cddl/contrib/opensolaris/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) 2011-2012 Pawel Jakub Dawidek <pawel@dawidek.net>.
  28  * All rights reserved.
  29  * Copyright (c) 2012 Martin Matuska <mm@FreeBSD.org>. All rights reserved.
  30  * Copyright (c) 2013 Steven Hartland.  All rights reserved.
  31  * Copyright 2013 Nexenta Systems, Inc.  All rights reserved.
  32  */
  33
  34 #include <assert.h>
  35 #include <ctype.h>
  36 #include <errno.h>
  37 #include <libgen.h>
  38 #include <libintl.h>
  39 #include <libuutil.h>
  40 #include <libnvpair.h>
  41 #include <locale.h>
  42 #include <stddef.h>
  43 #include <stdio.h>
  44 #include <stdlib.h>
  45 #include <strings.h>
  46 #include <unistd.h>
  47 #include <fcntl.h>
  48 #include <zone.h>
  49 #include <grp.h>
  50 #include <pwd.h>
  51 #include <signal.h>
  52 #include <sys/list.h>
  53 #include <sys/mntent.h>
  54 #include <sys/mnttab.h>
  55 #include <sys/mount.h>
  56 #include <sys/stat.h>
  57 #include <sys/fs/zfs.h>
  58 #include <sys/types.h>
  59 #include <time.h>
  60 #include <err.h>
  61 #include <jail.h>
  62
  63 #include <libzfs.h>
  64 #include <libzfs_core.h>
  65 #include <zfs_prop.h>
  66 #include <zfs_deleg.h>
  67 #include <libuutil.h>
  68 #ifdef sun
  69 #include <aclutils.h>
  70 #include <directory.h>
  71 #include <idmap.h>
  72 #endif
  73
  74 #include "zfs_iter.h"
  75 #include "zfs_util.h"
  76 #include "zfs_comutil.h"
  77
  78 libzfs_handle_t *g_zfs;
  79
  80 static FILE *mnttab_file;
  81 static char history_str[HIS_MAX_RECORD_LEN];
  82 static boolean_t log_history = B_TRUE;
  83
  84 static int zfs_do_clone(int argc, char **argv);
  85 static int zfs_do_create(int argc, char **argv);
  86 static int zfs_do_destroy(int argc, char **argv);
  87 static int zfs_do_get(int argc, char **argv);
  88 static int zfs_do_inherit(int argc, char **argv);
  89 static int zfs_do_list(int argc, char **argv);
  90 static int zfs_do_mount(int argc, char **argv);
  91 static int zfs_do_rename(int argc, char **argv);
  92 static int zfs_do_rollback(int argc, char **argv);
  93 static int zfs_do_set(int argc, char **argv);
  94 static int zfs_do_upgrade(int argc, char **argv);
  95 static int zfs_do_snapshot(int argc, char **argv);
  96 static int zfs_do_unmount(int argc, char **argv);
  97 static int zfs_do_share(int argc, char **argv);
  98 static int zfs_do_unshare(int argc, char **argv);
  99 static int zfs_do_send(int argc, char **argv);
 100 static int zfs_do_receive(int argc, char **argv);
 101 static int zfs_do_promote(int argc, char **argv);
 102 static int zfs_do_userspace(int argc, char **argv);
 103 static int zfs_do_allow(int argc, char **argv);
 104 static int zfs_do_unallow(int argc, char **argv);
 105 static int zfs_do_hold(int argc, char **argv);
 106 static int zfs_do_holds(int argc, char **argv);
 107 static int zfs_do_release(int argc, char **argv);
 108 static int zfs_do_diff(int argc, char **argv);
 109 static int zfs_do_jail(int argc, char **argv);
 110 static int zfs_do_unjail(int argc, char **argv);
 111 static int zfs_do_bookmark(int argc, char **argv);
 112
 113 /*
 114  * Enable a reasonable set of defaults for libumem debugging on DEBUG builds.
 115  */
 116
 117 #ifdef DEBUG
 118 const char *
 119 _umem_debug_init(void)
 120 {
 121         return ("default,verbose"); /* $UMEM_DEBUG setting */
 122 }
 123
 124 const char *
 125 _umem_logging_init(void)
 126 {
 127         return ("fail,contents"); /* $UMEM_LOGGING setting */
 128 }
 129 #endif
 130
 131 typedef enum {
 132         HELP_CLONE,
 133         HELP_CREATE,
 134         HELP_DESTROY,
 135         HELP_GET,
 136         HELP_INHERIT,
 137         HELP_UPGRADE,
 138         HELP_JAIL,
 139         HELP_UNJAIL,
 140         HELP_LIST,
 141         HELP_MOUNT,
 142         HELP_PROMOTE,
 143         HELP_RECEIVE,
 144         HELP_RENAME,
 145         HELP_ROLLBACK,
 146         HELP_SEND,
 147         HELP_SET,
 148         HELP_SHARE,
 149         HELP_SNAPSHOT,
 150         HELP_UNMOUNT,
 151         HELP_UNSHARE,
 152         HELP_ALLOW,
 153         HELP_UNALLOW,
 154         HELP_USERSPACE,
 155         HELP_GROUPSPACE,
 156         HELP_HOLD,
 157         HELP_HOLDS,
 158         HELP_RELEASE,
 159         HELP_DIFF,
 160         HELP_BOOKMARK,
 161 } zfs_help_t;
 162
 163 typedef struct zfs_command {
 164         const char      *name;
 165         int             (*func)(int argc, char **argv);
 166         zfs_help_t      usage;
 167 } zfs_command_t;
 168
 169 /*
 170  * Master command table.  Each ZFS command has a name, associated function, and
 171  * usage message.  The usage messages need to be internationalized, so we have
 172  * to have a function to return the usage message based on a command index.
 173  *
 174  * These commands are organized according to how they are displayed in the usage
 175  * message.  An empty command (one with a NULL name) indicates an empty line in
 176  * the generic usage message.
 177  */
 178 static zfs_command_t command_table[] = {
 179         { "create",     zfs_do_create,          HELP_CREATE             },
 180         { "destroy",    zfs_do_destroy,         HELP_DESTROY            },
 181         { NULL },
 182         { "snapshot",   zfs_do_snapshot,        HELP_SNAPSHOT           },
 183         { "rollback",   zfs_do_rollback,        HELP_ROLLBACK           },
 184         { "clone",      zfs_do_clone,           HELP_CLONE              },
 185         { "promote",    zfs_do_promote,         HELP_PROMOTE            },
 186         { "rename",     zfs_do_rename,          HELP_RENAME             },
 187         { "bookmark",   zfs_do_bookmark,        HELP_BOOKMARK           },
 188         { NULL },
 189         { "list",       zfs_do_list,            HELP_LIST               },
 190         { NULL },
 191         { "set",        zfs_do_set,             HELP_SET                },
 192         { "get",        zfs_do_get,             HELP_GET                },
 193         { "inherit",    zfs_do_inherit,         HELP_INHERIT            },
 194         { "upgrade",    zfs_do_upgrade,         HELP_UPGRADE            },
 195         { "userspace",  zfs_do_userspace,       HELP_USERSPACE          },
 196         { "groupspace", zfs_do_userspace,       HELP_GROUPSPACE         },
 197         { NULL },
 198         { "mount",      zfs_do_mount,           HELP_MOUNT              },
 199         { "unmount",    zfs_do_unmount,         HELP_UNMOUNT            },
 200         { "share",      zfs_do_share,           HELP_SHARE              },
 201         { "unshare",    zfs_do_unshare,         HELP_UNSHARE            },
 202         { NULL },
 203         { "send",       zfs_do_send,            HELP_SEND               },
 204         { "receive",    zfs_do_receive,         HELP_RECEIVE            },
 205         { NULL },
 206         { "allow",      zfs_do_allow,           HELP_ALLOW              },
 207         { NULL },
 208         { "unallow",    zfs_do_unallow,         HELP_UNALLOW            },
 209         { NULL },
 210         { "hold",       zfs_do_hold,            HELP_HOLD               },
 211         { "holds",      zfs_do_holds,           HELP_HOLDS              },
 212         { "release",    zfs_do_release,         HELP_RELEASE            },
 213         { "diff",       zfs_do_diff,            HELP_DIFF               },
 214         { NULL },
 215         { "jail",       zfs_do_jail,            HELP_JAIL               },
 216         { "unjail",     zfs_do_unjail,          HELP_UNJAIL             },
 217 };
 218
 219 #define NCOMMAND        (sizeof (command_table) / sizeof (command_table[0]))
 220
 221 zfs_command_t *current_command;
 222
 223 static const char *
 224 get_usage(zfs_help_t idx)
 225 {
 226         switch (idx) {
 227         case HELP_CLONE:
 228                 return (gettext("\tclone [-p] [-o property=value] ... "
 229                     "<snapshot> <filesystem|volume>\n"));
 230         case HELP_CREATE:
 231                 return (gettext("\tcreate [-pu] [-o property=value] ... "
 232                     "<filesystem>\n"
 233                     "\tcreate [-ps] [-b blocksize] [-o property=value] ... "
 234                     "-V <size> <volume>\n"));
 235         case HELP_DESTROY:
 236                 return (gettext("\tdestroy [-fnpRrv] <filesystem|volume>\n"
 237                     "\tdestroy [-dnpRrv] "
 238                     "<filesystem|volume>@<snap>[%<snap>][,...]\n"
 239                     "\tdestroy <filesystem|volume>#<bookmark>\n"));
 240         case HELP_GET:
 241                 return (gettext("\tget [-rHp] [-d max] "
 242                     "[-o \"all\" | field[,...]]\n"
 243                     "\t    [-t type[,...]] [-s source[,...]]\n"
 244                     "\t    <\"all\" | property[,...]> "
 245                     "[filesystem|volume|snapshot] ...\n"));
 246         case HELP_INHERIT:
 247                 return (gettext("\tinherit [-rS] <property> "
 248                     "<filesystem|volume|snapshot> ...\n"));
 249         case HELP_UPGRADE:
 250                 return (gettext("\tupgrade [-v]\n"
 251                     "\tupgrade [-r] [-V version] <-a | filesystem ...>\n"));
 252         case HELP_JAIL:
 253                 return (gettext("\tjail <jailid|jailname> <filesystem>\n"));
 254         case HELP_UNJAIL:
 255                 return (gettext("\tunjail <jailid|jailname> <filesystem>\n"));
 256         case HELP_LIST:
 257                 return (gettext("\tlist [-Hp] [-r|-d max] [-o property[,...]] "
 258                     "[-s property]...\n\t    [-S property]... [-t type[,...]] "
 259                     "[filesystem|volume|snapshot] ...\n"));
 260         case HELP_MOUNT:
 261                 return (gettext("\tmount\n"
 262                     "\tmount [-vO] [-o opts] <-a | filesystem>\n"));
 263         case HELP_PROMOTE:
 264                 return (gettext("\tpromote <clone-filesystem>\n"));
 265         case HELP_RECEIVE:
 266                 return (gettext("\treceive|recv [-vnsFu] <filesystem|volume|"
 267                     "snapshot>\n"
 268                     "\treceive|recv [-vnsFu] [-o origin=<snapshot>] [-d | -e] "
 269                     "<filesystem>\n"
 270                     "\treceive|recv -A <filesystem|volume>\n"));
 271         case HELP_RENAME:
 272                 return (gettext("\trename [-f] <filesystem|volume|snapshot> "
 273                     "<filesystem|volume|snapshot>\n"
 274                     "\trename [-f] -p <filesystem|volume> <filesystem|volume>\n"
 275                     "\trename -r <snapshot> <snapshot>\n"
 276                     "\trename -u [-p] <filesystem> <filesystem>"));
 277         case HELP_ROLLBACK:
 278                 return (gettext("\trollback [-rRf] <snapshot>\n"));
 279         case HELP_SEND:
 280                 return (gettext("\tsend [-DnPpRvLe] [-[iI] snapshot] "
 281                     "<snapshot>\n"
 282                     "\tsend [-Le] [-i snapshot|bookmark] "
 283                     "<filesystem|volume|snapshot>\n"
 284                     "\tsend [-nvPe] -t <receive_resume_token>\n"));
 285         case HELP_SET:
 286                 return (gettext("\tset <property=value> "
 287                     "<filesystem|volume|snapshot> ...\n"));
 288         case HELP_SHARE:
 289                 return (gettext("\tshare <-a | filesystem>\n"));
 290         case HELP_SNAPSHOT:
 291                 return (gettext("\tsnapshot|snap [-r] [-o property=value] ... "
 292                     "<filesystem|volume>@<snap> ...\n"));
 293         case HELP_UNMOUNT:
 294                 return (gettext("\tunmount|umount [-f] "
 295                     "<-a | filesystem|mountpoint>\n"));
 296         case HELP_UNSHARE:
 297                 return (gettext("\tunshare "
 298                     "<-a | filesystem|mountpoint>\n"));
 299         case HELP_ALLOW:
 300                 return (gettext("\tallow <filesystem|volume>\n"
 301                     "\tallow [-ldug] "
 302                     "<\"everyone\"|user|group>[,...] <perm|@setname>[,...]\n"
 303                     "\t    <filesystem|volume>\n"
 304                     "\tallow [-ld] -e <perm|@setname>[,...] "
 305                     "<filesystem|volume>\n"
 306                     "\tallow -c <perm|@setname>[,...] <filesystem|volume>\n"
 307                     "\tallow -s @setname <perm|@setname>[,...] "
 308                     "<filesystem|volume>\n"));
 309         case HELP_UNALLOW:
 310                 return (gettext("\tunallow [-rldug] "
 311                     "<\"everyone\"|user|group>[,...]\n"
 312                     "\t    [<perm|@setname>[,...]] <filesystem|volume>\n"
 313                     "\tunallow [-rld] -e [<perm|@setname>[,...]] "
 314                     "<filesystem|volume>\n"
 315                     "\tunallow [-r] -c [<perm|@setname>[,...]] "
 316                     "<filesystem|volume>\n"
 317                     "\tunallow [-r] -s @setname [<perm|@setname>[,...]] "
 318                     "<filesystem|volume>\n"));
 319         case HELP_USERSPACE:
 320                 return (gettext("\tuserspace [-Hinp] [-o field[,...]] "
 321                     "[-s field] ...\n"
 322                     "\t    [-S field] ... [-t type[,...]] "
 323                     "<filesystem|snapshot>\n"));
 324         case HELP_GROUPSPACE:
 325                 return (gettext("\tgroupspace [-Hinp] [-o field[,...]] "
 326                     "[-s field] ...\n"
 327                     "\t    [-S field] ... [-t type[,...]] "
 328                     "<filesystem|snapshot>\n"));
 329         case HELP_HOLD:
 330                 return (gettext("\thold [-r] <tag> <snapshot> ...\n"));
 331         case HELP_HOLDS:
 332                 return (gettext("\tholds [-r] <snapshot> ...\n"));
 333         case HELP_RELEASE:
 334                 return (gettext("\trelease [-r] <tag> <snapshot> ...\n"));
 335         case HELP_DIFF:
 336                 return (gettext("\tdiff [-FHt] <snapshot> "
 337                     "[snapshot|filesystem]\n"));
 338         case HELP_BOOKMARK:
 339                 return (gettext("\tbookmark <snapshot> <bookmark>\n"));
 340         }
 341
 342         abort();
 343         /* NOTREACHED */
 344 }
 345
 346 void
 347 nomem(void)
 348 {
 349         (void) fprintf(stderr, gettext("internal error: out of memory\n"));
 350         exit(1);
 351 }
 352
 353 /*
 354  * Utility function to guarantee malloc() success.
 355  */
 356
 357 void *
 358 safe_malloc(size_t size)
 359 {
 360         void *data;
 361
 362         if ((data = calloc(1, size)) == NULL)
 363                 nomem();
 364
 365         return (data);
 366 }
 367
 368 static char *
 369 safe_strdup(char *str)
 370 {
 371         char *dupstr = strdup(str);
 372
 373         if (dupstr == NULL)
 374                 nomem();
 375
 376         return (dupstr);
 377 }
 378
 379 /*
 380  * Callback routine that will print out information for each of
 381  * the properties.
 382  */
 383 static int
 384 usage_prop_cb(int prop, void *cb)
 385 {
 386         FILE *fp = cb;
 387
 388         (void) fprintf(fp, "\t%-15s ", zfs_prop_to_name(prop));
 389
 390         if (zfs_prop_readonly(prop))
 391                 (void) fprintf(fp, " NO    ");
 392         else
 393                 (void) fprintf(fp, "YES    ");
 394
 395         if (zfs_prop_inheritable(prop))
 396                 (void) fprintf(fp, "  YES   ");
 397         else
 398                 (void) fprintf(fp, "   NO   ");
 399
 400         if (zfs_prop_values(prop) == NULL)
 401                 (void) fprintf(fp, "-\n");
 402         else
 403                 (void) fprintf(fp, "%s\n", zfs_prop_values(prop));
 404
 405         return (ZPROP_CONT);
 406 }
 407
 408 /*
 409  * Display usage message.  If we're inside a command, display only the usage for
 410  * that command.  Otherwise, iterate over the entire command table and display
 411  * a complete usage message.
 412  */
 413 static void
 414 usage(boolean_t requested)
 415 {
 416         int i;
 417         boolean_t show_properties = B_FALSE;
 418         FILE *fp = requested ? stdout : stderr;
 419
 420         if (current_command == NULL) {
 421
 422                 (void) fprintf(fp, gettext("usage: zfs command args ...\n"));
 423                 (void) fprintf(fp,
 424                     gettext("where 'command' is one of the following:\n\n"));
 425
 426                 for (i = 0; i < NCOMMAND; i++) {
 427                         if (command_table[i].name == NULL)
 428                                 (void) fprintf(fp, "\n");
 429                         else
 430                                 (void) fprintf(fp, "%s",
 431                                     get_usage(command_table[i].usage));
 432                 }
 433
 434                 (void) fprintf(fp, gettext("\nEach dataset is of the form: "
 435                     "pool/[dataset/]*dataset[@name]\n"));
 436         } else {
 437                 (void) fprintf(fp, gettext("usage:\n"));
 438                 (void) fprintf(fp, "%s", get_usage(current_command->usage));
 439         }
 440
 441         if (current_command != NULL &&
 442             (strcmp(current_command->name, "set") == 0 ||
 443             strcmp(current_command->name, "get") == 0 ||
 444             strcmp(current_command->name, "inherit") == 0 ||
 445             strcmp(current_command->name, "list") == 0))
 446                 show_properties = B_TRUE;
 447
 448         if (show_properties) {
 449                 (void) fprintf(fp,
 450                     gettext("\nThe following properties are supported:\n"));
 451
 452                 (void) fprintf(fp, "\n\t%-14s %s  %s   %s\n\n",
 453                     "PROPERTY", "EDIT", "INHERIT", "VALUES");
 454
 455                 /* Iterate over all properties */
 456                 (void) zprop_iter(usage_prop_cb, fp, B_FALSE, B_TRUE,
 457                     ZFS_TYPE_DATASET);
 458
 459                 (void) fprintf(fp, "\t%-15s ", "userused@...");
 460                 (void) fprintf(fp, " NO       NO   <size>\n");
 461                 (void) fprintf(fp, "\t%-15s ", "groupused@...");
 462                 (void) fprintf(fp, " NO       NO   <size>\n");
 463                 (void) fprintf(fp, "\t%-15s ", "userquota@...");
 464                 (void) fprintf(fp, "YES       NO   <size> | none\n");
 465                 (void) fprintf(fp, "\t%-15s ", "groupquota@...");
 466                 (void) fprintf(fp, "YES       NO   <size> | none\n");
 467                 (void) fprintf(fp, "\t%-15s ", "written@<snap>");
 468                 (void) fprintf(fp, " NO       NO   <size>\n");
 469
 470                 (void) fprintf(fp, gettext("\nSizes are specified in bytes "
 471                     "with standard units such as K, M, G, etc.\n"));
 472                 (void) fprintf(fp, gettext("\nUser-defined properties can "
 473                     "be specified by using a name containing a colon (:).\n"));
 474                 (void) fprintf(fp, gettext("\nThe {user|group}{used|quota}@ "
 475                     "properties must be appended with\n"
 476                     "a user or group specifier of one of these forms:\n"
 477                     "    POSIX name      (eg: \"matt\")\n"
 478                     "    POSIX id        (eg: \"126829\")\n"
 479                     "    SMB name@domain (eg: \"matt@sun\")\n"
 480                     "    SMB SID         (eg: \"S-1-234-567-89\")\n"));
 481         } else {
 482                 (void) fprintf(fp,
 483                     gettext("\nFor the property list, run: %s\n"),
 484                     "zfs set|get");
 485                 (void) fprintf(fp,
 486                     gettext("\nFor the delegated permission list, run: %s\n"),
 487                     "zfs allow|unallow");
 488         }
 489
 490         /*
 491          * See comments at end of main().
 492          */
 493         if (getenv("ZFS_ABORT") != NULL) {
 494                 (void) printf("dumping core by request\n");
 495                 abort();
 496         }
 497
 498         exit(requested ? 0 : 2);
 499 }
 500
 501 static int
 502 parseprop(nvlist_t *props, char *propname)
 503 {
 504         char *propval, *strval;
 505
 506         if ((propval = strchr(propname, '=')) == NULL) {
 507                 (void) fprintf(stderr, gettext("missing "
 508                     "'=' for -o option\n"));
 509                 return (-1);
 510         }
 511         *propval = '\0';
 512         propval++;
 513         if (nvlist_lookup_string(props, propname, &strval) == 0) {
 514                 (void) fprintf(stderr, gettext("property '%s' "
 515                     "specified multiple times\n"), propname);
 516                 return (-1);
 517         }
 518         if (nvlist_add_string(props, propname, propval) != 0)
 519                 nomem();
 520         return (0);
 521 }
 522
 523 static int
 524 parse_depth(char *opt, int *flags)
 525 {
 526         char *tmp;
 527         int depth;
 528
 529         depth = (int)strtol(opt, &tmp, 0);
 530         if (*tmp) {
 531                 (void) fprintf(stderr,
 532                     gettext("%s is not an integer\n"), opt);
 533                 usage(B_FALSE);
 534         }
 535         if (depth < 0) {
 536                 (void) fprintf(stderr,
 537                     gettext("Depth can not be negative.\n"));
 538                 usage(B_FALSE);
 539         }
 540         *flags |= (ZFS_ITER_DEPTH_LIMIT|ZFS_ITER_RECURSE);
 541         return (depth);
 542 }
 543
 544 #define PROGRESS_DELAY 2                /* seconds */
 545
 546 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";
 547 static time_t pt_begin;
 548 static char *pt_header = NULL;
 549 static boolean_t pt_shown;
 550
 551 static void
 552 start_progress_timer(void)
 553 {
 554         pt_begin = time(NULL) + PROGRESS_DELAY;
 555         pt_shown = B_FALSE;
 556 }
 557
 558 static void
 559 set_progress_header(char *header)
 560 {
 561         assert(pt_header == NULL);
 562         pt_header = safe_strdup(header);
 563         if (pt_shown) {
 564                 (void) printf("%s: ", header);
 565                 (void) fflush(stdout);
 566         }
 567 }
 568
 569 static void
 570 update_progress(char *update)
 571 {
 572         if (!pt_shown && time(NULL) > pt_begin) {
 573                 int len = strlen(update);
 574
 575                 (void) printf("%s: %s%*.*s", pt_header, update, len, len,
 576                     pt_reverse);
 577                 (void) fflush(stdout);
 578                 pt_shown = B_TRUE;
 579         } else if (pt_shown) {
 580                 int len = strlen(update);
 581
 582                 (void) printf("%s%*.*s", update, len, len, pt_reverse);
 583                 (void) fflush(stdout);
 584         }
 585 }
 586
 587 static void
 588 finish_progress(char *done)
 589 {
 590         if (pt_shown) {
 591                 (void) printf("%s\n", done);
 592                 (void) fflush(stdout);
 593         }
 594         free(pt_header);
 595         pt_header = NULL;
 596 }
 597
 598 /*
 599  * Check if the dataset is mountable and should be automatically mounted.
 600  */
 601 static boolean_t
 602 should_auto_mount(zfs_handle_t *zhp)
 603 {
 604         if (!zfs_prop_valid_for_type(ZFS_PROP_CANMOUNT, zfs_get_type(zhp)))
 605                 return (B_FALSE);
 606         return (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) == ZFS_CANMOUNT_ON);
 607 }
 608
 609 /*
 610  * zfs clone [-p] [-o prop=value] ... <snap> <fs | vol>
 611  *
 612  * Given an existing dataset, create a writable copy whose initial contents
 613  * are the same as the source.  The newly created dataset maintains a
 614  * dependency on the original; the original cannot be destroyed so long as
 615  * the clone exists.
 616  *
 617  * The '-p' flag creates all the non-existing ancestors of the target first.
 618  */
 619 static int
 620 zfs_do_clone(int argc, char **argv)
 621 {
 622         zfs_handle_t *zhp = NULL;
 623         boolean_t parents = B_FALSE;
 624         nvlist_t *props;
 625         int ret = 0;
 626         int c;
 627
 628         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
 629                 nomem();
 630
 631         /* check options */
 632         while ((c = getopt(argc, argv, "o:p")) != -1) {
 633                 switch (c) {
 634                 case 'o':
 635                         if (parseprop(props, optarg))
 636                                 return (1);
 637                         break;
 638                 case 'p':
 639                         parents = B_TRUE;
 640                         break;
 641                 case '?':
 642                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
 643                             optopt);
 644                         goto usage;
 645                 }
 646         }
 647
 648         argc -= optind;
 649         argv += optind;
 650
 651         /* check number of arguments */
 652         if (argc < 1) {
 653                 (void) fprintf(stderr, gettext("missing source dataset "
 654                     "argument\n"));
 655                 goto usage;
 656         }
 657         if (argc < 2) {
 658                 (void) fprintf(stderr, gettext("missing target dataset "
 659                     "argument\n"));
 660                 goto usage;
 661         }
 662         if (argc > 2) {
 663                 (void) fprintf(stderr, gettext("too many arguments\n"));
 664                 goto usage;
 665         }
 666
 667         /* open the source dataset */
 668         if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
 669                 return (1);
 670
 671         if (parents && zfs_name_valid(argv[1], ZFS_TYPE_FILESYSTEM |
 672             ZFS_TYPE_VOLUME)) {
 673                 /*
 674                  * Now create the ancestors of the target dataset.  If the
 675                  * target already exists and '-p' option was used we should not
 676                  * complain.
 677                  */
 678                 if (zfs_dataset_exists(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM |
 679                     ZFS_TYPE_VOLUME))
 680                         return (0);
 681                 if (zfs_create_ancestors(g_zfs, argv[1]) != 0)
 682                         return (1);
 683         }
 684
 685         /* pass to libzfs */
 686         ret = zfs_clone(zhp, argv[1], props);
 687
 688         /* create the mountpoint if necessary */
 689         if (ret == 0) {
 690                 zfs_handle_t *clone;
 691
 692                 clone = zfs_open(g_zfs, argv[1], ZFS_TYPE_DATASET);
 693                 if (clone != NULL) {
 694                         /*
 695                          * If the user doesn't want the dataset
 696                          * automatically mounted, then skip the mount/share
 697                          * step.
 698                          */
 699                         if (should_auto_mount(clone)) {
 700                                 if ((ret = zfs_mount(clone, NULL, 0)) != 0) {
 701                                         (void) fprintf(stderr, gettext("clone "
 702                                             "successfully created, "
 703                                             "but not mounted\n"));
 704                                 } else if ((ret = zfs_share(clone)) != 0) {
 705                                         (void) fprintf(stderr, gettext("clone "
 706                                             "successfully created, "
 707                                             "but not shared\n"));
 708                                 }
 709                         }
 710                         zfs_close(clone);
 711                 }
 712         }
 713
 714         zfs_close(zhp);
 715         nvlist_free(props);
 716
 717         return (!!ret);
 718
 719 usage:
 720         if (zhp)
 721                 zfs_close(zhp);
 722         nvlist_free(props);
 723         usage(B_FALSE);
 724         return (-1);
 725 }
 726
 727 /*
 728  * zfs create [-pu] [-o prop=value] ... fs
 729  * zfs create [-ps] [-b blocksize] [-o prop=value] ... -V vol size
 730  *
 731  * Create a new dataset.  This command can be used to create filesystems
 732  * and volumes.  Snapshot creation is handled by 'zfs snapshot'.
 733  * For volumes, the user must specify a size to be used.
 734  *
 735  * The '-s' flag applies only to volumes, and indicates that we should not try
 736  * to set the reservation for this volume.  By default we set a reservation
 737  * equal to the size for any volume.  For pools with SPA_VERSION >=
 738  * SPA_VERSION_REFRESERVATION, we set a refreservation instead.
 739  *
 740  * The '-p' flag creates all the non-existing ancestors of the target first.
 741  *
 742  * The '-u' flag prevents mounting of newly created file system.
 743  */
 744 static int
 745 zfs_do_create(int argc, char **argv)
 746 {
 747         zfs_type_t type = ZFS_TYPE_FILESYSTEM;
 748         zfs_handle_t *zhp = NULL;
 749         uint64_t volsize;
 750         int c;
 751         boolean_t noreserve = B_FALSE;
 752         boolean_t bflag = B_FALSE;
 753         boolean_t parents = B_FALSE;
 754         boolean_t nomount = B_FALSE;
 755         int ret = 1;
 756         nvlist_t *props;
 757         uint64_t intval;
 758
 759         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
 760                 nomem();
 761
 762         /* check options */
 763         while ((c = getopt(argc, argv, ":V:b:so:pu")) != -1) {
 764                 switch (c) {
 765                 case 'V':
 766                         type = ZFS_TYPE_VOLUME;
 767                         if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
 768                                 (void) fprintf(stderr, gettext("bad volume "
 769                                     "size '%s': %s\n"), optarg,
 770                                     libzfs_error_description(g_zfs));
 771                                 goto error;
 772                         }
 773
 774                         if (nvlist_add_uint64(props,
 775                             zfs_prop_to_name(ZFS_PROP_VOLSIZE), intval) != 0)
 776                                 nomem();
 777                         volsize = intval;
 778                         break;
 779                 case 'p':
 780                         parents = B_TRUE;
 781                         break;
 782                 case 'b':
 783                         bflag = B_TRUE;
 784                         if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
 785                                 (void) fprintf(stderr, gettext("bad volume "
 786                                     "block size '%s': %s\n"), optarg,
 787                                     libzfs_error_description(g_zfs));
 788                                 goto error;
 789                         }
 790
 791                         if (nvlist_add_uint64(props,
 792                             zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
 793                             intval) != 0)
 794                                 nomem();
 795                         break;
 796                 case 'o':
 797                         if (parseprop(props, optarg) != 0)
 798                                 goto error;
 799                         break;
 800                 case 's':
 801                         noreserve = B_TRUE;
 802                         break;
 803                 case 'u':
 804                         nomount = B_TRUE;
 805                         break;
 806                 case ':':
 807                         (void) fprintf(stderr, gettext("missing size "
 808                             "argument\n"));
 809                         goto badusage;
 810                 case '?':
 811                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
 812                             optopt);
 813                         goto badusage;
 814                 }
 815         }
 816
 817         if ((bflag || noreserve) && type != ZFS_TYPE_VOLUME) {
 818                 (void) fprintf(stderr, gettext("'-s' and '-b' can only be "
 819                     "used when creating a volume\n"));
 820                 goto badusage;
 821         }
 822         if (nomount && type != ZFS_TYPE_FILESYSTEM) {
 823                 (void) fprintf(stderr, gettext("'-u' can only be "
 824                     "used when creating a file system\n"));
 825                 goto badusage;
 826         }
 827
 828         argc -= optind;
 829         argv += optind;
 830
 831         /* check number of arguments */
 832         if (argc == 0) {
 833                 (void) fprintf(stderr, gettext("missing %s argument\n"),
 834                     zfs_type_to_name(type));
 835                 goto badusage;
 836         }
 837         if (argc > 1) {
 838                 (void) fprintf(stderr, gettext("too many arguments\n"));
 839                 goto badusage;
 840         }
 841
 842         if (type == ZFS_TYPE_VOLUME && !noreserve) {
 843                 zpool_handle_t *zpool_handle;
 844                 uint64_t spa_version;
 845                 char *p;
 846                 zfs_prop_t resv_prop;
 847                 char *strval;
 848
 849                 if (p = strchr(argv[0], '/'))
 850                         *p = '\0';
 851                 zpool_handle = zpool_open(g_zfs, argv[0]);
 852                 if (p != NULL)
 853                         *p = '/';
 854                 if (zpool_handle == NULL)
 855                         goto error;
 856                 spa_version = zpool_get_prop_int(zpool_handle,
 857                     ZPOOL_PROP_VERSION, NULL);
 858                 zpool_close(zpool_handle);
 859                 if (spa_version >= SPA_VERSION_REFRESERVATION)
 860                         resv_prop = ZFS_PROP_REFRESERVATION;
 861                 else
 862                         resv_prop = ZFS_PROP_RESERVATION;
 863                 volsize = zvol_volsize_to_reservation(volsize, props);
 864
 865                 if (nvlist_lookup_string(props, zfs_prop_to_name(resv_prop),
 866                     &strval) != 0) {
 867                         if (nvlist_add_uint64(props,
 868                             zfs_prop_to_name(resv_prop), volsize) != 0) {
 869                                 nvlist_free(props);
 870                                 nomem();
 871                         }
 872                 }
 873         }
 874
 875         if (parents && zfs_name_valid(argv[0], type)) {
 876                 /*
 877                  * Now create the ancestors of target dataset.  If the target
 878                  * already exists and '-p' option was used we should not
 879                  * complain.
