usr.sbin/rpc.lockd/lockd.c

   1 /*      $NetBSD: lockd.c,v 1.7 2000/08/12 18:08:44 thorpej Exp $        */
   2 /*      $FreeBSD$ */
   3
   4 /*
   5  * Copyright (c) 1995
   6  *      A.R. Gordon (andrew.gordon@net-tel.co.uk).  All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. All advertising materials mentioning features or use of this software
  17  *    must display the following acknowledgement:
  18  *      This product includes software developed for the FreeBSD project
  19  * 4. Neither the name of the author nor the names of any co-contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY ANDREW GORDON AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  *
  35  */
  36
  37 #include <sys/cdefs.h>
  38 #ifndef lint
  39 __RCSID("$NetBSD: lockd.c,v 1.7 2000/08/12 18:08:44 thorpej Exp $");
  40 #endif
  41
  42 /*
  43  * main() function for NFS lock daemon.  Most of the code in this
  44  * file was generated by running rpcgen /usr/include/rpcsvc/nlm_prot.x.
  45  *
  46  * The actual program logic is in the file lock_proc.c
  47  */
  48
  49 #include <sys/param.h>
  50 #include <sys/linker.h>
  51 #include <sys/module.h>
  52 #include <sys/socket.h>
  53 #include <sys/stat.h>
  54
  55 #include <netinet/in.h>
  56 #include <arpa/inet.h>
  57
  58 #include <err.h>
  59 #include <stdio.h>
  60 #include <stdlib.h>
  61 #include <errno.h>
  62 #include <syslog.h>
  63 #include <signal.h>
  64 #include <string.h>
  65 #include <unistd.h>
  66 #include <libutil.h>
  67 #include <netconfig.h>
  68 #include <netdb.h>
  69
  70 #include <rpc/rpc.h>
  71 #include <rpc/rpc_com.h>
  72 #include <rpcsvc/sm_inter.h>
  73
  74 #include "lockd.h"
  75 #include <rpcsvc/nlm_prot.h>
  76
  77 int             debug_level = 0;        /* 0 = no debugging syslog() calls */
  78 int             _rpcsvcdirty = 0;
  79
  80 int grace_expired;
  81 int nsm_state;
  82 int kernel_lockd;
  83 int kernel_lockd_client;
  84 pid_t client_pid;
  85 struct mon mon_host;
  86 char **hosts, *svcport_str = NULL;
  87 int nhosts = 0;
  88 int xcreated = 0;
  89 char **addrs;                   /* actually (netid, uaddr) pairs */
  90 int naddrs;                     /* count of how many (netid, uaddr) pairs */
  91
  92 void    create_service(struct netconfig *nconf);
  93 void    lookup_addresses(struct netconfig *nconf);
  94 void    init_nsm(void);
  95 void    nlm_prog_0(struct svc_req *, SVCXPRT *);
  96 void    nlm_prog_1(struct svc_req *, SVCXPRT *);
  97 void    nlm_prog_3(struct svc_req *, SVCXPRT *);
  98 void    nlm_prog_4(struct svc_req *, SVCXPRT *);
  99 void    out_of_mem(void);
 100 void    usage(void);
 101
 102 void sigalarm_handler(void);
 103
 104 /*
 105  * XXX move to some header file.
