lib/libshare/libshare.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Copyright (c) 2011 Gunnar Beutner
  25  */
  26
  27 #include <stdio.h>
  28 #include <stdlib.h>
  29 #include <errno.h>
  30 #include <strings.h>
  31 #include <libintl.h>
  32 #include <sys/types.h>
  33 #include <sys/stat.h>
  34 #include <unistd.h>
  35 #include <libzfs.h>
  36 #include <libshare.h>
  37 #include "libshare_impl.h"
  38 #include "nfs.h"
  39 #include "smb.h"
  40
  41 static sa_share_impl_t find_share(sa_handle_impl_t handle,
  42     const char *sharepath);
  43 static sa_share_impl_t alloc_share(const char *sharepath);
  44 static void free_share(sa_share_impl_t share);
  45
  46 static void parse_sharetab(sa_handle_impl_t impl_handle);
  47 static int process_share(sa_handle_impl_t impl_handle,
  48     sa_share_impl_t impl_share, char *pathname, char *resource,
  49     char *fstype, char *options, char *description,
  50     char *dataset, boolean_t from_sharetab);
  51 static void update_sharetab(sa_handle_impl_t impl_handle);
  52
  53 static int update_zfs_share(sa_share_impl_t impl_handle, const char *proto);
  54 static int update_zfs_shares(sa_handle_impl_t impl_handle, const char *proto);
  55
  56 static int fstypes_count;
  57 static sa_fstype_t *fstypes;
  58
  59 sa_fstype_t *
  60 register_fstype(const char *name, const sa_share_ops_t *ops)
  61 {
  62         sa_fstype_t *fstype;
  63
  64         fstype = calloc(sizeof (sa_fstype_t), 1);
  65
  66         if (fstype == NULL)
  67                 return (NULL);
  68
  69         fstype->name = name;
  70         fstype->ops = ops;
  71         fstype->fsinfo_index = fstypes_count;
  72
  73         fstypes_count++;
  74
  75         fstype->next = fstypes;
  76         fstypes = fstype;
  77
  78         return (fstype);
  79 }
  80
  81 sa_handle_t
  82 sa_init(int init_service)
  83 {
  84         sa_handle_impl_t impl_handle;
  85
  86         impl_handle = calloc(sizeof (struct sa_handle_impl), 1);
  87
  88         if (impl_handle == NULL)
  89                 return (NULL);
  90
  91         impl_handle->zfs_libhandle = libzfs_init();
  92
  93         if (impl_handle->zfs_libhandle != NULL) {
  94                 libzfs_print_on_error(impl_handle->zfs_libhandle, B_TRUE);
  95         }
  96
  97         parse_sharetab(impl_handle);
  98         update_zfs_shares(impl_handle, NULL);
  99
 100         return ((sa_handle_t)impl_handle);
 101 }
 102
 103 __attribute__((constructor)) static void
 104 libshare_init(void)
 105 {
 106         libshare_nfs_init();
 107         libshare_smb_init();
 108
 109         /*
 110          * This bit causes /etc/dfs/sharetab to be updated before libzfs gets a
 111          * chance to read that file; this is necessary because the sharetab file
 112          * might be out of sync with the NFS kernel exports (e.g. due to reboots
 113          * or users manually removing shares)
 114          */
 115         sa_fini(sa_init(0));
 116 }
 117
 118 static void
 119 parse_sharetab(sa_handle_impl_t impl_handle) {
 120         FILE *fp;
 121         char line[512];
 122         char *eol, *pathname, *resource, *fstype, *options, *description;
 123
 124         fp = fopen("/etc/dfs/sharetab", "r");
 125
 126         if (fp == NULL)
 127                 return;
 128
 129         while (fgets(line, sizeof (line), fp) != NULL) {
 130                 eol = line + strlen(line) - 1;
 131
 132                 while (eol >= line) {
 133                         if (*eol != '\r' && *eol != '\n')
 134                                 break;
 135
 136                         *eol = '\0';
 137                         eol--;
 138                 }
 139
 140                 pathname = line;
 141
 142                 if ((resource = strchr(pathname, '\t')) == NULL)
