cmd/zfs/zfs_main.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) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Copyright (c) 2011, 2014 by Delphix. All rights reserved.
  25  * Copyright 2012 Milan Jurik. All rights reserved.
  26  * Copyright (c) 2012, Joyent, Inc. All rights reserved.
  27  * Copyright (c) 2013 Steven Hartland.  All rights reserved.
  28  * Copyright 2013 Nexenta Systems, Inc.  All rights reserved.
  29  */
  30
  31 #include <assert.h>
  32 #include <ctype.h>
  33 #include <errno.h>
  34 #include <libgen.h>
  35 #include <libintl.h>
  36 #include <libuutil.h>
  37 #include <libnvpair.h>
  38 #include <locale.h>
  39 #include <stddef.h>
  40 #include <stdio.h>
  41 #include <stdlib.h>
  42 #include <strings.h>
  43 #include <unistd.h>
  44 #include <fcntl.h>
  45 #include <zone.h>
  46 #include <grp.h>
  47 #include <pwd.h>
  48 #include <signal.h>
  49 #include <sys/list.h>
  50 #include <sys/mkdev.h>
  51 #include <sys/mntent.h>
  52 #include <sys/mnttab.h>
  53 #include <sys/mount.h>
  54 #include <sys/stat.h>
  55 #include <sys/fs/zfs.h>
  56 #include <sys/types.h>
  57 #include <time.h>
  58
  59 #include <libzfs.h>
  60 #include <libzfs_core.h>
  61 #include <zfs_prop.h>
  62 #include <zfs_deleg.h>
  63 #include <libuutil.h>
  64 #include <aclutils.h>
  65 #include <directory.h>
  66
  67 #include "zfs_iter.h"
  68 #include "zfs_util.h"
  69 #include "zfs_comutil.h"
  70
  71 libzfs_handle_t *g_zfs;
  72
  73 static FILE *mnttab_file;
  74 static char history_str[HIS_MAX_RECORD_LEN];
  75 static boolean_t log_history = B_TRUE;
  76
  77 static int zfs_do_clone(int argc, char **argv);
  78 static int zfs_do_create(int argc, char **argv);
  79 static int zfs_do_destroy(int argc, char **argv);
  80 static int zfs_do_get(int argc, char **argv);
  81 static int zfs_do_inherit(int argc, char **argv);
  82 static int zfs_do_list(int argc, char **argv);
  83 static int zfs_do_mount(int argc, char **argv);
  84 static int zfs_do_rename(int argc, char **argv);
  85 static int zfs_do_rollback(int argc, char **argv);
  86 static int zfs_do_set(int argc, char **argv);
  87 static int zfs_do_upgrade(int argc, char **argv);
  88 static int zfs_do_snapshot(int argc, char **argv);
  89 static int zfs_do_unmount(int argc, char **argv);
  90 static int zfs_do_share(int argc, char **argv);
  91 static int zfs_do_unshare(int argc, char **argv);
  92 static int zfs_do_send(int argc, char **argv);
  93 static int zfs_do_receive(int argc, char **argv);
  94 static int zfs_do_promote(int argc, char **argv);
  95 static int zfs_do_userspace(int argc, char **argv);
  96 static int zfs_do_allow(int argc, char **argv);
  97 static int zfs_do_unallow(int argc, char **argv);
  98 static int zfs_do_hold(int argc, char **argv);
  99 static int zfs_do_holds(int argc, char **argv);
 100 static int zfs_do_release(int argc, char **argv);
 101 static int zfs_do_diff(int argc, char **argv);
 102 static int zfs_do_bookmark(int argc, char **argv);
 103
 104 /*
 105  * Enable a reasonable set of defaults for libumem debugging on DEBUG builds.
 106  */
 107
 108 #ifdef DEBUG
 109 const char *
 110 _umem_debug_init(void)
 111 {
 112         return ("default,verbose"); /* $UMEM_DEBUG setting */
 113 }
 114
 115 const char *
 116 _umem_logging_init(void)
 117 {
 118         return ("fail,contents"); /* $UMEM_LOGGING setting */
 119 }
 120 #endif
 121
 122 typedef enum {
 123         HELP_CLONE,
 124         HELP_CREATE,
 125         HELP_DESTROY,
 126         HELP_GET,
 127         HELP_INHERIT,
 128         HELP_UPGRADE,
 129         HELP_LIST,
 130         HELP_MOUNT,
 131         HELP_PROMOTE,
 132         HELP_RECEIVE,
 133         HELP_RENAME,
 134         HELP_ROLLBACK,
 135         HELP_SEND,
 136         HELP_SET,
 137         HELP_SHARE,
 138         HELP_SNAPSHOT,
 139         HELP_UNMOUNT,
 140         HELP_UNSHARE,
 141         HELP_ALLOW,
 142         HELP_UNALLOW,
 143         HELP_USERSPACE,
 144         HELP_GROUPSPACE,
 145         HELP_HOLD,
 146         HELP_HOLDS,
 147         HELP_RELEASE,
 148         HELP_DIFF,
 149         HELP_BOOKMARK,
 150 } zfs_help_t;
 151
 152 typedef struct zfs_command {
 153         const char      *name;
 154         int             (*func)(int argc, char **argv);
 155         zfs_help_t      usage;
 156 } zfs_command_t;
 157
 158 /*
 159  * Master command table.  Each ZFS command has a name, associated function, and
 160  * usage message.  The usage messages need to be internationalized, so we have
 161  * to have a function to return the usage message based on a command index.
 162  *
 163  * These commands are organized according to how they are displayed in the usage
 164  * message.  An empty command (one with a NULL name) indicates an empty line in
 165  * the generic usage message.
 166  */
 167 static zfs_command_t command_table[] = {
 168         { "create",     zfs_do_create,          HELP_CREATE             },
 169         { "destroy",    zfs_do_destroy,         HELP_DESTROY            },
 170         { NULL },
 171         { "snapshot",   zfs_do_snapshot,        HELP_SNAPSHOT           },
 172         { "rollback",   zfs_do_rollback,        HELP_ROLLBACK           },
 173         { "clone",      zfs_do_clone,           HELP_CLONE              },
 174         { "promote",    zfs_do_promote,         HELP_PROMOTE            },
 175         { "rename",     zfs_do_rename,          HELP_RENAME             },
 176         { "bookmark",   zfs_do_bookmark,        HELP_BOOKMARK           },
 177         { NULL },
 178         { "list",       zfs_do_list,            HELP_LIST               },
 179         { NULL },
 180         { "set",        zfs_do_set,             HELP_SET                },
 181         { "get",        zfs_do_get,             HELP_GET                },
 182         { "inherit",    zfs_do_inherit,         HELP_INHERIT            },
 183         { "upgrade",    zfs_do_upgrade,         HELP_UPGRADE            },
 184         { "userspace",  zfs_do_userspace,       HELP_USERSPACE          },
 185         { "groupspace", zfs_do_userspace,       HELP_GROUPSPACE         },
 186         { NULL },
 187         { "mount",      zfs_do_mount,           HELP_MOUNT              },
 188         { "unmount",    zfs_do_unmount,         HELP_UNMOUNT            },
 189         { "share",      zfs_do_share,           HELP_SHARE              },
 190         { "unshare",    zfs_do_unshare,         HELP_UNSHARE            },
 191         { NULL },
 192         { "send",       zfs_do_send,            HELP_SEND               },
 193         { "receive",    zfs_do_receive,         HELP_RECEIVE            },
 194         { NULL },
 195         { "allow",      zfs_do_allow,           HELP_ALLOW              },
 196         { NULL },
 197         { "unallow",    zfs_do_unallow,         HELP_UNALLOW            },
 198         { NULL },
 199         { "hold",       zfs_do_hold,            HELP_HOLD               },
 200         { "holds",      zfs_do_holds,           HELP_HOLDS              },
 201         { "release",    zfs_do_release,         HELP_RELEASE            },
 202         { "diff",       zfs_do_diff,            HELP_DIFF               },
 203 };
 204
 205 #define NCOMMAND        (sizeof (command_table) / sizeof (command_table[0]))
 206
 207 zfs_command_t *current_command;
 208
 209 static const char *
 210 get_usage(zfs_help_t idx)
 211 {
 212         switch (idx) {
 213         case HELP_CLONE:
 214                 return (gettext("\tclone [-p] [-o property=value] ... "
 215                     "<snapshot> <filesystem|volume>\n"));
 216         case HELP_CREATE:
 217                 return (gettext("\tcreate [-p] [-o property=value] ... "
 218                     "<filesystem>\n"
 219                     "\tcreate [-ps] [-b blocksize] [-o property=value] ... "
 220                     "-V <size> <volume>\n"));
 221         case HELP_DESTROY:
 222                 return (gettext("\tdestroy [-fnpRrv] <filesystem|volume>\n"
 223                     "\tdestroy [-dnpRrv] "
 224                     "<filesystem|volume>@<snap>[%<snap>][,...]\n"
 225                     "\tdestroy <filesystem|volume>#<bookmark>\n"));
 226         case HELP_GET:
 227                 return (gettext("\tget [-rHp] [-d max] "
 228                     "[-o \"all\" | field[,...]]\n"
 229                     "\t    [-t type[,...]] [-s source[,...]]\n"
 230                     "\t    <\"all\" | property[,...]> "
 231                     "[filesystem|volume|snapshot] ...\n"));
 232         case HELP_INHERIT:
 233                 return (gettext("\tinherit [-rS] <property> "
 234                     "<filesystem|volume|snapshot> ...\n"));
 235         case HELP_UPGRADE:
 236                 return (gettext("\tupgrade [-v]\n"
 237                     "\tupgrade [-r] [-V version] <-a | filesystem ...>\n"));
 238         case HELP_LIST:
 239                 return (gettext("\tlist [-Hp] [-r|-d max] [-o property[,...]] "
 240                     "[-s property]...\n\t    [-S property]... [-t type[,...]] "
 241                     "[filesystem|volume|snapshot] ...\n"));
 242         case HELP_MOUNT:
 243                 return (gettext("\tmount\n"
 244                     "\tmount [-vO] [-o opts] <-a | filesystem>\n"));
 245         case HELP_PROMOTE:
 246                 return (gettext("\tpromote <clone-filesystem>\n"));
 247         case HELP_RECEIVE:
 248                 return (gettext("\treceive [-vnFu] <filesystem|volume|"
 249                 "snapshot>\n"
 250                 "\treceive [-vnFu] [-d | -e] <filesystem>\n"));
 251         case HELP_RENAME:
 252                 return (gettext("\trename [-f] <filesystem|volume|snapshot> "
 253                     "<filesystem|volume|snapshot>\n"
 254                     "\trename [-f] -p <filesystem|volume> <filesystem|volume>\n"
 255                     "\trename -r <snapshot> <snapshot>\n"));
 256         case HELP_ROLLBACK:
 257                 return (gettext("\trollback [-rRf] <snapshot>\n"));
 258         case HELP_SEND:
 259                 return (gettext("\tsend [-DnPpRvLe] [-[iI] snapshot] "
 260                     "<snapshot>\n"
 261                     "\tsend [-Le] [-i snapshot|bookmark] "
 262                     "<filesystem|volume|snapshot>\n"));
 263         case HELP_SET:
 264                 return (gettext("\tset <property=value> "
 265                     "<filesystem|volume|snapshot> ...\n"));
 266         case HELP_SHARE:
 267                 return (gettext("\tshare <-a | filesystem>\n"));
 268         case HELP_SNAPSHOT:
 269                 return (gettext("\tsnapshot [-r] [-o property=value] ... "
 270                     "<filesystem|volume>@<snap> ...\n"));
 271         case HELP_UNMOUNT:
 272                 return (gettext("\tunmount [-f] "
 273                     "<-a | filesystem|mountpoint>\n"));
 274         case HELP_UNSHARE:
 275                 return (gettext("\tunshare "
 276                     "<-a | filesystem|mountpoint>\n"));
 277         case HELP_ALLOW:
 278                 return (gettext("\tallow <filesystem|volume>\n"
 279                     "\tallow [-ldug] "
 280                     "<\"everyone\"|user|group>[,...] <perm|@setname>[,...]\n"
 281                     "\t    <filesystem|volume>\n"
 282                     "\tallow [-ld] -e <perm|@setname>[,...] "
 283                     "<filesystem|volume>\n"
 284                     "\tallow -c <perm|@setname>[,...] <filesystem|volume>\n"
 285                     "\tallow -s @setname <perm|@setname>[,...] "
 286                     "<filesystem|volume>\n"));
 287         case HELP_UNALLOW:
 288                 return (gettext("\tunallow [-rldug] "
 289                     "<\"everyone\"|user|group>[,...]\n"
 290                     "\t    [<perm|@setname>[,...]] <filesystem|volume>\n"
 291                     "\tunallow [-rld] -e [<perm|@setname>[,...]] "
 292                     "<filesystem|volume>\n"
 293                     "\tunallow [-r] -c [<perm|@setname>[,...]] "
 294                     "<filesystem|volume>\n"
 295                     "\tunallow [-r] -s @setname [<perm|@setname>[,...]] "
 296                     "<filesystem|volume>\n"));
 297         case HELP_USERSPACE:
 298                 return (gettext("\tuserspace [-Hinp] [-o field[,...]] "
 299                     "[-s field] ...\n"
 300                     "\t    [-S field] ... [-t type[,...]] "
 301                     "<filesystem|snapshot>\n"));
 302         case HELP_GROUPSPACE:
 303                 return (gettext("\tgroupspace [-Hinp] [-o field[,...]] "
 304                     "[-s field] ...\n"
 305                     "\t    [-S field] ... [-t type[,...]] "
 306                     "<filesystem|snapshot>\n"));
 307         case HELP_HOLD:
 308                 return (gettext("\thold [-r] <tag> <snapshot> ...\n"));
 309         case HELP_HOLDS:
 310                 return (gettext("\tholds [-r] <snapshot> ...\n"));
 311         case HELP_RELEASE:
 312                 return (gettext("\trelease [-r] <tag> <snapshot> ...\n"));
 313         case HELP_DIFF:
 314                 return (gettext("\tdiff [-FHt] <snapshot> "
 315                     "[snapshot|filesystem]\n"));
 316         case HELP_BOOKMARK:
 317                 return (gettext("\tbookmark <snapshot> <bookmark>\n"));
 318         }
 319
 320         abort();
 321         /* NOTREACHED */
 322 }
 323
 324 void
 325 nomem(void)
 326 {
 327         (void) fprintf(stderr, gettext("internal error: out of memory\n"));
 328         exit(1);
 329 }
 330
 331 /*
 332  * Utility function to guarantee malloc() success.
 333  */
 334
 335 void *
 336 safe_malloc(size_t size)
 337 {
 338         void *data;
 339
 340         if ((data = calloc(1, size)) == NULL)
 341                 nomem();
 342
 343         return (data);
 344 }
 345
 346 static char *
 347 safe_strdup(char *str)
 348 {
 349         char *dupstr = strdup(str);
 350
 351         if (dupstr == NULL)
 352                 nomem();
 353
 354         return (dupstr);
 355 }
 356
 357 /*
 358  * Callback routine that will print out information for each of
 359  * the properties.
 360  */
 361 static int
 362 usage_prop_cb(int prop, void *cb)
 363 {
 364         FILE *fp = cb;
 365
 366         (void) fprintf(fp, "\t%-15s ", zfs_prop_to_name(prop));
 367
 368         if (zfs_prop_readonly(prop))
 369                 (void) fprintf(fp, " NO    ");
 370         else
 371                 (void) fprintf(fp, "YES    ");
 372
 373         if (zfs_prop_inheritable(prop))
 374                 (void) fprintf(fp, "  YES   ");
 375         else
 376                 (void) fprintf(fp, "   NO   ");
 377
 378         if (zfs_prop_values(prop) == NULL)
 379                 (void) fprintf(fp, "-\n");
 380         else
 381                 (void) fprintf(fp, "%s\n", zfs_prop_values(prop));
 382
 383         return (ZPROP_CONT);
 384 }
 385
 386 /*
 387  * Display usage message.  If we're inside a command, display only the usage for
 388  * that command.  Otherwise, iterate over the entire command table and display
 389  * a complete usage message.
 390  */
 391 static void
 392 usage(boolean_t requested)
 393 {
 394         int i;
 395         boolean_t show_properties = B_FALSE;
 396         FILE *fp = requested ? stdout : stderr;
 397
 398         if (current_command == NULL) {
 399
 400                 (void) fprintf(fp, gettext("usage: zfs command args ...\n"));
 401                 (void) fprintf(fp,
 402                     gettext("where 'command' is one of the following:\n\n"));
 403
 404                 for (i = 0; i < NCOMMAND; i++) {
 405                         if (command_table[i].name == NULL)
 406                                 (void) fprintf(fp, "\n");
 407                         else
 408                                 (void) fprintf(fp, "%s",
 409                                     get_usage(command_table[i].usage));
 410                 }
 411
 412                 (void) fprintf(fp, gettext("\nEach dataset is of the form: "
 413                     "pool/[dataset/]*dataset[@name]\n"));
 414         } else {
 415                 (void) fprintf(fp, gettext("usage:\n"));
 416                 (void) fprintf(fp, "%s", get_usage(current_command->usage));
 417         }
 418
 419         if (current_command != NULL &&
 420             (strcmp(current_command->name, "set") == 0 ||
 421             strcmp(current_command->name, "get") == 0 ||
 422             strcmp(current_command->name, "inherit") == 0 ||
 423             strcmp(current_command->name, "list") == 0))
 424                 show_properties = B_TRUE;
 425
 426         if (show_properties) {
 427                 (void) fprintf(fp,
 428                     gettext("\nThe following properties are supported:\n"));
 429
 430                 (void) fprintf(fp, "\n\t%-14s %s  %s   %s\n\n",
 431                     "PROPERTY", "EDIT", "INHERIT", "VALUES");
 432
 433                 /* Iterate over all properties */
 434                 (void) zprop_iter(usage_prop_cb, fp, B_FALSE, B_TRUE,
 435                     ZFS_TYPE_DATASET);
 436
 437                 (void) fprintf(fp, "\t%-15s ", "userused@...");
 438                 (void) fprintf(fp, " NO       NO   <size>\n");
 439                 (void) fprintf(fp, "\t%-15s ", "groupused@...");
 440                 (void) fprintf(fp, " NO       NO   <size>\n");
 441                 (void) fprintf(fp, "\t%-15s ", "userquota@...");
 442                 (void) fprintf(fp, "YES       NO   <size> | none\n");
 443                 (void) fprintf(fp, "\t%-15s ", "groupquota@...");
 444                 (void) fprintf(fp, "YES       NO   <size> | none\n");
 445                 (void) fprintf(fp, "\t%-15s ", "written@<snap>");
 446                 (void) fprintf(fp, " NO       NO   <size>\n");
 447
 448                 (void) fprintf(fp, gettext("\nSizes are specified in bytes "
 449                     "with standard units such as K, M, G, etc.\n"));
 450                 (void) fprintf(fp, gettext("\nUser-defined properties can "
 451                     "be specified by using a name containing a colon (:).\n"));
 452                 (void) fprintf(fp, gettext("\nThe {user|group}{used|quota}@ "
 453                     "properties must be appended with\n"
 454                     "a user or group specifier of one of these forms:\n"
 455                     "    POSIX name      (eg: \"matt\")\n"
 456                     "    POSIX id        (eg: \"126829\")\n"
 457                     "    SMB name@domain (eg: \"matt@sun\")\n"
 458                     "    SMB SID         (eg: \"S-1-234-567-89\")\n"));
 459         } else {
 460                 (void) fprintf(fp,
 461                     gettext("\nFor the property list, run: %s\n"),
 462                     "zfs set|get");
 463                 (void) fprintf(fp,
 464                     gettext("\nFor the delegated permission list, run: %s\n"),
 465                     "zfs allow|unallow");
 466         }
 467
 468         /*
 469          * See comments at end of main().
 470          */
 471         if (getenv("ZFS_ABORT") != NULL) {
 472                 (void) printf("dumping core by request\n");
 473                 abort();
 474         }
 475
 476         exit(requested ? 0 : 2);
 477 }
 478
 479 static int
 480 parseprop(nvlist_t *props)
 481 {
 482         char *propname = optarg;
 483         char *propval, *strval;
 484
 485         if ((propval = strchr(propname, '=')) == NULL) {
 486                 (void) fprintf(stderr, gettext("missing "
 487                     "'=' for -o option\n"));
 488                 return (-1);
 489         }
 490         *propval = '\0';
 491         propval++;
 492         if (nvlist_lookup_string(props, propname, &strval) == 0) {
 493                 (void) fprintf(stderr, gettext("property '%s' "
 494                     "specified multiple times\n"), propname);
 495                 return (-1);
 496         }
 497         if (nvlist_add_string(props, propname, propval) != 0)
 498                 nomem();
 499         return (0);
 500 }
 501
 502 static int
 503 parse_depth(char *opt, int *flags)
 504 {
 505         char *tmp;
 506         int depth;
 507
 508         depth = (int)strtol(opt, &tmp, 0);
 509         if (*tmp) {
 510                 (void) fprintf(stderr,
 511                     gettext("%s is not an integer\n"), optarg);
 512                 usage(B_FALSE);
 513         }
 514         if (depth < 0) {
 515                 (void) fprintf(stderr,
 516                     gettext("Depth can not be negative.\n"));
 517                 usage(B_FALSE);
 518         }
 519         *flags |= (ZFS_ITER_DEPTH_LIMIT|ZFS_ITER_RECURSE);
 520         return (depth);
 521 }
 522
 523 #define PROGRESS_DELAY 2                /* seconds */
 524
 525 static char *pt_reverse = "\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b";
 526 static time_t pt_begin;
 527 static char *pt_header = NULL;
 528 static boolean_t pt_shown;
 529
 530 static void
 531 start_progress_timer(void)
 532 {
 533         pt_begin = time(NULL) + PROGRESS_DELAY;
 534         pt_shown = B_FALSE;
 535 }
 536
 537 static void
 538 set_progress_header(char *header)
 539 {
 540         assert(pt_header == NULL);
 541         pt_header = safe_strdup(header);
 542         if (pt_shown) {
 543                 (void) printf("%s: ", header);
 544                 (void) fflush(stdout);
 545         }
 546 }
 547
 548 static void
 549 update_progress(char *update)
 550 {
 551         if (!pt_shown && time(NULL) > pt_begin) {
 552                 int len = strlen(update);
 553
 554                 (void) printf("%s: %s%*.*s", pt_header, update, len, len,
 555                     pt_reverse);
 556                 (void) fflush(stdout);
 557                 pt_shown = B_TRUE;
 558         } else if (pt_shown) {
 559                 int len = strlen(update);
 560
 561                 (void) printf("%s%*.*s", update, len, len, pt_reverse);
 562                 (void) fflush(stdout);
 563         }
 564 }
 565
 566 static void
 567 finish_progress(char *done)
 568 {
 569         if (pt_shown) {
 570                 (void) printf("%s\n", done);
 571                 (void) fflush(stdout);
 572         }
 573         free(pt_header);
 574         pt_header = NULL;
 575 }
 576
 577 /*
 578  * zfs clone [-p] [-o prop=value] ... <snap> <fs | vol>
 579  *
 580  * Given an existing dataset, create a writable copy whose initial contents
 581  * are the same as the source.  The newly created dataset maintains a
 582  * dependency on the original; the original cannot be destroyed so long as
 583  * the clone exists.
 584  *
 585  * The '-p' flag creates all the non-existing ancestors of the target first.
 586  */
 587 static int
 588 zfs_do_clone(int argc, char **argv)
 589 {
 590         zfs_handle_t *zhp = NULL;
 591         boolean_t parents = B_FALSE;
 592         nvlist_t *props;
 593         int ret = 0;
 594         int c;
 595
 596         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
 597                 nomem();
 598
 599         /* check options */
 600         while ((c = getopt(argc, argv, "o:p")) != -1) {
 601                 switch (c) {
 602                 case 'o':
 603                         if (parseprop(props))
 604                                 return (1);
 605                         break;
 606                 case 'p':
 607                         parents = B_TRUE;
 608                         break;
 609                 case '?':
 610                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
 611                             optopt);
 612                         goto usage;
 613                 }
 614         }
 615
 616         argc -= optind;
 617         argv += optind;
 618
 619         /* check number of arguments */
 620         if (argc < 1) {
 621                 (void) fprintf(stderr, gettext("missing source dataset "
 622                     "argument\n"));
 623                 goto usage;
 624         }
 625         if (argc < 2) {
 626                 (void) fprintf(stderr, gettext("missing target dataset "
 627                     "argument\n"));
 628                 goto usage;
 629         }
 630         if (argc > 2) {
 631                 (void) fprintf(stderr, gettext("too many arguments\n"));
 632                 goto usage;
 633         }
 634
 635         /* open the source dataset */
 636         if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
 637                 return (1);
 638
 639         if (parents && zfs_name_valid(argv[1], ZFS_TYPE_FILESYSTEM |
 640             ZFS_TYPE_VOLUME)) {
 641                 /*
 642                  * Now create the ancestors of the target dataset.  If the
 643                  * target already exists and '-p' option was used we should not
 644                  * complain.
 645                  */
 646                 if (zfs_dataset_exists(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM |
 647                     ZFS_TYPE_VOLUME))
 648                         return (0);
 649                 if (zfs_create_ancestors(g_zfs, argv[1]) != 0)
 650                         return (1);
 651         }
 652
 653         /* pass to libzfs */
 654         ret = zfs_clone(zhp, argv[1], props);
 655
 656         /* create the mountpoint if necessary */
 657         if (ret == 0) {
 658                 zfs_handle_t *clone;
 659
 660                 clone = zfs_open(g_zfs, argv[1], ZFS_TYPE_DATASET);
 661                 if (clone != NULL) {
 662                         if (zfs_get_type(clone) != ZFS_TYPE_VOLUME)
 663                                 if ((ret = zfs_mount(clone, NULL, 0)) == 0)
 664                                         ret = zfs_share(clone);
 665                         zfs_close(clone);
 666                 }
 667         }
 668
 669         zfs_close(zhp);
 670         nvlist_free(props);
 671
 672         return (!!ret);
 673
 674 usage:
 675         if (zhp)
 676                 zfs_close(zhp);
 677         nvlist_free(props);
 678         usage(B_FALSE);
 679         return (-1);
 680 }
 681
 682 /*
 683  * zfs create [-p] [-o prop=value] ... fs
 684  * zfs create [-ps] [-b blocksize] [-o prop=value] ... -V vol size
 685  *
 686  * Create a new dataset.  This command can be used to create filesystems
 687  * and volumes.  Snapshot creation is handled by 'zfs snapshot'.
 688  * For volumes, the user must specify a size to be used.
 689  *
 690  * The '-s' flag applies only to volumes, and indicates that we should not try
 691  * to set the reservation for this volume.  By default we set a reservation
 692  * equal to the size for any volume.  For pools with SPA_VERSION >=
 693  * SPA_VERSION_REFRESERVATION, we set a refreservation instead.
 694  *
 695  * The '-p' flag creates all the non-existing ancestors of the target first.
 696  */
 697 static int
 698 zfs_do_create(int argc, char **argv)
 699 {
 700         zfs_type_t type = ZFS_TYPE_FILESYSTEM;
 701         zfs_handle_t *zhp = NULL;
 702         uint64_t volsize;
 703         int c;
 704         boolean_t noreserve = B_FALSE;
 705         boolean_t bflag = B_FALSE;
 706         boolean_t parents = B_FALSE;
 707         int ret = 1;
 708         nvlist_t *props;
 709         uint64_t intval;
 710         int canmount = ZFS_CANMOUNT_OFF;
 711
 712         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
 713                 nomem();
 714
 715         /* check options */
 716         while ((c = getopt(argc, argv, ":V:b:so:p")) != -1) {
 717                 switch (c) {
 718                 case 'V':
 719                         type = ZFS_TYPE_VOLUME;
 720                         if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
 721                                 (void) fprintf(stderr, gettext("bad volume "
 722                                     "size '%s': %s\n"), optarg,
 723                                     libzfs_error_description(g_zfs));
 724                                 goto error;
 725                         }
 726
 727                         if (nvlist_add_uint64(props,
 728                             zfs_prop_to_name(ZFS_PROP_VOLSIZE), intval) != 0)
 729                                 nomem();
 730                         volsize = intval;
 731                         break;
 732                 case 'p':
 733                         parents = B_TRUE;
 734                         break;
 735                 case 'b':
 736                         bflag = B_TRUE;
 737                         if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
 738                                 (void) fprintf(stderr, gettext("bad volume "
 739                                     "block size '%s': %s\n"), optarg,
 740                                     libzfs_error_description(g_zfs));
 741                                 goto error;
 742                         }
 743
 744                         if (nvlist_add_uint64(props,
 745                             zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
 746                             intval) != 0)
 747                                 nomem();
 748                         break;
 749                 case 'o':
 750                         if (parseprop(props))
 751                                 goto error;
 752                         break;
 753                 case 's':
 754                         noreserve = B_TRUE;
 755                         break;
 756                 case ':':
 757                         (void) fprintf(stderr, gettext("missing size "
 758                             "argument\n"));
 759                         goto badusage;
 760                 case '?':
 761                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
 762                             optopt);
 763                         goto badusage;
 764                 }
 765         }
 766
 767         if ((bflag || noreserve) && type != ZFS_TYPE_VOLUME) {
 768                 (void) fprintf(stderr, gettext("'-s' and '-b' can only be "
 769                     "used when creating a volume\n"));
 770                 goto badusage;
 771         }
 772
 773         argc -= optind;
 774         argv += optind;
 775
 776         /* check number of arguments */
 777         if (argc == 0) {
 778                 (void) fprintf(stderr, gettext("missing %s argument\n"),
 779                     zfs_type_to_name(type));
 780                 goto badusage;
 781         }
 782         if (argc > 1) {
 783                 (void) fprintf(stderr, gettext("too many arguments\n"));
 784                 goto badusage;
 785         }
 786
 787         if (type == ZFS_TYPE_VOLUME && !noreserve) {
 788                 zpool_handle_t *zpool_handle;
 789                 nvlist_t *real_props;
 790                 uint64_t spa_version;
 791                 char *p;
 792                 zfs_prop_t resv_prop;
 793                 char *strval;
 794                 char msg[1024];
 795
 796                 if (p = strchr(argv[0], '/'))
 797                         *p = '\0';
 798                 zpool_handle = zpool_open(g_zfs, argv[0]);
 799                 if (p != NULL)
 800                         *p = '/';
 801                 if (zpool_handle == NULL)
 802                         goto error;
 803                 spa_version = zpool_get_prop_int(zpool_handle,
 804                     ZPOOL_PROP_VERSION, NULL);
 805                 zpool_close(zpool_handle);
 806                 if (spa_version >= SPA_VERSION_REFRESERVATION)
 807                         resv_prop = ZFS_PROP_REFRESERVATION;
 808                 else
 809                         resv_prop = ZFS_PROP_RESERVATION;
 810
 811                 (void) snprintf(msg, sizeof (msg),
 812                     gettext("cannot create '%s'"), argv[0]);
 813                 if (props && (real_props = zfs_valid_proplist(g_zfs, type,
 814                     props, 0, NULL, msg)) == NULL)
 815                         goto error;
 816
 817                 volsize = zvol_volsize_to_reservation(volsize, real_props);
 818                 nvlist_free(real_props);
 819
 820                 if (nvlist_lookup_string(props, zfs_prop_to_name(resv_prop),
 821                     &strval) != 0) {
 822                         if (nvlist_add_uint64(props,
 823                             zfs_prop_to_name(resv_prop), volsize) != 0) {
 824                                 nvlist_free(props);
 825                                 nomem();
 826                         }
 827                 }
 828         }
 829
 830         if (parents && zfs_name_valid(argv[0], type)) {
 831                 /*
 832                  * Now create the ancestors of target dataset.  If the target
 833                  * already exists and '-p' option was used we should not
 834                  * complain.
