contrib/netbsd-tests/fs/nfs/nfsservice/nfsd.c

   1 /*      $NetBSD: nfsd.c,v 1.4 2013/10/19 17:45:00 christos Exp $        */
   2
   3 /*
   4  * Copyright (c) 1989, 1993, 1994
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley by
   8  * Rick Macklem at The University of Guelph.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. Neither the name of the University nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  */
  34
  35 #include <sys/cdefs.h>
  36 #ifndef lint
  37 __COPYRIGHT("@(#) Copyright (c) 1989, 1993, 1994\
  38  The Regents of the University of California.  All rights reserved.");
  39 #endif /* not lint */
  40
  41 #ifndef lint
  42 #if 0
  43 static char sccsid[] = "@(#)nfsd.c      8.9 (Berkeley) 3/29/95";
  44 #else
  45 __RCSID("$NetBSD: nfsd.c,v 1.4 2013/10/19 17:45:00 christos Exp $");
  46 #endif
  47 #endif /* not lint */
  48
  49 #include <sys/param.h>
  50 #include <sys/ioctl.h>
  51 #include <sys/stat.h>
  52 #include <sys/wait.h>
  53 #include <sys/uio.h>
  54 #include <sys/ucred.h>
  55 #include <sys/mount.h>
  56 #include <sys/socket.h>
  57 #include <sys/socketvar.h>
  58 #include <poll.h>
  59
  60 #include <rpc/rpc.h>
  61 #include <rpc/pmap_clnt.h>
  62 #include <rpc/pmap_prot.h>
  63
  64 #include <nfs/rpcv2.h>
  65 #include <nfs/nfsproto.h>
  66 #include <nfs/nfs.h>
  67
  68 #include <err.h>
  69 #include <errno.h>
  70 #include <fcntl.h>
  71 #include <grp.h>
  72 #include <pwd.h>
  73 #include <pthread.h>
  74 #include <signal.h>
  75 #include <stdio.h>
  76 #include <stdlib.h>
  77 #include <string.h>
  78 #include <syslog.h>
  79 #include <unistd.h>
  80 #include <netdb.h>
  81
  82 #include <rump/rump.h>
  83 #include <rump/rump_syscalls.h>
  84
  85 /* Global defs */
  86 #ifdef DEBUG
  87 #define syslog(e, s, args...)                                           \
  88 do {                                                                    \
  89     fprintf(stderr,(s), ## args);                                       \
  90     fprintf(stderr, "\n");                                              \
  91 } while (/*CONSTCOND*/0)
  92 int     debug = 1;
  93 #else
  94 int     debug = 0;
  95 #endif
  96
  97 int     main __P((int, char **));
  98 void    nonfs __P((int));
  99 void    usage __P((void));
 100
 101 static void *
 102 child(void *arg)
 103 {
 104         struct  nfsd_srvargs nsd;
 105         int nfssvc_flag;
 106
 107         nfssvc_flag = NFSSVC_NFSD;
 108         memset(&nsd, 0, sizeof(nsd));
 109         while (rump_sys_nfssvc(nfssvc_flag, &nsd) < 0) {
 110                 if (errno != ENEEDAUTH) {
 111                         syslog(LOG_ERR, "nfssvc: %m %d", errno);
 112                         exit(1);
 113                 }
 114                 nfssvc_flag = NFSSVC_NFSD | NFSSVC_AUTHINFAIL;
 115         }
 116
 117         return NULL;
 118 }
 119
 120 /*
 121  * Nfs server daemon mostly just a user context for nfssvc()
 122  *
 123  * 1 - do file descriptor and signal cleanup
 124  * 2 - create the nfsd thread(s)
 125  * 3 - create server socket(s)
 126  * 4 - register socket with portmap
 127  *
 128  * For connectionless protocols, just pass the socket into the kernel via
 129  * nfssvc().
 130  * For connection based sockets, loop doing accepts. When you get a new
 131  * socket from accept, pass the msgsock into the kernel via nfssvc().
