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 (c) 1989, 2010, Oracle and/or its affiliates. All rights reserved. 24 */ 25 26 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 27 /* All Rights Reserved */ 28 29 /* 30 * University Copyright- Copyright (c) 1982, 1986, 1988 31 * The Regents of the University of California 32 * All Rights Reserved 33 * 34 * University Acknowledgment- Portions of this document are derived from 35 * software developed by the University of California, Berkeley, and its 36 * contributors. 37 */ 38 39 /* 40 * nfs mount 41 */ 42 43 #define NFSCLIENT 44 #include <locale.h> 45 #include <stdio.h> 46 #include <string.h> 47 #include <memory.h> 48 #include <stdarg.h> 49 #include <unistd.h> 50 #include <ctype.h> 51 #include <stdlib.h> 52 #include <signal.h> 53 #include <sys/param.h> 54 #include <rpc/rpc.h> 55 #include <errno.h> 56 #include <sys/stat.h> 57 #include <netdb.h> 58 #include <sys/mount.h> 59 #include <sys/mntent.h> 60 #include <sys/mnttab.h> 61 #include <nfs/nfs.h> 62 #include <nfs/mount.h> 63 #include <rpcsvc/mount.h> 64 #include <sys/pathconf.h> 65 #include <netdir.h> 66 #include <netconfig.h> 67 #include <sys/sockio.h> 68 #include <net/if.h> 69 #include <syslog.h> 70 #include <fslib.h> 71 #include <deflt.h> 72 #include <sys/wait.h> 73 #include "replica.h" 74 #include <netinet/in.h> 75 #include <nfs/nfs_sec.h> 76 #include <rpcsvc/daemon_utils.h> 77 #include <priv.h> 78 #include <tsol/label.h> 79 #include "nfs_subr.h" 80 #include "webnfs.h" 81 #include <rpcsvc/nfs4_prot.h> 82 #include <limits.h> 83 #include <libscf.h> 84 #include <libshare.h> 85 #include "smfcfg.h" 86 87 #include <nfs/nfssys.h> 88 extern int _nfssys(enum nfssys_op, void *); 89 90 #ifndef NFS_VERSMAX 91 #define NFS_VERSMAX 4 92 #endif 93 #ifndef NFS_VERSMIN 94 #define NFS_VERSMIN 2 95 #endif 96 97 #define RET_OK 0 98 #define RET_RETRY 32 99 #define RET_ERR 33 100 #define RET_MNTERR 1000 101 #define ERR_PROTO_NONE 0 102 #define ERR_PROTO_INVALID 901 103 #define ERR_PROTO_UNSUPP 902 104 #define ERR_NETPATH 903 105 #define ERR_NOHOST 904 106 #define ERR_RPCERROR 905 107 108 typedef struct err_ret { 109 int error_type; 110 int error_value; 111 } err_ret_t; 112 113 #define SET_ERR_RET(errst, etype, eval) \ 114 if (errst) { \ 115 (errst)->error_type = etype; \ 116 (errst)->error_value = eval; \ 117 } 118 119 /* number of transports to try */ 120 #define MNT_PREF_LISTLEN 2 121 #define FIRST_TRY 1 122 #define SECOND_TRY 2 123 124 #define BIGRETRY 10000 125 126 /* maximum length of RPC header for NFS messages */ 127 #define NFS_RPC_HDR 432 128 129 #define NFS_ARGS_EXTB_secdata(args, secdata) \ 130 { (args)->nfs_args_ext = NFS_ARGS_EXTB, \ 131 (args)->nfs_ext_u.nfs_extB.secdata = secdata; } 132 133 extern int __clnt_bindresvport(CLIENT *); 134 extern char *nfs_get_qop_name(); 135 extern AUTH * nfs_create_ah(); 136 extern enum snego_stat nfs_sec_nego(); 137 138 static void usage(void); 139 static int retry(struct mnttab *, int); 140 static int set_args(int *, struct nfs_args *, char *, struct mnttab *); 141 static int get_fh_via_pub(struct nfs_args *, char *, char *, bool_t, bool_t, 142 int *, struct netconfig **, ushort_t); 143 static int get_fh(struct nfs_args *, char *, char *, int *, bool_t, 144 struct netconfig **, ushort_t); 145 static int make_secure(struct nfs_args *, char *, struct netconfig *, 146 bool_t, rpcvers_t); 147 static int mount_nfs(struct mnttab *, int, err_ret_t *); 148 static int getaddr_nfs(struct nfs_args *, char *, struct netconfig **, 149 bool_t, char *, ushort_t, err_ret_t *, bool_t); 150 static void pr_err(const char *fmt, ...); 151 static void usage(void); 152 static struct netbuf *get_addr(char *, rpcprog_t, rpcvers_t, 153 struct netconfig **, char *, ushort_t, struct t_info *, 154 caddr_t *, bool_t, char *, err_ret_t *); 155 156 static struct netbuf *get_the_addr(char *, rpcprog_t, rpcvers_t, 157 struct netconfig *, ushort_t, struct t_info *, caddr_t *, 158 bool_t, char *, err_ret_t *); 159 160 extern int self_check(char *); 161 162 static void read_default(void); 163 164 static char typename[64]; 165 166 static int bg = 0; 167 static int backgrounded = 0; 168 static int posix = 0; 169 static int retries = BIGRETRY; 170 static ushort_t nfs_port = 0; 171 static char *nfs_proto = NULL; 172 173 static int mflg = 0; 174 static int Oflg = 0; /* Overlay mounts */ 175 static int qflg = 0; /* quiet - don't print warnings on bad options */ 176 177 static char *fstype = MNTTYPE_NFS; 178 179 static seconfig_t nfs_sec; 180 static int sec_opt = 0; /* any security option ? */ 181 static bool_t snego_done; 182 static void sigusr1(int); 183 184 extern void set_nfsv4_ephemeral_mount_to(void); 185 186 /* 187 * list of support services needed 188 */ 189 static char *service_list[] = { STATD, LOCKD, NULL }; 190 static char *service_list_v4[] = { STATD, LOCKD, NFS4CBD, NFSMAPID, NULL }; 191 192 /* 193 * These two variables control the NFS version number to be used. 194 * 195 * nfsvers defaults to 0 which means to use the highest number that 196 * both the client and the server support. It can also be set to 197 * a particular value, either 2, 3, or 4 to indicate the version 198 * number of choice. If the server (or the client) do not support 199 * the version indicated, then the mount attempt will be failed. 200 * 201 * nfsvers_to_use is the actual version number found to use. It 202 * is determined in get_fh by pinging the various versions of the 203 * NFS service on the server to see which responds positively. 204 * 205 * nfsretry_vers is the version number set when we retry the mount 206 * command with the version decremented from nfsvers_to_use. 207 * nfsretry_vers is set from nfsvers_to_use when we retry the mount 208 * for errors other than RPC errors; it helps un know why we are 209 * retrying. It is an indication that the retry is due to 210 * non-RPC errors. 211 */ 212 static rpcvers_t nfsvers = 0; 213 static rpcvers_t nfsvers_to_use = 0; 214 static rpcvers_t nfsretry_vers = 0; 215 216 /* 217 * There are the defaults (range) for the client when determining 218 * which NFS version to use when probing the server (see above). 219 * These will only be used when the vers mount option is not used and 220 * these may be reset if NFS SMF is configured to do so. 221 */ 222 static rpcvers_t vers_max_default = NFS_VERSMAX_DEFAULT; 223 static rpcvers_t vers_min_default = NFS_VERSMIN_DEFAULT; 224 225 /* 226 * This variable controls whether to try the public file handle. 