1 /* $NetBSD: clnt_bcast.c,v 1.3 2000/07/06 03:05:20 christos Exp $ */ 2 /* $FreeBSD$ */ 3 4 /* 5 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for 6 * unrestricted use provided that this legend is included on all tape 7 * media and as a part of the software program in whole or part. Users 8 * may copy or modify Sun RPC without charge, but are not authorized 9 * to license or distribute it to anyone else except as part of a product or 10 * program developed by the user. 11 * 12 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE 13 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR 14 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. 15 * 16 * Sun RPC is provided with no support and without any obligation on the 17 * part of Sun Microsystems, Inc. to assist in its use, correction, 18 * modification or enhancement. 19 * 20 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE 21 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC 22 * OR ANY PART THEREOF. 23 * 24 * In no event will Sun Microsystems, Inc. be liable for any lost revenue 25 * or profits or other special, indirect and consequential damages, even if 26 * Sun has been advised of the possibility of such damages. 27 * 28 * Sun Microsystems, Inc. 29 * 2550 Garcia Avenue 30 * Mountain View, California 94043 31 */ 32 /* 33 * Copyright (c) 1986-1991 by Sun Microsystems Inc. 34 */ 35 36 /* #ident "@(#)clnt_bcast.c 1.18 94/05/03 SMI" */ 37 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 42 43 /* 44 * clnt_bcast.c 45 * Client interface to broadcast service. 46 * 47 * Copyright (C) 1988, Sun Microsystems, Inc. 48 * 49 * The following is kludged-up support for simple rpc broadcasts. 50 * Someday a large, complicated system will replace these routines. 51 */ 52 53 #include "namespace.h" 54 #include <sys/types.h> 55 #include <sys/socket.h> 56 #include <sys/queue.h> 57 #include <net/if.h> 58 #include <netinet/in.h> 59 #include <ifaddrs.h> 60 #include <sys/poll.h> 61 #include <rpc/rpc.h> 62 #ifdef PORTMAP 63 #include <rpc/pmap_prot.h> 64 #include <rpc/pmap_clnt.h> 65 #include <rpc/pmap_rmt.h> 66 #endif /* PORTMAP */ 67 #include <rpc/nettype.h> 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 #include "un-namespace.h" 79 80 #include "rpc_com.h" 81 82 #define MAXBCAST 20 /* Max no of broadcasting transports */ 83 #define INITTIME 4000 /* Time to wait initially */ 84 #define WAITTIME 8000 /* Maximum time to wait */ 85 86 /* 87 * If nettype is NULL, it broadcasts on all the available 88 * datagram_n transports. May potentially lead to broadacst storms 89 * and hence should be used with caution, care and courage. 90 * 91 * The current parameter xdr packet size is limited by the max tsdu 92 * size of the transport. If the max tsdu size of any transport is 93 * smaller than the parameter xdr packet, then broadcast is not 94 * sent on that transport. 95 * 96 * Also, the packet size should be less the packet size of 97 * the data link layer (for ethernet it is 1400 bytes). There is 98 * no easy way to find out the max size of the data link layer and 99 * we are assuming that the args would be smaller than that. 100 * 101 * The result size has to be smaller than the transport tsdu size. 102 * 103 * If PORTMAP has been defined, we send two packets for UDP, one for 104 * rpcbind and one for portmap. For those machines which support 105 * both rpcbind and portmap, it will cause them to reply twice, and 106 * also here it will get two responses ... inefficient and clumsy. 