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 2008 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 /* 41 * nfs mount 42 */ 43 44 #define NFSCLIENT 45 #include <locale.h> 46 #include <stdio.h> 47 #include <string.h> 48 #include <memory.h> 49 #include <stdarg.h> 50 #include <unistd.h> 51 #include <ctype.h> 52 #include <stdlib.h> 53 #include <signal.h> 54 #include <sys/param.h> 55 #include <rpc/rpc.h> 56 #include <errno.h> 57 #include <sys/stat.h> 58 #include <netdb.h> 59 #include <sys/mount.h> 60 #include <sys/mntent.h> 61 #include <sys/mnttab.h> 62 #include <nfs/nfs.h> 63 #include <nfs/mount.h> 64 #include <rpcsvc/mount.h> 65 #include <sys/pathconf.h> 66 #include <netdir.h> 67 #include <netconfig.h> 68 #include <sys/sockio.h> 69 #include <net/if.h> 70 #include <syslog.h> 71 #include <fslib.h> 72 #include <deflt.h> 73 #include <sys/wait.h> 74 #include "replica.h" 75 #include <netinet/in.h> 76 #include <nfs/nfs_sec.h> 77 #include <rpcsvc/daemon_utils.h> 78 #include <priv.h> 79 #include <tsol/label.h> 80 #include "nfs_subr.h" 81 #include "webnfs.h" 82 #include <rpcsvc/nfs4_prot.h> 83 84 #include <nfs/nfssys.h> 85 extern int _nfssys(enum nfssys_op, void *); 86 87 #ifndef NFS_VERSMAX 88 #define NFS_VERSMAX 4 89 #endif 90 #ifndef NFS_VERSMIN 91 #define NFS_VERSMIN 2 92 #endif 93 94 #define RET_OK 0 95 #define RET_RETRY 32 96 #define RET_ERR 33 97 #define RET_MNTERR 1000 98 #define ERR_PROTO_NONE 0 99 #define ERR_PROTO_INVALID 901 100 #define ERR_PROTO_UNSUPP 902 101 #define ERR_NETPATH 903 102 #define ERR_NOHOST 904 103 #define ERR_RPCERROR 905 104 105 typedef struct err_ret { 106 int error_type; 107 int error_value; 108 } err_ret_t; 109 110 #define SET_ERR_RET(errst, etype, eval) \ 111 if (errst) { \ 112 (errst)->error_type = etype; \ 113 (errst)->error_value = eval; \ 114 } 115 116 /* number of transports to try */ 117 #define MNT_PREF_LISTLEN 2 118 #define FIRST_TRY 1 119 #define SECOND_TRY 2 120 121 #define BIGRETRY 10000 122 123 /* maximum length of RPC header for NFS messages */ 124 #define NFS_RPC_HDR 432 125 126 #define NFS_ARGS_EXTB_secdata(args, secdata) \ 127 { (args)->nfs_args_ext = NFS_ARGS_EXTB, \ 128 (args)->nfs_ext_u.nfs_extB.secdata = secdata; } 129 130 extern int __clnt_bindresvport(CLIENT *); 131 extern char *nfs_get_qop_name(); 132 extern AUTH * nfs_create_ah(); 133 extern enum snego_stat nfs_sec_nego(); 134 135 static void usage(void); 136 static int retry(struct mnttab *, int); 137 static int set_args(int *, struct nfs_args *, char *, struct mnttab *); 138 static int get_fh_via_pub(struct nfs_args *, char *, char *, bool_t, bool_t, 139 int *, struct netconfig **, ushort_t); 140 static int get_fh(struct nfs_args *, char *, char *, int *, bool_t, 141 struct netconfig **, ushort_t); 142 static int make_secure(struct nfs_args *, char *, struct netconfig *, 143 bool_t, rpcvers_t); 144 static int mount_nfs(struct mnttab *, int, err_ret_t *); 145 static int getaddr_nfs(struct nfs_args *, char *, struct netconfig **, 146 bool_t, char *, ushort_t, err_ret_t *, bool_t); 147 static void pr_err(const char *fmt, ...); 148 static void usage(void); 149 static struct netbuf *get_addr(char *, rpcprog_t, rpcvers_t, 150 struct netconfig **, char *, ushort_t, struct t_info *, 151 caddr_t *, bool_t, char *, err_ret_t *); 152 153 static struct netbuf *get_the_addr(char *, rpcprog_t, rpcvers_t, 154 struct netconfig *, ushort_t, struct t_info *, caddr_t *, 155 bool_t, char *, err_ret_t *); 156 157 extern int self_check(char *); 158 159 static void read_default(void); 160 161 static char typename[64]; 162 163 static int bg = 0; 164 static int backgrounded = 0; 165 static int posix = 0; 166 static int retries = BIGRETRY; 167 static ushort_t nfs_port = 0; 168 static char *nfs_proto = NULL; 169 170 static int mflg = 0; 171 static int Oflg = 0; /* Overlay mounts */ 172 static int qflg = 0; /* quiet - don't print warnings on bad options */ 173 174 static char *fstype = MNTTYPE_NFS; 175 176 static seconfig_t nfs_sec; 177 static int sec_opt = 0; /* any security option ? */ 178 static bool_t snego_done; 179 static void sigusr1(int); 180 181 extern void set_nfsv4_ephemeral_mount_to(void); 182 183 /* 184 * list of support services needed 185 */ 186 static char *service_list[] = { STATD, LOCKD, NULL }; 187 static char *service_list_v4[] = { STATD, LOCKD, NFS4CBD, NFSMAPID, NULL }; 188 189 /* 190 * These two variables control the NFS version number to be used. 191 * 192 * nfsvers defaults to 0 which means to use the highest number that 193 * both the client and the server support. It can also be set to 194 * a particular value, either 2, 3, or 4 to indicate the version 195 * number of choice. If the server (or the client) do not support 196 * the version indicated, then the mount attempt will be failed. 197 * 198 * nfsvers_to_use is the actual version number found to use. It 199 * is determined in get_fh by pinging the various versions of the 200 * NFS service on the server to see which responds positively. 201 * 202 * nfsretry_vers is the version number set when we retry the mount 203 * command with the version decremented from nfsvers_to_use. 204 * nfsretry_vers is set from nfsvers_to_use when we retry the mount 205 * for errors other than RPC errors; it helps un know why we are 206 * retrying. It is an indication that the retry is due to 207 * non-RPC errors. 208 */ 209 static rpcvers_t nfsvers = 0; 210 static rpcvers_t nfsvers_to_use = 0; 211 static rpcvers_t nfsretry_vers = 0; 212 213 /* 214 * There are the defaults (range) for the client when determining 215 * which NFS version to use when probing the server (see above). 216 * These will only be used when the vers mount option is not used and 217 * these may be reset if /etc/default/nfs is configured to do so. 218 */ 219 static rpcvers_t vers_max_default = NFS_VERSMAX_DEFAULT; 220 static rpcvers_t vers_min_default = NFS_VERSMIN_DEFAULT; 221 222 /* 223 * This variable controls whether to try the public file handle. 224 */ 225 static bool_t public_opt; 226 227 int 228 main(int argc, char *argv[]) 229 { 230 struct mnttab mnt; 231 extern char *optarg; 232 extern int optind; 233 char optbuf[MAX_MNTOPT_STR]; 234 int ro = 0; 235 int r; 236 int c; 237 char *myname; 238 err_ret_t retry_error; 239 240 (void) setlocale(LC_ALL, ""); 241 #if !defined(TEXT_DOMAIN) 242 #define TEXT_DOMAIN "SYS_TEST" 243 #endif 244 (void) textdomain(TEXT_DOMAIN); 245 246 myname = strrchr(argv[0], '/'); 247 myname = myname ? myname + 1 : argv[0]; 248 (void) snprintf(typename, sizeof (typename), "%s %s", 249 MNTTYPE_NFS, myname); 250 argv[0] = typename; 251 252 mnt.mnt_mntopts = optbuf; 253 (void) strcpy(optbuf, "rw"); 254 255 /* 256 * Set options 257 */ 258 while ((c = getopt(argc, argv, "ro:mOq")) != EOF) { 259 switch (c) { 260 case 'r': 261 ro++; 262 break; 263 case 'o': 264 if (strlen(optarg) >= MAX_MNTOPT_STR) { 265 pr_err(gettext("option string too long")); 266 return (RET_ERR); 267 } 268 (void) strcpy(mnt.mnt_mntopts, optarg); 269 #ifdef LATER /* XXX */ 270 if (strstr(optarg, MNTOPT_REMOUNT)) { 271 /* 272 * If remount is specified, only rw is allowed. 273 */ 274 if ((strcmp(optarg, MNTOPT_REMOUNT) != 0) && 275 (strcmp(optarg, "remount,rw") != 0) && 276 (strcmp(optarg, "rw,remount") != 0)) { 277 pr_err(gettext("Invalid options\n")); 278 exit(RET_ERR); 279 } 280 } 281 #endif /* LATER */ /* XXX */ 282 break; 283 case 'm': 284 mflg++; 285 break; 286 case 'O': 287 Oflg++; 288 break; 289 case 'q': 290 qflg++; 291 break; 292 default: 293 usage(); 294 exit(RET_ERR); 295 } 296 } 297 if (argc - optind != 2) { 298 usage(); 299 exit(RET_ERR); 300 } 301 302 mnt.mnt_special = argv[optind]; 303 mnt.mnt_mountp = argv[optind+1]; 304 305 if (!priv_ineffect(PRIV_SYS_MOUNT) || 306 !priv_ineffect(PRIV_NET_PRIVADDR)) { 307 pr_err(gettext("insufficient privileges\n")); 308 exit(RET_ERR); 309 } 310 311 /* 312 * On a labeled system, allow read-down nfs mounts if privileged 313 * (PRIV_NET_MAC_AWARE) to do so. Otherwise, ignore the error 314 * and "mount equal label only" behavior will result. 315 */ 316 if (is_system_labeled()) 317 (void) setpflags(NET_MAC_AWARE, 1); 318 319 /* 320 * Read the defaults file to see if the min/max versions have 321 * been set and therefore would override the encoded defaults. 322 * Then check to make sure that if they were set that the 323 * values are reasonable. 