1 /* $NetBSD: rpcbind.c,v 1.3 2002/11/08 00:16:40 fvdl 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) 1984 - 1991 by Sun Microsystems, Inc. 34 */ 35 36 /* #ident "@(#)rpcbind.c 1.19 94/04/25 SMI" */ 37 38 #if 0 39 #ifndef lint 40 static char sccsid[] = "@(#)rpcbind.c 1.35 89/04/21 Copyr 1984 Sun Micro"; 41 #endif 42 #endif 43 44 /* 45 * rpcbind.c 46 * Implements the program, version to address mapping for rpc. 47 * 48 */ 49 50 #include <sys/types.h> 51 #include <sys/stat.h> 52 #include <sys/errno.h> 53 #include <sys/time.h> 54 #include <sys/resource.h> 55 #include <sys/wait.h> 56 #include <sys/signal.h> 57 #include <sys/socket.h> 58 #include <sys/un.h> 59 #include <rpc/rpc.h> 60 #include <rpc/rpc_com.h> 61 #ifdef PORTMAP 62 #include <netinet/in.h> 63 #endif 64 #include <arpa/inet.h> 65 #include <fcntl.h> 66 #include <netdb.h> 67 #include <stdio.h> 68 #include <netconfig.h> 69 #include <stdlib.h> 70 #include <unistd.h> 71 #include <syslog.h> 72 #include <err.h> 73 #include <libutil.h> 74 #include <pwd.h> 75 #include <string.h> 76 #include <errno.h> 77 #include "rpcbind.h" 78 79 /* Global variables */ 80 int debugging = 0; /* Tell me what's going on */ 81 int doabort = 0; /* When debugging, do an abort on errors */ 82 rpcblist_ptr list_rbl; /* A list of version 3/4 rpcbind services */ 83 84 /* who to suid to if -s is given */ 85 #define RUN_AS "daemon" 86 87 #define RPCBINDDLOCK "/var/run/rpcbind.lock" 88 89 int runasdaemon = 0; 90 int insecure = 0; 91 int oldstyle_local = 0; 92 int verboselog = 0; 93 94 char **hosts = NULL; 95 int nhosts = 0; 96 int on = 1; 97 int rpcbindlockfd; 98 99 #ifdef WARMSTART 100 /* Local Variable */ 101 static int warmstart = 0; /* Grab an old copy of registrations. */ 102 #endif 103 104 #ifdef PORTMAP 105 struct pmaplist *list_pml; /* A list of version 2 rpcbind services */ 106 char *udptrans; /* Name of UDP transport */ 107 char *tcptrans; /* Name of TCP transport */ 108 char *udp_uaddr; /* Universal UDP address */ 109 char *tcp_uaddr; /* Universal TCP address */ 110 #endif 111 static char servname[] = "rpcbind"; 112 static char superuser[] = "superuser"; 113 114 int main __P((int, char *[])); 115 116 static int init_transport __P((struct netconfig *)); 117 static void rbllist_add __P((rpcprog_t, rpcvers_t, struct netconfig *, 118 struct netbuf *)); 119 static void terminate __P((int)); 120 static void parseargs __P((int, char *[])); 121 122 int 123 main(int argc, char *argv[]) 124 { 125 struct netconfig *nconf; 126 void *nc_handle; /* Net config handle */ 127 struct rlimit rl; 128 int maxrec = RPC_MAXDATASIZE; 129 130 parseargs(argc, argv); 131 132 /* Check that another rpcbind isn't already running. */ 133 if ((rpcbindlockfd = (open(RPCBINDDLOCK, 134 O_RDONLY|O_CREAT, 0444))) == -1) 135 err(1, "%s", RPCBINDDLOCK); 136 137 if(flock(rpcbindlockfd, LOCK_EX|LOCK_NB) == -1 && errno == EWOULDBLOCK) 138 errx(1, "another rpcbind is already running. Aborting"); 139 140 getrlimit(RLIMIT_NOFILE, &rl); 141 if (rl.rlim_cur < 128) { 142 if (rl.rlim_max <= 128) 143 rl.rlim_cur = rl.rlim_max; 144 else 145 rl.rlim_cur = 128; 146 setrlimit(RLIMIT_NOFILE, &rl); 147 } 148 openlog("rpcbind", LOG_CONS, LOG_DAEMON); 