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419 lines
12 KiB
C
419 lines
12 KiB
C
8 years ago
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/*
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* clnt.h - Client side remote procedure call interface.
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*
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* Copyright (c) 2010, Oracle America, Inc.
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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
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* met:
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*
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* * 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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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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* * Neither the name of the "Oracle America, 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
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _RPC_CLNT_H
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#define _RPC_CLNT_H 1
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#include <features.h>
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#include <sys/types.h>
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#include <rpc/types.h>
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#include <rpc/auth.h>
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#include <sys/un.h>
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__BEGIN_DECLS
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/*
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* Rpc calls return an enum clnt_stat. This should be looked at more,
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* since each implementation is required to live with this (implementation
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* independent) list of errors.
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*/
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enum clnt_stat {
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RPC_SUCCESS=0, /* call succeeded */
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/*
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* local errors
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*/
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RPC_CANTENCODEARGS=1, /* can't encode arguments */
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RPC_CANTDECODERES=2, /* can't decode results */
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RPC_CANTSEND=3, /* failure in sending call */
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RPC_CANTRECV=4, /* failure in receiving result */
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RPC_TIMEDOUT=5, /* call timed out */
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/*
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* remote errors
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*/
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RPC_VERSMISMATCH=6, /* rpc versions not compatible */
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RPC_AUTHERROR=7, /* authentication error */
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RPC_PROGUNAVAIL=8, /* program not available */
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RPC_PROGVERSMISMATCH=9, /* program version mismatched */
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RPC_PROCUNAVAIL=10, /* procedure unavailable */
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RPC_CANTDECODEARGS=11, /* decode arguments error */
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RPC_SYSTEMERROR=12, /* generic "other problem" */
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RPC_NOBROADCAST = 21, /* Broadcasting not supported */
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/*
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* callrpc & clnt_create errors
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*/
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RPC_UNKNOWNHOST=13, /* unknown host name */
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RPC_UNKNOWNPROTO=17, /* unknown protocol */
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RPC_UNKNOWNADDR = 19, /* Remote address unknown */
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/*
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* rpcbind errors
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*/
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RPC_RPCBFAILURE=14, /* portmapper failed in its call */
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#define RPC_PMAPFAILURE RPC_RPCBFAILURE
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RPC_PROGNOTREGISTERED=15, /* remote program is not registered */
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RPC_N2AXLATEFAILURE = 22, /* Name to addr translation failed */
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/*
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* unspecified error
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*/
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RPC_FAILED=16,
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RPC_INTR=18,
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RPC_TLIERROR=20,
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RPC_UDERROR=23,
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/*
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* asynchronous errors
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*/
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RPC_INPROGRESS = 24,
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RPC_STALERACHANDLE = 25
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};
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/*
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* Error info.
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*/
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struct rpc_err {
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enum clnt_stat re_status;
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union {
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int RE_errno; /* related system error */
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enum auth_stat RE_why; /* why the auth error occurred */
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struct {
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u_long low; /* lowest verion supported */
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u_long high; /* highest verion supported */
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} RE_vers;
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struct { /* maybe meaningful if RPC_FAILED */
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long s1;
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long s2;
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} RE_lb; /* life boot & debugging only */
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} ru;
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#define re_errno ru.RE_errno
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#define re_why ru.RE_why
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#define re_vers ru.RE_vers
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#define re_lb ru.RE_lb
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};
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/*
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* Client rpc handle.
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* Created by individual implementations, see e.g. rpc_udp.c.
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* Client is responsible for initializing auth, see e.g. auth_none.c.