227 */ 228 static bool_t public_opt; 229 230 int 231 main(int argc, char *argv[]) 232 { 233 struct mnttab mnt; 234 extern char *optarg; 235 extern int optind; 236 char optbuf[MAX_MNTOPT_STR]; 237 int ro = 0; 238 int r; 239 int c; 240 char *myname; 241 err_ret_t retry_error; 242 243 (void) setlocale(LC_ALL, ""); 244 #if !defined(TEXT_DOMAIN) 245 #define TEXT_DOMAIN "SYS_TEST" 246 #endif 247 (void) textdomain(TEXT_DOMAIN); 248 249 myname = strrchr(argv[0], '/'); 250 myname = myname ? myname + 1 : argv[0]; 251 (void) snprintf(typename, sizeof (typename), "%s %s", 252 MNTTYPE_NFS, myname); 253 argv[0] = typename; 254 255 mnt.mnt_mntopts = optbuf; 256 (void) strcpy(optbuf, "rw"); 257 258 /* 259 * Set options 260 */ 261 while ((c = getopt(argc, argv, "ro:mOq")) != EOF) { 262 switch (c) { 263 case 'r': 264 ro++; 265 break; 266 case 'o': 267 if (strlen(optarg) >= MAX_MNTOPT_STR) { 268 pr_err(gettext("option string too long")); 269 return (RET_ERR); 270 } 271 (void) strcpy(mnt.mnt_mntopts, optarg); 272 #ifdef LATER /* XXX */ 273 if (strstr(optarg, MNTOPT_REMOUNT)) { 274 /* 275 * If remount is specified, only rw is allowed. 276 */ 277 if ((strcmp(optarg, MNTOPT_REMOUNT) != 0) && 278 (strcmp(optarg, "remount,rw") != 0) && 279 (strcmp(optarg, "rw,remount") != 0)) { 280 pr_err(gettext("Invalid options\n")); 281 exit(RET_ERR); 282 } 283 } 284 #endif /* LATER */ /* XXX */ 285 break; 286 case 'm': 287 mflg++; 288 break; 289 case 'O': 290 Oflg++; 291 break; 292 case 'q': 293 qflg++; 294 break; 295 default: 296 usage(); 297 exit(RET_ERR); 298 } 299 } 300 if (argc - optind != 2) { 301 usage(); 302 exit(RET_ERR); 303 } 304 305 mnt.mnt_special = argv[optind]; 306 mnt.mnt_mountp = argv[optind+1]; 307 308 if (!priv_ineffect(PRIV_SYS_MOUNT) || 309 !priv_ineffect(PRIV_NET_PRIVADDR)) { 310 pr_err(gettext("insufficient privileges\n")); 311 exit(RET_ERR); 312 } 313 314 /* 315 * On a labeled system, allow read-down nfs mounts if privileged 316 * (PRIV_NET_MAC_AWARE) to do so. Otherwise, ignore the error 317 * and "mount equal label only" behavior will result. 318 */ 319 if (is_system_labeled()) 320 (void) setpflags(NET_MAC_AWARE, 1); 321 322 /* 323 * Read the NFS SMF defaults to see if the min/max versions have 324 * been set and therefore would override the encoded defaults. 325 * Then check to make sure that if they were set that the 326 * values are reasonable. 327 */ 328 read_default(); 329 if (vers_min_default > vers_max_default || 330 vers_min_default < NFS_VERSMIN || 331 vers_max_default > NFS_VERSMAX) { 332 pr_err("%s\n%s %s\n", 333 gettext("Incorrect configuration of client\'s"), 334 gettext("client_versmin or 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 static int 955 convert_int(int *val, char *str) 956 { 957 long lval; 958 959 if (str == NULL || !isdigit(*str)) 960 return (-1); 961 962 lval = strtol(str, &str, 10); 963 if (*str != '\0' || lval > INT_MAX) 964 return (-2); 965 966 *val = (int)lval; 967 return (0); 968 } 969 970 static int 971 set_args(int *mntflags, struct nfs_args *args, char *fshost, struct mnttab *mnt) 972 { 973 char *saveopt, *optstr, *opts, *newopts, *val; 974 int num; 975 int largefiles = 0; 976 int invalid = 0; 977 int attrpref = 0; 978 int optlen; 979 980 args->flags = NFSMNT_INT; /* default is "intr" */ 981 args->flags |= NFSMNT_HOSTNAME; 982 args->flags |= NFSMNT_NEWARGS; /* using extented nfs_args structure */ 983 args->hostname = fshost; 984 985 optstr = opts = strdup(mnt->mnt_mntopts); 986 /* sizeof (MNTOPT_XXX) includes one extra byte we may need for "," */ 987 optlen = strlen(mnt->mnt_mntopts) + sizeof (MNTOPT_XATTR) + 1; 988 if (optlen > MAX_MNTOPT_STR) { 989 pr_err(gettext("option string too long")); 990 return (RET_ERR); 991 } 992 newopts = malloc(optlen); 993 if (opts == NULL || newopts == NULL) { 994 pr_err(gettext("no memory")); 995 if (opts) 996 free(opts); 997 if (newopts) 998 free(newopts); 999 return (RET_ERR); 1000 } 1001 newopts[0] = '\0'; 1002 1003 while (*opts) { 1004 invalid = 0; 1005 saveopt = opts; 1006 switch (getsubopt(&opts, optlist, &val)) { 1007 case OPT_RO: 1008 *mntflags |= MS_RDONLY; 1009 break; 1010 case OPT_RW: 1011 *mntflags &= ~(MS_RDONLY); 1012 break; 1013 case OPT_QUOTA: 1014 case OPT_NOQUOTA: 1015 break; 1016 case OPT_SOFT: 1017 args->flags |= NFSMNT_SOFT; 1018 args->flags &= ~(NFSMNT_SEMISOFT); 1019 break; 1020 case OPT_SEMISOFT: 1021 args->flags |= NFSMNT_SOFT; 1022 args->flags |= NFSMNT_SEMISOFT; 1023 break; 1024 case OPT_HARD: 1025 args->flags &= ~(NFSMNT_SOFT); 1026 args->flags &= ~(NFSMNT_SEMISOFT); 1027 break; 1028 case OPT_SUID: 1029 *mntflags &= ~(MS_NOSUID); 1030 break; 1031 case OPT_NOSUID: 1032 *mntflags |= MS_NOSUID; 1033 break; 1034 case OPT_GRPID: 1035 args->flags |= NFSMNT_GRPID; 1036 break; 1037 case OPT_REMOUNT: 1038 *mntflags |= MS_REMOUNT; 1039 break; 1040 case OPT_INTR: 1041 args->flags |= NFSMNT_INT; 1042 break; 1043 case OPT_NOINTR: 1044 args->flags &= ~(NFSMNT_INT); 1045 break; 1046 case OPT_NOAC: 1047 args->flags |= NFSMNT_NOAC; 1048 break; 1049 case OPT_PORT: 1050 if (convert_int(&num, val) != 0) 1051 goto badopt; 1052 nfs_port = htons((ushort_t)num); 1053 break; 1054 1055 case OPT_SECURE: 1056 if (nfs_getseconfig_byname("dh", &nfs_sec)) { 1057 pr_err(gettext("can not get \"dh\" from %s\n"), 1058 NFSSEC_CONF); 1059 goto badopt; 1060 } 1061 sec_opt++; 1062 break; 1063 1064 case OPT_NOCTO: 1065 args->flags |= NFSMNT_NOCTO; 1066 break; 1067 1068 case OPT_RSIZE: 1069 if (convert_int(&args->rsize, val) != 0) 1070 goto badopt; 1071 args->flags |= NFSMNT_RSIZE; 1072 break; 1073 case OPT_WSIZE: 1074 if (convert_int(&args->wsize, val) != 0) 1075 goto badopt; 1076 args->flags |= NFSMNT_WSIZE; 1077 break; 1078 case OPT_TIMEO: 1079 if (convert_int(&args->timeo, val) != 0) 1080 goto badopt; 1081 args->flags |= NFSMNT_TIMEO; 1082 break; 1083 case OPT_RETRANS: 1084 if (convert_int(&args->retrans, val) != 0) 1085 goto badopt; 1086 args->flags |= NFSMNT_RETRANS; 1087 break; 1088 case OPT_ACTIMEO: 1089 if (convert_int(&args->acregmax, val) != 0) 1090 goto badopt; 1091 args->acdirmin = args->acregmin = args->acdirmax 1092 = args->acregmax; 1093 args->flags |= NFSMNT_ACDIRMAX; 1094 args->flags |= NFSMNT_ACREGMAX; 1095 args->flags |= NFSMNT_ACDIRMIN; 1096 args->flags |= NFSMNT_ACREGMIN; 1097 break; 1098 case OPT_ACREGMIN: 1099 if (convert_int(&args->acregmin, val) != 0) 1100 goto badopt; 1101 args->flags |= NFSMNT_ACREGMIN; 1102 break; 1103 case OPT_ACREGMAX: 1104 if (convert_int(&args->acregmax, val) != 0) 1105 goto badopt; 1106 args->flags |= NFSMNT_ACREGMAX; 1107 break; 1108 case OPT_ACDIRMIN: 1109 if (convert_int(&args->acdirmin, val) != 0) 1110 goto badopt; 1111 args->flags |= NFSMNT_ACDIRMIN; 1112 break; 1113 case OPT_ACDIRMAX: 1114 if (convert_int(&args->acdirmax, val) != 0) 1115 goto badopt; 1116 args->flags |= NFSMNT_ACDIRMAX; 1117 break; 1118 case OPT_BG: 1119 bg++; 1120 break; 1121 case OPT_FG: 1122 bg = 0; 1123 break; 1124 case OPT_RETRY: 1125 if (convert_int(&retries, val) != 0) 1126 goto badopt; 1127 break; 1128 case OPT_LLOCK: 1129 args->flags |= NFSMNT_LLOCK; 1130 break; 1131 case OPT_POSIX: 1132 posix = 1; 1133 break; 1134 case OPT_VERS: 1135 if (convert_int(&num, val) != 0) 1136 goto badopt; 1137 nfsvers = (rpcvers_t)num; 1138 break; 1139 case OPT_PROTO: 1140 if (val == NULL) 1141 