1 /* 2 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for 3 * unrestricted use provided that this legend is included on all tape 4 * media and as a part of the software program in whole or part. Users 5 * may copy or modify Sun RPC without charge, but are not authorized 6 * to license or distribute it to anyone else except as part of a product or 7 * program developed by the user. 8 * 9 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE 10 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR 11 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. 12 * 13 * Sun RPC is provided with no support and without any obligation on the 14 * part of Sun Microsystems, Inc. to assist in its use, correction, 15 * modification or enhancement. 16 * 17 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE 18 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC 19 * OR ANY PART THEREOF. 20 * 21 * In no event will Sun Microsystems, Inc. be liable for any lost revenue 22 * or profits or other special, indirect and consequential damages, even if 23 * Sun has been advised of the possibility of such damages. 24 * 25 * Sun Microsystems, Inc. 26 * 2550 Garcia Avenue 27 * Mountain View, California 94043 28 * 29 * @(#)clnt_bcast.c 1.18 94/05/03 SMI; 1.15 89/04/21 Copyr 1988 Sun Micro 30 * $NetBSD: clnt_bcast.c,v 1.3 2000/07/06 03:05:20 christos Exp $ 31 * $FreeBSD: src/lib/libc/rpc/clnt_bcast.c,v 1.9 2006/09/09 22:14:42 mbr Exp $ 32 * $DragonFly$ 33 */ 34 /* 35 * Copyright (c) 1986-1991 by Sun Microsystems Inc. 36 */ 37 38 /* 39 * clnt_bcast.c 40 * Client interface to broadcast service. 41 * 42 * Copyright (C) 1988, Sun Microsystems, Inc. 43 * 44 * The following is kludged-up support for simple rpc broadcasts. 45 * Someday a large, complicated system will replace these routines. 46 */ 47 48 #include "namespace.h" 49 #include <sys/types.h> 50 #include <sys/socket.h> 51 #include <sys/queue.h> 52 #include <net/if.h> 53 #include <netinet/in.h> 54 #include <ifaddrs.h> 55 #include <sys/poll.h> 56 #include <rpc/rpc.h> 57 #ifdef PORTMAP 58 #include <rpc/pmap_prot.h> 59 #include <rpc/pmap_clnt.h> 60 #include <rpc/pmap_rmt.h> 61 #endif /* PORTMAP */ 62 #include <rpc/nettype.h> 63 #include <arpa/inet.h> 64 #ifdef RPC_DEBUG 65 #include <stdio.h> 66 #endif 67 #include <errno.h> 68 #include <stdlib.h> 69 #include <unistd.h> 70 #include <netdb.h> 71 #include <err.h> 72 #include <string.h> 73 #include "un-namespace.h" 74 75 #include "rpc_com.h" 76 77 #define MAXBCAST 20 /* Max no of broadcasting transports */ 78 #define INITTIME 4000 /* Time to wait initially */ 79 #define WAITTIME 8000 /* Maximum time to wait */ 80 81 /* 82 * If nettype is NULL, it broadcasts on all the available 83 * datagram_n transports. May potentially lead to broadacst storms 84 * and hence should be used with caution, care and courage. 85 * 86 * The current parameter xdr packet size is limited by the max tsdu 87 * size of the transport. If the max tsdu size of any transport is 88 * smaller than the parameter xdr packet, then broadcast is not 89 * sent on that transport. 