cmd/zfs/zfs_main.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Copyright (c) 2011, 2015 by Delphix. All rights reserved.
  25  * Copyright 2012 Milan Jurik. All rights reserved.
  26  * Copyright (c) 2012, Joyent, Inc. All rights reserved.
  27  * Copyright (c) 2013 Steven Hartland.  All rights reserved.
  28  * Copyright 2013 Nexenta Systems, Inc.  All rights reserved.
  29  */
  30
  31 #include <assert.h>
  32 #include <ctype.h>
  33 #include <errno.h>
  34 #include <libgen.h>
  35 #include <libintl.h>
  36 #include <libuutil.h>
  37 #include <libnvpair.h>
  38 #include <locale.h>
  39 #include <stddef.h>
  40 #include <stdio.h>
  41 #include <stdlib.h>
  42 #include <strings.h>
  43 #include <unistd.h>
  44 #include <fcntl.h>
  45 #include <zone.h>
  46 #include <grp.h>
  47 #include <pwd.h>
  48 #include <signal.h>
  49 #include <sys/list.h>
  50 #include <sys/mkdev.h>
  51 #include <sys/mntent.h>
  52 #include <sys/mnttab.h>
  53 #include <sys/mount.h>
  54 #include <sys/stat.h>
  55 #include <sys/fs/zfs.h>
  56 #include <sys/types.h>
  57 #include <time.h>
  58
  59 #include <libzfs.h>
  60 #include <libzfs_core.h>
  61 #include <zfs_prop.h>
  62 #include <zfs_deleg.h>
  63 #include <libuutil.h>
  64 #ifdef HAVE_IDMAP
  65 #include <aclutils.h>
  66 #include <directory.h>
  67 #endif /* HAVE_IDMAP */
  68
  69 #include "zfs_iter.h"
  70 #include "zfs_util.h"
  71 #include "zfs_comutil.h"
  72 #include "libzfs_impl.h"
  73
  74 libzfs_handle_t *g_zfs;
  75
  76 static FILE *mnttab_file;
  77 static char history_str[HIS_MAX_RECORD_LEN];
  78 static boolean_t log_history = B_TRUE;
  79
  80 static int zfs_do_clone(int argc, char **argv);
  81 static int zfs_do_create(int argc, char **argv);
  82 static int zfs_do_destroy(int argc, char **argv);
  83 static int zfs_do_get(int argc, char **argv);
  84 static int zfs_do_inherit(int argc, char **argv);
  85 static int zfs_do_list(int argc, char **argv);
  86 static int zfs_do_mount(int argc, char **argv);
  87 static int zfs_do_rename(int argc, char **argv);
  88 static int zfs_do_rollback(int argc, char **argv);
  89 static int zfs_do_set(int argc, char **argv);
  90 static int zfs_do_upgrade(int argc, char **argv);
  91 static int zfs_do_snapshot(int argc, char **argv);
  92 static int zfs_do_unmount(int argc, char **argv);
  93 static int zfs_do_share(int argc, char **argv);
  94 static int zfs_do_unshare(int argc, char **argv);
  95 static int zfs_do_send(int argc, char **argv);
  96 static int zfs_do_receive(int argc, char **argv);
  97 static int zfs_do_promote(int argc, char **argv);
  98 static int zfs_do_userspace(int argc, char **argv);
  99 static int zfs_do_allow(int argc, char **argv);
 100 static int zfs_do_unallow(int argc, char **argv);
 101 static int zfs_do_hold(int argc, char **argv);
 102 static int zfs_do_holds(int argc, char **argv);
 103 static int zfs_do_release(int argc, char **argv);
 104 static int zfs_do_diff(int argc, char **argv);
 105 static int zfs_do_bookmark(int argc, char **argv);
 106
 107 /*
 108  * Enable a reasonable set of defaults for libumem debugging on DEBUG builds.
 109  */
 110
 111 #ifdef DEBUG
 112 const char *
 113 _umem_debug_init(void)
 114 {
 115         return ("default,verbose"); /* $UMEM_DEBUG setting */
 116 }
 117
 118 const char *
 119 _umem_logging_init(void)
 120 {
 121         return ("fail,contents"); /* $UMEM_LOGGING setting */
 122 }
 123 #endif
 124
 125 typedef enum {
 126         HELP_CLONE,
 127         HELP_CREATE,
 128         HELP_DESTROY,
 129         HELP_GET,
 130         HELP_INHERIT,
 131         HELP_UPGRADE,
 132         HELP_LIST,
 133         HELP_MOUNT,
 134         HELP_PROMOTE,
 135         HELP_RECEIVE,
 136         HELP_RENAME,
 137         HELP_ROLLBACK,
 138         HELP_SEND,
 139         HELP_SET,
 140         HELP_SHARE,
 141         HELP_SNAPSHOT,
 142         HELP_UNMOUNT,
 143         HELP_UNSHARE,
 144         HELP_ALLOW,
 145         HELP_UNALLOW,
 146         HELP_USERSPACE,
 147         HELP_GROUPSPACE,
 148         HELP_HOLD,
 149         HELP_HOLDS,
 150         HELP_RELEASE,
 151         HELP_DIFF,
 152         HELP_BOOKMARK,
 153 } zfs_help_t;
 154
 155 typedef struct zfs_command {
 156         const char      *name;
 157         int             (*func)(int argc, char **argv);
 158         zfs_help_t      usage;
 159 } zfs_command_t;
 160
 161 /*
 162  * Master command table.  Each ZFS command has a name, associated function, and
 163  * usage message.  The usage messages need to be internationalized, so we have
 164  * to have a function to return the usage message based on a command index.
 165  *
 166  * These commands are organized according to how they are displayed in the usage
 167  * message.  An empty command (one with a NULL name) indicates an empty line in
 168  * the generic usage message.
 169  */
 170 static zfs_command_t command_table[] = {
 171         { "create",     zfs_do_create,          HELP_CREATE             },
 172         { "destroy",    zfs_do_destroy,         HELP_DESTROY            },
 173         { NULL },
 174         { "snapshot",   zfs_do_snapshot,        HELP_SNAPSHOT           },
 175         { "rollback",   zfs_do_rollback,        HELP_ROLLBACK           },
 176         { "clone",      zfs_do_clone,           HELP_CLONE              },
 177         { "promote",    zfs_do_promote,         HELP_PROMOTE            },
 178         { "rename",     zfs_do_rename,          HELP_RENAME             },
 179         { "bookmark",   zfs_do_bookmark,        HELP_BOOKMARK           },
 180         { NULL },
 181         { "list",       zfs_do_list,            HELP_LIST               },
 182         { NULL },
 183         { "set",        zfs_do_set,             HELP_SET                },
 184         { "get",        zfs_do_get,             HELP_GET                },
 185         { "inherit",    zfs_do_inherit,         HELP_INHERIT            },
 186         { "upgrade",    zfs_do_upgrade,         HELP_UPGRADE            },
 187         { "userspace",  zfs_do_userspace,       HELP_USERSPACE          },
 188         { "groupspace", zfs_do_userspace,       HELP_GROUPSPACE         },
 189         { NULL },
 190         { "mount",      zfs_do_mount,           HELP_MOUNT              },
 191         { "unmount",    zfs_do_unmount,         HELP_UNMOUNT            },
 192         { "share",      zfs_do_share,           HELP_SHARE              },
 193         { "unshare",    zfs_do_unshare,         HELP_UNSHARE            },
 194         { NULL },
 195         { "send",       zfs_do_send,            HELP_SEND               },
 196         { "receive",    zfs_do_receive,         HELP_RECEIVE            },
 197         { NULL },
 198         { "allow",      zfs_do_allow,           HELP_ALLOW              },
 199         { NULL },
 200         { "unallow",    zfs_do_unallow,         HELP_UNALLOW            },
 201         { NULL },
 202         { "hold",       zfs_do_hold,            HELP_HOLD               },
 203         { "holds",      zfs_do_holds,           HELP_HOLDS              },
 204         { "release",    zfs_do_release,         HELP_RELEASE            },
 205         { "diff",       zfs_do_diff,            HELP_DIFF               },
 206 };
 207
 208 #define NCOMMAND        (sizeof (command_table) / sizeof (command_table[0]))
 209
 210 zfs_command_t *current_command;
 211
 212 static const char *
 213 get_usage(zfs_help_t idx)
 214 {
 215         switch (idx) {
 216         case HELP_CLONE:
 217                 return (gettext("\tclone [-p] [-o property=value] ... "
 218                     "<snapshot> <filesystem|volume>\n"));
 219         case HELP_CREATE:
 220                 return (gettext("\tcreate [-p] [-o property=value] ... "
 221                     "<filesystem>\n"
 222                     "\tcreate [-ps] [-b blocksize] [-o property=value] ... "
 223                     "-V <size> <volume>\n"));
 224         case HELP_DESTROY:
 225                 return (gettext("\tdestroy [-fnpRrv] <filesystem|volume>\n"
 226                     "\tdestroy [-dnpRrv] "
 227                     "<filesystem|volume>@<snap>[%<snap>][,...]\n"
 228                     "\tdestroy <filesystem|volume>#<bookmark>\n"));
 229         case HELP_GET:
 230                 return (gettext("\tget [-rHp] [-d max] "
 231                     "[-o \"all\" | field[,...]]\n"
 232                     "\t    [-t type[,...]] [-s source[,...]]\n"
 233                     "\t    <\"all\" | property[,...]> "
 234                     "[filesystem|volume|snapshot] ...\n"));
 235         case HELP_INHERIT:
 236                 return (gettext("\tinherit [-rS] <property> "
 237                     "<filesystem|volume|snapshot> ...\n"));
 238         case HELP_UPGRADE:
 239                 return (gettext("\tupgrade [-v]\n"
 240                     "\tupgrade [-r] [-V version] <-a | filesystem ...>\n"));
 241         case HELP_LIST:
 242                 return (gettext("\tlist [-Hp] [-r|-d max] [-o property[,...]] "
 243                     "[-s property]...\n\t    [-S property]... [-t type[,...]] "
 244                     "[filesystem|volume|snapshot] ...\n"));
 245         case HELP_MOUNT:
 246                 return (gettext("\tmount\n"
 247                     "\tmount [-vO] [-o opts] <-a | filesystem>\n"));
 248         case HELP_PROMOTE:
 249                 return (gettext("\tpromote <clone-filesystem>\n"));
 250         case HELP_RECEIVE:
 251                 return (gettext("\treceive [-vnFu] <filesystem|volume|"
 252                     "snapshot>\n"
 253                     "\treceive [-vnFu] [-o origin=<snapshot>] [-d | -e] "
 254                     "<filesystem>\n"));
 255         case HELP_RENAME:
 256                 return (gettext("\trename [-f] <filesystem|volume|snapshot> "
 257                     "<filesystem|volume|snapshot>\n"
 258                     "\trename [-f] -p <filesystem|volume> <filesystem|volume>\n"
 259                     "\trename -r <snapshot> <snapshot>\n"));
 260         case HELP_ROLLBACK:
 261                 return (gettext("\trollback [-rRf] <snapshot>\n"));
 262         case HELP_SEND:
 263                 return (gettext("\tsend [-DnPpRvLe] [-[iI] snapshot] "
 264                     "<snapshot>\n"
 265                     "\tsend [-Le] [-i snapshot|bookmark] "
 266                     "<filesystem|volume|snapshot>\n"));
 267         case HELP_SET:
 268                 return (gettext("\tset <property=value> ... "
 269                     "<filesystem|volume|snapshot> ...\n"));
 270         case HELP_SHARE:
 271                 return (gettext("\tshare <-a | filesystem>\n"));
 272         case HELP_SNAPSHOT:
 273                 return (gettext("\tsnapshot|snap [-r] [-o property=value] ... "
 274                     "<filesystem|volume>@<snap> ...\n"));
 275         case HELP_UNMOUNT:
 276                 return (gettext("\tunmount [-f] "
 277                     "<-a | filesystem|mountpoint>\n"));
 278         case HELP_UNSHARE:
 279                 return (gettext("\tunshare "
 280                     "<-a | filesystem|mountpoint>\n"));
 281         case HELP_ALLOW:
 282                 return (gettext("\tallow <filesystem|volume>\n"
 283                     "\tallow [-ldug] "
 284                     "<\"everyone\"|user|group>[,...] <perm|@setname>[,...]\n"
 285                     "\t    <filesystem|volume>\n"
 286                     "\tallow [-ld] -e <perm|@setname>[,...] "
 287                     "<filesystem|volume>\n"
 288                     "\tallow -c <perm|@setname>[,...] <filesystem|volume>\n"
 289                     "\tallow -s @setname <perm|@setname>[,...] "
 290                     "<filesystem|volume>\n"));
 291         case HELP_UNALLOW:
 292                 return (gettext("\tunallow [-rldug] "
 293                     "<\"everyone\"|user|group>[,...]\n"
 294                     "\t    [<perm|@setname>[,...]] <filesystem|volume>\n"
 295                     "\tunallow [-rld] -e [<perm|@setname>[,...]] "
 296                     "<filesystem|volume>\n"
 297                     "\tunallow [-r] -c [<perm|@setname>[,...]] "
 298                     "<filesystem|volume>\n"
 299                     "\tunallow [-r] -s @setname [<perm|@setname>[,...]] "
 300                     "<filesystem|volume>\n"));
 301         case HELP_USERSPACE:
 302                 return (gettext("\tuserspace [-Hinp] [-o field[,...]] "
 303                     "[-s field] ...\n"
 304                     "\t    [-S field] ... [-t type[,...]] "
 305                     "<filesystem|snapshot>\n"));
 306         case HELP_GROUPSPACE:
 307                 return (gettext("\tgroupspace [-Hinp] [-o field[,...]] "
 308                     "[-s field] ...\n"
 309                     "\t    [-S field] ... [-t type[,...]] "
 310                     "<filesystem|snapshot>\n"));
 311         case HELP_HOLD:
 312                 return (gettext("\thold [-r] <tag> <snapshot> ...\n"));
 313         case HELP_HOLDS:
 314                 return (gettext("\tholds [-r] <snapshot> ...\n"));
 315         case HELP_RELEASE:
 316                 return (gettext("\trelease [-r] <tag> <snapshot> ...\n"));
 317         case HELP_DIFF:
 318                 return (gettext("\tdiff [-FHt] <snapshot> "
 319                     "[snapshot|filesystem]\n"));
 320         case HELP_BOOKMARK:
 321                 return (gettext("\tbookmark <snapshot> <bookmark>\n"));
 322         }
 323
 324         abort();
 325         /* NOTREACHED */
 326 }
 327
 328 void
 329 nomem(void)
 330 {
 331         (void) fprintf(stderr, gettext("internal error: out of memory\n"));
 332         exit(1);
 333 }
 334
 335 /*
 336  * Utility function to guarantee malloc() success.
 337  */
 338
 339 void *
 340 safe_malloc(size_t size)
 341 {
 342         void *data;
 343
 344         if ((data = calloc(1, size)) == NULL)
 345                 nomem();
 346
 347         return (data);
 348 }
 349
 350 static char *
 351 safe_strdup(char *str)
 352 {
 353         char *dupstr = strdup(str);
 354
 355         if (dupstr == NULL)
 356                 nomem();
 357
 358         return (dupstr);
 359 }
 360
 361 /*
 362  * Callback routine that will print out information for each of
 363  * the properties.
 364  */
 365 static int
 366 usage_prop_cb(int prop, void *cb)
 367 {
 368         FILE *fp = cb;
 369
 370         (void) fprintf(fp, "\t%-15s ", zfs_prop_to_name(prop));
 371
 372         if (zfs_prop_readonly(prop))
 373                 (void) fprintf(fp, " NO    ");
 374         else
 375                 (void) fprintf(fp, "YES    ");
 376
 377         if (zfs_prop_inheritable(prop))
 378                 (void) fprintf(fp, "  YES   ");
 379         else
 380                 (void) fprintf(fp, "   NO   ");
 381
 382         if (zfs_prop_values(prop) == NULL)
 383                 (void) fprintf(fp, "-\n");
 384         else
 385                 (void) fprintf(fp, "%s\n", zfs_prop_values(prop));
 386
 387         return (ZPROP_CONT);
 388 }
 389
 390 /*
 391  * Display usage message.  If we're inside a command, display only the usage for
 392  * that command.  Otherwise, iterate over the entire command table and display
 393  * a complete usage message.
 394  */
 395 static void
 396 usage(boolean_t requested)
 397 {
 398         int i;
 399         boolean_t show_properties = B_FALSE;
 400         FILE *fp = requested ? stdout : stderr;
 401
 402         if (current_command == NULL) {
 403
 404                 (void) fprintf(fp, gettext("usage: zfs command args ...\n"));
 405                 (void) fprintf(fp,
 406                     gettext("where 'command' is one of the following:\n\n"));
 407
 408                 for (i = 0; i < NCOMMAND; i++) {
 409                         if (command_table[i].name == NULL)
 410                                 (void) fprintf(fp, "\n");
 411                         else
 412                                 (void) fprintf(fp, "%s",
 413                                     get_usage(command_table[i].usage));
 414                 }
 415
 416                 (void) fprintf(fp, gettext("\nEach dataset is of the form: "
 417                     "pool/[dataset/]*dataset[@name]\n"));
 418         } else {
 419                 (void) fprintf(fp, gettext("usage:\n"));
 420                 (void) fprintf(fp, "%s", get_usage(current_command->usage));
 421         }
 422
 423         if (current_command != NULL &&
 424             (strcmp(current_command->name, "set") == 0 ||
 425             strcmp(current_command->name, "get") == 0 ||
 426             strcmp(current_command->name, "inherit") == 0 ||
 427             strcmp(current_command->name, "list") == 0))
 428                 show_properties = B_TRUE;
 429
 430         if (show_properties) {
 431                 (void) fprintf(fp,
 432                     gettext("\nThe following properties are supported:\n"));
 433
 434                 (void) fprintf(fp, "\n\t%-14s %s  %s   %s\n\n",
 435                     "PROPERTY", "EDIT", "INHERIT", "VALUES");
 436
 437                 /* Iterate over all properties */
 438                 (void) zprop_iter(usage_prop_cb, fp, B_FALSE, B_TRUE,
 439                     ZFS_TYPE_DATASET);
 440
 441                 (void) fprintf(fp, "\t%-15s ", "userused@...");
 442                 (void) fprintf(fp, " NO       NO   <size>\n");
 443                 (void) fprintf(fp, "\t%-15s ", "groupused@...");
 444                 (void) fprintf(fp, " NO       NO   <size>\n");
 445                 (void) fprintf(fp, "\t%-15s ", "userquota@...");
 446                 (void) fprintf(fp, "YES       NO   <size> | none\n");
 447                 (void) fprintf(fp, "\t%-15s ", "groupquota@...");
 448                 (void) fprintf(fp, "YES       NO   <size> | none\n");
 449                 (void) fprintf(fp, "\t%-15s ", "written@<snap>");
 450                 (void) fprintf(fp, " NO       NO   <size>\n");
 451
 452                 (void) fprintf(fp, gettext("\nSizes are specified in bytes "
 453                     "with standard units such as K, M, G, etc.\n"));
 454                 (void) fprintf(fp, gettext("\nUser-defined properties can "
 455                     "be specified by using a name containing a colon (:).\n"));
 456                 (void) fprintf(fp, gettext("\nThe {user|group}{used|quota}@ "
 457                     "properties must be appended with\n"
 458                     "a user or group specifier of one of these forms:\n"
 459                     "    POSIX name      (eg: \"matt\")\n"
 460                     "    POSIX id        (eg: \"126829\")\n"
 461                     "    SMB name@domain (eg: \"matt@sun\")\n"
 462                     "    SMB SID         (eg: \"S-1-234-567-89\")\n"));
 463         } else {
 464                 (void) fprintf(fp,
 465                     gettext("\nFor the property list, run: %s\n"),
 466                     "zfs set|get");
 467                 (void) fprintf(fp,
 468                     gettext("\nFor the delegated permission list, run: %s\n"),
 469                     "zfs allow|unallow");
 470         }
 471
 472         /*
 473          * See comments at end of main().
 474          */
 475         if (getenv("ZFS_ABORT") != NULL) {
 476                 (void) printf("dumping core by request\n");
 477                 abort();
 478         }
 479
 480         exit(requested ? 0 : 2);
 481 }
 482
 483 /*
 484  * Take a property=value argument string and add it to the given nvlist.
 485  * Modifies the argument inplace.
 486  */
 487 static int
 488 parseprop(nvlist_t *props, char *propname)
 489 {
 490         char *propval, *strval;
 491
 492         if ((propval = strchr(propname, '=')) == NULL) {
 493                 (void) fprintf(stderr, gettext("missing "
 494                     "'=' for property=value argument\n"));
 495                 return (-1);
 496         }
 497         *propval = '\0';
 498         propval++;
 499         if (nvlist_lookup_string(props, propname, &strval) == 0) {
 500                 (void) fprintf(stderr, gettext("property '%s' "
 501                     "specified multiple times\n"), propname);
 502                 return (-1);
 503         }
 504         if (nvlist_add_string(props, propname, propval) != 0)
 505                 nomem();
 506         return (0);
 507 }
 508
 509 static int
 510 parse_depth(char *opt, int *flags)
 511 {
 512         char *tmp;
 513         int depth;
 514
 515         depth = (int)strtol(opt, &tmp, 0);
 516         if (*tmp) {
 517                 (void) fprintf(stderr,
 518                     gettext("%s is not an integer\n"), optarg);
 519                 usage(B_FALSE);
 520         }
 521         if (depth < 0) {
 522                 (void) fprintf(stderr,
 523                     gettext("Depth can not be negative.\n"));
 524                 usage(B_FALSE);
 525         }
 526         *flags |= (ZFS_ITER_DEPTH_LIMIT|ZFS_ITER_RECURSE);
 527         return (depth);
 528 }
 529
 530 #define PROGRESS_DELAY 2                /* seconds */
 531
 532 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";
 533 static time_t pt_begin;
 534 static char *pt_header = NULL;
 535 static boolean_t pt_shown;
 536
 537 static void
 538 start_progress_timer(void)
 539 {
 540         pt_begin = time(NULL) + PROGRESS_DELAY;
 541         pt_shown = B_FALSE;
 542 }
 543
 544 static void
 545 set_progress_header(char *header)
 546 {
 547         assert(pt_header == NULL);
 548         pt_header = safe_strdup(header);
 549         if (pt_shown) {
 550                 (void) printf("%s: ", header);
 551                 (void) fflush(stdout);
 552         }
 553 }
 554
 555 static void
 556 update_progress(char *update)
 557 {
 558         if (!pt_shown && time(NULL) > pt_begin) {
 559                 int len = strlen(update);
 560
 561                 (void) printf("%s: %s%*.*s", pt_header, update, len, len,
 562                     pt_reverse);
 563                 (void) fflush(stdout);
 564                 pt_shown = B_TRUE;
 565         } else if (pt_shown) {
 566                 int len = strlen(update);
 567
 568                 (void) printf("%s%*.*s", update, len, len, pt_reverse);
 569                 (void) fflush(stdout);
 570         }
 571 }
 572
 573 static void
 574 finish_progress(char *done)
 575 {
 576         if (pt_shown) {
 577                 (void) printf("%s\n", done);
 578                 (void) fflush(stdout);
 579         }
 580         free(pt_header);
 581         pt_header = NULL;
 582 }
 583
 584 static int
 585 zfs_mount_and_share(libzfs_handle_t *hdl, const char *dataset, zfs_type_t type)
 586 {
 587         zfs_handle_t *zhp = NULL;
 588         int ret = 0;
 589
 590         zhp = zfs_open(hdl, dataset, type);
 591         if (zhp == NULL)
 592                 return (1);
 593
 594         /*
 595          * Volumes may neither be mounted or shared.  Potentially in the
 596          * future filesystems detected on these volumes could be mounted.
 597          */
 598         if (zfs_get_type(zhp) == ZFS_TYPE_VOLUME) {
 599                 zfs_close(zhp);
 600                 return (0);
 601         }
 602
 603         /*
 604          * Mount and/or share the new filesystem as appropriate.  We provide a
 605          * verbose error message to let the user know that their filesystem was
 606          * in fact created, even if we failed to mount or share it.
 607          *
 608          * If the user doesn't want the dataset automatically mounted, then
 609          * skip the mount/share step
 610          */
 611         if (zfs_prop_valid_for_type(ZFS_PROP_CANMOUNT, type, B_FALSE) &&
 612             zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) == ZFS_CANMOUNT_ON) {
 613                 if (zfs_mount(zhp, NULL, 0) != 0) {
 614                         (void) fprintf(stderr, gettext("filesystem "
 615                             "successfully created, but not mounted\n"));
 616                         ret = 1;
 617                 } else if (zfs_share(zhp) != 0) {
 618                         (void) fprintf(stderr, gettext("filesystem "
 619                             "successfully created, but not shared\n"));
 620                         ret = 1;
 621                 }
 622         }
 623
 624         zfs_close(zhp);
 625
 626         return (ret);
 627 }
 628
 629 /*
 630  * zfs clone [-p] [-o prop=value] ... <snap> <fs | vol>
 631  *
 632  * Given an existing dataset, create a writable copy whose initial contents
 633  * are the same as the source.  The newly created dataset maintains a
 634  * dependency on the original; the original cannot be destroyed so long as
 635  * the clone exists.
 636  *
 637  * The '-p' flag creates all the non-existing ancestors of the target first.
 638  */
 639 static int
 640 zfs_do_clone(int argc, char **argv)
 641 {
 642         zfs_handle_t *zhp = NULL;
 643         boolean_t parents = B_FALSE;
 644         nvlist_t *props;
 645         int ret = 0;
 646         int c;
 647
 648         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
 649                 nomem();
 650
 651         /* check options */
 652         while ((c = getopt(argc, argv, "o:p")) != -1) {
 653                 switch (c) {
 654                 case 'o':
 655                         if (parseprop(props, optarg) != 0)
 656                                 return (1);
 657                         break;
 658                 case 'p':
 659                         parents = B_TRUE;
 660                         break;
 661                 case '?':
 662                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
 663                             optopt);
 664                         goto usage;
 665                 }
 666         }
 667
 668         argc -= optind;
 669         argv += optind;
 670
 671         /* check number of arguments */
 672         if (argc < 1) {
 673                 (void) fprintf(stderr, gettext("missing source dataset "
 674                     "argument\n"));
 675                 goto usage;
 676         }
 677         if (argc < 2) {
 678                 (void) fprintf(stderr, gettext("missing target dataset "
 679                     "argument\n"));
 680                 goto usage;
 681         }
 682         if (argc > 2) {
 683                 (void) fprintf(stderr, gettext("too many arguments\n"));
 684                 goto usage;
 685         }
 686
 687         /* open the source dataset */
 688         if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
 689                 return (1);
 690
 691         if (parents && zfs_name_valid(argv[1], ZFS_TYPE_FILESYSTEM |
 692             ZFS_TYPE_VOLUME)) {
 693                 /*
 694                  * Now create the ancestors of the target dataset.  If the
 695                  * target already exists and '-p' option was used we should not
 696                  * complain.
 697                  */
 698                 if (zfs_dataset_exists(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM |
 699                     ZFS_TYPE_VOLUME))
 700                         return (0);
 701                 if (zfs_create_ancestors(g_zfs, argv[1]) != 0)
 702                         return (1);
 703         }
 704
 705         /* pass to libzfs */
 706         ret = zfs_clone(zhp, argv[1], props);
 707
 708         /* create the mountpoint if necessary */
 709         if (ret == 0) {
 710                 if (log_history) {
 711                         (void) zpool_log_history(g_zfs, history_str);
 712                         log_history = B_FALSE;
 713                 }
 714
 715                 ret = zfs_mount_and_share(g_zfs, argv[1], ZFS_TYPE_DATASET);
 716         }
 717
 718         zfs_close(zhp);
 719         nvlist_free(props);
 720
 721         return (!!ret);
 722
 723 usage:
 724         if (zhp)
 725                 zfs_close(zhp);
 726         nvlist_free(props);
 727         usage(B_FALSE);
 728         return (-1);
 729 }
 730
 731 /*
 732  * zfs create [-p] [-o prop=value] ... fs
 733  * zfs create [-ps] [-b blocksize] [-o prop=value] ... -V vol size
 734  *
 735  * Create a new dataset.  This command can be used to create filesystems
 736  * and volumes.  Snapshot creation is handled by 'zfs snapshot'.
 737  * For volumes, the user must specify a size to be used.
 738  *
 739  * The '-s' flag applies only to volumes, and indicates that we should not try
 740  * to set the reservation for this volume.  By default we set a reservation
 741  * equal to the size for any volume.  For pools with SPA_VERSION >=
 742  * SPA_VERSION_REFRESERVATION, we set a refreservation instead.
 743  *
 744  * The '-p' flag creates all the non-existing ancestors of the target first.
 745  */
 746 static int
 747 zfs_do_create(int argc, char **argv)
 748 {
 749         zfs_type_t type = ZFS_TYPE_FILESYSTEM;
 750         uint64_t volsize = 0;
 751         int c;
 752         boolean_t noreserve = B_FALSE;
 753         boolean_t bflag = B_FALSE;
 754         boolean_t parents = B_FALSE;
 755         int ret = 1;
 756         nvlist_t *props;
 757         uint64_t intval;
 758
 759         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
 760                 nomem();
 761
 762         /* check options */
 763         while ((c = getopt(argc, argv, ":V:b:so:p")) != -1) {
 764                 switch (c) {
 765                 case 'V':
 766                         type = ZFS_TYPE_VOLUME;
 767                         if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
 768                                 (void) fprintf(stderr, gettext("bad volume "
 769                                     "size '%s': %s\n"), optarg,
 770                                     libzfs_error_description(g_zfs));
 771                                 goto error;
 772                         }
 773
 774                         if (nvlist_add_uint64(props,
 775                             zfs_prop_to_name(ZFS_PROP_VOLSIZE), intval) != 0)
 776                                 nomem();
 777                         volsize = intval;
 778                         break;
 779                 case 'p':
 780                         parents = B_TRUE;
 781                         break;
 782                 case 'b':
 783                         bflag = B_TRUE;
 784                         if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
 785                                 (void) fprintf(stderr, gettext("bad volume "
 786                                     "block size '%s': %s\n"), optarg,
 787                                     libzfs_error_description(g_zfs));
 788                                 goto error;
 789                         }
 790
 791                         if (nvlist_add_uint64(props,
 792                             zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
 793                             intval) != 0)
 794                                 nomem();
 795                         break;
 796                 case 'o':
 797                         if (parseprop(props, optarg) != 0)
 798                                 goto error;
 799                         break;
 800                 case 's':
 801                         noreserve = B_TRUE;
 802                         break;
 803                 case ':':
 804                         (void) fprintf(stderr, gettext("missing size "
 805                             "argument\n"));
 806                         goto badusage;
 807                 case '?':
 808                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
 809                             optopt);
 810                         goto badusage;
 811                 }
 812         }
 813
 814         if ((bflag || noreserve) && type != ZFS_TYPE_VOLUME) {
 815                 (void) fprintf(stderr, gettext("'-s' and '-b' can only be "
 816                     "used when creating a volume\n"));
 817                 goto badusage;
 818         }
 819
 820         argc -= optind;
 821         argv += optind;
 822
 823         /* check number of arguments */
 824         if (argc == 0) {
 825                 (void) fprintf(stderr, gettext("missing %s argument\n"),
 826                     zfs_type_to_name(type));
 827                 goto badusage;
 828         }
 829         if (argc > 1) {
 830                 (void) fprintf(stderr, gettext("too many arguments\n"));
 831                 goto badusage;
 832         }
 833
 834         if (type == ZFS_TYPE_VOLUME && !noreserve) {
 835                 zpool_handle_t *zpool_handle;
 836                 nvlist_t *real_props = NULL;
 837                 uint64_t spa_version;
 838                 char *p;
 839                 zfs_prop_t resv_prop;
 840                 char *strval;
 841                 char msg[1024];
 842
 843                 if ((p = strchr(argv[0], '/')))
 844                         *p = '\0';
 845                 zpool_handle = zpool_open(g_zfs, argv[0]);
 846                 if (p != NULL)
 847                         *p = '/';
 848                 if (zpool_handle == NULL)
 849                         goto error;
 850                 spa_version = zpool_get_prop_int(zpool_handle,
 851                     ZPOOL_PROP_VERSION, NULL);
 852                 if (spa_version >= SPA_VERSION_REFRESERVATION)
 853                         resv_prop = ZFS_PROP_REFRESERVATION;
 854                 else
 855                         resv_prop = ZFS_PROP_RESERVATION;
 856
 857                 (void) snprintf(msg, sizeof (msg),
 858                     gettext("cannot create '%s'"), argv[0]);
 859                 if (props && (real_props = zfs_valid_proplist(g_zfs, type,
 860                     props, 0, NULL, zpool_handle, msg)) == NULL) {
 861                         zpool_close(zpool_handle);
 862                         goto error;
 863                 }
 864                 zpool_close(zpool_handle);
 865
 866                 volsize = zvol_volsize_to_reservation(volsize, real_props);
 867                 nvlist_free(real_props);
 868
 869                 if (nvlist_lookup_string(props, zfs_prop_to_name(resv_prop),
 870                     &strval) != 0) {
 871                         if (nvlist_add_uint64(props,
 872                             zfs_prop_to_name(resv_prop), volsize) != 0) {
 873                                 nvlist_free(props);
 874                                 nomem();
 875                         }
 876                 }
 877         }
 878
 879         if (parents && zfs_name_valid(argv[0], type)) {
 880                 /*
 881                  * Now create the ancestors of target dataset.  If the target
 882                  * already exists and '-p' option was used we should not
 883                  * complain.
