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, 2015 by Delphix. All rights reserved.
  25  * Copyright 2012 Milan Jurik. All rights reserved.
  26  * Copyright (c) 2012, Joyent, Inc. All rights reserved.
  27  * Copyright (c) 2011-2012 Pawel Jakub Dawidek <pawel@dawidek.net>.
  28  * All rights reserved.
  29  * Copyright (c) 2012 Martin Matuska <mm@FreeBSD.org>. All rights reserved.
  30  * Copyright (c) 2013 Steven Hartland.  All rights reserved.
  31  * Copyright 2013 Nexenta Systems, Inc.  All rights reserved.
  32  */
  33
  34 #include <assert.h>
  35 #include <ctype.h>
  36 #include <errno.h>
  37 #include <libgen.h>
  38 #include <libintl.h>
  39 #include <libuutil.h>
  40 #include <libnvpair.h>
  41 #include <locale.h>
  42 #include <stddef.h>
  43 #include <stdio.h>
  44 #include <stdlib.h>
  45 #include <strings.h>
  46 #include <unistd.h>
  47 #include <fcntl.h>
  48 #include <zone.h>
  49 #include <grp.h>
  50 #include <pwd.h>
  51 #include <signal.h>
  52 #include <sys/list.h>
  53 #include <sys/mntent.h>
  54 #include <sys/mnttab.h>
  55 #include <sys/mount.h>
  56 #include <sys/stat.h>
  57 #include <sys/fs/zfs.h>
  58 #include <sys/types.h>
  59 #include <time.h>
  60 #include <err.h>
  61 #include <jail.h>
  62
  63 #include <libzfs.h>
  64 #include <libzfs_core.h>
  65 #include <zfs_prop.h>
  66 #include <zfs_deleg.h>
  67 #include <libuutil.h>
  68 #ifdef sun
  69 #include <aclutils.h>
  70 #include <directory.h>
  71 #include <idmap.h>
  72 #endif
  73
  74 #include "zfs_iter.h"
  75 #include "zfs_util.h"
  76 #include "zfs_comutil.h"
  77
  78 libzfs_handle_t *g_zfs;
  79
  80 static FILE *mnttab_file;
  81 static char history_str[HIS_MAX_RECORD_LEN];
  82 static boolean_t log_history = B_TRUE;
  83
  84 static int zfs_do_clone(int argc, char **argv);
  85 static int zfs_do_create(int argc, char **argv);
  86 static int zfs_do_destroy(int argc, char **argv);
  87 static int zfs_do_get(int argc, char **argv);
  88 static int zfs_do_inherit(int argc, char **argv);
  89 static int zfs_do_list(int argc, char **argv);
  90 static int zfs_do_mount(int argc, char **argv);
  91 static int zfs_do_rename(int argc, char **argv);
  92 static int zfs_do_rollback(int argc, char **argv);
  93 static int zfs_do_set(int argc, char **argv);
  94 static int zfs_do_upgrade(int argc, char **argv);
  95 static int zfs_do_snapshot(int argc, char **argv);
  96 static int zfs_do_unmount(int argc, char **argv);
  97 static int zfs_do_share(int argc, char **argv);
  98 static int zfs_do_unshare(int argc, char **argv);
  99 static int zfs_do_send(int argc, char **argv);
 100 static int zfs_do_receive(int argc, char **argv);
 101 static int zfs_do_promote(int argc, char **argv);
 102 static int zfs_do_userspace(int argc, char **argv);
 103 static int zfs_do_allow(int argc, char **argv);
 104 static int zfs_do_unallow(int argc, char **argv);
 105 static int zfs_do_hold(int argc, char **argv);
 106 static int zfs_do_holds(int argc, char **argv);
 107 static int zfs_do_release(int argc, char **argv);
 108 static int zfs_do_diff(int argc, char **argv);
 109 static int zfs_do_jail(int argc, char **argv);
 110 static int zfs_do_unjail(int argc, char **argv);
 111 static int zfs_do_bookmark(int argc, char **argv);
 112
 113 /*
 114  * Enable a reasonable set of defaults for libumem debugging on DEBUG builds.
 115  */
 116
 117 #ifdef DEBUG
 118 const char *
 119 _umem_debug_init(void)
 120 {
 121         return ("default,verbose"); /* $UMEM_DEBUG setting */
 122 }
 123
 124 const char *
 125 _umem_logging_init(void)
 126 {
 127         return ("fail,contents"); /* $UMEM_LOGGING setting */
 128 }
 129 #endif
 130
 131 typedef enum {
 132         HELP_CLONE,
 133         HELP_CREATE,
 134         HELP_DESTROY,
 135         HELP_GET,
 136         HELP_INHERIT,
 137         HELP_UPGRADE,
 138         HELP_JAIL,
 139         HELP_UNJAIL,
 140         HELP_LIST,
 141         HELP_MOUNT,
 142         HELP_PROMOTE,
 143         HELP_RECEIVE,
 144         HELP_RENAME,
 145         HELP_ROLLBACK,
 146         HELP_SEND,
 147         HELP_SET,
 148         HELP_SHARE,
 149         HELP_SNAPSHOT,
 150         HELP_UNMOUNT,
 151         HELP_UNSHARE,
 152         HELP_ALLOW,
 153         HELP_UNALLOW,
 154         HELP_USERSPACE,
 155         HELP_GROUPSPACE,
 156         HELP_HOLD,
 157         HELP_HOLDS,
 158         HELP_RELEASE,
 159         HELP_DIFF,
 160         HELP_BOOKMARK,
 161 } zfs_help_t;
 162
 163 typedef struct zfs_command {
 164         const char      *name;
 165         int             (*func)(int argc, char **argv);
 166         zfs_help_t      usage;
 167 } zfs_command_t;
 168
 169 /*
 170  * Master command table.  Each ZFS command has a name, associated function, and
 171  * usage message.  The usage messages need to be internationalized, so we have
 172  * to have a function to return the usage message based on a command index.
 173  *
 174  * These commands are organized according to how they are displayed in the usage
 175  * message.  An empty command (one with a NULL name) indicates an empty line in
 176  * the generic usage message.
 177  */
 178 static zfs_command_t command_table[] = {
 179         { "create",     zfs_do_create,          HELP_CREATE             },
 180         { "destroy",    zfs_do_destroy,         HELP_DESTROY            },
 181         { NULL },
 182         { "snapshot",   zfs_do_snapshot,        HELP_SNAPSHOT           },
 183         { "rollback",   zfs_do_rollback,        HELP_ROLLBACK           },
 184         { "clone",      zfs_do_clone,           HELP_CLONE              },
 185         { "promote",    zfs_do_promote,         HELP_PROMOTE            },
 186         { "rename",     zfs_do_rename,          HELP_RENAME             },
 187         { "bookmark",   zfs_do_bookmark,        HELP_BOOKMARK           },
 188         { NULL },
 189         { "list",       zfs_do_list,            HELP_LIST               },
 190         { NULL },
 191         { "set",        zfs_do_set,             HELP_SET                },
 192         { "get",        zfs_do_get,             HELP_GET                },
 193         { "inherit",    zfs_do_inherit,         HELP_INHERIT            },
 194         { "upgrade",    zfs_do_upgrade,         HELP_UPGRADE            },
 195         { "userspace",  zfs_do_userspace,       HELP_USERSPACE          },
 196         { "groupspace", zfs_do_userspace,       HELP_GROUPSPACE         },
 197         { NULL },
 198         { "mount",      zfs_do_mount,           HELP_MOUNT              },
 199         { "unmount",    zfs_do_unmount,         HELP_UNMOUNT            },
 200         { "share",      zfs_do_share,           HELP_SHARE              },
 201         { "unshare",    zfs_do_unshare,         HELP_UNSHARE            },
 202         { NULL },
 203         { "send",       zfs_do_send,            HELP_SEND               },
 204         { "receive",    zfs_do_receive,         HELP_RECEIVE            },
 205         { NULL },
 206         { "allow",      zfs_do_allow,           HELP_ALLOW              },
 207         { NULL },
 208         { "unallow",    zfs_do_unallow,         HELP_UNALLOW            },
 209         { NULL },
 210         { "hold",       zfs_do_hold,            HELP_HOLD               },
 211         { "holds",      zfs_do_holds,           HELP_HOLDS              },
 212         { "release",    zfs_do_release,         HELP_RELEASE            },
 213         { "diff",       zfs_do_diff,            HELP_DIFF               },
 214         { NULL },
 215         { "jail",       zfs_do_jail,            HELP_JAIL               },
 216         { "unjail",     zfs_do_unjail,          HELP_UNJAIL             },
 217 };
 218
 219 #define NCOMMAND        (sizeof (command_table) / sizeof (command_table[0]))
 220
 221 zfs_command_t *current_command;
 222
 223 static const char *
 224 get_usage(zfs_help_t idx)
 225 {
 226         switch (idx) {
 227         case HELP_CLONE:
 228                 return (gettext("\tclone [-p] [-o property=value] ... "
 229                     "<snapshot> <filesystem|volume>\n"));
 230         case HELP_CREATE:
 231                 return (gettext("\tcreate [-pu] [-o property=value] ... "
 232                     "<filesystem>\n"
 233                     "\tcreate [-ps] [-b blocksize] [-o property=value] ... "
 234                     "-V <size> <volume>\n"));
 235         case HELP_DESTROY:
 236                 return (gettext("\tdestroy [-fnpRrv] <filesystem|volume>\n"
 237                     "\tdestroy [-dnpRrv] "
 238                     "<filesystem|volume>@<snap>[%<snap>][,...]\n"
 239                     "\tdestroy <filesystem|volume>#<bookmark>\n"));
 240         case HELP_GET:
 241                 return (gettext("\tget [-rHp] [-d max] "
 242                     "[-o \"all\" | field[,...]]\n"
 243                     "\t    [-t type[,...]] [-s source[,...]]\n"
 244                     "\t    <\"all\" | property[,...]> "
 245                     "[filesystem|volume|snapshot] ...\n"));
 246         case HELP_INHERIT:
 247                 return (gettext("\tinherit [-rS] <property> "
 248                     "<filesystem|volume|snapshot> ...\n"));
 249         case HELP_UPGRADE:
 250                 return (gettext("\tupgrade [-v]\n"
 251                     "\tupgrade [-r] [-V version] <-a | filesystem ...>\n"));
 252         case HELP_JAIL:
 253                 return (gettext("\tjail <jailid|jailname> <filesystem>\n"));
 254         case HELP_UNJAIL:
 255                 return (gettext("\tunjail <jailid|jailname> <filesystem>\n"));
 256         case HELP_LIST:
 257                 return (gettext("\tlist [-Hp] [-r|-d max] [-o property[,...]] "
 258                     "[-s property]...\n\t    [-S property]... [-t type[,...]] "
 259                     "[filesystem|volume|snapshot] ...\n"));
 260         case HELP_MOUNT:
 261                 return (gettext("\tmount\n"
 262                     "\tmount [-vO] [-o opts] <-a | filesystem>\n"));
 263         case HELP_PROMOTE:
 264                 return (gettext("\tpromote <clone-filesystem>\n"));
 265         case HELP_RECEIVE:
 266                 return (gettext("\treceive|recv [-vnsFu] <filesystem|volume|"
 267                     "snapshot>\n"
 268                     "\treceive|recv [-vnsFu] [-o origin=<snapshot>] [-d | -e] "
 269                     "<filesystem>\n"
 270                     "\treceive|recv -A <filesystem|volume>\n"));
 271         case HELP_RENAME:
 272                 return (gettext("\trename [-f] <filesystem|volume|snapshot> "
 273                     "<filesystem|volume|snapshot>\n"
 274                     "\trename [-f] -p <filesystem|volume> <filesystem|volume>\n"
 275                     "\trename -r <snapshot> <snapshot>\n"
 276                     "\trename -u [-p] <filesystem> <filesystem>"));
 277         case HELP_ROLLBACK:
 278                 return (gettext("\trollback [-rRf] <snapshot>\n"));
 279         case HELP_SEND:
 280                 return (gettext("\tsend [-DnPpRvLe] [-[iI] snapshot] "
 281                     "<snapshot>\n"
 282                     "\tsend [-Le] [-i snapshot|bookmark] "
 283                     "<filesystem|volume|snapshot>\n"
 284                     "\tsend [-nvPe] -t <receive_resume_token>\n"));
 285         case HELP_SET:
 286                 return (gettext("\tset <property=value> ... "
 287                     "<filesystem|volume|snapshot> ...\n"));
 288         case HELP_SHARE:
 289                 return (gettext("\tshare <-a | filesystem>\n"));
 290         case HELP_SNAPSHOT:
 291                 return (gettext("\tsnapshot|snap [-r] [-o property=value] ... "
 292                     "<filesystem|volume>@<snap> ...\n"));
 293         case HELP_UNMOUNT:
 294                 return (gettext("\tunmount|umount [-f] "
 295                     "<-a | filesystem|mountpoint>\n"));
 296         case HELP_UNSHARE:
 297                 return (gettext("\tunshare "
 298                     "<-a | filesystem|mountpoint>\n"));
 299         case HELP_ALLOW:
 300                 return (gettext("\tallow <filesystem|volume>\n"
 301                     "\tallow [-ldug] "
 302                     "<\"everyone\"|user|group>[,...] <perm|@setname>[,...]\n"
 303                     "\t    <filesystem|volume>\n"
 304                     "\tallow [-ld] -e <perm|@setname>[,...] "
 305                     "<filesystem|volume>\n"
 306                     "\tallow -c <perm|@setname>[,...] <filesystem|volume>\n"
 307                     "\tallow -s @setname <perm|@setname>[,...] "
 308                     "<filesystem|volume>\n"));
 309         case HELP_UNALLOW:
 310                 return (gettext("\tunallow [-rldug] "
 311                     "<\"everyone\"|user|group>[,...]\n"
 312                     "\t    [<perm|@setname>[,...]] <filesystem|volume>\n"
 313                     "\tunallow [-rld] -e [<perm|@setname>[,...]] "
 314                     "<filesystem|volume>\n"
 315                     "\tunallow [-r] -c [<perm|@setname>[,...]] "
 316                     "<filesystem|volume>\n"
 317                     "\tunallow [-r] -s @setname [<perm|@setname>[,...]] "
 318                     "<filesystem|volume>\n"));
 319         case HELP_USERSPACE:
 320                 return (gettext("\tuserspace [-Hinp] [-o field[,...]] "
 321                     "[-s field] ...\n"
 322                     "\t    [-S field] ... [-t type[,...]] "
 323                     "<filesystem|snapshot>\n"));
 324         case HELP_GROUPSPACE:
 325                 return (gettext("\tgroupspace [-Hinp] [-o field[,...]] "
 326                     "[-s field] ...\n"
 327                     "\t    [-S field] ... [-t type[,...]] "
 328                     "<filesystem|snapshot>\n"));
 329         case HELP_HOLD:
 330                 return (gettext("\thold [-r] <tag> <snapshot> ...\n"));
 331         case HELP_HOLDS:
 332                 return (gettext("\tholds [-r] <snapshot> ...\n"));
 333         case HELP_RELEASE:
 334                 return (gettext("\trelease [-r] <tag> <snapshot> ...\n"));
 335         case HELP_DIFF:
 336                 return (gettext("\tdiff [-FHt] <snapshot> "
 337                     "[snapshot|filesystem]\n"));
 338         case HELP_BOOKMARK:
 339                 return (gettext("\tbookmark <snapshot> <bookmark>\n"));
 340         }
 341
 342         abort();
 343         /* NOTREACHED */
 344 }
 345
 346 void
 347 nomem(void)
 348 {
 349         (void) fprintf(stderr, gettext("internal error: out of memory\n"));
 350         exit(1);
 351 }
 352
 353 /*
 354  * Utility function to guarantee malloc() success.
 355  */
 356
 357 void *
 358 safe_malloc(size_t size)
 359 {
 360         void *data;
 361
 362         if ((data = calloc(1, size)) == NULL)
 363                 nomem();
 364
 365         return (data);
 366 }
 367
 368 static char *
 369 safe_strdup(char *str)
 370 {
 371         char *dupstr = strdup(str);
 372
 373         if (dupstr == NULL)
 374                 nomem();
 375
 376         return (dupstr);
 377 }
 378
 379 /*
 380  * Callback routine that will print out information for each of
 381  * the properties.
 382  */
 383 static int
 384 usage_prop_cb(int prop, void *cb)
 385 {
 386         FILE *fp = cb;
 387
 388         (void) fprintf(fp, "\t%-15s ", zfs_prop_to_name(prop));
 389
 390         if (zfs_prop_readonly(prop))
 391                 (void) fprintf(fp, " NO    ");
 392         else
 393                 (void) fprintf(fp, "YES    ");
 394
 395         if (zfs_prop_inheritable(prop))
 396                 (void) fprintf(fp, "  YES   ");
 397         else
 398                 (void) fprintf(fp, "   NO   ");
 399
 400         if (zfs_prop_values(prop) == NULL)
 401                 (void) fprintf(fp, "-\n");
 402         else
 403                 (void) fprintf(fp, "%s\n", zfs_prop_values(prop));
 404
 405         return (ZPROP_CONT);
 406 }
 407
 408 /*
 409  * Display usage message.  If we're inside a command, display only the usage for
 410  * that command.  Otherwise, iterate over the entire command table and display
 411  * a complete usage message.
 412  */
 413 static void
 414 usage(boolean_t requested)
 415 {
 416         int i;
 417         boolean_t show_properties = B_FALSE;
 418         FILE *fp = requested ? stdout : stderr;
 419
 420         if (current_command == NULL) {
 421
 422                 (void) fprintf(fp, gettext("usage: zfs command args ...\n"));
 423                 (void) fprintf(fp,
 424                     gettext("where 'command' is one of the following:\n\n"));
 425
 426                 for (i = 0; i < NCOMMAND; i++) {
 427                         if (command_table[i].name == NULL)
 428                                 (void) fprintf(fp, "\n");
 429                         else
 430                                 (void) fprintf(fp, "%s",
 431                                     get_usage(command_table[i].usage));
 432                 }
 433
 434                 (void) fprintf(fp, gettext("\nEach dataset is of the form: "
 435                     "pool/[dataset/]*dataset[@name]\n"));
 436         } else {
 437                 (void) fprintf(fp, gettext("usage:\n"));
 438                 (void) fprintf(fp, "%s", get_usage(current_command->usage));
 439         }
 440
 441         if (current_command != NULL &&
 442             (strcmp(current_command->name, "set") == 0 ||
 443             strcmp(current_command->name, "get") == 0 ||
 444             strcmp(current_command->name, "inherit") == 0 ||
 445             strcmp(current_command->name, "list") == 0))
 446                 show_properties = B_TRUE;
 447
 448         if (show_properties) {
 449                 (void) fprintf(fp,
 450                     gettext("\nThe following properties are supported:\n"));
 451
 452                 (void) fprintf(fp, "\n\t%-14s %s  %s   %s\n\n",
 453                     "PROPERTY", "EDIT", "INHERIT", "VALUES");
 454
 455                 /* Iterate over all properties */
 456                 (void) zprop_iter(usage_prop_cb, fp, B_FALSE, B_TRUE,
 457                     ZFS_TYPE_DATASET);
 458
 459                 (void) fprintf(fp, "\t%-15s ", "userused@...");
 460                 (void) fprintf(fp, " NO       NO   <size>\n");
 461                 (void) fprintf(fp, "\t%-15s ", "groupused@...");
 462                 (void) fprintf(fp, " NO       NO   <size>\n");
 463                 (void) fprintf(fp, "\t%-15s ", "userquota@...");
 464                 (void) fprintf(fp, "YES       NO   <size> | none\n");
 465                 (void) fprintf(fp, "\t%-15s ", "groupquota@...");
 466                 (void) fprintf(fp, "YES       NO   <size> | none\n");
 467                 (void) fprintf(fp, "\t%-15s ", "written@<snap>");
 468                 (void) fprintf(fp, " NO       NO   <size>\n");
 469
 470                 (void) fprintf(fp, gettext("\nSizes are specified in bytes "
 471                     "with standard units such as K, M, G, etc.\n"));
 472                 (void) fprintf(fp, gettext("\nUser-defined properties can "
 473                     "be specified by using a name containing a colon (:).\n"));
 474                 (void) fprintf(fp, gettext("\nThe {user|group}{used|quota}@ "
 475                     "properties must be appended with\n"
 476                     "a user or group specifier of one of these forms:\n"
 477                     "    POSIX name      (eg: \"matt\")\n"
 478                     "    POSIX id        (eg: \"126829\")\n"
 479                     "    SMB name@domain (eg: \"matt@sun\")\n"
 480                     "    SMB SID         (eg: \"S-1-234-567-89\")\n"));
 481         } else {
 482                 (void) fprintf(fp,
 483                     gettext("\nFor the property list, run: %s\n"),
 484                     "zfs set|get");
 485                 (void) fprintf(fp,
 486                     gettext("\nFor the delegated permission list, run: %s\n"),
 487                     "zfs allow|unallow");
 488         }
 489
 490         /*
 491          * See comments at end of main().
 492          */
 493         if (getenv("ZFS_ABORT") != NULL) {
 494                 (void) printf("dumping core by request\n");
 495                 abort();
 496         }
 497
 498         exit(requested ? 0 : 2);
 499 }
 500
 501 /*
 502  * Take a property=value argument string and add it to the given nvlist.
 503  * Modifies the argument inplace.
 504  */
 505 static int
 506 parseprop(nvlist_t *props, char *propname)
 507 {
 508         char *propval, *strval;
 509
 510         if ((propval = strchr(propname, '=')) == NULL) {
 511                 (void) fprintf(stderr, gettext("missing "
 512                     "'=' for property=value argument\n"));
 513                 return (-1);
 514         }
 515         *propval = '\0';
 516         propval++;
 517         if (nvlist_lookup_string(props, propname, &strval) == 0) {
 518                 (void) fprintf(stderr, gettext("property '%s' "
 519                     "specified multiple times\n"), propname);
 520                 return (-1);
 521         }
 522         if (nvlist_add_string(props, propname, propval) != 0)
 523                 nomem();
 524         return (0);
 525 }
 526
 527 static int
 528 parse_depth(char *opt, int *flags)
 529 {
 530         char *tmp;
 531         int depth;
 532
 533         depth = (int)strtol(opt, &tmp, 0);
 534         if (*tmp) {
 535                 (void) fprintf(stderr,
 536                     gettext("%s is not an integer\n"), opt);
 537                 usage(B_FALSE);
 538         }
 539         if (depth < 0) {
 540                 (void) fprintf(stderr,
 541                     gettext("Depth can not be negative.\n"));
 542                 usage(B_FALSE);
 543         }
 544         *flags |= (ZFS_ITER_DEPTH_LIMIT|ZFS_ITER_RECURSE);
 545         return (depth);
 546 }
 547
 548 #define PROGRESS_DELAY 2                /* seconds */
 549
 550 static char *pt_reverse = "\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b";
 551 static time_t pt_begin;
 552 static char *pt_header = NULL;
 553 static boolean_t pt_shown;
 554
 555 static void
 556 start_progress_timer(void)
 557 {
 558         pt_begin = time(NULL) + PROGRESS_DELAY;
 559         pt_shown = B_FALSE;
 560 }
 561
 562 static void
 563 set_progress_header(char *header)
 564 {
 565         assert(pt_header == NULL);
 566         pt_header = safe_strdup(header);
 567         if (pt_shown) {
 568                 (void) printf("%s: ", header);
 569                 (void) fflush(stdout);
 570         }
 571 }
 572
 573 static void
 574 update_progress(char *update)
 575 {
 576         if (!pt_shown && time(NULL) > pt_begin) {
 577                 int len = strlen(update);
 578
 579                 (void) printf("%s: %s%*.*s", pt_header, update, len, len,
 580                     pt_reverse);
 581                 (void) fflush(stdout);
 582                 pt_shown = B_TRUE;
 583         } else if (pt_shown) {
 584                 int len = strlen(update);
 585
 586                 (void) printf("%s%*.*s", update, len, len, pt_reverse);
 587                 (void) fflush(stdout);
 588         }
 589 }
 590
 591 static void
 592 finish_progress(char *done)
 593 {
 594         if (pt_shown) {
 595                 (void) printf("%s\n", done);
 596                 (void) fflush(stdout);
 597         }
 598         free(pt_header);
 599         pt_header = NULL;
 600 }
 601
 602 /*
 603  * Check if the dataset is mountable and should be automatically mounted.
 604  */
 605 static boolean_t
 606 should_auto_mount(zfs_handle_t *zhp)
 607 {
 608         if (!zfs_prop_valid_for_type(ZFS_PROP_CANMOUNT, zfs_get_type(zhp)))
 609                 return (B_FALSE);
 610         return (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) == ZFS_CANMOUNT_ON);
 611 }
 612
 613 /*
 614  * zfs clone [-p] [-o prop=value] ... <snap> <fs | vol>
 615  *
 616  * Given an existing dataset, create a writable copy whose initial contents
 617  * are the same as the source.  The newly created dataset maintains a
 618  * dependency on the original; the original cannot be destroyed so long as
 619  * the clone exists.
 620  *
 621  * The '-p' flag creates all the non-existing ancestors of the target first.
 622  */
 623 static int
 624 zfs_do_clone(int argc, char **argv)
 625 {
 626         zfs_handle_t *zhp = NULL;
 627         boolean_t parents = B_FALSE;
 628         nvlist_t *props;
 629         int ret = 0;
 630         int c;
 631
 632         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
 633                 nomem();
 634
 635         /* check options */
 636         while ((c = getopt(argc, argv, "o:p")) != -1) {
 637                 switch (c) {
 638                 case 'o':
 639                         if (parseprop(props, optarg) != 0)
 640                                 return (1);
 641                         break;
 642                 case 'p':
 643                         parents = B_TRUE;
 644                         break;
 645                 case '?':
 646                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
 647                             optopt);
 648                         goto usage;
 649                 }
 650         }
 651
 652         argc -= optind;
 653         argv += optind;
 654
 655         /* check number of arguments */
 656         if (argc < 1) {
 657                 (void) fprintf(stderr, gettext("missing source dataset "
 658                     "argument\n"));
 659                 goto usage;
 660         }
 661         if (argc < 2) {
 662                 (void) fprintf(stderr, gettext("missing target dataset "
 663                     "argument\n"));
 664                 goto usage;
 665         }
 666         if (argc > 2) {
 667                 (void) fprintf(stderr, gettext("too many arguments\n"));
 668                 goto usage;
 669         }
 670
 671         /* open the source dataset */
 672         if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
 673                 return (1);
 674
 675         if (parents && zfs_name_valid(argv[1], ZFS_TYPE_FILESYSTEM |
 676             ZFS_TYPE_VOLUME)) {
 677                 /*
 678                  * Now create the ancestors of the target dataset.  If the
 679                  * target already exists and '-p' option was used we should not
 680                  * complain.
 681                  */
 682                 if (zfs_dataset_exists(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM |
 683                     ZFS_TYPE_VOLUME))
 684                         return (0);
 685                 if (zfs_create_ancestors(g_zfs, argv[1]) != 0)
 686                         return (1);
 687         }
 688
 689         /* pass to libzfs */
 690         ret = zfs_clone(zhp, argv[1], props);
 691
 692         /* create the mountpoint if necessary */
 693         if (ret == 0) {
 694                 zfs_handle_t *clone;
 695
 696                 clone = zfs_open(g_zfs, argv[1], ZFS_TYPE_DATASET);
 697                 if (clone != NULL) {
 698                         /*
 699                          * If the user doesn't want the dataset
 700                          * automatically mounted, then skip the mount/share
 701                          * step.
 702                          */
 703                         if (should_auto_mount(clone)) {
 704                                 if ((ret = zfs_mount(clone, NULL, 0)) != 0) {
 705                                         (void) fprintf(stderr, gettext("clone "
 706                                             "successfully created, "
 707                                             "but not mounted\n"));
 708                                 } else if ((ret = zfs_share(clone)) != 0) {
 709                                         (void) fprintf(stderr, gettext("clone "
 710                                             "successfully created, "
 711                                             "but not shared\n"));
 712                                 }
 713                         }
 714                         zfs_close(clone);
 715                 }
 716         }
 717
 718         zfs_close(zhp);
 719         nvlist_free(props);
 720
 721         return (!!ret);
 722
 723 usage:
 724         if (zhp)
 725                 zfs_close(zhp);
 726         nvlist_free(props);
 727         usage(B_FALSE);
 728         return (-1);
 729 }
 730
 731 /*
 732  * zfs create [-pu] [-o prop=value] ... fs
 733  * zfs create [-ps] [-b blocksize] [-o prop=value] ... -V vol size
 734  *
 735  * Create a new dataset.  This command can be used to create filesystems
 736  * and volumes.  Snapshot creation is handled by 'zfs snapshot'.
 737  * For volumes, the user must specify a size to be used.
 738  *
 739  * The '-s' flag applies only to volumes, and indicates that we should not try
 740  * to set the reservation for this volume.  By default we set a reservation
 741  * equal to the size for any volume.  For pools with SPA_VERSION >=
 742  * SPA_VERSION_REFRESERVATION, we set a refreservation instead.
 743  *
 744  * The '-p' flag creates all the non-existing ancestors of the target first.
 745  *
 746  * The '-u' flag prevents mounting of newly created file system.
 747  */
 748 static int
 749 zfs_do_create(int argc, char **argv)
 750 {
 751         zfs_type_t type = ZFS_TYPE_FILESYSTEM;
 752         zfs_handle_t *zhp = NULL;
 753         uint64_t volsize;
 754         int c;
 755         boolean_t noreserve = B_FALSE;
 756         boolean_t bflag = B_FALSE;
 757         boolean_t parents = B_FALSE;
 758         boolean_t nomount = B_FALSE;
 759         int ret = 1;
 760         nvlist_t *props;
 761         uint64_t intval;
 762
 763         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
 764                 nomem();
 765
 766         /* check options */
 767         while ((c = getopt(argc, argv, ":V:b:so:pu")) != -1) {
 768                 switch (c) {
 769                 case 'V':
 770                         type = ZFS_TYPE_VOLUME;
 771                         if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
 772                                 (void) fprintf(stderr, gettext("bad volume "
 773                                     "size '%s': %s\n"), optarg,
 774                                     libzfs_error_description(g_zfs));
 775                                 goto error;
 776                         }
 777
 778                         if (nvlist_add_uint64(props,
 779                             zfs_prop_to_name(ZFS_PROP_VOLSIZE), intval) != 0)
 780                                 nomem();
 781                         volsize = intval;
 782                         break;
 783                 case 'p':
 784                         parents = B_TRUE;
 785                         break;
 786                 case 'b':
 787                         bflag = B_TRUE;
 788                         if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
 789                                 (void) fprintf(stderr, gettext("bad volume "
 790                                     "block size '%s': %s\n"), optarg,
 791                                     libzfs_error_description(g_zfs));
 792                                 goto error;
 793                         }
 794
 795                         if (nvlist_add_uint64(props,
 796                             zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
 797                             intval) != 0)
 798                                 nomem();
 799                         break;
 800                 case 'o':
 801                         if (parseprop(props, optarg) != 0)
 802                                 goto error;
 803                         break;
 804                 case 's':
 805                         noreserve = B_TRUE;
 806                         break;
 807                 case 'u':
 808                         nomount = B_TRUE;
 809                         break;
 810                 case ':':
 811                         (void) fprintf(stderr, gettext("missing size "
 812                             "argument\n"));
 813                         goto badusage;
 814                 case '?':
 815                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
 816                             optopt);
 817                         goto badusage;
 818                 }
 819         }
 820
 821         if ((bflag || noreserve) && type != ZFS_TYPE_VOLUME) {
 822                 (void) fprintf(stderr, gettext("'-s' and '-b' can only be "
 823                     "used when creating a volume\n"));
 824                 goto badusage;
 825         }
 826         if (nomount && type != ZFS_TYPE_FILESYSTEM) {
 827                 (void) fprintf(stderr, gettext("'-u' can only be "
 828                     "used when creating a file system\n"));
 829                 goto badusage;
 830         }
 831
 832         argc -= optind;
 833         argv += optind;
 834
 835         /* check number of arguments */
 836         if (argc == 0) {
 837                 (void) fprintf(stderr, gettext("missing %s argument\n"),
 838                     zfs_type_to_name(type));
 839                 goto badusage;
 840         }
 841         if (argc > 1) {
 842                 (void) fprintf(stderr, gettext("too many arguments\n"));
 843                 goto badusage;
 844         }
 845
 846         if (type == ZFS_TYPE_VOLUME && !noreserve) {
 847                 zpool_handle_t *zpool_handle;
 848                 nvlist_t *real_props;
 849                 uint64_t spa_version;
 850                 char *p;
 851                 zfs_prop_t resv_prop;
 852                 char *strval;
 853                 char msg[1024];
 854
 855                 if (p = strchr(argv[0], '/'))
 856                         *p = '\0';
 857                 zpool_handle = zpool_open(g_zfs, argv[0]);
 858                 if (p != NULL)
 859                         *p = '/';
 860                 if (zpool_handle == NULL)
 861                         goto error;
 862                 spa_version = zpool_get_prop_int(zpool_handle,
 863                     ZPOOL_PROP_VERSION, NULL);
 864                 if (spa_version >= SPA_VERSION_REFRESERVATION)
 865                         resv_prop = ZFS_PROP_REFRESERVATION;
 866                 else
 867                         resv_prop = ZFS_PROP_RESERVATION;
 868
 869                 (void) snprintf(msg, sizeof (msg),
 870                     gettext("cannot create '%s'"), argv[0]);
 871                 if (props && (real_props = zfs_valid_proplist(g_zfs, type,
 872                     props, 0, NULL, zpool_handle, msg)) == NULL) {
 873                         zpool_close(zpool_handle);
 874                         goto error;
 875                 }
 876                 zpool_close(zpool_handle);
 877
 878                 volsize = zvol_volsize_to_reservation(volsize, real_props);
 879                 nvlist_free(real_props);
 880
 881                 if (nvlist_lookup_string(props, zfs_prop_to_name(resv_prop),
 882                     &strval) != 0) {
 883                         if (nvlist_add_uint64(props,
 884                             zfs_prop_to_name(resv_prop), volsize) != 0) {
 885                                 nvlist_free(props);
 886                                 nomem();
 887                         }
 888                 }
 889         }
 890
 891         if (parents && zfs_name_valid(argv[0], type)) {
 892                 /*
 893                  * Now create the ancestors of target dataset.  If the target
 894                  * already exists and '-p' option was used we should not
 895                  * complain.