goto badopt; 1142 1143 nfs_proto = (char *)malloc(strlen(val)+1); 1144 if (!nfs_proto) { 1145 pr_err(gettext("no memory")); 1146 return (RET_ERR); 1147 } 1148 1149 (void) strncpy(nfs_proto, val, strlen(val)+1); 1150 break; 1151 1152 case OPT_NOPRINT: 1153 args->flags |= NFSMNT_NOPRINT; 1154 break; 1155 1156 case OPT_LARGEFILES: 1157 largefiles = 1; 1158 break; 1159 1160 case OPT_NOLARGEFILES: 1161 pr_err(gettext("NFS can't support \"nolargefiles\"\n")); 1162 free(optstr); 1163 return (RET_ERR); 1164 1165 case OPT_SEC: 1166 if (val == NULL) { 1167 pr_err(gettext( 1168 "\"sec\" option requires argument\n")); 1169 return (RET_ERR); 1170 } 1171 if (nfs_getseconfig_byname(val, &nfs_sec)) { 1172 pr_err(gettext("can not get \"%s\" from %s\n"), 1173 val, NFSSEC_CONF); 1174 return (RET_ERR); 1175 } 1176 sec_opt++; 1177 break; 1178 1179 case OPT_PUBLIC: 1180 public_opt = TRUE; 1181 break; 1182 1183 case OPT_DIRECTIO: 1184 args->flags |= NFSMNT_DIRECTIO; 1185 break; 1186 1187 case OPT_NODIRECTIO: 1188 args->flags &= ~(NFSMNT_DIRECTIO); 1189 break; 1190 1191 case OPT_XATTR: 1192 case OPT_NOXATTR: 1193 /* 1194 * VFS options; just need to get them into the 1195 * new mount option string and note we've seen them 1196 */ 1197 attrpref = 1; 1198 break; 1199 default: 1200 /* 1201 * Note that this could be a valid OPT_* option so 1202 * we can't use "val" but need to use "saveopt". 1203 */ 1204 if (fsisstdopt(saveopt)) 1205 break; 1206 invalid = 1; 1207 if (!qflg) 1208 (void) fprintf(stderr, gettext( 1209 "mount: %s on %s - WARNING unknown option" 1210 " \"%s\"\n"), mnt->mnt_special, 1211 mnt->mnt_mountp, saveopt); 1212 break; 1213 } 1214 if (!invalid) { 1215 if (newopts[0]) 1216 strcat(newopts, ","); 1217 strcat(newopts, saveopt); 1218 } 1219 } 1220 /* Default is to turn extended attrs on */ 1221 if (!attrpref) { 1222 if (newopts[0]) 1223 strcat(newopts, ","); 1224 strcat(newopts, MNTOPT_XATTR); 1225 } 1226 strcpy(mnt->mnt_mntopts, newopts); 1227 free(newopts); 1228 free(optstr); 1229 1230 /* ensure that only one secure mode is requested */ 1231 if (sec_opt > 1) { 1232 pr_err(gettext("Security options conflict\n")); 1233 return (RET_ERR); 1234 } 1235 1236 /* ensure that the user isn't trying to get large files over V2 */ 1237 if (nfsvers == NFS_VERSION && largefiles) { 1238 pr_err(gettext("NFS V2 can't support \"largefiles\"\n")); 1239 return (RET_ERR); 1240 } 1241 1242 if (nfsvers == NFS_V4 && 1243 nfs_proto != NULL && 1244 strncasecmp(nfs_proto, NC_UDP, strlen(NC_UDP)) == 0) { 1245 pr_err(gettext("NFS V4 does not support %s\n"), nfs_proto); 1246 return (RET_ERR); 1247 } 1248 1249 return (RET_OK); 1250 1251 badopt: 1252 pr_err(gettext("invalid option: \"%s\"\n"), saveopt); 1253 free(optstr); 1254 return (RET_ERR); 1255 } 1256 1257 static int 1258 make_secure(struct nfs_args *args, char *hostname, struct netconfig *nconf, 1259 bool_t use_pubfh, rpcvers_t vers) 1260 { 1261 sec_data_t *secdata; 1262 int flags; 1263 struct netbuf *syncaddr = NULL; 1264 struct nd_addrlist *retaddrs = NULL; 1265 char netname[MAXNETNAMELEN+1]; 1266 1267 /* 1268 * check to see if any secure mode is requested. 1269 * if not, use default security mode. 1270 */ 1271 if (!snego_done && !sec_opt) { 1272 /* 1273 * Get default security mode. 1274 * AUTH_UNIX has been the default choice for a long time. 1275 * The better NFS security service becomes, the better chance 1276 * we will set stronger security service as the default NFS 1277 * security mode. 1278 */ 1279 if (nfs_getseconfig_default(&nfs_sec)) { 1280 pr_err(gettext("error getting default" 1281 " security entry\n")); 1282 return (-1); 1283 } 1284 args->flags |= NFSMNT_SECDEFAULT; 1285 } 1286 1287 /* 1288 * Get the network address for the time service on the server. 1289 * If an RPC based time service is not available then try the 1290 * IP time service. 1291 * 1292 * This is for AUTH_DH processing. We will also pass down syncaddr 1293 * and netname for NFS V4 even if AUTH_DH is not requested right now. 1294 * NFS V4 does security negotiation in the kernel via SECINFO. 1295 * These information might be needed later in the kernel. 1296 * 1297 * Eventurally, we want to move this code to nfs_clnt_secdata() 1298 * when autod_nfs.c and mount.c can share the same get_the_addr() 1299 * routine. 1300 */ 1301 flags = 0; 1302 syncaddr = NULL; 1303 1304 if (nfs_sec.sc_rpcnum == AUTH_DH || vers == NFS_V4) { 1305 /* 1306 * If using the public fh or nfsv4, we will not contact the 1307 * remote RPCBINDer, since it is possibly behind a firewall. 1308 */ 1309 if (use_pubfh == FALSE && vers != NFS_V4) 1310 syncaddr = get_the_addr(hostname, RPCBPROG, RPCBVERS, 1311 nconf, 0, NULL, NULL, FALSE, NULL, NULL); 1312 1313 if (syncaddr != NULL) { 1314 /* for flags in sec_data */ 1315 flags |= AUTH_F_RPCTIMESYNC; 1316 } else { 1317 struct nd_hostserv hs; 1318 int error; 1319 1320 hs.h_host = hostname; 1321 hs.h_serv = "timserver"; 1322 1323 error = netdir_getbyname(nconf, &hs, &retaddrs); 1324 1325 if (error != ND_OK && (nfs_sec.sc_rpcnum == AUTH_DH)) { 1326 pr_err(gettext("%s: secure: no time service\n"), 1327 hostname); 1328 return (-1); 1329 } 1330 1331 if (error == ND_OK) 1332 syncaddr = retaddrs->n_addrs; 1333 1334 /* 1335 * For NFS_V4 if AUTH_DH is negotiated later in the 1336 * kernel thru SECINFO, it will need syncaddr 1337 * and netname data. 1338 */ 1339 if (vers == NFS_V4 && syncaddr && 1340 host2netname(netname, hostname, NULL)) { 1341 args->syncaddr = malloc(sizeof (struct netbuf)); 1342 args->syncaddr->buf = malloc(syncaddr->len); 1343 (void) memcpy(args->syncaddr->buf, 1344 syncaddr->buf, syncaddr->len); 1345 args->syncaddr->len = syncaddr->len; 1346 args->syncaddr->maxlen = syncaddr->maxlen; 1347 args->netname = strdup(netname); 1348 args->flags |= NFSMNT_SECURE; 1349 } 1350 } 1351 } 1352 1353 /* 1354 * For the initial chosen flavor (any flavor defined in nfssec.conf), 1355 * the data will be stored in the sec_data structure via 1356 * nfs_clnt_secdata() and be passed to the kernel via nfs_args_* 1357 * extended data structure. 1358 */ 1359 if (!(secdata = nfs_clnt_secdata(&nfs_sec, hostname, args->knconf, 1360 syncaddr, flags))) { 1361 pr_err(gettext("errors constructing security related data\n")); 1362 if (flags & AUTH_F_RPCTIMESYNC) { 1363 free(syncaddr->buf); 1364 free(syncaddr); 1365 } else if (retaddrs) 1366 netdir_free((void *)retaddrs, ND_ADDRLIST); 1367 return (-1); 1368 } 1369 1370 NFS_ARGS_EXTB_secdata(args, secdata); 1371 if (flags & AUTH_F_RPCTIMESYNC) { 1372 free(syncaddr->buf); 1373 free(syncaddr); 1374 } else if (retaddrs) 1375 netdir_free((void *)retaddrs, ND_ADDRLIST); 1376 return (0); 1377 } 1378 1379 /* 1380 * Get the network address on "hostname" for program "prog" 1381 * with version "vers" by using the nconf configuration data 1382 * passed in. 1383 * 1384 * If the address of a netconfig pointer is null then 1385 * information is not sufficient and no netbuf will be returned. 