cmd/zfs/zfs_main.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Copyright (c) 2011, 2014 by Delphix. All rights reserved.
  25  * Copyright (c) 2012, Joyent, Inc. All rights reserved.
  26  * Copyright (c) 2013 Steven Hartland.  All rights reserved.
  27  * Copyright 2013 Nexenta Systems, Inc. All rights reserved.
  28  */
  29
  30 #include <assert.h>
  31 #include <ctype.h>
  32 #include <errno.h>
  33 #include <libgen.h>
  34 #include <libintl.h>
  35 #include <libuutil.h>
  36 #include <libnvpair.h>
  37 #include <locale.h>
  38 #include <stddef.h>
  39 #include <stdio.h>
  40 #include <stdlib.h>
  41 #include <strings.h>
  42 #include <unistd.h>
  43 #include <fcntl.h>
  44 #include <zone.h>
  45 #include <grp.h>
  46 #include <pwd.h>
  47 #include <signal.h>
  48 #include <sys/list.h>
  49 #include <sys/mkdev.h>
  50 #include <sys/mntent.h>
  51 #include <sys/mnttab.h>
  52 #include <sys/mount.h>
  53 #include <sys/stat.h>
  54 #include <sys/fs/zfs.h>
  55 #include <sys/types.h>
  56 #include <time.h>
  57
  58 #include <libzfs.h>
  59 #include <libzfs_core.h>
  60 #include <zfs_prop.h>
  61 #include <zfs_deleg.h>
  62 #include <libuutil.h>
  63 #ifdef HAVE_IDMAP
  64 #include <aclutils.h>
  65 #include <directory.h>
  66 #endif /* HAVE_IDMAP */
  67
  68 #include "zfs_iter.h"
  69 #include "zfs_util.h"
  70 #include "zfs_comutil.h"
  71 #include "libzfs_impl.h"
  72
  73 libzfs_handle_t *g_zfs;
  74
  75 static FILE *mnttab_file;
  76 static char history_str[HIS_MAX_RECORD_LEN];
  77 static boolean_t log_history = B_TRUE;
  78
  79 static int zfs_do_clone(int argc, char **argv);
  80 static int zfs_do_create(int argc, char **argv);
  81 static int zfs_do_destroy(int argc, char **argv);
  82 static int zfs_do_get(int argc, char **argv);
  83 static int zfs_do_inherit(int argc, char **argv);
  84 static int zfs_do_list(int argc, char **argv);
  85 static int zfs_do_mount(int argc, char **argv);
  86 static int zfs_do_rename(int argc, char **argv);
  87 static int zfs_do_rollback(int argc, char **argv);
  88 static int zfs_do_set(int argc, char **argv);
  89 static int zfs_do_upgrade(int argc, char **argv);
  90 static int zfs_do_snapshot(int argc, char **argv);
  91 static int zfs_do_unmount(int argc, char **argv);
  92 static int zfs_do_share(int argc, char **argv);
  93 static int zfs_do_unshare(int argc, char **argv);
  94 static int zfs_do_send(int argc, char **argv);
  95 static int zfs_do_receive(int argc, char **argv);
  96 static int zfs_do_promote(int argc, char **argv);
  97 static int zfs_do_userspace(int argc, char **argv);
  98 static int zfs_do_allow(int argc, char **argv);
  99 static int zfs_do_unallow(int argc, char **argv);
 100 static int zfs_do_hold(int argc, char **argv);
 101 static int zfs_do_holds(int argc, char **argv);
 102 static int zfs_do_release(int argc, char **argv);
 103 static int zfs_do_diff(int argc, char **argv);
 104 static int zfs_do_bookmark(int argc, char **argv);
 105
 106 /*
 107  * Enable a reasonable set of defaults for libumem debugging on DEBUG builds.
 108  */
 109
 110 #ifdef DEBUG
 111 const char *
 112 _umem_debug_init(void)
 113 {
 114         return ("default,verbose"); /* $UMEM_DEBUG setting */
 115 }
 116
 117 const char *
 118 _umem_logging_init(void)
 119 {
 120         return ("fail,contents"); /* $UMEM_LOGGING setting */
 121 }
 122 #endif
 123
 124 typedef enum {
 125         HELP_CLONE,
 126         HELP_CREATE,
 127         HELP_DESTROY,
 128         HELP_GET,
 129         HELP_INHERIT,
 130         HELP_UPGRADE,
 131         HELP_LIST,
 132         HELP_MOUNT,
 133         HELP_PROMOTE,
 134         HELP_RECEIVE,
 135         HELP_RENAME,
 136         HELP_ROLLBACK,
 137         HELP_SEND,
 138         HELP_SET,
 139         HELP_SHARE,
 140         HELP_SNAPSHOT,
 141         HELP_UNMOUNT,
 142         HELP_UNSHARE,
 143         HELP_ALLOW,
 144         HELP_UNALLOW,
 145         HELP_USERSPACE,
 146         HELP_GROUPSPACE,
 147         HELP_HOLD,
 148         HELP_HOLDS,
 149         HELP_RELEASE,
 150         HELP_DIFF,
 151         HELP_BOOKMARK,
 152 } zfs_help_t;
 153
 154 typedef struct zfs_command {
 155         const char      *name;
 156         int             (*func)(int argc, char **argv);
 157         zfs_help_t      usage;
 158 } zfs_command_t;
 159
 160 /*
 161  * Master command table.  Each ZFS command has a name, associated function, and
 162  * usage message.  The usage messages need to be internationalized, so we have
 163  * to have a function to return the usage message based on a command index.
 164  *
 165  * These commands are organized according to how they are displayed in the usage
 166  * message.  An empty command (one with a NULL name) indicates an empty line in
 167  * the generic usage message.
 168  */
 169 static zfs_command_t command_table[] = {
 170         { "create",     zfs_do_create,          HELP_CREATE             },
 171         { "destroy",    zfs_do_destroy,         HELP_DESTROY            },
 172         { NULL },
 173         { "snapshot",   zfs_do_snapshot,        HELP_SNAPSHOT           },
 174         { "rollback",   zfs_do_rollback,        HELP_ROLLBACK           },
 175         { "clone",      zfs_do_clone,           HELP_CLONE              },
 176         { "promote",    zfs_do_promote,         HELP_PROMOTE            },
 177         { "rename",     zfs_do_rename,          HELP_RENAME             },
 178         { "bookmark",   zfs_do_bookmark,        HELP_BOOKMARK           },
 179         { NULL },
 180         { "list",       zfs_do_list,            HELP_LIST               },
 181         { NULL },
 182         { "set",        zfs_do_set,             HELP_SET                },
 183         { "get",        zfs_do_get,             HELP_GET                },
 184         { "inherit",    zfs_do_inherit,         HELP_INHERIT            },
 185         { "upgrade",    zfs_do_upgrade,         HELP_UPGRADE            },
 186         { "userspace",  zfs_do_userspace,       HELP_USERSPACE          },
 187         { "groupspace", zfs_do_userspace,       HELP_GROUPSPACE         },
 188         { NULL },
 189         { "mount",      zfs_do_mount,           HELP_MOUNT              },
 190         { "unmount",    zfs_do_unmount,         HELP_UNMOUNT            },
 191         { "share",      zfs_do_share,           HELP_SHARE              },
 192         { "unshare",    zfs_do_unshare,         HELP_UNSHARE            },
 193         { NULL },
 194         { "send",       zfs_do_send,            HELP_SEND               },
 195         { "receive",    zfs_do_receive,         HELP_RECEIVE            },
 196         { NULL },
 197         { "allow",      zfs_do_allow,           HELP_ALLOW              },
 198         { NULL },
 199         { "unallow",    zfs_do_unallow,         HELP_UNALLOW            },
 200         { NULL },
 201         { "hold",       zfs_do_hold,            HELP_HOLD               },
 202         { "holds",      zfs_do_holds,           HELP_HOLDS              },
 203         { "release",    zfs_do_release,         HELP_RELEASE            },
 204         { "diff",       zfs_do_diff,            HELP_DIFF               },
 205 };
 206
 207 #define NCOMMAND        (sizeof (command_table) / sizeof (command_table[0]))
 208
 209 zfs_command_t *current_command;
 210
 211 static const char *
 212 get_usage(zfs_help_t idx)
 213 {
 214         switch (idx) {
 215         case HELP_CLONE:
 216                 return (gettext("\tclone [-p] [-o property=value] ... "
 217                     "<snapshot> <filesystem|volume>\n"));
 218         case HELP_CREATE:
 219                 return (gettext("\tcreate [-p] [-o property=value] ... "
 220                     "<filesystem>\n"
 221                     "\tcreate [-ps] [-b blocksize] [-o property=value] ... "
 222                     "-V <size> <volume>\n"));
 223         case HELP_DESTROY:
 224                 return (gettext("\tdestroy [-fnpRrv] <filesystem|volume>\n"
 225                     "\tdestroy [-dnpRrv] "
 226                     "<filesystem|volume>@<snap>[%<snap>][,...]\n"
 227                     "\tdestroy <filesystem|volume>#<bookmark>\n"));
 228         case HELP_GET:
 229                 return (gettext("\tget [-rHp] [-d max] "
 230                     "[-o \"all\" | field[,...]]\n"
 231                     "\t    [-t type[,...]] [-s source[,...]]\n"
 232                     "\t    <\"all\" | property[,...]> "
 233                     "[filesystem|volume|snapshot] ...\n"));
 234         case HELP_INHERIT:
 235                 return (gettext("\tinherit [-rS] <property> "
 236                     "<filesystem|volume|snapshot> ...\n"));
 237         case HELP_UPGRADE:
 238                 return (gettext("\tupgrade [-v]\n"
 239                     "\tupgrade [-r] [-V version] <-a | filesystem ...>\n"));
 240         case HELP_LIST:
 241                 return (gettext("\tlist [-Hp] [-r|-d max] [-o property[,...]] "
 242                     "[-s property]...\n\t    [-S property]... [-t type[,...]] "
 243                     "[filesystem|volume|snapshot] ...\n"));
 244         case HELP_MOUNT:
 245                 return (gettext("\tmount\n"
 246                     "\tmount [-vO] [-o opts] <-a | filesystem>\n"));
 247         case HELP_PROMOTE:
 248                 return (gettext("\tpromote <clone-filesystem>\n"));
 249         case HELP_RECEIVE:
 250                 return (gettext("\treceive [-vnFu] <filesystem|volume|"
 251                 "snapshot>\n"
 252                 "\treceive [-vnFu] [-d | -e] <filesystem>\n"));
 253         case HELP_RENAME:
 254                 return (gettext("\trename [-f] <filesystem|volume|snapshot> "
 255                     "<filesystem|volume|snapshot>\n"
 256                     "\trename [-f] -p <filesystem|volume> <filesystem|volume>\n"
 257                     "\trename -r <snapshot> <snapshot>\n"));
 258         case HELP_ROLLBACK:
 259                 return (gettext("\trollback [-rRf] <snapshot>\n"));
 260         case HELP_SEND:
 261                 return (gettext("\tsend [-DnPpRvLe] [-[iI] snapshot] "
 262                     "<snapshot>\n"
 263                     "\tsend [-Le] [-i snapshot|bookmark] "
 264                     "<filesystem|volume|snapshot>\n"));
 265         case HELP_SET:
 266                 return (gettext("\tset <property=value> "
 267                     "<filesystem|volume|snapshot> ...\n"));
 268         case HELP_SHARE:
 269                 return (gettext("\tshare <-a | filesystem>\n"));
 270         case HELP_SNAPSHOT:
 271                 return (gettext("\tsnapshot|snap [-r] [-o property=value] ... "
 272                     "<filesystem|volume>@<snap> ...\n"));
 273         case HELP_UNMOUNT:
 274                 return (gettext("\tunmount [-f] "
 275                     "<-a | filesystem|mountpoint>\n"));
 276         case HELP_UNSHARE:
 277                 return (gettext("\tunshare "
 278                     "<-a | filesystem|mountpoint>\n"));
 279         case HELP_ALLOW:
 280                 return (gettext("\tallow <filesystem|volume>\n"
 281                     "\tallow [-ldug] "
 282                     "<\"everyone\"|user|group>[,...] <perm|@setname>[,...]\n"
 283                     "\t    <filesystem|volume>\n"
 284                     "\tallow [-ld] -e <perm|@setname>[,...] "
 285                     "<filesystem|volume>\n"
 286                     "\tallow -c <perm|@setname>[,...] <filesystem|volume>\n"
 287                     "\tallow -s @setname <perm|@setname>[,...] "
 288                     "<filesystem|volume>\n"));
 289         case HELP_UNALLOW:
 290                 return (gettext("\tunallow [-rldug] "
 291                     "<\"everyone\"|user|group>[,...]\n"
 292                     "\t    [<perm|@setname>[,...]] <filesystem|volume>\n"
 293                     "\tunallow [-rld] -e [<perm|@setname>[,...]] "
 294                     "<filesystem|volume>\n"
 295                     "\tunallow [-r] -c [<perm|@setname>[,...]] "
 296                     "<filesystem|volume>\n"
 297                     "\tunallow [-r] -s @setname [<perm|@setname>[,...]] "
 298                     "<filesystem|volume>\n"));
 299         case HELP_USERSPACE:
 300                 return (gettext("\tuserspace [-Hinp] [-o field[,...]] "
 301                     "[-s field] ...\n"
 302                     "\t    [-S field] ... [-t type[,...]] "
 303                     "<filesystem|snapshot>\n"));
 304         case HELP_GROUPSPACE:
 305                 return (gettext("\tgroupspace [-Hinp] [-o field[,...]] "
 306                     "[-s field] ...\n"
 307                     "\t    [-S field] ... [-t type[,...]] "
 308                     "<filesystem|snapshot>\n"));
 309         case HELP_HOLD:
 310                 return (gettext("\thold [-r] <tag> <snapshot> ...\n"));
 311         case HELP_HOLDS:
 312                 return (gettext("\tholds [-r] <snapshot> ...\n"));
 313         case HELP_RELEASE:
 314                 return (gettext("\trelease [-r] <tag> <snapshot> ...\n"));
 315         case HELP_DIFF:
 316                 return (gettext("\tdiff [-FHt] <snapshot> "
 317                     "[snapshot|filesystem]\n"));
 318         case HELP_BOOKMARK:
 319                 return (gettext("\tbookmark <snapshot> <bookmark>\n"));
 320         }
 321
 322         abort();
 323         /* NOTREACHED */
 324 }
 325
 326 void
 327 nomem(void)
 328 {
 329         (void) fprintf(stderr, gettext("internal error: out of memory\n"));
 330         exit(1);
 331 }
 332
 333 /*
 334  * Utility function to guarantee malloc() success.
 335  */
 336
 337 void *
 338 safe_malloc(size_t size)
 339 {
 340         void *data;
 341
 342         if ((data = calloc(1, size)) == NULL)
 343                 nomem();
 344
 345         return (data);
 346 }
 347
 348 static char *
 349 safe_strdup(char *str)
 350 {
 351         char *dupstr = strdup(str);
 352
 353         if (dupstr == NULL)
 354                 nomem();
 355
 356         return (dupstr);
 357 }
 358
 359 /*
 360  * Callback routine that will print out information for each of
 361  * the properties.
 362  */
 363 static int
 364 usage_prop_cb(int prop, void *cb)
 365 {
 366         FILE *fp = cb;
 367
 368         (void) fprintf(fp, "\t%-15s ", zfs_prop_to_name(prop));
 369
 370         if (zfs_prop_readonly(prop))
 371                 (void) fprintf(fp, " NO    ");
 372         else
 373                 (void) fprintf(fp, "YES    ");
 374
 375         if (zfs_prop_inheritable(prop))
 376                 (void) fprintf(fp, "  YES   ");
 377         else
 378                 (void) fprintf(fp, "   NO   ");
 379
 380         if (zfs_prop_values(prop) == NULL)
 381                 (void) fprintf(fp, "-\n");
 382         else
 383                 (void) fprintf(fp, "%s\n", zfs_prop_values(prop));
 384
 385         return (ZPROP_CONT);
 386 }
 387
 388 /*
 389  * Display usage message.  If we're inside a command, display only the usage for
 390  * that command.  Otherwise, iterate over the entire command table and display
 391  * a complete usage message.
 392  */
 393 static void
 394 usage(boolean_t requested)
 395 {
 396         int i;
 397         boolean_t show_properties = B_FALSE;
 398         FILE *fp = requested ? stdout : stderr;
 399
 400         if (current_command == NULL) {
 401
 402                 (void) fprintf(fp, gettext("usage: zfs command args ...\n"));
 403                 (void) fprintf(fp,
 404                     gettext("where 'command' is one of the following:\n\n"));
 405
 406                 for (i = 0; i < NCOMMAND; i++) {
 407                         if (command_table[i].name == NULL)
 408                                 (void) fprintf(fp, "\n");
 409                         else
 410                                 (void) fprintf(fp, "%s",
 411                                     get_usage(command_table[i].usage));
 412                 }
 413
 414                 (void) fprintf(fp, gettext("\nEach dataset is of the form: "
 415                     "pool/[dataset/]*dataset[@name]\n"));
 416         } else {
 417                 (void) fprintf(fp, gettext("usage:\n"));
 418                 (void) fprintf(fp, "%s", get_usage(current_command->usage));
 419         }
 420
 421         if (current_command != NULL &&
 422             (strcmp(current_command->name, "set") == 0 ||
 423             strcmp(current_command->name, "get") == 0 ||
 424             strcmp(current_command->name, "inherit") == 0 ||
 425             strcmp(current_command->name, "list") == 0))
 426                 show_properties = B_TRUE;
 427
 428         if (show_properties) {
 429                 (void) fprintf(fp,
 430                     gettext("\nThe following properties are supported:\n"));
 431
 432                 (void) fprintf(fp, "\n\t%-14s %s  %s   %s\n\n",
 433                     "PROPERTY", "EDIT", "INHERIT", "VALUES");
 434
 435                 /* Iterate over all properties */
 436                 (void) zprop_iter(usage_prop_cb, fp, B_FALSE, B_TRUE,
 437                     ZFS_TYPE_DATASET);
 438
 439                 (void) fprintf(fp, "\t%-15s ", "userused@...");
 440                 (void) fprintf(fp, " NO       NO   <size>\n");
 441                 (void) fprintf(fp, "\t%-15s ", "groupused@...");
 442                 (void) fprintf(fp, " NO       NO   <size>\n");
 443                 (void) fprintf(fp, "\t%-15s ", "userquota@...");
 444                 (void) fprintf(fp, "YES       NO   <size> | none\n");
 445                 (void) fprintf(fp, "\t%-15s ", "groupquota@...");
 446                 (void) fprintf(fp, "YES       NO   <size> | none\n");
 447                 (void) fprintf(fp, "\t%-15s ", "written@<snap>");
 448                 (void) fprintf(fp, " NO       NO   <size>\n");
 449
 450                 (void) fprintf(fp, gettext("\nSizes are specified in bytes "
 451                     "with standard units such as K, M, G, etc.\n"));
 452                 (void) fprintf(fp, gettext("\nUser-defined properties can "
 453                     "be specified by using a name containing a colon (:).\n"));
 454                 (void) fprintf(fp, gettext("\nThe {user|group}{used|quota}@ "
 455                     "properties must be appended with\n"
 456                     "a user or group specifier of one of these forms:\n"
 457                     "    POSIX name      (eg: \"matt\")\n"
 458                     "    POSIX id        (eg: \"126829\")\n"
 459                     "    SMB name@domain (eg: \"matt@sun\")\n"
 460                     "    SMB SID         (eg: \"S-1-234-567-89\")\n"));
 461         } else {
 462                 (void) fprintf(fp,
 463                     gettext("\nFor the property list, run: %s\n"),
 464                     "zfs set|get");
 465                 (void) fprintf(fp,
 466                     gettext("\nFor the delegated permission list, run: %s\n"),
 467                     "zfs allow|unallow");
 468         }
 469
 470         /*
 471          * See comments at end of main().
 472          */
 473         if (getenv("ZFS_ABORT") != NULL) {
 474                 (void) printf("dumping core by request\n");
 475                 abort();
 476         }
 477
 478         exit(requested ? 0 : 2);
 479 }
 480
 481 static int
 482 parseprop(nvlist_t *props)
 483 {
 484         char *propname = optarg;
 485         char *propval, *strval;
 486
 487         if ((propval = strchr(propname, '=')) == NULL) {
 488                 (void) fprintf(stderr, gettext("missing "
 489                     "'=' for -o option\n"));
 490                 return (-1);
 491         }
 492         *propval = '\0';
 493         propval++;
 494         if (nvlist_lookup_string(props, propname, &strval) == 0) {
 495                 (void) fprintf(stderr, gettext("property '%s' "
 496                     "specified multiple times\n"), propname);
 497                 return (-1);
 498         }
 499         if (nvlist_add_string(props, propname, propval) != 0)
 500                 nomem();
 501         return (0);
 502 }
 503
 504 static int
 505 parse_depth(char *opt, int *flags)
 506 {
 507         char *tmp;
 508         int depth;
 509
 510         depth = (int)strtol(opt, &tmp, 0);
 511         if (*tmp) {
 512                 (void) fprintf(stderr,
 513                     gettext("%s is not an integer\n"), optarg);
 514                 usage(B_FALSE);
 515         }
 516         if (depth < 0) {
 517                 (void) fprintf(stderr,
 518                     gettext("Depth can not be negative.\n"));
 519                 usage(B_FALSE);
 520         }
 521         *flags |= (ZFS_ITER_DEPTH_LIMIT|ZFS_ITER_RECURSE);
 522         return (depth);
 523 }
 524
 525 #define PROGRESS_DELAY 2                /* seconds */
 526
 527 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";
 528 static time_t pt_begin;
 529 static char *pt_header = NULL;
 530 static boolean_t pt_shown;
 531
 532 static void
 533 start_progress_timer(void)
 534 {
 535         pt_begin = time(NULL) + PROGRESS_DELAY;
 536         pt_shown = B_FALSE;
 537 }
 538
 539 static void
 540 set_progress_header(char *header)
 541 {
 542         assert(pt_header == NULL);
 543         pt_header = safe_strdup(header);
 544         if (pt_shown) {
 545                 (void) printf("%s: ", header);
 546                 (void) fflush(stdout);
 547         }
 548 }
 549
 550 static void
 551 update_progress(char *update)
 552 {
 553         if (!pt_shown && time(NULL) > pt_begin) {
 554                 int len = strlen(update);
 555
 556                 (void) printf("%s: %s%*.*s", pt_header, update, len, len,
 557                     pt_reverse);
 558                 (void) fflush(stdout);
 559                 pt_shown = B_TRUE;
 560         } else if (pt_shown) {
 561                 int len = strlen(update);
 562
 563                 (void) printf("%s%*.*s", update, len, len, pt_reverse);
 564                 (void) fflush(stdout);
 565         }
 566 }
 567
 568 static void
 569 finish_progress(char *done)
 570 {
 571         if (pt_shown) {
 572                 (void) printf("%s\n", done);
 573                 (void) fflush(stdout);
 574         }
 575         free(pt_header);
 576         pt_header = NULL;
 577 }
 578
 579 /*
 580  * zfs clone [-p] [-o prop=value] ... <snap> <fs | vol>
 581  *
 582  * Given an existing dataset, create a writable copy whose initial contents
 583  * are the same as the source.  The newly created dataset maintains a
 584  * dependency on the original; the original cannot be destroyed so long as
 585  * the clone exists.
 586  *
 587  * The '-p' flag creates all the non-existing ancestors of the target first.
 588  */
 589 static int
 590 zfs_do_clone(int argc, char **argv)
 591 {
 592         zfs_handle_t *zhp = NULL;
 593         boolean_t parents = B_FALSE;
 594         nvlist_t *props;
 595         int ret = 0;
 596         int c;
 597
 598         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
 599                 nomem();
 600
 601         /* check options */
 602         while ((c = getopt(argc, argv, "o:p")) != -1) {
 603                 switch (c) {
 604                 case 'o':
 605                         if (parseprop(props))
 606                                 return (1);
 607                         break;
 608                 case 'p':
 609                         parents = B_TRUE;
 610                         break;
 611                 case '?':
 612                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
 613                             optopt);
 614                         goto usage;
 615                 }
 616         }
 617
 618         argc -= optind;
 619         argv += optind;
 620
 621         /* check number of arguments */
 622         if (argc < 1) {
 623                 (void) fprintf(stderr, gettext("missing source dataset "
 624                     "argument\n"));
 625                 goto usage;
 626         }
 627         if (argc < 2) {
 628                 (void) fprintf(stderr, gettext("missing target dataset "
 629                     "argument\n"));
 630                 goto usage;
 631         }
 632         if (argc > 2) {
 633                 (void) fprintf(stderr, gettext("too many arguments\n"));
 634                 goto usage;
 635         }
 636
 637         /* open the source dataset */
 638         if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
 639                 return (1);
 640
 641         if (parents && zfs_name_valid(argv[1], ZFS_TYPE_FILESYSTEM |
 642             ZFS_TYPE_VOLUME)) {
 643                 /*
 644                  * Now create the ancestors of the target dataset.  If the
 645                  * target already exists and '-p' option was used we should not
 646                  * complain.
 647                  */
 648                 if (zfs_dataset_exists(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM |
 649                     ZFS_TYPE_VOLUME))
 650                         return (0);
 651                 if (zfs_create_ancestors(g_zfs, argv[1]) != 0)
 652                         return (1);
 653         }
 654
 655         /* pass to libzfs */
 656         ret = zfs_clone(zhp, argv[1], props);
 657
 658         /* create the mountpoint if necessary */
 659         if (ret == 0) {
 660                 zfs_handle_t *clone;
 661                 int canmount = ZFS_CANMOUNT_OFF;
 662
 663                 if (log_history) {
 664                         (void) zpool_log_history(g_zfs, history_str);
 665                         log_history = B_FALSE;
 666                 }
 667
 668                 clone = zfs_open(g_zfs, argv[1], ZFS_TYPE_DATASET);
 669                 if (clone != NULL) {
 670                         /*
 671                          * if the user doesn't want the dataset automatically
 672                          * mounted, then skip the mount/share step.
 673                          */
 674                         if (zfs_prop_valid_for_type(ZFS_PROP_CANMOUNT,
 675                             zfs_get_type(clone), B_FALSE))
 676                                 canmount = zfs_prop_get_int(clone,
 677                                     ZFS_PROP_CANMOUNT);
 678
 679                         if (zfs_get_type(clone) != ZFS_TYPE_VOLUME &&
 680                             canmount == ZFS_CANMOUNT_ON)
 681                                 if ((ret = zfs_mount(clone, NULL, 0)) == 0)
 682                                         ret = zfs_share(clone);
 683                         zfs_close(clone);
 684                 }
 685         }
 686
 687         zfs_close(zhp);
 688         nvlist_free(props);
 689
 690         return (!!ret);
 691
 692 usage:
 693         if (zhp)
 694                 zfs_close(zhp);
 695         nvlist_free(props);
 696         usage(B_FALSE);
 697         return (-1);
 698 }
 699
 700 /*
 701  * zfs create [-p] [-o prop=value] ... fs
 702  * zfs create [-ps] [-b blocksize] [-o prop=value] ... -V vol size
 703  *
 704  * Create a new dataset.  This command can be used to create filesystems
 705  * and volumes.  Snapshot creation is handled by 'zfs snapshot'.
 706  * For volumes, the user must specify a size to be used.
 707  *
 708  * The '-s' flag applies only to volumes, and indicates that we should not try
 709  * to set the reservation for this volume.  By default we set a reservation
 710  * equal to the size for any volume.  For pools with SPA_VERSION >=
 711  * SPA_VERSION_REFRESERVATION, we set a refreservation instead.
 712  *
 713  * The '-p' flag creates all the non-existing ancestors of the target first.
 714  */
 715 static int
 716 zfs_do_create(int argc, char **argv)
 717 {
 718         zfs_type_t type = ZFS_TYPE_FILESYSTEM;
 719         zfs_handle_t *zhp = NULL;
 720         uint64_t volsize = 0;
 721         int c;
 722         boolean_t noreserve = B_FALSE;
 723         boolean_t bflag = B_FALSE;
 724         boolean_t parents = B_FALSE;
 725         int ret = 1;
 726         nvlist_t *props;
 727         uint64_t intval;
 728         int canmount = ZFS_CANMOUNT_OFF;
 729
 730         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
 731                 nomem();
 732
 733         /* check options */
 734         while ((c = getopt(argc, argv, ":V:b:so:p")) != -1) {
 735                 switch (c) {
 736                 case 'V':
 737                         type = ZFS_TYPE_VOLUME;
 738                         if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
 739                                 (void) fprintf(stderr, gettext("bad volume "
 740                                     "size '%s': %s\n"), optarg,
 741                                     libzfs_error_description(g_zfs));
 742                                 goto error;
 743                         }
 744
 745                         if (nvlist_add_uint64(props,
 746                             zfs_prop_to_name(ZFS_PROP_VOLSIZE), intval) != 0)
 747                                 nomem();
 748                         volsize = intval;
 749                         break;
 750                 case 'p':
 751                         parents = B_TRUE;
 752                         break;
 753                 case 'b':
 754                         bflag = B_TRUE;
 755                         if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
 756                                 (void) fprintf(stderr, gettext("bad volume "
 757                                     "block size '%s': %s\n"), optarg,
 758                                     libzfs_error_description(g_zfs));
 759                                 goto error;
 760                         }
 761
 762                         if (nvlist_add_uint64(props,
 763                             zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
 764                             intval) != 0)
 765                                 nomem();
 766                         break;
 767                 case 'o':
 768                         if (parseprop(props))
 769                                 goto error;
 770                         break;
 771                 case 's':
 772                         noreserve = B_TRUE;
 773                         break;
 774                 case ':':
 775                         (void) fprintf(stderr, gettext("missing size "
 776                             "argument\n"));
 777                         goto badusage;
 778                         break;
 779                 case '?':
 780                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
 781                             optopt);
 782                         goto badusage;
 783                 }
 784         }
 785
 786         if ((bflag || noreserve) && type != ZFS_TYPE_VOLUME) {
 787                 (void) fprintf(stderr, gettext("'-s' and '-b' can only be "
 788                     "used when creating a volume\n"));
 789                 goto badusage;
 790         }
 791
 792         argc -= optind;
 793         argv += optind;
 794
 795         /* check number of arguments */
 796         if (argc == 0) {
 797                 (void) fprintf(stderr, gettext("missing %s argument\n"),
 798                     zfs_type_to_name(type));
 799                 goto badusage;
 800         }
 801         if (argc > 1) {
 802                 (void) fprintf(stderr, gettext("too many arguments\n"));
 803                 goto badusage;
 804         }
 805
 806         if (type == ZFS_TYPE_VOLUME && !noreserve) {
 807                 zpool_handle_t *zpool_handle;
 808                 uint64_t spa_version;
 809                 char *p;
 810                 zfs_prop_t resv_prop;
 811                 char *strval;
 812
 813                 if ((p = strchr(argv[0], '/')))
 814                         *p = '\0';
 815                 zpool_handle = zpool_open(g_zfs, argv[0]);
 816                 if (p != NULL)
 817                         *p = '/';
 818                 if (zpool_handle == NULL)
 819                         goto error;
 820                 spa_version = zpool_get_prop_int(zpool_handle,
 821                     ZPOOL_PROP_VERSION, NULL);
 822                 zpool_close(zpool_handle);
 823                 if (spa_version >= SPA_VERSION_REFRESERVATION)
 824                         resv_prop = ZFS_PROP_REFRESERVATION;
 825                 else
 826                         resv_prop = ZFS_PROP_RESERVATION;
 827                 volsize = zvol_volsize_to_reservation(volsize, props);
 828
 829                 if (nvlist_lookup_string(props, zfs_prop_to_name(resv_prop),
 830                     &strval) != 0) {
 831                         if (nvlist_add_uint64(props,
 832                             zfs_prop_to_name(resv_prop), volsize) != 0) {
 833                                 nvlist_free(props);
 834                                 nomem();
 835                         }
 836                 }
 837         }
 838
 839         if (parents && zfs_name_valid(argv[0], type)) {
 840                 /*
 841                  * Now create the ancestors of target dataset.  If the target
 842                  * already exists and '-p' option was used we should not
 843                  * complain.
