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 /*
 502  * Take a property=value argument string and add it to the given nvlist.
 503  * Modifies the argument inplace.
 504  */
 505 static int
 506 parseprop(nvlist_t *props, char *propname)
 507 {
 508         char *propval, *strval;
 509
 510         if ((propval = strchr(propname, '=')) == NULL) {
 511                 (void) fprintf(stderr, gettext("missing "
 512                     "'=' for property=value argument\n"));
 513                 return (-1);
 514         }
 515         *propval = '\0';
 516         propval++;
 517         if (nvlist_lookup_string(props, propname, &strval) == 0) {
 518                 (void) fprintf(stderr, gettext("property '%s' "
 519                     "specified multiple times\n"), propname);
 520                 return (-1);
 521         }
 522         if (nvlist_add_string(props, propname, propval) != 0)
 523                 nomem();
 524         return (0);
 525 }
 526
 527 static int
 528 parse_depth(char *opt, int *flags)
 529 {
 530         char *tmp;
 531         int depth;
 532
 533         depth = (int)strtol(opt, &tmp, 0);
 534         if (*tmp) {
 535                 (void) fprintf(stderr,
 536                     gettext("%s is not an integer\n"), opt);
 537                 usage(B_FALSE);
 538         }
 539         if (depth < 0) {
 540                 (void) fprintf(stderr,
 541                     gettext("Depth can not be negative.\n"));
 542                 usage(B_FALSE);
 543         }
 544         *flags |= (ZFS_ITER_DEPTH_LIMIT|ZFS_ITER_RECURSE);
 545         return (depth);
 546 }
 547
 548 #define PROGRESS_DELAY 2                /* seconds */
 549
 550 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";
 551 static time_t pt_begin;
 552 static char *pt_header = NULL;
 553 static boolean_t pt_shown;
 554
 555 static void
 556 start_progress_timer(void)
 557 {
 558         pt_begin = time(NULL) + PROGRESS_DELAY;
 559         pt_shown = B_FALSE;
 560 }
 561
 562 static void
 563 set_progress_header(char *header)
 564 {
 565         assert(pt_header == NULL);
 566         pt_header = safe_strdup(header);
 567         if (pt_shown) {
 568                 (void) printf("%s: ", header);
 569                 (void) fflush(stdout);
 570         }
 571 }
 572
 573 static void
 574 update_progress(char *update)
 575 {
 576         if (!pt_shown && time(NULL) > pt_begin) {
 577                 int len = strlen(update);
 578
 579                 (void) printf("%s: %s%*.*s", pt_header, update, len, len,
 580                     pt_reverse);
 581                 (void) fflush(stdout);
 582                 pt_shown = B_TRUE;
 583         } else if (pt_shown) {
 584                 int len = strlen(update);
 585
 586                 (void) printf("%s%*.*s", update, len, len, pt_reverse);
 587                 (void) fflush(stdout);
 588         }
 589 }
 590
 591 static void
 592 finish_progress(char *done)
 593 {
 594         if (pt_shown) {
 595                 (void) printf("%s\n", done);
 596                 (void) fflush(stdout);
 597         }
 598         free(pt_header);
 599         pt_header = NULL;
 600 }
 601
 602 /*
 603  * Check if the dataset is mountable and should be automatically mounted.
 604  */
 605 static boolean_t
 606 should_auto_mount(zfs_handle_t *zhp)
 607 {
 608         if (!zfs_prop_valid_for_type(ZFS_PROP_CANMOUNT, zfs_get_type(zhp)))
 609                 return (B_FALSE);
 610         return (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) == ZFS_CANMOUNT_ON);
 611 }
 612
 613 /*
 614  * zfs clone [-p] [-o prop=value] ... <snap> <fs | vol>
 615  *
 616  * Given an existing dataset, create a writable copy whose initial contents
 617  * are the same as the source.  The newly created dataset maintains a
 618  * dependency on the original; the original cannot be destroyed so long as
 619  * the clone exists.
 620  *
 621  * The '-p' flag creates all the non-existing ancestors of the target first.
 622  */
 623 static int
 624 zfs_do_clone(int argc, char **argv)
 625 {
 626         zfs_handle_t *zhp = NULL;
 627         boolean_t parents = B_FALSE;
 628         nvlist_t *props;
 629         int ret = 0;
 630         int c;
 631
 632         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
 633                 nomem();
 634
 635         /* check options */
 636         while ((c = getopt(argc, argv, "o:p")) != -1) {
 637                 switch (c) {
 638                 case 'o':
 639                         if (parseprop(props, optarg) != 0)
 640                                 return (1);
 641                         break;
 642                 case 'p':
 643                         parents = B_TRUE;
 644                         break;
 645                 case '?':
 646                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
 647                             optopt);
 648                         goto usage;
 649                 }
 650         }
 651
 652         argc -= optind;
 653         argv += optind;
 654
 655         /* check number of arguments */
 656         if (argc < 1) {
 657                 (void) fprintf(stderr, gettext("missing source dataset "
 658                     "argument\n"));
 659                 goto usage;
 660         }
 661         if (argc < 2) {
 662                 (void) fprintf(stderr, gettext("missing target dataset "
 663                     "argument\n"));
 664                 goto usage;
 665         }
 666         if (argc > 2) {
 667                 (void) fprintf(stderr, gettext("too many arguments\n"));
 668                 goto usage;
 669         }
 670
 671         /* open the source dataset */
 672         if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
 673                 return (1);
 674
 675         if (parents && zfs_name_valid(argv[1], ZFS_TYPE_FILESYSTEM |
 676             ZFS_TYPE_VOLUME)) {
 677                 /*
 678                  * Now create the ancestors of the target dataset.  If the
 679                  * target already exists and '-p' option was used we should not
 680                  * complain.
 681                  */
 682                 if (zfs_dataset_exists(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM |
 683                     ZFS_TYPE_VOLUME))
 684                         return (0);
 685                 if (zfs_create_ancestors(g_zfs, argv[1]) != 0)
 686                         return (1);
 687         }
 688
 689         /* pass to libzfs */
 690         ret = zfs_clone(zhp, argv[1], props);
 691
 692         /* create the mountpoint if necessary */
 693         if (ret == 0) {
 694                 zfs_handle_t *clone;
 695
 696                 clone = zfs_open(g_zfs, argv[1], ZFS_TYPE_DATASET);
 697                 if (clone != NULL) {
 698                         /*
 699                          * If the user doesn't want the dataset
 700                          * automatically mounted, then skip the mount/share
 701                          * step.
 702                          */
 703                         if (should_auto_mount(clone)) {
 704                                 if ((ret = zfs_mount(clone, NULL, 0)) != 0) {
 705                                         (void) fprintf(stderr, gettext("clone "
 706                                             "successfully created, "
 707                                             "but not mounted\n"));
 708                                 } else if ((ret = zfs_share(clone)) != 0) {
 709                                         (void) fprintf(stderr, gettext("clone "
 710                                             "successfully created, "
 711                                             "but not shared\n"));
 712                                 }
 713                         }
 714                         zfs_close(clone);
 715                 }
 716         }
 717
 718         zfs_close(zhp);
 719         nvlist_free(props);
 720
 721         return (!!ret);
 722
 723 usage:
 724         if (zhp)
 725                 zfs_close(zhp);
 726         nvlist_free(props);
 727         usage(B_FALSE);
 728         return (-1);
 729 }
 730
 731 /*
 732  * zfs create [-pu] [-o prop=value] ... fs
 733  * zfs create [-ps] [-b blocksize] [-o prop=value] ... -V vol size
 734  *
 735  * Create a new dataset.  This command can be used to create filesystems
 736  * and volumes.  Snapshot creation is handled by 'zfs snapshot'.
 737  * For volumes, the user must specify a size to be used.
 738  *
 739  * The '-s' flag applies only to volumes, and indicates that we should not try
 740  * to set the reservation for this volume.  By default we set a reservation
 741  * equal to the size for any volume.  For pools with SPA_VERSION >=
 742  * SPA_VERSION_REFRESERVATION, we set a refreservation instead.
 743  *
 744  * The '-p' flag creates all the non-existing ancestors of the target first.
 745  *
 746  * The '-u' flag prevents mounting of newly created file system.
 747  */
 748 static int
 749 zfs_do_create(int argc, char **argv)
 750 {
 751         zfs_type_t type = ZFS_TYPE_FILESYSTEM;
 752         zfs_handle_t *zhp = NULL;
 753         uint64_t volsize;
 754         int c;
 755         boolean_t noreserve = B_FALSE;
 756         boolean_t bflag = B_FALSE;
 757         boolean_t parents = B_FALSE;
 758         boolean_t nomount = B_FALSE;
 759         int ret = 1;
 760         nvlist_t *props;
 761         uint64_t intval;
 762
 763         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
 764                 nomem();
 765
 766         /* check options */
 767         while ((c = getopt(argc, argv, ":V:b:so:pu")) != -1) {
 768                 switch (c) {
 769                 case 'V':
 770                         type = ZFS_TYPE_VOLUME;
 771                         if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
 772                                 (void) fprintf(stderr, gettext("bad volume "
 773                                     "size '%s': %s\n"), optarg,
 774                                     libzfs_error_description(g_zfs));
 775                                 goto error;
 776                         }
 777
 778                         if (nvlist_add_uint64(props,
 779                             zfs_prop_to_name(ZFS_PROP_VOLSIZE), intval) != 0)
 780                                 nomem();
 781                         volsize = intval;
 782                         break;
 783                 case 'p':
 784                         parents = B_TRUE;
 785                         break;
 786                 case 'b':
 787                         bflag = B_TRUE;
 788                         if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
 789                                 (void) fprintf(stderr, gettext("bad volume "
 790                                     "block size '%s': %s\n"), optarg,
 791                                     libzfs_error_description(g_zfs));
 792                                 goto error;
 793                         }
 794
 795                         if (nvlist_add_uint64(props,
 796                             zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
 797                             intval) != 0)
 798                                 nomem();
 799                         break;
 800                 case 'o':
 801                         if (parseprop(props, optarg) != 0)
 802                                 goto error;
 803                         break;
 804                 case 's':
 805                         noreserve = B_TRUE;
 806                         break;
 807                 case 'u':
 808                         nomount = B_TRUE;
 809                         break;
 810                 case ':':
 811                         (void) fprintf(stderr, gettext("missing size "
 812                             "argument\n"));
 813                         goto badusage;
 814                 case '?':
 815                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
 816                             optopt);
 817                         goto badusage;
 818                 }
 819         }
 820
 821         if ((bflag || noreserve) && type != ZFS_TYPE_VOLUME) {
 822                 (void) fprintf(stderr, gettext("'-s' and '-b' can only be "
 823                     "used when creating a volume\n"));
 824                 goto badusage;
 825         }
 826         if (nomount && type != ZFS_TYPE_FILESYSTEM) {
 827                 (void) fprintf(stderr, gettext("'-u' can only be "
 828                     "used when creating a file system\n"));
 829                 goto badusage;
 830         }
 831
 832         argc -= optind;
 833         argv += optind;
 834
 835         /* check number of arguments */
 836         if (argc == 0) {
 837                 (void) fprintf(stderr, gettext("missing %s argument\n"),
 838                     zfs_type_to_name(type));
 839                 goto badusage;
 840         }
 841         if (argc > 1) {
 842                 (void) fprintf(stderr, gettext("too many arguments\n"));
 843                 goto badusage;
 844         }
 845
 846         if (type == ZFS_TYPE_VOLUME && !noreserve) {
 847                 zpool_handle_t *zpool_handle;
 848                 nvlist_t *real_props;
 849                 uint64_t spa_version;
 850                 char *p;
 851                 zfs_prop_t resv_prop;
 852                 char *strval;
 853                 char msg[1024];
 854
 855                 if (p = strchr(argv[0], '/'))
 856                         *p = '\0';
 857                 zpool_handle = zpool_open(g_zfs, argv[0]);
 858                 if (p != NULL)
 859                         *p = '/';
 860                 if (zpool_handle == NULL)
 861                         goto error;
 862                 spa_version = zpool_get_prop_int(zpool_handle,
 863                     ZPOOL_PROP_VERSION, NULL);
 864                 zpool_close(zpool_handle);
 865                 if (spa_version >= SPA_VERSION_REFRESERVATION)
 866                         resv_prop = ZFS_PROP_REFRESERVATION;
 867                 else
 868                         resv_prop = ZFS_PROP_RESERVATION;
 869
 870                 (void) snprintf(msg, sizeof (msg),
 871                     gettext("cannot create '%s'"), argv[0]);
 872                 if (props && (real_props = zfs_valid_proplist(g_zfs, type,
 873                     props, 0, NULL, msg)) == NULL)
 874                         goto error;
 875
 876                 volsize = zvol_volsize_to_reservation(volsize, real_props);
 877                 nvlist_free(real_props);
 878
 879                 if (nvlist_lookup_string(props, zfs_prop_to_name(resv_prop),
 880                     &strval) != 0) {
 881                         if (nvlist_add_uint64(props,
 882                             zfs_prop_to_name(resv_prop), volsize) != 0) {
 883                                 nvlist_free(props);
 884                                 nomem();
 885                         }
 886                 }
 887         }
 888
 889         if (parents && zfs_name_valid(argv[0], type)) {
 890                 /*
 891                  * Now create the ancestors of target dataset.  If the target
 892                  * already exists and '-p' option was used we should not
 893                  * complain.
 894                  */
 895                 if (zfs_dataset_exists(g_zfs, argv[0], type)) {
 896                         ret = 0;
 897                         goto error;
 898                 }
 899                 if (zfs_create_ancestors(g_zfs, argv[0]) != 0)
 900                         goto error;
 901         }
 902
 903         /* pass to libzfs */
 904         if (zfs_create(g_zfs, argv[0], type, props) != 0)
 905                 goto error;
 906
 907         if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL)
 908                 goto error;
 909
 910         ret = 0;
 911
 912         /*
 913          * Mount and/or share the new filesystem as appropriate.  We provide a
 914          * verbose error message to let the user know that their filesystem was
 915          * in fact created, even if we failed to mount or share it.
 916          * If the user doesn't want the dataset automatically mounted,
 917          * then skip the mount/share step altogether.
 918          */
 919         if (!nomount && should_auto_mount(zhp)) {
 920                 if (zfs_mount(zhp, NULL, 0) != 0) {
 921                         (void) fprintf(stderr, gettext("filesystem "
 922                             "successfully created, but not mounted\n"));
 923                         ret = 1;
 924                 } else if (zfs_share(zhp) != 0) {
 925                         (void) fprintf(stderr, gettext("filesystem "
 926                             "successfully created, but not shared\n"));
 927                         ret = 1;
 928                 }
 929         }
 930
 931 error:
 932         if (zhp)
 933                 zfs_close(zhp);
 934         nvlist_free(props);
 935         return (ret);
 936 badusage:
 937         nvlist_free(props);
 938         usage(B_FALSE);
 939         return (2);
 940 }
 941
 942 /*
 943  * zfs destroy [-rRf] <fs, vol>
 944  * zfs destroy [-rRd] <snap>
 945  *
 946  *      -r      Recursively destroy all children
 947  *      -R      Recursively destroy all dependents, including clones
 948  *      -f      Force unmounting of any dependents
 949  *      -d      If we can't destroy now, mark for deferred destruction
 950  *
 951  * Destroys the given dataset.  By default, it will unmount any filesystems,
 952  * and refuse to destroy a dataset that has any dependents.  A dependent can
 953  * either be a child, or a clone of a child.
 954  */
 955 typedef struct destroy_cbdata {
 956         boolean_t       cb_first;
 957         boolean_t       cb_force;
 958         boolean_t       cb_recurse;
 959         boolean_t       cb_error;
 960         boolean_t       cb_doclones;
 961         zfs_handle_t    *cb_target;
 962         boolean_t       cb_defer_destroy;
 963         boolean_t       cb_verbose;
 964         boolean_t       cb_parsable;
 965         boolean_t       cb_dryrun;
 966         nvlist_t        *cb_nvl;
 967         nvlist_t        *cb_batchedsnaps;
 968
 969         /* first snap in contiguous run */
 970         char            *cb_firstsnap;
 971         /* previous snap in contiguous run */
 972         char            *cb_prevsnap;
 973         int64_t         cb_snapused;
 974         char            *cb_snapspec;
 975         char            *cb_bookmark;
 976 } destroy_cbdata_t;
 977
 978 /*
 979  * Check for any dependents based on the '-r' or '-R' flags.
 980  */
 981 static int
 982 destroy_check_dependent(zfs_handle_t *zhp, void *data)
 983 {
 984         destroy_cbdata_t *cbp = data;
 985         const char *tname = zfs_get_name(cbp->cb_target);
 986         const char *name = zfs_get_name(zhp);
 987
 988         if (strncmp(tname, name, strlen(tname)) == 0 &&
 989             (name[strlen(tname)] == '/' || name[strlen(tname)] == '@')) {
 990                 /*
 991                  * This is a direct descendant, not a clone somewhere else in
 992                  * the hierarchy.
 993                  */
 994                 if (cbp->cb_recurse)
 995                         goto out;
 996
 997                 if (cbp->cb_first) {
 998                         (void) fprintf(stderr, gettext("cannot destroy '%s': "
 999                             "%s has children\n"),
1000                             zfs_get_name(cbp->cb_target),
1001                             zfs_type_to_name(zfs_get_type(cbp->cb_target)));
1002                         (void) fprintf(stderr, gettext("use '-r' to destroy "
1003                             "the following datasets:\n"));
1004                         cbp->cb_first = B_FALSE;
1005                         cbp->cb_error = B_TRUE;
1006                 }
1007
1008                 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
1009         } else {
1010                 /*
1011                  * This is a clone.  We only want to report this if the '-r'
1012                  * wasn't specified, or the target is a snapshot.
1013                  */
1014                 if (!cbp->cb_recurse &&
1015                     zfs_get_type(cbp->cb_target) != ZFS_TYPE_SNAPSHOT)
1016                         goto out;
1017
1018                 if (cbp->cb_first) {
1019                         (void) fprintf(stderr, gettext("cannot destroy '%s': "
1020                             "%s has dependent clones\n"),
1021                             zfs_get_name(cbp->cb_target),
1022                             zfs_type_to_name(zfs_get_type(cbp->cb_target)));
1023                         (void) fprintf(stderr, gettext("use '-R' to destroy "
1024                             "the following datasets:\n"));
1025                         cbp->cb_first = B_FALSE;
1026                         cbp->cb_error = B_TRUE;
1027                         cbp->cb_dryrun = B_TRUE;
1028                 }
1029
1030                 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
1031         }
1032
1033 out:
1034         zfs_close(zhp);
1035         return (0);
1036 }
1037
1038 static int
1039 destroy_callback(zfs_handle_t *zhp, void *data)
1040 {
1041         destroy_cbdata_t *cb = data;
1042         const char *name = zfs_get_name(zhp);
1043
1044         if (cb->cb_verbose) {
1045                 if (cb->cb_parsable) {
1046                         (void) printf("destroy\t%s\n", name);
1047                 } else if (cb->cb_dryrun) {
1048                         (void) printf(gettext("would destroy %s\n"),
1049                             name);
1050                 } else {
1051                         (void) printf(gettext("will destroy %s\n"),
1052                             name);
1053                 }
1054         }
1055
1056         /*
1057          * Ignore pools (which we've already flagged as an error before getting
1058          * here).
1059          */
1060         if (strchr(zfs_get_name(zhp), '/') == NULL &&
1061             zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
1062                 zfs_close(zhp);
1063                 return (0);
1064         }
1065         if (cb->cb_dryrun) {
1066                 zfs_close(zhp);
1067                 return (0);
1068         }
1069
1070         /*
1071          * We batch up all contiguous snapshots (even of different
1072          * filesystems) and destroy them with one ioctl.  We can't
1073          * simply do all snap deletions and then all fs deletions,
1074          * because we must delete a clone before its origin.
1075          */
1076         if (zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT) {
1077                 fnvlist_add_boolean(cb->cb_batchedsnaps, name);
1078         } else {
1079                 int error = zfs_destroy_snaps_nvl(g_zfs,
1080                     cb->cb_batchedsnaps, B_FALSE);
1081                 fnvlist_free(cb->cb_batchedsnaps);
1082                 cb->cb_batchedsnaps = fnvlist_alloc();
1083
1084                 if (error != 0 ||
1085                     zfs_unmount(zhp, NULL, cb->cb_force ? MS_FORCE : 0) != 0 ||
1086                     zfs_destroy(zhp, cb->cb_defer_destroy) != 0) {
1087                         zfs_close(zhp);
1088                         return (-1);
1089                 }
1090         }
1091
1092         zfs_close(zhp);
1093         return (0);
1094 }
1095
1096 static int
1097 destroy_print_cb(zfs_handle_t *zhp, void *arg)
1098 {
1099         destroy_cbdata_t *cb = arg;
1100         const char *name = zfs_get_name(zhp);
1101         int err = 0;
1102
1103         if (nvlist_exists(cb->cb_nvl, name)) {
1104                 if (cb->cb_firstsnap == NULL)
1105                         cb->cb_firstsnap = strdup(name);
1106                 if (cb->cb_prevsnap != NULL)
1107                         free(cb->cb_prevsnap);
1108                 /* this snap continues the current range */
1109                 cb->cb_prevsnap = strdup(name);
1110                 if (cb->cb_firstsnap == NULL || cb->cb_prevsnap == NULL)
1111                         nomem();
1112                 if (cb->cb_verbose) {
1113                         if (cb->cb_parsable) {
1114                                 (void) printf("destroy\t%s\n", name);
1115                         } else if (cb->cb_dryrun) {
1116                                 (void) printf(gettext("would destroy %s\n"),
1117                                     name);
1118                         } else {
1119                                 (void) printf(gettext("will destroy %s\n"),
1120                                     name);
1121                         }
1122                 }
1123         } else if (cb->cb_firstsnap != NULL) {
1124                 /* end of this range */
1125                 uint64_t used = 0;
1126                 err = lzc_snaprange_space(cb->cb_firstsnap,
1127                     cb->cb_prevsnap, &used);
1128                 cb->cb_snapused += used;
1129                 free(cb->cb_firstsnap);
1130                 cb->cb_firstsnap = NULL;
1131                 free(cb->cb_prevsnap);
1132                 cb->cb_prevsnap = NULL;
1133         }
1134         zfs_close(zhp);
1135         return (err);
1136 }
1137
1138 static int
1139 destroy_print_snapshots(zfs_handle_t *fs_zhp, destroy_cbdata_t *cb)
1140 {
1141         int err = 0;
1142         assert(cb->cb_firstsnap == NULL);
1143         assert(cb->cb_prevsnap == NULL);
1144         err = zfs_iter_snapshots_sorted(fs_zhp, destroy_print_cb, cb);
1145         if (cb->cb_firstsnap != NULL) {
1146                 uint64_t used = 0;
1147                 if (err == 0) {
1148                         err = lzc_snaprange_space(cb->cb_firstsnap,
1149                             cb->cb_prevsnap, &used);
1150                 }
1151                 cb->cb_snapused += used;
1152                 free(cb->cb_firstsnap);
1153                 cb->cb_firstsnap = NULL;
1154                 free(cb->cb_prevsnap);
1155                 cb->cb_prevsnap = NULL;
1156         }
1157         return (err);
1158 }
1159
1160 static int
1161 snapshot_to_nvl_cb(zfs_handle_t *zhp, void *arg)
1162 {
1163         destroy_cbdata_t *cb = arg;
1164         int err = 0;
1165
1166         /* Check for clones. */
1167         if (!cb->cb_doclones && !cb->cb_defer_destroy) {
1168                 cb->cb_target = zhp;
1169                 cb->cb_first = B_TRUE;
1170                 err = zfs_iter_dependents(zhp, B_TRUE,
1171                     destroy_check_dependent, cb);
1172         }
1173
1174         if (err == 0) {
1175                 if (nvlist_add_boolean(cb->cb_nvl, zfs_get_name(zhp)))
1176                         nomem();
1177         }
1178         zfs_close(zhp);
1179         return (err);
1180 }
1181
1182 static int
1183 gather_snapshots(zfs_handle_t *zhp, void *arg)
1184 {
1185         destroy_cbdata_t *cb = arg;
1186         int err = 0;
1187
1188         err = zfs_iter_snapspec(zhp, cb->cb_snapspec, snapshot_to_nvl_cb, cb);
1189         if (err == ENOENT)
1190                 err = 0;
1191         if (err != 0)
1192                 goto out;
1193
1194         if (cb->cb_verbose) {
1195                 err = destroy_print_snapshots(zhp, cb);
1196                 if (err != 0)
1197                         goto out;
1198         }
1199
1200         if (cb->cb_recurse)
1201                 err = zfs_iter_filesystems(zhp, gather_snapshots, cb);
1202
1203 out:
1204         zfs_close(zhp);
1205         return (err);
1206 }
1207
1208 static int
1209 destroy_clones(destroy_cbdata_t *cb)
1210 {
1211         nvpair_t *pair;
1212         for (pair = nvlist_next_nvpair(cb->cb_nvl, NULL);
1213             pair != NULL;
1214             pair = nvlist_next_nvpair(cb->cb_nvl, pair)) {
1215                 zfs_handle_t *zhp = zfs_open(g_zfs, nvpair_name(pair),
1216                     ZFS_TYPE_SNAPSHOT);
1217                 if (zhp != NULL) {
1218                         boolean_t defer = cb->cb_defer_destroy;
1219                         int err = 0;
1220
1221                         /*
1222                          * We can't defer destroy non-snapshots, so set it to
1223                          * false while destroying the clones.
1224                          */
1225                         cb->cb_defer_destroy = B_FALSE;
1226                         err = zfs_iter_dependents(zhp, B_FALSE,
1227                             destroy_callback, cb);
1228                         cb->cb_defer_destroy = defer;
1229                         zfs_close(zhp);
1230                         if (err != 0)
1231                                 return (err);
1232                 }
1233         }
1234         return (0);
1235 }
1236
1237 static int
1238 zfs_do_destroy(int argc, char **argv)
1239 {
1240         destroy_cbdata_t cb = { 0 };
1241         int rv = 0;
1242         int err = 0;
1243         int c;
1244         zfs_handle_t *zhp = NULL;
1245         char *at, *pound;
1246         zfs_type_t type = ZFS_TYPE_DATASET;
1247
1248         /* check options */
1249         while ((c = getopt(argc, argv, "vpndfrR")) != -1) {
1250                 switch (c) {
1251                 case 'v':
1252                         cb.cb_verbose = B_TRUE;
1253                         break;
1254                 case 'p':
1255                         cb.cb_verbose = B_TRUE;
1256                         cb.cb_parsable = B_TRUE;
1257                         break;
1258                 case 'n':
1259                         cb.cb_dryrun = B_TRUE;
1260                         break;
1261                 case 'd':
1262                         cb.cb_defer_destroy = B_TRUE;
1263                         type = ZFS_TYPE_SNAPSHOT;
1264                         break;
1265                 case 'f':
1266                         cb.cb_force = B_TRUE;
1267                         break;
1268                 case 'r':
1269                         cb.cb_recurse = B_TRUE;
1270                         break;
1271                 case 'R':
1272                         cb.cb_recurse = B_TRUE;
1273                         cb.cb_doclones = B_TRUE;
1274                         break;
1275                 case '?':
1276                 default:
1277                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1278                             optopt);
1279                         usage(B_FALSE);
1280                 }
1281         }
1282
1283         argc -= optind;
1284         argv += optind;
1285
1286         /* check number of arguments */
1287         if (argc == 0) {
1288                 (void) fprintf(stderr, gettext("missing dataset argument\n"));
1289                 usage(B_FALSE);
1290         }
1291         if (argc > 1) {
1292                 (void) fprintf(stderr, gettext("too many arguments\n"));
1293                 usage(B_FALSE);
1294         }
1295
1296         at = strchr(argv[0], '@');
1297         pound = strchr(argv[0], '#');
1298         if (at != NULL) {
1299
1300                 /* Build the list of snaps to destroy in cb_nvl. */
1301                 cb.cb_nvl = fnvlist_alloc();
1302
1303                 *at = '\0';
1304                 zhp = zfs_open(g_zfs, argv[0],
1305                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
1306                 if (zhp == NULL)
1307                         return (1);
1308
1309                 cb.cb_snapspec = at + 1;
1310                 if (gather_snapshots(zfs_handle_dup(zhp), &cb) != 0 ||
1311                     cb.cb_error) {
1312                         rv = 1;
1313                         goto out;
1314                 }
1315
1316                 if (nvlist_empty(cb.cb_nvl)) {
1317                         (void) fprintf(stderr, gettext("could not find any "
1318                             "snapshots to destroy; check snapshot names.\n"));
1319                         rv = 1;
1320                         goto out;
1321                 }
1322
1323                 if (cb.cb_verbose) {
1324                         char buf[16];
1325                         zfs_nicenum(cb.cb_snapused, buf, sizeof (buf));
1326                         if (cb.cb_parsable) {
1327                                 (void) printf("reclaim\t%llu\n",
1328                                     cb.cb_snapused);
1329                         } else if (cb.cb_dryrun) {
1330                                 (void) printf(gettext("would reclaim %s\n"),
1331                                     buf);
1332                         } else {
1333                                 (void) printf(gettext("will reclaim %s\n"),
1334                                     buf);
1335                         }
1336                 }
1337
1338                 if (!cb.cb_dryrun) {
1339                         if (cb.cb_doclones) {
1340                                 cb.cb_batchedsnaps = fnvlist_alloc();
1341                                 err = destroy_clones(&cb);
1342                                 if (err == 0) {
1343                                         err = zfs_destroy_snaps_nvl(g_zfs,
1344                                             cb.cb_batchedsnaps, B_FALSE);
1345                                 }
1346                                 if (err != 0) {
1347                                         rv = 1;
1348                                         goto out;
1349                                 }
1350                         }
1351                         if (err == 0) {
1352                                 err = zfs_destroy_snaps_nvl(g_zfs, cb.cb_nvl,
1353                                     cb.cb_defer_destroy);
1354                         }
1355                 }
1356
1357                 if (err != 0)
1358                         rv = 1;
1359         } else if (pound != NULL) {
1360                 int err;
1361                 nvlist_t *nvl;
1362
1363                 if (cb.cb_dryrun) {
1364                         (void) fprintf(stderr,
1365                             "dryrun is not supported with bookmark\n");
1366                         return (-1);
1367                 }
1368
1369                 if (cb.cb_defer_destroy) {
1370                         (void) fprintf(stderr,
1371                             "defer destroy is not supported with bookmark\n");
1372                         return (-1);
1373                 }
1374
1375                 if (cb.cb_recurse) {
1376                         (void) fprintf(stderr,
1377                             "recursive is not supported with bookmark\n");
1378                         return (-1);
1379                 }
1380
1381                 if (!zfs_bookmark_exists(argv[0])) {
1382                         (void) fprintf(stderr, gettext("bookmark '%s' "
1383                             "does not exist.\n"), argv[0]);
1384                         return (1);
1385                 }
1386
1387                 nvl = fnvlist_alloc();
1388                 fnvlist_add_boolean(nvl, argv[0]);
1389
1390                 err = lzc_destroy_bookmarks(nvl, NULL);
1391                 if (err != 0) {
1392                         (void) zfs_standard_error(g_zfs, err,
1393                             "cannot destroy bookmark");
1394                 }
1395
1396                 nvlist_free(cb.cb_nvl);
1397
1398                 return (err);
1399         } else {
1400                 /* Open the given dataset */
1401                 if ((zhp = zfs_open(g_zfs, argv[0], type)) == NULL)
1402                         return (1);
1403
1404                 cb.cb_target = zhp;
1405
1406                 /*
1407                  * Perform an explicit check for pools before going any further.