 132  * The arguments are:
 133  *      -c - support iso cltp clients
 134  *      -r - reregister with portmapper
 135  *      -t - support tcp nfs clients
 136  *      -u - support udp nfs clients
 137  * followed by "n" which is the number of nfsd threads to create
 138  */
 139 int nfsd_main(int, char**);
 140 int
 141 nfsd_main(argc, argv)
 142         int argc;
 143         char *argv[];
 144 {
 145         struct nfsd_args nfsdargs;
 146         struct addrinfo *ai_udp, *ai_tcp, *ai_udp6, *ai_tcp6, hints;
 147         struct netconfig *nconf_udp, *nconf_tcp, *nconf_udp6, *nconf_tcp6;
 148         struct netbuf nb_udp, nb_tcp, nb_udp6, nb_tcp6;
 149         struct sockaddr_in inetpeer;
 150         struct pollfd set[4];
 151         socklen_t len;
 152         int ch, connect_type_cnt, i, msgsock;
 153         int nfsdcnt, on = 1, reregister, sock, tcpflag, tcpsock;
 154         int tcp6sock, ip6flag;
 155         int tp4cnt, tp4flag, tpipcnt, udpflag, ecode, s;
 156         int error = 0;
 157
 158 #define DEFNFSDCNT       4
 159         nfsdcnt = DEFNFSDCNT;
 160         reregister = tcpflag = tp4cnt = tp4flag = tpipcnt = 0;
 161         udpflag = ip6flag = 0;
 162         nconf_udp = nconf_tcp = nconf_udp6 = nconf_tcp6 = NULL;
 163         tcpsock = tcp6sock = -1;
 164 #define GETOPT  "6n:rtu"
 165 #define USAGE   "[-rtu] [-n num_servers]"
 166         while ((ch = getopt(argc, argv, GETOPT)) != -1) {
 167                 switch (ch) {
 168                 case '6':
 169                         ip6flag = 1;
 170                         s = socket(PF_INET6, SOCK_DGRAM, IPPROTO_UDP);
 171                         if (s < 0 && (errno == EPROTONOSUPPORT ||
 172                             errno == EPFNOSUPPORT || errno == EAFNOSUPPORT))
 173                                 ip6flag = 0;
 174                         else
 175                                 close(s);
 176                         break;
 177                 case 'n':
 178                         nfsdcnt = atoi(optarg);
 179                         if (nfsdcnt < 1) {
 180                                 warnx("nfsd count %d; reset to %d", nfsdcnt, DEFNFSDCNT);
 181                                 nfsdcnt = DEFNFSDCNT;
 182                         }
 183                         break;
 184                 case 'r':
 185                         reregister = 1;
 186                         break;
 187                 case 't':
 188                         tcpflag = 1;
 189                         break;
 190                 case 'u':
 191                         udpflag = 1;
 192                         break;
 193                 default:
 194                 case '?':
 195                         usage();
 196                 };
 197         }
 198         argv += optind;
 199         argc -= optind;
 200
 201         /*
 202          * XXX
 203          * Backward compatibility, trailing number is the count of daemons.
 204          */
 205         if (argc > 1)
 206                 usage();
 207         if (argc == 1) {
 208                 nfsdcnt = atoi(argv[0]);
 209                 if (nfsdcnt < 1) {
 210                         warnx("nfsd count %d; reset to %d", nfsdcnt, DEFNFSDCNT);
 211                         nfsdcnt = DEFNFSDCNT;
 212                 }
 213         }
 214
 215         /*
 216          * If none of TCP or UDP are specified, default to UDP only.