 844                  */
 845                 if (zfs_dataset_exists(g_zfs, argv[0], type)) {
 846                         ret = 0;
 847                         goto error;
 848                 }
 849                 if (zfs_create_ancestors(g_zfs, argv[0]) != 0)
 850                         goto error;
 851         }
 852
 853         /* pass to libzfs */
 854         if (zfs_create(g_zfs, argv[0], type, props) != 0)
 855                 goto error;
 856
 857         if (log_history) {
 858                 (void) zpool_log_history(g_zfs, history_str);
 859                 log_history = B_FALSE;
 860         }
 861
 862         if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL)
 863                 goto error;
 864
 865         ret = 0;
 866         /*
 867          * if the user doesn't want the dataset automatically mounted,
 868          * then skip the mount/share step
 869          */
 870         if (zfs_prop_valid_for_type(ZFS_PROP_CANMOUNT, type, B_FALSE))
 871                 canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT);
 872
 873         /*
 874          * Mount and/or share the new filesystem as appropriate.  We provide a
 875          * verbose error message to let the user know that their filesystem was
 876          * in fact created, even if we failed to mount or share it.
 877          */
 878         if (canmount == ZFS_CANMOUNT_ON) {
 879                 if (zfs_mount(zhp, NULL, 0) != 0) {
 880                         (void) fprintf(stderr, gettext("filesystem "
 881                             "successfully created, but not mounted\n"));
 882                         ret = 1;
 883                 } else if (zfs_share(zhp) != 0) {
 884                         (void) fprintf(stderr, gettext("filesystem "
 885                             "successfully created, but not shared\n"));
 886                         ret = 1;
 887                 }
 888         }
 889
 890 error:
 891         if (zhp)
 892                 zfs_close(zhp);
 893         nvlist_free(props);
 894         return (ret);
 895 badusage:
 896         nvlist_free(props);
 897         usage(B_FALSE);
 898         return (2);
 899 }
 900
 901 /*
 902  * zfs destroy [-rRf] <fs, vol>
 903  * zfs destroy [-rRd] <snap>
 904  *
 905  *      -r      Recursively destroy all children
 906  *      -R      Recursively destroy all dependents, including clones
 907  *      -f      Force unmounting of any dependents
 908  *      -d      If we can't destroy now, mark for deferred destruction
 909  *
 910  * Destroys the given dataset.  By default, it will unmount any filesystems,
 911  * and refuse to destroy a dataset that has any dependents.  A dependent can
 912  * either be a child, or a clone of a child.
 913  */
 914 typedef struct destroy_cbdata {
 915         boolean_t       cb_first;
 916         boolean_t       cb_force;
 917         boolean_t       cb_recurse;
 918         boolean_t       cb_error;
 919         boolean_t       cb_doclones;
 920         zfs_handle_t    *cb_target;
 921         boolean_t       cb_defer_destroy;
 922         boolean_t       cb_verbose;
 923         boolean_t       cb_parsable;
 924         boolean_t       cb_dryrun;
 925         nvlist_t        *cb_nvl;
 926         nvlist_t        *cb_batchedsnaps;
 927
 928         /* first snap in contiguous run */
 929         char            *cb_firstsnap;
 930         /* previous snap in contiguous run */
 931         char            *cb_prevsnap;
 932         int64_t         cb_snapused;
 933         char            *cb_snapspec;
 934         char            *cb_bookmark;
 935 } destroy_cbdata_t;
 936
 937 /*
 938  * Check for any dependents based on the '-r' or '-R' flags.
 939  */
 940 static int
 941 destroy_check_dependent(zfs_handle_t *zhp, void *data)
 942 {
 943         destroy_cbdata_t *cbp = data;
 944         const char *tname = zfs_get_name(cbp->cb_target);
 945         const char *name = zfs_get_name(zhp);
 946
 947         if (strncmp(tname, name, strlen(tname)) == 0 &&
 948             (name[strlen(tname)] == '/' || name[strlen(tname)] == '@')) {
 949                 /*
 950                  * This is a direct descendant, not a clone somewhere else in
 951                  * the hierarchy.
 952                  */
 953                 if (cbp->cb_recurse)
 954                         goto out;
 955
 956                 if (cbp->cb_first) {
 957                         (void) fprintf(stderr, gettext("cannot destroy '%s': "
 958                             "%s has children\n"),
 959                             zfs_get_name(cbp->cb_target),
 960                             zfs_type_to_name(zfs_get_type(cbp->cb_target)));
 961                         (void) fprintf(stderr, gettext("use '-r' to destroy "
 962                             "the following datasets:\n"));
 963                         cbp->cb_first = B_FALSE;
 964                         cbp->cb_error = B_TRUE;
 965                 }
 966
 967                 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
 968         } else {
 969                 /*
 970                  * This is a clone.  We only want to report this if the '-r'
 971                  * wasn't specified, or the target is a snapshot.
 972                  */
 973                 if (!cbp->cb_recurse &&
 974                     zfs_get_type(cbp->cb_target) != ZFS_TYPE_SNAPSHOT)
 975                         goto out;
 976
 977                 if (cbp->cb_first) {
 978                         (void) fprintf(stderr, gettext("cannot destroy '%s': "
 979                             "%s has dependent clones\n"),
 980                             zfs_get_name(cbp->cb_target),
 981                             zfs_type_to_name(zfs_get_type(cbp->cb_target)));
 982                         (void) fprintf(stderr, gettext("use '-R' to destroy "
 983                             "the following datasets:\n"));
 984                         cbp->cb_first = B_FALSE;
 985                         cbp->cb_error = B_TRUE;
 986                         cbp->cb_dryrun = B_TRUE;
 987                 }
 988
 989                 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
 990         }
 991
 992 out:
 993         zfs_close(zhp);
 994         return (0);
 995 }
 996
 997 static int
 998 destroy_callback(zfs_handle_t *zhp, void *data)
 999 {
1000         destroy_cbdata_t *cb = data;
1001         const char *name = zfs_get_name(zhp);
1002
1003         if (cb->cb_verbose) {
1004                 if (cb->cb_parsable) {
1005                         (void) printf("destroy\t%s\n", name);
1006                 } else if (cb->cb_dryrun) {
1007                         (void) printf(gettext("would destroy %s\n"),
1008                             name);
1009                 } else {
1010                         (void) printf(gettext("will destroy %s\n"),
1011                             name);
1012                 }
1013         }
1014
1015         /*
1016          * Ignore pools (which we've already flagged as an error before getting
1017          * here).
1018          */
1019         if (strchr(zfs_get_name(zhp), '/') == NULL &&
1020             zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
1021                 zfs_close(zhp);
1022                 return (0);
1023         }
1024         if (cb->cb_dryrun) {
1025                 zfs_close(zhp);
1026                 return (0);
1027         }
1028
1029         /*
1030          * We batch up all contiguous snapshots (even of different
1031          * filesystems) and destroy them with one ioctl.  We can't
1032          * simply do all snap deletions and then all fs deletions,
1033          * because we must delete a clone before its origin.
1034          */
1035         if (zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT) {
1036                 fnvlist_add_boolean(cb->cb_batchedsnaps, name);
1037         } else {
1038                 int error = zfs_destroy_snaps_nvl(g_zfs,
1039                     cb->cb_batchedsnaps, B_FALSE);
1040                 fnvlist_free(cb->cb_batchedsnaps);
1041                 cb->cb_batchedsnaps = fnvlist_alloc();
1042
1043                 if (error != 0 ||
1044                     zfs_unmount(zhp, NULL, cb->cb_force ? MS_FORCE : 0) != 0 ||
1045                     zfs_destroy(zhp, cb->cb_defer_destroy) != 0) {
1046                         zfs_close(zhp);
1047                         return (-1);
1048                 }
1049         }
1050
1051         zfs_close(zhp);
1052         return (0);
1053 }
1054
1055 static int
1056 destroy_print_cb(zfs_handle_t *zhp, void *arg)
1057 {
1058         destroy_cbdata_t *cb = arg;
1059         const char *name = zfs_get_name(zhp);
1060         int err = 0;
1061
1062         if (nvlist_exists(cb->cb_nvl, name)) {
1063                 if (cb->cb_firstsnap == NULL)
1064                         cb->cb_firstsnap = strdup(name);
1065                 if (cb->cb_prevsnap != NULL)
1066                         free(cb->cb_prevsnap);
1067                 /* this snap continues the current range */
1068                 cb->cb_prevsnap = strdup(name);
1069                 if (cb->cb_firstsnap == NULL || cb->cb_prevsnap == NULL)
1070                         nomem();
1071                 if (cb->cb_verbose) {
1072                         if (cb->cb_parsable) {
1073                                 (void) printf("destroy\t%s\n", name);
1074                         } else if (cb->cb_dryrun) {
1075                                 (void) printf(gettext("would destroy %s\n"),
1076                                     name);
1077                         } else {
1078                                 (void) printf(gettext("will destroy %s\n"),
1079                                     name);
1080                         }
1081                 }
1082         } else if (cb->cb_firstsnap != NULL) {
1083                 /* end of this range */
1084                 uint64_t used = 0;
1085                 err = lzc_snaprange_space(cb->cb_firstsnap,
1086                     cb->cb_prevsnap, &used);
1087                 cb->cb_snapused += used;
1088                 free(cb->cb_firstsnap);
1089                 cb->cb_firstsnap = NULL;
1090                 free(cb->cb_prevsnap);
1091                 cb->cb_prevsnap = NULL;
1092         }
1093         zfs_close(zhp);
1094         return (err);
1095 }
1096
1097 static int
1098 destroy_print_snapshots(zfs_handle_t *fs_zhp, destroy_cbdata_t *cb)
1099 {
1100         int err;
1101         assert(cb->cb_firstsnap == NULL);
1102         assert(cb->cb_prevsnap == NULL);
1103         err = zfs_iter_snapshots_sorted(fs_zhp, destroy_print_cb, cb);
1104         if (cb->cb_firstsnap != NULL) {
1105                 uint64_t used = 0;
1106                 if (err == 0) {
1107                         err = lzc_snaprange_space(cb->cb_firstsnap,
1108                             cb->cb_prevsnap, &used);
1109                 }
1110                 cb->cb_snapused += used;
1111                 free(cb->cb_firstsnap);
1112                 cb->cb_firstsnap = NULL;
1113                 free(cb->cb_prevsnap);
1114                 cb->cb_prevsnap = NULL;
1115         }
1116         return (err);
1117 }
1118
1119 static int
1120 snapshot_to_nvl_cb(zfs_handle_t *zhp, void *arg)
1121 {
1122         destroy_cbdata_t *cb = arg;
1123         int err = 0;
1124
1125         /* Check for clones. */
1126         if (!cb->cb_doclones && !cb->cb_defer_destroy) {
1127                 cb->cb_target = zhp;
1128                 cb->cb_first = B_TRUE;
1129                 err = zfs_iter_dependents(zhp, B_TRUE,
1130                     destroy_check_dependent, cb);
1131         }
1132
1133         if (err == 0) {
1134                 if (nvlist_add_boolean(cb->cb_nvl, zfs_get_name(zhp)))
1135                         nomem();
1136         }
1137         zfs_close(zhp);
1138         return (err);
1139 }
1140
1141 static int
1142 gather_snapshots(zfs_handle_t *zhp, void *arg)
1143 {
1144         destroy_cbdata_t *cb = arg;
1145         int err = 0;
1146
1147         err = zfs_iter_snapspec(zhp, cb->cb_snapspec, snapshot_to_nvl_cb, cb);
1148         if (err == ENOENT)
1149                 err = 0;
1150         if (err != 0)
1151                 goto out;
1152
1153         if (cb->cb_verbose) {
1154                 err = destroy_print_snapshots(zhp, cb);
1155                 if (err != 0)
1156                         goto out;
1157         }
1158
1159         if (cb->cb_recurse)
1160                 err = zfs_iter_filesystems(zhp, gather_snapshots, cb);
1161
1162 out:
1163         zfs_close(zhp);
1164         return (err);
1165 }
1166
1167 static int
1168 destroy_clones(destroy_cbdata_t *cb)
1169 {
1170         nvpair_t *pair;
1171         for (pair = nvlist_next_nvpair(cb->cb_nvl, NULL);
1172             pair != NULL;
1173             pair = nvlist_next_nvpair(cb->cb_nvl, pair)) {
1174                 zfs_handle_t *zhp = zfs_open(g_zfs, nvpair_name(pair),
1175                     ZFS_TYPE_SNAPSHOT);
1176                 if (zhp != NULL) {
1177                         boolean_t defer = cb->cb_defer_destroy;
1178                         int err;
1179
1180                         /*
1181                          * We can't defer destroy non-snapshots, so set it to
1182                          * false while destroying the clones.
1183                          */
1184                         cb->cb_defer_destroy = B_FALSE;
1185                         err = zfs_iter_dependents(zhp, B_FALSE,
1186                             destroy_callback, cb);
1187                         cb->cb_defer_destroy = defer;
1188                         zfs_close(zhp);
1189                         if (err != 0)
1190                                 return (err);
1191                 }
1192         }
1193         return (0);
1194 }
1195
1196 static int
1197 zfs_do_destroy(int argc, char **argv)
1198 {
1199         destroy_cbdata_t cb = { 0 };
1200         int rv = 0;
1201         int err = 0;
1202         int c;
1203         zfs_handle_t *zhp = NULL;
1204         char *at, *pound;
1205         zfs_type_t type = ZFS_TYPE_DATASET;
1206
1207         /* check options */
1208         while ((c = getopt(argc, argv, "vpndfrR")) != -1) {
1209                 switch (c) {
1210                 case 'v':
1211                         cb.cb_verbose = B_TRUE;
1212                         break;
1213                 case 'p':
1214                         cb.cb_verbose = B_TRUE;
1215                         cb.cb_parsable = B_TRUE;
1216                         break;
1217                 case 'n':
1218                         cb.cb_dryrun = B_TRUE;
1219                         break;
1220                 case 'd':
1221                         cb.cb_defer_destroy = B_TRUE;
1222                         type = ZFS_TYPE_SNAPSHOT;
1223                         break;
1224                 case 'f':
1225                         cb.cb_force = B_TRUE;
1226                         break;
1227                 case 'r':
1228                         cb.cb_recurse = B_TRUE;
1229                         break;
1230                 case 'R':
1231                         cb.cb_recurse = B_TRUE;
1232                         cb.cb_doclones = B_TRUE;
1233                         break;
1234                 case '?':
1235                 default:
1236                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1237                             optopt);
1238                         usage(B_FALSE);
1239                 }
1240         }
1241
1242         argc -= optind;
1243         argv += optind;
1244
1245         /* check number of arguments */
1246         if (argc == 0) {
1247                 (void) fprintf(stderr, gettext("missing dataset argument\n"));
1248                 usage(B_FALSE);
1249         }
1250         if (argc > 1) {
1251                 (void) fprintf(stderr, gettext("too many arguments\n"));
1252                 usage(B_FALSE);
1253         }
1254
1255         at = strchr(argv[0], '@');
1256         pound = strchr(argv[0], '#');
1257         if (at != NULL) {
1258
1259                 /* Build the list of snaps to destroy in cb_nvl. */
1260                 cb.cb_nvl = fnvlist_alloc();
1261
1262                 *at = '\0';
1263                 zhp = zfs_open(g_zfs, argv[0],
1264                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
1265                 if (zhp == NULL)
1266                         return (1);
1267
1268                 cb.cb_snapspec = at + 1;
1269                 if (gather_snapshots(zfs_handle_dup(zhp), &cb) != 0 ||
1270                     cb.cb_error) {
1271                         rv = 1;
1272                         goto out;
1273                 }
1274
1275                 if (nvlist_empty(cb.cb_nvl)) {
1276                         (void) fprintf(stderr, gettext("could not find any "
1277                             "snapshots to destroy; check snapshot names.\n"));
1278                         rv = 1;
1279                         goto out;
1280                 }
1281
1282                 if (cb.cb_verbose) {
1283                         char buf[16];
1284                         zfs_nicenum(cb.cb_snapused, buf, sizeof (buf));
1285                         if (cb.cb_parsable) {
1286                                 (void) printf("reclaim\t%llu\n",
1287                                     (u_longlong_t)cb.cb_snapused);
1288                         } else if (cb.cb_dryrun) {
1289                                 (void) printf(gettext("would reclaim %s\n"),
1290                                     buf);
1291                         } else {
1292                                 (void) printf(gettext("will reclaim %s\n"),
1293                                     buf);
1294                         }
1295                 }
1296
1297                 if (!cb.cb_dryrun) {
1298                         if (cb.cb_doclones) {
1299                                 cb.cb_batchedsnaps = fnvlist_alloc();
1300                                 err = destroy_clones(&cb);
1301                                 if (err == 0) {
1302                                         err = zfs_destroy_snaps_nvl(g_zfs,
1303                                             cb.cb_batchedsnaps, B_FALSE);
1304                                 }
1305                                 if (err != 0) {
1306                                         rv = 1;
1307                                         goto out;
1308                                 }
1309                         }
1310                         if (err == 0) {
1311                                 err = zfs_destroy_snaps_nvl(g_zfs, cb.cb_nvl,
1312                                     cb.cb_defer_destroy);
1313                         }
1314                 }
1315
1316                 if (err != 0)
1317                         rv = 1;
1318         } else if (pound != NULL) {
1319                 int err;
1320                 nvlist_t *nvl;
1321
1322                 if (cb.cb_dryrun) {
1323                         (void) fprintf(stderr,
1324                             "dryrun is not supported with bookmark\n");
1325                         return (-1);
1326                 }
1327
1328                 if (cb.cb_defer_destroy) {
1329                         (void) fprintf(stderr,
1330                             "defer destroy is not supported with bookmark\n");
1331                         return (-1);
1332                 }
1333
1334                 if (cb.cb_recurse) {
1335                         (void) fprintf(stderr,
1336                             "recursive is not supported with bookmark\n");
1337                         return (-1);
1338                 }
1339
1340                 if (!zfs_bookmark_exists(argv[0])) {
1341                         (void) fprintf(stderr, gettext("bookmark '%s' "
1342                             "does not exist.\n"), argv[0]);
1343                         return (1);
1344                 }
1345
1346                 nvl = fnvlist_alloc();
1347                 fnvlist_add_boolean(nvl, argv[0]);
1348
1349                 err = lzc_destroy_bookmarks(nvl, NULL);
1350                 if (err != 0) {
1351                         (void) zfs_standard_error(g_zfs, err,
1352                             "cannot destroy bookmark");
1353                 }
1354
1355                 nvlist_free(cb.cb_nvl);
1356
1357                 return (err);
1358         } else {
1359                 /* Open the given dataset */
1360                 if ((zhp = zfs_open(g_zfs, argv[0], type)) == NULL)
1361                         return (1);
1362
1363                 cb.cb_target = zhp;
1364
1365                 /*
1366                  * Perform an explicit check for pools before going any further.
1367                  */
1368                 if (!cb.cb_recurse && strchr(zfs_get_name(zhp), '/') == NULL &&
1369                     zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
1370                         (void) fprintf(stderr, gettext("cannot destroy '%s': "
1371                             "operation does not apply to pools\n"),
1372                             zfs_get_name(zhp));
1373                         (void) fprintf(stderr, gettext("use 'zfs destroy -r "
1374                             "%s' to destroy all datasets in the pool\n"),
1375                             zfs_get_name(zhp));
1376                         (void) fprintf(stderr, gettext("use 'zpool destroy %s' "
1377                             "to destroy the pool itself\n"), zfs_get_name(zhp));
1378                         rv = 1;
1379                         goto out;
1380                 }
1381
1382                 /*
1383                  * Check for any dependents and/or clones.
1384                  */
1385                 cb.cb_first = B_TRUE;
1386                 if (!cb.cb_doclones &&
1387                     zfs_iter_dependents(zhp, B_TRUE, destroy_check_dependent,
1388                     &cb) != 0) {
1389                         rv = 1;
1390                         goto out;
1391                 }
1392
1393                 if (cb.cb_error) {
1394                         rv = 1;
1395                         goto out;
1396                 }
1397
1398                 cb.cb_batchedsnaps = fnvlist_alloc();
1399                 if (zfs_iter_dependents(zhp, B_FALSE, destroy_callback,
1400                     &cb) != 0) {
1401                         rv = 1;
1402                         goto out;
1403                 }
1404
1405                 /*
1406                  * Do the real thing.  The callback will close the
1407                  * handle regardless of whether it succeeds or not.
1408                  */
1409                 err = destroy_callback(zhp, &cb);
1410                 zhp = NULL;
1411                 if (err == 0) {
1412                         err = zfs_destroy_snaps_nvl(g_zfs,
1413                             cb.cb_batchedsnaps, cb.cb_defer_destroy);
1414                 }
1415                 if (err != 0)
1416                         rv = 1;
1417         }
1418
1419 out:
1420         fnvlist_free(cb.cb_batchedsnaps);
1421         fnvlist_free(cb.cb_nvl);
1422         if (zhp != NULL)
1423                 zfs_close(zhp);
1424         return (rv);
1425 }
1426
1427 static boolean_t
1428 is_recvd_column(zprop_get_cbdata_t *cbp)
1429 {
1430         int i;
1431         zfs_get_column_t col;
1432
1433         for (i = 0; i < ZFS_GET_NCOLS &&
1434             (col = cbp->cb_columns[i]) != GET_COL_NONE; i++)
1435                 if (col == GET_COL_RECVD)
1436                         return (B_TRUE);
1437         return (B_FALSE);
1438 }
1439
1440 /*
1441  * zfs get [-rHp] [-o all | field[,field]...] [-s source[,source]...]
1442  *      < all | property[,property]... > < fs | snap | vol > ...
1443  *
1444  *      -r      recurse over any child datasets
1445  *      -H      scripted mode.  Headers are stripped, and fields are separated
1446  *              by tabs instead of spaces.
1447  *      -o      Set of fields to display.  One of "name,property,value,
1448  *              received,source". Default is "name,property,value,source".
1449  *              "all" is an alias for all five.
1450  *      -s      Set of sources to allow.  One of
1451  *              "local,default,inherited,received,temporary,none".  Default is
1452  *              all six.
1453  *      -p      Display values in parsable (literal) format.
1454  *
1455  *  Prints properties for the given datasets.  The user can control which
1456  *  columns to display as well as which property types to allow.
1457  */
1458
1459 /*
1460  * Invoked to display the properties for a single dataset.
1461  */
1462 static int
1463 get_callback(zfs_handle_t *zhp, void *data)
1464 {
1465         char buf[ZFS_MAXPROPLEN];
1466         char rbuf[ZFS_MAXPROPLEN];
1467         zprop_source_t sourcetype;
1468         char source[ZFS_MAXNAMELEN];
1469         zprop_get_cbdata_t *cbp = data;
1470         nvlist_t *user_props = zfs_get_user_props(zhp);
1471         zprop_list_t *pl = cbp->cb_proplist;
1472         nvlist_t *propval;
1473         char *strval;
1474         char *sourceval;
1475         boolean_t received = is_recvd_column(cbp);
1476
1477         for (; pl != NULL; pl = pl->pl_next) {
1478                 char *recvdval = NULL;
1479                 /*
1480                  * Skip the special fake placeholder.  This will also skip over
1481                  * the name property when 'all' is specified.
1482                  */
1483                 if (pl->pl_prop == ZFS_PROP_NAME &&
1484                     pl == cbp->cb_proplist)
1485                         continue;
1486
1487                 if (pl->pl_prop != ZPROP_INVAL) {
1488                         if (zfs_prop_get(zhp, pl->pl_prop, buf,
1489                             sizeof (buf), &sourcetype, source,
1490                             sizeof (source),
1491                             cbp->cb_literal) != 0) {
1492                                 if (pl->pl_all)
1493                                         continue;
1494                                 if (!zfs_prop_valid_for_type(pl->pl_prop,
1495                                     ZFS_TYPE_DATASET, B_FALSE)) {
1496                                         (void) fprintf(stderr,
1497                                             gettext("No such property '%s'\n"),
1498                                             zfs_prop_to_name(pl->pl_prop));
1499                                         continue;
1500                                 }
1501                                 sourcetype = ZPROP_SRC_NONE;
1502                                 (void) strlcpy(buf, "-", sizeof (buf));
1503                         }
1504
1505                         if (received && (zfs_prop_get_recvd(zhp,
1506                             zfs_prop_to_name(pl->pl_prop), rbuf, sizeof (rbuf),
1507                             cbp->cb_literal) == 0))
1508                                 recvdval = rbuf;
1509
1510                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1511                             zfs_prop_to_name(pl->pl_prop),
1512                             buf, sourcetype, source, recvdval);
1513                 } else if (zfs_prop_userquota(pl->pl_user_prop)) {
1514                         sourcetype = ZPROP_SRC_LOCAL;
1515
1516                         if (zfs_prop_get_userquota(zhp, pl->pl_user_prop,
1517                             buf, sizeof (buf), cbp->cb_literal) != 0) {
1518                                 sourcetype = ZPROP_SRC_NONE;
1519                                 (void) strlcpy(buf, "-", sizeof (buf));
1520                         }
1521
1522                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1523                             pl->pl_user_prop, buf, sourcetype, source, NULL);
1524                 } else if (zfs_prop_written(pl->pl_user_prop)) {
1525                         sourcetype = ZPROP_SRC_LOCAL;
1526
1527                         if (zfs_prop_get_written(zhp, pl->pl_user_prop,
1528                             buf, sizeof (buf), cbp->cb_literal) != 0) {
1529                                 sourcetype = ZPROP_SRC_NONE;
1530                                 (void) strlcpy(buf, "-", sizeof (buf));
1531                         }
1532
1533                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1534                             pl->pl_user_prop, buf, sourcetype, source, NULL);
1535                 } else {
1536                         if (nvlist_lookup_nvlist(user_props,
1537                             pl->pl_user_prop, &propval) != 0) {
1538                                 if (pl->pl_all)
1539                                         continue;
1540                                 sourcetype = ZPROP_SRC_NONE;
1541                                 strval = "-";
1542                         } else {
1543                                 verify(nvlist_lookup_string(propval,
1544                                     ZPROP_VALUE, &strval) == 0);
1545                                 verify(nvlist_lookup_string(propval,
1546                                     ZPROP_SOURCE, &sourceval) == 0);
1547
1548                                 if (strcmp(sourceval,
1549                                     zfs_get_name(zhp)) == 0) {
1550                                         sourcetype = ZPROP_SRC_LOCAL;
1551                                 } else if (strcmp(sourceval,
1552                                     ZPROP_SOURCE_VAL_RECVD) == 0) {
1553                                         sourcetype = ZPROP_SRC_RECEIVED;
1554                                 } else {
1555                                         sourcetype = ZPROP_SRC_INHERITED;
1556                                         (void) strlcpy(source,
1557                                             sourceval, sizeof (source));
1558                                 }
1559                         }
1560
1561                         if (received && (zfs_prop_get_recvd(zhp,
1562                             pl->pl_user_prop, rbuf, sizeof (rbuf),
1563                             cbp->cb_literal) == 0))
1564                                 recvdval = rbuf;
1565
1566                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1567                             pl->pl_user_prop, strval, sourcetype,
1568                             source, recvdval);
1569                 }
1570         }
1571
1572         return (0);
1573 }
1574
1575 static int
1576 zfs_do_get(int argc, char **argv)
1577 {
1578         zprop_get_cbdata_t cb = { 0 };
1579         int i, c, flags = ZFS_ITER_ARGS_CAN_BE_PATHS;
1580         int types = ZFS_TYPE_DATASET;
1581         char *value, *fields;
1582         int ret = 0;
1583         int limit = 0;
1584         zprop_list_t fake_name = { 0 };
1585
1586         /*
1587          * Set up default columns and sources.
1588          */
1589         cb.cb_sources = ZPROP_SRC_ALL;
1590         cb.cb_columns[0] = GET_COL_NAME;
1591         cb.cb_columns[1] = GET_COL_PROPERTY;
1592         cb.cb_columns[2] = GET_COL_VALUE;
1593         cb.cb_columns[3] = GET_COL_SOURCE;
1594         cb.cb_type = ZFS_TYPE_DATASET;
1595
1596         /* check options */
1597         while ((c = getopt(argc, argv, ":d:o:s:rt:Hp")) != -1) {
1598                 switch (c) {
1599                 case 'p':
1600                         cb.cb_literal = B_TRUE;
1601                         break;
1602                 case 'd':
1603                         limit = parse_depth(optarg, &flags);
1604                         break;
1605                 case 'r':
1606                         flags |= ZFS_ITER_RECURSE;
1607                         break;
1608                 case 'H':
1609                         cb.cb_scripted = B_TRUE;
1610                         break;
1611                 case ':':
1612                         (void) fprintf(stderr, gettext("missing argument for "
1613                             "'%c' option\n"), optopt);
1614                         usage(B_FALSE);
1615                         break;
1616                 case 'o':
1617                         /*
1618                          * Process the set of columns to display.  We zero out
1619                          * the structure to give us a blank slate.