 880                  */
 881                 if (zfs_dataset_exists(g_zfs, argv[0], type)) {
 882                         ret = 0;
 883                         goto error;
 884                 }
 885                 if (zfs_create_ancestors(g_zfs, argv[0]) != 0)
 886                         goto error;
 887         }
 888
 889         /* pass to libzfs */
 890         if (zfs_create(g_zfs, argv[0], type, props) != 0)
 891                 goto error;
 892
 893         if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL)
 894                 goto error;
 895
 896         ret = 0;
 897
 898         /*
 899          * Mount and/or share the new filesystem as appropriate.  We provide a
 900          * verbose error message to let the user know that their filesystem was
 901          * in fact created, even if we failed to mount or share it.
 902          * If the user doesn't want the dataset automatically mounted,
 903          * then skip the mount/share step altogether.
 904          */
 905         if (!nomount && should_auto_mount(zhp)) {
 906                 if (zfs_mount(zhp, NULL, 0) != 0) {
 907                         (void) fprintf(stderr, gettext("filesystem "
 908                             "successfully created, but not mounted\n"));
 909                         ret = 1;
 910                 } else if (zfs_share(zhp) != 0) {
 911                         (void) fprintf(stderr, gettext("filesystem "
 912                             "successfully created, but not shared\n"));
 913                         ret = 1;
 914                 }
 915         }
 916
 917 error:
 918         if (zhp)
 919                 zfs_close(zhp);
 920         nvlist_free(props);
 921         return (ret);
 922 badusage:
 923         nvlist_free(props);
 924         usage(B_FALSE);
 925         return (2);
 926 }
 927
 928 /*
 929  * zfs destroy [-rRf] <fs, vol>
 930  * zfs destroy [-rRd] <snap>
 931  *
 932  *      -r      Recursively destroy all children
 933  *      -R      Recursively destroy all dependents, including clones
 934  *      -f      Force unmounting of any dependents
 935  *      -d      If we can't destroy now, mark for deferred destruction
 936  *
 937  * Destroys the given dataset.  By default, it will unmount any filesystems,
 938  * and refuse to destroy a dataset that has any dependents.  A dependent can
 939  * either be a child, or a clone of a child.
 940  */
 941 typedef struct destroy_cbdata {
 942         boolean_t       cb_first;
 943         boolean_t       cb_force;
 944         boolean_t       cb_recurse;
 945         boolean_t       cb_error;
 946         boolean_t       cb_doclones;
 947         zfs_handle_t    *cb_target;
 948         boolean_t       cb_defer_destroy;
 949         boolean_t       cb_verbose;
 950         boolean_t       cb_parsable;
 951         boolean_t       cb_dryrun;
 952         nvlist_t        *cb_nvl;
 953         nvlist_t        *cb_batchedsnaps;
 954
 955         /* first snap in contiguous run */
 956         char            *cb_firstsnap;
 957         /* previous snap in contiguous run */
 958         char            *cb_prevsnap;
 959         int64_t         cb_snapused;
 960         char            *cb_snapspec;
 961         char            *cb_bookmark;
 962 } destroy_cbdata_t;
 963
 964 /*
 965  * Check for any dependents based on the '-r' or '-R' flags.
 966  */
 967 static int
 968 destroy_check_dependent(zfs_handle_t *zhp, void *data)
 969 {
 970         destroy_cbdata_t *cbp = data;
 971         const char *tname = zfs_get_name(cbp->cb_target);
 972         const char *name = zfs_get_name(zhp);
 973
 974         if (strncmp(tname, name, strlen(tname)) == 0 &&
 975             (name[strlen(tname)] == '/' || name[strlen(tname)] == '@')) {
 976                 /*
 977                  * This is a direct descendant, not a clone somewhere else in
 978                  * the hierarchy.
 979                  */
 980                 if (cbp->cb_recurse)
 981                         goto out;
 982
 983                 if (cbp->cb_first) {
 984                         (void) fprintf(stderr, gettext("cannot destroy '%s': "
 985                             "%s has children\n"),
 986                             zfs_get_name(cbp->cb_target),
 987                             zfs_type_to_name(zfs_get_type(cbp->cb_target)));
 988                         (void) fprintf(stderr, gettext("use '-r' to destroy "
 989                             "the following datasets:\n"));
 990                         cbp->cb_first = B_FALSE;
 991                         cbp->cb_error = B_TRUE;
 992                 }
 993
 994                 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
 995         } else {
 996                 /*
 997                  * This is a clone.  We only want to report this if the '-r'
 998                  * wasn't specified, or the target is a snapshot.
 999                  */
1000                 if (!cbp->cb_recurse &&
1001                     zfs_get_type(cbp->cb_target) != ZFS_TYPE_SNAPSHOT)
1002                         goto out;
1003
1004                 if (cbp->cb_first) {
1005                         (void) fprintf(stderr, gettext("cannot destroy '%s': "
1006                             "%s has dependent clones\n"),
1007                             zfs_get_name(cbp->cb_target),
1008                             zfs_type_to_name(zfs_get_type(cbp->cb_target)));
1009                         (void) fprintf(stderr, gettext("use '-R' to destroy "
1010                             "the following datasets:\n"));
1011                         cbp->cb_first = B_FALSE;
1012                         cbp->cb_error = B_TRUE;
1013                         cbp->cb_dryrun = B_TRUE;
1014                 }
1015
1016                 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
1017         }
1018
1019 out:
1020         zfs_close(zhp);
1021         return (0);
1022 }
1023
1024 static int
1025 destroy_callback(zfs_handle_t *zhp, void *data)
1026 {
1027         destroy_cbdata_t *cb = data;
1028         const char *name = zfs_get_name(zhp);
1029
1030         if (cb->cb_verbose) {
1031                 if (cb->cb_parsable) {
1032                         (void) printf("destroy\t%s\n", name);
1033                 } else if (cb->cb_dryrun) {
1034                         (void) printf(gettext("would destroy %s\n"),
1035                             name);
1036                 } else {
1037                         (void) printf(gettext("will destroy %s\n"),
1038                             name);
1039                 }
1040         }
1041
1042         /*
1043          * Ignore pools (which we've already flagged as an error before getting
1044          * here).
1045          */
1046         if (strchr(zfs_get_name(zhp), '/') == NULL &&
1047             zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
1048                 zfs_close(zhp);
1049                 return (0);
1050         }
1051         if (cb->cb_dryrun) {
1052                 zfs_close(zhp);
1053                 return (0);
1054         }
1055
1056         /*
1057          * We batch up all contiguous snapshots (even of different
1058          * filesystems) and destroy them with one ioctl.  We can't
1059          * simply do all snap deletions and then all fs deletions,
1060          * because we must delete a clone before its origin.
1061          */
1062         if (zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT) {
1063                 fnvlist_add_boolean(cb->cb_batchedsnaps, name);
1064         } else {
1065                 int error = zfs_destroy_snaps_nvl(g_zfs,
1066                     cb->cb_batchedsnaps, B_FALSE);
1067                 fnvlist_free(cb->cb_batchedsnaps);
1068                 cb->cb_batchedsnaps = fnvlist_alloc();
1069
1070                 if (error != 0 ||
1071                     zfs_unmount(zhp, NULL, cb->cb_force ? MS_FORCE : 0) != 0 ||
1072                     zfs_destroy(zhp, cb->cb_defer_destroy) != 0) {
1073                         zfs_close(zhp);
1074                         return (-1);
1075                 }
1076         }
1077
1078         zfs_close(zhp);
1079         return (0);
1080 }
1081
1082 static int
1083 destroy_print_cb(zfs_handle_t *zhp, void *arg)
1084 {
1085         destroy_cbdata_t *cb = arg;
1086         const char *name = zfs_get_name(zhp);
1087         int err = 0;
1088
1089         if (nvlist_exists(cb->cb_nvl, name)) {
1090                 if (cb->cb_firstsnap == NULL)
1091                         cb->cb_firstsnap = strdup(name);
1092                 if (cb->cb_prevsnap != NULL)
1093                         free(cb->cb_prevsnap);
1094                 /* this snap continues the current range */
1095                 cb->cb_prevsnap = strdup(name);
1096                 if (cb->cb_firstsnap == NULL || cb->cb_prevsnap == NULL)
1097                         nomem();
1098                 if (cb->cb_verbose) {
1099                         if (cb->cb_parsable) {
1100                                 (void) printf("destroy\t%s\n", name);
1101                         } else if (cb->cb_dryrun) {
1102                                 (void) printf(gettext("would destroy %s\n"),
1103                                     name);
1104                         } else {
1105                                 (void) printf(gettext("will destroy %s\n"),
1106                                     name);
1107                         }
1108                 }
1109         } else if (cb->cb_firstsnap != NULL) {
1110                 /* end of this range */
1111                 uint64_t used = 0;
1112                 err = lzc_snaprange_space(cb->cb_firstsnap,
1113                     cb->cb_prevsnap, &used);
1114                 cb->cb_snapused += used;
1115                 free(cb->cb_firstsnap);
1116                 cb->cb_firstsnap = NULL;
1117                 free(cb->cb_prevsnap);
1118                 cb->cb_prevsnap = NULL;
1119         }
1120         zfs_close(zhp);
1121         return (err);
1122 }
1123
1124 static int
1125 destroy_print_snapshots(zfs_handle_t *fs_zhp, destroy_cbdata_t *cb)
1126 {
1127         int err = 0;
1128         assert(cb->cb_firstsnap == NULL);
1129         assert(cb->cb_prevsnap == NULL);
1130         err = zfs_iter_snapshots_sorted(fs_zhp, destroy_print_cb, cb);
1131         if (cb->cb_firstsnap != NULL) {
1132                 uint64_t used = 0;
1133                 if (err == 0) {
1134                         err = lzc_snaprange_space(cb->cb_firstsnap,
1135                             cb->cb_prevsnap, &used);
1136                 }
1137                 cb->cb_snapused += used;
1138                 free(cb->cb_firstsnap);
1139                 cb->cb_firstsnap = NULL;
1140                 free(cb->cb_prevsnap);
1141                 cb->cb_prevsnap = NULL;
1142         }
1143         return (err);
1144 }
1145
1146 static int
1147 snapshot_to_nvl_cb(zfs_handle_t *zhp, void *arg)
1148 {
1149         destroy_cbdata_t *cb = arg;
1150         int err = 0;
1151
1152         /* Check for clones. */
1153         if (!cb->cb_doclones && !cb->cb_defer_destroy) {
1154                 cb->cb_target = zhp;
1155                 cb->cb_first = B_TRUE;
1156                 err = zfs_iter_dependents(zhp, B_TRUE,
1157                     destroy_check_dependent, cb);
1158         }
1159
1160         if (err == 0) {
1161                 if (nvlist_add_boolean(cb->cb_nvl, zfs_get_name(zhp)))
1162                         nomem();
1163         }
1164         zfs_close(zhp);
1165         return (err);
1166 }
1167
1168 static int
1169 gather_snapshots(zfs_handle_t *zhp, void *arg)
1170 {
1171         destroy_cbdata_t *cb = arg;
1172         int err = 0;
1173
1174         err = zfs_iter_snapspec(zhp, cb->cb_snapspec, snapshot_to_nvl_cb, cb);
1175         if (err == ENOENT)
1176                 err = 0;
1177         if (err != 0)
1178                 goto out;
1179
1180         if (cb->cb_verbose) {
1181                 err = destroy_print_snapshots(zhp, cb);
1182                 if (err != 0)
1183                         goto out;
1184         }
1185
1186         if (cb->cb_recurse)
1187                 err = zfs_iter_filesystems(zhp, gather_snapshots, cb);
1188
1189 out:
1190         zfs_close(zhp);
1191         return (err);
1192 }
1193
1194 static int
1195 destroy_clones(destroy_cbdata_t *cb)
1196 {
1197         nvpair_t *pair;
1198         for (pair = nvlist_next_nvpair(cb->cb_nvl, NULL);
1199             pair != NULL;
1200             pair = nvlist_next_nvpair(cb->cb_nvl, pair)) {
1201                 zfs_handle_t *zhp = zfs_open(g_zfs, nvpair_name(pair),
1202                     ZFS_TYPE_SNAPSHOT);
1203                 if (zhp != NULL) {
1204                         boolean_t defer = cb->cb_defer_destroy;
1205                         int err = 0;
1206
1207                         /*
1208                          * We can't defer destroy non-snapshots, so set it to
1209                          * false while destroying the clones.
1210                          */
1211                         cb->cb_defer_destroy = B_FALSE;
1212                         err = zfs_iter_dependents(zhp, B_FALSE,
1213                             destroy_callback, cb);
1214                         cb->cb_defer_destroy = defer;
1215                         zfs_close(zhp);
1216                         if (err != 0)
1217                                 return (err);
1218                 }
1219         }
1220         return (0);
1221 }
1222
1223 static int
1224 zfs_do_destroy(int argc, char **argv)
1225 {
1226         destroy_cbdata_t cb = { 0 };
1227         int rv = 0;
1228         int err = 0;
1229         int c;
1230         zfs_handle_t *zhp = NULL;
1231         char *at, *pound;
1232         zfs_type_t type = ZFS_TYPE_DATASET;
1233
1234         /* check options */
1235         while ((c = getopt(argc, argv, "vpndfrR")) != -1) {
1236                 switch (c) {
1237                 case 'v':
1238                         cb.cb_verbose = B_TRUE;
1239                         break;
1240                 case 'p':
1241                         cb.cb_verbose = B_TRUE;
1242                         cb.cb_parsable = B_TRUE;
1243                         break;
1244                 case 'n':
1245                         cb.cb_dryrun = B_TRUE;
1246                         break;
1247                 case 'd':
1248                         cb.cb_defer_destroy = B_TRUE;
1249                         type = ZFS_TYPE_SNAPSHOT;
1250                         break;
1251                 case 'f':
1252                         cb.cb_force = B_TRUE;
1253                         break;
1254                 case 'r':
1255                         cb.cb_recurse = B_TRUE;
1256                         break;
1257                 case 'R':
1258                         cb.cb_recurse = B_TRUE;
1259                         cb.cb_doclones = B_TRUE;
1260                         break;
1261                 case '?':
1262                 default:
1263                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1264                             optopt);
1265                         usage(B_FALSE);
1266                 }
1267         }
1268
1269         argc -= optind;
1270         argv += optind;
1271
1272         /* check number of arguments */
1273         if (argc == 0) {
1274                 (void) fprintf(stderr, gettext("missing dataset argument\n"));
1275                 usage(B_FALSE);
1276         }
1277         if (argc > 1) {
1278                 (void) fprintf(stderr, gettext("too many arguments\n"));
1279                 usage(B_FALSE);
1280         }
1281
1282         at = strchr(argv[0], '@');
1283         pound = strchr(argv[0], '#');
1284         if (at != NULL) {
1285
1286                 /* Build the list of snaps to destroy in cb_nvl. */
1287                 cb.cb_nvl = fnvlist_alloc();
1288
1289                 *at = '\0';
1290                 zhp = zfs_open(g_zfs, argv[0],
1291                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
1292                 if (zhp == NULL)
1293                         return (1);
1294
1295                 cb.cb_snapspec = at + 1;
1296                 if (gather_snapshots(zfs_handle_dup(zhp), &cb) != 0 ||
1297                     cb.cb_error) {
1298                         rv = 1;
1299                         goto out;
1300                 }
1301
1302                 if (nvlist_empty(cb.cb_nvl)) {
1303                         (void) fprintf(stderr, gettext("could not find any "
1304                             "snapshots to destroy; check snapshot names.\n"));
1305                         rv = 1;
1306                         goto out;
1307                 }
1308
1309                 if (cb.cb_verbose) {
1310                         char buf[16];
1311                         zfs_nicenum(cb.cb_snapused, buf, sizeof (buf));
1312                         if (cb.cb_parsable) {
1313                                 (void) printf("reclaim\t%llu\n",
1314                                     cb.cb_snapused);
1315                         } else if (cb.cb_dryrun) {
1316                                 (void) printf(gettext("would reclaim %s\n"),
1317                                     buf);
1318                         } else {
1319                                 (void) printf(gettext("will reclaim %s\n"),
1320                                     buf);
1321                         }
1322                 }
1323
1324                 if (!cb.cb_dryrun) {
1325                         if (cb.cb_doclones) {
1326                                 cb.cb_batchedsnaps = fnvlist_alloc();
1327                                 err = destroy_clones(&cb);
1328                                 if (err == 0) {
1329                                         err = zfs_destroy_snaps_nvl(g_zfs,
1330                                             cb.cb_batchedsnaps, B_FALSE);
1331                                 }
1332                                 if (err != 0) {
1333                                         rv = 1;
1334                                         goto out;
1335                                 }
1336                         }
1337                         if (err == 0) {
1338                                 err = zfs_destroy_snaps_nvl(g_zfs, cb.cb_nvl,
1339                                     cb.cb_defer_destroy);
1340                         }
1341                 }
1342
1343                 if (err != 0)
1344                         rv = 1;
1345         } else if (pound != NULL) {
1346                 int err;
1347                 nvlist_t *nvl;
1348
1349                 if (cb.cb_dryrun) {
1350                         (void) fprintf(stderr,
1351                             "dryrun is not supported with bookmark\n");
1352                         return (-1);
1353                 }
1354
1355                 if (cb.cb_defer_destroy) {
1356                         (void) fprintf(stderr,
1357                             "defer destroy is not supported with bookmark\n");
1358                         return (-1);
1359                 }
1360
1361                 if (cb.cb_recurse) {
1362                         (void) fprintf(stderr,
1363                             "recursive is not supported with bookmark\n");
1364                         return (-1);
1365                 }
1366
1367                 if (!zfs_bookmark_exists(argv[0])) {
1368                         (void) fprintf(stderr, gettext("bookmark '%s' "
1369                             "does not exist.\n"), argv[0]);
1370                         return (1);
1371                 }
1372
1373                 nvl = fnvlist_alloc();
1374                 fnvlist_add_boolean(nvl, argv[0]);
1375
1376                 err = lzc_destroy_bookmarks(nvl, NULL);
1377                 if (err != 0) {
1378                         (void) zfs_standard_error(g_zfs, err,
1379                             "cannot destroy bookmark");
1380                 }
1381
1382                 nvlist_free(cb.cb_nvl);
1383
1384                 return (err);
1385         } else {
1386                 /* Open the given dataset */
1387                 if ((zhp = zfs_open(g_zfs, argv[0], type)) == NULL)
1388                         return (1);
1389
1390                 cb.cb_target = zhp;
1391
1392                 /*
1393                  * Perform an explicit check for pools before going any further.
1394                  */
1395                 if (!cb.cb_recurse && strchr(zfs_get_name(zhp), '/') == NULL &&
1396                     zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
1397                         (void) fprintf(stderr, gettext("cannot destroy '%s': "
1398                             "operation does not apply to pools\n"),
1399                             zfs_get_name(zhp));
1400                         (void) fprintf(stderr, gettext("use 'zfs destroy -r "
1401                             "%s' to destroy all datasets in the pool\n"),
1402                             zfs_get_name(zhp));
1403                         (void) fprintf(stderr, gettext("use 'zpool destroy %s' "
1404                             "to destroy the pool itself\n"), zfs_get_name(zhp));
1405                         rv = 1;
1406                         goto out;
1407                 }
1408
1409                 /*
1410                  * Check for any dependents and/or clones.
1411                  */
1412                 cb.cb_first = B_TRUE;
1413                 if (!cb.cb_doclones &&
1414                     zfs_iter_dependents(zhp, B_TRUE, destroy_check_dependent,
1415                     &cb) != 0) {
1416                         rv = 1;
1417                         goto out;
1418                 }
1419
1420                 if (cb.cb_error) {
1421                         rv = 1;
1422                         goto out;
1423                 }
1424
1425                 cb.cb_batchedsnaps = fnvlist_alloc();
1426                 if (zfs_iter_dependents(zhp, B_FALSE, destroy_callback,
1427                     &cb) != 0) {
1428                         rv = 1;
1429                         goto out;
1430                 }
1431
1432                 /*
1433                  * Do the real thing.  The callback will close the
1434                  * handle regardless of whether it succeeds or not.
1435                  */
1436                 err = destroy_callback(zhp, &cb);
1437                 zhp = NULL;
1438                 if (err == 0) {
1439                         err = zfs_destroy_snaps_nvl(g_zfs,
1440                             cb.cb_batchedsnaps, cb.cb_defer_destroy);
1441                 }
1442                 if (err != 0)
1443                         rv = 1;
1444         }
1445
1446 out:
1447         fnvlist_free(cb.cb_batchedsnaps);
1448         fnvlist_free(cb.cb_nvl);
1449         if (zhp != NULL)
1450                 zfs_close(zhp);
1451         return (rv);
1452 }
1453
1454 static boolean_t
1455 is_recvd_column(zprop_get_cbdata_t *cbp)
1456 {
1457         int i;
1458         zfs_get_column_t col;
1459
1460         for (i = 0; i < ZFS_GET_NCOLS &&
1461             (col = cbp->cb_columns[i]) != GET_COL_NONE; i++)
1462                 if (col == GET_COL_RECVD)
1463                         return (B_TRUE);
1464         return (B_FALSE);
1465 }
1466
1467 /*
1468  * zfs get [-rHp] [-o all | field[,field]...] [-s source[,source]...]
1469  *      < all | property[,property]... > < fs | snap | vol > ...
1470  *
1471  *      -r      recurse over any child datasets
1472  *      -H      scripted mode.  Headers are stripped, and fields are separated
1473  *              by tabs instead of spaces.
1474  *      -o      Set of fields to display.  One of "name,property,value,
1475  *              received,source". Default is "name,property,value,source".
1476  *              "all" is an alias for all five.
1477  *      -s      Set of sources to allow.  One of
1478  *              "local,default,inherited,received,temporary,none".  Default is
1479  *              all six.
1480  *      -p      Display values in parsable (literal) format.
1481  *
1482  *  Prints properties for the given datasets.  The user can control which
1483  *  columns to display as well as which property types to allow.
1484  */
1485
1486 /*
1487  * Invoked to display the properties for a single dataset.
1488  */
1489 static int
1490 get_callback(zfs_handle_t *zhp, void *data)
1491 {
1492         char buf[ZFS_MAXPROPLEN];
1493         char rbuf[ZFS_MAXPROPLEN];
1494         zprop_source_t sourcetype;
1495         char source[ZFS_MAXNAMELEN];
1496         zprop_get_cbdata_t *cbp = data;
1497         nvlist_t *user_props = zfs_get_user_props(zhp);
1498         zprop_list_t *pl = cbp->cb_proplist;
1499         nvlist_t *propval;
1500         char *strval;
1501         char *sourceval;
1502         boolean_t received = is_recvd_column(cbp);
1503
1504         for (; pl != NULL; pl = pl->pl_next) {
1505                 char *recvdval = NULL;
1506                 /*
1507                  * Skip the special fake placeholder.  This will also skip over
1508                  * the name property when 'all' is specified.
1509                  */
1510                 if (pl->pl_prop == ZFS_PROP_NAME &&
1511                     pl == cbp->cb_proplist)
1512                         continue;
1513
1514                 if (pl->pl_prop != ZPROP_INVAL) {
1515                         if (zfs_prop_get(zhp, pl->pl_prop, buf,
1516                             sizeof (buf), &sourcetype, source,
1517                             sizeof (source),
1518                             cbp->cb_literal) != 0) {
1519                                 if (pl->pl_all)
1520                                         continue;
1521                                 if (!zfs_prop_valid_for_type(pl->pl_prop,
1522                                     ZFS_TYPE_DATASET)) {
1523                                         (void) fprintf(stderr,
1524                                             gettext("No such property '%s'\n"),
1525                                             zfs_prop_to_name(pl->pl_prop));
1526                                         continue;
1527                                 }
1528                                 sourcetype = ZPROP_SRC_NONE;
1529                                 (void) strlcpy(buf, "-", sizeof (buf));
1530                         }
1531
1532                         if (received && (zfs_prop_get_recvd(zhp,
1533                             zfs_prop_to_name(pl->pl_prop), rbuf, sizeof (rbuf),
1534                             cbp->cb_literal) == 0))
1535                                 recvdval = rbuf;
1536
1537                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1538                             zfs_prop_to_name(pl->pl_prop),
1539                             buf, sourcetype, source, recvdval);
1540                 } else if (zfs_prop_userquota(pl->pl_user_prop)) {
1541                         sourcetype = ZPROP_SRC_LOCAL;
1542
1543                         if (zfs_prop_get_userquota(zhp, pl->pl_user_prop,
1544                             buf, sizeof (buf), cbp->cb_literal) != 0) {
1545                                 sourcetype = ZPROP_SRC_NONE;
1546                                 (void) strlcpy(buf, "-", sizeof (buf));
1547                         }
1548
1549                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1550                             pl->pl_user_prop, buf, sourcetype, source, NULL);
1551                 } else if (zfs_prop_written(pl->pl_user_prop)) {
1552                         sourcetype = ZPROP_SRC_LOCAL;
1553
1554                         if (zfs_prop_get_written(zhp, pl->pl_user_prop,
1555                             buf, sizeof (buf), cbp->cb_literal) != 0) {
1556                                 sourcetype = ZPROP_SRC_NONE;
1557                                 (void) strlcpy(buf, "-", sizeof (buf));
1558                         }
1559
1560                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1561                             pl->pl_user_prop, buf, sourcetype, source, NULL);
1562                 } else {
1563                         if (nvlist_lookup_nvlist(user_props,
1564                             pl->pl_user_prop, &propval) != 0) {
1565                                 if (pl->pl_all)
1566                                         continue;
1567                                 sourcetype = ZPROP_SRC_NONE;
1568                                 strval = "-";
1569                         } else {
1570                                 verify(nvlist_lookup_string(propval,
1571                                     ZPROP_VALUE, &strval) == 0);
1572                                 verify(nvlist_lookup_string(propval,
1573                                     ZPROP_SOURCE, &sourceval) == 0);
1574
1575                                 if (strcmp(sourceval,
1576                                     zfs_get_name(zhp)) == 0) {
1577                                         sourcetype = ZPROP_SRC_LOCAL;
1578                                 } else if (strcmp(sourceval,
1579                                     ZPROP_SOURCE_VAL_RECVD) == 0) {
1580                                         sourcetype = ZPROP_SRC_RECEIVED;
1581                                 } else {
1582                                         sourcetype = ZPROP_SRC_INHERITED;
1583                                         (void) strlcpy(source,
1584                                             sourceval, sizeof (source));
1585                                 }
1586                         }
1587
1588                         if (received && (zfs_prop_get_recvd(zhp,
1589                             pl->pl_user_prop, rbuf, sizeof (rbuf),
1590                             cbp->cb_literal) == 0))
1591                                 recvdval = rbuf;
1592
1593                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1594                             pl->pl_user_prop, strval, sourcetype,
1595                             source, recvdval);
1596                 }
1597         }
1598
1599         return (0);
1600 }
1601
1602 static int
1603 zfs_do_get(int argc, char **argv)
1604 {
1605         zprop_get_cbdata_t cb = { 0 };
1606         int i, c, flags = ZFS_ITER_ARGS_CAN_BE_PATHS;
1607         int types = ZFS_TYPE_DATASET;
1608         char *value, *fields;
1609         int ret = 0;
1610         int limit = 0;
1611         zprop_list_t fake_name = { 0 };
1612
1613         /*
1614          * Set up default columns and sources.
1615          */
1616         cb.cb_sources = ZPROP_SRC_ALL;
1617         cb.cb_columns[0] = GET_COL_NAME;
1618         cb.cb_columns[1] = GET_COL_PROPERTY;
1619         cb.cb_columns[2] = GET_COL_VALUE;
1620         cb.cb_columns[3] = GET_COL_SOURCE;
1621         cb.cb_type = ZFS_TYPE_DATASET;
1622
1623         /* check options */
1624         while ((c = getopt(argc, argv, ":d:o:s:rt:Hp")) != -1) {
1625                 switch (c) {
1626                 case 'p':
1627                         cb.cb_literal = B_TRUE;
1628                         break;
1629                 case 'd':
1630                         limit = parse_depth(optarg, &flags);
1631                         break;
1632                 case 'r':
1633                         flags |= ZFS_ITER_RECURSE;
1634                         break;
1635                 case 'H':
1636                         cb.cb_scripted = B_TRUE;
1637                         break;
1638                 case ':':
1639                         (void) fprintf(stderr, gettext("missing argument for "
1640                             "'%c' option\n"), optopt);
1641                         usage(B_FALSE);
1642                         break;
1643                 case 'o':
1644                         /*
1645                          * Process the set of columns to display.  We zero out
1646                          * the structure to give us a blank slate.
1647                          */
1648                         bzero(&cb.cb_columns, sizeof (cb.cb_columns));
1649                         i = 0;
1650                         while (*optarg != '\0') {
1651                                 static char *col_subopts[] =
1652                                     { "name", "property", "value", "received",
1653                                     "source", "all", NULL };
1654
1655                                 if (i == ZFS_GET_NCOLS) {
1656                                         (void) fprintf(stderr, gettext("too "
1657                                             "many fields given to -o "
1658                                             "option\n"));
1659                                         usage(B_FALSE);
1660                                 }
1661
1662                                 switch (getsubopt(&optarg, col_subopts,
1663                                     &value)) {
1664                                 case 0:
1665                                         cb.cb_columns[i++] = GET_COL_NAME;
1666                                         break;
1667                                 case 1:
1668                                         cb.cb_columns[i++] = GET_COL_PROPERTY;
1669                                         break;
1670                                 case 2:
1671                                         cb.cb_columns[i++] = GET_COL_VALUE;
1672                                         break;
1673                                 case 3:
1674                                         cb.cb_columns[i++] = GET_COL_RECVD;
1675                                         flags |= ZFS_ITER_RECVD_PROPS;
1676                                         break;
1677                                 case 4:
1678                                         cb.cb_columns[i++] = GET_COL_SOURCE;
1679                                         break;
1680                                 case 5:
1681                                         if (i > 0) {
1682                                                 (void) fprintf(stderr,
1683                                                     gettext("\"all\" conflicts "
1684                                                     "with specific fields "
1685                                                     "given to -o option\n"));
1686                                                 usage(B_FALSE);
1687                                         }
1688                                         cb.cb_columns[0] = GET_COL_NAME;
1689                                         cb.cb_columns[1] = GET_COL_PROPERTY;
1690                                         cb.cb_columns[2] = GET_COL_VALUE;
1691                                         cb.cb_columns[3] = GET_COL_RECVD;
1692                                         cb.cb_columns[4] = GET_COL_SOURCE;
1693                                         flags |= ZFS_ITER_RECVD_PROPS;
1694                                         i = ZFS_GET_NCOLS;
1695                                         break;
1696                                 default:
1697                                         (void) fprintf(stderr,
1698                                             gettext("invalid column name "
1699                                             "'%s'\n"), value);
1700                                         usage(B_FALSE);
1701                                 }
1702                         }
1703                         break;
1704
1705                 case 's':
1706                         cb.cb_sources = 0;
1707                         while (*optarg != '\0') {
1708                                 static char *source_subopts[] = {
1709                                         "local", "default", "inherited",
1710                                         "received", "temporary", "none",
1711                                         NULL };
1712
1713                                 switch (getsubopt(&optarg, source_subopts,
1714                                     &value)) {
1715                                 case 0:
1716                                         cb.cb_sources |= ZPROP_SRC_LOCAL;
1717                                         break;
1718                                 case 1:
1719                                         cb.cb_sources |= ZPROP_SRC_DEFAULT;
1720                                         break;
1721                                 case 2:
1722                                         cb.cb_sources |= ZPROP_SRC_INHERITED;
1723                                         break;
1724                                 case 3:
1725                                         cb.cb_sources |= ZPROP_SRC_RECEIVED;
1726                                         break;
1727                                 case 4:
1728                                         cb.cb_sources |= ZPROP_SRC_TEMPORARY;
1729                                         break;
1730                                 case 5:
1731                                         cb.cb_sources |= ZPROP_SRC_NONE;
1732                                         break;
1733                                 default:
1734                                         (void) fprintf(stderr,
1735                                             gettext("invalid source "
1736                                             "'%s'\n"), value);
1737                                         usage(B_FALSE);
1738                                 }
1739                         }
1740                         break;
1741
1742                 case 't':
1743                         types = 0;
1744                         flags &= ~ZFS_ITER_PROP_LISTSNAPS;
1745                         while (*optarg != '\0') {
1746                                 static char *type_subopts[] = { "filesystem",
1747                                     "volume", "snapshot", "bookmark",
1748                                     "all", NULL };
1749
1750                                 switch (getsubopt(&optarg, type_subopts,
1751                                     &value)) {
1752                                 case 0:
1753                                         types |= ZFS_TYPE_FILESYSTEM;
1754                                         break;
1755                                 case 1:
1756                                         types |= ZFS_TYPE_VOLUME;
1757                                         break;
1758                                 case 2:
1759                                         types |= ZFS_TYPE_SNAPSHOT;
1760                                         break;
1761                                 case 3:
1762                                         types |= ZFS_TYPE_BOOKMARK;
1763                                         break;
1764                                 case 4:
1765                                         types = ZFS_TYPE_DATASET |
1766                                             ZFS_TYPE_BOOKMARK;
1767                                         break;
1768
1769                                 default:
1770                                         (void) fprintf(stderr,
1771                                             gettext("invalid type '%s'\n"),
1772                                             value);
1773                                         usage(B_FALSE);
1774                                 }
1775                         }
1776                         break;
1777
1778                 case '?':
1779                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1780                             optopt);
1781                         usage(B_FALSE);
1782                 }
1783         }
1784
1785         argc -= optind;
1786         argv += optind;
1787
1788         if (argc < 1) {
1789                 (void) fprintf(stderr, gettext("missing property "
1790                     "argument\n"));
1791                 usage(B_FALSE);
1792         }
1793
1794         fields = argv[0];
1795
1796         if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
1797             != 0)
1798                 usage(B_FALSE);
1799
1800         argc--;
1801         argv++;
1802
1803         /*
1804          * As part of zfs_expand_proplist(), we keep track of the maximum column
1805          * width for each property.  For the 'NAME' (and 'SOURCE') columns, we
1806          * need to know the maximum name length.  However, the user likely did
1807          * not specify 'name' as one of the properties to fetch, so we need to
1808          * make sure we always include at least this property for
1809          * print_get_headers() to work properly.
