ypbind.c revision 1.7
1 /* 2 * Copyright (c) 1992, 1993 Theo de Raadt <deraadt (at) fsa.ca> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by Theo de Raadt. 16 * 4. The name of the author may not be used to endorse or promote 17 * products derived from this software without specific prior written 18 * permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 21 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 22 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 24 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #ifndef LINT 34 static char rcsid[] = "$Id: ypbind.c,v 1.7 1994/05/25 09:55:39 deraadt Exp $"; 35 #endif 36 37 #include <sys/param.h> 38 #include <sys/types.h> 39 #include <sys/ioctl.h> 40 #include <sys/signal.h> 41 #include <sys/socket.h> 42 #include <sys/file.h> 43 #include <sys/fcntl.h> 44 #include <sys/uio.h> 45 #include <sys/syslog.h> 46 #include <stdio.h> 47 #include <errno.h> 48 #include <ctype.h> 49 #include <dirent.h> 50 #include <netdb.h> 51 #include <string.h> 52 #include <rpc/rpc.h> 53 #include <rpc/xdr.h> 54 #include <net/if.h> 55 #include <arpa/inet.h> 56 #include <rpc/pmap_clnt.h> 57 #include <rpc/pmap_prot.h> 58 #include <rpc/pmap_rmt.h> 59 #include <unistd.h> 60 #include <rpcsvc/yp_prot.h> 61 #include <rpcsvc/ypclnt.h> 62 63 #ifndef BINDINGDIR 64 #define BINDINGDIR "/var/yp/binding" 65 #endif 66 67 struct _dom_binding { 68 struct _dom_binding *dom_pnext; 69 char dom_domain[YPMAXDOMAIN + 1]; 70 struct sockaddr_in dom_server_addr; 71 unsigned short int dom_server_port; 72 int dom_socket; 73 CLIENT *dom_client; 74 long int dom_vers; 75 time_t dom_check_t; 76 int dom_lockfd; 77 int dom_alive; 78 }; 79 80 extern bool_t xdr_domainname(), xdr_ypbind_resp(); 81 extern bool_t xdr_ypreq_key(), xdr_ypresp_val(); 82 extern bool_t xdr_ypbind_setdom(); 83 84 char *domainname; 85 86 struct _dom_binding *ypbindlist; 87 int check; 88 89 #define YPSET_NO 0 90 #define YPSET_LOCAL 1 91 #define YPSET_ALL 2 92 int ypsetmode = YPSET_NO; 93 94 int rpcsock; 95 struct rmtcallargs rmtca; 96 struct rmtcallres rmtcr; 97 char rmtcr_outval; 98 u_long rmtcr_port; 99 SVCXPRT *udptransp, *tcptransp; 100 101 void * 102 ypbindproc_null_2(transp, argp, clnt) 103 SVCXPRT *transp; 104 void *argp; 105 CLIENT *clnt; 106 { 107 static char res; 108 109 bzero((char *)&res, sizeof(res)); 110 return (void *)&res; 111 } 112 113 struct ypbind_resp * 114 ypbindproc_domain_2(transp, argp, clnt) 115 SVCXPRT *transp; 116 char *argp; 117 CLIENT *clnt; 118 { 119 static struct ypbind_resp res; 120 struct _dom_binding *ypdb; 121 char path[MAXPATHLEN]; 122 123 bzero((char *)&res, sizeof res); 124 res.ypbind_status = YPBIND_FAIL_VAL; 125 126 for(ypdb=ypbindlist; ypdb; ypdb=ypdb->dom_pnext) 127 if( strcmp(ypdb->dom_domain, argp) == 0) 128 break; 129 130 if(ypdb==NULL) { 131 ypdb = (struct _dom_binding *)malloc(sizeof *ypdb); 132 bzero((char *)ypdb, sizeof *ypdb); 133 strncpy(ypdb->dom_domain, argp, sizeof ypdb->dom_domain); 134 ypdb->dom_vers = YPVERS; 135 ypdb->dom_alive = 0; 136 ypdb->dom_lockfd = -1; 137 sprintf(path, "%s/%s.