1408                  */
1409                 if (!cb.cb_recurse && strchr(zfs_get_name(zhp), '/') == NULL &&
1410                     zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
1411                         (void) fprintf(stderr, gettext("cannot destroy '%s': "
1412                             "operation does not apply to pools\n"),
1413                             zfs_get_name(zhp));
1414                         (void) fprintf(stderr, gettext("use 'zfs destroy -r "
1415                             "%s' to destroy all datasets in the pool\n"),
1416                             zfs_get_name(zhp));
1417                         (void) fprintf(stderr, gettext("use 'zpool destroy %s' "
1418                             "to destroy the pool itself\n"), zfs_get_name(zhp));
1419                         rv = 1;
1420                         goto out;
1421                 }
1422
1423                 /*
1424                  * Check for any dependents and/or clones.
1425                  */
1426                 cb.cb_first = B_TRUE;
1427                 if (!cb.cb_doclones &&
1428                     zfs_iter_dependents(zhp, B_TRUE, destroy_check_dependent,
1429                     &cb) != 0) {
1430                         rv = 1;
1431                         goto out;
1432                 }
1433
1434                 if (cb.cb_error) {
1435                         rv = 1;
1436                         goto out;
1437                 }
1438
1439                 cb.cb_batchedsnaps = fnvlist_alloc();
1440                 if (zfs_iter_dependents(zhp, B_FALSE, destroy_callback,
1441                     &cb) != 0) {
1442                         rv = 1;
1443                         goto out;
1444                 }
1445
1446                 /*
1447                  * Do the real thing.  The callback will close the
1448                  * handle regardless of whether it succeeds or not.
1449                  */
1450                 err = destroy_callback(zhp, &cb);
1451                 zhp = NULL;
1452                 if (err == 0) {
1453                         err = zfs_destroy_snaps_nvl(g_zfs,
1454                             cb.cb_batchedsnaps, cb.cb_defer_destroy);
1455                 }
1456                 if (err != 0)
1457                         rv = 1;
1458         }
1459
1460 out:
1461         fnvlist_free(cb.cb_batchedsnaps);
1462         fnvlist_free(cb.cb_nvl);
1463         if (zhp != NULL)
1464                 zfs_close(zhp);
1465         return (rv);
1466 }
1467
1468 static boolean_t
1469 is_recvd_column(zprop_get_cbdata_t *cbp)
1470 {
1471         int i;
1472         zfs_get_column_t col;
1473
1474         for (i = 0; i < ZFS_GET_NCOLS &&
1475             (col = cbp->cb_columns[i]) != GET_COL_NONE; i++)
1476                 if (col == GET_COL_RECVD)
1477                         return (B_TRUE);
1478         return (B_FALSE);
1479 }
1480
1481 /*
1482  * zfs get [-rHp] [-o all | field[,field]...] [-s source[,source]...]
1483  *      < all | property[,property]... > < fs | snap | vol > ...
1484  *
1485  *      -r      recurse over any child datasets
1486  *      -H      scripted mode.  Headers are stripped, and fields are separated
1487  *              by tabs instead of spaces.
1488  *      -o      Set of fields to display.  One of "name,property,value,
1489  *              received,source". Default is "name,property,value,source".
1490  *              "all" is an alias for all five.
1491  *      -s      Set of sources to allow.  One of
1492  *              "local,default,inherited,received,temporary,none".  Default is
1493  *              all six.
1494  *      -p      Display values in parsable (literal) format.
1495  *
1496  *  Prints properties for the given datasets.  The user can control which
1497  *  columns to display as well as which property types to allow.
1498  */
1499
1500 /*
1501  * Invoked to display the properties for a single dataset.
1502  */
1503 static int
1504 get_callback(zfs_handle_t *zhp, void *data)
1505 {
1506         char buf[ZFS_MAXPROPLEN];
1507         char rbuf[ZFS_MAXPROPLEN];
1508         zprop_source_t sourcetype;
1509         char source[ZFS_MAXNAMELEN];
1510         zprop_get_cbdata_t *cbp = data;
1511         nvlist_t *user_props = zfs_get_user_props(zhp);
1512         zprop_list_t *pl = cbp->cb_proplist;
1513         nvlist_t *propval;
1514         char *strval;
1515         char *sourceval;
1516         boolean_t received = is_recvd_column(cbp);
1517
1518         for (; pl != NULL; pl = pl->pl_next) {
1519                 char *recvdval = NULL;
1520                 /*
1521                  * Skip the special fake placeholder.  This will also skip over
1522                  * the name property when 'all' is specified.
1523                  */
1524                 if (pl->pl_prop == ZFS_PROP_NAME &&
1525                     pl == cbp->cb_proplist)
1526                         continue;
1527
1528                 if (pl->pl_prop != ZPROP_INVAL) {
1529                         if (zfs_prop_get(zhp, pl->pl_prop, buf,
1530                             sizeof (buf), &sourcetype, source,
1531                             sizeof (source),
1532                             cbp->cb_literal) != 0) {
1533                                 if (pl->pl_all)
1534                                         continue;
1535                                 if (!zfs_prop_valid_for_type(pl->pl_prop,
1536                                     ZFS_TYPE_DATASET)) {
1537                                         (void) fprintf(stderr,
1538                                             gettext("No such property '%s'\n"),
1539                                             zfs_prop_to_name(pl->pl_prop));
1540                                         continue;
1541                                 }
1542                                 sourcetype = ZPROP_SRC_NONE;
1543                                 (void) strlcpy(buf, "-", sizeof (buf));
1544                         }
1545
1546                         if (received && (zfs_prop_get_recvd(zhp,
1547                             zfs_prop_to_name(pl->pl_prop), rbuf, sizeof (rbuf),
1548                             cbp->cb_literal) == 0))
1549                                 recvdval = rbuf;
1550
1551                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1552                             zfs_prop_to_name(pl->pl_prop),
1553                             buf, sourcetype, source, recvdval);
1554                 } else if (zfs_prop_userquota(pl->pl_user_prop)) {
1555                         sourcetype = ZPROP_SRC_LOCAL;
1556
1557                         if (zfs_prop_get_userquota(zhp, pl->pl_user_prop,
1558                             buf, sizeof (buf), cbp->cb_literal) != 0) {
1559                                 sourcetype = ZPROP_SRC_NONE;
1560                                 (void) strlcpy(buf, "-", sizeof (buf));
1561                         }
1562
1563                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1564                             pl->pl_user_prop, buf, sourcetype, source, NULL);
1565                 } else if (zfs_prop_written(pl->pl_user_prop)) {
1566                         sourcetype = ZPROP_SRC_LOCAL;
1567
1568                         if (zfs_prop_get_written(zhp, pl->pl_user_prop,
1569                             buf, sizeof (buf), cbp->cb_literal) != 0) {
1570                                 sourcetype = ZPROP_SRC_NONE;
1571                                 (void) strlcpy(buf, "-", sizeof (buf));
1572                         }
1573
1574                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1575                             pl->pl_user_prop, buf, sourcetype, source, NULL);
1576                 } else {
1577                         if (nvlist_lookup_nvlist(user_props,
1578                             pl->pl_user_prop, &propval) != 0) {
1579                                 if (pl->pl_all)
1580                                         continue;
1581                                 sourcetype = ZPROP_SRC_NONE;
1582                                 strval = "-";
1583                         } else {
1584                                 verify(nvlist_lookup_string(propval,
1585                                     ZPROP_VALUE, &strval) == 0);
1586                                 verify(nvlist_lookup_string(propval,
1587                                     ZPROP_SOURCE, &sourceval) == 0);
1588
1589                                 if (strcmp(sourceval,
1590                                     zfs_get_name(zhp)) == 0) {
1591                                         sourcetype = ZPROP_SRC_LOCAL;
1592                                 } else if (strcmp(sourceval,
1593                                     ZPROP_SOURCE_VAL_RECVD) == 0) {
1594                                         sourcetype = ZPROP_SRC_RECEIVED;
1595                                 } else {
1596                                         sourcetype = ZPROP_SRC_INHERITED;
1597                                         (void) strlcpy(source,
1598                                             sourceval, sizeof (source));
1599                                 }
1600                         }
1601
1602                         if (received && (zfs_prop_get_recvd(zhp,
1603                             pl->pl_user_prop, rbuf, sizeof (rbuf),
1604                             cbp->cb_literal) == 0))
1605                                 recvdval = rbuf;
1606
1607                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1608                             pl->pl_user_prop, strval, sourcetype,
1609                             source, recvdval);
1610                 }
1611         }
1612
1613         return (0);
1614 }
1615
1616 static int
1617 zfs_do_get(int argc, char **argv)
1618 {
1619         zprop_get_cbdata_t cb = { 0 };
1620         int i, c, flags = ZFS_ITER_ARGS_CAN_BE_PATHS;
1621         int types = ZFS_TYPE_DATASET;
1622         char *value, *fields;
1623         int ret = 0;
1624         int limit = 0;
1625         zprop_list_t fake_name = { 0 };
1626
1627         /*
1628          * Set up default columns and sources.
1629          */
1630         cb.cb_sources = ZPROP_SRC_ALL;
1631         cb.cb_columns[0] = GET_COL_NAME;
1632         cb.cb_columns[1] = GET_COL_PROPERTY;
1633         cb.cb_columns[2] = GET_COL_VALUE;
1634         cb.cb_columns[3] = GET_COL_SOURCE;
1635         cb.cb_type = ZFS_TYPE_DATASET;
1636
1637         /* check options */
1638         while ((c = getopt(argc, argv, ":d:o:s:rt:Hp")) != -1) {
1639                 switch (c) {
1640                 case 'p':
1641                         cb.cb_literal = B_TRUE;
1642                         break;
1643                 case 'd':
1644                         limit = parse_depth(optarg, &flags);
1645                         break;
1646                 case 'r':
1647                         flags |= ZFS_ITER_RECURSE;
1648                         break;
1649                 case 'H':
1650                         cb.cb_scripted = B_TRUE;
1651                         break;
1652                 case ':':
1653                         (void) fprintf(stderr, gettext("missing argument for "
1654                             "'%c' option\n"), optopt);
1655                         usage(B_FALSE);
1656                         break;
1657                 case 'o':
1658                         /*
1659                          * Process the set of columns to display.  We zero out
1660                          * the structure to give us a blank slate.
1661                          */
1662                         bzero(&cb.cb_columns, sizeof (cb.cb_columns));
1663                         i = 0;
1664                         while (*optarg != '\0') {
1665                                 static char *col_subopts[] =
1666                                     { "name", "property", "value", "received",
1667                                     "source", "all", NULL };
1668
1669                                 if (i == ZFS_GET_NCOLS) {
1670                                         (void) fprintf(stderr, gettext("too "
1671                                             "many fields given to -o "
1672                                             "option\n"));
1673                                         usage(B_FALSE);
1674                                 }
1675
1676                                 switch (getsubopt(&optarg, col_subopts,
1677                                     &value)) {
1678                                 case 0:
1679                                         cb.cb_columns[i++] = GET_COL_NAME;
1680                                         break;
1681                                 case 1:
1682                                         cb.cb_columns[i++] = GET_COL_PROPERTY;
1683                                         break;
1684                                 case 2:
1685                                         cb.cb_columns[i++] = GET_COL_VALUE;
1686                                         break;
1687                                 case 3:
1688                                         cb.cb_columns[i++] = GET_COL_RECVD;
1689                                         flags |= ZFS_ITER_RECVD_PROPS;
1690                                         break;
1691                                 case 4:
1692                                         cb.cb_columns[i++] = GET_COL_SOURCE;
1693                                         break;
1694                                 case 5:
1695                                         if (i > 0) {
1696                                                 (void) fprintf(stderr,
1697                                                     gettext("\"all\" conflicts "
1698                                                     "with specific fields "
1699                                                     "given to -o option\n"));
1700                                                 usage(B_FALSE);
1701                                         }
1702                                         cb.cb_columns[0] = GET_COL_NAME;
1703                                         cb.cb_columns[1] = GET_COL_PROPERTY;
1704                                         cb.cb_columns[2] = GET_COL_VALUE;
1705                                         cb.cb_columns[3] = GET_COL_RECVD;
1706                                         cb.cb_columns[4] = GET_COL_SOURCE;
1707                                         flags |= ZFS_ITER_RECVD_PROPS;
1708                                         i = ZFS_GET_NCOLS;
1709                                         break;
1710                                 default:
1711                                         (void) fprintf(stderr,
1712                                             gettext("invalid column name "
1713                                             "'%s'\n"), value);
1714                                         usage(B_FALSE);
1715                                 }
1716                         }
1717                         break;
1718
1719                 case 's':
1720                         cb.cb_sources = 0;
1721                         while (*optarg != '\0') {
1722                                 static char *source_subopts[] = {
1723                                         "local", "default", "inherited",
1724                                         "received", "temporary", "none",
1725                                         NULL };
1726
1727                                 switch (getsubopt(&optarg, source_subopts,
1728                                     &value)) {
1729                                 case 0:
1730                                         cb.cb_sources |= ZPROP_SRC_LOCAL;
1731                                         break;
1732                                 case 1:
1733                                         cb.cb_sources |= ZPROP_SRC_DEFAULT;
1734                                         break;
1735                                 case 2:
1736                                         cb.cb_sources |= ZPROP_SRC_INHERITED;
1737                                         break;
1738                                 case 3:
1739                                         cb.cb_sources |= ZPROP_SRC_RECEIVED;
1740                                         break;
1741                                 case 4:
1742                                         cb.cb_sources |= ZPROP_SRC_TEMPORARY;
1743                                         break;
1744                                 case 5:
1745                                         cb.cb_sources |= ZPROP_SRC_NONE;
1746                                         break;
1747                                 default:
1748                                         (void) fprintf(stderr,
1749                                             gettext("invalid source "
1750                                             "'%s'\n"), value);
1751                                         usage(B_FALSE);
1752                                 }
1753                         }
1754                         break;
1755
1756                 case 't':
1757                         types = 0;
1758                         flags &= ~ZFS_ITER_PROP_LISTSNAPS;
1759                         while (*optarg != '\0') {
1760                                 static char *type_subopts[] = { "filesystem",
1761                                     "volume", "snapshot", "bookmark",
1762                                     "all", NULL };
1763
1764                                 switch (getsubopt(&optarg, type_subopts,
1765                                     &value)) {
1766                                 case 0:
1767                                         types |= ZFS_TYPE_FILESYSTEM;
1768                                         break;
1769                                 case 1:
1770                                         types |= ZFS_TYPE_VOLUME;
1771                                         break;
1772                                 case 2:
1773                                         types |= ZFS_TYPE_SNAPSHOT;
1774                                         break;
1775                                 case 3:
1776                                         types |= ZFS_TYPE_BOOKMARK;
1777                                         break;
1778                                 case 4:
1779                                         types = ZFS_TYPE_DATASET |
1780                                             ZFS_TYPE_BOOKMARK;
1781                                         break;
1782
1783                                 default:
1784                                         (void) fprintf(stderr,
1785                                             gettext("invalid type '%s'\n"),
1786                                             value);
1787                                         usage(B_FALSE);
1788                                 }
1789                         }
1790                         break;
1791
1792                 case '?':
1793                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1794                             optopt);
1795                         usage(B_FALSE);
1796                 }
1797         }
1798
1799         argc -= optind;
1800         argv += optind;
1801
1802         if (argc < 1) {
1803                 (void) fprintf(stderr, gettext("missing property "
1804                     "argument\n"));
1805                 usage(B_FALSE);
1806         }
1807
1808         fields = argv[0];
1809
1810         if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
1811             != 0)
1812                 usage(B_FALSE);
1813
1814         argc--;
1815         argv++;
1816
1817         /*
1818          * As part of zfs_expand_proplist(), we keep track of the maximum column
1819          * width for each property.  For the 'NAME' (and 'SOURCE') columns, we
1820          * need to know the maximum name length.  However, the user likely did
1821          * not specify 'name' as one of the properties to fetch, so we need to
1822          * make sure we always include at least this property for
1823          * print_get_headers() to work properly.
1824          */
1825         if (cb.cb_proplist != NULL) {
1826                 fake_name.pl_prop = ZFS_PROP_NAME;
1827                 fake_name.pl_width = strlen(gettext("NAME"));
1828                 fake_name.pl_next = cb.cb_proplist;
1829                 cb.cb_proplist = &fake_name;
1830         }
1831
1832         cb.cb_first = B_TRUE;
1833
1834         /* run for each object */
1835         ret = zfs_for_each(argc, argv, flags, types, NULL,
1836             &cb.cb_proplist, limit, get_callback, &cb);
1837
1838         if (cb.cb_proplist == &fake_name)
1839                 zprop_free_list(fake_name.pl_next);
1840         else
1841                 zprop_free_list(cb.cb_proplist);
1842
1843         return (ret);
1844 }
1845
1846 /*
1847  * inherit [-rS] <property> <fs|vol> ...
1848  *
1849  *      -r      Recurse over all children
1850  *      -S      Revert to received value, if any
1851  *
1852  * For each dataset specified on the command line, inherit the given property
1853  * from its parent.  Inheriting a property at the pool level will cause it to
1854  * use the default value.  The '-r' flag will recurse over all children, and is
1855  * useful for setting a property on a hierarchy-wide basis, regardless of any
1856  * local modifications for each dataset.
1857  */
1858
1859 typedef struct inherit_cbdata {
1860         const char *cb_propname;
1861         boolean_t cb_received;
1862 } inherit_cbdata_t;
1863
1864 static int
1865 inherit_recurse_cb(zfs_handle_t *zhp, void *data)
1866 {
1867         inherit_cbdata_t *cb = data;
1868         zfs_prop_t prop = zfs_name_to_prop(cb->cb_propname);
1869
1870         /*
1871          * If we're doing it recursively, then ignore properties that
1872          * are not valid for this type of dataset.
1873          */
1874         if (prop != ZPROP_INVAL &&
1875             !zfs_prop_valid_for_type(prop, zfs_get_type(zhp)))
1876                 return (0);
1877
1878         return (zfs_prop_inherit(zhp, cb->cb_propname, cb->cb_received) != 0);
1879 }
1880
1881 static int
1882 inherit_cb(zfs_handle_t *zhp, void *data)
1883 {
1884         inherit_cbdata_t *cb = data;
1885
1886         return (zfs_prop_inherit(zhp, cb->cb_propname, cb->cb_received) != 0);
1887 }
1888
1889 static int
1890 zfs_do_inherit(int argc, char **argv)
1891 {
1892         int c;
1893         zfs_prop_t prop;
1894         inherit_cbdata_t cb = { 0 };
1895         char *propname;
1896         int ret = 0;
1897         int flags = 0;
1898         boolean_t received = B_FALSE;
1899
1900         /* check options */
1901         while ((c = getopt(argc, argv, "rS")) != -1) {
1902                 switch (c) {
1903                 case 'r':
1904                         flags |= ZFS_ITER_RECURSE;
1905                         break;
1906                 case 'S':
1907                         received = B_TRUE;
1908                         break;
1909                 case '?':
1910                 default:
1911                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1912                             optopt);
1913                         usage(B_FALSE);
1914                 }
1915         }
1916
1917         argc -= optind;
1918         argv += optind;
1919
1920         /* check number of arguments */
1921         if (argc < 1) {
1922                 (void) fprintf(stderr, gettext("missing property argument\n"));
1923                 usage(B_FALSE);
1924         }
1925         if (argc < 2) {
1926                 (void) fprintf(stderr, gettext("missing dataset argument\n"));
1927                 usage(B_FALSE);
1928         }
1929
1930         propname = argv[0];
1931         argc--;
1932         argv++;
1933
1934         if ((prop = zfs_name_to_prop(propname)) != ZPROP_INVAL) {
1935                 if (zfs_prop_readonly(prop)) {
1936                         (void) fprintf(stderr, gettext(
1937                             "%s property is read-only\n"),
1938                             propname);
1939                         return (1);
1940                 }
1941                 if (!zfs_prop_inheritable(prop) && !received) {
1942                         (void) fprintf(stderr, gettext("'%s' property cannot "
1943                             "be inherited\n"), propname);
1944                         if (prop == ZFS_PROP_QUOTA ||
1945                             prop == ZFS_PROP_RESERVATION ||
1946                             prop == ZFS_PROP_REFQUOTA ||
1947                             prop == ZFS_PROP_REFRESERVATION) {
1948                                 (void) fprintf(stderr, gettext("use 'zfs set "
1949                                     "%s=none' to clear\n"), propname);
1950                                 (void) fprintf(stderr, gettext("use 'zfs "
1951                                     "inherit -S %s' to revert to received "
1952                                     "value\n"), propname);
1953                         }
1954                         return (1);
1955                 }
1956                 if (received && (prop == ZFS_PROP_VOLSIZE ||
1957                     prop == ZFS_PROP_VERSION)) {
1958                         (void) fprintf(stderr, gettext("'%s' property cannot "
1959                             "be reverted to a received value\n"), propname);
1960                         return (1);
1961                 }
1962         } else if (!zfs_prop_user(propname)) {
1963                 (void) fprintf(stderr, gettext("invalid property '%s'\n"),
1964                     propname);
1965                 usage(B_FALSE);
1966         }
1967
1968         cb.cb_propname = propname;
1969         cb.cb_received = received;
1970
1971         if (flags & ZFS_ITER_RECURSE) {
1972                 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
1973                     NULL, NULL, 0, inherit_recurse_cb, &cb);
1974         } else {
1975                 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
1976                     NULL, NULL, 0, inherit_cb, &cb);
1977         }
1978
1979         return (ret);
1980 }
1981
1982 typedef struct upgrade_cbdata {
1983         uint64_t cb_numupgraded;
1984         uint64_t cb_numsamegraded;
1985         uint64_t cb_numfailed;
1986         uint64_t cb_version;
1987         boolean_t cb_newer;
1988         boolean_t cb_foundone;
1989         char cb_lastfs[ZFS_MAXNAMELEN];
1990 } upgrade_cbdata_t;
1991
1992 static int
1993 same_pool(zfs_handle_t *zhp, const char *name)
1994 {
1995         int len1 = strcspn(name, "/@");
1996         const char *zhname = zfs_get_name(zhp);
1997         int len2 = strcspn(zhname, "/@");
1998
1999         if (len1 != len2)
2000                 return (B_FALSE);
2001         return (strncmp(name, zhname, len1) == 0);
2002 }
2003
2004 static int
2005 upgrade_list_callback(zfs_handle_t *zhp, void *data)
2006 {
2007         upgrade_cbdata_t *cb = data;
2008         int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
2009
2010         /* list if it's old/new */
2011         if ((!cb->cb_newer && version < ZPL_VERSION) ||
2012             (cb->cb_newer && version > ZPL_VERSION)) {
2013                 char *str;
2014                 if (cb->cb_newer) {
2015                         str = gettext("The following filesystems are "
2016                             "formatted using a newer software version and\n"
2017                             "cannot be accessed on the current system.\n\n");
2018                 } else {
2019                         str = gettext("The following filesystems are "
2020                             "out of date, and can be upgraded.  After being\n"
2021                             "upgraded, these filesystems (and any 'zfs send' "
2022                             "streams generated from\n"
2023                             "subsequent snapshots) will no longer be "
2024                             "accessible by older software versions.\n\n");
2025                 }
2026
2027                 if (!cb->cb_foundone) {
2028                         (void) puts(str);
2029                         (void) printf(gettext("VER  FILESYSTEM\n"));
2030                         (void) printf(gettext("---  ------------\n"));
2031                         cb->cb_foundone = B_TRUE;
2032                 }
2033
2034                 (void) printf("%2u   %s\n", version, zfs_get_name(zhp));
2035         }
2036
2037         return (0);
2038 }
2039
2040 static int
2041 upgrade_set_callback(zfs_handle_t *zhp, void *data)
2042 {
2043         upgrade_cbdata_t *cb = data;
2044         int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
2045         int needed_spa_version;
2046         int spa_version;
2047
2048         if (zfs_spa_version(zhp, &spa_version) < 0)
2049                 return (-1);
2050
2051         needed_spa_version = zfs_spa_version_map(cb->cb_version);
2052
2053         if (needed_spa_version < 0)
2054                 return (-1);
2055
2056         if (spa_version < needed_spa_version) {
2057                 /* can't upgrade */
2058                 (void) printf(gettext("%s: can not be "
2059                     "upgraded; the pool version needs to first "
2060                     "be upgraded\nto version %d\n\n"),
2061                     zfs_get_name(zhp), needed_spa_version);
2062                 cb->cb_numfailed++;
2063                 return (0);
2064         }
2065
2066         /* upgrade */
2067         if (version < cb->cb_version) {
2068                 char verstr[16];
2069                 (void) snprintf(verstr, sizeof (verstr),
2070                     "%llu", cb->cb_version);
2071                 if (cb->cb_lastfs[0] && !same_pool(zhp, cb->cb_lastfs)) {
2072                         /*
2073                          * If they did "zfs upgrade -a", then we could
2074                          * be doing ioctls to different pools.  We need
2075                          * to log this history once to each pool, and bypass
2076                          * the normal history logging that happens in main().
2077                          */
2078                         (void) zpool_log_history(g_zfs, history_str);
2079                         log_history = B_FALSE;
2080                 }
2081                 if (zfs_prop_set(zhp, "version", verstr) == 0)
2082                         cb->cb_numupgraded++;
2083                 else
2084                         cb->cb_numfailed++;
2085                 (void) strcpy(cb->cb_lastfs, zfs_get_name(zhp));
2086         } else if (version > cb->cb_version) {
2087                 /* can't downgrade */
2088                 (void) printf(gettext("%s: can not be downgraded; "
2089                     "it is already at version %u\n"),
2090                     zfs_get_name(zhp), version);
2091                 cb->cb_numfailed++;
2092         } else {
2093                 cb->cb_numsamegraded++;
2094         }
2095         return (0);
2096 }
2097
2098 /*
2099  * zfs upgrade
2100  * zfs upgrade -v
2101  * zfs upgrade [-r] [-V <version>] <-a | filesystem>
2102  */
2103 static int
2104 zfs_do_upgrade(int argc, char **argv)
2105 {
2106         boolean_t all = B_FALSE;
2107         boolean_t showversions = B_FALSE;
2108         int ret = 0;
2109         upgrade_cbdata_t cb = { 0 };
2110         int c;
2111         int flags = ZFS_ITER_ARGS_CAN_BE_PATHS;
2112
2113         /* check options */
2114         while ((c = getopt(argc, argv, "rvV:a")) != -1) {
2115                 switch (c) {
2116                 case 'r':
2117                         flags |= ZFS_ITER_RECURSE;
2118                         break;
2119                 case 'v':
2120                         showversions = B_TRUE;
2121                         break;
2122                 case 'V':
2123                         if (zfs_prop_string_to_index(ZFS_PROP_VERSION,
2124                             optarg, &cb.cb_version) != 0) {
2125                                 (void) fprintf(stderr,
2126                                     gettext("invalid version %s\n"), optarg);
2127                                 usage(B_FALSE);
2128                         }
2129                         break;
2130                 case 'a':
2131                         all = B_TRUE;
2132                         break;
2133                 case '?':
2134                 default:
2135                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2136                             optopt);
2137                         usage(B_FALSE);
2138                 }
2139         }
2140
2141         argc -= optind;
2142         argv += optind;
2143
2144         if ((!all && !argc) && ((flags & ZFS_ITER_RECURSE) | cb.cb_version))
2145                 usage(B_FALSE);
2146         if (showversions && (flags & ZFS_ITER_RECURSE || all ||
2147             cb.cb_version || argc))
2148                 usage(B_FALSE);
2149         if ((all || argc) && (showversions))
2150                 usage(B_FALSE);
2151         if (all && argc)
2152                 usage(B_FALSE);
2153
2154         if (showversions) {
2155                 /* Show info on available versions. */
2156                 (void) printf(gettext("The following filesystem versions are "
2157                     "supported:\n\n"));
2158                 (void) printf(gettext("VER  DESCRIPTION\n"));
2159                 (void) printf("---  -----------------------------------------"
2160                     "---------------\n");
2161                 (void) printf(gettext(" 1   Initial ZFS filesystem version\n"));
2162                 (void) printf(gettext(" 2   Enhanced directory entries\n"));
2163                 (void) printf(gettext(" 3   Case insensitive and filesystem "
2164                     "user identifier (FUID)\n"));
2165                 (void) printf(gettext(" 4   userquota, groupquota "
2166                     "properties\n"));
2167                 (void) printf(gettext(" 5   System attributes\n"));
2168                 (void) printf(gettext("\nFor more information on a particular "
2169                     "version, including supported releases,\n"));
2170                 (void) printf("see the ZFS Administration Guide.\n\n");
2171                 ret = 0;
2172         } else if (argc || all) {
2173                 /* Upgrade filesystems */
2174                 if (cb.cb_version == 0)
2175                         cb.cb_version = ZPL_VERSION;
2176                 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_FILESYSTEM,
2177                     NULL, NULL, 0, upgrade_set_callback, &cb);
2178                 (void) printf(gettext("%llu filesystems upgraded\n"),
2179                     cb.cb_numupgraded);
2180                 if (cb.cb_numsamegraded) {
2181                         (void) printf(gettext("%llu filesystems already at "
2182                             "this version\n"),
2183                             cb.cb_numsamegraded);
2184                 }
2185                 if (cb.cb_numfailed != 0)
2186                         ret = 1;
2187         } else {
2188                 /* List old-version filesytems */
2189                 boolean_t found;
2190                 (void) printf(gettext("This system is currently running "
2191                     "ZFS filesystem version %llu.\n\n"), ZPL_VERSION);
2192
2193                 flags |= ZFS_ITER_RECURSE;
2194                 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
2195                     NULL, NULL, 0, upgrade_list_callback, &cb);
2196
2197                 found = cb.cb_foundone;
2198                 cb.cb_foundone = B_FALSE;
2199                 cb.cb_newer = B_TRUE;
2200
2201                 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
2202                     NULL, NULL, 0, upgrade_list_callback, &cb);
2203
2204                 if (!cb.cb_foundone && !found) {
2205                         (void) printf(gettext("All filesystems are "
2206                             "formatted with the current version.\n"));
2207                 }
2208         }
2209
2210         return (ret);
2211 }
2212
2213 /*
2214  * zfs userspace [-Hinp] [-o field[,...]] [-s field [-s field]...]
