1 /* 2 * Copyright (c) 1989, 1993, 1994 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Rick Macklem at The University of Guelph. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * @(#) Copyright (c) 1989, 1993, 1994 The Regents of the University of California. All rights reserved. 37 * @(#)nfsd.c 8.9 (Berkeley) 3/29/95 38 * $FreeBSD: src/sbin/nfsd/nfsd.c,v 1.15.2.1 2000/09/16 22:52:23 brian Exp $ 39 * $DragonFly: src/sbin/nfsd/nfsd.c,v 1.8 2005/11/06 12:44:49 swildner Exp $ 40 */ 41 42 #include <sys/param.h> 43 #include <sys/syslog.h> 44 #include <sys/wait.h> 45 #include <sys/mount.h> 46 47 #include <rpc/rpc.h> 48 #include <rpc/pmap_clnt.h> 49 50 #include <netdb.h> 51 #include <arpa/inet.h> 52 #ifdef ISO 53 #include <netiso/iso.h> 54 #endif 55 #include <nfs/rpcv2.h> 56 #include <nfs/nfsproto.h> 57 #include <nfs/nfs.h> 58 59 #include <err.h> 60 #include <errno.h> 61 #include <stdio.h> 62 #include <stdlib.h> 63 #include <strings.h> 64 #include <unistd.h> 65 66 /* Global defs */ 67 #ifdef DEBUG 68 #define syslog(e, s) fprintf(stderr,(s)) 69 int debug = 1; 70 #else 71 int debug = 0; 72 #endif 73 74 struct nfsd_srvargs nsd; 75 #ifdef OLD_SETPROCTITLE 76 char **Argv = NULL; /* pointer to argument vector */ 77 char *LastArg = NULL; /* end of argv */ 78 #endif 79 80 #ifdef NFSKERB 81 char lnam[ANAME_SZ]; 82 KTEXT_ST kt; 83 AUTH_DAT kauth; 84 char inst[INST_SZ]; 85 struct nfsrpc_fullblock kin, kout; 86 struct nfsrpc_fullverf kverf; 87 NFSKERBKEY_T kivec; 88 struct timeval ktv; 89 NFSKERBKEYSCHED_T kerb_keysched; 90 #endif 91 92 void nonfs(int); 93 void reapchild(int); 94 void setbindhost(struct sockaddr_in *ia, const char *bindhost); 95 #ifdef OLD_SETPROCTITLE 96 #ifdef __FreeBSD__ 97 void setproctitle(char *); 98 #endif 99 #endif 100 void usage(void); 101 102 /* 103 * Nfs server daemon mostly just a user context for nfssvc() 104 * 105 * 1 - do file descriptor and signal cleanup 106 * 2 - fork the nfsd(s) 107 * 3 - create server socket(s) 108 * 4 - register socket with portmap 109 * 110 * For connectionless protocols, just pass the socket into the kernel via. 111 * nfssvc(). 112 * For connection based sockets, loop doing accepts. When you get a new 113 * socket from accept, pass the msgsock into the kernel via. nfssvc(). 114 * The arguments are: 115 * -c - support iso cltp clients 116 * -r - reregister with portmapper 117 * -t - support tcp nfs clients 118 * -u - support udp nfs clients 119 * followed by "n" which is the number of nfsds' to fork off 120 */ 121 int 122 main(int argc, char **argv, char **envp) 123 { 124 struct nfsd_args nfsdargs; 125 struct sockaddr_in inetaddr, inetpeer; 126 #ifdef ISO 127 struct sockaddr_iso isoaddr, isopeer; 128 char *cp; 129 #endif 130 fd_set ready, sockbits; 131 int ch, cltpflag, connect_type_cnt, i, len, maxsock = -1, msgsock; 132 int nfsdcnt, nfssvc_flag, on, reregister, sock, tcpflag, tcpsock = -1; 133 int tp4cnt, tp4flag, tpipcnt, tpipflag, udpflag; 134 int bindhostc = 0, bindanyflag; 135 char **bindhost = NULL; 136 #ifdef notyet 137 int tp4sock, tpipsock; 138 #endif 139 #ifdef NFSKERB 140 struct group *grp; 141 struct passwd *pwd; 142 struct ucred *cr; 143 struct timeval ktv; 144 char **cpp; 145 #endif 146 #ifdef __FreeBSD__ 147 struct vfsconf vfc; 148 int error; 149 150 error = getvfsbyname("nfs", &vfc); 151 if (error && vfsisloadable("nfs")) { 152 if (vfsload("nfs")) 153 err(1, "vfsload(nfs)"); 154 endvfsent(); /* flush cache */ 155 error = getvfsbyname("nfs", &vfc); 156 } 157 if (error) 158 errx(1, "NFS is not available in the running kernel"); 159 #endif 160 161 #ifdef OLD_SETPROCTITLE 162 /* Save start and extent of argv for setproctitle. */ 163 Argv = argv; 164 if (envp == 0 || *envp == 0) 165 envp = argv; 166 while (*envp) 167 envp++; 168 LastArg = envp[-1] + strlen(envp[-1]); 169 #endif 170 171 #define MAXNFSDCNT 20 172 #define DEFNFSDCNT 4 173 nfsdcnt = DEFNFSDCNT; 174 cltpflag = reregister = tcpflag = tp4cnt = tp4flag = tpipcnt = 0; 175 bindanyflag = tpipflag = udpflag = 0; 176 #ifdef ISO 177 #define GETOPT "ach:n:rtu" 178 #define USAGE "[-acrtu] [-n num_servers] [-h bindip]" 179 #else 180 #define GETOPT "ah:n:rtu" 181 #define USAGE "[-artu] [-n num_servers] [-h bindip]" 182 #endif 183 while ((ch = getopt(argc, argv, GETOPT)) != -1) 184 switch (ch) { 185 case 'a': 186 bindanyflag = 1; 187 break; 188 case 'n': 189 nfsdcnt = atoi(optarg); 190 if (nfsdcnt < 1 || nfsdcnt > MAXNFSDCNT) { 191 warnx("nfsd count %d; reset to %d", nfsdcnt, 192 DEFNFSDCNT); 193 nfsdcnt = DEFNFSDCNT; 194 } 195 break; 196 case 'h': 197 bindhostc++; 198 bindhost = realloc(bindhost,sizeof(char *)*bindhostc); 199 if (bindhost == NULL) 200 errx(1, "Out of memory"); 201 bindhost[bindhostc-1] = strdup(optarg); 202 if (bindhost[bindhostc-1] == NULL) 203 errx(1, "Out of memory"); 204 break; 205 case 'r': 206 reregister = 1; 207 break; 208 case 't': 209 tcpflag = 1; 210 break; 211 case 'u': 212 udpflag = 1; 213 break; 214 #ifdef ISO 215 case 'c': 216 cltpflag = 1; 217 break; 218 #ifdef notyet 219 case 'i': 220 tp4cnt = 1; 221 break; 222 case 'p': 223 tpipcnt = 1; 224 break; 225 #endif /* notyet */ 226 #endif /* ISO */ 227 default: 228 case '?': 229 usage(); 230 }; 231 if (!tcpflag && !udpflag) 232 udpflag = 1; 233 argv += optind; 234 argc -= optind; 235 236 /* 237 * XXX 238 * Backward compatibility, trailing number is the count of daemons. 239 */ 240 if (argc > 1) 241 usage(); 242 if (argc == 1) { 243 nfsdcnt = atoi(argv[0]); 244 if (nfsdcnt < 1 || nfsdcnt > MAXNFSDCNT) { 245 warnx("nfsd count %d; reset to %d", nfsdcnt, 246 DEFNFSDCNT); 247 nfsdcnt = DEFNFSDCNT; 248 } 249 } 250 251 if (bindhostc == 0 || bindanyflag) { 252 bindhostc++; 253 bindhost = realloc(bindhost,sizeof(char *)*bindhostc); 254 if (bindhost == NULL) 255 errx(1, "Out of memory"); 256 bindhost[bindhostc-1] = strdup("*"); 257 if (bindhost[bindhostc-1] == NULL) 258 errx(1, "Out of memory"); 259 } 260 261 if (debug == 0) { 262 daemon(0, 0); 263 signal(SIGHUP, SIG_IGN); 264 signal(SIGINT, SIG_IGN); 