%d", BINDINGDIR, ypdb->dom_domain, ypdb->dom_vers); 138 unlink(path); 139 ypdb->dom_pnext = ypbindlist; 140 ypbindlist = ypdb; 141 check++; 142 return NULL; 143 } 144 145 if(ypdb->dom_alive==0) 146 return NULL; 147 148 #if 0 149 delta = ypdb->dom_check_t - ypdb->dom_ask_t; 150 if( !(ypdb->dom_ask_t==0 || delta > 5)) { 151 ypdb->dom_ask_t = time(NULL); 152 /* 153 * Hmm. More than 2 requests in 5 seconds have indicated that my 154 * binding is possibly incorrect. Ok, make myself unalive, and 155 * find out what the actual state is. 156 */ 157 if(ypdb->dom_lockfd!=-1) 158 close(ypdb->dom_lockfd); 159 ypdb->dom_lockfd = -1; 160 ypdb->dom_alive = 0; 161 ypdb->dom_lockfd = -1; 162 sprintf(path, "%s/%s.%d", BINDINGDIR, ypdb->dom_domain, ypdb->dom_vers); 163 unlink(path); 164 check++; 165 return NULL; 166 } 167 #endif 168 169 answer: 170 res.ypbind_status = YPBIND_SUCC_VAL; 171 res.ypbind_respbody.ypbind_bindinfo.ypbind_binding_addr.s_addr = 172 ypdb->dom_server_addr.sin_addr.s_addr; 173 res.ypbind_respbody.ypbind_bindinfo.ypbind_binding_port = 174 ypdb->dom_server_port; 175 /*printf("domain %s at %s/%d\n", ypdb->dom_domain, 176 inet_ntoa(ypdb->dom_server_addr.sin_addr), 177 ntohs(ypdb->dom_server_addr.sin_port));*/ 178 return &res; 179 } 180 181 bool_t * 182 ypbindproc_setdom_2(transp, argp, clnt) 183 SVCXPRT *transp; 184 struct ypbind_setdom *argp; 185 CLIENT *clnt; 186 { 187 struct sockaddr_in *fromsin, bindsin; 188 char res; 189 190 bzero((char *)&res, sizeof(res)); 191 fromsin = svc_getcaller(transp); 192 193 switch(ypsetmode) { 194 case YPSET_LOCAL: 195 if( fromsin->sin_addr.s_addr != htonl(INADDR_LOOPBACK)) 196 return (void *)NULL; 197 break; 198 case YPSET_ALL: 199 break; 200 case YPSET_NO: 201 default: 202 return (void *)NULL; 203 } 204 205 if(ntohs(fromsin->sin_port) >= IPPORT_RESERVED) 206 return (void *)&res; 207 208 if(argp->ypsetdom_vers != YPVERS) 209 return (void *)&res; 210 211 bzero((char *)&bindsin, sizeof bindsin); 212 bindsin.sin_family = AF_INET; 213 bindsin.sin_addr.s_addr = argp->ypsetdom_addr.s_addr; 214 bindsin.sin_port = argp->ypsetdom_port; 215 rpc_received(argp->ypsetdom_domain, &bindsin, 1); 216 217 res = 1; 218 return (void *)&res; 219 } 220 221 static void 222 ypbindprog_2(rqstp, transp) 223 struct svc_req *rqstp; 224 register SVCXPRT *transp; 225 { 226 union { 227 char ypbindproc_domain_2_arg[MAXHOSTNAMELEN]; 228 struct ypbind_setdom ypbindproc_setdom_2_arg; 229 } argument; 230 struct authunix_parms *creds; 231 char *result; 232 bool_t (*xdr_argument)(), (*xdr_result)(); 233 char *(*local)(); 234 235 switch (rqstp->rq_proc) { 236 case YPBINDPROC_NULL: 237 xdr_argument = xdr_void; 238 