149 if (geteuid()) { /* This command allowed only to root */ 150 fprintf(stderr, "Sorry. You are not superuser\n"); 151 exit(1); 152 } 153 nc_handle = setnetconfig(); /* open netconfig file */ 154 if (nc_handle == NULL) { 155 syslog(LOG_ERR, "could not read /etc/netconfig"); 156 exit(1); 157 } 158 #ifdef PORTMAP 159 udptrans = ""; 160 tcptrans = ""; 161 #endif 162 163 nconf = getnetconfigent("local"); 164 if (nconf == NULL) 165 nconf = getnetconfigent("unix"); 166 if (nconf == NULL) { 167 syslog(LOG_ERR, "%s: can't find local transport\n", argv[0]); 168 exit(1); 169 } 170 171 rpc_control(RPC_SVC_CONNMAXREC_SET, &maxrec); 172 173 init_transport(nconf); 174 175 while ((nconf = getnetconfig(nc_handle))) { 176 if (nconf->nc_flag & NC_VISIBLE) 177 init_transport(nconf); 178 } 179 endnetconfig(nc_handle); 180 181 /* catch the usual termination signals for graceful exit */ 182 (void) signal(SIGCHLD, reap); 183 (void) signal(SIGINT, terminate); 184 (void) signal(SIGTERM, terminate); 185 (void) signal(SIGQUIT, terminate); 186 /* ignore others that could get sent */ 187 (void) signal(SIGPIPE, SIG_IGN); 188 (void) signal(SIGHUP, SIG_IGN); 189 (void) signal(SIGUSR1, SIG_IGN); 190 (void) signal(SIGUSR2, SIG_IGN); 191 #ifdef WARMSTART 192 if (warmstart) { 193 read_warmstart(); 194 } 195 #endif 196 if (debugging) { 197 printf("rpcbind debugging enabled."); 198 if (doabort) { 199 printf(" Will abort on errors!\n"); 200 } else { 201 printf("\n"); 202 } 203 } else { 204 if (daemon(0, 0)) 205 err(1, "fork failed"); 206 } 207 208 if (runasdaemon) { 209 struct passwd *p; 210 211 if((p = getpwnam(RUN_AS)) == NULL) { 212 syslog(LOG_ERR, "cannot get uid of daemon: %m"); 213 exit(1); 214 } 215 if (setuid(p->pw_uid) == -1) { 216 syslog(LOG_ERR, "setuid to daemon failed: %m"); 217 exit(1); 218 } 219 } 220 221 network_init(); 222 223 my_svc_run(); 224 syslog(LOG_ERR, "svc_run returned unexpectedly"); 225 rpcbind_abort(); 226 /* NOTREACHED */ 227 228 return 0; 229 } 230 231 /* 232 * Adds the entry into the rpcbind database. 233 * If PORTMAP, then for UDP and TCP, it adds the entries for version 2 also 234 * Returns 0 if succeeds, else fails 235 */ 236 static int 237 init_transport(struct netconfig *nconf) 238 { 239 int fd; 240 struct t_bind taddr; 241 struct addrinfo hints, *res = NULL; 242 struct __rpc_sockinfo si; 243 SVCXPRT *my_xprt; 244 int status; /* bound checking ? */ 245 int aicode; 246 int addrlen; 247 int nhostsbak; 248 int checkbind; 249 struct sockaddr *sa; 250 u_int32_t host_addr[4]; /* IPv4 or IPv6 */ 251 struct sockaddr_un sun; 252 mode_t oldmask; 253 254 if ((nconf->nc_semantics != NC_TPI_CLTS) && 255 (nconf->nc_semantics != NC_TPI_COTS) && 256 (nconf->nc_semantics != NC_TPI_COTS_ORD)) 257 return (1); /* not my type */ 258 #ifdef ND_DEBUG 259 if (debugging) { 260 int i; 261 char **s; 262 263 (void) fprintf(stderr, "%s: %ld lookup routines :\n", 264 nconf->nc_netid, nconf->nc_nlookups); 265 for (i = 0, s = nconf->nc_lookups; i < nconf->nc_nlookups; 266 i++, s++) 267 fprintf(stderr, "[%d] - %s\n", i, *s); 268 } 269 #endif 270 271 /* 272 * XXX - using RPC library internal functions. For NC_TPI_CLTS 273 * we call this later, for each socket we like to bind. 274 */ 275 if (nconf->nc_semantics != NC_TPI_CLTS) { 276 if ((fd = __rpc_nconf2fd(nconf)) < 0) { 277 int non_fatal = 0; 278 279 if (errno == EPROTONOSUPPORT) 280 non_fatal = 1; 281 syslog(non_fatal?LOG_DEBUG:LOG_ERR, "cannot create socket for %s", 282 nconf->nc_netid); 283 return (1); 284 } 285 } 286 287 if (!