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 36static 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 43static char sccsid[] = "@(#)nfsd.c 8.9 (Berkeley) 3/29/95"; 44#endif 45static 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 84static 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 93static pid_t children[MAXNFSDCNT]; /* PIDs of children */ 94static pid_t masterpid; /* PID of master/parent */ 95static int nfsdcnt; /* number of children */ 96static int nfsdcnt_set; 97static int minthreads; 98static int maxthreads; 99static int nfssvc_nfsd; /* Set to correct NFSSVC_xxx flag */ 100static int stablefd = -1; /* Fd for the stable restart file */ 101static int backupfd; /* Fd for the backup stable restart file */ 102static const char *getopt_shortopts; 103static const char *getopt_usage; 104static int nfs_minvers = NFS_VER2; 105 106static int minthreads_set; 107static int maxthreads_set; 108 109static struct option longopts[] = { 110 { "debug", no_argument, &debug, 1 }, 111 { "minthreads", required_argument, &minthreads_set, 1 }, 112 { "maxthreads", required_argument, &maxthreads_set, 1 }, 113 { "pnfs", required_argument, NULL, 'p' }, 114 { "mirror", required_argument, NULL, 'm' }, 115 { NULL, 0, NULL, 0} 116}; 117 118static void cleanup(int); 119static void child_cleanup(int); 120static void killchildren(void); 121static void nfsd_exit(int); 122static void nonfs(int); 123static void reapchild(int); 124static int setbindhost(struct addrinfo **ia, const char *bindhost, 125 struct addrinfo hints); 126static void start_server(int, struct nfsd_nfsd_args *, const char *vhost); 127static void unregistration(void); 128static void usage(void); 129static void open_stable(int *, int *); 130static void copy_stable(int, int); 131static void backup_stable(int); 132static void set_nfsdcnt(int); 133static void parse_dsserver(const char *, struct nfsd_nfsd_args *); 134 135/* 136 * Nfs server daemon mostly just a user context for nfssvc() 137 * 138 * 1 - do file descriptor and signal cleanup 139 * 2 - fork the nfsd(s) 140 * 3 - create server socket(s) 141 * 4 - register socket with rpcbind 142 * 143 * For connectionless protocols, just pass the socket into the kernel via. 144 * nfssvc(). 145 * For connection based sockets, loop doing accepts. When you get a new 146 * socket from accept, pass the msgsock into the kernel via. nfssvc(). 147 * The arguments are: 148 * -r - reregister with rpcbind 149 * -d - unregister with rpcbind 150 * -t - support tcp nfs clients 151 * -u - support udp nfs clients 152 * -e - forces it to run a server that supports nfsv4 153 * -p - enable a pNFS service 154 * -m - set the mirroring level for a pNFS service 155 * followed by "n" which is the number of nfsds' to fork off 156 */ 157int 158main(int argc, char **argv) 159{ 160 struct nfsd_addsock_args addsockargs; 161 struct addrinfo *ai_udp, *ai_tcp, *ai_udp6, *ai_tcp6, hints; 162 struct netconfig *nconf_udp, *nconf_tcp, *nconf_udp6, *nconf_tcp6; 163 struct netbuf nb_udp, nb_tcp, nb_udp6, nb_tcp6; 164 struct sockaddr_storage peer; 165 fd_set ready, sockbits; 166 int ch, connect_type_cnt, i, maxsock, msgsock; 167 socklen_t len; 168 int on = 1, unregister, reregister, sock; 169 int tcp6sock, ip6flag, tcpflag, tcpsock; 170 int udpflag, ecode, error, s; 171 int bindhostc, bindanyflag, rpcbreg, rpcbregcnt; 172 int nfssvc_addsock; 173 int longindex = 0; 174 size_t nfs_minvers_size; 175 const char *lopt; 176 char **bindhost = NULL; 177 pid_t pid; 178 struct nfsd_nfsd_args nfsdargs; 179 const char *vhostname = NULL; 180 181 nfsdargs.mirrorcnt = 1; 182 nfsdargs.addr = NULL; 183 nfsdargs.addrlen = 0; 184 nfsdcnt = DEFNFSDCNT; 185 unregister = reregister = tcpflag = maxsock = 0; 186 bindanyflag = udpflag = connect_type_cnt = bindhostc = 0; 187 getopt_shortopts = "ah:n:rdtuep:m:V:"; 188 getopt_usage = 189 "usage:\n" 190 " nfsd [-ardtue] [-h bindip]\n" 191 " [-n numservers] [--minthreads #] [--maxthreads #]\n" 192 " [-p/--pnfs dsserver0:/dsserver0-mounted-on-dir,...,\n" 193 " [-V virtual_hostname]\n" 194 " dsserverN:/dsserverN-mounted-on-dir] [-m mirrorlevel]\n"; 195 while ((ch = getopt_long(argc, argv, getopt_shortopts, longopts, 196 &longindex)) != -1) 197 switch (ch) { 198 case 'V': 199 if (strlen(optarg) <= MAXHOSTNAMELEN) 200 vhostname = optarg; 201 else 202 warnx("Virtual host name (%s) is too long", 203 optarg); 204 break; 205 case 'a': 206 bindanyflag = 1; 207 break; 208 case 'n': 209 set_nfsdcnt(atoi(optarg)); 210 break; 211 case 'h': 212 bindhostc++; 