1620                          */
1621                         bzero(&cb.cb_columns, sizeof (cb.cb_columns));
1622                         i = 0;
1623                         while (*optarg != '\0') {
1624                                 static char *col_subopts[] =
1625                                     { "name", "property", "value", "received",
1626                                     "source", "all", NULL };
1627
1628                                 if (i == ZFS_GET_NCOLS) {
1629                                         (void) fprintf(stderr, gettext("too "
1630                                             "many fields given to -o "
1631                                             "option\n"));
1632                                         usage(B_FALSE);
1633                                 }
1634
1635                                 switch (getsubopt(&optarg, col_subopts,
1636                                     &value)) {
1637                                 case 0:
1638                                         cb.cb_columns[i++] = GET_COL_NAME;
1639                                         break;
1640                                 case 1:
1641                                         cb.cb_columns[i++] = GET_COL_PROPERTY;
1642                                         break;
1643                                 case 2:
1644                                         cb.cb_columns[i++] = GET_COL_VALUE;
1645                                         break;
1646                                 case 3:
1647                                         cb.cb_columns[i++] = GET_COL_RECVD;
1648                                         flags |= ZFS_ITER_RECVD_PROPS;
1649                                         break;
1650                                 case 4:
1651                                         cb.cb_columns[i++] = GET_COL_SOURCE;
1652                                         break;
1653                                 case 5:
1654                                         if (i > 0) {
1655                                                 (void) fprintf(stderr,
1656                                                     gettext("\"all\" conflicts "
1657                                                     "with specific fields "
1658                                                     "given to -o option\n"));
1659                                                 usage(B_FALSE);
1660                                         }
1661                                         cb.cb_columns[0] = GET_COL_NAME;
1662                                         cb.cb_columns[1] = GET_COL_PROPERTY;
1663                                         cb.cb_columns[2] = GET_COL_VALUE;
1664                                         cb.cb_columns[3] = GET_COL_RECVD;
1665                                         cb.cb_columns[4] = GET_COL_SOURCE;
1666                                         flags |= ZFS_ITER_RECVD_PROPS;
1667                                         i = ZFS_GET_NCOLS;
1668                                         break;
1669                                 default:
1670                                         (void) fprintf(stderr,
1671                                             gettext("invalid column name "
1672                                             "'%s'\n"), value);
1673                                         usage(B_FALSE);
1674                                 }
1675                         }
1676                         break;
1677
1678                 case 's':
1679                         cb.cb_sources = 0;
1680                         while (*optarg != '\0') {
1681                                 static char *source_subopts[] = {
1682                                         "local", "default", "inherited",
1683                                         "received", "temporary", "none",
1684                                         NULL };
1685
1686                                 switch (getsubopt(&optarg, source_subopts,
1687                                     &value)) {
1688                                 case 0:
1689                                         cb.cb_sources |= ZPROP_SRC_LOCAL;
1690                                         break;
1691                                 case 1:
1692                                         cb.cb_sources |= ZPROP_SRC_DEFAULT;
1693                                         break;
1694                                 case 2:
1695                                         cb.cb_sources |= ZPROP_SRC_INHERITED;
1696                                         break;
1697                                 case 3:
1698                                         cb.cb_sources |= ZPROP_SRC_RECEIVED;
1699                                         break;
1700                                 case 4:
1701                                         cb.cb_sources |= ZPROP_SRC_TEMPORARY;
1702                                         break;
1703                                 case 5:
1704                                         cb.cb_sources |= ZPROP_SRC_NONE;
1705                                         break;
1706                                 default:
1707                                         (void) fprintf(stderr,
1708                                             gettext("invalid source "
1709                                             "'%s'\n"), value);
1710                                         usage(B_FALSE);
1711                                 }
1712                         }
1713                         break;
1714
1715                 case 't':
1716                         types = 0;
1717                         flags &= ~ZFS_ITER_PROP_LISTSNAPS;
1718                         while (*optarg != '\0') {
1719                                 static char *type_subopts[] = { "filesystem",
1720                                     "volume", "snapshot", "bookmark",
1721                                     "all", NULL };
1722
1723                                 switch (getsubopt(&optarg, type_subopts,
1724                                     &value)) {
1725                                 case 0:
1726                                         types |= ZFS_TYPE_FILESYSTEM;
1727                                         break;
1728                                 case 1:
1729                                         types |= ZFS_TYPE_VOLUME;
1730                                         break;
1731                                 case 2:
1732                                         types |= ZFS_TYPE_SNAPSHOT;
1733                                         break;
1734                                 case 3:
1735                                         types |= ZFS_TYPE_BOOKMARK;
1736                                         break;
1737                                 case 4:
1738                                         types = ZFS_TYPE_DATASET |
1739                                             ZFS_TYPE_BOOKMARK;
1740                                         break;
1741
1742                                 default:
1743                                         (void) fprintf(stderr,
1744                                             gettext("invalid type '%s'\n"),
1745                                             value);
1746                                         usage(B_FALSE);
1747                                 }
1748                         }
1749                         break;
1750
1751                 case '?':
1752                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1753                             optopt);
1754                         usage(B_FALSE);
1755                 }
1756         }
1757
1758         argc -= optind;
1759         argv += optind;
1760
1761         if (argc < 1) {
1762                 (void) fprintf(stderr, gettext("missing property "
1763                     "argument\n"));
1764                 usage(B_FALSE);
1765         }
1766
1767         fields = argv[0];
1768
1769         if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
1770             != 0)
1771                 usage(B_FALSE);
1772
1773         argc--;
1774         argv++;
1775
1776         /*
1777          * As part of zfs_expand_proplist(), we keep track of the maximum column
1778          * width for each property.  For the 'NAME' (and 'SOURCE') columns, we
1779          * need to know the maximum name length.  However, the user likely did
1780          * not specify 'name' as one of the properties to fetch, so we need to
1781          * make sure we always include at least this property for
1782          * print_get_headers() to work properly.
1783          */
1784         if (cb.cb_proplist != NULL) {
1785                 fake_name.pl_prop = ZFS_PROP_NAME;
1786                 fake_name.pl_width = strlen(gettext("NAME"));
1787                 fake_name.pl_next = cb.cb_proplist;
1788                 cb.cb_proplist = &fake_name;
1789         }
1790
1791         cb.cb_first = B_TRUE;
1792
1793         /* run for each object */
1794         ret = zfs_for_each(argc, argv, flags, types, NULL,
1795             &cb.cb_proplist, limit, get_callback, &cb);
1796
1797         if (cb.cb_proplist == &fake_name)
1798                 zprop_free_list(fake_name.pl_next);
1799         else
1800                 zprop_free_list(cb.cb_proplist);
1801
1802         return (ret);
1803 }
1804
1805 /*
1806  * inherit [-rS] <property> <fs|vol> ...
1807  *
1808  *      -r      Recurse over all children
1809  *      -S      Revert to received value, if any
1810  *
1811  * For each dataset specified on the command line, inherit the given property
1812  * from its parent.  Inheriting a property at the pool level will cause it to
1813  * use the default value.  The '-r' flag will recurse over all children, and is
1814  * useful for setting a property on a hierarchy-wide basis, regardless of any
1815  * local modifications for each dataset.
1816  */
1817
1818 typedef struct inherit_cbdata {
1819         const char *cb_propname;
1820         boolean_t cb_received;
1821 } inherit_cbdata_t;
1822
1823 static int
1824 inherit_recurse_cb(zfs_handle_t *zhp, void *data)
1825 {
1826         inherit_cbdata_t *cb = data;
1827         zfs_prop_t prop = zfs_name_to_prop(cb->cb_propname);
1828
1829         /*
1830          * If we're doing it recursively, then ignore properties that
1831          * are not valid for this type of dataset.
1832          */
1833         if (prop != ZPROP_INVAL &&
1834             !zfs_prop_valid_for_type(prop, zfs_get_type(zhp), B_FALSE))
1835                 return (0);
1836
1837         return (zfs_prop_inherit(zhp, cb->cb_propname, cb->cb_received) != 0);
1838 }
1839
1840 static int
1841 inherit_cb(zfs_handle_t *zhp, void *data)
1842 {
1843         inherit_cbdata_t *cb = data;
1844
1845         return (zfs_prop_inherit(zhp, cb->cb_propname, cb->cb_received) != 0);
1846 }
1847
1848 static int
1849 zfs_do_inherit(int argc, char **argv)
1850 {
1851         int c;
1852         zfs_prop_t prop;
1853         inherit_cbdata_t cb = { 0 };
1854         char *propname;
1855         int ret = 0;
1856         int flags = 0;
1857         boolean_t received = B_FALSE;
1858
1859         /* check options */
1860         while ((c = getopt(argc, argv, "rS")) != -1) {
1861                 switch (c) {
1862                 case 'r':
1863                         flags |= ZFS_ITER_RECURSE;
1864                         break;
1865                 case 'S':
1866                         received = B_TRUE;
1867                         break;
1868                 case '?':
1869                 default:
1870                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1871                             optopt);
1872                         usage(B_FALSE);
1873                 }
1874         }
1875
1876         argc -= optind;
1877         argv += optind;
1878
1879         /* check number of arguments */
1880         if (argc < 1) {
1881                 (void) fprintf(stderr, gettext("missing property argument\n"));
1882                 usage(B_FALSE);
1883         }
1884         if (argc < 2) {
1885                 (void) fprintf(stderr, gettext("missing dataset argument\n"));
1886                 usage(B_FALSE);
1887         }
1888
1889         propname = argv[0];
1890         argc--;
1891         argv++;
1892
1893         if ((prop = zfs_name_to_prop(propname)) != ZPROP_INVAL) {
1894                 if (zfs_prop_readonly(prop)) {
1895                         (void) fprintf(stderr, gettext(
1896                             "%s property is read-only\n"),
1897                             propname);
1898                         return (1);
1899                 }
1900                 if (!zfs_prop_inheritable(prop) && !received) {
1901                         (void) fprintf(stderr, gettext("'%s' property cannot "
1902                             "be inherited\n"), propname);
1903                         if (prop == ZFS_PROP_QUOTA ||
1904                             prop == ZFS_PROP_RESERVATION ||
1905                             prop == ZFS_PROP_REFQUOTA ||
1906                             prop == ZFS_PROP_REFRESERVATION) {
1907                                 (void) fprintf(stderr, gettext("use 'zfs set "
1908                                     "%s=none' to clear\n"), propname);
1909                                 (void) fprintf(stderr, gettext("use 'zfs "
1910                                     "inherit -S %s' to revert to received "
1911                                     "value\n"), propname);
1912                         }
1913                         return (1);
1914                 }
1915                 if (received && (prop == ZFS_PROP_VOLSIZE ||
1916                     prop == ZFS_PROP_VERSION)) {
1917                         (void) fprintf(stderr, gettext("'%s' property cannot "
1918                             "be reverted to a received value\n"), propname);
1919                         return (1);
1920                 }
1921         } else if (!zfs_prop_user(propname)) {
1922                 (void) fprintf(stderr, gettext("invalid property '%s'\n"),
1923                     propname);
1924                 usage(B_FALSE);
1925         }
1926
1927         cb.cb_propname = propname;
1928         cb.cb_received = received;
1929
1930         if (flags & ZFS_ITER_RECURSE) {
1931                 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
1932                     NULL, NULL, 0, inherit_recurse_cb, &cb);
1933         } else {
1934                 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
1935                     NULL, NULL, 0, inherit_cb, &cb);
1936         }
1937
1938         return (ret);
1939 }
1940
1941 typedef struct upgrade_cbdata {
1942         uint64_t cb_numupgraded;
1943         uint64_t cb_numsamegraded;
1944         uint64_t cb_numfailed;
1945         uint64_t cb_version;
1946         boolean_t cb_newer;
1947         boolean_t cb_foundone;
1948         char cb_lastfs[ZFS_MAXNAMELEN];
1949 } upgrade_cbdata_t;
1950
1951 static int
1952 same_pool(zfs_handle_t *zhp, const char *name)
1953 {
1954         int len1 = strcspn(name, "/@");
1955         const char *zhname = zfs_get_name(zhp);
1956         int len2 = strcspn(zhname, "/@");
1957
1958         if (len1 != len2)
1959                 return (B_FALSE);
1960         return (strncmp(name, zhname, len1) == 0);
1961 }
1962
1963 static int
1964 upgrade_list_callback(zfs_handle_t *zhp, void *data)
1965 {
1966         upgrade_cbdata_t *cb = data;
1967         int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
1968
1969         /* list if it's old/new */
1970         if ((!cb->cb_newer && version < ZPL_VERSION) ||
1971             (cb->cb_newer && version > ZPL_VERSION)) {
1972                 char *str;
1973                 if (cb->cb_newer) {
1974                         str = gettext("The following filesystems are "
1975                             "formatted using a newer software version and\n"
1976                             "cannot be accessed on the current system.\n\n");
1977                 } else {
1978                         str = gettext("The following filesystems are "
1979                             "out of date, and can be upgraded.  After being\n"
1980                             "upgraded, these filesystems (and any 'zfs send' "
1981                             "streams generated from\n"
1982                             "subsequent snapshots) will no longer be "
1983                             "accessible by older software versions.\n\n");
1984                 }
1985
1986                 if (!cb->cb_foundone) {
1987                         (void) puts(str);
1988                         (void) printf(gettext("VER  FILESYSTEM\n"));
1989                         (void) printf(gettext("---  ------------\n"));
1990                         cb->cb_foundone = B_TRUE;
1991                 }
1992
1993                 (void) printf("%2u   %s\n", version, zfs_get_name(zhp));
1994         }
1995
1996         return (0);
1997 }
1998
1999 static int
2000 upgrade_set_callback(zfs_handle_t *zhp, void *data)
2001 {
2002         upgrade_cbdata_t *cb = data;
2003         int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
2004         int needed_spa_version;
2005         int spa_version;
2006
2007         if (zfs_spa_version(zhp, &spa_version) < 0)
2008                 return (-1);
2009
2010         needed_spa_version = zfs_spa_version_map(cb->cb_version);
2011
2012         if (needed_spa_version < 0)
2013                 return (-1);
2014
2015         if (spa_version < needed_spa_version) {
2016                 /* can't upgrade */
2017                 (void) printf(gettext("%s: can not be "
2018                     "upgraded; the pool version needs to first "
2019                     "be upgraded\nto version %d\n\n"),
2020                     zfs_get_name(zhp), needed_spa_version);
2021                 cb->cb_numfailed++;
2022                 return (0);
2023         }
2024
2025         /* upgrade */
2026         if (version < cb->cb_version) {
2027                 char verstr[16];
2028                 (void) snprintf(verstr, sizeof (verstr),
2029                     "%llu", (u_longlong_t)cb->cb_version);
2030                 if (cb->cb_lastfs[0] && !same_pool(zhp, cb->cb_lastfs)) {
2031                         /*
2032                          * If they did "zfs upgrade -a", then we could
2033                          * be doing ioctls to different pools.  We need
2034                          * to log this history once to each pool, and bypass
2035                          * the normal history logging that happens in main().
2036                          */
2037                         (void) zpool_log_history(g_zfs, history_str);
2038                         log_history = B_FALSE;
2039                 }
2040                 if (zfs_prop_set(zhp, "version", verstr) == 0)
2041                         cb->cb_numupgraded++;
2042                 else
2043                         cb->cb_numfailed++;
2044                 (void) strcpy(cb->cb_lastfs, zfs_get_name(zhp));
2045         } else if (version > cb->cb_version) {
2046                 /* can't downgrade */
2047                 (void) printf(gettext("%s: can not be downgraded; "
2048                     "it is already at version %u\n"),
2049                     zfs_get_name(zhp), version);
2050                 cb->cb_numfailed++;
2051         } else {
2052                 cb->cb_numsamegraded++;
2053         }
2054         return (0);
2055 }
2056
2057 /*
2058  * zfs upgrade
2059  * zfs upgrade -v
2060  * zfs upgrade [-r] [-V <version>] <-a | filesystem>
2061  */
2062 static int
2063 zfs_do_upgrade(int argc, char **argv)
2064 {
2065         boolean_t all = B_FALSE;
2066         boolean_t showversions = B_FALSE;
2067         int ret = 0;
2068         upgrade_cbdata_t cb = { 0 };
2069         signed char c;
2070         int flags = ZFS_ITER_ARGS_CAN_BE_PATHS;
2071
2072         /* check options */
2073         while ((c = getopt(argc, argv, "rvV:a")) != -1) {
2074                 switch (c) {
2075                 case 'r':
2076                         flags |= ZFS_ITER_RECURSE;
2077                         break;
2078                 case 'v':
2079                         showversions = B_TRUE;
2080                         break;
2081                 case 'V':
2082                         if (zfs_prop_string_to_index(ZFS_PROP_VERSION,
2083                             optarg, &cb.cb_version) != 0) {
2084                                 (void) fprintf(stderr,
2085                                     gettext("invalid version %s\n"), optarg);
2086                                 usage(B_FALSE);
2087                         }
2088                         break;
2089                 case 'a':
2090                         all = B_TRUE;
2091                         break;
2092                 case '?':
2093                 default:
2094                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2095                             optopt);
2096                         usage(B_FALSE);
2097                 }
2098         }
2099
2100         argc -= optind;
2101         argv += optind;
2102
2103         if ((!all && !argc) && ((flags & ZFS_ITER_RECURSE) | cb.cb_version))
2104                 usage(B_FALSE);
2105         if (showversions && (flags & ZFS_ITER_RECURSE || all ||
2106             cb.cb_version || argc))
2107                 usage(B_FALSE);
2108         if ((all || argc) && (showversions))
2109                 usage(B_FALSE);
2110         if (all && argc)
2111                 usage(B_FALSE);
2112
2113         if (showversions) {
2114                 /* Show info on available versions. */
2115                 (void) printf(gettext("The following filesystem versions are "
2116                     "supported:\n\n"));
2117                 (void) printf(gettext("VER  DESCRIPTION\n"));
2118                 (void) printf("---  -----------------------------------------"
2119                     "---------------\n");
2120                 (void) printf(gettext(" 1   Initial ZFS filesystem version\n"));
2121                 (void) printf(gettext(" 2   Enhanced directory entries\n"));
2122                 (void) printf(gettext(" 3   Case insensitive and filesystem "
2123                     "user identifier (FUID)\n"));
2124                 (void) printf(gettext(" 4   userquota, groupquota "
2125                     "properties\n"));
2126                 (void) printf(gettext(" 5   System attributes\n"));
2127                 (void) printf(gettext("\nFor more information on a particular "
2128                     "version, including supported releases,\n"));
2129                 (void) printf("see the ZFS Administration Guide.\n\n");
2130                 ret = 0;
2131         } else if (argc || all) {
2132                 /* Upgrade filesystems */
2133                 if (cb.cb_version == 0)
2134                         cb.cb_version = ZPL_VERSION;
2135                 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_FILESYSTEM,
2136                     NULL, NULL, 0, upgrade_set_callback, &cb);
2137                 (void) printf(gettext("%llu filesystems upgraded\n"),
2138                     (u_longlong_t)cb.cb_numupgraded);
2139                 if (cb.cb_numsamegraded) {
2140                         (void) printf(gettext("%llu filesystems already at "
2141                             "this version\n"),
2142                             (u_longlong_t)cb.cb_numsamegraded);
2143                 }
2144                 if (cb.cb_numfailed != 0)
2145                         ret = 1;
2146         } else {
2147                 /* List old-version filesytems */
2148                 boolean_t found;
2149                 (void) printf(gettext("This system is currently running "
2150                     "ZFS filesystem version %llu.\n\n"), ZPL_VERSION);
2151
2152                 flags |= ZFS_ITER_RECURSE;
2153                 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
2154                     NULL, NULL, 0, upgrade_list_callback, &cb);
2155
2156                 found = cb.cb_foundone;
2157                 cb.cb_foundone = B_FALSE;
2158                 cb.cb_newer = B_TRUE;
2159
2160                 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
2161                     NULL, NULL, 0, upgrade_list_callback, &cb);
2162
2163                 if (!cb.cb_foundone && !found) {
2164                         (void) printf(gettext("All filesystems are "
2165                             "formatted with the current version.\n"));
2166                 }
2167         }
2168
2169         return (ret);
2170 }
2171
2172 /*
2173  * zfs userspace [-Hinp] [-o field[,...]] [-s field [-s field]...]
2174  *               [-S field [-S field]...] [-t type[,...]] filesystem | snapshot
2175  * zfs groupspace [-Hinp] [-o field[,...]] [-s field [-s field]...]
2176  *                [-S field [-S field]...] [-t type[,...]] filesystem | snapshot
2177  *
2178  *      -H      Scripted mode; elide headers and separate columns by tabs.
2179  *      -i      Translate SID to POSIX ID.
2180  *      -n      Print numeric ID instead of user/group name.
2181  *      -o      Control which fields to display.
2182  *      -p      Use exact (parsable) numeric output.
2183  *      -s      Specify sort columns, descending order.
2184  *      -S      Specify sort columns, ascending order.
2185  *      -t      Control which object types to display.
2186  *
2187  *      Displays space consumed by, and quotas on, each user in the specified
2188  *      filesystem or snapshot.
2189  */
2190
2191 /* us_field_types, us_field_hdr and us_field_names should be kept in sync */
2192 enum us_field_types {
2193         USFIELD_TYPE,
2194         USFIELD_NAME,
2195         USFIELD_USED,
2196         USFIELD_QUOTA
2197 };
2198 static char *us_field_hdr[] = { "TYPE", "NAME", "USED", "QUOTA" };
2199 static char *us_field_names[] = { "type", "name", "used", "quota" };
2200 #define USFIELD_LAST    (sizeof (us_field_names) / sizeof (char *))
2201
2202 #define USTYPE_PSX_GRP  (1 << 0)
2203 #define USTYPE_PSX_USR  (1 << 1)
2204 #define USTYPE_SMB_GRP  (1 << 2)
2205 #define USTYPE_SMB_USR  (1 << 3)
2206 #define USTYPE_ALL      \
2207         (USTYPE_PSX_GRP | USTYPE_PSX_USR | USTYPE_SMB_GRP | USTYPE_SMB_USR)
2208
2209 static int us_type_bits[] = {
2210         USTYPE_PSX_GRP,
2211         USTYPE_PSX_USR,
2212         USTYPE_SMB_GRP,
2213         USTYPE_SMB_USR,
2214         USTYPE_ALL
2215 };
2216 static char *us_type_names[] = { "posixgroup", "posixuser", "smbgroup",
2217         "smbuser", "all" };
2218
2219 typedef struct us_node {
2220         nvlist_t        *usn_nvl;
2221         uu_avl_node_t   usn_avlnode;
2222         uu_list_node_t  usn_listnode;
2223 } us_node_t;
2224
2225 typedef struct us_cbdata {
2226         nvlist_t        **cb_nvlp;
2227         uu_avl_pool_t   *cb_avl_pool;
2228         uu_avl_t        *cb_avl;
2229         boolean_t       cb_numname;
2230         boolean_t       cb_nicenum;
2231         boolean_t       cb_sid2posix;
2232         zfs_userquota_prop_t cb_prop;
2233         zfs_sort_column_t *cb_sortcol;
2234         size_t          cb_width[USFIELD_LAST];
2235 } us_cbdata_t;
2236
2237 static boolean_t us_populated = B_FALSE;
2238
2239 typedef struct {
2240         zfs_sort_column_t *si_sortcol;
2241         boolean_t       si_numname;
2242 } us_sort_info_t;
2243
2244 static int
2245 us_field_index(char *field)
2246 {
2247         int i;
2248
2249         for (i = 0; i < USFIELD_LAST; i++) {
2250                 if (strcmp(field, us_field_names[i]) == 0)
2251                         return (i);
2252         }
2253
2254         return (-1);
2255 }
2256
2257 static int
2258 us_compare(const void *larg, const void *rarg, void *unused)
2259 {
2260         const us_node_t *l = larg;
2261         const us_node_t *r = rarg;
2262         us_sort_info_t *si = (us_sort_info_t *)unused;
2263         zfs_sort_column_t *sortcol = si->si_sortcol;
2264         boolean_t numname = si->si_numname;
2265         nvlist_t *lnvl = l->usn_nvl;
2266         nvlist_t *rnvl = r->usn_nvl;
2267         int rc = 0;
2268         boolean_t lvb, rvb;
2269
2270         for (; sortcol != NULL; sortcol = sortcol->sc_next) {
2271                 char *lvstr = "";
2272                 char *rvstr = "";
2273                 uint32_t lv32 = 0;
2274                 uint32_t rv32 = 0;
2275                 uint64_t lv64 = 0;
2276                 uint64_t rv64 = 0;
2277                 zfs_prop_t prop = sortcol->sc_prop;
2278                 const char *propname = NULL;
2279                 boolean_t reverse = sortcol->sc_reverse;
2280
2281                 switch (prop) {
2282                 case ZFS_PROP_TYPE:
2283                         propname = "type";
2284                         (void) nvlist_lookup_uint32(lnvl, propname, &lv32);
2285                         (void) nvlist_lookup_uint32(rnvl, propname, &rv32);
2286                         if (rv32 != lv32)
2287                                 rc = (rv32 < lv32) ? 1 : -1;
2288                         break;
2289                 case ZFS_PROP_NAME:
2290                         propname = "name";
2291                         if (numname) {
2292                                 (void) nvlist_lookup_uint64(lnvl, propname,
2293                                     &lv64);
2294                                 (void) nvlist_lookup_uint64(rnvl, propname,
2295                                     &rv64);
2296                                 if (rv64 != lv64)
2297                                         rc = (rv64 < lv64) ? 1 : -1;
2298                         } else {
2299                                 (void) nvlist_lookup_string(lnvl, propname,
2300                                     &lvstr);
2301                                 (void) nvlist_lookup_string(rnvl, propname,
2302                                     &rvstr);
2303                                 rc = strcmp(lvstr, rvstr);
2304                         }
2305                         break;
2306                 case ZFS_PROP_USED:
2307                 case ZFS_PROP_QUOTA:
2308                         if (!us_populated)
2309                                 break;
2310                         if (prop == ZFS_PROP_USED)
2311                                 propname = "used";
2312                         else
2313                                 propname = "quota";
2314                         (void) nvlist_lookup_uint64(lnvl, propname, &lv64);
2315                         (void) nvlist_lookup_uint64(rnvl, propname, &rv64);
2316                         if (rv64 != lv64)
2317                                 rc = (rv64 < lv64) ? 1 : -1;
2318                         break;
2319                 default:
2320                         break;
2321                 }
2322
2323                 if (rc != 0) {
2324                         if (rc < 0)
2325                                 return (reverse ? 1 : -1);
2326                         else
2327                                 return (reverse ? -1 : 1);
2328                 }
2329         }
2330
2331         /*
2332          * If entries still seem to be the same, check if they are of the same
2333          * type (smbentity is added only if we are doing SID to POSIX ID
2334          * translation where we can have duplicate type/name combinations).
2335          */
2336         if (nvlist_lookup_boolean_value(lnvl, "smbentity", &lvb) == 0 &&
2337             nvlist_lookup_boolean_value(rnvl, "smbentity", &rvb) == 0 &&
2338             lvb != rvb)
2339                 return (lvb < rvb ? -1 : 1);
2340
2341         return (0);
2342 }
2343
2344 static inline const char *
2345 us_type2str(unsigned field_type)
2346 {
2347         switch (field_type) {
2348         case USTYPE_PSX_USR:
2349                 return ("POSIX User");
2350         case USTYPE_PSX_GRP:
2351                 return ("POSIX Group");
2352         case USTYPE_SMB_USR:
2353                 return ("SMB User");
2354         case USTYPE_SMB_GRP:
2355                 return ("SMB Group");
2356         default:
2357                 return ("Undefined");
2358         }
2359 }
2360
2361 static int
2362 userspace_cb(void *arg, const char *domain, uid_t rid, uint64_t space)
2363 {
2364         us_cbdata_t *cb = (us_cbdata_t *)arg;
2365         zfs_userquota_prop_t prop = cb->cb_prop;
2366         char *name = NULL;
2367         char *propname;
2368         char sizebuf[32];
2369         us_node_t *node;
2370         uu_avl_pool_t *avl_pool = cb->cb_avl_pool;
2371         uu_avl_t *avl = cb->cb_avl;
2372         uu_avl_index_t idx;
2373         nvlist_t *props;
2374         us_node_t *n;
2375         zfs_sort_column_t *sortcol = cb->cb_sortcol;
2376         unsigned type = 0;
2377         const char *typestr;
2378         size_t namelen;
2379         size_t typelen;
2380         size_t sizelen;
2381         int typeidx, nameidx, sizeidx;
2382         us_sort_info_t sortinfo = { sortcol, cb->cb_numname };
2383         boolean_t smbentity = B_FALSE;
2384
2385         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
2386                 nomem();
2387         node = safe_malloc(sizeof (us_node_t));
2388         uu_avl_node_init(node, &node->usn_avlnode, avl_pool);
2389         node->usn_nvl = props;
2390
2391         if (domain != NULL && domain[0] != '\0') {
2392 #ifdef HAVE_IDMAP
2393                 /* SMB */
2394                 char sid[ZFS_MAXNAMELEN + 32];
2395                 uid_t id;
2396                 uint64_t classes;
2397                 int err;
2398                 directory_error_t e;
2399
2400                 smbentity = B_TRUE;
2401
2402                 (void) snprintf(sid, sizeof (sid), "%s-%u", domain, rid);
2403
2404                 if (prop == ZFS_PROP_GROUPUSED || prop == ZFS_PROP_GROUPQUOTA) {
2405                         type = USTYPE_SMB_GRP;
2406                         err = sid_to_id(sid, B_FALSE, &id);
2407                 } else {
2408                         type = USTYPE_SMB_USR;
2409                         err = sid_to_id(sid, B_TRUE, &id);
2410                 }
2411
2412                 if (err == 0) {
2413                         rid = id;
2414                         if (!cb->cb_sid2posix) {
2415                                 e = directory_name_from_sid(NULL, sid, &name,
2416                                     &classes);
2417                                 if (e != NULL)
2418                                         directory_error_free(e);
2419                                 if (name == NULL)
2420                                         name = sid;
2421                         }
2422                 }
2423 #else
2424                 nvlist_free(props);
2425                 free(node);
2426
2427                 return (-1);
2428 #endif /* HAVE_IDMAP */
2429         }
2430
2431         if (cb->cb_sid2posix || domain == NULL || domain[0] == '\0') {
2432                 /* POSIX or -i */
2433                 if (prop == ZFS_PROP_GROUPUSED || prop == ZFS_PROP_GROUPQUOTA) {
2434                         type = USTYPE_PSX_GRP;
2435                         if (!cb->cb_numname) {
2436                                 struct group *g;
2437
2438                                 if ((g = getgrgid(rid)) != NULL)
2439                                         name = g->gr_name;
2440                         }
2441                 } else {
2442                         type = USTYPE_PSX_USR;
2443                         if (!cb->cb_numname) {
2444                                 struct passwd *p;
2445
2446                                 if ((p = getpwuid(rid)) != NULL)
2447                                         name = p->pw_name;
2448                         }
2449                 }
2450         }
2451
2452         /*
2453          * Make sure that the type/name combination is unique when doing
2454          * SID to POSIX ID translation (hence changing the type from SMB to
2455          * POSIX).
2456          */
2457         if (cb->cb_sid2posix &&
2458             nvlist_add_boolean_value(props, "smbentity", smbentity) != 0)
2459                 nomem();
2460
2461         /* Calculate/update width of TYPE field */
2462         typestr = us_type2str(type);
2463         typelen = strlen(gettext(typestr));
2464         typeidx = us_field_index("type");
2465         if (typelen > cb->cb_width[typeidx])
2466                 cb->cb_width[typeidx] = typelen;
2467         if (nvlist_add_uint32(props, "type", type) != 0)
2468                 nomem();
2469
2470         /* Calculate/update width of NAME field */
2471         if ((cb->cb_numname && cb->cb_sid2posix) || name == NULL) {
2472                 if (nvlist_add_uint64(props, "name", rid) != 0)
2473                         nomem();
2474                 namelen = snprintf(NULL, 0, "%u", rid);
2475         } else {
2476                 if (nvlist_add_string(props, "name", name) != 0)
2477                         nomem();
2478                 namelen = strlen(name);
2479         }
2480         nameidx = us_field_index("name");
2481         if (namelen > cb->cb_width[nameidx])
2482                 cb->cb_width[nameidx] = namelen;
2483
2484         /*
2485          * Check if this type/name combination is in the list and update it;
2486          * otherwise add new node to the list.
