1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 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. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #ifndef lint 36 static const char copyright[] = 37 "@(#) Copyright (c) 1989, 1993, 1994\n\ 38 The Regents of the University of California. All rights reserved.\n"; 39 #endif /* not lint */ 40 41 #ifndef lint 42 #if 0 43 static char sccsid[] = "@(#)nfsd.c 8.9 (Berkeley) 3/29/95"; 44 #endif 45 static const char rcsid[] = 46 "$FreeBSD$"; 47 #endif /* not lint */ 48 49 #include <sys/param.h> 50 #include <sys/syslog.h> 51 #include <sys/wait.h> 52 #include <sys/mount.h> 53 #include <sys/fcntl.h> 54 #include <sys/linker.h> 55 #include <sys/module.h> 56 #include <sys/types.h> 57 #include <sys/stat.h> 58 #include <sys/sysctl.h> 59 #include <sys/ucred.h> 60 61 #include <rpc/rpc.h> 62 #include <rpc/pmap_clnt.h> 63 #include <rpcsvc/nfs_prot.h> 64 65 #include <netdb.h> 66 #include <arpa/inet.h> 67 #include <nfs/nfssvc.h> 68 69 #include <fs/nfs/nfsproto.h> 70 #include <fs/nfs/nfskpiport.h> 71 #include <fs/nfs/nfs.h> 72 73 #include <err.h> 74 #include <errno.h> 75 #include <signal.h> 76 #include <stdio.h> 77 #include <stdlib.h> 78 #include <string.h> 79 #include <unistd.h> 80 #include <sysexits.h> 81 82 #include <getopt.h> 83 84 static int debug = 0; 85 86 #define NFSD_STABLERESTART "/var/db/nfs-stablerestart" 87 #define NFSD_STABLEBACKUP "/var/db/nfs-stablerestart.bak" 88 #define MAXNFSDCNT 256 89 #define DEFNFSDCNT 4 90 #define NFS_VER2 2 91 #define NFS_VER3 3 92 #define NFS_VER4 4 93 static pid_t children[MAXNFSDCNT]; /* PIDs of children */ 94 static pid_t masterpid; /* PID of master/parent */ 95 static int nfsdcnt; /* number of children */ 96 static int nfsdcnt_set; 97 static int minthreads; 98 static int maxthreads; 99 static int nfssvc_nfsd; /* Set to correct NFSSVC_xxx flag */ 100 static int stablefd = -1; /* Fd for the stable restart file */ 101 static int backupfd; /* Fd for the backup stable restart file */ 102 static const char *getopt_shortopts; 103 static const char *getopt_usage; 104 105 static int minthreads_set; 106 static int maxthreads_set; 107 108 static struct option longopts[] = { 109 { "debug", no_argument, &debug, 1 }, 110 { "minthreads", required_argument, &minthreads_set, 1 }, 111 { "maxthreads", required_argument, &maxthreads_set, 1 }, 112 { "pnfs", required_argument, NULL, 'p' }, 113 { "mirror", required_argument, NULL, 'm' }, 114 { NULL, 0, NULL, 0} 115 }; 116 117 static void cleanup(int); 118 static void child_cleanup(int); 119 static void killchildren(void); 120 static void nfsd_exit(int); 121 static void nonfs(int); 122 static void reapchild(int); 123 static int setbindhost(struct addrinfo **ia, const char *bindhost, 124 struct addrinfo hints); 125 static void start_server(int, struct nfsd_nfsd_args *); 126 static void unregistration(void); 127 static void usage(void); 128 static void open_stable(int *, int *); 129 static void copy_stable(int, int); 130 static void backup_stable(int); 131 static void set_nfsdcnt(int); 132 static void parse_dsserver(const char *, struct nfsd_nfsd_args *); 133 134 /* 135 * Nfs server daemon mostly just a user context for nfssvc() 136 * 137 * 1 - do file descriptor and signal cleanup 138 * 2 - fork the nfsd(s) 139 * 3 - create server socket(s) 140 * 4 - register socket with rpcbind 141 * 142 * For connectionless protocols, just pass the socket into the kernel via. 143 * nfssvc(). 144 * For connection based sockets, loop doing accepts. When you get a new 145 * socket from accept, pass the msgsock into the kernel via. nfssvc(). 146 * The arguments are: 147 * -r - reregister with rpcbind 148 * -d - unregister with rpcbind 149 * -t - support tcp nfs clients 150 * -u - support udp nfs clients 151 * -e - forces it to run a server that supports nfsv4 152 * -p - enable a pNFS service 153 * -m - set the mirroring level for a pNFS service 154 * followed by "n" which is the number of nfsds' to fork off 155 */ 156 int 157 main(int argc, char **argv) 158 { 159 struct nfsd_addsock_args addsockargs; 160 struct addrinfo *ai_udp, *ai_tcp, *ai_udp6, *ai_tcp6, hints; 161 struct netconfig *nconf_udp, *nconf_tcp, *nconf_udp6, *nconf_tcp6; 162 struct netbuf nb_udp, nb_tcp, nb_udp6, nb_tcp6; 163 struct sockaddr_in inetpeer; 164 struct sockaddr_in6 inet6peer; 165 fd_set ready, sockbits; 166 fd_set v4bits, v6bits; 167 int ch, connect_type_cnt, i, maxsock, msgsock; 168 socklen_t len; 169 int on = 1, unregister, reregister, sock; 