 884                  */
 885                 if (zfs_dataset_exists(g_zfs, argv[0], type)) {
 886                         ret = 0;
 887                         goto error;
 888                 }
 889                 if (zfs_create_ancestors(g_zfs, argv[0]) != 0)
 890                         goto error;
 891         }
 892
 893         /* pass to libzfs */
 894         if (zfs_create(g_zfs, argv[0], type, props) != 0)
 895                 goto error;
 896
 897         if (log_history) {
 898                 (void) zpool_log_history(g_zfs, history_str);
 899                 log_history = B_FALSE;
 900         }
 901
 902         ret = zfs_mount_and_share(g_zfs, argv[0], ZFS_TYPE_DATASET);
 903 error:
 904         nvlist_free(props);
 905         return (ret);
 906 badusage:
 907         nvlist_free(props);
 908         usage(B_FALSE);
 909         return (2);
 910 }
 911
 912 /*
 913  * zfs destroy [-rRf] <fs, vol>
 914  * zfs destroy [-rRd] <snap>
 915  *
 916  *      -r      Recursively destroy all children
 917  *      -R      Recursively destroy all dependents, including clones
 918  *      -f      Force unmounting of any dependents
 919  *      -d      If we can't destroy now, mark for deferred destruction
 920  *
 921  * Destroys the given dataset.  By default, it will unmount any filesystems,
 922  * and refuse to destroy a dataset that has any dependents.  A dependent can
 923  * either be a child, or a clone of a child.
 924  */
 925 typedef struct destroy_cbdata {
 926         boolean_t       cb_first;
 927         boolean_t       cb_force;
 928         boolean_t       cb_recurse;
 929         boolean_t       cb_error;
 930         boolean_t       cb_doclones;
 931         zfs_handle_t    *cb_target;
 932         boolean_t       cb_defer_destroy;
 933         boolean_t       cb_verbose;
 934         boolean_t       cb_parsable;
 935         boolean_t       cb_dryrun;
 936         nvlist_t        *cb_nvl;
 937         nvlist_t        *cb_batchedsnaps;
 938
 939         /* first snap in contiguous run */
 940         char            *cb_firstsnap;
 941         /* previous snap in contiguous run */
 942         char            *cb_prevsnap;
 943         int64_t         cb_snapused;
 944         char            *cb_snapspec;
 945         char            *cb_bookmark;
 946 } destroy_cbdata_t;
 947
 948 /*
 949  * Check for any dependents based on the '-r' or '-R' flags.
 950  */
 951 static int
 952 destroy_check_dependent(zfs_handle_t *zhp, void *data)
 953 {
 954         destroy_cbdata_t *cbp = data;
 955         const char *tname = zfs_get_name(cbp->cb_target);
 956         const char *name = zfs_get_name(zhp);
 957
 958         if (strncmp(tname, name, strlen(tname)) == 0 &&
 959             (name[strlen(tname)] == '/' || name[strlen(tname)] == '@')) {
 960                 /*
 961                  * This is a direct descendant, not a clone somewhere else in
 962                  * the hierarchy.
 963                  */
 964                 if (cbp->cb_recurse)
 965                         goto out;
 966
 967                 if (cbp->cb_first) {
 968                         (void) fprintf(stderr, gettext("cannot destroy '%s': "
 969                             "%s has children\n"),
 970                             zfs_get_name(cbp->cb_target),
 971                             zfs_type_to_name(zfs_get_type(cbp->cb_target)));
 972                         (void) fprintf(stderr, gettext("use '-r' to destroy "
 973                             "the following datasets:\n"));
 974                         cbp->cb_first = B_FALSE;
 975                         cbp->cb_error = B_TRUE;
 976                 }
 977
 978                 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
 979         } else {
 980                 /*
 981                  * This is a clone.  We only want to report this if the '-r'
 982                  * wasn't specified, or the target is a snapshot.
 983                  */
 984                 if (!cbp->cb_recurse &&
 985                     zfs_get_type(cbp->cb_target) != ZFS_TYPE_SNAPSHOT)
 986                         goto out;
 987
 988                 if (cbp->cb_first) {
 989                         (void) fprintf(stderr, gettext("cannot destroy '%s': "
 990                             "%s has dependent clones\n"),
 991                             zfs_get_name(cbp->cb_target),
 992                             zfs_type_to_name(zfs_get_type(cbp->cb_target)));
 993                         (void) fprintf(stderr, gettext("use '-R' to destroy "
 994                             "the following datasets:\n"));
 995                         cbp->cb_first = B_FALSE;
 996                         cbp->cb_error = B_TRUE;
 997                         cbp->cb_dryrun = B_TRUE;
 998                 }
 999
1000                 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
1001         }
1002
1003 out:
1004         zfs_close(zhp);
1005         return (0);
1006 }
1007
1008 static int
1009 destroy_callback(zfs_handle_t *zhp, void *data)
1010 {
1011         destroy_cbdata_t *cb = data;
1012         const char *name = zfs_get_name(zhp);
1013
1014         if (cb->cb_verbose) {
1015                 if (cb->cb_parsable) {
1016                         (void) printf("destroy\t%s\n", name);
1017                 } else if (cb->cb_dryrun) {
1018                         (void) printf(gettext("would destroy %s\n"),
1019                             name);
1020                 } else {
1021                         (void) printf(gettext("will destroy %s\n"),
1022                             name);
1023                 }
1024         }
1025
1026         /*
1027          * Ignore pools (which we've already flagged as an error before getting
1028          * here).
1029          */
1030         if (strchr(zfs_get_name(zhp), '/') == NULL &&
1031             zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
1032                 zfs_close(zhp);
1033                 return (0);
1034         }
1035         if (cb->cb_dryrun) {
1036                 zfs_close(zhp);
1037                 return (0);
1038         }
1039
1040         /*
1041          * We batch up all contiguous snapshots (even of different
1042          * filesystems) and destroy them with one ioctl.  We can't
1043          * simply do all snap deletions and then all fs deletions,
1044          * because we must delete a clone before its origin.
1045          */
1046         if (zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT) {
1047                 fnvlist_add_boolean(cb->cb_batchedsnaps, name);
1048         } else {
1049                 int error = zfs_destroy_snaps_nvl(g_zfs,
1050                     cb->cb_batchedsnaps, B_FALSE);
1051                 fnvlist_free(cb->cb_batchedsnaps);
1052                 cb->cb_batchedsnaps = fnvlist_alloc();
1053
1054                 if (error != 0 ||
1055                     zfs_unmount(zhp, NULL, cb->cb_force ? MS_FORCE : 0) != 0 ||
1056                     zfs_destroy(zhp, cb->cb_defer_destroy) != 0) {
1057                         zfs_close(zhp);
1058                         return (-1);
1059                 }
1060         }
1061
1062         zfs_close(zhp);
1063         return (0);
1064 }
1065
1066 static int
1067 destroy_print_cb(zfs_handle_t *zhp, void *arg)
1068 {
1069         destroy_cbdata_t *cb = arg;
1070         const char *name = zfs_get_name(zhp);
1071         int err = 0;
1072
1073         if (nvlist_exists(cb->cb_nvl, name)) {
1074                 if (cb->cb_firstsnap == NULL)
1075                         cb->cb_firstsnap = strdup(name);
1076                 if (cb->cb_prevsnap != NULL)
1077                         free(cb->cb_prevsnap);
1078                 /* this snap continues the current range */
1079                 cb->cb_prevsnap = strdup(name);
1080                 if (cb->cb_firstsnap == NULL || cb->cb_prevsnap == NULL)
1081                         nomem();
1082                 if (cb->cb_verbose) {
1083                         if (cb->cb_parsable) {
1084                                 (void) printf("destroy\t%s\n", name);
1085                         } else if (cb->cb_dryrun) {
1086                                 (void) printf(gettext("would destroy %s\n"),
1087                                     name);
1088                         } else {
1089                                 (void) printf(gettext("will destroy %s\n"),
1090                                     name);
1091                         }
1092                 }
1093         } else if (cb->cb_firstsnap != NULL) {
1094                 /* end of this range */
1095                 uint64_t used = 0;
1096                 err = lzc_snaprange_space(cb->cb_firstsnap,
1097                     cb->cb_prevsnap, &used);
1098                 cb->cb_snapused += used;
1099                 free(cb->cb_firstsnap);
1100                 cb->cb_firstsnap = NULL;
1101                 free(cb->cb_prevsnap);
1102                 cb->cb_prevsnap = NULL;
1103         }
1104         zfs_close(zhp);
1105         return (err);
1106 }
1107
1108 static int
1109 destroy_print_snapshots(zfs_handle_t *fs_zhp, destroy_cbdata_t *cb)
1110 {
1111         int err;
1112         assert(cb->cb_firstsnap == NULL);
1113         assert(cb->cb_prevsnap == NULL);
1114         err = zfs_iter_snapshots_sorted(fs_zhp, destroy_print_cb, cb);
1115         if (cb->cb_firstsnap != NULL) {
1116                 uint64_t used = 0;
1117                 if (err == 0) {
1118                         err = lzc_snaprange_space(cb->cb_firstsnap,
1119                             cb->cb_prevsnap, &used);
1120                 }
1121                 cb->cb_snapused += used;
1122                 free(cb->cb_firstsnap);
1123                 cb->cb_firstsnap = NULL;
1124                 free(cb->cb_prevsnap);
1125                 cb->cb_prevsnap = NULL;
1126         }
1127         return (err);
1128 }
1129
1130 static int
1131 snapshot_to_nvl_cb(zfs_handle_t *zhp, void *arg)
1132 {
1133         destroy_cbdata_t *cb = arg;
1134         int err = 0;
1135
1136         /* Check for clones. */
1137         if (!cb->cb_doclones && !cb->cb_defer_destroy) {
1138                 cb->cb_target = zhp;
1139                 cb->cb_first = B_TRUE;
1140                 err = zfs_iter_dependents(zhp, B_TRUE,
1141                     destroy_check_dependent, cb);
1142         }
1143
1144         if (err == 0) {
1145                 if (nvlist_add_boolean(cb->cb_nvl, zfs_get_name(zhp)))
1146                         nomem();
1147         }
1148         zfs_close(zhp);
1149         return (err);
1150 }
1151
1152 static int
1153 gather_snapshots(zfs_handle_t *zhp, void *arg)
1154 {
1155         destroy_cbdata_t *cb = arg;
1156         int err = 0;
1157
1158         err = zfs_iter_snapspec(zhp, cb->cb_snapspec, snapshot_to_nvl_cb, cb);
1159         if (err == ENOENT)
1160                 err = 0;
1161         if (err != 0)
1162                 goto out;
1163
1164         if (cb->cb_verbose) {
1165                 err = destroy_print_snapshots(zhp, cb);
1166                 if (err != 0)
1167                         goto out;
1168         }
1169
1170         if (cb->cb_recurse)
1171                 err = zfs_iter_filesystems(zhp, gather_snapshots, cb);
1172
1173 out:
1174         zfs_close(zhp);
1175         return (err);
1176 }
1177
1178 static int
1179 destroy_clones(destroy_cbdata_t *cb)
1180 {
1181         nvpair_t *pair;
1182         for (pair = nvlist_next_nvpair(cb->cb_nvl, NULL);
1183             pair != NULL;
1184             pair = nvlist_next_nvpair(cb->cb_nvl, pair)) {
1185                 zfs_handle_t *zhp = zfs_open(g_zfs, nvpair_name(pair),
1186                     ZFS_TYPE_SNAPSHOT);
1187                 if (zhp != NULL) {
1188                         boolean_t defer = cb->cb_defer_destroy;
1189                         int err;
1190
1191                         /*
1192                          * We can't defer destroy non-snapshots, so set it to
1193                          * false while destroying the clones.
1194                          */
1195                         cb->cb_defer_destroy = B_FALSE;
1196                         err = zfs_iter_dependents(zhp, B_FALSE,
1197                             destroy_callback, cb);
1198                         cb->cb_defer_destroy = defer;
1199                         zfs_close(zhp);
1200                         if (err != 0)
1201                                 return (err);
1202                 }
1203         }
1204         return (0);
1205 }
1206
1207 static int
1208 zfs_do_destroy(int argc, char **argv)
1209 {
1210         destroy_cbdata_t cb = { 0 };
1211         int rv = 0;
1212         int err = 0;
1213         int c;
1214         zfs_handle_t *zhp = NULL;
1215         char *at, *pound;
1216         zfs_type_t type = ZFS_TYPE_DATASET;
1217
1218         /* check options */
1219         while ((c = getopt(argc, argv, "vpndfrR")) != -1) {
1220                 switch (c) {
1221                 case 'v':
1222                         cb.cb_verbose = B_TRUE;
1223                         break;
1224                 case 'p':
1225                         cb.cb_verbose = B_TRUE;
1226                         cb.cb_parsable = B_TRUE;
1227                         break;
1228                 case 'n':
1229                         cb.cb_dryrun = B_TRUE;
1230                         break;
1231                 case 'd':
1232                         cb.cb_defer_destroy = B_TRUE;
1233                         type = ZFS_TYPE_SNAPSHOT;
1234                         break;
1235                 case 'f':
1236                         cb.cb_force = B_TRUE;
1237                         break;
1238                 case 'r':
1239                         cb.cb_recurse = B_TRUE;
1240                         break;
1241                 case 'R':
1242                         cb.cb_recurse = B_TRUE;
1243                         cb.cb_doclones = B_TRUE;
1244                         break;
1245                 case '?':
1246                 default:
1247                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1248                             optopt);
1249                         usage(B_FALSE);
1250                 }
1251         }
1252
1253         argc -= optind;
1254         argv += optind;
1255
1256         /* check number of arguments */
1257         if (argc == 0) {
1258                 (void) fprintf(stderr, gettext("missing dataset argument\n"));
1259                 usage(B_FALSE);
1260         }
1261         if (argc > 1) {
1262                 (void) fprintf(stderr, gettext("too many arguments\n"));
1263                 usage(B_FALSE);
1264         }
1265
1266         at = strchr(argv[0], '@');
1267         pound = strchr(argv[0], '#');
1268         if (at != NULL) {
1269
1270                 /* Build the list of snaps to destroy in cb_nvl. */
1271                 cb.cb_nvl = fnvlist_alloc();
1272
1273                 *at = '\0';
1274                 zhp = zfs_open(g_zfs, argv[0],
1275                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
1276                 if (zhp == NULL)
1277                         return (1);
1278
1279                 cb.cb_snapspec = at + 1;
1280                 if (gather_snapshots(zfs_handle_dup(zhp), &cb) != 0 ||
1281                     cb.cb_error) {
1282                         rv = 1;
1283                         goto out;
1284                 }
1285
1286                 if (nvlist_empty(cb.cb_nvl)) {
1287                         (void) fprintf(stderr, gettext("could not find any "
1288                             "snapshots to destroy; check snapshot names.\n"));
1289                         rv = 1;
1290                         goto out;
1291                 }
1292
1293                 if (cb.cb_verbose) {
1294                         char buf[16];
1295                         zfs_nicenum(cb.cb_snapused, buf, sizeof (buf));
1296                         if (cb.cb_parsable) {
1297                                 (void) printf("reclaim\t%llu\n",
1298                                     (u_longlong_t)cb.cb_snapused);
1299                         } else if (cb.cb_dryrun) {
1300                                 (void) printf(gettext("would reclaim %s\n"),
1301                                     buf);
1302                         } else {
1303                                 (void) printf(gettext("will reclaim %s\n"),
1304                                     buf);
1305                         }
1306                 }
1307
1308                 if (!cb.cb_dryrun) {
1309                         if (cb.cb_doclones) {
1310                                 cb.cb_batchedsnaps = fnvlist_alloc();
1311                                 err = destroy_clones(&cb);
1312                                 if (err == 0) {
1313                                         err = zfs_destroy_snaps_nvl(g_zfs,
1314                                             cb.cb_batchedsnaps, B_FALSE);
1315                                 }
1316                                 if (err != 0) {
1317                                         rv = 1;
1318                                         goto out;
1319                                 }
1320                         }
1321                         if (err == 0) {
1322                                 err = zfs_destroy_snaps_nvl(g_zfs, cb.cb_nvl,
1323                                     cb.cb_defer_destroy);
1324                         }
1325                 }
1326
1327                 if (err != 0)
1328                         rv = 1;
1329         } else if (pound != NULL) {
1330                 int err;
1331                 nvlist_t *nvl;
1332
1333                 if (cb.cb_dryrun) {
1334                         (void) fprintf(stderr,
1335                             "dryrun is not supported with bookmark\n");
1336                         return (-1);
1337                 }
1338
1339                 if (cb.cb_defer_destroy) {
1340                         (void) fprintf(stderr,
1341                             "defer destroy is not supported with bookmark\n");
1342                         return (-1);
1343                 }
1344
1345                 if (cb.cb_recurse) {
1346                         (void) fprintf(stderr,
1347                             "recursive is not supported with bookmark\n");
1348                         return (-1);
1349                 }
1350
1351                 if (!zfs_bookmark_exists(argv[0])) {
1352                         (void) fprintf(stderr, gettext("bookmark '%s' "
1353                             "does not exist.\n"), argv[0]);
1354                         return (1);
1355                 }
1356
1357                 nvl = fnvlist_alloc();
1358                 fnvlist_add_boolean(nvl, argv[0]);
1359
1360                 err = lzc_destroy_bookmarks(nvl, NULL);
1361                 if (err != 0) {
1362                         (void) zfs_standard_error(g_zfs, err,
1363                             "cannot destroy bookmark");
1364                 }
1365
1366                 nvlist_free(cb.cb_nvl);
1367
1368                 return (err);
1369         } else {
1370                 /* Open the given dataset */
1371                 if ((zhp = zfs_open(g_zfs, argv[0], type)) == NULL)
1372                         return (1);
1373
1374                 cb.cb_target = zhp;
1375
1376                 /*
1377                  * Perform an explicit check for pools before going any further.
1378                  */
1379                 if (!cb.cb_recurse && strchr(zfs_get_name(zhp), '/') == NULL &&
1380                     zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
1381                         (void) fprintf(stderr, gettext("cannot destroy '%s': "
1382                             "operation does not apply to pools\n"),
1383                             zfs_get_name(zhp));
1384                         (void) fprintf(stderr, gettext("use 'zfs destroy -r "
1385                             "%s' to destroy all datasets in the pool\n"),
1386                             zfs_get_name(zhp));
1387                         (void) fprintf(stderr, gettext("use 'zpool destroy %s' "
1388                             "to destroy the pool itself\n"), zfs_get_name(zhp));
1389                         rv = 1;
1390                         goto out;
1391                 }
1392
1393                 /*
1394                  * Check for any dependents and/or clones.
1395                  */
1396                 cb.cb_first = B_TRUE;
1397                 if (!cb.cb_doclones &&
1398                     zfs_iter_dependents(zhp, B_TRUE, destroy_check_dependent,
1399                     &cb) != 0) {
1400                         rv = 1;
1401                         goto out;
1402                 }
1403
1404                 if (cb.cb_error) {
1405                         rv = 1;
1406                         goto out;
1407                 }
1408
1409                 cb.cb_batchedsnaps = fnvlist_alloc();
1410                 if (zfs_iter_dependents(zhp, B_FALSE, destroy_callback,
1411                     &cb) != 0) {
1412                         rv = 1;
1413                         goto out;
1414                 }
1415
1416                 /*
1417                  * Do the real thing.  The callback will close the
1418                  * handle regardless of whether it succeeds or not.
1419                  */
1420                 err = destroy_callback(zhp, &cb);
1421                 zhp = NULL;
1422                 if (err == 0) {
1423                         err = zfs_destroy_snaps_nvl(g_zfs,
1424                             cb.cb_batchedsnaps, cb.cb_defer_destroy);
1425                 }
1426                 if (err != 0)
1427                         rv = 1;
1428         }
1429
1430 out:
1431         fnvlist_free(cb.cb_batchedsnaps);
1432         fnvlist_free(cb.cb_nvl);
1433         if (zhp != NULL)
1434                 zfs_close(zhp);
1435         return (rv);
1436 }
1437
1438 static boolean_t
1439 is_recvd_column(zprop_get_cbdata_t *cbp)
1440 {
1441         int i;
1442         zfs_get_column_t col;
1443
1444         for (i = 0; i < ZFS_GET_NCOLS &&
1445             (col = cbp->cb_columns[i]) != GET_COL_NONE; i++)
1446                 if (col == GET_COL_RECVD)
1447                         return (B_TRUE);
1448         return (B_FALSE);
1449 }
1450
1451 /*
1452  * zfs get [-rHp] [-o all | field[,field]...] [-s source[,source]...]
1453  *      < all | property[,property]... > < fs | snap | vol > ...
1454  *
1455  *      -r      recurse over any child datasets
1456  *      -H      scripted mode.  Headers are stripped, and fields are separated
1457  *              by tabs instead of spaces.
1458  *      -o      Set of fields to display.  One of "name,property,value,
1459  *              received,source". Default is "name,property,value,source".
1460  *              "all" is an alias for all five.
1461  *      -s      Set of sources to allow.  One of
1462  *              "local,default,inherited,received,temporary,none".  Default is
1463  *              all six.
1464  *      -p      Display values in parsable (literal) format.
1465  *
1466  *  Prints properties for the given datasets.  The user can control which
1467  *  columns to display as well as which property types to allow.
1468  */
1469
1470 /*
1471  * Invoked to display the properties for a single dataset.
1472  */
1473 static int
1474 get_callback(zfs_handle_t *zhp, void *data)
1475 {
1476         char buf[ZFS_MAXPROPLEN];
1477         char rbuf[ZFS_MAXPROPLEN];
1478         zprop_source_t sourcetype;
1479         char source[ZFS_MAXNAMELEN];
1480         zprop_get_cbdata_t *cbp = data;
1481         nvlist_t *user_props = zfs_get_user_props(zhp);
1482         zprop_list_t *pl = cbp->cb_proplist;
1483         nvlist_t *propval;
1484         char *strval;
1485         char *sourceval;
1486         boolean_t received = is_recvd_column(cbp);
1487
1488         for (; pl != NULL; pl = pl->pl_next) {
1489                 char *recvdval = NULL;
1490                 /*
1491                  * Skip the special fake placeholder.  This will also skip over
1492                  * the name property when 'all' is specified.
1493                  */
1494                 if (pl->pl_prop == ZFS_PROP_NAME &&
1495                     pl == cbp->cb_proplist)
1496                         continue;
1497
1498                 if (pl->pl_prop != ZPROP_INVAL) {
1499                         if (zfs_prop_get(zhp, pl->pl_prop, buf,
1500                             sizeof (buf), &sourcetype, source,
1501                             sizeof (source),
1502                             cbp->cb_literal) != 0) {
1503                                 if (pl->pl_all)
1504                                         continue;
1505                                 if (!zfs_prop_valid_for_type(pl->pl_prop,
1506                                     ZFS_TYPE_DATASET, B_FALSE)) {
1507                                         (void) fprintf(stderr,
1508                                             gettext("No such property '%s'\n"),
1509                                             zfs_prop_to_name(pl->pl_prop));
1510                                         continue;
1511                                 }
1512                                 sourcetype = ZPROP_SRC_NONE;
1513                                 (void) strlcpy(buf, "-", sizeof (buf));
1514                         }
1515
1516                         if (received && (zfs_prop_get_recvd(zhp,
1517                             zfs_prop_to_name(pl->pl_prop), rbuf, sizeof (rbuf),
1518                             cbp->cb_literal) == 0))
1519                                 recvdval = rbuf;
1520
1521                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1522                             zfs_prop_to_name(pl->pl_prop),
1523                             buf, sourcetype, source, recvdval);
1524                 } else if (zfs_prop_userquota(pl->pl_user_prop)) {
1525                         sourcetype = ZPROP_SRC_LOCAL;
1526
1527                         if (zfs_prop_get_userquota(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 if (zfs_prop_written(pl->pl_user_prop)) {
1536                         sourcetype = ZPROP_SRC_LOCAL;
1537
1538                         if (zfs_prop_get_written(zhp, pl->pl_user_prop,
1539                             buf, sizeof (buf), cbp->cb_literal) != 0) {
1540                                 sourcetype = ZPROP_SRC_NONE;
1541                                 (void) strlcpy(buf, "-", sizeof (buf));
1542                         }
1543
1544                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1545                             pl->pl_user_prop, buf, sourcetype, source, NULL);
1546                 } else {
1547                         if (nvlist_lookup_nvlist(user_props,
1548                             pl->pl_user_prop, &propval) != 0) {
1549                                 if (pl->pl_all)
1550                                         continue;
1551                                 sourcetype = ZPROP_SRC_NONE;
1552                                 strval = "-";
1553                         } else {
1554                                 verify(nvlist_lookup_string(propval,
1555                                     ZPROP_VALUE, &strval) == 0);
1556                                 verify(nvlist_lookup_string(propval,
1557                                     ZPROP_SOURCE, &sourceval) == 0);
1558
1559                                 if (strcmp(sourceval,
1560                                     zfs_get_name(zhp)) == 0) {
1561                                         sourcetype = ZPROP_SRC_LOCAL;
1562                                 } else if (strcmp(sourceval,
1563                                     ZPROP_SOURCE_VAL_RECVD) == 0) {
1564                                         sourcetype = ZPROP_SRC_RECEIVED;
1565                                 } else {
1566                                         sourcetype = ZPROP_SRC_INHERITED;
1567                                         (void) strlcpy(source,
1568                                             sourceval, sizeof (source));
1569                                 }
1570                         }
1571
1572                         if (received && (zfs_prop_get_recvd(zhp,
1573                             pl->pl_user_prop, rbuf, sizeof (rbuf),
1574                             cbp->cb_literal) == 0))
1575                                 recvdval = rbuf;
1576
1577                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1578                             pl->pl_user_prop, strval, sourcetype,
1579                             source, recvdval);
1580                 }
1581         }
1582
1583         return (0);
1584 }
1585
1586 static int
1587 zfs_do_get(int argc, char **argv)
1588 {
1589         zprop_get_cbdata_t cb = { 0 };
1590         int i, c, flags = ZFS_ITER_ARGS_CAN_BE_PATHS;
1591         int types = ZFS_TYPE_DATASET;
1592         char *value, *fields;
1593         int ret = 0;
1594         int limit = 0;
1595         zprop_list_t fake_name = { 0 };
1596
1597         /*
1598          * Set up default columns and sources.
1599          */
1600         cb.cb_sources = ZPROP_SRC_ALL;
1601         cb.cb_columns[0] = GET_COL_NAME;
1602         cb.cb_columns[1] = GET_COL_PROPERTY;
1603         cb.cb_columns[2] = GET_COL_VALUE;
1604         cb.cb_columns[3] = GET_COL_SOURCE;
1605         cb.cb_type = ZFS_TYPE_DATASET;
1606
1607         /* check options */
1608         while ((c = getopt(argc, argv, ":d:o:s:rt:Hp")) != -1) {
1609                 switch (c) {
1610                 case 'p':
1611                         cb.cb_literal = B_TRUE;
1612                         break;
1613                 case 'd':
1614                         limit = parse_depth(optarg, &flags);
1615                         break;
1616                 case 'r':
1617                         flags |= ZFS_ITER_RECURSE;
1618                         break;
1619                 case 'H':
1620                         cb.cb_scripted = B_TRUE;
1621                         break;
1622                 case ':':
1623                         (void) fprintf(stderr, gettext("missing argument for "
1624                             "'%c' option\n"), optopt);
1625                         usage(B_FALSE);
1626                         break;
1627                 case 'o':
1628                         /*
1629                          * Process the set of columns to display.  We zero out
1630                          * the structure to give us a blank slate.