 143                         continue;
 144
 145                 *resource = '\0';
 146                 resource++;
 147
 148                 if ((fstype = strchr(resource, '\t')) == NULL)
 149                         continue;
 150
 151                 *fstype = '\0';
 152                 fstype++;
 153
 154                 if ((options = strchr(fstype, '\t')) == NULL)
 155                         continue;
 156
 157                 *options = '\0';
 158                 options++;
 159
 160                 if ((description = strchr(fstype, '\t')) != NULL) {
 161                         *description = '\0';
 162                         description++;
 163                 }
 164
 165                 if (strcmp(resource, "-") == 0)
 166                         resource = NULL;
 167
 168                 (void) process_share(impl_handle, NULL, pathname, resource,
 169                     fstype, options, description, NULL, B_TRUE);
 170         }
 171
 172         fclose(fp);
 173 }
 174
 175 static void
 176 update_sharetab(sa_handle_impl_t impl_handle)
 177 {
 178         sa_share_impl_t impl_share;
 179         int temp_fd;
 180         FILE *temp_fp;
 181         char tempfile[] = "/etc/dfs/sharetab.XXXXXX";
 182         sa_fstype_t *fstype;
 183         const char *resource;
 184
 185         if (mkdir("/etc/dfs", 0755) < 0 && errno != EEXIST) {
 186                 return;
 187         }
 188
 189         temp_fd = mkstemp(tempfile);
 190
 191         if (temp_fd < 0)
 192                 return;
 193
 194         temp_fp = fdopen(temp_fd, "w");
 195
 196         if (temp_fp == NULL)
 197                 return;
 198
 199         impl_share = impl_handle->shares;
 200         while (impl_share != NULL) {
 201                 fstype = fstypes;
 202                 while (fstype != NULL) {
 203                         if (FSINFO(impl_share, fstype)->active &&
 204                             FSINFO(impl_share, fstype)->shareopts != NULL) {
 205                                 resource = FSINFO(impl_share, fstype)->resource;
 206
 207                                 if (resource == NULL)
 208                                         resource = "-";
 209
 210                                 fprintf(temp_fp, "%s\t%s\t%s\t%s\n",
 211                                     impl_share->sharepath, resource,
 212                                     fstype->name,
 213                                     FSINFO(impl_share, fstype)->shareopts);
 214                         }
 215
 216                         fstype = fstype->next;
 217                 }
 218
 219                 impl_share = impl_share->next;
 220         }
 221
 222         fflush(temp_fp);
 223         fsync(temp_fd);
 224         fclose(temp_fp);
 225
 226         rename(tempfile, "/etc/dfs/sharetab");
 227 }
 228
 229 typedef struct update_cookie_s {
 230         sa_handle_impl_t handle;
 231         const char *proto;
 232 } update_cookie_t;
 233
 234 static int
 235 update_zfs_shares_cb(zfs_handle_t *zhp, void *pcookie)
 236 {
 237         update_cookie_t *udata = (update_cookie_t *)pcookie;
 238         char mountpoint[ZFS_MAXPROPLEN];
 239         char shareopts[ZFS_MAXPROPLEN];
 240         char *dataset;
 241         zfs_type_t type = zfs_get_type(zhp);
 242
 243         if (type == ZFS_TYPE_FILESYSTEM &&
 244             zfs_iter_filesystems(zhp, update_zfs_shares_cb, pcookie) != 0) {
 245                 zfs_close(zhp);
 246                 return (1);
 247         }
 248
 249         if (type != ZFS_TYPE_FILESYSTEM) {
 250                 zfs_close(zhp);
 251                 return (0);
 252         }
 253
 254         if (zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
 255             sizeof (mountpoint), NULL, NULL, 0, B_FALSE) != 0) {