213 bindhost = realloc(bindhost,sizeof(char *)*bindhostc); 214 if (bindhost == NULL) 215 errx(1, "Out of memory"); 216 bindhost[bindhostc-1] = strdup(optarg); 217 if (bindhost[bindhostc-1] == NULL) 218 errx(1, "Out of memory"); 219 break; 220 case 'r': 221 reregister = 1; 222 break; 223 case 'd': 224 unregister = 1; 225 break; 226 case 't': 227 tcpflag = 1; 228 break; 229 case 'u': 230 udpflag = 1; 231 break; 232 case 'e': 233 /* now a no-op, since this is the default */ 234 break; 235 case 'p': 236 /* Parse out the DS server host names and mount pts. */ 237 parse_dsserver(optarg, &nfsdargs); 238 break; 239 case 'm': 240 /* Set the mirror level for a pNFS service. */ 241 i = atoi(optarg); 242 if (i < 2 || i > NFSDEV_MAXMIRRORS) 243 errx(1, "Mirror level out of range 2<-->%d", 244 NFSDEV_MAXMIRRORS); 245 nfsdargs.mirrorcnt = i; 246 break; 247 case 0: 248 lopt = longopts[longindex].name; 249 if (!strcmp(lopt, "minthreads")) { 250 minthreads = atoi(optarg); 251 } else if (!strcmp(lopt, "maxthreads")) { 252 maxthreads = atoi(optarg); 253 } 254 break; 255 default: 256 case '?': 257 usage(); 258 } 259 if (!tcpflag && !udpflag) 260 udpflag = 1; 261 argv += optind; 262 argc -= optind; 263 if (minthreads_set && maxthreads_set && minthreads > maxthreads) 264 errx(EX_USAGE, 265 "error: minthreads(%d) can't be greater than " 266 "maxthreads(%d)", minthreads, maxthreads); 267 268 /* 269 * XXX 270 * Backward compatibility, trailing number is the count of daemons. 271 */ 272 if (argc > 1) 273 usage(); 274 if (argc == 1) 275 set_nfsdcnt(atoi(argv[0])); 276 277 /* 278 * Unless the "-o" option was specified, try and run "nfsd". 279 * If "-o" was specified, try and run "nfsserver". 280 */ 281 if (modfind("nfsd") < 0) { 282 /* Not present in kernel, try loading it */ 283 if (kldload("nfsd") < 0 || modfind("nfsd") < 0) 284 errx(1, "NFS server is not available"); 285 } 286 287 ip6flag = 1; 288 s = socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP); 289 if (s == -1) { 290 if (errno != EPROTONOSUPPORT && errno != EAFNOSUPPORT) 291 err(1, "socket"); 292 ip6flag = 0; 293 } else if (getnetconfigent("udp6") == NULL || 294 getnetconfigent("tcp6") == NULL) { 295 ip6flag = 0; 296 } 297 if (s != -1) 298 close(s); 299 300 if (bindhostc == 0 || bindanyflag) { 301 bindhostc++; 302 bindhost = realloc(bindhost,sizeof(char *)*bindhostc); 303 if (bindhost == NULL) 304 errx(1, "Out of memory"); 305 bindhost[bindhostc-1] = strdup("*"); 306 if (bindhost[bindhostc-1] == NULL) 307 errx(1, "Out of memory"); 308 } 309 310 if (unregister) { 311 /* 312 * Unregister before setting nfs_minvers, in case the 313 * value of vfs.nfsd.server_min_nfsvers has changed 314 * since registering with rpcbind. 315 */ 316 unregistration(); 317 exit (0); 318 } 319 320 nfs_minvers_size = sizeof(nfs_minvers); 321 error = sysctlbyname("vfs.nfsd.server_min_nfsvers", &nfs_minvers, 322 &nfs_minvers_size, NULL, 0); 323 if (error != 0 || nfs_minvers < NFS_VER2 || nfs_minvers > NFS_VER4) { 324 warnx("sysctlbyname(vfs.nfsd.server_min_nfsvers) failed," 325 " defaulting to NFSv2"); 326 nfs_minvers = NFS_VER2; 327 } 328 329 if (reregister) { 330 if (udpflag) { 331 memset(&hints, 0, sizeof hints); 332 hints.ai_flags = AI_PASSIVE; 333 hints.ai_family = AF_INET; 334 hints.ai_socktype = SOCK_DGRAM; 335 hints.ai_protocol = IPPROTO_UDP; 336 ecode = getaddrinfo(NULL, "nfs", &hints, &ai_udp); 337 if (ecode != 0) 338 err(1, "getaddrinfo udp: %s", gai_strerror(ecode)); 339 nconf_udp = getnetconfigent("udp"); 340 if (nconf_udp == NULL) 341 err(1, "getnetconfigent udp failed"); 342 nb_udp.buf = ai_udp->ai_addr; 343 nb_udp.len = nb_udp.maxlen = ai_udp->ai_addrlen; 344 if (nfs_minvers == NFS_VER2) 345 if (!rpcb_set(NFS_PROGRAM, 2, nconf_udp, 346 &nb_udp)) 347 err(1, "rpcb_set udp failed"); 348 if (nfs_minvers <= NFS_VER3) 349 if (!rpcb_set(NFS_PROGRAM, 3, nconf_udp, 350 &nb_udp)) 351 err(1, "rpcb_set udp failed"); 352 freeaddrinfo(ai_udp); 353 } 354 if (udpflag && ip6flag) { 355 memset(&hints, 0, sizeof hints); 356 hints.ai_flags = AI_PASSIVE; 357 hints.ai_family = AF_INET6; 358 hints.ai_socktype = SOCK_DGRAM; 359 hints.ai_protocol = IPPROTO_UDP; 360 ecode = getaddrinfo(NULL, "nfs", &hints, &ai_udp6); 361 if (ecode != 0) 362 err(1, "getaddrinfo udp6: %s", gai_strerror(ecode)); 363 nconf_udp6 = getnetconfigent("udp6"); 364 if (nconf_udp6 == NULL) 365 err(1, "getnetconfigent udp6 failed"); 366 nb_udp6.buf = ai_udp6->ai_addr; 367 nb_udp6.len = nb_udp6.maxlen = ai_udp6->ai_addrlen; 368 if (nfs_minvers == NFS_VER2) 