nfsd.c revision 1.19
1 /* $NetBSD: nfsd.c,v 1.19 1996/02/18 23:18:56 mycroft 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 #ifndef lint 40 static char copyright[] = 41 "@(#) 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 static char rcsid[] = "$NetBSD: nfsd.c,v 1.19 1996/02/18 23:18:56 mycroft 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 <strings.h> 88 #include <syslog.h> 89 #include <unistd.h> 90 91 /* Global defs */ 92 #ifdef DEBUG 93 #define syslog(e, s) fprintf(stderr,(s)) 94 int debug = 1; 95 #else 96 int debug = 0; 97 #endif 98 99 struct nfsd_srvargs nsd; 100 101 #ifdef NFSKERB 102 char lnam[ANAME_SZ]; 103 KTEXT_ST kt; 104 AUTH_DAT kauth; 105 char inst[INST_SZ]; 106 struct nfsrpc_fullblock kin, kout; 107 struct nfsrpc_fullverf kverf; 108 NFSKERBKEY_T kivec; 109 struct timeval ktv; 110 NFSKERBKEYSCHED_T kerb_keysched; 111 #endif 112 113 void nonfs __P((int)); 114 void reapchild __P((int)); 115 void usage __P((void)); 116 117 /* 118 * Nfs server daemon mostly just a user context for nfssvc() 119 * 120 * 1 - do file descriptor and signal cleanup 121 * 2 - fork the nfsd(s) 122 * 3 - create server socket(s) 123 * 4 - register socket with portmap 124 * 125 * For connectionless protocols, just pass the socket into the kernel via. 126 * nfssvc(). 127 * For connection based sockets, loop doing accepts. When you get a new 128 * socket from accept, pass the msgsock into the kernel via. nfssvc(). 129 * The arguments are: 130 * -c - support iso cltp clients 131 * -r - reregister with portmapper 132 * -t - support tcp nfs clients 133 * -u - support udp nfs clients 134 * followed by "n" which is the number of nfsds' to fork off 135 */ 136 int 137 main(argc, argv, envp) 138 int argc; 139 char *argv[], *envp[]; 140 { 141 extern int optind; 142 struct group *grp; 143 struct nfsd_args nfsdargs; 144 struct passwd *pwd; 145 struct ucred *cr; 146 struct sockaddr_in inetaddr, inetpeer; 147 #ifdef ISO 148 struct sockaddr_iso isoaddr, isopeer; 149 #endif 150 struct timeval ktv; 151 fd_set ready, sockbits; 152 int ch, cltpflag, connect_type_cnt, i, len, maxsock, msgsock; 153 int nfsdcnt, nfssvc_flag, on, reregister, sock, tcpflag, tcpsock; 154 int tp4cnt, tp4flag, tp4sock, tpipcnt, tpipflag, tpipsock, udpflag; 155 char *cp, **cpp; 156 157 #define MAXNFSDCNT 20 158 #define DEFNFSDCNT 4 159 nfsdcnt = DEFNFSDCNT; 160 cltpflag = reregister = tcpflag = tp4cnt = tp4flag = tpipcnt = 0; 161 tpipflag = udpflag = 0; 162 #ifdef ISO 163 #define GETOPT "cn:rtu" 164 #define USAGE "[-crtu] [-n num_servers]" 165 #else 166 #define GETOPT "n:rtu" 167 #define USAGE "[-rtu] [-n num_servers]" 168 #endif 169 while ((ch = getopt(argc, argv, GETOPT)) != EOF) 170 switch (ch) { 171 case 'n': 172 nfsdcnt = atoi(optarg); 173 if (nfsdcnt < 1 || nfsdcnt > MAXNFSDCNT) { 174 warnx("nfsd count %d; reset to %d", DEFNFSDCNT); 175 nfsdcnt = DEFNFSDCNT; 176 } 177 break; 178 case 'r': 179 reregister = 1; 180 break; 181 case 't': 182 tcpflag = 1; 183 break; 184 case 'u': 185 udpflag = 1; 186 break; 187 #ifdef ISO 188 case 'c': 189 cltpflag = 1; 190 break; 191 #ifdef notyet 192 case 'i': 193 tp4cnt = 1; 194 break; 195 case 'p': 196 tpipcnt = 1; 197 break; 198 #endif /* notyet */ 199 #endif /* ISO */ 200 default: 201 case '?': 202 usage(); 203 }; 204 argv += optind; 205 argc -= optind; 206 207 /* 208 * XXX 209 * Backward compatibility, trailing number is the count of daemons. 