nfsd.c revision 1.23
1 /* $NetBSD: nfsd.c,v 1.23 1997/10/17 11:53:30 lukem 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 1.23 1997/10/17 11:53:30 lukem 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 int main __P((int, char **)); 114 void nonfs __P((int)); 115 void reapchild __P((int)); 116 void usage __P((void)); 117 118 /* 119 * Nfs server daemon mostly just a user context for nfssvc() 120 * 121 * 1 - do file descriptor and signal cleanup 122 * 2 - fork the nfsd(s) 123 * 3 - create server socket(s) 124 * 4 - register socket with portmap 125 * 126 * For connectionless protocols, just pass the socket into the kernel via. 127 * nfssvc(). 128 * For connection based sockets, loop doing accepts. When you get a new 129 * socket from accept, pass the msgsock into the kernel via. nfssvc(). 130 * The arguments are: 131 * -c - support iso cltp clients 132 * -r - reregister with portmapper 133 * -t - support tcp nfs clients 134 * -u - support udp nfs clients 135 * followed by "n" which is the number of nfsds' to fork off 136 */ 137 int 138 main(argc, argv) 139 int argc; 140 char *argv[]; 141 { 142 struct nfsd_args nfsdargs; 143 struct sockaddr_in inetaddr, inetpeer; 144 #ifdef ISO 145 struct sockaddr_iso isoaddr, isopeer; 146 #endif 147 fd_set ready, sockbits; 148 int ch, cltpflag, connect_type_cnt, i, len, maxsock, msgsock; 149 int nfsdcnt, nfssvc_flag, on, reregister, sock, tcpflag, tcpsock; 150 int tp4cnt, tp4flag, tpipcnt, tpipflag, udpflag; 151 #ifdef NFSKERB 152 struct group *grp; 153 struct passwd *pwd; 154 struct ucred *cr; 155 struct timeval ktv; 156 int tp4sock, tpipsock; 157 char *cp, **cpp; 158 #endif 159 160 #define MAXNFSDCNT 20 161 #define DEFNFSDCNT 4 162 nfsdcnt = DEFNFSDCNT; 163 cltpflag = reregister = tcpflag = tp4cnt = tp4flag = tpipcnt = 0; 164 tpipflag = udpflag = 0; 165 maxsock = tcpsock = 0; 166 #ifdef ISO 167 #define GETOPT "cn:rtu" 168 #define USAGE "[-crtu] [-n num_servers]" 169 #else 170 #define GETOPT "n:rtu" 171 #define USAGE "[-rtu] [-n num_servers]" 172 #endif 173 while ((ch = getopt(argc, argv, GETOPT)) != -1) 174 switch (ch) { 175 case 'n': 176 nfsdcnt = atoi(optarg); 177 if (nfsdcnt < 1 || nfsdcnt > MAXNFSDCNT) { 178 warnx("nfsd count %d; reset to %d", nfsdcnt, DEFNFSDCNT); 179 nfsdcnt = DEFNFSDCNT; 180 } 181 break; 182 case 'r': 183 reregister = 1; 184 break; 185 case 't': 186 tcpflag = 1; 187 break; 188 case 'u': 189 udpflag = 1; 190 break; 191 #ifdef ISO 192 case 'c': 193 cltpflag = 1; 194 break; 195 #ifdef notyet 196 case 'i': 197 tp4cnt = 1; 198 break; 199 case 'p': 200 tpipcnt = 1; 201 break; 202 #endif /* notyet */ 203 #endif /* ISO */ 204 default: 205 case '?': 206 usage(); 207 }; 208 argv += optind; 209 argc -= optind; 210 211 /* 212 * XXX 213 * Backward compatibility, trailing number is the count of daemons. 