nfsd.c revision 1.44
1 /* $NetBSD: nfsd.c,v 1.44 2003/12/06 03:01:16 jonathan 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\n\ 38 The Regents of the University of California. All rights reserved.\n"); 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 1.44 2003/12/06 03:01:16 jonathan 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 #ifdef ISO 65 #include <netiso/iso.h> 66 #endif 67 #include <nfs/rpcv2.h> 68 #include <nfs/nfsproto.h> 69 #include <nfs/nfs.h> 70 71 #ifdef NFSKERB 72 #include <des.h> 73 #include <kerberosIV/krb.h> 74 #endif 75 76 #include <err.h> 77 #include <errno.h> 78 #include <fcntl.h> 79 #include <grp.h> 80 #include <pwd.h> 81 #include <signal.h> 82 #include <stdio.h> 83 #include <stdlib.h> 84 #include <string.h> 85 #include <syslog.h> 86 #include <unistd.h> 87 #include <netdb.h> 88 89 /* Global defs */ 90 #ifdef DEBUG 91 #define syslog(e, s) fprintf(stderr,(s)) 92 int debug = 1; 93 #else 94 int debug = 0; 95 #endif 96 97 struct nfsd_srvargs nsd; 98 99 #ifdef NFSKERB 100 char lnam[ANAME_SZ]; 101 KTEXT_ST kt; 102 AUTH_DAT kauth; 103 char inst[INST_SZ]; 104 struct nfsrpc_fullblock kin, kout; 105 struct nfsrpc_fullverf kverf; 106 NFSKERBKEY_T kivec; 107 struct timeval ktv; 108 NFSKERBKEYSCHED_T kerb_keysched; 109 #endif 110 111 int main __P((int, char **)); 112 void nonfs __P((int)); 113 void reapchild __P((int)); 114 void usage __P((void)); 115 116 /* 117 * Nfs server daemon mostly just a user context for nfssvc() 118 * 119 * 1 - do file descriptor and signal cleanup 120 * 2 - fork the nfsd(s) 121 * 3 - create server socket(s) 122 * 4 - register socket with portmap 123 * 124 * For connectionless protocols, just pass the socket into the kernel via 125 * nfssvc(). 126 * For connection based sockets, loop doing accepts. When you get a new 127 * socket from accept, pass the msgsock into the kernel via nfssvc(). 128 * The arguments are: 129 * -c - support iso cltp clients 130 * -r - reregister with portmapper 131 * -t - support tcp nfs clients 132 * -u - support udp nfs clients 133 * followed by "n" which is the number of nfsds' to fork off 134 */ 135 int 136 main(argc, argv) 137 int argc; 138 char *argv[]; 139 { 140 struct nfsd_args nfsdargs; 141 struct addrinfo *ai_udp, *ai_tcp, *ai_udp6, *ai_tcp6, hints; 142 struct netconfig *nconf_udp, *nconf_tcp, *nconf_udp6, *nconf_tcp6; 143 struct netbuf nb_udp, nb_tcp, nb_udp6, nb_tcp6; 144 struct sockaddr_in inetpeer; 145 struct sockaddr_in6 inet6peer; 146 #ifdef ISO 147 struct sockaddr_iso isoaddr, isopeer; 148 #endif 149 struct pollfd set[4]; 150 int ch, cltpflag, connect_type_cnt, i, len, maxsock, msgsock; 