 896                  */
 897                 if (zfs_dataset_exists(g_zfs, argv[0], type)) {
 898                         ret = 0;
 899                         goto error;
 900                 }
 901                 if (zfs_create_ancestors(g_zfs, argv[0]) != 0)
 902                         goto error;
 903         }
 904
 905         /* pass to libzfs */
 906         if (zfs_create(g_zfs, argv[0], type, props) != 0)
 907                 goto error;
 908
 909         if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL)
 910                 goto error;
 911
 912         ret = 0;
 913
 914         /*
 915          * Mount and/or share the new filesystem as appropriate.  We provide a
 916          * verbose error message to let the user know that their filesystem was
 917          * in fact created, even if we failed to mount or share it.
 918          * If the user doesn't want the dataset automatically mounted,
 919          * then skip the mount/share step altogether.
 920          */
 921         if (!nomount && should_auto_mount(zhp)) {
 922                 if (zfs_mount(zhp, NULL, 0) != 0) {
 923                         (void) fprintf(stderr, gettext("filesystem "
 924                             "successfully created, but not mounted\n"));
 925                         ret = 1;
 926                 } else if (zfs_share(zhp) != 0) {
 927                         (void) fprintf(stderr, gettext("filesystem "
 928                             "successfully created, but not shared\n"));
 929                         ret = 1;
 930                 }
 931         }
 932
 933 error:
 934         if (zhp)
 935                 zfs_close(zhp);
 936         nvlist_free(props);
 937         return (ret);
 938 badusage:
 939         nvlist_free(props);
 940         usage(B_FALSE);
 941         return (2);
 942 }
 943
 944 /*
 945  * zfs destroy [-rRf] <fs, vol>
 946  * zfs destroy [-rRd] <snap>
 947  *
 948  *      -r      Recursively destroy all children
 949  *      -R      Recursively destroy all dependents, including clones
 950  *      -f      Force unmounting of any dependents
 951  *      -d      If we can't destroy now, mark for deferred destruction
 952  *
 953  * Destroys the given dataset.  By default, it will unmount any filesystems,
 954  * and refuse to destroy a dataset that has any dependents.  A dependent can
 955  * either be a child, or a clone of a child.
 956  */
 957 typedef struct destroy_cbdata {
 958         boolean_t       cb_first;
 959         boolean_t       cb_force;
 960         boolean_t       cb_recurse;
 961         boolean_t       cb_error;
 962         boolean_t       cb_doclones;
 963         zfs_handle_t    *cb_target;
 964         boolean_t       cb_defer_destroy;
 965         boolean_t       cb_verbose;
 966         boolean_t       cb_parsable;
 967         boolean_t       cb_dryrun;
 968         nvlist_t        *cb_nvl;
 969         nvlist_t        *cb_batchedsnaps;
 970
 971         /* first snap in contiguous run */
 972         char            *cb_firstsnap;
 973         /* previous snap in contiguous run */
 974         char            *cb_prevsnap;
 975         int64_t         cb_snapused;
 976         char            *cb_snapspec;
 977         char            *cb_bookmark;
 978 } destroy_cbdata_t;
 979
 980 /*
 981  * Check for any dependents based on the '-r' or '-R' flags.
 982  */
 983 static int
 984 destroy_check_dependent(zfs_handle_t *zhp, void *data)
 985 {
 986         destroy_cbdata_t *cbp = data;
 987         const char *tname = zfs_get_name(cbp->cb_target);
 988         const char *name = zfs_get_name(zhp);
 989
 990         if (strncmp(tname, name, strlen(tname)) == 0 &&
 991             (name[strlen(tname)] == '/' || name[strlen(tname)] == '@')) {
 992                 /*
 993                  * This is a direct descendant, not a clone somewhere else in
 994                  * the hierarchy.
 995                  */
 996                 if (cbp->cb_recurse)
 997                         goto out;
 998
 999                 if (cbp->cb_first) {
1000                         (void) fprintf(stderr, gettext("cannot destroy '%s': "
1001                             "%s has children\n"),
1002                             zfs_get_name(cbp->cb_target),
1003                             zfs_type_to_name(zfs_get_type(cbp->cb_target)));
1004                         (void) fprintf(stderr, gettext("use '-r' to destroy "
1005                             "the following datasets:\n"));
1006                         cbp->cb_first = B_FALSE;
1007                         cbp->cb_error = B_TRUE;
1008                 }
1009
1010                 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
1011         } else {
1012                 /*
1013                  * This is a clone.  We only want to report this if the '-r'
1014                  * wasn't specified, or the target is a snapshot.
1015                  */
1016                 if (!cbp->cb_recurse &&
1017                     zfs_get_type(cbp->cb_target) != ZFS_TYPE_SNAPSHOT)
1018                         goto out;
1019
1020                 if (cbp->cb_first) {
1021                         (void) fprintf(stderr, gettext("cannot destroy '%s': "
1022                             "%s has dependent clones\n"),
1023                             zfs_get_name(cbp->cb_target),
1024                             zfs_type_to_name(zfs_get_type(cbp->cb_target)));
1025                         (void) fprintf(stderr, gettext("use '-R' to destroy "
1026                             "the following datasets:\n"));
1027                         cbp->cb_first = B_FALSE;
1028                         cbp->cb_error = B_TRUE;
1029                         cbp->cb_dryrun = B_TRUE;
1030                 }
1031
1032                 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
1033         }
1034
1035 out:
1036         zfs_close(zhp);
1037         return (0);
1038 }
1039
1040 static int
1041 destroy_callback(zfs_handle_t *zhp, void *data)
1042 {
1043         destroy_cbdata_t *cb = data;
1044         const char *name = zfs_get_name(zhp);
1045
1046         if (cb->cb_verbose) {
1047                 if (cb->cb_parsable) {
1048                         (void) printf("destroy\t%s\n", name);
1049                 } else if (cb->cb_dryrun) {
1050                         (void) printf(gettext("would destroy %s\n"),
1051                             name);
1052                 } else {
1053                         (void) printf(gettext("will destroy %s\n"),
1054                             name);
1055                 }
1056         }
1057
1058         /*
1059          * Ignore pools (which we've already flagged as an error before getting
1060          * here).
1061          */
1062         if (strchr(zfs_get_name(zhp), '/') == NULL &&
1063             zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
1064                 zfs_close(zhp);
1065                 return (0);
1066         }
1067         if (cb->cb_dryrun) {
1068                 zfs_close(zhp);
1069                 return (0);
1070         }
1071
1072         /*
1073          * We batch up all contiguous snapshots (even of different
1074          * filesystems) and destroy them with one ioctl.  We can't
1075          * simply do all snap deletions and then all fs deletions,
1076          * because we must delete a clone before its origin.
1077          */
1078         if (zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT) {
1079                 fnvlist_add_boolean(cb->cb_batchedsnaps, name);
1080         } else {
1081                 int error = zfs_destroy_snaps_nvl(g_zfs,
1082                     cb->cb_batchedsnaps, B_FALSE);
1083                 fnvlist_free(cb->cb_batchedsnaps);
1084                 cb->cb_batchedsnaps = fnvlist_alloc();
1085
1086                 if (error != 0 ||
1087                     zfs_unmount(zhp, NULL, cb->cb_force ? MS_FORCE : 0) != 0 ||
1088                     zfs_destroy(zhp, cb->cb_defer_destroy) != 0) {
1089                         zfs_close(zhp);
1090                         return (-1);
1091                 }
1092         }
1093
1094         zfs_close(zhp);
1095         return (0);
1096 }
1097
1098 static int
1099 destroy_print_cb(zfs_handle_t *zhp, void *arg)
1100 {
1101         destroy_cbdata_t *cb = arg;
1102         const char *name = zfs_get_name(zhp);
1103         int err = 0;
1104
1105         if (nvlist_exists(cb->cb_nvl, name)) {
1106                 if (cb->cb_firstsnap == NULL)
1107                         cb->cb_firstsnap = strdup(name);
1108                 if (cb->cb_prevsnap != NULL)
1109                         free(cb->cb_prevsnap);
1110                 /* this snap continues the current range */
1111                 cb->cb_prevsnap = strdup(name);
1112                 if (cb->cb_firstsnap == NULL || cb->cb_prevsnap == NULL)
1113                         nomem();
1114                 if (cb->cb_verbose) {
1115                         if (cb->cb_parsable) {
1116                                 (void) printf("destroy\t%s\n", name);
1117                         } else if (cb->cb_dryrun) {
1118                                 (void) printf(gettext("would destroy %s\n"),
1119                                     name);
1120                         } else {
1121                                 (void) printf(gettext("will destroy %s\n"),
1122                                     name);
1123                         }
1124                 }
1125         } else if (cb->cb_firstsnap != NULL) {
1126                 /* end of this range */
1127                 uint64_t used = 0;
1128                 err = lzc_snaprange_space(cb->cb_firstsnap,
1129                     cb->cb_prevsnap, &used);
1130                 cb->cb_snapused += used;
1131                 free(cb->cb_firstsnap);
1132                 cb->cb_firstsnap = NULL;
1133                 free(cb->cb_prevsnap);
1134                 cb->cb_prevsnap = NULL;
1135         }
1136         zfs_close(zhp);
1137         return (err);
1138 }
1139
1140 static int
1141 destroy_print_snapshots(zfs_handle_t *fs_zhp, destroy_cbdata_t *cb)
1142 {
1143         int err = 0;
1144         assert(cb->cb_firstsnap == NULL);
1145         assert(cb->cb_prevsnap == NULL);
1146         err = zfs_iter_snapshots_sorted(fs_zhp, destroy_print_cb, cb);
1147         if (cb->cb_firstsnap != NULL) {
1148                 uint64_t used = 0;
1149                 if (err == 0) {
1150                         err = lzc_snaprange_space(cb->cb_firstsnap,
1151                             cb->cb_prevsnap, &used);
1152                 }
1153                 cb->cb_snapused += used;
1154                 free(cb->cb_firstsnap);
1155                 cb->cb_firstsnap = NULL;
1156                 free(cb->cb_prevsnap);
1157                 cb->cb_prevsnap = NULL;
1158         }
1159         return (err);
1160 }
1161
1162 static int
1163 snapshot_to_nvl_cb(zfs_handle_t *zhp, void *arg)
1164 {
1165         destroy_cbdata_t *cb = arg;
1166         int err = 0;
1167
1168         /* Check for clones. */
1169         if (!cb->cb_doclones && !cb->cb_defer_destroy) {
1170                 cb->cb_target = zhp;
1171                 cb->cb_first = B_TRUE;
1172                 err = zfs_iter_dependents(zhp, B_TRUE,
1173                     destroy_check_dependent, cb);
1174         }
1175
1176         if (err == 0) {
1177                 if (nvlist_add_boolean(cb->cb_nvl, zfs_get_name(zhp)))
1178                         nomem();
1179         }
1180         zfs_close(zhp);
1181         return (err);
1182 }
1183
1184 static int
1185 gather_snapshots(zfs_handle_t *zhp, void *arg)
1186 {
1187         destroy_cbdata_t *cb = arg;
1188         int err = 0;
1189
1190         err = zfs_iter_snapspec(zhp, cb->cb_snapspec, snapshot_to_nvl_cb, cb);
1191         if (err == ENOENT)
1192                 err = 0;
1193         if (err != 0)
1194                 goto out;
1195
1196         if (cb->cb_verbose) {
1197                 err = destroy_print_snapshots(zhp, cb);
1198                 if (err != 0)
1199                         goto out;
1200         }
1201
1202         if (cb->cb_recurse)
1203                 err = zfs_iter_filesystems(zhp, gather_snapshots, cb);
1204
1205 out:
1206         zfs_close(zhp);
1207         return (err);
1208 }
1209
1210 static int
1211 destroy_clones(destroy_cbdata_t *cb)
1212 {
1213         nvpair_t *pair;
1214         for (pair = nvlist_next_nvpair(cb->cb_nvl, NULL);
1215             pair != NULL;
1216             pair = nvlist_next_nvpair(cb->cb_nvl, pair)) {
1217                 zfs_handle_t *zhp = zfs_open(g_zfs, nvpair_name(pair),
1218                     ZFS_TYPE_SNAPSHOT);
1219                 if (zhp != NULL) {
1220                         boolean_t defer = cb->cb_defer_destroy;
1221                         int err = 0;
1222
1223                         /*
1224                          * We can't defer destroy non-snapshots, so set it to
1225                          * false while destroying the clones.
1226                          */
1227                         cb->cb_defer_destroy = B_FALSE;
1228                         err = zfs_iter_dependents(zhp, B_FALSE,
1229                             destroy_callback, cb);
1230                         cb->cb_defer_destroy = defer;
1231                         zfs_close(zhp);
1232                         if (err != 0)
1233                                 return (err);
1234                 }
1235         }
1236         return (0);
1237 }
1238
1239 static int
1240 zfs_do_destroy(int argc, char **argv)
1241 {
1242         destroy_cbdata_t cb = { 0 };
1243         int rv = 0;
1244         int err = 0;
1245         int c;
1246         zfs_handle_t *zhp = NULL;
1247         char *at, *pound;
1248         zfs_type_t type = ZFS_TYPE_DATASET;
1249
1250         /* check options */
1251         while ((c = getopt(argc, argv, "vpndfrR")) != -1) {
1252                 switch (c) {
1253                 case 'v':
1254                         cb.cb_verbose = B_TRUE;
1255                         break;
1256                 case 'p':
1257                         cb.cb_verbose = B_TRUE;
1258                         cb.cb_parsable = B_TRUE;
1259                         break;
1260                 case 'n':
1261                         cb.cb_dryrun = B_TRUE;
1262                         break;
1263                 case 'd':
1264                         cb.cb_defer_destroy = B_TRUE;
1265                         type = ZFS_TYPE_SNAPSHOT;
1266                         break;
1267                 case 'f':
1268                         cb.cb_force = B_TRUE;
1269                         break;
1270                 case 'r':
1271                         cb.cb_recurse = B_TRUE;
1272                         break;
1273                 case 'R':
1274                         cb.cb_recurse = B_TRUE;
1275                         cb.cb_doclones = B_TRUE;
1276                         break;
1277                 case '?':
1278                 default:
1279                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1280                             optopt);
1281                         usage(B_FALSE);
1282                 }
1283         }
1284
1285         argc -= optind;
1286         argv += optind;
1287
1288         /* check number of arguments */
1289         if (argc == 0) {
1290                 (void) fprintf(stderr, gettext("missing dataset argument\n"));
1291                 usage(B_FALSE);
1292         }
1293         if (argc > 1) {
1294                 (void) fprintf(stderr, gettext("too many arguments\n"));
1295                 usage(B_FALSE);
1296         }
1297
1298         at = strchr(argv[0], '@');
1299         pound = strchr(argv[0], '#');
1300         if (at != NULL) {
1301
1302                 /* Build the list of snaps to destroy in cb_nvl. */
1303                 cb.cb_nvl = fnvlist_alloc();
1304
1305                 *at = '\0';
1306                 zhp = zfs_open(g_zfs, argv[0],
1307                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
1308                 if (zhp == NULL)
1309                         return (1);
1310
1311                 cb.cb_snapspec = at + 1;
1312                 if (gather_snapshots(zfs_handle_dup(zhp), &cb) != 0 ||
1313                     cb.cb_error) {
1314                         rv = 1;
1315                         goto out;
1316                 }
1317
1318                 if (nvlist_empty(cb.cb_nvl)) {
1319                         (void) fprintf(stderr, gettext("could not find any "
1320                             "snapshots to destroy; check snapshot names.\n"));
1321                         rv = 1;
1322                         goto out;
1323                 }
1324
1325                 if (cb.cb_verbose) {
1326                         char buf[16];
1327                         zfs_nicenum(cb.cb_snapused, buf, sizeof (buf));
1328                         if (cb.cb_parsable) {
1329                                 (void) printf("reclaim\t%llu\n",
1330                                     cb.cb_snapused);
1331                         } else if (cb.cb_dryrun) {
1332                                 (void) printf(gettext("would reclaim %s\n"),
1333                                     buf);
1334                         } else {
1335                                 (void) printf(gettext("will reclaim %s\n"),
1336                                     buf);
1337                         }
1338                 }
1339
1340                 if (!cb.cb_dryrun) {
1341                         if (cb.cb_doclones) {
1342                                 cb.cb_batchedsnaps = fnvlist_alloc();
1343                                 err = destroy_clones(&cb);
1344                                 if (err == 0) {
1345                                         err = zfs_destroy_snaps_nvl(g_zfs,
1346                                             cb.cb_batchedsnaps, B_FALSE);
1347                                 }
1348                                 if (err != 0) {
1349                                         rv = 1;
1350                                         goto out;
1351                                 }
1352                         }
1353                         if (err == 0) {
1354                                 err = zfs_destroy_snaps_nvl(g_zfs, cb.cb_nvl,
1355                                     cb.cb_defer_destroy);
1356                         }
1357                 }
1358
1359                 if (err != 0)
1360                         rv = 1;
1361         } else if (pound != NULL) {
1362                 int err;
1363                 nvlist_t *nvl;
1364
1365                 if (cb.cb_dryrun) {
1366                         (void) fprintf(stderr,
1367                             "dryrun is not supported with bookmark\n");
1368                         return (-1);
1369                 }
1370
1371                 if (cb.cb_defer_destroy) {
1372                         (void) fprintf(stderr,
1373                             "defer destroy is not supported with bookmark\n");
1374                         return (-1);
1375                 }
1376
1377                 if (cb.cb_recurse) {
1378                         (void) fprintf(stderr,
1379                             "recursive is not supported with bookmark\n");
1380                         return (-1);
1381                 }
1382
1383                 if (!zfs_bookmark_exists(argv[0])) {
1384                         (void) fprintf(stderr, gettext("bookmark '%s' "
1385                             "does not exist.\n"), argv[0]);
1386                         return (1);
1387                 }
1388
1389                 nvl = fnvlist_alloc();
1390                 fnvlist_add_boolean(nvl, argv[0]);
1391
1392                 err = lzc_destroy_bookmarks(nvl, NULL);
1393                 if (err != 0) {
1394                         (void) zfs_standard_error(g_zfs, err,
1395                             "cannot destroy bookmark");
1396                 }
1397
1398                 nvlist_free(cb.cb_nvl);
1399
1400                 return (err);
1401         } else {
1402                 /* Open the given dataset */
1403                 if ((zhp = zfs_open(g_zfs, argv[0], type)) == NULL)
1404                         return (1);
1405
1406                 cb.cb_target = zhp;
1407
1408                 /*
1409                  * Perform an explicit check for pools before going any further.
1410                  */
1411                 if (!cb.cb_recurse && strchr(zfs_get_name(zhp), '/') == NULL &&
1412                     zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
1413                         (void) fprintf(stderr, gettext("cannot destroy '%s': "
1414                             "operation does not apply to pools\n"),
1415                             zfs_get_name(zhp));
1416                         (void) fprintf(stderr, gettext("use 'zfs destroy -r "
1417                             "%s' to destroy all datasets in the pool\n"),
1418                             zfs_get_name(zhp));
1419                         (void) fprintf(stderr, gettext("use 'zpool destroy %s' "
1420                             "to destroy the pool itself\n"), zfs_get_name(zhp));
1421                         rv = 1;
1422                         goto out;
1423                 }
1424
1425                 /*
1426                  * Check for any dependents and/or clones.
1427                  */
1428                 cb.cb_first = B_TRUE;
1429                 if (!cb.cb_doclones &&
1430                     zfs_iter_dependents(zhp, B_TRUE, destroy_check_dependent,
1431                     &cb) != 0) {
1432                         rv = 1;
1433                         goto out;
1434                 }
1435
1436                 if (cb.cb_error) {
1437                         rv = 1;
1438                         goto out;
1439                 }
1440
1441                 cb.cb_batchedsnaps = fnvlist_alloc();
1442                 if (zfs_iter_dependents(zhp, B_FALSE, destroy_callback,
1443                     &cb) != 0) {
1444                         rv = 1;
1445                         goto out;
1446                 }
1447
1448                 /*
1449                  * Do the real thing.  The callback will close the
1450                  * handle regardless of whether it succeeds or not.
1451                  */
1452                 err = destroy_callback(zhp, &cb);
1453                 zhp = NULL;
1454                 if (err == 0) {
1455                         err = zfs_destroy_snaps_nvl(g_zfs,
1456                             cb.cb_batchedsnaps, cb.cb_defer_destroy);
1457                 }
1458                 if (err != 0)
1459                         rv = 1;
1460         }
1461
1462 out:
1463         fnvlist_free(cb.cb_batchedsnaps);
1464         fnvlist_free(cb.cb_nvl);
1465         if (zhp != NULL)
1466                 zfs_close(zhp);
1467         return (rv);
1468 }
1469
1470 static boolean_t
1471 is_recvd_column(zprop_get_cbdata_t *cbp)
1472 {
1473         int i;
1474         zfs_get_column_t col;
1475
1476         for (i = 0; i < ZFS_GET_NCOLS &&
1477             (col = cbp->cb_columns[i]) != GET_COL_NONE; i++)
1478                 if (col == GET_COL_RECVD)
1479                         return (B_TRUE);
1480         return (B_FALSE);
1481 }
1482
1483 /*
1484  * zfs get [-rHp] [-o all | field[,field]...] [-s source[,source]...]
1485  *      < all | property[,property]... > < fs | snap | vol > ...
1486  *
1487  *      -r      recurse over any child datasets
1488  *      -H      scripted mode.  Headers are stripped, and fields are separated
1489  *              by tabs instead of spaces.
1490  *      -o      Set of fields to display.  One of "name,property,value,
1491  *              received,source". Default is "name,property,value,source".
1492  *              "all" is an alias for all five.
1493  *      -s      Set of sources to allow.  One of
1494  *              "local,default,inherited,received,temporary,none".  Default is
1495  *              all six.
1496  *      -p      Display values in parsable (literal) format.
1497  *
1498  *  Prints properties for the given datasets.  The user can control which
1499  *  columns to display as well as which property types to allow.
1500  */
1501
1502 /*
1503  * Invoked to display the properties for a single dataset.
1504  */
1505 static int
1506 get_callback(zfs_handle_t *zhp, void *data)
1507 {
1508         char buf[ZFS_MAXPROPLEN];
1509         char rbuf[ZFS_MAXPROPLEN];
1510         zprop_source_t sourcetype;
1511         char source[ZFS_MAXNAMELEN];
1512         zprop_get_cbdata_t *cbp = data;
1513         nvlist_t *user_props = zfs_get_user_props(zhp);
1514         zprop_list_t *pl = cbp->cb_proplist;
1515         nvlist_t *propval;
1516         char *strval;
1517         char *sourceval;
1518         boolean_t received = is_recvd_column(cbp);
1519
1520         for (; pl != NULL; pl = pl->pl_next) {
1521                 char *recvdval = NULL;
1522                 /*
1523                  * Skip the special fake placeholder.  This will also skip over
1524                  * the name property when 'all' is specified.
1525                  */
1526                 if (pl->pl_prop == ZFS_PROP_NAME &&
1527                     pl == cbp->cb_proplist)
1528                         continue;
1529
1530                 if (pl->pl_prop != ZPROP_INVAL) {
1531                         if (zfs_prop_get(zhp, pl->pl_prop, buf,
1532                             sizeof (buf), &sourcetype, source,
1533                             sizeof (source),
1534                             cbp->cb_literal) != 0) {
1535                                 if (pl->pl_all)
1536                                         continue;
1537                                 if (!zfs_prop_valid_for_type(pl->pl_prop,
1538                                     ZFS_TYPE_DATASET)) {
1539                                         (void) fprintf(stderr,
1540                                             gettext("No such property '%s'\n"),
1541                                             zfs_prop_to_name(pl->pl_prop));
1542                                         continue;
1543                                 }
1544                                 sourcetype = ZPROP_SRC_NONE;
1545                                 (void) strlcpy(buf, "-", sizeof (buf));
1546                         }
1547
1548                         if (received && (zfs_prop_get_recvd(zhp,
1549                             zfs_prop_to_name(pl->pl_prop), rbuf, sizeof (rbuf),
1550                             cbp->cb_literal) == 0))
1551                                 recvdval = rbuf;
1552
1553                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1554                             zfs_prop_to_name(pl->pl_prop),
1555                             buf, sourcetype, source, recvdval);
1556                 } else if (zfs_prop_userquota(pl->pl_user_prop)) {
1557                         sourcetype = ZPROP_SRC_LOCAL;
1558
1559                         if (zfs_prop_get_userquota(zhp, pl->pl_user_prop,
1560                             buf, sizeof (buf), cbp->cb_literal) != 0) {
1561                                 sourcetype = ZPROP_SRC_NONE;
1562                                 (void) strlcpy(buf, "-", sizeof (buf));
1563                         }
1564
1565                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1566                             pl->pl_user_prop, buf, sourcetype, source, NULL);
1567                 } else if (zfs_prop_written(pl->pl_user_prop)) {
1568                         sourcetype = ZPROP_SRC_LOCAL;
1569
1570                         if (zfs_prop_get_written(zhp, pl->pl_user_prop,
1571                             buf, sizeof (buf), cbp->cb_literal) != 0) {
1572                                 sourcetype = ZPROP_SRC_NONE;
1573                                 (void) strlcpy(buf, "-", sizeof (buf));
1574                         }
1575
1576                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1577                             pl->pl_user_prop, buf, sourcetype, source, NULL);
1578                 } else {
1579                         if (nvlist_lookup_nvlist(user_props,
1580                             pl->pl_user_prop, &propval) != 0) {
1581                                 if (pl->pl_all)
1582                                         continue;
1583                                 sourcetype = ZPROP_SRC_NONE;
1584                                 strval = "-";
1585                         } else {
1586                                 verify(nvlist_lookup_string(propval,
1587                                     ZPROP_VALUE, &strval) == 0);
1588                                 verify(nvlist_lookup_string(propval,
1589                                     ZPROP_SOURCE, &sourceval) == 0);
1590
1591                                 if (strcmp(sourceval,
1592                                     zfs_get_name(zhp)) == 0) {
1593                                         sourcetype = ZPROP_SRC_LOCAL;
1594                                 } else if (strcmp(sourceval,
1595                                     ZPROP_SOURCE_VAL_RECVD) == 0) {
1596                                         sourcetype = ZPROP_SRC_RECEIVED;
1597                                 } else {
1598                                         sourcetype = ZPROP_SRC_INHERITED;
1599                                         (void) strlcpy(source,
1600                                             sourceval, sizeof (source));
1601                                 }
1602                         }
1603
1604                         if (received && (zfs_prop_get_recvd(zhp,
1605                             pl->pl_user_prop, rbuf, sizeof (rbuf),
1606                             cbp->cb_literal) == 0))
1607                                 recvdval = rbuf;
1608
1609                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1610                             pl->pl_user_prop, strval, sourcetype,
1611                             source, recvdval);
1612                 }
1613         }
1614
1615         return (0);
1616 }
1617
1618 static int
1619 zfs_do_get(int argc, char **argv)
1620 {
1621         zprop_get_cbdata_t cb = { 0 };
1622         int i, c, flags = ZFS_ITER_ARGS_CAN_BE_PATHS;
1623         int types = ZFS_TYPE_DATASET;
1624         char *value, *fields;
1625         int ret = 0;
1626         int limit = 0;
1627         zprop_list_t fake_name = { 0 };
1628
1629         /*
1630          * Set up default columns and sources.
1631          */
1632         cb.cb_sources = ZPROP_SRC_ALL;
1633         cb.cb_columns[0] = GET_COL_NAME;
1634         cb.cb_columns[1] = GET_COL_PROPERTY;
1635         cb.cb_columns[2] = GET_COL_VALUE;
1636         cb.cb_columns[3] = GET_COL_SOURCE;
1637         cb.cb_type = ZFS_TYPE_DATASET;
1638
1639         /* check options */
1640         while ((c = getopt(argc, argv, ":d:o:s:rt:Hp")) != -1) {
1641                 switch (c) {
1642                 case 'p':
1643                         cb.cb_literal = B_TRUE;
1644                         break;
1645                 case 'd':
1646                         limit = parse_depth(optarg, &flags);
1647                         break;
1648                 case 'r':
1649                         flags |= ZFS_ITER_RECURSE;
1650                         break;
1651                 case 'H':
1652                         cb.cb_scripted = B_TRUE;
1653                         break;
1654                 case ':':
1655                         (void) fprintf(stderr, gettext("missing argument for "
1656                             "'%c' option\n"), optopt);
1657                         usage(B_FALSE);
1658                         break;
1659                 case 'o':
1660                         /*
1661                          * Process the set of columns to display.  We zero out
1662                          * the structure to give us a blank slate.