170 int tcp6sock, ip6flag, tcpflag, tcpsock; 171 int udpflag, ecode, error, s; 172 int bindhostc, bindanyflag, rpcbreg, rpcbregcnt; 173 int nfssvc_addsock; 174 int longindex = 0; 175 int nfs_minvers = NFS_VER2; 176 size_t nfs_minvers_size; 177 const char *lopt; 178 char **bindhost = NULL; 179 pid_t pid; 180 struct nfsd_nfsd_args nfsdargs; 181 182 nfsdargs.mirrorcnt = 1; 183 nfsdcnt = DEFNFSDCNT; 184 unregister = reregister = tcpflag = maxsock = 0; 185 bindanyflag = udpflag = connect_type_cnt = bindhostc = 0; 186 getopt_shortopts = "ah:n:rdtuep:m:"; 187 getopt_usage = 188 "usage:\n" 189 " nfsd [-ardtue] [-h bindip]\n" 190 " [-n numservers] [--minthreads #] [--maxthreads #]\n" 191 " [-p/--pnfs dsserver0:/dsserver0-mounted-on-dir,...," 192 "dsserverN:/dsserverN-mounted-on-dir] [-m mirrorlevel]\n"; 193 while ((ch = getopt_long(argc, argv, getopt_shortopts, longopts, 194 &longindex)) != -1) 195 switch (ch) { 196 case 'a': 197 bindanyflag = 1; 198 break; 199 case 'n': 200 set_nfsdcnt(atoi(optarg)); 201 break; 202 case 'h': 203 bindhostc++; 204 bindhost = realloc(bindhost,sizeof(char *)*bindhostc); 205 if (bindhost == NULL) 206 errx(1, "Out of memory"); 207 bindhost[bindhostc-1] = strdup(optarg); 208 if (bindhost[bindhostc-1] == NULL) 209 errx(1, "Out of memory"); 210 break; 211 case 'r': 212 reregister = 1; 213 break; 214 case 'd': 215 unregister = 1; 216 break; 217 case 't': 218 tcpflag = 1; 219 break; 220 case 'u': 221 udpflag = 1; 222 break; 223 case 'e': 224 /* now a no-op, since this is the default */ 225 break; 226 case 'p': 227 /* Parse out the DS server host names and mount pts. */ 228 parse_dsserver(optarg, &nfsdargs); 229 break; 230 case 'm': 231 /* Set the mirror level for a pNFS service. */ 232 i = atoi(optarg); 233 if (i < 2 || i > NFSDEV_MAXMIRRORS) 234 errx(1, "Mirror level out of range 2<-->%d", 235 NFSDEV_MAXMIRRORS); 236 nfsdargs.mirrorcnt = i; 237 break; 238 case 0: 239 lopt = longopts[longindex].name; 240 if (!strcmp(lopt, "minthreads")) { 241 minthreads = atoi(optarg); 242 } else if (!strcmp(lopt, "maxthreads")) { 243 maxthreads = atoi(optarg); 244 } 245 break; 246 default: 247 case '?': 248 usage(); 249 } 250 if (!tcpflag && !udpflag) 251 udpflag = 1; 252 argv += optind; 253 argc -= optind; 254 if (minthreads_set && maxthreads_set && minthreads > maxthreads) 255 errx(EX_USAGE, 256 "error: minthreads(%d) can't be greater than " 257 "maxthreads(%d)", minthreads, maxthreads); 258 259 /* 260 * XXX 261 * Backward compatibility, trailing number is the count of daemons. 262 */ 263 if (argc > 1) 264 usage(); 265 if (argc == 1) 266 set_nfsdcnt(atoi(argv[0])); 267 268 /* 269 * Unless the "-o" option was specified, try and run "nfsd". 270 * If "-o" was specified, try and run "nfsserver". 271 */ 272 if (modfind("nfsd") < 0) { 273 /* Not present in kernel, try loading it */ 274 if (kldload("nfsd") < 0 || modfind("nfsd") < 0) 275 errx(1, "NFS server is not available"); 276 } 277 278 ip6flag = 1; 279 s = socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP); 280 if (s == -1) { 281 if (errno != EPROTONOSUPPORT && errno != EAFNOSUPPORT) 282 err(1, "socket"); 283 ip6flag = 0; 284 } else if (getnetconfigent("udp6") == NULL || 285 getnetconfigent("tcp6") == NULL) { 286 ip6flag = 0; 287 } 288 if (s != -1) 289 close(s); 290 291 if (bindhostc == 0 || bindanyflag) { 292 bindhostc++; 293 bindhost = realloc(bindhost,sizeof(char *)*bindhostc); 294 if (bindhost == NULL) 295 errx(1, "Out of memory"); 296 bindhost[bindhostc-1] = strdup("*"); 297 if (bindhost[bindhostc-1] == NULL) 298 errx(1, "Out of memory"); 299 } 300 301 nfs_minvers_size = sizeof(nfs_minvers); 302 error = sysctlbyname("vfs.nfsd.server_min_nfsvers", &nfs_minvers, 303 &nfs_minvers_size, NULL, 0); 304 if (error != 0 || nfs_minvers < NFS_VER2 || nfs_minvers > NFS_VER4) { 305 warnx("sysctlbyname(vfs.nfsd.server_min_nfsvers) failed," 306 " defaulting to NFSv2"); 307 nfs_minvers = NFS_VER2; 308 } 309 310 if (unregister) { 311 unregistration(); 312 exit (0); 313 } 314 if (reregister) { 315 if (udpflag) { 316 memset(&hints, 0, sizeof hints); 317 hints.ai_flags = AI_PASSIVE; 318 hints.ai_family = AF_INET; 319 hints.ai_socktype = SOCK_DGRAM; 320 hints.ai_protocol = IPPROTO_UDP; 321 ecode = getaddrinfo(NULL, "nfs", &hints, &ai_udp); 322 if (ecode != 0) 323 err(1, "getaddrinfo udp: %s", gai_strerror(ecode)); 324 nconf_udp = getnetconfigent("udp"); 325 if (nconf_udp == NULL) 326 err(1, "getnetconfigent udp failed"); 327 nb_udp.buf = ai_udp->ai_addr; 328 nb_udp.len = nb_udp.maxlen = ai_udp->ai_addrlen; 329 if (nfs_minvers == NFS_VER2) 330 if (!rpcb_set(NFS_PROGRAM, 2, nconf_udp, 331 &nb_udp)) 332 err(1, "rpcb_set udp failed"); 333 if (nfs_minvers <= NFS_VER3) 334 if (!rpcb_set(NFS_PROGRAM, 3, nconf_udp, 335 &nb_udp)) 336 err(1, "rpcb_set udp failed"); 337 freeaddrinfo(ai_udp); 338 } 339 if (udpflag && ip6flag) { 340 memset(&hints, 0, sizeof hints); 341 hints.ai_flags = AI_PASSIVE; 342 hints.ai_family = AF_INET6; 343 hints.ai_socktype = SOCK_DGRAM; 344 hints.ai_protocol = IPPROTO_UDP; 345 ecode = getaddrinfo(NULL, "nfs", &hints, &ai_udp6); 346 if (ecode != 0) 347 err(1, "getaddrinfo udp6: %s", gai_strerror(ecode)); 348 nconf_udp6 = getnetconfigent("udp6"); 349 if (nconf_udp6 == NULL) 350 err(1, "getnetconfigent udp6 failed"); 351 nb_udp6.buf = ai_udp6->ai_addr; 352 nb_udp6.len = nb_udp6.maxlen = ai_udp6->ai_addrlen; 353 if (nfs_minvers == NFS_VER2) 354 if (!rpcb_set(NFS_PROGRAM, 2, nconf_udp6, 355 &nb_udp6)) 356 err(1, "rpcb_set udp6 failed"); 357 if (nfs_minvers <= NFS_VER3) 358 if (!rpcb_set(NFS_PROGRAM, 3, nconf_udp6, 359 &nb_udp6)) 360 err(1, "rpcb_set udp6 failed"); 361 freeaddrinfo(ai_udp6); 362 } 363 if (tcpflag) { 364 memset(&hints, 0, sizeof hints); 365 hints.ai_flags = AI_PASSIVE; 366 hints.ai_family = AF_INET; 367 hints.ai_socktype = SOCK_STREAM; 368 hints.ai_protocol = IPPROTO_TCP; 369 ecode = getaddrinfo(NULL, "nfs", &hints, &ai_tcp); 370 if (ecode != 0) 371 err(1, "getaddrinfo tcp: %s", gai_strerror(ecode)); 372 nconf_tcp = getnetconfigent("tcp"); 373 if (nconf_tcp == NULL) 374 err(1, "getnetconfigent tcp failed"); 375 nb_tcp.buf = ai_tcp->ai_addr; 376 nb_tcp.len = nb_tcp.maxlen = ai_tcp->ai_addrlen; 377 if (nfs_minvers == NFS_VER2) 378 if (!rpcb_set(NFS_PROGRAM, 2, nconf_tcp, 379 &nb_tcp)) 380 err(1, "rpcb_set tcp failed"); 381 if (nfs_minvers <= NFS_VER3) 382 if (!rpcb_set(NFS_PROGRAM, 3, nconf_tcp, 383 &nb_tcp)) 384 err(1, "rpcb_set tcp failed"); 385 freeaddrinfo(ai_tcp); 386 } 387 if (tcpflag && ip6flag) { 388 memset(&hints, 0, sizeof hints); 389 hints.ai_flags = AI_PASSIVE; 390 hints.ai_family = AF_INET6; 391 hints.ai_socktype = SOCK_STREAM; 392 hints.ai_protocol = IPPROTO_TCP; 393 ecode = getaddrinfo(NULL, "nfs", &hints, &ai_tcp6); 394 if (ecode != 0) 395 err(1, "getaddrinfo tcp6: %s", gai_strerror(ecode)); 396 nconf_tcp6 = getnetconfigent("tcp6"); 397 if (nconf_tcp6 == NULL) 398 err(1, "getnetconfigent tcp6 failed"); 399 nb_tcp6.buf = ai_tcp6->ai_addr; 400 nb_tcp6.len = nb_tcp6.maxlen = ai_tcp6->ai_addrlen; 401 if (nfs_minvers == NFS_VER2) 402 if (!rpcb_set(NFS_PROGRAM, 2, nconf_tcp6, 403 &nb_tcp6)) 404 err(1, "rpcb_set tcp6 failed"); 405 if (nfs_minvers <= NFS_VER3) 406 if (!rpcb_set(NFS_PROGRAM, 3, nconf_tcp6, 407 &nb_tcp6)) 408 err(1, "rpcb_set tcp6 failed"); 409 freeaddrinfo(ai_tcp6); 410 } 411 exit (0); 412 } 413 if (debug == 0) { 414 daemon(0, 0); 415 (void)signal(SIGHUP, SIG_IGN); 416 (void)signal(SIGINT, SIG_IGN); 417 /* 418 * nfsd sits in the kernel most of the time. It needs 419 * to ignore SIGTERM/SIGQUIT in order to stay alive as long 420 * as possible during a shutdown, otherwise loopback 421 * mounts will not be able to unmount. 422 */ 423 (void)signal(SIGTERM, SIG_IGN); 424 (void)signal(SIGQUIT, SIG_IGN); 425 } 426 (void)signal(SIGSYS, nonfs); 427 (void)signal(SIGCHLD, reapchild); 428 (void)signal(SIGUSR2, backup_stable); 429 430 openlog("nfsd", LOG_PID | (debug ? LOG_PERROR : 0), LOG_DAEMON); 431 432 /* 433 * For V4, we open the stablerestart file and call nfssvc() 434 * to get it loaded. This is done before the daemons do the 435 * regular nfssvc() call to service NFS requests. 436 * (This way the file remains open until the last nfsd is killed 437 * off.) 438 * It and the backup copy will be created as empty files 439 * the first time this nfsd is started and should never be 440 * deleted/replaced if at all possible. It should live on a 441 * local, non-volatile storage device that does not do hardware 442 * level write-back caching. (See SCSI doc for more information 443 * on how to prevent write-back caching on SCSI disks.) 444 */ 445 open_stable(&stablefd, &backupfd); 446 if (stablefd < 0) { 447 syslog(LOG_ERR, "Can't open %s: %m\n", NFSD_STABLERESTART); 448 exit(1); 449 } 450 /* This system call will fail for old kernels, but that's ok. */ 451 nfssvc(NFSSVC_BACKUPSTABLE, NULL); 452 if (nfssvc(NFSSVC_STABLERESTART, (caddr_t)&stablefd) < 0) { 453 syslog(LOG_ERR, "Can't read stable storage file: %m\n"); 454 exit(1); 455 } 456 nfssvc_addsock = NFSSVC_NFSDADDSOCK; 457 nfssvc_nfsd = NFSSVC_NFSDNFSD | NFSSVC_NEWSTRUCT; 458 459 if (tcpflag) { 460 /* 461 * For TCP mode, we fork once to start the first 462 * kernel nfsd thread. The kernel will add more 463 * threads as needed. 