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                                 (void) nvlist_lookup_uint64(lnvl, propname,
2304                                     &lv64);
2305                                 (void) nvlist_lookup_uint64(rnvl, propname,
2306                                     &rv64);
2307                                 if (rv64 != lv64)
2308                                         rc = (rv64 < lv64) ? 1 : -1;
2309                         } else {
2310                                 (void) nvlist_lookup_string(lnvl, propname,
2311                                     &lvstr);
2312                                 (void) nvlist_lookup_string(rnvl, propname,
2313                                     &rvstr);
2314                                 rc = strcmp(lvstr, rvstr);
2315                         }
2316                         break;
2317                 case ZFS_PROP_USED:
2318                 case ZFS_PROP_QUOTA:
2319                         if (!us_populated)
2320                                 break;
2321                         if (prop == ZFS_PROP_USED)
2322                                 propname = "used";
2323                         else
2324                                 propname = "quota";
2325                         (void) nvlist_lookup_uint64(lnvl, propname, &lv64);
2326                         (void) nvlist_lookup_uint64(rnvl, propname, &rv64);
2327                         if (rv64 != lv64)
2328                                 rc = (rv64 < lv64) ? 1 : -1;
2329                         break;
2330                 default:
2331                         break;
2332                 }
2333
2334                 if (rc != 0) {
2335                         if (rc < 0)
2336                                 return (reverse ? 1 : -1);
2337                         else
2338                                 return (reverse ? -1 : 1);
2339                 }
2340         }
2341
2342         /*
2343          * If entries still seem to be the same, check if they are of the same
2344          * type (smbentity is added only if we are doing SID to POSIX ID
2345          * translation where we can have duplicate type/name combinations).
2346          */
2347         if (nvlist_lookup_boolean_value(lnvl, "smbentity", &lvb) == 0 &&
2348             nvlist_lookup_boolean_value(rnvl, "smbentity", &rvb) == 0 &&
2349             lvb != rvb)
2350                 return (lvb < rvb ? -1 : 1);
2351
2352         return (0);
2353 }
2354
2355 static inline const char *
2356 us_type2str(unsigned field_type)
2357 {
2358         switch (field_type) {
2359         case USTYPE_PSX_USR:
2360                 return ("POSIX User");
2361         case USTYPE_PSX_GRP:
2362                 return ("POSIX Group");
2363         case USTYPE_SMB_USR:
2364                 return ("SMB User");
2365         case USTYPE_SMB_GRP:
2366                 return ("SMB Group");
2367         default:
2368                 return ("Undefined");
2369         }
2370 }
2371
2372 static int
2373 userspace_cb(void *arg, const char *domain, uid_t rid, uint64_t space)
2374 {
2375         us_cbdata_t *cb = (us_cbdata_t *)arg;
2376         zfs_userquota_prop_t prop = cb->cb_prop;
2377         char *name = NULL;
2378         char *propname;
2379         char sizebuf[32];
2380         us_node_t *node;
2381         uu_avl_pool_t *avl_pool = cb->cb_avl_pool;
2382         uu_avl_t *avl = cb->cb_avl;
2383         uu_avl_index_t idx;
2384         nvlist_t *props;
2385         us_node_t *n;
2386         zfs_sort_column_t *sortcol = cb->cb_sortcol;
2387         unsigned type = 0;
2388         const char *typestr;
2389         size_t namelen;
2390         size_t typelen;
2391         size_t sizelen;
2392         int typeidx, nameidx, sizeidx;
2393         us_sort_info_t sortinfo = { sortcol, cb->cb_numname };
2394         boolean_t smbentity = B_FALSE;
2395
2396         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
2397                 nomem();
2398         node = safe_malloc(sizeof (us_node_t));
2399         uu_avl_node_init(node, &node->usn_avlnode, avl_pool);
