The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/rpc/clnt.h

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    1 /*      $NetBSD: clnt.h,v 1.14 2000/06/02 22:57:55 fvdl Exp $   */
    2 
    3 /*
    4  * The contents of this file are subject to the Sun Standards
    5  * License Version 1.0 the (the "License";) You may not use
    6  * this file except in compliance with the License.  You may
    7  * obtain a copy of the License at lib/libc/rpc/LICENSE
    8  *
    9  * Software distributed under the License is distributed on
   10  * an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either
   11  * express or implied.  See the License for the specific
   12  * language governing rights and limitations under the License.
   13  *
   14  * The Original Code is Copyright 1998 by Sun Microsystems, Inc
   15  *
   16  * The Initial Developer of the Original Code is:  Sun
   17  * Microsystems, Inc.
   18  *
   19  * All Rights Reserved.
   20  *
   21  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
   22  * unrestricted use provided that this legend is included on all tape
   23  * media and as a part of the software program in whole or part.  Users
   24  * may copy or modify Sun RPC without charge, but are not authorized
   25  * to license or distribute it to anyone else except as part of a product or
   26  * program developed by the user.
   27  *
   28  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
   29  * WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   30  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
   31  *
   32  * Sun RPC is provided with no support and without any obligation on the
   33  * part of Sun Microsystems, Inc. to assist in its use, correction,
   34  * modification or enhancement.
   35  *
   36  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
   37  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
   38  * OR ANY PART THEREOF.
   39  *
   40  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
   41  * or profits or other special, indirect and consequential damages, even if
   42  * Sun has been advised of the possibility of such damages.
   43  *
   44  * Sun Microsystems, Inc.
   45  * 2550 Garcia Avenue
   46  * Mountain View, California  94043
   47  *
   48  *      from: @(#)clnt.h 1.31 94/04/29 SMI
   49  *      from: @(#)clnt.h        2.1 88/07/29 4.0 RPCSRC
   50  * $FreeBSD$
   51  */
   52 
   53 /*
   54  * clnt.h - Client side remote procedure call interface.
   55  *
   56  * Copyright (c) 1986-1991,1994-1999 by Sun Microsystems, Inc.
   57  * All rights reserved.
   58  */
   59 
   60 #ifndef _RPC_CLNT_H_
   61 #define _RPC_CLNT_H_
   62 #include <rpc/clnt_stat.h>
   63 #include <sys/cdefs.h>
   64 #ifdef _KERNEL
   65 #include <rpc/netconfig.h>
   66 #else
   67 #include <netconfig.h>
   68 #endif
   69 #include <sys/un.h>
   70 
   71 /*
   72  * Well-known IPV6 RPC broadcast address.
   73  */
   74 #define RPCB_MULTICAST_ADDR "ff02::202"
   75 
   76 /*
   77  * the following errors are in general unrecoverable.  The caller
   78  * should give up rather than retry.
   79  */
   80 #define IS_UNRECOVERABLE_RPC(s) (((s) == RPC_AUTHERROR) || \
   81         ((s) == RPC_CANTENCODEARGS) || \
   82         ((s) == RPC_CANTDECODERES) || \
   83         ((s) == RPC_VERSMISMATCH) || \
   84         ((s) == RPC_PROCUNAVAIL) || \
   85         ((s) == RPC_PROGUNAVAIL) || \
   86         ((s) == RPC_PROGVERSMISMATCH) || \
   87         ((s) == RPC_CANTDECODEARGS))
   88 
   89 /*
   90  * Error info.
   91  */
   92 struct rpc_err {
   93         enum clnt_stat re_status;
   94         union {
   95                 int RE_errno;           /* related system error */
   96                 enum auth_stat RE_why;  /* why the auth error occurred */
   97                 struct {
   98                         rpcvers_t low;  /* lowest version supported */
   99                         rpcvers_t high; /* highest version supported */
  100                 } RE_vers;
  101                 struct {                /* maybe meaningful if RPC_FAILED */
  102                         int32_t s1;
  103                         int32_t s2;
  104                 } RE_lb;                /* life boot & debugging only */
  105         } ru;
  106 #define re_errno        ru.RE_errno
  107 #define re_why          ru.RE_why
  108 #define re_vers         ru.RE_vers
  109 #define re_lb           ru.RE_lb
  110 };
  111 
  112 
  113 /*
  114  * Client rpc handle.
  115  * Created by individual implementations
  116  * Client is responsible for initializing auth, see e.g. auth_none.c.