__rpc_nconf2sockinfo(nconf, &si)) { 288 syslog(LOG_ERR, "cannot get information for %s", 289 nconf->nc_netid); 290 return (1); 291 } 292 293 if ((strcmp(nconf->nc_netid, "local") == 0) || 294 (strcmp(nconf->nc_netid, "unix") == 0)) { 295 memset(&sun, 0, sizeof sun); 296 sun.sun_family = AF_LOCAL; 297 unlink(_PATH_RPCBINDSOCK); 298 strcpy(sun.sun_path, _PATH_RPCBINDSOCK); 299 sun.sun_len = SUN_LEN(&sun); 300 addrlen = sizeof (struct sockaddr_un); 301 sa = (struct sockaddr *)&sun; 302 } else { 303 /* Get rpcbind's address on this transport */ 304 305 memset(&hints, 0, sizeof hints); 306 hints.ai_flags = AI_PASSIVE; 307 hints.ai_family = si.si_af; 308 hints.ai_socktype = si.si_socktype; 309 hints.ai_protocol = si.si_proto; 310 } 311 if (nconf->nc_semantics == NC_TPI_CLTS) { 312 /* 313 * If no hosts were specified, just bind to INADDR_ANY. Otherwise 314 * make sure 127.0.0.1 is added to the list. 315 */ 316 nhostsbak = nhosts; 317 nhostsbak++; 318 hosts = realloc(hosts, nhostsbak * sizeof(char *)); 319 if (nhostsbak == 1) 320 hosts[0] = "*"; 321 else { 322 if (hints.ai_family == AF_INET) { 323 hosts[nhostsbak - 1] = "127.0.0.1"; 324 } else if (hints.ai_family == AF_INET6) { 325 hosts[nhostsbak - 1] = "::1"; 326 } else 327 return 1; 328 } 329 330 /* 331 * Bind to specific IPs if asked to 332 */ 333 checkbind = 1; 334 while (nhostsbak > 0) { 335 --nhostsbak; 336 /* 337 * XXX - using RPC library internal functions. 338 */ 339 if ((fd = __rpc_nconf2fd(nconf)) < 0) { 340 syslog(LOG_ERR, "cannot create socket for %s", 341 nconf->nc_netid); 342 return (1); 343 } 344 switch (hints.ai_family) { 345 case AF_INET: 346 if (inet_pton(AF_INET, hosts[nhostsbak], 347 host_addr) == 1) { 348 hints.ai_flags &= AI_NUMERICHOST; 349 } else { 350 /* 351 * Skip if we have an AF_INET6 adress. 352 */ 353 if (inet_pton(AF_INET6, 354 hosts[nhostsbak], host_addr) == 1) 355 continue; 356 } 357 break; 358 case AF_INET6: 359 if (inet_pton(AF_INET6, hosts[nhostsbak], 360 host_addr) == 1) { 361 hints.ai_flags &= AI_NUMERICHOST; 362 } else { 363 /* 364 * Skip if we have an AF_INET adress. 365 */ 366 if (inet_pton(AF_INET, hosts[nhostsbak], 367 host_addr) == 1) 368 continue; 369 } 370 if (setsockopt(fd, IPPROTO_IPV6, 371 IPV6_V6ONLY, &on, sizeof on) < 0) { 372 syslog(LOG_ERR, 373 "can't set v6-only binding for " 374 "udp6 socket: %m"); 375 continue; 376 } 377 break; 378 default: 379 break; 380 } 381 382 /* 383 * If no hosts were specified, just bind to INADDR_ANY 384 */ 385 if (strcmp("*", hosts[nhostsbak]) == 0) 386 hosts[nhostsbak] = NULL; 387 388 if ((aicode = getaddrinfo(hosts[nhostsbak], 389 servname, &hints, &res)) != 0) { 390 syslog(LOG_ERR, 391 "cannot get local address for %s: %s", 392 nconf->nc_netid, gai_strerror(aicode)); 393 continue; 394 } 395 addrlen = res->ai_addrlen; 396 sa = (struct