214 */ 215 if (argc > 1) 216 usage(); 217 if (argc == 1) { 218 nfsdcnt = atoi(argv[0]); 219 if (nfsdcnt < 1 || nfsdcnt > MAXNFSDCNT) { 220 warnx("nfsd count %d; reset to %d", nfsdcnt, DEFNFSDCNT); 221 nfsdcnt = DEFNFSDCNT; 222 } 223 } 224 225 if (debug == 0) { 226 daemon(0, 0); 227 (void)signal(SIGHUP, SIG_IGN); 228 (void)signal(SIGINT, SIG_IGN); 229 (void)signal(SIGQUIT, SIG_IGN); 230 (void)signal(SIGSYS, nonfs); 231 (void)signal(SIGTERM, SIG_IGN); 232 } 233 (void)signal(SIGCHLD, reapchild); 234 235 if (reregister) { 236 if (udpflag && 237 (!pmap_set(RPCPROG_NFS, 2, IPPROTO_UDP, NFS_PORT) || 238 !pmap_set(RPCPROG_NFS, 3, IPPROTO_UDP, NFS_PORT))) 239 err(1, "can't register with portmap for UDP."); 240 if (tcpflag && 241 (!pmap_set(RPCPROG_NFS, 2, IPPROTO_TCP, NFS_PORT) || 242 !pmap_set(RPCPROG_NFS, 3, IPPROTO_TCP, NFS_PORT))) 243 err(1, "can't register with portmap for TCP."); 244 exit(0); 245 } 246 openlog("nfsd:", LOG_PID, LOG_DAEMON); 247 248 for (i = 0; i < nfsdcnt; i++) { 249 switch (fork()) { 250 case -1: 251 syslog(LOG_ERR, "fork: %m"); 252 exit (1); 253 case 0: 254 break; 255 default: 256 continue; 257 } 258 259 setproctitle("server"); 260 nfssvc_flag = NFSSVC_NFSD; 261 nsd.nsd_nfsd = NULL; 262 #ifdef NFSKERB 263 if (sizeof (struct nfsrpc_fullverf) != RPCX_FULLVERF || 264 sizeof (struct nfsrpc_fullblock) != RPCX_FULLBLOCK) 265 syslog(LOG_ERR, "Yikes NFSKERB structs not packed!"); 266 nsd.nsd_authstr = (u_char *)&kt; 267 nsd.nsd_authlen = sizeof (kt); 268 nsd.nsd_verfstr = (u_char *)&kverf; 269 nsd.nsd_verflen = sizeof (kverf); 270 #endif 271 while (nfssvc(nfssvc_flag, &nsd) < 0) { 272 if (errno != ENEEDAUTH) { 273 syslog(LOG_ERR, "nfssvc: %m"); 274 exit(1); 275 } 276 nfssvc_flag = NFSSVC_NFSD | NFSSVC_AUTHINFAIL; 277 #ifdef NFSKERB 278 /* 279 * Get the Kerberos ticket out of the authenticator 280 * verify it and convert the principal name to a user 281 * name. The user name is then converted to a set of 282 * user credentials via the password and group file. 283 * Finally, decrypt the timestamp and validate it. 284 * For more info see the IETF Draft "Authentication 285 * in ONC RPC". 286 */ 287 kt.length = ntohl(kt.length); 288 if (gettimeofday(&ktv, (struct timezone *)0) == 0 && 289 kt.length > 0 && kt.length <= 290 (RPCAUTH_MAXSIZ - 3 * NFSX_UNSIGNED)) { 291 kin.w1 = NFS_KERBW1(kt); 292 kt.mbz = 0; 293 (void)strcpy(inst, "*"); 294 if (krb_rd_req(&kt, NFS_KERBSRV, 295 inst, nsd.nsd_haddr, &kauth, "") == RD_AP_OK && 296 krb_kntoln(&kauth, lnam) == KSUCCESS && 297 (pwd = getpwnam(lnam)) != NULL) { 298 cr = &nsd.nsd_cr; 299 cr->cr_uid = pwd->pw_uid; 300 cr->cr_groups[0] = pwd->pw_gid; 301 cr->cr_ngroups = 1; 302 setgrent(); 303 while ((grp = getgrent()) != NULL) { 304 if (grp->gr_gid == cr->cr_groups[0]) 305 continue; 306 for (cpp = grp->gr_mem; 307 *cpp != NULL; ++cpp) 308 if (!strcmp(*cpp, lnam)) 309 break; 310 if (*cpp == NULL) 311 continue; 312 cr->cr_groups[cr->cr_ngroups++] 313 = grp->gr_gid; 314 if (cr->cr_ngroups == NGROUPS) 315 break; 316 } 317 endgrent(); 318 319 /* 320 * Get the timestamp verifier out of the 321 * authenticator and verifier strings. 