granicus.if.org Git - zfs/blob - 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) 2013 Steven Hartland.  All rights reserved.
  28  * Copyright 2016 Igor Kozhukhov <ikozhukhov@gmail.com>.
  29  * Copyright 2016 Nexenta Systems, Inc.
  30  */
  31
  32 #include <assert.h>
  33 #include <ctype.h>
  34 #include <errno.h>
  35 #include <getopt.h>
  36 #include <libgen.h>
  37 #include <libintl.h>
  38 #include <libuutil.h>
  39 #include <libnvpair.h>
  40 #include <locale.h>
  41 #include <stddef.h>
  42 #include <stdio.h>
  43 #include <stdlib.h>
  44 #include <strings.h>
  45 #include <unistd.h>
  46 #include <fcntl.h>
  47 #include <zone.h>
  48 #include <grp.h>
  49 #include <pwd.h>
  50 #include <signal.h>
  51 #include <sys/list.h>
  52 #include <sys/mkdev.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
  61 #include <libzfs.h>
  62 #include <libzfs_core.h>
  63 #include <zfs_prop.h>
  64 #include <zfs_deleg.h>
  65 #include <libuutil.h>
  66 #ifdef HAVE_IDMAP
  67 #include <aclutils.h>
  68 #include <directory.h>
  69 #endif /* HAVE_IDMAP */
  70
  71 #include "zfs_iter.h"
  72 #include "zfs_util.h"
  73 #include "zfs_comutil.h"
  74 #include "libzfs_impl.h"
  75
  76 libzfs_handle_t *g_zfs;
  77
  78 static FILE *mnttab_file;
  79 static char history_str[HIS_MAX_RECORD_LEN];
  80 static boolean_t log_history = B_TRUE;
  81
  82 static int zfs_do_clone(int argc, char **argv);
  83 static int zfs_do_create(int argc, char **argv);
  84 static int zfs_do_destroy(int argc, char **argv);
  85 static int zfs_do_get(int argc, char **argv);
  86 static int zfs_do_inherit(int argc, char **argv);
  87 static int zfs_do_list(int argc, char **argv);
  88 static int zfs_do_mount(int argc, char **argv);
  89 static int zfs_do_rename(int argc, char **argv);
  90 static int zfs_do_rollback(int argc, char **argv);
  91 static int zfs_do_set(int argc, char **argv);
  92 static int zfs_do_upgrade(int argc, char **argv);
  93 static int zfs_do_snapshot(int argc, char **argv);
  94 static int zfs_do_unmount(int argc, char **argv);
  95 static int zfs_do_share(int argc, char **argv);
  96 static int zfs_do_unshare(int argc, char **argv);
  97 static int zfs_do_send(int argc, char **argv);
  98 static int zfs_do_receive(int argc, char **argv);
  99 static int zfs_do_promote(int argc, char **argv);
 100 static int zfs_do_userspace(int argc, char **argv);
 101 static int zfs_do_allow(int argc, char **argv);
 102 static int zfs_do_unallow(int argc, char **argv);
 103 static int zfs_do_hold(int argc, char **argv);
 104 static int zfs_do_holds(int argc, char **argv);
 105 static int zfs_do_release(int argc, char **argv);
 106 static int zfs_do_diff(int argc, char **argv);
 107 static int zfs_do_bookmark(int argc, char **argv);
 108
 109 /*
 110  * Enable a reasonable set of defaults for libumem debugging on DEBUG builds.
 111  */
 112
 113 #ifdef DEBUG
 114 const char *
 115 _umem_debug_init(void)
 116 {
 117         return ("default,verbose"); /* $UMEM_DEBUG setting */
 118 }
 119
 120 const char *
 121 _umem_logging_init(void)
 122 {
 123         return ("fail,contents"); /* $UMEM_LOGGING setting */
 124 }
 125 #endif
 126
 127 typedef enum {
 128         HELP_CLONE,
 129         HELP_CREATE,
 130         HELP_DESTROY,
 131         HELP_GET,
 132         HELP_INHERIT,
 133         HELP_UPGRADE,
 134         HELP_LIST,
 135         HELP_MOUNT,
 136         HELP_PROMOTE,
 137         HELP_RECEIVE,
 138         HELP_RENAME,
 139         HELP_ROLLBACK,
 140         HELP_SEND,
 141         HELP_SET,
 142         HELP_SHARE,
 143         HELP_SNAPSHOT,
 144         HELP_UNMOUNT,
 145         HELP_UNSHARE,
 146         HELP_ALLOW,
 147         HELP_UNALLOW,
 148         HELP_USERSPACE,
 149         HELP_GROUPSPACE,
 150         HELP_HOLD,
 151         HELP_HOLDS,
 152         HELP_RELEASE,
 153         HELP_DIFF,
 154         HELP_BOOKMARK,
 155 } zfs_help_t;
 156
 157 typedef struct zfs_command {
 158         const char      *name;
 159         int             (*func)(int argc, char **argv);
 160         zfs_help_t      usage;
 161 } zfs_command_t;
 162
 163 /*
 164  * Master command table.  Each ZFS command has a name, associated function, and
 165  * usage message.  The usage messages need to be internationalized, so we have
 166  * to have a function to return the usage message based on a command index.
 167  *
 168  * These commands are organized according to how they are displayed in the usage
 169  * message.  An empty command (one with a NULL name) indicates an empty line in
 170  * the generic usage message.
 171  */
 172 static zfs_command_t command_table[] = {
 173         { "create",     zfs_do_create,          HELP_CREATE             },
 174         { "destroy",    zfs_do_destroy,         HELP_DESTROY            },
 175         { NULL },
 176         { "snapshot",   zfs_do_snapshot,        HELP_SNAPSHOT           },
 177         { "rollback",   zfs_do_rollback,        HELP_ROLLBACK           },
 178         { "clone",      zfs_do_clone,           HELP_CLONE              },
 179         { "promote",    zfs_do_promote,         HELP_PROMOTE            },
 180         { "rename",     zfs_do_rename,          HELP_RENAME             },
 181         { "bookmark",   zfs_do_bookmark,        HELP_BOOKMARK           },
 182         { NULL },
 183         { "list",       zfs_do_list,            HELP_LIST               },
 184         { NULL },
 185         { "set",        zfs_do_set,             HELP_SET                },
 186         { "get",        zfs_do_get,             HELP_GET                },
 187         { "inherit",    zfs_do_inherit,         HELP_INHERIT            },
 188         { "upgrade",    zfs_do_upgrade,         HELP_UPGRADE            },
 189         { "userspace",  zfs_do_userspace,       HELP_USERSPACE          },
 190         { "groupspace", zfs_do_userspace,       HELP_GROUPSPACE         },
 191         { NULL },
 192         { "mount",      zfs_do_mount,           HELP_MOUNT              },
 193         { "unmount",    zfs_do_unmount,         HELP_UNMOUNT            },
 194         { "share",      zfs_do_share,           HELP_SHARE              },
 195         { "unshare",    zfs_do_unshare,         HELP_UNSHARE            },
 196         { NULL },
 197         { "send",       zfs_do_send,            HELP_SEND               },
 198         { "receive",    zfs_do_receive,         HELP_RECEIVE            },
 199         { NULL },
 200         { "allow",      zfs_do_allow,           HELP_ALLOW              },
 201         { NULL },
 202         { "unallow",    zfs_do_unallow,         HELP_UNALLOW            },
 203         { NULL },
 204         { "hold",       zfs_do_hold,            HELP_HOLD               },
 205         { "holds",      zfs_do_holds,           HELP_HOLDS              },
 206         { "release",    zfs_do_release,         HELP_RELEASE            },
 207         { "diff",       zfs_do_diff,            HELP_DIFF               },
 208 };
 209
 210 #define NCOMMAND        (sizeof (command_table) / sizeof (command_table[0]))
 211
 212 zfs_command_t *current_command;
 213
 214 static const char *
 215 get_usage(zfs_help_t idx)
 216 {
 217         switch (idx) {
 218         case HELP_CLONE:
 219                 return (gettext("\tclone [-p] [-o property=value] ... "
 220                     "<snapshot> <filesystem|volume>\n"));
 221         case HELP_CREATE:
 222                 return (gettext("\tcreate [-p] [-o property=value] ... "
 223                     "<filesystem>\n"
 224                     "\tcreate [-ps] [-b blocksize] [-o property=value] ... "
 225                     "-V <size> <volume>\n"));
 226         case HELP_DESTROY:
 227                 return (gettext("\tdestroy [-fnpRrv] <filesystem|volume>\n"
 228                     "\tdestroy [-dnpRrv] "
 229                     "<filesystem|volume>@<snap>[%<snap>][,...]\n"
 230                     "\tdestroy <filesystem|volume>#<bookmark>\n"));
 231         case HELP_GET:
 232                 return (gettext("\tget [-rHp] [-d max] "
 233                     "[-o \"all\" | field[,...]]\n"
 234                     "\t    [-t type[,...]] [-s source[,...]]\n"
 235                     "\t    <\"all\" | property[,...]> "
 236                     "[filesystem|volume|snapshot|bookmark] ...\n"));
 237         case HELP_INHERIT:
 238                 return (gettext("\tinherit [-rS] <property> "
 239                     "<filesystem|volume|snapshot> ...\n"));
 240         case HELP_UPGRADE:
 241                 return (gettext("\tupgrade [-v]\n"
 242                     "\tupgrade [-r] [-V version] <-a | filesystem ...>\n"));
 243         case HELP_LIST:
 244                 return (gettext("\tlist [-Hp] [-r|-d max] [-o property[,...]] "
 245                     "[-s property]...\n\t    [-S property]... [-t type[,...]] "
 246                     "[filesystem|volume|snapshot] ...\n"));
 247         case HELP_MOUNT:
 248                 return (gettext("\tmount\n"
 249                     "\tmount [-vO] [-o opts] <-a | filesystem>\n"));
 250         case HELP_PROMOTE:
 251                 return (gettext("\tpromote <clone-filesystem>\n"));
 252         case HELP_RECEIVE:
 253                 return (gettext("\treceive [-vnsFu] "
 254                     "[-o <property>=<value>] ... [-x <property>] ...\n"
 255                     "\t    <filesystem|volume|snapshot>\n"
 256                     "\treceive [-vnsFu] [-o <property>=<value>] ... "
 257                     "[-x <property>] ... \n"
 258                     "\t    [-d | -e] <filesystem>\n"
 259                     "\treceive -A <filesystem|volume>\n"));
 260         case HELP_RENAME:
 261                 return (gettext("\trename [-f] <filesystem|volume|snapshot> "
 262                     "<filesystem|volume|snapshot>\n"
 263                     "\trename [-f] -p <filesystem|volume> <filesystem|volume>\n"
 264                     "\trename -r <snapshot> <snapshot>\n"));
 265         case HELP_ROLLBACK:
 266                 return (gettext("\trollback [-rRf] <snapshot>\n"));
 267         case HELP_SEND:
 268                 return (gettext("\tsend [-DnPpRvLec] [-[i|I] snapshot] "
 269                     "<snapshot>\n"
 270                     "\tsend [-Lec] [-i snapshot|bookmark] "
 271                     "<filesystem|volume|snapshot>\n"
 272                     "\tsend [-nvPe] -t <receive_resume_token>\n"));
 273         case HELP_SET:
 274                 return (gettext("\tset <property=value> ... "
 275                     "<filesystem|volume|snapshot> ...\n"));
 276         case HELP_SHARE:
 277                 return (gettext("\tshare <-a [nfs|smb] | filesystem>\n"));
 278         case HELP_SNAPSHOT:
 279                 return (gettext("\tsnapshot|snap [-r] [-o property=value] ... "
 280                     "<filesystem|volume>@<snap> ...\n"));
 281         case HELP_UNMOUNT:
 282                 return (gettext("\tunmount [-f] "
 283                     "<-a | filesystem|mountpoint>\n"));
 284         case HELP_UNSHARE:
 285                 return (gettext("\tunshare "
 286                     "<-a [nfs|smb] | filesystem|mountpoint>\n"));
 287         case HELP_ALLOW:
 288                 return (gettext("\tallow <filesystem|volume>\n"
 289                     "\tallow [-ldug] "
 290                     "<\"everyone\"|user|group>[,...] <perm|@setname>[,...]\n"
 291                     "\t    <filesystem|volume>\n"
 292                     "\tallow [-ld] -e <perm|@setname>[,...] "
 293                     "<filesystem|volume>\n"
 294                     "\tallow -c <perm|@setname>[,...] <filesystem|volume>\n"
 295                     "\tallow -s @setname <perm|@setname>[,...] "
 296                     "<filesystem|volume>\n"));
 297         case HELP_UNALLOW:
 298                 return (gettext("\tunallow [-rldug] "
 299                     "<\"everyone\"|user|group>[,...]\n"
 300                     "\t    [<perm|@setname>[,...]] <filesystem|volume>\n"
 301                     "\tunallow [-rld] -e [<perm|@setname>[,...]] "
 302                     "<filesystem|volume>\n"
 303                     "\tunallow [-r] -c [<perm|@setname>[,...]] "
 304                     "<filesystem|volume>\n"
 305                     "\tunallow [-r] -s @setname [<perm|@setname>[,...]] "
 306                     "<filesystem|volume>\n"));
 307         case HELP_USERSPACE:
 308                 return (gettext("\tuserspace [-Hinp] [-o field[,...]] "
 309                     "[-s field] ...\n"
 310                     "\t    [-S field] ... [-t type[,...]] "
 311                     "<filesystem|snapshot>\n"));
 312         case HELP_GROUPSPACE:
 313                 return (gettext("\tgroupspace [-Hinp] [-o field[,...]] "
 314                     "[-s field] ...\n"
 315                     "\t    [-S field] ... [-t type[,...]] "
 316                     "<filesystem|snapshot>\n"));
 317         case HELP_HOLD:
 318                 return (gettext("\thold [-r] <tag> <snapshot> ...\n"));
 319         case HELP_HOLDS:
 320                 return (gettext("\tholds [-r] <snapshot> ...\n"));
 321         case HELP_RELEASE:
 322                 return (gettext("\trelease [-r] <tag> <snapshot> ...\n"));
 323         case HELP_DIFF:
 324                 return (gettext("\tdiff [-FHt] <snapshot> "
 325                     "[snapshot|filesystem]\n"));
 326         case HELP_BOOKMARK:
 327                 return (gettext("\tbookmark <snapshot> <bookmark>\n"));
 328         }
 329
 330         abort();
 331         /* NOTREACHED */
 332 }
 333
 334 void
 335 nomem(void)
 336 {
 337         (void) fprintf(stderr, gettext("internal error: out of memory\n"));
 338         exit(1);
 339 }
 340
 341 /*
 342  * Utility function to guarantee malloc() success.
 343  */
 344
 345 void *
 346 safe_malloc(size_t size)
 347 {
 348         void *data;
 349
 350         if ((data = calloc(1, size)) == NULL)
 351                 nomem();
 352
 353         return (data);
 354 }
 355
 356 static char *
 357 safe_strdup(char *str)
 358 {
 359         char *dupstr = strdup(str);
 360
 361         if (dupstr == NULL)
 362                 nomem();
 363
 364         return (dupstr);
 365 }
 366
 367 /*
 368  * Callback routine that will print out information for each of
 369  * the properties.
 370  */
 371 static int
 372 usage_prop_cb(int prop, void *cb)
 373 {
 374         FILE *fp = cb;
 375
 376         (void) fprintf(fp, "\t%-15s ", zfs_prop_to_name(prop));
 377
 378         if (zfs_prop_readonly(prop))
 379                 (void) fprintf(fp, " NO    ");
 380         else
 381                 (void) fprintf(fp, "YES    ");
 382
 383         if (zfs_prop_inheritable(prop))
 384                 (void) fprintf(fp, "  YES   ");
 385         else
 386                 (void) fprintf(fp, "   NO   ");
 387
 388         if (zfs_prop_values(prop) == NULL)
 389                 (void) fprintf(fp, "-\n");
 390         else
 391                 (void) fprintf(fp, "%s\n", zfs_prop_values(prop));
 392
 393         return (ZPROP_CONT);
 394 }
 395
 396 /*
 397  * Display usage message.  If we're inside a command, display only the usage for
 398  * that command.  Otherwise, iterate over the entire command table and display
 399  * a complete usage message.
 400  */
 401 static void
 402 usage(boolean_t requested)
 403 {
 404         int i;
 405         boolean_t show_properties = B_FALSE;
 406         FILE *fp = requested ? stdout : stderr;
 407
 408         if (current_command == NULL) {
 409
 410                 (void) fprintf(fp, gettext("usage: zfs command args ...\n"));
 411                 (void) fprintf(fp,
 412                     gettext("where 'command' is one of the following:\n\n"));
 413
 414                 for (i = 0; i < NCOMMAND; i++) {
 415                         if (command_table[i].name == NULL)
 416                                 (void) fprintf(fp, "\n");
 417                         else
 418                                 (void) fprintf(fp, "%s",
 419                                     get_usage(command_table[i].usage));
 420                 }
 421
 422                 (void) fprintf(fp, gettext("\nEach dataset is of the form: "
 423                     "pool/[dataset/]*dataset[@name]\n"));
 424         } else {
 425                 (void) fprintf(fp, gettext("usage:\n"));
 426                 (void) fprintf(fp, "%s", get_usage(current_command->usage));
 427         }
 428
 429         if (current_command != NULL &&
 430             (strcmp(current_command->name, "set") == 0 ||
 431             strcmp(current_command->name, "get") == 0 ||
 432             strcmp(current_command->name, "inherit") == 0 ||
 433             strcmp(current_command->name, "list") == 0))
 434                 show_properties = B_TRUE;
 435
 436         if (show_properties) {
 437                 (void) fprintf(fp,
 438                     gettext("\nThe following properties are supported:\n"));
 439
 440                 (void) fprintf(fp, "\n\t%-14s %s  %s   %s\n\n",
 441                     "PROPERTY", "EDIT", "INHERIT", "VALUES");
 442
 443                 /* Iterate over all properties */
 444                 (void) zprop_iter(usage_prop_cb, fp, B_FALSE, B_TRUE,
 445                     ZFS_TYPE_DATASET);
 446
 447                 (void) fprintf(fp, "\t%-15s ", "userused@...");
 448                 (void) fprintf(fp, " NO       NO   <size>\n");
 449                 (void) fprintf(fp, "\t%-15s ", "groupused@...");
 450                 (void) fprintf(fp, " NO       NO   <size>\n");
 451                 (void) fprintf(fp, "\t%-15s ", "userquota@...");
 452                 (void) fprintf(fp, "YES       NO   <size> | none\n");
 453                 (void) fprintf(fp, "\t%-15s ", "groupquota@...");
 454                 (void) fprintf(fp, "YES       NO   <size> | none\n");
 455                 (void) fprintf(fp, "\t%-15s ", "written@<snap>");
 456                 (void) fprintf(fp, " NO       NO   <size>\n");
 457
 458                 (void) fprintf(fp, gettext("\nSizes are specified in bytes "
 459                     "with standard units such as K, M, G, etc.\n"));
 460                 (void) fprintf(fp, gettext("\nUser-defined properties can "
 461                     "be specified by using a name containing a colon (:).\n"));
 462                 (void) fprintf(fp, gettext("\nThe {user|group}{used|quota}@ "
 463                     "properties must be appended with\n"
 464                     "a user or group specifier of one of these forms:\n"
 465                     "    POSIX name      (eg: \"matt\")\n"
 466                     "    POSIX id        (eg: \"126829\")\n"
 467                     "    SMB name@domain (eg: \"matt@sun\")\n"
 468                     "    SMB SID         (eg: \"S-1-234-567-89\")\n"));
 469         } else {
 470                 (void) fprintf(fp,
 471                     gettext("\nFor the property list, run: %s\n"),
 472                     "zfs set|get");
 473                 (void) fprintf(fp,
 474                     gettext("\nFor the delegated permission list, run: %s\n"),
 475                     "zfs allow|unallow");
 476         }
 477
 478         /*
 479          * See comments at end of main().
 480          */
 481         if (getenv("ZFS_ABORT") != NULL) {
 482                 (void) printf("dumping core by request\n");
 483                 abort();
 484         }
 485
 486         exit(requested ? 0 : 2);
 487 }
 488
 489 /*
 490  * Take a property=value argument string and add it to the given nvlist.
 491  * Modifies the argument inplace.
 492  */
 493 static boolean_t
 494 parseprop(nvlist_t *props, char *propname)
 495 {
 496         char *propval;
 497
 498         if ((propval = strchr(propname, '=')) == NULL) {
 499                 (void) fprintf(stderr, gettext("missing "
 500                     "'=' for property=value argument\n"));
 501                 return (B_FALSE);
 502         }
 503         *propval = '\0';
 504         propval++;
 505         if (nvlist_exists(props, propname)) {
 506                 (void) fprintf(stderr, gettext("property '%s' "
 507                     "specified multiple times\n"), propname);
 508                 return (B_FALSE);
 509         }
 510         if (nvlist_add_string(props, propname, propval) != 0)
 511                 nomem();
 512         return (B_TRUE);
 513 }
 514
 515 /*
 516  * Take a property name argument and add it to the given nvlist.
 517  * Modifies the argument inplace.
 518  */
 519 static boolean_t
 520 parsepropname(nvlist_t *props, char *propname)
 521 {
 522         if (strchr(propname, '=') != NULL) {
 523                 (void) fprintf(stderr, gettext("invalid character "
 524                     "'=' in property argument\n"));
 525                 return (B_FALSE);
 526         }
 527         if (nvlist_exists(props, propname)) {
 528                 (void) fprintf(stderr, gettext("property '%s' "
 529                     "specified multiple times\n"), propname);
 530                 return (B_FALSE);
 531         }
 532         if (nvlist_add_boolean(props, propname) != 0)
 533                 nomem();
 534         return (B_TRUE);
 535 }
 536
 537 static int
 538 parse_depth(char *opt, int *flags)
 539 {
 540         char *tmp;
 541         int depth;
 542
 543         depth = (int)strtol(opt, &tmp, 0);
 544         if (*tmp) {
 545                 (void) fprintf(stderr,
 546                     gettext("%s is not an integer\n"), optarg);
 547                 usage(B_FALSE);
 548         }
 549         if (depth < 0) {
 550                 (void) fprintf(stderr,
 551                     gettext("Depth can not be negative.\n"));
 552                 usage(B_FALSE);
 553         }
 554         *flags |= (ZFS_ITER_DEPTH_LIMIT|ZFS_ITER_RECURSE);
 555         return (depth);
 556 }
 557
 558 #define PROGRESS_DELAY 2                /* seconds */
 559
 560 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";
 561 static time_t pt_begin;
 562 static char *pt_header = NULL;
 563 static boolean_t pt_shown;
 564
 565 static void
 566 start_progress_timer(void)
 567 {
 568         pt_begin = time(NULL) + PROGRESS_DELAY;
 569         pt_shown = B_FALSE;
 570 }
 571
 572 static void
 573 set_progress_header(char *header)
 574 {
 575         assert(pt_header == NULL);
 576         pt_header = safe_strdup(header);
 577         if (pt_shown) {
 578                 (void) printf("%s: ", header);
 579                 (void) fflush(stdout);
 580         }
 581 }
 582
 583 static void
 584 update_progress(char *update)
 585 {
 586         if (!pt_shown && time(NULL) > pt_begin) {
 587                 int len = strlen(update);
 588
 589                 (void) printf("%s: %s%*.*s", pt_header, update, len, len,
 590                     pt_reverse);
 591                 (void) fflush(stdout);
 592                 pt_shown = B_TRUE;
 593         } else if (pt_shown) {
 594                 int len = strlen(update);
 595
 596                 (void) printf("%s%*.*s", update, len, len, pt_reverse);
 597                 (void) fflush(stdout);
 598         }
 599 }
 600
 601 static void
 602 finish_progress(char *done)
 603 {
 604         if (pt_shown) {
 605                 (void) printf("%s\n", done);
 606                 (void) fflush(stdout);
 607         }
 608         free(pt_header);
 609         pt_header = NULL;
 610 }
 611
 612 static int
 613 zfs_mount_and_share(libzfs_handle_t *hdl, const char *dataset, zfs_type_t type)
 614 {
 615         zfs_handle_t *zhp = NULL;
 616         int ret = 0;
 617
 618         zhp = zfs_open(hdl, dataset, type);
 619         if (zhp == NULL)
 620                 return (1);
 621
 622         /*
 623          * Volumes may neither be mounted or shared.  Potentially in the
 624          * future filesystems detected on these volumes could be mounted.
 625          */
 626         if (zfs_get_type(zhp) == ZFS_TYPE_VOLUME) {
 627                 zfs_close(zhp);
 628                 return (0);
 629         }
 630
 631         /*
 632          * Mount and/or share the new filesystem as appropriate.  We provide a
 633          * verbose error message to let the user know that their filesystem was
 634          * in fact created, even if we failed to mount or share it.
 635          *
 636          * If the user doesn't want the dataset automatically mounted, then
 637          * skip the mount/share step
 638          */
 639         if (zfs_prop_valid_for_type(ZFS_PROP_CANMOUNT, type, B_FALSE) &&
 640             zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) == ZFS_CANMOUNT_ON) {
 641                 if (geteuid() != 0) {
 642                         (void) fprintf(stderr, gettext("filesystem "
 643                             "successfully created, but it may only be "
 644                             "mounted by root\n"));
 645                         ret = 1;
 646                 } else if (zfs_mount(zhp, NULL, 0) != 0) {
 647                         (void) fprintf(stderr, gettext("filesystem "
 648                             "successfully created, but not mounted\n"));
 649                         ret = 1;
 650                 } else if (zfs_share(zhp) != 0) {
 651                         (void) fprintf(stderr, gettext("filesystem "
 652                             "successfully created, but not shared\n"));
 653                         ret = 1;
 654                 }
 655         }
 656
 657         zfs_close(zhp);
 658
 659         return (ret);
 660 }
 661
 662 /*
 663  * zfs clone [-p] [-o prop=value] ... <snap> <fs | vol>
 664  *
 665  * Given an existing dataset, create a writable copy whose initial contents
 666  * are the same as the source.  The newly created dataset maintains a
 667  * dependency on the original; the original cannot be destroyed so long as
 668  * the clone exists.
 669  *
 670  * The '-p' flag creates all the non-existing ancestors of the target first.
 671  */
 672 static int
 673 zfs_do_clone(int argc, char **argv)
 674 {
 675         zfs_handle_t *zhp = NULL;
 676         boolean_t parents = B_FALSE;
 677         nvlist_t *props;
 678         int ret = 0;
 679         int c;
 680
 681         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
 682                 nomem();
 683
 684         /* check options */
 685         while ((c = getopt(argc, argv, "o:p")) != -1) {
 686                 switch (c) {
 687                 case 'o':
 688                         if (!parseprop(props, optarg)) {
 689                                 nvlist_free(props);
 690                                 return (1);
 691                         }
 692                         break;
 693                 case 'p':
 694                         parents = B_TRUE;
 695                         break;
 696                 case '?':
 697                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
 698                             optopt);
 699                         goto usage;
 700                 }
 701         }
 702
 703         argc -= optind;
 704         argv += optind;
 705
 706         /* check number of arguments */
 707         if (argc < 1) {
 708                 (void) fprintf(stderr, gettext("missing source dataset "
 709                     "argument\n"));
 710                 goto usage;
 711         }
 712         if (argc < 2) {
 713                 (void) fprintf(stderr, gettext("missing target dataset "
 714                     "argument\n"));
 715                 goto usage;
 716         }
 717         if (argc > 2) {
 718                 (void) fprintf(stderr, gettext("too many arguments\n"));
 719                 goto usage;
 720         }
 721
 722         /* open the source dataset */
 723         if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL) {
 724                 nvlist_free(props);
 725                 return (1);
 726         }
 727
 728         if (parents && zfs_name_valid(argv[1], ZFS_TYPE_FILESYSTEM |
 729             ZFS_TYPE_VOLUME)) {
 730                 /*
 731                  * Now create the ancestors of the target dataset.  If the
 732                  * target already exists and '-p' option was used we should not
 733                  * complain.
 734                  */
 735                 if (zfs_dataset_exists(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM |
 736                     ZFS_TYPE_VOLUME)) {
 737                         zfs_close(zhp);
 738                         nvlist_free(props);
 739                         return (0);
 740                 }
 741                 if (zfs_create_ancestors(g_zfs, argv[1]) != 0) {
 742                         zfs_close(zhp);
 743                         nvlist_free(props);
 744                         return (1);
 745                 }
 746         }
 747
 748         /* pass to libzfs */
 749         ret = zfs_clone(zhp, argv[1], props);
 750
 751         /* create the mountpoint if necessary */
 752         if (ret == 0) {
 753                 if (log_history) {
 754                         (void) zpool_log_history(g_zfs, history_str);
 755                         log_history = B_FALSE;
 756                 }
 757
 758                 ret = zfs_mount_and_share(g_zfs, argv[1], ZFS_TYPE_DATASET);
 759         }
 760
 761         zfs_close(zhp);
 762         nvlist_free(props);
 763
 764         return (!!ret);
 765
 766 usage:
 767         if (zhp)
 768                 zfs_close(zhp);
 769         nvlist_free(props);
 770         usage(B_FALSE);
 771         return (-1);
 772 }
 773
 774 /*
 775  * zfs create [-p] [-o prop=value] ... fs
 776  * zfs create [-ps] [-b blocksize] [-o prop=value] ... -V vol size
 777  *
 778  * Create a new dataset.  This command can be used to create filesystems
 779  * and volumes.  Snapshot creation is handled by 'zfs snapshot'.
 780  * For volumes, the user must specify a size to be used.
 781  *
 782  * The '-s' flag applies only to volumes, and indicates that we should not try
 783  * to set the reservation for this volume.  By default we set a reservation
 784  * equal to the size for any volume.  For pools with SPA_VERSION >=
 785  * SPA_VERSION_REFRESERVATION, we set a refreservation instead.
 786  *
 787  * The '-p' flag creates all the non-existing ancestors of the target first.
 788  */
 789 static int
 790 zfs_do_create(int argc, char **argv)
 791 {
 792         zfs_type_t type = ZFS_TYPE_FILESYSTEM;
 793         uint64_t volsize = 0;
 794         int c;
 795         boolean_t noreserve = B_FALSE;
 796         boolean_t bflag = B_FALSE;
 797         boolean_t parents = B_FALSE;
 798         int ret = 1;
 799         nvlist_t *props;
 800         uint64_t intval;
 801
 802         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
 803                 nomem();
 804
 805         /* check options */
 806         while ((c = getopt(argc, argv, ":V:b:so:p")) != -1) {
 807                 switch (c) {
 808                 case 'V':
 809                         type = ZFS_TYPE_VOLUME;
 810                         if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
 811                                 (void) fprintf(stderr, gettext("bad volume "
 812                                     "size '%s': %s\n"), optarg,
 813                                     libzfs_error_description(g_zfs));
 814                                 goto error;
 815                         }
 816
 817                         if (nvlist_add_uint64(props,
 818                             zfs_prop_to_name(ZFS_PROP_VOLSIZE), intval) != 0)
 819                                 nomem();
 820                         volsize = intval;
 821                         break;
 822                 case 'p':
 823                         parents = B_TRUE;
 824                         break;
 825                 case 'b':
 826                         bflag = B_TRUE;
 827                         if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
 828                                 (void) fprintf(stderr, gettext("bad volume "
 829                                     "block size '%s': %s\n"), optarg,
 830                                     libzfs_error_description(g_zfs));
 831                                 goto error;
 832                         }
 833
 834                         if (nvlist_add_uint64(props,
 835                             zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
 836                             intval) != 0)
 837                                 nomem();
 838                         break;
 839                 case 'o':
 840                         if (!parseprop(props, optarg))
 841                                 goto error;
 842                         break;
 843                 case 's':
 844                         noreserve = B_TRUE;
 845                         break;
 846                 case ':':
 847                         (void) fprintf(stderr, gettext("missing size "
 848                             "argument\n"));
 849                         goto badusage;
 850                 case '?':
 851                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
 852                             optopt);
 853                         goto badusage;
 854                 }
 855         }
 856
 857         if ((bflag || noreserve) && type != ZFS_TYPE_VOLUME) {
 858                 (void) fprintf(stderr, gettext("'-s' and '-b' can only be "
 859                     "used when creating a volume\n"));
 860                 goto badusage;
 861         }
 862
 863         argc -= optind;
 864         argv += optind;
 865
 866         /* check number of arguments */
 867         if (argc == 0) {
 868                 (void) fprintf(stderr, gettext("missing %s argument\n"),
 869                     zfs_type_to_name(type));
 870                 goto badusage;
 871         }
 872         if (argc > 1) {
 873                 (void) fprintf(stderr, gettext("too many arguments\n"));
 874                 goto badusage;
 875         }
 876
 877         if (type == ZFS_TYPE_VOLUME && !noreserve) {
 878                 zpool_handle_t *zpool_handle;
 879                 nvlist_t *real_props = NULL;
 880                 uint64_t spa_version;
 881                 char *p;
 882                 zfs_prop_t resv_prop;
 883                 char *strval;
 884                 char msg[1024];
 885
 886                 if ((p = strchr(argv[0], '/')) != NULL)
 887                         *p = '\0';
 888                 zpool_handle = zpool_open(g_zfs, argv[0]);
 889                 if (p != NULL)
 890                         *p = '/';
 891                 if (zpool_handle == NULL)
 892                         goto error;
 893                 spa_version = zpool_get_prop_int(zpool_handle,
 894                     ZPOOL_PROP_VERSION, NULL);
 895                 if (spa_version >= SPA_VERSION_REFRESERVATION)
 896                         resv_prop = ZFS_PROP_REFRESERVATION;
 897                 else
 898                         resv_prop = ZFS_PROP_RESERVATION;
 899
 900                 (void) snprintf(msg, sizeof (msg),
 901                     gettext("cannot create '%s'"), argv[0]);
 902                 if (props && (real_props = zfs_valid_proplist(g_zfs, type,
 903                     props, 0, NULL, zpool_handle, msg)) == NULL) {
 904                         zpool_close(zpool_handle);
 905                         goto error;
 906                 }
 907                 zpool_close(zpool_handle);
 908
 909                 volsize = zvol_volsize_to_reservation(volsize, real_props);
 910                 nvlist_free(real_props);
 911
 912                 if (nvlist_lookup_string(props, zfs_prop_to_name(resv_prop),
 913                     &strval) != 0) {
 914                         if (nvlist_add_uint64(props,
 915                             zfs_prop_to_name(resv_prop), volsize) != 0) {
 916                                 nvlist_free(props);
 917                                 nomem();
 918                         }
 919                 }
 920         }
 921
 922         if (parents && zfs_name_valid(argv[0], type)) {
 923                 /*
 924                  * Now create the ancestors of target dataset.  If the target
 925                  * already exists and '-p' option was used we should not
 926                  * complain.