 256                 zfs_close(zhp);
 257                 return (0);
 258         }
 259
 260         dataset = (char *)zfs_get_name(zhp);
 261
 262         if (dataset == NULL) {
 263                 zfs_close(zhp);
 264                 return (0);
 265         }
 266
 267         if (!zfs_is_mounted(zhp, NULL)) {
 268                 zfs_close(zhp);
 269                 return (0);
 270         }
 271
 272         if ((udata->proto == NULL || strcmp(udata->proto, "nfs") == 0) &&
 273             zfs_prop_get(zhp, ZFS_PROP_SHARENFS, shareopts,
 274             sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0 &&
 275             strcmp(shareopts, "off") != 0) {
 276                 (void) process_share(udata->handle, NULL, mountpoint, NULL,
 277                     "nfs", shareopts, NULL, dataset, B_FALSE);
 278         }
 279
 280         if ((udata->proto == NULL || strcmp(udata->proto, "smb") == 0) &&
 281             zfs_prop_get(zhp, ZFS_PROP_SHARESMB, shareopts,
 282             sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0 &&
 283             strcmp(shareopts, "off") != 0) {
 284                 (void) process_share(udata->handle, NULL, mountpoint, NULL,
 285                     "smb", shareopts, NULL, dataset, B_FALSE);
 286         }
 287
 288         zfs_close(zhp);
 289
 290         return (0);
 291 }
 292
 293 static int
 294 update_zfs_share(sa_share_impl_t impl_share, const char *proto)
 295 {
 296         sa_handle_impl_t impl_handle = impl_share->handle;
 297         zfs_handle_t *zhp;
 298         update_cookie_t udata;
 299
 300         if (impl_handle->zfs_libhandle == NULL)
 301                         return (SA_SYSTEM_ERR);
 302
 303         assert(impl_share->dataset != NULL);
 304
 305         zhp = zfs_open(impl_share->handle->zfs_libhandle, impl_share->dataset,
 306             ZFS_TYPE_FILESYSTEM);
 307
 308         if (zhp == NULL)
 309                 return (SA_SYSTEM_ERR);
 310
 311         udata.handle = impl_handle;
 312         udata.proto = proto;
 313         (void) update_zfs_shares_cb(zhp, &udata);
 314
 315         return (SA_OK);
 316 }
 317
 318 static int
 319 update_zfs_shares(sa_handle_impl_t impl_handle, const char *proto)
 320 {
 321         update_cookie_t udata;
 322
 323         if (impl_handle->zfs_libhandle == NULL)
 324                 return (SA_SYSTEM_ERR);
 325
 326         udata.handle = impl_handle;
 327         udata.proto = proto;
 328         (void) zfs_iter_root(impl_handle->zfs_libhandle, update_zfs_shares_cb,
 329             &udata);
 330
 331         return (SA_OK);
 332 }
 333
 334 static int
 335 process_share(sa_handle_impl_t impl_handle, sa_share_impl_t impl_share,
 336     char *pathname, char *resource, char *proto,
 337     char *options, char *description, char *dataset,
 338     boolean_t from_sharetab)
 339 {
 340         struct stat statbuf;
 341         int rc;
 342         char *resource_dup = NULL, *dataset_dup = NULL;
 343         boolean_t new_share;
 344         sa_fstype_t *fstype;
 345
 346         new_share = B_FALSE;
 347
 348         if (impl_share == NULL)
 349                 impl_share = find_share(impl_handle, pathname);
 350
 351         if (impl_share == NULL) {
 352                 if (lstat(pathname, &statbuf) != 0 ||
 353                     !S_ISDIR(statbuf.st_mode))
 354                         return (SA_BAD_PATH);
 355
 356                 impl_share = alloc_share(pathname);
 357
 358                 if (impl_share == NULL) {
 359                         rc = SA_NO_MEMORY;
 360                         goto err;
 361                 }
 362
 363                 new_share = B_TRUE;
 364         }
 365
 366         if (dataset != NULL) {
 367                 dataset_dup = strdup(dataset);
 368
 369                 if (dataset_dup == NULL) {