 835                  */
 836                 if (zfs_dataset_exists(g_zfs, argv[0], type)) {
 837                         ret = 0;
 838                         goto error;
 839                 }
 840                 if (zfs_create_ancestors(g_zfs, argv[0]) != 0)
 841                         goto error;
 842         }
 843
 844         /* pass to libzfs */
 845         if (zfs_create(g_zfs, argv[0], type, props) != 0)
 846                 goto error;
 847
 848         if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL)
 849                 goto error;
 850
 851         ret = 0;
 852         /*
 853          * if the user doesn't want the dataset automatically mounted,
 854          * then skip the mount/share step
 855          */
 856         if (zfs_prop_valid_for_type(ZFS_PROP_CANMOUNT, type))
 857                 canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT);
 858
 859         /*
 860          * Mount and/or share the new filesystem as appropriate.  We provide a
 861          * verbose error message to let the user know that their filesystem was
 862          * in fact created, even if we failed to mount or share it.
 863          */
 864         if (canmount == ZFS_CANMOUNT_ON) {
 865                 if (zfs_mount(zhp, NULL, 0) != 0) {
 866                         (void) fprintf(stderr, gettext("filesystem "
 867                             "successfully created, but not mounted\n"));
 868                         ret = 1;
 869                 } else if (zfs_share(zhp) != 0) {
 870                         (void) fprintf(stderr, gettext("filesystem "
 871                             "successfully created, but not shared\n"));
 872                         ret = 1;
 873                 }
 874         }
 875
 876 error:
 877         if (zhp)
 878                 zfs_close(zhp);
 879         nvlist_free(props);
 880         return (ret);
 881 badusage:
 882         nvlist_free(props);
 883         usage(B_FALSE);
 884         return (2);
 885 }
 886
 887 /*
 888  * zfs destroy [-rRf] <fs, vol>
 889  * zfs destroy [-rRd] <snap>
 890  *
 891  *      -r      Recursively destroy all children
 892  *      -R      Recursively destroy all dependents, including clones
 893  *      -f      Force unmounting of any dependents
 894  *      -d      If we can't destroy now, mark for deferred destruction
 895  *
 896  * Destroys the given dataset.  By default, it will unmount any filesystems,
 897  * and refuse to destroy a dataset that has any dependents.  A dependent can
 898  * either be a child, or a clone of a child.
 899  */
 900 typedef struct destroy_cbdata {
 901         boolean_t       cb_first;
 902         boolean_t       cb_force;
 903         boolean_t       cb_recurse;
 904         boolean_t       cb_error;
 905         boolean_t       cb_doclones;
 906         zfs_handle_t    *cb_target;
 907         boolean_t       cb_defer_destroy;
 908         boolean_t       cb_verbose;
 909         boolean_t       cb_parsable;
 910         boolean_t       cb_dryrun;
 911         nvlist_t        *cb_nvl;
 912         nvlist_t        *cb_batchedsnaps;
 913
 914         /* first snap in contiguous run */
 915         char            *cb_firstsnap;
 916         /* previous snap in contiguous run */
 917         char            *cb_prevsnap;
 918         int64_t         cb_snapused;
 919         char            *cb_snapspec;
 920         char            *cb_bookmark;
 921 } destroy_cbdata_t;
 922
 923 /*
 924  * Check for any dependents based on the '-r' or '-R' flags.
 925  */
 926 static int
 927 destroy_check_dependent(zfs_handle_t *zhp, void *data)
 928 {
 929         destroy_cbdata_t *cbp = data;
 930         const char *tname = zfs_get_name(cbp->cb_target);
 931         const char *name = zfs_get_name(zhp);
 932
 933         if (strncmp(tname, name, strlen(tname)) == 0 &&
 934             (name[strlen(tname)] == '/' || name[strlen(tname)] == '@')) {
 935                 /*
 936                  * This is a direct descendant, not a clone somewhere else in
 937                  * the hierarchy.
 938                  */
 939                 if (cbp->cb_recurse)
 940                         goto out;
 941
 942                 if (cbp->cb_first) {
 943                         (void) fprintf(stderr, gettext("cannot destroy '%s': "
 944                             "%s has children\n"),
 945                             zfs_get_name(cbp->cb_target),
 946                             zfs_type_to_name(zfs_get_type(cbp->cb_target)));
 947                         (void) fprintf(stderr, gettext("use '-r' to destroy "
 948                             "the following datasets:\n"));
 949                         cbp->cb_first = B_FALSE;
 950                         cbp->cb_error = B_TRUE;
 951                 }
 952
 953                 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
 954         } else {
 955                 /*
 956                  * This is a clone.  We only want to report this if the '-r'
 957                  * wasn't specified, or the target is a snapshot.
 958                  */
 959                 if (!cbp->cb_recurse &&
 960                     zfs_get_type(cbp->cb_target) != ZFS_TYPE_SNAPSHOT)
 961                         goto out;
 962
 963                 if (cbp->cb_first) {
 964                         (void) fprintf(stderr, gettext("cannot destroy '%s': "
 965                             "%s has dependent clones\n"),
 966                             zfs_get_name(cbp->cb_target),
 967                             zfs_type_to_name(zfs_get_type(cbp->cb_target)));
 968                         (void) fprintf(stderr, gettext("use '-R' to destroy "
 969                             "the following datasets:\n"));
 970                         cbp->cb_first = B_FALSE;
 971                         cbp->cb_error = B_TRUE;
 972                         cbp->cb_dryrun = B_TRUE;
 973                 }
 974
 975                 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
 976         }
 977
 978 out:
 979         zfs_close(zhp);
 980         return (0);
 981 }
 982
 983 static int
 984 destroy_callback(zfs_handle_t *zhp, void *data)
 985 {
 986         destroy_cbdata_t *cb = data;
 987         const char *name = zfs_get_name(zhp);
 988
 989         if (cb->cb_verbose) {
 990                 if (cb->cb_parsable) {
 991                         (void) printf("destroy\t%s\n", name);
 992                 } else if (cb->cb_dryrun) {
 993                         (void) printf(gettext("would destroy %s\n"),
 994                             name);
 995                 } else {
 996                         (void) printf(gettext("will destroy %s\n"),
 997                             name);
 998                 }
 999         }
1000
1001         /*
1002          * Ignore pools (which we've already flagged as an error before getting
1003          * here).
1004          */
1005         if (strchr(zfs_get_name(zhp), '/') == NULL &&
1006             zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
1007                 zfs_close(zhp);
1008                 return (0);
1009         }
1010         if (cb->cb_dryrun) {
1011                 zfs_close(zhp);
1012                 return (0);
1013         }
1014
1015         /*
1016          * We batch up all contiguous snapshots (even of different
1017          * filesystems) and destroy them with one ioctl.  We can't
1018          * simply do all snap deletions and then all fs deletions,
1019          * because we must delete a clone before its origin.
1020          */
1021         if (zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT) {
1022                 fnvlist_add_boolean(cb->cb_batchedsnaps, name);
1023         } else {
1024                 int error = zfs_destroy_snaps_nvl(g_zfs,
1025                     cb->cb_batchedsnaps, B_FALSE);
1026                 fnvlist_free(cb->cb_batchedsnaps);
1027                 cb->cb_batchedsnaps = fnvlist_alloc();
1028
1029                 if (error != 0 ||
1030                     zfs_unmount(zhp, NULL, cb->cb_force ? MS_FORCE : 0) != 0 ||
1031                     zfs_destroy(zhp, cb->cb_defer_destroy) != 0) {
1032                         zfs_close(zhp);
1033                         return (-1);
1034                 }
1035         }
1036
1037         zfs_close(zhp);
1038         return (0);
1039 }
1040
1041 static int
1042 destroy_print_cb(zfs_handle_t *zhp, void *arg)
1043 {
1044         destroy_cbdata_t *cb = arg;
1045         const char *name = zfs_get_name(zhp);
1046         int err = 0;
1047
1048         if (nvlist_exists(cb->cb_nvl, name)) {
1049                 if (cb->cb_firstsnap == NULL)
1050                         cb->cb_firstsnap = strdup(name);
1051                 if (cb->cb_prevsnap != NULL)
1052                         free(cb->cb_prevsnap);
1053                 /* this snap continues the current range */
1054                 cb->cb_prevsnap = strdup(name);
1055                 if (cb->cb_firstsnap == NULL || cb->cb_prevsnap == NULL)
1056                         nomem();
1057                 if (cb->cb_verbose) {
1058                         if (cb->cb_parsable) {
1059                                 (void) printf("destroy\t%s\n", name);
1060                         } else if (cb->cb_dryrun) {
1061                                 (void) printf(gettext("would destroy %s\n"),
1062                                     name);
1063                         } else {
1064                                 (void) printf(gettext("will destroy %s\n"),
1065                                     name);
1066                         }
1067                 }
1068         } else if (cb->cb_firstsnap != NULL) {
1069                 /* end of this range */
1070                 uint64_t used = 0;
1071                 err = lzc_snaprange_space(cb->cb_firstsnap,
1072                     cb->cb_prevsnap, &used);
1073                 cb->cb_snapused += used;
1074                 free(cb->cb_firstsnap);
1075                 cb->cb_firstsnap = NULL;
1076                 free(cb->cb_prevsnap);
1077                 cb->cb_prevsnap = NULL;
1078         }
1079         zfs_close(zhp);
1080         return (err);
1081 }
1082
1083 static int
1084 destroy_print_snapshots(zfs_handle_t *fs_zhp, destroy_cbdata_t *cb)
1085 {
1086         int err = 0;
1087         assert(cb->cb_firstsnap == NULL);
1088         assert(cb->cb_prevsnap == NULL);
1089         err = zfs_iter_snapshots_sorted(fs_zhp, destroy_print_cb, cb);
1090         if (cb->cb_firstsnap != NULL) {
1091                 uint64_t used = 0;
1092                 if (err == 0) {
1093                         err = lzc_snaprange_space(cb->cb_firstsnap,
1094                             cb->cb_prevsnap, &used);
1095                 }
1096                 cb->cb_snapused += used;
1097                 free(cb->cb_firstsnap);
1098                 cb->cb_firstsnap = NULL;
1099                 free(cb->cb_prevsnap);
1100                 cb->cb_prevsnap = NULL;
1101         }
1102         return (err);
1103 }
1104
1105 static int
1106 snapshot_to_nvl_cb(zfs_handle_t *zhp, void *arg)
1107 {
1108         destroy_cbdata_t *cb = arg;
1109         int err = 0;
1110
1111         /* Check for clones. */
1112         if (!cb->cb_doclones && !cb->cb_defer_destroy) {
1113                 cb->cb_target = zhp;
1114                 cb->cb_first = B_TRUE;
1115                 err = zfs_iter_dependents(zhp, B_TRUE,
1116                     destroy_check_dependent, cb);
1117         }
1118
1119         if (err == 0) {
1120                 if (nvlist_add_boolean(cb->cb_nvl, zfs_get_name(zhp)))
1121                         nomem();
1122         }
1123         zfs_close(zhp);
1124         return (err);
1125 }
1126
1127 static int
1128 gather_snapshots(zfs_handle_t *zhp, void *arg)
1129 {
1130         destroy_cbdata_t *cb = arg;
1131         int err = 0;
1132
1133         err = zfs_iter_snapspec(zhp, cb->cb_snapspec, snapshot_to_nvl_cb, cb);
1134         if (err == ENOENT)
1135                 err = 0;
1136         if (err != 0)
1137                 goto out;
1138
1139         if (cb->cb_verbose) {
1140                 err = destroy_print_snapshots(zhp, cb);
1141                 if (err != 0)
1142                         goto out;
1143         }
1144
1145         if (cb->cb_recurse)
1146                 err = zfs_iter_filesystems(zhp, gather_snapshots, cb);
1147
1148 out:
1149         zfs_close(zhp);
1150         return (err);
1151 }
1152
1153 static int
1154 destroy_clones(destroy_cbdata_t *cb)
1155 {
1156         nvpair_t *pair;
1157         for (pair = nvlist_next_nvpair(cb->cb_nvl, NULL);
1158             pair != NULL;
1159             pair = nvlist_next_nvpair(cb->cb_nvl, pair)) {
1160                 zfs_handle_t *zhp = zfs_open(g_zfs, nvpair_name(pair),
1161                     ZFS_TYPE_SNAPSHOT);
1162                 if (zhp != NULL) {
1163                         boolean_t defer = cb->cb_defer_destroy;
1164                         int err = 0;
1165
1166                         /*
1167                          * We can't defer destroy non-snapshots, so set it to
1168                          * false while destroying the clones.
1169                          */
1170                         cb->cb_defer_destroy = B_FALSE;
1171                         err = zfs_iter_dependents(zhp, B_FALSE,
1172                             destroy_callback, cb);
1173                         cb->cb_defer_destroy = defer;
1174                         zfs_close(zhp);
1175                         if (err != 0)
1176                                 return (err);
1177                 }
1178         }
1179         return (0);
1180 }
1181
1182 static int
1183 zfs_do_destroy(int argc, char **argv)
1184 {
1185         destroy_cbdata_t cb = { 0 };
1186         int rv = 0;
1187         int err = 0;
1188         int c;
1189         zfs_handle_t *zhp = NULL;
1190         char *at, *pound;
1191         zfs_type_t type = ZFS_TYPE_DATASET;
1192
1193         /* check options */
1194         while ((c = getopt(argc, argv, "vpndfrR")) != -1) {
1195                 switch (c) {
1196                 case 'v':
1197                         cb.cb_verbose = B_TRUE;
1198                         break;
1199                 case 'p':
1200                         cb.cb_verbose = B_TRUE;
1201                         cb.cb_parsable = B_TRUE;
1202                         break;
1203                 case 'n':
1204                         cb.cb_dryrun = B_TRUE;
1205                         break;
1206                 case 'd':
1207                         cb.cb_defer_destroy = B_TRUE;
1208                         type = ZFS_TYPE_SNAPSHOT;
1209                         break;
1210                 case 'f':
1211                         cb.cb_force = B_TRUE;
1212                         break;
1213                 case 'r':
1214                         cb.cb_recurse = B_TRUE;
1215                         break;
1216                 case 'R':
1217                         cb.cb_recurse = B_TRUE;
1218                         cb.cb_doclones = B_TRUE;
1219                         break;
1220                 case '?':
1221                 default:
1222                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1223                             optopt);
1224                         usage(B_FALSE);
1225                 }
1226         }
1227
1228         argc -= optind;
1229         argv += optind;
1230
1231         /* check number of arguments */
1232         if (argc == 0) {
1233                 (void) fprintf(stderr, gettext("missing dataset argument\n"));
1234                 usage(B_FALSE);
1235         }
1236         if (argc > 1) {
1237                 (void) fprintf(stderr, gettext("too many arguments\n"));
1238                 usage(B_FALSE);
1239         }
1240
1241         at = strchr(argv[0], '@');
1242         pound = strchr(argv[0], '#');
1243         if (at != NULL) {
1244
1245                 /* Build the list of snaps to destroy in cb_nvl. */
1246                 cb.cb_nvl = fnvlist_alloc();
1247
1248                 *at = '\0';
1249                 zhp = zfs_open(g_zfs, argv[0],
1250                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
1251                 if (zhp == NULL)
1252                         return (1);
1253
1254                 cb.cb_snapspec = at + 1;
1255                 if (gather_snapshots(zfs_handle_dup(zhp), &cb) != 0 ||
1256                     cb.cb_error) {
1257                         rv = 1;
1258                         goto out;
1259                 }
1260
1261                 if (nvlist_empty(cb.cb_nvl)) {
1262                         (void) fprintf(stderr, gettext("could not find any "
1263                             "snapshots to destroy; check snapshot names.\n"));
1264                         rv = 1;
1265                         goto out;
1266                 }
1267
1268                 if (cb.cb_verbose) {
1269                         char buf[16];
1270                         zfs_nicenum(cb.cb_snapused, buf, sizeof (buf));
1271                         if (cb.cb_parsable) {
1272                                 (void) printf("reclaim\t%llu\n",
1273                                     cb.cb_snapused);
1274                         } else if (cb.cb_dryrun) {
1275                                 (void) printf(gettext("would reclaim %s\n"),
1276                                     buf);
1277                         } else {
1278                                 (void) printf(gettext("will reclaim %s\n"),
1279                                     buf);
1280                         }
1281                 }
1282
1283                 if (!cb.cb_dryrun) {
1284                         if (cb.cb_doclones) {
1285                                 cb.cb_batchedsnaps = fnvlist_alloc();
1286                                 err = destroy_clones(&cb);
1287                                 if (err == 0) {
1288                                         err = zfs_destroy_snaps_nvl(g_zfs,
1289                                             cb.cb_batchedsnaps, B_FALSE);
1290                                 }
1291                                 if (err != 0) {
1292                                         rv = 1;
1293                                         goto out;
1294                                 }
1295                         }
1296                         if (err == 0) {
1297                                 err = zfs_destroy_snaps_nvl(g_zfs, cb.cb_nvl,
1298                                     cb.cb_defer_destroy);
1299                         }
1300                 }
1301
1302                 if (err != 0)
1303                         rv = 1;
1304         } else if (pound != NULL) {
1305                 int err;
1306                 nvlist_t *nvl;
1307
1308                 if (cb.cb_dryrun) {
1309                         (void) fprintf(stderr,
1310                             "dryrun is not supported with bookmark\n");
1311                         return (-1);
1312                 }
1313
1314                 if (cb.cb_defer_destroy) {
1315                         (void) fprintf(stderr,
1316                             "defer destroy is not supported with bookmark\n");
1317                         return (-1);
1318                 }
1319
1320                 if (cb.cb_recurse) {
1321                         (void) fprintf(stderr,
1322                             "recursive is not supported with bookmark\n");
1323                         return (-1);
1324                 }
1325
1326                 if (!zfs_bookmark_exists(argv[0])) {
1327                         (void) fprintf(stderr, gettext("bookmark '%s' "
1328                             "does not exist.\n"), argv[0]);
1329                         return (1);
1330                 }
1331
1332                 nvl = fnvlist_alloc();
1333                 fnvlist_add_boolean(nvl, argv[0]);
1334
1335                 err = lzc_destroy_bookmarks(nvl, NULL);
1336                 if (err != 0) {
1337                         (void) zfs_standard_error(g_zfs, err,
1338                             "cannot destroy bookmark");
1339                 }
1340
1341                 nvlist_free(cb.cb_nvl);
1342
1343                 return (err);
1344         } else {
1345                 /* Open the given dataset */
1346                 if ((zhp = zfs_open(g_zfs, argv[0], type)) == NULL)
1347                         return (1);
1348
1349                 cb.cb_target = zhp;
1350
1351                 /*
1352                  * Perform an explicit check for pools before going any further.
1353                  */
1354                 if (!cb.cb_recurse && strchr(zfs_get_name(zhp), '/') == NULL &&
1355                     zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
1356                         (void) fprintf(stderr, gettext("cannot destroy '%s': "
1357                             "operation does not apply to pools\n"),
1358                             zfs_get_name(zhp));
1359                         (void) fprintf(stderr, gettext("use 'zfs destroy -r "
1360                             "%s' to destroy all datasets in the pool\n"),
1361                             zfs_get_name(zhp));
1362                         (void) fprintf(stderr, gettext("use 'zpool destroy %s' "
1363                             "to destroy the pool itself\n"), zfs_get_name(zhp));
1364                         rv = 1;
1365                         goto out;
1366                 }
1367
1368                 /*
1369                  * Check for any dependents and/or clones.
1370                  */
1371                 cb.cb_first = B_TRUE;
1372                 if (!cb.cb_doclones &&
1373                     zfs_iter_dependents(zhp, B_TRUE, destroy_check_dependent,
1374                     &cb) != 0) {
1375                         rv = 1;
1376                         goto out;
1377                 }
1378
1379                 if (cb.cb_error) {
1380                         rv = 1;
1381                         goto out;
1382                 }
1383
1384                 cb.cb_batchedsnaps = fnvlist_alloc();
1385                 if (zfs_iter_dependents(zhp, B_FALSE, destroy_callback,
1386                     &cb) != 0) {
1387                         rv = 1;
1388                         goto out;
1389                 }
1390
1391                 /*
1392                  * Do the real thing.  The callback will close the
1393                  * handle regardless of whether it succeeds or not.
1394                  */
1395                 err = destroy_callback(zhp, &cb);
1396                 zhp = NULL;
1397                 if (err == 0) {
1398                         err = zfs_destroy_snaps_nvl(g_zfs,
1399                             cb.cb_batchedsnaps, cb.cb_defer_destroy);
1400                 }
1401                 if (err != 0)
1402                         rv = 1;
1403         }
1404
1405 out:
1406         fnvlist_free(cb.cb_batchedsnaps);
1407         fnvlist_free(cb.cb_nvl);
1408         if (zhp != NULL)
1409                 zfs_close(zhp);
1410         return (rv);
1411 }
1412
1413 static boolean_t
1414 is_recvd_column(zprop_get_cbdata_t *cbp)
1415 {
1416         int i;
1417         zfs_get_column_t col;
1418
1419         for (i = 0; i < ZFS_GET_NCOLS &&
1420             (col = cbp->cb_columns[i]) != GET_COL_NONE; i++)
1421                 if (col == GET_COL_RECVD)
1422                         return (B_TRUE);
1423         return (B_FALSE);
1424 }
1425
1426 /*
1427  * zfs get [-rHp] [-o all | field[,field]...] [-s source[,source]...]
1428  *      < all | property[,property]... > < fs | snap | vol > ...
1429  *
1430  *      -r      recurse over any child datasets
1431  *      -H      scripted mode.  Headers are stripped, and fields are separated
1432  *              by tabs instead of spaces.
1433  *      -o      Set of fields to display.  One of "name,property,value,
1434  *              received,source". Default is "name,property,value,source".
1435  *              "all" is an alias for all five.
1436  *      -s      Set of sources to allow.  One of
1437  *              "local,default,inherited,received,temporary,none".  Default is
1438  *              all six.
1439  *      -p      Display values in parsable (literal) format.
1440  *
1441  *  Prints properties for the given datasets.  The user can control which
1442  *  columns to display as well as which property types to allow.
1443  */
1444
1445 /*
1446  * Invoked to display the properties for a single dataset.
1447  */
1448 static int
1449 get_callback(zfs_handle_t *zhp, void *data)
1450 {
1451         char buf[ZFS_MAXPROPLEN];
1452         char rbuf[ZFS_MAXPROPLEN];
1453         zprop_source_t sourcetype;
1454         char source[ZFS_MAXNAMELEN];
1455         zprop_get_cbdata_t *cbp = data;
1456         nvlist_t *user_props = zfs_get_user_props(zhp);
1457         zprop_list_t *pl = cbp->cb_proplist;
1458         nvlist_t *propval;
1459         char *strval;
1460         char *sourceval;
1461         boolean_t received = is_recvd_column(cbp);
1462
1463         for (; pl != NULL; pl = pl->pl_next) {
1464                 char *recvdval = NULL;
1465                 /*
1466                  * Skip the special fake placeholder.  This will also skip over
1467                  * the name property when 'all' is specified.
1468                  */
1469                 if (pl->pl_prop == ZFS_PROP_NAME &&
1470                     pl == cbp->cb_proplist)
1471                         continue;
1472
1473                 if (pl->pl_prop != ZPROP_INVAL) {
1474                         if (zfs_prop_get(zhp, pl->pl_prop, buf,
1475                             sizeof (buf), &sourcetype, source,
1476                             sizeof (source),
1477                             cbp->cb_literal) != 0) {
1478                                 if (pl->pl_all)
1479                                         continue;
1480                                 if (!zfs_prop_valid_for_type(pl->pl_prop,
1481                                     ZFS_TYPE_DATASET)) {
1482                                         (void) fprintf(stderr,
1483                                             gettext("No such property '%s'\n"),
1484                                             zfs_prop_to_name(pl->pl_prop));
1485                                         continue;
1486                                 }
1487                                 sourcetype = ZPROP_SRC_NONE;
1488                                 (void) strlcpy(buf, "-", sizeof (buf));
1489                         }
1490
1491                         if (received && (zfs_prop_get_recvd(zhp,
1492                             zfs_prop_to_name(pl->pl_prop), rbuf, sizeof (rbuf),
1493                             cbp->cb_literal) == 0))
1494                                 recvdval = rbuf;
1495
1496                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1497                             zfs_prop_to_name(pl->pl_prop),
1498                             buf, sourcetype, source, recvdval);
1499                 } else if (zfs_prop_userquota(pl->pl_user_prop)) {
1500                         sourcetype = ZPROP_SRC_LOCAL;
1501
1502                         if (zfs_prop_get_userquota(zhp, pl->pl_user_prop,
1503                             buf, sizeof (buf), cbp->cb_literal) != 0) {
1504                                 sourcetype = ZPROP_SRC_NONE;
1505                                 (void) strlcpy(buf, "-", sizeof (buf));
1506                         }
1507
1508                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1509                             pl->pl_user_prop, buf, sourcetype, source, NULL);
1510                 } else if (zfs_prop_written(pl->pl_user_prop)) {
1511                         sourcetype = ZPROP_SRC_LOCAL;
1512
1513                         if (zfs_prop_get_written(zhp, pl->pl_user_prop,
1514                             buf, sizeof (buf), cbp->cb_literal) != 0) {
1515                                 sourcetype = ZPROP_SRC_NONE;
1516                                 (void) strlcpy(buf, "-", sizeof (buf));
1517                         }
1518
1519                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1520                             pl->pl_user_prop, buf, sourcetype, source, NULL);
1521                 } else {
1522                         if (nvlist_lookup_nvlist(user_props,
1523                             pl->pl_user_prop, &propval) != 0) {
1524                                 if (pl->pl_all)
1525                                         continue;
1526                                 sourcetype = ZPROP_SRC_NONE;
1527                                 strval = "-";
1528                         } else {
1529                                 verify(nvlist_lookup_string(propval,
1530                                     ZPROP_VALUE, &strval) == 0);
1531                                 verify(nvlist_lookup_string(propval,
1532                                     ZPROP_SOURCE, &sourceval) == 0);
1533
1534                                 if (strcmp(sourceval,
1535                                     zfs_get_name(zhp)) == 0) {
1536                                         sourcetype = ZPROP_SRC_LOCAL;
1537                                 } else if (strcmp(sourceval,
1538                                     ZPROP_SOURCE_VAL_RECVD) == 0) {
1539                                         sourcetype = ZPROP_SRC_RECEIVED;
1540                                 } else {
1541                                         sourcetype = ZPROP_SRC_INHERITED;
1542                                         (void) strlcpy(source,
1543                                             sourceval, sizeof (source));
1544                                 }
1545                         }
1546
1547                         if (received && (zfs_prop_get_recvd(zhp,
1548                             pl->pl_user_prop, rbuf, sizeof (rbuf),
1549                             cbp->cb_literal) == 0))
1550                                 recvdval = rbuf;
1551
1552                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1553                             pl->pl_user_prop, strval, sourcetype,
1554                             source, recvdval);
1555                 }
1556         }
1557
1558         return (0);
1559 }
1560
1561 static int
1562 zfs_do_get(int argc, char **argv)
1563 {
1564         zprop_get_cbdata_t cb = { 0 };
1565         int i, c, flags = ZFS_ITER_ARGS_CAN_BE_PATHS;
1566         int types = ZFS_TYPE_DATASET;
1567         char *value, *fields;
1568         int ret = 0;
1569         int limit = 0;
1570         zprop_list_t fake_name = { 0 };
1571
1572         /*
1573          * Set up default columns and sources.
1574          */
1575         cb.cb_sources = ZPROP_SRC_ALL;
1576         cb.cb_columns[0] = GET_COL_NAME;
1577         cb.cb_columns[1] = GET_COL_PROPERTY;
1578         cb.cb_columns[2] = GET_COL_VALUE;
1579         cb.cb_columns[3] = GET_COL_SOURCE;
1580         cb.cb_type = ZFS_TYPE_DATASET;
1581
1582         /* check options */
1583         while ((c = getopt(argc, argv, ":d:o:s:rt:Hp")) != -1) {
1584                 switch (c) {
1585                 case 'p':
1586                         cb.cb_literal = B_TRUE;
1587                         break;
1588                 case 'd':
1589                         limit = parse_depth(optarg, &flags);
1590                         break;
1591                 case 'r':
1592                         flags |= ZFS_ITER_RECURSE;
1593                         break;
1594                 case 'H':
1595                         cb.cb_scripted = B_TRUE;
1596                         break;
1597                 case ':':
1598                         (void) fprintf(stderr, gettext("missing argument for "
1599                             "'%c' option\n"), optopt);
1600                         usage(B_FALSE);
1601                         break;
1602                 case 'o':
1603                         /*
1604                          * Process the set of columns to display.  We zero out
1605                          * the structure to give us a blank slate.
