nfsd.tproj/nfsd.c

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * "Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
   7  * Reserved.  This file contains Original Code and/or Modifications of
   8  * Original Code as defined in and that are subject to the Apple Public
   9  * Source License Version 1.0 (the 'License').  You may not use this file
  10  * except in compliance with the License.  Please obtain a copy of the
  11  * License at http://www.apple.com/publicsource and read it before using
  12  * this file.
  13  *
  14  * The Original Code and all software distributed under the License are
  15  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  16  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  17  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  19  * License for the specific language governing rights and limitations
  20  * under the License."
  21  *
  22  * @APPLE_LICENSE_HEADER_END@
  23  */
  24 /*
  25  * Copyright (c) 1989, 1993, 1994
  26  *      The Regents of the University of California.  All rights reserved.
  27  *
  28  * This code is derived from software contributed to Berkeley by
  29  * Rick Macklem at The University of Guelph.
  30  *
  31  * Redistribution and use in source and binary forms, with or without
  32  * modification, are permitted provided that the following conditions
  33  * are met:
  34  * 1. Redistributions of source code must retain the above copyright
  35  *    notice, this list of conditions and the following disclaimer.
  36  * 2. Redistributions in binary form must reproduce the above copyright
  37  *    notice, this list of conditions and the following disclaimer in the
  38  *    documentation and/or other materials provided with the distribution.
  39  * 3. All advertising materials mentioning features or use of this software
  40  *    must display the following acknowledgement:
  41  *      This product includes software developed by the University of
  42  *      California, Berkeley and its contributors.
  43  * 4. Neither the name of the University nor the names of its contributors
  44  *    may be used to endorse or promote products derived from this software
  45  *    without specific prior written permission.
  46  *
  47  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  48  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  49  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  50  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  51  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  52  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  53  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  54  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  55  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  56  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  57  * SUCH DAMAGE.
  58  */
  59
  60
  61 #include <sys/param.h>
  62 #include <sys/syslog.h>
  63 #include <sys/ioctl.h>
  64 #include <sys/stat.h>
  65 #include <sys/wait.h>
  66 #include <sys/uio.h>
  67 #include <sys/ucred.h>
  68 #include <sys/mount.h>
  69 #include <sys/socket.h>
  70 #include <sys/socketvar.h>
  71
  72 #include <rpc/rpc.h>
  73 #include <rpc/pmap_clnt.h>
  74 #include <rpc/pmap_prot.h>
  75
  76 #ifdef ISO
  77 #include <netiso/iso.h>
  78 #endif
  79 #include <nfs/rpcv2.h>
  80 #include <nfs/nfsproto.h>
  81 #include <nfs/nfs.h>
  82
  83 #ifdef NFSKERB
  84 #include <kerberosIV/des.h>
  85 #include <kerberosIV/krb.h>
  86 #endif
  87
  88 #include <err.h>
  89 #include <errno.h>
  90 #include <fcntl.h>
  91 #include <grp.h>
  92 #include <pwd.h>
  93 #include <signal.h>
  94 #include <stdio.h>
  95 #include <stdlib.h>
  96 #include <strings.h>
  97 #include <unistd.h>
  98
  99 /* Global defs */
 100 #ifdef DEBUG
 101 #define syslog(e, s)    fprintf(stderr,(s))
 102 int     debug = 1;
 103 #else
 104 int     debug = 0;
 105 #endif
 106
 107 struct  nfsd_srvargs nsd;
 108 char    **Argv = NULL;          /* pointer to argument vector */
 109 char    *LastArg = NULL;        /* end of argv */
 110
 111 #ifdef NFSKERB
 112 char            lnam[ANAME_SZ];
 113 KTEXT_ST        kt;
 114 AUTH_DAT        kauth;
 115 char            inst[INST_SZ];
 116 struct nfsrpc_fullblock kin, kout;
 117 struct nfsrpc_fullverf kverf;
 118 NFSKERBKEY_T    kivec;
 119 struct timeval  ktv;
 120 NFSKERBKEYSCHED_T kerb_keysched;
 121 #endif
 122
 123 void    nonfs __P((int));
 124 void    reapchild __P((int));
 125 void    setproctitle __P((char *));
 126 void    usage __P((void));
 127
 128 /*
 129  * Nfs server daemon mostly just a user context for nfssvc()
 130  *
 131  * 1 - do file descriptor and signal cleanup
 132  * 2 - fork the nfsd(s)
 133  * 3 - create server socket(s)
 134  * 4 - register socket with portmap
 135  *
 136  * For connectionless protocols, just pass the socket into the kernel via.
