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 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #pragma ident "%Z%%M% %I% %E% SMI" 27 28 #include <stdio.h> 29 #include <unistd.h> 30 #include <stdlib.h> 31 #include <ctype.h> 32 #include <syslog.h> 33 #include <string.h> 34 #include <deflt.h> 35 #include <kstat.h> 36 #include <sys/param.h> 37 #include <sys/types.h> 38 #include <sys/time.h> 39 #include <sys/stat.h> 40 #include <sys/wait.h> 41 #include <sys/socket.h> 42 #include <netinet/in.h> 43 #include <signal.h> 44 #include <sys/signal.h> 45 #include <rpc/rpc.h> 46 #include <rpc/pmap_clnt.h> 47 #include <sys/mount.h> 48 #include <sys/mntent.h> 49 #include <sys/mnttab.h> 50 #include <sys/fstyp.h> 51 #include <sys/fsid.h> 52 #include <arpa/inet.h> 53 #include <netdb.h> 54 #include <netconfig.h> 55 #include <netdir.h> 56 #include <errno.h> 57 #define NFSCLIENT 58 #include <nfs/nfs.h> 59 #include <nfs/mount.h> 60 #include <rpcsvc/mount.h> 61 #include <rpc/nettype.h> 62 #include <locale.h> 63 #include <setjmp.h> 64 #include <sys/socket.h> 65 #include <thread.h> 66 #include <limits.h> 67 #include <nss_dbdefs.h> /* for NSS_BUFLEN_HOSTS */ 68 #include <nfs/nfs_sec.h> 69 #include <sys/sockio.h> 70 #include <net/if.h> 71 #include <assert.h> 72 #include <nfs/nfs_clnt.h> 73 #include <rpcsvc/nfs4_prot.h> 74 #define NO_RDDIR_CACHE 75 #include "automount.h" 76 #include "replica.h" 77 #include "nfs_subr.h" 78 #include "webnfs.h" 79 #include <sys/sockio.h> 80 #include <net/if.h> 81 #include <assert.h> 82 #include <rpcsvc/daemon_utils.h> 83 #include <pwd.h> 84 #include <strings.h> 85 #include <tsol/label.h> 86 #include <zone.h> 87 88 extern char *nfs_get_qop_name(); 89 extern AUTH *nfs_create_ah(); 90 extern enum snego_stat nfs_sec_nego(); 91 92 #define MAXHOSTS 512 93 94 /* number of transports to try */ 95 #define MNT_PREF_LISTLEN 2 96 #define FIRST_TRY 1 97 #define SECOND_TRY 2 98 99 #define MNTTYPE_CACHEFS "cachefs" 100 101 /* 102 * host cache states 103 */ 104 #define NOHOST 0 105 #define GOODHOST 1 106 #define DEADHOST 2 107 108 #define NFS_ARGS_EXTB_secdata(args, secdata) \ 109 { (args).nfs_args_ext = NFS_ARGS_EXTB, \ 110 (args).nfs_ext_u.nfs_extB.secdata = secdata; } 111 112 struct cache_entry { 113 struct cache_entry *cache_next; 114 char *cache_host; 115 time_t cache_time; 116 int cache_state; 117 rpcvers_t cache_reqvers; 118 rpcvers_t cache_outvers; 119 char *cache_proto; 120 }; 121 122 struct mfs_snego_t { 123 int sec_opt; 124 bool_t snego_done; 125 char *nfs_flavor; 126 seconfig_t nfs_sec; 127 }; 128 typedef struct mfs_snego_t mfs_snego_t; 129 130 static struct cache_entry *cache_head = NULL; 131 rwlock_t cache_lock; /* protect the cache chain */ 132 133 static enum nfsstat nfsmount(struct mapfs *, char *, char *, int, int, uid_t, 134 action_list *); 135 static int is_nfs_port(char *); 136 137 void netbuf_free(struct netbuf *); 138 struct knetconfig *get_knconf(struct netconfig *); 139 void free_knconf(struct knetconfig *); 140 static int get_pathconf(CLIENT *, char *, char *, struct pathcnf **, int); 141 static struct mapfs *enum_servers(struct mapent *, char *); 142 static struct mapfs *get_mysubnet_servers(struct mapfs *); 143 static int subnet_test(int af, struct sioc_addrreq *); 144 static struct netbuf *get_addr(char *, rpcprog_t, rpcvers_t, 145 struct netconfig **, char *, ushort_t, struct t_info *); 146 147 static struct netbuf *get_pubfh(char *, rpcvers_t, mfs_snego_t *, 148 struct netconfig **, char *, ushort_t, struct t_info *, caddr_t *, 149 bool_t, char *); 150 151 static int create_homedir(const char *, const char *); 152 153 enum type_of_stuff { 154 SERVER_ADDR = 0, 155 SERVER_PING = 1, 156 SERVER_FH = 2 157 }; 158 159 void *get_server_stuff(enum type_of_stuff, char *, rpcprog_t, 160 rpcvers_t, mfs_snego_t *, struct netconfig **, char *, ushort_t, 161 struct t_info *, caddr_t *, bool_t, char *, enum clnt_stat *); 162 163 void *get_the_stuff(enum type_of_stuff, char *, rpcprog_t, 164 rpcvers_t, mfs_snego_t *, struct netconfig *, ushort_t, struct t_info *, 165 caddr_t *, bool_t, char *, enum clnt_stat *); 166 167 struct mapfs *add_mfs(struct mapfs *, int, struct mapfs **, struct mapfs **); 168 void free_mfs(struct mapfs *); 169 static void dump_mfs(struct mapfs *, char *, int); 170 static char *dump_distance(struct mapfs *); 171 static void cache_free(struct cache_entry *); 172 static int cache_check(char *, rpcvers_t *, char *); 173 static void cache_enter(char *, rpcvers_t, rpcvers_t, char *, int); 174 void destroy_auth_client_handle(CLIENT *cl); 175 176 #ifdef CACHE_DEBUG 177 static void trace_host_cache(); 178 static void trace_portmap_cache(); 179 #endif /* CACHE_DEBUG */ 180 181 static int rpc_timeout = 20; 182 183 #ifdef CACHE_DEBUG 184 /* 185 * host cache counters. These variables do not need to be protected 186 * by mutex's. They have been added to measure the utility of the 187 * goodhost/deadhost cache in the lazy hierarchical mounting scheme. 188 */ 189 static int host_cache_accesses = 0; 190 static int host_cache_lookups = 0; 191 static int deadhost_cache_hits = 0; 192 static int goodhost_cache_hits = 0; 193 194 /* 195 * portmap cache counters. These variables do not need to be protected 196 * by mutex's. They have been added to measure the utility of the portmap 197 * cache in the lazy hierarchical mounting scheme. 198 */ 199 static int portmap_cache_accesses = 0; 200 static int portmap_cache_lookups = 0; 201 static int portmap_cache_hits = 0; 202 #endif /* CACHE_DEBUG */ 203 204 /* 205 * There are the defaults (range) for the client when determining 206 * which NFS version to use when probing the server (see above). 207 * These will only be used when the vers mount option is not used and 208 * these may be reset if /etc/default/nfs is configured to do so. 209 */ 210 static rpcvers_t vers_max_default = NFS_VERSMAX_DEFAULT; 211 static rpcvers_t vers_min_default = NFS_VERSMIN_DEFAULT; 212 213 /* 214 * list of support services needed 215 */ 216 static char *service_list[] = { STATD, LOCKD, NULL }; 217 static char *service_list_v4[] = { STATD, LOCKD, NFS4CBD, NFSMAPID, NULL }; 218 219 static void read_default_nfs(void); 220 static int is_v4_mount(char *); 221 static void start_nfs4cbd(void); 222 223 int 224 mount_nfs( 225 struct mapent *me, 226 char *mntpnt, 227 char *prevhost, 228 int overlay, 229 uid_t uid, 230 action_list **alpp) 231 { 232 struct mapfs *mfs, *mp; 233 int err = -1; 234 int cached; 235 action_list *alp; 236 237 238 alp = *alpp; 239 240 read_default_nfs(); 241 242 mfs = enum_servers(me, prevhost); 243 if (mfs == NULL) 244 return (ENOENT); 245 246 /* 247 * Try loopback if we have something on localhost; if nothing 248 * works, we will fall back to NFS 249 */ 250 if (is_nfs_port(me->map_mntopts)) { 251 for (mp = mfs; mp; mp = mp->mfs_next) { 252 if (self_check(mp->mfs_host)) { 253 err = loopbackmount(mp->mfs_dir, 254 mntpnt, me->map_mntopts, overlay); 255 if (err) { 256 mp->mfs_ignore = 1; 257 } else { 258 /* 259 * Free action_list if there 260 * is one as it is not needed. 261 * Make sure to set alpp to null 262 * so caller doesn't try to free it 263 * again. 264 */ 265 if (*alpp) { 266 free(*alpp); 267 *alpp = NULL; 268 } 269 break; 270 } 271 } 272 } 273 } 274 if (err) { 275 cached = strcmp(me->map_mounter, MNTTYPE_CACHEFS) == 0; 276 err = nfsmount(mfs, mntpnt, me->map_mntopts, 277 cached, overlay, uid, alp); 278 if (err && trace > 1) { 279 trace_prt(1, " Couldn't mount %s:%s, err=%d\n", 280 mfs->mfs_host, mfs->mfs_dir, err); 281 } 282 } 283 free_mfs(mfs); 284 return (err); 285 } 286 287 288 /* 289 * Using the new ioctl SIOCTONLINK to determine if a host is on the same 290 * subnet. Remove the old network, subnet check. 291 */ 292 293 static struct mapfs * 294 get_mysubnet_servers(struct mapfs *mfs_in) 295 { 296 int s; 297 struct mapfs *mfs, *p, *mfs_head = NULL, *mfs_tail = NULL; 298 299 struct netconfig *nconf; 300 NCONF_HANDLE *nc = NULL; 301 struct nd_hostserv hs; 302 struct nd_addrlist *retaddrs; 303 struct netbuf *nb; 304 struct sioc_addrreq areq; 305 int res; 306 int af; 307 int i; 308 int sa_size; 309 310 hs.h_serv = "rpcbind"; 311 312 for (mfs = mfs_in; mfs; mfs = mfs->mfs_next) { 313 nc = setnetconfig(); 314 315 while (nconf = getnetconfig(nc)) { 316 317 /* 318 * Care about INET family only. proto_done flag 319 * indicates if we have already covered this 320 * protocol family. If so skip it 321 */ 322 if (((strcmp(nconf->nc_protofmly, NC_INET6) == 0) || 323 (strcmp(nconf->nc_protofmly, NC_INET) == 0)) && 324 (nconf->nc_semantics == NC_TPI_CLTS)) { 325 } else 326 continue; 327 328 hs.h_host = mfs->mfs_host; 329 330 if (netdir_getbyname(nconf, &hs, &retaddrs) != ND_OK) 331 continue; 332 333 /* 334 * For each host address see if it's on our 335 * local subnet. 336 */ 337 338 if (strcmp(nconf->nc_protofmly, NC_INET6) == 0) 339 af = AF_INET6; 340 else 341 af = AF_INET; 342 nb = retaddrs->n_addrs; 343 for (i = 0; i < retaddrs->n_cnt; i++, nb++) { 344 memset(&areq.sa_addr, 0, sizeof (areq.sa_addr)); 345 memcpy(&areq.sa_addr, nb->buf, MIN(nb->len, 346 sizeof (areq.sa_addr))); 347 if (res = subnet_test(af, &areq)) { 348 p = add_mfs(mfs, DIST_MYNET, 349 &mfs_head, &mfs_tail); 350 if (!p) { 351 netdir_free(retaddrs, 352 ND_ADDRLIST); 353 endnetconfig(nc); 354 return (NULL); 355 } 356 break; 357 } 358 } /* end of every host */ 359 if (trace > 2) { 360 trace_prt(1, "get_mysubnet_servers: host=%s " 361 "netid=%s res=%s\n", mfs->mfs_host, 362 nconf->nc_netid, res == 1?"SUC":"FAIL"); 363 } 364 365 netdir_free(retaddrs, ND_ADDRLIST); 366 } /* end of while */ 367 368 endnetconfig(nc); 369 370 } /* end of every map */ 371 372 return (mfs_head); 373 374 } 375 376 int 377 subnet_test(int af, struct sioc_addrreq *areq) 378 { 379 int s; 380 381 if ((s = socket(af, SOCK_DGRAM, 0)) < 0) { 382 return (0); 383 } 384 385 areq->sa_res = -1; 386 387 if (ioctl(s, SIOCTONLINK, (caddr_t)areq) < 0) { 388 syslog(LOG_ERR, "subnet_test:SIOCTONLINK failed"); 389 return (0); 390 } 391 close(s); 392 if (areq->sa_res == 1) 393 return (1); 394 else 395 return (0); 396 397 398 } 399 400 /* 401 * ping a bunch of hosts at once and sort by who responds first 402 */ 403 static struct mapfs * 404 sort_servers(struct mapfs *mfs_in, int timeout) 405 { 406 struct mapfs *m1 = NULL; 407 enum clnt_stat clnt_stat; 408 409 if (!mfs_in) 410 return (NULL); 411 412 clnt_stat = nfs_cast(mfs_in, &m1, timeout); 413 414 if (!m1) { 415 char buff[2048] = {'\0'}; 416 417 for (m1 = mfs_in; m1; m1 = m1->mfs_next) { 418 (void) strcat(buff, m1->mfs_host); 419 if (m1->mfs_next) 420 (void) strcat(buff, ","); 421 } 422 423 syslog(LOG_ERR, "servers %s not responding: %s", 424 buff, clnt_sperrno(clnt_stat)); 425 } 426 427 return (m1); 428 } 429 430 /* 431 * Add a mapfs entry to the list described by *mfs_head and *mfs_tail, 432 * provided it is not marked "ignored" and isn't a dupe of ones we've 433 * already seen. 434 */ 435 struct mapfs * 436 add_mfs(struct mapfs *mfs, int distance, struct mapfs **mfs_head, 437 struct mapfs **mfs_tail) 438 { 439 struct mapfs *tmp, *new; 440 441 for (tmp = *mfs_head; tmp; tmp = tmp->mfs_next) 442 if ((strcmp(tmp->mfs_host, mfs->mfs_host) == 0 && 443 strcmp(tmp->mfs_dir, mfs->mfs_dir) == 0) || 444 mfs->mfs_ignore) 445 return (*mfs_head); 446 new = (struct mapfs *)malloc(sizeof (struct mapfs)); 447 if (!new) { 448 syslog(LOG_ERR, "Memory allocation failed: %m"); 449 return (NULL); 450 } 451 bcopy(mfs, new, sizeof (struct mapfs)); 452 new->mfs_next = NULL; 453 if (distance) 454 new->mfs_distance = distance; 455 if (!*mfs_head) 456 *mfs_tail = *mfs_head = new; 457 else { 458 (*mfs_tail)->mfs_next = new; 459 *mfs_tail = new; 460 } 461 return (*mfs_head); 462 } 463 464 static void 465 dump_mfs(struct mapfs *mfs, char *message, int level) 466 { 467 struct mapfs *m1; 468 469 if (trace <= level) 470 return; 471 472 trace_prt(1, "%s", message); 473 if (!mfs) { 474 trace_prt(0, "mfs is null\n"); 475 return; 476 } 477 for (m1 = mfs; m1; m1 = m1->mfs_next) 478 trace_prt(0, "%s[%s] ", m1->mfs_host, dump_distance(m1)); 479 trace_prt(0, "\n"); 480 } 481 482 static char * 483 dump_distance(struct mapfs *mfs) 484 { 485 switch (mfs->mfs_distance) { 486 case 0: return ("zero"); 487 case DIST_SELF: return ("self"); 488 case DIST_MYSUB: return ("mysub"); 489 case DIST_MYNET: return ("mynet"); 490 case DIST_OTHER: return ("other"); 491 default: return ("other"); 492 } 493 } 494 495 /* 496 * Walk linked list "raw", building a new list consisting of members 497 * NOT found in list "filter", returning the result. 498 */ 499 static struct mapfs * 500 filter_mfs(struct mapfs *raw, struct mapfs *filter) 501 { 502 struct mapfs *mfs, *p, *mfs_head = NULL, *mfs_tail = NULL; 503 int skip; 504 505 if (!raw) 506 return (NULL); 507 for (mfs = raw; mfs; mfs = mfs->mfs_next) { 508 for (skip = 0, p = filter; p; p = p->mfs_next) { 509 if (strcmp(p->mfs_host, mfs->mfs_host) == 0 && 510 strcmp(p->mfs_dir, mfs->mfs_dir) == 0) { 511 skip = 1; 512 break; 513 } 514 } 515 if (skip) 516 continue; 517 p = add_mfs(mfs, 0, &mfs_head, &mfs_tail); 518 if (!p) 519 return (NULL); 520 } 521 return (mfs_head); 522 } 523 524 /* 525 * Walk a linked list of mapfs structs, freeing each member. 526 */ 527 void 528 free_mfs(struct mapfs *mfs) 529 { 530 struct mapfs *tmp; 531 532 while (mfs) { 533 tmp = mfs->mfs_next; 534 free(mfs); 535 mfs = tmp; 536 } 537 } 538 539 /* 540 * New code for NFS client failover: we need to carry and sort 541 * lists of server possibilities rather than return a single 542 * entry. It preserves previous behaviour of sorting first by 543 * locality (loopback-or-preferred/subnet/net/other) and then 544 * by ping times. We'll short-circuit this process when we 545 * have ENOUGH or more entries. 546 */ 547 static struct mapfs * 548 enum_servers(struct mapent *me, char *preferred) 549 { 550 struct mapfs *p, *m1, *m2, *mfs_head = NULL, *mfs_tail = NULL; 551 552 /* 553 * Short-circuit for simple cases. 554 */ 555 if (!me->map_fs->mfs_next) { 556 p = add_mfs(me->map_fs, DIST_OTHER, &mfs_head, &mfs_tail); 557 if (!p) 558 return (NULL); 559 return (mfs_head); 560 } 561 562 dump_mfs(me->map_fs, " enum_servers: mapent: ", 2); 563 564 /* 565 * get addresses & see if any are myself 566 * or were mounted from previously in a 567 * hierarchical mount. 