1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 28 /* All Rights Reserved */ 29 30 /* 31 * University Copyright- Copyright (c) 1982, 1986, 1988 32 * The Regents of the University of California 33 * All Rights Reserved 34 * 35 * University Acknowledgment- Portions of this document are derived from 36 * software developed by the University of California, Berkeley, and its 37 * contributors. 38 */ 39 40 #pragma ident "%Z%%M% %I% %E% SMI" 41 42 /* 43 * nfs mount 44 */ 45 46 #define NFSCLIENT 47 #include <locale.h> 48 #include <stdio.h> 49 #include <string.h> 50 #include <memory.h> 51 #include <stdarg.h> 52 #include <unistd.h> 53 #include <ctype.h> 54 #include <stdlib.h> 55 #include <signal.h> 56 #include <sys/param.h> 57 #include <rpc/rpc.h> 58 #include <errno.h> 59 #include <sys/stat.h> 60 #include <netdb.h> 61 #include <sys/mount.h> 62 #include <sys/mntent.h> 63 #include <sys/mnttab.h> 64 #include <nfs/nfs.h> 65 #include <nfs/mount.h> 66 #include <rpcsvc/mount.h> 67 #include <sys/pathconf.h> 68 #include <netdir.h> 69 #include <netconfig.h> 70 #include <sys/sockio.h> 71 #include <net/if.h> 72 #include <syslog.h> 73 #include <fslib.h> 74 #include <deflt.h> 75 #include <sys/wait.h> 76 #include "replica.h" 77 #include <netinet/in.h> 78 #include <nfs/nfs_sec.h> 79 #include <rpcsvc/daemon_utils.h> 80 #include <priv.h> 81 #include <tsol/label.h> 82 #include "nfs_subr.h" 83 #include "webnfs.h" 84 #include <rpcsvc/nfs4_prot.h> 85 86 #include <nfs/nfssys.h> 87 extern int _nfssys(enum nfssys_op, void *); 88 89 #ifndef NFS_VERSMAX 90 #define NFS_VERSMAX 4 91 #endif 92 #ifndef NFS_VERSMIN 93 #define NFS_VERSMIN 2 94 #endif 95 96 #define RET_OK 0 97 #define RET_RETRY 32 98 #define RET_ERR 33 99 #define RET_MNTERR 1000 100 #define ERR_PROTO_NONE 0 101 #define ERR_PROTO_INVALID 901 102 #define ERR_PROTO_UNSUPP 902 103 #define ERR_NETPATH 903 104 #define ERR_NOHOST 904 105 #define ERR_RPCERROR 905 106 107 typedef struct err_ret { 108 int error_type; 109 int error_value; 110 } err_ret_t; 111 112 #define SET_ERR_RET(errst, etype, eval) \ 113 if (errst) { \ 114 (errst)->error_type = etype; \ 115 (errst)->error_value = eval; \ 116 } 117 118 /* number of transports to try */ 119 #define MNT_PREF_LISTLEN 2 120 #define FIRST_TRY 1 121 #define SECOND_TRY 2 122 123 #define BIGRETRY 10000 124 125 /* maximum length of RPC header for NFS messages */ 126 #define NFS_RPC_HDR 432 127 128 #define NFS_ARGS_EXTB_secdata(args, secdata) \ 129 { (args)->nfs_args_ext = NFS_ARGS_EXTB, \ 130 (args)->nfs_ext_u.nfs_extB.secdata = secdata; } 131 132 extern int __clnt_bindresvport(CLIENT *); 133 extern char *nfs_get_qop_name(); 134 extern AUTH * nfs_create_ah(); 135 extern enum snego_stat nfs_sec_nego(); 136 137 static void usage(void); 138 static int retry(struct mnttab *, int); 139 static int set_args(int *, struct nfs_args *, char *, struct mnttab *); 140 static int get_fh_via_pub(struct nfs_args *, char *, char *, bool_t, bool_t, 141 int *, struct netconfig **, ushort_t); 142 static int get_fh(struct nfs_args *, char *, char *, int *, bool_t, 143 struct netconfig **, ushort_t); 144 static int make_secure(struct nfs_args *, char *, struct netconfig *, 145 bool_t, rpcvers_t); 146 static int mount_nfs(struct mnttab *, int, err_ret_t *); 147 static int getaddr_nfs(struct nfs_args *, char *, struct netconfig **, 148 bool_t, char *, ushort_t, err_ret_t *, bool_t); 149 static void pr_err(const char *fmt, ...); 150 static void usage(void); 151 static struct netbuf *get_addr(char *, rpcprog_t, rpcvers_t, 152 struct netconfig **, char *, ushort_t, struct t_info *, 153 caddr_t *, bool_t, char *, err_ret_t *); 154 155 static struct netbuf *get_the_addr(char *, rpcprog_t, rpcvers_t, 156 struct netconfig *, ushort_t, struct t_info *, caddr_t *, 157 bool_t, char *, err_ret_t *); 158 159 extern int self_check(char *); 160 161 static void read_default(void); 162 163 static char typename[64]; 164 165 static int bg = 0; 166 static int backgrounded = 0; 167 static int posix = 0; 168 static int retries = BIGRETRY; 169 static ushort_t nfs_port = 0; 170 static char *nfs_proto = NULL; 171 172 static int mflg = 0; 173 static int Oflg = 0; /* Overlay mounts */ 174 static int qflg = 0; /* quiet - don't print warnings on bad options */ 175 176 static char *fstype = MNTTYPE_NFS; 177 178 static seconfig_t nfs_sec; 179 static int sec_opt = 0; /* any security option ? */ 180 static bool_t snego_done; 181 static void sigusr1(int); 182 183 extern void set_nfsv4_ephemeral_mount_to(void); 184 185 /* 186 * list of support services needed 187 */ 188 static char *service_list[] = { STATD, LOCKD, NULL }; 189 static char *service_list_v4[] = { STATD, LOCKD, NFS4CBD, NFSMAPID, NULL }; 190 191 /* 192 * These two variables control the NFS version number to be used. 193 * 194 * nfsvers defaults to 0 which means to use the highest number that 195 * both the client and the server support. It can also be set to 196 * a particular value, either 2, 3, or 4 to indicate the version 197 * number of choice. If the server (or the client) do not support 198 * the version indicated, then the mount attempt will be failed. 199 * 200 * nfsvers_to_use is the actual version number found to use. It 201 * is determined in get_fh by pinging the various versions of the 202 * NFS service on the server to see which responds positively. 203 * 204 * nfsretry_vers is the version number set when we retry the mount 205 * command with the version decremented from nfsvers_to_use. 206 * nfsretry_vers is set from nfsvers_to_use when we retry the mount 207 * for errors other than RPC errors; it helps un know why we are 208 * retrying. It is an indication that the retry is due to 209 * non-RPC errors. 210 */ 211 static rpcvers_t nfsvers = 0; 212 static rpcvers_t nfsvers_to_use = 0; 213 static rpcvers_t nfsretry_vers = 0; 214 215 /* 216 * There are the defaults (range) for the client when determining 217 * which NFS version to use when probing the server (see above). 218 * These will only be used when the vers mount option is not used and 219 * these may be reset if /etc/default/nfs is configured to do so. 220 */ 221 static rpcvers_t vers_max_default = NFS_VERSMAX_DEFAULT; 222 static rpcvers_t vers_min_default = NFS_VERSMIN_DEFAULT; 223 224 /* 225 * This variable controls whether to try the public file handle. 226 */ 227 static bool_t public_opt; 228 229 int 230 main(int argc, char *argv[]) 231 { 232 struct mnttab mnt; 233 extern char *optarg; 234 extern int optind; 235 char optbuf[MAX_MNTOPT_STR]; 236 int ro = 0; 237 int r; 238 int c; 239 char *myname; 240 err_ret_t retry_error; 241 242 (void) setlocale(LC_ALL, ""); 243 #if !defined(TEXT_DOMAIN) 244 #define TEXT_DOMAIN "SYS_TEST" 245 #endif 246 (void) textdomain(TEXT_DOMAIN); 247 248 myname = strrchr(argv[0], '/'); 249 myname = myname ? myname + 1 : argv[0]; 250 (void) snprintf(typename, sizeof (typename), "%s %s", 251 MNTTYPE_NFS, myname); 252 argv[0] = typename; 253 254 mnt.mnt_mntopts = optbuf; 255 (void) strcpy(optbuf, "rw"); 256 257 /* 258 * Set options 259 */ 260 while ((c = getopt(argc, argv, "ro:mOq")) != EOF) { 261 switch (c) { 262 case 'r': 263 ro++; 264 break; 265 case 'o': 266 if (strlen(optarg) >= MAX_MNTOPT_STR) { 267 pr_err(gettext("option string too long")); 268 return (RET_ERR); 269 } 270 (void) strcpy(mnt.mnt_mntopts, optarg); 271 #ifdef LATER /* XXX */ 272 if (strstr(optarg, MNTOPT_REMOUNT)) { 273 /* 274 * If remount is specified, only rw is allowed. 275 */ 276 if ((strcmp(optarg, MNTOPT_REMOUNT) != 0) && 277 (strcmp(optarg, "remount,rw") != 0) && 278 (strcmp(optarg, "rw,remount") != 0)) { 279 pr_err(gettext("Invalid options\n")); 280 exit(RET_ERR); 281 } 282 } 283 #endif /* LATER */ /* XXX */ 284 break; 285 case 'm': 286 mflg++; 287 break; 288 case 'O': 289 Oflg++; 290 break; 291 case 'q': 292 qflg++; 293 break; 294 default: 295 usage(); 296 exit(RET_ERR); 297 } 298 } 299 if (argc - optind != 2) { 300 usage(); 301 exit(RET_ERR); 302 } 303 304 mnt.mnt_special = argv[optind]; 305 mnt.mnt_mountp = argv[optind+1]; 306 307 if (!priv_ineffect(PRIV_SYS_MOUNT) || 308 !priv_ineffect(PRIV_NET_PRIVADDR)) { 309 pr_err(gettext("insufficient privileges\n")); 310 exit(RET_ERR); 311 } 312 313 /* 314 * On a labeled system, allow read-down nfs mounts if privileged 315 * (PRIV_NET_MAC_AWARE) to do so. Otherwise, ignore the error 316 * and "mount equal label only" behavior will result. 