1663                          */
1664                         bzero(&cb.cb_columns, sizeof (cb.cb_columns));
1665                         i = 0;
1666                         while (*optarg != '\0') {
1667                                 static char *col_subopts[] =
1668                                     { "name", "property", "value", "received",
1669                                     "source", "all", NULL };
1670
1671                                 if (i == ZFS_GET_NCOLS) {
1672                                         (void) fprintf(stderr, gettext("too "
1673                                             "many fields given to -o "
1674                                             "option\n"));
1675                                         usage(B_FALSE);
1676                                 }
1677
1678                                 switch (getsubopt(&optarg, col_subopts,
1679                                     &value)) {
1680                                 case 0:
1681                                         cb.cb_columns[i++] = GET_COL_NAME;
1682                                         break;
1683                                 case 1:
1684                                         cb.cb_columns[i++] = GET_COL_PROPERTY;
1685                                         break;
1686                                 case 2:
1687                                         cb.cb_columns[i++] = GET_COL_VALUE;
1688                                         break;
1689                                 case 3:
1690                                         cb.cb_columns[i++] = GET_COL_RECVD;
1691                                         flags |= ZFS_ITER_RECVD_PROPS;
1692                                         break;
1693                                 case 4:
1694                                         cb.cb_columns[i++] = GET_COL_SOURCE;
1695                                         break;
1696                                 case 5:
1697                                         if (i > 0) {
1698                                                 (void) fprintf(stderr,
1699                                                     gettext("\"all\" conflicts "
1700                                                     "with specific fields "
1701                                                     "given to -o option\n"));
1702                                                 usage(B_FALSE);
1703                                         }
1704                                         cb.cb_columns[0] = GET_COL_NAME;
1705                                         cb.cb_columns[1] = GET_COL_PROPERTY;
1706                                         cb.cb_columns[2] = GET_COL_VALUE;
1707                                         cb.cb_columns[3] = GET_COL_RECVD;
1708                                         cb.cb_columns[4] = GET_COL_SOURCE;
1709                                         flags |= ZFS_ITER_RECVD_PROPS;
1710                                         i = ZFS_GET_NCOLS;
1711                                         break;
1712                                 default:
1713                                         (void) fprintf(stderr,
1714                                             gettext("invalid column name "
1715                                             "'%s'\n"), value);
1716                                         usage(B_FALSE);
1717                                 }
1718                         }
1719                         break;
1720
1721                 case 's':
1722                         cb.cb_sources = 0;
1723                         while (*optarg != '\0') {
1724                                 static char *source_subopts[] = {
1725                                         "local", "default", "inherited",
1726                                         "received", "temporary", "none",
1727                                         NULL };
1728
1729                                 switch (getsubopt(&optarg, source_subopts,
1730                                     &value)) {
1731                                 case 0:
1732                                         cb.cb_sources |= ZPROP_SRC_LOCAL;
1733                                         break;
1734                                 case 1:
1735                                         cb.cb_sources |= ZPROP_SRC_DEFAULT;
1736                                         break;
1737                                 case 2:
1738                                         cb.cb_sources |= ZPROP_SRC_INHERITED;
1739                                         break;
1740                                 case 3:
1741                                         cb.cb_sources |= ZPROP_SRC_RECEIVED;
1742                                         break;
1743                                 case 4:
1744                                         cb.cb_sources |= ZPROP_SRC_TEMPORARY;
1745                                         break;
1746                                 case 5:
1747                                         cb.cb_sources |= ZPROP_SRC_NONE;
1748                                         break;
1749                                 default:
1750                                         (void) fprintf(stderr,
1751                                             gettext("invalid source "
1752                                             "'%s'\n"), value);
1753                                         usage(B_FALSE);
1754                                 }
1755                         }
1756                         break;
1757
1758                 case 't':
1759                         types = 0;
1760                         flags &= ~ZFS_ITER_PROP_LISTSNAPS;
1761                         while (*optarg != '\0') {
1762                                 static char *type_subopts[] = { "filesystem",
1763                                     "volume", "snapshot", "bookmark",
1764                                     "all", NULL };
1765
1766                                 switch (getsubopt(&optarg, type_subopts,
1767                                     &value)) {
1768                                 case 0:
1769                                         types |= ZFS_TYPE_FILESYSTEM;
1770                                         break;
1771                                 case 1:
1772                                         types |= ZFS_TYPE_VOLUME;
1773                                         break;
1774                                 case 2:
1775                                         types |= ZFS_TYPE_SNAPSHOT;
1776                                         break;
1777                                 case 3:
1778                                         types |= ZFS_TYPE_BOOKMARK;
1779                                         break;
1780                                 case 4:
1781                                         types = ZFS_TYPE_DATASET |
1782                                             ZFS_TYPE_BOOKMARK;
1783                                         break;
1784
1785                                 default:
1786                                         (void) fprintf(stderr,
1787                                             gettext("invalid type '%s'\n"),
1788                                             value);
1789                                         usage(B_FALSE);
1790                                 }
1791                         }
1792                         break;
1793
1794                 case '?':
1795                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1796                             optopt);
1797                         usage(B_FALSE);
1798                 }
1799         }
1800
1801         argc -= optind;
1802         argv += optind;
1803
1804         if (argc < 1) {
1805                 (void) fprintf(stderr, gettext("missing property "
1806                     "argument\n"));
1807                 usage(B_FALSE);
1808         }
1809
1810         fields = argv[0];
1811
1812         if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
1813             != 0)
1814                 usage(B_FALSE);
1815
1816         argc--;
1817         argv++;
1818
1819         /*
1820          * As part of zfs_expand_proplist(), we keep track of the maximum column
1821          * width for each property.  For the 'NAME' (and 'SOURCE') columns, we
1822          * need to know the maximum name length.  However, the user likely did
1823          * not specify 'name' as one of the properties to fetch, so we need to
1824          * make sure we always include at least this property for
1825          * print_get_headers() to work properly.
1826          */
1827         if (cb.cb_proplist != NULL) {
1828                 fake_name.pl_prop = ZFS_PROP_NAME;
1829                 fake_name.pl_width = strlen(gettext("NAME"));
1830                 fake_name.pl_next = cb.cb_proplist;
1831                 cb.cb_proplist = &fake_name;
1832         }
1833
1834         cb.cb_first = B_TRUE;
1835
1836         /* run for each object */
1837         ret = zfs_for_each(argc, argv, flags, types, NULL,
1838             &cb.cb_proplist, limit, get_callback, &cb);
1839
1840         if (cb.cb_proplist == &fake_name)
1841                 zprop_free_list(fake_name.pl_next);
1842         else
1843                 zprop_free_list(cb.cb_proplist);
1844
1845         return (ret);
1846 }
1847
1848 /*
1849  * inherit [-rS] <property> <fs|vol> ...
1850  *
1851  *      -r      Recurse over all children
1852  *      -S      Revert to received value, if any
1853  *
1854  * For each dataset specified on the command line, inherit the given property
1855  * from its parent.  Inheriting a property at the pool level will cause it to
1856  * use the default value.  The '-r' flag will recurse over all children, and is
1857  * useful for setting a property on a hierarchy-wide basis, regardless of any
1858  * local modifications for each dataset.
1859  */
1860
1861 typedef struct inherit_cbdata {
1862         const char *cb_propname;
1863         boolean_t cb_received;
1864 } inherit_cbdata_t;
1865
1866 static int
1867 inherit_recurse_cb(zfs_handle_t *zhp, void *data)
1868 {
1869         inherit_cbdata_t *cb = data;
1870         zfs_prop_t prop = zfs_name_to_prop(cb->cb_propname);
1871
1872         /*
1873          * If we're doing it recursively, then ignore properties that
1874          * are not valid for this type of dataset.
1875          */
1876         if (prop != ZPROP_INVAL &&
1877             !zfs_prop_valid_for_type(prop, zfs_get_type(zhp)))
1878                 return (0);
1879
1880         return (zfs_prop_inherit(zhp, cb->cb_propname, cb->cb_received) != 0);
1881 }
1882
1883 static int
1884 inherit_cb(zfs_handle_t *zhp, void *data)
1885 {
1886         inherit_cbdata_t *cb = data;
1887
1888         return (zfs_prop_inherit(zhp, cb->cb_propname, cb->cb_received) != 0);
1889 }
1890
1891 static int
1892 zfs_do_inherit(int argc, char **argv)
1893 {
1894         int c;
1895         zfs_prop_t prop;
1896         inherit_cbdata_t cb = { 0 };
1897         char *propname;
1898         int ret = 0;
1899         int flags = 0;
1900         boolean_t received = B_FALSE;
1901
1902         /* check options */
1903         while ((c = getopt(argc, argv, "rS")) != -1) {
1904                 switch (c) {
1905                 case 'r':
1906                         flags |= ZFS_ITER_RECURSE;
1907                         break;
1908                 case 'S':
1909                         received = B_TRUE;
1910                         break;
1911                 case '?':
1912                 default:
1913                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1914                             optopt);
1915                         usage(B_FALSE);
1916                 }
1917         }
1918
1919         argc -= optind;
1920         argv += optind;
1921
1922         /* check number of arguments */
1923         if (argc < 1) {
1924                 (void) fprintf(stderr, gettext("missing property argument\n"));
1925                 usage(B_FALSE);
1926         }
1927         if (argc < 2) {
1928                 (void) fprintf(stderr, gettext("missing dataset argument\n"));
1929                 usage(B_FALSE);
1930         }
1931
1932         propname = argv[0];
1933         argc--;
1934         argv++;
1935
1936         if ((prop = zfs_name_to_prop(propname)) != ZPROP_INVAL) {
1937                 if (zfs_prop_readonly(prop)) {
1938                         (void) fprintf(stderr, gettext(
1939                             "%s property is read-only\n"),
1940                             propname);
1941                         return (1);
1942                 }
1943                 if (!zfs_prop_inheritable(prop) && !received) {
1944                         (void) fprintf(stderr, gettext("'%s' property cannot "
1945                             "be inherited\n"), propname);
1946                         if (prop == ZFS_PROP_QUOTA ||
1947                             prop == ZFS_PROP_RESERVATION ||
1948                             prop == ZFS_PROP_REFQUOTA ||
1949                             prop == ZFS_PROP_REFRESERVATION) {
1950                                 (void) fprintf(stderr, gettext("use 'zfs set "
1951                                     "%s=none' to clear\n"), propname);
1952                                 (void) fprintf(stderr, gettext("use 'zfs "
1953                                     "inherit -S %s' to revert to received "
1954                                     "value\n"), propname);
1955                         }
1956                         return (1);
1957                 }
1958                 if (received && (prop == ZFS_PROP_VOLSIZE ||
1959                     prop == ZFS_PROP_VERSION)) {
1960                         (void) fprintf(stderr, gettext("'%s' property cannot "
1961                             "be reverted to a received value\n"), propname);
1962                         return (1);
1963                 }
1964         } else if (!zfs_prop_user(propname)) {
1965                 (void) fprintf(stderr, gettext("invalid property '%s'\n"),
1966                     propname);
1967                 usage(B_FALSE);
1968         }
1969
1970         cb.cb_propname = propname;
1971         cb.cb_received = received;
1972
1973         if (flags & ZFS_ITER_RECURSE) {
1974                 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
1975                     NULL, NULL, 0, inherit_recurse_cb, &cb);
1976         } else {
1977                 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
1978                     NULL, NULL, 0, inherit_cb, &cb);
1979         }
1980
1981         return (ret);
1982 }
1983
1984 typedef struct upgrade_cbdata {
1985         uint64_t cb_numupgraded;
1986         uint64_t cb_numsamegraded;
1987         uint64_t cb_numfailed;
1988         uint64_t cb_version;
1989         boolean_t cb_newer;
1990         boolean_t cb_foundone;
1991         char cb_lastfs[ZFS_MAXNAMELEN];
1992 } upgrade_cbdata_t;
1993
1994 static int
1995 same_pool(zfs_handle_t *zhp, const char *name)
1996 {
1997         int len1 = strcspn(name, "/@");
1998         const char *zhname = zfs_get_name(zhp);
1999         int len2 = strcspn(zhname, "/@");
2000
2001         if (len1 != len2)
2002                 return (B_FALSE);
2003         return (strncmp(name, zhname, len1) == 0);
2004 }
2005
2006 static int
2007 upgrade_list_callback(zfs_handle_t *zhp, void *data)
2008 {
2009         upgrade_cbdata_t *cb = data;
2010         int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
2011
2012         /* list if it's old/new */
2013         if ((!cb->cb_newer && version < ZPL_VERSION) ||
2014             (cb->cb_newer && version > ZPL_VERSION)) {
2015                 char *str;
2016                 if (cb->cb_newer) {
2017                         str = gettext("The following filesystems are "
2018                             "formatted using a newer software version and\n"
2019                             "cannot be accessed on the current system.\n\n");
2020                 } else {
2021                         str = gettext("The following filesystems are "
2022                             "out of date, and can be upgraded.  After being\n"
2023                             "upgraded, these filesystems (and any 'zfs send' "
2024                             "streams generated from\n"
2025                             "subsequent snapshots) will no longer be "
2026                             "accessible by older software versions.\n\n");
2027                 }
2028
2029                 if (!cb->cb_foundone) {
2030                         (void) puts(str);
2031                         (void) printf(gettext("VER  FILESYSTEM\n"));
2032                         (void) printf(gettext("---  ------------\n"));
2033                         cb->cb_foundone = B_TRUE;
2034                 }
2035
2036                 (void) printf("%2u   %s\n", version, zfs_get_name(zhp));
2037         }
2038
2039         return (0);
2040 }
2041
2042 static int
2043 upgrade_set_callback(zfs_handle_t *zhp, void *data)
2044 {
2045         upgrade_cbdata_t *cb = data;
2046         int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
2047         int needed_spa_version;
2048         int spa_version;
2049
2050         if (zfs_spa_version(zhp, &spa_version) < 0)
2051                 return (-1);
2052
2053         needed_spa_version = zfs_spa_version_map(cb->cb_version);
2054
2055         if (needed_spa_version < 0)
2056                 return (-1);
2057
2058         if (spa_version < needed_spa_version) {
2059                 /* can't upgrade */
2060                 (void) printf(gettext("%s: can not be "
2061                     "upgraded; the pool version needs to first "
2062                     "be upgraded\nto version %d\n\n"),
2063                     zfs_get_name(zhp), needed_spa_version);
2064                 cb->cb_numfailed++;
2065                 return (0);
2066         }
2067
2068         /* upgrade */
2069         if (version < cb->cb_version) {
2070                 char verstr[16];
2071                 (void) snprintf(verstr, sizeof (verstr),
2072                     "%llu", cb->cb_version);
2073                 if (cb->cb_lastfs[0] && !same_pool(zhp, cb->cb_lastfs)) {
2074                         /*
2075                          * If they did "zfs upgrade -a", then we could
2076                          * be doing ioctls to different pools.  We need
2077                          * to log this history once to each pool, and bypass
2078                          * the normal history logging that happens in main().
2079                          */
2080                         (void) zpool_log_history(g_zfs, history_str);
2081                         log_history = B_FALSE;
2082                 }
2083                 if (zfs_prop_set(zhp, "version", verstr) == 0)
2084                         cb->cb_numupgraded++;
2085                 else
2086                         cb->cb_numfailed++;
2087                 (void) strcpy(cb->cb_lastfs, zfs_get_name(zhp));
2088         } else if (version > cb->cb_version) {
2089                 /* can't downgrade */
2090                 (void) printf(gettext("%s: can not be downgraded; "
2091                     "it is already at version %u\n"),
2092                     zfs_get_name(zhp), version);
2093                 cb->cb_numfailed++;
2094         } else {
2095                 cb->cb_numsamegraded++;
2096         }
2097         return (0);
2098 }
2099
2100 /*
2101  * zfs upgrade
2102  * zfs upgrade -v
2103  * zfs upgrade [-r] [-V <version>] <-a | filesystem>
2104  */
2105 static int
2106 zfs_do_upgrade(int argc, char **argv)
2107 {
2108         boolean_t all = B_FALSE;
2109         boolean_t showversions = B_FALSE;
2110         int ret = 0;
2111         upgrade_cbdata_t cb = { 0 };
2112         int c;
2113         int flags = ZFS_ITER_ARGS_CAN_BE_PATHS;
2114
2115         /* check options */
2116         while ((c = getopt(argc, argv, "rvV:a")) != -1) {
2117                 switch (c) {
2118                 case 'r':
2119                         flags |= ZFS_ITER_RECURSE;
2120                         break;
2121                 case 'v':
2122                         showversions = B_TRUE;
2123                         break;
2124                 case 'V':
2125                         if (zfs_prop_string_to_index(ZFS_PROP_VERSION,
2126                             optarg, &cb.cb_version) != 0) {
2127                                 (void) fprintf(stderr,
2128                                     gettext("invalid version %s\n"), optarg);
2129                                 usage(B_FALSE);
2130                         }
2131                         break;
2132                 case 'a':
2133                         all = B_TRUE;
2134                         break;
2135                 case '?':
2136                 default:
2137                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2138                             optopt);
2139                         usage(B_FALSE);
2140                 }
2141         }
2142
2143         argc -= optind;
2144         argv += optind;
2145
2146         if ((!all && !argc) && ((flags & ZFS_ITER_RECURSE) | cb.cb_version))
2147                 usage(B_FALSE);
2148         if (showversions && (flags & ZFS_ITER_RECURSE || all ||
2149             cb.cb_version || argc))
2150                 usage(B_FALSE);
2151         if ((all || argc) && (showversions))
2152                 usage(B_FALSE);
2153         if (all && argc)
2154                 usage(B_FALSE);
2155
2156         if (showversions) {
2157                 /* Show info on available versions. */
2158                 (void) printf(gettext("The following filesystem versions are "
2159                     "supported:\n\n"));
2160                 (void) printf(gettext("VER  DESCRIPTION\n"));
2161                 (void) printf("---  -----------------------------------------"
2162                     "---------------\n");
2163                 (void) printf(gettext(" 1   Initial ZFS filesystem version\n"));
2164                 (void) printf(gettext(" 2   Enhanced directory entries\n"));
2165                 (void) printf(gettext(" 3   Case insensitive and filesystem "
2166                     "user identifier (FUID)\n"));
2167                 (void) printf(gettext(" 4   userquota, groupquota "
2168                     "properties\n"));
2169                 (void) printf(gettext(" 5   System attributes\n"));
2170                 (void) printf(gettext("\nFor more information on a particular "
2171                     "version, including supported releases,\n"));
2172                 (void) printf("see the ZFS Administration Guide.\n\n");
2173                 ret = 0;
2174         } else if (argc || all) {
2175                 /* Upgrade filesystems */
2176                 if (cb.cb_version == 0)
2177                         cb.cb_version = ZPL_VERSION;
2178                 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_FILESYSTEM,
2179                     NULL, NULL, 0, upgrade_set_callback, &cb);
2180                 (void) printf(gettext("%llu filesystems upgraded\n"),
2181                     cb.cb_numupgraded);
2182                 if (cb.cb_numsamegraded) {
2183                         (void) printf(gettext("%llu filesystems already at "
2184                             "this version\n"),
2185                             cb.cb_numsamegraded);
2186                 }
2187                 if (cb.cb_numfailed != 0)
2188                         ret = 1;
2189         } else {
2190                 /* List old-version filesytems */
2191                 boolean_t found;
2192                 (void) printf(gettext("This system is currently running "
2193                     "ZFS filesystem version %llu.\n\n"), ZPL_VERSION);
2194
2195                 flags |= ZFS_ITER_RECURSE;
2196                 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
2197                     NULL, NULL, 0, upgrade_list_callback, &cb);
2198
2199                 found = cb.cb_foundone;
2200                 cb.cb_foundone = B_FALSE;
2201                 cb.cb_newer = B_TRUE;
2202
2203                 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
2204                     NULL, NULL, 0, upgrade_list_callback, &cb);
2205
2206                 if (!cb.cb_foundone && !found) {
2207                         (void) printf(gettext("All filesystems are "
2208                             "formatted with the current version.\n"));
2209                 }
2210         }
2211
2212         return (ret);
2213 }
2214
2215 /*
2216  * zfs userspace [-Hinp] [-o field[,...]] [-s field [-s field]...]
2217  *               [-S field [-S field]...] [-t type[,...]] filesystem | snapshot
2218  * zfs groupspace [-Hinp] [-o field[,...]] [-s field [-s field]...]
2219  *                [-S field [-S field]...] [-t type[,...]] filesystem | snapshot
2220  *
2221  *      -H      Scripted mode; elide headers and separate columns by tabs.
2222  *      -i      Translate SID to POSIX ID.
2223  *      -n      Print numeric ID instead of user/group name.
2224  *      -o      Control which fields to display.
2225  *      -p      Use exact (parsable) numeric output.
2226  *      -s      Specify sort columns, descending order.
2227  *      -S      Specify sort columns, ascending order.
2228  *      -t      Control which object types to display.
2229  *
2230  *      Displays space consumed by, and quotas on, each user in the specified
2231  *      filesystem or snapshot.
2232  */
2233
2234 /* us_field_types, us_field_hdr and us_field_names should be kept in sync */
2235 enum us_field_types {
2236         USFIELD_TYPE,
2237         USFIELD_NAME,
2238         USFIELD_USED,
2239         USFIELD_QUOTA
2240 };
2241 static char *us_field_hdr[] = { "TYPE", "NAME", "USED", "QUOTA" };
2242 static char *us_field_names[] = { "type", "name", "used", "quota" };
2243 #define USFIELD_LAST    (sizeof (us_field_names) / sizeof (char *))
2244
2245 #define USTYPE_PSX_GRP  (1 << 0)
2246 #define USTYPE_PSX_USR  (1 << 1)
2247 #define USTYPE_SMB_GRP  (1 << 2)
2248 #define USTYPE_SMB_USR  (1 << 3)
2249 #define USTYPE_ALL      \
2250         (USTYPE_PSX_GRP | USTYPE_PSX_USR | USTYPE_SMB_GRP | USTYPE_SMB_USR)
2251
2252 static int us_type_bits[] = {
2253         USTYPE_PSX_GRP,
2254         USTYPE_PSX_USR,
2255         USTYPE_SMB_GRP,
2256         USTYPE_SMB_USR,
2257         USTYPE_ALL
2258 };
2259 static char *us_type_names[] = { "posixgroup", "posixuser", "smbgroup",
2260         "smbuser", "all" };
2261
2262 typedef struct us_node {
2263         nvlist_t        *usn_nvl;
2264         uu_avl_node_t   usn_avlnode;
2265         uu_list_node_t  usn_listnode;
2266 } us_node_t;
2267
2268 typedef struct us_cbdata {
2269         nvlist_t        **cb_nvlp;
2270         uu_avl_pool_t   *cb_avl_pool;
2271         uu_avl_t        *cb_avl;
2272         boolean_t       cb_numname;
2273         boolean_t       cb_nicenum;
2274         boolean_t       cb_sid2posix;
2275         zfs_userquota_prop_t cb_prop;
2276         zfs_sort_column_t *cb_sortcol;
2277         size_t          cb_width[USFIELD_LAST];
2278 } us_cbdata_t;
2279
2280 static boolean_t us_populated = B_FALSE;
2281
2282 typedef struct {
2283         zfs_sort_column_t *si_sortcol;
2284         boolean_t       si_numname;
2285 } us_sort_info_t;
2286
2287 static int
2288 us_field_index(char *field)
2289 {
2290         int i;
2291
2292         for (i = 0; i < USFIELD_LAST; i++) {
2293                 if (strcmp(field, us_field_names[i]) == 0)
2294                         return (i);
2295         }
2296
2297         return (-1);
2298 }
2299
2300 static int
2301 us_compare(const void *larg, const void *rarg, void *unused)
2302 {
2303         const us_node_t *l = larg;
2304         const us_node_t *r = rarg;
2305         us_sort_info_t *si = (us_sort_info_t *)unused;
2306         zfs_sort_column_t *sortcol = si->si_sortcol;
2307         boolean_t numname = si->si_numname;
2308         nvlist_t *lnvl = l->usn_nvl;
2309         nvlist_t *rnvl = r->usn_nvl;
2310         int rc = 0;
2311         boolean_t lvb, rvb;
2312
2313         for (; sortcol != NULL; sortcol = sortcol->sc_next) {
2314                 char *lvstr = "";
2315                 char *rvstr = "";
2316                 uint32_t lv32 = 0;
2317                 uint32_t rv32 = 0;
2318                 uint64_t lv64 = 0;
2319                 uint64_t rv64 = 0;
2320                 zfs_prop_t prop = sortcol->sc_prop;
2321                 const char *propname = NULL;
2322                 boolean_t reverse = sortcol->sc_reverse;
2323
2324                 switch (prop) {
2325                 case ZFS_PROP_TYPE:
2326                         propname = "type";
2327                         (void) nvlist_lookup_uint32(lnvl, propname, &lv32);
2328                         (void) nvlist_lookup_uint32(rnvl, propname, &rv32);
2329                         if (rv32 != lv32)
2330                                 rc = (rv32 < lv32) ? 1 : -1;
2331                         break;
2332                 case ZFS_PROP_NAME:
2333                         propname = "name";
2334                         if (numname) {
2335                                 (void) nvlist_lookup_uint64(lnvl, propname,
2336                                     &lv64);
2337                                 (void) nvlist_lookup_uint64(rnvl, propname,
2338                                     &rv64);
2339                                 if (rv64 != lv64)
2340                                         rc = (rv64 < lv64) ? 1 : -1;
2341                         } else {
2342                                 (void) nvlist_lookup_string(lnvl, propname,
2343                                     &lvstr);
2344                                 (void) nvlist_lookup_string(rnvl, propname,
2345                                     &rvstr);
2346                                 rc = strcmp(lvstr, rvstr);
2347                         }
2348                         break;
2349                 case ZFS_PROP_USED:
2350                 case ZFS_PROP_QUOTA:
2351                         if (!us_populated)
2352                                 break;
2353                         if (prop == ZFS_PROP_USED)
2354                                 propname = "used";
2355                         else
2356                                 propname = "quota";
2357                         (void) nvlist_lookup_uint64(lnvl, propname, &lv64);
2358                         (void) nvlist_lookup_uint64(rnvl, propname, &rv64);
2359                         if (rv64 != lv64)
2360                                 rc = (rv64 < lv64) ? 1 : -1;
2361                         break;
2362                 }
2363
2364                 if (rc != 0) {
2365                         if (rc < 0)
2366                                 return (reverse ? 1 : -1);
2367                         else
2368                                 return (reverse ? -1 : 1);
2369                 }
2370         }
2371
2372         /*
2373          * If entries still seem to be the same, check if they are of the same
2374          * type (smbentity is added only if we are doing SID to POSIX ID
2375          * translation where we can have duplicate type/name combinations).
2376          */
2377         if (nvlist_lookup_boolean_value(lnvl, "smbentity", &lvb) == 0 &&
2378             nvlist_lookup_boolean_value(rnvl, "smbentity", &rvb) == 0 &&
2379             lvb != rvb)
2380                 return (lvb < rvb ? -1 : 1);
2381
2382         return (0);
2383 }
2384
2385 static inline const char *
2386 us_type2str(unsigned field_type)
2387 {
2388         switch (field_type) {
2389         case USTYPE_PSX_USR:
2390                 return ("POSIX User");
2391         case USTYPE_PSX_GRP:
2392                 return ("POSIX Group");
2393         case USTYPE_SMB_USR:
2394                 return ("SMB User");
2395         case USTYPE_SMB_GRP:
2396                 return ("SMB Group");
2397         default:
2398                 return ("Undefined");
2399         }
2400 }
2401
2402 static int
2403 userspace_cb(void *arg, const char *domain, uid_t rid, uint64_t space)
2404 {
2405         us_cbdata_t *cb = (us_cbdata_t *)arg;
2406         zfs_userquota_prop_t prop = cb->cb_prop;
2407         char *name = NULL;
2408         char *propname;
2409         char sizebuf[32];
2410         us_node_t *node;
2411         uu_avl_pool_t *avl_pool = cb->cb_avl_pool;
2412         uu_avl_t *avl = cb->cb_avl;
2413         uu_avl_index_t idx;
2414         nvlist_t *props;
2415         us_node_t *n;
2416         zfs_sort_column_t *sortcol = cb->cb_sortcol;
2417         unsigned type;
2418         const char *typestr;
2419         size_t namelen;
2420         size_t typelen;
2421         size_t sizelen;
2422         int typeidx, nameidx, sizeidx;
2423         us_sort_info_t sortinfo = { sortcol, cb->cb_numname };
2424         boolean_t smbentity = B_FALSE;
2425
2426         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
2427                 nomem();
2428         node = safe_malloc(sizeof (us_node_t));
2429         uu_avl_node_init(node, &node->usn_avlnode, avl_pool);
2430         node->usn_nvl = props;
2431
2432         if (domain != NULL && domain[0] != '\0') {
2433                 /* SMB */
2434                 char sid[ZFS_MAXNAMELEN + 32];
2435                 uid_t id;
2436 #ifdef sun
2437                 int err;
2438                 int flag = IDMAP_REQ_FLG_USE_CACHE;
2439 #endif
2440
2441                 smbentity = B_TRUE;
2442
2443                 (void) snprintf(sid, sizeof (sid), "%s-%u", domain, rid);
2444
2445                 if (prop == ZFS_PROP_GROUPUSED || prop == ZFS_PROP_GROUPQUOTA) {
2446                         type = USTYPE_SMB_GRP;
2447 #ifdef sun
2448                         err = sid_to_id(sid, B_FALSE, &id);
2449 #endif
2450                 } else {
2451                         type = USTYPE_SMB_USR;
2452 #ifdef sun
2453                         err = sid_to_id(sid, B_TRUE, &id);
2454 #endif
2455                 }
2456
2457 #ifdef sun
2458                 if (err == 0) {
2459                         rid = id;
2460                         if (!cb->cb_sid2posix) {
2461                                 if (type == USTYPE_SMB_USR) {
2462                                         (void) idmap_getwinnamebyuid(rid, flag,
2463                                             &name, NULL);
2464                                 } else {
2465                                         (void) idmap_getwinnamebygid(rid, flag,
2466                                             &name, NULL);
2467                                 }
2468                                 if (name == NULL)
2469                                         name = sid;
2470                         }
2471                 }
2472 #endif
2473         }
2474
2475         if (cb->cb_sid2posix || domain == NULL || domain[0] == '\0') {
2476                 /* POSIX or -i */
2477                 if (prop == ZFS_PROP_GROUPUSED || prop == ZFS_PROP_GROUPQUOTA) {
2478                         type = USTYPE_PSX_GRP;
2479                         if (!cb->cb_numname) {
2480                                 struct group *g;
2481
2482                                 if ((g = getgrgid(rid)) != NULL)
2483                                         name = g->gr_name;
2484                         }
2485                 } else {
2486                         type = USTYPE_PSX_USR;
2487                         if (!cb->cb_numname) {
2488                                 struct passwd *p;
2489
2490                                 if ((p = getpwuid(rid)) != NULL)
2491                                         name = p->pw_name;
2492                         }
2493                 }
2494         }
2495
2496         /*
2497          * Make sure that the type/name combination is unique when doing
2498          * SID to POSIX ID translation (hence changing the type from SMB to
2499          * POSIX).
2500          */
2501         if (cb->cb_sid2posix &&
2502             nvlist_add_boolean_value(props, "smbentity", smbentity) != 0)
2503                 nomem();
2504
2505         /* Calculate/update width of TYPE field */
2506         typestr = us_type2str(type);
2507         typelen = strlen(gettext(typestr));
2508         typeidx = us_field_index("type");
2509         if (typelen > cb->cb_width[typeidx])
2510                 cb->cb_width[typeidx] = typelen;
2511         if (nvlist_add_uint32(props, "type", type) != 0)
2512                 nomem();
2513
2514         /* Calculate/update width of NAME field */
2515         if ((cb->cb_numname && cb->cb_sid2posix) || name == NULL) {
2516                 if (nvlist_add_uint64(props, "name", rid) != 0)
2517                         nomem();
2518                 namelen = snprintf(NULL, 0, "%u", rid);
2519         } else {
2520                 if (nvlist_add_string(props, "name", name) != 0)
2521                         nomem();
2522                 namelen = strlen(name);
2523         }
2524         nameidx = us_field_index("name");
2525         if (namelen > cb->cb_width[nameidx])
2526                 cb->cb_width[nameidx] = namelen;
2527
2528         /*
2529          * Check if this type/name combination is in the list and update it;
2530          * otherwise add new node to the list.