324 */ 325 read_default(); 326 if (vers_min_default > vers_max_default || 327 vers_min_default < NFS_VERSMIN || 328 vers_max_default > NFS_VERSMAX) { 329 pr_err("%s %s\n%s %s\n", 330 gettext("Incorrect configuration of client\'s"), 331 NFSADMIN, 332 gettext("NFS_CLIENT_VERSMIN or NFS_CLIENT_VERSMAX"), 333 gettext("is either out of range or overlaps.")); 334 } 335 336 SET_ERR_RET(&retry_error, ERR_PROTO_NONE, 0); 337 r = mount_nfs(&mnt, ro, &retry_error); 338 if (r == RET_RETRY && retries) { 339 /* 340 * Check the error code from the last mount attempt if it was 341 * an RPC error, then retry as is. Otherwise we retry with the 342 * nfsretry_vers set. It is set by decrementing nfsvers_to_use. 343 * If we are retrying with nfsretry_vers then we don't print any 344 * retry messages, since we are not retrying due to an RPC 345 * error. 346 */ 347 if (retry_error.error_type) { 348 if (retry_error.error_type != ERR_RPCERROR) { 349 nfsretry_vers = nfsvers_to_use = 350 nfsvers_to_use - 1; 351 if (nfsretry_vers < NFS_VERSMIN) 352 return (r); 353 } 354 } 355 356 r = retry(&mnt, ro); 357 } 358 /* 359 * exit(r); 360 */ 361 return (r); 362 } 363 364 static void 365 pr_err(const char *fmt, ...) 366 { 367 va_list ap; 368 369 va_start(ap, fmt); 370 if (backgrounded != 0) { 371 (void) vsyslog(LOG_ERR, fmt, ap); 372 } else { 373 (void) fprintf(stderr, "%s: ", typename); 374 (void) vfprintf(stderr, fmt, ap); 375 (void) fflush(stderr); 376 } 377 va_end(ap); 378 } 379 380 static void 381 usage() 382 { 383 (void) fprintf(stderr, 384 gettext("Usage: nfs mount [-r] [-o opts] [server:]path dir\n")); 385 exit(RET_ERR); 386 } 387 388 static int 389 mount_nfs(struct mnttab *mntp, int ro, err_ret_t *retry_error) 390 { 391 struct nfs_args *args = NULL, *argp = NULL, *prev_argp = NULL; 392 struct netconfig *nconf = NULL; 393 struct replica *list = NULL; 394 int mntflags = 0; 395 int i, r, n; 396 int oldvers = 0, vers = 0; 397 int last_error = RET_OK; 398 int replicated = 0; 399 char *p; 400 bool_t url; 401 bool_t use_pubfh; 402 char *special = NULL; 403 char *oldpath = NULL; 404 char *newpath = NULL; 405 char *service; 406 pid_t pi; 407 struct flock f; 408 char *saveopts = NULL; 409 char **sl = NULL; 410 411 mntp->mnt_fstype = MNTTYPE_NFS; 412 413 if (ro) { 414 mntflags |= MS_RDONLY; 415 /* convert "rw"->"ro" */ 416 if (p = strstr(mntp->mnt_mntopts, "rw")) { 417 if (*(p+2) == ',' || *(p+2) == '\0') 418 *(p+1) = 'o'; 419 } 420 } 421 422 if (Oflg) 423 mntflags |= MS_OVERLAY; 424 425 list = parse_replica(mntp->mnt_special, &n); 426 if (list == NULL) { 427 if (n < 0) 428 pr_err(gettext("nfs file system; use [host:]path\n")); 429 else 430 pr_err(gettext("no memory\n")); 431 return (RET_ERR); 432 } 433 434 replicated = (n > 1); 435 436 /* 437 * There are some free() calls at the bottom of this loop, so be 438 * careful about adding continue statements. 439 */ 440 for (i = 0; i < n; i++) { 441 char *path; 442 char *host; 443 ushort_t port; 444 445 argp = (struct nfs_args *)malloc(sizeof (*argp)); 446 if (argp == NULL) { 447 pr_err(gettext("no memory\n")); 448 last_error = RET_ERR; 449 goto out; 450 } 451 memset(argp, 0, sizeof (*argp)); 452 453 memset(&nfs_sec, 0, sizeof (nfs_sec)); 454 sec_opt = 0; 455 use_pubfh = FALSE; 456 url = FALSE; 457 port = 0; 458 snego_done = FALSE; 459 460 /* 461 * Looking for resources of the form 462 * nfs://server_host[:port_number]/path_name 463 */ 464 if (strcmp(list[i].host, "nfs") == 0 && strncmp(list[i].path, 465 "//", 2) == 0) { 466 char *sport, *cb; 467 url = TRUE; 468 oldpath = strdup(list[i].path); 469 if (oldpath == NULL) { 470 pr_err(gettext("memory allocation failure\n")); 471 last_error = RET_ERR; 472 goto out; 473 } 474 host = list[i].path+2; 475 path = strchr(host, '/'); 476 477 if (path == NULL) { 478 pr_err(gettext( 479 "illegal nfs url syntax\n")); 480 last_error = RET_ERR; 481 goto out; 482 } 483 484 *path = '\0'; 485 if (*host == '[') { 486 cb = strchr(host, ']'); 487 if (cb == NULL) { 488 pr_err(gettext( 489 "illegal nfs url syntax\n")); 490 last_error = RET_ERR; 491 goto out; 492 } else { 493 *cb = '\0'; 494 host++; 495 cb++; 496 if (*cb == ':') 497 port = htons((ushort_t) 498 atoi(cb+1)); 499 } 500 } else { 501 sport = strchr(host, ':'); 502 503 if (sport != NULL && sport < path) { 504 *sport = '\0'; 505 port = htons((ushort_t)atoi(sport+1)); 506 } 507 } 508 509 path++; 510 if (*path == '\0') 511 path = "."; 512 513 } else { 514 host = list[i].host; 515 path = list[i].path; 516 } 517 518 if (r = set_args(&mntflags, argp, host, mntp)) { 519 last_error = r; 520 goto out; 521 } 522 523 if (public_opt == TRUE) 524 use_pubfh = TRUE; 525 526 if (port == 0) { 527 port = nfs_port; 528 } else if (nfs_port != 0 && nfs_port != port) { 529 pr_err(gettext( 530 "port (%u) in nfs URL not the same" 531 " as port (%u) in port option\n"), 532 (unsigned int)ntohs(port), 533 (unsigned int)ntohs(nfs_port)); 534 last_error = RET_ERR; 535 goto out; 536 } 537 538 539 if (replicated && !(mntflags & MS_RDONLY)) { 540 pr_err(gettext( 541 "replicated mounts must be read-only\n")); 542 last_error = RET_ERR; 543 goto out; 544 } 545 546 if (replicated && (argp->flags & NFSMNT_SOFT)) { 547 pr_err(gettext( 548 "replicated mounts must not be soft\n")); 549 last_error = RET_ERR; 550 goto out; 551 } 552 553 oldvers = vers; 554 nconf = NULL; 555 556 r = RET_ERR; 557 558 /* 559 * If -o public was specified, and/or a URL was specified, 560 * then try the public file handle method. 561 */ 562 if ((use_pubfh == TRUE) || (url == TRUE)) { 563 r = get_fh_via_pub(argp, host, path, url, use_pubfh, 564 &vers, &nconf, port); 565 566 if (r != RET_OK) { 567 /* 568 * If -o public was specified, then return the 569 * error now. 570 */ 571 if (use_pubfh == TRUE) { 572 last_error = r; 573 goto out; 574 } 575 } else 576 use_pubfh = TRUE; 577 argp->flags |= NFSMNT_PUBLIC; 578 } 579 580 if ((r != RET_OK) || (vers == NFS_V4)) { 581 bool_t loud_on_mnt_err; 582 583 /* 584 * This can happen if -o public is not specified, 585 * special is a URL, and server doesn't support 586 * public file handle. 587 */ 588 if (url) { 589 URLparse(path); 590 } 591 592 /* 593 * If the path portion of the URL didn't have 594 * a leading / then there is good possibility 595 * that a mount without a leading slash will 596 * fail. 597 */ 598 if (url == TRUE && *path != '/') 599 loud_on_mnt_err = FALSE; 600 else 601 loud_on_mnt_err = TRUE; 602 603 r = get_fh(argp, host, path, &vers, 604 loud_on_mnt_err, &nconf, port); 605 606 if (r != RET_OK) { 607 608 /* 609 * If there was no leading / and the path was 610 * derived from a URL, then try again 611 * with a leading /. 612 */ 613 if ((r == RET_MNTERR) && 614 (loud_on_mnt_err == FALSE)) { 615 616 newpath = malloc(strlen(path)+2); 617 618 if (newpath == NULL) { 619 pr_err(gettext("memory " 620 "allocation failure\n")); 621 last_error = RET_ERR; 622 goto out; 623 } 624 625 strcpy(newpath, "/"); 626 strcat(newpath, path); 627 628 r = get_fh(argp, host, newpath, &vers, 629 TRUE, &nconf, port); 630 631 if (r == RET_OK) 632 path = newpath; 633 } 634 635 /* 636 * map exit code back to RET_ERR. 637 */ 638 if (r == RET_MNTERR) 639 r = RET_ERR; 640 641 if (r != RET_OK) { 642 643 if (replicated) { 644 if (argp->fh) 645 free(argp->fh); 646 if (argp->pathconf) 647 free(argp->pathconf); 648 free(argp); 649 goto cont; 650 } 651 652 last_error = r; 653 goto out; 654 } 655 } 656 } 657 658 if (oldvers && vers != oldvers) { 659 pr_err( 660 gettext("replicas must have the same version\n")); 661 last_error = RET_ERR; 662 goto out; 663 } 664 665 /* 666 * decide whether to use remote host's 667 * lockd or do local locking 668 */ 669 if (!(argp->flags & NFSMNT_LLOCK) && vers == NFS_VERSION && 670 remote_lock(host, argp->fh)) { 671 (void) fprintf(stderr, gettext( 672 "WARNING: No network locking on %s:%s:"), 673 host, path); 674 (void) fprintf(stderr, gettext( 675 " contact admin to install server change\n")); 676 argp->flags |= NFSMNT_LLOCK; 677 } 678 679 if (self_check(host)) 680 argp->flags |= NFSMNT_LOOPBACK; 681 682 if (use_pubfh == FALSE) { 683 /* 684 * Call to get_fh() above may have obtained the 685 * netconfig info and NULL proc'd the server. 686 * This would be the case with v4 687 */ 688 if (!