nfsd.tproj/nfsd.c

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23 /*
  24  * Copyright (c) 1989, 1993, 1994
  25  *      The Regents of the University of California.  All rights reserved.
  26  *
  27  * This code is derived from software contributed to Berkeley by
  28  * Rick Macklem at The University of Guelph.
  29  *
  30  * Redistribution and use in source and binary forms, with or without
  31  * modification, are permitted provided that the following conditions
  32  * are met:
  33  * 1. Redistributions of source code must retain the above copyright
  34  *    notice, this list of conditions and the following disclaimer.
  35  * 2. Redistributions in binary form must reproduce the above copyright
  36  *    notice, this list of conditions and the following disclaimer in the
  37  *    documentation and/or other materials provided with the distribution.
  38  * 3. All advertising materials mentioning features or use of this software
  39  *    must display the following acknowledgement:
  40  *      This product includes software developed by the University of
  41  *      California, Berkeley and its contributors.
  42  * 4. Neither the name of the University nor the names of its contributors
  43  *    may be used to endorse or promote products derived from this software
  44  *    without specific prior written permission.
  45  *
  46  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  47  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  48  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  49  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  50  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  51  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  52  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  53  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  54  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  55  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  56  * SUCH DAMAGE.
  57  */
  58
  59
  60 #include <sys/param.h>
  61 #include <sys/syslog.h>
  62 #include <sys/ioctl.h>
  63 #include <sys/stat.h>
  64 #include <sys/wait.h>
  65 #include <sys/uio.h>
  66 #include <sys/ucred.h>
  67 #include <sys/mount.h>
  68 #include <sys/socket.h>
  69 #include <sys/socketvar.h>
  70
  71 #include <rpc/rpc.h>
  72 #include <rpc/pmap_clnt.h>
  73 #include <rpc/pmap_prot.h>
  74
  75 #ifdef ISO
  76 #include <netiso/iso.h>
  77 #endif
  78 #include <nfs/rpcv2.h>
  79 #include <nfs/nfsproto.h>
  80 #include <nfs/nfs.h>
  81
  82 #ifdef NFSKERB
  83 #include <kerberosIV/des.h>
  84 #include <kerberosIV/krb.h>
  85 #endif
  86
  87 #include <err.h>
  88 #include <errno.h>
  89 #include <fcntl.h>
  90 #include <grp.h>
  91 #include <pwd.h>
  92 #include <signal.h>
  93 #include <stdio.h>
  94 #include <stdlib.h>
  95 #include <strings.h>
  96 #include <unistd.h>
  97
  98 /* Global defs */
  99 #ifdef DEBUG
 100 #define syslog(e, s)    fprintf(stderr,(s))
 101 int     debug = 1;
 102 #else
 103 int     debug = 0;
 104 #endif
 105
 106 struct  nfsd_srvargs nsd;
 107 char    **Argv = NULL;          /* pointer to argument vector */
 108 char    *LastArg = NULL;        /* end of argv */
 109
 110 #ifdef NFSKERB
 111 char            lnam[ANAME_SZ];
 112 KTEXT_ST        kt;
 113 AUTH_DAT        kauth;
 114 char            inst[INST_SZ];
 115 struct nfsrpc_fullblock kin, kout;
 116 struct nfsrpc_fullverf kverf;
 117 NFSKERBKEY_T    kivec;
 118 struct timeval  ktv;
 119 NFSKERBKEYSCHED_T kerb_keysched;
 120 #endif
 121
 122 void    nonfs __P((int));
 123 void    reapchild __P((int));
 124 void    setproctitle __P((char *));
 125 void    usage __P((void));
 126
 127 /*
 128  * Nfs server daemon mostly just a user context for nfssvc()
 129  *
 130  * 1 - do file descriptor and signal cleanup
 131  * 2 - fork the nfsd(s)
 132  * 3 - create server socket(s)
 133  * 4 - register socket with portmap
 134  *
 135  * For connectionless protocols, just pass the socket into the kernel via.
