nfsd.c revision 1.35
1 /* $NetBSD: nfsd.c,v 1.35 2001/01/16 02:50:32 cgd 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. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 #ifndef lint 41 __COPYRIGHT("@(#) Copyright (c) 1989, 1993, 1994\n\ 42 The Regents of the University of California. All rights reserved.\n"); 43 #endif /* not lint */ 44 45 #ifndef lint 46 #if 0 47 static char sccsid[] = "@(#)nfsd.c 8.9 (Berkeley) 3/29/95"; 48 #else 49 __RCSID("$NetBSD: nfsd.c,v 1.35 2001/01/16 02:50:32 cgd Exp $"); 50 #endif 51 #endif /* not lint */ 52 53 #include <sys/param.h> 54 #include <sys/ioctl.h> 55 #include <sys/stat.h> 56 #include <sys/wait.h> 57 #include <sys/uio.h> 58 #include <sys/ucred.h> 59 #include <sys/mount.h> 60 #include <sys/socket.h> 61 #include <sys/socketvar.h> 62 63 #include <rpc/rpc.h> 64 #include <rpc/pmap_clnt.h> 65 #include <rpc/pmap_prot.h> 66 67 #ifdef ISO 68 #include <netiso/iso.h> 69 #endif 70 #include <nfs/rpcv2.h> 71 #include <nfs/nfsproto.h> 72 #include <nfs/nfs.h> 73 74 #ifdef NFSKERB 75 #include <kerberosIV/des.h> 76 #include <kerberosIV/krb.h> 77 #endif 78 79 #include <err.h> 80 #include <errno.h> 81 #include <fcntl.h> 82 #include <grp.h> 83 #include <pwd.h> 84 #include <signal.h> 85 #include <stdio.h> 86 #include <stdlib.h> 87 #include <string.h> 88 #include <syslog.h> 89 #include <unistd.h> 90 #include <netdb.h> 91 92 /* Global defs */ 93 #ifdef DEBUG 94 #define syslog(e, s) fprintf(stderr,(s)) 95 int debug = 1; 96 #else 97 int debug = 0; 98 #endif 99 100 struct nfsd_srvargs nsd; 101 102 #ifdef NFSKERB 103 char lnam[ANAME_SZ]; 104 KTEXT_ST kt; 105 AUTH_DAT kauth; 106 char inst[INST_SZ]; 107 struct nfsrpc_fullblock kin, kout; 108 struct nfsrpc_fullverf kverf; 109 NFSKERBKEY_T kivec; 110 struct timeval ktv; 111 NFSKERBKEYSCHED_T kerb_keysched; 112 #endif 113 114 int main __P((int, char **)); 115 void nonfs __P((int)); 116 void reapchild __P((int)); 117 void usage __P((void)); 118 119 /* 120 * Nfs server daemon mostly just a user context for nfssvc() 121 * 122 * 1 - do file descriptor and signal cleanup 123 * 2 - fork the nfsd(s) 124 * 3 - create server socket(s) 125 * 4 - register socket with portmap 126 * 127 * For connectionless protocols, just pass the socket into the kernel via 128 * nfssvc(). 129 * For connection based sockets, loop doing accepts. When you get a new 130 * socket from accept, pass the msgsock into the kernel via nfssvc(). 