 137  * nfssvc().
 138  * For connection based sockets, loop doing accepts. When you get a new
 139  * socket from accept, pass the msgsock into the kernel via. nfssvc().
 140  * The arguments are:
 141  *      -c - support iso cltp clients
 142  *      -r - reregister with portmapper
 143  *      -t - support tcp nfs clients
 144  *      -u - support udp nfs clients
 145  * followed by "n" which is the number of nfsds' to fork off
 146  */
 147 int
 148 main(argc, argv, envp)
 149         int argc;
 150         char *argv[], *envp[];
 151 {
 152         extern int optind;
 153         struct group *grp;
 154         struct nfsd_args nfsdargs;
 155         struct passwd *pwd;
 156         struct ucred *cr;
 157         struct sockaddr_in inetaddr, inetpeer;
 158 #ifdef ISO
 159         struct sockaddr_iso isoaddr, isopeer;
 160 #endif
 161         struct timeval ktv;
 162         fd_set ready, sockbits;
 163         int ch, cltpflag, connect_type_cnt, i, len, maxsock, msgsock;
 164         int nfsdcnt, nfssvc_flag, on, reregister, sock, tcpflag, tcpsock;
 165         int tp4cnt, tp4flag, tp4sock, tpipcnt, tpipflag, tpipsock, udpflag;
 166         char *cp, **cpp;
 167
 168         /* Save start and extent of argv for setproctitle. */
 169         Argv = argv;
 170         if (envp == 0 || *envp == 0)
 171                 envp = argv;
 172         while (*envp)
 173                 envp++;
 174         LastArg = envp[-1] + strlen(envp[-1]);
 175
 176 #define MAXNFSDCNT      64
 177 #define DEFNFSDCNT       4
 178         nfsdcnt = DEFNFSDCNT;
 179         cltpflag = reregister = tcpflag = tp4cnt = tp4flag = tpipcnt = 0;
 180         tpipflag = udpflag = 0;
 181 #ifdef ISO
 182 #define GETOPT  "cn:rtu"
 183 #define USAGE   "[-crtu] [-n num_servers]"
 184 #else
 185 #define GETOPT  "n:rtu"
 186 #define USAGE   "[-rtu] [-n num_servers]"
 187 #endif
 188         while ((ch = getopt(argc, argv, GETOPT)) != EOF)
 189                 switch (ch) {
 190                 case 'n':
 191                         nfsdcnt = atoi(optarg);
 192                         if (nfsdcnt < 1 || nfsdcnt > MAXNFSDCNT) {
 193                                 warnx("nfsd count %d; reset to %d", nfsdcnt, DEFNFSDCNT);
 194                                 nfsdcnt = DEFNFSDCNT;
 195                         }
 196                         break;
 197                 case 'r':
 198                         reregister = 1;
 199                         break;
 200                 case 't':
 201                         tcpflag = 1;
 202                         break;
 203                 case 'u':
 204                         udpflag = 1;
 205                         break;
 206 #ifdef ISO
 207                 case 'c':
 208                         cltpflag = 1;
 209                         break;
 210 #ifdef notyet
 211                 case 'i':
 212                         tp4cnt = 1;
 213                         break;
 214                 case 'p':
 215                         tpipcnt = 1;
 216                         break;
 217 #endif /* notyet */
 218 #endif /* ISO */
 219                 default:
 220                 case '?':
 221                         usage();
 222                 };
 223         argv += optind;
 224         argc -= optind;
 225
 226         /*
 227          * XXX
 228          * Backward compatibility, trailing number is the count of daemons.