568 */ 569 if (trace > 2) 570 trace_prt(1, " enum_servers: looking for pref/self\n"); 571 for (m1 = me->map_fs; m1; m1 = m1->mfs_next) { 572 if (m1->mfs_ignore) 573 continue; 574 if (self_check(m1->mfs_host) || 575 strcmp(m1->mfs_host, preferred) == 0) { 576 p = add_mfs(m1, DIST_SELF, &mfs_head, &mfs_tail); 577 if (!p) 578 return (NULL); 579 } 580 } 581 if (trace > 2 && m1) 582 trace_prt(1, " enum_servers: pref/self found, %s\n", 583 m1->mfs_host); 584 585 /* 586 * look for entries on this subnet 587 */ 588 dump_mfs(m1, " enum_servers: input of get_mysubnet_servers: ", 2); 589 m1 = get_mysubnet_servers(me->map_fs); 590 dump_mfs(m1, " enum_servers: output of get_mysubnet_servers: ", 3); 591 if (m1 && m1->mfs_next) { 592 m2 = sort_servers(m1, rpc_timeout / 2); 593 dump_mfs(m2, " enum_servers: output of sort_servers: ", 3); 594 free_mfs(m1); 595 m1 = m2; 596 } 597 598 for (m2 = m1; m2; m2 = m2->mfs_next) { 599 p = add_mfs(m2, 0, &mfs_head, &mfs_tail); 600 if (!p) 601 return (NULL); 602 } 603 if (m1) 604 free_mfs(m1); 605 606 /* 607 * add the rest of the entries at the end 608 */ 609 m1 = filter_mfs(me->map_fs, mfs_head); 610 dump_mfs(m1, " enum_servers: etc: output of filter_mfs: ", 3); 611 m2 = sort_servers(m1, rpc_timeout / 2); 612 dump_mfs(m2, " enum_servers: etc: output of sort_servers: ", 3); 613 if (m1) 614 free_mfs(m1); 615 m1 = m2; 616 for (m2 = m1; m2; m2 = m2->mfs_next) { 617 p = add_mfs(m2, DIST_OTHER, &mfs_head, &mfs_tail); 618 if (!p) 619 return (NULL); 620 } 621 if (m1) 622 free_mfs(m1); 623 624 done: 625 dump_mfs(mfs_head, " enum_servers: output: ", 1); 626 return (mfs_head); 627 } 628 629 static enum nfsstat 630 nfsmount( 631 struct mapfs *mfs_in, 632 char *mntpnt, char *opts, 633 int cached, int overlay, 634 uid_t uid, 635 action_list *alp) 636 { 637 CLIENT *cl; 638 char remname[MAXPATHLEN], *mnttabtext = NULL; 639 char mopts[MAX_MNTOPT_STR]; 640 char netname[MAXNETNAMELEN+1]; 641 char *mntopts = NULL; 642 int mnttabcnt = 0; 643 int loglevel; 644 struct mnttab m; 645 struct nfs_args *argp = NULL, *head = NULL, *tail = NULL, 646 *prevhead, *prevtail; 647 int flags; 648 struct fhstatus fhs; 649 struct timeval timeout; 650 enum clnt_stat rpc_stat; 651 enum nfsstat status; 652 struct stat stbuf; 653 struct netconfig *nconf; 654 rpcvers_t vers, versmin; /* used to negotiate nfs version in pingnfs */ 655 /* and mount version with mountd */ 656 rpcvers_t outvers; /* final version to be used during mount() */ 657 rpcvers_t nfsvers; /* version in map options, 0 if not there */ 658 rpcvers_t mountversmax; /* tracks the max mountvers during retries */ 659 660 /* used to negotiate nfs version using webnfs */ 661 rpcvers_t pubvers, pubversmin, pubversmax; 662 int posix; 663 struct nd_addrlist *retaddrs; 664 struct mountres3 res3; 665 nfs_fh3 fh3; 666 char *fstype; 667 int count, i; 668 char scerror_msg[MAXMSGLEN]; 669 int *auths; 670 int delay; 671 int retries; 672 char *nfs_proto = NULL; 673 uint_t nfs_port = 0; 674 char *p, *host, *dir; 675 struct mapfs *mfs = NULL; 676 int error, last_error = 0; 677 int replicated; 678 int entries = 0; 679 int v2cnt = 0, v3cnt = 0, v4cnt = 0; 680 int v2near = 0, v3near = 0, v4near = 0; 681 int skipentry = 0; 682 char *nfs_flavor; 683 seconfig_t nfs_sec; 684 int sec_opt, scerror; 685 struct sec_data *secdata; 686 int secflags; 687 struct netbuf *syncaddr; 688 bool_t use_pubfh; 689 ushort_t thisport; 690 int got_val; 691 mfs_snego_t mfssnego_init, mfssnego; 692 693 dump_mfs(mfs_in, " nfsmount: input: ", 2); 694 replicated = (mfs_in->mfs_next != NULL); 695 m.mnt_mntopts = opts; 696 if (replicated && hasmntopt(&m, MNTOPT_SOFT)) { 697 if (verbose) 698 syslog(LOG_WARNING, 699 "mount on %s is soft and will not be replicated.", mntpnt); 700 replicated = 0; 701 } 702 if (replicated && !hasmntopt(&m, MNTOPT_RO)) { 703 if (verbose) 704 syslog(LOG_WARNING, 705 "mount on %s is not read-only and will not be replicated.", 706 mntpnt); 707 replicated = 0; 708 } 709 if (replicated && cached) { 710 if (verbose) 711 syslog(LOG_WARNING, 712 "mount on %s is cached and will not be replicated.", 713 mntpnt); 714 replicated = 0; 715 } 716 if (replicated) 717 loglevel = LOG_WARNING; 718 else 719 loglevel = LOG_ERR; 720 721 if (trace > 1) { 722 if (replicated) 723 trace_prt(1, " nfsmount: replicated mount on %s %s:\n", 724 mntpnt, opts); 725 else 726 trace_prt(1, " nfsmount: standard mount on %s %s:\n", 727 mntpnt, opts); 728 for (mfs = mfs_in; mfs; mfs = mfs->mfs_next) 729 trace_prt(1, " %s:%s\n", 730 mfs->mfs_host, mfs->mfs_dir); 731 } 732 733 /* 734 * Make sure mountpoint is safe to mount on 735 */ 736 if (lstat(mntpnt, &stbuf) < 0) { 737 syslog(LOG_ERR, "Couldn't stat %s: %m", mntpnt); 738 return (NFSERR_NOENT); 739 } 740 741 /* 742 * Get protocol specified in options list, if any. 743 */ 744 if ((str_opt(&m, "proto", &nfs_proto)) == -1) { 745 return (NFSERR_NOENT); 746 } 747 748 /* 749 * Get port specified in options list, if any. 750 */ 751 got_val = nopt(&m, MNTOPT_PORT, (int *)&nfs_port); 752 if (!got_val) 753 nfs_port = 0; /* "unspecified" */ 754 if (nfs_port > USHRT_MAX) { 755 syslog(LOG_ERR, "%s: invalid port number %d", mntpnt, nfs_port); 756 return (NFSERR_NOENT); 757 } 758 759 /* 760 * Set mount(2) flags here, outside of the loop. 761 */ 762 flags = MS_OPTIONSTR; 763 flags |= (hasmntopt(&m, MNTOPT_RO) == NULL) ? 0 : MS_RDONLY; 764 flags |= (hasmntopt(&m, MNTOPT_NOSUID) == NULL) ? 0 : MS_NOSUID; 765 flags |= overlay ? MS_OVERLAY : 0; 766 if (mntpnt[strlen(mntpnt) - 1] != ' ') 767 /* direct mount point without offsets */ 768 flags |= MS_OVERLAY; 769 770 use_pubfh = (hasmntopt(&m, MNTOPT_PUBLIC) == NULL) ? FALSE : TRUE; 771 772 (void) memset(&mfssnego_init, 0, sizeof (mfs_snego_t)); 773 if (hasmntopt(&m, MNTOPT_SECURE) != NULL) { 774 if (++mfssnego_init.sec_opt > 1) { 775 syslog(loglevel, 776 "conflicting security options"); 777 return (NFSERR_IO); 778 } 779 if (nfs_getseconfig_byname("dh", &mfssnego_init.nfs_sec)) { 780 syslog(loglevel, 781 "error getting dh information from %s", 782 NFSSEC_CONF); 783 return (NFSERR_IO); 784 } 785 } 786 787 /* 788 * Have to workaround the fact that hasmntopt() returns true 789 * when comparing "secure" (in &m) with "sec". 790 */ 791 if (hasmntopt(&m, "sec=") != NULL) { 792 if ((str_opt(&m, MNTOPT_SEC, 793 &mfssnego_init.nfs_flavor)) == -1) { 794 syslog(LOG_ERR, "nfsmount: no memory"); 795 return (NFSERR_IO); 796 } 797 } 798 799 if (mfssnego_init.nfs_flavor) { 800 if (++mfssnego_init.sec_opt > 1) { 801 syslog(loglevel, 802 "conflicting security options"); 803 free(mfssnego_init.nfs_flavor); 804 return (NFSERR_IO); 805 } 806 if (nfs_getseconfig_byname(mfssnego_init.nfs_flavor, 807 &mfssnego_init.nfs_sec)) { 808 syslog(loglevel, 809 "error getting %s information from %s", 810 mfssnego_init.nfs_flavor, NFSSEC_CONF); 811 free(mfssnego_init.nfs_flavor); 812 return (NFSERR_IO); 813 } 814 free(mfssnego_init.nfs_flavor); 815 } 816 817 nextentry: 818 skipentry = 0; 819 820 got_val = nopt(&m, MNTOPT_VERS, (int *)&nfsvers); 821 if (!got_val) 822 nfsvers = 0; /* "unspecified" */ 823 if (set_versrange(nfsvers, &vers, &versmin) != 0) { 824 syslog(LOG_ERR, "Incorrect NFS version specified for %s", 825 mntpnt); 826 last_error = NFSERR_NOENT; 827 goto ret; 828 } 829 830 if (nfsvers != 0) { 831 pubversmax = pubversmin = nfsvers; 832 } else { 833 pubversmax = vers; 834 pubversmin = versmin; 835 } 836 837 /* 838 * Walk the whole list, pinging and collecting version 839 * info so that we can make sure the mount will be 840 * homogeneous with respect to version. 841 * 842 * If we have a version preference, this is easy; we'll 843 * just reject anything that doesn't match. 844 * 845 * If not, we want to try to provide the best compromise 846 * that considers proximity, preference for a higher version, 847 * sorted order, and number of replicas. We will count 848 * the number of V2 and V3 replicas and also the number 849 * which are "near", i.e. the localhost or on the same 850 * subnet. 851 */ 852 for (mfs = mfs_in; mfs; mfs = mfs->mfs_next) { 853 854 855 if (mfs->mfs_ignore) 856 continue; 857 858 host = mfs->mfs_host; 859 (void) memcpy(&mfssnego, &mfssnego_init, sizeof (mfs_snego_t)); 860 861 if (use_pubfh == TRUE || mfs->mfs_flags & MFS_URL) { 862 char *path; 863 864 if (nfs_port != 0 && mfs->mfs_port != 0 && 865 nfs_port != mfs->mfs_port) { 866 867 syslog(LOG_ERR, "nfsmount: port (%u) in nfs URL" 868 " not the same as port (%d) in port " 869 "option\n", mfs->mfs_port, nfs_port); 870 last_error = NFSERR_IO; 871 goto out; 872 873 } else if (nfs_port != 0) 874 thisport = nfs_port; 875 else 876 thisport = mfs->mfs_port; 877 878 dir = mfs->mfs_dir; 879 880 if ((mfs->mfs_flags & MFS_URL) == 0) { 881 path = malloc(strlen(dir) + 2); 882 if (path == NULL) { 883 syslog(LOG_ERR, "nfsmount: no memory"); 884 last_error = NFSERR_IO; 885 goto out; 886 } 887 path[0] = (char)WNL_NATIVEPATH; 888 (void) strcpy(&path[1], dir); 889 } else { 890 path = dir; 891 } 892 893 argp = (struct nfs_args *) 894 malloc(sizeof (struct nfs_args)); 895 896 if (!argp) { 897 if (path != dir) 898 free(path); 899 syslog(LOG_ERR, "nfsmount: no memory"); 900 last_error = NFSERR_IO; 901 goto out; 902 } 903 (void) memset(argp, 0, sizeof (*argp)); 904 905 /* 906 * RDMA support 907 * By now Mount argument struct has been allocated, 908 * either a pub_fh path will be taken or the regular 909 * one. So here if a protocol was specified and it 910 * was not rdma we let it be, else we set DO_RDMA. 911 * If no proto was there we advise on trying RDMA. 912 */ 913 if (nfs_proto) { 914 if (strcmp(nfs_proto, "rdma") == 0) { 915 free(nfs_proto); 916 nfs_proto = NULL; 917 argp->flags |= NFSMNT_DORDMA; 918 } 919 } else 920 argp->flags |= NFSMNT_TRYRDMA; 921 922 for (pubvers = pubversmax; pubvers >= pubversmin; 923 pubvers--) { 924 925 nconf = NULL; 926 argp->addr = get_pubfh(host, pubvers, &mfssnego, 927 &nconf, nfs_proto, thisport, NULL, 928 &argp->fh, TRUE, path); 929 930 if (argp->addr != NULL) 931 break; 932 933 if (nconf != NULL) 934 freenetconfigent(nconf); 935 } 936 937 if (path != dir) 938 free(path); 939 940 if (argp->addr != NULL) { 941 942 /* 943 * The use of llock option for NFSv4 944 * mounts is not required since file 945 * locking is included within the protocol 946 */ 947 if (pubvers != NFS_V4) 948 argp->flags |= NFSMNT_LLOCK; 949 950 argp->flags |= NFSMNT_PUBLIC; 951 952 mfs->mfs_args = argp; 953 mfs->mfs_version = pubvers; 954 mfs->mfs_nconf = nconf; 955 mfs->mfs_flags |= MFS_FH_VIA_WEBNFS; 956 957 } else { 958 free(argp); 959 960 /* 961 * If -public was specified, give up 962 * on this entry now. 963 */ 964 if (use_pubfh == TRUE) { 965 syslog(loglevel, 966 "%s: no public file handle support", 967 host); 968 last_error = NFSERR_NOENT; 969 mfs->mfs_ignore = 1; 970 continue; 971 } 972 973 /* 974 * Back off to a conventional mount. 975 * 976 * URL's can contain escape characters. Get 977 * rid of them. 978 */ 979 path = malloc(strlen(dir) + 2); 980 981 if (path == NULL) { 982 syslog(LOG_ERR, "nfsmount: no memory"); 983 last_error = NFSERR_IO; 984 goto out; 985 } 986 987 strcpy(path, dir); 988 URLparse(path); 989 mfs->mfs_dir = path; 990 mfs->mfs_flags |= MFS_ALLOC_DIR; 991 mfs->mfs_flags &= ~MFS_URL; 992 } 993 } 994 995 if ((mfs->mfs_flags & MFS_FH_VIA_WEBNFS) == 0) { 996 i = pingnfs(host, get_retry(opts) + 1, &vers, versmin, 997 0, FALSE, NULL, nfs_proto); 998 if (i != RPC_SUCCESS) { 999 if (i == RPC_PROGVERSMISMATCH) { 1000 syslog(loglevel, "server %s: NFS " 1001 "protocol version mismatch", 1002 host); 1003 } else { 1004 syslog(loglevel, "server %s not " 1005 "responding", host); 1006 } 1007 mfs->mfs_ignore = 1; 1008 last_error = NFSERR_NOENT; 1009 continue; 1010 } 1011 if (nfsvers != 0 && nfsvers != vers) { 1012 if (nfs_proto == NULL) 1013 syslog(loglevel, 1014 "NFS version %d " 1015 "not supported by %s", 1016 nfsvers, host); 1017 else 1018 syslog(loglevel, 1019 "NFS version %d " 1020 "with proto %s " 1021 "not supported by %s", 1022 nfsvers, nfs_proto, host); 1023 mfs->mfs_ignore = 1; 1024 last_error = NFSERR_NOENT; 1025 continue; 1026 } 1027 } 1028 1029 switch (vers) { 1030 case NFS_V4: v4cnt++; break; 1031 case NFS_V3: v3cnt++; break; 1032 case NFS_VERSION: v2cnt++; break; 1033 default: break; 1034 } 1035 1036 /* 1037 * It's not clear how useful this stuff is if 1038 * we are using webnfs across the internet, but it 1039 * can't hurt. 1040 */ 1041 if (mfs->mfs_distance && 1042 mfs->mfs_distance <= DIST_MYSUB) { 1043 switch (vers) { 1044 case NFS_V4: v4near++; break; 1045 case NFS_V3: v3near++; break; 1046 case NFS_VERSION: v2near++; break; 1047 default: break; 1048 } 1049 } 1050 1051 /* 1052 * If the mount is not replicated, we don't want to 1053 * ping every entry, so we'll stop here. This means 1054 * that we may have to go back to "nextentry" above 1055 * to consider another entry if there we can't get 1056 * all the way to mount(2) with this one. 1057 */ 1058 if (!replicated) 1059 break; 1060 } 1061 1062 if (nfsvers == 0) { 1063 /* 1064 * Choose the NFS version. 1065 * We prefer higher versions, but will choose a one- 1066 * version downgrade in service if we can use a local 1067 * network interface and avoid a router. 1068 */ 1069 if (v4cnt && v4cnt >= v3cnt && (v4near || !v3near)) 1070 nfsvers = NFS_V4; 1071 else if (v3cnt && v3cnt >= v2cnt && (v3near || !v2near)) 1072 nfsvers = NFS_V3; 1073 else 1074 nfsvers = NFS_VERSION; 1075 if (trace > 2) 1076 trace_prt(1, 1077 " nfsmount: v4=%d[%d]v3=%d[%d],v2=%d[%d] => v%d.\n", 1078 v4cnt, v4near, v3cnt, v3near, 1079 v2cnt, v2near, nfsvers); 1080 } 1081 1082 /* 1083 * Since we don't support different NFS versions in replicated 1084 * mounts, set fstype now. 1085 * Also take the opportunity to set 1086 * the mount protocol version as appropriate. 1087 */ 1088 switch (nfsvers) { 1089 case NFS_V4: 1090 fstype = MNTTYPE_NFS4; 1091 break; 1092 case NFS_V3: 1093 fstype = MNTTYPE_NFS3; 1094 if (use_pubfh == FALSE) { 1095 mountversmax = MOUNTVERS3; 1096 versmin = MOUNTVERS3; 1097 } 1098 break; 1099 case NFS_VERSION: 1100 fstype = MNTTYPE_NFS; 1101 if (use_pubfh == FALSE) { 1102 mountversmax = MOUNTVERS_POSIX; 1103 versmin = MOUNTVERS; 1104 } 1105 break; 1106 } 1107 1108 /* 1109 * Our goal here is to evaluate each of several possible 1110 * replicas and try to come up with a list we can hand 1111 * to mount(2). If we don't have a valid "head" at the 1112 * end of this process, it means we have rejected all 1113 * potential server:/path tuples. We will fail quietly 1114 * in front of mount(2), and will have printed errors 1115 * where we found them. 1116 * XXX - do option work outside loop w careful design 1117 * XXX - use macro for error condition free handling 1118 */ 1119 for (mfs = mfs_in; mfs; mfs = mfs->mfs_next) { 1120 1121 /* 1122 * Initialize retry and delay values on a per-server basis. 