1386 * 1387 * Finally, ping the null procedure of that service. 1388 * 1389 * A similar routine is also defined in ../../autofs/autod_nfs.c. 1390 * This is a potential routine to move to ../lib for common usage. 1391 */ 1392 static struct netbuf * 1393 get_the_addr(char *hostname, ulong_t prog, ulong_t vers, 1394 struct netconfig *nconf, ushort_t port, struct t_info *tinfo, 1395 caddr_t *fhp, bool_t get_pubfh, char *fspath, err_ret_t *error) 1396 { 1397 struct netbuf *nb = NULL; 1398 struct t_bind *tbind = NULL; 1399 CLIENT *cl = NULL; 1400 struct timeval tv; 1401 int fd = -1; 1402 AUTH *ah = NULL; 1403 AUTH *new_ah = NULL; 1404 struct snego_t snego; 1405 1406 if (nconf == NULL) 1407 return (NULL); 1408 1409 if ((fd = t_open(nconf->nc_device, O_RDWR, tinfo)) == -1) 1410 goto done; 1411 1412 /* LINTED pointer alignment */ 1413 if ((tbind = (struct t_bind *)t_alloc(fd, T_BIND, T_ADDR)) 1414 == NULL) 1415 goto done; 1416 1417 /* 1418 * In the case of public filehandle usage or NFSv4 we want to 1419 * avoid use of the rpcbind/portmap protocol 1420 */ 1421 if ((get_pubfh == TRUE) || (vers == NFS_V4)) { 1422 struct nd_hostserv hs; 1423 struct nd_addrlist *retaddrs; 1424 int retval; 1425 hs.h_host = hostname; 1426 1427 /* NFS where vers==4 does not support UDP */ 1428 if (vers == NFS_V4 && 1429 strncasecmp(nconf->nc_proto, NC_UDP, 1430 strlen(NC_UDP)) == 0) { 1431 SET_ERR_RET(error, ERR_PROTO_UNSUPP, 0); 1432 goto done; 1433 } 1434 1435 if (port == 0) 1436 hs.h_serv = "nfs"; 1437 else 1438 hs.h_serv = NULL; 1439 1440 if ((retval = netdir_getbyname(nconf, &hs, &retaddrs)) 1441 != ND_OK) { 1442 /* 1443 * Carefully set the error value here. Want to signify 1444 * that the error was an unknown host. 1445 */ 1446 if (retval == ND_NOHOST) { 1447 SET_ERR_RET(error, ERR_NOHOST, retval); 1448 } 1449 1450 goto done; 1451 } 1452 memcpy(tbind->addr.buf, retaddrs->n_addrs->buf, 1453 retaddrs->n_addrs->len); 1454 tbind->addr.len = retaddrs->n_addrs->len; 1455 netdir_free((void *)retaddrs, ND_ADDRLIST); 1456 (void) netdir_options(nconf, ND_SET_RESERVEDPORT, fd, NULL); 1457 1458 } else { 1459 if (rpcb_getaddr(prog, vers, nconf, &tbind->addr, 1460 hostname) == FALSE) { 1461 goto done; 1462 } 1463 } 1464 1465 if (port) { 1466 /* LINTED pointer alignment */ 1467 if (strcmp(nconf->nc_protofmly, NC_INET) == 0) 1468 ((struct sockaddr_in *)tbind->addr.buf)->sin_port 1469 = port; 1470 else if (strcmp(nconf->nc_protofmly, NC_INET6) == 0) 1471 ((struct sockaddr_in6 *)tbind->addr.buf)->sin6_port 1472 = port; 1473 1474 } 1475 1476 cl = clnt_tli_create(fd, nconf, &tbind->addr, prog, vers, 0, 0); 1477 if (cl == NULL) { 1478 /* 1479 * clnt_tli_create() returns either RPC_SYSTEMERROR, 1480 * RPC_UNKNOWNPROTO or RPC_TLIERROR. The RPC_TLIERROR translates 1481 * to "Misc. TLI error". This is not too helpful. Most likely 1482 * the connection to the remote server timed out, so this 1483 * error is at least less perplexing. 1484 * See: usr/src/cmd/rpcinfo/rpcinfo.c 1485 */ 1486 if (rpc_createerr.cf_stat == RPC_TLIERROR) { 1487 SET_ERR_RET(error, ERR_RPCERROR, RPC_PMAPFAILURE); 1488 } else { 1489 SET_ERR_RET(error, ERR_RPCERROR, rpc_createerr.cf_stat); 1490 } 1491 goto done; 1492 } 1493 1494 ah = authsys_create_default(); 1495 if (ah != NULL) 1496 cl->cl_auth = ah; 1497 1498 tv.tv_sec = 5; 1499 tv.tv_usec = 0; 1500 1501 (void) clnt_control(cl, CLSET_TIMEOUT, (char *)&tv); 1502 1503 if ((get_pubfh == TRUE) && (vers != NFS_V4)) { 1504 enum snego_stat sec; 1505 1506 if (!snego_done) { 1507 /* 1508 * negotiate sec flavor. 1509 */ 1510 snego.cnt = 0; 1511 if ((sec = nfs_sec_nego(vers, cl, fspath, &snego)) == 1512 SNEGO_SUCCESS) { 1513 int jj; 1514 1515 /* 1516 * check if server supports the one 1517 * specified in the sec= option. 1518 */ 1519 if (sec_opt) { 1520 for (jj = 0; jj < snego.cnt; jj++) { 1521 if (snego.array[jj] == 1522 nfs_sec.sc_nfsnum) { 1523 snego_done = TRUE; 1524 break; 1525 } 1526 } 1527 } 1528 1529 /* 1530 * find a common sec flavor 1531 */ 1532 if (!snego_done) { 1533 if (sec_opt) { 1534 pr_err(gettext( 1535 "Server does not support" 1536 " the security flavor" 1537 " specified.\n")); 1538 } 1539 1540 for (jj = 0; jj < snego.cnt; jj++) { 1541 if (!nfs_getseconfig_bynumber( 1542 snego.array[jj], 1543 &nfs_sec)) { 1544 snego_done = TRUE; 1545 #define EMSG80SUX "Security flavor %d was negotiated and will be used.\n" 1546 if (sec_opt) 1547 pr_err(gettext( 1548 EMSG80SUX), 1549 nfs_sec. 1550 sc_nfsnum); 1551 break; 1552 } 1553 } 1554 } 1555 1556 if (!snego_done) 1557 return (NULL); 1558 1559 /* 1560 * Now that the flavor has been 1561 * negotiated, get the fh. 1562 * 1563 * First, create an auth handle using the 1564 * negotiated sec flavor in the next lookup to 1565 * fetch the filehandle. 1566 */ 1567 new_ah = nfs_create_ah(cl, hostname, &nfs_sec); 1568 if (new_ah == NULL) 1569 goto done; 1570 cl->cl_auth = new_ah; 1571 } else if (sec == SNEGO_ARRAY_TOO_SMALL || sec == 1572 SNEGO_FAILURE) { 1573 goto done; 1574 } 1575 1576 /* 1577 * Note that if sec == SNEGO_DEF_VALID 1578 * default sec flavor is acceptable. 1579 * Use it to get the filehandle. 1580 */ 1581 } 1582 1583 if (vers == NFS_VERSION) { 1584 wnl_diropargs arg; 1585 wnl_diropres res; 1586 1587 memset((char *)&arg.dir, 0, sizeof (wnl_fh)); 1588 arg.name = fspath; 1589 memset((char *)&res, 0, sizeof (wnl_diropres)); 1590 if (wnlproc_lookup_2(&arg, &res, cl) != 1591 RPC_SUCCESS || res.status != WNL_OK) 1592 goto done; 1593 1594 *fhp = malloc(sizeof (wnl_fh)); 1595 1596 if (*fhp == NULL) { 1597 pr_err(gettext("no memory\n")); 1598 goto done; 1599 } 1600 1601 memcpy((char *)*fhp, 1602 (char *)&res.wnl_diropres_u.wnl_diropres.file, 1603 sizeof (wnl_fh)); 1604 } else { 1605 WNL_LOOKUP3args arg; 1606 WNL_LOOKUP3res res; 1607 nfs_fh3 *fh3p; 1608 1609 memset((char *)&arg.what.dir, 0, sizeof (wnl_fh3)); 1610 arg.what.name = fspath; 1611 memset((char *)&res, 0, sizeof (WNL_LOOKUP3res)); 1612 if (wnlproc3_lookup_3(&arg, &res, cl) != 1613 RPC_SUCCESS || res.status != WNL3_OK) 1614 goto done; 1615 1616 fh3p = (nfs_fh3 *)malloc(sizeof (*fh3p)); 1617 1618 if (fh3p == NULL) { 1619 pr_err(gettext("no memory\n")); 1620 goto done; 1621 } 1622 1623 fh3p->fh3_length = 1624 res.WNL_LOOKUP3res_u.res_ok.object.data.data_len; 1625 memcpy(fh3p->fh3_u.data, 1626 res.WNL_LOOKUP3res_u.res_ok.object.data.data_val, 1627 fh3p->fh3_length); 1628 1629 *fhp = (caddr_t)fh3p; 1630 } 1631 } else { 1632 struct rpc_err r_err; 1633 enum clnt_stat rc; 1634 1635 /* 1636 * NULL procedures need not have an argument or 1637 * result param. 