 229          */
 230         if (argc > 1)
 231                 usage();
 232         if (argc == 1) {
 233                 nfsdcnt = atoi(argv[0]);
 234                 if (nfsdcnt < 1 || nfsdcnt > MAXNFSDCNT) {
 235                         warnx("nfsd count %d; reset to %d", nfsdcnt, DEFNFSDCNT);
 236                         nfsdcnt = DEFNFSDCNT;
 237                 }
 238         }
 239
 240         if (debug == 0) {
 241                 daemon(0, 0);
 242                 (void)signal(SIGHUP, SIG_IGN);
 243                 (void)signal(SIGINT, SIG_IGN);
 244                 (void)signal(SIGQUIT, SIG_IGN);
 245                 (void)signal(SIGSYS, nonfs);
 246                 (void)signal(SIGTERM, SIG_IGN);
 247         }
 248         (void)signal(SIGCHLD, reapchild);
 249
 250         if (reregister) {
 251                 if (udpflag &&
 252                     (!pmap_set(RPCPROG_NFS, 2, IPPROTO_UDP, NFS_PORT) ||
 253                      !pmap_set(RPCPROG_NFS, 3, IPPROTO_UDP, NFS_PORT)))
 254                         err(1, "can't register with portmap for UDP.");
 255                 if (tcpflag &&
 256                     (!pmap_set(RPCPROG_NFS, 2, IPPROTO_TCP, NFS_PORT) ||
 257                      !pmap_set(RPCPROG_NFS, 3, IPPROTO_TCP, NFS_PORT)))
 258                         err(1, "can't register with portmap for TCP.");
 259                 exit(0);
 260         }
 261         openlog("nfsd:", LOG_PID, LOG_DAEMON);
 262
 263         for (i = 0; i < nfsdcnt; i++) {
 264                 switch (fork()) {
 265                 case -1:
 266                         syslog(LOG_ERR, "fork: %m");
 267                         exit (1);
 268                 case 0:
 269                         break;
 270                 default:
 271                         continue;
 272                 }
 273
 274                 setproctitle("server");
 275                 nfssvc_flag = NFSSVC_NFSD;
 276                 nsd.nsd_nfsd = NULL;
 277 #ifdef NFSKERB
 278                 if (sizeof (struct nfsrpc_fullverf) != RPCX_FULLVERF ||
 279                     sizeof (struct nfsrpc_fullblock) != RPCX_FULLBLOCK)
 280                     syslog(LOG_ERR, "Yikes NFSKERB structs not packed!");
 281                 nsd.nsd_authstr = (u_char *)&kt;
 282                 nsd.nsd_authlen = sizeof (kt);
 283                 nsd.nsd_verfstr = (u_char *)&kverf;
 284                 nsd.nsd_verflen = sizeof (kverf);
 285 #endif
 286                 while (nfssvc(nfssvc_flag, &nsd) < 0) {
 287                         if (errno != ENEEDAUTH) {
 288                                 syslog(LOG_ERR, "nfssvc: %m");
 289                                 exit(1);
 290                         }
 291                         nfssvc_flag = NFSSVC_NFSD | NFSSVC_AUTHINFAIL;
 292 #ifdef NFSKERB
 293                         /*
 294                          * Get the Kerberos ticket out of the authenticator
 295                          * verify it and convert the principal name to a user
 296                          * name. The user name is then converted to a set of
 297                          * user credentials via the password and group file.
 298                          * Finally, decrypt the timestamp and validate it.
 299                          * For more info see the IETF Draft "Authentication
 300                          * in ONC RPC".