 136  * nfssvc().
 137  * For connection based sockets, loop doing accepts. When you get a new
 138  * socket from accept, pass the msgsock into the kernel via. nfssvc().
 139  * The arguments are:
 140  *      -c - support iso cltp clients
 141  *      -r - reregister with portmapper
 142  *      -t - support tcp nfs clients
 143  *      -u - support udp nfs clients
 144  * followed by "n" which is the number of nfsds' to fork off
 145  */
 146 int
 147 main(argc, argv, envp)
 148         int argc;
 149         char *argv[], *envp[];
 150 {
 151         extern int optind;
 152         struct group *grp;
 153         struct nfsd_args nfsdargs;
 154         struct passwd *pwd;
 155         struct ucred *cr;
 156         struct sockaddr_in inetaddr, inetpeer;
 157 #ifdef ISO
 158         struct sockaddr_iso isoaddr, isopeer;
 159 #endif
 160         struct timeval ktv;
 161         fd_set ready, sockbits;
 162         int ch, cltpflag, connect_type_cnt, i, len, maxsock, msgsock;
 163         int nfsdcnt, nfssvc_flag, on, reregister, sock, tcpflag, tcpsock;
 164         int tp4cnt, tp4flag, tp4sock, tpipcnt, tpipflag, tpipsock, udpflag;
 165         char *cp, **cpp;
 166
 167         /* Save start and extent of argv for setproctitle. */
 168         Argv = argv;
 169         if (envp == 0 || *envp == 0)
 170                 envp = argv;
 171         while (*envp)
 172                 envp++;
 173         LastArg = envp[-1] + strlen(envp[-1]);
 174
 175 #define MAXNFSDCNT      64
 176 #define DEFNFSDCNT       4
 177         nfsdcnt = DEFNFSDCNT;
 178         cltpflag = reregister = tcpflag = tp4cnt = tp4flag = tpipcnt = 0;
 179         tpipflag = udpflag = 0;
 180 #ifdef ISO
 181 #define GETOPT  "cn:rtu"
 182 #define USAGE   "[-crtu] [-n num_servers]"
 183 #else
 184 #define GETOPT  "n:rtu"
 185 #define USAGE   "[-rtu] [-n num_servers]"
 186 #endif
 187         while ((ch = getopt(argc, argv, GETOPT)) != EOF)
 188                 switch (ch) {
 189                 case 'n':
 190                         nfsdcnt = atoi(optarg);
 191                         if (nfsdcnt < 1 || nfsdcnt > MAXNFSDCNT) {
 192                                 warnx("nfsd count %d; reset to %d", nfsdcnt, DEFNFSDCNT);
 193                                 nfsdcnt = DEFNFSDCNT;
 194                         }
 195                         break;
 196                 case 'r':
 197                         reregister = 1;
 198                         break;
 199                 case 't':
 200                         tcpflag = 1;
 201                         break;
 202                 case 'u':
 203                         udpflag = 1;
 204                         break;
 205 #ifdef ISO
 206                 case 'c':
 207                         cltpflag = 1;
 208                         break;
 209 #ifdef notyet
 210                 case 'i':
 211                         tp4cnt = 1;
 212                         break;
 213                 case 'p':
 214                         tpipcnt = 1;
 215                         break;
 216 #endif /* notyet */
 217 #endif /* ISO */
 218                 default:
 219                 case '?':
 220                         usage();
 221                 };
 222         argv += optind;
 223         argc -= optind;
 224
 225         /*
 226          * XXX
 227          * Backward compatibility, trailing number is the count of daemons.