2400         node->usn_nvl = props;
2401
2402         if (domain != NULL && domain[0] != '\0') {
2403 #ifdef HAVE_IDMAP
2404                 /* SMB */
2405                 char sid[ZFS_MAXNAMELEN + 32];
2406                 uid_t id;
2407                 uint64_t classes;
2408                 int err;
2409                 directory_error_t e;
2410
2411                 smbentity = B_TRUE;
2412
2413                 (void) snprintf(sid, sizeof (sid), "%s-%u", domain, rid);
2414
2415                 if (prop == ZFS_PROP_GROUPUSED || prop == ZFS_PROP_GROUPQUOTA) {
2416                         type = USTYPE_SMB_GRP;
2417                         err = sid_to_id(sid, B_FALSE, &id);
2418                 } else {
2419                         type = USTYPE_SMB_USR;
2420                         err = sid_to_id(sid, B_TRUE, &id);
2421                 }
2422
2423                 if (err == 0) {
2424                         rid = id;
2425                         if (!cb->cb_sid2posix) {
2426                                 e = directory_name_from_sid(NULL, sid, &name,
2427                                     &classes);
2428                                 if (e != NULL)
2429                                         directory_error_free(e);
2430                                 if (name == NULL)
2431                                         name = sid;
2432                         }
2433                 }
2434 #else
2435                 nvlist_free(props);
2436                 free(node);
2437
2438                 return (-1);
2439 #endif /* HAVE_IDMAP */
2440         }
2441
2442         if (cb->cb_sid2posix || domain == NULL || domain[0] == '\0') {
2443                 /* POSIX or -i */
2444                 if (prop == ZFS_PROP_GROUPUSED || prop == ZFS_PROP_GROUPQUOTA) {
2445                         type = USTYPE_PSX_GRP;
2446                         if (!cb->cb_numname) {
2447                                 struct group *g;
2448
2449                                 if ((g = getgrgid(rid)) != NULL)
2450                                         name = g->gr_name;
2451                         }
2452                 } else {
2453                         type = USTYPE_PSX_USR;
2454                         if (!cb->cb_numname) {
2455                                 struct passwd *p;
2456
2457                                 if ((p = getpwuid(rid)) != NULL)
2458                                         name = p->pw_name;
2459                         }
2460                 }
2461         }
2462
2463         /*
2464          * Make sure that the type/name combination is unique when doing
2465          * SID to POSIX ID translation (hence changing the type from SMB to
2466          * POSIX).
2467          */
2468         if (cb->cb_sid2posix &&
2469             nvlist_add_boolean_value(props, "smbentity", smbentity) != 0)
2470                 nomem();
2471
2472         /* Calculate/update width of TYPE field */
2473         typestr = us_type2str(type);
2474         typelen = strlen(gettext(typestr));
2475         typeidx = us_field_index("type");
2476         if (typelen > cb->cb_width[typeidx])
2477                 cb->cb_width[typeidx] = typelen;
2478         if (nvlist_add_uint32(props, "type", type) != 0)
2479                 nomem();
2480
2481         /* Calculate/update width of NAME field */
2482         if ((cb->cb_numname && cb->cb_sid2posix) || name == NULL) {
2483                 if (nvlist_add_uint64(props, "name", rid) != 0)
2484                         nomem();
2485                 namelen = snprintf(NULL, 0, "%u", rid);
2486         } else {
2487                 if (nvlist_add_string(props, "name", name) != 0)
2488                         nomem();
2489                 namelen = strlen(name);
2490         }
2491         nameidx = us_field_index("name");
2492         if (namelen > cb->cb_width[nameidx])
2493                 cb->cb_width[nameidx] = namelen;
2494
2495         /*
2496          * Check if this type/name combination is in the list and update it;
2497          * otherwise add new node to the list.