 106  */
 107 #define _PATH_RPCLOCKDSOCK      "/var/run/rpclockd.sock"
 108
 109 int
 110 main(int argc, char **argv)
 111 {
 112         int ch, i, s;
 113         void *nc_handle;
 114         char *endptr, **hosts_bak;
 115         struct sigaction sigalarm;
 116         int grace_period = 30;
 117         struct netconfig *nconf;
 118         int have_v6 = 1;
 119         int maxrec = RPC_MAXDATASIZE;
 120         in_port_t svcport = 0;
 121
 122         while ((ch = getopt(argc, argv, "d:g:h:p:")) != (-1)) {
 123                 switch (ch) {
 124                 case 'd':
 125                         debug_level = atoi(optarg);
 126                         if (!debug_level) {
 127                                 usage();
 128                                 /* NOTREACHED */
 129                         }
 130                         break;
 131                 case 'g':
 132                         grace_period = atoi(optarg);
 133                         if (!grace_period) {
 134                                 usage();
 135                                 /* NOTREACHED */
 136                         }
 137                         break;
 138                 case 'h':
 139                         ++nhosts;
 140                         hosts_bak = hosts;
 141                         hosts_bak = realloc(hosts, nhosts * sizeof(char *));
 142                         if (hosts_bak == NULL) {
 143                                 if (hosts != NULL) {
 144                                         for (i = 0; i < nhosts; i++)
 145                                                 free(hosts[i]);
 146                                         free(hosts);
 147                                         out_of_mem();
 148                                 }
 149                         }
 150                         hosts = hosts_bak;
 151                         hosts[nhosts - 1] = strdup(optarg);
 152                         if (hosts[nhosts - 1] == NULL) {
 153                                 for (i = 0; i < (nhosts - 1); i++)
 154                                         free(hosts[i]);
 155                                 free(hosts);
 156                                 out_of_mem();
 157                         }
 158                         break;
 159                 case 'p':
 160                         endptr = NULL;
 161                         svcport = (in_port_t)strtoul(optarg, &endptr, 10);
 162                         if (endptr == NULL || *endptr != '\0' ||
 163                             svcport == 0 || svcport >= IPPORT_MAX)
 164                                 usage();
 165                         svcport_str = strdup(optarg);
 166                         break;
 167                 default:
 168                 case '?':
 169                         usage();
 170                         /* NOTREACHED */
 171                 }
 172         }
 173         if (geteuid()) { /* This command allowed only to root */
 174                 fprintf(stderr, "Sorry. You are not superuser\n");
 175                 exit(1);
 176         }
 177
 178         kernel_lockd = FALSE;
 179         kernel_lockd_client = FALSE;
 180         if (modfind("nfslockd") < 0) {
 181                 if (kldload("nfslockd") < 0) {
 182                         fprintf(stderr, "Can't find or load kernel support for rpc.lockd - using non-kernel implementation\n");
 183                 } else {
 184                         kernel_lockd = TRUE;
 185                 }
 186         } else {
 187                 kernel_lockd = TRUE;
 188         }
 189         if (kernel_lockd) {
 190                 if (getosreldate() >= 800040)
 191                         kernel_lockd_client = TRUE;
 192         }
 193
 194         (void)rpcb_unset(NLM_PROG, NLM_SM, NULL);
 195         (void)rpcb_unset(NLM_PROG, NLM_VERS, NULL);
 196         (void)rpcb_unset(NLM_PROG, NLM_VERSX, NULL);
 197         (void)rpcb_unset(NLM_PROG, NLM_VERS4, NULL);
 198
 199         /*
 200          * Check if IPv6 support is present.
 201          */
 202         s = socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP);
 203         if (s < 0)
 204                 have_v6 = 0;
 205         else
 206                 close(s);
 207
 208         rpc_control(RPC_SVC_CONNMAXREC_SET, &maxrec);
 209
 210         /*
 211          * If no hosts were specified, add a wildcard entry to bind to
 212          * INADDR_ANY. Otherwise make sure 127.0.0.1 and ::1 are added to the
 213          * list.