1810          */
1811         if (cb.cb_proplist != NULL) {
1812                 fake_name.pl_prop = ZFS_PROP_NAME;
1813                 fake_name.pl_width = strlen(gettext("NAME"));
1814                 fake_name.pl_next = cb.cb_proplist;
1815                 cb.cb_proplist = &fake_name;
1816         }
1817
1818         cb.cb_first = B_TRUE;
1819
1820         /* run for each object */
1821         ret = zfs_for_each(argc, argv, flags, types, NULL,
1822             &cb.cb_proplist, limit, get_callback, &cb);
1823
1824         if (cb.cb_proplist == &fake_name)
1825                 zprop_free_list(fake_name.pl_next);
1826         else
1827                 zprop_free_list(cb.cb_proplist);
1828
1829         return (ret);
1830 }
1831
1832 /*
1833  * inherit [-rS] <property> <fs|vol> ...
1834  *
1835  *      -r      Recurse over all children
1836  *      -S      Revert to received value, if any
1837  *
1838  * For each dataset specified on the command line, inherit the given property
1839  * from its parent.  Inheriting a property at the pool level will cause it to
1840  * use the default value.  The '-r' flag will recurse over all children, and is
1841  * useful for setting a property on a hierarchy-wide basis, regardless of any
1842  * local modifications for each dataset.
1843  */
1844
1845 typedef struct inherit_cbdata {
1846         const char *cb_propname;
1847         boolean_t cb_received;
1848 } inherit_cbdata_t;
1849
1850 static int
1851 inherit_recurse_cb(zfs_handle_t *zhp, void *data)
1852 {
1853         inherit_cbdata_t *cb = data;
1854         zfs_prop_t prop = zfs_name_to_prop(cb->cb_propname);
1855
1856         /*
1857          * If we're doing it recursively, then ignore properties that
1858          * are not valid for this type of dataset.
1859          */
1860         if (prop != ZPROP_INVAL &&
1861             !zfs_prop_valid_for_type(prop, zfs_get_type(zhp)))
1862                 return (0);
1863
1864         return (zfs_prop_inherit(zhp, cb->cb_propname, cb->cb_received) != 0);
1865 }
1866
1867 static int
1868 inherit_cb(zfs_handle_t *zhp, void *data)
1869 {
1870         inherit_cbdata_t *cb = data;
1871
1872         return (zfs_prop_inherit(zhp, cb->cb_propname, cb->cb_received) != 0);
1873 }
1874
1875 static int
1876 zfs_do_inherit(int argc, char **argv)
1877 {
1878         int c;
1879         zfs_prop_t prop;
1880         inherit_cbdata_t cb = { 0 };
1881         char *propname;
1882         int ret = 0;
1883         int flags = 0;
1884         boolean_t received = B_FALSE;
1885
1886         /* check options */
1887         while ((c = getopt(argc, argv, "rS")) != -1) {
1888                 switch (c) {
1889                 case 'r':
1890                         flags |= ZFS_ITER_RECURSE;
1891                         break;
1892                 case 'S':
1893                         received = B_TRUE;
1894                         break;
1895                 case '?':
1896                 default:
1897                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1898                             optopt);
1899                         usage(B_FALSE);
1900                 }
1901         }
1902
1903         argc -= optind;
1904         argv += optind;
1905
1906         /* check number of arguments */
1907         if (argc < 1) {
1908                 (void) fprintf(stderr, gettext("missing property argument\n"));
1909                 usage(B_FALSE);
1910         }
1911         if (argc < 2) {
1912                 (void) fprintf(stderr, gettext("missing dataset argument\n"));
1913                 usage(B_FALSE);
1914         }
1915
1916         propname = argv[0];
1917         argc--;
1918         argv++;
1919
1920         if ((prop = zfs_name_to_prop(propname)) != ZPROP_INVAL) {
1921                 if (zfs_prop_readonly(prop)) {
1922                         (void) fprintf(stderr, gettext(
1923                             "%s property is read-only\n"),
1924                             propname);
1925                         return (1);
1926                 }
1927                 if (!zfs_prop_inheritable(prop) && !received) {
1928                         (void) fprintf(stderr, gettext("'%s' property cannot "
1929                             "be inherited\n"), propname);
1930                         if (prop == ZFS_PROP_QUOTA ||
1931                             prop == ZFS_PROP_RESERVATION ||
1932                             prop == ZFS_PROP_REFQUOTA ||
1933                             prop == ZFS_PROP_REFRESERVATION) {
1934                                 (void) fprintf(stderr, gettext("use 'zfs set "
1935                                     "%s=none' to clear\n"), propname);
1936                                 (void) fprintf(stderr, gettext("use 'zfs "
1937                                     "inherit -S %s' to revert to received "
1938                                     "value\n"), propname);
1939                         }
1940                         return (1);
1941                 }
1942                 if (received && (prop == ZFS_PROP_VOLSIZE ||
1943                     prop == ZFS_PROP_VERSION)) {
1944                         (void) fprintf(stderr, gettext("'%s' property cannot "
1945                             "be reverted to a received value\n"), propname);
1946                         return (1);
1947                 }
1948         } else if (!zfs_prop_user(propname)) {
1949                 (void) fprintf(stderr, gettext("invalid property '%s'\n"),
1950                     propname);
1951                 usage(B_FALSE);
1952         }
1953
1954         cb.cb_propname = propname;
1955         cb.cb_received = received;
1956
1957         if (flags & ZFS_ITER_RECURSE) {
1958                 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
1959                     NULL, NULL, 0, inherit_recurse_cb, &cb);
1960         } else {
1961                 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
1962                     NULL, NULL, 0, inherit_cb, &cb);
1963         }
1964
1965         return (ret);
1966 }
1967
1968 typedef struct upgrade_cbdata {
1969         uint64_t cb_numupgraded;
1970         uint64_t cb_numsamegraded;
1971         uint64_t cb_numfailed;
1972         uint64_t cb_version;
1973         boolean_t cb_newer;
1974         boolean_t cb_foundone;
1975         char cb_lastfs[ZFS_MAXNAMELEN];
1976 } upgrade_cbdata_t;
1977
1978 static int
1979 same_pool(zfs_handle_t *zhp, const char *name)
1980 {
1981         int len1 = strcspn(name, "/@");
1982         const char *zhname = zfs_get_name(zhp);
1983         int len2 = strcspn(zhname, "/@");
1984
1985         if (len1 != len2)
1986                 return (B_FALSE);
1987         return (strncmp(name, zhname, len1) == 0);
1988 }
1989
1990 static int
1991 upgrade_list_callback(zfs_handle_t *zhp, void *data)
1992 {
1993         upgrade_cbdata_t *cb = data;
1994         int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
1995
1996         /* list if it's old/new */
1997         if ((!cb->cb_newer && version < ZPL_VERSION) ||
1998             (cb->cb_newer && version > ZPL_VERSION)) {
1999                 char *str;
2000                 if (cb->cb_newer) {
2001                         str = gettext("The following filesystems are "
2002                             "formatted using a newer software version and\n"
2003                             "cannot be accessed on the current system.\n\n");
2004                 } else {
2005                         str = gettext("The following filesystems are "
2006                             "out of date, and can be upgraded.  After being\n"
2007                             "upgraded, these filesystems (and any 'zfs send' "
2008                             "streams generated from\n"
2009                             "subsequent snapshots) will no longer be "
2010                             "accessible by older software versions.\n\n");
2011                 }
2012
2013                 if (!cb->cb_foundone) {
2014                         (void) puts(str);
2015                         (void) printf(gettext("VER  FILESYSTEM\n"));
2016                         (void) printf(gettext("---  ------------\n"));
2017                         cb->cb_foundone = B_TRUE;
2018                 }
2019
2020                 (void) printf("%2u   %s\n", version, zfs_get_name(zhp));
2021         }
2022
2023         return (0);
2024 }
2025
2026 static int
2027 upgrade_set_callback(zfs_handle_t *zhp, void *data)
2028 {
2029         upgrade_cbdata_t *cb = data;
2030         int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
2031         int needed_spa_version;
2032         int spa_version;
2033
2034         if (zfs_spa_version(zhp, &spa_version) < 0)
2035                 return (-1);
2036
2037         needed_spa_version = zfs_spa_version_map(cb->cb_version);
2038
2039         if (needed_spa_version < 0)
2040                 return (-1);
2041
2042         if (spa_version < needed_spa_version) {
2043                 /* can't upgrade */
2044                 (void) printf(gettext("%s: can not be "
2045                     "upgraded; the pool version needs to first "
2046                     "be upgraded\nto version %d\n\n"),
2047                     zfs_get_name(zhp), needed_spa_version);
2048                 cb->cb_numfailed++;
2049                 return (0);
2050         }
2051
2052         /* upgrade */
2053         if (version < cb->cb_version) {
2054                 char verstr[16];
2055                 (void) snprintf(verstr, sizeof (verstr),
2056                     "%llu", cb->cb_version);
2057                 if (cb->cb_lastfs[0] && !same_pool(zhp, cb->cb_lastfs)) {
2058                         /*
2059                          * If they did "zfs upgrade -a", then we could
2060                          * be doing ioctls to different pools.  We need
2061                          * to log this history once to each pool, and bypass
2062                          * the normal history logging that happens in main().
2063                          */
2064                         (void) zpool_log_history(g_zfs, history_str);
2065                         log_history = B_FALSE;
2066                 }
2067                 if (zfs_prop_set(zhp, "version", verstr) == 0)
2068                         cb->cb_numupgraded++;
2069                 else
2070                         cb->cb_numfailed++;
2071                 (void) strcpy(cb->cb_lastfs, zfs_get_name(zhp));
2072         } else if (version > cb->cb_version) {
2073                 /* can't downgrade */
2074                 (void) printf(gettext("%s: can not be downgraded; "
2075                     "it is already at version %u\n"),
2076                     zfs_get_name(zhp), version);
2077                 cb->cb_numfailed++;
2078         } else {
2079                 cb->cb_numsamegraded++;
2080         }
2081         return (0);
2082 }
2083
2084 /*
2085  * zfs upgrade
2086  * zfs upgrade -v
2087  * zfs upgrade [-r] [-V <version>] <-a | filesystem>
2088  */
2089 static int
2090 zfs_do_upgrade(int argc, char **argv)
2091 {
2092         boolean_t all = B_FALSE;
2093         boolean_t showversions = B_FALSE;
2094         int ret = 0;
2095         upgrade_cbdata_t cb = { 0 };
2096         int c;
2097         int flags = ZFS_ITER_ARGS_CAN_BE_PATHS;
2098
2099         /* check options */
2100         while ((c = getopt(argc, argv, "rvV:a")) != -1) {
2101                 switch (c) {
2102                 case 'r':
2103                         flags |= ZFS_ITER_RECURSE;
2104                         break;
2105                 case 'v':
2106                         showversions = B_TRUE;
2107                         break;
2108                 case 'V':
2109                         if (zfs_prop_string_to_index(ZFS_PROP_VERSION,
2110                             optarg, &cb.cb_version) != 0) {
2111                                 (void) fprintf(stderr,
2112                                     gettext("invalid version %s\n"), optarg);
2113                                 usage(B_FALSE);
2114                         }
2115                         break;
2116                 case 'a':
2117                         all = B_TRUE;
2118                         break;
2119                 case '?':
2120                 default:
2121                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2122                             optopt);
2123                         usage(B_FALSE);
2124                 }
2125         }
2126
2127         argc -= optind;
2128         argv += optind;
2129
2130         if ((!all && !argc) && ((flags & ZFS_ITER_RECURSE) | cb.cb_version))
2131                 usage(B_FALSE);
2132         if (showversions && (flags & ZFS_ITER_RECURSE || all ||
2133             cb.cb_version || argc))
2134                 usage(B_FALSE);
2135         if ((all || argc) && (showversions))
2136                 usage(B_FALSE);
2137         if (all && argc)
2138                 usage(B_FALSE);
2139
2140         if (showversions) {
2141                 /* Show info on available versions. */
2142                 (void) printf(gettext("The following filesystem versions are "
2143                     "supported:\n\n"));
2144                 (void) printf(gettext("VER  DESCRIPTION\n"));
2145                 (void) printf("---  -----------------------------------------"
2146                     "---------------\n");
2147                 (void) printf(gettext(" 1   Initial ZFS filesystem version\n"));
2148                 (void) printf(gettext(" 2   Enhanced directory entries\n"));
2149                 (void) printf(gettext(" 3   Case insensitive and filesystem "
2150                     "user identifier (FUID)\n"));
2151                 (void) printf(gettext(" 4   userquota, groupquota "
2152                     "properties\n"));
2153                 (void) printf(gettext(" 5   System attributes\n"));
2154                 (void) printf(gettext("\nFor more information on a particular "
2155                     "version, including supported releases,\n"));
2156                 (void) printf("see the ZFS Administration Guide.\n\n");
2157                 ret = 0;
2158         } else if (argc || all) {
2159                 /* Upgrade filesystems */
2160                 if (cb.cb_version == 0)
2161                         cb.cb_version = ZPL_VERSION;
2162                 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_FILESYSTEM,
2163                     NULL, NULL, 0, upgrade_set_callback, &cb);
2164                 (void) printf(gettext("%llu filesystems upgraded\n"),
2165                     cb.cb_numupgraded);
2166                 if (cb.cb_numsamegraded) {
2167                         (void) printf(gettext("%llu filesystems already at "
2168                             "this version\n"),
2169                             cb.cb_numsamegraded);
2170                 }
2171                 if (cb.cb_numfailed != 0)
2172                         ret = 1;
2173         } else {
2174                 /* List old-version filesytems */
2175                 boolean_t found;
2176                 (void) printf(gettext("This system is currently running "
2177                     "ZFS filesystem version %llu.\n\n"), ZPL_VERSION);
2178
2179                 flags |= ZFS_ITER_RECURSE;
2180                 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
2181                     NULL, NULL, 0, upgrade_list_callback, &cb);
2182
2183                 found = cb.cb_foundone;
2184                 cb.cb_foundone = B_FALSE;
2185                 cb.cb_newer = B_TRUE;
2186
2187                 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
2188                     NULL, NULL, 0, upgrade_list_callback, &cb);
2189
2190                 if (!cb.cb_foundone && !found) {
2191                         (void) printf(gettext("All filesystems are "
2192                             "formatted with the current version.\n"));
2193                 }
2194         }
2195
2196         return (ret);
2197 }
2198
2199 /*
2200  * zfs userspace [-Hinp] [-o field[,...]] [-s field [-s field]...]
2201  *               [-S field [-S field]...] [-t type[,...]] filesystem | snapshot
2202  * zfs groupspace [-Hinp] [-o field[,...]] [-s field [-s field]...]
2203  *                [-S field [-S field]...] [-t type[,...]] filesystem | snapshot
2204  *
2205  *      -H      Scripted mode; elide headers and separate columns by tabs.
2206  *      -i      Translate SID to POSIX ID.
2207  *      -n      Print numeric ID instead of user/group name.
2208  *      -o      Control which fields to display.
2209  *      -p      Use exact (parsable) numeric output.
2210  *      -s      Specify sort columns, descending order.
2211  *      -S      Specify sort columns, ascending order.
2212  *      -t      Control which object types to display.
2213  *
2214  *      Displays space consumed by, and quotas on, each user in the specified
2215  *      filesystem or snapshot.
2216  */
2217
2218 /* us_field_types, us_field_hdr and us_field_names should be kept in sync */
2219 enum us_field_types {
2220         USFIELD_TYPE,
2221         USFIELD_NAME,
2222         USFIELD_USED,
2223         USFIELD_QUOTA
2224 };
2225 static char *us_field_hdr[] = { "TYPE", "NAME", "USED", "QUOTA" };
2226 static char *us_field_names[] = { "type", "name", "used", "quota" };
2227 #define USFIELD_LAST    (sizeof (us_field_names) / sizeof (char *))
2228
2229 #define USTYPE_PSX_GRP  (1 << 0)
2230 #define USTYPE_PSX_USR  (1 << 1)
2231 #define USTYPE_SMB_GRP  (1 << 2)
2232 #define USTYPE_SMB_USR  (1 << 3)
2233 #define USTYPE_ALL      \
2234         (USTYPE_PSX_GRP | USTYPE_PSX_USR | USTYPE_SMB_GRP | USTYPE_SMB_USR)
2235
2236 static int us_type_bits[] = {
2237         USTYPE_PSX_GRP,
2238         USTYPE_PSX_USR,
2239         USTYPE_SMB_GRP,
2240         USTYPE_SMB_USR,
2241         USTYPE_ALL
2242 };
2243 static char *us_type_names[] = { "posixgroup", "posixuser", "smbgroup",
2244         "smbuser", "all" };
2245
2246 typedef struct us_node {
2247         nvlist_t        *usn_nvl;
2248         uu_avl_node_t   usn_avlnode;
2249         uu_list_node_t  usn_listnode;
2250 } us_node_t;
2251
2252 typedef struct us_cbdata {
2253         nvlist_t        **cb_nvlp;
2254         uu_avl_pool_t   *cb_avl_pool;
2255         uu_avl_t        *cb_avl;
2256         boolean_t       cb_numname;
2257         boolean_t       cb_nicenum;
2258         boolean_t       cb_sid2posix;
2259         zfs_userquota_prop_t cb_prop;
2260         zfs_sort_column_t *cb_sortcol;
2261         size_t          cb_width[USFIELD_LAST];
2262 } us_cbdata_t;
2263
2264 static boolean_t us_populated = B_FALSE;
2265
2266 typedef struct {
2267         zfs_sort_column_t *si_sortcol;
2268         boolean_t       si_numname;
2269 } us_sort_info_t;
2270
2271 static int
2272 us_field_index(char *field)
2273 {
2274         int i;
2275
2276         for (i = 0; i < USFIELD_LAST; i++) {
2277                 if (strcmp(field, us_field_names[i]) == 0)
2278                         return (i);
2279         }
2280
2281         return (-1);
2282 }
2283
2284 static int
2285 us_compare(const void *larg, const void *rarg, void *unused)
2286 {
2287         const us_node_t *l = larg;
2288         const us_node_t *r = rarg;
2289         us_sort_info_t *si = (us_sort_info_t *)unused;
2290         zfs_sort_column_t *sortcol = si->si_sortcol;
2291         boolean_t numname = si->si_numname;
2292         nvlist_t *lnvl = l->usn_nvl;
2293         nvlist_t *rnvl = r->usn_nvl;
2294         int rc = 0;
2295         boolean_t lvb, rvb;
2296
2297         for (; sortcol != NULL; sortcol = sortcol->sc_next) {
2298                 char *lvstr = "";
2299                 char *rvstr = "";
2300                 uint32_t lv32 = 0;
2301                 uint32_t rv32 = 0;
2302                 uint64_t lv64 = 0;
2303                 uint64_t rv64 = 0;
2304                 zfs_prop_t prop = sortcol->sc_prop;
2305                 const char *propname = NULL;
2306                 boolean_t reverse = sortcol->sc_reverse;
2307
2308                 switch (prop) {
2309                 case ZFS_PROP_TYPE:
2310                         propname = "type";
2311                         (void) nvlist_lookup_uint32(lnvl, propname, &lv32);
2312                         (void) nvlist_lookup_uint32(rnvl, propname, &rv32);
2313                         if (rv32 != lv32)
2314                                 rc = (rv32 < lv32) ? 1 : -1;
2315                         break;
2316                 case ZFS_PROP_NAME:
2317                         propname = "name";
2318                         if (numname) {
2319                                 (void) nvlist_lookup_uint64(lnvl, propname,
2320                                     &lv64);
2321                                 (void) nvlist_lookup_uint64(rnvl, propname,
2322                                     &rv64);
2323                                 if (rv64 != lv64)
2324                                         rc = (rv64 < lv64) ? 1 : -1;
2325                         } else {
2326                                 (void) nvlist_lookup_string(lnvl, propname,
2327                                     &lvstr);
2328                                 (void) nvlist_lookup_string(rnvl, propname,
2329                                     &rvstr);
2330                                 rc = strcmp(lvstr, rvstr);
2331                         }
2332                         break;
2333                 case ZFS_PROP_USED:
2334                 case ZFS_PROP_QUOTA:
2335                         if (!us_populated)
2336                                 break;
2337                         if (prop == ZFS_PROP_USED)
2338                                 propname = "used";
2339                         else
2340                                 propname = "quota";
2341                         (void) nvlist_lookup_uint64(lnvl, propname, &lv64);
2342                         (void) nvlist_lookup_uint64(rnvl, propname, &rv64);
2343                         if (rv64 != lv64)
2344                                 rc = (rv64 < lv64) ? 1 : -1;
2345                         break;
2346                 }
2347
2348                 if (rc != 0) {
2349                         if (rc < 0)
2350                                 return (reverse ? 1 : -1);
2351                         else
2352                                 return (reverse ? -1 : 1);
2353                 }
2354         }
2355
2356         /*
2357          * If entries still seem to be the same, check if they are of the same
2358          * type (smbentity is added only if we are doing SID to POSIX ID
2359          * translation where we can have duplicate type/name combinations).
2360          */
2361         if (nvlist_lookup_boolean_value(lnvl, "smbentity", &lvb) == 0 &&
2362             nvlist_lookup_boolean_value(rnvl, "smbentity", &rvb) == 0 &&
2363             lvb != rvb)
2364                 return (lvb < rvb ? -1 : 1);
2365
2366         return (0);
2367 }
2368
2369 static inline const char *
2370 us_type2str(unsigned field_type)
2371 {
2372         switch (field_type) {
2373         case USTYPE_PSX_USR:
2374                 return ("POSIX User");
2375         case USTYPE_PSX_GRP:
2376                 return ("POSIX Group");
2377         case USTYPE_SMB_USR:
2378                 return ("SMB User");
2379         case USTYPE_SMB_GRP:
2380                 return ("SMB Group");
2381         default:
2382                 return ("Undefined");
2383         }
2384 }
2385
2386 static int
2387 userspace_cb(void *arg, const char *domain, uid_t rid, uint64_t space)
2388 {
2389         us_cbdata_t *cb = (us_cbdata_t *)arg;
2390         zfs_userquota_prop_t prop = cb->cb_prop;
2391         char *name = NULL;
2392         char *propname;
2393         char sizebuf[32];
2394         us_node_t *node;
2395         uu_avl_pool_t *avl_pool = cb->cb_avl_pool;
2396         uu_avl_t *avl = cb->cb_avl;
2397         uu_avl_index_t idx;
2398         nvlist_t *props;
2399         us_node_t *n;
2400         zfs_sort_column_t *sortcol = cb->cb_sortcol;
2401         unsigned type;
2402         const char *typestr;
2403         size_t namelen;
2404         size_t typelen;
2405         size_t sizelen;
2406         int typeidx, nameidx, sizeidx;
2407         us_sort_info_t sortinfo = { sortcol, cb->cb_numname };
2408         boolean_t smbentity = B_FALSE;
2409
2410         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
2411                 nomem();
2412         node = safe_malloc(sizeof (us_node_t));
2413         uu_avl_node_init(node, &node->usn_avlnode, avl_pool);
2414         node->usn_nvl = props;
2415
2416         if (domain != NULL && domain[0] != '\0') {
2417                 /* SMB */
2418                 char sid[ZFS_MAXNAMELEN + 32];
2419                 uid_t id;
2420 #ifdef sun
2421                 int err;
2422                 int flag = IDMAP_REQ_FLG_USE_CACHE;
2423 #endif
2424
2425                 smbentity = B_TRUE;
2426
2427                 (void) snprintf(sid, sizeof (sid), "%s-%u", domain, rid);
2428
2429                 if (prop == ZFS_PROP_GROUPUSED || prop == ZFS_PROP_GROUPQUOTA) {
2430                         type = USTYPE_SMB_GRP;
2431 #ifdef sun
2432                         err = sid_to_id(sid, B_FALSE, &id);
2433 #endif
2434                 } else {
2435                         type = USTYPE_SMB_USR;
2436 #ifdef sun
2437                         err = sid_to_id(sid, B_TRUE, &id);
2438 #endif
2439                 }
2440
2441 #ifdef sun
2442                 if (err == 0) {
2443                         rid = id;
2444                         if (!cb->cb_sid2posix) {
2445                                 if (type == USTYPE_SMB_USR) {
2446                                         (void) idmap_getwinnamebyuid(rid, flag,
2447                                             &name, NULL);
2448                                 } else {
2449                                         (void) idmap_getwinnamebygid(rid, flag,
2450                                             &name, NULL);
2451                                 }
2452                                 if (name == NULL)
2453                                         name = sid;
2454                         }
2455                 }
2456 #endif
2457         }
2458
2459         if (cb->cb_sid2posix || domain == NULL || domain[0] == '\0') {
2460                 /* POSIX or -i */
2461                 if (prop == ZFS_PROP_GROUPUSED || prop == ZFS_PROP_GROUPQUOTA) {
2462                         type = USTYPE_PSX_GRP;
2463                         if (!cb->cb_numname) {
2464                                 struct group *g;
2465
2466                                 if ((g = getgrgid(rid)) != NULL)
2467                                         name = g->gr_name;
2468                         }
2469                 } else {
2470                         type = USTYPE_PSX_USR;
2471                         if (!cb->cb_numname) {
2472                                 struct passwd *p;
2473
2474                                 if ((p = getpwuid(rid)) != NULL)
2475                                         name = p->pw_name;
2476                         }
2477                 }
2478         }
2479
2480         /*
2481          * Make sure that the type/name combination is unique when doing
2482          * SID to POSIX ID translation (hence changing the type from SMB to
2483          * POSIX).
2484          */
2485         if (cb->cb_sid2posix &&
2486             nvlist_add_boolean_value(props, "smbentity", smbentity) != 0)
2487                 nomem();
2488
2489         /* Calculate/update width of TYPE field */
2490         typestr = us_type2str(type);
2491         typelen = strlen(gettext(typestr));
2492         typeidx = us_field_index("type");
2493         if (typelen > cb->cb_width[typeidx])
2494                 cb->cb_width[typeidx] = typelen;
2495         if (nvlist_add_uint32(props, "type", type) != 0)
2496                 nomem();
2497
2498         /* Calculate/update width of NAME field */
2499         if ((cb->cb_numname && cb->cb_sid2posix) || name == NULL) {
2500                 if (nvlist_add_uint64(props, "name", rid) != 0)
2501                         nomem();
2502                 namelen = snprintf(NULL, 0, "%u", rid);
2503         } else {
2504                 if (nvlist_add_string(props, "name", name) != 0)
2505                         nomem();
2506                 namelen = strlen(name);
2507         }
2508         nameidx = us_field_index("name");
2509         if (namelen > cb->cb_width[nameidx])
2510                 cb->cb_width[nameidx] = namelen;
2511
2512         /*
2513          * Check if this type/name combination is in the list and update it;
2514          * otherwise add new node to the list.