 217          */
 218         if (tcpflag == 0 && udpflag == 0)
 219                 udpflag = 1;
 220
 221         if (debug == 0) {
 222                 fprintf(stderr, "non-debug not supported here\n");
 223                 exit(1);
 224
 225 #ifdef not_the_debug_man
 226                 daemon(0, 0);
 227                 (void)signal(SIGHUP, SIG_IGN);
 228                 (void)signal(SIGINT, SIG_IGN);
 229                 (void)signal(SIGQUIT, SIG_IGN);
 230                 (void)signal(SIGSYS, nonfs);
 231 #endif
 232         }
 233
 234         if (udpflag) {
 235                 memset(&hints, 0, sizeof hints);
 236                 hints.ai_flags = AI_PASSIVE;
 237                 hints.ai_family = PF_INET;
 238                 hints.ai_socktype = SOCK_DGRAM;
 239                 hints.ai_protocol = IPPROTO_UDP;
 240
 241                 ecode = getaddrinfo(NULL, "nfs", &hints, &ai_udp);
 242                 if (ecode != 0) {
 243                         syslog(LOG_ERR, "getaddrinfo udp: %s",
 244                             gai_strerror(ecode));
 245                         exit(1);
 246                 }
 247
 248                 nconf_udp = getnetconfigent("udp");
 249
 250                 if (nconf_udp == NULL)
 251                         err(1, "getnetconfigent udp failed");
 252
 253                 nb_udp.buf = ai_udp->ai_addr;
 254                 nb_udp.len = nb_udp.maxlen = ai_udp->ai_addrlen;
 255                 if (reregister)
 256                         if (!rpcb_set(RPCPROG_NFS, 2, nconf_udp, &nb_udp))
 257                                 err(1, "rpcb_set udp failed");
 258         }
 259
 260         if (tcpflag) {
 261                 memset(&hints, 0, sizeof hints);
 262                 hints.ai_flags = AI_PASSIVE;
 263                 hints.ai_family = PF_INET;
 264                 hints.ai_socktype = SOCK_STREAM;
 265                 hints.ai_protocol = IPPROTO_TCP;
 266
 267                 ecode = getaddrinfo(NULL, "nfs", &hints, &ai_tcp);
 268                 if (ecode != 0) {
 269                         syslog(LOG_ERR, "getaddrinfo tcp: %s",
 270                             gai_strerror(ecode));
 271                         exit(1);
 272                 }
 273
 274                 nconf_tcp = getnetconfigent("tcp");
 275
 276                 if (nconf_tcp == NULL)
 277                         err(1, "getnetconfigent tcp failed");
 278
 279                 nb_tcp.buf = ai_tcp->ai_addr;
 280                 nb_tcp.len = nb_tcp.maxlen = ai_tcp->ai_addrlen;
 281                 if (reregister)
 282                         if (!rpcb_set(RPCPROG_NFS, 2, nconf_tcp, &nb_tcp))
 283                                 err(1, "rpcb_set tcp failed");
 284         }
 285
 286         if (udpflag && ip6flag) {
 287                 memset(&hints, 0, sizeof hints);
 288                 hints.ai_flags = AI_PASSIVE;
 289                 hints.ai_family = PF_INET6;
 290                 hints.ai_socktype = SOCK_DGRAM;
 291                 hints.ai_protocol = IPPROTO_UDP;
 292
 293                 ecode = getaddrinfo(NULL, "nfs", &hints, &ai_udp6);
 294                 if (ecode != 0) {
 295                         syslog(LOG_ERR, "getaddrinfo udp: %s",
 296                             gai_strerror(ecode));
 297                         exit(1);
 298                 }
 299
 300                 nconf_udp6 = getnetconfigent("udp6");
 301
 302                 if (nconf_udp6 == NULL)
 303                         err(1, "getnetconfigent udp6 failed");
 304
 305                 nb_udp6.buf = ai_udp6->ai_addr;
 306                 nb_udp6.len = nb_udp6.maxlen = ai_udp6->ai_addrlen;
 307                 if (reregister)
 308                         if (!rpcb_set(RPCPROG_NFS, 2, nconf_udp6, &nb_udp6))
 309                                 err(1, "rpcb_set udp6 failed");
 310         }
 311