 214          */
 215         if (nhosts == 0) {
 216                 hosts = malloc(sizeof(char**));
 217                 if (hosts == NULL)
 218                         out_of_mem();
 219
 220                 hosts[0] = "*";
 221                 nhosts = 1;
 222         } else {
 223                 hosts_bak = hosts;
 224                 if (have_v6) {
 225                         hosts_bak = realloc(hosts, (nhosts + 2) *
 226                             sizeof(char *));
 227                         if (hosts_bak == NULL) {
 228                                 for (i = 0; i < nhosts; i++)
 229                                         free(hosts[i]);
 230                                 free(hosts);
 231                                 out_of_mem();
 232                         } else
 233                                 hosts = hosts_bak;
 234
 235                         nhosts += 2;
 236                         hosts[nhosts - 2] = "::1";
 237                 } else {
 238                         hosts_bak = realloc(hosts, (nhosts + 1) * sizeof(char *));
 239                         if (hosts_bak == NULL) {
 240                                 for (i = 0; i < nhosts; i++)
 241                                         free(hosts[i]);
 242
 243                                 free(hosts);
 244                                 out_of_mem();
 245                         } else {
 246                                 nhosts += 1;
 247                                 hosts = hosts_bak;
 248                         }
 249                 }
 250                 hosts[nhosts - 1] = "127.0.0.1";
 251         }
 252
 253         if (kernel_lockd) {
 254                 if (!kernel_lockd_client) {
 255                         /*
 256                          * For the case where we have a kernel lockd but it
 257                          * doesn't provide client locking, we run a cut-down
 258                          * RPC service on a local-domain socket. The kernel's
 259                          * RPC server will pass what it can't handle (mainly
 260                          * client replies) down to us.
 261                          */
 262                         struct sockaddr_un sun;
 263                         int fd, oldmask;
 264                         SVCXPRT *xprt;
 265
 266                         memset(&sun, 0, sizeof sun);
 267                         sun.sun_family = AF_LOCAL;
 268                         unlink(_PATH_RPCLOCKDSOCK);
 269                         strcpy(sun.sun_path, _PATH_RPCLOCKDSOCK);
 270                         sun.sun_len = SUN_LEN(&sun);
 271                         fd = socket(AF_LOCAL, SOCK_STREAM, 0);
 272                         if (!fd) {
 273                                 err(1, "Can't create local lockd socket");
 274                         }
 275                         oldmask = umask(S_IXUSR|S_IRWXG|S_IRWXO);
 276                         if (bind(fd, (struct sockaddr *) &sun, sun.sun_len) < 0) {
 277                                 err(1, "Can't bind local lockd socket");
 278                         }
 279                         umask(oldmask);
 280                         if (listen(fd, SOMAXCONN) < 0) {
 281                                 err(1, "Can't listen on local lockd socket");
 282                         }
 283                         xprt = svc_vc_create(fd, RPC_MAXDATASIZE, RPC_MAXDATASIZE);
 284                         if (!xprt) {
 285                                 err(1, "Can't create transport for local lockd socket");
 286                         }
 287                         if (!svc_reg(xprt, NLM_PROG, NLM_VERS4, nlm_prog_4, NULL)) {
 288                                 err(1, "Can't register service for local lockd socket");
 289                         }
 290                 }
 291
 292                 /*
 293                  * We need to look up the addresses so that we can
 294                  * hand uaddrs (ascii encoded address+port strings) to
 295                  * the kernel.
 296                  */
 297                 nc_handle = setnetconfig();
 298                 while ((nconf = getnetconfig(nc_handle))) {
 299                         /* We want to listen only on udp6, tcp6, udp, tcp transports */
 300                         if (nconf->nc_flag & NC_VISIBLE) {
 301                                 /* Skip if there's no IPv6 support */
 302                                 if (have_v6 == 0 && strcmp(nconf->nc_protofmly, "inet6") == 0) {
 303                                         /* DO NOTHING */
 304                                 } else {
 305                                         lookup_addresses(nconf);
 306                                 }
 307                         }
 308                 }
 309                 endnetconfig(nc_handle);
 310         } else {
 311                 nc_handle = setnetconfig();
 312                 while ((nconf = getnetconfig(nc_handle))) {
 313                         /* We want to listen only on udp6, tcp6, udp, tcp transports */
 314                         if (nconf->nc_flag & NC_VISIBLE) {
 315                                 /* Skip if there's no IPv6 support */
 316                                 if (have_v6 == 0 && strcmp(nconf->nc_protofmly, "inet6") == 0) {
 317                                         /* DO NOTHING */
 318                                 } else {
 319                                         create_service(nconf);
 320                                 }
 321                         }
 322                 }
 323                 endnetconfig(nc_handle);
 324         }
 325
 326         /*
 327          * Note that it is NOT sensible to run this program from inetd - the
 328          * protocol assumes that it will run immediately at boot time.