369 if (!rpcb_set(NFS_PROGRAM, 2, nconf_udp6, 370 &nb_udp6)) 371 err(1, "rpcb_set udp6 failed"); 372 if (nfs_minvers <= NFS_VER3) 373 if (!rpcb_set(NFS_PROGRAM, 3, nconf_udp6, 374 &nb_udp6)) 375 err(1, "rpcb_set udp6 failed"); 376 freeaddrinfo(ai_udp6); 377 } 378 if (tcpflag) { 379 memset(&hints, 0, sizeof hints); 380 hints.ai_flags = AI_PASSIVE; 381 hints.ai_family = AF_INET; 382 hints.ai_socktype = SOCK_STREAM; 383 hints.ai_protocol = IPPROTO_TCP; 384 ecode = getaddrinfo(NULL, "nfs", &hints, &ai_tcp); 385 if (ecode != 0) 386 err(1, "getaddrinfo tcp: %s", gai_strerror(ecode)); 387 nconf_tcp = getnetconfigent("tcp"); 388 if (nconf_tcp == NULL) 389 err(1, "getnetconfigent tcp failed"); 390 nb_tcp.buf = ai_tcp->ai_addr; 391 nb_tcp.len = nb_tcp.maxlen = ai_tcp->ai_addrlen; 392 if (nfs_minvers == NFS_VER2) 393 if (!rpcb_set(NFS_PROGRAM, 2, nconf_tcp, 394 &nb_tcp)) 395 err(1, "rpcb_set tcp failed"); 396 if (nfs_minvers <= NFS_VER3) 397 if (!rpcb_set(NFS_PROGRAM, 3, nconf_tcp, 398 &nb_tcp)) 399 err(1, "rpcb_set tcp failed"); 400 freeaddrinfo(ai_tcp); 401 } 402 if (tcpflag && ip6flag) { 403 memset(&hints, 0, sizeof hints); 404 hints.ai_flags = AI_PASSIVE; 405 hints.ai_family = AF_INET6; 406 hints.ai_socktype = SOCK_STREAM; 407 hints.ai_protocol = IPPROTO_TCP; 408 ecode = getaddrinfo(NULL, "nfs", &hints, &ai_tcp6); 409 if (ecode != 0) 410 err(1, "getaddrinfo tcp6: %s", gai_strerror(ecode)); 411 nconf_tcp6 = getnetconfigent("tcp6"); 412 if (nconf_tcp6 == NULL) 413 err(1, "getnetconfigent tcp6 failed"); 414 nb_tcp6.buf = ai_tcp6->ai_addr; 415 nb_tcp6.len = nb_tcp6.maxlen = ai_tcp6->ai_addrlen; 416 if (nfs_minvers == NFS_VER2) 417 if (!rpcb_set(NFS_PROGRAM, 2, nconf_tcp6, 418 &nb_tcp6)) 419 err(1, "rpcb_set tcp6 failed"); 420 if (nfs_minvers <= NFS_VER3) 421 if (!rpcb_set(NFS_PROGRAM, 3, nconf_tcp6, 422 &nb_tcp6)) 423 err(1, "rpcb_set tcp6 failed"); 424 freeaddrinfo(ai_tcp6); 425 } 426 exit (0); 427 } 428 if (debug == 0) { 429 daemon(0, 0); 430 (void)signal(SIGHUP, SIG_IGN); 431 (void)signal(SIGINT, SIG_IGN); 432 /* 433 * nfsd sits in the kernel most of the time. It needs 434 * to ignore SIGTERM/SIGQUIT in order to stay alive as long 435 * as possible during a shutdown, otherwise loopback 436 * mounts will not be able to unmount. 437 */ 438 (void)signal(SIGTERM, SIG_IGN); 439 (void)signal(SIGQUIT, SIG_IGN); 440 } 441 (void)signal(SIGSYS, nonfs); 442 (void)signal(SIGCHLD, reapchild); 443 (void)signal(SIGUSR2, backup_stable); 444 445 openlog("nfsd", LOG_PID | (debug ? LOG_PERROR : 0), LOG_DAEMON); 446 447 /* 448 * For V4, we open the stablerestart file and call nfssvc() 449 * to get it loaded. This is done before the daemons do the 450 * regular nfssvc() call to service NFS requests. 451 * (This way the file remains open until the last nfsd is killed 452 * off.) 453 * It and the backup copy will be created as empty files 454 * the first time this nfsd is started and should never be 455 * deleted/replaced if at all possible. It should live on a 456 * local, non-volatile storage device that does not do hardware 457 * level write-back caching. (See SCSI doc for more information 458 * on how to prevent write-back caching on SCSI disks.) 459 */ 460 open_stable(&stablefd, &backupfd); 461 if (stablefd < 0) { 462 syslog(LOG_ERR, "Can't open %s: %m\n", NFSD_STABLERESTART); 463 exit(1); 464 } 465 /* This system call will fail for old kernels, but that's ok. */ 466 nfssvc(NFSSVC_BACKUPSTABLE, NULL); 467 if (nfssvc(NFSSVC_STABLERESTART, (caddr_t)&stablefd) < 0) { 468 syslog(LOG_ERR, "Can't read stable storage file: %m\n"); 469 exit(1); 470 } 471 nfssvc_addsock = NFSSVC_NFSDADDSOCK; 472 nfssvc_nfsd = NFSSVC_NFSDNFSD | NFSSVC_NEWSTRUCT; 473 474 if (tcpflag) { 475 /* 476 * For TCP mode, we fork once to start the first 477 * kernel nfsd thread. The kernel will add more 478 * threads as needed. 