1123 */ 1124 retries = get_retry(opts); 1125 delay = INITDELAY; 1126 retry: 1127 if (mfs->mfs_ignore) 1128 continue; 1129 1130 /* 1131 * If we don't have a fh yet, and if this is not a replicated 1132 * mount, we haven't done a pingnfs() on the next entry, 1133 * so we don't know if the next entry is up or if it 1134 * supports an NFS version we like. So if we had a problem 1135 * with an entry, we need to go back and run through some new 1136 * code. 1137 */ 1138 if ((mfs->mfs_flags & MFS_FH_VIA_WEBNFS) == 0 && 1139 !replicated && skipentry) 1140 goto nextentry; 1141 1142 vers = mountversmax; 1143 host = mfs->mfs_host; 1144 dir = mfs->mfs_dir; 1145 (void) sprintf(remname, "%s:%s", host, dir); 1146 if (trace > 4 && replicated) 1147 trace_prt(1, " nfsmount: examining %s\n", remname); 1148 1149 /* 1150 * If it's cached we need to get cachefs to mount it. 1151 */ 1152 if (cached) { 1153 char *copts = opts; 1154 1155 /* 1156 * If we started with a URL we need to turn on 1157 * -o public if not on already 1158 */ 1159 if (use_pubfh == FALSE && 1160 (mfs->mfs_flags & MFS_FH_VIA_WEBNFS)) { 1161 1162 copts = malloc(strlen(opts) + 1163 strlen(",public")+1); 1164 1165 if (copts == NULL) { 1166 syslog(LOG_ERR, "nfsmount: no memory"); 1167 last_error = NFSERR_IO; 1168 goto out; 1169 } 1170 1171 strcpy(copts, opts); 1172 1173 if (strlen(copts) != 0) 1174 strcat(copts, ","); 1175 1176 strcat(copts, "public"); 1177 } 1178 1179 last_error = mount_generic(remname, MNTTYPE_CACHEFS, 1180 copts, mntpnt, overlay); 1181 1182 if (copts != opts) 1183 free(copts); 1184 1185 if (last_error) { 1186 skipentry = 1; 1187 mfs->mfs_ignore = 1; 1188 continue; 1189 } 1190 goto out; 1191 } 1192 1193 if (mfs->mfs_args == NULL) { 1194 1195 /* 1196 * Allocate nfs_args structure 1197 */ 1198 argp = (struct nfs_args *) 1199 malloc(sizeof (struct nfs_args)); 1200 1201 if (!argp) { 1202 syslog(LOG_ERR, "nfsmount: no memory"); 1203 last_error = NFSERR_IO; 1204 goto out; 1205 } 1206 1207 (void) memset(argp, 0, sizeof (*argp)); 1208 1209 /* 1210 * RDMA support 1211 * By now Mount argument struct has been allocated, 1212 * either a pub_fh path will be taken or the regular 1213 * one. So here if a protocol was specified and it 1214 * was not rdma we let it be, else we set DO_RDMA. 1215 * If no proto was there we advise on trying RDMA. 1216 */ 1217 if (nfs_proto) { 1218 if (strcmp(nfs_proto, "rdma") == 0) { 1219 free(nfs_proto); 1220 nfs_proto = NULL; 1221 argp->flags |= NFSMNT_DORDMA; 1222 } 1223 } else 1224 argp->flags |= NFSMNT_TRYRDMA; 1225 } else { 1226 argp = mfs->mfs_args; 1227 mfs->mfs_args = NULL; 1228 1229 /* 1230 * Skip entry if we already have file handle but the 1231 * NFS version is wrong. 1232 */ 1233 if ((mfs->mfs_flags & MFS_FH_VIA_WEBNFS) && 1234 mfs->mfs_version != nfsvers) { 1235 1236 free(argp); 1237 skipentry = 1; 1238 mfs->mfs_ignore = 1; 1239 continue; 1240 } 1241 } 1242 1243 prevhead = head; 1244 prevtail = tail; 1245 if (!head) 1246 head = tail = argp; 1247 else 1248 tail = tail->nfs_ext_u.nfs_extB.next = argp; 1249 1250 /* 1251 * WebNFS and NFSv4 behave similarly in that they 1252 * don't use the mount protocol. Therefore, avoid 1253 * mount protocol like things when version 4 is being 1254 * used. 1255 */ 1256 if ((mfs->mfs_flags & MFS_FH_VIA_WEBNFS) == 0 && 1257 nfsvers != NFS_V4) { 1258 timeout.tv_usec = 0; 1259 timeout.tv_sec = rpc_timeout; 1260 rpc_stat = RPC_TIMEDOUT; 1261 1262 /* Create the client handle. */ 1263 1264 if (trace > 1) { 1265 trace_prt(1, " nfsmount: Get mount version: request " 1266 "vers=%d min=%d\n", vers, versmin); 1267 } 1268 1269 while ((cl = clnt_create_vers(host, MOUNTPROG, &outvers, 1270 versmin, vers, "udp")) == NULL) { 1271 if (trace > 4) { 1272 trace_prt(1, 1273 " nfsmount: Can't get mount version: rpcerr=%d\n", 1274 rpc_createerr.cf_stat); 1275 } 1276 if (rpc_createerr.cf_stat == RPC_UNKNOWNHOST || 1277 rpc_createerr.cf_stat == RPC_TIMEDOUT) 1278 break; 1279 1280 /* 1281 * backoff and return lower version to retry the ping. 1282 * XXX we should be more careful and handle 1283 * RPC_PROGVERSMISMATCH here, because that error 1284 * is handled in clnt_create_vers(). It's not done to 1285 * stay in sync with the nfs mount command. 1286 */ 1287 vers--; 1288 if (vers < versmin) 1289 break; 1290 if (trace > 4) { 1291 trace_prt(1, " nfsmount: Try version=%d\n", vers); 1292 } 1293 } 1294 1295 if (cl == NULL) { 1296 free(argp); 1297 head = prevhead; 1298 tail = prevtail; 1299 if (tail) 1300 tail->nfs_ext_u.nfs_extB.next = NULL; 1301 last_error = NFSERR_NOENT; 1302 1303 if (rpc_createerr.cf_stat != RPC_UNKNOWNHOST && 1304 rpc_createerr.cf_stat != RPC_PROGVERSMISMATCH && 1305 retries-- > 0) { 1306 DELAY(delay) 1307 goto retry; 1308 } 1309 1310 syslog(loglevel, "%s %s", host, 1311 clnt_spcreateerror("server not responding")); 1312 skipentry = 1; 1313 mfs->mfs_ignore = 1; 1314 continue; 1315 } 1316 if (trace > 1) { 1317 trace_prt(1, " nfsmount: mount version=%d\n", outvers); 1318 } 1319 #ifdef MALLOC_DEBUG 1320 add_alloc("CLNT_HANDLE", cl, 0, __FILE__, __LINE__); 1321 add_alloc("AUTH_HANDLE", cl->cl_auth, 0, 1322 __FILE__, __LINE__); 1323 #endif 1324 1325 if (__clnt_bindresvport(cl) < 0) { 1326 free(argp); 1327 head = prevhead; 1328 tail = prevtail; 1329 if (tail) 1330 tail->nfs_ext_u.nfs_extB.next = NULL; 1331 last_error = NFSERR_NOENT; 1332 1333 if (retries-- > 0) { 1334 destroy_auth_client_handle(cl); 1335 DELAY(delay); 1336 goto retry; 1337 } 1338 1339 syslog(loglevel, "mount %s: %s", host, 1340 "Couldn't bind to reserved port"); 1341 destroy_auth_client_handle(cl); 1342 skipentry = 1; 1343 mfs->mfs_ignore = 1; 1344 continue; 1345 } 1346 1347 #ifdef MALLOC_DEBUG 1348 drop_alloc("AUTH_HANDLE", cl->cl_auth, __FILE__, __LINE__); 1349 #endif 1350 AUTH_DESTROY(cl->cl_auth); 1351 if ((cl->cl_auth = authsys_create_default()) == NULL) { 1352 free(argp); 1353 head = prevhead; 1354 tail = prevtail; 1355 if (tail) 1356 tail->nfs_ext_u.nfs_extB.next = NULL; 1357 last_error = NFSERR_NOENT; 1358 1359 if (retries-- > 0) { 1360 destroy_auth_client_handle(cl); 1361 DELAY(delay); 1362 goto retry; 1363 } 1364 1365 syslog(loglevel, "mount %s: %s", host, 1366 "Failed creating default auth handle"); 1367 destroy_auth_client_handle(cl); 1368 skipentry = 1; 1369 mfs->mfs_ignore = 1; 1370 continue; 1371 } 1372 #ifdef MALLOC_DEBUG 1373 add_alloc("AUTH_HANDLE", cl->cl_auth, 0, 1374 __FILE__, __LINE__); 1375 #endif 1376 } else 1377 cl = NULL; 1378 1379 /* 1380 * set security options 1381 */ 1382 sec_opt = 0; 1383 (void) memset(&nfs_sec, 0, sizeof (nfs_sec)); 1384 if (hasmntopt(&m, MNTOPT_SECURE) != NULL) { 1385 if (++sec_opt > 1) { 1386 syslog(loglevel, 1387 "conflicting security options for %s", 1388 remname); 1389 free(argp); 1390 head = prevhead; 1391 tail = prevtail; 1392 if (tail) 1393 tail->nfs_ext_u.nfs_extB.next = NULL; 1394 last_error = NFSERR_IO; 1395 destroy_auth_client_handle(cl); 1396 skipentry = 1; 1397 mfs->mfs_ignore = 1; 1398 continue; 1399 } 1400 if (nfs_getseconfig_byname("dh", &nfs_sec)) { 1401 syslog(loglevel, 1402 "error getting dh information from %s", 1403 NFSSEC_CONF); 1404 free(argp); 1405 head = prevhead; 1406 tail = prevtail; 1407 if (tail) 1408 tail->nfs_ext_u.nfs_extB.next = NULL; 1409 last_error = NFSERR_IO; 1410 destroy_auth_client_handle(cl); 1411 skipentry = 1; 1412 mfs->mfs_ignore = 1; 1413 continue; 1414 } 1415 } 1416 1417 nfs_flavor = NULL; 1418 /* 1419 * Have to workaround the fact that hasmntopt() returns true 1420 * when comparing "secure" (in &m) with "sec". 1421 */ 1422 if (hasmntopt(&m, "sec=") != NULL) { 1423 if ((str_opt(&m, MNTOPT_SEC, &nfs_flavor)) == -1) { 1424 syslog(LOG_ERR, "nfsmount: no memory"); 1425 last_error = NFSERR_IO; 1426 destroy_auth_client_handle(cl); 1427 goto out; 1428 } 1429 } 1430 1431 if (nfs_flavor) { 1432 if (++sec_opt > 1) { 1433 syslog(loglevel, 1434 "conflicting security options for %s", 1435 remname); 1436 free(nfs_flavor); 1437 free(argp); 1438 head = prevhead; 1439 tail = prevtail; 1440 if (tail) 1441 tail->nfs_ext_u.nfs_extB.next = NULL; 1442 last_error = NFSERR_IO; 1443 destroy_auth_client_handle(cl); 1444 skipentry = 1; 1445 mfs->mfs_ignore = 1; 1446 continue; 1447 } 1448 if (nfs_getseconfig_byname(nfs_flavor, &nfs_sec)) { 1449 syslog(loglevel, 1450 "error getting %s information from %s", 1451 nfs_flavor, NFSSEC_CONF); 1452 free(nfs_flavor); 1453 free(argp); 1454 head = prevhead; 1455 tail = prevtail; 1456 if (tail) 1457 tail->nfs_ext_u.nfs_extB.next = NULL; 1458 last_error = NFSERR_IO; 1459 destroy_auth_client_handle(cl); 1460 skipentry = 1; 1461 mfs->mfs_ignore = 1; 1462 continue; 1463 } 1464 free(nfs_flavor); 1465 } 1466 1467 posix = (nfsvers != NFS_V4 && 1468 hasmntopt(&m, MNTOPT_POSIX) != NULL) ? 1 : 0; 1469 1470 if ((mfs->mfs_flags & MFS_FH_VIA_WEBNFS) == 0 && 1471 nfsvers != NFS_V4) { 1472 bool_t give_up_on_mnt; 1473 bool_t got_mnt_error; 1474 /* 1475 * If we started with a URL, if first byte of path is not "/", 1476 * then the mount will likely fail, so we should try again 1477 * with a prepended "/". 1478 */ 1479 if (mfs->mfs_flags & MFS_ALLOC_DIR && *dir != '/') 1480 give_up_on_mnt = FALSE; 1481 else 1482 give_up_on_mnt = TRUE; 1483 1484 got_mnt_error = FALSE; 1485 1486 try_mnt_slash: 1487 if (got_mnt_error == TRUE) { 1488 int i, l; 1489 1490 give_up_on_mnt = TRUE; 1491 l = strlen(dir); 1492 1493 /* 1494 * Insert a "/" to front of mfs_dir. 1495 */ 1496 for (i = l; i > 0; i--) 1497 dir[i] = dir[i-1]; 1498 1499 dir[0] = '/'; 1500 } 1501 1502 /* Get fhandle of remote path from server's mountd */ 1503 1504 switch (outvers) { 1505 case MOUNTVERS: 1506 if (posix) { 1507 free(argp); 1508 head = prevhead; 1509 tail = prevtail; 1510 if (tail) 1511 tail->nfs_ext_u.nfs_extB.next = NULL; 1512 last_error = NFSERR_NOENT; 1513 syslog(loglevel, "can't get posix info for %s", 1514 host); 1515 destroy_auth_client_handle(cl); 1516 skipentry = 1; 1517 mfs->mfs_ignore = 1; 1518 continue; 1519 } 1520 /* FALLTHRU */ 1521 case MOUNTVERS_POSIX: 1522 if (nfsvers == NFS_V3) { 1523 free(argp); 1524 head = prevhead; 1525 tail = prevtail; 1526 if (tail) 1527 tail->nfs_ext_u.nfs_extB.next = NULL; 1528 last_error = NFSERR_NOENT; 1529 syslog(loglevel, 1530 "%s doesn't support NFS Version 3", 1531 host); 1532 destroy_auth_client_handle(cl); 1533 skipentry = 1; 1534 mfs->mfs_ignore = 1; 1535 continue; 1536 } 1537 rpc_stat = clnt_call(cl, MOUNTPROC_MNT, 1538 xdr_dirpath, (caddr_t)&dir, 1539 xdr_fhstatus, (caddr_t)&fhs, timeout); 1540 if (rpc_stat != RPC_SUCCESS) { 1541 1542 if (give_up_on_mnt == FALSE) { 1543 got_mnt_error = TRUE; 1544 goto try_mnt_slash; 1545 } 1546 1547 /* 1548 * Given the way "clnt_sperror" works, the "%s" 1549 * immediately following the "not responding" 1550 * is correct. 1551 */ 1552 free(argp); 1553 head = prevhead; 1554 tail = prevtail; 1555 if (tail) 1556 tail->nfs_ext_u.nfs_extB.next = NULL; 1557 last_error = NFSERR_NOENT; 1558 1559 if (retries-- > 0) { 1560 destroy_auth_client_handle(cl); 1561 DELAY(delay); 1562 goto retry; 1563 } 1564 1565 if (trace > 3) { 1566 trace_prt(1, 1567 " nfsmount: mount RPC failed for %s\n", 1568 host); 1569 } 1570 syslog(loglevel, "%s server not responding%s", 1571 host, clnt_sperror(cl, "")); 1572 destroy_auth_client_handle(cl); 1573 skipentry = 1; 1574 mfs->mfs_ignore = 1; 1575 continue; 1576 } 1577 if ((errno = fhs.fhs_status) != MNT_OK) { 1578 1579 if (give_up_on_mnt == FALSE) { 1580 got_mnt_error = TRUE; 1581 goto try_mnt_slash; 1582 } 1583 1584 free(argp); 1585 head = prevhead; 1586 tail = prevtail; 1587 if (tail) 1588 tail->nfs_ext_u.nfs_extB.next = NULL; 1589 if (errno == EACCES) { 1590 status = NFSERR_ACCES; 1591 } else { 1592 syslog(loglevel, "%s: %m", host); 1593 status = NFSERR_IO; 1594 } 1595 if (trace > 3) { 1596 trace_prt(1, " nfsmount: mount RPC gave" 1597 " %d for %s:%s\n", 1598 errno, host, dir); 1599 } 1600 last_error = status; 1601 destroy_auth_client_handle(cl); 1602 skipentry = 1; 1603 mfs->mfs_ignore = 1; 1604 continue; 1605 } 1606 argp->fh = malloc((sizeof (fhandle))); 1607 if (!argp->fh) { 1608 syslog(LOG_ERR, "nfsmount: no memory"); 1609 last_error = NFSERR_IO; 1610 destroy_auth_client_handle(cl); 1611 goto out; 1612 } 1613 (void) memcpy(argp->fh, &fhs.fhstatus_u.fhs_fhandle, 1614 sizeof (fhandle)); 1615 break; 1616 case MOUNTVERS3: 1617 posix = 0; 1618 (void) memset((char *)&res3, '\0', sizeof (res3)); 1619 rpc_stat = clnt_call(cl, MOUNTPROC_MNT, 1620 xdr_dirpath, (caddr_t)&dir, 1621 xdr_mountres3, (caddr_t)&res3, timeout); 1622 if (rpc_stat != RPC_SUCCESS) { 1623 1624 if (give_up_on_mnt == FALSE) { 1625 got_mnt_error = TRUE; 1626 goto try_mnt_slash; 1627 } 1628 1629 /* 1630 * Given the way "clnt_sperror" works, the "%s" 1631 * immediately following the "not responding" 1632 * is correct. 1633 */ 1634 free(argp); 1635 head = prevhead; 1636 tail = prevtail; 1637 if (tail) 1638 tail->nfs_ext_u.nfs_extB.next = NULL; 1639 last_error = NFSERR_NOENT; 1640 1641 if (retries-- > 0) { 1642 destroy_auth_client_handle(cl); 1643 DELAY(delay); 1644 goto retry; 1645 } 1646 1647 if (trace > 3) { 1648 trace_prt(1, 1649 " nfsmount: mount RPC failed for %s\n", 1650 host); 1651 } 1652 syslog(loglevel, "%s server not responding%s", 1653 remname, clnt_sperror(cl, "")); 1654 destroy_auth_client_handle(cl); 1655 skipentry = 1; 1656 mfs->mfs_ignore = 1; 1657 continue; 1658 } 1659 if ((errno = res3.fhs_status) != MNT_OK) { 1660 1661 if (give_up_on_mnt == FALSE) { 1662 got_mnt_error = TRUE; 1663 goto try_mnt_slash; 1664 } 1665 1666 free(argp); 1667 head = prevhead; 1668 tail = prevtail; 1669 if (tail) 1670 tail->nfs_ext_u.nfs_extB.next = NULL; 1671 if (errno == EACCES) { 1672 status = NFSERR_ACCES; 1673 } else { 1674 syslog(loglevel, "%s: %m", remname); 1675 status = NFSERR_IO; 1676 } 1677 if (trace > 3) { 1678 trace_prt(1, " nfsmount: mount RPC gave" 1679 " %d for %s:%s\n", 1680 errno, host, dir); 1681 } 1682 last_error = status; 1683 destroy_auth_client_handle(cl); 1684 skipentry = 1; 1685 mfs->mfs_ignore = 1; 1686 continue; 1687 } 1688 1689 /* 1690 * Negotiate the security flavor for nfs_mount 1691 */ 1692 auths = 1693 res3.mountres3_u.mountinfo.auth_flavors.auth_flavors_val; 1694 count = 1695 res3.mountres3_u.mountinfo.auth_flavors.auth_flavors_len; 1696 1697 if (sec_opt) { 1698 for (i = 0; i < count; i++) 1699 if (auths[i] == nfs_sec.sc_nfsnum) { 1700 break; 1701 } 1702 if (i >= count) { 1703 syslog(LOG_ERR, 1704 "%s: does not support security \"%s\"\n", 1705 remname, nfs_sec.sc_name); 1706 clnt_freeres(cl, xdr_mountres3, 1707 (caddr_t)&res3); 1708 free(argp); 1709 head = prevhead; 1710 tail = prevtail; 1711 if (tail) 1712 tail->nfs_ext_u.nfs_extB.next = NULL; 1713 last_error = NFSERR_IO; 1714 destroy_auth_client_handle(cl); 1715 skipentry = 1; 1716 mfs->mfs_ignore = 1; 1717 continue; 1718 } 1719 } else { 1720 if (count > 0) { 1721 for (i = 0; i < count; i++) { 1722 if (!