xdr_result = xdr_void; 239 local = (char *(*)()) ypbindproc_null_2; 240 break; 241 242 case YPBINDPROC_DOMAIN: 243 xdr_argument = xdr_domainname; 244 xdr_result = xdr_ypbind_resp; 245 local = (char *(*)()) ypbindproc_domain_2; 246 break; 247 248 case YPBINDPROC_SETDOM: 249 switch(rqstp->rq_cred.oa_flavor) { 250 case AUTH_UNIX: 251 creds = (struct authunix_parms *)rqstp->rq_clntcred; 252 if( creds->aup_uid != 0) { 253 svcerr_auth(transp, AUTH_BADCRED); 254 return; 255 } 256 break; 257 default: 258 svcerr_auth(transp, AUTH_TOOWEAK); 259 return; 260 } 261 262 xdr_argument = xdr_ypbind_setdom; 263 xdr_result = xdr_void; 264 local = (char *(*)()) ypbindproc_setdom_2; 265 break; 266 267 default: 268 svcerr_noproc(transp); 269 return; 270 } 271 bzero((char *)&argument, sizeof(argument)); 272 if (!svc_getargs(transp, xdr_argument, &argument)) { 273 svcerr_decode(transp); 274 return; 275 } 276 result = (*local)(transp, &argument, rqstp); 277 if (result != NULL && !svc_sendreply(transp, xdr_result, result)) { 278 svcerr_systemerr(transp); 279 } 280 return; 281 } 282 283 main(argc, argv) 284 char **argv; 285 { 286 char path[MAXPATHLEN]; 287 struct timeval tv; 288 fd_set fdsr; 289 int width; 290 int i; 291 292 yp_get_default_domain(&domainname); 293 if( domainname[0] == '\0') { 294 fprintf(stderr, "domainname not set. Aborting.\n"); 295 exit(1); 296 } 297 298 for(i=1; i<argc; i++) { 299 if( strcmp("-ypset", argv[i]) == 0) 300 ypsetmode = YPSET_ALL; 301 else if (strcmp("-ypsetme", argv[i]) == 0) 302 ypsetmode = YPSET_LOCAL; 303 } 304 305 /* blow away everything in BINDINGDIR */ 306 307 308 309 #ifdef DAEMON 310 switch(fork()) { 311 case 0: 312 break; 313 case -1: 314 perror("fork"); 315 exit(1); 316 default: 317 exit(0); 318 } 319 setsid(); 320 #endif 321 322 pmap_unset(YPBINDPROG, YPBINDVERS); 323 324 udptransp = svcudp_create(RPC_ANYSOCK); 325 if (udptransp == NULL) { 326 fprintf(stderr, "cannot create udp service."); 327 exit(1); 328 } 329 if (!svc_register(udptransp, YPBINDPROG, YPBINDVERS, ypbindprog_2, 330 IPPROTO_UDP)) { 331 fprintf(stderr, "unable to register (YPBINDPROG, YPBINDVERS, udp)."); 332 exit(1); 333 } 334 335 tcptransp = svctcp_create(RPC_ANYSOCK, 0, 0); 336 if (tcptransp == NULL) { 337 fprintf(stderr, "cannot create tcp service."); 338 exit(1); 339 } 340 341 if (!svc_register(tcptransp, YPBINDPROG, YPBINDVERS, ypbindprog_2, 342 IPPROTO_TCP)) { 343 fprintf(stderr, "unable to register (YPBINDPROG, YPBINDVERS, tcp)."); 344 exit(1); 345 } 346 347 if( (rpcsock=socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0) { 348 perror("socket"); 349 return -1; 350 } 351 352 fcntl(rpcsock, F_SETFL, fcntl(rpcsock, F_GETFL, 0) | FNDELAY); 353 i = 1; 354 setsockopt(rpcsock, SOL_SOCKET, SO_BROADCAST, &i, sizeof(i)); 355 rmtca.prog = YPPROG; 356 rmtca.vers = YPVERS; 357 rmtca.proc = YPPROC_DOMAIN_NONACK; 358 rmtca.xdr_args = NULL; /* set at call time */ 359 rmtca.args_ptr = NULL; /* set at call time */ 360 rmtcr.port_ptr = &rmtcr_port; 361 rmtcr.xdr_results = xdr_bool; 362 rmtcr.results_ptr = (caddr_t)&rmtcr_outval; 363 364 /* build initial domain binding, make it "unsuccessful" */ 365 ypbindlist = (struct _dom_binding *)malloc(sizeof *ypbindlist); 366 bzero((char *)ypbindlist, sizeof *ypbindlist); 367 strncpy(ypbindlist->dom_domain, domainname, sizeof ypbindlist->dom_domain); 368 ypbindlist->dom_vers = YPVERS; 369 ypbindlist->dom_alive = 0; 370 ypbindlist->dom_lockfd = -1; 371 sprintf(path, "%s/%s.%d", BINDINGDIR, ypbindlist->dom_domain, 372 ypbindlist->dom_vers); 373 (void)unlink(path); 374 375 width = getdtablesize(); 376 while(1) { 377 fdsr = svc_fdset; 378 FD_SET(rpcsock, &fdsr); 379 tv.tv_sec = 1; 380 tv.tv_usec = 0; 381 382 switch(select(width, &fdsr, NULL, NULL, &tv)) { 383 case 0: 384 checkwork(); 385 break; 386 case -1: 387 perror("select\n"); 388 break; 389 default: 390 if(FD_ISSET(rpcsock, &fdsr)) { 391 FD_CLR(rpcsock, &fdsr); 392 handle_replies(); 393 } 394 svc_getreqset(&fdsr); 395 if(check) 396 checkwork(); 397 break; 398 } 399 } 400 } 401 402 /* 403 * change to do something like this: 404 * 405 * STATE TIME ACTION NEWTIME NEWSTATE 406 * no binding t==* broadcast t=2 no binding 407 * binding t==60 check server t=10 binding 408 * binding t=10 broadcast t=2 no binding 409 */ 410 checkwork() 411 { 412 struct _dom_binding *ypdb; 413 time_t t; 414 415 check = 0; 416 417 time(&t); 418 for(ypdb=ypbindlist; ypdb; ypdb=ypdb->dom_pnext) { 419 if(ypdb->dom_alive==0 || ypdb->dom_check_t < t) { 420 broadcast(ypdb->dom_domain); 421 time(&t); 422 ypdb->dom_check_t = t + 5; 423 } 424 } 425 } 426 427 broadcast(dom) 428 char *dom; 429 { 430 struct rpc_msg rpcmsg; 431 char buf[1400], inbuf[8192]; 432 enum clnt_stat st; 433 struct timeval tv; 434 int outlen, i, sock, len; 435 struct sockaddr_in bsin; 436 struct ifconf ifc; 437 struct ifreq ifreq, *ifr; 438 struct in_addr in; 439 AUTH *rpcua; 440 XDR rpcxdr; 441 442 rmtca.xdr_args = xdr_domainname; 443 rmtca.args_ptr = dom; 444 445 bzero((char *)&bsin, sizeof bsin); 446 bsin.sin_family = AF_INET; 447 bsin.sin_port = htons(PMAPPORT); 448 449 bzero((char *)&rpcxdr, sizeof rpcxdr); 450 bzero((char *)&rpcmsg, sizeof rpcmsg); 451 452 rpcua = authunix_create_default(); 453 if( rpcua == (AUTH *)NULL) { 454 /*printf("cannot get unix auth\n");*/ 455 return RPC_SYSTEMERROR; 456 } 457 rpcmsg.rm_direction = CALL; 458 rpcmsg.rm_call.cb_rpcvers = RPC_MSG_VERSION; 459 rpcmsg.rm_call.cb_prog = PMAPPROG; 460 rpcmsg.rm_call.cb_vers = PMAPVERS; 461 rpcmsg.rm_call.cb_proc = PMAPPROC_CALLIT; 462 rpcmsg.rm_call.cb_cred = rpcua->ah_cred; 463 rpcmsg.rm_call.cb_verf = rpcua->ah_verf; 464 465 gettimeofday(&tv, (struct timezone *)0); 466 rpcmsg.rm_xid = (int)dom; 467 tv.tv_usec = 0; 468 xdrmem_create(&rpcxdr, buf, sizeof