1631                          */
1632                         bzero(&cb.cb_columns, sizeof (cb.cb_columns));
1633                         i = 0;
1634                         while (*optarg != '\0') {
1635                                 static char *col_subopts[] =
1636                                     { "name", "property", "value", "received",
1637                                     "source", "all", NULL };
1638
1639                                 if (i == ZFS_GET_NCOLS) {
1640                                         (void) fprintf(stderr, gettext("too "
1641                                             "many fields given to -o "
1642                                             "option\n"));
1643                                         usage(B_FALSE);
1644                                 }
1645
1646                                 switch (getsubopt(&optarg, col_subopts,
1647                                     &value)) {
1648                                 case 0:
1649                                         cb.cb_columns[i++] = GET_COL_NAME;
1650                                         break;
1651                                 case 1:
1652                                         cb.cb_columns[i++] = GET_COL_PROPERTY;
1653                                         break;
1654                                 case 2:
1655                                         cb.cb_columns[i++] = GET_COL_VALUE;
1656                                         break;
1657                                 case 3:
1658                                         cb.cb_columns[i++] = GET_COL_RECVD;
1659                                         flags |= ZFS_ITER_RECVD_PROPS;
1660                                         break;
1661                                 case 4:
1662                                         cb.cb_columns[i++] = GET_COL_SOURCE;
1663                                         break;
1664                                 case 5:
1665                                         if (i > 0) {
1666                                                 (void) fprintf(stderr,
1667                                                     gettext("\"all\" conflicts "
1668                                                     "with specific fields "
1669                                                     "given to -o option\n"));
1670                                                 usage(B_FALSE);
1671                                         }
1672                                         cb.cb_columns[0] = GET_COL_NAME;
1673                                         cb.cb_columns[1] = GET_COL_PROPERTY;
1674                                         cb.cb_columns[2] = GET_COL_VALUE;
1675                                         cb.cb_columns[3] = GET_COL_RECVD;
1676                                         cb.cb_columns[4] = GET_COL_SOURCE;
1677                                         flags |= ZFS_ITER_RECVD_PROPS;
1678                                         i = ZFS_GET_NCOLS;
1679                                         break;
1680                                 default:
1681                                         (void) fprintf(stderr,
1682                                             gettext("invalid column name "
1683                                             "'%s'\n"), value);
1684                                         usage(B_FALSE);
1685                                 }
1686                         }
1687                         break;
1688
1689                 case 's':
1690                         cb.cb_sources = 0;
1691                         while (*optarg != '\0') {
1692                                 static char *source_subopts[] = {
1693                                         "local", "default", "inherited",
1694                                         "received", "temporary", "none",
1695                                         NULL };
1696
1697                                 switch (getsubopt(&optarg, source_subopts,
1698                                     &value)) {
1699                                 case 0:
1700                                         cb.cb_sources |= ZPROP_SRC_LOCAL;
1701                                         break;
1702                                 case 1:
1703                                         cb.cb_sources |= ZPROP_SRC_DEFAULT;
1704                                         break;
1705                                 case 2:
1706                                         cb.cb_sources |= ZPROP_SRC_INHERITED;
1707                                         break;
1708                                 case 3:
1709                                         cb.cb_sources |= ZPROP_SRC_RECEIVED;
1710                                         break;
1711                                 case 4:
1712                                         cb.cb_sources |= ZPROP_SRC_TEMPORARY;
1713                                         break;
1714                                 case 5:
1715                                         cb.cb_sources |= ZPROP_SRC_NONE;
1716                                         break;
1717                                 default:
1718                                         (void) fprintf(stderr,
1719                                             gettext("invalid source "
1720                                             "'%s'\n"), value);
1721                                         usage(B_FALSE);
1722                                 }
1723                         }
1724                         break;
1725
1726                 case 't':
1727                         types = 0;
1728                         flags &= ~ZFS_ITER_PROP_LISTSNAPS;
1729                         while (*optarg != '\0') {
1730                                 static char *type_subopts[] = { "filesystem",
1731                                     "volume", "snapshot", "bookmark",
1732                                     "all", NULL };
1733
1734                                 switch (getsubopt(&optarg, type_subopts,
1735                                     &value)) {
1736                                 case 0:
1737                                         types |= ZFS_TYPE_FILESYSTEM;
1738                                         break;
1739                                 case 1:
1740                                         types |= ZFS_TYPE_VOLUME;
1741                                         break;
1742                                 case 2:
1743                                         types |= ZFS_TYPE_SNAPSHOT;
1744                                         break;
1745                                 case 3:
1746                                         types |= ZFS_TYPE_BOOKMARK;
1747                                         break;
1748                                 case 4:
1749                                         types = ZFS_TYPE_DATASET |
1750                                             ZFS_TYPE_BOOKMARK;
1751                                         break;
1752
1753                                 default:
1754                                         (void) fprintf(stderr,
1755                                             gettext("invalid type '%s'\n"),
1756                                             value);
1757                                         usage(B_FALSE);
1758                                 }
1759                         }
1760                         break;
1761
1762                 case '?':
1763                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1764                             optopt);
1765                         usage(B_FALSE);
1766                 }
1767         }
1768
1769         argc -= optind;
1770         argv += optind;
1771
1772         if (argc < 1) {
1773                 (void) fprintf(stderr, gettext("missing property "
1774                     "argument\n"));
1775                 usage(B_FALSE);
1776         }
1777
1778         fields = argv[0];
1779
1780         if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
1781             != 0)
1782                 usage(B_FALSE);
1783
1784         argc--;
1785         argv++;
1786
1787         /*
1788          * As part of zfs_expand_proplist(), we keep track of the maximum column
1789          * width for each property.  For the 'NAME' (and 'SOURCE') columns, we
1790          * need to know the maximum name length.  However, the user likely did
1791          * not specify 'name' as one of the properties to fetch, so we need to
1792          * make sure we always include at least this property for
1793          * print_get_headers() to work properly.
1794          */
1795         if (cb.cb_proplist != NULL) {
1796                 fake_name.pl_prop = ZFS_PROP_NAME;
1797                 fake_name.pl_width = strlen(gettext("NAME"));
1798                 fake_name.pl_next = cb.cb_proplist;
1799                 cb.cb_proplist = &fake_name;
1800         }
1801
1802         cb.cb_first = B_TRUE;
1803
1804         /* run for each object */
1805         ret = zfs_for_each(argc, argv, flags, types, NULL,
1806             &cb.cb_proplist, limit, get_callback, &cb);
1807
1808         if (cb.cb_proplist == &fake_name)
1809                 zprop_free_list(fake_name.pl_next);
1810         else
1811                 zprop_free_list(cb.cb_proplist);
1812
1813         return (ret);
1814 }
1815
1816 /*
1817  * inherit [-rS] <property> <fs|vol> ...
1818  *
1819  *      -r      Recurse over all children
1820  *      -S      Revert to received value, if any
1821  *
1822  * For each dataset specified on the command line, inherit the given property
1823  * from its parent.  Inheriting a property at the pool level will cause it to
1824  * use the default value.  The '-r' flag will recurse over all children, and is
1825  * useful for setting a property on a hierarchy-wide basis, regardless of any
1826  * local modifications for each dataset.
1827  */
1828
1829 typedef struct inherit_cbdata {
1830         const char *cb_propname;
1831         boolean_t cb_received;
1832 } inherit_cbdata_t;
1833
1834 static int
1835 inherit_recurse_cb(zfs_handle_t *zhp, void *data)
1836 {
1837         inherit_cbdata_t *cb = data;
1838         zfs_prop_t prop = zfs_name_to_prop(cb->cb_propname);
1839
1840         /*
1841          * If we're doing it recursively, then ignore properties that
1842          * are not valid for this type of dataset.
1843          */
1844         if (prop != ZPROP_INVAL &&
1845             !zfs_prop_valid_for_type(prop, zfs_get_type(zhp), B_FALSE))
1846                 return (0);
1847
1848         return (zfs_prop_inherit(zhp, cb->cb_propname, cb->cb_received) != 0);
1849 }
1850
1851 static int
1852 inherit_cb(zfs_handle_t *zhp, void *data)
1853 {
1854         inherit_cbdata_t *cb = data;
1855
1856         return (zfs_prop_inherit(zhp, cb->cb_propname, cb->cb_received) != 0);
1857 }
1858
1859 static int
1860 zfs_do_inherit(int argc, char **argv)
1861 {
1862         int c;
1863         zfs_prop_t prop;
1864         inherit_cbdata_t cb = { 0 };
1865         char *propname;
1866         int ret = 0;
1867         int flags = 0;
1868         boolean_t received = B_FALSE;
1869
1870         /* check options */
1871         while ((c = getopt(argc, argv, "rS")) != -1) {
1872                 switch (c) {
1873                 case 'r':
1874                         flags |= ZFS_ITER_RECURSE;
1875                         break;
1876                 case 'S':
1877                         received = B_TRUE;
1878                         break;
1879                 case '?':
1880                 default:
1881                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1882                             optopt);
1883                         usage(B_FALSE);
1884                 }
1885         }
1886
1887         argc -= optind;
1888         argv += optind;
1889
1890         /* check number of arguments */
1891         if (argc < 1) {
1892                 (void) fprintf(stderr, gettext("missing property argument\n"));
1893                 usage(B_FALSE);
1894         }
1895         if (argc < 2) {
1896                 (void) fprintf(stderr, gettext("missing dataset argument\n"));
1897                 usage(B_FALSE);
1898         }
1899
1900         propname = argv[0];
1901         argc--;
1902         argv++;
1903
1904         if ((prop = zfs_name_to_prop(propname)) != ZPROP_INVAL) {
1905                 if (zfs_prop_readonly(prop)) {
1906                         (void) fprintf(stderr, gettext(
1907                             "%s property is read-only\n"),
1908                             propname);
1909                         return (1);
1910                 }
1911                 if (!zfs_prop_inheritable(prop) && !received) {
1912                         (void) fprintf(stderr, gettext("'%s' property cannot "
1913                             "be inherited\n"), propname);
1914                         if (prop == ZFS_PROP_QUOTA ||
1915                             prop == ZFS_PROP_RESERVATION ||
1916                             prop == ZFS_PROP_REFQUOTA ||
1917                             prop == ZFS_PROP_REFRESERVATION) {
1918                                 (void) fprintf(stderr, gettext("use 'zfs set "
1919                                     "%s=none' to clear\n"), propname);
1920                                 (void) fprintf(stderr, gettext("use 'zfs "
1921                                     "inherit -S %s' to revert to received "
1922                                     "value\n"), propname);
1923                         }
1924                         return (1);
1925                 }
1926                 if (received && (prop == ZFS_PROP_VOLSIZE ||
1927                     prop == ZFS_PROP_VERSION)) {
1928                         (void) fprintf(stderr, gettext("'%s' property cannot "
1929                             "be reverted to a received value\n"), propname);
1930                         return (1);
1931                 }
1932         } else if (!zfs_prop_user(propname)) {
1933                 (void) fprintf(stderr, gettext("invalid property '%s'\n"),
1934                     propname);
1935                 usage(B_FALSE);
1936         }
1937
1938         cb.cb_propname = propname;
1939         cb.cb_received = received;
1940
1941         if (flags & ZFS_ITER_RECURSE) {
1942                 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
1943                     NULL, NULL, 0, inherit_recurse_cb, &cb);
1944         } else {
1945                 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
1946                     NULL, NULL, 0, inherit_cb, &cb);
1947         }
1948
1949         return (ret);
1950 }
1951
1952 typedef struct upgrade_cbdata {
1953         uint64_t cb_numupgraded;
1954         uint64_t cb_numsamegraded;
1955         uint64_t cb_numfailed;
1956         uint64_t cb_version;
1957         boolean_t cb_newer;
1958         boolean_t cb_foundone;
1959         char cb_lastfs[ZFS_MAXNAMELEN];
1960 } upgrade_cbdata_t;
1961
1962 static int
1963 same_pool(zfs_handle_t *zhp, const char *name)
1964 {
1965         int len1 = strcspn(name, "/@");
1966         const char *zhname = zfs_get_name(zhp);
1967         int len2 = strcspn(zhname, "/@");
1968
1969         if (len1 != len2)
1970                 return (B_FALSE);
1971         return (strncmp(name, zhname, len1) == 0);
1972 }
1973
1974 static int
1975 upgrade_list_callback(zfs_handle_t *zhp, void *data)
1976 {
1977         upgrade_cbdata_t *cb = data;
1978         int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
1979
1980         /* list if it's old/new */
1981         if ((!cb->cb_newer && version < ZPL_VERSION) ||
1982             (cb->cb_newer && version > ZPL_VERSION)) {
1983                 char *str;
1984                 if (cb->cb_newer) {
1985                         str = gettext("The following filesystems are "
1986                             "formatted using a newer software version and\n"
1987                             "cannot be accessed on the current system.\n\n");
1988                 } else {
1989                         str = gettext("The following filesystems are "
1990                             "out of date, and can be upgraded.  After being\n"
1991                             "upgraded, these filesystems (and any 'zfs send' "
1992                             "streams generated from\n"
1993                             "subsequent snapshots) will no longer be "
1994                             "accessible by older software versions.\n\n");
1995                 }
1996
1997                 if (!cb->cb_foundone) {
1998                         (void) puts(str);
1999                         (void) printf(gettext("VER  FILESYSTEM\n"));
2000                         (void) printf(gettext("---  ------------\n"));
2001                         cb->cb_foundone = B_TRUE;
2002                 }
2003
2004                 (void) printf("%2u   %s\n", version, zfs_get_name(zhp));
2005         }
2006
2007         return (0);
2008 }
2009
2010 static int
2011 upgrade_set_callback(zfs_handle_t *zhp, void *data)
2012 {
2013         upgrade_cbdata_t *cb = data;
2014         int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
2015         int needed_spa_version;
2016         int spa_version;
2017
2018         if (zfs_spa_version(zhp, &spa_version) < 0)
2019                 return (-1);
2020
2021         needed_spa_version = zfs_spa_version_map(cb->cb_version);
2022
2023         if (needed_spa_version < 0)
2024                 return (-1);
2025
2026         if (spa_version < needed_spa_version) {
2027                 /* can't upgrade */
2028                 (void) printf(gettext("%s: can not be "
2029                     "upgraded; the pool version needs to first "
2030                     "be upgraded\nto version %d\n\n"),
2031                     zfs_get_name(zhp), needed_spa_version);
2032                 cb->cb_numfailed++;
2033                 return (0);
2034         }
2035
2036         /* upgrade */
2037         if (version < cb->cb_version) {
2038                 char verstr[16];
2039                 (void) snprintf(verstr, sizeof (verstr),
2040                     "%llu", (u_longlong_t)cb->cb_version);
2041                 if (cb->cb_lastfs[0] && !same_pool(zhp, cb->cb_lastfs)) {
2042                         /*
2043                          * If they did "zfs upgrade -a", then we could
2044                          * be doing ioctls to different pools.  We need
2045                          * to log this history once to each pool, and bypass
2046                          * the normal history logging that happens in main().
2047                          */
2048                         (void) zpool_log_history(g_zfs, history_str);
2049                         log_history = B_FALSE;
2050                 }
2051                 if (zfs_prop_set(zhp, "version", verstr) == 0)
2052                         cb->cb_numupgraded++;
2053                 else
2054                         cb->cb_numfailed++;
2055                 (void) strcpy(cb->cb_lastfs, zfs_get_name(zhp));
2056         } else if (version > cb->cb_version) {
2057                 /* can't downgrade */
2058                 (void) printf(gettext("%s: can not be downgraded; "
2059                     "it is already at version %u\n"),
2060                     zfs_get_name(zhp), version);
2061                 cb->cb_numfailed++;
2062         } else {
2063                 cb->cb_numsamegraded++;
2064         }
2065         return (0);
2066 }
2067
2068 /*
2069  * zfs upgrade
2070  * zfs upgrade -v
2071  * zfs upgrade [-r] [-V <version>] <-a | filesystem>
2072  */
2073 static int
2074 zfs_do_upgrade(int argc, char **argv)
2075 {
2076         boolean_t all = B_FALSE;
2077         boolean_t showversions = B_FALSE;
2078         int ret = 0;
2079         upgrade_cbdata_t cb = { 0 };
2080         signed char c;
2081         int flags = ZFS_ITER_ARGS_CAN_BE_PATHS;
2082
2083         /* check options */
2084         while ((c = getopt(argc, argv, "rvV:a")) != -1) {
2085                 switch (c) {
2086                 case 'r':
2087                         flags |= ZFS_ITER_RECURSE;
2088                         break;
2089                 case 'v':
2090                         showversions = B_TRUE;
2091                         break;
2092                 case 'V':
2093                         if (zfs_prop_string_to_index(ZFS_PROP_VERSION,
2094                             optarg, &cb.cb_version) != 0) {
2095                                 (void) fprintf(stderr,
2096                                     gettext("invalid version %s\n"), optarg);
2097                                 usage(B_FALSE);
2098                         }
2099                         break;
2100                 case 'a':
2101                         all = B_TRUE;
2102                         break;
2103                 case '?':
2104                 default:
2105                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2106                             optopt);
2107                         usage(B_FALSE);
2108                 }
2109         }
2110
2111         argc -= optind;
2112         argv += optind;
2113
2114         if ((!all && !argc) && ((flags & ZFS_ITER_RECURSE) | cb.cb_version))
2115                 usage(B_FALSE);
2116         if (showversions && (flags & ZFS_ITER_RECURSE || all ||
2117             cb.cb_version || argc))
2118                 usage(B_FALSE);
2119         if ((all || argc) && (showversions))
2120                 usage(B_FALSE);
2121         if (all && argc)
2122                 usage(B_FALSE);
2123
2124         if (showversions) {
2125                 /* Show info on available versions. */
2126                 (void) printf(gettext("The following filesystem versions are "
2127                     "supported:\n\n"));
2128                 (void) printf(gettext("VER  DESCRIPTION\n"));
2129                 (void) printf("---  -----------------------------------------"
2130                     "---------------\n");
2131                 (void) printf(gettext(" 1   Initial ZFS filesystem version\n"));
2132                 (void) printf(gettext(" 2   Enhanced directory entries\n"));
2133                 (void) printf(gettext(" 3   Case insensitive and filesystem "
2134                     "user identifier (FUID)\n"));
2135                 (void) printf(gettext(" 4   userquota, groupquota "
2136                     "properties\n"));
2137                 (void) printf(gettext(" 5   System attributes\n"));
2138                 (void) printf(gettext("\nFor more information on a particular "
2139                     "version, including supported releases,\n"));
2140                 (void) printf("see the ZFS Administration Guide.\n\n");
2141                 ret = 0;
2142         } else if (argc || all) {
2143                 /* Upgrade filesystems */
2144                 if (cb.cb_version == 0)
2145                         cb.cb_version = ZPL_VERSION;
2146                 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_FILESYSTEM,
2147                     NULL, NULL, 0, upgrade_set_callback, &cb);
2148                 (void) printf(gettext("%llu filesystems upgraded\n"),
2149                     (u_longlong_t)cb.cb_numupgraded);
2150                 if (cb.cb_numsamegraded) {
2151                         (void) printf(gettext("%llu filesystems already at "
2152                             "this version\n"),
2153                             (u_longlong_t)cb.cb_numsamegraded);
2154                 }
2155                 if (cb.cb_numfailed != 0)
2156                         ret = 1;
2157         } else {
2158                 /* List old-version filesytems */
2159                 boolean_t found;
2160                 (void) printf(gettext("This system is currently running "
2161                     "ZFS filesystem version %llu.\n\n"), ZPL_VERSION);
2162
2163                 flags |= ZFS_ITER_RECURSE;
2164                 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
2165                     NULL, NULL, 0, upgrade_list_callback, &cb);
2166
2167                 found = cb.cb_foundone;
2168                 cb.cb_foundone = B_FALSE;
2169                 cb.cb_newer = B_TRUE;
2170
2171                 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
2172                     NULL, NULL, 0, upgrade_list_callback, &cb);
2173
2174                 if (!cb.cb_foundone && !found) {
2175                         (void) printf(gettext("All filesystems are "
2176                             "formatted with the current version.\n"));
2177                 }
2178         }
2179
2180         return (ret);
2181 }
2182
2183 /*
2184  * zfs userspace [-Hinp] [-o field[,...]] [-s field [-s field]...]
2185  *               [-S field [-S field]...] [-t type[,...]] filesystem | snapshot
2186  * zfs groupspace [-Hinp] [-o field[,...]] [-s field [-s field]...]
2187  *                [-S field [-S field]...] [-t type[,...]] filesystem | snapshot
2188  *
2189  *      -H      Scripted mode; elide headers and separate columns by tabs.
2190  *      -i      Translate SID to POSIX ID.
2191  *      -n      Print numeric ID instead of user/group name.
2192  *      -o      Control which fields to display.
2193  *      -p      Use exact (parsable) numeric output.
2194  *      -s      Specify sort columns, descending order.
2195  *      -S      Specify sort columns, ascending order.
2196  *      -t      Control which object types to display.
2197  *
2198  *      Displays space consumed by, and quotas on, each user in the specified
2199  *      filesystem or snapshot.
2200  */
2201
2202 /* us_field_types, us_field_hdr and us_field_names should be kept in sync */
2203 enum us_field_types {
2204         USFIELD_TYPE,
2205         USFIELD_NAME,
2206         USFIELD_USED,
2207         USFIELD_QUOTA
2208 };
2209 static char *us_field_hdr[] = { "TYPE", "NAME", "USED", "QUOTA" };
2210 static char *us_field_names[] = { "type", "name", "used", "quota" };
2211 #define USFIELD_LAST    (sizeof (us_field_names) / sizeof (char *))
2212
2213 #define USTYPE_PSX_GRP  (1 << 0)
2214 #define USTYPE_PSX_USR  (1 << 1)
2215 #define USTYPE_SMB_GRP  (1 << 2)
2216 #define USTYPE_SMB_USR  (1 << 3)
2217 #define USTYPE_ALL      \
2218         (USTYPE_PSX_GRP | USTYPE_PSX_USR | USTYPE_SMB_GRP | USTYPE_SMB_USR)
2219
2220 static int us_type_bits[] = {
2221         USTYPE_PSX_GRP,
2222         USTYPE_PSX_USR,
2223         USTYPE_SMB_GRP,
2224         USTYPE_SMB_USR,
2225         USTYPE_ALL
2226 };
2227 static char *us_type_names[] = { "posixgroup", "posixuser", "smbgroup",
2228         "smbuser", "all" };
2229
2230 typedef struct us_node {
2231         nvlist_t        *usn_nvl;
2232         uu_avl_node_t   usn_avlnode;
2233         uu_list_node_t  usn_listnode;
2234 } us_node_t;
2235
2236 typedef struct us_cbdata {
2237         nvlist_t        **cb_nvlp;
2238         uu_avl_pool_t   *cb_avl_pool;
2239         uu_avl_t        *cb_avl;
2240         boolean_t       cb_numname;
2241         boolean_t       cb_nicenum;
2242         boolean_t       cb_sid2posix;
2243         zfs_userquota_prop_t cb_prop;
2244         zfs_sort_column_t *cb_sortcol;
2245         size_t          cb_width[USFIELD_LAST];
2246 } us_cbdata_t;
2247
2248 static boolean_t us_populated = B_FALSE;
2249
2250 typedef struct {
2251         zfs_sort_column_t *si_sortcol;
2252         boolean_t       si_numname;
2253 } us_sort_info_t;
2254
2255 static int
2256 us_field_index(char *field)
2257 {
2258         int i;
2259
2260         for (i = 0; i < USFIELD_LAST; i++) {
2261                 if (strcmp(field, us_field_names[i]) == 0)
2262                         return (i);
2263         }
2264
2265         return (-1);
2266 }
2267
2268 static int
2269 us_compare(const void *larg, const void *rarg, void *unused)
2270 {
2271         const us_node_t *l = larg;
2272         const us_node_t *r = rarg;
2273         us_sort_info_t *si = (us_sort_info_t *)unused;
2274         zfs_sort_column_t *sortcol = si->si_sortcol;
2275         boolean_t numname = si->si_numname;
2276         nvlist_t *lnvl = l->usn_nvl;
2277         nvlist_t *rnvl = r->usn_nvl;
2278         int rc = 0;
2279         boolean_t lvb, rvb;
2280
2281         for (; sortcol != NULL; sortcol = sortcol->sc_next) {
2282                 char *lvstr = "";
2283                 char *rvstr = "";
2284                 uint32_t lv32 = 0;
2285                 uint32_t rv32 = 0;
2286                 uint64_t lv64 = 0;
2287                 uint64_t rv64 = 0;
2288                 zfs_prop_t prop = sortcol->sc_prop;
2289                 const char *propname = NULL;
2290                 boolean_t reverse = sortcol->sc_reverse;
2291
2292                 switch (prop) {
2293                 case ZFS_PROP_TYPE:
2294                         propname = "type";
2295                         (void) nvlist_lookup_uint32(lnvl, propname, &lv32);
2296                         (void) nvlist_lookup_uint32(rnvl, propname, &rv32);
2297                         if (rv32 != lv32)
2298                                 rc = (rv32 < lv32) ? 1 : -1;
2299                         break;
2300                 case ZFS_PROP_NAME:
2301                         propname = "name";
2302                         if (numname) {
2303 compare_nums:
2304                                 (void) nvlist_lookup_uint64(lnvl, propname,
2305                                     &lv64);
2306                                 (void) nvlist_lookup_uint64(rnvl, propname,
2307                                     &rv64);
2308                                 if (rv64 != lv64)
2309                                         rc = (rv64 < lv64) ? 1 : -1;
2310                         } else {
2311                                 if ((nvlist_lookup_string(lnvl, propname,
2312                                                 &lvstr) == ENOENT) ||
2313                                     (nvlist_lookup_string(rnvl, propname,
2314                                                 &rvstr) == ENOENT)) {
2315                                         goto compare_nums;
2316                                 }
2317                                 rc = strcmp(lvstr, rvstr);
2318                         }
2319                         break;
2320                 case ZFS_PROP_USED:
2321                 case ZFS_PROP_QUOTA:
2322                         if (!us_populated)
2323                                 break;
2324                         if (prop == ZFS_PROP_USED)
2325                                 propname = "used";
2326                         else
2327                                 propname = "quota";
2328                         (void) nvlist_lookup_uint64(lnvl, propname, &lv64);
2329                         (void) nvlist_lookup_uint64(rnvl, propname, &rv64);
2330                         if (rv64 != lv64)
2331                                 rc = (rv64 < lv64) ? 1 : -1;
2332                         break;
2333                 default:
2334                         break;
2335                 }
2336
2337                 if (rc != 0) {
2338                         if (rc < 0)
2339                                 return (reverse ? 1 : -1);
2340                         else
2341                                 return (reverse ? -1 : 1);
2342                 }
2343         }
2344
2345         /*
2346          * If entries still seem to be the same, check if they are of the same
2347          * type (smbentity is added only if we are doing SID to POSIX ID
2348          * translation where we can have duplicate type/name combinations).
2349          */
2350         if (nvlist_lookup_boolean_value(lnvl, "smbentity", &lvb) == 0 &&
2351             nvlist_lookup_boolean_value(rnvl, "smbentity", &rvb) == 0 &&
2352             lvb != rvb)
2353                 return (lvb < rvb ? -1 : 1);
2354
2355         return (0);
2356 }
2357
2358 static inline const char *
2359 us_type2str(unsigned field_type)
2360 {
2361         switch (field_type) {
2362         case USTYPE_PSX_USR:
2363                 return ("POSIX User");
2364         case USTYPE_PSX_GRP:
2365                 return ("POSIX Group");
2366         case USTYPE_SMB_USR:
2367                 return ("SMB User");
2368         case USTYPE_SMB_GRP:
2369                 return ("SMB Group");
2370         default:
2371                 return ("Undefined");
2372         }
2373 }
2374
2375 static int
2376 userspace_cb(void *arg, const char *domain, uid_t rid, uint64_t space)
2377 {
2378         us_cbdata_t *cb = (us_cbdata_t *)arg;
2379         zfs_userquota_prop_t prop = cb->cb_prop;
2380         char *name = NULL;
2381         char *propname;
2382         char sizebuf[32];
2383         us_node_t *node;
2384         uu_avl_pool_t *avl_pool = cb->cb_avl_pool;
2385         uu_avl_t *avl = cb->cb_avl;
2386         uu_avl_index_t idx;
2387         nvlist_t *props;
2388         us_node_t *n;
2389         zfs_sort_column_t *sortcol = cb->cb_sortcol;
2390         unsigned type = 0;
2391         const char *typestr;
2392         size_t namelen;
2393         size_t typelen;
2394         size_t sizelen;
2395         int typeidx, nameidx, sizeidx;
2396         us_sort_info_t sortinfo = { sortcol, cb->cb_numname };
2397         boolean_t smbentity = B_FALSE;
2398
2399         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
2400                 nomem();
2401         node = safe_malloc(sizeof (us_node_t));
2402         uu_avl_node_init(node, &node->usn_avlnode, avl_pool);
2403         node->usn_nvl = props;
2404
2405         if (domain != NULL && domain[0] != '\0') {
2406 #ifdef HAVE_IDMAP
2407                 /* SMB */
2408                 char sid[ZFS_MAXNAMELEN + 32];
2409                 uid_t id;
2410                 uint64_t classes;
2411                 int err;
2412                 directory_error_t e;
2413
2414                 smbentity = B_TRUE;
2415
2416                 (void) snprintf(sid, sizeof (sid), "%s-%u", domain, rid);
2417
2418                 if (prop == ZFS_PROP_GROUPUSED || prop == ZFS_PROP_GROUPQUOTA) {
2419                         type = USTYPE_SMB_GRP;
2420                         err = sid_to_id(sid, B_FALSE, &id);
2421                 } else {
2422                         type = USTYPE_SMB_USR;
2423                         err = sid_to_id(sid, B_TRUE, &id);
2424                 }
2425
2426                 if (err == 0) {
2427                         rid = id;
2428                         if (!cb->cb_sid2posix) {
2429                                 e = directory_name_from_sid(NULL, sid, &name,
2430                                     &classes);
2431                                 if (e != NULL)
2432                                         directory_error_free(e);
2433                                 if (name == NULL)
2434                                         name = sid;
2435                         }
2436                 }
2437 #else
2438                 nvlist_free(props);
2439                 free(node);
2440
2441                 return (-1);
2442 #endif /* HAVE_IDMAP */
2443         }
2444
2445         if (cb->cb_sid2posix || domain == NULL || domain[0] == '\0') {
2446                 /* POSIX or -i */
2447                 if (prop == ZFS_PROP_GROUPUSED || prop == ZFS_PROP_GROUPQUOTA) {
2448                         type = USTYPE_PSX_GRP;
2449                         if (!cb->cb_numname) {
2450                                 struct group *g;
2451
2452                                 if ((g = getgrgid(rid)) != NULL)
2453                                         name = g->gr_name;
2454                         }
2455                 } else {
2456                         type = USTYPE_PSX_USR;
2457                         if (!cb->cb_numname) {
2458                                 struct passwd *p;
2459
2460                                 if ((p = getpwuid(rid)) != NULL)
2461                                         name = p->pw_name;
2462                         }
2463                 }
2464         }
2465
2466         /*
2467          * Make sure that the type/name combination is unique when doing
2468          * SID to POSIX ID translation (hence changing the type from SMB to
2469          * POSIX).
2470          */
2471         if (cb->cb_sid2posix &&
2472             nvlist_add_boolean_value(props, "smbentity", smbentity) != 0)
2473                 nomem();
2474
2475         /* Calculate/update width of TYPE field */
2476         typestr = us_type2str(type);
2477         typelen = strlen(gettext(typestr));
2478         typeidx = us_field_index("type");
2479         if (typelen > cb->cb_width[typeidx])
2480                 cb->cb_width[typeidx] = typelen;
2481         if (nvlist_add_uint32(props, "type", type) != 0)
2482                 nomem();
2483
2484         /* Calculate/update width of NAME field */
2485         if ((cb->cb_numname && cb->cb_sid2posix) || name == NULL) {
2486                 if (nvlist_add_uint64(props, "name", rid) != 0)
2487                         nomem();
2488                 namelen = snprintf(NULL, 0, "%u", rid);
2489         } else {
2490                 if (nvlist_add_string(props, "name", name) != 0)
2491                         nomem();
2492                 namelen = strlen(name);
2493         }
2494         nameidx = us_field_index("name");
2495         if (namelen > cb->cb_width[nameidx])
2496                 cb->cb_width[nameidx] = namelen;
2497
2498         /*
2499          * Check if this type/name combination is in the list and update it;
2500          * otherwise add new node to the list.