(scerror = 1723 nfs_getseconfig_bynumber(auths[i], &nfs_sec))) { 1724 sec_opt++; 1725 break; 1726 } 1727 } 1728 if (i >= count) { 1729 if (nfs_syslog_scerr(scerror, 1730 scerror_msg) 1731 != -1) { 1732 syslog(LOG_ERR, 1733 "%s cannot be mounted because it is shared with " 1734 "security flavor %d which %s", 1735 remname, 1736 auths[i-1], 1737 scerror_msg); 1738 } 1739 clnt_freeres(cl, xdr_mountres3, 1740 (caddr_t)&res3); 1741 free(argp); 1742 head = prevhead; 1743 tail = prevtail; 1744 if (tail) 1745 tail->nfs_ext_u.nfs_extB.next = NULL; 1746 last_error = NFSERR_IO; 1747 destroy_auth_client_handle(cl); 1748 skipentry = 1; 1749 mfs->mfs_ignore = 1; 1750 continue; 1751 } 1752 } 1753 } 1754 1755 fh3.fh3_length = 1756 res3.mountres3_u.mountinfo.fhandle.fhandle3_len; 1757 (void) memcpy(fh3.fh3_u.data, 1758 res3.mountres3_u.mountinfo.fhandle.fhandle3_val, 1759 fh3.fh3_length); 1760 clnt_freeres(cl, xdr_mountres3, 1761 (caddr_t)&res3); 1762 argp->fh = malloc(sizeof (nfs_fh3)); 1763 if (!argp->fh) { 1764 syslog(LOG_ERR, "nfsmount: no memory"); 1765 last_error = NFSERR_IO; 1766 destroy_auth_client_handle(cl); 1767 goto out; 1768 } 1769 (void) memcpy(argp->fh, &fh3, sizeof (nfs_fh3)); 1770 break; 1771 default: 1772 free(argp); 1773 head = prevhead; 1774 tail = prevtail; 1775 if (tail) 1776 tail->nfs_ext_u.nfs_extB.next = NULL; 1777 last_error = NFSERR_NOENT; 1778 syslog(loglevel, "unknown MOUNT version %ld on %s", 1779 vers, remname); 1780 destroy_auth_client_handle(cl); 1781 skipentry = 1; 1782 mfs->mfs_ignore = 1; 1783 continue; 1784 } /* switch */ 1785 } 1786 if (nfsvers == NFS_V4) { 1787 argp->fh = strdup(dir); 1788 if (argp->fh == NULL) { 1789 syslog(LOG_ERR, "nfsmount: no memory"); 1790 last_error = NFSERR_IO; 1791 goto out; 1792 } 1793 } 1794 1795 if (trace > 4) 1796 trace_prt(1, " nfsmount: have %s filehandle for %s\n", 1797 fstype, remname); 1798 1799 argp->flags |= NFSMNT_NEWARGS; 1800 argp->flags |= NFSMNT_INT; /* default is "intr" */ 1801 argp->hostname = strdup(host); 1802 argp->flags |= NFSMNT_HOSTNAME; 1803 1804 /* 1805 * In this case, we want NFSv4 to behave like 1806 * non-WebNFS so that we get the server address. 1807 */ 1808 if ((mfs->mfs_flags & MFS_FH_VIA_WEBNFS) == 0) { 1809 nconf = NULL; 1810 1811 if (nfs_port != 0) 1812 thisport = nfs_port; 1813 else 1814 thisport = mfs->mfs_port; 1815 1816 /* 1817 * For NFSv4, we want to avoid rpcbind, so call 1818 * get_server_stuff() directly to tell it that 1819 * we want to go "direct_to_server". Otherwise, 1820 * do what has always been done. 1821 */ 1822 if (nfsvers == NFS_V4) { 1823 enum clnt_stat cstat; 1824 argp->addr = get_server_stuff(SERVER_ADDR, 1825 host, NFS_PROGRAM, nfsvers, NULL, 1826 &nconf, nfs_proto, thisport, NULL, 1827 NULL, TRUE, NULL, &cstat); 1828 } else { 1829 argp->addr = get_addr(host, NFS_PROGRAM, 1830 nfsvers, &nconf, nfs_proto, 1831 thisport, NULL); 1832 } 1833 1834 if (argp->addr == NULL) { 1835 if (argp->hostname) 1836 free(argp->hostname); 1837 free(argp->fh); 1838 free(argp); 1839 head = prevhead; 1840 tail = prevtail; 1841 if (tail) 1842 tail->nfs_ext_u.nfs_extB.next = NULL; 1843 last_error = NFSERR_NOENT; 1844 1845 if (retries-- > 0) { 1846 destroy_auth_client_handle(cl); 1847 DELAY(delay); 1848 goto retry; 1849 } 1850 1851 syslog(loglevel, "%s: no NFS service", host); 1852 destroy_auth_client_handle(cl); 1853 skipentry = 1; 1854 mfs->mfs_ignore = 1; 1855 continue; 1856 } 1857 if (trace > 4) 1858 trace_prt(1, 1859 "\tnfsmount: have net address for %s\n", 1860 remname); 1861 1862 } else { 1863 nconf = mfs->mfs_nconf; 1864 mfs->mfs_nconf = NULL; 1865 } 1866 1867 argp->flags |= NFSMNT_KNCONF; 1868 argp->knconf = get_knconf(nconf); 1869 if (argp->knconf == NULL) { 1870 netbuf_free(argp->addr); 1871 freenetconfigent(nconf); 1872 if (argp->hostname) 1873 free(argp->hostname); 1874 free(argp->fh); 1875 free(argp); 1876 head = prevhead; 1877 tail = prevtail; 1878 if (tail) 1879 tail->nfs_ext_u.nfs_extB.next = NULL; 1880 last_error = NFSERR_NOSPC; 1881 destroy_auth_client_handle(cl); 1882 skipentry = 1; 1883 mfs->mfs_ignore = 1; 1884 continue; 1885 } 1886 if (trace > 4) 1887 trace_prt(1, 1888 "\tnfsmount: have net config for %s\n", 1889 remname); 1890 1891 if (hasmntopt(&m, MNTOPT_SOFT) != NULL) { 1892 argp->flags |= NFSMNT_SOFT; 1893 } 1894 if (hasmntopt(&m, MNTOPT_NOINTR) != NULL) { 1895 argp->flags &= ~(NFSMNT_INT); 1896 } 1897 if (hasmntopt(&m, MNTOPT_NOAC) != NULL) { 1898 argp->flags |= NFSMNT_NOAC; 1899 } 1900 if (hasmntopt(&m, MNTOPT_NOCTO) != NULL) { 1901 argp->flags |= NFSMNT_NOCTO; 1902 } 1903 if (hasmntopt(&m, MNTOPT_FORCEDIRECTIO) != NULL) { 1904 argp->flags |= NFSMNT_DIRECTIO; 1905 } 1906 if (hasmntopt(&m, MNTOPT_NOFORCEDIRECTIO) != NULL) { 1907 argp->flags &= ~(NFSMNT_DIRECTIO); 1908 } 1909 1910 /* 1911 * Set up security data for argp->nfs_ext_u.nfs_extB.secdata. 1912 */ 1913 if (mfssnego.snego_done) { 1914 memcpy(&nfs_sec, &mfssnego.nfs_sec, 1915 sizeof (seconfig_t)); 1916 } else if (!sec_opt) { 1917 /* 1918 * Get default security mode. 1919 */ 1920 if (nfs_getseconfig_default(&nfs_sec)) { 1921 syslog(loglevel, 1922 "error getting default security entry\n"); 1923 free_knconf(argp->knconf); 1924 netbuf_free(argp->addr); 1925 freenetconfigent(nconf); 1926 if (argp->hostname) 1927 free(argp->hostname); 1928 free(argp->fh); 1929 free(argp); 1930 head = prevhead; 1931 tail = prevtail; 1932 if (tail) 1933 tail->nfs_ext_u.nfs_extB.next = NULL; 1934 last_error = NFSERR_NOSPC; 1935 destroy_auth_client_handle(cl); 1936 skipentry = 1; 1937 mfs->mfs_ignore = 1; 1938 continue; 1939 } 1940 argp->flags |= NFSMNT_SECDEFAULT; 1941 } 1942 1943 /* 1944 * For AUTH_DH 1945 * get the network address for the time service on 1946 * the server. If an RPC based time service is 1947 * not available then try the IP time service. 1948 * 1949 * Eventurally, we want to move this code to nfs_clnt_secdata() 1950 * when autod_nfs.c and mount.c can share the same 1951 * get_the_addr/get_the_stuff routine. 1952 */ 1953 secflags = 0; 1954 syncaddr = NULL; 1955 retaddrs = NULL; 1956 1957 if (nfs_sec.sc_rpcnum == AUTH_DH || nfsvers == NFS_V4) { 1958 /* 1959 * If not using the public fh and not NFS_V4, we can try 1960 * talking RPCBIND. Otherwise, assume that firewalls 1961 * prevent us from doing that. 1962 */ 1963 if ((mfs->mfs_flags & MFS_FH_VIA_WEBNFS) == 0 && 1964 nfsvers != NFS_V4) { 1965 syncaddr = get_the_stuff(SERVER_ADDR, host, RPCBPROG, 1966 RPCBVERS, NULL, nconf, 0, NULL, NULL, FALSE, 1967 NULL, NULL); 1968 } 1969 1970 if (syncaddr != NULL) { 1971 /* for flags in sec_data */ 1972 secflags |= AUTH_F_RPCTIMESYNC; 1973 } else { 1974 struct nd_hostserv hs; 1975 int error; 1976 1977 hs.h_host = host; 1978 hs.h_serv = "timserver"; 1979 error = netdir_getbyname(nconf, &hs, &retaddrs); 1980 1981 if (error != ND_OK && nfs_sec.sc_rpcnum == AUTH_DH) { 1982 syslog(loglevel, 1983 "%s: secure: no time service\n", host); 1984 free_knconf(argp->knconf); 1985 netbuf_free(argp->addr); 1986 freenetconfigent(nconf); 1987 if (argp->hostname) 1988 free(argp->hostname); 1989 free(argp->fh); 1990 free(argp); 1991 head = prevhead; 1992 tail = prevtail; 1993 if (tail) 1994 tail->nfs_ext_u.nfs_extB.next = NULL; 1995 last_error = NFSERR_IO; 1996 destroy_auth_client_handle(cl); 1997 skipentry = 1; 1998 mfs->mfs_ignore = 1; 1999 continue; 2000 } 2001 2002 if (error == ND_OK) 2003 syncaddr = retaddrs->n_addrs; 2004 2005 /* 2006 * For potential usage by NFS V4 when AUTH_DH 2007 * is negotiated via SECINFO in the kernel. 2008 */ 2009 if (nfsvers == NFS_V4 && syncaddr && 2010 host2netname(netname, host, NULL)) { 2011 argp->syncaddr = malloc(sizeof (struct netbuf)); 2012 argp->syncaddr->buf = malloc(syncaddr->len); 2013 (void) memcpy(argp->syncaddr->buf, 2014 syncaddr->buf, syncaddr->len); 2015 argp->syncaddr->len = syncaddr->len; 2016 argp->syncaddr->maxlen = syncaddr->maxlen; 2017 argp->netname = strdup(netname); 2018 argp->flags |= NFSMNT_SECURE; 2019 } 2020 } /* syncaddr */ 2021 } /* AUTH_DH */ 2022 2023 /* 2024 * TSOL notes: automountd in tsol extension 2025 * has "read down" capability, i.e. we allow 2026 * a user to trigger an nfs mount into a lower 2027 * labeled zone. We achieve this by always having 2028 * root issue the mount request so that the 2029 * lookup ops can go past /zone/<zone_name> 2030 * on the server side. 2031 */ 2032 if (is_system_labeled()) 2033 nfs_sec.sc_uid = (uid_t)0; 2034 else 2035 nfs_sec.sc_uid = uid; 2036 /* 2037 * If AUTH_DH is a chosen flavor now, its data will be stored 2038 * in the sec_data structure via nfs_clnt_secdata(). 2039 */ 2040 if (!(secdata = nfs_clnt_secdata(&nfs_sec, host, argp->knconf, 2041 syncaddr, secflags))) { 2042 syslog(LOG_ERR, 2043 "errors constructing security related data\n"); 2044 if (secflags & AUTH_F_RPCTIMESYNC) 2045 netbuf_free(syncaddr); 2046 else if (retaddrs) 2047 netdir_free(retaddrs, ND_ADDRLIST); 2048 if (argp->syncaddr) 2049 netbuf_free(argp->syncaddr); 2050 if (argp->netname) 2051 free(argp->netname); 2052 if (argp->hostname) 2053 free(argp->hostname); 2054 free_knconf(argp->knconf); 2055 netbuf_free(argp->addr); 2056 freenetconfigent(nconf); 2057 free(argp->fh); 2058 free(argp); 2059 head = prevhead; 2060 tail = prevtail; 2061 if (tail) 2062 tail->nfs_ext_u.nfs_extB.next = NULL; 2063 last_error = NFSERR_IO; 2064 destroy_auth_client_handle(cl); 2065 skipentry = 1; 2066 mfs->mfs_ignore = 1; 2067 continue; 2068 } 2069 NFS_ARGS_EXTB_secdata(*argp, secdata); 2070 /* end of security stuff */ 2071 2072 if (trace > 4) 2073 trace_prt(1, 2074 " nfsmount: have secure info for %s\n", remname); 2075 2076 if (hasmntopt(&m, MNTOPT_GRPID) != NULL) { 2077 argp->flags |= NFSMNT_GRPID; 2078 } 2079 if (nopt(&m, MNTOPT_RSIZE, &argp->rsize)) { 2080 argp->flags |= NFSMNT_RSIZE; 2081 } 2082 if (nopt(&m, MNTOPT_WSIZE, &argp->wsize)) { 2083 argp->flags |= NFSMNT_WSIZE; 2084 } 2085 if (nopt(&m, MNTOPT_TIMEO, &argp->timeo)) { 2086 argp->flags |= NFSMNT_TIMEO; 2087 } 2088 if (nopt(&m, MNTOPT_RETRANS, &argp->retrans)) { 2089 argp->flags |= NFSMNT_RETRANS; 2090 } 2091 if (nopt(&m, MNTOPT_ACTIMEO, &argp->acregmax)) { 2092 argp->flags |= NFSMNT_ACREGMAX; 2093 argp->flags |= NFSMNT_ACDIRMAX; 2094 argp->flags |= NFSMNT_ACDIRMIN; 2095 argp->flags |= NFSMNT_ACREGMIN; 2096 argp->acdirmin = argp->acregmin = argp->acdirmax 2097 = argp->acregmax; 2098 } else { 2099 if (nopt(&m, MNTOPT_ACREGMIN, &argp->acregmin)) { 2100 argp->flags |= NFSMNT_ACREGMIN; 2101 } 2102 if (nopt(&m, MNTOPT_ACREGMAX, &argp->acregmax)) { 2103 argp->flags |= NFSMNT_ACREGMAX; 2104 } 2105 if (nopt(&m, MNTOPT_ACDIRMIN, &argp->acdirmin)) { 2106 argp->flags |= NFSMNT_ACDIRMIN; 2107 } 2108 if (nopt(&m, MNTOPT_ACDIRMAX, &argp->acdirmax)) { 2109 argp->flags |= NFSMNT_ACDIRMAX; 2110 } 2111 } 2112 2113 if (posix) { 2114 argp->pathconf = NULL; 2115 if (error = get_pathconf(cl, dir, remname, 2116 &argp->pathconf, retries)) { 2117 if (secflags & AUTH_F_RPCTIMESYNC) 2118 netbuf_free(syncaddr); 2119 else if (retaddrs) 2120 netdir_free(retaddrs, ND_ADDRLIST); 2121 free_knconf(argp->knconf); 2122 netbuf_free(argp->addr); 2123 freenetconfigent(nconf); 2124 nfs_free_secdata( 2125 argp->nfs_ext_u.nfs_extB.secdata); 2126 if (argp->syncaddr) 2127 netbuf_free(argp->syncaddr); 2128 if (argp->netname) 2129 free(argp->netname); 2130 if (argp->hostname) 2131 free(argp->hostname); 2132 free(argp->fh); 2133 free(argp); 2134 head = prevhead; 2135 tail = prevtail; 2136 if (tail) 2137 tail->nfs_ext_u.nfs_extB.next = NULL; 2138 last_error = NFSERR_IO; 2139 2140 if (error == RET_RETRY && retries-- > 0) { 2141 destroy_auth_client_handle(cl); 2142 DELAY(delay); 2143 goto retry; 2144 } 2145 2146 destroy_auth_client_handle(cl); 2147 skipentry = 1; 2148 mfs->mfs_ignore = 1; 2149 continue; 2150 } 2151 argp->flags |= NFSMNT_POSIX; 2152 if (trace > 4) 2153 trace_prt(1, 2154 " nfsmount: have pathconf for %s\n", 2155 remname); 2156 } 2157 2158 /* 2159 * free loop-specific data structures 2160 */ 2161 destroy_auth_client_handle(cl); 2162 freenetconfigent(nconf); 2163 if (secflags & AUTH_F_RPCTIMESYNC) 2164 netbuf_free(syncaddr); 2165 else if (retaddrs) 2166 netdir_free(retaddrs, ND_ADDRLIST); 2167 2168 /* 2169 * Decide whether to use remote host's lockd or local locking. 2170 * If we are using the public fh, we've already turned 2171 * LLOCK on. 2172 */ 2173 if (hasmntopt(&m, MNTOPT_LLOCK)) 2174 argp->flags |= NFSMNT_LLOCK; 2175 if (!(argp->flags & NFSMNT_LLOCK) && nfsvers == NFS_VERSION && 2176 remote_lock(host, argp->fh)) { 2177 syslog(loglevel, "No network locking on %s : " 2178 "contact admin to install server change", host); 2179 argp->flags |= NFSMNT_LLOCK; 2180 } 2181 2182 /* 2183 * Build a string for /etc/mnttab. 2184 * If possible, coalesce strings with same 'dir' info. 2185 */ 2186 if ((mfs->mfs_flags & MFS_URL) == 0) { 2187 char *tmp; 2188 2189 if (mnttabcnt) { 2190 p = strrchr(mnttabtext, (int)':'); 2191 if (!p || strcmp(p+1, dir) != 0) { 2192 mnttabcnt += strlen(remname) + 2; 2193 } else { 2194 *p = '\0'; 2195 mnttabcnt += strlen(host) + 2; 2196 } 2197 if ((tmp = realloc(mnttabtext, 2198 mnttabcnt)) != NULL) { 2199 mnttabtext = tmp; 2200 strcat(mnttabtext, ","); 2201 } else { 2202 free(mnttabtext); 2203 mnttabtext = NULL; 2204 } 2205 } else { 2206 mnttabcnt = strlen(remname) + 1; 2207 if ((mnttabtext = malloc(mnttabcnt)) != NULL) 2208 mnttabtext[0] = '\0'; 2209 } 2210 2211 if (mnttabtext != NULL) 2212 strcat(mnttabtext, remname); 2213 2214 } else { 2215 char *tmp; 2216 int more_cnt = 0; 2217 char sport[16]; 2218 2219 more_cnt += strlen("nfs://"); 2220 more_cnt += strlen(mfs->mfs_host); 2221 2222 if (mfs->mfs_port != 0) { 2223 (void) sprintf(sport, ":%u", mfs->mfs_port); 2224 } else 2225 sport[0] = '\0'; 2226 2227 more_cnt += strlen(sport); 2228 more_cnt += 1; /* "/" */ 2229 more_cnt += strlen(mfs->mfs_dir); 2230 2231 if (mnttabcnt) { 2232 more_cnt += 1; /* "," */ 2233 mnttabcnt += more_cnt; 2234 2235 if ((tmp = realloc(mnttabtext, 2236 mnttabcnt)) != NULL) { 2237 mnttabtext = tmp; 2238 strcat(mnttabtext, ","); 2239 } else { 2240 free(mnttabtext); 2241 mnttabtext = NULL; 2242 } 2243 } else { 2244 mnttabcnt = more_cnt + 1; 2245 if ((mnttabtext = malloc(mnttabcnt)) != NULL) 2246 mnttabtext[0] = '\0'; 2247 } 2248 2249 if (mnttabtext != NULL) { 2250 strcat(mnttabtext, "nfs://"); 2251 strcat(mnttabtext, mfs->mfs_host); 2252 strcat(mnttabtext, sport); 2253 strcat(mnttabtext, "/"); 2254 strcat(mnttabtext, mfs->mfs_dir); 2255 } 2256 } 2257 2258 if (!mnttabtext) { 2259 syslog(LOG_ERR, "nfsmount: no memory"); 2260 last_error = NFSERR_IO; 2261 goto out; 2262 } 2263 2264 /* 2265 * At least one entry, can call mount(2). 