479 */ 480 masterpid = getpid(); 481 pid = fork(); 482 if (pid == -1) { 483 syslog(LOG_ERR, "fork: %m"); 484 nfsd_exit(1); 485 } 486 if (pid) { 487 children[0] = pid; 488 } else { 489 (void)signal(SIGUSR1, child_cleanup); 490 setproctitle("server"); 491 start_server(0, &nfsdargs, vhostname); 492 } 493 } 494 495 (void)signal(SIGUSR1, cleanup); 496 FD_ZERO(&sockbits); 497 498 rpcbregcnt = 0; 499 /* Set up the socket for udp and rpcb register it. */ 500 if (udpflag) { 501 rpcbreg = 0; 502 for (i = 0; i < bindhostc; i++) { 503 memset(&hints, 0, sizeof hints); 504 hints.ai_flags = AI_PASSIVE; 505 hints.ai_family = AF_INET; 506 hints.ai_socktype = SOCK_DGRAM; 507 hints.ai_protocol = IPPROTO_UDP; 508 if (setbindhost(&ai_udp, bindhost[i], hints) == 0) { 509 rpcbreg = 1; 510 rpcbregcnt++; 511 if ((sock = socket(ai_udp->ai_family, 512 ai_udp->ai_socktype, 513 ai_udp->ai_protocol)) < 0) { 514 syslog(LOG_ERR, 515 "can't create udp socket"); 516 nfsd_exit(1); 517 } 518 if (bind(sock, ai_udp->ai_addr, 519 ai_udp->ai_addrlen) < 0) { 520 syslog(LOG_ERR, 521 "can't bind udp addr %s: %m", 522 bindhost[i]); 523 nfsd_exit(1); 524 } 525 freeaddrinfo(ai_udp); 526 addsockargs.sock = sock; 527 addsockargs.name = NULL; 528 addsockargs.namelen = 0; 529 if (nfssvc(nfssvc_addsock, &addsockargs) < 0) { 530 syslog(LOG_ERR, "can't Add UDP socket"); 531 nfsd_exit(1); 532 } 533 (void)close(sock); 534 } 535 } 536 if (rpcbreg == 1) { 537 memset(&hints, 0, sizeof hints); 538 hints.ai_flags = AI_PASSIVE; 539 hints.ai_family = AF_INET; 540 hints.ai_socktype = SOCK_DGRAM; 541 hints.ai_protocol = IPPROTO_UDP; 542 ecode = getaddrinfo(NULL, "nfs", &hints, &ai_udp); 543 if (ecode != 0) { 544 syslog(LOG_ERR, "getaddrinfo udp: %s", 545 gai_strerror(ecode)); 546 nfsd_exit(1); 547 } 548 nconf_udp = getnetconfigent("udp"); 549 if (nconf_udp == NULL) 550 err(1, "getnetconfigent udp failed"); 551 nb_udp.buf = ai_udp->ai_addr; 552 nb_udp.len = nb_udp.maxlen = ai_udp->ai_addrlen; 553 if (nfs_minvers == NFS_VER2) 554 if (!rpcb_set(NFS_PROGRAM, 2, nconf_udp, 555 &nb_udp)) 556 err(1, "rpcb_set udp failed"); 557 if (nfs_minvers <= NFS_VER3) 558 if (!rpcb_set(NFS_PROGRAM, 3, nconf_udp, 559 &nb_udp)) 560 err(1, "rpcb_set udp failed"); 561 freeaddrinfo(ai_udp); 562 } 563 } 564 565 /* Set up the socket for udp6 and rpcb register it. */ 566 if (udpflag && ip6flag) { 567 rpcbreg = 0; 568 for (i = 0; i < bindhostc; i++) { 569 memset(&hints, 0, sizeof hints); 570 hints.ai_flags = AI_PASSIVE; 571 hints.ai_family = AF_INET6; 572 hints.ai_socktype = SOCK_DGRAM; 573 hints.ai_protocol = IPPROTO_UDP; 574 if (setbindhost(&ai_udp6, bindhost[i], hints) == 0) { 575 rpcbreg = 1; 576 rpcbregcnt++; 577 if ((sock = socket(ai_udp6->ai_family, 578 ai_udp6->ai_socktype, 579 ai_udp6->ai_protocol)) < 0) { 580 syslog(LOG_ERR, 581 "can't create udp6 socket"); 582 nfsd_exit(1); 583 } 584 if (setsockopt(sock, IPPROTO_IPV6, IPV6_V6ONLY, 585 &on, sizeof on) < 0) { 586 syslog(LOG_ERR, 587 "can't set v6-only binding for " 588 "udp6 socket: %m"); 589 nfsd_exit(1); 590 } 591 if (bind(sock, ai_udp6->ai_addr, 592 ai_udp6->ai_addrlen) < 0) { 593 syslog(LOG_ERR, 594 "can't bind udp6 addr %s: %m", 595 bindhost[i]); 596 nfsd_exit(1); 597 } 598 freeaddrinfo(ai_udp6); 599 addsockargs.sock = sock; 600 addsockargs.name = NULL; 601 addsockargs.namelen = 0; 602 if (nfssvc(nfssvc_addsock, &addsockargs) < 0) { 603 syslog(LOG_ERR, 604 "can't add UDP6 socket"); 605 nfsd_exit(1); 606 } 607 (void)close(sock); 608 } 609 } 610 if (rpcbreg == 1) { 611 memset(&hints, 0, sizeof hints); 612 hints.ai_flags = AI_PASSIVE; 613 hints.ai_family = AF_INET6; 614 hints.ai_socktype = SOCK_DGRAM; 615 hints.ai_protocol = IPPROTO_UDP; 616 ecode = getaddrinfo(NULL, "nfs", &hints, &ai_udp6); 617 if (ecode != 0) { 618 syslog(LOG_ERR, "getaddrinfo udp6: %s", 619 gai_strerror(ecode)); 620 nfsd_exit(1); 621 } 622 nconf_udp6 = getnetconfigent("udp6"); 623 if (nconf_udp6 == NULL) 624 err(1, "getnetconfigent udp6 failed"); 625 nb_udp6.buf = ai_udp6->ai_addr; 626 nb_udp6.len = nb_udp6.maxlen = ai_udp6->ai_addrlen; 627 if (nfs_minvers == NFS_VER2) 628 if (!rpcb_set(NFS_PROGRAM, 2, nconf_udp6, 629 &nb_udp6)) 630 err(1, 631 "rpcb_set udp6 failed"); 632 if (nfs_minvers <= NFS_VER3) 633 if (!rpcb_set(NFS_PROGRAM, 3, nconf_udp6, 634 &nb_udp6)) 635 err(1, 636 "rpcb_set udp6 failed"); 637 freeaddrinfo(ai_udp6); 638 } 639 } 640 641 /* Set up the socket for tcp and rpcb register it. */ 642 if (tcpflag) { 643 rpcbreg = 0; 644 for (i = 0; i < bindhostc; i++) { 645 memset(&hints, 0, sizeof hints); 646 hints.ai_flags = AI_PASSIVE; 647 hints.ai_family = AF_INET; 648 hints.ai_socktype = SOCK_STREAM; 649 hints.ai_protocol = IPPROTO_TCP; 650 if (setbindhost(&ai_tcp, bindhost[i], hints) == 0) { 651 rpcbreg = 1; 652 rpcbregcnt++; 653 if ((tcpsock = socket(AF_INET, SOCK_STREAM, 654 0)) < 0) { 655 syslog(LOG_ERR, 656 "can't create tcp socket"); 657 nfsd_exit(1); 658 } 659 if (setsockopt(tcpsock, SOL_SOCKET, 660 SO_REUSEADDR, 661 (char *)&on, sizeof(on)) < 0) 662 syslog(LOG_ERR, 663 "setsockopt SO_REUSEADDR: %m"); 664 if (bind(tcpsock, ai_tcp->ai_addr, 665 ai_tcp->ai_addrlen) < 0) { 666 syslog(LOG_ERR, 667 "can't bind tcp addr %s: %m", 668 