(argp->flags & NFSMNT_KNCONF)) { 689 nconf = NULL; 690 if (r = getaddr_nfs(argp, host, &nconf, 691 FALSE, path, port, retry_error, 692 TRUE)) { 693 last_error = r; 694 goto out; 695 } 696 } 697 } 698 699 if (make_secure(argp, host, nconf, use_pubfh, vers) < 0) { 700 last_error = RET_ERR; 701 goto out; 702 } 703 704 if ((url == TRUE) && (use_pubfh == FALSE)) { 705 /* 706 * Convert the special from 707 * nfs://host/path 708 * to 709 * host:path 710 */ 711 if (convert_special(&special, host, oldpath, path, 712 mntp->mnt_special) == -1) { 713 (void) fprintf(stderr, gettext( 714 "could not convert URL nfs:%s to %s:%s\n"), 715 oldpath, host, path); 716 last_error = RET_ERR; 717 goto out; 718 } else { 719 mntp->mnt_special = special; 720 } 721 } 722 723 if (prev_argp == NULL) 724 args = argp; 725 else 726 prev_argp->nfs_ext_u.nfs_extB.next = argp; 727 prev_argp = argp; 728 729 cont: 730 if (oldpath != NULL) { 731 free(oldpath); 732 oldpath = NULL; 733 } 734 735 if (newpath != NULL) { 736 free(newpath); 737 newpath = NULL; 738 } 739 } 740 741 argp = NULL; 742 743 if (args == NULL) { 744 last_error = RET_RETRY; 745 goto out; 746 } 747 748 /* Determine which services are appropriate for the NFS version */ 749 if (strcmp(fstype, MNTTYPE_NFS4) == 0) 750 sl = service_list_v4; 751 else 752 sl = service_list; 753 754 /* 755 * enable services as needed. 756 */ 757 _check_services(sl); 758 759 mntflags |= MS_DATA | MS_OPTIONSTR; 760 761 if (mflg) 762 mntflags |= MS_NOMNTTAB; 763 764 if (!qflg) 765 saveopts = strdup(mntp->mnt_mntopts); 766 767 /* 768 * And make sure that we have the ephemeral mount_to 769 * set for this zone. 770 */ 771 set_nfsv4_ephemeral_mount_to(); 772 773 if (mount(mntp->mnt_special, mntp->mnt_mountp, mntflags, fstype, args, 774 sizeof (*args), mntp->mnt_mntopts, MAX_MNTOPT_STR) < 0) { 775 if (errno != ENOENT) { 776 pr_err(gettext("mount: %s: %s\n"), 777 mntp->mnt_mountp, strerror(errno)); 778 } else { 779 struct stat sb; 780 if (stat(mntp->mnt_mountp, &sb) < 0 && errno == ENOENT) 781 pr_err(gettext("mount: %s: %s\n"), 782 mntp->mnt_mountp, strerror(ENOENT)); 783 else 784 pr_err("%s: %s\n", mntp->mnt_special, 785 strerror(ENOENT)); 786 } 787 788 last_error = RET_ERR; 789 goto out; 790 } 791 792 if (!qflg && saveopts != NULL) { 793 cmp_requested_to_actual_options(saveopts, mntp->mnt_mntopts, 794 mntp->mnt_special, mntp->mnt_mountp); 795 } 796 797 out: 798 if (saveopts != NULL) 799 free(saveopts); 800 if (special != NULL) 801 free(special); 802 if (oldpath != NULL) 803 free(oldpath); 804 if (newpath != NULL) 805 free(newpath); 806 807 free_replica(list, n); 808 809 if (argp != NULL) { 810 /* 811 * If we had a new entry which was not added to the 812 * list yet, then add it now that it can be freed. 813 */ 814 if (prev_argp == NULL) 815 args = argp; 816 else 817 prev_argp->nfs_ext_u.nfs_extB.next = argp; 818 } 819 argp = args; 820 while (argp != NULL) { 821 if (argp->fh) 822 free(argp->fh); 823 if (argp->pathconf) 824 free(argp->pathconf); 825 if (argp->knconf) 826 free(argp->knconf); 827 if (argp->addr) { 828 free(argp->addr->buf); 829 free(argp->addr); 830 } 831 nfs_free_secdata(argp->nfs_ext_u.nfs_extB.secdata); 832 if (argp->syncaddr) { 833 free(argp->syncaddr->buf); 834 free(argp->syncaddr); 835 } 836 if (argp->netname) 837 free(argp->netname); 838 prev_argp = argp; 839 argp = argp->nfs_ext_u.nfs_extB.next; 840 free(prev_argp); 841 } 842 843 return (last_error); 844 } 845 846 /* 847 * These options are duplicated in uts/common/fs/nfs/nfs_dlinet.c 848 * Changes must be made to both lists. 849 */ 850 static char *optlist[] = { 851 #define OPT_RO 0 852 MNTOPT_RO, 853 #define OPT_RW 1 854 MNTOPT_RW, 855 #define OPT_QUOTA 2 856 MNTOPT_QUOTA, 857 #define OPT_NOQUOTA 3 858 MNTOPT_NOQUOTA, 859 #define OPT_SOFT 4 860 MNTOPT_SOFT, 861 #define OPT_HARD 5 862 MNTOPT_HARD, 863 #define OPT_SUID 6 864 MNTOPT_SUID, 865 #define OPT_NOSUID 7 866 MNTOPT_NOSUID, 867 #define OPT_GRPID 8 868 MNTOPT_GRPID, 869 #define OPT_REMOUNT 9 870 MNTOPT_REMOUNT, 871 #define OPT_NOSUB 10 872 MNTOPT_NOSUB, 873 #define OPT_INTR 11 874 MNTOPT_INTR, 875 #define OPT_NOINTR 12 876 MNTOPT_NOINTR, 877 #define OPT_PORT 13 878 MNTOPT_PORT, 879 #define OPT_SECURE 14 880 MNTOPT_SECURE, 881 #define OPT_RSIZE 15 882 MNTOPT_RSIZE, 883 #define OPT_WSIZE 16 884 MNTOPT_WSIZE, 885 #define OPT_TIMEO 17 886 MNTOPT_TIMEO, 887 #define OPT_RETRANS 18 888 MNTOPT_RETRANS, 889 #define OPT_ACTIMEO 19 890 MNTOPT_ACTIMEO, 891 #define OPT_ACREGMIN 20 892 MNTOPT_ACREGMIN, 893 #define OPT_ACREGMAX 21 894 MNTOPT_ACREGMAX, 895 #define OPT_ACDIRMIN 22 896 MNTOPT_ACDIRMIN, 897 #define OPT_ACDIRMAX 23 898 MNTOPT_ACDIRMAX, 899 #define OPT_BG 24 900 MNTOPT_BG, 901 #define OPT_FG 25 902 MNTOPT_FG, 903 #define OPT_RETRY 26 904 MNTOPT_RETRY, 905 #define OPT_NOAC 27 906 MNTOPT_NOAC, 907 #define OPT_NOCTO 28 908 MNTOPT_NOCTO, 909 #define OPT_LLOCK 29 910 MNTOPT_LLOCK, 911 #define OPT_POSIX 30 912 MNTOPT_POSIX, 913 #define OPT_VERS 31 914 MNTOPT_VERS, 915 #define OPT_PROTO 32 916 MNTOPT_PROTO, 917 #define OPT_SEMISOFT 33 918 MNTOPT_SEMISOFT, 919 #define OPT_NOPRINT 34 920 MNTOPT_NOPRINT, 921 #define OPT_SEC 35 922 MNTOPT_SEC, 923 #define OPT_LARGEFILES 36 924 MNTOPT_LARGEFILES, 925 #define OPT_NOLARGEFILES 37 926 MNTOPT_NOLARGEFILES, 927 #define OPT_PUBLIC 38 928 MNTOPT_PUBLIC, 929 #define OPT_DIRECTIO 39 930 MNTOPT_FORCEDIRECTIO, 931 #define OPT_NODIRECTIO 40 932 MNTOPT_NOFORCEDIRECTIO, 933 #define OPT_XATTR 41 934 MNTOPT_XATTR, 935 #define OPT_NOXATTR 42 936 MNTOPT_NOXATTR, 937 #define OPT_DEVICES 43 938 MNTOPT_DEVICES, 939 #define OPT_NODEVICES 44 940 MNTOPT_NODEVICES, 941 #define OPT_SETUID 45 942 MNTOPT_SETUID, 943 #define OPT_NOSETUID 46 944 MNTOPT_NOSETUID, 945 #define OPT_EXEC 47 946 MNTOPT_EXEC, 947 #define OPT_NOEXEC 48 948 MNTOPT_NOEXEC, 949 NULL 950 }; 951 952 #define bad(val) (val == NULL || !isdigit(*val)) 953 954 static int 955 set_args(int *mntflags, struct nfs_args *args, char *fshost, struct mnttab *mnt) 956 { 957 char *saveopt, *optstr, *opts, *newopts, *val; 958 int largefiles = 0; 959 int invalid = 0; 960 int attrpref = 0; 961 int optlen; 962 963 args->flags = NFSMNT_INT; /* default is "intr" */ 964 args->flags |= NFSMNT_HOSTNAME; 965 args->flags |= NFSMNT_NEWARGS; /* using extented nfs_args structure */ 966 args->hostname = fshost; 967 968 optstr = opts = strdup(mnt->mnt_mntopts); 969 /* sizeof (MNTOPT_XXX) includes one extra byte we may need for "," */ 970 optlen = strlen(mnt->mnt_mntopts) + sizeof (MNTOPT_XATTR) + 1; 971 if (optlen > MAX_MNTOPT_STR) { 972 pr_err(gettext("option string too long")); 973 return (RET_ERR); 974 } 975 newopts = malloc(optlen); 976 if (opts == NULL || newopts == NULL) { 977 pr_err(gettext("no memory")); 978 if (opts) 979 free(opts); 980 if (newopts) 981 free(newopts); 982 return (RET_ERR); 983 } 984 newopts[0] = '\0'; 985 986 while (*opts) { 987 invalid = 0; 988 saveopt = opts; 989 switch (getsubopt(&opts, optlist, &val)) { 990 case OPT_RO: 991 *mntflags |= MS_RDONLY; 992 break; 993 case OPT_RW: 994 *mntflags &= ~(MS_RDONLY); 995 break; 996 case OPT_QUOTA: 997 case OPT_NOQUOTA: 998 break; 999 case OPT_SOFT: 1000 args->flags |= NFSMNT_SOFT; 1001 args->flags &= ~(NFSMNT_SEMISOFT); 1002 break; 1003 case OPT_SEMISOFT: 1004 args->flags |= NFSMNT_SOFT; 1005 args->flags |= NFSMNT_SEMISOFT; 1006 break; 1007 case OPT_HARD: 1008 args->flags &= ~(NFSMNT_SOFT); 1009 args->flags &= ~(NFSMNT_SEMISOFT); 1010 break; 1011 case OPT_SUID: 1012 *mntflags &= ~(MS_NOSUID); 1013 break; 1014 case OPT_NOSUID: 1015 *mntflags |= MS_NOSUID; 1016 break; 1017 case OPT_GRPID: 1018 args->flags |= NFSMNT_GRPID; 1019 break; 1020 case OPT_REMOUNT: 1021 *mntflags |= MS_REMOUNT; 1022 break; 1023 case OPT_INTR: 1024 args->flags |= NFSMNT_INT; 1025 break; 1026 case OPT_NOINTR: 1027 args->flags &= ~(NFSMNT_INT); 1028 break; 1029 case OPT_NOAC: 1030 args->flags |= NFSMNT_NOAC; 1031 break; 1032 case OPT_PORT: 1033 if (bad(val)) 1034 goto badopt; 1035 nfs_port = htons((ushort_t)atoi(val)); 1036 break; 1037 1038 case OPT_SECURE: 1039 if (nfs_getseconfig_byname("dh", &nfs_sec)) { 1040 pr_err(gettext("can not get \"dh\" from %s\n"), 1041 NFSSEC_CONF); 1042 goto badopt; 1043 } 1044 sec_opt++; 1045 break; 1046 1047 case OPT_NOCTO: 1048 args->flags |= NFSMNT_NOCTO; 1049 break; 1050 1051 case OPT_RSIZE: 1052 args->flags |= NFSMNT_RSIZE; 1053 if (bad(val)) 1054 goto badopt; 1055 args->rsize = atoi(val); 1056 break; 1057 case OPT_WSIZE: 1058 args->flags |= NFSMNT_WSIZE; 1059 if (bad(val)) 1060 goto badopt; 1061 args->wsize = atoi(val); 1062 break; 1063 case