clnt_bcast.c revision 1.3
1 /* $NetBSD: clnt_bcast.c,v 1.3 2000/07/06 03:05:20 christos 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 <rpc/nettype.h> 69 #include <arpa/inet.h> 70 #ifdef RPC_DEBUG 71 #include <stdio.h> 72 #endif 73 #include <errno.h> 74 #include <stdlib.h> 75 #include <unistd.h> 76 #include <netdb.h> 77 #include <err.h> 78 #include <string.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 #ifdef __weak_alias 110 __weak_alias(rpc_broadcast_exp,_rpc_broadcast_exp) 111 __weak_alias(rpc_broadcast,_rpc_broadcast) 112 #endif 113 114 struct broadif { 115 int index; 116 struct sockaddr_storage broadaddr; 117 TAILQ_ENTRY(broadif) link; 118 }; 119 120 typedef TAILQ_HEAD(, broadif) broadlist_t; 121 122 int __rpc_getbroadifs __P((int, int, int, broadlist_t *)); 123 void __rpc_freebroadifs __P((broadlist_t *)); 124 int __rpc_broadenable __P((int, int, struct broadif *)); 125 126 int __rpc_lowvers = 0; 127 128 int 129 __rpc_getbroadifs(int af, int proto, int socktype, broadlist_t *list) 130 { 131 int count = 0; 132 struct broadif *bip; 133 struct ifaddrs *ifap, *ifp; 134 #ifdef INET6 135 struct sockaddr_in6 *sin6; 136 #endif 137 struct sockaddr_in *sin; 138 struct addrinfo hints, *res; 139 140 if (getifaddrs(&ifp) < 0) 141 return 0; 142 143 memset(&hints, 0, sizeof hints); 144 145 hints.ai_family = af; 146 hints.ai_protocol = proto; 147 hints.ai_socktype = socktype; 148 149 if (getaddrinfo(NULL, "sunrpc", &hints, &res) != 0) 150 return 0; 151 152 for (ifap = ifp; ifap != NULL; ifap = ifap->ifa_next) { 153 if (ifap->ifa_addr->sa_family != af || 154 !(ifap->ifa_flags & IFF_UP)) 155 continue; 156 #ifdef INET6 157 if ((af == AF_INET6 && !(ifap->ifa_flags & IFF_MULTICAST)) || 158 !(ifap->ifa_flags & IFF_BROADCAST)) 159 continue; 160 #endif 161 bip = (struct broadif *)malloc(sizeof *bip); 162 if (bip == NULL) 163 break; 164 bip->index = if_nametoindex(ifap->ifa_name); 165 #ifdef INET6 166 if (af != AF_INET6 && (ifap->ifa_flags & IFF_BROADCAST)) { 167 #else 168 if (ifap->ifa_flags & IFF_BROADCAST) { 169 #endif 170 memcpy(&bip->broadaddr, ifap->ifa_broadaddr, 171 (size_t)ifap->ifa_broadaddr->sa_len); 172 sin = (struct sockaddr_in *)(void *)&bip->broadaddr; 173 sin->sin_port = 174 ((struct sockaddr_in *) 175 (void *)res->ai_addr)->sin_port; 176 #ifdef INET6 177 } else if (af == AF_INET6) { 178 sin6 = (struct sockaddr_in6 *)(void *)&bip->broadaddr; 179 inet_pton(af, RPCB_MULTICAST_ADDR, &sin6->sin6_addr); 180 sin6->sin6_family = af; 181 sin6->sin6_len = sizeof *sin6; 182 sin6->sin6_port = 183 ((struct sockaddr_in6 *) 184 (void *)res->ai_addr)->sin6_port; 185 sin6->sin6_scope_id = bip->index; 186 #endif 187 } 188 TAILQ_INSERT_TAIL(list, bip, link); 189 count++; 190 } 191 freeifaddrs(ifp); 192 freeaddrinfo(res); 193 194 return count; 195 } 196 197 void 198 __rpc_freebroadifs(broadlist_t *list) 199 { 200 struct broadif *bip, *next; 201 202 bip = TAILQ_FIRST(list); 203 204 while (bip != NULL) { 205 next = TAILQ_NEXT(bip, link); 206 free(bip); 207 bip = next; 208 } 209 } 210 211 int 212 /*ARGSUSED*/ 213 __rpc_broadenable(int af, int s, struct broadif *bip) 214 { 215 int o = 1; 216 217 #if 0 218 if (af == AF_INET6) { 219 fprintf(stderr, "set v6 multicast if to %d\n", bip->index); 