2498          */
2499         if ((n = uu_avl_find(avl, node, &sortinfo, &idx)) == NULL) {
2500                 uu_avl_insert(avl, node, idx);
2501         } else {
2502                 nvlist_free(props);
2503                 free(node);
2504                 node = n;
2505                 props = node->usn_nvl;
2506         }
2507
2508         /* Calculate/update width of USED/QUOTA fields */
2509         if (cb->cb_nicenum)
2510                 zfs_nicenum(space, sizebuf, sizeof (sizebuf));
2511         else
2512                 (void) snprintf(sizebuf, sizeof (sizebuf), "%llu",
2513                     (u_longlong_t)space);
2514         sizelen = strlen(sizebuf);
2515         if (prop == ZFS_PROP_USERUSED || prop == ZFS_PROP_GROUPUSED) {
2516                 propname = "used";
2517                 if (!nvlist_exists(props, "quota"))
2518                         (void) nvlist_add_uint64(props, "quota", 0);
2519         } else {
2520                 propname = "quota";
2521                 if (!nvlist_exists(props, "used"))
2522                         (void) nvlist_add_uint64(props, "used", 0);
2523         }
2524         sizeidx = us_field_index(propname);
2525         if (sizelen > cb->cb_width[sizeidx])
2526                 cb->cb_width[sizeidx] = sizelen;
2527
2528         if (nvlist_add_uint64(props, propname, space) != 0)
2529                 nomem();
2530
2531         return (0);
2532 }
2533
2534 static void
2535 print_us_node(boolean_t scripted, boolean_t parsable, int *fields, int types,
2536     size_t *width, us_node_t *node)
2537 {
2538         nvlist_t *nvl = node->usn_nvl;
2539         char valstr[ZFS_MAXNAMELEN];
2540         boolean_t first = B_TRUE;
2541         int cfield = 0;
2542         int field;
2543         uint32_t ustype;
2544
2545         /* Check type */
2546         (void) nvlist_lookup_uint32(nvl, "type", &ustype);
2547         if (!(ustype & types))
2548                 return;
2549
2550         while ((field = fields[cfield]) != USFIELD_LAST) {
2551                 nvpair_t *nvp = NULL;
2552                 data_type_t type;
2553                 uint32_t val32;
2554                 uint64_t val64;
2555                 char *strval = NULL;
2556
2557                 while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
2558                         if (strcmp(nvpair_name(nvp),
2559                             us_field_names[field]) == 0)
2560                                 break;
2561                 }
2562
2563                 type = nvpair_type(nvp);
2564                 switch (type) {
2565                 case DATA_TYPE_UINT32:
2566                         (void) nvpair_value_uint32(nvp, &val32);
2567                         break;
2568                 case DATA_TYPE_UINT64:
2569                         (void) nvpair_value_uint64(nvp, &val64);
2570                         break;
2571                 case DATA_TYPE_STRING:
2572                         (void) nvpair_value_string(nvp, &strval);
2573                         break;
2574                 default:
2575                         (void) fprintf(stderr, "invalid data type\n");
2576                 }
2577
2578                 switch (field) {
2579                 case USFIELD_TYPE:
2580                         strval = (char *)us_type2str(val32);
2581                         break;
2582                 case USFIELD_NAME:
2583                         if (type == DATA_TYPE_UINT64) {
2584                                 (void) sprintf(valstr, "%llu",
2585                                     (u_longlong_t) val64);
2586                                 strval = valstr;
2587                         }
2588                         break;
2589                 case USFIELD_USED:
2590                 case USFIELD_QUOTA:
2591                         if (type == DATA_TYPE_UINT64) {
2592                                 if (parsable) {
2593                                         (void) sprintf(valstr, "%llu",
2594                                             (u_longlong_t) val64);
2595                                 } else {
2596                                         zfs_nicenum(val64, valstr,
2597                                             sizeof (valstr));
2598                                 }
2599                                 if (field == USFIELD_QUOTA &&
2600                                     strcmp(valstr, "0") == 0)
2601                                         strval = "none";
2602                                 else
2603                                         strval = valstr;
2604                         }
2605                         break;
2606                 }
2607
2608                 if (!first) {
2609                         if (scripted)
2610                                 (void) printf("\t");
2611                         else
2612                                 (void) printf("  ");
2613                 }
2614                 if (scripted)
2615                         (void) printf("%s", strval);
2616                 else if (field == USFIELD_TYPE || field == USFIELD_NAME)
2617                         (void) printf("%-*s", (int) width[field], strval);
2618                 else
2619                         (void) printf("%*s", (int) width[field], strval);
2620
2621                 first = B_FALSE;
2622                 cfield++;
2623         }
2624
2625         (void) printf("\n");
2626 }
2627
2628 static void
2629 print_us(boolean_t scripted, boolean_t parsable, int *fields, int types,