322 */ 323 kin.t1 = kverf.t1; 324 kin.t2 = kverf.t2; 325 kin.w2 = kverf.w2; 326 bzero((caddr_t)kivec, sizeof (kivec)); 327 bcopy((caddr_t)kauth.session, 328 (caddr_t)nsd.nsd_key,sizeof(kauth.session)); 329 330 /* 331 * Decrypt the timestamp verifier in CBC mode. 332 */ 333 XXX 334 335 /* 336 * Validate the timestamp verifier, to 337 * check that the session key is ok. 338 */ 339 nsd.nsd_timestamp.tv_sec = ntohl(kout.t1); 340 nsd.nsd_timestamp.tv_usec = ntohl(kout.t2); 341 nsd.nsd_ttl = ntohl(kout.w1); 342 if ((nsd.nsd_ttl - 1) == ntohl(kout.w2)) 343 nfssvc_flag = NFSSVC_NFSD | NFSSVC_AUTHIN; 344 } 345 #endif /* NFSKERB */ 346 } 347 exit(0); 348 } 349 350 /* If we are serving udp, set up the socket. */ 351 if (udpflag) { 352 if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0) { 353 syslog(LOG_ERR, "can't create udp socket"); 354 exit(1); 355 } 356 inetaddr.sin_family = AF_INET; 357 inetaddr.sin_addr.s_addr = INADDR_ANY; 358 inetaddr.sin_port = htons(NFS_PORT); 359 inetaddr.sin_len = sizeof(inetaddr); 360 memset(inetaddr.sin_zero, 0, sizeof(inetaddr.sin_zero)); 361 if (bind(sock, 362 (struct sockaddr *)&inetaddr, sizeof(inetaddr)) < 0) { 363 syslog(LOG_ERR, "can't bind udp addr"); 364 exit(1); 365 } 366 if (!pmap_set(RPCPROG_NFS, 2, IPPROTO_UDP, NFS_PORT) || 367 !pmap_set(RPCPROG_NFS, 3, IPPROTO_UDP, NFS_PORT)) { 368 syslog(LOG_ERR, "can't register with udp portmap"); 369 exit(1); 370 } 371 nfsdargs.sock = sock; 372 nfsdargs.name = NULL; 373 nfsdargs.namelen = 0; 374 if (nfssvc(NFSSVC_ADDSOCK, &nfsdargs) < 0) { 375 syslog(LOG_ERR, "can't Add UDP socket"); 376 exit(1); 377 } 378 (void)close(sock); 379 } 380 381 #ifdef ISO 382 /* If we are serving cltp, set up the socket. */ 383 if (cltpflag) { 384 if ((sock = socket(AF_ISO, SOCK_DGRAM, 0)) < 0) { 385 syslog(LOG_ERR, "can't create cltp socket"); 386 exit(1); 387 } 388 memset(&isoaddr, 0, sizeof(isoaddr)); 389 isoaddr.siso_family = AF_ISO; 390 isoaddr.siso_tlen = 2; 391 cp = TSEL(&isoaddr); 392 *cp++ = (NFS_PORT >> 8); 393 *cp = (NFS_PORT & 0xff); 394 isoaddr.siso_len = sizeof(isoaddr); 395 if (bind(sock, 396 (struct sockaddr *)&isoaddr, sizeof(isoaddr)) < 0) { 397 syslog(LOG_ERR, "can't bind cltp addr"); 398 exit(1); 399 } 400 #ifdef notyet 401 /* 402 * XXX 403 * Someday this should probably use "rpcbind", the son of 404 * portmap. 405 */ 406 if (!pmap_set(RPCPROG_NFS, NFS_VER2, IPPROTO_UDP, NFS_PORT)) { 407 syslog(LOG_ERR, "can't register with udp portmap"); 408 exit(1); 409 } 410 #endif /* notyet */ 411 nfsdargs.sock = sock; 412 nfsdargs.name = NULL; 413 nfsdargs.namelen = 0; 414 if (nfssvc(NFSSVC_ADDSOCK, &nfsdargs) < 0) { 415 syslog(LOG_ERR, "can't add UDP socket"); 416 exit(1); 417 } 418 close(sock); 419 } 420 #endif /* ISO */ 421 422 /* Now set up the master server socket waiting for tcp connections. */ 423 on = 1; 424 FD_ZERO(&sockbits); 425 connect_type_cnt = 0; 426 if (tcpflag) { 427 if ((tcpsock = socket(AF_INET, SOCK_STREAM, 0)) < 0) { 428 syslog(LOG_ERR, "can't create tcp socket"); 429 exit(1); 430 } 431 if (setsockopt(tcpsock, 432 SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0) 433 syslog(LOG_ERR, "setsockopt SO_REUSEADDR: %m"); 434 inetaddr.sin_family = AF_INET; 435 inetaddr.sin_addr.s_addr = INADDR_ANY; 436 inetaddr.sin_port = htons(NFS_PORT); 437 inetaddr.sin_len = sizeof(inetaddr); 438 memset(inetaddr.sin_zero, 0, sizeof(inetaddr.sin_zero)); 439 if (bind(tcpsock, 440 (struct sockaddr *)&inetaddr, sizeof (inetaddr)) < 0) { 441 syslog(LOG_ERR, "can't bind tcp addr"); 442 exit(1); 443 } 444 if (listen(tcpsock, 5) < 0) { 445 syslog(LOG_ERR, "listen failed"); 446 exit(1); 447 } 448 if (!pmap_set(RPCPROG_NFS, 2, IPPROTO_TCP, NFS_PORT) || 449 !pmap_set(RPCPROG_NFS, 3, IPPROTO_TCP, NFS_PORT)) { 450 syslog(LOG_ERR, "can't register tcp with portmap"); 451 exit(1); 452 } 453 FD_SET(tcpsock, &sockbits); 454 maxsock = tcpsock; 455 connect_type_cnt++; 456 } 457 458 #ifdef notyet 459 /* Now set up the master server socket waiting for tp4 connections. */ 460 if (tp4flag) { 461 if ((tp4sock = socket(AF_ISO, SOCK_SEQPACKET, 0)) < 0) { 462 syslog(LOG_ERR, "can't create tp4 socket"); 463 exit(1); 464 } 465 if (setsockopt(tp4sock, 466 SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0) 467 syslog(LOG_ERR, "setsockopt SO_REUSEADDR: %m"); 468 memset(&isoaddr, 0, sizeof(isoaddr)); 469 isoaddr.siso_family = AF_ISO; 470 isoaddr.siso_tlen = 2; 471 cp = TSEL(&isoaddr); 472 *cp++ = (NFS_PORT >> 8); 473 *cp = (NFS_PORT & 0xff); 474 isoaddr.siso_len = sizeof(isoaddr); 475 if (bind(tp4sock, 476 (struct sockaddr *)&isoaddr, sizeof(isoaddr)) < 0) { 477 syslog(LOG_ERR, "can't bind tp4 addr"); 478 exit(1); 479 } 480 if (listen(tp4sock, 5) < 0) { 481 syslog(LOG_ERR, "listen failed"); 482 exit(1); 483 } 484 /* 485 * XXX 486 * Someday this should probably use "rpcbind", the son of 487 * portmap. 488 */ 489 if (!pmap_set(RPCPROG_NFS, NFS_VER2, IPPROTO_TCP, NFS_PORT)) { 490 syslog(LOG_ERR, "can't register tcp with portmap"); 491 exit(1); 492 } 493 FD_SET(tp4sock, &sockbits); 494 maxsock = tp4sock; 495 connect_type_cnt++; 496 } 497 498 /* Now set up the master server socket waiting for tpip connections. */ 499 if (tpipflag) { 500 if ((tpipsock = socket(AF_INET, SOCK_SEQPACKET, 0)) < 0) { 501 syslog(LOG_ERR, "can't create tpip socket"); 502 exit(1); 503 } 504 if (setsockopt(tpipsock, 505 SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0) 506 syslog(LOG_ERR, "setsockopt SO_REUSEADDR: %m"); 507 inetaddr.sin_family = AF_INET; 508 inetaddr.sin_addr.s_addr = INADDR_ANY; 509 inetaddr.sin_port = htons(NFS_PORT); 510 inetaddr.sin_len = sizeof(inetaddr); 511 memset(inetaddr.sin_zero, 0, sizeof(inetaddr.sin_zero)); 512 if (bind(tpipsock, 513 (struct sockaddr *)&inetaddr, sizeof (inetaddr)) < 0) { 514 syslog(LOG_ERR, "can't bind tcp addr"); 515 exit(1); 516 } 517 if (listen(tpipsock, 5) < 0) { 518 syslog(LOG_ERR, "listen failed"); 519 exit(1); 520 } 521 /* 522 * XXX 523 * Someday this should probably use "rpcbind", the son of 524 * portmap. 