220 if (setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_IF, &bip->index, 221 sizeof bip->index) < 0) 222 return -1; 223 } else 224 #endif 225 if (setsockopt(s, SOL_SOCKET, SO_BROADCAST, &o, sizeof o) < 0) 226 return -1; 227 228 return 0; 229 } 230 231 232 enum clnt_stat 233 rpc_broadcast_exp(prog, vers, proc, xargs, argsp, xresults, resultsp, 234 eachresult, inittime, waittime, nettype) 235 rpcprog_t prog; /* program number */ 236 rpcvers_t vers; /* version number */ 237 rpcproc_t proc; /* procedure number */ 238 xdrproc_t xargs; /* xdr routine for args */ 239 caddr_t argsp; /* pointer to args */ 240 xdrproc_t xresults; /* xdr routine for results */ 241 caddr_t resultsp; /* pointer to results */ 242 resultproc_t eachresult; /* call with each result obtained */ 243 int inittime; /* how long to wait initially */ 244 int waittime; /* maximum time to wait */ 245 const char *nettype; /* transport type */ 246 { 247 enum clnt_stat stat = RPC_SUCCESS; /* Return status */ 248 XDR xdr_stream; /* XDR stream */ 249 XDR *xdrs = &xdr_stream; 250 struct rpc_msg msg; /* RPC message */ 251 struct timeval t; 252 char *outbuf = NULL; /* Broadcast msg buffer */ 253 char *inbuf = NULL; /* Reply buf */ 254 int inlen; 255 u_int maxbufsize = 0; 256 AUTH *sys_auth = authunix_create_default(); 257 int i; 258 void *handle; 259 char uaddress[1024]; /* A self imposed limit */ 260 char *uaddrp = uaddress; 261 int pmap_reply_flag; /* reply recvd from PORTMAP */ 262 /* An array of all the suitable broadcast transports */ 263 struct { 264 int fd; /* File descriptor */ 265 int af; 266 int proto; 267 struct netconfig *nconf; /* Netconfig structure */ 268 u_int asize; /* Size of the addr buf */ 269 u_int dsize; /* Size of the data buf */ 270 struct sockaddr_storage raddr; /* Remote address */ 271 broadlist_t nal; 272 } fdlist[MAXBCAST]; 273 struct pollfd pfd[MAXBCAST]; 274 size_t fdlistno = 0; 275 struct r_rpcb_rmtcallargs barg; /* Remote arguments */ 276 struct r_rpcb_rmtcallres bres; /* Remote results */ 277 size_t outlen, outlen_pmap; 278 struct netconfig *nconf; 279 int msec; 280 int pollretval; 281 int fds_found; 282 283 #ifdef PORTMAP 284 u_long port; /* Remote port number */ 285 int pmap_flag = 0; /* UDP exists ? */ 286 char *outbuf_pmap = NULL; 287 struct rmtcallargs barg_pmap; /* Remote arguments */ 288 struct rmtcallres bres_pmap; /* Remote results */ 289 u_int udpbufsz = 0; 290 #endif /* PORTMAP */ 291 292 if (sys_auth == NULL) { 293 return (RPC_SYSTEMERROR); 294 } 295 /* 296 * initialization: create a fd, a broadcast address, and send the 297 * request on the broadcast transport. 298 * Listen on all of them and on replies, call the user supplied 299 * function. 300 */ 301 302 if (nettype == NULL) 303 nettype = "datagram_n"; 304 if ((handle = __rpc_setconf(nettype)) == NULL) { 305 return (RPC_UNKNOWNPROTO); 306 } 307 while ((nconf = __rpc_getconf(handle)) != NULL) { 308 int fd; 309 struct __rpc_sockinfo si; 310 311 if (nconf->nc_semantics != NC_TPI_CLTS) 312 continue; 313 if (fdlistno >= MAXBCAST) 314 break; /* No more slots available */ 315 if (!