2215  *               [-S field [-S field]...] [-t type[,...]] filesystem | snapshot
2216  * zfs groupspace [-Hinp] [-o field[,...]] [-s field [-s field]...]
2217  *                [-S field [-S field]...] [-t type[,...]] filesystem | snapshot
2218  *
2219  *      -H      Scripted mode; elide headers and separate columns by tabs.
2220  *      -i      Translate SID to POSIX ID.
2221  *      -n      Print numeric ID instead of user/group name.
2222  *      -o      Control which fields to display.
2223  *      -p      Use exact (parsable) numeric output.
2224  *      -s      Specify sort columns, descending order.
2225  *      -S      Specify sort columns, ascending order.
2226  *      -t      Control which object types to display.
2227  *
2228  *      Displays space consumed by, and quotas on, each user in the specified
2229  *      filesystem or snapshot.
2230  */
2231
2232 /* us_field_types, us_field_hdr and us_field_names should be kept in sync */
2233 enum us_field_types {
2234         USFIELD_TYPE,
2235         USFIELD_NAME,
2236         USFIELD_USED,
2237         USFIELD_QUOTA
2238 };
2239 static char *us_field_hdr[] = { "TYPE", "NAME", "USED", "QUOTA" };
2240 static char *us_field_names[] = { "type", "name", "used", "quota" };
2241 #define USFIELD_LAST    (sizeof (us_field_names) / sizeof (char *))
2242
2243 #define USTYPE_PSX_GRP  (1 << 0)
2244 #define USTYPE_PSX_USR  (1 << 1)
2245 #define USTYPE_SMB_GRP  (1 << 2)
2246 #define USTYPE_SMB_USR  (1 << 3)
2247 #define USTYPE_ALL      \
2248         (USTYPE_PSX_GRP | USTYPE_PSX_USR | USTYPE_SMB_GRP | USTYPE_SMB_USR)
2249
2250 static int us_type_bits[] = {
2251         USTYPE_PSX_GRP,
2252         USTYPE_PSX_USR,
2253         USTYPE_SMB_GRP,
2254         USTYPE_SMB_USR,
2255         USTYPE_ALL
2256 };
2257 static char *us_type_names[] = { "posixgroup", "posixuser", "smbgroup",
2258         "smbuser", "all" };
2259
2260 typedef struct us_node {
2261         nvlist_t        *usn_nvl;
2262         uu_avl_node_t   usn_avlnode;
2263         uu_list_node_t  usn_listnode;
2264 } us_node_t;
2265
2266 typedef struct us_cbdata {
2267         nvlist_t        **cb_nvlp;
2268         uu_avl_pool_t   *cb_avl_pool;
2269         uu_avl_t        *cb_avl;
2270         boolean_t       cb_numname;
2271         boolean_t       cb_nicenum;
2272         boolean_t       cb_sid2posix;
2273         zfs_userquota_prop_t cb_prop;
2274         zfs_sort_column_t *cb_sortcol;
2275         size_t          cb_width[USFIELD_LAST];
2276 } us_cbdata_t;
2277
2278 static boolean_t us_populated = B_FALSE;
2279
2280 typedef struct {
2281         zfs_sort_column_t *si_sortcol;
2282         boolean_t       si_numname;
2283 } us_sort_info_t;
2284
2285 static int
2286 us_field_index(char *field)
2287 {
2288         int i;
2289
2290         for (i = 0; i < USFIELD_LAST; i++) {
2291                 if (strcmp(field, us_field_names[i]) == 0)
2292                         return (i);
2293         }
2294
2295         return (-1);
2296 }
2297
2298 static int
2299 us_compare(const void *larg, const void *rarg, void *unused)
2300 {
2301         const us_node_t *l = larg;
2302         const us_node_t *r = rarg;
2303         us_sort_info_t *si = (us_sort_info_t *)unused;
2304         zfs_sort_column_t *sortcol = si->si_sortcol;
2305         boolean_t numname = si->si_numname;
2306         nvlist_t *lnvl = l->usn_nvl;
2307         nvlist_t *rnvl = r->usn_nvl;
2308         int rc = 0;
2309         boolean_t lvb, rvb;
2310
2311         for (; sortcol != NULL; sortcol = sortcol->sc_next) {
2312                 char *lvstr = "";
2313                 char *rvstr = "";
2314                 uint32_t lv32 = 0;
2315                 uint32_t rv32 = 0;
2316                 uint64_t lv64 = 0;
2317                 uint64_t rv64 = 0;
2318                 zfs_prop_t prop = sortcol->sc_prop;
2319                 const char *propname = NULL;
2320                 boolean_t reverse = sortcol->sc_reverse;
2321
2322                 switch (prop) {
2323                 case ZFS_PROP_TYPE:
2324                         propname = "type";
2325                         (void) nvlist_lookup_uint32(lnvl, propname, &lv32);
2326                         (void) nvlist_lookup_uint32(rnvl, propname, &rv32);
2327                         if (rv32 != lv32)
2328                                 rc = (rv32 < lv32) ? 1 : -1;
2329                         break;
2330                 case ZFS_PROP_NAME:
2331                         propname = "name";
2332                         if (numname) {
2333                                 (void) nvlist_lookup_uint64(lnvl, propname,
2334                                     &lv64);
2335                                 (void) nvlist_lookup_uint64(rnvl, propname,
2336                                     &rv64);
2337                                 if (rv64 != lv64)
2338                                         rc = (rv64 < lv64) ? 1 : -1;
2339                         } else {
2340                                 (void) nvlist_lookup_string(lnvl, propname,
2341                                     &lvstr);
2342                                 (void) nvlist_lookup_string(rnvl, propname,
2343                                     &rvstr);
2344                                 rc = strcmp(lvstr, rvstr);
2345                         }
2346                         break;
2347                 case ZFS_PROP_USED:
2348                 case ZFS_PROP_QUOTA:
2349                         if (!us_populated)
2350                                 break;
2351                         if (prop == ZFS_PROP_USED)
2352                                 propname = "used";
2353                         else
2354                                 propname = "quota";
2355                         (void) nvlist_lookup_uint64(lnvl, propname, &lv64);
2356                         (void) nvlist_lookup_uint64(rnvl, propname, &rv64);
2357                         if (rv64 != lv64)
2358                                 rc = (rv64 < lv64) ? 1 : -1;
2359                         break;
2360                 }
2361
2362                 if (rc != 0) {
2363                         if (rc < 0)
2364                                 return (reverse ? 1 : -1);
2365                         else
2366                                 return (reverse ? -1 : 1);
2367                 }
2368         }
2369
2370         /*
2371          * If entries still seem to be the same, check if they are of the same
2372          * type (smbentity is added only if we are doing SID to POSIX ID
2373          * translation where we can have duplicate type/name combinations).
2374          */
2375         if (nvlist_lookup_boolean_value(lnvl, "smbentity", &lvb) == 0 &&
2376             nvlist_lookup_boolean_value(rnvl, "smbentity", &rvb) == 0 &&
2377             lvb != rvb)
2378                 return (lvb < rvb ? -1 : 1);
2379
2380         return (0);
2381 }
2382
2383 static inline const char *
2384 us_type2str(unsigned field_type)
2385 {
2386         switch (field_type) {
2387         case USTYPE_PSX_USR:
2388                 return ("POSIX User");
2389         case USTYPE_PSX_GRP:
2390                 return ("POSIX Group");
2391         case USTYPE_SMB_USR:
2392                 return ("SMB User");
2393         case USTYPE_SMB_GRP:
2394                 return ("SMB Group");
2395         default:
2396                 return ("Undefined");
2397         }
2398 }
2399
2400 static int
2401 userspace_cb(void *arg, const char *domain, uid_t rid, uint64_t space)
2402 {
2403         us_cbdata_t *cb = (us_cbdata_t *)arg;
2404         zfs_userquota_prop_t prop = cb->cb_prop;
2405         char *name = NULL;
2406         char *propname;
2407         char sizebuf[32];
2408         us_node_t *node;
2409         uu_avl_pool_t *avl_pool = cb->cb_avl_pool;
2410         uu_avl_t *avl = cb->cb_avl;
2411         uu_avl_index_t idx;
2412         nvlist_t *props;
2413         us_node_t *n;
2414         zfs_sort_column_t *sortcol = cb->cb_sortcol;
2415         unsigned type;
2416         const char *typestr;
2417         size_t namelen;
2418         size_t typelen;
2419         size_t sizelen;
2420         int typeidx, nameidx, sizeidx;
2421         us_sort_info_t sortinfo = { sortcol, cb->cb_numname };
2422         boolean_t smbentity = B_FALSE;
2423
2424         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
2425                 nomem();
2426         node = safe_malloc(sizeof (us_node_t));
2427         uu_avl_node_init(node, &node->usn_avlnode, avl_pool);
2428         node->usn_nvl = props;
2429
2430         if (domain != NULL && domain[0] != '\0') {
2431                 /* SMB */
2432                 char sid[ZFS_MAXNAMELEN + 32];
2433                 uid_t id;
2434 #ifdef sun
2435                 int err;
2436                 int flag = IDMAP_REQ_FLG_USE_CACHE;
2437 #endif
2438
2439                 smbentity = B_TRUE;
2440
2441                 (void) snprintf(sid, sizeof (sid), "%s-%u", domain, rid);
2442
2443                 if (prop == ZFS_PROP_GROUPUSED || prop == ZFS_PROP_GROUPQUOTA) {
2444                         type = USTYPE_SMB_GRP;
2445 #ifdef sun
2446                         err = sid_to_id(sid, B_FALSE, &id);
2447 #endif
2448                 } else {
2449                         type = USTYPE_SMB_USR;
2450 #ifdef sun
2451                         err = sid_to_id(sid, B_TRUE, &id);
2452 #endif
2453                 }
2454
2455 #ifdef sun
2456                 if (err == 0) {
2457                         rid = id;
2458                         if (!cb->cb_sid2posix) {
2459                                 if (type == USTYPE_SMB_USR) {
2460                                         (void) idmap_getwinnamebyuid(rid, flag,
2461                                             &name, NULL);
2462                                 } else {
2463                                         (void) idmap_getwinnamebygid(rid, flag,
2464                                             &name, NULL);
2465                                 }
2466                                 if (name == NULL)
2467                                         name = sid;
2468                         }
2469                 }
2470 #endif
2471         }
2472
2473         if (cb->cb_sid2posix || domain == NULL || domain[0] == '\0') {
2474                 /* POSIX or -i */
2475                 if (prop == ZFS_PROP_GROUPUSED || prop == ZFS_PROP_GROUPQUOTA) {
2476                         type = USTYPE_PSX_GRP;
2477                         if (!cb->cb_numname) {
2478                                 struct group *g;
2479
2480                                 if ((g = getgrgid(rid)) != NULL)
2481                                         name = g->gr_name;
2482                         }
2483                 } else {
2484                         type = USTYPE_PSX_USR;
2485                         if (!cb->cb_numname) {
2486                                 struct passwd *p;
2487
2488                                 if ((p = getpwuid(rid)) != NULL)
2489                                         name = p->pw_name;
2490                         }
2491                 }
2492         }
2493
2494         /*
2495          * Make sure that the type/name combination is unique when doing
2496          * SID to POSIX ID translation (hence changing the type from SMB to
2497          * POSIX).
2498          */
2499         if (cb->cb_sid2posix &&
2500             nvlist_add_boolean_value(props, "smbentity", smbentity) != 0)
2501                 nomem();
2502
2503         /* Calculate/update width of TYPE field */
2504         typestr = us_type2str(type);
2505         typelen = strlen(gettext(typestr));
2506         typeidx = us_field_index("type");
2507         if (typelen > cb->cb_width[typeidx])
2508                 cb->cb_width[typeidx] = typelen;
2509         if (nvlist_add_uint32(props, "type", type) != 0)
2510                 nomem();
2511
2512         /* Calculate/update width of NAME field */
2513         if ((cb->cb_numname && cb->cb_sid2posix) || name == NULL) {
2514                 if (nvlist_add_uint64(props, "name", rid) != 0)
2515                         nomem();
2516                 namelen = snprintf(NULL, 0, "%u", rid);
2517         } else {
2518                 if (nvlist_add_string(props, "name", name) != 0)
2519                         nomem();
2520                 namelen = strlen(name);
2521         }
2522         nameidx = us_field_index("name");
2523         if (namelen > cb->cb_width[nameidx])
2524                 cb->cb_width[nameidx] = namelen;
2525
2526         /*
2527          * Check if this type/name combination is in the list and update it;
2528          * otherwise add new node to the list.
2529          */
2530         if ((n = uu_avl_find(avl, node, &sortinfo, &idx)) == NULL) {
2531                 uu_avl_insert(avl, node, idx);
2532         } else {
2533                 nvlist_free(props);
2534                 free(node);
2535                 node = n;
2536                 props = node->usn_nvl;
2537         }
2538
2539         /* Calculate/update width of USED/QUOTA fields */
2540         if (cb->cb_nicenum)
2541                 zfs_nicenum(space, sizebuf, sizeof (sizebuf));
2542         else
2543                 (void) snprintf(sizebuf, sizeof (sizebuf), "%llu", space);
2544         sizelen = strlen(sizebuf);
2545         if (prop == ZFS_PROP_USERUSED || prop == ZFS_PROP_GROUPUSED) {
2546                 propname = "used";
2547                 if (!nvlist_exists(props, "quota"))
2548                         (void) nvlist_add_uint64(props, "quota", 0);
2549         } else {
2550                 propname = "quota";
2551                 if (!nvlist_exists(props, "used"))
2552                         (void) nvlist_add_uint64(props, "used", 0);
2553         }
2554         sizeidx = us_field_index(propname);
2555         if (sizelen > cb->cb_width[sizeidx])
2556                 cb->cb_width[sizeidx] = sizelen;
2557
2558         if (nvlist_add_uint64(props, propname, space) != 0)
2559                 nomem();
2560
2561         return (0);
2562 }
2563
2564 static void
2565 print_us_node(boolean_t scripted, boolean_t parsable, int *fields, int types,
2566     size_t *width, us_node_t *node)
2567 {
2568         nvlist_t *nvl = node->usn_nvl;
2569         char valstr[ZFS_MAXNAMELEN];
2570         boolean_t first = B_TRUE;
2571         int cfield = 0;
2572         int field;
2573         uint32_t ustype;
2574
2575         /* Check type */
2576         (void) nvlist_lookup_uint32(nvl, "type", &ustype);
2577         if (!(ustype & types))
2578                 return;
2579
2580         while ((field = fields[cfield]) != USFIELD_LAST) {
2581                 nvpair_t *nvp = NULL;
2582                 data_type_t type;
2583                 uint32_t val32;
2584                 uint64_t val64;
2585                 char *strval = NULL;
2586
2587                 while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
2588                         if (strcmp(nvpair_name(nvp),
2589                             us_field_names[field]) == 0)
2590                                 break;
2591                 }
2592
2593                 type = nvpair_type(nvp);
2594                 switch (type) {
2595                 case DATA_TYPE_UINT32:
2596                         (void) nvpair_value_uint32(nvp, &val32);
2597                         break;
2598                 case DATA_TYPE_UINT64:
2599                         (void) nvpair_value_uint64(nvp, &val64);
2600                         break;
2601                 case DATA_TYPE_STRING:
2602                         (void) nvpair_value_string(nvp, &strval);
2603                         break;
2604                 default:
2605                         (void) fprintf(stderr, "invalid data type\n");
2606                 }
2607
2608                 switch (field) {
2609                 case USFIELD_TYPE:
2610                         strval = (char *)us_type2str(val32);
2611                         break;
2612                 case USFIELD_NAME:
2613                         if (type == DATA_TYPE_UINT64) {
2614                                 (void) sprintf(valstr, "%llu", val64);
2615                                 strval = valstr;
2616                         }
2617                         break;
2618                 case USFIELD_USED:
2619                 case USFIELD_QUOTA:
2620                         if (type == DATA_TYPE_UINT64) {
2621                                 if (parsable) {
2622                                         (void) sprintf(valstr, "%llu", val64);
2623                                 } else {
2624                                         zfs_nicenum(val64, valstr,
2625                                             sizeof (valstr));
2626                                 }
2627                                 if (field == USFIELD_QUOTA &&
2628                                     strcmp(valstr, "0") == 0)
2629                                         strval = "none";
2630                                 else
2631                                         strval = valstr;
2632                         }
2633                         break;
2634                 }
2635
2636                 if (!first) {
2637                         if (scripted)
2638                                 (void) printf("\t");
2639                         else
2640                                 (void) printf("  ");
2641                 }
2642                 if (scripted)
2643                         (void) printf("%s", strval);
2644                 else if (field == USFIELD_TYPE || field == USFIELD_NAME)
2645                         (void) printf("%-*s", width[field], strval);
2646                 else
2647                         (void) printf("%*s", width[field], strval);
2648
2649                 first = B_FALSE;
2650                 cfield++;
2651         }
2652
2653         (void) printf("\n");
2654 }
2655
2656 static void
2657 print_us(boolean_t scripted, boolean_t parsable, int *fields, int types,
2658     size_t *width, boolean_t rmnode, uu_avl_t *avl)
2659 {
2660         us_node_t *node;
2661         const char *col;
2662         int cfield = 0;
2663         int field;
2664
2665         if (!scripted) {
2666                 boolean_t first = B_TRUE;
2667
2668                 while ((field = fields[cfield]) != USFIELD_LAST) {
2669                         col = gettext(us_field_hdr[field]);
2670                         if (field == USFIELD_TYPE || field == USFIELD_NAME) {
2671                                 (void) printf(first ? "%-*s" : "  %-*s",
2672                                     width[field], col);
2673                         } else {
2674                                 (void) printf(first ? "%*s" : "  %*s",
2675                                     width[field], col);
2676                         }
2677                         first = B_FALSE;
2678                         cfield++;
2679                 }
2680                 (void) printf("\n");
2681         }
2682
2683         for (node = uu_avl_first(avl); node; node = uu_avl_next(avl, node)) {
2684                 print_us_node(scripted, parsable, fields, types, width, node);
2685                 if (rmnode)
2686                         nvlist_free(node->usn_nvl);
2687         }
2688 }
2689
2690 static int
2691 zfs_do_userspace(int argc, char **argv)
2692 {
2693         zfs_handle_t *zhp;
2694         zfs_userquota_prop_t p;
2695
2696         uu_avl_pool_t *avl_pool;
2697         uu_avl_t *avl_tree;
2698         uu_avl_walk_t *walk;
2699         char *delim;
2700         char deffields[] = "type,name,used,quota";
2701         char *ofield = NULL;
2702         char *tfield = NULL;
2703         int cfield = 0;
2704         int fields[256];
2705         int i;
2706         boolean_t scripted = B_FALSE;
2707         boolean_t prtnum = B_FALSE;
2708         boolean_t parsable = B_FALSE;
2709         boolean_t sid2posix = B_FALSE;
2710         int ret = 0;
2711         int c;
2712         zfs_sort_column_t *sortcol = NULL;
2713         int types = USTYPE_PSX_USR | USTYPE_SMB_USR;
2714         us_cbdata_t cb;
2715         us_node_t *node;
2716         us_node_t *rmnode;
2717         uu_list_pool_t *listpool;
2718         uu_list_t *list;
2719         uu_avl_index_t idx = 0;
2720         uu_list_index_t idx2 = 0;
2721
2722         if (argc < 2)
2723                 usage(B_FALSE);
2724
2725         if (strcmp(argv[0], "groupspace") == 0)
2726                 /* Toggle default group types */
2727                 types = USTYPE_PSX_GRP | USTYPE_SMB_GRP;
2728
2729         while ((c = getopt(argc, argv, "nHpo:s:S:t:i")) != -1) {
2730                 switch (c) {
2731                 case 'n':
2732                         prtnum = B_TRUE;
2733                         break;
2734                 case 'H':
2735                         scripted = B_TRUE;
2736                         break;
2737                 case 'p':
2738                         parsable = B_TRUE;
2739                         break;
2740                 case 'o':
2741                         ofield = optarg;
2742                         break;
2743                 case 's':
2744                 case 'S':
2745                         if (zfs_add_sort_column(&sortcol, optarg,
2746                             c == 's' ? B_FALSE : B_TRUE) != 0) {
2747                                 (void) fprintf(stderr,
2748                                     gettext("invalid field '%s'\n"), optarg);
2749                                 usage(B_FALSE);
2750                         }
2751                         break;
2752                 case 't':
2753                         tfield = optarg;
2754                         break;
2755                 case 'i':
2756                         sid2posix = B_TRUE;
2757                         break;
2758                 case ':':
2759                         (void) fprintf(stderr, gettext("missing argument for "
2760                             "'%c' option\n"), optopt);
2761                         usage(B_FALSE);
2762                         break;
2763                 case '?':
2764                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2765                             optopt);
2766                         usage(B_FALSE);
2767                 }
2768         }
2769
2770         argc -= optind;
2771         argv += optind;
2772
2773         if (argc < 1) {
2774                 (void) fprintf(stderr, gettext("missing dataset name\n"));
2775                 usage(B_FALSE);
2776         }
2777         if (argc > 1) {
2778                 (void) fprintf(stderr, gettext("too many arguments\n"));
2779                 usage(B_FALSE);
2780         }
2781
2782         /* Use default output fields if not specified using -o */
2783         if (ofield == NULL)
2784                 ofield = deffields;
2785         do {
2786                 if ((delim = strchr(ofield, ',')) != NULL)
2787                         *delim = '\0';
2788                 if ((fields[cfield++] = us_field_index(ofield)) == -1) {
2789                         (void) fprintf(stderr, gettext("invalid type '%s' "
2790                             "for -o option\n"), ofield);
2791                         return (-1);
2792                 }
2793                 if (delim != NULL)
2794                         ofield = delim + 1;
2795         } while (delim != NULL);
2796         fields[cfield] = USFIELD_LAST;
2797
2798         /* Override output types (-t option) */
2799         if (tfield != NULL) {
2800                 types = 0;
2801
2802                 do {
2803                         boolean_t found = B_FALSE;
2804
2805                         if ((delim = strchr(tfield, ',')) != NULL)
2806                                 *delim = '\0';
2807                         for (i = 0; i < sizeof (us_type_bits) / sizeof (int);
2808                             i++) {
2809                                 if (strcmp(tfield, us_type_names[i]) == 0) {
2810                                         found = B_TRUE;
2811                                         types |= us_type_bits[i];
2812                                         break;
2813                                 }
2814                         }
2815                         if (!found) {
2816                                 (void) fprintf(stderr, gettext("invalid type "
2817                                     "'%s' for -t option\n"), tfield);
2818                                 return (-1);
2819                         }
2820                         if (delim != NULL)
2821                                 tfield = delim + 1;
2822                 } while (delim != NULL);
2823         }
2824
2825         if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL)
2826                 return (1);
2827
2828         if ((avl_pool = uu_avl_pool_create("us_avl_pool", sizeof (us_node_t),
2829             offsetof(us_node_t, usn_avlnode), us_compare, UU_DEFAULT)) == NULL)
2830                 nomem();
2831         if ((avl_tree = uu_avl_create(avl_pool, NULL, UU_DEFAULT)) == NULL)
2832                 nomem();
2833
2834         /* Always add default sorting columns */
2835         (void) zfs_add_sort_column(&sortcol, "type", B_FALSE);
2836         (void) zfs_add_sort_column(&sortcol, "name", B_FALSE);
2837
2838         cb.cb_sortcol = sortcol;
2839         cb.cb_numname = prtnum;
2840         cb.cb_nicenum = !parsable;
2841         cb.cb_avl_pool = avl_pool;
2842         cb.cb_avl = avl_tree;
2843         cb.cb_sid2posix = sid2posix;
2844
2845         for (i = 0; i < USFIELD_LAST; i++)
2846                 cb.cb_width[i] = strlen(gettext(us_field_hdr[i]));
2847
2848         for (p = 0; p < ZFS_NUM_USERQUOTA_PROPS; p++) {
2849                 if (((p == ZFS_PROP_USERUSED || p == ZFS_PROP_USERQUOTA) &&
2850                     !(types & (USTYPE_PSX_USR | USTYPE_SMB_USR))) ||
2851                     ((p == ZFS_PROP_GROUPUSED || p == ZFS_PROP_GROUPQUOTA) &&
2852                     !(types & (USTYPE_PSX_GRP | USTYPE_SMB_GRP))))
2853                         continue;
2854                 cb.cb_prop = p;
2855                 if ((ret = zfs_userspace(zhp, p, userspace_cb, &cb)) != 0)
2856                         return (ret);
2857         }
2858
2859         /* Sort the list */
2860         if ((node = uu_avl_first(avl_tree)) == NULL)
2861                 return (0);
2862
2863         us_populated = B_TRUE;
2864
2865         listpool = uu_list_pool_create("tmplist", sizeof (us_node_t),
2866             offsetof(us_node_t, usn_listnode), NULL, UU_DEFAULT);
2867         list = uu_list_create(listpool, NULL, UU_DEFAULT);
2868         uu_list_node_init(node, &node->usn_listnode, listpool);
2869
2870         while (node != NULL) {
2871                 rmnode = node;
2872                 node = uu_avl_next(avl_tree, node);
2873                 uu_avl_remove(avl_tree, rmnode);
2874                 if (uu_list_find(list, rmnode, NULL, &idx2) == NULL)
2875                         uu_list_insert(list, rmnode, idx2);
2876         }
2877
2878         for (node = uu_list_first(list); node != NULL;
2879             node = uu_list_next(list, node)) {
2880                 us_sort_info_t sortinfo = { sortcol, cb.cb_numname };
2881
2882                 if (uu_avl_find(avl_tree, node, &sortinfo, &idx) == NULL)
2883                         uu_avl_insert(avl_tree, node, idx);
2884         }
2885
2886         uu_list_destroy(list);
2887         uu_list_pool_destroy(listpool);
2888
2889         /* Print and free node nvlist memory */
2890         print_us(scripted, parsable, fields, types, cb.cb_width, B_TRUE,
2891             cb.cb_avl);
2892
2893         zfs_free_sort_columns(sortcol);
2894
2895         /* Clean up the AVL tree */
2896         if ((walk = uu_avl_walk_start(cb.cb_avl, UU_WALK_ROBUST)) == NULL)
2897                 nomem();
2898
2899         while ((node = uu_avl_walk_next(walk)) != NULL) {
2900                 uu_avl_remove(cb.cb_avl, node);
2901                 free(node);
2902         }
2903
2904         uu_avl_walk_end(walk);
2905         uu_avl_destroy(avl_tree);
2906         uu_avl_pool_destroy(avl_pool);
2907
2908         return (ret);
2909 }
2910
2911 /*
2912  * list [-Hp][-r|-d max] [-o property[,...]] [-s property] ... [-S property] ...
2913  *      [-t type[,...]] [filesystem|volume|snapshot] ...
2914  *
2915  *      -H      Scripted mode; elide headers and separate columns by tabs.
2916  *      -p      Display values in parsable (literal) format.
2917  *      -r      Recurse over all children.
2918  *      -d      Limit recursion by depth.
2919  *      -o      Control which fields to display.
2920  *      -s      Specify sort columns, descending order.
2921  *      -S      Specify sort columns, ascending order.
2922  *      -t      Control which object types to display.
2923  *
2924  * When given no arguments, list all filesystems in the system.
2925  * Otherwise, list the specified datasets, optionally recursing down them if
2926  * '-r' is specified.
2927  */
2928 typedef struct list_cbdata {
2929         boolean_t       cb_first;
2930         boolean_t       cb_literal;
2931         boolean_t       cb_scripted;
2932         zprop_list_t    *cb_proplist;
2933 } list_cbdata_t;
2934
2935 /*
2936  * Given a list of columns to display, output appropriate headers for each one.
2937  */
2938 static void
2939 print_header(list_cbdata_t *cb)
2940 {
2941         zprop_list_t *pl = cb->cb_proplist;
2942         char headerbuf[ZFS_MAXPROPLEN];
2943         const char *header;
2944         int i;
2945         boolean_t first = B_TRUE;
2946         boolean_t right_justify;
2947
2948         for (; pl != NULL; pl = pl->pl_next) {
2949                 if (!first) {
2950                         (void) printf("  ");
2951                 } else {
2952                         first = B_FALSE;
2953                 }
2954
2955                 right_justify = B_FALSE;
2956                 if (pl->pl_prop != ZPROP_INVAL) {
2957                         header = zfs_prop_column_name(pl->pl_prop);
2958                         right_justify = zfs_prop_align_right(pl->pl_prop);
2959                 } else {
2960                         for (i = 0; pl->pl_user_prop[i] != '\0'; i++)
2961                                 headerbuf[i] = toupper(pl->pl_user_prop[i]);
2962                         headerbuf[i] = '\0';
2963                         header = headerbuf;
2964                 }
2965
2966                 if (pl->pl_next == NULL && !right_justify)
2967                         (void) printf("%s", header);
2968                 else if (right_justify)
2969                         (void) printf("%*s", pl->pl_width, header);
2970                 else
2971                         (void) printf("%-*s", pl->pl_width, header);
2972         }
2973
2974         (void) printf("\n");
2975 }
2976
2977 /*
2978  * Given a dataset and a list of fields, print out all the properties according
2979  * to the described layout.
