1 /* $NetBSD: clnt_bcast.c,v 1.2 2000/06/03 14:55:43 fvdl Exp $ */ 2 3 /* 4 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for 5 * unrestricted use provided that this legend is included on all tape 6 * media and as a part of the software program in whole or part. Users 7 * may copy or modify Sun RPC without charge, but are not authorized 8 * to license or distribute it to anyone else except as part of a product or 9 * program developed by the user. 10 * 11 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE 12 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR 13 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. 14 * 15 * Sun RPC is provided with no support and without any obligation on the 16 * part of Sun Microsystems, Inc. to assist in its use, correction, 17 * modification or enhancement. 18 * 19 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE 20 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC 21 * OR ANY PART THEREOF. 22 * 23 * In no event will Sun Microsystems, Inc. be liable for any lost revenue 24 * or profits or other special, indirect and consequential damages, even if 25 * Sun has been advised of the possibility of such damages. 26 * 27 * Sun Microsystems, Inc. 28 * 2550 Garcia Avenue 29 * Mountain View, California 94043 30 */ 31 /* 32 * Copyright (c) 1986-1991 by Sun Microsystems Inc. 33 */ 34 35 /* #ident "@(#)clnt_bcast.c 1.18 94/05/03 SMI" */ 36 37 #if 0 38 #if !defined(lint) && defined(SCCSIDS) 39 static char sccsid[] = "@(#)clnt_bcast.c 1.15 89/04/21 Copyr 1988 Sun Micro"; 40 #endif 41 #endif 42 43 44 /* 45 * clnt_bcast.c 46 * Client interface to broadcast service. 47 * 48 * Copyright (C) 1988, Sun Microsystems, Inc. 49 * 50 * The following is kludged-up support for simple rpc broadcasts. 51 * Someday a large, complicated system will replace these routines. 52 */ 53 54 #include "namespace.h" 55 #include <sys/types.h> 56 #include <sys/socket.h> 57 #include <sys/queue.h> 58 #include <net/if.h> 59 #include <netinet/in.h> 60 #include <ifaddrs.h> 61 #include <sys/poll.h> 62 #include <rpc/rpc.h> 63 #ifdef PORTMAP 64 #include <rpc/pmap_prot.h> 65 #include <rpc/pmap_clnt.h> 66 #include <rpc/pmap_rmt.h> 67 #endif 68 #include <arpa/inet.h> 69 #ifdef RPC_DEBUG 70 #include <stdio.h> 71 #endif 72 #include <errno.h> 73 #include <stdlib.h> 74 #include <unistd.h> 75 #include <netdb.h> 76 #include <err.h> 77 #include <string.h> 78 79 #include "rpc_com.h" 80 81 #define MAXBCAST 20 /* Max no of broadcasting transports */ 82 #define INITTIME 4000 /* Time to wait initially */ 83 #define WAITTIME 8000 /* Maximum time to wait */ 84 85 /* 86 * If nettype is NULL, it broadcasts on all the available 87 * datagram_n transports. May potentially lead to broadacst storms 88 * and hence should be used with caution, care and courage. 89 * 90 * The current parameter xdr packet size is limited by the max tsdu 91 * size of the transport. If the max tsdu size of any transport is 92 * smaller than the parameter xdr packet, then broadcast is not 93 * sent on that transport. 94 * 95 * Also, the packet size should be less the packet size of 96 * the data link layer (for ethernet it is 1400 bytes). There is 97 * no easy way to find out the max size of the data link layer and 98 * we are assuming that the args would be smaller than that. 99 * 100 * The result size has to be smaller than the transport tsdu size. 101 * 102 * If PORTMAP has been defined, we send two packets for UDP, one for 103 * rpcbind and one for portmap. For those machines which support 104 * both rpcbind and portmap, it will cause them to reply twice, and 105 * also here it will get two responses ... inefficient and clumsy. 