1606                          */
1607                         bzero(&cb.cb_columns, sizeof (cb.cb_columns));
1608                         i = 0;
1609                         while (*optarg != '\0') {
1610                                 static char *col_subopts[] =
1611                                     { "name", "property", "value", "received",
1612                                     "source", "all", NULL };
1613
1614                                 if (i == ZFS_GET_NCOLS) {
1615                                         (void) fprintf(stderr, gettext("too "
1616                                             "many fields given to -o "
1617                                             "option\n"));
1618                                         usage(B_FALSE);
1619                                 }
1620
1621                                 switch (getsubopt(&optarg, col_subopts,
1622                                     &value)) {
1623                                 case 0:
1624                                         cb.cb_columns[i++] = GET_COL_NAME;
1625                                         break;
1626                                 case 1:
1627                                         cb.cb_columns[i++] = GET_COL_PROPERTY;
1628                                         break;
1629                                 case 2:
1630                                         cb.cb_columns[i++] = GET_COL_VALUE;
1631                                         break;
1632                                 case 3:
1633                                         cb.cb_columns[i++] = GET_COL_RECVD;
1634                                         flags |= ZFS_ITER_RECVD_PROPS;
1635                                         break;
1636                                 case 4:
1637                                         cb.cb_columns[i++] = GET_COL_SOURCE;
1638                                         break;
1639                                 case 5:
1640                                         if (i > 0) {
1641                                                 (void) fprintf(stderr,
1642                                                     gettext("\"all\" conflicts "
1643                                                     "with specific fields "
1644                                                     "given to -o option\n"));
1645                                                 usage(B_FALSE);
1646                                         }
1647                                         cb.cb_columns[0] = GET_COL_NAME;
1648                                         cb.cb_columns[1] = GET_COL_PROPERTY;
1649                                         cb.cb_columns[2] = GET_COL_VALUE;
1650                                         cb.cb_columns[3] = GET_COL_RECVD;
1651                                         cb.cb_columns[4] = GET_COL_SOURCE;
1652                                         flags |= ZFS_ITER_RECVD_PROPS;
1653                                         i = ZFS_GET_NCOLS;
1654                                         break;
1655                                 default:
1656                                         (void) fprintf(stderr,
1657                                             gettext("invalid column name "
1658                                             "'%s'\n"), value);
1659                                         usage(B_FALSE);
1660                                 }
1661                         }
1662                         break;
1663
1664                 case 's':
1665                         cb.cb_sources = 0;
1666                         while (*optarg != '\0') {
1667                                 static char *source_subopts[] = {
1668                                         "local", "default", "inherited",
1669                                         "received", "temporary", "none",
1670                                         NULL };
1671
1672                                 switch (getsubopt(&optarg, source_subopts,
1673                                     &value)) {
1674                                 case 0:
1675                                         cb.cb_sources |= ZPROP_SRC_LOCAL;
1676                                         break;
1677                                 case 1:
1678                                         cb.cb_sources |= ZPROP_SRC_DEFAULT;
1679                                         break;
1680                                 case 2:
1681                                         cb.cb_sources |= ZPROP_SRC_INHERITED;
1682                                         break;
1683                                 case 3:
1684                                         cb.cb_sources |= ZPROP_SRC_RECEIVED;
1685                                         break;
1686                                 case 4:
1687                                         cb.cb_sources |= ZPROP_SRC_TEMPORARY;
1688                                         break;
1689                                 case 5:
1690                                         cb.cb_sources |= ZPROP_SRC_NONE;
1691                                         break;
1692                                 default:
1693                                         (void) fprintf(stderr,
1694                                             gettext("invalid source "
1695                                             "'%s'\n"), value);
1696                                         usage(B_FALSE);
1697                                 }
1698                         }
1699                         break;
1700
1701                 case 't':
1702                         types = 0;
1703                         flags &= ~ZFS_ITER_PROP_LISTSNAPS;
1704                         while (*optarg != '\0') {
1705                                 static char *type_subopts[] = { "filesystem",
1706                                     "volume", "snapshot", "bookmark",
1707                                     "all", NULL };
1708
1709                                 switch (getsubopt(&optarg, type_subopts,
1710                                     &value)) {
1711                                 case 0:
1712                                         types |= ZFS_TYPE_FILESYSTEM;
1713                                         break;
1714                                 case 1:
1715                                         types |= ZFS_TYPE_VOLUME;
1716                                         break;
1717                                 case 2:
1718                                         types |= ZFS_TYPE_SNAPSHOT;
1719                                         break;
1720                                 case 3:
1721                                         types |= ZFS_TYPE_BOOKMARK;
1722                                         break;
1723                                 case 4:
1724                                         types = ZFS_TYPE_DATASET |
1725                                             ZFS_TYPE_BOOKMARK;
1726                                         break;
1727
1728                                 default:
1729                                         (void) fprintf(stderr,
1730                                             gettext("invalid type '%s'\n"),
1731                                             value);
1732                                         usage(B_FALSE);
1733                                 }
1734                         }
1735                         break;
1736
1737                 case '?':
1738                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1739                             optopt);
1740                         usage(B_FALSE);
1741                 }
1742         }
1743
1744         argc -= optind;
1745         argv += optind;
1746
1747         if (argc < 1) {
1748                 (void) fprintf(stderr, gettext("missing property "
1749                     "argument\n"));
1750                 usage(B_FALSE);
1751         }
1752
1753         fields = argv[0];
1754
1755         if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
1756             != 0)
1757                 usage(B_FALSE);
1758
1759         argc--;
1760         argv++;
1761
1762         /*
1763          * As part of zfs_expand_proplist(), we keep track of the maximum column
1764          * width for each property.  For the 'NAME' (and 'SOURCE') columns, we
1765          * need to know the maximum name length.  However, the user likely did
1766          * not specify 'name' as one of the properties to fetch, so we need to
1767          * make sure we always include at least this property for
1768          * print_get_headers() to work properly.
1769          */
1770         if (cb.cb_proplist != NULL) {
1771                 fake_name.pl_prop = ZFS_PROP_NAME;
1772                 fake_name.pl_width = strlen(gettext("NAME"));
1773                 fake_name.pl_next = cb.cb_proplist;
1774                 cb.cb_proplist = &fake_name;
1775         }
1776
1777         cb.cb_first = B_TRUE;
1778
1779         /* run for each object */
1780         ret = zfs_for_each(argc, argv, flags, types, NULL,
1781             &cb.cb_proplist, limit, get_callback, &cb);
1782
1783         if (cb.cb_proplist == &fake_name)
1784                 zprop_free_list(fake_name.pl_next);
1785         else
1786                 zprop_free_list(cb.cb_proplist);
1787
1788         return (ret);
1789 }
1790
1791 /*
1792  * inherit [-rS] <property> <fs|vol> ...
1793  *
1794  *      -r      Recurse over all children
1795  *      -S      Revert to received value, if any
1796  *
1797  * For each dataset specified on the command line, inherit the given property
1798  * from its parent.  Inheriting a property at the pool level will cause it to
1799  * use the default value.  The '-r' flag will recurse over all children, and is
1800  * useful for setting a property on a hierarchy-wide basis, regardless of any
1801  * local modifications for each dataset.
1802  */
1803
1804 typedef struct inherit_cbdata {
1805         const char *cb_propname;
1806         boolean_t cb_received;
1807 } inherit_cbdata_t;
1808
1809 static int
1810 inherit_recurse_cb(zfs_handle_t *zhp, void *data)
1811 {
1812         inherit_cbdata_t *cb = data;
1813         zfs_prop_t prop = zfs_name_to_prop(cb->cb_propname);
1814
1815         /*
1816          * If we're doing it recursively, then ignore properties that
1817          * are not valid for this type of dataset.
1818          */
1819         if (prop != ZPROP_INVAL &&
1820             !zfs_prop_valid_for_type(prop, zfs_get_type(zhp)))
1821                 return (0);
1822
1823         return (zfs_prop_inherit(zhp, cb->cb_propname, cb->cb_received) != 0);
1824 }
1825
1826 static int
1827 inherit_cb(zfs_handle_t *zhp, void *data)
1828 {
1829         inherit_cbdata_t *cb = data;
1830
1831         return (zfs_prop_inherit(zhp, cb->cb_propname, cb->cb_received) != 0);
1832 }
1833
1834 static int
1835 zfs_do_inherit(int argc, char **argv)
1836 {
1837         int c;
1838         zfs_prop_t prop;
1839         inherit_cbdata_t cb = { 0 };
1840         char *propname;
1841         int ret = 0;
1842         int flags = 0;
1843         boolean_t received = B_FALSE;
1844
1845         /* check options */
1846         while ((c = getopt(argc, argv, "rS")) != -1) {
1847                 switch (c) {
1848                 case 'r':
1849                         flags |= ZFS_ITER_RECURSE;
1850                         break;
1851                 case 'S':
1852                         received = B_TRUE;
1853                         break;
1854                 case '?':
1855                 default:
1856                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1857                             optopt);
1858                         usage(B_FALSE);
1859                 }
1860         }
1861
1862         argc -= optind;
1863         argv += optind;
1864
1865         /* check number of arguments */
1866         if (argc < 1) {
1867                 (void) fprintf(stderr, gettext("missing property argument\n"));
1868                 usage(B_FALSE);
1869         }
1870         if (argc < 2) {
1871                 (void) fprintf(stderr, gettext("missing dataset argument\n"));
1872                 usage(B_FALSE);
1873         }
1874
1875         propname = argv[0];
1876         argc--;
1877         argv++;
1878
1879         if ((prop = zfs_name_to_prop(propname)) != ZPROP_INVAL) {
1880                 if (zfs_prop_readonly(prop)) {
1881                         (void) fprintf(stderr, gettext(
1882                             "%s property is read-only\n"),
1883                             propname);
1884                         return (1);
1885                 }
1886                 if (!zfs_prop_inheritable(prop) && !received) {
1887                         (void) fprintf(stderr, gettext("'%s' property cannot "
1888                             "be inherited\n"), propname);
1889                         if (prop == ZFS_PROP_QUOTA ||
1890                             prop == ZFS_PROP_RESERVATION ||
1891                             prop == ZFS_PROP_REFQUOTA ||
1892                             prop == ZFS_PROP_REFRESERVATION)
1893                                 (void) fprintf(stderr, gettext("use 'zfs set "
1894                                     "%s=none' to clear\n"), propname);
1895                         return (1);
1896                 }
1897                 if (received && (prop == ZFS_PROP_VOLSIZE ||
1898                     prop == ZFS_PROP_VERSION)) {
1899                         (void) fprintf(stderr, gettext("'%s' property cannot "
1900                             "be reverted to a received value\n"), propname);
1901                         return (1);
1902                 }
1903         } else if (!zfs_prop_user(propname)) {
1904                 (void) fprintf(stderr, gettext("invalid property '%s'\n"),
1905                     propname);
1906                 usage(B_FALSE);
1907         }
1908
1909         cb.cb_propname = propname;
1910         cb.cb_received = received;
1911
1912         if (flags & ZFS_ITER_RECURSE) {
1913                 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
1914                     NULL, NULL, 0, inherit_recurse_cb, &cb);
1915         } else {
1916                 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
1917                     NULL, NULL, 0, inherit_cb, &cb);
1918         }
1919
1920         return (ret);
1921 }
1922
1923 typedef struct upgrade_cbdata {
1924         uint64_t cb_numupgraded;
1925         uint64_t cb_numsamegraded;
1926         uint64_t cb_numfailed;
1927         uint64_t cb_version;
1928         boolean_t cb_newer;
1929         boolean_t cb_foundone;
1930         char cb_lastfs[ZFS_MAXNAMELEN];
1931 } upgrade_cbdata_t;
1932
1933 static int
1934 same_pool(zfs_handle_t *zhp, const char *name)
1935 {
1936         int len1 = strcspn(name, "/@");
1937         const char *zhname = zfs_get_name(zhp);
1938         int len2 = strcspn(zhname, "/@");
1939
1940         if (len1 != len2)
1941                 return (B_FALSE);
1942         return (strncmp(name, zhname, len1) == 0);
1943 }
1944
1945 static int
1946 upgrade_list_callback(zfs_handle_t *zhp, void *data)
1947 {
1948         upgrade_cbdata_t *cb = data;
1949         int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
1950
1951         /* list if it's old/new */
1952         if ((!cb->cb_newer && version < ZPL_VERSION) ||
1953             (cb->cb_newer && version > ZPL_VERSION)) {
1954                 char *str;
1955                 if (cb->cb_newer) {
1956                         str = gettext("The following filesystems are "
1957                             "formatted using a newer software version and\n"
1958                             "cannot be accessed on the current system.\n\n");
1959                 } else {
1960                         str = gettext("The following filesystems are "
1961                             "out of date, and can be upgraded.  After being\n"
1962                             "upgraded, these filesystems (and any 'zfs send' "
1963                             "streams generated from\n"
1964                             "subsequent snapshots) will no longer be "
1965                             "accessible by older software versions.\n\n");
1966                 }
1967
1968                 if (!cb->cb_foundone) {
1969                         (void) puts(str);
1970                         (void) printf(gettext("VER  FILESYSTEM\n"));
1971                         (void) printf(gettext("---  ------------\n"));
1972                         cb->cb_foundone = B_TRUE;
1973                 }
1974
1975                 (void) printf("%2u   %s\n", version, zfs_get_name(zhp));
1976         }
1977
1978         return (0);
1979 }
1980
1981 static int
1982 upgrade_set_callback(zfs_handle_t *zhp, void *data)
1983 {
1984         upgrade_cbdata_t *cb = data;
1985         int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
1986         int needed_spa_version;
1987         int spa_version;
1988
1989         if (zfs_spa_version(zhp, &spa_version) < 0)
1990                 return (-1);
1991
1992         needed_spa_version = zfs_spa_version_map(cb->cb_version);
1993
1994         if (needed_spa_version < 0)
1995                 return (-1);
1996
1997         if (spa_version < needed_spa_version) {
1998                 /* can't upgrade */
1999                 (void) printf(gettext("%s: can not be "
2000                     "upgraded; the pool version needs to first "
2001                     "be upgraded\nto version %d\n\n"),
2002                     zfs_get_name(zhp), needed_spa_version);
2003                 cb->cb_numfailed++;
2004                 return (0);
2005         }
2006
2007         /* upgrade */
2008         if (version < cb->cb_version) {
2009                 char verstr[16];
2010                 (void) snprintf(verstr, sizeof (verstr),
2011                     "%llu", cb->cb_version);
2012                 if (cb->cb_lastfs[0] && !same_pool(zhp, cb->cb_lastfs)) {
2013                         /*
2014                          * If they did "zfs upgrade -a", then we could
2015                          * be doing ioctls to different pools.  We need
2016                          * to log this history once to each pool, and bypass
2017                          * the normal history logging that happens in main().
2018                          */
2019                         (void) zpool_log_history(g_zfs, history_str);
2020                         log_history = B_FALSE;
2021                 }
2022                 if (zfs_prop_set(zhp, "version", verstr) == 0)
2023                         cb->cb_numupgraded++;
2024                 else
2025                         cb->cb_numfailed++;
2026                 (void) strcpy(cb->cb_lastfs, zfs_get_name(zhp));
2027         } else if (version > cb->cb_version) {
2028                 /* can't downgrade */
2029                 (void) printf(gettext("%s: can not be downgraded; "
2030                     "it is already at version %u\n"),
2031                     zfs_get_name(zhp), version);
2032                 cb->cb_numfailed++;
2033         } else {
2034                 cb->cb_numsamegraded++;
2035         }
2036         return (0);
2037 }
2038
2039 /*
2040  * zfs upgrade
2041  * zfs upgrade -v
2042  * zfs upgrade [-r] [-V <version>] <-a | filesystem>
2043  */
2044 static int
2045 zfs_do_upgrade(int argc, char **argv)
2046 {
2047         boolean_t all = B_FALSE;
2048         boolean_t showversions = B_FALSE;
2049         int ret = 0;
2050         upgrade_cbdata_t cb = { 0 };
2051         char c;
2052         int flags = ZFS_ITER_ARGS_CAN_BE_PATHS;
2053
2054         /* check options */
2055         while ((c = getopt(argc, argv, "rvV:a")) != -1) {
2056                 switch (c) {
2057                 case 'r':
2058                         flags |= ZFS_ITER_RECURSE;
2059                         break;
2060                 case 'v':
2061                         showversions = B_TRUE;
2062                         break;
2063                 case 'V':
2064                         if (zfs_prop_string_to_index(ZFS_PROP_VERSION,
2065                             optarg, &cb.cb_version) != 0) {
2066                                 (void) fprintf(stderr,
2067                                     gettext("invalid version %s\n"), optarg);
2068                                 usage(B_FALSE);
2069                         }
2070                         break;
2071                 case 'a':
2072                         all = B_TRUE;
2073                         break;
2074                 case '?':
2075                 default:
2076                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2077                             optopt);
2078                         usage(B_FALSE);
2079                 }
2080         }
2081
2082         argc -= optind;
2083         argv += optind;
2084
2085         if ((!all && !argc) && ((flags & ZFS_ITER_RECURSE) | cb.cb_version))
2086                 usage(B_FALSE);
2087         if (showversions && (flags & ZFS_ITER_RECURSE || all ||
2088             cb.cb_version || argc))
2089                 usage(B_FALSE);
2090         if ((all || argc) && (showversions))
2091                 usage(B_FALSE);
2092         if (all && argc)
2093                 usage(B_FALSE);
2094
2095         if (showversions) {
2096                 /* Show info on available versions. */
2097                 (void) printf(gettext("The following filesystem versions are "
2098                     "supported:\n\n"));
2099                 (void) printf(gettext("VER  DESCRIPTION\n"));
2100                 (void) printf("---  -----------------------------------------"
2101                     "---------------\n");
2102                 (void) printf(gettext(" 1   Initial ZFS filesystem version\n"));
2103                 (void) printf(gettext(" 2   Enhanced directory entries\n"));
2104                 (void) printf(gettext(" 3   Case insensitive and filesystem "
2105                     "user identifier (FUID)\n"));
2106                 (void) printf(gettext(" 4   userquota, groupquota "
2107                     "properties\n"));
2108                 (void) printf(gettext(" 5   System attributes\n"));
2109                 (void) printf(gettext("\nFor more information on a particular "
2110                     "version, including supported releases,\n"));
2111                 (void) printf("see the ZFS Administration Guide.\n\n");
2112                 ret = 0;
2113         } else if (argc || all) {
2114                 /* Upgrade filesystems */
2115                 if (cb.cb_version == 0)
2116                         cb.cb_version = ZPL_VERSION;
2117                 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_FILESYSTEM,
2118                     NULL, NULL, 0, upgrade_set_callback, &cb);
2119                 (void) printf(gettext("%llu filesystems upgraded\n"),
2120                     cb.cb_numupgraded);
2121                 if (cb.cb_numsamegraded) {
2122                         (void) printf(gettext("%llu filesystems already at "
2123                             "this version\n"),
2124                             cb.cb_numsamegraded);
2125                 }
2126                 if (cb.cb_numfailed != 0)
2127                         ret = 1;
2128         } else {
2129                 /* List old-version filesytems */
2130                 boolean_t found;
2131                 (void) printf(gettext("This system is currently running "
2132                     "ZFS filesystem version %llu.\n\n"), ZPL_VERSION);
2133
2134                 flags |= ZFS_ITER_RECURSE;
2135                 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
2136                     NULL, NULL, 0, upgrade_list_callback, &cb);
2137
2138                 found = cb.cb_foundone;
2139                 cb.cb_foundone = B_FALSE;
2140                 cb.cb_newer = B_TRUE;
2141
2142                 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
2143                     NULL, NULL, 0, upgrade_list_callback, &cb);
2144
2145                 if (!cb.cb_foundone && !found) {
2146                         (void) printf(gettext("All filesystems are "
2147                             "formatted with the current version.\n"));
2148                 }
2149         }
2150
2151         return (ret);
2152 }
2153
2154 /*
2155  * zfs userspace [-Hinp] [-o field[,...]] [-s field [-s field]...]
2156  *               [-S field [-S field]...] [-t type[,...]] filesystem | snapshot
2157  * zfs groupspace [-Hinp] [-o field[,...]] [-s field [-s field]...]
2158  *                [-S field [-S field]...] [-t type[,...]] filesystem | snapshot
2159  *
2160  *      -H      Scripted mode; elide headers and separate columns by tabs.
2161  *      -i      Translate SID to POSIX ID.
2162  *      -n      Print numeric ID instead of user/group name.
2163  *      -o      Control which fields to display.
2164  *      -p      Use exact (parsable) numeric output.
2165  *      -s      Specify sort columns, descending order.
2166  *      -S      Specify sort columns, ascending order.
2167  *      -t      Control which object types to display.
2168  *
2169  *      Displays space consumed by, and quotas on, each user in the specified
2170  *      filesystem or snapshot.
2171  */
2172
2173 /* us_field_types, us_field_hdr and us_field_names should be kept in sync */
2174 enum us_field_types {
2175         USFIELD_TYPE,
2176         USFIELD_NAME,
2177         USFIELD_USED,
2178         USFIELD_QUOTA
2179 };
2180 static char *us_field_hdr[] = { "TYPE", "NAME", "USED", "QUOTA" };
2181 static char *us_field_names[] = { "type", "name", "used", "quota" };
2182 #define USFIELD_LAST    (sizeof (us_field_names) / sizeof (char *))
2183
2184 #define USTYPE_PSX_GRP  (1 << 0)
2185 #define USTYPE_PSX_USR  (1 << 1)
2186 #define USTYPE_SMB_GRP  (1 << 2)
2187 #define USTYPE_SMB_USR  (1 << 3)
2188 #define USTYPE_ALL      \
2189         (USTYPE_PSX_GRP | USTYPE_PSX_USR | USTYPE_SMB_GRP | USTYPE_SMB_USR)
2190
2191 static int us_type_bits[] = {
2192         USTYPE_PSX_GRP,
2193         USTYPE_PSX_USR,
2194         USTYPE_SMB_GRP,
2195         USTYPE_SMB_USR,
2196         USTYPE_ALL
2197 };
2198 static char *us_type_names[] = { "posixgroup", "posixuser", "smbgroup",
2199         "smbuser", "all" };
2200
2201 typedef struct us_node {
2202         nvlist_t        *usn_nvl;
2203         uu_avl_node_t   usn_avlnode;
2204         uu_list_node_t  usn_listnode;
2205 } us_node_t;
2206
2207 typedef struct us_cbdata {
2208         nvlist_t        **cb_nvlp;
2209         uu_avl_pool_t   *cb_avl_pool;
2210         uu_avl_t        *cb_avl;
2211         boolean_t       cb_numname;
2212         boolean_t       cb_nicenum;
2213         boolean_t       cb_sid2posix;
2214         zfs_userquota_prop_t cb_prop;
2215         zfs_sort_column_t *cb_sortcol;
2216         size_t          cb_width[USFIELD_LAST];
2217 } us_cbdata_t;
2218
2219 static boolean_t us_populated = B_FALSE;
2220
2221 typedef struct {
2222         zfs_sort_column_t *si_sortcol;
2223         boolean_t       si_numname;
2224 } us_sort_info_t;
2225
2226 static int
2227 us_field_index(char *field)
2228 {
2229         int i;
2230
2231         for (i = 0; i < USFIELD_LAST; i++) {
2232                 if (strcmp(field, us_field_names[i]) == 0)
2233                         return (i);
2234         }
2235
2236         return (-1);
2237 }
2238
2239 static int
2240 us_compare(const void *larg, const void *rarg, void *unused)
2241 {
2242         const us_node_t *l = larg;
2243         const us_node_t *r = rarg;
2244         us_sort_info_t *si = (us_sort_info_t *)unused;
2245         zfs_sort_column_t *sortcol = si->si_sortcol;
2246         boolean_t numname = si->si_numname;
2247         nvlist_t *lnvl = l->usn_nvl;
2248         nvlist_t *rnvl = r->usn_nvl;
2249         int rc = 0;
2250         boolean_t lvb, rvb;
2251
2252         for (; sortcol != NULL; sortcol = sortcol->sc_next) {
2253                 char *lvstr = "";
2254                 char *rvstr = "";
2255                 uint32_t lv32 = 0;
2256                 uint32_t rv32 = 0;
2257                 uint64_t lv64 = 0;
2258                 uint64_t rv64 = 0;
2259                 zfs_prop_t prop = sortcol->sc_prop;
2260                 const char *propname = NULL;
2261                 boolean_t reverse = sortcol->sc_reverse;
2262
2263                 switch (prop) {
2264                 case ZFS_PROP_TYPE:
2265                         propname = "type";
2266                         (void) nvlist_lookup_uint32(lnvl, propname, &lv32);
2267                         (void) nvlist_lookup_uint32(rnvl, propname, &rv32);
2268                         if (rv32 != lv32)
2269                                 rc = (rv32 < lv32) ? 1 : -1;
2270                         break;
2271                 case ZFS_PROP_NAME:
2272                         propname = "name";
2273                         if (numname) {
2274                                 (void) nvlist_lookup_uint64(lnvl, propname,
2275                                     &lv64);
2276                                 (void) nvlist_lookup_uint64(rnvl, propname,
2277                                     &rv64);
2278                                 if (rv64 != lv64)
2279                                         rc = (rv64 < lv64) ? 1 : -1;
2280                         } else {
2281                                 (void) nvlist_lookup_string(lnvl, propname,
2282                                     &lvstr);
2283                                 (void) nvlist_lookup_string(rnvl, propname,
2284                                     &rvstr);
2285                                 rc = strcmp(lvstr, rvstr);
2286                         }
2287                         break;
2288                 case ZFS_PROP_USED:
2289                 case ZFS_PROP_QUOTA:
2290                         if (!us_populated)
2291                                 break;
2292                         if (prop == ZFS_PROP_USED)
2293                                 propname = "used";
2294                         else
2295                                 propname = "quota";
2296                         (void) nvlist_lookup_uint64(lnvl, propname, &lv64);
2297                         (void) nvlist_lookup_uint64(rnvl, propname, &rv64);
2298                         if (rv64 != lv64)
2299                                 rc = (rv64 < lv64) ? 1 : -1;
2300                         break;
2301                 }
2302
2303                 if (rc != 0) {
2304                         if (rc < 0)
2305                                 return (reverse ? 1 : -1);
2306                         else
2307                                 return (reverse ? -1 : 1);
2308                 }
2309         }
2310
2311         /*
2312          * If entries still seem to be the same, check if they are of the same
2313          * type (smbentity is added only if we are doing SID to POSIX ID
2314          * translation where we can have duplicate type/name combinations).
2315          */
2316         if (nvlist_lookup_boolean_value(lnvl, "smbentity", &lvb) == 0 &&
2317             nvlist_lookup_boolean_value(rnvl, "smbentity", &rvb) == 0 &&
2318             lvb != rvb)
2319                 return (lvb < rvb ? -1 : 1);
2320
2321         return (0);
2322 }
2323
2324 static inline const char *
2325 us_type2str(unsigned field_type)
2326 {
2327         switch (field_type) {
2328         case USTYPE_PSX_USR:
2329                 return ("POSIX User");
2330         case USTYPE_PSX_GRP:
2331                 return ("POSIX Group");
2332         case USTYPE_SMB_USR:
2333                 return ("SMB User");
2334         case USTYPE_SMB_GRP:
2335                 return ("SMB Group");
2336         default:
2337                 return ("Undefined");
2338         }
2339 }
2340
2341 static int
2342 userspace_cb(void *arg, const char *domain, uid_t rid, uint64_t space)
2343 {
2344         us_cbdata_t *cb = (us_cbdata_t *)arg;
2345         zfs_userquota_prop_t prop = cb->cb_prop;
2346         char *name = NULL;
2347         char *propname;
2348         char sizebuf[32];
2349         us_node_t *node;
2350         uu_avl_pool_t *avl_pool = cb->cb_avl_pool;
2351         uu_avl_t *avl = cb->cb_avl;
2352         uu_avl_index_t idx;
2353         nvlist_t *props;
2354         us_node_t *n;
2355         zfs_sort_column_t *sortcol = cb->cb_sortcol;
2356         unsigned type;
2357         const char *typestr;
2358         size_t namelen;
2359         size_t typelen;
2360         size_t sizelen;
2361         int typeidx, nameidx, sizeidx;
2362         us_sort_info_t sortinfo = { sortcol, cb->cb_numname };
2363         boolean_t smbentity = B_FALSE;
2364
2365         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
2366                 nomem();
2367         node = safe_malloc(sizeof (us_node_t));
2368         uu_avl_node_init(node, &node->usn_avlnode, avl_pool);
2369         node->usn_nvl = props;
2370
2371         if (domain != NULL && domain[0] != '\0') {
2372                 /* SMB */
2373                 char sid[ZFS_MAXNAMELEN + 32];
2374                 uid_t id;
2375                 uint64_t classes;
2376                 int err;
2377                 directory_error_t e;
2378
2379                 smbentity = B_TRUE;
2380
2381                 (void) snprintf(sid, sizeof (sid), "%s-%u", domain, rid);
2382
2383                 if (prop == ZFS_PROP_GROUPUSED || prop == ZFS_PROP_GROUPQUOTA) {
2384                         type = USTYPE_SMB_GRP;
2385                         err = sid_to_id(sid, B_FALSE, &id);
2386                 } else {
2387                         type = USTYPE_SMB_USR;
2388                         err = sid_to_id(sid, B_TRUE, &id);
2389                 }
2390
2391                 if (err == 0) {
2392                         rid = id;
2393                         if (!cb->cb_sid2posix) {
2394                                 e = directory_name_from_sid(NULL, sid, &name,
2395                                     &classes);
2396                                 if (e != NULL)
2397                                         directory_error_free(e);
2398                                 if (name == NULL)
2399                                         name = sid;
2400                         }
2401                 }
2402         }
2403
2404         if (cb->cb_sid2posix || domain == NULL || domain[0] == '\0') {
2405                 /* POSIX or -i */
2406                 if (prop == ZFS_PROP_GROUPUSED || prop == ZFS_PROP_GROUPQUOTA) {
2407                         type = USTYPE_PSX_GRP;
2408                         if (!cb->cb_numname) {
2409                                 struct group *g;
2410
2411                                 if ((g = getgrgid(rid)) != NULL)
2412                                         name = g->gr_name;
2413                         }
2414                 } else {
2415                         type = USTYPE_PSX_USR;
2416                         if (!cb->cb_numname) {
2417                                 struct passwd *p;
2418
2419                                 if ((p = getpwuid(rid)) != NULL)
2420                                         name = p->pw_name;
2421                         }
2422                 }
2423         }
2424
2425         /*
2426          * Make sure that the type/name combination is unique when doing
2427          * SID to POSIX ID translation (hence changing the type from SMB to
2428          * POSIX).
2429          */
2430         if (cb->cb_sid2posix &&
2431             nvlist_add_boolean_value(props, "smbentity", smbentity) != 0)
2432                 nomem();
2433
2434         /* Calculate/update width of TYPE field */
2435         typestr = us_type2str(type);
2436         typelen = strlen(gettext(typestr));
2437         typeidx = us_field_index("type");
2438         if (typelen > cb->cb_width[typeidx])
2439                 cb->cb_width[typeidx] = typelen;
2440         if (nvlist_add_uint32(props, "type", type) != 0)
2441                 nomem();
2442
2443         /* Calculate/update width of NAME field */
2444         if ((cb->cb_numname && cb->cb_sid2posix) || name == NULL) {
2445                 if (nvlist_add_uint64(props, "name", rid) != 0)
2446                         nomem();
2447                 namelen = snprintf(NULL, 0, "%u", rid);
2448         } else {
2449                 if (nvlist_add_string(props, "name", name) != 0)
2450                         nomem();
2451                 namelen = strlen(name);
2452         }
2453         nameidx = us_field_index("name");
2454         if (namelen > cb->cb_width[nameidx])
2455                 cb->cb_width[nameidx] = namelen;
2456
2457         /*
2458          * Check if this type/name combination is in the list and update it;
2459          * otherwise add new node to the list.
