NetBSD-5.0.2/include/rpc/clnt.h
/* $NetBSD: clnt.h,v 1.20 2005/12/03 15:16:19 yamt Exp $ */
/*
* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
* unrestricted use provided that this legend is included on all tape
* media and as a part of the software program in whole or part. Users
* may copy or modify Sun RPC without charge, but are not authorized
* to license or distribute it to anyone else except as part of a product or
* program developed by the user.
*
* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
* WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
*
* Sun RPC is provided with no support and without any obligation on the
* part of Sun Microsystems, Inc. to assist in its use, correction,
* modification or enhancement.
*
* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
* OR ANY PART THEREOF.
*
* In no event will Sun Microsystems, Inc. be liable for any lost revenue
* or profits or other special, indirect and consequential damages, even if
* Sun has been advised of the possibility of such damages.
*
* Sun Microsystems, Inc.
* 2550 Garcia Avenue
* Mountain View, California 94043
*
* from: @(#)clnt.h 1.31 94/04/29 SMI
* @(#)clnt.h 2.1 88/07/29 4.0 RPCSRC
*/
/*
* clnt.h - Client side remote procedure call interface.
*
* Copyright (C) 1984, Sun Microsystems, Inc.
*/
#ifndef _RPC_CLNT_H_
#define _RPC_CLNT_H_
#include <sys/cdefs.h>
#include <rpc/rpc_com.h>
/*
* Well-known IPV6 RPC broadcast address.
*/
#define RPCB_MULTICAST_ADDR "ff02::202"
/*
* Rpc calls return an enum clnt_stat. This should be looked at more,
* since each implementation is required to live with this (implementation
* independent) list of errors.
*/
enum clnt_stat {
RPC_SUCCESS=0, /* call succeeded */
/*
* local errors
*/
RPC_CANTENCODEARGS=1, /* can't encode arguments */
RPC_CANTDECODERES=2, /* can't decode results */
RPC_CANTSEND=3, /* failure in sending call */
RPC_CANTRECV=4, /* failure in receiving result */
RPC_TIMEDOUT=5, /* call timed out */
/*
* remote errors
*/
RPC_VERSMISMATCH=6, /* rpc versions not compatible */
RPC_AUTHERROR=7, /* authentication error */
RPC_PROGUNAVAIL=8, /* program not available */
RPC_PROGVERSMISMATCH=9, /* program version mismatched */
RPC_PROCUNAVAIL=10, /* procedure unavailable */
RPC_CANTDECODEARGS=11, /* decode arguments error */
RPC_SYSTEMERROR=12, /* generic "other problem" */
/*
* rpc_call & clnt_create errors
*/
RPC_UNKNOWNHOST=13, /* unknown host name */
RPC_UNKNOWNPROTO=17, /* unknown protocol */
RPC_UNKNOWNADDR = 19, /* Remote address unknown */
RPC_NOBROADCAST = 21, /* Broadcasting not supported */
/*
* rpcbind errors
*/
RPC_RPCBFAILURE=14, /* the pmapper failed in its call */
#define RPC_PMAPFAILURE RPC_RPCBFAILURE
RPC_PROGNOTREGISTERED=15, /* remote program is not registered */
RPC_N2AXLATEFAILURE = 22, /* name -> addr translation failed */
/*
* Misc error in the TLI library (provided for compatibility)
*/
RPC_TLIERROR = 20,
/*
* unspecified error
*/
RPC_FAILED=16,
/*
* asynchronous errors
*/
RPC_INPROGRESS = 24,
RPC_STALERACHANDLE = 25
};
/*
* Error info.
*/
struct rpc_err {
enum clnt_stat re_status;
union {
int RE_errno; /* related system error */
enum auth_stat RE_why; /* why the auth error occurred */
struct {
rpcvers_t low; /* lowest version supported */
rpcvers_t high; /* highest version supported */
} RE_vers;
struct { /* maybe meaningful if RPC_FAILED */
int32_t s1;
int32_t s2;
} RE_lb; /* life boot & debugging only */
} ru;
#define re_errno ru.RE_errno
#define re_why ru.RE_why
#define re_vers ru.RE_vers
#define re_lb ru.RE_lb
};
/*
* Client rpc handle.
* Created by individual implementations
* Client is responsible for initializing auth, see e.g. auth_none.c.