  117  */
  118 typedef struct __rpc_client {
  119         AUTH    *cl_auth;                       /* authenticator */
  120         struct clnt_ops {
  121                 /* call remote procedure */
  122                 enum clnt_stat  (*cl_call)(struct __rpc_client *,
  123                                     rpcproc_t, xdrproc_t, void *, xdrproc_t,
  124                                         void *, struct timeval);
  125                 /* abort a call */
  126                 void            (*cl_abort)(struct __rpc_client *);
  127                 /* get specific error code */
  128                 void            (*cl_geterr)(struct __rpc_client *,
  129                                         struct rpc_err *);
  130                 /* frees results */
  131                 bool_t          (*cl_freeres)(struct __rpc_client *,
  132                                         xdrproc_t, void *);
  133                 /* destroy this structure */
  134                 void            (*cl_destroy)(struct __rpc_client *);
  135                 /* the ioctl() of rpc */
  136                 bool_t          (*cl_control)(struct __rpc_client *, u_int,
  137                                     void *);
  138         } *cl_ops;
  139         void                    *cl_private;    /* private stuff */
  140         char                    *cl_netid;      /* network token */
  141         char                    *cl_tp;         /* device name */
  142 } CLIENT;
  143 
  144 
  145 /*
  146  * Timers used for the pseudo-transport protocol when using datagrams
  147  */
  148 struct rpc_timers {
  149         u_short         rt_srtt;        /* smoothed round-trip time */
  150         u_short         rt_deviate;     /* estimated deviation */
  151         u_long          rt_rtxcur;      /* current (backed-off) rto */
  152 };
  153 
  154 /*      
  155  * Feedback values used for possible congestion and rate control
  156  */
  157 #define FEEDBACK_REXMIT1        1       /* first retransmit */
  158 #define FEEDBACK_OK             2       /* no retransmits */    
  159 
  160 /* Used to set version of portmapper used in broadcast */
  161   
  162 #define CLCR_SET_LOWVERS        3
  163 #define CLCR_GET_LOWVERS        4
  164  
  165 #define RPCSMALLMSGSIZE 400     /* a more reasonable packet size */
  166 
  167 /*
  168  * client side rpc interface ops
  169  *
  170  * Parameter types are:
  171  *
  172  */
  173 
  174 /*
  175  * enum clnt_stat
  176  * CLNT_CALL(rh, proc, xargs, argsp, xres, resp, timeout)
  177  *      CLIENT *rh;
  178  *      rpcproc_t proc;
  179  *      xdrproc_t xargs;
  180  *      void *argsp;
  181  *      xdrproc_t xres;
  182  *      void *resp;
  183  *      struct timeval timeout;
  184  */
  185 #define CLNT_CALL(rh, proc, xargs, argsp, xres, resp, secs) \
  186         ((*(rh)->cl_ops->cl_call)(rh, proc, xargs, \
  187                 argsp, xres, resp, secs))
  188 #define clnt_call(rh, proc, xargs, argsp, xres, resp, secs) \
  189         ((*(rh)->cl_ops->cl_call)(rh, proc, xargs, \
  190                 argsp, xres, resp, secs))
  191 
  192 /*
  193  * void
  194  * CLNT_ABORT(rh);
  195  *      CLIENT *rh;
  196  */
  197 #define CLNT_ABORT(rh)  ((*(rh)->cl_ops->cl_abort)(rh))
  198 #define clnt_abort(rh)  ((*(rh)->cl_ops->cl_abort)(rh))
  199 
  200 /*
  201  * struct rpc_err
  202  * CLNT_GETERR(rh);
  203  *      CLIENT *rh;
  204  */
  205 #define CLNT_GETERR(rh,errp)    ((*(rh)->cl_ops->cl_geterr)(rh, errp))
  206 #define clnt_geterr(rh,errp)    ((*(rh)->cl_ops->cl_geterr)(rh, errp))
  207 
  208 
  209 /*
  210  * bool_t
  211  * CLNT_FREERES(rh, xres, resp);
  212  *      CLIENT *rh;
  213  *      xdrproc_t xres;
  214  *      void *resp;
  215  */