 927                  */
 928                 if (zfs_dataset_exists(g_zfs, argv[0], type)) {
 929                         ret = 0;
 930                         goto error;
 931                 }
 932                 if (zfs_create_ancestors(g_zfs, argv[0]) != 0)
 933                         goto error;
 934         }
 935
 936         /* pass to libzfs */
 937         if (zfs_create(g_zfs, argv[0], type, props) != 0)
 938                 goto error;
 939
 940         if (log_history) {
 941                 (void) zpool_log_history(g_zfs, history_str);
 942                 log_history = B_FALSE;
 943         }
 944
 945         ret = zfs_mount_and_share(g_zfs, argv[0], ZFS_TYPE_DATASET);
 946 error:
 947         nvlist_free(props);
 948         return (ret);
 949 badusage:
 950         nvlist_free(props);
 951         usage(B_FALSE);
 952         return (2);
 953 }
 954
 955 /*
 956  * zfs destroy [-rRf] <fs, vol>
 957  * zfs destroy [-rRd] <snap>
 958  *
 959  *      -r      Recursively destroy all children
 960  *      -R      Recursively destroy all dependents, including clones
 961  *      -f      Force unmounting of any dependents
 962  *      -d      If we can't destroy now, mark for deferred destruction
 963  *
 964  * Destroys the given dataset.  By default, it will unmount any filesystems,
 965  * and refuse to destroy a dataset that has any dependents.  A dependent can
 966  * either be a child, or a clone of a child.
 967  */
 968 typedef struct destroy_cbdata {
 969         boolean_t       cb_first;
 970         boolean_t       cb_force;
 971         boolean_t       cb_recurse;
 972         boolean_t       cb_error;
 973         boolean_t       cb_doclones;
 974         zfs_handle_t    *cb_target;
 975         boolean_t       cb_defer_destroy;
 976         boolean_t       cb_verbose;
 977         boolean_t       cb_parsable;
 978         boolean_t       cb_dryrun;
 979         nvlist_t        *cb_nvl;
 980         nvlist_t        *cb_batchedsnaps;
 981
 982         /* first snap in contiguous run */
 983         char            *cb_firstsnap;
 984         /* previous snap in contiguous run */
 985         char            *cb_prevsnap;
 986         int64_t         cb_snapused;
 987         char            *cb_snapspec;
 988         char            *cb_bookmark;
 989 } destroy_cbdata_t;
 990
 991 /*
 992  * Check for any dependents based on the '-r' or '-R' flags.
 993  */
 994 static int
 995 destroy_check_dependent(zfs_handle_t *zhp, void *data)
 996 {
 997         destroy_cbdata_t *cbp = data;
 998         const char *tname = zfs_get_name(cbp->cb_target);
 999         const char *name = zfs_get_name(zhp);
1000
1001         if (strncmp(tname, name, strlen(tname)) == 0 &&
1002             (name[strlen(tname)] == '/' || name[strlen(tname)] == '@')) {
1003                 /*
1004                  * This is a direct descendant, not a clone somewhere else in
1005                  * the hierarchy.
1006                  */
1007                 if (cbp->cb_recurse)
1008                         goto out;
1009
1010                 if (cbp->cb_first) {
1011                         (void) fprintf(stderr, gettext("cannot destroy '%s': "
1012                             "%s has children\n"),
1013                             zfs_get_name(cbp->cb_target),
1014                             zfs_type_to_name(zfs_get_type(cbp->cb_target)));
1015                         (void) fprintf(stderr, gettext("use '-r' to destroy "
1016                             "the following datasets:\n"));
1017                         cbp->cb_first = B_FALSE;
1018                         cbp->cb_error = B_TRUE;
1019                 }
1020
1021                 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
1022         } else {
1023                 /*
1024                  * This is a clone.  We only want to report this if the '-r'
1025                  * wasn't specified, or the target is a snapshot.
1026                  */
1027                 if (!cbp->cb_recurse &&
1028                     zfs_get_type(cbp->cb_target) != ZFS_TYPE_SNAPSHOT)
1029                         goto out;
1030
1031                 if (cbp->cb_first) {
1032                         (void) fprintf(stderr, gettext("cannot destroy '%s': "
1033                             "%s has dependent clones\n"),
1034                             zfs_get_name(cbp->cb_target),
1035                             zfs_type_to_name(zfs_get_type(cbp->cb_target)));
1036                         (void) fprintf(stderr, gettext("use '-R' to destroy "
1037                             "the following datasets:\n"));
1038                         cbp->cb_first = B_FALSE;
1039                         cbp->cb_error = B_TRUE;
1040                         cbp->cb_dryrun = B_TRUE;
1041                 }
1042
1043                 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
1044         }
1045
1046 out:
1047         zfs_close(zhp);
1048         return (0);
1049 }
1050
1051 static int
1052 destroy_callback(zfs_handle_t *zhp, void *data)
1053 {
1054         destroy_cbdata_t *cb = data;
1055         const char *name = zfs_get_name(zhp);
1056
1057         if (cb->cb_verbose) {
1058                 if (cb->cb_parsable) {
1059                         (void) printf("destroy\t%s\n", name);
1060                 } else if (cb->cb_dryrun) {
1061                         (void) printf(gettext("would destroy %s\n"),
1062                             name);
1063                 } else {
1064                         (void) printf(gettext("will destroy %s\n"),
1065                             name);
1066                 }
1067         }
1068
1069         /*
1070          * Ignore pools (which we've already flagged as an error before getting
1071          * here).
1072          */
1073         if (strchr(zfs_get_name(zhp), '/') == NULL &&
1074             zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
1075                 zfs_close(zhp);
1076                 return (0);
1077         }
1078         if (cb->cb_dryrun) {
1079                 zfs_close(zhp);
1080                 return (0);
1081         }
1082
1083         /*
1084          * We batch up all contiguous snapshots (even of different
1085          * filesystems) and destroy them with one ioctl.  We can't
1086          * simply do all snap deletions and then all fs deletions,
1087          * because we must delete a clone before its origin.
1088          */
1089         if (zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT) {
1090                 fnvlist_add_boolean(cb->cb_batchedsnaps, name);
1091         } else {
1092                 int error = zfs_destroy_snaps_nvl(g_zfs,
1093                     cb->cb_batchedsnaps, B_FALSE);
1094                 fnvlist_free(cb->cb_batchedsnaps);
1095                 cb->cb_batchedsnaps = fnvlist_alloc();
1096
1097                 if (error != 0 ||
1098                     zfs_unmount(zhp, NULL, cb->cb_force ? MS_FORCE : 0) != 0 ||
1099                     zfs_destroy(zhp, cb->cb_defer_destroy) != 0) {
1100                         zfs_close(zhp);
1101                         return (-1);
1102                 }
1103         }
1104
1105         zfs_close(zhp);
1106         return (0);
1107 }
1108
1109 static int
1110 destroy_print_cb(zfs_handle_t *zhp, void *arg)
1111 {
1112         destroy_cbdata_t *cb = arg;
1113         const char *name = zfs_get_name(zhp);
1114         int err = 0;
1115
1116         if (nvlist_exists(cb->cb_nvl, name)) {
1117                 if (cb->cb_firstsnap == NULL)
1118                         cb->cb_firstsnap = strdup(name);
1119                 if (cb->cb_prevsnap != NULL)
1120                         free(cb->cb_prevsnap);
1121                 /* this snap continues the current range */
1122                 cb->cb_prevsnap = strdup(name);
1123                 if (cb->cb_firstsnap == NULL || cb->cb_prevsnap == NULL)
1124                         nomem();
1125                 if (cb->cb_verbose) {
1126                         if (cb->cb_parsable) {
1127                                 (void) printf("destroy\t%s\n", name);
1128                         } else if (cb->cb_dryrun) {
1129                                 (void) printf(gettext("would destroy %s\n"),
1130                                     name);
1131                         } else {
1132                                 (void) printf(gettext("will destroy %s\n"),
1133                                     name);
1134                         }
1135                 }
1136         } else if (cb->cb_firstsnap != NULL) {
1137                 /* end of this range */
1138                 uint64_t used = 0;
1139                 err = lzc_snaprange_space(cb->cb_firstsnap,
1140                     cb->cb_prevsnap, &used);
1141                 cb->cb_snapused += used;
1142                 free(cb->cb_firstsnap);
1143                 cb->cb_firstsnap = NULL;
1144                 free(cb->cb_prevsnap);
1145                 cb->cb_prevsnap = NULL;
1146         }
1147         zfs_close(zhp);
1148         return (err);
1149 }
1150
1151 static int
1152 destroy_print_snapshots(zfs_handle_t *fs_zhp, destroy_cbdata_t *cb)
1153 {
1154         int err;
1155         assert(cb->cb_firstsnap == NULL);
1156         assert(cb->cb_prevsnap == NULL);
1157         err = zfs_iter_snapshots_sorted(fs_zhp, destroy_print_cb, cb);
1158         if (cb->cb_firstsnap != NULL) {
1159                 uint64_t used = 0;
1160                 if (err == 0) {
1161                         err = lzc_snaprange_space(cb->cb_firstsnap,
1162                             cb->cb_prevsnap, &used);
1163                 }
1164                 cb->cb_snapused += used;
1165                 free(cb->cb_firstsnap);
1166                 cb->cb_firstsnap = NULL;
1167                 free(cb->cb_prevsnap);
1168                 cb->cb_prevsnap = NULL;
1169         }
1170         return (err);
1171 }
1172
1173 static int
1174 snapshot_to_nvl_cb(zfs_handle_t *zhp, void *arg)
1175 {
1176         destroy_cbdata_t *cb = arg;
1177         int err = 0;
1178
1179         /* Check for clones. */
1180         if (!cb->cb_doclones && !cb->cb_defer_destroy) {
1181                 cb->cb_target = zhp;
1182                 cb->cb_first = B_TRUE;
1183                 err = zfs_iter_dependents(zhp, B_TRUE,
1184                     destroy_check_dependent, cb);
1185         }
1186
1187         if (err == 0) {
1188                 if (nvlist_add_boolean(cb->cb_nvl, zfs_get_name(zhp)))
1189                         nomem();
1190         }
1191         zfs_close(zhp);
1192         return (err);
1193 }
1194
1195 static int
1196 gather_snapshots(zfs_handle_t *zhp, void *arg)
1197 {
1198         destroy_cbdata_t *cb = arg;
1199         int err = 0;
1200
1201         err = zfs_iter_snapspec(zhp, cb->cb_snapspec, snapshot_to_nvl_cb, cb);
1202         if (err == ENOENT)
1203                 err = 0;
1204         if (err != 0)
1205                 goto out;
1206
1207         if (cb->cb_verbose) {
1208                 err = destroy_print_snapshots(zhp, cb);
1209                 if (err != 0)
1210                         goto out;
1211         }
1212
1213         if (cb->cb_recurse)
1214                 err = zfs_iter_filesystems(zhp, gather_snapshots, cb);
1215
1216 out:
1217         zfs_close(zhp);
1218         return (err);
1219 }
1220
1221 static int
1222 destroy_clones(destroy_cbdata_t *cb)
1223 {
1224         nvpair_t *pair;
1225         for (pair = nvlist_next_nvpair(cb->cb_nvl, NULL);
1226             pair != NULL;
1227             pair = nvlist_next_nvpair(cb->cb_nvl, pair)) {
1228                 zfs_handle_t *zhp = zfs_open(g_zfs, nvpair_name(pair),
1229                     ZFS_TYPE_SNAPSHOT);
1230                 if (zhp != NULL) {
1231                         boolean_t defer = cb->cb_defer_destroy;
1232                         int err;
1233
1234                         /*
1235                          * We can't defer destroy non-snapshots, so set it to
1236                          * false while destroying the clones.
1237                          */
1238                         cb->cb_defer_destroy = B_FALSE;
1239                         err = zfs_iter_dependents(zhp, B_FALSE,
1240                             destroy_callback, cb);
1241                         cb->cb_defer_destroy = defer;
1242                         zfs_close(zhp);
1243                         if (err != 0)
1244                                 return (err);
1245                 }
1246         }
1247         return (0);
1248 }
1249
1250 static int
1251 zfs_do_destroy(int argc, char **argv)
1252 {
1253         destroy_cbdata_t cb = { 0 };
1254         int rv = 0;
1255         int err = 0;
1256         int c;
1257         zfs_handle_t *zhp = NULL;
1258         char *at, *pound;
1259         zfs_type_t type = ZFS_TYPE_DATASET;
1260
1261         /* check options */
1262         while ((c = getopt(argc, argv, "vpndfrR")) != -1) {
1263                 switch (c) {
1264                 case 'v':
1265                         cb.cb_verbose = B_TRUE;
1266                         break;
1267                 case 'p':
1268                         cb.cb_verbose = B_TRUE;
1269                         cb.cb_parsable = B_TRUE;
1270                         break;
1271                 case 'n':
1272                         cb.cb_dryrun = B_TRUE;
1273                         break;
1274                 case 'd':
1275                         cb.cb_defer_destroy = B_TRUE;
1276                         type = ZFS_TYPE_SNAPSHOT;
1277                         break;
1278                 case 'f':
1279                         cb.cb_force = B_TRUE;
1280                         break;
1281                 case 'r':
1282                         cb.cb_recurse = B_TRUE;
1283                         break;
1284                 case 'R':
1285                         cb.cb_recurse = B_TRUE;
1286                         cb.cb_doclones = B_TRUE;
1287                         break;
1288                 case '?':
1289                 default:
1290                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1291                             optopt);
1292                         usage(B_FALSE);
1293                 }
1294         }
1295
1296         argc -= optind;
1297         argv += optind;
1298
1299         /* check number of arguments */
1300         if (argc == 0) {
1301                 (void) fprintf(stderr, gettext("missing dataset argument\n"));
1302                 usage(B_FALSE);
1303         }
1304         if (argc > 1) {
1305                 (void) fprintf(stderr, gettext("too many arguments\n"));
1306                 usage(B_FALSE);
1307         }
1308
1309         at = strchr(argv[0], '@');
1310         pound = strchr(argv[0], '#');
1311         if (at != NULL) {
1312
1313                 /* Build the list of snaps to destroy in cb_nvl. */
1314                 cb.cb_nvl = fnvlist_alloc();
1315
1316                 *at = '\0';
1317                 zhp = zfs_open(g_zfs, argv[0],
1318                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
1319                 if (zhp == NULL) {
1320                         nvlist_free(cb.cb_nvl);
1321                         return (1);
1322                 }
1323
1324                 cb.cb_snapspec = at + 1;
1325                 if (gather_snapshots(zfs_handle_dup(zhp), &cb) != 0 ||
1326                     cb.cb_error) {
1327                         rv = 1;
1328                         goto out;
1329                 }
1330
1331                 if (nvlist_empty(cb.cb_nvl)) {
1332                         (void) fprintf(stderr, gettext("could not find any "
1333                             "snapshots to destroy; check snapshot names.\n"));
1334                         rv = 1;
1335                         goto out;
1336                 }
1337
1338                 if (cb.cb_verbose) {
1339                         char buf[16];
1340                         zfs_nicebytes(cb.cb_snapused, buf, sizeof (buf));
1341                         if (cb.cb_parsable) {
1342                                 (void) printf("reclaim\t%llu\n",
1343                                     (u_longlong_t)cb.cb_snapused);
1344                         } else if (cb.cb_dryrun) {
1345                                 (void) printf(gettext("would reclaim %s\n"),
1346                                     buf);
1347                         } else {
1348                                 (void) printf(gettext("will reclaim %s\n"),
1349                                     buf);
1350                         }
1351                 }
1352
1353                 if (!cb.cb_dryrun) {
1354                         if (cb.cb_doclones) {
1355                                 cb.cb_batchedsnaps = fnvlist_alloc();
1356                                 err = destroy_clones(&cb);
1357                                 if (err == 0) {
1358                                         err = zfs_destroy_snaps_nvl(g_zfs,
1359                                             cb.cb_batchedsnaps, B_FALSE);
1360                                 }
1361                                 if (err != 0) {
1362                                         rv = 1;
1363                                         goto out;
1364                                 }
1365                         }
1366                         if (err == 0) {
1367                                 err = zfs_destroy_snaps_nvl(g_zfs, cb.cb_nvl,
1368                                     cb.cb_defer_destroy);
1369                         }
1370                 }
1371
1372                 if (err != 0)
1373                         rv = 1;
1374         } else if (pound != NULL) {
1375                 int err;
1376                 nvlist_t *nvl;
1377
1378                 if (cb.cb_dryrun) {
1379                         (void) fprintf(stderr,
1380                             "dryrun is not supported with bookmark\n");
1381                         return (-1);
1382                 }
1383
1384                 if (cb.cb_defer_destroy) {
1385                         (void) fprintf(stderr,
1386                             "defer destroy is not supported with bookmark\n");
1387                         return (-1);
1388                 }
1389
1390                 if (cb.cb_recurse) {
1391                         (void) fprintf(stderr,
1392                             "recursive is not supported with bookmark\n");
1393                         return (-1);
1394                 }
1395
1396                 if (!zfs_bookmark_exists(argv[0])) {
1397                         (void) fprintf(stderr, gettext("bookmark '%s' "
1398                             "does not exist.\n"), argv[0]);
1399                         return (1);
1400                 }
1401
1402                 nvl = fnvlist_alloc();
1403                 fnvlist_add_boolean(nvl, argv[0]);
1404
1405                 err = lzc_destroy_bookmarks(nvl, NULL);
1406                 if (err != 0) {
1407                         (void) zfs_standard_error(g_zfs, err,
1408                             "cannot destroy bookmark");
1409                 }
1410
1411                 nvlist_free(nvl);
1412
1413                 return (err);
1414         } else {
1415                 /* Open the given dataset */
1416                 if ((zhp = zfs_open(g_zfs, argv[0], type)) == NULL)
1417                         return (1);
1418
1419                 cb.cb_target = zhp;
1420
1421                 /*
1422                  * Perform an explicit check for pools before going any further.
1423                  */
1424                 if (!cb.cb_recurse && strchr(zfs_get_name(zhp), '/') == NULL &&
1425                     zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
1426                         (void) fprintf(stderr, gettext("cannot destroy '%s': "
1427                             "operation does not apply to pools\n"),
1428                             zfs_get_name(zhp));
1429                         (void) fprintf(stderr, gettext("use 'zfs destroy -r "
1430                             "%s' to destroy all datasets in the pool\n"),
1431                             zfs_get_name(zhp));
1432                         (void) fprintf(stderr, gettext("use 'zpool destroy %s' "
1433                             "to destroy the pool itself\n"), zfs_get_name(zhp));
1434                         rv = 1;
1435                         goto out;
1436                 }
1437
1438                 /*
1439                  * Check for any dependents and/or clones.
1440                  */
1441                 cb.cb_first = B_TRUE;
1442                 if (!cb.cb_doclones &&
1443                     zfs_iter_dependents(zhp, B_TRUE, destroy_check_dependent,
1444                     &cb) != 0) {
1445                         rv = 1;
1446                         goto out;
1447                 }
1448
1449                 if (cb.cb_error) {
1450                         rv = 1;
1451                         goto out;
1452                 }
1453
1454                 cb.cb_batchedsnaps = fnvlist_alloc();
1455                 if (zfs_iter_dependents(zhp, B_FALSE, destroy_callback,
1456                     &cb) != 0) {
1457                         rv = 1;
1458                         goto out;
1459                 }
1460
1461                 /*
1462                  * Do the real thing.  The callback will close the
1463                  * handle regardless of whether it succeeds or not.
1464                  */
1465                 err = destroy_callback(zhp, &cb);
1466                 zhp = NULL;
1467                 if (err == 0) {
1468                         err = zfs_destroy_snaps_nvl(g_zfs,
1469                             cb.cb_batchedsnaps, cb.cb_defer_destroy);
1470                 }
1471                 if (err != 0)
1472                         rv = 1;
1473         }
1474
1475 out:
1476         fnvlist_free(cb.cb_batchedsnaps);
1477         fnvlist_free(cb.cb_nvl);
1478         if (zhp != NULL)
1479                 zfs_close(zhp);
1480         return (rv);
1481 }
1482
1483 static boolean_t
1484 is_recvd_column(zprop_get_cbdata_t *cbp)
1485 {
1486         int i;
1487         zfs_get_column_t col;
1488
1489         for (i = 0; i < ZFS_GET_NCOLS &&
1490             (col = cbp->cb_columns[i]) != GET_COL_NONE; i++)
1491                 if (col == GET_COL_RECVD)
1492                         return (B_TRUE);
1493         return (B_FALSE);
1494 }
1495
1496 /*
1497  * zfs get [-rHp] [-o all | field[,field]...] [-s source[,source]...]
1498  *      < all | property[,property]... > < fs | snap | vol > ...
1499  *
1500  *      -r      recurse over any child datasets
1501  *      -H      scripted mode.  Headers are stripped, and fields are separated
1502  *              by tabs instead of spaces.
1503  *      -o      Set of fields to display.  One of "name,property,value,
1504  *              received,source". Default is "name,property,value,source".
1505  *              "all" is an alias for all five.
1506  *      -s      Set of sources to allow.  One of
1507  *              "local,default,inherited,received,temporary,none".  Default is
1508  *              all six.
1509  *      -p      Display values in parsable (literal) format.
1510  *
1511  *  Prints properties for the given datasets.  The user can control which
1512  *  columns to display as well as which property types to allow.
1513  */
1514
1515 /*
1516  * Invoked to display the properties for a single dataset.
1517  */
1518 static int
1519 get_callback(zfs_handle_t *zhp, void *data)
1520 {
1521         char buf[ZFS_MAXPROPLEN];
1522         char rbuf[ZFS_MAXPROPLEN];
1523         zprop_source_t sourcetype;
1524         char source[ZFS_MAX_DATASET_NAME_LEN];
1525         zprop_get_cbdata_t *cbp = data;
1526         nvlist_t *user_props = zfs_get_user_props(zhp);
1527         zprop_list_t *pl = cbp->cb_proplist;
1528         nvlist_t *propval;
1529         char *strval;
1530         char *sourceval;
1531         boolean_t received = is_recvd_column(cbp);
1532
1533         for (; pl != NULL; pl = pl->pl_next) {
1534                 char *recvdval = NULL;
1535                 /*
1536                  * Skip the special fake placeholder.  This will also skip over
1537                  * the name property when 'all' is specified.
1538                  */
1539                 if (pl->pl_prop == ZFS_PROP_NAME &&
1540                     pl == cbp->cb_proplist)
1541                         continue;
1542
1543                 if (pl->pl_prop != ZPROP_INVAL) {
1544                         if (zfs_prop_get(zhp, pl->pl_prop, buf,
1545                             sizeof (buf), &sourcetype, source,
1546                             sizeof (source),
1547                             cbp->cb_literal) != 0) {
1548                                 if (pl->pl_all)
1549                                         continue;
1550                                 if (!zfs_prop_valid_for_type(pl->pl_prop,
1551                                     ZFS_TYPE_DATASET, B_FALSE)) {
1552                                         (void) fprintf(stderr,
1553                                             gettext("No such property '%s'\n"),
1554                                             zfs_prop_to_name(pl->pl_prop));
1555                                         continue;
1556                                 }
1557                                 sourcetype = ZPROP_SRC_NONE;
1558                                 (void) strlcpy(buf, "-", sizeof (buf));
1559                         }
1560
1561                         if (received && (zfs_prop_get_recvd(zhp,
1562                             zfs_prop_to_name(pl->pl_prop), rbuf, sizeof (rbuf),
1563                             cbp->cb_literal) == 0))
1564                                 recvdval = rbuf;
1565
1566                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1567                             zfs_prop_to_name(pl->pl_prop),
1568                             buf, sourcetype, source, recvdval);
1569                 } else if (zfs_prop_userquota(pl->pl_user_prop)) {
1570                         sourcetype = ZPROP_SRC_LOCAL;
1571
1572                         if (zfs_prop_get_userquota(zhp, pl->pl_user_prop,
1573                             buf, sizeof (buf), cbp->cb_literal) != 0) {
1574                                 sourcetype = ZPROP_SRC_NONE;
1575                                 (void) strlcpy(buf, "-", sizeof (buf));
1576                         }
1577
1578                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1579                             pl->pl_user_prop, buf, sourcetype, source, NULL);
1580                 } else if (zfs_prop_written(pl->pl_user_prop)) {
1581                         sourcetype = ZPROP_SRC_LOCAL;
1582
1583                         if (zfs_prop_get_written(zhp, pl->pl_user_prop,
1584                             buf, sizeof (buf), cbp->cb_literal) != 0) {
1585                                 sourcetype = ZPROP_SRC_NONE;
1586                                 (void) strlcpy(buf, "-", sizeof (buf));
1587                         }
1588
1589                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1590                             pl->pl_user_prop, buf, sourcetype, source, NULL);
1591                 } else {
1592                         if (nvlist_lookup_nvlist(user_props,
1593                             pl->pl_user_prop, &propval) != 0) {
1594                                 if (pl->pl_all)
1595                                         continue;
1596                                 sourcetype = ZPROP_SRC_NONE;
1597                                 strval = "-";
1598                         } else {
1599                                 verify(nvlist_lookup_string(propval,
1600                                     ZPROP_VALUE, &strval) == 0);
1601                                 verify(nvlist_lookup_string(propval,
1602                                     ZPROP_SOURCE, &sourceval) == 0);
1603
1604                                 if (strcmp(sourceval,
1605                                     zfs_get_name(zhp)) == 0) {
1606                                         sourcetype = ZPROP_SRC_LOCAL;
1607                                 } else if (strcmp(sourceval,
1608                                     ZPROP_SOURCE_VAL_RECVD) == 0) {
1609                                         sourcetype = ZPROP_SRC_RECEIVED;
1610                                 } else {
1611                                         sourcetype = ZPROP_SRC_INHERITED;
1612                                         (void) strlcpy(source,
1613                                             sourceval, sizeof (source));
1614                                 }
1615                         }
1616
1617                         if (received && (zfs_prop_get_recvd(zhp,
1618                             pl->pl_user_prop, rbuf, sizeof (rbuf),
1619                             cbp->cb_literal) == 0))
1620                                 recvdval = rbuf;
1621
1622                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1623                             pl->pl_user_prop, strval, sourcetype,
1624                             source, recvdval);
1625                 }
1626         }
1627
1628         return (0);
1629 }
1630
1631 static int
1632 zfs_do_get(int argc, char **argv)
1633 {
1634         zprop_get_cbdata_t cb = { 0 };
1635         int i, c, flags = ZFS_ITER_ARGS_CAN_BE_PATHS;
1636         int types = ZFS_TYPE_DATASET | ZFS_TYPE_BOOKMARK;
1637         char *value, *fields;
1638         int ret = 0;
1639         int limit = 0;
1640         zprop_list_t fake_name = { 0 };
1641
1642         /*
1643          * Set up default columns and sources.
1644          */
1645         cb.cb_sources = ZPROP_SRC_ALL;
1646         cb.cb_columns[0] = GET_COL_NAME;
1647         cb.cb_columns[1] = GET_COL_PROPERTY;
1648         cb.cb_columns[2] = GET_COL_VALUE;
1649         cb.cb_columns[3] = GET_COL_SOURCE;
1650         cb.cb_type = ZFS_TYPE_DATASET;
1651
1652         /* check options */
1653         while ((c = getopt(argc, argv, ":d:o:s:rt:Hp")) != -1) {
1654                 switch (c) {
1655                 case 'p':
1656                         cb.cb_literal = B_TRUE;
1657                         break;
1658                 case 'd':
1659                         limit = parse_depth(optarg, &flags);
1660                         break;
1661                 case 'r':
1662                         flags |= ZFS_ITER_RECURSE;
1663                         break;
1664                 case 'H':
1665                         cb.cb_scripted = B_TRUE;
1666                         break;
1667                 case ':':
1668                         (void) fprintf(stderr, gettext("missing argument for "
1669                             "'%c' option\n"), optopt);
1670                         usage(B_FALSE);
1671                         break;
1672                 case 'o':
1673                         /*
1674                          * Process the set of columns to display.  We zero out
1675                          * the structure to give us a blank slate.
1676                          */
1677                         bzero(&cb.cb_columns, sizeof (cb.cb_columns));
1678                         i = 0;
1679                         while (*optarg != '\0') {
1680                                 static char *col_subopts[] =
1681                                     { "name", "property", "value", "received",
1682                                     "source", "all", NULL };
1683
1684                                 if (i == ZFS_GET_NCOLS) {
1685                                         (void) fprintf(stderr, gettext("too "
1686                                             "many fields given to -o "
1687                                             "option\n"));
1688                                         usage(B_FALSE);
1689                                 }
1690
1691                                 switch (getsubopt(&optarg, col_subopts,
1692                                     &value)) {
1693                                 case 0:
1694                                         cb.cb_columns[i++] = GET_COL_NAME;
1695                                         break;
1696                                 case 1:
1697                                         cb.cb_columns[i++] = GET_COL_PROPERTY;
1698                                         break;
1699                                 case 2:
1700                                         cb.cb_columns[i++] = GET_COL_VALUE;
1701                                         break;
1702                                 case 3:
1703                                         cb.cb_columns[i++] = GET_COL_RECVD;
1704                                         flags |= ZFS_ITER_RECVD_PROPS;
1705                                         break;
1706                                 case 4:
1707                                         cb.cb_columns[i++] = GET_COL_SOURCE;
1708                                         break;
1709                                 case 5:
1710                                         if (i > 0) {
1711                                                 (void) fprintf(stderr,
1712                                                     gettext("\"all\" conflicts "
1713                                                     "with specific fields "
1714                                                     "given to -o option\n"));
1715                                                 usage(B_FALSE);
1716                                         }
1717                                         cb.cb_columns[0] = GET_COL_NAME;
1718                                         cb.cb_columns[1] = GET_COL_PROPERTY;
1719                                         cb.cb_columns[2] = GET_COL_VALUE;
1720                                         cb.cb_columns[3] = GET_COL_RECVD;
1721                                         cb.cb_columns[4] = GET_COL_SOURCE;
1722                                         flags |= ZFS_ITER_RECVD_PROPS;
1723                                         i = ZFS_GET_NCOLS;
1724                                         break;
1725                                 default:
1726                                         (void) fprintf(stderr,
1727                                             gettext("invalid column name "
1728                                             "'%s'\n"), value);
1729                                         usage(B_FALSE);
1730                                 }
1731                         }
1732                         break;
1733
1734                 case 's':
1735                         cb.cb_sources = 0;
1736                         while (*optarg != '\0') {
1737                                 static char *source_subopts[] = {
1738                                         "local", "default", "inherited",
1739                                         "received", "temporary", "none",
1740                                         NULL };
1741
1742                                 switch (getsubopt(&optarg, source_subopts,
1743                                     &value)) {
1744                                 case 0:
1745                                         cb.cb_sources |= ZPROP_SRC_LOCAL;
1746                                         break;
1747                                 case 1:
1748                                         cb.cb_sources |= ZPROP_SRC_DEFAULT;
1749                                         break;
1750                                 case 2:
1751                                         cb.cb_sources |= ZPROP_SRC_INHERITED;
1752                                         break;
1753                                 case 3:
1754                                         cb.cb_sources |= ZPROP_SRC_RECEIVED;
1755                                         break;
1756                                 case 4:
1757                                         cb.cb_sources |= ZPROP_SRC_TEMPORARY;
1758                                         break;
1759                                 case 5:
1760                                         cb.cb_sources |= ZPROP_SRC_NONE;
1761                                         break;
1762                                 default:
1763                                         (void) fprintf(stderr,
1764                                             gettext("invalid source "
1765                                             "'%s'\n"), value);
1766                                         usage(B_FALSE);
1767                                 }
1768                         }
1769                         break;
1770
1771                 case 't':
1772                         types = 0;
1773                         flags &= ~ZFS_ITER_PROP_LISTSNAPS;
1774                         while (*optarg != '\0') {
1775                                 static char *type_subopts[] = { "filesystem",
1776                                     "volume", "snapshot", "bookmark",
1777                                     "all", NULL };
1778
1779                                 switch (getsubopt(&optarg, type_subopts,
1780                                     &value)) {
1781                                 case 0:
1782                                         types |= ZFS_TYPE_FILESYSTEM;
1783                                         break;
1784                                 case 1:
1785                                         types |= ZFS_TYPE_VOLUME;
1786                                         break;
1787                                 case 2:
1788                                         types |= ZFS_TYPE_SNAPSHOT;
1789                                         break;
1790                                 case 3:
1791                                         types |= ZFS_TYPE_BOOKMARK;
1792                                         break;
1793                                 case 4:
1794                                         types = ZFS_TYPE_DATASET |
1795                                             ZFS_TYPE_BOOKMARK;
1796                                         break;
1797
1798                                 default:
1799                                         (void) fprintf(stderr,
1800                                             gettext("invalid type '%s'\n"),
1801                                             value);
1802                                         usage(B_FALSE);
1803                                 }
1804                         }
1805                         break;
1806
1807                 case '?':
1808                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1809                             optopt);
1810                         usage(B_FALSE);
1811                 }
1812         }
1813
1814         argc -= optind;
1815         argv += optind;
1816
1817         if (argc < 1) {
1818                 (void) fprintf(stderr, gettext("missing property "
1819                     "argument\n"));
1820                 usage(B_FALSE);
1821         }
1822
1823         fields = argv[0];
1824
1825         if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
1826             != 0)
1827                 usage(B_FALSE);
1828
1829         argc--;
1830         argv++;
1831
1832         /*
1833          * As part of zfs_expand_proplist(), we keep track of the maximum column
1834          * width for each property.  For the 'NAME' (and 'SOURCE') columns, we
1835          * need to know the maximum name length.  However, the user likely did
1836          * not specify 'name' as one of the properties to fetch, so we need to
1837          * make sure we always include at least this property for
1838          * print_get_headers() to work properly.