*/
typedef struct __rpc_client {
AUTH *cl_auth; /* authenticator */
const struct clnt_ops {
/* call remote procedure */
enum clnt_stat (*cl_call)(struct __rpc_client *,
rpcproc_t, xdrproc_t, const char *,
xdrproc_t, caddr_t, struct timeval);
/* abort a call */
void (*cl_abort)(struct __rpc_client *);
/* get specific error code */
void (*cl_geterr)(struct __rpc_client *,
struct rpc_err *);
/* frees results */
bool_t (*cl_freeres)(struct __rpc_client *,
xdrproc_t, caddr_t);
/* destroy this structure */
void (*cl_destroy)(struct __rpc_client *);
/* the ioctl() of rpc */
bool_t (*cl_control)(struct __rpc_client *, u_int,
char *);
} *cl_ops;
void *cl_private; /* private stuff */
char *cl_netid; /* network token */
char *cl_tp; /* device name */
} CLIENT;
/*
* Timers used for the pseudo-transport protocol when using datagrams
*/
struct rpc_timers {
u_short rt_srtt; /* smoothed round-trip time */
u_short rt_deviate; /* estimated deviation */
u_long rt_rtxcur; /* current (backed-off) rto */
};
/*
* Feedback values used for possible congestion and rate control
*/
#define FEEDBACK_REXMIT1 1 /* first retransmit */
#define FEEDBACK_OK 2 /* no retransmits */
/* Used to set version of portmapper used in broadcast */
#define CLCR_SET_LOWVERS 3
#define CLCR_GET_LOWVERS 4
#define RPCSMALLMSGSIZE 400 /* a more reasonable packet size */
/*
* client side rpc interface ops
*
* Parameter types are:
*
*/
/*
* enum clnt_stat
* CLNT_CALL(rh, proc, xargs, argsp, xres, resp, timeout)
* CLIENT *rh;
* rpcproc_t proc;
* xdrproc_t xargs;
* caddr_t argsp;
* xdrproc_t xres;
* caddr_t resp;
* struct timeval timeout;
*/
#define CLNT_CALL(rh, proc, xargs, argsp, xres, resp, secs) \
((*(rh)->cl_ops->cl_call)(rh, proc, xargs, \
(const char *)(const void *)(argsp), xres, (caddr_t)(void *)resp, secs))
#define clnt_call(rh, proc, xargs, argsp, xres, resp, secs) \
((*(rh)->cl_ops->cl_call)(rh, proc, xargs, \
(const char *)(const void *)(argsp), xres, (caddr_t)(void *)resp, secs))
/*
* void
* CLNT_ABORT(rh);
* CLIENT *rh;
*/
#define CLNT_ABORT(rh) ((*(rh)->cl_ops->cl_abort)(rh))
#define clnt_abort(rh) ((*(rh)->cl_ops->cl_abort)(rh))
/*
* struct rpc_err
* CLNT_GETERR(rh);
* CLIENT *rh;
*/
#define CLNT_GETERR(rh,errp) ((*(rh)->cl_ops->cl_geterr)(rh, errp))
#define clnt_geterr(rh,errp) ((*(rh)->cl_ops->cl_geterr)(rh, errp))
/*
* bool_t
* CLNT_FREERES(rh, xres, resp);
* CLIENT *rh;
* xdrproc_t xres;
* caddr_t resp;
*/
#define CLNT_FREERES(rh,xres,resp) ((*(rh)->cl_ops->cl_freeres)(rh,xres,resp))
#define clnt_freeres(rh,xres,resp) ((*(rh)->cl_ops->cl_freeres)(rh,xres,resp))
/*
* bool_t
* CLNT_CONTROL(cl, request, info)
* CLIENT *cl;
* u_int request;
* char *info;
*/
#define CLNT_CONTROL(cl,rq,in) ((*(cl)->cl_ops->cl_control)(cl,rq,in))
#define clnt_control(cl,rq,in) ((*(cl)->cl_ops->cl_control)(cl,rq,in))
/*
* control operations that apply to both udp and tcp transports
*/
#define CLSET_TIMEOUT 1 /* set timeout (timeval) */
#define CLGET_TIMEOUT 2 /* get timeout (timeval) */
#define CLGET_SERVER_ADDR 3 /* get server's address (sockaddr) */
#define CLGET_FD 6 /* get connections file descriptor */
#define CLGET_SVC_ADDR 7 /* get server's address (netbuf) */
#define CLSET_FD_CLOSE 8 /* close fd while clnt_destroy */
#define CLSET_FD_NCLOSE 9 /* Do not close fd while clnt_destroy */
#define CLGET_XID 10 /* Get xid */
#define CLSET_XID 11 /* Set xid */
#define CLGET_VERS 12 /* Get version number */
#define CLSET_VERS 13 /* Set version number */
#define CLGET_PROG 14 /* Get program number */
#define CLSET_PROG 15 /* Set program number */
#define CLSET_SVC_ADDR 16 /* get server's address (netbuf) */
#define CLSET_PUSH_TIMOD 17 /* push timod if not already present */
#define CLSET_POP_TIMOD 18 /* pop timod */
/*
* Connectionless only control operations
*/
#define CLSET_RETRY_TIMEOUT 4 /* set retry timeout (timeval) */
#define CLGET_RETRY_TIMEOUT 5 /* get retry timeout (timeval) */
/*
* void
* CLNT_DESTROY(rh);
* CLIENT *rh;
*/
#define CLNT_DESTROY(rh) ((*(rh)->cl_ops->cl_destroy)(rh))
#define clnt_destroy(rh) ((*(rh)->cl_ops->cl_destroy)(rh))
/*
* RPCTEST is a test program which is accessible on every rpc
* transport/port. It is used for testing, performance evaluation,
* and network administration.