131 * The arguments are: 132 * -c - support iso cltp clients 133 * -r - reregister with portmapper 134 * -t - support tcp nfs clients 135 * -u - support udp nfs clients 136 * followed by "n" which is the number of nfsds' to fork off 137 */ 138 int 139 main(argc, argv) 140 int argc; 141 char *argv[]; 142 { 143 struct nfsd_args nfsdargs; 144 struct addrinfo *ai_udp, *ai_tcp, *ai_udp6, *ai_tcp6, hints; 145 struct netconfig *nconf_udp, *nconf_tcp, *nconf_udp6, *nconf_tcp6; 146 struct netbuf nb_udp, nb_tcp, nb_udp6, nb_tcp6; 147 struct sockaddr_in inetpeer; 148 struct sockaddr_in6 inet6peer; 149 #ifdef ISO 150 struct sockaddr_iso isoaddr, isopeer; 151 #endif 152 fd_set ready, sockbits; 153 int ch, cltpflag, connect_type_cnt, i, len, maxsock, msgsock; 154 int nfsdcnt, nfssvc_flag, on = 1, reregister, sock, tcpflag, tcpsock; 155 int tcp6sock, ip6flag; 156 int tp4cnt, tp4flag, tpipcnt, tpipflag, udpflag, ecode, s; 157 #ifdef NFSKERB 158 struct group *grp; 159 struct passwd *pwd; 160 struct ucred *cr; 161 struct timeval ktv; 162 int tp4sock, tpipsock; 163 char *cp, **cpp; 164 #endif 165 166 #define MAXNFSDCNT 20 167 #define DEFNFSDCNT 4 168 nfsdcnt = DEFNFSDCNT; 169 cltpflag = reregister = tcpflag = tp4cnt = tp4flag = tpipcnt = 0; 170 tpipflag = udpflag = ip6flag = 0; 171 maxsock = tcpsock = 0; 172 #ifdef ISO 173 #define GETOPT "6cn:rtu" 174 #define USAGE "[-crtu] [-n num_servers]" 175 #else 176 #define GETOPT "6n:rtu" 177 #define USAGE "[-rtu] [-n num_servers]" 178 #endif 179 while ((ch = getopt(argc, argv, GETOPT)) != -1) { 180 switch (ch) { 181 case '6': 182 ip6flag = 1; 183 s = socket(PF_INET6, SOCK_DGRAM, IPPROTO_UDP); 184 if (s < 0 && (errno == EPROTONOSUPPORT || 185 errno == EPFNOSUPPORT || errno == EAFNOSUPPORT)) 186 ip6flag = 0; 187 else 188 close(s); 189 break; 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 } 224 argv += optind; 225 argc -= optind; 226 227 /* 228 * XXX 229 * Backward compatibility, trailing number is the count of daemons. 230 */ 231 if (argc > 1) 232 usage(); 233 if (argc == 1) { 234 nfsdcnt = atoi(argv[0]); 235 if (nfsdcnt < 1 || nfsdcnt > MAXNFSDCNT) { 236 warnx("nfsd count %d; reset to %d", nfsdcnt, DEFNFSDCNT); 237 nfsdcnt = DEFNFSDCNT; 238 } 239 } 240 241 /* 242 * If none of TCP or UDP are specified, default to UDP only. 243 */ 244 if (tcpflag == 0 && udpflag == 0) 245 udpflag = 1; 246 247 if (debug == 0) { 248 daemon(0, 0); 249 (void)signal(SIGHUP, SIG_IGN); 250 (void)signal(SIGINT, SIG_IGN); 251 (void)signal(SIGQUIT, SIG_IGN); 252 (void)signal(SIGSYS, nonfs); 253 } 254 (void)signal(SIGCHLD, reapchild); 255 256 if (udpflag) { 257 memset(&hints, 0, sizeof hints); 258 hints.ai_flags = AI_PASSIVE; 259 hints.ai_family = PF_INET; 260 hints.ai_socktype = SOCK_DGRAM; 261 hints.ai_protocol = IPPROTO_UDP; 262 263 ecode = getaddrinfo(NULL, "nfs", &hints, &ai_udp); 264 if (ecode != 0) { 265 syslog(LOG_ERR, "getaddrinfo udp: %s", 266 gai_strerror(ecode)); 267 exit(1); 268 } 269 270 nconf_udp = getnetconfigent("udp"); 271 272 if (nconf_udp == NULL) 273 err(1, "getnetconfigent udp failed"); 274 275 nb_udp.buf = ai_udp->ai_addr; 276 nb_udp.len = nb_udp.maxlen = ai_udp->ai_addrlen; 277 if (reregister) 278 if (!rpcb_set(RPCPROG_NFS, 2, nconf_udp, &nb_udp)) 279 err(1, "rpcb_set udp failed"); 280 } 281 282 if (tcpflag) { 283 memset(&hints, 0, sizeof hints); 284 hints.ai_flags = AI_PASSIVE; 285 hints.ai_family = PF_INET; 286 hints.ai_socktype = SOCK_STREAM; 287 hints.ai_protocol = IPPROTO_TCP; 288 289 ecode = getaddrinfo(NULL, "nfs", &hints, &ai_tcp); 290 if (ecode != 0) { 291 syslog(LOG_ERR, "getaddrinfo udp: %s", 292 gai_strerror(ecode)); 293 exit(1); 294 } 295 296 nconf_tcp = getnetconfigent("tcp"); 297 298 if (nconf_tcp == NULL) 299 err(1, "getnetconfigent tcp failed"); 300 301 nb_tcp.buf = ai_tcp->ai_addr; 302 nb_tcp.len = nb_tcp.maxlen = ai_tcp->ai_addrlen; 303 if (reregister) 304 if (!rpcb_set(RPCPROG_NFS, 2, nconf_tcp, &nb_tcp)) 305 err(1, "rpcb_set tcp failed"); 306 } 307 308 if (udpflag && ip6flag) { 309 memset(&hints, 0, sizeof hints); 310 hints.ai_flags = AI_PASSIVE; 311 hints.ai_family = PF_INET6; 312 hints.ai_socktype = SOCK_DGRAM; 313 hints.ai_protocol = IPPROTO_UDP; 314 315 ecode = getaddrinfo(NULL, "nfs", &hints, &ai_udp6); 316 if (ecode != 0) { 317 syslog(LOG_ERR, "getaddrinfo udp: %s", 318 gai_strerror(ecode)); 319 exit(1); 320 } 321 322 nconf_udp6 = getnetconfigent("udp6"); 323 324 if (nconf_udp6 == NULL) 325 err(1, "getnetconfigent udp6 failed"); 326 327 nb_udp6.buf = ai_udp6->ai_addr; 328 nb_udp6.len = nb_udp6.maxlen = ai_udp6->ai_addrlen; 329 if (reregister) 330 if (!rpcb_set(RPCPROG_NFS, 2, nconf_udp6, &nb_udp6)) 331 err(1, "rpcb_set udp6 failed"); 332 } 333 334 if (tcpflag && ip6flag) { 335 memset(&hints, 0, sizeof hints); 336 hints.ai_flags = AI_PASSIVE; 337 hints.ai_family = PF_INET6; 338 hints.ai_socktype = SOCK_STREAM; 339 hints.ai_protocol = IPPROTO_TCP; 340 341 ecode = getaddrinfo(NULL, "nfs", &hints, &ai_tcp6); 342 if (ecode != 0) { 343 syslog(LOG_ERR, "getaddrinfo udp: %s", 344 gai_strerror(ecode)); 345 exit(1); 346 } 347 348 nconf_tcp6 = getnetconfigent("tcp6"); 349 350 if (nconf_tcp6 == NULL) 351 err(1, "getnetconfigent tcp6 failed"); 352 353 nb_tcp6.buf = ai_tcp6->ai_addr; 354 nb_tcp6.len = nb_tcp6.maxlen = ai_tcp6->ai_addrlen; 355 if (reregister) 356 if (!rpcb_set(RPCPROG_NFS, 2, nconf_tcp6, &nb_tcp6)) 357 err(1, "rpcb_set tcp6 failed"); 358 } 359 360 openlog("nfsd", LOG_PID, LOG_DAEMON); 361 362 for (i = 0; i < nfsdcnt; i++) { 363 switch (fork()) { 364 case -1: 365 syslog(LOG_ERR, "fork: %m"); 366 exit (1); 367 case 0: 368 break; 369 default: 370 continue; 371 } 372 373 setproctitle("server"); 374 nfssvc_flag = NFSSVC_NFSD; 375 nsd.nsd_nfsd = NULL; 376 #ifdef NFSKERB 377 if (sizeof (struct nfsrpc_fullverf) != RPCX_FULLVERF || 378 sizeof (struct nfsrpc_fullblock) != RPCX_FULLBLOCK) 379 syslog(LOG_ERR, "Yikes NFSKERB structs not packed!"); 380 nsd.nsd_authstr = (u_char *)&kt; 381 nsd.nsd_authlen = sizeof (kt); 382 nsd.nsd_verfstr = (u_char *)&kverf; 383 nsd.nsd_verflen = sizeof (kverf); 384 #endif 385 while (nfssvc(nfssvc_flag, &nsd) < 0) { 386 if (errno != ENEEDAUTH) { 387 syslog(LOG_ERR, "nfssvc: %m"); 388 exit(1); 389 } 390 nfssvc_flag = NFSSVC_NFSD | NFSSVC_AUTHINFAIL; 391 #ifdef NFSKERB 392 /* 393 * Get the Kerberos ticket out of the authenticator 394 * verify it and convert the principal name to a user 395 * name. The user name is then converted to a set of 396 * user credentials via the password and group file. 397 * Finally, decrypt the timestamp and validate it. 398 * For more info see the IETF Draft "Authentication 399 * in ONC RPC". 400 */ 401 kt.length = ntohl(kt.length); 402 if (gettimeofday(&ktv, (struct timezone *)0) == 0 && 403 kt.length > 0 && kt.length <= 404 (RPCAUTH_MAXSIZ - 3 * NFSX_UNSIGNED)) { 405 kin.w1 = NFS_KERBW1(kt); 406 kt.mbz = 0; 407 (void)strcpy(inst, "*"); 408 if (krb_rd_req(&kt, NFS_KERBSRV, 409 inst, nsd.nsd_haddr, &kauth, "") == 410 RD_AP_OK && 411 krb_kntoln(&kauth, lnam) == KSUCCESS && 412 (pwd = getpwnam(lnam)) != NULL) { 413 cr = &nsd.nsd_cr; 414 cr->cr_uid = pwd->pw_uid; 415 cr->cr_groups[0] = pwd->pw_gid; 416 cr->cr_ngroups = 1; 417 setgrent(); 418 while ((grp = getgrent()) != NULL) { 419 if (grp->gr_gid == 420 cr->cr_groups[0]) 421 continue; 422 for (cpp = grp->gr_mem; 423 *cpp != NULL; ++cpp) 424 if (!strcmp(*cpp, lnam)) 425 break; 426 if (*cpp == NULL) 427 continue; 428 cr->cr_groups[cr->cr_ngroups++] 429 = grp->gr_gid; 430 if (cr->cr_ngroups == NGROUPS) 431 break; 432 } 433 endgrent(); 434 435 /* 436 * Get the timestamp verifier out of 437 * the authenticator and verifier 438 * strings. 439 */ 440 kin.t1 = kverf.t1; 441 kin.t2 = kverf.t2; 442 kin.w2 = kverf.w2; 443 memset((caddr_t)kivec, 0, 444 sizeof(kivec)); 445 memmove((caddr_t)nsd.nsd_key, 446 (caddr_t)kauth.session, 447 sizeof(kauth.session)); 448 449 /* 450 * Decrypt the timestamp verifier 451 * in CBC mode. 452 */ 453 XXX 454 455 /* 456 * Validate the timestamp verifier, to 457 * check that the session key is ok. 458 */ 459 nsd.nsd_timestamp.tv_sec = 460 ntohl(kout.t1); 461 nsd.nsd_timestamp.tv_usec = 462 ntohl(kout.t2); 463 nsd.nsd_ttl = ntohl(kout.w1); 464 if ((nsd.nsd_ttl - 1) == ntohl(kout.w2)) 465 nfssvc_flag = 466 NFSSVC_NFSD | NFSSVC_AUTHIN; 467 } 468 } 469 #endif /* NFSKERB */ 470 } 471 exit(0); 472 } 473 474 /* If we are serving udp, set up the socket. */ 475 if (udpflag) { 476 if ((sock = socket(ai_udp->ai_family, ai_udp->ai_socktype, 477 ai_udp->ai_protocol)) < 0) { 478 syslog(LOG_ERR, "can't create udp socket"); 479 exit(1); 480 } 481 if (bind(sock, ai_udp->ai_addr, ai_udp->ai_addrlen) < 0) { 482 syslog(LOG_ERR, "can't bind udp addr"); 483 exit(1); 484 } 485 if (!rpcb_set(RPCPROG_NFS, 2, nconf_udp, &nb_udp) || 