1638 */ 1639 if (vers == NFS_VERSION) 1640 rc = wnlproc_null_2(NULL, NULL, cl); 1641 else if (vers == NFS_V3) 1642 rc = wnlproc3_null_3(NULL, NULL, cl); 1643 else 1644 rc = wnlproc4_null_4(NULL, NULL, cl); 1645 1646 if (rc != RPC_SUCCESS) { 1647 clnt_geterr(cl, &r_err); 1648 if (strcmp(nconf->nc_protofmly, NC_LOOPBACK) == 0) { 1649 switch (r_err.re_status) { 1650 case RPC_TLIERROR: 1651 case RPC_CANTRECV: 1652 case RPC_CANTSEND: 1653 r_err.re_status = RPC_PROGVERSMISMATCH; 1654 } 1655 } 1656 SET_ERR_RET(error, ERR_RPCERROR, r_err.re_status); 1657 goto done; 1658 } 1659 } 1660 1661 /* 1662 * Make a copy of the netbuf to return 1663 */ 1664 nb = (struct netbuf *)malloc(sizeof (*nb)); 1665 if (nb == NULL) { 1666 pr_err(gettext("no memory\n")); 1667 goto done; 1668 } 1669 *nb = tbind->addr; 1670 nb->buf = (char *)malloc(nb->maxlen); 1671 if (nb->buf == NULL) { 1672 pr_err(gettext("no memory\n")); 1673 free(nb); 1674 nb = NULL; 1675 goto done; 1676 } 1677 (void) memcpy(nb->buf, tbind->addr.buf, tbind->addr.len); 1678 1679 done: 1680 if (cl) { 1681 if (ah != NULL) { 1682 if (new_ah != NULL) 1683 AUTH_DESTROY(ah); 1684 AUTH_DESTROY(cl->cl_auth); 1685 cl->cl_auth = NULL; 1686 } 1687 clnt_destroy(cl); 1688 cl = NULL; 1689 } 1690 if (tbind) { 1691 t_free((char *)tbind, T_BIND); 1692 tbind = NULL; 1693 } 1694 if (fd >= 0) 1695 (void) t_close(fd); 1696 return (nb); 1697 } 1698 1699 static int 1700 check_nconf(struct netconfig *nconf, int nthtry, int *valid_proto) 1701 { 1702 int try_test = 0; 1703 int valid_family; 1704 char *proto = NULL; 1705 1706 1707 if (nthtry == FIRST_TRY) { 1708 try_test = ((nconf->nc_semantics == NC_TPI_COTS_ORD) || 1709 (nconf->nc_semantics == NC_TPI_COTS)); 1710 proto = NC_TCP; 1711 } else if (nthtry == SECOND_TRY) { 1712 try_test = (nconf->nc_semantics == NC_TPI_CLTS); 1713 proto = NC_UDP; 1714 } 1715 1716 if (proto && 1717 (strcmp(nconf->nc_protofmly, NC_INET) == 0 || 1718 strcmp(nconf->nc_protofmly, NC_INET6) == 0) && 1719 (strcmp(nconf->nc_proto, proto) == 0)) 1720 *valid_proto = TRUE; 1721 else 1722 *valid_proto = FALSE; 1723 1724 return (try_test); 1725 } 1726 1727 /* 1728 * Get a network address on "hostname" for program "prog" 1729 * with version "vers". If the port number is specified (non zero) 1730 * then try for a TCP/UDP transport and set the port number of the 1731 * resulting IP address. 1732 * 1733 * If the address of a netconfig pointer was passed and 1734 * if it's not null, use it as the netconfig otherwise 1735 * assign the address of the netconfig that was used to 1736 * establish contact with the service. 1737 * 1738 * A similar routine is also defined in ../../autofs/autod_nfs.c. 1739 * This is a potential routine to move to ../lib for common usage. 1740 * 1741 * "error" refers to a more descriptive term when get_addr fails 1742 * and returns NULL: ERR_PROTO_NONE if no error introduced by 1743 * -o proto option, ERR_NETPATH if error found in NETPATH 1744 * environment variable, ERR_PROTO_INVALID if an unrecognized 1745 * protocol is specified by user, and ERR_PROTO_UNSUPP for a 1746 * recognized but invalid protocol (eg. ticlts, ticots, etc.). 1747 * "error" is ignored if get_addr returns non-NULL result. 1748 * 1749 */ 1750 static struct netbuf * 1751 get_addr(char *hostname, ulong_t prog, ulong_t vers, struct netconfig **nconfp, 1752 char *proto, ushort_t port, struct t_info *tinfo, caddr_t *fhp, 1753 bool_t get_pubfh, char *fspath, err_ret_t *error) 1754 { 1755 struct netbuf *nb = NULL; 1756 struct netconfig *nconf = NULL; 1757 NCONF_HANDLE *nc = NULL; 1758 int nthtry = FIRST_TRY; 1759 err_ret_t errsave_nohost, errsave_rpcerr; 1760 1761 SET_ERR_RET(&errsave_nohost, ERR_PROTO_NONE, 0); 1762 SET_ERR_RET(&errsave_rpcerr, ERR_PROTO_NONE, 0); 1763 1764 SET_ERR_RET(error, ERR_PROTO_NONE, 0); 1765 1766 if (nconfp && *nconfp) 1767 return (get_the_addr(hostname, prog, vers, *nconfp, port, 1768 tinfo, fhp, get_pubfh, fspath, error)); 1769 /* 1770 * No nconf passed in. 1771 * 1772 * Try to get a nconf from /etc/netconfig filtered by 1773 * the NETPATH environment variable. 1774 * First search for COTS, second for CLTS unless proto 1775 * is specified. When we retry, we reset the 1776 * netconfig list so that we would search the whole list 1777 * all over again. 1778 */ 1779 1780 if ((nc = setnetpath()) == NULL) { 1781 /* should only return an error if problems with NETPATH */ 1782 /* In which case you are hosed */ 1783 SET_ERR_RET(error, ERR_NETPATH, 0); 1784 goto done; 1785 } 1786 1787 /* 1788 * If proto is specified, then only search for the match, 1789 * otherwise try COTS first, if failed, try CLTS. 1790 */ 1791 if (proto) { 1792 /* no matching proto name */ 1793 SET_ERR_RET(error, ERR_PROTO_INVALID, 0); 1794 1795 while (nconf = getnetpath(nc)) { 1796 if (strcmp(nconf->nc_netid, proto)) 1797 continue; 1798 1799 /* may be unsupported */ 1800 SET_ERR_RET(error, ERR_PROTO_UNSUPP, 0); 1801 1802 if ((port != 0) && 1803 ((strcmp(nconf->nc_protofmly, NC_INET) == 0 || 1804 strcmp(nconf->nc_protofmly, NC_INET6) == 0) && 1805 (strcmp(nconf->nc_proto, NC_TCP) != 0 && 1806 strcmp(nconf->nc_proto, NC_UDP) != 0))) { 1807 continue; 1808 } else { 1809 nb = get_the_addr(hostname, prog, 1810 vers, nconf, port, tinfo, 1811 fhp, get_pubfh, fspath, error); 1812 1813 if (nb != NULL) 1814 break; 1815 1816 /* nb is NULL - deal with errors */ 1817 if (error) { 1818 if (error->error_type == ERR_NOHOST) 1819 SET_ERR_RET(&errsave_nohost, 1820 error->error_type, 1821 error->error_value); 1822 if (error->error_type == ERR_RPCERROR) 1823 SET_ERR_RET(&errsave_rpcerr, 1824 error->error_type, 1825 error->error_value); 1826 } 1827 /* 1828 * continue with same protocol 1829 * selection 1830 */ 1831 continue; 1832 } 1833 } /* end of while */ 1834 1835 if (nconf == NULL) 1836 goto done; 1837 1838 if ((nb = get_the_addr(hostname, prog, vers, nconf, port, 1839 tinfo, fhp, get_pubfh, fspath, error)) == NULL) 1840 goto done; 1841 } else { 1842 retry: 1843 SET_ERR_RET(error, ERR_NETPATH, 0); 1844 while (nconf = getnetpath(nc)) { 1845 SET_ERR_RET(error, ERR_PROTO_NONE, 0); 1846 1847 if (nconf->nc_flag & NC_VISIBLE) { 1848 int valid_proto; 1849 1850 if (check_nconf(nconf, 1851 nthtry, &valid_proto)) { 1852 if (port == 0) 1853 break; 1854 1855 if (valid_proto == TRUE) 1856 break; 1857 } 1858 } 1859 } /* while */ 1860 if (nconf == NULL) { 1861 if (++nthtry <= MNT_PREF_LISTLEN) { 1862 endnetpath(nc); 1863 if ((nc = setnetpath()) == NULL) 1864 goto done; 1865 goto retry; 1866 } else 1867 goto done; 1868 } else { 1869 if ((nb = get_the_addr(hostname, prog, vers, nconf, 1870 port, tinfo, fhp, get_pubfh, fspath, error)) 1871 == NULL) { 1872 /* nb is NULL - deal with errors */ 1873 if (error) { 1874 if (error->error_type == ERR_NOHOST) 1875 SET_ERR_RET(&errsave_nohost, 1876 error->error_type, 1877 error->error_value); 1878 if (error->error_type == ERR_RPCERROR) 1879 SET_ERR_RET(&errsave_rpcerr, 1880 error->error_type, 1881 error->error_value); 1882 } 1883 /* 1884 * Continue the same search path in the 1885 * netconfig db until no more matched 1886 * nconf (nconf == NULL). 1887 */ 1888 goto retry; 1889 } 1890 } 1891 } 1892 SET_ERR_RET(error, ERR_PROTO_NONE, 0); 1893 1894 /* 1895 * Got nconf and nb. Now dup the netconfig structure (nconf) 1896 * and return it thru nconfp. 