464 */ 465 masterpid = getpid(); 466 pid = fork(); 467 if (pid == -1) { 468 syslog(LOG_ERR, "fork: %m"); 469 nfsd_exit(1); 470 } 471 if (pid) { 472 children[0] = pid; 473 } else { 474 (void)signal(SIGUSR1, child_cleanup); 475 setproctitle("server"); 476 start_server(0, &nfsdargs); 477 } 478 } 479 480 (void)signal(SIGUSR1, cleanup); 481 FD_ZERO(&v4bits); 482 FD_ZERO(&v6bits); 483 FD_ZERO(&sockbits); 484 485 rpcbregcnt = 0; 486 /* Set up the socket for udp and rpcb register it. */ 487 if (udpflag) { 488 rpcbreg = 0; 489 for (i = 0; i < bindhostc; i++) { 490 memset(&hints, 0, sizeof hints); 491 hints.ai_flags = AI_PASSIVE; 492 hints.ai_family = AF_INET; 493 hints.ai_socktype = SOCK_DGRAM; 494 hints.ai_protocol = IPPROTO_UDP; 495 if (setbindhost(&ai_udp, bindhost[i], hints) == 0) { 496 rpcbreg = 1; 497 rpcbregcnt++; 498 if ((sock = socket(ai_udp->ai_family, 499 ai_udp->ai_socktype, 500 ai_udp->ai_protocol)) < 0) { 501 syslog(LOG_ERR, 502 "can't create udp socket"); 503 nfsd_exit(1); 504 } 505 if (bind(sock, ai_udp->ai_addr, 506 ai_udp->ai_addrlen) < 0) { 507 syslog(LOG_ERR, 508 "can't bind udp addr %s: %m", 509 bindhost[i]); 510 nfsd_exit(1); 511 } 512 freeaddrinfo(ai_udp); 513 addsockargs.sock = sock; 514 addsockargs.name = NULL; 515 addsockargs.namelen = 0; 516 if (nfssvc(nfssvc_addsock, &addsockargs) < 0) { 517 syslog(LOG_ERR, "can't Add UDP socket"); 518 nfsd_exit(1); 519 } 520 (void)close(sock); 521 } 522 } 523 if (rpcbreg == 1) { 524 memset(&hints, 0, sizeof hints); 525 hints.ai_flags = AI_PASSIVE; 526 hints.ai_family = AF_INET; 527 hints.ai_socktype = SOCK_DGRAM; 528 hints.ai_protocol = IPPROTO_UDP; 529 ecode = getaddrinfo(NULL, "nfs", &hints, &ai_udp); 530 if (ecode != 0) { 531 syslog(LOG_ERR, "getaddrinfo udp: %s", 532 gai_strerror(ecode)); 533 nfsd_exit(1); 534 } 535 nconf_udp = getnetconfigent("udp"); 536 if (nconf_udp == NULL) 537 err(1, "getnetconfigent udp failed"); 538 nb_udp.buf = ai_udp->ai_addr; 539 nb_udp.len = nb_udp.maxlen = ai_udp->ai_addrlen; 540 if (nfs_minvers == NFS_VER2) 541 if (!rpcb_set(NFS_PROGRAM, 2, nconf_udp, 542 &nb_udp)) 543 err(1, "rpcb_set udp failed"); 544 if (nfs_minvers <= NFS_VER3) 545 if (!rpcb_set(NFS_PROGRAM, 3, nconf_udp, 546 &nb_udp)) 547 err(1, "rpcb_set udp failed"); 548 freeaddrinfo(ai_udp); 549 } 550 } 551 552 /* Set up the socket for udp6 and rpcb register it. */ 553 if (udpflag && ip6flag) { 554 rpcbreg = 0; 555 for (i = 0; i < bindhostc; i++) { 556 memset(&hints, 0, sizeof hints); 557 hints.ai_flags = AI_PASSIVE; 558 hints.ai_family = AF_INET6; 559 hints.ai_socktype = SOCK_DGRAM; 560 hints.ai_protocol = IPPROTO_UDP; 561 if (setbindhost(&ai_udp6, bindhost[i], hints) == 0) { 562 rpcbreg = 1; 563 rpcbregcnt++; 564 if ((sock = socket(ai_udp6->ai_family, 565 ai_udp6->ai_socktype, 566 ai_udp6->ai_protocol)) < 0) { 567 syslog(LOG_ERR, 568 "can't create udp6 socket"); 569 nfsd_exit(1); 570 } 571 if (setsockopt(sock, IPPROTO_IPV6, IPV6_V6ONLY, 572 &on, sizeof on) < 0) { 573 syslog(LOG_ERR, 574 "can't set v6-only binding for " 575 "udp6 socket: %m"); 576 nfsd_exit(1); 577 } 578 if (bind(sock, ai_udp6->ai_addr, 579 ai_udp6->ai_addrlen) < 0) { 580 syslog(LOG_ERR, 581 "can't bind udp6 addr %s: %m", 582 bindhost[i]); 583 nfsd_exit(1); 584 } 585 freeaddrinfo(ai_udp6); 586 addsockargs.sock = sock; 587 addsockargs.name = NULL; 588 addsockargs.namelen = 0; 589 if (nfssvc(nfssvc_addsock, &addsockargs) < 0) { 590 syslog(LOG_ERR, 591 "can't add UDP6 socket"); 592 nfsd_exit(1); 593 } 594 (void)close(sock); 595 } 596 } 597 if (rpcbreg == 1) { 598 memset(&hints, 0, sizeof hints); 599 hints.ai_flags = AI_PASSIVE; 600 hints.ai_family = AF_INET6; 601 hints.ai_socktype = SOCK_DGRAM; 602 hints.ai_protocol = IPPROTO_UDP; 603 ecode = getaddrinfo(NULL, "nfs", &hints, &ai_udp6); 604 if (ecode != 0) { 605 syslog(LOG_ERR, "getaddrinfo udp6: %s", 606 gai_strerror(ecode)); 607 nfsd_exit(1); 608 } 609 nconf_udp6 = getnetconfigent("udp6"); 610 if (nconf_udp6 == NULL) 611 err(1, "getnetconfigent udp6 failed"); 612 nb_udp6.buf = ai_udp6->ai_addr; 613 nb_udp6.len = nb_udp6.maxlen = ai_udp6->ai_addrlen; 614 if (nfs_minvers == NFS_VER2) 615 if (!rpcb_set(NFS_PROGRAM, 2, nconf_udp6, 616 &nb_udp6)) 617 err(1, 618 "rpcb_set udp6 failed"); 619 if (nfs_minvers <= NFS_VER3) 620 if (!rpcb_set(NFS_PROGRAM, 3, nconf_udp6, 621 &nb_udp6)) 622 err(1, 623 "rpcb_set udp6 failed"); 624 freeaddrinfo(ai_udp6); 625 } 626 } 627 628 /* Set up the socket for tcp and rpcb register it. */ 629 if (tcpflag) { 630 rpcbreg = 0; 631 for (i = 0; i < bindhostc; i++) { 632 memset(&hints, 0, sizeof hints); 633 hints.ai_flags = AI_PASSIVE; 634 hints.ai_family = AF_INET; 635 hints.ai_socktype = SOCK_STREAM; 636 hints.ai_protocol = IPPROTO_TCP; 637 if (setbindhost(&ai_tcp, bindhost[i], hints) == 0) { 638 rpcbreg = 1; 639 rpcbregcnt++; 640 if ((tcpsock = socket(AF_INET, SOCK_STREAM, 641 0)) < 0) { 642 syslog(LOG_ERR, 643 "can't create tcp socket"); 644 nfsd_exit(1); 645 } 646 if (setsockopt(tcpsock, SOL_SOCKET, 647 SO_REUSEADDR, 648 (char *)&on, sizeof(on)) < 0) 649 syslog(LOG_ERR, 650 "setsockopt SO_REUSEADDR: %m"); 651 if (bind(tcpsock, ai_tcp->ai_addr, 652 ai_tcp->ai_addrlen) < 0) { 653 syslog(LOG_ERR, 654 "can't bind tcp addr %s: %m", 655 bindhost[i]); 656 nfsd_exit(1); 657 } 658 if (listen(tcpsock, -1) < 0) { 659 syslog(LOG_ERR, "listen failed"); 660 nfsd_exit(1); 661 } 662 freeaddrinfo(ai_tcp); 663 FD_SET(tcpsock, &sockbits); 664 FD_SET(tcpsock, &v4bits); 665 maxsock = tcpsock; 666 connect_type_cnt++; 667 } 668 } 669 if (rpcbreg == 1) { 670 memset(&hints, 0, sizeof hints); 671 hints.ai_flags = AI_PASSIVE; 672 hints.ai_family = AF_INET; 673 hints.ai_socktype = SOCK_STREAM; 674 hints.ai_protocol = IPPROTO_TCP; 675 ecode = getaddrinfo(NULL, "nfs", &hints, 676 &ai_tcp); 677 if (ecode != 0) { 678 syslog(LOG_ERR, "getaddrinfo tcp: %s", 679 gai_strerror(ecode)); 680 nfsd_exit(1); 681 } 682 nconf_tcp = getnetconfigent("tcp"); 683 if (nconf_tcp == NULL) 684 err(1, "getnetconfigent tcp failed"); 685 nb_tcp.buf = ai_tcp->ai_addr; 686 nb_tcp.len = nb_tcp.maxlen = ai_tcp->ai_addrlen; 687 if (nfs_minvers == NFS_VER2) 688 if (!rpcb_set(NFS_PROGRAM, 2, nconf_tcp, 689 &nb_tcp)) 690 err(1, "rpcb_set tcp failed"); 691 if (nfs_minvers <= NFS_VER3) 692 if (!rpcb_set(NFS_PROGRAM, 3, nconf_tcp, 693 &nb_tcp)) 694 err(1, "rpcb_set tcp failed"); 695 freeaddrinfo(ai_tcp); 696 } 697 } 698 699 /* Set up the socket for tcp6 and rpcb register it. */ 700 if (tcpflag && ip6flag) { 701 rpcbreg = 0; 702 for (i = 0; i < bindhostc; i++) { 703 memset(&hints, 0, sizeof hints); 704 hints.ai_flags = AI_PASSIVE; 705 hints.ai_family = AF_INET6; 706 hints.ai_socktype = SOCK_STREAM; 707 hints.ai_protocol = IPPROTO_TCP; 708 if (setbindhost(&ai_tcp6, bindhost[i], hints) == 0) { 709 rpcbreg = 1; 710 rpcbregcnt++; 711 if ((tcp6sock = socket(ai_tcp6->ai_family, 712 ai_tcp6->ai_socktype, 713 ai_tcp6->ai_protocol)) < 0) { 714 syslog(LOG_ERR, 715 "can't create tcp6 socket"); 716 nfsd_exit(1); 717 } 718 if (setsockopt(tcp6sock, SOL_SOCKET, 719 SO_REUSEADDR, 720 (char *)&on, sizeof(on)) < 0) 721 syslog(LOG_ERR, 722 "setsockopt SO_REUSEADDR: %m"); 723 if (setsockopt(tcp6sock, IPPROTO_IPV6, 724 IPV6_V6ONLY, &on, sizeof on) < 0) { 725 syslog(LOG_ERR, 726 "can't set v6-only binding for tcp6 " 727 "socket: %m"); 728 nfsd_exit(1); 729 } 730 if (bind(tcp6sock, ai_tcp6->ai_addr, 731 ai_tcp6->ai_addrlen) < 0) { 732 syslog(LOG_ERR, 733 "can't bind tcp6 addr %s: %m", 734 bindhost[i]); 735 nfsd_exit(1); 736 } 737 if (listen(tcp6sock, -1) < 0) { 738 syslog(LOG_ERR, "listen failed"); 739 nfsd_exit(1); 740 } 741 freeaddrinfo(ai_tcp6); 742 FD_SET(tcp6sock, &sockbits); 743 FD_SET(tcp6sock, &v6bits); 744 if (maxsock < tcp6sock) 745 maxsock = tcp6sock; 746 connect_type_cnt++; 747 } 748 } 749 if (rpcbreg == 1) { 750 memset(&hints, 0, sizeof hints); 751 hints.ai_flags = AI_PASSIVE; 752 hints.ai_family = AF_INET6; 753 hints.ai_socktype = SOCK_STREAM; 754 hints.ai_protocol = IPPROTO_TCP; 755 ecode = getaddrinfo(NULL, "nfs", &hints, &ai_tcp6); 756 if (ecode != 0) { 757 syslog(LOG_ERR, "getaddrinfo tcp6: %s", 758 gai_strerror(ecode)); 759 nfsd_exit(1); 760 } 761 nconf_tcp6 = getnetconfigent("tcp6"); 762 if (nconf_tcp6 == NULL) 763 err(1, "getnetconfigent tcp6 failed"); 764 nb_tcp6.buf = ai_tcp6->ai_addr; 765 nb_tcp6.len = nb_tcp6.maxlen = ai_tcp6->ai_addrlen; 766 if (nfs_minvers == NFS_VER2) 767 if (!rpcb_set(NFS_PROGRAM, 2, nconf_tcp6, 768 &nb_tcp6)) 769 err(1, "rpcb_set tcp6 failed"); 770 if (nfs_minvers <= NFS_VER3) 771 if (!rpcb_set(NFS_PROGRAM, 3, nconf_tcp6, 772 &nb_tcp6)) 773 err(1, "rpcb_set tcp6 failed"); 774 freeaddrinfo(ai_tcp6); 775 } 776 } 777 778 if (rpcbregcnt == 0) { 779 syslog(LOG_ERR, "rpcb_set() failed, nothing to do: %m"); 780 nfsd_exit(1); 781 } 782 783 if (tcpflag && connect_type_cnt == 0) { 784 syslog(LOG_ERR, "tcp connects == 0, nothing to do: %m"); 785 nfsd_exit(1); 786 } 787 788 setproctitle("master"); 789 /* 790 * We always want a master to have a clean way to shut nfsd down 791 * (with unregistration): if the master is killed, it unregisters and 792 * kills all children. If we run for UDP only (and so do not have to 793 * loop waiting for accept), we instead make the parent 794 * a "server" too. start_server will not return. 