1 /* 2 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for 3 * unrestricted use provided that this legend is included on all tape 4 * media and as a part of the software program in whole or part. Users 5 * may copy or modify Sun RPC without charge, but are not authorized 6 * to license or distribute it to anyone else except as part of a product or 7 * program developed by the user. 8 * 9 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE 10 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR 11 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. 12 * 13 * Sun RPC is provided with no support and without any obligation on the 14 * part of Sun Microsystems, Inc. to assist in its use, correction, 15 * modification or enhancement. 16 * 17 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE 18 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC 19 * OR ANY PART THEREOF. 20 * 21 * In no event will Sun Microsystems, Inc. be liable for any lost revenue 22 * or profits or other special, indirect and consequential damages, even if 23 * Sun has been advised of the possibility of such damages. 24 * 25 * Sun Microsystems, Inc. 26 * 2550 Garcia Avenue 27 * Mountain View, California 94043 28 * 29 * @(#)rpcbind.c 1.19 94/04/25 SMI; 1.35 89/04/21 Copyr 1984 Sun Micro 30 * $NetBSD: rpcbind.c,v 1.3 2002/11/08 00:16:40 fvdl Exp $ 31 * $FreeBSD: src/usr.sbin/rpcbind/rpcbind.c,v 1.20 2008/02/14 20:12:23 yar Exp $ 32 */ 33 /* 34 * Copyright (c) 1984 - 1991 by Sun Microsystems, Inc. 35 */ 36 37 /* 38 * rpcbind.c 39 * Implements the program, version to address mapping for rpc. 40 * 41 */ 42 43 #include <sys/types.h> 44 #include <sys/stat.h> 45 #include <sys/errno.h> 46 #include <sys/time.h> 47 #include <sys/resource.h> 48 #include <sys/wait.h> 49 #include <sys/signal.h> 50 #include <sys/socket.h> 51 #include <sys/un.h> 52 #include <rpc/rpc.h> 53 #include <rpc/rpc_com.h> 54 #ifdef PORTMAP 55 #include <netinet/in.h> 56 #endif 57 #include <arpa/inet.h> 58 #include <fcntl.h> 59 #include <netdb.h> 60 #include <stdio.h> 61 #include <netconfig.h> 62 #include <stdlib.h> 63 #include <unistd.h> 64 #include <syslog.h> 65 #include <err.h> 66 #include <libutil.h> 67 #include <pwd.h> 68 #include <string.h> 69 #include <errno.h> 70 #include "rpcbind.h" 71 72 /* Global variables */ 73 int debugging = 0; /* Tell me what's going on */ 74 int doabort = 0; /* When debugging, do an abort on errors */ 75 rpcblist_ptr list_rbl; /* A list of version 3/4 rpcbind services */ 76 77 /* who to suid to if -s is given */ 78 #define RUN_AS "daemon" 79 80 #define RPCBINDDLOCK "/var/run/rpcbind.lock" 81 82 int runasdaemon = 0; 83 int insecure = 0; 84 int oldstyle_local = 0; 85 int verboselog = 0; 86 87 char **hosts = NULL; 88 int ipv6_only = 0; 89 int nhosts = 0; 90 int on = 1; 91 int rpcbindlockfd; 92 93 #ifdef WARMSTART 94 /* Local Variable */ 95 static int warmstart = 