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*/
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typedef struct CLIENT CLIENT;
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struct CLIENT {
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AUTH *cl_auth; /* authenticator */
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struct clnt_ops {
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enum clnt_stat (*cl_call) (CLIENT *, u_long, xdrproc_t, caddr_t, xdrproc_t,
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caddr_t, struct timeval);
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/* call remote procedure */
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void (*cl_abort) (void); /* abort a call */
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void (*cl_geterr) (CLIENT *, struct rpc_err *);
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/* get specific error code */
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bool_t (*cl_freeres) (CLIENT *, xdrproc_t, caddr_t);
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/* frees results */
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void (*cl_destroy) (CLIENT *); /* destroy this structure */
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bool_t (*cl_control) (CLIENT *, int, char *);
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/* the ioctl() of rpc */
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} *cl_ops;
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caddr_t cl_private; /* private stuff */
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};
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/*
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* client side rpc interface ops
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*
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* Parameter types are:
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*
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*/
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/*
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* enum clnt_stat
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* CLNT_CALL(rh, proc, xargs, argsp, xres, resp, timeout)
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* CLIENT *rh;
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* u_long proc;
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* xdrproc_t xargs;
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* caddr_t argsp;
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* xdrproc_t xres;
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* caddr_t resp;
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* struct timeval timeout;
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*/
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#define CLNT_CALL(rh, proc, xargs, argsp, xres, resp, secs) \
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((*(rh)->cl_ops->cl_call)(rh, proc, xargs, argsp, xres, resp, secs))
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#define clnt_call(rh, proc, xargs, argsp, xres, resp, secs) \
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((*(rh)->cl_ops->cl_call)(rh, proc, xargs, argsp, xres, resp, secs))
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/*
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* void
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* CLNT_ABORT(rh);
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* CLIENT *rh;
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*/
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#define CLNT_ABORT(rh) ((*(rh)->cl_ops->cl_abort)(rh))
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#define clnt_abort(rh) ((*(rh)->cl_ops->cl_abort)(rh))
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/*
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* struct rpc_err
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* CLNT_GETERR(rh);
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* CLIENT *rh;
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*/
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#define CLNT_GETERR(rh,errp) ((*(rh)->cl_ops->cl_geterr)(rh, errp))
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#define clnt_geterr(rh,errp) ((*(rh)->cl_ops->cl_geterr)(rh, errp))
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/*
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* bool_t
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* CLNT_FREERES(rh, xres, resp);
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* CLIENT *rh;
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* xdrproc_t xres;
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* caddr_t resp;
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*/
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#define CLNT_FREERES(rh,xres,resp) ((*(rh)->cl_ops->cl_freeres)(rh,xres,resp))
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#define clnt_freeres(rh,xres,resp) ((*(rh)->cl_ops->cl_freeres)(rh,xres,resp))
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/*
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* bool_t
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* CLNT_CONTROL(cl, request, info)
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* CLIENT *cl;
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* u_int request;
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* char *info;
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*/
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#define CLNT_CONTROL(cl,rq,in) ((*(cl)->cl_ops->cl_control)(cl,rq,in))
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#define clnt_control(cl,rq,in) ((*(cl)->cl_ops->cl_control)(cl,rq,in))
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/*
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* control operations that apply to all transports
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*
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* Note: options marked XXX are no-ops in this implementation of RPC.
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* The are present in TI-RPC but can't be implemented here since they
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* depend on the presence of STREAMS/TLI, which we don't have.
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*/
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#define CLSET_TIMEOUT 1 /* set timeout (timeval) */
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#define CLGET_TIMEOUT 2 /* get timeout (timeval) */
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#define CLGET_SERVER_ADDR 3 /* get server's address (sockaddr) */
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#define CLGET_FD 6 /* get connections file descriptor */
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#define CLGET_SVC_ADDR 7 /* get server's address (netbuf) XXX */
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#define CLSET_FD_CLOSE 8 /* close fd while clnt_destroy */
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#define CLSET_FD_NCLOSE 9 /* Do not close fd while clnt_destroy*/
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#define CLGET_XID 10 /* Get xid */
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#define CLSET_XID 11 /* Set xid */
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#define CLGET_VERS 12 /* Get version number */
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#define CLSET_VERS 13 /* Set version number */
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#define CLGET_PROG 14 /* Get program number */
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#define CLSET_PROG 15 /* Set program number */
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#define CLSET_SVC_ADDR 16 /* get server's address (netbuf) XXX */
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#define CLSET_PUSH_TIMOD 17 /* push timod if not already present XXX */
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#define CLSET_POP_TIMOD 18 /* pop timod XXX */
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/*
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* Connectionless only control operations
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*/
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#define CLSET_RETRY_TIMEOUT 4 /* set retry timeout (timeval) */
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#define CLGET_RETRY_TIMEOUT 5 /* get retry timeout (timeval) */
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/*
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* void
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* CLNT_DESTROY(rh);
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* CLIENT *rh;
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*/
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#define CLNT_DESTROY(rh) ((*(rh)->cl_ops->cl_destroy)(rh))
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#define clnt_destroy(rh) ((*(rh)->cl_ops->cl_destroy)(rh))
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/*
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* RPCTEST is a test program which is accessible on every rpc
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* transport/port. It is used for testing, performance evaluation,
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* and network administration.
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*/
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#define RPCTEST_PROGRAM ((u_long)1)
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#define RPCTEST_VERSION ((u_long)1)
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#define RPCTEST_NULL_PROC ((u_long)2)
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#define RPCTEST_NULL_BATCH_PROC ((u_long)3)
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/*
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* By convention, procedure 0 takes null arguments and returns them
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*/
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#define NULLPROC ((u_long)0)
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/*
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* Below are the client handle creation routines for the various
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* implementations of client side rpc. They can return NULL if a
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* creation failure occurs.