bindhost[i]); 669 nfsd_exit(1); 670 } 671 if (listen(tcpsock, -1) < 0) { 672 syslog(LOG_ERR, "listen failed"); 673 nfsd_exit(1); 674 } 675 freeaddrinfo(ai_tcp); 676 FD_SET(tcpsock, &sockbits); 677 maxsock = tcpsock; 678 connect_type_cnt++; 679 } 680 } 681 if (rpcbreg == 1) { 682 memset(&hints, 0, sizeof hints); 683 hints.ai_flags = AI_PASSIVE; 684 hints.ai_family = AF_INET; 685 hints.ai_socktype = SOCK_STREAM; 686 hints.ai_protocol = IPPROTO_TCP; 687 ecode = getaddrinfo(NULL, "nfs", &hints, 688 &ai_tcp); 689 if (ecode != 0) { 690 syslog(LOG_ERR, "getaddrinfo tcp: %s", 691 gai_strerror(ecode)); 692 nfsd_exit(1); 693 } 694 nconf_tcp = getnetconfigent("tcp"); 695 if (nconf_tcp == NULL) 696 err(1, "getnetconfigent tcp failed"); 697 nb_tcp.buf = ai_tcp->ai_addr; 698 nb_tcp.len = nb_tcp.maxlen = ai_tcp->ai_addrlen; 699 if (nfs_minvers == NFS_VER2) 700 if (!rpcb_set(NFS_PROGRAM, 2, nconf_tcp, 701 &nb_tcp)) 702 err(1, "rpcb_set tcp failed"); 703 if (nfs_minvers <= NFS_VER3) 704 if (!rpcb_set(NFS_PROGRAM, 3, nconf_tcp, 705 &nb_tcp)) 706 err(1, "rpcb_set tcp failed"); 707 freeaddrinfo(ai_tcp); 708 } 709 } 710 711 /* Set up the socket for tcp6 and rpcb register it. */ 712 if (tcpflag && ip6flag) { 713 rpcbreg = 0; 714 for (i = 0; i < bindhostc; i++) { 715 memset(&hints, 0, sizeof hints); 716 hints.ai_flags = AI_PASSIVE; 717 hints.ai_family = AF_INET6; 718 hints.ai_socktype = SOCK_STREAM; 719 hints.ai_protocol = IPPROTO_TCP; 720 if (setbindhost(&ai_tcp6, bindhost[i], hints) == 0) { 721 rpcbreg = 1; 722 rpcbregcnt++; 723 if ((tcp6sock = socket(ai_tcp6->ai_family, 724 ai_tcp6->ai_socktype, 725 ai_tcp6->ai_protocol)) < 0) { 726 syslog(LOG_ERR, 727 "can't create tcp6 socket"); 728 nfsd_exit(1); 729 } 730 if (setsockopt(tcp6sock, SOL_SOCKET, 731 SO_REUSEADDR, 732 (char *)&on, sizeof(on)) < 0) 733 syslog(LOG_ERR, 734 "setsockopt SO_REUSEADDR: %m"); 735 if (setsockopt(tcp6sock, IPPROTO_IPV6, 736 IPV6_V6ONLY, &on, sizeof on) < 0) { 737 syslog(LOG_ERR, 738 "can't set v6-only binding for tcp6 " 739 "socket: %m"); 740 nfsd_exit(1); 741 } 742 if (bind(tcp6sock, ai_tcp6->ai_addr, 743 ai_tcp6->ai_addrlen) < 0) { 744 syslog(LOG_ERR, 745 "can't bind tcp6 addr %s: %m", 746 bindhost[i]); 747 nfsd_exit(1); 748 } 749 if (listen(tcp6sock, -1) < 0) { 750 syslog(LOG_ERR, "listen failed"); 751 nfsd_exit(1); 752 } 753 freeaddrinfo(ai_tcp6); 754 FD_SET(tcp6sock, &sockbits); 755 if (maxsock < tcp6sock) 756 maxsock = tcp6sock; 757 connect_type_cnt++; 758 } 759 } 760 if (rpcbreg == 1) { 761 memset(&hints, 0, sizeof hints); 762 hints.ai_flags = AI_PASSIVE; 763 hints.ai_family = AF_INET6; 764 hints.ai_socktype = SOCK_STREAM; 765 hints.ai_protocol = IPPROTO_TCP; 766 ecode = getaddrinfo(NULL, "nfs", &hints, &ai_tcp6); 767 if (ecode != 0) { 768 syslog(LOG_ERR, "getaddrinfo tcp6: %s", 769 gai_strerror(ecode)); 770 nfsd_exit(1); 771 } 772 nconf_tcp6 = getnetconfigent("tcp6"); 773 if (nconf_tcp6 == NULL) 774 err(1, "getnetconfigent tcp6 failed"); 775 nb_tcp6.buf = ai_tcp6->ai_addr; 776 nb_tcp6.len = nb_tcp6.maxlen = ai_tcp6->ai_addrlen; 777 if (nfs_minvers == NFS_VER2) 778 if (!rpcb_set(NFS_PROGRAM, 2, nconf_tcp6, 779 &nb_tcp6)) 780 err(1, "rpcb_set tcp6 failed"); 781 if (nfs_minvers <= NFS_VER3) 782 if (!rpcb_set(NFS_PROGRAM, 3, nconf_tcp6, 783 &nb_tcp6)) 784 err(1, "rpcb_set tcp6 failed"); 785 freeaddrinfo(ai_tcp6); 786 } 787 } 788 789 if (rpcbregcnt == 0) { 790 syslog(LOG_ERR, "rpcb_set() failed, nothing to do: %m"); 791 nfsd_exit(1); 792 } 793 794 if (tcpflag && connect_type_cnt == 0) { 795 syslog(LOG_ERR, "tcp connects == 0, nothing to do: %m"); 796 nfsd_exit(1); 797 } 798 799 setproctitle("master"); 800 /* 801 * We always want a master to have a clean way to shut nfsd down 802 * (with unregistration): if the master is killed, it unregisters and 803 * kills all children. If we run for UDP only (and so do not have to 804 * loop waiting for accept), we instead make the parent 805 * a "server" too. start_server will not return. 806 */ 807 if (!tcpflag) 808 start_server(1, &nfsdargs, vhostname); 809 810 /* 811 * Loop forever accepting connections and passing the sockets 812 * into the kernel for the mounts. 