 228          */
 229         if (argc > 1)
 230                 usage();
 231         if (argc == 1) {
 232                 nfsdcnt = atoi(argv[0]);
 233                 if (nfsdcnt < 1 || nfsdcnt > MAXNFSDCNT) {
 234                         warnx("nfsd count %d; reset to %d", nfsdcnt, DEFNFSDCNT);
 235                         nfsdcnt = DEFNFSDCNT;
 236                 }
 237         }
 238
 239         if (debug == 0) {
 240                 daemon(0, 0);
 241                 (void)signal(SIGHUP, SIG_IGN);
 242                 (void)signal(SIGINT, SIG_IGN);
 243                 (void)signal(SIGQUIT, SIG_IGN);
 244                 (void)signal(SIGSYS, nonfs);
 245                 (void)signal(SIGTERM, SIG_IGN);
 246         }
 247         (void)signal(SIGCHLD, reapchild);
 248
 249         if (reregister) {
 250                 if (udpflag &&
 251                     (!pmap_set(RPCPROG_NFS, 2, IPPROTO_UDP, NFS_PORT) ||
 252                      !pmap_set(RPCPROG_NFS, 3, IPPROTO_UDP, NFS_PORT)))
 253                         err(1, "can't register with portmap for UDP.");
 254                 if (tcpflag &&
 255                     (!pmap_set(RPCPROG_NFS, 2, IPPROTO_TCP, NFS_PORT) ||
 256                      !pmap_set(RPCPROG_NFS, 3, IPPROTO_TCP, NFS_PORT)))
 257                         err(1, "can't register with portmap for TCP.");
 258                 exit(0);
 259         }
 260         openlog("nfsd:", LOG_PID, LOG_DAEMON);
 261
 262         for (i = 0; i < nfsdcnt; i++) {
 263                 switch (fork()) {
 264                 case -1:
 265                         syslog(LOG_ERR, "fork: %m");
 266                         exit (1);
 267                 case 0:
 268                         break;
 269                 default:
 270                         continue;
 271                 }
 272
 273                 setproctitle("server");
 274                 nfssvc_flag = NFSSVC_NFSD;
 275                 nsd.nsd_nfsd = NULL;
 276 #ifdef NFSKERB
 277                 if (sizeof (struct nfsrpc_fullverf) != RPCX_FULLVERF ||
 278                     sizeof (struct nfsrpc_fullblock) != RPCX_FULLBLOCK)
 279                     syslog(LOG_ERR, "Yikes NFSKERB structs not packed!");
 280                 nsd.nsd_authstr = (u_char *)&kt;
 281                 nsd.nsd_authlen = sizeof (kt);
 282                 nsd.nsd_verfstr = (u_char *)&kverf;
 283                 nsd.nsd_verflen = sizeof (kverf);
 284 #endif
 285                 while (nfssvc(nfssvc_flag, &nsd) < 0) {
 286                         if (errno != ENEEDAUTH) {
 287                                 syslog(LOG_ERR, "nfssvc: %m");
 288                                 exit(1);
 289                         }
 290                         nfssvc_flag = NFSSVC_NFSD | NFSSVC_AUTHINFAIL;
 291 #ifdef NFSKERB
 292                         /*
 293                          * Get the Kerberos ticket out of the authenticator
 294                          * verify it and convert the principal name to a user
 295                          * name. The user name is then converted to a set of
 296                          * user credentials via the password and group file.
 297                          * Finally, decrypt the timestamp and validate it.
 298                          * For more info see the IETF Draft "Authentication
 299                          * in ONC RPC".