sockaddr *)res->ai_addr; 397 oldmask = umask(S_IXUSR|S_IXGRP|S_IXOTH); 398 if (bind(fd, sa, addrlen) != 0) { 399 syslog(LOG_ERR, "cannot bind %s on %s: %m", 400 (hosts[nhostsbak] == NULL) ? "*" : 401 hosts[nhostsbak], nconf->nc_netid); 402 if (res != NULL) 403 freeaddrinfo(res); 404 continue; 405 } else 406 checkbind++; 407 (void) umask(oldmask); 408 409 /* Copy the address */ 410 taddr.addr.len = taddr.addr.maxlen = addrlen; 411 taddr.addr.buf = malloc(addrlen); 412 if (taddr.addr.buf == NULL) { 413 syslog(LOG_ERR, 414 "cannot allocate memory for %s address", 415 nconf->nc_netid); 416 if (res != NULL) 417 freeaddrinfo(res); 418 return 1; 419 } 420 memcpy(taddr.addr.buf, sa, addrlen); 421 #ifdef ND_DEBUG 422 if (debugging) { 423 /* 424 * for debugging print out our universal 425 * address 426 */ 427 char *uaddr; 428 struct netbuf nb; 429 430 nb.buf = sa; 431 nb.len = nb.maxlen = sa->sa_len; 432 uaddr = taddr2uaddr(nconf, &nb); 433 (void) fprintf(stderr, 434 "rpcbind : my address is %s\n", uaddr); 435 (void) free(uaddr); 436 } 437 #endif 438 439 if (nconf->nc_semantics != NC_TPI_CLTS) 440 listen(fd, SOMAXCONN); 441 442 my_xprt = (SVCXPRT *)svc_tli_create(fd, nconf, &taddr, 443 RPC_MAXDATASIZE, RPC_MAXDATASIZE); 444 if (my_xprt == (SVCXPRT *)NULL) { 445 syslog(LOG_ERR, "%s: could not create service", 446 nconf->nc_netid); 447 goto error; 448 } 449 } 450 if (!checkbind) 451 return 1; 452 } else { 453 if ((strcmp(nconf->nc_netid, "local") != 0) && 454 (strcmp(nconf->nc_netid, "unix") != 0)) { 455 if ((aicode = getaddrinfo(NULL, servname, &hints, &res)) 456 != 0) { 457 syslog(LOG_ERR, 458 "cannot get local address for %s: %s", 459 nconf->nc_netid, gai_strerror(aicode)); 460 return 1; 461 } 462 addrlen = res->ai_addrlen; 463 sa = (struct sockaddr *)res->ai_addr; 464 } 465 oldmask = umask(S_IXUSR|S_IXGRP|S_IXOTH); 466 if (bind(fd, sa, addrlen) < 0) { 467 syslog(LOG_ERR, "cannot bind %s: %m", nconf->nc_netid); 468 if (res != NULL) 469 freeaddrinfo(res); 470 return 1; 471 } 472 (void) umask(oldmask); 473 474 /* Copy the address */ 475 taddr.addr.len = taddr.addr.maxlen = addrlen; 476 taddr.addr.buf = malloc(addrlen); 477 if (taddr.addr.buf == NULL) { 478 syslog(LOG_ERR, "cannot allocate memory for %s address", 479 nconf->nc_netid); 480 if (res != NULL) 481 freeaddrinfo(res); 482 return 1; 483 } 484 memcpy(taddr.addr.buf, sa, addrlen); 485 #ifdef ND_DEBUG 486 if (debugging) { 487 /* for debugging print out our universal address */ 488 char *uaddr; 489 struct netbuf nb; 490 491 nb.buf = sa; 492 nb.len = nb.maxlen = sa->sa_len; 493 uaddr = taddr2uaddr(nconf, &nb); 494 (void) fprintf(stderr, "rpcbind : my address is %s\n", 495 uaddr); 496 (void) free(uaddr); 497 } 498 #endif 499 500 if (nconf->nc_semantics != NC_TPI_CLTS) 501 listen(fd, SOMAXCONN); 502 503 my_xprt = (SVCXPRT *)svc_tli_create(fd, nconf, &taddr, RPC_MAXDATASIZE, RPC_MAXDATASIZE); 504 if (my_xprt == (SVCXPRT *)NULL) { 505 syslog(LOG_ERR, "%s: could not create service", 506 nconf->nc_netid); 507 goto error; 508 } 509 } 510 511 #ifdef PORTMAP 512 /* 513 * Register both the versions for tcp/ip, udp/ip and local. 