265 signal(SIGQUIT, SIG_IGN); 266 signal(SIGSYS, nonfs); 267 signal(SIGTERM, SIG_IGN); 268 } 269 signal(SIGCHLD, reapchild); 270 271 if (reregister) { 272 if (udpflag && 273 (!pmap_set(RPCPROG_NFS, 2, IPPROTO_UDP, NFS_PORT) || 274 !pmap_set(RPCPROG_NFS, 3, IPPROTO_UDP, NFS_PORT))) 275 err(1, "can't register with portmap for UDP"); 276 if (tcpflag && 277 (!pmap_set(RPCPROG_NFS, 2, IPPROTO_TCP, NFS_PORT) || 278 !pmap_set(RPCPROG_NFS, 3, IPPROTO_TCP, NFS_PORT))) 279 err(1, "can't register with portmap for TCP"); 280 exit(0); 281 } 282 openlog("nfsd:", LOG_PID, LOG_DAEMON); 283 284 for (i = 0; i < nfsdcnt; i++) { 285 switch (fork()) { 286 case -1: 287 syslog(LOG_ERR, "fork: %m"); 288 exit (1); 289 case 0: 290 break; 291 default: 292 continue; 293 } 294 295 setproctitle("server"); 296 nfssvc_flag = NFSSVC_NFSD; 297 nsd.nsd_nfsd = NULL; 298 #ifdef NFSKERB 299 if (sizeof (struct nfsrpc_fullverf) != RPCX_FULLVERF || 300 sizeof (struct nfsrpc_fullblock) != RPCX_FULLBLOCK) 301 syslog(LOG_ERR, "Yikes NFSKERB structs not packed!"); 302 nsd.nsd_authstr = (u_char *)&kt; 303 nsd.nsd_authlen = sizeof (kt); 304 nsd.nsd_verfstr = (u_char *)&kverf; 305 nsd.nsd_verflen = sizeof (kverf); 306 #endif 307 while (nfssvc(nfssvc_flag, &nsd) < 0) { 308 if (errno != ENEEDAUTH) { 309 syslog(LOG_ERR, "nfssvc: %m"); 310 exit(1); 311 } 312 nfssvc_flag = NFSSVC_NFSD | NFSSVC_AUTHINFAIL; 313 #ifdef NFSKERB 314 /* 315 * Get the Kerberos ticket out of the authenticator 316 * verify it and convert the principal name to a user 317 * name. The user name is then converted to a set of 318 * user credentials via the password and group file. 319 * Finally, decrypt the timestamp and validate it. 320 * For more info see the IETF Draft "Authentication 321 * in ONC RPC". 322 */ 323 kt.length = ntohl(kt.length); 324 if (gettimeofday(&ktv, (struct timezone *)0) == 0 && 325 kt.length > 0 && kt.length <= 326 (RPCAUTH_MAXSIZ - 3 * NFSX_UNSIGNED)) { 327 kin.w1 = NFS_KERBW1(kt); 328 kt.mbz = 0; 329 strcpy(inst, "*"); 330 if (krb_rd_req(&kt, NFS_KERBSRV, 331 inst, nsd.nsd_haddr, &kauth, "") == RD_AP_OK && 332 krb_kntoln(&kauth, lnam) == KSUCCESS && 333 (pwd = getpwnam(lnam)) != NULL) { 334 cr = &nsd.nsd_cr; 335 cr->cr_uid = pwd->pw_uid; 336 cr->cr_groups[0] = pwd->pw_gid; 337 cr->cr_ngroups = 1; 338 setgrent(); 339 while ((grp = getgrent()) != NULL) { 340 if (grp->gr_gid == cr->cr_groups[0]) 341 continue; 342 for (cpp = grp->gr_mem; 343 *cpp != NULL; ++cpp) 344 if (!strcmp(*cpp, lnam)) 345 break; 346 if (*cpp == NULL) 347 continue; 348 cr->cr_groups[cr->cr_ngroups++] 349 = grp->gr_gid; 350 if (cr->cr_ngroups == NGROUPS) 351 break; 352 } 353 endgrent(); 354 355 /* 356 * Get the timestamp verifier out of the 357 * authenticator and verifier strings. 