2515          */
2516         if ((n = uu_avl_find(avl, node, &sortinfo, &idx)) == NULL) {
2517                 uu_avl_insert(avl, node, idx);
2518         } else {
2519                 nvlist_free(props);
2520                 free(node);
2521                 node = n;
2522                 props = node->usn_nvl;
2523         }
2524
2525         /* Calculate/update width of USED/QUOTA fields */
2526         if (cb->cb_nicenum)
2527                 zfs_nicenum(space, sizebuf, sizeof (sizebuf));
2528         else
2529                 (void) snprintf(sizebuf, sizeof (sizebuf), "%llu", space);
2530         sizelen = strlen(sizebuf);
2531         if (prop == ZFS_PROP_USERUSED || prop == ZFS_PROP_GROUPUSED) {
2532                 propname = "used";
2533                 if (!nvlist_exists(props, "quota"))
2534                         (void) nvlist_add_uint64(props, "quota", 0);
2535         } else {
2536                 propname = "quota";
2537                 if (!nvlist_exists(props, "used"))
2538                         (void) nvlist_add_uint64(props, "used", 0);
2539         }
2540         sizeidx = us_field_index(propname);
2541         if (sizelen > cb->cb_width[sizeidx])
2542                 cb->cb_width[sizeidx] = sizelen;
2543
2544         if (nvlist_add_uint64(props, propname, space) != 0)
2545                 nomem();
2546
2547         return (0);
2548 }
2549
2550 static void
2551 print_us_node(boolean_t scripted, boolean_t parsable, int *fields, int types,
2552     size_t *width, us_node_t *node)
2553 {
2554         nvlist_t *nvl = node->usn_nvl;
2555         char valstr[ZFS_MAXNAMELEN];
2556         boolean_t first = B_TRUE;
2557         int cfield = 0;
2558         int field;
2559         uint32_t ustype;
2560
2561         /* Check type */
2562         (void) nvlist_lookup_uint32(nvl, "type", &ustype);
2563         if (!(ustype & types))
2564                 return;
2565
2566         while ((field = fields[cfield]) != USFIELD_LAST) {
2567                 nvpair_t *nvp = NULL;
2568                 data_type_t type;
2569                 uint32_t val32;
2570                 uint64_t val64;
2571                 char *strval = NULL;
2572
2573                 while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
2574                         if (strcmp(nvpair_name(nvp),
2575                             us_field_names[field]) == 0)
2576                                 break;
2577                 }
2578
2579                 type = nvpair_type(nvp);
2580                 switch (type) {
2581                 case DATA_TYPE_UINT32:
2582                         (void) nvpair_value_uint32(nvp, &val32);
2583                         break;
2584                 case DATA_TYPE_UINT64:
2585                         (void) nvpair_value_uint64(nvp, &val64);
2586                         break;
2587                 case DATA_TYPE_STRING:
2588                         (void) nvpair_value_string(nvp, &strval);
2589                         break;
2590                 default:
2591                         (void) fprintf(stderr, "invalid data type\n");
2592                 }
2593
2594                 switch (field) {
2595                 case USFIELD_TYPE:
2596                         strval = (char *)us_type2str(val32);
2597                         break;
2598                 case USFIELD_NAME:
2599                         if (type == DATA_TYPE_UINT64) {
2600                                 (void) sprintf(valstr, "%llu", val64);
2601                                 strval = valstr;
2602                         }
2603                         break;
2604                 case USFIELD_USED:
2605                 case USFIELD_QUOTA:
2606                         if (type == DATA_TYPE_UINT64) {
2607                                 if (parsable) {
2608                                         (void) sprintf(valstr, "%llu", val64);
2609                                 } else {
2610                                         zfs_nicenum(val64, valstr,
2611                                             sizeof (valstr));
2612                                 }
2613                                 if (field == USFIELD_QUOTA &&
2614                                     strcmp(valstr, "0") == 0)
2615                                         strval = "none";
2616                                 else
2617                                         strval = valstr;
2618                         }
2619                         break;
2620                 }
2621
2622                 if (!first) {
2623                         if (scripted)
2624                                 (void) printf("\t");
2625                         else
2626                                 (void) printf("  ");
2627                 }
2628                 if (scripted)
2629                         (void) printf("%s", strval);
2630                 else if (field == USFIELD_TYPE || field == USFIELD_NAME)
2631                         (void) printf("%-*s", width[field], strval);
2632                 else
2633                         (void) printf("%*s", width[field], strval);
2634
2635                 first = B_FALSE;
2636                 cfield++;
2637         }
2638
2639         (void) printf("\n");
2640 }
2641
2642 static void
2643 print_us(boolean_t scripted, boolean_t parsable, int *fields, int types,
2644     size_t *width, boolean_t rmnode, uu_avl_t *avl)
2645 {
2646         us_node_t *node;
2647         const char *col;
2648         int cfield = 0;
2649         int field;
2650
2651         if (!scripted) {
2652                 boolean_t first = B_TRUE;
2653
2654                 while ((field = fields[cfield]) != USFIELD_LAST) {
2655                         col = gettext(us_field_hdr[field]);
2656                         if (field == USFIELD_TYPE || field == USFIELD_NAME) {
2657                                 (void) printf(first ? "%-*s" : "  %-*s",
2658                                     width[field], col);
2659                         } else {
2660                                 (void) printf(first ? "%*s" : "  %*s",
2661                                     width[field], col);
2662                         }
2663                         first = B_FALSE;
2664                         cfield++;
2665                 }
2666                 (void) printf("\n");
2667         }
2668
2669         for (node = uu_avl_first(avl); node; node = uu_avl_next(avl, node)) {
2670                 print_us_node(scripted, parsable, fields, types, width, node);
2671                 if (rmnode)
2672                         nvlist_free(node->usn_nvl);
2673         }
2674 }
2675
2676 static int
2677 zfs_do_userspace(int argc, char **argv)
2678 {
2679         zfs_handle_t *zhp;
2680         zfs_userquota_prop_t p;
2681
2682         uu_avl_pool_t *avl_pool;
2683         uu_avl_t *avl_tree;
2684         uu_avl_walk_t *walk;
2685         char *delim;
2686         char deffields[] = "type,name,used,quota";
2687         char *ofield = NULL;
2688         char *tfield = NULL;
2689         int cfield = 0;
2690         int fields[256];
2691         int i;
2692         boolean_t scripted = B_FALSE;
2693         boolean_t prtnum = B_FALSE;
2694         boolean_t parsable = B_FALSE;
2695         boolean_t sid2posix = B_FALSE;
2696         int ret = 0;
2697         int c;
2698         zfs_sort_column_t *sortcol = NULL;
2699         int types = USTYPE_PSX_USR | USTYPE_SMB_USR;
2700         us_cbdata_t cb;
2701         us_node_t *node;
2702         us_node_t *rmnode;
2703         uu_list_pool_t *listpool;
2704         uu_list_t *list;
2705         uu_avl_index_t idx = 0;
2706         uu_list_index_t idx2 = 0;
2707
2708         if (argc < 2)
2709                 usage(B_FALSE);
2710
2711         if (strcmp(argv[0], "groupspace") == 0)
2712                 /* Toggle default group types */
2713                 types = USTYPE_PSX_GRP | USTYPE_SMB_GRP;
2714
2715         while ((c = getopt(argc, argv, "nHpo:s:S:t:i")) != -1) {
2716                 switch (c) {
2717                 case 'n':
2718                         prtnum = B_TRUE;
2719                         break;
2720                 case 'H':
2721                         scripted = B_TRUE;
2722                         break;
2723                 case 'p':
2724                         parsable = B_TRUE;
2725                         break;
2726                 case 'o':
2727                         ofield = optarg;
2728                         break;
2729                 case 's':
2730                 case 'S':
2731                         if (zfs_add_sort_column(&sortcol, optarg,
2732                             c == 's' ? B_FALSE : B_TRUE) != 0) {
2733                                 (void) fprintf(stderr,
2734                                     gettext("invalid field '%s'\n"), optarg);
2735                                 usage(B_FALSE);
2736                         }
2737                         break;
2738                 case 't':
2739                         tfield = optarg;
2740                         break;
2741                 case 'i':
2742                         sid2posix = B_TRUE;
2743                         break;
2744                 case ':':
2745                         (void) fprintf(stderr, gettext("missing argument for "
2746                             "'%c' option\n"), optopt);
2747                         usage(B_FALSE);
2748                         break;
2749                 case '?':
2750                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2751                             optopt);
2752                         usage(B_FALSE);
2753                 }
2754         }
2755
2756         argc -= optind;
2757         argv += optind;
2758
2759         if (argc < 1) {
2760                 (void) fprintf(stderr, gettext("missing dataset name\n"));
2761                 usage(B_FALSE);
2762         }
2763         if (argc > 1) {
2764                 (void) fprintf(stderr, gettext("too many arguments\n"));
2765                 usage(B_FALSE);
2766         }
2767
2768         /* Use default output fields if not specified using -o */
2769         if (ofield == NULL)
2770                 ofield = deffields;
2771         do {
2772                 if ((delim = strchr(ofield, ',')) != NULL)
2773                         *delim = '\0';
2774                 if ((fields[cfield++] = us_field_index(ofield)) == -1) {
2775                         (void) fprintf(stderr, gettext("invalid type '%s' "
2776                             "for -o option\n"), ofield);
2777                         return (-1);
2778                 }
2779                 if (delim != NULL)
2780                         ofield = delim + 1;
2781         } while (delim != NULL);
2782         fields[cfield] = USFIELD_LAST;
2783
2784         /* Override output types (-t option) */
2785         if (tfield != NULL) {
2786                 types = 0;
2787
2788                 do {
2789                         boolean_t found = B_FALSE;
2790
2791                         if ((delim = strchr(tfield, ',')) != NULL)
2792                                 *delim = '\0';
2793                         for (i = 0; i < sizeof (us_type_bits) / sizeof (int);
2794                             i++) {
2795                                 if (strcmp(tfield, us_type_names[i]) == 0) {
2796                                         found = B_TRUE;
2797                                         types |= us_type_bits[i];
2798                                         break;
2799                                 }
2800                         }
2801                         if (!found) {
2802                                 (void) fprintf(stderr, gettext("invalid type "
2803                                     "'%s' for -t option\n"), tfield);
2804                                 return (-1);
2805                         }
2806                         if (delim != NULL)
2807                                 tfield = delim + 1;
2808                 } while (delim != NULL);
2809         }
2810
2811         if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL)
2812                 return (1);
2813
2814         if ((avl_pool = uu_avl_pool_create("us_avl_pool", sizeof (us_node_t),
2815             offsetof(us_node_t, usn_avlnode), us_compare, UU_DEFAULT)) == NULL)
2816                 nomem();
2817         if ((avl_tree = uu_avl_create(avl_pool, NULL, UU_DEFAULT)) == NULL)
2818                 nomem();
2819
2820         /* Always add default sorting columns */
2821         (void) zfs_add_sort_column(&sortcol, "type", B_FALSE);
2822         (void) zfs_add_sort_column(&sortcol, "name", B_FALSE);
2823
2824         cb.cb_sortcol = sortcol;
2825         cb.cb_numname = prtnum;
2826         cb.cb_nicenum = !parsable;
2827         cb.cb_avl_pool = avl_pool;
2828         cb.cb_avl = avl_tree;
2829         cb.cb_sid2posix = sid2posix;
2830
2831         for (i = 0; i < USFIELD_LAST; i++)
2832                 cb.cb_width[i] = strlen(gettext(us_field_hdr[i]));
2833
2834         for (p = 0; p < ZFS_NUM_USERQUOTA_PROPS; p++) {
2835                 if (((p == ZFS_PROP_USERUSED || p == ZFS_PROP_USERQUOTA) &&
2836                     !(types & (USTYPE_PSX_USR | USTYPE_SMB_USR))) ||
2837                     ((p == ZFS_PROP_GROUPUSED || p == ZFS_PROP_GROUPQUOTA) &&
2838                     !(types & (USTYPE_PSX_GRP | USTYPE_SMB_GRP))))
2839                         continue;
2840                 cb.cb_prop = p;
2841                 if ((ret = zfs_userspace(zhp, p, userspace_cb, &cb)) != 0)
2842                         return (ret);
2843         }
2844
2845         /* Sort the list */
2846         if ((node = uu_avl_first(avl_tree)) == NULL)
2847                 return (0);
2848
2849         us_populated = B_TRUE;
2850
2851         listpool = uu_list_pool_create("tmplist", sizeof (us_node_t),
2852             offsetof(us_node_t, usn_listnode), NULL, UU_DEFAULT);
2853         list = uu_list_create(listpool, NULL, UU_DEFAULT);
2854         uu_list_node_init(node, &node->usn_listnode, listpool);
2855
2856         while (node != NULL) {
2857                 rmnode = node;
2858                 node = uu_avl_next(avl_tree, node);
2859                 uu_avl_remove(avl_tree, rmnode);
2860                 if (uu_list_find(list, rmnode, NULL, &idx2) == NULL)
2861                         uu_list_insert(list, rmnode, idx2);
2862         }
2863
2864         for (node = uu_list_first(list); node != NULL;
2865             node = uu_list_next(list, node)) {
2866                 us_sort_info_t sortinfo = { sortcol, cb.cb_numname };
2867
2868                 if (uu_avl_find(avl_tree, node, &sortinfo, &idx) == NULL)
2869                         uu_avl_insert(avl_tree, node, idx);
2870         }
2871
2872         uu_list_destroy(list);
2873         uu_list_pool_destroy(listpool);
2874
2875         /* Print and free node nvlist memory */
2876         print_us(scripted, parsable, fields, types, cb.cb_width, B_TRUE,
2877             cb.cb_avl);
2878
2879         zfs_free_sort_columns(sortcol);
2880
2881         /* Clean up the AVL tree */
2882         if ((walk = uu_avl_walk_start(cb.cb_avl, UU_WALK_ROBUST)) == NULL)
2883                 nomem();
2884
2885         while ((node = uu_avl_walk_next(walk)) != NULL) {
2886                 uu_avl_remove(cb.cb_avl, node);
2887                 free(node);
2888         }
2889
2890         uu_avl_walk_end(walk);
2891         uu_avl_destroy(avl_tree);
2892         uu_avl_pool_destroy(avl_pool);
2893
2894         return (ret);
2895 }
2896
2897 /*
2898  * list [-Hp][-r|-d max] [-o property[,...]] [-s property] ... [-S property] ...
2899  *      [-t type[,...]] [filesystem|volume|snapshot] ...
2900  *
2901  *      -H      Scripted mode; elide headers and separate columns by tabs.
2902  *      -p      Display values in parsable (literal) format.
2903  *      -r      Recurse over all children.
2904  *      -d      Limit recursion by depth.
2905  *      -o      Control which fields to display.
2906  *      -s      Specify sort columns, descending order.
2907  *      -S      Specify sort columns, ascending order.
2908  *      -t      Control which object types to display.
2909  *
2910  * When given no arguments, list all filesystems in the system.
2911  * Otherwise, list the specified datasets, optionally recursing down them if
2912  * '-r' is specified.
2913  */
2914 typedef struct list_cbdata {
2915         boolean_t       cb_first;
2916         boolean_t       cb_literal;
2917         boolean_t       cb_scripted;
2918         zprop_list_t    *cb_proplist;
2919 } list_cbdata_t;
2920
2921 /*
2922  * Given a list of columns to display, output appropriate headers for each one.
2923  */
2924 static void
2925 print_header(list_cbdata_t *cb)
2926 {
2927         zprop_list_t *pl = cb->cb_proplist;
2928         char headerbuf[ZFS_MAXPROPLEN];
2929         const char *header;
2930         int i;
2931         boolean_t first = B_TRUE;
2932         boolean_t right_justify;
2933
2934         for (; pl != NULL; pl = pl->pl_next) {
2935                 if (!first) {
2936                         (void) printf("  ");
2937                 } else {
2938                         first = B_FALSE;
2939                 }
2940
2941                 right_justify = B_FALSE;
2942                 if (pl->pl_prop != ZPROP_INVAL) {
2943                         header = zfs_prop_column_name(pl->pl_prop);
2944                         right_justify = zfs_prop_align_right(pl->pl_prop);
2945                 } else {
2946                         for (i = 0; pl->pl_user_prop[i] != '\0'; i++)
2947                                 headerbuf[i] = toupper(pl->pl_user_prop[i]);
2948                         headerbuf[i] = '\0';
2949                         header = headerbuf;
2950                 }
2951
2952                 if (pl->pl_next == NULL && !right_justify)
2953                         (void) printf("%s", header);
2954                 else if (right_justify)
2955                         (void) printf("%*s", pl->pl_width, header);
2956                 else
2957                         (void) printf("%-*s", pl->pl_width, header);
2958         }
2959
2960         (void) printf("\n");
2961 }
2962
2963 /*
2964  * Given a dataset and a list of fields, print out all the properties according
2965  * to the described layout.
2966  */
2967 static void
2968 print_dataset(zfs_handle_t *zhp, list_cbdata_t *cb)
2969 {
2970         zprop_list_t *pl = cb->cb_proplist;
2971         boolean_t first = B_TRUE;
2972         char property[ZFS_MAXPROPLEN];
2973         nvlist_t *userprops = zfs_get_user_props(zhp);
2974         nvlist_t *propval;
2975         char *propstr;
2976         boolean_t right_justify;
2977
2978         for (; pl != NULL; pl = pl->pl_next) {
2979                 if (!first) {
2980                         if (cb->cb_scripted)
2981                                 (void) printf("\t");
2982                         else
2983                                 (void) printf("  ");
2984                 } else {
2985                         first = B_FALSE;
2986                 }
2987
2988                 if (pl->pl_prop == ZFS_PROP_NAME) {
2989                         (void) strlcpy(property, zfs_get_name(zhp),
2990                             sizeof(property));
2991                         propstr = property;
2992                         right_justify = zfs_prop_align_right(pl->pl_prop);
2993                 } else if (pl->pl_prop != ZPROP_INVAL) {
2994                         if (zfs_prop_get(zhp, pl->pl_prop, property,
2995                             sizeof (property), NULL, NULL, 0,
2996                             cb->cb_literal) != 0)
2997                                 propstr = "-";
2998                         else
2999                                 propstr = property;
3000                         right_justify = zfs_prop_align_right(pl->pl_prop);
3001                 } else if (zfs_prop_userquota(pl->pl_user_prop)) {
3002                         if (zfs_prop_get_userquota(zhp, pl->pl_user_prop,
3003                             property, sizeof (property), cb->cb_literal) != 0)
3004                                 propstr = "-";
3005                         else
3006                                 propstr = property;
3007                         right_justify = B_TRUE;
3008                 } else if (zfs_prop_written(pl->pl_user_prop)) {
3009                         if (zfs_prop_get_written(zhp, pl->pl_user_prop,
3010                             property, sizeof (property), cb->cb_literal) != 0)
3011                                 propstr = "-";
3012                         else
3013                                 propstr = property;
3014                         right_justify = B_TRUE;
3015                 } else {
3016                         if (nvlist_lookup_nvlist(userprops,
3017                             pl->pl_user_prop, &propval) != 0)
3018                                 propstr = "-";
3019                         else
3020                                 verify(nvlist_lookup_string(propval,
3021                                     ZPROP_VALUE, &propstr) == 0);
3022                         right_justify = B_FALSE;
3023                 }
3024
3025                 /*
3026                  * If this is being called in scripted mode, or if this is the
3027                  * last column and it is left-justified, don't include a width
3028                  * format specifier.
3029                  */
3030                 if (cb->cb_scripted || (pl->pl_next == NULL && !right_justify))
3031                         (void) printf("%s", propstr);
3032                 else if (right_justify)
3033                         (void) printf("%*s", pl->pl_width, propstr);
3034                 else
3035                         (void) printf("%-*s", pl->pl_width, propstr);
3036         }
3037
3038         (void) printf("\n");
3039 }
3040
3041 /*
3042  * Generic callback function to list a dataset or snapshot.
3043  */
3044 static int
3045 list_callback(zfs_handle_t *zhp, void *data)
3046 {
3047         list_cbdata_t *cbp = data;
3048
3049         if (cbp->cb_first) {
3050                 if (!cbp->cb_scripted)
3051                         print_header(cbp);
3052                 cbp->cb_first = B_FALSE;
3053         }
3054
3055         print_dataset(zhp, cbp);
3056
3057         return (0);
3058 }
3059
3060 static int
3061 zfs_do_list(int argc, char **argv)
3062 {
3063         int c;
3064         static char default_fields[] =
3065             "name,used,available,referenced,mountpoint";
3066         int types = ZFS_TYPE_DATASET;
3067         boolean_t types_specified = B_FALSE;
3068         char *fields = NULL;
3069         list_cbdata_t cb = { 0 };
3070         char *value;
3071         int limit = 0;
3072         int ret = 0;
3073         zfs_sort_column_t *sortcol = NULL;
3074         int flags = ZFS_ITER_PROP_LISTSNAPS | ZFS_ITER_ARGS_CAN_BE_PATHS;
3075
3076         /* check options */
3077         while ((c = getopt(argc, argv, "HS:d:o:prs:t:")) != -1) {
3078                 switch (c) {
3079                 case 'o':
3080                         fields = optarg;
3081                         break;
3082                 case 'p':
3083                         cb.cb_literal = B_TRUE;
3084                         flags |= ZFS_ITER_LITERAL_PROPS;
3085                         break;
3086                 case 'd':
3087                         limit = parse_depth(optarg, &flags);
3088                         break;
3089                 case 'r':
3090                         flags |= ZFS_ITER_RECURSE;
3091                         break;
3092                 case 'H':
3093                         cb.cb_scripted = B_TRUE;
3094                         break;
3095                 case 's':
3096                         if (zfs_add_sort_column(&sortcol, optarg,
3097                             B_FALSE) != 0) {
3098                                 (void) fprintf(stderr,
3099                                     gettext("invalid property '%s'\n"), optarg);
3100                                 usage(B_FALSE);
3101                         }
3102                         break;
3103                 case 'S':
3104                         if (zfs_add_sort_column(&sortcol, optarg,
3105                             B_TRUE) != 0) {
3106                                 (void) fprintf(stderr,
3107                                     gettext("invalid property '%s'\n"), optarg);
3108                                 usage(B_FALSE);
3109                         }
3110                         break;
3111                 case 't':
3112                         types = 0;
3113                         types_specified = B_TRUE;
3114                         flags &= ~ZFS_ITER_PROP_LISTSNAPS;
3115                         while (*optarg != '\0') {
3116                                 static char *type_subopts[] = { "filesystem",
3117                                     "volume", "snapshot", "snap", "bookmark",
3118                                     "all", NULL };
3119
3120                                 switch (getsubopt(&optarg, type_subopts,
3121                                     &value)) {
3122                                 case 0:
3123                                         types |= ZFS_TYPE_FILESYSTEM;
3124                                         break;
3125                                 case 1:
3126                                         types |= ZFS_TYPE_VOLUME;
3127                                         break;
3128                                 case 2:
3129                                 case 3:
3130                                         types |= ZFS_TYPE_SNAPSHOT;
3131                                         break;
3132                                 case 4:
3133                                         types |= ZFS_TYPE_BOOKMARK;
3134                                         break;
3135                                 case 5:
3136                                         types = ZFS_TYPE_DATASET |
3137                                             ZFS_TYPE_BOOKMARK;
3138                                         break;
3139                                 default:
3140                                         (void) fprintf(stderr,
3141                                             gettext("invalid type '%s'\n"),
3142                                             value);
3143                                         usage(B_FALSE);
3144                                 }
3145                         }
3146                         break;
3147                 case ':':
3148                         (void) fprintf(stderr, gettext("missing argument for "
3149                             "'%c' option\n"), optopt);
3150                         usage(B_FALSE);
3151                         break;
3152                 case '?':
3153                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3154                             optopt);
3155                         usage(B_FALSE);
3156                 }
3157         }
3158
3159         argc -= optind;
3160         argv += optind;
3161
3162         if (fields == NULL)
3163                 fields = default_fields;
3164
3165         /*
3166          * If we are only going to list snapshot names and sort by name,
3167          * then we can use faster version.
3168          */
3169         if (strcmp(fields, "name") == 0 && zfs_sort_only_by_name(sortcol))
3170                 flags |= ZFS_ITER_SIMPLE;
3171
3172         /*
3173          * If "-o space" and no types were specified, don't display snapshots.
3174          */
3175         if (strcmp(fields, "space") == 0 && types_specified == B_FALSE)
3176                 types &= ~ZFS_TYPE_SNAPSHOT;
3177
3178         /*
3179          * If the user specifies '-o all', the zprop_get_list() doesn't
3180          * normally include the name of the dataset.  For 'zfs list', we always
3181          * want this property to be first.
3182          */
3183         if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
3184             != 0)
3185                 usage(B_FALSE);
3186
3187         cb.cb_first = B_TRUE;
3188
3189         ret = zfs_for_each(argc, argv, flags, types, sortcol, &cb.cb_proplist,
3190             limit, list_callback, &cb);
3191
3192         zprop_free_list(cb.cb_proplist);
3193         zfs_free_sort_columns(sortcol);
3194
3195         if (ret == 0 && cb.cb_first && !cb.cb_scripted)
3196                 (void) printf(gettext("no datasets available\n"));
3197
3198         return (ret);
3199 }
3200
3201 /*
3202  * zfs rename [-f] <fs | snap | vol> <fs | snap | vol>
3203  * zfs rename [-f] -p <fs | vol> <fs | vol>
3204  * zfs rename -r <snap> <snap>
3205  * zfs rename -u [-p] <fs> <fs>
3206  *
3207  * Renames the given dataset to another of the same type.
3208  *
3209  * The '-p' flag creates all the non-existing ancestors of the target first.
3210  */
3211 /* ARGSUSED */
3212 static int
3213 zfs_do_rename(int argc, char **argv)
3214 {
3215         zfs_handle_t *zhp;
3216         renameflags_t flags = { 0 };
3217         int c;
3218         int ret = 0;
3219         int types;
3220         boolean_t parents = B_FALSE;
3221         char *snapshot = NULL;
3222
3223         /* check options */
3224         while ((c = getopt(argc, argv, "fpru")) != -1) {
3225                 switch (c) {
3226                 case 'p':
3227                         parents = B_TRUE;
3228                         break;
3229                 case 'r':
3230                         flags.recurse = B_TRUE;
3231                         break;
3232                 case 'u':
3233                         flags.nounmount = B_TRUE;
3234                         break;
3235                 case 'f':
3236                         flags.forceunmount = B_TRUE;
3237                         break;
3238                 case '?':
3239                 default:
3240                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3241                             optopt);
3242                         usage(B_FALSE);
3243                 }
3244         }
3245
3246         argc -= optind;
3247         argv += optind;
3248
3249         /* check number of arguments */
3250         if (argc < 1) {
3251                 (void) fprintf(stderr, gettext("missing source dataset "
3252                     "argument\n"));
3253                 usage(B_FALSE);
3254         }
3255         if (argc < 2) {
3256                 (void) fprintf(stderr, gettext("missing target dataset "
3257                     "argument\n"));
3258                 usage(B_FALSE);
3259         }
3260         if (argc > 2) {
3261                 (void) fprintf(stderr, gettext("too many arguments\n"));
3262                 usage(B_FALSE);
3263         }
3264
3265         if (flags.recurse && parents) {
3266                 (void) fprintf(stderr, gettext("-p and -r options are mutually "
3267                     "exclusive\n"));
3268                 usage(B_FALSE);
3269         }
3270
3271         if (flags.recurse && strchr(argv[0], '@') == 0) {
3272                 (void) fprintf(stderr, gettext("source dataset for recursive "
3273                     "rename must be a snapshot\n"));
3274                 usage(B_FALSE);
3275         }
3276
3277         if (flags.nounmount && parents) {
3278                 (void) fprintf(stderr, gettext("-u and -p options are mutually "
3279                     "exclusive\n"));
3280                 usage(B_FALSE);
3281         }
3282
3283         if (flags.nounmount)
3284                 types = ZFS_TYPE_FILESYSTEM;
3285         else if (parents)
3286                 types = ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME;
3287         else
3288                 types = ZFS_TYPE_DATASET;
3289
3290         if (flags.recurse) {
3291                 /*
3292                  * When we do recursive rename we are fine when the given
3293                  * snapshot for the given dataset doesn't exist - it can
3294                  * still exists below.
3295                  */
3296
3297                 snapshot = strchr(argv[0], '@');
3298                 assert(snapshot != NULL);
3299                 *snapshot = '\0';
3300                 snapshot++;
3301         }
3302
3303         if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL)
3304                 return (1);
3305
3306         /* If we were asked and the name looks good, try to create ancestors. */
3307         if (parents && zfs_name_valid(argv[1], zfs_get_type(zhp)) &&
3308             zfs_create_ancestors(g_zfs, argv[1]) != 0) {
3309                 zfs_close(zhp);
3310                 return (1);
3311         }
3312
3313         ret = (zfs_rename(zhp, snapshot, argv[1], flags) != 0);
3314
3315         zfs_close(zhp);
3316         return (ret);
3317 }
3318
3319 /*
3320  * zfs promote <fs>
3321  *
3322  * Promotes the given clone fs to be the parent
3323  */
3324 /* ARGSUSED */
3325 static int
3326 zfs_do_promote(int argc, char **argv)
3327 {
3328         zfs_handle_t *zhp;
3329         int ret = 0;
3330
3331         /* check options */
3332         if (argc > 1 && argv[1][0] == '-') {
3333                 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3334                     argv[1][1]);
3335                 usage(B_FALSE);
3336         }
3337
3338         /* check number of arguments */
3339         if (argc < 2) {
3340                 (void) fprintf(stderr, gettext("missing clone filesystem"
3341                     " argument\n"));
3342                 usage(B_FALSE);
3343         }
3344         if (argc > 2) {
3345                 (void) fprintf(stderr, gettext("too many arguments\n"));
3346                 usage(B_FALSE);
3347         }
3348
3349         zhp = zfs_open(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3350         if (zhp == NULL)
3351                 return (1);
3352
3353         ret = (zfs_promote(zhp) != 0);
3354
3355
3356         zfs_close(zhp);
3357         return (ret);
3358 }
3359
3360 /*
3361  * zfs rollback [-rRf] <snapshot>
3362  *
3363  *      -r      Delete any intervening snapshots before doing rollback
3364  *      -R      Delete any snapshots and their clones
3365  *      -f      ignored for backwards compatability
3366  *
3367  * Given a filesystem, rollback to a specific snapshot, discarding any changes
3368  * since then and making it the active dataset.  If more recent snapshots exist,
3369  * the command will complain unless the '-r' flag is given.
3370  */
3371 typedef struct rollback_cbdata {
3372         uint64_t        cb_create;
3373         boolean_t       cb_first;
3374         int             cb_doclones;
3375         char            *cb_target;
3376         int             cb_error;
3377         boolean_t       cb_recurse;
3378 } rollback_cbdata_t;
3379
3380 static int
3381 rollback_check_dependent(zfs_handle_t *zhp, void *data)
3382 {
3383         rollback_cbdata_t *cbp = data;
3384
3385         if (cbp->cb_first && cbp->cb_recurse) {
3386                 (void) fprintf(stderr, gettext("cannot rollback to "
3387                     "'%s': clones of previous snapshots exist\n"),
3388                     cbp->cb_target);
3389                 (void) fprintf(stderr, gettext("use '-R' to "
3390                     "force deletion of the following clones and "
3391                     "dependents:\n"));
3392                 cbp->cb_first = 0;
3393                 cbp->cb_error = 1;
3394         }
3395
3396         (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
3397
3398         zfs_close(zhp);
3399         return (0);
3400 }
3401
3402 /*
3403  * Report any snapshots more recent than the one specified.  Used when '-r' is
3404  * not specified.  We reuse this same callback for the snapshot dependents - if
3405  * 'cb_dependent' is set, then this is a dependent and we should report it
3406  * without checking the transaction group.
3407  */
3408 static int
3409 rollback_check(zfs_handle_t *zhp, void *data)
3410 {
3411         rollback_cbdata_t *cbp = data;
3412
3413         if (cbp->cb_doclones) {
3414                 zfs_close(zhp);
3415                 return (0);
3416         }
3417
3418         if (zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > cbp->cb_create) {
3419                 if (cbp->cb_first && !cbp->cb_recurse) {
3420                         (void) fprintf(stderr, gettext("cannot "
3421                             "rollback to '%s': more recent snapshots "
3422                             "or bookmarks exist\n"),
3423                             cbp->cb_target);
3424                         (void) fprintf(stderr, gettext("use '-r' to "
3425                             "force deletion of the following "
3426                             "snapshots and bookmarks:\n"));
3427                         cbp->cb_first = 0;
3428                         cbp->cb_error = 1;
3429                 }
3430
3431                 if (cbp->cb_recurse) {
3432                         if (zfs_iter_dependents(zhp, B_TRUE,
3433                             rollback_check_dependent, cbp) != 0) {
3434                                 zfs_close(zhp);
3435                                 return (-1);
3436                         }
3437                 } else {
3438                         (void) fprintf(stderr, "%s\n",
3439                             zfs_get_name(zhp));
3440                 }
3441         }
3442         zfs_close(zhp);
3443         return (0);
3444 }
3445
3446 static int
3447 zfs_do_rollback(int argc, char **argv)
3448 {
3449         int ret = 0;
3450         int c;
3451         boolean_t force = B_FALSE;
3452         rollback_cbdata_t cb = { 0 };
3453         zfs_handle_t *zhp, *snap;
3454         char parentname[ZFS_MAXNAMELEN];
3455         char *delim;
3456
3457         /* check options */
3458         while ((c = getopt(argc, argv, "rRf")) != -1) {
3459                 switch (c) {
3460                 case 'r':
3461                         cb.cb_recurse = 1;
3462                         break;
3463                 case 'R':
3464                         cb.cb_recurse = 1;
3465                         cb.cb_doclones = 1;
3466                         break;
3467                 case 'f':
3468                         force = B_TRUE;
3469                         break;
3470                 case '?':
3471                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3472                             optopt);
3473                         usage(B_FALSE);
3474                 }
3475         }
3476
3477         argc -= optind;
3478         argv += optind;
3479
3480         /* check number of arguments */
3481         if (argc < 1) {
3482                 (void) fprintf(stderr, gettext("missing dataset argument\n"));
3483                 usage(B_FALSE);
3484         }
3485         if (argc > 1) {
3486                 (void) fprintf(stderr, gettext("too many arguments\n"));
3487                 usage(B_FALSE);
3488         }
3489
3490         /* open the snapshot */
3491         if ((snap = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
3492                 return (1);
3493
3494         /* open the parent dataset */
3495         (void) strlcpy(parentname, argv[0], sizeof (parentname));
3496         verify((delim = strrchr(parentname, '@')) != NULL);
3497         *delim = '\0';
3498         if ((zhp = zfs_open(g_zfs, parentname, ZFS_TYPE_DATASET)) == NULL) {
3499                 zfs_close(snap);
3500                 return (1);
3501         }
3502
3503         /*
3504          * Check for more recent snapshots and/or clones based on the presence
3505          * of '-r' and '-R'.
3506          */
3507         cb.cb_target = argv[0];
3508         cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG);
3509         cb.cb_first = B_TRUE;
3510         cb.cb_error = 0;
3511         if ((ret = zfs_iter_snapshots(zhp, B_FALSE, rollback_check, &cb)) != 0)
3512                 goto out;
3513         if ((ret = zfs_iter_bookmarks(zhp, rollback_check, &cb)) != 0)
3514                 goto out;
3515
3516         if ((ret = cb.cb_error) != 0)
3517                 goto out;
3518
3519         /*
3520          * Rollback parent to the given snapshot.