*/
#define RPCTEST_PROGRAM ((rpcprog_t)1)
#define RPCTEST_VERSION ((rpcvers_t)1)
#define RPCTEST_NULL_PROC ((rpcproc_t)2)
#define RPCTEST_NULL_BATCH_PROC ((rpcproc_t)3)
/*
* By convention, procedure 0 takes null arguments and returns them
*/
#define NULLPROC ((rpcproc_t)0)
/*
* Below are the client handle creation routines for the various
* implementations of client side rpc. They can return NULL if a
* creation failure occurs.
*/
/*
* Generic client creation routine. Supported protocols are those that
* belong to the nettype namespace (/etc/netconfig).
* CLIENT *
* clnt_create(host, prog, vers, prot);
* const char *host; -- hostname
* const rpcprog_t prog; -- program number
* const rpcvers_t vers; -- version number
* const char *prot; -- protocol
*/
__BEGIN_DECLS
extern CLIENT *clnt_create(const char *, const rpcprog_t, const rpcvers_t,
const char *);
/*
*
* const char *hostname; -- hostname
* const rpcprog_t prog; -- program number
* const rpcvers_t vers; -- version number
* const char *nettype; -- network type
*/
/*
* Generic client creation routine. Supported protocols are which belong
* to the nettype name space.
*/
extern CLIENT *clnt_create_vers(const char *, const rpcprog_t, rpcvers_t *,
const rpcvers_t, const rpcvers_t,
const char *);
/*
* const char *host; -- hostname
* const rpcprog_t prog; -- program number
* rpcvers_t *vers_out; -- servers highest available version
* const rpcvers_t vers_low; -- low version number
* const rpcvers_t vers_high; -- high version number
* const char *nettype; -- network type
*/
/*
* Generic client creation routine. It takes a netconfig structure
* instead of nettype
*/
extern CLIENT *clnt_tp_create(const char *, const rpcprog_t,
const rpcvers_t, const struct netconfig *);
/*
* const char *hostname; -- hostname
* const rpcprog_t prog; -- program number
* const rpcvers_t vers; -- version number
* const struct netconfig *netconf; -- network config structure
*/
/*
* Generic TLI create routine. Only provided for compatibility.
*/
extern CLIENT *clnt_tli_create(const int, const struct netconfig *,
const struct netbuf *, const rpcprog_t,
const rpcvers_t, const u_int, const u_int);
/*
* const register int fd; -- fd
* const struct netconfig *nconf; -- netconfig structure
* const struct netbuf *svcaddr; -- servers address
* const u_long prog; -- program number
* const u_long vers; -- version number
* const u_int sendsz; -- send size
* const u_int recvsz; -- recv size
*/
/*
* Low level clnt create routine for connectionful transports, e.g. tcp.
*/
extern CLIENT *clnt_vc_create(const int, const struct netbuf *,
const rpcprog_t, const rpcvers_t,
const u_int, const u_int);
/*
* const int fd; -- open file descriptor
* const struct netbuf *svcaddr; -- servers address
* const rpcprog_t prog; -- program number
* const rpcvers_t vers; -- version number
* const u_int sendsz; -- buffer recv size
* const u_int recvsz; -- buffer send size
*/
/*
* Low level clnt create routine for connectionless transports, e.g. udp.