 301                          */
 302                         kt.length = ntohl(kt.length);
 303                         if (gettimeofday(&ktv, (struct timezone *)0) == 0 &&
 304                             kt.length > 0 && kt.length <=
 305                             (RPCAUTH_MAXSIZ - 3 * NFSX_UNSIGNED)) {
 306                             kin.w1 = NFS_KERBW1(kt);
 307                             kt.mbz = 0;
 308                             (void)strcpy(inst, "*");
 309                             if (krb_rd_req(&kt, NFS_KERBSRV,
 310                                 inst, nsd.nsd_haddr, &kauth, "") == RD_AP_OK &&
 311                                 krb_kntoln(&kauth, lnam) == KSUCCESS &&
 312                                 (pwd = getpwnam(lnam)) != NULL) {
 313                                 cr = &nsd.nsd_cr;
 314                                 cr->cr_uid = pwd->pw_uid;
 315                                 cr->cr_groups[0] = pwd->pw_gid;
 316                                 cr->cr_ngroups = 1;
 317                                 setgrent();
 318                                 while ((grp = getgrent()) != NULL) {
 319                                         if (grp->gr_gid == cr->cr_groups[0])
 320                                                 continue;
 321                                         for (cpp = grp->gr_mem;
 322                                             *cpp != NULL; ++cpp)
 323                                                 if (!strcmp(*cpp, lnam))
 324                                                         break;
 325                                         if (*cpp == NULL)
 326                                                 continue;
 327                                         cr->cr_groups[cr->cr_ngroups++]
 328                                             = grp->gr_gid;
 329                                         if (cr->cr_ngroups == NGROUPS)
 330                                                 break;
 331                                 }
 332                                 endgrent();
 333
 334                                 /*
 335                                  * Get the timestamp verifier out of the
 336                                  * authenticator and verifier strings.
 337                                  */
 338                                 kin.t1 = kverf.t1;
 339                                 kin.t2 = kverf.t2;
 340                                 kin.w2 = kverf.w2;
 341                                 bzero((caddr_t)kivec, sizeof (kivec));
 342                                 bcopy((caddr_t)kauth.session,
 343                                     (caddr_t)nsd.nsd_key,sizeof(kauth.session));
 344
 345                                 /*
 346                                  * Decrypt the timestamp verifier in CBC mode.
 347                                  */
 348                                 XXX
 349
 350                                 /*
 351                                  * Validate the timestamp verifier, to
 352                                  * check that the session key is ok.
 353                                  */
 354                                 nsd.nsd_timestamp.tv_sec = ntohl(kout.t1);
 355                                 nsd.nsd_timestamp.tv_usec = ntohl(kout.t2);
 356                                 nsd.nsd_ttl = ntohl(kout.w1);
 357                                 if ((nsd.nsd_ttl - 1) == ntohl(kout.w2))
 358                                     nfssvc_flag = NFSSVC_NFSD | NFSSVC_AUTHIN;
 359                         }
 360 #endif /* NFSKERB */
 361                 }
 362                 exit(0);
 363         }
 364
 365         /* If we are serving udp, set up the socket. */
 366         if (udpflag) {
 367                 if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
 368                         syslog(LOG_ERR, "can't create udp socket");
 369                         exit(1);
 370                 }
 371                 inetaddr.sin_family = AF_INET;
 372                 inetaddr.sin_addr.s_addr = INADDR_ANY;
 373                 inetaddr.sin_port = htons(NFS_PORT);
 374                 inetaddr.sin_len = sizeof(inetaddr);