2266 */ 2267 entries++; 2268 2269 /* 2270 * If replication was defeated, don't do more work 2271 */ 2272 if (!replicated) 2273 break; 2274 } 2275 2276 2277 /* 2278 * Did we get through all possibilities without success? 2279 */ 2280 if (!entries) 2281 goto out; 2282 2283 /* Make "xattr" the default if "noxattr" is not specified. */ 2284 strcpy(mopts, opts); 2285 if (!hasmntopt(&m, MNTOPT_NOXATTR) && !hasmntopt(&m, MNTOPT_XATTR)) { 2286 if (strlen(mopts) > 0) 2287 strcat(mopts, ","); 2288 strcat(mopts, "xattr"); 2289 } 2290 2291 /* 2292 * enable services as needed. 2293 */ 2294 { 2295 char **sl; 2296 2297 if (strcmp(fstype, MNTTYPE_NFS4) == 0) 2298 sl = service_list_v4; 2299 else 2300 sl = service_list; 2301 2302 (void) _check_services(sl); 2303 } 2304 2305 /* 2306 * Whew; do the mount, at last. 2307 */ 2308 if (trace > 1) { 2309 trace_prt(1, " mount %s %s (%s)\n", mnttabtext, mntpnt, mopts); 2310 } 2311 2312 /* 2313 * If no action list pointer then do the mount, otherwise 2314 * build the actions list pointer with the mount information. 2315 * so the mount can be done in the kernel. 2316 */ 2317 if (alp == NULL) { 2318 if (mount(mnttabtext, mntpnt, flags | MS_DATA, fstype, 2319 head, sizeof (*head), mopts, MAX_MNTOPT_STR) < 0) { 2320 if (trace > 1) 2321 trace_prt(1, " Mount of %s on %s: %d\n", 2322 mnttabtext, mntpnt, errno); 2323 if (errno != EBUSY || verbose) 2324 syslog(LOG_ERR, 2325 "Mount of %s on %s: %m", mnttabtext, mntpnt); 2326 last_error = NFSERR_IO; 2327 goto out; 2328 } 2329 2330 last_error = NFS_OK; 2331 if (stat(mntpnt, &stbuf) == 0) { 2332 if (trace > 1) { 2333 trace_prt(1, " mount %s dev=%x rdev=%x OK\n", 2334 mnttabtext, stbuf.st_dev, stbuf.st_rdev); 2335 } 2336 } else { 2337 if (trace > 1) { 2338 trace_prt(1, " mount %s OK\n", mnttabtext); 2339 trace_prt(1, " stat of %s failed\n", mntpnt); 2340 } 2341 2342 } 2343 } else { 2344 alp->action.action = AUTOFS_MOUNT_RQ; 2345 alp->action.action_list_entry_u.mounta.spec = 2346 strdup(mnttabtext); 2347 alp->action.action_list_entry_u.mounta.dir = strdup(mntpnt); 2348 alp->action.action_list_entry_u.mounta.flags = 2349 flags | MS_DATA; 2350 alp->action.action_list_entry_u.mounta.fstype = 2351 strdup(fstype); 2352 alp->action.action_list_entry_u.mounta.dataptr = (char *)head; 2353 alp->action.action_list_entry_u.mounta.datalen = 2354 sizeof (*head); 2355 mntopts = malloc(strlen(mopts) + 1); 2356 strcpy(mntopts, mopts); 2357 mntopts[strlen(mopts)] = '\0'; 2358 alp->action.action_list_entry_u.mounta.optptr = mntopts; 2359 alp->action.action_list_entry_u.mounta.optlen = 2360 strlen(mntopts) + 1; 2361 last_error = NFS_OK; 2362 goto ret; 2363 } 2364 2365 out: 2366 argp = head; 2367 while (argp) { 2368 if (argp->pathconf) 2369 free(argp->pathconf); 2370 free_knconf(argp->knconf); 2371 netbuf_free(argp->addr); 2372 if (argp->syncaddr) 2373 netbuf_free(argp->syncaddr); 2374 if (argp->netname) { 2375 free(argp->netname); 2376 } 2377 if (argp->hostname) 2378 free(argp->hostname); 2379 nfs_free_secdata(argp->nfs_ext_u.nfs_extB.secdata); 2380 free(argp->fh); 2381 head = argp; 2382 argp = argp->nfs_ext_u.nfs_extB.next; 2383 free(head); 2384 } 2385 ret: 2386 if (nfs_proto) 2387 free(nfs_proto); 2388 if (mnttabtext) 2389 free(mnttabtext); 2390 2391 for (mfs = mfs_in; mfs; mfs = mfs->mfs_next) { 2392 2393 if (mfs->mfs_flags & MFS_ALLOC_DIR) { 2394 free(mfs->mfs_dir); 2395 mfs->mfs_dir = NULL; 2396 mfs->mfs_flags &= ~MFS_ALLOC_DIR; 2397 } 2398 2399 if (mfs->mfs_args != NULL && alp == NULL) { 2400 free(mfs->mfs_args); 2401 mfs->mfs_args = NULL; 2402 } 2403 2404 if (mfs->mfs_nconf != NULL) { 2405 freenetconfigent(mfs->mfs_nconf); 2406 mfs->mfs_nconf = NULL; 2407 } 2408 } 2409 2410 return (last_error); 2411 } 2412 2413 /* 2414 * get_pathconf(cl, path, fsname, pcnf, cretries) 2415 * ugliness that requires that ppathcnf and pathcnf stay consistent 2416 * cretries is a copy of retries used to determine when to syslog 2417 * on retry situations. 2418 */ 2419 static int 2420 get_pathconf(CLIENT *cl, char *path, char *fsname, struct pathcnf **pcnf, 2421 int cretries) 2422 { 2423 struct ppathcnf *p = NULL; 2424 enum clnt_stat rpc_stat; 2425 struct timeval timeout; 2426 2427 p = (struct ppathcnf *)malloc(sizeof (struct ppathcnf)); 2428 if (p == NULL) { 2429 syslog(LOG_ERR, "get_pathconf: Out of memory"); 2430 return (RET_ERR); 2431 } 2432 memset((caddr_t)p, 0, sizeof (struct ppathcnf)); 2433 2434 timeout.tv_sec = 10; 2435 timeout.tv_usec = 0; 2436 rpc_stat = clnt_call(cl, MOUNTPROC_PATHCONF, 2437 xdr_dirpath, (caddr_t)&path, xdr_ppathcnf, (caddr_t)p, timeout); 2438 if (rpc_stat != RPC_SUCCESS) { 2439 if (cretries-- <= 0) { 2440 syslog(LOG_ERR, 2441 "get_pathconf: %s: server not responding: %s", 2442 fsname, clnt_sperror(cl, "")); 2443 } 2444 free(p); 2445 return (RET_RETRY); 2446 } 2447 if (_PC_ISSET(_PC_ERROR, p->pc_mask)) { 2448 syslog(LOG_ERR, "get_pathconf: no info for %s", fsname); 2449 free(p); 2450 return (RET_ERR); 2451 } 2452 *pcnf = (struct pathcnf *)p; 2453 return (RET_OK); 2454 } 2455 2456 struct knetconfig * 2457 get_knconf(nconf) 2458 struct netconfig *nconf; 2459 { 2460 struct stat stbuf; 2461 struct knetconfig *k; 2462 2463 if (stat(nconf->nc_device, &stbuf) < 0) { 2464 syslog(LOG_ERR, "get_knconf: stat %s: %m", nconf->nc_device); 2465 return (NULL); 2466 } 2467 k = (struct knetconfig *)malloc(sizeof (*k)); 2468 if (k == NULL) 2469 goto nomem; 2470 k->knc_semantics = nconf->nc_semantics; 2471 k->knc_protofmly = strdup(nconf->nc_protofmly); 2472 if (k->knc_protofmly == NULL) 2473 goto nomem; 2474 k->knc_proto = strdup(nconf->nc_proto); 2475 if (k->knc_proto == NULL) 2476 goto nomem; 2477 k->knc_rdev = stbuf.st_rdev; 2478 2479 return (k); 2480 2481 nomem: 2482 syslog(LOG_ERR, "get_knconf: no memory"); 2483 free_knconf(k); 2484 return (NULL); 2485 } 2486 2487 void 2488 free_knconf(k) 2489 struct knetconfig *k; 2490 { 2491 if (k == NULL) 2492 return; 2493 if (k->knc_protofmly) 2494 free(k->knc_protofmly); 2495 if (k->knc_proto) 2496 free(k->knc_proto); 2497 free(k); 2498 } 2499 2500 void 2501 netbuf_free(nb) 2502 struct netbuf *nb; 2503 { 2504 if (nb == NULL) 2505 return; 2506 if (nb->buf) 2507 free(nb->buf); 2508 free(nb); 2509 } 2510 2511 #define SMALL_HOSTNAME 20 2512 #define SMALL_PROTONAME 10 2513 #define SMALL_PROTOFMLYNAME 10 2514 2515 struct portmap_cache { 2516 int cache_prog; 2517 int cache_vers; 2518 time_t cache_time; 2519 char cache_small_hosts[SMALL_HOSTNAME + 1]; 2520 char *cache_hostname; 2521 char *cache_proto; 2522 char *cache_protofmly; 2523 char cache_small_protofmly[SMALL_PROTOFMLYNAME + 1]; 2524 char cache_small_proto[SMALL_PROTONAME + 1]; 2525 struct netbuf cache_srv_addr; 2526 struct portmap_cache *cache_prev, *cache_next; 2527 }; 2528 2529 rwlock_t portmap_cache_lock; 2530 static int portmap_cache_valid_time = 30; 2531 struct portmap_cache *portmap_cache_head, *portmap_cache_tail; 2532 2533 #ifdef MALLOC_DEBUG 2534 void 2535 portmap_cache_flush() 2536 { 2537 struct portmap_cache *next = NULL, *cp; 2538 2539 (void) rw_wrlock(&portmap_cache_lock); 2540 for (cp = portmap_cache_head; cp; cp = cp->cache_next) { 2541 if (cp->cache_hostname != NULL && 2542 cp->cache_hostname != 2543 cp->cache_small_hosts) 2544 free(cp->cache_hostname); 2545 if (cp->cache_proto != NULL && 2546 cp->cache_proto != 2547 cp->cache_small_proto) 2548 free(cp->cache_proto); 2549 if (cp->cache_srv_addr.buf != NULL) 2550 free(cp->cache_srv_addr.buf); 2551 next = cp->cache_next; 2552 free(cp); 2553 } 2554 portmap_cache_head = NULL; 2555 portmap_cache_tail = NULL; 2556 (void) rw_unlock(&portmap_cache_lock); 2557 } 2558 #endif 2559 2560 /* 2561 * Returns 1 if the entry is found in the cache, 0 otherwise. 2562 */ 2563 static int 2564 portmap_cache_lookup(hostname, prog, vers, nconf, addrp) 2565 char *hostname; 2566 rpcprog_t prog; 2567 rpcvers_t vers; 2568 struct netconfig *nconf; 2569 struct netbuf *addrp; 2570 { 2571 struct portmap_cache *cachep, *prev, *next = NULL, *cp; 2572 int retval = 0; 2573 2574 timenow = time(NULL); 2575 2576 (void) rw_rdlock(&portmap_cache_lock); 2577 2578 /* 2579 * Increment the portmap cache counters for # accesses and lookups 2580 * Use a smaller factor (100 vs 1000 for the host cache) since 2581 * initial analysis shows this cache is looked up 10% that of the 2582 * host cache. 2583 */ 2584 #ifdef CACHE_DEBUG 2585 portmap_cache_accesses++; 2586 portmap_cache_lookups++; 2587 if ((portmap_cache_lookups%100) == 0) 2588 trace_portmap_cache(); 2589 #endif /* CACHE_DEBUG */ 2590 2591 for (cachep = portmap_cache_head; cachep; 2592 cachep = cachep->cache_next) { 2593 if (timenow > cachep->cache_time) { 2594 /* 2595 * We stumbled across an entry in the cache which 2596 * has timed out. Free up all the entries that 2597 * were added before it, which will positionally 2598 * be after this entry. And adjust neighboring 2599 * pointers. 2600 * When we drop the lock and re-acquire it, we 2601 * need to start from the beginning. 2602 */ 2603 (void) rw_unlock(&portmap_cache_lock); 2604 (void) rw_wrlock(&portmap_cache_lock); 2605 for (cp = portmap_cache_head; 2606 cp && (cp->cache_time >= timenow); 2607 cp = cp->cache_next) 2608 ; 2609 if (cp == NULL) 2610 goto done; 2611 /* 2612 * Adjust the link of the predecessor. 2613 * Make the tail point to the new last entry. 2614 */ 2615 prev = cp->cache_prev; 2616 if (prev == NULL) { 2617 portmap_cache_head = NULL; 2618 portmap_cache_tail = NULL; 2619 } else { 2620 prev->cache_next = NULL; 2621 portmap_cache_tail = prev; 2622 } 2623 for (; cp; cp = next) { 2624 if (cp->cache_hostname != NULL && 2625 cp->cache_hostname != 2626 cp->cache_small_hosts) 2627 free(cp->cache_hostname); 2628 if (cp->cache_proto != NULL && 2629 cp->cache_proto != 2630 cp->cache_small_proto) 2631 free(cp->cache_proto); 2632 if (cp->cache_srv_addr.buf != NULL) 2633 free(cp->cache_srv_addr.buf); 2634 next = cp->cache_next; 2635 free(cp); 2636 } 2637 goto done; 2638 } 2639 if (cachep->cache_hostname == NULL || 2640 prog != cachep->cache_prog || vers != cachep->cache_vers || 2641 strcmp(nconf->nc_proto, cachep->cache_proto) != 0 || 2642 strcmp(nconf->nc_protofmly, cachep->cache_protofmly) != 0 || 2643 strcmp(hostname, cachep->cache_hostname) != 0) 2644 continue; 2645 /* 2646 * Cache Hit. 2647 */ 2648 #ifdef CACHE_DEBUG 2649 portmap_cache_hits++; /* up portmap cache hit counter */ 2650 #endif /* CACHE_DEBUG */ 2651 addrp->len = cachep->cache_srv_addr.len; 2652 memcpy(addrp->buf, cachep->cache_srv_addr.buf, addrp->len); 2653 retval = 1; 2654 break; 2655 } 2656 done: 2657 (void) rw_unlock(&portmap_cache_lock); 2658 return (retval); 2659 } 2660 2661 static void 2662 portmap_cache_enter(hostname, prog, vers, nconf, addrp) 2663 char *hostname; 2664 rpcprog_t prog; 2665 rpcvers_t vers; 2666 struct netconfig *nconf; 2667 struct netbuf *addrp; 2668 { 2669 struct portmap_cache *cachep; 2670 int protofmlylen; 2671 int protolen, hostnamelen; 2672 2673 timenow = time(NULL); 2674 2675 cachep = malloc(sizeof (struct portmap_cache)); 2676 if (cachep == NULL) 2677 return; 2678 memset((char *)cachep, 0, sizeof (*cachep)); 2679 2680 hostnamelen = strlen(hostname); 2681 if (hostnamelen <= SMALL_HOSTNAME) 2682 cachep->cache_hostname = cachep->cache_small_hosts; 2683 else { 2684 cachep->cache_hostname = malloc(hostnamelen + 1); 2685 if (cachep->cache_hostname == NULL) 2686 goto nomem; 2687 } 2688 strcpy(cachep->cache_hostname, hostname); 2689 protolen = strlen(nconf->nc_proto); 2690 if (protolen <= SMALL_PROTONAME) 2691 cachep->cache_proto = cachep->cache_small_proto; 2692 else { 2693 cachep->cache_proto = malloc(protolen + 1); 2694 if (cachep->cache_proto == NULL) 2695 goto nomem; 2696 } 2697 protofmlylen = strlen(nconf->nc_protofmly); 2698 if (protofmlylen <= SMALL_PROTOFMLYNAME) 2699 cachep->cache_protofmly = cachep->cache_small_protofmly; 2700 else { 2701 cachep->cache_protofmly = malloc(protofmlylen + 1); 2702 if (cachep->cache_protofmly == NULL) 2703 goto nomem; 2704 } 2705 2706 strcpy(cachep->cache_proto, nconf->nc_proto); 2707 cachep->cache_prog = prog; 2708 cachep->cache_vers = vers; 2709 cachep->cache_time = timenow + portmap_cache_valid_time; 2710 cachep->cache_srv_addr.len = addrp->len; 2711 cachep->cache_srv_addr.buf = malloc(addrp->len); 2712 if (cachep->cache_srv_addr.buf == NULL) 2713 goto nomem; 2714 memcpy(cachep->cache_srv_addr.buf, addrp->buf, addrp->maxlen); 2715 cachep->cache_prev = NULL; 2716 (void) rw_wrlock(&portmap_cache_lock); 2717 /* 2718 * There's a window in which we could have multiple threads making 2719 * the same cache entry. This can be avoided by walking the cache 2720 * once again here to check and see if there are duplicate entries 2721 * (after grabbing the write lock). This isn't fatal and I'm not 2722 * going to bother with this. 2723 */ 2724 #ifdef CACHE_DEBUG 2725 portmap_cache_accesses++; /* up portmap cache access counter */ 2726 #endif /* CACHE_DEBUG */ 2727 cachep->cache_next = portmap_cache_head; 2728 if (portmap_cache_head != NULL) 2729 portmap_cache_head->cache_prev = cachep; 2730 portmap_cache_head = cachep; 2731 (void) rw_unlock(&portmap_cache_lock); 2732 return; 2733 2734 nomem: 2735 syslog(LOG_ERR, "portmap_cache_enter: Memory allocation failed"); 2736 if (cachep->cache_srv_addr.buf) 2737 free(cachep->cache_srv_addr.buf); 2738 if (cachep->cache_proto && protolen > SMALL_PROTONAME) 2739 free(cachep->cache_proto); 2740 if (cachep->cache_hostname && hostnamelen > SMALL_HOSTNAME) 2741 free(cachep->cache_hostname); 2742 if (cachep->cache_protofmly && protofmlylen > SMALL_PROTOFMLYNAME) 2743 free(cachep->cache_protofmly); 2744 if (cachep) 2745 free(cachep); 2746 cachep = NULL; 2747 } 2748 2749 static int 2750 get_cached_srv_addr(char *hostname, rpcprog_t prog, rpcvers_t vers, 2751 struct netconfig *nconf, struct netbuf *addrp) 2752 { 2753 if (portmap_cache_lookup(hostname, prog, vers, nconf, addrp)) 2754 return (1); 2755 if (rpcb_getaddr(prog, vers, nconf, addrp, hostname) == 0) 2756 return (0); 2757 portmap_cache_enter(hostname, prog, vers, nconf, addrp); 2758 return (1); 2759 } 2760 2761 /* 2762 * Get the network address on "hostname" for program "prog" 2763 * with version "vers" by using the nconf configuration data 2764 * passed in. 2765 * 2766 * If the address of a netconfig pointer is null then 2767 * information is not sufficient and no netbuf will be returned. 