2531          */
2532         if ((n = uu_avl_find(avl, node, &sortinfo, &idx)) == NULL) {
2533                 uu_avl_insert(avl, node, idx);
2534         } else {
2535                 nvlist_free(props);
2536                 free(node);
2537                 node = n;
2538                 props = node->usn_nvl;
2539         }
2540
2541         /* Calculate/update width of USED/QUOTA fields */
2542         if (cb->cb_nicenum)
2543                 zfs_nicenum(space, sizebuf, sizeof (sizebuf));
2544         else
2545                 (void) snprintf(sizebuf, sizeof (sizebuf), "%llu", space);
2546         sizelen = strlen(sizebuf);
2547         if (prop == ZFS_PROP_USERUSED || prop == ZFS_PROP_GROUPUSED) {
2548                 propname = "used";
2549                 if (!nvlist_exists(props, "quota"))
2550                         (void) nvlist_add_uint64(props, "quota", 0);
2551         } else {
2552                 propname = "quota";
2553                 if (!nvlist_exists(props, "used"))
2554                         (void) nvlist_add_uint64(props, "used", 0);
2555         }
2556         sizeidx = us_field_index(propname);
2557         if (sizelen > cb->cb_width[sizeidx])
2558                 cb->cb_width[sizeidx] = sizelen;
2559
2560         if (nvlist_add_uint64(props, propname, space) != 0)
2561                 nomem();
2562
2563         return (0);
2564 }
2565
2566 static void
2567 print_us_node(boolean_t scripted, boolean_t parsable, int *fields, int types,
2568     size_t *width, us_node_t *node)
2569 {
2570         nvlist_t *nvl = node->usn_nvl;
2571         char valstr[ZFS_MAXNAMELEN];
2572         boolean_t first = B_TRUE;
2573         int cfield = 0;
2574         int field;
2575         uint32_t ustype;
2576
2577         /* Check type */
2578         (void) nvlist_lookup_uint32(nvl, "type", &ustype);
2579         if (!(ustype & types))
2580                 return;
2581
2582         while ((field = fields[cfield]) != USFIELD_LAST) {
2583                 nvpair_t *nvp = NULL;
2584                 data_type_t type;
2585                 uint32_t val32;
2586                 uint64_t val64;
2587                 char *strval = NULL;
2588
2589                 while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
2590                         if (strcmp(nvpair_name(nvp),
2591                             us_field_names[field]) == 0)
2592                                 break;
2593                 }
2594
2595                 type = nvpair_type(nvp);
2596                 switch (type) {
2597                 case DATA_TYPE_UINT32:
2598                         (void) nvpair_value_uint32(nvp, &val32);
2599                         break;
2600                 case DATA_TYPE_UINT64:
2601                         (void) nvpair_value_uint64(nvp, &val64);
2602                         break;
2603                 case DATA_TYPE_STRING:
2604                         (void) nvpair_value_string(nvp, &strval);
2605                         break;
2606                 default:
2607                         (void) fprintf(stderr, "invalid data type\n");
2608                 }
2609
2610                 switch (field) {
2611                 case USFIELD_TYPE:
2612                         strval = (char *)us_type2str(val32);
2613                         break;
2614                 case USFIELD_NAME:
2615                         if (type == DATA_TYPE_UINT64) {
2616                                 (void) sprintf(valstr, "%llu", val64);
2617                                 strval = valstr;
2618                         }
2619                         break;
2620                 case USFIELD_USED:
2621                 case USFIELD_QUOTA:
2622                         if (type == DATA_TYPE_UINT64) {
2623                                 if (parsable) {
2624                                         (void) sprintf(valstr, "%llu", val64);
2625                                 } else {
2626                                         zfs_nicenum(val64, valstr,
2627                                             sizeof (valstr));
2628                                 }
2629                                 if (field == USFIELD_QUOTA &&
2630                                     strcmp(valstr, "0") == 0)
2631                                         strval = "none";
2632                                 else
2633                                         strval = valstr;
2634                         }
2635                         break;
2636                 }
2637
2638                 if (!first) {
2639                         if (scripted)
2640                                 (void) printf("\t");
2641                         else
2642                                 (void) printf("  ");
2643                 }
2644                 if (scripted)
2645                         (void) printf("%s", strval);
2646                 else if (field == USFIELD_TYPE || field == USFIELD_NAME)
2647                         (void) printf("%-*s", width[field], strval);
2648                 else
2649                         (void) printf("%*s", width[field], strval);
2650
2651                 first = B_FALSE;
2652                 cfield++;
2653         }
2654
2655         (void) printf("\n");
2656 }
2657
2658 static void
2659 print_us(boolean_t scripted, boolean_t parsable, int *fields, int types,
2660     size_t *width, boolean_t rmnode, uu_avl_t *avl)
2661 {
2662         us_node_t *node;
2663         const char *col;
2664         int cfield = 0;
2665         int field;
2666
2667         if (!scripted) {
2668                 boolean_t first = B_TRUE;
2669
2670                 while ((field = fields[cfield]) != USFIELD_LAST) {
2671                         col = gettext(us_field_hdr[field]);
2672                         if (field == USFIELD_TYPE || field == USFIELD_NAME) {
2673                                 (void) printf(first ? "%-*s" : "  %-*s",
2674                                     width[field], col);
2675                         } else {
2676                                 (void) printf(first ? "%*s" : "  %*s",
2677                                     width[field], col);
2678                         }
2679                         first = B_FALSE;
2680                         cfield++;
2681                 }
2682                 (void) printf("\n");
2683         }
2684
2685         for (node = uu_avl_first(avl); node; node = uu_avl_next(avl, node)) {
2686                 print_us_node(scripted, parsable, fields, types, width, node);
2687                 if (rmnode)
2688                         nvlist_free(node->usn_nvl);
2689         }
2690 }
2691
2692 static int
2693 zfs_do_userspace(int argc, char **argv)
2694 {
2695         zfs_handle_t *zhp;
2696         zfs_userquota_prop_t p;
2697
2698         uu_avl_pool_t *avl_pool;
2699         uu_avl_t *avl_tree;
2700         uu_avl_walk_t *walk;
2701         char *delim;
2702         char deffields[] = "type,name,used,quota";
2703         char *ofield = NULL;
2704         char *tfield = NULL;
2705         int cfield = 0;
2706         int fields[256];
2707         int i;
2708         boolean_t scripted = B_FALSE;
2709         boolean_t prtnum = B_FALSE;
2710         boolean_t parsable = B_FALSE;
2711         boolean_t sid2posix = B_FALSE;
2712         int ret = 0;
2713         int c;
2714         zfs_sort_column_t *sortcol = NULL;
2715         int types = USTYPE_PSX_USR | USTYPE_SMB_USR;
2716         us_cbdata_t cb;
2717         us_node_t *node;
2718         us_node_t *rmnode;
2719         uu_list_pool_t *listpool;
2720         uu_list_t *list;
2721         uu_avl_index_t idx = 0;
2722         uu_list_index_t idx2 = 0;
2723
2724         if (argc < 2)
2725                 usage(B_FALSE);
2726
2727         if (strcmp(argv[0], "groupspace") == 0)
2728                 /* Toggle default group types */
2729                 types = USTYPE_PSX_GRP | USTYPE_SMB_GRP;
2730
2731         while ((c = getopt(argc, argv, "nHpo:s:S:t:i")) != -1) {
2732                 switch (c) {
2733                 case 'n':
2734                         prtnum = B_TRUE;
2735                         break;
2736                 case 'H':
2737                         scripted = B_TRUE;
2738                         break;
2739                 case 'p':
2740                         parsable = B_TRUE;
2741                         break;
2742                 case 'o':
2743                         ofield = optarg;
2744                         break;
2745                 case 's':
2746                 case 'S':
2747                         if (zfs_add_sort_column(&sortcol, optarg,
2748                             c == 's' ? B_FALSE : B_TRUE) != 0) {
2749                                 (void) fprintf(stderr,
2750                                     gettext("invalid field '%s'\n"), optarg);
2751                                 usage(B_FALSE);
2752                         }
2753                         break;
2754                 case 't':
2755                         tfield = optarg;
2756                         break;
2757                 case 'i':
2758                         sid2posix = B_TRUE;
2759                         break;
2760                 case ':':
2761                         (void) fprintf(stderr, gettext("missing argument for "
2762                             "'%c' option\n"), optopt);
2763                         usage(B_FALSE);
2764                         break;
2765                 case '?':
2766                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2767                             optopt);
2768                         usage(B_FALSE);
2769                 }
2770         }
2771
2772         argc -= optind;
2773         argv += optind;
2774
2775         if (argc < 1) {
2776                 (void) fprintf(stderr, gettext("missing dataset name\n"));
2777                 usage(B_FALSE);
2778         }
2779         if (argc > 1) {
2780                 (void) fprintf(stderr, gettext("too many arguments\n"));
2781                 usage(B_FALSE);
2782         }
2783
2784         /* Use default output fields if not specified using -o */
2785         if (ofield == NULL)
2786                 ofield = deffields;
2787         do {
2788                 if ((delim = strchr(ofield, ',')) != NULL)
2789                         *delim = '\0';
2790                 if ((fields[cfield++] = us_field_index(ofield)) == -1) {
2791                         (void) fprintf(stderr, gettext("invalid type '%s' "
2792                             "for -o option\n"), ofield);
2793                         return (-1);
2794                 }
2795                 if (delim != NULL)
2796                         ofield = delim + 1;
2797         } while (delim != NULL);
2798         fields[cfield] = USFIELD_LAST;
2799
2800         /* Override output types (-t option) */
2801         if (tfield != NULL) {
2802                 types = 0;
2803
2804                 do {
2805                         boolean_t found = B_FALSE;
2806
2807                         if ((delim = strchr(tfield, ',')) != NULL)
2808                                 *delim = '\0';
2809                         for (i = 0; i < sizeof (us_type_bits) / sizeof (int);
2810                             i++) {
2811                                 if (strcmp(tfield, us_type_names[i]) == 0) {
2812                                         found = B_TRUE;
2813                                         types |= us_type_bits[i];
2814                                         break;
2815                                 }
2816                         }
2817                         if (!found) {
2818                                 (void) fprintf(stderr, gettext("invalid type "
2819                                     "'%s' for -t option\n"), tfield);
2820                                 return (-1);
2821                         }
2822                         if (delim != NULL)
2823                                 tfield = delim + 1;
2824                 } while (delim != NULL);
2825         }
2826
2827         if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL)
2828                 return (1);
2829
2830         if ((avl_pool = uu_avl_pool_create("us_avl_pool", sizeof (us_node_t),
2831             offsetof(us_node_t, usn_avlnode), us_compare, UU_DEFAULT)) == NULL)
2832                 nomem();
2833         if ((avl_tree = uu_avl_create(avl_pool, NULL, UU_DEFAULT)) == NULL)
2834                 nomem();
2835
2836         /* Always add default sorting columns */
2837         (void) zfs_add_sort_column(&sortcol, "type", B_FALSE);
2838         (void) zfs_add_sort_column(&sortcol, "name", B_FALSE);
2839
2840         cb.cb_sortcol = sortcol;
2841         cb.cb_numname = prtnum;
2842         cb.cb_nicenum = !parsable;
2843         cb.cb_avl_pool = avl_pool;
2844         cb.cb_avl = avl_tree;
2845         cb.cb_sid2posix = sid2posix;
2846
2847         for (i = 0; i < USFIELD_LAST; i++)
2848                 cb.cb_width[i] = strlen(gettext(us_field_hdr[i]));
2849
2850         for (p = 0; p < ZFS_NUM_USERQUOTA_PROPS; p++) {
2851                 if (((p == ZFS_PROP_USERUSED || p == ZFS_PROP_USERQUOTA) &&
2852                     !(types & (USTYPE_PSX_USR | USTYPE_SMB_USR))) ||
2853                     ((p == ZFS_PROP_GROUPUSED || p == ZFS_PROP_GROUPQUOTA) &&
2854                     !(types & (USTYPE_PSX_GRP | USTYPE_SMB_GRP))))
2855                         continue;
2856                 cb.cb_prop = p;
2857                 if ((ret = zfs_userspace(zhp, p, userspace_cb, &cb)) != 0)
2858                         return (ret);
2859         }
2860
2861         /* Sort the list */
2862         if ((node = uu_avl_first(avl_tree)) == NULL)
2863                 return (0);
2864
2865         us_populated = B_TRUE;
2866
2867         listpool = uu_list_pool_create("tmplist", sizeof (us_node_t),
2868             offsetof(us_node_t, usn_listnode), NULL, UU_DEFAULT);
2869         list = uu_list_create(listpool, NULL, UU_DEFAULT);
2870         uu_list_node_init(node, &node->usn_listnode, listpool);
2871
2872         while (node != NULL) {
2873                 rmnode = node;
2874                 node = uu_avl_next(avl_tree, node);
2875                 uu_avl_remove(avl_tree, rmnode);
2876                 if (uu_list_find(list, rmnode, NULL, &idx2) == NULL)
2877                         uu_list_insert(list, rmnode, idx2);
2878         }
2879
2880         for (node = uu_list_first(list); node != NULL;
2881             node = uu_list_next(list, node)) {
2882                 us_sort_info_t sortinfo = { sortcol, cb.cb_numname };
2883
2884                 if (uu_avl_find(avl_tree, node, &sortinfo, &idx) == NULL)
2885                         uu_avl_insert(avl_tree, node, idx);
2886         }
2887
2888         uu_list_destroy(list);
2889         uu_list_pool_destroy(listpool);
2890
2891         /* Print and free node nvlist memory */
2892         print_us(scripted, parsable, fields, types, cb.cb_width, B_TRUE,
2893             cb.cb_avl);
2894
2895         zfs_free_sort_columns(sortcol);
2896
2897         /* Clean up the AVL tree */
2898         if ((walk = uu_avl_walk_start(cb.cb_avl, UU_WALK_ROBUST)) == NULL)
2899                 nomem();
2900
2901         while ((node = uu_avl_walk_next(walk)) != NULL) {
2902                 uu_avl_remove(cb.cb_avl, node);
2903                 free(node);
2904         }
2905
2906         uu_avl_walk_end(walk);
2907         uu_avl_destroy(avl_tree);
2908         uu_avl_pool_destroy(avl_pool);
2909
2910         return (ret);
2911 }
2912
2913 /*
2914  * list [-Hp][-r|-d max] [-o property[,...]] [-s property] ... [-S property] ...
2915  *      [-t type[,...]] [filesystem|volume|snapshot] ...
2916  *
2917  *      -H      Scripted mode; elide headers and separate columns by tabs.
2918  *      -p      Display values in parsable (literal) format.
2919  *      -r      Recurse over all children.
2920  *      -d      Limit recursion by depth.
2921  *      -o      Control which fields to display.
2922  *      -s      Specify sort columns, descending order.
2923  *      -S      Specify sort columns, ascending order.
2924  *      -t      Control which object types to display.
2925  *
2926  * When given no arguments, list all filesystems in the system.
2927  * Otherwise, list the specified datasets, optionally recursing down them if
2928  * '-r' is specified.
2929  */
2930 typedef struct list_cbdata {
2931         boolean_t       cb_first;
2932         boolean_t       cb_literal;
2933         boolean_t       cb_scripted;
2934         zprop_list_t    *cb_proplist;
2935 } list_cbdata_t;
2936
2937 /*
2938  * Given a list of columns to display, output appropriate headers for each one.
2939  */
2940 static void
2941 print_header(list_cbdata_t *cb)
2942 {
2943         zprop_list_t *pl = cb->cb_proplist;
2944         char headerbuf[ZFS_MAXPROPLEN];
2945         const char *header;
2946         int i;
2947         boolean_t first = B_TRUE;
2948         boolean_t right_justify;
2949
2950         for (; pl != NULL; pl = pl->pl_next) {
2951                 if (!first) {
2952                         (void) printf("  ");
2953                 } else {
2954                         first = B_FALSE;
2955                 }
2956
2957                 right_justify = B_FALSE;
2958                 if (pl->pl_prop != ZPROP_INVAL) {
2959                         header = zfs_prop_column_name(pl->pl_prop);
2960                         right_justify = zfs_prop_align_right(pl->pl_prop);
2961                 } else {
2962                         for (i = 0; pl->pl_user_prop[i] != '\0'; i++)
2963                                 headerbuf[i] = toupper(pl->pl_user_prop[i]);
2964                         headerbuf[i] = '\0';
2965                         header = headerbuf;
2966                 }
2967
2968                 if (pl->pl_next == NULL && !right_justify)
2969                         (void) printf("%s", header);
2970                 else if (right_justify)
2971                         (void) printf("%*s", pl->pl_width, header);
2972                 else
2973                         (void) printf("%-*s", pl->pl_width, header);
2974         }
2975
2976         (void) printf("\n");
2977 }
2978
2979 /*
2980  * Given a dataset and a list of fields, print out all the properties according
2981  * to the described layout.
2982  */
2983 static void
2984 print_dataset(zfs_handle_t *zhp, list_cbdata_t *cb)
2985 {
2986         zprop_list_t *pl = cb->cb_proplist;
2987         boolean_t first = B_TRUE;
2988         char property[ZFS_MAXPROPLEN];
2989         nvlist_t *userprops = zfs_get_user_props(zhp);
2990         nvlist_t *propval;
2991         char *propstr;
2992         boolean_t right_justify;
2993
2994         for (; pl != NULL; pl = pl->pl_next) {
2995                 if (!first) {
2996                         if (cb->cb_scripted)
2997                                 (void) printf("\t");
2998                         else
2999                                 (void) printf("  ");
3000                 } else {
3001                         first = B_FALSE;
3002                 }
3003
3004                 if (pl->pl_prop == ZFS_PROP_NAME) {
3005                         (void) strlcpy(property, zfs_get_name(zhp),
3006                             sizeof(property));
3007                         propstr = property;
3008                         right_justify = zfs_prop_align_right(pl->pl_prop);
3009                 } else if (pl->pl_prop != ZPROP_INVAL) {
3010                         if (zfs_prop_get(zhp, pl->pl_prop, property,
3011                             sizeof (property), NULL, NULL, 0,
3012                             cb->cb_literal) != 0)
3013                                 propstr = "-";
3014                         else
3015                                 propstr = property;
3016                         right_justify = zfs_prop_align_right(pl->pl_prop);
3017                 } else if (zfs_prop_userquota(pl->pl_user_prop)) {
3018                         if (zfs_prop_get_userquota(zhp, pl->pl_user_prop,
3019                             property, sizeof (property), cb->cb_literal) != 0)
3020                                 propstr = "-";
3021                         else
3022                                 propstr = property;
3023                         right_justify = B_TRUE;
3024                 } else if (zfs_prop_written(pl->pl_user_prop)) {
3025                         if (zfs_prop_get_written(zhp, pl->pl_user_prop,
3026                             property, sizeof (property), cb->cb_literal) != 0)
3027                                 propstr = "-";
3028                         else
3029                                 propstr = property;
3030                         right_justify = B_TRUE;
3031                 } else {
3032                         if (nvlist_lookup_nvlist(userprops,
3033                             pl->pl_user_prop, &propval) != 0)
3034                                 propstr = "-";
3035                         else
3036                                 verify(nvlist_lookup_string(propval,
3037                                     ZPROP_VALUE, &propstr) == 0);
3038                         right_justify = B_FALSE;
3039                 }
3040
3041                 /*
3042                  * If this is being called in scripted mode, or if this is the
3043                  * last column and it is left-justified, don't include a width
3044                  * format specifier.
3045                  */
3046                 if (cb->cb_scripted || (pl->pl_next == NULL && !right_justify))
3047                         (void) printf("%s", propstr);
3048                 else if (right_justify)
3049                         (void) printf("%*s", pl->pl_width, propstr);
3050                 else
3051                         (void) printf("%-*s", pl->pl_width, propstr);
3052         }
3053
3054         (void) printf("\n");
3055 }
3056
3057 /*
3058  * Generic callback function to list a dataset or snapshot.
3059  */
3060 static int
3061 list_callback(zfs_handle_t *zhp, void *data)
3062 {
3063         list_cbdata_t *cbp = data;
3064
3065         if (cbp->cb_first) {
3066                 if (!cbp->cb_scripted)
3067                         print_header(cbp);
3068                 cbp->cb_first = B_FALSE;
3069         }
3070
3071         print_dataset(zhp, cbp);
3072
3073         return (0);
3074 }
3075
3076 static int
3077 zfs_do_list(int argc, char **argv)
3078 {
3079         int c;
3080         static char default_fields[] =
3081             "name,used,available,referenced,mountpoint";
3082         int types = ZFS_TYPE_DATASET;
3083         boolean_t types_specified = B_FALSE;
3084         char *fields = NULL;
3085         list_cbdata_t cb = { 0 };
3086         char *value;
3087         int limit = 0;
3088         int ret = 0;
3089         zfs_sort_column_t *sortcol = NULL;
3090         int flags = ZFS_ITER_PROP_LISTSNAPS | ZFS_ITER_ARGS_CAN_BE_PATHS;
3091
3092         /* check options */
3093         while ((c = getopt(argc, argv, "HS:d:o:prs:t:")) != -1) {
3094                 switch (c) {
3095                 case 'o':
3096                         fields = optarg;
3097                         break;
3098                 case 'p':
3099                         cb.cb_literal = B_TRUE;
3100                         flags |= ZFS_ITER_LITERAL_PROPS;
3101                         break;
3102                 case 'd':
3103                         limit = parse_depth(optarg, &flags);
3104                         break;
3105                 case 'r':
3106                         flags |= ZFS_ITER_RECURSE;
3107                         break;
3108                 case 'H':
3109                         cb.cb_scripted = B_TRUE;
3110                         break;
3111                 case 's':
3112                         if (zfs_add_sort_column(&sortcol, optarg,
3113                             B_FALSE) != 0) {
3114                                 (void) fprintf(stderr,
3115                                     gettext("invalid property '%s'\n"), optarg);
3116                                 usage(B_FALSE);
3117                         }
3118                         break;
3119                 case 'S':
3120                         if (zfs_add_sort_column(&sortcol, optarg,
3121                             B_TRUE) != 0) {
3122                                 (void) fprintf(stderr,
3123                                     gettext("invalid property '%s'\n"), optarg);
3124                                 usage(B_FALSE);
3125                         }
3126                         break;
3127                 case 't':
3128                         types = 0;
3129                         types_specified = B_TRUE;
3130                         flags &= ~ZFS_ITER_PROP_LISTSNAPS;
3131                         while (*optarg != '\0') {
3132                                 static char *type_subopts[] = { "filesystem",
3133                                     "volume", "snapshot", "snap", "bookmark",
3134                                     "all", NULL };
3135
3136                                 switch (getsubopt(&optarg, type_subopts,
3137                                     &value)) {
3138                                 case 0:
3139                                         types |= ZFS_TYPE_FILESYSTEM;
3140                                         break;
3141                                 case 1:
3142                                         types |= ZFS_TYPE_VOLUME;
3143                                         break;
3144                                 case 2:
3145                                 case 3:
3146                                         types |= ZFS_TYPE_SNAPSHOT;
3147                                         break;
3148                                 case 4:
3149                                         types |= ZFS_TYPE_BOOKMARK;
3150                                         break;
3151                                 case 5:
3152                                         types = ZFS_TYPE_DATASET |
3153                                             ZFS_TYPE_BOOKMARK;
3154                                         break;
3155                                 default:
3156                                         (void) fprintf(stderr,
3157                                             gettext("invalid type '%s'\n"),
3158                                             value);
3159                                         usage(B_FALSE);
3160                                 }
3161                         }
3162                         break;
3163                 case ':':
3164                         (void) fprintf(stderr, gettext("missing argument for "
3165                             "'%c' option\n"), optopt);
3166                         usage(B_FALSE);
3167                         break;
3168                 case '?':
3169                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3170                             optopt);
3171                         usage(B_FALSE);
3172                 }
3173         }
3174
3175         argc -= optind;
3176         argv += optind;
3177
3178         if (fields == NULL)
3179                 fields = default_fields;
3180
3181         /*
3182          * If we are only going to list snapshot names and sort by name,
3183          * then we can use faster version.
3184          */
3185         if (strcmp(fields, "name") == 0 && zfs_sort_only_by_name(sortcol))
3186                 flags |= ZFS_ITER_SIMPLE;
3187
3188         /*
3189          * If "-o space" and no types were specified, don't display snapshots.
3190          */
3191         if (strcmp(fields, "space") == 0 && types_specified == B_FALSE)
3192                 types &= ~ZFS_TYPE_SNAPSHOT;
3193
3194         /*
3195          * If the user specifies '-o all', the zprop_get_list() doesn't
3196          * normally include the name of the dataset.  For 'zfs list', we always
3197          * want this property to be first.
3198          */
3199         if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
3200             != 0)
3201                 usage(B_FALSE);
3202
3203         cb.cb_first = B_TRUE;
3204
3205         ret = zfs_for_each(argc, argv, flags, types, sortcol, &cb.cb_proplist,
3206             limit, list_callback, &cb);
3207
3208         zprop_free_list(cb.cb_proplist);
3209         zfs_free_sort_columns(sortcol);
3210
3211         if (ret == 0 && cb.cb_first && !cb.cb_scripted)
3212                 (void) printf(gettext("no datasets available\n"));
3213
3214         return (ret);
3215 }
3216
3217 /*
3218  * zfs rename [-f] <fs | snap | vol> <fs | snap | vol>
3219  * zfs rename [-f] -p <fs | vol> <fs | vol>
3220  * zfs rename -r <snap> <snap>
3221  * zfs rename -u [-p] <fs> <fs>
3222  *
3223  * Renames the given dataset to another of the same type.
3224  *
3225  * The '-p' flag creates all the non-existing ancestors of the target first.
3226  */
3227 /* ARGSUSED */
3228 static int
3229 zfs_do_rename(int argc, char **argv)
3230 {
3231         zfs_handle_t *zhp;
3232         renameflags_t flags = { 0 };
3233         int c;
3234         int ret = 0;
3235         int types;
3236         boolean_t parents = B_FALSE;
3237         char *snapshot = NULL;
3238
3239         /* check options */
3240         while ((c = getopt(argc, argv, "fpru")) != -1) {
3241                 switch (c) {
3242                 case 'p':
3243                         parents = B_TRUE;
3244                         break;
3245                 case 'r':
3246                         flags.recurse = B_TRUE;
3247                         break;
3248                 case 'u':
3249                         flags.nounmount = B_TRUE;
3250                         break;
3251                 case 'f':
3252                         flags.forceunmount = B_TRUE;
3253                         break;
3254                 case '?':
3255                 default:
3256                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3257                             optopt);
3258                         usage(B_FALSE);
3259                 }
3260         }
3261
3262         argc -= optind;
3263         argv += optind;
3264
3265         /* check number of arguments */
3266         if (argc < 1) {
3267                 (void) fprintf(stderr, gettext("missing source dataset "
3268                     "argument\n"));
3269                 usage(B_FALSE);
3270         }
3271         if (argc < 2) {
3272                 (void) fprintf(stderr, gettext("missing target dataset "
3273                     "argument\n"));
3274                 usage(B_FALSE);
3275         }
3276         if (argc > 2) {
3277                 (void) fprintf(stderr, gettext("too many arguments\n"));
3278                 usage(B_FALSE);
3279         }
3280
3281         if (flags.recurse && parents) {
3282                 (void) fprintf(stderr, gettext("-p and -r options are mutually "
3283                     "exclusive\n"));
3284                 usage(B_FALSE);
3285         }
3286
3287         if (flags.recurse && strchr(argv[0], '@') == 0) {
3288                 (void) fprintf(stderr, gettext("source dataset for recursive "
3289                     "rename must be a snapshot\n"));
3290                 usage(B_FALSE);
3291         }
3292
3293         if (flags.nounmount && parents) {
3294                 (void) fprintf(stderr, gettext("-u and -p options are mutually "
3295                     "exclusive\n"));
3296                 usage(B_FALSE);
3297         }
3298
3299         if (flags.nounmount)
3300                 types = ZFS_TYPE_FILESYSTEM;
3301         else if (parents)
3302                 types = ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME;
3303         else
3304                 types = ZFS_TYPE_DATASET;
3305
3306         if (flags.recurse) {
3307                 /*
3308                  * When we do recursive rename we are fine when the given
3309                  * snapshot for the given dataset doesn't exist - it can
3310                  * still exists below.
3311                  */
3312
3313                 snapshot = strchr(argv[0], '@');
3314                 assert(snapshot != NULL);
3315                 *snapshot = '\0';
3316                 snapshot++;
3317         }
3318
3319         if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL)
3320                 return (1);
3321
3322         /* If we were asked and the name looks good, try to create ancestors. */
3323         if (parents && zfs_name_valid(argv[1], zfs_get_type(zhp)) &&
3324             zfs_create_ancestors(g_zfs, argv[1]) != 0) {
3325                 zfs_close(zhp);
3326                 return (1);
3327         }
3328
3329         ret = (zfs_rename(zhp, snapshot, argv[1], flags) != 0);
3330
3331         zfs_close(zhp);
3332         return (ret);
3333 }
3334
3335 /*
3336  * zfs promote <fs>
3337  *
3338  * Promotes the given clone fs to be the parent
3339  */
3340 /* ARGSUSED */
3341 static int
3342 zfs_do_promote(int argc, char **argv)
3343 {
3344         zfs_handle_t *zhp;
3345         int ret = 0;
3346
3347         /* check options */
3348         if (argc > 1 && argv[1][0] == '-') {
3349                 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3350                     argv[1][1]);
3351                 usage(B_FALSE);
3352         }
3353
3354         /* check number of arguments */
3355         if (argc < 2) {
3356                 (void) fprintf(stderr, gettext("missing clone filesystem"
3357                     " argument\n"));
3358                 usage(B_FALSE);
3359         }
3360         if (argc > 2) {
3361                 (void) fprintf(stderr, gettext("too many arguments\n"));
3362                 usage(B_FALSE);
3363         }
3364
3365         zhp = zfs_open(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3366         if (zhp == NULL)
3367                 return (1);
3368
3369         ret = (zfs_promote(zhp) != 0);
3370
3371
3372         zfs_close(zhp);
3373         return (ret);
3374 }
3375
3376 /*
3377  * zfs rollback [-rRf] <snapshot>
3378  *
3379  *      -r      Delete any intervening snapshots before doing rollback
3380  *      -R      Delete any snapshots and their clones
3381  *      -f      ignored for backwards compatability
3382  *
3383  * Given a filesystem, rollback to a specific snapshot, discarding any changes
3384  * since then and making it the active dataset.  If more recent snapshots exist,
3385  * the command will complain unless the '-r' flag is given.
3386  */
3387 typedef struct rollback_cbdata {
3388         uint64_t        cb_create;
3389         boolean_t       cb_first;
3390         int             cb_doclones;
3391         char            *cb_target;
3392         int             cb_error;
3393         boolean_t       cb_recurse;
3394 } rollback_cbdata_t;
3395
3396 static int
3397 rollback_check_dependent(zfs_handle_t *zhp, void *data)
3398 {
3399         rollback_cbdata_t *cbp = data;
3400
3401         if (cbp->cb_first && cbp->cb_recurse) {
3402                 (void) fprintf(stderr, gettext("cannot rollback to "
3403                     "'%s': clones of previous snapshots exist\n"),
3404                     cbp->cb_target);
3405                 (void) fprintf(stderr, gettext("use '-R' to "
3406                     "force deletion of the following clones and "
3407                     "dependents:\n"));
3408                 cbp->cb_first = 0;
3409                 cbp->cb_error = 1;
3410         }
3411
3412         (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
3413
3414         zfs_close(zhp);
3415         return (0);
3416 }
3417
3418 /*
3419  * Report any snapshots more recent than the one specified.  Used when '-r' is
3420  * not specified.  We reuse this same callback for the snapshot dependents - if
3421  * 'cb_dependent' is set, then this is a dependent and we should report it
3422  * without checking the transaction group.
3423  */
3424 static int
3425 rollback_check(zfs_handle_t *zhp, void *data)
3426 {
3427         rollback_cbdata_t *cbp = data;
3428
3429         if (cbp->cb_doclones) {
3430                 zfs_close(zhp);
3431                 return (0);
3432         }
3433
3434         if (zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > cbp->cb_create) {
3435                 if (cbp->cb_first && !cbp->cb_recurse) {
3436                         (void) fprintf(stderr, gettext("cannot "
3437                             "rollback to '%s': more recent snapshots "
3438                             "or bookmarks exist\n"),
3439                             cbp->cb_target);
3440                         (void) fprintf(stderr, gettext("use '-r' to "
3441                             "force deletion of the following "
3442                             "snapshots and bookmarks:\n"));
3443                         cbp->cb_first = 0;
3444                         cbp->cb_error = 1;
3445                 }
3446
3447                 if (cbp->cb_recurse) {
3448                         if (zfs_iter_dependents(zhp, B_TRUE,
3449                             rollback_check_dependent, cbp) != 0) {
3450                                 zfs_close(zhp);
3451                                 return (-1);
3452                         }
3453                 } else {
3454                         (void) fprintf(stderr, "%s\n",
3455                             zfs_get_name(zhp));
3456                 }
3457         }
3458         zfs_close(zhp);
3459         return (0);
3460 }
3461
3462 static int
3463 zfs_do_rollback(int argc, char **argv)
3464 {
3465         int ret = 0;
3466         int c;
3467         boolean_t force = B_FALSE;
3468         rollback_cbdata_t cb = { 0 };
3469         zfs_handle_t *zhp, *snap;
3470         char parentname[ZFS_MAXNAMELEN];
3471         char *delim;
3472
3473         /* check options */
3474         while ((c = getopt(argc, argv, "rRf")) != -1) {
3475                 switch (c) {
3476                 case 'r':
3477                         cb.cb_recurse = 1;
3478                         break;
3479                 case 'R':
3480                         cb.cb_recurse = 1;
3481                         cb.cb_doclones = 1;
3482                         break;
3483                 case 'f':
3484                         force = B_TRUE;
3485                         break;
3486                 case '?':
3487                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3488                             optopt);
3489                         usage(B_FALSE);
3490                 }
3491         }
3492
3493         argc -= optind;
3494         argv += optind;
3495
3496         /* check number of arguments */
3497         if (argc < 1) {
3498                 (void) fprintf(stderr, gettext("missing dataset argument\n"));
3499                 usage(B_FALSE);
3500         }
3501         if (argc > 1) {
3502                 (void) fprintf(stderr, gettext("too many arguments\n"));
3503                 usage(B_FALSE);
3504         }
3505
3506         /* open the snapshot */
3507         if ((snap = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
3508                 return (1);
3509
3510         /* open the parent dataset */
3511         (void) strlcpy(parentname, argv[0], sizeof (parentname));
3512         verify((delim = strrchr(parentname, '@')) != NULL);
3513         *delim = '\0';
3514         if ((zhp = zfs_open(g_zfs, parentname, ZFS_TYPE_DATASET)) == NULL) {
3515                 zfs_close(snap);
3516                 return (1);
3517         }
3518
3519         /*
3520          * Check for more recent snapshots and/or clones based on the presence
3521          * of '-r' and '-R'.
3522          */
3523         cb.cb_target = argv[0];
3524         cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG);
3525         cb.cb_first = B_TRUE;
3526         cb.cb_error = 0;
3527         if ((ret = zfs_iter_snapshots(zhp, B_FALSE, rollback_check, &cb)) != 0)
3528                 goto out;
3529         if ((ret = zfs_iter_bookmarks(zhp, rollback_check, &cb)) != 0)
3530                 goto out;
3531
3532         if ((ret = cb.cb_error) != 0)
3533                 goto out;
3534
3535         /*
3536          * Rollback parent to the given snapshot.