795 */ 796 if (!tcpflag) 797 start_server(1, &nfsdargs); 798 799 /* 800 * Loop forever accepting connections and passing the sockets 801 * into the kernel for the mounts. 802 */ 803 for (;;) { 804 ready = sockbits; 805 if (connect_type_cnt > 1) { 806 if (select(maxsock + 1, 807 &ready, NULL, NULL, NULL) < 1) { 808 error = errno; 809 if (error == EINTR) 810 continue; 811 syslog(LOG_ERR, "select failed: %m"); 812 nfsd_exit(1); 813 } 814 } 815 for (tcpsock = 0; tcpsock <= maxsock; tcpsock++) { 816 if (FD_ISSET(tcpsock, &ready)) { 817 if (FD_ISSET(tcpsock, &v4bits)) { 818 len = sizeof(inetpeer); 819 if ((msgsock = accept(tcpsock, 820 (struct sockaddr *)&inetpeer, &len)) < 0) { 821 error = errno; 822 syslog(LOG_ERR, "accept failed: %m"); 823 if (error == ECONNABORTED || 824 error == EINTR) 825 continue; 826 nfsd_exit(1); 827 } 828 memset(inetpeer.sin_zero, 0, 829 sizeof(inetpeer.sin_zero)); 830 if (setsockopt(msgsock, SOL_SOCKET, 831 SO_KEEPALIVE, (char *)&on, sizeof(on)) < 0) 832 syslog(LOG_ERR, 833 "setsockopt SO_KEEPALIVE: %m"); 834 addsockargs.sock = msgsock; 835 addsockargs.name = (caddr_t)&inetpeer; 836 addsockargs.namelen = len; 837 nfssvc(nfssvc_addsock, &addsockargs); 838 (void)close(msgsock); 839 } else if (FD_ISSET(tcpsock, &v6bits)) { 840 len = sizeof(inet6peer); 841 if ((msgsock = accept(tcpsock, 842 (struct sockaddr *)&inet6peer, 843 &len)) < 0) { 844 error = errno; 845 syslog(LOG_ERR, 846 "accept failed: %m"); 847 if (error == ECONNABORTED || 848 error == EINTR) 849 continue; 850 nfsd_exit(1); 851 } 852 if (setsockopt(msgsock, SOL_SOCKET, 853 SO_KEEPALIVE, (char *)&on, 854 sizeof(on)) < 0) 855 syslog(LOG_ERR, "setsockopt " 856 "SO_KEEPALIVE: %m"); 857 addsockargs.sock = msgsock; 858 addsockargs.name = (caddr_t)&inet6peer; 859 addsockargs.namelen = len; 860 nfssvc(nfssvc_addsock, &addsockargs); 861 (void)close(msgsock); 862 } 863 } 864 } 865 } 866 } 867 868 static int 869 setbindhost(struct addrinfo **ai, const char *bindhost, struct addrinfo hints) 870 { 871 int ecode; 872 u_int32_t host_addr[4]; /* IPv4 or IPv6 */ 873 const char *hostptr; 874 875 if (bindhost == NULL || strcmp("*", bindhost) == 0) 876 hostptr = NULL; 877 else 878 hostptr = bindhost; 879 880 if (hostptr != NULL) { 881 switch (hints.ai_family) { 882 case AF_INET: 883 if (inet_pton(AF_INET, hostptr, host_addr) == 1) { 884 hints.ai_flags = AI_NUMERICHOST; 885 } else { 886 if (inet_pton(AF_INET6, hostptr, 887 host_addr) == 1) 888 return (1); 889 } 890 break; 891 case AF_INET6: 892 if (inet_pton(AF_INET6, hostptr, host_addr) == 1) { 893 hints.ai_flags = AI_NUMERICHOST; 894 } else { 895 if (inet_pton(AF_INET, hostptr, 896 host_addr) == 1) 897 return (1); 898 } 899 break; 900 default: 901 break; 902 } 903 } 904 905 ecode = getaddrinfo(hostptr, "nfs", &hints, ai); 906 if (ecode != 0) { 907 syslog(LOG_ERR, "getaddrinfo %s: %s", bindhost, 908 gai_strerror(ecode)); 909 return (1); 910 } 911 return (0); 912 } 913 914 static void 915 set_nfsdcnt(int proposed) 916 { 917 918 if (proposed < 1) { 919 warnx("nfsd count too low %d; reset to %d", proposed, 920 DEFNFSDCNT); 921 nfsdcnt = DEFNFSDCNT; 922 } else if (proposed > MAXNFSDCNT) { 923 warnx("nfsd count too high %d; truncated to %d", proposed, 924 MAXNFSDCNT); 925 nfsdcnt = MAXNFSDCNT; 926 } else 927 nfsdcnt = proposed; 928 nfsdcnt_set = 1; 929 } 930 931 static void 932 usage(void) 933 { 934 (void)fprintf(stderr, "%s", getopt_usage); 935 exit(1); 936 } 937 938 static void 939 nonfs(__unused int signo) 940 { 941 syslog(LOG_ERR, "missing system call: NFS not available"); 942 } 943 944 static void 945 reapchild(__unused int signo) 946 { 947 pid_t pid; 948 int i; 949 950 while ((pid = wait3(NULL, WNOHANG, NULL)) > 0) { 951 for (i = 0; i < nfsdcnt; i++) 952 if (pid == children[i]) 953 children[i] = -1; 954 } 955 } 956 957 static void 958 unregistration(void) 959 { 960 if ((!rpcb_unset(NFS_PROGRAM, 2, NULL)) || 961 (!rpcb_unset(NFS_PROGRAM, 3, NULL))) 962 syslog(LOG_ERR, "rpcb_unset failed"); 963 } 964 965 static void 966 killchildren(void) 967 { 968 int i; 969 970 for (i = 0; i < nfsdcnt; i++) { 971 if (children[i] > 0) 972 kill(children[i], SIGKILL); 973 } 974 } 975 976 /* 977 * Cleanup master after SIGUSR1. 