107 */ 108 109 struct broadif { 110 int index; 111 struct sockaddr_storage broadaddr; 112 TAILQ_ENTRY(broadif) link; 113 }; 114 115 typedef TAILQ_HEAD(, broadif) broadlist_t; 116 117 int __rpc_getbroadifs __P((int, int, int, broadlist_t *)); 118 void __rpc_freebroadifs __P((broadlist_t *)); 119 int __rpc_broadenable __P((int, int, struct broadif *)); 120 121 int __rpc_lowvers = 0; 122 123 int 124 __rpc_getbroadifs(int af, int proto, int socktype, broadlist_t *list) 125 { 126 int count = 0; 127 struct broadif *bip; 128 struct ifaddrs *ifap, *ifp; 129 #ifdef INET6 130 struct sockaddr_in6 *sin6; 131 #endif 132 struct sockaddr_in *sin; 133 struct addrinfo hints, *res; 134 135 if (getifaddrs(&ifp) < 0) 136 return 0; 137 138 memset(&hints, 0, sizeof hints); 139 140 hints.ai_family = af; 141 hints.ai_protocol = proto; 142 hints.ai_socktype = socktype; 143 144 if (getaddrinfo(NULL, "sunrpc", &hints, &res) != 0) 145 return 0; 146 147 for (ifap = ifp; ifap != NULL; ifap = ifap->ifa_next) { 148 if (ifap->ifa_addr->sa_family != af || 149 !(ifap->ifa_flags & IFF_UP)) 150 continue; 151 #ifdef INET6 152 if ((af == AF_INET6 && !(ifap->ifa_flags & IFF_MULTICAST)) || 153 !(ifap->ifa_flags & IFF_BROADCAST)) 154 continue; 155 #endif 156 bip = (struct broadif *)malloc(sizeof *bip); 157 if (bip == NULL) 158 break; 159 bip->index = if_nametoindex(ifap->ifa_name); 160 #ifdef INET6 161 if (af != AF_INET6 && (ifap->ifa_flags & IFF_BROADCAST)) { 162 #else 163 if (ifap->ifa_flags & IFF_BROADCAST) { 164 #endif 165 memcpy(&bip->broadaddr, ifap->ifa_broadaddr, 166 (size_t)ifap->ifa_broadaddr->sa_len); 167 sin = (struct sockaddr_in *)(void *)&bip->broadaddr; 168 sin->sin_port = 169 ((struct sockaddr_in *) 170 (void *)res->ai_addr)->sin_port; 171 #ifdef INET6 172 } else if (af == AF_INET6) { 173 sin6 = (struct sockaddr_in6 *)(void *)&bip->broadaddr; 174 inet_pton(af, RPCB_MULTICAST_ADDR, &sin6->sin6_addr); 175 sin6->sin6_family = af; 176 sin6->sin6_len = sizeof *sin6; 177 sin6->sin6_port = 178 ((struct sockaddr_in6 *) 179 (void *)res->ai_addr)->sin6_port; 180 sin6->sin6_scope_id = bip->index; 181 #endif 182 } 183 TAILQ_INSERT_TAIL(list, bip, link); 184 count++; 185 } 186 freeifaddrs(ifp); 187 freeaddrinfo(res); 188 189 return count; 190 } 191 192 void 193 __rpc_freebroadifs(broadlist_t *list) 194 { 195 struct broadif *bip, *next; 196 197 bip = TAILQ_FIRST(list); 198 199 while (bip != NULL) { 200 next = TAILQ_NEXT(bip, link); 201 free(bip); 202 bip = next; 203 } 204 } 205 206 int 207 /*ARGSUSED*/ 208 __rpc_broadenable(int af, int s, struct broadif *bip) 209 { 210 int o = 1; 211 212 #if 0 213 if (af == AF_INET6) { 214 fprintf(stderr, "set v6 multicast if to %d\n", bip->index); 215 if (_setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_IF, &bip->index, 216 sizeof bip->index) < 0) 217 return -1; 218 } else 219 #endif 220 if (_setsockopt(s, SOL_SOCKET, SO_BROADCAST, &o, sizeof o) < 0) 221 return -1; 222 223 return 0; 224 } 225 226 227 enum clnt_stat 228 rpc_broadcast_exp(prog, vers, proc, xargs, argsp, xresults, resultsp, 229 eachresult, inittime, waittime, nettype) 230 rpcprog_t prog; /* program number */ 231 rpcvers_t vers; /* version number */ 232 rpcproc_t proc; /* procedure number */ 233 xdrproc_t xargs; /* xdr routine for args */ 234 caddr_t argsp; /* pointer to args */ 235 xdrproc_t