 375                 if (bind(sock,
 376                     (struct sockaddr *)&inetaddr, sizeof(inetaddr)) < 0) {
 377                         syslog(LOG_ERR, "can't bind udp addr");
 378                         exit(1);
 379                 }
 380                 if (!pmap_set(RPCPROG_NFS, 2, IPPROTO_UDP, NFS_PORT) ||
 381                     !pmap_set(RPCPROG_NFS, 3, IPPROTO_UDP, NFS_PORT)) {
 382                         syslog(LOG_ERR, "can't register with udp portmap");
 383                         exit(1);
 384                 }
 385                 nfsdargs.sock = sock;
 386                 nfsdargs.name = NULL;
 387                 nfsdargs.namelen = 0;
 388                 if (nfssvc(NFSSVC_ADDSOCK, &nfsdargs) < 0) {
 389                         syslog(LOG_ERR, "can't Add UDP socket");
 390                         exit(1);
 391                 }
 392                 (void)close(sock);
 393         }
 394
 395 #ifdef ISO
 396         /* If we are serving cltp, set up the socket. */
 397         if (cltpflag) {
 398                 if ((sock = socket(AF_ISO, SOCK_DGRAM, 0)) < 0) {
 399                         syslog(LOG_ERR, "can't create cltp socket");
 400                         exit(1);
 401                 }
 402                 memset(&isoaddr, 0, sizeof(isoaddr));
 403                 isoaddr.siso_family = AF_ISO;
 404                 isoaddr.siso_tlen = 2;
 405                 cp = TSEL(&isoaddr);
 406                 *cp++ = (NFS_PORT >> 8);
 407                 *cp = (NFS_PORT & 0xff);
 408                 isoaddr.siso_len = sizeof(isoaddr);
 409                 if (bind(sock,
 410                     (struct sockaddr *)&isoaddr, sizeof(isoaddr)) < 0) {
 411                         syslog(LOG_ERR, "can't bind cltp addr");
 412                         exit(1);
 413                 }
 414 #ifdef notyet
 415                 /*
 416                  * XXX
 417                  * Someday this should probably use "rpcbind", the son of
 418                  * portmap.
 419                  */
 420                 if (!pmap_set(RPCPROG_NFS, NFS_VER2, IPPROTO_UDP, NFS_PORT)) {
 421                         syslog(LOG_ERR, "can't register with udp portmap");
 422                         exit(1);
 423                 }
 424 #endif /* notyet */
 425                 nfsdargs.sock = sock;
 426                 nfsdargs.name = NULL;
 427                 nfsdargs.namelen = 0;
 428                 if (nfssvc(NFSSVC_ADDSOCK, &nfsdargs) < 0) {
 429                         syslog(LOG_ERR, "can't add UDP socket");
 430                         exit(1);
 431                 }
 432                 close(sock);
 433         }
 434 #endif /* ISO */
 435
 436         /* Now set up the master server socket waiting for tcp connections. */
 437         on = 1;
 438         FD_ZERO(&sockbits);
 439         connect_type_cnt = 0;
 440         if (tcpflag) {
 441                 if ((tcpsock = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
 442                         syslog(LOG_ERR, "can't create tcp socket");
 443                         exit(1);
 444                 }
 445                 if (setsockopt(tcpsock,
 446                     SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0)
 447                         syslog(LOG_ERR, "setsockopt SO_REUSEADDR: %m");
 448                 inetaddr.sin_family = AF_INET;
 449                 inetaddr.sin_addr.s_addr = INADDR_ANY;
 450                 inetaddr.sin_port = htons(NFS_PORT);
 451                 inetaddr.sin_len = sizeof(inetaddr);
 452                 if (bind(tcpsock,
 453                     (struct sockaddr *)&inetaddr, sizeof (inetaddr)) < 0) {
 454                         syslog(LOG_ERR, "can't bind tcp addr");
 455                         exit(1);
 456                 }
 457                 if (listen(tcpsock, 5) < 0) {
 458                         syslog(LOG_ERR, "listen failed");
 459                         exit(1);
 460                 }
 461                 if (!pmap_set(RPCPROG_NFS, 2, IPPROTO_TCP, NFS_PORT) ||
 462                     !pmap_set(RPCPROG_NFS, 3, IPPROTO_TCP, NFS_PORT)) {