2980  */
2981 static void
2982 print_dataset(zfs_handle_t *zhp, list_cbdata_t *cb)
2983 {
2984         zprop_list_t *pl = cb->cb_proplist;
2985         boolean_t first = B_TRUE;
2986         char property[ZFS_MAXPROPLEN];
2987         nvlist_t *userprops = zfs_get_user_props(zhp);
2988         nvlist_t *propval;
2989         char *propstr;
2990         boolean_t right_justify;
2991
2992         for (; pl != NULL; pl = pl->pl_next) {
2993                 if (!first) {
2994                         if (cb->cb_scripted)
2995                                 (void) printf("\t");
2996                         else
2997                                 (void) printf("  ");
2998                 } else {
2999                         first = B_FALSE;
3000                 }
3001
3002                 if (pl->pl_prop == ZFS_PROP_NAME) {
3003                         (void) strlcpy(property, zfs_get_name(zhp),
3004                             sizeof(property));
3005                         propstr = property;
3006                         right_justify = zfs_prop_align_right(pl->pl_prop);
3007                 } else if (pl->pl_prop != ZPROP_INVAL) {
3008                         if (zfs_prop_get(zhp, pl->pl_prop, property,
3009                             sizeof (property), NULL, NULL, 0,
3010                             cb->cb_literal) != 0)
3011                                 propstr = "-";
3012                         else
3013                                 propstr = property;
3014                         right_justify = zfs_prop_align_right(pl->pl_prop);
3015                 } else if (zfs_prop_userquota(pl->pl_user_prop)) {
3016                         if (zfs_prop_get_userquota(zhp, pl->pl_user_prop,
3017                             property, sizeof (property), cb->cb_literal) != 0)
3018                                 propstr = "-";
3019                         else
3020                                 propstr = property;
3021                         right_justify = B_TRUE;
3022                 } else if (zfs_prop_written(pl->pl_user_prop)) {
3023                         if (zfs_prop_get_written(zhp, pl->pl_user_prop,
3024                             property, sizeof (property), cb->cb_literal) != 0)
3025                                 propstr = "-";
3026                         else
3027                                 propstr = property;
3028                         right_justify = B_TRUE;
3029                 } else {
3030                         if (nvlist_lookup_nvlist(userprops,
3031                             pl->pl_user_prop, &propval) != 0)
3032                                 propstr = "-";
3033                         else
3034                                 verify(nvlist_lookup_string(propval,
3035                                     ZPROP_VALUE, &propstr) == 0);
3036                         right_justify = B_FALSE;
3037                 }
3038
3039                 /*
3040                  * If this is being called in scripted mode, or if this is the
3041                  * last column and it is left-justified, don't include a width
3042                  * format specifier.
3043                  */
3044                 if (cb->cb_scripted || (pl->pl_next == NULL && !right_justify))
3045                         (void) printf("%s", propstr);
3046                 else if (right_justify)
3047                         (void) printf("%*s", pl->pl_width, propstr);
3048                 else
3049                         (void) printf("%-*s", pl->pl_width, propstr);
3050         }
3051
3052         (void) printf("\n");
3053 }
3054
3055 /*
3056  * Generic callback function to list a dataset or snapshot.
3057  */
3058 static int
3059 list_callback(zfs_handle_t *zhp, void *data)
3060 {
3061         list_cbdata_t *cbp = data;
3062
3063         if (cbp->cb_first) {
3064                 if (!cbp->cb_scripted)
3065                         print_header(cbp);
3066                 cbp->cb_first = B_FALSE;
3067         }
3068
3069         print_dataset(zhp, cbp);
3070
3071         return (0);
3072 }
3073
3074 static int
3075 zfs_do_list(int argc, char **argv)
3076 {
3077         int c;
3078         static char default_fields[] =
3079             "name,used,available,referenced,mountpoint";
3080         int types = ZFS_TYPE_DATASET;
3081         boolean_t types_specified = B_FALSE;
3082         char *fields = NULL;
3083         list_cbdata_t cb = { 0 };
3084         char *value;
3085         int limit = 0;
3086         int ret = 0;
3087         zfs_sort_column_t *sortcol = NULL;
3088         int flags = ZFS_ITER_PROP_LISTSNAPS | ZFS_ITER_ARGS_CAN_BE_PATHS;
3089
3090         /* check options */
3091         while ((c = getopt(argc, argv, "HS:d:o:prs:t:")) != -1) {
3092                 switch (c) {
3093                 case 'o':
3094                         fields = optarg;
3095                         break;
3096                 case 'p':
3097                         cb.cb_literal = B_TRUE;
3098                         flags |= ZFS_ITER_LITERAL_PROPS;
3099                         break;
3100                 case 'd':
3101                         limit = parse_depth(optarg, &flags);
3102                         break;
3103                 case 'r':
3104                         flags |= ZFS_ITER_RECURSE;
3105                         break;
3106                 case 'H':
3107                         cb.cb_scripted = B_TRUE;
3108                         break;
3109                 case 's':
3110                         if (zfs_add_sort_column(&sortcol, optarg,
3111                             B_FALSE) != 0) {
3112                                 (void) fprintf(stderr,
3113                                     gettext("invalid property '%s'\n"), optarg);
3114                                 usage(B_FALSE);
3115                         }
3116                         break;
3117                 case 'S':
3118                         if (zfs_add_sort_column(&sortcol, optarg,
3119                             B_TRUE) != 0) {
3120                                 (void) fprintf(stderr,
3121                                     gettext("invalid property '%s'\n"), optarg);
3122                                 usage(B_FALSE);
3123                         }
3124                         break;
3125                 case 't':
3126                         types = 0;
3127                         types_specified = B_TRUE;
3128                         flags &= ~ZFS_ITER_PROP_LISTSNAPS;
3129                         while (*optarg != '\0') {
3130                                 static char *type_subopts[] = { "filesystem",
3131                                     "volume", "snapshot", "snap", "bookmark",
3132                                     "all", NULL };
3133
3134                                 switch (getsubopt(&optarg, type_subopts,
3135                                     &value)) {
3136                                 case 0:
3137                                         types |= ZFS_TYPE_FILESYSTEM;
3138                                         break;
3139                                 case 1:
3140                                         types |= ZFS_TYPE_VOLUME;
3141                                         break;
3142                                 case 2:
3143                                 case 3:
3144                                         types |= ZFS_TYPE_SNAPSHOT;
3145                                         break;
3146                                 case 4:
3147                                         types |= ZFS_TYPE_BOOKMARK;
3148                                         break;
3149                                 case 5:
3150                                         types = ZFS_TYPE_DATASET |
3151                                             ZFS_TYPE_BOOKMARK;
3152                                         break;
3153                                 default:
3154                                         (void) fprintf(stderr,
3155                                             gettext("invalid type '%s'\n"),
3156                                             value);
3157                                         usage(B_FALSE);
3158                                 }
3159                         }
3160                         break;
3161                 case ':':
3162                         (void) fprintf(stderr, gettext("missing argument for "
3163                             "'%c' option\n"), optopt);
3164                         usage(B_FALSE);
3165                         break;
3166                 case '?':
3167                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3168                             optopt);
3169                         usage(B_FALSE);
3170                 }
3171         }
3172
3173         argc -= optind;
3174         argv += optind;
3175
3176         if (fields == NULL)
3177                 fields = default_fields;
3178
3179         /*
3180          * If we are only going to list snapshot names and sort by name,
3181          * then we can use faster version.
3182          */
3183         if (strcmp(fields, "name") == 0 && zfs_sort_only_by_name(sortcol))
3184                 flags |= ZFS_ITER_SIMPLE;
3185
3186         /*
3187          * If "-o space" and no types were specified, don't display snapshots.
3188          */
3189         if (strcmp(fields, "space") == 0 && types_specified == B_FALSE)
3190                 types &= ~ZFS_TYPE_SNAPSHOT;
3191
3192         /*
3193          * If the user specifies '-o all', the zprop_get_list() doesn't
3194          * normally include the name of the dataset.  For 'zfs list', we always
3195          * want this property to be first.
3196          */
3197         if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
3198             != 0)
3199                 usage(B_FALSE);
3200
3201         cb.cb_first = B_TRUE;
3202
3203         ret = zfs_for_each(argc, argv, flags, types, sortcol, &cb.cb_proplist,
3204             limit, list_callback, &cb);
3205
3206         zprop_free_list(cb.cb_proplist);
3207         zfs_free_sort_columns(sortcol);
3208
3209         if (ret == 0 && cb.cb_first && !cb.cb_scripted)
3210                 (void) printf(gettext("no datasets available\n"));
3211
3212         return (ret);
3213 }
3214
3215 /*
3216  * zfs rename [-f] <fs | snap | vol> <fs | snap | vol>
3217  * zfs rename [-f] -p <fs | vol> <fs | vol>
3218  * zfs rename -r <snap> <snap>
3219  * zfs rename -u [-p] <fs> <fs>
3220  *
3221  * Renames the given dataset to another of the same type.
3222  *
3223  * The '-p' flag creates all the non-existing ancestors of the target first.
3224  */
3225 /* ARGSUSED */
3226 static int
3227 zfs_do_rename(int argc, char **argv)
3228 {
3229         zfs_handle_t *zhp;
3230         renameflags_t flags = { 0 };
3231         int c;
3232         int ret = 0;
3233         int types;
3234         boolean_t parents = B_FALSE;
3235         char *snapshot = NULL;
3236
3237         /* check options */
3238         while ((c = getopt(argc, argv, "fpru")) != -1) {
3239                 switch (c) {
3240                 case 'p':
3241                         parents = B_TRUE;
3242                         break;
3243                 case 'r':
3244                         flags.recurse = B_TRUE;
3245                         break;
3246                 case 'u':
3247                         flags.nounmount = B_TRUE;
3248                         break;
3249                 case 'f':
3250                         flags.forceunmount = B_TRUE;
3251                         break;
3252                 case '?':
3253                 default:
3254                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3255                             optopt);
3256                         usage(B_FALSE);
3257                 }
3258         }
3259
3260         argc -= optind;
3261         argv += optind;
3262
3263         /* check number of arguments */
3264         if (argc < 1) {
3265                 (void) fprintf(stderr, gettext("missing source dataset "
3266                     "argument\n"));
3267                 usage(B_FALSE);
3268         }
3269         if (argc < 2) {
3270                 (void) fprintf(stderr, gettext("missing target dataset "
3271                     "argument\n"));
3272                 usage(B_FALSE);
3273         }
3274         if (argc > 2) {
3275                 (void) fprintf(stderr, gettext("too many arguments\n"));
3276                 usage(B_FALSE);
3277         }
3278
3279         if (flags.recurse && parents) {
3280                 (void) fprintf(stderr, gettext("-p and -r options are mutually "
3281                     "exclusive\n"));
3282                 usage(B_FALSE);
3283         }
3284
3285         if (flags.recurse && strchr(argv[0], '@') == 0) {
3286                 (void) fprintf(stderr, gettext("source dataset for recursive "
3287                     "rename must be a snapshot\n"));
3288                 usage(B_FALSE);
3289         }
3290
3291         if (flags.nounmount && parents) {
3292                 (void) fprintf(stderr, gettext("-u and -p options are mutually "
3293                     "exclusive\n"));
3294                 usage(B_FALSE);
3295         }
3296
3297         if (flags.nounmount)
3298                 types = ZFS_TYPE_FILESYSTEM;
3299         else if (parents)
3300                 types = ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME;
3301         else
3302                 types = ZFS_TYPE_DATASET;
3303
3304         if (flags.recurse) {
3305                 /*
3306                  * When we do recursive rename we are fine when the given
3307                  * snapshot for the given dataset doesn't exist - it can
3308                  * still exists below.
3309                  */
3310
3311                 snapshot = strchr(argv[0], '@');
3312                 assert(snapshot != NULL);
3313                 *snapshot = '\0';
3314                 snapshot++;
3315         }
3316
3317         if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL)
3318                 return (1);
3319
3320         /* If we were asked and the name looks good, try to create ancestors. */
3321         if (parents && zfs_name_valid(argv[1], zfs_get_type(zhp)) &&
3322             zfs_create_ancestors(g_zfs, argv[1]) != 0) {
3323                 zfs_close(zhp);
3324                 return (1);
3325         }
3326
3327         ret = (zfs_rename(zhp, snapshot, argv[1], flags) != 0);
3328
3329         zfs_close(zhp);
3330         return (ret);
3331 }
3332
3333 /*
3334  * zfs promote <fs>
3335  *
3336  * Promotes the given clone fs to be the parent
3337  */
3338 /* ARGSUSED */
3339 static int
3340 zfs_do_promote(int argc, char **argv)
3341 {
3342         zfs_handle_t *zhp;
3343         int ret = 0;
3344
3345         /* check options */
3346         if (argc > 1 && argv[1][0] == '-') {
3347                 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3348                     argv[1][1]);
3349                 usage(B_FALSE);
3350         }
3351
3352         /* check number of arguments */
3353         if (argc < 2) {
3354                 (void) fprintf(stderr, gettext("missing clone filesystem"
3355                     " argument\n"));
3356                 usage(B_FALSE);
3357         }
3358         if (argc > 2) {
3359                 (void) fprintf(stderr, gettext("too many arguments\n"));
3360                 usage(B_FALSE);
3361         }
3362
3363         zhp = zfs_open(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3364         if (zhp == NULL)
3365                 return (1);
3366
3367         ret = (zfs_promote(zhp) != 0);
3368
3369
3370         zfs_close(zhp);
3371         return (ret);
3372 }
3373
3374 /*
3375  * zfs rollback [-rRf] <snapshot>
3376  *
3377  *      -r      Delete any intervening snapshots before doing rollback
3378  *      -R      Delete any snapshots and their clones
3379  *      -f      ignored for backwards compatability
3380  *
3381  * Given a filesystem, rollback to a specific snapshot, discarding any changes
3382  * since then and making it the active dataset.  If more recent snapshots exist,
3383  * the command will complain unless the '-r' flag is given.
3384  */
3385 typedef struct rollback_cbdata {
3386         uint64_t        cb_create;
3387         boolean_t       cb_first;
3388         int             cb_doclones;
3389         char            *cb_target;
3390         int             cb_error;
3391         boolean_t       cb_recurse;
3392 } rollback_cbdata_t;
3393
3394 static int
3395 rollback_check_dependent(zfs_handle_t *zhp, void *data)
3396 {
3397         rollback_cbdata_t *cbp = data;
3398
3399         if (cbp->cb_first && cbp->cb_recurse) {
3400                 (void) fprintf(stderr, gettext("cannot rollback to "
3401                     "'%s': clones of previous snapshots exist\n"),
3402                     cbp->cb_target);
3403                 (void) fprintf(stderr, gettext("use '-R' to "
3404                     "force deletion of the following clones and "
3405                     "dependents:\n"));
3406                 cbp->cb_first = 0;
3407                 cbp->cb_error = 1;
3408         }
3409
3410         (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
3411
3412         zfs_close(zhp);
3413         return (0);
3414 }
3415
3416 /*
3417  * Report any snapshots more recent than the one specified.  Used when '-r' is
3418  * not specified.  We reuse this same callback for the snapshot dependents - if
3419  * 'cb_dependent' is set, then this is a dependent and we should report it
3420  * without checking the transaction group.
3421  */
3422 static int
3423 rollback_check(zfs_handle_t *zhp, void *data)
3424 {
3425         rollback_cbdata_t *cbp = data;
3426
3427         if (cbp->cb_doclones) {
3428                 zfs_close(zhp);
3429                 return (0);
3430         }
3431
3432         if (zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > cbp->cb_create) {
3433                 if (cbp->cb_first && !cbp->cb_recurse) {
3434                         (void) fprintf(stderr, gettext("cannot "
3435                             "rollback to '%s': more recent snapshots "
3436                             "or bookmarks exist\n"),
3437                             cbp->cb_target);
3438                         (void) fprintf(stderr, gettext("use '-r' to "
3439                             "force deletion of the following "
3440                             "snapshots and bookmarks:\n"));
3441                         cbp->cb_first = 0;
3442                         cbp->cb_error = 1;
3443                 }
3444
3445                 if (cbp->cb_recurse) {
3446                         if (zfs_iter_dependents(zhp, B_TRUE,
3447                             rollback_check_dependent, cbp) != 0) {
3448                                 zfs_close(zhp);
3449                                 return (-1);
3450                         }
3451                 } else {
3452                         (void) fprintf(stderr, "%s\n",
3453                             zfs_get_name(zhp));
3454                 }
3455         }
3456         zfs_close(zhp);
3457         return (0);
3458 }
3459
3460 static int
3461 zfs_do_rollback(int argc, char **argv)
3462 {
3463         int ret = 0;
3464         int c;
3465         boolean_t force = B_FALSE;
3466         rollback_cbdata_t cb = { 0 };
3467         zfs_handle_t *zhp, *snap;
3468         char parentname[ZFS_MAXNAMELEN];
3469         char *delim;
3470
3471         /* check options */
3472         while ((c = getopt(argc, argv, "rRf")) != -1) {
3473                 switch (c) {
3474                 case 'r':
3475                         cb.cb_recurse = 1;
3476                         break;
3477                 case 'R':
3478                         cb.cb_recurse = 1;
3479                         cb.cb_doclones = 1;
3480                         break;
3481                 case 'f':
3482                         force = B_TRUE;
3483                         break;
3484                 case '?':
3485                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3486                             optopt);
3487                         usage(B_FALSE);
3488                 }
3489         }
3490
3491         argc -= optind;
3492         argv += optind;
3493
3494         /* check number of arguments */
3495         if (argc < 1) {
3496                 (void) fprintf(stderr, gettext("missing dataset argument\n"));
3497                 usage(B_FALSE);
3498         }
3499         if (argc > 1) {
3500                 (void) fprintf(stderr, gettext("too many arguments\n"));
3501                 usage(B_FALSE);
3502         }
3503
3504         /* open the snapshot */
3505         if ((snap = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
3506                 return (1);
3507
3508         /* open the parent dataset */
3509         (void) strlcpy(parentname, argv[0], sizeof (parentname));
3510         verify((delim = strrchr(parentname, '@')) != NULL);
3511         *delim = '\0';
3512         if ((zhp = zfs_open(g_zfs, parentname, ZFS_TYPE_DATASET)) == NULL) {
3513                 zfs_close(snap);
3514                 return (1);
3515         }
3516
3517         /*
3518          * Check for more recent snapshots and/or clones based on the presence
3519          * of '-r' and '-R'.
3520          */
3521         cb.cb_target = argv[0];
3522         cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG);
3523         cb.cb_first = B_TRUE;
3524         cb.cb_error = 0;
3525         if ((ret = zfs_iter_snapshots(zhp, B_FALSE, rollback_check, &cb)) != 0)
3526                 goto out;
3527         if ((ret = zfs_iter_bookmarks(zhp, rollback_check, &cb)) != 0)
3528                 goto out;
3529
3530         if ((ret = cb.cb_error) != 0)
3531                 goto out;
3532
3533         /*
3534          * Rollback parent to the given snapshot.
3535          */
3536         ret = zfs_rollback(zhp, snap, force);
3537
3538 out:
3539         zfs_close(snap);
3540         zfs_close(zhp);
3541
3542         if (ret == 0)
3543                 return (0);
3544         else
3545                 return (1);
3546 }
3547
3548 /*
3549  * zfs set property=value ... { fs | snap | vol } ...
3550  *
3551  * Sets the given properties for all datasets specified on the command line.
3552  */
3553
3554 static int
3555 set_callback(zfs_handle_t *zhp, void *data)
3556 {
3557         nvlist_t *props = data;
3558
3559         if (zfs_prop_set_list(zhp, props) != 0) {
3560                 switch (libzfs_errno(g_zfs)) {
3561                 case EZFS_MOUNTFAILED:
3562                         (void) fprintf(stderr, gettext("property may be set "
3563                             "but unable to remount filesystem\n"));
3564                         break;
3565                 case EZFS_SHARENFSFAILED:
3566                         (void) fprintf(stderr, gettext("property may be set "
3567                             "but unable to reshare filesystem\n"));
3568                         break;
3569                 }
3570                 return (1);
3571         }
3572         return (0);
3573 }
3574
3575 static int
3576 zfs_do_set(int argc, char **argv)
3577 {
3578         nvlist_t *props = NULL;
3579         int ds_start = -1; /* argv idx of first dataset arg */
3580         int ret = 0;
3581
3582         /* check for options */
3583         if (argc > 1 && argv[1][0] == '-') {
3584                 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3585                     argv[1][1]);
3586                 usage(B_FALSE);
3587         }
3588
3589         /* check number of arguments */
3590         if (argc < 2) {
3591                 (void) fprintf(stderr, gettext("missing arguments\n"));
3592                 usage(B_FALSE);
3593         }
3594         if (argc < 3) {
3595                 if (strchr(argv[1], '=') == NULL) {
3596                         (void) fprintf(stderr, gettext("missing property=value "
3597                             "argument(s)\n"));
3598                 } else {
3599                         (void) fprintf(stderr, gettext("missing dataset "
3600                             "name(s)\n"));
3601                 }
3602                 usage(B_FALSE);
3603         }
3604
3605         /* validate argument order:  prop=val args followed by dataset args */
3606         for (int i = 1; i < argc; i++) {
3607                 if (strchr(argv[i], '=') != NULL) {
3608                         if (ds_start > 0) {
3609                                 /* out-of-order prop=val argument */
3610                                 (void) fprintf(stderr, gettext("invalid "
3611                                     "argument order\n"), i);
3612                                 usage(B_FALSE);
3613                         }
3614                 } else if (ds_start < 0) {
3615                         ds_start = i;
3616                 }
3617         }
3618         if (ds_start < 0) {
3619                 (void) fprintf(stderr, gettext("missing dataset name(s)\n"));
3620                 usage(B_FALSE);
3621         }
3622
3623         /* Populate a list of property settings */
3624         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
3625                 nomem();
3626         for (int i = 1; i < ds_start; i++) {
3627                 if ((ret = parseprop(props, argv[i])) != 0)
3628                         goto error;
3629         }
3630
3631         ret = zfs_for_each(argc - ds_start, argv + ds_start, 0,
3632             ZFS_TYPE_DATASET, NULL, NULL, 0, set_callback, props);
3633
3634 error:
3635         nvlist_free(props);
3636         return (ret);
3637 }
3638
3639 typedef struct snap_cbdata {
3640         nvlist_t *sd_nvl;
3641         boolean_t sd_recursive;
3642         const char *sd_snapname;
3643 } snap_cbdata_t;
3644
3645 static int
3646 zfs_snapshot_cb(zfs_handle_t *zhp, void *arg)
3647 {
3648         snap_cbdata_t *sd = arg;
3649         char *name;
3650         int rv = 0;
3651         int error;
3652
3653         if (sd->sd_recursive &&
3654             zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) != 0) {
3655                 zfs_close(zhp);
3656                 return (0);
3657         }
3658
3659         error = asprintf(&name, "%s@%s", zfs_get_name(zhp), sd->sd_snapname);
3660         if (error == -1)
3661                 nomem();
3662         fnvlist_add_boolean(sd->sd_nvl, name);
3663         free(name);
3664
3665         if (sd->sd_recursive)
3666                 rv = zfs_iter_filesystems(zhp, zfs_snapshot_cb, sd);
3667         zfs_close(zhp);
3668         return (rv);
3669 }
3670
3671 /*
3672  * zfs snapshot [-r] [-o prop=value] ... <fs@snap>
3673  *
3674  * Creates a snapshot with the given name.  While functionally equivalent to
3675  * 'zfs create', it is a separate command to differentiate intent.
3676  */
3677 static int
3678 zfs_do_snapshot(int argc, char **argv)
3679 {
3680         int ret = 0;
3681         int c;
3682         nvlist_t *props;
3683         snap_cbdata_t sd = { 0 };
3684         boolean_t multiple_snaps = B_FALSE;
3685
3686         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
3687                 nomem();
3688         if (nvlist_alloc(&sd.sd_nvl, NV_UNIQUE_NAME, 0) != 0)
3689                 nomem();
3690
3691         /* check options */
3692         while ((c = getopt(argc, argv, "ro:")) != -1) {
3693                 switch (c) {
3694                 case 'o':
3695                         if (parseprop(props, optarg) != 0)
3696                                 return (1);
3697                         break;
3698                 case 'r':
3699                         sd.sd_recursive = B_TRUE;
3700                         multiple_snaps = B_TRUE;
3701                         break;
3702                 case '?':
3703                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3704                             optopt);
3705                         goto usage;
3706                 }
3707         }
3708
3709         argc -= optind;
3710         argv += optind;
3711
3712         /* check number of arguments */
3713         if (argc < 1) {
3714                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
3715                 goto usage;
3716         }
3717
3718         if (argc > 1)
3719                 multiple_snaps = B_TRUE;
3720         for (; argc > 0; argc--, argv++) {
3721                 char *atp;
3722                 zfs_handle_t *zhp;
3723
3724                 atp = strchr(argv[0], '@');
3725                 if (atp == NULL)
3726                         goto usage;
3727                 *atp = '\0';
3728                 sd.sd_snapname = atp + 1;
3729                 zhp = zfs_open(g_zfs, argv[0],
3730                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3731                 if (zhp == NULL)
3732                         goto usage;
3733                 if (zfs_snapshot_cb(zhp, &sd) != 0)
3734                         goto usage;
3735         }
3736
3737         ret = zfs_snapshot_nvl(g_zfs, sd.sd_nvl, props);
3738         nvlist_free(sd.sd_nvl);
3739         nvlist_free(props);
3740         if (ret != 0 && multiple_snaps)
3741                 (void) fprintf(stderr, gettext("no snapshots were created\n"));
3742         return (ret != 0);
3743
3744 usage:
3745         nvlist_free(sd.sd_nvl);
3746         nvlist_free(props);
3747         usage(B_FALSE);
3748         return (-1);
3749 }
3750
3751 /*
3752  * Send a backup stream to stdout.
3753  */
3754 static int
3755 zfs_do_send(int argc, char **argv)
3756 {
3757         char *fromname = NULL;
3758         char *toname = NULL;
3759         char *resume_token = NULL;
3760         char *cp;
3761         zfs_handle_t *zhp;
3762         sendflags_t flags = { 0 };
3763         int c, err;
3764         nvlist_t *dbgnv = NULL;
3765         boolean_t extraverbose = B_FALSE;
3766
3767         /* check options */
3768         while ((c = getopt(argc, argv, ":i:I:RDpvnPLet:")) != -1) {
3769                 switch (c) {
3770                 case 'i':
3771                         if (fromname)
3772                                 usage(B_FALSE);
3773                         fromname = optarg;
3774                         break;
3775                 case 'I':
3776                         if (fromname)
3777                                 usage(B_FALSE);
3778                         fromname = optarg;
3779                         flags.doall = B_TRUE;
3780                         break;
3781                 case 'R':
3782                         flags.replicate = B_TRUE;
3783                         break;
3784                 case 'p':
3785                         flags.props = B_TRUE;
3786                         break;
3787                 case 'P':
3788                         flags.parsable = B_TRUE;
3789                         flags.verbose = B_TRUE;
3790                         break;
3791                 case 'v':
3792                         if (flags.verbose)
3793                                 extraverbose = B_TRUE;
3794                         flags.verbose = B_TRUE;
3795                         flags.progress = B_TRUE;
3796                         break;
3797                 case 'D':
3798                         flags.dedup = B_TRUE;
3799                         break;
3800                 case 'n':
3801                         flags.dryrun = B_TRUE;
3802                         break;
3803                 case 'L':
3804                         flags.largeblock = B_TRUE;
3805                         break;
3806                 case 'e':
3807                         flags.embed_data = B_TRUE;
3808                         break;
3809                 case 't':
3810                         resume_token = optarg;
3811                         break;
3812                 case ':':
3813                         (void) fprintf(stderr, gettext("missing argument for "
3814                             "'%c' option\n"), optopt);
3815                         usage(B_FALSE);
3816                         break;
3817                 case '?':
3818                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3819                             optopt);
3820                         usage(B_FALSE);
3821                 }
3822         }
3823
3824         argc -= optind;
3825         argv += optind;
3826
3827         if (resume_token != NULL) {
3828                 if (fromname != NULL || flags.replicate || flags.props ||
3829                     flags.dedup) {
3830                         (void) fprintf(stderr,
3831                             gettext("invalid flags combined with -t\n"));
3832                         usage(B_FALSE);
3833                 }
3834                 if (argc != 0) {
3835                         (void) fprintf(stderr, gettext("no additional "
3836                             "arguments are permitted with -t\n"));
3837                         usage(B_FALSE);
3838                 }
3839         } else {
3840                 if (argc < 1) {
3841                         (void) fprintf(stderr,
3842                             gettext("missing snapshot argument\n"));
3843                         usage(B_FALSE);
3844                 }
3845                 if (argc > 1) {
3846                         (void) fprintf(stderr, gettext("too many arguments\n"));
3847                         usage(B_FALSE);
3848                 }
3849         }
3850
3851         if (!flags.dryrun && isatty(STDOUT_FILENO)) {
3852                 (void) fprintf(stderr,
3853                     gettext("Error: Stream can not be written to a terminal.\n"
3854                     "You must redirect standard output.\n"));
3855                 return (1);
3856         }
3857
3858         if (resume_token != NULL) {
3859                 return (zfs_send_resume(g_zfs, &flags, STDOUT_FILENO,
3860                     resume_token));
3861         }
3862
3863         /*
3864          * Special case sending a filesystem, or from a bookmark.