2460          */
2461         if ((n = uu_avl_find(avl, node, &sortinfo, &idx)) == NULL) {
2462                 uu_avl_insert(avl, node, idx);
2463         } else {
2464                 nvlist_free(props);
2465                 free(node);
2466                 node = n;
2467                 props = node->usn_nvl;
2468         }
2469
2470         /* Calculate/update width of USED/QUOTA fields */
2471         if (cb->cb_nicenum)
2472                 zfs_nicenum(space, sizebuf, sizeof (sizebuf));
2473         else
2474                 (void) snprintf(sizebuf, sizeof (sizebuf), "%llu", space);
2475         sizelen = strlen(sizebuf);
2476         if (prop == ZFS_PROP_USERUSED || prop == ZFS_PROP_GROUPUSED) {
2477                 propname = "used";
2478                 if (!nvlist_exists(props, "quota"))
2479                         (void) nvlist_add_uint64(props, "quota", 0);
2480         } else {
2481                 propname = "quota";
2482                 if (!nvlist_exists(props, "used"))
2483                         (void) nvlist_add_uint64(props, "used", 0);
2484         }
2485         sizeidx = us_field_index(propname);
2486         if (sizelen > cb->cb_width[sizeidx])
2487                 cb->cb_width[sizeidx] = sizelen;
2488
2489         if (nvlist_add_uint64(props, propname, space) != 0)
2490                 nomem();
2491
2492         return (0);
2493 }
2494
2495 static void
2496 print_us_node(boolean_t scripted, boolean_t parsable, int *fields, int types,
2497     size_t *width, us_node_t *node)
2498 {
2499         nvlist_t *nvl = node->usn_nvl;
2500         char valstr[ZFS_MAXNAMELEN];
2501         boolean_t first = B_TRUE;
2502         int cfield = 0;
2503         int field;
2504         uint32_t ustype;
2505
2506         /* Check type */
2507         (void) nvlist_lookup_uint32(nvl, "type", &ustype);
2508         if (!(ustype & types))
2509                 return;
2510
2511         while ((field = fields[cfield]) != USFIELD_LAST) {
2512                 nvpair_t *nvp = NULL;
2513                 data_type_t type;
2514                 uint32_t val32;
2515                 uint64_t val64;
2516                 char *strval = NULL;
2517
2518                 while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
2519                         if (strcmp(nvpair_name(nvp),
2520                             us_field_names[field]) == 0)
2521                                 break;
2522                 }
2523
2524                 type = nvpair_type(nvp);
2525                 switch (type) {
2526                 case DATA_TYPE_UINT32:
2527                         (void) nvpair_value_uint32(nvp, &val32);
2528                         break;
2529                 case DATA_TYPE_UINT64:
2530                         (void) nvpair_value_uint64(nvp, &val64);
2531                         break;
2532                 case DATA_TYPE_STRING:
2533                         (void) nvpair_value_string(nvp, &strval);
2534                         break;
2535                 default:
2536                         (void) fprintf(stderr, "invalid data type\n");
2537                 }
2538
2539                 switch (field) {
2540                 case USFIELD_TYPE:
2541                         strval = (char *)us_type2str(val32);
2542                         break;
2543                 case USFIELD_NAME:
2544                         if (type == DATA_TYPE_UINT64) {
2545                                 (void) sprintf(valstr, "%llu", val64);
2546                                 strval = valstr;
2547                         }
2548                         break;
2549                 case USFIELD_USED:
2550                 case USFIELD_QUOTA:
2551                         if (type == DATA_TYPE_UINT64) {
2552                                 if (parsable) {
2553                                         (void) sprintf(valstr, "%llu", val64);
2554                                 } else {
2555                                         zfs_nicenum(val64, valstr,
2556                                             sizeof (valstr));
2557                                 }
2558                                 if (field == USFIELD_QUOTA &&
2559                                     strcmp(valstr, "0") == 0)
2560                                         strval = "none";
2561                                 else
2562                                         strval = valstr;
2563                         }
2564                         break;
2565                 }
2566
2567                 if (!first) {
2568                         if (scripted)
2569                                 (void) printf("\t");
2570                         else
2571                                 (void) printf("  ");
2572                 }
2573                 if (scripted)
2574                         (void) printf("%s", strval);
2575                 else if (field == USFIELD_TYPE || field == USFIELD_NAME)
2576                         (void) printf("%-*s", width[field], strval);
2577                 else
2578                         (void) printf("%*s", width[field], strval);
2579
2580                 first = B_FALSE;
2581                 cfield++;
2582         }
2583
2584         (void) printf("\n");
2585 }
2586
2587 static void
2588 print_us(boolean_t scripted, boolean_t parsable, int *fields, int types,
2589     size_t *width, boolean_t rmnode, uu_avl_t *avl)
2590 {
2591         us_node_t *node;
2592         const char *col;
2593         int cfield = 0;
2594         int field;
2595
2596         if (!scripted) {
2597                 boolean_t first = B_TRUE;
2598
2599                 while ((field = fields[cfield]) != USFIELD_LAST) {
2600                         col = gettext(us_field_hdr[field]);
2601                         if (field == USFIELD_TYPE || field == USFIELD_NAME) {
2602                                 (void) printf(first ? "%-*s" : "  %-*s",
2603                                     width[field], col);
2604                         } else {
2605                                 (void) printf(first ? "%*s" : "  %*s",
2606                                     width[field], col);
2607                         }
2608                         first = B_FALSE;
2609                         cfield++;
2610                 }
2611                 (void) printf("\n");
2612         }
2613
2614         for (node = uu_avl_first(avl); node; node = uu_avl_next(avl, node)) {
2615                 print_us_node(scripted, parsable, fields, types, width, node);
2616                 if (rmnode)
2617                         nvlist_free(node->usn_nvl);
2618         }
2619 }
2620
2621 static int
2622 zfs_do_userspace(int argc, char **argv)
2623 {
2624         zfs_handle_t *zhp;
2625         zfs_userquota_prop_t p;
2626         uu_avl_pool_t *avl_pool;
2627         uu_avl_t *avl_tree;
2628         uu_avl_walk_t *walk;
2629         char *delim;
2630         char deffields[] = "type,name,used,quota";
2631         char *ofield = NULL;
2632         char *tfield = NULL;
2633         int cfield = 0;
2634         int fields[256];
2635         int i;
2636         boolean_t scripted = B_FALSE;
2637         boolean_t prtnum = B_FALSE;
2638         boolean_t parsable = B_FALSE;
2639         boolean_t sid2posix = B_FALSE;
2640         int ret = 0;
2641         int c;
2642         zfs_sort_column_t *sortcol = NULL;
2643         int types = USTYPE_PSX_USR | USTYPE_SMB_USR;
2644         us_cbdata_t cb;
2645         us_node_t *node;
2646         us_node_t *rmnode;
2647         uu_list_pool_t *listpool;
2648         uu_list_t *list;
2649         uu_avl_index_t idx = 0;
2650         uu_list_index_t idx2 = 0;
2651
2652         if (argc < 2)
2653                 usage(B_FALSE);
2654
2655         if (strcmp(argv[0], "groupspace") == 0)
2656                 /* Toggle default group types */
2657                 types = USTYPE_PSX_GRP | USTYPE_SMB_GRP;
2658
2659         while ((c = getopt(argc, argv, "nHpo:s:S:t:i")) != -1) {
2660                 switch (c) {
2661                 case 'n':
2662                         prtnum = B_TRUE;
2663                         break;
2664                 case 'H':
2665                         scripted = B_TRUE;
2666                         break;
2667                 case 'p':
2668                         parsable = B_TRUE;
2669                         break;
2670                 case 'o':
2671                         ofield = optarg;
2672                         break;
2673                 case 's':
2674                 case 'S':
2675                         if (zfs_add_sort_column(&sortcol, optarg,
2676                             c == 's' ? B_FALSE : B_TRUE) != 0) {
2677                                 (void) fprintf(stderr,
2678                                     gettext("invalid field '%s'\n"), optarg);
2679                                 usage(B_FALSE);
2680                         }
2681                         break;
2682                 case 't':
2683                         tfield = optarg;
2684                         break;
2685                 case 'i':
2686                         sid2posix = B_TRUE;
2687                         break;
2688                 case ':':
2689                         (void) fprintf(stderr, gettext("missing argument for "
2690                             "'%c' option\n"), optopt);
2691                         usage(B_FALSE);
2692                         break;
2693                 case '?':
2694                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2695                             optopt);
2696                         usage(B_FALSE);
2697                 }
2698         }
2699
2700         argc -= optind;
2701         argv += optind;
2702
2703         if (argc < 1) {
2704                 (void) fprintf(stderr, gettext("missing dataset name\n"));
2705                 usage(B_FALSE);
2706         }
2707         if (argc > 1) {
2708                 (void) fprintf(stderr, gettext("too many arguments\n"));
2709                 usage(B_FALSE);
2710         }
2711
2712         /* Use default output fields if not specified using -o */
2713         if (ofield == NULL)
2714                 ofield = deffields;
2715         do {
2716                 if ((delim = strchr(ofield, ',')) != NULL)
2717                         *delim = '\0';
2718                 if ((fields[cfield++] = us_field_index(ofield)) == -1) {
2719                         (void) fprintf(stderr, gettext("invalid type '%s' "
2720                             "for -o option\n"), ofield);
2721                         return (-1);
2722                 }
2723                 if (delim != NULL)
2724                         ofield = delim + 1;
2725         } while (delim != NULL);
2726         fields[cfield] = USFIELD_LAST;
2727
2728         /* Override output types (-t option) */
2729         if (tfield != NULL) {
2730                 types = 0;
2731
2732                 do {
2733                         boolean_t found = B_FALSE;
2734
2735                         if ((delim = strchr(tfield, ',')) != NULL)
2736                                 *delim = '\0';
2737                         for (i = 0; i < sizeof (us_type_bits) / sizeof (int);
2738                             i++) {
2739                                 if (strcmp(tfield, us_type_names[i]) == 0) {
2740                                         found = B_TRUE;
2741                                         types |= us_type_bits[i];
2742                                         break;
2743                                 }
2744                         }
2745                         if (!found) {
2746                                 (void) fprintf(stderr, gettext("invalid type "
2747                                     "'%s' for -t option\n"), tfield);
2748                                 return (-1);
2749                         }
2750                         if (delim != NULL)
2751                                 tfield = delim + 1;
2752                 } while (delim != NULL);
2753         }
2754
2755         if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL)
2756                 return (1);
2757
2758         if ((avl_pool = uu_avl_pool_create("us_avl_pool", sizeof (us_node_t),
2759             offsetof(us_node_t, usn_avlnode), us_compare, UU_DEFAULT)) == NULL)
2760                 nomem();
2761         if ((avl_tree = uu_avl_create(avl_pool, NULL, UU_DEFAULT)) == NULL)
2762                 nomem();
2763
2764         /* Always add default sorting columns */
2765         (void) zfs_add_sort_column(&sortcol, "type", B_FALSE);
2766         (void) zfs_add_sort_column(&sortcol, "name", B_FALSE);
2767
2768         cb.cb_sortcol = sortcol;
2769         cb.cb_numname = prtnum;
2770         cb.cb_nicenum = !parsable;
2771         cb.cb_avl_pool = avl_pool;
2772         cb.cb_avl = avl_tree;
2773         cb.cb_sid2posix = sid2posix;
2774
2775         for (i = 0; i < USFIELD_LAST; i++)
2776                 cb.cb_width[i] = strlen(gettext(us_field_hdr[i]));
2777
2778         for (p = 0; p < ZFS_NUM_USERQUOTA_PROPS; p++) {
2779                 if (((p == ZFS_PROP_USERUSED || p == ZFS_PROP_USERQUOTA) &&
2780                     !(types & (USTYPE_PSX_USR | USTYPE_SMB_USR))) ||
2781                     ((p == ZFS_PROP_GROUPUSED || p == ZFS_PROP_GROUPQUOTA) &&
2782                     !(types & (USTYPE_PSX_GRP | USTYPE_SMB_GRP))))
2783                         continue;
2784                 cb.cb_prop = p;
2785                 if ((ret = zfs_userspace(zhp, p, userspace_cb, &cb)) != 0)
2786                         return (ret);
2787         }
2788
2789         /* Sort the list */
2790         if ((node = uu_avl_first(avl_tree)) == NULL)
2791                 return (0);
2792
2793         us_populated = B_TRUE;
2794
2795         listpool = uu_list_pool_create("tmplist", sizeof (us_node_t),
2796             offsetof(us_node_t, usn_listnode), NULL, UU_DEFAULT);
2797         list = uu_list_create(listpool, NULL, UU_DEFAULT);
2798         uu_list_node_init(node, &node->usn_listnode, listpool);
2799
2800         while (node != NULL) {
2801                 rmnode = node;
2802                 node = uu_avl_next(avl_tree, node);
2803                 uu_avl_remove(avl_tree, rmnode);
2804                 if (uu_list_find(list, rmnode, NULL, &idx2) == NULL)
2805                         uu_list_insert(list, rmnode, idx2);
2806         }
2807
2808         for (node = uu_list_first(list); node != NULL;
2809             node = uu_list_next(list, node)) {
2810                 us_sort_info_t sortinfo = { sortcol, cb.cb_numname };
2811
2812                 if (uu_avl_find(avl_tree, node, &sortinfo, &idx) == NULL)
2813                         uu_avl_insert(avl_tree, node, idx);
2814         }
2815
2816         uu_list_destroy(list);
2817         uu_list_pool_destroy(listpool);
2818
2819         /* Print and free node nvlist memory */
2820         print_us(scripted, parsable, fields, types, cb.cb_width, B_TRUE,
2821             cb.cb_avl);
2822
2823         zfs_free_sort_columns(sortcol);
2824
2825         /* Clean up the AVL tree */
2826         if ((walk = uu_avl_walk_start(cb.cb_avl, UU_WALK_ROBUST)) == NULL)
2827                 nomem();
2828
2829         while ((node = uu_avl_walk_next(walk)) != NULL) {
2830                 uu_avl_remove(cb.cb_avl, node);
2831                 free(node);
2832         }
2833
2834         uu_avl_walk_end(walk);
2835         uu_avl_destroy(avl_tree);
2836         uu_avl_pool_destroy(avl_pool);
2837
2838         return (ret);
2839 }
2840
2841 /*
2842  * list [-Hp][-r|-d max] [-o property[,...]] [-s property] ... [-S property] ...
2843  *      [-t type[,...]] [filesystem|volume|snapshot] ...
2844  *
2845  *      -H      Scripted mode; elide headers and separate columns by tabs.
2846  *      -p      Display values in parsable (literal) format.
2847  *      -r      Recurse over all children.
2848  *      -d      Limit recursion by depth.
2849  *      -o      Control which fields to display.
2850  *      -s      Specify sort columns, descending order.
2851  *      -S      Specify sort columns, ascending order.
2852  *      -t      Control which object types to display.
2853  *
2854  * When given no arguments, list all filesystems in the system.
2855  * Otherwise, list the specified datasets, optionally recursing down them if
2856  * '-r' is specified.
2857  */
2858 typedef struct list_cbdata {
2859         boolean_t       cb_first;
2860         boolean_t       cb_literal;
2861         boolean_t       cb_scripted;
2862         zprop_list_t    *cb_proplist;
2863 } list_cbdata_t;
2864
2865 /*
2866  * Given a list of columns to display, output appropriate headers for each one.
2867  */
2868 static void
2869 print_header(list_cbdata_t *cb)
2870 {
2871         zprop_list_t *pl = cb->cb_proplist;
2872         char headerbuf[ZFS_MAXPROPLEN];
2873         const char *header;
2874         int i;
2875         boolean_t first = B_TRUE;
2876         boolean_t right_justify;
2877
2878         for (; pl != NULL; pl = pl->pl_next) {
2879                 if (!first) {
2880                         (void) printf("  ");
2881                 } else {
2882                         first = B_FALSE;
2883                 }
2884
2885                 right_justify = B_FALSE;
2886                 if (pl->pl_prop != ZPROP_INVAL) {
2887                         header = zfs_prop_column_name(pl->pl_prop);
2888                         right_justify = zfs_prop_align_right(pl->pl_prop);
2889                 } else {
2890                         for (i = 0; pl->pl_user_prop[i] != '\0'; i++)
2891                                 headerbuf[i] = toupper(pl->pl_user_prop[i]);
2892                         headerbuf[i] = '\0';
2893                         header = headerbuf;
2894                 }
2895
2896                 if (pl->pl_next == NULL && !right_justify)
2897                         (void) printf("%s", header);
2898                 else if (right_justify)
2899                         (void) printf("%*s", pl->pl_width, header);
2900                 else
2901                         (void) printf("%-*s", pl->pl_width, header);
2902         }
2903
2904         (void) printf("\n");
2905 }
2906
2907 /*
2908  * Given a dataset and a list of fields, print out all the properties according
2909  * to the described layout.
2910  */
2911 static void
2912 print_dataset(zfs_handle_t *zhp, list_cbdata_t *cb)
2913 {
2914         zprop_list_t *pl = cb->cb_proplist;
2915         boolean_t first = B_TRUE;
2916         char property[ZFS_MAXPROPLEN];
2917         nvlist_t *userprops = zfs_get_user_props(zhp);
2918         nvlist_t *propval;
2919         char *propstr;
2920         boolean_t right_justify;
2921
2922         for (; pl != NULL; pl = pl->pl_next) {
2923                 if (!first) {
2924                         if (cb->cb_scripted)
2925                                 (void) printf("\t");
2926                         else
2927                                 (void) printf("  ");
2928                 } else {
2929                         first = B_FALSE;
2930                 }
2931
2932                 if (pl->pl_prop != ZPROP_INVAL) {
2933                         if (zfs_prop_get(zhp, pl->pl_prop, property,
2934                             sizeof (property), NULL, NULL, 0,
2935                             cb->cb_literal) != 0)
2936                                 propstr = "-";
2937                         else
2938                                 propstr = property;
2939                         right_justify = zfs_prop_align_right(pl->pl_prop);
2940                 } else if (zfs_prop_userquota(pl->pl_user_prop)) {
2941                         if (zfs_prop_get_userquota(zhp, pl->pl_user_prop,
2942                             property, sizeof (property), cb->cb_literal) != 0)
2943                                 propstr = "-";
2944                         else
2945                                 propstr = property;
2946                         right_justify = B_TRUE;
2947                 } else if (zfs_prop_written(pl->pl_user_prop)) {
2948                         if (zfs_prop_get_written(zhp, pl->pl_user_prop,
2949                             property, sizeof (property), cb->cb_literal) != 0)
2950                                 propstr = "-";
2951                         else
2952                                 propstr = property;
2953                         right_justify = B_TRUE;
2954                 } else {
2955                         if (nvlist_lookup_nvlist(userprops,
2956                             pl->pl_user_prop, &propval) != 0)
2957                                 propstr = "-";
2958                         else
2959                                 verify(nvlist_lookup_string(propval,
2960                                     ZPROP_VALUE, &propstr) == 0);
2961                         right_justify = B_FALSE;
2962                 }
2963
2964                 /*
2965                  * If this is being called in scripted mode, or if this is the
2966                  * last column and it is left-justified, don't include a width
2967                  * format specifier.
2968                  */
2969                 if (cb->cb_scripted || (pl->pl_next == NULL && !right_justify))
2970                         (void) printf("%s", propstr);
2971                 else if (right_justify)
2972                         (void) printf("%*s", pl->pl_width, propstr);
2973                 else
2974                         (void) printf("%-*s", pl->pl_width, propstr);
2975         }
2976
2977         (void) printf("\n");
2978 }
2979
2980 /*
2981  * Generic callback function to list a dataset or snapshot.
2982  */
2983 static int
2984 list_callback(zfs_handle_t *zhp, void *data)
2985 {
2986         list_cbdata_t *cbp = data;
2987
2988         if (cbp->cb_first) {
2989                 if (!cbp->cb_scripted)
2990                         print_header(cbp);
2991                 cbp->cb_first = B_FALSE;
2992         }
2993
2994         print_dataset(zhp, cbp);
2995
2996         return (0);
2997 }
2998
2999 static int
3000 zfs_do_list(int argc, char **argv)
3001 {
3002         int c;
3003         static char default_fields[] =
3004             "name,used,available,referenced,mountpoint";
3005         int types = ZFS_TYPE_DATASET;
3006         boolean_t types_specified = B_FALSE;
3007         char *fields = NULL;
3008         list_cbdata_t cb = { 0 };
3009         char *value;
3010         int limit = 0;
3011         int ret = 0;
3012         zfs_sort_column_t *sortcol = NULL;
3013         int flags = ZFS_ITER_PROP_LISTSNAPS | ZFS_ITER_ARGS_CAN_BE_PATHS;
3014
3015         /* check options */
3016         while ((c = getopt(argc, argv, "HS:d:o:prs:t:")) != -1) {
3017                 switch (c) {
3018                 case 'o':
3019                         fields = optarg;
3020                         break;
3021                 case 'p':
3022                         cb.cb_literal = B_TRUE;
3023                         flags |= ZFS_ITER_LITERAL_PROPS;
3024                         break;
3025                 case 'd':
3026                         limit = parse_depth(optarg, &flags);
3027                         break;
3028                 case 'r':
3029                         flags |= ZFS_ITER_RECURSE;
3030                         break;
3031                 case 'H':
3032                         cb.cb_scripted = B_TRUE;
3033                         break;
3034                 case 's':
3035                         if (zfs_add_sort_column(&sortcol, optarg,
3036                             B_FALSE) != 0) {
3037                                 (void) fprintf(stderr,
3038                                     gettext("invalid property '%s'\n"), optarg);
3039                                 usage(B_FALSE);
3040                         }
3041                         break;
3042                 case 'S':
3043                         if (zfs_add_sort_column(&sortcol, optarg,
3044                             B_TRUE) != 0) {
3045                                 (void) fprintf(stderr,
3046                                     gettext("invalid property '%s'\n"), optarg);
3047                                 usage(B_FALSE);
3048                         }
3049                         break;
3050                 case 't':
3051                         types = 0;
3052                         types_specified = B_TRUE;
3053                         flags &= ~ZFS_ITER_PROP_LISTSNAPS;
3054                         while (*optarg != '\0') {
3055                                 static char *type_subopts[] = { "filesystem",
3056                                     "volume", "snapshot", "snap", "bookmark",
3057                                     "all", NULL };
3058
3059                                 switch (getsubopt(&optarg, type_subopts,
3060                                     &value)) {
3061                                 case 0:
3062                                         types |= ZFS_TYPE_FILESYSTEM;
3063                                         break;
3064                                 case 1:
3065                                         types |= ZFS_TYPE_VOLUME;
3066                                         break;
3067                                 case 2:
3068                                 case 3:
3069                                         types |= ZFS_TYPE_SNAPSHOT;
3070                                         break;
3071                                 case 4:
3072                                         types |= ZFS_TYPE_BOOKMARK;
3073                                         break;
3074                                 case 5:
3075                                         types = ZFS_TYPE_DATASET |
3076                                             ZFS_TYPE_BOOKMARK;
3077                                         break;
3078                                 default:
3079                                         (void) fprintf(stderr,
3080                                             gettext("invalid type '%s'\n"),
3081                                             value);
3082                                         usage(B_FALSE);
3083                                 }
3084                         }
3085                         break;
3086                 case ':':
3087                         (void) fprintf(stderr, gettext("missing argument for "
3088                             "'%c' option\n"), optopt);
3089                         usage(B_FALSE);
3090                         break;
3091                 case '?':
3092                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3093                             optopt);
3094                         usage(B_FALSE);
3095                 }
3096         }
3097
3098         argc -= optind;
3099         argv += optind;
3100
3101         if (fields == NULL)
3102                 fields = default_fields;
3103
3104         /*
3105          * If "-o space" and no types were specified, don't display snapshots.
3106          */
3107         if (strcmp(fields, "space") == 0 && types_specified == B_FALSE)
3108                 types &= ~ZFS_TYPE_SNAPSHOT;
3109
3110         /*
3111          * If the user specifies '-o all', the zprop_get_list() doesn't
3112          * normally include the name of the dataset.  For 'zfs list', we always
3113          * want this property to be first.
3114          */
3115         if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
3116             != 0)
3117                 usage(B_FALSE);
3118
3119         cb.cb_first = B_TRUE;
3120
3121         ret = zfs_for_each(argc, argv, flags, types, sortcol, &cb.cb_proplist,
3122             limit, list_callback, &cb);
3123
3124         zprop_free_list(cb.cb_proplist);
3125         zfs_free_sort_columns(sortcol);
3126
3127         if (ret == 0 && cb.cb_first && !cb.cb_scripted)
3128                 (void) printf(gettext("no datasets available\n"));
3129
3130         return (ret);
3131 }
3132
3133 /*
3134  * zfs rename [-f] <fs | snap | vol> <fs | snap | vol>
3135  * zfs rename [-f] -p <fs | vol> <fs | vol>
3136  * zfs rename -r <snap> <snap>
3137  *
3138  * Renames the given dataset to another of the same type.
3139  *
3140  * The '-p' flag creates all the non-existing ancestors of the target first.
3141  */
3142 /* ARGSUSED */
3143 static int
3144 zfs_do_rename(int argc, char **argv)
3145 {
3146         zfs_handle_t *zhp;
3147         int c;
3148         int ret = 0;
3149         boolean_t recurse = B_FALSE;
3150         boolean_t parents = B_FALSE;
3151         boolean_t force_unmount = B_FALSE;
3152
3153         /* check options */
3154         while ((c = getopt(argc, argv, "prf")) != -1) {
3155                 switch (c) {
3156                 case 'p':
3157                         parents = B_TRUE;
3158                         break;
3159                 case 'r':
3160                         recurse = B_TRUE;
3161                         break;
3162                 case 'f':
3163                         force_unmount = B_TRUE;
3164                         break;
3165                 case '?':
3166                 default:
3167                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3168                             optopt);
3169                         usage(B_FALSE);
3170                 }
3171         }
3172
3173         argc -= optind;
3174         argv += optind;
3175
3176         /* check number of arguments */
3177         if (argc < 1) {
3178                 (void) fprintf(stderr, gettext("missing source dataset "
3179                     "argument\n"));
3180                 usage(B_FALSE);
3181         }
3182         if (argc < 2) {
3183                 (void) fprintf(stderr, gettext("missing target dataset "
3184                     "argument\n"));
3185                 usage(B_FALSE);
3186         }
3187         if (argc > 2) {
3188                 (void) fprintf(stderr, gettext("too many arguments\n"));
3189                 usage(B_FALSE);
3190         }
3191
3192         if (recurse && parents) {
3193                 (void) fprintf(stderr, gettext("-p and -r options are mutually "
3194                     "exclusive\n"));
3195                 usage(B_FALSE);
3196         }
3197
3198         if (recurse && strchr(argv[0], '@') == 0) {
3199                 (void) fprintf(stderr, gettext("source dataset for recursive "
3200                     "rename must be a snapshot\n"));
3201                 usage(B_FALSE);
3202         }
3203
3204         if ((zhp = zfs_open(g_zfs, argv[0], parents ? ZFS_TYPE_FILESYSTEM |
3205             ZFS_TYPE_VOLUME : ZFS_TYPE_DATASET)) == NULL)
3206                 return (1);
3207
3208         /* If we were asked and the name looks good, try to create ancestors. */
3209         if (parents && zfs_name_valid(argv[1], zfs_get_type(zhp)) &&
3210             zfs_create_ancestors(g_zfs, argv[1]) != 0) {
3211                 zfs_close(zhp);
3212                 return (1);
3213         }
3214
3215         ret = (zfs_rename(zhp, argv[1], recurse, force_unmount) != 0);
3216
3217         zfs_close(zhp);
3218         return (ret);
3219 }
3220
3221 /*
3222  * zfs promote <fs>
3223  *
3224  * Promotes the given clone fs to be the parent
3225  */
3226 /* ARGSUSED */
3227 static int
3228 zfs_do_promote(int argc, char **argv)
3229 {
3230         zfs_handle_t *zhp;
3231         int ret = 0;
3232
3233         /* check options */
3234         if (argc > 1 && argv[1][0] == '-') {
3235                 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3236                     argv[1][1]);
3237                 usage(B_FALSE);
3238         }
3239
3240         /* check number of arguments */
3241         if (argc < 2) {
3242                 (void) fprintf(stderr, gettext("missing clone filesystem"
3243                     " argument\n"));
3244                 usage(B_FALSE);
3245         }
3246         if (argc > 2) {
3247                 (void) fprintf(stderr, gettext("too many arguments\n"));
3248                 usage(B_FALSE);
3249         }
3250
3251         zhp = zfs_open(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3252         if (zhp == NULL)
3253                 return (1);
3254
3255         ret = (zfs_promote(zhp) != 0);
3256
3257
3258         zfs_close(zhp);
3259         return (ret);
3260 }
3261
3262 /*
3263  * zfs rollback [-rRf] <snapshot>
3264  *
3265  *      -r      Delete any intervening snapshots before doing rollback
3266  *      -R      Delete any snapshots and their clones
3267  *      -f      ignored for backwards compatability
3268  *
3269  * Given a filesystem, rollback to a specific snapshot, discarding any changes
3270  * since then and making it the active dataset.  If more recent snapshots exist,
3271  * the command will complain unless the '-r' flag is given.
3272  */
3273 typedef struct rollback_cbdata {
3274         uint64_t        cb_create;
3275         boolean_t       cb_first;
3276         int             cb_doclones;
3277         char            *cb_target;
3278         int             cb_error;
3279         boolean_t       cb_recurse;
3280 } rollback_cbdata_t;
3281
3282 static int
3283 rollback_check_dependent(zfs_handle_t *zhp, void *data)
3284 {
3285         rollback_cbdata_t *cbp = data;
3286
3287         if (cbp->cb_first && cbp->cb_recurse) {
3288                 (void) fprintf(stderr, gettext("cannot rollback to "
3289                     "'%s': clones of previous snapshots exist\n"),
3290                     cbp->cb_target);
3291                 (void) fprintf(stderr, gettext("use '-R' to "
3292                     "force deletion of the following clones and "
3293                     "dependents:\n"));
3294                 cbp->cb_first = 0;
3295                 cbp->cb_error = 1;
3296         }
3297
3298         (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
3299
3300         zfs_close(zhp);
3301         return (0);
3302 }
3303
3304 /*
3305  * Report any snapshots more recent than the one specified.  Used when '-r' is
3306  * not specified.  We reuse this same callback for the snapshot dependents - if
3307  * 'cb_dependent' is set, then this is a dependent and we should report it
3308  * without checking the transaction group.
3309  */
3310 static int
3311 rollback_check(zfs_handle_t *zhp, void *data)
3312 {
3313         rollback_cbdata_t *cbp = data;
3314
3315         if (cbp->cb_doclones) {
3316                 zfs_close(zhp);
3317                 return (0);
3318         }
3319
3320         if (zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > cbp->cb_create) {
3321                 if (cbp->cb_first && !cbp->cb_recurse) {
3322                         (void) fprintf(stderr, gettext("cannot "
3323                             "rollback to '%s': more recent snapshots "
3324                             "or bookmarks exist\n"),
3325                             cbp->cb_target);
3326                         (void) fprintf(stderr, gettext("use '-r' to "
3327                             "force deletion of the following "
3328                             "snapshots and bookmarks:\n"));
3329                         cbp->cb_first = 0;
3330                         cbp->cb_error = 1;
3331                 }
3332
3333                 if (cbp->cb_recurse) {
3334                         if (zfs_iter_dependents(zhp, B_TRUE,
3335                             rollback_check_dependent, cbp) != 0) {
3336                                 zfs_close(zhp);
3337                                 return (-1);
3338                         }
3339                 } else {
3340                         (void) fprintf(stderr, "%s\n",
3341                             zfs_get_name(zhp));
3342                 }
3343         }
3344         zfs_close(zhp);
3345         return (0);
3346 }
3347
3348 static int
3349 zfs_do_rollback(int argc, char **argv)
3350 {
3351         int ret = 0;
3352         int c;
3353         boolean_t force = B_FALSE;
3354         rollback_cbdata_t cb = { 0 };
3355         zfs_handle_t *zhp, *snap;
3356         char parentname[ZFS_MAXNAMELEN];
3357         char *delim;
3358
3359         /* check options */
3360         while ((c = getopt(argc, argv, "rRf")) != -1) {
3361                 switch (c) {
3362                 case 'r':
3363                         cb.cb_recurse = 1;
3364                         break;
3365                 case 'R':
3366                         cb.cb_recurse = 1;
3367                         cb.cb_doclones = 1;
3368                         break;
3369                 case 'f':
3370                         force = B_TRUE;
3371                         break;
3372                 case '?':
3373                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3374                             optopt);
3375                         usage(B_FALSE);
3376                 }
3377         }
3378
3379         argc -= optind;
3380         argv += optind;
3381
3382         /* check number of arguments */
3383         if (argc < 1) {
3384                 (void) fprintf(stderr, gettext("missing dataset argument\n"));
3385                 usage(B_FALSE);
3386         }
3387         if (argc > 1) {
3388                 (void) fprintf(stderr, gettext("too many arguments\n"));
3389                 usage(B_FALSE);
3390         }
3391
3392         /* open the snapshot */
3393         if ((snap = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
3394                 return (1);
3395
3396         /* open the parent dataset */
3397         (void) strlcpy(parentname, argv[0], sizeof (parentname));
3398         verify((delim = strrchr(parentname, '@')) != NULL);
3399         *delim = '\0';
3400         if ((zhp = zfs_open(g_zfs, parentname, ZFS_TYPE_DATASET)) == NULL) {
3401                 zfs_close(snap);
3402                 return (1);
3403         }
3404
3405         /*
3406          * Check for more recent snapshots and/or clones based on the presence
3407          * of '-r' and '-R'.