210 */ 211 if (argc > 1) 212 usage(); 213 if (argc == 1) { 214 nfsdcnt = atoi(argv[0]); 215 if (nfsdcnt < 1 || nfsdcnt > MAXNFSDCNT) { 216 warnx("nfsd count %d; reset to %d", DEFNFSDCNT); 217 nfsdcnt = DEFNFSDCNT; 218 } 219 } 220 221 if (debug == 0) { 222 daemon(0, 0); 223 (void)signal(SIGHUP, SIG_IGN); 224 (void)signal(SIGINT, SIG_IGN); 225 (void)signal(SIGQUIT, SIG_IGN); 226 (void)signal(SIGSYS, nonfs); 227 (void)signal(SIGTERM, SIG_IGN); 228 } 229 (void)signal(SIGCHLD, reapchild); 230 231 if (reregister) { 232 if (udpflag && 233 (!pmap_set(RPCPROG_NFS, 2, IPPROTO_UDP, NFS_PORT) || 234 !pmap_set(RPCPROG_NFS, 3, IPPROTO_UDP, NFS_PORT))) 235 err(1, "can't register with portmap for UDP."); 236 if (tcpflag && 237 (!pmap_set(RPCPROG_NFS, 2, IPPROTO_TCP, NFS_PORT) || 238 !pmap_set(RPCPROG_NFS, 3, IPPROTO_TCP, NFS_PORT))) 239 err(1, "can't register with portmap for TCP."); 240 exit(0); 241 } 242 openlog("nfsd:", LOG_PID, LOG_DAEMON); 243 244 for (i = 0; i < nfsdcnt; i++) { 245 switch (fork()) { 246 case -1: 247 syslog(LOG_ERR, "fork: %m"); 248 exit (1); 249 case 0: 250 break; 251 default: 252 continue; 253 } 254 255 setproctitle("server"); 256 nfssvc_flag = NFSSVC_NFSD; 257 nsd.nsd_nfsd = NULL; 258 #ifdef NFSKERB 259 if (sizeof (struct nfsrpc_fullverf) != RPCX_FULLVERF || 260 sizeof (struct nfsrpc_fullblock) != RPCX_FULLBLOCK) 261 syslog(LOG_ERR, "Yikes NFSKERB structs not packed!"); 262 nsd.nsd_authstr = (u_char *)&kt; 263 nsd.nsd_authlen = sizeof (kt); 264 nsd.nsd_verfstr = (u_char *)&kverf; 265 nsd.nsd_verflen = sizeof (kverf); 266 #endif 267 while (nfssvc(nfssvc_flag, &nsd) < 0) { 268 if (errno != ENEEDAUTH) { 269 syslog(LOG_ERR, "nfssvc: %m"); 270 exit(1); 271 } 272 nfssvc_flag = NFSSVC_NFSD | NFSSVC_AUTHINFAIL; 273 #ifdef NFSKERB 274 /* 275 * Get the Kerberos ticket out of the authenticator 276 * verify it and convert the principal name to a user 277 * name. The user name is then converted to a set of 278 * user credentials via the password and group file. 279 * Finally, decrypt the timestamp and validate it. 280 * For more info see the IETF Draft "Authentication 281 * in ONC RPC". 282 */ 283 kt.length = ntohl(kt.length); 284 if (gettimeofday(&ktv, (struct timezone *)0) == 0 && 285 kt.length > 0 && kt.length <= 286 (RPCAUTH_MAXSIZ - 3 * NFSX_UNSIGNED)) { 287 kin.w1 = NFS_KERBW1(kt); 288 kt.mbz = 0; 289 (void)strcpy(inst, "*"); 290 if (krb_rd_req(&kt, NFS_KERBSRV, 291 inst, nsd.nsd_haddr, &kauth, "") == RD_AP_OK && 292 krb_kntoln(&kauth, lnam) == KSUCCESS && 293 (pwd = getpwnam(lnam)) != NULL) { 294 cr = &nsd.nsd_cr; 295 cr->cr_uid = pwd->pw_uid; 296 cr->cr_groups[0] = pwd->pw_gid; 297 cr->cr_ngroups = 1; 298 setgrent(); 299 while ((grp = getgrent()) != NULL) { 300 if (grp->gr_gid == cr->cr_groups[0]) 301 continue; 302 for (cpp = grp->gr_mem; 303 *cpp != NULL; ++cpp) 304 if (!strcmp(*cpp, lnam)) 305 break; 306 if (*cpp == NULL) 307 continue; 308 cr->cr_groups[cr->cr_ngroups++] 309 = grp->gr_gid; 310 if (cr->cr_ngroups == NGROUPS) 311 break; 312 } 313 endgrent(); 314 315 /* 316 * Get the timestamp verifier out of the 317 * authenticator and verifier strings. 318 */ 319 kin.t1 = kverf.t1; 320 kin.t2 = kverf.t2; 321 kin.w2 = kverf.w2; 322 bzero((caddr_t)kivec, sizeof (kivec)); 323 bcopy((caddr_t)kauth.session, 324 (caddr_t)nsd.nsd_key,sizeof(kauth.session)); 325 326 /* 327 * Decrypt the timestamp verifier in CBC mode. 328 */ 329 XXX 330 331 /* 332 * Validate the timestamp verifier, to 333 * check that the session key is ok. 334 */ 335 nsd.nsd_timestamp.tv_sec = ntohl(kout.t1); 336 nsd.nsd_timestamp.tv_usec = ntohl(kout.t2); 337 nsd.nsd_ttl = ntohl(kout.w1); 338 if ((nsd.nsd_ttl - 1) == ntohl(kout.w2)) 339 nfssvc_flag = NFSSVC_NFSD | NFSSVC_AUTHIN; 340 } 341 #endif /* NFSKERB */ 342 } 343 exit(0); 344 } 345 346 /* If we are serving udp, set up the socket. */ 347 if (udpflag) { 348 if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0) { 349 syslog(LOG_ERR, "can't create udp socket"); 350 exit(1); 351 } 352 inetaddr.sin_family = AF_INET; 353 inetaddr.sin_addr.s_addr = INADDR_ANY; 354 inetaddr.sin_port = htons(NFS_PORT); 355 inetaddr.sin_len = sizeof(inetaddr); 356 if (bind(sock, 357 (struct sockaddr *)&inetaddr, sizeof(inetaddr)) < 0) { 358 syslog(LOG_ERR, "can't bind udp addr"); 359 exit(1); 360 } 361 if (!pmap_set(RPCPROG_NFS, 2, IPPROTO_UDP, NFS_PORT) || 362 !pmap_set(RPCPROG_NFS, 3, IPPROTO_UDP, NFS_PORT)) { 363 syslog(LOG_ERR, "can't register with udp portmap"); 364 exit(1); 365 } 366 nfsdargs.sock = sock; 367 nfsdargs.name = NULL; 368 nfsdargs.namelen = 0; 369 if (nfssvc(NFSSVC_ADDSOCK, &nfsdargs) < 0) { 370 syslog(LOG_ERR, "can't Add UDP socket"); 371 exit(1); 372 } 373 (void)close(sock); 374 } 375 376 #ifdef ISO 377 /* If we are serving cltp, set up the socket. */ 378 if (cltpflag) { 379 if ((sock = socket(AF_ISO, SOCK_DGRAM, 0)) < 0) { 380 syslog(LOG_ERR, "can't create cltp socket"); 381 exit(1); 382 } 383 memset(&isoaddr, 0, sizeof(isoaddr)); 384 isoaddr.siso_family = AF_ISO; 385 isoaddr.siso_tlen = 2; 386 cp = TSEL(&isoaddr); 387 *cp++ = (NFS_PORT >> 8); 388 *cp = (NFS_PORT & 0xff); 389 isoaddr.siso_len = sizeof(isoaddr); 390 if (bind(sock, 391 (struct sockaddr *)&isoaddr, sizeof(isoaddr)) < 0) { 392 syslog(LOG_ERR, "can't bind cltp addr"); 393 exit(1); 394 } 395 #ifdef notyet 396 /* 397 * XXX 398 * Someday this should probably use "rpcbind", the son of 399 * portmap. 