317 */ 318 if (is_system_labeled()) 319 (void) setpflags(NET_MAC_AWARE, 1); 320 321 /* 322 * Read the defaults file to see if the min/max versions have 323 * been set and therefore would override the encoded defaults. 324 * Then check to make sure that if they were set that the 325 * values are reasonable. 326 */ 327 read_default(); 328 if (vers_min_default > vers_max_default || 329 vers_min_default < NFS_VERSMIN || 330 vers_max_default > NFS_VERSMAX) { 331 pr_err("%s %s\n%s %s\n", 332 gettext("Incorrect configuration of client\'s"), 333 NFSADMIN, 334 gettext("NFS_CLIENT_VERSMIN or NFS_CLIENT_VERSMAX"), 335 gettext("is either out of range or overlaps.")); 336 } 337 338 SET_ERR_RET(&retry_error, ERR_PROTO_NONE, 0); 339 r = mount_nfs(&mnt, ro, &retry_error); 340 if (r == RET_RETRY && retries) { 341 /* 342 * Check the error code from the last mount attempt if it was 343 * an RPC error, then retry as is. Otherwise we retry with the 344 * nfsretry_vers set. It is set by decrementing nfsvers_to_use. 345 * If we are retrying with nfsretry_vers then we don't print any 346 * retry messages, since we are not retrying due to an RPC 347 * error. 348 */ 349 if (retry_error.error_type) { 350 if (retry_error.error_type != ERR_RPCERROR) { 351 nfsretry_vers = nfsvers_to_use = 352 nfsvers_to_use - 1; 353 if (nfsretry_vers < NFS_VERSMIN) 354 return (r); 355 } 356 } 357 358 r = retry(&mnt, ro); 359 } 360 /* 361 * exit(r); 362 */ 363 return (r); 364 } 365 366 static void 367 pr_err(const char *fmt, ...) 368 { 369 va_list ap; 370 371 va_start(ap, fmt); 372 if (backgrounded != 0) { 373 (void) vsyslog(LOG_ERR, fmt, ap); 374 } else { 375 (void) fprintf(stderr, "%s: ", typename); 376 (void) vfprintf(stderr, fmt, ap); 377 (void) fflush(stderr); 378 } 379 va_end(ap); 380 } 381 382 static void 383 usage() 384 { 385 (void) fprintf(stderr, 386 gettext("Usage: nfs mount [-r] [-o opts] [server:]path dir\n")); 387 exit(RET_ERR); 388 } 389 390 static int 391 mount_nfs(struct mnttab *mntp, int ro, err_ret_t *retry_error) 392 { 393 struct nfs_args *args = NULL, *argp = NULL, *prev_argp = NULL; 394 struct netconfig *nconf = NULL; 395 struct replica *list = NULL; 396 int mntflags = 0; 397 int i, r, n; 398 int oldvers = 0, vers = 0; 399 int last_error = RET_OK; 400 int replicated = 0; 401 char *p; 402 bool_t url; 403 bool_t use_pubfh; 404 char *special = NULL; 405 char *oldpath = NULL; 406 char *newpath = NULL; 407 char *service; 408 pid_t pi; 409 struct flock f; 410 char *saveopts = NULL; 411 char **sl = NULL; 412 413 mntp->mnt_fstype = MNTTYPE_NFS; 414 415 if (ro) { 416 mntflags |= MS_RDONLY; 417 /* convert "rw"->"ro" */ 418 if (p = strstr(mntp->mnt_mntopts, "rw")) { 419 if (*(p+2) == ',' || *(p+2) == '\0') 420 *(p+1) = 'o'; 421 } 422 } 423 424 if (Oflg) 425 mntflags |= MS_OVERLAY; 426 427 list = parse_replica(mntp->mnt_special, &n); 428 if (list == NULL) { 429 if (n < 0) 430 pr_err(gettext("nfs file system; use [host:]path\n")); 431 else 432 pr_err(gettext("no memory\n")); 433 return (RET_ERR); 434 } 435 436 replicated = (n > 1); 437 438 /* 439 * There are some free() calls at the bottom of this loop, so be 440 * careful about adding continue statements. 441 */ 442 for (i = 0; i < n; i++) { 443 char *path; 444 char *host; 445 ushort_t port; 446 447 argp = (struct nfs_args *)malloc(sizeof (*argp)); 448 if (argp == NULL) { 449 pr_err(gettext("no memory\n")); 450 last_error = RET_ERR; 451 goto out; 452 } 453 memset(argp, 0, sizeof (*argp)); 454 455 memset(&nfs_sec, 0, sizeof (nfs_sec)); 456 sec_opt = 0; 457 use_pubfh = FALSE; 458 url = FALSE; 459 port = 0; 460 snego_done = FALSE; 461 462 /* 463 * Looking for resources of the form 464 * nfs://server_host[:port_number]/path_name 465 */ 466 if (strcmp(list[i].host, "nfs") == 0 && strncmp(list[i].path, 467 "//", 2) == 0) { 468 char *sport, *cb; 469 url = TRUE; 470 oldpath = strdup(list[i].path); 471 if (oldpath == NULL) { 472 pr_err(gettext("memory allocation failure\n")); 473 last_error = RET_ERR; 474 goto out; 475 } 476 host = list[i].path+2; 477 path = strchr(host, '/'); 478 479 if (path == NULL) { 480 pr_err(gettext( 481 "illegal nfs url syntax\n")); 482 last_error = RET_ERR; 483 goto out; 484 } 485 486 *path = '\0'; 487 if (*host == '[') { 488 cb = strchr(host, ']'); 489 if (cb == NULL) { 490 pr_err(gettext( 491 "illegal nfs url syntax\n")); 492 last_error = RET_ERR; 493 goto out; 494 } else { 495 *cb = '\0'; 496 host++; 497 cb++; 498 if (*cb == ':') 499 port = htons((ushort_t) 500 atoi(cb+1)); 501 } 502 } else { 503 sport = strchr(host, ':'); 504 505 if (sport != NULL && sport < path) { 506 *sport = '\0'; 507 port = htons((ushort_t)atoi(sport+1)); 508 } 509 } 510 511 path++; 512 if (*path == '\0') 513 path = "."; 514 515 } else { 516 host = list[i].host; 517 path = list[i].path; 518 } 519 520 if (r = set_args(&mntflags, argp, host, mntp)) { 521 last_error = r; 522 goto out; 523 } 524 525 if (public_opt == TRUE) 526 use_pubfh = TRUE; 527 528 if (port == 0) { 529 port = nfs_port; 530 } else if (nfs_port != 0 && nfs_port != port) { 531 pr_err(gettext( 532 "port (%u) in nfs URL not the same" 533 " as port (%u) in port option\n"), 534 (unsigned int)ntohs(port), 535 (unsigned int)ntohs(nfs_port)); 536 last_error = RET_ERR; 537 goto out; 538 } 539 540 541 if (replicated && !(mntflags & MS_RDONLY)) { 542 pr_err(gettext( 543 "replicated mounts must be read-only\n")); 544 last_error = RET_ERR; 545 goto out; 546 } 547 548 if (replicated && (argp->flags & NFSMNT_SOFT)) { 549 pr_err(gettext( 550 "replicated mounts must not be soft\n")); 551 last_error = RET_ERR; 552 goto out; 553 } 554 555 oldvers = vers; 556 nconf = NULL; 557 558 r = RET_ERR; 559 560 /* 561 * If -o public was specified, and/or a URL was specified, 562 * then try the public file handle method. 563 */ 564 if ((use_pubfh == TRUE) || (url == TRUE)) { 565 r = get_fh_via_pub(argp, host, path, url, use_pubfh, 566 &vers, &nconf, port); 567 568 if (r != RET_OK) { 569 /* 570 * If -o public was specified, then return the 571 * error now. 572 */ 573 if (use_pubfh == TRUE) { 574 last_error = r; 575 goto out; 576 } 577 } else 578 use_pubfh = TRUE; 579 argp->flags |= NFSMNT_PUBLIC; 580 } 581 582 if ((r != RET_OK) || (vers == NFS_V4)) { 583 bool_t loud_on_mnt_err; 584 585 /* 586 * This can happen if -o public is not specified, 587 * special is a URL, and server doesn't support 588 * public file handle. 589 */ 590 if (url) { 591 URLparse(path); 592 } 593 594 /* 595 * If the path portion of the URL didn't have 596 * a leading / then there is good possibility 597 * that a mount without a leading slash will 598 * fail. 599 */ 600 if (url == TRUE && *path != '/') 601 loud_on_mnt_err = FALSE; 602 else 603 loud_on_mnt_err = TRUE; 604 605 r = get_fh(argp, host, path, &vers, 606 loud_on_mnt_err, &nconf, port); 607 608 if (r != RET_OK) { 609 610 /* 611 * If there was no leading / and the path was 612 * derived from a URL, then try again 613 * with a leading /. 614 */ 615 if ((r == RET_MNTERR) && 616 (loud_on_mnt_err == FALSE)) { 617 618 newpath = malloc(strlen(path)+2); 619 620 if (newpath == NULL) { 621 pr_err(gettext("memory " 622 "allocation failure\n")); 623 last_error = RET_ERR; 624 goto out; 625 } 626 627 strcpy(newpath, "/"); 628 strcat(newpath, path); 629 630 r = get_fh(argp, host, newpath, &vers, 631 TRUE, &nconf, port); 632 633 if (r == RET_OK) 634 path = newpath; 635 } 636 637 /* 638 * map exit code back to RET_ERR. 639 */ 640 if (r == RET_MNTERR) 641 r = RET_ERR; 642 643 if (r != RET_OK) { 644 645 if (replicated) { 646 if (argp->fh) 647 free(argp->fh); 648 if (argp->pathconf) 649 free(argp->pathconf); 650 free(argp); 651 goto cont; 652 } 653 654 last_error = r; 655 goto out; 656 } 657 } 658 } 659 660 if (oldvers && vers != oldvers) { 661 pr_err( 662 gettext("replicas must have the same version\n")); 663 last_error = RET_ERR; 664 goto out; 665 } 666 667 /* 668 * decide whether to use remote host's 669 * lockd or do local locking 670 */ 671 if (!(argp->flags & NFSMNT_LLOCK) && vers == NFS_VERSION && 672 remote_lock(host, argp->fh)) { 673 (void) fprintf(stderr, gettext( 674 "WARNING: No network locking on %s:%s:"), 675 host, path); 676 (void) fprintf(stderr, gettext( 677 " contact admin to install server change\n")); 678 argp->flags |= NFSMNT_LLOCK; 679 } 680 681 if (self_check(host)) 682 argp->flags |= NFSMNT_LOOPBACK; 683 684 if (use_pubfh == FALSE) { 685 /* 686 * Call to get_fh() above may have obtained the 687 * netconfig info and NULL proc'd the server. 