1897 */ 1898 *nconfp = getnetconfigent(nconf->nc_netid); 1899 if (*nconfp == NULL) { 1900 syslog(LOG_ERR, "no memory\n"); 1901 free(nb); 1902 nb = NULL; 1903 } 1904 done: 1905 if (nc) 1906 endnetpath(nc); 1907 1908 if (nb == NULL) { 1909 /* 1910 * Check the saved errors. The RPC error has * 1911 * precedence over the no host error. 1912 */ 1913 if (errsave_nohost.error_type != ERR_PROTO_NONE) 1914 SET_ERR_RET(error, errsave_nohost.error_type, 1915 errsave_nohost.error_value); 1916 1917 if (errsave_rpcerr.error_type != ERR_PROTO_NONE) 1918 SET_ERR_RET(error, errsave_rpcerr.error_type, 1919 errsave_rpcerr.error_value); 1920 } 1921 1922 return (nb); 1923 } 1924 1925 /* 1926 * Get a file handle usinging multi-component lookup with the public 1927 * file handle. 1928 */ 1929 static int 1930 get_fh_via_pub(struct nfs_args *args, char *fshost, char *fspath, bool_t url, 1931 bool_t loud, int *versp, struct netconfig **nconfp, ushort_t port) 1932 { 1933 uint_t vers_min; 1934 uint_t vers_max; 1935 int r; 1936 char *path; 1937 1938 if (nfsvers != 0) { 1939 vers_max = vers_min = nfsvers; 1940 } else { 1941 vers_max = vers_max_default; 1942 vers_min = vers_min_default; 1943 } 1944 1945 if (url == FALSE) { 1946 path = malloc(strlen(fspath) + 2); 1947 if (path == NULL) { 1948 if (loud == TRUE) 1949 pr_err(gettext("no memory\n")); 1950 return (RET_ERR); 1951 } 1952 1953 path[0] = (char)WNL_NATIVEPATH; 1954 (void) strcpy(&path[1], fspath); 1955 1956 } else { 1957 path = fspath; 1958 } 1959 1960 for (nfsvers_to_use = vers_max; nfsvers_to_use >= vers_min; 1961 nfsvers_to_use--) { 1962 /* 1963 * getaddr_nfs will also fill in the fh for us. 1964 */ 1965 r = getaddr_nfs(args, fshost, nconfp, 1966 TRUE, path, port, NULL, FALSE); 1967 1968 if (r == RET_OK) { 1969 /* 1970 * Since we are using the public fh, and NLM is 1971 * not firewall friendly, use local locking. 1972 * Not the case for v4. 1973 */ 1974 *versp = nfsvers_to_use; 1975 switch (nfsvers_to_use) { 1976 case NFS_V4: 1977 fstype = MNTTYPE_NFS4; 1978 break; 1979 case NFS_V3: 1980 fstype = MNTTYPE_NFS3; 1981 /* fall through to pick up llock option */ 1982 default: 1983 args->flags |= NFSMNT_LLOCK; 1984 break; 1985 } 1986 if (fspath != path) 1987 free(path); 1988 1989 return (r); 1990 } 1991 } 1992 1993 if (fspath != path) 1994 free(path); 1995 1996 if (loud == TRUE) { 1997 pr_err(gettext("Could not use public filehandle in request to" 1998 " server %s\n"), fshost); 1999 } 2000 2001 return (r); 2002 } 2003 2004 /* 2005 * get fhandle of remote path from server's mountd 2006 */ 2007 static int 2008 get_fh(struct nfs_args *args, char *fshost, char *fspath, int *versp, 2009 bool_t loud_on_mnt_err, struct netconfig **nconfp, ushort_t port) 2010 { 2011 static struct fhstatus fhs; 2012 static struct mountres3 mountres3; 2013 static struct pathcnf p; 2014 nfs_fh3 *fh3p; 2015 struct timeval timeout = { 25, 0}; 2016 CLIENT *cl; 2017 enum clnt_stat rpc_stat; 2018 rpcvers_t outvers = 0; 2019 rpcvers_t vers_to_try; 2020 rpcvers_t vers_min; 2021 static int printed = 0; 2022 int count, i, *auths; 2023 char *msg; 2024 2025 switch (nfsvers) { 2026 case 2: /* version 2 specified try that only */ 2027 vers_to_try = MOUNTVERS_POSIX; 2028 vers_min = MOUNTVERS; 2029 break; 2030 case 3: /* version 3 specified try that only */ 2031 vers_to_try = MOUNTVERS3; 2032 vers_min = MOUNTVERS3; 2033 break; 2034 case 4: /* version 4 specified try that only */ 2035 /* 2036 * This assignment is in the wrong version sequence. 2037 * The above are MOUNT program and this is NFS 2038 * program. However, it happens to work out since the 2039 * two don't collide for NFSv4. 2040 */ 2041 vers_to_try = NFS_V4; 2042 vers_min = NFS_V4; 2043 break; 2044 default: /* no version specified, start with default */ 2045 /* 2046 * If the retry version is set, use that. This will 2047 * be set if the last mount attempt returned any other 2048 * besides an RPC error. 2049 */ 2050 if (nfsretry_vers) 2051 vers_to_try = nfsretry_vers; 2052 else { 2053 vers_to_try = vers_max_default; 2054 vers_min = vers_min_default; 2055 } 2056 2057 break; 2058 } 2059 2060 /* 2061 * In the case of version 4, just NULL proc the server since 2062 * there is no MOUNT program. If this fails, then decrease 2063 * vers_to_try and continue on with regular MOUNT program 2064 * processing. 2065 */ 2066 if (vers_to_try == NFS_V4) { 2067 int savevers = nfsvers_to_use; 2068 err_ret_t error; 2069 int retval; 2070 SET_ERR_RET(&error, ERR_PROTO_NONE, 0); 2071 2072 /* Let's hope for the best */ 2073 nfsvers_to_use = NFS_V4; 2074 retval = getaddr_nfs(args, fshost, nconfp, FALSE, 2075 fspath, port, &error, vers_min == NFS_V4); 2076 2077 if (retval == RET_OK) { 2078 *versp = nfsvers_to_use = NFS_V4; 2079 fstype = MNTTYPE_NFS4; 2080 args->fh = strdup(fspath); 2081 if (args->fh == NULL) { 2082 pr_err(gettext("no memory\n")); 2083 *versp = nfsvers_to_use = savevers; 2084 return (RET_ERR); 2085 } 2086 return (RET_OK); 2087 } 2088 nfsvers_to_use = savevers; 2089 2090 vers_to_try--; 2091 /* If no more versions to try, let the user know. */ 2092 if (vers_to_try < vers_min) 2093 return (retval); 2094 2095 /* 2096 * If we are here, there are more versions to try but 2097 * there has been an error of some sort. If it is not 2098 * an RPC error (e.g. host unknown), we just stop and 2099 * return the error since the other versions would see 2100 * the same error as well. 2101 */ 2102 if (retval == RET_ERR && error.error_type != ERR_RPCERROR) 2103 return (retval); 2104 } 2105 2106 while ((cl = clnt_create_vers(fshost, MOUNTPROG, &outvers, 2107 vers_min, vers_to_try, "datagram_v")) == NULL) { 2108 if (rpc_createerr.cf_stat == RPC_UNKNOWNHOST) { 2109 pr_err(gettext("%s: %s\n"), fshost, 2110 clnt_spcreateerror("")); 2111 return (RET_ERR); 2112 } 2113 2114 /* 2115 * We don't want to downgrade version on lost packets 2116 */ 2117 if ((rpc_createerr.cf_stat == RPC_TIMEDOUT) || 2118 (rpc_createerr.cf_stat == RPC_PMAPFAILURE)) { 2119 pr_err(gettext("%s: %s\n"), fshost, 2120 clnt_spcreateerror("")); 2121 return (RET_RETRY); 2122 } 2123 2124 /* 2125 * back off and try the previous version - patch to the 2126 * problem of version numbers not being contigous and 2127 * clnt_create_vers failing (SunOS4.1 clients & SGI servers) 2128 * The problem happens with most non-Sun servers who 2129 * don't support mountd protocol #2. So, in case the 2130 * call fails, we re-try the call anyway. 