65d3c627a5
to make asynchronous RPCs. This is needed to help fix ypbind, which can no longer override the clnt_dg_call() method (formerly the clntudp_call() method) due to all the internal descriptor locking code in TI-RPC. Turning on this flag allows us to send an RPC request, then return immediately, and handle a reply later, rather than being forced to do the request and reply in a single function call. Also fix a byte ordering bug: when clnt_dg_call() increments the XID prior to transmitting a request, it uses the raw value, which is wrong. The XID is stored in network byte order, i.e. big-endian. The CLSET_XID and CLGET_XID commands in clnt_dg_control() use ntohl()/htonl() to get the byte ordering right, but because clnt_dg_call() does not do this, using CLSET_XID/CLGET_XID doesn't actually work, unless you're on a big endian host, which we aren't (yet). Fix clnt_dg_call() to byte swap properly when doing the increment.
499 lines
15 KiB
C
499 lines
15 KiB
C
/* $NetBSD: clnt.h,v 1.14 2000/06/02 22:57:55 fvdl Exp $ */
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/*
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* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
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* unrestricted use provided that this legend is included on all tape
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* media and as a part of the software program in whole or part. Users
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* may copy or modify Sun RPC without charge, but are not authorized
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* to license or distribute it to anyone else except as part of a product or
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* program developed by the user.
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*
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* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
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* WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
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*
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* Sun RPC is provided with no support and without any obligation on the
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* part of Sun Microsystems, Inc. to assist in its use, correction,
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* modification or enhancement.
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*
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* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
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* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
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* OR ANY PART THEREOF.
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*
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* In no event will Sun Microsystems, Inc. be liable for any lost revenue
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* or profits or other special, indirect and consequential damages, even if
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* Sun has been advised of the possibility of such damages.
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*
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* Sun Microsystems, Inc.
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* 2550 Garcia Avenue
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* Mountain View, California 94043
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*
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* from: @(#)clnt.h 1.31 94/04/29 SMI
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* from: @(#)clnt.h 2.1 88/07/29 4.0 RPCSRC
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* $FreeBSD$
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*/
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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) 1984, Sun Microsystems, Inc.
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*/
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#ifndef _RPC_CLNT_H_
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#define _RPC_CLNT_H_
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#include <rpc/clnt_stat.h>
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#include <sys/cdefs.h>
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#include <netconfig.h>
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#include <sys/un.h>
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/*
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* Well-known IPV6 RPC broadcast address.
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*/
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#define RPCB_MULTICAST_ADDR "ff02::202"
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/*
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* the following errors are in general unrecoverable. The caller
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* should give up rather than retry.
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*/
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#define IS_UNRECOVERABLE_RPC(s) (((s) == RPC_AUTHERROR) || \
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((s) == RPC_CANTENCODEARGS) || \
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((s) == RPC_CANTDECODERES) || \
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((s) == RPC_VERSMISMATCH) || \
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((s) == RPC_PROCUNAVAIL) || \
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((s) == RPC_PROGUNAVAIL) || \
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((s) == RPC_PROGVERSMISMATCH) || \
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((s) == RPC_CANTDECODEARGS))
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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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rpcvers_t low; /* lowest version supported */
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rpcvers_t high; /* highest version supported */
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} RE_vers;
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struct { /* maybe meaningful if RPC_FAILED */
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int32_t s1;
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int32_t 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
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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 __rpc_client {
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AUTH *cl_auth; /* authenticator */
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struct clnt_ops {
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/* call remote procedure */
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enum clnt_stat (*cl_call) __P((struct __rpc_client *,
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rpcproc_t, xdrproc_t, caddr_t, xdrproc_t,
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caddr_t, struct timeval));
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/* abort a call */
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void (*cl_abort) __P((struct __rpc_client *));
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/* get specific error code */
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void (*cl_geterr) __P((struct __rpc_client *,
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struct rpc_err *));
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/* frees results */
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bool_t (*cl_freeres) __P((struct __rpc_client *,
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xdrproc_t, caddr_t));
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/* destroy this structure */
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void (*cl_destroy) __P((struct __rpc_client *));
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/* the ioctl() of rpc */
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bool_t (*cl_control) __P((struct __rpc_client *, u_int,
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char *));
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} *cl_ops;
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void *cl_private; /* private stuff */
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char *cl_netid; /* network token */
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char *cl_tp; /* device name */
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} CLIENT;
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/*
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* Timers used for the pseudo-transport protocol when using datagrams
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*/
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struct rpc_timers {
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u_short rt_srtt; /* smoothed round-trip time */
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u_short rt_deviate; /* estimated deviation */
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u_long rt_rtxcur; /* current (backed-off) rto */
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};
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/*
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* Feedback values used for possible congestion and rate control
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*/
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#define FEEDBACK_REXMIT1 1 /* first retransmit */
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#define FEEDBACK_OK 2 /* no retransmits */
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/* Used to set version of portmapper used in broadcast */
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#define CLCR_SET_LOWVERS 3
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#define CLCR_GET_LOWVERS 4
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#define RPCSMALLMSGSIZE 400 /* a more reasonable packet size */
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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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* rpcproc_t 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, \
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(caddr_t)(void *)argsp, xres, (caddr_t)(void *)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, \
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(caddr_t)(void *)argsp, xres, (caddr_t)(void *)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 both udp and tcp transports
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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) */
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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) */
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#define CLSET_PUSH_TIMOD 17 /* push timod if not already present */
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#define CLSET_POP_TIMOD 18 /* pop timod */
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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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#define CLSET_ASYNC 19
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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 ((rpcprog_t)1)
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#define RPCTEST_VERSION ((rpcvers_t)1)
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#define RPCTEST_NULL_PROC ((rpcproc_t)2)
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#define RPCTEST_NULL_BATCH_PROC ((rpcproc_t)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 ((rpcproc_t)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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* Generic client creation routine. Supported protocols are those that
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* belong to the nettype namespace (/etc/netconfig).