978 */ 979 static void 980 cleanup(__unused int signo) 981 { 982 nfsd_exit(0); 983 } 984 985 /* 986 * Cleanup child after SIGUSR1. 987 */ 988 static void 989 child_cleanup(__unused int signo) 990 { 991 exit(0); 992 } 993 994 static void 995 nfsd_exit(int status) 996 { 997 killchildren(); 998 unregistration(); 999 exit(status); 1000 } 1001 1002 static int 1003 get_tuned_nfsdcount(void) 1004 { 1005 int ncpu, error, tuned_nfsdcnt; 1006 size_t ncpu_size; 1007 1008 ncpu_size = sizeof(ncpu); 1009 error = sysctlbyname("hw.ncpu", &ncpu, &ncpu_size, NULL, 0); 1010 if (error) { 1011 warnx("sysctlbyname(hw.ncpu) failed defaulting to %d nfs servers", 1012 DEFNFSDCNT); 1013 tuned_nfsdcnt = DEFNFSDCNT; 1014 } else { 1015 tuned_nfsdcnt = ncpu * 8; 1016 } 1017 return tuned_nfsdcnt; 1018 } 1019 1020 static void 1021 start_server(int master, struct nfsd_nfsd_args *nfsdargp) 1022 { 1023 char principal[MAXHOSTNAMELEN + 5]; 1024 int status, error; 1025 char hostname[MAXHOSTNAMELEN + 1], *cp; 1026 struct addrinfo *aip, hints; 1027 1028 status = 0; 1029 gethostname(hostname, sizeof (hostname)); 1030 snprintf(principal, sizeof (principal), "nfs@%s", hostname); 1031 if ((cp = strchr(hostname, '.')) == NULL || 1032 *(cp + 1) == '\0') { 1033 /* If not fully qualified, try getaddrinfo() */ 1034 memset((void *)&hints, 0, sizeof (hints)); 1035 hints.ai_flags = AI_CANONNAME; 1036 error = getaddrinfo(hostname, NULL, &hints, &aip); 1037 if (error == 0) { 1038 if (aip->ai_canonname != NULL && 1039 (cp = strchr(aip->ai_canonname, '.')) != 1040 NULL && *(cp + 1) != '\0') 1041 snprintf(principal, sizeof (principal), 1042 "nfs@%s", aip->ai_canonname); 1043 freeaddrinfo(aip); 1044 } 1045 } 1046 nfsdargp->principal = principal; 1047 1048 if (nfsdcnt_set) 1049 nfsdargp->minthreads = nfsdargp->maxthreads = nfsdcnt; 1050 else { 1051 nfsdargp->minthreads = minthreads_set ? minthreads : get_tuned_nfsdcount(); 1052 nfsdargp->maxthreads = maxthreads_set ? maxthreads : nfsdargp->minthreads; 1053 if (nfsdargp->maxthreads < nfsdargp->minthreads) 1054 nfsdargp->maxthreads = nfsdargp->minthreads; 1055 } 1056 error = nfssvc(nfssvc_nfsd, nfsdargp); 1057 if (error < 0 && errno == EAUTH) { 1058 /* 1059 * This indicates that it could not register the 1060 * rpcsec_gss credentials, usually because the 1061 * gssd daemon isn't running. 1062 * (only the experimental server with nfsv4) 1063 */ 1064 syslog(LOG_ERR, "No gssd, using AUTH_SYS only"); 1065 principal[0] = '\0'; 1066 error = nfssvc(nfssvc_nfsd, nfsdargp); 1067 } 1068 if (error < 0) { 1069 if (errno == ENXIO) { 1070 syslog(LOG_ERR, "Bad -p option, cannot run"); 1071 if (masterpid != 0 && master == 0) 1072 kill(masterpid, SIGUSR1); 1073 } else 1074 syslog(LOG_ERR, "nfssvc: %m"); 1075 status = 1; 1076 } 1077 if (master) 1078 nfsd_exit(status); 1079 else 1080 exit(status); 1081 } 1082 1083 /* 1084 * Open the stable restart file and return the file descriptor for it. 1085 */ 1086 static void 1087 open_stable(int *stable_fdp, int *backup_fdp) 1088 { 1089 int stable_fd, backup_fd = -1, ret; 1090 struct stat st, backup_st; 1091 1092 /* Open and stat the stable restart file. */ 1093 stable_fd = open(NFSD_STABLERESTART, O_RDWR, 0); 1094 if (stable_fd < 0) 1095 stable_fd = open(NFSD_STABLERESTART, O_RDWR | O_CREAT, 0600); 1096 if (stable_fd >= 0) { 1097 ret = fstat(stable_fd, &st); 1098 if (ret < 0) { 1099 close(stable_fd); 1100 stable_fd = -1; 1101 } 1102 } 1103 1104 /* Open and stat the backup stable restart file. */ 1105 if (stable_fd >= 0) { 1106 backup_fd = open(NFSD_STABLEBACKUP, O_RDWR, 0); 1107 if (backup_fd < 0) 1108 backup_fd = open(NFSD_STABLEBACKUP, O_RDWR | O_CREAT, 1109 0600); 1110 if (backup_fd >= 0) { 1111 ret = fstat(backup_fd, &backup_st); 1112 if (ret < 0) { 1113 close(backup_fd); 1114 backup_fd = -1; 1115 } 1116 } 1117 if (backup_fd < 0) { 1118 close(stable_fd); 1119 stable_fd = -1; 1120 } 1121 } 1122 1123 *stable_fdp = stable_fd; 1124 *backup_fdp = backup_fd; 1125 if (stable_fd < 0) 1126 return; 1127 1128 /* Sync up the 2 files, as required. */ 1129 if (st.st_size > 0) 1130 copy_stable(stable_fd, backup_fd); 1131 else if (backup_st.st_size > 0) 1132 copy_stable(backup_fd, stable_fd); 1133 } 1134 1135 /* 1136 * Copy the stable restart file to the backup or vice versa. 