106 */ 107 108 #ifdef __weak_alias 109 __weak_alias(rpc_broadcast_exp,_rpc_broadcast_exp) 110 __weak_alias(rpc_broadcast,_rpc_broadcast) 111 #endif 112 113 struct broadif { 114 int index; 115 struct sockaddr_storage broadaddr; 116 TAILQ_ENTRY(broadif) link; 117 }; 118 119 typedef TAILQ_HEAD(, broadif) broadlist_t; 120 121 int __rpc_getbroadifs __P((int, int, int, broadlist_t *)); 122 void __rpc_freebroadifs __P((broadlist_t *)); 123 int __rpc_broadenable __P((int, int, struct broadif *)); 124 125 int __rpc_lowvers = 0; 126 127 int 128 __rpc_getbroadifs(int af, int proto, int socktype, broadlist_t *list) 129 { 130 int count = 0; 131 struct broadif *bip; 132 struct ifaddrs *ifap, *ifp; 133 #ifdef INET6 134 struct sockaddr_in6 *sin6; 135 #endif 136 struct sockaddr_in *sin; 137 struct addrinfo hints, *res; 138 139 if (getifaddrs(&ifp) < 0) 140 return 0; 141 142 memset(&hints, 0, sizeof hints); 143 144 hints.ai_family = af; 145 hints.ai_protocol = proto; 146 hints.ai_socktype = socktype; 147 148 if (getaddrinfo(NULL, "sunrpc", &hints, &res) != 0) 149 return 0; 150 151 for (ifap = ifp; ifap != NULL; ifap = ifap->ifa_next) { 152 if (ifap->ifa_addr->sa_family != af || 153 !(ifap->ifa_flags & IFF_UP)) 154 continue; 155 #ifdef INET6 156 if ((af == AF_INET6 && !(ifap->ifa_flags & IFF_MULTICAST)) || 157 !(ifap->ifa_flags & IFF_BROADCAST)) 158 continue; 159 #endif 160 bip = (struct broadif *)malloc(sizeof *bip); 161 if (bip == NULL) 162 break; 163 bip->index = if_nametoindex(ifap->ifa_name); 164 #ifdef INET6 165 if (af != AF_INET6 && (ifap->ifa_flags & IFF_BROADCAST)) { 166 #else 167 if (ifap->ifa_flags & IFF_BROADCAST) { 168 #endif 169 memcpy(&bip->broadaddr, ifap->ifa_broadaddr, 170 ifap->ifa_broadaddr->sa_len); 171 sin = (struct sockaddr_in *)&bip->broadaddr; 172 sin->sin_port = 173 ((struct sockaddr_in *)res->ai_addr)->sin_port; 174 #ifdef INET6 175 } else if (af == AF_INET6) { 176 sin6 = (struct sockaddr_in6 *)&bip->broadaddr; 177 inet_pton(af, RPCB_MULTICAST_ADDR, &sin6->sin6_addr); 178 sin6->sin6_family = af; 179 sin6->sin6_len = sizeof *sin6; 180 sin6->sin6_port = 181 ((struct sockaddr_in6 *)res->ai_addr)->sin6_port; 182 sin6->sin6_scope_id = bip->index; 183 #endif 184 } 185 TAILQ_INSERT_TAIL(list, bip, link); 186 count++; 187 } 188 freeifaddrs(ifp); 189 freeaddrinfo(res); 190 191 return count; 192 } 193 194 void 195 __rpc_freebroadifs(broadlist_t *list) 196 { 197 struct broadif *bip, *next; 198 199 bip = TAILQ_FIRST(list); 200 201 while (bip != NULL) { 202 next = TAILQ_NEXT(bip, link); 203 free(bip); 204 bip = next; 205 } 206 } 207 208 int 209 __rpc_broadenable(int af, int s, struct broadif *bip) 210 { 211 int o = 1; 212 213 #if 0 214 if (af == AF_INET6) { 215 fprintf(stderr, "set v6 multicast if to %d\n", bip->index); 216 if (setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_IF, &bip->index, 217 sizeof bip->index) < 0) 218 return -1; 219 } else 220 #endif 221 if (setsockopt(s, SOL_SOCKET, SO_BROADCAST, &o, sizeof o) < 0) 222 return -1; 223 224 return 0; 225 } 226 227 228 enum clnt_stat 229 rpc_broadcast_exp(prog, vers, proc, xargs, argsp, xresults, resultsp, 230 eachresult, inittime, waittime, nettype) 231 rpcprog_t prog; /* program