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*/
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/*
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* Memory based rpc (for speed check and testing)
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* CLIENT *
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* clntraw_create(prog, vers)
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* u_long prog;
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* u_long vers;
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*/
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extern CLIENT *clntraw_create (const u_long __prog, const u_long __vers)
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__THROW;
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/*
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* Generic client creation routine. Supported protocols are "udp", "tcp" and
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* "unix"
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* CLIENT *
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* clnt_create(host, prog, vers, prot)
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* char *host; -- hostname
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* u_long prog; -- program number
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* u_ong vers; -- version number
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* char *prot; -- protocol
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*/
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extern CLIENT *clnt_create (const char *__host, const u_long __prog,
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const u_long __vers, const char *__prot)
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__THROW;
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/*
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* TCP based rpc
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* CLIENT *
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* clnttcp_create(raddr, prog, vers, sockp, sendsz, recvsz)
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* struct sockaddr_in *raddr;
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* u_long prog;
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* u_long version;
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* register int *sockp;
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* u_int sendsz;
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* u_int recvsz;
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*/
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extern CLIENT *clnttcp_create (struct sockaddr_in *__raddr, u_long __prog,
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u_long __version, int *__sockp, u_int __sendsz,
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u_int __recvsz) __THROW;
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/*
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* UDP based rpc.
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* CLIENT *
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* clntudp_create(raddr, program, version, wait, sockp)
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* struct sockaddr_in *raddr;
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* u_long program;
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* u_long version;
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* struct timeval wait_resend;
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* int *sockp;
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*
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* Same as above, but you specify max packet sizes.
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* CLIENT *
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* clntudp_bufcreate(raddr, program, version, wait, sockp, sendsz, recvsz)
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* struct sockaddr_in *raddr;
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* u_long program;
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* u_long version;
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* struct timeval wait_resend;
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* int *sockp;
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* u_int sendsz;
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* u_int recvsz;
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*/
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extern CLIENT *clntudp_create (struct sockaddr_in *__raddr, u_long __program,
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u_long __version, struct timeval __wait_resend,
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int *__sockp) __THROW;
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extern CLIENT *clntudp_bufcreate (struct sockaddr_in *__raddr,
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u_long __program, u_long __version,
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struct timeval __wait_resend, int *__sockp,
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u_int __sendsz, u_int __recvsz) __THROW;
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/*
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* AF_UNIX based rpc
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* CLIENT *
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* clntunix_create(raddr, prog, vers, sockp, sendsz, recvsz)
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* struct sockaddr_un *raddr;
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* u_long prog;
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* u_long version;
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* register int *sockp;
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* u_int sendsz;
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* u_int recvsz;
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*/
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extern CLIENT *clntunix_create (struct sockaddr_un *__raddr, u_long __program,
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u_long __version, int *__sockp,
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u_int __sendsz, u_int __recvsz) __THROW;
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extern int callrpc (const char *__host, const u_long __prognum,
|
||
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|
const u_long __versnum, const u_long __procnum,
|
||
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|
const xdrproc_t __inproc, const char *__in,
|
||
|
|
const xdrproc_t __outproc, char *__out) __THROW;
|
||
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|
extern int _rpc_dtablesize (void) __THROW;
|
||
|
|
|
||
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|
/*
|
||
|
|
* Print why creation failed
|
||
|
|
*/
|
||
|
|
extern void clnt_pcreateerror (const char *__msg); /* stderr */
|
||
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|
extern char *clnt_spcreateerror(const char *__msg) __THROW; /* string */
|
||
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|
||
|
|
/*
|
||
|
|
* Like clnt_perror(), but is more verbose in its output
|
||
|
|
*/
|
||
|
|
extern void clnt_perrno (enum clnt_stat __num); /* stderr */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Print an English error message, given the client error code
|
||
|
|
*/
|
||
|
|
extern void clnt_perror (CLIENT *__clnt, const char *__msg);
|
||
|
|
/* stderr */
|
||
|
|
extern char *clnt_sperror (CLIENT *__clnt, const char *__msg) __THROW;
|
||
|
|
/* string */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* If a creation fails, the following allows the user to figure out why.
|
||
|
|
*/
|
||
|
|
struct rpc_createerr {
|
||
|
|
enum clnt_stat cf_stat;
|
||
|
|
struct rpc_err cf_error; /* useful when cf_stat == RPC_PMAPFAILURE */
|
||
|
|
};
|
||
|
|
|
||
|
|
extern struct rpc_createerr rpc_createerr;
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Copy error message to buffer.
|
||
|
|
*/
|
||
|
|
extern char *clnt_sperrno (enum clnt_stat __num) __THROW; /* string */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* get the port number on the host for the rpc program,version and proto
|
||
|
|
*/
|
||
|
|
extern int getrpcport (const char * __host, u_long __prognum,
|
||
|
|
u_long __versnum, u_int __proto) __THROW;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* get the local host's IP address without consulting
|
||
|
|
* name service library functions
|
||
|
|
*/
|
||
|
|
extern void get_myaddress (struct sockaddr_in *) __THROW;
|
||
|
|
|
||
|
|
#define UDPMSGSIZE 8800 /* rpc imposed limit on udp msg size */
|
||
|
|
#define RPCSMALLMSGSIZE 400 /* a more reasonable packet size */
|
||
|
|
|
||
|
|
__END_DECLS
|
||
|
|
|
||
|
|
#endif /* rpc/clnt.h */
|