688 * This would be the case with v4 689 */ 690 if (!(argp->flags & NFSMNT_KNCONF)) { 691 nconf = NULL; 692 if (r = getaddr_nfs(argp, host, &nconf, 693 FALSE, path, port, retry_error, 694 TRUE)) { 695 last_error = r; 696 goto out; 697 } 698 } 699 } 700 701 if (make_secure(argp, host, nconf, use_pubfh, vers) < 0) { 702 last_error = RET_ERR; 703 goto out; 704 } 705 706 if ((url == TRUE) && (use_pubfh == FALSE)) { 707 /* 708 * Convert the special from 709 * nfs://host/path 710 * to 711 * host:path 712 */ 713 if (convert_special(&special, host, oldpath, path, 714 mntp->mnt_special) == -1) { 715 (void) fprintf(stderr, gettext( 716 "could not convert URL nfs:%s to %s:%s\n"), 717 oldpath, host, path); 718 last_error = RET_ERR; 719 goto out; 720 } else { 721 mntp->mnt_special = special; 722 } 723 } 724 725 if (prev_argp == NULL) 726 args = argp; 727 else 728 prev_argp->nfs_ext_u.nfs_extB.next = argp; 729 prev_argp = argp; 730 731 cont: 732 if (oldpath != NULL) { 733 free(oldpath); 734 oldpath = NULL; 735 } 736 737 if (newpath != NULL) { 738 free(newpath); 739 newpath = NULL; 740 } 741 } 742 743 argp = NULL; 744 745 if (args == NULL) { 746 last_error = RET_RETRY; 747 goto out; 748 } 749 750 /* Determine which services are appropriate for the NFS version */ 751 if (strcmp(fstype, MNTTYPE_NFS4) == 0) 752 sl = service_list_v4; 753 else 754 sl = service_list; 755 756 /* 757 * enable services as needed. 758 */ 759 _check_services(sl); 760 761 mntflags |= MS_DATA | MS_OPTIONSTR; 762 763 if (mflg) 764 mntflags |= MS_NOMNTTAB; 765 766 if (!qflg) 767 saveopts = strdup(mntp->mnt_mntopts); 768 769 /* 770 * And make sure that we have the ephemeral mount_to 771 * set for this zone. 772 */ 773 set_nfsv4_ephemeral_mount_to(); 774 775 if (mount(mntp->mnt_special, mntp->mnt_mountp, mntflags, fstype, args, 776 sizeof (*args), mntp->mnt_mntopts, MAX_MNTOPT_STR) < 0) { 777 if (errno != ENOENT) { 778 pr_err(gettext("mount: %s: %s\n"), 779 mntp->mnt_mountp, strerror(errno)); 780 } else { 781 struct stat sb; 782 if (stat(mntp->mnt_mountp, &sb) < 0 && errno == ENOENT) 783 pr_err(gettext("mount: %s: %s\n"), 784 mntp->mnt_mountp, strerror(ENOENT)); 785 else 786 pr_err("%s: %s\n", mntp->mnt_special, 787 strerror(ENOENT)); 788 } 789 790 last_error = RET_ERR; 791 goto out; 792 } 793 794 if (!qflg && saveopts != NULL) { 795 cmp_requested_to_actual_options(saveopts, mntp->mnt_mntopts, 796 mntp->mnt_special, mntp->mnt_mountp); 797 } 798 799 out: 800 if (saveopts != NULL) 801 free(saveopts); 802 if (special != NULL) 803 free(special); 804 if (oldpath != NULL) 805 free(oldpath); 806 if (newpath != NULL) 807 free(newpath); 808 809 free_replica(list, n); 810 811 if (argp != NULL) { 812 /* 813 * If we had a new entry which was not added to the 814 * list yet, then add it now that it can be freed. 815 */ 816 if (prev_argp == NULL) 817 args = argp; 818 else 819 prev_argp->nfs_ext_u.nfs_extB.next = argp; 820 } 821 argp = args; 822 while (argp != NULL) { 823 if (argp->fh) 824 free(argp->fh); 825 if (argp->pathconf) 826 free(argp->pathconf); 827 if (argp->knconf) 828 free(argp->knconf); 829 if (argp->addr) { 830 free(argp->addr->buf); 831 free(argp->addr); 832 } 833 nfs_free_secdata(argp->nfs_ext_u.nfs_extB.secdata); 834 if (argp->syncaddr) { 835 free(argp->syncaddr->buf); 836 free(argp->syncaddr); 837 } 838 if (argp->netname) 839 free(argp->netname); 840 prev_argp = argp; 841 argp = argp->nfs_ext_u.nfs_extB.next; 842 free(prev_argp); 843 } 844 845 return (last_error); 846 } 847 848 /* 849 * These options are duplicated in uts/common/fs/nfs/nfs_dlinet.c 850 * Changes must be made to both lists. 851 */ 852 static char *optlist[] = { 853 #define OPT_RO 0 854 MNTOPT_RO, 855 #define OPT_RW 1 856 MNTOPT_RW, 857 #define OPT_QUOTA 2 858 MNTOPT_QUOTA, 859 #define OPT_NOQUOTA 3 860 MNTOPT_NOQUOTA, 861 #define OPT_SOFT 4 862 MNTOPT_SOFT, 863 #define OPT_HARD 5 864 MNTOPT_HARD, 865 #define OPT_SUID 6 866 MNTOPT_SUID, 867 #define OPT_NOSUID 7 868 MNTOPT_NOSUID, 869 #define OPT_GRPID 8 870 MNTOPT_GRPID, 871 #define OPT_REMOUNT 9 872 MNTOPT_REMOUNT, 873 #define OPT_NOSUB 10 874 MNTOPT_NOSUB, 875 #define OPT_INTR 11 876 MNTOPT_INTR, 877 #define OPT_NOINTR 12 878 MNTOPT_NOINTR, 879 #define OPT_PORT 13 880 MNTOPT_PORT, 881 #define OPT_SECURE 14 882 MNTOPT_SECURE, 883 #define OPT_RSIZE 15 884 MNTOPT_RSIZE, 885 #define OPT_WSIZE 16 886 MNTOPT_WSIZE, 887 #define OPT_TIMEO 17 888 MNTOPT_TIMEO, 889 #define OPT_RETRANS 18 890 MNTOPT_RETRANS, 891 #define OPT_ACTIMEO 19 892 MNTOPT_ACTIMEO, 893 #define OPT_ACREGMIN 20 894 MNTOPT_ACREGMIN, 895 #define OPT_ACREGMAX 21 896 MNTOPT_ACREGMAX, 897 #define OPT_ACDIRMIN 22 898 MNTOPT_ACDIRMIN, 899 #define OPT_ACDIRMAX 23 900 MNTOPT_ACDIRMAX, 901 #define OPT_BG 24 902 MNTOPT_BG, 903 #define OPT_FG 25 904 MNTOPT_FG, 905 #define OPT_RETRY 26 906 MNTOPT_RETRY, 907 #define OPT_NOAC 27 908 MNTOPT_NOAC, 909 #define OPT_NOCTO 28 910 MNTOPT_NOCTO, 911 #define OPT_LLOCK 29 912 MNTOPT_LLOCK, 913 #define OPT_POSIX 30 914 MNTOPT_POSIX, 915 #define OPT_VERS 31 916 MNTOPT_VERS, 917 #define OPT_PROTO 32 918 MNTOPT_PROTO, 919 #define OPT_SEMISOFT 33 920 MNTOPT_SEMISOFT, 921 #define OPT_NOPRINT 34 922 MNTOPT_NOPRINT, 923 #define OPT_SEC 35 924 MNTOPT_SEC, 925 #define OPT_LARGEFILES 36 926 MNTOPT_LARGEFILES, 927 #define OPT_NOLARGEFILES 37 928 MNTOPT_NOLARGEFILES, 929 #define OPT_PUBLIC 38 930 MNTOPT_PUBLIC, 931 #define OPT_DIRECTIO 39 932 MNTOPT_FORCEDIRECTIO, 933 #define OPT_NODIRECTIO 40 934 MNTOPT_NOFORCEDIRECTIO, 935 #define OPT_XATTR 41 936 MNTOPT_XATTR, 937 #define OPT_NOXATTR 42 938 MNTOPT_NOXATTR, 939 #define OPT_DEVICES 43 940 MNTOPT_DEVICES, 941 #define OPT_NODEVICES 44 942 MNTOPT_NODEVICES, 943 #define OPT_SETUID 45 944 MNTOPT_SETUID, 945 #define OPT_NOSETUID 46 946 MNTOPT_NOSETUID, 947 #define OPT_EXEC 47 948 MNTOPT_EXEC, 949 #define OPT_NOEXEC 48 950 MNTOPT_NOEXEC, 951 NULL 952 }; 953 954 #define bad(val) (val == NULL || !isdigit(*val)) 955 956 static int 957 set_args(int *mntflags, struct nfs_args *args, char *fshost, struct mnttab *mnt) 958 { 959 char *saveopt, *optstr, *opts, *newopts, *val; 960 int largefiles = 0; 961 int invalid = 0; 962 int attrpref = 0; 963 int optlen; 964 965 args->flags = NFSMNT_INT; /* default is "intr" */ 966 args->flags |= NFSMNT_HOSTNAME; 967 args->flags |= NFSMNT_NEWARGS; /* using extented nfs_args structure */ 968 args->hostname = fshost; 969 970 optstr = opts = strdup(mnt->mnt_mntopts); 971 /* sizeof (MNTOPT_XXX) includes one extra byte we may need for "," */ 972 optlen = strlen(mnt->mnt_mntopts) + sizeof (MNTOPT_XATTR) + 1; 973 if (optlen > MAX_MNTOPT_STR) { 974 pr_err(gettext("option string too long")); 975 return (RET_ERR); 976 } 977 newopts = malloc(optlen); 978 if (opts == NULL || newopts == NULL) { 979 pr_err(gettext("no memory")); 980 if (opts) 981 free(opts); 982 if (newopts) 983 free(newopts); 984 return (RET_ERR); 985 } 986 newopts[0] = '\0'; 987 988 while (*opts) { 989 invalid = 0; 990 saveopt = opts; 991 switch (getsubopt(&opts, optlist, &val)) { 992 case OPT_RO: 993 *mntflags |= MS_RDONLY; 994 break; 995 case OPT_RW: 996 *mntflags &= ~(MS_RDONLY); 997 break; 998 case OPT_QUOTA: 999 case OPT_NOQUOTA: 1000 break; 1001 case OPT_SOFT: 1002 args->flags |= NFSMNT_SOFT; 1003 args->flags &= ~(NFSMNT_SEMISOFT); 1004 break; 1005 case OPT_SEMISOFT: 1006 args->flags |= NFSMNT_SOFT; 1007 args->flags |= NFSMNT_SEMISOFT; 1008 break; 1009 case OPT_HARD: 1010 args->flags &= ~(NFSMNT_SOFT); 1011 args->flags &= ~(NFSMNT_SEMISOFT); 1012 break; 1013 case OPT_SUID: 1014 *mntflags &= ~(MS_NOSUID); 1015 break; 1016 case OPT_NOSUID: 1017 *mntflags |= MS_NOSUID; 1018 break; 1019 case OPT_GRPID: 1020 args->flags |= NFSMNT_GRPID; 1021 break; 1022 case OPT_REMOUNT: 1023 *mntflags |= MS_REMOUNT; 1024 break; 1025 case OPT_INTR: 1026 args->flags |= NFSMNT_INT; 1027 break; 1028 case OPT_NOINTR: 1029 args->flags &= ~(NFSMNT_INT); 1030 break; 1031 case OPT_NOAC: 1032 args->flags |= NFSMNT_NOAC; 1033 break; 1034 case OPT_PORT: 1035 if (bad(val)) 1036 goto badopt; 1037 nfs_port = htons((ushort_t)atoi(val)); 1038 break; 1039 1040 case OPT_SECURE: 1041 if (nfs_getseconfig_byname("dh", &nfs_sec)) { 1042 pr_err(gettext("can not get \"dh\" from %s\n"), 1043 NFSSEC_CONF); 1044 goto badopt; 1045 } 1046 sec_opt++; 1047 break; 