__rpc_nconf2sockinfo(nconf, &si)) 316 continue; 317 318 TAILQ_INIT(&fdlist[fdlistno].nal); 319 if (__rpc_getbroadifs(si.si_af, si.si_proto, si.si_socktype, 320 &fdlist[fdlistno].nal) == 0) 321 continue; 322 323 fd = socket(si.si_af, si.si_socktype, si.si_proto); 324 if (fd < 0) { 325 stat = RPC_CANTSEND; 326 continue; 327 } 328 fdlist[fdlistno].af = si.si_af; 329 fdlist[fdlistno].proto = si.si_proto; 330 fdlist[fdlistno].fd = fd; 331 fdlist[fdlistno].nconf = nconf; 332 fdlist[fdlistno].asize = __rpc_get_a_size(si.si_af); 333 pfd[fdlistno].events = POLLIN | POLLPRI | 334 POLLRDNORM | POLLRDBAND; 335 pfd[fdlistno].fd = fdlist[fdlistno].fd = fd; 336 fdlist[fdlistno].dsize = __rpc_get_t_size(si.si_af, si.si_proto, 337 0); 338 339 if (maxbufsize <= fdlist[fdlistno].dsize) 340 maxbufsize = fdlist[fdlistno].dsize; 341 342 #ifdef PORTMAP 343 if (si.si_af == AF_INET && si.si_proto == IPPROTO_UDP) { 344 udpbufsz = fdlist[fdlistno].dsize; 345 if ((outbuf_pmap = malloc(udpbufsz)) == NULL) { 346 close(fd); 347 stat = RPC_SYSTEMERROR; 348 goto done_broad; 349 } 350 pmap_flag = 1; 351 } 352 #endif 353 fdlistno++; 354 } 355 356 if (fdlistno == 0) { 357 if (stat == RPC_SUCCESS) 358 stat = RPC_UNKNOWNPROTO; 359 goto done_broad; 360 } 361 if (maxbufsize == 0) { 362 if (stat == RPC_SUCCESS) 363 stat = RPC_CANTSEND; 364 goto done_broad; 365 } 366 inbuf = malloc(maxbufsize); 367 outbuf = malloc(maxbufsize); 368 if ((inbuf == NULL) || (outbuf == NULL)) { 369 stat = RPC_SYSTEMERROR; 370 goto done_broad; 371 } 372 373 /* Serialize all the arguments which have to be sent */ 374 (void) gettimeofday(&t, NULL); 375 msg.rm_xid = __RPC_GETXID(&t); 376 msg.rm_direction = CALL; 377 msg.rm_call.cb_rpcvers = RPC_MSG_VERSION; 378 msg.rm_call.cb_prog = RPCBPROG; 379 msg.rm_call.cb_vers = RPCBVERS; 380 msg.rm_call.cb_proc = RPCBPROC_CALLIT; 381 barg.prog = prog; 382 barg.vers = vers; 383 barg.proc = proc; 384 barg.args.args_val = argsp; 385 barg.xdr_args = xargs; 386 bres.addr = uaddrp; 387 bres.results.results_val = resultsp; 388 bres.xdr_res = xresults; 389 msg.rm_call.cb_cred = sys_auth->ah_cred; 390 msg.rm_call.cb_verf = sys_auth->ah_verf; 391 xdrmem_create(xdrs, outbuf, maxbufsize, XDR_ENCODE); 392 if ((!xdr_callmsg(xdrs, &msg)) || 393 (!xdr_rpcb_rmtcallargs(xdrs, 394 (struct rpcb_rmtcallargs *)(void *)&barg))) { 395 stat = RPC_CANTENCODEARGS; 396 goto done_broad; 397 } 398 outlen = xdr_getpos(xdrs); 399 xdr_destroy(xdrs); 400 401 #ifdef PORTMAP 402 /* Prepare the packet for version 2 PORTMAP */ 403 if (pmap_flag) { 404 msg.rm_xid++; /* One way to distinguish */ 405 msg.rm_call.cb_prog = PMAPPROG; 406 msg.rm_call.cb_vers = PMAPVERS; 407 msg.rm_call.cb_proc = PMAPPROC_CALLIT; 408 barg_pmap.prog = prog; 409 barg_pmap.vers = vers; 410 barg_pmap.proc = proc; 411 barg_pmap.args_ptr = argsp; 412 barg_pmap.xdr_args = xargs; 413 bres_pmap.port_ptr = &port; 414 bres_pmap.xdr_results = xresults; 415 bres_pmap.results_ptr = resultsp; 416 xdrmem_create(xdrs, outbuf_pmap, udpbufsz, XDR_ENCODE); 417 if ((! xdr_callmsg(xdrs, &msg)) || 418 (! xdr_rmtcall_args(xdrs, &barg_pmap))) { 419 stat = RPC_CANTENCODEARGS; 420 goto done_broad; 421 } 422 outlen_pmap = xdr_getpos(xdrs); 423 xdr_destroy(xdrs); 424 } 425 #endif /* PORTMAP */ 426 427 /* 428 * Basic loop: broadcast the packets to transports which 429 * support data packets of size such that one can encode 430 * all the arguments. 