0; /* Grab an old copy of registrations. */ 96 #endif 97 98 #ifdef PORTMAP 99 struct pmaplist *list_pml; /* A list of version 2 rpcbind services */ 100 char *udptrans; /* Name of UDP transport */ 101 char *tcptrans; /* Name of TCP transport */ 102 char *udp_uaddr; /* Universal UDP address */ 103 char *tcp_uaddr; /* Universal TCP address */ 104 #endif 105 static char servname[] = "rpcbind"; 106 static char superuser[] = "superuser"; 107 108 static int init_transport(struct netconfig *); 109 static void rbllist_add(rpcprog_t, rpcvers_t, struct netconfig *, 110 struct netbuf *); 111 static void terminate(int); 112 static void parseargs(int, char *[]); 113 114 int 115 main(int argc, char *argv[]) 116 { 117 struct netconfig *nconf; 118 void *nc_handle; /* Net config handle */ 119 struct rlimit rl; 120 int maxrec = RPC_MAXDATASIZE; 121 122 parseargs(argc, argv); 123 124 /* Check that another rpcbind isn't already running. */ 125 if ((rpcbindlockfd = (open(RPCBINDDLOCK, 126 O_RDONLY|O_CREAT, 0444))) == -1) 127 err(1, "%s", RPCBINDDLOCK); 128 129 if(flock(rpcbindlockfd, LOCK_EX|LOCK_NB) == -1 && errno == EWOULDBLOCK) 130 errx(1, "another rpcbind is already running. Aborting"); 131 132 getrlimit(RLIMIT_NOFILE, &rl); 133 if (rl.rlim_cur < 128) { 134 if (rl.rlim_max <= 128) 135 rl.rlim_cur = rl.rlim_max; 136 else 137 rl.rlim_cur = 128; 138 setrlimit(RLIMIT_NOFILE, &rl); 139 } 140 openlog("rpcbind", LOG_CONS, LOG_DAEMON); 141 if (geteuid()) { /* This command allowed only to root */ 142 fprintf(stderr, "Sorry. You are not superuser\n"); 143 exit(1); 144 } 145 nc_handle = setnetconfig(); /* open netconfig file */ 146 if (nc_handle == NULL) { 147 syslog(LOG_ERR, "could not read /etc/netconfig"); 148 exit(1); 149 } 150 #ifdef PORTMAP 151 udptrans = ""; 152 tcptrans = ""; 153 #endif 154 155 nconf = getnetconfigent("local"); 156 if (nconf == NULL) 157 nconf = getnetconfigent("unix"); 158 if (nconf == NULL) { 159 syslog(LOG_ERR, "%s: can't find local transport\n", argv[0]); 160 exit(1); 161 } 162 163 rpc_control(RPC_SVC_CONNMAXREC_SET, &maxrec); 164 165 init_transport(nconf); 166 167 while ((nconf = getnetconfig(nc_handle))) { 168 if (nconf->nc_flag & NC_VISIBLE) 169 if (ipv6_only == 1 && strcmp(nconf->nc_protofmly, 170 "inet") == 0) { 171 /* DO NOTHING */ 172 } else 173 init_transport(nconf); 174 } 175 endnetconfig(nc_handle); 176 177 /* catch the usual termination signals for graceful exit */ 178 signal(SIGCHLD, reap); 179 signal(SIGINT, terminate); 180 signal(SIGTERM, terminate); 181 signal(SIGQUIT, terminate); 182 /* ignore others that could get sent */ 183 signal(SIGPIPE, SIG_IGN); 184 signal(SIGHUP, SIG_IGN); 185 signal(SIGUSR1, SIG_IGN); 186 signal(SIGUSR2, SIG_IGN); 187 #ifdef WARMSTART 188 if (warmstart) { 189 read_warmstart(); 190 } 191 #endif 192 if (debugging) { 193 printf("rpcbind debugging enabled."); 194 if (doabort) { 195 printf(" Will abort on errors!