1048 1049 case OPT_NOCTO: 1050 args->flags |= NFSMNT_NOCTO; 1051 break; 1052 1053 case OPT_RSIZE: 1054 args->flags |= NFSMNT_RSIZE; 1055 if (bad(val)) 1056 goto badopt; 1057 args->rsize = atoi(val); 1058 break; 1059 case OPT_WSIZE: 1060 args->flags |= NFSMNT_WSIZE; 1061 if (bad(val)) 1062 goto badopt; 1063 args->wsize = atoi(val); 1064 break; 1065 case OPT_TIMEO: 1066 args->flags |= NFSMNT_TIMEO; 1067 if (bad(val)) 1068 goto badopt; 1069 args->timeo = atoi(val); 1070 break; 1071 case OPT_RETRANS: 1072 args->flags |= NFSMNT_RETRANS; 1073 if (bad(val)) 1074 goto badopt; 1075 args->retrans = atoi(val); 1076 break; 1077 case OPT_ACTIMEO: 1078 args->flags |= NFSMNT_ACDIRMAX; 1079 args->flags |= NFSMNT_ACREGMAX; 1080 args->flags |= NFSMNT_ACDIRMIN; 1081 args->flags |= NFSMNT_ACREGMIN; 1082 if (bad(val)) 1083 goto badopt; 1084 args->acdirmin = args->acregmin = args->acdirmax 1085 = args->acregmax = atoi(val); 1086 break; 1087 case OPT_ACREGMIN: 1088 args->flags |= NFSMNT_ACREGMIN; 1089 if (bad(val)) 1090 goto badopt; 1091 args->acregmin = atoi(val); 1092 break; 1093 case OPT_ACREGMAX: 1094 args->flags |= NFSMNT_ACREGMAX; 1095 if (bad(val)) 1096 goto badopt; 1097 args->acregmax = atoi(val); 1098 break; 1099 case OPT_ACDIRMIN: 1100 args->flags |= NFSMNT_ACDIRMIN; 1101 if (bad(val)) 1102 goto badopt; 1103 args->acdirmin = atoi(val); 1104 break; 1105 case OPT_ACDIRMAX: 1106 args->flags |= NFSMNT_ACDIRMAX; 1107 if (bad(val)) 1108 goto badopt; 1109 args->acdirmax = atoi(val); 1110 break; 1111 case OPT_BG: 1112 bg++; 1113 break; 1114 case OPT_FG: 1115 bg = 0; 1116 break; 1117 case OPT_RETRY: 1118 if (bad(val)) 1119 goto badopt; 1120 retries = atoi(val); 1121 break; 1122 case OPT_LLOCK: 1123 args->flags |= NFSMNT_LLOCK; 1124 break; 1125 case OPT_POSIX: 1126 posix = 1; 1127 break; 1128 case OPT_VERS: 1129 if (bad(val)) 1130 goto badopt; 1131 nfsvers = (rpcvers_t)atoi(val); 1132 break; 1133 case OPT_PROTO: 1134 if (val == NULL) 1135 goto badopt; 1136 1137 nfs_proto = (char *)malloc(strlen(val)+1); 1138 if (!nfs_proto) { 1139 pr_err(gettext("no memory")); 1140 return (RET_ERR); 1141 } 1142 1143 (void) strncpy(nfs_proto, val, strlen(val)+1); 1144 break; 1145 1146 case OPT_NOPRINT: 1147 args->flags |= NFSMNT_NOPRINT; 1148 break; 1149 1150 case OPT_LARGEFILES: 1151 largefiles = 1; 1152 break; 1153 1154 case OPT_NOLARGEFILES: 1155 pr_err(gettext("NFS can't support \"nolargefiles\"\n")); 1156 free(optstr); 1157 return (RET_ERR); 1158 1159 case OPT_SEC: 1160 if (nfs_getseconfig_byname(val, &nfs_sec)) { 1161 pr_err(gettext("can not get \"%s\" from %s\n"), 1162 val, NFSSEC_CONF); 1163 return (RET_ERR); 1164 } 1165 sec_opt++; 1166 break; 1167 1168 case OPT_PUBLIC: 1169 public_opt = TRUE; 1170 break; 1171 1172 case OPT_DIRECTIO: 1173 args->flags |= NFSMNT_DIRECTIO; 1174 break; 1175 1176 case OPT_NODIRECTIO: 1177 args->flags &= ~(NFSMNT_DIRECTIO); 1178 break; 1179 1180 case OPT_XATTR: 1181 case OPT_NOXATTR: 1182 /* 1183 * VFS options; just need to get them into the 1184 * new mount option string and note we've seen them 1185 */ 1186 attrpref = 1; 1187 break; 1188 default: 1189 /* 1190 * Note that this could be a valid OPT_* option so 1191 * we can't use "val" but need to use "saveopt". 1192 */ 1193 if (fsisstdopt(saveopt)) 1194 break; 1195 invalid = 1; 1196 if (!qflg) 1197 (void) fprintf(stderr, gettext( 1198 "mount: %s on %s - WARNING unknown option" 1199 " \"%s\"\n"), mnt->mnt_special, 1200 mnt->mnt_mountp, saveopt); 1201 break; 1202 } 1203 if (!invalid) { 1204 if (newopts[0]) 1205 strcat(newopts, ","); 1206 strcat(newopts, saveopt); 1207 } 1208 } 1209 /* Default is to turn extended attrs on */ 1210 if (!attrpref) { 1211 if (newopts[0]) 1212 strcat(newopts, ","); 1213 strcat(newopts, MNTOPT_XATTR); 1214 } 1215 strcpy(mnt->mnt_mntopts, newopts); 1216 free(newopts); 1217 free(optstr); 1218 1219 /* ensure that only one secure mode is requested */ 1220 if (sec_opt > 1) { 1221 pr_err(gettext("Security options conflict\n")); 1222 return (RET_ERR); 1223 } 1224 1225 /* ensure that the user isn't trying to get large files over V2 */ 1226 if (nfsvers == NFS_VERSION && largefiles) { 1227 pr_err(gettext("NFS V2 can't support \"largefiles\"\n")); 1228 return (RET_ERR); 1229 } 1230 1231 if (nfsvers == NFS_V4 && 1232 nfs_proto != NULL && 1233 strncasecmp(nfs_proto, NC_UDP, strlen(NC_UDP)) == 0) { 1234 pr_err(gettext("NFS V4 does not support %s\n"), nfs_proto); 1235 return (RET_ERR); 1236 } 1237 1238 return (RET_OK); 1239 1240 badopt: 1241 pr_err(gettext("invalid option: \"%s\"\n"), saveopt); 1242 free(optstr); 1243 return (RET_ERR); 1244 } 1245 1246 static int 1247 make_secure(struct nfs_args *args, char *hostname, struct netconfig *nconf, 1248 bool_t use_pubfh, rpcvers_t vers) 1249 { 1250 sec_data_t *secdata; 1251 int flags; 1252 struct netbuf *syncaddr = NULL; 1253 struct nd_addrlist *retaddrs = NULL; 1254 char netname[MAXNETNAMELEN+1]; 1255 1256 /* 1257 * check to see if any secure mode is requested. 1258 * if not, use default security mode. 1259 */ 1260 if (!snego_done && !sec_opt) { 1261 /* 1262 * Get default security mode. 1263 * AUTH_UNIX has been the default choice for a long time. 1264 * The better NFS security service becomes, the better chance 1265 * we will set stronger security service as the default NFS 1266 * security mode. 1267 */ 1268 if (nfs_getseconfig_default(&nfs_sec)) { 1269 pr_err(gettext("error getting default" 1270 " security entry\n")); 1271 return (-1); 1272 } 1273 args->flags |= NFSMNT_SECDEFAULT; 1274 } 1275 1276 /* 1277 * Get the network address for the time service on the server. 1278 * If an RPC based time service is not available then try the 1279 * IP time service. 1280 * 1281 * This is for AUTH_DH processing. We will also pass down syncaddr 1282 * and netname for NFS V4 even if AUTH_DH is not requested right now. 1283 * NFS V4 does security negotiation in the kernel via SECINFO. 1284 * These information might be needed later in the kernel. 1285 * 1286 * Eventurally, we want to move this code to nfs_clnt_secdata() 1287 * when autod_nfs.c and mount.c can share the same get_the_addr() 1288 * routine. 1289 */ 1290 flags = 0; 1291 syncaddr = NULL; 1292 1293 if (nfs_sec.sc_rpcnum == AUTH_DH || vers == NFS_V4) { 1294 /* 1295 * If using the public fh or nfsv4, we will not contact the 1296 * remote RPCBINDer, since it is possibly behind a firewall. 1297 */ 1298 if (use_pubfh == FALSE && vers != NFS_V4) 1299 syncaddr = get_the_addr(hostname, RPCBPROG, RPCBVERS, 1300 nconf, 0, NULL, NULL, FALSE, NULL, NULL); 1301 1302 if (syncaddr != NULL) { 1303 /* for flags in sec_data */ 1304 flags |= AUTH_F_RPCTIMESYNC; 1305 } else { 1306 struct nd_hostserv hs; 1307 int error; 1308 1309 hs.h_host = hostname; 1310 hs.h_serv = "timserver"; 1311 1312 error = netdir_getbyname(nconf, &hs, &retaddrs); 1313 1314 if (error != ND_OK && (nfs_sec.sc_rpcnum == AUTH_DH)) { 1315 pr_err(gettext("%s: secure: no time service\n"), 1316 hostname); 1317 return (-1); 1318 } 1319 1320 if (error == ND_OK) 1321 syncaddr = retaddrs->n_addrs; 1322 1323 /* 1324 * For NFS_V4 if AUTH_DH is negotiated later in the 1325 * kernel thru SECINFO, it will need syncaddr 1326 * and netname data. 1327 */ 1328 if (vers == NFS_V4 && syncaddr && 1329 host2netname(netname, hostname, NULL)) { 1330 args->syncaddr = malloc(sizeof (struct netbuf)); 1331 args->syncaddr->buf = malloc(syncaddr->len); 1332 (void) memcpy(args->syncaddr->buf, 1333 syncaddr->buf, syncaddr->len); 1334 args->syncaddr->len = syncaddr->len; 1335 args->syncaddr->maxlen = syncaddr->maxlen; 1336 args->netname = strdup(netname); 1337 args->flags |= NFSMNT_SECURE; 1338 } 1339 } 1340 } 1341 1342 /* 1343 * For the initial chosen flavor (any flavor defined in nfssec.conf), 1344 * the data will be stored in the sec_data structure via 1345 * nfs_clnt_secdata() and be passed to the kernel via nfs_args_* 1346 * extended data structure. 1347 */ 1348 if (!(secdata = nfs_clnt_secdata(&nfs_sec, hostname, args->knconf, 1349 syncaddr, flags))) { 1350 pr_err(gettext("errors constructing security related data\n")); 1351 if (flags & AUTH_F_RPCTIMESYNC) { 1352 free(syncaddr->buf); 1353 free(syncaddr); 1354 } else if (retaddrs) 1355 netdir_free((void *)retaddrs, ND_ADDRLIST); 1356 return (-1); 1357 } 1358 1359 NFS_ARGS_EXTB_secdata(args, secdata); 1360 if (flags & AUTH_F_RPCTIMESYNC) { 1361 free(syncaddr->buf); 1362 free(syncaddr); 1363 } else if (retaddrs) 1364 netdir_free((void *)retaddrs, ND_ADDRLIST); 1365 return (0); 1366 } 1367 1368 /* 1369 * Get the network address on "hostname" for program "prog" 1370 * with version "vers" by using the nconf configuration data 1371 * passed in. 1372 * 1373 * If the address of a netconfig pointer is null then 1374 * information is not sufficient and no netbuf will be returned. 