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                 client_pid = client_request();
 346
 347                 /*
 348                  * Create a child process to enter the kernel and then
 349                  * wait for RPCs on our local domain socket.
 350                  */
 351                 if (!fork())
 352                         nlm_syscall(debug_level, grace_period, naddrs, addrs);
 353                 else
 354                         svc_run();
 355         } else {
 356                 grace_expired = 0;
 357                 alarm(grace_period);
 358
 359                 init_nsm();
 360
 361                 client_pid = client_request();
 362
 363                 svc_run();              /* Should never return */
 364         }
 365         exit(1);
 366 }
 367
 368 /*
 369  * This routine creates and binds sockets on the appropriate
 370  * addresses. It gets called one time for each transport and
 371  * registrates the service with rpcbind on that trasport.
 372  */
 373 void
 374 create_service(struct netconfig *nconf)
 375 {
 376         struct addrinfo hints, *res = NULL;
 377         struct sockaddr_in *sin;
 378         struct sockaddr_in6 *sin6;
 379         struct __rpc_sockinfo si;
 380         struct netbuf servaddr;
 381         SVCXPRT *transp = NULL;
 382         int aicode;
 383         int fd;
 384         int nhostsbak;
 385         int r;
 386         int registered = 0;
 387         u_int32_t host_addr[4];  /* IPv4 or IPv6 */
 388
 389         if ((nconf->nc_semantics != NC_TPI_CLTS) &&
 390             (nconf->nc_semantics != NC_TPI_COTS) &&
 391             (nconf->nc_semantics != NC_TPI_COTS_ORD))
 392                 return; /* not my type */
 393
 394         /*
 395          * XXX - using RPC library internal functions.
 396          */
 397         if (!__rpc_nconf2sockinfo(nconf, &si)) {
 398                 syslog(LOG_ERR, "cannot get information for %s",
 399                     nconf->nc_netid);
 400                 return;
 401         }
 402
 403         /* Get rpc.statd's address on this transport */
 404         memset(&hints, 0, sizeof hints);
 405         hints.ai_flags = AI_PASSIVE;
 406         hints.ai_family = si.si_af;
 407         hints.ai_socktype = si.si_socktype;
 408         hints.ai_protocol = si.si_proto;
 409
 410         /*
 411          * Bind to specific IPs if asked to
 412          */
 413         nhostsbak = nhosts;
 414         while (nhostsbak > 0) {
 415                 --nhostsbak;
 416
 417                 /*
 418                  * XXX - using RPC library internal functions.
 419                  */
 420                 if ((fd = __rpc_nconf2fd(nconf)) < 0) {
 421                         syslog(LOG_ERR, "cannot create socket for %s",
 422                             nconf->nc_netid);
 423                         continue;
 424                 }
 425
 426                 switch (hints.ai_family) {
 427                         case AF_INET:
 428                                 if (inet_pton(AF_INET, hosts[nhostsbak],
 429                                     host_addr) == 1) {
 430                                         hints.ai_flags &= AI_NUMERICHOST;
 431                                 } else {
 432                                         /*
 433                                          * Skip if we have an AF_INET6 address.
 434                                          */
 435                                         if (inet_pton(AF_INET6, hosts[nhostsbak],
 436                                             host_addr) == 1) {
 437                                                 close(fd);
 438                                                 continue;
 439                                         }
 440                                 }
 441                                 break;
 442                         case AF_INET6:
 443                                 if (inet_pton(AF_INET6, hosts[nhostsbak],
 444                                     host_addr) == 1) {
 445                                         hints.ai_flags &= AI_NUMERICHOST;
 446                                 } else {
 447                                         /*
 448                                          * Skip if we have an AF_INET address.