1839          */
1840         if (cb.cb_proplist != NULL) {
1841                 fake_name.pl_prop = ZFS_PROP_NAME;
1842                 fake_name.pl_width = strlen(gettext("NAME"));
1843                 fake_name.pl_next = cb.cb_proplist;
1844                 cb.cb_proplist = &fake_name;
1845         }
1846
1847         cb.cb_first = B_TRUE;
1848
1849         /* run for each object */
1850         ret = zfs_for_each(argc, argv, flags, types, NULL,
1851             &cb.cb_proplist, limit, get_callback, &cb);
1852
1853         if (cb.cb_proplist == &fake_name)
1854                 zprop_free_list(fake_name.pl_next);
1855         else
1856                 zprop_free_list(cb.cb_proplist);
1857
1858         return (ret);
1859 }
1860
1861 /*
1862  * inherit [-rS] <property> <fs|vol> ...
1863  *
1864  *      -r      Recurse over all children
1865  *      -S      Revert to received value, if any
1866  *
1867  * For each dataset specified on the command line, inherit the given property
1868  * from its parent.  Inheriting a property at the pool level will cause it to
1869  * use the default value.  The '-r' flag will recurse over all children, and is
1870  * useful for setting a property on a hierarchy-wide basis, regardless of any
1871  * local modifications for each dataset.
1872  */
1873
1874 typedef struct inherit_cbdata {
1875         const char *cb_propname;
1876         boolean_t cb_received;
1877 } inherit_cbdata_t;
1878
1879 static int
1880 inherit_recurse_cb(zfs_handle_t *zhp, void *data)
1881 {
1882         inherit_cbdata_t *cb = data;
1883         zfs_prop_t prop = zfs_name_to_prop(cb->cb_propname);
1884
1885         /*
1886          * If we're doing it recursively, then ignore properties that
1887          * are not valid for this type of dataset.
1888          */
1889         if (prop != ZPROP_INVAL &&
1890             !zfs_prop_valid_for_type(prop, zfs_get_type(zhp), B_FALSE))
1891                 return (0);
1892
1893         return (zfs_prop_inherit(zhp, cb->cb_propname, cb->cb_received) != 0);
1894 }
1895
1896 static int
1897 inherit_cb(zfs_handle_t *zhp, void *data)
1898 {
1899         inherit_cbdata_t *cb = data;
1900
1901         return (zfs_prop_inherit(zhp, cb->cb_propname, cb->cb_received) != 0);
1902 }
1903
1904 static int
1905 zfs_do_inherit(int argc, char **argv)
1906 {
1907         int c;
1908         zfs_prop_t prop;
1909         inherit_cbdata_t cb = { 0 };
1910         char *propname;
1911         int ret = 0;
1912         int flags = 0;
1913         boolean_t received = B_FALSE;
1914
1915         /* check options */
1916         while ((c = getopt(argc, argv, "rS")) != -1) {
1917                 switch (c) {
1918                 case 'r':
1919                         flags |= ZFS_ITER_RECURSE;
1920                         break;
1921                 case 'S':
1922                         received = B_TRUE;
1923                         break;
1924                 case '?':
1925                 default:
1926                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1927                             optopt);
1928                         usage(B_FALSE);
1929                 }
1930         }
1931
1932         argc -= optind;
1933         argv += optind;
1934
1935         /* check number of arguments */
1936         if (argc < 1) {
1937                 (void) fprintf(stderr, gettext("missing property argument\n"));
1938                 usage(B_FALSE);
1939         }
1940         if (argc < 2) {
1941                 (void) fprintf(stderr, gettext("missing dataset argument\n"));
1942                 usage(B_FALSE);
1943         }
1944
1945         propname = argv[0];
1946         argc--;
1947         argv++;
1948
1949         if ((prop = zfs_name_to_prop(propname)) != ZPROP_INVAL) {
1950                 if (zfs_prop_readonly(prop)) {
1951                         (void) fprintf(stderr, gettext(
1952                             "%s property is read-only\n"),
1953                             propname);
1954                         return (1);
1955                 }
1956                 if (!zfs_prop_inheritable(prop) && !received) {
1957                         (void) fprintf(stderr, gettext("'%s' property cannot "
1958                             "be inherited\n"), propname);
1959                         if (prop == ZFS_PROP_QUOTA ||
1960                             prop == ZFS_PROP_RESERVATION ||
1961                             prop == ZFS_PROP_REFQUOTA ||
1962                             prop == ZFS_PROP_REFRESERVATION) {
1963                                 (void) fprintf(stderr, gettext("use 'zfs set "
1964                                     "%s=none' to clear\n"), propname);
1965                                 (void) fprintf(stderr, gettext("use 'zfs "
1966                                     "inherit -S %s' to revert to received "
1967                                     "value\n"), propname);
1968                         }
1969                         return (1);
1970                 }
1971                 if (received && (prop == ZFS_PROP_VOLSIZE ||
1972                     prop == ZFS_PROP_VERSION)) {
1973                         (void) fprintf(stderr, gettext("'%s' property cannot "
1974                             "be reverted to a received value\n"), propname);
1975                         return (1);
1976                 }
1977         } else if (!zfs_prop_user(propname)) {
1978                 (void) fprintf(stderr, gettext("invalid property '%s'\n"),
1979                     propname);
1980                 usage(B_FALSE);
1981         }
1982
1983         cb.cb_propname = propname;
1984         cb.cb_received = received;
1985
1986         if (flags & ZFS_ITER_RECURSE) {
1987                 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
1988                     NULL, NULL, 0, inherit_recurse_cb, &cb);
1989         } else {
1990                 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
1991                     NULL, NULL, 0, inherit_cb, &cb);
1992         }
1993
1994         return (ret);
1995 }
1996
1997 typedef struct upgrade_cbdata {
1998         uint64_t cb_numupgraded;
1999         uint64_t cb_numsamegraded;
2000         uint64_t cb_numfailed;
2001         uint64_t cb_version;
2002         boolean_t cb_newer;
2003         boolean_t cb_foundone;
2004         char cb_lastfs[ZFS_MAX_DATASET_NAME_LEN];
2005 } upgrade_cbdata_t;
2006
2007 static int
2008 same_pool(zfs_handle_t *zhp, const char *name)
2009 {
2010         int len1 = strcspn(name, "/@");
2011         const char *zhname = zfs_get_name(zhp);
2012         int len2 = strcspn(zhname, "/@");
2013
2014         if (len1 != len2)
2015                 return (B_FALSE);
2016         return (strncmp(name, zhname, len1) == 0);
2017 }
2018
2019 static int
2020 upgrade_list_callback(zfs_handle_t *zhp, void *data)
2021 {
2022         upgrade_cbdata_t *cb = data;
2023         int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
2024
2025         /* list if it's old/new */
2026         if ((!cb->cb_newer && version < ZPL_VERSION) ||
2027             (cb->cb_newer && version > ZPL_VERSION)) {
2028                 char *str;
2029                 if (cb->cb_newer) {
2030                         str = gettext("The following filesystems are "
2031                             "formatted using a newer software version and\n"
2032                             "cannot be accessed on the current system.\n\n");
2033                 } else {
2034                         str = gettext("The following filesystems are "
2035                             "out of date, and can be upgraded.  After being\n"
2036                             "upgraded, these filesystems (and any 'zfs send' "
2037                             "streams generated from\n"
2038                             "subsequent snapshots) will no longer be "
2039                             "accessible by older software versions.\n\n");
2040                 }
2041
2042                 if (!cb->cb_foundone) {
2043                         (void) puts(str);
2044                         (void) printf(gettext("VER  FILESYSTEM\n"));
2045                         (void) printf(gettext("---  ------------\n"));
2046                         cb->cb_foundone = B_TRUE;
2047                 }
2048
2049                 (void) printf("%2u   %s\n", version, zfs_get_name(zhp));
2050         }
2051
2052         return (0);
2053 }
2054
2055 static int
2056 upgrade_set_callback(zfs_handle_t *zhp, void *data)
2057 {
2058         upgrade_cbdata_t *cb = data;
2059         int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
2060         int needed_spa_version;
2061         int spa_version;
2062
2063         if (zfs_spa_version(zhp, &spa_version) < 0)
2064                 return (-1);
2065
2066         needed_spa_version = zfs_spa_version_map(cb->cb_version);
2067
2068         if (needed_spa_version < 0)
2069                 return (-1);
2070
2071         if (spa_version < needed_spa_version) {
2072                 /* can't upgrade */
2073                 (void) printf(gettext("%s: can not be "
2074                     "upgraded; the pool version needs to first "
2075                     "be upgraded\nto version %d\n\n"),
2076                     zfs_get_name(zhp), needed_spa_version);
2077                 cb->cb_numfailed++;
2078                 return (0);
2079         }
2080
2081         /* upgrade */
2082         if (version < cb->cb_version) {
2083                 char verstr[16];
2084                 (void) snprintf(verstr, sizeof (verstr),
2085                     "%llu", (u_longlong_t)cb->cb_version);
2086                 if (cb->cb_lastfs[0] && !same_pool(zhp, cb->cb_lastfs)) {
2087                         /*
2088                          * If they did "zfs upgrade -a", then we could
2089                          * be doing ioctls to different pools.  We need
2090                          * to log this history once to each pool, and bypass
2091                          * the normal history logging that happens in main().
2092                          */
2093                         (void) zpool_log_history(g_zfs, history_str);
2094                         log_history = B_FALSE;
2095                 }
2096                 if (zfs_prop_set(zhp, "version", verstr) == 0)
2097                         cb->cb_numupgraded++;
2098                 else
2099                         cb->cb_numfailed++;
2100                 (void) strcpy(cb->cb_lastfs, zfs_get_name(zhp));
2101         } else if (version > cb->cb_version) {
2102                 /* can't downgrade */
2103                 (void) printf(gettext("%s: can not be downgraded; "
2104                     "it is already at version %u\n"),
2105                     zfs_get_name(zhp), version);
2106                 cb->cb_numfailed++;
2107         } else {
2108                 cb->cb_numsamegraded++;
2109         }
2110         return (0);
2111 }
2112
2113 /*
2114  * zfs upgrade
2115  * zfs upgrade -v
2116  * zfs upgrade [-r] [-V <version>] <-a | filesystem>
2117  */
2118 static int
2119 zfs_do_upgrade(int argc, char **argv)
2120 {
2121         boolean_t all = B_FALSE;
2122         boolean_t showversions = B_FALSE;
2123         int ret = 0;
2124         upgrade_cbdata_t cb = { 0 };
2125         signed char c;
2126         int flags = ZFS_ITER_ARGS_CAN_BE_PATHS;
2127
2128         /* check options */
2129         while ((c = getopt(argc, argv, "rvV:a")) != -1) {
2130                 switch (c) {
2131                 case 'r':
2132                         flags |= ZFS_ITER_RECURSE;
2133                         break;
2134                 case 'v':
2135                         showversions = B_TRUE;
2136                         break;
2137                 case 'V':
2138                         if (zfs_prop_string_to_index(ZFS_PROP_VERSION,
2139                             optarg, &cb.cb_version) != 0) {
2140                                 (void) fprintf(stderr,
2141                                     gettext("invalid version %s\n"), optarg);
2142                                 usage(B_FALSE);
2143                         }
2144                         break;
2145                 case 'a':
2146                         all = B_TRUE;
2147                         break;
2148                 case '?':
2149                 default:
2150                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2151                             optopt);
2152                         usage(B_FALSE);
2153                 }
2154         }
2155
2156         argc -= optind;
2157         argv += optind;
2158
2159         if ((!all && !argc) && ((flags & ZFS_ITER_RECURSE) | cb.cb_version))
2160                 usage(B_FALSE);
2161         if (showversions && (flags & ZFS_ITER_RECURSE || all ||
2162             cb.cb_version || argc))
2163                 usage(B_FALSE);
2164         if ((all || argc) && (showversions))
2165                 usage(B_FALSE);
2166         if (all && argc)
2167                 usage(B_FALSE);
2168
2169         if (showversions) {
2170                 /* Show info on available versions. */
2171                 (void) printf(gettext("The following filesystem versions are "
2172                     "supported:\n\n"));
2173                 (void) printf(gettext("VER  DESCRIPTION\n"));
2174                 (void) printf("---  -----------------------------------------"
2175                     "---------------\n");
2176                 (void) printf(gettext(" 1   Initial ZFS filesystem version\n"));
2177                 (void) printf(gettext(" 2   Enhanced directory entries\n"));
2178                 (void) printf(gettext(" 3   Case insensitive and filesystem "
2179                     "user identifier (FUID)\n"));
2180                 (void) printf(gettext(" 4   userquota, groupquota "
2181                     "properties\n"));
2182                 (void) printf(gettext(" 5   System attributes\n"));
2183                 (void) printf(gettext("\nFor more information on a particular "
2184                     "version, including supported releases,\n"));
2185                 (void) printf("see the ZFS Administration Guide.\n\n");
2186                 ret = 0;
2187         } else if (argc || all) {
2188                 /* Upgrade filesystems */
2189                 if (cb.cb_version == 0)
2190                         cb.cb_version = ZPL_VERSION;
2191                 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_FILESYSTEM,
2192                     NULL, NULL, 0, upgrade_set_callback, &cb);
2193                 (void) printf(gettext("%llu filesystems upgraded\n"),
2194                     (u_longlong_t)cb.cb_numupgraded);
2195                 if (cb.cb_numsamegraded) {
2196                         (void) printf(gettext("%llu filesystems already at "
2197                             "this version\n"),
2198                             (u_longlong_t)cb.cb_numsamegraded);
2199                 }
2200                 if (cb.cb_numfailed != 0)
2201                         ret = 1;
2202         } else {
2203                 /* List old-version filesystems */
2204                 boolean_t found;
2205                 (void) printf(gettext("This system is currently running "
2206                     "ZFS filesystem version %llu.\n\n"), ZPL_VERSION);
2207
2208                 flags |= ZFS_ITER_RECURSE;
2209                 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
2210                     NULL, NULL, 0, upgrade_list_callback, &cb);
2211
2212                 found = cb.cb_foundone;
2213                 cb.cb_foundone = B_FALSE;
2214                 cb.cb_newer = B_TRUE;
2215
2216                 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
2217                     NULL, NULL, 0, upgrade_list_callback, &cb);
2218
2219                 if (!cb.cb_foundone && !found) {
2220                         (void) printf(gettext("All filesystems are "
2221                             "formatted with the current version.\n"));
2222                 }
2223         }
2224
2225         return (ret);
2226 }
2227
2228 /*
2229  * zfs userspace [-Hinp] [-o field[,...]] [-s field [-s field]...]
2230  *               [-S field [-S field]...] [-t type[,...]] filesystem | snapshot
2231  * zfs groupspace [-Hinp] [-o field[,...]] [-s field [-s field]...]
2232  *                [-S field [-S field]...] [-t type[,...]] filesystem | snapshot
2233  *
2234  *      -H      Scripted mode; elide headers and separate columns by tabs.
2235  *      -i      Translate SID to POSIX ID.
2236  *      -n      Print numeric ID instead of user/group name.
2237  *      -o      Control which fields to display.
2238  *      -p      Use exact (parsable) numeric output.
2239  *      -s      Specify sort columns, descending order.
2240  *      -S      Specify sort columns, ascending order.
2241  *      -t      Control which object types to display.
2242  *
2243  *      Displays space consumed by, and quotas on, each user in the specified
2244  *      filesystem or snapshot.
2245  */
2246
2247 /* us_field_types, us_field_hdr and us_field_names should be kept in sync */
2248 enum us_field_types {
2249         USFIELD_TYPE,
2250         USFIELD_NAME,
2251         USFIELD_USED,
2252         USFIELD_QUOTA,
2253         USFIELD_OBJUSED,
2254         USFIELD_OBJQUOTA
2255 };
2256 static char *us_field_hdr[] = { "TYPE", "NAME", "USED", "QUOTA",
2257                                     "OBJUSED", "OBJQUOTA" };
2258 static char *us_field_names[] = { "type", "name", "used", "quota",
2259                                     "objused", "objquota" };
2260 #define USFIELD_LAST    (sizeof (us_field_names) / sizeof (char *))
2261
2262 #define USTYPE_PSX_GRP  (1 << 0)
2263 #define USTYPE_PSX_USR  (1 << 1)
2264 #define USTYPE_SMB_GRP  (1 << 2)
2265 #define USTYPE_SMB_USR  (1 << 3)
2266 #define USTYPE_ALL      \
2267         (USTYPE_PSX_GRP | USTYPE_PSX_USR | USTYPE_SMB_GRP | USTYPE_SMB_USR)
2268
2269 static int us_type_bits[] = {
2270         USTYPE_PSX_GRP,
2271         USTYPE_PSX_USR,
2272         USTYPE_SMB_GRP,
2273         USTYPE_SMB_USR,
2274         USTYPE_ALL
2275 };
2276 static char *us_type_names[] = { "posixgroup", "posixuser", "smbgroup",
2277         "smbuser", "all" };
2278
2279 typedef struct us_node {
2280         nvlist_t        *usn_nvl;
2281         uu_avl_node_t   usn_avlnode;
2282         uu_list_node_t  usn_listnode;
2283 } us_node_t;
2284
2285 typedef struct us_cbdata {
2286         nvlist_t        **cb_nvlp;
2287         uu_avl_pool_t   *cb_avl_pool;
2288         uu_avl_t        *cb_avl;
2289         boolean_t       cb_numname;
2290         boolean_t       cb_nicenum;
2291         boolean_t       cb_sid2posix;
2292         zfs_userquota_prop_t cb_prop;
2293         zfs_sort_column_t *cb_sortcol;
2294         size_t          cb_width[USFIELD_LAST];
2295 } us_cbdata_t;
2296
2297 static boolean_t us_populated = B_FALSE;
2298
2299 typedef struct {
2300         zfs_sort_column_t *si_sortcol;
2301         boolean_t       si_numname;
2302 } us_sort_info_t;
2303
2304 static int
2305 us_field_index(char *field)
2306 {
2307         int i;
2308
2309         for (i = 0; i < USFIELD_LAST; i++) {
2310                 if (strcmp(field, us_field_names[i]) == 0)
2311                         return (i);
2312         }
2313
2314         return (-1);
2315 }
2316
2317 static int
2318 us_compare(const void *larg, const void *rarg, void *unused)
2319 {
2320         const us_node_t *l = larg;
2321         const us_node_t *r = rarg;
2322         us_sort_info_t *si = (us_sort_info_t *)unused;
2323         zfs_sort_column_t *sortcol = si->si_sortcol;
2324         boolean_t numname = si->si_numname;
2325         nvlist_t *lnvl = l->usn_nvl;
2326         nvlist_t *rnvl = r->usn_nvl;
2327         int rc = 0;
2328         boolean_t lvb, rvb;
2329
2330         for (; sortcol != NULL; sortcol = sortcol->sc_next) {
2331                 char *lvstr = "";
2332                 char *rvstr = "";
2333                 uint32_t lv32 = 0;
2334                 uint32_t rv32 = 0;
2335                 uint64_t lv64 = 0;
2336                 uint64_t rv64 = 0;
2337                 zfs_prop_t prop = sortcol->sc_prop;
2338                 const char *propname = NULL;
2339                 boolean_t reverse = sortcol->sc_reverse;
2340
2341                 switch (prop) {
2342                 case ZFS_PROP_TYPE:
2343                         propname = "type";
2344                         (void) nvlist_lookup_uint32(lnvl, propname, &lv32);
2345                         (void) nvlist_lookup_uint32(rnvl, propname, &rv32);
2346                         if (rv32 != lv32)
2347                                 rc = (rv32 < lv32) ? 1 : -1;
2348                         break;
2349                 case ZFS_PROP_NAME:
2350                         propname = "name";
2351                         if (numname) {
2352 compare_nums:
2353                                 (void) nvlist_lookup_uint64(lnvl, propname,
2354                                     &lv64);
2355                                 (void) nvlist_lookup_uint64(rnvl, propname,
2356                                     &rv64);
2357                                 if (rv64 != lv64)
2358                                         rc = (rv64 < lv64) ? 1 : -1;
2359                         } else {
2360                                 if ((nvlist_lookup_string(lnvl, propname,
2361                                     &lvstr) == ENOENT) ||
2362                                     (nvlist_lookup_string(rnvl, propname,
2363                                     &rvstr) == ENOENT)) {
2364                                         goto compare_nums;
2365                                 }
2366                                 rc = strcmp(lvstr, rvstr);
2367                         }
2368                         break;
2369                 case ZFS_PROP_USED:
2370                 case ZFS_PROP_QUOTA:
2371                         if (!us_populated)
2372                                 break;
2373                         if (prop == ZFS_PROP_USED)
2374                                 propname = "used";
2375                         else
2376                                 propname = "quota";
2377                         (void) nvlist_lookup_uint64(lnvl, propname, &lv64);
2378                         (void) nvlist_lookup_uint64(rnvl, propname, &rv64);
2379                         if (rv64 != lv64)
2380                                 rc = (rv64 < lv64) ? 1 : -1;
2381                         break;
2382
2383                 default:
2384                         break;
2385                 }
2386
2387                 if (rc != 0) {
2388                         if (rc < 0)
2389                                 return (reverse ? 1 : -1);
2390                         else
2391                                 return (reverse ? -1 : 1);
2392                 }
2393         }
2394
2395         /*
2396          * If entries still seem to be the same, check if they are of the same
2397          * type (smbentity is added only if we are doing SID to POSIX ID
2398          * translation where we can have duplicate type/name combinations).
2399          */
2400         if (nvlist_lookup_boolean_value(lnvl, "smbentity", &lvb) == 0 &&
2401             nvlist_lookup_boolean_value(rnvl, "smbentity", &rvb) == 0 &&
2402             lvb != rvb)
2403                 return (lvb < rvb ? -1 : 1);
2404
2405         return (0);
2406 }
2407
2408 static boolean_t
2409 zfs_prop_is_user(unsigned p)
2410 {
2411         return (p == ZFS_PROP_USERUSED || p == ZFS_PROP_USERQUOTA ||
2412             p == ZFS_PROP_USEROBJUSED || p == ZFS_PROP_USEROBJQUOTA);
2413 }
2414
2415 static boolean_t
2416 zfs_prop_is_group(unsigned p)
2417 {
2418         return (p == ZFS_PROP_GROUPUSED || p == ZFS_PROP_GROUPQUOTA ||
2419             p == ZFS_PROP_GROUPOBJUSED || p == ZFS_PROP_GROUPOBJQUOTA);
2420 }
2421
2422 static inline const char *
2423 us_type2str(unsigned field_type)
2424 {
2425         switch (field_type) {
2426         case USTYPE_PSX_USR:
2427                 return ("POSIX User");
2428         case USTYPE_PSX_GRP:
2429                 return ("POSIX Group");
2430         case USTYPE_SMB_USR:
2431                 return ("SMB User");
2432         case USTYPE_SMB_GRP:
2433                 return ("SMB Group");
2434         default:
2435                 return ("Undefined");
2436         }
2437 }
2438
2439 static int
2440 userspace_cb(void *arg, const char *domain, uid_t rid, uint64_t space)
2441 {
2442         us_cbdata_t *cb = (us_cbdata_t *)arg;
2443         zfs_userquota_prop_t prop = cb->cb_prop;
2444         char *name = NULL;
2445         char *propname;
2446         char sizebuf[32];
2447         us_node_t *node;
2448         uu_avl_pool_t *avl_pool = cb->cb_avl_pool;
2449         uu_avl_t *avl = cb->cb_avl;
2450         uu_avl_index_t idx;
2451         nvlist_t *props;
2452         us_node_t *n;
2453         zfs_sort_column_t *sortcol = cb->cb_sortcol;
2454         unsigned type = 0;
2455         const char *typestr;
2456         size_t namelen;
2457         size_t typelen;
2458         size_t sizelen;
2459         int typeidx, nameidx, sizeidx;
2460         us_sort_info_t sortinfo = { sortcol, cb->cb_numname };
2461         boolean_t smbentity = B_FALSE;
2462
2463         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
2464                 nomem();
2465         node = safe_malloc(sizeof (us_node_t));
2466         uu_avl_node_init(node, &node->usn_avlnode, avl_pool);
2467         node->usn_nvl = props;
2468
2469         if (domain != NULL && domain[0] != '\0') {
2470 #ifdef HAVE_IDMAP
2471                 /* SMB */
2472                 char sid[MAXNAMELEN + 32];
2473                 uid_t id;
2474                 uint64_t classes;
2475                 int err;
2476                 directory_error_t e;
2477
2478                 smbentity = B_TRUE;
2479
2480                 (void) snprintf(sid, sizeof (sid), "%s-%u", domain, rid);
2481
2482                 if (prop == ZFS_PROP_GROUPUSED || prop == ZFS_PROP_GROUPQUOTA) {
2483                         type = USTYPE_SMB_GRP;
2484                         err = sid_to_id(sid, B_FALSE, &id);
2485                 } else {
2486                         type = USTYPE_SMB_USR;
2487                         err = sid_to_id(sid, B_TRUE, &id);
2488                 }
2489
2490                 if (err == 0) {
2491                         rid = id;
2492                         if (!cb->cb_sid2posix) {
2493                                 e = directory_name_from_sid(NULL, sid, &name,
2494                                     &classes);
2495                                 if (e != NULL)
2496                                         directory_error_free(e);
2497                                 if (name == NULL)
2498                                         name = sid;
2499                         }
2500                 }
2501 #else
2502                 nvlist_free(props);
2503                 free(node);
2504
2505                 return (-1);
2506 #endif /* HAVE_IDMAP */
2507         }
2508
2509         if (cb->cb_sid2posix || domain == NULL || domain[0] == '\0') {
2510                 /* POSIX or -i */
2511                 if (zfs_prop_is_group(prop)) {
2512                         type = USTYPE_PSX_GRP;
2513                         if (!cb->cb_numname) {
2514                                 struct group *g;
2515
2516                                 if ((g = getgrgid(rid)) != NULL)
2517                                         name = g->gr_name;
2518                         }
2519                 } else {
2520                         type = USTYPE_PSX_USR;
2521                         if (!cb->cb_numname) {
2522                                 struct passwd *p;
2523
2524                                 if ((p = getpwuid(rid)) != NULL)
2525                                         name = p->pw_name;
2526                         }
2527                 }
2528         }
2529
2530         /*
2531          * Make sure that the type/name combination is unique when doing
2532          * SID to POSIX ID translation (hence changing the type from SMB to
2533          * POSIX).
2534          */
2535         if (cb->cb_sid2posix &&
2536             nvlist_add_boolean_value(props, "smbentity", smbentity) != 0)
2537                 nomem();
2538
2539         /* Calculate/update width of TYPE field */
2540         typestr = us_type2str(type);
2541         typelen = strlen(gettext(typestr));
2542         typeidx = us_field_index("type");
2543         if (typelen > cb->cb_width[typeidx])
2544                 cb->cb_width[typeidx] = typelen;
2545         if (nvlist_add_uint32(props, "type", type) != 0)
2546                 nomem();
2547
2548         /* Calculate/update width of NAME field */
2549         if ((cb->cb_numname && cb->cb_sid2posix) || name == NULL) {
2550                 if (nvlist_add_uint64(props, "name", rid) != 0)
2551                         nomem();
2552                 namelen = snprintf(NULL, 0, "%u", rid);
2553         } else {
2554                 if (nvlist_add_string(props, "name", name) != 0)
2555                         nomem();
2556                 namelen = strlen(name);
2557         }
2558         nameidx = us_field_index("name");
2559         if (nameidx >= 0 && namelen > cb->cb_width[nameidx])
2560                 cb->cb_width[nameidx] = namelen;
2561
2562         /*
2563          * Check if this type/name combination is in the list and update it;
2564          * otherwise add new node to the list.