 329          */
 330         if (daemon(0, debug_level > 0)) {
 331                 err(1, "cannot fork");
 332                 /* NOTREACHED */
 333         }
 334
 335         openlog("rpc.lockd", 0, LOG_DAEMON);
 336         if (debug_level)
 337                 syslog(LOG_INFO, "Starting, debug level %d", debug_level);
 338         else
 339                 syslog(LOG_INFO, "Starting");
 340
 341         sigalarm.sa_handler = (sig_t) sigalarm_handler;
 342         sigemptyset(&sigalarm.sa_mask);
 343         sigalarm.sa_flags = SA_RESETHAND; /* should only happen once */
 344         sigalarm.sa_flags |= SA_RESTART;
 345         if (sigaction(SIGALRM, &sigalarm, NULL) != 0) {
 346                 syslog(LOG_WARNING, "sigaction(SIGALRM) failed: %s",
 347                     strerror(errno));
 348                 exit(1);
 349         }
 350
 351         if (kernel_lockd) {
 352                 if (!kernel_lockd_client) {
 353                         init_nsm();
 354                         client_pid = client_request();
 355
 356                         /*
 357                          * Create a child process to enter the kernel and then
 358                          * wait for RPCs on our local domain socket.
 359                          */
 360                         if (!fork())
 361                                 nlm_syscall(debug_level, grace_period,
 362                                     naddrs, addrs);
 363                         else
 364                                 svc_run();
 365                 } else {
 366                         /*
 367                          * The kernel lockd implementation provides
 368                          * both client and server so we don't need to
 369                          * do anything else.
 370                          */
 371                         nlm_syscall(debug_level, grace_period, naddrs, addrs);
 372                 }
 373         } else {
 374                 grace_expired = 0;
 375                 alarm(grace_period);
 376
 377                 init_nsm();
 378
 379                 client_pid = client_request();
 380
 381                 svc_run();              /* Should never return */
 382         }
 383         exit(1);
 384 }
 385
 386 /*
 387  * This routine creates and binds sockets on the appropriate
 388  * addresses. It gets called one time for each transport and
 389  * registrates the service with rpcbind on that trasport.
 390  */
 391 void
 392 create_service(struct netconfig *nconf)
 393 {
 394         struct addrinfo hints, *res = NULL;
 395         struct sockaddr_in *sin;
 396         struct sockaddr_in6 *sin6;
 397         struct __rpc_sockinfo si;
 398         struct netbuf servaddr;
 399         SVCXPRT *transp = NULL;
 400         int aicode;
 401         int fd;
 402         int nhostsbak;
 403         int r;
 404         int registered = 0;
 405         u_int32_t host_addr[4];  /* IPv4 or IPv6 */
 406
 407         if ((nconf->nc_semantics != NC_TPI_CLTS) &&
 408             (nconf->nc_semantics != NC_TPI_COTS) &&
 409             (nconf->nc_semantics != NC_TPI_COTS_ORD))
 410                 return; /* not my type */
 411
 412         /*
 413          * XXX - using RPC library internal functions.
 414          */
 415         if (!__rpc_nconf2sockinfo(nconf, &si)) {
 416                 syslog(LOG_ERR, "cannot get information for %s",
 417                     nconf->nc_netid);
 418                 return;
 419         }
 420
 421         /* Get rpc.statd's address on this transport */
 422         memset(&hints, 0, sizeof hints);
 423         hints.ai_flags = AI_PASSIVE;
 424         hints.ai_family = si.si_af;
 425         hints.ai_socktype = si.si_socktype;
 426         hints.ai_protocol = si.si_proto;
 427
 428         /*
 429          * Bind to specific IPs if asked to
 430          */
 431         nhostsbak = nhosts;
 432         while (nhostsbak > 0) {
 433                 --nhostsbak;
 434
 435                 /*
 436                  * XXX - using RPC library internal functions.