90 * 91 * Also, the packet size should be less the packet size of 92 * the data link layer (for ethernet it is 1400 bytes). There is 93 * no easy way to find out the max size of the data link layer and 94 * we are assuming that the args would be smaller than that. 95 * 96 * The result size has to be smaller than the transport tsdu size. 97 * 98 * If PORTMAP has been defined, we send two packets for UDP, one for 99 * rpcbind and one for portmap. For those machines which support 100 * both rpcbind and portmap, it will cause them to reply twice, and 101 * also here it will get two responses ... inefficient and clumsy. 102 */ 103 104 struct broadif { 105 int index; 106 struct sockaddr_storage broadaddr; 107 TAILQ_ENTRY(broadif) link; 108 }; 109 110 typedef TAILQ_HEAD(, broadif) broadlist_t; 111 112 int __rpc_broadenable(int, int, struct broadif *); 113 void __rpc_freebroadifs(broadlist_t *); 114 int __rpc_getbroadifs(int, int, int, broadlist_t *); 115 116 int __rpc_lowvers = 0; 117 118 int 119 __rpc_getbroadifs(int af, int proto, int socktype, broadlist_t *list) 120 { 121 int count = 0; 122 struct broadif *bip; 123 struct ifaddrs *ifap, *ifp; 124 #ifdef INET6 125 struct sockaddr_in6 *sin6; 126 #endif 127 struct sockaddr_in *sin; 128 struct addrinfo hints, *res; 129 130 if (getifaddrs(&ifp) < 0) 131 return 0; 132 133 memset(&hints, 0, sizeof hints); 134 135 hints.ai_family = af; 136 hints.ai_protocol = proto; 137 hints.ai_socktype = socktype; 138 139 if (getaddrinfo(NULL, "sunrpc", &hints, &res) != 0) { 140 freeifaddrs(ifp); 141 return 0; 142 } 143 144 for (ifap = ifp; ifap != NULL; ifap = ifap->ifa_next) { 145 if (ifap->ifa_addr->sa_family != af || 146 !(ifap->ifa_flags & IFF_UP)) 147 continue; 148 bip = (struct broadif *)malloc(sizeof *bip); 149 if (bip == NULL) 150 break; 151 bip->index = if_nametoindex(ifap->ifa_name); 152 if ( 153 #ifdef INET6 154 af != AF_INET6 && 155 #endif 156 (ifap->ifa_flags & IFF_BROADCAST) && 157 ifap->ifa_broadaddr) { 158 memcpy(&bip->broadaddr, ifap->ifa_broadaddr, 159 (size_t)ifap->ifa_broadaddr->sa_len); 160 sin = (struct sockaddr_in *)(void *)&bip->broadaddr; 161 sin->sin_port = 162 ((struct sockaddr_in *) 163 (void *)res->ai_addr)->sin_port; 164 } else 165 #ifdef INET6 166 if (af == AF_INET6 && (ifap->ifa_flags & IFF_MULTICAST)) { 167 sin6 = (struct sockaddr_in6 *)(void *)&bip->broadaddr; 168 inet_pton(af, RPCB_MULTICAST_ADDR, &sin6->sin6_addr); 169 sin6->sin6_family = af; 170 sin6->sin6_len = sizeof *sin6; 171 sin6->sin6_port = 172 ((struct sockaddr_in6 *) 173 (void *)res->ai_addr)->sin6_port; 174 sin6->sin6_scope_id = bip->index; 175 } else 176 #endif 177 { 178 free(bip); 179 continue; 180 } 181 TAILQ_INSERT_TAIL(list, bip, link); 182 count++; 183 } 184 freeifaddrs(ifp); 185 freeaddrinfo(res); 186 187 return count; 188 } 189 190 void 191 __rpc_freebroadifs(broadlist_t *list) 192 { 193 struct broadif *bip, *next; 194 195 bip = TAILQ_FIRST(list); 196 197 while (bip != NULL) { 198 next = TAILQ_NEXT(bip, link); 199 free(bip); 200 bip = next; 201 } 202 } 203 204 int 205 /*ARGSUSED*/ 206 __rpc_broadenable(int af, int s, struct broadif *bip) 207 { 208 int o = 1; 209 210 #if 0 211 if (af == AF_INET6) { 212 fprintf(stderr, "set v6 multicast if to %d\n", bip->index); 213 if (_setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_IF, &bip->index, 214 sizeof bip->index) < 