431 * Wait a while for response(s). 432 * The response timeout grows larger per iteration. 433 */ 434 for (msec = inittime; msec <= waittime; msec += msec) { 435 struct broadif *bip; 436 437 /* Broadcast all the packets now */ 438 for (i = 0; i < fdlistno; i++) { 439 if (fdlist[i].dsize < outlen) { 440 stat = RPC_CANTSEND; 441 continue; 442 } 443 for (bip = TAILQ_FIRST(&fdlist[i].nal); bip != NULL; 444 bip = TAILQ_NEXT(bip, link)) { 445 void *addr; 446 447 addr = &bip->broadaddr; 448 449 __rpc_broadenable(fdlist[i].af, fdlist[i].fd, 450 bip); 451 452 /* 453 * Only use version 3 if lowvers is not set 454 */ 455 456 if (!__rpc_lowvers) 457 if (sendto(fdlist[i].fd, outbuf, 458 outlen, 0, (struct sockaddr*)addr, 459 (size_t)fdlist[i].asize) != 460 outlen) { 461 #ifdef RPC_DEBUG 462 perror("sendto"); 463 #endif 464 warnx("clnt_bcast: cannot send" 465 "broadcast packet"); 466 stat = RPC_CANTSEND; 467 continue; 468 }; 469 #ifdef RPC_DEBUG 470 if (!__rpc_lowvers) 471 fprintf(stderr, "Broadcast packet sent " 472 "for %s\n", 473 fdlist[i].nconf->nc_netid); 474 #endif 475 #ifdef PORTMAP 476 /* 477 * Send the version 2 packet also 478 * for UDP/IP 479 */ 480 if (fdlist[i].proto == IPPROTO_UDP) { 481 if (sendto(fdlist[i].fd, outbuf_pmap, 482 outlen_pmap, 0, addr, 483 (size_t)fdlist[i].asize) != 484 outlen_pmap) { 485 warnx("clnt_bcast: " 486 "Cannot send broadcast packet"); 487 stat = RPC_CANTSEND; 488 continue; 489 } 490 } 491 #ifdef RPC_DEBUG 492 fprintf(stderr, "PMAP Broadcast packet " 493 "sent for %s\n", 494 fdlist[i].nconf->nc_netid); 495 #endif 496 #endif /* PORTMAP */ 497 } 498 /* End for sending all packets on this transport */ 499 } /* End for sending on all transports */ 500 501 if (eachresult == NULL) { 502 stat = RPC_SUCCESS; 503 goto done_broad; 504 } 505 506 /* 507 * Get all the replies from these broadcast requests 508 */ 509 recv_again: 510 511 switch (pollretval = poll(pfd, fdlistno, msec)) { 512 case 0: /* timed out */ 513 stat = RPC_TIMEDOUT; 514 continue; 515 case -1: /* some kind of error - we ignore it */ 516 goto recv_again; 517 } /* end of poll results switch */ 518 519 for (i = fds_found = 0; 520 i < fdlistno && fds_found < pollretval; i++) { 521 bool_t done = FALSE; 522 523 if (pfd[i].revents == 0) 524 continue; 525 else if (pfd[i].revents & POLLNVAL) { 526 /* 527 * Something bad has happened to this descri- 528 * ptor. We can cause poll() to ignore 529 * it simply by using a negative fd. We do that 530 * rather than compacting the pfd[] and fdlist[] 531 * arrays. 532 */ 533 pfd[i].fd = -1; 534 fds_found++; 535 continue; 536 } else 537 fds_found++; 538 #ifdef RPC_DEBUG 539 fprintf(stderr, "response for %s\n", 540 fdlist[i].nconf->nc_netid); 541 #endif 542 try_again: 543 inlen = recvfrom(fdlist[i].fd, inbuf, fdlist[i].dsize, 544 0, (struct sockaddr *)(void *)&fdlist[i].raddr, 545 &fdlist[i].asize); 546 if (inlen < 0) { 547 if (errno == EINTR) 548 goto try_again; 549 warnx("clnt_bcast: Cannot receive reply to " 550 "broadcast"); 551 stat = RPC_CANTRECV; 552 continue; 553 } 554 if (inlen < sizeof (u_int32_t)) 555 continue; /* Drop that and go ahead */ 556 /* 557 * see if reply transaction id matches sent id. 558 * If so, decode the results. If