400 */ 401 if (!pmap_set(RPCPROG_NFS, NFS_VER2, IPPROTO_UDP, NFS_PORT)) { 402 syslog(LOG_ERR, "can't register with udp portmap"); 403 exit(1); 404 } 405 #endif /* notyet */ 406 nfsdargs.sock = sock; 407 nfsdargs.name = NULL; 408 nfsdargs.namelen = 0; 409 if (nfssvc(NFSSVC_ADDSOCK, &nfsdargs) < 0) { 410 syslog(LOG_ERR, "can't add UDP socket"); 411 exit(1); 412 } 413 close(sock); 414 } 415 #endif /* ISO */ 416 417 /* Now set up the master server socket waiting for tcp connections. */ 418 on = 1; 419 FD_ZERO(&sockbits); 420 connect_type_cnt = 0; 421 if (tcpflag) { 422 if ((tcpsock = socket(AF_INET, SOCK_STREAM, 0)) < 0) { 423 syslog(LOG_ERR, "can't create tcp socket"); 424 exit(1); 425 } 426 if (setsockopt(tcpsock, 427 SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0) 428 syslog(LOG_ERR, "setsockopt SO_REUSEADDR: %m"); 429 inetaddr.sin_family = AF_INET; 430 inetaddr.sin_addr.s_addr = INADDR_ANY; 431 inetaddr.sin_port = htons(NFS_PORT); 432 inetaddr.sin_len = sizeof(inetaddr); 433 if (bind(tcpsock, 434 (struct sockaddr *)&inetaddr, sizeof (inetaddr)) < 0) { 435 syslog(LOG_ERR, "can't bind tcp addr"); 436 exit(1); 437 } 438 if (listen(tcpsock, 5) < 0) { 439 syslog(LOG_ERR, "listen failed"); 440 exit(1); 441 } 442 if (!pmap_set(RPCPROG_NFS, 2, IPPROTO_TCP, NFS_PORT) || 443 !pmap_set(RPCPROG_NFS, 3, IPPROTO_TCP, NFS_PORT)) { 444 syslog(LOG_ERR, "can't register tcp with portmap"); 445 exit(1); 446 } 447 FD_SET(tcpsock, &sockbits); 448 maxsock = tcpsock; 449 connect_type_cnt++; 450 } 451 452 #ifdef notyet 453 /* Now set up the master server socket waiting for tp4 connections. */ 454 if (tp4flag) { 455 if ((tp4sock = socket(AF_ISO, SOCK_SEQPACKET, 0)) < 0) { 456 syslog(LOG_ERR, "can't create tp4 socket"); 457 exit(1); 458 } 459 if (setsockopt(tp4sock, 460 SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0) 461 syslog(LOG_ERR, "setsockopt SO_REUSEADDR: %m"); 462 memset(&isoaddr, 0, sizeof(isoaddr)); 463 isoaddr.siso_family = AF_ISO; 464 isoaddr.siso_tlen = 2; 465 cp = TSEL(&isoaddr); 466 *cp++ = (NFS_PORT >> 8); 467 *cp = (NFS_PORT & 0xff); 468 isoaddr.siso_len = sizeof(isoaddr); 469 if (bind(tp4sock, 470 (struct sockaddr *)&isoaddr, sizeof(isoaddr)) < 0) { 471 syslog(LOG_ERR, "can't bind tp4 addr"); 472 exit(1); 473 } 474 if (listen(tp4sock, 5) < 0) { 475 syslog(LOG_ERR, "listen failed"); 476 exit(1); 477 } 478 /* 479 * XXX 480 * Someday this should probably use "rpcbind", the son of 481 * portmap. 482 */ 483 if (!pmap_set(RPCPROG_NFS, NFS_VER2, IPPROTO_TCP, NFS_PORT)) { 484 syslog(LOG_ERR, "can't register tcp with portmap"); 485 exit(1); 486 } 487 FD_SET(tp4sock, &sockbits); 488 maxsock = tp4sock; 489 connect_type_cnt++; 490 } 491 492 /* Now set up the master server socket waiting for tpip connections. */ 493 if (tpipflag) { 494 if ((tpipsock = socket(AF_INET, SOCK_SEQPACKET, 0)) < 0) { 495 syslog(LOG_ERR, "can't create tpip socket"); 496 exit(1); 497 } 498 if (setsockopt(tpipsock, 499 SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0) 500 syslog(LOG_ERR, "setsockopt SO_REUSEADDR: %m"); 501 inetaddr.sin_family = AF_INET; 502 inetaddr.sin_addr.s_addr = INADDR_ANY; 503 inetaddr.sin_port = htons(NFS_PORT); 504 inetaddr.sin_len = sizeof(inetaddr); 505 if (bind(tpipsock, 506 (struct sockaddr *)&inetaddr, sizeof (inetaddr)) < 0) { 507 syslog(LOG_ERR, "can't bind tcp addr"); 508 exit(1); 509 } 510 if (listen(tpipsock, 5) < 0) { 511 syslog(LOG_ERR, "listen failed"); 512 exit(1); 513 } 514 /* 515 * XXX 516 * Someday this should probably use "rpcbind", the son of 517 * portmap. 