\n"); 196 } else { 197 printf("\n"); 198 } 199 } else { 200 if (daemon(0, 0)) 201 err(1, "fork failed"); 202 } 203 204 if (runasdaemon) { 205 struct passwd *p; 206 207 if((p = getpwnam(RUN_AS)) == NULL) { 208 syslog(LOG_ERR, "cannot get uid of daemon: %m"); 209 exit(1); 210 } 211 if (setuid(p->pw_uid) == -1) { 212 syslog(LOG_ERR, "setuid to daemon failed: %m"); 213 exit(1); 214 } 215 } 216 217 network_init(); 218 219 my_svc_run(); 220 syslog(LOG_ERR, "svc_run returned unexpectedly"); 221 rpcbind_abort(); 222 /* NOTREACHED */ 223 224 return 0; 225 } 226 227 /* 228 * Adds the entry into the rpcbind database. 229 * If PORTMAP, then for UDP and TCP, it adds the entries for version 2 also 230 * Returns 0 if succeeds, else fails 231 */ 232 static int 233 init_transport(struct netconfig *nconf) 234 { 235 int fd; 236 struct t_bind taddr; 237 struct addrinfo hints, *res = NULL; 238 struct __rpc_sockinfo si; 239 SVCXPRT *my_xprt; 240 int status; /* bound checking ? */ 241 int aicode; 242 int addrlen; 243 int nhostsbak; 244 int bound; 245 struct sockaddr *sa; 246 u_int32_t host_addr[4]; /* IPv4 or IPv6 */ 247 struct sockaddr_un sun; 248 mode_t oldmask; 249 250 if ((nconf->nc_semantics != NC_TPI_CLTS) && 251 (nconf->nc_semantics != NC_TPI_COTS) && 252 (nconf->nc_semantics != NC_TPI_COTS_ORD)) 253 return (1); /* not my type */ 254 #ifdef ND_DEBUG 255 if (debugging) { 256 int i; 257 char **s; 258 259 fprintf(stderr, "%s: %ld lookup routines :\n", 260 nconf->nc_netid, nconf->nc_nlookups); 261 for (i = 0, s = nconf->nc_lookups; i < nconf->nc_nlookups; 262 i++, s++) 263 fprintf(stderr, "[%d] - %s\n", i, *s); 264 } 265 #endif 266 267 /* 268 * XXX - using RPC library internal functions. 269 */ 270 if ((strcmp(nconf->nc_netid, "local") == 0) || 271 (strcmp(nconf->nc_netid, "unix") == 0)) { 272 /* 273 * For other transports we call this later, for each socket we 274 * like to bind. 275 */ 276 if ((fd = __rpc_nconf2fd(nconf)) < 0) { 277 int non_fatal = 0; 278 if (errno == EPROTONOSUPPORT) 279 non_fatal = 1; 280 syslog(non_fatal?LOG_DEBUG:LOG_ERR, "cannot create socket for %s", 281 nconf->nc_netid); 282 return (1); 283 } 284 } 285 286 if (!__rpc_nconf2sockinfo(nconf, &si)) { 287 syslog(LOG_ERR, "cannot get information for %s", 288 nconf->nc_netid); 289 return (1); 290 } 291 292 if ((strcmp(nconf->nc_netid, "local") == 0) || 293 (strcmp(nconf->nc_netid, "unix") == 0)) { 294 memset(&sun, 0, sizeof sun); 295 sun.sun_family = AF_LOCAL; 296 unlink(_PATH_RPCBINDSOCK); 297 strcpy(sun.sun_path, _PATH_RPCBINDSOCK); 298 sun.sun_len = SUN_LEN(&sun); 299 addrlen = sizeof (struct sockaddr_un); 300 sa = (struct sockaddr *)&sun; 301 } else { 302 /* Get rpcbind's address on this transport */ 303 304 memset(&hints, 0, sizeof hints); 305 hints.ai_flags = AI_PASSIVE; 306 hints.ai_family = si.si_af; 307 hints.ai_socktype = si.si_socktype; 308 hints.ai_protocol = si.si_proto; 309 } 310 311 if ((strcmp(nconf->nc_netid, "local") != 0) && 312 (strcmp(nconf->nc_netid, "unix") != 0)) { 313 /* 314 * If no hosts were specified, just bind to INADDR_ANY. 315 * Otherwise make sure 127.0.0.1 is added to the list. 316 */ 317 nhostsbak = nhosts; 318 nhostsbak++; 319 hosts = realloc(hosts, nhostsbak * sizeof(char *)); 320 if (nhostsbak == 1) 321 hosts[0] = "*"; 322 else { 323 if (hints.ai_family == AF_INET) { 324 hosts[nhostsbak - 1] = "127.0.0.1"; 325 } else if (hints.ai_family == AF_INET6) { 326 hosts[nhostsbak - 1] = "::1"; 327 } else 328 return 1; 329 } 330 331 /* 332 * Bind to specific IPs if asked to 333 */ 334 bound = 0; 335 while (nhostsbak > 0) { 336 --nhostsbak; 337 /* 338 * XXX - using RPC library internal functions. 339 */ 340 if ((fd = __rpc_nconf2fd(nconf)) < 0) { 341 int non_fatal = 0; 342 if (errno == EPROTONOSUPPORT && 343 nconf->nc_semantics != NC_TPI_CLTS) 344 non_fatal = 1; 345 syslog(non_fatal ? LOG_DEBUG : LOG_ERR, 346 "cannot create socket for %s", nconf->nc_netid); 347 return (1); 348 } 349 switch (hints.ai_family) { 350 case AF_INET: 351 if (inet_pton(AF_INET, hosts[nhostsbak], 352 host_addr) == 1) { 353 hints.ai_flags &= AI_NUMERICHOST; 354 } else { 355 /* 356 * Skip if we have an AF_INET6 address. 357 */ 358 if (inet_pton(AF_INET6, 359 hosts[nhostsbak], host_addr) == 1) { 360 close(fd); 361 continue; 362 } 363 } 364 break; 365 case AF_INET6: 366 if (inet_pton(AF_INET6, hosts[nhostsbak], 367 host_addr) == 1) { 368 hints.ai_flags &= AI_NUMERICHOST; 369 } else { 370 /* 371 * Skip if we have an AF_INET address. 372 */ 373 if (inet_pton(AF_INET, hosts[nhostsbak], 374 host_addr) == 1) { 375 close(fd); 376 continue; 377 } 378 } 379 if (setsockopt(fd, IPPROTO_IPV6, 380 IPV6_V6ONLY, &on, sizeof on) < 0) { 381 syslog(LOG_ERR, 382 "can't set v6-only binding for " 383 "ipv6 socket: %m"); 384 continue; 385 } 386 break; 387 default: 388 break; 389 } 390 391 /* 392 * If no hosts were specified, just bind to INADDR_ANY 393 */ 394 if (strcmp("*", hosts[nhostsbak]) == 0) 395 hosts[nhostsbak] = NULL; 396 if ((strcmp(nconf->nc_netid, "local") != 0) && 397 (strcmp(nconf->nc_netid, "unix") != 0)) { 398 if ((aicode = getaddrinfo(hosts[nhostsbak], 399 servname, &hints, &res)) != 0) { 400 syslog(LOG_ERR, 401 "cannot get local address for %s: %s", 402 nconf->nc_netid, gai_strerror(aicode)); 403 continue; 404 } 405 addrlen = res->ai_addrlen; 406 sa = (struct sockaddr *)res->ai_addr; 407 } 408 oldmask = umask(S_IXUSR|S_IXGRP|S_IXOTH); 409 if (bind(fd, sa, addrlen) != 0) { 410 syslog(LOG_ERR, "cannot bind %s on %s: %m", 411 (hosts[nhostsbak] == NULL) ? "*" : 412 hosts[nhostsbak], nconf->nc_netid); 413 if (res != NULL) 414 freeaddrinfo(res); 415 continue; 416 } else 417 bound = 1; 418 umask(oldmask); 419 420 /* Copy the address */ 421 taddr.addr.len = taddr.addr.maxlen = addrlen; 422 taddr.addr.buf = malloc(addrlen); 423 if (taddr.addr.buf == NULL) { 424 syslog(LOG_ERR, 425 "cannot allocate memory for %s address", 426 nconf->nc_netid); 427 if (res != NULL) 428 freeaddrinfo(res); 429 return 1; 430 } 431 memcpy(taddr.addr.buf, sa, addrlen); 432 #ifdef ND_DEBUG 433 if (debugging) { 434 /* 435 * for debugging print out our universal 436 * address 437 */ 438 char *uaddr; 439 struct netbuf nb; 440 441 nb.buf = sa; 442 nb.len = nb.maxlen = sa->sa_len; 443 uaddr = taddr2uaddr(nconf, &nb); 444 fprintf(stderr, "rpcbind : my address is %s\n", uaddr); 445 free(uaddr); 446 } 447 #endif 448 449 if (nconf->nc_semantics != NC_TPI_CLTS) 450 listen(fd, SOMAXCONN); 451 452 my_xprt = (SVCXPRT *)svc_tli_create(fd, nconf, &taddr, 453 RPC_MAXDATASIZE, RPC_MAXDATASIZE); 454 if (my_xprt == NULL) { 455 syslog(LOG_ERR, "%s: could not create service", 456 nconf->nc_netid); 457 goto error; 458 } 459 } 460 if (!bound) 461 return 1; 462 } else { 463 oldmask = umask(S_IXUSR|S_IXGRP|S_IXOTH); 464 if (bind(fd, sa, addrlen) < 0) { 465 syslog(LOG_ERR, "cannot bind %s: %m", nconf->nc_netid); 466 if (res != NULL) 467 freeaddrinfo(res); 468 return 1; 469 } 470 umask(oldmask); 471 472 /* Copy the address */ 473 taddr.addr.len = taddr.addr.maxlen = addrlen; 474 taddr.addr.buf = malloc(addrlen); 475 if (taddr.addr.buf == NULL) { 476 syslog(LOG_ERR, "cannot allocate memory for %s address", 477 nconf->nc_netid); 478 if (res != NULL) 479 freeaddrinfo(res); 480 return 1; 481 } 482 memcpy(taddr.addr.buf, sa, addrlen); 483 #ifdef ND_DEBUG 484 if (debugging) { 485 /* for debugging print out our universal address */ 486 char *uaddr; 487 struct netbuf nb; 488 489 nb.buf = sa; 490 nb.len = nb.maxlen = sa->sa_len; 491 uaddr = taddr2uaddr(nconf, &nb); 492 fprintf(stderr, "rpcbind : my address is %s\n", uaddr); 493 free(uaddr); 494 } 495 #endif 496 497 if (nconf->nc_semantics != NC_TPI_CLTS) 498 listen(fd, SOMAXCONN); 499 500 my_xprt = (SVCXPRT *)svc_tli_create(fd, nconf, &taddr, 501 RPC_MAXDATASIZE, RPC_MAXDATASIZE); 502 if (my_xprt == NULL) { 503 syslog(LOG_ERR, "%s: could not create service", 504 nconf->nc_netid); 505 goto error; 506 } 507 } 508 509 #ifdef PORTMAP 510 /* 511 * Register both the versions for tcp/ip, udp/ip and local. 512 */ 513 if ((strcmp(nconf->nc_protofmly, NC_INET) == 0 && 514 (strcmp(nconf->nc_proto, NC_TCP) == 0 || 515 strcmp(nconf->nc_proto, NC_UDP) == 0)) || 516 (strcmp(nconf->nc_netid, "unix") == 0) || 517 (strcmp(nconf->nc_netid, "local") == 0)) { 518 struct pmaplist *pml; 519 520 if (!svc_register(my_xprt, PMAPPROG, PMAPVERS, 521 pmap_service, 0)) { 522 syslog(LOG_ERR, "could not register on %s", 523 nconf->nc_netid); 524 goto error; 525 } 526 pml = malloc(sizeof (struct pmaplist)); 527 if (pml == NULL) { 528 syslog(LOG_ERR, "no memory!"); 529 exit(1); 530 } 531 pml->pml_map.pm_prog = PMAPPROG; 532 pml->pml_map.pm_vers = PMAPVERS; 533 pml->pml_map.pm_port = PMAPPORT; 534 if (strcmp(nconf->nc_proto, NC_TCP) == 0) { 535 if (tcptrans[0]) { 536 syslog(LOG_ERR, 537 "cannot have more than one TCP transport"); 538 goto error; 539 } 540 tcptrans = strdup(nconf->nc_netid); 541 pml->pml_map.pm_prot = IPPROTO_TCP; 542 543 /* Let's snarf the universal address */ 544 /* "h1.h2.h3.h4.p1.p2" */ 545 tcp_uaddr = taddr2uaddr(nconf, &taddr.addr); 546 } else if (strcmp(nconf->nc_proto, NC_UDP) == 0) { 547 if (udptrans[0]) { 548 syslog(LOG_ERR, 549 "cannot have more than one UDP transport"); 550 goto error; 551 } 552 udptrans = strdup(nconf->nc_netid); 553 pml->pml_map.pm_prot = IPPROTO_UDP; 554 555 /* Let's snarf the universal address */ 556 /* "h1.h2.h3.h4.p1.p2" */ 557 udp_uaddr = taddr2uaddr(nconf, &taddr.addr); 558 } else if (strcmp(nconf->nc_netid, "local") == 0) 559 pml->pml_map.pm_prot = IPPROTO_ST; 560 else if (strcmp(nconf->nc_netid, "unix") == 0) 561 pml->pml_map.pm_prot = IPPROTO_ST; 562 pml->pml_next = list_pml; 563 list_pml = pml; 564 565 /* Add version 3 information */ 566 pml = malloc(sizeof (struct pmaplist)); 567 if (pml == NULL) { 568 syslog(LOG_ERR, "no memory!"); 569 exit(1); 570 } 571 pml->pml_map = list_pml->pml_map; 572 pml->pml_map.pm_vers = RPCBVERS; 573 pml->pml_next = list_pml; 574 list_pml = pml; 575 576 /* Add version 4 information */ 577 pml = malloc (sizeof (struct pmaplist)); 578 if (pml == NULL) { 579 syslog(LOG_ERR, "no memory!"); 580 exit(1); 581 } 582 pml->pml_map = list_pml->pml_map; 583 pml->pml_map.pm_vers = RPCBVERS4; 584 pml->pml_next = list_pml; 585 list_pml = pml; 586 587 /* Also add version 2 stuff to rpcbind list */ 588 rbllist_add(PMAPPROG, PMAPVERS, nconf, &taddr.addr); 589 } 590 #endif 591 592 /* version 3 registration */ 593 if (!svc_reg(my_xprt, RPCBPROG, RPCBVERS, rpcb_service_3, NULL)) { 594 syslog(LOG_ERR, "could not register %s version 3", 595 nconf->nc_netid); 596 goto error; 597 } 598 rbllist_add(RPCBPROG, RPCBVERS, nconf, &taddr.addr); 599 600 /* version 4 registration */ 601 if (!svc_reg(my_xprt, RPCBPROG, RPCBVERS4, rpcb_service_4, NULL)) { 602 syslog(LOG_ERR, "could not register %s version 4", 603 nconf->nc_netid); 604 goto error; 605 } 606 rbllist_add(RPCBPROG, RPCBVERS4, nconf, &taddr.addr); 607 608 /* decide if bound checking works for this transport */ 609 status = add_bndlist(nconf, &taddr.addr); 610 #ifdef BIND_DEBUG 611 if (debugging) { 612 if (status < 0) { 613 fprintf(stderr, "Error in finding bind status for %s\n", 614 nconf->nc_netid); 615 } else if (status == 0) { 616 fprintf(stderr, "check binding for %s\n", 617 nconf->nc_netid); 618 } else if (status > 0) { 619 fprintf(stderr, "No check binding for %s\n", 620 nconf->nc_netid); 621 } 622 } 623 #endif 624 /* 625 * rmtcall only supported on CLTS transports for now. 626 */ 627 if (nconf->nc_semantics == NC_TPI_CLTS) { 628 status = create_rmtcall_fd(nconf); 629 630 #ifdef BIND_DEBUG 631 if (debugging) { 632 if (status < 0) { 633 fprintf(stderr, 634 "Could not create rmtcall fd for %s\n", 635 nconf->nc_netid); 636 } else { 637 fprintf(stderr, "rmtcall fd for %s is %d\n", 638 nconf->nc_netid, status); 639 } 640 } 641 #endif 642 } 643 return (0); 644 error: 645 close(fd); 646 return (1); 647 } 648 649 static void 650 rbllist_add(rpcprog_t prog, rpcvers_t vers, struct netconfig *nconf, 651 struct netbuf *addr) 652 { 653 rpcblist_ptr rbl; 654 655 rbl = malloc(sizeof (rpcblist)); 656 if (rbl == NULL) { 657 syslog(LOG_ERR, "no memory!"); 658 exit(1); 659 } 660 661 rbl->rpcb_map.r_prog = prog; 662 rbl->rpcb_map.r_vers = vers; 663 rbl->rpcb_map.r_netid = strdup(nconf->nc_netid); 664 rbl->rpcb_map.r_addr = taddr2uaddr(nconf, addr); 665 rbl->rpcb_map.r_owner = strdup(superuser); 666 rbl->rpcb_next = list_rbl; /* Attach to global list */ 667 list_rbl = rbl; 668 } 669 670 /* 671 * Catch the signal and die 672 */ 673 static void 674 terminate(int dummy __unused) 675 { 676 close(rpcbindlockfd); 677 #ifdef WARMSTART 678 syslog(LOG_ERR, 679 "rpcbind terminating on signal. Restart with \"rpcbind -w\""); 680 write_warmstart(); /* Dump yourself */ 681 #endif 682 exit(2); 683 } 684 685 void 686 rpcbind_abort(void) 687 { 688 #ifdef WARMSTART 689 write_warmstart(); /* Dump yourself */ 690 #endif 691 abort(); 692 } 693 694 /* get command line options */ 695 static void 696 parseargs(int argc, char *argv[]) 697 { 698 int c; 699 700 #ifdef WARMSTART 701 #define WSOP "w" 702 #else 703 #define WSOP "" 704 #endif 705 while ((c = getopt(argc, argv, "6adh:iLls" WSOP)) != -1) { 706 switch (c) { 707 case '6': 708 ipv6_only = 1; 709 break; 710 case 'a': 711 doabort = 1; /* when debugging, do an abort on */ 712 break; /* errors; for rpcbind developers */ 713 /* only! */ 714 case 'd': 715 debugging = 1; 716 break; 717 case 'h': 718 ++nhosts; 719 hosts = realloc(hosts, nhosts * sizeof(char *)); 720 if (hosts == NULL) 721 errx(1, "Out of memory"); 722 hosts[nhosts - 1] = strdup(optarg); 723 if (hosts[nhosts - 1] == NULL) 724 errx(1, "Out of memory"); 725 break; 726 case 'i': 727 insecure = 1; 728 break; 729 case 'L': 730 oldstyle_local = 1; 731 break; 732 case 'l': 733 verboselog = 1; 734 break; 735 case 's': 736 runasdaemon = 1; 737 break; 738 #ifdef WARMSTART 739 case 'w': 740 warmstart = 1; 741 break; 742 #endif 743 default: /* error */ 744 fprintf(stderr, 745 "usage: rpcbind [-6adiLls%s] [-h bindip]\n", 746 WSOP); 747 exit (1); 748 } 749 } 750 if (doabort && !debugging) { 751 fprintf(stderr, 752 "-a (abort) specified without -d (debugging) -- ignored.\n"); 753 doabort = 0; 754 } 755 #undef WSOP 756 } 757 758 void 759 reap(int dummy __unused) 760 { 761 int save_errno = errno; 762 763 while (wait3(NULL, WNOHANG, NULL) > 0) 764 ; 765 errno = save_errno; 766 } 767 768 void 769 toggle_verboselog(int dummy __unused) 770 { 771 verboselog = !verboselog; 772 } 773