  216 #define CLNT_FREERES(rh,xres,resp) ((*(rh)->cl_ops->cl_freeres)(rh,xres,resp))
  217 #define clnt_freeres(rh,xres,resp) ((*(rh)->cl_ops->cl_freeres)(rh,xres,resp))
  218 
  219 /*
  220  * bool_t
  221  * CLNT_CONTROL(cl, request, info)
  222  *      CLIENT *cl;
  223  *      u_int request;
  224  *      char *info;
  225  */
  226 #define CLNT_CONTROL(cl,rq,in) ((*(cl)->cl_ops->cl_control)(cl,rq,in))
  227 #define clnt_control(cl,rq,in) ((*(cl)->cl_ops->cl_control)(cl,rq,in))
  228 
  229 /*
  230  * control operations that apply to both udp and tcp transports
  231  */
  232 #define CLSET_TIMEOUT           1       /* set timeout (timeval) */
  233 #define CLGET_TIMEOUT           2       /* get timeout (timeval) */
  234 #define CLGET_SERVER_ADDR       3       /* get server's address (sockaddr) */
  235 #define CLGET_FD                6       /* get connections file descriptor */
  236 #define CLGET_SVC_ADDR          7       /* get server's address (netbuf) */
  237 #define CLSET_FD_CLOSE          8       /* close fd while clnt_destroy */
  238 #define CLSET_FD_NCLOSE         9       /* Do not close fd while clnt_destroy */
  239 #define CLGET_XID               10      /* Get xid */
  240 #define CLSET_XID               11      /* Set xid */
  241 #define CLGET_VERS              12      /* Get version number */
  242 #define CLSET_VERS              13      /* Set version number */
  243 #define CLGET_PROG              14      /* Get program number */
  244 #define CLSET_PROG              15      /* Set program number */
  245 #define CLSET_SVC_ADDR          16      /* get server's address (netbuf) */
  246 #define CLSET_PUSH_TIMOD        17      /* push timod if not already present */
  247 #define CLSET_POP_TIMOD         18      /* pop timod */
  248 /*
  249  * Connectionless only control operations
  250  */
  251 #define CLSET_RETRY_TIMEOUT 4   /* set retry timeout (timeval) */
  252 #define CLGET_RETRY_TIMEOUT 5   /* get retry timeout (timeval) */
  253 #define CLSET_ASYNC             19
  254 #define CLSET_CONNECT           20      /* Use connect() for UDP. (int) */
  255 
  256 #ifdef _KERNEL
  257 /*
  258  * Kernel control operations. The default msleep string is "rpcrecv",
  259  * and sleeps are non-interruptible by default.
  260  */
  261 #define CLSET_WAITCHAN          21      /* set string to use in msleep call */
  262 #define CLGET_WAITCHAN          22      /* get string used in msleep call */
  263 #define CLSET_INTERRUPTIBLE     23      /* set interruptible flag */
  264 #define CLGET_INTERRUPTIBLE     24      /* set interruptible flag */
  265 #endif
  266 
  267 
  268 /*
  269  * void
  270  * CLNT_DESTROY(rh);
  271  *      CLIENT *rh;
  272  */
  273 #define CLNT_DESTROY(rh)        ((*(rh)->cl_ops->cl_destroy)(rh))
  274 #define clnt_destroy(rh)        ((*(rh)->cl_ops->cl_destroy)(rh))
  275 
  276 
  277 /*
  278  * RPCTEST is a test program which is accessible on every rpc
  279  * transport/port.  It is used for testing, performance evaluation,
  280  * and network administration.
  281  */
  282 
  283 #define RPCTEST_PROGRAM         ((rpcprog_t)1)
  284 #define RPCTEST_VERSION         ((rpcvers_t)1)
  285 #define RPCTEST_NULL_PROC       ((rpcproc_t)2)
  286 #define RPCTEST_NULL_BATCH_PROC ((rpcproc_t)3)
  287 
  288 /*
  289  * By convention, procedure 0 takes null arguments and returns them
  290  */
  291 
  292 #define NULLPROC ((rpcproc_t)0)
  293 
  294 /*
  295  * Below are the client handle creation routines for the various
  296  * implementations of client side rpc.  They can return NULL if a
  297  * creation failure occurs.
  298  */
  299 
  300 /*
  301  * Generic client creation routine. Supported protocols are those that
  302  * belong to the nettype namespace (/etc/netconfig).