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* CLIENT *
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* clnt_create(host, prog, vers, prot);
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* const char *host; -- hostname
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* const rpcprog_t prog; -- program number
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* const rpcvers_t vers; -- version number
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* const char *prot; -- protocol
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*/
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__BEGIN_DECLS
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extern CLIENT *clnt_create __P((const char *, const rpcprog_t, const rpcvers_t,
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const char *));
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/*
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*
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* const char *hostname; -- hostname
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* const rpcprog_t prog; -- program number
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* const rpcvers_t vers; -- version number
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* const char *nettype; -- network type
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*/
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/*
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* Generic client creation routine. Supported protocols are which belong
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* to the nettype name space.
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*/
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extern CLIENT *clnt_create_vers __P((const char *, const rpcprog_t, rpcvers_t *,
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const rpcvers_t, const rpcvers_t,
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const char *));
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/*
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* const char *host; -- hostname
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* const rpcprog_t prog; -- program number
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* rpcvers_t *vers_out; -- servers highest available version
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* const rpcvers_t vers_low; -- low version number
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* const rpcvers_t vers_high; -- high version number
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* const char *nettype; -- network type
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*/
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/*
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* Generic client creation routine. It takes a netconfig structure
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* instead of nettype
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*/
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extern CLIENT *clnt_tp_create __P((const char *, const rpcprog_t,
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const rpcvers_t, const struct netconfig *));
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/*
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* const char *hostname; -- hostname
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* const rpcprog_t prog; -- program number
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* const rpcvers_t vers; -- version number
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* const struct netconfig *netconf; -- network config structure
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*/
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/*
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* Generic TLI create routine. Only provided for compatibility.
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*/
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extern CLIENT *clnt_tli_create __P((const int, const struct netconfig *,
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const struct netbuf *, const rpcprog_t,
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const rpcvers_t, const u_int, const u_int));
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/*
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* const register int fd; -- fd
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* const struct netconfig *nconf; -- netconfig structure
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* const struct netbuf *svcaddr; -- servers address
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* const u_long prog; -- program number
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* const u_long vers; -- version number
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* const u_int sendsz; -- send size
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* const u_int recvsz; -- recv size
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*/
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/*
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* Low level clnt create routine for connectionful transports, e.g. tcp.
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*/
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extern CLIENT *clnt_vc_create __P((const int, const struct netbuf *,
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const rpcprog_t, const rpcvers_t,
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const u_int, const u_int));
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/*
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* const int fd; -- open file descriptor
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* const struct netbuf *svcaddr; -- servers address
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* const rpcprog_t prog; -- program number
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* const rpcvers_t vers; -- version number
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* const u_int sendsz; -- buffer recv size
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* const u_int recvsz; -- buffer send size
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*/
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/*
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* Low level clnt create routine for connectionless transports, e.g. udp.
