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