 370                         rc = SA_NO_MEMORY;
 371                         goto err;
 372                 }
 373         }
 374
 375         free(impl_share->dataset);
 376         impl_share->dataset = dataset_dup;
 377
 378         rc = SA_INVALID_PROTOCOL;
 379
 380         fstype = fstypes;
 381         while (fstype != NULL) {
 382                 if (strcmp(fstype->name, proto) == 0) {
 383                         if (resource != NULL) {
 384                                 resource_dup = strdup(resource);
 385
 386                                 if (resource_dup == NULL) {
 387                                         rc = SA_NO_MEMORY;
 388                                         goto err;
 389                                 }
 390                         }
 391
 392                         free(FSINFO(impl_share, fstype)->resource);
 393                         FSINFO(impl_share, fstype)->resource = resource_dup;
 394
 395                         rc = fstype->ops->update_shareopts(impl_share,
 396                             resource, options);
 397
 398                         if (rc == SA_OK && from_sharetab)
 399                                 FSINFO(impl_share, fstype)->active = B_TRUE;
 400
 401                         break;
 402                 }
 403
 404                 fstype = fstype->next;
 405         }
 406
 407         if (rc != SA_OK)
 408                 goto err;
 409
 410         if (new_share) {
 411                 impl_share->handle = impl_handle;
 412
 413                 impl_share->next = impl_handle->shares;
 414                 impl_handle->shares = impl_share;
 415
 416         }
 417
 418 err:
 419         if (rc != SA_OK) {
 420                 if (new_share)
 421                         free_share(impl_share);
 422         }
 423
 424         return (rc);
 425 }
 426
 427 void
 428 sa_fini(sa_handle_t handle)
 429 {
 430         sa_handle_impl_t impl_handle = (sa_handle_impl_t)handle;
 431         sa_share_impl_t impl_share, next;
 432         sa_share_impl_t *pcurr;
 433
 434         if (impl_handle == NULL)
 435                 return;
 436
 437         /*
 438          * clean up shares which don't have a non-NULL dataset property,
 439          * which means they're in sharetab but we couldn't find their
 440          * ZFS dataset.
 441          */
 442         pcurr = &(impl_handle->shares);
 443         impl_share = *pcurr;
 444         while (impl_share != NULL) {
 445                 next = impl_share->next;
 446
 447                 if (impl_share->dataset == NULL) {
 448                         /* remove item from the linked list */
 449                         *pcurr = next;
 450
 451                         sa_disable_share(impl_share, NULL);
 452
 453                         free_share(impl_share);
 454                 } else {
 455                         pcurr = &(impl_share->next);
 456                 }
 457
 458                 impl_share = next;
 459         }
 460
 461         update_sharetab(impl_handle);
 462
 463         if (impl_handle->zfs_libhandle != NULL)
 464                 libzfs_fini(impl_handle->zfs_libhandle);
 465
 466         impl_share = impl_handle->shares;
 467         while (impl_share != NULL) {
 468                 next = impl_share->next;
 469                 free_share(impl_share);
 470                 impl_share = next;
 471         }
 472
 473         free(impl_handle);
 474 }
 475
 476 static sa_share_impl_t
 477 find_share(sa_handle_impl_t impl_handle, const char *sharepath)
 478 {
 479         sa_share_impl_t impl_share;
 480
 481         impl_share = impl_handle->shares;
 482         while (impl_share != NULL) {
 483                 if (strcmp(impl_share->sharepath, sharepath) == 0) {
 484                         break;