2565          */
2566         if ((n = uu_avl_find(avl, node, &sortinfo, &idx)) == NULL) {
2567                 uu_avl_insert(avl, node, idx);
2568         } else {
2569                 nvlist_free(props);
2570                 free(node);
2571                 node = n;
2572                 props = node->usn_nvl;
2573         }
2574
2575         /* Calculate/update width of USED/QUOTA fields */
2576         if (cb->cb_nicenum) {
2577                 if (prop == ZFS_PROP_USERUSED || prop == ZFS_PROP_GROUPUSED ||
2578                     prop == ZFS_PROP_USERQUOTA || prop == ZFS_PROP_GROUPQUOTA) {
2579                         zfs_nicebytes(space, sizebuf, sizeof (sizebuf));
2580                 } else {
2581                         zfs_nicenum(space, sizebuf, sizeof (sizebuf));
2582                 }
2583         } else {
2584                 (void) snprintf(sizebuf, sizeof (sizebuf), "%llu",
2585                     (u_longlong_t)space);
2586         }
2587         sizelen = strlen(sizebuf);
2588         if (prop == ZFS_PROP_USERUSED || prop == ZFS_PROP_GROUPUSED) {
2589                 propname = "used";
2590                 if (!nvlist_exists(props, "quota"))
2591                         (void) nvlist_add_uint64(props, "quota", 0);
2592         } else if (prop == ZFS_PROP_USERQUOTA || prop == ZFS_PROP_GROUPQUOTA) {
2593                 propname = "quota";
2594                 if (!nvlist_exists(props, "used"))
2595                         (void) nvlist_add_uint64(props, "used", 0);
2596         } else if (prop == ZFS_PROP_USEROBJUSED ||
2597             prop == ZFS_PROP_GROUPOBJUSED) {
2598                 propname = "objused";
2599                 if (!nvlist_exists(props, "objquota"))
2600                         (void) nvlist_add_uint64(props, "objquota", 0);
2601         } else if (prop == ZFS_PROP_USEROBJQUOTA ||
2602             prop == ZFS_PROP_GROUPOBJQUOTA) {
2603                 propname = "objquota";
2604                 if (!nvlist_exists(props, "objused"))
2605                         (void) nvlist_add_uint64(props, "objused", 0);
2606         } else {
2607                 return (-1);
2608         }
2609         sizeidx = us_field_index(propname);
2610         if (sizeidx >= 0 && sizelen > cb->cb_width[sizeidx])
2611                 cb->cb_width[sizeidx] = sizelen;
2612
2613         if (nvlist_add_uint64(props, propname, space) != 0)
2614                 nomem();
2615
2616         return (0);
2617 }
2618
2619 static void
2620 print_us_node(boolean_t scripted, boolean_t parsable, int *fields, int types,
2621     size_t *width, us_node_t *node)
2622 {
2623         nvlist_t *nvl = node->usn_nvl;
2624         char valstr[MAXNAMELEN];
2625         boolean_t first = B_TRUE;
2626         int cfield = 0;
2627         int field;
2628         uint32_t ustype;
2629
2630         /* Check type */
2631         (void) nvlist_lookup_uint32(nvl, "type", &ustype);
2632         if (!(ustype & types))
2633                 return;
2634
2635         while ((field = fields[cfield]) != USFIELD_LAST) {
2636                 nvpair_t *nvp = NULL;
2637                 data_type_t type;
2638                 uint32_t val32;
2639                 uint64_t val64;
2640                 char *strval = "-";
2641
2642                 while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
2643                         if (strcmp(nvpair_name(nvp),
2644                             us_field_names[field]) == 0)
2645                                 break;
2646                 }
2647
2648                 type = nvp == NULL ? DATA_TYPE_UNKNOWN : nvpair_type(nvp);
2649                 switch (type) {
2650                 case DATA_TYPE_UINT32:
2651                         (void) nvpair_value_uint32(nvp, &val32);
2652                         break;
2653                 case DATA_TYPE_UINT64:
2654                         (void) nvpair_value_uint64(nvp, &val64);
2655                         break;
2656                 case DATA_TYPE_STRING:
2657                         (void) nvpair_value_string(nvp, &strval);
2658                         break;
2659                 case DATA_TYPE_UNKNOWN:
2660                         break;
2661                 default:
2662                         (void) fprintf(stderr, "invalid data type\n");
2663                 }
2664
2665                 switch (field) {
2666                 case USFIELD_TYPE:
2667                         if (type == DATA_TYPE_UINT32)
2668                                 strval = (char *)us_type2str(val32);
2669                         break;
2670                 case USFIELD_NAME:
2671                         if (type == DATA_TYPE_UINT64) {
2672                                 (void) sprintf(valstr, "%llu",
2673                                     (u_longlong_t)val64);
2674                                 strval = valstr;
2675                         }
2676                         break;
2677                 case USFIELD_USED:
2678                 case USFIELD_QUOTA:
2679                         if (type == DATA_TYPE_UINT64) {
2680                                 if (parsable) {
2681                                         (void) sprintf(valstr, "%llu",
2682                                             (u_longlong_t)val64);
2683                                         strval = valstr;
2684                                 } else if (field == USFIELD_QUOTA &&
2685                                     val64 == 0) {
2686                                         strval = "none";
2687                                 } else {
2688                                         zfs_nicebytes(val64, valstr,
2689                                             sizeof (valstr));
2690                                         strval = valstr;
2691                                 }
2692                         }
2693                         break;
2694                 case USFIELD_OBJUSED:
2695                 case USFIELD_OBJQUOTA:
2696                         if (type == DATA_TYPE_UINT64) {
2697                                 if (parsable) {
2698                                         (void) sprintf(valstr, "%llu",
2699                                             (u_longlong_t)val64);
2700                                         strval = valstr;
2701                                 } else if (field == USFIELD_OBJQUOTA &&
2702                                     val64 == 0) {
2703                                         strval = "none";
2704                                 } else {
2705                                         zfs_nicenum(val64, valstr,
2706                                             sizeof (valstr));
2707                                         strval = valstr;
2708                                 }
2709                         }
2710                         break;
2711                 }
2712
2713                 if (!first) {
2714                         if (scripted)
2715                                 (void) printf("\t");
2716                         else
2717                                 (void) printf("  ");
2718                 }
2719                 if (scripted)
2720                         (void) printf("%s", strval);
2721                 else if (field == USFIELD_TYPE || field == USFIELD_NAME)
2722                         (void) printf("%-*s", (int)width[field], strval);
2723                 else
2724                         (void) printf("%*s", (int)width[field], strval);
2725
2726                 first = B_FALSE;
2727                 cfield++;
2728         }
2729
2730         (void) printf("\n");
2731 }
2732
2733 static void
2734 print_us(boolean_t scripted, boolean_t parsable, int *fields, int types,
2735     size_t *width, boolean_t rmnode, uu_avl_t *avl)
2736 {
2737         us_node_t *node;
2738         const char *col;
2739         int cfield = 0;
2740         int field;
2741
2742         if (!scripted) {
2743                 boolean_t first = B_TRUE;
2744
2745                 while ((field = fields[cfield]) != USFIELD_LAST) {
2746                         col = gettext(us_field_hdr[field]);
2747                         if (field == USFIELD_TYPE || field == USFIELD_NAME) {
2748                                 (void) printf(first ? "%-*s" : "  %-*s",
2749                                     (int)width[field], col);
2750                         } else {
2751                                 (void) printf(first ? "%*s" : "  %*s",
2752                                     (int)width[field], col);
2753                         }
2754                         first = B_FALSE;
2755                         cfield++;
2756                 }
2757                 (void) printf("\n");
2758         }
2759
2760         for (node = uu_avl_first(avl); node; node = uu_avl_next(avl, node)) {
2761                 print_us_node(scripted, parsable, fields, types, width, node);
2762                 if (rmnode)
2763                         nvlist_free(node->usn_nvl);
2764         }
2765 }
2766
2767 static int
2768 zfs_do_userspace(int argc, char **argv)
2769 {
2770         zfs_handle_t *zhp;
2771         zfs_userquota_prop_t p;
2772         uu_avl_pool_t *avl_pool;
2773         uu_avl_t *avl_tree;
2774         uu_avl_walk_t *walk;
2775         char *delim;
2776         char deffields[] = "type,name,used,quota,objused,objquota";
2777         char *ofield = NULL;
2778         char *tfield = NULL;
2779         int cfield = 0;
2780         int fields[256];
2781         int i;
2782         boolean_t scripted = B_FALSE;
2783         boolean_t prtnum = B_FALSE;
2784         boolean_t parsable = B_FALSE;
2785         boolean_t sid2posix = B_FALSE;
2786         int ret = 0;
2787         int c;
2788         zfs_sort_column_t *sortcol = NULL;
2789         int types = USTYPE_PSX_USR | USTYPE_SMB_USR;
2790         us_cbdata_t cb;
2791         us_node_t *node;
2792         us_node_t *rmnode;
2793         uu_list_pool_t *listpool;
2794         uu_list_t *list;
2795         uu_avl_index_t idx = 0;
2796         uu_list_index_t idx2 = 0;
2797
2798         if (argc < 2)
2799                 usage(B_FALSE);
2800
2801         if (strcmp(argv[0], "groupspace") == 0)
2802                 /* Toggle default group types */
2803                 types = USTYPE_PSX_GRP | USTYPE_SMB_GRP;
2804
2805         while ((c = getopt(argc, argv, "nHpo:s:S:t:i")) != -1) {
2806                 switch (c) {
2807                 case 'n':
2808                         prtnum = B_TRUE;
2809                         break;
2810                 case 'H':
2811                         scripted = B_TRUE;
2812                         break;
2813                 case 'p':
2814                         parsable = B_TRUE;
2815                         break;
2816                 case 'o':
2817                         ofield = optarg;
2818                         break;
2819                 case 's':
2820                 case 'S':
2821                         if (zfs_add_sort_column(&sortcol, optarg,
2822                             c == 's' ? B_FALSE : B_TRUE) != 0) {
2823                                 (void) fprintf(stderr,
2824                                     gettext("invalid field '%s'\n"), optarg);
2825                                 usage(B_FALSE);
2826                         }
2827                         break;
2828                 case 't':
2829                         tfield = optarg;
2830                         break;
2831                 case 'i':
2832                         sid2posix = B_TRUE;
2833                         break;
2834                 case ':':
2835                         (void) fprintf(stderr, gettext("missing argument for "
2836                             "'%c' option\n"), optopt);
2837                         usage(B_FALSE);
2838                         break;
2839                 case '?':
2840                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2841                             optopt);
2842                         usage(B_FALSE);
2843                 }
2844         }
2845
2846         argc -= optind;
2847         argv += optind;
2848
2849         if (argc < 1) {
2850                 (void) fprintf(stderr, gettext("missing dataset name\n"));
2851                 usage(B_FALSE);
2852         }
2853         if (argc > 1) {
2854                 (void) fprintf(stderr, gettext("too many arguments\n"));
2855                 usage(B_FALSE);
2856         }
2857
2858         /* Use default output fields if not specified using -o */
2859         if (ofield == NULL)
2860                 ofield = deffields;
2861         do {
2862                 if ((delim = strchr(ofield, ',')) != NULL)
2863                         *delim = '\0';
2864                 if ((fields[cfield++] = us_field_index(ofield)) == -1) {
2865                         (void) fprintf(stderr, gettext("invalid type '%s' "
2866                             "for -o option\n"), ofield);
2867                         return (-1);
2868                 }
2869                 if (delim != NULL)
2870                         ofield = delim + 1;
2871         } while (delim != NULL);
2872         fields[cfield] = USFIELD_LAST;
2873
2874         /* Override output types (-t option) */
2875         if (tfield != NULL) {
2876                 types = 0;
2877
2878                 do {
2879                         boolean_t found = B_FALSE;
2880
2881                         if ((delim = strchr(tfield, ',')) != NULL)
2882                                 *delim = '\0';
2883                         for (i = 0; i < sizeof (us_type_bits) / sizeof (int);
2884                             i++) {
2885                                 if (strcmp(tfield, us_type_names[i]) == 0) {
2886                                         found = B_TRUE;
2887                                         types |= us_type_bits[i];
2888                                         break;
2889                                 }
2890                         }
2891                         if (!found) {
2892                                 (void) fprintf(stderr, gettext("invalid type "
2893                                     "'%s' for -t option\n"), tfield);
2894                                 return (-1);
2895                         }
2896                         if (delim != NULL)
2897                                 tfield = delim + 1;
2898                 } while (delim != NULL);
2899         }
2900
2901         if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL)
2902                 return (1);
2903
2904         if ((avl_pool = uu_avl_pool_create("us_avl_pool", sizeof (us_node_t),
2905             offsetof(us_node_t, usn_avlnode), us_compare, UU_DEFAULT)) == NULL)
2906                 nomem();
2907         if ((avl_tree = uu_avl_create(avl_pool, NULL, UU_DEFAULT)) == NULL)
2908                 nomem();
2909
2910         /* Always add default sorting columns */
2911         (void) zfs_add_sort_column(&sortcol, "type", B_FALSE);
2912         (void) zfs_add_sort_column(&sortcol, "name", B_FALSE);
2913
2914         cb.cb_sortcol = sortcol;
2915         cb.cb_numname = prtnum;
2916         cb.cb_nicenum = !parsable;
2917         cb.cb_avl_pool = avl_pool;
2918         cb.cb_avl = avl_tree;
2919         cb.cb_sid2posix = sid2posix;
2920
2921         for (i = 0; i < USFIELD_LAST; i++)
2922                 cb.cb_width[i] = strlen(gettext(us_field_hdr[i]));
2923
2924         for (p = 0; p < ZFS_NUM_USERQUOTA_PROPS; p++) {
2925                 if ((zfs_prop_is_user(p) &&
2926                     !(types & (USTYPE_PSX_USR | USTYPE_SMB_USR))) ||
2927                     (zfs_prop_is_group(p) &&
2928                     !(types & (USTYPE_PSX_GRP | USTYPE_SMB_GRP))))
2929                         continue;
2930
2931                 cb.cb_prop = p;
2932                 if ((ret = zfs_userspace(zhp, p, userspace_cb, &cb)) != 0)
2933                         return (ret);
2934         }
2935
2936         /* Sort the list */
2937         if ((node = uu_avl_first(avl_tree)) == NULL)
2938                 return (0);
2939
2940         us_populated = B_TRUE;
2941
2942         listpool = uu_list_pool_create("tmplist", sizeof (us_node_t),
2943             offsetof(us_node_t, usn_listnode), NULL, UU_DEFAULT);
2944         list = uu_list_create(listpool, NULL, UU_DEFAULT);
2945         uu_list_node_init(node, &node->usn_listnode, listpool);
2946
2947         while (node != NULL) {
2948                 rmnode = node;
2949                 node = uu_avl_next(avl_tree, node);
2950                 uu_avl_remove(avl_tree, rmnode);
2951                 if (uu_list_find(list, rmnode, NULL, &idx2) == NULL)
2952                         uu_list_insert(list, rmnode, idx2);
2953         }
2954
2955         for (node = uu_list_first(list); node != NULL;
2956             node = uu_list_next(list, node)) {
2957                 us_sort_info_t sortinfo = { sortcol, cb.cb_numname };
2958
2959                 if (uu_avl_find(avl_tree, node, &sortinfo, &idx) == NULL)
2960                         uu_avl_insert(avl_tree, node, idx);
2961         }
2962
2963         uu_list_destroy(list);
2964         uu_list_pool_destroy(listpool);
2965
2966         /* Print and free node nvlist memory */
2967         print_us(scripted, parsable, fields, types, cb.cb_width, B_TRUE,
2968             cb.cb_avl);
2969
2970         zfs_free_sort_columns(sortcol);
2971
2972         /* Clean up the AVL tree */
2973         if ((walk = uu_avl_walk_start(cb.cb_avl, UU_WALK_ROBUST)) == NULL)
2974                 nomem();
2975
2976         while ((node = uu_avl_walk_next(walk)) != NULL) {
2977                 uu_avl_remove(cb.cb_avl, node);
2978                 free(node);
2979         }
2980
2981         uu_avl_walk_end(walk);
2982         uu_avl_destroy(avl_tree);
2983         uu_avl_pool_destroy(avl_pool);
2984
2985         return (ret);
2986 }
2987
2988 /*
2989  * list [-Hp][-r|-d max] [-o property[,...]] [-s property] ... [-S property]
2990  *      [-t type[,...]] [filesystem|volume|snapshot] ...
2991  *
2992  *      -H      Scripted mode; elide headers and separate columns by tabs
2993  *      -p      Display values in parsable (literal) format.
2994  *      -r      Recurse over all children
2995  *      -d      Limit recursion by depth.
2996  *      -o      Control which fields to display.
2997  *      -s      Specify sort columns, descending order.
2998  *      -S      Specify sort columns, ascending order.
2999  *      -t      Control which object types to display.
3000  *
3001  * When given no arguments, list all filesystems in the system.
3002  * Otherwise, list the specified datasets, optionally recursing down them if
3003  * '-r' is specified.
3004  */
3005 typedef struct list_cbdata {
3006         boolean_t       cb_first;
3007         boolean_t       cb_literal;
3008         boolean_t       cb_scripted;
3009         zprop_list_t    *cb_proplist;
3010 } list_cbdata_t;
3011
3012 /*
3013  * Given a list of columns to display, output appropriate headers for each one.
3014  */
3015 static void
3016 print_header(list_cbdata_t *cb)
3017 {
3018         zprop_list_t *pl = cb->cb_proplist;
3019         char headerbuf[ZFS_MAXPROPLEN];
3020         const char *header;
3021         int i;
3022         boolean_t first = B_TRUE;
3023         boolean_t right_justify;
3024
3025         for (; pl != NULL; pl = pl->pl_next) {
3026                 if (!first) {
3027                         (void) printf("  ");
3028                 } else {
3029                         first = B_FALSE;
3030                 }
3031
3032                 right_justify = B_FALSE;
3033                 if (pl->pl_prop != ZPROP_INVAL) {
3034                         header = zfs_prop_column_name(pl->pl_prop);
3035                         right_justify = zfs_prop_align_right(pl->pl_prop);
3036                 } else {
3037                         for (i = 0; pl->pl_user_prop[i] != '\0'; i++)
3038                                 headerbuf[i] = toupper(pl->pl_user_prop[i]);
3039                         headerbuf[i] = '\0';
3040                         header = headerbuf;
3041                 }
3042
3043                 if (pl->pl_next == NULL && !right_justify)
3044                         (void) printf("%s", header);
3045                 else if (right_justify)
3046                         (void) printf("%*s", (int)pl->pl_width, header);
3047                 else
3048                         (void) printf("%-*s", (int)pl->pl_width, header);
3049         }
3050
3051         (void) printf("\n");
3052 }
3053
3054 /*
3055  * Given a dataset and a list of fields, print out all the properties according
3056  * to the described layout.
3057  */
3058 static void
3059 print_dataset(zfs_handle_t *zhp, list_cbdata_t *cb)
3060 {
3061         zprop_list_t *pl = cb->cb_proplist;
3062         boolean_t first = B_TRUE;
3063         char property[ZFS_MAXPROPLEN];
3064         nvlist_t *userprops = zfs_get_user_props(zhp);
3065         nvlist_t *propval;
3066         char *propstr;
3067         boolean_t right_justify;
3068
3069         for (; pl != NULL; pl = pl->pl_next) {
3070                 if (!first) {
3071                         if (cb->cb_scripted)
3072                                 (void) printf("\t");
3073                         else
3074                                 (void) printf("  ");
3075                 } else {
3076                         first = B_FALSE;
3077                 }
3078
3079                 if (pl->pl_prop == ZFS_PROP_NAME) {
3080                         (void) strlcpy(property, zfs_get_name(zhp),
3081                             sizeof (property));
3082                         propstr = property;
3083                         right_justify = zfs_prop_align_right(pl->pl_prop);
3084                 } else if (pl->pl_prop != ZPROP_INVAL) {
3085                         if (zfs_prop_get(zhp, pl->pl_prop, property,
3086                             sizeof (property), NULL, NULL, 0,
3087                             cb->cb_literal) != 0)
3088                                 propstr = "-";
3089                         else
3090                                 propstr = property;
3091                         right_justify = zfs_prop_align_right(pl->pl_prop);
3092                 } else if (zfs_prop_userquota(pl->pl_user_prop)) {
3093                         if (zfs_prop_get_userquota(zhp, pl->pl_user_prop,
3094                             property, sizeof (property), cb->cb_literal) != 0)
3095                                 propstr = "-";
3096                         else
3097                                 propstr = property;
3098                         right_justify = B_TRUE;
3099                 } else if (zfs_prop_written(pl->pl_user_prop)) {
3100                         if (zfs_prop_get_written(zhp, pl->pl_user_prop,
3101                             property, sizeof (property), cb->cb_literal) != 0)
3102                                 propstr = "-";
3103                         else
3104                                 propstr = property;
3105                         right_justify = B_TRUE;
3106                 } else {
3107                         if (nvlist_lookup_nvlist(userprops,
3108                             pl->pl_user_prop, &propval) != 0)
3109                                 propstr = "-";
3110                         else
3111                                 verify(nvlist_lookup_string(propval,
3112                                     ZPROP_VALUE, &propstr) == 0);
3113                         right_justify = B_FALSE;
3114                 }
3115
3116                 /*
3117                  * If this is being called in scripted mode, or if this is the
3118                  * last column and it is left-justified, don't include a width
3119                  * format specifier.
3120                  */
3121                 if (cb->cb_scripted || (pl->pl_next == NULL && !right_justify))
3122                         (void) printf("%s", propstr);
3123                 else if (right_justify)
3124                         (void) printf("%*s", (int)pl->pl_width, propstr);
3125                 else
3126                         (void) printf("%-*s", (int)pl->pl_width, propstr);
3127         }
3128
3129         (void) printf("\n");
3130 }
3131
3132 /*
3133  * Generic callback function to list a dataset or snapshot.
3134  */
3135 static int
3136 list_callback(zfs_handle_t *zhp, void *data)
3137 {
3138         list_cbdata_t *cbp = data;
3139
3140         if (cbp->cb_first) {
3141                 if (!cbp->cb_scripted)
3142                         print_header(cbp);
3143                 cbp->cb_first = B_FALSE;
3144         }
3145
3146         print_dataset(zhp, cbp);
3147
3148         return (0);
3149 }
3150
3151 static int
3152 zfs_do_list(int argc, char **argv)
3153 {
3154         int c;
3155         static char default_fields[] =
3156             "name,used,available,referenced,mountpoint";
3157         int types = ZFS_TYPE_DATASET;
3158         boolean_t types_specified = B_FALSE;
3159         char *fields = NULL;
3160         list_cbdata_t cb = { 0 };
3161         char *value;
3162         int limit = 0;
3163         int ret = 0;
3164         zfs_sort_column_t *sortcol = NULL;
3165         int flags = ZFS_ITER_PROP_LISTSNAPS | ZFS_ITER_ARGS_CAN_BE_PATHS;
3166
3167         /* check options */
3168         while ((c = getopt(argc, argv, "HS:d:o:prs:t:")) != -1) {
3169                 switch (c) {
3170                 case 'o':
3171                         fields = optarg;
3172                         break;
3173                 case 'p':
3174                         cb.cb_literal = B_TRUE;
3175                         flags |= ZFS_ITER_LITERAL_PROPS;
3176                         break;
3177                 case 'd':
3178                         limit = parse_depth(optarg, &flags);
3179                         break;
3180                 case 'r':
3181                         flags |= ZFS_ITER_RECURSE;
3182                         break;
3183                 case 'H':
3184                         cb.cb_scripted = B_TRUE;
3185                         break;
3186                 case 's':
3187                         if (zfs_add_sort_column(&sortcol, optarg,
3188                             B_FALSE) != 0) {
3189                                 (void) fprintf(stderr,
3190                                     gettext("invalid property '%s'\n"), optarg);
3191                                 usage(B_FALSE);
3192                         }
3193                         break;
3194                 case 'S':
3195                         if (zfs_add_sort_column(&sortcol, optarg,
3196                             B_TRUE) != 0) {
3197                                 (void) fprintf(stderr,
3198                                     gettext("invalid property '%s'\n"), optarg);
3199                                 usage(B_FALSE);
3200                         }
3201                         break;
3202                 case 't':
3203                         types = 0;
3204                         types_specified = B_TRUE;
3205                         flags &= ~ZFS_ITER_PROP_LISTSNAPS;
3206                         while (*optarg != '\0') {
3207                                 static char *type_subopts[] = { "filesystem",
3208                                     "volume", "snapshot", "snap", "bookmark",
3209                                     "all", NULL };
3210
3211                                 switch (getsubopt(&optarg, type_subopts,
3212                                     &value)) {
3213                                 case 0:
3214                                         types |= ZFS_TYPE_FILESYSTEM;
3215                                         break;
3216                                 case 1:
3217                                         types |= ZFS_TYPE_VOLUME;
3218                                         break;
3219                                 case 2:
3220                                 case 3:
3221                                         types |= ZFS_TYPE_SNAPSHOT;
3222                                         break;
3223                                 case 4:
3224                                         types |= ZFS_TYPE_BOOKMARK;
3225                                         break;
3226                                 case 5:
3227                                         types = ZFS_TYPE_DATASET |
3228                                             ZFS_TYPE_BOOKMARK;
3229                                         break;
3230                                 default:
3231                                         (void) fprintf(stderr,
3232                                             gettext("invalid type '%s'\n"),
3233                                             value);
3234                                         usage(B_FALSE);
3235                                 }
3236                         }
3237                         break;
3238                 case ':':
3239                         (void) fprintf(stderr, gettext("missing argument for "
3240                             "'%c' option\n"), optopt);
3241                         usage(B_FALSE);
3242                         break;
3243                 case '?':
3244                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3245                             optopt);
3246                         usage(B_FALSE);
3247                 }
3248         }
3249
3250         argc -= optind;
3251         argv += optind;
3252
3253         if (fields == NULL)
3254                 fields = default_fields;
3255
3256         /*
3257          * If we are only going to list snapshot names and sort by name,
3258          * then we can use faster version.
3259          */
3260         if (strcmp(fields, "name") == 0 && zfs_sort_only_by_name(sortcol))
3261                 flags |= ZFS_ITER_SIMPLE;
3262
3263         /*
3264          * If "-o space" and no types were specified, don't display snapshots.
3265          */
3266         if (strcmp(fields, "space") == 0 && types_specified == B_FALSE)
3267                 types &= ~ZFS_TYPE_SNAPSHOT;
3268
3269         /*
3270          * If the user specifies '-o all', the zprop_get_list() doesn't
3271          * normally include the name of the dataset.  For 'zfs list', we always
3272          * want this property to be first.
3273          */
3274         if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
3275             != 0)
3276                 usage(B_FALSE);
3277
3278         cb.cb_first = B_TRUE;
3279
3280         ret = zfs_for_each(argc, argv, flags, types, sortcol, &cb.cb_proplist,
3281             limit, list_callback, &cb);
3282
3283         zprop_free_list(cb.cb_proplist);
3284         zfs_free_sort_columns(sortcol);
3285
3286         if (ret == 0 && cb.cb_first && !cb.cb_scripted)
3287                 (void) fprintf(stderr, gettext("no datasets available\n"));
3288
3289         return (ret);
3290 }
3291
3292 /*
3293  * zfs rename [-f] <fs | snap | vol> <fs | snap | vol>
3294  * zfs rename [-f] -p <fs | vol> <fs | vol>
3295  * zfs rename -r <snap> <snap>
3296  *
3297  * Renames the given dataset to another of the same type.
3298  *
3299  * The '-p' flag creates all the non-existing ancestors of the target first.
3300  */
3301 /* ARGSUSED */
3302 static int
3303 zfs_do_rename(int argc, char **argv)
3304 {
3305         zfs_handle_t *zhp;
3306         int c;
3307         int ret = 0;
3308         boolean_t recurse = B_FALSE;
3309         boolean_t parents = B_FALSE;
3310         boolean_t force_unmount = B_FALSE;
3311
3312         /* check options */
3313         while ((c = getopt(argc, argv, "prf")) != -1) {
3314                 switch (c) {
3315                 case 'p':
3316                         parents = B_TRUE;
3317                         break;
3318                 case 'r':
3319                         recurse = B_TRUE;
3320                         break;
3321                 case 'f':
3322                         force_unmount = B_TRUE;
3323                         break;
3324                 case '?':
3325                 default:
3326                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3327                             optopt);
3328                         usage(B_FALSE);
3329                 }
3330         }
3331
3332         argc -= optind;
3333         argv += optind;
3334
3335         /* check number of arguments */
3336         if (argc < 1) {
3337                 (void) fprintf(stderr, gettext("missing source dataset "
3338                     "argument\n"));
3339                 usage(B_FALSE);
3340         }
3341         if (argc < 2) {
3342                 (void) fprintf(stderr, gettext("missing target dataset "
3343                     "argument\n"));
3344                 usage(B_FALSE);
3345         }
3346         if (argc > 2) {
3347                 (void) fprintf(stderr, gettext("too many arguments\n"));
3348                 usage(B_FALSE);
3349         }
3350
3351         if (recurse && parents) {
3352                 (void) fprintf(stderr, gettext("-p and -r options are mutually "
3353                     "exclusive\n"));
3354                 usage(B_FALSE);
3355         }
3356
3357         if (recurse && strchr(argv[0], '@') == 0) {
3358                 (void) fprintf(stderr, gettext("source dataset for recursive "
3359                     "rename must be a snapshot\n"));
3360                 usage(B_FALSE);
3361         }
3362
3363         if ((zhp = zfs_open(g_zfs, argv[0], parents ? ZFS_TYPE_FILESYSTEM |
3364             ZFS_TYPE_VOLUME : ZFS_TYPE_DATASET)) == NULL)
3365                 return (1);
3366
3367         /* If we were asked and the name looks good, try to create ancestors. */
3368         if (parents && zfs_name_valid(argv[1], zfs_get_type(zhp)) &&
3369             zfs_create_ancestors(g_zfs, argv[1]) != 0) {
3370                 zfs_close(zhp);
3371                 return (1);
3372         }
3373
3374         ret = (zfs_rename(zhp, argv[1], recurse, force_unmount) != 0);
3375
3376         zfs_close(zhp);
3377         return (ret);
3378 }
3379
3380 /*
3381  * zfs promote <fs>
3382  *
3383  * Promotes the given clone fs to be the parent
3384  */
3385 /* ARGSUSED */
3386 static int
3387 zfs_do_promote(int argc, char **argv)
3388 {
3389         zfs_handle_t *zhp;
3390         int ret = 0;
3391
3392         /* check options */
3393         if (argc > 1 && argv[1][0] == '-') {
3394                 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3395                     argv[1][1]);
3396                 usage(B_FALSE);
3397         }
3398
3399         /* check number of arguments */
3400         if (argc < 2) {
3401                 (void) fprintf(stderr, gettext("missing clone filesystem"
3402                     " argument\n"));
3403                 usage(B_FALSE);
3404         }
3405         if (argc > 2) {
3406                 (void) fprintf(stderr, gettext("too many arguments\n"));
3407                 usage(B_FALSE);
3408         }
3409
3410         zhp = zfs_open(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3411         if (zhp == NULL)
3412                 return (1);
3413
3414         ret = (zfs_promote(zhp) != 0);
3415
3416
3417         zfs_close(zhp);
3418         return (ret);
3419 }
3420
3421 /*
3422  * zfs rollback [-rRf] <snapshot>
3423  *
3424  *      -r      Delete any intervening snapshots before doing rollback
3425  *      -R      Delete any snapshots and their clones
3426  *      -f      ignored for backwards compatibility
3427  *
3428  * Given a filesystem, rollback to a specific snapshot, discarding any changes
3429  * since then and making it the active dataset.  If more recent snapshots exist,
3430  * the command will complain unless the '-r' flag is given.
3431  */
3432 typedef struct rollback_cbdata {
3433         uint64_t        cb_create;
3434         boolean_t       cb_first;
3435         int             cb_doclones;
3436         char            *cb_target;
3437         int             cb_error;
3438         boolean_t       cb_recurse;
3439 } rollback_cbdata_t;
3440
3441 static int
3442 rollback_check_dependent(zfs_handle_t *zhp, void *data)
3443 {
3444         rollback_cbdata_t *cbp = data;
3445
3446         if (cbp->cb_first && cbp->cb_recurse) {
3447                 (void) fprintf(stderr, gettext("cannot rollback to "
3448                     "'%s': clones of previous snapshots exist\n"),
3449                     cbp->cb_target);
3450                 (void) fprintf(stderr, gettext("use '-R' to "
3451                     "force deletion of the following clones and "
3452                     "dependents:\n"));
3453                 cbp->cb_first = 0;
3454                 cbp->cb_error = 1;
3455         }
3456
3457         (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
3458
3459         zfs_close(zhp);
3460         return (0);
3461 }
3462
3463
3464 /*
3465  * Report any snapshots more recent than the one specified.  Used when '-r' is
3466  * not specified.  We reuse this same callback for the snapshot dependents - if
3467  * 'cb_dependent' is set, then this is a dependent and we should report it
3468  * without checking the transaction group.
3469  */
3470 static int
3471 rollback_check(zfs_handle_t *zhp, void *data)
3472 {
3473         rollback_cbdata_t *cbp = data;
3474
3475         if (cbp->cb_doclones) {
3476                 zfs_close(zhp);
3477                 return (0);
3478         }
3479
3480         if (zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > cbp->cb_create) {
3481                 if (cbp->cb_first && !cbp->cb_recurse) {
3482                         (void) fprintf(stderr, gettext("cannot "
3483                             "rollback to '%s': more recent snapshots "
3484                             "or bookmarks exist\n"),
3485                             cbp->cb_target);
3486                         (void) fprintf(stderr, gettext("use '-r' to "
3487                             "force deletion of the following "
3488                             "snapshots and bookmarks:\n"));
3489                         cbp->cb_first = 0;
3490                         cbp->cb_error = 1;
3491                 }
3492
3493                 if (cbp->cb_recurse) {
3494                         if (zfs_iter_dependents(zhp, B_TRUE,
3495                             rollback_check_dependent, cbp) != 0) {
3496                                 zfs_close(zhp);
3497                                 return (-1);
3498                         }
3499                 } else {
3500                         (void) fprintf(stderr, "%s\n",
3501                             zfs_get_name(zhp));
3502                 }
3503         }
3504         zfs_close(zhp);
3505         return (0);
3506 }
3507
3508 static int
3509 zfs_do_rollback(int argc, char **argv)
3510 {
3511         int ret = 0;
3512         int c;
3513         boolean_t force = B_FALSE;
3514         rollback_cbdata_t cb = { 0 };
3515         zfs_handle_t *zhp, *snap;
3516         char parentname[ZFS_MAX_DATASET_NAME_LEN];
3517         char *delim;
3518
3519         /* check options */
3520         while ((c = getopt(argc, argv, "rRf")) != -1) {
3521                 switch (c) {
3522                 case 'r':
3523                         cb.cb_recurse = 1;
3524                         break;
3525                 case 'R':
3526                         cb.cb_recurse = 1;
3527                         cb.cb_doclones = 1;
3528                         break;
3529                 case 'f':
3530                         force = B_TRUE;
3531                         break;
3532                 case '?':
3533                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3534                             optopt);
3535                         usage(B_FALSE);
3536                 }
3537         }
3538
3539         argc -= optind;
3540         argv += optind;
3541
3542         /* check number of arguments */
3543         if (argc < 1) {
3544                 (void) fprintf(stderr, gettext("missing dataset argument\n"));
3545                 usage(B_FALSE);
3546         }
3547         if (argc > 1) {
3548                 (void) fprintf(stderr, gettext("too many arguments\n"));
3549                 usage(B_FALSE);
3550         }
3551
3552         /* open the snapshot */
3553         if ((snap = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
3554                 return (1);
3555
3556         /* open the parent dataset */
3557         (void) strlcpy(parentname, argv[0], sizeof (parentname));
3558         verify((delim = strrchr(parentname, '@')) != NULL);
3559         *delim = '\0';
3560         if ((zhp = zfs_open(g_zfs, parentname, ZFS_TYPE_DATASET)) == NULL) {
3561                 zfs_close(snap);
3562                 return (1);
3563         }
3564
3565         /*
3566          * Check for more recent snapshots and/or clones based on the presence
3567          * of '-r' and '-R'.