2501          */
2502         if ((n = uu_avl_find(avl, node, &sortinfo, &idx)) == NULL) {
2503                 uu_avl_insert(avl, node, idx);
2504         } else {
2505                 nvlist_free(props);
2506                 free(node);
2507                 node = n;
2508                 props = node->usn_nvl;
2509         }
2510
2511         /* Calculate/update width of USED/QUOTA fields */
2512         if (cb->cb_nicenum)
2513                 zfs_nicenum(space, sizebuf, sizeof (sizebuf));
2514         else
2515                 (void) snprintf(sizebuf, sizeof (sizebuf), "%llu",
2516                     (u_longlong_t)space);
2517         sizelen = strlen(sizebuf);
2518         if (prop == ZFS_PROP_USERUSED || prop == ZFS_PROP_GROUPUSED) {
2519                 propname = "used";
2520                 if (!nvlist_exists(props, "quota"))
2521                         (void) nvlist_add_uint64(props, "quota", 0);
2522         } else {
2523                 propname = "quota";
2524                 if (!nvlist_exists(props, "used"))
2525                         (void) nvlist_add_uint64(props, "used", 0);
2526         }
2527         sizeidx = us_field_index(propname);
2528         if (sizelen > cb->cb_width[sizeidx])
2529                 cb->cb_width[sizeidx] = sizelen;
2530
2531         if (nvlist_add_uint64(props, propname, space) != 0)
2532                 nomem();
2533
2534         return (0);
2535 }
2536
2537 static void
2538 print_us_node(boolean_t scripted, boolean_t parsable, int *fields, int types,
2539     size_t *width, us_node_t *node)
2540 {
2541         nvlist_t *nvl = node->usn_nvl;
2542         char valstr[ZFS_MAXNAMELEN];
2543         boolean_t first = B_TRUE;
2544         int cfield = 0;
2545         int field;
2546         uint32_t ustype;
2547
2548         /* Check type */
2549         (void) nvlist_lookup_uint32(nvl, "type", &ustype);
2550         if (!(ustype & types))
2551                 return;
2552
2553         while ((field = fields[cfield]) != USFIELD_LAST) {
2554                 nvpair_t *nvp = NULL;
2555                 data_type_t type;
2556                 uint32_t val32;
2557                 uint64_t val64;
2558                 char *strval = NULL;
2559
2560                 while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
2561                         if (strcmp(nvpair_name(nvp),
2562                             us_field_names[field]) == 0)
2563                                 break;
2564                 }
2565
2566                 type = nvpair_type(nvp);
2567                 switch (type) {
2568                 case DATA_TYPE_UINT32:
2569                         (void) nvpair_value_uint32(nvp, &val32);
2570                         break;
2571                 case DATA_TYPE_UINT64:
2572                         (void) nvpair_value_uint64(nvp, &val64);
2573                         break;
2574                 case DATA_TYPE_STRING:
2575                         (void) nvpair_value_string(nvp, &strval);
2576                         break;
2577                 default:
2578                         (void) fprintf(stderr, "invalid data type\n");
2579                 }
2580
2581                 switch (field) {
2582                 case USFIELD_TYPE:
2583                         strval = (char *)us_type2str(val32);
2584                         break;
2585                 case USFIELD_NAME:
2586                         if (type == DATA_TYPE_UINT64) {
2587                                 (void) sprintf(valstr, "%llu",
2588                                     (u_longlong_t) val64);
2589                                 strval = valstr;
2590                         }
2591                         break;
2592                 case USFIELD_USED:
2593                 case USFIELD_QUOTA:
2594                         if (type == DATA_TYPE_UINT64) {
2595                                 if (parsable) {
2596                                         (void) sprintf(valstr, "%llu",
2597                                             (u_longlong_t) val64);
2598                                 } else {
2599                                         zfs_nicenum(val64, valstr,
2600                                             sizeof (valstr));
2601                                 }
2602                                 if (field == USFIELD_QUOTA &&
2603                                     strcmp(valstr, "0") == 0)
2604                                         strval = "none";
2605                                 else
2606                                         strval = valstr;
2607                         }
2608                         break;
2609                 }
2610
2611                 if (!first) {
2612                         if (scripted)
2613                                 (void) printf("\t");
2614                         else
2615                                 (void) printf("  ");
2616                 }
2617                 if (scripted)
2618                         (void) printf("%s", strval);
2619                 else if (field == USFIELD_TYPE || field == USFIELD_NAME)
2620                         (void) printf("%-*s", (int) width[field], strval);
2621                 else
2622                         (void) printf("%*s", (int) width[field], strval);
2623
2624                 first = B_FALSE;
2625                 cfield++;
2626         }
2627
2628         (void) printf("\n");
2629 }
2630
2631 static void
2632 print_us(boolean_t scripted, boolean_t parsable, int *fields, int types,
2633     size_t *width, boolean_t rmnode, uu_avl_t *avl)
2634 {
2635         us_node_t *node;
2636         const char *col;
2637         int cfield = 0;
2638         int field;
2639
2640         if (!scripted) {
2641                 boolean_t first = B_TRUE;
2642
2643                 while ((field = fields[cfield]) != USFIELD_LAST) {
2644                         col = gettext(us_field_hdr[field]);
2645                         if (field == USFIELD_TYPE || field == USFIELD_NAME) {
2646                                 (void) printf(first ? "%-*s" : "  %-*s",
2647                                     (int) width[field], col);
2648                         } else {
2649                                 (void) printf(first ? "%*s" : "  %*s",
2650                                     (int) width[field], col);
2651                         }
2652                         first = B_FALSE;
2653                         cfield++;
2654                 }
2655                 (void) printf("\n");
2656         }
2657
2658         for (node = uu_avl_first(avl); node; node = uu_avl_next(avl, node)) {
2659                 print_us_node(scripted, parsable, fields, types, width, node);
2660                 if (rmnode)
2661                         nvlist_free(node->usn_nvl);
2662         }
2663 }
2664
2665 static int
2666 zfs_do_userspace(int argc, char **argv)
2667 {
2668         zfs_handle_t *zhp;
2669         zfs_userquota_prop_t p;
2670         uu_avl_pool_t *avl_pool;
2671         uu_avl_t *avl_tree;
2672         uu_avl_walk_t *walk;
2673         char *delim;
2674         char deffields[] = "type,name,used,quota";
2675         char *ofield = NULL;
2676         char *tfield = NULL;
2677         int cfield = 0;
2678         int fields[256];
2679         int i;
2680         boolean_t scripted = B_FALSE;
2681         boolean_t prtnum = B_FALSE;
2682         boolean_t parsable = B_FALSE;
2683         boolean_t sid2posix = B_FALSE;
2684         int ret = 0;
2685         int c;
2686         zfs_sort_column_t *sortcol = NULL;
2687         int types = USTYPE_PSX_USR | USTYPE_SMB_USR;
2688         us_cbdata_t cb;
2689         us_node_t *node;
2690         us_node_t *rmnode;
2691         uu_list_pool_t *listpool;
2692         uu_list_t *list;
2693         uu_avl_index_t idx = 0;
2694         uu_list_index_t idx2 = 0;
2695
2696         if (argc < 2)
2697                 usage(B_FALSE);
2698
2699         if (strcmp(argv[0], "groupspace") == 0)
2700                 /* Toggle default group types */
2701                 types = USTYPE_PSX_GRP | USTYPE_SMB_GRP;
2702
2703         while ((c = getopt(argc, argv, "nHpo:s:S:t:i")) != -1) {
2704                 switch (c) {
2705                 case 'n':
2706                         prtnum = B_TRUE;
2707                         break;
2708                 case 'H':
2709                         scripted = B_TRUE;
2710                         break;
2711                 case 'p':
2712                         parsable = B_TRUE;
2713                         break;
2714                 case 'o':
2715                         ofield = optarg;
2716                         break;
2717                 case 's':
2718                 case 'S':
2719                         if (zfs_add_sort_column(&sortcol, optarg,
2720                             c == 's' ? B_FALSE : B_TRUE) != 0) {
2721                                 (void) fprintf(stderr,
2722                                     gettext("invalid field '%s'\n"), optarg);
2723                                 usage(B_FALSE);
2724                         }
2725                         break;
2726                 case 't':
2727                         tfield = optarg;
2728                         break;
2729                 case 'i':
2730                         sid2posix = B_TRUE;
2731                         break;
2732                 case ':':
2733                         (void) fprintf(stderr, gettext("missing argument for "
2734                             "'%c' option\n"), optopt);
2735                         usage(B_FALSE);
2736                         break;
2737                 case '?':
2738                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2739                             optopt);
2740                         usage(B_FALSE);
2741                 }
2742         }
2743
2744         argc -= optind;
2745         argv += optind;
2746
2747         if (argc < 1) {
2748                 (void) fprintf(stderr, gettext("missing dataset name\n"));
2749                 usage(B_FALSE);
2750         }
2751         if (argc > 1) {
2752                 (void) fprintf(stderr, gettext("too many arguments\n"));
2753                 usage(B_FALSE);
2754         }
2755
2756         /* Use default output fields if not specified using -o */
2757         if (ofield == NULL)
2758                 ofield = deffields;
2759         do {
2760                 if ((delim = strchr(ofield, ',')) != NULL)
2761                         *delim = '\0';
2762                 if ((fields[cfield++] = us_field_index(ofield)) == -1) {
2763                         (void) fprintf(stderr, gettext("invalid type '%s' "
2764                             "for -o option\n"), ofield);
2765                         return (-1);
2766                 }
2767                 if (delim != NULL)
2768                         ofield = delim + 1;
2769         } while (delim != NULL);
2770         fields[cfield] = USFIELD_LAST;
2771
2772         /* Override output types (-t option) */
2773         if (tfield != NULL) {
2774                 types = 0;
2775
2776                 do {
2777                         boolean_t found = B_FALSE;
2778
2779                         if ((delim = strchr(tfield, ',')) != NULL)
2780                                 *delim = '\0';
2781                         for (i = 0; i < sizeof (us_type_bits) / sizeof (int);
2782                             i++) {
2783                                 if (strcmp(tfield, us_type_names[i]) == 0) {
2784                                         found = B_TRUE;
2785                                         types |= us_type_bits[i];
2786                                         break;
2787                                 }
2788                         }
2789                         if (!found) {
2790                                 (void) fprintf(stderr, gettext("invalid type "
2791                                     "'%s' for -t option\n"), tfield);
2792                                 return (-1);
2793                         }
2794                         if (delim != NULL)
2795                                 tfield = delim + 1;
2796                 } while (delim != NULL);
2797         }
2798
2799         if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL)
2800                 return (1);
2801
2802         if ((avl_pool = uu_avl_pool_create("us_avl_pool", sizeof (us_node_t),
2803             offsetof(us_node_t, usn_avlnode), us_compare, UU_DEFAULT)) == NULL)
2804                 nomem();
2805         if ((avl_tree = uu_avl_create(avl_pool, NULL, UU_DEFAULT)) == NULL)
2806                 nomem();
2807
2808         /* Always add default sorting columns */
2809         (void) zfs_add_sort_column(&sortcol, "type", B_FALSE);
2810         (void) zfs_add_sort_column(&sortcol, "name", B_FALSE);
2811
2812         cb.cb_sortcol = sortcol;
2813         cb.cb_numname = prtnum;
2814         cb.cb_nicenum = !parsable;
2815         cb.cb_avl_pool = avl_pool;
2816         cb.cb_avl = avl_tree;
2817         cb.cb_sid2posix = sid2posix;
2818
2819         for (i = 0; i < USFIELD_LAST; i++)
2820                 cb.cb_width[i] = strlen(gettext(us_field_hdr[i]));
2821
2822         for (p = 0; p < ZFS_NUM_USERQUOTA_PROPS; p++) {
2823                 if (((p == ZFS_PROP_USERUSED || p == ZFS_PROP_USERQUOTA) &&
2824                     !(types & (USTYPE_PSX_USR | USTYPE_SMB_USR))) ||
2825                     ((p == ZFS_PROP_GROUPUSED || p == ZFS_PROP_GROUPQUOTA) &&
2826                     !(types & (USTYPE_PSX_GRP | USTYPE_SMB_GRP))))
2827                         continue;
2828                 cb.cb_prop = p;
2829                 if ((ret = zfs_userspace(zhp, p, userspace_cb, &cb)) != 0)
2830                         return (ret);
2831         }
2832
2833         /* Sort the list */
2834         if ((node = uu_avl_first(avl_tree)) == NULL)
2835                 return (0);
2836
2837         us_populated = B_TRUE;
2838
2839         listpool = uu_list_pool_create("tmplist", sizeof (us_node_t),
2840             offsetof(us_node_t, usn_listnode), NULL, UU_DEFAULT);
2841         list = uu_list_create(listpool, NULL, UU_DEFAULT);
2842         uu_list_node_init(node, &node->usn_listnode, listpool);
2843
2844         while (node != NULL) {
2845                 rmnode = node;
2846                 node = uu_avl_next(avl_tree, node);
2847                 uu_avl_remove(avl_tree, rmnode);
2848                 if (uu_list_find(list, rmnode, NULL, &idx2) == NULL)
2849                         uu_list_insert(list, rmnode, idx2);
2850         }
2851
2852         for (node = uu_list_first(list); node != NULL;
2853             node = uu_list_next(list, node)) {
2854                 us_sort_info_t sortinfo = { sortcol, cb.cb_numname };
2855
2856                 if (uu_avl_find(avl_tree, node, &sortinfo, &idx) == NULL)
2857                         uu_avl_insert(avl_tree, node, idx);
2858         }
2859
2860         uu_list_destroy(list);
2861         uu_list_pool_destroy(listpool);
2862
2863         /* Print and free node nvlist memory */
2864         print_us(scripted, parsable, fields, types, cb.cb_width, B_TRUE,
2865             cb.cb_avl);
2866
2867         zfs_free_sort_columns(sortcol);
2868
2869         /* Clean up the AVL tree */
2870         if ((walk = uu_avl_walk_start(cb.cb_avl, UU_WALK_ROBUST)) == NULL)
2871                 nomem();
2872
2873         while ((node = uu_avl_walk_next(walk)) != NULL) {
2874                 uu_avl_remove(cb.cb_avl, node);
2875                 free(node);
2876         }
2877
2878         uu_avl_walk_end(walk);
2879         uu_avl_destroy(avl_tree);
2880         uu_avl_pool_destroy(avl_pool);
2881
2882         return (ret);
2883 }
2884
2885 /*
2886  * list [-Hp][-r|-d max] [-o property[,...]] [-s property] ... [-S property]
2887  *      [-t type[,...]] [filesystem|volume|snapshot] ...
2888  *
2889  *      -H      Scripted mode; elide headers and separate columns by tabs
2890  *      -p      Display values in parsable (literal) format.
2891  *      -r      Recurse over all children
2892  *      -d      Limit recursion by depth.
2893  *      -o      Control which fields to display.
2894  *      -s      Specify sort columns, descending order.
2895  *      -S      Specify sort columns, ascending order.
2896  *      -t      Control which object types to display.
2897  *
2898  * When given no arguments, list all filesystems in the system.
2899  * Otherwise, list the specified datasets, optionally recursing down them if
2900  * '-r' is specified.
2901  */
2902 typedef struct list_cbdata {
2903         boolean_t       cb_first;
2904         boolean_t       cb_literal;
2905         boolean_t       cb_scripted;
2906         zprop_list_t    *cb_proplist;
2907 } list_cbdata_t;
2908
2909 /*
2910  * Given a list of columns to display, output appropriate headers for each one.
2911  */
2912 static void
2913 print_header(list_cbdata_t *cb)
2914 {
2915         zprop_list_t *pl = cb->cb_proplist;
2916         char headerbuf[ZFS_MAXPROPLEN];
2917         const char *header;
2918         int i;
2919         boolean_t first = B_TRUE;
2920         boolean_t right_justify;
2921
2922         for (; pl != NULL; pl = pl->pl_next) {
2923                 if (!first) {
2924                         (void) printf("  ");
2925                 } else {
2926                         first = B_FALSE;
2927                 }
2928
2929                 right_justify = B_FALSE;
2930                 if (pl->pl_prop != ZPROP_INVAL) {
2931                         header = zfs_prop_column_name(pl->pl_prop);
2932                         right_justify = zfs_prop_align_right(pl->pl_prop);
2933                 } else {
2934                         for (i = 0; pl->pl_user_prop[i] != '\0'; i++)
2935                                 headerbuf[i] = toupper(pl->pl_user_prop[i]);
2936                         headerbuf[i] = '\0';
2937                         header = headerbuf;
2938                 }
2939
2940                 if (pl->pl_next == NULL && !right_justify)
2941                         (void) printf("%s", header);
2942                 else if (right_justify)
2943                         (void) printf("%*s", (int)pl->pl_width, header);
2944                 else
2945                         (void) printf("%-*s", (int)pl->pl_width, header);
2946         }
2947
2948         (void) printf("\n");
2949 }
2950
2951 /*
2952  * Given a dataset and a list of fields, print out all the properties according
2953  * to the described layout.
2954  */
2955 static void
2956 print_dataset(zfs_handle_t *zhp, list_cbdata_t *cb)
2957 {
2958         zprop_list_t *pl = cb->cb_proplist;
2959         boolean_t first = B_TRUE;
2960         char property[ZFS_MAXPROPLEN];
2961         nvlist_t *userprops = zfs_get_user_props(zhp);
2962         nvlist_t *propval;
2963         char *propstr;
2964         boolean_t right_justify;
2965
2966         for (; pl != NULL; pl = pl->pl_next) {
2967                 if (!first) {
2968                         if (cb->cb_scripted)
2969                                 (void) printf("\t");
2970                         else
2971                                 (void) printf("  ");
2972                 } else {
2973                         first = B_FALSE;
2974                 }
2975
2976                 if (pl->pl_prop == ZFS_PROP_NAME) {
2977                         (void) strlcpy(property, zfs_get_name(zhp),
2978                             sizeof (property));
2979                         propstr = property;
2980                         right_justify = zfs_prop_align_right(pl->pl_prop);
2981                 } else if (pl->pl_prop != ZPROP_INVAL) {
2982                         if (zfs_prop_get(zhp, pl->pl_prop, property,
2983                             sizeof (property), NULL, NULL, 0,
2984                             cb->cb_literal) != 0)
2985                                 propstr = "-";
2986                         else
2987                                 propstr = property;
2988                         right_justify = zfs_prop_align_right(pl->pl_prop);
2989                 } else if (zfs_prop_userquota(pl->pl_user_prop)) {
2990                         if (zfs_prop_get_userquota(zhp, pl->pl_user_prop,
2991                             property, sizeof (property), cb->cb_literal) != 0)
2992                                 propstr = "-";
2993                         else
2994                                 propstr = property;
2995                         right_justify = B_TRUE;
2996                 } else if (zfs_prop_written(pl->pl_user_prop)) {
2997                         if (zfs_prop_get_written(zhp, pl->pl_user_prop,
2998                             property, sizeof (property), cb->cb_literal) != 0)
2999                                 propstr = "-";
3000                         else
3001                                 propstr = property;
3002                         right_justify = B_TRUE;
3003                 } else {
3004                         if (nvlist_lookup_nvlist(userprops,
3005                             pl->pl_user_prop, &propval) != 0)
3006                                 propstr = "-";
3007                         else
3008                                 verify(nvlist_lookup_string(propval,
3009                                     ZPROP_VALUE, &propstr) == 0);
3010                         right_justify = B_FALSE;
3011                 }
3012
3013                 /*
3014                  * If this is being called in scripted mode, or if this is the
3015                  * last column and it is left-justified, don't include a width
3016                  * format specifier.
3017                  */
3018                 if (cb->cb_scripted || (pl->pl_next == NULL && !right_justify))
3019                         (void) printf("%s", propstr);
3020                 else if (right_justify)
3021                         (void) printf("%*s", (int)pl->pl_width, propstr);
3022                 else
3023                         (void) printf("%-*s", (int)pl->pl_width, propstr);
3024         }
3025
3026         (void) printf("\n");
3027 }
3028
3029 /*
3030  * Generic callback function to list a dataset or snapshot.
3031  */
3032 static int
3033 list_callback(zfs_handle_t *zhp, void *data)
3034 {
3035         list_cbdata_t *cbp = data;
3036
3037         if (cbp->cb_first) {
3038                 if (!cbp->cb_scripted)
3039                         print_header(cbp);
3040                 cbp->cb_first = B_FALSE;
3041         }
3042
3043         print_dataset(zhp, cbp);
3044
3045         return (0);
3046 }
3047
3048 static int
3049 zfs_do_list(int argc, char **argv)
3050 {
3051         int c;
3052         static char default_fields[] =
3053             "name,used,available,referenced,mountpoint";
3054         int types = ZFS_TYPE_DATASET;
3055         boolean_t types_specified = B_FALSE;
3056         char *fields = NULL;
3057         list_cbdata_t cb = { 0 };
3058         char *value;
3059         int limit = 0;
3060         int ret = 0;
3061         zfs_sort_column_t *sortcol = NULL;
3062         int flags = ZFS_ITER_PROP_LISTSNAPS | ZFS_ITER_ARGS_CAN_BE_PATHS;
3063
3064         /* check options */
3065         while ((c = getopt(argc, argv, "HS:d:o:prs:t:")) != -1) {
3066                 switch (c) {
3067                 case 'o':
3068                         fields = optarg;
3069                         break;
3070                 case 'p':
3071                         cb.cb_literal = B_TRUE;
3072                         flags |= ZFS_ITER_LITERAL_PROPS;
3073                         break;
3074                 case 'd':
3075                         limit = parse_depth(optarg, &flags);
3076                         break;
3077                 case 'r':
3078                         flags |= ZFS_ITER_RECURSE;
3079                         break;
3080                 case 'H':
3081                         cb.cb_scripted = B_TRUE;
3082                         break;
3083                 case 's':
3084                         if (zfs_add_sort_column(&sortcol, optarg,
3085                             B_FALSE) != 0) {
3086                                 (void) fprintf(stderr,
3087                                     gettext("invalid property '%s'\n"), optarg);
3088                                 usage(B_FALSE);
3089                         }
3090                         break;
3091                 case 'S':
3092                         if (zfs_add_sort_column(&sortcol, optarg,
3093                             B_TRUE) != 0) {
3094                                 (void) fprintf(stderr,
3095                                     gettext("invalid property '%s'\n"), optarg);
3096                                 usage(B_FALSE);
3097                         }
3098                         break;
3099                 case 't':
3100                         types = 0;
3101                         types_specified = B_TRUE;
3102                         flags &= ~ZFS_ITER_PROP_LISTSNAPS;
3103                         while (*optarg != '\0') {
3104                                 static char *type_subopts[] = { "filesystem",
3105                                     "volume", "snapshot", "snap", "bookmark",
3106                                     "all", NULL };
3107
3108                                 switch (getsubopt(&optarg, type_subopts,
3109                                     &value)) {
3110                                 case 0:
3111                                         types |= ZFS_TYPE_FILESYSTEM;
3112                                         break;
3113                                 case 1:
3114                                         types |= ZFS_TYPE_VOLUME;
3115                                         break;
3116                                 case 2:
3117                                 case 3:
3118                                         types |= ZFS_TYPE_SNAPSHOT;
3119                                         break;
3120                                 case 4:
3121                                         types |= ZFS_TYPE_BOOKMARK;
3122                                         break;
3123                                 case 5:
3124                                         types = ZFS_TYPE_DATASET |
3125                                             ZFS_TYPE_BOOKMARK;
3126                                         break;
3127                                 default:
3128                                         (void) fprintf(stderr,
3129                                             gettext("invalid type '%s'\n"),
3130                                             value);
3131                                         usage(B_FALSE);
3132                                 }
3133                         }
3134                         break;
3135                 case ':':
3136                         (void) fprintf(stderr, gettext("missing argument for "
3137                             "'%c' option\n"), optopt);
3138                         usage(B_FALSE);
3139                         break;
3140                 case '?':
3141                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3142                             optopt);
3143                         usage(B_FALSE);
3144                 }
3145         }
3146
3147         argc -= optind;
3148         argv += optind;
3149
3150         if (fields == NULL)
3151                 fields = default_fields;
3152
3153         /*
3154          * If we are only going to list snapshot names and sort by name,
3155          * then we can use faster version.
3156          */
3157         if (strcmp(fields, "name") == 0 && zfs_sort_only_by_name(sortcol))
3158                 flags |= ZFS_ITER_SIMPLE;
3159
3160         /*
3161          * If "-o space" and no types were specified, don't display snapshots.
3162          */
3163         if (strcmp(fields, "space") == 0 && types_specified == B_FALSE)
3164                 types &= ~ZFS_TYPE_SNAPSHOT;
3165
3166         /*
3167          * If the user specifies '-o all', the zprop_get_list() doesn't
3168          * normally include the name of the dataset.  For 'zfs list', we always
3169          * want this property to be first.
3170          */
3171         if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
3172             != 0)
3173                 usage(B_FALSE);
3174
3175         cb.cb_first = B_TRUE;
3176
3177         ret = zfs_for_each(argc, argv, flags, types, sortcol, &cb.cb_proplist,
3178             limit, list_callback, &cb);
3179
3180         zprop_free_list(cb.cb_proplist);
3181         zfs_free_sort_columns(sortcol);
3182
3183         if (ret == 0 && cb.cb_first && !cb.cb_scripted)
3184                 (void) fprintf(stderr, gettext("no datasets available\n"));
3185
3186         return (ret);
3187 }
3188
3189 /*
3190  * zfs rename [-f] <fs | snap | vol> <fs | snap | vol>
3191  * zfs rename [-f] -p <fs | vol> <fs | vol>
3192  * zfs rename -r <snap> <snap>
3193  *
3194  * Renames the given dataset to another of the same type.
3195  *
3196  * The '-p' flag creates all the non-existing ancestors of the target first.
3197  */
3198 /* ARGSUSED */
3199 static int
3200 zfs_do_rename(int argc, char **argv)
3201 {
3202         zfs_handle_t *zhp;
3203         int c;
3204         int ret = 0;
3205         boolean_t recurse = B_FALSE;
3206         boolean_t parents = B_FALSE;
3207         boolean_t force_unmount = B_FALSE;
3208
3209         /* check options */
3210         while ((c = getopt(argc, argv, "prf")) != -1) {
3211                 switch (c) {
3212                 case 'p':
3213                         parents = B_TRUE;
3214                         break;
3215                 case 'r':
3216                         recurse = B_TRUE;
3217                         break;
3218                 case 'f':
3219                         force_unmount = B_TRUE;
3220                         break;
3221                 case '?':
3222                 default:
3223                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3224                             optopt);
3225                         usage(B_FALSE);
3226                 }
3227         }
3228
3229         argc -= optind;
3230         argv += optind;
3231
3232         /* check number of arguments */
3233         if (argc < 1) {
3234                 (void) fprintf(stderr, gettext("missing source dataset "
3235                     "argument\n"));
3236                 usage(B_FALSE);
3237         }
3238         if (argc < 2) {
3239                 (void) fprintf(stderr, gettext("missing target dataset "
3240                     "argument\n"));
3241                 usage(B_FALSE);
3242         }
3243         if (argc > 2) {
3244                 (void) fprintf(stderr, gettext("too many arguments\n"));
3245                 usage(B_FALSE);
3246         }
3247
3248         if (recurse && parents) {
3249                 (void) fprintf(stderr, gettext("-p and -r options are mutually "
3250                     "exclusive\n"));
3251                 usage(B_FALSE);
3252         }
3253
3254         if (recurse && strchr(argv[0], '@') == 0) {
3255                 (void) fprintf(stderr, gettext("source dataset for recursive "
3256                     "rename must be a snapshot\n"));
3257                 usage(B_FALSE);
3258         }
3259
3260         if ((zhp = zfs_open(g_zfs, argv[0], parents ? ZFS_TYPE_FILESYSTEM |
3261             ZFS_TYPE_VOLUME : ZFS_TYPE_DATASET)) == NULL)
3262                 return (1);
3263
3264         /* If we were asked and the name looks good, try to create ancestors. */
3265         if (parents && zfs_name_valid(argv[1], zfs_get_type(zhp)) &&
3266             zfs_create_ancestors(g_zfs, argv[1]) != 0) {
3267                 zfs_close(zhp);
3268                 return (1);
3269         }
3270
3271         ret = (zfs_rename(zhp, argv[1], recurse, force_unmount) != 0);
3272
3273         zfs_close(zhp);
3274         return (ret);
3275 }
3276
3277 /*
3278  * zfs promote <fs>
3279  *
3280  * Promotes the given clone fs to be the parent
3281  */
3282 /* ARGSUSED */
3283 static int
3284 zfs_do_promote(int argc, char **argv)
3285 {
3286         zfs_handle_t *zhp;
3287         int ret = 0;
3288
3289         /* check options */
3290         if (argc > 1 && argv[1][0] == '-') {
3291                 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3292                     argv[1][1]);
3293                 usage(B_FALSE);
3294         }
3295
3296         /* check number of arguments */
3297         if (argc < 2) {
3298                 (void) fprintf(stderr, gettext("missing clone filesystem"
3299                     " argument\n"));
3300                 usage(B_FALSE);
3301         }
3302         if (argc > 2) {
3303                 (void) fprintf(stderr, gettext("too many arguments\n"));
3304                 usage(B_FALSE);
3305         }
3306
3307         zhp = zfs_open(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3308         if (zhp == NULL)
3309                 return (1);
3310
3311         ret = (zfs_promote(zhp) != 0);
3312
3313
3314         zfs_close(zhp);
3315         return (ret);
3316 }
3317
3318 /*
3319  * zfs rollback [-rRf] <snapshot>
3320  *
3321  *      -r      Delete any intervening snapshots before doing rollback
3322  *      -R      Delete any snapshots and their clones
3323  *      -f      ignored for backwards compatability
3324  *
3325  * Given a filesystem, rollback to a specific snapshot, discarding any changes
3326  * since then and making it the active dataset.  If more recent snapshots exist,
3327  * the command will complain unless the '-r' flag is given.
3328  */
3329 typedef struct rollback_cbdata {
3330         uint64_t        cb_create;
3331         boolean_t       cb_first;
3332         int             cb_doclones;
3333         char            *cb_target;
3334         int             cb_error;
3335         boolean_t       cb_recurse;
3336 } rollback_cbdata_t;
3337
3338 static int
3339 rollback_check_dependent(zfs_handle_t *zhp, void *data)
3340 {
3341         rollback_cbdata_t *cbp = data;
3342
3343         if (cbp->cb_first && cbp->cb_recurse) {
3344                 (void) fprintf(stderr, gettext("cannot rollback to "
3345                     "'%s': clones of previous snapshots exist\n"),
3346                     cbp->cb_target);
3347                 (void) fprintf(stderr, gettext("use '-R' to "
3348                     "force deletion of the following clones and "
3349                     "dependents:\n"));
3350                 cbp->cb_first = 0;
3351                 cbp->cb_error = 1;
3352         }
3353
3354         (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
3355
3356         zfs_close(zhp);
3357         return (0);
3358 }
3359
3360
3361 /*
3362  * Report any snapshots more recent than the one specified.  Used when '-r' is
3363  * not specified.  We reuse this same callback for the snapshot dependents - if
3364  * 'cb_dependent' is set, then this is a dependent and we should report it
3365  * without checking the transaction group.