1137 */ 1138 static void 1139 copy_stable(int from_fd, int to_fd) 1140 { 1141 int cnt, ret; 1142 static char buf[1024]; 1143 1144 ret = lseek(from_fd, (off_t)0, SEEK_SET); 1145 if (ret >= 0) 1146 ret = lseek(to_fd, (off_t)0, SEEK_SET); 1147 if (ret >= 0) 1148 ret = ftruncate(to_fd, (off_t)0); 1149 if (ret >= 0) 1150 do { 1151 cnt = read(from_fd, buf, 1024); 1152 if (cnt > 0) 1153 ret = write(to_fd, buf, cnt); 1154 else if (cnt < 0) 1155 ret = cnt; 1156 } while (cnt > 0 && ret >= 0); 1157 if (ret >= 0) 1158 ret = fsync(to_fd); 1159 if (ret < 0) 1160 syslog(LOG_ERR, "stable restart copy failure: %m"); 1161 } 1162 1163 /* 1164 * Back up the stable restart file when indicated by the kernel. 1165 */ 1166 static void 1167 backup_stable(__unused int signo) 1168 { 1169 1170 if (stablefd >= 0) 1171 copy_stable(stablefd, backupfd); 1172 } 1173 1174 /* 1175 * Parse the pNFS string and extract the DS servers and ports numbers. 1176 */ 1177 static void 1178 parse_dsserver(const char *optionarg, struct nfsd_nfsd_args *nfsdargp) 1179 { 1180 char *ad, *cp, *cp2, *dsaddr, *dshost, *dspath, *dsvol, nfsprt[9]; 1181 int ecode; 1182 u_int adsiz, dsaddrcnt, dshostcnt, dspathcnt, hostsiz, pathsiz; 1183 size_t dsaddrsiz, dshostsiz, dspathsiz, nfsprtsiz; 1184 struct addrinfo hints, *ai_tcp; 1185 struct sockaddr_in sin; 1186 1187 cp = strdup(optionarg); 1188 if (cp == NULL) 1189 errx(1, "Out of memory"); 1190 1191 /* Now, do the host names. */ 1192 dspathsiz = 1024; 1193 dspathcnt = 0; 1194 dspath = malloc(dspathsiz); 1195 if (dspath == NULL) 1196 errx(1, "Out of memory"); 1197 dshostsiz = 1024; 1198 dshostcnt = 0; 1199 dshost = malloc(dshostsiz); 1200 if (dshost == NULL) 1201 errx(1, "Out of memory"); 1202 dsaddrsiz = 1024; 1203 dsaddrcnt = 0; 1204 dsaddr = malloc(dsaddrsiz); 1205 if (dsaddr == NULL) 1206 errx(1, "Out of memory"); 1207 1208 /* Put the NFS port# in "." form. */ 1209 snprintf(nfsprt, 9, ".%d.%d", 2049 >> 8, 2049 & 0xff); 1210 nfsprtsiz = strlen(nfsprt); 1211 1212 ai_tcp = NULL; 1213 /* Loop around for each DS server name. */ 1214 do { 1215 cp2 = strchr(cp, ','); 1216 if (cp2 != NULL) { 1217 /* Not the last DS in the list. */ 1218 *cp2++ = '\0'; 1219 if (*cp2 == '\0') 1220 usage(); 1221 } 1222 1223 dsvol = strchr(cp, ':'); 1224 if (dsvol == NULL || *(dsvol + 1) == '\0') 1225 usage(); 1226 *dsvol++ = '\0'; 1227 1228 /* Append this pathname to dspath. */ 1229 pathsiz = strlen(dsvol); 1230 if (dspathcnt + pathsiz + 1 > dspathsiz) { 1231 dspathsiz *= 2; 1232 dspath = realloc(dspath, dspathsiz); 1233 if (dspath == NULL) 1234 errx(1, "Out of memory"); 1235 } 1236 strcpy(&dspath[dspathcnt], dsvol); 1237 dspathcnt += pathsiz + 1; 1238 1239 if (ai_tcp != NULL) 1240 freeaddrinfo(ai_tcp); 1241 1242 /* Get the fully qualified domain name and IP address. */ 1243 memset(&hints, 0, sizeof(hints)); 1244 hints.ai_flags = AI_CANONNAME; 1245 hints.ai_family = AF_INET; 1246 hints.ai_socktype = SOCK_STREAM; 1247 hints.ai_protocol = IPPROTO_TCP; 1248 ecode = getaddrinfo(cp, NULL, &hints, &ai_tcp); 1249 if (ecode != 0) 1250 err(1, "getaddrinfo pnfs: %s %s", cp, 1251 gai_strerror(ecode)); 1252 if (ai_tcp->ai_addr->sa_family != AF_INET || 1253 ai_tcp->ai_addrlen < sizeof(sin)) 1254 err(1, "getaddrinfo() returned non-INET address"); 1255 /* Mips cares about sockaddr_in alignment, so copy the addr. */ 1256 memcpy(&sin, ai_tcp->ai_addr, sizeof(sin)); 1257 1258 /* Append this address to dsaddr. */ 1259 ad = inet_ntoa(sin.sin_addr); 1260 adsiz = strlen(ad); 1261 if (dsaddrcnt + adsiz + nfsprtsiz + 1 > dsaddrsiz) { 1262 dsaddrsiz *= 2; 1263 dsaddr = realloc(dsaddr, dsaddrsiz); 1264 if (dsaddr == NULL) 1265 errx(1, "Out of memory"); 1266 } 1267 strcpy(&dsaddr[dsaddrcnt], ad); 1268 strcat(&dsaddr[dsaddrcnt], nfsprt); 1269 dsaddrcnt += adsiz + nfsprtsiz + 1; 1270 1271 /* Append this hostname to dshost. */ 1272 hostsiz = strlen(ai_tcp->ai_canonname); 1273 if (dshostcnt + hostsiz + 1 > dshostsiz) { 1274 dshostsiz *= 2; 1275 dshost = realloc(dshost, dshostsiz); 1276 if (dshost == NULL) 1277 errx(1, "Out of memory"); 1278 } 1279 strcpy(&dshost[dshostcnt], ai_tcp->ai_canonname); 1280 dshostcnt += hostsiz + 1; 1281 1282 cp = cp2; 1283 } while (cp != NULL); 1284 1285 nfsdargp->addr = dsaddr; 1286 nfsdargp->addrlen = dsaddrcnt; 1287 nfsdargp->dnshost = dshost; 1288 nfsdargp->dnshostlen = dshostcnt; 1289 nfsdargp->dspath = dspath; 1290 nfsdargp->dspathlen = dspathcnt; 1291 freeaddrinfo(ai_tcp); 1292 } 1293 1294