OPT_TIMEO: 1064 args->flags |= NFSMNT_TIMEO; 1065 if (bad(val)) 1066 goto badopt; 1067 args->timeo = atoi(val); 1068 break; 1069 case OPT_RETRANS: 1070 args->flags |= NFSMNT_RETRANS; 1071 if (bad(val)) 1072 goto badopt; 1073 args->retrans = atoi(val); 1074 break; 1075 case OPT_ACTIMEO: 1076 args->flags |= NFSMNT_ACDIRMAX; 1077 args->flags |= NFSMNT_ACREGMAX; 1078 args->flags |= NFSMNT_ACDIRMIN; 1079 args->flags |= NFSMNT_ACREGMIN; 1080 if (bad(val)) 1081 goto badopt; 1082 args->acdirmin = args->acregmin = args->acdirmax 1083 = args->acregmax = atoi(val); 1084 break; 1085 case OPT_ACREGMIN: 1086 args->flags |= NFSMNT_ACREGMIN; 1087 if (bad(val)) 1088 goto badopt; 1089 args->acregmin = atoi(val); 1090 break; 1091 case OPT_ACREGMAX: 1092 args->flags |= NFSMNT_ACREGMAX; 1093 if (bad(val)) 1094 goto badopt; 1095 args->acregmax = atoi(val); 1096 break; 1097 case OPT_ACDIRMIN: 1098 args->flags |= NFSMNT_ACDIRMIN; 1099 if (bad(val)) 1100 goto badopt; 1101 args->acdirmin = atoi(val); 1102 break; 1103 case OPT_ACDIRMAX: 1104 args->flags |= NFSMNT_ACDIRMAX; 1105 if (bad(val)) 1106 goto badopt; 1107 args->acdirmax = atoi(val); 1108 break; 1109 case OPT_BG: 1110 bg++; 1111 break; 1112 case OPT_FG: 1113 bg = 0; 1114 break; 1115 case OPT_RETRY: 1116 if (bad(val)) 1117 goto badopt; 1118 retries = atoi(val); 1119 break; 1120 case OPT_LLOCK: 1121 args->flags |= NFSMNT_LLOCK; 1122 break; 1123 case OPT_POSIX: 1124 posix = 1; 1125 break; 1126 case OPT_VERS: 1127 if (bad(val)) 1128 goto badopt; 1129 nfsvers = (rpcvers_t)atoi(val); 1130 break; 1131 case OPT_PROTO: 1132 if (val == NULL) 1133 goto badopt; 1134 1135 nfs_proto = (char *)malloc(strlen(val)+1); 1136 if (!nfs_proto) { 1137 pr_err(gettext("no memory")); 1138 return (RET_ERR); 1139 } 1140 1141 (void) strncpy(nfs_proto, val, strlen(val)+1); 1142 break; 1143 1144 case OPT_NOPRINT: 1145 args->flags |= NFSMNT_NOPRINT; 1146 break; 1147 1148 case OPT_LARGEFILES: 1149 largefiles = 1; 1150 break; 1151 1152 case OPT_NOLARGEFILES: 1153 pr_err(gettext("NFS can't support \"nolargefiles\"\n")); 1154 free(optstr); 1155 return (RET_ERR); 1156 1157 case OPT_SEC: 1158 if (val == NULL) { 1159 pr_err(gettext( 1160 "\"sec\" option requires argument\n")); 1161 return (RET_ERR); 1162 } 1163 if (nfs_getseconfig_byname(val, &nfs_sec)) { 1164 pr_err(gettext("can not get \"%s\" from %s\n"), 1165 val, NFSSEC_CONF); 1166 return (RET_ERR); 1167 } 1168 sec_opt++; 1169 break; 1170 1171 case OPT_PUBLIC: 1172 public_opt = TRUE; 1173 break; 1174 1175 case OPT_DIRECTIO: 1176 args->flags |= NFSMNT_DIRECTIO; 1177 break; 1178 1179 case OPT_NODIRECTIO: 1180 args->flags &= ~(NFSMNT_DIRECTIO); 1181 break; 1182 1183 case OPT_XATTR: 1184 case OPT_NOXATTR: 1185 /* 1186 * VFS options; just need to get them into the 1187 * new mount option string and note we've seen them 1188 */ 1189 attrpref = 1; 1190 break; 1191 default: 1192 /* 1193 * Note that this could be a valid OPT_* option so 1194 * we can't use "val" but need to use "saveopt". 1195 */ 1196 if (fsisstdopt(saveopt)) 1197 break; 1198 invalid = 1; 1199 if (!qflg) 1200 (void) fprintf(stderr, gettext( 1201 "mount: %s on %s - WARNING unknown option" 1202 " \"%s\"\n"), mnt->mnt_special, 1203 mnt->mnt_mountp, saveopt); 1204 break; 1205 } 1206 if (!invalid) { 1207 if (newopts[0]) 1208 strcat(newopts, ","); 1209 strcat(newopts, saveopt); 1210 } 1211 } 1212 /* Default is to turn extended attrs on */ 1213 if (!attrpref) { 1214 if (newopts[0]) 1215 strcat(newopts, ","); 1216 strcat(newopts, MNTOPT_XATTR); 1217 } 1218 strcpy(mnt->mnt_mntopts, newopts); 1219 free(newopts); 1220 free(optstr); 1221 1222 /* ensure that only one secure mode is requested */ 1223 if (sec_opt > 1) { 1224 pr_err(gettext("Security options conflict\n")); 1225 return (RET_ERR); 1226 } 1227 1228 /* ensure that the user isn't trying to get large files over V2 */ 1229 if (nfsvers == NFS_VERSION && largefiles) { 1230 pr_err(gettext("NFS V2 can't support \"largefiles\"\n")); 1231 return (RET_ERR); 1232 } 1233 1234 if (nfsvers == NFS_V4 && 1235 nfs_proto != NULL && 1236 strncasecmp(nfs_proto, NC_UDP, strlen(NC_UDP)) == 0) { 1237 pr_err(gettext("NFS V4 does not support %s\n"), nfs_proto); 1238 return (RET_ERR); 1239 } 1240 1241 return (RET_OK); 1242 1243 badopt: 1244 pr_err(gettext("invalid option: \"%s\"\n"), saveopt); 1245 free(optstr); 1246 return (RET_ERR); 1247 } 1248 1249 static int 1250 make_secure(struct nfs_args *args, char *hostname, struct netconfig *nconf, 1251 bool_t use_pubfh, rpcvers_t vers) 1252 { 1253 sec_data_t *secdata; 1254 int flags; 1255 struct netbuf *syncaddr = NULL; 1256 struct nd_addrlist *retaddrs = NULL; 1257 char netname[MAXNETNAMELEN+1]; 1258 1259 /* 1260 * check to see if any secure mode is requested. 1261 * if not, use default security mode. 1262 */ 1263 if (!snego_done && !sec_opt) { 1264 /* 1265 * Get default security mode. 1266 * AUTH_UNIX has been the default choice for a long time. 1267 * The better NFS security service becomes, the better chance 1268 * we will set stronger security service as the default NFS 1269 * security mode. 1270 */ 1271 if (nfs_getseconfig_default(&nfs_sec)) { 1272 pr_err(gettext("error getting default" 1273 " security entry\n")); 1274 return (-1); 1275 } 1276 args->flags |= NFSMNT_SECDEFAULT; 1277 } 1278 1279 /* 1280 * Get the network address for the time service on the server. 1281 * If an RPC based time service is not available then try the 1282 * IP time service. 1283 * 1284 * This is for AUTH_DH processing. We will also pass down syncaddr 1285 * and netname for NFS V4 even if AUTH_DH is not requested right now. 1286 * NFS V4 does security negotiation in the kernel via SECINFO. 1287 * These information might be needed later in the kernel. 1288 * 1289 * Eventurally, we want to move this code to nfs_clnt_secdata() 1290 * when autod_nfs.c and mount.c can share the same get_the_addr() 1291 * routine. 1292 */ 1293 flags = 0; 1294 syncaddr = NULL; 1295 1296 if (nfs_sec.sc_rpcnum == AUTH_DH || vers == NFS_V4) { 1297 /* 1298 * If using the public fh or nfsv4, we will not contact the 1299 * remote RPCBINDer, since it is possibly behind a firewall. 1300 */ 1301 if (use_pubfh == FALSE && vers != NFS_V4) 1302 syncaddr = get_the_addr(hostname, RPCBPROG, RPCBVERS, 1303 nconf, 0, NULL, NULL, FALSE, NULL, NULL); 1304 1305 if (syncaddr != NULL) { 1306 /* for flags in sec_data */ 1307 flags |= AUTH_F_RPCTIMESYNC; 1308 } else { 1309 struct nd_hostserv hs; 1310 int error; 1311 1312 hs.h_host = hostname; 1313 hs.h_serv = "timserver"; 1314 1315 error = netdir_getbyname(nconf, &hs, &retaddrs); 1316 1317 if (error != ND_OK && (nfs_sec.sc_rpcnum == AUTH_DH)) { 1318 pr_err(gettext("%s: secure: no time service\n"), 1319 hostname); 1320 return (-1); 1321 } 1322 1323 if (error == ND_OK) 1324 syncaddr = retaddrs->n_addrs; 1325 1326 /* 1327 * For NFS_V4 if AUTH_DH is negotiated later in the 1328 * kernel thru SECINFO, it will need syncaddr 1329 * and netname data. 1330 */ 1331 if (vers == NFS_V4 && syncaddr && 1332 host2netname(netname, hostname, NULL)) { 1333 args->syncaddr = malloc(sizeof (struct netbuf)); 1334 args->syncaddr->buf = malloc(syncaddr->len); 1335 (void) memcpy(args->syncaddr->buf, 1336 syncaddr->buf, syncaddr->len); 1337 args->syncaddr->len = syncaddr->len; 1338 args->syncaddr->maxlen = syncaddr->maxlen; 1339 args->netname = strdup(netname); 1340 args->flags |= NFSMNT_SECURE; 1341 } 1342 } 1343 } 1344 1345 /* 1346 * For the initial chosen flavor (any flavor defined in nfssec.conf), 1347 * the data will be stored in the sec_data structure via 1348 * nfs_clnt_secdata() and be passed to the kernel via nfs_args_* 1349 * extended data structure. 1350 */ 1351 if (!(secdata = nfs_clnt_secdata(&nfs_sec, hostname, args->knconf, 1352 syncaddr, flags))) { 1353 pr_err(gettext("errors constructing security related data\n")); 1354 if (flags & AUTH_F_RPCTIMESYNC) { 1355 free(syncaddr->buf); 1356 free(syncaddr); 1357 } else if (retaddrs) 1358 netdir_free((void *)retaddrs, ND_ADDRLIST); 1359 return (-1); 1360 } 1361 1362 NFS_ARGS_EXTB_secdata(args, secdata); 1363 if (flags & AUTH_F_RPCTIMESYNC) { 1364 free(syncaddr->buf); 1365 free(syncaddr); 1366 } else if (retaddrs) 1367 netdir_free((void *)retaddrs, ND_ADDRLIST); 1368 return (0); 1369 } 1370 1371 /* 1372 * Get the network address on "hostname" for program "prog" 1373 * with version "vers" by using the nconf configuration data 1374 * passed in. 1375 * 1376 * If the address of a netconfig pointer is null then 1377 * information is not sufficient and no netbuf will be returned. 