2768 * 2769 * tinfo argument is for matching the get_the_addr() defined in 2770 * ../nfs/mount/mount.c 2771 */ 2772 void * 2773 get_the_stuff( 2774 enum type_of_stuff type_of_stuff, 2775 char *hostname, 2776 rpcprog_t prog, 2777 rpcprog_t vers, 2778 mfs_snego_t *mfssnego, 2779 struct netconfig *nconf, 2780 ushort_t port, 2781 struct t_info *tinfo, 2782 caddr_t *fhp, 2783 bool_t direct_to_server, 2784 char *fspath, 2785 enum clnt_stat *cstat) 2786 2787 { 2788 struct netbuf *nb = NULL; 2789 struct t_bind *tbind = NULL; 2790 int fd = -1; 2791 enum clnt_stat cs = RPC_TIMEDOUT; 2792 CLIENT *cl = NULL; 2793 struct timeval tv; 2794 AUTH *ah = NULL; 2795 AUTH *new_ah = NULL; 2796 struct snego_t snego; 2797 2798 if (nconf == NULL) { 2799 goto done; 2800 } 2801 2802 if (prog == NFS_PROGRAM && vers == NFS_V4) 2803 if (strncasecmp(nconf->nc_proto, NC_UDP, strlen(NC_UDP)) == 0) 2804 goto done; 2805 2806 if ((fd = t_open(nconf->nc_device, O_RDWR, tinfo)) < 0) { 2807 goto done; 2808 } 2809 2810 /* LINTED pointer alignment */ 2811 if ((tbind = (struct t_bind *)t_alloc(fd, T_BIND, T_ADDR)) 2812 == NULL) { 2813 goto done; 2814 } 2815 2816 if (direct_to_server == TRUE) { 2817 struct nd_hostserv hs; 2818 struct nd_addrlist *retaddrs; 2819 hs.h_host = hostname; 2820 2821 if (trace > 1) 2822 trace_prt(1, " get_the_stuff: %s call " 2823 "direct to server %s\n", 2824 type_of_stuff == SERVER_FH ? "pub fh" : 2825 type_of_stuff == SERVER_ADDR ? "get address" : 2826 type_of_stuff == SERVER_PING ? "ping" : 2827 "unknown", hostname); 2828 if (port == 0) 2829 hs.h_serv = "nfs"; 2830 else 2831 hs.h_serv = NULL; 2832 2833 if (netdir_getbyname(nconf, &hs, &retaddrs) != ND_OK) { 2834 goto done; 2835 } 2836 memcpy(tbind->addr.buf, retaddrs->n_addrs->buf, 2837 retaddrs->n_addrs->len); 2838 tbind->addr.len = retaddrs->n_addrs->len; 2839 netdir_free((void *)retaddrs, ND_ADDRLIST); 2840 if (port) { 2841 /* LINTED pointer alignment */ 2842 2843 if (strcmp(nconf->nc_protofmly, NC_INET) == NULL) 2844 ((struct sockaddr_in *) 2845 tbind->addr.buf)->sin_port = 2846 htons((ushort_t)port); 2847 else if (strcmp(nconf->nc_protofmly, NC_INET6) == NULL) 2848 ((struct sockaddr_in6 *) 2849 tbind->addr.buf)->sin6_port = 2850 htons((ushort_t)port); 2851 } 2852 2853 if (type_of_stuff == SERVER_FH) { 2854 if (netdir_options(nconf, ND_SET_RESERVEDPORT, fd, 2855 NULL) == -1) 2856 if (trace > 1) 2857 trace_prt(1, "\tget_the_stuff: " 2858 "ND_SET_RESERVEDPORT(%s) " 2859 "failed\n", hostname); 2860 } 2861 2862 cl = clnt_tli_create(fd, nconf, &tbind->addr, prog, 2863 vers, 0, 0); 2864 2865 if (trace > 1) 2866 trace_prt(1, " get_the_stuff: clnt_tli_create(%s) " 2867 "returned %p\n", hostname, cl); 2868 if (cl == NULL) 2869 goto done; 2870 #ifdef MALLOC_DEBUG 2871 add_alloc("CLNT_HANDLE", cl, 0, __FILE__, __LINE__); 2872 add_alloc("AUTH_HANDLE", cl->cl_auth, 0, 2873 __FILE__, __LINE__); 2874 #endif 2875 2876 switch (type_of_stuff) { 2877 case SERVER_FH: 2878 { 2879 enum snego_stat sec; 2880 2881 ah = authsys_create_default(); 2882 if (ah != NULL) { 2883 #ifdef MALLOC_DEBUG 2884 drop_alloc("AUTH_HANDLE", cl->cl_auth, 2885 __FILE__, __LINE__); 2886 #endif 2887 AUTH_DESTROY(cl->cl_auth); 2888 cl->cl_auth = ah; 2889 #ifdef MALLOC_DEBUG 2890 add_alloc("AUTH_HANDLE", cl->cl_auth, 0, 2891 __FILE__, __LINE__); 2892 #endif 2893 } 2894 2895 if (!mfssnego->snego_done && vers != NFS_V4) { 2896 /* 2897 * negotiate sec flavor. 2898 */ 2899 snego.cnt = 0; 2900 if ((sec = nfs_sec_nego(vers, cl, fspath, &snego)) == 2901 SNEGO_SUCCESS) { 2902 int jj; 2903 2904 /* 2905 * check if server supports the one 2906 * specified in the sec= option. 2907 */ 2908 if (mfssnego->sec_opt) { 2909 for (jj = 0; jj < snego.cnt; jj++) { 2910 if (snego.array[jj] == 2911 mfssnego->nfs_sec.sc_nfsnum) { 2912 mfssnego->snego_done = TRUE; 2913 break; 2914 } 2915 } 2916 } 2917 2918 /* 2919 * find a common sec flavor 2920 */ 2921 if (!mfssnego->snego_done) { 2922 for (jj = 0; jj < snego.cnt; jj++) { 2923 if (!nfs_getseconfig_bynumber( 2924 snego.array[jj], &mfssnego->nfs_sec)) { 2925 mfssnego->snego_done = TRUE; 2926 break; 2927 } 2928 } 2929 } 2930 if (!mfssnego->snego_done) 2931 return (NULL); 2932 2933 /* 2934 * Now that the flavor has been 2935 * negotiated, get the fh. 2936 * 2937 * First, create an auth handle using the negotiated 2938 * sec flavor in the next lookup to 2939 * fetch the filehandle. 2940 */ 2941 new_ah = nfs_create_ah(cl, hostname, 2942 &mfssnego->nfs_sec); 2943 if (new_ah == NULL) 2944 goto done; 2945 #ifdef MALLOC_DEBUG 2946 drop_alloc("AUTH_HANDLE", cl->cl_auth, 2947 __FILE__, __LINE__); 2948 #endif 2949 AUTH_DESTROY(cl->cl_auth); 2950 cl->cl_auth = new_ah; 2951 #ifdef MALLOC_DEBUG 2952 add_alloc("AUTH_HANDLE", cl->cl_auth, 0, 2953 __FILE__, __LINE__); 2954 #endif 2955 } else if (sec == SNEGO_ARRAY_TOO_SMALL || 2956 sec == SNEGO_FAILURE) { 2957 goto done; 2958 } 2959 /* 2960 * Note that if sec == SNEGO_DEF_VALID 2961 * the default sec flavor is acceptable. 2962 * Use it to get the filehandle. 2963 */ 2964 } 2965 } 2966 2967 switch (vers) { 2968 case NFS_VERSION: 2969 { 2970 wnl_diropargs arg; 2971 wnl_diropres *res; 2972 2973 memset((char *)&arg.dir, 0, sizeof (wnl_fh)); 2974 arg.name = fspath; 2975 res = wnlproc_lookup_2(&arg, cl); 2976 2977 if (res == NULL || res->status != NFS_OK) 2978 goto done; 2979 *fhp = malloc(sizeof (wnl_fh)); 2980 2981 if (*fhp == NULL) { 2982 syslog(LOG_ERR, "no memory\n"); 2983 goto done; 2984 } 2985 2986 memcpy((char *)*fhp, 2987 (char *)&res->wnl_diropres_u.wnl_diropres.file, 2988 sizeof (wnl_fh)); 2989 cs = RPC_SUCCESS; 2990 } 2991 break; 2992 case NFS_V3: 2993 { 2994 WNL_LOOKUP3args arg; 2995 WNL_LOOKUP3res *res; 2996 nfs_fh3 *fh3p; 2997 2998 memset((char *)&arg.what.dir, 0, sizeof (wnl_fh3)); 2999 arg.what.name = fspath; 3000 res = wnlproc3_lookup_3(&arg, cl); 3001 3002 if (res == NULL || res->status != NFS3_OK) 3003 goto done; 3004 3005 fh3p = (nfs_fh3 *)malloc(sizeof (*fh3p)); 3006 3007 if (fh3p == NULL) { 3008 syslog(LOG_ERR, "no memory\n"); 3009 CLNT_FREERES(cl, xdr_WNL_LOOKUP3res, 3010 (char *)res); 3011 goto done; 3012 } 3013 3014 fh3p->fh3_length = res-> 3015 WNL_LOOKUP3res_u.res_ok.object.data.data_len; 3016 memcpy(fh3p->fh3_u.data, res-> 3017 WNL_LOOKUP3res_u.res_ok.object.data.data_val, 3018 fh3p->fh3_length); 3019 3020 *fhp = (caddr_t)fh3p; 3021 3022 CLNT_FREERES(cl, xdr_WNL_LOOKUP3res, (char *)res); 3023 cs = RPC_SUCCESS; 3024 } 3025 break; 3026 case NFS_V4: 3027 *fhp = strdup(fspath); 3028 cs = RPC_SUCCESS; 3029 break; 3030 } 3031 break; 3032 case SERVER_ADDR: 3033 case SERVER_PING: 3034 tv.tv_sec = 10; 3035 tv.tv_usec = 0; 3036 cs = clnt_call(cl, NULLPROC, xdr_void, 0, 3037 xdr_void, 0, tv); 3038 if (trace > 1) 3039 trace_prt(1, 3040 "get_the_stuff: clnt_call(%s) " 3041 "returned %s\n", 3042 hostname, 3043 cs == RPC_SUCCESS ? "success" : 3044 "failure"); 3045 3046 if (cs != RPC_SUCCESS) 3047 goto done; 3048 break; 3049 } 3050 3051 } else if (type_of_stuff != SERVER_FH) { 3052 3053 if (type_of_stuff == SERVER_ADDR) { 3054 if (get_cached_srv_addr(hostname, prog, vers, nconf, 3055 &tbind->addr) == 0) 3056 goto done; 3057 } 3058 3059 if (port) { 3060 /* LINTED pointer alignment */ 3061 if (strcmp(nconf->nc_protofmly, NC_INET) == NULL) 3062 ((struct sockaddr_in *) 3063 tbind->addr.buf)->sin_port = 3064 htons((ushort_t)port); 3065 else if (strcmp(nconf->nc_protofmly, NC_INET6) == NULL) 3066 ((struct sockaddr_in6 *) 3067 tbind->addr.buf)->sin6_port = 3068 htons((ushort_t)port); 3069 cl = clnt_tli_create(fd, nconf, &tbind->addr, 3070 prog, vers, 0, 0); 3071 if (cl == NULL) 3072 goto done; 3073 #ifdef MALLOC_DEBUG 3074 add_alloc("CLNT_HANDLE", cl, 0, __FILE__, __LINE__); 3075 add_alloc("AUTH_HANDLE", cl->cl_auth, 0, 3076 __FILE__, __LINE__); 3077 #endif 3078 tv.tv_sec = 10; 3079 tv.tv_usec = 0; 3080 cs = clnt_call(cl, NULLPROC, xdr_void, 0, xdr_void, 3081 0, tv); 3082 if (cs != RPC_SUCCESS) 3083 goto done; 3084 } 3085 3086 } else { 3087 /* can't happen */ 3088 goto done; 3089 } 3090 3091 if (type_of_stuff != SERVER_PING) { 3092 3093 cs = RPC_SYSTEMERROR; 3094 3095 /* 3096 * Make a copy of the netbuf to return 3097 */ 3098 nb = (struct netbuf *)malloc(sizeof (struct netbuf)); 3099 if (nb == NULL) { 3100 syslog(LOG_ERR, "no memory\n"); 3101 goto done; 3102 } 3103 *nb = tbind->addr; 3104 nb->buf = (char *)malloc(nb->maxlen); 3105 if (nb->buf == NULL) { 3106 syslog(LOG_ERR, "no memory\n"); 3107 free(nb); 3108 nb = NULL; 3109 goto done; 3110 } 3111 (void) memcpy(nb->buf, tbind->addr.buf, tbind->addr.len); 3112 3113 cs = RPC_SUCCESS; 3114 } 3115 3116 done: 3117 if (cl != NULL) { 3118 if (ah != NULL) { 3119 #ifdef MALLOC_DEBUG 3120 drop_alloc("AUTH_HANDLE", cl->cl_auth, 3121 __FILE__, __LINE__); 3122 #endif 3123 AUTH_DESTROY(cl->cl_auth); 3124 cl->cl_auth = NULL; 3125 } 3126 #ifdef MALLOC_DEBUG 3127 drop_alloc("CLNT_HANDLE", cl, __FILE__, __LINE__); 3128 #endif 3129 clnt_destroy(cl); 3130 } 3131 3132 if (tbind) { 3133 t_free((char *)tbind, T_BIND); 3134 tbind = NULL; 3135 } 3136 3137 if (fd >= 0) 3138 (void) t_close(fd); 3139 3140 if (cstat != NULL) 3141 *cstat = cs; 3142 3143 return (nb); 3144 } 3145 3146 /* 3147 * Get a network address on "hostname" for program "prog" 3148 * with version "vers". If the port number is specified (non zero) 3149 * then try for a TCP/UDP transport and set the port number of the 3150 * resulting IP address. 3151 * 3152 * If the address of a netconfig pointer was passed and 3153 * if it's not null, use it as the netconfig otherwise 3154 * assign the address of the netconfig that was used to 3155 * establish contact with the service. 3156 * 3157 * tinfo argument is for matching the get_addr() defined in 3158 * ../nfs/mount/mount.c 3159 */ 3160 3161 static struct netbuf * 3162 get_addr(char *hostname, rpcprog_t prog, rpcvers_t vers, 3163 struct netconfig **nconfp, char *proto, ushort_t port, 3164 struct t_info *tinfo) 3165 3166 { 3167 enum clnt_stat cstat; 3168 3169 return (get_server_stuff(SERVER_ADDR, hostname, prog, vers, NULL, 3170 nconfp, proto, port, tinfo, NULL, FALSE, NULL, &cstat)); 3171 } 3172 3173 static struct netbuf * 3174 get_pubfh(char *hostname, rpcvers_t vers, mfs_snego_t *mfssnego, 3175 struct netconfig **nconfp, char *proto, ushort_t port, 3176 struct t_info *tinfo, caddr_t *fhp, bool_t get_pubfh, char *fspath) 3177 { 3178 enum clnt_stat cstat; 3179 3180 return (get_server_stuff(SERVER_FH, hostname, NFS_PROGRAM, vers, 3181 mfssnego, nconfp, proto, port, tinfo, fhp, get_pubfh, fspath, 3182 &cstat)); 3183 } 3184 3185 static enum clnt_stat 3186 get_ping(char *hostname, rpcprog_t prog, rpcvers_t vers, 3187 struct netconfig **nconfp, ushort_t port, bool_t direct_to_server) 3188 { 3189 enum clnt_stat cstat; 3190 3191 (void) get_server_stuff(SERVER_PING, hostname, prog, vers, NULL, nconfp, 3192 NULL, port, NULL, NULL, direct_to_server, NULL, &cstat); 3193 3194 return (cstat); 3195 } 3196 3197 void * 3198 get_server_stuff( 3199 enum type_of_stuff type_of_stuff, 3200 char *hostname, 3201 rpcprog_t prog, 3202 rpcvers_t vers, 3203 mfs_snego_t *mfssnego, 3204 struct netconfig **nconfp, 3205 char *proto, 3206 ushort_t port, /* may be zero */ 3207 struct t_info *tinfo, 3208 caddr_t *fhp, 3209 bool_t direct_to_server, 3210 char *fspath, 3211 enum clnt_stat *cstatp) 3212 { 3213 struct netbuf *nb = NULL; 3214 struct netconfig *nconf = NULL; 3215 NCONF_HANDLE *nc = NULL; 3216 int nthtry = FIRST_TRY; 3217 3218 if (nconfp && *nconfp) 3219 return (get_the_stuff(type_of_stuff, hostname, prog, vers, 3220 mfssnego, *nconfp, port, tinfo, fhp, direct_to_server, 3221 fspath, cstatp)); 3222 3223 3224 /* 3225 * No nconf passed in. 3226 * 3227 * Try to get a nconf from /etc/netconfig. 3228 * First choice is COTS, second is CLTS unless proto 3229 * is specified. When we retry, we reset the 3230 * netconfig list, so that we search the whole list 3231 * for the next choice. 3232 */ 3233 if ((nc = setnetpath()) == NULL) 3234 goto done; 3235 3236 /* 3237 * If proto is specified, then only search for the match, 3238 * otherwise try COTS first, if failed, then try CLTS. 3239 */ 3240 if (proto) { 3241 3242 while (nconf = getnetpath(nc)) { 3243 if (strcmp(nconf->nc_proto, proto)) 3244 continue; 3245 /* 3246 * If the port number is specified then TCP/UDP 3247 * is needed. Otherwise any cots/clts will do. 3248 */ 3249 if (port) { 3250 if ((strcmp(nconf->nc_protofmly, NC_INET) && 3251 strcmp(nconf->nc_protofmly, NC_INET6)) || 3252 (strcmp(nconf->nc_proto, NC_TCP) && 3253 strcmp(nconf->nc_proto, NC_UDP))) 3254 continue; 3255 } 3256 3257 nb = get_the_stuff(type_of_stuff, hostname, prog, vers, 3258 mfssnego, nconf, port, tinfo, fhp, 3259 direct_to_server, fspath, cstatp); 3260 3261 if (*cstatp == RPC_SUCCESS) 3262 break; 3263 3264 assert(nb == NULL); 3265 3266 } /* end of while */ 3267 3268 if (nconf == NULL) 3269 goto done; 3270 3271 } else { 3272 retry: 3273 while (nconf = getnetpath(nc)) { 3274 if (nconf->nc_flag & NC_VISIBLE) { 3275 if (nthtry == FIRST_TRY) { 3276 if ((nconf->nc_semantics == NC_TPI_COTS_ORD) || 3277 (nconf->nc_semantics == NC_TPI_COTS)) { 3278 if (port == 0) 3279 break; 3280 if ((strcmp(nconf->nc_protofmly, 3281 NC_INET) == 0 || 3282 strcmp(nconf->nc_protofmly, 3283 NC_INET6) == 0) && 3284 (strcmp(nconf->nc_proto, NC_TCP) == 0)) 3285 break; 3286 } 3287 } 3288 if (nthtry == SECOND_TRY) { 3289 if (nconf->nc_semantics == NC_TPI_CLTS) { 3290 if (port == 0) 3291 break; 3292 if ((strcmp(nconf->nc_protofmly, 3293 NC_INET) == 0 || 3294 strcmp(nconf->nc_protofmly, 3295 NC_INET6) == 0) && 3296 (strcmp(nconf->nc_proto, NC_UDP) == 0)) 3297 break; 3298 } 3299 } 3300 } 3301 } /* while */ 3302 if (nconf == NULL) { 3303 if (++nthtry <= MNT_PREF_LISTLEN) { 3304 endnetpath(nc); 3305 if ((nc = setnetpath()) == NULL) 3306 goto done; 3307 goto retry; 3308 } else 3309 goto done; 3310 } else { 3311 nb = get_the_stuff(type_of_stuff, hostname, prog, vers, 3312 mfssnego, nconf, port, tinfo, fhp, direct_to_server, 3313 fspath, cstatp); 3314 if (*cstatp != RPC_SUCCESS) 3315 /* 3316 * Continue the same search path in the 3317 * netconfig db until no more matched nconf 3318 * (nconf == NULL). 