 485                 }
 486
 487                 impl_share = impl_share->next;
 488         }
 489
 490         return (impl_share);
 491 }
 492
 493 sa_share_t
 494 sa_find_share(sa_handle_t handle, char *sharepath)
 495 {
 496         return ((sa_share_t)find_share((sa_handle_impl_t)handle, sharepath));
 497 }
 498
 499 int
 500 sa_enable_share(sa_share_t share, char *protocol)
 501 {
 502         sa_share_impl_t impl_share = (sa_share_impl_t)share;
 503         int rc, ret;
 504         boolean_t found_protocol;
 505         sa_fstype_t *fstype;
 506
 507 #ifdef DEBUG
 508         fprintf(stderr, "sa_enable_share: share->sharepath=%s, protocol=%s\n",
 509                 impl_share->sharepath, protocol);
 510 #endif
 511
 512         assert(impl_share->handle != NULL);
 513
 514         ret = SA_OK;
 515         found_protocol = B_FALSE;
 516
 517         fstype = fstypes;
 518         while (fstype != NULL) {
 519                 if (protocol == NULL || strcmp(fstype->name, protocol) == 0) {
 520                         update_zfs_share(impl_share, fstype->name);
 521
 522                         rc = fstype->ops->enable_share(impl_share);
 523
 524                         if (rc != SA_OK)
 525                                 ret = rc;
 526                         else
 527                                 FSINFO(impl_share, fstype)->active = B_TRUE;
 528
 529                         found_protocol = B_TRUE;
 530                 }
 531
 532                 fstype = fstype->next;
 533         }
 534
 535         update_sharetab(impl_share->handle);
 536
 537         return (found_protocol ? ret : SA_INVALID_PROTOCOL);
 538 }
 539
 540 int
 541 sa_disable_share(sa_share_t share, char *protocol)
 542 {
 543         sa_share_impl_t impl_share = (sa_share_impl_t)share;
 544         int rc, ret;
 545         boolean_t found_protocol;
 546         sa_fstype_t *fstype;
 547
 548 #ifdef DEBUG
 549         fprintf(stderr, "sa_disable_share: share->sharepath=%s, protocol=%s\n",
 550                 impl_share->sharepath, protocol);
 551 #endif
 552
 553         ret = SA_OK;
 554         found_protocol = B_FALSE;
 555
 556         fstype = fstypes;
 557         while (fstype != NULL) {
 558                 if (protocol == NULL || strcmp(fstype->name, protocol) == 0) {
 559                         rc = fstype->ops->disable_share(impl_share);
 560
 561                         if (rc == SA_OK) {
 562                                 fstype->ops->clear_shareopts(impl_share);
 563
 564                                 FSINFO(impl_share, fstype)->active = B_FALSE;
 565                         } else
 566                                 ret = rc;
 567
 568                         found_protocol = B_TRUE;
 569                 }
 570
 571                 fstype = fstype->next;
 572         }
 573
 574         update_sharetab(impl_share->handle);
 575
 576         return (found_protocol ? ret : SA_INVALID_PROTOCOL);
 577 }
 578
 579 /*
 580  * sa_errorstr(err)
 581  *
 582  * convert an error value to an error string
 583  */
 584 char *
 585 sa_errorstr(int err)
 586 {
 587         static char errstr[32];
 588         char *ret = NULL;
 589
 590         switch (err) {
 591         case SA_OK:
 592                 ret = dgettext(TEXT_DOMAIN, "ok");
 593                 break;
 594         case SA_NO_SUCH_PATH:
 595                 ret = dgettext(TEXT_DOMAIN, "path doesn't exist");
 596                 break;
 597         case SA_NO_MEMORY:
 598                 ret = dgettext(TEXT_DOMAIN, "no memory");
 599                 break;
 600         case SA_DUPLICATE_NAME:
 601                 ret = dgettext(TEXT_DOMAIN, "name in use");
 602                 break;
 603         case SA_BAD_PATH:
 604                 ret = dgettext(TEXT_DOMAIN, "bad path");