2487          */
2488         if ((n = uu_avl_find(avl, node, &sortinfo, &idx)) == NULL) {
2489                 uu_avl_insert(avl, node, idx);
2490         } else {
2491                 nvlist_free(props);
2492                 free(node);
2493                 node = n;
2494                 props = node->usn_nvl;
2495         }
2496
2497         /* Calculate/update width of USED/QUOTA fields */
2498         if (cb->cb_nicenum)
2499                 zfs_nicenum(space, sizebuf, sizeof (sizebuf));
2500         else
2501                 (void) snprintf(sizebuf, sizeof (sizebuf), "%llu",
2502                     (u_longlong_t)space);
2503         sizelen = strlen(sizebuf);
2504         if (prop == ZFS_PROP_USERUSED || prop == ZFS_PROP_GROUPUSED) {
2505                 propname = "used";
2506                 if (!nvlist_exists(props, "quota"))
2507                         (void) nvlist_add_uint64(props, "quota", 0);
2508         } else {
2509                 propname = "quota";
2510                 if (!nvlist_exists(props, "used"))
2511                         (void) nvlist_add_uint64(props, "used", 0);
2512         }
2513         sizeidx = us_field_index(propname);
2514         if (sizelen > cb->cb_width[sizeidx])
2515                 cb->cb_width[sizeidx] = sizelen;
2516
2517         if (nvlist_add_uint64(props, propname, space) != 0)
2518                 nomem();
2519
2520         return (0);
2521 }
2522
2523 static void
2524 print_us_node(boolean_t scripted, boolean_t parsable, int *fields, int types,
2525     size_t *width, us_node_t *node)
2526 {
2527         nvlist_t *nvl = node->usn_nvl;
2528         char valstr[ZFS_MAXNAMELEN];
2529         boolean_t first = B_TRUE;
2530         int cfield = 0;
2531         int field;
2532         uint32_t ustype;
2533
2534         /* Check type */
2535         (void) nvlist_lookup_uint32(nvl, "type", &ustype);
2536         if (!(ustype & types))
2537                 return;
2538
2539         while ((field = fields[cfield]) != USFIELD_LAST) {
2540                 nvpair_t *nvp = NULL;
2541                 data_type_t type;
2542                 uint32_t val32;
2543                 uint64_t val64;
2544                 char *strval = NULL;
2545
2546                 while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
2547                         if (strcmp(nvpair_name(nvp),
2548                             us_field_names[field]) == 0)
2549                                 break;
2550                 }
2551
2552                 type = nvpair_type(nvp);
2553                 switch (type) {
2554                 case DATA_TYPE_UINT32:
2555                         (void) nvpair_value_uint32(nvp, &val32);
2556                         break;
2557                 case DATA_TYPE_UINT64:
2558                         (void) nvpair_value_uint64(nvp, &val64);
2559                         break;
2560                 case DATA_TYPE_STRING:
2561                         (void) nvpair_value_string(nvp, &strval);
2562                         break;
2563                 default:
2564                         (void) fprintf(stderr, "invalid data type\n");
2565                 }
2566
2567                 switch (field) {
2568                 case USFIELD_TYPE:
2569                         strval = (char *)us_type2str(val32);
2570                         break;
2571                 case USFIELD_NAME:
2572                         if (type == DATA_TYPE_UINT64) {
2573                                 (void) sprintf(valstr, "%llu",
2574                                     (u_longlong_t) val64);
2575                                 strval = valstr;
2576                         }
2577                         break;
2578                 case USFIELD_USED:
2579                 case USFIELD_QUOTA:
2580                         if (type == DATA_TYPE_UINT64) {
2581                                 if (parsable) {
2582                                         (void) sprintf(valstr, "%llu",
2583                                             (u_longlong_t) val64);
2584                                 } else {
2585                                         zfs_nicenum(val64, valstr,
2586                                             sizeof (valstr));
2587                                 }
2588                                 if (field == USFIELD_QUOTA &&
2589                                     strcmp(valstr, "0") == 0)
2590                                         strval = "none";
2591                                 else
2592                                         strval = valstr;
2593                         }
2594                         break;
2595                 }
2596
2597                 if (!first) {
2598                         if (scripted)
2599                                 (void) printf("\t");
2600                         else
2601                                 (void) printf("  ");
2602                 }
2603                 if (scripted)
2604                         (void) printf("%s", strval);
2605                 else if (field == USFIELD_TYPE || field == USFIELD_NAME)
2606                         (void) printf("%-*s", (int) width[field], strval);
2607                 else
2608                         (void) printf("%*s", (int) width[field], strval);
2609
2610                 first = B_FALSE;
2611                 cfield++;
2612         }
2613
2614         (void) printf("\n");
2615 }
2616
2617 static void
2618 print_us(boolean_t scripted, boolean_t parsable, int *fields, int types,
2619     size_t *width, boolean_t rmnode, uu_avl_t *avl)
2620 {
2621         us_node_t *node;
2622         const char *col;
2623         int cfield = 0;
2624         int field;
2625
2626         if (!scripted) {
2627                 boolean_t first = B_TRUE;
2628
2629                 while ((field = fields[cfield]) != USFIELD_LAST) {
2630                         col = gettext(us_field_hdr[field]);
2631                         if (field == USFIELD_TYPE || field == USFIELD_NAME) {
2632                                 (void) printf(first ? "%-*s" : "  %-*s",
2633                                     (int) width[field], col);
2634                         } else {
2635                                 (void) printf(first ? "%*s" : "  %*s",
2636                                     (int) width[field], col);
2637                         }
2638                         first = B_FALSE;
2639                         cfield++;
2640                 }
2641                 (void) printf("\n");
2642         }
2643
2644         for (node = uu_avl_first(avl); node; node = uu_avl_next(avl, node)) {
2645                 print_us_node(scripted, parsable, fields, types, width, node);
2646                 if (rmnode)
2647                         nvlist_free(node->usn_nvl);
2648         }
2649 }
2650
2651 static int
2652 zfs_do_userspace(int argc, char **argv)
2653 {
2654         zfs_handle_t *zhp;
2655         zfs_userquota_prop_t p;
2656         uu_avl_pool_t *avl_pool;
2657         uu_avl_t *avl_tree;
2658         uu_avl_walk_t *walk;
2659         char *delim;
2660         char deffields[] = "type,name,used,quota";
2661         char *ofield = NULL;
2662         char *tfield = NULL;
2663         int cfield = 0;
2664         int fields[256];
2665         int i;
2666         boolean_t scripted = B_FALSE;
2667         boolean_t prtnum = B_FALSE;
2668         boolean_t parsable = B_FALSE;
2669         boolean_t sid2posix = B_FALSE;
2670         int ret = 0;
2671         int c;
2672         zfs_sort_column_t *sortcol = NULL;
2673         int types = USTYPE_PSX_USR | USTYPE_SMB_USR;
2674         us_cbdata_t cb;
2675         us_node_t *node;
2676         us_node_t *rmnode;
2677         uu_list_pool_t *listpool;
2678         uu_list_t *list;
2679         uu_avl_index_t idx = 0;
2680         uu_list_index_t idx2 = 0;
2681
2682         if (argc < 2)
2683                 usage(B_FALSE);
2684
2685         if (strcmp(argv[0], "groupspace") == 0)
2686                 /* Toggle default group types */
2687                 types = USTYPE_PSX_GRP | USTYPE_SMB_GRP;
2688
2689         while ((c = getopt(argc, argv, "nHpo:s:S:t:i")) != -1) {
2690                 switch (c) {
2691                 case 'n':
2692                         prtnum = B_TRUE;
2693                         break;
2694                 case 'H':
2695                         scripted = B_TRUE;
2696                         break;
2697                 case 'p':
2698                         parsable = B_TRUE;
2699                         break;
2700                 case 'o':
2701                         ofield = optarg;
2702                         break;
2703                 case 's':
2704                 case 'S':
2705                         if (zfs_add_sort_column(&sortcol, optarg,
2706                             c == 's' ? B_FALSE : B_TRUE) != 0) {
2707                                 (void) fprintf(stderr,
2708                                     gettext("invalid field '%s'\n"), optarg);
2709                                 usage(B_FALSE);
2710                         }
2711                         break;
2712                 case 't':
2713                         tfield = optarg;
2714                         break;
2715                 case 'i':
2716                         sid2posix = B_TRUE;
2717                         break;
2718                 case ':':
2719                         (void) fprintf(stderr, gettext("missing argument for "
2720                             "'%c' option\n"), optopt);
2721                         usage(B_FALSE);
2722                         break;
2723                 case '?':
2724                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2725                             optopt);
2726                         usage(B_FALSE);
2727                 }
2728         }
2729
2730         argc -= optind;
2731         argv += optind;
2732
2733         if (argc < 1) {
2734                 (void) fprintf(stderr, gettext("missing dataset name\n"));
2735                 usage(B_FALSE);
2736         }
2737         if (argc > 1) {
2738                 (void) fprintf(stderr, gettext("too many arguments\n"));
2739                 usage(B_FALSE);
2740         }
2741
2742         /* Use default output fields if not specified using -o */
2743         if (ofield == NULL)
2744                 ofield = deffields;
2745         do {
2746                 if ((delim = strchr(ofield, ',')) != NULL)
2747                         *delim = '\0';
2748                 if ((fields[cfield++] = us_field_index(ofield)) == -1) {
2749                         (void) fprintf(stderr, gettext("invalid type '%s' "
2750                             "for -o option\n"), ofield);
2751                         return (-1);
2752                 }
2753                 if (delim != NULL)
2754                         ofield = delim + 1;
2755         } while (delim != NULL);
2756         fields[cfield] = USFIELD_LAST;
2757
2758         /* Override output types (-t option) */
2759         if (tfield != NULL) {
2760                 types = 0;
2761
2762                 do {
2763                         boolean_t found = B_FALSE;
2764
2765                         if ((delim = strchr(tfield, ',')) != NULL)
2766                                 *delim = '\0';
2767                         for (i = 0; i < sizeof (us_type_bits) / sizeof (int);
2768                             i++) {
2769                                 if (strcmp(tfield, us_type_names[i]) == 0) {
2770                                         found = B_TRUE;
2771                                         types |= us_type_bits[i];
2772                                         break;
2773                                 }
2774                         }
2775                         if (!found) {
2776                                 (void) fprintf(stderr, gettext("invalid type "
2777                                     "'%s' for -t option\n"), tfield);
2778                                 return (-1);
2779                         }
2780                         if (delim != NULL)
2781                                 tfield = delim + 1;
2782                 } while (delim != NULL);
2783         }
2784
2785         if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL)
2786                 return (1);
2787
2788         if ((avl_pool = uu_avl_pool_create("us_avl_pool", sizeof (us_node_t),
2789             offsetof(us_node_t, usn_avlnode), us_compare, UU_DEFAULT)) == NULL)
2790                 nomem();
2791         if ((avl_tree = uu_avl_create(avl_pool, NULL, UU_DEFAULT)) == NULL)
2792                 nomem();
2793
2794         /* Always add default sorting columns */
2795         (void) zfs_add_sort_column(&sortcol, "type", B_FALSE);
2796         (void) zfs_add_sort_column(&sortcol, "name", B_FALSE);
2797
2798         cb.cb_sortcol = sortcol;
2799         cb.cb_numname = prtnum;
2800         cb.cb_nicenum = !parsable;
2801         cb.cb_avl_pool = avl_pool;
2802         cb.cb_avl = avl_tree;
2803         cb.cb_sid2posix = sid2posix;
2804
2805         for (i = 0; i < USFIELD_LAST; i++)
2806                 cb.cb_width[i] = strlen(gettext(us_field_hdr[i]));
2807
2808         for (p = 0; p < ZFS_NUM_USERQUOTA_PROPS; p++) {
2809                 if (((p == ZFS_PROP_USERUSED || p == ZFS_PROP_USERQUOTA) &&
2810                     !(types & (USTYPE_PSX_USR | USTYPE_SMB_USR))) ||
2811                     ((p == ZFS_PROP_GROUPUSED || p == ZFS_PROP_GROUPQUOTA) &&
2812                     !(types & (USTYPE_PSX_GRP | USTYPE_SMB_GRP))))
2813                         continue;
2814                 cb.cb_prop = p;
2815                 if ((ret = zfs_userspace(zhp, p, userspace_cb, &cb)) != 0)
2816                         return (ret);
2817         }
2818
2819         /* Sort the list */
2820         if ((node = uu_avl_first(avl_tree)) == NULL)
2821                 return (0);
2822
2823         us_populated = B_TRUE;
2824
2825         listpool = uu_list_pool_create("tmplist", sizeof (us_node_t),
2826             offsetof(us_node_t, usn_listnode), NULL, UU_DEFAULT);
2827         list = uu_list_create(listpool, NULL, UU_DEFAULT);
2828         uu_list_node_init(node, &node->usn_listnode, listpool);
2829
2830         while (node != NULL) {
2831                 rmnode = node;
2832                 node = uu_avl_next(avl_tree, node);
2833                 uu_avl_remove(avl_tree, rmnode);
2834                 if (uu_list_find(list, rmnode, NULL, &idx2) == NULL)
2835                         uu_list_insert(list, rmnode, idx2);
2836         }
2837
2838         for (node = uu_list_first(list); node != NULL;
2839             node = uu_list_next(list, node)) {
2840                 us_sort_info_t sortinfo = { sortcol, cb.cb_numname };
2841
2842                 if (uu_avl_find(avl_tree, node, &sortinfo, &idx) == NULL)
2843                         uu_avl_insert(avl_tree, node, idx);
2844         }
2845
2846         uu_list_destroy(list);
2847         uu_list_pool_destroy(listpool);
2848
2849         /* Print and free node nvlist memory */
2850         print_us(scripted, parsable, fields, types, cb.cb_width, B_TRUE,
2851             cb.cb_avl);
2852
2853         zfs_free_sort_columns(sortcol);
2854
2855         /* Clean up the AVL tree */
2856         if ((walk = uu_avl_walk_start(cb.cb_avl, UU_WALK_ROBUST)) == NULL)
2857                 nomem();
2858
2859         while ((node = uu_avl_walk_next(walk)) != NULL) {
2860                 uu_avl_remove(cb.cb_avl, node);
2861                 free(node);
2862         }
2863
2864         uu_avl_walk_end(walk);
2865         uu_avl_destroy(avl_tree);
2866         uu_avl_pool_destroy(avl_pool);
2867
2868         return (ret);
2869 }
2870
2871 /*
2872  * list [-Hp][-r|-d max] [-o property[,...]] [-s property] ... [-S property]
2873  *      [-t type[,...]] [filesystem|volume|snapshot] ...
2874  *
2875  *      -H      Scripted mode; elide headers and separate columns by tabs
2876  *      -p      Display values in parsable (literal) format.
2877  *      -r      Recurse over all children
2878  *      -d      Limit recursion by depth.
2879  *      -o      Control which fields to display.
2880  *      -s      Specify sort columns, descending order.
2881  *      -S      Specify sort columns, ascending order.
2882  *      -t      Control which object types to display.
2883  *
2884  * When given no arguments, list all filesystems in the system.
2885  * Otherwise, list the specified datasets, optionally recursing down them if
2886  * '-r' is specified.
2887  */
2888 typedef struct list_cbdata {
2889         boolean_t       cb_first;
2890         boolean_t       cb_literal;
2891         boolean_t       cb_scripted;
2892         zprop_list_t    *cb_proplist;
2893 } list_cbdata_t;
2894
2895 /*
2896  * Given a list of columns to display, output appropriate headers for each one.
2897  */
2898 static void
2899 print_header(list_cbdata_t *cb)
2900 {
2901         zprop_list_t *pl = cb->cb_proplist;
2902         char headerbuf[ZFS_MAXPROPLEN];
2903         const char *header;
2904         int i;
2905         boolean_t first = B_TRUE;
2906         boolean_t right_justify;
2907
2908         for (; pl != NULL; pl = pl->pl_next) {
2909                 if (!first) {
2910                         (void) printf("  ");
2911                 } else {
2912                         first = B_FALSE;
2913                 }
2914
2915                 right_justify = B_FALSE;
2916                 if (pl->pl_prop != ZPROP_INVAL) {
2917                         header = zfs_prop_column_name(pl->pl_prop);
2918                         right_justify = zfs_prop_align_right(pl->pl_prop);
2919                 } else {
2920                         for (i = 0; pl->pl_user_prop[i] != '\0'; i++)
2921                                 headerbuf[i] = toupper(pl->pl_user_prop[i]);
2922                         headerbuf[i] = '\0';
2923                         header = headerbuf;
2924                 }
2925
2926                 if (pl->pl_next == NULL && !right_justify)
2927                         (void) printf("%s", header);
2928                 else if (right_justify)
2929                         (void) printf("%*s", (int)pl->pl_width, header);
2930                 else
2931                         (void) printf("%-*s", (int)pl->pl_width, header);
2932         }
2933
2934         (void) printf("\n");
2935 }
2936
2937 /*
2938  * Given a dataset and a list of fields, print out all the properties according
2939  * to the described layout.
2940  */
2941 static void
2942 print_dataset(zfs_handle_t *zhp, list_cbdata_t *cb)
2943 {
2944         zprop_list_t *pl = cb->cb_proplist;
2945         boolean_t first = B_TRUE;
2946         char property[ZFS_MAXPROPLEN];
2947         nvlist_t *userprops = zfs_get_user_props(zhp);
2948         nvlist_t *propval;
2949         char *propstr;
2950         boolean_t right_justify;
2951
2952         for (; pl != NULL; pl = pl->pl_next) {
2953                 if (!first) {
2954                         if (cb->cb_scripted)
2955                                 (void) printf("\t");
2956                         else
2957                                 (void) printf("  ");
2958                 } else {
2959                         first = B_FALSE;
2960                 }
2961
2962                 if (pl->pl_prop == ZFS_PROP_NAME) {
2963                         (void) strlcpy(property, zfs_get_name(zhp),
2964                             sizeof (property));
2965                         propstr = property;
2966                         right_justify = zfs_prop_align_right(pl->pl_prop);
2967                 } else if (pl->pl_prop != ZPROP_INVAL) {
2968                         if (zfs_prop_get(zhp, pl->pl_prop, property,
2969                             sizeof (property), NULL, NULL, 0,
2970                             cb->cb_literal) != 0)
2971                                 propstr = "-";
2972                         else
2973                                 propstr = property;
2974                         right_justify = zfs_prop_align_right(pl->pl_prop);
2975                 } else if (zfs_prop_userquota(pl->pl_user_prop)) {
2976                         if (zfs_prop_get_userquota(zhp, pl->pl_user_prop,
2977                             property, sizeof (property), cb->cb_literal) != 0)
2978                                 propstr = "-";
2979                         else
2980                                 propstr = property;
2981                         right_justify = B_TRUE;
2982                 } else if (zfs_prop_written(pl->pl_user_prop)) {
2983                         if (zfs_prop_get_written(zhp, pl->pl_user_prop,
2984                             property, sizeof (property), cb->cb_literal) != 0)
2985                                 propstr = "-";
2986                         else
2987                                 propstr = property;
2988                         right_justify = B_TRUE;
2989                 } else {
2990                         if (nvlist_lookup_nvlist(userprops,
2991                             pl->pl_user_prop, &propval) != 0)
2992                                 propstr = "-";
2993                         else
2994                                 verify(nvlist_lookup_string(propval,
2995                                     ZPROP_VALUE, &propstr) == 0);
2996                         right_justify = B_FALSE;
2997                 }
2998
2999                 /*
3000                  * If this is being called in scripted mode, or if this is the
3001                  * last column and it is left-justified, don't include a width
3002                  * format specifier.
3003                  */
3004                 if (cb->cb_scripted || (pl->pl_next == NULL && !right_justify))
3005                         (void) printf("%s", propstr);
3006                 else if (right_justify)
3007                         (void) printf("%*s", (int)pl->pl_width, propstr);
3008                 else
3009                         (void) printf("%-*s", (int)pl->pl_width, propstr);
3010         }
3011
3012         (void) printf("\n");
3013 }
3014
3015 /*
3016  * Generic callback function to list a dataset or snapshot.
3017  */
3018 static int
3019 list_callback(zfs_handle_t *zhp, void *data)
3020 {
3021         list_cbdata_t *cbp = data;
3022
3023         if (cbp->cb_first) {
3024                 if (!cbp->cb_scripted)
3025                         print_header(cbp);
3026                 cbp->cb_first = B_FALSE;
3027         }
3028
3029         print_dataset(zhp, cbp);
3030
3031         return (0);
3032 }
3033
3034 static int
3035 zfs_do_list(int argc, char **argv)
3036 {
3037         int c;
3038         static char default_fields[] =
3039             "name,used,available,referenced,mountpoint";
3040         int types = ZFS_TYPE_DATASET;
3041         boolean_t types_specified = B_FALSE;
3042         char *fields = NULL;
3043         list_cbdata_t cb = { 0 };
3044         char *value;
3045         int limit = 0;
3046         int ret = 0;
3047         zfs_sort_column_t *sortcol = NULL;
3048         int flags = ZFS_ITER_PROP_LISTSNAPS | ZFS_ITER_ARGS_CAN_BE_PATHS;
3049
3050         /* check options */
3051         while ((c = getopt(argc, argv, "HS:d:o:prs:t:")) != -1) {
3052                 switch (c) {
3053                 case 'o':
3054                         fields = optarg;
3055                         break;
3056                 case 'p':
3057                         cb.cb_literal = B_TRUE;
3058                         flags |= ZFS_ITER_LITERAL_PROPS;
3059                         break;
3060                 case 'd':
3061                         limit = parse_depth(optarg, &flags);
3062                         break;
3063                 case 'r':
3064                         flags |= ZFS_ITER_RECURSE;
3065                         break;
3066                 case 'H':
3067                         cb.cb_scripted = B_TRUE;
3068                         break;
3069                 case 's':
3070                         if (zfs_add_sort_column(&sortcol, optarg,
3071                             B_FALSE) != 0) {
3072                                 (void) fprintf(stderr,
3073                                     gettext("invalid property '%s'\n"), optarg);
3074                                 usage(B_FALSE);
3075                         }
3076                         break;
3077                 case 'S':
3078                         if (zfs_add_sort_column(&sortcol, optarg,
3079                             B_TRUE) != 0) {
3080                                 (void) fprintf(stderr,
3081                                     gettext("invalid property '%s'\n"), optarg);
3082                                 usage(B_FALSE);
3083                         }
3084                         break;
3085                 case 't':
3086                         types = 0;
3087                         types_specified = B_TRUE;
3088                         flags &= ~ZFS_ITER_PROP_LISTSNAPS;
3089                         while (*optarg != '\0') {
3090                                 static char *type_subopts[] = { "filesystem",
3091                                     "volume", "snapshot", "snap", "bookmark",
3092                                     "all", NULL };
3093
3094                                 switch (getsubopt(&optarg, type_subopts,
3095                                     &value)) {
3096                                 case 0:
3097                                         types |= ZFS_TYPE_FILESYSTEM;
3098                                         break;
3099                                 case 1:
3100                                         types |= ZFS_TYPE_VOLUME;
3101                                         break;
3102                                 case 2:
3103                                 case 3:
3104                                         types |= ZFS_TYPE_SNAPSHOT;
3105                                         break;
3106                                 case 4:
3107                                         types |= ZFS_TYPE_BOOKMARK;
3108                                         break;
3109                                 case 5:
3110                                         types = ZFS_TYPE_DATASET |
3111                                             ZFS_TYPE_BOOKMARK;
3112                                         break;
3113                                 default:
3114                                         (void) fprintf(stderr,
3115                                             gettext("invalid type '%s'\n"),
3116                                             value);
3117                                         usage(B_FALSE);
3118                                 }
3119                         }
3120                         break;
3121                 case ':':
3122                         (void) fprintf(stderr, gettext("missing argument for "
3123                             "'%c' option\n"), optopt);
3124                         usage(B_FALSE);
3125                         break;
3126                 case '?':
3127                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3128                             optopt);
3129                         usage(B_FALSE);
3130                 }
3131         }
3132
3133         argc -= optind;
3134         argv += optind;
3135
3136         if (fields == NULL)
3137                 fields = default_fields;
3138
3139         /*
3140          * If we are only going to list snapshot names and sort by name,
3141          * then we can use faster version.
3142          */
3143         if (strcmp(fields, "name") == 0 && zfs_sort_only_by_name(sortcol))
3144                 flags |= ZFS_ITER_SIMPLE;
3145
3146         /*
3147          * If "-o space" and no types were specified, don't display snapshots.
3148          */
3149         if (strcmp(fields, "space") == 0 && types_specified == B_FALSE)
3150                 types &= ~ZFS_TYPE_SNAPSHOT;
3151
3152         /*
3153          * If the user specifies '-o all', the zprop_get_list() doesn't
3154          * normally include the name of the dataset.  For 'zfs list', we always
3155          * want this property to be first.
3156          */
3157         if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
3158             != 0)
3159                 usage(B_FALSE);
3160
3161         cb.cb_first = B_TRUE;
3162
3163         ret = zfs_for_each(argc, argv, flags, types, sortcol, &cb.cb_proplist,
3164             limit, list_callback, &cb);
3165
3166         zprop_free_list(cb.cb_proplist);
3167         zfs_free_sort_columns(sortcol);
3168
3169         if (ret == 0 && cb.cb_first && !cb.cb_scripted)
3170                 (void) fprintf(stderr, gettext("no datasets available\n"));
3171
3172         return (ret);
3173 }
3174
3175 /*
3176  * zfs rename [-f] <fs | snap | vol> <fs | snap | vol>
3177  * zfs rename [-f] -p <fs | vol> <fs | vol>
3178  * zfs rename -r <snap> <snap>
3179  *
3180  * Renames the given dataset to another of the same type.
3181  *
3182  * The '-p' flag creates all the non-existing ancestors of the target first.
3183  */
3184 /* ARGSUSED */
3185 static int
3186 zfs_do_rename(int argc, char **argv)
3187 {
3188         zfs_handle_t *zhp;
3189         int c;
3190         int ret = 0;
3191         boolean_t recurse = B_FALSE;
3192         boolean_t parents = B_FALSE;
3193         boolean_t force_unmount = B_FALSE;
3194
3195         /* check options */
3196         while ((c = getopt(argc, argv, "prf")) != -1) {
3197                 switch (c) {
3198                 case 'p':
3199                         parents = B_TRUE;
3200                         break;
3201                 case 'r':
3202                         recurse = B_TRUE;
3203                         break;
3204                 case 'f':
3205                         force_unmount = B_TRUE;
3206                         break;
3207                 case '?':
3208                 default:
3209                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3210                             optopt);
3211                         usage(B_FALSE);
3212                 }
3213         }
3214
3215         argc -= optind;
3216         argv += optind;
3217
3218         /* check number of arguments */
3219         if (argc < 1) {
3220                 (void) fprintf(stderr, gettext("missing source dataset "
3221                     "argument\n"));
3222                 usage(B_FALSE);
3223         }
3224         if (argc < 2) {
3225                 (void) fprintf(stderr, gettext("missing target dataset "
3226                     "argument\n"));
3227                 usage(B_FALSE);
3228         }
3229         if (argc > 2) {
3230                 (void) fprintf(stderr, gettext("too many arguments\n"));
3231                 usage(B_FALSE);
3232         }
3233
3234         if (recurse && parents) {
3235                 (void) fprintf(stderr, gettext("-p and -r options are mutually "
3236                     "exclusive\n"));
3237                 usage(B_FALSE);
3238         }
3239
3240         if (recurse && strchr(argv[0], '@') == 0) {
3241                 (void) fprintf(stderr, gettext("source dataset for recursive "
3242                     "rename must be a snapshot\n"));
3243                 usage(B_FALSE);
3244         }
3245
3246         if ((zhp = zfs_open(g_zfs, argv[0], parents ? ZFS_TYPE_FILESYSTEM |
3247             ZFS_TYPE_VOLUME : ZFS_TYPE_DATASET)) == NULL)
3248                 return (1);
3249
3250         /* If we were asked and the name looks good, try to create ancestors. */
3251         if (parents && zfs_name_valid(argv[1], zfs_get_type(zhp)) &&
3252             zfs_create_ancestors(g_zfs, argv[1]) != 0) {
3253                 zfs_close(zhp);
3254                 return (1);
3255         }
3256
3257         ret = (zfs_rename(zhp, argv[1], recurse, force_unmount) != 0);
3258
3259         zfs_close(zhp);
3260         return (ret);
3261 }
3262
3263 /*
3264  * zfs promote <fs>
3265  *
3266  * Promotes the given clone fs to be the parent
3267  */
3268 /* ARGSUSED */
3269 static int
3270 zfs_do_promote(int argc, char **argv)
3271 {
3272         zfs_handle_t *zhp;
3273         int ret = 0;
3274
3275         /* check options */
3276         if (argc > 1 && argv[1][0] == '-') {
3277                 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3278                     argv[1][1]);
3279                 usage(B_FALSE);
3280         }
3281
3282         /* check number of arguments */
3283         if (argc < 2) {
3284                 (void) fprintf(stderr, gettext("missing clone filesystem"
3285                     " argument\n"));
3286                 usage(B_FALSE);
3287         }
3288         if (argc > 2) {
3289                 (void) fprintf(stderr, gettext("too many arguments\n"));
3290                 usage(B_FALSE);
3291         }
3292
3293         zhp = zfs_open(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3294         if (zhp == NULL)
3295                 return (1);
3296
3297         ret = (zfs_promote(zhp) != 0);
3298
3299
3300         zfs_close(zhp);
3301         return (ret);
3302 }
3303
3304 /*
3305  * zfs rollback [-rRf] <snapshot>
3306  *
3307  *      -r      Delete any intervening snapshots before doing rollback
3308  *      -R      Delete any snapshots and their clones
3309  *      -f      ignored for backwards compatability
3310  *
3311  * Given a filesystem, rollback to a specific snapshot, discarding any changes
3312  * since then and making it the active dataset.  If more recent snapshots exist,
3313  * the command will complain unless the '-r' flag is given.
3314  */
3315 typedef struct rollback_cbdata {
3316         uint64_t        cb_create;
3317         boolean_t       cb_first;
3318         int             cb_doclones;
3319         char            *cb_target;
3320         int             cb_error;
3321         boolean_t       cb_recurse;
3322 } rollback_cbdata_t;
3323
3324 static int
3325 rollback_check_dependent(zfs_handle_t *zhp, void *data)
3326 {
3327         rollback_cbdata_t *cbp = data;
3328
3329         if (cbp->cb_first && cbp->cb_recurse) {
3330                 (void) fprintf(stderr, gettext("cannot rollback to "
3331                     "'%s': clones of previous snapshots exist\n"),
3332                     cbp->cb_target);
3333                 (void) fprintf(stderr, gettext("use '-R' to "
3334                     "force deletion of the following clones and "
3335                     "dependents:\n"));
3336                 cbp->cb_first = 0;
3337                 cbp->cb_error = 1;
3338         }
3339
3340         (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
3341
3342         zfs_close(zhp);
3343         return (0);
3344 }
3345
3346
3347 /*
3348  * Report any snapshots more recent than the one specified.  Used when '-r' is
3349  * not specified.  We reuse this same callback for the snapshot dependents - if
3350  * 'cb_dependent' is set, then this is a dependent and we should report it
3351  * without checking the transaction group.