486 !rpcb_set(RPCPROG_NFS, 3, nconf_udp, &nb_udp)) { 487 syslog(LOG_ERR, "can't register with udp portmap"); 488 exit(1); 489 } 490 nfsdargs.sock = sock; 491 nfsdargs.name = NULL; 492 nfsdargs.namelen = 0; 493 if (nfssvc(NFSSVC_ADDSOCK, &nfsdargs) < 0) { 494 syslog(LOG_ERR, "can't add UDP socket"); 495 exit(1); 496 } 497 (void)close(sock); 498 } 499 500 if (udpflag &&ip6flag) { 501 if ((sock = socket(ai_udp6->ai_family, ai_udp6->ai_socktype, 502 ai_udp6->ai_protocol)) < 0) { 503 syslog(LOG_ERR, "can't create udp socket"); 504 exit(1); 505 } 506 if (setsockopt(sock, IPPROTO_IPV6, IPV6_BINDV6ONLY, 507 &on, sizeof on) < 0) { 508 syslog(LOG_ERR, "can't set v6-only binding for udp6 " 509 "socket: %m"); 510 exit(1); 511 } 512 if (bind(sock, ai_udp6->ai_addr, ai_udp6->ai_addrlen) < 0) { 513 syslog(LOG_ERR, "can't bind udp addr"); 514 exit(1); 515 } 516 if (!rpcb_set(RPCPROG_NFS, 2, nconf_udp6, &nb_udp6) || 517 !rpcb_set(RPCPROG_NFS, 3, nconf_udp6, &nb_udp6)) { 518 syslog(LOG_ERR, "can't register with udp portmap"); 519 exit(1); 520 } 521 nfsdargs.sock = sock; 522 nfsdargs.name = NULL; 523 nfsdargs.namelen = 0; 524 if (nfssvc(NFSSVC_ADDSOCK, &nfsdargs) < 0) { 525 syslog(LOG_ERR, "can't add UDP6 socket"); 526 exit(1); 527 } 528 (void)close(sock); 529 } 530 531 #ifdef ISO 532 /* If we are serving cltp, set up the socket. */ 533 if (cltpflag) { 534 if ((sock = socket(AF_ISO, SOCK_DGRAM, 0)) < 0) { 535 syslog(LOG_ERR, "can't create cltp socket"); 536 exit(1); 537 } 538 memset(&isoaddr, 0, sizeof(isoaddr)); 539 isoaddr.siso_family = AF_ISO; 540 isoaddr.siso_tlen = 2; 541 cp = TSEL(&isoaddr); 542 *cp++ = (NFS_PORT >> 8); 543 *cp = (NFS_PORT & 0xff); 544 isoaddr.siso_len = sizeof(isoaddr); 545 if (bind(sock, 546 (struct sockaddr *)&isoaddr, sizeof(isoaddr)) < 0) { 547 syslog(LOG_ERR, "can't bind cltp addr"); 548 exit(1); 549 } 550 #ifdef notyet 551 /* 552 * XXX 553 * Someday this should probably use "rpcbind", the son of 554 * portmap. 555 */ 556 if (!pmap_set(RPCPROG_NFS, NFS_VER2, IPPROTO_UDP, NFS_PORT)) { 557 syslog(LOG_ERR, "can't register with udp portmap"); 558 exit(1); 559 } 560 #endif /* notyet */ 561 nfsdargs.sock = sock; 562 nfsdargs.name = NULL; 563 nfsdargs.namelen = 0; 564 if (nfssvc(NFSSVC_ADDSOCK, &nfsdargs) < 0) { 565 syslog(LOG_ERR, "can't add UDP socket"); 566 exit(1); 567 } 568 close(sock); 569 } 570 #endif /* ISO */ 571 572 /* Now set up the master server socket waiting for tcp connections. */ 573 on = 1; 574 FD_ZERO(&sockbits); 575 connect_type_cnt = 0; 576 if (tcpflag) { 577 if ((tcpsock = socket(ai_tcp->ai_family, ai_tcp->ai_socktype, 578 ai_tcp->ai_protocol)) < 0) { 579 syslog(LOG_ERR, "can't create tcp socket"); 580 exit(1); 581 } 582 if (setsockopt(tcpsock, 583 SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0) 584 