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; 273 struct netconfig *nconf; 274 int msec; 275 int pollretval; 276 int fds_found; 277 278 #ifdef PORTMAP 279 size_t outlen_pmap = 0; 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 == 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(nettype)) == NULL) { 301 return (RPC_UNKNOWNPROTO); 302 } 303 while ((nconf = __rpc_getconf(handle)) != NULL) { 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 /* PORTMAP */ 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, NULL); 371 msg.rm_xid = __RPC_GETXID(&t); 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, 390 (struct rpcb_rmtcallargs *)(void *)&barg))) { 391 stat = RPC_CANTENCODEARGS; 392 goto done_broad; 393 } 394 outlen = xdr_getpos(xdrs); 395 xdr_destroy(xdrs); 396 397 #ifdef PORTMAP 398 /* Prepare the packet for version 2 PORTMAP */ 399 if (pmap_flag) { 400 msg.rm_xid++; /* One way to distinguish */ 401 msg.rm_call.cb_prog = PMAPPROG; 402 msg.rm_call.cb_vers = PMAPVERS; 403 msg.rm_call.cb_proc = PMAPPROC_CALLIT; 404 barg_pmap.prog = prog; 405 barg_pmap.vers = vers; 406 barg_pmap.proc = proc; 407 barg_pmap.args_ptr = argsp; 408 barg_pmap.xdr_args = xargs; 409 bres_pmap.port_ptr = &port; 410 bres_pmap.xdr_results = xresults; 411 bres_pmap.results_ptr = resultsp; 412 xdrmem_create(xdrs, outbuf_pmap, udpbufsz, XDR_ENCODE); 413 if ((! xdr_callmsg(xdrs, &msg)) || 414 (! xdr_rmtcall_args(xdrs, &barg_pmap))) { 415 stat = RPC_CANTENCODEARGS; 416 goto done_broad; 417 } 418 outlen_pmap = xdr_getpos(xdrs); 419 xdr_destroy(xdrs); 420 } 421 #endif /* PORTMAP */ 422 423 /* 424 * Basic loop: broadcast the packets to transports which 425 * support data packets of size such that one can encode 426 * all the arguments. 427 * Wait a while for response(s). 428 * The response timeout grows larger per iteration. 429 */ 430 for (msec = inittime; msec <= waittime; msec += msec) { 431 struct broadif *bip; 432 433 /* Broadcast all the packets now */ 434 for (i = 0; i < fdlistno; i++) { 435 if (fdlist[i].dsize < outlen) { 436 stat = RPC_CANTSEND; 437 continue; 438 } 439 for (bip = TAILQ_FIRST(&fdlist[i].nal); bip != NULL; 440 bip = TAILQ_NEXT(bip, link)) { 441 void *addr; 442 443 addr = &bip->broadaddr; 444 445 __rpc_broadenable(fdlist[i].af, fdlist[i].fd, 446 bip); 447 448 /* 449 * Only use version 3 if lowvers is not set 450 */ 451 452 if (!__rpc_lowvers) 453 if (_sendto(fdlist[i].fd, outbuf, 454 outlen, 0, (struct sockaddr*)addr, 455 (size_t)fdlist[i].asize) != 456 outlen) { 457 #ifdef RPC_DEBUG 458 perror("sendto"); 459 #endif 460 warnx("clnt_bcast: cannot send" 461 "broadcast packet"); 462 stat = RPC_CANTSEND; 463 continue; 464 }; 465 #ifdef RPC_DEBUG 466 if (!__rpc_lowvers) 467 fprintf(stderr, "Broadcast packet sent " 468 "for %s\n", 469 fdlist[i].nconf->nc_netid); 470 #endif 471 #ifdef PORTMAP 472 /* 473 * Send the version 2 packet also 474 * for UDP/IP 475 */ 476 if (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 (void) xdr_replymsg(xdrs, &msg); 618 (void) (*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 (void) free(inbuf); 632 if (outbuf) 633 (void) free(outbuf); 634 #ifdef PORTMAP 635 if (outbuf_pmap) 636 (void) free(outbuf_pmap); 637 #endif /* PORTMAP */ 638 for (i = 0; i < fdlistno; i++) { 639 (void)_close(fdlist[i].fd); 640 __rpc_freebroadifs(&fdlist[i].nal); 641 } 642 AUTH_DESTROY(sys_auth); 643 (void) __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