nfsd.c revision 1.48
1 /* $NetBSD: nfsd.c,v 1.48 2006/08/25 11:59:30 hubertf 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 1.48 2006/08/25 11:59:30 hubertf 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 #include <err.h> 72 #include <errno.h> 73 #include <fcntl.h> 74 #include <grp.h> 75 #include <pwd.h> 76 #include <signal.h> 77 #include <stdio.h> 78 #include <stdlib.h> 79 #include <string.h> 80 #include <syslog.h> 81 #include <unistd.h> 82 #include <netdb.h> 83 84 /* Global defs */ 85 #ifdef DEBUG 86 #define syslog(e, s) fprintf(stderr,(s)) 87 int debug = 1; 88 #else 89 int debug = 0; 90 #endif 91 92 struct nfsd_srvargs nsd; 93 94 int main __P((int, char **)); 95 void nonfs __P((int)); 96 void reapchild __P((int)); 97 void usage __P((void)); 98 99 /* 100 * Nfs server daemon mostly just a user context for nfssvc() 101 * 102 * 1 - do file descriptor and signal cleanup 103 * 2 - fork the nfsd(s) 104 * 3 - create server socket(s) 105 * 4 - register socket with portmap 106 * 107 * For connectionless protocols, just pass the socket into the kernel via 108 * nfssvc(). 109 * For connection based sockets, loop doing accepts. When you get a new 110 * socket from accept, pass the msgsock into the kernel via nfssvc(). 111 * The arguments are: 112 * -c - support iso cltp clients 113 * -r - reregister with portmapper 114 * -t - support tcp nfs clients 115 * -u - support udp nfs clients 116 * followed by "n" which is the number of nfsds' to fork off 117 */ 118 int 119 main(argc, argv) 120 int argc; 121 char *argv[]; 122 { 123 struct nfsd_args nfsdargs; 124 struct addrinfo *ai_udp, *ai_tcp, *ai_udp6, *ai_tcp6, hints; 125 struct netconfig *nconf_udp, *nconf_tcp, *nconf_udp6, *nconf_tcp6; 126 struct netbuf nb_udp, nb_tcp, nb_udp6, nb_tcp6; 127 struct sockaddr_in inetpeer; 128 struct sockaddr_in6 inet6peer; 129 #ifdef ISO 130 struct sockaddr_iso isoaddr, isopeer; 131 #endif 132 struct pollfd set[4]; 133 socklen_t len; 134 int ch, cltpflag, connect_type_cnt, i, maxsock, msgsock; 135 int nfsdcnt, nfssvc_flag, on = 1, reregister, sock, tcpflag, tcpsock; 136 int tcp6sock, ip6flag; 137 int tp4cnt, tp4flag, tpipcnt, tpipflag, udpflag, ecode, s; 138 139 #define MAXNFSDCNT 1024 140 #define DEFNFSDCNT 4 141 nfsdcnt = DEFNFSDCNT; 142 cltpflag = reregister = tcpflag = tp4cnt = tp4flag = tpipcnt = 0; 143 tpipflag = udpflag = ip6flag = 0; 144 nconf_udp = nconf_tcp = nconf_udp6 = nconf_tcp6 = NULL; 145 maxsock = 0; 146 tcpsock = tcp6sock = -1; 147 #ifdef ISO 148 #define GETOPT "6cn:rtu" 149 #define USAGE "[-crtu] [-n num_servers]" 150 #else 151 #define GETOPT "6n:rtu" 152 #define USAGE "[-rtu] [-n num_servers]" 153 #endif 154 while ((ch = getopt(argc, argv, GETOPT)) != -1) { 155 switch (ch) { 156 case '6': 157 ip6flag = 1; 158 s = socket(PF_INET6, SOCK_DGRAM, IPPROTO_UDP); 159 if (s < 0 && (errno == EPROTONOSUPPORT || 160 errno == EPFNOSUPPORT || errno == EAFNOSUPPORT)) 161 ip6flag = 0; 162 else 163 close(s); 164 break; 165 