2131 */ 2132 vers_to_try--; 2133 if (vers_to_try < vers_min) { 2134 if (rpc_createerr.cf_stat == RPC_PROGVERSMISMATCH) { 2135 if (nfsvers == 0) { 2136 pr_err(gettext( 2137 "%s:%s: no applicable versions of NFS supported\n"), 2138 fshost, fspath); 2139 } else { 2140 pr_err(gettext( 2141 "%s:%s: NFS Version %d not supported\n"), 2142 fshost, fspath, nfsvers); 2143 } 2144 return (RET_ERR); 2145 } 2146 if (!printed) { 2147 pr_err(gettext("%s: %s\n"), fshost, 2148 clnt_spcreateerror("")); 2149 printed = 1; 2150 } 2151 return (RET_RETRY); 2152 } 2153 } 2154 if (posix && outvers < MOUNTVERS_POSIX) { 2155 pr_err(gettext("%s: %s: no pathconf info\n"), 2156 fshost, clnt_sperror(cl, "")); 2157 clnt_destroy(cl); 2158 return (RET_ERR); 2159 } 2160 2161 if (__clnt_bindresvport(cl) < 0) { 2162 pr_err(gettext("Couldn't bind to reserved port\n")); 2163 clnt_destroy(cl); 2164 return (RET_RETRY); 2165 } 2166 2167 if ((cl->cl_auth = authsys_create_default()) == NULL) { 2168 pr_err( 2169 gettext("Couldn't create default authentication handle\n")); 2170 clnt_destroy(cl); 2171 return (RET_RETRY); 2172 } 2173 2174 switch (outvers) { 2175 case MOUNTVERS: 2176 case MOUNTVERS_POSIX: 2177 *versp = nfsvers_to_use = NFS_VERSION; 2178 rpc_stat = clnt_call(cl, MOUNTPROC_MNT, xdr_dirpath, 2179 (caddr_t)&fspath, xdr_fhstatus, (caddr_t)&fhs, timeout); 2180 if (rpc_stat != RPC_SUCCESS) { 2181 pr_err(gettext("%s:%s: server not responding %s\n"), 2182 fshost, fspath, clnt_sperror(cl, "")); 2183 clnt_destroy(cl); 2184 return (RET_RETRY); 2185 } 2186 2187 if ((errno = fhs.fhs_status) != MNT_OK) { 2188 if (loud_on_mnt_err) { 2189 if (errno == EACCES) { 2190 pr_err(gettext( 2191 "%s:%s: access denied\n"), 2192 fshost, fspath); 2193 } else { 2194 pr_err(gettext("%s:%s: %s\n"), fshost, 2195 fspath, errno >= 0 ? 2196 strerror(errno) : "invalid error " 2197 "returned by server"); 2198 } 2199 } 2200 clnt_destroy(cl); 2201 return (RET_MNTERR); 2202 } 2203 args->fh = malloc(sizeof (fhs.fhstatus_u.fhs_fhandle)); 2204 if (args->fh == NULL) { 2205 pr_err(gettext("no memory\n")); 2206 return (RET_ERR); 2207 } 2208 memcpy((caddr_t)args->fh, (caddr_t)&fhs.fhstatus_u.fhs_fhandle, 2209 sizeof (fhs.fhstatus_u.fhs_fhandle)); 2210 if (!errno && posix) { 2211 rpc_stat = clnt_call(cl, MOUNTPROC_PATHCONF, 2212 xdr_dirpath, (caddr_t)&fspath, xdr_ppathcnf, 2213 (caddr_t)&p, timeout); 2214 if (rpc_stat != RPC_SUCCESS) { 2215 pr_err(gettext( 2216 "%s:%s: server not responding %s\n"), 2217 fshost, fspath, clnt_sperror(cl, "")); 2218 free(args->fh); 2219 clnt_destroy(cl); 2220 return (RET_RETRY); 2221 } 2222 if (_PC_ISSET(_PC_ERROR, p.pc_mask)) { 2223 pr_err(gettext( 2224 "%s:%s: no pathconf info\n"), 2225 fshost, fspath); 2226 free(args->fh); 2227 clnt_destroy(cl); 2228 return (RET_ERR); 2229 } 2230 args->flags |= NFSMNT_POSIX; 2231 args->pathconf = malloc(sizeof (p)); 2232 if (args->pathconf == NULL) { 2233 pr_err(gettext("no memory\n")); 2234 free(args->fh); 2235 clnt_destroy(cl); 2236 return (RET_ERR); 2237 } 2238 memcpy((caddr_t)args->pathconf, (caddr_t)&p, 2239 sizeof (p)); 2240 } 2241 break; 2242 2243 case MOUNTVERS3: 2244 *versp = nfsvers_to_use = NFS_V3; 2245 rpc_stat = clnt_call(cl, MOUNTPROC_MNT, xdr_dirpath, 2246 (caddr_t)&fspath, xdr_mountres3, (caddr_t)&mountres3, 2247 timeout); 2248 if (rpc_stat != RPC_SUCCESS) { 2249 pr_err(gettext("%s:%s: server not responding %s\n"), 2250 fshost, fspath, clnt_sperror(cl, "")); 2251 clnt_destroy(cl); 2252 return (RET_RETRY); 2253 } 2254 2255 /* 2256 * Assume here that most of the MNT3ERR_* 2257 * codes map into E* errors. 2258 */ 2259 if ((errno = mountres3.fhs_status) != MNT_OK) { 2260 if (loud_on_mnt_err) { 2261 switch (errno) { 2262 case MNT3ERR_NAMETOOLONG: 2263 msg = "path name is too long"; 2264 break; 2265 case MNT3ERR_NOTSUPP: 2266 msg = "operation not supported"; 2267 break; 2268 case MNT3ERR_SERVERFAULT: 2269 msg = "server fault"; 2270 break; 2271 default: 2272 if (errno >= 0) 2273 msg = strerror(errno); 2274 else 2275 msg = "invalid error returned " 2276 "by server"; 2277 break; 2278 } 2279 pr_err(gettext("%s:%s: %s\n"), fshost, 2280 fspath, msg); 2281 } 2282 clnt_destroy(cl); 2283 return (RET_MNTERR); 2284 } 2285 2286 fh3p = (nfs_fh3 *)malloc(sizeof (*fh3p)); 2287 if (fh3p == NULL) { 2288 pr_err(gettext("no memory\n")); 2289 return (RET_ERR); 2290 } 2291 fh3p->fh3_length = 2292 mountres3.mountres3_u.mountinfo.fhandle.fhandle3_len; 2293 (void) memcpy(fh3p->fh3_u.data, 2294 mountres3.mountres3_u.mountinfo.fhandle.fhandle3_val, 2295 fh3p->fh3_length); 2296 args->fh = (caddr_t)fh3p; 2297 fstype = MNTTYPE_NFS3; 2298 2299 /* 2300 * Check the security flavor to be used. 2301 * 2302 * If "secure" or "sec=flavor" is a mount 2303 * option, check if the server supports the "flavor". 2304 * If the server does not support the flavor, return 2305 * error. 2306 * 2307 * If no mount option is given then look for default auth 2308 * (default auth entry in /etc/nfssec.conf) in the auth list 2309 * returned from server. If default auth not found, then use 2310 * the first supported security flavor (by the client) in the 2311 * auth list returned from the server. 2312 * 2313 */ 2314 auths = 2315 mountres3.mountres3_u.mountinfo.auth_flavors 2316 .auth_flavors_val; 2317 count = 2318 mountres3.mountres3_u.mountinfo.auth_flavors 2319 .auth_flavors_len; 2320 2321 if (count <= 0) { 2322 pr_err(gettext( 2323 "server %s did not return any security mode\n"), 2324 fshost); 2325 clnt_destroy(cl); 2326 return (RET_ERR); 2327 } 2328 2329 if (sec_opt) { 2330 for (i = 0; i < count; i++) { 2331 if (auths[i] == nfs_sec.sc_nfsnum) 2332 break; 2333 } 2334 if (i == count) 2335 goto autherr; 2336 } else { 2337 seconfig_t default_sec; 2338 2339 /* 2340 * Get client configured default auth. 2341 */ 2342 nfs_sec.sc_nfsnum = -1; 2343 default_sec.sc_nfsnum = -1; 2344 (void) nfs_getseconfig_default(&default_sec); 2345 2346 /* 2347 * Look for clients default auth in servers list. 2348 */ 2349 if (default_sec.sc_nfsnum != -1) { 2350 for (i = 0; i < count; i++) { 2351 if (auths[i] == default_sec.sc_nfsnum) { 2352 sec_opt++; 2353 nfs_sec = default_sec; 2354 break; 2355 } 2356 } 2357 } 2358 2359 /* 2360 * Could not find clients default auth in servers list. 2361 * Pick the first auth from servers list that is 2362 * also supported on the client. 