routine svc_getreq is provided. It must be passed readfds, the

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* "in-place" results of a select system call (see select, section 2).

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*/

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/*

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* Global keeper of rpc service descriptors in use

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* dynamic; must be inspected before each call to select

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*/

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extern int svc_maxfd;

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extern fd_set svc_fdset;

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#define svc_fds svc_fdset.fds_bits[0] /* compatibility */

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extern struct pollfd *svc_pollfd;

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extern int svc_max_pollfd;

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/*

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* a small program implemented by the svc_rpc implementation itself;

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* also see clnt.h for protocol numbers.

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*/

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#ifdef __cplusplus

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extern "C" {

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#endif

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extern void rpctest_service(void);

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#ifdef __cplusplus

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}

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#endif

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#ifdef __cplusplus

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extern "C" {

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#endif

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extern void svc_getreq(int);

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extern void svc_getreqset(fd_set *);

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extern void svc_getreq_common(int);

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struct pollfd;

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extern void svc_getreq_poll(struct pollfd *, int);

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extern void svc_run(void);

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extern void svc_exit(void);

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#ifdef __cplusplus

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}

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#endif

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/*

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* Socket to use on svcxxx_create call to get default socket

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*/

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#define RPC_ANYSOCK -1

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#define RPC_ANYFD RPC_ANYSOCK

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/*

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* These are the existing service side transport implementations

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*/

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#ifdef __cplusplus

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extern "C" {

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#endif

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/*

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* Transport independent svc_create routine.

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*/

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extern int svc_create(void (*)(struct svc_req *, SVCXPRT *),

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const rpcprog_t, const rpcvers_t, const char *);

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/*

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* void (*dispatch)(); -- dispatch routine

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* const rpcprog_t prognum; -- program number

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* const rpcvers_t versnum; -- version number

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* const char *nettype; -- network type

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*/

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/*

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* Generic server creation routine. It takes a netconfig structure

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* instead of a nettype.

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*/

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extern SVCXPRT *svc_tp_create(void (*)(struct svc_req *, SVCXPRT *),

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const rpcprog_t, const rpcvers_t,

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const struct netconfig *);

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/*

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* void (*dispatch)(); -- dispatch routine

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* const rpcprog_t prognum; -- program number

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* const rpcvers_t versnum; -- version number

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* const struct netconfig *nconf; -- netconfig structure

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*/

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/*

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* Generic TLI create routine

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*/

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extern SVCXPRT *svc_tli_create(const int, const struct netconfig *,

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const struct t_bind *, const u_int,

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const u_int);

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/*

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* const int fd; -- connection end point

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* const struct netconfig *nconf; -- netconfig structure for network

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* const struct t_bind *bindaddr; -- local bind address

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* const u_int sendsz; -- max sendsize

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* const u_int recvsz; -- max recvsize

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*/

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/*

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* Connectionless and connectionful create routines

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*/

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extern SVCXPRT *svc_vc_create(const int, const u_int, const u_int);

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/*

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* const int fd; -- open connection end point

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* const u_int sendsize; -- max send size

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* const u_int recvsize; -- max recv size

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*/

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/*

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* Added for compatibility to old rpc 4.0. Obsoleted by svc_vc_create().

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*/

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extern SVCXPRT *svcunix_create(int, u_int, u_int, char *);

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extern SVCXPRT *svc_dg_create(const int, const u_int, const u_int);

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/*

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* const int fd; -- open connection

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* const u_int sendsize; -- max send size

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* const u_int recvsize; -- max recv size

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*/

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/*

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* the routine takes any *open* connection

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* descriptor as its first input and is used for open connections.

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*/

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extern SVCXPRT *svc_fd_create(const int, const u_int, const u_int);

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/*

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* const int fd; -- open connection end point

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* const u_int sendsize; -- max send size

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* const u_int recvsize; -- max recv size

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*/

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/*

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* Added for compatibility to old rpc 4.0. Obsoleted by svc_fd_create().

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*/

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extern SVCXPRT *svcunixfd_create(int, u_int, u_int);

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/*

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* Memory based rpc (for speed check and testing)

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*/

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extern SVCXPRT *svc_raw_create(void);

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/*

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* svc_dg_enable_cache() enables the cache on dg transports.

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*/

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int svc_dg_enablecache(SVCXPRT *, const u_int);

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int __rpc_get_local_uid(SVCXPRT *_transp, uid_t *_uid);

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#ifdef __cplusplus

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}

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#endif

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/* for backward compatibility */

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#include <rpc/svc_soc.h>

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#endif /* !_TIRPC_SVC_H */

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