3352  */
3353 static int
3354 rollback_check(zfs_handle_t *zhp, void *data)
3355 {
3356         rollback_cbdata_t *cbp = data;
3357
3358         if (cbp->cb_doclones) {
3359                 zfs_close(zhp);
3360                 return (0);
3361         }
3362
3363         if (zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > cbp->cb_create) {
3364                 if (cbp->cb_first && !cbp->cb_recurse) {
3365                         (void) fprintf(stderr, gettext("cannot "
3366                             "rollback to '%s': more recent snapshots "
3367                             "or bookmarks exist\n"),
3368                             cbp->cb_target);
3369                         (void) fprintf(stderr, gettext("use '-r' to "
3370                             "force deletion of the following "
3371                             "snapshots and bookmarks:\n"));
3372                         cbp->cb_first = 0;
3373                         cbp->cb_error = 1;
3374                 }
3375
3376                 if (cbp->cb_recurse) {
3377                         if (zfs_iter_dependents(zhp, B_TRUE,
3378                             rollback_check_dependent, cbp) != 0) {
3379                                 zfs_close(zhp);
3380                                 return (-1);
3381                         }
3382                 } else {
3383                         (void) fprintf(stderr, "%s\n",
3384                             zfs_get_name(zhp));
3385                 }
3386         }
3387         zfs_close(zhp);
3388         return (0);
3389 }
3390
3391 static int
3392 zfs_do_rollback(int argc, char **argv)
3393 {
3394         int ret = 0;
3395         int c;
3396         boolean_t force = B_FALSE;
3397         rollback_cbdata_t cb = { 0 };
3398         zfs_handle_t *zhp, *snap;
3399         char parentname[ZFS_MAXNAMELEN];
3400         char *delim;
3401
3402         /* check options */
3403         while ((c = getopt(argc, argv, "rRf")) != -1) {
3404                 switch (c) {
3405                 case 'r':
3406                         cb.cb_recurse = 1;
3407                         break;
3408                 case 'R':
3409                         cb.cb_recurse = 1;
3410                         cb.cb_doclones = 1;
3411                         break;
3412                 case 'f':
3413                         force = B_TRUE;
3414                         break;
3415                 case '?':
3416                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3417                             optopt);
3418                         usage(B_FALSE);
3419                 }
3420         }
3421
3422         argc -= optind;
3423         argv += optind;
3424
3425         /* check number of arguments */
3426         if (argc < 1) {
3427                 (void) fprintf(stderr, gettext("missing dataset argument\n"));
3428                 usage(B_FALSE);
3429         }
3430         if (argc > 1) {
3431                 (void) fprintf(stderr, gettext("too many arguments\n"));
3432                 usage(B_FALSE);
3433         }
3434
3435         /* open the snapshot */
3436         if ((snap = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
3437                 return (1);
3438
3439         /* open the parent dataset */
3440         (void) strlcpy(parentname, argv[0], sizeof (parentname));
3441         verify((delim = strrchr(parentname, '@')) != NULL);
3442         *delim = '\0';
3443         if ((zhp = zfs_open(g_zfs, parentname, ZFS_TYPE_DATASET)) == NULL) {
3444                 zfs_close(snap);
3445                 return (1);
3446         }
3447
3448         /*
3449          * Check for more recent snapshots and/or clones based on the presence
3450          * of '-r' and '-R'.
3451          */
3452         cb.cb_target = argv[0];
3453         cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG);
3454         cb.cb_first = B_TRUE;
3455         cb.cb_error = 0;
3456         if ((ret = zfs_iter_snapshots(zhp, B_FALSE, rollback_check, &cb)) != 0)
3457                 goto out;
3458         if ((ret = zfs_iter_bookmarks(zhp, rollback_check, &cb)) != 0)
3459                 goto out;
3460
3461         if ((ret = cb.cb_error) != 0)
3462                 goto out;
3463
3464         /*
3465          * Rollback parent to the given snapshot.
3466          */
3467         ret = zfs_rollback(zhp, snap, force);
3468
3469 out:
3470         zfs_close(snap);
3471         zfs_close(zhp);
3472
3473         if (ret == 0)
3474                 return (0);
3475         else
3476                 return (1);
3477 }
3478
3479 /*
3480  * zfs set property=value { fs | snap | vol } ...
3481  *
3482  * Sets the given property for all datasets specified on the command line.
3483  */
3484 typedef struct set_cbdata {
3485         char            *cb_propname;
3486         char            *cb_value;
3487 } set_cbdata_t;
3488
3489 static int
3490 set_callback(zfs_handle_t *zhp, void *data)
3491 {
3492         set_cbdata_t *cbp = data;
3493
3494         if (zfs_prop_set(zhp, cbp->cb_propname, cbp->cb_value) != 0) {
3495                 switch (libzfs_errno(g_zfs)) {
3496                 case EZFS_MOUNTFAILED:
3497                         (void) fprintf(stderr, gettext("property may be set "
3498                             "but unable to remount filesystem\n"));
3499                         break;
3500                 case EZFS_SHARENFSFAILED:
3501                         (void) fprintf(stderr, gettext("property may be set "
3502                             "but unable to reshare filesystem\n"));
3503                         break;
3504                 }
3505                 return (1);
3506         }
3507         return (0);
3508 }
3509
3510 static int
3511 zfs_do_set(int argc, char **argv)
3512 {
3513         set_cbdata_t cb;
3514         int ret = 0;
3515
3516         /* check for options */
3517         if (argc > 1 && argv[1][0] == '-') {
3518                 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3519                     argv[1][1]);
3520                 usage(B_FALSE);
3521         }
3522
3523         /* check number of arguments */
3524         if (argc < 2) {
3525                 (void) fprintf(stderr, gettext("missing property=value "
3526                     "argument\n"));
3527                 usage(B_FALSE);
3528         }
3529         if (argc < 3) {
3530                 (void) fprintf(stderr, gettext("missing dataset name\n"));
3531                 usage(B_FALSE);
3532         }
3533
3534         /* validate property=value argument */
3535         cb.cb_propname = argv[1];
3536         if (((cb.cb_value = strchr(cb.cb_propname, '=')) == NULL) ||
3537             (cb.cb_value[1] == '\0')) {
3538                 (void) fprintf(stderr, gettext("missing value in "
3539                     "property=value argument\n"));
3540                 usage(B_FALSE);
3541         }
3542
3543         *cb.cb_value = '\0';
3544         cb.cb_value++;
3545
3546         if (*cb.cb_propname == '\0') {
3547                 (void) fprintf(stderr,
3548                     gettext("missing property in property=value argument\n"));
3549                 usage(B_FALSE);
3550         }
3551
3552         ret = zfs_for_each(argc - 2, argv + 2, 0,
3553             ZFS_TYPE_DATASET, NULL, NULL, 0, set_callback, &cb);
3554
3555         return (ret);
3556 }
3557
3558 typedef struct snap_cbdata {
3559         nvlist_t *sd_nvl;
3560         boolean_t sd_recursive;
3561         const char *sd_snapname;
3562 } snap_cbdata_t;
3563
3564 static int
3565 zfs_snapshot_cb(zfs_handle_t *zhp, void *arg)
3566 {
3567         snap_cbdata_t *sd = arg;
3568         char *name;
3569         int rv = 0;
3570         int error;
3571
3572         if (sd->sd_recursive &&
3573             zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) != 0) {
3574                 zfs_close(zhp);
3575                 return (0);
3576         }
3577
3578         error = asprintf(&name, "%s@%s", zfs_get_name(zhp), sd->sd_snapname);
3579         if (error == -1)
3580                 nomem();
3581         fnvlist_add_boolean(sd->sd_nvl, name);
3582         free(name);
3583
3584         if (sd->sd_recursive)
3585                 rv = zfs_iter_filesystems(zhp, zfs_snapshot_cb, sd);
3586         zfs_close(zhp);
3587         return (rv);
3588 }
3589
3590 /*
3591  * zfs snapshot [-r] [-o prop=value] ... <fs@snap>
3592  *
3593  * Creates a snapshot with the given name.  While functionally equivalent to
3594  * 'zfs create', it is a separate command to differentiate intent.
3595  */
3596 static int
3597 zfs_do_snapshot(int argc, char **argv)
3598 {
3599         int ret = 0;
3600         signed char c;
3601         nvlist_t *props;
3602         snap_cbdata_t sd = { 0 };
3603         boolean_t multiple_snaps = B_FALSE;
3604
3605         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
3606                 nomem();
3607         if (nvlist_alloc(&sd.sd_nvl, NV_UNIQUE_NAME, 0) != 0)
3608                 nomem();
3609
3610         /* check options */
3611         while ((c = getopt(argc, argv, "ro:")) != -1) {
3612                 switch (c) {
3613                 case 'o':
3614                         if (parseprop(props))
3615                                 return (1);
3616                         break;
3617                 case 'r':
3618                         sd.sd_recursive = B_TRUE;
3619                         multiple_snaps = B_TRUE;
3620                         break;
3621                 case '?':
3622                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3623                             optopt);
3624                         goto usage;
3625                 }
3626         }
3627
3628         argc -= optind;
3629         argv += optind;
3630
3631         /* check number of arguments */
3632         if (argc < 1) {
3633                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
3634                 goto usage;
3635         }
3636
3637         if (argc > 1)
3638                 multiple_snaps = B_TRUE;
3639         for (; argc > 0; argc--, argv++) {
3640                 char *atp;
3641                 zfs_handle_t *zhp;
3642
3643                 atp = strchr(argv[0], '@');
3644                 if (atp == NULL)
3645                         goto usage;
3646                 *atp = '\0';
3647                 sd.sd_snapname = atp + 1;
3648                 zhp = zfs_open(g_zfs, argv[0],
3649                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3650                 if (zhp == NULL)
3651                         goto usage;
3652                 if (zfs_snapshot_cb(zhp, &sd) != 0)
3653                         goto usage;
3654         }
3655
3656         ret = zfs_snapshot_nvl(g_zfs, sd.sd_nvl, props);
3657         nvlist_free(sd.sd_nvl);
3658         nvlist_free(props);
3659         if (ret != 0 && multiple_snaps)
3660                 (void) fprintf(stderr, gettext("no snapshots were created\n"));
3661         return (ret != 0);
3662
3663 usage:
3664         nvlist_free(sd.sd_nvl);
3665         nvlist_free(props);
3666         usage(B_FALSE);
3667         return (-1);
3668 }
3669
3670 /*
3671  * Send a backup stream to stdout.
3672  */
3673 static int
3674 zfs_do_send(int argc, char **argv)
3675 {
3676         char *fromname = NULL;
3677         char *toname = NULL;
3678         char *cp;
3679         zfs_handle_t *zhp;
3680         sendflags_t flags = { 0 };
3681         int c, err;
3682         nvlist_t *dbgnv = NULL;
3683         boolean_t extraverbose = B_FALSE;
3684
3685         /* check options */
3686         while ((c = getopt(argc, argv, ":i:I:RDpvnPLe")) != -1) {
3687                 switch (c) {
3688                 case 'i':
3689                         if (fromname)
3690                                 usage(B_FALSE);
3691                         fromname = optarg;
3692                         break;
3693                 case 'I':
3694                         if (fromname)
3695                                 usage(B_FALSE);
3696                         fromname = optarg;
3697                         flags.doall = B_TRUE;
3698                         break;
3699                 case 'R':
3700                         flags.replicate = B_TRUE;
3701                         break;
3702                 case 'p':
3703                         flags.props = B_TRUE;
3704                         break;
3705                 case 'P':
3706                         flags.parsable = B_TRUE;
3707                         flags.verbose = B_TRUE;
3708                         break;
3709                 case 'v':
3710                         if (flags.verbose)
3711                                 extraverbose = B_TRUE;
3712                         flags.verbose = B_TRUE;
3713                         flags.progress = B_TRUE;
3714                         break;
3715                 case 'D':
3716                         flags.dedup = B_TRUE;
3717                         break;
3718                 case 'n':
3719                         flags.dryrun = B_TRUE;
3720                         break;
3721                 case 'L':
3722                         flags.largeblock = B_TRUE;
3723                         break;
3724                 case 'e':
3725                         flags.embed_data = B_TRUE;
3726                         break;
3727                 case ':':
3728                         (void) fprintf(stderr, gettext("missing argument for "
3729                             "'%c' option\n"), optopt);
3730                         usage(B_FALSE);
3731                         break;
3732                 case '?':
3733                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3734                             optopt);
3735                         usage(B_FALSE);
3736                 }
3737         }
3738
3739         argc -= optind;
3740         argv += optind;
3741
3742         /* check number of arguments */
3743         if (argc < 1) {
3744                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
3745                 usage(B_FALSE);
3746         }
3747         if (argc > 1) {
3748                 (void) fprintf(stderr, gettext("too many arguments\n"));
3749                 usage(B_FALSE);
3750         }
3751
3752         if (!flags.dryrun && isatty(STDOUT_FILENO)) {
3753                 (void) fprintf(stderr,
3754                     gettext("Error: Stream can not be written to a terminal.\n"
3755                     "You must redirect standard output.\n"));
3756                 return (1);
3757         }
3758
3759         /*
3760          * Special case sending a filesystem, or from a bookmark.
3761          */
3762         if (strchr(argv[0], '@') == NULL ||
3763             (fromname && strchr(fromname, '#') != NULL)) {
3764                 char frombuf[ZFS_MAXNAMELEN];
3765                 enum lzc_send_flags lzc_flags = 0;
3766
3767                 if (flags.replicate || flags.doall || flags.props ||
3768                     flags.dedup || flags.dryrun || flags.verbose ||
3769                     flags.progress) {
3770                         (void) fprintf(stderr,
3771                             gettext("Error: "
3772                             "Unsupported flag with filesystem or bookmark.\n"));
3773                         return (1);
3774                 }
3775
3776                 zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET);
3777                 if (zhp == NULL)
3778                         return (1);
3779
3780                 if (flags.largeblock)
3781                         lzc_flags |= LZC_SEND_FLAG_LARGE_BLOCK;
3782                 if (flags.embed_data)
3783                         lzc_flags |= LZC_SEND_FLAG_EMBED_DATA;
3784
3785                 if (fromname != NULL &&
3786                     (fromname[0] == '#' || fromname[0] == '@')) {
3787                         /*
3788                          * Incremental source name begins with # or @.
3789                          * Default to same fs as target.
3790                          */
3791                         (void) strncpy(frombuf, argv[0], sizeof (frombuf));
3792                         cp = strchr(frombuf, '@');
3793                         if (cp != NULL)
3794                                 *cp = '\0';
3795                         (void) strlcat(frombuf, fromname, sizeof (frombuf));
3796                         fromname = frombuf;
3797                 }
3798                 err = zfs_send_one(zhp, fromname, STDOUT_FILENO, lzc_flags);
3799                 zfs_close(zhp);
3800                 return (err != 0);
3801         }
3802
3803         cp = strchr(argv[0], '@');
3804         *cp = '\0';
3805         toname = cp + 1;
3806         zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3807         if (zhp == NULL)
3808                 return (1);
3809
3810         /*
3811          * If they specified the full path to the snapshot, chop off
3812          * everything except the short name of the snapshot, but special
3813          * case if they specify the origin.
3814          */
3815         if (fromname && (cp = strchr(fromname, '@')) != NULL) {
3816                 char origin[ZFS_MAXNAMELEN];
3817                 zprop_source_t src;
3818
3819                 (void) zfs_prop_get(zhp, ZFS_PROP_ORIGIN,
3820                     origin, sizeof (origin), &src, NULL, 0, B_FALSE);
3821
3822                 if (strcmp(origin, fromname) == 0) {
3823                         fromname = NULL;
3824                         flags.fromorigin = B_TRUE;
3825                 } else {
3826                         *cp = '\0';
3827                         if (cp != fromname && strcmp(argv[0], fromname)) {
3828                                 (void) fprintf(stderr,
3829                                     gettext("incremental source must be "
3830                                     "in same filesystem\n"));
3831                                 usage(B_FALSE);
3832                         }
3833                         fromname = cp + 1;
3834                         if (strchr(fromname, '@') || strchr(fromname, '/')) {
3835                                 (void) fprintf(stderr,
3836                                     gettext("invalid incremental source\n"));
3837                                 usage(B_FALSE);
3838                         }
3839                 }
3840         }
3841
3842         if (flags.replicate && fromname == NULL)
3843                 flags.doall = B_TRUE;
3844
3845         err = zfs_send(zhp, fromname, toname, &flags, STDOUT_FILENO, NULL, 0,
3846             extraverbose ? &dbgnv : NULL);
3847
3848         if (extraverbose && dbgnv != NULL) {
3849                 /*
3850                  * dump_nvlist prints to stdout, but that's been
3851                  * redirected to a file.  Make it print to stderr
3852                  * instead.
3853                  */
3854                 (void) dup2(STDERR_FILENO, STDOUT_FILENO);
3855                 dump_nvlist(dbgnv, 0);
3856                 nvlist_free(dbgnv);
3857         }
3858         zfs_close(zhp);
3859
3860         return (err != 0);
3861 }
3862
3863 /*
3864  * zfs receive [-vnFu] [-d | -e] <fs@snap>
3865  *
3866  * Restore a backup stream from stdin.
3867  */
3868 static int
3869 zfs_do_receive(int argc, char **argv)
3870 {
3871         int c, err;
3872         recvflags_t flags = { 0 };
3873
3874         /* check options */
3875         while ((c = getopt(argc, argv, ":denuvF")) != -1) {
3876                 switch (c) {
3877                 case 'd':
3878                         flags.isprefix = B_TRUE;
3879                         break;
3880                 case 'e':
3881                         flags.isprefix = B_TRUE;
3882                         flags.istail = B_TRUE;
3883                         break;
3884                 case 'n':
3885                         flags.dryrun = B_TRUE;
3886                         break;
3887                 case 'u':
3888                         flags.nomount = B_TRUE;
3889                         break;
3890                 case 'v':
3891                         flags.verbose = B_TRUE;
3892                         break;
3893                 case 'F':
3894                         flags.force = B_TRUE;
3895                         break;
3896                 case ':':
3897                         (void) fprintf(stderr, gettext("missing argument for "
3898                             "'%c' option\n"), optopt);
3899                         usage(B_FALSE);
3900                         break;
3901                 case '?':
3902                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3903                             optopt);
3904                         usage(B_FALSE);
3905                 }
3906         }
3907
3908         argc -= optind;
3909         argv += optind;
3910
3911         /* check number of arguments */
3912         if (argc < 1) {
3913                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
3914                 usage(B_FALSE);
3915         }
3916         if (argc > 1) {
3917                 (void) fprintf(stderr, gettext("too many arguments\n"));
3918                 usage(B_FALSE);
3919         }
3920
3921         if (isatty(STDIN_FILENO)) {
3922                 (void) fprintf(stderr,
3923                     gettext("Error: Backup stream can not be read "
3924                     "from a terminal.\n"
3925                     "You must redirect standard input.\n"));
3926                 return (1);
3927         }
3928
3929         err = zfs_receive(g_zfs, argv[0], &flags, STDIN_FILENO, NULL);
3930
3931         return (err != 0);
3932 }
3933
3934 /*
3935  * allow/unallow stuff
3936  */
3937 /* copied from zfs/sys/dsl_deleg.h */
3938 #define ZFS_DELEG_PERM_CREATE           "create"
3939 #define ZFS_DELEG_PERM_DESTROY          "destroy"
3940 #define ZFS_DELEG_PERM_SNAPSHOT         "snapshot"
3941 #define ZFS_DELEG_PERM_ROLLBACK         "rollback"
3942 #define ZFS_DELEG_PERM_CLONE            "clone"
3943 #define ZFS_DELEG_PERM_PROMOTE          "promote"
3944 #define ZFS_DELEG_PERM_RENAME           "rename"
3945 #define ZFS_DELEG_PERM_MOUNT            "mount"
3946 #define ZFS_DELEG_PERM_SHARE            "share"
3947 #define ZFS_DELEG_PERM_SEND             "send"
3948 #define ZFS_DELEG_PERM_RECEIVE          "receive"
3949 #define ZFS_DELEG_PERM_ALLOW            "allow"
3950 #define ZFS_DELEG_PERM_USERPROP         "userprop"
3951 #define ZFS_DELEG_PERM_VSCAN            "vscan" /* ??? */
3952 #define ZFS_DELEG_PERM_USERQUOTA        "userquota"
3953 #define ZFS_DELEG_PERM_GROUPQUOTA       "groupquota"
3954 #define ZFS_DELEG_PERM_USERUSED         "userused"
3955 #define ZFS_DELEG_PERM_GROUPUSED        "groupused"
3956 #define ZFS_DELEG_PERM_HOLD             "hold"
3957 #define ZFS_DELEG_PERM_RELEASE          "release"
3958 #define ZFS_DELEG_PERM_DIFF             "diff"
3959 #define ZFS_DELEG_PERM_BOOKMARK         "bookmark"
3960
3961 #define ZFS_NUM_DELEG_NOTES ZFS_DELEG_NOTE_NONE
3962
3963 static zfs_deleg_perm_tab_t zfs_deleg_perm_tbl[] = {
3964         { ZFS_DELEG_PERM_ALLOW, ZFS_DELEG_NOTE_ALLOW },
3965         { ZFS_DELEG_PERM_CLONE, ZFS_DELEG_NOTE_CLONE },
3966         { ZFS_DELEG_PERM_CREATE, ZFS_DELEG_NOTE_CREATE },
3967         { ZFS_DELEG_PERM_DESTROY, ZFS_DELEG_NOTE_DESTROY },
3968         { ZFS_DELEG_PERM_DIFF, ZFS_DELEG_NOTE_DIFF},
3969         { ZFS_DELEG_PERM_HOLD, ZFS_DELEG_NOTE_HOLD },
3970         { ZFS_DELEG_PERM_MOUNT, ZFS_DELEG_NOTE_MOUNT },
3971         { ZFS_DELEG_PERM_PROMOTE, ZFS_DELEG_NOTE_PROMOTE },
3972         { ZFS_DELEG_PERM_RECEIVE, ZFS_DELEG_NOTE_RECEIVE },
3973         { ZFS_DELEG_PERM_RELEASE, ZFS_DELEG_NOTE_RELEASE },
3974         { ZFS_DELEG_PERM_RENAME, ZFS_DELEG_NOTE_RENAME },
3975         { ZFS_DELEG_PERM_ROLLBACK, ZFS_DELEG_NOTE_ROLLBACK },
3976         { ZFS_DELEG_PERM_SEND, ZFS_DELEG_NOTE_SEND },
3977         { ZFS_DELEG_PERM_SHARE, ZFS_DELEG_NOTE_SHARE },
3978         { ZFS_DELEG_PERM_SNAPSHOT, ZFS_DELEG_NOTE_SNAPSHOT },
3979         { ZFS_DELEG_PERM_BOOKMARK, ZFS_DELEG_NOTE_BOOKMARK },
3980
3981         { ZFS_DELEG_PERM_GROUPQUOTA, ZFS_DELEG_NOTE_GROUPQUOTA },
3982         { ZFS_DELEG_PERM_GROUPUSED, ZFS_DELEG_NOTE_GROUPUSED },
3983         { ZFS_DELEG_PERM_USERPROP, ZFS_DELEG_NOTE_USERPROP },
3984         { ZFS_DELEG_PERM_USERQUOTA, ZFS_DELEG_NOTE_USERQUOTA },
3985         { ZFS_DELEG_PERM_USERUSED, ZFS_DELEG_NOTE_USERUSED },
3986         { NULL, ZFS_DELEG_NOTE_NONE }
3987 };
3988
3989 /* permission structure */
3990 typedef struct deleg_perm {
3991         zfs_deleg_who_type_t    dp_who_type;
3992         const char              *dp_name;
3993         boolean_t               dp_local;
3994         boolean_t               dp_descend;
3995 } deleg_perm_t;
3996
3997 /* */
3998 typedef struct deleg_perm_node {
3999         deleg_perm_t            dpn_perm;
4000
4001         uu_avl_node_t           dpn_avl_node;
4002 } deleg_perm_node_t;
4003
4004 typedef struct fs_perm fs_perm_t;
4005
4006 /* permissions set */
4007 typedef struct who_perm {
4008         zfs_deleg_who_type_t    who_type;
4009         const char              *who_name;              /* id */
4010         char                    who_ug_name[256];       /* user/group name */
4011         fs_perm_t               *who_fsperm;            /* uplink */
4012
4013         uu_avl_t                *who_deleg_perm_avl;    /* permissions */
4014 } who_perm_t;
4015
4016 /* */
4017 typedef struct who_perm_node {
4018         who_perm_t      who_perm;
4019         uu_avl_node_t   who_avl_node;
4020 } who_perm_node_t;
4021
4022 typedef struct fs_perm_set fs_perm_set_t;
4023 /* fs permissions */
4024 struct fs_perm {
4025         const char              *fsp_name;
4026
4027         uu_avl_t                *fsp_sc_avl;    /* sets,create */
4028         uu_avl_t                *fsp_uge_avl;   /* user,group,everyone */
4029
4030         fs_perm_set_t           *fsp_set;       /* uplink */
4031 };
4032
4033 /* */
4034 typedef struct fs_perm_node {
4035         fs_perm_t       fspn_fsperm;
4036         uu_avl_t        *fspn_avl;
4037
4038         uu_list_node_t  fspn_list_node;
4039 } fs_perm_node_t;
4040
4041 /* top level structure */
4042 struct fs_perm_set {
4043         uu_list_pool_t  *fsps_list_pool;
4044         uu_list_t       *fsps_list; /* list of fs_perms */
4045
4046         uu_avl_pool_t   *fsps_named_set_avl_pool;
4047         uu_avl_pool_t   *fsps_who_perm_avl_pool;
4048         uu_avl_pool_t   *fsps_deleg_perm_avl_pool;
4049 };
4050
4051 static inline const char *
4052 deleg_perm_type(zfs_deleg_note_t note)
4053 {
4054         /* subcommands */
4055         switch (note) {
4056                 /* SUBCOMMANDS */
4057                 /* OTHER */
4058         case ZFS_DELEG_NOTE_GROUPQUOTA:
4059         case ZFS_DELEG_NOTE_GROUPUSED:
4060         case ZFS_DELEG_NOTE_USERPROP:
4061         case ZFS_DELEG_NOTE_USERQUOTA:
4062         case ZFS_DELEG_NOTE_USERUSED:
4063                 /* other */
4064                 return (gettext("other"));
4065         default:
4066                 return (gettext("subcommand"));
4067         }
4068 }
4069
4070 static int inline
4071 who_type2weight(zfs_deleg_who_type_t who_type)
4072 {
4073         int res;
4074         switch (who_type) {
4075                 case ZFS_DELEG_NAMED_SET_SETS:
4076                 case ZFS_DELEG_NAMED_SET:
4077                         res = 0;
4078                         break;
4079                 case ZFS_DELEG_CREATE_SETS:
4080                 case ZFS_DELEG_CREATE:
4081                         res = 1;
4082                         break;
4083                 case ZFS_DELEG_USER_SETS:
4084                 case ZFS_DELEG_USER:
4085                         res = 2;
4086                         break;
4087                 case ZFS_DELEG_GROUP_SETS:
4088                 case ZFS_DELEG_GROUP:
4089                         res = 3;
4090                         break;
4091                 case ZFS_DELEG_EVERYONE_SETS:
4092                 case ZFS_DELEG_EVERYONE:
4093                         res = 4;
4094                         break;
4095                 default:
4096                         res = -1;
4097         }
4098
4099         return (res);
4100 }
4101
4102 /* ARGSUSED */
4103 static int
4104 who_perm_compare(const void *larg, const void *rarg, void *unused)
4105 {
4106         const who_perm_node_t *l = larg;
4107         const who_perm_node_t *r = rarg;
4108         zfs_deleg_who_type_t ltype = l->who_perm.who_type;
4109         zfs_deleg_who_type_t rtype = r->who_perm.who_type;
4110         int lweight = who_type2weight(ltype);
4111         int rweight = who_type2weight(rtype);
4112         int res = lweight - rweight;
4113         if (res == 0)
4114                 res = strncmp(l->who_perm.who_name, r->who_perm.who_name,
4115                     ZFS_MAX_DELEG_NAME-1);
4116
4117         if (res == 0)
4118                 return (0);
4119         if (res > 0)
4120                 return (1);
4121         else
4122                 return (-1);
4123 }
4124
4125 /* ARGSUSED */
4126 static int
4127 deleg_perm_compare(const void *larg, const void *rarg, void *unused)
4128 {
4129         const deleg_perm_node_t *l = larg;
4130         const deleg_perm_node_t *r = rarg;
4131         int res =  strncmp(l->dpn_perm.dp_name, r->dpn_perm.dp_name,
4132             ZFS_MAX_DELEG_NAME-1);
4133
4134         if (res == 0)
4135                 return (0);
4136
4137         if (res > 0)
4138                 return (1);
4139         else
4140                 return (-1);
4141 }
4142
4143 static inline void
4144 fs_perm_set_init(fs_perm_set_t *fspset)
4145 {
4146         bzero(fspset, sizeof (fs_perm_set_t));
4147
4148         if ((fspset->fsps_list_pool = uu_list_pool_create("fsps_list_pool",
4149             sizeof (fs_perm_node_t), offsetof(fs_perm_node_t, fspn_list_node),
4150             NULL, UU_DEFAULT)) == NULL)
4151                 nomem();
4152         if ((fspset->fsps_list = uu_list_create(fspset->fsps_list_pool, NULL,
4153             UU_DEFAULT)) == NULL)
4154                 nomem();
4155
4156         if ((fspset->fsps_named_set_avl_pool = uu_avl_pool_create(
4157             "named_set_avl_pool", sizeof (who_perm_node_t), offsetof(
4158             who_perm_node_t, who_avl_node), who_perm_compare,
4159             UU_DEFAULT)) == NULL)
4160                 nomem();
4161
4162         if ((fspset->fsps_who_perm_avl_pool = uu_avl_pool_create(
4163             "who_perm_avl_pool", sizeof (who_perm_node_t), offsetof(
4164             who_perm_node_t, who_avl_node), who_perm_compare,
4165             UU_DEFAULT)) == NULL)
4166                 nomem();
4167
4168         if ((fspset->fsps_deleg_perm_avl_pool = uu_avl_pool_create(
4169             "deleg_perm_avl_pool", sizeof (deleg_perm_node_t), offsetof(
4170             deleg_perm_node_t, dpn_avl_node), deleg_perm_compare, UU_DEFAULT))
4171             == NULL)
4172                 nomem();
4173 }
4174
4175 static inline void fs_perm_fini(fs_perm_t *);
4176 static inline void who_perm_fini(who_perm_t *);
4177
4178 static inline void
4179 fs_perm_set_fini(fs_perm_set_t *fspset)
4180 {
4181         fs_perm_node_t *node = uu_list_first(fspset->fsps_list);
4182
4183         while (node != NULL) {
4184                 fs_perm_node_t *next_node =
4185                     uu_list_next(fspset->fsps_list, node);
4186                 fs_perm_t *fsperm = &node->fspn_fsperm;
4187                 fs_perm_fini(fsperm);
4188                 uu_list_remove(fspset->fsps_list, node);
4189                 free(node);
4190                 node = next_node;
4191         }
4192
4193         uu_avl_pool_destroy(fspset->fsps_named_set_avl_pool);
4194         uu_avl_pool_destroy(fspset->fsps_who_perm_avl_pool);
4195         uu_avl_pool_destroy(fspset->fsps_deleg_perm_avl_pool);
4196 }
4197
4198 static inline void
4199 deleg_perm_init(deleg_perm_t *deleg_perm, zfs_deleg_who_type_t type,
4200     const char *name)
4201 {
4202         deleg_perm->dp_who_type = type;
4203         deleg_perm->dp_name = name;
4204 }
4205
4206 static inline void
4207 who_perm_init(who_perm_t *who_perm, fs_perm_t *fsperm,
4208     zfs_deleg_who_type_t type, const char *name)
4209 {
4210         uu_avl_pool_t   *pool;
4211         pool = fsperm->fsp_set->fsps_deleg_perm_avl_pool;
4212
4213         bzero(who_perm, sizeof (who_perm_t));
4214
4215         if ((who_perm->who_deleg_perm_avl = uu_avl_create(pool, NULL,
4216             UU_DEFAULT)) == NULL)
4217                 nomem();
4218
4219         who_perm->who_type = type;
4220         who_perm->who_name = name;