return id is xid + 1 559 * it was a PORTMAP reply 560 */ 561 if (*((u_int32_t *)(void *)(inbuf)) == 562 *((u_int32_t *)(void *)(outbuf))) { 563 pmap_reply_flag = 0; 564 msg.acpted_rply.ar_verf = _null_auth; 565 msg.acpted_rply.ar_results.where = 566 (caddr_t)(void *)&bres; 567 msg.acpted_rply.ar_results.proc = 568 (xdrproc_t)xdr_rpcb_rmtcallres; 569 #ifdef PORTMAP 570 } else if (pmap_flag && 571 *((u_int32_t *)(void *)(inbuf)) == 572 *((u_int32_t *)(void *)(outbuf_pmap))) { 573 pmap_reply_flag = 1; 574 msg.acpted_rply.ar_verf = _null_auth; 575 msg.acpted_rply.ar_results.where = 576 (caddr_t)(void *)&bres_pmap; 577 msg.acpted_rply.ar_results.proc = 578 (xdrproc_t)xdr_rmtcallres; 579 #endif /* PORTMAP */ 580 } else 581 continue; 582 xdrmem_create(xdrs, inbuf, (u_int)inlen, XDR_DECODE); 583 if (xdr_replymsg(xdrs, &msg)) { 584 if ((msg.rm_reply.rp_stat == MSG_ACCEPTED) && 585 (msg.acpted_rply.ar_stat == SUCCESS)) { 586 struct netbuf taddr, *np; 587 struct sockaddr_in *sin; 588 589 #ifdef PORTMAP 590 if (pmap_flag && pmap_reply_flag) { 591 sin = (struct sockaddr_in *) 592 (void *)&fdlist[i].raddr; 593 sin->sin_port = 594 htons((u_short)port); 595 taddr.len = taddr.maxlen = 596 fdlist[i].raddr.ss_len; 597 taddr.buf = &fdlist[i].raddr; 598 done = (*eachresult)(resultsp, 599 &taddr, fdlist[i].nconf); 600 } else { 601 #endif 602 #ifdef RPC_DEBUG 603 fprintf(stderr, "uaddr %s\n", 604 uaddrp); 605 #endif 606 np = uaddr2taddr( 607 fdlist[i].nconf, uaddrp); 608 done = (*eachresult)(resultsp, 609 np, fdlist[i].nconf); 610 free(np); 611 #ifdef PORTMAP 612 } 613 #endif 614 } 615 /* otherwise, we just ignore the errors ... */ 616 } 617 /* else some kind of deserialization problem ... */ 618 619 xdrs->x_op = XDR_FREE; 620 msg.acpted_rply.ar_results.proc = (xdrproc_t) xdr_void; 621 (void) xdr_replymsg(xdrs, &msg); 622 (void) (*xresults)(xdrs, resultsp); 623 XDR_DESTROY(xdrs); 624 if (done) { 625 stat = RPC_SUCCESS; 626 goto done_broad; 627 } else { 628 goto recv_again; 629 } 630 } /* The recv for loop */ 631 } /* The giant for loop */ 632 633 done_broad: 634 if (inbuf) 635 (void) free(inbuf); 636 if (outbuf) 637 (void) free(outbuf); 638 #ifdef PORTMAP 639 if (outbuf_pmap) 640 (void) free(outbuf_pmap); 641 #endif 642 for (i = 0; i < fdlistno; i++) { 643 (void) close(fdlist[i].fd); 644 __rpc_freebroadifs(&fdlist[i].nal); 645 } 646 AUTH_DESTROY(sys_auth); 647 (void) __rpc_endconf(handle); 648 649 return (stat); 650 } 651 652 653 enum clnt_stat 654 rpc_broadcast(prog, vers, proc, xargs, argsp, xresults, resultsp, 655 eachresult, nettype) 656 rpcprog_t prog; /* program number */ 657 rpcvers_t vers; /* version number */ 658 rpcproc_t proc; /* procedure number */ 659 xdrproc_t xargs; /* xdr routine for args */ 660 caddr_t argsp; /* pointer to args */ 661 xdrproc_t xresults; /* xdr routine for results */ 662 caddr_t resultsp; /* pointer to results */ 663 resultproc_t eachresult; /* call with each result obtained */ 664 const char *nettype; /* transport type */ 665 { 666 enum clnt_stat dummy; 667 668 dummy = rpc_broadcast_exp(prog, vers, proc, xargs, argsp, 669 xresults, resultsp, eachresult, 670 INITTIME, WAITTIME, nettype); 671 return (dummy); 672 } 673
Indexes created Tue Sep 23 07:09:52 GMT 2025