3865          */
3866         if (strchr(argv[0], '@') == NULL ||
3867             (fromname && strchr(fromname, '#') != NULL)) {
3868                 char frombuf[ZFS_MAXNAMELEN];
3869                 enum lzc_send_flags lzc_flags = 0;
3870
3871                 if (flags.replicate || flags.doall || flags.props ||
3872                     flags.dedup || flags.dryrun || flags.verbose ||
3873                     flags.progress) {
3874                         (void) fprintf(stderr,
3875                             gettext("Error: "
3876                             "Unsupported flag with filesystem or bookmark.\n"));
3877                         return (1);
3878                 }
3879
3880                 zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET);
3881                 if (zhp == NULL)
3882                         return (1);
3883
3884                 if (flags.largeblock)
3885                         lzc_flags |= LZC_SEND_FLAG_LARGE_BLOCK;
3886                 if (flags.embed_data)
3887                         lzc_flags |= LZC_SEND_FLAG_EMBED_DATA;
3888
3889                 if (fromname != NULL &&
3890                     (fromname[0] == '#' || fromname[0] == '@')) {
3891                         /*
3892                          * Incremental source name begins with # or @.
3893                          * Default to same fs as target.
3894                          */
3895                         (void) strncpy(frombuf, argv[0], sizeof (frombuf));
3896                         cp = strchr(frombuf, '@');
3897                         if (cp != NULL)
3898                                 *cp = '\0';
3899                         (void) strlcat(frombuf, fromname, sizeof (frombuf));
3900                         fromname = frombuf;
3901                 }
3902                 err = zfs_send_one(zhp, fromname, STDOUT_FILENO, lzc_flags);
3903                 zfs_close(zhp);
3904                 return (err != 0);
3905         }
3906
3907         cp = strchr(argv[0], '@');
3908         *cp = '\0';
3909         toname = cp + 1;
3910         zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3911         if (zhp == NULL)
3912                 return (1);
3913
3914         /*
3915          * If they specified the full path to the snapshot, chop off
3916          * everything except the short name of the snapshot, but special
3917          * case if they specify the origin.
3918          */
3919         if (fromname && (cp = strchr(fromname, '@')) != NULL) {
3920                 char origin[ZFS_MAXNAMELEN];
3921                 zprop_source_t src;
3922
3923                 (void) zfs_prop_get(zhp, ZFS_PROP_ORIGIN,
3924                     origin, sizeof (origin), &src, NULL, 0, B_FALSE);
3925
3926                 if (strcmp(origin, fromname) == 0) {
3927                         fromname = NULL;
3928                         flags.fromorigin = B_TRUE;
3929                 } else {
3930                         *cp = '\0';
3931                         if (cp != fromname && strcmp(argv[0], fromname)) {
3932                                 (void) fprintf(stderr,
3933                                     gettext("incremental source must be "
3934                                     "in same filesystem\n"));
3935                                 usage(B_FALSE);
3936                         }
3937                         fromname = cp + 1;
3938                         if (strchr(fromname, '@') || strchr(fromname, '/')) {
3939                                 (void) fprintf(stderr,
3940                                     gettext("invalid incremental source\n"));
3941                                 usage(B_FALSE);
3942                         }
3943                 }
3944         }
3945
3946         if (flags.replicate && fromname == NULL)
3947                 flags.doall = B_TRUE;
3948
3949         err = zfs_send(zhp, fromname, toname, &flags, STDOUT_FILENO, NULL, 0,
3950             extraverbose ? &dbgnv : NULL);
3951
3952         if (extraverbose && dbgnv != NULL) {
3953                 /*
3954                  * dump_nvlist prints to stdout, but that's been
3955                  * redirected to a file.  Make it print to stderr
3956                  * instead.
3957                  */
3958                 (void) dup2(STDERR_FILENO, STDOUT_FILENO);
3959                 dump_nvlist(dbgnv, 0);
3960                 nvlist_free(dbgnv);
3961         }
3962         zfs_close(zhp);
3963
3964         return (err != 0);
3965 }
3966
3967 /*
3968  * Restore a backup stream from stdin.
3969  */
3970 static int
3971 zfs_do_receive(int argc, char **argv)
3972 {
3973         int c, err;
3974         recvflags_t flags = { 0 };
3975         boolean_t abort_resumable = B_FALSE;
3976
3977         nvlist_t *props;
3978         nvpair_t *nvp = NULL;
3979
3980         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
3981                 nomem();
3982
3983         /* check options */
3984         while ((c = getopt(argc, argv, ":o:denuvFsA")) != -1) {
3985                 switch (c) {
3986                 case 'o':
3987                         if (parseprop(props, optarg) != 0)
3988                                 return (1);
3989                         break;
3990                 case 'd':
3991                         flags.isprefix = B_TRUE;
3992                         break;
3993                 case 'e':
3994                         flags.isprefix = B_TRUE;
3995                         flags.istail = B_TRUE;
3996                         break;
3997                 case 'n':
3998                         flags.dryrun = B_TRUE;
3999                         break;
4000                 case 'u':
4001                         flags.nomount = B_TRUE;
4002                         break;
4003                 case 'v':
4004                         flags.verbose = B_TRUE;
4005                         break;
4006                 case 's':
4007                         flags.resumable = B_TRUE;
4008                         break;
4009                 case 'F':
4010                         flags.force = B_TRUE;
4011                         break;
4012                 case 'A':
4013                         abort_resumable = B_TRUE;
4014                         break;
4015                 case ':':
4016                         (void) fprintf(stderr, gettext("missing argument for "
4017                             "'%c' option\n"), optopt);
4018                         usage(B_FALSE);
4019                         break;
4020                 case '?':
4021                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
4022                             optopt);
4023                         usage(B_FALSE);
4024                 }
4025         }
4026
4027         argc -= optind;
4028         argv += optind;
4029
4030         /* check number of arguments */
4031         if (argc < 1) {
4032                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
4033                 usage(B_FALSE);
4034         }
4035         if (argc > 1) {
4036                 (void) fprintf(stderr, gettext("too many arguments\n"));
4037                 usage(B_FALSE);
4038         }
4039
4040         while ((nvp = nvlist_next_nvpair(props, nvp))) {
4041                 if (strcmp(nvpair_name(nvp), "origin") != 0) {
4042                         (void) fprintf(stderr, gettext("invalid option"));
4043                         usage(B_FALSE);
4044                 }
4045         }
4046
4047         if (abort_resumable) {
4048                 if (flags.isprefix || flags.istail || flags.dryrun ||
4049                     flags.resumable || flags.nomount) {
4050                         (void) fprintf(stderr, gettext("invalid option"));
4051                         usage(B_FALSE);
4052                 }
4053
4054                 char namebuf[ZFS_MAXNAMELEN];
4055                 (void) snprintf(namebuf, sizeof (namebuf),
4056                     "%s/%%recv", argv[0]);
4057
4058                 if (zfs_dataset_exists(g_zfs, namebuf,
4059                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME)) {
4060                         zfs_handle_t *zhp = zfs_open(g_zfs,
4061                             namebuf, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
4062                         if (zhp == NULL)
4063                                 return (1);
4064                         err = zfs_destroy(zhp, B_FALSE);
4065                 } else {
4066                         zfs_handle_t *zhp = zfs_open(g_zfs,
4067                             argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
4068                         if (zhp == NULL)
4069                                 usage(B_FALSE);
4070                         if (!zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) ||
4071                             zfs_prop_get(zhp, ZFS_PROP_RECEIVE_RESUME_TOKEN,
4072                             NULL, 0, NULL, NULL, 0, B_TRUE) == -1) {
4073                                 (void) fprintf(stderr,
4074                                     gettext("'%s' does not have any "
4075                                     "resumable receive state to abort\n"),
4076                                     argv[0]);
4077                                 return (1);
4078                         }
4079                         err = zfs_destroy(zhp, B_FALSE);
4080                 }
4081
4082                 return (err != 0);
4083         }
4084
4085         if (isatty(STDIN_FILENO)) {
4086                 (void) fprintf(stderr,
4087                     gettext("Error: Backup stream can not be read "
4088                     "from a terminal.\n"
4089                     "You must redirect standard input.\n"));
4090                 return (1);
4091         }
4092         err = zfs_receive(g_zfs, argv[0], props, &flags, STDIN_FILENO, NULL);
4093
4094         return (err != 0);
4095 }
4096
4097 /*
4098  * allow/unallow stuff
4099  */
4100 /* copied from zfs/sys/dsl_deleg.h */
4101 #define ZFS_DELEG_PERM_CREATE           "create"
4102 #define ZFS_DELEG_PERM_DESTROY          "destroy"
4103 #define ZFS_DELEG_PERM_SNAPSHOT         "snapshot"
4104 #define ZFS_DELEG_PERM_ROLLBACK         "rollback"
4105 #define ZFS_DELEG_PERM_CLONE            "clone"
4106 #define ZFS_DELEG_PERM_PROMOTE          "promote"
4107 #define ZFS_DELEG_PERM_RENAME           "rename"
4108 #define ZFS_DELEG_PERM_MOUNT            "mount"
4109 #define ZFS_DELEG_PERM_SHARE            "share"
4110 #define ZFS_DELEG_PERM_SEND             "send"
4111 #define ZFS_DELEG_PERM_RECEIVE          "receive"
4112 #define ZFS_DELEG_PERM_ALLOW            "allow"
4113 #define ZFS_DELEG_PERM_USERPROP         "userprop"
4114 #define ZFS_DELEG_PERM_VSCAN            "vscan" /* ??? */
4115 #define ZFS_DELEG_PERM_USERQUOTA        "userquota"
4116 #define ZFS_DELEG_PERM_GROUPQUOTA       "groupquota"
4117 #define ZFS_DELEG_PERM_USERUSED         "userused"
4118 #define ZFS_DELEG_PERM_GROUPUSED        "groupused"
4119 #define ZFS_DELEG_PERM_HOLD             "hold"
4120 #define ZFS_DELEG_PERM_RELEASE          "release"
4121 #define ZFS_DELEG_PERM_DIFF             "diff"
4122 #define ZFS_DELEG_PERM_BOOKMARK         "bookmark"
4123
4124 #define ZFS_NUM_DELEG_NOTES ZFS_DELEG_NOTE_NONE
4125
4126 static zfs_deleg_perm_tab_t zfs_deleg_perm_tbl[] = {
4127         { ZFS_DELEG_PERM_ALLOW, ZFS_DELEG_NOTE_ALLOW },
4128         { ZFS_DELEG_PERM_CLONE, ZFS_DELEG_NOTE_CLONE },
4129         { ZFS_DELEG_PERM_CREATE, ZFS_DELEG_NOTE_CREATE },
4130         { ZFS_DELEG_PERM_DESTROY, ZFS_DELEG_NOTE_DESTROY },
4131         { ZFS_DELEG_PERM_DIFF, ZFS_DELEG_NOTE_DIFF},
4132         { ZFS_DELEG_PERM_HOLD, ZFS_DELEG_NOTE_HOLD },
4133         { ZFS_DELEG_PERM_MOUNT, ZFS_DELEG_NOTE_MOUNT },
4134         { ZFS_DELEG_PERM_PROMOTE, ZFS_DELEG_NOTE_PROMOTE },
4135         { ZFS_DELEG_PERM_RECEIVE, ZFS_DELEG_NOTE_RECEIVE },
4136         { ZFS_DELEG_PERM_RELEASE, ZFS_DELEG_NOTE_RELEASE },
4137         { ZFS_DELEG_PERM_RENAME, ZFS_DELEG_NOTE_RENAME },
4138         { ZFS_DELEG_PERM_ROLLBACK, ZFS_DELEG_NOTE_ROLLBACK },
4139         { ZFS_DELEG_PERM_SEND, ZFS_DELEG_NOTE_SEND },
4140         { ZFS_DELEG_PERM_SHARE, ZFS_DELEG_NOTE_SHARE },
4141         { ZFS_DELEG_PERM_SNAPSHOT, ZFS_DELEG_NOTE_SNAPSHOT },
4142         { ZFS_DELEG_PERM_BOOKMARK, ZFS_DELEG_NOTE_BOOKMARK },
4143
4144         { ZFS_DELEG_PERM_GROUPQUOTA, ZFS_DELEG_NOTE_GROUPQUOTA },
4145         { ZFS_DELEG_PERM_GROUPUSED, ZFS_DELEG_NOTE_GROUPUSED },
4146         { ZFS_DELEG_PERM_USERPROP, ZFS_DELEG_NOTE_USERPROP },
4147         { ZFS_DELEG_PERM_USERQUOTA, ZFS_DELEG_NOTE_USERQUOTA },
4148         { ZFS_DELEG_PERM_USERUSED, ZFS_DELEG_NOTE_USERUSED },
4149         { NULL, ZFS_DELEG_NOTE_NONE }
4150 };
4151
4152 /* permission structure */
4153 typedef struct deleg_perm {
4154         zfs_deleg_who_type_t    dp_who_type;
4155         const char              *dp_name;
4156         boolean_t               dp_local;
4157         boolean_t               dp_descend;
4158 } deleg_perm_t;
4159
4160 /* */
4161 typedef struct deleg_perm_node {
4162         deleg_perm_t            dpn_perm;
4163
4164         uu_avl_node_t           dpn_avl_node;
4165 } deleg_perm_node_t;
4166
4167 typedef struct fs_perm fs_perm_t;
4168
4169 /* permissions set */
4170 typedef struct who_perm {
4171         zfs_deleg_who_type_t    who_type;
4172         const char              *who_name;              /* id */
4173         char                    who_ug_name[256];       /* user/group name */
4174         fs_perm_t               *who_fsperm;            /* uplink */
4175
4176         uu_avl_t                *who_deleg_perm_avl;    /* permissions */
4177 } who_perm_t;
4178
4179 /* */
4180 typedef struct who_perm_node {
4181         who_perm_t      who_perm;
4182         uu_avl_node_t   who_avl_node;
4183 } who_perm_node_t;
4184
4185 typedef struct fs_perm_set fs_perm_set_t;
4186 /* fs permissions */
4187 struct fs_perm {
4188         const char              *fsp_name;
4189
4190         uu_avl_t                *fsp_sc_avl;    /* sets,create */
4191         uu_avl_t                *fsp_uge_avl;   /* user,group,everyone */
4192
4193         fs_perm_set_t           *fsp_set;       /* uplink */
4194 };
4195
4196 /* */
4197 typedef struct fs_perm_node {
4198         fs_perm_t       fspn_fsperm;
4199         uu_avl_t        *fspn_avl;
4200
4201         uu_list_node_t  fspn_list_node;
4202 } fs_perm_node_t;
4203
4204 /* top level structure */
4205 struct fs_perm_set {
4206         uu_list_pool_t  *fsps_list_pool;
4207         uu_list_t       *fsps_list; /* list of fs_perms */
4208
4209         uu_avl_pool_t   *fsps_named_set_avl_pool;
4210         uu_avl_pool_t   *fsps_who_perm_avl_pool;
4211         uu_avl_pool_t   *fsps_deleg_perm_avl_pool;
4212 };
4213
4214 static inline const char *
4215 deleg_perm_type(zfs_deleg_note_t note)
4216 {
4217         /* subcommands */
4218         switch (note) {
4219                 /* SUBCOMMANDS */
4220                 /* OTHER */
4221         case ZFS_DELEG_NOTE_GROUPQUOTA:
4222         case ZFS_DELEG_NOTE_GROUPUSED:
4223         case ZFS_DELEG_NOTE_USERPROP:
4224         case ZFS_DELEG_NOTE_USERQUOTA:
4225         case ZFS_DELEG_NOTE_USERUSED:
4226                 /* other */
4227                 return (gettext("other"));
4228         default:
4229                 return (gettext("subcommand"));
4230         }
4231 }
4232
4233 static int inline
4234 who_type2weight(zfs_deleg_who_type_t who_type)
4235 {
4236         int res;
4237         switch (who_type) {
4238                 case ZFS_DELEG_NAMED_SET_SETS:
4239                 case ZFS_DELEG_NAMED_SET:
4240                         res = 0;
4241                         break;
4242                 case ZFS_DELEG_CREATE_SETS:
4243                 case ZFS_DELEG_CREATE:
4244                         res = 1;
4245                         break;
4246                 case ZFS_DELEG_USER_SETS:
4247                 case ZFS_DELEG_USER:
4248                         res = 2;
4249                         break;
4250                 case ZFS_DELEG_GROUP_SETS:
4251                 case ZFS_DELEG_GROUP:
4252                         res = 3;
4253                         break;
4254                 case ZFS_DELEG_EVERYONE_SETS:
4255                 case ZFS_DELEG_EVERYONE:
4256                         res = 4;
4257                         break;
4258                 default:
4259                         res = -1;
4260         }
4261
4262         return (res);
4263 }
4264
4265 /* ARGSUSED */
4266 static int
4267 who_perm_compare(const void *larg, const void *rarg, void *unused)
4268 {
4269         const who_perm_node_t *l = larg;
4270         const who_perm_node_t *r = rarg;
4271         zfs_deleg_who_type_t ltype = l->who_perm.who_type;
4272         zfs_deleg_who_type_t rtype = r->who_perm.who_type;
4273         int lweight = who_type2weight(ltype);
4274         int rweight = who_type2weight(rtype);
4275         int res = lweight - rweight;
4276         if (res == 0)
4277                 res = strncmp(l->who_perm.who_name, r->who_perm.who_name,
4278                     ZFS_MAX_DELEG_NAME-1);
4279
4280         if (res == 0)
4281                 return (0);
4282         if (res > 0)
4283                 return (1);
4284         else
4285                 return (-1);
4286 }
4287
4288 /* ARGSUSED */
4289 static int
4290 deleg_perm_compare(const void *larg, const void *rarg, void *unused)
4291 {
4292         const deleg_perm_node_t *l = larg;
4293         const deleg_perm_node_t *r = rarg;
4294         int res =  strncmp(l->dpn_perm.dp_name, r->dpn_perm.dp_name,
4295             ZFS_MAX_DELEG_NAME-1);
4296
4297         if (res == 0)
4298                 return (0);
4299
4300         if (res > 0)
4301                 return (1);
4302         else
4303                 return (-1);
4304 }
4305
4306 static inline void
4307 fs_perm_set_init(fs_perm_set_t *fspset)
4308 {
4309         bzero(fspset, sizeof (fs_perm_set_t));
4310
4311         if ((fspset->fsps_list_pool = uu_list_pool_create("fsps_list_pool",
4312             sizeof (fs_perm_node_t), offsetof(fs_perm_node_t, fspn_list_node),
4313             NULL, UU_DEFAULT)) == NULL)
4314                 nomem();
4315         if ((fspset->fsps_list = uu_list_create(fspset->fsps_list_pool, NULL,
4316             UU_DEFAULT)) == NULL)
4317                 nomem();
4318
4319         if ((fspset->fsps_named_set_avl_pool = uu_avl_pool_create(
4320             "named_set_avl_pool", sizeof (who_perm_node_t), offsetof(
4321             who_perm_node_t, who_avl_node), who_perm_compare,
4322             UU_DEFAULT)) == NULL)
4323                 nomem();
4324
4325         if ((fspset->fsps_who_perm_avl_pool = uu_avl_pool_create(
4326             "who_perm_avl_pool", sizeof (who_perm_node_t), offsetof(
4327             who_perm_node_t, who_avl_node), who_perm_compare,
4328             UU_DEFAULT)) == NULL)
4329                 nomem();
4330
4331         if ((fspset->fsps_deleg_perm_avl_pool = uu_avl_pool_create(
4332             "deleg_perm_avl_pool", sizeof (deleg_perm_node_t), offsetof(
4333             deleg_perm_node_t, dpn_avl_node), deleg_perm_compare, UU_DEFAULT))
4334             == NULL)
4335                 nomem();
4336 }
4337
4338 static inline void fs_perm_fini(fs_perm_t *);
4339 static inline void who_perm_fini(who_perm_t *);
4340
4341 static inline void
4342 fs_perm_set_fini(fs_perm_set_t *fspset)
4343 {
4344         fs_perm_node_t *node = uu_list_first(fspset->fsps_list);
4345
4346         while (node != NULL) {
4347                 fs_perm_node_t *next_node =
4348                     uu_list_next(fspset->fsps_list, node);
4349                 fs_perm_t *fsperm = &node->fspn_fsperm;
4350                 fs_perm_fini(fsperm);
4351                 uu_list_remove(fspset->fsps_list, node);
4352                 free(node);
4353                 node = next_node;
4354         }
4355
4356         uu_avl_pool_destroy(fspset->fsps_named_set_avl_pool);
4357         uu_avl_pool_destroy(fspset->fsps_who_perm_avl_pool);
4358         uu_avl_pool_destroy(fspset->fsps_deleg_perm_avl_pool);
4359 }
4360
4361 static inline void
4362 deleg_perm_init(deleg_perm_t *deleg_perm, zfs_deleg_who_type_t type,
4363     const char *name)
4364 {
4365         deleg_perm->dp_who_type = type;
4366         deleg_perm->dp_name = name;
4367 }
4368
4369 static inline void
4370 who_perm_init(who_perm_t *who_perm, fs_perm_t *fsperm,
4371     zfs_deleg_who_type_t type, const char *name)
4372 {
4373         uu_avl_pool_t   *pool;
4374         pool = fsperm->fsp_set->fsps_deleg_perm_avl_pool;
4375
4376         bzero(who_perm, sizeof (who_perm_t));
4377
4378         if ((who_perm->who_deleg_perm_avl = uu_avl_create(pool, NULL,
4379             UU_DEFAULT)) == NULL)
4380                 nomem();
4381
4382         who_perm->who_type = type;
4383         who_perm->who_name = name;
4384         who_perm->who_fsperm = fsperm;
4385 }
4386
4387 static inline void
4388 who_perm_fini(who_perm_t *who_perm)
4389 {
4390         deleg_perm_node_t *node = uu_avl_first(who_perm->who_deleg_perm_avl);
4391
4392         while (node != NULL) {
4393                 deleg_perm_node_t *next_node =
4394                     uu_avl_next(who_perm->who_deleg_perm_avl, node);
4395
4396                 uu_avl_remove(who_perm->who_deleg_perm_avl, node);
4397                 free(node);
4398                 node = next_node;
4399         }
4400
4401         uu_avl_destroy(who_perm->who_deleg_perm_avl);
4402 }
4403
4404 static inline void
4405 fs_perm_init(fs_perm_t *fsperm, fs_perm_set_t *fspset, const char *fsname)
4406 {
4407         uu_avl_pool_t   *nset_pool = fspset->fsps_named_set_avl_pool;
4408         uu_avl_pool_t   *who_pool = fspset->fsps_who_perm_avl_pool;
4409
4410         bzero(fsperm, sizeof (fs_perm_t));
4411
4412         if ((fsperm->fsp_sc_avl = uu_avl_create(nset_pool, NULL, UU_DEFAULT))
4413             == NULL)
4414                 nomem();
4415
4416         if ((fsperm->fsp_uge_avl = uu_avl_create(who_pool, NULL, UU_DEFAULT))
4417             == NULL)
4418                 nomem();
4419
4420         fsperm->fsp_set = fspset;
4421         fsperm->fsp_name = fsname;
4422 }
4423
4424 static inline void
4425 fs_perm_fini(fs_perm_t *fsperm)
4426 {
4427         who_perm_node_t *node = uu_avl_first(fsperm->fsp_sc_avl);
4428         while (node != NULL) {
4429                 who_perm_node_t *next_node = uu_avl_next(fsperm->fsp_sc_avl,
4430                     node);
4431                 who_perm_t *who_perm = &node->who_perm;
4432                 who_perm_fini(who_perm);
4433                 uu_avl_remove(fsperm->fsp_sc_avl, node);
4434                 free(node);
4435                 node = next_node;
4436         }
4437
4438         node = uu_avl_first(fsperm->fsp_uge_avl);
4439         while (node != NULL) {
4440                 who_perm_node_t *next_node = uu_avl_next(fsperm->fsp_uge_avl,
4441                     node);
4442                 who_perm_t *who_perm = &node->who_perm;
4443                 who_perm_fini(who_perm);
4444                 uu_avl_remove(fsperm->fsp_uge_avl, node);
4445                 free(node);
4446                 node = next_node;
4447         }
4448
4449         uu_avl_destroy(fsperm->fsp_sc_avl);
4450         uu_avl_destroy(fsperm->fsp_uge_avl);
4451 }
4452
4453 static void inline
4454 set_deleg_perm_node(uu_avl_t *avl, deleg_perm_node_t *node,
4455     zfs_deleg_who_type_t who_type, const char *name, char locality)
4456 {
4457         uu_avl_index_t idx = 0;
4458
4459         deleg_perm_node_t *found_node = NULL;
4460         deleg_perm_t    *deleg_perm = &node->dpn_perm;
4461
4462         deleg_perm_init(deleg_perm, who_type, name);
4463
4464         if ((found_node = uu_avl_find(avl, node, NULL, &idx))
4465             == NULL)
4466                 uu_avl_insert(avl, node, idx);
4467         else {
4468                 node = found_node;
4469                 deleg_perm = &node->dpn_perm;
4470         }
4471
4472
4473         switch (locality) {
4474         case ZFS_DELEG_LOCAL:
4475                 deleg_perm->dp_local = B_TRUE;
4476                 break;
4477         case ZFS_DELEG_DESCENDENT:
4478                 deleg_perm->dp_descend = B_TRUE;
4479                 break;
4480         case ZFS_DELEG_NA:
4481                 break;
4482         default:
4483                 assert(B_FALSE); /* invalid locality */
4484         }
4485 }
4486
4487 static inline int
4488 parse_who_perm(who_perm_t *who_perm, nvlist_t *nvl, char locality)
4489 {
4490         nvpair_t *nvp = NULL;
4491         fs_perm_set_t *fspset = who_perm->who_fsperm->fsp_set;
4492         uu_avl_t *avl = who_perm->who_deleg_perm_avl;
4493         zfs_deleg_who_type_t who_type = who_perm->who_type;
4494
4495         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4496                 const char *name = nvpair_name(nvp);
4497                 data_type_t type = nvpair_type(nvp);
4498                 uu_avl_pool_t *avl_pool = fspset->fsps_deleg_perm_avl_pool;
4499                 deleg_perm_node_t *node =
4500                     safe_malloc(sizeof (deleg_perm_node_t));
4501
4502                 assert(type == DATA_TYPE_BOOLEAN);
4503
4504                 uu_avl_node_init(node, &node->dpn_avl_node, avl_pool);
4505                 set_deleg_perm_node(avl, node, who_type, name, locality);
4506         }
4507
4508         return (0);
4509 }
4510
4511 static inline int
4512 parse_fs_perm(fs_perm_t *fsperm, nvlist_t *nvl)
4513 {
4514         nvpair_t *nvp = NULL;
4515         fs_perm_set_t *fspset = fsperm->fsp_set;
4516
4517         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4518                 nvlist_t *nvl2 = NULL;
4519                 const char *name = nvpair_name(nvp);
4520                 uu_avl_t *avl = NULL;
4521                 uu_avl_pool_t *avl_pool;
4522                 zfs_deleg_who_type_t perm_type = name[0];
4523                 char perm_locality = name[1];
4524                 const char *perm_name = name + 3;
4525                 boolean_t is_set = B_TRUE;
4526                 who_perm_t *who_perm = NULL;
4527
4528                 assert('$' == name[2]);
4529
4530                 if (nvpair_value_nvlist(nvp, &nvl2) != 0)
4531                         return (-1);
4532
4533                 switch (perm_type) {
4534                 case ZFS_DELEG_CREATE:
4535                 case ZFS_DELEG_CREATE_SETS:
4536                 case ZFS_DELEG_NAMED_SET:
4537                 case ZFS_DELEG_NAMED_SET_SETS:
4538                         avl_pool = fspset->fsps_named_set_avl_pool;
4539                         avl = fsperm->fsp_sc_avl;
4540                         break;
4541                 case ZFS_DELEG_USER:
4542                 case ZFS_DELEG_USER_SETS:
4543                 case ZFS_DELEG_GROUP:
4544                 case ZFS_DELEG_GROUP_SETS:
4545                 case ZFS_DELEG_EVERYONE:
4546                 case ZFS_DELEG_EVERYONE_SETS:
4547                         avl_pool = fspset->fsps_who_perm_avl_pool;
4548                         avl = fsperm->fsp_uge_avl;
4549                         break;
4550                 }
4551
4552                 if (is_set) {
4553                         who_perm_node_t *found_node = NULL;
4554                         who_perm_node_t *node = safe_malloc(
4555                             sizeof (who_perm_node_t));
4556                         who_perm = &node->who_perm;
4557                         uu_avl_index_t idx = 0;
4558
4559                         uu_avl_node_init(node, &node->who_avl_node, avl_pool);
4560                         who_perm_init(who_perm, fsperm, perm_type, perm_name);
4561
4562                         if ((found_node = uu_avl_find(avl, node, NULL, &idx))
4563                             == NULL) {
4564                                 if (avl == fsperm->fsp_uge_avl) {
4565                                         uid_t rid = 0;
4566                                         struct passwd *p = NULL;
4567                                         struct group *g = NULL;
4568                                         const char *nice_name = NULL;
4569
4570                                         switch (perm_type) {
4571                                         case ZFS_DELEG_USER_SETS:
4572                                         case ZFS_DELEG_USER:
4573                                                 rid = atoi(perm_name);
4574                                                 p = getpwuid(rid);
4575                                                 if (p)
4576                                                         nice_name = p->pw_name;
4577                                                 break;
4578                                         case ZFS_DELEG_GROUP_SETS:
4579                                         case ZFS_DELEG_GROUP:
4580                                                 rid = atoi(perm_name);
4581                                                 g = getgrgid(rid);
4582                                                 if (g)
4583                                                         nice_name = g->gr_name;
4584                                                 break;
4585                                         }
4586
4587                                         if (nice_name != NULL)
4588                                                 (void) strlcpy(
4589                                                     node->who_perm.who_ug_name,
4590                                                     nice_name, 256);
4591                                 }
4592
4593                                 uu_avl_insert(avl, node, idx);
4594                         } else {
4595                                 node = found_node;
4596                                 who_perm = &node->who_perm;
4597                         }
4598                 }
4599
4600                 (void) parse_who_perm(who_perm, nvl2, perm_locality);
4601         }
4602
4603         return (0);
4604 }
4605
4606 static inline int
4607 parse_fs_perm_set(fs_perm_set_t *fspset, nvlist_t *nvl)
4608 {
4609         nvpair_t *nvp = NULL;
4610         uu_avl_index_t idx = 0;
4611
4612         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4613                 nvlist_t *nvl2 = NULL;
4614                 const char *fsname = nvpair_name(nvp);
4615                 data_type_t type = nvpair_type(nvp);
4616                 fs_perm_t *fsperm = NULL;
4617                 fs_perm_node_t *node = safe_malloc(sizeof (fs_perm_node_t));
4618                 if (node == NULL)
4619                         nomem();
4620
4621                 fsperm = &node->fspn_fsperm;
4622
4623                 assert(DATA_TYPE_NVLIST == type);
4624
4625                 uu_list_node_init(node, &node->fspn_list_node,
4626                     fspset->fsps_list_pool);
4627
4628                 idx = uu_list_numnodes(fspset->fsps_list);
4629                 fs_perm_init(fsperm, fspset, fsname);
4630
4631                 if (nvpair_value_nvlist(nvp, &nvl2) != 0)
4632                         return (-1);
4633
4634                 (void) parse_fs_perm(fsperm, nvl2);
4635
4636                 uu_list_insert(fspset->fsps_list, node, idx);
4637         }
4638
4639         return (0);
4640 }
4641
4642 static inline const char *
4643 deleg_perm_comment(zfs_deleg_note_t note)
4644 {
4645         const char *str = "";
4646
4647         /* subcommands */
4648         switch (note) {
4649                 /* SUBCOMMANDS */
4650         case ZFS_DELEG_NOTE_ALLOW:
4651                 str = gettext("Must also have the permission that is being"
4652                     "\n\t\t\t\tallowed");
4653                 break;
4654         case ZFS_DELEG_NOTE_CLONE:
4655                 str = gettext("Must also have the 'create' ability and 'mount'"
4656                     "\n\t\t\t\tability in the origin file system");
4657                 break;
4658         case ZFS_DELEG_NOTE_CREATE:
4659                 str = gettext("Must also have the 'mount' ability");
4660                 break;
4661         case ZFS_DELEG_NOTE_DESTROY:
4662                 str = gettext("Must also have the 'mount' ability");
4663                 break;
4664         case ZFS_DELEG_NOTE_DIFF:
4665                 str = gettext("Allows lookup of paths within a dataset;"
4666                     "\n\t\t\t\tgiven an object number. Ordinary users need this"
4667                     "\n\t\t\t\tin order to use zfs diff");
4668                 break;
4669         case ZFS_DELEG_NOTE_HOLD:
4670                 str = gettext("Allows adding a user hold to a snapshot");
4671                 break;
4672         case ZFS_DELEG_NOTE_MOUNT:
4673                 str = gettext("Allows mount/umount of ZFS datasets");
4674                 break;
4675         case ZFS_DELEG_NOTE_PROMOTE:
4676                 str = gettext("Must also have the 'mount'\n\t\t\t\tand"
4677                     " 'promote' ability in the origin file system");
4678                 break;
4679         case ZFS_DELEG_NOTE_RECEIVE:
4680                 str = gettext("Must also have the 'mount' and 'create'"
4681                     " ability");
4682                 break;
4683         case ZFS_DELEG_NOTE_RELEASE:
4684                 str = gettext("Allows releasing a user hold which\n\t\t\t\t"
4685                     "might destroy the snapshot");
4686                 break;
4687         case ZFS_DELEG_NOTE_RENAME:
4688                 str = gettext("Must also have the 'mount' and 'create'"
4689                     "\n\t\t\t\tability in the new parent");
4690                 break;
4691         case ZFS_DELEG_NOTE_ROLLBACK:
4692                 str = gettext("");
4693                 break;
4694         case ZFS_DELEG_NOTE_SEND:
4695                 str = gettext("");
4696                 break;
4697         case ZFS_DELEG_NOTE_SHARE:
4698                 str = gettext("Allows sharing file systems over NFS or SMB"
4699                     "\n\t\t\t\tprotocols");
4700                 break;
4701         case ZFS_DELEG_NOTE_SNAPSHOT:
4702                 str = gettext("");
4703                 break;
4704 /*
4705  *      case ZFS_DELEG_NOTE_VSCAN:
4706  *              str = gettext("");
4707  *              break;
4708  */
4709                 /* OTHER */
4710         case ZFS_DELEG_NOTE_GROUPQUOTA:
4711                 str = gettext("Allows accessing any groupquota@... property");
4712                 break;
4713         case ZFS_DELEG_NOTE_GROUPUSED:
4714                 str = gettext("Allows reading any groupused@... property");
4715                 break;
4716         case ZFS_DELEG_NOTE_USERPROP:
4717                 str = gettext("Allows changing any user property");
4718                 break;
4719         case ZFS_DELEG_NOTE_USERQUOTA:
4720                 str = gettext("Allows accessing any userquota@... property");
4721                 break;
4722         case ZFS_DELEG_NOTE_USERUSED:
4723                 str = gettext("Allows reading any userused@... property");
4724                 break;
4725                 /* other */
4726         default:
4727                 str = "";
4728         }
4729
4730         return (str);
4731 }
4732
4733 struct allow_opts {
4734         boolean_t local;
4735         boolean_t descend;
4736         boolean_t user;
4737         boolean_t group;
4738         boolean_t everyone;
4739         boolean_t create;
4740         boolean_t set;
4741         boolean_t recursive; /* unallow only */
4742         boolean_t prt_usage;
4743
4744         boolean_t prt_perms;
4745         char *who;
4746         char *perms;
4747         const char *dataset;
4748 };
4749
4750 static inline int
4751 prop_cmp(const void *a, const void *b)
4752 {
4753         const char *str1 = *(const char **)a;
4754         const char *str2 = *(const char **)b;
4755         return (strcmp(str1, str2));
4756 }
4757
4758 static void
4759 allow_usage(boolean_t un, boolean_t requested, const char *msg)
4760 {
4761         const char *opt_desc[] = {
4762                 "-h", gettext("show this help message and exit"),
4763                 "-l", gettext("set permission locally"),
4764                 "-d", gettext("set permission for descents"),
4765                 "-u", gettext("set permission for user"),
4766                 "-g", gettext("set permission for group"),
4767                 "-e", gettext("set permission for everyone"),
4768                 "-c", gettext("set create time permission"),
4769                 "-s", gettext("define permission set"),
4770                 /* unallow only */
4771                 "-r", gettext("remove permissions recursively"),
4772         };
4773         size_t unallow_size = sizeof (opt_desc) / sizeof (char *);
4774         size_t allow_size = unallow_size - 2;
4775         const char *props[ZFS_NUM_PROPS];
4776         int i;
4777         size_t count = 0;
4778         FILE *fp = requested ? stdout : stderr;
4779         zprop_desc_t *pdtbl = zfs_prop_get_table();
4780         const char *fmt = gettext("%-16s %-14s\t%s\n");
4781
4782         (void) fprintf(fp, gettext("Usage: %s\n"), get_usage(un ? HELP_UNALLOW :
4783             HELP_ALLOW));
4784         (void) fprintf(fp, gettext("Options:\n"));
4785         for (i = 0; i < (un ? unallow_size : allow_size); i++) {
4786                 const char *opt = opt_desc[i++];
4787                 const char *optdsc = opt_desc[i];
4788                 (void) fprintf(fp, gettext("  %-10s  %s\n"), opt, optdsc);
4789         }
4790
4791         (void) fprintf(fp, gettext("\nThe following permissions are "
4792             "supported:\n\n"));
4793         (void) fprintf(fp, fmt, gettext("NAME"), gettext("TYPE"),
4794             gettext("NOTES"));
4795         for (i = 0; i < ZFS_NUM_DELEG_NOTES; i++) {
4796                 const char *perm_name = zfs_deleg_perm_tbl[i].z_perm;
4797                 zfs_deleg_note_t perm_note = zfs_deleg_perm_tbl[i].z_note;
4798                 const char *perm_type = deleg_perm_type(perm_note);
4799                 const char *perm_comment = deleg_perm_comment(perm_note);
4800                 (void) fprintf(fp, fmt, perm_name, perm_type, perm_comment);
4801         }
4802
4803         for (i = 0; i < ZFS_NUM_PROPS; i++) {
4804                 zprop_desc_t *pd = &pdtbl[i];
4805                 if (pd->pd_visible != B_TRUE)
4806                         continue;
4807
4808                 if (pd->pd_attr == PROP_READONLY)
4809                         continue;
4810
4811                 props[count++] = pd->pd_name;
4812         }
4813         props[count] = NULL;
4814
4815         qsort(props, count, sizeof (char *), prop_cmp);
4816
4817         for (i = 0; i < count; i++)
4818                 (void) fprintf(fp, fmt, props[i], gettext("property"), "");
4819
4820         if (msg != NULL)
4821                 (void) fprintf(fp, gettext("\nzfs: error: %s"), msg);
4822
4823         exit(requested ? 0 : 2);
4824 }
4825
4826 static inline const char *
4827 munge_args(int argc, char **argv, boolean_t un, size_t expected_argc,
4828     char **permsp)
4829 {
4830         if (un && argc == expected_argc - 1)
4831                 *permsp = NULL;
4832         else if (argc == expected_argc)
4833                 *permsp = argv[argc - 2];
4834         else
4835                 allow_usage(un, B_FALSE,
4836                     gettext("wrong number of parameters\n"));
4837
4838         return (argv[argc - 1]);
4839 }
4840
4841 static void
4842 parse_allow_args(int argc, char **argv, boolean_t un, struct allow_opts *opts)
4843 {
4844         int uge_sum = opts->user + opts->group + opts->everyone;
4845         int csuge_sum = opts->create + opts->set + uge_sum;
4846         int ldcsuge_sum = csuge_sum + opts->local + opts->descend;
4847         int all_sum = un ? ldcsuge_sum + opts->recursive : ldcsuge_sum;
4848
4849         if (uge_sum > 1)
4850                 allow_usage(un, B_FALSE,
4851                     gettext("-u, -g, and -e are mutually exclusive\n"));
4852
4853         if (opts->prt_usage)
4854                 if (argc == 0 && all_sum == 0)
4855                         allow_usage(un, B_TRUE, NULL);
4856                 else
4857                         usage(B_FALSE);
4858
4859         if (opts->set) {
4860                 if (csuge_sum > 1)
4861                         allow_usage(un, B_FALSE,
4862                             gettext("invalid options combined with -s\n"));
4863
4864                 opts->dataset = munge_args(argc, argv, un, 3, &opts->perms);
4865                 if (argv[0][0] != '@')
4866                         allow_usage(un, B_FALSE,
4867                             gettext("invalid set name: missing '@' prefix\n"));
4868                 opts->who = argv[0];
4869         } else if (opts->create) {
4870                 if (ldcsuge_sum > 1)
4871                         allow_usage(un, B_FALSE,
4872                             gettext("invalid options combined with -c\n"));
4873                 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
4874         } else if (opts->everyone) {
4875                 if (csuge_sum > 1)
4876                         allow_usage(un, B_FALSE,
4877                             gettext("invalid options combined with -e\n"));
4878                 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
4879         } else if (uge_sum == 0 && argc > 0 && strcmp(argv[0], "everyone")
4880             == 0) {
4881                 opts->everyone = B_TRUE;
4882                 argc--;
4883                 argv++;
4884                 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
4885         } else if (argc == 1 && !un) {
4886                 opts->prt_perms = B_TRUE;
4887                 opts->dataset = argv[argc-1];
4888         } else {
4889                 opts->dataset = munge_args(argc, argv, un, 3, &opts->perms);
4890                 opts->who = argv[0];
4891         }
4892
4893         if (!opts->local && !opts->descend) {
4894                 opts->local = B_TRUE;
4895                 opts->descend = B_TRUE;
4896         }
4897 }
4898
4899 static void
4900 store_allow_perm(zfs_deleg_who_type_t type, boolean_t local, boolean_t descend,
4901     const char *who, char *perms, nvlist_t *top_nvl)
4902 {
4903         int i;
4904         char ld[2] = { '\0', '\0' };
4905         char who_buf[ZFS_MAXNAMELEN+32];
4906         char base_type;
4907         char set_type;
4908         nvlist_t *base_nvl = NULL;
4909         nvlist_t *set_nvl = NULL;
4910         nvlist_t *nvl;
4911
4912         if (nvlist_alloc(&base_nvl, NV_UNIQUE_NAME, 0) != 0)
4913                 nomem();
4914         if (nvlist_alloc(&set_nvl, NV_UNIQUE_NAME, 0) !=  0)
4915                 nomem();
4916
4917         switch (type) {
4918         case ZFS_DELEG_NAMED_SET_SETS:
4919         case ZFS_DELEG_NAMED_SET:
4920                 set_type = ZFS_DELEG_NAMED_SET_SETS;
4921                 base_type = ZFS_DELEG_NAMED_SET;
4922                 ld[0] = ZFS_DELEG_NA;
4923                 break;
4924         case ZFS_DELEG_CREATE_SETS:
4925         case ZFS_DELEG_CREATE:
4926                 set_type = ZFS_DELEG_CREATE_SETS;
4927                 base_type = ZFS_DELEG_CREATE;
4928                 ld[0] = ZFS_DELEG_NA;
4929                 break;
4930         case ZFS_DELEG_USER_SETS:
4931         case ZFS_DELEG_USER:
4932                 set_type = ZFS_DELEG_USER_SETS;
4933                 base_type = ZFS_DELEG_USER;
4934                 if (local)
4935                         ld[0] = ZFS_DELEG_LOCAL;
4936                 if (descend)
4937                         ld[1] = ZFS_DELEG_DESCENDENT;
4938                 break;
4939         case ZFS_DELEG_GROUP_SETS:
4940         case ZFS_DELEG_GROUP:
4941                 set_type = ZFS_DELEG_GROUP_SETS;
4942                 base_type = ZFS_DELEG_GROUP;
4943                 if (local)
4944                         ld[0] = ZFS_DELEG_LOCAL;
4945                 if (descend)
4946                         ld[1] = ZFS_DELEG_DESCENDENT;
4947                 break;
4948         case ZFS_DELEG_EVERYONE_SETS:
4949         case ZFS_DELEG_EVERYONE:
4950                 set_type = ZFS_DELEG_EVERYONE_SETS;
4951                 base_type = ZFS_DELEG_EVERYONE;
4952                 if (local)
4953                         ld[0] = ZFS_DELEG_LOCAL;
4954                 if (descend)
4955                         ld[1] = ZFS_DELEG_DESCENDENT;
4956         }
4957
4958         if (perms != NULL) {
4959                 char *curr = perms;
4960                 char *end = curr + strlen(perms);
4961
4962                 while (curr < end) {
4963                         char *delim = strchr(curr, ',');
4964                         if (delim == NULL)
4965                                 delim = end;
4966                         else
4967                                 *delim = '\0';
4968
4969                         if (curr[0] == '@')
4970                                 nvl = set_nvl;
4971                         else
4972                                 nvl = base_nvl;
4973
4974                         (void) nvlist_add_boolean(nvl, curr);
4975                         if (delim != end)
4976                                 *delim = ',';
4977                         curr = delim + 1;
4978                 }
4979
4980                 for (i = 0; i < 2; i++) {
4981                         char locality = ld[i];
4982                         if (locality == 0)
4983                                 continue;
4984
4985                         if (!nvlist_empty(base_nvl)) {
4986                                 if (who != NULL)
4987                                         (void) snprintf(who_buf,
4988                                             sizeof (who_buf), "%c%c$%s",
4989                                             base_type, locality, who);
4990                                 else
4991                                         (void) snprintf(who_buf,
4992                                             sizeof (who_buf), "%c%c$",
4993                                             base_type, locality);
4994
4995                                 (void) nvlist_add_nvlist(top_nvl, who_buf,
4996                                     base_nvl);
4997                         }
4998
4999
5000                         if (!nvlist_empty(set_nvl)) {
5001                                 if (who != NULL)
5002                                         (void) snprintf(who_buf,
5003                                             sizeof (who_buf), "%c%c$%s",
5004                                             set_type, locality, who);
5005                                 else
5006                                         (void) snprintf(who_buf,
5007                                             sizeof (who_buf), "%c%c$",
5008                                             set_type, locality);
5009
5010                                 (void) nvlist_add_nvlist(top_nvl, who_buf,
5011                                     set_nvl);
5012                         }
5013                 }
5014         } else {
5015                 for (i = 0; i < 2; i++) {
5016                         char locality = ld[i];
5017                         if (locality == 0)
5018                                 continue;
5019
5020                         if (who != NULL)
5021                                 (void) snprintf(who_buf, sizeof (who_buf),
5022                                     "%c%c$%s", base_type, locality, who);
5023                         else
5024                                 (void) snprintf(who_buf, sizeof (who_buf),
5025                                     "%c%c$", base_type, locality);
5026                         (void) nvlist_add_boolean(top_nvl, who_buf);
5027
5028                         if (who != NULL)
5029                                 (void) snprintf(who_buf, sizeof (who_buf),
5030                                     "%c%c$%s", set_type, locality, who);
5031                         else
5032                                 (void) snprintf(who_buf, sizeof (who_buf),
5033                                     "%c%c$", set_type, locality);
5034                         (void) nvlist_add_boolean(top_nvl, who_buf);
5035                 }
5036         }
5037 }
5038
5039 static int
5040 construct_fsacl_list(boolean_t un, struct allow_opts *opts, nvlist_t **nvlp)
5041 {
5042         if (nvlist_alloc(nvlp, NV_UNIQUE_NAME, 0) != 0)
5043                 nomem();
5044
5045         if (opts->set) {
5046                 store_allow_perm(ZFS_DELEG_NAMED_SET, opts->local,
5047                     opts->descend, opts->who, opts->perms, *nvlp);
5048         } else if (opts->create) {
5049                 store_allow_perm(ZFS_DELEG_CREATE, opts->local,
5050                     opts->descend, NULL, opts->perms, *nvlp);
5051         } else if (opts->everyone) {
5052                 store_allow_perm(ZFS_DELEG_EVERYONE, opts->local,
5053                     opts->descend, NULL, opts->perms, *nvlp);
5054         } else {
5055                 char *curr = opts->who;
5056                 char *end = curr + strlen(curr);
5057
5058                 while (curr < end) {
5059                         const char *who;
5060                         zfs_deleg_who_type_t who_type;
5061                         char *endch;
5062                         char *delim = strchr(curr, ',');
5063                         char errbuf[256];
5064                         char id[64];
5065                         struct passwd *p = NULL;
5066                         struct group *g = NULL;
5067
5068                         uid_t rid;
5069                         if (delim == NULL)
5070                                 delim = end;
5071                         else
5072                                 *delim = '\0';
5073
5074                         rid = (uid_t)strtol(curr, &endch, 0);
5075                         if (opts->user) {
5076                                 who_type = ZFS_DELEG_USER;
5077                                 if (*endch != '\0')
5078                                         p = getpwnam(curr);
5079                                 else
5080                                         p = getpwuid(rid);
5081
5082                                 if (p != NULL)
5083                                         rid = p->pw_uid;
5084                                 else {
5085                                         (void) snprintf(errbuf, 256, gettext(
5086                                             "invalid user %s"), curr);
5087                                         allow_usage(un, B_TRUE, errbuf);
5088                                 }
5089                         } else if (opts->group) {
5090                                 who_type = ZFS_DELEG_GROUP;
5091                                 if (*endch != '\0')
5092                                         g = getgrnam(curr);
5093                                 else
5094                                         g = getgrgid(rid);
5095
5096                                 if (g != NULL)
5097                                         rid = g->gr_gid;
5098                                 else {
5099                                         (void) snprintf(errbuf, 256, gettext(
5100                                             "invalid group %s"),  curr);
5101                                         allow_usage(un, B_TRUE, errbuf);
5102                                 }
5103                         } else {
5104                                 if (*endch != '\0') {
5105                                         p = getpwnam(curr);
5106                                 } else {
5107                                         p = getpwuid(rid);
5108                                 }
5109
5110                                 if (p == NULL)
5111                                         if (*endch != '\0') {
5112                                                 g = getgrnam(curr);
5113                                         } else {
5114                                                 g = getgrgid(rid);
5115                                         }
5116
5117                                 if (p != NULL) {
5118                                         who_type = ZFS_DELEG_USER;
5119                                         rid = p->pw_uid;
5120                                 } else if (g != NULL) {
5121                                         who_type = ZFS_DELEG_GROUP;
5122                                         rid = g->gr_gid;
5123                                 } else {
5124                                         (void) snprintf(errbuf, 256, gettext(
5125                                             "invalid user/group %s"), curr);
5126                                         allow_usage(un, B_TRUE, errbuf);
5127                                 }
5128                         }
5129
5130                         (void) sprintf(id, "%u", rid);
5131                         who = id;
5132
5133                         store_allow_perm(who_type, opts->local,
5134                             opts->descend, who, opts->perms, *nvlp);
5135                         curr = delim + 1;
5136                 }
5137         }
5138
5139         return (0);
5140 }
5141
5142 static void
5143 print_set_creat_perms(uu_avl_t *who_avl)
5144 {
5145         const char *sc_title[] = {
5146                 gettext("Permission sets:\n"),
5147                 gettext("Create time permissions:\n"),
5148                 NULL
5149         };
5150         const char **title_ptr = sc_title;
5151         who_perm_node_t *who_node = NULL;
5152         int prev_weight = -1;
5153
5154         for (who_node = uu_avl_first(who_avl); who_node != NULL;
5155             who_node = uu_avl_next(who_avl, who_node)) {
5156                 uu_avl_t *avl = who_node->who_perm.who_deleg_perm_avl;
5157                 zfs_deleg_who_type_t who_type = who_node->who_perm.who_type;
5158                 const char *who_name = who_node->who_perm.who_name;
5159                 int weight = who_type2weight(who_type);
5160                 boolean_t first = B_TRUE;
5161                 deleg_perm_node_t *deleg_node;
5162
5163                 if (prev_weight != weight) {
5164                         (void) printf(*title_ptr++);
5165                         prev_weight = weight;
5166                 }
5167
5168                 if (who_name == NULL || strnlen(who_name, 1) == 0)
5169                         (void) printf("\t");
5170                 else
5171                         (void) printf("\t%s ", who_name);
5172
5173                 for (deleg_node = uu_avl_first(avl); deleg_node != NULL;
5174                     deleg_node = uu_avl_next(avl, deleg_node)) {
5175                         if (first) {
5176                                 (void) printf("%s",
5177                                     deleg_node->dpn_perm.dp_name);
5178                                 first = B_FALSE;
5179                         } else
5180                                 (void) printf(",%s",
5181                                     deleg_node->dpn_perm.dp_name);
5182                 }
5183
5184                 (void) printf("\n");
5185         }
5186 }
5187
5188 static void inline
5189 print_uge_deleg_perms(uu_avl_t *who_avl, boolean_t local, boolean_t descend,
5190     const char *title)
5191 {
5192         who_perm_node_t *who_node = NULL;
5193         boolean_t prt_title = B_TRUE;
5194         uu_avl_walk_t *walk;
5195
5196         if ((walk = uu_avl_walk_start(who_avl, UU_WALK_ROBUST)) == NULL)
5197                 nomem();
5198
5199         while ((who_node = uu_avl_walk_next(walk)) != NULL) {
5200                 const char *who_name = who_node->who_perm.who_name;
5201                 const char *nice_who_name = who_node->who_perm.who_ug_name;
5202                 uu_avl_t *avl = who_node->who_perm.who_deleg_perm_avl;
5203                 zfs_deleg_who_type_t who_type = who_node->who_perm.who_type;
5204                 char delim = ' ';
5205                 deleg_perm_node_t *deleg_node;
5206                 boolean_t prt_who = B_TRUE;
5207
5208                 for (deleg_node = uu_avl_first(avl);
5209                     deleg_node != NULL;
5210                     deleg_node = uu_avl_next(avl, deleg_node)) {
5211                         if (local != deleg_node->dpn_perm.dp_local ||
5212                             descend != deleg_node->dpn_perm.dp_descend)
5213                                 continue;
5214
5215                         if (prt_who) {
5216                                 const char *who = NULL;
5217                                 if (prt_title) {
5218                                         prt_title = B_FALSE;
5219                                         (void) printf(title);
5220                                 }
5221
5222                                 switch (who_type) {
5223                                 case ZFS_DELEG_USER_SETS:
5224                                 case ZFS_DELEG_USER:
5225                                         who = gettext("user");
5226                                         if (nice_who_name)
5227                                                 who_name  = nice_who_name;
5228                                         break;
5229                                 case ZFS_DELEG_GROUP_SETS:
5230                                 case ZFS_DELEG_GROUP:
5231                                         who = gettext("group");
5232                                         if (nice_who_name)
5233                                                 who_name  = nice_who_name;
5234                                         break;
5235                                 case ZFS_DELEG_EVERYONE_SETS:
5236                                 case ZFS_DELEG_EVERYONE:
5237                                         who = gettext("everyone");
5238                                         who_name = NULL;
5239                                 }
5240
5241                                 prt_who = B_FALSE;
5242                                 if (who_name == NULL)
5243                                         (void) printf("\t%s", who);
5244                                 else
5245                                         (void) printf("\t%s %s", who, who_name);
5246                         }
5247
5248                         (void) printf("%c%s", delim,
5249                             deleg_node->dpn_perm.dp_name);
5250                         delim = ',';
5251                 }
5252
5253                 if (!prt_who)
5254                         (void) printf("\n");
5255         }
5256
5257         uu_avl_walk_end(walk);
5258 }
5259
5260 static void
5261 print_fs_perms(fs_perm_set_t *fspset)
5262 {
5263         fs_perm_node_t *node = NULL;
5264         char buf[ZFS_MAXNAMELEN+32];
5265         const char *dsname = buf;
5266
5267         for (node = uu_list_first(fspset->fsps_list); node != NULL;
5268             node = uu_list_next(fspset->fsps_list, node)) {
5269                 uu_avl_t *sc_avl = node->fspn_fsperm.fsp_sc_avl;
5270                 uu_avl_t *uge_avl = node->fspn_fsperm.fsp_uge_avl;
5271                 int left = 0;
5272
5273                 (void) snprintf(buf, ZFS_MAXNAMELEN+32,
5274                     gettext("---- Permissions on %s "),
5275                     node->fspn_fsperm.fsp_name);
5276                 (void) printf(dsname);
5277                 left = 70 - strlen(buf);
5278                 while (left-- > 0)
5279                         (void) printf("-");
5280                 (void) printf("\n");
5281
5282                 print_set_creat_perms(sc_avl);
5283                 print_uge_deleg_perms(uge_avl, B_TRUE, B_FALSE,
5284                     gettext("Local permissions:\n"));
5285                 print_uge_deleg_perms(uge_avl, B_FALSE, B_TRUE,
5286                     gettext("Descendent permissions:\n"));
5287                 print_uge_deleg_perms(uge_avl, B_TRUE, B_TRUE,
5288                     gettext("Local+Descendent permissions:\n"));
5289         }
5290 }
5291
5292 static fs_perm_set_t fs_perm_set = { NULL, NULL, NULL, NULL };
5293
5294 struct deleg_perms {
5295         boolean_t un;
5296         nvlist_t *nvl;
5297 };
5298
5299 static int
5300 set_deleg_perms(zfs_handle_t *zhp, void *data)
5301 {
5302         struct deleg_perms *perms = (struct deleg_perms *)data;
5303         zfs_type_t zfs_type = zfs_get_type(zhp);
5304
5305         if (zfs_type != ZFS_TYPE_FILESYSTEM && zfs_type != ZFS_TYPE_VOLUME)
5306                 return (0);
5307
5308         return (zfs_set_fsacl(zhp, perms->un, perms->nvl));
5309 }
5310
5311 static int
5312 zfs_do_allow_unallow_impl(int argc, char **argv, boolean_t un)
5313 {
5314         zfs_handle_t *zhp;
5315         nvlist_t *perm_nvl = NULL;
5316         nvlist_t *update_perm_nvl = NULL;
5317         int error = 1;
5318         int c;
5319         struct allow_opts opts = { 0 };
5320
5321         const char *optstr = un ? "ldugecsrh" : "ldugecsh";
5322
5323         /* check opts */
5324         while ((c = getopt(argc, argv, optstr)) != -1) {
5325                 switch (c) {
5326                 case 'l':
5327                         opts.local = B_TRUE;
5328                         break;
5329                 case 'd':
5330                         opts.descend = B_TRUE;
5331                         break;
5332                 case 'u':
5333                         opts.user = B_TRUE;
5334                         break;
5335                 case 'g':
5336                         opts.group = B_TRUE;
5337                         break;
5338                 case 'e':
5339                         opts.everyone = B_TRUE;
5340                         break;
5341                 case 's':
5342                         opts.set = B_TRUE;
5343                         break;
5344                 case 'c':
5345                         opts.create = B_TRUE;
5346                         break;
5347                 case 'r':
5348                         opts.recursive = B_TRUE;
5349                         break;
5350                 case ':':
5351                         (void) fprintf(stderr, gettext("missing argument for "
5352                             "'%c' option\n"), optopt);
5353                         usage(B_FALSE);
5354                         break;
5355                 case 'h':
5356                         opts.prt_usage = B_TRUE;
5357                         break;
5358                 case '?':
5359                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5360                             optopt);
5361                         usage(B_FALSE);
5362                 }
5363         }
5364
5365         argc -= optind;
5366         argv += optind;
5367
5368         /* check arguments */
5369         parse_allow_args(argc, argv, un, &opts);
5370
5371         /* try to open the dataset */
5372         if ((zhp = zfs_open(g_zfs, opts.dataset, ZFS_TYPE_FILESYSTEM |
5373             ZFS_TYPE_VOLUME)) == NULL) {
5374                 (void) fprintf(stderr, "Failed to open dataset: %s\n",
5375                     opts.dataset);
5376                 return (-1);
5377         }
5378
5379         if (zfs_get_fsacl(zhp, &perm_nvl) != 0)
5380                 goto cleanup2;
5381
5382         fs_perm_set_init(&fs_perm_set);
5383         if (parse_fs_perm_set(&fs_perm_set, perm_nvl) != 0) {
5384                 (void) fprintf(stderr, "Failed to parse fsacl permissions\n");
5385                 goto cleanup1;
5386         }
5387
5388         if (opts.prt_perms)
5389                 print_fs_perms(&fs_perm_set);
5390         else {
5391                 (void) construct_fsacl_list(un, &opts, &update_perm_nvl);
5392                 if (zfs_set_fsacl(zhp, un, update_perm_nvl) != 0)
5393                         goto cleanup0;
5394
5395                 if (un && opts.recursive) {
5396                         struct deleg_perms data = { un, update_perm_nvl };
5397                         if (zfs_iter_filesystems(zhp, set_deleg_perms,
5398                             &data) != 0)
5399                                 goto cleanup0;
5400                 }
5401         }
5402
5403         error = 0;
5404
5405 cleanup0:
5406         nvlist_free(perm_nvl);
5407         if (update_perm_nvl != NULL)
5408                 nvlist_free(update_perm_nvl);
5409 cleanup1:
5410         fs_perm_set_fini(&fs_perm_set);
5411 cleanup2:
5412         zfs_close(zhp);
5413
5414         return (error);
5415 }
5416
5417 static int
5418 zfs_do_allow(int argc, char **argv)
5419 {
5420         return (zfs_do_allow_unallow_impl(argc, argv, B_FALSE));
5421 }
5422
5423 static int
5424 zfs_do_unallow(int argc, char **argv)
5425 {
5426         return (zfs_do_allow_unallow_impl(argc, argv, B_TRUE));
5427 }
5428
5429 static int
5430 zfs_do_hold_rele_impl(int argc, char **argv, boolean_t holding)
5431 {
5432         int errors = 0;
5433         int i;
5434         const char *tag;
5435         boolean_t recursive = B_FALSE;
5436         const char *opts = holding ? "rt" : "r";
5437         int c;
5438
5439         /* check options */
5440         while ((c = getopt(argc, argv, opts)) != -1) {
5441                 switch (c) {
5442                 case 'r':
5443                         recursive = B_TRUE;
5444                         break;
5445                 case '?':
5446                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5447                             optopt);
5448                         usage(B_FALSE);
5449                 }
5450         }
5451
5452         argc -= optind;
5453         argv += optind;
5454
5455         /* check number of arguments */
5456         if (argc < 2)
5457                 usage(B_FALSE);
5458
5459         tag = argv[0];
5460         --argc;
5461         ++argv;
5462
5463         if (holding && tag[0] == '.') {
5464                 /* tags starting with '.' are reserved for libzfs */
5465                 (void) fprintf(stderr, gettext("tag may not start with '.'\n"));
5466                 usage(B_FALSE);
5467         }
5468
5469         for (i = 0; i < argc; ++i) {
5470                 zfs_handle_t *zhp;
5471                 char parent[ZFS_MAXNAMELEN];
5472                 const char *delim;
5473                 char *path = argv[i];
5474
5475                 delim = strchr(path, '@');
5476                 if (delim == NULL) {
5477                         (void) fprintf(stderr,
5478                             gettext("'%s' is not a snapshot\n"), path);
5479                         ++errors;
5480                         continue;
5481                 }
5482                 (void) strncpy(parent, path, delim - path);
5483                 parent[delim - path] = '\0';
5484
5485                 zhp = zfs_open(g_zfs, parent,
5486                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
5487                 if (zhp == NULL) {
5488                         ++errors;
5489                         continue;
5490                 }
5491                 if (holding) {
5492                         if (zfs_hold(zhp, delim+1, tag, recursive, -1) != 0)
5493                                 ++errors;
5494                 } else {
5495                         if (zfs_release(zhp, delim+1, tag, recursive) != 0)
5496                                 ++errors;
5497                 }
5498                 zfs_close(zhp);
5499         }
5500
5501         return (errors != 0);
5502 }
5503
5504 /*
5505  * zfs hold [-r] [-t] <tag> <snap> ...