151 int nfsdcnt, nfssvc_flag, on = 1, reregister, sock, tcpflag, tcpsock; 152 int tcp6sock, ip6flag; 153 int tp4cnt, tp4flag, tpipcnt, tpipflag, udpflag, ecode, s; 154 #ifdef NFSKERB 155 struct group *grp; 156 struct passwd *pwd; 157 struct ucred *cr; 158 struct timeval ktv; 159 int tp4sock, tpipsock; 160 char *cp, **cpp; 161 #endif 162 163 #define MAXNFSDCNT 1024 164 #define DEFNFSDCNT 4 165 nfsdcnt = DEFNFSDCNT; 166 cltpflag = reregister = tcpflag = tp4cnt = tp4flag = tpipcnt = 0; 167 tpipflag = udpflag = ip6flag = 0; 168 maxsock = tcpsock = 0; 169 #ifdef ISO 170 #define GETOPT "6cn:rtu" 171 #define USAGE "[-crtu] [-n num_servers]" 172 #else 173 #define GETOPT "6n:rtu" 174 #define USAGE "[-rtu] [-n num_servers]" 175 #endif 176 while ((ch = getopt(argc, argv, GETOPT)) != -1) { 177 switch (ch) { 178 case '6': 179 ip6flag = 1; 180 s = socket(PF_INET6, SOCK_DGRAM, IPPROTO_UDP); 181 if (s < 0 && (errno == EPROTONOSUPPORT || 182 errno == EPFNOSUPPORT || errno == EAFNOSUPPORT)) 183 ip6flag = 0; 184 else 185 close(s); 186 break; 187 case 'n': 188 nfsdcnt = atoi(optarg); 189 if (nfsdcnt < 1 || nfsdcnt > MAXNFSDCNT) { 190 warnx("nfsd count %d; reset to %d", nfsdcnt, DEFNFSDCNT); 191 nfsdcnt = DEFNFSDCNT; 192 } 193 break; 194 case 'r': 195 reregister = 1; 196 break; 197 case 't': 198 tcpflag = 1; 199 break; 200 case 'u': 201 udpflag = 1; 202 break; 203 #ifdef ISO 204 case 'c': 205 cltpflag = 1; 206 break; 207 #ifdef notyet 208 case 'i': 209 tp4cnt = 1; 210 break; 211 case 'p': 212 tpipcnt = 1; 213 break; 214 #endif /* notyet */ 215 #endif /* ISO */ 216 default: 217 case '?': 218 usage(); 219 }; 220 } 221 argv += optind; 222 argc -= optind; 223 224 /* 225 * XXX 226 * Backward compatibility, trailing number is the count of daemons. 227 */ 228 if (argc > 1) 229 usage(); 230 if (argc == 1) { 231 nfsdcnt = atoi(argv[0]); 232 if (nfsdcnt < 1 || nfsdcnt > MAXNFSDCNT) { 233 warnx("nfsd count %d; reset to %d", nfsdcnt, DEFNFSDCNT); 234 nfsdcnt = DEFNFSDCNT; 235 } 236 } 237 238 /* 239 * If none of TCP or UDP are specified, default to UDP only. 240 */ 241 if (tcpflag == 0 && udpflag == 0) 242 udpflag = 1; 243 244 if (debug == 0) { 245 daemon(0, 0); 246 (void)signal(SIGHUP, SIG_IGN); 247 (void)signal(SIGINT, SIG_IGN); 248 (void)signal(SIGQUIT, SIG_IGN); 249 (void)signal(SIGSYS, nonfs); 250 } 251 (void)signal(SIGCHLD, reapchild); 252 253 if (udpflag) { 254 memset(&hints, 0, sizeof hints); 255 hints.ai_flags = AI_PASSIVE; 256 hints.ai_family = PF_INET; 257 hints.ai_socktype = SOCK_DGRAM; 258 hints.ai_protocol = IPPROTO_UDP; 259 260 ecode = getaddrinfo(NULL, "nfs", &hints, &ai_udp); 