3521          */
3522         ret = zfs_rollback(zhp, snap, force);
3523
3524 out:
3525         zfs_close(snap);
3526         zfs_close(zhp);
3527
3528         if (ret == 0)
3529                 return (0);
3530         else
3531                 return (1);
3532 }
3533
3534 /*
3535  * zfs set property=value { fs | snap | vol } ...
3536  *
3537  * Sets the given property for all datasets specified on the command line.
3538  */
3539 typedef struct set_cbdata {
3540         char            *cb_propname;
3541         char            *cb_value;
3542 } set_cbdata_t;
3543
3544 static int
3545 set_callback(zfs_handle_t *zhp, void *data)
3546 {
3547         set_cbdata_t *cbp = data;
3548
3549         if (zfs_prop_set(zhp, cbp->cb_propname, cbp->cb_value) != 0) {
3550                 switch (libzfs_errno(g_zfs)) {
3551                 case EZFS_MOUNTFAILED:
3552                         (void) fprintf(stderr, gettext("property may be set "
3553                             "but unable to remount filesystem\n"));
3554                         break;
3555                 case EZFS_SHARENFSFAILED:
3556                         (void) fprintf(stderr, gettext("property may be set "
3557                             "but unable to reshare filesystem\n"));
3558                         break;
3559                 }
3560                 return (1);
3561         }
3562         return (0);
3563 }
3564
3565 static int
3566 zfs_do_set(int argc, char **argv)
3567 {
3568         set_cbdata_t cb;
3569         int ret = 0;
3570
3571         /* check for options */
3572         if (argc > 1 && argv[1][0] == '-') {
3573                 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3574                     argv[1][1]);
3575                 usage(B_FALSE);
3576         }
3577
3578         /* check number of arguments */
3579         if (argc < 2) {
3580                 (void) fprintf(stderr, gettext("missing property=value "
3581                     "argument\n"));
3582                 usage(B_FALSE);
3583         }
3584         if (argc < 3) {
3585                 (void) fprintf(stderr, gettext("missing dataset name\n"));
3586                 usage(B_FALSE);
3587         }
3588
3589         /* validate property=value argument */
3590         cb.cb_propname = argv[1];
3591         if (((cb.cb_value = strchr(cb.cb_propname, '=')) == NULL) ||
3592             (cb.cb_value[1] == '\0')) {
3593                 (void) fprintf(stderr, gettext("missing value in "
3594                     "property=value argument\n"));
3595                 usage(B_FALSE);
3596         }
3597
3598         *cb.cb_value = '\0';
3599         cb.cb_value++;
3600
3601         if (*cb.cb_propname == '\0') {
3602                 (void) fprintf(stderr,
3603                     gettext("missing property in property=value argument\n"));
3604                 usage(B_FALSE);
3605         }
3606
3607         ret = zfs_for_each(argc - 2, argv + 2, 0,
3608             ZFS_TYPE_DATASET, NULL, NULL, 0, set_callback, &cb);
3609
3610         return (ret);
3611 }
3612
3613 typedef struct snap_cbdata {
3614         nvlist_t *sd_nvl;
3615         boolean_t sd_recursive;
3616         const char *sd_snapname;
3617 } snap_cbdata_t;
3618
3619 static int
3620 zfs_snapshot_cb(zfs_handle_t *zhp, void *arg)
3621 {
3622         snap_cbdata_t *sd = arg;
3623         char *name;
3624         int rv = 0;
3625         int error;
3626
3627         if (sd->sd_recursive &&
3628             zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) != 0) {
3629                 zfs_close(zhp);
3630                 return (0);
3631         }
3632
3633         error = asprintf(&name, "%s@%s", zfs_get_name(zhp), sd->sd_snapname);
3634         if (error == -1)
3635                 nomem();
3636         fnvlist_add_boolean(sd->sd_nvl, name);
3637         free(name);
3638
3639         if (sd->sd_recursive)
3640                 rv = zfs_iter_filesystems(zhp, zfs_snapshot_cb, sd);
3641         zfs_close(zhp);
3642         return (rv);
3643 }
3644
3645 /*
3646  * zfs snapshot [-r] [-o prop=value] ... <fs@snap>
3647  *
3648  * Creates a snapshot with the given name.  While functionally equivalent to
3649  * 'zfs create', it is a separate command to differentiate intent.
3650  */
3651 static int
3652 zfs_do_snapshot(int argc, char **argv)
3653 {
3654         int ret = 0;
3655         int c;
3656         nvlist_t *props;
3657         snap_cbdata_t sd = { 0 };
3658         boolean_t multiple_snaps = B_FALSE;
3659
3660         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
3661                 nomem();
3662         if (nvlist_alloc(&sd.sd_nvl, NV_UNIQUE_NAME, 0) != 0)
3663                 nomem();
3664
3665         /* check options */
3666         while ((c = getopt(argc, argv, "ro:")) != -1) {
3667                 switch (c) {
3668                 case 'o':
3669                         if (parseprop(props, optarg) != 0)
3670                                 return (1);
3671                         break;
3672                 case 'r':
3673                         sd.sd_recursive = B_TRUE;
3674                         multiple_snaps = B_TRUE;
3675                         break;
3676                 case '?':
3677                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3678                             optopt);
3679                         goto usage;
3680                 }
3681         }
3682
3683         argc -= optind;
3684         argv += optind;
3685
3686         /* check number of arguments */
3687         if (argc < 1) {
3688                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
3689                 goto usage;
3690         }
3691
3692         if (argc > 1)
3693                 multiple_snaps = B_TRUE;
3694         for (; argc > 0; argc--, argv++) {
3695                 char *atp;
3696                 zfs_handle_t *zhp;
3697
3698                 atp = strchr(argv[0], '@');
3699                 if (atp == NULL)
3700                         goto usage;
3701                 *atp = '\0';
3702                 sd.sd_snapname = atp + 1;
3703                 zhp = zfs_open(g_zfs, argv[0],
3704                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3705                 if (zhp == NULL)
3706                         goto usage;
3707                 if (zfs_snapshot_cb(zhp, &sd) != 0)
3708                         goto usage;
3709         }
3710
3711         ret = zfs_snapshot_nvl(g_zfs, sd.sd_nvl, props);
3712         nvlist_free(sd.sd_nvl);
3713         nvlist_free(props);
3714         if (ret != 0 && multiple_snaps)
3715                 (void) fprintf(stderr, gettext("no snapshots were created\n"));
3716         return (ret != 0);
3717
3718 usage:
3719         nvlist_free(sd.sd_nvl);
3720         nvlist_free(props);
3721         usage(B_FALSE);
3722         return (-1);
3723 }
3724
3725 /*
3726  * Send a backup stream to stdout.
3727  */
3728 static int
3729 zfs_do_send(int argc, char **argv)
3730 {
3731         char *fromname = NULL;
3732         char *toname = NULL;
3733         char *resume_token = NULL;
3734         char *cp;
3735         zfs_handle_t *zhp;
3736         sendflags_t flags = { 0 };
3737         int c, err;
3738         nvlist_t *dbgnv = NULL;
3739         boolean_t extraverbose = B_FALSE;
3740
3741         /* check options */
3742         while ((c = getopt(argc, argv, ":i:I:RDpvnPLet:")) != -1) {
3743                 switch (c) {
3744                 case 'i':
3745                         if (fromname)
3746                                 usage(B_FALSE);
3747                         fromname = optarg;
3748                         break;
3749                 case 'I':
3750                         if (fromname)
3751                                 usage(B_FALSE);
3752                         fromname = optarg;
3753                         flags.doall = B_TRUE;
3754                         break;
3755                 case 'R':
3756                         flags.replicate = B_TRUE;
3757                         break;
3758                 case 'p':
3759                         flags.props = B_TRUE;
3760                         break;
3761                 case 'P':
3762                         flags.parsable = B_TRUE;
3763                         flags.verbose = B_TRUE;
3764                         break;
3765                 case 'v':
3766                         if (flags.verbose)
3767                                 extraverbose = B_TRUE;
3768                         flags.verbose = B_TRUE;
3769                         flags.progress = B_TRUE;
3770                         break;
3771                 case 'D':
3772                         flags.dedup = B_TRUE;
3773                         break;
3774                 case 'n':
3775                         flags.dryrun = B_TRUE;
3776                         break;
3777                 case 'L':
3778                         flags.largeblock = B_TRUE;
3779                         break;
3780                 case 'e':
3781                         flags.embed_data = B_TRUE;
3782                         break;
3783                 case 't':
3784                         resume_token = optarg;
3785                         break;
3786                 case ':':
3787                         (void) fprintf(stderr, gettext("missing argument for "
3788                             "'%c' option\n"), optopt);
3789                         usage(B_FALSE);
3790                         break;
3791                 case '?':
3792                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3793                             optopt);
3794                         usage(B_FALSE);
3795                 }
3796         }
3797
3798         argc -= optind;
3799         argv += optind;
3800
3801         if (resume_token != NULL) {
3802                 if (fromname != NULL || flags.replicate || flags.props ||
3803                     flags.dedup) {
3804                         (void) fprintf(stderr,
3805                             gettext("invalid flags combined with -t\n"));
3806                         usage(B_FALSE);
3807                 }
3808                 if (argc != 0) {
3809                         (void) fprintf(stderr, gettext("no additional "
3810                             "arguments are permitted with -t\n"));
3811                         usage(B_FALSE);
3812                 }
3813         } else {
3814                 if (argc < 1) {
3815                         (void) fprintf(stderr,
3816                             gettext("missing snapshot argument\n"));
3817                         usage(B_FALSE);
3818                 }
3819                 if (argc > 1) {
3820                         (void) fprintf(stderr, gettext("too many arguments\n"));
3821                         usage(B_FALSE);
3822                 }
3823         }
3824
3825         if (!flags.dryrun && isatty(STDOUT_FILENO)) {
3826                 (void) fprintf(stderr,
3827                     gettext("Error: Stream can not be written to a terminal.\n"
3828                     "You must redirect standard output.\n"));
3829                 return (1);
3830         }
3831
3832         if (resume_token != NULL) {
3833                 return (zfs_send_resume(g_zfs, &flags, STDOUT_FILENO,
3834                     resume_token));
3835         }
3836
3837         /*
3838          * Special case sending a filesystem, or from a bookmark.
3839          */
3840         if (strchr(argv[0], '@') == NULL ||
3841             (fromname && strchr(fromname, '#') != NULL)) {
3842                 char frombuf[ZFS_MAXNAMELEN];
3843                 enum lzc_send_flags lzc_flags = 0;
3844
3845                 if (flags.replicate || flags.doall || flags.props ||
3846                     flags.dedup || flags.dryrun || flags.verbose ||
3847                     flags.progress) {
3848                         (void) fprintf(stderr,
3849                             gettext("Error: "
3850                             "Unsupported flag with filesystem or bookmark.\n"));
3851                         return (1);
3852                 }
3853
3854                 zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET);
3855                 if (zhp == NULL)
3856                         return (1);
3857
3858                 if (flags.largeblock)
3859                         lzc_flags |= LZC_SEND_FLAG_LARGE_BLOCK;
3860                 if (flags.embed_data)
3861                         lzc_flags |= LZC_SEND_FLAG_EMBED_DATA;
3862
3863                 if (fromname != NULL &&
3864                     (fromname[0] == '#' || fromname[0] == '@')) {
3865                         /*
3866                          * Incremental source name begins with # or @.
3867                          * Default to same fs as target.
3868                          */
3869                         (void) strncpy(frombuf, argv[0], sizeof (frombuf));
3870                         cp = strchr(frombuf, '@');
3871                         if (cp != NULL)
3872                                 *cp = '\0';
3873                         (void) strlcat(frombuf, fromname, sizeof (frombuf));
3874                         fromname = frombuf;
3875                 }
3876                 err = zfs_send_one(zhp, fromname, STDOUT_FILENO, lzc_flags);
3877                 zfs_close(zhp);
3878                 return (err != 0);
3879         }
3880
3881         cp = strchr(argv[0], '@');
3882         *cp = '\0';
3883         toname = cp + 1;
3884         zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3885         if (zhp == NULL)
3886                 return (1);
3887
3888         /*
3889          * If they specified the full path to the snapshot, chop off
3890          * everything except the short name of the snapshot, but special
3891          * case if they specify the origin.
3892          */
3893         if (fromname && (cp = strchr(fromname, '@')) != NULL) {
3894                 char origin[ZFS_MAXNAMELEN];
3895                 zprop_source_t src;
3896
3897                 (void) zfs_prop_get(zhp, ZFS_PROP_ORIGIN,
3898                     origin, sizeof (origin), &src, NULL, 0, B_FALSE);
3899
3900                 if (strcmp(origin, fromname) == 0) {
3901                         fromname = NULL;
3902                         flags.fromorigin = B_TRUE;
3903                 } else {
3904                         *cp = '\0';
3905                         if (cp != fromname && strcmp(argv[0], fromname)) {
3906                                 (void) fprintf(stderr,
3907                                     gettext("incremental source must be "
3908                                     "in same filesystem\n"));
3909                                 usage(B_FALSE);
3910                         }
3911                         fromname = cp + 1;
3912                         if (strchr(fromname, '@') || strchr(fromname, '/')) {
3913                                 (void) fprintf(stderr,
3914                                     gettext("invalid incremental source\n"));
3915                                 usage(B_FALSE);
3916                         }
3917                 }
3918         }
3919
3920         if (flags.replicate && fromname == NULL)
3921                 flags.doall = B_TRUE;
3922
3923         err = zfs_send(zhp, fromname, toname, &flags, STDOUT_FILENO, NULL, 0,
3924             extraverbose ? &dbgnv : NULL);
3925
3926         if (extraverbose && dbgnv != NULL) {
3927                 /*
3928                  * dump_nvlist prints to stdout, but that's been
3929                  * redirected to a file.  Make it print to stderr
3930                  * instead.
3931                  */
3932                 (void) dup2(STDERR_FILENO, STDOUT_FILENO);
3933                 dump_nvlist(dbgnv, 0);
3934                 nvlist_free(dbgnv);
3935         }
3936         zfs_close(zhp);
3937
3938         return (err != 0);
3939 }
3940
3941 /*
3942  * Restore a backup stream from stdin.
3943  */
3944 static int
3945 zfs_do_receive(int argc, char **argv)
3946 {
3947         int c, err;
3948         recvflags_t flags = { 0 };
3949         boolean_t abort_resumable = B_FALSE;
3950
3951         nvlist_t *props;
3952         nvpair_t *nvp = NULL;
3953
3954         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
3955                 nomem();
3956
3957         /* check options */
3958         while ((c = getopt(argc, argv, ":o:denuvFsA")) != -1) {
3959                 switch (c) {
3960                 case 'o':
3961                         if (parseprop(props, optarg) != 0)
3962                                 return (1);
3963                         break;
3964                 case 'd':
3965                         flags.isprefix = B_TRUE;
3966                         break;
3967                 case 'e':
3968                         flags.isprefix = B_TRUE;
3969                         flags.istail = B_TRUE;
3970                         break;
3971                 case 'n':
3972                         flags.dryrun = B_TRUE;
3973                         break;
3974                 case 'u':
3975                         flags.nomount = B_TRUE;
3976                         break;
3977                 case 'v':
3978                         flags.verbose = B_TRUE;
3979                         break;
3980                 case 's':
3981                         flags.resumable = B_TRUE;
3982                         break;
3983                 case 'F':
3984                         flags.force = B_TRUE;
3985                         break;
3986                 case 'A':
3987                         abort_resumable = B_TRUE;
3988                         break;
3989                 case ':':
3990                         (void) fprintf(stderr, gettext("missing argument for "
3991                             "'%c' option\n"), optopt);
3992                         usage(B_FALSE);
3993                         break;
3994                 case '?':
3995                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3996                             optopt);
3997                         usage(B_FALSE);
3998                 }
3999         }
4000
4001         argc -= optind;
4002         argv += optind;
4003
4004         /* check number of arguments */
4005         if (argc < 1) {
4006                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
4007                 usage(B_FALSE);
4008         }
4009         if (argc > 1) {
4010                 (void) fprintf(stderr, gettext("too many arguments\n"));
4011                 usage(B_FALSE);
4012         }
4013
4014         while ((nvp = nvlist_next_nvpair(props, nvp))) {
4015                 if (strcmp(nvpair_name(nvp), "origin") != 0) {
4016                         (void) fprintf(stderr, gettext("invalid option"));
4017                         usage(B_FALSE);
4018                 }
4019         }
4020
4021         if (abort_resumable) {
4022                 if (flags.isprefix || flags.istail || flags.dryrun ||
4023                     flags.resumable || flags.nomount) {
4024                         (void) fprintf(stderr, gettext("invalid option"));
4025                         usage(B_FALSE);
4026                 }
4027
4028                 char namebuf[ZFS_MAXNAMELEN];
4029                 (void) snprintf(namebuf, sizeof (namebuf),
4030                     "%s/%%recv", argv[0]);
4031
4032                 if (zfs_dataset_exists(g_zfs, namebuf,
4033                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME)) {
4034                         zfs_handle_t *zhp = zfs_open(g_zfs,
4035                             namebuf, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
4036                         if (zhp == NULL)
4037                                 return (1);
4038                         err = zfs_destroy(zhp, B_FALSE);
4039                 } else {
4040                         zfs_handle_t *zhp = zfs_open(g_zfs,
4041                             argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
4042                         if (zhp == NULL)
4043                                 usage(B_FALSE);
4044                         if (!zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) ||
4045                             zfs_prop_get(zhp, ZFS_PROP_RECEIVE_RESUME_TOKEN,
4046                             NULL, 0, NULL, NULL, 0, B_TRUE) == -1) {
4047                                 (void) fprintf(stderr,
4048                                     gettext("'%s' does not have any "
4049                                     "resumable receive state to abort\n"),
4050                                     argv[0]);
4051                                 return (1);
4052                         }
4053                         err = zfs_destroy(zhp, B_FALSE);
4054                 }
4055
4056                 return (err != 0);
4057         }
4058
4059         if (isatty(STDIN_FILENO)) {
4060                 (void) fprintf(stderr,
4061                     gettext("Error: Backup stream can not be read "
4062                     "from a terminal.\n"
4063                     "You must redirect standard input.\n"));
4064                 return (1);
4065         }
4066         err = zfs_receive(g_zfs, argv[0], props, &flags, STDIN_FILENO, NULL);
4067
4068         return (err != 0);
4069 }
4070
4071 /*
4072  * allow/unallow stuff
4073  */
4074 /* copied from zfs/sys/dsl_deleg.h */
4075 #define ZFS_DELEG_PERM_CREATE           "create"
4076 #define ZFS_DELEG_PERM_DESTROY          "destroy"
4077 #define ZFS_DELEG_PERM_SNAPSHOT         "snapshot"
4078 #define ZFS_DELEG_PERM_ROLLBACK         "rollback"
4079 #define ZFS_DELEG_PERM_CLONE            "clone"
4080 #define ZFS_DELEG_PERM_PROMOTE          "promote"
4081 #define ZFS_DELEG_PERM_RENAME           "rename"
4082 #define ZFS_DELEG_PERM_MOUNT            "mount"
4083 #define ZFS_DELEG_PERM_SHARE            "share"
4084 #define ZFS_DELEG_PERM_SEND             "send"
4085 #define ZFS_DELEG_PERM_RECEIVE          "receive"
4086 #define ZFS_DELEG_PERM_ALLOW            "allow"
4087 #define ZFS_DELEG_PERM_USERPROP         "userprop"
4088 #define ZFS_DELEG_PERM_VSCAN            "vscan" /* ??? */
4089 #define ZFS_DELEG_PERM_USERQUOTA        "userquota"
4090 #define ZFS_DELEG_PERM_GROUPQUOTA       "groupquota"
4091 #define ZFS_DELEG_PERM_USERUSED         "userused"
4092 #define ZFS_DELEG_PERM_GROUPUSED        "groupused"
4093 #define ZFS_DELEG_PERM_HOLD             "hold"
4094 #define ZFS_DELEG_PERM_RELEASE          "release"
4095 #define ZFS_DELEG_PERM_DIFF             "diff"
4096 #define ZFS_DELEG_PERM_BOOKMARK         "bookmark"
4097
4098 #define ZFS_NUM_DELEG_NOTES ZFS_DELEG_NOTE_NONE
4099
4100 static zfs_deleg_perm_tab_t zfs_deleg_perm_tbl[] = {
4101         { ZFS_DELEG_PERM_ALLOW, ZFS_DELEG_NOTE_ALLOW },
4102         { ZFS_DELEG_PERM_CLONE, ZFS_DELEG_NOTE_CLONE },
4103         { ZFS_DELEG_PERM_CREATE, ZFS_DELEG_NOTE_CREATE },
4104         { ZFS_DELEG_PERM_DESTROY, ZFS_DELEG_NOTE_DESTROY },
4105         { ZFS_DELEG_PERM_DIFF, ZFS_DELEG_NOTE_DIFF},
4106         { ZFS_DELEG_PERM_HOLD, ZFS_DELEG_NOTE_HOLD },
4107         { ZFS_DELEG_PERM_MOUNT, ZFS_DELEG_NOTE_MOUNT },
4108         { ZFS_DELEG_PERM_PROMOTE, ZFS_DELEG_NOTE_PROMOTE },
4109         { ZFS_DELEG_PERM_RECEIVE, ZFS_DELEG_NOTE_RECEIVE },
4110         { ZFS_DELEG_PERM_RELEASE, ZFS_DELEG_NOTE_RELEASE },
4111         { ZFS_DELEG_PERM_RENAME, ZFS_DELEG_NOTE_RENAME },
4112         { ZFS_DELEG_PERM_ROLLBACK, ZFS_DELEG_NOTE_ROLLBACK },
4113         { ZFS_DELEG_PERM_SEND, ZFS_DELEG_NOTE_SEND },
4114         { ZFS_DELEG_PERM_SHARE, ZFS_DELEG_NOTE_SHARE },
4115         { ZFS_DELEG_PERM_SNAPSHOT, ZFS_DELEG_NOTE_SNAPSHOT },
4116         { ZFS_DELEG_PERM_BOOKMARK, ZFS_DELEG_NOTE_BOOKMARK },
4117
4118         { ZFS_DELEG_PERM_GROUPQUOTA, ZFS_DELEG_NOTE_GROUPQUOTA },
4119         { ZFS_DELEG_PERM_GROUPUSED, ZFS_DELEG_NOTE_GROUPUSED },
4120         { ZFS_DELEG_PERM_USERPROP, ZFS_DELEG_NOTE_USERPROP },
4121         { ZFS_DELEG_PERM_USERQUOTA, ZFS_DELEG_NOTE_USERQUOTA },
4122         { ZFS_DELEG_PERM_USERUSED, ZFS_DELEG_NOTE_USERUSED },
4123         { NULL, ZFS_DELEG_NOTE_NONE }
4124 };
4125
4126 /* permission structure */
4127 typedef struct deleg_perm {
4128         zfs_deleg_who_type_t    dp_who_type;
4129         const char              *dp_name;
4130         boolean_t               dp_local;
4131         boolean_t               dp_descend;
4132 } deleg_perm_t;
4133
4134 /* */
4135 typedef struct deleg_perm_node {
4136         deleg_perm_t            dpn_perm;
4137
4138         uu_avl_node_t           dpn_avl_node;
4139 } deleg_perm_node_t;
4140
4141 typedef struct fs_perm fs_perm_t;
4142
4143 /* permissions set */
4144 typedef struct who_perm {
4145         zfs_deleg_who_type_t    who_type;
4146         const char              *who_name;              /* id */
4147         char                    who_ug_name[256];       /* user/group name */
4148         fs_perm_t               *who_fsperm;            /* uplink */
4149
4150         uu_avl_t                *who_deleg_perm_avl;    /* permissions */
4151 } who_perm_t;
4152
4153 /* */
4154 typedef struct who_perm_node {
4155         who_perm_t      who_perm;
4156         uu_avl_node_t   who_avl_node;
4157 } who_perm_node_t;
4158
4159 typedef struct fs_perm_set fs_perm_set_t;
4160 /* fs permissions */
4161 struct fs_perm {
4162         const char              *fsp_name;
4163
4164         uu_avl_t                *fsp_sc_avl;    /* sets,create */
4165         uu_avl_t                *fsp_uge_avl;   /* user,group,everyone */
4166
4167         fs_perm_set_t           *fsp_set;       /* uplink */
4168 };
4169
4170 /* */
4171 typedef struct fs_perm_node {
4172         fs_perm_t       fspn_fsperm;
4173         uu_avl_t        *fspn_avl;
4174
4175         uu_list_node_t  fspn_list_node;
4176 } fs_perm_node_t;
4177
4178 /* top level structure */
4179 struct fs_perm_set {
4180         uu_list_pool_t  *fsps_list_pool;
4181         uu_list_t       *fsps_list; /* list of fs_perms */
4182
4183         uu_avl_pool_t   *fsps_named_set_avl_pool;
4184         uu_avl_pool_t   *fsps_who_perm_avl_pool;
4185         uu_avl_pool_t   *fsps_deleg_perm_avl_pool;
4186 };
4187
4188 static inline const char *
4189 deleg_perm_type(zfs_deleg_note_t note)
4190 {
4191         /* subcommands */
4192         switch (note) {
4193                 /* SUBCOMMANDS */
4194                 /* OTHER */
4195         case ZFS_DELEG_NOTE_GROUPQUOTA:
4196         case ZFS_DELEG_NOTE_GROUPUSED:
4197         case ZFS_DELEG_NOTE_USERPROP:
4198         case ZFS_DELEG_NOTE_USERQUOTA:
4199         case ZFS_DELEG_NOTE_USERUSED:
4200                 /* other */
4201                 return (gettext("other"));
4202         default:
4203                 return (gettext("subcommand"));
4204         }
4205 }
4206
4207 static int inline
4208 who_type2weight(zfs_deleg_who_type_t who_type)
4209 {
4210         int res;
4211         switch (who_type) {
4212                 case ZFS_DELEG_NAMED_SET_SETS:
4213                 case ZFS_DELEG_NAMED_SET:
4214                         res = 0;
4215                         break;
4216                 case ZFS_DELEG_CREATE_SETS:
4217                 case ZFS_DELEG_CREATE:
4218                         res = 1;
4219                         break;
4220                 case ZFS_DELEG_USER_SETS:
4221                 case ZFS_DELEG_USER:
4222                         res = 2;
4223                         break;
4224                 case ZFS_DELEG_GROUP_SETS:
4225                 case ZFS_DELEG_GROUP:
4226                         res = 3;
4227                         break;
4228                 case ZFS_DELEG_EVERYONE_SETS:
4229                 case ZFS_DELEG_EVERYONE:
4230                         res = 4;
4231                         break;
4232                 default:
4233                         res = -1;
4234         }
4235
4236         return (res);
4237 }
4238
4239 /* ARGSUSED */
4240 static int
4241 who_perm_compare(const void *larg, const void *rarg, void *unused)
4242 {
4243         const who_perm_node_t *l = larg;
4244         const who_perm_node_t *r = rarg;
4245         zfs_deleg_who_type_t ltype = l->who_perm.who_type;
4246         zfs_deleg_who_type_t rtype = r->who_perm.who_type;
4247         int lweight = who_type2weight(ltype);
4248         int rweight = who_type2weight(rtype);
4249         int res = lweight - rweight;
4250         if (res == 0)
4251                 res = strncmp(l->who_perm.who_name, r->who_perm.who_name,
4252                     ZFS_MAX_DELEG_NAME-1);
4253
4254         if (res == 0)
4255                 return (0);
4256         if (res > 0)
4257                 return (1);
4258         else
4259                 return (-1);
4260 }
4261
4262 /* ARGSUSED */
4263 static int
4264 deleg_perm_compare(const void *larg, const void *rarg, void *unused)
4265 {
4266         const deleg_perm_node_t *l = larg;
4267         const deleg_perm_node_t *r = rarg;
4268         int res =  strncmp(l->dpn_perm.dp_name, r->dpn_perm.dp_name,
4269             ZFS_MAX_DELEG_NAME-1);
4270
4271         if (res == 0)
4272                 return (0);
4273
4274         if (res > 0)
4275                 return (1);
4276         else
4277                 return (-1);
4278 }
4279
4280 static inline void
4281 fs_perm_set_init(fs_perm_set_t *fspset)
4282 {
4283         bzero(fspset, sizeof (fs_perm_set_t));
4284
4285         if ((fspset->fsps_list_pool = uu_list_pool_create("fsps_list_pool",
4286             sizeof (fs_perm_node_t), offsetof(fs_perm_node_t, fspn_list_node),
4287             NULL, UU_DEFAULT)) == NULL)
4288                 nomem();
4289         if ((fspset->fsps_list = uu_list_create(fspset->fsps_list_pool, NULL,
4290             UU_DEFAULT)) == NULL)
4291                 nomem();
4292
4293         if ((fspset->fsps_named_set_avl_pool = uu_avl_pool_create(
4294             "named_set_avl_pool", sizeof (who_perm_node_t), offsetof(
4295             who_perm_node_t, who_avl_node), who_perm_compare,
4296             UU_DEFAULT)) == NULL)
4297                 nomem();
4298
4299         if ((fspset->fsps_who_perm_avl_pool = uu_avl_pool_create(
4300             "who_perm_avl_pool", sizeof (who_perm_node_t), offsetof(
4301             who_perm_node_t, who_avl_node), who_perm_compare,
4302             UU_DEFAULT)) == NULL)
4303                 nomem();
4304
4305         if ((fspset->fsps_deleg_perm_avl_pool = uu_avl_pool_create(
4306             "deleg_perm_avl_pool", sizeof (deleg_perm_node_t), offsetof(
4307             deleg_perm_node_t, dpn_avl_node), deleg_perm_compare, UU_DEFAULT))
4308             == NULL)
4309                 nomem();
4310 }
4311
4312 static inline void fs_perm_fini(fs_perm_t *);
4313 static inline void who_perm_fini(who_perm_t *);
4314
4315 static inline void
4316 fs_perm_set_fini(fs_perm_set_t *fspset)
4317 {
4318         fs_perm_node_t *node = uu_list_first(fspset->fsps_list);
4319
4320         while (node != NULL) {
4321                 fs_perm_node_t *next_node =
4322                     uu_list_next(fspset->fsps_list, node);
4323                 fs_perm_t *fsperm = &node->fspn_fsperm;
4324                 fs_perm_fini(fsperm);
4325                 uu_list_remove(fspset->fsps_list, node);
4326                 free(node);
4327                 node = next_node;
4328         }
4329
4330         uu_avl_pool_destroy(fspset->fsps_named_set_avl_pool);
4331         uu_avl_pool_destroy(fspset->fsps_who_perm_avl_pool);
4332         uu_avl_pool_destroy(fspset->fsps_deleg_perm_avl_pool);
4333 }
4334
4335 static inline void
4336 deleg_perm_init(deleg_perm_t *deleg_perm, zfs_deleg_who_type_t type,
4337     const char *name)
4338 {
4339         deleg_perm->dp_who_type = type;
4340         deleg_perm->dp_name = name;
4341 }
4342
4343 static inline void
4344 who_perm_init(who_perm_t *who_perm, fs_perm_t *fsperm,
4345     zfs_deleg_who_type_t type, const char *name)
4346 {
4347         uu_avl_pool_t   *pool;
4348         pool = fsperm->fsp_set->fsps_deleg_perm_avl_pool;
4349
4350         bzero(who_perm, sizeof (who_perm_t));
4351
4352         if ((who_perm->who_deleg_perm_avl = uu_avl_create(pool, NULL,
4353             UU_DEFAULT)) == NULL)
4354                 nomem();
4355
4356         who_perm->who_type = type;
4357         who_perm->who_name = name;
4358         who_perm->who_fsperm = fsperm;
4359 }
4360
4361 static inline void
4362 who_perm_fini(who_perm_t *who_perm)
4363 {
4364         deleg_perm_node_t *node = uu_avl_first(who_perm->who_deleg_perm_avl);
4365
4366         while (node != NULL) {
4367                 deleg_perm_node_t *next_node =
4368                     uu_avl_next(who_perm->who_deleg_perm_avl, node);
4369
4370                 uu_avl_remove(who_perm->who_deleg_perm_avl, node);
4371                 free(node);
4372                 node = next_node;
4373         }
4374
4375         uu_avl_destroy(who_perm->who_deleg_perm_avl);
4376 }
4377
4378 static inline void
4379 fs_perm_init(fs_perm_t *fsperm, fs_perm_set_t *fspset, const char *fsname)
4380 {
4381         uu_avl_pool_t   *nset_pool = fspset->fsps_named_set_avl_pool;
4382         uu_avl_pool_t   *who_pool = fspset->fsps_who_perm_avl_pool;
4383
4384         bzero(fsperm, sizeof (fs_perm_t));
4385
4386         if ((fsperm->fsp_sc_avl = uu_avl_create(nset_pool, NULL, UU_DEFAULT))
4387             == NULL)
4388                 nomem();
4389
4390         if ((fsperm->fsp_uge_avl = uu_avl_create(who_pool, NULL, UU_DEFAULT))
4391             == NULL)
4392                 nomem();
4393
4394         fsperm->fsp_set = fspset;
4395         fsperm->fsp_name = fsname;
4396 }
4397
4398 static inline void
4399 fs_perm_fini(fs_perm_t *fsperm)
4400 {
4401         who_perm_node_t *node = uu_avl_first(fsperm->fsp_sc_avl);
4402         while (node != NULL) {
4403                 who_perm_node_t *next_node = uu_avl_next(fsperm->fsp_sc_avl,
4404                     node);
4405                 who_perm_t *who_perm = &node->who_perm;
4406                 who_perm_fini(who_perm);
4407                 uu_avl_remove(fsperm->fsp_sc_avl, node);
4408                 free(node);
4409                 node = next_node;
4410         }
4411
4412         node = uu_avl_first(fsperm->fsp_uge_avl);
4413         while (node != NULL) {
4414                 who_perm_node_t *next_node = uu_avl_next(fsperm->fsp_uge_avl,
4415                     node);
4416                 who_perm_t *who_perm = &node->who_perm;
4417                 who_perm_fini(who_perm);
4418                 uu_avl_remove(fsperm->fsp_uge_avl, node);
4419                 free(node);
4420                 node = next_node;
4421         }
4422
4423         uu_avl_destroy(fsperm->fsp_sc_avl);
4424         uu_avl_destroy(fsperm->fsp_uge_avl);
4425 }
4426
4427 static void inline
4428 set_deleg_perm_node(uu_avl_t *avl, deleg_perm_node_t *node,
4429     zfs_deleg_who_type_t who_type, const char *name, char locality)
4430 {
4431         uu_avl_index_t idx = 0;
4432
4433         deleg_perm_node_t *found_node = NULL;
4434         deleg_perm_t    *deleg_perm = &node->dpn_perm;
4435
4436         deleg_perm_init(deleg_perm, who_type, name);
4437
4438         if ((found_node = uu_avl_find(avl, node, NULL, &idx))
4439             == NULL)
4440                 uu_avl_insert(avl, node, idx);
4441         else {
4442                 node = found_node;
4443                 deleg_perm = &node->dpn_perm;
4444         }
4445
4446
4447         switch (locality) {
4448         case ZFS_DELEG_LOCAL:
4449                 deleg_perm->dp_local = B_TRUE;
4450                 break;
4451         case ZFS_DELEG_DESCENDENT:
4452                 deleg_perm->dp_descend = B_TRUE;
4453                 break;
4454         case ZFS_DELEG_NA:
4455                 break;
4456         default:
4457                 assert(B_FALSE); /* invalid locality */
4458         }
4459 }
4460
4461 static inline int
4462 parse_who_perm(who_perm_t *who_perm, nvlist_t *nvl, char locality)
4463 {
4464         nvpair_t *nvp = NULL;
4465         fs_perm_set_t *fspset = who_perm->who_fsperm->fsp_set;
4466         uu_avl_t *avl = who_perm->who_deleg_perm_avl;
4467         zfs_deleg_who_type_t who_type = who_perm->who_type;
4468
4469         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4470                 const char *name = nvpair_name(nvp);
4471                 data_type_t type = nvpair_type(nvp);
4472                 uu_avl_pool_t *avl_pool = fspset->fsps_deleg_perm_avl_pool;
4473                 deleg_perm_node_t *node =
4474                     safe_malloc(sizeof (deleg_perm_node_t));
4475
4476                 assert(type == DATA_TYPE_BOOLEAN);
4477
4478                 uu_avl_node_init(node, &node->dpn_avl_node, avl_pool);
4479                 set_deleg_perm_node(avl, node, who_type, name, locality);
4480         }
4481
4482         return (0);
4483 }
4484
4485 static inline int
4486 parse_fs_perm(fs_perm_t *fsperm, nvlist_t *nvl)
4487 {
4488         nvpair_t *nvp = NULL;
4489         fs_perm_set_t *fspset = fsperm->fsp_set;
4490
4491         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4492                 nvlist_t *nvl2 = NULL;
4493                 const char *name = nvpair_name(nvp);
4494                 uu_avl_t *avl = NULL;
4495                 uu_avl_pool_t *avl_pool;
4496                 zfs_deleg_who_type_t perm_type = name[0];
4497                 char perm_locality = name[1];
4498                 const char *perm_name = name + 3;
4499                 boolean_t is_set = B_TRUE;
4500                 who_perm_t *who_perm = NULL;
4501
4502                 assert('$' == name[2]);
4503
4504                 if (nvpair_value_nvlist(nvp, &nvl2) != 0)
4505                         return (-1);
4506
4507                 switch (perm_type) {
4508                 case ZFS_DELEG_CREATE:
4509                 case ZFS_DELEG_CREATE_SETS:
4510                 case ZFS_DELEG_NAMED_SET:
4511                 case ZFS_DELEG_NAMED_SET_SETS:
4512                         avl_pool = fspset->fsps_named_set_avl_pool;
4513                         avl = fsperm->fsp_sc_avl;
4514                         break;
4515                 case ZFS_DELEG_USER:
4516                 case ZFS_DELEG_USER_SETS:
4517                 case ZFS_DELEG_GROUP:
4518                 case ZFS_DELEG_GROUP_SETS:
4519                 case ZFS_DELEG_EVERYONE:
4520                 case ZFS_DELEG_EVERYONE_SETS:
4521                         avl_pool = fspset->fsps_who_perm_avl_pool;
4522                         avl = fsperm->fsp_uge_avl;
4523                         break;
4524                 }
4525
4526                 if (is_set) {
4527                         who_perm_node_t *found_node = NULL;
4528                         who_perm_node_t *node = safe_malloc(
4529                             sizeof (who_perm_node_t));
4530                         who_perm = &node->who_perm;
4531                         uu_avl_index_t idx = 0;
4532
4533                         uu_avl_node_init(node, &node->who_avl_node, avl_pool);
4534                         who_perm_init(who_perm, fsperm, perm_type, perm_name);
4535
4536                         if ((found_node = uu_avl_find(avl, node, NULL, &idx))
4537                             == NULL) {
4538                                 if (avl == fsperm->fsp_uge_avl) {
4539                                         uid_t rid = 0;
4540                                         struct passwd *p = NULL;
4541                                         struct group *g = NULL;