4221         who_perm->who_fsperm = fsperm;
4222 }
4223
4224 static inline void
4225 who_perm_fini(who_perm_t *who_perm)
4226 {
4227         deleg_perm_node_t *node = uu_avl_first(who_perm->who_deleg_perm_avl);
4228
4229         while (node != NULL) {
4230                 deleg_perm_node_t *next_node =
4231                     uu_avl_next(who_perm->who_deleg_perm_avl, node);
4232
4233                 uu_avl_remove(who_perm->who_deleg_perm_avl, node);
4234                 free(node);
4235                 node = next_node;
4236         }
4237
4238         uu_avl_destroy(who_perm->who_deleg_perm_avl);
4239 }
4240
4241 static inline void
4242 fs_perm_init(fs_perm_t *fsperm, fs_perm_set_t *fspset, const char *fsname)
4243 {
4244         uu_avl_pool_t   *nset_pool = fspset->fsps_named_set_avl_pool;
4245         uu_avl_pool_t   *who_pool = fspset->fsps_who_perm_avl_pool;
4246
4247         bzero(fsperm, sizeof (fs_perm_t));
4248
4249         if ((fsperm->fsp_sc_avl = uu_avl_create(nset_pool, NULL, UU_DEFAULT))
4250             == NULL)
4251                 nomem();
4252
4253         if ((fsperm->fsp_uge_avl = uu_avl_create(who_pool, NULL, UU_DEFAULT))
4254             == NULL)
4255                 nomem();
4256
4257         fsperm->fsp_set = fspset;
4258         fsperm->fsp_name = fsname;
4259 }
4260
4261 static inline void
4262 fs_perm_fini(fs_perm_t *fsperm)
4263 {
4264         who_perm_node_t *node = uu_avl_first(fsperm->fsp_sc_avl);
4265         while (node != NULL) {
4266                 who_perm_node_t *next_node = uu_avl_next(fsperm->fsp_sc_avl,
4267                     node);
4268                 who_perm_t *who_perm = &node->who_perm;
4269                 who_perm_fini(who_perm);
4270                 uu_avl_remove(fsperm->fsp_sc_avl, node);
4271                 free(node);
4272                 node = next_node;
4273         }
4274
4275         node = uu_avl_first(fsperm->fsp_uge_avl);
4276         while (node != NULL) {
4277                 who_perm_node_t *next_node = uu_avl_next(fsperm->fsp_uge_avl,
4278                     node);
4279                 who_perm_t *who_perm = &node->who_perm;
4280                 who_perm_fini(who_perm);
4281                 uu_avl_remove(fsperm->fsp_uge_avl, node);
4282                 free(node);
4283                 node = next_node;
4284         }
4285
4286         uu_avl_destroy(fsperm->fsp_sc_avl);
4287         uu_avl_destroy(fsperm->fsp_uge_avl);
4288 }
4289
4290 static void inline
4291 set_deleg_perm_node(uu_avl_t *avl, deleg_perm_node_t *node,
4292     zfs_deleg_who_type_t who_type, const char *name, char locality)
4293 {
4294         uu_avl_index_t idx = 0;
4295
4296         deleg_perm_node_t *found_node = NULL;
4297         deleg_perm_t    *deleg_perm = &node->dpn_perm;
4298
4299         deleg_perm_init(deleg_perm, who_type, name);
4300
4301         if ((found_node = uu_avl_find(avl, node, NULL, &idx))
4302             == NULL)
4303                 uu_avl_insert(avl, node, idx);
4304         else {
4305                 node = found_node;
4306                 deleg_perm = &node->dpn_perm;
4307         }
4308
4309
4310         switch (locality) {
4311         case ZFS_DELEG_LOCAL:
4312                 deleg_perm->dp_local = B_TRUE;
4313                 break;
4314         case ZFS_DELEG_DESCENDENT:
4315                 deleg_perm->dp_descend = B_TRUE;
4316                 break;
4317         case ZFS_DELEG_NA:
4318                 break;
4319         default:
4320                 assert(B_FALSE); /* invalid locality */
4321         }
4322 }
4323
4324 static inline int
4325 parse_who_perm(who_perm_t *who_perm, nvlist_t *nvl, char locality)
4326 {
4327         nvpair_t *nvp = NULL;
4328         fs_perm_set_t *fspset = who_perm->who_fsperm->fsp_set;
4329         uu_avl_t *avl = who_perm->who_deleg_perm_avl;
4330         zfs_deleg_who_type_t who_type = who_perm->who_type;
4331
4332         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4333                 const char *name = nvpair_name(nvp);
4334                 data_type_t type = nvpair_type(nvp);
4335                 uu_avl_pool_t *avl_pool = fspset->fsps_deleg_perm_avl_pool;
4336                 deleg_perm_node_t *node =
4337                     safe_malloc(sizeof (deleg_perm_node_t));
4338
4339                 VERIFY(type == DATA_TYPE_BOOLEAN);
4340
4341                 uu_avl_node_init(node, &node->dpn_avl_node, avl_pool);
4342                 set_deleg_perm_node(avl, node, who_type, name, locality);
4343         }
4344
4345         return (0);
4346 }
4347
4348 static inline int
4349 parse_fs_perm(fs_perm_t *fsperm, nvlist_t *nvl)
4350 {
4351         nvpair_t *nvp = NULL;
4352         fs_perm_set_t *fspset = fsperm->fsp_set;
4353
4354         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4355                 nvlist_t *nvl2 = NULL;
4356                 const char *name = nvpair_name(nvp);
4357                 uu_avl_t *avl = NULL;
4358                 uu_avl_pool_t *avl_pool = NULL;
4359                 zfs_deleg_who_type_t perm_type = name[0];
4360                 char perm_locality = name[1];
4361                 const char *perm_name = name + 3;
4362                 boolean_t is_set = B_TRUE;
4363                 who_perm_t *who_perm = NULL;
4364
4365                 assert('$' == name[2]);
4366
4367                 if (nvpair_value_nvlist(nvp, &nvl2) != 0)
4368                         return (-1);
4369
4370                 switch (perm_type) {
4371                 case ZFS_DELEG_CREATE:
4372                 case ZFS_DELEG_CREATE_SETS:
4373                 case ZFS_DELEG_NAMED_SET:
4374                 case ZFS_DELEG_NAMED_SET_SETS:
4375                         avl_pool = fspset->fsps_named_set_avl_pool;
4376                         avl = fsperm->fsp_sc_avl;
4377                         break;
4378                 case ZFS_DELEG_USER:
4379                 case ZFS_DELEG_USER_SETS:
4380                 case ZFS_DELEG_GROUP:
4381                 case ZFS_DELEG_GROUP_SETS:
4382                 case ZFS_DELEG_EVERYONE:
4383                 case ZFS_DELEG_EVERYONE_SETS:
4384                         avl_pool = fspset->fsps_who_perm_avl_pool;
4385                         avl = fsperm->fsp_uge_avl;
4386                         break;
4387                 default:
4388                         break;
4389                 }
4390
4391                 if (is_set) {
4392                         who_perm_node_t *found_node = NULL;
4393                         who_perm_node_t *node = safe_malloc(
4394                             sizeof (who_perm_node_t));
4395                         who_perm = &node->who_perm;
4396                         uu_avl_index_t idx = 0;
4397
4398                         uu_avl_node_init(node, &node->who_avl_node, avl_pool);
4399                         who_perm_init(who_perm, fsperm, perm_type, perm_name);
4400
4401                         if ((found_node = uu_avl_find(avl, node, NULL, &idx))
4402                             == NULL) {
4403                                 if (avl == fsperm->fsp_uge_avl) {
4404                                         uid_t rid = 0;
4405                                         struct passwd *p = NULL;
4406                                         struct group *g = NULL;
4407                                         const char *nice_name = NULL;
4408
4409                                         switch (perm_type) {
4410                                         case ZFS_DELEG_USER_SETS:
4411                                         case ZFS_DELEG_USER:
4412                                                 rid = atoi(perm_name);
4413                                                 p = getpwuid(rid);
4414                                                 if (p)
4415                                                         nice_name = p->pw_name;
4416                                                 break;
4417                                         case ZFS_DELEG_GROUP_SETS:
4418                                         case ZFS_DELEG_GROUP:
4419                                                 rid = atoi(perm_name);
4420                                                 g = getgrgid(rid);
4421                                                 if (g)
4422                                                         nice_name = g->gr_name;
4423                                                 break;
4424                                         default:
4425                                                 break;
4426                                         }
4427
4428                                         if (nice_name != NULL)
4429                                                 (void) strlcpy(
4430                                                     node->who_perm.who_ug_name,
4431                                                     nice_name, 256);
4432                                 }
4433
4434                                 uu_avl_insert(avl, node, idx);
4435                         } else {
4436                                 node = found_node;
4437                                 who_perm = &node->who_perm;
4438                         }
4439                 }
4440
4441                 (void) parse_who_perm(who_perm, nvl2, perm_locality);
4442         }
4443
4444         return (0);
4445 }
4446
4447 static inline int
4448 parse_fs_perm_set(fs_perm_set_t *fspset, nvlist_t *nvl)
4449 {
4450         nvpair_t *nvp = NULL;
4451         uu_avl_index_t idx = 0;
4452
4453         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4454                 nvlist_t *nvl2 = NULL;
4455                 const char *fsname = nvpair_name(nvp);
4456                 data_type_t type = nvpair_type(nvp);
4457                 fs_perm_t *fsperm = NULL;
4458                 fs_perm_node_t *node = safe_malloc(sizeof (fs_perm_node_t));
4459                 if (node == NULL)
4460                         nomem();
4461
4462                 fsperm = &node->fspn_fsperm;
4463
4464                 VERIFY(DATA_TYPE_NVLIST == type);
4465
4466                 uu_list_node_init(node, &node->fspn_list_node,
4467                     fspset->fsps_list_pool);
4468
4469                 idx = uu_list_numnodes(fspset->fsps_list);
4470                 fs_perm_init(fsperm, fspset, fsname);
4471
4472                 if (nvpair_value_nvlist(nvp, &nvl2) != 0)
4473                         return (-1);
4474
4475                 (void) parse_fs_perm(fsperm, nvl2);
4476
4477                 uu_list_insert(fspset->fsps_list, node, idx);
4478         }
4479
4480         return (0);
4481 }
4482
4483 static inline const char *
4484 deleg_perm_comment(zfs_deleg_note_t note)
4485 {
4486         const char *str = "";
4487
4488         /* subcommands */
4489         switch (note) {
4490                 /* SUBCOMMANDS */
4491         case ZFS_DELEG_NOTE_ALLOW:
4492                 str = gettext("Must also have the permission that is being"
4493                     "\n\t\t\t\tallowed");
4494                 break;
4495         case ZFS_DELEG_NOTE_CLONE:
4496                 str = gettext("Must also have the 'create' ability and 'mount'"
4497                     "\n\t\t\t\tability in the origin file system");
4498                 break;
4499         case ZFS_DELEG_NOTE_CREATE:
4500                 str = gettext("Must also have the 'mount' ability");
4501                 break;
4502         case ZFS_DELEG_NOTE_DESTROY:
4503                 str = gettext("Must also have the 'mount' ability");
4504                 break;
4505         case ZFS_DELEG_NOTE_DIFF:
4506                 str = gettext("Allows lookup of paths within a dataset;"
4507                     "\n\t\t\t\tgiven an object number. Ordinary users need this"
4508                     "\n\t\t\t\tin order to use zfs diff");
4509                 break;
4510         case ZFS_DELEG_NOTE_HOLD:
4511                 str = gettext("Allows adding a user hold to a snapshot");
4512                 break;
4513         case ZFS_DELEG_NOTE_MOUNT:
4514                 str = gettext("Allows mount/umount of ZFS datasets");
4515                 break;
4516         case ZFS_DELEG_NOTE_PROMOTE:
4517                 str = gettext("Must also have the 'mount'\n\t\t\t\tand"
4518                     " 'promote' ability in the origin file system");
4519                 break;
4520         case ZFS_DELEG_NOTE_RECEIVE:
4521                 str = gettext("Must also have the 'mount' and 'create'"
4522                     " ability");
4523                 break;
4524         case ZFS_DELEG_NOTE_RELEASE:
4525                 str = gettext("Allows releasing a user hold which\n\t\t\t\t"
4526                     "might destroy the snapshot");
4527                 break;
4528         case ZFS_DELEG_NOTE_RENAME:
4529                 str = gettext("Must also have the 'mount' and 'create'"
4530                     "\n\t\t\t\tability in the new parent");
4531                 break;
4532         case ZFS_DELEG_NOTE_ROLLBACK:
4533                 str = gettext("");
4534                 break;
4535         case ZFS_DELEG_NOTE_SEND:
4536                 str = gettext("");
4537                 break;
4538         case ZFS_DELEG_NOTE_SHARE:
4539                 str = gettext("Allows sharing file systems over NFS or SMB"
4540                     "\n\t\t\t\tprotocols");
4541                 break;
4542         case ZFS_DELEG_NOTE_SNAPSHOT:
4543                 str = gettext("");
4544                 break;
4545 /*
4546  *      case ZFS_DELEG_NOTE_VSCAN:
4547  *              str = gettext("");
4548  *              break;
4549  */
4550                 /* OTHER */
4551         case ZFS_DELEG_NOTE_GROUPQUOTA:
4552                 str = gettext("Allows accessing any groupquota@... property");
4553                 break;
4554         case ZFS_DELEG_NOTE_GROUPUSED:
4555                 str = gettext("Allows reading any groupused@... property");
4556                 break;
4557         case ZFS_DELEG_NOTE_USERPROP:
4558                 str = gettext("Allows changing any user property");
4559                 break;
4560         case ZFS_DELEG_NOTE_USERQUOTA:
4561                 str = gettext("Allows accessing any userquota@... property");
4562                 break;
4563         case ZFS_DELEG_NOTE_USERUSED:
4564                 str = gettext("Allows reading any userused@... property");
4565                 break;
4566                 /* other */
4567         default:
4568                 str = "";
4569         }
4570
4571         return (str);
4572 }
4573
4574 struct allow_opts {
4575         boolean_t local;
4576         boolean_t descend;
4577         boolean_t user;
4578         boolean_t group;
4579         boolean_t everyone;
4580         boolean_t create;
4581         boolean_t set;
4582         boolean_t recursive; /* unallow only */
4583         boolean_t prt_usage;
4584
4585         boolean_t prt_perms;
4586         char *who;
4587         char *perms;
4588         const char *dataset;
4589 };
4590
4591 static inline int
4592 prop_cmp(const void *a, const void *b)
4593 {
4594         const char *str1 = *(const char **)a;
4595         const char *str2 = *(const char **)b;
4596         return (strcmp(str1, str2));
4597 }
4598
4599 static void
4600 allow_usage(boolean_t un, boolean_t requested, const char *msg)
4601 {
4602         const char *opt_desc[] = {
4603                 "-h", gettext("show this help message and exit"),
4604                 "-l", gettext("set permission locally"),
4605                 "-d", gettext("set permission for descents"),
4606                 "-u", gettext("set permission for user"),
4607                 "-g", gettext("set permission for group"),
4608                 "-e", gettext("set permission for everyone"),
4609                 "-c", gettext("set create time permission"),
4610                 "-s", gettext("define permission set"),
4611                 /* unallow only */
4612                 "-r", gettext("remove permissions recursively"),
4613         };
4614         size_t unallow_size = sizeof (opt_desc) / sizeof (char *);
4615         size_t allow_size = unallow_size - 2;
4616         const char *props[ZFS_NUM_PROPS];
4617         int i;
4618         size_t count = 0;
4619         FILE *fp = requested ? stdout : stderr;
4620         zprop_desc_t *pdtbl = zfs_prop_get_table();
4621         const char *fmt = gettext("%-16s %-14s\t%s\n");
4622
4623         (void) fprintf(fp, gettext("Usage: %s\n"), get_usage(un ? HELP_UNALLOW :
4624             HELP_ALLOW));
4625         (void) fprintf(fp, gettext("Options:\n"));
4626         for (i = 0; i < (un ? unallow_size : allow_size); i++) {
4627                 const char *opt = opt_desc[i++];
4628                 const char *optdsc = opt_desc[i];
4629                 (void) fprintf(fp, gettext("  %-10s  %s\n"), opt, optdsc);
4630         }
4631
4632         (void) fprintf(fp, gettext("\nThe following permissions are "
4633             "supported:\n\n"));
4634         (void) fprintf(fp, fmt, gettext("NAME"), gettext("TYPE"),
4635             gettext("NOTES"));
4636         for (i = 0; i < ZFS_NUM_DELEG_NOTES; i++) {
4637                 const char *perm_name = zfs_deleg_perm_tbl[i].z_perm;
4638                 zfs_deleg_note_t perm_note = zfs_deleg_perm_tbl[i].z_note;
4639                 const char *perm_type = deleg_perm_type(perm_note);
4640                 const char *perm_comment = deleg_perm_comment(perm_note);
4641                 (void) fprintf(fp, fmt, perm_name, perm_type, perm_comment);
4642         }
4643
4644         for (i = 0; i < ZFS_NUM_PROPS; i++) {
4645                 zprop_desc_t *pd = &pdtbl[i];
4646                 if (pd->pd_visible != B_TRUE)
4647                         continue;
4648
4649                 if (pd->pd_attr == PROP_READONLY)
4650                         continue;
4651
4652                 props[count++] = pd->pd_name;
4653         }
4654         props[count] = NULL;
4655
4656         qsort(props, count, sizeof (char *), prop_cmp);
4657
4658         for (i = 0; i < count; i++)
4659                 (void) fprintf(fp, fmt, props[i], gettext("property"), "");
4660
4661         if (msg != NULL)
4662                 (void) fprintf(fp, gettext("\nzfs: error: %s"), msg);
4663
4664         exit(requested ? 0 : 2);
4665 }
4666
4667 static inline const char *
4668 munge_args(int argc, char **argv, boolean_t un, size_t expected_argc,
4669     char **permsp)
4670 {
4671         if (un && argc == expected_argc - 1)
4672                 *permsp = NULL;
4673         else if (argc == expected_argc)
4674                 *permsp = argv[argc - 2];
4675         else
4676                 allow_usage(un, B_FALSE,
4677                     gettext("wrong number of parameters\n"));
4678
4679         return (argv[argc - 1]);
4680 }
4681
4682 static void
4683 parse_allow_args(int argc, char **argv, boolean_t un, struct allow_opts *opts)
4684 {
4685         int uge_sum = opts->user + opts->group + opts->everyone;
4686         int csuge_sum = opts->create + opts->set + uge_sum;
4687         int ldcsuge_sum = csuge_sum + opts->local + opts->descend;
4688         int all_sum = un ? ldcsuge_sum + opts->recursive : ldcsuge_sum;
4689
4690         if (uge_sum > 1)
4691                 allow_usage(un, B_FALSE,
4692                     gettext("-u, -g, and -e are mutually exclusive\n"));
4693
4694         if (opts->prt_usage) {
4695                 if (argc == 0 && all_sum == 0)
4696                         allow_usage(un, B_TRUE, NULL);
4697                 else
4698                         usage(B_FALSE);
4699         }
4700
4701         if (opts->set) {
4702                 if (csuge_sum > 1)
4703                         allow_usage(un, B_FALSE,
4704                             gettext("invalid options combined with -s\n"));
4705
4706                 opts->dataset = munge_args(argc, argv, un, 3, &opts->perms);
4707                 if (argv[0][0] != '@')
4708                         allow_usage(un, B_FALSE,
4709                             gettext("invalid set name: missing '@' prefix\n"));
4710                 opts->who = argv[0];
4711         } else if (opts->create) {
4712                 if (ldcsuge_sum > 1)
4713                         allow_usage(un, B_FALSE,
4714                             gettext("invalid options combined with -c\n"));
4715                 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
4716         } else if (opts->everyone) {
4717                 if (csuge_sum > 1)
4718                         allow_usage(un, B_FALSE,
4719                             gettext("invalid options combined with -e\n"));
4720                 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
4721         } else if (uge_sum == 0 && argc > 0 && strcmp(argv[0], "everyone")
4722             == 0) {
4723                 opts->everyone = B_TRUE;
4724                 argc--;
4725                 argv++;
4726                 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
4727         } else if (argc == 1 && !un) {
4728                 opts->prt_perms = B_TRUE;
4729                 opts->dataset = argv[argc-1];
4730         } else {
4731                 opts->dataset = munge_args(argc, argv, un, 3, &opts->perms);
4732                 opts->who = argv[0];
4733         }
4734
4735         if (!opts->local && !opts->descend) {
4736                 opts->local = B_TRUE;
4737                 opts->descend = B_TRUE;
4738         }
4739 }
4740
4741 static void
4742 store_allow_perm(zfs_deleg_who_type_t type, boolean_t local, boolean_t descend,
4743     const char *who, char *perms, nvlist_t *top_nvl)
4744 {
4745         int i;
4746         char ld[2] = { '\0', '\0' };
4747         char who_buf[ZFS_MAXNAMELEN+32];
4748         char base_type = ZFS_DELEG_WHO_UNKNOWN;
4749         char set_type = ZFS_DELEG_WHO_UNKNOWN;
4750         nvlist_t *base_nvl = NULL;
4751         nvlist_t *set_nvl = NULL;
4752         nvlist_t *nvl;
4753
4754         if (nvlist_alloc(&base_nvl, NV_UNIQUE_NAME, 0) != 0)
4755                 nomem();
4756         if (nvlist_alloc(&set_nvl, NV_UNIQUE_NAME, 0) !=  0)
4757                 nomem();
4758
4759         switch (type) {
4760         case ZFS_DELEG_NAMED_SET_SETS:
4761         case ZFS_DELEG_NAMED_SET:
4762                 set_type = ZFS_DELEG_NAMED_SET_SETS;
4763                 base_type = ZFS_DELEG_NAMED_SET;
4764                 ld[0] = ZFS_DELEG_NA;
4765                 break;
4766         case ZFS_DELEG_CREATE_SETS:
4767         case ZFS_DELEG_CREATE:
4768                 set_type = ZFS_DELEG_CREATE_SETS;
4769                 base_type = ZFS_DELEG_CREATE;
4770                 ld[0] = ZFS_DELEG_NA;
4771                 break;
4772         case ZFS_DELEG_USER_SETS:
4773         case ZFS_DELEG_USER:
4774                 set_type = ZFS_DELEG_USER_SETS;
4775                 base_type = ZFS_DELEG_USER;
4776                 if (local)
4777                         ld[0] = ZFS_DELEG_LOCAL;
4778                 if (descend)
4779                         ld[1] = ZFS_DELEG_DESCENDENT;
4780                 break;
4781         case ZFS_DELEG_GROUP_SETS:
4782         case ZFS_DELEG_GROUP:
4783                 set_type = ZFS_DELEG_GROUP_SETS;
4784                 base_type = ZFS_DELEG_GROUP;
4785                 if (local)
4786                         ld[0] = ZFS_DELEG_LOCAL;
4787                 if (descend)
4788                         ld[1] = ZFS_DELEG_DESCENDENT;
4789                 break;
4790         case ZFS_DELEG_EVERYONE_SETS:
4791         case ZFS_DELEG_EVERYONE:
4792                 set_type = ZFS_DELEG_EVERYONE_SETS;
4793                 base_type = ZFS_DELEG_EVERYONE;
4794                 if (local)
4795                         ld[0] = ZFS_DELEG_LOCAL;
4796                 if (descend)
4797                         ld[1] = ZFS_DELEG_DESCENDENT;
4798         default:
4799                 break;
4800         }
4801
4802         if (perms != NULL) {
4803                 char *curr = perms;
4804                 char *end = curr + strlen(perms);
4805
4806                 while (curr < end) {
4807                         char *delim = strchr(curr, ',');
4808                         if (delim == NULL)
4809                                 delim = end;
4810                         else
4811                                 *delim = '\0';
4812
4813                         if (curr[0] == '@')
4814                                 nvl = set_nvl;
4815                         else
4816                                 nvl = base_nvl;
4817
4818                         (void) nvlist_add_boolean(nvl, curr);
4819                         if (delim != end)
4820                                 *delim = ',';
4821                         curr = delim + 1;
4822                 }
4823
4824                 for (i = 0; i < 2; i++) {
4825                         char locality = ld[i];
4826                         if (locality == 0)
4827                                 continue;
4828
4829                         if (!nvlist_empty(base_nvl)) {
4830                                 if (who != NULL)
4831                                         (void) snprintf(who_buf,
4832                                             sizeof (who_buf), "%c%c$%s",
4833                                             base_type, locality, who);
4834                                 else
4835                                         (void) snprintf(who_buf,
4836                                             sizeof (who_buf), "%c%c$",
4837                                             base_type, locality);
4838
4839                                 (void) nvlist_add_nvlist(top_nvl, who_buf,
4840                                     base_nvl);
4841                         }
4842
4843
4844                         if (!nvlist_empty(set_nvl)) {
4845                                 if (who != NULL)
4846                                         (void) snprintf(who_buf,
4847                                             sizeof (who_buf), "%c%c$%s",
4848                                             set_type, locality, who);
4849                                 else
4850                                         (void) snprintf(who_buf,
4851                                             sizeof (who_buf), "%c%c$",
4852                                             set_type, locality);
4853
4854                                 (void) nvlist_add_nvlist(top_nvl, who_buf,
4855                                     set_nvl);
4856                         }
4857                 }
4858         } else {
4859                 for (i = 0; i < 2; i++) {
4860                         char locality = ld[i];
4861                         if (locality == 0)
4862                                 continue;
4863
4864                         if (who != NULL)
4865                                 (void) snprintf(who_buf, sizeof (who_buf),
4866                                     "%c%c$%s", base_type, locality, who);
4867                         else
4868                                 (void) snprintf(who_buf, sizeof (who_buf),
4869                                     "%c%c$", base_type, locality);
4870                         (void) nvlist_add_boolean(top_nvl, who_buf);
4871
4872                         if (who != NULL)
4873                                 (void) snprintf(who_buf, sizeof (who_buf),
4874                                     "%c%c$%s", set_type, locality, who);
4875                         else
4876                                 (void) snprintf(who_buf, sizeof (who_buf),
4877                                     "%c%c$", set_type, locality);
4878                         (void) nvlist_add_boolean(top_nvl, who_buf);
4879                 }
4880         }
4881 }
4882
4883 static int
4884 construct_fsacl_list(boolean_t un, struct allow_opts *opts, nvlist_t **nvlp)
4885 {
4886         if (nvlist_alloc(nvlp, NV_UNIQUE_NAME, 0) != 0)
4887                 nomem();
4888
4889         if (opts->set) {
4890                 store_allow_perm(ZFS_DELEG_NAMED_SET, opts->local,
4891                     opts->descend, opts->who, opts->perms, *nvlp);
4892         } else if (opts->create) {
4893                 store_allow_perm(ZFS_DELEG_CREATE, opts->local,
4894                     opts->descend, NULL, opts->perms, *nvlp);
4895         } else if (opts->everyone) {
4896                 store_allow_perm(ZFS_DELEG_EVERYONE, opts->local,
4897                     opts->descend, NULL, opts->perms, *nvlp);
4898         } else {
4899                 char *curr = opts->who;
4900                 char *end = curr + strlen(curr);
4901
4902                 while (curr < end) {
4903                         const char *who;
4904                         zfs_deleg_who_type_t who_type = ZFS_DELEG_WHO_UNKNOWN;
4905                         char *endch;
4906                         char *delim = strchr(curr, ',');
4907                         char errbuf[256];
4908                         char id[64];
4909                         struct passwd *p = NULL;
4910                         struct group *g = NULL;
4911
4912                         uid_t rid;
4913                         if (delim == NULL)
4914                                 delim = end;
4915                         else
4916                                 *delim = '\0';
4917
4918                         rid = (uid_t)strtol(curr, &endch, 0);
4919                         if (opts->user) {
4920                                 who_type = ZFS_DELEG_USER;
4921                                 if (*endch != '\0')
4922                                         p = getpwnam(curr);
4923                                 else
4924                                         p = getpwuid(rid);
4925
4926                                 if (p != NULL)
4927                                         rid = p->pw_uid;
4928                                 else {
4929                                         (void) snprintf(errbuf, 256, gettext(
4930                                             "invalid user %s"), curr);
4931                                         allow_usage(un, B_TRUE, errbuf);
4932                                 }
4933                         } else if (opts->group) {
4934                                 who_type = ZFS_DELEG_GROUP;
4935                                 if (*endch != '\0')
4936                                         g = getgrnam(curr);
4937                                 else
4938                                         g = getgrgid(rid);
4939
4940                                 if (g != NULL)
4941                                         rid = g->gr_gid;
4942                                 else {
4943                                         (void) snprintf(errbuf, 256, gettext(
4944                                             "invalid group %s"),  curr);
4945                                         allow_usage(un, B_TRUE, errbuf);
4946                                 }
4947                         } else {
4948                                 if (*endch != '\0') {
4949                                         p = getpwnam(curr);
4950                                 } else {
4951                                         p = getpwuid(rid);
4952                                 }
4953
4954                                 if (p == NULL) {
4955                                         if (*endch != '\0') {
4956                                                 g = getgrnam(curr);
4957                                         } else {
4958                                                 g = getgrgid(rid);
4959                                         }
4960                                 }
4961
4962                                 if (p != NULL) {
4963                                         who_type = ZFS_DELEG_USER;
4964                                         rid = p->pw_uid;
4965                                 } else if (g != NULL) {
4966                                         who_type = ZFS_DELEG_GROUP;
4967                                         rid = g->gr_gid;
4968                                 } else {
4969                                         (void) snprintf(errbuf, 256, gettext(
4970                                             "invalid user/group %s"), curr);
4971                                         allow_usage(un, B_TRUE, errbuf);
4972                                 }
4973                         }
4974
4975                         (void) sprintf(id, "%u", rid);
4976                         who = id;
4977
4978                         store_allow_perm(who_type, opts->local,
4979                             opts->descend, who, opts->perms, *nvlp);