1375 * 1376 * Finally, ping the null procedure of that service. 1377 * 1378 * A similar routine is also defined in ../../autofs/autod_nfs.c. 1379 * This is a potential routine to move to ../lib for common usage. 1380 */ 1381 static struct netbuf * 1382 get_the_addr(char *hostname, ulong_t prog, ulong_t vers, 1383 struct netconfig *nconf, ushort_t port, struct t_info *tinfo, 1384 caddr_t *fhp, bool_t get_pubfh, char *fspath, err_ret_t *error) 1385 { 1386 struct netbuf *nb = NULL; 1387 struct t_bind *tbind = NULL; 1388 CLIENT *cl = NULL; 1389 struct timeval tv; 1390 int fd = -1; 1391 AUTH *ah = NULL; 1392 AUTH *new_ah = NULL; 1393 struct snego_t snego; 1394 1395 if (nconf == NULL) 1396 return (NULL); 1397 1398 if ((fd = t_open(nconf->nc_device, O_RDWR, tinfo)) == -1) 1399 goto done; 1400 1401 /* LINTED pointer alignment */ 1402 if ((tbind = (struct t_bind *)t_alloc(fd, T_BIND, T_ADDR)) 1403 == NULL) 1404 goto done; 1405 1406 /* 1407 * In the case of public filehandle usage or NFSv4 we want to 1408 * avoid use of the rpcbind/portmap protocol 1409 */ 1410 if ((get_pubfh == TRUE) || (vers == NFS_V4)) { 1411 struct nd_hostserv hs; 1412 struct nd_addrlist *retaddrs; 1413 int retval; 1414 hs.h_host = hostname; 1415 1416 /* NFS where vers==4 does not support UDP */ 1417 if (vers == NFS_V4 && 1418 strncasecmp(nconf->nc_proto, NC_UDP, 1419 strlen(NC_UDP)) == 0) { 1420 SET_ERR_RET(error, ERR_PROTO_UNSUPP, 0); 1421 goto done; 1422 } 1423 1424 if (port == 0) 1425 hs.h_serv = "nfs"; 1426 else 1427 hs.h_serv = NULL; 1428 1429 if ((retval = netdir_getbyname(nconf, &hs, &retaddrs)) 1430 != ND_OK) { 1431 /* 1432 * Carefully set the error value here. Want to signify 1433 * that the error was an unknown host. 1434 */ 1435 if (retval == ND_NOHOST) { 1436 SET_ERR_RET(error, ERR_NOHOST, retval); 1437 } 1438 1439 goto done; 1440 } 1441 memcpy(tbind->addr.buf, retaddrs->n_addrs->buf, 1442 retaddrs->n_addrs->len); 1443 tbind->addr.len = retaddrs->n_addrs->len; 1444 netdir_free((void *)retaddrs, ND_ADDRLIST); 1445 (void) netdir_options(nconf, ND_SET_RESERVEDPORT, fd, NULL); 1446 1447 } else { 1448 if (rpcb_getaddr(prog, vers, nconf, &tbind->addr, 1449 hostname) == FALSE) { 1450 goto done; 1451 } 1452 } 1453 1454 if (port) { 1455 /* LINTED pointer alignment */ 1456 if (strcmp(nconf->nc_protofmly, NC_INET) == 0) 1457 ((struct sockaddr_in *)tbind->addr.buf)->sin_port 1458 = port; 1459 else if (strcmp(nconf->nc_protofmly, NC_INET6) == 0) 1460 ((struct sockaddr_in6 *)tbind->addr.buf)->sin6_port 1461 = port; 1462 1463 } 1464 1465 cl = clnt_tli_create(fd, nconf, &tbind->addr, prog, vers, 0, 0); 1466 if (cl == NULL) { 1467 /* 1468 * clnt_tli_create() returns either RPC_SYSTEMERROR, 1469 * RPC_UNKNOWNPROTO or RPC_TLIERROR. The RPC_TLIERROR translates 1470 * to "Misc. TLI error". This is not too helpful. Most likely 1471 * the connection to the remote server timed out, so this 1472 * error is at least less perplexing. 1473 * See: usr/src/cmd/rpcinfo/rpcinfo.c 1474 */ 1475 if (rpc_createerr.cf_stat == RPC_TLIERROR) { 1476 SET_ERR_RET(error, ERR_RPCERROR, RPC_PMAPFAILURE); 1477 } else { 1478 SET_ERR_RET(error, ERR_RPCERROR, rpc_createerr.cf_stat); 1479 } 1480 goto done; 1481 } 1482 1483 ah = authsys_create_default(); 1484 if (ah != NULL) 1485 cl->cl_auth = ah; 1486 1487 tv.tv_sec = 5; 1488 tv.tv_usec = 0; 1489 1490 (void) clnt_control(cl, CLSET_TIMEOUT, (char *)&tv); 1491 1492 if ((get_pubfh == TRUE) && (vers != NFS_V4)) { 1493 enum snego_stat sec; 1494 1495 if (!snego_done) { 1496 /* 1497 * negotiate sec flavor. 1498 */ 1499 snego.cnt = 0; 1500 if ((sec = nfs_sec_nego(vers, cl, fspath, &snego)) == 1501 SNEGO_SUCCESS) { 1502 int jj; 1503 1504 /* 1505 * check if server supports the one 1506 * specified in the sec= option. 1507 */ 1508 if (sec_opt) { 1509 for (jj = 0; jj < snego.cnt; jj++) { 1510 if (snego.array[jj] == 1511 nfs_sec.sc_nfsnum) { 1512 snego_done = TRUE; 1513 break; 1514 } 1515 } 1516 } 1517 1518 /* 1519 * find a common sec flavor 1520 */ 1521 if (!snego_done) { 1522 if (sec_opt) { 1523 pr_err(gettext( 1524 "Server does not support" 1525 " the security flavor" 1526 " specified.\n")); 1527 } 1528 1529 for (jj = 0; jj < snego.cnt; jj++) { 1530 if (!nfs_getseconfig_bynumber( 1531 snego.array[jj], 1532 &nfs_sec)) { 1533 snego_done = TRUE; 1534 #define EMSG80SUX "Security flavor %d was negotiated and will be used.\n" 1535 if (sec_opt) 1536 pr_err(gettext( 1537 EMSG80SUX), 1538 nfs_sec. 1539 sc_nfsnum); 1540 break; 1541 } 1542 } 1543 } 1544 1545 if (!snego_done) 1546 return (NULL); 1547 1548 /* 1549 * Now that the flavor has been 1550 * negotiated, get the fh. 1551 * 1552 * First, create an auth handle using the 1553 * negotiated sec flavor in the next lookup to 1554 * fetch the filehandle. 1555 */ 1556 new_ah = nfs_create_ah(cl, hostname, &nfs_sec); 1557 if (new_ah == NULL) 1558 goto done; 1559 cl->cl_auth = new_ah; 1560 } else if (sec == SNEGO_ARRAY_TOO_SMALL || sec == 1561 SNEGO_FAILURE) { 1562 goto done; 1563 } 1564 1565 /* 1566 * Note that if sec == SNEGO_DEF_VALID 1567 * default sec flavor is acceptable. 1568 * Use it to get the filehandle. 1569 */ 1570 } 1571 1572 if (vers == NFS_VERSION) { 1573 wnl_diropargs arg; 1574 wnl_diropres *res; 1575 1576 memset((char *)&arg.dir, 0, sizeof (wnl_fh)); 1577 arg.name = fspath; 1578 res = wnlproc_lookup_2(&arg, cl); 1579 1580 if (res == NULL || res->status != NFS_OK) 1581 goto done; 1582 *fhp = malloc(sizeof (wnl_fh)); 1583 1584 if (*fhp == NULL) { 1585 pr_err(gettext("no memory\n")); 1586 goto done; 1587 } 1588 1589 memcpy((char *)*fhp, 1590 (char *)&res->wnl_diropres_u.wnl_diropres.file, 1591 sizeof (wnl_fh)); 1592 } else { 1593 WNL_LOOKUP3args arg; 1594 WNL_LOOKUP3res *res; 1595 nfs_fh3 *fh3p; 1596 1597 memset((char *)&arg.what.dir, 0, sizeof (wnl_fh3)); 1598 arg.what.name = fspath; 1599 res = wnlproc3_lookup_3(&arg, cl); 1600 1601 if (res == NULL || res->status != NFS3_OK) 1602 goto done; 1603 1604 fh3p = (nfs_fh3 *)malloc(sizeof (*fh3p)); 1605 1606 if (fh3p == NULL) { 1607 pr_err(gettext("no memory\n")); 1608 CLNT_FREERES(cl, xdr_WNL_LOOKUP3res, 1609 (char *)res); 1610 goto done; 1611 } 1612 1613 fh3p->fh3_length = 1614 res->WNL_LOOKUP3res_u.res_ok.object.data.data_len; 1615 memcpy(fh3p->fh3_u.data, 1616 res->WNL_LOOKUP3res_u.res_ok.object.data.data_val, 1617 fh3p->fh3_length); 1618 1619 *fhp = (caddr_t)fh3p; 1620 CLNT_FREERES(cl, xdr_WNL_LOOKUP3res, (char *)res); 1621 } 1622 } else { 1623 void *res; 1624 struct rpc_err r_err; 1625 1626 if (vers == NFS_VERSION) 1627 res = wnlproc_null_2(NULL, cl); 1628 else if (vers == NFS_V3) 1629 res = wnlproc3_null_3(NULL, cl); 1630 else 1631 res = wnlproc4_null_4(NULL, cl); 1632 1633 if (res == NULL) { 1634 clnt_geterr(cl, &r_err); 1635 if (strcmp(nconf->nc_protofmly, NC_LOOPBACK) == 0) { 1636 switch (r_err.re_status) { 1637 case RPC_TLIERROR: 1638 case RPC_CANTRECV: 1639 case RPC_CANTSEND: 1640 r_err.re_status = RPC_PROGVERSMISMATCH; 1641 } 1642 } 1643 SET_ERR_RET(error, ERR_RPCERROR, r_err.re_status); 1644 goto done; 1645 } 1646 } 1647 1648 /* 1649 * Make a copy of the netbuf to return 1650 */ 1651 nb = (struct netbuf *)malloc(sizeof (*nb)); 1652 if (nb == NULL) { 1653 pr_err(gettext("no memory\n")); 1654 goto done; 1655 } 1656 *nb = tbind->addr; 1657 nb->buf = (char *)malloc(nb->maxlen); 1658 if (nb->buf == NULL) { 1659 pr_err(gettext("no memory\n")); 1660 free(nb); 1661 nb = NULL; 1662 goto done; 1663 } 1664 (void) memcpy(nb->buf, tbind->addr.buf, tbind->addr.len); 1665 1666 done: 1667 if (cl) { 1668 if (ah != NULL) { 1669 if (new_ah != NULL) 1670 AUTH_DESTROY(ah); 1671 AUTH_DESTROY(cl->cl_auth); 1672 cl->cl_auth = NULL; 1673 } 1674 clnt_destroy(cl); 1675 cl = NULL; 1676 } 1677 if (tbind) { 1678 t_free((char *)tbind, T_BIND); 1679 tbind = NULL; 1680 } 1681 if (fd >= 0) 1682 (void) t_close(fd); 1683 return (nb); 1684 } 1685 1686 static int 1687 check_nconf(struct netconfig *nconf, int nthtry, int *valid_proto) 1688 { 1689 int try_test = 0; 1690 int valid_family; 1691 char *proto = NULL; 1692 1693 1694 if (nthtry == FIRST_TRY) { 1695 try_test = ((nconf->nc_semantics == NC_TPI_COTS_ORD) || 1696 (nconf->nc_semantics == NC_TPI_COTS)); 1697 proto = NC_TCP; 1698 } else if (nthtry == SECOND_TRY) { 1699 try_test = (nconf->nc_semantics == NC_TPI_CLTS); 1700 proto = NC_UDP; 1701 } 1702 1703 if (proto && 1704 (strcmp(nconf->nc_protofmly, NC_INET) == 0 || 1705 strcmp(nconf->nc_protofmly, NC_INET6) == 0) && 1706 (strcmp(nconf->nc_proto, proto) == 0)) 1707 *valid_proto = TRUE; 1708 else 1709 *valid_proto = FALSE; 1710 1711 return (try_test); 1712 } 1713 1714 /* 1715 * Get a network address on "hostname" for program "prog" 1716 * with version "vers". If the port number is specified (non zero) 1717 * then try for a TCP/UDP transport and set the port number of the 1718 * resulting IP address. 