0) 215 return -1; 216 } else 217 #endif 218 if (_setsockopt(s, SOL_SOCKET, SO_BROADCAST, &o, sizeof o) < 0) 219 return -1; 220 221 return 0; 222 } 223 224 225 enum clnt_stat 226 rpc_broadcast_exp(prog, vers, proc, xargs, argsp, xresults, resultsp, 227 eachresult, inittime, waittime, nettype) 228 rpcprog_t prog; /* program number */ 229 rpcvers_t vers; /* version number */ 230 rpcproc_t proc; /* procedure number */ 231 xdrproc_t xargs; /* xdr routine for args */ 232 caddr_t argsp; /* pointer to args */ 233 xdrproc_t xresults; /* xdr routine for results */ 234 caddr_t resultsp; /* pointer to results */ 235 resultproc_t eachresult; /* call with each result obtained */ 236 int inittime; /* how long to wait initially */ 237 int waittime; /* maximum time to wait */ 238 const char *nettype; /* transport type */ 239 { 240 enum clnt_stat stat = RPC_SUCCESS; /* Return status */ 241 XDR xdr_stream; /* XDR stream */ 242 XDR *xdrs = &xdr_stream; 243 struct rpc_msg msg; /* RPC message */ 244 struct timeval t; 245 char *outbuf = NULL; /* Broadcast msg buffer */ 246 char *inbuf = NULL; /* Reply buf */ 247 int inlen; 248 u_int maxbufsize = 0; 249 AUTH *sys_auth = authunix_create_default(); 250 int i; 251 void *handle; 252 char uaddress[1024]; /* A self imposed limit */ 253 char *uaddrp = uaddress; 254 int pmap_reply_flag; /* reply recvd from PORTMAP */ 255 /* An array of all the suitable broadcast transports */ 256 struct { 257 int fd; /* File descriptor */ 258 int af; 259 int proto; 260 struct netconfig *nconf; /* Netconfig structure */ 261 u_int asize; /* Size of the addr buf */ 262 u_int dsize; /* Size of the data buf */ 263 struct sockaddr_storage raddr; /* Remote address */ 264 broadlist_t nal; 265 } fdlist[MAXBCAST]; 266 struct pollfd pfd[MAXBCAST]; 267 size_t fdlistno = 0; 268 struct r_rpcb_rmtcallargs barg; /* Remote arguments */ 269 struct r_rpcb_rmtcallres bres; /* Remote results */ 270 size_t outlen; 271 struct netconfig *nconf; 272 int msec; 273 int pollretval; 274 int fds_found; 275 276 #ifdef PORTMAP 277 size_t outlen_pmap = 0; 278 u_long port; /* Remote port number */ 279 int pmap_flag = 0; /* UDP exists ? */ 280 char *outbuf_pmap = NULL; 281 struct rmtcallargs barg_pmap; /* Remote arguments */ 282 struct rmtcallres bres_pmap; /* Remote results */ 283 u_int udpbufsz = 0; 284 #endif /* PORTMAP */ 285 286 if (sys_auth == NULL) { 287 return (RPC_SYSTEMERROR); 288 } 289 /* 290 * initialization: create a fd, a broadcast address, and send the 291 * request on the broadcast transport. 292 * Listen on all of them and on replies, call the user supplied 293 * function. 294 */ 295 296 if (nettype == NULL) 297 nettype = "datagram_n"; 298 if ((handle = __rpc_setconf(nettype)) == NULL) { 299 AUTH_DESTROY(sys_auth); 300 return (RPC_UNKNOWNPROTO); 301 } 302 while ((nconf = __rpc_getconf(handle)) != NULL) { 303 int fd; 304 struct __rpc_sockinfo si; 305 306 if (nconf->nc_semantics != NC_TPI_CLTS) 307 continue; 308 if (fdlistno >= MAXBCAST) 309 break; /* No more slots available */ 310 if (!