3366  */
3367 static int
3368 rollback_check(zfs_handle_t *zhp, void *data)
3369 {
3370         rollback_cbdata_t *cbp = data;
3371
3372         if (cbp->cb_doclones) {
3373                 zfs_close(zhp);
3374                 return (0);
3375         }
3376
3377         if (zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > cbp->cb_create) {
3378                 if (cbp->cb_first && !cbp->cb_recurse) {
3379                         (void) fprintf(stderr, gettext("cannot "
3380                             "rollback to '%s': more recent snapshots "
3381                             "or bookmarks exist\n"),
3382                             cbp->cb_target);
3383                         (void) fprintf(stderr, gettext("use '-r' to "
3384                             "force deletion of the following "
3385                             "snapshots and bookmarks:\n"));
3386                         cbp->cb_first = 0;
3387                         cbp->cb_error = 1;
3388                 }
3389
3390                 if (cbp->cb_recurse) {
3391                         if (zfs_iter_dependents(zhp, B_TRUE,
3392                             rollback_check_dependent, cbp) != 0) {
3393                                 zfs_close(zhp);
3394                                 return (-1);
3395                         }
3396                 } else {
3397                         (void) fprintf(stderr, "%s\n",
3398                             zfs_get_name(zhp));
3399                 }
3400         }
3401         zfs_close(zhp);
3402         return (0);
3403 }
3404
3405 static int
3406 zfs_do_rollback(int argc, char **argv)
3407 {
3408         int ret = 0;
3409         int c;
3410         boolean_t force = B_FALSE;
3411         rollback_cbdata_t cb = { 0 };
3412         zfs_handle_t *zhp, *snap;
3413         char parentname[ZFS_MAXNAMELEN];
3414         char *delim;
3415
3416         /* check options */
3417         while ((c = getopt(argc, argv, "rRf")) != -1) {
3418                 switch (c) {
3419                 case 'r':
3420                         cb.cb_recurse = 1;
3421                         break;
3422                 case 'R':
3423                         cb.cb_recurse = 1;
3424                         cb.cb_doclones = 1;
3425                         break;
3426                 case 'f':
3427                         force = B_TRUE;
3428                         break;
3429                 case '?':
3430                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3431                             optopt);
3432                         usage(B_FALSE);
3433                 }
3434         }
3435
3436         argc -= optind;
3437         argv += optind;
3438
3439         /* check number of arguments */
3440         if (argc < 1) {
3441                 (void) fprintf(stderr, gettext("missing dataset argument\n"));
3442                 usage(B_FALSE);
3443         }
3444         if (argc > 1) {
3445                 (void) fprintf(stderr, gettext("too many arguments\n"));
3446                 usage(B_FALSE);
3447         }
3448
3449         /* open the snapshot */
3450         if ((snap = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
3451                 return (1);
3452
3453         /* open the parent dataset */
3454         (void) strlcpy(parentname, argv[0], sizeof (parentname));
3455         verify((delim = strrchr(parentname, '@')) != NULL);
3456         *delim = '\0';
3457         if ((zhp = zfs_open(g_zfs, parentname, ZFS_TYPE_DATASET)) == NULL) {
3458                 zfs_close(snap);
3459                 return (1);
3460         }
3461
3462         /*
3463          * Check for more recent snapshots and/or clones based on the presence
3464          * of '-r' and '-R'.
3465          */
3466         cb.cb_target = argv[0];
3467         cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG);
3468         cb.cb_first = B_TRUE;
3469         cb.cb_error = 0;
3470         if ((ret = zfs_iter_snapshots(zhp, B_FALSE, rollback_check, &cb)) != 0)
3471                 goto out;
3472         if ((ret = zfs_iter_bookmarks(zhp, rollback_check, &cb)) != 0)
3473                 goto out;
3474
3475         if ((ret = cb.cb_error) != 0)
3476                 goto out;
3477
3478         /*
3479          * Rollback parent to the given snapshot.
3480          */
3481         ret = zfs_rollback(zhp, snap, force);
3482
3483 out:
3484         zfs_close(snap);
3485         zfs_close(zhp);
3486
3487         if (ret == 0)
3488                 return (0);
3489         else
3490                 return (1);
3491 }
3492
3493 /*
3494  * zfs set property=value ... { fs | snap | vol } ...
3495  *
3496  * Sets the given properties for all datasets specified on the command line.
3497  */
3498
3499 static int
3500 set_callback(zfs_handle_t *zhp, void *data)
3501 {
3502         nvlist_t *props = data;
3503
3504         if (zfs_prop_set_list(zhp, props) != 0) {
3505                 switch (libzfs_errno(g_zfs)) {
3506                 case EZFS_MOUNTFAILED:
3507                         (void) fprintf(stderr, gettext("property may be set "
3508                             "but unable to remount filesystem\n"));
3509                         break;
3510                 case EZFS_SHARENFSFAILED:
3511                         (void) fprintf(stderr, gettext("property may be set "
3512                             "but unable to reshare filesystem\n"));
3513                         break;
3514                 }
3515                 return (1);
3516         }
3517         return (0);
3518 }
3519
3520 static int
3521 zfs_do_set(int argc, char **argv)
3522 {
3523         nvlist_t *props = NULL;
3524         int ds_start = -1; /* argv idx of first dataset arg */
3525         int ret = 0;
3526         int i;
3527
3528         /* check for options */
3529         if (argc > 1 && argv[1][0] == '-') {
3530                 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3531                     argv[1][1]);
3532                 usage(B_FALSE);
3533         }
3534
3535         /* check number of arguments */
3536         if (argc < 2) {
3537                 (void) fprintf(stderr, gettext("missing arguments\n"));
3538                 usage(B_FALSE);
3539         }
3540         if (argc < 3) {
3541                 if (strchr(argv[1], '=') == NULL) {
3542                         (void) fprintf(stderr, gettext("missing property=value "
3543                             "argument(s)\n"));
3544                 } else {
3545                         (void) fprintf(stderr, gettext("missing dataset "
3546                             "name(s)\n"));
3547                 }
3548                 usage(B_FALSE);
3549         }
3550
3551         /* validate argument order:  prop=val args followed by dataset args */
3552         for (i = 1; i < argc; i++) {
3553                 if (strchr(argv[i], '=') != NULL) {
3554                         if (ds_start > 0) {
3555                                 /* out-of-order prop=val argument */
3556                                 (void) fprintf(stderr, gettext("invalid "
3557                                     "argument order\n"));
3558                                 usage(B_FALSE);
3559                         }
3560                 } else if (ds_start < 0) {
3561                         ds_start = i;
3562                 }
3563         }
3564         if (ds_start < 0) {
3565                 (void) fprintf(stderr, gettext("missing dataset name(s)\n"));
3566                 usage(B_FALSE);
3567         }
3568
3569         /* Populate a list of property settings */
3570         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
3571                 nomem();
3572         for (i = 1; i < ds_start; i++) {
3573                 if ((ret = parseprop(props, argv[i])) != 0)
3574                         goto error;
3575         }
3576
3577         ret = zfs_for_each(argc - ds_start, argv + ds_start, 0,
3578             ZFS_TYPE_DATASET, NULL, NULL, 0, set_callback, props);
3579
3580 error:
3581         nvlist_free(props);
3582         return (ret);
3583 }
3584
3585 typedef struct snap_cbdata {
3586         nvlist_t *sd_nvl;
3587         boolean_t sd_recursive;
3588         const char *sd_snapname;
3589 } snap_cbdata_t;
3590
3591 static int
3592 zfs_snapshot_cb(zfs_handle_t *zhp, void *arg)
3593 {
3594         snap_cbdata_t *sd = arg;
3595         char *name;
3596         int rv = 0;
3597         int error;
3598
3599         if (sd->sd_recursive &&
3600             zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) != 0) {
3601                 zfs_close(zhp);
3602                 return (0);
3603         }
3604
3605         error = asprintf(&name, "%s@%s", zfs_get_name(zhp), sd->sd_snapname);
3606         if (error == -1)
3607                 nomem();
3608         fnvlist_add_boolean(sd->sd_nvl, name);
3609         free(name);
3610
3611         if (sd->sd_recursive)
3612                 rv = zfs_iter_filesystems(zhp, zfs_snapshot_cb, sd);
3613         zfs_close(zhp);
3614         return (rv);
3615 }
3616
3617 /*
3618  * zfs snapshot [-r] [-o prop=value] ... <fs@snap>
3619  *
3620  * Creates a snapshot with the given name.  While functionally equivalent to
3621  * 'zfs create', it is a separate command to differentiate intent.
3622  */
3623 static int
3624 zfs_do_snapshot(int argc, char **argv)
3625 {
3626         int ret = 0;
3627         signed char c;
3628         nvlist_t *props;
3629         snap_cbdata_t sd = { 0 };
3630         boolean_t multiple_snaps = B_FALSE;
3631
3632         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
3633                 nomem();
3634         if (nvlist_alloc(&sd.sd_nvl, NV_UNIQUE_NAME, 0) != 0)
3635                 nomem();
3636
3637         /* check options */
3638         while ((c = getopt(argc, argv, "ro:")) != -1) {
3639                 switch (c) {
3640                 case 'o':
3641                         if (parseprop(props, optarg) != 0)
3642                                 return (1);
3643                         break;
3644                 case 'r':
3645                         sd.sd_recursive = B_TRUE;
3646                         multiple_snaps = B_TRUE;
3647                         break;
3648                 case '?':
3649                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3650                             optopt);
3651                         goto usage;
3652                 }
3653         }
3654
3655         argc -= optind;
3656         argv += optind;
3657
3658         /* check number of arguments */
3659         if (argc < 1) {
3660                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
3661                 goto usage;
3662         }
3663
3664         if (argc > 1)
3665                 multiple_snaps = B_TRUE;
3666         for (; argc > 0; argc--, argv++) {
3667                 char *atp;
3668                 zfs_handle_t *zhp;
3669
3670                 atp = strchr(argv[0], '@');
3671                 if (atp == NULL)
3672                         goto usage;
3673                 *atp = '\0';
3674                 sd.sd_snapname = atp + 1;
3675                 zhp = zfs_open(g_zfs, argv[0],
3676                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3677                 if (zhp == NULL)
3678                         goto usage;
3679                 if (zfs_snapshot_cb(zhp, &sd) != 0)
3680                         goto usage;
3681         }
3682
3683         ret = zfs_snapshot_nvl(g_zfs, sd.sd_nvl, props);
3684         nvlist_free(sd.sd_nvl);
3685         nvlist_free(props);
3686         if (ret != 0 && multiple_snaps)
3687                 (void) fprintf(stderr, gettext("no snapshots were created\n"));
3688         return (ret != 0);
3689
3690 usage:
3691         nvlist_free(sd.sd_nvl);
3692         nvlist_free(props);
3693         usage(B_FALSE);
3694         return (-1);
3695 }
3696
3697 /*
3698  * Send a backup stream to stdout.
3699  */
3700 static int
3701 zfs_do_send(int argc, char **argv)
3702 {
3703         char *fromname = NULL;
3704         char *toname = NULL;
3705         char *cp;
3706         zfs_handle_t *zhp;
3707         sendflags_t flags = { 0 };
3708         int c, err;
3709         nvlist_t *dbgnv = NULL;
3710         boolean_t extraverbose = B_FALSE;
3711
3712         /* check options */
3713         while ((c = getopt(argc, argv, ":i:I:RDpvnPLe")) != -1) {
3714                 switch (c) {
3715                 case 'i':
3716                         if (fromname)
3717                                 usage(B_FALSE);
3718                         fromname = optarg;
3719                         break;
3720                 case 'I':
3721                         if (fromname)
3722                                 usage(B_FALSE);
3723                         fromname = optarg;
3724                         flags.doall = B_TRUE;
3725                         break;
3726                 case 'R':
3727                         flags.replicate = B_TRUE;
3728                         break;
3729                 case 'p':
3730                         flags.props = B_TRUE;
3731                         break;
3732                 case 'P':
3733                         flags.parsable = B_TRUE;
3734                         flags.verbose = B_TRUE;
3735                         break;
3736                 case 'v':
3737                         if (flags.verbose)
3738                                 extraverbose = B_TRUE;
3739                         flags.verbose = B_TRUE;
3740                         flags.progress = B_TRUE;
3741                         break;
3742                 case 'D':
3743                         flags.dedup = B_TRUE;
3744                         break;
3745                 case 'n':
3746                         flags.dryrun = B_TRUE;
3747                         break;
3748                 case 'L':
3749                         flags.largeblock = B_TRUE;
3750                         break;
3751                 case 'e':
3752                         flags.embed_data = B_TRUE;
3753                         break;
3754                 case ':':
3755                         (void) fprintf(stderr, gettext("missing argument for "
3756                             "'%c' option\n"), optopt);
3757                         usage(B_FALSE);
3758                         break;
3759                 case '?':
3760                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3761                             optopt);
3762                         usage(B_FALSE);
3763                 }
3764         }
3765
3766         argc -= optind;
3767         argv += optind;
3768
3769         /* check number of arguments */
3770         if (argc < 1) {
3771                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
3772                 usage(B_FALSE);
3773         }
3774         if (argc > 1) {
3775                 (void) fprintf(stderr, gettext("too many arguments\n"));
3776                 usage(B_FALSE);
3777         }
3778
3779         if (!flags.dryrun && isatty(STDOUT_FILENO)) {
3780                 (void) fprintf(stderr,
3781                     gettext("Error: Stream can not be written to a terminal.\n"
3782                     "You must redirect standard output.\n"));
3783                 return (1);
3784         }
3785
3786         /*
3787          * Special case sending a filesystem, or from a bookmark.
3788          */
3789         if (strchr(argv[0], '@') == NULL ||
3790             (fromname && strchr(fromname, '#') != NULL)) {
3791                 char frombuf[ZFS_MAXNAMELEN];
3792                 enum lzc_send_flags lzc_flags = 0;
3793
3794                 if (flags.replicate || flags.doall || flags.props ||
3795                     flags.dedup || flags.dryrun || flags.verbose ||
3796                     flags.progress) {
3797                         (void) fprintf(stderr,
3798                             gettext("Error: "
3799                             "Unsupported flag with filesystem or bookmark.\n"));
3800                         return (1);
3801                 }
3802
3803                 zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET);
3804                 if (zhp == NULL)
3805                         return (1);
3806
3807                 if (flags.largeblock)
3808                         lzc_flags |= LZC_SEND_FLAG_LARGE_BLOCK;
3809                 if (flags.embed_data)
3810                         lzc_flags |= LZC_SEND_FLAG_EMBED_DATA;
3811
3812                 if (fromname != NULL &&
3813                     (fromname[0] == '#' || fromname[0] == '@')) {
3814                         /*
3815                          * Incremental source name begins with # or @.
3816                          * Default to same fs as target.
3817                          */
3818                         (void) strncpy(frombuf, argv[0], sizeof (frombuf));
3819                         cp = strchr(frombuf, '@');
3820                         if (cp != NULL)
3821                                 *cp = '\0';
3822                         (void) strlcat(frombuf, fromname, sizeof (frombuf));
3823                         fromname = frombuf;
3824                 }
3825                 err = zfs_send_one(zhp, fromname, STDOUT_FILENO, lzc_flags);
3826                 zfs_close(zhp);
3827                 return (err != 0);
3828         }
3829
3830         cp = strchr(argv[0], '@');
3831         *cp = '\0';
3832         toname = cp + 1;
3833         zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3834         if (zhp == NULL)
3835                 return (1);
3836
3837         /*
3838          * If they specified the full path to the snapshot, chop off
3839          * everything except the short name of the snapshot, but special
3840          * case if they specify the origin.
3841          */
3842         if (fromname && (cp = strchr(fromname, '@')) != NULL) {
3843                 char origin[ZFS_MAXNAMELEN];
3844                 zprop_source_t src;
3845
3846                 (void) zfs_prop_get(zhp, ZFS_PROP_ORIGIN,
3847                     origin, sizeof (origin), &src, NULL, 0, B_FALSE);
3848
3849                 if (strcmp(origin, fromname) == 0) {
3850                         fromname = NULL;
3851                         flags.fromorigin = B_TRUE;
3852                 } else {
3853                         *cp = '\0';
3854                         if (cp != fromname && strcmp(argv[0], fromname)) {
3855                                 (void) fprintf(stderr,
3856                                     gettext("incremental source must be "
3857                                     "in same filesystem\n"));
3858                                 usage(B_FALSE);
3859                         }
3860                         fromname = cp + 1;
3861                         if (strchr(fromname, '@') || strchr(fromname, '/')) {
3862                                 (void) fprintf(stderr,
3863                                     gettext("invalid incremental source\n"));
3864                                 usage(B_FALSE);
3865                         }
3866                 }
3867         }
3868
3869         if (flags.replicate && fromname == NULL)
3870                 flags.doall = B_TRUE;
3871
3872         err = zfs_send(zhp, fromname, toname, &flags, STDOUT_FILENO, NULL, 0,
3873             extraverbose ? &dbgnv : NULL);
3874
3875         if (extraverbose && dbgnv != NULL) {
3876                 /*
3877                  * dump_nvlist prints to stdout, but that's been
3878                  * redirected to a file.  Make it print to stderr
3879                  * instead.
3880                  */
3881                 (void) dup2(STDERR_FILENO, STDOUT_FILENO);
3882                 dump_nvlist(dbgnv, 0);
3883                 nvlist_free(dbgnv);
3884         }
3885         zfs_close(zhp);
3886
3887         return (err != 0);
3888 }
3889
3890 /*
3891  * zfs receive [-vnFu] [-d | -e] <fs@snap>
3892  *
3893  * Restore a backup stream from stdin.
3894  */
3895 static int
3896 zfs_do_receive(int argc, char **argv)
3897 {
3898         int c, err;
3899         recvflags_t flags = { 0 };
3900         nvlist_t *props;
3901         nvpair_t *nvp = NULL;
3902
3903         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
3904                 nomem();
3905
3906         /* check options */
3907         while ((c = getopt(argc, argv, ":o:denuvF")) != -1) {
3908                 switch (c) {
3909                 case 'o':
3910                         if (parseprop(props, optarg) != 0)
3911                                 return (1);
3912                         break;
3913                 case 'd':
3914                         flags.isprefix = B_TRUE;
3915                         break;
3916                 case 'e':
3917                         flags.isprefix = B_TRUE;
3918                         flags.istail = B_TRUE;
3919                         break;
3920                 case 'n':
3921                         flags.dryrun = B_TRUE;
3922                         break;
3923                 case 'u':
3924                         flags.nomount = B_TRUE;
3925                         break;
3926                 case 'v':
3927                         flags.verbose = B_TRUE;
3928                         break;
3929                 case 'F':
3930                         flags.force = B_TRUE;
3931                         break;
3932                 case ':':
3933                         (void) fprintf(stderr, gettext("missing argument for "
3934                             "'%c' option\n"), optopt);
3935                         usage(B_FALSE);
3936                         break;
3937                 case '?':
3938                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3939                             optopt);
3940                         usage(B_FALSE);
3941                 }
3942         }
3943
3944         argc -= optind;
3945         argv += optind;
3946
3947         /* check number of arguments */
3948         if (argc < 1) {
3949                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
3950                 usage(B_FALSE);
3951         }
3952         if (argc > 1) {
3953                 (void) fprintf(stderr, gettext("too many arguments\n"));
3954                 usage(B_FALSE);
3955         }
3956
3957         while ((nvp = nvlist_next_nvpair(props, nvp))) {
3958                 if (strcmp(nvpair_name(nvp), "origin") != 0) {
3959                         (void) fprintf(stderr, gettext("invalid option"));
3960                         usage(B_FALSE);
3961                 }
3962         }
3963
3964         if (isatty(STDIN_FILENO)) {
3965                 (void) fprintf(stderr,
3966                     gettext("Error: Backup stream can not be read "
3967                     "from a terminal.\n"
3968                     "You must redirect standard input.\n"));
3969                 return (1);
3970         }
3971
3972         err = zfs_receive(g_zfs, argv[0], props, &flags, STDIN_FILENO, NULL);
3973
3974         return (err != 0);
3975 }
3976
3977 /*
3978  * allow/unallow stuff
3979  */
3980 /* copied from zfs/sys/dsl_deleg.h */
3981 #define ZFS_DELEG_PERM_CREATE           "create"
3982 #define ZFS_DELEG_PERM_DESTROY          "destroy"
3983 #define ZFS_DELEG_PERM_SNAPSHOT         "snapshot"
3984 #define ZFS_DELEG_PERM_ROLLBACK         "rollback"
3985 #define ZFS_DELEG_PERM_CLONE            "clone"
3986 #define ZFS_DELEG_PERM_PROMOTE          "promote"
3987 #define ZFS_DELEG_PERM_RENAME           "rename"
3988 #define ZFS_DELEG_PERM_MOUNT            "mount"
3989 #define ZFS_DELEG_PERM_SHARE            "share"
3990 #define ZFS_DELEG_PERM_SEND             "send"
3991 #define ZFS_DELEG_PERM_RECEIVE          "receive"
3992 #define ZFS_DELEG_PERM_ALLOW            "allow"
3993 #define ZFS_DELEG_PERM_USERPROP         "userprop"
3994 #define ZFS_DELEG_PERM_VSCAN            "vscan" /* ??? */
3995 #define ZFS_DELEG_PERM_USERQUOTA        "userquota"
3996 #define ZFS_DELEG_PERM_GROUPQUOTA       "groupquota"
3997 #define ZFS_DELEG_PERM_USERUSED         "userused"
3998 #define ZFS_DELEG_PERM_GROUPUSED        "groupused"
3999 #define ZFS_DELEG_PERM_HOLD             "hold"
4000 #define ZFS_DELEG_PERM_RELEASE          "release"
4001 #define ZFS_DELEG_PERM_DIFF             "diff"
4002 #define ZFS_DELEG_PERM_BOOKMARK         "bookmark"
4003
4004 #define ZFS_NUM_DELEG_NOTES ZFS_DELEG_NOTE_NONE
4005
4006 static zfs_deleg_perm_tab_t zfs_deleg_perm_tbl[] = {
4007         { ZFS_DELEG_PERM_ALLOW, ZFS_DELEG_NOTE_ALLOW },
4008         { ZFS_DELEG_PERM_CLONE, ZFS_DELEG_NOTE_CLONE },
4009         { ZFS_DELEG_PERM_CREATE, ZFS_DELEG_NOTE_CREATE },
4010         { ZFS_DELEG_PERM_DESTROY, ZFS_DELEG_NOTE_DESTROY },
4011         { ZFS_DELEG_PERM_DIFF, ZFS_DELEG_NOTE_DIFF},
4012         { ZFS_DELEG_PERM_HOLD, ZFS_DELEG_NOTE_HOLD },
4013         { ZFS_DELEG_PERM_MOUNT, ZFS_DELEG_NOTE_MOUNT },
4014         { ZFS_DELEG_PERM_PROMOTE, ZFS_DELEG_NOTE_PROMOTE },
4015         { ZFS_DELEG_PERM_RECEIVE, ZFS_DELEG_NOTE_RECEIVE },
4016         { ZFS_DELEG_PERM_RELEASE, ZFS_DELEG_NOTE_RELEASE },
4017         { ZFS_DELEG_PERM_RENAME, ZFS_DELEG_NOTE_RENAME },
4018         { ZFS_DELEG_PERM_ROLLBACK, ZFS_DELEG_NOTE_ROLLBACK },
4019         { ZFS_DELEG_PERM_SEND, ZFS_DELEG_NOTE_SEND },
4020         { ZFS_DELEG_PERM_SHARE, ZFS_DELEG_NOTE_SHARE },
4021         { ZFS_DELEG_PERM_SNAPSHOT, ZFS_DELEG_NOTE_SNAPSHOT },
4022         { ZFS_DELEG_PERM_BOOKMARK, ZFS_DELEG_NOTE_BOOKMARK },
4023
4024         { ZFS_DELEG_PERM_GROUPQUOTA, ZFS_DELEG_NOTE_GROUPQUOTA },
4025         { ZFS_DELEG_PERM_GROUPUSED, ZFS_DELEG_NOTE_GROUPUSED },
4026         { ZFS_DELEG_PERM_USERPROP, ZFS_DELEG_NOTE_USERPROP },
4027         { ZFS_DELEG_PERM_USERQUOTA, ZFS_DELEG_NOTE_USERQUOTA },
4028         { ZFS_DELEG_PERM_USERUSED, ZFS_DELEG_NOTE_USERUSED },
4029         { NULL, ZFS_DELEG_NOTE_NONE }
4030 };
4031
4032 /* permission structure */
4033 typedef struct deleg_perm {
4034         zfs_deleg_who_type_t    dp_who_type;
4035         const char              *dp_name;
4036         boolean_t               dp_local;
4037         boolean_t               dp_descend;
4038 } deleg_perm_t;
4039
4040 /* */
4041 typedef struct deleg_perm_node {
4042         deleg_perm_t            dpn_perm;
4043
4044         uu_avl_node_t           dpn_avl_node;
4045 } deleg_perm_node_t;
4046
4047 typedef struct fs_perm fs_perm_t;
4048
4049 /* permissions set */
4050 typedef struct who_perm {
4051         zfs_deleg_who_type_t    who_type;
4052         const char              *who_name;              /* id */
4053         char                    who_ug_name[256];       /* user/group name */
4054         fs_perm_t               *who_fsperm;            /* uplink */
4055
4056         uu_avl_t                *who_deleg_perm_avl;    /* permissions */
4057 } who_perm_t;
4058
4059 /* */
4060 typedef struct who_perm_node {
4061         who_perm_t      who_perm;
4062         uu_avl_node_t   who_avl_node;
4063 } who_perm_node_t;
4064
4065 typedef struct fs_perm_set fs_perm_set_t;
4066 /* fs permissions */
4067 struct fs_perm {
4068         const char              *fsp_name;
4069
4070         uu_avl_t                *fsp_sc_avl;    /* sets,create */
4071         uu_avl_t                *fsp_uge_avl;   /* user,group,everyone */
4072
4073         fs_perm_set_t           *fsp_set;       /* uplink */
4074 };
4075
4076 /* */
4077 typedef struct fs_perm_node {
4078         fs_perm_t       fspn_fsperm;
4079         uu_avl_t        *fspn_avl;
4080
4081         uu_list_node_t  fspn_list_node;
4082 } fs_perm_node_t;
4083
4084 /* top level structure */
4085 struct fs_perm_set {
4086         uu_list_pool_t  *fsps_list_pool;
4087         uu_list_t       *fsps_list; /* list of fs_perms */
4088
4089         uu_avl_pool_t   *fsps_named_set_avl_pool;
4090         uu_avl_pool_t   *fsps_who_perm_avl_pool;
4091         uu_avl_pool_t   *fsps_deleg_perm_avl_pool;
4092 };
4093
4094 static inline const char *
4095 deleg_perm_type(zfs_deleg_note_t note)
4096 {
4097         /* subcommands */
4098         switch (note) {
4099                 /* SUBCOMMANDS */
4100                 /* OTHER */
4101         case ZFS_DELEG_NOTE_GROUPQUOTA:
4102         case ZFS_DELEG_NOTE_GROUPUSED:
4103         case ZFS_DELEG_NOTE_USERPROP:
4104         case ZFS_DELEG_NOTE_USERQUOTA:
4105         case ZFS_DELEG_NOTE_USERUSED:
4106                 /* other */
4107                 return (gettext("other"));
4108         default:
4109                 return (gettext("subcommand"));
4110         }
4111 }
4112
4113 static int inline
4114 who_type2weight(zfs_deleg_who_type_t who_type)
4115 {
4116         int res;
4117         switch (who_type) {
4118                 case ZFS_DELEG_NAMED_SET_SETS:
4119                 case ZFS_DELEG_NAMED_SET:
4120                         res = 0;
4121                         break;
4122                 case ZFS_DELEG_CREATE_SETS:
4123                 case ZFS_DELEG_CREATE:
4124                         res = 1;
4125                         break;
4126                 case ZFS_DELEG_USER_SETS:
4127                 case ZFS_DELEG_USER:
4128                         res = 2;
4129                         break;
4130                 case ZFS_DELEG_GROUP_SETS:
4131                 case ZFS_DELEG_GROUP:
4132                         res = 3;
4133                         break;
4134                 case ZFS_DELEG_EVERYONE_SETS:
4135                 case ZFS_DELEG_EVERYONE:
4136                         res = 4;
4137                         break;
4138                 default:
4139                         res = -1;
4140         }
4141
4142         return (res);
4143 }
4144
4145 /* ARGSUSED */
4146 static int
4147 who_perm_compare(const void *larg, const void *rarg, void *unused)
4148 {
4149         const who_perm_node_t *l = larg;
4150         const who_perm_node_t *r = rarg;
4151         zfs_deleg_who_type_t ltype = l->who_perm.who_type;
4152         zfs_deleg_who_type_t rtype = r->who_perm.who_type;
4153         int lweight = who_type2weight(ltype);
4154         int rweight = who_type2weight(rtype);
4155         int res = lweight - rweight;
4156         if (res == 0)
4157                 res = strncmp(l->who_perm.who_name, r->who_perm.who_name,
4158                     ZFS_MAX_DELEG_NAME-1);
4159
4160         if (res == 0)
4161                 return (0);
4162         if (res > 0)
4163                 return (1);
4164         else
4165                 return (-1);
4166 }
4167
4168 /* ARGSUSED */
4169 static int
4170 deleg_perm_compare(const void *larg, const void *rarg, void *unused)
4171 {
4172         const deleg_perm_node_t *l = larg;
4173         const deleg_perm_node_t *r = rarg;
4174         int res =  strncmp(l->dpn_perm.dp_name, r->dpn_perm.dp_name,
4175             ZFS_MAX_DELEG_NAME-1);
4176
4177         if (res == 0)
4178                 return (0);
4179
4180         if (res > 0)
4181                 return (1);
4182         else
4183                 return (-1);
4184 }
4185
4186 static inline void
4187 fs_perm_set_init(fs_perm_set_t *fspset)
4188 {
4189         bzero(fspset, sizeof (fs_perm_set_t));
4190
4191         if ((fspset->fsps_list_pool = uu_list_pool_create("fsps_list_pool",
4192             sizeof (fs_perm_node_t), offsetof(fs_perm_node_t, fspn_list_node),
4193             NULL, UU_DEFAULT)) == NULL)
4194                 nomem();
4195         if ((fspset->fsps_list = uu_list_create(fspset->fsps_list_pool, NULL,
4196             UU_DEFAULT)) == NULL)
4197                 nomem();
4198
4199         if ((fspset->fsps_named_set_avl_pool = uu_avl_pool_create(
4200             "named_set_avl_pool", sizeof (who_perm_node_t), offsetof(
4201             who_perm_node_t, who_avl_node), who_perm_compare,
4202             UU_DEFAULT)) == NULL)
4203                 nomem();
4204
4205         if ((fspset->fsps_who_perm_avl_pool = uu_avl_pool_create(
4206             "who_perm_avl_pool", sizeof (who_perm_node_t), offsetof(
4207             who_perm_node_t, who_avl_node), who_perm_compare,
4208             UU_DEFAULT)) == NULL)
4209                 nomem();
4210
4211         if ((fspset->fsps_deleg_perm_avl_pool = uu_avl_pool_create(
4212             "deleg_perm_avl_pool", sizeof (deleg_perm_node_t), offsetof(
4213             deleg_perm_node_t, dpn_avl_node), deleg_perm_compare, UU_DEFAULT))
4214             == NULL)
4215                 nomem();
4216 }
4217
4218 static inline void fs_perm_fini(fs_perm_t *);
4219 static inline void who_perm_fini(who_perm_t *);
4220
4221 static inline void
4222 fs_perm_set_fini(fs_perm_set_t *fspset)
4223 {
4224         fs_perm_node_t *node = uu_list_first(fspset->fsps_list);
4225
4226         while (node != NULL) {
4227                 fs_perm_node_t *next_node =
4228                     uu_list_next(fspset->fsps_list, node);
4229                 fs_perm_t *fsperm = &node->fspn_fsperm;
4230                 fs_perm_fini(fsperm);
4231                 uu_list_remove(fspset->fsps_list, node);
4232                 free(node);
4233                 node = next_node;
4234         }
4235
4236         uu_avl_pool_destroy(fspset->fsps_named_set_avl_pool);