261 if (ecode != 0) { 262 syslog(LOG_ERR, "getaddrinfo udp: %s", 263 gai_strerror(ecode)); 264 exit(1); 265 } 266 267 nconf_udp = getnetconfigent("udp"); 268 269 if (nconf_udp == NULL) 270 err(1, "getnetconfigent udp failed"); 271 272 nb_udp.buf = ai_udp->ai_addr; 273 nb_udp.len = nb_udp.maxlen = ai_udp->ai_addrlen; 274 if (reregister) 275 if (!rpcb_set(RPCPROG_NFS, 2, nconf_udp, &nb_udp)) 276 err(1, "rpcb_set udp failed"); 277 } 278 279 if (tcpflag) { 280 memset(&hints, 0, sizeof hints); 281 hints.ai_flags = AI_PASSIVE; 282 hints.ai_family = PF_INET; 283 hints.ai_socktype = SOCK_STREAM; 284 hints.ai_protocol = IPPROTO_TCP; 285 286 ecode = getaddrinfo(NULL, "nfs", &hints, &ai_tcp); 287 if (ecode != 0) { 288 syslog(LOG_ERR, "getaddrinfo udp: %s", 289 gai_strerror(ecode)); 290 exit(1); 291 } 292 293 nconf_tcp = getnetconfigent("tcp"); 294 295 if (nconf_tcp == NULL) 296 err(1, "getnetconfigent tcp failed"); 297 298 nb_tcp.buf = ai_tcp->ai_addr; 299 nb_tcp.len = nb_tcp.maxlen = ai_tcp->ai_addrlen; 300 if (reregister) 301 if (!rpcb_set(RPCPROG_NFS, 2, nconf_tcp, &nb_tcp)) 302 err(1, "rpcb_set tcp failed"); 303 } 304 305 if (udpflag && ip6flag) { 306 memset(&hints, 0, sizeof hints); 307 hints.ai_flags = AI_PASSIVE; 308 hints.ai_family = PF_INET6; 309 hints.ai_socktype = SOCK_DGRAM; 310 hints.ai_protocol = IPPROTO_UDP; 311 312 ecode = getaddrinfo(NULL, "nfs", &hints, &ai_udp6); 313 if (ecode != 0) { 314 syslog(LOG_ERR, "getaddrinfo udp: %s", 315 gai_strerror(ecode)); 316 exit(1); 317 } 318 319 nconf_udp6 = getnetconfigent("udp6"); 320 321 if (nconf_udp6 == NULL) 322 err(1, "getnetconfigent udp6 failed"); 323 324 nb_udp6.buf = ai_udp6->ai_addr; 325 nb_udp6.len = nb_udp6.maxlen = ai_udp6->ai_addrlen; 326 if (reregister) 327 if (!rpcb_set(RPCPROG_NFS, 2, nconf_udp6, &nb_udp6)) 328 err(1, "rpcb_set udp6 failed"); 329 } 330 331 if (tcpflag && ip6flag) { 332 memset(&hints, 0, sizeof hints); 333 hints.ai_flags = AI_PASSIVE; 334 hints.ai_family = PF_INET6; 335 hints.ai_socktype = SOCK_STREAM; 336 hints.ai_protocol = IPPROTO_TCP; 337 338 ecode = getaddrinfo(NULL, "nfs", &hints, &ai_tcp6); 339 if (ecode != 0) { 340 syslog(LOG_ERR, "getaddrinfo udp: %s", 341 gai_strerror(ecode)); 342 exit(1); 343 } 344 345 nconf_tcp6 = getnetconfigent("tcp6"); 346 347 if (nconf_tcp6 == NULL) 348 err(1, "getnetconfigent tcp6 failed"); 349 350 nb_tcp6.buf = ai_tcp6->ai_addr; 351 nb_tcp6.len = nb_tcp6.maxlen = ai_tcp6->ai_addrlen; 352 if (reregister) 353 if (!rpcb_set(RPCPROG_NFS, 2, nconf_tcp6, &nb_tcp6)) 354 err(1, "rpcb_set tcp6 failed"); 355 } 356 357 openlog("nfsd", LOG_PID, LOG_DAEMON); 