__rpc_nconf2sockinfo(nconf, &si)) 311 continue; 312 313 TAILQ_INIT(&fdlist[fdlistno].nal); 314 if (__rpc_getbroadifs(si.si_af, si.si_proto, si.si_socktype, 315 &fdlist[fdlistno].nal) == 0) 316 continue; 317 318 fd = _socket(si.si_af, si.si_socktype, si.si_proto); 319 if (fd < 0) { 320 stat = RPC_CANTSEND; 321 continue; 322 } 323 fdlist[fdlistno].af = si.si_af; 324 fdlist[fdlistno].proto = si.si_proto; 325 fdlist[fdlistno].fd = fd; 326 fdlist[fdlistno].nconf = nconf; 327 fdlist[fdlistno].asize = __rpc_get_a_size(si.si_af); 328 pfd[fdlistno].events = POLLIN | POLLPRI | 329 POLLRDNORM | POLLRDBAND; 330 pfd[fdlistno].fd = fdlist[fdlistno].fd = fd; 331 fdlist[fdlistno].dsize = __rpc_get_t_size(si.si_af, si.si_proto, 332 0); 333 334 if (maxbufsize <= fdlist[fdlistno].dsize) 335 maxbufsize = fdlist[fdlistno].dsize; 336 337 #ifdef PORTMAP 338 if (si.si_af == AF_INET && si.si_proto == IPPROTO_UDP) { 339 udpbufsz = fdlist[fdlistno].dsize; 340 if ((outbuf_pmap = malloc(udpbufsz)) == NULL) { 341 _close(fd); 342 stat = RPC_SYSTEMERROR; 343 goto done_broad; 344 } 345 pmap_flag = 1; 346 } 347 #endif /* PORTMAP */ 348 fdlistno++; 349 } 350 351 if (fdlistno == 0) { 352 if (stat == RPC_SUCCESS) 353 stat = RPC_UNKNOWNPROTO; 354 goto done_broad; 355 } 356 if (maxbufsize == 0) { 357 if (stat == RPC_SUCCESS) 358 stat = RPC_CANTSEND; 359 goto done_broad; 360 } 361 inbuf = malloc(maxbufsize); 362 outbuf = malloc(maxbufsize); 363 if ((inbuf == NULL) || (outbuf == NULL)) { 364 stat = RPC_SYSTEMERROR; 365 goto done_broad; 366 } 367 368 /* Serialize all the arguments which have to be sent */ 369 gettimeofday(&t, NULL); 370 msg.rm_xid = __RPC_GETXID(&t); 371 msg.rm_direction = CALL; 372 msg.rm_call.cb_rpcvers = RPC_MSG_VERSION; 373 msg.rm_call.cb_prog = RPCBPROG; 374 msg.rm_call.cb_vers = RPCBVERS; 375 msg.rm_call.cb_proc = RPCBPROC_CALLIT; 376 barg.prog = prog; 377 barg.vers = vers; 378 barg.proc = proc; 379 barg.args.args_val = argsp; 380 barg.xdr_args = xargs; 381 bres.addr = uaddrp; 382 bres.results.results_val = resultsp; 383 bres.xdr_res = xresults; 384 msg.rm_call.cb_cred = sys_auth->ah_cred; 385 msg.rm_call.cb_verf = sys_auth->ah_verf; 386 xdrmem_create(xdrs, outbuf, maxbufsize, XDR_ENCODE); 387 if ((!xdr_callmsg(xdrs, &msg)) || 388 (!xdr_rpcb_rmtcallargs(xdrs, 389 (struct rpcb_rmtcallargs *)(void *)&barg))) { 390 stat = RPC_CANTENCODEARGS; 391 goto done_broad; 392 } 393 outlen = xdr_getpos(xdrs); 394 xdr_destroy(xdrs); 395 396 #ifdef PORTMAP 397 /* Prepare the packet for version 2 PORTMAP */ 398 if (pmap_flag) { 399 msg.rm_xid++; /* One way to distinguish */ 400 msg.rm_call.cb_prog = PMAPPROG; 401 msg.rm_call.cb_vers = PMAPVERS; 402 msg.rm_call.cb_proc = PMAPPROC_CALLIT; 403 barg_pmap.prog = prog; 404 barg_pmap.vers = vers; 405 barg_pmap.proc = proc; 406 barg_pmap.args_ptr = argsp; 407 barg_pmap.xdr_args = xargs; 408 bres_pmap.port_ptr = &port; 409 bres_pmap.xdr_results = xresults; 410 bres_pmap.results_ptr = resultsp; 411 xdrmem_create(xdrs, outbuf_pmap, udpbufsz, XDR_ENCODE); 412 if ((! xdr_callmsg(xdrs, &msg)) || 413 (! xdr_rmtcall_args(xdrs, &barg_pmap))) { 414 stat = RPC_CANTENCODEARGS; 415 goto done_broad; 416 } 417 outlen_pmap = xdr_getpos(xdrs); 418 xdr_destroy(xdrs); 419 } 420 #endif /* PORTMAP */ 421 422 /* 423 * Basic loop: broadcast the packets to transports which 424 * support data packets of size such that one can encode 425 * all the arguments. 