 437                  */
 438                 if ((fd = __rpc_nconf2fd(nconf)) < 0) {
 439                         syslog(LOG_ERR, "cannot create socket for %s",
 440                             nconf->nc_netid);
 441                         continue;
 442                 }
 443
 444                 switch (hints.ai_family) {
 445                         case AF_INET:
 446                                 if (inet_pton(AF_INET, hosts[nhostsbak],
 447                                     host_addr) == 1) {
 448                                         hints.ai_flags &= AI_NUMERICHOST;
 449                                 } else {
 450                                         /*
 451                                          * Skip if we have an AF_INET6 address.
 452                                          */
 453                                         if (inet_pton(AF_INET6, hosts[nhostsbak],
 454                                             host_addr) == 1) {
 455                                                 close(fd);
 456                                                 continue;
 457                                         }
 458                                 }
 459                                 break;
 460                         case AF_INET6:
 461                                 if (inet_pton(AF_INET6, hosts[nhostsbak],
 462                                     host_addr) == 1) {
 463                                         hints.ai_flags &= AI_NUMERICHOST;
 464                                 } else {
 465                                         /*
 466                                          * Skip if we have an AF_INET address.
 467                                          */
 468                                         if (inet_pton(AF_INET, hosts[nhostsbak],
 469                                             host_addr) == 1) {
 470                                                 close(fd);
 471                                                 continue;
 472                                         }
 473                                 }
 474                                 break;
 475                         default:
 476                                 break;
 477                 }
 478
 479                 /*
 480                  * If no hosts were specified, just bind to INADDR_ANY
 481                  */
 482                 if (strcmp("*", hosts[nhostsbak]) == 0) {
 483                         if (svcport_str == NULL) {
 484                                 res = malloc(sizeof(struct addrinfo));
 485                                 if (res == NULL)
 486                                         out_of_mem();
 487                                 res->ai_flags = hints.ai_flags;
 488                                 res->ai_family = hints.ai_family;
 489                                 res->ai_protocol = hints.ai_protocol;
 490                                 switch (res->ai_family) {
 491                                         case AF_INET:
 492                                                 sin = malloc(sizeof(struct sockaddr_in));
 493                                                 if (sin == NULL)
 494                                                         out_of_mem();
 495                                                 sin->sin_family = AF_INET;
 496                                                 sin->sin_port = htons(0);
 497                                                 sin->sin_addr.s_addr = htonl(INADDR_ANY);
 498                                                 res->ai_addr = (struct sockaddr*) sin;
 499                                                 res->ai_addrlen = (socklen_t)
 500                                                     sizeof(res->ai_addr);
 501                                                 break;
 502                                         case AF_INET6:
 503                                                 sin6 = malloc(sizeof(struct sockaddr_in6));
 504                                                 if (sin6 == NULL)
 505                                                         out_of_mem();
 506                                                 sin6->sin6_family = AF_INET6;
 507                                                 sin6->sin6_port = htons(0);
 508                                                 sin6->sin6_addr = in6addr_any;
 509                                                 res->ai_addr = (struct sockaddr*) sin6;
 510                                                 res->ai_addrlen = (socklen_t) sizeof(res->ai_addr);
 511                                                 break;
 512                                         default:
 513                                                 break;
 514                                 }
 515                         } else {
 516                                 if ((aicode = getaddrinfo(NULL, svcport_str,
 517                                     &hints, &res)) != 0) {
 518                                         syslog(LOG_ERR,