1719 * 1720 * If the address of a netconfig pointer was passed and 1721 * if it's not null, use it as the netconfig otherwise 1722 * assign the address of the netconfig that was used to 1723 * establish contact with the service. 1724 * 1725 * A similar routine is also defined in ../../autofs/autod_nfs.c. 1726 * This is a potential routine to move to ../lib for common usage. 1727 * 1728 * "error" refers to a more descriptive term when get_addr fails 1729 * and returns NULL: ERR_PROTO_NONE if no error introduced by 1730 * -o proto option, ERR_NETPATH if error found in NETPATH 1731 * environment variable, ERR_PROTO_INVALID if an unrecognized 1732 * protocol is specified by user, and ERR_PROTO_UNSUPP for a 1733 * recognized but invalid protocol (eg. ticlts, ticots, etc.). 1734 * "error" is ignored if get_addr returns non-NULL result. 1735 * 1736 */ 1737 static struct netbuf * 1738 get_addr(char *hostname, ulong_t prog, ulong_t vers, struct netconfig **nconfp, 1739 char *proto, ushort_t port, struct t_info *tinfo, caddr_t *fhp, 1740 bool_t get_pubfh, char *fspath, err_ret_t *error) 1741 { 1742 struct netbuf *nb = NULL; 1743 struct netconfig *nconf = NULL; 1744 NCONF_HANDLE *nc = NULL; 1745 int nthtry = FIRST_TRY; 1746 err_ret_t errsave_nohost, errsave_rpcerr; 1747 1748 SET_ERR_RET(&errsave_nohost, ERR_PROTO_NONE, 0); 1749 SET_ERR_RET(&errsave_rpcerr, ERR_PROTO_NONE, 0); 1750 1751 SET_ERR_RET(error, ERR_PROTO_NONE, 0); 1752 1753 if (nconfp && *nconfp) 1754 return (get_the_addr(hostname, prog, vers, *nconfp, port, 1755 tinfo, fhp, get_pubfh, fspath, error)); 1756 /* 1757 * No nconf passed in. 1758 * 1759 * Try to get a nconf from /etc/netconfig filtered by 1760 * the NETPATH environment variable. 1761 * First search for COTS, second for CLTS unless proto 1762 * is specified. When we retry, we reset the 1763 * netconfig list so that we would search the whole list 1764 * all over again. 1765 */ 1766 1767 if ((nc = setnetpath()) == NULL) { 1768 /* should only return an error if problems with NETPATH */ 1769 /* In which case you are hosed */ 1770 SET_ERR_RET(error, ERR_NETPATH, 0); 1771 goto done; 1772 } 1773 1774 /* 1775 * If proto is specified, then only search for the match, 1776 * otherwise try COTS first, if failed, try CLTS. 1777 */ 1778 if (proto) { 1779 /* no matching proto name */ 1780 SET_ERR_RET(error, ERR_PROTO_INVALID, 0); 1781 1782 while (nconf = getnetpath(nc)) { 1783 if (strcmp(nconf->nc_netid, proto)) 1784 continue; 1785 1786 /* may be unsupported */ 1787 SET_ERR_RET(error, ERR_PROTO_UNSUPP, 0); 1788 1789 if ((port != 0) && 1790 ((strcmp(nconf->nc_protofmly, NC_INET) == 0 || 1791 strcmp(nconf->nc_protofmly, NC_INET6) == 0) && 1792 (strcmp(nconf->nc_proto, NC_TCP) != 0 && 1793 strcmp(nconf->nc_proto, NC_UDP) != 0))) { 1794 continue; 1795 } else { 1796 nb = get_the_addr(hostname, prog, 1797 vers, nconf, port, tinfo, 1798 fhp, get_pubfh, fspath, error); 1799 1800 if (nb != NULL) 1801 break; 1802 1803 /* nb is NULL - deal with errors */ 1804 if (error) { 1805 if (error->error_type == ERR_NOHOST) 1806 SET_ERR_RET(&errsave_nohost, 1807 error->error_type, 1808 error->error_value); 1809 if (error->error_type == ERR_RPCERROR) 1810 SET_ERR_RET(&errsave_rpcerr, 1811 error->error_type, 1812 error->error_value); 1813 } 1814 /* 1815 * continue with same protocol 1816 * selection 1817 */ 1818 continue; 1819 } 1820 } /* end of while */ 1821 1822 if (nconf == NULL) 1823 goto done; 1824 1825 if ((nb = get_the_addr(hostname, prog, vers, nconf, port, 1826 tinfo, fhp, get_pubfh, fspath, error)) == NULL) 1827 goto done; 1828 } else { 1829 retry: 1830 SET_ERR_RET(error, ERR_NETPATH, 0); 1831 while (nconf = getnetpath(nc)) { 1832 SET_ERR_RET(error, ERR_PROTO_NONE, 0); 1833 1834 if (nconf->nc_flag & NC_VISIBLE) { 1835 int valid_proto; 1836 1837 if (check_nconf(nconf, 1838 nthtry, &valid_proto)) { 1839 if (port == 0) 1840 break; 1841 1842 if (valid_proto == TRUE) 1843 break; 1844 } 1845 } 1846 } /* while */ 1847 if (nconf == NULL) { 1848 if (++nthtry <= MNT_PREF_LISTLEN) { 1849 endnetpath(nc); 1850 if ((nc = setnetpath()) == NULL) 1851 goto done; 1852 goto retry; 1853 } else 1854 goto done; 1855 } else { 1856 if ((nb = get_the_addr(hostname, prog, vers, nconf, 1857 port, tinfo, fhp, get_pubfh, fspath, error)) 1858 == NULL) { 1859 /* nb is NULL - deal with errors */ 1860 if (error) { 1861 if (error->error_type == ERR_NOHOST) 1862 SET_ERR_RET(&errsave_nohost, 1863 error->error_type, 1864 error->error_value); 1865 if (error->error_type == ERR_RPCERROR) 1866 SET_ERR_RET(&errsave_rpcerr, 1867 error->error_type, 1868 error->error_value); 1869 } 1870 /* 1871 * Continue the same search path in the 1872 * netconfig db until no more matched 1873 * nconf (nconf == NULL). 1874 */ 1875 goto retry; 1876 } 1877 } 1878 } 1879 SET_ERR_RET(error, ERR_PROTO_NONE, 0); 1880 1881 /* 1882 * Got nconf and nb. Now dup the netconfig structure (nconf) 1883 * and return it thru nconfp. 1884 */ 1885 *nconfp = getnetconfigent(nconf->nc_netid); 1886 if (*nconfp == NULL) { 1887 syslog(LOG_ERR, "no memory\n"); 1888 free(nb); 1889 nb = NULL; 1890 } 1891 done: 1892 if (nc) 1893 endnetpath(nc); 1894 1895 if (nb == NULL) { 1896 /* 1897 * Check the saved errors. The RPC error has * 1898 * precedence over the no host error. 1899 */ 1900 if (errsave_nohost.error_type != ERR_PROTO_NONE) 1901 SET_ERR_RET(error, errsave_nohost.error_type, 1902 errsave_nohost.error_value); 1903 1904 if (errsave_rpcerr.error_type != ERR_PROTO_NONE) 1905 SET_ERR_RET(error, errsave_rpcerr.error_type, 1906 errsave_rpcerr.error_value); 1907 } 1908 1909 return (nb); 1910 } 1911 1912 /* 1913 * Get a file handle usinging multi-component lookup with the public 1914 * file handle. 1915 */ 1916 static int 1917 get_fh_via_pub(struct nfs_args *args, char *fshost, char *fspath, bool_t url, 1918 bool_t loud, int *versp, struct netconfig **nconfp, ushort_t port) 1919 { 1920 uint_t vers_min; 1921 uint_t vers_max; 1922 int r; 1923 char *path; 1924 1925 if (nfsvers != 0) { 1926 vers_max = vers_min = nfsvers; 1927 } else { 1928 vers_max = vers_max_default; 1929 vers_min = vers_min_default; 1930 } 1931 1932 if (url == FALSE) { 1933 path = malloc(strlen(fspath) + 2); 1934 if (path == NULL) { 1935 if (loud == TRUE) 1936 pr_err(gettext("no memory\n")); 1937 return (RET_ERR); 1938 } 1939 1940 path[0] = (char)WNL_NATIVEPATH; 1941 (void) strcpy(&path[1], fspath); 1942 1943 } else { 1944 path = fspath; 1945 } 1946 1947 for (nfsvers_to_use = vers_max; nfsvers_to_use >= vers_min; 1948 nfsvers_to_use--) { 1949 /* 1950 * getaddr_nfs will also fill in the fh for us. 1951 */ 1952 r = getaddr_nfs(args, fshost, nconfp, 1953 TRUE, path, port, NULL, FALSE); 1954 1955 if (r == RET_OK) { 1956 /* 1957 * Since we are using the public fh, and NLM is 1958 * not firewall friendly, use local locking. 1959 * Not the case for v4. 