 463                         syslog(LOG_ERR, "can't register tcp with portmap");
 464                         exit(1);
 465                 }
 466                 FD_SET(tcpsock, &sockbits);
 467                 maxsock = tcpsock;
 468                 connect_type_cnt++;
 469         }
 470
 471 #ifdef notyet
 472         /* Now set up the master server socket waiting for tp4 connections. */
 473         if (tp4flag) {
 474                 if ((tp4sock = socket(AF_ISO, SOCK_SEQPACKET, 0)) < 0) {
 475                         syslog(LOG_ERR, "can't create tp4 socket");
 476                         exit(1);
 477                 }
 478                 if (setsockopt(tp4sock,
 479                     SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0)
 480                         syslog(LOG_ERR, "setsockopt SO_REUSEADDR: %m");
 481                 memset(&isoaddr, 0, sizeof(isoaddr));
 482                 isoaddr.siso_family = AF_ISO;
 483                 isoaddr.siso_tlen = 2;
 484                 cp = TSEL(&isoaddr);
 485                 *cp++ = (NFS_PORT >> 8);
 486                 *cp = (NFS_PORT & 0xff);
 487                 isoaddr.siso_len = sizeof(isoaddr);
 488                 if (bind(tp4sock,
 489                     (struct sockaddr *)&isoaddr, sizeof (isoaddr)) < 0) {
 490                         syslog(LOG_ERR, "can't bind tp4 addr");
 491                         exit(1);
 492                 }
 493                 if (listen(tp4sock, 5) < 0) {
 494                         syslog(LOG_ERR, "listen failed");
 495                         exit(1);
 496                 }
 497                 /*
 498                  * XXX
 499                  * Someday this should probably use "rpcbind", the son of
 500                  * portmap.
 501                  */
 502                 if (!pmap_set(RPCPROG_NFS, NFS_VER2, IPPROTO_TCP, NFS_PORT)) {
 503                         syslog(LOG_ERR, "can't register tcp with portmap");
 504                         exit(1);
 505                 }
 506                 FD_SET(tp4sock, &sockbits);
 507                 maxsock = tp4sock;
 508                 connect_type_cnt++;
 509         }
 510
 511         /* Now set up the master server socket waiting for tpip connections. */
 512         if (tpipflag) {
 513                 if ((tpipsock = socket(AF_INET, SOCK_SEQPACKET, 0)) < 0) {
 514                         syslog(LOG_ERR, "can't create tpip socket");
 515                         exit(1);
 516                 }
 517                 if (setsockopt(tpipsock,
 518                     SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0)
 519                         syslog(LOG_ERR, "setsockopt SO_REUSEADDR: %m");
 520                 inetaddr.sin_family = AF_INET;
 521                 inetaddr.sin_addr.s_addr = INADDR_ANY;
 522                 inetaddr.sin_port = htons(NFS_PORT);
 523                 inetaddr.sin_len = sizeof(inetaddr);
 524                 if (bind(tpipsock,
 525                     (struct sockaddr *)&inetaddr, sizeof (inetaddr)) < 0) {
 526                         syslog(LOG_ERR, "can't bind tcp addr");
 527                         exit(1);
 528                 }
 529                 if (listen(tpipsock, 5) < 0) {
 530                         syslog(LOG_ERR, "listen failed");
 531                         exit(1);
 532                 }
 533                 /*
 534                  * XXX
 535                  * Someday this should probably use "rpcbind", the son of
 536                  * portmap.
 537                  */
 538                 if (!pmap_set(RPCPROG_NFS, NFS_VER2, IPPROTO_TCP, NFS_PORT)) {
 539                         syslog(LOG_ERR, "can't register tcp with portmap");
 540                         exit(1);
 541                 }
 542                 FD_SET(tpipsock, &sockbits);
 543                 maxsock = tpipsock;
 544                 connect_type_cnt++;
 545         }
 546 #endif /* notyet */
 547
 548         if (connect_type_cnt == 0)
 549                 exit(0);
 550
 551         setproctitle("master");
 552
 553         /*
 554          * Loop forever accepting connections and passing the sockets
 555          * into the kernel for the mounts.