358 359 for (i = 0; i < nfsdcnt; i++) { 360 switch (fork()) { 361 case -1: 362 syslog(LOG_ERR, "fork: %m"); 363 exit (1); 364 case 0: 365 break; 366 default: 367 continue; 368 } 369 370 setproctitle("server"); 371 nfssvc_flag = NFSSVC_NFSD; 372 nsd.nsd_nfsd = NULL; 373 #ifdef NFSKERB 374 if (sizeof (struct nfsrpc_fullverf) != RPCX_FULLVERF || 375 sizeof (struct nfsrpc_fullblock) != RPCX_FULLBLOCK) 376 syslog(LOG_ERR, "Yikes NFSKERB structs not packed!"); 377 nsd.nsd_authstr = (u_char *)&kt; 378 nsd.nsd_authlen = sizeof (kt); 379 nsd.nsd_verfstr = (u_char *)&kverf; 380 nsd.nsd_verflen = sizeof (kverf); 381 #endif 382 while (nfssvc(nfssvc_flag, &nsd) < 0) { 383 if (errno != ENEEDAUTH) { 384 syslog(LOG_ERR, "nfssvc: %m"); 385 exit(1); 386 } 387 nfssvc_flag = NFSSVC_NFSD | NFSSVC_AUTHINFAIL; 388 #ifdef NFSKERB 389 /* 390 * Get the Kerberos ticket out of the authenticator 391 * verify it and convert the principal name to a user 392 * name. The user name is then converted to a set of 393 * user credentials via the password and group file. 394 * Finally, decrypt the timestamp and validate it. 395 * For more info see the IETF Draft "Authentication 396 * in ONC RPC". 397 */ 398 kt.length = ntohl(kt.length); 399 if (gettimeofday(&ktv, (struct timezone *)0) == 0 && 400 kt.length > 0 && kt.length <= 401 (RPCAUTH_MAXSIZ - 3 * NFSX_UNSIGNED)) { 402 kin.w1 = NFS_KERBW1(kt); 403 kt.mbz = 0; 404 (void)strcpy(inst, "*"); 405 if (krb_rd_req(&kt, NFS_KERBSRV, 406 inst, nsd.nsd_haddr, &kauth, "") == 407 RD_AP_OK && 408 krb_kntoln(&kauth, lnam) == KSUCCESS && 409 (pwd = getpwnam(lnam)) != NULL) { 410 cr = &nsd.nsd_cr; 411 cr->cr_uid = pwd->pw_uid; 412 cr->cr_groups[0] = pwd->pw_gid; 413 cr->cr_ngroups = 1; 414 setgrent(); 415 while ((grp = getgrent()) != NULL) { 416 if (grp->gr_gid == 417 cr->cr_groups[0]) 418 continue; 419 for (cpp = grp->gr_mem; 420 *cpp != NULL; ++cpp) 421 if (!strcmp(*cpp, lnam)) 422 break; 423 if (*cpp == NULL) 424 continue; 425 cr->cr_groups[cr->cr_ngroups++] 426 = grp->gr_gid; 427 if (cr->cr_ngroups == NGROUPS) 428 break; 429 } 430 endgrent(); 431 432 /* 433 * Get the timestamp verifier out of 434 * the authenticator and verifier 435 * strings. 436 */ 437 kin.t1 = kverf.t1; 438 kin.t2 = kverf.t2; 439 kin.w2 = kverf.w2; 440 memset((caddr_t)kivec, 0, 441 sizeof(kivec)); 442 memmove((caddr_t)nsd.nsd_key, 443 (caddr_t)kauth.session, 444 sizeof(kauth.session)); 445 446 /* 447 * Decrypt the timestamp verifier 448 * in CBC mode. 449 */ 450 XXX 451 452 /* 453 * Validate the timestamp verifier, to 454 * check that the session key is ok. 455 */ 456 nsd.nsd_timestamp.tv_sec = 457 ntohl(kout.t1); 458 nsd.nsd_timestamp.tv_usec = 459 ntohl(kout.t2); 460 nsd.nsd_ttl = ntohl(kout.w1); 461 if ((nsd.nsd_ttl - 1) == ntohl(kout.w2)) 462 nfssvc_flag = 463 NFSSVC_NFSD | NFSSVC_AUTHIN; 464 } 465 } 466 #endif /* NFSKERB */ 467 } 468 exit(0); 469 } 470 471 /* If we are serving udp, set up the socket. */ 472 if (udpflag) { 473 if ((sock = socket(ai_udp->ai_family, ai_udp->ai_socktype, 474 ai_udp->ai_protocol)) < 0) { 475 syslog(LOG_ERR, "can't create udp socket"); 476 exit(1); 477 } 478 if (bind(sock, ai_udp->ai_addr, ai_udp->ai_addrlen) < 0) { 479 syslog(LOG_ERR, "can't bind udp addr"); 480 exit(1); 481 } 482 if (!rpcb_set(RPCPROG_NFS, 2, nconf_udp, &nb_udp) || 483 !rpcb_set(RPCPROG_NFS, 3, nconf_udp, &nb_udp)) { 484 syslog(LOG_ERR, "can't register with udp portmap"); 485 exit(1); 486 } 487 nfsdargs.sock = sock; 488 nfsdargs.name = NULL; 489 nfsdargs.namelen = 0; 490 if (nfssvc(NFSSVC_ADDSOCK, &nfsdargs) < 0) { 491 syslog(LOG_ERR, "can't add UDP socket"); 492 exit(1); 493 } 494 (void)close(sock); 495 } 496 497 if (udpflag &&ip6flag) { 498 if ((sock = socket(ai_udp6->ai_family, ai_udp6->ai_socktype, 499 ai_udp6->ai_protocol)) < 0) { 500 syslog(LOG_ERR, "can't create udp socket"); 501 exit(1); 502 } 503 if (setsockopt(sock, IPPROTO_IPV6, IPV6_V6ONLY, 504 &on, sizeof on) < 0) { 505 syslog(LOG_ERR, "can't set v6-only binding for udp6 " 506 "socket: %m"); 507 exit(1); 508 } 509 if (bind(sock, ai_udp6->ai_addr, ai_udp6->ai_addrlen) < 0) { 510 syslog(LOG_ERR, "can't bind udp addr"); 511 exit(1); 512 } 513 if (!rpcb_set(RPCPROG_NFS, 2, nconf_udp6, &nb_udp6) || 514 !rpcb_set(RPCPROG_NFS, 3, nconf_udp6, &nb_udp6)) { 515 syslog(LOG_ERR, "can't register with udp portmap"); 516 exit(1); 517 } 518 nfsdargs.sock = sock; 519 nfsdargs.name = NULL; 520 nfsdargs.namelen = 0; 521 if (nfssvc(NFSSVC_ADDSOCK, &nfsdargs) < 0) { 522 syslog(LOG_ERR, "can't add UDP6 socket"); 523 exit(1); 524 } 525 (void)close(sock); 526 } 527 528 #ifdef ISO 529 /* If we are serving cltp, set up the socket. */ 530 if (cltpflag) { 531 if ((sock = socket(AF_ISO, SOCK_DGRAM, 0)) < 0) { 532 syslog(LOG_ERR, "can't create cltp socket"); 533 exit(1); 534 } 535 memset(&isoaddr, 0, sizeof(isoaddr)); 536 isoaddr.siso_family = AF_ISO; 537 isoaddr.siso_tlen = 2; 538 cp = TSEL(&isoaddr); 539 *cp++ = (NFS_PORT >> 8); 540 *cp = (NFS_PORT & 0xff); 541 isoaddr.siso_len = sizeof(isoaddr); 542 if (bind(sock, 543 (struct sockaddr *)&isoaddr, sizeof(isoaddr)) < 0) { 544 syslog(LOG_ERR, "can't bind cltp addr"); 545 exit(1); 546 } 547 #ifdef notyet 548 /* 549 * XXX 550 * Someday this should probably use "rpcbind", the son of 551 * portmap. 