syslog(LOG_ERR, "setsockopt SO_REUSEADDR: %m"); 585 if (bind(tcpsock, ai_tcp->ai_addr, ai_tcp->ai_addrlen) < 0) { 586 syslog(LOG_ERR, "can't bind tcp addr"); 587 exit(1); 588 } 589 if (listen(tcpsock, 5) < 0) { 590 syslog(LOG_ERR, "listen failed"); 591 exit(1); 592 } 593 if (!rpcb_set(RPCPROG_NFS, 2, nconf_tcp, &nb_tcp) || 594 !rpcb_set(RPCPROG_NFS, 3, nconf_tcp, &nb_tcp)) { 595 syslog(LOG_ERR, "can't register tcp with rpcbind"); 596 exit(1); 597 } 598 FD_SET(tcpsock, &sockbits); 599 maxsock = tcpsock; 600 connect_type_cnt++; 601 } 602 603 if (tcpflag && ip6flag) { 604 if ((tcp6sock = socket(ai_tcp6->ai_family, ai_tcp6->ai_socktype, 605 ai_tcp6->ai_protocol)) < 0) { 606 syslog(LOG_ERR, "can't create tcp socket"); 607 exit(1); 608 } 609 if (setsockopt(tcp6sock, 610 SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0) 611 syslog(LOG_ERR, "setsockopt SO_REUSEADDR: %m"); 612 if (setsockopt(tcp6sock, IPPROTO_IPV6, IPV6_BINDV6ONLY, 613 &on, sizeof on) < 0) { 614 syslog(LOG_ERR, "can't set v6-only binding for tcp6 " 615 "socket: %m"); 616 exit(1); 617 } 618 if (bind(tcp6sock, ai_tcp6->ai_addr, ai_tcp6->ai_addrlen) < 0) { 619 syslog(LOG_ERR, "can't bind tcp6 addr"); 620 exit(1); 621 } 622 if (listen(tcp6sock, 5) < 0) { 623 syslog(LOG_ERR, "listen failed"); 624 exit(1); 625 } 626 if (!rpcb_set(RPCPROG_NFS, 2, nconf_tcp6, &nb_tcp6) || 627 !rpcb_set(RPCPROG_NFS, 3, nconf_tcp6, &nb_tcp6)) { 628 syslog(LOG_ERR, "can't register tcp6 with rpcbind"); 629 exit(1); 630 } 631 FD_SET(tcp6sock, &sockbits); 632 maxsock = tcp6sock; 633 connect_type_cnt++; 634 } 635 636 #ifdef notyet 637 /* Now set up the master server socket waiting for tp4 connections. */ 638 if (tp4flag) { 639 if ((tp4sock = socket(AF_ISO, SOCK_SEQPACKET, 0)) < 0) { 640 syslog(LOG_ERR, "can't create tp4 socket"); 641 exit(1); 642 } 643 if (setsockopt(tp4sock, 644 SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0) 645 syslog(LOG_ERR, "setsockopt SO_REUSEADDR: %m"); 646 memset(&isoaddr, 0, sizeof(isoaddr)); 647 isoaddr.siso_family = AF_ISO; 648 isoaddr.siso_tlen = 2; 649 cp = TSEL(&isoaddr); 650 *cp++ = (NFS_PORT >> 8); 651 *cp = (NFS_PORT & 0xff); 652 isoaddr.siso_len = sizeof(isoaddr); 653 if (bind(tp4sock, 654 (struct sockaddr *)&isoaddr, sizeof(isoaddr)) < 0) { 655 syslog(LOG_ERR, "can't bind tp4 addr"); 656 exit(1); 657 } 658 if (listen(tp4sock, 5) < 0) { 659 syslog(LOG_ERR, "listen failed"); 660 exit(1); 661 } 662 /* 663 * XXX 664 * Someday this should probably use "rpcbind", the son of 665 * portmap. 