 449                                          */
 450                                         if (inet_pton(AF_INET, hosts[nhostsbak],
 451                                             host_addr) == 1) {
 452                                                 close(fd);
 453                                                 continue;
 454                                         }
 455                                 }
 456                                 break;
 457                         default:
 458                                 break;
 459                 }
 460
 461                 /*
 462                  * If no hosts were specified, just bind to INADDR_ANY
 463                  */
 464                 if (strcmp("*", hosts[nhostsbak]) == 0) {
 465                         if (svcport_str == NULL) {
 466                                 res = malloc(sizeof(struct addrinfo));
 467                                 if (res == NULL)
 468                                         out_of_mem();
 469                                 res->ai_flags = hints.ai_flags;
 470                                 res->ai_family = hints.ai_family;
 471                                 res->ai_protocol = hints.ai_protocol;
 472                                 switch (res->ai_family) {
 473                                         case AF_INET:
 474                                                 sin = malloc(sizeof(struct sockaddr_in));
 475                                                 if (sin == NULL)
 476                                                         out_of_mem();
 477                                                 sin->sin_family = AF_INET;
 478                                                 sin->sin_port = htons(0);
 479                                                 sin->sin_addr.s_addr = htonl(INADDR_ANY);
 480                                                 res->ai_addr = (struct sockaddr*) sin;
 481                                                 res->ai_addrlen = (socklen_t)
 482                                                     sizeof(res->ai_addr);
 483                                                 break;
 484                                         case AF_INET6:
 485                                                 sin6 = malloc(sizeof(struct sockaddr_in6));
 486                                                 if (sin6 == NULL)
 487                                                         out_of_mem();
 488                                                 sin6->sin6_family = AF_INET6;
 489                                                 sin6->sin6_port = htons(0);
 490                                                 sin6->sin6_addr = in6addr_any;
 491                                                 res->ai_addr = (struct sockaddr*) sin6;
 492                                                 res->ai_addrlen = (socklen_t) sizeof(res->ai_addr);
 493                                                 break;
 494                                         default:
 495                                                 break;
 496                                 }
 497                         } else {
 498                                 if ((aicode = getaddrinfo(NULL, svcport_str,
 499                                     &hints, &res)) != 0) {
 500                                         syslog(LOG_ERR,
 501                                             "cannot get local address for %s: %s",
 502                                             nconf->nc_netid,
 503                                             gai_strerror(aicode));
 504                                         continue;
 505                                 }
 506                         }
 507                 } else {
 508                         if ((aicode = getaddrinfo(hosts[nhostsbak], svcport_str,
 509                             &hints, &res)) != 0) {
 510                                 syslog(LOG_ERR,
 511                                     "cannot get local address for %s: %s",
 512                                     nconf->nc_netid, gai_strerror(aicode));
 513                                 continue;
 514                         }
 515                 }
 516
 517                 r = bindresvport_sa(fd, res->ai_addr);
 518                 if (r != 0) {
 519                         syslog(LOG_ERR, "bindresvport_sa: %m");
 520                         exit(1);
 521                 }
 522
 523                 if (nconf->nc_semantics != NC_TPI_CLTS)
 524                     listen(fd, SOMAXCONN);
 525
 526                 transp = svc_tli_create(fd, nconf, NULL,
 527                     RPC_MAXDATASIZE, RPC_MAXDATASIZE);
 528
 529                 if (transp != (SVCXPRT *) NULL) {
 530                         if (!svc_reg(transp, NLM_PROG, NLM_SM, nlm_prog_0,
 531                             NULL))
 532                                 syslog(LOG_ERR,
 533                                     "can't register %s NLM_PROG, NLM_SM service",
 534                                     nconf->nc_netid);
 535
 536                         if (!svc_reg(transp, NLM_PROG, NLM_VERS, nlm_prog_1,
 537                             NULL))
 538                                 syslog(LOG_ERR,
 539                                     "can't register %s NLM_PROG, NLM_VERS service",
 540                                     nconf->nc_netid);
 541
 542                         if (!svc_reg(transp, NLM_PROG, NLM_VERSX, nlm_prog_3,
 543                             NULL))
 544                                 syslog(LOG_ERR,
 545                                     "can't register %s NLM_PROG, NLM_VERSX service",
 546                                     nconf->nc_netid);
 547
 548                         if (!svc_reg(transp, NLM_PROG, NLM_VERS4, nlm_prog_4,
 549                             NULL))
 550                                 syslog(LOG_ERR,
 551                                     "can't register %s NLM_PROG, NLM_VERS4 service",
 552                                     nconf->nc_netid);
 553
 554                 } else
 555                         syslog(LOG_WARNING, "can't create %s services",
 556                             nconf->nc_netid);
 557
 558                 if (registered == 0) {
 559                         registered = 1;
 560                         memset(&hints, 0, sizeof hints);
 561                         hints.ai_flags = AI_PASSIVE;
 562                         hints.ai_family = si.si_af;
 563                         hints.ai_socktype = si.si_socktype;
 564                         hints.ai_protocol = si.si_proto;
 565
 566                         if (svcport_str == NULL) {
 567                                 svcport_str = malloc(NI_MAXSERV * sizeof(char));
 568                                 if (svcport_str == NULL)
 569                                         out_of_mem();
 570
 571                                 if (getnameinfo(res->ai_addr,
 572                                     res->ai_addr->sa_len, NULL, NI_MAXHOST,
 573                                     svcport_str, NI_MAXSERV * sizeof(char),
 574                                     NI_NUMERICHOST | NI_NUMERICSERV))
 575                                         errx(1, "Cannot get port number");
 576                         }
 577
 578                         if((aicode = getaddrinfo(NULL, svcport_str, &hints,
 579                             &res)) != 0) {
 580                                 syslog(LOG_ERR, "cannot get local address: %s",
 581                                     gai_strerror(aicode));
 582                                 exit(1);
 583                         }
 584
 585                         servaddr.buf = malloc(res->ai_addrlen);
 586                         memcpy(servaddr.buf, res->ai_addr, res->ai_addrlen);
 587                         servaddr.len = res->ai_addrlen;
 588
 589                         rpcb_set(NLM_PROG, NLM_SM, nconf, &servaddr);
 590                         rpcb_set(NLM_PROG, NLM_VERS, nconf, &servaddr);
 591                         rpcb_set(NLM_PROG, NLM_VERSX, nconf, &servaddr);
 592                         rpcb_set(NLM_PROG, NLM_VERS4, nconf, &servaddr);
 593
 594                         xcreated++;
 595                         freeaddrinfo(res);
 596                 }
 597         } /* end while */
 598 }
 599
 600 /*
 601  * Look up addresses for the kernel to create transports for.