4980                         curr = delim + 1;
4981                 }
4982         }
4983
4984         return (0);
4985 }
4986
4987 static void
4988 print_set_creat_perms(uu_avl_t *who_avl)
4989 {
4990         const char *sc_title[] = {
4991                 gettext("Permission sets:\n"),
4992                 gettext("Create time permissions:\n"),
4993                 NULL
4994         };
4995         const char **title_ptr = sc_title;
4996         who_perm_node_t *who_node = NULL;
4997         int prev_weight = -1;
4998
4999         for (who_node = uu_avl_first(who_avl); who_node != NULL;
5000             who_node = uu_avl_next(who_avl, who_node)) {
5001                 uu_avl_t *avl = who_node->who_perm.who_deleg_perm_avl;
5002                 zfs_deleg_who_type_t who_type = who_node->who_perm.who_type;
5003                 const char *who_name = who_node->who_perm.who_name;
5004                 int weight = who_type2weight(who_type);
5005                 boolean_t first = B_TRUE;
5006                 deleg_perm_node_t *deleg_node;
5007
5008                 if (prev_weight != weight) {
5009                         (void) printf("%s", *title_ptr++);
5010                         prev_weight = weight;
5011                 }
5012
5013                 if (who_name == NULL || strnlen(who_name, 1) == 0)
5014                         (void) printf("\t");
5015                 else
5016                         (void) printf("\t%s ", who_name);
5017
5018                 for (deleg_node = uu_avl_first(avl); deleg_node != NULL;
5019                     deleg_node = uu_avl_next(avl, deleg_node)) {
5020                         if (first) {
5021                                 (void) printf("%s",
5022                                     deleg_node->dpn_perm.dp_name);
5023                                 first = B_FALSE;
5024                         } else
5025                                 (void) printf(",%s",
5026                                     deleg_node->dpn_perm.dp_name);
5027                 }
5028
5029                 (void) printf("\n");
5030         }
5031 }
5032
5033 static void inline
5034 print_uge_deleg_perms(uu_avl_t *who_avl, boolean_t local, boolean_t descend,
5035     const char *title)
5036 {
5037         who_perm_node_t *who_node = NULL;
5038         boolean_t prt_title = B_TRUE;
5039         uu_avl_walk_t *walk;
5040
5041         if ((walk = uu_avl_walk_start(who_avl, UU_WALK_ROBUST)) == NULL)
5042                 nomem();
5043
5044         while ((who_node = uu_avl_walk_next(walk)) != NULL) {
5045                 const char *who_name = who_node->who_perm.who_name;
5046                 const char *nice_who_name = who_node->who_perm.who_ug_name;
5047                 uu_avl_t *avl = who_node->who_perm.who_deleg_perm_avl;
5048                 zfs_deleg_who_type_t who_type = who_node->who_perm.who_type;
5049                 char delim = ' ';
5050                 deleg_perm_node_t *deleg_node;
5051                 boolean_t prt_who = B_TRUE;
5052
5053                 for (deleg_node = uu_avl_first(avl);
5054                     deleg_node != NULL;
5055                     deleg_node = uu_avl_next(avl, deleg_node)) {
5056                         if (local != deleg_node->dpn_perm.dp_local ||
5057                             descend != deleg_node->dpn_perm.dp_descend)
5058                                 continue;
5059
5060                         if (prt_who) {
5061                                 const char *who = NULL;
5062                                 if (prt_title) {
5063                                         prt_title = B_FALSE;
5064                                         (void) printf("%s", title);
5065                                 }
5066
5067                                 switch (who_type) {
5068                                 case ZFS_DELEG_USER_SETS:
5069                                 case ZFS_DELEG_USER:
5070                                         who = gettext("user");
5071                                         if (nice_who_name)
5072                                                 who_name  = nice_who_name;
5073                                         break;
5074                                 case ZFS_DELEG_GROUP_SETS:
5075                                 case ZFS_DELEG_GROUP:
5076                                         who = gettext("group");
5077                                         if (nice_who_name)
5078                                                 who_name  = nice_who_name;
5079                                         break;
5080                                 case ZFS_DELEG_EVERYONE_SETS:
5081                                 case ZFS_DELEG_EVERYONE:
5082                                         who = gettext("everyone");
5083                                         who_name = NULL;
5084                                 default:
5085                                         break;
5086                                 }
5087
5088                                 prt_who = B_FALSE;
5089                                 if (who_name == NULL)
5090                                         (void) printf("\t%s", who);
5091                                 else
5092                                         (void) printf("\t%s %s", who, who_name);
5093                         }
5094
5095                         (void) printf("%c%s", delim,
5096                             deleg_node->dpn_perm.dp_name);
5097                         delim = ',';
5098                 }
5099
5100                 if (!prt_who)
5101                         (void) printf("\n");
5102         }
5103
5104         uu_avl_walk_end(walk);
5105 }
5106
5107 static void
5108 print_fs_perms(fs_perm_set_t *fspset)
5109 {
5110         fs_perm_node_t *node = NULL;
5111         char buf[ZFS_MAXNAMELEN+32];
5112         const char *dsname = buf;
5113
5114         for (node = uu_list_first(fspset->fsps_list); node != NULL;
5115             node = uu_list_next(fspset->fsps_list, node)) {
5116                 uu_avl_t *sc_avl = node->fspn_fsperm.fsp_sc_avl;
5117                 uu_avl_t *uge_avl = node->fspn_fsperm.fsp_uge_avl;
5118                 int left = 0;
5119
5120                 (void) snprintf(buf, ZFS_MAXNAMELEN+32,
5121                     gettext("---- Permissions on %s "),
5122                     node->fspn_fsperm.fsp_name);
5123                 (void) printf("%s", dsname);
5124                 left = 70 - strlen(buf);
5125                 while (left-- > 0)
5126                         (void) printf("-");
5127                 (void) printf("\n");
5128
5129                 print_set_creat_perms(sc_avl);
5130                 print_uge_deleg_perms(uge_avl, B_TRUE, B_FALSE,
5131                     gettext("Local permissions:\n"));
5132                 print_uge_deleg_perms(uge_avl, B_FALSE, B_TRUE,
5133                     gettext("Descendent permissions:\n"));
5134                 print_uge_deleg_perms(uge_avl, B_TRUE, B_TRUE,
5135                     gettext("Local+Descendent permissions:\n"));
5136         }
5137 }
5138
5139 static fs_perm_set_t fs_perm_set = { NULL, NULL, NULL, NULL };
5140
5141 struct deleg_perms {
5142         boolean_t un;
5143         nvlist_t *nvl;
5144 };
5145
5146 static int
5147 set_deleg_perms(zfs_handle_t *zhp, void *data)
5148 {
5149         struct deleg_perms *perms = (struct deleg_perms *)data;
5150         zfs_type_t zfs_type = zfs_get_type(zhp);
5151
5152         if (zfs_type != ZFS_TYPE_FILESYSTEM && zfs_type != ZFS_TYPE_VOLUME)
5153                 return (0);
5154
5155         return (zfs_set_fsacl(zhp, perms->un, perms->nvl));
5156 }
5157
5158 static int
5159 zfs_do_allow_unallow_impl(int argc, char **argv, boolean_t un)
5160 {
5161         zfs_handle_t *zhp;
5162         nvlist_t *perm_nvl = NULL;
5163         nvlist_t *update_perm_nvl = NULL;
5164         int error = 1;
5165         int c;
5166         struct allow_opts opts = { 0 };
5167
5168         const char *optstr = un ? "ldugecsrh" : "ldugecsh";
5169
5170         /* check opts */
5171         while ((c = getopt(argc, argv, optstr)) != -1) {
5172                 switch (c) {
5173                 case 'l':
5174                         opts.local = B_TRUE;
5175                         break;
5176                 case 'd':
5177                         opts.descend = B_TRUE;
5178                         break;
5179                 case 'u':
5180                         opts.user = B_TRUE;
5181                         break;
5182                 case 'g':
5183                         opts.group = B_TRUE;
5184                         break;
5185                 case 'e':
5186                         opts.everyone = B_TRUE;
5187                         break;
5188                 case 's':
5189                         opts.set = B_TRUE;
5190                         break;
5191                 case 'c':
5192                         opts.create = B_TRUE;
5193                         break;
5194                 case 'r':
5195                         opts.recursive = B_TRUE;
5196                         break;
5197                 case ':':
5198                         (void) fprintf(stderr, gettext("missing argument for "
5199                             "'%c' option\n"), optopt);
5200                         usage(B_FALSE);
5201                         break;
5202                 case 'h':
5203                         opts.prt_usage = B_TRUE;
5204                         break;
5205                 case '?':
5206                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5207                             optopt);
5208                         usage(B_FALSE);
5209                 }
5210         }
5211
5212         argc -= optind;
5213         argv += optind;
5214
5215         /* check arguments */
5216         parse_allow_args(argc, argv, un, &opts);
5217
5218         /* try to open the dataset */
5219         if ((zhp = zfs_open(g_zfs, opts.dataset, ZFS_TYPE_FILESYSTEM |
5220             ZFS_TYPE_VOLUME)) == NULL) {
5221                 (void) fprintf(stderr, "Failed to open dataset: %s\n",
5222                     opts.dataset);
5223                 return (-1);
5224         }
5225
5226         if (zfs_get_fsacl(zhp, &perm_nvl) != 0)
5227                 goto cleanup2;
5228
5229         fs_perm_set_init(&fs_perm_set);
5230         if (parse_fs_perm_set(&fs_perm_set, perm_nvl) != 0) {
5231                 (void) fprintf(stderr, "Failed to parse fsacl permissions\n");
5232                 goto cleanup1;
5233         }
5234
5235         if (opts.prt_perms)
5236                 print_fs_perms(&fs_perm_set);
5237         else {
5238                 (void) construct_fsacl_list(un, &opts, &update_perm_nvl);
5239                 if (zfs_set_fsacl(zhp, un, update_perm_nvl) != 0)
5240                         goto cleanup0;
5241
5242                 if (un && opts.recursive) {
5243                         struct deleg_perms data = { un, update_perm_nvl };
5244                         if (zfs_iter_filesystems(zhp, set_deleg_perms,
5245                             &data) != 0)
5246                                 goto cleanup0;
5247                 }
5248         }
5249
5250         error = 0;
5251
5252 cleanup0:
5253         nvlist_free(perm_nvl);
5254         if (update_perm_nvl != NULL)
5255                 nvlist_free(update_perm_nvl);
5256 cleanup1:
5257         fs_perm_set_fini(&fs_perm_set);
5258 cleanup2:
5259         zfs_close(zhp);
5260
5261         return (error);
5262 }
5263
5264 static int
5265 zfs_do_allow(int argc, char **argv)
5266 {
5267         return (zfs_do_allow_unallow_impl(argc, argv, B_FALSE));
5268 }
5269
5270 static int
5271 zfs_do_unallow(int argc, char **argv)
5272 {
5273         return (zfs_do_allow_unallow_impl(argc, argv, B_TRUE));
5274 }
5275
5276 static int
5277 zfs_do_hold_rele_impl(int argc, char **argv, boolean_t holding)
5278 {
5279         int errors = 0;
5280         int i;
5281         const char *tag;
5282         boolean_t recursive = B_FALSE;
5283         const char *opts = holding ? "rt" : "r";
5284         int c;
5285
5286         /* check options */
5287         while ((c = getopt(argc, argv, opts)) != -1) {
5288                 switch (c) {
5289                 case 'r':
5290                         recursive = B_TRUE;
5291                         break;
5292                 case '?':
5293                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5294                             optopt);
5295                         usage(B_FALSE);
5296                 }
5297         }
5298
5299         argc -= optind;
5300         argv += optind;
5301
5302         /* check number of arguments */
5303         if (argc < 2)
5304                 usage(B_FALSE);
5305
5306         tag = argv[0];
5307         --argc;
5308         ++argv;
5309
5310         if (holding && tag[0] == '.') {
5311                 /* tags starting with '.' are reserved for libzfs */
5312                 (void) fprintf(stderr, gettext("tag may not start with '.'\n"));
5313                 usage(B_FALSE);
5314         }
5315
5316         for (i = 0; i < argc; ++i) {
5317                 zfs_handle_t *zhp;
5318                 char parent[ZFS_MAXNAMELEN];
5319                 const char *delim;
5320                 char *path = argv[i];
5321
5322                 delim = strchr(path, '@');
5323                 if (delim == NULL) {
5324                         (void) fprintf(stderr,
5325                             gettext("'%s' is not a snapshot\n"), path);
5326                         ++errors;
5327                         continue;
5328                 }
5329                 (void) strncpy(parent, path, delim - path);
5330                 parent[delim - path] = '\0';
5331
5332                 zhp = zfs_open(g_zfs, parent,
5333                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
5334                 if (zhp == NULL) {
5335                         ++errors;
5336                         continue;
5337                 }
5338                 if (holding) {
5339                         if (zfs_hold(zhp, delim+1, tag, recursive, -1) != 0)
5340                                 ++errors;
5341                 } else {
5342                         if (zfs_release(zhp, delim+1, tag, recursive) != 0)
5343                                 ++errors;
5344                 }
5345                 zfs_close(zhp);
5346         }
5347
5348         return (errors != 0);
5349 }
5350
5351 /*
5352  * zfs hold [-r] [-t] <tag> <snap> ...
5353  *
5354  *      -r      Recursively hold
5355  *
5356  * Apply a user-hold with the given tag to the list of snapshots.
5357  */
5358 static int
5359 zfs_do_hold(int argc, char **argv)
5360 {
5361         return (zfs_do_hold_rele_impl(argc, argv, B_TRUE));
5362 }
5363
5364 /*
5365  * zfs release [-r] <tag> <snap> ...
5366  *
5367  *      -r      Recursively release
5368  *
5369  * Release a user-hold with the given tag from the list of snapshots.
5370  */
5371 static int
5372 zfs_do_release(int argc, char **argv)
5373 {
5374         return (zfs_do_hold_rele_impl(argc, argv, B_FALSE));
5375 }
5376
5377 typedef struct holds_cbdata {
5378         boolean_t       cb_recursive;
5379         const char      *cb_snapname;
5380         nvlist_t        **cb_nvlp;
5381         size_t          cb_max_namelen;
5382         size_t          cb_max_taglen;
5383 } holds_cbdata_t;
5384
5385 #define STRFTIME_FMT_STR "%a %b %e %k:%M %Y"
5386 #define DATETIME_BUF_LEN (32)
5387 /*
5388  *
5389  */
5390 static void
5391 print_holds(boolean_t scripted, int nwidth, int tagwidth, nvlist_t *nvl)
5392 {
5393         int i;
5394         nvpair_t *nvp = NULL;
5395         char *hdr_cols[] = { "NAME", "TAG", "TIMESTAMP" };
5396         const char *col;
5397
5398         if (!scripted) {
5399                 for (i = 0; i < 3; i++) {
5400                         col = gettext(hdr_cols[i]);
5401                         if (i < 2)
5402                                 (void) printf("%-*s  ", i ? tagwidth : nwidth,
5403                                     col);
5404                         else
5405                                 (void) printf("%s\n", col);
5406                 }
5407         }
5408
5409         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
5410                 char *zname = nvpair_name(nvp);
5411                 nvlist_t *nvl2;
5412                 nvpair_t *nvp2 = NULL;
5413                 (void) nvpair_value_nvlist(nvp, &nvl2);
5414                 while ((nvp2 = nvlist_next_nvpair(nvl2, nvp2)) != NULL) {
5415                         char tsbuf[DATETIME_BUF_LEN];
5416                         char *tagname = nvpair_name(nvp2);
5417                         uint64_t val = 0;
5418                         time_t time;
5419                         struct tm t;
5420                         char sep = scripted ? '\t' : ' ';
5421                         int sepnum = scripted ? 1 : 2;
5422
5423                         (void) nvpair_value_uint64(nvp2, &val);
5424                         time = (time_t)val;
5425                         (void) localtime_r(&time, &t);
5426                         (void) strftime(tsbuf, DATETIME_BUF_LEN,
5427                             gettext(STRFTIME_FMT_STR), &t);
5428
5429                         (void) printf("%-*s%*c%-*s%*c%s\n", nwidth, zname,
5430                             sepnum, sep, tagwidth, tagname, sepnum, sep, tsbuf);
5431                 }
5432         }
5433 }
5434
5435 /*
5436  * Generic callback function to list a dataset or snapshot.
5437  */
5438 static int
5439 holds_callback(zfs_handle_t *zhp, void *data)
5440 {
5441         holds_cbdata_t *cbp = data;
5442         nvlist_t *top_nvl = *cbp->cb_nvlp;
5443         nvlist_t *nvl = NULL;
5444         nvpair_t *nvp = NULL;
5445         const char *zname = zfs_get_name(zhp);
5446         size_t znamelen = strnlen(zname, ZFS_MAXNAMELEN);
5447
5448         if (cbp->cb_recursive) {
5449                 const char *snapname;
5450                 char *delim  = strchr(zname, '@');
5451                 if (delim == NULL)
5452                         return (0);
5453
5454                 snapname = delim + 1;
5455                 if (strcmp(cbp->cb_snapname, snapname))
5456                         return (0);
5457         }
5458
5459         if (zfs_get_holds(zhp, &nvl) != 0)
5460                 return (-1);
5461
5462         if (znamelen > cbp->cb_max_namelen)
5463                 cbp->cb_max_namelen  = znamelen;
5464
5465         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
5466                 const char *tag = nvpair_name(nvp);
5467                 size_t taglen = strnlen(tag, MAXNAMELEN);
5468                 if (taglen > cbp->cb_max_taglen)
5469                         cbp->cb_max_taglen  = taglen;
5470         }
5471
5472         return (nvlist_add_nvlist(top_nvl, zname, nvl));
5473 }
5474
5475 /*
5476  * zfs holds [-r] <snap> ...
5477  *
5478  *      -r      Recursively hold
5479  */
5480 static int
5481 zfs_do_holds(int argc, char **argv)
5482 {
5483         int errors = 0;
5484         int c;
5485         int i;
5486         boolean_t scripted = B_FALSE;
5487         boolean_t recursive = B_FALSE;
5488         const char *opts = "rH";
5489         nvlist_t *nvl;
5490
5491         int types = ZFS_TYPE_SNAPSHOT;
5492         holds_cbdata_t cb = { 0 };
5493
5494         int limit = 0;
5495         int ret = 0;
5496         int flags = 0;
5497
5498         /* check options */
5499         while ((c = getopt(argc, argv, opts)) != -1) {
5500                 switch (c) {
5501                 case 'r':
5502                         recursive = B_TRUE;
5503                         break;
5504                 case 'H':
5505                         scripted = B_TRUE;
5506                         break;
5507                 case '?':
5508                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5509                             optopt);
5510                         usage(B_FALSE);
5511                 }
5512         }
5513
5514         if (recursive) {
5515                 types |= ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME;
5516                 flags |= ZFS_ITER_RECURSE;
5517         }
5518
5519         argc -= optind;
5520         argv += optind;
5521
5522         /* check number of arguments */
5523         if (argc < 1)
5524                 usage(B_FALSE);
5525
5526         if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0)
5527                 nomem();
5528
5529         for (i = 0; i < argc; ++i) {
5530                 char *snapshot = argv[i];
5531                 const char *delim;
5532                 const char *snapname;
5533
5534                 delim = strchr(snapshot, '@');
5535                 if (delim == NULL) {
5536                         (void) fprintf(stderr,
5537                             gettext("'%s' is not a snapshot\n"), snapshot);
5538                         ++errors;
5539                         continue;
5540                 }
5541                 snapname = delim + 1;
5542                 if (recursive)
5543                         snapshot[delim - snapshot] = '\0';
5544
5545                 cb.cb_recursive = recursive;
5546                 cb.cb_snapname = snapname;
5547                 cb.cb_nvlp = &nvl;
5548
5549                 /*
5550                  *  1. collect holds data, set format options
5551                  */
5552                 ret = zfs_for_each(argc, argv, flags, types, NULL, NULL, limit,
5553                     holds_callback, &cb);
5554                 if (ret != 0)
5555                         ++errors;
5556         }
5557
5558         /*
5559          *  2. print holds data
5560          */
5561         print_holds(scripted, cb.cb_max_namelen, cb.cb_max_taglen, nvl);
5562
5563         if (nvlist_empty(nvl))
5564                 (void) fprintf(stderr, gettext("no datasets available\n"));
5565
5566         nvlist_free(nvl);
5567
5568         return (0 != errors);
5569 }
5570
5571 #define CHECK_SPINNER 30
5572 #define SPINNER_TIME 3          /* seconds */
5573 #define MOUNT_TIME 5            /* seconds */
5574
5575 static int
5576 get_one_dataset(zfs_handle_t *zhp, void *data)
5577 {
5578         static char *spin[] = { "-", "\\", "|", "/" };
5579         static int spinval = 0;
5580         static int spincheck = 0;
5581         static time_t last_spin_time = (time_t)0;
5582         get_all_cb_t *cbp = data;
5583         zfs_type_t type = zfs_get_type(zhp);
5584
5585         if (cbp->cb_verbose) {
5586                 if (--spincheck < 0) {
5587                         time_t now = time(NULL);
5588                         if (last_spin_time + SPINNER_TIME < now) {
5589                                 update_progress(spin[spinval++ % 4]);
5590                                 last_spin_time = now;
5591                         }
5592                         spincheck = CHECK_SPINNER;
5593                 }
5594         }
5595
5596         /*
5597          * Iterate over any nested datasets.
5598          */
5599         if (zfs_iter_filesystems(zhp, get_one_dataset, data) != 0) {
5600                 zfs_close(zhp);
5601                 return (1);
5602         }
5603
5604         /*
5605          * Skip any datasets whose type does not match.
5606          */
5607         if ((type & ZFS_TYPE_FILESYSTEM) == 0) {
5608                 zfs_close(zhp);
5609                 return (0);
5610         }
5611         libzfs_add_handle(cbp, zhp);
5612         assert(cbp->cb_used <= cbp->cb_alloc);
5613
5614         return (0);
5615 }
5616
5617 static void
5618 get_all_datasets(zfs_handle_t ***dslist, size_t *count, boolean_t verbose)
5619 {
5620         get_all_cb_t cb = { 0 };
5621         cb.cb_verbose = verbose;
5622         cb.cb_getone = get_one_dataset;
5623
5624         if (verbose)
5625                 set_progress_header(gettext("Reading ZFS config"));
5626         (void) zfs_iter_root(g_zfs, get_one_dataset, &cb);
5627
5628         *dslist = cb.cb_handles;
5629         *count = cb.cb_used;
5630
5631         if (verbose)
5632                 finish_progress(gettext("done."));
5633 }
5634
5635 /*
5636  * Generic callback for sharing or mounting filesystems.  Because the code is so
5637  * similar, we have a common function with an extra parameter to determine which
5638  * mode we are using.
5639  */
5640 #define OP_SHARE        0x1
5641 #define OP_MOUNT        0x2
5642
5643 /*
5644  * Share or mount a dataset.
5645  */
5646 static int
5647 share_mount_one(zfs_handle_t *zhp, int op, int flags, char *protocol,
5648     boolean_t explicit, const char *options)
5649 {
5650         char mountpoint[ZFS_MAXPROPLEN];
5651         char shareopts[ZFS_MAXPROPLEN];
5652         char smbshareopts[ZFS_MAXPROPLEN];
5653         const char *cmdname = op == OP_SHARE ? "share" : "mount";
5654         struct mnttab mnt;
5655         uint64_t zoned, canmount;
5656         boolean_t shared_nfs, shared_smb;
5657
5658         assert(zfs_get_type(zhp) & ZFS_TYPE_FILESYSTEM);
5659
5660         /*
5661          * Check to make sure we can mount/share this dataset.  If we
5662          * are in the global zone and the filesystem is exported to a
5663          * local zone, or if we are in a local zone and the
5664          * filesystem is not exported, then it is an error.
5665          */
5666         zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED);
5667
5668         if (zoned && getzoneid() == GLOBAL_ZONEID) {
5669                 if (!explicit)
5670                         return (0);
5671
5672                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5673                     "dataset is exported to a local zone\n"), cmdname,
5674                     zfs_get_name(zhp));
5675                 return (1);
5676
5677         } else if (!zoned && getzoneid() != GLOBAL_ZONEID) {
5678                 if (!explicit)
5679                         return (0);
5680
5681                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5682                     "permission denied\n"), cmdname,
5683                     zfs_get_name(zhp));
5684                 return (1);
5685         }
5686
5687         /*
5688          * Ignore any filesystems which don't apply to us. This
5689          * includes those with a legacy mountpoint, or those with
5690          * legacy share options.
5691          */
5692         verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
5693             sizeof (mountpoint), NULL, NULL, 0, B_FALSE) == 0);
5694         verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, shareopts,
5695             sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0);
5696         verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshareopts,
5697             sizeof (smbshareopts), NULL, NULL, 0, B_FALSE) == 0);
5698
5699         if (op == OP_SHARE && strcmp(shareopts, "off") == 0 &&
5700             strcmp(smbshareopts, "off") == 0) {
5701                 if (!explicit)
5702                         return (0);
5703
5704                 (void) fprintf(stderr, gettext("cannot share '%s': "
5705                     "legacy share\n"), zfs_get_name(zhp));
5706                 (void) fprintf(stderr, gettext("use share(1M) to "
5707                     "share this filesystem, or set "
5708                     "sharenfs property on\n"));
5709                 return (1);
5710         }
5711
5712         /*
5713          * We cannot share or mount legacy filesystems. If the
5714          * shareopts is non-legacy but the mountpoint is legacy, we
5715          * treat it as a legacy share.
5716          */
5717         if (strcmp(mountpoint, "legacy") == 0) {
5718                 if (!explicit)
5719                         return (0);
5720
5721                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5722                     "legacy mountpoint\n"), cmdname, zfs_get_name(zhp));
5723                 (void) fprintf(stderr, gettext("use %s(1M) to "
5724                     "%s this filesystem\n"), cmdname, cmdname);
5725                 return (1);
5726         }
5727
5728         if (strcmp(mountpoint, "none") == 0) {
5729                 if (!explicit)
5730                         return (0);
5731
5732                 (void) fprintf(stderr, gettext("cannot %s '%s': no "
5733                     "mountpoint set\n"), cmdname, zfs_get_name(zhp));
5734                 return (1);
5735         }
5736
5737         /*
5738          * canmount     explicit        outcome
5739          * on           no              pass through
5740          * on           yes             pass through
5741          * off          no              return 0
5742          * off          yes             display error, return 1
5743          * noauto       no              return 0
5744          * noauto       yes             pass through
5745          */
5746         canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT);
5747         if (canmount == ZFS_CANMOUNT_OFF) {
5748                 if (!explicit)
5749                         return (0);
5750
5751                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5752                     "'canmount' property is set to 'off'\n"), cmdname,
5753                     zfs_get_name(zhp));
5754                 return (1);
5755         } else if (canmount == ZFS_CANMOUNT_NOAUTO && !explicit) {
5756                 return (0);
5757         }
5758
5759         /*
5760          * At this point, we have verified that the mountpoint and/or
5761          * shareopts are appropriate for auto management. If the
5762          * filesystem is already mounted or shared, return (failing
5763          * for explicit requests); otherwise mount or share the
5764          * filesystem.
5765          */
5766         switch (op) {
5767         case OP_SHARE:
5768
5769                 shared_nfs = zfs_is_shared_nfs(zhp, NULL);
5770                 shared_smb = zfs_is_shared_smb(zhp, NULL);
5771
5772                 if ((shared_nfs && shared_smb) ||
5773                     ((shared_nfs && strcmp(shareopts, "on") == 0) &&
5774                     (strcmp(smbshareopts, "off") == 0)) ||
5775                     ((shared_smb && strcmp(smbshareopts, "on") == 0) &&
5776                     (strcmp(shareopts, "off") == 0))) {
5777                         if (!explicit)
5778                                 return (0);
5779
5780                         (void) fprintf(stderr, gettext("cannot share "
5781                             "'%s': filesystem already shared\n"),
5782                             zfs_get_name(zhp));
5783                         return (1);
5784                 }
5785
5786                 if (!zfs_is_mounted(zhp, NULL) &&
5787                     zfs_mount(zhp, NULL, 0) != 0)
5788                         return (1);
5789
5790                 if (protocol == NULL) {
5791                         if (zfs_shareall(zhp) != 0)
5792                                 return (1);
5793                 } else if (strcmp(protocol, "nfs") == 0) {
5794                         if (zfs_share_nfs(zhp))
5795                                 return (1);
5796                 } else if (strcmp(protocol, "smb") == 0) {
5797                         if (zfs_share_smb(zhp))
5798                                 return (1);
5799                 } else {
5800                         (void) fprintf(stderr, gettext("cannot share "
5801                             "'%s': invalid share type '%s' "
5802                             "specified\n"),
5803                             zfs_get_name(zhp), protocol);
5804                         return (1);
5805                 }
5806
5807                 break;
5808
5809         case OP_MOUNT:
5810                 if (options == NULL)
5811                         mnt.mnt_mntopts = "";
5812                 else
5813                         mnt.mnt_mntopts = (char *)options;
5814
5815                 if (!hasmntopt(&mnt, MNTOPT_REMOUNT) &&
5816                     zfs_is_mounted(zhp, NULL)) {
5817                         if (!explicit)
5818                                 return (0);
5819
5820                         (void) fprintf(stderr, gettext("cannot mount "
5821                             "'%s': filesystem already mounted\n"),
5822                             zfs_get_name(zhp));
5823                         return (1);
5824                 }
5825
5826                 if (zfs_mount(zhp, options, flags) != 0)
5827                         return (1);
5828                 break;
5829         }
5830
5831         return (0);
5832 }
5833
5834 /*
5835  * Reports progress in the form "(current/total)".  Not thread-safe.