buf, XDR_ENCODE); 469 if( (!xdr_callmsg(&rpcxdr, &rpcmsg)) ) { 470 st = RPC_CANTENCODEARGS; 471 AUTH_DESTROY(rpcua); 472 return st; 473 } 474 if( (!xdr_rmtcall_args(&rpcxdr, &rmtca)) ) { 475 st = RPC_CANTENCODEARGS; 476 AUTH_DESTROY(rpcua); 477 return st; 478 } 479 outlen = (int)xdr_getpos(&rpcxdr); 480 xdr_destroy(&rpcxdr); 481 if(outlen<1) { 482 AUTH_DESTROY(rpcua); 483 return st; 484 } 485 AUTH_DESTROY(rpcua); 486 487 /* find all networks and send the RPC packet out them all */ 488 if( (sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0) { 489 perror("socket"); 490 return -1; 491 } 492 493 ifc.ifc_len = sizeof inbuf; 494 ifc.ifc_buf = inbuf; 495 if( ioctl(sock, SIOCGIFCONF, &ifc) < 0) { 496 close(sock); 497 perror("ioctl(SIOCGIFCONF)"); 498 return -1; 499 } 500 ifr = ifc.ifc_req; 501 ifreq.ifr_name[0] = '\0'; 502 for(i=0; i<ifc.ifc_len; i+=len, ifr=(struct ifreq *)((caddr_t)ifr+len)) { 503 #if defined(BSD) && BSD >= 199103 504 len = sizeof ifr->ifr_name + ifr->ifr_addr.sa_len; 505 #else 506 len = sizeof ifc.ifc_len / sizeof(struct ifreq); 507 #endif 508 ifreq = *ifr; 509 if( ifreq.ifr_addr.sa_family != AF_INET) 510 continue; 511 if( ioctl(sock, SIOCGIFFLAGS, &ifreq) < 0) { 512 perror("ioctl(SIOCGIFFLAGS)"); 513 continue; 514 } 515 if( (ifreq.ifr_flags & IFF_UP) == 0) 516 continue; 517 518 ifreq.ifr_flags &= (IFF_LOOPBACK | IFF_BROADCAST); 519 if( ifreq.ifr_flags==IFF_BROADCAST ) { 520 if( ioctl(sock, SIOCGIFBRDADDR, &ifreq) < 0 ) { 521 perror("ioctl(SIOCGIFBRDADDR)"); 522 continue; 523 } 524 } else if( ifreq.ifr_flags==IFF_LOOPBACK ) { 525 if( ioctl(sock, SIOCGIFADDR, &ifreq) < 0 ) { 526 perror("ioctl(SIOCGIFADDR)"); 527 continue; 528 } 529 } else 530 continue; 531 532 in = ((struct sockaddr_in *)&ifreq.ifr_addr)->sin_addr; 533 bsin.sin_addr = in; 534 if( sendto(rpcsock, buf, outlen, 0, (struct sockaddr *)&bsin, 535 sizeof bsin) < 0 ) 536 perror("sendto"); 537 } 538 close(sock); 539 return 0; 540 } 541 542 /*enum clnt_stat*/ 543 handle_replies() 544 { 545 char buf[1400]; 546 int fromlen, inlen; 547 struct sockaddr_in raddr; 548 struct rpc_msg msg; 549 XDR xdr; 550 551 recv_again: 552 bzero((char *)&xdr, sizeof(xdr)); 553 bzero((char *)&msg, sizeof(msg)); 554 msg.acpted_rply.ar_verf = _null_auth; 555 msg.acpted_rply.ar_results.where = (caddr_t)&rmtcr; 556 msg.acpted_rply.ar_results.proc = xdr_rmtcallres; 557 558 try_again: 559 fromlen = sizeof (struct sockaddr); 560 inlen = recvfrom(rpcsock, buf, sizeof buf, 0, 561 (struct sockaddr *)&raddr, &fromlen); 562 if(inlen<0) { 563 if(errno==EINTR) 564 goto try_again; 565 return RPC_CANTRECV; 566 } 567 if(inlen<sizeof(u_long)) 568 goto recv_again; 569 570 /* 571 * see if reply transaction id matches sent id. 572 * If so, decode the results. 