4237         uu_avl_pool_destroy(fspset->fsps_who_perm_avl_pool);
4238         uu_avl_pool_destroy(fspset->fsps_deleg_perm_avl_pool);
4239 }
4240
4241 static inline void
4242 deleg_perm_init(deleg_perm_t *deleg_perm, zfs_deleg_who_type_t type,
4243     const char *name)
4244 {
4245         deleg_perm->dp_who_type = type;
4246         deleg_perm->dp_name = name;
4247 }
4248
4249 static inline void
4250 who_perm_init(who_perm_t *who_perm, fs_perm_t *fsperm,
4251     zfs_deleg_who_type_t type, const char *name)
4252 {
4253         uu_avl_pool_t   *pool;
4254         pool = fsperm->fsp_set->fsps_deleg_perm_avl_pool;
4255
4256         bzero(who_perm, sizeof (who_perm_t));
4257
4258         if ((who_perm->who_deleg_perm_avl = uu_avl_create(pool, NULL,
4259             UU_DEFAULT)) == NULL)
4260                 nomem();
4261
4262         who_perm->who_type = type;
4263         who_perm->who_name = name;
4264         who_perm->who_fsperm = fsperm;
4265 }
4266
4267 static inline void
4268 who_perm_fini(who_perm_t *who_perm)
4269 {
4270         deleg_perm_node_t *node = uu_avl_first(who_perm->who_deleg_perm_avl);
4271
4272         while (node != NULL) {
4273                 deleg_perm_node_t *next_node =
4274                     uu_avl_next(who_perm->who_deleg_perm_avl, node);
4275
4276                 uu_avl_remove(who_perm->who_deleg_perm_avl, node);
4277                 free(node);
4278                 node = next_node;
4279         }
4280
4281         uu_avl_destroy(who_perm->who_deleg_perm_avl);
4282 }
4283
4284 static inline void
4285 fs_perm_init(fs_perm_t *fsperm, fs_perm_set_t *fspset, const char *fsname)
4286 {
4287         uu_avl_pool_t   *nset_pool = fspset->fsps_named_set_avl_pool;
4288         uu_avl_pool_t   *who_pool = fspset->fsps_who_perm_avl_pool;
4289
4290         bzero(fsperm, sizeof (fs_perm_t));
4291
4292         if ((fsperm->fsp_sc_avl = uu_avl_create(nset_pool, NULL, UU_DEFAULT))
4293             == NULL)
4294                 nomem();
4295
4296         if ((fsperm->fsp_uge_avl = uu_avl_create(who_pool, NULL, UU_DEFAULT))
4297             == NULL)
4298                 nomem();
4299
4300         fsperm->fsp_set = fspset;
4301         fsperm->fsp_name = fsname;
4302 }
4303
4304 static inline void
4305 fs_perm_fini(fs_perm_t *fsperm)
4306 {
4307         who_perm_node_t *node = uu_avl_first(fsperm->fsp_sc_avl);
4308         while (node != NULL) {
4309                 who_perm_node_t *next_node = uu_avl_next(fsperm->fsp_sc_avl,
4310                     node);
4311                 who_perm_t *who_perm = &node->who_perm;
4312                 who_perm_fini(who_perm);
4313                 uu_avl_remove(fsperm->fsp_sc_avl, node);
4314                 free(node);
4315                 node = next_node;
4316         }
4317
4318         node = uu_avl_first(fsperm->fsp_uge_avl);
4319         while (node != NULL) {
4320                 who_perm_node_t *next_node = uu_avl_next(fsperm->fsp_uge_avl,
4321                     node);
4322                 who_perm_t *who_perm = &node->who_perm;
4323                 who_perm_fini(who_perm);
4324                 uu_avl_remove(fsperm->fsp_uge_avl, node);
4325                 free(node);
4326                 node = next_node;
4327         }
4328
4329         uu_avl_destroy(fsperm->fsp_sc_avl);
4330         uu_avl_destroy(fsperm->fsp_uge_avl);
4331 }
4332
4333 static void inline
4334 set_deleg_perm_node(uu_avl_t *avl, deleg_perm_node_t *node,
4335     zfs_deleg_who_type_t who_type, const char *name, char locality)
4336 {
4337         uu_avl_index_t idx = 0;
4338
4339         deleg_perm_node_t *found_node = NULL;
4340         deleg_perm_t    *deleg_perm = &node->dpn_perm;
4341
4342         deleg_perm_init(deleg_perm, who_type, name);
4343
4344         if ((found_node = uu_avl_find(avl, node, NULL, &idx))
4345             == NULL)
4346                 uu_avl_insert(avl, node, idx);
4347         else {
4348                 node = found_node;
4349                 deleg_perm = &node->dpn_perm;
4350         }
4351
4352
4353         switch (locality) {
4354         case ZFS_DELEG_LOCAL:
4355                 deleg_perm->dp_local = B_TRUE;
4356                 break;
4357         case ZFS_DELEG_DESCENDENT:
4358                 deleg_perm->dp_descend = B_TRUE;
4359                 break;
4360         case ZFS_DELEG_NA:
4361                 break;
4362         default:
4363                 assert(B_FALSE); /* invalid locality */
4364         }
4365 }
4366
4367 static inline int
4368 parse_who_perm(who_perm_t *who_perm, nvlist_t *nvl, char locality)
4369 {
4370         nvpair_t *nvp = NULL;
4371         fs_perm_set_t *fspset = who_perm->who_fsperm->fsp_set;
4372         uu_avl_t *avl = who_perm->who_deleg_perm_avl;
4373         zfs_deleg_who_type_t who_type = who_perm->who_type;
4374
4375         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4376                 const char *name = nvpair_name(nvp);
4377                 data_type_t type = nvpair_type(nvp);
4378                 uu_avl_pool_t *avl_pool = fspset->fsps_deleg_perm_avl_pool;
4379                 deleg_perm_node_t *node =
4380                     safe_malloc(sizeof (deleg_perm_node_t));
4381
4382                 VERIFY(type == DATA_TYPE_BOOLEAN);
4383
4384                 uu_avl_node_init(node, &node->dpn_avl_node, avl_pool);
4385                 set_deleg_perm_node(avl, node, who_type, name, locality);
4386         }
4387
4388         return (0);
4389 }
4390
4391 static inline int
4392 parse_fs_perm(fs_perm_t *fsperm, nvlist_t *nvl)
4393 {
4394         nvpair_t *nvp = NULL;
4395         fs_perm_set_t *fspset = fsperm->fsp_set;
4396
4397         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4398                 nvlist_t *nvl2 = NULL;
4399                 const char *name = nvpair_name(nvp);
4400                 uu_avl_t *avl = NULL;
4401                 uu_avl_pool_t *avl_pool = NULL;
4402                 zfs_deleg_who_type_t perm_type = name[0];
4403                 char perm_locality = name[1];
4404                 const char *perm_name = name + 3;
4405                 boolean_t is_set = B_TRUE;
4406                 who_perm_t *who_perm = NULL;
4407
4408                 assert('$' == name[2]);
4409
4410                 if (nvpair_value_nvlist(nvp, &nvl2) != 0)
4411                         return (-1);
4412
4413                 switch (perm_type) {
4414                 case ZFS_DELEG_CREATE:
4415                 case ZFS_DELEG_CREATE_SETS:
4416                 case ZFS_DELEG_NAMED_SET:
4417                 case ZFS_DELEG_NAMED_SET_SETS:
4418                         avl_pool = fspset->fsps_named_set_avl_pool;
4419                         avl = fsperm->fsp_sc_avl;
4420                         break;
4421                 case ZFS_DELEG_USER:
4422                 case ZFS_DELEG_USER_SETS:
4423                 case ZFS_DELEG_GROUP:
4424                 case ZFS_DELEG_GROUP_SETS:
4425                 case ZFS_DELEG_EVERYONE:
4426                 case ZFS_DELEG_EVERYONE_SETS:
4427                         avl_pool = fspset->fsps_who_perm_avl_pool;
4428                         avl = fsperm->fsp_uge_avl;
4429                         break;
4430                 default:
4431                         break;
4432                 }
4433
4434                 if (is_set) {
4435                         who_perm_node_t *found_node = NULL;
4436                         who_perm_node_t *node = safe_malloc(
4437                             sizeof (who_perm_node_t));
4438                         who_perm = &node->who_perm;
4439                         uu_avl_index_t idx = 0;
4440
4441                         uu_avl_node_init(node, &node->who_avl_node, avl_pool);
4442                         who_perm_init(who_perm, fsperm, perm_type, perm_name);
4443
4444                         if ((found_node = uu_avl_find(avl, node, NULL, &idx))
4445                             == NULL) {
4446                                 if (avl == fsperm->fsp_uge_avl) {
4447                                         uid_t rid = 0;
4448                                         struct passwd *p = NULL;
4449                                         struct group *g = NULL;
4450                                         const char *nice_name = NULL;
4451
4452                                         switch (perm_type) {
4453                                         case ZFS_DELEG_USER_SETS:
4454                                         case ZFS_DELEG_USER:
4455                                                 rid = atoi(perm_name);
4456                                                 p = getpwuid(rid);
4457                                                 if (p)
4458                                                         nice_name = p->pw_name;
4459                                                 break;
4460                                         case ZFS_DELEG_GROUP_SETS:
4461                                         case ZFS_DELEG_GROUP:
4462                                                 rid = atoi(perm_name);
4463                                                 g = getgrgid(rid);
4464                                                 if (g)
4465                                                         nice_name = g->gr_name;
4466                                                 break;
4467                                         default:
4468                                                 break;
4469                                         }
4470
4471                                         if (nice_name != NULL)
4472                                                 (void) strlcpy(
4473                                                     node->who_perm.who_ug_name,
4474                                                     nice_name, 256);
4475                                 }
4476
4477                                 uu_avl_insert(avl, node, idx);
4478                         } else {
4479                                 node = found_node;
4480                                 who_perm = &node->who_perm;
4481                         }
4482                 }
4483
4484                 (void) parse_who_perm(who_perm, nvl2, perm_locality);
4485         }
4486
4487         return (0);
4488 }
4489
4490 static inline int
4491 parse_fs_perm_set(fs_perm_set_t *fspset, nvlist_t *nvl)
4492 {
4493         nvpair_t *nvp = NULL;
4494         uu_avl_index_t idx = 0;
4495
4496         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4497                 nvlist_t *nvl2 = NULL;
4498                 const char *fsname = nvpair_name(nvp);
4499                 data_type_t type = nvpair_type(nvp);
4500                 fs_perm_t *fsperm = NULL;
4501                 fs_perm_node_t *node = safe_malloc(sizeof (fs_perm_node_t));
4502                 if (node == NULL)
4503                         nomem();
4504
4505                 fsperm = &node->fspn_fsperm;
4506
4507                 VERIFY(DATA_TYPE_NVLIST == type);
4508
4509                 uu_list_node_init(node, &node->fspn_list_node,
4510                     fspset->fsps_list_pool);
4511
4512                 idx = uu_list_numnodes(fspset->fsps_list);
4513                 fs_perm_init(fsperm, fspset, fsname);
4514
4515                 if (nvpair_value_nvlist(nvp, &nvl2) != 0)
4516                         return (-1);
4517
4518                 (void) parse_fs_perm(fsperm, nvl2);
4519
4520                 uu_list_insert(fspset->fsps_list, node, idx);
4521         }
4522
4523         return (0);
4524 }
4525
4526 static inline const char *
4527 deleg_perm_comment(zfs_deleg_note_t note)
4528 {
4529         const char *str = "";
4530
4531         /* subcommands */
4532         switch (note) {
4533                 /* SUBCOMMANDS */
4534         case ZFS_DELEG_NOTE_ALLOW:
4535                 str = gettext("Must also have the permission that is being"
4536                     "\n\t\t\t\tallowed");
4537                 break;
4538         case ZFS_DELEG_NOTE_CLONE:
4539                 str = gettext("Must also have the 'create' ability and 'mount'"
4540                     "\n\t\t\t\tability in the origin file system");
4541                 break;
4542         case ZFS_DELEG_NOTE_CREATE:
4543                 str = gettext("Must also have the 'mount' ability");
4544                 break;
4545         case ZFS_DELEG_NOTE_DESTROY:
4546                 str = gettext("Must also have the 'mount' ability");
4547                 break;
4548         case ZFS_DELEG_NOTE_DIFF:
4549                 str = gettext("Allows lookup of paths within a dataset;"
4550                     "\n\t\t\t\tgiven an object number. Ordinary users need this"
4551                     "\n\t\t\t\tin order to use zfs diff");
4552                 break;
4553         case ZFS_DELEG_NOTE_HOLD:
4554                 str = gettext("Allows adding a user hold to a snapshot");
4555                 break;
4556         case ZFS_DELEG_NOTE_MOUNT:
4557                 str = gettext("Allows mount/umount of ZFS datasets");
4558                 break;
4559         case ZFS_DELEG_NOTE_PROMOTE:
4560                 str = gettext("Must also have the 'mount'\n\t\t\t\tand"
4561                     " 'promote' ability in the origin file system");
4562                 break;
4563         case ZFS_DELEG_NOTE_RECEIVE:
4564                 str = gettext("Must also have the 'mount' and 'create'"
4565                     " ability");
4566                 break;
4567         case ZFS_DELEG_NOTE_RELEASE:
4568                 str = gettext("Allows releasing a user hold which\n\t\t\t\t"
4569                     "might destroy the snapshot");
4570                 break;
4571         case ZFS_DELEG_NOTE_RENAME:
4572                 str = gettext("Must also have the 'mount' and 'create'"
4573                     "\n\t\t\t\tability in the new parent");
4574                 break;
4575         case ZFS_DELEG_NOTE_ROLLBACK:
4576                 str = gettext("");
4577                 break;
4578         case ZFS_DELEG_NOTE_SEND:
4579                 str = gettext("");
4580                 break;
4581         case ZFS_DELEG_NOTE_SHARE:
4582                 str = gettext("Allows sharing file systems over NFS or SMB"
4583                     "\n\t\t\t\tprotocols");
4584                 break;
4585         case ZFS_DELEG_NOTE_SNAPSHOT:
4586                 str = gettext("");
4587                 break;
4588 /*
4589  *      case ZFS_DELEG_NOTE_VSCAN:
4590  *              str = gettext("");
4591  *              break;
4592  */
4593                 /* OTHER */
4594         case ZFS_DELEG_NOTE_GROUPQUOTA:
4595                 str = gettext("Allows accessing any groupquota@... property");
4596                 break;
4597         case ZFS_DELEG_NOTE_GROUPUSED:
4598                 str = gettext("Allows reading any groupused@... property");
4599                 break;
4600         case ZFS_DELEG_NOTE_USERPROP:
4601                 str = gettext("Allows changing any user property");
4602                 break;
4603         case ZFS_DELEG_NOTE_USERQUOTA:
4604                 str = gettext("Allows accessing any userquota@... property");
4605                 break;
4606         case ZFS_DELEG_NOTE_USERUSED:
4607                 str = gettext("Allows reading any userused@... property");
4608                 break;
4609                 /* other */
4610         default:
4611                 str = "";
4612         }
4613
4614         return (str);
4615 }
4616
4617 struct allow_opts {
4618         boolean_t local;
4619         boolean_t descend;
4620         boolean_t user;
4621         boolean_t group;
4622         boolean_t everyone;
4623         boolean_t create;
4624         boolean_t set;
4625         boolean_t recursive; /* unallow only */
4626         boolean_t prt_usage;
4627
4628         boolean_t prt_perms;
4629         char *who;
4630         char *perms;
4631         const char *dataset;
4632 };
4633
4634 static inline int
4635 prop_cmp(const void *a, const void *b)
4636 {
4637         const char *str1 = *(const char **)a;
4638         const char *str2 = *(const char **)b;
4639         return (strcmp(str1, str2));
4640 }
4641
4642 static void
4643 allow_usage(boolean_t un, boolean_t requested, const char *msg)
4644 {
4645         const char *opt_desc[] = {
4646                 "-h", gettext("show this help message and exit"),
4647                 "-l", gettext("set permission locally"),
4648                 "-d", gettext("set permission for descents"),
4649                 "-u", gettext("set permission for user"),
4650                 "-g", gettext("set permission for group"),
4651                 "-e", gettext("set permission for everyone"),
4652                 "-c", gettext("set create time permission"),
4653                 "-s", gettext("define permission set"),
4654                 /* unallow only */
4655                 "-r", gettext("remove permissions recursively"),
4656         };
4657         size_t unallow_size = sizeof (opt_desc) / sizeof (char *);
4658         size_t allow_size = unallow_size - 2;
4659         const char *props[ZFS_NUM_PROPS];
4660         int i;
4661         size_t count = 0;
4662         FILE *fp = requested ? stdout : stderr;
4663         zprop_desc_t *pdtbl = zfs_prop_get_table();
4664         const char *fmt = gettext("%-16s %-14s\t%s\n");
4665
4666         (void) fprintf(fp, gettext("Usage: %s\n"), get_usage(un ? HELP_UNALLOW :
4667             HELP_ALLOW));
4668         (void) fprintf(fp, gettext("Options:\n"));
4669         for (i = 0; i < (un ? unallow_size : allow_size); i++) {
4670                 const char *opt = opt_desc[i++];
4671                 const char *optdsc = opt_desc[i];
4672                 (void) fprintf(fp, gettext("  %-10s  %s\n"), opt, optdsc);
4673         }
4674
4675         (void) fprintf(fp, gettext("\nThe following permissions are "
4676             "supported:\n\n"));
4677         (void) fprintf(fp, fmt, gettext("NAME"), gettext("TYPE"),
4678             gettext("NOTES"));
4679         for (i = 0; i < ZFS_NUM_DELEG_NOTES; i++) {
4680                 const char *perm_name = zfs_deleg_perm_tbl[i].z_perm;
4681                 zfs_deleg_note_t perm_note = zfs_deleg_perm_tbl[i].z_note;
4682                 const char *perm_type = deleg_perm_type(perm_note);
4683                 const char *perm_comment = deleg_perm_comment(perm_note);
4684                 (void) fprintf(fp, fmt, perm_name, perm_type, perm_comment);
4685         }
4686
4687         for (i = 0; i < ZFS_NUM_PROPS; i++) {
4688                 zprop_desc_t *pd = &pdtbl[i];
4689                 if (pd->pd_visible != B_TRUE)
4690                         continue;
4691
4692                 if (pd->pd_attr == PROP_READONLY)
4693                         continue;
4694
4695                 props[count++] = pd->pd_name;
4696         }
4697         props[count] = NULL;
4698
4699         qsort(props, count, sizeof (char *), prop_cmp);
4700
4701         for (i = 0; i < count; i++)
4702                 (void) fprintf(fp, fmt, props[i], gettext("property"), "");
4703
4704         if (msg != NULL)
4705                 (void) fprintf(fp, gettext("\nzfs: error: %s"), msg);
4706
4707         exit(requested ? 0 : 2);
4708 }
4709
4710 static inline const char *
4711 munge_args(int argc, char **argv, boolean_t un, size_t expected_argc,
4712     char **permsp)
4713 {
4714         if (un && argc == expected_argc - 1)
4715                 *permsp = NULL;
4716         else if (argc == expected_argc)
4717                 *permsp = argv[argc - 2];
4718         else
4719                 allow_usage(un, B_FALSE,
4720                     gettext("wrong number of parameters\n"));
4721
4722         return (argv[argc - 1]);
4723 }
4724
4725 static void
4726 parse_allow_args(int argc, char **argv, boolean_t un, struct allow_opts *opts)
4727 {
4728         int uge_sum = opts->user + opts->group + opts->everyone;
4729         int csuge_sum = opts->create + opts->set + uge_sum;
4730         int ldcsuge_sum = csuge_sum + opts->local + opts->descend;
4731         int all_sum = un ? ldcsuge_sum + opts->recursive : ldcsuge_sum;
4732
4733         if (uge_sum > 1)
4734                 allow_usage(un, B_FALSE,
4735                     gettext("-u, -g, and -e are mutually exclusive\n"));
4736
4737         if (opts->prt_usage) {
4738                 if (argc == 0 && all_sum == 0)
4739                         allow_usage(un, B_TRUE, NULL);
4740                 else
4741                         usage(B_FALSE);
4742         }
4743
4744         if (opts->set) {
4745                 if (csuge_sum > 1)
4746                         allow_usage(un, B_FALSE,
4747                             gettext("invalid options combined with -s\n"));
4748
4749                 opts->dataset = munge_args(argc, argv, un, 3, &opts->perms);
4750                 if (argv[0][0] != '@')
4751                         allow_usage(un, B_FALSE,
4752                             gettext("invalid set name: missing '@' prefix\n"));
4753                 opts->who = argv[0];
4754         } else if (opts->create) {
4755                 if (ldcsuge_sum > 1)
4756                         allow_usage(un, B_FALSE,
4757                             gettext("invalid options combined with -c\n"));
4758                 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
4759         } else if (opts->everyone) {
4760                 if (csuge_sum > 1)
4761                         allow_usage(un, B_FALSE,
4762                             gettext("invalid options combined with -e\n"));
4763                 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
4764         } else if (uge_sum == 0 && argc > 0 && strcmp(argv[0], "everyone")
4765             == 0) {
4766                 opts->everyone = B_TRUE;
4767                 argc--;
4768                 argv++;
4769                 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
4770         } else if (argc == 1 && !un) {
4771                 opts->prt_perms = B_TRUE;
4772                 opts->dataset = argv[argc-1];
4773         } else {
4774                 opts->dataset = munge_args(argc, argv, un, 3, &opts->perms);
4775                 opts->who = argv[0];
4776         }
4777
4778         if (!opts->local && !opts->descend) {
4779                 opts->local = B_TRUE;
4780                 opts->descend = B_TRUE;
4781         }
4782 }
4783
4784 static void
4785 store_allow_perm(zfs_deleg_who_type_t type, boolean_t local, boolean_t descend,
4786     const char *who, char *perms, nvlist_t *top_nvl)
4787 {
4788         int i;
4789         char ld[2] = { '\0', '\0' };
4790         char who_buf[ZFS_MAXNAMELEN+32];
4791         char base_type = ZFS_DELEG_WHO_UNKNOWN;
4792         char set_type = ZFS_DELEG_WHO_UNKNOWN;
4793         nvlist_t *base_nvl = NULL;
4794         nvlist_t *set_nvl = NULL;
4795         nvlist_t *nvl;
4796
4797         if (nvlist_alloc(&base_nvl, NV_UNIQUE_NAME, 0) != 0)
4798                 nomem();
4799         if (nvlist_alloc(&set_nvl, NV_UNIQUE_NAME, 0) !=  0)
4800                 nomem();
4801
4802         switch (type) {
4803         case ZFS_DELEG_NAMED_SET_SETS:
4804         case ZFS_DELEG_NAMED_SET:
4805                 set_type = ZFS_DELEG_NAMED_SET_SETS;
4806                 base_type = ZFS_DELEG_NAMED_SET;
4807                 ld[0] = ZFS_DELEG_NA;
4808                 break;
4809         case ZFS_DELEG_CREATE_SETS:
4810         case ZFS_DELEG_CREATE:
4811                 set_type = ZFS_DELEG_CREATE_SETS;
4812                 base_type = ZFS_DELEG_CREATE;
4813                 ld[0] = ZFS_DELEG_NA;
4814                 break;
4815         case ZFS_DELEG_USER_SETS:
4816         case ZFS_DELEG_USER:
4817                 set_type = ZFS_DELEG_USER_SETS;
4818                 base_type = ZFS_DELEG_USER;
4819                 if (local)
4820                         ld[0] = ZFS_DELEG_LOCAL;
4821                 if (descend)
4822                         ld[1] = ZFS_DELEG_DESCENDENT;
4823                 break;
4824         case ZFS_DELEG_GROUP_SETS:
4825         case ZFS_DELEG_GROUP:
4826                 set_type = ZFS_DELEG_GROUP_SETS;
4827                 base_type = ZFS_DELEG_GROUP;
4828                 if (local)
4829                         ld[0] = ZFS_DELEG_LOCAL;
4830                 if (descend)
4831                         ld[1] = ZFS_DELEG_DESCENDENT;
4832                 break;
4833         case ZFS_DELEG_EVERYONE_SETS:
4834         case ZFS_DELEG_EVERYONE:
4835                 set_type = ZFS_DELEG_EVERYONE_SETS;
4836                 base_type = ZFS_DELEG_EVERYONE;
4837                 if (local)
4838                         ld[0] = ZFS_DELEG_LOCAL;
4839                 if (descend)
4840                         ld[1] = ZFS_DELEG_DESCENDENT;
4841         default:
4842                 break;
4843         }
4844
4845         if (perms != NULL) {
4846                 char *curr = perms;
4847                 char *end = curr + strlen(perms);
4848
4849                 while (curr < end) {
4850                         char *delim = strchr(curr, ',');
4851                         if (delim == NULL)
4852                                 delim = end;
4853                         else
4854                                 *delim = '\0';
4855
4856                         if (curr[0] == '@')
4857                                 nvl = set_nvl;
4858                         else
4859                                 nvl = base_nvl;
4860
4861                         (void) nvlist_add_boolean(nvl, curr);
4862                         if (delim != end)
4863                                 *delim = ',';
4864                         curr = delim + 1;
4865                 }
4866
4867                 for (i = 0; i < 2; i++) {
4868                         char locality = ld[i];
4869                         if (locality == 0)
4870                                 continue;
4871
4872                         if (!nvlist_empty(base_nvl)) {
4873                                 if (who != NULL)
4874                                         (void) snprintf(who_buf,
4875                                             sizeof (who_buf), "%c%c$%s",
4876                                             base_type, locality, who);
4877                                 else
4878                                         (void) snprintf(who_buf,
4879                                             sizeof (who_buf), "%c%c$",
4880                                             base_type, locality);
4881
4882                                 (void) nvlist_add_nvlist(top_nvl, who_buf,
4883                                     base_nvl);
4884                         }
4885
4886
4887                         if (!nvlist_empty(set_nvl)) {
4888                                 if (who != NULL)
4889                                         (void) snprintf(who_buf,
4890                                             sizeof (who_buf), "%c%c$%s",
4891                                             set_type, locality, who);
4892                                 else
4893                                         (void) snprintf(who_buf,
4894                                             sizeof (who_buf), "%c%c$",
4895                                             set_type, locality);
4896
4897                                 (void) nvlist_add_nvlist(top_nvl, who_buf,
4898                                     set_nvl);
4899                         }
4900                 }
4901         } else {
4902                 for (i = 0; i < 2; i++) {
4903                         char locality = ld[i];
4904                         if (locality == 0)
4905                                 continue;
4906
4907                         if (who != NULL)
4908                                 (void) snprintf(who_buf, sizeof (who_buf),
4909                                     "%c%c$%s", base_type, locality, who);
4910                         else
4911                                 (void) snprintf(who_buf, sizeof (who_buf),
4912                                     "%c%c$", base_type, locality);
4913                         (void) nvlist_add_boolean(top_nvl, who_buf);
4914
4915                         if (who != NULL)
4916                                 (void) snprintf(who_buf, sizeof (who_buf),
4917                                     "%c%c$%s", set_type, locality, who);
4918                         else
4919                                 (void) snprintf(who_buf, sizeof (who_buf),
4920                                     "%c%c$", set_type, locality);
4921                         (void) nvlist_add_boolean(top_nvl, who_buf);
4922                 }
4923         }
4924 }
4925
4926 static int
4927 construct_fsacl_list(boolean_t un, struct allow_opts *opts, nvlist_t **nvlp)
4928 {
4929         if (nvlist_alloc(nvlp, NV_UNIQUE_NAME, 0) != 0)
4930                 nomem();
4931
4932         if (opts->set) {
4933                 store_allow_perm(ZFS_DELEG_NAMED_SET, opts->local,
4934                     opts->descend, opts->who, opts->perms, *nvlp);
4935         } else if (opts->create) {
4936                 store_allow_perm(ZFS_DELEG_CREATE, opts->local,
4937                     opts->descend, NULL, opts->perms, *nvlp);
4938         } else if (opts->everyone) {
4939                 store_allow_perm(ZFS_DELEG_EVERYONE, opts->local,
4940                     opts->descend, NULL, opts->perms, *nvlp);
4941         } else {
4942                 char *curr = opts->who;
4943                 char *end = curr + strlen(curr);
4944
4945                 while (curr < end) {
4946                         const char *who;
4947                         zfs_deleg_who_type_t who_type = ZFS_DELEG_WHO_UNKNOWN;
4948                         char *endch;
4949                         char *delim = strchr(curr, ',');
4950                         char errbuf[256];
4951                         char id[64];
4952                         struct passwd *p = NULL;
4953                         struct group *g = NULL;
4954
4955                         uid_t rid;
4956                         if (delim == NULL)
4957                                 delim = end;
4958                         else
4959                                 *delim = '\0';
4960
4961                         rid = (uid_t)strtol(curr, &endch, 0);
4962                         if (opts->user) {
4963                                 who_type = ZFS_DELEG_USER;
4964                                 if (*endch != '\0')
4965                                         p = getpwnam(curr);
4966                                 else
4967                                         p = getpwuid(rid);
4968
4969                                 if (p != NULL)
4970                                         rid = p->pw_uid;
4971                                 else {
4972                                         (void) snprintf(errbuf, 256, gettext(
4973                                             "invalid user %s"), curr);
4974                                         allow_usage(un, B_TRUE, errbuf);
4975                                 }
4976                         } else if (opts->group) {
4977                                 who_type = ZFS_DELEG_GROUP;
4978                                 if (*endch != '\0')
4979                                         g = getgrnam(curr);
4980                                 else
4981                                         g = getgrgid(rid);
4982
4983                                 if (g != NULL)
4984                                         rid = g->gr_gid;
4985                                 else {
4986                                         (void) snprintf(errbuf, 256, gettext(
4987                                             "invalid group %s"),  curr);
4988                                         allow_usage(un, B_TRUE, errbuf);
4989                                 }
4990                         } else {
4991                                 if (*endch != '\0') {
4992                                         p = getpwnam(curr);
4993                                 } else {
4994                                         p = getpwuid(rid);
4995                                 }
4996
4997                                 if (p == NULL) {
4998                                         if (*endch != '\0') {
4999                                                 g = getgrnam(curr);
5000                                         } else {
5001                                                 g = getgrgid(rid);
5002                                         }
5003                                 }
5004
5005                                 if (p != NULL) {
5006                                         who_type = ZFS_DELEG_USER;
5007                                         rid = p->pw_uid;
5008                                 } else if (g != NULL) {
5009                                         who_type = ZFS_DELEG_GROUP;
5010                                         rid = g->gr_gid;
5011                                 } else {
5012                                         (void) snprintf(errbuf, 256, gettext(