552 */ 553 if (!pmap_set(RPCPROG_NFS, NFS_VER2, IPPROTO_UDP, NFS_PORT)) { 554 syslog(LOG_ERR, "can't register with udp portmap"); 555 exit(1); 556 } 557 #endif /* notyet */ 558 nfsdargs.sock = sock; 559 nfsdargs.name = NULL; 560 nfsdargs.namelen = 0; 561 if (nfssvc(NFSSVC_ADDSOCK, &nfsdargs) < 0) { 562 syslog(LOG_ERR, "can't add UDP socket"); 563 exit(1); 564 } 565 close(sock); 566 } 567 #endif /* ISO */ 568 569 /* Now set up the master server socket waiting for tcp connections. */ 570 on = 1; 571 connect_type_cnt = 0; 572 if (tcpflag) { 573 if ((tcpsock = socket(ai_tcp->ai_family, ai_tcp->ai_socktype, 574 ai_tcp->ai_protocol)) < 0) { 575 syslog(LOG_ERR, "can't create tcp socket"); 576 exit(1); 577 } 578 if (setsockopt(tcpsock, 579 SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0) 580 syslog(LOG_ERR, "setsockopt SO_REUSEADDR: %m"); 581 if (bind(tcpsock, ai_tcp->ai_addr, ai_tcp->ai_addrlen) < 0) { 582 syslog(LOG_ERR, "can't bind tcp addr"); 583 exit(1); 584 } 585 if (listen(tcpsock, 5) < 0) { 586 syslog(LOG_ERR, "listen failed"); 587 exit(1); 588 } 589 if (!rpcb_set(RPCPROG_NFS, 2, nconf_tcp, &nb_tcp) || 590 !rpcb_set(RPCPROG_NFS, 3, nconf_tcp, &nb_tcp)) { 591 syslog(LOG_ERR, "can't register tcp with rpcbind"); 592 exit(1); 593 } 594 set[0].fd = tcpsock; 595 set[0].events = POLLIN; 596 connect_type_cnt++; 597 } else 598 set[0].fd = -1; 599 600 if (tcpflag && ip6flag) { 601 if ((tcp6sock = socket(ai_tcp6->ai_family, ai_tcp6->ai_socktype, 602 ai_tcp6->ai_protocol)) < 0) { 603 syslog(LOG_ERR, "can't create tcp socket"); 604 exit(1); 605 } 606 if (setsockopt(tcp6sock, 607 SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0) 608 syslog(LOG_ERR, "setsockopt SO_REUSEADDR: %m"); 609 if (setsockopt(tcp6sock, IPPROTO_IPV6, IPV6_V6ONLY, 610 &on, sizeof on) < 0) { 611 syslog(LOG_ERR, "can't set v6-only binding for tcp6 " 612 "socket: %m"); 613 exit(1); 614 } 615 if (bind(tcp6sock, ai_tcp6->ai_addr, ai_tcp6->ai_addrlen) < 0) { 616 syslog(LOG_ERR, "can't bind tcp6 addr"); 617 exit(1); 618 } 619 if (listen(tcp6sock, 5) < 0) { 620 syslog(LOG_ERR, "listen failed"); 621 exit(1); 622 } 623 if (!rpcb_set(RPCPROG_NFS, 2, nconf_tcp6, &nb_tcp6) || 624 !rpcb_set(RPCPROG_NFS, 3, nconf_tcp6, &nb_tcp6)) { 625 syslog(LOG_ERR, "can't register tcp6 with rpcbind"); 626 exit(1); 627 } 628 set[1].fd = tcp6sock; 629 set[1].events = POLLIN; 630 connect_type_cnt++; 631 } else 632 set[1].fd = -1; 633 634 #ifdef notyet 635 /* Now set up the master server socket waiting for tp4 connections. */ 636 if (tp4flag) { 637 if ((tp4sock = socket(AF_ISO, SOCK_SEQPACKET, 