3537          */
3538         ret = zfs_rollback(zhp, snap, force);
3539
3540 out:
3541         zfs_close(snap);
3542         zfs_close(zhp);
3543
3544         if (ret == 0)
3545                 return (0);
3546         else
3547                 return (1);
3548 }
3549
3550 /*
3551  * zfs set property=value ... { fs | snap | vol } ...
3552  *
3553  * Sets the given properties for all datasets specified on the command line.
3554  */
3555
3556 static int
3557 set_callback(zfs_handle_t *zhp, void *data)
3558 {
3559         nvlist_t *props = data;
3560
3561         if (zfs_prop_set_list(zhp, props) != 0) {
3562                 switch (libzfs_errno(g_zfs)) {
3563                 case EZFS_MOUNTFAILED:
3564                         (void) fprintf(stderr, gettext("property may be set "
3565                             "but unable to remount filesystem\n"));
3566                         break;
3567                 case EZFS_SHARENFSFAILED:
3568                         (void) fprintf(stderr, gettext("property may be set "
3569                             "but unable to reshare filesystem\n"));
3570                         break;
3571                 }
3572                 return (1);
3573         }
3574         return (0);
3575 }
3576
3577 static int
3578 zfs_do_set(int argc, char **argv)
3579 {
3580         nvlist_t *props = NULL;
3581         int ds_start = -1; /* argv idx of first dataset arg */
3582         int i, ret = 0;
3583
3584         /* check for options */
3585         if (argc > 1 && argv[1][0] == '-') {
3586                 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3587                     argv[1][1]);
3588                 usage(B_FALSE);
3589         }
3590
3591         /* check number of arguments */
3592         if (argc < 2) {
3593                 (void) fprintf(stderr, gettext("missing arguments\n"));
3594                 usage(B_FALSE);
3595         }
3596         if (argc < 3) {
3597                 if (strchr(argv[1], '=') == NULL) {
3598                         (void) fprintf(stderr, gettext("missing property=value "
3599                             "argument(s)\n"));
3600                 } else {
3601                         (void) fprintf(stderr, gettext("missing dataset "
3602                             "name(s)\n"));
3603                 }
3604                 usage(B_FALSE);
3605         }
3606
3607         /* validate argument order:  prop=val args followed by dataset args */
3608         for (i = 1; i < argc; i++) {
3609                 if (strchr(argv[i], '=') != NULL) {
3610                         if (ds_start > 0) {
3611                                 /* out-of-order prop=val argument */
3612                                 (void) fprintf(stderr, gettext("invalid "
3613                                     "argument order\n"), i);
3614                                 usage(B_FALSE);
3615                         }
3616                 } else if (ds_start < 0) {
3617                         ds_start = i;
3618                 }
3619         }
3620         if (ds_start < 0) {
3621                 (void) fprintf(stderr, gettext("missing dataset name(s)\n"));
3622                 usage(B_FALSE);
3623         }
3624
3625         /* Populate a list of property settings */
3626         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
3627                 nomem();
3628         for (i = 1; i < ds_start; i++) {
3629                 if ((ret = parseprop(props, argv[i])) != 0)
3630                         goto error;
3631         }
3632
3633         ret = zfs_for_each(argc - ds_start, argv + ds_start, 0,
3634             ZFS_TYPE_DATASET, NULL, NULL, 0, set_callback, props);
3635
3636 error:
3637         nvlist_free(props);
3638         return (ret);
3639 }
3640
3641 typedef struct snap_cbdata {
3642         nvlist_t *sd_nvl;
3643         boolean_t sd_recursive;
3644         const char *sd_snapname;
3645 } snap_cbdata_t;
3646
3647 static int
3648 zfs_snapshot_cb(zfs_handle_t *zhp, void *arg)
3649 {
3650         snap_cbdata_t *sd = arg;
3651         char *name;
3652         int rv = 0;
3653         int error;
3654
3655         if (sd->sd_recursive &&
3656             zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) != 0) {
3657                 zfs_close(zhp);
3658                 return (0);
3659         }
3660
3661         error = asprintf(&name, "%s@%s", zfs_get_name(zhp), sd->sd_snapname);
3662         if (error == -1)
3663                 nomem();
3664         fnvlist_add_boolean(sd->sd_nvl, name);
3665         free(name);
3666
3667         if (sd->sd_recursive)
3668                 rv = zfs_iter_filesystems(zhp, zfs_snapshot_cb, sd);
3669         zfs_close(zhp);
3670         return (rv);
3671 }
3672
3673 /*
3674  * zfs snapshot [-r] [-o prop=value] ... <fs@snap>
3675  *
3676  * Creates a snapshot with the given name.  While functionally equivalent to
3677  * 'zfs create', it is a separate command to differentiate intent.
3678  */
3679 static int
3680 zfs_do_snapshot(int argc, char **argv)
3681 {
3682         int ret = 0;
3683         int c;
3684         nvlist_t *props;
3685         snap_cbdata_t sd = { 0 };
3686         boolean_t multiple_snaps = B_FALSE;
3687
3688         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
3689                 nomem();
3690         if (nvlist_alloc(&sd.sd_nvl, NV_UNIQUE_NAME, 0) != 0)
3691                 nomem();
3692
3693         /* check options */
3694         while ((c = getopt(argc, argv, "ro:")) != -1) {
3695                 switch (c) {
3696                 case 'o':
3697                         if (parseprop(props, optarg) != 0)
3698                                 return (1);
3699                         break;
3700                 case 'r':
3701                         sd.sd_recursive = B_TRUE;
3702                         multiple_snaps = B_TRUE;
3703                         break;
3704                 case '?':
3705                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3706                             optopt);
3707                         goto usage;
3708                 }
3709         }
3710
3711         argc -= optind;
3712         argv += optind;
3713
3714         /* check number of arguments */
3715         if (argc < 1) {
3716                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
3717                 goto usage;
3718         }
3719
3720         if (argc > 1)
3721                 multiple_snaps = B_TRUE;
3722         for (; argc > 0; argc--, argv++) {
3723                 char *atp;
3724                 zfs_handle_t *zhp;
3725
3726                 atp = strchr(argv[0], '@');
3727                 if (atp == NULL)
3728                         goto usage;
3729                 *atp = '\0';
3730                 sd.sd_snapname = atp + 1;
3731                 zhp = zfs_open(g_zfs, argv[0],
3732                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3733                 if (zhp == NULL)
3734                         goto usage;
3735                 if (zfs_snapshot_cb(zhp, &sd) != 0)
3736                         goto usage;
3737         }
3738
3739         ret = zfs_snapshot_nvl(g_zfs, sd.sd_nvl, props);
3740         nvlist_free(sd.sd_nvl);
3741         nvlist_free(props);
3742         if (ret != 0 && multiple_snaps)
3743                 (void) fprintf(stderr, gettext("no snapshots were created\n"));
3744         return (ret != 0);
3745
3746 usage:
3747         nvlist_free(sd.sd_nvl);
3748         nvlist_free(props);
3749         usage(B_FALSE);
3750         return (-1);
3751 }
3752
3753 /*
3754  * Send a backup stream to stdout.
3755  */
3756 static int
3757 zfs_do_send(int argc, char **argv)
3758 {
3759         char *fromname = NULL;
3760         char *toname = NULL;
3761         char *resume_token = NULL;
3762         char *cp;
3763         zfs_handle_t *zhp;
3764         sendflags_t flags = { 0 };
3765         int c, err;
3766         nvlist_t *dbgnv = NULL;
3767         boolean_t extraverbose = B_FALSE;
3768
3769         /* check options */
3770         while ((c = getopt(argc, argv, ":i:I:RDpvnPLet:")) != -1) {
3771                 switch (c) {
3772                 case 'i':
3773                         if (fromname)
3774                                 usage(B_FALSE);
3775                         fromname = optarg;
3776                         break;
3777                 case 'I':
3778                         if (fromname)
3779                                 usage(B_FALSE);
3780                         fromname = optarg;
3781                         flags.doall = B_TRUE;
3782                         break;
3783                 case 'R':
3784                         flags.replicate = B_TRUE;
3785                         break;
3786                 case 'p':
3787                         flags.props = B_TRUE;
3788                         break;
3789                 case 'P':
3790                         flags.parsable = B_TRUE;
3791                         flags.verbose = B_TRUE;
3792                         break;
3793                 case 'v':
3794                         if (flags.verbose)
3795                                 extraverbose = B_TRUE;
3796                         flags.verbose = B_TRUE;
3797                         flags.progress = B_TRUE;
3798                         break;
3799                 case 'D':
3800                         flags.dedup = B_TRUE;
3801                         break;
3802                 case 'n':
3803                         flags.dryrun = B_TRUE;
3804                         break;
3805                 case 'L':
3806                         flags.largeblock = B_TRUE;
3807                         break;
3808                 case 'e':
3809                         flags.embed_data = B_TRUE;
3810                         break;
3811                 case 't':
3812                         resume_token = optarg;
3813                         break;
3814                 case ':':
3815                         (void) fprintf(stderr, gettext("missing argument for "
3816                             "'%c' option\n"), optopt);
3817                         usage(B_FALSE);
3818                         break;
3819                 case '?':
3820                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3821                             optopt);
3822                         usage(B_FALSE);
3823                 }
3824         }
3825
3826         argc -= optind;
3827         argv += optind;
3828
3829         if (resume_token != NULL) {
3830                 if (fromname != NULL || flags.replicate || flags.props ||
3831                     flags.dedup) {
3832                         (void) fprintf(stderr,
3833                             gettext("invalid flags combined with -t\n"));
3834                         usage(B_FALSE);
3835                 }
3836                 if (argc != 0) {
3837                         (void) fprintf(stderr, gettext("no additional "
3838                             "arguments are permitted with -t\n"));
3839                         usage(B_FALSE);
3840                 }
3841         } else {
3842                 if (argc < 1) {
3843                         (void) fprintf(stderr,
3844                             gettext("missing snapshot argument\n"));
3845                         usage(B_FALSE);
3846                 }
3847                 if (argc > 1) {
3848                         (void) fprintf(stderr, gettext("too many arguments\n"));
3849                         usage(B_FALSE);
3850                 }
3851         }
3852
3853         if (!flags.dryrun && isatty(STDOUT_FILENO)) {
3854                 (void) fprintf(stderr,
3855                     gettext("Error: Stream can not be written to a terminal.\n"
3856                     "You must redirect standard output.\n"));
3857                 return (1);
3858         }
3859
3860         if (resume_token != NULL) {
3861                 return (zfs_send_resume(g_zfs, &flags, STDOUT_FILENO,
3862                     resume_token));
3863         }
3864
3865         /*
3866          * Special case sending a filesystem, or from a bookmark.
3867          */
3868         if (strchr(argv[0], '@') == NULL ||
3869             (fromname && strchr(fromname, '#') != NULL)) {
3870                 char frombuf[ZFS_MAXNAMELEN];
3871                 enum lzc_send_flags lzc_flags = 0;
3872
3873                 if (flags.replicate || flags.doall || flags.props ||
3874                     flags.dedup || flags.dryrun || flags.verbose ||
3875                     flags.progress) {
3876                         (void) fprintf(stderr,
3877                             gettext("Error: "
3878                             "Unsupported flag with filesystem or bookmark.\n"));
3879                         return (1);
3880                 }
3881
3882                 zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET);
3883                 if (zhp == NULL)
3884                         return (1);
3885
3886                 if (flags.largeblock)
3887                         lzc_flags |= LZC_SEND_FLAG_LARGE_BLOCK;
3888                 if (flags.embed_data)
3889                         lzc_flags |= LZC_SEND_FLAG_EMBED_DATA;
3890
3891                 if (fromname != NULL &&
3892                     (fromname[0] == '#' || fromname[0] == '@')) {
3893                         /*
3894                          * Incremental source name begins with # or @.
3895                          * Default to same fs as target.
3896                          */
3897                         (void) strncpy(frombuf, argv[0], sizeof (frombuf));
3898                         cp = strchr(frombuf, '@');
3899                         if (cp != NULL)
3900                                 *cp = '\0';
3901                         (void) strlcat(frombuf, fromname, sizeof (frombuf));
3902                         fromname = frombuf;
3903                 }
3904                 err = zfs_send_one(zhp, fromname, STDOUT_FILENO, lzc_flags);
3905                 zfs_close(zhp);
3906                 return (err != 0);
3907         }
3908
3909         cp = strchr(argv[0], '@');
3910         *cp = '\0';
3911         toname = cp + 1;
3912         zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3913         if (zhp == NULL)
3914                 return (1);
3915
3916         /*
3917          * If they specified the full path to the snapshot, chop off
3918          * everything except the short name of the snapshot, but special
3919          * case if they specify the origin.
3920          */
3921         if (fromname && (cp = strchr(fromname, '@')) != NULL) {
3922                 char origin[ZFS_MAXNAMELEN];
3923                 zprop_source_t src;
3924
3925                 (void) zfs_prop_get(zhp, ZFS_PROP_ORIGIN,
3926                     origin, sizeof (origin), &src, NULL, 0, B_FALSE);
3927
3928                 if (strcmp(origin, fromname) == 0) {
3929                         fromname = NULL;
3930                         flags.fromorigin = B_TRUE;
3931                 } else {
3932                         *cp = '\0';
3933                         if (cp != fromname && strcmp(argv[0], fromname)) {
3934                                 (void) fprintf(stderr,
3935                                     gettext("incremental source must be "
3936                                     "in same filesystem\n"));
3937                                 usage(B_FALSE);
3938                         }
3939                         fromname = cp + 1;
3940                         if (strchr(fromname, '@') || strchr(fromname, '/')) {
3941                                 (void) fprintf(stderr,
3942                                     gettext("invalid incremental source\n"));
3943                                 usage(B_FALSE);
3944                         }
3945                 }
3946         }
3947
3948         if (flags.replicate && fromname == NULL)
3949                 flags.doall = B_TRUE;
3950
3951         err = zfs_send(zhp, fromname, toname, &flags, STDOUT_FILENO, NULL, 0,
3952             extraverbose ? &dbgnv : NULL);
3953
3954         if (extraverbose && dbgnv != NULL) {
3955                 /*
3956                  * dump_nvlist prints to stdout, but that's been
3957                  * redirected to a file.  Make it print to stderr
3958                  * instead.
3959                  */
3960                 (void) dup2(STDERR_FILENO, STDOUT_FILENO);
3961                 dump_nvlist(dbgnv, 0);
3962                 nvlist_free(dbgnv);
3963         }
3964         zfs_close(zhp);
3965
3966         return (err != 0);
3967 }
3968
3969 /*
3970  * Restore a backup stream from stdin.
3971  */
3972 static int
3973 zfs_do_receive(int argc, char **argv)
3974 {
3975         int c, err;
3976         recvflags_t flags = { 0 };
3977         boolean_t abort_resumable = B_FALSE;
3978
3979         nvlist_t *props;
3980         nvpair_t *nvp = NULL;
3981
3982         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
3983                 nomem();
3984
3985         /* check options */
3986         while ((c = getopt(argc, argv, ":o:denuvFsA")) != -1) {
3987                 switch (c) {
3988                 case 'o':
3989                         if (parseprop(props, optarg) != 0)
3990                                 return (1);
3991                         break;
3992                 case 'd':
3993                         flags.isprefix = B_TRUE;
3994                         break;
3995                 case 'e':
3996                         flags.isprefix = B_TRUE;
3997                         flags.istail = B_TRUE;
3998                         break;
3999                 case 'n':
4000                         flags.dryrun = B_TRUE;
4001                         break;
4002                 case 'u':
4003                         flags.nomount = B_TRUE;
4004                         break;
4005                 case 'v':
4006                         flags.verbose = B_TRUE;
4007                         break;
4008                 case 's':
4009                         flags.resumable = B_TRUE;
4010                         break;
4011                 case 'F':
4012                         flags.force = B_TRUE;
4013                         break;
4014                 case 'A':
4015                         abort_resumable = B_TRUE;
4016                         break;
4017                 case ':':
4018                         (void) fprintf(stderr, gettext("missing argument for "
4019                             "'%c' option\n"), optopt);
4020                         usage(B_FALSE);
4021                         break;
4022                 case '?':
4023                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
4024                             optopt);
4025                         usage(B_FALSE);
4026                 }
4027         }
4028
4029         argc -= optind;
4030         argv += optind;
4031
4032         /* check number of arguments */
4033         if (argc < 1) {
4034                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
4035                 usage(B_FALSE);
4036         }
4037         if (argc > 1) {
4038                 (void) fprintf(stderr, gettext("too many arguments\n"));
4039                 usage(B_FALSE);
4040         }
4041
4042         while ((nvp = nvlist_next_nvpair(props, nvp))) {
4043                 if (strcmp(nvpair_name(nvp), "origin") != 0) {
4044                         (void) fprintf(stderr, gettext("invalid option"));
4045                         usage(B_FALSE);
4046                 }
4047         }
4048
4049         if (abort_resumable) {
4050                 if (flags.isprefix || flags.istail || flags.dryrun ||
4051                     flags.resumable || flags.nomount) {
4052                         (void) fprintf(stderr, gettext("invalid option"));
4053                         usage(B_FALSE);
4054                 }
4055
4056                 char namebuf[ZFS_MAXNAMELEN];
4057                 (void) snprintf(namebuf, sizeof (namebuf),
4058                     "%s/%%recv", argv[0]);
4059
4060                 if (zfs_dataset_exists(g_zfs, namebuf,
4061                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME)) {
4062                         zfs_handle_t *zhp = zfs_open(g_zfs,
4063                             namebuf, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
4064                         if (zhp == NULL)
4065                                 return (1);
4066                         err = zfs_destroy(zhp, B_FALSE);
4067                 } else {
4068                         zfs_handle_t *zhp = zfs_open(g_zfs,
4069                             argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
4070                         if (zhp == NULL)
4071                                 usage(B_FALSE);
4072                         if (!zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) ||
4073                             zfs_prop_get(zhp, ZFS_PROP_RECEIVE_RESUME_TOKEN,
4074                             NULL, 0, NULL, NULL, 0, B_TRUE) == -1) {
4075                                 (void) fprintf(stderr,
4076                                     gettext("'%s' does not have any "
4077                                     "resumable receive state to abort\n"),
4078                                     argv[0]);
4079                                 return (1);
4080                         }
4081                         err = zfs_destroy(zhp, B_FALSE);
4082                 }
4083
4084                 return (err != 0);
4085         }
4086
4087         if (isatty(STDIN_FILENO)) {
4088                 (void) fprintf(stderr,
4089                     gettext("Error: Backup stream can not be read "
4090                     "from a terminal.\n"
4091                     "You must redirect standard input.\n"));
4092                 return (1);
4093         }
4094         err = zfs_receive(g_zfs, argv[0], props, &flags, STDIN_FILENO, NULL);
4095
4096         return (err != 0);
4097 }
4098
4099 /*
4100  * allow/unallow stuff
4101  */
4102 /* copied from zfs/sys/dsl_deleg.h */
4103 #define ZFS_DELEG_PERM_CREATE           "create"
4104 #define ZFS_DELEG_PERM_DESTROY          "destroy"
4105 #define ZFS_DELEG_PERM_SNAPSHOT         "snapshot"
4106 #define ZFS_DELEG_PERM_ROLLBACK         "rollback"
4107 #define ZFS_DELEG_PERM_CLONE            "clone"
4108 #define ZFS_DELEG_PERM_PROMOTE          "promote"
4109 #define ZFS_DELEG_PERM_RENAME           "rename"
4110 #define ZFS_DELEG_PERM_MOUNT            "mount"
4111 #define ZFS_DELEG_PERM_SHARE            "share"
4112 #define ZFS_DELEG_PERM_SEND             "send"
4113 #define ZFS_DELEG_PERM_RECEIVE          "receive"
4114 #define ZFS_DELEG_PERM_ALLOW            "allow"
4115 #define ZFS_DELEG_PERM_USERPROP         "userprop"
4116 #define ZFS_DELEG_PERM_VSCAN            "vscan" /* ??? */
4117 #define ZFS_DELEG_PERM_USERQUOTA        "userquota"
4118 #define ZFS_DELEG_PERM_GROUPQUOTA       "groupquota"
4119 #define ZFS_DELEG_PERM_USERUSED         "userused"
4120 #define ZFS_DELEG_PERM_GROUPUSED        "groupused"
4121 #define ZFS_DELEG_PERM_HOLD             "hold"
4122 #define ZFS_DELEG_PERM_RELEASE          "release"
4123 #define ZFS_DELEG_PERM_DIFF             "diff"
4124 #define ZFS_DELEG_PERM_BOOKMARK         "bookmark"
4125
4126 #define ZFS_NUM_DELEG_NOTES ZFS_DELEG_NOTE_NONE
4127
4128 static zfs_deleg_perm_tab_t zfs_deleg_perm_tbl[] = {
4129         { ZFS_DELEG_PERM_ALLOW, ZFS_DELEG_NOTE_ALLOW },
4130         { ZFS_DELEG_PERM_CLONE, ZFS_DELEG_NOTE_CLONE },
4131         { ZFS_DELEG_PERM_CREATE, ZFS_DELEG_NOTE_CREATE },
4132         { ZFS_DELEG_PERM_DESTROY, ZFS_DELEG_NOTE_DESTROY },
4133         { ZFS_DELEG_PERM_DIFF, ZFS_DELEG_NOTE_DIFF},
4134         { ZFS_DELEG_PERM_HOLD, ZFS_DELEG_NOTE_HOLD },
4135         { ZFS_DELEG_PERM_MOUNT, ZFS_DELEG_NOTE_MOUNT },
4136         { ZFS_DELEG_PERM_PROMOTE, ZFS_DELEG_NOTE_PROMOTE },
4137         { ZFS_DELEG_PERM_RECEIVE, ZFS_DELEG_NOTE_RECEIVE },
4138         { ZFS_DELEG_PERM_RELEASE, ZFS_DELEG_NOTE_RELEASE },
4139         { ZFS_DELEG_PERM_RENAME, ZFS_DELEG_NOTE_RENAME },
4140         { ZFS_DELEG_PERM_ROLLBACK, ZFS_DELEG_NOTE_ROLLBACK },
4141         { ZFS_DELEG_PERM_SEND, ZFS_DELEG_NOTE_SEND },
4142         { ZFS_DELEG_PERM_SHARE, ZFS_DELEG_NOTE_SHARE },
4143         { ZFS_DELEG_PERM_SNAPSHOT, ZFS_DELEG_NOTE_SNAPSHOT },
4144         { ZFS_DELEG_PERM_BOOKMARK, ZFS_DELEG_NOTE_BOOKMARK },
4145
4146         { ZFS_DELEG_PERM_GROUPQUOTA, ZFS_DELEG_NOTE_GROUPQUOTA },
4147         { ZFS_DELEG_PERM_GROUPUSED, ZFS_DELEG_NOTE_GROUPUSED },
4148         { ZFS_DELEG_PERM_USERPROP, ZFS_DELEG_NOTE_USERPROP },
4149         { ZFS_DELEG_PERM_USERQUOTA, ZFS_DELEG_NOTE_USERQUOTA },
4150         { ZFS_DELEG_PERM_USERUSED, ZFS_DELEG_NOTE_USERUSED },
4151         { NULL, ZFS_DELEG_NOTE_NONE }
4152 };
4153
4154 /* permission structure */
4155 typedef struct deleg_perm {
4156         zfs_deleg_who_type_t    dp_who_type;
4157         const char              *dp_name;
4158         boolean_t               dp_local;
4159         boolean_t               dp_descend;
4160 } deleg_perm_t;
4161
4162 /* */
4163 typedef struct deleg_perm_node {
4164         deleg_perm_t            dpn_perm;
4165
4166         uu_avl_node_t           dpn_avl_node;
4167 } deleg_perm_node_t;
4168
4169 typedef struct fs_perm fs_perm_t;
4170
4171 /* permissions set */
4172 typedef struct who_perm {
4173         zfs_deleg_who_type_t    who_type;
4174         const char              *who_name;              /* id */
4175         char                    who_ug_name[256];       /* user/group name */
4176         fs_perm_t               *who_fsperm;            /* uplink */
4177
4178         uu_avl_t                *who_deleg_perm_avl;    /* permissions */
4179 } who_perm_t;
4180
4181 /* */
4182 typedef struct who_perm_node {
4183         who_perm_t      who_perm;
4184         uu_avl_node_t   who_avl_node;
4185 } who_perm_node_t;
4186
4187 typedef struct fs_perm_set fs_perm_set_t;
4188 /* fs permissions */
4189 struct fs_perm {
4190         const char              *fsp_name;
4191
4192         uu_avl_t                *fsp_sc_avl;    /* sets,create */
4193         uu_avl_t                *fsp_uge_avl;   /* user,group,everyone */
4194
4195         fs_perm_set_t           *fsp_set;       /* uplink */
4196 };
4197
4198 /* */
4199 typedef struct fs_perm_node {
4200         fs_perm_t       fspn_fsperm;
4201         uu_avl_t        *fspn_avl;
4202
4203         uu_list_node_t  fspn_list_node;
4204 } fs_perm_node_t;
4205
4206 /* top level structure */
4207 struct fs_perm_set {
4208         uu_list_pool_t  *fsps_list_pool;
4209         uu_list_t       *fsps_list; /* list of fs_perms */
4210
4211         uu_avl_pool_t   *fsps_named_set_avl_pool;
4212         uu_avl_pool_t   *fsps_who_perm_avl_pool;
4213         uu_avl_pool_t   *fsps_deleg_perm_avl_pool;
4214 };
4215
4216 static inline const char *
4217 deleg_perm_type(zfs_deleg_note_t note)
4218 {
4219         /* subcommands */
4220         switch (note) {
4221                 /* SUBCOMMANDS */
4222                 /* OTHER */
4223         case ZFS_DELEG_NOTE_GROUPQUOTA:
4224         case ZFS_DELEG_NOTE_GROUPUSED:
4225         case ZFS_DELEG_NOTE_USERPROP:
4226         case ZFS_DELEG_NOTE_USERQUOTA:
4227         case ZFS_DELEG_NOTE_USERUSED:
4228                 /* other */
4229                 return (gettext("other"));
4230         default:
4231                 return (gettext("subcommand"));
4232         }
4233 }
4234
4235 static int inline
4236 who_type2weight(zfs_deleg_who_type_t who_type)
4237 {
4238         int res;
4239         switch (who_type) {
4240                 case ZFS_DELEG_NAMED_SET_SETS:
4241                 case ZFS_DELEG_NAMED_SET:
4242                         res = 0;
4243                         break;
4244                 case ZFS_DELEG_CREATE_SETS:
4245                 case ZFS_DELEG_CREATE:
4246                         res = 1;
4247                         break;
4248                 case ZFS_DELEG_USER_SETS:
4249                 case ZFS_DELEG_USER:
4250                         res = 2;
4251                         break;
4252                 case ZFS_DELEG_GROUP_SETS:
4253                 case ZFS_DELEG_GROUP:
4254                         res = 3;
4255                         break;
4256                 case ZFS_DELEG_EVERYONE_SETS:
4257                 case ZFS_DELEG_EVERYONE:
4258                         res = 4;
4259                         break;
4260                 default:
4261                         res = -1;
4262         }
4263
4264         return (res);
4265 }
4266
4267 /* ARGSUSED */
4268 static int
4269 who_perm_compare(const void *larg, const void *rarg, void *unused)
4270 {
4271         const who_perm_node_t *l = larg;
4272         const who_perm_node_t *r = rarg;
4273         zfs_deleg_who_type_t ltype = l->who_perm.who_type;
4274         zfs_deleg_who_type_t rtype = r->who_perm.who_type;
4275         int lweight = who_type2weight(ltype);
4276         int rweight = who_type2weight(rtype);
4277         int res = lweight - rweight;
4278         if (res == 0)
4279                 res = strncmp(l->who_perm.who_name, r->who_perm.who_name,
4280                     ZFS_MAX_DELEG_NAME-1);
4281
4282         if (res == 0)
4283                 return (0);
4284         if (res > 0)
4285                 return (1);
4286         else
4287                 return (-1);
4288 }
4289
4290 /* ARGSUSED */
4291 static int
4292 deleg_perm_compare(const void *larg, const void *rarg, void *unused)
4293 {
4294         const deleg_perm_node_t *l = larg;
4295         const deleg_perm_node_t *r = rarg;
4296         int res =  strncmp(l->dpn_perm.dp_name, r->dpn_perm.dp_name,
4297             ZFS_MAX_DELEG_NAME-1);
4298
4299         if (res == 0)
4300                 return (0);
4301
4302         if (res > 0)
4303                 return (1);
4304         else
4305                 return (-1);
4306 }
4307
4308 static inline void
4309 fs_perm_set_init(fs_perm_set_t *fspset)
4310 {
4311         bzero(fspset, sizeof (fs_perm_set_t));
4312
4313         if ((fspset->fsps_list_pool = uu_list_pool_create("fsps_list_pool",
4314             sizeof (fs_perm_node_t), offsetof(fs_perm_node_t, fspn_list_node),
4315             NULL, UU_DEFAULT)) == NULL)
4316                 nomem();
4317         if ((fspset->fsps_list = uu_list_create(fspset->fsps_list_pool, NULL,
4318             UU_DEFAULT)) == NULL)
4319                 nomem();
4320
4321         if ((fspset->fsps_named_set_avl_pool = uu_avl_pool_create(
4322             "named_set_avl_pool", sizeof (who_perm_node_t), offsetof(
4323             who_perm_node_t, who_avl_node), who_perm_compare,
4324             UU_DEFAULT)) == NULL)
4325                 nomem();
4326
4327         if ((fspset->fsps_who_perm_avl_pool = uu_avl_pool_create(
4328             "who_perm_avl_pool", sizeof (who_perm_node_t), offsetof(
4329             who_perm_node_t, who_avl_node), who_perm_compare,
4330             UU_DEFAULT)) == NULL)
4331                 nomem();
4332
4333         if ((fspset->fsps_deleg_perm_avl_pool = uu_avl_pool_create(
4334             "deleg_perm_avl_pool", sizeof (deleg_perm_node_t), offsetof(
4335             deleg_perm_node_t, dpn_avl_node), deleg_perm_compare, UU_DEFAULT))
4336             == NULL)
4337                 nomem();
4338 }
4339
4340 static inline void fs_perm_fini(fs_perm_t *);
4341 static inline void who_perm_fini(who_perm_t *);
4342
4343 static inline void
4344 fs_perm_set_fini(fs_perm_set_t *fspset)
4345 {
4346         fs_perm_node_t *node = uu_list_first(fspset->fsps_list);
4347
4348         while (node != NULL) {
4349                 fs_perm_node_t *next_node =
4350                     uu_list_next(fspset->fsps_list, node);
4351                 fs_perm_t *fsperm = &node->fspn_fsperm;
4352                 fs_perm_fini(fsperm);
4353                 uu_list_remove(fspset->fsps_list, node);
4354                 free(node);
4355                 node = next_node;
4356         }
4357
4358         uu_avl_pool_destroy(fspset->fsps_named_set_avl_pool);
4359         uu_avl_pool_destroy(fspset->fsps_who_perm_avl_pool);
4360         uu_avl_pool_destroy(fspset->fsps_deleg_perm_avl_pool);
4361 }
4362
4363 static inline void
4364 deleg_perm_init(deleg_perm_t *deleg_perm, zfs_deleg_who_type_t type,
4365     const char *name)
4366 {
4367         deleg_perm->dp_who_type = type;
4368         deleg_perm->dp_name = name;
4369 }
4370
4371 static inline void
4372 who_perm_init(who_perm_t *who_perm, fs_perm_t *fsperm,
4373     zfs_deleg_who_type_t type, const char *name)
4374 {
4375         uu_avl_pool_t   *pool;
4376         pool = fsperm->fsp_set->fsps_deleg_perm_avl_pool;
4377
4378         bzero(who_perm, sizeof (who_perm_t));
4379
4380         if ((who_perm->who_deleg_perm_avl = uu_avl_create(pool, NULL,
4381             UU_DEFAULT)) == NULL)
4382                 nomem();
4383
4384         who_perm->who_type = type;
4385         who_perm->who_name = name;
4386         who_perm->who_fsperm = fsperm;
4387 }
4388
4389 static inline void
4390 who_perm_fini(who_perm_t *who_perm)
4391 {
4392         deleg_perm_node_t *node = uu_avl_first(who_perm->who_deleg_perm_avl);
4393
4394         while (node != NULL) {
4395                 deleg_perm_node_t *next_node =
4396                     uu_avl_next(who_perm->who_deleg_perm_avl, node);
4397
4398                 uu_avl_remove(who_perm->who_deleg_perm_avl, node);
4399                 free(node);
4400                 node = next_node;
4401         }
4402
4403         uu_avl_destroy(who_perm->who_deleg_perm_avl);
4404 }
4405
4406 static inline void
4407 fs_perm_init(fs_perm_t *fsperm, fs_perm_set_t *fspset, const char *fsname)
4408 {
4409         uu_avl_pool_t   *nset_pool = fspset->fsps_named_set_avl_pool;
4410         uu_avl_pool_t   *who_pool = fspset->fsps_who_perm_avl_pool;
4411
4412         bzero(fsperm, sizeof (fs_perm_t));
4413
4414         if ((fsperm->fsp_sc_avl = uu_avl_create(nset_pool, NULL, UU_DEFAULT))
4415             == NULL)
4416                 nomem();
4417
4418         if ((fsperm->fsp_uge_avl = uu_avl_create(who_pool, NULL, UU_DEFAULT))
4419             == NULL)
4420                 nomem();
4421
4422         fsperm->fsp_set = fspset;
4423         fsperm->fsp_name = fsname;
4424 }
4425
4426 static inline void
4427 fs_perm_fini(fs_perm_t *fsperm)
4428 {
4429         who_perm_node_t *node = uu_avl_first(fsperm->fsp_sc_avl);
4430         while (node != NULL) {
4431                 who_perm_node_t *next_node = uu_avl_next(fsperm->fsp_sc_avl,
4432                     node);
4433                 who_perm_t *who_perm = &node->who_perm;
4434                 who_perm_fini(who_perm);
4435                 uu_avl_remove(fsperm->fsp_sc_avl, node);
4436                 free(node);
4437                 node = next_node;
4438         }
4439
4440         node = uu_avl_first(fsperm->fsp_uge_avl);
4441         while (node != NULL) {
4442                 who_perm_node_t *next_node = uu_avl_next(fsperm->fsp_uge_avl,
4443                     node);
4444                 who_perm_t *who_perm = &node->who_perm;
4445                 who_perm_fini(who_perm);
4446                 uu_avl_remove(fsperm->fsp_uge_avl, node);
4447                 free(node);
4448                 node = next_node;
4449         }
4450
4451         uu_avl_destroy(fsperm->fsp_sc_avl);
4452         uu_avl_destroy(fsperm->fsp_uge_avl);
4453 }
4454
4455 static void inline
4456 set_deleg_perm_node(uu_avl_t *avl, deleg_perm_node_t *node,
4457     zfs_deleg_who_type_t who_type, const char *name, char locality)
4458 {
4459         uu_avl_index_t idx = 0;
4460
4461         deleg_perm_node_t *found_node = NULL;
4462         deleg_perm_t    *deleg_perm = &node->dpn_perm;
4463
4464         deleg_perm_init(deleg_perm, who_type, name);
4465
4466         if ((found_node = uu_avl_find(avl, node, NULL, &idx))
4467             == NULL)
4468                 uu_avl_insert(avl, node, idx);
4469         else {
4470                 node = found_node;
4471                 deleg_perm = &node->dpn_perm;
4472         }
4473
4474
4475         switch (locality) {
4476         case ZFS_DELEG_LOCAL:
4477                 deleg_perm->dp_local = B_TRUE;
4478                 break;
4479         case ZFS_DELEG_DESCENDENT:
4480                 deleg_perm->dp_descend = B_TRUE;
4481                 break;
4482         case ZFS_DELEG_NA:
4483                 break;
4484         default:
4485                 assert(B_FALSE); /* invalid locality */
4486         }
4487 }
4488
4489 static inline int
4490 parse_who_perm(who_perm_t *who_perm, nvlist_t *nvl, char locality)
4491 {
4492         nvpair_t *nvp = NULL;
4493         fs_perm_set_t *fspset = who_perm->who_fsperm->fsp_set;
4494         uu_avl_t *avl = who_perm->who_deleg_perm_avl;
4495         zfs_deleg_who_type_t who_type = who_perm->who_type;
4496
4497         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4498                 const char *name = nvpair_name(nvp);
4499                 data_type_t type = nvpair_type(nvp);
4500                 uu_avl_pool_t *avl_pool = fspset->fsps_deleg_perm_avl_pool;
4501                 deleg_perm_node_t *node =
4502                     safe_malloc(sizeof (deleg_perm_node_t));
4503
4504                 assert(type == DATA_TYPE_BOOLEAN);
4505
4506                 uu_avl_node_init(node, &node->dpn_avl_node, avl_pool);
4507                 set_deleg_perm_node(avl, node, who_type, name, locality);
4508         }
4509
4510         return (0);
4511 }
4512
4513 static inline int
4514 parse_fs_perm(fs_perm_t *fsperm, nvlist_t *nvl)
4515 {
4516         nvpair_t *nvp = NULL;
4517         fs_perm_set_t *fspset = fsperm->fsp_set;
4518
4519         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4520                 nvlist_t *nvl2 = NULL;
4521                 const char *name = nvpair_name(nvp);
4522                 uu_avl_t *avl = NULL;
4523                 uu_avl_pool_t *avl_pool;
4524                 zfs_deleg_who_type_t perm_type = name[0];
4525                 char perm_locality = name[1];
4526                 const char *perm_name = name + 3;
4527                 boolean_t is_set = B_TRUE;
4528                 who_perm_t *who_perm = NULL;
4529
4530                 assert('$' == name[2]);
4531
4532                 if (nvpair_value_nvlist(nvp, &nvl2) != 0)
4533                         return (-1);
4534
4535                 switch (perm_type) {
4536                 case ZFS_DELEG_CREATE:
4537                 case ZFS_DELEG_CREATE_SETS:
4538                 case ZFS_DELEG_NAMED_SET:
4539                 case ZFS_DELEG_NAMED_SET_SETS:
4540                         avl_pool = fspset->fsps_named_set_avl_pool;
4541                         avl = fsperm->fsp_sc_avl;
4542                         break;
4543                 case ZFS_DELEG_USER:
4544                 case ZFS_DELEG_USER_SETS:
4545                 case ZFS_DELEG_GROUP:
4546                 case ZFS_DELEG_GROUP_SETS:
4547                 case ZFS_DELEG_EVERYONE:
4548                 case ZFS_DELEG_EVERYONE_SETS:
4549                         avl_pool = fspset->fsps_who_perm_avl_pool;
4550                         avl = fsperm->fsp_uge_avl;
4551                         break;
4552                 }
4553
4554                 if (is_set) {
4555                         who_perm_node_t *found_node = NULL;
4556                         who_perm_node_t *node = safe_malloc(
4557                             sizeof (who_perm_node_t));
4558                         who_perm = &node->who_perm;
4559                         uu_avl_index_t idx = 0;
4560
4561                         uu_avl_node_init(node, &node->who_avl_node, avl_pool);
4562                         who_perm_init(who_perm, fsperm, perm_type, perm_name);
4563