518 */ 519 if (!pmap_set(RPCPROG_NFS, NFS_VER2, IPPROTO_TCP, NFS_PORT)) { 520 syslog(LOG_ERR, "can't register tcp with portmap"); 521 exit(1); 522 } 523 FD_SET(tpipsock, &sockbits); 524 maxsock = tpipsock; 525 connect_type_cnt++; 526 } 527 #endif /* notyet */ 528 529 if (connect_type_cnt == 0) 530 exit(0); 531 532 setproctitle("master"); 533 534 /* 535 * Loop forever accepting connections and passing the sockets 536 * into the kernel for the mounts. 537 */ 538 for (;;) { 539 ready = sockbits; 540 if (connect_type_cnt > 1) { 541 if (select(maxsock + 1, 542 &ready, NULL, NULL, NULL) < 1) { 543 syslog(LOG_ERR, "select failed: %m"); 544 exit(1); 545 } 546 } 547 if (tcpflag && FD_ISSET(tcpsock, &ready)) { 548 len = sizeof(inetpeer); 549 if ((msgsock = accept(tcpsock, 550 (struct sockaddr *)&inetpeer, &len)) < 0) { 551 syslog(LOG_ERR, "accept failed: %m"); 552 exit(1); 553 } 554 memset(inetpeer.sin_zero, 0, sizeof(inetpeer.sin_zero)); 555 if (setsockopt(msgsock, SOL_SOCKET, 556 SO_KEEPALIVE, (char *)&on, sizeof(on)) < 0) 557 syslog(LOG_ERR, 558 "setsockopt SO_KEEPALIVE: %m"); 559 nfsdargs.sock = msgsock; 560 nfsdargs.name = (caddr_t)&inetpeer; 561 nfsdargs.namelen = sizeof(inetpeer); 562 nfssvc(NFSSVC_ADDSOCK, &nfsdargs); 563 (void)close(msgsock); 564 } 565 #ifdef notyet 566 if (tp4flag && FD_ISSET(tp4sock, &ready)) { 567 len = sizeof(isopeer); 568 if ((msgsock = accept(tp4sock, 569 (struct sockaddr *)&isopeer, &len)) < 0) { 570 syslog(LOG_ERR, "accept failed: %m"); 571 exit(1); 572 } 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)&isopeer; 579 nfsdargs.namelen = len; 580 nfssvc(NFSSVC_ADDSOCK, &nfsdargs); 581 (void)close(msgsock); 582 } 583 if (tpipflag && FD_ISSET(tpipsock, &ready)) { 584 len = sizeof(inetpeer); 585 if ((msgsock = accept(tpipsock, 586 (struct sockaddr *)&inetpeer, &len)) < 0) { 587 syslog(LOG_ERR, "Accept failed: %m"); 588 exit(1); 589 } 590 if (setsockopt(msgsock, SOL_SOCKET, 591 SO_KEEPALIVE, (char *)&on, sizeof(on)) < 0) 592 syslog(LOG_ERR, "setsockopt SO_KEEPALIVE: %m"); 593 nfsdargs.sock = msgsock; 594 nfsdargs.name = (caddr_t)&inetpeer; 595 nfsdargs.namelen = len; 596 nfssvc(NFSSVC_ADDSOCK, &nfsdargs); 597 (void)close(msgsock); 598 } 599 #endif /* notyet */ 600 } 601 } 602 603 void 604 usage() 605 { 606 (void)fprintf(stderr, "usage: nfsd %s\n", USAGE); 607 exit(1); 608 } 609 610 void 611 nonfs(signo) 612 int signo; 613 { 614 615 syslog(LOG_ERR, "missing system call: NFS not available."); 616 } 617 618 void 619 reapchild(signo) 620 int signo; 621 { 622 623 while (wait3(NULL, WNOHANG, NULL) > 0); 624 } 625
Indexes created Tue Sep 23 14:10:03 GMT 2025