 519                                             "cannot get local address for %s: %s",
 520                                             nconf->nc_netid,
 521                                             gai_strerror(aicode));
 522                                         continue;
 523                                 }
 524                         }
 525                 } else {
 526                         if ((aicode = getaddrinfo(hosts[nhostsbak], svcport_str,
 527                             &hints, &res)) != 0) {
 528                                 syslog(LOG_ERR,
 529                                     "cannot get local address for %s: %s",
 530                                     nconf->nc_netid, gai_strerror(aicode));
 531                                 continue;
 532                         }
 533                 }
 534
 535                 r = bindresvport_sa(fd, res->ai_addr);
 536                 if (r != 0) {
 537                         syslog(LOG_ERR, "bindresvport_sa: %m");
 538                         exit(1);
 539                 }
 540
 541                 if (nconf->nc_semantics != NC_TPI_CLTS)
 542                     listen(fd, SOMAXCONN);
 543
 544                 transp = svc_tli_create(fd, nconf, NULL,
 545                     RPC_MAXDATASIZE, RPC_MAXDATASIZE);
 546
 547                 if (transp != (SVCXPRT *) NULL) {
 548                         if (!svc_reg(transp, NLM_PROG, NLM_SM, nlm_prog_0,
 549                             NULL))
 550                                 syslog(LOG_ERR,
 551                                     "can't register %s NLM_PROG, NLM_SM service",
 552                                     nconf->nc_netid);
 553
 554                         if (!svc_reg(transp, NLM_PROG, NLM_VERS, nlm_prog_1,
 555                             NULL))
 556                                 syslog(LOG_ERR,
 557                                     "can't register %s NLM_PROG, NLM_VERS service",
 558                                     nconf->nc_netid);
 559
 560                         if (!svc_reg(transp, NLM_PROG, NLM_VERSX, nlm_prog_3,
 561                             NULL))
 562                                 syslog(LOG_ERR,
 563                                     "can't register %s NLM_PROG, NLM_VERSX service",
 564                                     nconf->nc_netid);
 565
 566                         if (!svc_reg(transp, NLM_PROG, NLM_VERS4, nlm_prog_4,
 567                             NULL))
 568                                 syslog(LOG_ERR,
 569                                     "can't register %s NLM_PROG, NLM_VERS4 service",
 570                                     nconf->nc_netid);
 571
 572                 } else
 573                         syslog(LOG_WARNING, "can't create %s services",
 574                             nconf->nc_netid);
 575
 576                 if (registered == 0) {
 577                         registered = 1;
 578                         memset(&hints, 0, sizeof hints);
 579                         hints.ai_flags = AI_PASSIVE;
 580                         hints.ai_family = si.si_af;
 581                         hints.ai_socktype = si.si_socktype;
 582                         hints.ai_protocol = si.si_proto;
 583
 584                         if (svcport_str == NULL) {
 585                                 svcport_str = malloc(NI_MAXSERV * sizeof(char));
 586                                 if (svcport_str == NULL)
 587                                         out_of_mem();
 588
 589                                 if (getnameinfo(res->ai_addr,
 590                                     res->ai_addr->sa_len, NULL, NI_MAXHOST,
 591                                     svcport_str, NI_MAXSERV * sizeof(char),
 592                                     NI_NUMERICHOST | NI_NUMERICSERV))
 593                                         errx(1, "Cannot get port number");
 594                         }
 595
 596                         if((aicode = getaddrinfo(NULL, svcport_str, &hints,
 597                             &res)) != 0) {
 598                                 syslog(LOG_ERR, "cannot get local address: %s",
 599                                     gai_strerror(aicode));
 600                                 exit(1);
 601                         }
 602
 603                         servaddr.buf = malloc(res->ai_addrlen);
 604                         memcpy(servaddr.buf, res->ai_addr, res->ai_addrlen);
 605                         servaddr.len = res->ai_addrlen;
 606
 607                         rpcb_set(NLM_PROG, NLM_SM, nconf, &servaddr);
 608                         rpcb_set(NLM_PROG, NLM_VERS, nconf, &servaddr);
 609                         rpcb_set(NLM_PROG, NLM_VERSX, nconf, &servaddr);
 610                         rpcb_set(NLM_PROG, NLM_VERS4, nconf, &servaddr);
 611
 612                         xcreated++;
 613                         freeaddrinfo(res);
 614                 }
 615         } /* end while */
 616 }
 617
 618 /*
 619  * Look up addresses for the kernel to create transports for.