 300                          */
 301                         kt.length = ntohl(kt.length);
 302                         if (gettimeofday(&ktv, (struct timezone *)0) == 0 &&
 303                             kt.length > 0 && kt.length <=
 304                             (RPCAUTH_MAXSIZ - 3 * NFSX_UNSIGNED)) {
 305                             kin.w1 = NFS_KERBW1(kt);
 306                             kt.mbz = 0;
 307                             (void)strcpy(inst, "*");
 308                             if (krb_rd_req(&kt, NFS_KERBSRV,
 309                                 inst, nsd.nsd_haddr, &kauth, "") == RD_AP_OK &&
 310                                 krb_kntoln(&kauth, lnam) == KSUCCESS &&
 311                                 (pwd = getpwnam(lnam)) != NULL) {
 312                                 cr = &nsd.nsd_cr;
 313                                 cr->cr_uid = pwd->pw_uid;
 314                                 cr->cr_groups[0] = pwd->pw_gid;
 315                                 cr->cr_ngroups = 1;
 316                                 setgrent();
 317                                 while ((grp = getgrent()) != NULL) {
 318                                         if (grp->gr_gid == cr->cr_groups[0])
 319                                                 continue;
 320                                         for (cpp = grp->gr_mem;
 321                                             *cpp != NULL; ++cpp)
 322                                                 if (!strcmp(*cpp, lnam))
 323                                                         break;
 324                                         if (*cpp == NULL)
 325                                                 continue;
 326                                         cr->cr_groups[cr->cr_ngroups++]
 327                                             = grp->gr_gid;
 328                                         if (cr->cr_ngroups == NGROUPS)
 329                                                 break;
 330                                 }
 331                                 endgrent();
 332
 333                                 /*
 334                                  * Get the timestamp verifier out of the
 335                                  * authenticator and verifier strings.
 336                                  */
 337                                 kin.t1 = kverf.t1;
 338                                 kin.t2 = kverf.t2;
 339                                 kin.w2 = kverf.w2;
 340                                 bzero((caddr_t)kivec, sizeof (kivec));
 341                                 bcopy((caddr_t)kauth.session,
 342                                     (caddr_t)nsd.nsd_key,sizeof(kauth.session));
 343
 344                                 /*
 345                                  * Decrypt the timestamp verifier in CBC mode.
 346                                  */
 347                                 XXX
 348
 349                                 /*
 350                                  * Validate the timestamp verifier, to
 351                                  * check that the session key is ok.
 352                                  */
 353                                 nsd.nsd_timestamp.tv_sec = ntohl(kout.t1);
 354                                 nsd.nsd_timestamp.tv_usec = ntohl(kout.t2);
 355                                 nsd.nsd_ttl = ntohl(kout.w1);
 356                                 if ((nsd.nsd_ttl - 1) == ntohl(kout.w2))
 357                                     nfssvc_flag = NFSSVC_NFSD | NFSSVC_AUTHIN;
 358                         }
 359 #endif /* NFSKERB */
 360                 }
 361                 exit(0);
 362         }
 363
 364         /* If we are serving udp, set up the socket. */
 365         if (udpflag) {
 366                 if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
 367                         syslog(LOG_ERR, "can't create udp socket");
 368                         exit(1);
 369                 }
 370                 inetaddr.sin_family = AF_INET;
 371                 inetaddr.sin_addr.s_addr = INADDR_ANY;
 372                 inetaddr.sin_port = htons(NFS_PORT);
 373                 inetaddr.sin_len = sizeof(inetaddr);
 374                 if (bind(sock,
 375                     (struct sockaddr *)&inetaddr, sizeof(inetaddr)) < 0) {
 376                         syslog(LOG_ERR, "can't bind udp addr");
 377                         exit(1);
 378                 }
 379                 if (!pmap_set(RPCPROG_NFS, 2, IPPROTO_UDP, NFS_PORT) ||
 380                     !pmap_set(RPCPROG_NFS, 3, IPPROTO_UDP, NFS_PORT)) {
 381                         syslog(LOG_ERR, "can't register with udp portmap");
 382                         exit(1);
 383                 }
 384                 nfsdargs.sock = sock;
 385                 nfsdargs.name = NULL;
 386                 nfsdargs.namelen = 0;
 387                 if (nfssvc(NFSSVC_ADDSOCK, &nfsdargs) < 0) {
 388                         syslog(LOG_ERR, "can't Add UDP socket");
 389                         exit(1);
 390                 }
 391                 (void)close(sock);
 392         }
 393
 394 #ifdef ISO
 395         /* If we are serving cltp, set up the socket. */
 396         if (cltpflag) {
 397                 if ((sock = socket(AF_ISO, SOCK_DGRAM, 0)) < 0) {
 398                         syslog(LOG_ERR, "can't create cltp socket");
 399                         exit(1);
 400                 }
 401                 memset(&isoaddr, 0, sizeof(isoaddr));
 402                 isoaddr.siso_family = AF_ISO;
 403                 isoaddr.siso_tlen = 2;
 404                 cp = TSEL(&isoaddr);
 405                 *cp++ = (NFS_PORT >> 8);
 406                 *cp = (NFS_PORT & 0xff);
 407                 isoaddr.siso_len = sizeof(isoaddr);
 408                 if (bind(sock,
 409                     (struct sockaddr *)&isoaddr, sizeof(isoaddr)) < 0) {
 410                         syslog(LOG_ERR, "can't bind cltp addr");
 411                         exit(1);
 412                 }
 413 #ifdef notyet
 414                 /*
 415                  * XXX
 416                  * Someday this should probably use "rpcbind", the son of
 417                  * portmap.