525 */ 526 if (!pmap_set(RPCPROG_NFS, NFS_VER2, IPPROTO_TCP, NFS_PORT)) { 527 syslog(LOG_ERR, "can't register tcp with portmap"); 528 exit(1); 529 } 530 FD_SET(tpipsock, &sockbits); 531 maxsock = tpipsock; 532 connect_type_cnt++; 533 } 534 #endif /* notyet */ 535 536 if (connect_type_cnt == 0) 537 exit(0); 538 539 setproctitle("master"); 540 541 /* 542 * Loop forever accepting connections and passing the sockets 543 * into the kernel for the mounts. 544 */ 545 for (;;) { 546 ready = sockbits; 547 if (connect_type_cnt > 1) { 548 if (select(maxsock + 1, 549 &ready, NULL, NULL, NULL) < 1) { 550 syslog(LOG_ERR, "select failed: %m"); 551 exit(1); 552 } 553 } 554 if (tcpflag && FD_ISSET(tcpsock, &ready)) { 555 len = sizeof(inetpeer); 556 if ((msgsock = accept(tcpsock, 557 (struct sockaddr *)&inetpeer, &len)) < 0) { 558 syslog(LOG_ERR, "accept failed: %m"); 559 exit(1); 560 } 561 memset(inetpeer.sin_zero, 0, sizeof(inetpeer.sin_zero)); 562 if (setsockopt(msgsock, SOL_SOCKET, 563 SO_KEEPALIVE, (char *)&on, sizeof(on)) < 0) 564 syslog(LOG_ERR, 565 "setsockopt SO_KEEPALIVE: %m"); 566 nfsdargs.sock = msgsock; 567 nfsdargs.name = (caddr_t)&inetpeer; 568 nfsdargs.namelen = sizeof(inetpeer); 569 nfssvc(NFSSVC_ADDSOCK, &nfsdargs); 570 (void)close(msgsock); 571 } 572 #ifdef notyet 573 if (tp4flag && FD_ISSET(tp4sock, &ready)) { 574 len = sizeof(isopeer); 575 if ((msgsock = accept(tp4sock, 576 (struct sockaddr *)&isopeer, &len)) < 0) { 577 syslog(LOG_ERR, "accept failed: %m"); 578 exit(1); 579 } 580 if (setsockopt(msgsock, SOL_SOCKET, 581 SO_KEEPALIVE, (char *)&on, sizeof(on)) < 0) 582 syslog(LOG_ERR, 583 "setsockopt SO_KEEPALIVE: %m"); 584 nfsdargs.sock = msgsock; 585 nfsdargs.name = (caddr_t)&isopeer; 586 nfsdargs.namelen = len; 587 nfssvc(NFSSVC_ADDSOCK, &nfsdargs); 588 (void)close(msgsock); 589 } 590 if (tpipflag && FD_ISSET(tpipsock, &ready)) { 591 len = sizeof(inetpeer); 592 if ((msgsock = accept(tpipsock, 593 (struct sockaddr *)&inetpeer, &len)) < 0) { 594 syslog(LOG_ERR, "Accept failed: %m"); 595 exit(1); 596 } 597 if (setsockopt(msgsock, SOL_SOCKET, 598 SO_KEEPALIVE, (char *)&on, sizeof(on)) < 0) 599 syslog(LOG_ERR, "setsockopt SO_KEEPALIVE: %m"); 600 nfsdargs.sock = msgsock; 601 nfsdargs.name = (caddr_t)&inetpeer; 602 nfsdargs.namelen = len; 603 nfssvc(NFSSVC_ADDSOCK, &nfsdargs); 604 (void)close(msgsock); 605 } 606 #endif /* notyet */ 607 } 608 } 609 610 void 611 usage() 612 { 613 (void)fprintf(stderr, "usage: nfsd %s\n", USAGE); 614 exit(1); 615 } 616 617 void 618 nonfs(signo) 619 int signo; 620 { 621 622 syslog(LOG_ERR, "missing system call: NFS not available."); 623 } 624 625 void 626 reapchild(signo) 627 int signo; 628 { 629 630 while (wait3(NULL, WNOHANG, NULL) > 0); 631 } 632
Indexes created Tue Sep 23 20:09:58 GMT 2025