number */ 232 rpcvers_t vers; /* version number */ 233 rpcproc_t proc; /* procedure number */ 234 xdrproc_t xargs; /* xdr routine for args */ 235 caddr_t argsp; /* pointer to args */ 236 xdrproc_t xresults; /* xdr routine for results */ 237 caddr_t resultsp; /* pointer to results */ 238 resultproc_t eachresult; /* call with each result obtained */ 239 int inittime; /* how long to wait initially */ 240 int waittime; /* maximum time to wait */ 241 const char *nettype; /* transport type */ 242 { 243 enum clnt_stat stat = RPC_SUCCESS; /* Return status */ 244 XDR xdr_stream; /* XDR stream */ 245 register XDR *xdrs = &xdr_stream; 246 struct rpc_msg msg; /* RPC message */ 247 struct timeval t; 248 char *outbuf = NULL; /* Broadcast msg buffer */ 249 char *inbuf = NULL; /* Reply buf */ 250 int inlen; 251 u_int maxbufsize = 0; 252 AUTH *sys_auth = authunix_create_default(); 253 int i; 254 void *handle; 255 char uaddress[1024]; /* A self imposed limit */ 256 char *uaddrp = uaddress; 257 int pmap_reply_flag; /* reply recvd from PORTMAP */ 258 /* An array of all the suitable broadcast transports */ 259 struct { 260 int fd; /* File descriptor */ 261 int af; 262 int proto; 263 struct netconfig *nconf; /* Netconfig structure */ 264 u_int asize; /* Size of the addr buf */ 265 u_int dsize; /* Size of the data buf */ 266 struct sockaddr_storage raddr; /* Remote address */ 267 broadlist_t nal; 268 } fdlist[MAXBCAST]; 269 struct pollfd pfd[MAXBCAST]; 270 register int fdlistno = 0; 271 struct r_rpcb_rmtcallargs barg; /* Remote arguments */ 272 struct r_rpcb_rmtcallres bres; /* Remote results */ 273 int outlen, outlen_pmap; 274 struct netconfig *nconf; 275 int msec; 276 int pollretval; 277 int fds_found; 278 279 #ifdef PORTMAP 280 u_long port; /* Remote port number */ 281 int pmap_flag = 0; /* UDP exists ? */ 282 char *outbuf_pmap = NULL; 283 struct rmtcallargs barg_pmap; /* Remote arguments */ 284 struct rmtcallres bres_pmap; /* Remote results */ 285 u_int udpbufsz = 0; 286 #endif /* PORTMAP */ 287 288 if (sys_auth == (AUTH *)NULL) { 289 return (RPC_SYSTEMERROR); 290 } 291 /* 292 * initialization: create a fd, a broadcast address, and send the 293 * request on the broadcast transport. 294 * Listen on all of them and on replies, call the user supplied 295 * function. 296 */ 297 298 if (nettype == NULL) 299 nettype = "datagram_n"; 300 if ((handle = __rpc_setconf((char *)nettype)) == NULL) { 301 return (RPC_UNKNOWNPROTO); 302 } 303 while ((nconf = __rpc_getconf(handle))) { 304 int fd; 305 struct __rpc_sockinfo si; 306 307 if (nconf->nc_semantics != NC_TPI_CLTS) 308 continue; 309 if (fdlistno >= MAXBCAST) 310 break; /* No more slots available */ 311 if (!__rpc_nconf2sockinfo(nconf, &si)) 312 continue; 313 314 TAILQ_INIT(&fdlist[fdlistno].nal); 315 if (__rpc_getbroadifs(si.si_af, si.si_proto, si.si_socktype, 316 &fdlist[fdlistno].nal) == 0) 317 continue; 318 319 fd = socket(si.si_af, si.si_socktype, si.si_proto); 320 if (fd < 0) { 321 stat = RPC_CANTSEND; 322 continue; 323 } 324 fdlist[fdlistno].af = si.si_af; 325 fdlist[fdlistno].proto = si.si_proto; 326 fdlist[fdlistno].fd = fd; 327 fdlist[fdlistno].nconf = nconf; 328 fdlist[fdlistno].asize = __rpc_get_a_size(si.si_af); 329 pfd[fdlistno].events = POLLIN | POLLPRI | 330 POLLRDNORM | POLLRDBAND; 331 pfd[fdlistno].fd = fdlist[fdlistno].fd = fd; 332 fdlist[fdlistno].dsize = __rpc_get_t_size(si.si_af, si.si_proto, 333 0); 334 335 if (maxbufsize <= fdlist[fdlistno].dsize) 336 maxbufsize = fdlist[fdlistno].dsize; 337 338 #ifdef PORTMAP 339 if (si.si_af == AF_INET && si.si_proto == IPPROTO_UDP) { 340 udpbufsz = fdlist[fdlistno].dsize; 341 if ((outbuf_pmap = malloc(udpbufsz)) == NULL) { 342 close(fd); 343 stat = RPC_SYSTEMERROR; 344 goto done_broad; 345 } 346 pmap_flag = 1; 347 } 348 #endif 349 fdlistno++; 350 } 351 352 if (fdlistno == 0) { 353 if (stat == RPC_SUCCESS) 354 stat = RPC_UNKNOWNPROTO; 355 goto done_broad; 356 } 357 if (maxbufsize == 0) { 358 if (stat == RPC_SUCCESS) 359 stat = RPC_CANTSEND; 360 goto done_broad; 361 } 362 inbuf = malloc(maxbufsize); 363 outbuf = malloc(maxbufsize); 364 if ((inbuf == NULL) || (outbuf == NULL)) { 365 stat = RPC_SYSTEMERROR; 366 goto done_broad; 367 } 368 369 /* Serialize all the arguments which have to be sent */ 370 (void) gettimeofday(&t, (struct timezone *)0); 371 msg.rm_xid = getpid() ^ t.tv_sec ^ t.tv_usec; 372 msg.rm_direction = CALL; 373 msg.rm_call.cb_rpcvers = RPC_MSG_VERSION; 374 msg.rm_call.cb_prog = RPCBPROG; 375 msg.rm_call.cb_vers = RPCBVERS; 376 msg.rm_call.cb_proc = RPCBPROC_CALLIT; 377 barg.prog = prog; 378 barg.vers = vers; 379 barg.proc = proc; 380 barg.args.args_val = argsp; 381 barg.xdr_args = xargs; 382 bres.addr = uaddrp; 383 bres.results.results_val = resultsp; 384 bres.xdr_res = xresults; 385 msg.rm_call.cb_cred = sys_auth->ah_cred; 386 msg.rm_call.cb_verf = sys_auth->ah_verf; 387 xdrmem_create(xdrs, outbuf, maxbufsize, XDR_ENCODE); 388 if ((!xdr_callmsg(xdrs, &msg)) || 389 (!xdr_rpcb_rmtcallargs(xdrs, (struct rpcb_rmtcallargs *)&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 fdlist[i].asize) != 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 (fdlist[i].proto == IPPROTO_UDP) { 475 if (sendto(fdlist[i].fd, outbuf_pmap, 476 outlen_pmap, 0, addr, 477 fdlist[i].asize) != 478 outlen_pmap) { 479 warnx("clnt_bcast: " 480 "Cannot send broadcast packet"); 481 stat = RPC_CANTSEND; 482 continue; 483 } 484 } 485 #ifdef RPC_DEBUG 486 fprintf(stderr, "PMAP Broadcast packet " 487 "sent for %s\n", 488 fdlist[i].nconf->nc_netid); 489 #endif 490 #endif /* PORTMAP */ 491 } 492 /* End for sending all packets on this transport */ 493 } /* End for sending on all transports */ 494 495 if (eachresult == NULL) { 496 stat = RPC_SUCCESS; 497 goto done_broad; 498 } 499 500 /* 501 * Get all the replies from these broadcast requests 502 */ 503 recv_again: 504 505 switch (pollretval = poll(pfd, fdlistno, msec)) { 506 case 0: /* timed out */ 507 stat = RPC_TIMEDOUT; 508 continue; 509 case -1: /* some kind of error - we ignore it */ 510 goto recv_again; 511 } /* end of poll results switch */ 512 513 for (i = fds_found = 0; 514 i < fdlistno && fds_found < pollretval; i++) { 515 bool_t done = FALSE; 516 517 if (pfd[i].revents == 0) 518 continue; 519 else if (pfd[i].revents & POLLNVAL) { 520 /* 521 * Something bad has happened to this descri- 522 * ptor. We can cause poll() to ignore 523 * it simply by using a negative fd. We do that 524 * rather than compacting the pfd[] and fdlist[] 525 * arrays. 