813 */ 814 for (;;) { 815 ready = sockbits; 816 if (connect_type_cnt > 1) { 817 if (select(maxsock + 1, 818 &ready, NULL, NULL, NULL) < 1) { 819 error = errno; 820 if (error == EINTR) 821 continue; 822 syslog(LOG_ERR, "select failed: %m"); 823 nfsd_exit(1); 824 } 825 } 826 for (tcpsock = 0; tcpsock <= maxsock; tcpsock++) { 827 if (FD_ISSET(tcpsock, &ready)) { 828 len = sizeof(peer); 829 if ((msgsock = accept(tcpsock, 830 (struct sockaddr *)&peer, &len)) < 0) { 831 error = errno; 832 syslog(LOG_ERR, "accept failed: %m"); 833 if (error == ECONNABORTED || 834 error == EINTR) 835 continue; 836 nfsd_exit(1); 837 } 838 if (setsockopt(msgsock, SOL_SOCKET, 839 SO_KEEPALIVE, (char *)&on, sizeof(on)) < 0) 840 syslog(LOG_ERR, 841 "setsockopt SO_KEEPALIVE: %m"); 842 addsockargs.sock = msgsock; 843 addsockargs.name = (caddr_t)&peer; 844 addsockargs.namelen = len; 845 nfssvc(nfssvc_addsock, &addsockargs); 846 (void)close(msgsock); 847 } 848 } 849 } 850} 851 852static int 853setbindhost(struct addrinfo **ai, const char *bindhost, struct addrinfo hints) 854{ 855 int ecode; 856 u_int32_t host_addr[4]; /* IPv4 or IPv6 */ 857 const char *hostptr; 858 859 if (bindhost == NULL || strcmp("*", bindhost) == 0) 860 hostptr = NULL; 861 else 862 hostptr = bindhost; 863 864 if (hostptr != NULL) { 865 switch (hints.ai_family) { 866 case AF_INET: 867 if (inet_pton(AF_INET, hostptr, host_addr) == 1) { 868 hints.ai_flags = AI_NUMERICHOST; 869 } else { 870 if (inet_pton(AF_INET6, hostptr, 871 host_addr) == 1) 872 return (1); 873 } 874 break; 875 case AF_INET6: 876 if (inet_pton(AF_INET6, hostptr, host_addr) == 1) { 877 hints.ai_flags = AI_NUMERICHOST; 878 } else { 879 if (inet_pton(AF_INET, hostptr, 880 host_addr) == 1) 881 return (1); 882 } 883 break; 884 default: 885 break; 886 } 887 } 888 889 ecode = getaddrinfo(hostptr, "nfs", &hints, ai); 890 if (ecode != 0) { 891 syslog(LOG_ERR, "getaddrinfo %s: %s", bindhost, 892 gai_strerror(ecode)); 893 return (1); 894 } 895 return (0); 896} 897 898static void 899set_nfsdcnt(int proposed) 900{ 901 902 if (proposed < 1) { 903 warnx("nfsd count too low %d; reset to %d", proposed, 904 DEFNFSDCNT); 905 nfsdcnt = DEFNFSDCNT; 906 } else if (proposed > MAXNFSDCNT) { 907 warnx("nfsd count too high %d; truncated to %d", proposed, 908 MAXNFSDCNT); 909 nfsdcnt = MAXNFSDCNT; 910 } else 911 nfsdcnt = proposed; 912 nfsdcnt_set = 1; 913} 914 915static void 916usage(void) 917{ 918 (void)fprintf(stderr, "%s", getopt_usage); 919 exit(1); 920} 921 922static void 923nonfs(__unused int signo) 924{ 925 syslog(LOG_ERR, "missing system call: NFS not available"); 926} 927 928static void 929reapchild(__unused int signo) 930{ 931 pid_t pid; 932 int i; 933 934 while ((pid = wait3(NULL, WNOHANG, NULL)) > 0) { 935 for (i = 0; i < nfsdcnt; i++) 936 if (pid == children[i]) 937 children[i] = -1; 938 } 939} 940 941static void 942unregistration(void) 943{ 944 if ((nfs_minvers == NFS_VER2 && !rpcb_unset(NFS_PROGRAM, 2, NULL)) || 945 (nfs_minvers <= NFS_VER3 && !rpcb_unset(NFS_PROGRAM, 3, NULL))) 946 syslog(LOG_ERR, "rpcb_unset failed"); 947} 948 949static void 950killchildren(void) 951{ 952 int i; 953 954 for (i = 0; i < nfsdcnt; i++) { 955 if (children[i] > 0) 956 kill(children[i], SIGKILL); 957 } 958} 959 960/* 961 * Cleanup master after SIGUSR1. 962 */ 963static void 964cleanup(__unused int signo) 965{ 966 nfsd_exit(0); 967} 968 969/* 970 * Cleanup child after SIGUSR1. 971 */ 972static void 973child_cleanup(__unused int signo) 974{ 975 exit(0); 976} 977 978static void 979nfsd_exit(int status) 980{ 981 killchildren(); 982 unregistration(); 983 exit(status); 984} 985 986static int 987get_tuned_nfsdcount(void) 988{ 989 int ncpu, error, tuned_nfsdcnt; 990 size_t ncpu_size; 991 992 ncpu_size = sizeof(ncpu); 993 error = sysctlbyname("hw.ncpu", &ncpu, &ncpu_size, NULL, 0); 994 if (error) { 995 warnx("sysctlbyname(hw.ncpu) failed defaulting to %d nfs servers", 996 DEFNFSDCNT); 997 tuned_nfsdcnt = DEFNFSDCNT; 998 } else { 999 tuned_nfsdcnt = ncpu * 8; 1000 } 1001 return tuned_nfsdcnt; 1002} 1003 1004static void 1005start_server(int master, struct nfsd_nfsd_args *nfsdargp, const char *vhost) 1006{ 1007 char principal[MAXHOSTNAMELEN + 5]; 1008 int status, error; 1009 char hostname[MAXHOSTNAMELEN + 1], *cp; 1010 struct addrinfo *aip, hints; 1011 1012 status = 0; 1013 if (vhost == NULL) 1014 gethostname(hostname, sizeof (hostname)); 1015 else 1016 strlcpy(hostname, vhost, sizeof (hostname)); 1017 snprintf(principal, sizeof (principal), "nfs@%s", hostname); 1018 if ((cp = strchr(hostname, '.')) == NULL || 1019 *(cp + 1) == '\0') { 1020 /* If not fully qualified, try getaddrinfo() */ 1021 memset((void *)&hints, 0, sizeof (hints)); 1022 hints.ai_flags = AI_CANONNAME; 1023 error = getaddrinfo(hostname, NULL, &hints, &aip); 1024 if (error == 0) { 1025 if (aip->ai_canonname != NULL && 1026 (cp = strchr(aip->ai_canonname, '.')) != 1027 NULL && *(cp + 1) != '\0') 1028 snprintf(principal, sizeof (principal), 1029 "nfs@%s", aip->ai_canonname); 1030 freeaddrinfo(aip); 1031 } 1032 } 1033 nfsdargp->principal = principal; 1034 1035 if (nfsdcnt_set) 1036 nfsdargp->minthreads = nfsdargp->maxthreads = nfsdcnt; 1037 else { 1038 nfsdargp->minthreads = minthreads_set ? minthreads : get_tuned_nfsdcount(); 1039 nfsdargp->maxthreads = maxthreads_set ? maxthreads : nfsdargp->minthreads; 1040 if (nfsdargp->maxthreads < nfsdargp->minthreads) 1041 nfsdargp->maxthreads = nfsdargp->minthreads; 1042 } 1043 error = nfssvc(nfssvc_nfsd, nfsdargp); 1044 if (error < 0 && errno == EAUTH) { 1045 /* 1046 * This indicates that it could not register the 1047 * rpcsec_gss credentials, usually because the 1048 * gssd daemon isn't running. 1049 * (only the experimental server with nfsv4) 1050 */ 1051 syslog(LOG_ERR, "No gssd, using AUTH_SYS only"); 1052 principal[0] = '\0'; 1053 error = nfssvc(nfssvc_nfsd, nfsdargp); 1054 } 1055 if (error < 0) { 1056 if (errno == ENXIO) { 1057 syslog(LOG_ERR, "Bad -p option, cannot run"); 1058 if (masterpid != 0 && master == 0) 1059 kill(masterpid, SIGUSR1); 1060 } else 1061 syslog(LOG_ERR, "nfssvc: %m"); 1062 status = 1; 1063 } 1064 if (master) 1065 nfsd_exit(status); 1066 else 1067 exit(status); 1068} 1069 1070/* 1071 * Open the stable restart file and return the file descriptor for it. 1072 */ 1073static void 1074open_stable(int *stable_fdp, int *backup_fdp) 1075{ 1076 int stable_fd, backup_fd = -1, ret; 1077 struct stat st, backup_st; 1078 1079 /* Open and stat the stable restart file. */ 1080 stable_fd = open(NFSD_STABLERESTART, O_RDWR, 0); 1081 if (stable_fd < 0) 1082 stable_fd = open(NFSD_STABLERESTART, O_RDWR | O_CREAT, 0600); 1083 if (stable_fd >= 0) { 1084 ret = fstat(stable_fd, &st); 1085 if (ret < 0) { 1086 close(stable_fd); 1087 stable_fd = -1; 1088 } 1089 } 1090 1091 /* Open and stat the backup stable restart file. */ 1092 if (stable_fd >= 0) { 1093 backup_fd = open(NFSD_STABLEBACKUP, O_RDWR, 0); 1094 if (backup_fd < 0) 1095 backup_fd = open(NFSD_STABLEBACKUP, O_RDWR | O_CREAT, 1096 0600); 1097 if (backup_fd >= 0) { 1098 ret = fstat(backup_fd, &backup_st); 1099 if (ret < 0) { 1100 close(backup_fd); 1101 backup_fd = -1; 1102 } 1103 } 1104 if (backup_fd < 0) { 1105 close(stable_fd); 1106 stable_fd = -1; 1107 } 1108 } 1109 1110 *stable_fdp = stable_fd; 1111 *backup_fdp = backup_fd; 1112 if (stable_fd < 0) 1113 return; 1114 1115 /* Sync up the 2 files, as required. */ 1116 if (st.st_size > 0) 1117 copy_stable(stable_fd, backup_fd); 1118 else if (backup_st.st_size > 0) 1119 copy_stable(backup_fd, stable_fd); 1120} 1121 1122/* 1123 * Copy the stable restart file to the backup or vice versa. 1124 */ 1125static void 1126copy_stable(int from_fd, int to_fd) 1127{ 1128 int cnt, ret; 1129 static char buf[1024]; 1130 1131 ret = lseek(from_fd, (off_t)0, SEEK_SET); 1132 if (ret >= 0) 1133 ret = lseek(to_fd, (off_t)0, SEEK_SET); 1134 if (ret >= 0) 1135 ret = ftruncate(to_fd, (off_t)0); 1136 if (ret >= 0) 1137 do { 1138 cnt = read(from_fd, buf, 1024); 1139 if (cnt > 0) 1140 ret = write(to_fd, buf, cnt); 1141 else if (cnt < 0) 1142 ret = cnt; 1143 } while (cnt > 0 && ret >= 0); 1144 if (ret >= 0) 1145 ret = fsync(to_fd); 1146 if (ret < 0) 1147 syslog(LOG_ERR, "stable restart copy failure: %m"); 1148} 1149 1150/* 1151 * Back up the stable restart file when indicated by the kernel. 1152 */ 1153static void 1154backup_stable(__unused int signo) 1155{ 1156 1157 if (stablefd >= 0) 1158 copy_stable(stablefd, backupfd); 1159} 1160 1161/* 1162 * Parse the pNFS string and extract the DS servers and ports numbers. 1163 */ 1164static void 1165parse_dsserver(const char *optionarg, struct nfsd_nfsd_args *nfsdargp) 1166{ 1167 char *cp, *cp2, *dsaddr, *dshost, *dspath, *dsvol, nfsprt[9]; 1168 char *mdspath, *mdsp, ip6[INET6_ADDRSTRLEN]; 1169 const char *ad; 1170 int ecode; 1171 u_int adsiz, dsaddrcnt, dshostcnt, dspathcnt, hostsiz, pathsiz; 1172 u_int mdspathcnt; 1173 size_t dsaddrsiz, dshostsiz, dspathsiz, nfsprtsiz, mdspathsiz; 1174 struct addrinfo hints, *ai_tcp, *res; 1175 struct sockaddr_in sin; 1176 struct sockaddr_in6 sin6; 1177 1178 cp = strdup(optionarg); 1179 if (cp == NULL) 1180 errx(1, "Out of memory"); 1181 1182 /* Now, do the host names. */ 1183 dspathsiz = 1024; 1184 dspathcnt = 0; 1185 dspath = malloc(dspathsiz); 1186 if (dspath == NULL) 1187 errx(1, "Out of memory"); 1188 dshostsiz = 1024; 1189 dshostcnt = 0; 1190 dshost = malloc(dshostsiz); 1191 if (dshost == NULL) 1192 errx(1, "Out of memory"); 1193 dsaddrsiz = 1024; 1194 dsaddrcnt = 0; 1195 dsaddr = malloc(dsaddrsiz); 1196 if (dsaddr == NULL) 1197 errx(1, "Out of memory"); 1198 mdspathsiz = 1024; 1199 mdspathcnt = 0; 1200 mdspath = malloc(mdspathsiz); 1201 if (mdspath == NULL) 1202 errx(1, "Out of memory"); 1203 1204 /* Put the NFS port# in "." form. */ 1205 snprintf(nfsprt, 9, ".