5013                                             "invalid user/group %s"), curr);
5014                                         allow_usage(un, B_TRUE, errbuf);
5015                                 }
5016                         }
5017
5018                         (void) sprintf(id, "%u", rid);
5019                         who = id;
5020
5021                         store_allow_perm(who_type, opts->local,
5022                             opts->descend, who, opts->perms, *nvlp);
5023                         curr = delim + 1;
5024                 }
5025         }
5026
5027         return (0);
5028 }
5029
5030 static void
5031 print_set_creat_perms(uu_avl_t *who_avl)
5032 {
5033         const char *sc_title[] = {
5034                 gettext("Permission sets:\n"),
5035                 gettext("Create time permissions:\n"),
5036                 NULL
5037         };
5038         const char **title_ptr = sc_title;
5039         who_perm_node_t *who_node = NULL;
5040         int prev_weight = -1;
5041
5042         for (who_node = uu_avl_first(who_avl); who_node != NULL;
5043             who_node = uu_avl_next(who_avl, who_node)) {
5044                 uu_avl_t *avl = who_node->who_perm.who_deleg_perm_avl;
5045                 zfs_deleg_who_type_t who_type = who_node->who_perm.who_type;
5046                 const char *who_name = who_node->who_perm.who_name;
5047                 int weight = who_type2weight(who_type);
5048                 boolean_t first = B_TRUE;
5049                 deleg_perm_node_t *deleg_node;
5050
5051                 if (prev_weight != weight) {
5052                         (void) printf("%s", *title_ptr++);
5053                         prev_weight = weight;
5054                 }
5055
5056                 if (who_name == NULL || strnlen(who_name, 1) == 0)
5057                         (void) printf("\t");
5058                 else
5059                         (void) printf("\t%s ", who_name);
5060
5061                 for (deleg_node = uu_avl_first(avl); deleg_node != NULL;
5062                     deleg_node = uu_avl_next(avl, deleg_node)) {
5063                         if (first) {
5064                                 (void) printf("%s",
5065                                     deleg_node->dpn_perm.dp_name);
5066                                 first = B_FALSE;
5067                         } else
5068                                 (void) printf(",%s",
5069                                     deleg_node->dpn_perm.dp_name);
5070                 }
5071
5072                 (void) printf("\n");
5073         }
5074 }
5075
5076 static void inline
5077 print_uge_deleg_perms(uu_avl_t *who_avl, boolean_t local, boolean_t descend,
5078     const char *title)
5079 {
5080         who_perm_node_t *who_node = NULL;
5081         boolean_t prt_title = B_TRUE;
5082         uu_avl_walk_t *walk;
5083
5084         if ((walk = uu_avl_walk_start(who_avl, UU_WALK_ROBUST)) == NULL)
5085                 nomem();
5086
5087         while ((who_node = uu_avl_walk_next(walk)) != NULL) {
5088                 const char *who_name = who_node->who_perm.who_name;
5089                 const char *nice_who_name = who_node->who_perm.who_ug_name;
5090                 uu_avl_t *avl = who_node->who_perm.who_deleg_perm_avl;
5091                 zfs_deleg_who_type_t who_type = who_node->who_perm.who_type;
5092                 char delim = ' ';
5093                 deleg_perm_node_t *deleg_node;
5094                 boolean_t prt_who = B_TRUE;
5095
5096                 for (deleg_node = uu_avl_first(avl);
5097                     deleg_node != NULL;
5098                     deleg_node = uu_avl_next(avl, deleg_node)) {
5099                         if (local != deleg_node->dpn_perm.dp_local ||
5100                             descend != deleg_node->dpn_perm.dp_descend)
5101                                 continue;
5102
5103                         if (prt_who) {
5104                                 const char *who = NULL;
5105                                 if (prt_title) {
5106                                         prt_title = B_FALSE;
5107                                         (void) printf("%s", title);
5108                                 }
5109
5110                                 switch (who_type) {
5111                                 case ZFS_DELEG_USER_SETS:
5112                                 case ZFS_DELEG_USER:
5113                                         who = gettext("user");
5114                                         if (nice_who_name)
5115                                                 who_name  = nice_who_name;
5116                                         break;
5117                                 case ZFS_DELEG_GROUP_SETS:
5118                                 case ZFS_DELEG_GROUP:
5119                                         who = gettext("group");
5120                                         if (nice_who_name)
5121                                                 who_name  = nice_who_name;
5122                                         break;
5123                                 case ZFS_DELEG_EVERYONE_SETS:
5124                                 case ZFS_DELEG_EVERYONE:
5125                                         who = gettext("everyone");
5126                                         who_name = NULL;
5127                                 default:
5128                                         break;
5129                                 }
5130
5131                                 prt_who = B_FALSE;
5132                                 if (who_name == NULL)
5133                                         (void) printf("\t%s", who);
5134                                 else
5135                                         (void) printf("\t%s %s", who, who_name);
5136                         }
5137
5138                         (void) printf("%c%s", delim,
5139                             deleg_node->dpn_perm.dp_name);
5140                         delim = ',';
5141                 }
5142
5143                 if (!prt_who)
5144                         (void) printf("\n");
5145         }
5146
5147         uu_avl_walk_end(walk);
5148 }
5149
5150 static void
5151 print_fs_perms(fs_perm_set_t *fspset)
5152 {
5153         fs_perm_node_t *node = NULL;
5154         char buf[ZFS_MAXNAMELEN+32];
5155         const char *dsname = buf;
5156
5157         for (node = uu_list_first(fspset->fsps_list); node != NULL;
5158             node = uu_list_next(fspset->fsps_list, node)) {
5159                 uu_avl_t *sc_avl = node->fspn_fsperm.fsp_sc_avl;
5160                 uu_avl_t *uge_avl = node->fspn_fsperm.fsp_uge_avl;
5161                 int left = 0;
5162
5163                 (void) snprintf(buf, ZFS_MAXNAMELEN+32,
5164                     gettext("---- Permissions on %s "),
5165                     node->fspn_fsperm.fsp_name);
5166                 (void) printf("%s", dsname);
5167                 left = 70 - strlen(buf);
5168                 while (left-- > 0)
5169                         (void) printf("-");
5170                 (void) printf("\n");
5171
5172                 print_set_creat_perms(sc_avl);
5173                 print_uge_deleg_perms(uge_avl, B_TRUE, B_FALSE,
5174                     gettext("Local permissions:\n"));
5175                 print_uge_deleg_perms(uge_avl, B_FALSE, B_TRUE,
5176                     gettext("Descendent permissions:\n"));
5177                 print_uge_deleg_perms(uge_avl, B_TRUE, B_TRUE,
5178                     gettext("Local+Descendent permissions:\n"));
5179         }
5180 }
5181
5182 static fs_perm_set_t fs_perm_set = { NULL, NULL, NULL, NULL };
5183
5184 struct deleg_perms {
5185         boolean_t un;
5186         nvlist_t *nvl;
5187 };
5188
5189 static int
5190 set_deleg_perms(zfs_handle_t *zhp, void *data)
5191 {
5192         struct deleg_perms *perms = (struct deleg_perms *)data;
5193         zfs_type_t zfs_type = zfs_get_type(zhp);
5194
5195         if (zfs_type != ZFS_TYPE_FILESYSTEM && zfs_type != ZFS_TYPE_VOLUME)
5196                 return (0);
5197
5198         return (zfs_set_fsacl(zhp, perms->un, perms->nvl));
5199 }
5200
5201 static int
5202 zfs_do_allow_unallow_impl(int argc, char **argv, boolean_t un)
5203 {
5204         zfs_handle_t *zhp;
5205         nvlist_t *perm_nvl = NULL;
5206         nvlist_t *update_perm_nvl = NULL;
5207         int error = 1;
5208         int c;
5209         struct allow_opts opts = { 0 };
5210
5211         const char *optstr = un ? "ldugecsrh" : "ldugecsh";
5212
5213         /* check opts */
5214         while ((c = getopt(argc, argv, optstr)) != -1) {
5215                 switch (c) {
5216                 case 'l':
5217                         opts.local = B_TRUE;
5218                         break;
5219                 case 'd':
5220                         opts.descend = B_TRUE;
5221                         break;
5222                 case 'u':
5223                         opts.user = B_TRUE;
5224                         break;
5225                 case 'g':
5226                         opts.group = B_TRUE;
5227                         break;
5228                 case 'e':
5229                         opts.everyone = B_TRUE;
5230                         break;
5231                 case 's':
5232                         opts.set = B_TRUE;
5233                         break;
5234                 case 'c':
5235                         opts.create = B_TRUE;
5236                         break;
5237                 case 'r':
5238                         opts.recursive = B_TRUE;
5239                         break;
5240                 case ':':
5241                         (void) fprintf(stderr, gettext("missing argument for "
5242                             "'%c' option\n"), optopt);
5243                         usage(B_FALSE);
5244                         break;
5245                 case 'h':
5246                         opts.prt_usage = B_TRUE;
5247                         break;
5248                 case '?':
5249                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5250                             optopt);
5251                         usage(B_FALSE);
5252                 }
5253         }
5254
5255         argc -= optind;
5256         argv += optind;
5257
5258         /* check arguments */
5259         parse_allow_args(argc, argv, un, &opts);
5260
5261         /* try to open the dataset */
5262         if ((zhp = zfs_open(g_zfs, opts.dataset, ZFS_TYPE_FILESYSTEM |
5263             ZFS_TYPE_VOLUME)) == NULL) {
5264                 (void) fprintf(stderr, "Failed to open dataset: %s\n",
5265                     opts.dataset);
5266                 return (-1);
5267         }
5268
5269         if (zfs_get_fsacl(zhp, &perm_nvl) != 0)
5270                 goto cleanup2;
5271
5272         fs_perm_set_init(&fs_perm_set);
5273         if (parse_fs_perm_set(&fs_perm_set, perm_nvl) != 0) {
5274                 (void) fprintf(stderr, "Failed to parse fsacl permissions\n");
5275                 goto cleanup1;
5276         }
5277
5278         if (opts.prt_perms)
5279                 print_fs_perms(&fs_perm_set);
5280         else {
5281                 (void) construct_fsacl_list(un, &opts, &update_perm_nvl);
5282                 if (zfs_set_fsacl(zhp, un, update_perm_nvl) != 0)
5283                         goto cleanup0;
5284
5285                 if (un && opts.recursive) {
5286                         struct deleg_perms data = { un, update_perm_nvl };
5287                         if (zfs_iter_filesystems(zhp, set_deleg_perms,
5288                             &data) != 0)
5289                                 goto cleanup0;
5290                 }
5291         }
5292
5293         error = 0;
5294
5295 cleanup0:
5296         nvlist_free(perm_nvl);
5297         nvlist_free(update_perm_nvl);
5298 cleanup1:
5299         fs_perm_set_fini(&fs_perm_set);
5300 cleanup2:
5301         zfs_close(zhp);
5302
5303         return (error);
5304 }
5305
5306 static int
5307 zfs_do_allow(int argc, char **argv)
5308 {
5309         return (zfs_do_allow_unallow_impl(argc, argv, B_FALSE));
5310 }
5311
5312 static int
5313 zfs_do_unallow(int argc, char **argv)
5314 {
5315         return (zfs_do_allow_unallow_impl(argc, argv, B_TRUE));
5316 }
5317
5318 static int
5319 zfs_do_hold_rele_impl(int argc, char **argv, boolean_t holding)
5320 {
5321         int errors = 0;
5322         int i;
5323         const char *tag;
5324         boolean_t recursive = B_FALSE;
5325         const char *opts = holding ? "rt" : "r";
5326         int c;
5327
5328         /* check options */
5329         while ((c = getopt(argc, argv, opts)) != -1) {
5330                 switch (c) {
5331                 case 'r':
5332                         recursive = B_TRUE;
5333                         break;
5334                 case '?':
5335                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5336                             optopt);
5337                         usage(B_FALSE);
5338                 }
5339         }
5340
5341         argc -= optind;
5342         argv += optind;
5343
5344         /* check number of arguments */
5345         if (argc < 2)
5346                 usage(B_FALSE);
5347
5348         tag = argv[0];
5349         --argc;
5350         ++argv;
5351
5352         if (holding && tag[0] == '.') {
5353                 /* tags starting with '.' are reserved for libzfs */
5354                 (void) fprintf(stderr, gettext("tag may not start with '.'\n"));
5355                 usage(B_FALSE);
5356         }
5357
5358         for (i = 0; i < argc; ++i) {
5359                 zfs_handle_t *zhp;
5360                 char parent[ZFS_MAXNAMELEN];
5361                 const char *delim;
5362                 char *path = argv[i];
5363
5364                 delim = strchr(path, '@');
5365                 if (delim == NULL) {
5366                         (void) fprintf(stderr,
5367                             gettext("'%s' is not a snapshot\n"), path);
5368                         ++errors;
5369                         continue;
5370                 }
5371                 (void) strncpy(parent, path, delim - path);
5372                 parent[delim - path] = '\0';
5373
5374                 zhp = zfs_open(g_zfs, parent,
5375                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
5376                 if (zhp == NULL) {
5377                         ++errors;
5378                         continue;
5379                 }
5380                 if (holding) {
5381                         if (zfs_hold(zhp, delim+1, tag, recursive, -1) != 0)
5382                                 ++errors;
5383                 } else {
5384                         if (zfs_release(zhp, delim+1, tag, recursive) != 0)
5385                                 ++errors;
5386                 }
5387                 zfs_close(zhp);
5388         }
5389
5390         return (errors != 0);
5391 }
5392
5393 /*
5394  * zfs hold [-r] [-t] <tag> <snap> ...
5395  *
5396  *      -r      Recursively hold
5397  *
5398  * Apply a user-hold with the given tag to the list of snapshots.
5399  */
5400 static int
5401 zfs_do_hold(int argc, char **argv)
5402 {
5403         return (zfs_do_hold_rele_impl(argc, argv, B_TRUE));
5404 }
5405
5406 /*
5407  * zfs release [-r] <tag> <snap> ...
5408  *
5409  *      -r      Recursively release
5410  *
5411  * Release a user-hold with the given tag from the list of snapshots.
5412  */
5413 static int
5414 zfs_do_release(int argc, char **argv)
5415 {
5416         return (zfs_do_hold_rele_impl(argc, argv, B_FALSE));
5417 }
5418
5419 typedef struct holds_cbdata {
5420         boolean_t       cb_recursive;
5421         const char      *cb_snapname;
5422         nvlist_t        **cb_nvlp;
5423         size_t          cb_max_namelen;
5424         size_t          cb_max_taglen;
5425 } holds_cbdata_t;
5426
5427 #define STRFTIME_FMT_STR "%a %b %e %k:%M %Y"
5428 #define DATETIME_BUF_LEN (32)
5429 /*
5430  *
5431  */
5432 static void
5433 print_holds(boolean_t scripted, int nwidth, int tagwidth, nvlist_t *nvl)
5434 {
5435         int i;
5436         nvpair_t *nvp = NULL;
5437         char *hdr_cols[] = { "NAME", "TAG", "TIMESTAMP" };
5438         const char *col;
5439
5440         if (!scripted) {
5441                 for (i = 0; i < 3; i++) {
5442                         col = gettext(hdr_cols[i]);
5443                         if (i < 2)
5444                                 (void) printf("%-*s  ", i ? tagwidth : nwidth,
5445                                     col);
5446                         else
5447                                 (void) printf("%s\n", col);
5448                 }
5449         }
5450
5451         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
5452                 char *zname = nvpair_name(nvp);
5453                 nvlist_t *nvl2;
5454                 nvpair_t *nvp2 = NULL;
5455                 (void) nvpair_value_nvlist(nvp, &nvl2);
5456                 while ((nvp2 = nvlist_next_nvpair(nvl2, nvp2)) != NULL) {
5457                         char tsbuf[DATETIME_BUF_LEN];
5458                         char *tagname = nvpair_name(nvp2);
5459                         uint64_t val = 0;
5460                         time_t time;
5461                         struct tm t;
5462                         char sep = scripted ? '\t' : ' ';
5463                         int sepnum = scripted ? 1 : 2;
5464
5465                         (void) nvpair_value_uint64(nvp2, &val);
5466                         time = (time_t)val;
5467                         (void) localtime_r(&time, &t);
5468                         (void) strftime(tsbuf, DATETIME_BUF_LEN,
5469                             gettext(STRFTIME_FMT_STR), &t);
5470
5471                         (void) printf("%-*s%*c%-*s%*c%s\n", nwidth, zname,
5472                             sepnum, sep, tagwidth, tagname, sepnum, sep, tsbuf);
5473                 }
5474         }
5475 }
5476
5477 /*
5478  * Generic callback function to list a dataset or snapshot.
5479  */
5480 static int
5481 holds_callback(zfs_handle_t *zhp, void *data)
5482 {
5483         holds_cbdata_t *cbp = data;
5484         nvlist_t *top_nvl = *cbp->cb_nvlp;
5485         nvlist_t *nvl = NULL;
5486         nvpair_t *nvp = NULL;
5487         const char *zname = zfs_get_name(zhp);
5488         size_t znamelen = strnlen(zname, ZFS_MAXNAMELEN);
5489
5490         if (cbp->cb_recursive) {
5491                 const char *snapname;
5492                 char *delim  = strchr(zname, '@');
5493                 if (delim == NULL)
5494                         return (0);
5495
5496                 snapname = delim + 1;
5497                 if (strcmp(cbp->cb_snapname, snapname))
5498                         return (0);
5499         }
5500
5501         if (zfs_get_holds(zhp, &nvl) != 0)
5502                 return (-1);
5503
5504         if (znamelen > cbp->cb_max_namelen)
5505                 cbp->cb_max_namelen  = znamelen;
5506
5507         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
5508                 const char *tag = nvpair_name(nvp);
5509                 size_t taglen = strnlen(tag, MAXNAMELEN);
5510                 if (taglen > cbp->cb_max_taglen)
5511                         cbp->cb_max_taglen  = taglen;
5512         }
5513
5514         return (nvlist_add_nvlist(top_nvl, zname, nvl));
5515 }
5516
5517 /*
5518  * zfs holds [-r] <snap> ...
5519  *
5520  *      -r      Recursively hold
5521  */
5522 static int
5523 zfs_do_holds(int argc, char **argv)
5524 {
5525         int errors = 0;
5526         int c;
5527         int i;
5528         boolean_t scripted = B_FALSE;
5529         boolean_t recursive = B_FALSE;
5530         const char *opts = "rH";
5531         nvlist_t *nvl;
5532
5533         int types = ZFS_TYPE_SNAPSHOT;
5534         holds_cbdata_t cb = { 0 };
5535
5536         int limit = 0;
5537         int ret = 0;
5538         int flags = 0;
5539
5540         /* check options */
5541         while ((c = getopt(argc, argv, opts)) != -1) {
5542                 switch (c) {
5543                 case 'r':
5544                         recursive = B_TRUE;
5545                         break;
5546                 case 'H':
5547                         scripted = B_TRUE;
5548                         break;
5549                 case '?':
5550                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5551                             optopt);
5552                         usage(B_FALSE);
5553                 }
5554         }
5555
5556         if (recursive) {
5557                 types |= ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME;
5558                 flags |= ZFS_ITER_RECURSE;
5559         }
5560
5561         argc -= optind;
5562         argv += optind;
5563
5564         /* check number of arguments */
5565         if (argc < 1)
5566                 usage(B_FALSE);
5567
5568         if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0)
5569                 nomem();
5570
5571         for (i = 0; i < argc; ++i) {
5572                 char *snapshot = argv[i];
5573                 const char *delim;
5574                 const char *snapname;
5575
5576                 delim = strchr(snapshot, '@');
5577                 if (delim == NULL) {
5578                         (void) fprintf(stderr,
5579                             gettext("'%s' is not a snapshot\n"), snapshot);
5580                         ++errors;
5581                         continue;
5582                 }
5583                 snapname = delim + 1;
5584                 if (recursive)
5585                         snapshot[delim - snapshot] = '\0';
5586
5587                 cb.cb_recursive = recursive;
5588                 cb.cb_snapname = snapname;
5589                 cb.cb_nvlp = &nvl;
5590
5591                 /*
5592                  *  1. collect holds data, set format options
5593                  */
5594                 ret = zfs_for_each(argc, argv, flags, types, NULL, NULL, limit,
5595                     holds_callback, &cb);
5596                 if (ret != 0)
5597                         ++errors;
5598         }
5599
5600         /*
5601          *  2. print holds data
5602          */
5603         print_holds(scripted, cb.cb_max_namelen, cb.cb_max_taglen, nvl);
5604
5605         if (nvlist_empty(nvl))
5606                 (void) fprintf(stderr, gettext("no datasets available\n"));
5607
5608         nvlist_free(nvl);
5609
5610         return (0 != errors);
5611 }
5612
5613 #define CHECK_SPINNER 30
5614 #define SPINNER_TIME 3          /* seconds */
5615 #define MOUNT_TIME 5            /* seconds */
5616
5617 static int
5618 get_one_dataset(zfs_handle_t *zhp, void *data)
5619 {
5620         static char *spin[] = { "-", "\\", "|", "/" };
5621         static int spinval = 0;
5622         static int spincheck = 0;
5623         static time_t last_spin_time = (time_t)0;
5624         get_all_cb_t *cbp = data;
5625         zfs_type_t type = zfs_get_type(zhp);
5626
5627         if (cbp->cb_verbose) {
5628                 if (--spincheck < 0) {
5629                         time_t now = time(NULL);
5630                         if (last_spin_time + SPINNER_TIME < now) {
5631                                 update_progress(spin[spinval++ % 4]);
5632                                 last_spin_time = now;
5633                         }
5634                         spincheck = CHECK_SPINNER;
5635                 }
5636         }
5637
5638         /*
5639          * Iterate over any nested datasets.
5640          */
5641         if (zfs_iter_filesystems(zhp, get_one_dataset, data) != 0) {
5642                 zfs_close(zhp);
5643                 return (1);
5644         }
5645
5646         /*
5647          * Skip any datasets whose type does not match.
5648          */
5649         if ((type & ZFS_TYPE_FILESYSTEM) == 0) {
5650                 zfs_close(zhp);
5651                 return (0);
5652         }
5653         libzfs_add_handle(cbp, zhp);
5654         assert(cbp->cb_used <= cbp->cb_alloc);
5655
5656         return (0);
5657 }
5658
5659 static void
5660 get_all_datasets(zfs_handle_t ***dslist, size_t *count, boolean_t verbose)
5661 {
5662         get_all_cb_t cb = { 0 };
5663         cb.cb_verbose = verbose;
5664         cb.cb_getone = get_one_dataset;
5665
5666         if (verbose)
5667                 set_progress_header(gettext("Reading ZFS config"));
5668         (void) zfs_iter_root(g_zfs, get_one_dataset, &cb);
5669
5670         *dslist = cb.cb_handles;
5671         *count = cb.cb_used;
5672
5673         if (verbose)
5674                 finish_progress(gettext("done."));
5675 }
5676
5677 /*
5678  * Generic callback for sharing or mounting filesystems.  Because the code is so
5679  * similar, we have a common function with an extra parameter to determine which
5680  * mode we are using.
5681  */
5682 #define OP_SHARE        0x1
5683 #define OP_MOUNT        0x2
5684
5685 /*
5686  * Share or mount a dataset.
5687  */
5688 static int
5689 share_mount_one(zfs_handle_t *zhp, int op, int flags, char *protocol,
5690     boolean_t explicit, const char *options)
5691 {
5692         char mountpoint[ZFS_MAXPROPLEN];
5693         char shareopts[ZFS_MAXPROPLEN];
5694         char smbshareopts[ZFS_MAXPROPLEN];
5695         const char *cmdname = op == OP_SHARE ? "share" : "mount";
5696         struct mnttab mnt;
5697         uint64_t zoned, canmount;
5698         boolean_t shared_nfs, shared_smb;
5699
5700         assert(zfs_get_type(zhp) & ZFS_TYPE_FILESYSTEM);
5701
5702         /*
5703          * Check to make sure we can mount/share this dataset.  If we
5704          * are in the global zone and the filesystem is exported to a
5705          * local zone, or if we are in a local zone and the
5706          * filesystem is not exported, then it is an error.
5707          */
5708         zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED);
5709
5710         if (zoned && getzoneid() == GLOBAL_ZONEID) {
5711                 if (!explicit)
5712                         return (0);
5713
5714                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5715                     "dataset is exported to a local zone\n"), cmdname,
5716                     zfs_get_name(zhp));
5717                 return (1);
5718
5719         } else if (!zoned && getzoneid() != GLOBAL_ZONEID) {
5720                 if (!explicit)
5721                         return (0);
5722
5723                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5724                     "permission denied\n"), cmdname,
5725                     zfs_get_name(zhp));
5726                 return (1);
5727         }
5728
5729         /*
5730          * Ignore any filesystems which don't apply to us. This
5731          * includes those with a legacy mountpoint, or those with
5732          * legacy share options.
5733          */
5734         verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
5735             sizeof (mountpoint), NULL, NULL, 0, B_FALSE) == 0);
5736         verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, shareopts,
5737             sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0);
5738         verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshareopts,
5739             sizeof (smbshareopts), NULL, NULL, 0, B_FALSE) == 0);
5740
5741         if (op == OP_SHARE && strcmp(shareopts, "off") == 0 &&
5742             strcmp(smbshareopts, "off") == 0) {
5743                 if (!explicit)
5744                         return (0);
5745
5746                 (void) fprintf(stderr, gettext("cannot share '%s': "
5747                     "legacy share\n"), zfs_get_name(zhp));
5748                 (void) fprintf(stderr, gettext("use share(1M) to "
5749                     "share this filesystem, or set "
5750                     "sharenfs property on\n"));
5751                 return (1);
5752         }
5753
5754         /*
5755          * We cannot share or mount legacy filesystems. If the
5756          * shareopts is non-legacy but the mountpoint is legacy, we
5757          * treat it as a legacy share.
5758          */
5759         if (strcmp(mountpoint, "legacy") == 0) {
5760                 if (!explicit)
5761                         return (0);
5762
5763                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5764                     "legacy mountpoint\n"), cmdname, zfs_get_name(zhp));
5765                 (void) fprintf(stderr, gettext("use %s(1M) to "
5766                     "%s this filesystem\n"), cmdname, cmdname);
5767                 return (1);
5768         }
5769
5770         if (strcmp(mountpoint, "none") == 0) {
5771                 if (!explicit)
5772                         return (0);
5773
5774                 (void) fprintf(stderr, gettext("cannot %s '%s': no "
5775                     "mountpoint set\n"), cmdname, zfs_get_name(zhp));
5776                 return (1);
5777         }
5778
5779         /*
5780          * canmount     explicit        outcome
5781          * on           no              pass through
5782          * on           yes             pass through
5783          * off          no              return 0
5784          * off          yes             display error, return 1
5785          * noauto       no              return 0
5786          * noauto       yes             pass through
5787          */
5788         canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT);
5789         if (canmount == ZFS_CANMOUNT_OFF) {
5790                 if (!explicit)
5791                         return (0);
5792
5793                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5794                     "'canmount' property is set to 'off'\n"), cmdname,
5795                     zfs_get_name(zhp));
5796                 return (1);
5797         } else if (canmount == ZFS_CANMOUNT_NOAUTO && !explicit) {
5798                 return (0);
5799         }
5800
5801         /*
5802          * At this point, we have verified that the mountpoint and/or
5803          * shareopts are appropriate for auto management. If the
5804          * filesystem is already mounted or shared, return (failing
5805          * for explicit requests); otherwise mount or share the
5806          * filesystem.
5807          */
5808         switch (op) {
5809         case OP_SHARE:
5810
5811                 shared_nfs = zfs_is_shared_nfs(zhp, NULL);
5812                 shared_smb = zfs_is_shared_smb(zhp, NULL);
5813
5814                 if ((shared_nfs && shared_smb) ||
5815                     ((shared_nfs && strcmp(shareopts, "on") == 0) &&
5816                     (strcmp(smbshareopts, "off") == 0)) ||
5817                     ((shared_smb && strcmp(smbshareopts, "on") == 0) &&
5818                     (strcmp(shareopts, "off") == 0))) {
5819                         if (!explicit)
5820                                 return (0);
5821
5822                         (void) fprintf(stderr, gettext("cannot share "
5823                             "'%s': filesystem already shared\n"),
5824                             zfs_get_name(zhp));
5825                         return (1);
5826                 }
5827
5828                 if (!zfs_is_mounted(zhp, NULL) &&
5829                     zfs_mount(zhp, NULL, 0) != 0)
5830                         return (1);
5831
5832                 if (protocol == NULL) {
5833                         if (zfs_shareall(zhp) != 0)
5834                                 return (1);
5835                 } else if (strcmp(protocol, "nfs") == 0) {
5836                         if (zfs_share_nfs(zhp))
5837                                 return (1);
5838                 } else if (strcmp(protocol, "smb") == 0) {
5839                         if (zfs_share_smb(zhp))
5840                                 return (1);
5841                 } else {
5842                         (void) fprintf(stderr, gettext("cannot share "
5843                             "'%s': invalid share type '%s' "
5844                             "specified\n"),
5845                             zfs_get_name(zhp), protocol);
5846                         return (1);
5847                 }
5848
5849                 break;
5850
5851         case OP_MOUNT:
5852                 if (options == NULL)
5853                         mnt.mnt_mntopts = "";
5854                 else
5855                         mnt.mnt_mntopts = (char *)options;
5856
5857                 if (!hasmntopt(&mnt, MNTOPT_REMOUNT) &&
5858                     zfs_is_mounted(zhp, NULL)) {
5859                         if (!explicit)
5860                                 return (0);
5861
5862                         (void) fprintf(stderr, gettext("cannot mount "
5863                             "'%s': filesystem already mounted\n"),
5864                             zfs_get_name(zhp));
5865                         return (1);
5866                 }
5867
5868                 if (zfs_mount(zhp, options, flags) != 0)
5869                         return (1);
5870                 break;
5871         }
5872
5873         return (0);
5874 }
5875
5876 /*
5877  * Reports progress in the form "(current/total)".  Not thread-safe.