573 */ 574 xdrmem_create(&xdr, buf, (u_int)inlen, XDR_DECODE); 575 if( xdr_replymsg(&xdr, &msg)) { 576 if( (msg.rm_reply.rp_stat == MSG_ACCEPTED) && 577 (msg.acpted_rply.ar_stat == SUCCESS)) { 578 raddr.sin_port = htons((u_short)rmtcr_port); 579 rpc_received(msg.rm_xid, &raddr, 0); 580 } 581 } 582 xdr.x_op = XDR_FREE; 583 msg.acpted_rply.ar_results.proc = xdr_void; 584 xdr_destroy(&xdr); 585 586 return RPC_SUCCESS; 587 } 588 589 /* 590 * LOOPBACK IS MORE IMPORTANT: PUT IN HACK 591 */ 592 rpc_received(dom, raddrp, force) 593 char *dom; 594 struct sockaddr_in *raddrp; 595 int force; 596 { 597 struct _dom_binding *ypdb; 598 struct iovec iov[2]; 599 struct ypbind_resp ybr; 600 char path[MAXPATHLEN]; 601 int fd; 602 603 /*printf("returned from %s about %s\n", inet_ntoa(raddrp->sin_addr), dom);*/ 604 605 if(dom==NULL) 606 return; 607 608 for(ypdb=ypbindlist; ypdb; ypdb=ypdb->dom_pnext) 609 if( strcmp(ypdb->dom_domain, dom) == 0) 610 break; 611 612 if(ypdb==NULL) { 613 if(force==0) 614 return; 615 ypdb = (struct _dom_binding *)malloc(sizeof *ypdb); 616 bzero((char *)ypdb, sizeof *ypdb); 617 strncpy(ypdb->dom_domain, dom, sizeof ypdb->dom_domain); 618 ypdb->dom_lockfd = -1; 619 ypdb->dom_pnext = ypbindlist; 620 ypbindlist = ypdb; 621 } 622 623 /* soft update, alive, less than 30 seconds old */ 624 if(ypdb->dom_alive==1 && force==0 && ypdb->dom_check_t<time(NULL)+30) 625 return; 626 627 bcopy((char *)raddrp, (char *)&ypdb->dom_server_addr, 628 sizeof ypdb->dom_server_addr); 629 ypdb->dom_check_t = time(NULL) + 60; /* recheck binding in 60 seconds */ 630 ypdb->dom_vers = YPVERS; 631 ypdb->dom_alive = 1; 632 633 if(ypdb->dom_lockfd != -1) 634 close(ypdb->dom_lockfd); 635 636 sprintf(path, "%s/%s.%d", BINDINGDIR, 637 ypdb->dom_domain, ypdb->dom_vers); 638 #ifdef O_SHLOCK 639 if( (fd=open(path, O_CREAT|O_SHLOCK|O_RDWR|O_TRUNC, 0644)) == -1) { 640 (void)mkdir(BINDINGDIR, 0755); 641 if( (fd=open(path, O_CREAT|O_SHLOCK|O_RDWR|O_TRUNC, 0644)) == -1) 642 return; 643 } 644 #else 645 if( (fd=open(path, O_CREAT|O_RDWR|O_TRUNC, 0644)) == -1) { 646 (void)mkdir(BINDINGDIR, 0755); 647 if( (fd=open(path, O_CREAT|O_RDWR|O_TRUNC, 0644)) == -1) 648 return; 649 } 650 flock(fd, LOCK_SH); 651 #endif 652 653 /* 654 * ok, if BINDINGDIR exists, and we can create the binding file, 655 * then write to it.. 656 */ 657 ypdb->dom_lockfd = fd; 658 659 iov[0].iov_base = (caddr_t)&(udptransp->xp_port); 660 iov[0].iov_len = sizeof udptransp->xp_port; 661 iov[1].iov_base = (caddr_t)&ybr; 662 iov[1].iov_len = sizeof ybr; 663 664 bzero(&ybr, sizeof ybr); 665 ybr.ypbind_status = YPBIND_SUCC_VAL; 666 ybr.ypbind_respbody.ypbind_bindinfo.ypbind_binding_addr = raddrp->sin_addr; 667 ybr.ypbind_respbody.ypbind_bindinfo.ypbind_binding_port = raddrp->sin_port; 668 669 if( writev(ypdb->dom_lockfd, iov, 2) != iov[0].iov_len + iov[1].iov_len) { 670 perror("write"); 671 close(ypdb->dom_lockfd); 672 ypdb->dom_lockfd = -1; 673 return; 674 } 675 } 676
Indexes created Tue Sep 30 11:09:46 GMT 2025