3568          */
3569         cb.cb_target = argv[0];
3570         cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG);
3571         cb.cb_first = B_TRUE;
3572         cb.cb_error = 0;
3573         if ((ret = zfs_iter_snapshots(zhp, B_FALSE, rollback_check, &cb)) != 0)
3574                 goto out;
3575         if ((ret = zfs_iter_bookmarks(zhp, rollback_check, &cb)) != 0)
3576                 goto out;
3577
3578         if ((ret = cb.cb_error) != 0)
3579                 goto out;
3580
3581         /*
3582          * Rollback parent to the given snapshot.
3583          */
3584         ret = zfs_rollback(zhp, snap, force);
3585
3586 out:
3587         zfs_close(snap);
3588         zfs_close(zhp);
3589
3590         if (ret == 0)
3591                 return (0);
3592         else
3593                 return (1);
3594 }
3595
3596 /*
3597  * zfs set property=value ... { fs | snap | vol } ...
3598  *
3599  * Sets the given properties for all datasets specified on the command line.
3600  */
3601
3602 static int
3603 set_callback(zfs_handle_t *zhp, void *data)
3604 {
3605         nvlist_t *props = data;
3606
3607         if (zfs_prop_set_list(zhp, props) != 0) {
3608                 switch (libzfs_errno(g_zfs)) {
3609                 case EZFS_MOUNTFAILED:
3610                         (void) fprintf(stderr, gettext("property may be set "
3611                             "but unable to remount filesystem\n"));
3612                         break;
3613                 case EZFS_SHARENFSFAILED:
3614                         (void) fprintf(stderr, gettext("property may be set "
3615                             "but unable to reshare filesystem\n"));
3616                         break;
3617                 }
3618                 return (1);
3619         }
3620         return (0);
3621 }
3622
3623 static int
3624 zfs_do_set(int argc, char **argv)
3625 {
3626         nvlist_t *props = NULL;
3627         int ds_start = -1; /* argv idx of first dataset arg */
3628         int ret = 0;
3629         int i;
3630
3631         /* check for options */
3632         if (argc > 1 && argv[1][0] == '-') {
3633                 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3634                     argv[1][1]);
3635                 usage(B_FALSE);
3636         }
3637
3638         /* check number of arguments */
3639         if (argc < 2) {
3640                 (void) fprintf(stderr, gettext("missing arguments\n"));
3641                 usage(B_FALSE);
3642         }
3643         if (argc < 3) {
3644                 if (strchr(argv[1], '=') == NULL) {
3645                         (void) fprintf(stderr, gettext("missing property=value "
3646                             "argument(s)\n"));
3647                 } else {
3648                         (void) fprintf(stderr, gettext("missing dataset "
3649                             "name(s)\n"));
3650                 }
3651                 usage(B_FALSE);
3652         }
3653
3654         /* validate argument order:  prop=val args followed by dataset args */
3655         for (i = 1; i < argc; i++) {
3656                 if (strchr(argv[i], '=') != NULL) {
3657                         if (ds_start > 0) {
3658                                 /* out-of-order prop=val argument */
3659                                 (void) fprintf(stderr, gettext("invalid "
3660                                     "argument order\n"));
3661                                 usage(B_FALSE);
3662                         }
3663                 } else if (ds_start < 0) {
3664                         ds_start = i;
3665                 }
3666         }
3667         if (ds_start < 0) {
3668                 (void) fprintf(stderr, gettext("missing dataset name(s)\n"));
3669                 usage(B_FALSE);
3670         }
3671
3672         /* Populate a list of property settings */
3673         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
3674                 nomem();
3675         for (i = 1; i < ds_start; i++) {
3676                 if (!parseprop(props, argv[i])) {
3677                         ret = -1;
3678                         goto error;
3679                 }
3680         }
3681
3682         ret = zfs_for_each(argc - ds_start, argv + ds_start, 0,
3683             ZFS_TYPE_DATASET, NULL, NULL, 0, set_callback, props);
3684
3685 error:
3686         nvlist_free(props);
3687         return (ret);
3688 }
3689
3690 typedef struct snap_cbdata {
3691         nvlist_t *sd_nvl;
3692         boolean_t sd_recursive;
3693         const char *sd_snapname;
3694 } snap_cbdata_t;
3695
3696 static int
3697 zfs_snapshot_cb(zfs_handle_t *zhp, void *arg)
3698 {
3699         snap_cbdata_t *sd = arg;
3700         char *name;
3701         int rv = 0;
3702         int error;
3703
3704         if (sd->sd_recursive &&
3705             zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) != 0) {
3706                 zfs_close(zhp);
3707                 return (0);
3708         }
3709
3710         error = asprintf(&name, "%s@%s", zfs_get_name(zhp), sd->sd_snapname);
3711         if (error == -1)
3712                 nomem();
3713         fnvlist_add_boolean(sd->sd_nvl, name);
3714         free(name);
3715
3716         if (sd->sd_recursive)
3717                 rv = zfs_iter_filesystems(zhp, zfs_snapshot_cb, sd);
3718         zfs_close(zhp);
3719         return (rv);
3720 }
3721
3722 /*
3723  * zfs snapshot [-r] [-o prop=value] ... <fs@snap>
3724  *
3725  * Creates a snapshot with the given name.  While functionally equivalent to
3726  * 'zfs create', it is a separate command to differentiate intent.
3727  */
3728 static int
3729 zfs_do_snapshot(int argc, char **argv)
3730 {
3731         int ret = 0;
3732         signed char c;
3733         nvlist_t *props;
3734         snap_cbdata_t sd = { 0 };
3735         boolean_t multiple_snaps = B_FALSE;
3736
3737         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
3738                 nomem();
3739         if (nvlist_alloc(&sd.sd_nvl, NV_UNIQUE_NAME, 0) != 0)
3740                 nomem();
3741
3742         /* check options */
3743         while ((c = getopt(argc, argv, "ro:")) != -1) {
3744                 switch (c) {
3745                 case 'o':
3746                         if (!parseprop(props, optarg)) {
3747                                 nvlist_free(sd.sd_nvl);
3748                                 nvlist_free(props);
3749                                 return (1);
3750                         }
3751                         break;
3752                 case 'r':
3753                         sd.sd_recursive = B_TRUE;
3754                         multiple_snaps = B_TRUE;
3755                         break;
3756                 case '?':
3757                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3758                             optopt);
3759                         goto usage;
3760                 }
3761         }
3762
3763         argc -= optind;
3764         argv += optind;
3765
3766         /* check number of arguments */
3767         if (argc < 1) {
3768                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
3769                 goto usage;
3770         }
3771
3772         if (argc > 1)
3773                 multiple_snaps = B_TRUE;
3774         for (; argc > 0; argc--, argv++) {
3775                 char *atp;
3776                 zfs_handle_t *zhp;
3777
3778                 atp = strchr(argv[0], '@');
3779                 if (atp == NULL)
3780                         goto usage;
3781                 *atp = '\0';
3782                 sd.sd_snapname = atp + 1;
3783                 zhp = zfs_open(g_zfs, argv[0],
3784                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3785                 if (zhp == NULL)
3786                         goto usage;
3787                 if (zfs_snapshot_cb(zhp, &sd) != 0)
3788                         goto usage;
3789         }
3790
3791         ret = zfs_snapshot_nvl(g_zfs, sd.sd_nvl, props);
3792         nvlist_free(sd.sd_nvl);
3793         nvlist_free(props);
3794         if (ret != 0 && multiple_snaps)
3795                 (void) fprintf(stderr, gettext("no snapshots were created\n"));
3796         return (ret != 0);
3797
3798 usage:
3799         nvlist_free(sd.sd_nvl);
3800         nvlist_free(props);
3801         usage(B_FALSE);
3802         return (-1);
3803 }
3804
3805 /*
3806  * Send a backup stream to stdout.
3807  */
3808 static int
3809 zfs_do_send(int argc, char **argv)
3810 {
3811         char *fromname = NULL;
3812         char *toname = NULL;
3813         char *resume_token = NULL;
3814         char *cp;
3815         zfs_handle_t *zhp;
3816         sendflags_t flags = { 0 };
3817         int c, err;
3818         nvlist_t *dbgnv = NULL;
3819         boolean_t extraverbose = B_FALSE;
3820
3821         struct option long_options[] = {
3822                 {"replicate",   no_argument,            NULL, 'R'},
3823                 {"props",       no_argument,            NULL, 'p'},
3824                 {"parsable",    no_argument,            NULL, 'P'},
3825                 {"dedup",       no_argument,            NULL, 'D'},
3826                 {"verbose",     no_argument,            NULL, 'v'},
3827                 {"dryrun",      no_argument,            NULL, 'n'},
3828                 {"large-block", no_argument,            NULL, 'L'},
3829                 {"embed",       no_argument,            NULL, 'e'},
3830                 {"resume",      required_argument,      NULL, 't'},
3831                 {"compressed",  no_argument,            NULL, 'c'},
3832                 {0, 0, 0, 0}
3833         };
3834
3835         /* check options */
3836         while ((c = getopt_long(argc, argv, ":i:I:RDpvnPLet:c", long_options,
3837             NULL)) != -1) {
3838                 switch (c) {
3839                 case 'i':
3840                         if (fromname)
3841                                 usage(B_FALSE);
3842                         fromname = optarg;
3843                         break;
3844                 case 'I':
3845                         if (fromname)
3846                                 usage(B_FALSE);
3847                         fromname = optarg;
3848                         flags.doall = B_TRUE;
3849                         break;
3850                 case 'R':
3851                         flags.replicate = B_TRUE;
3852                         break;
3853                 case 'p':
3854                         flags.props = B_TRUE;
3855                         break;
3856                 case 'P':
3857                         flags.parsable = B_TRUE;
3858                         flags.verbose = B_TRUE;
3859                         break;
3860                 case 'v':
3861                         if (flags.verbose)
3862                                 extraverbose = B_TRUE;
3863                         flags.verbose = B_TRUE;
3864                         flags.progress = B_TRUE;
3865                         break;
3866                 case 'D':
3867                         flags.dedup = B_TRUE;
3868                         break;
3869                 case 'n':
3870                         flags.dryrun = B_TRUE;
3871                         break;
3872                 case 'L':
3873                         flags.largeblock = B_TRUE;
3874                         break;
3875                 case 'e':
3876                         flags.embed_data = B_TRUE;
3877                         break;
3878                 case 't':
3879                         resume_token = optarg;
3880                         break;
3881                 case 'c':
3882                         flags.compress = B_TRUE;
3883                         break;
3884                 case ':':
3885                         /*
3886                          * If a parameter was not passed, optopt contains the
3887                          * value that would normally lead us into the
3888                          * appropriate case statement.  If it's > 256, then this
3889                          * must be a longopt and we should look at argv to get
3890                          * the string.  Otherwise it's just the character, so we
3891                          * should use it directly.
3892                          */
3893                         if (optopt <= UINT8_MAX) {
3894                                 (void) fprintf(stderr,
3895                                     gettext("missing argument for '%c' "
3896                                     "option\n"), optopt);
3897                         } else {
3898                                 (void) fprintf(stderr,
3899                                     gettext("missing argument for '%s' "
3900                                     "option\n"), argv[optind - 1]);
3901                         }
3902                         usage(B_FALSE);
3903                         break;
3904                 case '?':
3905                         /*FALLTHROUGH*/
3906                 default:
3907                         /*
3908                          * If an invalid flag was passed, optopt contains the
3909                          * character if it was a short flag, or 0 if it was a
3910                          * longopt.
3911                          */
3912                         if (optopt != 0) {
3913                                 (void) fprintf(stderr,
3914                                     gettext("invalid option '%c'\n"), optopt);
3915                         } else {
3916                                 (void) fprintf(stderr,
3917                                     gettext("invalid option '%s'\n"),
3918                                     argv[optind - 1]);
3919
3920                         }
3921                         usage(B_FALSE);
3922                 }
3923         }
3924
3925         argc -= optind;
3926         argv += optind;
3927
3928         if (resume_token != NULL) {
3929                 if (fromname != NULL || flags.replicate || flags.props ||
3930                     flags.dedup) {
3931                         (void) fprintf(stderr,
3932                             gettext("invalid flags combined with -t\n"));
3933                         usage(B_FALSE);
3934                 }
3935                 if (argc != 0) {
3936                         (void) fprintf(stderr, gettext("no additional "
3937                             "arguments are permitted with -t\n"));
3938                         usage(B_FALSE);
3939                 }
3940         } else {
3941                 if (argc < 1) {
3942                         (void) fprintf(stderr,
3943                             gettext("missing snapshot argument\n"));
3944                         usage(B_FALSE);
3945                 }
3946                 if (argc > 1) {
3947                         (void) fprintf(stderr, gettext("too many arguments\n"));
3948                         usage(B_FALSE);
3949                 }
3950         }
3951
3952         if (!flags.dryrun && isatty(STDOUT_FILENO)) {
3953                 (void) fprintf(stderr,
3954                     gettext("Error: Stream can not be written to a terminal.\n"
3955                     "You must redirect standard output.\n"));
3956                 return (1);
3957         }
3958
3959         if (resume_token != NULL) {
3960                 return (zfs_send_resume(g_zfs, &flags, STDOUT_FILENO,
3961                     resume_token));
3962         }
3963
3964         /*
3965          * Special case sending a filesystem, or from a bookmark.
3966          */
3967         if (strchr(argv[0], '@') == NULL ||
3968             (fromname && strchr(fromname, '#') != NULL)) {
3969                 char frombuf[ZFS_MAX_DATASET_NAME_LEN];
3970                 enum lzc_send_flags lzc_flags = 0;
3971
3972                 if (flags.replicate || flags.doall || flags.props ||
3973                     flags.dedup || flags.dryrun || flags.verbose ||
3974                     flags.progress) {
3975                         (void) fprintf(stderr,
3976                             gettext("Error: "
3977                             "Unsupported flag with filesystem or bookmark.\n"));
3978                         return (1);
3979                 }
3980
3981                 zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET);
3982                 if (zhp == NULL)
3983                         return (1);
3984
3985                 if (flags.largeblock)
3986                         lzc_flags |= LZC_SEND_FLAG_LARGE_BLOCK;
3987                 if (flags.embed_data)
3988                         lzc_flags |= LZC_SEND_FLAG_EMBED_DATA;
3989                 if (flags.compress)
3990                         lzc_flags |= LZC_SEND_FLAG_COMPRESS;
3991
3992                 if (fromname != NULL &&
3993                     (fromname[0] == '#' || fromname[0] == '@')) {
3994                         /*
3995                          * Incremental source name begins with # or @.
3996                          * Default to same fs as target.
3997                          */
3998                         (void) strlcpy(frombuf, argv[0], sizeof (frombuf));
3999                         cp = strchr(frombuf, '@');
4000                         if (cp != NULL)
4001                                 *cp = '\0';
4002                         (void) strlcat(frombuf, fromname, sizeof (frombuf));
4003                         fromname = frombuf;
4004                 }
4005                 err = zfs_send_one(zhp, fromname, STDOUT_FILENO, lzc_flags);
4006                 zfs_close(zhp);
4007                 return (err != 0);
4008         }
4009
4010         cp = strchr(argv[0], '@');
4011         *cp = '\0';
4012         toname = cp + 1;
4013         zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
4014         if (zhp == NULL)
4015                 return (1);
4016
4017         /*
4018          * If they specified the full path to the snapshot, chop off
4019          * everything except the short name of the snapshot, but special
4020          * case if they specify the origin.
4021          */
4022         if (fromname && (cp = strchr(fromname, '@')) != NULL) {
4023                 char origin[ZFS_MAX_DATASET_NAME_LEN];
4024                 zprop_source_t src;
4025
4026                 (void) zfs_prop_get(zhp, ZFS_PROP_ORIGIN,
4027                     origin, sizeof (origin), &src, NULL, 0, B_FALSE);
4028
4029                 if (strcmp(origin, fromname) == 0) {
4030                         fromname = NULL;
4031                         flags.fromorigin = B_TRUE;
4032                 } else {
4033                         *cp = '\0';
4034                         if (cp != fromname && strcmp(argv[0], fromname)) {
4035                                 (void) fprintf(stderr,
4036                                     gettext("incremental source must be "
4037                                     "in same filesystem\n"));
4038                                 usage(B_FALSE);
4039                         }
4040                         fromname = cp + 1;
4041                         if (strchr(fromname, '@') || strchr(fromname, '/')) {
4042                                 (void) fprintf(stderr,
4043                                     gettext("invalid incremental source\n"));
4044                                 usage(B_FALSE);
4045                         }
4046                 }
4047         }
4048
4049         if (flags.replicate && fromname == NULL)
4050                 flags.doall = B_TRUE;
4051
4052         err = zfs_send(zhp, fromname, toname, &flags, STDOUT_FILENO, NULL, 0,
4053             extraverbose ? &dbgnv : NULL);
4054
4055         if (extraverbose && dbgnv != NULL) {
4056                 /*
4057                  * dump_nvlist prints to stdout, but that's been
4058                  * redirected to a file.  Make it print to stderr
4059                  * instead.
4060                  */
4061                 (void) dup2(STDERR_FILENO, STDOUT_FILENO);
4062                 dump_nvlist(dbgnv, 0);
4063                 nvlist_free(dbgnv);
4064         }
4065         zfs_close(zhp);
4066
4067         return (err != 0);
4068 }
4069
4070 /*
4071  * Restore a backup stream from stdin.
4072  */
4073 static int
4074 zfs_do_receive(int argc, char **argv)
4075 {
4076         int c, err = 0;
4077         recvflags_t flags = { 0 };
4078         boolean_t abort_resumable = B_FALSE;
4079         nvlist_t *props;
4080
4081         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
4082                 nomem();
4083
4084         /* check options */
4085         while ((c = getopt(argc, argv, ":o:x:denuvFsA")) != -1) {
4086                 switch (c) {
4087                 case 'o':
4088                         if (!parseprop(props, optarg)) {
4089                                 nvlist_free(props);
4090                                 usage(B_FALSE);
4091                         }
4092                         break;
4093                 case 'x':
4094                         if (!parsepropname(props, optarg)) {
4095                                 nvlist_free(props);
4096                                 usage(B_FALSE);
4097                         }
4098                         break;
4099                 case 'd':
4100                         flags.isprefix = B_TRUE;
4101                         break;
4102                 case 'e':
4103                         flags.isprefix = B_TRUE;
4104                         flags.istail = B_TRUE;
4105                         break;
4106                 case 'n':
4107                         flags.dryrun = B_TRUE;
4108                         break;
4109                 case 'u':
4110                         flags.nomount = B_TRUE;
4111                         break;
4112                 case 'v':
4113                         flags.verbose = B_TRUE;
4114                         break;
4115                 case 's':
4116                         flags.resumable = B_TRUE;
4117                         break;
4118                 case 'F':
4119                         flags.force = B_TRUE;
4120                         break;
4121                 case 'A':
4122                         abort_resumable = B_TRUE;
4123                         break;
4124                 case ':':
4125                         (void) fprintf(stderr, gettext("missing argument for "
4126                             "'%c' option\n"), optopt);
4127                         usage(B_FALSE);
4128                         break;
4129                 case '?':
4130                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
4131                             optopt);
4132                         usage(B_FALSE);
4133                 }
4134         }
4135
4136         argc -= optind;
4137         argv += optind;
4138
4139         /* check number of arguments */
4140         if (argc < 1) {
4141                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
4142                 usage(B_FALSE);
4143         }
4144         if (argc > 1) {
4145                 (void) fprintf(stderr, gettext("too many arguments\n"));
4146                 usage(B_FALSE);
4147         }
4148
4149         if (abort_resumable) {
4150                 if (flags.isprefix || flags.istail || flags.dryrun ||
4151                     flags.resumable || flags.nomount) {
4152                         (void) fprintf(stderr, gettext("invalid option\n"));
4153                         usage(B_FALSE);
4154                 }
4155
4156                 char namebuf[ZFS_MAX_DATASET_NAME_LEN];
4157                 (void) snprintf(namebuf, sizeof (namebuf),
4158                     "%s/%%recv", argv[0]);
4159
4160                 if (zfs_dataset_exists(g_zfs, namebuf,
4161                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME)) {
4162                         zfs_handle_t *zhp = zfs_open(g_zfs,
4163                             namebuf, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
4164                         if (zhp == NULL) {
4165                                 nvlist_free(props);
4166                                 return (1);
4167                         }
4168                         err = zfs_destroy(zhp, B_FALSE);
4169                         zfs_close(zhp);
4170                 } else {
4171                         zfs_handle_t *zhp = zfs_open(g_zfs,
4172                             argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
4173                         if (zhp == NULL)
4174                                 usage(B_FALSE);
4175                         if (!zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) ||
4176                             zfs_prop_get(zhp, ZFS_PROP_RECEIVE_RESUME_TOKEN,
4177                             NULL, 0, NULL, NULL, 0, B_TRUE) == -1) {
4178                                 (void) fprintf(stderr,
4179                                     gettext("'%s' does not have any "
4180                                     "resumable receive state to abort\n"),
4181                                     argv[0]);
4182                                 nvlist_free(props);
4183                                 zfs_close(zhp);
4184                                 return (1);
4185                         }
4186                         err = zfs_destroy(zhp, B_FALSE);
4187                         zfs_close(zhp);
4188                 }
4189                 nvlist_free(props);
4190                 return (err != 0);
4191         }
4192
4193         if (isatty(STDIN_FILENO)) {
4194                 (void) fprintf(stderr,
4195                     gettext("Error: Backup stream can not be read "
4196                     "from a terminal.\n"
4197                     "You must redirect standard input.\n"));
4198                 nvlist_free(props);
4199                 return (1);
4200         }
4201         err = zfs_receive(g_zfs, argv[0], props, &flags, STDIN_FILENO, NULL);
4202         nvlist_free(props);
4203
4204         return (err != 0);
4205 }
4206
4207 /*
4208  * allow/unallow stuff
4209  */
4210 /* copied from zfs/sys/dsl_deleg.h */
4211 #define ZFS_DELEG_PERM_CREATE           "create"
4212 #define ZFS_DELEG_PERM_DESTROY          "destroy"
4213 #define ZFS_DELEG_PERM_SNAPSHOT         "snapshot"
4214 #define ZFS_DELEG_PERM_ROLLBACK         "rollback"
4215 #define ZFS_DELEG_PERM_CLONE            "clone"
4216 #define ZFS_DELEG_PERM_PROMOTE          "promote"
4217 #define ZFS_DELEG_PERM_RENAME           "rename"
4218 #define ZFS_DELEG_PERM_MOUNT            "mount"
4219 #define ZFS_DELEG_PERM_SHARE            "share"
4220 #define ZFS_DELEG_PERM_SEND             "send"
4221 #define ZFS_DELEG_PERM_RECEIVE          "receive"
4222 #define ZFS_DELEG_PERM_ALLOW            "allow"
4223 #define ZFS_DELEG_PERM_USERPROP         "userprop"
4224 #define ZFS_DELEG_PERM_VSCAN            "vscan" /* ??? */
4225 #define ZFS_DELEG_PERM_USERQUOTA        "userquota"
4226 #define ZFS_DELEG_PERM_GROUPQUOTA       "groupquota"
4227 #define ZFS_DELEG_PERM_USERUSED         "userused"
4228 #define ZFS_DELEG_PERM_GROUPUSED        "groupused"
4229 #define ZFS_DELEG_PERM_USEROBJQUOTA     "userobjquota"
4230 #define ZFS_DELEG_PERM_GROUPOBJQUOTA    "groupobjquota"
4231 #define ZFS_DELEG_PERM_USEROBJUSED      "userobjused"
4232 #define ZFS_DELEG_PERM_GROUPOBJUSED     "groupobjused"
4233
4234 #define ZFS_DELEG_PERM_HOLD             "hold"
4235 #define ZFS_DELEG_PERM_RELEASE          "release"
4236 #define ZFS_DELEG_PERM_DIFF             "diff"
4237 #define ZFS_DELEG_PERM_BOOKMARK         "bookmark"
4238
4239 #define ZFS_NUM_DELEG_NOTES ZFS_DELEG_NOTE_NONE
4240
4241 static zfs_deleg_perm_tab_t zfs_deleg_perm_tbl[] = {
4242         { ZFS_DELEG_PERM_ALLOW, ZFS_DELEG_NOTE_ALLOW },
4243         { ZFS_DELEG_PERM_CLONE, ZFS_DELEG_NOTE_CLONE },
4244         { ZFS_DELEG_PERM_CREATE, ZFS_DELEG_NOTE_CREATE },
4245         { ZFS_DELEG_PERM_DESTROY, ZFS_DELEG_NOTE_DESTROY },
4246         { ZFS_DELEG_PERM_DIFF, ZFS_DELEG_NOTE_DIFF},
4247         { ZFS_DELEG_PERM_HOLD, ZFS_DELEG_NOTE_HOLD },
4248         { ZFS_DELEG_PERM_MOUNT, ZFS_DELEG_NOTE_MOUNT },
4249         { ZFS_DELEG_PERM_PROMOTE, ZFS_DELEG_NOTE_PROMOTE },
4250         { ZFS_DELEG_PERM_RECEIVE, ZFS_DELEG_NOTE_RECEIVE },
4251         { ZFS_DELEG_PERM_RELEASE, ZFS_DELEG_NOTE_RELEASE },
4252         { ZFS_DELEG_PERM_RENAME, ZFS_DELEG_NOTE_RENAME },
4253         { ZFS_DELEG_PERM_ROLLBACK, ZFS_DELEG_NOTE_ROLLBACK },
4254         { ZFS_DELEG_PERM_SEND, ZFS_DELEG_NOTE_SEND },
4255         { ZFS_DELEG_PERM_SHARE, ZFS_DELEG_NOTE_SHARE },
4256         { ZFS_DELEG_PERM_SNAPSHOT, ZFS_DELEG_NOTE_SNAPSHOT },
4257         { ZFS_DELEG_PERM_BOOKMARK, ZFS_DELEG_NOTE_BOOKMARK },
4258
4259         { ZFS_DELEG_PERM_GROUPQUOTA, ZFS_DELEG_NOTE_GROUPQUOTA },
4260         { ZFS_DELEG_PERM_GROUPUSED, ZFS_DELEG_NOTE_GROUPUSED },
4261         { ZFS_DELEG_PERM_USERPROP, ZFS_DELEG_NOTE_USERPROP },
4262         { ZFS_DELEG_PERM_USERQUOTA, ZFS_DELEG_NOTE_USERQUOTA },
4263         { ZFS_DELEG_PERM_USERUSED, ZFS_DELEG_NOTE_USERUSED },
4264         { ZFS_DELEG_PERM_USEROBJQUOTA, ZFS_DELEG_NOTE_USEROBJQUOTA },
4265         { ZFS_DELEG_PERM_USEROBJUSED, ZFS_DELEG_NOTE_USEROBJUSED },
4266         { ZFS_DELEG_PERM_GROUPOBJQUOTA, ZFS_DELEG_NOTE_GROUPOBJQUOTA },
4267         { ZFS_DELEG_PERM_GROUPOBJUSED, ZFS_DELEG_NOTE_GROUPOBJUSED },
4268         { NULL, ZFS_DELEG_NOTE_NONE }
4269 };
4270
4271 /* permission structure */
4272 typedef struct deleg_perm {
4273         zfs_deleg_who_type_t    dp_who_type;
4274         const char              *dp_name;
4275         boolean_t               dp_local;
4276         boolean_t               dp_descend;
4277 } deleg_perm_t;
4278
4279 /* */
4280 typedef struct deleg_perm_node {
4281         deleg_perm_t            dpn_perm;
4282
4283         uu_avl_node_t           dpn_avl_node;
4284 } deleg_perm_node_t;
4285
4286 typedef struct fs_perm fs_perm_t;
4287
4288 /* permissions set */
4289 typedef struct who_perm {
4290         zfs_deleg_who_type_t    who_type;
4291         const char              *who_name;              /* id */
4292         char                    who_ug_name[256];       /* user/group name */
4293         fs_perm_t               *who_fsperm;            /* uplink */
4294
4295         uu_avl_t                *who_deleg_perm_avl;    /* permissions */
4296 } who_perm_t;
4297
4298 /* */
4299 typedef struct who_perm_node {
4300         who_perm_t      who_perm;
4301         uu_avl_node_t   who_avl_node;
4302 } who_perm_node_t;
4303
4304 typedef struct fs_perm_set fs_perm_set_t;
4305 /* fs permissions */
4306 struct fs_perm {
4307         const char              *fsp_name;
4308
4309         uu_avl_t                *fsp_sc_avl;    /* sets,create */
4310         uu_avl_t                *fsp_uge_avl;   /* user,group,everyone */
4311
4312         fs_perm_set_t           *fsp_set;       /* uplink */
4313 };
4314
4315 /* */
4316 typedef struct fs_perm_node {
4317         fs_perm_t       fspn_fsperm;
4318         uu_avl_t        *fspn_avl;
4319
4320         uu_list_node_t  fspn_list_node;
4321 } fs_perm_node_t;
4322
4323 /* top level structure */
4324 struct fs_perm_set {
4325         uu_list_pool_t  *fsps_list_pool;
4326         uu_list_t       *fsps_list; /* list of fs_perms */
4327
4328         uu_avl_pool_t   *fsps_named_set_avl_pool;
4329         uu_avl_pool_t   *fsps_who_perm_avl_pool;
4330         uu_avl_pool_t   *fsps_deleg_perm_avl_pool;
4331 };
4332
4333 static inline const char *
4334 deleg_perm_type(zfs_deleg_note_t note)
4335 {
4336         /* subcommands */
4337         switch (note) {
4338                 /* SUBCOMMANDS */
4339                 /* OTHER */
4340         case ZFS_DELEG_NOTE_GROUPQUOTA:
4341         case ZFS_DELEG_NOTE_GROUPUSED:
4342         case ZFS_DELEG_NOTE_USERPROP:
4343         case ZFS_DELEG_NOTE_USERQUOTA:
4344         case ZFS_DELEG_NOTE_USERUSED:
4345         case ZFS_DELEG_NOTE_USEROBJQUOTA:
4346         case ZFS_DELEG_NOTE_USEROBJUSED:
4347         case ZFS_DELEG_NOTE_GROUPOBJQUOTA:
4348         case ZFS_DELEG_NOTE_GROUPOBJUSED:
4349                 /* other */
4350                 return (gettext("other"));
4351         default:
4352                 return (gettext("subcommand"));
4353         }
4354 }
4355
4356 static int
4357 who_type2weight(zfs_deleg_who_type_t who_type)
4358 {
4359         int res;
4360         switch (who_type) {
4361                 case ZFS_DELEG_NAMED_SET_SETS:
4362                 case ZFS_DELEG_NAMED_SET:
4363                         res = 0;
4364                         break;
4365                 case ZFS_DELEG_CREATE_SETS:
4366                 case ZFS_DELEG_CREATE:
4367                         res = 1;
4368                         break;
4369                 case ZFS_DELEG_USER_SETS:
4370                 case ZFS_DELEG_USER:
4371                         res = 2;
4372                         break;
4373                 case ZFS_DELEG_GROUP_SETS:
4374                 case ZFS_DELEG_GROUP:
4375                         res = 3;
4376                         break;
4377                 case ZFS_DELEG_EVERYONE_SETS:
4378                 case ZFS_DELEG_EVERYONE:
4379                         res = 4;
4380                         break;
4381                 default:
4382                         res = -1;
4383         }
4384
4385         return (res);
4386 }
4387
4388 /* ARGSUSED */
4389 static int
4390 who_perm_compare(const void *larg, const void *rarg, void *unused)
4391 {
4392         const who_perm_node_t *l = larg;
4393         const who_perm_node_t *r = rarg;
4394         zfs_deleg_who_type_t ltype = l->who_perm.who_type;
4395         zfs_deleg_who_type_t rtype = r->who_perm.who_type;
4396         int lweight = who_type2weight(ltype);
4397         int rweight = who_type2weight(rtype);
4398         int res = lweight - rweight;
4399         if (res == 0)
4400                 res = strncmp(l->who_perm.who_name, r->who_perm.who_name,
4401                     ZFS_MAX_DELEG_NAME-1);
4402
4403         if (res == 0)
4404                 return (0);
4405         if (res > 0)
4406                 return (1);
4407         else
4408                 return (-1);
4409 }
4410
4411 /* ARGSUSED */
4412 static int
4413 deleg_perm_compare(const void *larg, const void *rarg, void *unused)
4414 {
4415         const deleg_perm_node_t *l = larg;
4416         const deleg_perm_node_t *r = rarg;
4417         int res =  strncmp(l->dpn_perm.dp_name, r->dpn_perm.dp_name,
4418             ZFS_MAX_DELEG_NAME-1);
4419
4420         if (res == 0)
4421                 return (0);
4422
4423         if (res > 0)
4424                 return (1);
4425         else
4426                 return (-1);
4427 }
4428
4429 static inline void
4430 fs_perm_set_init(fs_perm_set_t *fspset)
4431 {
4432         bzero(fspset, sizeof (fs_perm_set_t));
4433
4434         if ((fspset->fsps_list_pool = uu_list_pool_create("fsps_list_pool",
