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