3408          */
3409         cb.cb_target = argv[0];
3410         cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG);
3411         cb.cb_first = B_TRUE;
3412         cb.cb_error = 0;
3413         if ((ret = zfs_iter_snapshots(zhp, rollback_check, &cb)) != 0)
3414                 goto out;
3415         if ((ret = zfs_iter_bookmarks(zhp, rollback_check, &cb)) != 0)
3416                 goto out;
3417
3418         if ((ret = cb.cb_error) != 0)
3419                 goto out;
3420
3421         /*
3422          * Rollback parent to the given snapshot.
3423          */
3424         ret = zfs_rollback(zhp, snap, force);
3425
3426 out:
3427         zfs_close(snap);
3428         zfs_close(zhp);
3429
3430         if (ret == 0)
3431                 return (0);
3432         else
3433                 return (1);
3434 }
3435
3436 /*
3437  * zfs set property=value { fs | snap | vol } ...
3438  *
3439  * Sets the given property for all datasets specified on the command line.
3440  */
3441 typedef struct set_cbdata {
3442         char            *cb_propname;
3443         char            *cb_value;
3444 } set_cbdata_t;
3445
3446 static int
3447 set_callback(zfs_handle_t *zhp, void *data)
3448 {
3449         set_cbdata_t *cbp = data;
3450
3451         if (zfs_prop_set(zhp, cbp->cb_propname, cbp->cb_value) != 0) {
3452                 switch (libzfs_errno(g_zfs)) {
3453                 case EZFS_MOUNTFAILED:
3454                         (void) fprintf(stderr, gettext("property may be set "
3455                             "but unable to remount filesystem\n"));
3456                         break;
3457                 case EZFS_SHARENFSFAILED:
3458                         (void) fprintf(stderr, gettext("property may be set "
3459                             "but unable to reshare filesystem\n"));
3460                         break;
3461                 }
3462                 return (1);
3463         }
3464         return (0);
3465 }
3466
3467 static int
3468 zfs_do_set(int argc, char **argv)
3469 {
3470         set_cbdata_t cb;
3471         int ret = 0;
3472
3473         /* check for options */
3474         if (argc > 1 && argv[1][0] == '-') {
3475                 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3476                     argv[1][1]);
3477                 usage(B_FALSE);
3478         }
3479
3480         /* check number of arguments */
3481         if (argc < 2) {
3482                 (void) fprintf(stderr, gettext("missing property=value "
3483                     "argument\n"));
3484                 usage(B_FALSE);
3485         }
3486         if (argc < 3) {
3487                 (void) fprintf(stderr, gettext("missing dataset name\n"));
3488                 usage(B_FALSE);
3489         }
3490
3491         /* validate property=value argument */
3492         cb.cb_propname = argv[1];
3493         if (((cb.cb_value = strchr(cb.cb_propname, '=')) == NULL) ||
3494             (cb.cb_value[1] == '\0')) {
3495                 (void) fprintf(stderr, gettext("missing value in "
3496                     "property=value argument\n"));
3497                 usage(B_FALSE);
3498         }
3499
3500         *cb.cb_value = '\0';
3501         cb.cb_value++;
3502
3503         if (*cb.cb_propname == '\0') {
3504                 (void) fprintf(stderr,
3505                     gettext("missing property in property=value argument\n"));
3506                 usage(B_FALSE);
3507         }
3508
3509         ret = zfs_for_each(argc - 2, argv + 2, NULL,
3510             ZFS_TYPE_DATASET, NULL, NULL, 0, set_callback, &cb);
3511
3512         return (ret);
3513 }
3514
3515 typedef struct snap_cbdata {
3516         nvlist_t *sd_nvl;
3517         boolean_t sd_recursive;
3518         const char *sd_snapname;
3519 } snap_cbdata_t;
3520
3521 static int
3522 zfs_snapshot_cb(zfs_handle_t *zhp, void *arg)
3523 {
3524         snap_cbdata_t *sd = arg;
3525         char *name;
3526         int rv = 0;
3527         int error;
3528
3529         if (sd->sd_recursive &&
3530             zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) != 0) {
3531                 zfs_close(zhp);
3532                 return (0);
3533         }
3534
3535         error = asprintf(&name, "%s@%s", zfs_get_name(zhp), sd->sd_snapname);
3536         if (error == -1)
3537                 nomem();
3538         fnvlist_add_boolean(sd->sd_nvl, name);
3539         free(name);
3540
3541         if (sd->sd_recursive)
3542                 rv = zfs_iter_filesystems(zhp, zfs_snapshot_cb, sd);
3543         zfs_close(zhp);
3544         return (rv);
3545 }
3546
3547 /*
3548  * zfs snapshot [-r] [-o prop=value] ... <fs@snap>
3549  *
3550  * Creates a snapshot with the given name.  While functionally equivalent to
3551  * 'zfs create', it is a separate command to differentiate intent.
3552  */
3553 static int
3554 zfs_do_snapshot(int argc, char **argv)
3555 {
3556         int ret = 0;
3557         char c;
3558         nvlist_t *props;
3559         snap_cbdata_t sd = { 0 };
3560         boolean_t multiple_snaps = B_FALSE;
3561
3562         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
3563                 nomem();
3564         if (nvlist_alloc(&sd.sd_nvl, NV_UNIQUE_NAME, 0) != 0)
3565                 nomem();
3566
3567         /* check options */
3568         while ((c = getopt(argc, argv, "ro:")) != -1) {
3569                 switch (c) {
3570                 case 'o':
3571                         if (parseprop(props))
3572                                 return (1);
3573                         break;
3574                 case 'r':
3575                         sd.sd_recursive = B_TRUE;
3576                         multiple_snaps = B_TRUE;
3577                         break;
3578                 case '?':
3579                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3580                             optopt);
3581                         goto usage;
3582                 }
3583         }
3584
3585         argc -= optind;
3586         argv += optind;
3587
3588         /* check number of arguments */
3589         if (argc < 1) {
3590                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
3591                 goto usage;
3592         }
3593
3594         if (argc > 1)
3595                 multiple_snaps = B_TRUE;
3596         for (; argc > 0; argc--, argv++) {
3597                 char *atp;
3598                 zfs_handle_t *zhp;
3599
3600                 atp = strchr(argv[0], '@');
3601                 if (atp == NULL)
3602                         goto usage;
3603                 *atp = '\0';
3604                 sd.sd_snapname = atp + 1;
3605                 zhp = zfs_open(g_zfs, argv[0],
3606                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3607                 if (zhp == NULL)
3608                         goto usage;
3609                 if (zfs_snapshot_cb(zhp, &sd) != 0)
3610                         goto usage;
3611         }
3612
3613         ret = zfs_snapshot_nvl(g_zfs, sd.sd_nvl, props);
3614         nvlist_free(sd.sd_nvl);
3615         nvlist_free(props);
3616         if (ret != 0 && multiple_snaps)
3617                 (void) fprintf(stderr, gettext("no snapshots were created\n"));
3618         return (ret != 0);
3619
3620 usage:
3621         nvlist_free(sd.sd_nvl);
3622         nvlist_free(props);
3623         usage(B_FALSE);
3624         return (-1);
3625 }
3626
3627 /*
3628  * Send a backup stream to stdout.
3629  */
3630 static int
3631 zfs_do_send(int argc, char **argv)
3632 {
3633         char *fromname = NULL;
3634         char *toname = NULL;
3635         char *cp;
3636         zfs_handle_t *zhp;
3637         sendflags_t flags = { 0 };
3638         int c, err;
3639         nvlist_t *dbgnv = NULL;
3640         boolean_t extraverbose = B_FALSE;
3641
3642         /* check options */
3643         while ((c = getopt(argc, argv, ":i:I:RDpvnPLe")) != -1) {
3644                 switch (c) {
3645                 case 'i':
3646                         if (fromname)
3647                                 usage(B_FALSE);
3648                         fromname = optarg;
3649                         break;
3650                 case 'I':
3651                         if (fromname)
3652                                 usage(B_FALSE);
3653                         fromname = optarg;
3654                         flags.doall = B_TRUE;
3655                         break;
3656                 case 'R':
3657                         flags.replicate = B_TRUE;
3658                         break;
3659                 case 'p':
3660                         flags.props = B_TRUE;
3661                         break;
3662                 case 'P':
3663                         flags.parsable = B_TRUE;
3664                         flags.verbose = B_TRUE;
3665                         break;
3666                 case 'v':
3667                         if (flags.verbose)
3668                                 extraverbose = B_TRUE;
3669                         flags.verbose = B_TRUE;
3670                         flags.progress = B_TRUE;
3671                         break;
3672                 case 'D':
3673                         flags.dedup = B_TRUE;
3674                         break;
3675                 case 'n':
3676                         flags.dryrun = B_TRUE;
3677                         break;
3678                 case 'L':
3679                         flags.largeblock = B_TRUE;
3680                         break;
3681                 case 'e':
3682                         flags.embed_data = B_TRUE;
3683                         break;
3684                 case ':':
3685                         (void) fprintf(stderr, gettext("missing argument for "
3686                             "'%c' option\n"), optopt);
3687                         usage(B_FALSE);
3688                         break;
3689                 case '?':
3690                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3691                             optopt);
3692                         usage(B_FALSE);
3693                 }
3694         }
3695
3696         argc -= optind;
3697         argv += optind;
3698
3699         /* check number of arguments */
3700         if (argc < 1) {
3701                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
3702                 usage(B_FALSE);
3703         }
3704         if (argc > 1) {
3705                 (void) fprintf(stderr, gettext("too many arguments\n"));
3706                 usage(B_FALSE);
3707         }
3708
3709         if (!flags.dryrun && isatty(STDOUT_FILENO)) {
3710                 (void) fprintf(stderr,
3711                     gettext("Error: Stream can not be written to a terminal.\n"
3712                     "You must redirect standard output.\n"));
3713                 return (1);
3714         }
3715
3716         /*
3717          * Special case sending a filesystem, or from a bookmark.
3718          */
3719         if (strchr(argv[0], '@') == NULL ||
3720             (fromname && strchr(fromname, '#') != NULL)) {
3721                 char frombuf[ZFS_MAXNAMELEN];
3722                 enum lzc_send_flags lzc_flags = 0;
3723
3724                 if (flags.replicate || flags.doall || flags.props ||
3725                     flags.dedup || flags.dryrun || flags.verbose ||
3726                     flags.progress) {
3727                         (void) fprintf(stderr,
3728                             gettext("Error: "
3729                             "Unsupported flag with filesystem or bookmark.\n"));
3730                         return (1);
3731                 }
3732
3733                 zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET);
3734                 if (zhp == NULL)
3735                         return (1);
3736
3737                 if (flags.largeblock)
3738                         lzc_flags |= LZC_SEND_FLAG_LARGE_BLOCK;
3739                 if (flags.embed_data)
3740                         lzc_flags |= LZC_SEND_FLAG_EMBED_DATA;
3741
3742                 if (fromname != NULL &&
3743                     (fromname[0] == '#' || fromname[0] == '@')) {
3744                         /*
3745                          * Incremental source name begins with # or @.
3746                          * Default to same fs as target.
3747                          */
3748                         (void) strncpy(frombuf, argv[0], sizeof (frombuf));
3749                         cp = strchr(frombuf, '@');
3750                         if (cp != NULL)
3751                                 *cp = '\0';
3752                         (void) strlcat(frombuf, fromname, sizeof (frombuf));
3753                         fromname = frombuf;
3754                 }
3755                 err = zfs_send_one(zhp, fromname, STDOUT_FILENO, lzc_flags);
3756                 zfs_close(zhp);
3757                 return (err != 0);
3758         }
3759
3760         cp = strchr(argv[0], '@');
3761         *cp = '\0';
3762         toname = cp + 1;
3763         zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3764         if (zhp == NULL)
3765                 return (1);
3766
3767         /*
3768          * If they specified the full path to the snapshot, chop off
3769          * everything except the short name of the snapshot, but special
3770          * case if they specify the origin.
3771          */
3772         if (fromname && (cp = strchr(fromname, '@')) != NULL) {
3773                 char origin[ZFS_MAXNAMELEN];
3774                 zprop_source_t src;
3775
3776                 (void) zfs_prop_get(zhp, ZFS_PROP_ORIGIN,
3777                     origin, sizeof (origin), &src, NULL, 0, B_FALSE);
3778
3779                 if (strcmp(origin, fromname) == 0) {
3780                         fromname = NULL;
3781                         flags.fromorigin = B_TRUE;
3782                 } else {
3783                         *cp = '\0';
3784                         if (cp != fromname && strcmp(argv[0], fromname)) {
3785                                 (void) fprintf(stderr,
3786                                     gettext("incremental source must be "
3787                                     "in same filesystem\n"));
3788                                 usage(B_FALSE);
3789                         }
3790                         fromname = cp + 1;
3791                         if (strchr(fromname, '@') || strchr(fromname, '/')) {
3792                                 (void) fprintf(stderr,
3793                                     gettext("invalid incremental source\n"));
3794                                 usage(B_FALSE);
3795                         }
3796                 }
3797         }
3798
3799         if (flags.replicate && fromname == NULL)
3800                 flags.doall = B_TRUE;
3801
3802         err = zfs_send(zhp, fromname, toname, &flags, STDOUT_FILENO, NULL, 0,
3803             extraverbose ? &dbgnv : NULL);
3804
3805         if (extraverbose && dbgnv != NULL) {
3806                 /*
3807                  * dump_nvlist prints to stdout, but that's been
3808                  * redirected to a file.  Make it print to stderr
3809                  * instead.
3810                  */
3811                 (void) dup2(STDERR_FILENO, STDOUT_FILENO);
3812                 dump_nvlist(dbgnv, 0);
3813                 nvlist_free(dbgnv);
3814         }
3815         zfs_close(zhp);
3816
3817         return (err != 0);
3818 }
3819
3820 /*
3821  * zfs receive [-vnFu] [-d | -e] <fs@snap>
3822  *
3823  * Restore a backup stream from stdin.
3824  */
3825 static int
3826 zfs_do_receive(int argc, char **argv)
3827 {
3828         int c, err;
3829         recvflags_t flags = { 0 };
3830
3831         /* check options */
3832         while ((c = getopt(argc, argv, ":denuvF")) != -1) {
3833                 switch (c) {
3834                 case 'd':
3835                         flags.isprefix = B_TRUE;
3836                         break;
3837                 case 'e':
3838                         flags.isprefix = B_TRUE;
3839                         flags.istail = B_TRUE;
3840                         break;
3841                 case 'n':
3842                         flags.dryrun = B_TRUE;
3843                         break;
3844                 case 'u':
3845                         flags.nomount = B_TRUE;
3846                         break;
3847                 case 'v':
3848                         flags.verbose = B_TRUE;
3849                         break;
3850                 case 'F':
3851                         flags.force = B_TRUE;
3852                         break;
3853                 case ':':
3854                         (void) fprintf(stderr, gettext("missing argument for "
3855                             "'%c' option\n"), optopt);
3856                         usage(B_FALSE);
3857                         break;
3858                 case '?':
3859                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3860                             optopt);
3861                         usage(B_FALSE);
3862                 }
3863         }
3864
3865         argc -= optind;
3866         argv += optind;
3867
3868         /* check number of arguments */
3869         if (argc < 1) {
3870                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
3871                 usage(B_FALSE);
3872         }
3873         if (argc > 1) {
3874                 (void) fprintf(stderr, gettext("too many arguments\n"));
3875                 usage(B_FALSE);
3876         }
3877
3878         if (isatty(STDIN_FILENO)) {
3879                 (void) fprintf(stderr,
3880                     gettext("Error: Backup stream can not be read "
3881                     "from a terminal.\n"
3882                     "You must redirect standard input.\n"));
3883                 return (1);
3884         }
3885
3886         err = zfs_receive(g_zfs, argv[0], &flags, STDIN_FILENO, NULL);
3887
3888         return (err != 0);
3889 }
3890
3891 /*
3892  * allow/unallow stuff
3893  */
3894 /* copied from zfs/sys/dsl_deleg.h */
3895 #define ZFS_DELEG_PERM_CREATE           "create"
3896 #define ZFS_DELEG_PERM_DESTROY          "destroy"
3897 #define ZFS_DELEG_PERM_SNAPSHOT         "snapshot"
3898 #define ZFS_DELEG_PERM_ROLLBACK         "rollback"
3899 #define ZFS_DELEG_PERM_CLONE            "clone"
3900 #define ZFS_DELEG_PERM_PROMOTE          "promote"
3901 #define ZFS_DELEG_PERM_RENAME           "rename"
3902 #define ZFS_DELEG_PERM_MOUNT            "mount"
3903 #define ZFS_DELEG_PERM_SHARE            "share"
3904 #define ZFS_DELEG_PERM_SEND             "send"
3905 #define ZFS_DELEG_PERM_RECEIVE          "receive"
3906 #define ZFS_DELEG_PERM_ALLOW            "allow"
3907 #define ZFS_DELEG_PERM_USERPROP         "userprop"
3908 #define ZFS_DELEG_PERM_VSCAN            "vscan" /* ??? */
3909 #define ZFS_DELEG_PERM_USERQUOTA        "userquota"
3910 #define ZFS_DELEG_PERM_GROUPQUOTA       "groupquota"
3911 #define ZFS_DELEG_PERM_USERUSED         "userused"
3912 #define ZFS_DELEG_PERM_GROUPUSED        "groupused"
3913 #define ZFS_DELEG_PERM_HOLD             "hold"
3914 #define ZFS_DELEG_PERM_RELEASE          "release"
3915 #define ZFS_DELEG_PERM_DIFF             "diff"
3916 #define ZFS_DELEG_PERM_BOOKMARK         "bookmark"
3917
3918 #define ZFS_NUM_DELEG_NOTES ZFS_DELEG_NOTE_NONE
3919
3920 static zfs_deleg_perm_tab_t zfs_deleg_perm_tbl[] = {
3921         { ZFS_DELEG_PERM_ALLOW, ZFS_DELEG_NOTE_ALLOW },
3922         { ZFS_DELEG_PERM_CLONE, ZFS_DELEG_NOTE_CLONE },
3923         { ZFS_DELEG_PERM_CREATE, ZFS_DELEG_NOTE_CREATE },
3924         { ZFS_DELEG_PERM_DESTROY, ZFS_DELEG_NOTE_DESTROY },
3925         { ZFS_DELEG_PERM_DIFF, ZFS_DELEG_NOTE_DIFF},
3926         { ZFS_DELEG_PERM_HOLD, ZFS_DELEG_NOTE_HOLD },
3927         { ZFS_DELEG_PERM_MOUNT, ZFS_DELEG_NOTE_MOUNT },
3928         { ZFS_DELEG_PERM_PROMOTE, ZFS_DELEG_NOTE_PROMOTE },
3929         { ZFS_DELEG_PERM_RECEIVE, ZFS_DELEG_NOTE_RECEIVE },
3930         { ZFS_DELEG_PERM_RELEASE, ZFS_DELEG_NOTE_RELEASE },
3931         { ZFS_DELEG_PERM_RENAME, ZFS_DELEG_NOTE_RENAME },
3932         { ZFS_DELEG_PERM_ROLLBACK, ZFS_DELEG_NOTE_ROLLBACK },
3933         { ZFS_DELEG_PERM_SEND, ZFS_DELEG_NOTE_SEND },
3934         { ZFS_DELEG_PERM_SHARE, ZFS_DELEG_NOTE_SHARE },
3935         { ZFS_DELEG_PERM_SNAPSHOT, ZFS_DELEG_NOTE_SNAPSHOT },
3936         { ZFS_DELEG_PERM_BOOKMARK, ZFS_DELEG_NOTE_BOOKMARK },
3937
3938         { ZFS_DELEG_PERM_GROUPQUOTA, ZFS_DELEG_NOTE_GROUPQUOTA },
3939         { ZFS_DELEG_PERM_GROUPUSED, ZFS_DELEG_NOTE_GROUPUSED },
3940         { ZFS_DELEG_PERM_USERPROP, ZFS_DELEG_NOTE_USERPROP },
3941         { ZFS_DELEG_PERM_USERQUOTA, ZFS_DELEG_NOTE_USERQUOTA },
3942         { ZFS_DELEG_PERM_USERUSED, ZFS_DELEG_NOTE_USERUSED },
3943         { NULL, ZFS_DELEG_NOTE_NONE }
3944 };
3945
3946 /* permission structure */
3947 typedef struct deleg_perm {
3948         zfs_deleg_who_type_t    dp_who_type;
3949         const char              *dp_name;
3950         boolean_t               dp_local;
3951         boolean_t               dp_descend;
3952 } deleg_perm_t;
3953
3954 /* */
3955 typedef struct deleg_perm_node {
3956         deleg_perm_t            dpn_perm;
3957
3958         uu_avl_node_t           dpn_avl_node;
3959 } deleg_perm_node_t;
3960
3961 typedef struct fs_perm fs_perm_t;
3962
3963 /* permissions set */
3964 typedef struct who_perm {
3965         zfs_deleg_who_type_t    who_type;
3966         const char              *who_name;              /* id */
3967         char                    who_ug_name[256];       /* user/group name */
3968         fs_perm_t               *who_fsperm;            /* uplink */
3969
3970         uu_avl_t                *who_deleg_perm_avl;    /* permissions */
3971 } who_perm_t;
3972
3973 /* */
3974 typedef struct who_perm_node {
3975         who_perm_t      who_perm;
3976         uu_avl_node_t   who_avl_node;
3977 } who_perm_node_t;
3978
3979 typedef struct fs_perm_set fs_perm_set_t;
3980 /* fs permissions */
3981 struct fs_perm {
3982         const char              *fsp_name;
3983
3984         uu_avl_t                *fsp_sc_avl;    /* sets,create */
3985         uu_avl_t                *fsp_uge_avl;   /* user,group,everyone */
3986
3987         fs_perm_set_t           *fsp_set;       /* uplink */
3988 };
3989
3990 /* */
3991 typedef struct fs_perm_node {
3992         fs_perm_t       fspn_fsperm;
3993         uu_avl_t        *fspn_avl;
3994
3995         uu_list_node_t  fspn_list_node;
3996 } fs_perm_node_t;
3997
3998 /* top level structure */
3999 struct fs_perm_set {
4000         uu_list_pool_t  *fsps_list_pool;
4001         uu_list_t       *fsps_list; /* list of fs_perms */
4002
4003         uu_avl_pool_t   *fsps_named_set_avl_pool;
4004         uu_avl_pool_t   *fsps_who_perm_avl_pool;
4005         uu_avl_pool_t   *fsps_deleg_perm_avl_pool;
4006 };
4007
4008 static inline const char *
4009 deleg_perm_type(zfs_deleg_note_t note)
4010 {
4011         /* subcommands */
4012         switch (note) {
4013                 /* SUBCOMMANDS */
4014                 /* OTHER */
4015         case ZFS_DELEG_NOTE_GROUPQUOTA:
4016         case ZFS_DELEG_NOTE_GROUPUSED:
4017         case ZFS_DELEG_NOTE_USERPROP:
4018         case ZFS_DELEG_NOTE_USERQUOTA:
4019         case ZFS_DELEG_NOTE_USERUSED:
4020                 /* other */
4021                 return (gettext("other"));
4022         default:
4023                 return (gettext("subcommand"));
4024         }
4025 }
4026
4027 static int inline
4028 who_type2weight(zfs_deleg_who_type_t who_type)
4029 {
4030         int res;
4031         switch (who_type) {
4032                 case ZFS_DELEG_NAMED_SET_SETS:
4033                 case ZFS_DELEG_NAMED_SET:
4034                         res = 0;
4035                         break;
4036                 case ZFS_DELEG_CREATE_SETS:
4037                 case ZFS_DELEG_CREATE:
4038                         res = 1;
4039                         break;
4040                 case ZFS_DELEG_USER_SETS:
4041                 case ZFS_DELEG_USER:
4042                         res = 2;
4043                         break;
4044                 case ZFS_DELEG_GROUP_SETS:
4045                 case ZFS_DELEG_GROUP:
4046                         res = 3;
4047                         break;
4048                 case ZFS_DELEG_EVERYONE_SETS:
4049                 case ZFS_DELEG_EVERYONE:
4050                         res = 4;
4051                         break;
4052                 default:
4053                         res = -1;
4054         }
4055
4056         return (res);
4057 }
4058
4059 /* ARGSUSED */
4060 static int
4061 who_perm_compare(const void *larg, const void *rarg, void *unused)
4062 {
4063         const who_perm_node_t *l = larg;
4064         const who_perm_node_t *r = rarg;
4065         zfs_deleg_who_type_t ltype = l->who_perm.who_type;
4066         zfs_deleg_who_type_t rtype = r->who_perm.who_type;
4067         int lweight = who_type2weight(ltype);
4068         int rweight = who_type2weight(rtype);
4069         int res = lweight - rweight;
4070         if (res == 0)
4071                 res = strncmp(l->who_perm.who_name, r->who_perm.who_name,
4072                     ZFS_MAX_DELEG_NAME-1);
4073
4074         if (res == 0)
4075                 return (0);
4076         if (res > 0)
4077                 return (1);
4078         else
4079                 return (-1);
4080 }
4081
4082 /* ARGSUSED */
4083 static int
4084 deleg_perm_compare(const void *larg, const void *rarg, void *unused)
4085 {
4086         const deleg_perm_node_t *l = larg;
4087         const deleg_perm_node_t *r = rarg;
4088         int res =  strncmp(l->dpn_perm.dp_name, r->dpn_perm.dp_name,
4089             ZFS_MAX_DELEG_NAME-1);
4090
4091         if (res == 0)
4092                 return (0);
4093
4094         if (res > 0)
4095                 return (1);
4096         else
4097                 return (-1);
4098 }
4099
4100 static inline void
4101 fs_perm_set_init(fs_perm_set_t *fspset)
4102 {
4103         bzero(fspset, sizeof (fs_perm_set_t));
4104
4105         if ((fspset->fsps_list_pool = uu_list_pool_create("fsps_list_pool",
4106             sizeof (fs_perm_node_t), offsetof(fs_perm_node_t, fspn_list_node),
4107             NULL, UU_DEFAULT)) == NULL)
4108                 nomem();
4109         if ((fspset->fsps_list = uu_list_create(fspset->fsps_list_pool, NULL,
4110             UU_DEFAULT)) == NULL)
4111                 nomem();
4112
4113         if ((fspset->fsps_named_set_avl_pool = uu_avl_pool_create(
4114             "named_set_avl_pool", sizeof (who_perm_node_t), offsetof(
4115             who_perm_node_t, who_avl_node), who_perm_compare,
4116             UU_DEFAULT)) == NULL)
4117                 nomem();
4118
4119         if ((fspset->fsps_who_perm_avl_pool = uu_avl_pool_create(
4120             "who_perm_avl_pool", sizeof (who_perm_node_t), offsetof(
4121             who_perm_node_t, who_avl_node), who_perm_compare,
4122             UU_DEFAULT)) == NULL)
4123                 nomem();
4124
4125         if ((fspset->fsps_deleg_perm_avl_pool = uu_avl_pool_create(
4126             "deleg_perm_avl_pool", sizeof (deleg_perm_node_t), offsetof(
4127             deleg_perm_node_t, dpn_avl_node), deleg_perm_compare, UU_DEFAULT))
4128             == NULL)
4129                 nomem();
4130 }
4131
4132 static inline void fs_perm_fini(fs_perm_t *);
4133 static inline void who_perm_fini(who_perm_t *);
4134
4135 static inline void
4136 fs_perm_set_fini(fs_perm_set_t *fspset)
4137 {
4138         fs_perm_node_t *node = uu_list_first(fspset->fsps_list);
4139
4140         while (node != NULL) {
4141                 fs_perm_node_t *next_node =
4142                     uu_list_next(fspset->fsps_list, node);
4143                 fs_perm_t *fsperm = &node->fspn_fsperm;
4144                 fs_perm_fini(fsperm);
4145                 uu_list_remove(fspset->fsps_list, node);
4146                 free(node);
4147                 node = next_node;
4148         }
4149
4150         uu_avl_pool_destroy(fspset->fsps_named_set_avl_pool);
4151         uu_avl_pool_destroy(fspset->fsps_who_perm_avl_pool);
4152         uu_avl_pool_destroy(fspset->fsps_deleg_perm_avl_pool);
4153 }
4154
4155 static inline void
4156 deleg_perm_init(deleg_perm_t *deleg_perm, zfs_deleg_who_type_t type,
4157     const char *name)
4158 {
4159         deleg_perm->dp_who_type = type;
4160         deleg_perm->dp_name = name;
4161 }
4162
4163 static inline void
4164 who_perm_init(who_perm_t *who_perm, fs_perm_t *fsperm,
4165     zfs_deleg_who_type_t type, const char *name)
4166 {
4167         uu_avl_pool_t   *pool;
4168         pool = fsperm->fsp_set->fsps_deleg_perm_avl_pool;
4169
4170         bzero(who_perm, sizeof (who_perm_t));
4171
4172         if ((who_perm->who_deleg_perm_avl = uu_avl_create(pool, NULL,
4173             UU_DEFAULT)) == NULL)
4174                 nomem();
4175
4176         who_perm->who_type = type;
4177         who_perm->who_name = name;
4178         who_perm->who_fsperm = fsperm;
4179 }
4180
4181 static inline void
4182 who_perm_fini(who_perm_t *who_perm)
4183 {
4184         deleg_perm_node_t *node = uu_avl_first(who_perm->who_deleg_perm_avl);
4185
4186         while (node != NULL) {
4187                 deleg_perm_node_t *next_node =
4188                     uu_avl_next(who_perm->who_deleg_perm_avl, node);
4189
4190                 uu_avl_remove(who_perm->who_deleg_perm_avl, node);
4191                 free(node);
4192                 node = next_node;
4193         }
4194
4195         uu_avl_destroy(who_perm->who_deleg_perm_avl);
4196 }
4197
4198 static inline void
4199 fs_perm_init(fs_perm_t *fsperm, fs_perm_set_t *fspset, const char *fsname)
4200 {
4201         uu_avl_pool_t   *nset_pool = fspset->fsps_named_set_avl_pool;
4202         uu_avl_pool_t   *who_pool = fspset->fsps_who_perm_avl_pool;
4203
4204         bzero(fsperm, sizeof (fs_perm_t));
4205
4206         if ((fsperm->fsp_sc_avl = uu_avl_create(nset_pool, NULL, UU_DEFAULT))
4207             == NULL)
4208                 nomem();
4209
4210         if ((fsperm->fsp_uge_avl = uu_avl_create(who_pool, NULL, UU_DEFAULT))
4211             == NULL)
4212                 nomem();
4213
4214         fsperm->fsp_set = fspset;
4215         fsperm->fsp_name = fsname;
4216 }
4217
4218 static inline void
4219 fs_perm_fini(fs_perm_t *fsperm)
4220 {
4221         who_perm_node_t *node = uu_avl_first(fsperm->fsp_sc_avl);
4222         while (node != NULL) {
4223                 who_perm_node_t *next_node = uu_avl_next(fsperm->fsp_sc_avl,
4224                     node);
4225                 who_perm_t *who_perm = &node->who_perm;
4226                 who_perm_fini(who_perm);
4227                 uu_avl_remove(fsperm->fsp_sc_avl, node);
4228                 free(node);
4229                 node = next_node;
4230         }
4231
4232         node = uu_avl_first(fsperm->fsp_uge_avl);
4233         while (node != NULL) {
4234                 who_perm_node_t *next_node = uu_avl_next(fsperm->fsp_uge_avl,
4235                     node);
4236                 who_perm_t *who_perm = &node->who_perm;
4237                 who_perm_fini(who_perm);
4238                 uu_avl_remove(fsperm->fsp_uge_avl, node);
4239                 free(node);
4240                 node = next_node;
4241         }
4242
4243         uu_avl_destroy(fsperm->fsp_sc_avl);
4244         uu_avl_destroy(fsperm->fsp_uge_avl);
4245 }
4246
4247 static void inline
4248 set_deleg_perm_node(uu_avl_t *avl, deleg_perm_node_t *node,
4249     zfs_deleg_who_type_t who_type, const char *name, char locality)
4250 {
4251         uu_avl_index_t idx = 0;
4252
4253         deleg_perm_node_t *found_node = NULL;
4254         deleg_perm_t    *deleg_perm = &node->dpn_perm;
4255
4256         deleg_perm_init(deleg_perm, who_type, name);
4257
4258         if ((found_node = uu_avl_find(avl, node, NULL, &idx))
4259             == NULL)
4260                 uu_avl_insert(avl, node, idx);
4261         else {
4262                 node = found_node;
4263                 deleg_perm = &node->dpn_perm;
4264         }
4265
4266
4267         switch (locality) {
4268         case ZFS_DELEG_LOCAL:
4269                 deleg_perm->dp_local = B_TRUE;
4270                 break;
4271         case ZFS_DELEG_DESCENDENT:
4272                 deleg_perm->dp_descend = B_TRUE;
4273                 break;
4274         case ZFS_DELEG_NA:
4275                 break;
4276         default:
4277                 assert(B_FALSE); /* invalid locality */
4278         }
4279 }
4280
4281 static inline int
4282 parse_who_perm(who_perm_t *who_perm, nvlist_t *nvl, char locality)
4283 {
4284         nvpair_t *nvp = NULL;
4285         fs_perm_set_t *fspset = who_perm->who_fsperm->fsp_set;
4286         uu_avl_t *avl = who_perm->who_deleg_perm_avl;
4287         zfs_deleg_who_type_t who_type = who_perm->who_type;
4288
4289         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4290                 const char *name = nvpair_name(nvp);
4291                 data_type_t type = nvpair_type(nvp);
4292                 uu_avl_pool_t *avl_pool = fspset->fsps_deleg_perm_avl_pool;
4293                 deleg_perm_node_t *node =
4294                     safe_malloc(sizeof (deleg_perm_node_t));
4295
4296                 assert(type == DATA_TYPE_BOOLEAN);
4297
4298                 uu_avl_node_init(node, &node->dpn_avl_node, avl_pool);
4299                 set_deleg_perm_node(avl, node, who_type, name, locality);
4300         }
4301
4302         return (0);
4303 }
4304
4305 static inline int
4306 parse_fs_perm(fs_perm_t *fsperm, nvlist_t *nvl)
4307 {
4308         nvpair_t *nvp = NULL;
4309         fs_perm_set_t *fspset = fsperm->fsp_set;
4310
4311         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4312                 nvlist_t *nvl2 = NULL;
4313                 const char *name = nvpair_name(nvp);
4314                 uu_avl_t *avl = NULL;
4315                 uu_avl_pool_t *avl_pool;
4316                 zfs_deleg_who_type_t perm_type = name[0];
4317                 char perm_locality = name[1];
4318                 const char *perm_name = name + 3;
4319                 boolean_t is_set = B_TRUE;
4320                 who_perm_t *who_perm = NULL;
4321
4322                 assert('$' == name[2]);
4323
4324                 if (nvpair_value_nvlist(nvp, &nvl2) != 0)
4325                         return (-1);
4326
4327                 switch (perm_type) {
4328                 case ZFS_DELEG_CREATE:
4329                 case ZFS_DELEG_CREATE_SETS:
4330                 case ZFS_DELEG_NAMED_SET:
4331                 case ZFS_DELEG_NAMED_SET_SETS:
4332                         avl_pool = fspset->fsps_named_set_avl_pool;
4333                         avl = fsperm->fsp_sc_avl;
4334                         break;
4335                 case ZFS_DELEG_USER:
4336                 case ZFS_DELEG_USER_SETS:
4337                 case ZFS_DELEG_GROUP:
4338                 case ZFS_DELEG_GROUP_SETS:
4339                 case ZFS_DELEG_EVERYONE:
4340                 case ZFS_DELEG_EVERYONE_SETS:
4341                         avl_pool = fspset->fsps_who_perm_avl_pool;
4342                         avl = fsperm->fsp_uge_avl;
4343                         break;
4344                 }
4345
4346                 if (is_set) {
4347                         who_perm_node_t *found_node = NULL;
4348                         who_perm_node_t *node = safe_malloc(
4349                             sizeof (who_perm_node_t));
4350                         who_perm = &node->who_perm;
4351                         uu_avl_index_t idx = 0;
4352
4353                         uu_avl_node_init(node, &node->who_avl_node, avl_pool);
4354                         who_perm_init(who_perm, fsperm, perm_type, perm_name);
4355
4356                         if ((found_node = uu_avl_find(avl, node, NULL, &idx))
4357                             == NULL) {
4358                                 if (avl == fsperm->fsp_uge_avl) {
4359                                         uid_t rid = 0;
4360                                         struct passwd *p = NULL;
4361                                         struct group *g = NULL;
4362                                         const char *nice_name = NULL;
4363
4364                                         switch (perm_type) {
4365                                         case ZFS_DELEG_USER_SETS:
4366                                         case ZFS_DELEG_USER:
4367                                                 rid = atoi(perm_name);
4368                                                 p = getpwuid(rid);
4369                                                 if (p)
4370                                                         nice_name = p->pw_name;
4371                                                 break;
4372                                         case ZFS_DELEG_GROUP_SETS:
4373                                         case ZFS_DELEG_GROUP:
4374                                                 rid = atoi(perm_name);
4375                                                 g = getgrgid(rid);
4376                                                 if (g)
4377                                                         nice_name = g->gr_name;
4378                                                 break;
4379                                         }
4380
4381                                         if (nice_name != NULL)
4382                                                 (void) strlcpy(
4383                                                     node->who_perm.who_ug_name,
4384                                                     nice_name, 256);
4385                                 }
4386
4387                                 uu_avl_insert(avl, node, idx);
4388                         } else {
4389                                 node = found_node;