  303  */
  304 __BEGIN_DECLS
  305 #ifdef _KERNEL
  306 
  307 /*
  308  *      struct socket *so;                      -- socket
  309  *      struct sockaddr *svcaddr;               -- servers address
  310  *      rpcprog_t prog;                         -- program number
  311  *      rpcvers_t vers;                         -- version number
  312  *      size_t sendsz;                          -- buffer recv size
  313  *      size_t recvsz;                          -- buffer send size
  314  */
  315 extern CLIENT *clnt_dg_create(struct socket *so,
  316     struct sockaddr *svcaddr, rpcprog_t program, rpcvers_t version,
  317     size_t sendsz, size_t recvsz);
  318 
  319 /*
  320  *      struct socket *so;                      -- socket
  321  *      struct sockaddr *svcaddr;               -- servers address
  322  *      rpcprog_t prog;                         -- program number
  323  *      rpcvers_t vers;                         -- version number
  324  *      size_t sendsz;                          -- buffer recv size
  325  *      size_t recvsz;                          -- buffer send size
  326  */
  327 extern CLIENT *clnt_vc_create(struct socket *so,
  328     struct sockaddr *svcaddr, rpcprog_t program, rpcvers_t version,
  329     size_t sendsz, size_t recvsz);
  330 
  331 /*
  332  *      struct netconfig *nconf;                -- network type
  333  *      struct sockaddr *svcaddr;               -- servers address
  334  *      rpcprog_t prog;                         -- program number
  335  *      rpcvers_t vers;                         -- version number
  336  *      size_t sendsz;                          -- buffer recv size
  337  *      size_t recvsz;                          -- buffer send size
  338  */
  339 extern CLIENT *clnt_reconnect_create(struct netconfig *nconf,
  340     struct sockaddr *svcaddr, rpcprog_t program, rpcvers_t version,
  341     size_t sendsz, size_t recvsz);
  342 
  343 #else
  344 
  345 extern CLIENT *clnt_create(const char *, const rpcprog_t, const rpcvers_t,
  346                            const char *);
  347 /*
  348  *
  349  *      const char *hostname;                   -- hostname
  350  *      const rpcprog_t prog;                   -- program number
  351  *      const rpcvers_t vers;                   -- version number
  352  *      const char *nettype;                    -- network type
  353  */
  354 
  355  /*
  356  * Generic client creation routine. Just like clnt_create(), except
  357  * it takes an additional timeout parameter.
  358  */
  359 extern CLIENT * clnt_create_timed(const char *, const rpcprog_t,
  360         const rpcvers_t, const char *, const struct timeval *);
  361 /*
  362  *
  363  *      const char *hostname;                   -- hostname
  364  *      const rpcprog_t prog;                   -- program number
  365  *      const rpcvers_t vers;                   -- version number
  366  *      const char *nettype;                    -- network type
  367  *      const struct timeval *tp;               -- timeout
  368  */
  369 
  370 /*
  371  * Generic client creation routine. Supported protocols are which belong
  372  * to the nettype name space.
  373  */
  374 extern CLIENT *clnt_create_vers(const char *, const rpcprog_t, rpcvers_t *,
  375                                 const rpcvers_t, const rpcvers_t,
  376                                 const char *);
  377 /*
  378  *      const char *host;               -- hostname
  379  *      const rpcprog_t prog;           -- program number
  380  *      rpcvers_t *vers_out;            -- servers highest available version
  381  *      const rpcvers_t vers_low;       -- low version number
  382  *      const rpcvers_t vers_high;      -- high version number
  383  *      const char *nettype;            -- network type
  384  */
  385 
  386 /*
  387  * Generic client creation routine. Supported protocols are which belong
  388  * to the nettype name space.
  389  */
  390 extern CLIENT * clnt_create_vers_timed(const char *, const rpcprog_t,
  391         rpcvers_t *, const rpcvers_t, const rpcvers_t, const char *,
  392         const struct timeval *);
  393 /*
  394  *      const char *host;               -- hostname
  395  *      const rpcprog_t prog;           -- program number
  396  *      rpcvers_t *vers_out;            -- servers highest available version
  397  *      const rpcvers_t vers_low;       -- low version number
  398  *      const rpcvers_t vers_high;      -- high version number
  399  *      const char *nettype;            -- network type
  400  *      const struct timeval *tp        -- timeout
  401  */
  402 
  403 /*
  404  * Generic client creation routine. It takes a netconfig structure
  405  * instead of nettype
  406  */
  407 extern CLIENT *clnt_tp_create(const char *, const rpcprog_t,
  408                               const rpcvers_t, const struct netconfig *);
  409 /*
  410  *      const char *hostname;                   -- hostname
  411  *      const rpcprog_t prog;                   -- program number
  412  *      const rpcvers_t vers;                   -- version number
  413  *      const struct netconfig *netconf;        -- network config structure
  414  */
  415 
  416 /*
  417  * Generic client creation routine. Just like clnt_tp_create(), except
  418  * it takes an additional timeout parameter.