5836  */
5837 static void
5838 report_mount_progress(int current, int total)
5839 {
5840         static time_t last_progress_time = 0;
5841         time_t now = time(NULL);
5842         char info[32];
5843
5844         /* report 1..n instead of 0..n-1 */
5845         ++current;
5846
5847         /* display header if we're here for the first time */
5848         if (current == 1) {
5849                 set_progress_header(gettext("Mounting ZFS filesystems"));
5850         } else if (current != total && last_progress_time + MOUNT_TIME >= now) {
5851                 /* too soon to report again */
5852                 return;
5853         }
5854
5855         last_progress_time = now;
5856
5857         (void) sprintf(info, "(%d/%d)", current, total);
5858
5859         if (current == total)
5860                 finish_progress(info);
5861         else
5862                 update_progress(info);
5863 }
5864
5865 static void
5866 append_options(char *mntopts, char *newopts)
5867 {
5868         int len = strlen(mntopts);
5869
5870         /* original length plus new string to append plus 1 for the comma */
5871         if (len + 1 + strlen(newopts) >= MNT_LINE_MAX) {
5872                 (void) fprintf(stderr, gettext("the opts argument for "
5873                     "'%s' option is too long (more than %d chars)\n"),
5874                     "-o", MNT_LINE_MAX);
5875                 usage(B_FALSE);
5876         }
5877
5878         if (*mntopts)
5879                 mntopts[len++] = ',';
5880
5881         (void) strcpy(&mntopts[len], newopts);
5882 }
5883
5884 static int
5885 share_mount(int op, int argc, char **argv)
5886 {
5887         int do_all = 0;
5888         boolean_t verbose = B_FALSE;
5889         int c, ret = 0;
5890         char *options = NULL;
5891         int flags = 0;
5892
5893         /* check options */
5894         while ((c = getopt(argc, argv, op == OP_MOUNT ? ":avo:O" : "a"))
5895             != -1) {
5896                 switch (c) {
5897                 case 'a':
5898                         do_all = 1;
5899                         break;
5900                 case 'v':
5901                         verbose = B_TRUE;
5902                         break;
5903                 case 'o':
5904                         if (*optarg == '\0') {
5905                                 (void) fprintf(stderr, gettext("empty mount "
5906                                     "options (-o) specified\n"));
5907                                 usage(B_FALSE);
5908                         }
5909
5910                         if (options == NULL)
5911                                 options = safe_malloc(MNT_LINE_MAX + 1);
5912
5913                         /* option validation is done later */
5914                         append_options(options, optarg);
5915                         break;
5916                 case 'O':
5917                         flags |= MS_OVERLAY;
5918                         break;
5919                 case ':':
5920                         (void) fprintf(stderr, gettext("missing argument for "
5921                             "'%c' option\n"), optopt);
5922                         usage(B_FALSE);
5923                         break;
5924                 case '?':
5925                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5926                             optopt);
5927                         usage(B_FALSE);
5928                 }
5929         }
5930
5931         argc -= optind;
5932         argv += optind;
5933
5934         /* check number of arguments */
5935         if (do_all) {
5936                 zfs_handle_t **dslist = NULL;
5937                 size_t i, count = 0;
5938                 char *protocol = NULL;
5939
5940                 if (op == OP_SHARE && argc > 0) {
5941                         if (strcmp(argv[0], "nfs") != 0 &&
5942                             strcmp(argv[0], "smb") != 0) {
5943                                 (void) fprintf(stderr, gettext("share type "
5944                                     "must be 'nfs' or 'smb'\n"));
5945                                 usage(B_FALSE);
5946                         }
5947                         protocol = argv[0];
5948                         argc--;
5949                         argv++;
5950                 }
5951
5952                 if (argc != 0) {
5953                         (void) fprintf(stderr, gettext("too many arguments\n"));
5954                         usage(B_FALSE);
5955                 }
5956
5957                 start_progress_timer();
5958                 get_all_datasets(&dslist, &count, verbose);
5959
5960                 if (count == 0)
5961                         return (0);
5962
5963                 qsort(dslist, count, sizeof (void *), libzfs_dataset_cmp);
5964
5965                 for (i = 0; i < count; i++) {
5966                         if (verbose)
5967                                 report_mount_progress(i, count);
5968
5969                         if (share_mount_one(dslist[i], op, flags, protocol,
5970                             B_FALSE, options) != 0)
5971                                 ret = 1;
5972                         zfs_close(dslist[i]);
5973                 }
5974
5975                 free(dslist);
5976         } else if (argc == 0) {
5977                 struct mnttab entry;
5978
5979                 if ((op == OP_SHARE) || (options != NULL)) {
5980                         (void) fprintf(stderr, gettext("missing filesystem "
5981                             "argument (specify -a for all)\n"));
5982                         usage(B_FALSE);
5983                 }
5984
5985                 /*
5986                  * When mount is given no arguments, go through /etc/mtab and
5987                  * display any active ZFS mounts.  We hide any snapshots, since
5988                  * they are controlled automatically.
5989                  */
5990
5991                 /* Reopen MNTTAB to prevent reading stale data from open file */
5992                 if (freopen(MNTTAB, "r", mnttab_file) == NULL)
5993                         return (ENOENT);
5994
5995                 while (getmntent(mnttab_file, &entry) == 0) {
5996                         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0 ||
5997                             strchr(entry.mnt_special, '@') != NULL)
5998                                 continue;
5999
6000                         (void) printf("%-30s  %s\n", entry.mnt_special,
6001                             entry.mnt_mountp);
6002                 }
6003
6004         } else {
6005                 zfs_handle_t *zhp;
6006
6007                 if (argc > 1) {
6008                         (void) fprintf(stderr,
6009                             gettext("too many arguments\n"));
6010                         usage(B_FALSE);
6011                 }
6012
6013                 if ((zhp = zfs_open(g_zfs, argv[0],
6014                     ZFS_TYPE_FILESYSTEM)) == NULL) {
6015                         ret = 1;
6016                 } else {
6017                         ret = share_mount_one(zhp, op, flags, NULL, B_TRUE,
6018                             options);
6019                         zfs_close(zhp);
6020                 }
6021         }
6022
6023         return (ret);
6024 }
6025
6026 /*
6027  * zfs mount -a [nfs]
6028  * zfs mount filesystem
6029  *
6030  * Mount all filesystems, or mount the given filesystem.
6031  */
6032 static int
6033 zfs_do_mount(int argc, char **argv)
6034 {
6035         return (share_mount(OP_MOUNT, argc, argv));
6036 }
6037
6038 /*
6039  * zfs share -a [nfs | smb]
6040  * zfs share filesystem
6041  *
6042  * Share all filesystems, or share the given filesystem.
6043  */
6044 static int
6045 zfs_do_share(int argc, char **argv)
6046 {
6047         return (share_mount(OP_SHARE, argc, argv));
6048 }
6049
6050 typedef struct unshare_unmount_node {
6051         zfs_handle_t    *un_zhp;
6052         char            *un_mountp;
6053         uu_avl_node_t   un_avlnode;
6054 } unshare_unmount_node_t;
6055
6056 /* ARGSUSED */
6057 static int
6058 unshare_unmount_compare(const void *larg, const void *rarg, void *unused)
6059 {
6060         const unshare_unmount_node_t *l = larg;
6061         const unshare_unmount_node_t *r = rarg;
6062
6063         return (strcmp(l->un_mountp, r->un_mountp));
6064 }
6065
6066 /*
6067  * Convenience routine used by zfs_do_umount() and manual_unmount().  Given an
6068  * absolute path, find the entry /etc/mtab, verify that its a ZFS filesystem,
6069  * and unmount it appropriately.
6070  */
6071 static int
6072 unshare_unmount_path(int op, char *path, int flags, boolean_t is_manual)
6073 {
6074         zfs_handle_t *zhp;
6075         int ret = 0;
6076         struct stat64 statbuf;
6077         struct extmnttab entry;
6078         const char *cmdname = (op == OP_SHARE) ? "unshare" : "unmount";
6079         ino_t path_inode;
6080
6081         /*
6082          * Search for the path in /etc/mtab.  Rather than looking for the
6083          * specific path, which can be fooled by non-standard paths (i.e. ".."
6084          * or "//"), we stat() the path and search for the corresponding
6085          * (major,minor) device pair.
6086          */
6087         if (stat64(path, &statbuf) != 0) {
6088                 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
6089                     cmdname, path, strerror(errno));
6090                 return (1);
6091         }
6092         path_inode = statbuf.st_ino;
6093
6094         /*
6095          * Search for the given (major,minor) pair in the mount table.
6096          */
6097
6098         /* Reopen MNTTAB to prevent reading stale data from open file */
6099         if (freopen(MNTTAB, "r", mnttab_file) == NULL)
6100                 return (ENOENT);
6101
6102         while ((ret = getextmntent(mnttab_file, &entry, 0)) == 0) {
6103                 if (entry.mnt_major == major(statbuf.st_dev) &&
6104                     entry.mnt_minor == minor(statbuf.st_dev))
6105                         break;
6106         }
6107         if (ret != 0) {
6108                 if (op == OP_SHARE) {
6109                         (void) fprintf(stderr, gettext("cannot %s '%s': not "
6110                             "currently mounted\n"), cmdname, path);
6111                         return (1);
6112                 }
6113                 (void) fprintf(stderr, gettext("warning: %s not in mtab\n"),
6114                     path);
6115                 if ((ret = umount2(path, flags)) != 0)
6116                         (void) fprintf(stderr, gettext("%s: %s\n"), path,
6117                             strerror(errno));
6118                 return (ret != 0);
6119         }
6120
6121         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) {
6122                 (void) fprintf(stderr, gettext("cannot %s '%s': not a ZFS "
6123                     "filesystem\n"), cmdname, path);
6124                 return (1);
6125         }
6126
6127         if ((zhp = zfs_open(g_zfs, entry.mnt_special,
6128             ZFS_TYPE_FILESYSTEM)) == NULL)
6129                 return (1);
6130
6131         ret = 1;
6132         if (stat64(entry.mnt_mountp, &statbuf) != 0) {
6133                 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
6134                     cmdname, path, strerror(errno));
6135                 goto out;
6136         } else if (statbuf.st_ino != path_inode) {
6137                 (void) fprintf(stderr, gettext("cannot "
6138                     "%s '%s': not a mountpoint\n"), cmdname, path);
6139                 goto out;
6140         }
6141
6142         if (op == OP_SHARE) {
6143                 char nfs_mnt_prop[ZFS_MAXPROPLEN];
6144                 char smbshare_prop[ZFS_MAXPROPLEN];
6145
6146                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, nfs_mnt_prop,
6147                     sizeof (nfs_mnt_prop), NULL, NULL, 0, B_FALSE) == 0);
6148                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshare_prop,
6149                     sizeof (smbshare_prop), NULL, NULL, 0, B_FALSE) == 0);
6150
6151                 if (strcmp(nfs_mnt_prop, "off") == 0 &&
6152                     strcmp(smbshare_prop, "off") == 0) {
6153                         (void) fprintf(stderr, gettext("cannot unshare "
6154                             "'%s': legacy share\n"), path);
6155                         (void) fprintf(stderr, gettext("use exportfs(8) "
6156                             "or smbcontrol(1) to unshare this filesystem\n"));
6157                 } else if (!zfs_is_shared(zhp)) {
6158                         (void) fprintf(stderr, gettext("cannot unshare '%s': "
6159                             "not currently shared\n"), path);
6160                 } else {
6161                         ret = zfs_unshareall_bypath(zhp, path);
6162                 }
6163         } else {
6164                 char mtpt_prop[ZFS_MAXPROPLEN];
6165
6166                 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mtpt_prop,
6167                     sizeof (mtpt_prop), NULL, NULL, 0, B_FALSE) == 0);
6168
6169                 if (is_manual) {
6170                         ret = zfs_unmount(zhp, NULL, flags);
6171                 } else if (strcmp(mtpt_prop, "legacy") == 0) {
6172                         (void) fprintf(stderr, gettext("cannot unmount "
6173                             "'%s': legacy mountpoint\n"),
6174                             zfs_get_name(zhp));
6175                         (void) fprintf(stderr, gettext("use umount(8) "
6176                             "to unmount this filesystem\n"));
6177                 } else {
6178                         ret = zfs_unmountall(zhp, flags);
6179                 }
6180         }
6181
6182 out:
6183         zfs_close(zhp);
6184
6185         return (ret != 0);
6186 }
6187
6188 /*
6189  * Generic callback for unsharing or unmounting a filesystem.
6190  */
6191 static int
6192 unshare_unmount(int op, int argc, char **argv)
6193 {
6194         int do_all = 0;
6195         int flags = 0;
6196         int ret = 0;
6197         int c;
6198         zfs_handle_t *zhp;
6199         char nfs_mnt_prop[ZFS_MAXPROPLEN];
6200         char sharesmb[ZFS_MAXPROPLEN];
6201
6202         /* check options */
6203         while ((c = getopt(argc, argv, op == OP_SHARE ? "a" : "af")) != -1) {
6204                 switch (c) {
6205                 case 'a':
6206                         do_all = 1;
6207                         break;
6208                 case 'f':
6209                         flags = MS_FORCE;
6210                         break;
6211                 case '?':
6212                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6213                             optopt);
6214                         usage(B_FALSE);
6215                 }
6216         }
6217
6218         argc -= optind;
6219         argv += optind;
6220
6221         if (do_all) {
6222                 /*
6223                  * We could make use of zfs_for_each() to walk all datasets in
6224                  * the system, but this would be very inefficient, especially
6225                  * since we would have to linearly search /etc/mtab for each
6226                  * one.  Instead, do one pass through /etc/mtab looking for
6227                  * zfs entries and call zfs_unmount() for each one.
6228                  *
6229                  * Things get a little tricky if the administrator has created
6230                  * mountpoints beneath other ZFS filesystems.  In this case, we
6231                  * have to unmount the deepest filesystems first.  To accomplish
6232                  * this, we place all the mountpoints in an AVL tree sorted by
6233                  * the special type (dataset name), and walk the result in
6234                  * reverse to make sure to get any snapshots first.
6235                  */
6236                 struct mnttab entry;
6237                 uu_avl_pool_t *pool;
6238                 uu_avl_t *tree = NULL;
6239                 unshare_unmount_node_t *node;
6240                 uu_avl_index_t idx;
6241                 uu_avl_walk_t *walk;
6242
6243                 if (argc != 0) {
6244                         (void) fprintf(stderr, gettext("too many arguments\n"));
6245                         usage(B_FALSE);
6246                 }
6247
6248                 if (((pool = uu_avl_pool_create("unmount_pool",
6249                     sizeof (unshare_unmount_node_t),
6250                     offsetof(unshare_unmount_node_t, un_avlnode),
6251                     unshare_unmount_compare, UU_DEFAULT)) == NULL) ||
6252                     ((tree = uu_avl_create(pool, NULL, UU_DEFAULT)) == NULL))
6253                         nomem();
6254
6255                 /* Reopen MNTTAB to prevent reading stale data from open file */
6256                 if (freopen(MNTTAB, "r", mnttab_file) == NULL)
6257                         return (ENOENT);
6258
6259                 while (getmntent(mnttab_file, &entry) == 0) {
6260
6261                         /* ignore non-ZFS entries */
6262                         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0)
6263                                 continue;
6264
6265                         /* ignore snapshots */
6266                         if (strchr(entry.mnt_special, '@') != NULL)
6267                                 continue;
6268
6269                         if ((zhp = zfs_open(g_zfs, entry.mnt_special,
6270                             ZFS_TYPE_FILESYSTEM)) == NULL) {
6271                                 ret = 1;
6272                                 continue;
6273                         }
6274
6275                         switch (op) {
6276                         case OP_SHARE:
6277                                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
6278                                     nfs_mnt_prop,
6279                                     sizeof (nfs_mnt_prop),
6280                                     NULL, NULL, 0, B_FALSE) == 0);
6281                                 if (strcmp(nfs_mnt_prop, "off") != 0)
6282                                         break;
6283                                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
6284                                     nfs_mnt_prop,
6285                                     sizeof (nfs_mnt_prop),
6286                                     NULL, NULL, 0, B_FALSE) == 0);
6287                                 if (strcmp(nfs_mnt_prop, "off") == 0)
6288                                         continue;
6289                                 break;
6290                         case OP_MOUNT:
6291                                 /* Ignore legacy mounts */
6292                                 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT,
6293                                     nfs_mnt_prop,
6294                                     sizeof (nfs_mnt_prop),
6295                                     NULL, NULL, 0, B_FALSE) == 0);
6296                                 if (strcmp(nfs_mnt_prop, "legacy") == 0)
6297                                         continue;
6298                                 /* Ignore canmount=noauto mounts */
6299                                 if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) ==
6300                                     ZFS_CANMOUNT_NOAUTO)
6301                                         continue;
6302                         default:
6303                                 break;
6304                         }
6305
6306                         node = safe_malloc(sizeof (unshare_unmount_node_t));
6307                         node->un_zhp = zhp;
6308                         node->un_mountp = safe_strdup(entry.mnt_mountp);
6309
6310                         uu_avl_node_init(node, &node->un_avlnode, pool);
6311
6312                         if (uu_avl_find(tree, node, NULL, &idx) == NULL) {
6313                                 uu_avl_insert(tree, node, idx);
6314                         } else {
6315                                 zfs_close(node->un_zhp);
6316                                 free(node->un_mountp);
6317                                 free(node);
6318                         }
6319                 }
6320
6321                 /*
6322                  * Walk the AVL tree in reverse, unmounting each filesystem and
6323                  * removing it from the AVL tree in the process.
6324                  */
6325                 if ((walk = uu_avl_walk_start(tree,
6326                     UU_WALK_REVERSE | UU_WALK_ROBUST)) == NULL)
6327                         nomem();
6328
6329                 while ((node = uu_avl_walk_next(walk)) != NULL) {
6330                         uu_avl_remove(tree, node);
6331
6332                         switch (op) {
6333                         case OP_SHARE:
6334                                 if (zfs_unshareall_bypath(node->un_zhp,
6335                                     node->un_mountp) != 0)
6336                                         ret = 1;
6337                                 break;
6338
6339                         case OP_MOUNT:
6340                                 if (zfs_unmount(node->un_zhp,
6341                                     node->un_mountp, flags) != 0)
6342                                         ret = 1;
6343                                 break;
6344                         }
6345
6346                         zfs_close(node->un_zhp);
6347                         free(node->un_mountp);
6348                         free(node);
6349                 }
6350
6351                 uu_avl_walk_end(walk);
6352                 uu_avl_destroy(tree);
6353                 uu_avl_pool_destroy(pool);
6354
6355         } else {
6356                 if (argc != 1) {
6357                         if (argc == 0)
6358                                 (void) fprintf(stderr,
6359                                     gettext("missing filesystem argument\n"));
6360                         else
6361                                 (void) fprintf(stderr,
6362                                     gettext("too many arguments\n"));
6363                         usage(B_FALSE);
6364                 }
6365
6366                 /*
6367                  * We have an argument, but it may be a full path or a ZFS
6368                  * filesystem.  Pass full paths off to unmount_path() (shared by
6369                  * manual_unmount), otherwise open the filesystem and pass to
6370                  * zfs_unmount().
6371                  */
6372                 if (argv[0][0] == '/')
6373                         return (unshare_unmount_path(op, argv[0],
6374                             flags, B_FALSE));
6375
6376                 if ((zhp = zfs_open(g_zfs, argv[0],
6377                     ZFS_TYPE_FILESYSTEM)) == NULL)
6378                         return (1);
6379
6380                 verify(zfs_prop_get(zhp, op == OP_SHARE ?
6381                     ZFS_PROP_SHARENFS : ZFS_PROP_MOUNTPOINT,
6382                     nfs_mnt_prop, sizeof (nfs_mnt_prop), NULL,
6383                     NULL, 0, B_FALSE) == 0);
6384
6385                 switch (op) {
6386                 case OP_SHARE:
6387                         verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
6388                             nfs_mnt_prop,
6389                             sizeof (nfs_mnt_prop),
6390                             NULL, NULL, 0, B_FALSE) == 0);
6391                         verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
6392                             sharesmb, sizeof (sharesmb), NULL, NULL,
6393                             0, B_FALSE) == 0);
6394
6395                         if (strcmp(nfs_mnt_prop, "off") == 0 &&
6396                             strcmp(sharesmb, "off") == 0) {
6397                                 (void) fprintf(stderr, gettext("cannot "
6398                                     "unshare '%s': legacy share\n"),
6399                                     zfs_get_name(zhp));
6400                                 (void) fprintf(stderr, gettext("use "
6401                                     "unshare(1M) to unshare this "
6402                                     "filesystem\n"));
6403                                 ret = 1;
6404                         } else if (!zfs_is_shared(zhp)) {
6405                                 (void) fprintf(stderr, gettext("cannot "
6406                                     "unshare '%s': not currently "
6407                                     "shared\n"), zfs_get_name(zhp));
6408                                 ret = 1;
6409                         } else if (zfs_unshareall(zhp) != 0) {
6410                                 ret = 1;
6411                         }
6412                         break;
6413
6414                 case OP_MOUNT:
6415                         if (strcmp(nfs_mnt_prop, "legacy") == 0) {
6416                                 (void) fprintf(stderr, gettext("cannot "
6417                                     "unmount '%s': legacy "
6418                                     "mountpoint\n"), zfs_get_name(zhp));
6419                                 (void) fprintf(stderr, gettext("use "
6420                                     "umount(1M) to unmount this "
6421                                     "filesystem\n"));
6422                                 ret = 1;
6423                         } else if (!zfs_is_mounted(zhp, NULL)) {
6424                                 (void) fprintf(stderr, gettext("cannot "
6425                                     "unmount '%s': not currently "
6426                                     "mounted\n"),
6427                                     zfs_get_name(zhp));
6428                                 ret = 1;
6429                         } else if (zfs_unmountall(zhp, flags) != 0) {
6430                                 ret = 1;
6431                         }
6432                         break;
6433                 }
6434
6435                 zfs_close(zhp);
6436         }
6437
6438         return (ret);
6439 }
6440
6441 /*
6442  * zfs unmount -a
6443  * zfs unmount filesystem
6444  *
6445  * Unmount all filesystems, or a specific ZFS filesystem.
6446  */
6447 static int
6448 zfs_do_unmount(int argc, char **argv)
6449 {
6450         return (unshare_unmount(OP_MOUNT, argc, argv));
6451 }
6452
6453 /*
6454  * zfs unshare -a
6455  * zfs unshare filesystem
6456  *
6457  * Unshare all filesystems, or a specific ZFS filesystem.
6458  */
6459 static int
6460 zfs_do_unshare(int argc, char **argv)
6461 {
6462         return (unshare_unmount(OP_SHARE, argc, argv));
6463 }
6464
6465 static int
6466 find_command_idx(char *command, int *idx)
6467 {
6468         int i;
6469
6470         for (i = 0; i < NCOMMAND; i++) {
6471                 if (command_table[i].name == NULL)
6472                         continue;
6473
6474                 if (strcmp(command, command_table[i].name) == 0) {
6475                         *idx = i;
6476                         return (0);
6477                 }
6478         }
6479         return (1);
6480 }
6481
6482 static int
6483 zfs_do_diff(int argc, char **argv)
6484 {
6485         zfs_handle_t *zhp;
6486         int flags = 0;
6487         char *tosnap = NULL;
6488         char *fromsnap = NULL;
6489         char *atp, *copy;
6490         int err = 0;
6491         int c;
6492
6493         while ((c = getopt(argc, argv, "FHt")) != -1) {
6494                 switch (c) {
6495                 case 'F':
6496                         flags |= ZFS_DIFF_CLASSIFY;
6497                         break;
6498                 case 'H':
6499                         flags |= ZFS_DIFF_PARSEABLE;
6500                         break;
6501                 case 't':
6502                         flags |= ZFS_DIFF_TIMESTAMP;
6503                         break;
6504                 default:
6505                         (void) fprintf(stderr,
6506                             gettext("invalid option '%c'\n"), optopt);
6507                         usage(B_FALSE);
6508                 }
6509         }
6510
6511         argc -= optind;
6512         argv += optind;
6513
6514         if (argc < 1) {
6515                 (void) fprintf(stderr,
6516                 gettext("must provide at least one snapshot name\n"));
6517                 usage(B_FALSE);
6518         }
6519
6520         if (argc > 2) {
6521                 (void) fprintf(stderr, gettext("too many arguments\n"));
6522                 usage(B_FALSE);
6523         }
6524
6525         fromsnap = argv[0];
6526         tosnap = (argc == 2) ? argv[1] : NULL;
6527
6528         copy = NULL;
6529         if (*fromsnap != '@')
6530                 copy = strdup(fromsnap);
6531         else if (tosnap)
6532                 copy = strdup(tosnap);
6533         if (copy == NULL)
6534                 usage(B_FALSE);
6535
6536         if ((atp = strchr(copy, '@')))
6537                 *atp = '\0';
6538
6539         if ((zhp = zfs_open(g_zfs, copy, ZFS_TYPE_FILESYSTEM)) == NULL)
6540                 return (1);
6541
6542         free(copy);
6543
6544         /*
6545          * Ignore SIGPIPE so that the library can give us
6546          * information on any failure
6547          */
6548         (void) sigignore(SIGPIPE);
6549
6550         err = zfs_show_diffs(zhp, STDOUT_FILENO, fromsnap, tosnap, flags);
6551
6552         zfs_close(zhp);
6553
6554         return (err != 0);
6555 }
6556
6557 /*
6558  * zfs bookmark <fs@snap> <fs#bmark>
6559  *
6560  * Creates a bookmark with the given name from the given snapshot.
6561  */
6562 static int
6563 zfs_do_bookmark(int argc, char **argv)
6564 {
6565         char snapname[ZFS_MAXNAMELEN];
6566         zfs_handle_t *zhp;
6567         nvlist_t *nvl;
6568         int ret = 0;
6569         int c;
6570
6571         /* check options */
6572         while ((c = getopt(argc, argv, "")) != -1) {
6573                 switch (c) {
6574                 case '?':
6575                         (void) fprintf(stderr,
6576                             gettext("invalid option '%c'\n"), optopt);
6577                         goto usage;
6578                 }
6579         }
6580
6581         argc -= optind;
6582         argv += optind;
6583
6584         /* check number of arguments */
6585         if (argc < 1) {
6586                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
6587                 goto usage;
6588         }
6589         if (argc < 2) {
6590                 (void) fprintf(stderr, gettext("missing bookmark argument\n"));
6591                 goto usage;
6592         }
6593
6594         if (strchr(argv[1], '#') == NULL) {
6595                 (void) fprintf(stderr,
6596                     gettext("invalid bookmark name '%s' -- "
6597                     "must contain a '#'\n"), argv[1]);
6598                 goto usage;
6599         }
6600
6601         if (argv[0][0] == '@') {
6602                 /*
6603                  * Snapshot name begins with @.
6604                  * Default to same fs as bookmark.
6605                  */
6606                 (void) strncpy(snapname, argv[1], sizeof (snapname));
6607                 *strchr(snapname, '#') = '\0';
6608                 (void) strlcat(snapname, argv[0], sizeof (snapname));
6609         } else {
6610                 (void) strncpy(snapname, argv[0], sizeof (snapname));
6611         }
6612         zhp = zfs_open(g_zfs, snapname, ZFS_TYPE_SNAPSHOT);
6613         if (zhp == NULL)
6614                 goto usage;
6615         zfs_close(zhp);
6616
6617
6618         nvl = fnvlist_alloc();
6619         fnvlist_add_string(nvl, argv[1], snapname);
6620         ret = lzc_bookmark(nvl, NULL);
6621         fnvlist_free(nvl);
6622
6623         if (ret != 0) {
6624                 const char *err_msg;
6625                 char errbuf[1024];
6626
6627                 (void) snprintf(errbuf, sizeof (errbuf),
6628                     dgettext(TEXT_DOMAIN,
6629                     "cannot create bookmark '%s'"), argv[1]);
6630
6631                 switch (ret) {
6632                 case EXDEV:
6633                         err_msg = "bookmark is in a different pool";
6634                         break;
6635                 case EEXIST:
6636                         err_msg = "bookmark exists";
6637                         break;
6638                 case EINVAL:
6639                         err_msg = "invalid argument";
6640                         break;
6641                 case ENOTSUP:
6642                         err_msg = "bookmark feature not enabled";
6643                         break;
6644                 case ENOSPC:
6645                         err_msg = "out of space";
6646                         break;
6647                 default:
6648                         err_msg = "unknown error";
6649                         break;
6650                 }
6651                 (void) fprintf(stderr, "%s: %s\n", errbuf,
6652                     dgettext(TEXT_DOMAIN, err_msg));
6653         }
6654
6655         return (ret != 0);
6656
6657 usage:
6658         usage(B_FALSE);
6659         return (-1);
6660 }
6661
6662 int
6663 main(int argc, char **argv)
6664 {
6665         int ret = 0;
6666         int i = 0;
6667         char *cmdname;
6668
6669         (void) setlocale(LC_ALL, "");
6670         (void) textdomain(TEXT_DOMAIN);
6671
6672         dprintf_setup(&argc, argv);
6673
6674         opterr = 0;
6675
6676         /*
6677          * Make sure the user has specified some command.
6678          */
6679         if (argc < 2) {
6680                 (void) fprintf(stderr, gettext("missing command\n"));
6681                 usage(B_FALSE);
6682         }
6683
6684         cmdname = argv[1];
6685
6686         /*
6687          * The 'umount' command is an alias for 'unmount'
6688          */
6689         if (strcmp(cmdname, "umount") == 0)
6690                 cmdname = "unmount";
6691
6692         /*
6693          * The 'recv' command is an alias for 'receive'
6694          */
6695         if (strcmp(cmdname, "recv") == 0)
6696                 cmdname = "receive";
6697
6698         /*
6699          * The 'snap' command is an alias for 'snapshot'
6700          */
6701         if (strcmp(cmdname, "snap") == 0)
6702                 cmdname = "snapshot";
6703
6704         /*
6705          * Special case '-?'
6706          */
6707         if ((strcmp(cmdname, "-?") == 0) ||
6708             (strcmp(cmdname, "--help") == 0))
6709                 usage(B_TRUE);
6710
6711         if ((g_zfs = libzfs_init()) == NULL)
6712                 return (1);
6713
6714         mnttab_file = g_zfs->libzfs_mnttab;
6715
6716         zfs_save_arguments(argc, argv, history_str, sizeof (history_str));
6717
6718         libzfs_print_on_error(g_zfs, B_TRUE);
6719
6720         /*
6721          * Run the appropriate command.
6722          */
6723         libzfs_mnttab_cache(g_zfs, B_TRUE);
6724         if (find_command_idx(cmdname, &i) == 0) {
6725                 current_command = &command_table[i];
6726                 ret = command_table[i].func(argc - 1, argv + 1);
6727         } else if (strchr(cmdname, '=') != NULL) {
6728                 verify(find_command_idx("set", &i) == 0);
6729                 current_command = &command_table[i];
6730                 ret = command_table[i].func(argc, argv);
6731         } else {
6732                 (void) fprintf(stderr, gettext("unrecognized "
6733                     "command '%s'\n"), cmdname);
6734                 usage(B_FALSE);
6735                 ret = 1;
6736         }
6737
6738         if (ret == 0 && log_history)
6739                 (void) zpool_log_history(g_zfs, history_str);
6740
6741         libzfs_fini(g_zfs);
6742
6743         /*
6744          * The 'ZFS_ABORT' environment variable causes us to dump core on exit
6745          * for the purposes of running ::findleaks.
6746          */
6747         if (getenv("ZFS_ABORT") != NULL) {
6748                 (void) printf("dumping core by request\n");
6749                 abort();
6750         }
6751
6752         return (ret);
6753 }