0)) < 0) { 638 syslog(LOG_ERR, "can't create tp4 socket"); 639 exit(1); 640 } 641 if (setsockopt(tp4sock, 642 SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0) 643 syslog(LOG_ERR, "setsockopt SO_REUSEADDR: %m"); 644 memset(&isoaddr, 0, sizeof(isoaddr)); 645 isoaddr.siso_family = AF_ISO; 646 isoaddr.siso_tlen = 2; 647 cp = TSEL(&isoaddr); 648 *cp++ = (NFS_PORT >> 8); 649 *cp = (NFS_PORT & 0xff); 650 isoaddr.siso_len = sizeof(isoaddr); 651 if (bind(tp4sock, 652 (struct sockaddr *)&isoaddr, sizeof(isoaddr)) < 0) { 653 syslog(LOG_ERR, "can't bind tp4 addr"); 654 exit(1); 655 } 656 if (listen(tp4sock, 5) < 0) { 657 syslog(LOG_ERR, "listen failed"); 658 exit(1); 659 } 660 /* 661 * XXX 662 * Someday this should probably use "rpcbind", the son of 663 * portmap. 664 */ 665 if (!pmap_set(RPCPROG_NFS, NFS_VER2, IPPROTO_TCP, NFS_PORT)) { 666 syslog(LOG_ERR, "can't register tcp with portmap"); 667 exit(1); 668 } 669 set[2].fd = tp4sock; 670 set[2].events = POLLIN; 671 connect_type_cnt++; 672 } else 673 set[2].fd = -1; 674 675 /* Now set up the master server socket waiting for tpip connections. */ 676 if (tpipflag) { 677 if ((tpipsock = socket(AF_INET, SOCK_SEQPACKET, 0)) < 0) { 678 syslog(LOG_ERR, "can't create tpip socket"); 679 exit(1); 680 } 681 if (setsockopt(tpipsock, 682 SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0) 683 syslog(LOG_ERR, "setsockopt SO_REUSEADDR: %m"); 684 inetaddr.sin_family = AF_INET; 685 inetaddr.sin_addr.s_addr = INADDR_ANY; 686 inetaddr.sin_port = htons(NFS_PORT); 687 inetaddr.sin_len = sizeof(inetaddr); 688 memset(inetaddr.sin_zero, 0, sizeof(inetaddr.sin_zero)); 689 if (bind(tpipsock, 690 (struct sockaddr *)&inetaddr, sizeof (inetaddr)) < 0) { 691 syslog(LOG_ERR, "can't bind tcp addr"); 692 exit(1); 693 } 694 if (listen(tpipsock, 5) < 0) { 695 syslog(LOG_ERR, "listen failed"); 696 exit(1); 697 } 698 /* 699 * XXX 700 * Someday this should probably use "rpcbind", the son of 701 * portmap. 702 */ 703 if (!pmap_set(RPCPROG_NFS, NFS_VER2, IPPROTO_TCP, NFS_PORT)) { 704 syslog(LOG_ERR, "can't register tcp with portmap"); 705 exit(1); 706 } 707 set[3].fd = tpipsock; 708 set[3].events = POLLIN; 709 connect_type_cnt++; 710 } else 711 set[3].fd = -1; 712 #else 713 set[2].fd = -1; 714 set[3].fd = -1; 715 #endif /* notyet */ 716 717 if (connect_type_cnt == 0) 718 exit(0); 719 720 setproctitle("master"); 721 722 /* 723 * Loop forever accepting connections and passing the sockets 724 * into the kernel for the mounts. 