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