 312         if (tcpflag && ip6flag) {
 313                 memset(&hints, 0, sizeof hints);
 314                 hints.ai_flags = AI_PASSIVE;
 315                 hints.ai_family = PF_INET6;
 316                 hints.ai_socktype = SOCK_STREAM;
 317                 hints.ai_protocol = IPPROTO_TCP;
 318
 319                 ecode = getaddrinfo(NULL, "nfs", &hints, &ai_tcp6);
 320                 if (ecode != 0) {
 321                         syslog(LOG_ERR, "getaddrinfo tcp: %s",
 322                             gai_strerror(ecode));
 323                         exit(1);
 324                 }
 325
 326                 nconf_tcp6 = getnetconfigent("tcp6");
 327
 328                 if (nconf_tcp6 == NULL)
 329                         err(1, "getnetconfigent tcp6 failed");
 330
 331                 nb_tcp6.buf = ai_tcp6->ai_addr;
 332                 nb_tcp6.len = nb_tcp6.maxlen = ai_tcp6->ai_addrlen;
 333                 if (reregister)
 334                         if (!rpcb_set(RPCPROG_NFS, 2, nconf_tcp6, &nb_tcp6))
 335                                 err(1, "rpcb_set tcp6 failed");
 336         }
 337
 338         openlog("nfsd", LOG_PID, LOG_DAEMON);
 339
 340         for (i = 0; i < nfsdcnt; i++) {
 341                 pthread_t t;
 342                 pthread_create(&t, NULL, child, NULL);
 343         }
 344
 345         /* If we are serving udp, set up the socket. */
 346         if (udpflag) {
 347                 if ((sock = rump_sys_socket(ai_udp->ai_family, ai_udp->ai_socktype,
 348                     ai_udp->ai_protocol)) < 0) {
 349                         syslog(LOG_ERR, "can't create udp socket");
 350                         exit(1);
 351                 }
 352                 if (bind(sock, ai_udp->ai_addr, ai_udp->ai_addrlen) < 0) {
 353                         syslog(LOG_ERR, "can't bind udp addr");
 354                         exit(1);
 355                 }
 356                 if (!rpcb_set(RPCPROG_NFS, 2, nconf_udp, &nb_udp) ||
 357                     !rpcb_set(RPCPROG_NFS, 3, nconf_udp, &nb_udp)) {
 358                         syslog(LOG_ERR, "can't register with udp portmap");
 359                         exit(1);
 360                 }
 361                 nfsdargs.sock = sock;
 362                 nfsdargs.name = NULL;
 363                 nfsdargs.namelen = 0;
 364                 if (rump_sys_nfssvc(NFSSVC_ADDSOCK, &nfsdargs) < 0) {
 365                         syslog(LOG_ERR, "can't add UDP socket");
 366                         exit(1);
 367                 }
 368                 (void)rump_sys_close(sock);
 369         }
 370
 371         if (udpflag &&ip6flag) {
 372                 if ((sock = rump_sys_socket(ai_udp6->ai_family, ai_udp6->ai_socktype,
 373                     ai_udp6->ai_protocol)) < 0) {
 374                         syslog(LOG_ERR, "can't create udp socket");
 375                         exit(1);
 376                 }
 377                 if (rump_sys_setsockopt(sock, IPPROTO_IPV6, IPV6_V6ONLY,
 378                     &on, sizeof on) < 0) {
 379                         syslog(LOG_ERR, "can't set v6-only binding for udp6 "
 380                                         "socket: %m");
 381                         exit(1);
 382                 }
 383                 if (rump_sys_bind(sock, ai_udp6->ai_addr, ai_udp6->ai_addrlen) < 0) {
 384                         syslog(LOG_ERR, "can't bind udp addr");
 385                         exit(1);
 386                 }
 387                 if (!rpcb_set(RPCPROG_NFS, 2, nconf_udp6, &nb_udp6) ||
 388                     !rpcb_set(RPCPROG_NFS, 3, nconf_udp6, &nb_udp6)) {
 389                         syslog(LOG_ERR, "can't register with udp portmap");
 390                         exit(1);
 391                 }
 392                 nfsdargs.sock = sock;
 393                 nfsdargs.name = NULL;
 394                 nfsdargs.namelen = 0;