*/
extern CLIENT *clnt_dg_create(const int, const struct netbuf *,
const rpcprog_t, const rpcvers_t,
const u_int, const u_int);
/*
* const int fd; -- open file descriptor
* const struct netbuf *svcaddr; -- servers address
* const rpcprog_t program; -- program number
* const rpcvers_t version; -- version number
* const u_int sendsz; -- buffer recv size
* const u_int recvsz; -- buffer send size
*/
/*
* Memory based rpc (for speed check and testing)
* CLIENT *
* clnt_raw_create(prog, vers)
* u_long prog;
* u_long vers;
*/
extern CLIENT *clnt_raw_create (rpcprog_t, rpcvers_t);
__END_DECLS
/*
* Print why creation failed
*/
__BEGIN_DECLS
extern void clnt_pcreateerror (const char *); /* stderr */
extern char *clnt_spcreateerror (const char *); /* string */
__END_DECLS
/*
* Like clnt_perror(), but is more verbose in its output
*/
__BEGIN_DECLS
extern void clnt_perrno (enum clnt_stat); /* stderr */
extern char *clnt_sperrno (enum clnt_stat); /* string */
__END_DECLS
/*
* Print an English error message, given the client error code
*/
__BEGIN_DECLS
extern void clnt_perror (CLIENT *, const char *); /* stderr */
extern char *clnt_sperror (CLIENT *, const char *); /* string */
__END_DECLS
/*
* 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 */
};
#ifdef _REENTRANT
__BEGIN_DECLS
extern struct rpc_createerr *__rpc_createerr(void);
__END_DECLS
#define rpc_createerr (*(__rpc_createerr()))
#else
extern struct rpc_createerr rpc_createerr;
#endif /* _REENTRANT */
/*
* The simplified interface:
* enum clnt_stat
* rpc_call(host, prognum, versnum, procnum, inproc, in, outproc, out, nettype)
* const char *host;
* const rpcprog_t prognum;
* const rpcvers_t versnum;
* const rpcproc_t procnum;
* const xdrproc_t inproc, outproc;
* const char *in;
* char *out;
* const char *nettype;
*/
__BEGIN_DECLS
extern enum clnt_stat rpc_call(const char *, const rpcprog_t,
const rpcvers_t, const rpcproc_t,
const xdrproc_t, const char *,
const xdrproc_t, char *, const char *);
__END_DECLS
/*
* RPC broadcast interface
* The call is broadcasted to all locally connected nets.
*
* extern enum clnt_stat
* rpc_broadcast(prog, vers, proc, xargs, argsp, xresults, resultsp,
* eachresult, nettype)
* const rpcprog_t prog; -- program number
* const rpcvers_t vers; -- version number
* const rpcproc_t proc; -- procedure number
* const xdrproc_t xargs; -- xdr routine for args
* caddr_t argsp; -- pointer to args
* const xdrproc_t xresults; -- xdr routine for results
* caddr_t resultsp; -- pointer to results
* const resultproc_t eachresult; -- call with each result
* const char *nettype; -- Transport type
*
* For each valid response received, the procedure eachresult is called.
* Its form is:
* done = eachresult(resp, raddr, nconf)
* bool_t done;
* caddr_t resp;
* struct netbuf *raddr;
* struct netconfig *nconf;
* where resp points to the results of the call and raddr is the
* address if the responder to the broadcast. nconf is the transport
* on which the response was received.
*
* extern enum clnt_stat
* rpc_broadcast_exp(prog, vers, proc, xargs, argsp, xresults, resultsp,
* eachresult, inittime, waittime, nettype)
* const rpcprog_t prog; -- program number
* const rpcvers_t vers; -- version number
* const rpcproc_t proc; -- procedure number
* const xdrproc_t xargs; -- xdr routine for args
* caddr_t argsp; -- pointer to args
* const xdrproc_t xresults; -- xdr routine for results
* caddr_t resultsp; -- pointer to results
* const resultproc_t eachresult; -- call with each result
* const int inittime; -- how long to wait initially
* const int waittime; -- maximum time to wait
* const char *nettype; -- Transport type
*/
typedef bool_t (*resultproc_t)(caddr_t, ...);
__BEGIN_DECLS
extern enum clnt_stat rpc_broadcast(const rpcprog_t, const rpcvers_t,
const rpcproc_t, const xdrproc_t, const char *, const xdrproc_t, caddr_t,
const resultproc_t, const char *);
extern enum clnt_stat rpc_broadcast_exp(const rpcprog_t, const rpcvers_t,
const rpcproc_t, const xdrproc_t, const char *, const xdrproc_t, caddr_t,
const resultproc_t, const int, const int, const char *);
__END_DECLS
/* For backward compatibility */
#include <rpc/clnt_soc.h>
#endif /* !_RPC_CLNT_H_ */