5506  *
5507  *      -r      Recursively hold
5508  *
5509  * Apply a user-hold with the given tag to the list of snapshots.
5510  */
5511 static int
5512 zfs_do_hold(int argc, char **argv)
5513 {
5514         return (zfs_do_hold_rele_impl(argc, argv, B_TRUE));
5515 }
5516
5517 /*
5518  * zfs release [-r] <tag> <snap> ...
5519  *
5520  *      -r      Recursively release
5521  *
5522  * Release a user-hold with the given tag from the list of snapshots.
5523  */
5524 static int
5525 zfs_do_release(int argc, char **argv)
5526 {
5527         return (zfs_do_hold_rele_impl(argc, argv, B_FALSE));
5528 }
5529
5530 typedef struct holds_cbdata {
5531         boolean_t       cb_recursive;
5532         const char      *cb_snapname;
5533         nvlist_t        **cb_nvlp;
5534         size_t          cb_max_namelen;
5535         size_t          cb_max_taglen;
5536 } holds_cbdata_t;
5537
5538 #define STRFTIME_FMT_STR "%a %b %e %k:%M %Y"
5539 #define DATETIME_BUF_LEN (32)
5540 /*
5541  *
5542  */
5543 static void
5544 print_holds(boolean_t scripted, size_t nwidth, size_t tagwidth, nvlist_t *nvl)
5545 {
5546         int i;
5547         nvpair_t *nvp = NULL;
5548         char *hdr_cols[] = { "NAME", "TAG", "TIMESTAMP" };
5549         const char *col;
5550
5551         if (!scripted) {
5552                 for (i = 0; i < 3; i++) {
5553                         col = gettext(hdr_cols[i]);
5554                         if (i < 2)
5555                                 (void) printf("%-*s  ", i ? tagwidth : nwidth,
5556                                     col);
5557                         else
5558                                 (void) printf("%s\n", col);
5559                 }
5560         }
5561
5562         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
5563                 char *zname = nvpair_name(nvp);
5564                 nvlist_t *nvl2;
5565                 nvpair_t *nvp2 = NULL;
5566                 (void) nvpair_value_nvlist(nvp, &nvl2);
5567                 while ((nvp2 = nvlist_next_nvpair(nvl2, nvp2)) != NULL) {
5568                         char tsbuf[DATETIME_BUF_LEN];
5569                         char *tagname = nvpair_name(nvp2);
5570                         uint64_t val = 0;
5571                         time_t time;
5572                         struct tm t;
5573                         char sep = scripted ? '\t' : ' ';
5574                         size_t sepnum = scripted ? 1 : 2;
5575
5576                         (void) nvpair_value_uint64(nvp2, &val);
5577                         time = (time_t)val;
5578                         (void) localtime_r(&time, &t);
5579                         (void) strftime(tsbuf, DATETIME_BUF_LEN,
5580                             gettext(STRFTIME_FMT_STR), &t);
5581
5582                         (void) printf("%-*s%*c%-*s%*c%s\n", nwidth, zname,
5583                             sepnum, sep, tagwidth, tagname, sepnum, sep, tsbuf);
5584                 }
5585         }
5586 }
5587
5588 /*
5589  * Generic callback function to list a dataset or snapshot.
5590  */
5591 static int
5592 holds_callback(zfs_handle_t *zhp, void *data)
5593 {
5594         holds_cbdata_t *cbp = data;
5595         nvlist_t *top_nvl = *cbp->cb_nvlp;
5596         nvlist_t *nvl = NULL;
5597         nvpair_t *nvp = NULL;
5598         const char *zname = zfs_get_name(zhp);
5599         size_t znamelen = strnlen(zname, ZFS_MAXNAMELEN);
5600
5601         if (cbp->cb_recursive) {
5602                 const char *snapname;
5603                 char *delim  = strchr(zname, '@');
5604                 if (delim == NULL)
5605                         return (0);
5606
5607                 snapname = delim + 1;
5608                 if (strcmp(cbp->cb_snapname, snapname))
5609                         return (0);
5610         }
5611
5612         if (zfs_get_holds(zhp, &nvl) != 0)
5613                 return (-1);
5614
5615         if (znamelen > cbp->cb_max_namelen)
5616                 cbp->cb_max_namelen  = znamelen;
5617
5618         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
5619                 const char *tag = nvpair_name(nvp);
5620                 size_t taglen = strnlen(tag, MAXNAMELEN);
5621                 if (taglen > cbp->cb_max_taglen)
5622                         cbp->cb_max_taglen  = taglen;
5623         }
5624
5625         return (nvlist_add_nvlist(top_nvl, zname, nvl));
5626 }
5627
5628 /*
5629  * zfs holds [-r] <snap> ...
5630  *
5631  *      -r      Recursively hold
5632  */
5633 static int
5634 zfs_do_holds(int argc, char **argv)
5635 {
5636         int errors = 0;
5637         int c;
5638         int i;
5639         boolean_t scripted = B_FALSE;
5640         boolean_t recursive = B_FALSE;
5641         const char *opts = "rH";
5642         nvlist_t *nvl;
5643
5644         int types = ZFS_TYPE_SNAPSHOT;
5645         holds_cbdata_t cb = { 0 };
5646
5647         int limit = 0;
5648         int ret = 0;
5649         int flags = 0;
5650
5651         /* check options */
5652         while ((c = getopt(argc, argv, opts)) != -1) {
5653                 switch (c) {
5654                 case 'r':
5655                         recursive = B_TRUE;
5656                         break;
5657                 case 'H':
5658                         scripted = B_TRUE;
5659                         break;
5660                 case '?':
5661                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5662                             optopt);
5663                         usage(B_FALSE);
5664                 }
5665         }
5666
5667         if (recursive) {
5668                 types |= ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME;
5669                 flags |= ZFS_ITER_RECURSE;
5670         }
5671
5672         argc -= optind;
5673         argv += optind;
5674
5675         /* check number of arguments */
5676         if (argc < 1)
5677                 usage(B_FALSE);
5678
5679         if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0)
5680                 nomem();
5681
5682         for (i = 0; i < argc; ++i) {
5683                 char *snapshot = argv[i];
5684                 const char *delim;
5685                 const char *snapname;
5686
5687                 delim = strchr(snapshot, '@');
5688                 if (delim == NULL) {
5689                         (void) fprintf(stderr,
5690                             gettext("'%s' is not a snapshot\n"), snapshot);
5691                         ++errors;
5692                         continue;
5693                 }
5694                 snapname = delim + 1;
5695                 if (recursive)
5696                         snapshot[delim - snapshot] = '\0';
5697
5698                 cb.cb_recursive = recursive;
5699                 cb.cb_snapname = snapname;
5700                 cb.cb_nvlp = &nvl;
5701
5702                 /*
5703                  *  1. collect holds data, set format options
5704                  */
5705                 ret = zfs_for_each(argc, argv, flags, types, NULL, NULL, limit,
5706                     holds_callback, &cb);
5707                 if (ret != 0)
5708                         ++errors;
5709         }
5710
5711         /*
5712          *  2. print holds data
5713          */
5714         print_holds(scripted, cb.cb_max_namelen, cb.cb_max_taglen, nvl);
5715
5716         if (nvlist_empty(nvl))
5717                 (void) printf(gettext("no datasets available\n"));
5718
5719         nvlist_free(nvl);
5720
5721         return (0 != errors);
5722 }
5723
5724 #define CHECK_SPINNER 30
5725 #define SPINNER_TIME 3          /* seconds */
5726 #define MOUNT_TIME 5            /* seconds */
5727
5728 static int
5729 get_one_dataset(zfs_handle_t *zhp, void *data)
5730 {
5731         static char *spin[] = { "-", "\\", "|", "/" };
5732         static int spinval = 0;
5733         static int spincheck = 0;
5734         static time_t last_spin_time = (time_t)0;
5735         get_all_cb_t *cbp = data;
5736         zfs_type_t type = zfs_get_type(zhp);
5737
5738         if (cbp->cb_verbose) {
5739                 if (--spincheck < 0) {
5740                         time_t now = time(NULL);
5741                         if (last_spin_time + SPINNER_TIME < now) {
5742                                 update_progress(spin[spinval++ % 4]);
5743                                 last_spin_time = now;
5744                         }
5745                         spincheck = CHECK_SPINNER;
5746                 }
5747         }
5748
5749         /*
5750          * Interate over any nested datasets.
5751          */
5752         if (zfs_iter_filesystems(zhp, get_one_dataset, data) != 0) {
5753                 zfs_close(zhp);
5754                 return (1);
5755         }
5756
5757         /*
5758          * Skip any datasets whose type does not match.
5759          */
5760         if ((type & ZFS_TYPE_FILESYSTEM) == 0) {
5761                 zfs_close(zhp);
5762                 return (0);
5763         }
5764         libzfs_add_handle(cbp, zhp);
5765         assert(cbp->cb_used <= cbp->cb_alloc);
5766
5767         return (0);
5768 }
5769
5770 static void
5771 get_all_datasets(zfs_handle_t ***dslist, size_t *count, boolean_t verbose)
5772 {
5773         get_all_cb_t cb = { 0 };
5774         cb.cb_verbose = verbose;
5775         cb.cb_getone = get_one_dataset;
5776
5777         if (verbose)
5778                 set_progress_header(gettext("Reading ZFS config"));
5779         (void) zfs_iter_root(g_zfs, get_one_dataset, &cb);
5780
5781         *dslist = cb.cb_handles;
5782         *count = cb.cb_used;
5783
5784         if (verbose)
5785                 finish_progress(gettext("done."));
5786 }
5787
5788 /*
5789  * Generic callback for sharing or mounting filesystems.  Because the code is so
5790  * similar, we have a common function with an extra parameter to determine which
5791  * mode we are using.
5792  */
5793 #define OP_SHARE        0x1
5794 #define OP_MOUNT        0x2
5795
5796 /*
5797  * Share or mount a dataset.
5798  */
5799 static int
5800 share_mount_one(zfs_handle_t *zhp, int op, int flags, char *protocol,
5801     boolean_t explicit, const char *options)
5802 {
5803         char mountpoint[ZFS_MAXPROPLEN];
5804         char shareopts[ZFS_MAXPROPLEN];
5805         char smbshareopts[ZFS_MAXPROPLEN];
5806         const char *cmdname = op == OP_SHARE ? "share" : "mount";
5807         struct mnttab mnt;
5808         uint64_t zoned, canmount;
5809         boolean_t shared_nfs, shared_smb;
5810
5811         assert(zfs_get_type(zhp) & ZFS_TYPE_FILESYSTEM);
5812
5813         /*
5814          * Check to make sure we can mount/share this dataset.  If we
5815          * are in the global zone and the filesystem is exported to a
5816          * local zone, or if we are in a local zone and the
5817          * filesystem is not exported, then it is an error.
5818          */
5819         zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED);
5820
5821         if (zoned && getzoneid() == GLOBAL_ZONEID) {
5822                 if (!explicit)
5823                         return (0);
5824
5825                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5826                     "dataset is exported to a local zone\n"), cmdname,
5827                     zfs_get_name(zhp));
5828                 return (1);
5829
5830         } else if (!zoned && getzoneid() != GLOBAL_ZONEID) {
5831                 if (!explicit)
5832                         return (0);
5833
5834                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5835                     "permission denied\n"), cmdname,
5836                     zfs_get_name(zhp));
5837                 return (1);
5838         }
5839
5840         /*
5841          * Ignore any filesystems which don't apply to us. This
5842          * includes those with a legacy mountpoint, or those with
5843          * legacy share options.
5844          */
5845         verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
5846             sizeof (mountpoint), NULL, NULL, 0, B_FALSE) == 0);
5847         verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, shareopts,
5848             sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0);
5849         verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshareopts,
5850             sizeof (smbshareopts), NULL, NULL, 0, B_FALSE) == 0);
5851
5852         if (op == OP_SHARE && strcmp(shareopts, "off") == 0 &&
5853             strcmp(smbshareopts, "off") == 0) {
5854                 if (!explicit)
5855                         return (0);
5856
5857                 (void) fprintf(stderr, gettext("cannot share '%s': "
5858                     "legacy share\n"), zfs_get_name(zhp));
5859                 (void) fprintf(stderr, gettext("to "
5860                     "share this filesystem set "
5861                     "sharenfs property on\n"));
5862                 return (1);
5863         }
5864
5865         /*
5866          * We cannot share or mount legacy filesystems. If the
5867          * shareopts is non-legacy but the mountpoint is legacy, we
5868          * treat it as a legacy share.
5869          */
5870         if (strcmp(mountpoint, "legacy") == 0) {
5871                 if (!explicit)
5872                         return (0);
5873
5874                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5875                     "legacy mountpoint\n"), cmdname, zfs_get_name(zhp));
5876                 (void) fprintf(stderr, gettext("use %s(8) to "
5877                     "%s this filesystem\n"), cmdname, cmdname);
5878                 return (1);
5879         }
5880
5881         if (strcmp(mountpoint, "none") == 0) {
5882                 if (!explicit)
5883                         return (0);
5884
5885                 (void) fprintf(stderr, gettext("cannot %s '%s': no "
5886                     "mountpoint set\n"), cmdname, zfs_get_name(zhp));
5887                 return (1);
5888         }
5889
5890         /*
5891          * canmount     explicit        outcome
5892          * on           no              pass through
5893          * on           yes             pass through
5894          * off          no              return 0
5895          * off          yes             display error, return 1
5896          * noauto       no              return 0
5897          * noauto       yes             pass through
5898          */
5899         canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT);
5900         if (canmount == ZFS_CANMOUNT_OFF) {
5901                 if (!explicit)
5902                         return (0);
5903
5904                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5905                     "'canmount' property is set to 'off'\n"), cmdname,
5906                     zfs_get_name(zhp));
5907                 return (1);
5908         } else if (canmount == ZFS_CANMOUNT_NOAUTO && !explicit) {
5909                 return (0);
5910         }
5911
5912         /*
5913          * If this filesystem is inconsistent and has a receive resume
5914          * token, we can not mount it.
5915          */
5916         if (zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) &&
5917             zfs_prop_get(zhp, ZFS_PROP_RECEIVE_RESUME_TOKEN,
5918             NULL, 0, NULL, NULL, 0, B_TRUE) == 0) {
5919                 if (!explicit)
5920                         return (0);
5921
5922                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5923                     "Contains partially-completed state from "
5924                     "\"zfs receive -r\", which can be resumed with "
5925                     "\"zfs send -t\"\n"),
5926                     cmdname, zfs_get_name(zhp));
5927                 return (1);
5928         }
5929
5930         /*
5931          * At this point, we have verified that the mountpoint and/or
5932          * shareopts are appropriate for auto management. If the
5933          * filesystem is already mounted or shared, return (failing
5934          * for explicit requests); otherwise mount or share the
5935          * filesystem.
5936          */
5937         switch (op) {
5938         case OP_SHARE:
5939
5940                 shared_nfs = zfs_is_shared_nfs(zhp, NULL);
5941                 shared_smb = zfs_is_shared_smb(zhp, NULL);
5942
5943                 if (shared_nfs && shared_smb ||
5944                     (shared_nfs && strcmp(shareopts, "on") == 0 &&
5945                     strcmp(smbshareopts, "off") == 0) ||
5946                     (shared_smb && strcmp(smbshareopts, "on") == 0 &&
5947                     strcmp(shareopts, "off") == 0)) {
5948                         if (!explicit)
5949                                 return (0);
5950
5951                         (void) fprintf(stderr, gettext("cannot share "
5952                             "'%s': filesystem already shared\n"),
5953                             zfs_get_name(zhp));
5954                         return (1);
5955                 }
5956
5957                 if (!zfs_is_mounted(zhp, NULL) &&
5958                     zfs_mount(zhp, NULL, 0) != 0)
5959                         return (1);
5960
5961                 if (protocol == NULL) {
5962                         if (zfs_shareall(zhp) != 0)
5963                                 return (1);
5964                 } else if (strcmp(protocol, "nfs") == 0) {
5965                         if (zfs_share_nfs(zhp))
5966                                 return (1);
5967                 } else if (strcmp(protocol, "smb") == 0) {
5968                         if (zfs_share_smb(zhp))
5969                                 return (1);
5970                 } else {
5971                         (void) fprintf(stderr, gettext("cannot share "
5972                             "'%s': invalid share type '%s' "
5973                             "specified\n"),
5974                             zfs_get_name(zhp), protocol);
5975                         return (1);
5976                 }
5977
5978                 break;
5979
5980         case OP_MOUNT:
5981                 if (options == NULL)
5982                         mnt.mnt_mntopts = "";
5983                 else
5984                         mnt.mnt_mntopts = (char *)options;
5985
5986                 if (!hasmntopt(&mnt, MNTOPT_REMOUNT) &&
5987                     zfs_is_mounted(zhp, NULL)) {
5988                         if (!explicit)
5989                                 return (0);
5990
5991                         (void) fprintf(stderr, gettext("cannot mount "
5992                             "'%s': filesystem already mounted\n"),
5993                             zfs_get_name(zhp));
5994                         return (1);
5995                 }
5996
5997                 if (zfs_mount(zhp, options, flags) != 0)
5998                         return (1);
5999                 break;
6000         }
6001
6002         return (0);
6003 }
6004
6005 /*
6006  * Reports progress in the form "(current/total)".  Not thread-safe.
6007  */
6008 static void
6009 report_mount_progress(int current, int total)
6010 {
6011         static time_t last_progress_time = 0;
6012         time_t now = time(NULL);
6013         char info[32];
6014
6015         /* report 1..n instead of 0..n-1 */
6016         ++current;
6017
6018         /* display header if we're here for the first time */
6019         if (current == 1) {
6020                 set_progress_header(gettext("Mounting ZFS filesystems"));
6021         } else if (current != total && last_progress_time + MOUNT_TIME >= now) {
6022                 /* too soon to report again */
6023                 return;
6024         }
6025
6026         last_progress_time = now;
6027
6028         (void) sprintf(info, "(%d/%d)", current, total);
6029
6030         if (current == total)
6031                 finish_progress(info);
6032         else
6033                 update_progress(info);
6034 }
6035
6036 static void
6037 append_options(char *mntopts, char *newopts)
6038 {
6039         int len = strlen(mntopts);
6040
6041         /* original length plus new string to append plus 1 for the comma */
6042         if (len + 1 + strlen(newopts) >= MNT_LINE_MAX) {
6043                 (void) fprintf(stderr, gettext("the opts argument for "
6044                     "'%c' option is too long (more than %d chars)\n"),
6045                     "-o", MNT_LINE_MAX);
6046                 usage(B_FALSE);
6047         }
6048
6049         if (*mntopts)
6050                 mntopts[len++] = ',';
6051
6052         (void) strcpy(&mntopts[len], newopts);
6053 }
6054
6055 static int
6056 share_mount(int op, int argc, char **argv)
6057 {
6058         int do_all = 0;
6059         boolean_t verbose = B_FALSE;
6060         int c, ret = 0;
6061         char *options = NULL;
6062         int flags = 0;
6063
6064         /* check options */
6065         while ((c = getopt(argc, argv, op == OP_MOUNT ? ":avo:O" : "a"))
6066             != -1) {
6067                 switch (c) {
6068                 case 'a':
6069                         do_all = 1;
6070                         break;
6071                 case 'v':
6072                         verbose = B_TRUE;
6073                         break;
6074                 case 'o':
6075                         if (*optarg == '\0') {
6076                                 (void) fprintf(stderr, gettext("empty mount "
6077                                     "options (-o) specified\n"));
6078                                 usage(B_FALSE);
6079                         }
6080
6081                         if (options == NULL)
6082                                 options = safe_malloc(MNT_LINE_MAX + 1);
6083
6084                         /* option validation is done later */
6085                         append_options(options, optarg);
6086                         break;
6087
6088                 case 'O':
6089                         warnx("no overlay mounts support on FreeBSD, ignoring");
6090                         break;
6091                 case ':':
6092                         (void) fprintf(stderr, gettext("missing argument for "
6093                             "'%c' option\n"), optopt);
6094                         usage(B_FALSE);
6095                         break;
6096                 case '?':
6097                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6098                             optopt);
6099                         usage(B_FALSE);
6100                 }
6101         }
6102
6103         argc -= optind;
6104         argv += optind;
6105
6106         /* check number of arguments */
6107         if (do_all) {
6108                 zfs_handle_t **dslist = NULL;
6109                 size_t i, count = 0;
6110                 char *protocol = NULL;
6111
6112                 if (op == OP_SHARE && argc > 0) {
6113                         if (strcmp(argv[0], "nfs") != 0 &&
6114                             strcmp(argv[0], "smb") != 0) {
6115                                 (void) fprintf(stderr, gettext("share type "
6116                                     "must be 'nfs' or 'smb'\n"));
6117                                 usage(B_FALSE);
6118                         }
6119                         protocol = argv[0];
6120                         argc--;
6121                         argv++;
6122                 }
6123
6124                 if (argc != 0) {
6125                         (void) fprintf(stderr, gettext("too many arguments\n"));
6126                         usage(B_FALSE);
6127                 }
6128
6129                 start_progress_timer();
6130                 get_all_datasets(&dslist, &count, verbose);
6131
6132                 if (count == 0)
6133                         return (0);
6134
6135                 qsort(dslist, count, sizeof (void *), libzfs_dataset_cmp);
6136
6137                 for (i = 0; i < count; i++) {
6138                         if (verbose)
6139                                 report_mount_progress(i, count);
6140
6141                         if (share_mount_one(dslist[i], op, flags, protocol,
6142                             B_FALSE, options) != 0)
6143                                 ret = 1;
6144                         zfs_close(dslist[i]);
6145                 }
6146
6147                 free(dslist);
6148         } else if (argc == 0) {
6149                 struct mnttab entry;
6150
6151                 if ((op == OP_SHARE) || (options != NULL)) {
6152                         (void) fprintf(stderr, gettext("missing filesystem "
6153                             "argument (specify -a for all)\n"));
6154                         usage(B_FALSE);
6155                 }
6156
6157                 /*
6158                  * When mount is given no arguments, go through /etc/mnttab and
6159                  * display any active ZFS mounts.  We hide any snapshots, since
6160                  * they are controlled automatically.
6161                  */
6162                 rewind(mnttab_file);
6163                 while (getmntent(mnttab_file, &entry) == 0) {
6164                         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0 ||
6165                             strchr(entry.mnt_special, '@') != NULL)
6166                                 continue;
6167
6168                         (void) printf("%-30s  %s\n", entry.mnt_special,
6169                             entry.mnt_mountp);
6170                 }
6171
6172         } else {
6173                 zfs_handle_t *zhp;
6174
6175                 if (argc > 1) {
6176                         (void) fprintf(stderr,
6177                             gettext("too many arguments\n"));
6178                         usage(B_FALSE);
6179                 }
6180
6181                 if ((zhp = zfs_open(g_zfs, argv[0],
6182                     ZFS_TYPE_FILESYSTEM)) == NULL) {
6183                         ret = 1;
6184                 } else {
6185                         ret = share_mount_one(zhp, op, flags, NULL, B_TRUE,
6186                             options);
6187                         zfs_close(zhp);
6188                 }
6189         }
6190
6191         return (ret);
6192 }
6193
6194 /*
6195  * zfs mount -a [nfs]
6196  * zfs mount filesystem
6197  *
6198  * Mount all filesystems, or mount the given filesystem.
6199  */
6200 static int
6201 zfs_do_mount(int argc, char **argv)
6202 {
6203         return (share_mount(OP_MOUNT, argc, argv));
6204 }
6205
6206 /*
6207  * zfs share -a [nfs | smb]
6208  * zfs share filesystem
6209  *
6210  * Share all filesystems, or share the given filesystem.
6211  */
6212 static int
6213 zfs_do_share(int argc, char **argv)
6214 {
6215         return (share_mount(OP_SHARE, argc, argv));
6216 }
6217
6218 typedef struct unshare_unmount_node {
6219         zfs_handle_t    *un_zhp;
6220         char            *un_mountp;
6221         uu_avl_node_t   un_avlnode;
6222 } unshare_unmount_node_t;
6223
6224 /* ARGSUSED */
6225 static int
6226 unshare_unmount_compare(const void *larg, const void *rarg, void *unused)
6227 {
6228         const unshare_unmount_node_t *l = larg;
6229         const unshare_unmount_node_t *r = rarg;
6230
6231         return (strcmp(l->un_mountp, r->un_mountp));
6232 }
6233
6234 /*
6235  * Convenience routine used by zfs_do_umount() and manual_unmount().  Given an
6236  * absolute path, find the entry /etc/mnttab, verify that its a ZFS filesystem,
6237  * and unmount it appropriately.
6238  */
6239 static int
6240 unshare_unmount_path(int op, char *path, int flags, boolean_t is_manual)
6241 {
6242         zfs_handle_t *zhp;
6243         int ret = 0;
6244         struct stat64 statbuf;
6245         struct extmnttab entry;
6246         const char *cmdname = (op == OP_SHARE) ? "unshare" : "unmount";
6247         ino_t path_inode;
6248
6249         /*
6250          * Search for the path in /etc/mnttab.  Rather than looking for the
6251          * specific path, which can be fooled by non-standard paths (i.e. ".."
6252          * or "//"), we stat() the path and search for the corresponding
6253          * (major,minor) device pair.
6254          */
6255         if (stat64(path, &statbuf) != 0) {
6256                 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
6257                     cmdname, path, strerror(errno));
6258                 return (1);
6259         }
6260         path_inode = statbuf.st_ino;
6261
6262         /*
6263          * Search for the given (major,minor) pair in the mount table.