 418                  */
 419                 if (!pmap_set(RPCPROG_NFS, NFS_VER2, IPPROTO_UDP, NFS_PORT)) {
 420                         syslog(LOG_ERR, "can't register with udp portmap");
 421                         exit(1);
 422                 }
 423 #endif /* notyet */
 424                 nfsdargs.sock = sock;
 425                 nfsdargs.name = NULL;
 426                 nfsdargs.namelen = 0;
 427                 if (nfssvc(NFSSVC_ADDSOCK, &nfsdargs) < 0) {
 428                         syslog(LOG_ERR, "can't add UDP socket");
 429                         exit(1);
 430                 }
 431                 close(sock);
 432         }
 433 #endif /* ISO */
 434
 435         /* Now set up the master server socket waiting for tcp connections. */
 436         on = 1;
 437         FD_ZERO(&sockbits);
 438         connect_type_cnt = 0;
 439         if (tcpflag) {
 440                 if ((tcpsock = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
 441                         syslog(LOG_ERR, "can't create tcp socket");
 442                         exit(1);
 443                 }
 444                 if (setsockopt(tcpsock,
 445                     SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0)
 446                         syslog(LOG_ERR, "setsockopt SO_REUSEADDR: %m");
 447                 inetaddr.sin_family = AF_INET;
 448                 inetaddr.sin_addr.s_addr = INADDR_ANY;
 449                 inetaddr.sin_port = htons(NFS_PORT);
 450                 inetaddr.sin_len = sizeof(inetaddr);
 451                 if (bind(tcpsock,
 452                     (struct sockaddr *)&inetaddr, sizeof (inetaddr)) < 0) {
 453                         syslog(LOG_ERR, "can't bind tcp addr");
 454                         exit(1);
 455                 }
 456                 if (listen(tcpsock, 5) < 0) {
 457                         syslog(LOG_ERR, "listen failed");
 458                         exit(1);
 459                 }
 460                 if (!pmap_set(RPCPROG_NFS, 2, IPPROTO_TCP, NFS_PORT) ||
 461                     !pmap_set(RPCPROG_NFS, 3, IPPROTO_TCP, NFS_PORT)) {
 462                         syslog(LOG_ERR, "can't register tcp with portmap");
 463                         exit(1);
 464                 }
 465                 FD_SET(tcpsock, &sockbits);
 466                 maxsock = tcpsock;
 467                 connect_type_cnt++;
 468         }
 469
 470 #ifdef notyet
 471         /* Now set up the master server socket waiting for tp4 connections. */
 472         if (tp4flag) {
 473                 if ((tp4sock = socket(AF_ISO, SOCK_SEQPACKET, 0)) < 0) {
 474                         syslog(LOG_ERR, "can't create tp4 socket");
 475                         exit(1);
 476                 }
 477                 if (setsockopt(tp4sock,
 478                     SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0)
 479                         syslog(LOG_ERR, "setsockopt SO_REUSEADDR: %m");
 480                 memset(&isoaddr, 0, sizeof(isoaddr));
 481                 isoaddr.siso_family = AF_ISO;
 482                 isoaddr.siso_tlen = 2;
 483                 cp = TSEL(&isoaddr);
 484                 *cp++ = (NFS_PORT >> 8);
 485                 *cp = (NFS_PORT & 0xff);
 486                 isoaddr.siso_len = sizeof(isoaddr);
 487                 if (bind(tp4sock,
 488                     (struct sockaddr *)&isoaddr, sizeof (isoaddr)) < 0) {
 489                         syslog(LOG_ERR, "can't bind tp4 addr");
 490                         exit(1);
 491                 }
 492                 if (listen(tp4sock, 5) < 0) {
 493                         syslog(LOG_ERR, "listen failed");
 494                         exit(1);
 495                 }
 496                 /*
 497                  * XXX
 498                  * Someday this should probably use "rpcbind", the son of
 499                  * portmap.