4542                                         const char *nice_name = NULL;
4543
4544                                         switch (perm_type) {
4545                                         case ZFS_DELEG_USER_SETS:
4546                                         case ZFS_DELEG_USER:
4547                                                 rid = atoi(perm_name);
4548                                                 p = getpwuid(rid);
4549                                                 if (p)
4550                                                         nice_name = p->pw_name;
4551                                                 break;
4552                                         case ZFS_DELEG_GROUP_SETS:
4553                                         case ZFS_DELEG_GROUP:
4554                                                 rid = atoi(perm_name);
4555                                                 g = getgrgid(rid);
4556                                                 if (g)
4557                                                         nice_name = g->gr_name;
4558                                                 break;
4559                                         }
4560
4561                                         if (nice_name != NULL)
4562                                                 (void) strlcpy(
4563                                                     node->who_perm.who_ug_name,
4564                                                     nice_name, 256);
4565                                 }
4566
4567                                 uu_avl_insert(avl, node, idx);
4568                         } else {
4569                                 node = found_node;
4570                                 who_perm = &node->who_perm;
4571                         }
4572                 }
4573
4574                 (void) parse_who_perm(who_perm, nvl2, perm_locality);
4575         }
4576
4577         return (0);
4578 }
4579
4580 static inline int
4581 parse_fs_perm_set(fs_perm_set_t *fspset, nvlist_t *nvl)
4582 {
4583         nvpair_t *nvp = NULL;
4584         uu_avl_index_t idx = 0;
4585
4586         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4587                 nvlist_t *nvl2 = NULL;
4588                 const char *fsname = nvpair_name(nvp);
4589                 data_type_t type = nvpair_type(nvp);
4590                 fs_perm_t *fsperm = NULL;
4591                 fs_perm_node_t *node = safe_malloc(sizeof (fs_perm_node_t));
4592                 if (node == NULL)
4593                         nomem();
4594
4595                 fsperm = &node->fspn_fsperm;
4596
4597                 assert(DATA_TYPE_NVLIST == type);
4598
4599                 uu_list_node_init(node, &node->fspn_list_node,
4600                     fspset->fsps_list_pool);
4601
4602                 idx = uu_list_numnodes(fspset->fsps_list);
4603                 fs_perm_init(fsperm, fspset, fsname);
4604
4605                 if (nvpair_value_nvlist(nvp, &nvl2) != 0)
4606                         return (-1);
4607
4608                 (void) parse_fs_perm(fsperm, nvl2);
4609
4610                 uu_list_insert(fspset->fsps_list, node, idx);
4611         }
4612
4613         return (0);
4614 }
4615
4616 static inline const char *
4617 deleg_perm_comment(zfs_deleg_note_t note)
4618 {
4619         const char *str = "";
4620
4621         /* subcommands */
4622         switch (note) {
4623                 /* SUBCOMMANDS */
4624         case ZFS_DELEG_NOTE_ALLOW:
4625                 str = gettext("Must also have the permission that is being"
4626                     "\n\t\t\t\tallowed");
4627                 break;
4628         case ZFS_DELEG_NOTE_CLONE:
4629                 str = gettext("Must also have the 'create' ability and 'mount'"
4630                     "\n\t\t\t\tability in the origin file system");
4631                 break;
4632         case ZFS_DELEG_NOTE_CREATE:
4633                 str = gettext("Must also have the 'mount' ability");
4634                 break;
4635         case ZFS_DELEG_NOTE_DESTROY:
4636                 str = gettext("Must also have the 'mount' ability");
4637                 break;
4638         case ZFS_DELEG_NOTE_DIFF:
4639                 str = gettext("Allows lookup of paths within a dataset;"
4640                     "\n\t\t\t\tgiven an object number. Ordinary users need this"
4641                     "\n\t\t\t\tin order to use zfs diff");
4642                 break;
4643         case ZFS_DELEG_NOTE_HOLD:
4644                 str = gettext("Allows adding a user hold to a snapshot");
4645                 break;
4646         case ZFS_DELEG_NOTE_MOUNT:
4647                 str = gettext("Allows mount/umount of ZFS datasets");
4648                 break;
4649         case ZFS_DELEG_NOTE_PROMOTE:
4650                 str = gettext("Must also have the 'mount'\n\t\t\t\tand"
4651                     " 'promote' ability in the origin file system");
4652                 break;
4653         case ZFS_DELEG_NOTE_RECEIVE:
4654                 str = gettext("Must also have the 'mount' and 'create'"
4655                     " ability");
4656                 break;
4657         case ZFS_DELEG_NOTE_RELEASE:
4658                 str = gettext("Allows releasing a user hold which\n\t\t\t\t"
4659                     "might destroy the snapshot");
4660                 break;
4661         case ZFS_DELEG_NOTE_RENAME:
4662                 str = gettext("Must also have the 'mount' and 'create'"
4663                     "\n\t\t\t\tability in the new parent");
4664                 break;
4665         case ZFS_DELEG_NOTE_ROLLBACK:
4666                 str = gettext("");
4667                 break;
4668         case ZFS_DELEG_NOTE_SEND:
4669                 str = gettext("");
4670                 break;
4671         case ZFS_DELEG_NOTE_SHARE:
4672                 str = gettext("Allows sharing file systems over NFS or SMB"
4673                     "\n\t\t\t\tprotocols");
4674                 break;
4675         case ZFS_DELEG_NOTE_SNAPSHOT:
4676                 str = gettext("");
4677                 break;
4678 /*
4679  *      case ZFS_DELEG_NOTE_VSCAN:
4680  *              str = gettext("");
4681  *              break;
4682  */
4683                 /* OTHER */
4684         case ZFS_DELEG_NOTE_GROUPQUOTA:
4685                 str = gettext("Allows accessing any groupquota@... property");
4686                 break;
4687         case ZFS_DELEG_NOTE_GROUPUSED:
4688                 str = gettext("Allows reading any groupused@... property");
4689                 break;
4690         case ZFS_DELEG_NOTE_USERPROP:
4691                 str = gettext("Allows changing any user property");
4692                 break;
4693         case ZFS_DELEG_NOTE_USERQUOTA:
4694                 str = gettext("Allows accessing any userquota@... property");
4695                 break;
4696         case ZFS_DELEG_NOTE_USERUSED:
4697                 str = gettext("Allows reading any userused@... property");
4698                 break;
4699                 /* other */
4700         default:
4701                 str = "";
4702         }
4703
4704         return (str);
4705 }
4706
4707 struct allow_opts {
4708         boolean_t local;
4709         boolean_t descend;
4710         boolean_t user;
4711         boolean_t group;
4712         boolean_t everyone;
4713         boolean_t create;
4714         boolean_t set;
4715         boolean_t recursive; /* unallow only */
4716         boolean_t prt_usage;
4717
4718         boolean_t prt_perms;
4719         char *who;
4720         char *perms;
4721         const char *dataset;
4722 };
4723
4724 static inline int
4725 prop_cmp(const void *a, const void *b)
4726 {
4727         const char *str1 = *(const char **)a;
4728         const char *str2 = *(const char **)b;
4729         return (strcmp(str1, str2));
4730 }
4731
4732 static void
4733 allow_usage(boolean_t un, boolean_t requested, const char *msg)
4734 {
4735         const char *opt_desc[] = {
4736                 "-h", gettext("show this help message and exit"),
4737                 "-l", gettext("set permission locally"),
4738                 "-d", gettext("set permission for descents"),
4739                 "-u", gettext("set permission for user"),
4740                 "-g", gettext("set permission for group"),
4741                 "-e", gettext("set permission for everyone"),
4742                 "-c", gettext("set create time permission"),
4743                 "-s", gettext("define permission set"),
4744                 /* unallow only */
4745                 "-r", gettext("remove permissions recursively"),
4746         };
4747         size_t unallow_size = sizeof (opt_desc) / sizeof (char *);
4748         size_t allow_size = unallow_size - 2;
4749         const char *props[ZFS_NUM_PROPS];
4750         int i;
4751         size_t count = 0;
4752         FILE *fp = requested ? stdout : stderr;
4753         zprop_desc_t *pdtbl = zfs_prop_get_table();
4754         const char *fmt = gettext("%-16s %-14s\t%s\n");
4755
4756         (void) fprintf(fp, gettext("Usage: %s\n"), get_usage(un ? HELP_UNALLOW :
4757             HELP_ALLOW));
4758         (void) fprintf(fp, gettext("Options:\n"));
4759         for (i = 0; i < (un ? unallow_size : allow_size); i++) {
4760                 const char *opt = opt_desc[i++];
4761                 const char *optdsc = opt_desc[i];
4762                 (void) fprintf(fp, gettext("  %-10s  %s\n"), opt, optdsc);
4763         }
4764
4765         (void) fprintf(fp, gettext("\nThe following permissions are "
4766             "supported:\n\n"));
4767         (void) fprintf(fp, fmt, gettext("NAME"), gettext("TYPE"),
4768             gettext("NOTES"));
4769         for (i = 0; i < ZFS_NUM_DELEG_NOTES; i++) {
4770                 const char *perm_name = zfs_deleg_perm_tbl[i].z_perm;
4771                 zfs_deleg_note_t perm_note = zfs_deleg_perm_tbl[i].z_note;
4772                 const char *perm_type = deleg_perm_type(perm_note);
4773                 const char *perm_comment = deleg_perm_comment(perm_note);
4774                 (void) fprintf(fp, fmt, perm_name, perm_type, perm_comment);
4775         }
4776
4777         for (i = 0; i < ZFS_NUM_PROPS; i++) {
4778                 zprop_desc_t *pd = &pdtbl[i];
4779                 if (pd->pd_visible != B_TRUE)
4780                         continue;
4781
4782                 if (pd->pd_attr == PROP_READONLY)
4783                         continue;
4784
4785                 props[count++] = pd->pd_name;
4786         }
4787         props[count] = NULL;
4788
4789         qsort(props, count, sizeof (char *), prop_cmp);
4790
4791         for (i = 0; i < count; i++)
4792                 (void) fprintf(fp, fmt, props[i], gettext("property"), "");
4793
4794         if (msg != NULL)
4795                 (void) fprintf(fp, gettext("\nzfs: error: %s"), msg);
4796
4797         exit(requested ? 0 : 2);
4798 }
4799
4800 static inline const char *
4801 munge_args(int argc, char **argv, boolean_t un, size_t expected_argc,
4802     char **permsp)
4803 {
4804         if (un && argc == expected_argc - 1)
4805                 *permsp = NULL;
4806         else if (argc == expected_argc)
4807                 *permsp = argv[argc - 2];
4808         else
4809                 allow_usage(un, B_FALSE,
4810                     gettext("wrong number of parameters\n"));
4811
4812         return (argv[argc - 1]);
4813 }
4814
4815 static void
4816 parse_allow_args(int argc, char **argv, boolean_t un, struct allow_opts *opts)
4817 {
4818         int uge_sum = opts->user + opts->group + opts->everyone;
4819         int csuge_sum = opts->create + opts->set + uge_sum;
4820         int ldcsuge_sum = csuge_sum + opts->local + opts->descend;
4821         int all_sum = un ? ldcsuge_sum + opts->recursive : ldcsuge_sum;
4822
4823         if (uge_sum > 1)
4824                 allow_usage(un, B_FALSE,
4825                     gettext("-u, -g, and -e are mutually exclusive\n"));
4826
4827         if (opts->prt_usage)
4828                 if (argc == 0 && all_sum == 0)
4829                         allow_usage(un, B_TRUE, NULL);
4830                 else
4831                         usage(B_FALSE);
4832
4833         if (opts->set) {
4834                 if (csuge_sum > 1)
4835                         allow_usage(un, B_FALSE,
4836                             gettext("invalid options combined with -s\n"));
4837
4838                 opts->dataset = munge_args(argc, argv, un, 3, &opts->perms);
4839                 if (argv[0][0] != '@')
4840                         allow_usage(un, B_FALSE,
4841                             gettext("invalid set name: missing '@' prefix\n"));
4842                 opts->who = argv[0];
4843         } else if (opts->create) {
4844                 if (ldcsuge_sum > 1)
4845                         allow_usage(un, B_FALSE,
4846                             gettext("invalid options combined with -c\n"));
4847                 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
4848         } else if (opts->everyone) {
4849                 if (csuge_sum > 1)
4850                         allow_usage(un, B_FALSE,
4851                             gettext("invalid options combined with -e\n"));
4852                 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
4853         } else if (uge_sum == 0 && argc > 0 && strcmp(argv[0], "everyone")
4854             == 0) {
4855                 opts->everyone = B_TRUE;
4856                 argc--;
4857                 argv++;
4858                 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
4859         } else if (argc == 1 && !un) {
4860                 opts->prt_perms = B_TRUE;
4861                 opts->dataset = argv[argc-1];
4862         } else {
4863                 opts->dataset = munge_args(argc, argv, un, 3, &opts->perms);
4864                 opts->who = argv[0];
4865         }
4866
4867         if (!opts->local && !opts->descend) {
4868                 opts->local = B_TRUE;
4869                 opts->descend = B_TRUE;
4870         }
4871 }
4872
4873 static void
4874 store_allow_perm(zfs_deleg_who_type_t type, boolean_t local, boolean_t descend,
4875     const char *who, char *perms, nvlist_t *top_nvl)
4876 {
4877         int i;
4878         char ld[2] = { '\0', '\0' };
4879         char who_buf[ZFS_MAXNAMELEN+32];
4880         char base_type;
4881         char set_type;
4882         nvlist_t *base_nvl = NULL;
4883         nvlist_t *set_nvl = NULL;
4884         nvlist_t *nvl;
4885
4886         if (nvlist_alloc(&base_nvl, NV_UNIQUE_NAME, 0) != 0)
4887                 nomem();
4888         if (nvlist_alloc(&set_nvl, NV_UNIQUE_NAME, 0) !=  0)
4889                 nomem();
4890
4891         switch (type) {
4892         case ZFS_DELEG_NAMED_SET_SETS:
4893         case ZFS_DELEG_NAMED_SET:
4894                 set_type = ZFS_DELEG_NAMED_SET_SETS;
4895                 base_type = ZFS_DELEG_NAMED_SET;
4896                 ld[0] = ZFS_DELEG_NA;
4897                 break;
4898         case ZFS_DELEG_CREATE_SETS:
4899         case ZFS_DELEG_CREATE:
4900                 set_type = ZFS_DELEG_CREATE_SETS;
4901                 base_type = ZFS_DELEG_CREATE;
4902                 ld[0] = ZFS_DELEG_NA;
4903                 break;
4904         case ZFS_DELEG_USER_SETS:
4905         case ZFS_DELEG_USER:
4906                 set_type = ZFS_DELEG_USER_SETS;
4907                 base_type = ZFS_DELEG_USER;
4908                 if (local)
4909                         ld[0] = ZFS_DELEG_LOCAL;
4910                 if (descend)
4911                         ld[1] = ZFS_DELEG_DESCENDENT;
4912                 break;
4913         case ZFS_DELEG_GROUP_SETS:
4914         case ZFS_DELEG_GROUP:
4915                 set_type = ZFS_DELEG_GROUP_SETS;
4916                 base_type = ZFS_DELEG_GROUP;
4917                 if (local)
4918                         ld[0] = ZFS_DELEG_LOCAL;
4919                 if (descend)
4920                         ld[1] = ZFS_DELEG_DESCENDENT;
4921                 break;
4922         case ZFS_DELEG_EVERYONE_SETS:
4923         case ZFS_DELEG_EVERYONE:
4924                 set_type = ZFS_DELEG_EVERYONE_SETS;
4925                 base_type = ZFS_DELEG_EVERYONE;
4926                 if (local)
4927                         ld[0] = ZFS_DELEG_LOCAL;
4928                 if (descend)
4929                         ld[1] = ZFS_DELEG_DESCENDENT;
4930         }
4931
4932         if (perms != NULL) {
4933                 char *curr = perms;
4934                 char *end = curr + strlen(perms);
4935
4936                 while (curr < end) {
4937                         char *delim = strchr(curr, ',');
4938                         if (delim == NULL)
4939                                 delim = end;
4940                         else
4941                                 *delim = '\0';
4942
4943                         if (curr[0] == '@')
4944                                 nvl = set_nvl;
4945                         else
4946                                 nvl = base_nvl;
4947
4948                         (void) nvlist_add_boolean(nvl, curr);
4949                         if (delim != end)
4950                                 *delim = ',';
4951                         curr = delim + 1;
4952                 }
4953
4954                 for (i = 0; i < 2; i++) {
4955                         char locality = ld[i];
4956                         if (locality == 0)
4957                                 continue;
4958
4959                         if (!nvlist_empty(base_nvl)) {
4960                                 if (who != NULL)
4961                                         (void) snprintf(who_buf,
4962                                             sizeof (who_buf), "%c%c$%s",
4963                                             base_type, locality, who);
4964                                 else
4965                                         (void) snprintf(who_buf,
4966                                             sizeof (who_buf), "%c%c$",
4967                                             base_type, locality);
4968
4969                                 (void) nvlist_add_nvlist(top_nvl, who_buf,
4970                                     base_nvl);
4971                         }
4972
4973
4974                         if (!nvlist_empty(set_nvl)) {
4975                                 if (who != NULL)
4976                                         (void) snprintf(who_buf,
4977                                             sizeof (who_buf), "%c%c$%s",
4978                                             set_type, locality, who);
4979                                 else
4980                                         (void) snprintf(who_buf,
4981                                             sizeof (who_buf), "%c%c$",
4982                                             set_type, locality);
4983
4984                                 (void) nvlist_add_nvlist(top_nvl, who_buf,
4985                                     set_nvl);
4986                         }
4987                 }
4988         } else {
4989                 for (i = 0; i < 2; i++) {
4990                         char locality = ld[i];
4991                         if (locality == 0)
4992                                 continue;
4993
4994                         if (who != NULL)
4995                                 (void) snprintf(who_buf, sizeof (who_buf),
4996                                     "%c%c$%s", base_type, locality, who);
4997                         else
4998                                 (void) snprintf(who_buf, sizeof (who_buf),
4999                                     "%c%c$", base_type, locality);
5000                         (void) nvlist_add_boolean(top_nvl, who_buf);
5001
5002                         if (who != NULL)
5003                                 (void) snprintf(who_buf, sizeof (who_buf),
5004                                     "%c%c$%s", set_type, locality, who);
5005                         else
5006                                 (void) snprintf(who_buf, sizeof (who_buf),
5007                                     "%c%c$", set_type, locality);
5008                         (void) nvlist_add_boolean(top_nvl, who_buf);
5009                 }
5010         }
5011 }
5012
5013 static int
5014 construct_fsacl_list(boolean_t un, struct allow_opts *opts, nvlist_t **nvlp)
5015 {
5016         if (nvlist_alloc(nvlp, NV_UNIQUE_NAME, 0) != 0)
5017                 nomem();
5018
5019         if (opts->set) {
5020                 store_allow_perm(ZFS_DELEG_NAMED_SET, opts->local,
5021                     opts->descend, opts->who, opts->perms, *nvlp);
5022         } else if (opts->create) {
5023                 store_allow_perm(ZFS_DELEG_CREATE, opts->local,
5024                     opts->descend, NULL, opts->perms, *nvlp);
5025         } else if (opts->everyone) {
5026                 store_allow_perm(ZFS_DELEG_EVERYONE, opts->local,
5027                     opts->descend, NULL, opts->perms, *nvlp);
5028         } else {
5029                 char *curr = opts->who;
5030                 char *end = curr + strlen(curr);
5031
5032                 while (curr < end) {
5033                         const char *who;
5034                         zfs_deleg_who_type_t who_type;
5035                         char *endch;
5036                         char *delim = strchr(curr, ',');
5037                         char errbuf[256];
5038                         char id[64];
5039                         struct passwd *p = NULL;
5040                         struct group *g = NULL;
5041
5042                         uid_t rid;
5043                         if (delim == NULL)
5044                                 delim = end;
5045                         else
5046                                 *delim = '\0';
5047
5048                         rid = (uid_t)strtol(curr, &endch, 0);
5049                         if (opts->user) {
5050                                 who_type = ZFS_DELEG_USER;
5051                                 if (*endch != '\0')
5052                                         p = getpwnam(curr);
5053                                 else
5054                                         p = getpwuid(rid);
5055
5056                                 if (p != NULL)
5057                                         rid = p->pw_uid;
5058                                 else {
5059                                         (void) snprintf(errbuf, 256, gettext(
5060                                             "invalid user %s"), curr);
5061                                         allow_usage(un, B_TRUE, errbuf);
5062                                 }
5063                         } else if (opts->group) {
5064                                 who_type = ZFS_DELEG_GROUP;
5065                                 if (*endch != '\0')
5066                                         g = getgrnam(curr);
5067                                 else
5068                                         g = getgrgid(rid);
5069
5070                                 if (g != NULL)
5071                                         rid = g->gr_gid;
5072                                 else {
5073                                         (void) snprintf(errbuf, 256, gettext(
5074                                             "invalid group %s"),  curr);
5075                                         allow_usage(un, B_TRUE, errbuf);
5076                                 }
5077                         } else {
5078                                 if (*endch != '\0') {
5079                                         p = getpwnam(curr);
5080                                 } else {
5081                                         p = getpwuid(rid);
5082                                 }
5083
5084                                 if (p == NULL)
5085                                         if (*endch != '\0') {
5086                                                 g = getgrnam(curr);
5087                                         } else {
5088                                                 g = getgrgid(rid);
5089                                         }
5090
5091                                 if (p != NULL) {
5092                                         who_type = ZFS_DELEG_USER;
5093                                         rid = p->pw_uid;
5094                                 } else if (g != NULL) {
5095                                         who_type = ZFS_DELEG_GROUP;
5096                                         rid = g->gr_gid;
5097                                 } else {
5098                                         (void) snprintf(errbuf, 256, gettext(
5099                                             "invalid user/group %s"), curr);
5100                                         allow_usage(un, B_TRUE, errbuf);
5101                                 }
5102                         }
5103
5104                         (void) sprintf(id, "%u", rid);
5105                         who = id;
5106
5107                         store_allow_perm(who_type, opts->local,
5108                             opts->descend, who, opts->perms, *nvlp);
5109                         curr = delim + 1;
5110                 }
5111         }
5112
5113         return (0);
5114 }
5115
5116 static void
5117 print_set_creat_perms(uu_avl_t *who_avl)
5118 {
5119         const char *sc_title[] = {
5120                 gettext("Permission sets:\n"),
5121                 gettext("Create time permissions:\n"),
5122                 NULL
5123         };
5124         const char **title_ptr = sc_title;
5125         who_perm_node_t *who_node = NULL;
5126         int prev_weight = -1;
5127
5128         for (who_node = uu_avl_first(who_avl); who_node != NULL;
5129             who_node = uu_avl_next(who_avl, who_node)) {
5130                 uu_avl_t *avl = who_node->who_perm.who_deleg_perm_avl;
5131                 zfs_deleg_who_type_t who_type = who_node->who_perm.who_type;
5132                 const char *who_name = who_node->who_perm.who_name;
5133                 int weight = who_type2weight(who_type);
5134                 boolean_t first = B_TRUE;
5135                 deleg_perm_node_t *deleg_node;
5136
5137                 if (prev_weight != weight) {
5138                         (void) printf(*title_ptr++);
5139                         prev_weight = weight;
5140                 }
5141
5142                 if (who_name == NULL || strnlen(who_name, 1) == 0)
5143                         (void) printf("\t");
5144                 else
5145                         (void) printf("\t%s ", who_name);
5146
5147                 for (deleg_node = uu_avl_first(avl); deleg_node != NULL;
5148                     deleg_node = uu_avl_next(avl, deleg_node)) {
5149                         if (first) {
5150                                 (void) printf("%s",
5151                                     deleg_node->dpn_perm.dp_name);
5152                                 first = B_FALSE;
5153                         } else
5154                                 (void) printf(",%s",
5155                                     deleg_node->dpn_perm.dp_name);
5156                 }
5157
5158                 (void) printf("\n");
5159         }
5160 }
5161
5162 static void inline
5163 print_uge_deleg_perms(uu_avl_t *who_avl, boolean_t local, boolean_t descend,
5164     const char *title)
5165 {
5166         who_perm_node_t *who_node = NULL;
5167         boolean_t prt_title = B_TRUE;
5168         uu_avl_walk_t *walk;
5169
5170         if ((walk = uu_avl_walk_start(who_avl, UU_WALK_ROBUST)) == NULL)
5171                 nomem();
5172
5173         while ((who_node = uu_avl_walk_next(walk)) != NULL) {
5174                 const char *who_name = who_node->who_perm.who_name;
5175                 const char *nice_who_name = who_node->who_perm.who_ug_name;
5176                 uu_avl_t *avl = who_node->who_perm.who_deleg_perm_avl;
5177                 zfs_deleg_who_type_t who_type = who_node->who_perm.who_type;
5178                 char delim = ' ';
5179                 deleg_perm_node_t *deleg_node;
5180                 boolean_t prt_who = B_TRUE;
5181
5182                 for (deleg_node = uu_avl_first(avl);
5183                     deleg_node != NULL;
5184                     deleg_node = uu_avl_next(avl, deleg_node)) {
5185                         if (local != deleg_node->dpn_perm.dp_local ||
5186                             descend != deleg_node->dpn_perm.dp_descend)
5187                                 continue;
5188
5189                         if (prt_who) {
5190                                 const char *who = NULL;
5191                                 if (prt_title) {
5192                                         prt_title = B_FALSE;
5193                                         (void) printf(title);
5194                                 }
5195
5196                                 switch (who_type) {
5197                                 case ZFS_DELEG_USER_SETS:
5198                                 case ZFS_DELEG_USER:
5199                                         who = gettext("user");
5200                                         if (nice_who_name)
5201                                                 who_name  = nice_who_name;
5202                                         break;
5203                                 case ZFS_DELEG_GROUP_SETS:
5204                                 case ZFS_DELEG_GROUP:
5205                                         who = gettext("group");
5206                                         if (nice_who_name)
5207                                                 who_name  = nice_who_name;
5208                                         break;
5209                                 case ZFS_DELEG_EVERYONE_SETS:
5210                                 case ZFS_DELEG_EVERYONE:
5211                                         who = gettext("everyone");
5212                                         who_name = NULL;
5213                                 }
5214
5215                                 prt_who = B_FALSE;
5216                                 if (who_name == NULL)
5217                                         (void) printf("\t%s", who);
5218                                 else
5219                                         (void) printf("\t%s %s", who, who_name);
5220                         }
5221
5222                         (void) printf("%c%s", delim,
5223                             deleg_node->dpn_perm.dp_name);
5224                         delim = ',';
5225                 }
5226
5227                 if (!prt_who)
5228                         (void) printf("\n");
5229         }
5230
5231         uu_avl_walk_end(walk);
5232 }
5233
5234 static void
5235 print_fs_perms(fs_perm_set_t *fspset)
5236 {
5237         fs_perm_node_t *node = NULL;
5238         char buf[ZFS_MAXNAMELEN+32];
5239         const char *dsname = buf;
5240
5241         for (node = uu_list_first(fspset->fsps_list); node != NULL;
5242             node = uu_list_next(fspset->fsps_list, node)) {
5243                 uu_avl_t *sc_avl = node->fspn_fsperm.fsp_sc_avl;
5244                 uu_avl_t *uge_avl = node->fspn_fsperm.fsp_uge_avl;
5245                 int left = 0;
5246
5247                 (void) snprintf(buf, ZFS_MAXNAMELEN+32,
5248                     gettext("---- Permissions on %s "),
5249                     node->fspn_fsperm.fsp_name);
5250                 (void) printf(dsname);
5251                 left = 70 - strlen(buf);
5252                 while (left-- > 0)
5253                         (void) printf("-");
5254                 (void) printf("\n");
5255
5256                 print_set_creat_perms(sc_avl);
5257                 print_uge_deleg_perms(uge_avl, B_TRUE, B_FALSE,
5258                     gettext("Local permissions:\n"));
5259                 print_uge_deleg_perms(uge_avl, B_FALSE, B_TRUE,
5260                     gettext("Descendent permissions:\n"));
5261                 print_uge_deleg_perms(uge_avl, B_TRUE, B_TRUE,
5262                     gettext("Local+Descendent permissions:\n"));
5263         }
5264 }
5265
5266 static fs_perm_set_t fs_perm_set = { NULL, NULL, NULL, NULL };
5267
5268 struct deleg_perms {
5269         boolean_t un;
5270         nvlist_t *nvl;
5271 };
5272
5273 static int
5274 set_deleg_perms(zfs_handle_t *zhp, void *data)
5275 {
5276         struct deleg_perms *perms = (struct deleg_perms *)data;
5277         zfs_type_t zfs_type = zfs_get_type(zhp);
5278
5279         if (zfs_type != ZFS_TYPE_FILESYSTEM && zfs_type != ZFS_TYPE_VOLUME)
5280                 return (0);
5281
5282         return (zfs_set_fsacl(zhp, perms->un, perms->nvl));
5283 }
5284
5285 static int
5286 zfs_do_allow_unallow_impl(int argc, char **argv, boolean_t un)
5287 {
5288         zfs_handle_t *zhp;
5289         nvlist_t *perm_nvl = NULL;
5290         nvlist_t *update_perm_nvl = NULL;
5291         int error = 1;
5292         int c;
5293         struct allow_opts opts = { 0 };
5294
5295         const char *optstr = un ? "ldugecsrh" : "ldugecsh";
5296
5297         /* check opts */
5298         while ((c = getopt(argc, argv, optstr)) != -1) {
5299                 switch (c) {
5300                 case 'l':
5301                         opts.local = B_TRUE;
5302                         break;
5303                 case 'd':
5304                         opts.descend = B_TRUE;
5305                         break;
5306                 case 'u':
5307                         opts.user = B_TRUE;
5308                         break;
5309                 case 'g':
5310                         opts.group = B_TRUE;
5311                         break;
5312                 case 'e':
5313                         opts.everyone = B_TRUE;
5314                         break;
5315                 case 's':
5316                         opts.set = B_TRUE;
5317                         break;
5318                 case 'c':
5319                         opts.create = B_TRUE;
5320                         break;
5321                 case 'r':
5322                         opts.recursive = B_TRUE;
5323                         break;
5324                 case ':':
5325                         (void) fprintf(stderr, gettext("missing argument for "
5326                             "'%c' option\n"), optopt);
5327                         usage(B_FALSE);
5328                         break;
5329                 case 'h':
5330                         opts.prt_usage = B_TRUE;
5331                         break;
5332                 case '?':
5333                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5334                             optopt);
5335                         usage(B_FALSE);
5336                 }
5337         }
5338
5339         argc -= optind;
5340         argv += optind;
5341
5342         /* check arguments */
5343         parse_allow_args(argc, argv, un, &opts);
5344
5345         /* try to open the dataset */
5346         if ((zhp = zfs_open(g_zfs, opts.dataset, ZFS_TYPE_FILESYSTEM |
5347             ZFS_TYPE_VOLUME)) == NULL) {
5348                 (void) fprintf(stderr, "Failed to open dataset: %s\n",
5349                     opts.dataset);
5350                 return (-1);
5351         }
5352
5353         if (zfs_get_fsacl(zhp, &perm_nvl) != 0)
5354                 goto cleanup2;
5355
5356         fs_perm_set_init(&fs_perm_set);
5357         if (parse_fs_perm_set(&fs_perm_set, perm_nvl) != 0) {
5358                 (void) fprintf(stderr, "Failed to parse fsacl permissions\n");
5359                 goto cleanup1;
5360         }
5361
5362         if (opts.prt_perms)
5363                 print_fs_perms(&fs_perm_set);
5364         else {
5365                 (void) construct_fsacl_list(un, &opts, &update_perm_nvl);
5366                 if (zfs_set_fsacl(zhp, un, update_perm_nvl) != 0)
5367                         goto cleanup0;
5368
5369                 if (un && opts.recursive) {
5370                         struct deleg_perms data = { un, update_perm_nvl };
5371                         if (zfs_iter_filesystems(zhp, set_deleg_perms,
5372                             &data) != 0)
5373                                 goto cleanup0;
5374                 }
5375         }
5376
5377         error = 0;
5378
5379 cleanup0:
5380         nvlist_free(perm_nvl);
5381         if (update_perm_nvl != NULL)
5382                 nvlist_free(update_perm_nvl);
5383 cleanup1:
5384         fs_perm_set_fini(&fs_perm_set);
5385 cleanup2:
5386         zfs_close(zhp);
5387
5388         return (error);
5389 }
5390
5391 static int
5392 zfs_do_allow(int argc, char **argv)
5393 {
5394         return (zfs_do_allow_unallow_impl(argc, argv, B_FALSE));
5395 }
5396
5397 static int
5398 zfs_do_unallow(int argc, char **argv)
5399 {
5400         return (zfs_do_allow_unallow_impl(argc, argv, B_TRUE));
5401 }
5402
5403 static int
5404 zfs_do_hold_rele_impl(int argc, char **argv, boolean_t holding)
5405 {
5406         int errors = 0;
5407         int i;
5408         const char *tag;
5409         boolean_t recursive = B_FALSE;
5410         const char *opts = holding ? "rt" : "r";
5411         int c;
5412
5413         /* check options */
5414         while ((c = getopt(argc, argv, opts)) != -1) {
5415                 switch (c) {
5416                 case 'r':
5417                         recursive = B_TRUE;
5418                         break;
5419                 case '?':
5420                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5421                             optopt);
5422                         usage(B_FALSE);
5423                 }
5424         }
5425
5426         argc -= optind;
5427         argv += optind;
5428
5429         /* check number of arguments */
5430         if (argc < 2)
5431                 usage(B_FALSE);
5432
5433         tag = argv[0];
5434         --argc;
5435         ++argv;
5436
5437         if (holding && tag[0] == '.') {
5438                 /* tags starting with '.' are reserved for libzfs */
5439                 (void) fprintf(stderr, gettext("tag may not start with '.'\n"));
5440                 usage(B_FALSE);
5441         }
5442
5443         for (i = 0; i < argc; ++i) {
5444                 zfs_handle_t *zhp;
5445                 char parent[ZFS_MAXNAMELEN];
5446                 const char *delim;
5447                 char *path = argv[i];
5448
5449                 delim = strchr(path, '@');
5450                 if (delim == NULL) {
5451                         (void) fprintf(stderr,
5452                             gettext("'%s' is not a snapshot\n"), path);
5453                         ++errors;
5454                         continue;
5455                 }
5456                 (void) strncpy(parent, path, delim - path);
5457                 parent[delim - path] = '\0';
5458
5459                 zhp = zfs_open(g_zfs, parent,
5460                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
5461                 if (zhp == NULL) {
5462                         ++errors;
5463                         continue;
5464                 }
5465                 if (holding) {
5466                         if (zfs_hold(zhp, delim+1, tag, recursive, -1) != 0)
5467                                 ++errors;
5468                 } else {
5469                         if (zfs_release(zhp, delim+1, tag, recursive) != 0)
5470                                 ++errors;
5471                 }
5472                 zfs_close(zhp);
5473         }
5474
5475         return (errors != 0);
5476 }
5477
5478 /*
5479  * zfs hold [-r] [-t] <tag> <snap> ...