4435             sizeof (fs_perm_node_t), offsetof(fs_perm_node_t, fspn_list_node),
4436             NULL, UU_DEFAULT)) == NULL)
4437                 nomem();
4438         if ((fspset->fsps_list = uu_list_create(fspset->fsps_list_pool, NULL,
4439             UU_DEFAULT)) == NULL)
4440                 nomem();
4441
4442         if ((fspset->fsps_named_set_avl_pool = uu_avl_pool_create(
4443             "named_set_avl_pool", sizeof (who_perm_node_t), offsetof(
4444             who_perm_node_t, who_avl_node), who_perm_compare,
4445             UU_DEFAULT)) == NULL)
4446                 nomem();
4447
4448         if ((fspset->fsps_who_perm_avl_pool = uu_avl_pool_create(
4449             "who_perm_avl_pool", sizeof (who_perm_node_t), offsetof(
4450             who_perm_node_t, who_avl_node), who_perm_compare,
4451             UU_DEFAULT)) == NULL)
4452                 nomem();
4453
4454         if ((fspset->fsps_deleg_perm_avl_pool = uu_avl_pool_create(
4455             "deleg_perm_avl_pool", sizeof (deleg_perm_node_t), offsetof(
4456             deleg_perm_node_t, dpn_avl_node), deleg_perm_compare, UU_DEFAULT))
4457             == NULL)
4458                 nomem();
4459 }
4460
4461 static inline void fs_perm_fini(fs_perm_t *);
4462 static inline void who_perm_fini(who_perm_t *);
4463
4464 static inline void
4465 fs_perm_set_fini(fs_perm_set_t *fspset)
4466 {
4467         fs_perm_node_t *node = uu_list_first(fspset->fsps_list);
4468
4469         while (node != NULL) {
4470                 fs_perm_node_t *next_node =
4471                     uu_list_next(fspset->fsps_list, node);
4472                 fs_perm_t *fsperm = &node->fspn_fsperm;
4473                 fs_perm_fini(fsperm);
4474                 uu_list_remove(fspset->fsps_list, node);
4475                 free(node);
4476                 node = next_node;
4477         }
4478
4479         uu_avl_pool_destroy(fspset->fsps_named_set_avl_pool);
4480         uu_avl_pool_destroy(fspset->fsps_who_perm_avl_pool);
4481         uu_avl_pool_destroy(fspset->fsps_deleg_perm_avl_pool);
4482 }
4483
4484 static inline void
4485 deleg_perm_init(deleg_perm_t *deleg_perm, zfs_deleg_who_type_t type,
4486     const char *name)
4487 {
4488         deleg_perm->dp_who_type = type;
4489         deleg_perm->dp_name = name;
4490 }
4491
4492 static inline void
4493 who_perm_init(who_perm_t *who_perm, fs_perm_t *fsperm,
4494     zfs_deleg_who_type_t type, const char *name)
4495 {
4496         uu_avl_pool_t   *pool;
4497         pool = fsperm->fsp_set->fsps_deleg_perm_avl_pool;
4498
4499         bzero(who_perm, sizeof (who_perm_t));
4500
4501         if ((who_perm->who_deleg_perm_avl = uu_avl_create(pool, NULL,
4502             UU_DEFAULT)) == NULL)
4503                 nomem();
4504
4505         who_perm->who_type = type;
4506         who_perm->who_name = name;
4507         who_perm->who_fsperm = fsperm;
4508 }
4509
4510 static inline void
4511 who_perm_fini(who_perm_t *who_perm)
4512 {
4513         deleg_perm_node_t *node = uu_avl_first(who_perm->who_deleg_perm_avl);
4514
4515         while (node != NULL) {
4516                 deleg_perm_node_t *next_node =
4517                     uu_avl_next(who_perm->who_deleg_perm_avl, node);
4518
4519                 uu_avl_remove(who_perm->who_deleg_perm_avl, node);
4520                 free(node);
4521                 node = next_node;
4522         }
4523
4524         uu_avl_destroy(who_perm->who_deleg_perm_avl);
4525 }
4526
4527 static inline void
4528 fs_perm_init(fs_perm_t *fsperm, fs_perm_set_t *fspset, const char *fsname)
4529 {
4530         uu_avl_pool_t   *nset_pool = fspset->fsps_named_set_avl_pool;
4531         uu_avl_pool_t   *who_pool = fspset->fsps_who_perm_avl_pool;
4532
4533         bzero(fsperm, sizeof (fs_perm_t));
4534
4535         if ((fsperm->fsp_sc_avl = uu_avl_create(nset_pool, NULL, UU_DEFAULT))
4536             == NULL)
4537                 nomem();
4538
4539         if ((fsperm->fsp_uge_avl = uu_avl_create(who_pool, NULL, UU_DEFAULT))
4540             == NULL)
4541                 nomem();
4542
4543         fsperm->fsp_set = fspset;
4544         fsperm->fsp_name = fsname;
4545 }
4546
4547 static inline void
4548 fs_perm_fini(fs_perm_t *fsperm)
4549 {
4550         who_perm_node_t *node = uu_avl_first(fsperm->fsp_sc_avl);
4551         while (node != NULL) {
4552                 who_perm_node_t *next_node = uu_avl_next(fsperm->fsp_sc_avl,
4553                     node);
4554                 who_perm_t *who_perm = &node->who_perm;
4555                 who_perm_fini(who_perm);
4556                 uu_avl_remove(fsperm->fsp_sc_avl, node);
4557                 free(node);
4558                 node = next_node;
4559         }
4560
4561         node = uu_avl_first(fsperm->fsp_uge_avl);
4562         while (node != NULL) {
4563                 who_perm_node_t *next_node = uu_avl_next(fsperm->fsp_uge_avl,
4564                     node);
4565                 who_perm_t *who_perm = &node->who_perm;
4566                 who_perm_fini(who_perm);
4567                 uu_avl_remove(fsperm->fsp_uge_avl, node);
4568                 free(node);
4569                 node = next_node;
4570         }
4571
4572         uu_avl_destroy(fsperm->fsp_sc_avl);
4573         uu_avl_destroy(fsperm->fsp_uge_avl);
4574 }
4575
4576 static void
4577 set_deleg_perm_node(uu_avl_t *avl, deleg_perm_node_t *node,
4578     zfs_deleg_who_type_t who_type, const char *name, char locality)
4579 {
4580         uu_avl_index_t idx = 0;
4581
4582         deleg_perm_node_t *found_node = NULL;
4583         deleg_perm_t    *deleg_perm = &node->dpn_perm;
4584
4585         deleg_perm_init(deleg_perm, who_type, name);
4586
4587         if ((found_node = uu_avl_find(avl, node, NULL, &idx))
4588             == NULL)
4589                 uu_avl_insert(avl, node, idx);
4590         else {
4591                 node = found_node;
4592                 deleg_perm = &node->dpn_perm;
4593         }
4594
4595
4596         switch (locality) {
4597         case ZFS_DELEG_LOCAL:
4598                 deleg_perm->dp_local = B_TRUE;
4599                 break;
4600         case ZFS_DELEG_DESCENDENT:
4601                 deleg_perm->dp_descend = B_TRUE;
4602                 break;
4603         case ZFS_DELEG_NA:
4604                 break;
4605         default:
4606                 assert(B_FALSE); /* invalid locality */
4607         }
4608 }
4609
4610 static inline int
4611 parse_who_perm(who_perm_t *who_perm, nvlist_t *nvl, char locality)
4612 {
4613         nvpair_t *nvp = NULL;
4614         fs_perm_set_t *fspset = who_perm->who_fsperm->fsp_set;
4615         uu_avl_t *avl = who_perm->who_deleg_perm_avl;
4616         zfs_deleg_who_type_t who_type = who_perm->who_type;
4617
4618         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4619                 const char *name = nvpair_name(nvp);
4620                 data_type_t type = nvpair_type(nvp);
4621                 uu_avl_pool_t *avl_pool = fspset->fsps_deleg_perm_avl_pool;
4622                 deleg_perm_node_t *node =
4623                     safe_malloc(sizeof (deleg_perm_node_t));
4624
4625                 VERIFY(type == DATA_TYPE_BOOLEAN);
4626
4627                 uu_avl_node_init(node, &node->dpn_avl_node, avl_pool);
4628                 set_deleg_perm_node(avl, node, who_type, name, locality);
4629         }
4630
4631         return (0);
4632 }
4633
4634 static inline int
4635 parse_fs_perm(fs_perm_t *fsperm, nvlist_t *nvl)
4636 {
4637         nvpair_t *nvp = NULL;
4638         fs_perm_set_t *fspset = fsperm->fsp_set;
4639
4640         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4641                 nvlist_t *nvl2 = NULL;
4642                 const char *name = nvpair_name(nvp);
4643                 uu_avl_t *avl = NULL;
4644                 uu_avl_pool_t *avl_pool = NULL;
4645                 zfs_deleg_who_type_t perm_type = name[0];
4646                 char perm_locality = name[1];
4647                 const char *perm_name = name + 3;
4648                 boolean_t is_set = B_TRUE;
4649                 who_perm_t *who_perm = NULL;
4650
4651                 assert('$' == name[2]);
4652
4653                 if (nvpair_value_nvlist(nvp, &nvl2) != 0)
4654                         return (-1);
4655
4656                 switch (perm_type) {
4657                 case ZFS_DELEG_CREATE:
4658                 case ZFS_DELEG_CREATE_SETS:
4659                 case ZFS_DELEG_NAMED_SET:
4660                 case ZFS_DELEG_NAMED_SET_SETS:
4661                         avl_pool = fspset->fsps_named_set_avl_pool;
4662                         avl = fsperm->fsp_sc_avl;
4663                         break;
4664                 case ZFS_DELEG_USER:
4665                 case ZFS_DELEG_USER_SETS:
4666                 case ZFS_DELEG_GROUP:
4667                 case ZFS_DELEG_GROUP_SETS:
4668                 case ZFS_DELEG_EVERYONE:
4669                 case ZFS_DELEG_EVERYONE_SETS:
4670                         avl_pool = fspset->fsps_who_perm_avl_pool;
4671                         avl = fsperm->fsp_uge_avl;
4672                         break;
4673
4674                 default:
4675                         assert(!"unhandled zfs_deleg_who_type_t");
4676                 }
4677
4678                 if (is_set) {
4679                         who_perm_node_t *found_node = NULL;
4680                         who_perm_node_t *node = safe_malloc(
4681                             sizeof (who_perm_node_t));
4682                         who_perm = &node->who_perm;
4683                         uu_avl_index_t idx = 0;
4684
4685                         uu_avl_node_init(node, &node->who_avl_node, avl_pool);
4686                         who_perm_init(who_perm, fsperm, perm_type, perm_name);
4687
4688                         if ((found_node = uu_avl_find(avl, node, NULL, &idx))
4689                             == NULL) {
4690                                 if (avl == fsperm->fsp_uge_avl) {
4691                                         uid_t rid = 0;
4692                                         struct passwd *p = NULL;
4693                                         struct group *g = NULL;
4694                                         const char *nice_name = NULL;
4695
4696                                         switch (perm_type) {
4697                                         case ZFS_DELEG_USER_SETS:
4698                                         case ZFS_DELEG_USER:
4699                                                 rid = atoi(perm_name);
4700                                                 p = getpwuid(rid);
4701                                                 if (p)
4702                                                         nice_name = p->pw_name;
4703                                                 break;
4704                                         case ZFS_DELEG_GROUP_SETS:
4705                                         case ZFS_DELEG_GROUP:
4706                                                 rid = atoi(perm_name);
4707                                                 g = getgrgid(rid);
4708                                                 if (g)
4709                                                         nice_name = g->gr_name;
4710                                                 break;
4711
4712                                         default:
4713                                                 break;
4714                                         }
4715
4716                                         if (nice_name != NULL)
4717                                                 (void) strlcpy(
4718                                                     node->who_perm.who_ug_name,
4719                                                     nice_name, 256);
4720                                 }
4721
4722                                 uu_avl_insert(avl, node, idx);
4723                         } else {
4724                                 node = found_node;
4725                                 who_perm = &node->who_perm;
4726                         }
4727                 }
4728                 VERIFY3P(who_perm, !=, NULL);
4729                 (void) parse_who_perm(who_perm, nvl2, perm_locality);
4730         }
4731
4732         return (0);
4733 }
4734
4735 static inline int
4736 parse_fs_perm_set(fs_perm_set_t *fspset, nvlist_t *nvl)
4737 {
4738         nvpair_t *nvp = NULL;
4739         uu_avl_index_t idx = 0;
4740
4741         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4742                 nvlist_t *nvl2 = NULL;
4743                 const char *fsname = nvpair_name(nvp);
4744                 data_type_t type = nvpair_type(nvp);
4745                 fs_perm_t *fsperm = NULL;
4746                 fs_perm_node_t *node = safe_malloc(sizeof (fs_perm_node_t));
4747                 if (node == NULL)
4748                         nomem();
4749
4750                 fsperm = &node->fspn_fsperm;
4751
4752                 VERIFY(DATA_TYPE_NVLIST == type);
4753
4754                 uu_list_node_init(node, &node->fspn_list_node,
4755                     fspset->fsps_list_pool);
4756
4757                 idx = uu_list_numnodes(fspset->fsps_list);
4758                 fs_perm_init(fsperm, fspset, fsname);
4759
4760                 if (nvpair_value_nvlist(nvp, &nvl2) != 0)
4761                         return (-1);
4762
4763                 (void) parse_fs_perm(fsperm, nvl2);
4764
4765                 uu_list_insert(fspset->fsps_list, node, idx);
4766         }
4767
4768         return (0);
4769 }
4770
4771 static inline const char *
4772 deleg_perm_comment(zfs_deleg_note_t note)
4773 {
4774         const char *str = "";
4775
4776         /* subcommands */
4777         switch (note) {
4778                 /* SUBCOMMANDS */
4779         case ZFS_DELEG_NOTE_ALLOW:
4780                 str = gettext("Must also have the permission that is being"
4781                     "\n\t\t\t\tallowed");
4782                 break;
4783         case ZFS_DELEG_NOTE_CLONE:
4784                 str = gettext("Must also have the 'create' ability and 'mount'"
4785                     "\n\t\t\t\tability in the origin file system");
4786                 break;
4787         case ZFS_DELEG_NOTE_CREATE:
4788                 str = gettext("Must also have the 'mount' ability");
4789                 break;
4790         case ZFS_DELEG_NOTE_DESTROY:
4791                 str = gettext("Must also have the 'mount' ability");
4792                 break;
4793         case ZFS_DELEG_NOTE_DIFF:
4794                 str = gettext("Allows lookup of paths within a dataset;"
4795                     "\n\t\t\t\tgiven an object number. Ordinary users need this"
4796                     "\n\t\t\t\tin order to use zfs diff");
4797                 break;
4798         case ZFS_DELEG_NOTE_HOLD:
4799                 str = gettext("Allows adding a user hold to a snapshot");
4800                 break;
4801         case ZFS_DELEG_NOTE_MOUNT:
4802                 str = gettext("Allows mount/umount of ZFS datasets");
4803                 break;
4804         case ZFS_DELEG_NOTE_PROMOTE:
4805                 str = gettext("Must also have the 'mount'\n\t\t\t\tand"
4806                     " 'promote' ability in the origin file system");
4807                 break;
4808         case ZFS_DELEG_NOTE_RECEIVE:
4809                 str = gettext("Must also have the 'mount' and 'create'"
4810                     " ability");
4811                 break;
4812         case ZFS_DELEG_NOTE_RELEASE:
4813                 str = gettext("Allows releasing a user hold which\n\t\t\t\t"
4814                     "might destroy the snapshot");
4815                 break;
4816         case ZFS_DELEG_NOTE_RENAME:
4817                 str = gettext("Must also have the 'mount' and 'create'"
4818                     "\n\t\t\t\tability in the new parent");
4819                 break;
4820         case ZFS_DELEG_NOTE_ROLLBACK:
4821                 str = gettext("");
4822                 break;
4823         case ZFS_DELEG_NOTE_SEND:
4824                 str = gettext("");
4825                 break;
4826         case ZFS_DELEG_NOTE_SHARE:
4827                 str = gettext("Allows sharing file systems over NFS or SMB"
4828                     "\n\t\t\t\tprotocols");
4829                 break;
4830         case ZFS_DELEG_NOTE_SNAPSHOT:
4831                 str = gettext("");
4832                 break;
4833 /*
4834  *      case ZFS_DELEG_NOTE_VSCAN:
4835  *              str = gettext("");
4836  *              break;
4837  */
4838                 /* OTHER */
4839         case ZFS_DELEG_NOTE_GROUPQUOTA:
4840                 str = gettext("Allows accessing any groupquota@... property");
4841                 break;
4842         case ZFS_DELEG_NOTE_GROUPUSED:
4843                 str = gettext("Allows reading any groupused@... property");
4844                 break;
4845         case ZFS_DELEG_NOTE_USERPROP:
4846                 str = gettext("Allows changing any user property");
4847                 break;
4848         case ZFS_DELEG_NOTE_USERQUOTA:
4849                 str = gettext("Allows accessing any userquota@... property");
4850                 break;
4851         case ZFS_DELEG_NOTE_USERUSED:
4852                 str = gettext("Allows reading any userused@... property");
4853                 break;
4854         case ZFS_DELEG_NOTE_USEROBJQUOTA:
4855                 str = gettext("Allows accessing any userobjquota@... property");
4856                 break;
4857         case ZFS_DELEG_NOTE_GROUPOBJQUOTA:
4858                 str = gettext("Allows accessing any \n\t\t\t\t"
4859                     "groupobjquota@... property");
4860                 break;
4861         case ZFS_DELEG_NOTE_GROUPOBJUSED:
4862                 str = gettext("Allows reading any groupobjused@... property");
4863                 break;
4864         case ZFS_DELEG_NOTE_USEROBJUSED:
4865                 str = gettext("Allows reading any userobjused@... property");
4866                 break;
4867                 /* other */
4868         default:
4869                 str = "";
4870         }
4871
4872         return (str);
4873 }
4874
4875 struct allow_opts {
4876         boolean_t local;
4877         boolean_t descend;
4878         boolean_t user;
4879         boolean_t group;
4880         boolean_t everyone;
4881         boolean_t create;
4882         boolean_t set;
4883         boolean_t recursive; /* unallow only */
4884         boolean_t prt_usage;
4885
4886         boolean_t prt_perms;
4887         char *who;
4888         char *perms;
4889         const char *dataset;
4890 };
4891
4892 static inline int
4893 prop_cmp(const void *a, const void *b)
4894 {
4895         const char *str1 = *(const char **)a;
4896         const char *str2 = *(const char **)b;
4897         return (strcmp(str1, str2));
4898 }
4899
4900 static void
4901 allow_usage(boolean_t un, boolean_t requested, const char *msg)
4902 {
4903         const char *opt_desc[] = {
4904                 "-h", gettext("show this help message and exit"),
4905                 "-l", gettext("set permission locally"),
4906                 "-d", gettext("set permission for descents"),
4907                 "-u", gettext("set permission for user"),
4908                 "-g", gettext("set permission for group"),
4909                 "-e", gettext("set permission for everyone"),
4910                 "-c", gettext("set create time permission"),
4911                 "-s", gettext("define permission set"),
4912                 /* unallow only */
4913                 "-r", gettext("remove permissions recursively"),
4914         };
4915         size_t unallow_size = sizeof (opt_desc) / sizeof (char *);
4916         size_t allow_size = unallow_size - 2;
4917         const char *props[ZFS_NUM_PROPS];
4918         int i;
4919         size_t count = 0;
4920         FILE *fp = requested ? stdout : stderr;
4921         zprop_desc_t *pdtbl = zfs_prop_get_table();
4922         const char *fmt = gettext("%-16s %-14s\t%s\n");
4923
4924         (void) fprintf(fp, gettext("Usage: %s\n"), get_usage(un ? HELP_UNALLOW :
4925             HELP_ALLOW));
4926         (void) fprintf(fp, gettext("Options:\n"));
4927         for (i = 0; i < (un ? unallow_size : allow_size); i += 2) {
4928                 const char *opt = opt_desc[i];
4929                 const char *optdsc = opt_desc[i + 1];
4930                 (void) fprintf(fp, gettext("  %-10s  %s\n"), opt, optdsc);
4931         }
4932
4933         (void) fprintf(fp, gettext("\nThe following permissions are "
4934             "supported:\n\n"));
4935         (void) fprintf(fp, fmt, gettext("NAME"), gettext("TYPE"),
4936             gettext("NOTES"));
4937         for (i = 0; i < ZFS_NUM_DELEG_NOTES; i++) {
4938                 const char *perm_name = zfs_deleg_perm_tbl[i].z_perm;
4939                 zfs_deleg_note_t perm_note = zfs_deleg_perm_tbl[i].z_note;
4940                 const char *perm_type = deleg_perm_type(perm_note);
4941                 const char *perm_comment = deleg_perm_comment(perm_note);
4942                 (void) fprintf(fp, fmt, perm_name, perm_type, perm_comment);
4943         }
4944
4945         for (i = 0; i < ZFS_NUM_PROPS; i++) {
4946                 zprop_desc_t *pd = &pdtbl[i];
4947                 if (pd->pd_visible != B_TRUE)
4948                         continue;
4949
4950                 if (pd->pd_attr == PROP_READONLY)
4951                         continue;
4952
4953                 props[count++] = pd->pd_name;
4954         }
4955         props[count] = NULL;
4956
4957         qsort(props, count, sizeof (char *), prop_cmp);
4958
4959         for (i = 0; i < count; i++)
4960                 (void) fprintf(fp, fmt, props[i], gettext("property"), "");
4961
4962         if (msg != NULL)
4963                 (void) fprintf(fp, gettext("\nzfs: error: %s"), msg);
4964
4965         exit(requested ? 0 : 2);
4966 }
4967
4968 static inline const char *
4969 munge_args(int argc, char **argv, boolean_t un, size_t expected_argc,
4970     char **permsp)
4971 {
4972         if (un && argc == expected_argc - 1)
4973                 *permsp = NULL;
4974         else if (argc == expected_argc)
4975                 *permsp = argv[argc - 2];
4976         else
4977                 allow_usage(un, B_FALSE,
4978                     gettext("wrong number of parameters\n"));
4979
4980         return (argv[argc - 1]);
4981 }
4982
4983 static void
4984 parse_allow_args(int argc, char **argv, boolean_t un, struct allow_opts *opts)
4985 {
4986         int uge_sum = opts->user + opts->group + opts->everyone;
4987         int csuge_sum = opts->create + opts->set + uge_sum;
4988         int ldcsuge_sum = csuge_sum + opts->local + opts->descend;
4989         int all_sum = un ? ldcsuge_sum + opts->recursive : ldcsuge_sum;
4990
4991         if (uge_sum > 1)
4992                 allow_usage(un, B_FALSE,
4993                     gettext("-u, -g, and -e are mutually exclusive\n"));
4994
4995         if (opts->prt_usage) {
4996                 if (argc == 0 && all_sum == 0)
4997                         allow_usage(un, B_TRUE, NULL);
4998                 else
4999                         usage(B_FALSE);
5000         }
5001
5002         if (opts->set) {
5003                 if (csuge_sum > 1)
5004                         allow_usage(un, B_FALSE,
5005                             gettext("invalid options combined with -s\n"));
5006
5007                 opts->dataset = munge_args(argc, argv, un, 3, &opts->perms);
5008                 if (argv[0][0] != '@')
5009                         allow_usage(un, B_FALSE,
5010                             gettext("invalid set name: missing '@' prefix\n"));
5011                 opts->who = argv[0];
5012         } else if (opts->create) {
5013                 if (ldcsuge_sum > 1)
5014                         allow_usage(un, B_FALSE,
5015                             gettext("invalid options combined with -c\n"));
5016                 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
5017         } else if (opts->everyone) {
5018                 if (csuge_sum > 1)
5019                         allow_usage(un, B_FALSE,
5020                             gettext("invalid options combined with -e\n"));
5021                 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
5022         } else if (uge_sum == 0 && argc > 0 && strcmp(argv[0], "everyone")
5023             == 0) {
5024                 opts->everyone = B_TRUE;
5025                 argc--;
5026                 argv++;
5027                 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
5028         } else if (argc == 1 && !un) {
5029                 opts->prt_perms = B_TRUE;
5030                 opts->dataset = argv[argc-1];
5031         } else {
5032                 opts->dataset = munge_args(argc, argv, un, 3, &opts->perms);
5033                 opts->who = argv[0];
5034         }
5035
5036         if (!opts->local && !opts->descend) {
5037                 opts->local = B_TRUE;
5038                 opts->descend = B_TRUE;
5039         }
5040 }
5041
5042 static void
5043 store_allow_perm(zfs_deleg_who_type_t type, boolean_t local, boolean_t descend,
5044     const char *who, char *perms, nvlist_t *top_nvl)
5045 {
5046         int i;
5047         char ld[2] = { '\0', '\0' };
5048         char who_buf[MAXNAMELEN + 32];
5049         char base_type = '\0';
5050         char set_type = '\0';
5051         nvlist_t *base_nvl = NULL;
5052         nvlist_t *set_nvl = NULL;
5053         nvlist_t *nvl;
5054
5055         if (nvlist_alloc(&base_nvl, NV_UNIQUE_NAME, 0) != 0)
5056                 nomem();
5057         if (nvlist_alloc(&set_nvl, NV_UNIQUE_NAME, 0) !=  0)
5058                 nomem();
5059
5060         switch (type) {
5061         case ZFS_DELEG_NAMED_SET_SETS:
5062         case ZFS_DELEG_NAMED_SET:
5063                 set_type = ZFS_DELEG_NAMED_SET_SETS;
5064                 base_type = ZFS_DELEG_NAMED_SET;
5065                 ld[0] = ZFS_DELEG_NA;
5066                 break;
5067         case ZFS_DELEG_CREATE_SETS:
5068         case ZFS_DELEG_CREATE:
5069                 set_type = ZFS_DELEG_CREATE_SETS;
5070                 base_type = ZFS_DELEG_CREATE;
5071                 ld[0] = ZFS_DELEG_NA;
5072                 break;
5073         case ZFS_DELEG_USER_SETS:
5074         case ZFS_DELEG_USER:
5075                 set_type = ZFS_DELEG_USER_SETS;
5076                 base_type = ZFS_DELEG_USER;
5077                 if (local)
5078                         ld[0] = ZFS_DELEG_LOCAL;
5079                 if (descend)
5080                         ld[1] = ZFS_DELEG_DESCENDENT;
5081                 break;
5082         case ZFS_DELEG_GROUP_SETS:
5083         case ZFS_DELEG_GROUP:
5084                 set_type = ZFS_DELEG_GROUP_SETS;
5085                 base_type = ZFS_DELEG_GROUP;
5086                 if (local)
5087                         ld[0] = ZFS_DELEG_LOCAL;
5088                 if (descend)
5089                         ld[1] = ZFS_DELEG_DESCENDENT;
5090                 break;
5091         case ZFS_DELEG_EVERYONE_SETS:
5092         case ZFS_DELEG_EVERYONE:
5093                 set_type = ZFS_DELEG_EVERYONE_SETS;
5094                 base_type = ZFS_DELEG_EVERYONE;
5095                 if (local)
5096                         ld[0] = ZFS_DELEG_LOCAL;
5097                 if (descend)
5098                         ld[1] = ZFS_DELEG_DESCENDENT;
5099                 break;
5100
5101         default:
5102                 assert(set_type != '\0' && base_type != '\0');
5103         }
5104
5105         if (perms != NULL) {
5106                 char *curr = perms;
5107                 char *end = curr + strlen(perms);
5108
5109                 while (curr < end) {
5110                         char *delim = strchr(curr, ',');
5111                         if (delim == NULL)
5112                                 delim = end;
5113                         else
5114                                 *delim = '\0';
5115
5116                         if (curr[0] == '@')
5117                                 nvl = set_nvl;
5118                         else
5119                                 nvl = base_nvl;
5120
5121                         (void) nvlist_add_boolean(nvl, curr);
5122                         if (delim != end)
5123                                 *delim = ',';
5124                         curr = delim + 1;
5125                 }
5126
5127                 for (i = 0; i < 2; i++) {
5128                         char locality = ld[i];
5129                         if (locality == 0)
5130                                 continue;
5131
5132                         if (!nvlist_empty(base_nvl)) {
5133                                 if (who != NULL)
5134                                         (void) snprintf(who_buf,
5135                                             sizeof (who_buf), "%c%c$%s",
5136                                             base_type, locality, who);
5137                                 else
5138                                         (void) snprintf(who_buf,
5139                                             sizeof (who_buf), "%c%c$",
5140                                             base_type, locality);
5141
5142                                 (void) nvlist_add_nvlist(top_nvl, who_buf,
5143                                     base_nvl);
5144                         }
5145
5146
5147                         if (!nvlist_empty(set_nvl)) {
5148                                 if (who != NULL)
5149                                         (void) snprintf(who_buf,
5150                                             sizeof (who_buf), "%c%c$%s",
5151                                             set_type, locality, who);
5152                                 else
5153                                         (void) snprintf(who_buf,
5154                                             sizeof (who_buf), "%c%c$",
5155                                             set_type, locality);
5156
5157                                 (void) nvlist_add_nvlist(top_nvl, who_buf,
5158                                     set_nvl);
5159                         }
5160                 }
5161         } else {
5162                 for (i = 0; i < 2; i++) {
5163                         char locality = ld[i];
5164                         if (locality == 0)
5165                                 continue;
5166
5167                         if (who != NULL)
5168                                 (void) snprintf(who_buf, sizeof (who_buf),
5169                                     "%c%c$%s", base_type, locality, who);
5170                         else
5171                                 (void) snprintf(who_buf, sizeof (who_buf),
5172                                     "%c%c$", base_type, locality);
5173                         (void) nvlist_add_boolean(top_nvl, who_buf);
5174
5175                         if (who != NULL)
5176                                 (void) snprintf(who_buf, sizeof (who_buf),
5177                                     "%c%c$%s", set_type, locality, who);
5178                         else
5179                                 (void) snprintf(who_buf, sizeof (who_buf),
5180                                     "%c%c$", set_type, locality);
5181                         (void) nvlist_add_boolean(top_nvl, who_buf);
5182                 }
5183         }
5184 }
5185
5186 static int
5187 construct_fsacl_list(boolean_t un, struct allow_opts *opts, nvlist_t **nvlp)
5188 {
5189         if (nvlist_alloc(nvlp, NV_UNIQUE_NAME, 0) != 0)
5190                 nomem();
5191
5192         if (opts->set) {
5193                 store_allow_perm(ZFS_DELEG_NAMED_SET, opts->local,
5194                     opts->descend, opts->who, opts->perms, *nvlp);
5195         } else if (opts->create) {
5196                 store_allow_perm(ZFS_DELEG_CREATE, opts->local,
5197                     opts->descend, NULL, opts->perms, *nvlp);
5198         } else if (opts->everyone) {
5199                 store_allow_perm(ZFS_DELEG_EVERYONE, opts->local,
5200                     opts->descend, NULL, opts->perms, *nvlp);
5201         } else {
5202                 char *curr = opts->who;
5203                 char *end = curr + strlen(curr);
5204
5205                 while (curr < end) {
5206                         const char *who;
5207                         zfs_deleg_who_type_t who_type = ZFS_DELEG_WHO_UNKNOWN;
5208                         char *endch;
5209                         char *delim = strchr(curr, ',');
5210                         char errbuf[256];
5211                         char id[64];
5212                         struct passwd *p = NULL;
5213                         struct group *g = NULL;
5214
5215                         uid_t rid;
5216                         if (delim == NULL)
5217                                 delim = end;
5218                         else
5219                                 *delim = '\0';
5220
5221                         rid = (uid_t)strtol(curr, &endch, 0);
5222                         if (opts->user) {
5223                                 who_type = ZFS_DELEG_USER;
5224                                 if (*endch != '\0')
5225                                         p = getpwnam(curr);
5226                                 else
5227                                         p = getpwuid(rid);
5228
5229                                 if (p != NULL)
5230                                         rid = p->pw_uid;
5231                                 else {
5232                                         (void) snprintf(errbuf, 256, gettext(
5233                                             "invalid user %s"), curr);
5234                                         allow_usage(un, B_TRUE, errbuf);
5235                                 }
5236                         } else if (opts->group) {
5237                                 who_type = ZFS_DELEG_GROUP;
5238                                 if (*endch != '\0')
5239                                         g = getgrnam(curr);
5240                                 else
5241                                         g = getgrgid(rid);
5242
5243                                 if (g != NULL)
5244                                         rid = g->gr_gid;
5245                                 else {
5246                                         (void) snprintf(errbuf, 256, gettext(
5247                                             "invalid group %s"),  curr);
5248                                         allow_usage(un, B_TRUE, errbuf);
5249                                 }
5250                         } else {
5251                                 if (*endch != '\0') {
5252                                         p = getpwnam(curr);
5253                                 } else {
5254                                         p = getpwuid(rid);
5255                                 }