526 */ 527 pfd[i].fd = -1; 528 fds_found++; 529 continue; 530 } else 531 fds_found++; 532 #ifdef RPC_DEBUG 533 fprintf(stderr, "response for %s\n", 534 fdlist[i].nconf->nc_netid); 535 #endif 536 try_again: 537 inlen = recvfrom(fdlist[i].fd, inbuf, fdlist[i].dsize, 538 0, (struct sockaddr *)&fdlist[i].raddr, 539 &fdlist[i].asize); 540 if (inlen < 0) { 541 if (errno == EINTR) 542 goto try_again; 543 warnx("clnt_bcast: Cannot receive reply to " 544 "broadcast"); 545 stat = RPC_CANTRECV; 546 continue; 547 } 548 if (inlen < sizeof (u_int32_t)) 549 continue; /* Drop that and go ahead */ 550 /* 551 * see if reply transaction id matches sent id. 552 * If so, decode the results. If return id is xid + 1 553 * it was a PORTMAP reply 554 */ 555 if (*((u_int32_t *)(inbuf)) == *((u_int32_t *)(outbuf))) { 556 pmap_reply_flag = 0; 557 msg.acpted_rply.ar_verf = _null_auth; 558 msg.acpted_rply.ar_results.where = 559 (caddr_t)&bres; 560 msg.acpted_rply.ar_results.proc = 561 (xdrproc_t)xdr_rpcb_rmtcallres; 562 #ifdef PORTMAP 563 } else if (pmap_flag && 564 *((u_int32_t *)(inbuf)) == 565 *((u_int32_t *)(outbuf_pmap))) { 566 pmap_reply_flag = 1; 567 msg.acpted_rply.ar_verf = _null_auth; 568 msg.acpted_rply.ar_results.where = 569 (caddr_t)&bres_pmap; 570 msg.acpted_rply.ar_results.proc = 571 (xdrproc_t)xdr_rmtcallres; 572 #endif /* PORTMAP */ 573 } else 574 continue; 575 xdrmem_create(xdrs, inbuf, (u_int)inlen, XDR_DECODE); 576 if (xdr_replymsg(xdrs, &msg)) { 577 if ((msg.rm_reply.rp_stat == MSG_ACCEPTED) && 578 (msg.acpted_rply.ar_stat == SUCCESS)) { 579 struct netbuf taddr, *np; 580 struct sockaddr_in *sin; 581 582 #ifdef PORTMAP 583 if (pmap_flag && pmap_reply_flag) { 584 sin = (struct sockaddr_in *) 585 &fdlist[i].raddr; 586 sin->sin_port = 587 htons((u_short)port); 588 taddr.len = taddr.maxlen = 589 fdlist[i].raddr.ss_len; 590 taddr.buf = &fdlist[i].raddr; 591 done = (*eachresult)(resultsp, 592 &taddr, fdlist[i].nconf); 593 } else { 594 #endif 595 #ifdef RPC_DEBUG 596 fprintf(stderr, "uaddr %s\n", 597 uaddrp); 598 #endif 599 np = uaddr2taddr( 600 fdlist[i].nconf, uaddrp); 601 done = (*eachresult)(resultsp, 602 np, fdlist[i].nconf); 603 free(np); 604 #ifdef PORTMAP 605 } 606 #endif 607 } 608 /* otherwise, we just ignore the errors ... */ 609 } 610 /* else some kind of deserialization problem ... */ 611 612 xdrs->x_op = XDR_FREE; 613 msg.acpted_rply.ar_results.proc = (xdrproc_t) xdr_void; 614 (void) xdr_replymsg(xdrs, &msg); 615 (void) (*xresults)(xdrs, resultsp); 616 XDR_DESTROY(xdrs); 617 if (done) { 618 stat = RPC_SUCCESS; 619 goto done_broad; 620 } else { 621 goto recv_again; 622 } 623 } /* The recv for loop */ 624 } /* The giant for loop */ 625 626 done_broad: 627 if (inbuf) 628 (void) free(inbuf); 629 if (outbuf) 630 (void) free(outbuf); 631 #ifdef PORTMAP 632 if (outbuf_pmap) 633 (void) free(outbuf_pmap); 634 #endif 635 for (i = 0; i < fdlistno; i++) { 636 (void) close(fdlist[i].fd); 637 __rpc_freebroadifs(&fdlist[i].nal); 638 } 639 AUTH_DESTROY(sys_auth); 640 (void) __rpc_endconf(handle); 641 642 return (stat); 643 } 644 645 646 enum clnt_stat 647 rpc_broadcast(prog, vers, proc, xargs, argsp, xresults, resultsp, 648 eachresult, nettype) 649 rpcprog_t prog; /* program number */ 650 rpcvers_t vers; /* version number */ 651 rpcproc_t proc; /* procedure number */ 652 xdrproc_t xargs; /* xdr routine for args */ 653 caddr_t argsp; /* pointer to args */ 654 xdrproc_t xresults; /* xdr routine for results */ 655 caddr_t resultsp; /* pointer to results */ 656 resultproc_t eachresult; /* call with each result obtained */ 657 const char *nettype; /* transport type */ 658 { 659 enum clnt_stat dummy; 660 661 dummy = rpc_broadcast_exp(prog, vers, proc, xargs, argsp, 662 xresults, resultsp, eachresult, 663 INITTIME, WAITTIME, nettype); 664 return (dummy); 665 } 666