| 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 1.7 2004/12/18 21:43:39 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 | register 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 |