1960 */ 1961 *versp = nfsvers_to_use; 1962 switch (nfsvers_to_use) { 1963 case NFS_V4: 1964 fstype = MNTTYPE_NFS4; 1965 break; 1966 case NFS_V3: 1967 fstype = MNTTYPE_NFS3; 1968 /* fall through to pick up llock option */ 1969 default: 1970 args->flags |= NFSMNT_LLOCK; 1971 break; 1972 } 1973 if (fspath != path) 1974 free(path); 1975 1976 return (r); 1977 } 1978 } 1979 1980 if (fspath != path) 1981 free(path); 1982 1983 if (loud == TRUE) { 1984 pr_err(gettext("Could not use public filehandle in request to" 1985 " server %s\n"), fshost); 1986 } 1987 1988 return (r); 1989 } 1990 1991 /* 1992 * get fhandle of remote path from server's mountd 1993 */ 1994 static int 1995 get_fh(struct nfs_args *args, char *fshost, char *fspath, int *versp, 1996 bool_t loud_on_mnt_err, struct netconfig **nconfp, ushort_t port) 1997 { 1998 static struct fhstatus fhs; 1999 static struct mountres3 mountres3; 2000 static struct pathcnf p; 2001 nfs_fh3 *fh3p; 2002 struct timeval timeout = { 25, 0}; 2003 CLIENT *cl; 2004 enum clnt_stat rpc_stat; 2005 rpcvers_t outvers = 0; 2006 rpcvers_t vers_to_try; 2007 rpcvers_t vers_min; 2008 static int printed = 0; 2009 int count, i, *auths; 2010 char *msg; 2011 2012 switch (nfsvers) { 2013 case 2: /* version 2 specified try that only */ 2014 vers_to_try = MOUNTVERS_POSIX; 2015 vers_min = MOUNTVERS; 2016 break; 2017 case 3: /* version 3 specified try that only */ 2018 vers_to_try = MOUNTVERS3; 2019 vers_min = MOUNTVERS3; 2020 break; 2021 case 4: /* version 4 specified try that only */ 2022 /* 2023 * This assignment is in the wrong version sequence. 2024 * The above are MOUNT program and this is NFS 2025 * program. However, it happens to work out since the 2026 * two don't collide for NFSv4. 2027 */ 2028 vers_to_try = NFS_V4; 2029 vers_min = NFS_V4; 2030 break; 2031 default: /* no version specified, start with default */ 2032 /* 2033 * If the retry version is set, use that. This will 2034 * be set if the last mount attempt returned any other 2035 * besides an RPC error. 2036 */ 2037 if (nfsretry_vers) 2038 vers_to_try = nfsretry_vers; 2039 else { 2040 vers_to_try = vers_max_default; 2041 vers_min = vers_min_default; 2042 } 2043 2044 break; 2045 } 2046 2047 /* 2048 * In the case of version 4, just NULL proc the server since 2049 * there is no MOUNT program. If this fails, then decrease 2050 * vers_to_try and continue on with regular MOUNT program 2051 * processing. 2052 */ 2053 if (vers_to_try == NFS_V4) { 2054 int savevers = nfsvers_to_use; 2055 err_ret_t error; 2056 int retval; 2057 SET_ERR_RET(&error, ERR_PROTO_NONE, 0); 2058 2059 /* Let's hope for the best */ 2060 nfsvers_to_use = NFS_V4; 2061 retval = getaddr_nfs(args, fshost, nconfp, FALSE, 2062 fspath, port, &error, vers_min == NFS_V4); 2063 2064 if (retval == RET_OK) { 2065 *versp = nfsvers_to_use = NFS_V4; 2066 fstype = MNTTYPE_NFS4; 2067 args->fh = strdup(fspath); 2068 if (args->fh == NULL) { 2069 pr_err(gettext("no memory\n")); 2070 *versp = nfsvers_to_use = savevers; 2071 return (RET_ERR); 2072 } 2073 return (RET_OK); 2074 } 2075 nfsvers_to_use = savevers; 2076 2077 vers_to_try--; 2078 /* If no more versions to try, let the user know. */ 2079 if (vers_to_try < vers_min) 2080 return (retval); 2081 2082 /* 2083 * If we are here, there are more versions to try but 2084 * there has been an error of some sort. If it is not 2085 * an RPC error (e.g. host unknown), we just stop and 2086 * return the error since the other versions would see 2087 * the same error as well. 2088 */ 2089 if (retval == RET_ERR && error.error_type != ERR_RPCERROR) 2090 return (retval); 2091 } 2092 2093 while ((cl = clnt_create_vers(fshost, MOUNTPROG, &outvers, 2094 vers_min, vers_to_try, "datagram_v")) == NULL) { 2095 if (rpc_createerr.cf_stat == RPC_UNKNOWNHOST) { 2096 pr_err(gettext("%s: %s\n"), fshost, 2097 clnt_spcreateerror("")); 2098 return (RET_ERR); 2099 } 2100 2101 /* 2102 * We don't want to downgrade version on lost packets 2103 */ 2104 if ((rpc_createerr.cf_stat == RPC_TIMEDOUT) || 2105 (rpc_createerr.cf_stat == RPC_PMAPFAILURE)) { 2106 pr_err(gettext("%s: %s\n"), fshost, 2107 clnt_spcreateerror("")); 2108 return (RET_RETRY); 2109 } 2110 2111 /* 2112 * back off and try the previous version - patch to the 2113 * problem of version numbers not being contigous and 2114 * clnt_create_vers failing (SunOS4.1 clients & SGI servers) 2115 * The problem happens with most non-Sun servers who 2116 * don't support mountd protocol #2. So, in case the 2117 * call fails, we re-try the call anyway. 2118 */ 2119 vers_to_try--; 2120 if (vers_to_try < vers_min) { 2121 if (rpc_createerr.cf_stat == RPC_PROGVERSMISMATCH) { 2122 if (nfsvers == 0) { 2123 pr_err(gettext( 2124 "%s:%s: no applicable versions of NFS supported\n"), 2125 fshost, fspath); 2126 } else { 2127 pr_err(gettext( 2128 "%s:%s: NFS Version %d not supported\n"), 2129 fshost, fspath, nfsvers); 2130 } 2131 return (RET_ERR); 2132 } 2133 if (!printed) { 2134 pr_err(gettext("%s: %s\n"), fshost, 2135 clnt_spcreateerror("")); 2136 printed = 1; 2137 } 2138 return (RET_RETRY); 2139 } 2140 } 2141 if (posix && outvers < MOUNTVERS_POSIX) { 2142 pr_err(gettext("%s: %s: no pathconf info\n"), 2143 fshost, clnt_sperror(cl, "")); 2144 clnt_destroy(cl); 2145 return (RET_ERR); 2146 } 2147 2148 if (__clnt_bindresvport(cl) < 0) { 2149 pr_err(gettext("Couldn't bind to reserved port\n")); 2150 clnt_destroy(cl); 2151 return (RET_RETRY); 2152 } 2153 2154 if ((cl->cl_auth = authsys_create_default()) == NULL) { 2155 pr_err( 2156 gettext("Couldn't create default authentication handle\n")); 2157 clnt_destroy(cl); 2158 return (RET_RETRY); 2159 } 2160 2161 switch (outvers) { 2162 case MOUNTVERS: 2163 case MOUNTVERS_POSIX: 2164 *versp = nfsvers_to_use = NFS_VERSION; 2165 rpc_stat = clnt_call(cl, MOUNTPROC_MNT, xdr_dirpath, 2166 (caddr_t)&fspath, xdr_fhstatus, (caddr_t)&fhs, timeout); 2167 if (rpc_stat != RPC_SUCCESS) { 2168 pr_err(gettext("%s:%s: server not responding %s\n"), 2169 fshost, fspath, clnt_sperror(cl, "")); 2170 clnt_destroy(cl); 2171 return (RET_RETRY); 2172 } 2173 2174 if ((errno = fhs.fhs_status) != MNT_OK) { 2175 if (loud_on_mnt_err) { 2176 if (errno == EACCES) { 2177 pr_err(gettext( 2178 "%s:%s: access denied\n"), 2179 fshost, fspath); 2180 } else { 2181 pr_err(gettext("%s:%s: %s\n"), fshost, 2182 fspath, strerror(errno)); 2183 } 2184 } 2185 clnt_destroy(cl); 2186 return (RET_MNTERR); 2187 } 2188 args->fh = malloc(sizeof (fhs.fhstatus_u.fhs_fhandle)); 2189 if (args->fh == NULL) { 2190 pr_err(gettext("no memory\n")); 2191 return (RET_ERR); 2192 } 2193 memcpy((caddr_t)args->fh, (caddr_t)&fhs.fhstatus_u.fhs_fhandle, 2194 sizeof (fhs.fhstatus_u.fhs_fhandle)); 2195 if (!errno && posix) { 2196 rpc_stat = clnt_call(cl, MOUNTPROC_PATHCONF, 2197 xdr_dirpath, (caddr_t)&fspath, xdr_ppathcnf, 2198 (caddr_t)&p, timeout); 2199 if (rpc_stat != RPC_SUCCESS) { 2200 pr_err(gettext( 2201 "%s:%s: server not responding %s\n"), 2202 fshost, fspath, clnt_sperror(cl, "")); 2203 free(args->fh); 2204 clnt_destroy(cl); 2205 return (RET_RETRY); 2206 } 2207 if (_PC_ISSET(_PC_ERROR, p.pc_mask)) { 2208 pr_err(gettext( 2209 "%s:%s: no pathconf info\n"), 2210 fshost, fspath); 2211 free(args->fh); 2212 clnt_destroy(cl); 2213 return (RET_ERR); 2214 } 2215 args->flags |= NFSMNT_POSIX; 2216 args->pathconf = malloc(sizeof (p)); 2217 if (args->pathconf == NULL) { 2218 pr_err(gettext("no memory\n")); 2219 free(args->fh); 2220 clnt_destroy(cl); 2221 return (RET_ERR); 2222 } 2223 memcpy((caddr_t)args->pathconf, (caddr_t)&p, 2224 sizeof (p)); 2225 } 2226 break; 2227 2228 case MOUNTVERS3: 2229 *versp = nfsvers_to_use = NFS_V3; 2230 rpc_stat = clnt_call(cl, MOUNTPROC_MNT, xdr_dirpath, 2231 (caddr_t)&fspath, xdr_mountres3, (caddr_t)&mountres3, 2232 timeout); 2233 if (rpc_stat != RPC_SUCCESS) { 2234 pr_err(gettext("%s:%s: server not responding %s\n"), 2235 fshost, fspath, clnt_sperror(cl, "")); 2236 clnt_destroy(cl); 2237 return (RET_RETRY); 2238 } 2239 2240 /* 2241 * Assume here that most of the MNT3ERR_* 2242 * codes map into E* errors. 2243 */ 2244 if ((errno = mountres3.fhs_status) != MNT_OK) { 2245 if (loud_on_mnt_err) { 2246 switch (errno) { 2247 case MNT3ERR_NAMETOOLONG: 2248 msg = "path name is too long"; 2249 break; 2250 case MNT3ERR_NOTSUPP: 2251 msg = "operation not supported"; 2252 break; 2253 case MNT3ERR_SERVERFAULT: 2254 msg = "server fault"; 2255 break; 2256 default: 2257 msg = strerror(errno); 2258 break; 2259 } 2260 pr_err(gettext("%s:%s: %s\n"), fshost, 2261 fspath, msg); 2262 } 2263 clnt_destroy(cl); 2264 return (RET_MNTERR); 2265 } 2266 2267 fh3p = (nfs_fh3 *)malloc(sizeof (*fh3p)); 2268 if (fh3p == NULL) { 2269 pr_err(gettext("no memory\n")); 2270 return (RET_ERR); 2271 } 2272 fh3p->fh3_length = 2273 mountres3.mountres3_u.mountinfo.fhandle.fhandle3_len; 2274 (void) memcpy(fh3p->fh3_u.data, 2275 mountres3.mountres3_u.mountinfo.fhandle.fhandle3_val, 2276 fh3p->fh3_length); 2277 args->fh = (caddr_t)fh3p; 2278 fstype = MNTTYPE_NFS3; 2279 2280 /* 2281 * Check the security flavor to be used. 2282 * 2283 * If "secure" or "sec=flavor" is a mount 2284 * option, check if the server supports the "flavor". 