case 'n': 166 nfsdcnt = atoi(optarg); 167 if (nfsdcnt < 1 || nfsdcnt > MAXNFSDCNT) { 168 warnx("nfsd count %d; reset to %d", nfsdcnt, DEFNFSDCNT); 169 nfsdcnt = DEFNFSDCNT; 170 } 171 break; 172 case 'r': 173 reregister = 1; 174 break; 175 case 't': 176 tcpflag = 1; 177 break; 178 case 'u': 179 udpflag = 1; 180 break; 181 #ifdef ISO 182 case 'c': 183 cltpflag = 1; 184 break; 185 #ifdef notyet 186 case 'i': 187 tp4cnt = 1; 188 break; 189 case 'p': 190 tpipcnt = 1; 191 break; 192 #endif /* notyet */ 193 #endif /* ISO */ 194 default: 195 case '?': 196 usage(); 197 }; 198 } 199 argv += optind; 200 argc -= optind; 201 202 /* 203 * XXX 204 * Backward compatibility, trailing number is the count of daemons. 205 */ 206 if (argc > 1) 207 usage(); 208 if (argc == 1) { 209 nfsdcnt = atoi(argv[0]); 210 if (nfsdcnt < 1 || nfsdcnt > MAXNFSDCNT) { 211 warnx("nfsd count %d; reset to %d", nfsdcnt, DEFNFSDCNT); 212 nfsdcnt = DEFNFSDCNT; 213 } 214 } 215 216 /* 217 * If none of TCP or UDP are specified, default to UDP only. 218 */ 219 if (tcpflag == 0 && udpflag == 0) 220 udpflag = 1; 221 222 if (debug == 0) { 223 daemon(0, 0); 224 (void)signal(SIGHUP, SIG_IGN); 225 (void)signal(SIGINT, SIG_IGN); 226 (void)signal(SIGQUIT, SIG_IGN); 227 (void)signal(SIGSYS, nonfs); 228 } 229 (void)signal(SIGCHLD, reapchild); 230 231 if (udpflag) { 232 memset(&hints, 0, sizeof hints); 233 hints.ai_flags = AI_PASSIVE; 234 hints.ai_family = PF_INET; 235 hints.ai_socktype = SOCK_DGRAM; 236 hints.ai_protocol = IPPROTO_UDP; 237 238 ecode = getaddrinfo(NULL, "nfs", &hints, &ai_udp); 239 if (ecode != 0) { 240 syslog(LOG_ERR, "getaddrinfo udp: %s", 241 gai_strerror(ecode)); 242 exit(1); 243 } 244 245 nconf_udp = getnetconfigent("udp"); 246 247 if (nconf_udp == NULL) 248 err(1, "getnetconfigent udp failed"); 249 250 nb_udp.buf = ai_udp->ai_addr; 251 nb_udp.len = nb_udp.maxlen = ai_udp->ai_addrlen; 252 if (reregister) 253 if (!rpcb_set(RPCPROG_NFS, 2, nconf_udp, &nb_udp)) 254 err(1, "rpcb_set udp failed"); 255 } 256 257 if (tcpflag) { 258 memset(&hints, 0, sizeof hints); 259 hints.ai_flags = AI_PASSIVE; 260 hints.ai_family = PF_INET; 261 hints.ai_socktype = SOCK_STREAM; 262 hints.ai_protocol = IPPROTO_TCP; 263 264 ecode = getaddrinfo(NULL, "nfs", &hints, &ai_tcp); 265 if (ecode != 0) { 266 syslog(LOG_ERR, "getaddrinfo tcp: %s", 267 gai_strerror(ecode)); 268 exit(1); 269 } 270 271 nconf_tcp = getnetconfigent("tcp"); 272 273 if (nconf_tcp == NULL) 274 err(1, "getnetconfigent tcp failed"); 275 276 nb_tcp.buf = ai_tcp->ai_addr; 277 nb_tcp.len = nb_tcp.maxlen = ai_tcp->ai_addrlen; 278 if (reregister) 279 if (!rpcb_set(RPCPROG_NFS, 2, nconf_tcp, &nb_tcp)) 280 err(1, "rpcb_set tcp failed"); 281 } 282 283 if (udpflag && ip6flag) { 284 memset(&hints, 0, sizeof hints); 285 hints.ai_flags = AI_PASSIVE; 286 hints.ai_family = PF_INET6; 287 hints.ai_socktype = SOCK_DGRAM; 288 hints.ai_protocol = IPPROTO_UDP; 289 290 ecode = getaddrinfo(NULL, "nfs", &hints, &ai_udp6); 