5256
5257                                 if (p == NULL) {
5258                                         if (*endch != '\0') {
5259                                                 g = getgrnam(curr);
5260                                         } else {
5261                                                 g = getgrgid(rid);
5262                                         }
5263                                 }
5264
5265                                 if (p != NULL) {
5266                                         who_type = ZFS_DELEG_USER;
5267                                         rid = p->pw_uid;
5268                                 } else if (g != NULL) {
5269                                         who_type = ZFS_DELEG_GROUP;
5270                                         rid = g->gr_gid;
5271                                 } else {
5272                                         (void) snprintf(errbuf, 256, gettext(
5273                                             "invalid user/group %s"), curr);
5274                                         allow_usage(un, B_TRUE, errbuf);
5275                                 }
5276                         }
5277
5278                         (void) sprintf(id, "%u", rid);
5279                         who = id;
5280
5281                         store_allow_perm(who_type, opts->local,
5282                             opts->descend, who, opts->perms, *nvlp);
5283                         curr = delim + 1;
5284                 }
5285         }
5286
5287         return (0);
5288 }
5289
5290 static void
5291 print_set_creat_perms(uu_avl_t *who_avl)
5292 {
5293         const char *sc_title[] = {
5294                 gettext("Permission sets:\n"),
5295                 gettext("Create time permissions:\n"),
5296                 NULL
5297         };
5298         const char **title_ptr = sc_title;
5299         who_perm_node_t *who_node = NULL;
5300         int prev_weight = -1;
5301
5302         for (who_node = uu_avl_first(who_avl); who_node != NULL;
5303             who_node = uu_avl_next(who_avl, who_node)) {
5304                 uu_avl_t *avl = who_node->who_perm.who_deleg_perm_avl;
5305                 zfs_deleg_who_type_t who_type = who_node->who_perm.who_type;
5306                 const char *who_name = who_node->who_perm.who_name;
5307                 int weight = who_type2weight(who_type);
5308                 boolean_t first = B_TRUE;
5309                 deleg_perm_node_t *deleg_node;
5310
5311                 if (prev_weight != weight) {
5312                         (void) printf("%s", *title_ptr++);
5313                         prev_weight = weight;
5314                 }
5315
5316                 if (who_name == NULL || strnlen(who_name, 1) == 0)
5317                         (void) printf("\t");
5318                 else
5319                         (void) printf("\t%s ", who_name);
5320
5321                 for (deleg_node = uu_avl_first(avl); deleg_node != NULL;
5322                     deleg_node = uu_avl_next(avl, deleg_node)) {
5323                         if (first) {
5324                                 (void) printf("%s",
5325                                     deleg_node->dpn_perm.dp_name);
5326                                 first = B_FALSE;
5327                         } else
5328                                 (void) printf(",%s",
5329                                     deleg_node->dpn_perm.dp_name);
5330                 }
5331
5332                 (void) printf("\n");
5333         }
5334 }
5335
5336 static void
5337 print_uge_deleg_perms(uu_avl_t *who_avl, boolean_t local, boolean_t descend,
5338     const char *title)
5339 {
5340         who_perm_node_t *who_node = NULL;
5341         boolean_t prt_title = B_TRUE;
5342         uu_avl_walk_t *walk;
5343
5344         if ((walk = uu_avl_walk_start(who_avl, UU_WALK_ROBUST)) == NULL)
5345                 nomem();
5346
5347         while ((who_node = uu_avl_walk_next(walk)) != NULL) {
5348                 const char *who_name = who_node->who_perm.who_name;
5349                 const char *nice_who_name = who_node->who_perm.who_ug_name;
5350                 uu_avl_t *avl = who_node->who_perm.who_deleg_perm_avl;
5351                 zfs_deleg_who_type_t who_type = who_node->who_perm.who_type;
5352                 char delim = ' ';
5353                 deleg_perm_node_t *deleg_node;
5354                 boolean_t prt_who = B_TRUE;
5355
5356                 for (deleg_node = uu_avl_first(avl);
5357                     deleg_node != NULL;
5358                     deleg_node = uu_avl_next(avl, deleg_node)) {
5359                         if (local != deleg_node->dpn_perm.dp_local ||
5360                             descend != deleg_node->dpn_perm.dp_descend)
5361                                 continue;
5362
5363                         if (prt_who) {
5364                                 const char *who = NULL;
5365                                 if (prt_title) {
5366                                         prt_title = B_FALSE;
5367                                         (void) printf("%s", title);
5368                                 }
5369
5370                                 switch (who_type) {
5371                                 case ZFS_DELEG_USER_SETS:
5372                                 case ZFS_DELEG_USER:
5373                                         who = gettext("user");
5374                                         if (nice_who_name)
5375                                                 who_name  = nice_who_name;
5376                                         break;
5377                                 case ZFS_DELEG_GROUP_SETS:
5378                                 case ZFS_DELEG_GROUP:
5379                                         who = gettext("group");
5380                                         if (nice_who_name)
5381                                                 who_name  = nice_who_name;
5382                                         break;
5383                                 case ZFS_DELEG_EVERYONE_SETS:
5384                                 case ZFS_DELEG_EVERYONE:
5385                                         who = gettext("everyone");
5386                                         who_name = NULL;
5387                                         break;
5388
5389                                 default:
5390                                         assert(who != NULL);
5391                                 }
5392
5393                                 prt_who = B_FALSE;
5394                                 if (who_name == NULL)
5395                                         (void) printf("\t%s", who);
5396                                 else
5397                                         (void) printf("\t%s %s", who, who_name);
5398                         }
5399
5400                         (void) printf("%c%s", delim,
5401                             deleg_node->dpn_perm.dp_name);
5402                         delim = ',';
5403                 }
5404
5405                 if (!prt_who)
5406                         (void) printf("\n");
5407         }
5408
5409         uu_avl_walk_end(walk);
5410 }
5411
5412 static void
5413 print_fs_perms(fs_perm_set_t *fspset)
5414 {
5415         fs_perm_node_t *node = NULL;
5416         char buf[MAXNAMELEN + 32];
5417         const char *dsname = buf;
5418
5419         for (node = uu_list_first(fspset->fsps_list); node != NULL;
5420             node = uu_list_next(fspset->fsps_list, node)) {
5421                 uu_avl_t *sc_avl = node->fspn_fsperm.fsp_sc_avl;
5422                 uu_avl_t *uge_avl = node->fspn_fsperm.fsp_uge_avl;
5423                 int left = 0;
5424
5425                 (void) snprintf(buf, sizeof (buf),
5426                     gettext("---- Permissions on %s "),
5427                     node->fspn_fsperm.fsp_name);
5428                 (void) printf("%s", dsname);
5429                 left = 70 - strlen(buf);
5430                 while (left-- > 0)
5431                         (void) printf("-");
5432                 (void) printf("\n");
5433
5434                 print_set_creat_perms(sc_avl);
5435                 print_uge_deleg_perms(uge_avl, B_TRUE, B_FALSE,
5436                     gettext("Local permissions:\n"));
5437                 print_uge_deleg_perms(uge_avl, B_FALSE, B_TRUE,
5438                     gettext("Descendent permissions:\n"));
5439                 print_uge_deleg_perms(uge_avl, B_TRUE, B_TRUE,
5440                     gettext("Local+Descendent permissions:\n"));
5441         }
5442 }
5443
5444 static fs_perm_set_t fs_perm_set = { NULL, NULL, NULL, NULL };
5445
5446 struct deleg_perms {
5447         boolean_t un;
5448         nvlist_t *nvl;
5449 };
5450
5451 static int
5452 set_deleg_perms(zfs_handle_t *zhp, void *data)
5453 {
5454         struct deleg_perms *perms = (struct deleg_perms *)data;
5455         zfs_type_t zfs_type = zfs_get_type(zhp);
5456
5457         if (zfs_type != ZFS_TYPE_FILESYSTEM && zfs_type != ZFS_TYPE_VOLUME)
5458                 return (0);
5459
5460         return (zfs_set_fsacl(zhp, perms->un, perms->nvl));
5461 }
5462
5463 static int
5464 zfs_do_allow_unallow_impl(int argc, char **argv, boolean_t un)
5465 {
5466         zfs_handle_t *zhp;
5467         nvlist_t *perm_nvl = NULL;
5468         nvlist_t *update_perm_nvl = NULL;
5469         int error = 1;
5470         int c;
5471         struct allow_opts opts = { 0 };
5472
5473         const char *optstr = un ? "ldugecsrh" : "ldugecsh";
5474
5475         /* check opts */
5476         while ((c = getopt(argc, argv, optstr)) != -1) {
5477                 switch (c) {
5478                 case 'l':
5479                         opts.local = B_TRUE;
5480                         break;
5481                 case 'd':
5482                         opts.descend = B_TRUE;
5483                         break;
5484                 case 'u':
5485                         opts.user = B_TRUE;
5486                         break;
5487                 case 'g':
5488                         opts.group = B_TRUE;
5489                         break;
5490                 case 'e':
5491                         opts.everyone = B_TRUE;
5492                         break;
5493                 case 's':
5494                         opts.set = B_TRUE;
5495                         break;
5496                 case 'c':
5497                         opts.create = B_TRUE;
5498                         break;
5499                 case 'r':
5500                         opts.recursive = B_TRUE;
5501                         break;
5502                 case ':':
5503                         (void) fprintf(stderr, gettext("missing argument for "
5504                             "'%c' option\n"), optopt);
5505                         usage(B_FALSE);
5506                         break;
5507                 case 'h':
5508                         opts.prt_usage = B_TRUE;
5509                         break;
5510                 case '?':
5511                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5512                             optopt);
5513                         usage(B_FALSE);
5514                 }
5515         }
5516
5517         argc -= optind;
5518         argv += optind;
5519
5520         /* check arguments */
5521         parse_allow_args(argc, argv, un, &opts);
5522
5523         /* try to open the dataset */
5524         if ((zhp = zfs_open(g_zfs, opts.dataset, ZFS_TYPE_FILESYSTEM |
5525             ZFS_TYPE_VOLUME)) == NULL) {
5526                 (void) fprintf(stderr, "Failed to open dataset: %s\n",
5527                     opts.dataset);
5528                 return (-1);
5529         }
5530
5531         if (zfs_get_fsacl(zhp, &perm_nvl) != 0)
5532                 goto cleanup2;
5533
5534         fs_perm_set_init(&fs_perm_set);
5535         if (parse_fs_perm_set(&fs_perm_set, perm_nvl) != 0) {
5536                 (void) fprintf(stderr, "Failed to parse fsacl permissions\n");
5537                 goto cleanup1;
5538         }
5539
5540         if (opts.prt_perms)
5541                 print_fs_perms(&fs_perm_set);
5542         else {
5543                 (void) construct_fsacl_list(un, &opts, &update_perm_nvl);
5544                 if (zfs_set_fsacl(zhp, un, update_perm_nvl) != 0)
5545                         goto cleanup0;
5546
5547                 if (un && opts.recursive) {
5548                         struct deleg_perms data = { un, update_perm_nvl };
5549                         if (zfs_iter_filesystems(zhp, set_deleg_perms,
5550                             &data) != 0)
5551                                 goto cleanup0;
5552                 }
5553         }
5554
5555         error = 0;
5556
5557 cleanup0:
5558         nvlist_free(perm_nvl);
5559         nvlist_free(update_perm_nvl);
5560 cleanup1:
5561         fs_perm_set_fini(&fs_perm_set);
5562 cleanup2:
5563         zfs_close(zhp);
5564
5565         return (error);
5566 }
5567
5568 static int
5569 zfs_do_allow(int argc, char **argv)
5570 {
5571         return (zfs_do_allow_unallow_impl(argc, argv, B_FALSE));
5572 }
5573
5574 static int
5575 zfs_do_unallow(int argc, char **argv)
5576 {
5577         return (zfs_do_allow_unallow_impl(argc, argv, B_TRUE));
5578 }
5579
5580 static int
5581 zfs_do_hold_rele_impl(int argc, char **argv, boolean_t holding)
5582 {
5583         int errors = 0;
5584         int i;
5585         const char *tag;
5586         boolean_t recursive = B_FALSE;
5587         const char *opts = holding ? "rt" : "r";
5588         int c;
5589
5590         /* check options */
5591         while ((c = getopt(argc, argv, opts)) != -1) {
5592                 switch (c) {
5593                 case 'r':
5594                         recursive = B_TRUE;
5595                         break;
5596                 case '?':
5597                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5598                             optopt);
5599                         usage(B_FALSE);
5600                 }
5601         }
5602
5603         argc -= optind;
5604         argv += optind;
5605
5606         /* check number of arguments */
5607         if (argc < 2)
5608                 usage(B_FALSE);
5609
5610         tag = argv[0];
5611         --argc;
5612         ++argv;
5613
5614         if (holding && tag[0] == '.') {
5615                 /* tags starting with '.' are reserved for libzfs */
5616                 (void) fprintf(stderr, gettext("tag may not start with '.'\n"));
5617                 usage(B_FALSE);
5618         }
5619
5620         for (i = 0; i < argc; ++i) {
5621                 zfs_handle_t *zhp;
5622                 char parent[ZFS_MAX_DATASET_NAME_LEN];
5623                 const char *delim;
5624                 char *path = argv[i];
5625
5626                 delim = strchr(path, '@');
5627                 if (delim == NULL) {
5628                         (void) fprintf(stderr,
5629                             gettext("'%s' is not a snapshot\n"), path);
5630                         ++errors;
5631                         continue;
5632                 }
5633                 (void) strncpy(parent, path, delim - path);
5634                 parent[delim - path] = '\0';
5635
5636                 zhp = zfs_open(g_zfs, parent,
5637                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
5638                 if (zhp == NULL) {
5639                         ++errors;
5640                         continue;
5641                 }
5642                 if (holding) {
5643                         if (zfs_hold(zhp, delim+1, tag, recursive, -1) != 0)
5644                                 ++errors;
5645                 } else {
5646                         if (zfs_release(zhp, delim+1, tag, recursive) != 0)
5647                                 ++errors;
5648                 }
5649                 zfs_close(zhp);
5650         }
5651
5652         return (errors != 0);
5653 }
5654
5655 /*
5656  * zfs hold [-r] [-t] <tag> <snap> ...
5657  *
5658  *      -r      Recursively hold
5659  *
5660  * Apply a user-hold with the given tag to the list of snapshots.
5661  */
5662 static int
5663 zfs_do_hold(int argc, char **argv)
5664 {
5665         return (zfs_do_hold_rele_impl(argc, argv, B_TRUE));
5666 }
5667
5668 /*
5669  * zfs release [-r] <tag> <snap> ...
5670  *
5671  *      -r      Recursively release
5672  *
5673  * Release a user-hold with the given tag from the list of snapshots.
5674  */
5675 static int
5676 zfs_do_release(int argc, char **argv)
5677 {
5678         return (zfs_do_hold_rele_impl(argc, argv, B_FALSE));
5679 }
5680
5681 typedef struct holds_cbdata {
5682         boolean_t       cb_recursive;
5683         const char      *cb_snapname;
5684         nvlist_t        **cb_nvlp;
5685         size_t          cb_max_namelen;
5686         size_t          cb_max_taglen;
5687 } holds_cbdata_t;
5688
5689 #define STRFTIME_FMT_STR "%a %b %e %k:%M %Y"
5690 #define DATETIME_BUF_LEN (32)
5691 /*
5692  *
5693  */
5694 static void
5695 print_holds(boolean_t scripted, int nwidth, int tagwidth, nvlist_t *nvl)
5696 {
5697         int i;
5698         nvpair_t *nvp = NULL;
5699         char *hdr_cols[] = { "NAME", "TAG", "TIMESTAMP" };
5700         const char *col;
5701
5702         if (!scripted) {
5703                 for (i = 0; i < 3; i++) {
5704                         col = gettext(hdr_cols[i]);
5705                         if (i < 2)
5706                                 (void) printf("%-*s  ", i ? tagwidth : nwidth,
5707                                     col);
5708                         else
5709                                 (void) printf("%s\n", col);
5710                 }
5711         }
5712
5713         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
5714                 char *zname = nvpair_name(nvp);
5715                 nvlist_t *nvl2;
5716                 nvpair_t *nvp2 = NULL;
5717                 (void) nvpair_value_nvlist(nvp, &nvl2);
5718                 while ((nvp2 = nvlist_next_nvpair(nvl2, nvp2)) != NULL) {
5719                         char tsbuf[DATETIME_BUF_LEN];
5720                         char *tagname = nvpair_name(nvp2);
5721                         uint64_t val = 0;
5722                         time_t time;
5723                         struct tm t;
5724                         char sep = scripted ? '\t' : ' ';
5725                         int sepnum = scripted ? 1 : 2;
5726
5727                         (void) nvpair_value_uint64(nvp2, &val);
5728                         time = (time_t)val;
5729                         (void) localtime_r(&time, &t);
5730                         (void) strftime(tsbuf, DATETIME_BUF_LEN,
5731                             gettext(STRFTIME_FMT_STR), &t);
5732
5733                         (void) printf("%-*s%*c%-*s%*c%s\n", nwidth, zname,
5734                             sepnum, sep, tagwidth, tagname, sepnum, sep, tsbuf);
5735                 }
5736         }
5737 }
5738
5739 /*
5740  * Generic callback function to list a dataset or snapshot.
5741  */
5742 static int
5743 holds_callback(zfs_handle_t *zhp, void *data)
5744 {
5745         holds_cbdata_t *cbp = data;
5746         nvlist_t *top_nvl = *cbp->cb_nvlp;
5747         nvlist_t *nvl = NULL;
5748         nvpair_t *nvp = NULL;
5749         const char *zname = zfs_get_name(zhp);
5750         size_t znamelen = strlen(zname);
5751
5752         if (cbp->cb_recursive) {
5753                 const char *snapname;
5754                 char *delim  = strchr(zname, '@');
5755                 if (delim == NULL)
5756                         return (0);
5757
5758                 snapname = delim + 1;
5759                 if (strcmp(cbp->cb_snapname, snapname))
5760                         return (0);
5761         }
5762
5763         if (zfs_get_holds(zhp, &nvl) != 0)
5764                 return (-1);
5765
5766         if (znamelen > cbp->cb_max_namelen)
5767                 cbp->cb_max_namelen  = znamelen;
5768
5769         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
5770                 const char *tag = nvpair_name(nvp);
5771                 size_t taglen = strlen(tag);
5772                 if (taglen > cbp->cb_max_taglen)
5773                         cbp->cb_max_taglen  = taglen;
5774         }
5775
5776         return (nvlist_add_nvlist(top_nvl, zname, nvl));
5777 }
5778
5779 /*
5780  * zfs holds [-r] <snap> ...
5781  *
5782  *      -r      Recursively hold
5783  */
5784 static int
5785 zfs_do_holds(int argc, char **argv)
5786 {
5787         int errors = 0;
5788         int c;
5789         int i;
5790         boolean_t scripted = B_FALSE;
5791         boolean_t recursive = B_FALSE;
5792         const char *opts = "rH";
5793         nvlist_t *nvl;
5794
5795         int types = ZFS_TYPE_SNAPSHOT;
5796         holds_cbdata_t cb = { 0 };
5797
5798         int limit = 0;
5799         int ret = 0;
5800         int flags = 0;
5801
5802         /* check options */
5803         while ((c = getopt(argc, argv, opts)) != -1) {
5804                 switch (c) {
5805                 case 'r':
5806                         recursive = B_TRUE;
5807                         break;
5808                 case 'H':
5809                         scripted = B_TRUE;
5810                         break;
5811                 case '?':
5812                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5813                             optopt);
5814                         usage(B_FALSE);
5815                 }
5816         }
5817
5818         if (recursive) {
5819                 types |= ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME;
5820                 flags |= ZFS_ITER_RECURSE;
5821         }
5822
5823         argc -= optind;
5824         argv += optind;
5825
5826         /* check number of arguments */
5827         if (argc < 1)
5828                 usage(B_FALSE);
5829
5830         if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0)
5831                 nomem();
5832
5833         for (i = 0; i < argc; ++i) {
5834                 char *snapshot = argv[i];
5835                 const char *delim;
5836                 const char *snapname;
5837
5838                 delim = strchr(snapshot, '@');
5839                 if (delim == NULL) {
5840                         (void) fprintf(stderr,
5841                             gettext("'%s' is not a snapshot\n"), snapshot);
5842                         ++errors;
5843                         continue;
5844                 }
5845                 snapname = delim + 1;
5846                 if (recursive)
5847                         snapshot[delim - snapshot] = '\0';
5848
5849                 cb.cb_recursive = recursive;
5850                 cb.cb_snapname = snapname;
5851                 cb.cb_nvlp = &nvl;
5852
5853                 /*
5854                  *  1. collect holds data, set format options
5855                  */
5856                 ret = zfs_for_each(argc, argv, flags, types, NULL, NULL, limit,
5857                     holds_callback, &cb);
5858                 if (ret != 0)
5859                         ++errors;
5860         }
5861
5862         /*
5863          *  2. print holds data
5864          */
5865         print_holds(scripted, cb.cb_max_namelen, cb.cb_max_taglen, nvl);
5866
5867         if (nvlist_empty(nvl))
5868                 (void) fprintf(stderr, gettext("no datasets available\n"));
5869
5870         nvlist_free(nvl);
5871
5872         return (0 != errors);
5873 }
5874
5875 #define CHECK_SPINNER 30
5876 #define SPINNER_TIME 3          /* seconds */
5877 #define MOUNT_TIME 5            /* seconds */
5878
5879 static int
5880 get_one_dataset(zfs_handle_t *zhp, void *data)
5881 {
5882         static char *spin[] = { "-", "\\", "|", "/" };
5883         static int spinval = 0;
5884         static int spincheck = 0;
5885         static time_t last_spin_time = (time_t)0;
5886         get_all_cb_t *cbp = data;
5887         zfs_type_t type = zfs_get_type(zhp);
5888
5889         if (cbp->cb_verbose) {
5890                 if (--spincheck < 0) {
5891                         time_t now = time(NULL);
5892                         if (last_spin_time + SPINNER_TIME < now) {
5893                                 update_progress(spin[spinval++ % 4]);
5894                                 last_spin_time = now;
5895                         }
5896                         spincheck = CHECK_SPINNER;
5897                 }
5898         }
5899
5900         /*
5901          * Iterate over any nested datasets.
5902          */
5903         if (zfs_iter_filesystems(zhp, get_one_dataset, data) != 0) {
5904                 zfs_close(zhp);
5905                 return (1);
5906         }
5907
5908         /*
5909          * Skip any datasets whose type does not match.
5910          */
5911         if ((type & ZFS_TYPE_FILESYSTEM) == 0) {
5912                 zfs_close(zhp);
5913                 return (0);
5914         }
5915         libzfs_add_handle(cbp, zhp);
5916         assert(cbp->cb_used <= cbp->cb_alloc);
5917
5918         return (0);
5919 }
5920
5921 static void
5922 get_all_datasets(zfs_handle_t ***dslist, size_t *count, boolean_t verbose)
5923 {
5924         get_all_cb_t cb = { 0 };
5925         cb.cb_verbose = verbose;
5926         cb.cb_getone = get_one_dataset;
5927
5928         if (verbose)
5929                 set_progress_header(gettext("Reading ZFS config"));
5930         (void) zfs_iter_root(g_zfs, get_one_dataset, &cb);
5931
5932         *dslist = cb.cb_handles;
5933         *count = cb.cb_used;
5934
5935         if (verbose)
5936                 finish_progress(gettext("done."));
5937 }
5938
5939 /*
5940  * Generic callback for sharing or mounting filesystems.  Because the code is so
5941  * similar, we have a common function with an extra parameter to determine which
5942  * mode we are using.
5943  */
5944 #define OP_SHARE        0x1
5945 #define OP_MOUNT        0x2
5946
5947 /*
5948  * Share or mount a dataset.
5949  */
5950 static int
5951 share_mount_one(zfs_handle_t *zhp, int op, int flags, char *protocol,
5952     boolean_t explicit, const char *options)
5953 {
5954         char mountpoint[ZFS_MAXPROPLEN];
5955         char shareopts[ZFS_MAXPROPLEN];
5956         char smbshareopts[ZFS_MAXPROPLEN];
5957         const char *cmdname = op == OP_SHARE ? "share" : "mount";
5958         struct mnttab mnt;
5959         uint64_t zoned, canmount;
5960         boolean_t shared_nfs, shared_smb;
5961
5962         assert(zfs_get_type(zhp) & ZFS_TYPE_FILESYSTEM);
5963
5964         /*
5965          * Check to make sure we can mount/share this dataset.  If we
5966          * are in the global zone and the filesystem is exported to a
5967          * local zone, or if we are in a local zone and the
5968          * filesystem is not exported, then it is an error.
5969          */
5970         zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED);
5971
5972         if (zoned && getzoneid() == GLOBAL_ZONEID) {
5973                 if (!explicit)
5974                         return (0);
5975
5976                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5977                     "dataset is exported to a local zone\n"), cmdname,
5978                     zfs_get_name(zhp));
5979                 return (1);
5980
5981         } else if (!zoned && getzoneid() != GLOBAL_ZONEID) {
5982                 if (!explicit)
5983                         return (0);
5984
5985                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5986                     "permission denied\n"), cmdname,
5987                     zfs_get_name(zhp));
5988                 return (1);
5989         }
5990
5991         /*
5992          * Ignore any filesystems which don't apply to us. This
5993          * includes those with a legacy mountpoint, or those with
5994          * legacy share options.
5995          */
5996         verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
5997             sizeof (mountpoint), NULL, NULL, 0, B_FALSE) == 0);
5998         verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, shareopts,
5999             sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0);
6000         verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshareopts,
6001             sizeof (smbshareopts), NULL, NULL, 0, B_FALSE) == 0);
6002
6003         if (op == OP_SHARE && strcmp(shareopts, "off") == 0 &&
6004             strcmp(smbshareopts, "off") == 0) {
6005                 if (!explicit)
6006                         return (0);
6007
6008                 (void) fprintf(stderr, gettext("cannot share '%s': "
6009                     "legacy share\n"), zfs_get_name(zhp));
6010                 (void) fprintf(stderr, gettext("use share(1M) to "
6011                     "share this filesystem, or set "
6012                     "sharenfs property on\n"));
6013                 return (1);
6014         }
6015
6016         /*
6017          * We cannot share or mount legacy filesystems. If the
6018          * shareopts is non-legacy but the mountpoint is legacy, we
6019          * treat it as a legacy share.
6020          */
6021         if (strcmp(mountpoint, "legacy") == 0) {
6022                 if (!explicit)
6023                         return (0);
6024
6025                 (void) fprintf(stderr, gettext("cannot %s '%s': "
6026                     "legacy mountpoint\n"), cmdname, zfs_get_name(zhp));
6027                 (void) fprintf(stderr, gettext("use %s(1M) to "
6028                     "%s this filesystem\n"), cmdname, cmdname);
6029                 return (1);
6030         }
6031
6032         if (strcmp(mountpoint, "none") == 0) {
6033                 if (!explicit)
6034                         return (0);
6035
6036                 (void) fprintf(stderr, gettext("cannot %s '%s': no "
6037                     "mountpoint set\n"), cmdname, zfs_get_name(zhp));
6038                 return (1);
6039         }
6040
6041         /*
6042          * canmount     explicit        outcome
6043          * on           no              pass through
6044          * on           yes             pass through
6045          * off          no              return 0
6046          * off          yes             display error, return 1
6047          * noauto       no              return 0
6048          * noauto       yes             pass through
6049          */
6050         canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT);
6051         if (canmount == ZFS_CANMOUNT_OFF) {
6052                 if (!explicit)
6053                         return (0);
6054
6055                 (void) fprintf(stderr, gettext("cannot %s '%s': "
6056                     "'canmount' property is set to 'off'\n"), cmdname,
6057                     zfs_get_name(zhp));
6058                 return (1);
6059         } else if (canmount == ZFS_CANMOUNT_NOAUTO && !explicit) {
6060                 return (0);
6061         }
6062
6063         /*
6064          * If this filesystem is inconsistent and has a receive resume
6065          * token, we can not mount it.
6066          */
6067         if (zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) &&
6068             zfs_prop_get(zhp, ZFS_PROP_RECEIVE_RESUME_TOKEN,
6069             NULL, 0, NULL, NULL, 0, B_TRUE) == 0) {
6070                 if (!explicit)
6071                         return (0);
6072
6073                 (void) fprintf(stderr, gettext("cannot %s '%s': "
6074                     "Contains partially-completed state from "
6075                     "\"zfs receive -s\", which can be resumed with "
6076                     "\"zfs send -t\"\n"),
6077                     cmdname, zfs_get_name(zhp));
6078                 return (1);
6079         }
6080
6081         /*
6082          * At this point, we have verified that the mountpoint and/or
6083          * shareopts are appropriate for auto management. If the
6084          * filesystem is already mounted or shared, return (failing
6085          * for explicit requests); otherwise mount or share the
6086          * filesystem.
6087          */
6088         switch (op) {
6089         case OP_SHARE:
6090
6091                 shared_nfs = zfs_is_shared_nfs(zhp, NULL);
6092                 shared_smb = zfs_is_shared_smb(zhp, NULL);
6093
6094                 if ((shared_nfs && shared_smb) ||
6095                     (shared_nfs && strcmp(shareopts, "on") == 0 &&
6096                     strcmp(smbshareopts, "off") == 0) ||
6097                     (shared_smb && strcmp(smbshareopts, "on") == 0 &&
6098                     strcmp(shareopts, "off") == 0)) {
6099                         if (!explicit)
6100                                 return (0);
6101
6102                         (void) fprintf(stderr, gettext("cannot share "
6103                             "'%s': filesystem already shared\n"),
6104                             zfs_get_name(zhp));
6105                         return (1);
6106                 }
6107
6108                 if (!zfs_is_mounted(zhp, NULL) &&
6109                     zfs_mount(zhp, NULL, 0) != 0)
6110                         return (1);
6111
6112                 if (protocol == NULL) {
6113                         if (zfs_shareall(zhp) != 0)
6114                                 return (1);
6115                 } else if (strcmp(protocol, "nfs") == 0) {
6116                         if (zfs_share_nfs(zhp))
6117                                 return (1);
6118                 } else if (strcmp(protocol, "smb") == 0) {
6119                         if (zfs_share_smb(zhp))
6120                                 return (1);
6121                 } else {
6122                         (void) fprintf(stderr, gettext("cannot share "
6123                             "'%s': invalid share type '%s' "
6124                             "specified\n"),
6125                             zfs_get_name(zhp), protocol);
6126                         return (1);
6127                 }
6128
6129                 break;
6130
6131         case OP_MOUNT:
6132                 if (options == NULL)
6133                         mnt.mnt_mntopts = "";
6134                 else
6135                         mnt.mnt_mntopts = (char *)options;
6136
6137                 if (!hasmntopt(&mnt, MNTOPT_REMOUNT) &&
6138                     zfs_is_mounted(zhp, NULL)) {
6139                         if (!explicit)
6140                                 return (0);
6141
6142                         (void) fprintf(stderr, gettext("cannot mount "
6143                             "'%s': filesystem already mounted\n"),
6144                             zfs_get_name(zhp));
6145                         return (1);
6146                 }
6147
6148                 if (zfs_mount(zhp, options, flags) != 0)
6149                         return (1);
6150                 break;
6151         }
6152
6153         return (0);
6154 }
6155
6156 /*
6157  * Reports progress in the form "(current/total)".  Not thread-safe.