5480  *
5481  *      -r      Recursively hold
5482  *
5483  * Apply a user-hold with the given tag to the list of snapshots.
5484  */
5485 static int
5486 zfs_do_hold(int argc, char **argv)
5487 {
5488         return (zfs_do_hold_rele_impl(argc, argv, B_TRUE));
5489 }
5490
5491 /*
5492  * zfs release [-r] <tag> <snap> ...
5493  *
5494  *      -r      Recursively release
5495  *
5496  * Release a user-hold with the given tag from the list of snapshots.
5497  */
5498 static int
5499 zfs_do_release(int argc, char **argv)
5500 {
5501         return (zfs_do_hold_rele_impl(argc, argv, B_FALSE));
5502 }
5503
5504 typedef struct holds_cbdata {
5505         boolean_t       cb_recursive;
5506         const char      *cb_snapname;
5507         nvlist_t        **cb_nvlp;
5508         size_t          cb_max_namelen;
5509         size_t          cb_max_taglen;
5510 } holds_cbdata_t;
5511
5512 #define STRFTIME_FMT_STR "%a %b %e %k:%M %Y"
5513 #define DATETIME_BUF_LEN (32)
5514 /*
5515  *
5516  */
5517 static void
5518 print_holds(boolean_t scripted, size_t nwidth, size_t tagwidth, nvlist_t *nvl)
5519 {
5520         int i;
5521         nvpair_t *nvp = NULL;
5522         char *hdr_cols[] = { "NAME", "TAG", "TIMESTAMP" };
5523         const char *col;
5524
5525         if (!scripted) {
5526                 for (i = 0; i < 3; i++) {
5527                         col = gettext(hdr_cols[i]);
5528                         if (i < 2)
5529                                 (void) printf("%-*s  ", i ? tagwidth : nwidth,
5530                                     col);
5531                         else
5532                                 (void) printf("%s\n", col);
5533                 }
5534         }
5535
5536         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
5537                 char *zname = nvpair_name(nvp);
5538                 nvlist_t *nvl2;
5539                 nvpair_t *nvp2 = NULL;
5540                 (void) nvpair_value_nvlist(nvp, &nvl2);
5541                 while ((nvp2 = nvlist_next_nvpair(nvl2, nvp2)) != NULL) {
5542                         char tsbuf[DATETIME_BUF_LEN];
5543                         char *tagname = nvpair_name(nvp2);
5544                         uint64_t val = 0;
5545                         time_t time;
5546                         struct tm t;
5547                         char sep = scripted ? '\t' : ' ';
5548                         size_t sepnum = scripted ? 1 : 2;
5549
5550                         (void) nvpair_value_uint64(nvp2, &val);
5551                         time = (time_t)val;
5552                         (void) localtime_r(&time, &t);
5553                         (void) strftime(tsbuf, DATETIME_BUF_LEN,
5554                             gettext(STRFTIME_FMT_STR), &t);
5555
5556                         (void) printf("%-*s%*c%-*s%*c%s\n", nwidth, zname,
5557                             sepnum, sep, tagwidth, tagname, sepnum, sep, tsbuf);
5558                 }
5559         }
5560 }
5561
5562 /*
5563  * Generic callback function to list a dataset or snapshot.
5564  */
5565 static int
5566 holds_callback(zfs_handle_t *zhp, void *data)
5567 {
5568         holds_cbdata_t *cbp = data;
5569         nvlist_t *top_nvl = *cbp->cb_nvlp;
5570         nvlist_t *nvl = NULL;
5571         nvpair_t *nvp = NULL;
5572         const char *zname = zfs_get_name(zhp);
5573         size_t znamelen = strnlen(zname, ZFS_MAXNAMELEN);
5574
5575         if (cbp->cb_recursive) {
5576                 const char *snapname;
5577                 char *delim  = strchr(zname, '@');
5578                 if (delim == NULL)
5579                         return (0);
5580
5581                 snapname = delim + 1;
5582                 if (strcmp(cbp->cb_snapname, snapname))
5583                         return (0);
5584         }
5585
5586         if (zfs_get_holds(zhp, &nvl) != 0)
5587                 return (-1);
5588
5589         if (znamelen > cbp->cb_max_namelen)
5590                 cbp->cb_max_namelen  = znamelen;
5591
5592         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
5593                 const char *tag = nvpair_name(nvp);
5594                 size_t taglen = strnlen(tag, MAXNAMELEN);
5595                 if (taglen > cbp->cb_max_taglen)
5596                         cbp->cb_max_taglen  = taglen;
5597         }
5598
5599         return (nvlist_add_nvlist(top_nvl, zname, nvl));
5600 }
5601
5602 /*
5603  * zfs holds [-r] <snap> ...
5604  *
5605  *      -r      Recursively hold
5606  */
5607 static int
5608 zfs_do_holds(int argc, char **argv)
5609 {
5610         int errors = 0;
5611         int c;
5612         int i;
5613         boolean_t scripted = B_FALSE;
5614         boolean_t recursive = B_FALSE;
5615         const char *opts = "rH";
5616         nvlist_t *nvl;
5617
5618         int types = ZFS_TYPE_SNAPSHOT;
5619         holds_cbdata_t cb = { 0 };
5620
5621         int limit = 0;
5622         int ret = 0;
5623         int flags = 0;
5624
5625         /* check options */
5626         while ((c = getopt(argc, argv, opts)) != -1) {
5627                 switch (c) {
5628                 case 'r':
5629                         recursive = B_TRUE;
5630                         break;
5631                 case 'H':
5632                         scripted = B_TRUE;
5633                         break;
5634                 case '?':
5635                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5636                             optopt);
5637                         usage(B_FALSE);
5638                 }
5639         }
5640
5641         if (recursive) {
5642                 types |= ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME;
5643                 flags |= ZFS_ITER_RECURSE;
5644         }
5645
5646         argc -= optind;
5647         argv += optind;
5648
5649         /* check number of arguments */
5650         if (argc < 1)
5651                 usage(B_FALSE);
5652
5653         if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0)
5654                 nomem();
5655
5656         for (i = 0; i < argc; ++i) {
5657                 char *snapshot = argv[i];
5658                 const char *delim;
5659                 const char *snapname;
5660
5661                 delim = strchr(snapshot, '@');
5662                 if (delim == NULL) {
5663                         (void) fprintf(stderr,
5664                             gettext("'%s' is not a snapshot\n"), snapshot);
5665                         ++errors;
5666                         continue;
5667                 }
5668                 snapname = delim + 1;
5669                 if (recursive)
5670                         snapshot[delim - snapshot] = '\0';
5671
5672                 cb.cb_recursive = recursive;
5673                 cb.cb_snapname = snapname;
5674                 cb.cb_nvlp = &nvl;
5675
5676                 /*
5677                  *  1. collect holds data, set format options
5678                  */
5679                 ret = zfs_for_each(argc, argv, flags, types, NULL, NULL, limit,
5680                     holds_callback, &cb);
5681                 if (ret != 0)
5682                         ++errors;
5683         }
5684
5685         /*
5686          *  2. print holds data
5687          */
5688         print_holds(scripted, cb.cb_max_namelen, cb.cb_max_taglen, nvl);
5689
5690         if (nvlist_empty(nvl))
5691                 (void) printf(gettext("no datasets available\n"));
5692
5693         nvlist_free(nvl);
5694
5695         return (0 != errors);
5696 }
5697
5698 #define CHECK_SPINNER 30
5699 #define SPINNER_TIME 3          /* seconds */
5700 #define MOUNT_TIME 5            /* seconds */
5701
5702 static int
5703 get_one_dataset(zfs_handle_t *zhp, void *data)
5704 {
5705         static char *spin[] = { "-", "\\", "|", "/" };
5706         static int spinval = 0;
5707         static int spincheck = 0;
5708         static time_t last_spin_time = (time_t)0;
5709         get_all_cb_t *cbp = data;
5710         zfs_type_t type = zfs_get_type(zhp);
5711
5712         if (cbp->cb_verbose) {
5713                 if (--spincheck < 0) {
5714                         time_t now = time(NULL);
5715                         if (last_spin_time + SPINNER_TIME < now) {
5716                                 update_progress(spin[spinval++ % 4]);
5717                                 last_spin_time = now;
5718                         }
5719                         spincheck = CHECK_SPINNER;
5720                 }
5721         }
5722
5723         /*
5724          * Interate over any nested datasets.
5725          */
5726         if (zfs_iter_filesystems(zhp, get_one_dataset, data) != 0) {
5727                 zfs_close(zhp);
5728                 return (1);
5729         }
5730
5731         /*
5732          * Skip any datasets whose type does not match.
5733          */
5734         if ((type & ZFS_TYPE_FILESYSTEM) == 0) {
5735                 zfs_close(zhp);
5736                 return (0);
5737         }
5738         libzfs_add_handle(cbp, zhp);
5739         assert(cbp->cb_used <= cbp->cb_alloc);
5740
5741         return (0);
5742 }
5743
5744 static void
5745 get_all_datasets(zfs_handle_t ***dslist, size_t *count, boolean_t verbose)
5746 {
5747         get_all_cb_t cb = { 0 };
5748         cb.cb_verbose = verbose;
5749         cb.cb_getone = get_one_dataset;
5750
5751         if (verbose)
5752                 set_progress_header(gettext("Reading ZFS config"));
5753         (void) zfs_iter_root(g_zfs, get_one_dataset, &cb);
5754
5755         *dslist = cb.cb_handles;
5756         *count = cb.cb_used;
5757
5758         if (verbose)
5759                 finish_progress(gettext("done."));
5760 }
5761
5762 /*
5763  * Generic callback for sharing or mounting filesystems.  Because the code is so
5764  * similar, we have a common function with an extra parameter to determine which
5765  * mode we are using.
5766  */
5767 #define OP_SHARE        0x1
5768 #define OP_MOUNT        0x2
5769
5770 /*
5771  * Share or mount a dataset.
5772  */
5773 static int
5774 share_mount_one(zfs_handle_t *zhp, int op, int flags, char *protocol,
5775     boolean_t explicit, const char *options)
5776 {
5777         char mountpoint[ZFS_MAXPROPLEN];
5778         char shareopts[ZFS_MAXPROPLEN];
5779         char smbshareopts[ZFS_MAXPROPLEN];
5780         const char *cmdname = op == OP_SHARE ? "share" : "mount";
5781         struct mnttab mnt;
5782         uint64_t zoned, canmount;
5783         boolean_t shared_nfs, shared_smb;
5784
5785         assert(zfs_get_type(zhp) & ZFS_TYPE_FILESYSTEM);
5786
5787         /*
5788          * Check to make sure we can mount/share this dataset.  If we
5789          * are in the global zone and the filesystem is exported to a
5790          * local zone, or if we are in a local zone and the
5791          * filesystem is not exported, then it is an error.
5792          */
5793         zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED);
5794
5795         if (zoned && getzoneid() == GLOBAL_ZONEID) {
5796                 if (!explicit)
5797                         return (0);
5798
5799                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5800                     "dataset is exported to a local zone\n"), cmdname,
5801                     zfs_get_name(zhp));
5802                 return (1);
5803
5804         } else if (!zoned && getzoneid() != GLOBAL_ZONEID) {
5805                 if (!explicit)
5806                         return (0);
5807
5808                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5809                     "permission denied\n"), cmdname,
5810                     zfs_get_name(zhp));
5811                 return (1);
5812         }
5813
5814         /*
5815          * Ignore any filesystems which don't apply to us. This
5816          * includes those with a legacy mountpoint, or those with
5817          * legacy share options.
5818          */
5819         verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
5820             sizeof (mountpoint), NULL, NULL, 0, B_FALSE) == 0);
5821         verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, shareopts,
5822             sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0);
5823         verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshareopts,
5824             sizeof (smbshareopts), NULL, NULL, 0, B_FALSE) == 0);
5825
5826         if (op == OP_SHARE && strcmp(shareopts, "off") == 0 &&
5827             strcmp(smbshareopts, "off") == 0) {
5828                 if (!explicit)
5829                         return (0);
5830
5831                 (void) fprintf(stderr, gettext("cannot share '%s': "
5832                     "legacy share\n"), zfs_get_name(zhp));
5833                 (void) fprintf(stderr, gettext("to "
5834                     "share this filesystem set "
5835                     "sharenfs property on\n"));
5836                 return (1);
5837         }
5838
5839         /*
5840          * We cannot share or mount legacy filesystems. If the
5841          * shareopts is non-legacy but the mountpoint is legacy, we
5842          * treat it as a legacy share.
5843          */
5844         if (strcmp(mountpoint, "legacy") == 0) {
5845                 if (!explicit)
5846                         return (0);
5847
5848                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5849                     "legacy mountpoint\n"), cmdname, zfs_get_name(zhp));
5850                 (void) fprintf(stderr, gettext("use %s(8) to "
5851                     "%s this filesystem\n"), cmdname, cmdname);
5852                 return (1);
5853         }
5854
5855         if (strcmp(mountpoint, "none") == 0) {
5856                 if (!explicit)
5857                         return (0);
5858
5859                 (void) fprintf(stderr, gettext("cannot %s '%s': no "
5860                     "mountpoint set\n"), cmdname, zfs_get_name(zhp));
5861                 return (1);
5862         }
5863
5864         /*
5865          * canmount     explicit        outcome
5866          * on           no              pass through
5867          * on           yes             pass through
5868          * off          no              return 0
5869          * off          yes             display error, return 1
5870          * noauto       no              return 0
5871          * noauto       yes             pass through
5872          */
5873         canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT);
5874         if (canmount == ZFS_CANMOUNT_OFF) {
5875                 if (!explicit)
5876                         return (0);
5877
5878                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5879                     "'canmount' property is set to 'off'\n"), cmdname,
5880                     zfs_get_name(zhp));
5881                 return (1);
5882         } else if (canmount == ZFS_CANMOUNT_NOAUTO && !explicit) {
5883                 return (0);
5884         }
5885
5886         /*
5887          * If this filesystem is inconsistent and has a receive resume
5888          * token, we can not mount it.
5889          */
5890         if (zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) &&
5891             zfs_prop_get(zhp, ZFS_PROP_RECEIVE_RESUME_TOKEN,
5892             NULL, 0, NULL, NULL, 0, B_TRUE) == 0) {
5893                 if (!explicit)
5894                         return (0);
5895
5896                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5897                     "Contains partially-completed state from "
5898                     "\"zfs receive -r\", which can be resumed with "
5899                     "\"zfs send -t\"\n"),
5900                     cmdname, zfs_get_name(zhp));
5901                 return (1);
5902         }
5903
5904         /*
5905          * At this point, we have verified that the mountpoint and/or
5906          * shareopts are appropriate for auto management. If the
5907          * filesystem is already mounted or shared, return (failing
5908          * for explicit requests); otherwise mount or share the
5909          * filesystem.
5910          */
5911         switch (op) {
5912         case OP_SHARE:
5913
5914                 shared_nfs = zfs_is_shared_nfs(zhp, NULL);
5915                 shared_smb = zfs_is_shared_smb(zhp, NULL);
5916
5917                 if (shared_nfs && shared_smb ||
5918                     (shared_nfs && strcmp(shareopts, "on") == 0 &&
5919                     strcmp(smbshareopts, "off") == 0) ||
5920                     (shared_smb && strcmp(smbshareopts, "on") == 0 &&
5921                     strcmp(shareopts, "off") == 0)) {
5922                         if (!explicit)
5923                                 return (0);
5924
5925                         (void) fprintf(stderr, gettext("cannot share "
5926                             "'%s': filesystem already shared\n"),
5927                             zfs_get_name(zhp));
5928                         return (1);
5929                 }
5930
5931                 if (!zfs_is_mounted(zhp, NULL) &&
5932                     zfs_mount(zhp, NULL, 0) != 0)
5933                         return (1);
5934
5935                 if (protocol == NULL) {
5936                         if (zfs_shareall(zhp) != 0)
5937                                 return (1);
5938                 } else if (strcmp(protocol, "nfs") == 0) {
5939                         if (zfs_share_nfs(zhp))
5940                                 return (1);
5941                 } else if (strcmp(protocol, "smb") == 0) {
5942                         if (zfs_share_smb(zhp))
5943                                 return (1);
5944                 } else {
5945                         (void) fprintf(stderr, gettext("cannot share "
5946                             "'%s': invalid share type '%s' "
5947                             "specified\n"),
5948                             zfs_get_name(zhp), protocol);
5949                         return (1);
5950                 }
5951
5952                 break;
5953
5954         case OP_MOUNT:
5955                 if (options == NULL)
5956                         mnt.mnt_mntopts = "";
5957                 else
5958                         mnt.mnt_mntopts = (char *)options;
5959
5960                 if (!hasmntopt(&mnt, MNTOPT_REMOUNT) &&
5961                     zfs_is_mounted(zhp, NULL)) {
5962                         if (!explicit)
5963                                 return (0);
5964
5965                         (void) fprintf(stderr, gettext("cannot mount "
5966                             "'%s': filesystem already mounted\n"),
5967                             zfs_get_name(zhp));
5968                         return (1);
5969                 }
5970
5971                 if (zfs_mount(zhp, options, flags) != 0)
5972                         return (1);
5973                 break;
5974         }
5975
5976         return (0);
5977 }
5978
5979 /*
5980  * Reports progress in the form "(current/total)".  Not thread-safe.
5981  */
5982 static void
5983 report_mount_progress(int current, int total)
5984 {
5985         static time_t last_progress_time = 0;
5986         time_t now = time(NULL);
5987         char info[32];
5988
5989         /* report 1..n instead of 0..n-1 */
5990         ++current;
5991
5992         /* display header if we're here for the first time */
5993         if (current == 1) {
5994                 set_progress_header(gettext("Mounting ZFS filesystems"));
5995         } else if (current != total && last_progress_time + MOUNT_TIME >= now) {
5996                 /* too soon to report again */
5997                 return;
5998         }
5999
6000         last_progress_time = now;
6001
6002         (void) sprintf(info, "(%d/%d)", current, total);
6003
6004         if (current == total)
6005                 finish_progress(info);
6006         else
6007                 update_progress(info);
6008 }
6009
6010 static void
6011 append_options(char *mntopts, char *newopts)
6012 {
6013         int len = strlen(mntopts);
6014
6015         /* original length plus new string to append plus 1 for the comma */
6016         if (len + 1 + strlen(newopts) >= MNT_LINE_MAX) {
6017                 (void) fprintf(stderr, gettext("the opts argument for "
6018                     "'%c' option is too long (more than %d chars)\n"),
6019                     "-o", MNT_LINE_MAX);
6020                 usage(B_FALSE);
6021         }
6022
6023         if (*mntopts)
6024                 mntopts[len++] = ',';
6025
6026         (void) strcpy(&mntopts[len], newopts);
6027 }
6028
6029 static int
6030 share_mount(int op, int argc, char **argv)
6031 {
6032         int do_all = 0;
6033         boolean_t verbose = B_FALSE;
6034         int c, ret = 0;
6035         char *options = NULL;
6036         int flags = 0;
6037
6038         /* check options */
6039         while ((c = getopt(argc, argv, op == OP_MOUNT ? ":avo:O" : "a"))
6040             != -1) {
6041                 switch (c) {
6042                 case 'a':
6043                         do_all = 1;
6044                         break;
6045                 case 'v':
6046                         verbose = B_TRUE;
6047                         break;
6048                 case 'o':
6049                         if (*optarg == '\0') {
6050                                 (void) fprintf(stderr, gettext("empty mount "
6051                                     "options (-o) specified\n"));
6052                                 usage(B_FALSE);
6053                         }
6054
6055                         if (options == NULL)
6056                                 options = safe_malloc(MNT_LINE_MAX + 1);
6057
6058                         /* option validation is done later */
6059                         append_options(options, optarg);
6060                         break;
6061
6062                 case 'O':
6063                         warnx("no overlay mounts support on FreeBSD, ignoring");
6064                         break;
6065                 case ':':
6066                         (void) fprintf(stderr, gettext("missing argument for "
6067                             "'%c' option\n"), optopt);
6068                         usage(B_FALSE);
6069                         break;
6070                 case '?':
6071                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6072                             optopt);
6073                         usage(B_FALSE);
6074                 }
6075         }
6076
6077         argc -= optind;
6078         argv += optind;
6079
6080         /* check number of arguments */
6081         if (do_all) {
6082                 zfs_handle_t **dslist = NULL;
6083                 size_t i, count = 0;
6084                 char *protocol = NULL;
6085
6086                 if (op == OP_SHARE && argc > 0) {
6087                         if (strcmp(argv[0], "nfs") != 0 &&
6088                             strcmp(argv[0], "smb") != 0) {
6089                                 (void) fprintf(stderr, gettext("share type "
6090                                     "must be 'nfs' or 'smb'\n"));
6091                                 usage(B_FALSE);
6092                         }
6093                         protocol = argv[0];
6094                         argc--;
6095                         argv++;
6096                 }
6097
6098                 if (argc != 0) {
6099                         (void) fprintf(stderr, gettext("too many arguments\n"));
6100                         usage(B_FALSE);
6101                 }
6102
6103                 start_progress_timer();
6104                 get_all_datasets(&dslist, &count, verbose);
6105
6106                 if (count == 0)
6107                         return (0);
6108
6109                 qsort(dslist, count, sizeof (void *), libzfs_dataset_cmp);
6110
6111                 for (i = 0; i < count; i++) {
6112                         if (verbose)
6113                                 report_mount_progress(i, count);
6114
6115                         if (share_mount_one(dslist[i], op, flags, protocol,
6116                             B_FALSE, options) != 0)
6117                                 ret = 1;
6118                         zfs_close(dslist[i]);
6119                 }
6120
6121                 free(dslist);
6122         } else if (argc == 0) {
6123                 struct mnttab entry;
6124
6125                 if ((op == OP_SHARE) || (options != NULL)) {
6126                         (void) fprintf(stderr, gettext("missing filesystem "
6127                             "argument (specify -a for all)\n"));
6128                         usage(B_FALSE);
6129                 }
6130
6131                 /*
6132                  * When mount is given no arguments, go through /etc/mnttab and
6133                  * display any active ZFS mounts.  We hide any snapshots, since
6134                  * they are controlled automatically.
6135                  */
6136                 rewind(mnttab_file);
6137                 while (getmntent(mnttab_file, &entry) == 0) {
6138                         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0 ||
6139                             strchr(entry.mnt_special, '@') != NULL)
6140                                 continue;
6141
6142                         (void) printf("%-30s  %s\n", entry.mnt_special,
6143                             entry.mnt_mountp);
6144                 }
6145
6146         } else {
6147                 zfs_handle_t *zhp;
6148
6149                 if (argc > 1) {
6150                         (void) fprintf(stderr,
6151                             gettext("too many arguments\n"));
6152                         usage(B_FALSE);
6153                 }
6154
6155                 if ((zhp = zfs_open(g_zfs, argv[0],
6156                     ZFS_TYPE_FILESYSTEM)) == NULL) {
6157                         ret = 1;
6158                 } else {
6159                         ret = share_mount_one(zhp, op, flags, NULL, B_TRUE,
6160                             options);
6161                         zfs_close(zhp);
6162                 }
6163         }
6164
6165         return (ret);
6166 }
6167
6168 /*
6169  * zfs mount -a [nfs]
6170  * zfs mount filesystem
6171  *
6172  * Mount all filesystems, or mount the given filesystem.
6173  */
6174 static int
6175 zfs_do_mount(int argc, char **argv)
6176 {
6177         return (share_mount(OP_MOUNT, argc, argv));
6178 }
6179
6180 /*
6181  * zfs share -a [nfs | smb]
6182  * zfs share filesystem
6183  *
6184  * Share all filesystems, or share the given filesystem.