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*/
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extern CLIENT *clnt_dg_create __P((const int, const struct netbuf *,
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const rpcprog_t, const rpcvers_t,
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const u_int, const u_int));
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/*
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* const int fd; -- open file descriptor
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* const struct netbuf *svcaddr; -- servers address
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* const rpcprog_t program; -- program number
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* const rpcvers_t version; -- version number
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* const u_int sendsz; -- buffer recv size
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* const u_int recvsz; -- buffer send size
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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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* clnt_raw_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 *clnt_raw_create __P((rpcprog_t, rpcvers_t));
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__END_DECLS
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/*
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* Print why creation failed
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*/
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__BEGIN_DECLS
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extern void clnt_pcreateerror __P((const char *)); /* stderr */
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extern char *clnt_spcreateerror __P((const char *)); /* string */
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__END_DECLS
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/*
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* Like clnt_perror(), but is more verbose in its output
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*/
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__BEGIN_DECLS
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extern void clnt_perrno __P((enum clnt_stat)); /* stderr */
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extern char *clnt_sperrno __P((enum clnt_stat)); /* string */
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__END_DECLS
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/*
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* Print an English error message, given the client error code
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*/
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__BEGIN_DECLS
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extern void clnt_perror __P((CLIENT *, const char *)); /* stderr */
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extern char *clnt_sperror __P((CLIENT *, const char *)); /* string */
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__END_DECLS
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/*
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* If a creation fails, the following allows the user to figure out why.
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*/
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struct rpc_createerr {
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enum clnt_stat cf_stat;
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struct rpc_err cf_error; /* useful when cf_stat == RPC_PMAPFAILURE */
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};
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#ifdef _THREAD_SAFE
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__BEGIN_DECLS
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extern struct rpc_createerr *__rpc_createerr __P((void));
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__END_DECLS
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#define rpc_createerr (*(__rpc_createerr()))
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#else
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extern struct rpc_createerr rpc_createerr;
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#endif /* _THREAD_SAFE */
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/*
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* The simplified interface:
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* enum clnt_stat
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* rpc_call(host, prognum, versnum, procnum, inproc, in, outproc, out, nettype)
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* const char *host;
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* const rpcprog_t prognum;
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* const rpcvers_t versnum;
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* const rpcproc_t procnum;
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* const xdrproc_t inproc, outproc;
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* const char *in;
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* char *out;
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* const char *nettype;
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*/
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__BEGIN_DECLS
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extern enum clnt_stat rpc_call __P((const char *, const rpcprog_t,
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const rpcvers_t, const rpcproc_t,
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const xdrproc_t, const char *,
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const xdrproc_t, char *, const char *));
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__END_DECLS
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/*
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* RPC broadcast interface
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* The call is broadcasted to all locally connected nets.
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*
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* extern enum clnt_stat
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* rpc_broadcast(prog, vers, proc, xargs, argsp, xresults, resultsp,
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* eachresult, nettype)
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* const rpcprog_t prog; -- program number
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* const rpcvers_t vers; -- version number
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* const rpcproc_t proc; -- procedure number
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* const xdrproc_t xargs; -- xdr routine for args
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* caddr_t argsp; -- pointer to args
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* const xdrproc_t xresults; -- xdr routine for results
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* caddr_t resultsp; -- pointer to results
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* const resultproc_t eachresult; -- call with each result
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* const char *nettype; -- Transport type
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*
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* For each valid response received, the procedure eachresult is called.
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* Its form is:
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* done = eachresult(resp, raddr, nconf)
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* bool_t done;
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* caddr_t resp;
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* struct netbuf *raddr;
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* struct netconfig *nconf;
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* where resp points to the results of the call and raddr is the
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* address if the responder to the broadcast. nconf is the transport
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* on which the response was received.
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*
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* extern enum clnt_stat
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* rpc_broadcast_exp(prog, vers, proc, xargs, argsp, xresults, resultsp,
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* eachresult, inittime, waittime, nettype)
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* const rpcprog_t prog; -- program number
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* const rpcvers_t vers; -- version number
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* const rpcproc_t proc; -- procedure number
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* const xdrproc_t xargs; -- xdr routine for args
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* caddr_t argsp; -- pointer to args
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* const xdrproc_t xresults; -- xdr routine for results
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* caddr_t resultsp; -- pointer to results
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* const resultproc_t eachresult; -- call with each result
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* const int inittime; -- how long to wait initially
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* const int waittime; -- maximum time to wait
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* const char *nettype; -- Transport type
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*/
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typedef bool_t (*resultproc_t) __P((caddr_t, ...));
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__BEGIN_DECLS
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extern enum clnt_stat rpc_broadcast __P((const rpcprog_t, const rpcvers_t,
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const rpcproc_t, const xdrproc_t,
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caddr_t, const xdrproc_t, caddr_t,
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const resultproc_t, const char *));
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extern enum clnt_stat rpc_broadcast_exp __P((const rpcprog_t, const rpcvers_t,
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const rpcproc_t, const xdrproc_t,
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caddr_t, const xdrproc_t, caddr_t,
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const resultproc_t, const int,
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const int, const char *));
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__END_DECLS
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/* For backward compatibility */
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#include <rpc/clnt_soc.h>
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#endif /* !_RPC_CLNT_H_ */
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