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, "inet") != 0) 170 init_transport(nconf); 171 } 172 endnetconfig(nc_handle); 173 174 /* catch the usual termination signals for graceful exit */ 175 signal(SIGCHLD, reap); 176 signal(SIGINT, terminate); 177 signal(SIGTERM, terminate); 178 signal(SIGQUIT, terminate); 179 /* ignore others that could get sent */ 180 signal(SIGPIPE, SIG_IGN); 181 signal(SIGHUP, SIG_IGN); 182 signal(SIGUSR1, SIG_IGN); 183 signal(SIGUSR2, SIG_IGN); 184 #ifdef WARMSTART 185 if (warmstart) { 186 read_warmstart(); 187 } 188 #endif 189 if (debugging) { 190 printf("rpcbind debugging enabled."); 191 if (doabort) { 192 printf(" Will abort on errors!\n"); 193 } else { 194 printf("\n"); 195 } 196 } else { 197 if (daemon(0, 0)) 198 err(1, "fork failed"); 199 } 200 201 if (runasdaemon) { 202 struct passwd *p; 203 204 if((p = getpwnam(RUN_AS)) == NULL) { 205 syslog(LOG_ERR, "cannot get uid of daemon: %m"); 206 exit(1); 207 } 208 if (setuid(p->pw_uid) == -1) { 209 syslog(LOG_ERR, "setuid to daemon failed: %m"); 210 exit(1); 211 } 212 } 213 214 network_init(); 215 216 my_svc_run(); 217 syslog(LOG_ERR, "svc_run returned unexpectedly"); 218 rpcbind_abort(); 219 /* NOTREACHED */ 220 221 return 0; 222 } 223 224 /* 225 * Adds the entry into the rpcbind database. 226 * If PORTMAP, then for UDP and TCP, it adds the entries for version 2 also 227 * Returns 0 if succeeds, else fails 228 */ 229 static int 230 init_transport(struct netconfig *nconf) 231 { 232 int fd; 233 struct t_bind taddr; 234 struct addrinfo hints, *res = NULL; 235 struct __rpc_sockinfo si; 236 SVCXPRT *my_xprt; 237 int status; /* bound checking ? */ 238 int aicode; 239 int addrlen; 240 int nhostsbak; 241 int bound; 242 struct sockaddr *sa; 243 u_int32_t host_addr[4]; /* IPv4 or IPv6 */ 244 struct sockaddr_un sun; 245 mode_t oldmask; 246 247 if ((nconf->nc_semantics != NC_TPI_CLTS) && 248 (nconf->nc_semantics != NC_TPI_COTS) && 249 (nconf->nc_semantics != NC_TPI_COTS_ORD)) 250 return (1); /* not my type */ 251 #ifdef ND_DEBUG 252 if (debugging) { 253 int i; 254 char **s; 255 256 fprintf(stderr, "%s: %ld lookup routines :\n", 257 nconf->nc_netid, nconf->nc_nlookups); 258 for (i = 0, s = nconf->nc_lookups; i < nconf->nc_nlookups; 259 i++, s++) 260 fprintf(stderr, "[%d] - %s\n", i, *s); 261 } 262 #endif 263 264 /* 265 * XXX - using RPC library internal functions. 266 */ 267 if ((strcmp(nconf->nc_netid, "local") == 0) || 268 (strcmp(nconf->nc_netid, "unix") == 0)) { 269 /* 270 * For other transports we call this later, for each socket we 271 * like to bind. 272 */ 273 if ((fd = __rpc_nconf2fd(nconf)) < 0) { 274 int non_fatal = 0; 275 if (errno == EPROTONOSUPPORT) 276 non_fatal = 1; 277 syslog(non_fatal?LOG_DEBUG:LOG_ERR, "cannot create socket for %s", 278 nconf->nc_netid); 279 return (1); 280 } 281 } 282 283 if (!