358 */ 359 kin.t1 = kverf.t1; 360 kin.t2 = kverf.t2; 361 kin.w2 = kverf.w2; 362 bzero((caddr_t)kivec, sizeof (kivec)); 363 bcopy((caddr_t)kauth.session, 364 (caddr_t)nsd.nsd_key,sizeof(kauth.session)); 365 366 /* 367 * Decrypt the timestamp verifier in CBC mode. 368 */ 369 XXX 370 371 /* 372 * Validate the timestamp verifier, to 373 * check that the session key is ok. 374 */ 375 nsd.nsd_timestamp.tv_sec = ntohl(kout.t1); 376 nsd.nsd_timestamp.tv_usec = ntohl(kout.t2); 377 nsd.nsd_ttl = ntohl(kout.w1); 378 if ((nsd.nsd_ttl - 1) == ntohl(kout.w2)) 379 nfssvc_flag = NFSSVC_NFSD | NFSSVC_AUTHIN; 380 } 381 #endif /* NFSKERB */ 382 } 383 exit(0); 384 } 385 386 /* If we are serving udp, set up the socket. */ 387 for (i = 0; udpflag && i < bindhostc; i++) { 388 if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0) { 389 syslog(LOG_ERR, "can't create udp socket"); 390 exit(1); 391 } 392 setbindhost(&inetaddr, bindhost[i]); 393 if (bind(sock, 394 (struct sockaddr *)&inetaddr, sizeof(inetaddr)) < 0) { 395 syslog(LOG_ERR, "can't bind udp addr %s: %m", bindhost[i]); 396 exit(1); 397 } 398 if (!pmap_set(RPCPROG_NFS, 2, IPPROTO_UDP, NFS_PORT) || 399 !pmap_set(RPCPROG_NFS, 3, IPPROTO_UDP, NFS_PORT)) { 400 syslog(LOG_ERR, "can't register with udp portmap"); 401 exit(1); 402 } 403 nfsdargs.sock = sock; 404 nfsdargs.name = NULL; 405 nfsdargs.namelen = 0; 406 if (nfssvc(NFSSVC_ADDSOCK, &nfsdargs) < 0) { 407 syslog(LOG_ERR, "can't Add UDP socket"); 408 exit(1); 409 } 410 close(sock); 411 } 412 413 #ifdef ISO 414 /* If we are serving cltp, set up the socket. */ 415 if (cltpflag) { 416 if ((sock = socket(AF_ISO, SOCK_DGRAM, 0)) < 0) { 417 syslog(LOG_ERR, "can't create cltp socket"); 418 exit(1); 419 } 420 memset(&isoaddr, 0, sizeof(isoaddr)); 421 isoaddr.siso_family = AF_ISO; 422 isoaddr.siso_tlen = 2; 423 cp = TSEL(&isoaddr); 424 *cp++ = (NFS_PORT >> 8); 425 *cp = (NFS_PORT & 0xff); 426 isoaddr.siso_len = sizeof(isoaddr); 427 if (bind(sock, 428 (struct sockaddr *)&isoaddr, sizeof(isoaddr)) < 0) { 429 syslog(LOG_ERR, "can't bind cltp addr"); 430 exit(1); 431 } 432 #ifdef notyet 433 /* 434 * XXX 435 * Someday this should probably use "rpcbind", the son of 436 * portmap. 437 */ 438 if (!pmap_set(RPCPROG_NFS, NFS_VER2, IPPROTO_UDP, NFS_PORT)) { 439 syslog(LOG_ERR, "can't register with udp portmap"); 440 exit(1); 441 } 442 #endif /* notyet */ 443 nfsdargs.sock = sock; 444 nfsdargs.name = NULL; 445 nfsdargs.namelen = 0; 446 if (nfssvc(NFSSVC_ADDSOCK, &nfsdargs) < 0) { 447 syslog(LOG_ERR, "can't add UDP socket"); 448 exit(1); 449 } 450 close(sock); 451 } 452 #endif /* ISO */ 453 454 /* Now set up the master server socket waiting for tcp connections. */ 455 on = 1; 456 FD_ZERO(&sockbits); 457 connect_type_cnt = 0; 458 for (i = 0; tcpflag && i < bindhostc; i++) { 459 if ((tcpsock = socket(AF_INET, SOCK_STREAM, 0)) < 0) { 460 syslog(LOG_ERR, "can't create tcp socket"); 461 exit(1); 462 } 463 if (setsockopt(tcpsock, 464 SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0) 465 syslog(LOG_ERR, "setsockopt SO_REUSEADDR: %m"); 466 setbindhost(&inetaddr, bindhost[i]); 467 if (bind(tcpsock, 468 (struct sockaddr *)&inetaddr, sizeof (inetaddr)) < 0) { 469 syslog(LOG_ERR, "can't bind tcp addr %s: %m", bindhost[i]); 