3319 */ 3320 goto retry; 3321 } 3322 } /* if !proto */ 3323 3324 /* 3325 * Got nconf and nb. Now dup the netconfig structure (nconf) 3326 * and return it thru nconfp. 3327 */ 3328 *nconfp = getnetconfigent(nconf->nc_netid); 3329 if (*nconfp == NULL) { 3330 syslog(LOG_ERR, "no memory\n"); 3331 free(nb); 3332 nb = NULL; 3333 } 3334 done: 3335 if (nc) 3336 endnetpath(nc); 3337 return (nb); 3338 } 3339 3340 3341 /* 3342 * Sends a null call to the remote host's (NFS program, versp). versp 3343 * may be "NULL" in which case the default maximum version is used. 3344 * Upon return, versp contains the maximum version supported iff versp!= NULL. 3345 */ 3346 enum clnt_stat 3347 pingnfs( 3348 char *hostpart, 3349 int attempts, 3350 rpcvers_t *versp, 3351 rpcvers_t versmin, 3352 ushort_t port, /* may be zeor */ 3353 bool_t usepub, 3354 char *path, 3355 char *proto) 3356 { 3357 CLIENT *cl = NULL; 3358 struct timeval rpc_to_new = {15, 0}; 3359 static struct timeval rpc_rtrans_new = {-1, -1}; 3360 enum clnt_stat clnt_stat; 3361 int i, j; 3362 rpcvers_t versmax; /* maximum version to try against server */ 3363 rpcvers_t outvers; /* version supported by host on last call */ 3364 rpcvers_t vers_to_try; /* to try different versions against host */ 3365 char *hostname = hostpart; 3366 struct netconfig *nconf; 3367 3368 if (path != NULL && strcmp(hostname, "nfs") == 0 && 3369 strncmp(path, "//", 2) == 0) { 3370 char *sport; 3371 3372 hostname = strdup(path+2); 3373 3374 if (hostname == NULL) 3375 return (RPC_SYSTEMERROR); 3376 3377 path = strchr(hostname, '/'); 3378 3379 /* 3380 * This cannot happen. If it does, give up 3381 * on the ping as this is obviously a corrupt 3382 * entry. 3383 */ 3384 if (path == NULL) { 3385 free(hostname); 3386 return (RPC_SUCCESS); 3387 } 3388 3389 /* 3390 * Probable end point of host string. 3391 */ 3392 *path = '\0'; 3393 3394 sport = strchr(hostname, ':'); 3395 3396 if (sport != NULL && sport < path) { 3397 3398 /* 3399 * Actual end point of host string. 3400 */ 3401 *sport = '\0'; 3402 port = htons((ushort_t)atoi(sport+1)); 3403 } 3404 3405 usepub = TRUE; 3406 } 3407 3408 /* Pick up the default versions and then set them appropriately */ 3409 if (versp) { 3410 versmax = *versp; 3411 /* use versmin passed in */ 3412 } else { 3413 read_default_nfs(); 3414 set_versrange(0, &versmax, &versmin); 3415 } 3416 3417 if (proto && 3418 strncasecmp(proto, NC_UDP, strlen(NC_UDP)) == 0 && 3419 versmax == NFS_V4) { 3420 if (versmin == NFS_V4) { 3421 if (versp) { 3422 *versp = versmax - 1; 3423 return (RPC_SUCCESS); 3424 } 3425 return (RPC_PROGUNAVAIL); 3426 } else { 3427 versmax--; 3428 } 3429 } 3430 3431 if (versp) 3432 *versp = versmax; 3433 3434 switch (cache_check(hostname, versp, proto)) { 3435 case GOODHOST: 3436 if (hostname != hostpart) 3437 free(hostname); 3438 return (RPC_SUCCESS); 3439 case DEADHOST: 3440 if (hostname != hostpart) 3441 free(hostname); 3442 return (RPC_TIMEDOUT); 3443 case NOHOST: 3444 default: 3445 break; 3446 } 3447 3448 /* 3449 * XXX The retransmission time rpcbrmttime is a global defined 3450 * in the rpc library (rpcb_clnt.c). We use (and like) the default 3451 * value of 15 sec in the rpc library. The code below is to protect 3452 * us in case it changes. This need not be done under a lock since 3453 * any # of threads entering this function will get the same 3454 * retransmission value. 3455 */ 3456 if (rpc_rtrans_new.tv_sec == -1 && rpc_rtrans_new.tv_usec == -1) { 3457 __rpc_control(CLCR_GET_RPCB_RMTTIME, (char *)&rpc_rtrans_new); 3458 if (rpc_rtrans_new.tv_sec != 15 && rpc_rtrans_new.tv_sec != 0) 3459 if (trace > 1) 3460 trace_prt(1, "RPC library rttimer changed\n"); 3461 } 3462 3463 /* 3464 * XXX Manipulate the total timeout to get the number of 3465 * desired retransmissions. This code is heavily dependant on 3466 * the RPC backoff mechanism in clnt_dg_call (clnt_dg.c). 3467 */ 3468 for (i = 0, j = rpc_rtrans_new.tv_sec; i < attempts-1; i++) { 3469 if (j < RPC_MAX_BACKOFF) 3470 j *= 2; 3471 else 3472 j = RPC_MAX_BACKOFF; 3473 rpc_to_new.tv_sec += j; 3474 } 3475 3476 vers_to_try = versmax; 3477 3478 /* 3479 * check the host's version within the timeout 3480 */ 3481 if (trace > 1) 3482 trace_prt(1, " ping: %s timeout=%ld request vers=%d min=%d\n", 3483 hostname, rpc_to_new.tv_sec, versmax, versmin); 3484 3485 if (usepub == FALSE) { 3486 do { 3487 /* 3488 * If NFSv4, then we do the same thing as is used 3489 * for public filehandles so that we avoid rpcbind 3490 */ 3491 if (vers_to_try == NFS_V4) { 3492 if (trace > 4) { 3493 trace_prt(1, " pingnfs: Trying ping via " 3494 "\"circuit_v\"\n"); 3495 } 3496 3497 if ((cl = clnt_create_service_timed(hostname, "nfs", 3498 NFS_PROGRAM, 3499 vers_to_try, 3500 port, "circuit_v", 3501 &rpc_to_new)) 3502 != NULL) { 3503 outvers = vers_to_try; 3504 break; 3505 } 3506 if (trace > 4) { 3507 trace_prt(1, " pingnfs: Can't ping via " 3508 "\"circuit_v\" %s: RPC error=%d\n", 3509 hostname, rpc_createerr.cf_stat); 3510 } 3511 3512 } else { 3513 if ((cl = clnt_create_vers_timed(hostname, NFS_PROGRAM, 3514 &outvers, versmin, vers_to_try, 3515 "datagram_v", &rpc_to_new)) 3516 != NULL) 3517 break; 3518 if (trace > 4) { 3519 trace_prt(1, " pingnfs: Can't ping via " 3520 "\"datagram_v\"%s: RPC error=%d\n", 3521 hostname, rpc_createerr.cf_stat); 3522 } 3523 if (rpc_createerr.cf_stat == RPC_UNKNOWNHOST || 3524 rpc_createerr.cf_stat == RPC_TIMEDOUT) 3525 break; 3526 if (rpc_createerr.cf_stat == RPC_PROGNOTREGISTERED) { 3527 if (trace > 4) { 3528 trace_prt(1, " pingnfs: Trying ping " 3529 "via \"circuit_v\"\n"); 3530 } 3531 if ((cl = clnt_create_vers_timed(hostname, 3532 NFS_PROGRAM, &outvers, 3533 versmin, vers_to_try, 3534 "circuit_v", &rpc_to_new)) != NULL) 3535 break; 3536 if (trace > 4) { 3537 trace_prt(1, " pingnfs: Can't ping " 3538 "via \"circuit_v\" %s: " 3539 "RPC error=%d\n", 3540 hostname, 3541 rpc_createerr.cf_stat); 3542 } 3543 } 3544 } 3545 3546 /* 3547 * backoff and return lower version to retry the ping. 3548 * XXX we should be more careful and handle 3549 * RPC_PROGVERSMISMATCH here, because that error is handled 3550 * in clnt_create_vers(). It's not done to stay in sync 3551 * with the nfs mount command. 3552 */ 3553 vers_to_try--; 3554 if (vers_to_try < versmin) 3555 break; 3556 if (versp != NULL) { /* recheck the cache */ 3557 *versp = vers_to_try; 3558 if (trace > 4) { 3559 trace_prt(1, 3560 " pingnfs: check cache: vers=%d\n", 3561 *versp); 3562 } 3563 switch (cache_check(hostname, versp, proto)) { 3564 case GOODHOST: 3565 if (hostname != hostpart) 3566 free(hostname); 3567 return (RPC_SUCCESS); 3568 case DEADHOST: 3569 if (hostname != hostpart) 3570 free(hostname); 3571 return (RPC_TIMEDOUT); 3572 case NOHOST: 3573 default: 3574 break; 3575 } 3576 } 3577 if (trace > 4) { 3578 trace_prt(1, " pingnfs: Try version=%d\n", 3579 vers_to_try); 3580 } 3581 } while (cl == NULL); 3582 3583 3584 if (cl == NULL) { 3585 if (verbose) 3586 syslog(LOG_ERR, "pingnfs: %s%s", 3587 hostname, clnt_spcreateerror("")); 3588 clnt_stat = rpc_createerr.cf_stat; 3589 } else { 3590 clnt_destroy(cl); 3591 clnt_stat = RPC_SUCCESS; 3592 } 3593 3594 } else { 3595 for (vers_to_try = versmax; vers_to_try >= versmin; 3596 vers_to_try--) { 3597 3598 nconf = NULL; 3599 3600 if (trace > 4) { 3601 trace_prt(1, " pingnfs: Try version=%d " 3602 "using get_ping()\n", vers_to_try); 3603 } 3604 3605 clnt_stat = get_ping(hostname, NFS_PROGRAM, 3606 vers_to_try, &nconf, port, TRUE); 3607 3608 if (nconf != NULL) 3609 freenetconfigent(nconf); 3610 3611 if (clnt_stat == RPC_SUCCESS) { 3612 outvers = vers_to_try; 3613 break; 3614 } 3615 } 3616 } 3617 3618 if (trace > 1) 3619 clnt_stat == RPC_SUCCESS ? 3620 trace_prt(1, " pingnfs OK: nfs version=%d\n", outvers): 3621 trace_prt(1, " pingnfs FAIL: can't get nfs version\n"); 3622 3623 if (clnt_stat == RPC_SUCCESS) { 3624 cache_enter(hostname, versmax, outvers, proto, GOODHOST); 3625 if (versp != NULL) 3626 *versp = outvers; 3627 } else 3628 cache_enter(hostname, versmax, versmax, proto, DEADHOST); 3629 3630 if (hostpart != hostname) 3631 free(hostname); 3632 3633 return (clnt_stat); 3634 } 3635 3636 #define MNTTYPE_LOFS "lofs" 3637 3638 int 3639 loopbackmount(fsname, dir, mntopts, overlay) 3640 char *fsname; /* Directory being mounted */ 3641 char *dir; /* Directory being mounted on */ 3642 char *mntopts; 3643 int overlay; 3644 { 3645 struct mnttab mnt; 3646 int flags = 0; 3647 char fstype[] = MNTTYPE_LOFS; 3648 int dirlen; 3649 struct stat st; 3650 char optbuf[MAX_MNTOPT_STR]; 3651 3652 dirlen = strlen(dir); 3653 if (dir[dirlen-1] == ' ') 3654 dirlen--; 3655 3656 if (dirlen == strlen(fsname) && 3657 strncmp(fsname, dir, dirlen) == 0) { 3658 syslog(LOG_ERR, 3659 "Mount of %s on %s would result in deadlock, aborted\n", 3660 fsname, dir); 3661 return (RET_ERR); 3662 } 3663 mnt.mnt_mntopts = mntopts; 3664 if (hasmntopt(&mnt, MNTOPT_RO) != NULL) 3665 flags |= MS_RDONLY; 3666 3667 (void) strlcpy(optbuf, mntopts, sizeof (optbuf)); 3668 3669 if (overlay) 3670 flags |= MS_OVERLAY; 3671 3672 if (trace > 1) 3673 trace_prt(1, 3674 " loopbackmount: fsname=%s, dir=%s, flags=%d\n", 3675 fsname, dir, flags); 3676 3677 if (is_system_labeled()) { 3678 if (create_homedir((const char *)fsname, 3679 (const char *)dir) == 0) { 3680 return (NFSERR_NOENT); 3681 } 3682 } 3683 3684 if (mount(fsname, dir, flags | MS_DATA | MS_OPTIONSTR, fstype, 3685 NULL, 0, optbuf, sizeof (optbuf)) < 0) { 3686 syslog(LOG_ERR, "Mount of %s on %s: %m", fsname, dir); 3687 return (RET_ERR); 3688 } 3689 3690 if (stat(dir, &st) == 0) { 3691 if (trace > 1) { 3692 trace_prt(1, 3693 " loopbackmount of %s on %s dev=%x rdev=%x OK\n", 3694 fsname, dir, st.st_dev, st.st_rdev); 3695 } 3696 } else { 3697 if (trace > 1) { 3698 trace_prt(1, 3699 " loopbackmount of %s on %s OK\n", fsname, dir); 3700 trace_prt(1, " stat of %s failed\n", dir); 3701 } 3702 } 3703 3704 return (0); 3705 } 3706 3707 /* 3708 * Look for the value of a numeric option of the form foo=x. If found, set 3709 * *valp to the value and return non-zero. If not found or the option is 3710 * malformed, return zero. 3711 */ 3712 3713 int 3714 nopt(mnt, opt, valp) 3715 struct mnttab *mnt; 3716 char *opt; 3717 int *valp; /* OUT */ 3718 { 3719 char *equal; 3720 char *str; 3721 3722 /* 3723 * We should never get a null pointer, but if we do, it's better to 3724 * ignore the option than to dump core. 3725 */ 3726 3727 if (valp == NULL) { 3728 syslog(LOG_DEBUG, "null pointer for %s option", opt); 3729 return (0); 3730 } 3731 3732 if (str = hasmntopt(mnt, opt)) { 3733 if (equal = strchr(str, '=')) { 3734 *valp = atoi(&equal[1]); 3735 return (1); 3736 } else { 3737 syslog(LOG_ERR, "Bad numeric option '%s'", str); 3738 } 3739 } 3740 return (0); 3741 } 3742 3743 int 3744 nfsunmount(mnt) 3745 struct mnttab *mnt; 3746 { 3747 struct timeval timeout; 3748 CLIENT *cl; 3749 enum clnt_stat rpc_stat; 3750 char *host, *path; 3751 struct replica *list; 3752 int i, count = 0; 3753 int isv4mount = is_v4_mount(mnt->mnt_mountp); 3754 3755 if (trace > 1) 3756 trace_prt(1, " nfsunmount: umount %s\n", mnt->mnt_mountp); 3757 3758 if (umount(mnt->mnt_mountp) < 0) { 3759 if (trace > 1) 3760 trace_prt(1, " nfsunmount: umount %s FAILED\n", 3761 mnt->mnt_mountp); 3762 if (errno) 3763 return (errno); 3764 } 3765 3766 /* 3767 * If this is a NFSv4 mount, the mount protocol was not used 3768 * so we just return. 3769 */ 3770 if (isv4mount) { 3771 if (trace > 1) 3772 trace_prt(1, " nfsunmount: umount %s OK\n", 3773 mnt->mnt_mountp); 3774 return (0); 3775 } 3776 3777 /* 3778 * If mounted with -o public, then no need to contact server 3779 * because mount protocol was not used. 3780 */ 3781 if (hasmntopt(mnt, MNTOPT_PUBLIC) != NULL) { 3782 return (0); 3783 } 3784 3785 /* 3786 * The rest of this code is advisory to the server. 3787 * If it fails return success anyway. 3788 */ 3789 3790 list = parse_replica(mnt->mnt_special, &count); 3791 if (!list) { 3792 if (count >= 0) 3793 syslog(LOG_ERR, 3794 "Memory allocation failed: %m"); 3795 return (ENOMEM); 3796 } 3797 3798 for (i = 0; i < count; i++) { 3799 3800 host = list[i].host; 3801 path = list[i].path; 3802 3803 /* 3804 * Skip file systems mounted using WebNFS, because mount 3805 * protocol was not used. 3806 */ 3807 if (strcmp(host, "nfs") == 0 && strncmp(path, "//", 2) == 0) 3808 continue; 3809 3810 cl = clnt_create(host, MOUNTPROG, MOUNTVERS, "datagram_v"); 3811 if (cl == NULL) 3812 break; 3813 #ifdef MALLOC_DEBUG 3814 add_alloc("CLNT_HANDLE", cl, 0, __FILE__, __LINE__); 3815 add_alloc("AUTH_HANDLE", cl->cl_auth, 0, 3816 __FILE__, __LINE__); 3817 #endif 3818 if (__clnt_bindresvport(cl) < 0) { 3819 if (verbose) 3820 syslog(LOG_ERR, "umount %s:%s: %s", 3821 host, path, 3822 "Couldn't bind to reserved port"); 3823 destroy_auth_client_handle(cl); 3824 continue; 3825 } 3826 #ifdef MALLOC_DEBUG 3827 drop_alloc("AUTH_HANDLE", cl->cl_auth, __FILE__, __LINE__); 3828 #endif 3829 AUTH_DESTROY(cl->cl_auth); 3830 if ((cl->cl_auth = authsys_create_default()) == NULL) { 3831 if (verbose) 3832 syslog(LOG_ERR, "umount %s:%s: %s", 3833 host, path, 3834 "Failed creating default auth handle"); 3835 destroy_auth_client_handle(cl); 3836 continue; 3837 } 3838 #ifdef MALLOC_DEBUG 3839 add_alloc("AUTH_HANDLE", cl->cl_auth, 0, __FILE__, __LINE__); 3840 #endif 3841 timeout.tv_usec = 0; 3842 timeout.tv_sec = 5; 3843 rpc_stat = clnt_call(cl, MOUNTPROC_UMNT, xdr_dirpath, 3844 (caddr_t)&path, xdr_void, (char *)NULL, timeout); 3845 if (verbose && rpc_stat != RPC_SUCCESS) 3846 syslog(LOG_ERR, "%s: %s", 3847 host, clnt_sperror(cl, "unmount")); 3848 destroy_auth_client_handle(cl); 3849 } 3850 3851 free_replica(list, count); 3852 3853 if (trace > 1) 3854 trace_prt(1, " nfsunmount: umount %s OK\n", mnt->mnt_mountp); 3855 3856 done: 3857 return (0); 3858 } 3859 3860 /* 3861 * Put a new entry in the cache chain by prepending it to the front. 