__rpc_nconf2sockinfo(nconf, &si)) { 284 syslog(LOG_ERR, "cannot get information for %s", 285 nconf->nc_netid); 286 return (1); 287 } 288 289 if ((strcmp(nconf->nc_netid, "local") == 0) || 290 (strcmp(nconf->nc_netid, "unix") == 0)) { 291 memset(&sun, 0, sizeof sun); 292 sun.sun_family = AF_LOCAL; 293 unlink(_PATH_RPCBINDSOCK); 294 strcpy(sun.sun_path, _PATH_RPCBINDSOCK); 295 sun.sun_len = SUN_LEN(&sun); 296 addrlen = sizeof (struct sockaddr_un); 297 sa = (struct sockaddr *)&sun; 298 } else { 299 /* Get rpcbind's address on this transport */ 300 301 memset(&hints, 0, sizeof hints); 302 hints.ai_flags = AI_PASSIVE; 303 hints.ai_family = si.si_af; 304 hints.ai_socktype = si.si_socktype; 305 hints.ai_protocol = si.si_proto; 306 } 307 308 if ((strcmp(nconf->nc_netid, "local") != 0) && 309 (strcmp(nconf->nc_netid, "unix") != 0)) { 310 /* 311 * If no hosts were specified, just bind to INADDR_ANY. 312 * Otherwise make sure 127.0.0.1 is added to the list. 313 */ 314 nhostsbak = nhosts; 315 nhostsbak++; 316 hosts = realloc(hosts, nhostsbak * sizeof(char *)); 317 if (nhostsbak == 1) 318 hosts[0] = "*"; 319 else { 320 if (hints.ai_family == AF_INET) { 321 hosts[nhostsbak - 1] = "127.0.0.1"; 322 } else if (hints.ai_family == AF_INET6) { 323 hosts[nhostsbak - 1] = "::1"; 324 } else 325 return 1; 326 } 327 328 /* 329 * Bind to specific IPs if asked to 330 */ 331 bound = 0; 332 while (nhostsbak > 0) { 333 --nhostsbak; 334 /* 335 * XXX - using RPC library internal functions. 336 */ 337 if ((fd = __rpc_nconf2fd(nconf)) < 0) { 338 int non_fatal = 0; 339 if (errno == EPROTONOSUPPORT && 340 nconf->nc_semantics != NC_TPI_CLTS) 341 non_fatal = 1; 342 syslog(non_fatal ? LOG_DEBUG : LOG_ERR, 343 "cannot create socket for %s", nconf->nc_netid); 344 return (1); 345 } 346 switch (hints.ai_family) { 347 case AF_INET: 348 if (inet_pton(AF_INET, hosts[nhostsbak], 349 host_addr) == 1) { 350 hints.ai_flags &= AI_NUMERICHOST; 351 } else { 352 /* 353 * Skip if we have an AF_INET6 address. 354 */ 355 if (inet_pton(AF_INET6, 356 hosts[nhostsbak], host_addr) == 1) { 357 close(fd); 358 continue; 359 } 360 } 361 break; 362 case AF_INET6: 363 if (inet_pton(AF_INET6, hosts[nhostsbak], 364 host_addr) == 1) { 365 hints.ai_flags &= AI_NUMERICHOST; 366 } else { 367 /* 368 * Skip if we have an AF_INET address. 369 */ 370 if (inet_pton(AF_INET, hosts[nhostsbak], 371 host_addr) == 1) { 372 close(fd); 373 continue; 374 } 375 } 376 if (setsockopt(fd, IPPROTO_IPV6, 377 IPV6_V6ONLY, &on, sizeof on) < 0) { 378 syslog(LOG_ERR, 379 "can't set v6-only binding for " 380 "ipv6 socket: %m"); 381 continue; 382 } 383 break; 384 default: 385 break; 386 } 387 388 /* 389 * If no hosts were specified, just bind to INADDR_ANY 390 */ 391 if (strcmp("*", hosts[nhostsbak]) == 0) 392 hosts[nhostsbak] = NULL; 393 if ((strcmp(nconf->nc_netid, "local") != 0) && 394 (strcmp(nconf->nc_netid, "unix") != 0)) { 395 if ((aicode = getaddrinfo(hosts[nhostsbak], 396 servname, &hints, &res)) != 0) { 397 syslog(LOG_ERR, 398 "cannot get local address for %s: %s", 399 nconf->nc_netid, gai_strerror(aicode)); 400 continue; 401 } 402 addrlen = res->ai_addrlen; 403 sa = (struct sockaddr *)res->ai_addr; 404 } 405 oldmask = umask(S_IXUSR|S_IXGRP|S_IXOTH); 406 if (bind(fd, sa, addrlen) != 0) { 407 syslog(LOG_ERR, "cannot bind %s on %s: %m", 408 (hosts[nhostsbak] == NULL) ? "*" : 409 hosts[nhostsbak], nconf->nc_netid); 410 if (res != NULL) 411 freeaddrinfo(res); 412 continue; 413 } else 414 bound = 1; 415 umask(oldmask); 416 417 /* Copy the address */ 418 taddr.addr.len = taddr.addr.maxlen = addrlen; 419 taddr.addr.buf = malloc(addrlen); 420 if (taddr.addr.buf == NULL) { 421 syslog(LOG_ERR, 422 "cannot allocate memory for %s address", 423 nconf->nc_netid); 424 if (res != NULL) 425 freeaddrinfo(res); 426 return 1; 427 } 428 memcpy(taddr.addr.buf, sa, addrlen); 429 #ifdef ND_DEBUG 430 if (debugging) { 431 /* 432 * for debugging print out our universal 433 * address 434 */ 435 char *uaddr; 436 struct netbuf nb; 437 438 nb.buf = sa; 439 nb.len = nb.maxlen = sa->sa_len; 440 uaddr = taddr2uaddr(nconf, &nb); 441 fprintf(stderr, "rpcbind : my address is %s\n", uaddr); 442 free(uaddr); 443 } 444 #endif 445 446 if (nconf->nc_semantics != NC_TPI_CLTS) 447 listen(fd, SOMAXCONN); 448 449 my_xprt = (SVCXPRT *)svc_tli_create(fd, nconf, &taddr, 450 RPC_MAXDATASIZE, RPC_MAXDATASIZE); 451 if (my_xprt == NULL) { 452 syslog(LOG_ERR, "%s: could not create service", 453 nconf->nc_netid); 454 goto error; 455 } 456 } 457 if (!bound) 458 return 1; 459 } else { 460 oldmask = umask(S_IXUSR|S_IXGRP|S_IXOTH); 461 if (bind(fd, sa, addrlen) < 0) { 462 syslog(LOG_ERR, "cannot bind %s: %m", nconf->nc_netid); 463 if (res != NULL) 464 freeaddrinfo(res); 465 return 1; 466 } 467 umask(oldmask); 468 469 /* Copy the address */ 470 taddr.addr.len = taddr.addr.maxlen = addrlen; 471 taddr.addr.buf = malloc(addrlen); 472 if (taddr.addr.buf == NULL) { 473 syslog(LOG_ERR, "cannot allocate memory for %s address", 474 nconf->nc_netid); 475 if (res != NULL) 476 freeaddrinfo(res); 477 return 1; 478 } 479 memcpy(taddr.addr.buf, sa, addrlen); 480 #ifdef ND_DEBUG 481 if (debugging) { 482 /* for debugging print out our universal address */ 483 char *uaddr; 484 struct netbuf nb; 485 486 nb.buf = sa; 487 nb.len = nb.maxlen = sa->sa_len; 488 uaddr = taddr2uaddr(nconf, &nb); 489 fprintf(stderr, "rpcbind : my address is %s\n", uaddr); 490 free(uaddr); 491 } 492 #endif 493 494 if (nconf->nc_semantics != NC_TPI_CLTS) 495 listen(fd, SOMAXCONN); 496 497 my_xprt = (SVCXPRT *)svc_tli_create(fd, nconf, &taddr, 498 RPC_MAXDATASIZE, RPC_MAXDATASIZE); 499 if (my_xprt == NULL) { 500 syslog(LOG_ERR, "%s: could not create service", 501 nconf->nc_netid); 502 goto error; 503 } 504 } 505 506 #ifdef PORTMAP 507 /* 508 * Register both the versions for tcp/ip, udp/ip and local. 