2285 * If the server does not support the flavor, return 2286 * error. 2287 * 2288 * If no mount option is given then use the first supported 2289 * security flavor (by the client) in the auth list returned 2290 * from the server. 2291 * 2292 */ 2293 auths = 2294 mountres3.mountres3_u.mountinfo.auth_flavors 2295 .auth_flavors_val; 2296 count = 2297 mountres3.mountres3_u.mountinfo.auth_flavors 2298 .auth_flavors_len; 2299 2300 if (sec_opt) { 2301 for (i = 0; i < count; i++) { 2302 if (auths[i] == nfs_sec.sc_nfsnum) 2303 break; 2304 } 2305 if (i >= count) 2306 goto autherr; 2307 } else { 2308 if (count < 0) 2309 break; 2310 2311 for (i = 0; i < count; i++) { 2312 if (!nfs_getseconfig_bynumber(auths[i], 2313 &nfs_sec)) { 2314 sec_opt++; 2315 break; 2316 } 2317 } 2318 2319 if (i >= count) 2320 goto autherr; 2321 } 2322 break; 2323 default: 2324 pr_err(gettext("%s:%s: Unknown MOUNT version %d\n"), 2325 fshost, fspath, outvers); 2326 clnt_destroy(cl); 2327 return (RET_ERR); 2328 } 2329 2330 clnt_destroy(cl); 2331 return (RET_OK); 2332 2333 autherr: 2334 pr_err(gettext( 2335 "security mode does not match the server exporting %s:%s\n"), 2336 fshost, fspath); 2337 clnt_destroy(cl); 2338 return (RET_ERR); 2339 } 2340 2341 /* 2342 * Fill in the address for the server's NFS service and 2343 * fill in a knetconfig structure for the transport that 2344 * the service is available on. 2345 */ 2346 static int 2347 getaddr_nfs(struct nfs_args *args, char *fshost, struct netconfig **nconfp, 2348 bool_t get_pubfh, char *fspath, ushort_t port, err_ret_t *error, 2349 bool_t print_rpcerror) 2350 { 2351 struct stat sb; 2352 struct netconfig *nconf; 2353 struct knetconfig *knconfp; 2354 static int printed = 0; 2355 struct t_info tinfo; 2356 err_ret_t addr_error; 2357 2358 SET_ERR_RET(error, ERR_PROTO_NONE, 0); 2359 SET_ERR_RET(&addr_error, ERR_PROTO_NONE, 0); 2360 2361 if (nfs_proto) { 2362 /* 2363 * If a proto is specified and its rdma try this. The kernel 2364 * will later do the reachablity test and fail form there 2365 * if rdma transport is not available to kernel rpc 2366 */ 2367 if (strcmp(nfs_proto, "rdma") == 0) { 2368 args->addr = get_addr(fshost, NFS_PROGRAM, 2369 nfsvers_to_use, nconfp, NULL, port, &tinfo, 2370 &args->fh, get_pubfh, fspath, &addr_error); 2371 2372 args->flags |= NFSMNT_DORDMA; 2373 } else { 2374 args->addr = get_addr(fshost, NFS_PROGRAM, 2375 nfsvers_to_use, nconfp, nfs_proto, port, &tinfo, 2376 &args->fh, get_pubfh, fspath, &addr_error); 2377 } 2378 } else { 2379 args->addr = get_addr(fshost, NFS_PROGRAM, nfsvers_to_use, 2380 nconfp, nfs_proto, port, &tinfo, &args->fh, get_pubfh, 2381 fspath, &addr_error); 2382 /* 2383 * If no proto is specified set this flag. 2384 * Kernel mount code will try to use RDMA if its on the 2385 * system, otherwise it will keep on using the protocol 2386 * selected here, through the above get_addr call. 2387 */ 2388 if (nfs_proto == NULL) 2389 args->flags |= NFSMNT_TRYRDMA; 2390 } 2391 2392 if (args->addr == NULL) { 2393 /* 2394 * We could have failed because the server had no public 2395 * file handle support. So don't print a message and don't 2396 * retry. 2397 */ 2398 if (get_pubfh == TRUE) 2399 return (RET_ERR); 2400 2401 if (!printed) { 2402 switch (addr_error.error_type) { 2403 case 0: 2404 printed = 1; 2405 break; 2406 case ERR_RPCERROR: 2407 if (!print_rpcerror) 2408 /* no error print at this time */ 2409 break; 2410 pr_err(gettext("%s NFS service not" 2411 " available %s\n"), fshost, 2412 clnt_sperrno(addr_error.error_value)); 2413 printed = 1; 2414 break; 2415 case ERR_NETPATH: 2416 pr_err(gettext("%s: Error in NETPATH.\n"), 2417 fshost); 2418 printed = 1; 2419 break; 2420 case ERR_PROTO_INVALID: 2421 pr_err(gettext("%s: NFS service does not" 2422 " recognize protocol: %s.\n"), fshost, 2423 nfs_proto); 2424 printed = 1; 2425 break; 2426 case ERR_PROTO_UNSUPP: 2427 if (nfsvers || nfsvers_to_use == NFS_VERSMIN) { 2428 /* 2429 * Don't set "printed" here. Since we 2430 * have to keep checking here till we 2431 * exhaust transport errors on all vers. 2432 * 2433 * Print this message if: 2434 * 1. After we have tried all versions 2435 * of NFS and none support the asked 2436 * transport. 2437 * 2438 * 2. If a version is specified and it 2439 * does'nt support the asked 2440 * transport. 2441 * 2442 * Otherwise we decrement the version 2443 * and retry below. 2444 */ 2445 pr_err(gettext("%s: NFS service does" 2446 " not support protocol: %s.\n"), 2447 fshost, nfs_proto); 2448 } 2449 break; 2450 case ERR_NOHOST: 2451 pr_err("%s: %s\n", fshost, "Unknown host"); 2452 printed = 1; 2453 break; 2454 default: 2455 /* case ERR_PROTO_NONE falls through */ 2456 pr_err(gettext("%s: NFS service not responding" 2457 "\n"), fshost); 2458 printed = 1; 2459 break; 2460 } 2461 } 2462 SET_ERR_RET(error, 2463 addr_error.error_type, addr_error.error_value); 2464 if (addr_error.error_type == ERR_PROTO_NONE) 2465 return (RET_RETRY); 2466 else if (addr_error.error_type == ERR_RPCERROR && 2467 !IS_UNRECOVERABLE_RPC(addr_error.error_value)) { 2468 return (RET_RETRY); 2469 } else if (nfsvers == 0 && addr_error.error_type == 2470 ERR_PROTO_UNSUPP && nfsvers_to_use != NFS_VERSMIN) { 2471 /* 2472 * If no version is specified, and the error is due 2473 * to an unsupported transport, then decrement the 2474 * version and retry. 2475 */ 2476 return (RET_RETRY); 2477 } else 2478 return (RET_ERR); 2479 } 2480 nconf = *nconfp; 2481 2482 if (stat(nconf->nc_device, &sb) < 0) { 2483 pr_err(gettext("getaddr_nfs: couldn't stat: %s: %s\n"), 2484 nconf->nc_device, strerror(errno)); 2485 return (RET_ERR); 2486 } 2487 2488 knconfp = (struct knetconfig *)malloc(sizeof (*knconfp)); 2489 if (!knconfp) { 2490 pr_err(gettext("no memory\n")); 2491 return (RET_ERR); 2492 } 2493 knconfp->knc_semantics = nconf->nc_semantics; 2494 knconfp->knc_protofmly = nconf->nc_protofmly; 2495 knconfp->knc_proto = nconf->nc_proto; 2496 knconfp->knc_rdev = sb.st_rdev; 2497 2498 /* make sure we don't overload the transport */ 2499 if (tinfo.tsdu > 0 && tinfo.tsdu < NFS_MAXDATA + NFS_RPC_HDR) { 2500 args->flags |= (NFSMNT_RSIZE | NFSMNT_WSIZE); 2501 if (args->rsize == 0 || args->rsize > tinfo.tsdu - NFS_RPC_HDR) 2502 args->rsize = tinfo.tsdu - NFS_RPC_HDR; 2503 if (args->wsize == 0 || args->wsize > tinfo.tsdu - NFS_RPC_HDR) 2504 args->wsize = tinfo.tsdu - NFS_RPC_HDR; 2505 } 2506 2507 args->flags |= NFSMNT_KNCONF; 2508 args->knconf = knconfp; 2509 return (RET_OK); 2510 } 2511 2512 static int 2513 retry(struct mnttab *mntp, int ro) 2514 { 2515 int delay = 5; 2516 int count = retries; 2517 int r; 2518 2519 /* 2520 * Please see comments on nfsretry_vers in the beginning of this file 2521 * and in main() routine. 2522 */ 2523 2524 if (bg) { 2525 if (fork() > 0) 2526 return (RET_OK); 2527 pr_err(gettext("backgrounding: %s\n"), mntp->mnt_mountp); 2528 backgrounded = 1; 2529 } else { 2530 if (!nfsretry_vers) 2531 pr_err(gettext("retrying: %s\n"), mntp->mnt_mountp); 2532 } 2533 2534 while (count--) { 2535 if ((r = mount_nfs(mntp, ro, NULL)) == RET_OK) { 2536 pr_err(gettext("%s: mounted OK\n"), mntp->mnt_mountp); 2537 return (RET_OK); 2538 } 2539 if (r != RET_RETRY) 2540 break; 2541 2542 if (count > 0) { 2543 (void) sleep(delay); 2544 delay *= 2; 2545 if (delay > 120) 2546 delay = 120; 2547 } 2548 } 2549 2550 if (!nfsretry_vers) 2551 pr_err(gettext("giving up on: %s\n"), mntp->mnt_mountp); 2552 2553 return (RET_ERR); 2554 } 2555 2556 /* 2557 * Read the /etc/default/nfs configuration file to determine if the 2558 * client has been configured for a new min/max for the NFS version to 2559 * use. 2560 */ 2561 static void 2562 read_default(void) 2563 { 2564 char *defval; 2565 int errno; 2566 int tmp; 2567 2568 /* Fail silently if error in opening the default nfs config file */ 2569 if ((defopen(NFSADMIN)) == 0) { 2570 if ((defval = defread("NFS_CLIENT_VERSMIN=")) != NULL) { 2571 errno = 0; 2572 tmp = strtol(defval, (char **)NULL, 10); 2573 if (errno == 0) { 2574 vers_min_default = tmp; 2575 } 2576 } 2577 if ((defval = defread("NFS_CLIENT_VERSMAX=")) != NULL) { 2578 errno = 0; 2579 tmp = strtol(defval, (char **)NULL, 10); 2580 if (errno == 0) { 2581 vers_max_default = tmp; 2582 } 2583 } 2584 /* close defaults file */ 2585 defopen(NULL); 2586 } 2587 } 2588 2589 static void 2590 sigusr1(int s) 2591 { 2592 } 2593