4390                                 who_perm = &node->who_perm;
4391                         }
4392                 }
4393
4394                 (void) parse_who_perm(who_perm, nvl2, perm_locality);
4395         }
4396
4397         return (0);
4398 }
4399
4400 static inline int
4401 parse_fs_perm_set(fs_perm_set_t *fspset, nvlist_t *nvl)
4402 {
4403         nvpair_t *nvp = NULL;
4404         uu_avl_index_t idx = 0;
4405
4406         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4407                 nvlist_t *nvl2 = NULL;
4408                 const char *fsname = nvpair_name(nvp);
4409                 data_type_t type = nvpair_type(nvp);
4410                 fs_perm_t *fsperm = NULL;
4411                 fs_perm_node_t *node = safe_malloc(sizeof (fs_perm_node_t));
4412                 if (node == NULL)
4413                         nomem();
4414
4415                 fsperm = &node->fspn_fsperm;
4416
4417                 assert(DATA_TYPE_NVLIST == type);
4418
4419                 uu_list_node_init(node, &node->fspn_list_node,
4420                     fspset->fsps_list_pool);
4421
4422                 idx = uu_list_numnodes(fspset->fsps_list);
4423                 fs_perm_init(fsperm, fspset, fsname);
4424
4425                 if (nvpair_value_nvlist(nvp, &nvl2) != 0)
4426                         return (-1);
4427
4428                 (void) parse_fs_perm(fsperm, nvl2);
4429
4430                 uu_list_insert(fspset->fsps_list, node, idx);
4431         }
4432
4433         return (0);
4434 }
4435
4436 static inline const char *
4437 deleg_perm_comment(zfs_deleg_note_t note)
4438 {
4439         const char *str = "";
4440
4441         /* subcommands */
4442         switch (note) {
4443                 /* SUBCOMMANDS */
4444         case ZFS_DELEG_NOTE_ALLOW:
4445                 str = gettext("Must also have the permission that is being"
4446                     "\n\t\t\t\tallowed");
4447                 break;
4448         case ZFS_DELEG_NOTE_CLONE:
4449                 str = gettext("Must also have the 'create' ability and 'mount'"
4450                     "\n\t\t\t\tability in the origin file system");
4451                 break;
4452         case ZFS_DELEG_NOTE_CREATE:
4453                 str = gettext("Must also have the 'mount' ability");
4454                 break;
4455         case ZFS_DELEG_NOTE_DESTROY:
4456                 str = gettext("Must also have the 'mount' ability");
4457                 break;
4458         case ZFS_DELEG_NOTE_DIFF:
4459                 str = gettext("Allows lookup of paths within a dataset;"
4460                     "\n\t\t\t\tgiven an object number. Ordinary users need this"
4461                     "\n\t\t\t\tin order to use zfs diff");
4462                 break;
4463         case ZFS_DELEG_NOTE_HOLD:
4464                 str = gettext("Allows adding a user hold to a snapshot");
4465                 break;
4466         case ZFS_DELEG_NOTE_MOUNT:
4467                 str = gettext("Allows mount/umount of ZFS datasets");
4468                 break;
4469         case ZFS_DELEG_NOTE_PROMOTE:
4470                 str = gettext("Must also have the 'mount'\n\t\t\t\tand"
4471                     " 'promote' ability in the origin file system");
4472                 break;
4473         case ZFS_DELEG_NOTE_RECEIVE:
4474                 str = gettext("Must also have the 'mount' and 'create'"
4475                     " ability");
4476                 break;
4477         case ZFS_DELEG_NOTE_RELEASE:
4478                 str = gettext("Allows releasing a user hold which\n\t\t\t\t"
4479                     "might destroy the snapshot");
4480                 break;
4481         case ZFS_DELEG_NOTE_RENAME:
4482                 str = gettext("Must also have the 'mount' and 'create'"
4483                     "\n\t\t\t\tability in the new parent");
4484                 break;
4485         case ZFS_DELEG_NOTE_ROLLBACK:
4486                 str = gettext("");
4487                 break;
4488         case ZFS_DELEG_NOTE_SEND:
4489                 str = gettext("");
4490                 break;
4491         case ZFS_DELEG_NOTE_SHARE:
4492                 str = gettext("Allows sharing file systems over NFS or SMB"
4493                     "\n\t\t\t\tprotocols");
4494                 break;
4495         case ZFS_DELEG_NOTE_SNAPSHOT:
4496                 str = gettext("");
4497                 break;
4498 /*
4499  *      case ZFS_DELEG_NOTE_VSCAN:
4500  *              str = gettext("");
4501  *              break;
4502  */
4503                 /* OTHER */
4504         case ZFS_DELEG_NOTE_GROUPQUOTA:
4505                 str = gettext("Allows accessing any groupquota@... property");
4506                 break;
4507         case ZFS_DELEG_NOTE_GROUPUSED:
4508                 str = gettext("Allows reading any groupused@... property");
4509                 break;
4510         case ZFS_DELEG_NOTE_USERPROP:
4511                 str = gettext("Allows changing any user property");
4512                 break;
4513         case ZFS_DELEG_NOTE_USERQUOTA:
4514                 str = gettext("Allows accessing any userquota@... property");
4515                 break;
4516         case ZFS_DELEG_NOTE_USERUSED:
4517                 str = gettext("Allows reading any userused@... property");
4518                 break;
4519                 /* other */
4520         default:
4521                 str = "";
4522         }
4523
4524         return (str);
4525 }
4526
4527 struct allow_opts {
4528         boolean_t local;
4529         boolean_t descend;
4530         boolean_t user;
4531         boolean_t group;
4532         boolean_t everyone;
4533         boolean_t create;
4534         boolean_t set;
4535         boolean_t recursive; /* unallow only */
4536         boolean_t prt_usage;
4537
4538         boolean_t prt_perms;
4539         char *who;
4540         char *perms;
4541         const char *dataset;
4542 };
4543
4544 static inline int
4545 prop_cmp(const void *a, const void *b)
4546 {
4547         const char *str1 = *(const char **)a;
4548         const char *str2 = *(const char **)b;
4549         return (strcmp(str1, str2));
4550 }
4551
4552 static void
4553 allow_usage(boolean_t un, boolean_t requested, const char *msg)
4554 {
4555         const char *opt_desc[] = {
4556                 "-h", gettext("show this help message and exit"),
4557                 "-l", gettext("set permission locally"),
4558                 "-d", gettext("set permission for descents"),
4559                 "-u", gettext("set permission for user"),
4560                 "-g", gettext("set permission for group"),
4561                 "-e", gettext("set permission for everyone"),
4562                 "-c", gettext("set create time permission"),
4563                 "-s", gettext("define permission set"),
4564                 /* unallow only */
4565                 "-r", gettext("remove permissions recursively"),
4566         };
4567         size_t unallow_size = sizeof (opt_desc) / sizeof (char *);
4568         size_t allow_size = unallow_size - 2;
4569         const char *props[ZFS_NUM_PROPS];
4570         int i;
4571         size_t count = 0;
4572         FILE *fp = requested ? stdout : stderr;
4573         zprop_desc_t *pdtbl = zfs_prop_get_table();
4574         const char *fmt = gettext("%-16s %-14s\t%s\n");
4575
4576         (void) fprintf(fp, gettext("Usage: %s\n"), get_usage(un ? HELP_UNALLOW :
4577             HELP_ALLOW));
4578         (void) fprintf(fp, gettext("Options:\n"));
4579         for (int i = 0; i < (un ? unallow_size : allow_size); i++) {
4580                 const char *opt = opt_desc[i++];
4581                 const char *optdsc = opt_desc[i];
4582                 (void) fprintf(fp, gettext("  %-10s  %s\n"), opt, optdsc);
4583         }
4584
4585         (void) fprintf(fp, gettext("\nThe following permissions are "
4586             "supported:\n\n"));
4587         (void) fprintf(fp, fmt, gettext("NAME"), gettext("TYPE"),
4588             gettext("NOTES"));
4589         for (i = 0; i < ZFS_NUM_DELEG_NOTES; i++) {
4590                 const char *perm_name = zfs_deleg_perm_tbl[i].z_perm;
4591                 zfs_deleg_note_t perm_note = zfs_deleg_perm_tbl[i].z_note;
4592                 const char *perm_type = deleg_perm_type(perm_note);
4593                 const char *perm_comment = deleg_perm_comment(perm_note);
4594                 (void) fprintf(fp, fmt, perm_name, perm_type, perm_comment);
4595         }
4596
4597         for (i = 0; i < ZFS_NUM_PROPS; i++) {
4598                 zprop_desc_t *pd = &pdtbl[i];
4599                 if (pd->pd_visible != B_TRUE)
4600                         continue;
4601
4602                 if (pd->pd_attr == PROP_READONLY)
4603                         continue;
4604
4605                 props[count++] = pd->pd_name;
4606         }
4607         props[count] = NULL;
4608
4609         qsort(props, count, sizeof (char *), prop_cmp);
4610
4611         for (i = 0; i < count; i++)
4612                 (void) fprintf(fp, fmt, props[i], gettext("property"), "");
4613
4614         if (msg != NULL)
4615                 (void) fprintf(fp, gettext("\nzfs: error: %s"), msg);
4616
4617         exit(requested ? 0 : 2);
4618 }
4619
4620 static inline const char *
4621 munge_args(int argc, char **argv, boolean_t un, size_t expected_argc,
4622     char **permsp)
4623 {
4624         if (un && argc == expected_argc - 1)
4625                 *permsp = NULL;
4626         else if (argc == expected_argc)
4627                 *permsp = argv[argc - 2];
4628         else
4629                 allow_usage(un, B_FALSE,
4630                     gettext("wrong number of parameters\n"));
4631
4632         return (argv[argc - 1]);
4633 }
4634
4635 static void
4636 parse_allow_args(int argc, char **argv, boolean_t un, struct allow_opts *opts)
4637 {
4638         int uge_sum = opts->user + opts->group + opts->everyone;
4639         int csuge_sum = opts->create + opts->set + uge_sum;
4640         int ldcsuge_sum = csuge_sum + opts->local + opts->descend;
4641         int all_sum = un ? ldcsuge_sum + opts->recursive : ldcsuge_sum;
4642
4643         if (uge_sum > 1)
4644                 allow_usage(un, B_FALSE,
4645                     gettext("-u, -g, and -e are mutually exclusive\n"));
4646
4647         if (opts->prt_usage)
4648                 if (argc == 0 && all_sum == 0)
4649                         allow_usage(un, B_TRUE, NULL);
4650                 else
4651                         usage(B_FALSE);
4652
4653         if (opts->set) {
4654                 if (csuge_sum > 1)
4655                         allow_usage(un, B_FALSE,
4656                             gettext("invalid options combined with -s\n"));
4657
4658                 opts->dataset = munge_args(argc, argv, un, 3, &opts->perms);
4659                 if (argv[0][0] != '@')
4660                         allow_usage(un, B_FALSE,
4661                             gettext("invalid set name: missing '@' prefix\n"));
4662                 opts->who = argv[0];
4663         } else if (opts->create) {
4664                 if (ldcsuge_sum > 1)
4665                         allow_usage(un, B_FALSE,
4666                             gettext("invalid options combined with -c\n"));
4667                 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
4668         } else if (opts->everyone) {
4669                 if (csuge_sum > 1)
4670                         allow_usage(un, B_FALSE,
4671                             gettext("invalid options combined with -e\n"));
4672                 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
4673         } else if (uge_sum == 0 && argc > 0 && strcmp(argv[0], "everyone")
4674             == 0) {
4675                 opts->everyone = B_TRUE;
4676                 argc--;
4677                 argv++;
4678                 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
4679         } else if (argc == 1 && !un) {
4680                 opts->prt_perms = B_TRUE;
4681                 opts->dataset = argv[argc-1];
4682         } else {
4683                 opts->dataset = munge_args(argc, argv, un, 3, &opts->perms);
4684                 opts->who = argv[0];
4685         }
4686
4687         if (!opts->local && !opts->descend) {
4688                 opts->local = B_TRUE;
4689                 opts->descend = B_TRUE;
4690         }
4691 }
4692
4693 static void
4694 store_allow_perm(zfs_deleg_who_type_t type, boolean_t local, boolean_t descend,
4695     const char *who, char *perms, nvlist_t *top_nvl)
4696 {
4697         int i;
4698         char ld[2] = { '\0', '\0' };
4699         char who_buf[ZFS_MAXNAMELEN+32];
4700         char base_type;
4701         char set_type;
4702         nvlist_t *base_nvl = NULL;
4703         nvlist_t *set_nvl = NULL;
4704         nvlist_t *nvl;
4705
4706         if (nvlist_alloc(&base_nvl, NV_UNIQUE_NAME, 0) != 0)
4707                 nomem();
4708         if (nvlist_alloc(&set_nvl, NV_UNIQUE_NAME, 0) !=  0)
4709                 nomem();
4710
4711         switch (type) {
4712         case ZFS_DELEG_NAMED_SET_SETS:
4713         case ZFS_DELEG_NAMED_SET:
4714                 set_type = ZFS_DELEG_NAMED_SET_SETS;
4715                 base_type = ZFS_DELEG_NAMED_SET;
4716                 ld[0] = ZFS_DELEG_NA;
4717                 break;
4718         case ZFS_DELEG_CREATE_SETS:
4719         case ZFS_DELEG_CREATE:
4720                 set_type = ZFS_DELEG_CREATE_SETS;
4721                 base_type = ZFS_DELEG_CREATE;
4722                 ld[0] = ZFS_DELEG_NA;
4723                 break;
4724         case ZFS_DELEG_USER_SETS:
4725         case ZFS_DELEG_USER:
4726                 set_type = ZFS_DELEG_USER_SETS;
4727                 base_type = ZFS_DELEG_USER;
4728                 if (local)
4729                         ld[0] = ZFS_DELEG_LOCAL;
4730                 if (descend)
4731                         ld[1] = ZFS_DELEG_DESCENDENT;
4732                 break;
4733         case ZFS_DELEG_GROUP_SETS:
4734         case ZFS_DELEG_GROUP:
4735                 set_type = ZFS_DELEG_GROUP_SETS;
4736                 base_type = ZFS_DELEG_GROUP;
4737                 if (local)
4738                         ld[0] = ZFS_DELEG_LOCAL;
4739                 if (descend)
4740                         ld[1] = ZFS_DELEG_DESCENDENT;
4741                 break;
4742         case ZFS_DELEG_EVERYONE_SETS:
4743         case ZFS_DELEG_EVERYONE:
4744                 set_type = ZFS_DELEG_EVERYONE_SETS;
4745                 base_type = ZFS_DELEG_EVERYONE;
4746                 if (local)
4747                         ld[0] = ZFS_DELEG_LOCAL;
4748                 if (descend)
4749                         ld[1] = ZFS_DELEG_DESCENDENT;
4750         }
4751
4752         if (perms != NULL) {
4753                 char *curr = perms;
4754                 char *end = curr + strlen(perms);
4755
4756                 while (curr < end) {
4757                         char *delim = strchr(curr, ',');
4758                         if (delim == NULL)
4759                                 delim = end;
4760                         else
4761                                 *delim = '\0';
4762
4763                         if (curr[0] == '@')
4764                                 nvl = set_nvl;
4765                         else
4766                                 nvl = base_nvl;
4767
4768                         (void) nvlist_add_boolean(nvl, curr);
4769                         if (delim != end)
4770                                 *delim = ',';
4771                         curr = delim + 1;
4772                 }
4773
4774                 for (i = 0; i < 2; i++) {
4775                         char locality = ld[i];
4776                         if (locality == 0)
4777                                 continue;
4778
4779                         if (!nvlist_empty(base_nvl)) {
4780                                 if (who != NULL)
4781                                         (void) snprintf(who_buf,
4782                                             sizeof (who_buf), "%c%c$%s",
4783                                             base_type, locality, who);
4784                                 else
4785                                         (void) snprintf(who_buf,
4786                                             sizeof (who_buf), "%c%c$",
4787                                             base_type, locality);
4788
4789                                 (void) nvlist_add_nvlist(top_nvl, who_buf,
4790                                     base_nvl);
4791                         }
4792
4793
4794                         if (!nvlist_empty(set_nvl)) {
4795                                 if (who != NULL)
4796                                         (void) snprintf(who_buf,
4797                                             sizeof (who_buf), "%c%c$%s",
4798                                             set_type, locality, who);
4799                                 else
4800                                         (void) snprintf(who_buf,
4801                                             sizeof (who_buf), "%c%c$",
4802                                             set_type, locality);
4803
4804                                 (void) nvlist_add_nvlist(top_nvl, who_buf,
4805                                     set_nvl);
4806                         }
4807                 }
4808         } else {
4809                 for (i = 0; i < 2; i++) {
4810                         char locality = ld[i];
4811                         if (locality == 0)
4812                                 continue;
4813
4814                         if (who != NULL)
4815                                 (void) snprintf(who_buf, sizeof (who_buf),
4816                                     "%c%c$%s", base_type, locality, who);
4817                         else
4818                                 (void) snprintf(who_buf, sizeof (who_buf),
4819                                     "%c%c$", base_type, locality);
4820                         (void) nvlist_add_boolean(top_nvl, who_buf);
4821
4822                         if (who != NULL)
4823                                 (void) snprintf(who_buf, sizeof (who_buf),
4824                                     "%c%c$%s", set_type, locality, who);
4825                         else
4826                                 (void) snprintf(who_buf, sizeof (who_buf),
4827                                     "%c%c$", set_type, locality);
4828                         (void) nvlist_add_boolean(top_nvl, who_buf);
4829                 }
4830         }
4831 }
4832
4833 static int
4834 construct_fsacl_list(boolean_t un, struct allow_opts *opts, nvlist_t **nvlp)
4835 {
4836         if (nvlist_alloc(nvlp, NV_UNIQUE_NAME, 0) != 0)
4837                 nomem();
4838
4839         if (opts->set) {
4840                 store_allow_perm(ZFS_DELEG_NAMED_SET, opts->local,
4841                     opts->descend, opts->who, opts->perms, *nvlp);
4842         } else if (opts->create) {
4843                 store_allow_perm(ZFS_DELEG_CREATE, opts->local,
4844                     opts->descend, NULL, opts->perms, *nvlp);
4845         } else if (opts->everyone) {
4846                 store_allow_perm(ZFS_DELEG_EVERYONE, opts->local,
4847                     opts->descend, NULL, opts->perms, *nvlp);
4848         } else {
4849                 char *curr = opts->who;
4850                 char *end = curr + strlen(curr);
4851
4852                 while (curr < end) {
4853                         const char *who;
4854                         zfs_deleg_who_type_t who_type;
4855                         char *endch;
4856                         char *delim = strchr(curr, ',');
4857                         char errbuf[256];
4858                         char id[64];
4859                         struct passwd *p = NULL;
4860                         struct group *g = NULL;
4861
4862                         uid_t rid;
4863                         if (delim == NULL)
4864                                 delim = end;
4865                         else
4866                                 *delim = '\0';
4867
4868                         rid = (uid_t)strtol(curr, &endch, 0);
4869                         if (opts->user) {
4870                                 who_type = ZFS_DELEG_USER;
4871                                 if (*endch != '\0')
4872                                         p = getpwnam(curr);
4873                                 else
4874                                         p = getpwuid(rid);
4875
4876                                 if (p != NULL)
4877                                         rid = p->pw_uid;
4878                                 else {
4879                                         (void) snprintf(errbuf, 256, gettext(
4880                                             "invalid user %s"), curr);
4881                                         allow_usage(un, B_TRUE, errbuf);
4882                                 }
4883                         } else if (opts->group) {
4884                                 who_type = ZFS_DELEG_GROUP;
4885                                 if (*endch != '\0')
4886                                         g = getgrnam(curr);
4887                                 else
4888                                         g = getgrgid(rid);
4889
4890                                 if (g != NULL)
4891                                         rid = g->gr_gid;
4892                                 else {
4893                                         (void) snprintf(errbuf, 256, gettext(
4894                                             "invalid group %s"),  curr);
4895                                         allow_usage(un, B_TRUE, errbuf);
4896                                 }
4897                         } else {
4898                                 if (*endch != '\0') {
4899                                         p = getpwnam(curr);
4900                                 } else {
4901                                         p = getpwuid(rid);
4902                                 }
4903
4904                                 if (p == NULL)
4905                                         if (*endch != '\0') {
4906                                                 g = getgrnam(curr);
4907                                         } else {
4908                                                 g = getgrgid(rid);
4909                                         }
4910
4911                                 if (p != NULL) {
4912                                         who_type = ZFS_DELEG_USER;
4913                                         rid = p->pw_uid;
4914                                 } else if (g != NULL) {
4915                                         who_type = ZFS_DELEG_GROUP;
4916                                         rid = g->gr_gid;
4917                                 } else {
4918                                         (void) snprintf(errbuf, 256, gettext(
4919                                             "invalid user/group %s"), curr);
4920                                         allow_usage(un, B_TRUE, errbuf);
4921                                 }
4922                         }
4923
4924                         (void) sprintf(id, "%u", rid);
4925                         who = id;
4926
4927                         store_allow_perm(who_type, opts->local,
4928                             opts->descend, who, opts->perms, *nvlp);
4929                         curr = delim + 1;
4930                 }
4931         }
4932
4933         return (0);
4934 }
4935
4936 static void
4937 print_set_creat_perms(uu_avl_t *who_avl)
4938 {
4939         const char *sc_title[] = {
4940                 gettext("Permission sets:\n"),
4941                 gettext("Create time permissions:\n"),
4942                 NULL
4943         };
4944         const char **title_ptr = sc_title;
4945         who_perm_node_t *who_node = NULL;
4946         int prev_weight = -1;
4947
4948         for (who_node = uu_avl_first(who_avl); who_node != NULL;
4949             who_node = uu_avl_next(who_avl, who_node)) {
4950                 uu_avl_t *avl = who_node->who_perm.who_deleg_perm_avl;
4951                 zfs_deleg_who_type_t who_type = who_node->who_perm.who_type;
4952                 const char *who_name = who_node->who_perm.who_name;
4953                 int weight = who_type2weight(who_type);
4954                 boolean_t first = B_TRUE;
4955                 deleg_perm_node_t *deleg_node;
4956
4957                 if (prev_weight != weight) {
4958                         (void) printf(*title_ptr++);
4959                         prev_weight = weight;
4960                 }
4961
4962                 if (who_name == NULL || strnlen(who_name, 1) == 0)
4963                         (void) printf("\t");
4964                 else
4965                         (void) printf("\t%s ", who_name);
4966
4967                 for (deleg_node = uu_avl_first(avl); deleg_node != NULL;
4968                     deleg_node = uu_avl_next(avl, deleg_node)) {
4969                         if (first) {
4970                                 (void) printf("%s",
4971                                     deleg_node->dpn_perm.dp_name);
4972                                 first = B_FALSE;
4973                         } else
4974                                 (void) printf(",%s",
4975                                     deleg_node->dpn_perm.dp_name);
4976                 }
4977
4978                 (void) printf("\n");
4979         }
4980 }
4981
4982 static void inline
4983 print_uge_deleg_perms(uu_avl_t *who_avl, boolean_t local, boolean_t descend,
4984     const char *title)
4985 {
4986         who_perm_node_t *who_node = NULL;
4987         boolean_t prt_title = B_TRUE;
4988         uu_avl_walk_t *walk;
4989
4990         if ((walk = uu_avl_walk_start(who_avl, UU_WALK_ROBUST)) == NULL)
4991                 nomem();
4992
4993         while ((who_node = uu_avl_walk_next(walk)) != NULL) {
4994                 const char *who_name = who_node->who_perm.who_name;
4995                 const char *nice_who_name = who_node->who_perm.who_ug_name;
4996                 uu_avl_t *avl = who_node->who_perm.who_deleg_perm_avl;
4997                 zfs_deleg_who_type_t who_type = who_node->who_perm.who_type;
4998                 char delim = ' ';
4999                 deleg_perm_node_t *deleg_node;
5000                 boolean_t prt_who = B_TRUE;
5001
5002                 for (deleg_node = uu_avl_first(avl);
5003                     deleg_node != NULL;
5004                     deleg_node = uu_avl_next(avl, deleg_node)) {
5005                         if (local != deleg_node->dpn_perm.dp_local ||
5006                             descend != deleg_node->dpn_perm.dp_descend)
5007                                 continue;
5008
5009                         if (prt_who) {
5010                                 const char *who = NULL;
5011                                 if (prt_title) {
5012                                         prt_title = B_FALSE;
5013                                         (void) printf(title);
5014                                 }
5015
5016                                 switch (who_type) {
5017                                 case ZFS_DELEG_USER_SETS:
5018                                 case ZFS_DELEG_USER:
5019                                         who = gettext("user");
5020                                         if (nice_who_name)
5021                                                 who_name  = nice_who_name;
5022                                         break;
5023                                 case ZFS_DELEG_GROUP_SETS:
5024                                 case ZFS_DELEG_GROUP:
5025                                         who = gettext("group");
5026                                         if (nice_who_name)
5027                                                 who_name  = nice_who_name;
5028                                         break;
5029                                 case ZFS_DELEG_EVERYONE_SETS:
5030                                 case ZFS_DELEG_EVERYONE:
5031                                         who = gettext("everyone");
5032                                         who_name = NULL;
5033                                 }
5034
5035                                 prt_who = B_FALSE;
5036                                 if (who_name == NULL)
5037                                         (void) printf("\t%s", who);
5038                                 else
5039                                         (void) printf("\t%s %s", who, who_name);
5040                         }
5041
5042                         (void) printf("%c%s", delim,
5043                             deleg_node->dpn_perm.dp_name);
5044                         delim = ',';
5045                 }
5046
5047                 if (!prt_who)
5048                         (void) printf("\n");
5049         }
5050
5051         uu_avl_walk_end(walk);
5052 }
5053
5054 static void
5055 print_fs_perms(fs_perm_set_t *fspset)
5056 {
5057         fs_perm_node_t *node = NULL;
5058         char buf[ZFS_MAXNAMELEN+32];
5059         const char *dsname = buf;
5060
5061         for (node = uu_list_first(fspset->fsps_list); node != NULL;
5062             node = uu_list_next(fspset->fsps_list, node)) {
5063                 uu_avl_t *sc_avl = node->fspn_fsperm.fsp_sc_avl;
5064                 uu_avl_t *uge_avl = node->fspn_fsperm.fsp_uge_avl;
5065                 int left = 0;
5066
5067                 (void) snprintf(buf, ZFS_MAXNAMELEN+32,
5068                     gettext("---- Permissions on %s "),
5069                     node->fspn_fsperm.fsp_name);
5070                 (void) printf(dsname);
5071                 left = 70 - strlen(buf);
5072                 while (left-- > 0)
5073                         (void) printf("-");
5074                 (void) printf("\n");
5075
5076                 print_set_creat_perms(sc_avl);
5077                 print_uge_deleg_perms(uge_avl, B_TRUE, B_FALSE,
5078                     gettext("Local permissions:\n"));
5079                 print_uge_deleg_perms(uge_avl, B_FALSE, B_TRUE,
5080                     gettext("Descendent permissions:\n"));
5081                 print_uge_deleg_perms(uge_avl, B_TRUE, B_TRUE,
5082                     gettext("Local+Descendent permissions:\n"));
5083         }
5084 }
5085
5086 static fs_perm_set_t fs_perm_set = { NULL, NULL, NULL, NULL };
5087
5088 struct deleg_perms {
5089         boolean_t un;
5090         nvlist_t *nvl;
5091 };
5092
5093 static int
5094 set_deleg_perms(zfs_handle_t *zhp, void *data)
5095 {
5096         struct deleg_perms *perms = (struct deleg_perms *)data;
5097         zfs_type_t zfs_type = zfs_get_type(zhp);
5098
5099         if (zfs_type != ZFS_TYPE_FILESYSTEM && zfs_type != ZFS_TYPE_VOLUME)
5100                 return (0);
5101
5102         return (zfs_set_fsacl(zhp, perms->un, perms->nvl));
5103 }
5104
5105 static int
5106 zfs_do_allow_unallow_impl(int argc, char **argv, boolean_t un)
5107 {
5108         zfs_handle_t *zhp;
5109         nvlist_t *perm_nvl = NULL;
5110         nvlist_t *update_perm_nvl = NULL;
5111         int error = 1;
5112         int c;
5113         struct allow_opts opts = { 0 };
5114
5115         const char *optstr = un ? "ldugecsrh" : "ldugecsh";
5116
5117         /* check opts */
5118         while ((c = getopt(argc, argv, optstr)) != -1) {
5119                 switch (c) {
5120                 case 'l':
5121                         opts.local = B_TRUE;
5122                         break;
5123                 case 'd':
5124                         opts.descend = B_TRUE;
5125                         break;
5126                 case 'u':
5127                         opts.user = B_TRUE;
5128                         break;
5129                 case 'g':
5130                         opts.group = B_TRUE;
5131                         break;
5132                 case 'e':
5133                         opts.everyone = B_TRUE;
5134                         break;
5135                 case 's':
5136                         opts.set = B_TRUE;
5137                         break;
5138                 case 'c':
5139                         opts.create = B_TRUE;
5140                         break;
5141                 case 'r':
5142                         opts.recursive = B_TRUE;
5143                         break;
5144                 case ':':
5145                         (void) fprintf(stderr, gettext("missing argument for "
5146                             "'%c' option\n"), optopt);
5147                         usage(B_FALSE);
5148                         break;
5149                 case 'h':
5150                         opts.prt_usage = B_TRUE;
5151                         break;
5152                 case '?':
5153                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5154                             optopt);
5155                         usage(B_FALSE);
5156                 }
5157         }
5158
5159         argc -= optind;
5160         argv += optind;
5161
5162         /* check arguments */
5163         parse_allow_args(argc, argv, un, &opts);
5164
5165         /* try to open the dataset */
5166         if ((zhp = zfs_open(g_zfs, opts.dataset, ZFS_TYPE_FILESYSTEM |
5167             ZFS_TYPE_VOLUME)) == NULL) {
5168                 (void) fprintf(stderr, "Failed to open dataset: %s\n",
5169                     opts.dataset);
5170                 return (-1);
5171         }
5172
5173         if (zfs_get_fsacl(zhp, &perm_nvl) != 0)
5174                 goto cleanup2;
5175
5176         fs_perm_set_init(&fs_perm_set);
5177         if (parse_fs_perm_set(&fs_perm_set, perm_nvl) != 0) {
5178                 (void) fprintf(stderr, "Failed to parse fsacl permissions\n");
5179                 goto cleanup1;
5180         }
5181
5182         if (opts.prt_perms)
5183                 print_fs_perms(&fs_perm_set);
5184         else {
5185                 (void) construct_fsacl_list(un, &opts, &update_perm_nvl);
5186                 if (zfs_set_fsacl(zhp, un, update_perm_nvl) != 0)
5187                         goto cleanup0;
5188
5189                 if (un && opts.recursive) {
5190                         struct deleg_perms data = { un, update_perm_nvl };
5191                         if (zfs_iter_filesystems(zhp, set_deleg_perms,
5192                             &data) != 0)
5193                                 goto cleanup0;
5194                 }
5195         }
5196
5197         error = 0;
5198
5199 cleanup0:
5200         nvlist_free(perm_nvl);
5201         if (update_perm_nvl != NULL)
5202                 nvlist_free(update_perm_nvl);
5203 cleanup1:
5204         fs_perm_set_fini(&fs_perm_set);
5205 cleanup2:
5206         zfs_close(zhp);
5207
5208         return (error);
5209 }
5210
5211 static int
5212 zfs_do_allow(int argc, char **argv)
5213 {
5214         return (zfs_do_allow_unallow_impl(argc, argv, B_FALSE));
5215 }
5216
5217 static int
5218 zfs_do_unallow(int argc, char **argv)
5219 {
5220         return (zfs_do_allow_unallow_impl(argc, argv, B_TRUE));
5221 }
5222
5223 static int
5224 zfs_do_hold_rele_impl(int argc, char **argv, boolean_t holding)
5225 {
5226         int errors = 0;
5227         int i;
5228         const char *tag;
5229         boolean_t recursive = B_FALSE;
5230         const char *opts = holding ? "rt" : "r";
5231         int c;
5232
5233         /* check options */
5234         while ((c = getopt(argc, argv, opts)) != -1) {
5235                 switch (c) {
5236                 case 'r':
5237                         recursive = B_TRUE;
5238                         break;
5239                 case '?':
5240                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5241                             optopt);
5242                         usage(B_FALSE);
5243                 }
5244         }
5245
5246         argc -= optind;
5247         argv += optind;
5248
5249         /* check number of arguments */
5250         if (argc < 2)
5251                 usage(B_FALSE);
5252
5253         tag = argv[0];
5254         --argc;
5255         ++argv;
5256
5257         if (holding && tag[0] == '.') {
5258                 /* tags starting with '.' are reserved for libzfs */
5259                 (void) fprintf(stderr, gettext("tag may not start with '.'\n"));
5260                 usage(B_FALSE);
5261         }
5262
5263         for (i = 0; i < argc; ++i) {
5264                 zfs_handle_t *zhp;
5265                 char parent[ZFS_MAXNAMELEN];
5266                 const char *delim;
5267                 char *path = argv[i];
5268
5269                 delim = strchr(path, '@');
5270                 if (delim == NULL) {
5271                         (void) fprintf(stderr,
5272                             gettext("'%s' is not a snapshot\n"), path);
5273                         ++errors;
5274                         continue;
5275                 }
5276                 (void) strncpy(parent, path, delim - path);
5277                 parent[delim - path] = '\0';
5278
5279                 zhp = zfs_open(g_zfs, parent,
5280                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
5281                 if (zhp == NULL) {
5282                         ++errors;
5283                         continue;
5284                 }
5285                 if (holding) {
5286                         if (zfs_hold(zhp, delim+1, tag, recursive, -1) != 0)
5287                                 ++errors;
5288                 } else {
5289                         if (zfs_release(zhp, delim+1, tag, recursive) != 0)
5290                                 ++errors;
5291                 }
5292                 zfs_close(zhp);
5293         }
5294
5295         return (errors != 0);
5296 }
5297
5298 /*
5299  * zfs hold [-r] [-t] <tag> <snap> ...