1378 * 1379 * Finally, ping the null procedure of that service. 1380 * 1381 * A similar routine is also defined in ../../autofs/autod_nfs.c. 1382 * This is a potential routine to move to ../lib for common usage. 1383 */ 1384 static struct netbuf * 1385 get_the_addr(char *hostname, ulong_t prog, ulong_t vers, 1386 struct netconfig *nconf, ushort_t port, struct t_info *tinfo, 1387 caddr_t *fhp, bool_t get_pubfh, char *fspath, err_ret_t *error) 1388 { 1389 struct netbuf *nb = NULL; 1390 struct t_bind *tbind = NULL; 1391 CLIENT *cl = NULL; 1392 struct timeval tv; 1393 int fd = -1; 1394 AUTH *ah = NULL; 1395 AUTH *new_ah = NULL; 1396 struct snego_t snego; 1397 1398 if (nconf == NULL) 1399 return (NULL); 1400 1401 if ((fd = t_open(nconf->nc_device, O_RDWR, tinfo)) == -1) 1402 goto done; 1403 1404 /* LINTED pointer alignment */ 1405 if ((tbind = (struct t_bind *)t_alloc(fd, T_BIND, T_ADDR)) 1406 == NULL) 1407 goto done; 1408 1409 /* 1410 * In the case of public filehandle usage or NFSv4 we want to 1411 * avoid use of the rpcbind/portmap protocol 1412 */ 1413 if ((get_pubfh == TRUE) || (vers == NFS_V4)) { 1414 struct nd_hostserv hs; 1415 struct nd_addrlist *retaddrs; 1416 int retval; 1417 hs.h_host = hostname; 1418 1419 /* NFS where vers==4 does not support UDP */ 1420 if (vers == NFS_V4 && 1421 strncasecmp(nconf->nc_proto, NC_UDP, 1422 strlen(NC_UDP)) == 0) { 1423 SET_ERR_RET(error, ERR_PROTO_UNSUPP, 0); 1424 goto done; 1425 } 1426 1427 if (port == 0) 1428 hs.h_serv = "nfs"; 1429 else 1430 hs.h_serv = NULL; 1431 1432 if ((retval = netdir_getbyname(nconf, &hs, &retaddrs)) 1433 != ND_OK) { 1434 /* 1435 * Carefully set the error value here. Want to signify 1436 * that the error was an unknown host. 1437 */ 1438 if (retval == ND_NOHOST) { 1439 SET_ERR_RET(error, ERR_NOHOST, retval); 1440 } 1441 1442 goto done; 1443 } 1444 memcpy(tbind->addr.buf, retaddrs->n_addrs->buf, 1445 retaddrs->n_addrs->len); 1446 tbind->addr.len = retaddrs->n_addrs->len; 1447 netdir_free((void *)retaddrs, ND_ADDRLIST); 1448 (void) netdir_options(nconf, ND_SET_RESERVEDPORT, fd, NULL); 1449 1450 } else { 1451 if (rpcb_getaddr(prog, vers, nconf, &tbind->addr, 1452 hostname) == FALSE) { 1453 goto done; 1454 } 1455 } 1456 1457 if (port) { 1458 /* LINTED pointer alignment */ 1459 if (strcmp(nconf->nc_protofmly, NC_INET) == 0) 1460 ((struct sockaddr_in *)tbind->addr.buf)->sin_port 1461 = port; 1462 else if (strcmp(nconf->nc_protofmly, NC_INET6) == 0) 1463 ((struct sockaddr_in6 *)tbind->addr.buf)->sin6_port 1464 = port; 1465 1466 } 1467 1468 cl = clnt_tli_create(fd, nconf, &tbind->addr, prog, vers, 0, 0); 1469 if (cl == NULL) { 1470 /* 1471 * clnt_tli_create() returns either RPC_SYSTEMERROR, 1472 * RPC_UNKNOWNPROTO or RPC_TLIERROR. The RPC_TLIERROR translates 1473 * to "Misc. TLI error". This is not too helpful. Most likely 1474 * the connection to the remote server timed out, so this 1475 * error is at least less perplexing. 1476 * See: usr/src/cmd/rpcinfo/rpcinfo.c 1477 */ 1478 if (rpc_createerr.cf_stat == RPC_TLIERROR) { 1479 SET_ERR_RET(error, ERR_RPCERROR, RPC_PMAPFAILURE); 1480 } else { 1481 SET_ERR_RET(error, ERR_RPCERROR, rpc_createerr.cf_stat); 1482 } 1483 goto done; 1484 } 1485 1486 ah = authsys_create_default(); 1487 if (ah != NULL) 1488 cl->cl_auth = ah; 1489 1490 tv.tv_sec = 5; 1491 tv.tv_usec = 0; 1492 1493 (void) clnt_control(cl, CLSET_TIMEOUT, (char *)&tv); 1494 1495 if ((get_pubfh == TRUE) && (vers != NFS_V4)) { 1496 enum snego_stat sec; 1497 1498 if (!snego_done) { 1499 /* 1500 * negotiate sec flavor. 1501 */ 1502 snego.cnt = 0; 1503 if ((sec = nfs_sec_nego(vers, cl, fspath, &snego)) == 1504 SNEGO_SUCCESS) { 1505 int jj; 1506 1507 /* 1508 * check if server supports the one 1509 * specified in the sec= option. 1510 */ 1511 if (sec_opt) { 1512 for (jj = 0; jj < snego.cnt; jj++) { 1513 if (snego.array[jj] == 1514 nfs_sec.sc_nfsnum) { 1515 snego_done = TRUE; 1516 break; 1517 } 1518 } 1519 } 1520 1521 /* 1522 * find a common sec flavor 1523 */ 1524 if (!snego_done) { 1525 if (sec_opt) { 1526 pr_err(gettext( 1527 "Server does not support" 1528 " the security flavor" 1529 " specified.\n")); 1530 } 1531 1532 for (jj = 0; jj < snego.cnt; jj++) { 1533 if (!nfs_getseconfig_bynumber( 1534 snego.array[jj], 1535 &nfs_sec)) { 1536 snego_done = TRUE; 1537 #define EMSG80SUX "Security flavor %d was negotiated and will be used.\n" 1538 if (sec_opt) 1539 pr_err(gettext( 1540 EMSG80SUX), 1541 nfs_sec. 1542 sc_nfsnum); 1543 break; 1544 } 1545 } 1546 } 1547 1548 if (!snego_done) 1549 return (NULL); 1550 1551 /* 1552 * Now that the flavor has been 1553 * negotiated, get the fh. 1554 * 1555 * First, create an auth handle using the 1556 * negotiated sec flavor in the next lookup to 1557 * fetch the filehandle. 1558 */ 1559 new_ah = nfs_create_ah(cl, hostname, &nfs_sec); 1560 if (new_ah == NULL) 1561 goto done; 1562 cl->cl_auth = new_ah; 1563 } else if (sec == SNEGO_ARRAY_TOO_SMALL || sec == 1564 SNEGO_FAILURE) { 1565 goto done; 1566 } 1567 1568 /* 1569 * Note that if sec == SNEGO_DEF_VALID 1570 * default sec flavor is acceptable. 1571 * Use it to get the filehandle. 1572 */ 1573 } 1574 1575 if (vers == NFS_VERSION) { 1576 wnl_diropargs arg; 1577 wnl_diropres res; 1578 1579 memset((char *)&arg.dir, 0, sizeof (wnl_fh)); 1580 arg.name = fspath; 1581 memset((char *)&res, 0, sizeof (wnl_diropres)); 1582 if (wnlproc_lookup_2(&arg, &res, cl) != 1583 RPC_SUCCESS || res.status != NFS_OK) 1584 goto done; 1585 1586 *fhp = malloc(sizeof (wnl_fh)); 1587 1588 if (*fhp == NULL) { 1589 pr_err(gettext("no memory\n")); 1590 goto done; 1591 } 1592 1593 memcpy((char *)*fhp, 1594 (char *)&res.wnl_diropres_u.wnl_diropres.file, 1595 sizeof (wnl_fh)); 1596 } else { 1597 WNL_LOOKUP3args arg; 1598 WNL_LOOKUP3res res; 1599 nfs_fh3 *fh3p; 1600 1601 memset((char *)&arg.what.dir, 0, sizeof (wnl_fh3)); 1602 arg.what.name = fspath; 1603 memset((char *)&res, 0, sizeof (WNL_LOOKUP3res)); 1604 if (wnlproc3_lookup_3(&arg, &res, cl) != 1605 RPC_SUCCESS || res.status != NFS3_OK) 1606 goto done; 1607 1608 fh3p = (nfs_fh3 *)malloc(sizeof (*fh3p)); 1609 1610 if (fh3p == NULL) { 1611 pr_err(gettext("no memory\n")); 1612 goto done; 1613 } 1614 1615 fh3p->fh3_length = 1616 res.WNL_LOOKUP3res_u.res_ok.object.data.data_len; 1617 memcpy(fh3p->fh3_u.data, 1618 &res.WNL_LOOKUP3res_u.res_ok.object.data.data_val, 1619 fh3p->fh3_length); 1620 1621 *fhp = (caddr_t)fh3p; 1622 } 1623 } else { 1624 struct rpc_err r_err; 1625 enum clnt_stat rc; 1626 1627 /* 1628 * NULL procedures need not have an argument or 1629 * result param. 1630 */ 1631 if (vers == NFS_VERSION) 1632 rc = wnlproc_null_2(NULL, NULL, cl); 1633 else if (vers == NFS_V3) 1634 rc = wnlproc3_null_3(NULL, NULL, cl); 1635 else 1636 rc = wnlproc4_null_4(NULL, NULL, cl); 1637 1638 if (rc != RPC_SUCCESS) { 1639 clnt_geterr(cl, &r_err); 1640 if (strcmp(nconf->nc_protofmly, NC_LOOPBACK) == 0) { 1641 switch (r_err.re_status) { 1642 case RPC_TLIERROR: 1643 case RPC_CANTRECV: 1644 case RPC_CANTSEND: 1645 r_err.re_status = RPC_PROGVERSMISMATCH; 1646 } 1647 } 1648 SET_ERR_RET(error, ERR_RPCERROR, r_err.re_status); 1649 goto done; 1650 } 1651 } 1652 1653 /* 1654 * Make a copy of the netbuf to return 1655 */ 1656 nb = (struct netbuf *)malloc(sizeof (*nb)); 1657 if (nb == NULL) { 1658 pr_err(gettext("no memory\n")); 1659 goto done; 1660 } 1661 *nb = tbind->addr; 1662 nb->buf = (char *)malloc(nb->maxlen); 1663 if (nb->buf == NULL) { 1664 pr_err(gettext("no memory\n")); 1665 free(nb); 1666 nb = NULL; 1667 goto done; 1668 } 1669 (void) memcpy(nb->buf, tbind->addr.buf, tbind->addr.len); 1670 1671 done: 1672 if (cl) { 1673 if (ah != NULL) { 1674 if (new_ah != NULL) 1675 AUTH_DESTROY(ah); 1676 AUTH_DESTROY(cl->cl_auth); 1677 cl->cl_auth = NULL; 1678 } 1679 clnt_destroy(cl); 1680 cl = NULL; 1681 } 1682 if (tbind) { 1683 t_free((char *)tbind, T_BIND); 1684 tbind = NULL; 1685 } 1686 if (fd >= 0) 1687 (void) t_close(fd); 1688 return (nb); 1689 } 1690 1691 static int 1692 check_nconf(struct netconfig *nconf, int nthtry, int *valid_proto) 1693 { 1694 int try_test = 0; 1695 int valid_family; 1696 char *proto = NULL; 1697 1698 1699 if (nthtry == FIRST_TRY) { 1700 try_test = ((nconf->nc_semantics == NC_TPI_COTS_ORD) || 1701 (nconf->nc_semantics == NC_TPI_COTS)); 1702 proto = NC_TCP; 1703 } else if (nthtry == SECOND_TRY) { 1704 try_test = (nconf->nc_semantics == NC_TPI_CLTS); 1705 proto = NC_UDP; 1706 } 1707 1708 if (proto && 1709 (strcmp(nconf->nc_protofmly, NC_INET) == 0 || 1710 strcmp(nconf->nc_protofmly, NC_INET6) == 0) && 1711 (strcmp(nconf->nc_proto, proto) == 0)) 1712 *valid_proto = TRUE; 1713 else 1714 *valid_proto = FALSE; 1715 1716 return (try_test); 1717 } 1718 1719 /* 1720 * Get a network address on "hostname" for program "prog" 1721 * with version "vers". If the port number is specified (non zero) 1722 * then try for a TCP/UDP transport and set the port number of the 1723 * resulting IP address. 