514 */ 515 if ((strcmp(nconf->nc_protofmly, NC_INET) == 0 && 516 (strcmp(nconf->nc_proto, NC_TCP) == 0 || 517 strcmp(nconf->nc_proto, NC_UDP) == 0)) || 518 (strcmp(nconf->nc_netid, "unix") == 0) || 519 (strcmp(nconf->nc_netid, "local") == 0)) { 520 struct pmaplist *pml; 521 522 if (!svc_register(my_xprt, PMAPPROG, PMAPVERS, 523 pmap_service, 0)) { 524 syslog(LOG_ERR, "could not register on %s", 525 nconf->nc_netid); 526 goto error; 527 } 528 pml = malloc(sizeof (struct pmaplist)); 529 if (pml == NULL) { 530 syslog(LOG_ERR, "no memory!"); 531 exit(1); 532 } 533 pml->pml_map.pm_prog = PMAPPROG; 534 pml->pml_map.pm_vers = PMAPVERS; 535 pml->pml_map.pm_port = PMAPPORT; 536 if (strcmp(nconf->nc_proto, NC_TCP) == 0) { 537 if (tcptrans[0]) { 538 syslog(LOG_ERR, 539 "cannot have more than one TCP transport"); 540 goto error; 541 } 542 tcptrans = strdup(nconf->nc_netid); 543 pml->pml_map.pm_prot = IPPROTO_TCP; 544 545 /* Let's snarf the universal address */ 546 /* "h1.h2.h3.h4.p1.p2" */ 547 tcp_uaddr = taddr2uaddr(nconf, &taddr.addr); 548 } else if (strcmp(nconf->nc_proto, NC_UDP) == 0) { 549 if (udptrans[0]) { 550 syslog(LOG_ERR, 551 "cannot have more than one UDP transport"); 552 goto error; 553 } 554 udptrans = strdup(nconf->nc_netid); 555 pml->pml_map.pm_prot = IPPROTO_UDP; 556 557 /* Let's snarf the universal address */ 558 /* "h1.h2.h3.h4.p1.p2" */ 559 udp_uaddr = taddr2uaddr(nconf, &taddr.addr); 560 } else if (strcmp(nconf->nc_netid, "local") == 0) 561 pml->pml_map.pm_prot = IPPROTO_ST; 562 else if (strcmp(nconf->nc_netid, "unix") == 0) 563 pml->pml_map.pm_prot = IPPROTO_ST; 564 pml->pml_next = list_pml; 565 list_pml = pml; 566 567 /* Add version 3 information */ 568 pml = malloc(sizeof (struct pmaplist)); 569 if (pml == NULL) { 570 syslog(LOG_ERR, "no memory!"); 571 exit(1); 572 } 573 pml->pml_map = list_pml->pml_map; 574 pml->pml_map.pm_vers = RPCBVERS; 575 pml->pml_next = list_pml; 576 list_pml = pml; 577 578 /* Add version 4 information */ 579 pml = malloc (sizeof (struct pmaplist)); 580 if (pml == NULL) { 581 syslog(LOG_ERR, "no memory!"); 582 exit(1); 583 } 584 pml->pml_map = list_pml->pml_map; 585 pml->pml_map.pm_vers = RPCBVERS4; 586 pml->pml_next = list_pml; 587 list_pml = pml; 588 589 /* Also add version 2 stuff to rpcbind list */ 590 rbllist_add(PMAPPROG, PMAPVERS, nconf, &taddr.addr); 591 } 592 #endif 593 594 /* version 3 registration */ 595 if (!svc_reg(my_xprt, RPCBPROG, RPCBVERS, rpcb_service_3, NULL)) { 596 syslog(LOG_ERR, "could not register %s version 3", 597 nconf->nc_netid); 598 goto error; 599 } 600 rbllist_add(RPCBPROG, RPCBVERS, nconf, &taddr.addr); 601 602 /* version 4 registration */ 603 if (!svc_reg(my_xprt, RPCBPROG, RPCBVERS4, rpcb_service_4, NULL)) { 604 syslog(LOG_ERR, "could not register %s version 4", 605 nconf->nc_netid); 606 goto error; 607 } 608 rbllist_add(RPCBPROG, RPCBVERS4, nconf, &taddr.addr); 609 610 /* decide if bound checking works for this transport */ 611 status = add_bndlist(nconf, &taddr.addr); 612 #ifdef BIND_DEBUG 613 if (debugging) { 614 if (status < 0) { 615 fprintf(stderr, "Error in finding bind status for %s\n", 616 nconf->nc_netid); 617 } else if (status == 0) { 618 fprintf(stderr, "check binding for %s\n", 619 