5300  *
5301  *      -r      Recursively hold
5302  *
5303  * Apply a user-hold with the given tag to the list of snapshots.
5304  */
5305 static int
5306 zfs_do_hold(int argc, char **argv)
5307 {
5308         return (zfs_do_hold_rele_impl(argc, argv, B_TRUE));
5309 }
5310
5311 /*
5312  * zfs release [-r] <tag> <snap> ...
5313  *
5314  *      -r      Recursively release
5315  *
5316  * Release a user-hold with the given tag from the list of snapshots.
5317  */
5318 static int
5319 zfs_do_release(int argc, char **argv)
5320 {
5321         return (zfs_do_hold_rele_impl(argc, argv, B_FALSE));
5322 }
5323
5324 typedef struct holds_cbdata {
5325         boolean_t       cb_recursive;
5326         const char      *cb_snapname;
5327         nvlist_t        **cb_nvlp;
5328         size_t          cb_max_namelen;
5329         size_t          cb_max_taglen;
5330 } holds_cbdata_t;
5331
5332 #define STRFTIME_FMT_STR "%a %b %e %k:%M %Y"
5333 #define DATETIME_BUF_LEN (32)
5334 /*
5335  *
5336  */
5337 static void
5338 print_holds(boolean_t scripted, size_t nwidth, size_t tagwidth, nvlist_t *nvl)
5339 {
5340         int i;
5341         nvpair_t *nvp = NULL;
5342         char *hdr_cols[] = { "NAME", "TAG", "TIMESTAMP" };
5343         const char *col;
5344
5345         if (!scripted) {
5346                 for (i = 0; i < 3; i++) {
5347                         col = gettext(hdr_cols[i]);
5348                         if (i < 2)
5349                                 (void) printf("%-*s  ", i ? tagwidth : nwidth,
5350                                     col);
5351                         else
5352                                 (void) printf("%s\n", col);
5353                 }
5354         }
5355
5356         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
5357                 char *zname = nvpair_name(nvp);
5358                 nvlist_t *nvl2;
5359                 nvpair_t *nvp2 = NULL;
5360                 (void) nvpair_value_nvlist(nvp, &nvl2);
5361                 while ((nvp2 = nvlist_next_nvpair(nvl2, nvp2)) != NULL) {
5362                         char tsbuf[DATETIME_BUF_LEN];
5363                         char *tagname = nvpair_name(nvp2);
5364                         uint64_t val = 0;
5365                         time_t time;
5366                         struct tm t;
5367                         char sep = scripted ? '\t' : ' ';
5368                         size_t sepnum = scripted ? 1 : 2;
5369
5370                         (void) nvpair_value_uint64(nvp2, &val);
5371                         time = (time_t)val;
5372                         (void) localtime_r(&time, &t);
5373                         (void) strftime(tsbuf, DATETIME_BUF_LEN,
5374                             gettext(STRFTIME_FMT_STR), &t);
5375
5376                         (void) printf("%-*s%*c%-*s%*c%s\n", nwidth, zname,
5377                             sepnum, sep, tagwidth, tagname, sepnum, sep, tsbuf);
5378                 }
5379         }
5380 }
5381
5382 /*
5383  * Generic callback function to list a dataset or snapshot.
5384  */
5385 static int
5386 holds_callback(zfs_handle_t *zhp, void *data)
5387 {
5388         holds_cbdata_t *cbp = data;
5389         nvlist_t *top_nvl = *cbp->cb_nvlp;
5390         nvlist_t *nvl = NULL;
5391         nvpair_t *nvp = NULL;
5392         const char *zname = zfs_get_name(zhp);
5393         size_t znamelen = strnlen(zname, ZFS_MAXNAMELEN);
5394
5395         if (cbp->cb_recursive) {
5396                 const char *snapname;
5397                 char *delim  = strchr(zname, '@');
5398                 if (delim == NULL)
5399                         return (0);
5400
5401                 snapname = delim + 1;
5402                 if (strcmp(cbp->cb_snapname, snapname))
5403                         return (0);
5404         }
5405
5406         if (zfs_get_holds(zhp, &nvl) != 0)
5407                 return (-1);
5408
5409         if (znamelen > cbp->cb_max_namelen)
5410                 cbp->cb_max_namelen  = znamelen;
5411
5412         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
5413                 const char *tag = nvpair_name(nvp);
5414                 size_t taglen = strnlen(tag, MAXNAMELEN);
5415                 if (taglen > cbp->cb_max_taglen)
5416                         cbp->cb_max_taglen  = taglen;
5417         }
5418
5419         return (nvlist_add_nvlist(top_nvl, zname, nvl));
5420 }
5421
5422 /*
5423  * zfs holds [-r] <snap> ...
5424  *
5425  *      -r      Recursively hold
5426  */
5427 static int
5428 zfs_do_holds(int argc, char **argv)
5429 {
5430         int errors = 0;
5431         int c;
5432         int i;
5433         boolean_t scripted = B_FALSE;
5434         boolean_t recursive = B_FALSE;
5435         const char *opts = "rH";
5436         nvlist_t *nvl;
5437
5438         int types = ZFS_TYPE_SNAPSHOT;
5439         holds_cbdata_t cb = { 0 };
5440
5441         int limit = 0;
5442         int ret = 0;
5443         int flags = 0;
5444
5445         /* check options */
5446         while ((c = getopt(argc, argv, opts)) != -1) {
5447                 switch (c) {
5448                 case 'r':
5449                         recursive = B_TRUE;
5450                         break;
5451                 case 'H':
5452                         scripted = B_TRUE;
5453                         break;
5454                 case '?':
5455                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5456                             optopt);
5457                         usage(B_FALSE);
5458                 }
5459         }
5460
5461         if (recursive) {
5462                 types |= ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME;
5463                 flags |= ZFS_ITER_RECURSE;
5464         }
5465
5466         argc -= optind;
5467         argv += optind;
5468
5469         /* check number of arguments */
5470         if (argc < 1)
5471                 usage(B_FALSE);
5472
5473         if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0)
5474                 nomem();
5475
5476         for (i = 0; i < argc; ++i) {
5477                 char *snapshot = argv[i];
5478                 const char *delim;
5479                 const char *snapname;
5480
5481                 delim = strchr(snapshot, '@');
5482                 if (delim == NULL) {
5483                         (void) fprintf(stderr,
5484                             gettext("'%s' is not a snapshot\n"), snapshot);
5485                         ++errors;
5486                         continue;
5487                 }
5488                 snapname = delim + 1;
5489                 if (recursive)
5490                         snapshot[delim - snapshot] = '\0';
5491
5492                 cb.cb_recursive = recursive;
5493                 cb.cb_snapname = snapname;
5494                 cb.cb_nvlp = &nvl;
5495
5496                 /*
5497                  *  1. collect holds data, set format options
5498                  */
5499                 ret = zfs_for_each(argc, argv, flags, types, NULL, NULL, limit,
5500                     holds_callback, &cb);
5501                 if (ret != 0)
5502                         ++errors;
5503         }
5504
5505         /*
5506          *  2. print holds data
5507          */
5508         print_holds(scripted, cb.cb_max_namelen, cb.cb_max_taglen, nvl);
5509
5510         if (nvlist_empty(nvl))
5511                 (void) printf(gettext("no datasets available\n"));
5512
5513         nvlist_free(nvl);
5514
5515         return (0 != errors);
5516 }
5517
5518 #define CHECK_SPINNER 30
5519 #define SPINNER_TIME 3          /* seconds */
5520 #define MOUNT_TIME 5            /* seconds */
5521
5522 static int
5523 get_one_dataset(zfs_handle_t *zhp, void *data)
5524 {
5525         static char *spin[] = { "-", "\\", "|", "/" };
5526         static int spinval = 0;
5527         static int spincheck = 0;
5528         static time_t last_spin_time = (time_t)0;
5529         get_all_cb_t *cbp = data;
5530         zfs_type_t type = zfs_get_type(zhp);
5531
5532         if (cbp->cb_verbose) {
5533                 if (--spincheck < 0) {
5534                         time_t now = time(NULL);
5535                         if (last_spin_time + SPINNER_TIME < now) {
5536                                 update_progress(spin[spinval++ % 4]);
5537                                 last_spin_time = now;
5538                         }
5539                         spincheck = CHECK_SPINNER;
5540                 }
5541         }
5542
5543         /*
5544          * Interate over any nested datasets.
5545          */
5546         if (zfs_iter_filesystems(zhp, get_one_dataset, data) != 0) {
5547                 zfs_close(zhp);
5548                 return (1);
5549         }
5550
5551         /*
5552          * Skip any datasets whose type does not match.
5553          */
5554         if ((type & ZFS_TYPE_FILESYSTEM) == 0) {
5555                 zfs_close(zhp);
5556                 return (0);
5557         }
5558         libzfs_add_handle(cbp, zhp);
5559         assert(cbp->cb_used <= cbp->cb_alloc);
5560
5561         return (0);
5562 }
5563
5564 static void
5565 get_all_datasets(zfs_handle_t ***dslist, size_t *count, boolean_t verbose)
5566 {
5567         get_all_cb_t cb = { 0 };
5568         cb.cb_verbose = verbose;
5569         cb.cb_getone = get_one_dataset;
5570
5571         if (verbose)
5572                 set_progress_header(gettext("Reading ZFS config"));
5573         (void) zfs_iter_root(g_zfs, get_one_dataset, &cb);
5574
5575         *dslist = cb.cb_handles;
5576         *count = cb.cb_used;
5577
5578         if (verbose)
5579                 finish_progress(gettext("done."));
5580 }
5581
5582 /*
5583  * Generic callback for sharing or mounting filesystems.  Because the code is so
5584  * similar, we have a common function with an extra parameter to determine which
5585  * mode we are using.
5586  */
5587 #define OP_SHARE        0x1
5588 #define OP_MOUNT        0x2
5589
5590 /*
5591  * Share or mount a dataset.
5592  */
5593 static int
5594 share_mount_one(zfs_handle_t *zhp, int op, int flags, char *protocol,
5595     boolean_t explicit, const char *options)
5596 {
5597         char mountpoint[ZFS_MAXPROPLEN];
5598         char shareopts[ZFS_MAXPROPLEN];
5599         char smbshareopts[ZFS_MAXPROPLEN];
5600         const char *cmdname = op == OP_SHARE ? "share" : "mount";
5601         struct mnttab mnt;
5602         uint64_t zoned, canmount;
5603         boolean_t shared_nfs, shared_smb;
5604
5605         assert(zfs_get_type(zhp) & ZFS_TYPE_FILESYSTEM);
5606
5607         /*
5608          * Check to make sure we can mount/share this dataset.  If we
5609          * are in the global zone and the filesystem is exported to a
5610          * local zone, or if we are in a local zone and the
5611          * filesystem is not exported, then it is an error.
5612          */
5613         zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED);
5614
5615         if (zoned && getzoneid() == GLOBAL_ZONEID) {
5616                 if (!explicit)
5617                         return (0);
5618
5619                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5620                     "dataset is exported to a local zone\n"), cmdname,
5621                     zfs_get_name(zhp));
5622                 return (1);
5623
5624         } else if (!zoned && getzoneid() != GLOBAL_ZONEID) {
5625                 if (!explicit)
5626                         return (0);
5627
5628                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5629                     "permission denied\n"), cmdname,
5630                     zfs_get_name(zhp));
5631                 return (1);
5632         }
5633
5634         /*
5635          * Ignore any filesystems which don't apply to us. This
5636          * includes those with a legacy mountpoint, or those with
5637          * legacy share options.
5638          */
5639         verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
5640             sizeof (mountpoint), NULL, NULL, 0, B_FALSE) == 0);
5641         verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, shareopts,
5642             sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0);
5643         verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshareopts,
5644             sizeof (smbshareopts), NULL, NULL, 0, B_FALSE) == 0);
5645
5646         if (op == OP_SHARE && strcmp(shareopts, "off") == 0 &&
5647             strcmp(smbshareopts, "off") == 0) {
5648                 if (!explicit)
5649                         return (0);
5650
5651                 (void) fprintf(stderr, gettext("cannot share '%s': "
5652                     "legacy share\n"), zfs_get_name(zhp));
5653                 (void) fprintf(stderr, gettext("use share(1M) to "
5654                     "share this filesystem, or set "
5655                     "sharenfs property on\n"));
5656                 return (1);
5657         }
5658
5659         /*
5660          * We cannot share or mount legacy filesystems. If the
5661          * shareopts is non-legacy but the mountpoint is legacy, we
5662          * treat it as a legacy share.
5663          */
5664         if (strcmp(mountpoint, "legacy") == 0) {
5665                 if (!explicit)
5666                         return (0);
5667
5668                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5669                     "legacy mountpoint\n"), cmdname, zfs_get_name(zhp));
5670                 (void) fprintf(stderr, gettext("use %s(1M) to "
5671                     "%s this filesystem\n"), cmdname, cmdname);
5672                 return (1);
5673         }
5674
5675         if (strcmp(mountpoint, "none") == 0) {
5676                 if (!explicit)
5677                         return (0);
5678
5679                 (void) fprintf(stderr, gettext("cannot %s '%s': no "
5680                     "mountpoint set\n"), cmdname, zfs_get_name(zhp));
5681                 return (1);
5682         }
5683
5684         /*
5685          * canmount     explicit        outcome
5686          * on           no              pass through
5687          * on           yes             pass through
5688          * off          no              return 0
5689          * off          yes             display error, return 1
5690          * noauto       no              return 0
5691          * noauto       yes             pass through
5692          */
5693         canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT);
5694         if (canmount == ZFS_CANMOUNT_OFF) {
5695                 if (!explicit)
5696                         return (0);
5697
5698                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5699                     "'canmount' property is set to 'off'\n"), cmdname,
5700                     zfs_get_name(zhp));
5701                 return (1);
5702         } else if (canmount == ZFS_CANMOUNT_NOAUTO && !explicit) {
5703                 return (0);
5704         }
5705
5706         /*
5707          * At this point, we have verified that the mountpoint and/or
5708          * shareopts are appropriate for auto management. If the
5709          * filesystem is already mounted or shared, return (failing
5710          * for explicit requests); otherwise mount or share the
5711          * filesystem.
5712          */
5713         switch (op) {
5714         case OP_SHARE:
5715
5716                 shared_nfs = zfs_is_shared_nfs(zhp, NULL);
5717                 shared_smb = zfs_is_shared_smb(zhp, NULL);
5718
5719                 if (shared_nfs && shared_smb ||
5720                     (shared_nfs && strcmp(shareopts, "on") == 0 &&
5721                     strcmp(smbshareopts, "off") == 0) ||
5722                     (shared_smb && strcmp(smbshareopts, "on") == 0 &&
5723                     strcmp(shareopts, "off") == 0)) {
5724                         if (!explicit)
5725                                 return (0);
5726
5727                         (void) fprintf(stderr, gettext("cannot share "
5728                             "'%s': filesystem already shared\n"),
5729                             zfs_get_name(zhp));
5730                         return (1);
5731                 }
5732
5733                 if (!zfs_is_mounted(zhp, NULL) &&
5734                     zfs_mount(zhp, NULL, 0) != 0)
5735                         return (1);
5736
5737                 if (protocol == NULL) {
5738                         if (zfs_shareall(zhp) != 0)
5739                                 return (1);
5740                 } else if (strcmp(protocol, "nfs") == 0) {
5741                         if (zfs_share_nfs(zhp))
5742                                 return (1);
5743                 } else if (strcmp(protocol, "smb") == 0) {
5744                         if (zfs_share_smb(zhp))
5745                                 return (1);
5746                 } else {
5747                         (void) fprintf(stderr, gettext("cannot share "
5748                             "'%s': invalid share type '%s' "
5749                             "specified\n"),
5750                             zfs_get_name(zhp), protocol);
5751                         return (1);
5752                 }
5753
5754                 break;
5755
5756         case OP_MOUNT:
5757                 if (options == NULL)
5758                         mnt.mnt_mntopts = "";
5759                 else
5760                         mnt.mnt_mntopts = (char *)options;
5761
5762                 if (!hasmntopt(&mnt, MNTOPT_REMOUNT) &&
5763                     zfs_is_mounted(zhp, NULL)) {
5764                         if (!explicit)
5765                                 return (0);
5766
5767                         (void) fprintf(stderr, gettext("cannot mount "
5768                             "'%s': filesystem already mounted\n"),
5769                             zfs_get_name(zhp));
5770                         return (1);
5771                 }
5772
5773                 if (zfs_mount(zhp, options, flags) != 0)
5774                         return (1);
5775                 break;
5776         }
5777
5778         return (0);
5779 }
5780
5781 /*
5782  * Reports progress in the form "(current/total)".  Not thread-safe.
5783  */
5784 static void
5785 report_mount_progress(int current, int total)
5786 {
5787         static time_t last_progress_time = 0;
5788         time_t now = time(NULL);
5789         char info[32];
5790
5791         /* report 1..n instead of 0..n-1 */
5792         ++current;
5793
5794         /* display header if we're here for the first time */
5795         if (current == 1) {
5796                 set_progress_header(gettext("Mounting ZFS filesystems"));
5797         } else if (current != total && last_progress_time + MOUNT_TIME >= now) {
5798                 /* too soon to report again */
5799                 return;
5800         }
5801
5802         last_progress_time = now;
5803
5804         (void) sprintf(info, "(%d/%d)", current, total);
5805
5806         if (current == total)
5807                 finish_progress(info);
5808         else
5809                 update_progress(info);
5810 }
5811
5812 static void
5813 append_options(char *mntopts, char *newopts)
5814 {
5815         int len = strlen(mntopts);
5816
5817         /* original length plus new string to append plus 1 for the comma */
5818         if (len + 1 + strlen(newopts) >= MNT_LINE_MAX) {
5819                 (void) fprintf(stderr, gettext("the opts argument for "
5820                     "'%c' option is too long (more than %d chars)\n"),
5821                     "-o", MNT_LINE_MAX);
5822                 usage(B_FALSE);
5823         }
5824
5825         if (*mntopts)
5826                 mntopts[len++] = ',';
5827
5828         (void) strcpy(&mntopts[len], newopts);
5829 }
5830
5831 static int
5832 share_mount(int op, int argc, char **argv)
5833 {
5834         int do_all = 0;
5835         boolean_t verbose = B_FALSE;
5836         int c, ret = 0;
5837         char *options = NULL;
5838         int flags = 0;
5839
5840         /* check options */
5841         while ((c = getopt(argc, argv, op == OP_MOUNT ? ":avo:O" : "a"))
5842             != -1) {
5843                 switch (c) {
5844                 case 'a':
5845                         do_all = 1;
5846                         break;
5847                 case 'v':
5848                         verbose = B_TRUE;
5849                         break;
5850                 case 'o':
5851                         if (*optarg == '\0') {
5852                                 (void) fprintf(stderr, gettext("empty mount "
5853                                     "options (-o) specified\n"));
5854                                 usage(B_FALSE);
5855                         }
5856
5857                         if (options == NULL)
5858                                 options = safe_malloc(MNT_LINE_MAX + 1);
5859
5860                         /* option validation is done later */
5861                         append_options(options, optarg);
5862                         break;
5863
5864                 case 'O':
5865                         flags |= MS_OVERLAY;
5866                         break;
5867                 case ':':
5868                         (void) fprintf(stderr, gettext("missing argument for "
5869                             "'%c' option\n"), optopt);
5870                         usage(B_FALSE);
5871                         break;
5872                 case '?':
5873                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5874                             optopt);
5875                         usage(B_FALSE);
5876                 }
5877         }
5878
5879         argc -= optind;
5880         argv += optind;
5881
5882         /* check number of arguments */
5883         if (do_all) {
5884                 zfs_handle_t **dslist = NULL;
5885                 size_t i, count = 0;
5886                 char *protocol = NULL;
5887
5888                 if (op == OP_SHARE && argc > 0) {
5889                         if (strcmp(argv[0], "nfs") != 0 &&
5890                             strcmp(argv[0], "smb") != 0) {
5891                                 (void) fprintf(stderr, gettext("share type "
5892                                     "must be 'nfs' or 'smb'\n"));
5893                                 usage(B_FALSE);
5894                         }
5895                         protocol = argv[0];
5896                         argc--;
5897                         argv++;
5898                 }
5899
5900                 if (argc != 0) {
5901                         (void) fprintf(stderr, gettext("too many arguments\n"));
5902                         usage(B_FALSE);
5903                 }
5904
5905                 start_progress_timer();
5906                 get_all_datasets(&dslist, &count, verbose);
5907
5908                 if (count == 0)
5909                         return (0);
5910
5911                 qsort(dslist, count, sizeof (void *), libzfs_dataset_cmp);
5912
5913                 for (i = 0; i < count; i++) {
5914                         if (verbose)
5915                                 report_mount_progress(i, count);
5916
5917                         if (share_mount_one(dslist[i], op, flags, protocol,
5918                             B_FALSE, options) != 0)
5919                                 ret = 1;
5920                         zfs_close(dslist[i]);
5921                 }
5922
5923                 free(dslist);
5924         } else if (argc == 0) {
5925                 struct mnttab entry;
5926
5927                 if ((op == OP_SHARE) || (options != NULL)) {
5928                         (void) fprintf(stderr, gettext("missing filesystem "
5929                             "argument (specify -a for all)\n"));
5930                         usage(B_FALSE);
5931                 }
5932
5933                 /*
5934                  * When mount is given no arguments, go through /etc/mnttab and
5935                  * display any active ZFS mounts.  We hide any snapshots, since
5936                  * they are controlled automatically.
5937                  */
5938                 rewind(mnttab_file);
5939                 while (getmntent(mnttab_file, &entry) == 0) {
5940                         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0 ||
5941                             strchr(entry.mnt_special, '@') != NULL)
5942                                 continue;
5943
5944                         (void) printf("%-30s  %s\n", entry.mnt_special,
5945                             entry.mnt_mountp);
5946                 }
5947
5948         } else {
5949                 zfs_handle_t *zhp;
5950
5951                 if (argc > 1) {
5952                         (void) fprintf(stderr,
5953                             gettext("too many arguments\n"));
5954                         usage(B_FALSE);
5955                 }
5956
5957                 if ((zhp = zfs_open(g_zfs, argv[0],
5958                     ZFS_TYPE_FILESYSTEM)) == NULL) {
5959                         ret = 1;
5960                 } else {
5961                         ret = share_mount_one(zhp, op, flags, NULL, B_TRUE,
5962                             options);
5963                         zfs_close(zhp);
5964                 }
5965         }
5966
5967         return (ret);
5968 }
5969
5970 /*
5971  * zfs mount -a [nfs]
5972  * zfs mount filesystem
5973  *
5974  * Mount all filesystems, or mount the given filesystem.