4564                         if ((found_node = uu_avl_find(avl, node, NULL, &idx))
4565                             == NULL) {
4566                                 if (avl == fsperm->fsp_uge_avl) {
4567                                         uid_t rid = 0;
4568                                         struct passwd *p = NULL;
4569                                         struct group *g = NULL;
4570                                         const char *nice_name = NULL;
4571
4572                                         switch (perm_type) {
4573                                         case ZFS_DELEG_USER_SETS:
4574                                         case ZFS_DELEG_USER:
4575                                                 rid = atoi(perm_name);
4576                                                 p = getpwuid(rid);
4577                                                 if (p)
4578                                                         nice_name = p->pw_name;
4579                                                 break;
4580                                         case ZFS_DELEG_GROUP_SETS:
4581                                         case ZFS_DELEG_GROUP:
4582                                                 rid = atoi(perm_name);
4583                                                 g = getgrgid(rid);
4584                                                 if (g)
4585                                                         nice_name = g->gr_name;
4586                                                 break;
4587                                         }
4588
4589                                         if (nice_name != NULL)
4590                                                 (void) strlcpy(
4591                                                     node->who_perm.who_ug_name,
4592                                                     nice_name, 256);
4593                                 }
4594
4595                                 uu_avl_insert(avl, node, idx);
4596                         } else {
4597                                 node = found_node;
4598                                 who_perm = &node->who_perm;
4599                         }
4600                 }
4601
4602                 (void) parse_who_perm(who_perm, nvl2, perm_locality);
4603         }
4604
4605         return (0);
4606 }
4607
4608 static inline int
4609 parse_fs_perm_set(fs_perm_set_t *fspset, nvlist_t *nvl)
4610 {
4611         nvpair_t *nvp = NULL;
4612         uu_avl_index_t idx = 0;
4613
4614         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4615                 nvlist_t *nvl2 = NULL;
4616                 const char *fsname = nvpair_name(nvp);
4617                 data_type_t type = nvpair_type(nvp);
4618                 fs_perm_t *fsperm = NULL;
4619                 fs_perm_node_t *node = safe_malloc(sizeof (fs_perm_node_t));
4620                 if (node == NULL)
4621                         nomem();
4622
4623                 fsperm = &node->fspn_fsperm;
4624
4625                 assert(DATA_TYPE_NVLIST == type);
4626
4627                 uu_list_node_init(node, &node->fspn_list_node,
4628                     fspset->fsps_list_pool);
4629
4630                 idx = uu_list_numnodes(fspset->fsps_list);
4631                 fs_perm_init(fsperm, fspset, fsname);
4632
4633                 if (nvpair_value_nvlist(nvp, &nvl2) != 0)
4634                         return (-1);
4635
4636                 (void) parse_fs_perm(fsperm, nvl2);
4637
4638                 uu_list_insert(fspset->fsps_list, node, idx);
4639         }
4640
4641         return (0);
4642 }
4643
4644 static inline const char *
4645 deleg_perm_comment(zfs_deleg_note_t note)
4646 {
4647         const char *str = "";
4648
4649         /* subcommands */
4650         switch (note) {
4651                 /* SUBCOMMANDS */
4652         case ZFS_DELEG_NOTE_ALLOW:
4653                 str = gettext("Must also have the permission that is being"
4654                     "\n\t\t\t\tallowed");
4655                 break;
4656         case ZFS_DELEG_NOTE_CLONE:
4657                 str = gettext("Must also have the 'create' ability and 'mount'"
4658                     "\n\t\t\t\tability in the origin file system");
4659                 break;
4660         case ZFS_DELEG_NOTE_CREATE:
4661                 str = gettext("Must also have the 'mount' ability");
4662                 break;
4663         case ZFS_DELEG_NOTE_DESTROY:
4664                 str = gettext("Must also have the 'mount' ability");
4665                 break;
4666         case ZFS_DELEG_NOTE_DIFF:
4667                 str = gettext("Allows lookup of paths within a dataset;"
4668                     "\n\t\t\t\tgiven an object number. Ordinary users need this"
4669                     "\n\t\t\t\tin order to use zfs diff");
4670                 break;
4671         case ZFS_DELEG_NOTE_HOLD:
4672                 str = gettext("Allows adding a user hold to a snapshot");
4673                 break;
4674         case ZFS_DELEG_NOTE_MOUNT:
4675                 str = gettext("Allows mount/umount of ZFS datasets");
4676                 break;
4677         case ZFS_DELEG_NOTE_PROMOTE:
4678                 str = gettext("Must also have the 'mount'\n\t\t\t\tand"
4679                     " 'promote' ability in the origin file system");
4680                 break;
4681         case ZFS_DELEG_NOTE_RECEIVE:
4682                 str = gettext("Must also have the 'mount' and 'create'"
4683                     " ability");
4684                 break;
4685         case ZFS_DELEG_NOTE_RELEASE:
4686                 str = gettext("Allows releasing a user hold which\n\t\t\t\t"
4687                     "might destroy the snapshot");
4688                 break;
4689         case ZFS_DELEG_NOTE_RENAME:
4690                 str = gettext("Must also have the 'mount' and 'create'"
4691                     "\n\t\t\t\tability in the new parent");
4692                 break;
4693         case ZFS_DELEG_NOTE_ROLLBACK:
4694                 str = gettext("");
4695                 break;
4696         case ZFS_DELEG_NOTE_SEND:
4697                 str = gettext("");
4698                 break;
4699         case ZFS_DELEG_NOTE_SHARE:
4700                 str = gettext("Allows sharing file systems over NFS or SMB"
4701                     "\n\t\t\t\tprotocols");
4702                 break;
4703         case ZFS_DELEG_NOTE_SNAPSHOT:
4704                 str = gettext("");
4705                 break;
4706 /*
4707  *      case ZFS_DELEG_NOTE_VSCAN:
4708  *              str = gettext("");
4709  *              break;
4710  */
4711                 /* OTHER */
4712         case ZFS_DELEG_NOTE_GROUPQUOTA:
4713                 str = gettext("Allows accessing any groupquota@... property");
4714                 break;
4715         case ZFS_DELEG_NOTE_GROUPUSED:
4716                 str = gettext("Allows reading any groupused@... property");
4717                 break;
4718         case ZFS_DELEG_NOTE_USERPROP:
4719                 str = gettext("Allows changing any user property");
4720                 break;
4721         case ZFS_DELEG_NOTE_USERQUOTA:
4722                 str = gettext("Allows accessing any userquota@... property");
4723                 break;
4724         case ZFS_DELEG_NOTE_USERUSED:
4725                 str = gettext("Allows reading any userused@... property");
4726                 break;
4727                 /* other */
4728         default:
4729                 str = "";
4730         }
4731
4732         return (str);
4733 }
4734
4735 struct allow_opts {
4736         boolean_t local;
4737         boolean_t descend;
4738         boolean_t user;
4739         boolean_t group;
4740         boolean_t everyone;
4741         boolean_t create;
4742         boolean_t set;
4743         boolean_t recursive; /* unallow only */
4744         boolean_t prt_usage;
4745
4746         boolean_t prt_perms;
4747         char *who;
4748         char *perms;
4749         const char *dataset;
4750 };
4751
4752 static inline int
4753 prop_cmp(const void *a, const void *b)
4754 {
4755         const char *str1 = *(const char **)a;
4756         const char *str2 = *(const char **)b;
4757         return (strcmp(str1, str2));
4758 }
4759
4760 static void
4761 allow_usage(boolean_t un, boolean_t requested, const char *msg)
4762 {
4763         const char *opt_desc[] = {
4764                 "-h", gettext("show this help message and exit"),
4765                 "-l", gettext("set permission locally"),
4766                 "-d", gettext("set permission for descents"),
4767                 "-u", gettext("set permission for user"),
4768                 "-g", gettext("set permission for group"),
4769                 "-e", gettext("set permission for everyone"),
4770                 "-c", gettext("set create time permission"),
4771                 "-s", gettext("define permission set"),
4772                 /* unallow only */
4773                 "-r", gettext("remove permissions recursively"),
4774         };
4775         size_t unallow_size = sizeof (opt_desc) / sizeof (char *);
4776         size_t allow_size = unallow_size - 2;
4777         const char *props[ZFS_NUM_PROPS];
4778         int i;
4779         size_t count = 0;
4780         FILE *fp = requested ? stdout : stderr;
4781         zprop_desc_t *pdtbl = zfs_prop_get_table();
4782         const char *fmt = gettext("%-16s %-14s\t%s\n");
4783
4784         (void) fprintf(fp, gettext("Usage: %s\n"), get_usage(un ? HELP_UNALLOW :
4785             HELP_ALLOW));
4786         (void) fprintf(fp, gettext("Options:\n"));
4787         for (i = 0; i < (un ? unallow_size : allow_size); i++) {
4788                 const char *opt = opt_desc[i++];
4789                 const char *optdsc = opt_desc[i];
4790                 (void) fprintf(fp, gettext("  %-10s  %s\n"), opt, optdsc);
4791         }
4792
4793         (void) fprintf(fp, gettext("\nThe following permissions are "
4794             "supported:\n\n"));
4795         (void) fprintf(fp, fmt, gettext("NAME"), gettext("TYPE"),
4796             gettext("NOTES"));
4797         for (i = 0; i < ZFS_NUM_DELEG_NOTES; i++) {
4798                 const char *perm_name = zfs_deleg_perm_tbl[i].z_perm;
4799                 zfs_deleg_note_t perm_note = zfs_deleg_perm_tbl[i].z_note;
4800                 const char *perm_type = deleg_perm_type(perm_note);
4801                 const char *perm_comment = deleg_perm_comment(perm_note);
4802                 (void) fprintf(fp, fmt, perm_name, perm_type, perm_comment);
4803         }
4804
4805         for (i = 0; i < ZFS_NUM_PROPS; i++) {
4806                 zprop_desc_t *pd = &pdtbl[i];
4807                 if (pd->pd_visible != B_TRUE)
4808                         continue;
4809
4810                 if (pd->pd_attr == PROP_READONLY)
4811                         continue;
4812
4813                 props[count++] = pd->pd_name;
4814         }
4815         props[count] = NULL;
4816
4817         qsort(props, count, sizeof (char *), prop_cmp);
4818
4819         for (i = 0; i < count; i++)
4820                 (void) fprintf(fp, fmt, props[i], gettext("property"), "");
4821
4822         if (msg != NULL)
4823                 (void) fprintf(fp, gettext("\nzfs: error: %s"), msg);
4824
4825         exit(requested ? 0 : 2);
4826 }
4827
4828 static inline const char *
4829 munge_args(int argc, char **argv, boolean_t un, size_t expected_argc,
4830     char **permsp)
4831 {
4832         if (un && argc == expected_argc - 1)
4833                 *permsp = NULL;
4834         else if (argc == expected_argc)
4835                 *permsp = argv[argc - 2];
4836         else
4837                 allow_usage(un, B_FALSE,
4838                     gettext("wrong number of parameters\n"));
4839
4840         return (argv[argc - 1]);
4841 }
4842
4843 static void
4844 parse_allow_args(int argc, char **argv, boolean_t un, struct allow_opts *opts)
4845 {
4846         int uge_sum = opts->user + opts->group + opts->everyone;
4847         int csuge_sum = opts->create + opts->set + uge_sum;
4848         int ldcsuge_sum = csuge_sum + opts->local + opts->descend;
4849         int all_sum = un ? ldcsuge_sum + opts->recursive : ldcsuge_sum;
4850
4851         if (uge_sum > 1)
4852                 allow_usage(un, B_FALSE,
4853                     gettext("-u, -g, and -e are mutually exclusive\n"));
4854
4855         if (opts->prt_usage)
4856                 if (argc == 0 && all_sum == 0)
4857                         allow_usage(un, B_TRUE, NULL);
4858                 else
4859                         usage(B_FALSE);
4860
4861         if (opts->set) {
4862                 if (csuge_sum > 1)
4863                         allow_usage(un, B_FALSE,
4864                             gettext("invalid options combined with -s\n"));
4865
4866                 opts->dataset = munge_args(argc, argv, un, 3, &opts->perms);
4867                 if (argv[0][0] != '@')
4868                         allow_usage(un, B_FALSE,
4869                             gettext("invalid set name: missing '@' prefix\n"));
4870                 opts->who = argv[0];
4871         } else if (opts->create) {
4872                 if (ldcsuge_sum > 1)
4873                         allow_usage(un, B_FALSE,
4874                             gettext("invalid options combined with -c\n"));
4875                 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
4876         } else if (opts->everyone) {
4877                 if (csuge_sum > 1)
4878                         allow_usage(un, B_FALSE,
4879                             gettext("invalid options combined with -e\n"));
4880                 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
4881         } else if (uge_sum == 0 && argc > 0 && strcmp(argv[0], "everyone")
4882             == 0) {
4883                 opts->everyone = B_TRUE;
4884                 argc--;
4885                 argv++;
4886                 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
4887         } else if (argc == 1 && !un) {
4888                 opts->prt_perms = B_TRUE;
4889                 opts->dataset = argv[argc-1];
4890         } else {
4891                 opts->dataset = munge_args(argc, argv, un, 3, &opts->perms);
4892                 opts->who = argv[0];
4893         }
4894
4895         if (!opts->local && !opts->descend) {
4896                 opts->local = B_TRUE;
4897                 opts->descend = B_TRUE;
4898         }
4899 }
4900
4901 static void
4902 store_allow_perm(zfs_deleg_who_type_t type, boolean_t local, boolean_t descend,
4903     const char *who, char *perms, nvlist_t *top_nvl)
4904 {
4905         int i;
4906         char ld[2] = { '\0', '\0' };
4907         char who_buf[ZFS_MAXNAMELEN+32];
4908         char base_type;
4909         char set_type;
4910         nvlist_t *base_nvl = NULL;
4911         nvlist_t *set_nvl = NULL;
4912         nvlist_t *nvl;
4913
4914         if (nvlist_alloc(&base_nvl, NV_UNIQUE_NAME, 0) != 0)
4915                 nomem();
4916         if (nvlist_alloc(&set_nvl, NV_UNIQUE_NAME, 0) !=  0)
4917                 nomem();
4918
4919         switch (type) {
4920         case ZFS_DELEG_NAMED_SET_SETS:
4921         case ZFS_DELEG_NAMED_SET:
4922                 set_type = ZFS_DELEG_NAMED_SET_SETS;
4923                 base_type = ZFS_DELEG_NAMED_SET;
4924                 ld[0] = ZFS_DELEG_NA;
4925                 break;
4926         case ZFS_DELEG_CREATE_SETS:
4927         case ZFS_DELEG_CREATE:
4928                 set_type = ZFS_DELEG_CREATE_SETS;
4929                 base_type = ZFS_DELEG_CREATE;
4930                 ld[0] = ZFS_DELEG_NA;
4931                 break;
4932         case ZFS_DELEG_USER_SETS:
4933         case ZFS_DELEG_USER:
4934                 set_type = ZFS_DELEG_USER_SETS;
4935                 base_type = ZFS_DELEG_USER;
4936                 if (local)
4937                         ld[0] = ZFS_DELEG_LOCAL;
4938                 if (descend)
4939                         ld[1] = ZFS_DELEG_DESCENDENT;
4940                 break;
4941         case ZFS_DELEG_GROUP_SETS:
4942         case ZFS_DELEG_GROUP:
4943                 set_type = ZFS_DELEG_GROUP_SETS;
4944                 base_type = ZFS_DELEG_GROUP;
4945                 if (local)
4946                         ld[0] = ZFS_DELEG_LOCAL;
4947                 if (descend)
4948                         ld[1] = ZFS_DELEG_DESCENDENT;
4949                 break;
4950         case ZFS_DELEG_EVERYONE_SETS:
4951         case ZFS_DELEG_EVERYONE:
4952                 set_type = ZFS_DELEG_EVERYONE_SETS;
4953                 base_type = ZFS_DELEG_EVERYONE;
4954                 if (local)
4955                         ld[0] = ZFS_DELEG_LOCAL;
4956                 if (descend)
4957                         ld[1] = ZFS_DELEG_DESCENDENT;
4958         }
4959
4960         if (perms != NULL) {
4961                 char *curr = perms;
4962                 char *end = curr + strlen(perms);
4963
4964                 while (curr < end) {
4965                         char *delim = strchr(curr, ',');
4966                         if (delim == NULL)
4967                                 delim = end;
4968                         else
4969                                 *delim = '\0';
4970
4971                         if (curr[0] == '@')
4972                                 nvl = set_nvl;
4973                         else
4974                                 nvl = base_nvl;
4975
4976                         (void) nvlist_add_boolean(nvl, curr);
4977                         if (delim != end)
4978                                 *delim = ',';
4979                         curr = delim + 1;
4980                 }
4981
4982                 for (i = 0; i < 2; i++) {
4983                         char locality = ld[i];
4984                         if (locality == 0)
4985                                 continue;
4986
4987                         if (!nvlist_empty(base_nvl)) {
4988                                 if (who != NULL)
4989                                         (void) snprintf(who_buf,
4990                                             sizeof (who_buf), "%c%c$%s",
4991                                             base_type, locality, who);
4992                                 else
4993                                         (void) snprintf(who_buf,
4994                                             sizeof (who_buf), "%c%c$",
4995                                             base_type, locality);
4996
4997                                 (void) nvlist_add_nvlist(top_nvl, who_buf,
4998                                     base_nvl);
4999                         }
5000
5001
5002                         if (!nvlist_empty(set_nvl)) {
5003                                 if (who != NULL)
5004                                         (void) snprintf(who_buf,
5005                                             sizeof (who_buf), "%c%c$%s",
5006                                             set_type, locality, who);
5007                                 else
5008                                         (void) snprintf(who_buf,
5009                                             sizeof (who_buf), "%c%c$",
5010                                             set_type, locality);
5011
5012                                 (void) nvlist_add_nvlist(top_nvl, who_buf,
5013                                     set_nvl);
5014                         }
5015                 }
5016         } else {
5017                 for (i = 0; i < 2; i++) {
5018                         char locality = ld[i];
5019                         if (locality == 0)
5020                                 continue;
5021
5022                         if (who != NULL)
5023                                 (void) snprintf(who_buf, sizeof (who_buf),
5024                                     "%c%c$%s", base_type, locality, who);
5025                         else
5026                                 (void) snprintf(who_buf, sizeof (who_buf),
5027                                     "%c%c$", base_type, locality);
5028                         (void) nvlist_add_boolean(top_nvl, who_buf);
5029
5030                         if (who != NULL)
5031                                 (void) snprintf(who_buf, sizeof (who_buf),
5032                                     "%c%c$%s", set_type, locality, who);
5033                         else
5034                                 (void) snprintf(who_buf, sizeof (who_buf),
5035                                     "%c%c$", set_type, locality);
5036                         (void) nvlist_add_boolean(top_nvl, who_buf);
5037                 }
5038         }
5039 }
5040
5041 static int
5042 construct_fsacl_list(boolean_t un, struct allow_opts *opts, nvlist_t **nvlp)
5043 {
5044         if (nvlist_alloc(nvlp, NV_UNIQUE_NAME, 0) != 0)
5045                 nomem();
5046
5047         if (opts->set) {
5048                 store_allow_perm(ZFS_DELEG_NAMED_SET, opts->local,
5049                     opts->descend, opts->who, opts->perms, *nvlp);
5050         } else if (opts->create) {
5051                 store_allow_perm(ZFS_DELEG_CREATE, opts->local,
5052                     opts->descend, NULL, opts->perms, *nvlp);
5053         } else if (opts->everyone) {
5054                 store_allow_perm(ZFS_DELEG_EVERYONE, opts->local,
5055                     opts->descend, NULL, opts->perms, *nvlp);
5056         } else {
5057                 char *curr = opts->who;
5058                 char *end = curr + strlen(curr);
5059
5060                 while (curr < end) {
5061                         const char *who;
5062                         zfs_deleg_who_type_t who_type;
5063                         char *endch;
5064                         char *delim = strchr(curr, ',');
5065                         char errbuf[256];
5066                         char id[64];
5067                         struct passwd *p = NULL;
5068                         struct group *g = NULL;
5069
5070                         uid_t rid;
5071                         if (delim == NULL)
5072                                 delim = end;
5073                         else
5074                                 *delim = '\0';
5075
5076                         rid = (uid_t)strtol(curr, &endch, 0);
5077                         if (opts->user) {
5078                                 who_type = ZFS_DELEG_USER;
5079                                 if (*endch != '\0')
5080                                         p = getpwnam(curr);
5081                                 else
5082                                         p = getpwuid(rid);
5083
5084                                 if (p != NULL)
5085                                         rid = p->pw_uid;
5086                                 else {
5087                                         (void) snprintf(errbuf, 256, gettext(
5088                                             "invalid user %s"), curr);
5089                                         allow_usage(un, B_TRUE, errbuf);
5090                                 }
5091                         } else if (opts->group) {
5092                                 who_type = ZFS_DELEG_GROUP;
5093                                 if (*endch != '\0')
5094                                         g = getgrnam(curr);
5095                                 else
5096                                         g = getgrgid(rid);
5097
5098                                 if (g != NULL)
5099                                         rid = g->gr_gid;
5100                                 else {
5101                                         (void) snprintf(errbuf, 256, gettext(
5102                                             "invalid group %s"),  curr);
5103                                         allow_usage(un, B_TRUE, errbuf);
5104                                 }
5105                         } else {
5106                                 if (*endch != '\0') {
5107                                         p = getpwnam(curr);
5108                                 } else {
5109                                         p = getpwuid(rid);
5110                                 }
5111
5112                                 if (p == NULL)
5113                                         if (*endch != '\0') {
5114                                                 g = getgrnam(curr);
5115                                         } else {
5116                                                 g = getgrgid(rid);
5117                                         }
5118
5119                                 if (p != NULL) {
5120                                         who_type = ZFS_DELEG_USER;
5121                                         rid = p->pw_uid;
5122                                 } else if (g != NULL) {
5123                                         who_type = ZFS_DELEG_GROUP;
5124                                         rid = g->gr_gid;
5125                                 } else {
5126                                         (void) snprintf(errbuf, 256, gettext(
5127                                             "invalid user/group %s"), curr);
5128                                         allow_usage(un, B_TRUE, errbuf);
5129                                 }
5130                         }
5131
5132                         (void) sprintf(id, "%u", rid);
5133                         who = id;
5134
5135                         store_allow_perm(who_type, opts->local,
5136                             opts->descend, who, opts->perms, *nvlp);
5137                         curr = delim + 1;
5138                 }
5139         }
5140
5141         return (0);
5142 }
5143
5144 static void
5145 print_set_creat_perms(uu_avl_t *who_avl)
5146 {
5147         const char *sc_title[] = {
5148                 gettext("Permission sets:\n"),
5149                 gettext("Create time permissions:\n"),
5150                 NULL
5151         };
5152         const char **title_ptr = sc_title;
5153         who_perm_node_t *who_node = NULL;
5154         int prev_weight = -1;
5155
5156         for (who_node = uu_avl_first(who_avl); who_node != NULL;
5157             who_node = uu_avl_next(who_avl, who_node)) {
5158                 uu_avl_t *avl = who_node->who_perm.who_deleg_perm_avl;
5159                 zfs_deleg_who_type_t who_type = who_node->who_perm.who_type;
5160                 const char *who_name = who_node->who_perm.who_name;
5161                 int weight = who_type2weight(who_type);
5162                 boolean_t first = B_TRUE;
5163                 deleg_perm_node_t *deleg_node;
5164
5165                 if (prev_weight != weight) {
5166                         (void) printf(*title_ptr++);
5167                         prev_weight = weight;
5168                 }
5169
5170                 if (who_name == NULL || strnlen(who_name, 1) == 0)
5171                         (void) printf("\t");
5172                 else
5173                         (void) printf("\t%s ", who_name);
5174
5175                 for (deleg_node = uu_avl_first(avl); deleg_node != NULL;
5176                     deleg_node = uu_avl_next(avl, deleg_node)) {
5177                         if (first) {
5178                                 (void) printf("%s",
5179                                     deleg_node->dpn_perm.dp_name);
5180                                 first = B_FALSE;
5181                         } else
5182                                 (void) printf(",%s",
5183                                     deleg_node->dpn_perm.dp_name);
5184                 }
5185
5186                 (void) printf("\n");
5187         }
5188 }
5189
5190 static void inline
5191 print_uge_deleg_perms(uu_avl_t *who_avl, boolean_t local, boolean_t descend,
5192     const char *title)
5193 {
5194         who_perm_node_t *who_node = NULL;
5195         boolean_t prt_title = B_TRUE;
5196         uu_avl_walk_t *walk;
5197
5198         if ((walk = uu_avl_walk_start(who_avl, UU_WALK_ROBUST)) == NULL)
5199                 nomem();
5200
5201         while ((who_node = uu_avl_walk_next(walk)) != NULL) {
5202                 const char *who_name = who_node->who_perm.who_name;
5203                 const char *nice_who_name = who_node->who_perm.who_ug_name;
5204                 uu_avl_t *avl = who_node->who_perm.who_deleg_perm_avl;
5205                 zfs_deleg_who_type_t who_type = who_node->who_perm.who_type;
5206                 char delim = ' ';
5207                 deleg_perm_node_t *deleg_node;
5208                 boolean_t prt_who = B_TRUE;
5209
5210                 for (deleg_node = uu_avl_first(avl);
5211                     deleg_node != NULL;
5212                     deleg_node = uu_avl_next(avl, deleg_node)) {
5213                         if (local != deleg_node->dpn_perm.dp_local ||
5214                             descend != deleg_node->dpn_perm.dp_descend)
5215                                 continue;
5216
5217                         if (prt_who) {
5218                                 const char *who = NULL;
5219                                 if (prt_title) {
5220                                         prt_title = B_FALSE;
5221                                         (void) printf(title);
5222                                 }
5223
5224                                 switch (who_type) {
5225                                 case ZFS_DELEG_USER_SETS:
5226                                 case ZFS_DELEG_USER:
5227                                         who = gettext("user");
5228                                         if (nice_who_name)
5229                                                 who_name  = nice_who_name;
5230                                         break;
5231                                 case ZFS_DELEG_GROUP_SETS:
5232                                 case ZFS_DELEG_GROUP:
5233                                         who = gettext("group");
5234                                         if (nice_who_name)
5235                                                 who_name  = nice_who_name;
5236                                         break;
5237                                 case ZFS_DELEG_EVERYONE_SETS:
5238                                 case ZFS_DELEG_EVERYONE:
5239                                         who = gettext("everyone");
5240                                         who_name = NULL;
5241                                 }
5242
5243                                 prt_who = B_FALSE;
5244                                 if (who_name == NULL)
5245                                         (void) printf("\t%s", who);
5246                                 else
5247                                         (void) printf("\t%s %s", who, who_name);
5248                         }
5249
5250                         (void) printf("%c%s", delim,
5251                             deleg_node->dpn_perm.dp_name);
5252                         delim = ',';
5253                 }
5254
5255                 if (!prt_who)
5256                         (void) printf("\n");
5257         }
5258
5259         uu_avl_walk_end(walk);
5260 }
5261
5262 static void
5263 print_fs_perms(fs_perm_set_t *fspset)
5264 {
5265         fs_perm_node_t *node = NULL;
5266         char buf[ZFS_MAXNAMELEN+32];
5267         const char *dsname = buf;
5268
5269         for (node = uu_list_first(fspset->fsps_list); node != NULL;
5270             node = uu_list_next(fspset->fsps_list, node)) {
5271                 uu_avl_t *sc_avl = node->fspn_fsperm.fsp_sc_avl;
5272                 uu_avl_t *uge_avl = node->fspn_fsperm.fsp_uge_avl;
5273                 int left = 0;
5274
5275                 (void) snprintf(buf, ZFS_MAXNAMELEN+32,
5276                     gettext("---- Permissions on %s "),
5277                     node->fspn_fsperm.fsp_name);
5278                 (void) printf(dsname);
5279                 left = 70 - strlen(buf);
5280                 while (left-- > 0)
5281                         (void) printf("-");
5282                 (void) printf("\n");
5283
5284                 print_set_creat_perms(sc_avl);
5285                 print_uge_deleg_perms(uge_avl, B_TRUE, B_FALSE,
5286                     gettext("Local permissions:\n"));
5287                 print_uge_deleg_perms(uge_avl, B_FALSE, B_TRUE,
5288                     gettext("Descendent permissions:\n"));
5289                 print_uge_deleg_perms(uge_avl, B_TRUE, B_TRUE,
5290                     gettext("Local+Descendent permissions:\n"));
5291         }
5292 }
5293
5294 static fs_perm_set_t fs_perm_set = { NULL, NULL, NULL, NULL };
5295
5296 struct deleg_perms {
5297         boolean_t un;
5298         nvlist_t *nvl;
5299 };
5300
5301 static int
5302 set_deleg_perms(zfs_handle_t *zhp, void *data)
5303 {
5304         struct deleg_perms *perms = (struct deleg_perms *)data;
5305         zfs_type_t zfs_type = zfs_get_type(zhp);
5306
5307         if (zfs_type != ZFS_TYPE_FILESYSTEM && zfs_type != ZFS_TYPE_VOLUME)
5308                 return (0);
5309
5310         return (zfs_set_fsacl(zhp, perms->un, perms->nvl));
5311 }
5312
5313 static int
5314 zfs_do_allow_unallow_impl(int argc, char **argv, boolean_t un)
5315 {
5316         zfs_handle_t *zhp;
5317         nvlist_t *perm_nvl = NULL;
5318         nvlist_t *update_perm_nvl = NULL;
5319         int error = 1;
5320         int c;
5321         struct allow_opts opts = { 0 };
5322
5323         const char *optstr = un ? "ldugecsrh" : "ldugecsh";
5324
5325         /* check opts */
5326         while ((c = getopt(argc, argv, optstr)) != -1) {
5327                 switch (c) {
5328                 case 'l':
5329                         opts.local = B_TRUE;
5330                         break;
5331                 case 'd':
5332                         opts.descend = B_TRUE;
5333                         break;
5334                 case 'u':
5335                         opts.user = B_TRUE;
5336                         break;
5337                 case 'g':
5338                         opts.group = B_TRUE;
5339                         break;
5340                 case 'e':
5341                         opts.everyone = B_TRUE;
5342                         break;
5343                 case 's':
5344                         opts.set = B_TRUE;
5345                         break;
5346                 case 'c':
5347                         opts.create = B_TRUE;
5348                         break;
5349                 case 'r':
5350                         opts.recursive = B_TRUE;
5351                         break;
5352                 case ':':
5353                         (void) fprintf(stderr, gettext("missing argument for "
5354                             "'%c' option\n"), optopt);
5355                         usage(B_FALSE);
5356                         break;
5357                 case 'h':
5358                         opts.prt_usage = B_TRUE;
5359                         break;
5360                 case '?':
5361                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5362                             optopt);
5363                         usage(B_FALSE);
5364                 }
5365         }
5366
5367         argc -= optind;
5368         argv += optind;
5369
5370         /* check arguments */
5371         parse_allow_args(argc, argv, un, &opts);
5372
5373         /* try to open the dataset */
5374         if ((zhp = zfs_open(g_zfs, opts.dataset, ZFS_TYPE_FILESYSTEM |
5375             ZFS_TYPE_VOLUME)) == NULL) {
5376                 (void) fprintf(stderr, "Failed to open dataset: %s\n",
5377                     opts.dataset);
5378                 return (-1);
5379         }
5380
5381         if (zfs_get_fsacl(zhp, &perm_nvl) != 0)
5382                 goto cleanup2;
5383
5384         fs_perm_set_init(&fs_perm_set);
5385         if (parse_fs_perm_set(&fs_perm_set, perm_nvl) != 0) {
5386                 (void) fprintf(stderr, "Failed to parse fsacl permissions\n");
5387                 goto cleanup1;
5388         }
5389
5390         if (opts.prt_perms)
5391                 print_fs_perms(&fs_perm_set);
5392         else {
5393                 (void) construct_fsacl_list(un, &opts, &update_perm_nvl);
5394                 if (zfs_set_fsacl(zhp, un, update_perm_nvl) != 0)
5395                         goto cleanup0;
5396
5397                 if (un && opts.recursive) {
5398                         struct deleg_perms data = { un, update_perm_nvl };
5399                         if (zfs_iter_filesystems(zhp, set_deleg_perms,
5400                             &data) != 0)
5401                                 goto cleanup0;
5402                 }
5403         }
5404
5405         error = 0;
5406
5407 cleanup0:
5408         nvlist_free(perm_nvl);
5409         if (update_perm_nvl != NULL)
5410                 nvlist_free(update_perm_nvl);
5411 cleanup1:
5412         fs_perm_set_fini(&fs_perm_set);
5413 cleanup2:
5414         zfs_close(zhp);
5415
5416         return (error);
5417 }
5418
5419 static int
5420 zfs_do_allow(int argc, char **argv)
5421 {
5422         return (zfs_do_allow_unallow_impl(argc, argv, B_FALSE));
5423 }
5424
5425 static int
5426 zfs_do_unallow(int argc, char **argv)
5427 {
5428         return (zfs_do_allow_unallow_impl(argc, argv, B_TRUE));
5429 }
5430
5431 static int
5432 zfs_do_hold_rele_impl(int argc, char **argv, boolean_t holding)
5433 {
5434         int errors = 0;
5435         int i;
5436         const char *tag;
5437         boolean_t recursive = B_FALSE;
5438         const char *opts = holding ? "rt" : "r";
5439         int c;
5440
5441         /* check options */
5442         while ((c = getopt(argc, argv, opts)) != -1) {
5443                 switch (c) {
5444                 case 'r':
5445                         recursive = B_TRUE;
5446                         break;
5447                 case '?':
5448                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5449                             optopt);
5450                         usage(B_FALSE);
5451                 }
5452         }
5453
5454         argc -= optind;
5455         argv += optind;
5456
5457         /* check number of arguments */
5458         if (argc < 2)
5459                 usage(B_FALSE);
5460
5461         tag = argv[0];
5462         --argc;
5463         ++argv;
5464
5465         if (holding && tag[0] == '.') {
5466                 /* tags starting with '.' are reserved for libzfs */
5467                 (void) fprintf(stderr, gettext("tag may not start with '.'\n"));
5468                 usage(B_FALSE);
5469         }
5470
5471         for (i = 0; i < argc; ++i) {
5472                 zfs_handle_t *zhp;
5473                 char parent[ZFS_MAXNAMELEN];
5474                 const char *delim;
5475                 char *path = argv[i];
5476
5477                 delim = strchr(path, '@');
5478                 if (delim == NULL) {
5479                         (void) fprintf(stderr,
5480                             gettext("'%s' is not a snapshot\n"), path);
5481                         ++errors;
5482                         continue;
5483                 }
5484                 (void) strncpy(parent, path, delim - path);
5485                 parent[delim - path] = '\0';
5486
5487                 zhp = zfs_open(g_zfs, parent,
5488                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
5489                 if (zhp == NULL) {
5490                         ++errors;
5491                         continue;
5492                 }
5493                 if (holding) {
5494                         if (zfs_hold(zhp, delim+1, tag, recursive, -1) != 0)
5495                                 ++errors;
5496                 } else {
5497                         if (zfs_release(zhp, delim+1, tag, recursive) != 0)
5498                                 ++errors;
5499                 }
5500                 zfs_close(zhp);
5501         }
5502
5503         return (errors != 0);
5504 }
5505
5506 /*
5507  * zfs hold [-r] [-t] <tag> <snap> ...