291 if (ecode != 0) { 292 syslog(LOG_ERR, "getaddrinfo udp: %s", 293 gai_strerror(ecode)); 294 exit(1); 295 } 296 297 nconf_udp6 = getnetconfigent("udp6"); 298 299 if (nconf_udp6 == NULL) 300 err(1, "getnetconfigent udp6 failed"); 301 302 nb_udp6.buf = ai_udp6->ai_addr; 303 nb_udp6.len = nb_udp6.maxlen = ai_udp6->ai_addrlen; 304 if (reregister) 305 if (!rpcb_set(RPCPROG_NFS, 2, nconf_udp6, &nb_udp6)) 306 err(1, "rpcb_set udp6 failed"); 307 } 308 309 if (tcpflag && ip6flag) { 310 memset(&hints, 0, sizeof hints); 311 hints.ai_flags = AI_PASSIVE; 312 hints.ai_family = PF_INET6; 313 hints.ai_socktype = SOCK_STREAM; 314 hints.ai_protocol = IPPROTO_TCP; 315 316 ecode = getaddrinfo(NULL, "nfs", &hints, &ai_tcp6); 317 if (ecode != 0) { 318 syslog(LOG_ERR, "getaddrinfo tcp: %s", 319 gai_strerror(ecode)); 320 exit(1); 321 } 322 323 nconf_tcp6 = getnetconfigent("tcp6"); 324 325 if (nconf_tcp6 == NULL) 326 err(1, "getnetconfigent tcp6 failed"); 327 328 nb_tcp6.buf = ai_tcp6->ai_addr; 329 nb_tcp6.len = nb_tcp6.maxlen = ai_tcp6->ai_addrlen; 330 if (reregister) 331 if (!rpcb_set(RPCPROG_NFS, 2, nconf_tcp6, &nb_tcp6)) 332 err(1, "rpcb_set tcp6 failed"); 333 } 334 335 openlog("nfsd", LOG_PID, LOG_DAEMON); 336 337 for (i = 0; i < nfsdcnt; i++) { 338 switch (fork()) { 339 case -1: 340 syslog(LOG_ERR, "fork: %m"); 341 exit (1); 342 case 0: 343 break; 344 default: 345 continue; 346 } 347 348 setproctitle("server"); 349 nfssvc_flag = NFSSVC_NFSD; 350 nsd.nsd_nfsd = NULL; 351 while (nfssvc(nfssvc_flag, &nsd) < 0) { 352 if (errno != ENEEDAUTH) { 353 syslog(LOG_ERR, "nfssvc: %m"); 354 exit(1); 355 } 356 nfssvc_flag = NFSSVC_NFSD | NFSSVC_AUTHINFAIL; 357 } 358 exit(0); 359 } 360 361 /* If we are serving udp, set up the socket. */ 362 if (udpflag) { 363 if ((sock = socket(ai_udp->ai_family, ai_udp->ai_socktype, 364 ai_udp->ai_protocol)) < 0) { 365 syslog(LOG_ERR, "can't create udp socket"); 366 exit(1); 367 } 368 if (bind(sock, ai_udp->ai_addr, ai_udp->ai_addrlen) < 0) { 369 syslog(LOG_ERR, "can't bind udp addr"); 370 exit(1); 371 } 372 if (!rpcb_set(RPCPROG_NFS, 2, nconf_udp, &nb_udp) || 373 !rpcb_set(RPCPROG_NFS, 3, nconf_udp, &nb_udp)) { 374 syslog(LOG_ERR, "can't register with udp portmap"); 375 exit(1); 376 } 377 nfsdargs.sock = sock; 378 nfsdargs.name = NULL; 379 nfsdargs.namelen = 0; 380 if (nfssvc(NFSSVC_ADDSOCK, &nfsdargs) < 0) { 381 syslog(LOG_ERR, "can't add UDP socket"); 382 exit(1); 383 } 384 (void)close(sock); 385 } 386 387 if (udpflag &&ip6flag) { 388 if ((sock = socket(ai_udp6->ai_family, ai_udp6->ai_socktype, 389 ai_udp6->ai_protocol)) < 0) { 390 syslog(LOG_ERR, "can't create udp socket"); 391 exit(1); 392 } 393 if (setsockopt(sock, IPPROTO_IPV6, IPV6_V6ONLY, 394 &on, sizeof on) < 0) { 395 syslog(LOG_ERR, "can't set v6-only binding for udp6 " 396 "socket: %m"); 397 exit(1); 398 } 399 if (bind(sock, ai_udp6->ai_addr, ai_udp6->ai_addrlen) < 0) { 400 syslog(LOG_ERR, "can't bind udp addr"); 401 exit(1); 402 } 403 if (!rpcb_set(RPCPROG_NFS, 2, nconf_udp6, &nb_udp6) || 404 !rpcb_set(RPCPROG_NFS, 3, nconf_udp6, &nb_udp6)) { 405 syslog(LOG_ERR, "can't register with udp portmap"); 406 exit(1); 407 } 408 nfsdargs.sock = sock; 409 nfsdargs.name = NULL; 410 nfsdargs.namelen = 0; 411 if (nfssvc(NFSSVC_ADDSOCK, &nfsdargs) < 0) { 412 syslog(LOG_ERR, "can't add UDP6 socket"); 413 exit(1); 414 } 415 (void)close(sock); 416 } 417 418 #ifdef ISO 419 /* If we are serving cltp, set up the socket. */ 420 if (cltpflag) { 421 if ((sock = socket(AF_ISO, SOCK_DGRAM, 0)) < 0) { 422 syslog(LOG_ERR, "can't create cltp socket"); 423 exit(1); 424 } 425 memset(&isoaddr, 0, sizeof(isoaddr)); 426 isoaddr.siso_family = AF_ISO; 427 isoaddr.siso_tlen = 2; 428 cp = TSEL(&isoaddr); 429 *cp++ = (NFS_PORT >> 8); 430 *cp = (NFS_PORT & 0xff); 431 isoaddr.siso_len = sizeof(isoaddr); 432 if (bind(sock, 433 (struct sockaddr *)&isoaddr, sizeof(isoaddr)) < 0) { 434 syslog(LOG_ERR, "can't bind cltp addr"); 435 exit(1); 436 } 437 #ifdef notyet 438 /* 439 * XXX 440 * Someday this should probably use "rpcbind", the son of 441 * portmap. 442 */ 443 if (!pmap_set(RPCPROG_NFS, NFS_VER2, IPPROTO_UDP, NFS_PORT)) { 444 syslog(LOG_ERR, "can't register with udp portmap"); 445 exit(1); 446 } 447 #endif /* notyet */ 448 nfsdargs.sock = sock; 449 nfsdargs.name = NULL; 450 nfsdargs.namelen = 0; 451 if (nfssvc(NFSSVC_ADDSOCK, &nfsdargs) < 0) { 452 syslog(LOG_ERR, "can't add UDP socket"); 453 exit(1); 454 } 455 close(sock); 456 } 457 #endif /* ISO */ 458 459 /* Now set up the master server socket waiting for tcp connections. */ 460 on = 1; 461 connect_type_cnt = 0; 462 if (tcpflag) { 463 if ((tcpsock = socket(ai_tcp->ai_family, ai_tcp->ai_socktype, 464 ai_tcp->ai_protocol)) < 0) { 465 syslog(LOG_ERR, "can't create tcp socket"); 466 exit(1); 467 } 468 if (setsockopt(tcpsock, 469 SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0) 470 syslog(LOG_ERR, "setsockopt SO_REUSEADDR: %m"); 471 if (bind(tcpsock, ai_tcp->ai_addr, ai_tcp->ai_addrlen) < 0) { 472 syslog(LOG_ERR, "can't bind tcp addr"); 473 exit(1); 474 } 475 if (listen(tcpsock, 5) < 0) { 476 syslog(LOG_ERR, "listen failed"); 477 exit(1); 478 } 479 if (!rpcb_set(RPCPROG_NFS, 2, nconf_tcp, &nb_tcp) || 480 !rpcb_set(RPCPROG_NFS, 3, nconf_tcp, &nb_tcp)) { 481 syslog(LOG_ERR, "can't register tcp with rpcbind"); 482 exit(1); 483 } 484 set[0].fd = tcpsock; 485 set[0].events = POLLIN; 486 connect_type_cnt++; 487 } else 488 set[0].fd = -1; 489 490 if (tcpflag && ip6flag) { 491 if ((tcp6sock = socket(ai_tcp6->ai_family, ai_tcp6->ai_socktype, 492 ai_tcp6->ai_protocol)) < 0) { 493 syslog(LOG_ERR, "can't create tcp socket"); 494 exit(1); 495 } 496 if (setsockopt(tcp6sock, 497 SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0) 498 syslog(LOG_ERR, "setsockopt SO_REUSEADDR: %m"); 499 if (setsockopt(tcp6sock, IPPROTO_IPV6, IPV6_V6ONLY, 500 &on, sizeof on) < 0) { 501 syslog(LOG_ERR, "can't set v6-only binding for tcp6 " 502 "socket: %m"); 