6264          */
6265 #ifdef sun
6266         rewind(mnttab_file);
6267         while ((ret = getextmntent(mnttab_file, &entry, 0)) == 0) {
6268                 if (entry.mnt_major == major(statbuf.st_dev) &&
6269                     entry.mnt_minor == minor(statbuf.st_dev))
6270                         break;
6271         }
6272 #else
6273         {
6274                 struct statfs sfs;
6275
6276                 if (statfs(path, &sfs) != 0) {
6277                         (void) fprintf(stderr, "%s: %s\n", path,
6278                             strerror(errno));
6279                         ret = -1;
6280                 }
6281                 statfs2mnttab(&sfs, &entry);
6282         }
6283 #endif
6284         if (ret != 0) {
6285                 if (op == OP_SHARE) {
6286                         (void) fprintf(stderr, gettext("cannot %s '%s': not "
6287                             "currently mounted\n"), cmdname, path);
6288                         return (1);
6289                 }
6290                 (void) fprintf(stderr, gettext("warning: %s not in mnttab\n"),
6291                     path);
6292                 if ((ret = umount2(path, flags)) != 0)
6293                         (void) fprintf(stderr, gettext("%s: %s\n"), path,
6294                             strerror(errno));
6295                 return (ret != 0);
6296         }
6297
6298         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) {
6299                 (void) fprintf(stderr, gettext("cannot %s '%s': not a ZFS "
6300                     "filesystem\n"), cmdname, path);
6301                 return (1);
6302         }
6303
6304         if ((zhp = zfs_open(g_zfs, entry.mnt_special,
6305             ZFS_TYPE_FILESYSTEM)) == NULL)
6306                 return (1);
6307
6308         ret = 1;
6309         if (stat64(entry.mnt_mountp, &statbuf) != 0) {
6310                 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
6311                     cmdname, path, strerror(errno));
6312                 goto out;
6313         } else if (statbuf.st_ino != path_inode) {
6314                 (void) fprintf(stderr, gettext("cannot "
6315                     "%s '%s': not a mountpoint\n"), cmdname, path);
6316                 goto out;
6317         }
6318
6319         if (op == OP_SHARE) {
6320                 char nfs_mnt_prop[ZFS_MAXPROPLEN];
6321                 char smbshare_prop[ZFS_MAXPROPLEN];
6322
6323                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, nfs_mnt_prop,
6324                     sizeof (nfs_mnt_prop), NULL, NULL, 0, B_FALSE) == 0);
6325                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshare_prop,
6326                     sizeof (smbshare_prop), NULL, NULL, 0, B_FALSE) == 0);
6327
6328                 if (strcmp(nfs_mnt_prop, "off") == 0 &&
6329                     strcmp(smbshare_prop, "off") == 0) {
6330                         (void) fprintf(stderr, gettext("cannot unshare "
6331                             "'%s': legacy share\n"), path);
6332 #ifdef illumos
6333                         (void) fprintf(stderr, gettext("use "
6334                             "unshare(1M) to unshare this filesystem\n"));
6335 #endif
6336                 } else if (!zfs_is_shared(zhp)) {
6337                         (void) fprintf(stderr, gettext("cannot unshare '%s': "
6338                             "not currently shared\n"), path);
6339                 } else {
6340                         ret = zfs_unshareall_bypath(zhp, path);
6341                 }
6342         } else {
6343                 char mtpt_prop[ZFS_MAXPROPLEN];
6344
6345                 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mtpt_prop,
6346                     sizeof (mtpt_prop), NULL, NULL, 0, B_FALSE) == 0);
6347
6348                 if (is_manual) {
6349                         ret = zfs_unmount(zhp, NULL, flags);
6350                 } else if (strcmp(mtpt_prop, "legacy") == 0) {
6351                         (void) fprintf(stderr, gettext("cannot unmount "
6352                             "'%s': legacy mountpoint\n"),
6353                             zfs_get_name(zhp));
6354                         (void) fprintf(stderr, gettext("use umount(8) "
6355                             "to unmount this filesystem\n"));
6356                 } else {
6357                         ret = zfs_unmountall(zhp, flags);
6358                 }
6359         }
6360
6361 out:
6362         zfs_close(zhp);
6363
6364         return (ret != 0);
6365 }
6366
6367 /*
6368  * Generic callback for unsharing or unmounting a filesystem.
6369  */
6370 static int
6371 unshare_unmount(int op, int argc, char **argv)
6372 {
6373         int do_all = 0;
6374         int flags = 0;
6375         int ret = 0;
6376         int c;
6377         zfs_handle_t *zhp;
6378         char nfs_mnt_prop[ZFS_MAXPROPLEN];
6379         char sharesmb[ZFS_MAXPROPLEN];
6380
6381         /* check options */
6382         while ((c = getopt(argc, argv, op == OP_SHARE ? "a" : "af")) != -1) {
6383                 switch (c) {
6384                 case 'a':
6385                         do_all = 1;
6386                         break;
6387                 case 'f':
6388                         flags = MS_FORCE;
6389                         break;
6390                 case '?':
6391                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6392                             optopt);
6393                         usage(B_FALSE);
6394                 }
6395         }
6396
6397         argc -= optind;
6398         argv += optind;
6399
6400         if (do_all) {
6401                 /*
6402                  * We could make use of zfs_for_each() to walk all datasets in
6403                  * the system, but this would be very inefficient, especially
6404                  * since we would have to linearly search /etc/mnttab for each
6405                  * one.  Instead, do one pass through /etc/mnttab looking for
6406                  * zfs entries and call zfs_unmount() for each one.
6407                  *
6408                  * Things get a little tricky if the administrator has created
6409                  * mountpoints beneath other ZFS filesystems.  In this case, we
6410                  * have to unmount the deepest filesystems first.  To accomplish
6411                  * this, we place all the mountpoints in an AVL tree sorted by
6412                  * the special type (dataset name), and walk the result in
6413                  * reverse to make sure to get any snapshots first.
6414                  */
6415                 struct mnttab entry;
6416                 uu_avl_pool_t *pool;
6417                 uu_avl_t *tree;
6418                 unshare_unmount_node_t *node;
6419                 uu_avl_index_t idx;
6420                 uu_avl_walk_t *walk;
6421
6422                 if (argc != 0) {
6423                         (void) fprintf(stderr, gettext("too many arguments\n"));
6424                         usage(B_FALSE);
6425                 }
6426
6427                 if (((pool = uu_avl_pool_create("unmount_pool",
6428                     sizeof (unshare_unmount_node_t),
6429                     offsetof(unshare_unmount_node_t, un_avlnode),
6430                     unshare_unmount_compare, UU_DEFAULT)) == NULL) ||
6431                     ((tree = uu_avl_create(pool, NULL, UU_DEFAULT)) == NULL))
6432                         nomem();
6433
6434                 rewind(mnttab_file);
6435                 while (getmntent(mnttab_file, &entry) == 0) {
6436
6437                         /* ignore non-ZFS entries */
6438                         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0)
6439                                 continue;
6440
6441                         /* ignore snapshots */
6442                         if (strchr(entry.mnt_special, '@') != NULL)
6443                                 continue;
6444
6445                         if ((zhp = zfs_open(g_zfs, entry.mnt_special,
6446                             ZFS_TYPE_FILESYSTEM)) == NULL) {
6447                                 ret = 1;
6448                                 continue;
6449                         }
6450
6451                         switch (op) {
6452                         case OP_SHARE:
6453                                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
6454                                     nfs_mnt_prop,
6455                                     sizeof (nfs_mnt_prop),
6456                                     NULL, NULL, 0, B_FALSE) == 0);
6457                                 if (strcmp(nfs_mnt_prop, "off") != 0)
6458                                         break;
6459                                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
6460                                     nfs_mnt_prop,
6461                                     sizeof (nfs_mnt_prop),
6462                                     NULL, NULL, 0, B_FALSE) == 0);
6463                                 if (strcmp(nfs_mnt_prop, "off") == 0)
6464                                         continue;
6465                                 break;
6466                         case OP_MOUNT:
6467                                 /* Ignore legacy mounts */
6468                                 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT,
6469                                     nfs_mnt_prop,
6470                                     sizeof (nfs_mnt_prop),
6471                                     NULL, NULL, 0, B_FALSE) == 0);
6472                                 if (strcmp(nfs_mnt_prop, "legacy") == 0)
6473                                         continue;
6474                                 /* Ignore canmount=noauto mounts */
6475                                 if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) ==
6476                                     ZFS_CANMOUNT_NOAUTO)
6477                                         continue;
6478                         default:
6479                                 break;
6480                         }
6481
6482                         node = safe_malloc(sizeof (unshare_unmount_node_t));
6483                         node->un_zhp = zhp;
6484                         node->un_mountp = safe_strdup(entry.mnt_mountp);
6485
6486                         uu_avl_node_init(node, &node->un_avlnode, pool);
6487
6488                         if (uu_avl_find(tree, node, NULL, &idx) == NULL) {
6489                                 uu_avl_insert(tree, node, idx);
6490                         } else {
6491                                 zfs_close(node->un_zhp);
6492                                 free(node->un_mountp);
6493                                 free(node);
6494                         }
6495                 }
6496
6497                 /*
6498                  * Walk the AVL tree in reverse, unmounting each filesystem and
6499                  * removing it from the AVL tree in the process.
6500                  */
6501                 if ((walk = uu_avl_walk_start(tree,
6502                     UU_WALK_REVERSE | UU_WALK_ROBUST)) == NULL)
6503                         nomem();
6504
6505                 while ((node = uu_avl_walk_next(walk)) != NULL) {
6506                         uu_avl_remove(tree, node);
6507
6508                         switch (op) {
6509                         case OP_SHARE:
6510                                 if (zfs_unshareall_bypath(node->un_zhp,
6511                                     node->un_mountp) != 0)
6512                                         ret = 1;
6513                                 break;
6514
6515                         case OP_MOUNT:
6516                                 if (zfs_unmount(node->un_zhp,
6517                                     node->un_mountp, flags) != 0)
6518                                         ret = 1;
6519                                 break;
6520                         }
6521
6522                         zfs_close(node->un_zhp);
6523                         free(node->un_mountp);
6524                         free(node);
6525                 }
6526
6527                 uu_avl_walk_end(walk);
6528                 uu_avl_destroy(tree);
6529                 uu_avl_pool_destroy(pool);
6530
6531         } else {
6532                 if (argc != 1) {
6533                         if (argc == 0)
6534                                 (void) fprintf(stderr,
6535                                     gettext("missing filesystem argument\n"));
6536                         else
6537                                 (void) fprintf(stderr,
6538                                     gettext("too many arguments\n"));
6539                         usage(B_FALSE);
6540                 }
6541
6542                 /*
6543                  * We have an argument, but it may be a full path or a ZFS
6544                  * filesystem.  Pass full paths off to unmount_path() (shared by
6545                  * manual_unmount), otherwise open the filesystem and pass to
6546                  * zfs_unmount().
6547                  */
6548                 if (argv[0][0] == '/')
6549                         return (unshare_unmount_path(op, argv[0],
6550                             flags, B_FALSE));
6551
6552                 if ((zhp = zfs_open(g_zfs, argv[0],
6553                     ZFS_TYPE_FILESYSTEM)) == NULL)
6554                         return (1);
6555
6556                 verify(zfs_prop_get(zhp, op == OP_SHARE ?
6557                     ZFS_PROP_SHARENFS : ZFS_PROP_MOUNTPOINT,
6558                     nfs_mnt_prop, sizeof (nfs_mnt_prop), NULL,
6559                     NULL, 0, B_FALSE) == 0);
6560
6561                 switch (op) {
6562                 case OP_SHARE:
6563                         verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
6564                             nfs_mnt_prop,
6565                             sizeof (nfs_mnt_prop),
6566                             NULL, NULL, 0, B_FALSE) == 0);
6567                         verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
6568                             sharesmb, sizeof (sharesmb), NULL, NULL,
6569                             0, B_FALSE) == 0);
6570
6571                         if (strcmp(nfs_mnt_prop, "off") == 0 &&
6572                             strcmp(sharesmb, "off") == 0) {
6573                                 (void) fprintf(stderr, gettext("cannot "
6574                                     "unshare '%s': legacy share\n"),
6575                                     zfs_get_name(zhp));
6576 #ifdef illumos
6577                                 (void) fprintf(stderr, gettext("use "
6578                                     "unshare(1M) to unshare this "
6579                                     "filesystem\n"));
6580 #endif
6581                                 ret = 1;
6582                         } else if (!zfs_is_shared(zhp)) {
6583                                 (void) fprintf(stderr, gettext("cannot "
6584                                     "unshare '%s': not currently "
6585                                     "shared\n"), zfs_get_name(zhp));
6586                                 ret = 1;
6587                         } else if (zfs_unshareall(zhp) != 0) {
6588                                 ret = 1;
6589                         }
6590                         break;
6591
6592                 case OP_MOUNT:
6593                         if (strcmp(nfs_mnt_prop, "legacy") == 0) {
6594                                 (void) fprintf(stderr, gettext("cannot "
6595                                     "unmount '%s': legacy "
6596                                     "mountpoint\n"), zfs_get_name(zhp));
6597                                 (void) fprintf(stderr, gettext("use "
6598                                     "umount(8) to unmount this "
6599                                     "filesystem\n"));
6600                                 ret = 1;
6601                         } else if (!zfs_is_mounted(zhp, NULL)) {
6602                                 (void) fprintf(stderr, gettext("cannot "
6603                                     "unmount '%s': not currently "
6604                                     "mounted\n"),
6605                                     zfs_get_name(zhp));
6606                                 ret = 1;
6607                         } else if (zfs_unmountall(zhp, flags) != 0) {
6608                                 ret = 1;
6609                         }
6610                         break;
6611                 }
6612
6613                 zfs_close(zhp);
6614         }
6615
6616         return (ret);
6617 }
6618
6619 /*
6620  * zfs unmount -a
6621  * zfs unmount filesystem
6622  *
6623  * Unmount all filesystems, or a specific ZFS filesystem.
6624  */
6625 static int
6626 zfs_do_unmount(int argc, char **argv)
6627 {
6628         return (unshare_unmount(OP_MOUNT, argc, argv));
6629 }
6630
6631 /*
6632  * zfs unshare -a
6633  * zfs unshare filesystem
6634  *
6635  * Unshare all filesystems, or a specific ZFS filesystem.
6636  */
6637 static int
6638 zfs_do_unshare(int argc, char **argv)
6639 {
6640         return (unshare_unmount(OP_SHARE, argc, argv));
6641 }
6642
6643 /*
6644  * Attach/detach the given dataset to/from the given jail
6645  */
6646 /* ARGSUSED */
6647 static int
6648 do_jail(int argc, char **argv, int attach)
6649 {
6650         zfs_handle_t *zhp;
6651         int jailid, ret;
6652
6653         /* check number of arguments */
6654         if (argc < 3) {
6655                 (void) fprintf(stderr, gettext("missing argument(s)\n"));
6656                 usage(B_FALSE);
6657         }
6658         if (argc > 3) {
6659                 (void) fprintf(stderr, gettext("too many arguments\n"));
6660                 usage(B_FALSE);
6661         }
6662
6663         jailid = jail_getid(argv[1]);
6664         if (jailid < 0) {
6665                 (void) fprintf(stderr, gettext("invalid jail id or name\n"));
6666                 usage(B_FALSE);
6667         }
6668
6669         zhp = zfs_open(g_zfs, argv[2], ZFS_TYPE_FILESYSTEM);
6670         if (zhp == NULL)
6671                 return (1);
6672
6673         ret = (zfs_jail(zhp, jailid, attach) != 0);
6674
6675         zfs_close(zhp);
6676         return (ret);
6677 }
6678
6679 /*
6680  * zfs jail jailid filesystem
6681  *
6682  * Attach the given dataset to the given jail
6683  */
6684 /* ARGSUSED */
6685 static int
6686 zfs_do_jail(int argc, char **argv)
6687 {
6688
6689         return (do_jail(argc, argv, 1));
6690 }
6691
6692 /*
6693  * zfs unjail jailid filesystem
6694  *
6695  * Detach the given dataset from the given jail
6696  */
6697 /* ARGSUSED */
6698 static int
6699 zfs_do_unjail(int argc, char **argv)
6700 {
6701
6702         return (do_jail(argc, argv, 0));
6703 }
6704
6705 /*
6706  * Called when invoked as /etc/fs/zfs/mount.  Do the mount if the mountpoint is
6707  * 'legacy'.  Otherwise, complain that use should be using 'zfs mount'.
6708  */
6709 static int
6710 manual_mount(int argc, char **argv)
6711 {
6712         zfs_handle_t *zhp;
6713         char mountpoint[ZFS_MAXPROPLEN];
6714         char mntopts[MNT_LINE_MAX] = { '\0' };
6715         int ret = 0;
6716         int c;
6717         int flags = 0;
6718         char *dataset, *path;
6719
6720         /* check options */
6721         while ((c = getopt(argc, argv, ":mo:O")) != -1) {
6722                 switch (c) {
6723                 case 'o':
6724                         (void) strlcpy(mntopts, optarg, sizeof (mntopts));
6725                         break;
6726                 case 'O':
6727                         flags |= MS_OVERLAY;
6728                         break;
6729                 case 'm':
6730                         flags |= MS_NOMNTTAB;
6731                         break;
6732                 case ':':
6733                         (void) fprintf(stderr, gettext("missing argument for "
6734                             "'%c' option\n"), optopt);
6735                         usage(B_FALSE);
6736                         break;
6737                 case '?':
6738                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6739                             optopt);
6740                         (void) fprintf(stderr, gettext("usage: mount [-o opts] "
6741                             "<path>\n"));
6742                         return (2);
6743                 }
6744         }
6745
6746         argc -= optind;
6747         argv += optind;
6748
6749         /* check that we only have two arguments */
6750         if (argc != 2) {
6751                 if (argc == 0)
6752                         (void) fprintf(stderr, gettext("missing dataset "
6753                             "argument\n"));
6754                 else if (argc == 1)
6755                         (void) fprintf(stderr,
6756                             gettext("missing mountpoint argument\n"));
6757                 else
6758                         (void) fprintf(stderr, gettext("too many arguments\n"));
6759                 (void) fprintf(stderr, "usage: mount <dataset> <mountpoint>\n");
6760                 return (2);
6761         }
6762
6763         dataset = argv[0];
6764         path = argv[1];
6765
6766         /* try to open the dataset */
6767         if ((zhp = zfs_open(g_zfs, dataset, ZFS_TYPE_FILESYSTEM)) == NULL)
6768                 return (1);
6769
6770         (void) zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
6771             sizeof (mountpoint), NULL, NULL, 0, B_FALSE);
6772
6773         /* check for legacy mountpoint and complain appropriately */
6774         ret = 0;
6775         if (strcmp(mountpoint, ZFS_MOUNTPOINT_LEGACY) == 0) {
6776                 if (zmount(dataset, path, flags, MNTTYPE_ZFS,
6777                     NULL, 0, mntopts, sizeof (mntopts)) != 0) {
6778                         (void) fprintf(stderr, gettext("mount failed: %s\n"),
6779                             strerror(errno));
6780                         ret = 1;
6781                 }
6782         } else {
6783                 (void) fprintf(stderr, gettext("filesystem '%s' cannot be "
6784                     "mounted using 'mount -t zfs'\n"), dataset);
6785                 (void) fprintf(stderr, gettext("Use 'zfs set mountpoint=%s' "
6786                     "instead.\n"), path);
6787                 (void) fprintf(stderr, gettext("If you must use 'mount -t zfs' "
6788                     "or /etc/fstab, use 'zfs set mountpoint=legacy'.\n"));
6789                 (void) fprintf(stderr, gettext("See zfs(8) for more "
6790                     "information.\n"));
6791                 ret = 1;
6792         }
6793
6794         return (ret);
6795 }
6796
6797 /*
6798  * Called when invoked as /etc/fs/zfs/umount.  Unlike a manual mount, we allow
6799  * unmounts of non-legacy filesystems, as this is the dominant administrative
6800  * interface.
6801  */
6802 static int
6803 manual_unmount(int argc, char **argv)
6804 {
6805         int flags = 0;
6806         int c;
6807
6808         /* check options */
6809         while ((c = getopt(argc, argv, "f")) != -1) {
6810                 switch (c) {
6811                 case 'f':
6812                         flags = MS_FORCE;
6813                         break;
6814                 case '?':
6815                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6816                             optopt);
6817                         (void) fprintf(stderr, gettext("usage: unmount [-f] "
6818                             "<path>\n"));
6819                         return (2);
6820                 }
6821         }
6822
6823         argc -= optind;
6824         argv += optind;
6825
6826         /* check arguments */
6827         if (argc != 1) {
6828                 if (argc == 0)
6829                         (void) fprintf(stderr, gettext("missing path "
6830                             "argument\n"));
6831                 else
6832                         (void) fprintf(stderr, gettext("too many arguments\n"));
6833                 (void) fprintf(stderr, gettext("usage: unmount [-f] <path>\n"));
6834                 return (2);
6835         }
6836
6837         return (unshare_unmount_path(OP_MOUNT, argv[0], flags, B_TRUE));
6838 }
6839
6840 static int
6841 find_command_idx(char *command, int *idx)
6842 {
6843         int i;
6844
6845         for (i = 0; i < NCOMMAND; i++) {
6846                 if (command_table[i].name == NULL)
6847                         continue;
6848
6849                 if (strcmp(command, command_table[i].name) == 0) {
6850                         *idx = i;
6851                         return (0);
6852                 }
6853         }
6854         return (1);
6855 }
6856
6857 static int
6858 zfs_do_diff(int argc, char **argv)
6859 {
6860         zfs_handle_t *zhp;
6861         int flags = 0;
6862         char *tosnap = NULL;
6863         char *fromsnap = NULL;
6864         char *atp, *copy;
6865         int err = 0;
6866         int c;
6867
6868         while ((c = getopt(argc, argv, "FHt")) != -1) {
6869                 switch (c) {
6870                 case 'F':
6871                         flags |= ZFS_DIFF_CLASSIFY;
6872                         break;
6873                 case 'H':
6874                         flags |= ZFS_DIFF_PARSEABLE;
6875                         break;
6876                 case 't':
6877                         flags |= ZFS_DIFF_TIMESTAMP;
6878                         break;
6879                 default:
6880                         (void) fprintf(stderr,
6881                             gettext("invalid option '%c'\n"), optopt);
6882                         usage(B_FALSE);
6883                 }
6884         }
6885
6886         argc -= optind;
6887         argv += optind;
6888
6889         if (argc < 1) {
6890                 (void) fprintf(stderr,
6891                 gettext("must provide at least one snapshot name\n"));
6892                 usage(B_FALSE);
6893         }
6894
6895         if (argc > 2) {
6896                 (void) fprintf(stderr, gettext("too many arguments\n"));
6897                 usage(B_FALSE);
6898         }
6899
6900         fromsnap = argv[0];
6901         tosnap = (argc == 2) ? argv[1] : NULL;
6902
6903         copy = NULL;
6904         if (*fromsnap != '@')
6905                 copy = strdup(fromsnap);
6906         else if (tosnap)
6907                 copy = strdup(tosnap);
6908         if (copy == NULL)
6909                 usage(B_FALSE);
6910
6911         if (atp = strchr(copy, '@'))
6912                 *atp = '\0';
6913
6914         if ((zhp = zfs_open(g_zfs, copy, ZFS_TYPE_FILESYSTEM)) == NULL)
6915                 return (1);
6916
6917         free(copy);
6918
6919         /*
6920          * Ignore SIGPIPE so that the library can give us
6921          * information on any failure
6922          */
6923         (void) sigignore(SIGPIPE);
6924
6925         err = zfs_show_diffs(zhp, STDOUT_FILENO, fromsnap, tosnap, flags);
6926
6927         zfs_close(zhp);
6928
6929         return (err != 0);
6930 }
6931
6932 /*
6933  * zfs bookmark <fs@snap> <fs#bmark>
6934  *
6935  * Creates a bookmark with the given name from the given snapshot.
6936  */
6937 static int
6938 zfs_do_bookmark(int argc, char **argv)
6939 {
6940         char snapname[ZFS_MAXNAMELEN];
6941         zfs_handle_t *zhp;
6942         nvlist_t *nvl;
6943         int ret = 0;
6944         int c;
6945
6946         /* check options */
6947         while ((c = getopt(argc, argv, "")) != -1) {
6948                 switch (c) {
6949                 case '?':
6950                         (void) fprintf(stderr,
6951                             gettext("invalid option '%c'\n"), optopt);
6952                         goto usage;
6953                 }
6954         }
6955
6956         argc -= optind;
6957         argv += optind;
6958
6959         /* check number of arguments */
6960         if (argc < 1) {
6961                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
6962                 goto usage;
6963         }
6964         if (argc < 2) {
6965                 (void) fprintf(stderr, gettext("missing bookmark argument\n"));
6966                 goto usage;
6967         }
6968
6969         if (strchr(argv[1], '#') == NULL) {
6970                 (void) fprintf(stderr,
6971                     gettext("invalid bookmark name '%s' -- "
6972                     "must contain a '#'\n"), argv[1]);
6973                 goto usage;
6974         }
6975
6976         if (argv[0][0] == '@') {
6977                 /*
6978                  * Snapshot name begins with @.
6979                  * Default to same fs as bookmark.
6980                  */
6981                 (void) strncpy(snapname, argv[1], sizeof (snapname));
6982                 *strchr(snapname, '#') = '\0';
6983                 (void) strlcat(snapname, argv[0], sizeof (snapname));
6984         } else {
6985                 (void) strncpy(snapname, argv[0], sizeof (snapname));
6986         }
6987         zhp = zfs_open(g_zfs, snapname, ZFS_TYPE_SNAPSHOT);
6988         if (zhp == NULL)
6989                 goto usage;
6990         zfs_close(zhp);
6991
6992
6993         nvl = fnvlist_alloc();
6994         fnvlist_add_string(nvl, argv[1], snapname);
6995         ret = lzc_bookmark(nvl, NULL);
6996         fnvlist_free(nvl);
6997
6998         if (ret != 0) {
6999                 const char *err_msg;
7000                 char errbuf[1024];
7001
7002                 (void) snprintf(errbuf, sizeof (errbuf),
7003                     dgettext(TEXT_DOMAIN,
7004                     "cannot create bookmark '%s'"), argv[1]);
7005
7006                 switch (ret) {
7007                 case EXDEV:
7008                         err_msg = "bookmark is in a different pool";
7009                         break;
7010                 case EEXIST:
7011                         err_msg = "bookmark exists";
7012                         break;
7013                 case EINVAL:
7014                         err_msg = "invalid argument";
7015                         break;
7016                 case ENOTSUP:
7017                         err_msg = "bookmark feature not enabled";
7018                         break;
7019                 case ENOSPC:
7020                         err_msg = "out of space";
7021                         break;
7022                 default:
7023                         err_msg = "unknown error";
7024                         break;
7025                 }
7026                 (void) fprintf(stderr, "%s: %s\n", errbuf,
7027                     dgettext(TEXT_DOMAIN, err_msg));
7028         }
7029
7030         return (ret != 0);
7031
7032 usage:
7033         usage(B_FALSE);
7034         return (-1);
7035 }
7036
7037 int
7038 main(int argc, char **argv)
7039 {
7040         int ret = 0;
7041         int i;
7042         char *progname;
7043         char *cmdname;
7044
7045         (void) setlocale(LC_ALL, "");
7046         (void) textdomain(TEXT_DOMAIN);
7047
7048         opterr = 0;
7049
7050         if ((g_zfs = libzfs_init()) == NULL) {
7051                 (void) fprintf(stderr, gettext("internal error: failed to "
7052                     "initialize ZFS library\n"));
7053                 return (1);
7054         }
7055
7056         zfs_save_arguments(argc, argv, history_str, sizeof (history_str));
7057
7058         libzfs_print_on_error(g_zfs, B_TRUE);
7059
7060         if ((mnttab_file = fopen(MNTTAB, "r")) == NULL) {
7061                 (void) fprintf(stderr, gettext("internal error: unable to "
7062                     "open %s\n"), MNTTAB);
7063                 return (1);
7064         }
7065
7066         /*
7067          * This command also doubles as the /etc/fs mount and unmount program.
7068          * Determine if we should take this behavior based on argv[0].
7069          */
7070         progname = basename(argv[0]);
7071         if (strcmp(progname, "mount") == 0) {
7072                 ret = manual_mount(argc, argv);
7073         } else if (strcmp(progname, "umount") == 0) {
7074                 ret = manual_unmount(argc, argv);
7075         } else {
7076                 /*
7077                  * Make sure the user has specified some command.
7078                  */
7079                 if (argc < 2) {
7080                         (void) fprintf(stderr, gettext("missing command\n"));
7081                         usage(B_FALSE);
7082                 }
7083
7084                 cmdname = argv[1];
7085
7086                 /*
7087                  * The 'umount' command is an alias for 'unmount'
7088                  */
7089                 if (strcmp(cmdname, "umount") == 0)
7090                         cmdname = "unmount";
7091
7092                 /*
7093                  * The 'recv' command is an alias for 'receive'
7094                  */
7095                 if (strcmp(cmdname, "recv") == 0)
7096                         cmdname = "receive";
7097
7098                 /*
7099                  * The 'snap' command is an alias for 'snapshot'
7100                  */
7101                 if (strcmp(cmdname, "snap") == 0)
7102                         cmdname = "snapshot";
7103
7104                 /*
7105                  * Special case '-?'
7106                  */
7107                 if (strcmp(cmdname, "-?") == 0)
7108                         usage(B_TRUE);
7109
7110                 /*
7111                  * Run the appropriate command.
7112                  */
7113                 libzfs_mnttab_cache(g_zfs, B_TRUE);
7114                 if (find_command_idx(cmdname, &i) == 0) {
7115                         current_command = &command_table[i];
7116                         ret = command_table[i].func(argc - 1, argv + 1);
7117                 } else if (strchr(cmdname, '=') != NULL) {
7118                         verify(find_command_idx("set", &i) == 0);
7119                         current_command = &command_table[i];
7120                         ret = command_table[i].func(argc, argv);
7121                 } else {
7122                         (void) fprintf(stderr, gettext("unrecognized "
7123                             "command '%s'\n"), cmdname);
7124                         usage(B_FALSE);
7125                 }
7126                 libzfs_mnttab_cache(g_zfs, B_FALSE);
7127         }
7128
7129         (void) fclose(mnttab_file);
7130
7131         if (ret == 0 && log_history)
7132                 (void) zpool_log_history(g_zfs, history_str);
7133
7134         libzfs_fini(g_zfs);
7135
7136         /*
7137          * The 'ZFS_ABORT' environment variable causes us to dump core on exit
7138          * for the purposes of running ::findleaks.
7139          */
7140         if (getenv("ZFS_ABORT") != NULL) {
7141                 (void) printf("dumping core by request\n");
7142                 abort();
7143         }
7144
7145         return (ret);
7146 }