666 */ 667 if (!pmap_set(RPCPROG_NFS, NFS_VER2, IPPROTO_TCP, NFS_PORT)) { 668 syslog(LOG_ERR, "can't register tcp with portmap"); 669 exit(1); 670 } 671 FD_SET(tp4sock, &sockbits); 672 maxsock = tp4sock; 673 connect_type_cnt++; 674 } 675 676 /* Now set up the master server socket waiting for tpip connections. */ 677 if (tpipflag) { 678 if ((tpipsock = socket(AF_INET, SOCK_SEQPACKET, 0)) < 0) { 679 syslog(LOG_ERR, "can't create tpip socket"); 680 exit(1); 681 } 682 if (setsockopt(tpipsock, 683 SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0) 684 syslog(LOG_ERR, "setsockopt SO_REUSEADDR: %m"); 685 inetaddr.sin_family = AF_INET; 686 inetaddr.sin_addr.s_addr = INADDR_ANY; 687 inetaddr.sin_port = htons(NFS_PORT); 688 inetaddr.sin_len = sizeof(inetaddr); 689 memset(inetaddr.sin_zero, 0, sizeof(inetaddr.sin_zero)); 690 if (bind(tpipsock, 691 (struct sockaddr *)&inetaddr, sizeof (inetaddr)) < 0) { 692 syslog(LOG_ERR, "can't bind tcp addr"); 693 exit(1); 694 } 695 if (listen(tpipsock, 5) < 0) { 696 syslog(LOG_ERR, "listen failed"); 697 exit(1); 698 } 699 /* 700 * XXX 701 * Someday this should probably use "rpcbind", the son of 702 * portmap. 703 */ 704 if (!pmap_set(RPCPROG_NFS, NFS_VER2, IPPROTO_TCP, NFS_PORT)) { 705 syslog(LOG_ERR, "can't register tcp with portmap"); 706 exit(1); 707 } 708 FD_SET(tpipsock, &sockbits); 709 maxsock = tpipsock; 710 connect_type_cnt++; 711 } 712 #endif /* notyet */ 713 714 if (connect_type_cnt == 0) 715 exit(0); 716 717 setproctitle("master"); 718 719 /* 720 * Loop forever accepting connections and passing the sockets 721 * into the kernel for the mounts. 722 */ 723 for (;;) { 724 ready = sockbits; 725 if (connect_type_cnt > 1) { 726 if (select(maxsock + 1, 727 &ready, NULL, NULL, NULL) < 1) { 728 syslog(LOG_ERR, "select failed: %m"); 729 exit(1); 730 } 731 } 732 if (tcpflag && FD_ISSET(tcpsock, &ready)) { 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 (tcpflag && ip6flag && FD_ISSET(tcp6sock, &ready)) { 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 (tp4flag && FD_ISSET(tp4sock, &ready)) { 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 if (tpipflag && FD_ISSET(tpipsock, &ready)) { 788 len = sizeof(inetpeer); 789 if ((msgsock = accept(tpipsock, 790 (struct sockaddr *)&inetpeer, &len)) < 0) { 791 syslog(LOG_ERR, "Accept failed: %m"); 792 exit(1); 793 } 794 if (setsockopt(msgsock, SOL_SOCKET, 795 SO_KEEPALIVE, (char *)&on, sizeof(on)) < 0) 796 syslog(LOG_ERR, "setsockopt SO_KEEPALIVE: %m"); 797 nfsdargs.sock = msgsock; 798 nfsdargs.name = (caddr_t)&inetpeer; 799 nfsdargs.namelen = len; 800 nfssvc(NFSSVC_ADDSOCK, &nfsdargs); 801 (void)close(msgsock); 802 } 803 #endif /* notyet */ 804 } 805 } 806 807 void 808 usage() 809 { 810 811 (void)fprintf(stderr, "usage: nfsd %s\n", USAGE); 812 exit(1); 813 } 814 815 void 816 nonfs(signo) 817 int signo; 818 { 819 820 syslog(LOG_ERR, "missing system call: NFS not available."); 821 } 822 823 void 824 reapchild(signo) 825 int signo; 826 { 827 828 while (wait3(NULL, WNOHANG, NULL) > 0); 829 } 830
Indexes created Tue Sep 23 07:09:52 GMT 2025