426 * Wait a while for response(s). 427 * The response timeout grows larger per iteration. 428 */ 429 for (msec = inittime; msec <= waittime; msec += msec) { 430 struct broadif *bip; 431 432 /* Broadcast all the packets now */ 433 for (i = 0; i < fdlistno; i++) { 434 if (fdlist[i].dsize < outlen) { 435 stat = RPC_CANTSEND; 436 continue; 437 } 438 for (bip = TAILQ_FIRST(&fdlist[i].nal); bip != NULL; 439 bip = TAILQ_NEXT(bip, link)) { 440 void *addr; 441 442 addr = &bip->broadaddr; 443 444 __rpc_broadenable(fdlist[i].af, fdlist[i].fd, 445 bip); 446 447 /* 448 * Only use version 3 if lowvers is not set 449 */ 450 451 if (!__rpc_lowvers) 452 if (_sendto(fdlist[i].fd, outbuf, 453 outlen, 0, (struct sockaddr*)addr, 454 (size_t)fdlist[i].asize) != 455 outlen) { 456 #ifdef RPC_DEBUG 457 perror("sendto"); 458 #endif 459 warnx("clnt_bcast: cannot send" 460 "broadcast packet"); 461 stat = RPC_CANTSEND; 462 continue; 463 }; 464 #ifdef RPC_DEBUG 465 if (!__rpc_lowvers) 466 fprintf(stderr, "Broadcast packet sent " 467 "for %s\n", 468 fdlist[i].nconf->nc_netid); 469 #endif 470 #ifdef PORTMAP 471 /* 472 * Send the version 2 packet also 473 * for UDP/IP 474 */ 475 if (pmap_flag && 476 fdlist[i].proto == IPPROTO_UDP) { 477 if (_sendto(fdlist[i].fd, outbuf_pmap, 478 outlen_pmap, 0, addr, 479 (size_t)fdlist[i].asize) != 480 outlen_pmap) { 481 warnx("clnt_bcast: " 482 "Cannot send broadcast packet"); 483 stat = RPC_CANTSEND; 484 continue; 485 } 486 } 487 #ifdef RPC_DEBUG 488 fprintf(stderr, "PMAP Broadcast packet " 489 "sent for %s\n", 490 fdlist[i].nconf->nc_netid); 491 #endif 492 #endif /* PORTMAP */ 493 } 494 /* End for sending all packets on this transport */ 495 } /* End for sending on all transports */ 496 497 if (eachresult == NULL) { 498 stat = RPC_SUCCESS; 499 goto done_broad; 500 } 501 502 /* 503 * Get all the replies from these broadcast requests 504 */ 505 recv_again: 506 507 switch (pollretval = _poll(pfd, fdlistno, msec)) { 508 case 0: /* timed out */ 509 stat = RPC_TIMEDOUT; 510 continue; 511 case -1: /* some kind of error - we ignore it */ 512 goto recv_again; 513 } /* end of poll results switch */ 514 515 for (i = fds_found = 0; 516 i < fdlistno && fds_found < pollretval; i++) { 517 bool_t done = FALSE; 518 519 if (pfd[i].revents == 0) 520 continue; 521 else if (pfd[i].revents & POLLNVAL) { 522 /* 523 * Something bad has happened to this descri- 524 * ptor. We can cause _poll() to ignore 525 * it simply by using a negative fd. We do that 526 * rather than compacting the pfd[] and fdlist[] 527 * arrays. 528 */ 529 pfd[i].fd = -1; 530 fds_found++; 531 continue; 532 } else 533 fds_found++; 534 #ifdef RPC_DEBUG 535 fprintf(stderr, "response for %s\n", 536 fdlist[i].nconf->nc_netid); 537 #endif 538 try_again: 539 inlen = _recvfrom(fdlist[i].fd, inbuf, fdlist[i].dsize, 540 0, (struct sockaddr *)(void *)&fdlist[i].raddr, 541 &fdlist[i].asize); 542 if (inlen < 0) { 543 if (errno == EINTR) 544 goto try_again; 545 warnx("clnt_bcast: Cannot receive reply to " 546 "broadcast"); 547 stat = RPC_CANTRECV; 548 continue; 549 } 550 if (inlen < sizeof (u_int32_t)) 551 continue; /* Drop that and go ahead */ 552 /* 553 * see if reply transaction id matches sent id. 554 * If so, decode the results. If return id is xid + 1 555 * it was a PORTMAP reply 556 */ 557 if (*((u_int32_t *)(void *)(inbuf)) == 558 *((u_int32_t *)(void *)(outbuf))) { 559 pmap_reply_flag = 0; 560 msg.acpted_rply.ar_verf = _null_auth; 561 msg.acpted_rply.ar_results.where = 562 (caddr_t)(void *)&bres; 563 msg.acpted_rply.ar_results.proc = 564 (xdrproc_t)xdr_rpcb_rmtcallres; 565 #ifdef PORTMAP 566 } else if (pmap_flag && 567 *((u_int32_t *)(void *)(inbuf)) == 568 *((u_int32_t *)(void *)(outbuf_pmap))) { 569 pmap_reply_flag = 1; 570 msg.acpted_rply.ar_verf = _null_auth; 571 msg.acpted_rply.ar_results.where = 572 (caddr_t)(void *)&bres_pmap; 573 msg.acpted_rply.ar_results.proc = 574 (xdrproc_t)xdr_rmtcallres; 575 #endif /* PORTMAP */ 576 } else 577 continue; 578 xdrmem_create(xdrs, inbuf, (u_int)inlen, XDR_DECODE); 579 if (xdr_replymsg(xdrs, &msg)) { 580 if ((msg.rm_reply.rp_stat == MSG_ACCEPTED) && 581 (msg.acpted_rply.ar_stat == SUCCESS)) { 582 struct netbuf taddr, *np; 583 struct sockaddr_in *sin; 584 585 #ifdef PORTMAP 586 if (pmap_flag && pmap_reply_flag) { 587 sin = (struct sockaddr_in *) 588 (void *)&fdlist[i].raddr; 589 sin->sin_port = 590 htons((u_short)port); 591 taddr.len = taddr.maxlen = 592 fdlist[i].raddr.ss_len; 593 taddr.buf = &fdlist[i].raddr; 594 done = (*eachresult)(resultsp, 595 &taddr, fdlist[i].nconf); 596 } else { 597 #endif /* PORTMAP */ 598 #ifdef RPC_DEBUG 599 fprintf(stderr, "uaddr %s\n", 600 uaddrp); 601 #endif 602 np = uaddr2taddr( 603 fdlist[i].nconf, uaddrp); 604 done = (*eachresult)(resultsp, 605 np, fdlist[i].nconf); 606 free(np); 607 #ifdef PORTMAP 608 } 609 #endif /* PORTMAP */ 610 } 611 /* otherwise, we just ignore the errors ... */ 612 } 613 /* else some kind of deserialization problem ... */ 614 615 xdrs->x_op = XDR_FREE; 616 msg.acpted_rply.ar_results.proc = (xdrproc_t) xdr_void; 617 xdr_replymsg(xdrs, &msg); 618 (*xresults)(xdrs, resultsp); 619 XDR_DESTROY(xdrs); 620 if (done) { 621 stat = RPC_SUCCESS; 622 goto done_broad; 623 } else { 624 goto recv_again; 625 } 626 } /* The recv for loop */ 627 } /* The giant for loop */ 628 629 done_broad: 630 if (inbuf) 631 free(inbuf); 632 if (outbuf) 633 free(outbuf); 634 #ifdef PORTMAP 635 if (outbuf_pmap) 636 free(outbuf_pmap); 637 #endif /* PORTMAP */ 638 for (i = 0; i < fdlistno; i++) { 639 _close(fdlist[i].fd); 640 __rpc_freebroadifs(&fdlist[i].nal); 641 } 642 AUTH_DESTROY(sys_auth); 643 __rpc_endconf(handle); 644 645 return (stat); 646 } 647 648 649 enum clnt_stat 650 rpc_broadcast(prog, vers, proc, xargs, argsp, xresults, resultsp, 651 eachresult, nettype) 652 rpcprog_t prog; /* program number */ 653 rpcvers_t vers; /* version number */ 654 rpcproc_t proc; /* procedure number */ 655 xdrproc_t xargs; /* xdr routine for args */ 656 caddr_t argsp; /* pointer to args */ 657 xdrproc_t xresults; /* xdr routine for results */ 658 caddr_t resultsp; /* pointer to results */ 659 resultproc_t eachresult; /* call with each result obtained */ 660 const char *nettype; /* transport type */ 661 { 662 enum clnt_stat dummy; 663 664 dummy = rpc_broadcast_exp(prog, vers, proc, xargs, argsp, 665 xresults, resultsp, eachresult, 666 INITTIME, WAITTIME, nettype); 667 return (dummy); 668 } 669