6185  */
6186 static int
6187 zfs_do_share(int argc, char **argv)
6188 {
6189         return (share_mount(OP_SHARE, argc, argv));
6190 }
6191
6192 typedef struct unshare_unmount_node {
6193         zfs_handle_t    *un_zhp;
6194         char            *un_mountp;
6195         uu_avl_node_t   un_avlnode;
6196 } unshare_unmount_node_t;
6197
6198 /* ARGSUSED */
6199 static int
6200 unshare_unmount_compare(const void *larg, const void *rarg, void *unused)
6201 {
6202         const unshare_unmount_node_t *l = larg;
6203         const unshare_unmount_node_t *r = rarg;
6204
6205         return (strcmp(l->un_mountp, r->un_mountp));
6206 }
6207
6208 /*
6209  * Convenience routine used by zfs_do_umount() and manual_unmount().  Given an
6210  * absolute path, find the entry /etc/mnttab, verify that its a ZFS filesystem,
6211  * and unmount it appropriately.
6212  */
6213 static int
6214 unshare_unmount_path(int op, char *path, int flags, boolean_t is_manual)
6215 {
6216         zfs_handle_t *zhp;
6217         int ret = 0;
6218         struct stat64 statbuf;
6219         struct extmnttab entry;
6220         const char *cmdname = (op == OP_SHARE) ? "unshare" : "unmount";
6221         ino_t path_inode;
6222
6223         /*
6224          * Search for the path in /etc/mnttab.  Rather than looking for the
6225          * specific path, which can be fooled by non-standard paths (i.e. ".."
6226          * or "//"), we stat() the path and search for the corresponding
6227          * (major,minor) device pair.
6228          */
6229         if (stat64(path, &statbuf) != 0) {
6230                 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
6231                     cmdname, path, strerror(errno));
6232                 return (1);
6233         }
6234         path_inode = statbuf.st_ino;
6235
6236         /*
6237          * Search for the given (major,minor) pair in the mount table.
6238          */
6239 #ifdef sun
6240         rewind(mnttab_file);
6241         while ((ret = getextmntent(mnttab_file, &entry, 0)) == 0) {
6242                 if (entry.mnt_major == major(statbuf.st_dev) &&
6243                     entry.mnt_minor == minor(statbuf.st_dev))
6244                         break;
6245         }
6246 #else
6247         {
6248                 struct statfs sfs;
6249
6250                 if (statfs(path, &sfs) != 0) {
6251                         (void) fprintf(stderr, "%s: %s\n", path,
6252                             strerror(errno));
6253                         ret = -1;
6254                 }
6255                 statfs2mnttab(&sfs, &entry);
6256         }
6257 #endif
6258         if (ret != 0) {
6259                 if (op == OP_SHARE) {
6260                         (void) fprintf(stderr, gettext("cannot %s '%s': not "
6261                             "currently mounted\n"), cmdname, path);
6262                         return (1);
6263                 }
6264                 (void) fprintf(stderr, gettext("warning: %s not in mnttab\n"),
6265                     path);
6266                 if ((ret = umount2(path, flags)) != 0)
6267                         (void) fprintf(stderr, gettext("%s: %s\n"), path,
6268                             strerror(errno));
6269                 return (ret != 0);
6270         }
6271
6272         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) {
6273                 (void) fprintf(stderr, gettext("cannot %s '%s': not a ZFS "
6274                     "filesystem\n"), cmdname, path);
6275                 return (1);
6276         }
6277
6278         if ((zhp = zfs_open(g_zfs, entry.mnt_special,
6279             ZFS_TYPE_FILESYSTEM)) == NULL)
6280                 return (1);
6281
6282         ret = 1;
6283         if (stat64(entry.mnt_mountp, &statbuf) != 0) {
6284                 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
6285                     cmdname, path, strerror(errno));
6286                 goto out;
6287         } else if (statbuf.st_ino != path_inode) {
6288                 (void) fprintf(stderr, gettext("cannot "
6289                     "%s '%s': not a mountpoint\n"), cmdname, path);
6290                 goto out;
6291         }
6292
6293         if (op == OP_SHARE) {
6294                 char nfs_mnt_prop[ZFS_MAXPROPLEN];
6295                 char smbshare_prop[ZFS_MAXPROPLEN];
6296
6297                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, nfs_mnt_prop,
6298                     sizeof (nfs_mnt_prop), NULL, NULL, 0, B_FALSE) == 0);
6299                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshare_prop,
6300                     sizeof (smbshare_prop), NULL, NULL, 0, B_FALSE) == 0);
6301
6302                 if (strcmp(nfs_mnt_prop, "off") == 0 &&
6303                     strcmp(smbshare_prop, "off") == 0) {
6304                         (void) fprintf(stderr, gettext("cannot unshare "
6305                             "'%s': legacy share\n"), path);
6306 #ifdef illumos
6307                         (void) fprintf(stderr, gettext("use "
6308                             "unshare(1M) to unshare this filesystem\n"));
6309 #endif
6310                 } else if (!zfs_is_shared(zhp)) {
6311                         (void) fprintf(stderr, gettext("cannot unshare '%s': "
6312                             "not currently shared\n"), path);
6313                 } else {
6314                         ret = zfs_unshareall_bypath(zhp, path);
6315                 }
6316         } else {
6317                 char mtpt_prop[ZFS_MAXPROPLEN];
6318
6319                 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mtpt_prop,
6320                     sizeof (mtpt_prop), NULL, NULL, 0, B_FALSE) == 0);
6321
6322                 if (is_manual) {
6323                         ret = zfs_unmount(zhp, NULL, flags);
6324                 } else if (strcmp(mtpt_prop, "legacy") == 0) {
6325                         (void) fprintf(stderr, gettext("cannot unmount "
6326                             "'%s': legacy mountpoint\n"),
6327                             zfs_get_name(zhp));
6328                         (void) fprintf(stderr, gettext("use umount(8) "
6329                             "to unmount this filesystem\n"));
6330                 } else {
6331                         ret = zfs_unmountall(zhp, flags);
6332                 }
6333         }
6334
6335 out:
6336         zfs_close(zhp);
6337
6338         return (ret != 0);
6339 }
6340
6341 /*
6342  * Generic callback for unsharing or unmounting a filesystem.
6343  */
6344 static int
6345 unshare_unmount(int op, int argc, char **argv)
6346 {
6347         int do_all = 0;
6348         int flags = 0;
6349         int ret = 0;
6350         int c;
6351         zfs_handle_t *zhp;
6352         char nfs_mnt_prop[ZFS_MAXPROPLEN];
6353         char sharesmb[ZFS_MAXPROPLEN];
6354
6355         /* check options */
6356         while ((c = getopt(argc, argv, op == OP_SHARE ? "a" : "af")) != -1) {
6357                 switch (c) {
6358                 case 'a':
6359                         do_all = 1;
6360                         break;
6361                 case 'f':
6362                         flags = MS_FORCE;
6363                         break;
6364                 case '?':
6365                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6366                             optopt);
6367                         usage(B_FALSE);
6368                 }
6369         }
6370
6371         argc -= optind;
6372         argv += optind;
6373
6374         if (do_all) {
6375                 /*
6376                  * We could make use of zfs_for_each() to walk all datasets in
6377                  * the system, but this would be very inefficient, especially
6378                  * since we would have to linearly search /etc/mnttab for each
6379                  * one.  Instead, do one pass through /etc/mnttab looking for
6380                  * zfs entries and call zfs_unmount() for each one.
6381                  *
6382                  * Things get a little tricky if the administrator has created
6383                  * mountpoints beneath other ZFS filesystems.  In this case, we
6384                  * have to unmount the deepest filesystems first.  To accomplish
6385                  * this, we place all the mountpoints in an AVL tree sorted by
6386                  * the special type (dataset name), and walk the result in
6387                  * reverse to make sure to get any snapshots first.
6388                  */
6389                 struct mnttab entry;
6390                 uu_avl_pool_t *pool;
6391                 uu_avl_t *tree;
6392                 unshare_unmount_node_t *node;
6393                 uu_avl_index_t idx;
6394                 uu_avl_walk_t *walk;
6395
6396                 if (argc != 0) {
6397                         (void) fprintf(stderr, gettext("too many arguments\n"));
6398                         usage(B_FALSE);
6399                 }
6400
6401                 if (((pool = uu_avl_pool_create("unmount_pool",
6402                     sizeof (unshare_unmount_node_t),
6403                     offsetof(unshare_unmount_node_t, un_avlnode),
6404                     unshare_unmount_compare, UU_DEFAULT)) == NULL) ||
6405                     ((tree = uu_avl_create(pool, NULL, UU_DEFAULT)) == NULL))
6406                         nomem();
6407
6408                 rewind(mnttab_file);
6409                 while (getmntent(mnttab_file, &entry) == 0) {
6410
6411                         /* ignore non-ZFS entries */
6412                         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0)
6413                                 continue;
6414
6415                         /* ignore snapshots */
6416                         if (strchr(entry.mnt_special, '@') != NULL)
6417                                 continue;
6418
6419                         if ((zhp = zfs_open(g_zfs, entry.mnt_special,
6420                             ZFS_TYPE_FILESYSTEM)) == NULL) {
6421                                 ret = 1;
6422                                 continue;
6423                         }
6424
6425                         switch (op) {
6426                         case OP_SHARE:
6427                                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
6428                                     nfs_mnt_prop,
6429                                     sizeof (nfs_mnt_prop),
6430                                     NULL, NULL, 0, B_FALSE) == 0);
6431                                 if (strcmp(nfs_mnt_prop, "off") != 0)
6432                                         break;
6433                                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
6434                                     nfs_mnt_prop,
6435                                     sizeof (nfs_mnt_prop),
6436                                     NULL, NULL, 0, B_FALSE) == 0);
6437                                 if (strcmp(nfs_mnt_prop, "off") == 0)
6438                                         continue;
6439                                 break;
6440                         case OP_MOUNT:
6441                                 /* Ignore legacy mounts */
6442                                 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT,
6443                                     nfs_mnt_prop,
6444                                     sizeof (nfs_mnt_prop),
6445                                     NULL, NULL, 0, B_FALSE) == 0);
6446                                 if (strcmp(nfs_mnt_prop, "legacy") == 0)
6447                                         continue;
6448                                 /* Ignore canmount=noauto mounts */
6449                                 if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) ==
6450                                     ZFS_CANMOUNT_NOAUTO)
6451                                         continue;
6452                         default:
6453                                 break;
6454                         }
6455
6456                         node = safe_malloc(sizeof (unshare_unmount_node_t));
6457                         node->un_zhp = zhp;
6458                         node->un_mountp = safe_strdup(entry.mnt_mountp);
6459
6460                         uu_avl_node_init(node, &node->un_avlnode, pool);
6461
6462                         if (uu_avl_find(tree, node, NULL, &idx) == NULL) {
6463                                 uu_avl_insert(tree, node, idx);
6464                         } else {
6465                                 zfs_close(node->un_zhp);
6466                                 free(node->un_mountp);
6467                                 free(node);
6468                         }
6469                 }
6470
6471                 /*
6472                  * Walk the AVL tree in reverse, unmounting each filesystem and
6473                  * removing it from the AVL tree in the process.
6474                  */
6475                 if ((walk = uu_avl_walk_start(tree,
6476                     UU_WALK_REVERSE | UU_WALK_ROBUST)) == NULL)
6477                         nomem();
6478
6479                 while ((node = uu_avl_walk_next(walk)) != NULL) {
6480                         uu_avl_remove(tree, node);
6481
6482                         switch (op) {
6483                         case OP_SHARE:
6484                                 if (zfs_unshareall_bypath(node->un_zhp,
6485                                     node->un_mountp) != 0)
6486                                         ret = 1;
6487                                 break;
6488
6489                         case OP_MOUNT:
6490                                 if (zfs_unmount(node->un_zhp,
6491                                     node->un_mountp, flags) != 0)
6492                                         ret = 1;
6493                                 break;
6494                         }
6495
6496                         zfs_close(node->un_zhp);
6497                         free(node->un_mountp);
6498                         free(node);
6499                 }
6500
6501                 uu_avl_walk_end(walk);
6502                 uu_avl_destroy(tree);
6503                 uu_avl_pool_destroy(pool);
6504
6505         } else {
6506                 if (argc != 1) {
6507                         if (argc == 0)
6508                                 (void) fprintf(stderr,
6509                                     gettext("missing filesystem argument\n"));
6510                         else
6511                                 (void) fprintf(stderr,
6512                                     gettext("too many arguments\n"));
6513                         usage(B_FALSE);
6514                 }
6515
6516                 /*
6517                  * We have an argument, but it may be a full path or a ZFS
6518                  * filesystem.  Pass full paths off to unmount_path() (shared by
6519                  * manual_unmount), otherwise open the filesystem and pass to
6520                  * zfs_unmount().
6521                  */
6522                 if (argv[0][0] == '/')
6523                         return (unshare_unmount_path(op, argv[0],
6524                             flags, B_FALSE));
6525
6526                 if ((zhp = zfs_open(g_zfs, argv[0],
6527                     ZFS_TYPE_FILESYSTEM)) == NULL)
6528                         return (1);
6529
6530                 verify(zfs_prop_get(zhp, op == OP_SHARE ?
6531                     ZFS_PROP_SHARENFS : ZFS_PROP_MOUNTPOINT,
6532                     nfs_mnt_prop, sizeof (nfs_mnt_prop), NULL,
6533                     NULL, 0, B_FALSE) == 0);
6534
6535                 switch (op) {
6536                 case OP_SHARE:
6537                         verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
6538                             nfs_mnt_prop,
6539                             sizeof (nfs_mnt_prop),
6540                             NULL, NULL, 0, B_FALSE) == 0);
6541                         verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
6542                             sharesmb, sizeof (sharesmb), NULL, NULL,
6543                             0, B_FALSE) == 0);
6544
6545                         if (strcmp(nfs_mnt_prop, "off") == 0 &&
6546                             strcmp(sharesmb, "off") == 0) {
6547                                 (void) fprintf(stderr, gettext("cannot "
6548                                     "unshare '%s': legacy share\n"),
6549                                     zfs_get_name(zhp));
6550 #ifdef illumos
6551                                 (void) fprintf(stderr, gettext("use "
6552                                     "unshare(1M) to unshare this "
6553                                     "filesystem\n"));
6554 #endif
6555                                 ret = 1;
6556                         } else if (!zfs_is_shared(zhp)) {
6557                                 (void) fprintf(stderr, gettext("cannot "
6558                                     "unshare '%s': not currently "
6559                                     "shared\n"), zfs_get_name(zhp));
6560                                 ret = 1;
6561                         } else if (zfs_unshareall(zhp) != 0) {
6562                                 ret = 1;
6563                         }
6564                         break;
6565
6566                 case OP_MOUNT:
6567                         if (strcmp(nfs_mnt_prop, "legacy") == 0) {
6568                                 (void) fprintf(stderr, gettext("cannot "
6569                                     "unmount '%s': legacy "
6570                                     "mountpoint\n"), zfs_get_name(zhp));
6571                                 (void) fprintf(stderr, gettext("use "
6572                                     "umount(8) to unmount this "
6573                                     "filesystem\n"));
6574                                 ret = 1;
6575                         } else if (!zfs_is_mounted(zhp, NULL)) {
6576                                 (void) fprintf(stderr, gettext("cannot "
6577                                     "unmount '%s': not currently "
6578                                     "mounted\n"),
6579                                     zfs_get_name(zhp));
6580                                 ret = 1;
6581                         } else if (zfs_unmountall(zhp, flags) != 0) {
6582                                 ret = 1;
6583                         }
6584                         break;
6585                 }
6586
6587                 zfs_close(zhp);
6588         }
6589
6590         return (ret);
6591 }
6592
6593 /*
6594  * zfs unmount -a
6595  * zfs unmount filesystem
6596  *
6597  * Unmount all filesystems, or a specific ZFS filesystem.
6598  */
6599 static int
6600 zfs_do_unmount(int argc, char **argv)
6601 {
6602         return (unshare_unmount(OP_MOUNT, argc, argv));
6603 }
6604
6605 /*
6606  * zfs unshare -a
6607  * zfs unshare filesystem
6608  *
6609  * Unshare all filesystems, or a specific ZFS filesystem.
6610  */
6611 static int
6612 zfs_do_unshare(int argc, char **argv)
6613 {
6614         return (unshare_unmount(OP_SHARE, argc, argv));
6615 }
6616
6617 /*
6618  * Attach/detach the given dataset to/from the given jail
6619  */
6620 /* ARGSUSED */
6621 static int
6622 do_jail(int argc, char **argv, int attach)
6623 {
6624         zfs_handle_t *zhp;
6625         int jailid, ret;
6626
6627         /* check number of arguments */
6628         if (argc < 3) {
6629                 (void) fprintf(stderr, gettext("missing argument(s)\n"));
6630                 usage(B_FALSE);
6631         }
6632         if (argc > 3) {
6633                 (void) fprintf(stderr, gettext("too many arguments\n"));
6634                 usage(B_FALSE);
6635         }
6636
6637         jailid = jail_getid(argv[1]);
6638         if (jailid < 0) {
6639                 (void) fprintf(stderr, gettext("invalid jail id or name\n"));
6640                 usage(B_FALSE);
6641         }
6642
6643         zhp = zfs_open(g_zfs, argv[2], ZFS_TYPE_FILESYSTEM);
6644         if (zhp == NULL)
6645                 return (1);
6646
6647         ret = (zfs_jail(zhp, jailid, attach) != 0);
6648
6649         zfs_close(zhp);
6650         return (ret);
6651 }
6652
6653 /*
6654  * zfs jail jailid filesystem
6655  *
6656  * Attach the given dataset to the given jail
6657  */
6658 /* ARGSUSED */
6659 static int
6660 zfs_do_jail(int argc, char **argv)
6661 {
6662
6663         return (do_jail(argc, argv, 1));
6664 }
6665
6666 /*
6667  * zfs unjail jailid filesystem
6668  *
6669  * Detach the given dataset from the given jail
6670  */
6671 /* ARGSUSED */
6672 static int
6673 zfs_do_unjail(int argc, char **argv)
6674 {
6675
6676         return (do_jail(argc, argv, 0));
6677 }
6678
6679 /*
6680  * Called when invoked as /etc/fs/zfs/mount.  Do the mount if the mountpoint is
6681  * 'legacy'.  Otherwise, complain that use should be using 'zfs mount'.
6682  */
6683 static int
6684 manual_mount(int argc, char **argv)
6685 {
6686         zfs_handle_t *zhp;
6687         char mountpoint[ZFS_MAXPROPLEN];
6688         char mntopts[MNT_LINE_MAX] = { '\0' };
6689         int ret = 0;
6690         int c;
6691         int flags = 0;
6692         char *dataset, *path;
6693
6694         /* check options */
6695         while ((c = getopt(argc, argv, ":mo:O")) != -1) {
6696                 switch (c) {
6697                 case 'o':
6698                         (void) strlcpy(mntopts, optarg, sizeof (mntopts));
6699                         break;
6700                 case 'O':
6701                         flags |= MS_OVERLAY;
6702                         break;
6703                 case 'm':
6704                         flags |= MS_NOMNTTAB;
6705                         break;
6706                 case ':':
6707                         (void) fprintf(stderr, gettext("missing argument for "
6708                             "'%c' option\n"), optopt);
6709                         usage(B_FALSE);
6710                         break;
6711                 case '?':
6712                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6713                             optopt);
6714                         (void) fprintf(stderr, gettext("usage: mount [-o opts] "
6715                             "<path>\n"));
6716                         return (2);
6717                 }
6718         }
6719
6720         argc -= optind;
6721         argv += optind;
6722
6723         /* check that we only have two arguments */
6724         if (argc != 2) {
6725                 if (argc == 0)
6726                         (void) fprintf(stderr, gettext("missing dataset "
6727                             "argument\n"));
6728                 else if (argc == 1)
6729                         (void) fprintf(stderr,
6730                             gettext("missing mountpoint argument\n"));
6731                 else
6732                         (void) fprintf(stderr, gettext("too many arguments\n"));
6733                 (void) fprintf(stderr, "usage: mount <dataset> <mountpoint>\n");
6734                 return (2);
6735         }
6736
6737         dataset = argv[0];
6738         path = argv[1];
6739
6740         /* try to open the dataset */
6741         if ((zhp = zfs_open(g_zfs, dataset, ZFS_TYPE_FILESYSTEM)) == NULL)
6742                 return (1);
6743
6744         (void) zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
6745             sizeof (mountpoint), NULL, NULL, 0, B_FALSE);
6746
6747         /* check for legacy mountpoint and complain appropriately */
6748         ret = 0;
6749         if (strcmp(mountpoint, ZFS_MOUNTPOINT_LEGACY) == 0) {
6750                 if (zmount(dataset, path, flags, MNTTYPE_ZFS,
6751                     NULL, 0, mntopts, sizeof (mntopts)) != 0) {
6752                         (void) fprintf(stderr, gettext("mount failed: %s\n"),
6753                             strerror(errno));
6754                         ret = 1;
6755                 }
6756         } else {
6757                 (void) fprintf(stderr, gettext("filesystem '%s' cannot be "
6758                     "mounted using 'mount -t zfs'\n"), dataset);
6759                 (void) fprintf(stderr, gettext("Use 'zfs set mountpoint=%s' "
6760                     "instead.\n"), path);
6761                 (void) fprintf(stderr, gettext("If you must use 'mount -t zfs' "
6762                     "or /etc/fstab, use 'zfs set mountpoint=legacy'.\n"));
6763                 (void) fprintf(stderr, gettext("See zfs(8) for more "
6764                     "information.\n"));
6765                 ret = 1;
6766         }
6767
6768         return (ret);
6769 }
6770
6771 /*
6772  * Called when invoked as /etc/fs/zfs/umount.  Unlike a manual mount, we allow
6773  * unmounts of non-legacy filesystems, as this is the dominant administrative
6774  * interface.
6775  */
6776 static int
6777 manual_unmount(int argc, char **argv)
6778 {
6779         int flags = 0;
6780         int c;
6781
6782         /* check options */
6783         while ((c = getopt(argc, argv, "f")) != -1) {
6784                 switch (c) {
6785                 case 'f':
6786                         flags = MS_FORCE;
6787                         break;
6788                 case '?':
6789                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6790                             optopt);
6791                         (void) fprintf(stderr, gettext("usage: unmount [-f] "
6792                             "<path>\n"));
6793                         return (2);
6794                 }
6795         }
6796
6797         argc -= optind;
6798         argv += optind;
6799
6800         /* check arguments */
6801         if (argc != 1) {
6802                 if (argc == 0)
6803                         (void) fprintf(stderr, gettext("missing path "
6804                             "argument\n"));
6805                 else
6806                         (void) fprintf(stderr, gettext("too many arguments\n"));
6807                 (void) fprintf(stderr, gettext("usage: unmount [-f] <path>\n"));
6808                 return (2);
6809         }
6810
6811         return (unshare_unmount_path(OP_MOUNT, argv[0], flags, B_TRUE));
6812 }
6813
6814 static int
6815 find_command_idx(char *command, int *idx)
6816 {
6817         int i;
6818
6819         for (i = 0; i < NCOMMAND; i++) {
6820                 if (command_table[i].name == NULL)
6821                         continue;
6822
6823                 if (strcmp(command, command_table[i].name) == 0) {
6824                         *idx = i;
6825                         return (0);
6826                 }
6827         }
6828         return (1);
6829 }
6830
6831 static int
6832 zfs_do_diff(int argc, char **argv)
6833 {
6834         zfs_handle_t *zhp;
6835         int flags = 0;
6836         char *tosnap = NULL;
6837         char *fromsnap = NULL;
6838         char *atp, *copy;
6839         int err = 0;
6840         int c;
6841
6842         while ((c = getopt(argc, argv, "FHt")) != -1) {
6843                 switch (c) {
6844                 case 'F':
6845                         flags |= ZFS_DIFF_CLASSIFY;
6846                         break;
6847                 case 'H':
6848                         flags |= ZFS_DIFF_PARSEABLE;
6849                         break;
6850                 case 't':
6851                         flags |= ZFS_DIFF_TIMESTAMP;
6852                         break;
6853                 default:
6854                         (void) fprintf(stderr,
6855                             gettext("invalid option '%c'\n"), optopt);
6856                         usage(B_FALSE);
6857                 }
6858         }
6859
6860         argc -= optind;
6861         argv += optind;
6862
6863         if (argc < 1) {
6864                 (void) fprintf(stderr,
6865                 gettext("must provide at least one snapshot name\n"));
6866                 usage(B_FALSE);
6867         }
6868
6869         if (argc > 2) {
6870                 (void) fprintf(stderr, gettext("too many arguments\n"));
6871                 usage(B_FALSE);
6872         }
6873
6874         fromsnap = argv[0];
6875         tosnap = (argc == 2) ? argv[1] : NULL;
6876
6877         copy = NULL;
6878         if (*fromsnap != '@')
6879                 copy = strdup(fromsnap);
6880         else if (tosnap)
6881                 copy = strdup(tosnap);
6882         if (copy == NULL)
6883                 usage(B_FALSE);
6884
6885         if (atp = strchr(copy, '@'))
6886                 *atp = '\0';
6887
6888         if ((zhp = zfs_open(g_zfs, copy, ZFS_TYPE_FILESYSTEM)) == NULL)
6889                 return (1);
6890
6891         free(copy);
6892
6893         /*
6894          * Ignore SIGPIPE so that the library can give us
6895          * information on any failure
6896          */
6897         (void) sigignore(SIGPIPE);
6898
6899         err = zfs_show_diffs(zhp, STDOUT_FILENO, fromsnap, tosnap, flags);
6900
6901         zfs_close(zhp);
6902
6903         return (err != 0);
6904 }
6905
6906 /*
6907  * zfs bookmark <fs@snap> <fs#bmark>
6908  *
6909  * Creates a bookmark with the given name from the given snapshot.
6910  */
6911 static int
6912 zfs_do_bookmark(int argc, char **argv)
6913 {
6914         char snapname[ZFS_MAXNAMELEN];
6915         zfs_handle_t *zhp;
6916         nvlist_t *nvl;
6917         int ret = 0;
6918         int c;
6919
6920         /* check options */
6921         while ((c = getopt(argc, argv, "")) != -1) {
6922                 switch (c) {
6923                 case '?':
6924                         (void) fprintf(stderr,
6925                             gettext("invalid option '%c'\n"), optopt);
6926                         goto usage;
6927                 }
6928         }
6929
6930         argc -= optind;
6931         argv += optind;
6932
6933         /* check number of arguments */
6934         if (argc < 1) {
6935                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
6936                 goto usage;
6937         }
6938         if (argc < 2) {
6939                 (void) fprintf(stderr, gettext("missing bookmark argument\n"));
6940                 goto usage;
6941         }
6942
6943         if (strchr(argv[1], '#') == NULL) {
6944                 (void) fprintf(stderr,
6945                     gettext("invalid bookmark name '%s' -- "
6946                     "must contain a '#'\n"), argv[1]);
6947                 goto usage;
6948         }
6949
6950         if (argv[0][0] == '@') {
6951                 /*
6952                  * Snapshot name begins with @.
6953                  * Default to same fs as bookmark.
6954                  */
6955                 (void) strncpy(snapname, argv[1], sizeof (snapname));
6956                 *strchr(snapname, '#') = '\0';
6957                 (void) strlcat(snapname, argv[0], sizeof (snapname));
6958         } else {
6959                 (void) strncpy(snapname, argv[0], sizeof (snapname));
6960         }
6961         zhp = zfs_open(g_zfs, snapname, ZFS_TYPE_SNAPSHOT);
6962         if (zhp == NULL)
6963                 goto usage;
6964         zfs_close(zhp);
6965
6966
6967         nvl = fnvlist_alloc();
6968         fnvlist_add_string(nvl, argv[1], snapname);
6969         ret = lzc_bookmark(nvl, NULL);
6970         fnvlist_free(nvl);
6971
6972         if (ret != 0) {
6973                 const char *err_msg;
6974                 char errbuf[1024];
6975
6976                 (void) snprintf(errbuf, sizeof (errbuf),
6977                     dgettext(TEXT_DOMAIN,
6978                     "cannot create bookmark '%s'"), argv[1]);
6979
6980                 switch (ret) {
6981                 case EXDEV:
6982                         err_msg = "bookmark is in a different pool";
6983                         break;
6984                 case EEXIST:
6985                         err_msg = "bookmark exists";
6986                         break;
6987                 case EINVAL:
6988                         err_msg = "invalid argument";
6989                         break;
6990                 case ENOTSUP:
6991                         err_msg = "bookmark feature not enabled";
6992                         break;
6993                 case ENOSPC:
6994                         err_msg = "out of space";
6995                         break;
6996                 default:
6997                         err_msg = "unknown error";
6998                         break;
6999                 }
7000                 (void) fprintf(stderr, "%s: %s\n", errbuf,
7001                     dgettext(TEXT_DOMAIN, err_msg));
7002         }
7003
7004         return (ret != 0);
7005
7006 usage:
7007         usage(B_FALSE);
7008         return (-1);
7009 }
7010
7011 int
7012 main(int argc, char **argv)
7013 {
7014         int ret = 0;
7015         int i;
7016         char *progname;
7017         char *cmdname;
7018
7019         (void) setlocale(LC_ALL, "");
7020         (void) textdomain(TEXT_DOMAIN);
7021
7022         opterr = 0;
7023
7024         if ((g_zfs = libzfs_init()) == NULL) {
7025                 (void) fprintf(stderr, gettext("internal error: failed to "
7026                     "initialize ZFS library\n"));
7027                 return (1);
7028         }
7029
7030         zfs_save_arguments(argc, argv, history_str, sizeof (history_str));
7031
7032         libzfs_print_on_error(g_zfs, B_TRUE);
7033
7034         if ((mnttab_file = fopen(MNTTAB, "r")) == NULL) {
7035                 (void) fprintf(stderr, gettext("internal error: unable to "
7036                     "open %s\n"), MNTTAB);
7037                 return (1);
7038         }
7039
7040         /*
7041          * This command also doubles as the /etc/fs mount and unmount program.
7042          * Determine if we should take this behavior based on argv[0].
7043          */
7044         progname = basename(argv[0]);
7045         if (strcmp(progname, "mount") == 0) {
7046                 ret = manual_mount(argc, argv);
7047         } else if (strcmp(progname, "umount") == 0) {
7048                 ret = manual_unmount(argc, argv);
7049         } else {
7050                 /*
7051                  * Make sure the user has specified some command.
7052                  */
7053                 if (argc < 2) {
7054                         (void) fprintf(stderr, gettext("missing command\n"));
7055                         usage(B_FALSE);
7056                 }
7057
7058                 cmdname = argv[1];
7059
7060                 /*
7061                  * The 'umount' command is an alias for 'unmount'
7062                  */
7063                 if (strcmp(cmdname, "umount") == 0)
7064                         cmdname = "unmount";
7065
7066                 /*
7067                  * The 'recv' command is an alias for 'receive'
7068                  */
7069                 if (strcmp(cmdname, "recv") == 0)
7070                         cmdname = "receive";
7071
7072                 /*
7073                  * The 'snap' command is an alias for 'snapshot'
7074                  */
7075                 if (strcmp(cmdname, "snap") == 0)
7076                         cmdname = "snapshot";
7077
7078                 /*
7079                  * Special case '-?'
7080                  */
7081                 if (strcmp(cmdname, "-?") == 0)
7082                         usage(B_TRUE);
7083
7084                 /*
7085                  * Run the appropriate command.
7086                  */
7087                 libzfs_mnttab_cache(g_zfs, B_TRUE);
7088                 if (find_command_idx(cmdname, &i) == 0) {
7089                         current_command = &command_table[i];
7090                         ret = command_table[i].func(argc - 1, argv + 1);
7091                 } else if (strchr(cmdname, '=') != NULL) {
7092                         verify(find_command_idx("set", &i) == 0);
7093                         current_command = &command_table[i];
7094                         ret = command_table[i].func(argc, argv);
7095                 } else {
7096                         (void) fprintf(stderr, gettext("unrecognized "
7097                             "command '%s'\n"), cmdname);
7098                         usage(B_FALSE);
7099                 }
7100                 libzfs_mnttab_cache(g_zfs, B_FALSE);
7101         }
7102
7103         (void) fclose(mnttab_file);
7104
7105         if (ret == 0 && log_history)
7106                 (void) zpool_log_history(g_zfs, history_str);
7107
7108         libzfs_fini(g_zfs);
7109
7110         /*
7111          * The 'ZFS_ABORT' environment variable causes us to dump core on exit
7112          * for the purposes of running ::findleaks.
7113          */
7114         if (getenv("ZFS_ABORT") != NULL) {
7115                 (void) printf("dumping core by request\n");
7116                 abort();
7117         }
7118
7119         return (ret);
7120 }