 395                 if (rump_sys_nfssvc(NFSSVC_ADDSOCK, &nfsdargs) < 0) {
 396                         syslog(LOG_ERR, "can't add UDP6 socket");
 397                         exit(1);
 398                 }
 399                 (void)rump_sys_close(sock);
 400         }
 401
 402         /* Now set up the master server socket waiting for tcp connections. */
 403         on = 1;
 404         connect_type_cnt = 0;
 405         if (tcpflag) {
 406                 if ((tcpsock = rump_sys_socket(ai_tcp->ai_family, ai_tcp->ai_socktype,
 407                     ai_tcp->ai_protocol)) < 0) {
 408                         syslog(LOG_ERR, "can't create tcp socket");
 409                         exit(1);
 410                 }
 411                 if (setsockopt(tcpsock,
 412                     SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0)
 413                         syslog(LOG_ERR, "setsockopt SO_REUSEADDR: %m");
 414                 if (bind(tcpsock, ai_tcp->ai_addr, ai_tcp->ai_addrlen) < 0) {
 415                         syslog(LOG_ERR, "can't bind tcp addr");
 416                         exit(1);
 417                 }
 418                 if (rump_sys_listen(tcpsock, 5) < 0) {
 419                         syslog(LOG_ERR, "listen failed");
 420                         exit(1);
 421                 }
 422                 if (!rpcb_set(RPCPROG_NFS, 2, nconf_tcp, &nb_tcp) ||
 423                     !rpcb_set(RPCPROG_NFS, 3, nconf_tcp, &nb_tcp)) {
 424                         syslog(LOG_ERR, "can't register tcp with rpcbind");
 425                         exit(1);
 426                 }
 427                 set[0].fd = tcpsock;
 428                 set[0].events = POLLIN;
 429                 connect_type_cnt++;
 430         } else
 431                 set[0].fd = -1;
 432
 433         if (tcpflag && ip6flag) {
 434                 if ((tcp6sock = socket(ai_tcp6->ai_family, ai_tcp6->ai_socktype,
 435                     ai_tcp6->ai_protocol)) < 0) {
 436                         syslog(LOG_ERR, "can't create tcp socket");
 437                         exit(1);
 438                 }
 439                 if (setsockopt(tcp6sock,
 440                     SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0)
 441                         syslog(LOG_ERR, "setsockopt SO_REUSEADDR: %m");
 442                 if (setsockopt(tcp6sock, IPPROTO_IPV6, IPV6_V6ONLY,
 443                     &on, sizeof on) < 0) {
 444                         syslog(LOG_ERR, "can't set v6-only binding for tcp6 "
 445                                         "socket: %m");
 446                         exit(1);
 447                 }
 448                 if (bind(tcp6sock, ai_tcp6->ai_addr, ai_tcp6->ai_addrlen) < 0) {
 449                         syslog(LOG_ERR, "can't bind tcp6 addr");
 450                         exit(1);
 451                 }
 452                 if (listen(tcp6sock, 5) < 0) {
 453                         syslog(LOG_ERR, "listen failed");
 454                         exit(1);
 455                 }
 456                 if (!rpcb_set(RPCPROG_NFS, 2, nconf_tcp6, &nb_tcp6) ||
 457                     !rpcb_set(RPCPROG_NFS, 3, nconf_tcp6, &nb_tcp6)) {
 458                         syslog(LOG_ERR, "can't register tcp6 with rpcbind");
 459                         exit(1);
 460                 }
 461                 set[1].fd = tcp6sock;
 462                 set[1].events = POLLIN;
 463                 connect_type_cnt++;
 464         } else
 465                 set[1].fd = -1;
 466
 467         set[2].fd = -1;
 468         set[3].fd = -1;
 469
 470         if (connect_type_cnt == 0) {
 471                 pause();
 472                 exit(0);
 473         }
 474
 475         /*
 476          * Loop forever accepting connections and passing the sockets
 477          * into the kernel for the mounts.