  419  */
  420 extern CLIENT * clnt_tp_create_timed(const char *, const rpcprog_t,
  421         const rpcvers_t, const struct netconfig *, const struct timeval *);
  422 /*
  423  *      const char *hostname;                   -- hostname
  424  *      const rpcprog_t prog;                   -- program number
  425  *      const rpcvers_t vers;                   -- version number
  426  *      const struct netconfig *netconf;        -- network config structure
  427  *      const struct timeval *tp                -- timeout
  428  */
  429 
  430 /*
  431  * Generic TLI create routine. Only provided for compatibility.
  432  */
  433 
  434 extern CLIENT *clnt_tli_create(const int, const struct netconfig *,
  435                                struct netbuf *, const rpcprog_t,
  436                                const rpcvers_t, const u_int, const u_int);
  437 /*
  438  *      const register int fd;          -- fd
  439  *      const struct netconfig *nconf;  -- netconfig structure
  440  *      struct netbuf *svcaddr;         -- servers address
  441  *      const u_long prog;                      -- program number
  442  *      const u_long vers;                      -- version number
  443  *      const u_int sendsz;                     -- send size
  444  *      const u_int recvsz;                     -- recv size
  445  */
  446 
  447 /*
  448  * Low level clnt create routine for connectionful transports, e.g. tcp.
  449  */
  450 extern CLIENT *clnt_vc_create(const int, const struct netbuf *,
  451                               const rpcprog_t, const rpcvers_t,
  452                               u_int, u_int);
  453 /*
  454  * Added for compatibility to old rpc 4.0. Obsoleted by clnt_vc_create().
  455  */
  456 extern CLIENT *clntunix_create(struct sockaddr_un *,
  457                                u_long, u_long, int *, u_int, u_int);
  458 /*
  459  *      const int fd;                           -- open file descriptor
  460  *      const struct netbuf *svcaddr;           -- servers address
  461  *      const rpcprog_t prog;                   -- program number
  462  *      const rpcvers_t vers;                   -- version number
  463  *      const u_int sendsz;                     -- buffer recv size
  464  *      const u_int recvsz;                     -- buffer send size
  465  */
  466 
  467 /*
  468  * Low level clnt create routine for connectionless transports, e.g. udp.
  469  */
  470 extern CLIENT *clnt_dg_create(const int, const struct netbuf *,
  471                               const rpcprog_t, const rpcvers_t,
  472                               const u_int, const u_int);
  473 /*
  474  *      const int fd;                           -- open file descriptor
  475  *      const struct netbuf *svcaddr;           -- servers address
  476  *      const rpcprog_t program;                -- program number
  477  *      const rpcvers_t version;                -- version number
  478  *      const u_int sendsz;                     -- buffer recv size
  479  *      const u_int recvsz;                     -- buffer send size
  480  */
  481 
  482 /*
  483  * Memory based rpc (for speed check and testing)
  484  * CLIENT *
  485  * clnt_raw_create(prog, vers)
  486  *      u_long prog;
  487  *      u_long vers;
  488  */
  489 extern CLIENT *clnt_raw_create(rpcprog_t, rpcvers_t);
  490 #endif
  491 
  492 __END_DECLS
  493 
  494 
  495 /*
  496  * Print why creation failed
  497  */
  498 __BEGIN_DECLS
  499 extern void clnt_pcreateerror(const char *);                    /* stderr */
  500 extern char *clnt_spcreateerror(const char *);                  /* string */
  501 __END_DECLS
  502 
  503 /*
  504  * Like clnt_perror(), but is more verbose in its output
  505  */
  506 __BEGIN_DECLS
  507 extern void clnt_perrno(enum clnt_stat);                /* stderr */
  508 extern char *clnt_sperrno(enum clnt_stat);              /* string */
  509 __END_DECLS
  510 
  511 /*
  512  * Print an English error message, given the client error code
  513  */
  514 __BEGIN_DECLS
  515 extern void clnt_perror(CLIENT *, const char *);                /* stderr */
  516 extern char *clnt_sperror(CLIENT *, const char *);              /* string */
  517 __END_DECLS
  518 
  519 
  520 /*
  521  * If a creation fails, the following allows the user to figure out why.