 602  */
 603 void
 604 lookup_addresses(struct netconfig *nconf)
 605 {
 606         struct addrinfo hints, *res = NULL;
 607         struct sockaddr_in *sin;
 608         struct sockaddr_in6 *sin6;
 609         struct __rpc_sockinfo si;
 610         struct netbuf servaddr;
 611         SVCXPRT *transp = NULL;
 612         int aicode;
 613         int nhostsbak;
 614         int r;
 615         int registered = 0;
 616         u_int32_t host_addr[4];  /* IPv4 or IPv6 */
 617         char *uaddr;
 618
 619         if ((nconf->nc_semantics != NC_TPI_CLTS) &&
 620             (nconf->nc_semantics != NC_TPI_COTS) &&
 621             (nconf->nc_semantics != NC_TPI_COTS_ORD))
 622                 return; /* not my type */
 623
 624         /*
 625          * XXX - using RPC library internal functions.
 626          */
 627         if (!__rpc_nconf2sockinfo(nconf, &si)) {
 628                 syslog(LOG_ERR, "cannot get information for %s",
 629                     nconf->nc_netid);
 630                 return;
 631         }
 632
 633         /* Get rpc.statd's address on this transport */
 634         memset(&hints, 0, sizeof hints);
 635         hints.ai_flags = AI_PASSIVE;
 636         hints.ai_family = si.si_af;
 637         hints.ai_socktype = si.si_socktype;
 638         hints.ai_protocol = si.si_proto;
 639
 640         /*
 641          * Bind to specific IPs if asked to
 642          */
 643         nhostsbak = nhosts;
 644         while (nhostsbak > 0) {
 645                 --nhostsbak;
 646
 647                 switch (hints.ai_family) {
 648                         case AF_INET:
 649                                 if (inet_pton(AF_INET, hosts[nhostsbak],
 650                                     host_addr) == 1) {
 651                                         hints.ai_flags &= AI_NUMERICHOST;
 652                                 } else {
 653                                         /*
 654                                          * Skip if we have an AF_INET6 address.
 655                                          */
 656                                         if (inet_pton(AF_INET6, hosts[nhostsbak],
 657                                             host_addr) == 1) {
 658                                                 continue;
 659                                         }
 660                                 }
 661                                 break;
 662                         case AF_INET6:
 663                                 if (inet_pton(AF_INET6, hosts[nhostsbak],
 664                                     host_addr) == 1) {
 665                                         hints.ai_flags &= AI_NUMERICHOST;
 666                                 } else {
 667                                         /*
 668                                          * Skip if we have an AF_INET address.