 620  */
 621 void
 622 lookup_addresses(struct netconfig *nconf)
 623 {
 624         struct addrinfo hints, *res = NULL;
 625         struct sockaddr_in *sin;
 626         struct sockaddr_in6 *sin6;
 627         struct __rpc_sockinfo si;
 628         struct netbuf servaddr;
 629         SVCXPRT *transp = NULL;
 630         int aicode;
 631         int nhostsbak;
 632         int r;
 633         int registered = 0;
 634         u_int32_t host_addr[4];  /* IPv4 or IPv6 */
 635         char *uaddr;
 636
 637         if ((nconf->nc_semantics != NC_TPI_CLTS) &&
 638             (nconf->nc_semantics != NC_TPI_COTS) &&
 639             (nconf->nc_semantics != NC_TPI_COTS_ORD))
 640                 return; /* not my type */
 641
 642         /*
 643          * XXX - using RPC library internal functions.
 644          */
 645         if (!__rpc_nconf2sockinfo(nconf, &si)) {
 646                 syslog(LOG_ERR, "cannot get information for %s",
 647                     nconf->nc_netid);
 648                 return;
 649         }
 650
 651         /* Get rpc.statd's address on this transport */
 652         memset(&hints, 0, sizeof hints);
 653         hints.ai_flags = AI_PASSIVE;
 654         hints.ai_family = si.si_af;
 655         hints.ai_socktype = si.si_socktype;
 656         hints.ai_protocol = si.si_proto;
 657
 658         /*
 659          * Bind to specific IPs if asked to
 660          */
 661         nhostsbak = nhosts;
 662         while (nhostsbak > 0) {
 663                 --nhostsbak;
 664
 665                 switch (hints.ai_family) {
 666                         case AF_INET:
 667                                 if (inet_pton(AF_INET, hosts[nhostsbak],
 668                                     host_addr) == 1) {
 669                                         hints.ai_flags &= AI_NUMERICHOST;
 670                                 } else {
 671                                         /*
 672                                          * Skip if we have an AF_INET6 address.
 673                                          */
 674                                         if (inet_pton(AF_INET6, hosts[nhostsbak],
 675                                             host_addr) == 1) {
 676                                                 continue;
 677                                         }
 678                                 }
 679                                 break;
 680                         case AF_INET6:
 681                                 if (inet_pton(AF_INET6, hosts[nhostsbak],
 682                                     host_addr) == 1) {
 683                                         hints.ai_flags &= AI_NUMERICHOST;
 684                                 } else {
 685                                         /*
 686                                          * Skip if we have an AF_INET address.
 687                                          */
 688                                         if (inet_pton(AF_INET, hosts[nhostsbak],
 689                                             host_addr) == 1) {
 690                                                 continue;
 691                                         }
 692                                 }
 693                                 break;
 694                         default:
 695                                 break;
 696                 }
 697
 698                 /*
 699                  * If no hosts were specified, just bind to INADDR_ANY
 700                  */
 701                 if (strcmp("*", hosts[nhostsbak]) == 0) {
 702                         if (svcport_str == NULL) {
 703                                 res = malloc(sizeof(struct addrinfo));
 704                                 if (res == NULL)
 705                                         out_of_mem();
 706                                 res->ai_flags = hints.ai_flags;
 707                                 res->ai_family = hints.ai_family;
 708                                 res->ai_protocol = hints.ai_protocol;
 709                                 switch (res->ai_family) {
 710                                         case AF_INET:
 711                                                 sin = malloc(sizeof(struct sockaddr_in));
 712                                                 if (sin == NULL)
 713                                                         out_of_mem();
 714                                                 sin->sin_family = AF_INET;
 715                                                 sin->sin_port = htons(0);
 716                                                 sin->sin_addr.s_addr = htonl(INADDR_ANY);
 717                                                 res->ai_addr = (struct sockaddr*) sin;
 718                                                 res->ai_addrlen = (socklen_t)
 719                                                     sizeof(res->ai_addr);