3862 * If there isn't enough memory then just give up. 3863 */ 3864 static void 3865 cache_enter(host, reqvers, outvers, proto, state) 3866 char *host; 3867 rpcvers_t reqvers; 3868 rpcvers_t outvers; 3869 char *proto; 3870 int state; 3871 { 3872 struct cache_entry *entry; 3873 int cache_time = 30; /* sec */ 3874 3875 timenow = time(NULL); 3876 3877 entry = (struct cache_entry *)malloc(sizeof (struct cache_entry)); 3878 if (entry == NULL) 3879 return; 3880 (void) memset((caddr_t)entry, 0, sizeof (struct cache_entry)); 3881 entry->cache_host = strdup(host); 3882 if (entry->cache_host == NULL) { 3883 cache_free(entry); 3884 return; 3885 } 3886 entry->cache_reqvers = reqvers; 3887 entry->cache_outvers = outvers; 3888 entry->cache_proto = (proto == NULL ? NULL : strdup(proto)); 3889 entry->cache_state = state; 3890 entry->cache_time = timenow + cache_time; 3891 (void) rw_wrlock(&cache_lock); 3892 #ifdef CACHE_DEBUG 3893 host_cache_accesses++; /* up host cache access counter */ 3894 #endif /* CACHE DEBUG */ 3895 entry->cache_next = cache_head; 3896 cache_head = entry; 3897 (void) rw_unlock(&cache_lock); 3898 } 3899 3900 static int 3901 cache_check(host, versp, proto) 3902 char *host; 3903 rpcvers_t *versp; 3904 char *proto; 3905 { 3906 int state = NOHOST; 3907 struct cache_entry *ce, *prev; 3908 3909 timenow = time(NULL); 3910 3911 (void) rw_rdlock(&cache_lock); 3912 3913 #ifdef CACHE_DEBUG 3914 /* Increment the lookup and access counters for the host cache */ 3915 host_cache_accesses++; 3916 host_cache_lookups++; 3917 if ((host_cache_lookups%1000) == 0) 3918 trace_host_cache(); 3919 #endif /* CACHE DEBUG */ 3920 3921 for (ce = cache_head; ce; ce = ce->cache_next) { 3922 if (timenow > ce->cache_time) { 3923 (void) rw_unlock(&cache_lock); 3924 (void) rw_wrlock(&cache_lock); 3925 for (prev = NULL, ce = cache_head; ce; 3926 prev = ce, ce = ce->cache_next) { 3927 if (timenow > ce->cache_time) { 3928 cache_free(ce); 3929 if (prev) 3930 prev->cache_next = NULL; 3931 else 3932 cache_head = NULL; 3933 break; 3934 } 3935 } 3936 (void) rw_unlock(&cache_lock); 3937 return (state); 3938 } 3939 if (strcmp(host, ce->cache_host) != 0) 3940 continue; 3941 if ((proto == NULL && ce->cache_proto != NULL) || 3942 (proto != NULL && ce->cache_proto == NULL)) 3943 continue; 3944 if (proto != NULL && 3945 strcmp(proto, ce->cache_proto) != 0) 3946 continue; 3947 3948 if (versp == NULL || 3949 (versp != NULL && *versp == ce->cache_reqvers) || 3950 (versp != NULL && *versp == ce->cache_outvers)) { 3951 if (versp != NULL) 3952 *versp = ce->cache_outvers; 3953 state = ce->cache_state; 3954 3955 /* increment the host cache hit counters */ 3956 #ifdef CACHE_DEBUG 3957 if (state == GOODHOST) 3958 goodhost_cache_hits++; 3959 if (state == DEADHOST) 3960 deadhost_cache_hits++; 3961 #endif /* CACHE_DEBUG */ 3962 (void) rw_unlock(&cache_lock); 3963 return (state); 3964 } 3965 } 3966 (void) rw_unlock(&cache_lock); 3967 return (state); 3968 } 3969 3970 /* 3971 * Free a cache entry and all entries 3972 * further down the chain since they 3973 * will also be expired. 3974 */ 3975 static void 3976 cache_free(entry) 3977 struct cache_entry *entry; 3978 { 3979 struct cache_entry *ce, *next = NULL; 3980 3981 for (ce = entry; ce; ce = next) { 3982 if (ce->cache_host) 3983 free(ce->cache_host); 3984 if (ce->cache_proto) 3985 free(ce->cache_proto); 3986 next = ce->cache_next; 3987 free(ce); 3988 } 3989 } 3990 3991 #ifdef MALLOC_DEBUG 3992 void 3993 cache_flush() 3994 { 3995 (void) rw_wrlock(&cache_lock); 3996 cache_free(cache_head); 3997 cache_head = NULL; 3998 (void) rw_unlock(&cache_lock); 3999 } 4000 4001 void 4002 flush_caches() 4003 { 4004 mutex_lock(&cleanup_lock); 4005 cond_signal(&cleanup_start_cv); 4006 (void) cond_wait(&cleanup_done_cv, &cleanup_lock); 4007 mutex_unlock(&cleanup_lock); 4008 cache_flush(); 4009 portmap_cache_flush(); 4010 } 4011 #endif 4012 4013 /* 4014 * Returns 1, if port option is NFS_PORT or 4015 * nfsd is running on the port given 4016 * Returns 0, if both port is not NFS_PORT and nfsd is not 4017 * running on the port. 4018 */ 4019 4020 static int 4021 is_nfs_port(char *opts) 4022 { 4023 struct mnttab m; 4024 uint_t nfs_port = 0; 4025 struct servent sv; 4026 char buf[256]; 4027 int got_port; 4028 4029 m.mnt_mntopts = opts; 4030 4031 /* 4032 * Get port specified in options list, if any. 4033 */ 4034 got_port = nopt(&m, MNTOPT_PORT, (int *)&nfs_port); 4035 4036 /* 4037 * if no port specified or it is same as NFS_PORT return nfs 4038 * To use any other daemon the port number should be different 4039 */ 4040 if (!got_port || nfs_port == NFS_PORT) 4041 return (1); 4042 /* 4043 * If daemon is nfsd, return nfs 4044 */ 4045 if (getservbyport_r(nfs_port, NULL, &sv, buf, 256) == &sv && 4046 strcmp(sv.s_name, "nfsd") == 0) 4047 return (1); 4048 4049 /* 4050 * daemon is not nfs 4051 */ 4052 return (0); 4053 } 4054 4055 4056 /* 4057 * destroy_auth_client_handle(cl) 4058 * destroys the created client handle 4059 */ 4060 void 4061 destroy_auth_client_handle(CLIENT *cl) 4062 { 4063 if (cl) { 4064 if (cl->cl_auth) { 4065 #ifdef MALLOC_DEBUG 4066 drop_alloc("AUTH_HANDLE", cl->cl_auth, 4067 __FILE__, __LINE__); 4068 #endif 4069 AUTH_DESTROY(cl->cl_auth); 4070 cl->cl_auth = NULL; 4071 } 4072 #ifdef MALLOC_DEBUG 4073 drop_alloc("CLNT_HANDLE", cl, 4074 __FILE__, __LINE__); 4075 #endif 4076 clnt_destroy(cl); 4077 } 4078 } 4079 4080 4081 /* 4082 * Attempt to figure out which version of NFS to use in pingnfs(). If 4083 * the version number was specified (i.e., non-zero), then use it. 4084 * Otherwise, default to the compiled-in default or the default as set 4085 * by the /etc/default/nfs configuration (as read by read_default(). 4086 */ 4087 int 4088 set_versrange(rpcvers_t nfsvers, rpcvers_t *vers, rpcvers_t *versmin) 4089 { 4090 switch (nfsvers) { 4091 case 0: 4092 *vers = vers_max_default; 4093 *versmin = vers_min_default; 4094 break; 4095 case NFS_V4: 4096 *vers = NFS_V4; 4097 *versmin = NFS_V4; 4098 break; 4099 case NFS_V3: 4100 *vers = NFS_V3; 4101 *versmin = NFS_V3; 4102 break; 4103 case NFS_VERSION: 4104 *vers = NFS_VERSION; /* version 2 */ 4105 *versmin = NFS_VERSMIN; /* version 2 */ 4106 break; 4107 default: 4108 return (-1); 4109 } 4110 return (0); 4111 } 4112 4113 #ifdef CACHE_DEBUG 4114 /* 4115 * trace_portmap_cache() 4116 * traces the portmap cache values at desired points 4117 */ 4118 static void 4119 trace_portmap_cache() 4120 { 4121 syslog(LOG_ERR, "portmap_cache: accesses=%d lookups=%d hits=%d\n", 4122 portmap_cache_accesses, portmap_cache_lookups, 4123 portmap_cache_hits); 4124 } 4125 4126 /* 4127 * trace_host_cache() 4128 * traces the host cache values at desired points 4129 */ 4130 static void 4131 trace_host_cache() 4132 { 4133 syslog(LOG_ERR, 4134 "host_cache: accesses=%d lookups=%d deadhits=%d goodhits=%d\n", 4135 host_cache_accesses, host_cache_lookups, deadhost_cache_hits, 4136 goodhost_cache_hits); 4137 } 4138 #endif /* CACHE_DEBUG */ 4139 4140 /* 4141 * Read the /etc/default/nfs configuration file to determine if the 4142 * client has been configured for a new min/max for the NFS version to 4143 * use. 4144 */ 4145 4146 #define NFS_DEFAULT_CHECK 60 /* Seconds to check for nfs default changes */ 4147 4148 static void 4149 read_default_nfs(void) 4150 { 4151 static time_t lastread = 0; 4152 struct stat buf; 4153 char *defval; 4154 int errno; 4155 int tmp; 4156 4157 /* 4158 * Fail silently if we can't stat the default nfs config file 4159 */ 4160 if (stat(NFSADMIN, &buf)) 4161 return; 4162 4163 if (buf.st_mtime == lastread) 4164 return; 4165 4166 /* 4167 * Fail silently if error in opening the default nfs config file 4168 * We'll check back in NFS_DEFAULT_CHECK seconds 4169 */ 4170 if ((defopen(NFSADMIN)) == 0) { 4171 if ((defval = defread("NFS_CLIENT_VERSMIN=")) != NULL) { 4172 errno = 0; 4173 tmp = strtol(defval, (char **)NULL, 10); 4174 if (errno == 0) { 4175 vers_min_default = tmp; 4176 } 4177 } 4178 if ((defval = defread("NFS_CLIENT_VERSMAX=")) != NULL) { 4179 errno = 0; 4180 tmp = strtol(defval, (char **)NULL, 10); 4181 if (errno == 0) { 4182 vers_max_default = tmp; 4183 } 4184 } 4185 /* close defaults file */ 4186 defopen(NULL); 4187 4188 lastread = buf.st_mtime; 4189 4190 /* 4191 * Quick sanity check on the values picked up from the 4192 * defaults file. Make sure that a mistake wasn't 4193 * made that will confuse things later on. 4194 * If so, reset to compiled-in defaults 4195 */ 4196 if (vers_min_default > vers_max_default || 4197 vers_min_default < NFS_VERSMIN || 4198 vers_max_default > NFS_VERSMAX) { 4199 if (trace > 1) { 4200 trace_prt(1, 4201 " read_default: version minimum/maximum incorrectly configured\n"); 4202 trace_prt(1, 4203 " read_default: config is min=%d, max%d. Resetting to min=%d, max%d\n", 4204 vers_min_default, vers_max_default, 4205 NFS_VERSMIN_DEFAULT, 4206 NFS_VERSMAX_DEFAULT); 4207 } 4208 vers_min_default = NFS_VERSMIN_DEFAULT; 4209 vers_max_default = NFS_VERSMAX_DEFAULT; 4210 } 4211 } 4212 } 4213 4214 /* 4215 * Find the mnttab entry that corresponds to "name". 4216 * We're not sure what the name represents: either 4217 * a mountpoint name, or a special name (server:/path). 4218 * Return the last entry in the file that matches. 4219 */ 4220 static struct extmnttab * 4221 mnttab_find(dirname) 4222 char *dirname; 4223 { 4224 FILE *fp; 4225 struct extmnttab mnt; 4226 struct extmnttab *res = NULL; 4227 4228 fp = fopen(MNTTAB, "r"); 4229 if (fp == NULL) { 4230 if (trace > 1) 4231 trace_prt(1, " mnttab_find: unable to open mnttab\n"); 4232 return (NULL); 4233 } 4234 while (getextmntent(fp, &mnt, sizeof (struct extmnttab)) == 0) { 4235 if (strcmp(mnt.mnt_mountp, dirname) == 0 || 4236 strcmp(mnt.mnt_special, dirname) == 0) { 4237 if (res) 4238 fsfreemnttab(res); 4239 res = fsdupmnttab(&mnt); 4240 } 4241 } 4242 4243 resetmnttab(fp); 4244 fclose(fp); 4245 if (res == NULL) { 4246 if (trace > 1) 4247 trace_prt(1, " mnttab_find: unable to find %s\n", 4248 dirname); 4249 } 4250 return (res); 4251 } 4252 4253 /* 4254 * This function's behavior is taken from nfsstat. 4255 * Trying to determine what NFS version was used for the mount. 4256 */ 4257 static int 4258 is_v4_mount(char *mntpath) 4259 { 4260 kstat_ctl_t *kc = NULL; /* libkstat cookie */ 4261 kstat_t *ksp; 4262 ulong_t fsid; 4263 struct mntinfo_kstat mik; 4264 struct extmnttab *mntp; 4265 uint_t mnt_minor; 4266 4267 if ((mntp = mnttab_find(mntpath)) == NULL) 4268 return (FALSE); 4269 4270 /* save the minor number and free the struct so we don't forget */ 4271 mnt_minor = mntp->mnt_minor; 4272 fsfreemnttab(mntp); 4273 4274 if ((kc = kstat_open()) == NULL) 4275 return (FALSE); 4276 4277 for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) { 4278 if (ksp->ks_type != KSTAT_TYPE_RAW) 4279 continue; 4280 if (strcmp(ksp->ks_module, "nfs") != 0) 4281 continue; 4282 if (strcmp(ksp->ks_name, "mntinfo") != 0) 4283 continue; 4284 if (mnt_minor != ksp->ks_instance) 4285 continue; 4286 4287 if (kstat_read(kc, ksp, &mik) == -1) 4288 continue; 4289 4290 (void) kstat_close(kc); 4291 if (mik.mik_vers == 4) 4292 return (TRUE); 4293 else 4294 return (FALSE); 4295 } 4296 (void) kstat_close(kc); 4297 4298 return (FALSE); 4299 } 4300 4301 static int 4302 create_homedir(const char *src, const char *dst) { 4303 4304 struct stat stbuf; 4305 char *dst_username; 4306 struct passwd *pwd, pwds; 4307 char buf_pwd[NSS_BUFLEN_PASSWD]; 4308 int homedir_len; 4309 int dst_dir_len; 4310 int src_dir_len; 4311 4312 if (trace > 1) 4313 trace_prt(1, "entered create_homedir\n"); 4314 4315 if (stat(src, &stbuf) == 0) { 4316 if (trace > 1) 4317 trace_prt(1, "src exists\n"); 4318 return (1); 4319 } 4320 4321 dst_username = strrchr(dst, '/'); 4322 if (dst_username) { 4323 dst_username++; /* Skip over slash */ 4324 pwd = getpwnam_r(dst_username, &pwds, buf_pwd, 4325 sizeof (buf_pwd)); 4326 if (pwd == NULL) { 4327 return (0); 4328 } 4329 } else { 4330 return (0); 4331 } 4332 4333 homedir_len = strlen(pwd->pw_dir); 4334 dst_dir_len = strlen(dst) - homedir_len; 4335 src_dir_len = strlen(src) - homedir_len; 4336 4337 /* Check that the paths are in the same zone */ 4338 if (src_dir_len < dst_dir_len || 4339 (strncmp(dst, src, dst_dir_len) != 0)) { 4340 if (trace > 1) 4341 trace_prt(1, " paths don't match\n"); 4342 return (0); 4343 } 4344 /* Check that mountpoint is an auto_home entry */ 4345 if (dst_dir_len < 0 || 4346 (strcmp(pwd->pw_dir, dst + dst_dir_len) != 0)) { 4347 return (0); 4348 } 4349 4350 /* Check that source is an home directory entry */ 4351 if (src_dir_len < 0 || 4352 (strcmp(pwd->pw_dir, src + src_dir_len) != 0)) { 4353 if (trace > 1) 4354 trace_prt(1, " homedir (2) doesn't match %s\n", 4355 src+src_dir_len); 4356 return (0); 4357 } 4358 4359 if (mkdir(src, 4360 S_IRUSR | S_IWUSR | S_IXUSR | S_IXGRP | S_IXOTH) == -1) { 4361 if (trace > 1) { 4362 trace_prt(1, " Couldn't mkdir %s\n", src); 4363 } 4364 return (0); 4365 } 4366 4367 if (chown(src, pwd->pw_uid, pwd->pw_gid) == -1) { 4368 unlink(src); 4369 return (0); 4370 } 4371 4372 /* Created new home directory for the user */ 4373 return (1); 4374 } 4375 4376 void 4377 free_nfs_args(struct nfs_args *argp) 4378 { 4379 struct nfs_args *oldp; 4380 while (argp) { 4381 if (argp->pathconf) 4382 free(argp->pathconf); 4383 if (argp->knconf) 4384 free_knconf(argp->knconf); 4385 if (argp->addr) 4386 netbuf_free(argp->addr); 4387 if (argp->syncaddr) 4388 netbuf_free(argp->syncaddr); 4389 if (argp->netname) 4390 free(argp->netname); 4391 if (argp->hostname) 4392 free(argp->hostname); 4393 if (argp->nfs_ext_u.nfs_extB.secdata) 4394 nfs_free_secdata(argp->nfs_ext_u.nfs_extB.secdata); 4395 if (argp->fh) 4396 free(argp->fh); 4397 if (argp->nfs_ext_u.nfs_extA.secdata) { 4398 sec_data_t *sd; 4399 sd = argp->nfs_ext_u.nfs_extA.secdata; 4400 if (sd == NULL) 4401 break; 4402 switch (sd->rpcflavor) { 4403 case AUTH_NONE: 4404 case AUTH_UNIX: 4405 case AUTH_LOOPBACK: 4406 break; 4407 case AUTH_DES: 4408 { 4409 dh_k4_clntdata_t *dhk4; 4410 dhk4 = (dh_k4_clntdata_t *)sd->data; 4411 if (dhk4 == NULL) 4412 break; 4413 if (dhk4->syncaddr.buf) 4414 free(dhk4->syncaddr.buf); 4415 if (dhk4->knconf->knc_protofmly) 4416 free(dhk4->knconf->knc_protofmly); 4417 if (dhk4->knconf->knc_proto) 4418 free(dhk4->knconf->knc_proto); 4419 if (dhk4->knconf) 4420 free(dhk4->knconf); 4421 if (dhk4->netname) 4422 free(dhk4->netname); 4423 free(dhk4); 4424 break; 4425 } 4426 case RPCSEC_GSS: 4427 { 4428 gss_clntdata_t *gss; 4429 gss = (gss_clntdata_t *)sd->data; 4430 if (gss == NULL) 4431 break; 4432 if (gss->mechanism.elements) 4433 free(gss->mechanism.elements); 4434 free(gss); 4435 break; 4436 } 4437 } 4438 } 4439 oldp = argp; 4440 if (argp->nfs_args_ext == NFS_ARGS_EXTB) 4441 argp = argp->nfs_ext_u.nfs_extB.next; 4442 else 4443 argp = NULL; 4444 free(oldp); 4445 } 4446 } 4447