5508  *
5509  *      -r      Recursively hold
5510  *
5511  * Apply a user-hold with the given tag to the list of snapshots.
5512  */
5513 static int
5514 zfs_do_hold(int argc, char **argv)
5515 {
5516         return (zfs_do_hold_rele_impl(argc, argv, B_TRUE));
5517 }
5518
5519 /*
5520  * zfs release [-r] <tag> <snap> ...
5521  *
5522  *      -r      Recursively release
5523  *
5524  * Release a user-hold with the given tag from the list of snapshots.
5525  */
5526 static int
5527 zfs_do_release(int argc, char **argv)
5528 {
5529         return (zfs_do_hold_rele_impl(argc, argv, B_FALSE));
5530 }
5531
5532 typedef struct holds_cbdata {
5533         boolean_t       cb_recursive;
5534         const char      *cb_snapname;
5535         nvlist_t        **cb_nvlp;
5536         size_t          cb_max_namelen;
5537         size_t          cb_max_taglen;
5538 } holds_cbdata_t;
5539
5540 #define STRFTIME_FMT_STR "%a %b %e %k:%M %Y"
5541 #define DATETIME_BUF_LEN (32)
5542 /*
5543  *
5544  */
5545 static void
5546 print_holds(boolean_t scripted, size_t nwidth, size_t tagwidth, nvlist_t *nvl)
5547 {
5548         int i;
5549         nvpair_t *nvp = NULL;
5550         char *hdr_cols[] = { "NAME", "TAG", "TIMESTAMP" };
5551         const char *col;
5552
5553         if (!scripted) {
5554                 for (i = 0; i < 3; i++) {
5555                         col = gettext(hdr_cols[i]);
5556                         if (i < 2)
5557                                 (void) printf("%-*s  ", i ? tagwidth : nwidth,
5558                                     col);
5559                         else
5560                                 (void) printf("%s\n", col);
5561                 }
5562         }
5563
5564         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
5565                 char *zname = nvpair_name(nvp);
5566                 nvlist_t *nvl2;
5567                 nvpair_t *nvp2 = NULL;
5568                 (void) nvpair_value_nvlist(nvp, &nvl2);
5569                 while ((nvp2 = nvlist_next_nvpair(nvl2, nvp2)) != NULL) {
5570                         char tsbuf[DATETIME_BUF_LEN];
5571                         char *tagname = nvpair_name(nvp2);
5572                         uint64_t val = 0;
5573                         time_t time;
5574                         struct tm t;
5575                         char sep = scripted ? '\t' : ' ';
5576                         size_t sepnum = scripted ? 1 : 2;
5577
5578                         (void) nvpair_value_uint64(nvp2, &val);
5579                         time = (time_t)val;
5580                         (void) localtime_r(&time, &t);
5581                         (void) strftime(tsbuf, DATETIME_BUF_LEN,
5582                             gettext(STRFTIME_FMT_STR), &t);
5583
5584                         (void) printf("%-*s%*c%-*s%*c%s\n", nwidth, zname,
5585                             sepnum, sep, tagwidth, tagname, sepnum, sep, tsbuf);
5586                 }
5587         }
5588 }
5589
5590 /*
5591  * Generic callback function to list a dataset or snapshot.
5592  */
5593 static int
5594 holds_callback(zfs_handle_t *zhp, void *data)
5595 {
5596         holds_cbdata_t *cbp = data;
5597         nvlist_t *top_nvl = *cbp->cb_nvlp;
5598         nvlist_t *nvl = NULL;
5599         nvpair_t *nvp = NULL;
5600         const char *zname = zfs_get_name(zhp);
5601         size_t znamelen = strnlen(zname, ZFS_MAXNAMELEN);
5602
5603         if (cbp->cb_recursive) {
5604                 const char *snapname;
5605                 char *delim  = strchr(zname, '@');
5606                 if (delim == NULL)
5607                         return (0);
5608
5609                 snapname = delim + 1;
5610                 if (strcmp(cbp->cb_snapname, snapname))
5611                         return (0);
5612         }
5613
5614         if (zfs_get_holds(zhp, &nvl) != 0)
5615                 return (-1);
5616
5617         if (znamelen > cbp->cb_max_namelen)
5618                 cbp->cb_max_namelen  = znamelen;
5619
5620         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
5621                 const char *tag = nvpair_name(nvp);
5622                 size_t taglen = strnlen(tag, MAXNAMELEN);
5623                 if (taglen > cbp->cb_max_taglen)
5624                         cbp->cb_max_taglen  = taglen;
5625         }
5626
5627         return (nvlist_add_nvlist(top_nvl, zname, nvl));
5628 }
5629
5630 /*
5631  * zfs holds [-r] <snap> ...
5632  *
5633  *      -r      Recursively hold
5634  */
5635 static int
5636 zfs_do_holds(int argc, char **argv)
5637 {
5638         int errors = 0;
5639         int c;
5640         int i;
5641         boolean_t scripted = B_FALSE;
5642         boolean_t recursive = B_FALSE;
5643         const char *opts = "rH";
5644         nvlist_t *nvl;
5645
5646         int types = ZFS_TYPE_SNAPSHOT;
5647         holds_cbdata_t cb = { 0 };
5648
5649         int limit = 0;
5650         int ret = 0;
5651         int flags = 0;
5652
5653         /* check options */
5654         while ((c = getopt(argc, argv, opts)) != -1) {
5655                 switch (c) {
5656                 case 'r':
5657                         recursive = B_TRUE;
5658                         break;
5659                 case 'H':
5660                         scripted = B_TRUE;
5661                         break;
5662                 case '?':
5663                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5664                             optopt);
5665                         usage(B_FALSE);
5666                 }
5667         }
5668
5669         if (recursive) {
5670                 types |= ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME;
5671                 flags |= ZFS_ITER_RECURSE;
5672         }
5673
5674         argc -= optind;
5675         argv += optind;
5676
5677         /* check number of arguments */
5678         if (argc < 1)
5679                 usage(B_FALSE);
5680
5681         if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0)
5682                 nomem();
5683
5684         for (i = 0; i < argc; ++i) {
5685                 char *snapshot = argv[i];
5686                 const char *delim;
5687                 const char *snapname;
5688
5689                 delim = strchr(snapshot, '@');
5690                 if (delim == NULL) {
5691                         (void) fprintf(stderr,
5692                             gettext("'%s' is not a snapshot\n"), snapshot);
5693                         ++errors;
5694                         continue;
5695                 }
5696                 snapname = delim + 1;
5697                 if (recursive)
5698                         snapshot[delim - snapshot] = '\0';
5699
5700                 cb.cb_recursive = recursive;
5701                 cb.cb_snapname = snapname;
5702                 cb.cb_nvlp = &nvl;
5703
5704                 /*
5705                  *  1. collect holds data, set format options
5706                  */
5707                 ret = zfs_for_each(argc, argv, flags, types, NULL, NULL, limit,
5708                     holds_callback, &cb);
5709                 if (ret != 0)
5710                         ++errors;
5711         }
5712
5713         /*
5714          *  2. print holds data
5715          */
5716         print_holds(scripted, cb.cb_max_namelen, cb.cb_max_taglen, nvl);
5717
5718         if (nvlist_empty(nvl))
5719                 (void) printf(gettext("no datasets available\n"));
5720
5721         nvlist_free(nvl);
5722
5723         return (0 != errors);
5724 }
5725
5726 #define CHECK_SPINNER 30
5727 #define SPINNER_TIME 3          /* seconds */
5728 #define MOUNT_TIME 5            /* seconds */
5729
5730 static int
5731 get_one_dataset(zfs_handle_t *zhp, void *data)
5732 {
5733         static char *spin[] = { "-", "\\", "|", "/" };
5734         static int spinval = 0;
5735         static int spincheck = 0;
5736         static time_t last_spin_time = (time_t)0;
5737         get_all_cb_t *cbp = data;
5738         zfs_type_t type = zfs_get_type(zhp);
5739
5740         if (cbp->cb_verbose) {
5741                 if (--spincheck < 0) {
5742                         time_t now = time(NULL);
5743                         if (last_spin_time + SPINNER_TIME < now) {
5744                                 update_progress(spin[spinval++ % 4]);
5745                                 last_spin_time = now;
5746                         }
5747                         spincheck = CHECK_SPINNER;
5748                 }
5749         }
5750
5751         /*
5752          * Interate over any nested datasets.
5753          */
5754         if (zfs_iter_filesystems(zhp, get_one_dataset, data) != 0) {
5755                 zfs_close(zhp);
5756                 return (1);
5757         }
5758
5759         /*
5760          * Skip any datasets whose type does not match.
5761          */
5762         if ((type & ZFS_TYPE_FILESYSTEM) == 0) {
5763                 zfs_close(zhp);
5764                 return (0);
5765         }
5766         libzfs_add_handle(cbp, zhp);
5767         assert(cbp->cb_used <= cbp->cb_alloc);
5768
5769         return (0);
5770 }
5771
5772 static void
5773 get_all_datasets(zfs_handle_t ***dslist, size_t *count, boolean_t verbose)
5774 {
5775         get_all_cb_t cb = { 0 };
5776         cb.cb_verbose = verbose;
5777         cb.cb_getone = get_one_dataset;
5778
5779         if (verbose)
5780                 set_progress_header(gettext("Reading ZFS config"));
5781         (void) zfs_iter_root(g_zfs, get_one_dataset, &cb);
5782
5783         *dslist = cb.cb_handles;
5784         *count = cb.cb_used;
5785
5786         if (verbose)
5787                 finish_progress(gettext("done."));
5788 }
5789
5790 /*
5791  * Generic callback for sharing or mounting filesystems.  Because the code is so
5792  * similar, we have a common function with an extra parameter to determine which
5793  * mode we are using.
5794  */
5795 #define OP_SHARE        0x1
5796 #define OP_MOUNT        0x2
5797
5798 /*
5799  * Share or mount a dataset.
5800  */
5801 static int
5802 share_mount_one(zfs_handle_t *zhp, int op, int flags, char *protocol,
5803     boolean_t explicit, const char *options)
5804 {
5805         char mountpoint[ZFS_MAXPROPLEN];
5806         char shareopts[ZFS_MAXPROPLEN];
5807         char smbshareopts[ZFS_MAXPROPLEN];
5808         const char *cmdname = op == OP_SHARE ? "share" : "mount";
5809         struct mnttab mnt;
5810         uint64_t zoned, canmount;
5811         boolean_t shared_nfs, shared_smb;
5812
5813         assert(zfs_get_type(zhp) & ZFS_TYPE_FILESYSTEM);
5814
5815         /*
5816          * Check to make sure we can mount/share this dataset.  If we
5817          * are in the global zone and the filesystem is exported to a
5818          * local zone, or if we are in a local zone and the
5819          * filesystem is not exported, then it is an error.
5820          */
5821         zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED);
5822
5823         if (zoned && getzoneid() == GLOBAL_ZONEID) {
5824                 if (!explicit)
5825                         return (0);
5826
5827                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5828                     "dataset is exported to a local zone\n"), cmdname,
5829                     zfs_get_name(zhp));
5830                 return (1);
5831
5832         } else if (!zoned && getzoneid() != GLOBAL_ZONEID) {
5833                 if (!explicit)
5834                         return (0);
5835
5836                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5837                     "permission denied\n"), cmdname,
5838                     zfs_get_name(zhp));
5839                 return (1);
5840         }
5841
5842         /*
5843          * Ignore any filesystems which don't apply to us. This
5844          * includes those with a legacy mountpoint, or those with
5845          * legacy share options.
5846          */
5847         verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
5848             sizeof (mountpoint), NULL, NULL, 0, B_FALSE) == 0);
5849         verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, shareopts,
5850             sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0);
5851         verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshareopts,
5852             sizeof (smbshareopts), NULL, NULL, 0, B_FALSE) == 0);
5853
5854         if (op == OP_SHARE && strcmp(shareopts, "off") == 0 &&
5855             strcmp(smbshareopts, "off") == 0) {
5856                 if (!explicit)
5857                         return (0);
5858
5859                 (void) fprintf(stderr, gettext("cannot share '%s': "
5860                     "legacy share\n"), zfs_get_name(zhp));
5861                 (void) fprintf(stderr, gettext("to "
5862                     "share this filesystem set "
5863                     "sharenfs property on\n"));
5864                 return (1);
5865         }
5866
5867         /*
5868          * We cannot share or mount legacy filesystems. If the
5869          * shareopts is non-legacy but the mountpoint is legacy, we
5870          * treat it as a legacy share.
5871          */
5872         if (strcmp(mountpoint, "legacy") == 0) {
5873                 if (!explicit)
5874                         return (0);
5875
5876                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5877                     "legacy mountpoint\n"), cmdname, zfs_get_name(zhp));
5878                 (void) fprintf(stderr, gettext("use %s(8) to "
5879                     "%s this filesystem\n"), cmdname, cmdname);
5880                 return (1);
5881         }
5882
5883         if (strcmp(mountpoint, "none") == 0) {
5884                 if (!explicit)
5885                         return (0);
5886
5887                 (void) fprintf(stderr, gettext("cannot %s '%s': no "
5888                     "mountpoint set\n"), cmdname, zfs_get_name(zhp));
5889                 return (1);
5890         }
5891
5892         /*
5893          * canmount     explicit        outcome
5894          * on           no              pass through
5895          * on           yes             pass through
5896          * off          no              return 0
5897          * off          yes             display error, return 1
5898          * noauto       no              return 0
5899          * noauto       yes             pass through
5900          */
5901         canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT);
5902         if (canmount == ZFS_CANMOUNT_OFF) {
5903                 if (!explicit)
5904                         return (0);
5905
5906                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5907                     "'canmount' property is set to 'off'\n"), cmdname,
5908                     zfs_get_name(zhp));
5909                 return (1);
5910         } else if (canmount == ZFS_CANMOUNT_NOAUTO && !explicit) {
5911                 return (0);
5912         }
5913
5914         /*
5915          * If this filesystem is inconsistent and has a receive resume
5916          * token, we can not mount it.
5917          */
5918         if (zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) &&
5919             zfs_prop_get(zhp, ZFS_PROP_RECEIVE_RESUME_TOKEN,
5920             NULL, 0, NULL, NULL, 0, B_TRUE) == 0) {
5921                 if (!explicit)
5922                         return (0);
5923
5924                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5925                     "Contains partially-completed state from "
5926                     "\"zfs receive -r\", which can be resumed with "
5927                     "\"zfs send -t\"\n"),
5928                     cmdname, zfs_get_name(zhp));
5929                 return (1);
5930         }
5931
5932         /*
5933          * At this point, we have verified that the mountpoint and/or
5934          * shareopts are appropriate for auto management. If the
5935          * filesystem is already mounted or shared, return (failing
5936          * for explicit requests); otherwise mount or share the
5937          * filesystem.
5938          */
5939         switch (op) {
5940         case OP_SHARE:
5941
5942                 shared_nfs = zfs_is_shared_nfs(zhp, NULL);
5943                 shared_smb = zfs_is_shared_smb(zhp, NULL);
5944
5945                 if (shared_nfs && shared_smb ||
5946                     (shared_nfs && strcmp(shareopts, "on") == 0 &&
5947                     strcmp(smbshareopts, "off") == 0) ||
5948                     (shared_smb && strcmp(smbshareopts, "on") == 0 &&
5949                     strcmp(shareopts, "off") == 0)) {
5950                         if (!explicit)
5951                                 return (0);
5952
5953                         (void) fprintf(stderr, gettext("cannot share "
5954                             "'%s': filesystem already shared\n"),
5955                             zfs_get_name(zhp));
5956                         return (1);
5957                 }
5958
5959                 if (!zfs_is_mounted(zhp, NULL) &&
5960                     zfs_mount(zhp, NULL, 0) != 0)
5961                         return (1);
5962
5963                 if (protocol == NULL) {
5964                         if (zfs_shareall(zhp) != 0)
5965                                 return (1);
5966                 } else if (strcmp(protocol, "nfs") == 0) {
5967                         if (zfs_share_nfs(zhp))
5968                                 return (1);
5969                 } else if (strcmp(protocol, "smb") == 0) {
5970                         if (zfs_share_smb(zhp))
5971                                 return (1);
5972                 } else {
5973                         (void) fprintf(stderr, gettext("cannot share "
5974                             "'%s': invalid share type '%s' "
5975                             "specified\n"),
5976                             zfs_get_name(zhp), protocol);
5977                         return (1);
5978                 }
5979
5980                 break;
5981
5982         case OP_MOUNT:
5983                 if (options == NULL)
5984                         mnt.mnt_mntopts = "";
5985                 else
5986                         mnt.mnt_mntopts = (char *)options;
5987
5988                 if (!hasmntopt(&mnt, MNTOPT_REMOUNT) &&
5989                     zfs_is_mounted(zhp, NULL)) {
5990                         if (!explicit)
5991                                 return (0);
5992
5993                         (void) fprintf(stderr, gettext("cannot mount "
5994                             "'%s': filesystem already mounted\n"),
5995                             zfs_get_name(zhp));
5996                         return (1);
5997                 }
5998
5999                 if (zfs_mount(zhp, options, flags) != 0)
6000                         return (1);
6001                 break;
6002         }
6003
6004         return (0);
6005 }
6006
6007 /*
6008  * Reports progress in the form "(current/total)".  Not thread-safe.
6009  */
6010 static void
6011 report_mount_progress(int current, int total)
6012 {
6013         static time_t last_progress_time = 0;
6014         time_t now = time(NULL);
6015         char info[32];
6016
6017         /* report 1..n instead of 0..n-1 */
6018         ++current;
6019
6020         /* display header if we're here for the first time */
6021         if (current == 1) {
6022                 set_progress_header(gettext("Mounting ZFS filesystems"));
6023         } else if (current != total && last_progress_time + MOUNT_TIME >= now) {
6024                 /* too soon to report again */
6025                 return;
6026         }
6027
6028         last_progress_time = now;
6029
6030         (void) sprintf(info, "(%d/%d)", current, total);
6031
6032         if (current == total)
6033                 finish_progress(info);
6034         else
6035                 update_progress(info);
6036 }
6037
6038 static void
6039 append_options(char *mntopts, char *newopts)
6040 {
6041         int len = strlen(mntopts);
6042
6043         /* original length plus new string to append plus 1 for the comma */
6044         if (len + 1 + strlen(newopts) >= MNT_LINE_MAX) {
6045                 (void) fprintf(stderr, gettext("the opts argument for "
6046                     "'%c' option is too long (more than %d chars)\n"),
6047                     "-o", MNT_LINE_MAX);
6048                 usage(B_FALSE);
6049         }
6050
6051         if (*mntopts)
6052                 mntopts[len++] = ',';
6053
6054         (void) strcpy(&mntopts[len], newopts);
6055 }
6056
6057 static int
6058 share_mount(int op, int argc, char **argv)
6059 {
6060         int do_all = 0;
6061         boolean_t verbose = B_FALSE;
6062         int c, ret = 0;
6063         char *options = NULL;
6064         int flags = 0;
6065
6066         /* check options */
6067         while ((c = getopt(argc, argv, op == OP_MOUNT ? ":avo:O" : "a"))
6068             != -1) {
6069                 switch (c) {
6070                 case 'a':
6071                         do_all = 1;
6072                         break;
6073                 case 'v':
6074                         verbose = B_TRUE;
6075                         break;
6076                 case 'o':
6077                         if (*optarg == '\0') {
6078                                 (void) fprintf(stderr, gettext("empty mount "
6079                                     "options (-o) specified\n"));
6080                                 usage(B_FALSE);
6081                         }
6082
6083                         if (options == NULL)
6084                                 options = safe_malloc(MNT_LINE_MAX + 1);
6085
6086                         /* option validation is done later */
6087                         append_options(options, optarg);
6088                         break;
6089
6090                 case 'O':
6091                         warnx("no overlay mounts support on FreeBSD, ignoring");
6092                         break;
6093                 case ':':
6094                         (void) fprintf(stderr, gettext("missing argument for "
6095                             "'%c' option\n"), optopt);
6096                         usage(B_FALSE);
6097                         break;
6098                 case '?':
6099                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6100                             optopt);
6101                         usage(B_FALSE);
6102                 }
6103         }
6104
6105         argc -= optind;
6106         argv += optind;
6107
6108         /* check number of arguments */
6109         if (do_all) {
6110                 zfs_handle_t **dslist = NULL;
6111                 size_t i, count = 0;
6112                 char *protocol = NULL;
6113
6114                 if (op == OP_SHARE && argc > 0) {
6115                         if (strcmp(argv[0], "nfs") != 0 &&
6116                             strcmp(argv[0], "smb") != 0) {
6117                                 (void) fprintf(stderr, gettext("share type "
6118                                     "must be 'nfs' or 'smb'\n"));
6119                                 usage(B_FALSE);
6120                         }
6121                         protocol = argv[0];
6122                         argc--;
6123                         argv++;
6124                 }
6125
6126                 if (argc != 0) {
6127                         (void) fprintf(stderr, gettext("too many arguments\n"));
6128                         usage(B_FALSE);
6129                 }
6130
6131                 start_progress_timer();
6132                 get_all_datasets(&dslist, &count, verbose);
6133
6134                 if (count == 0)
6135                         return (0);
6136
6137                 qsort(dslist, count, sizeof (void *), libzfs_dataset_cmp);
6138
6139                 for (i = 0; i < count; i++) {
6140                         if (verbose)
6141                                 report_mount_progress(i, count);
6142
6143                         if (share_mount_one(dslist[i], op, flags, protocol,
6144                             B_FALSE, options) != 0)
6145                                 ret = 1;
6146                         zfs_close(dslist[i]);
6147                 }
6148
6149                 free(dslist);
6150         } else if (argc == 0) {
6151                 struct mnttab entry;
6152
6153                 if ((op == OP_SHARE) || (options != NULL)) {
6154                         (void) fprintf(stderr, gettext("missing filesystem "
6155                             "argument (specify -a for all)\n"));
6156                         usage(B_FALSE);
6157                 }
6158
6159                 /*
6160                  * When mount is given no arguments, go through /etc/mnttab and
6161                  * display any active ZFS mounts.  We hide any snapshots, since
6162                  * they are controlled automatically.
6163                  */
6164                 rewind(mnttab_file);
6165                 while (getmntent(mnttab_file, &entry) == 0) {
6166                         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0 ||
6167                             strchr(entry.mnt_special, '@') != NULL)
6168                                 continue;
6169
6170                         (void) printf("%-30s  %s\n", entry.mnt_special,
6171                             entry.mnt_mountp);
6172                 }
6173
6174         } else {
6175                 zfs_handle_t *zhp;
6176
6177                 if (argc > 1) {
6178                         (void) fprintf(stderr,
6179                             gettext("too many arguments\n"));
6180                         usage(B_FALSE);
6181                 }
6182
6183                 if ((zhp = zfs_open(g_zfs, argv[0],
6184                     ZFS_TYPE_FILESYSTEM)) == NULL) {
6185                         ret = 1;
6186                 } else {
6187                         ret = share_mount_one(zhp, op, flags, NULL, B_TRUE,
6188                             options);
6189                         zfs_close(zhp);
6190                 }
6191         }
6192
6193         return (ret);
6194 }
6195
6196 /*
6197  * zfs mount -a [nfs]
6198  * zfs mount filesystem
6199  *
6200  * Mount all filesystems, or mount the given filesystem.
6201  */
6202 static int
6203 zfs_do_mount(int argc, char **argv)
6204 {
6205         return (share_mount(OP_MOUNT, argc, argv));
6206 }
6207
6208 /*
6209  * zfs share -a [nfs | smb]
6210  * zfs share filesystem
6211  *
6212  * Share all filesystems, or share the given filesystem.