503 exit(1); 504 } 505 if (bind(tcp6sock, ai_tcp6->ai_addr, ai_tcp6->ai_addrlen) < 0) { 506 syslog(LOG_ERR, "can't bind tcp6 addr"); 507 exit(1); 508 } 509 if (listen(tcp6sock, 5) < 0) { 510 syslog(LOG_ERR, "listen failed"); 511 exit(1); 512 } 513 if (!rpcb_set(RPCPROG_NFS, 2, nconf_tcp6, &nb_tcp6) || 514 !rpcb_set(RPCPROG_NFS, 3, nconf_tcp6, &nb_tcp6)) { 515 syslog(LOG_ERR, "can't register tcp6 with rpcbind"); 516 exit(1); 517 } 518 set[1].fd = tcp6sock; 519 set[1].events = POLLIN; 520 connect_type_cnt++; 521 } else 522 set[1].fd = -1; 523 524 #ifdef notyet 525 /* Now set up the master server socket waiting for tp4 connections. */ 526 if (tp4flag) { 527 if ((tp4sock = socket(AF_ISO, SOCK_SEQPACKET, 0)) < 0) { 528 syslog(LOG_ERR, "can't create tp4 socket"); 529 exit(1); 530 } 531 if (setsockopt(tp4sock, 532 SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0) 533 syslog(LOG_ERR, "setsockopt SO_REUSEADDR: %m"); 534 memset(&isoaddr, 0, sizeof(isoaddr)); 535 isoaddr.siso_family = AF_ISO; 536 isoaddr.siso_tlen = 2; 537 cp = TSEL(&isoaddr); 538 *cp++ = (NFS_PORT >> 8); 539 *cp = (NFS_PORT & 0xff); 540 isoaddr.siso_len = sizeof(isoaddr); 541 if (bind(tp4sock, 542 (struct sockaddr *)&isoaddr, sizeof(isoaddr)) < 0) { 543 syslog(LOG_ERR, "can't bind tp4 addr"); 544 exit(1); 545 } 546 if (listen(tp4sock, 5) < 0) { 547 syslog(LOG_ERR, "listen failed"); 548 exit(1); 549 } 550 /* 551 * XXX 552 * Someday this should probably use "rpcbind", the son of 553 * portmap. 554 */ 555 if (!pmap_set(RPCPROG_NFS, NFS_VER2, IPPROTO_TCP, NFS_PORT)) { 556 syslog(LOG_ERR, "can't register tcp with portmap"); 557 exit(1); 558 } 559 set[2].fd = tp4sock; 560 set[2].events = POLLIN; 561 connect_type_cnt++; 562 } else 563 set[2].fd = -1; 564 565 /* Now set up the master server socket waiting for tpip connections. */ 566 if (tpipflag) { 567 if ((tpipsock = socket(AF_INET, SOCK_SEQPACKET, 0)) < 0) { 568 syslog(LOG_ERR, "can't create tpip socket"); 569 exit(1); 570 } 571 if (setsockopt(tpipsock, 572 SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0) 573 syslog(LOG_ERR, "setsockopt SO_REUSEADDR: %m"); 574 inetaddr.sin_family = AF_INET; 575 inetaddr.sin_addr.s_addr = INADDR_ANY; 576 inetaddr.sin_port = htons(NFS_PORT); 577 inetaddr.sin_len = sizeof(inetaddr); 578 memset(inetaddr.sin_zero, 0, sizeof(inetaddr.sin_zero)); 579 if (bind(tpipsock, 580 (struct sockaddr *)&inetaddr, sizeof (inetaddr)) < 0) { 581 syslog(LOG_ERR, "can't bind tcp addr"); 582 exit(1); 583 } 584 if (listen(tpipsock, 5) < 0) { 585 syslog(LOG_ERR, "listen failed"); 586 exit(1); 587 } 588 /* 589 * XXX 590 * Someday this should probably use "rpcbind", the son of 591 * portmap. 592 */ 593 if (!pmap_set(RPCPROG_NFS, NFS_VER2, IPPROTO_TCP, NFS_PORT)) { 594 syslog(LOG_ERR, "can't register tcp with portmap"); 595 exit(1); 596 } 597 set[3].fd = tpipsock; 598 set[3].events = POLLIN; 599 connect_type_cnt++; 600 } else 601 set[3].fd = -1; 602 #else 603 set[2].fd = -1; 604 set[3].fd = -1; 605 #endif /* notyet */ 606 607 if (connect_type_cnt == 0) 608 exit(0); 609 610 setproctitle("master"); 611 612 /* 613 * Loop forever accepting connections and passing the sockets 614 * into the kernel for the mounts. 