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