509 */ 510 if ((strcmp(nconf->nc_protofmly, NC_INET) == 0 && 511 (strcmp(nconf->nc_proto, NC_TCP) == 0 || 512 strcmp(nconf->nc_proto, NC_UDP) == 0)) || 513 (strcmp(nconf->nc_netid, "unix") == 0) || 514 (strcmp(nconf->nc_netid, "local") == 0)) { 515 struct pmaplist *pml; 516 517 if (!svc_register(my_xprt, PMAPPROG, PMAPVERS, 518 pmap_service, 0)) { 519 syslog(LOG_ERR, "could not register on %s", 520 nconf->nc_netid); 521 goto error; 522 } 523 pml = malloc(sizeof (struct pmaplist)); 524 if (pml == NULL) { 525 syslog(LOG_ERR, "no memory!"); 526 exit(1); 527 } 528 pml->pml_map.pm_prog = PMAPPROG; 529 pml->pml_map.pm_vers = PMAPVERS; 530 pml->pml_map.pm_port = PMAPPORT; 531 if (strcmp(nconf->nc_proto, NC_TCP) == 0) { 532 if (tcptrans[0]) { 533 syslog(LOG_ERR, 534 "cannot have more than one TCP transport"); 535 goto error; 536 } 537 tcptrans = strdup(nconf->nc_netid); 538 pml->pml_map.pm_prot = IPPROTO_TCP; 539 540 /* Let's snarf the universal address */ 541 /* "h1.h2.h3.h4.p1.p2" */ 542 tcp_uaddr = taddr2uaddr(nconf, &taddr.addr); 543 } else if (strcmp(nconf->nc_proto, NC_UDP) == 0) { 544 if (udptrans[0]) { 545 syslog(LOG_ERR, 546 "cannot have more than one UDP transport"); 547 goto error; 548 } 549 udptrans = strdup(nconf->nc_netid); 550 pml->pml_map.pm_prot = IPPROTO_UDP; 551 552 /* Let's snarf the universal address */ 553 /* "h1.h2.h3.h4.p1.p2" */ 554 udp_uaddr = taddr2uaddr(nconf, &taddr.addr); 555 } else if (strcmp(nconf->nc_netid, "local") == 0) 556 pml->pml_map.pm_prot = IPPROTO_ST; 557 else if (strcmp(nconf->nc_netid, "unix") == 0) 558 pml->pml_map.pm_prot = IPPROTO_ST; 559 pml->pml_next = list_pml; 560 list_pml = pml; 561 562 /* Add version 3 information */ 563 pml = malloc(sizeof (struct pmaplist)); 564 if (pml == NULL) { 565 syslog(LOG_ERR, "no memory!"); 566 exit(1); 567 } 568 pml->pml_map = list_pml->pml_map; 569 pml->pml_map.pm_vers = RPCBVERS; 570 pml->pml_next = list_pml; 571 list_pml = pml; 572 573 /* Add version 4 information */ 574 pml = malloc (sizeof (struct pmaplist)); 575 if (pml == NULL) { 576 syslog(LOG_ERR, "no memory!"); 577 exit(1); 578 } 579 pml->pml_map = list_pml->pml_map; 580 pml->pml_map.pm_vers = RPCBVERS4; 581 pml->pml_next = list_pml; 582 list_pml = pml; 583 584 /* Also add version 2 stuff to rpcbind list */ 585 rbllist_add(PMAPPROG, PMAPVERS, nconf, &taddr.addr); 586 } 587 #endif 588 589 /* version 3 registration */ 590 if (!svc_reg(my_xprt, RPCBPROG, RPCBVERS, rpcb_service_3, NULL)) { 591 syslog(LOG_ERR, "could not register %s version 3", 592 nconf->nc_netid); 593 goto error; 594 } 595 rbllist_add(RPCBPROG, RPCBVERS, nconf, &taddr.addr); 596 597 /* version 4 registration */ 598 if (!svc_reg(my_xprt, RPCBPROG, RPCBVERS4, rpcb_service_4, NULL)) { 599 syslog(LOG_ERR, "could not register %s version 4", 600 nconf->nc_netid); 601 goto error; 602 } 603 rbllist_add(RPCBPROG, RPCBVERS4, nconf, &taddr.addr); 604 605 /* decide if bound checking works for this transport */ 606 status = add_bndlist(nconf, &taddr.addr); 607 #ifdef BIND_DEBUG 608 if (debugging) { 609 if (status < 0) { 610 fprintf(stderr, "Error in finding bind status for %s\n", 611 nconf->nc_netid); 612 } else if (status == 0) { 613 fprintf(stderr, "check binding for %s\n", 614 nconf->nc_netid); 615 } else if (status > 0) { 616 fprintf(stderr, "No check binding for %s\n", 617 nconf->nc_netid); 618 } 619 } 620 #endif 621 /* 622 * rmtcall only supported on CLTS transports for