 556          */
 557         for (;;) {
 558                 ready = sockbits;
 559                 if (connect_type_cnt > 1) {
 560                         if (select(maxsock + 1,
 561                             &ready, NULL, NULL, NULL) < 1) {
 562                                 syslog(LOG_ERR, "select failed: %m");
 563                                 exit(1);
 564                         }
 565                 }
 566                 if (tcpflag && FD_ISSET(tcpsock, &ready)) {
 567                         len = sizeof(inetpeer);
 568                         if ((msgsock = accept(tcpsock,
 569                             (struct sockaddr *)&inetpeer, &len)) < 0) {
 570                                 syslog(LOG_ERR, "accept failed: %m");
 571                                 exit(1);
 572                         }
 573                         memset(inetpeer.sin_zero, 0, sizeof(inetpeer.sin_zero));
 574                         if (setsockopt(msgsock, SOL_SOCKET,
 575                             SO_KEEPALIVE, (char *)&on, sizeof(on)) < 0)
 576                                 syslog(LOG_ERR,
 577                                     "setsockopt SO_KEEPALIVE: %m");
 578                         nfsdargs.sock = msgsock;
 579                         nfsdargs.name = (caddr_t)&inetpeer;
 580                         nfsdargs.namelen = sizeof(inetpeer);
 581                         nfssvc(NFSSVC_ADDSOCK, &nfsdargs);
 582                         (void)close(msgsock);
 583                 }
 584 #ifdef notyet
 585                 if (tp4flag && FD_ISSET(tp4sock, &ready)) {
 586                         len = sizeof(isopeer);
 587                         if ((msgsock = accept(tp4sock,
 588                             (struct sockaddr *)&isopeer, &len)) < 0) {
 589                                 syslog(LOG_ERR, "accept failed: %m");
 590                                 exit(1);
 591                         }
 592                         if (setsockopt(msgsock, SOL_SOCKET,
 593                             SO_KEEPALIVE, (char *)&on, sizeof(on)) < 0)
 594                                 syslog(LOG_ERR,
 595                                     "setsockopt SO_KEEPALIVE: %m");
 596                         nfsdargs.sock = msgsock;
 597                         nfsdargs.name = (caddr_t)&isopeer;
 598                         nfsdargs.namelen = len;
 599                         nfssvc(NFSSVC_ADDSOCK, &nfsdargs);
 600                         (void)close(msgsock);
 601                 }
 602                 if (tpipflag && FD_ISSET(tpipsock, &ready)) {
 603                         len = sizeof(inetpeer);
 604                         if ((msgsock = accept(tpipsock,
 605                             (struct sockaddr *)&inetpeer, &len)) < 0) {
 606                                 syslog(LOG_ERR, "Accept failed: %m");
 607                                 exit(1);
 608                         }
 609                         if (setsockopt(msgsock, SOL_SOCKET,
 610                             SO_KEEPALIVE, (char *)&on, sizeof(on)) < 0)
 611                                 syslog(LOG_ERR, "setsockopt SO_KEEPALIVE: %m");
 612                         nfsdargs.sock = msgsock;
 613                         nfsdargs.name = (caddr_t)&inetpeer;
 614                         nfsdargs.namelen = len;
 615                         nfssvc(NFSSVC_ADDSOCK, &nfsdargs);
 616                         (void)close(msgsock);
 617                 }
 618 #endif /* notyet */
 619         }
 620 }
 621
 622 void
 623 usage()
 624 {
 625         (void)fprintf(stderr, "usage: nfsd %s\n", USAGE);
 626         exit(1);
 627 }
 628
 629 void
 630 nonfs(signo)
 631         int signo;
 632 {
 633         syslog(LOG_ERR, "missing system call: NFS not available.");
 634 }
 635
 636 void
 637 reapchild(signo)
 638         int signo;
 639 {
 640
 641         while (wait3(NULL, WNOHANG, NULL) > 0);
 642 }
 643
 644 void
 645 setproctitle(a)
 646         char *a;
 647 {
 648         register char *cp;
 649         char buf[80];
 650
 651         cp = Argv[0];
 652         (void)snprintf(buf, sizeof(buf), "nfsd-%s", a);
 653         (void)strncpy(cp, buf, LastArg - cp);
 654         cp += strlen(cp);
 655         while (cp < LastArg)
 656                 *cp++ = '\0';
 657 }