470 exit(1); 471 } 472 if (listen(tcpsock, 5) < 0) { 473 syslog(LOG_ERR, "listen failed"); 474 exit(1); 475 } 476 if (!pmap_set(RPCPROG_NFS, 2, IPPROTO_TCP, NFS_PORT) || 477 !pmap_set(RPCPROG_NFS, 3, IPPROTO_TCP, NFS_PORT)) { 478 syslog(LOG_ERR, "can't register tcp with portmap"); 479 exit(1); 480 } 481 FD_SET(tcpsock, &sockbits); 482 maxsock = tcpsock; 483 connect_type_cnt++; 484 } 485 486 #ifdef notyet 487 /* Now set up the master server socket waiting for tp4 connections. */ 488 if (tp4flag) { 489 if ((tp4sock = socket(AF_ISO, SOCK_SEQPACKET, 0)) < 0) { 490 syslog(LOG_ERR, "can't create tp4 socket"); 491 exit(1); 492 } 493 if (setsockopt(tp4sock, 494 SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0) 495 syslog(LOG_ERR, "setsockopt SO_REUSEADDR: %m"); 496 memset(&isoaddr, 0, sizeof(isoaddr)); 497 isoaddr.siso_family = AF_ISO; 498 isoaddr.siso_tlen = 2; 499 cp = TSEL(&isoaddr); 500 *cp++ = (NFS_PORT >> 8); 501 *cp = (NFS_PORT & 0xff); 502 isoaddr.siso_len = sizeof(isoaddr); 503 if (bind(tp4sock, 504 (struct sockaddr *)&isoaddr, sizeof (isoaddr)) < 0) { 505 syslog(LOG_ERR, "can't bind tp4 addr"); 506 exit(1); 507 } 508 if (listen(tp4sock, 5) < 0) { 509 syslog(LOG_ERR, "listen failed"); 510 exit(1); 511 } 512 /* 513 * XXX 514 * Someday this should probably use "rpcbind", the son of 515 * portmap. 516 */ 517 if (!pmap_set(RPCPROG_NFS, NFS_VER2, IPPROTO_TCP, NFS_PORT)) { 518 syslog(LOG_ERR, "can't register tcp with portmap"); 519 exit(1); 520 } 521 FD_SET(tp4sock, &sockbits); 522 maxsock = tp4sock; 523 connect_type_cnt++; 524 } 525 526 /* Now set up the master server socket waiting for tpip connections. */ 527 for (i = 0; tpipflag && i < bindhostc; i++) { 528 if ((tpipsock = socket(AF_INET, SOCK_SEQPACKET, 0)) < 0) { 529 syslog(LOG_ERR, "can't create tpip socket"); 530 exit(1); 531 } 532 if (setsockopt(tpipsock, 533 SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0) 534 syslog(LOG_ERR, "setsockopt SO_REUSEADDR: %m"); 535 setbindhost(&inetaddr, bindhost[i]); 536 if (bind(tpipsock, 537 (struct sockaddr *)&inetaddr, sizeof (inetaddr)) < 0) { 538 syslog(LOG_ERR, "can't bind tcp addr %s: %m", bindhost[i]); 539 exit(1); 540 } 541 if (listen(tpipsock, 5) < 0) { 542 syslog(LOG_ERR, "listen failed"); 543 exit(1); 544 } 545 /* 546 * XXX 547 * Someday this should probably use "rpcbind", the son of 548 * portmap. 549 */ 550 if (!pmap_set(RPCPROG_NFS, NFS_VER2, IPPROTO_TCP, NFS_PORT)) { 551 syslog(LOG_ERR, "can't register tcp with portmap"); 552 exit(1); 553 } 554 FD_SET(tpipsock, &sockbits); 555 maxsock = tpipsock; 556 connect_type_cnt++; 557 } 558 #endif /* notyet */ 559 560 if (connect_type_cnt == 0) 561 exit(0); 562 563 setproctitle("master"); 564 565 /* 566 * Loop forever accepting connections and passing the sockets 567 * into the kernel for the mounts. 