  522  */
  523 struct rpc_createerr {
  524         enum clnt_stat cf_stat;
  525         struct rpc_err cf_error; /* useful when cf_stat == RPC_PMAPFAILURE */
  526 };
  527 
  528 #ifdef _KERNEL
  529 extern struct rpc_createerr rpc_createerr;
  530 #else
  531 __BEGIN_DECLS
  532 extern struct rpc_createerr     *__rpc_createerr(void);
  533 __END_DECLS
  534 #define rpc_createerr           (*(__rpc_createerr()))
  535 #endif
  536 
  537 /*
  538  * The simplified interface:
  539  * enum clnt_stat
  540  * rpc_call(host, prognum, versnum, procnum, inproc, in, outproc, out, nettype)
  541  *      const char *host;
  542  *      const rpcprog_t prognum;
  543  *      const rpcvers_t versnum;
  544  *      const rpcproc_t procnum;
  545  *      const xdrproc_t inproc, outproc;
  546  *      const char *in;
  547  *      char *out;
  548  *      const char *nettype;
  549  */
  550 __BEGIN_DECLS
  551 extern enum clnt_stat rpc_call(const char *, const rpcprog_t,
  552                                const rpcvers_t, const rpcproc_t,
  553                                const xdrproc_t, const char *,
  554                                const xdrproc_t, char *, const char *);
  555 __END_DECLS
  556 
  557 /*
  558  * RPC broadcast interface
  559  * The call is broadcasted to all locally connected nets.
  560  *
  561  * extern enum clnt_stat
  562  * rpc_broadcast(prog, vers, proc, xargs, argsp, xresults, resultsp,
  563  *                      eachresult, nettype)
  564  *      const rpcprog_t         prog;           -- program number
  565  *      const rpcvers_t         vers;           -- version number
  566  *      const rpcproc_t         proc;           -- procedure number
  567  *      const xdrproc_t xargs;          -- xdr routine for args
  568  *      caddr_t         argsp;          -- pointer to args
  569  *      const xdrproc_t xresults;       -- xdr routine for results
  570  *      caddr_t         resultsp;       -- pointer to results
  571  *      const resultproc_t      eachresult;     -- call with each result
  572  *      const char              *nettype;       -- Transport type
  573  *
  574  * For each valid response received, the procedure eachresult is called.
  575  * Its form is:
  576  *              done = eachresult(resp, raddr, nconf)
  577  *                      bool_t done;
  578  *                      caddr_t resp;
  579  *                      struct netbuf *raddr;
  580  *                      struct netconfig *nconf;
  581  * where resp points to the results of the call and raddr is the
  582  * address if the responder to the broadcast.  nconf is the transport
  583  * on which the response was received.
  584  *
  585  * extern enum clnt_stat
  586  * rpc_broadcast_exp(prog, vers, proc, xargs, argsp, xresults, resultsp,
  587  *                      eachresult, inittime, waittime, nettype)
  588  *      const rpcprog_t         prog;           -- program number
  589  *      const rpcvers_t         vers;           -- version number
  590  *      const rpcproc_t         proc;           -- procedure number
  591  *      const xdrproc_t xargs;          -- xdr routine for args
  592  *      caddr_t         argsp;          -- pointer to args
  593  *      const xdrproc_t xresults;       -- xdr routine for results
  594  *      caddr_t         resultsp;       -- pointer to results
  595  *      const resultproc_t      eachresult;     -- call with each result
  596  *      const int               inittime;       -- how long to wait initially
  597  *      const int               waittime;       -- maximum time to wait
  598  *      const char              *nettype;       -- Transport type
  599  */
  600 
  601 typedef bool_t (*resultproc_t)(caddr_t, ...);
  602 
  603 __BEGIN_DECLS
  604 extern enum clnt_stat rpc_broadcast(const rpcprog_t, const rpcvers_t,
  605                                     const rpcproc_t, const xdrproc_t,
  606                                     caddr_t, const xdrproc_t, caddr_t,
  607                                     const resultproc_t, const char *);
  608 extern enum clnt_stat rpc_broadcast_exp(const rpcprog_t, const rpcvers_t,
  609                                         const rpcproc_t, const xdrproc_t,
  610                                         caddr_t, const xdrproc_t, caddr_t,
  611                                         const resultproc_t, const int,
  612                                         const int, const char *);
  613 __END_DECLS
  614 
  615 #ifndef _KERNEL
  616 /* For backward compatibility */
  617 #include <rpc/clnt_soc.h>
  618 #endif
  619 
  620 #endif /* !_RPC_CLNT_H_ */

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