5878  */
5879 static void
5880 report_mount_progress(int current, int total)
5881 {
5882         static time_t last_progress_time = 0;
5883         time_t now = time(NULL);
5884         char info[32];
5885
5886         /* report 1..n instead of 0..n-1 */
5887         ++current;
5888
5889         /* display header if we're here for the first time */
5890         if (current == 1) {
5891                 set_progress_header(gettext("Mounting ZFS filesystems"));
5892         } else if (current != total && last_progress_time + MOUNT_TIME >= now) {
5893                 /* too soon to report again */
5894                 return;
5895         }
5896
5897         last_progress_time = now;
5898
5899         (void) sprintf(info, "(%d/%d)", current, total);
5900
5901         if (current == total)
5902                 finish_progress(info);
5903         else
5904                 update_progress(info);
5905 }
5906
5907 static void
5908 append_options(char *mntopts, char *newopts)
5909 {
5910         int len = strlen(mntopts);
5911
5912         /* original length plus new string to append plus 1 for the comma */
5913         if (len + 1 + strlen(newopts) >= MNT_LINE_MAX) {
5914                 (void) fprintf(stderr, gettext("the opts argument for "
5915                     "'%s' option is too long (more than %d chars)\n"),
5916                     "-o", MNT_LINE_MAX);
5917                 usage(B_FALSE);
5918         }
5919
5920         if (*mntopts)
5921                 mntopts[len++] = ',';
5922
5923         (void) strcpy(&mntopts[len], newopts);
5924 }
5925
5926 static int
5927 share_mount(int op, int argc, char **argv)
5928 {
5929         int do_all = 0;
5930         boolean_t verbose = B_FALSE;
5931         int c, ret = 0;
5932         char *options = NULL;
5933         int flags = 0;
5934
5935         /* check options */
5936         while ((c = getopt(argc, argv, op == OP_MOUNT ? ":avo:O" : "a"))
5937             != -1) {
5938                 switch (c) {
5939                 case 'a':
5940                         do_all = 1;
5941                         break;
5942                 case 'v':
5943                         verbose = B_TRUE;
5944                         break;
5945                 case 'o':
5946                         if (*optarg == '\0') {
5947                                 (void) fprintf(stderr, gettext("empty mount "
5948                                     "options (-o) specified\n"));
5949                                 usage(B_FALSE);
5950                         }
5951
5952                         if (options == NULL)
5953                                 options = safe_malloc(MNT_LINE_MAX + 1);
5954
5955                         /* option validation is done later */
5956                         append_options(options, optarg);
5957                         break;
5958                 case 'O':
5959                         flags |= MS_OVERLAY;
5960                         break;
5961                 case ':':
5962                         (void) fprintf(stderr, gettext("missing argument for "
5963                             "'%c' option\n"), optopt);
5964                         usage(B_FALSE);
5965                         break;
5966                 case '?':
5967                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5968                             optopt);
5969                         usage(B_FALSE);
5970                 }
5971         }
5972
5973         argc -= optind;
5974         argv += optind;
5975
5976         /* check number of arguments */
5977         if (do_all) {
5978                 zfs_handle_t **dslist = NULL;
5979                 size_t i, count = 0;
5980                 char *protocol = NULL;
5981
5982                 if (op == OP_SHARE && argc > 0) {
5983                         if (strcmp(argv[0], "nfs") != 0 &&
5984                             strcmp(argv[0], "smb") != 0) {
5985                                 (void) fprintf(stderr, gettext("share type "
5986                                     "must be 'nfs' or 'smb'\n"));
5987                                 usage(B_FALSE);
5988                         }
5989                         protocol = argv[0];
5990                         argc--;
5991                         argv++;
5992                 }
5993
5994                 if (argc != 0) {
5995                         (void) fprintf(stderr, gettext("too many arguments\n"));
5996                         usage(B_FALSE);
5997                 }
5998
5999                 start_progress_timer();
6000                 get_all_datasets(&dslist, &count, verbose);
6001
6002                 if (count == 0)
6003                         return (0);
6004
6005                 qsort(dslist, count, sizeof (void *), libzfs_dataset_cmp);
6006
6007                 for (i = 0; i < count; i++) {
6008                         if (verbose)
6009                                 report_mount_progress(i, count);
6010
6011                         if (share_mount_one(dslist[i], op, flags, protocol,
6012                             B_FALSE, options) != 0)
6013                                 ret = 1;
6014                         zfs_close(dslist[i]);
6015                 }
6016
6017                 free(dslist);
6018         } else if (argc == 0) {
6019                 struct mnttab entry;
6020
6021                 if ((op == OP_SHARE) || (options != NULL)) {
6022                         (void) fprintf(stderr, gettext("missing filesystem "
6023                             "argument (specify -a for all)\n"));
6024                         usage(B_FALSE);
6025                 }
6026
6027                 /*
6028                  * When mount is given no arguments, go through /etc/mtab and
6029                  * display any active ZFS mounts.  We hide any snapshots, since
6030                  * they are controlled automatically.
6031                  */
6032
6033                 /* Reopen MNTTAB to prevent reading stale data from open file */
6034                 if (freopen(MNTTAB, "r", mnttab_file) == NULL)
6035                         return (ENOENT);
6036
6037                 while (getmntent(mnttab_file, &entry) == 0) {
6038                         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0 ||
6039                             strchr(entry.mnt_special, '@') != NULL)
6040                                 continue;
6041
6042                         (void) printf("%-30s  %s\n", entry.mnt_special,
6043                             entry.mnt_mountp);
6044                 }
6045
6046         } else {
6047                 zfs_handle_t *zhp;
6048
6049                 if (argc > 1) {
6050                         (void) fprintf(stderr,
6051                             gettext("too many arguments\n"));
6052                         usage(B_FALSE);
6053                 }
6054
6055                 if ((zhp = zfs_open(g_zfs, argv[0],
6056                     ZFS_TYPE_FILESYSTEM)) == NULL) {
6057                         ret = 1;
6058                 } else {
6059                         ret = share_mount_one(zhp, op, flags, NULL, B_TRUE,
6060                             options);
6061                         zfs_close(zhp);
6062                 }
6063         }
6064
6065         return (ret);
6066 }
6067
6068 /*
6069  * zfs mount -a [nfs]
6070  * zfs mount filesystem
6071  *
6072  * Mount all filesystems, or mount the given filesystem.
6073  */
6074 static int
6075 zfs_do_mount(int argc, char **argv)
6076 {
6077         return (share_mount(OP_MOUNT, argc, argv));
6078 }
6079
6080 /*
6081  * zfs share -a [nfs | smb]
6082  * zfs share filesystem
6083  *
6084  * Share all filesystems, or share the given filesystem.
6085  */
6086 static int
6087 zfs_do_share(int argc, char **argv)
6088 {
6089         return (share_mount(OP_SHARE, argc, argv));
6090 }
6091
6092 typedef struct unshare_unmount_node {
6093         zfs_handle_t    *un_zhp;
6094         char            *un_mountp;
6095         uu_avl_node_t   un_avlnode;
6096 } unshare_unmount_node_t;
6097
6098 /* ARGSUSED */
6099 static int
6100 unshare_unmount_compare(const void *larg, const void *rarg, void *unused)
6101 {
6102         const unshare_unmount_node_t *l = larg;
6103         const unshare_unmount_node_t *r = rarg;
6104
6105         return (strcmp(l->un_mountp, r->un_mountp));
6106 }
6107
6108 /*
6109  * Convenience routine used by zfs_do_umount() and manual_unmount().  Given an
6110  * absolute path, find the entry /etc/mtab, verify that its a ZFS filesystem,
6111  * and unmount it appropriately.
6112  */
6113 static int
6114 unshare_unmount_path(int op, char *path, int flags, boolean_t is_manual)
6115 {
6116         zfs_handle_t *zhp;
6117         int ret = 0;
6118         struct stat64 statbuf;
6119         struct extmnttab entry;
6120         const char *cmdname = (op == OP_SHARE) ? "unshare" : "unmount";
6121         ino_t path_inode;
6122
6123         /*
6124          * Search for the path in /etc/mtab.  Rather than looking for the
6125          * specific path, which can be fooled by non-standard paths (i.e. ".."
6126          * or "//"), we stat() the path and search for the corresponding
6127          * (major,minor) device pair.
6128          */
6129         if (stat64(path, &statbuf) != 0) {
6130                 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
6131                     cmdname, path, strerror(errno));
6132                 return (1);
6133         }
6134         path_inode = statbuf.st_ino;
6135
6136         /*
6137          * Search for the given (major,minor) pair in the mount table.
6138          */
6139
6140         /* Reopen MNTTAB to prevent reading stale data from open file */
6141         if (freopen(MNTTAB, "r", mnttab_file) == NULL)
6142                 return (ENOENT);
6143
6144         while ((ret = getextmntent(mnttab_file, &entry, 0)) == 0) {
6145                 if (entry.mnt_major == major(statbuf.st_dev) &&
6146                     entry.mnt_minor == minor(statbuf.st_dev))
6147                         break;
6148         }
6149         if (ret != 0) {
6150                 if (op == OP_SHARE) {
6151                         (void) fprintf(stderr, gettext("cannot %s '%s': not "
6152                             "currently mounted\n"), cmdname, path);
6153                         return (1);
6154                 }
6155                 (void) fprintf(stderr, gettext("warning: %s not in mtab\n"),
6156                     path);
6157                 if ((ret = umount2(path, flags)) != 0)
6158                         (void) fprintf(stderr, gettext("%s: %s\n"), path,
6159                             strerror(errno));
6160                 return (ret != 0);
6161         }
6162
6163         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) {
6164                 (void) fprintf(stderr, gettext("cannot %s '%s': not a ZFS "
6165                     "filesystem\n"), cmdname, path);
6166                 return (1);
6167         }
6168
6169         if ((zhp = zfs_open(g_zfs, entry.mnt_special,
6170             ZFS_TYPE_FILESYSTEM)) == NULL)
6171                 return (1);
6172
6173         ret = 1;
6174         if (stat64(entry.mnt_mountp, &statbuf) != 0) {
6175                 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
6176                     cmdname, path, strerror(errno));
6177                 goto out;
6178         } else if (statbuf.st_ino != path_inode) {
6179                 (void) fprintf(stderr, gettext("cannot "
6180                     "%s '%s': not a mountpoint\n"), cmdname, path);
6181                 goto out;
6182         }
6183
6184         if (op == OP_SHARE) {
6185                 char nfs_mnt_prop[ZFS_MAXPROPLEN];
6186                 char smbshare_prop[ZFS_MAXPROPLEN];
6187
6188                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, nfs_mnt_prop,
6189                     sizeof (nfs_mnt_prop), NULL, NULL, 0, B_FALSE) == 0);
6190                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshare_prop,
6191                     sizeof (smbshare_prop), NULL, NULL, 0, B_FALSE) == 0);
6192
6193                 if (strcmp(nfs_mnt_prop, "off") == 0 &&
6194                     strcmp(smbshare_prop, "off") == 0) {
6195                         (void) fprintf(stderr, gettext("cannot unshare "
6196                             "'%s': legacy share\n"), path);
6197                         (void) fprintf(stderr, gettext("use exportfs(8) "
6198                             "or smbcontrol(1) to unshare this filesystem\n"));
6199                 } else if (!zfs_is_shared(zhp)) {
6200                         (void) fprintf(stderr, gettext("cannot unshare '%s': "
6201                             "not currently shared\n"), path);
6202                 } else {
6203                         ret = zfs_unshareall_bypath(zhp, path);
6204                 }
6205         } else {
6206                 char mtpt_prop[ZFS_MAXPROPLEN];
6207
6208                 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mtpt_prop,
6209                     sizeof (mtpt_prop), NULL, NULL, 0, B_FALSE) == 0);
6210
6211                 if (is_manual) {
6212                         ret = zfs_unmount(zhp, NULL, flags);
6213                 } else if (strcmp(mtpt_prop, "legacy") == 0) {
6214                         (void) fprintf(stderr, gettext("cannot unmount "
6215                             "'%s': legacy mountpoint\n"),
6216                             zfs_get_name(zhp));
6217                         (void) fprintf(stderr, gettext("use umount(8) "
6218                             "to unmount this filesystem\n"));
6219                 } else {
6220                         ret = zfs_unmountall(zhp, flags);
6221                 }
6222         }
6223
6224 out:
6225         zfs_close(zhp);
6226
6227         return (ret != 0);
6228 }
6229
6230 /*
6231  * Generic callback for unsharing or unmounting a filesystem.
6232  */
6233 static int
6234 unshare_unmount(int op, int argc, char **argv)
6235 {
6236         int do_all = 0;
6237         int flags = 0;
6238         int ret = 0;
6239         int c;
6240         zfs_handle_t *zhp;
6241         char nfs_mnt_prop[ZFS_MAXPROPLEN];
6242         char sharesmb[ZFS_MAXPROPLEN];
6243
6244         /* check options */
6245         while ((c = getopt(argc, argv, op == OP_SHARE ? "a" : "af")) != -1) {
6246                 switch (c) {
6247                 case 'a':
6248                         do_all = 1;
6249                         break;
6250                 case 'f':
6251                         flags = MS_FORCE;
6252                         break;
6253                 case '?':
6254                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6255                             optopt);
6256                         usage(B_FALSE);
6257                 }
6258         }
6259
6260         argc -= optind;
6261         argv += optind;
6262
6263         if (do_all) {
6264                 /*
6265                  * We could make use of zfs_for_each() to walk all datasets in
6266                  * the system, but this would be very inefficient, especially
6267                  * since we would have to linearly search /etc/mtab for each
6268                  * one.  Instead, do one pass through /etc/mtab looking for
6269                  * zfs entries and call zfs_unmount() for each one.
6270                  *
6271                  * Things get a little tricky if the administrator has created
6272                  * mountpoints beneath other ZFS filesystems.  In this case, we
6273                  * have to unmount the deepest filesystems first.  To accomplish
6274                  * this, we place all the mountpoints in an AVL tree sorted by
6275                  * the special type (dataset name), and walk the result in
6276                  * reverse to make sure to get any snapshots first.
6277                  */
6278                 struct mnttab entry;
6279                 uu_avl_pool_t *pool;
6280                 uu_avl_t *tree = NULL;
6281                 unshare_unmount_node_t *node;
6282                 uu_avl_index_t idx;
6283                 uu_avl_walk_t *walk;
6284
6285                 if (argc != 0) {
6286                         (void) fprintf(stderr, gettext("too many arguments\n"));
6287                         usage(B_FALSE);
6288                 }
6289
6290                 if (((pool = uu_avl_pool_create("unmount_pool",
6291                     sizeof (unshare_unmount_node_t),
6292                     offsetof(unshare_unmount_node_t, un_avlnode),
6293                     unshare_unmount_compare, UU_DEFAULT)) == NULL) ||
6294                     ((tree = uu_avl_create(pool, NULL, UU_DEFAULT)) == NULL))
6295                         nomem();
6296
6297                 /* Reopen MNTTAB to prevent reading stale data from open file */
6298                 if (freopen(MNTTAB, "r", mnttab_file) == NULL)
6299                         return (ENOENT);
6300
6301                 while (getmntent(mnttab_file, &entry) == 0) {
6302
6303                         /* ignore non-ZFS entries */
6304                         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0)
6305                                 continue;
6306
6307                         /* ignore snapshots */
6308                         if (strchr(entry.mnt_special, '@') != NULL)
6309                                 continue;
6310
6311                         if ((zhp = zfs_open(g_zfs, entry.mnt_special,
6312                             ZFS_TYPE_FILESYSTEM)) == NULL) {
6313                                 ret = 1;
6314                                 continue;
6315                         }
6316
6317                         switch (op) {
6318                         case OP_SHARE:
6319                                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
6320                                     nfs_mnt_prop,
6321                                     sizeof (nfs_mnt_prop),
6322                                     NULL, NULL, 0, B_FALSE) == 0);
6323                                 if (strcmp(nfs_mnt_prop, "off") != 0)
6324                                         break;
6325                                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
6326                                     nfs_mnt_prop,
6327                                     sizeof (nfs_mnt_prop),
6328                                     NULL, NULL, 0, B_FALSE) == 0);
6329                                 if (strcmp(nfs_mnt_prop, "off") == 0)
6330                                         continue;
6331                                 break;
6332                         case OP_MOUNT:
6333                                 /* Ignore legacy mounts */
6334                                 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT,
6335                                     nfs_mnt_prop,
6336                                     sizeof (nfs_mnt_prop),
6337                                     NULL, NULL, 0, B_FALSE) == 0);
6338                                 if (strcmp(nfs_mnt_prop, "legacy") == 0)
6339                                         continue;
6340                                 /* Ignore canmount=noauto mounts */
6341                                 if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) ==
6342                                     ZFS_CANMOUNT_NOAUTO)
6343                                         continue;
6344                         default:
6345                                 break;
6346                         }
6347
6348                         node = safe_malloc(sizeof (unshare_unmount_node_t));
6349                         node->un_zhp = zhp;
6350                         node->un_mountp = safe_strdup(entry.mnt_mountp);
6351
6352                         uu_avl_node_init(node, &node->un_avlnode, pool);
6353
6354                         if (uu_avl_find(tree, node, NULL, &idx) == NULL) {
6355                                 uu_avl_insert(tree, node, idx);
6356                         } else {
6357                                 zfs_close(node->un_zhp);
6358                                 free(node->un_mountp);
6359                                 free(node);
6360                         }
6361                 }
6362
6363                 /*
6364                  * Walk the AVL tree in reverse, unmounting each filesystem and
6365                  * removing it from the AVL tree in the process.
6366                  */
6367                 if ((walk = uu_avl_walk_start(tree,
6368                     UU_WALK_REVERSE | UU_WALK_ROBUST)) == NULL)
6369                         nomem();
6370
6371                 while ((node = uu_avl_walk_next(walk)) != NULL) {
6372                         uu_avl_remove(tree, node);
6373
6374                         switch (op) {
6375                         case OP_SHARE:
6376                                 if (zfs_unshareall_bypath(node->un_zhp,
6377                                     node->un_mountp) != 0)
6378                                         ret = 1;
6379                                 break;
6380
6381                         case OP_MOUNT:
6382                                 if (zfs_unmount(node->un_zhp,
6383                                     node->un_mountp, flags) != 0)
6384                                         ret = 1;
6385                                 break;
6386                         }
6387
6388                         zfs_close(node->un_zhp);
6389                         free(node->un_mountp);
6390                         free(node);
6391                 }
6392
6393                 uu_avl_walk_end(walk);
6394                 uu_avl_destroy(tree);
6395                 uu_avl_pool_destroy(pool);
6396
6397         } else {
6398                 if (argc != 1) {
6399                         if (argc == 0)
6400                                 (void) fprintf(stderr,
6401                                     gettext("missing filesystem argument\n"));
6402                         else
6403                                 (void) fprintf(stderr,
6404                                     gettext("too many arguments\n"));
6405                         usage(B_FALSE);
6406                 }
6407
6408                 /*
6409                  * We have an argument, but it may be a full path or a ZFS
6410                  * filesystem.  Pass full paths off to unmount_path() (shared by
6411                  * manual_unmount), otherwise open the filesystem and pass to
6412                  * zfs_unmount().
6413                  */
6414                 if (argv[0][0] == '/')
6415                         return (unshare_unmount_path(op, argv[0],
6416                             flags, B_FALSE));
6417
6418                 if ((zhp = zfs_open(g_zfs, argv[0],
6419                     ZFS_TYPE_FILESYSTEM)) == NULL)
6420                         return (1);
6421
6422                 verify(zfs_prop_get(zhp, op == OP_SHARE ?
6423                     ZFS_PROP_SHARENFS : ZFS_PROP_MOUNTPOINT,
6424                     nfs_mnt_prop, sizeof (nfs_mnt_prop), NULL,
6425                     NULL, 0, B_FALSE) == 0);
6426
6427                 switch (op) {
6428                 case OP_SHARE:
6429                         verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
6430                             nfs_mnt_prop,
6431                             sizeof (nfs_mnt_prop),
6432                             NULL, NULL, 0, B_FALSE) == 0);
6433                         verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
6434                             sharesmb, sizeof (sharesmb), NULL, NULL,
6435                             0, B_FALSE) == 0);
6436
6437                         if (strcmp(nfs_mnt_prop, "off") == 0 &&
6438                             strcmp(sharesmb, "off") == 0) {
6439                                 (void) fprintf(stderr, gettext("cannot "
6440                                     "unshare '%s': legacy share\n"),
6441                                     zfs_get_name(zhp));
6442                                 (void) fprintf(stderr, gettext("use "
6443                                     "unshare(1M) to unshare this "
6444                                     "filesystem\n"));
6445                                 ret = 1;
6446                         } else if (!zfs_is_shared(zhp)) {
6447                                 (void) fprintf(stderr, gettext("cannot "
6448                                     "unshare '%s': not currently "
6449                                     "shared\n"), zfs_get_name(zhp));
6450                                 ret = 1;
6451                         } else if (zfs_unshareall(zhp) != 0) {
6452                                 ret = 1;
6453                         }
6454                         break;
6455
6456                 case OP_MOUNT:
6457                         if (strcmp(nfs_mnt_prop, "legacy") == 0) {
6458                                 (void) fprintf(stderr, gettext("cannot "
6459                                     "unmount '%s': legacy "
6460                                     "mountpoint\n"), zfs_get_name(zhp));
6461                                 (void) fprintf(stderr, gettext("use "
6462                                     "umount(1M) to unmount this "
6463                                     "filesystem\n"));
6464                                 ret = 1;
6465                         } else if (!zfs_is_mounted(zhp, NULL)) {
6466                                 (void) fprintf(stderr, gettext("cannot "
6467                                     "unmount '%s': not currently "
6468                                     "mounted\n"),
6469                                     zfs_get_name(zhp));
6470                                 ret = 1;
6471                         } else if (zfs_unmountall(zhp, flags) != 0) {
6472                                 ret = 1;
6473                         }
6474                         break;
6475                 }
6476
6477                 zfs_close(zhp);
6478         }
6479
6480         return (ret);
6481 }
6482
6483 /*
6484  * zfs unmount -a
6485  * zfs unmount filesystem
6486  *
6487  * Unmount all filesystems, or a specific ZFS filesystem.
6488  */
6489 static int
6490 zfs_do_unmount(int argc, char **argv)
6491 {
6492         return (unshare_unmount(OP_MOUNT, argc, argv));
6493 }
6494
6495 /*
6496  * zfs unshare -a
6497  * zfs unshare filesystem
6498  *
6499  * Unshare all filesystems, or a specific ZFS filesystem.
6500  */
6501 static int
6502 zfs_do_unshare(int argc, char **argv)
6503 {
6504         return (unshare_unmount(OP_SHARE, argc, argv));
6505 }
6506
6507 static int
6508 find_command_idx(char *command, int *idx)
6509 {
6510         int i;
6511
6512         for (i = 0; i < NCOMMAND; i++) {
6513                 if (command_table[i].name == NULL)
6514                         continue;
6515
6516                 if (strcmp(command, command_table[i].name) == 0) {
6517                         *idx = i;
6518                         return (0);
6519                 }
6520         }
6521         return (1);
6522 }
6523
6524 static int
6525 zfs_do_diff(int argc, char **argv)
6526 {
6527         zfs_handle_t *zhp;
6528         int flags = 0;
6529         char *tosnap = NULL;
6530         char *fromsnap = NULL;
6531         char *atp, *copy;
6532         int err = 0;
6533         int c;
6534
6535         while ((c = getopt(argc, argv, "FHt")) != -1) {
6536                 switch (c) {
6537                 case 'F':
6538                         flags |= ZFS_DIFF_CLASSIFY;
6539                         break;
6540                 case 'H':
6541                         flags |= ZFS_DIFF_PARSEABLE;
6542                         break;
6543                 case 't':
6544                         flags |= ZFS_DIFF_TIMESTAMP;
6545                         break;
6546                 default:
6547                         (void) fprintf(stderr,
6548                             gettext("invalid option '%c'\n"), optopt);
6549                         usage(B_FALSE);
6550                 }
6551         }
6552
6553         argc -= optind;
6554         argv += optind;
6555
6556         if (argc < 1) {
6557                 (void) fprintf(stderr,
6558                 gettext("must provide at least one snapshot name\n"));
6559                 usage(B_FALSE);
6560         }
6561
6562         if (argc > 2) {
6563                 (void) fprintf(stderr, gettext("too many arguments\n"));
6564                 usage(B_FALSE);
6565         }
6566
6567         fromsnap = argv[0];
6568         tosnap = (argc == 2) ? argv[1] : NULL;
6569
6570         copy = NULL;
6571         if (*fromsnap != '@')
6572                 copy = strdup(fromsnap);
6573         else if (tosnap)
6574                 copy = strdup(tosnap);
6575         if (copy == NULL)
6576                 usage(B_FALSE);
6577
6578         if ((atp = strchr(copy, '@')))
6579                 *atp = '\0';
6580
6581         if ((zhp = zfs_open(g_zfs, copy, ZFS_TYPE_FILESYSTEM)) == NULL)
6582                 return (1);
6583
6584         free(copy);
6585
6586         /*
6587          * Ignore SIGPIPE so that the library can give us
6588          * information on any failure
6589          */
6590         (void) sigignore(SIGPIPE);
6591
6592         err = zfs_show_diffs(zhp, STDOUT_FILENO, fromsnap, tosnap, flags);
6593
6594         zfs_close(zhp);
6595
6596         return (err != 0);
6597 }
6598
6599 /*
6600  * zfs bookmark <fs@snap> <fs#bmark>
6601  *
6602  * Creates a bookmark with the given name from the given snapshot.
6603  */
6604 static int
6605 zfs_do_bookmark(int argc, char **argv)
6606 {
6607         char snapname[ZFS_MAXNAMELEN];
6608         zfs_handle_t *zhp;
6609         nvlist_t *nvl;
6610         int ret = 0;
6611         int c;
6612
6613         /* check options */
6614         while ((c = getopt(argc, argv, "")) != -1) {
6615                 switch (c) {
6616                 case '?':
6617                         (void) fprintf(stderr,
6618                             gettext("invalid option '%c'\n"), optopt);
6619                         goto usage;
6620                 }
6621         }
6622
6623         argc -= optind;
6624         argv += optind;
6625
6626         /* check number of arguments */
6627         if (argc < 1) {
6628                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
6629                 goto usage;
6630         }
6631         if (argc < 2) {
6632                 (void) fprintf(stderr, gettext("missing bookmark argument\n"));
6633                 goto usage;
6634         }
6635
6636         if (strchr(argv[1], '#') == NULL) {
6637                 (void) fprintf(stderr,
6638                     gettext("invalid bookmark name '%s' -- "
6639                     "must contain a '#'\n"), argv[1]);
6640                 goto usage;
6641         }
6642
6643         if (argv[0][0] == '@') {
6644                 /*
6645                  * Snapshot name begins with @.
6646                  * Default to same fs as bookmark.
6647                  */
6648                 (void) strncpy(snapname, argv[1], sizeof (snapname));
6649                 *strchr(snapname, '#') = '\0';
6650                 (void) strlcat(snapname, argv[0], sizeof (snapname));
6651         } else {
6652                 (void) strncpy(snapname, argv[0], sizeof (snapname));
6653         }
6654         zhp = zfs_open(g_zfs, snapname, ZFS_TYPE_SNAPSHOT);
6655         if (zhp == NULL)
6656                 goto usage;
6657         zfs_close(zhp);
6658
6659
6660         nvl = fnvlist_alloc();
6661         fnvlist_add_string(nvl, argv[1], snapname);
6662         ret = lzc_bookmark(nvl, NULL);
6663         fnvlist_free(nvl);
6664
6665         if (ret != 0) {
6666                 const char *err_msg;
6667                 char errbuf[1024];
6668
6669                 (void) snprintf(errbuf, sizeof (errbuf),
6670                     dgettext(TEXT_DOMAIN,
6671                     "cannot create bookmark '%s'"), argv[1]);
6672
6673                 switch (ret) {
6674                 case EXDEV:
6675                         err_msg = "bookmark is in a different pool";
6676                         break;
6677                 case EEXIST:
6678                         err_msg = "bookmark exists";
6679                         break;
6680                 case EINVAL:
6681                         err_msg = "invalid argument";
6682                         break;
6683                 case ENOTSUP:
6684                         err_msg = "bookmark feature not enabled";
6685                         break;
6686                 case ENOSPC:
6687                         err_msg = "out of space";
6688                         break;
6689                 default:
6690                         err_msg = "unknown error";
6691                         break;
6692                 }
6693                 (void) fprintf(stderr, "%s: %s\n", errbuf,
6694                     dgettext(TEXT_DOMAIN, err_msg));
6695         }
6696
6697         return (ret != 0);
6698
6699 usage:
6700         usage(B_FALSE);
6701         return (-1);
6702 }
6703
6704 int
6705 main(int argc, char **argv)
6706 {
6707         int ret = 0;
6708         int i = 0;
6709         char *cmdname;
6710
6711         (void) setlocale(LC_ALL, "");
6712         (void) textdomain(TEXT_DOMAIN);
6713
6714         dprintf_setup(&argc, argv);
6715
6716         opterr = 0;
6717
6718         /*
6719          * Make sure the user has specified some command.
6720          */
6721         if (argc < 2) {
6722                 (void) fprintf(stderr, gettext("missing command\n"));
6723                 usage(B_FALSE);
6724         }
6725
6726         cmdname = argv[1];
6727
6728         /*
6729          * The 'umount' command is an alias for 'unmount'
6730          */
6731         if (strcmp(cmdname, "umount") == 0)
6732                 cmdname = "unmount";
6733
6734         /*
6735          * The 'recv' command is an alias for 'receive'
6736          */
6737         if (strcmp(cmdname, "recv") == 0)
6738                 cmdname = "receive";
6739
6740         /*
6741          * The 'snap' command is an alias for 'snapshot'
6742          */
6743         if (strcmp(cmdname, "snap") == 0)
6744                 cmdname = "snapshot";
6745
6746         /*
6747          * Special case '-?'
6748          */
6749         if ((strcmp(cmdname, "-?") == 0) ||
6750             (strcmp(cmdname, "--help") == 0))
6751                 usage(B_TRUE);
6752
6753         if ((g_zfs = libzfs_init()) == NULL) {
6754                 (void) fprintf(stderr, "%s", libzfs_error_init(errno));
6755                 return (1);
6756         }
6757
6758         mnttab_file = g_zfs->libzfs_mnttab;
6759
6760         zfs_save_arguments(argc, argv, history_str, sizeof (history_str));
6761
6762         libzfs_print_on_error(g_zfs, B_TRUE);
6763
6764         /*
6765          * Run the appropriate command.
6766          */
6767         libzfs_mnttab_cache(g_zfs, B_TRUE);
6768         if (find_command_idx(cmdname, &i) == 0) {
6769                 current_command = &command_table[i];
6770                 ret = command_table[i].func(argc - 1, argv + 1);
6771         } else if (strchr(cmdname, '=') != NULL) {
6772                 verify(find_command_idx("set", &i) == 0);
6773                 current_command = &command_table[i];
6774                 ret = command_table[i].func(argc, argv);
6775         } else {
6776                 (void) fprintf(stderr, gettext("unrecognized "
6777                     "command '%s'\n"), cmdname);
6778                 usage(B_FALSE);
6779                 ret = 1;
6780         }
6781
6782         if (ret == 0 && log_history)
6783                 (void) zpool_log_history(g_zfs, history_str);
6784
6785         libzfs_fini(g_zfs);
6786
6787         /*
6788          * The 'ZFS_ABORT' environment variable causes us to dump core on exit
6789          * for the purposes of running ::findleaks.
6790          */
6791         if (getenv("ZFS_ABORT") != NULL) {
6792                 (void) printf("dumping core by request\n");
6793                 abort();
6794         }
6795
6796         return (ret);
6797 }