6158  */
6159 static void
6160 report_mount_progress(int current, int total)
6161 {
6162         static time_t last_progress_time = 0;
6163         time_t now = time(NULL);
6164         char info[32];
6165
6166         /* report 1..n instead of 0..n-1 */
6167         ++current;
6168
6169         /* display header if we're here for the first time */
6170         if (current == 1) {
6171                 set_progress_header(gettext("Mounting ZFS filesystems"));
6172         } else if (current != total && last_progress_time + MOUNT_TIME >= now) {
6173                 /* too soon to report again */
6174                 return;
6175         }
6176
6177         last_progress_time = now;
6178
6179         (void) sprintf(info, "(%d/%d)", current, total);
6180
6181         if (current == total)
6182                 finish_progress(info);
6183         else
6184                 update_progress(info);
6185 }
6186
6187 static void
6188 append_options(char *mntopts, char *newopts)
6189 {
6190         int len = strlen(mntopts);
6191
6192         /* original length plus new string to append plus 1 for the comma */
6193         if (len + 1 + strlen(newopts) >= MNT_LINE_MAX) {
6194                 (void) fprintf(stderr, gettext("the opts argument for "
6195                     "'%s' option is too long (more than %d chars)\n"),
6196                     "-o", MNT_LINE_MAX);
6197                 usage(B_FALSE);
6198         }
6199
6200         if (*mntopts)
6201                 mntopts[len++] = ',';
6202
6203         (void) strcpy(&mntopts[len], newopts);
6204 }
6205
6206 static int
6207 share_mount(int op, int argc, char **argv)
6208 {
6209         int do_all = 0;
6210         boolean_t verbose = B_FALSE;
6211         int c, ret = 0;
6212         char *options = NULL;
6213         int flags = 0;
6214
6215         /* check options */
6216         while ((c = getopt(argc, argv, op == OP_MOUNT ? ":avo:O" : "a"))
6217             != -1) {
6218                 switch (c) {
6219                 case 'a':
6220                         do_all = 1;
6221                         break;
6222                 case 'v':
6223                         verbose = B_TRUE;
6224                         break;
6225                 case 'o':
6226                         if (*optarg == '\0') {
6227                                 (void) fprintf(stderr, gettext("empty mount "
6228                                     "options (-o) specified\n"));
6229                                 usage(B_FALSE);
6230                         }
6231
6232                         if (options == NULL)
6233                                 options = safe_malloc(MNT_LINE_MAX + 1);
6234
6235                         /* option validation is done later */
6236                         append_options(options, optarg);
6237                         break;
6238                 case 'O':
6239                         flags |= MS_OVERLAY;
6240                         break;
6241                 case ':':
6242                         (void) fprintf(stderr, gettext("missing argument for "
6243                             "'%c' option\n"), optopt);
6244                         usage(B_FALSE);
6245                         break;
6246                 case '?':
6247                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6248                             optopt);
6249                         usage(B_FALSE);
6250                 }
6251         }
6252
6253         argc -= optind;
6254         argv += optind;
6255
6256         /* check number of arguments */
6257         if (do_all) {
6258                 zfs_handle_t **dslist = NULL;
6259                 size_t i, count = 0;
6260                 char *protocol = NULL;
6261
6262                 if (op == OP_SHARE && argc > 0) {
6263                         if (strcmp(argv[0], "nfs") != 0 &&
6264                             strcmp(argv[0], "smb") != 0) {
6265                                 (void) fprintf(stderr, gettext("share type "
6266                                     "must be 'nfs' or 'smb'\n"));
6267                                 usage(B_FALSE);
6268                         }
6269                         protocol = argv[0];
6270                         argc--;
6271                         argv++;
6272                 }
6273
6274                 if (argc != 0) {
6275                         (void) fprintf(stderr, gettext("too many arguments\n"));
6276                         usage(B_FALSE);
6277                 }
6278
6279                 start_progress_timer();
6280                 get_all_datasets(&dslist, &count, verbose);
6281
6282                 if (count == 0) {
6283                         if (options != NULL)
6284                                 free(options);
6285                         return (0);
6286                 }
6287
6288                 qsort(dslist, count, sizeof (void *), libzfs_dataset_cmp);
6289
6290                 for (i = 0; i < count; i++) {
6291                         if (verbose)
6292                                 report_mount_progress(i, count);
6293
6294                         if (share_mount_one(dslist[i], op, flags, protocol,
6295                             B_FALSE, options) != 0)
6296                                 ret = 1;
6297                         zfs_close(dslist[i]);
6298                 }
6299
6300                 free(dslist);
6301         } else if (argc == 0) {
6302                 struct mnttab entry;
6303
6304                 if ((op == OP_SHARE) || (options != NULL)) {
6305                         (void) fprintf(stderr, gettext("missing filesystem "
6306                             "argument (specify -a for all)\n"));
6307                         usage(B_FALSE);
6308                 }
6309
6310                 /*
6311                  * When mount is given no arguments, go through
6312                  * /proc/self/mounts and display any active ZFS mounts.
6313                  * We hide any snapshots, since they are controlled
6314                  * automatically.
6315                  */
6316
6317                 /* Reopen MNTTAB to prevent reading stale data from open file */
6318                 if (freopen(MNTTAB, "r", mnttab_file) == NULL) {
6319                         if (options != NULL)
6320                                 free(options);
6321                         return (ENOENT);
6322                 }
6323
6324                 while (getmntent(mnttab_file, &entry) == 0) {
6325                         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0 ||
6326                             strchr(entry.mnt_special, '@') != NULL)
6327                                 continue;
6328
6329                         (void) printf("%-30s  %s\n", entry.mnt_special,
6330                             entry.mnt_mountp);
6331                 }
6332
6333         } else {
6334                 zfs_handle_t *zhp;
6335
6336                 if (argc > 1) {
6337                         (void) fprintf(stderr,
6338                             gettext("too many arguments\n"));
6339                         usage(B_FALSE);
6340                 }
6341
6342                 if ((zhp = zfs_open(g_zfs, argv[0],
6343                     ZFS_TYPE_FILESYSTEM)) == NULL) {
6344                         ret = 1;
6345                 } else {
6346                         ret = share_mount_one(zhp, op, flags, NULL, B_TRUE,
6347                             options);
6348                         zfs_close(zhp);
6349                 }
6350         }
6351
6352         if (options != NULL)
6353                 free(options);
6354
6355         return (ret);
6356 }
6357
6358 /*
6359  * zfs mount -a [nfs]
6360  * zfs mount filesystem
6361  *
6362  * Mount all filesystems, or mount the given filesystem.
6363  */
6364 static int
6365 zfs_do_mount(int argc, char **argv)
6366 {
6367         return (share_mount(OP_MOUNT, argc, argv));
6368 }
6369
6370 /*
6371  * zfs share -a [nfs | smb]
6372  * zfs share filesystem
6373  *
6374  * Share all filesystems, or share the given filesystem.
6375  */
6376 static int
6377 zfs_do_share(int argc, char **argv)
6378 {
6379         return (share_mount(OP_SHARE, argc, argv));
6380 }
6381
6382 typedef struct unshare_unmount_node {
6383         zfs_handle_t    *un_zhp;
6384         char            *un_mountp;
6385         uu_avl_node_t   un_avlnode;
6386 } unshare_unmount_node_t;
6387
6388 /* ARGSUSED */
6389 static int
6390 unshare_unmount_compare(const void *larg, const void *rarg, void *unused)
6391 {
6392         const unshare_unmount_node_t *l = larg;
6393         const unshare_unmount_node_t *r = rarg;
6394
6395         return (strcmp(l->un_mountp, r->un_mountp));
6396 }
6397
6398 /*
6399  * Convenience routine used by zfs_do_umount() and manual_unmount().  Given an
6400  * absolute path, find the entry /proc/self/mounts, verify that its a
6401  * ZFS filesystems, and unmount it appropriately.
6402  */
6403 static int
6404 unshare_unmount_path(int op, char *path, int flags, boolean_t is_manual)
6405 {
6406         zfs_handle_t *zhp;
6407         int ret = 0;
6408         struct stat64 statbuf;
6409         struct extmnttab entry;
6410         const char *cmdname = (op == OP_SHARE) ? "unshare" : "unmount";
6411         ino_t path_inode;
6412
6413         /*
6414          * Search for the path in /proc/self/mounts. Rather than looking for the
6415          * specific path, which can be fooled by non-standard paths (i.e. ".."
6416          * or "//"), we stat() the path and search for the corresponding
6417          * (major,minor) device pair.
6418          */
6419         if (stat64(path, &statbuf) != 0) {
6420                 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
6421                     cmdname, path, strerror(errno));
6422                 return (1);
6423         }
6424         path_inode = statbuf.st_ino;
6425
6426         /*
6427          * Search for the given (major,minor) pair in the mount table.
6428          */
6429
6430         /* Reopen MNTTAB to prevent reading stale data from open file */
6431         if (freopen(MNTTAB, "r", mnttab_file) == NULL)
6432                 return (ENOENT);
6433
6434         while ((ret = getextmntent(mnttab_file, &entry, 0)) == 0) {
6435                 if (entry.mnt_major == major(statbuf.st_dev) &&
6436                     entry.mnt_minor == minor(statbuf.st_dev))
6437                         break;
6438         }
6439         if (ret != 0) {
6440                 if (op == OP_SHARE) {
6441                         (void) fprintf(stderr, gettext("cannot %s '%s': not "
6442                             "currently mounted\n"), cmdname, path);
6443                         return (1);
6444                 }
6445                 (void) fprintf(stderr, gettext("warning: %s not in"
6446                     "/proc/self/mounts\n"), path);
6447                 if ((ret = umount2(path, flags)) != 0)
6448                         (void) fprintf(stderr, gettext("%s: %s\n"), path,
6449                             strerror(errno));
6450                 return (ret != 0);
6451         }
6452
6453         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) {
6454                 (void) fprintf(stderr, gettext("cannot %s '%s': not a ZFS "
6455                     "filesystem\n"), cmdname, path);
6456                 return (1);
6457         }
6458
6459         if ((zhp = zfs_open(g_zfs, entry.mnt_special,
6460             ZFS_TYPE_FILESYSTEM)) == NULL)
6461                 return (1);
6462
6463         ret = 1;
6464         if (stat64(entry.mnt_mountp, &statbuf) != 0) {
6465                 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
6466                     cmdname, path, strerror(errno));
6467                 goto out;
6468         } else if (statbuf.st_ino != path_inode) {
6469                 (void) fprintf(stderr, gettext("cannot "
6470                     "%s '%s': not a mountpoint\n"), cmdname, path);
6471                 goto out;
6472         }
6473
6474         if (op == OP_SHARE) {
6475                 char nfs_mnt_prop[ZFS_MAXPROPLEN];
6476                 char smbshare_prop[ZFS_MAXPROPLEN];
6477
6478                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, nfs_mnt_prop,
6479                     sizeof (nfs_mnt_prop), NULL, NULL, 0, B_FALSE) == 0);
6480                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshare_prop,
6481                     sizeof (smbshare_prop), NULL, NULL, 0, B_FALSE) == 0);
6482
6483                 if (strcmp(nfs_mnt_prop, "off") == 0 &&
6484                     strcmp(smbshare_prop, "off") == 0) {
6485                         (void) fprintf(stderr, gettext("cannot unshare "
6486                             "'%s': legacy share\n"), path);
6487                         (void) fprintf(stderr, gettext("use exportfs(8) "
6488                             "or smbcontrol(1) to unshare this filesystem\n"));
6489                 } else if (!zfs_is_shared(zhp)) {
6490                         (void) fprintf(stderr, gettext("cannot unshare '%s': "
6491                             "not currently shared\n"), path);
6492                 } else {
6493                         ret = zfs_unshareall_bypath(zhp, path);
6494                 }
6495         } else {
6496                 char mtpt_prop[ZFS_MAXPROPLEN];
6497
6498                 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mtpt_prop,
6499                     sizeof (mtpt_prop), NULL, NULL, 0, B_FALSE) == 0);
6500
6501                 if (is_manual) {
6502                         ret = zfs_unmount(zhp, NULL, flags);
6503                 } else if (strcmp(mtpt_prop, "legacy") == 0) {
6504                         (void) fprintf(stderr, gettext("cannot unmount "
6505                             "'%s': legacy mountpoint\n"),
6506                             zfs_get_name(zhp));
6507                         (void) fprintf(stderr, gettext("use umount(8) "
6508                             "to unmount this filesystem\n"));
6509                 } else {
6510                         ret = zfs_unmountall(zhp, flags);
6511                 }
6512         }
6513
6514 out:
6515         zfs_close(zhp);
6516
6517         return (ret != 0);
6518 }
6519
6520 /*
6521  * Generic callback for unsharing or unmounting a filesystem.
6522  */
6523 static int
6524 unshare_unmount(int op, int argc, char **argv)
6525 {
6526         int do_all = 0;
6527         int flags = 0;
6528         int ret = 0;
6529         int c;
6530         zfs_handle_t *zhp;
6531         char nfs_mnt_prop[ZFS_MAXPROPLEN];
6532         char sharesmb[ZFS_MAXPROPLEN];
6533
6534         /* check options */
6535         while ((c = getopt(argc, argv, op == OP_SHARE ? ":a" : "af")) != -1) {
6536                 switch (c) {
6537                 case 'a':
6538                         do_all = 1;
6539                         break;
6540                 case 'f':
6541                         flags = MS_FORCE;
6542                         break;
6543                 case ':':
6544                         (void) fprintf(stderr, gettext("missing argument for "
6545                             "'%c' option\n"), optopt);
6546                         usage(B_FALSE);
6547                         break;
6548                 case '?':
6549                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6550                             optopt);
6551                         usage(B_FALSE);
6552                 }
6553         }
6554
6555         argc -= optind;
6556         argv += optind;
6557
6558         if (do_all) {
6559                 /*
6560                  * We could make use of zfs_for_each() to walk all datasets in
6561                  * the system, but this would be very inefficient, especially
6562                  * since we would have to linearly search /proc/self/mounts for
6563                  * each one. Instead, do one pass through /proc/self/mounts
6564                  * looking for zfs entries and call zfs_unmount() for each one.
6565                  *
6566                  * Things get a little tricky if the administrator has created
6567                  * mountpoints beneath other ZFS filesystems.  In this case, we
6568                  * have to unmount the deepest filesystems first.  To accomplish
6569                  * this, we place all the mountpoints in an AVL tree sorted by
6570                  * the special type (dataset name), and walk the result in
6571                  * reverse to make sure to get any snapshots first.
6572                  */
6573                 struct mnttab entry;
6574                 uu_avl_pool_t *pool;
6575                 uu_avl_t *tree = NULL;
6576                 unshare_unmount_node_t *node;
6577                 uu_avl_index_t idx;
6578                 uu_avl_walk_t *walk;
6579                 char *protocol = NULL;
6580
6581                 if (op == OP_SHARE && argc > 0) {
6582                         if (strcmp(argv[0], "nfs") != 0 &&
6583                             strcmp(argv[0], "smb") != 0) {
6584                                 (void) fprintf(stderr, gettext("share type "
6585                                     "must be 'nfs' or 'smb'\n"));
6586                                 usage(B_FALSE);
6587                         }
6588                         protocol = argv[0];
6589                         argc--;
6590                         argv++;
6591                 }
6592
6593                 if (argc != 0) {
6594                         (void) fprintf(stderr, gettext("too many arguments\n"));
6595                         usage(B_FALSE);
6596                 }
6597
6598                 if (((pool = uu_avl_pool_create("unmount_pool",
6599                     sizeof (unshare_unmount_node_t),
6600                     offsetof(unshare_unmount_node_t, un_avlnode),
6601                     unshare_unmount_compare, UU_DEFAULT)) == NULL) ||
6602                     ((tree = uu_avl_create(pool, NULL, UU_DEFAULT)) == NULL))
6603                         nomem();
6604
6605                 /* Reopen MNTTAB to prevent reading stale data from open file */
6606                 if (freopen(MNTTAB, "r", mnttab_file) == NULL)
6607                         return (ENOENT);
6608
6609                 while (getmntent(mnttab_file, &entry) == 0) {
6610
6611                         /* ignore non-ZFS entries */
6612                         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0)
6613                                 continue;
6614
6615                         /* ignore snapshots */
6616                         if (strchr(entry.mnt_special, '@') != NULL)
6617                                 continue;
6618
6619                         if ((zhp = zfs_open(g_zfs, entry.mnt_special,
6620                             ZFS_TYPE_FILESYSTEM)) == NULL) {
6621                                 ret = 1;
6622                                 continue;
6623                         }
6624
6625                         /*
6626                          * Ignore datasets that are excluded/restricted by
6627                          * parent pool name.
6628                          */
6629                         if (zpool_skip_pool(zfs_get_pool_name(zhp))) {
6630                                 zfs_close(zhp);
6631                                 continue;
6632                         }
6633
6634                         switch (op) {
6635                         case OP_SHARE:
6636                                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
6637                                     nfs_mnt_prop,
6638                                     sizeof (nfs_mnt_prop),
6639                                     NULL, NULL, 0, B_FALSE) == 0);
6640                                 if (strcmp(nfs_mnt_prop, "off") != 0)
6641                                         break;
6642                                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
6643                                     nfs_mnt_prop,
6644                                     sizeof (nfs_mnt_prop),
6645                                     NULL, NULL, 0, B_FALSE) == 0);
6646                                 if (strcmp(nfs_mnt_prop, "off") == 0)
6647                                         continue;
6648                                 break;
6649                         case OP_MOUNT:
6650                                 /* Ignore legacy mounts */
6651                                 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT,
6652                                     nfs_mnt_prop,
6653                                     sizeof (nfs_mnt_prop),
6654                                     NULL, NULL, 0, B_FALSE) == 0);
6655                                 if (strcmp(nfs_mnt_prop, "legacy") == 0)
6656                                         continue;
6657                                 /* Ignore canmount=noauto mounts */
6658                                 if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) ==
6659                                     ZFS_CANMOUNT_NOAUTO)
6660                                         continue;
6661                         default:
6662                                 break;
6663                         }
6664
6665                         node = safe_malloc(sizeof (unshare_unmount_node_t));
6666                         node->un_zhp = zhp;
6667                         node->un_mountp = safe_strdup(entry.mnt_mountp);
6668
6669                         uu_avl_node_init(node, &node->un_avlnode, pool);
6670
6671                         if (uu_avl_find(tree, node, NULL, &idx) == NULL) {
6672                                 uu_avl_insert(tree, node, idx);
6673                         } else {
6674                                 zfs_close(node->un_zhp);
6675                                 free(node->un_mountp);
6676                                 free(node);
6677                         }
6678                 }
6679
6680                 /*
6681                  * Walk the AVL tree in reverse, unmounting each filesystem and
6682                  * removing it from the AVL tree in the process.
6683                  */
6684                 if ((walk = uu_avl_walk_start(tree,
6685                     UU_WALK_REVERSE | UU_WALK_ROBUST)) == NULL)
6686                         nomem();
6687
6688                 while ((node = uu_avl_walk_next(walk)) != NULL) {
6689                         uu_avl_remove(tree, node);
6690
6691                         switch (op) {
6692                         case OP_SHARE:
6693                                 if (zfs_unshareall_bytype(node->un_zhp,
6694                                     node->un_mountp, protocol) != 0)
6695                                         ret = 1;
6696                                 break;
6697
6698                         case OP_MOUNT:
6699                                 if (zfs_unmount(node->un_zhp,
6700                                     node->un_mountp, flags) != 0)
6701                                         ret = 1;
6702                                 break;
6703                         }
6704
6705                         zfs_close(node->un_zhp);
6706                         free(node->un_mountp);
6707                         free(node);
6708                 }
6709
6710                 uu_avl_walk_end(walk);
6711                 uu_avl_destroy(tree);
6712                 uu_avl_pool_destroy(pool);
6713
6714         } else {
6715                 if (argc != 1) {
6716                         if (argc == 0)
6717                                 (void) fprintf(stderr,
6718                                     gettext("missing filesystem argument\n"));
6719                         else
6720                                 (void) fprintf(stderr,
6721                                     gettext("too many arguments\n"));
6722                         usage(B_FALSE);
6723                 }
6724
6725                 /*
6726                  * We have an argument, but it may be a full path or a ZFS
6727                  * filesystem.  Pass full paths off to unmount_path() (shared by
6728                  * manual_unmount), otherwise open the filesystem and pass to
6729                  * zfs_unmount().
6730                  */
6731                 if (argv[0][0] == '/')
6732                         return (unshare_unmount_path(op, argv[0],
6733                             flags, B_FALSE));
6734
6735                 if ((zhp = zfs_open(g_zfs, argv[0],
6736                     ZFS_TYPE_FILESYSTEM)) == NULL)
6737                         return (1);
6738
6739                 verify(zfs_prop_get(zhp, op == OP_SHARE ?
6740                     ZFS_PROP_SHARENFS : ZFS_PROP_MOUNTPOINT,
6741                     nfs_mnt_prop, sizeof (nfs_mnt_prop), NULL,
6742                     NULL, 0, B_FALSE) == 0);
6743
6744                 switch (op) {
6745                 case OP_SHARE:
6746                         verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
6747                             nfs_mnt_prop,
6748                             sizeof (nfs_mnt_prop),
6749                             NULL, NULL, 0, B_FALSE) == 0);
6750                         verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
6751                             sharesmb, sizeof (sharesmb), NULL, NULL,
6752                             0, B_FALSE) == 0);
6753
6754                         if (strcmp(nfs_mnt_prop, "off") == 0 &&
6755                             strcmp(sharesmb, "off") == 0) {
6756                                 (void) fprintf(stderr, gettext("cannot "
6757                                     "unshare '%s': legacy share\n"),
6758                                     zfs_get_name(zhp));
6759                                 (void) fprintf(stderr, gettext("use "
6760                                     "unshare(1M) to unshare this "
6761                                     "filesystem\n"));
6762                                 ret = 1;
6763                         } else if (!zfs_is_shared(zhp)) {
6764                                 (void) fprintf(stderr, gettext("cannot "
6765                                     "unshare '%s': not currently "
6766                                     "shared\n"), zfs_get_name(zhp));
6767                                 ret = 1;
6768                         } else if (zfs_unshareall(zhp) != 0) {
6769                                 ret = 1;
6770                         }
6771                         break;
6772
6773                 case OP_MOUNT:
6774                         if (strcmp(nfs_mnt_prop, "legacy") == 0) {
6775                                 (void) fprintf(stderr, gettext("cannot "
6776                                     "unmount '%s': legacy "
6777                                     "mountpoint\n"), zfs_get_name(zhp));
6778                                 (void) fprintf(stderr, gettext("use "
6779                                     "umount(1M) to unmount this "
6780                                     "filesystem\n"));
6781                                 ret = 1;
6782                         } else if (!zfs_is_mounted(zhp, NULL)) {
6783                                 (void) fprintf(stderr, gettext("cannot "
6784                                     "unmount '%s': not currently "
6785                                     "mounted\n"),
6786                                     zfs_get_name(zhp));
6787                                 ret = 1;
6788                         } else if (zfs_unmountall(zhp, flags) != 0) {
6789                                 ret = 1;
6790                         }
6791                         break;
6792                 }
6793
6794                 zfs_close(zhp);
6795         }
6796
6797         return (ret);
6798 }
6799
6800 /*
6801  * zfs unmount -a
6802  * zfs unmount filesystem
6803  *
6804  * Unmount all filesystems, or a specific ZFS filesystem.
6805  */
6806 static int
6807 zfs_do_unmount(int argc, char **argv)
6808 {
6809         return (unshare_unmount(OP_MOUNT, argc, argv));
6810 }
6811
6812 /*
6813  * zfs unshare -a
6814  * zfs unshare filesystem
6815  *
6816  * Unshare all filesystems, or a specific ZFS filesystem.
6817  */
6818 static int
6819 zfs_do_unshare(int argc, char **argv)
6820 {
6821         return (unshare_unmount(OP_SHARE, argc, argv));
6822 }
6823
6824 static int
6825 find_command_idx(char *command, int *idx)
6826 {
6827         int i;
6828
6829         for (i = 0; i < NCOMMAND; i++) {
6830                 if (command_table[i].name == NULL)
6831                         continue;
6832
6833                 if (strcmp(command, command_table[i].name) == 0) {
6834                         *idx = i;
6835                         return (0);
6836                 }
6837         }
6838         return (1);
6839 }
6840
6841 static int
6842 zfs_do_diff(int argc, char **argv)
6843 {
6844         zfs_handle_t *zhp;
6845         int flags = 0;
6846         char *tosnap = NULL;
6847         char *fromsnap = NULL;
6848         char *atp, *copy;
6849         int err = 0;
6850         int c;
6851
6852         while ((c = getopt(argc, argv, "FHt")) != -1) {
6853                 switch (c) {
6854                 case 'F':
6855                         flags |= ZFS_DIFF_CLASSIFY;
6856                         break;
6857                 case 'H':
6858                         flags |= ZFS_DIFF_PARSEABLE;
6859                         break;
6860                 case 't':
6861                         flags |= ZFS_DIFF_TIMESTAMP;
6862                         break;
6863                 default:
6864                         (void) fprintf(stderr,
6865                             gettext("invalid option '%c'\n"), optopt);
6866                         usage(B_FALSE);
6867                 }
6868         }
6869
6870         argc -= optind;
6871         argv += optind;
6872
6873         if (argc < 1) {
6874                 (void) fprintf(stderr,
6875                 gettext("must provide at least one snapshot name\n"));
6876                 usage(B_FALSE);
6877         }
6878
6879         if (argc > 2) {
6880                 (void) fprintf(stderr, gettext("too many arguments\n"));
6881                 usage(B_FALSE);
6882         }
6883
6884         fromsnap = argv[0];
6885         tosnap = (argc == 2) ? argv[1] : NULL;
6886
6887         copy = NULL;
6888         if (*fromsnap != '@')
6889                 copy = strdup(fromsnap);
6890         else if (tosnap)
6891                 copy = strdup(tosnap);
6892         if (copy == NULL)
6893                 usage(B_FALSE);
6894
6895         if ((atp = strchr(copy, '@')) != NULL)
6896                 *atp = '\0';
6897
6898         if ((zhp = zfs_open(g_zfs, copy, ZFS_TYPE_FILESYSTEM)) == NULL) {
6899                 free(copy);
6900                 return (1);
6901         }
6902         free(copy);
6903
6904         /*
6905          * Ignore SIGPIPE so that the library can give us
6906          * information on any failure
6907          */
6908         (void) sigignore(SIGPIPE);
6909
6910         err = zfs_show_diffs(zhp, STDOUT_FILENO, fromsnap, tosnap, flags);
6911
6912         zfs_close(zhp);
6913
6914         return (err != 0);
6915 }
6916
6917 /*
6918  * zfs bookmark <fs@snap> <fs#bmark>
6919  *
6920  * Creates a bookmark with the given name from the given snapshot.
6921  */
6922 static int
6923 zfs_do_bookmark(int argc, char **argv)
6924 {
6925         char snapname[ZFS_MAX_DATASET_NAME_LEN];
6926         char bookname[ZFS_MAX_DATASET_NAME_LEN];
6927         zfs_handle_t *zhp;
6928         nvlist_t *nvl;
6929         int ret = 0;
6930         int c;
6931
6932         /* check options */
6933         while ((c = getopt(argc, argv, "")) != -1) {
6934                 switch (c) {
6935                 case '?':
6936                         (void) fprintf(stderr,
6937                             gettext("invalid option '%c'\n"), optopt);
6938                         goto usage;
6939                 }
6940         }
6941
6942         argc -= optind;
6943         argv += optind;
6944
6945         /* check number of arguments */
6946         if (argc < 1) {
6947                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
6948                 goto usage;
6949         }
6950         if (argc < 2) {
6951                 (void) fprintf(stderr, gettext("missing bookmark argument\n"));
6952                 goto usage;
6953         }
6954
6955         if (strchr(argv[1], '#') == NULL) {
6956                 (void) fprintf(stderr,
6957                     gettext("invalid bookmark name '%s': "
6958                     "must contain a '#'\n"), argv[1]);
6959                 goto usage;
6960         }
6961
6962         if (argv[0][0] == '@') {
6963                 /*
6964                  * Snapshot name begins with @.
6965                  * Default to same fs as bookmark.
6966                  */
6967                 (void) strlcpy(snapname, argv[1], sizeof (snapname));
6968                 *strchr(snapname, '#') = '\0';
6969                 (void) strlcat(snapname, argv[0], sizeof (snapname));
6970         } else {
6971                 (void) strlcpy(snapname, argv[0], sizeof (snapname));
6972         }
6973         if (argv[1][0] == '#') {
6974                 /*
6975                  * Bookmark name begins with #.
6976                  * Default to same fs as snapshot.
6977                  */
6978                 (void) strlcpy(bookname, argv[0], sizeof (bookname));
6979                 *strchr(bookname, '@') = '\0';
6980                 (void) strlcat(bookname, argv[1], sizeof (bookname));
6981         } else {
6982                 (void) strlcpy(bookname, argv[1], sizeof (bookname));
6983         }
6984
6985         zhp = zfs_open(g_zfs, snapname, ZFS_TYPE_SNAPSHOT);
6986         if (zhp == NULL)
6987                 goto usage;
6988         zfs_close(zhp);
6989
6990
6991         nvl = fnvlist_alloc();
6992         fnvlist_add_string(nvl, bookname, snapname);
6993         ret = lzc_bookmark(nvl, NULL);
6994         fnvlist_free(nvl);
6995
6996         if (ret != 0) {
6997                 const char *err_msg;
6998                 char errbuf[1024];
6999
7000                 (void) snprintf(errbuf, sizeof (errbuf),
7001                     dgettext(TEXT_DOMAIN,
7002                     "cannot create bookmark '%s'"), bookname);
7003
7004                 switch (ret) {
7005                 case EXDEV:
7006                         err_msg = "bookmark is in a different pool";
7007                         break;
7008                 case EEXIST:
7009                         err_msg = "bookmark exists";
7010                         break;
7011                 case EINVAL:
7012                         err_msg = "invalid argument";
7013                         break;
7014                 case ENOTSUP:
7015                         err_msg = "bookmark feature not enabled";
7016                         break;
7017                 case ENOSPC:
7018                         err_msg = "out of space";
7019                         break;
7020                 case ENOENT:
7021                         err_msg = "dataset does not exist";
7022                         break;
7023                 default:
7024                         err_msg = "unknown error";
7025                         break;
7026                 }
7027                 (void) fprintf(stderr, "%s: %s\n", errbuf,
7028                     dgettext(TEXT_DOMAIN, err_msg));
7029         }
7030
7031         return (ret != 0);
7032
7033 usage:
7034         usage(B_FALSE);
7035         return (-1);
7036 }
7037
7038 int
7039 main(int argc, char **argv)
7040 {
7041         int ret = 0;
7042         int i = 0;
7043         char *cmdname;
7044
7045         (void) setlocale(LC_ALL, "");
7046         (void) textdomain(TEXT_DOMAIN);
7047
7048         dprintf_setup(&argc, argv);
7049
7050         opterr = 0;
7051
7052         /*
7053          * Make sure the user has specified some command.
7054          */
7055         if (argc < 2) {
7056                 (void) fprintf(stderr, gettext("missing command\n"));
7057                 usage(B_FALSE);
7058         }
7059
7060         cmdname = argv[1];
7061
7062         /*
7063          * The 'umount' command is an alias for 'unmount'
7064          */
7065         if (strcmp(cmdname, "umount") == 0)
7066                 cmdname = "unmount";
7067
7068         /*
7069          * The 'recv' command is an alias for 'receive'
7070          */
7071         if (strcmp(cmdname, "recv") == 0)
7072                 cmdname = "receive";
7073
7074         /*
7075          * The 'snap' command is an alias for 'snapshot'
7076          */
7077         if (strcmp(cmdname, "snap") == 0)
7078                 cmdname = "snapshot";
7079
7080         /*
7081          * Special case '-?'
7082          */
7083         if ((strcmp(cmdname, "-?") == 0) ||
7084             (strcmp(cmdname, "--help") == 0))
7085                 usage(B_TRUE);
7086
7087         if ((g_zfs = libzfs_init()) == NULL) {
7088                 (void) fprintf(stderr, "%s", libzfs_error_init(errno));
7089                 return (1);
7090         }
7091
7092         mnttab_file = g_zfs->libzfs_mnttab;
7093
7094         zfs_save_arguments(argc, argv, history_str, sizeof (history_str));
7095
7096         libzfs_print_on_error(g_zfs, B_TRUE);
7097
7098         /*
7099          * Run the appropriate command.
7100          */
7101         libzfs_mnttab_cache(g_zfs, B_TRUE);
7102         if (find_command_idx(cmdname, &i) == 0) {
7103                 current_command = &command_table[i];
7104                 ret = command_table[i].func(argc - 1, argv + 1);
7105         } else if (strchr(cmdname, '=') != NULL) {
7106                 verify(find_command_idx("set", &i) == 0);
7107                 current_command = &command_table[i];
7108                 ret = command_table[i].func(argc, argv);
7109         } else {
7110                 (void) fprintf(stderr, gettext("unrecognized "
7111                     "command '%s'\n"), cmdname);
7112                 usage(B_FALSE);
7113                 ret = 1;
7114         }
7115
7116         if (ret == 0 && log_history)
7117                 (void) zpool_log_history(g_zfs, history_str);
7118
7119         libzfs_fini(g_zfs);
7120
7121         /*
7122          * The 'ZFS_ABORT' environment variable causes us to dump core on exit
7123          * for the purposes of running ::findleaks.
7124          */
7125         if (getenv("ZFS_ABORT") != NULL) {
7126                 (void) printf("dumping core by request\n");
7127                 abort();
7128         }
7129
7130         return (ret);
7131 }