nconf->nc_netid); 620 } else if (status > 0) { 621 fprintf(stderr, "No check binding for %s\n", 622 nconf->nc_netid); 623 } 624 } 625 #endif 626 /* 627 * rmtcall only supported on CLTS transports for now. 628 */ 629 if (nconf->nc_semantics == NC_TPI_CLTS) { 630 status = create_rmtcall_fd(nconf); 631 632 #ifdef BIND_DEBUG 633 if (debugging) { 634 if (status < 0) { 635 fprintf(stderr, 636 "Could not create rmtcall fd for %s\n", 637 nconf->nc_netid); 638 } else { 639 fprintf(stderr, "rmtcall fd for %s is %d\n", 640 nconf->nc_netid, status); 641 } 642 } 643 #endif 644 } 645 return (0); 646 error: 647 close(fd); 648 return (1); 649 } 650 651 static void 652 rbllist_add(rpcprog_t prog, rpcvers_t vers, struct netconfig *nconf, 653 struct netbuf *addr) 654 { 655 rpcblist_ptr rbl; 656 657 rbl = malloc(sizeof (rpcblist)); 658 if (rbl == NULL) { 659 syslog(LOG_ERR, "no memory!"); 660 exit(1); 661 } 662 663 rbl->rpcb_map.r_prog = prog; 664 rbl->rpcb_map.r_vers = vers; 665 rbl->rpcb_map.r_netid = strdup(nconf->nc_netid); 666 rbl->rpcb_map.r_addr = taddr2uaddr(nconf, addr); 667 rbl->rpcb_map.r_owner = strdup(superuser); 668 rbl->rpcb_next = list_rbl; /* Attach to global list */ 669 list_rbl = rbl; 670 } 671 672 /* 673 * Catch the signal and die 674 */ 675 static void 676 terminate(int dummy __unused) 677 { 678 close(rpcbindlockfd); 679 #ifdef WARMSTART 680 syslog(LOG_ERR, 681 "rpcbind terminating on signal. Restart with \"rpcbind -w\""); 682 write_warmstart(); /* Dump yourself */ 683 #endif 684 exit(2); 685 } 686 687 void 688 rpcbind_abort() 689 { 690 #ifdef WARMSTART 691 write_warmstart(); /* Dump yourself */ 692 #endif 693 abort(); 694 } 695 696 /* get command line options */ 697 static void 698 parseargs(int argc, char *argv[]) 699 { 700 int c; 701 702 #ifdef WARMSTART 703 #define WSOP "w" 704 #else 705 #define WSOP "" 706 #endif 707 while ((c = getopt(argc, argv, "adh:iLls" WSOP)) != -1) { 708 switch (c) { 709 case 'a': 710 doabort = 1; /* when debugging, do an abort on */ 711 break; /* errors; for rpcbind developers */ 712 /* only! */ 713 case 'd': 714 debugging = 1; 715 break; 716 case 'h': 717 ++nhosts; 718 hosts = realloc(hosts, nhosts * sizeof(char *)); 719 if (hosts == NULL) 720 errx(1, "Out of memory"); 721 hosts[nhosts - 1] = strdup(optarg); 722 if (hosts[nhosts - 1] == NULL) 723 errx(1, "Out of memory"); 724 break; 725 case 'i': 726 insecure = 1; 727 break; 728 case 'L': 729 oldstyle_local = 1; 730 break; 731 case 'l': 732 verboselog = 1; 733 break; 734 case 's': 735 runasdaemon = 1; 736 break; 737 #ifdef WARMSTART 738 case 'w': 739 warmstart = 1; 740 break; 741 #endif 742 default: /* error */ 743 fprintf(stderr, 744 "usage: rpcbind [-adiLls%s] [-h bindip]\n", 745 WSOP); 746 exit (1); 747 } 748 } 749 if (doabort && !debugging) { 750 fprintf(stderr, 751 "-a (abort) specified without -d (debugging) -- ignored.\n"); 752 doabort = 0; 753 } 754 #undef WSOP 755 } 756 757 void 758 reap(int dummy __unused) 759 { 760 int save_errno = errno; 761 762 while (wait3(NULL, WNOHANG, NULL) > 0) 763 ; 764 errno = save_errno; 765 } 766 767 void 768 toggle_verboselog(int dummy __unused) 769 { 770 verboselog = !verboselog; 771 } 772