6213  */
6214 static int
6215 zfs_do_share(int argc, char **argv)
6216 {
6217         return (share_mount(OP_SHARE, argc, argv));
6218 }
6219
6220 typedef struct unshare_unmount_node {
6221         zfs_handle_t    *un_zhp;
6222         char            *un_mountp;
6223         uu_avl_node_t   un_avlnode;
6224 } unshare_unmount_node_t;
6225
6226 /* ARGSUSED */
6227 static int
6228 unshare_unmount_compare(const void *larg, const void *rarg, void *unused)
6229 {
6230         const unshare_unmount_node_t *l = larg;
6231         const unshare_unmount_node_t *r = rarg;
6232
6233         return (strcmp(l->un_mountp, r->un_mountp));
6234 }
6235
6236 /*
6237  * Convenience routine used by zfs_do_umount() and manual_unmount().  Given an
6238  * absolute path, find the entry /etc/mnttab, verify that its a ZFS filesystem,
6239  * and unmount it appropriately.
6240  */
6241 static int
6242 unshare_unmount_path(int op, char *path, int flags, boolean_t is_manual)
6243 {
6244         zfs_handle_t *zhp;
6245         int ret = 0;
6246         struct stat64 statbuf;
6247         struct extmnttab entry;
6248         const char *cmdname = (op == OP_SHARE) ? "unshare" : "unmount";
6249         ino_t path_inode;
6250
6251         /*
6252          * Search for the path in /etc/mnttab.  Rather than looking for the
6253          * specific path, which can be fooled by non-standard paths (i.e. ".."
6254          * or "//"), we stat() the path and search for the corresponding
6255          * (major,minor) device pair.
6256          */
6257         if (stat64(path, &statbuf) != 0) {
6258                 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
6259                     cmdname, path, strerror(errno));
6260                 return (1);
6261         }
6262         path_inode = statbuf.st_ino;
6263
6264         /*
6265          * Search for the given (major,minor) pair in the mount table.
6266          */
6267 #ifdef sun
6268         rewind(mnttab_file);
6269         while ((ret = getextmntent(mnttab_file, &entry, 0)) == 0) {
6270                 if (entry.mnt_major == major(statbuf.st_dev) &&
6271                     entry.mnt_minor == minor(statbuf.st_dev))
6272                         break;
6273         }
6274 #else
6275         {
6276                 struct statfs sfs;
6277
6278                 if (statfs(path, &sfs) != 0) {
6279                         (void) fprintf(stderr, "%s: %s\n", path,
6280                             strerror(errno));
6281                         ret = -1;
6282                 }
6283                 statfs2mnttab(&sfs, &entry);
6284         }
6285 #endif
6286         if (ret != 0) {
6287                 if (op == OP_SHARE) {
6288                         (void) fprintf(stderr, gettext("cannot %s '%s': not "
6289                             "currently mounted\n"), cmdname, path);
6290                         return (1);
6291                 }
6292                 (void) fprintf(stderr, gettext("warning: %s not in mnttab\n"),
6293                     path);
6294                 if ((ret = umount2(path, flags)) != 0)
6295                         (void) fprintf(stderr, gettext("%s: %s\n"), path,
6296                             strerror(errno));
6297                 return (ret != 0);
6298         }
6299
6300         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) {
6301                 (void) fprintf(stderr, gettext("cannot %s '%s': not a ZFS "
6302                     "filesystem\n"), cmdname, path);
6303                 return (1);
6304         }
6305
6306         if ((zhp = zfs_open(g_zfs, entry.mnt_special,
6307             ZFS_TYPE_FILESYSTEM)) == NULL)
6308                 return (1);
6309
6310         ret = 1;
6311         if (stat64(entry.mnt_mountp, &statbuf) != 0) {
6312                 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
6313                     cmdname, path, strerror(errno));
6314                 goto out;
6315         } else if (statbuf.st_ino != path_inode) {
6316                 (void) fprintf(stderr, gettext("cannot "
6317                     "%s '%s': not a mountpoint\n"), cmdname, path);
6318                 goto out;
6319         }
6320
6321         if (op == OP_SHARE) {
6322                 char nfs_mnt_prop[ZFS_MAXPROPLEN];
6323                 char smbshare_prop[ZFS_MAXPROPLEN];
6324
6325                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, nfs_mnt_prop,
6326                     sizeof (nfs_mnt_prop), NULL, NULL, 0, B_FALSE) == 0);
6327                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshare_prop,
6328                     sizeof (smbshare_prop), NULL, NULL, 0, B_FALSE) == 0);
6329
6330                 if (strcmp(nfs_mnt_prop, "off") == 0 &&
6331                     strcmp(smbshare_prop, "off") == 0) {
6332                         (void) fprintf(stderr, gettext("cannot unshare "
6333                             "'%s': legacy share\n"), path);
6334 #ifdef illumos
6335                         (void) fprintf(stderr, gettext("use "
6336                             "unshare(1M) to unshare this filesystem\n"));
6337 #endif
6338                 } else if (!zfs_is_shared(zhp)) {
6339                         (void) fprintf(stderr, gettext("cannot unshare '%s': "
6340                             "not currently shared\n"), path);
6341                 } else {
6342                         ret = zfs_unshareall_bypath(zhp, path);
6343                 }
6344         } else {
6345                 char mtpt_prop[ZFS_MAXPROPLEN];
6346
6347                 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mtpt_prop,
6348                     sizeof (mtpt_prop), NULL, NULL, 0, B_FALSE) == 0);
6349
6350                 if (is_manual) {
6351                         ret = zfs_unmount(zhp, NULL, flags);
6352                 } else if (strcmp(mtpt_prop, "legacy") == 0) {
6353                         (void) fprintf(stderr, gettext("cannot unmount "
6354                             "'%s': legacy mountpoint\n"),
6355                             zfs_get_name(zhp));
6356                         (void) fprintf(stderr, gettext("use umount(8) "
6357                             "to unmount this filesystem\n"));
6358                 } else {
6359                         ret = zfs_unmountall(zhp, flags);
6360                 }
6361         }
6362
6363 out:
6364         zfs_close(zhp);
6365
6366         return (ret != 0);
6367 }
6368
6369 /*
6370  * Generic callback for unsharing or unmounting a filesystem.
6371  */
6372 static int
6373 unshare_unmount(int op, int argc, char **argv)
6374 {
6375         int do_all = 0;
6376         int flags = 0;
6377         int ret = 0;
6378         int c;
6379         zfs_handle_t *zhp;
6380         char nfs_mnt_prop[ZFS_MAXPROPLEN];
6381         char sharesmb[ZFS_MAXPROPLEN];
6382
6383         /* check options */
6384         while ((c = getopt(argc, argv, op == OP_SHARE ? "a" : "af")) != -1) {
6385                 switch (c) {
6386                 case 'a':
6387                         do_all = 1;
6388                         break;
6389                 case 'f':
6390                         flags = MS_FORCE;
6391                         break;
6392                 case '?':
6393                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6394                             optopt);
6395                         usage(B_FALSE);
6396                 }
6397         }
6398
6399         argc -= optind;
6400         argv += optind;
6401
6402         if (do_all) {
6403                 /*
6404                  * We could make use of zfs_for_each() to walk all datasets in
6405                  * the system, but this would be very inefficient, especially
6406                  * since we would have to linearly search /etc/mnttab for each
6407                  * one.  Instead, do one pass through /etc/mnttab looking for
6408                  * zfs entries and call zfs_unmount() for each one.
6409                  *
6410                  * Things get a little tricky if the administrator has created
6411                  * mountpoints beneath other ZFS filesystems.  In this case, we
6412                  * have to unmount the deepest filesystems first.  To accomplish
6413                  * this, we place all the mountpoints in an AVL tree sorted by
6414                  * the special type (dataset name), and walk the result in
6415                  * reverse to make sure to get any snapshots first.
6416                  */
6417                 struct mnttab entry;
6418                 uu_avl_pool_t *pool;
6419                 uu_avl_t *tree;
6420                 unshare_unmount_node_t *node;
6421                 uu_avl_index_t idx;
6422                 uu_avl_walk_t *walk;
6423
6424                 if (argc != 0) {
6425                         (void) fprintf(stderr, gettext("too many arguments\n"));
6426                         usage(B_FALSE);
6427                 }
6428
6429                 if (((pool = uu_avl_pool_create("unmount_pool",
6430                     sizeof (unshare_unmount_node_t),
6431                     offsetof(unshare_unmount_node_t, un_avlnode),
6432                     unshare_unmount_compare, UU_DEFAULT)) == NULL) ||
6433                     ((tree = uu_avl_create(pool, NULL, UU_DEFAULT)) == NULL))
6434                         nomem();
6435
6436                 rewind(mnttab_file);
6437                 while (getmntent(mnttab_file, &entry) == 0) {
6438
6439                         /* ignore non-ZFS entries */
6440                         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0)
6441                                 continue;
6442
6443                         /* ignore snapshots */
6444                         if (strchr(entry.mnt_special, '@') != NULL)
6445                                 continue;
6446
6447                         if ((zhp = zfs_open(g_zfs, entry.mnt_special,
6448                             ZFS_TYPE_FILESYSTEM)) == NULL) {
6449                                 ret = 1;
6450                                 continue;
6451                         }
6452
6453                         switch (op) {
6454                         case OP_SHARE:
6455                                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
6456                                     nfs_mnt_prop,
6457                                     sizeof (nfs_mnt_prop),
6458                                     NULL, NULL, 0, B_FALSE) == 0);
6459                                 if (strcmp(nfs_mnt_prop, "off") != 0)
6460                                         break;
6461                                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
6462                                     nfs_mnt_prop,
6463                                     sizeof (nfs_mnt_prop),
6464                                     NULL, NULL, 0, B_FALSE) == 0);
6465                                 if (strcmp(nfs_mnt_prop, "off") == 0)
6466                                         continue;
6467                                 break;
6468                         case OP_MOUNT:
6469                                 /* Ignore legacy mounts */
6470                                 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT,
6471                                     nfs_mnt_prop,
6472                                     sizeof (nfs_mnt_prop),
6473                                     NULL, NULL, 0, B_FALSE) == 0);
6474                                 if (strcmp(nfs_mnt_prop, "legacy") == 0)
6475                                         continue;
6476                                 /* Ignore canmount=noauto mounts */
6477                                 if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) ==
6478                                     ZFS_CANMOUNT_NOAUTO)
6479                                         continue;
6480                         default:
6481                                 break;
6482                         }
6483
6484                         node = safe_malloc(sizeof (unshare_unmount_node_t));
6485                         node->un_zhp = zhp;
6486                         node->un_mountp = safe_strdup(entry.mnt_mountp);
6487
6488                         uu_avl_node_init(node, &node->un_avlnode, pool);
6489
6490                         if (uu_avl_find(tree, node, NULL, &idx) == NULL) {
6491                                 uu_avl_insert(tree, node, idx);
6492                         } else {
6493                                 zfs_close(node->un_zhp);
6494                                 free(node->un_mountp);
6495                                 free(node);
6496                         }
6497                 }
6498
6499                 /*
6500                  * Walk the AVL tree in reverse, unmounting each filesystem and
6501                  * removing it from the AVL tree in the process.
6502                  */
6503                 if ((walk = uu_avl_walk_start(tree,
6504                     UU_WALK_REVERSE | UU_WALK_ROBUST)) == NULL)
6505                         nomem();
6506
6507                 while ((node = uu_avl_walk_next(walk)) != NULL) {
6508                         uu_avl_remove(tree, node);
6509
6510                         switch (op) {
6511                         case OP_SHARE:
6512                                 if (zfs_unshareall_bypath(node->un_zhp,
6513                                     node->un_mountp) != 0)
6514                                         ret = 1;
6515                                 break;
6516
6517                         case OP_MOUNT:
6518                                 if (zfs_unmount(node->un_zhp,
6519                                     node->un_mountp, flags) != 0)
6520                                         ret = 1;
6521                                 break;
6522                         }
6523
6524                         zfs_close(node->un_zhp);
6525                         free(node->un_mountp);
6526                         free(node);
6527                 }
6528
6529                 uu_avl_walk_end(walk);
6530                 uu_avl_destroy(tree);
6531                 uu_avl_pool_destroy(pool);
6532
6533         } else {
6534                 if (argc != 1) {
6535                         if (argc == 0)
6536                                 (void) fprintf(stderr,
6537                                     gettext("missing filesystem argument\n"));
6538                         else
6539                                 (void) fprintf(stderr,
6540                                     gettext("too many arguments\n"));
6541                         usage(B_FALSE);
6542                 }
6543
6544                 /*
6545                  * We have an argument, but it may be a full path or a ZFS
6546                  * filesystem.  Pass full paths off to unmount_path() (shared by
6547                  * manual_unmount), otherwise open the filesystem and pass to
6548                  * zfs_unmount().
6549                  */
6550                 if (argv[0][0] == '/')
6551                         return (unshare_unmount_path(op, argv[0],
6552                             flags, B_FALSE));
6553
6554                 if ((zhp = zfs_open(g_zfs, argv[0],
6555                     ZFS_TYPE_FILESYSTEM)) == NULL)
6556                         return (1);
6557
6558                 verify(zfs_prop_get(zhp, op == OP_SHARE ?
6559                     ZFS_PROP_SHARENFS : ZFS_PROP_MOUNTPOINT,
6560                     nfs_mnt_prop, sizeof (nfs_mnt_prop), NULL,
6561                     NULL, 0, B_FALSE) == 0);
6562
6563                 switch (op) {
6564                 case OP_SHARE:
6565                         verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
6566                             nfs_mnt_prop,
6567                             sizeof (nfs_mnt_prop),
6568                             NULL, NULL, 0, B_FALSE) == 0);
6569                         verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
6570                             sharesmb, sizeof (sharesmb), NULL, NULL,
6571                             0, B_FALSE) == 0);
6572
6573                         if (strcmp(nfs_mnt_prop, "off") == 0 &&
6574                             strcmp(sharesmb, "off") == 0) {
6575                                 (void) fprintf(stderr, gettext("cannot "
6576                                     "unshare '%s': legacy share\n"),
6577                                     zfs_get_name(zhp));
6578 #ifdef illumos
6579                                 (void) fprintf(stderr, gettext("use "
6580                                     "unshare(1M) to unshare this "
6581                                     "filesystem\n"));
6582 #endif
6583                                 ret = 1;
6584                         } else if (!zfs_is_shared(zhp)) {
6585                                 (void) fprintf(stderr, gettext("cannot "
6586                                     "unshare '%s': not currently "
6587                                     "shared\n"), zfs_get_name(zhp));
6588                                 ret = 1;
6589                         } else if (zfs_unshareall(zhp) != 0) {
6590                                 ret = 1;
6591                         }
6592                         break;
6593
6594                 case OP_MOUNT:
6595                         if (strcmp(nfs_mnt_prop, "legacy") == 0) {
6596                                 (void) fprintf(stderr, gettext("cannot "
6597                                     "unmount '%s': legacy "
6598                                     "mountpoint\n"), zfs_get_name(zhp));
6599                                 (void) fprintf(stderr, gettext("use "
6600                                     "umount(8) to unmount this "
6601                                     "filesystem\n"));
6602                                 ret = 1;
6603                         } else if (!zfs_is_mounted(zhp, NULL)) {
6604                                 (void) fprintf(stderr, gettext("cannot "
6605                                     "unmount '%s': not currently "
6606                                     "mounted\n"),
6607                                     zfs_get_name(zhp));
6608                                 ret = 1;
6609                         } else if (zfs_unmountall(zhp, flags) != 0) {
6610                                 ret = 1;
6611                         }
6612                         break;
6613                 }
6614
6615                 zfs_close(zhp);
6616         }
6617
6618         return (ret);
6619 }
6620
6621 /*
6622  * zfs unmount -a
6623  * zfs unmount filesystem
6624  *
6625  * Unmount all filesystems, or a specific ZFS filesystem.
6626  */
6627 static int
6628 zfs_do_unmount(int argc, char **argv)
6629 {
6630         return (unshare_unmount(OP_MOUNT, argc, argv));
6631 }
6632
6633 /*
6634  * zfs unshare -a
6635  * zfs unshare filesystem
6636  *
6637  * Unshare all filesystems, or a specific ZFS filesystem.
6638  */
6639 static int
6640 zfs_do_unshare(int argc, char **argv)
6641 {
6642         return (unshare_unmount(OP_SHARE, argc, argv));
6643 }
6644
6645 /*
6646  * Attach/detach the given dataset to/from the given jail
6647  */
6648 /* ARGSUSED */
6649 static int
6650 do_jail(int argc, char **argv, int attach)
6651 {
6652         zfs_handle_t *zhp;
6653         int jailid, ret;
6654
6655         /* check number of arguments */
6656         if (argc < 3) {
6657                 (void) fprintf(stderr, gettext("missing argument(s)\n"));
6658                 usage(B_FALSE);
6659         }
6660         if (argc > 3) {
6661                 (void) fprintf(stderr, gettext("too many arguments\n"));
6662                 usage(B_FALSE);
6663         }
6664
6665         jailid = jail_getid(argv[1]);
6666         if (jailid < 0) {
6667                 (void) fprintf(stderr, gettext("invalid jail id or name\n"));
6668                 usage(B_FALSE);
6669         }
6670
6671         zhp = zfs_open(g_zfs, argv[2], ZFS_TYPE_FILESYSTEM);
6672         if (zhp == NULL)
6673                 return (1);
6674
6675         ret = (zfs_jail(zhp, jailid, attach) != 0);
6676
6677         zfs_close(zhp);
6678         return (ret);
6679 }
6680
6681 /*
6682  * zfs jail jailid filesystem
6683  *
6684  * Attach the given dataset to the given jail
6685  */
6686 /* ARGSUSED */
6687 static int
6688 zfs_do_jail(int argc, char **argv)
6689 {
6690
6691         return (do_jail(argc, argv, 1));
6692 }
6693
6694 /*
6695  * zfs unjail jailid filesystem
6696  *
6697  * Detach the given dataset from the given jail
6698  */
6699 /* ARGSUSED */
6700 static int
6701 zfs_do_unjail(int argc, char **argv)
6702 {
6703
6704         return (do_jail(argc, argv, 0));
6705 }
6706
6707 /*
6708  * Called when invoked as /etc/fs/zfs/mount.  Do the mount if the mountpoint is
6709  * 'legacy'.  Otherwise, complain that use should be using 'zfs mount'.
6710  */
6711 static int
6712 manual_mount(int argc, char **argv)
6713 {
6714         zfs_handle_t *zhp;
6715         char mountpoint[ZFS_MAXPROPLEN];
6716         char mntopts[MNT_LINE_MAX] = { '\0' };
6717         int ret = 0;
6718         int c;
6719         int flags = 0;
6720         char *dataset, *path;
6721
6722         /* check options */
6723         while ((c = getopt(argc, argv, ":mo:O")) != -1) {
6724                 switch (c) {
6725                 case 'o':
6726                         (void) strlcpy(mntopts, optarg, sizeof (mntopts));
6727                         break;
6728                 case 'O':
6729                         flags |= MS_OVERLAY;
6730                         break;
6731                 case 'm':
6732                         flags |= MS_NOMNTTAB;
6733                         break;
6734                 case ':':
6735                         (void) fprintf(stderr, gettext("missing argument for "
6736                             "'%c' option\n"), optopt);
6737                         usage(B_FALSE);
6738                         break;
6739                 case '?':
6740                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6741                             optopt);
6742                         (void) fprintf(stderr, gettext("usage: mount [-o opts] "
6743                             "<path>\n"));
6744                         return (2);
6745                 }
6746         }
6747
6748         argc -= optind;
6749         argv += optind;
6750
6751         /* check that we only have two arguments */
6752         if (argc != 2) {
6753                 if (argc == 0)
6754                         (void) fprintf(stderr, gettext("missing dataset "
6755                             "argument\n"));
6756                 else if (argc == 1)
6757                         (void) fprintf(stderr,
6758                             gettext("missing mountpoint argument\n"));
6759                 else
6760                         (void) fprintf(stderr, gettext("too many arguments\n"));
6761                 (void) fprintf(stderr, "usage: mount <dataset> <mountpoint>\n");
6762                 return (2);
6763         }
6764
6765         dataset = argv[0];
6766         path = argv[1];
6767
6768         /* try to open the dataset */
6769         if ((zhp = zfs_open(g_zfs, dataset, ZFS_TYPE_FILESYSTEM)) == NULL)
6770                 return (1);
6771
6772         (void) zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
6773             sizeof (mountpoint), NULL, NULL, 0, B_FALSE);
6774
6775         /* check for legacy mountpoint and complain appropriately */
6776         ret = 0;
6777         if (strcmp(mountpoint, ZFS_MOUNTPOINT_LEGACY) == 0) {
6778                 if (zmount(dataset, path, flags, MNTTYPE_ZFS,
6779                     NULL, 0, mntopts, sizeof (mntopts)) != 0) {
6780                         (void) fprintf(stderr, gettext("mount failed: %s\n"),
6781                             strerror(errno));
6782                         ret = 1;
6783                 }
6784         } else {
6785                 (void) fprintf(stderr, gettext("filesystem '%s' cannot be "
6786                     "mounted using 'mount -t zfs'\n"), dataset);
6787                 (void) fprintf(stderr, gettext("Use 'zfs set mountpoint=%s' "
6788                     "instead.\n"), path);
6789                 (void) fprintf(stderr, gettext("If you must use 'mount -t zfs' "
6790                     "or /etc/fstab, use 'zfs set mountpoint=legacy'.\n"));
6791                 (void) fprintf(stderr, gettext("See zfs(8) for more "
6792                     "information.\n"));
6793                 ret = 1;
6794         }
6795
6796         return (ret);
6797 }
6798
6799 /*
6800  * Called when invoked as /etc/fs/zfs/umount.  Unlike a manual mount, we allow
6801  * unmounts of non-legacy filesystems, as this is the dominant administrative
6802  * interface.
6803  */
6804 static int
6805 manual_unmount(int argc, char **argv)
6806 {
6807         int flags = 0;
6808         int c;
6809
6810         /* check options */
6811         while ((c = getopt(argc, argv, "f")) != -1) {
6812                 switch (c) {
6813                 case 'f':
6814                         flags = MS_FORCE;
6815                         break;
6816                 case '?':
6817                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6818                             optopt);
6819                         (void) fprintf(stderr, gettext("usage: unmount [-f] "
6820                             "<path>\n"));
6821                         return (2);
6822                 }
6823         }
6824
6825         argc -= optind;
6826         argv += optind;
6827
6828         /* check arguments */
6829         if (argc != 1) {
6830                 if (argc == 0)
6831                         (void) fprintf(stderr, gettext("missing path "
6832                             "argument\n"));
6833                 else
6834                         (void) fprintf(stderr, gettext("too many arguments\n"));
6835                 (void) fprintf(stderr, gettext("usage: unmount [-f] <path>\n"));
6836                 return (2);
6837         }
6838
6839         return (unshare_unmount_path(OP_MOUNT, argv[0], flags, B_TRUE));
6840 }
6841
6842 static int
6843 find_command_idx(char *command, int *idx)
6844 {
6845         int i;
6846
6847         for (i = 0; i < NCOMMAND; i++) {
6848                 if (command_table[i].name == NULL)
6849                         continue;
6850
6851                 if (strcmp(command, command_table[i].name) == 0) {
6852                         *idx = i;
6853                         return (0);
6854                 }
6855         }
6856         return (1);
6857 }
6858
6859 static int
6860 zfs_do_diff(int argc, char **argv)
6861 {
6862         zfs_handle_t *zhp;
6863         int flags = 0;
6864         char *tosnap = NULL;
6865         char *fromsnap = NULL;
6866         char *atp, *copy;
6867         int err = 0;
6868         int c;
6869
6870         while ((c = getopt(argc, argv, "FHt")) != -1) {
6871                 switch (c) {
6872                 case 'F':
6873                         flags |= ZFS_DIFF_CLASSIFY;
6874                         break;
6875                 case 'H':
6876                         flags |= ZFS_DIFF_PARSEABLE;
6877                         break;
6878                 case 't':
6879                         flags |= ZFS_DIFF_TIMESTAMP;
6880                         break;
6881                 default:
6882                         (void) fprintf(stderr,
6883                             gettext("invalid option '%c'\n"), optopt);
6884                         usage(B_FALSE);
6885                 }
6886         }
6887
6888         argc -= optind;
6889         argv += optind;
6890
6891         if (argc < 1) {
6892                 (void) fprintf(stderr,
6893                 gettext("must provide at least one snapshot name\n"));
6894                 usage(B_FALSE);
6895         }
6896
6897         if (argc > 2) {
6898                 (void) fprintf(stderr, gettext("too many arguments\n"));
6899                 usage(B_FALSE);
6900         }
6901
6902         fromsnap = argv[0];
6903         tosnap = (argc == 2) ? argv[1] : NULL;
6904
6905         copy = NULL;
6906         if (*fromsnap != '@')
6907                 copy = strdup(fromsnap);
6908         else if (tosnap)
6909                 copy = strdup(tosnap);
6910         if (copy == NULL)
6911                 usage(B_FALSE);
6912
6913         if (atp = strchr(copy, '@'))
6914                 *atp = '\0';
6915
6916         if ((zhp = zfs_open(g_zfs, copy, ZFS_TYPE_FILESYSTEM)) == NULL)
6917                 return (1);
6918
6919         free(copy);
6920
6921         /*
6922          * Ignore SIGPIPE so that the library can give us
6923          * information on any failure
6924          */
6925         (void) sigignore(SIGPIPE);
6926
6927         err = zfs_show_diffs(zhp, STDOUT_FILENO, fromsnap, tosnap, flags);
6928
6929         zfs_close(zhp);
6930
6931         return (err != 0);
6932 }
6933
6934 /*
6935  * zfs bookmark <fs@snap> <fs#bmark>
6936  *
6937  * Creates a bookmark with the given name from the given snapshot.
6938  */
6939 static int
6940 zfs_do_bookmark(int argc, char **argv)
6941 {
6942         char snapname[ZFS_MAXNAMELEN];
6943         zfs_handle_t *zhp;
6944         nvlist_t *nvl;
6945         int ret = 0;
6946         int c;
6947
6948         /* check options */
6949         while ((c = getopt(argc, argv, "")) != -1) {
6950                 switch (c) {
6951                 case '?':
6952                         (void) fprintf(stderr,
6953                             gettext("invalid option '%c'\n"), optopt);
6954                         goto usage;
6955                 }
6956         }
6957
6958         argc -= optind;
6959         argv += optind;
6960
6961         /* check number of arguments */
6962         if (argc < 1) {
6963                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
6964                 goto usage;
6965         }
6966         if (argc < 2) {
6967                 (void) fprintf(stderr, gettext("missing bookmark argument\n"));
6968                 goto usage;
6969         }
6970
6971         if (strchr(argv[1], '#') == NULL) {
6972                 (void) fprintf(stderr,
6973                     gettext("invalid bookmark name '%s' -- "
6974                     "must contain a '#'\n"), argv[1]);
6975                 goto usage;
6976         }
6977
6978         if (argv[0][0] == '@') {
6979                 /*
6980                  * Snapshot name begins with @.
6981                  * Default to same fs as bookmark.
6982                  */
6983                 (void) strncpy(snapname, argv[1], sizeof (snapname));
6984                 *strchr(snapname, '#') = '\0';
6985                 (void) strlcat(snapname, argv[0], sizeof (snapname));
6986         } else {
6987                 (void) strncpy(snapname, argv[0], sizeof (snapname));
6988         }
6989         zhp = zfs_open(g_zfs, snapname, ZFS_TYPE_SNAPSHOT);
6990         if (zhp == NULL)
6991                 goto usage;
6992         zfs_close(zhp);
6993
6994
6995         nvl = fnvlist_alloc();
6996         fnvlist_add_string(nvl, argv[1], snapname);
6997         ret = lzc_bookmark(nvl, NULL);
6998         fnvlist_free(nvl);
6999
7000         if (ret != 0) {
7001                 const char *err_msg;
7002                 char errbuf[1024];
7003
7004                 (void) snprintf(errbuf, sizeof (errbuf),
7005                     dgettext(TEXT_DOMAIN,
7006                     "cannot create bookmark '%s'"), argv[1]);
7007
7008                 switch (ret) {
7009                 case EXDEV:
7010                         err_msg = "bookmark is in a different pool";
7011                         break;
7012                 case EEXIST:
7013                         err_msg = "bookmark exists";
7014                         break;
7015                 case EINVAL:
7016                         err_msg = "invalid argument";
7017                         break;
7018                 case ENOTSUP:
7019                         err_msg = "bookmark feature not enabled";
7020                         break;
7021                 case ENOSPC:
7022                         err_msg = "out of space";
7023                         break;
7024                 default:
7025                         err_msg = "unknown error";
7026                         break;
7027                 }
7028                 (void) fprintf(stderr, "%s: %s\n", errbuf,
7029                     dgettext(TEXT_DOMAIN, err_msg));
7030         }
7031
7032         return (ret != 0);
7033
7034 usage:
7035         usage(B_FALSE);
7036         return (-1);
7037 }
7038
7039 int
7040 main(int argc, char **argv)
7041 {
7042         int ret = 0;
7043         int i;
7044         char *progname;
7045         char *cmdname;
7046
7047         (void) setlocale(LC_ALL, "");
7048         (void) textdomain(TEXT_DOMAIN);
7049
7050         opterr = 0;
7051
7052         if ((g_zfs = libzfs_init()) == NULL) {
7053                 (void) fprintf(stderr, gettext("internal error: failed to "
7054                     "initialize ZFS library\n"));
7055                 return (1);
7056         }
7057
7058         zfs_save_arguments(argc, argv, history_str, sizeof (history_str));
7059
7060         libzfs_print_on_error(g_zfs, B_TRUE);
7061
7062         if ((mnttab_file = fopen(MNTTAB, "r")) == NULL) {
7063                 (void) fprintf(stderr, gettext("internal error: unable to "
7064                     "open %s\n"), MNTTAB);
7065                 return (1);
7066         }
7067
7068         /*
7069          * This command also doubles as the /etc/fs mount and unmount program.
7070          * Determine if we should take this behavior based on argv[0].
7071          */
7072         progname = basename(argv[0]);
7073         if (strcmp(progname, "mount") == 0) {
7074                 ret = manual_mount(argc, argv);
7075         } else if (strcmp(progname, "umount") == 0) {
7076                 ret = manual_unmount(argc, argv);
7077         } else {
7078                 /*
7079                  * Make sure the user has specified some command.
7080                  */
7081                 if (argc < 2) {
7082                         (void) fprintf(stderr, gettext("missing command\n"));
7083                         usage(B_FALSE);
7084                 }
7085
7086                 cmdname = argv[1];
7087
7088                 /*
7089                  * The 'umount' command is an alias for 'unmount'
7090                  */
7091                 if (strcmp(cmdname, "umount") == 0)
7092                         cmdname = "unmount";
7093
7094                 /*
7095                  * The 'recv' command is an alias for 'receive'
7096                  */
7097                 if (strcmp(cmdname, "recv") == 0)
7098                         cmdname = "receive";
7099
7100                 /*
7101                  * The 'snap' command is an alias for 'snapshot'
7102                  */
7103                 if (strcmp(cmdname, "snap") == 0)
7104                         cmdname = "snapshot";
7105
7106                 /*
7107                  * Special case '-?'
7108                  */
7109                 if (strcmp(cmdname, "-?") == 0)
7110                         usage(B_TRUE);
7111
7112                 /*
7113                  * Run the appropriate command.
7114                  */
7115                 libzfs_mnttab_cache(g_zfs, B_TRUE);
7116                 if (find_command_idx(cmdname, &i) == 0) {
7117                         current_command = &command_table[i];
7118                         ret = command_table[i].func(argc - 1, argv + 1);
7119                 } else if (strchr(cmdname, '=') != NULL) {
7120                         verify(find_command_idx("set", &i) == 0);
7121                         current_command = &command_table[i];
7122                         ret = command_table[i].func(argc, argv);
7123                 } else {
7124                         (void) fprintf(stderr, gettext("unrecognized "
7125                             "command '%s'\n"), cmdname);
7126                         usage(B_FALSE);
7127                 }
7128                 libzfs_mnttab_cache(g_zfs, B_FALSE);
7129         }
7130
7131         (void) fclose(mnttab_file);
7132
7133         if (ret == 0 && log_history)
7134                 (void) zpool_log_history(g_zfs, history_str);
7135
7136         libzfs_fini(g_zfs);
7137
7138         /*
7139          * The 'ZFS_ABORT' environment variable causes us to dump core on exit
7140          * for the purposes of running ::findleaks.
7141          */
7142         if (getenv("ZFS_ABORT") != NULL) {
7143                 (void) printf("dumping core by request\n");
7144                 abort();
7145         }
7146
7147         return (ret);
7148 }