xresults; /* xdr routine for results */ 236 caddr_t resultsp; /* pointer to results */ 237 resultproc_t eachresult; /* call with each result obtained */ 238 int inittime; /* how long to wait initially */ 239 int waittime; /* maximum time to wait */ 240 const char *nettype; /* transport type */ 241 { 242 enum clnt_stat stat = RPC_SUCCESS; /* Return status */ 243 XDR xdr_stream; /* XDR stream */ 244 XDR *xdrs = &xdr_stream; 245 struct rpc_msg msg; /* RPC message */ 246 struct timeval t; 247 char *outbuf = NULL; /* Broadcast msg buffer */ 248 char *inbuf = NULL; /* Reply buf */ 249 int inlen; 250 u_int maxbufsize = 0; 251 AUTH *sys_auth = authunix_create_default(); 252 int i; 253 void *handle; 254 char uaddress[1024]; /* A self imposed limit */ 255 char *uaddrp = uaddress; 256 int pmap_reply_flag; /* reply recvd from PORTMAP */ 257 /* An array of all the suitable broadcast transports */ 258 struct { 259 int fd; /* File descriptor */ 260 int af; 261 int proto; 262 struct netconfig *nconf; /* Netconfig structure */ 263 u_int asize; /* Size of the addr buf */ 264 u_int dsize; /* Size of the data buf */ 265 struct sockaddr_storage raddr; /* Remote address */ 266 broadlist_t nal; 267 } fdlist[MAXBCAST]; 268 struct pollfd pfd[MAXBCAST]; 269 size_t fdlistno = 0; 270 struct r_rpcb_rmtcallargs barg; /* Remote arguments */ 271 struct r_rpcb_rmtcallres bres; /* Remote results */ 272 size_t outlen, outlen_pmap; 273 struct netconfig *nconf; 274 int msec; 275 int pollretval; 276 int fds_found; 277 278 #ifdef PORTMAP 279 u_long port; /* Remote port number */ 280 int pmap_flag = 0; /* UDP exists ? */ 281 char *outbuf_pmap = NULL; 282 struct rmtcallargs barg_pmap; /* Remote arguments */ 283 struct rmtcallres bres_pmap; /* Remote results */ 284 u_int udpbufsz = 0; 285 #endif /* PORTMAP */ 286 287 if (sys_auth == NULL) { 288 return (RPC_SYSTEMERROR); 289 } 290 /* 291 * initialization: create a fd, a broadcast address, and send the 292 * request on the broadcast transport. 293 * Listen on all of them and on replies, call the user supplied 294 * function. 295 */ 296 297 if (nettype == NULL) 298 nettype = "datagram_n"; 299 if ((handle = __rpc_setconf(nettype)) == NULL) { 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 (void) 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 (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 (void) xdr_replymsg(xdrs, &msg); 617 (void) (*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 (void) free(inbuf); 631 if (outbuf) 632 (void) free(outbuf); 633 #ifdef PORTMAP 634 if (outbuf_pmap) 635 (void) free(outbuf_pmap); 636 #endif /* PORTMAP */ 637 for (i = 0; i < fdlistno; i++) { 638 (void)_close(fdlist[i].fd); 639 __rpc_freebroadifs(&fdlist[i].nal); 640 } 641 AUTH_DESTROY(sys_auth); 642 (void) __rpc_endconf(handle); 643 644 return (stat); 645 } 646 647 648 enum clnt_stat 649 rpc_broadcast(prog, vers, proc, xargs, argsp, xresults, resultsp, 650 eachresult, nettype) 651 rpcprog_t prog; /* program number */ 652 rpcvers_t vers; /* version number */ 653 rpcproc_t proc; /* procedure number */ 654 xdrproc_t xargs; /* xdr routine for args */ 655 caddr_t argsp; /* pointer to args */ 656 xdrproc_t xresults; /* xdr routine for results */ 657 caddr_t resultsp; /* pointer to results */ 658 resultproc_t eachresult; /* call with each result obtained */ 659 const char *nettype; /* transport type */ 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