5975  */
5976 static int
5977 zfs_do_mount(int argc, char **argv)
5978 {
5979         return (share_mount(OP_MOUNT, argc, argv));
5980 }
5981
5982 /*
5983  * zfs share -a [nfs | smb]
5984  * zfs share filesystem
5985  *
5986  * Share all filesystems, or share the given filesystem.
5987  */
5988 static int
5989 zfs_do_share(int argc, char **argv)
5990 {
5991         return (share_mount(OP_SHARE, argc, argv));
5992 }
5993
5994 typedef struct unshare_unmount_node {
5995         zfs_handle_t    *un_zhp;
5996         char            *un_mountp;
5997         uu_avl_node_t   un_avlnode;
5998 } unshare_unmount_node_t;
5999
6000 /* ARGSUSED */
6001 static int
6002 unshare_unmount_compare(const void *larg, const void *rarg, void *unused)
6003 {
6004         const unshare_unmount_node_t *l = larg;
6005         const unshare_unmount_node_t *r = rarg;
6006
6007         return (strcmp(l->un_mountp, r->un_mountp));
6008 }
6009
6010 /*
6011  * Convenience routine used by zfs_do_umount() and manual_unmount().  Given an
6012  * absolute path, find the entry /etc/mnttab, verify that its a ZFS filesystem,
6013  * and unmount it appropriately.
6014  */
6015 static int
6016 unshare_unmount_path(int op, char *path, int flags, boolean_t is_manual)
6017 {
6018         zfs_handle_t *zhp;
6019         int ret = 0;
6020         struct stat64 statbuf;
6021         struct extmnttab entry;
6022         const char *cmdname = (op == OP_SHARE) ? "unshare" : "unmount";
6023         ino_t path_inode;
6024
6025         /*
6026          * Search for the path in /etc/mnttab.  Rather than looking for the
6027          * specific path, which can be fooled by non-standard paths (i.e. ".."
6028          * or "//"), we stat() the path and search for the corresponding
6029          * (major,minor) device pair.
6030          */
6031         if (stat64(path, &statbuf) != 0) {
6032                 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
6033                     cmdname, path, strerror(errno));
6034                 return (1);
6035         }
6036         path_inode = statbuf.st_ino;
6037
6038         /*
6039          * Search for the given (major,minor) pair in the mount table.
6040          */
6041         rewind(mnttab_file);
6042         while ((ret = getextmntent(mnttab_file, &entry, 0)) == 0) {
6043                 if (entry.mnt_major == major(statbuf.st_dev) &&
6044                     entry.mnt_minor == minor(statbuf.st_dev))
6045                         break;
6046         }
6047         if (ret != 0) {
6048                 if (op == OP_SHARE) {
6049                         (void) fprintf(stderr, gettext("cannot %s '%s': not "
6050                             "currently mounted\n"), cmdname, path);
6051                         return (1);
6052                 }
6053                 (void) fprintf(stderr, gettext("warning: %s not in mnttab\n"),
6054                     path);
6055                 if ((ret = umount2(path, flags)) != 0)
6056                         (void) fprintf(stderr, gettext("%s: %s\n"), path,
6057                             strerror(errno));
6058                 return (ret != 0);
6059         }
6060
6061         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) {
6062                 (void) fprintf(stderr, gettext("cannot %s '%s': not a ZFS "
6063                     "filesystem\n"), cmdname, path);
6064                 return (1);
6065         }
6066
6067         if ((zhp = zfs_open(g_zfs, entry.mnt_special,
6068             ZFS_TYPE_FILESYSTEM)) == NULL)
6069                 return (1);
6070
6071         ret = 1;
6072         if (stat64(entry.mnt_mountp, &statbuf) != 0) {
6073                 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
6074                     cmdname, path, strerror(errno));
6075                 goto out;
6076         } else if (statbuf.st_ino != path_inode) {
6077                 (void) fprintf(stderr, gettext("cannot "
6078                     "%s '%s': not a mountpoint\n"), cmdname, path);
6079                 goto out;
6080         }
6081
6082         if (op == OP_SHARE) {
6083                 char nfs_mnt_prop[ZFS_MAXPROPLEN];
6084                 char smbshare_prop[ZFS_MAXPROPLEN];
6085
6086                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, nfs_mnt_prop,
6087                     sizeof (nfs_mnt_prop), NULL, NULL, 0, B_FALSE) == 0);
6088                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshare_prop,
6089                     sizeof (smbshare_prop), NULL, NULL, 0, B_FALSE) == 0);
6090
6091                 if (strcmp(nfs_mnt_prop, "off") == 0 &&
6092                     strcmp(smbshare_prop, "off") == 0) {
6093                         (void) fprintf(stderr, gettext("cannot unshare "
6094                             "'%s': legacy share\n"), path);
6095                         (void) fprintf(stderr, gettext("use "
6096                             "unshare(1M) to unshare this filesystem\n"));
6097                 } else if (!zfs_is_shared(zhp)) {
6098                         (void) fprintf(stderr, gettext("cannot unshare '%s': "
6099                             "not currently shared\n"), path);
6100                 } else {
6101                         ret = zfs_unshareall_bypath(zhp, path);
6102                 }
6103         } else {
6104                 char mtpt_prop[ZFS_MAXPROPLEN];
6105
6106                 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mtpt_prop,
6107                     sizeof (mtpt_prop), NULL, NULL, 0, B_FALSE) == 0);
6108
6109                 if (is_manual) {
6110                         ret = zfs_unmount(zhp, NULL, flags);
6111                 } else if (strcmp(mtpt_prop, "legacy") == 0) {
6112                         (void) fprintf(stderr, gettext("cannot unmount "
6113                             "'%s': legacy mountpoint\n"),
6114                             zfs_get_name(zhp));
6115                         (void) fprintf(stderr, gettext("use umount(1M) "
6116                             "to unmount this filesystem\n"));
6117                 } else {
6118                         ret = zfs_unmountall(zhp, flags);
6119                 }
6120         }
6121
6122 out:
6123         zfs_close(zhp);
6124
6125         return (ret != 0);
6126 }
6127
6128 /*
6129  * Generic callback for unsharing or unmounting a filesystem.
6130  */
6131 static int
6132 unshare_unmount(int op, int argc, char **argv)
6133 {
6134         int do_all = 0;
6135         int flags = 0;
6136         int ret = 0;
6137         int c;
6138         zfs_handle_t *zhp;
6139         char nfs_mnt_prop[ZFS_MAXPROPLEN];
6140         char sharesmb[ZFS_MAXPROPLEN];
6141
6142         /* check options */
6143         while ((c = getopt(argc, argv, op == OP_SHARE ? "a" : "af")) != -1) {
6144                 switch (c) {
6145                 case 'a':
6146                         do_all = 1;
6147                         break;
6148                 case 'f':
6149                         flags = MS_FORCE;
6150                         break;
6151                 case '?':
6152                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6153                             optopt);
6154                         usage(B_FALSE);
6155                 }
6156         }
6157
6158         argc -= optind;
6159         argv += optind;
6160
6161         if (do_all) {
6162                 /*
6163                  * We could make use of zfs_for_each() to walk all datasets in
6164                  * the system, but this would be very inefficient, especially
6165                  * since we would have to linearly search /etc/mnttab for each
6166                  * one.  Instead, do one pass through /etc/mnttab looking for
6167                  * zfs entries and call zfs_unmount() for each one.
6168                  *
6169                  * Things get a little tricky if the administrator has created
6170                  * mountpoints beneath other ZFS filesystems.  In this case, we
6171                  * have to unmount the deepest filesystems first.  To accomplish
6172                  * this, we place all the mountpoints in an AVL tree sorted by
6173                  * the special type (dataset name), and walk the result in
6174                  * reverse to make sure to get any snapshots first.
6175                  */
6176                 struct mnttab entry;
6177                 uu_avl_pool_t *pool;
6178                 uu_avl_t *tree;
6179                 unshare_unmount_node_t *node;
6180                 uu_avl_index_t idx;
6181                 uu_avl_walk_t *walk;
6182
6183                 if (argc != 0) {
6184                         (void) fprintf(stderr, gettext("too many arguments\n"));
6185                         usage(B_FALSE);
6186                 }
6187
6188                 if (((pool = uu_avl_pool_create("unmount_pool",
6189                     sizeof (unshare_unmount_node_t),
6190                     offsetof(unshare_unmount_node_t, un_avlnode),
6191                     unshare_unmount_compare, UU_DEFAULT)) == NULL) ||
6192                     ((tree = uu_avl_create(pool, NULL, UU_DEFAULT)) == NULL))
6193                         nomem();
6194
6195                 rewind(mnttab_file);
6196                 while (getmntent(mnttab_file, &entry) == 0) {
6197
6198                         /* ignore non-ZFS entries */
6199                         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0)
6200                                 continue;
6201
6202                         /* ignore snapshots */
6203                         if (strchr(entry.mnt_special, '@') != NULL)
6204                                 continue;
6205
6206                         if ((zhp = zfs_open(g_zfs, entry.mnt_special,
6207                             ZFS_TYPE_FILESYSTEM)) == NULL) {
6208                                 ret = 1;
6209                                 continue;
6210                         }
6211
6212                         switch (op) {
6213                         case OP_SHARE:
6214                                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
6215                                     nfs_mnt_prop,
6216                                     sizeof (nfs_mnt_prop),
6217                                     NULL, NULL, 0, B_FALSE) == 0);
6218                                 if (strcmp(nfs_mnt_prop, "off") != 0)
6219                                         break;
6220                                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
6221                                     nfs_mnt_prop,
6222                                     sizeof (nfs_mnt_prop),
6223                                     NULL, NULL, 0, B_FALSE) == 0);
6224                                 if (strcmp(nfs_mnt_prop, "off") == 0)
6225                                         continue;
6226                                 break;
6227                         case OP_MOUNT:
6228                                 /* Ignore legacy mounts */
6229                                 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT,
6230                                     nfs_mnt_prop,
6231                                     sizeof (nfs_mnt_prop),
6232                                     NULL, NULL, 0, B_FALSE) == 0);
6233                                 if (strcmp(nfs_mnt_prop, "legacy") == 0)
6234                                         continue;
6235                                 /* Ignore canmount=noauto mounts */
6236                                 if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) ==
6237                                     ZFS_CANMOUNT_NOAUTO)
6238                                         continue;
6239                         default:
6240                                 break;
6241                         }
6242
6243                         node = safe_malloc(sizeof (unshare_unmount_node_t));
6244                         node->un_zhp = zhp;
6245                         node->un_mountp = safe_strdup(entry.mnt_mountp);
6246
6247                         uu_avl_node_init(node, &node->un_avlnode, pool);
6248
6249                         if (uu_avl_find(tree, node, NULL, &idx) == NULL) {
6250                                 uu_avl_insert(tree, node, idx);
6251                         } else {
6252                                 zfs_close(node->un_zhp);
6253                                 free(node->un_mountp);
6254                                 free(node);
6255                         }
6256                 }
6257
6258                 /*
6259                  * Walk the AVL tree in reverse, unmounting each filesystem and
6260                  * removing it from the AVL tree in the process.
6261                  */
6262                 if ((walk = uu_avl_walk_start(tree,
6263                     UU_WALK_REVERSE | UU_WALK_ROBUST)) == NULL)
6264                         nomem();
6265
6266                 while ((node = uu_avl_walk_next(walk)) != NULL) {
6267                         uu_avl_remove(tree, node);
6268
6269                         switch (op) {
6270                         case OP_SHARE:
6271                                 if (zfs_unshareall_bypath(node->un_zhp,
6272                                     node->un_mountp) != 0)
6273                                         ret = 1;
6274                                 break;
6275
6276                         case OP_MOUNT:
6277                                 if (zfs_unmount(node->un_zhp,
6278                                     node->un_mountp, flags) != 0)
6279                                         ret = 1;
6280                                 break;
6281                         }
6282
6283                         zfs_close(node->un_zhp);
6284                         free(node->un_mountp);
6285                         free(node);
6286                 }
6287
6288                 uu_avl_walk_end(walk);
6289                 uu_avl_destroy(tree);
6290                 uu_avl_pool_destroy(pool);
6291
6292         } else {
6293                 if (argc != 1) {
6294                         if (argc == 0)
6295                                 (void) fprintf(stderr,
6296                                     gettext("missing filesystem argument\n"));
6297                         else
6298                                 (void) fprintf(stderr,
6299                                     gettext("too many arguments\n"));
6300                         usage(B_FALSE);
6301                 }
6302
6303                 /*
6304                  * We have an argument, but it may be a full path or a ZFS
6305                  * filesystem.  Pass full paths off to unmount_path() (shared by
6306                  * manual_unmount), otherwise open the filesystem and pass to
6307                  * zfs_unmount().
6308                  */
6309                 if (argv[0][0] == '/')
6310                         return (unshare_unmount_path(op, argv[0],
6311                             flags, B_FALSE));
6312
6313                 if ((zhp = zfs_open(g_zfs, argv[0],
6314                     ZFS_TYPE_FILESYSTEM)) == NULL)
6315                         return (1);
6316
6317                 verify(zfs_prop_get(zhp, op == OP_SHARE ?
6318                     ZFS_PROP_SHARENFS : ZFS_PROP_MOUNTPOINT,
6319                     nfs_mnt_prop, sizeof (nfs_mnt_prop), NULL,
6320                     NULL, 0, B_FALSE) == 0);
6321
6322                 switch (op) {
6323                 case OP_SHARE:
6324                         verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
6325                             nfs_mnt_prop,
6326                             sizeof (nfs_mnt_prop),
6327                             NULL, NULL, 0, B_FALSE) == 0);
6328                         verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
6329                             sharesmb, sizeof (sharesmb), NULL, NULL,
6330                             0, B_FALSE) == 0);
6331
6332                         if (strcmp(nfs_mnt_prop, "off") == 0 &&
6333                             strcmp(sharesmb, "off") == 0) {
6334                                 (void) fprintf(stderr, gettext("cannot "
6335                                     "unshare '%s': legacy share\n"),
6336                                     zfs_get_name(zhp));
6337                                 (void) fprintf(stderr, gettext("use "
6338                                     "unshare(1M) to unshare this "
6339                                     "filesystem\n"));
6340                                 ret = 1;
6341                         } else if (!zfs_is_shared(zhp)) {
6342                                 (void) fprintf(stderr, gettext("cannot "
6343                                     "unshare '%s': not currently "
6344                                     "shared\n"), zfs_get_name(zhp));
6345                                 ret = 1;
6346                         } else if (zfs_unshareall(zhp) != 0) {
6347                                 ret = 1;
6348                         }
6349                         break;
6350
6351                 case OP_MOUNT:
6352                         if (strcmp(nfs_mnt_prop, "legacy") == 0) {
6353                                 (void) fprintf(stderr, gettext("cannot "
6354                                     "unmount '%s': legacy "
6355                                     "mountpoint\n"), zfs_get_name(zhp));
6356                                 (void) fprintf(stderr, gettext("use "
6357                                     "umount(1M) to unmount this "
6358                                     "filesystem\n"));
6359                                 ret = 1;
6360                         } else if (!zfs_is_mounted(zhp, NULL)) {
6361                                 (void) fprintf(stderr, gettext("cannot "
6362                                     "unmount '%s': not currently "
6363                                     "mounted\n"),
6364                                     zfs_get_name(zhp));
6365                                 ret = 1;
6366                         } else if (zfs_unmountall(zhp, flags) != 0) {
6367                                 ret = 1;
6368                         }
6369                         break;
6370                 }
6371
6372                 zfs_close(zhp);
6373         }
6374
6375         return (ret);
6376 }
6377
6378 /*
6379  * zfs unmount -a
6380  * zfs unmount filesystem
6381  *
6382  * Unmount all filesystems, or a specific ZFS filesystem.
6383  */
6384 static int
6385 zfs_do_unmount(int argc, char **argv)
6386 {
6387         return (unshare_unmount(OP_MOUNT, argc, argv));
6388 }
6389
6390 /*
6391  * zfs unshare -a
6392  * zfs unshare filesystem
6393  *
6394  * Unshare all filesystems, or a specific ZFS filesystem.
6395  */
6396 static int
6397 zfs_do_unshare(int argc, char **argv)
6398 {
6399         return (unshare_unmount(OP_SHARE, argc, argv));
6400 }
6401
6402 /*
6403  * Called when invoked as /etc/fs/zfs/mount.  Do the mount if the mountpoint is
6404  * 'legacy'.  Otherwise, complain that use should be using 'zfs mount'.
6405  */
6406 static int
6407 manual_mount(int argc, char **argv)
6408 {
6409         zfs_handle_t *zhp;
6410         char mountpoint[ZFS_MAXPROPLEN];
6411         char mntopts[MNT_LINE_MAX] = { '\0' };
6412         int ret = 0;
6413         int c;
6414         int flags = 0;
6415         char *dataset, *path;
6416
6417         /* check options */
6418         while ((c = getopt(argc, argv, ":mo:O")) != -1) {
6419                 switch (c) {
6420                 case 'o':
6421                         (void) strlcpy(mntopts, optarg, sizeof (mntopts));
6422                         break;
6423                 case 'O':
6424                         flags |= MS_OVERLAY;
6425                         break;
6426                 case 'm':
6427                         flags |= MS_NOMNTTAB;
6428                         break;
6429                 case ':':
6430                         (void) fprintf(stderr, gettext("missing argument for "
6431                             "'%c' option\n"), optopt);
6432                         usage(B_FALSE);
6433                         break;
6434                 case '?':
6435                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6436                             optopt);
6437                         (void) fprintf(stderr, gettext("usage: mount [-o opts] "
6438                             "<path>\n"));
6439                         return (2);
6440                 }
6441         }
6442
6443         argc -= optind;
6444         argv += optind;
6445
6446         /* check that we only have two arguments */
6447         if (argc != 2) {
6448                 if (argc == 0)
6449                         (void) fprintf(stderr, gettext("missing dataset "
6450                             "argument\n"));
6451                 else if (argc == 1)
6452                         (void) fprintf(stderr,
6453                             gettext("missing mountpoint argument\n"));
6454                 else
6455                         (void) fprintf(stderr, gettext("too many arguments\n"));
6456                 (void) fprintf(stderr, "usage: mount <dataset> <mountpoint>\n");
6457                 return (2);
6458         }
6459
6460         dataset = argv[0];
6461         path = argv[1];
6462
6463         /* try to open the dataset */
6464         if ((zhp = zfs_open(g_zfs, dataset, ZFS_TYPE_FILESYSTEM)) == NULL)
6465                 return (1);
6466
6467         (void) zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
6468             sizeof (mountpoint), NULL, NULL, 0, B_FALSE);
6469
6470         /* check for legacy mountpoint and complain appropriately */
6471         ret = 0;
6472         if (strcmp(mountpoint, ZFS_MOUNTPOINT_LEGACY) == 0) {
6473                 if (mount(dataset, path, MS_OPTIONSTR | flags, MNTTYPE_ZFS,
6474                     NULL, 0, mntopts, sizeof (mntopts)) != 0) {
6475                         (void) fprintf(stderr, gettext("mount failed: %s\n"),
6476                             strerror(errno));
6477                         ret = 1;
6478                 }
6479         } else {
6480                 (void) fprintf(stderr, gettext("filesystem '%s' cannot be "
6481                     "mounted using 'mount -F zfs'\n"), dataset);
6482                 (void) fprintf(stderr, gettext("Use 'zfs set mountpoint=%s' "
6483                     "instead.\n"), path);
6484                 (void) fprintf(stderr, gettext("If you must use 'mount -F zfs' "
6485                     "or /etc/vfstab, use 'zfs set mountpoint=legacy'.\n"));
6486                 (void) fprintf(stderr, gettext("See zfs(1M) for more "
6487                     "information.\n"));
6488                 ret = 1;
6489         }
6490
6491         return (ret);
6492 }
6493
6494 /*
6495  * Called when invoked as /etc/fs/zfs/umount.  Unlike a manual mount, we allow
6496  * unmounts of non-legacy filesystems, as this is the dominant administrative
6497  * interface.
6498  */
6499 static int
6500 manual_unmount(int argc, char **argv)
6501 {
6502         int flags = 0;
6503         int c;
6504
6505         /* check options */
6506         while ((c = getopt(argc, argv, "f")) != -1) {
6507                 switch (c) {
6508                 case 'f':
6509                         flags = MS_FORCE;
6510                         break;
6511                 case '?':
6512                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6513                             optopt);
6514                         (void) fprintf(stderr, gettext("usage: unmount [-f] "
6515                             "<path>\n"));
6516                         return (2);
6517                 }
6518         }
6519
6520         argc -= optind;
6521         argv += optind;
6522
6523         /* check arguments */
6524         if (argc != 1) {
6525                 if (argc == 0)
6526                         (void) fprintf(stderr, gettext("missing path "
6527                             "argument\n"));
6528                 else
6529                         (void) fprintf(stderr, gettext("too many arguments\n"));
6530                 (void) fprintf(stderr, gettext("usage: unmount [-f] <path>\n"));
6531                 return (2);
6532         }
6533
6534         return (unshare_unmount_path(OP_MOUNT, argv[0], flags, B_TRUE));
6535 }
6536
6537 static int
6538 find_command_idx(char *command, int *idx)
6539 {
6540         int i;
6541
6542         for (i = 0; i < NCOMMAND; i++) {
6543                 if (command_table[i].name == NULL)
6544                         continue;
6545
6546                 if (strcmp(command, command_table[i].name) == 0) {
6547                         *idx = i;
6548                         return (0);
6549                 }
6550         }
6551         return (1);
6552 }
6553
6554 static int
6555 zfs_do_diff(int argc, char **argv)
6556 {
6557         zfs_handle_t *zhp;
6558         int flags = 0;
6559         char *tosnap = NULL;
6560         char *fromsnap = NULL;
6561         char *atp, *copy;
6562         int err = 0;
6563         int c;
6564
6565         while ((c = getopt(argc, argv, "FHt")) != -1) {
6566                 switch (c) {
6567                 case 'F':
6568                         flags |= ZFS_DIFF_CLASSIFY;
6569                         break;
6570                 case 'H':
6571                         flags |= ZFS_DIFF_PARSEABLE;
6572                         break;
6573                 case 't':
6574                         flags |= ZFS_DIFF_TIMESTAMP;
6575                         break;
6576                 default:
6577                         (void) fprintf(stderr,
6578                             gettext("invalid option '%c'\n"), optopt);
6579                         usage(B_FALSE);
6580                 }
6581         }
6582
6583         argc -= optind;
6584         argv += optind;
6585
6586         if (argc < 1) {
6587                 (void) fprintf(stderr,
6588                 gettext("must provide at least one snapshot name\n"));
6589                 usage(B_FALSE);
6590         }
6591
6592         if (argc > 2) {
6593                 (void) fprintf(stderr, gettext("too many arguments\n"));
6594                 usage(B_FALSE);
6595         }
6596
6597         fromsnap = argv[0];
6598         tosnap = (argc == 2) ? argv[1] : NULL;
6599
6600         copy = NULL;
6601         if (*fromsnap != '@')
6602                 copy = strdup(fromsnap);
6603         else if (tosnap)
6604                 copy = strdup(tosnap);
6605         if (copy == NULL)
6606                 usage(B_FALSE);
6607
6608         if (atp = strchr(copy, '@'))
6609                 *atp = '\0';
6610
6611         if ((zhp = zfs_open(g_zfs, copy, ZFS_TYPE_FILESYSTEM)) == NULL)
6612                 return (1);
6613
6614         free(copy);
6615
6616         /*
6617          * Ignore SIGPIPE so that the library can give us
6618          * information on any failure
6619          */
6620         (void) sigignore(SIGPIPE);
6621
6622         err = zfs_show_diffs(zhp, STDOUT_FILENO, fromsnap, tosnap, flags);
6623
6624         zfs_close(zhp);
6625
6626         return (err != 0);
6627 }
6628
6629 /*
6630  * zfs bookmark <fs@snap> <fs#bmark>
6631  *
6632  * Creates a bookmark with the given name from the given snapshot.
6633  */
6634 static int
6635 zfs_do_bookmark(int argc, char **argv)
6636 {
6637         char snapname[ZFS_MAXNAMELEN];
6638         zfs_handle_t *zhp;
6639         nvlist_t *nvl;
6640         int ret = 0;
6641         int c;
6642
6643         /* check options */
6644         while ((c = getopt(argc, argv, "")) != -1) {
6645                 switch (c) {
6646                 case '?':
6647                         (void) fprintf(stderr,
6648                             gettext("invalid option '%c'\n"), optopt);
6649                         goto usage;
6650                 }
6651         }
6652
6653         argc -= optind;
6654         argv += optind;
6655
6656         /* check number of arguments */
6657         if (argc < 1) {
6658                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
6659                 goto usage;
6660         }
6661         if (argc < 2) {
6662                 (void) fprintf(stderr, gettext("missing bookmark argument\n"));
6663                 goto usage;
6664         }
6665
6666         if (strchr(argv[1], '#') == NULL) {
6667                 (void) fprintf(stderr,
6668                     gettext("invalid bookmark name '%s' -- "
6669                     "must contain a '#'\n"), argv[1]);
6670                 goto usage;
6671         }
6672
6673         if (argv[0][0] == '@') {
6674                 /*
6675                  * Snapshot name begins with @.
6676                  * Default to same fs as bookmark.
6677                  */
6678                 (void) strncpy(snapname, argv[1], sizeof (snapname));
6679                 *strchr(snapname, '#') = '\0';
6680                 (void) strlcat(snapname, argv[0], sizeof (snapname));
6681         } else {
6682                 (void) strncpy(snapname, argv[0], sizeof (snapname));
6683         }
6684         zhp = zfs_open(g_zfs, snapname, ZFS_TYPE_SNAPSHOT);
6685         if (zhp == NULL)
6686                 goto usage;
6687         zfs_close(zhp);
6688
6689
6690         nvl = fnvlist_alloc();
6691         fnvlist_add_string(nvl, argv[1], snapname);
6692         ret = lzc_bookmark(nvl, NULL);
6693         fnvlist_free(nvl);
6694
6695         if (ret != 0) {
6696                 const char *err_msg;
6697                 char errbuf[1024];
6698
6699                 (void) snprintf(errbuf, sizeof (errbuf),
6700                     dgettext(TEXT_DOMAIN,
6701                     "cannot create bookmark '%s'"), argv[1]);
6702
6703                 switch (ret) {
6704                 case EXDEV:
6705                         err_msg = "bookmark is in a different pool";
6706                         break;
6707                 case EEXIST:
6708                         err_msg = "bookmark exists";
6709                         break;
6710                 case EINVAL:
6711                         err_msg = "invalid argument";
6712                         break;
6713                 case ENOTSUP:
6714                         err_msg = "bookmark feature not enabled";
6715                         break;
6716                 case ENOSPC:
6717                         err_msg = "out of space";
6718                         break;
6719                 default:
6720                         err_msg = "unknown error";
6721                         break;
6722                 }
6723                 (void) fprintf(stderr, "%s: %s\n", errbuf,
6724                     dgettext(TEXT_DOMAIN, err_msg));
6725         }
6726
6727         return (ret != 0);
6728
6729 usage:
6730         usage(B_FALSE);
6731         return (-1);
6732 }
6733
6734 int
6735 main(int argc, char **argv)
6736 {
6737         int ret = 0;
6738         int i;
6739         char *progname;
6740         char *cmdname;
6741
6742         (void) setlocale(LC_ALL, "");
6743         (void) textdomain(TEXT_DOMAIN);
6744
6745         opterr = 0;
6746
6747         if ((g_zfs = libzfs_init()) == NULL) {
6748                 (void) fprintf(stderr, gettext("internal error: failed to "
6749                     "initialize ZFS library\n"));
6750                 return (1);
6751         }
6752
6753         zfs_save_arguments(argc, argv, history_str, sizeof (history_str));
6754
6755         libzfs_print_on_error(g_zfs, B_TRUE);
6756
6757         if ((mnttab_file = fopen(MNTTAB, "r")) == NULL) {
6758                 (void) fprintf(stderr, gettext("internal error: unable to "
6759                     "open %s\n"), MNTTAB);
6760                 return (1);
6761         }
6762
6763         /*
6764          * This command also doubles as the /etc/fs mount and unmount program.
6765          * Determine if we should take this behavior based on argv[0].
6766          */
6767         progname = basename(argv[0]);
6768         if (strcmp(progname, "mount") == 0) {
6769                 ret = manual_mount(argc, argv);
6770         } else if (strcmp(progname, "umount") == 0) {
6771                 ret = manual_unmount(argc, argv);
6772         } else {
6773                 /*
6774                  * Make sure the user has specified some command.
6775                  */
6776                 if (argc < 2) {
6777                         (void) fprintf(stderr, gettext("missing command\n"));
6778                         usage(B_FALSE);
6779                 }
6780
6781                 cmdname = argv[1];
6782
6783                 /*
6784                  * The 'umount' command is an alias for 'unmount'
6785                  */
6786                 if (strcmp(cmdname, "umount") == 0)
6787                         cmdname = "unmount";
6788
6789                 /*
6790                  * The 'recv' command is an alias for 'receive'
6791                  */
6792                 if (strcmp(cmdname, "recv") == 0)
6793                         cmdname = "receive";
6794
6795                 /*
6796                  * The 'snap' command is an alias for 'snapshot'
6797                  */
6798                 if (strcmp(cmdname, "snap") == 0)
6799                         cmdname = "snapshot";
6800
6801                 /*
6802                  * Special case '-?'
6803                  */
6804                 if (strcmp(cmdname, "-?") == 0)
6805                         usage(B_TRUE);
6806
6807                 /*
6808                  * Run the appropriate command.
6809                  */
6810                 libzfs_mnttab_cache(g_zfs, B_TRUE);
6811                 if (find_command_idx(cmdname, &i) == 0) {
6812                         current_command = &command_table[i];
6813                         ret = command_table[i].func(argc - 1, argv + 1);
6814                 } else if (strchr(cmdname, '=') != NULL) {
6815                         verify(find_command_idx("set", &i) == 0);
6816                         current_command = &command_table[i];
6817                         ret = command_table[i].func(argc, argv);
6818                 } else {
6819                         (void) fprintf(stderr, gettext("unrecognized "
6820                             "command '%s'\n"), cmdname);
6821                         usage(B_FALSE);
6822                 }
6823                 libzfs_mnttab_cache(g_zfs, B_FALSE);
6824         }
6825
6826         (void) fclose(mnttab_file);
6827
6828         if (ret == 0 && log_history)
6829                 (void) zpool_log_history(g_zfs, history_str);
6830
6831         libzfs_fini(g_zfs);
6832
6833         /*
6834          * The 'ZFS_ABORT' environment variable causes us to dump core on exit
6835          * for the purposes of running ::findleaks.
6836          */
6837         if (getenv("ZFS_ABORT") != NULL) {
6838                 (void) printf("dumping core by request\n");
6839                 abort();
6840         }
6841
6842         return (ret);
6843 }