 720                                                 break;
 721                                         case AF_INET6:
 722                                                 sin6 = malloc(sizeof(struct sockaddr_in6));
 723                                                 if (sin6 == NULL)
 724                                                         out_of_mem();
 725                                                 sin6->sin6_family = AF_INET6;
 726                                                 sin6->sin6_port = htons(0);
 727                                                 sin6->sin6_addr = in6addr_any;
 728                                                 res->ai_addr = (struct sockaddr*) sin6;
 729                                                 res->ai_addrlen = (socklen_t) sizeof(res->ai_addr);
 730                                                 break;
 731                                         default:
 732                                                 break;
 733                                 }
 734                         } else {
 735                                 if ((aicode = getaddrinfo(NULL, svcport_str,
 736                                     &hints, &res)) != 0) {
 737                                         syslog(LOG_ERR,
 738                                             "cannot get local address for %s: %s",
 739                                             nconf->nc_netid,
 740                                             gai_strerror(aicode));
 741                                         continue;
 742                                 }
 743                         }
 744                 } else {
 745                         if ((aicode = getaddrinfo(hosts[nhostsbak], svcport_str,
 746                             &hints, &res)) != 0) {
 747                                 syslog(LOG_ERR,
 748                                     "cannot get local address for %s: %s",
 749                                     nconf->nc_netid, gai_strerror(aicode));
 750                                 continue;
 751                         }
 752                 }
 753
 754                 servaddr.len = servaddr.maxlen = res->ai_addr->sa_len;
 755                 servaddr.buf = res->ai_addr;
 756                 uaddr = taddr2uaddr(nconf, &servaddr);
 757
 758                 addrs = realloc(addrs, 2 * (naddrs + 1) * sizeof(char *));
 759                 if (!addrs)
 760                         out_of_mem();
 761                 addrs[2 * naddrs] = strdup(nconf->nc_netid);
 762                 addrs[2 * naddrs + 1] = uaddr;
 763                 naddrs++;
 764         } /* end while */
 765 }
 766
 767 void
 768 sigalarm_handler(void)
 769 {
 770
 771         grace_expired = 1;
 772 }
 773
 774 void
 775 usage()
 776 {
 777         errx(1, "usage: rpc.lockd [-d <debuglevel>]"
 778             " [-g <grace period>] [-h <bindip>] [-p <port>]");
 779 }
 780
 781 /*
 782  * init_nsm --
 783  *      Reset the NSM state-of-the-world and acquire its state.
 784  */
 785 void
 786 init_nsm(void)
 787 {
 788         enum clnt_stat ret;
 789         my_id id;
 790         sm_stat stat;
 791         char name[] = "NFS NLM";
 792         char localhost[] = "localhost";
 793
 794         /*
 795          * !!!
 796          * The my_id structure isn't used by the SM_UNMON_ALL call, as far
 797          * as I know.  Leave it empty for now.
 798          */
 799         memset(&id, 0, sizeof(id));
 800         id.my_name = name;
 801
 802         /*
 803          * !!!
 804          * The statd program must already be registered when lockd runs.
 805          */
 806         do {
 807                 ret = callrpc("localhost", SM_PROG, SM_VERS, SM_UNMON_ALL,
 808                     (xdrproc_t)xdr_my_id, &id, (xdrproc_t)xdr_sm_stat, &stat);
 809                 if (ret == RPC_PROGUNAVAIL) {
 810                         syslog(LOG_WARNING, "%lu %s", SM_PROG,
 811                             clnt_sperrno(ret));
 812                         sleep(2);
 813                         continue;
 814                 }
 815                 break;
 816         } while (0);
 817
 818         if (ret != 0) {
 819                 syslog(LOG_ERR, "%lu %s", SM_PROG, clnt_sperrno(ret));
 820                 exit(1);
 821         }
 822
 823         nsm_state = stat.state;
 824
 825         /* setup constant data for SM_MON calls */
 826         mon_host.mon_id.my_id.my_name = localhost;
 827         mon_host.mon_id.my_id.my_prog = NLM_PROG;
 828         mon_host.mon_id.my_id.my_vers = NLM_SM;
 829         mon_host.mon_id.my_id.my_proc = NLM_SM_NOTIFY;  /* bsdi addition */
 830 }
 831
 832 /*
 833  * Out of memory, fatal
 834  */
 835 void out_of_mem()
 836 {
 837         syslog(LOG_ERR, "out of memory");
 838         exit(2);
 839 }