1724 * 1725 * If the address of a netconfig pointer was passed and 1726 * if it's not null, use it as the netconfig otherwise 1727 * assign the address of the netconfig that was used to 1728 * establish contact with the service. 1729 * 1730 * A similar routine is also defined in ../../autofs/autod_nfs.c. 1731 * This is a potential routine to move to ../lib for common usage. 1732 * 1733 * "error" refers to a more descriptive term when get_addr fails 1734 * and returns NULL: ERR_PROTO_NONE if no error introduced by 1735 * -o proto option, ERR_NETPATH if error found in NETPATH 1736 * environment variable, ERR_PROTO_INVALID if an unrecognized 1737 * protocol is specified by user, and ERR_PROTO_UNSUPP for a 1738 * recognized but invalid protocol (eg. ticlts, ticots, etc.). 1739 * "error" is ignored if get_addr returns non-NULL result. 1740 * 1741 */ 1742 static struct netbuf * 1743 get_addr(char *hostname, ulong_t prog, ulong_t vers, struct netconfig **nconfp, 1744 char *proto, ushort_t port, struct t_info *tinfo, caddr_t *fhp, 1745 bool_t get_pubfh, char *fspath, err_ret_t *error) 1746 { 1747 struct netbuf *nb = NULL; 1748 struct netconfig *nconf = NULL; 1749 NCONF_HANDLE *nc = NULL; 1750 int nthtry = FIRST_TRY; 1751 err_ret_t errsave_nohost, errsave_rpcerr; 1752 1753 SET_ERR_RET(&errsave_nohost, ERR_PROTO_NONE, 0); 1754 SET_ERR_RET(&errsave_rpcerr, ERR_PROTO_NONE, 0); 1755 1756 SET_ERR_RET(error, ERR_PROTO_NONE, 0); 1757 1758 if (nconfp && *nconfp) 1759 return (get_the_addr(hostname, prog, vers, *nconfp, port, 1760 tinfo, fhp, get_pubfh, fspath, error)); 1761 /* 1762 * No nconf passed in. 1763 * 1764 * Try to get a nconf from /etc/netconfig filtered by 1765 * the NETPATH environment variable. 1766 * First search for COTS, second for CLTS unless proto 1767 * is specified. When we retry, we reset the 1768 * netconfig list so that we would search the whole list 1769 * all over again. 1770 */ 1771 1772 if ((nc = setnetpath()) == NULL) { 1773 /* should only return an error if problems with NETPATH */ 1774 /* In which case you are hosed */ 1775 SET_ERR_RET(error, ERR_NETPATH, 0); 1776 goto done; 1777 } 1778 1779 /* 1780 * If proto is specified, then only search for the match, 1781 * otherwise try COTS first, if failed, try CLTS. 1782 */ 1783 if (proto) { 1784 /* no matching proto name */ 1785 SET_ERR_RET(error, ERR_PROTO_INVALID, 0); 1786 1787 while (nconf = getnetpath(nc)) { 1788 if (strcmp(nconf->nc_netid, proto)) 1789 continue; 1790 1791 /* may be unsupported */ 1792 SET_ERR_RET(error, ERR_PROTO_UNSUPP, 0); 1793 1794 if ((port != 0) && 1795 ((strcmp(nconf->nc_protofmly, NC_INET) == 0 || 1796 strcmp(nconf->nc_protofmly, NC_INET6) == 0) && 1797 (strcmp(nconf->nc_proto, NC_TCP) != 0 && 1798 strcmp(nconf->nc_proto, NC_UDP) != 0))) { 1799 continue; 1800 } else { 1801 nb = get_the_addr(hostname, prog, 1802 vers, nconf, port, tinfo, 1803 fhp, get_pubfh, fspath, error); 1804 1805 if (nb != NULL) 1806 break; 1807 1808 /* nb is NULL - deal with errors */ 1809 if (error) { 1810 if (error->error_type == ERR_NOHOST) 1811 SET_ERR_RET(&errsave_nohost, 1812 error->error_type, 1813 error->error_value); 1814 if (error->error_type == ERR_RPCERROR) 1815 SET_ERR_RET(&errsave_rpcerr, 1816 error->error_type, 1817 error->error_value); 1818 } 1819 /* 1820 * continue with same protocol 1821 * selection 1822 */ 1823 continue; 1824 } 1825 } /* end of while */ 1826 1827 if (nconf == NULL) 1828 goto done; 1829 1830 if ((nb = get_the_addr(hostname, prog, vers, nconf, port, 1831 tinfo, fhp, get_pubfh, fspath, error)) == NULL) 1832 goto done; 1833 } else { 1834 retry: 1835 SET_ERR_RET(error, ERR_NETPATH, 0); 1836 while (nconf = getnetpath(nc)) { 1837 SET_ERR_RET(error, ERR_PROTO_NONE, 0); 1838 1839 if (nconf->nc_flag & NC_VISIBLE) { 1840 int valid_proto; 1841 1842 if (check_nconf(nconf, 1843 nthtry, &valid_proto)) { 1844 if (port == 0) 1845 break; 1846 1847 if (valid_proto == TRUE) 1848 break; 1849 } 1850 } 1851 } /* while */ 1852 if (nconf == NULL) { 1853 if (++nthtry <= MNT_PREF_LISTLEN) { 1854 endnetpath(nc); 1855 if ((nc = setnetpath()) == NULL) 1856 goto done; 1857 goto retry; 1858 } else 1859 goto done; 1860 } else { 1861 if ((nb = get_the_addr(hostname, prog, vers, nconf, 1862 port, tinfo, fhp, get_pubfh, fspath, error)) 1863 == NULL) { 1864 /* nb is NULL - deal with errors */ 1865 if (error) { 1866 if (error->error_type == ERR_NOHOST) 1867 SET_ERR_RET(&errsave_nohost, 1868 error->error_type, 1869 error->error_value); 1870 if (error->error_type == ERR_RPCERROR) 1871 SET_ERR_RET(&errsave_rpcerr, 1872 error->error_type, 1873 error->error_value); 1874 } 1875 /* 1876 * Continue the same search path in the 1877 * netconfig db until no more matched 1878 * nconf (nconf == NULL). 1879 */ 1880 goto retry; 1881 } 1882 } 1883 } 1884 SET_ERR_RET(error, ERR_PROTO_NONE, 0); 1885 1886 /* 1887 * Got nconf and nb. Now dup the netconfig structure (nconf) 1888 * and return it thru nconfp. 1889 */ 1890 *nconfp = getnetconfigent(nconf->nc_netid); 1891 if (*nconfp == NULL) { 1892 syslog(LOG_ERR, "no memory\n"); 1893 free(nb); 1894 nb = NULL; 1895 } 1896 done: 1897 if (nc) 1898 endnetpath(nc); 1899 1900 if (nb == NULL) { 1901 /* 1902 * Check the saved errors. The RPC error has * 1903 * precedence over the no host error. 1904 */ 1905 if (errsave_nohost.error_type != ERR_PROTO_NONE) 1906 SET_ERR_RET(error, errsave_nohost.error_type, 1907 errsave_nohost.error_value); 1908 1909 if (errsave_rpcerr.error_type != ERR_PROTO_NONE) 1910 SET_ERR_RET(error, errsave_rpcerr.error_type, 1911 errsave_rpcerr.error_value); 1912 } 1913 1914 return (nb); 1915 } 1916 1917 /* 1918 * Get a file handle usinging multi-component lookup with the public 1919 * file handle. 1920 */ 1921 static int 1922 get_fh_via_pub(struct nfs_args *args, char *fshost, char *fspath, bool_t url, 1923 bool_t loud, int *versp, struct netconfig **nconfp, ushort_t port) 1924 { 1925 uint_t vers_min; 1926 uint_t vers_max; 1927 int r; 1928 char *path; 1929 1930 if (nfsvers != 0) { 1931 vers_max = vers_min = nfsvers; 1932 } else { 1933 vers_max = vers_max_default; 1934 vers_min = vers_min_default; 1935 } 1936 1937 if (url == FALSE) { 1938 path = malloc(strlen(fspath) + 2); 1939 if (path == NULL) { 1940 if (loud == TRUE) 1941 pr_err(gettext("no memory\n")); 1942 return (RET_ERR); 1943 } 1944 1945 path[0] = (char)WNL_NATIVEPATH; 1946 (void) strcpy(&path[1], fspath); 1947 1948 } else { 1949 path = fspath; 1950 } 1951 1952 for (nfsvers_to_use = vers_max; nfsvers_to_use >= vers_min; 1953 nfsvers_to_use--) { 1954 /* 1955 * getaddr_nfs will also fill in the fh for us. 1956 */ 1957 r = getaddr_nfs(args, fshost, nconfp, 1958 TRUE, path, port, NULL, FALSE); 1959 1960 if (r == RET_OK) { 1961 /* 1962 * Since we are using the public fh, and NLM is 1963 * not firewall friendly, use local locking. 1964 * Not the case for v4. 1965 */ 1966 *versp = nfsvers_to_use; 1967 switch (nfsvers_to_use) { 1968 case NFS_V4: 1969 fstype = MNTTYPE_NFS4; 1970 break; 1971 case NFS_V3: 1972 fstype = MNTTYPE_NFS3; 1973 /* fall through to pick up llock option */ 1974 default: 1975 args->flags |= NFSMNT_LLOCK; 1976 break; 1977 } 1978 if (fspath != path) 1979 free(path); 1980 1981 return (r); 1982 } 1983 } 1984 1985 if (fspath != path) 1986 free(path); 1987 1988 if (loud == TRUE) { 1989 pr_err(gettext("Could not use public filehandle in request to" 1990 " server %s\n"), fshost); 1991 } 1992 1993 return (r); 1994 } 1995 1996 /* 1997 * get fhandle of remote path from server's mountd 1998 */ 1999 static int 2000 get_fh(struct nfs_args *args, char *fshost, char *fspath, int *versp, 2001 bool_t loud_on_mnt_err, struct netconfig **nconfp, ushort_t port) 2002 { 2003 static struct fhstatus fhs; 2004 static struct mountres3 mountres3; 2005 static struct pathcnf p; 2006 nfs_fh3 *fh3p; 2007 struct timeval timeout = { 25, 0}; 2008 CLIENT *cl; 2009 enum clnt_stat rpc_stat; 2010 rpcvers_t outvers = 0; 2011 rpcvers_t vers_to_try; 2012 rpcvers_t vers_min; 2013 static int printed = 0; 2014 int count, i, *auths; 2015 char *msg; 2016 2017 switch (nfsvers) { 2018 case 2: /* version 2 specified try that only */ 2019 vers_to_try = MOUNTVERS_POSIX; 2020 vers_min = MOUNTVERS; 2021 break; 2022 case 3: /* version 3 specified try that only */ 2023 vers_to_try = MOUNTVERS3; 2024 vers_min = MOUNTVERS3; 2025 break; 2026 case 4: /* version 4 specified try that only */ 2027 /* 2028 * This assignment is in the wrong version sequence. 