615 */ 616 for (;;) { 617 if (poll(set, 4, INFTIM) < 1) { 618 syslog(LOG_ERR, "select failed: %m"); 619 exit(1); 620 } 621 622 if (set[0].revents & POLLIN) { 623 len = sizeof(inetpeer); 624 if ((msgsock = accept(tcpsock, 625 (struct sockaddr *)&inetpeer, &len)) < 0) { 626 syslog(LOG_ERR, "accept failed: %m"); 627 exit(1); 628 } 629 memset(inetpeer.sin_zero, 0, sizeof(inetpeer.sin_zero)); 630 if (setsockopt(msgsock, SOL_SOCKET, 631 SO_KEEPALIVE, (char *)&on, sizeof(on)) < 0) 632 syslog(LOG_ERR, 633 "setsockopt SO_KEEPALIVE: %m"); 634 nfsdargs.sock = msgsock; 635 nfsdargs.name = (caddr_t)&inetpeer; 636 nfsdargs.namelen = sizeof(inetpeer); 637 nfssvc(NFSSVC_ADDSOCK, &nfsdargs); 638 (void)close(msgsock); 639 } 640 641 if (set[1].revents & POLLIN) { 642 len = sizeof(inet6peer); 643 if ((msgsock = accept(tcp6sock, 644 (struct sockaddr *)&inet6peer, &len)) < 0) { 645 syslog(LOG_ERR, "accept failed: %m"); 646 exit(1); 647 } 648 if (setsockopt(msgsock, SOL_SOCKET, 649 SO_KEEPALIVE, (char *)&on, sizeof(on)) < 0) 650 syslog(LOG_ERR, 651 "setsockopt SO_KEEPALIVE: %m"); 652 nfsdargs.sock = msgsock; 653 nfsdargs.name = (caddr_t)&inet6peer; 654 nfsdargs.namelen = sizeof(inet6peer); 655 nfssvc(NFSSVC_ADDSOCK, &nfsdargs); 656 (void)close(msgsock); 657 } 658 659 #ifdef notyet 660 if (set[2].revents & POLLIN) { 661 len = sizeof(isopeer); 662 if ((msgsock = accept(tp4sock, 663 (struct sockaddr *)&isopeer, &len)) < 0) { 664 syslog(LOG_ERR, "accept failed: %m"); 665 exit(1); 666 } 667 if (setsockopt(msgsock, SOL_SOCKET, 668 SO_KEEPALIVE, (char *)&on, sizeof(on)) < 0) 669 syslog(LOG_ERR, 670 "setsockopt SO_KEEPALIVE: %m"); 671 nfsdargs.sock = msgsock; 672 nfsdargs.name = (caddr_t)&isopeer; 673 nfsdargs.namelen = len; 674 nfssvc(NFSSVC_ADDSOCK, &nfsdargs); 675 (void)close(msgsock); 676 } 677 678 if (set[3].revents & POLLIN) { 679 len = sizeof(inetpeer); 680 if ((msgsock = accept(tpipsock, 681 (struct sockaddr *)&inetpeer, &len)) < 0) { 682 syslog(LOG_ERR, "accept failed: %m"); 683 exit(1); 684 } 685 if (setsockopt(msgsock, SOL_SOCKET, 686 SO_KEEPALIVE, (char *)&on, sizeof(on)) < 0) 687 syslog(LOG_ERR, "setsockopt SO_KEEPALIVE: %m"); 688 nfsdargs.sock = msgsock; 689 nfsdargs.name = (caddr_t)&inetpeer; 690 nfsdargs.namelen = len; 691 nfssvc(NFSSVC_ADDSOCK, &nfsdargs); 692 (void)close(msgsock); 693 } 694 #endif /* notyet */ 695 } 696 } 697 698 void 699 usage() 700 { 701 (void)fprintf(stderr, "usage: nfsd %s\n", USAGE); 702 exit(1); 703 } 704 705 void 706 nonfs(signo) 707 int signo; 708 { 709 syslog(LOG_ERR, "missing system call: NFS not available."); 710 } 711 712 void 713 reapchild(signo) 714 int signo; 715 { 716 while (wait3(NULL, WNOHANG, NULL) > 0); 717 } 718
Indexes created Tue Sep 23 07:09:52 GMT 2025