568 */ 569 for (;;) { 570 ready = sockbits; 571 if (connect_type_cnt > 1) { 572 if (select(maxsock + 1, 573 &ready, NULL, NULL, NULL) < 1) { 574 syslog(LOG_ERR, "select failed: %m"); 575 exit(1); 576 } 577 } 578 if (tcpflag && FD_ISSET(tcpsock, &ready)) { 579 len = sizeof(inetpeer); 580 if ((msgsock = accept(tcpsock, 581 (struct sockaddr *)&inetpeer, &len)) < 0) { 582 syslog(LOG_ERR, "accept failed: %m"); 583 exit(1); 584 } 585 memset(inetpeer.sin_zero, 0, sizeof(inetpeer.sin_zero)); 586 if (setsockopt(msgsock, SOL_SOCKET, 587 SO_KEEPALIVE, (char *)&on, sizeof(on)) < 0) 588 syslog(LOG_ERR, 589 "setsockopt SO_KEEPALIVE: %m"); 590 nfsdargs.sock = msgsock; 591 nfsdargs.name = (caddr_t)&inetpeer; 592 nfsdargs.namelen = sizeof(inetpeer); 593 nfssvc(NFSSVC_ADDSOCK, &nfsdargs); 594 close(msgsock); 595 } 596 #ifdef notyet 597 if (tp4flag && FD_ISSET(tp4sock, &ready)) { 598 len = sizeof(isopeer); 599 if ((msgsock = accept(tp4sock, 600 (struct sockaddr *)&isopeer, &len)) < 0) { 601 syslog(LOG_ERR, "accept failed: %m"); 602 exit(1); 603 } 604 if (setsockopt(msgsock, SOL_SOCKET, 605 SO_KEEPALIVE, (char *)&on, sizeof(on)) < 0) 606 syslog(LOG_ERR, 607 "setsockopt SO_KEEPALIVE: %m"); 608 nfsdargs.sock = msgsock; 609 nfsdargs.name = (caddr_t)&isopeer; 610 nfsdargs.namelen = len; 611 nfssvc(NFSSVC_ADDSOCK, &nfsdargs); 612 close(msgsock); 613 } 614 if (tpipflag && FD_ISSET(tpipsock, &ready)) { 615 len = sizeof(inetpeer); 616 if ((msgsock = accept(tpipsock, 617 (struct sockaddr *)&inetpeer, &len)) < 0) { 618 syslog(LOG_ERR, "accept failed: %m"); 619 exit(1); 620 } 621 if (setsockopt(msgsock, SOL_SOCKET, 622 SO_KEEPALIVE, (char *)&on, sizeof(on)) < 0) 623 syslog(LOG_ERR, "setsockopt SO_KEEPALIVE: %m"); 624 nfsdargs.sock = msgsock; 625 nfsdargs.name = (caddr_t)&inetpeer; 626 nfsdargs.namelen = len; 627 nfssvc(NFSSVC_ADDSOCK, &nfsdargs); 628 close(msgsock); 629 } 630 #endif /* notyet */ 631 } 632 } 633 634 void 635 setbindhost(struct sockaddr_in *ia, const char *bindhost) 636 { 637 ia->sin_family = AF_INET; 638 ia->sin_port = htons(NFS_PORT); 639 ia->sin_len = sizeof(*ia); 640 if (bindhost == NULL || strcmp(bindhost,"*") == 0) { 641 ia->sin_addr.s_addr = INADDR_ANY; 642 } else { 643 if (inet_aton(bindhost, &ia->sin_addr) == 0) { 644 struct hostent *he; 645 646 he = gethostbyname2(bindhost, ia->sin_family); 647 if (he == NULL) { 648 syslog(LOG_ERR, "gethostbyname of %s failed", bindhost); 649 exit(1); 650 } 651 bcopy(he->h_addr, &ia->sin_addr, he->h_length); 652 } 653 } 654 } 655 656 void 657 usage(void) 658 { 659 fprintf(stderr, "usage: nfsd %s\n", USAGE); 660 exit(1); 661 } 662 663 void 664 nonfs(int signo) 665 { 666 syslog(LOG_ERR, "missing system call: NFS not available"); 667 } 668 669 void 670 reapchild(int signo) 671 { 672 673 while (wait3(NULL, WNOHANG, NULL) > 0); 674 } 675 676 #ifdef OLD_SETPROCTITLE 677 #ifdef __FreeBSD__ 678 void 679 setproctitle(char *a) 680 { 681 char *cp; 682 char buf[80]; 683 684 cp = Argv[0]; 685 snprintf(buf, sizeof(buf), "nfsd-%s", a); 686 strncpy(cp, buf, LastArg - cp); 687 cp += strlen(cp); 688 while (cp < LastArg) 689 *cp++ = '\0'; 690 Argv[1] = NULL; 691 } 692 #endif /* __FreeBSD__ */ 693 #endif 694