2029 * The above are MOUNT program and this is NFS 2030 * program. However, it happens to work out since the 2031 * two don't collide for NFSv4. 2032 */ 2033 vers_to_try = NFS_V4; 2034 vers_min = NFS_V4; 2035 break; 2036 default: /* no version specified, start with default */ 2037 /* 2038 * If the retry version is set, use that. This will 2039 * be set if the last mount attempt returned any other 2040 * besides an RPC error. 2041 */ 2042 if (nfsretry_vers) 2043 vers_to_try = nfsretry_vers; 2044 else { 2045 vers_to_try = vers_max_default; 2046 vers_min = vers_min_default; 2047 } 2048 2049 break; 2050 } 2051 2052 /* 2053 * In the case of version 4, just NULL proc the server since 2054 * there is no MOUNT program. If this fails, then decrease 2055 * vers_to_try and continue on with regular MOUNT program 2056 * processing. 2057 */ 2058 if (vers_to_try == NFS_V4) { 2059 int savevers = nfsvers_to_use; 2060 err_ret_t error; 2061 int retval; 2062 SET_ERR_RET(&error, ERR_PROTO_NONE, 0); 2063 2064 /* Let's hope for the best */ 2065 nfsvers_to_use = NFS_V4; 2066 retval = getaddr_nfs(args, fshost, nconfp, FALSE, 2067 fspath, port, &error, vers_min == NFS_V4); 2068 2069 if (retval == RET_OK) { 2070 *versp = nfsvers_to_use = NFS_V4; 2071 fstype = MNTTYPE_NFS4; 2072 args->fh = strdup(fspath); 2073 if (args->fh == NULL) { 2074 pr_err(gettext("no memory\n")); 2075 *versp = nfsvers_to_use = savevers; 2076 return (RET_ERR); 2077 } 2078 return (RET_OK); 2079 } 2080 nfsvers_to_use = savevers; 2081 2082 vers_to_try--; 2083 /* If no more versions to try, let the user know. */ 2084 if (vers_to_try < vers_min) 2085 return (retval); 2086 2087 /* 2088 * If we are here, there are more versions to try but 2089 * there has been an error of some sort. If it is not 2090 * an RPC error (e.g. host unknown), we just stop and 2091 * return the error since the other versions would see 2092 * the same error as well. 2093 */ 2094 if (retval == RET_ERR && error.error_type != ERR_RPCERROR) 2095 return (retval); 2096 } 2097 2098 while ((cl = clnt_create_vers(fshost, MOUNTPROG, &outvers, 2099 vers_min, vers_to_try, "datagram_v")) == NULL) { 2100 if (rpc_createerr.cf_stat == RPC_UNKNOWNHOST) { 2101 pr_err(gettext("%s: %s\n"), fshost, 2102 clnt_spcreateerror("")); 2103 return (RET_ERR); 2104 } 2105 2106 /* 2107 * We don't want to downgrade version on lost packets 2108 */ 2109 if ((rpc_createerr.cf_stat == RPC_TIMEDOUT) || 2110 (rpc_createerr.cf_stat == RPC_PMAPFAILURE)) { 2111 pr_err(gettext("%s: %s\n"), fshost, 2112 clnt_spcreateerror("")); 2113 return (RET_RETRY); 2114 } 2115 2116 /* 2117 * back off and try the previous version - patch to the 2118 * problem of version numbers not being contigous and 2119 * clnt_create_vers failing (SunOS4.1 clients & SGI servers) 2120 * The problem happens with most non-Sun servers who 2121 * don't support mountd protocol #2. So, in case the 2122 * call fails, we re-try the call anyway. 2123 */ 2124 vers_to_try--; 2125 if (vers_to_try < vers_min) { 2126 if (rpc_createerr.cf_stat == RPC_PROGVERSMISMATCH) { 2127 if (nfsvers == 0) { 2128 pr_err(gettext( 2129 "%s:%s: no applicable versions of NFS supported\n"), 2130 fshost, fspath); 2131 } else { 2132 pr_err(gettext( 2133 "%s:%s: NFS Version %d not supported\n"), 2134 fshost, fspath, nfsvers); 2135 } 2136 return (RET_ERR); 2137 } 2138 if (!printed) { 2139 pr_err(gettext("%s: %s\n"), fshost, 2140 clnt_spcreateerror("")); 2141 printed = 1; 2142 } 2143 return (RET_RETRY); 2144 } 2145 } 2146 if (posix && outvers < MOUNTVERS_POSIX) { 2147 pr_err(gettext("%s: %s: no pathconf info\n"), 2148 fshost, clnt_sperror(cl, "")); 2149 clnt_destroy(cl); 2150 return (RET_ERR); 2151 } 2152 2153 if (__clnt_bindresvport(cl) < 0) { 2154 pr_err(gettext("Couldn't bind to reserved port\n")); 2155 clnt_destroy(cl); 2156 return (RET_RETRY); 2157 } 2158 2159 if ((cl->cl_auth = authsys_create_default()) == NULL) { 2160 pr_err( 2161 gettext("Couldn't create default authentication handle\n")); 2162 clnt_destroy(cl); 2163 return (RET_RETRY); 2164 } 2165 2166 switch (outvers) { 2167 case MOUNTVERS: 2168 case MOUNTVERS_POSIX: 2169 *versp = nfsvers_to_use = NFS_VERSION; 2170 rpc_stat = clnt_call(cl, MOUNTPROC_MNT, xdr_dirpath, 2171 (caddr_t)&fspath, xdr_fhstatus, (caddr_t)&fhs, timeout); 2172 if (rpc_stat != RPC_SUCCESS) { 2173 pr_err(gettext("%s:%s: server not responding %s\n"), 2174 fshost, fspath, clnt_sperror(cl, "")); 2175 clnt_destroy(cl); 2176 return (RET_RETRY); 2177 } 2178 2179 if ((errno = fhs.fhs_status) != MNT_OK) { 2180 if (loud_on_mnt_err) { 2181 if (errno == EACCES) { 2182 pr_err(gettext( 2183 "%s:%s: access denied\n"), 2184 fshost, fspath); 2185 } else { 2186 pr_err(gettext("%s:%s: %s\n"), fshost, 2187 fspath, errno >= 0 ? 2188 strerror(errno) : "invalid error " 2189 "returned by server"); 2190 } 2191 } 2192 clnt_destroy(cl); 2193 return (RET_MNTERR); 2194 } 2195 args->fh = malloc(sizeof (fhs.fhstatus_u.fhs_fhandle)); 2196 if (args->fh == NULL) { 2197 pr_err(gettext("no memory\n")); 2198 return (RET_ERR); 2199 } 2200 memcpy((caddr_t)args->fh, (caddr_t)&fhs.fhstatus_u.fhs_fhandle, 2201 sizeof (fhs.fhstatus_u.fhs_fhandle)); 2202 if (!errno && posix) { 2203 rpc_stat = clnt_call(cl, MOUNTPROC_PATHCONF, 2204 xdr_dirpath, (caddr_t)&fspath, xdr_ppathcnf, 2205 (caddr_t)&p, timeout); 2206 if (rpc_stat != RPC_SUCCESS) { 2207 pr_err(gettext( 2208 "%s:%s: server not responding %s\n"), 2209 fshost, fspath, clnt_sperror(cl, "")); 2210 free(args->fh); 2211 clnt_destroy(cl); 2212 return (RET_RETRY); 2213 } 2214 if (_PC_ISSET(_PC_ERROR, p.pc_mask)) { 2215 pr_err(gettext( 2216 "%s:%s: no pathconf info\n"), 2217 fshost, fspath); 2218 free(args->fh); 2219 clnt_destroy(cl); 2220 return (RET_ERR); 2221 } 2222 args->flags |= NFSMNT_POSIX; 2223 args->pathconf = malloc(sizeof (p)); 2224 if (args->pathconf == NULL) { 2225 pr_err(gettext("no memory\n")); 2226 free(args->fh); 2227 clnt_destroy(cl); 2228 return (RET_ERR); 2229 } 2230 memcpy((caddr_t)args->pathconf, (caddr_t)&p, 2231 sizeof (p)); 2232 } 2233 break; 2234 2235 case MOUNTVERS3: 2236 *versp = nfsvers_to_use = NFS_V3; 2237 rpc_stat = clnt_call(cl, MOUNTPROC_MNT, xdr_dirpath, 2238 (caddr_t)&fspath, xdr_mountres3, (caddr_t)&mountres3, 2239 timeout); 2240 if (rpc_stat != RPC_SUCCESS) { 2241 pr_err(gettext("%s:%s: server not responding %s\n"), 2242 fshost, fspath, clnt_sperror(cl, "")); 2243 clnt_destroy(cl); 2244 return (RET_RETRY); 2245 } 2246 2247 /* 2248 * Assume here that most of the MNT3ERR_* 2249 * codes map into E* errors. 2250 */ 2251 if ((errno = mountres3.fhs_status) != MNT_OK) { 2252 if (loud_on_mnt_err) { 2253 switch (errno) { 2254 case MNT3ERR_NAMETOOLONG: 2255 msg = "path name is too long"; 2256 break; 2257 case MNT3ERR_NOTSUPP: 2258 msg = "operation not supported"; 2259 break; 2260 case MNT3ERR_SERVERFAULT: 2261 msg = "server fault"; 2262 break; 2263 default: 2264 if (errno >= 0) 2265 msg = strerror(errno); 2266 else 2267 msg = "invalid error returned " 2268 "by server"; 2269 break; 2270 } 2271 pr_err(gettext("%s:%s: %s\n"), fshost, 2272 fspath, msg); 2273 } 2274 clnt_destroy(cl); 2275 return (RET_MNTERR); 2276 } 2277 2278 fh3p = (nfs_fh3 *)malloc(sizeof (*fh3p)); 2279 if (fh3p == NULL) { 2280 pr_err(gettext("no memory\n")); 2281 return (RET_ERR); 2282 } 2283 fh3p->fh3_length = 2284 mountres3.mountres3_u.mountinfo.fhandle.fhandle3_len; 2285 (void) memcpy(fh3p->fh3_u.data, 2286 mountres3.mountres3_u.mountinfo.fhandle.fhandle3_val, 2287 fh3p->fh3_length); 2288 args->fh = (caddr_t)fh3p; 2289 fstype = MNTTYPE_NFS3; 2290 2291 /* 2292 * Check the security flavor to be used. 2293 * 2294 * If "secure" or "sec=flavor" is a mount 2295 * option, check if the server supports the "flavor". 