 605                 break;
 606         case SA_NO_SUCH_GROUP:
 607                 ret = dgettext(TEXT_DOMAIN, "no such group");
 608                 break;
 609         case SA_CONFIG_ERR:
 610                 ret = dgettext(TEXT_DOMAIN, "configuration error");
 611                 break;
 612         case SA_SYSTEM_ERR:
 613                 ret = dgettext(TEXT_DOMAIN, "system error");
 614                 break;
 615         case SA_SYNTAX_ERR:
 616                 ret = dgettext(TEXT_DOMAIN, "syntax error");
 617                 break;
 618         case SA_NO_PERMISSION:
 619                 ret = dgettext(TEXT_DOMAIN, "no permission");
 620                 break;
 621         case SA_BUSY:
 622                 ret = dgettext(TEXT_DOMAIN, "busy");
 623                 break;
 624         case SA_NO_SUCH_PROP:
 625                 ret = dgettext(TEXT_DOMAIN, "no such property");
 626                 break;
 627         case SA_INVALID_NAME:
 628                 ret = dgettext(TEXT_DOMAIN, "invalid name");
 629                 break;
 630         case SA_INVALID_PROTOCOL:
 631                 ret = dgettext(TEXT_DOMAIN, "invalid protocol");
 632                 break;
 633         case SA_NOT_ALLOWED:
 634                 ret = dgettext(TEXT_DOMAIN, "operation not allowed");
 635                 break;
 636         case SA_BAD_VALUE:
 637                 ret = dgettext(TEXT_DOMAIN, "bad property value");
 638                 break;
 639         case SA_INVALID_SECURITY:
 640                 ret = dgettext(TEXT_DOMAIN, "invalid security type");
 641                 break;
 642         case SA_NO_SUCH_SECURITY:
 643                 ret = dgettext(TEXT_DOMAIN, "security type not found");
 644                 break;
 645         case SA_VALUE_CONFLICT:
 646                 ret = dgettext(TEXT_DOMAIN, "property value conflict");
 647                 break;
 648         case SA_NOT_IMPLEMENTED:
 649                 ret = dgettext(TEXT_DOMAIN, "not implemented");
 650                 break;
 651         case SA_INVALID_PATH:
 652                 ret = dgettext(TEXT_DOMAIN, "invalid path");
 653                 break;
 654         case SA_NOT_SUPPORTED:
 655                 ret = dgettext(TEXT_DOMAIN, "operation not supported");
 656                 break;
 657         case SA_PROP_SHARE_ONLY:
 658                 ret = dgettext(TEXT_DOMAIN, "property not valid for group");
 659                 break;
 660         case SA_NOT_SHARED:
 661                 ret = dgettext(TEXT_DOMAIN, "not shared");
 662                 break;
 663         case SA_NO_SUCH_RESOURCE:
 664                 ret = dgettext(TEXT_DOMAIN, "no such resource");
 665                 break;
 666         case SA_RESOURCE_REQUIRED:
 667                 ret = dgettext(TEXT_DOMAIN, "resource name required");
 668                 break;
 669         case SA_MULTIPLE_ERROR:
 670                 ret = dgettext(TEXT_DOMAIN, "errors from multiple protocols");
 671                 break;
 672         case SA_PATH_IS_SUBDIR:
 673                 ret = dgettext(TEXT_DOMAIN, "path is a subpath of share");
 674                 break;
 675         case SA_PATH_IS_PARENTDIR:
 676                 ret = dgettext(TEXT_DOMAIN, "path is parent of a share");
 677                 break;
 678         case SA_NO_SECTION:
 679                 ret = dgettext(TEXT_DOMAIN, "protocol requires a section");
 680                 break;
 681         case SA_NO_PROPERTIES:
 682                 ret = dgettext(TEXT_DOMAIN, "properties not found");
 683                 break;
 684         case SA_NO_SUCH_SECTION:
 685                 ret = dgettext(TEXT_DOMAIN, "section not found");
 686                 break;
 687         case SA_PASSWORD_ENC:
 688                 ret = dgettext(TEXT_DOMAIN, "passwords must be encrypted");