 500                  */
 501                 if (!pmap_set(RPCPROG_NFS, NFS_VER2, IPPROTO_TCP, NFS_PORT)) {
 502                         syslog(LOG_ERR, "can't register tcp with portmap");
 503                         exit(1);
 504                 }
 505                 FD_SET(tp4sock, &sockbits);
 506                 maxsock = tp4sock;
 507                 connect_type_cnt++;
 508         }
 509
 510         /* Now set up the master server socket waiting for tpip connections. */
 511         if (tpipflag) {
 512                 if ((tpipsock = socket(AF_INET, SOCK_SEQPACKET, 0)) < 0) {
 513                         syslog(LOG_ERR, "can't create tpip socket");
 514                         exit(1);
 515                 }
 516                 if (setsockopt(tpipsock,
 517                     SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0)
 518                         syslog(LOG_ERR, "setsockopt SO_REUSEADDR: %m");
 519                 inetaddr.sin_family = AF_INET;
 520                 inetaddr.sin_addr.s_addr = INADDR_ANY;
 521                 inetaddr.sin_port = htons(NFS_PORT);
 522                 inetaddr.sin_len = sizeof(inetaddr);
 523                 if (bind(tpipsock,
 524                     (struct sockaddr *)&inetaddr, sizeof (inetaddr)) < 0) {
 525                         syslog(LOG_ERR, "can't bind tcp addr");
 526                         exit(1);
 527                 }
 528                 if (listen(tpipsock, 5) < 0) {
 529                         syslog(LOG_ERR, "listen failed");
 530                         exit(1);
 531                 }
 532                 /*
 533                  * XXX
 534                  * Someday this should probably use "rpcbind", the son of
 535                  * portmap.
 536                  */
 537                 if (!pmap_set(RPCPROG_NFS, NFS_VER2, IPPROTO_TCP, NFS_PORT)) {
 538                         syslog(LOG_ERR, "can't register tcp with portmap");
 539                         exit(1);
 540                 }
 541                 FD_SET(tpipsock, &sockbits);
 542                 maxsock = tpipsock;
 543                 connect_type_cnt++;
 544         }
 545 #endif /* notyet */
 546
 547         if (connect_type_cnt == 0)
 548                 exit(0);
 549
 550         setproctitle("master");
 551
 552         /*
 553          * Loop forever accepting connections and passing the sockets
 554          * into the kernel for the mounts.