725 */ 726 for (;;) { 727 if (poll(set, 4, INFTIM) < 1) { 728 syslog(LOG_ERR, "select failed: %m"); 729 exit(1); 730 } 731 732 if (set[0].revents & POLLIN) { 733 len = sizeof(inetpeer); 734 if ((msgsock = accept(tcpsock, 735 (struct sockaddr *)&inetpeer, &len)) < 0) { 736 syslog(LOG_ERR, "accept failed: %m"); 737 exit(1); 738 } 739 memset(inetpeer.sin_zero, 0, sizeof(inetpeer.sin_zero)); 740 if (setsockopt(msgsock, SOL_SOCKET, 741 SO_KEEPALIVE, (char *)&on, sizeof(on)) < 0) 742 syslog(LOG_ERR, 743 "setsockopt SO_KEEPALIVE: %m"); 744 nfsdargs.sock = msgsock; 745 nfsdargs.name = (caddr_t)&inetpeer; 746 nfsdargs.namelen = sizeof(inetpeer); 747 nfssvc(NFSSVC_ADDSOCK, &nfsdargs); 748 (void)close(msgsock); 749 } 750 751 if (set[1].revents & POLLIN) { 752 len = sizeof(inet6peer); 753 if ((msgsock = accept(tcp6sock, 754 (struct sockaddr *)&inet6peer, &len)) < 0) { 755 syslog(LOG_ERR, "accept failed: %m"); 756 exit(1); 757 } 758 if (setsockopt(msgsock, SOL_SOCKET, 759 SO_KEEPALIVE, (char *)&on, sizeof(on)) < 0) 760 syslog(LOG_ERR, 761 "setsockopt SO_KEEPALIVE: %m"); 762 nfsdargs.sock = msgsock; 763 nfsdargs.name = (caddr_t)&inet6peer; 764 nfsdargs.namelen = sizeof(inet6peer); 765 nfssvc(NFSSVC_ADDSOCK, &nfsdargs); 766 (void)close(msgsock); 767 } 768 769 #ifdef notyet 770 if (set[2].revents & POLLIN) { 771 len = sizeof(isopeer); 772 if ((msgsock = accept(tp4sock, 773 (struct sockaddr *)&isopeer, &len)) < 0) { 774 syslog(LOG_ERR, "accept failed: %m"); 775 exit(1); 776 } 777 if (setsockopt(msgsock, SOL_SOCKET, 778 SO_KEEPALIVE, (char *)&on, sizeof(on)) < 0) 779 syslog(LOG_ERR, 780 "setsockopt SO_KEEPALIVE: %m"); 781 nfsdargs.sock = msgsock; 782 nfsdargs.name = (caddr_t)&isopeer; 783 nfsdargs.namelen = len; 784 nfssvc(NFSSVC_ADDSOCK, &nfsdargs); 785 (void)close(msgsock); 786 } 787 788 if (set[3].revents & POLLIN) { 789 len = sizeof(inetpeer); 790 if ((msgsock = accept(tpipsock, 791 (struct sockaddr *)&inetpeer, &len)) < 0) { 792 syslog(LOG_ERR, "accept failed: %m"); 793 exit(1); 794 } 795 if (setsockopt(msgsock, SOL_SOCKET, 796 SO_KEEPALIVE, (char *)&on, sizeof(on)) < 0) 797 syslog(LOG_ERR, "setsockopt SO_KEEPALIVE: %m"); 798 nfsdargs.sock = msgsock; 799 nfsdargs.name = (caddr_t)&inetpeer; 800 nfsdargs.namelen = len; 801 nfssvc(NFSSVC_ADDSOCK, &nfsdargs); 802 (void)close(msgsock); 803 } 804 #endif /* notyet */ 805 } 806 } 807 808 void 809 usage() 810 { 811 812 (void)fprintf(stderr, "usage: nfsd %s\n", USAGE); 813 exit(1); 814 } 815 816 void 817 nonfs(signo) 818 int signo; 819 { 820 821 syslog(LOG_ERR, "missing system call: NFS not available."); 822 } 823 824 void 825 reapchild(signo) 826 int signo; 827 { 828 829 while (wait3(NULL, WNOHANG, NULL) > 0); 830 } 831
Indexes created Thu Sep 25 16:09:42 GMT 2025