2296 * If the server does not support the flavor, return 2297 * error. 2298 * 2299 * If no mount option is given then use the first supported 2300 * security flavor (by the client) in the auth list returned 2301 * from the server. 2302 * 2303 */ 2304 auths = 2305 mountres3.mountres3_u.mountinfo.auth_flavors 2306 .auth_flavors_val; 2307 count = 2308 mountres3.mountres3_u.mountinfo.auth_flavors 2309 .auth_flavors_len; 2310 2311 if (sec_opt) { 2312 for (i = 0; i < count; i++) { 2313 if (auths[i] == nfs_sec.sc_nfsnum) 2314 break; 2315 } 2316 if (i >= count) 2317 goto autherr; 2318 } else { 2319 if (count < 0) 2320 break; 2321 2322 for (i = 0; i < count; i++) { 2323 if (!nfs_getseconfig_bynumber(auths[i], 2324 &nfs_sec)) { 2325 sec_opt++; 2326 break; 2327 } 2328 } 2329 2330 if (i >= count) 2331 goto autherr; 2332 } 2333 break; 2334 default: 2335 pr_err(gettext("%s:%s: Unknown MOUNT version %d\n"), 2336 fshost, fspath, outvers); 2337 clnt_destroy(cl); 2338 return (RET_ERR); 2339 } 2340 2341 clnt_destroy(cl); 2342 return (RET_OK); 2343 2344 autherr: 2345 pr_err(gettext( 2346 "security mode does not match the server exporting %s:%s\n"), 2347 fshost, fspath); 2348 clnt_destroy(cl); 2349 return (RET_ERR); 2350 } 2351 2352 /* 2353 * Fill in the address for the server's NFS service and 2354 * fill in a knetconfig structure for the transport that 2355 * the service is available on. 2356 */ 2357 static int 2358 getaddr_nfs(struct nfs_args *args, char *fshost, struct netconfig **nconfp, 2359 bool_t get_pubfh, char *fspath, ushort_t port, err_ret_t *error, 2360 bool_t print_rpcerror) 2361 { 2362 struct stat sb; 2363 struct netconfig *nconf; 2364 struct knetconfig *knconfp; 2365 static int printed = 0; 2366 struct t_info tinfo; 2367 err_ret_t addr_error; 2368 2369 SET_ERR_RET(error, ERR_PROTO_NONE, 0); 2370 SET_ERR_RET(&addr_error, ERR_PROTO_NONE, 0); 2371 2372 if (nfs_proto) { 2373 /* 2374 * If a proto is specified and its rdma try this. The kernel 2375 * will later do the reachablity test and fail form there 2376 * if rdma transport is not available to kernel rpc 2377 */ 2378 if (strcmp(nfs_proto, "rdma") == 0) { 2379 args->addr = get_addr(fshost, NFS_PROGRAM, 2380 nfsvers_to_use, nconfp, NULL, port, &tinfo, 2381 &args->fh, get_pubfh, fspath, &addr_error); 2382 2383 args->flags |= NFSMNT_DORDMA; 2384 } else { 2385 args->addr = get_addr(fshost, NFS_PROGRAM, 2386 nfsvers_to_use, nconfp, nfs_proto, port, &tinfo, 2387 &args->fh, get_pubfh, fspath, &addr_error); 2388 } 2389 } else { 2390 args->addr = get_addr(fshost, NFS_PROGRAM, nfsvers_to_use, 2391 nconfp, nfs_proto, port, &tinfo, &args->fh, get_pubfh, 2392 fspath, &addr_error); 2393 /* 2394 * If no proto is specified set this flag. 2395 * Kernel mount code will try to use RDMA if its on the 2396 * system, otherwise it will keep on using the protocol 2397 * selected here, through the above get_addr call. 2398 */ 2399 if (nfs_proto == NULL) 2400 args->flags |= NFSMNT_TRYRDMA; 2401 } 2402 2403 if (args->addr == NULL) { 2404 /* 2405 * We could have failed because the server had no public 2406 * file handle support. So don't print a message and don't 2407 * retry. 2408 */ 2409 if (get_pubfh == TRUE) 2410 return (RET_ERR); 2411 2412 if (!printed) { 2413 switch (addr_error.error_type) { 2414 case 0: 2415 printed = 1; 2416 break; 2417 case ERR_RPCERROR: 2418 if (!print_rpcerror) 2419 /* no error print at this time */ 2420 break; 2421 pr_err(gettext("%s NFS service not" 2422 " available %s\n"), fshost, 2423 clnt_sperrno(addr_error.error_value)); 2424 printed = 1; 2425 break; 2426 case ERR_NETPATH: 2427 pr_err(gettext("%s: Error in NETPATH.\n"), 2428 fshost); 2429 printed = 1; 2430 break; 2431 case ERR_PROTO_INVALID: 2432 pr_err(gettext("%s: NFS service does not" 2433 " recognize protocol: %s.\n"), fshost, 2434 nfs_proto); 2435 printed = 1; 2436 break; 2437 case ERR_PROTO_UNSUPP: 2438 if (nfsvers || nfsvers_to_use == NFS_VERSMIN) { 2439 /* 2440 * Don't set "printed" here. Since we 2441 * have to keep checking here till we 2442 * exhaust transport errors on all vers. 2443 * 2444 * Print this message if: 2445 * 1. After we have tried all versions 2446 * of NFS and none support the asked 2447 * transport. 2448 * 2449 * 2. If a version is specified and it 2450 * does'nt support the asked 2451 * transport. 2452 * 2453 * Otherwise we decrement the version 2454 * and retry below. 2455 */ 2456 pr_err(gettext("%s: NFS service does" 2457 " not support protocol: %s.\n"), 2458 fshost, nfs_proto); 2459 } 2460 break; 2461 case ERR_NOHOST: 2462 pr_err("%s: %s\n", fshost, "Unknown host"); 2463 printed = 1; 2464 break; 2465 default: 2466 /* case ERR_PROTO_NONE falls through */ 2467 pr_err(gettext("%s: NFS service not responding" 2468 "\n"), fshost); 2469 printed = 1; 2470 break; 2471 } 2472 } 2473 SET_ERR_RET(error, 2474 addr_error.error_type, addr_error.error_value); 2475 if (addr_error.error_type == ERR_PROTO_NONE) 2476 return (RET_RETRY); 2477 else if (addr_error.error_type == ERR_RPCERROR && 2478 !IS_UNRECOVERABLE_RPC(addr_error.error_value)) { 2479 return (RET_RETRY); 2480 } else if (nfsvers == 0 && addr_error.error_type == 2481 ERR_PROTO_UNSUPP && nfsvers_to_use != NFS_VERSMIN) { 2482 /* 2483 * If no version is specified, and the error is due 2484 * to an unsupported transport, then decrement the 2485 * version and retry. 2486 */ 2487 return (RET_RETRY); 2488 } else 2489 return (RET_ERR); 2490 } 2491 nconf = *nconfp; 2492 2493 if (stat(nconf->nc_device, &sb) < 0) { 2494 pr_err(gettext("getaddr_nfs: couldn't stat: %s: %s\n"), 2495 nconf->nc_device, strerror(errno)); 2496 return (RET_ERR); 2497 } 2498 2499 knconfp = (struct knetconfig *)malloc(sizeof (*knconfp)); 2500 if (!knconfp) { 2501 pr_err(gettext("no memory\n")); 2502 return (RET_ERR); 2503 } 2504 knconfp->knc_semantics = nconf->nc_semantics; 2505 knconfp->knc_protofmly = nconf->nc_protofmly; 2506 knconfp->knc_proto = nconf->nc_proto; 2507 knconfp->knc_rdev = sb.st_rdev; 2508 2509 /* make sure we don't overload the transport */ 2510 if (tinfo.tsdu > 0 && tinfo.tsdu < NFS_MAXDATA + NFS_RPC_HDR) { 2511 args->flags |= (NFSMNT_RSIZE | NFSMNT_WSIZE); 2512 if (args->rsize == 0 || args->rsize > tinfo.tsdu - NFS_RPC_HDR) 2513 args->rsize = tinfo.tsdu - NFS_RPC_HDR; 2514 if (args->wsize == 0 || args->wsize > tinfo.tsdu - NFS_RPC_HDR) 2515 args->wsize = tinfo.tsdu - NFS_RPC_HDR; 2516 } 2517 2518 args->flags |= NFSMNT_KNCONF; 2519 args->knconf = knconfp; 2520 return (RET_OK); 2521 } 2522 2523 static int 2524 retry(struct mnttab *mntp, int ro) 2525 { 2526 int delay = 5; 2527 int count = retries; 2528 int r; 2529 2530 /* 2531 * Please see comments on nfsretry_vers in the beginning of this file 2532 * and in main() routine. 2533 */ 2534 2535 if (bg) { 2536 if (fork() > 0) 2537 return (RET_OK); 2538 backgrounded = 1; 2539 pr_err(gettext("backgrounding: %s\n"), mntp->mnt_mountp); 2540 } else { 2541 if (!nfsretry_vers) 2542 pr_err(gettext("retrying: %s\n"), mntp->mnt_mountp); 2543 } 2544 2545 while (count--) { 2546 if ((r = mount_nfs(mntp, ro, NULL)) == RET_OK) { 2547 pr_err(gettext("%s: mounted OK\n"), mntp->mnt_mountp); 2548 return (RET_OK); 2549 } 2550 if (r != RET_RETRY) 2551 break; 2552 2553 if (count > 0) { 2554 (void) sleep(delay); 2555 delay *= 2; 2556 if (delay > 120) 2557 delay = 120; 2558 } 2559 } 2560 2561 if (!nfsretry_vers) 2562 pr_err(gettext("giving up on: %s\n"), mntp->mnt_mountp); 2563 2564 return (RET_ERR); 2565 } 2566 2567 /* 2568 * Read the /etc/default/nfs configuration file to determine if the 2569 * client has been configured for a new min/max for the NFS version to 2570 * use. 2571 */ 2572 static void 2573 read_default(void) 2574 { 2575 char *defval; 2576 int errno; 2577 int tmp; 2578 2579 /* Fail silently if error in opening the default nfs config file */ 2580 if ((defopen(NFSADMIN)) == 0) { 2581 if ((defval = defread("NFS_CLIENT_VERSMIN=")) != NULL) { 2582 errno = 0; 2583 tmp = strtol(defval, (char **)NULL, 10); 2584 if (errno == 0) { 2585 vers_min_default = tmp; 2586 } 2587 } 2588 if ((defval = defread("NFS_CLIENT_VERSMAX=")) != NULL) { 2589 errno = 0; 2590 tmp = strtol(defval, (char **)NULL, 10); 2591 if (errno == 0) { 2592 vers_max_default = tmp; 2593 } 2594 } 2595 /* close defaults file */ 2596 defopen(NULL); 2597 } 2598 } 2599 2600 static void 2601 sigusr1(int s) 2602 { 2603 } 2604