 689                 break;
 690         case SA_SHARE_EXISTS:
 691                 ret = dgettext(TEXT_DOMAIN, "path or file is already shared");
 692                 break;
 693         default:
 694                 (void) snprintf(errstr, sizeof (errstr),
 695                     dgettext(TEXT_DOMAIN, "unknown %d"), err);
 696                 ret = errstr;
 697         }
 698         return (ret);
 699 }
 700
 701 int
 702 sa_parse_legacy_options(sa_group_t group, char *options, char *proto)
 703 {
 704         sa_fstype_t *fstype;
 705
 706 #ifdef DEBUG
 707         fprintf(stderr, "sa_parse_legacy_options: options=%s, proto=%s\n",
 708                 options, proto);
 709 #endif
 710
 711         fstype = fstypes;
 712         while (fstype != NULL) {
 713                 if (strcmp(fstype->name, proto) != 0) {
 714                         fstype = fstype->next;
 715                         continue;
 716                 }
 717
 718                 return (fstype->ops->validate_shareopts(options));
 719         }
 720
 721         return (SA_INVALID_PROTOCOL);
 722 }
 723
 724 boolean_t
 725 sa_needs_refresh(sa_handle_t handle)
 726 {
 727         return (B_TRUE);
 728 }
 729
 730 libzfs_handle_t *
 731 sa_get_zfs_handle(sa_handle_t handle)
 732 {
 733         sa_handle_impl_t impl_handle = (sa_handle_impl_t)handle;
 734
 735         if (impl_handle == NULL)
 736                 return (NULL);
 737
 738         return (impl_handle->zfs_libhandle);
 739 }
 740
 741 static sa_share_impl_t
 742 alloc_share(const char *sharepath)
 743 {
 744         sa_share_impl_t impl_share;
 745
 746         impl_share = calloc(sizeof (struct sa_share_impl), 1);
 747
 748         if (impl_share == NULL)
 749                 return (NULL);
 750
 751         impl_share->sharepath = strdup(sharepath);
 752
 753         if (impl_share->sharepath == NULL) {
 754                 free(impl_share);
 755                 return (NULL);
 756         }
 757
 758         impl_share->fsinfo = calloc(sizeof (sa_share_fsinfo_t), fstypes_count);
 759
 760         if (impl_share->fsinfo == NULL) {
 761                 free(impl_share->sharepath);
 762                 free(impl_share);
 763                 return (NULL);
 764         }
 765
 766         return (impl_share);
 767 }
 768
 769 static void
 770 free_share(sa_share_impl_t impl_share) {
 771         sa_fstype_t *fstype;
 772
 773         fstype = fstypes;
 774         while (fstype != NULL) {
 775                 fstype->ops->clear_shareopts(impl_share);
 776
 777                 free(FSINFO(impl_share, fstype)->resource);
 778
 779                 fstype = fstype->next;
 780         }
 781
 782         free(impl_share->sharepath);
 783         free(impl_share->dataset);
 784         free(impl_share->fsinfo);
 785         free(impl_share);
 786 }
 787
 788 int
 789 sa_zfs_process_share(sa_handle_t handle, sa_group_t group, sa_share_t share,
 790     char *mountpoint, char *proto, zprop_source_t source, char *shareopts,
 791     char *sourcestr, char *dataset)
 792 {
 793         sa_handle_impl_t impl_handle = (sa_handle_impl_t)handle;
 794         sa_share_impl_t impl_share = (sa_share_impl_t)share;
 795
 796 #ifdef DEBUG
 797         fprintf(stderr, "sa_zfs_process_share: mountpoint=%s, proto=%s, "
 798             "shareopts=%s, sourcestr=%s, dataset=%s\n", mountpoint, proto,
 799             shareopts, sourcestr, dataset);
 800 #endif
 801
 802         return (process_share(impl_handle, impl_share, mountpoint, NULL,
 803             proto, shareopts, NULL, dataset, B_FALSE));
 804 }
 805
 806 void
 807 sa_update_sharetab_ts(sa_handle_t handle)
 808 {
 809         sa_handle_impl_t impl_handle = (sa_handle_impl_t)handle;
 810
 811         update_sharetab(impl_handle);
 812 }