 669                                          */
 670                                         if (inet_pton(AF_INET, hosts[nhostsbak],
 671                                             host_addr) == 1) {
 672                                                 continue;
 673                                         }
 674                                 }
 675                                 break;
 676                         default:
 677                                 break;
 678                 }
 679
 680                 /*
 681                  * If no hosts were specified, just bind to INADDR_ANY
 682                  */
 683                 if (strcmp("*", hosts[nhostsbak]) == 0) {
 684                         if (svcport_str == NULL) {
 685                                 res = malloc(sizeof(struct addrinfo));
 686                                 if (res == NULL)
 687                                         out_of_mem();
 688                                 res->ai_flags = hints.ai_flags;
 689                                 res->ai_family = hints.ai_family;
 690                                 res->ai_protocol = hints.ai_protocol;
 691                                 switch (res->ai_family) {
 692                                         case AF_INET:
 693                                                 sin = malloc(sizeof(struct sockaddr_in));
 694                                                 if (sin == NULL)
 695                                                         out_of_mem();
 696                                                 sin->sin_family = AF_INET;
 697                                                 sin->sin_port = htons(0);
 698                                                 sin->sin_addr.s_addr = htonl(INADDR_ANY);
 699                                                 res->ai_addr = (struct sockaddr*) sin;
 700                                                 res->ai_addrlen = (socklen_t)
 701                                                     sizeof(res->ai_addr);
 702                                                 break;
 703                                         case AF_INET6:
 704                                                 sin6 = malloc(sizeof(struct sockaddr_in6));
 705                                                 if (sin6 == NULL)
 706                                                         out_of_mem();
 707                                                 sin6->sin6_family = AF_INET6;
 708                                                 sin6->sin6_port = htons(0);
 709                                                 sin6->sin6_addr = in6addr_any;
 710                                                 res->ai_addr = (struct sockaddr*) sin6;
 711                                                 res->ai_addrlen = (socklen_t) sizeof(res->ai_addr);
 712                                                 break;
 713                                         default:
 714                                                 break;
 715                                 }
 716                         } else {
 717                                 if ((aicode = getaddrinfo(NULL, svcport_str,
 718                                     &hints, &res)) != 0) {
 719                                         syslog(LOG_ERR,
 720                                             "cannot get local address for %s: %s",
 721                                             nconf->nc_netid,
 722                                             gai_strerror(aicode));
 723                                         continue;
 724                                 }
 725                         }
 726                 } else {
 727                         if ((aicode = getaddrinfo(hosts[nhostsbak], svcport_str,
 728                             &hints, &res)) != 0) {
 729                                 syslog(LOG_ERR,
 730                                     "cannot get local address for %s: %s",
 731                                     nconf->nc_netid, gai_strerror(aicode));
 732                                 continue;
 733                         }
 734                 }
 735
 736                 servaddr.len = servaddr.maxlen = res->ai_addr->sa_len;
 737                 servaddr.buf = res->ai_addr;
 738                 uaddr = taddr2uaddr(nconf, &servaddr);
 739
 740                 addrs = realloc(addrs, 2 * (naddrs + 1) * sizeof(char *));
 741                 if (!addrs)
 742                         out_of_mem();
 743                 addrs[2 * naddrs] = strdup(nconf->nc_netid);
 744                 addrs[2 * naddrs + 1] = uaddr;
 745                 naddrs++;
 746         } /* end while */
 747 }
 748
 749 void
 750 sigalarm_handler(void)
 751 {
 752
 753         grace_expired = 1;
 754 }
 755
 756 void
 757 usage()
 758 {
 759         errx(1, "usage: rpc.lockd [-d <debuglevel>]"
 760             " [-g <grace period>] [-h <bindip>] [-p <port>]");
 761 }
 762
 763 /*
 764  * init_nsm --
 765  *      Reset the NSM state-of-the-world and acquire its state.
 766  */
 767 void
 768 init_nsm(void)
 769 {
 770         enum clnt_stat ret;
 771         my_id id;
 772         sm_stat stat;
 773         char name[] = "NFS NLM";
 774         char localhost[] = "localhost";
 775
 776         /*
 777          * !!!
 778          * The my_id structure isn't used by the SM_UNMON_ALL call, as far
 779          * as I know.  Leave it empty for now.
 780          */
 781         memset(&id, 0, sizeof(id));
 782         id.my_name = name;
 783
 784         /*
 785          * !!!
 786          * The statd program must already be registered when lockd runs.
 787          */
 788         do {
 789                 ret = callrpc("localhost", SM_PROG, SM_VERS, SM_UNMON_ALL,
 790                     (xdrproc_t)xdr_my_id, &id, (xdrproc_t)xdr_sm_stat, &stat);
 791                 if (ret == RPC_PROGUNAVAIL) {
 792                         syslog(LOG_WARNING, "%lu %s", SM_PROG,
 793                             clnt_sperrno(ret));
 794                         sleep(2);
 795                         continue;
 796                 }
 797                 break;
 798         } while (0);
 799
 800         if (ret != 0) {
 801                 syslog(LOG_ERR, "%lu %s", SM_PROG, clnt_sperrno(ret));
 802                 exit(1);
 803         }
 804
 805         nsm_state = stat.state;
 806
 807         /* setup constant data for SM_MON calls */
 808         mon_host.mon_id.my_id.my_name = localhost;
 809         mon_host.mon_id.my_id.my_prog = NLM_PROG;
 810         mon_host.mon_id.my_id.my_vers = NLM_SM;
 811         mon_host.mon_id.my_id.my_proc = NLM_SM_NOTIFY;  /* bsdi addition */
 812 }
 813
 814 /*
 815  * Out of memory, fatal
 816  */
 817 void out_of_mem()
 818 {
 819         syslog(LOG_ERR, "out of memory");
 820         exit(2);
 821 }