 555          */
 556         for (;;) {
 557                 ready = sockbits;
 558                 if (connect_type_cnt > 1) {
 559                         if (select(maxsock + 1,
 560                             &ready, NULL, NULL, NULL) < 1) {
 561                                 syslog(LOG_ERR, "select failed: %m");
 562                                 exit(1);
 563                         }
 564                 }
 565                 if (tcpflag && FD_ISSET(tcpsock, &ready)) {
 566                         len = sizeof(inetpeer);
 567                         if ((msgsock = accept(tcpsock,
 568                             (struct sockaddr *)&inetpeer, &len)) < 0) {
 569                                 syslog(LOG_ERR, "accept failed: %m");
 570                                 exit(1);
 571                         }
 572                         memset(inetpeer.sin_zero, 0, sizeof(inetpeer.sin_zero));
 573                         if (setsockopt(msgsock, SOL_SOCKET,
 574                             SO_KEEPALIVE, (char *)&on, sizeof(on)) < 0)
 575                                 syslog(LOG_ERR,
 576                                     "setsockopt SO_KEEPALIVE: %m");
 577                         nfsdargs.sock = msgsock;
 578                         nfsdargs.name = (caddr_t)&inetpeer;
 579                         nfsdargs.namelen = sizeof(inetpeer);
 580                         nfssvc(NFSSVC_ADDSOCK, &nfsdargs);
 581                         (void)close(msgsock);
 582                 }
 583 #ifdef notyet
 584                 if (tp4flag && FD_ISSET(tp4sock, &ready)) {
 585                         len = sizeof(isopeer);
 586                         if ((msgsock = accept(tp4sock,
 587                             (struct sockaddr *)&isopeer, &len)) < 0) {
 588                                 syslog(LOG_ERR, "accept failed: %m");
 589                                 exit(1);
 590                         }
 591                         if (setsockopt(msgsock, SOL_SOCKET,
 592                             SO_KEEPALIVE, (char *)&on, sizeof(on)) < 0)
 593                                 syslog(LOG_ERR,
 594                                     "setsockopt SO_KEEPALIVE: %m");
 595                         nfsdargs.sock = msgsock;
 596                         nfsdargs.name = (caddr_t)&isopeer;
 597                         nfsdargs.namelen = len;
 598                         nfssvc(NFSSVC_ADDSOCK, &nfsdargs);
 599                         (void)close(msgsock);
 600                 }
 601                 if (tpipflag && FD_ISSET(tpipsock, &ready)) {
 602                         len = sizeof(inetpeer);
 603                         if ((msgsock = accept(tpipsock,
 604                             (struct sockaddr *)&inetpeer, &len)) < 0) {
 605                                 syslog(LOG_ERR, "Accept failed: %m");
 606                                 exit(1);
 607                         }
 608                         if (setsockopt(msgsock, SOL_SOCKET,
 609                             SO_KEEPALIVE, (char *)&on, sizeof(on)) < 0)
 610                                 syslog(LOG_ERR, "setsockopt SO_KEEPALIVE: %m");
 611                         nfsdargs.sock = msgsock;
 612                         nfsdargs.name = (caddr_t)&inetpeer;
 613                         nfsdargs.namelen = len;
 614                         nfssvc(NFSSVC_ADDSOCK, &nfsdargs);
 615                         (void)close(msgsock);
 616                 }
 617 #endif /* notyet */
 618         }
 619 }
 620
 621 void
 622 usage()
 623 {
 624         (void)fprintf(stderr, "usage: nfsd %s\n", USAGE);
 625         exit(1);
 626 }
 627
 628 void
 629 nonfs(signo)
 630         int signo;
 631 {
 632         syslog(LOG_ERR, "missing system call: NFS not available.");
 633 }
 634
 635 void
 636 reapchild(signo)
 637         int signo;
 638 {
 639
 640         while (wait3(NULL, WNOHANG, NULL) > 0);
 641 }
 642
 643 void
 644 setproctitle(a)
 645         char *a;
 646 {
 647         register char *cp;
 648         char buf[80];
 649
 650         cp = Argv[0];
 651         (void)snprintf(buf, sizeof(buf), "nfsd-%s", a);
 652         (void)strncpy(cp, buf, LastArg - cp);
 653         cp += strlen(cp);
 654         while (cp < LastArg)
 655                 *cp++ = '\0';
 656 }