now. 623 */ 624 if (nconf->nc_semantics == NC_TPI_CLTS) { 625 status = create_rmtcall_fd(nconf); 626 627 #ifdef BIND_DEBUG 628 if (debugging) { 629 if (status < 0) { 630 fprintf(stderr, 631 "Could not create rmtcall fd for %s\n", 632 nconf->nc_netid); 633 } else { 634 fprintf(stderr, "rmtcall fd for %s is %d\n", 635 nconf->nc_netid, status); 636 } 637 } 638 #endif 639 } 640 return (0); 641 error: 642 close(fd); 643 return (1); 644 } 645 646 static void 647 rbllist_add(rpcprog_t prog, rpcvers_t vers, struct netconfig *nconf, 648 struct netbuf *addr) 649 { 650 rpcblist_ptr rbl; 651 652 rbl = malloc(sizeof (rpcblist)); 653 if (rbl == NULL) { 654 syslog(LOG_ERR, "no memory!"); 655 exit(1); 656 } 657 658 rbl->rpcb_map.r_prog = prog; 659 rbl->rpcb_map.r_vers = vers; 660 rbl->rpcb_map.r_netid = strdup(nconf->nc_netid); 661 rbl->rpcb_map.r_addr = taddr2uaddr(nconf, addr); 662 rbl->rpcb_map.r_owner = strdup(superuser); 663 rbl->rpcb_next = list_rbl; /* Attach to global list */ 664 list_rbl = rbl; 665 } 666 667 /* 668 * Catch the signal and die 669 */ 670 static void 671 terminate(int dummy __unused) 672 { 673 close(rpcbindlockfd); 674 #ifdef WARMSTART 675 syslog(LOG_ERR, 676 "rpcbind terminating on signal. Restart with \"rpcbind -w\""); 677 write_warmstart(); /* Dump yourself */ 678 #endif 679 exit(2); 680 } 681 682 void 683 rpcbind_abort(void) 684 { 685 #ifdef WARMSTART 686 write_warmstart(); /* Dump yourself */ 687 #endif 688 abort(); 689 } 690 691 /* get command line options */ 692 static void 693 parseargs(int argc, char *argv[]) 694 { 695 int c; 696 697 #ifdef WARMSTART 698 #define WSOP "w" 699 #else 700 #define WSOP "" 701 #endif 702 while ((c = getopt(argc, argv, "6adh:iLls" WSOP)) != -1) { 703 switch (c) { 704 case '6': 705 ipv6_only = 1; 706 break; 707 case 'a': 708 doabort = 1; /* when debugging, do an abort on */ 709 break; /* errors; for rpcbind developers */ 710 /* only! */ 711 case 'd': 712 debugging = 1; 713 break; 714 case 'h': 715 ++nhosts; 716 hosts = realloc(hosts, nhosts * sizeof(char *)); 717 if (hosts == NULL) 718 errx(1, "Out of memory"); 719 hosts[nhosts - 1] = strdup(optarg); 720 if (hosts[nhosts - 1] == NULL) 721 errx(1, "Out of memory"); 722 break; 723 case 'i': 724 insecure = 1; 725 break; 726 case 'L': 727 oldstyle_local = 1; 728 break; 729 case 'l': 730 verboselog = 1; 731 break; 732 case 's': 733 runasdaemon = 1; 734 break; 735 #ifdef WARMSTART 736 case 'w': 737 warmstart = 1; 738 break; 739 #endif 740 default: /* error */ 741 fprintf(stderr, 742 "usage: rpcbind [-6adiLls%s] [-h bindip]\n", 743 WSOP); 744 exit (1); 745 } 746 } 747 if (doabort && !debugging) { 748 fprintf(stderr, 749 "-a (abort) specified without -d (debugging) -- ignored.\n"); 750 doabort = 0; 751 } 752 #undef WSOP 753 } 754 755 void 756 reap(int dummy __unused) 757 { 758 int save_errno = errno; 759 760 while (wait3(NULL, WNOHANG, NULL) > 0) 761 ; 762 errno = save_errno; 763 } 764 765 void 766 toggle_verboselog(int dummy __unused) 767 { 768 verboselog = !verboselog; 769 } 770