%d.%d", 2049 >> 8, 2049 & 0xff); 1206 nfsprtsiz = strlen(nfsprt); 1207 1208 ai_tcp = NULL; 1209 /* Loop around for each DS server name. */ 1210 do { 1211 cp2 = strchr(cp, ','); 1212 if (cp2 != NULL) { 1213 /* Not the last DS in the list. */ 1214 *cp2++ = '\0'; 1215 if (*cp2 == '\0') 1216 usage(); 1217 } 1218 1219 dsvol = strchr(cp, ':'); 1220 if (dsvol == NULL || *(dsvol + 1) == '\0') 1221 usage(); 1222 *dsvol++ = '\0'; 1223 1224 /* Optional path for MDS file system to be stored on DS. */ 1225 mdsp = strchr(dsvol, '#'); 1226 if (mdsp != NULL) { 1227 if (*(mdsp + 1) == '\0' || mdsp <= dsvol) 1228 usage(); 1229 *mdsp++ = '\0'; 1230 } 1231 1232 /* Append this pathname to dspath. */ 1233 pathsiz = strlen(dsvol); 1234 if (dspathcnt + pathsiz + 1 > dspathsiz) { 1235 dspathsiz *= 2; 1236 dspath = realloc(dspath, dspathsiz); 1237 if (dspath == NULL) 1238 errx(1, "Out of memory"); 1239 } 1240 strcpy(&dspath[dspathcnt], dsvol); 1241 dspathcnt += pathsiz + 1; 1242 1243 /* Append this pathname to mdspath. */ 1244 if (mdsp != NULL) 1245 pathsiz = strlen(mdsp); 1246 else 1247 pathsiz = 0; 1248 if (mdspathcnt + pathsiz + 1 > mdspathsiz) { 1249 mdspathsiz *= 2; 1250 mdspath = realloc(mdspath, mdspathsiz); 1251 if (mdspath == NULL) 1252 errx(1, "Out of memory"); 1253 } 1254 if (mdsp != NULL) 1255 strcpy(&mdspath[mdspathcnt], mdsp); 1256 else 1257 mdspath[mdspathcnt] = '\0'; 1258 mdspathcnt += pathsiz + 1; 1259 1260 if (ai_tcp != NULL) 1261 freeaddrinfo(ai_tcp); 1262 1263 /* Get the fully qualified domain name and IP address. */ 1264 memset(&hints, 0, sizeof(hints)); 1265 hints.ai_flags = AI_CANONNAME | AI_ADDRCONFIG; 1266 hints.ai_family = PF_UNSPEC; 1267 hints.ai_socktype = SOCK_STREAM; 1268 hints.ai_protocol = IPPROTO_TCP; 1269 ecode = getaddrinfo(cp, NULL, &hints, &ai_tcp); 1270 if (ecode != 0) 1271 err(1, "getaddrinfo pnfs: %s %s", cp, 1272 gai_strerror(ecode)); 1273 ad = NULL; 1274 for (res = ai_tcp; res != NULL; res = res->ai_next) { 1275 if (res->ai_addr->sa_family == AF_INET) { 1276 if (res->ai_addrlen < sizeof(sin)) 1277 err(1, "getaddrinfo() returned " 1278 "undersized IPv4 address"); 1279 /* 1280 * Mips cares about sockaddr_in alignment, 1281 * so copy the address. 1282 */ 1283 memcpy(&sin, res->ai_addr, sizeof(sin)); 1284 ad = inet_ntoa(sin.sin_addr); 1285 break; 1286 } else if (res->ai_family == AF_INET6) { 1287 if (res->ai_addrlen < sizeof(sin6)) 1288 err(1, "getaddrinfo() returned " 1289 "undersized IPv6 address"); 1290 /* 1291 * Mips cares about sockaddr_in6 alignment, 1292 * so copy the address. 1293 */ 1294 memcpy(&sin6, res->ai_addr, sizeof(sin6)); 1295 ad = inet_ntop(AF_INET6, &sin6.sin6_addr, ip6, 1296 sizeof(ip6)); 1297 1298 /* 1299 * XXX 1300 * Since a link local address will only 1301 * work if the client and DS are in the 1302 * same scope zone, only use it if it is 1303 * the only address. 1304 */ 1305 if (ad != NULL && 1306 !IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr)) 1307 break; 1308 } 1309 } 1310 if (ad == NULL) 1311 err(1, "No IP address for %s", cp); 1312 1313 /* Append this address to dsaddr. */ 1314 adsiz = strlen(ad); 1315 if (dsaddrcnt + adsiz + nfsprtsiz + 1 > dsaddrsiz) { 1316 dsaddrsiz *= 2; 1317 dsaddr = realloc(dsaddr, dsaddrsiz); 1318 if (dsaddr == NULL) 1319 errx(1, "Out of memory"); 1320 } 1321 strcpy(&dsaddr[dsaddrcnt], ad); 1322 strcat(&dsaddr[dsaddrcnt], nfsprt); 1323 dsaddrcnt += adsiz + nfsprtsiz + 1; 1324 1325 /* Append this hostname to dshost. */ 1326 hostsiz = strlen(ai_tcp->ai_canonname); 1327 if (dshostcnt + hostsiz + 1 > dshostsiz) { 1328 dshostsiz *= 2; 1329 dshost = realloc(dshost, dshostsiz); 1330 if (dshost == NULL) 1331 errx(1, "Out of memory"); 1332 } 1333 strcpy(&dshost[dshostcnt], ai_tcp->ai_canonname); 1334 dshostcnt += hostsiz + 1; 1335 1336 cp = cp2; 1337 } while (cp != NULL); 1338 1339 nfsdargp->addr = dsaddr; 1340 nfsdargp->addrlen = dsaddrcnt; 1341 nfsdargp->dnshost = dshost; 1342 nfsdargp->dnshostlen = dshostcnt; 1343 nfsdargp->dspath = dspath; 1344 nfsdargp->dspathlen = dspathcnt; 1345 nfsdargp->mdspath = mdspath; 1346 nfsdargp->mdspathlen = mdspathcnt; 1347 freeaddrinfo(ai_tcp); 1348} 1349 1350