 478          */
 479         for (;;) {
 480                 if (rump_sys_poll(set, 4, INFTIM) < 1) {
 481                         syslog(LOG_ERR, "poll failed: %m");
 482                         exit(1);
 483                 }
 484
 485                         len = sizeof(inetpeer);
 486                         if ((msgsock = accept(tcpsock,
 487                             (struct sockaddr *)&inetpeer, &len)) < 0) {
 488                                 syslog(LOG_ERR, "accept failed: %d", error);
 489                                 exit(1);
 490                         }
 491                         memset(inetpeer.sin_zero, 0, sizeof(inetpeer.sin_zero));
 492                         if (setsockopt(msgsock, SOL_SOCKET,
 493                             SO_KEEPALIVE, (char *)&on, sizeof(on)) < 0)
 494                                 syslog(LOG_ERR,
 495                                     "setsockopt SO_KEEPALIVE: %m");
 496                         nfsdargs.sock = msgsock;
 497                         nfsdargs.name = (caddr_t)&inetpeer;
 498                         nfsdargs.namelen = sizeof(inetpeer);
 499                         rump_sys_nfssvc(NFSSVC_ADDSOCK, &nfsdargs);
 500                         (void)rump_sys_close(msgsock);
 501
 502 #ifdef notyet
 503                 if (set[1].revents & POLLIN) {
 504                         len = sizeof(inet6peer);
 505                         if ((msgsock = rump_sys_accept(tcp6sock,
 506                             (struct sockaddr *)&inet6peer, &len, &error)) < 0) {
 507                                 syslog(LOG_ERR, "accept failed: %m");
 508                                 exit(1);
 509                         }
 510                         if (rump_sys_setsockopt(msgsock, SOL_SOCKET,
 511                             SO_KEEPALIVE, (char *)&on, sizeof(on), &error) < 0)
 512                                 syslog(LOG_ERR,
 513                                     "setsockopt SO_KEEPALIVE: %m");
 514                         nfsdargs.sock = msgsock;
 515                         nfsdargs.name = (caddr_t)&inet6peer;
 516                         nfsdargs.namelen = sizeof(inet6peer);
 517                         rump_sys_nfssvc(NFSSVC_ADDSOCK, &nfsdargs, &error);
 518                         (void)rump_sys_close(msgsock, &error);
 519                 }
 520
 521                 if (set[2].revents & POLLIN) {
 522                         len = sizeof(isopeer);
 523                         if ((msgsock = rump_sys_accept(tp4sock,
 524                             (struct sockaddr *)&isopeer, &len, &error)) < 0) {
 525                                 syslog(LOG_ERR, "accept failed: %m");
 526                                 exit(1);
 527                         }
 528                         if (rump_sys_setsockopt(msgsock, SOL_SOCKET,
 529                             SO_KEEPALIVE, (char *)&on, sizeof(on), &error) < 0)
 530                                 syslog(LOG_ERR,
 531                                     "setsockopt SO_KEEPALIVE: %m");
 532                         nfsdargs.sock = msgsock;
 533                         nfsdargs.name = (caddr_t)&isopeer;
 534                         nfsdargs.namelen = len;
 535                         rump_sys_nfssvc(NFSSVC_ADDSOCK, &nfsdargs, &error);
 536                         (void)rump_sys_close(msgsock, &error);
 537                 }
 538
 539                 if (set[3].revents & POLLIN) {
 540                         len = sizeof(inetpeer);
 541                         if ((msgsock = rump_sys_accept(tpipsock,
 542                             (struct sockaddr *)&inetpeer, &len)) < 0) {
 543                                 syslog(LOG_ERR, "accept failed: %m");
 544                                 exit(1);
 545                         }
 546                         if (setsockopt(msgsock, SOL_SOCKET,
 547                             SO_KEEPALIVE, (char *)&on, sizeof(on)) < 0)
 548                                 syslog(LOG_ERR, "setsockopt SO_KEEPALIVE: %m");
 549                         nfsdargs.sock = msgsock;
 550                         nfsdargs.name = (caddr_t)&inetpeer;
 551                         nfsdargs.namelen = len;
 552                         rump_sys_nfssvc(NFSSVC_ADDSOCK, &nfsdargs);
 553                         (void)rump_sys_close(msgsock);
 554                 }
 555 #endif /* notyet */
 556         }
 557 }
 558
 559 void
 560 usage()
 561 {
 562         (void)fprintf(stderr, "usage: nfsd %s\n", USAGE);
 563         exit(1);
 564 }
 565
 566 void
 567 nonfs(signo)
 568         int signo;
 569 {
 570         syslog(LOG_ERR, "missing system call: NFS not available.");
 571 }