2363 */ 2364 if (nfs_sec.sc_nfsnum == -1) { 2365 for (i = 0; i < count; i++) { 2366 if (!nfs_getseconfig_bynumber(auths[i], 2367 &nfs_sec)) { 2368 sec_opt++; 2369 break; 2370 2371 } 2372 } 2373 } 2374 2375 if (i == count) 2376 goto autherr; 2377 } 2378 break; 2379 default: 2380 pr_err(gettext("%s:%s: Unknown MOUNT version %d\n"), 2381 fshost, fspath, outvers); 2382 clnt_destroy(cl); 2383 return (RET_ERR); 2384 } 2385 2386 clnt_destroy(cl); 2387 return (RET_OK); 2388 2389 autherr: 2390 pr_err(gettext( 2391 "security mode does not match the server exporting %s:%s\n"), 2392 fshost, fspath); 2393 clnt_destroy(cl); 2394 return (RET_ERR); 2395 } 2396 2397 /* 2398 * Fill in the address for the server's NFS service and 2399 * fill in a knetconfig structure for the transport that 2400 * the service is available on. 2401 */ 2402 static int 2403 getaddr_nfs(struct nfs_args *args, char *fshost, struct netconfig **nconfp, 2404 bool_t get_pubfh, char *fspath, ushort_t port, err_ret_t *error, 2405 bool_t print_rpcerror) 2406 { 2407 struct stat sb; 2408 struct netconfig *nconf; 2409 struct knetconfig *knconfp; 2410 static int printed = 0; 2411 struct t_info tinfo; 2412 err_ret_t addr_error; 2413 2414 SET_ERR_RET(error, ERR_PROTO_NONE, 0); 2415 SET_ERR_RET(&addr_error, ERR_PROTO_NONE, 0); 2416 2417 if (nfs_proto) { 2418 /* 2419 * If a proto is specified and its rdma try this. The kernel 2420 * will later do the reachablity test and fail form there 2421 * if rdma transport is not available to kernel rpc 2422 */ 2423 if (strcmp(nfs_proto, "rdma") == 0) { 2424 args->addr = get_addr(fshost, NFS_PROGRAM, 2425 nfsvers_to_use, nconfp, NULL, port, &tinfo, 2426 &args->fh, get_pubfh, fspath, &addr_error); 2427 2428 args->flags |= NFSMNT_DORDMA; 2429 } else { 2430 args->addr = get_addr(fshost, NFS_PROGRAM, 2431 nfsvers_to_use, nconfp, nfs_proto, port, &tinfo, 2432 &args->fh, get_pubfh, fspath, &addr_error); 2433 } 2434 } else { 2435 args->addr = get_addr(fshost, NFS_PROGRAM, nfsvers_to_use, 2436 nconfp, nfs_proto, port, &tinfo, &args->fh, get_pubfh, 2437 fspath, &addr_error); 2438 /* 2439 * If no proto is specified set this flag. 2440 * Kernel mount code will try to use RDMA if its on the 2441 * system, otherwise it will keep on using the protocol 2442 * selected here, through the above get_addr call. 2443 */ 2444 if (nfs_proto == NULL) 2445 args->flags |= NFSMNT_TRYRDMA; 2446 } 2447 2448 if (args->addr == NULL) { 2449 /* 2450 * We could have failed because the server had no public 2451 * file handle support. So don't print a message and don't 2452 * retry. 2453 */ 2454 if (get_pubfh == TRUE) 2455 return (RET_ERR); 2456 2457 if (!printed) { 2458 switch (addr_error.error_type) { 2459 case 0: 2460 printed = 1; 2461 break; 2462 case ERR_RPCERROR: 2463 if (!print_rpcerror) 2464 /* no error print at this time */ 2465 break; 2466 pr_err(gettext("%s NFS service not" 2467 " available %s\n"), fshost, 2468 clnt_sperrno(addr_error.error_value)); 2469 printed = 1; 2470 break; 2471 case ERR_NETPATH: 2472 pr_err(gettext("%s: Error in NETPATH.\n"), 2473 fshost); 2474 printed = 1; 2475 break; 2476 case ERR_PROTO_INVALID: 2477 pr_err(gettext("%s: NFS service does not" 2478 " recognize protocol: %s.\n"), fshost, 2479 nfs_proto); 2480 printed = 1; 2481 break; 2482 case ERR_PROTO_UNSUPP: 2483 if (nfsvers || nfsvers_to_use == NFS_VERSMIN) { 2484 /* 2485 * Don't set "printed" here. Since we 2486 * have to keep checking here till we 2487 * exhaust transport errors on all vers. 2488 * 2489 * Print this message if: 2490 * 1. After we have tried all versions 2491 * of NFS and none support the asked 2492 * transport. 2493 * 2494 * 2. If a version is specified and it 2495 * does'nt support the asked 2496 * transport. 2497 * 2498 * Otherwise we decrement the version 2499 * and retry below. 2500 */ 2501 pr_err(gettext("%s: NFS service does" 2502 " not support protocol: %s.\n"), 2503 fshost, nfs_proto); 2504 } 2505 break; 2506 case ERR_NOHOST: 2507 pr_err("%s: %s\n", fshost, "Unknown host"); 2508 printed = 1; 2509 break; 2510 default: 2511 /* case ERR_PROTO_NONE falls through */ 2512 pr_err(gettext("%s: NFS service not responding" 2513 "\n"), fshost); 2514 printed = 1; 2515 break; 2516 } 2517 } 2518 SET_ERR_RET(error, 2519 addr_error.error_type, addr_error.error_value); 2520 if (addr_error.error_type == ERR_PROTO_NONE) 2521 return (RET_RETRY); 2522 else if (addr_error.error_type == ERR_RPCERROR && 2523 !IS_UNRECOVERABLE_RPC(addr_error.error_value)) { 2524 return (RET_RETRY); 2525 } else if (nfsvers == 0 && addr_error.error_type == 2526 ERR_PROTO_UNSUPP && nfsvers_to_use != NFS_VERSMIN) { 2527 /* 2528 * If no version is specified, and the error is due 2529 * to an unsupported transport, then decrement the 2530 * version and retry. 2531 */ 2532 return (RET_RETRY); 2533 } else 2534 return (RET_ERR); 2535 } 2536 nconf = *nconfp; 2537 2538 if (stat(nconf->nc_device, &sb) < 0) { 2539 pr_err(gettext("getaddr_nfs: couldn't stat: %s: %s\n"), 2540 nconf->nc_device, strerror(errno)); 2541 return (RET_ERR); 2542 } 2543 2544 knconfp = (struct knetconfig *)malloc(sizeof (*knconfp)); 2545 if (!knconfp) { 2546 pr_err(gettext("no memory\n")); 2547 return (RET_ERR); 2548 } 2549 knconfp->knc_semantics = nconf->nc_semantics; 2550 knconfp->knc_protofmly = nconf->nc_protofmly; 2551 knconfp->knc_proto = nconf->nc_proto; 2552 knconfp->knc_rdev = sb.st_rdev; 2553 2554 /* make sure we don't overload the transport */ 2555 if (tinfo.tsdu > 0 && tinfo.tsdu < NFS_MAXDATA + NFS_RPC_HDR) { 2556 args->flags |= (NFSMNT_RSIZE | NFSMNT_WSIZE); 2557 if (args->rsize == 0 || args->rsize > tinfo.tsdu - NFS_RPC_HDR) 2558 args->rsize = tinfo.tsdu - NFS_RPC_HDR; 2559 if (args->wsize == 0 || args->wsize > tinfo.tsdu - NFS_RPC_HDR) 2560 args->wsize = tinfo.tsdu - NFS_RPC_HDR; 2561 } 2562 2563 args->flags |= NFSMNT_KNCONF; 2564 args->knconf = knconfp; 2565 return (RET_OK); 2566 } 2567 2568 static int 2569 retry(struct mnttab *mntp, int ro) 2570 { 2571 int delay = 5; 2572 int count = retries; 2573 int r; 2574 2575 /* 2576 * Please see comments on nfsretry_vers in the beginning of this file 2577 * and in main() routine. 2578 */ 2579 2580 if (bg) { 2581 if (fork() > 0) 2582 return (RET_OK); 2583 backgrounded = 1; 2584 pr_err(gettext("backgrounding: %s\n"), mntp->mnt_mountp); 2585 } else { 2586 if (!nfsretry_vers) 2587 pr_err(gettext("retrying: %s\n"), mntp->mnt_mountp); 2588 } 2589 2590 while (count--) { 2591 if ((r = mount_nfs(mntp, ro, NULL)) == RET_OK) { 2592 pr_err(gettext("%s: mounted OK\n"), mntp->mnt_mountp); 2593 return (RET_OK); 2594 } 2595 if (r != RET_RETRY) 2596 break; 2597 2598 if (count > 0) { 2599 (void) sleep(delay); 2600 delay *= 2; 2601 if (delay > 120) 2602 delay = 120; 2603 } 2604 } 2605 2606 if (!nfsretry_vers) 2607 pr_err(gettext("giving up on: %s\n"), mntp->mnt_mountp); 2608 2609 return (RET_ERR); 2610 } 2611 2612 /* 2613 * Read the NFS SMF Parameters to determine if the 2614 * client has been configured for a new min/max for the NFS version to 2615 * use. 2616 */ 2617 static void 2618 read_default(void) 2619 { 2620 char value[4]; 2621 int errno; 2622 int tmp = 0, bufsz = 0, ret = 0; 2623 2624 /* Maximum number of bytes expected. */ 2625 bufsz = 4; 2626 ret = nfs_smf_get_prop("client_versmin", value, DEFAULT_INSTANCE, 2627 SCF_TYPE_INTEGER, SVC_NFS_CLIENT, &bufsz); 2628 if (ret == SA_OK) { 2629 errno = 0; 2630 tmp = strtol(value, (char **)NULL, 10); 2631 if (errno == 0) { 2632 vers_min_default = tmp; 2633 } 2634 } 2635 2636 /* Maximum number of bytes expected. */ 2637 bufsz = 4; 2638 ret = nfs_smf_get_prop("client_versmax", value, DEFAULT_INSTANCE, 2639 SCF_TYPE_INTEGER, SVC_NFS_CLIENT, &bufsz); 2640 if (ret == SA_OK) { 2641 errno = 0; 2642 tmp = strtol(value, (char **)NULL, 10); 2643 if (errno == 0) { 2644 vers_max_default = tmp; 2645 } 2646 } 2647 } 2648 2649 static void 2650 sigusr1(int s) 2651 { 2652 } 2653