2630     size_t *width, boolean_t rmnode, uu_avl_t *avl)
2631 {
2632         us_node_t *node;
2633         const char *col;
2634         int cfield = 0;
2635         int field;
2636
2637         if (!scripted) {
2638                 boolean_t first = B_TRUE;
2639
2640                 while ((field = fields[cfield]) != USFIELD_LAST) {
2641                         col = gettext(us_field_hdr[field]);
2642                         if (field == USFIELD_TYPE || field == USFIELD_NAME) {
2643                                 (void) printf(first ? "%-*s" : "  %-*s",
2644                                     (int) width[field], col);
2645                         } else {
2646                                 (void) printf(first ? "%*s" : "  %*s",
2647                                     (int) width[field], col);
2648                         }
2649                         first = B_FALSE;
2650                         cfield++;
2651                 }
2652                 (void) printf("\n");
2653         }
2654
2655         for (node = uu_avl_first(avl); node; node = uu_avl_next(avl, node)) {
2656                 print_us_node(scripted, parsable, fields, types, width, node);
2657                 if (rmnode)
2658                         nvlist_free(node->usn_nvl);
2659         }
2660 }
2661
2662 static int
2663 zfs_do_userspace(int argc, char **argv)
2664 {
2665         zfs_handle_t *zhp;
2666         zfs_userquota_prop_t p;
2667         uu_avl_pool_t *avl_pool;
2668         uu_avl_t *avl_tree;
2669         uu_avl_walk_t *walk;
2670         char *delim;
2671         char deffields[] = "type,name,used,quota";
2672         char *ofield = NULL;
2673         char *tfield = NULL;
2674         int cfield = 0;
2675         int fields[256];
2676         int i;
2677         boolean_t scripted = B_FALSE;
2678         boolean_t prtnum = B_FALSE;
2679         boolean_t parsable = B_FALSE;
2680         boolean_t sid2posix = B_FALSE;
2681         int ret = 0;
2682         int c;
2683         zfs_sort_column_t *sortcol = NULL;
2684         int types = USTYPE_PSX_USR | USTYPE_SMB_USR;
2685         us_cbdata_t cb;
2686         us_node_t *node;
2687         us_node_t *rmnode;
2688         uu_list_pool_t *listpool;
2689         uu_list_t *list;
2690         uu_avl_index_t idx = 0;
2691         uu_list_index_t idx2 = 0;
2692
2693         if (argc < 2)
2694                 usage(B_FALSE);
2695
2696         if (strcmp(argv[0], "groupspace") == 0)
2697                 /* Toggle default group types */
2698                 types = USTYPE_PSX_GRP | USTYPE_SMB_GRP;
2699
2700         while ((c = getopt(argc, argv, "nHpo:s:S:t:i")) != -1) {
2701                 switch (c) {
2702                 case 'n':
2703                         prtnum = B_TRUE;
2704                         break;
2705                 case 'H':
2706                         scripted = B_TRUE;
2707                         break;
2708                 case 'p':
2709                         parsable = B_TRUE;
2710                         break;
2711                 case 'o':
2712                         ofield = optarg;
2713                         break;
2714                 case 's':
2715                 case 'S':
2716                         if (zfs_add_sort_column(&sortcol, optarg,
2717                             c == 's' ? B_FALSE : B_TRUE) != 0) {
2718                                 (void) fprintf(stderr,
2719                                     gettext("invalid field '%s'\n"), optarg);
2720                                 usage(B_FALSE);
2721                         }
2722                         break;
2723                 case 't':
2724                         tfield = optarg;
2725                         break;
2726                 case 'i':
2727                         sid2posix = B_TRUE;
2728                         break;
2729                 case ':':
2730                         (void) fprintf(stderr, gettext("missing argument for "
2731                             "'%c' option\n"), optopt);
2732                         usage(B_FALSE);
2733                         break;
2734                 case '?':
2735                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2736                             optopt);
2737                         usage(B_FALSE);
2738                 }
2739         }
2740
2741         argc -= optind;
2742         argv += optind;
2743
2744         if (argc < 1) {
2745                 (void) fprintf(stderr, gettext("missing dataset name\n"));
2746                 usage(B_FALSE);
2747         }
2748         if (argc > 1) {
2749                 (void) fprintf(stderr, gettext("too many arguments\n"));
2750                 usage(B_FALSE);
2751         }
2752
2753         /* Use default output fields if not specified using -o */
2754         if (ofield == NULL)
2755                 ofield = deffields;
2756         do {
2757                 if ((delim = strchr(ofield, ',')) != NULL)
2758                         *delim = '\0';
2759                 if ((fields[cfield++] = us_field_index(ofield)) == -1) {
2760                         (void) fprintf(stderr, gettext("invalid type '%s' "
2761                             "for -o option\n"), ofield);
2762                         return (-1);
2763                 }
2764                 if (delim != NULL)
2765                         ofield = delim + 1;
2766         } while (delim != NULL);
2767         fields[cfield] = USFIELD_LAST;
2768
2769         /* Override output types (-t option) */
2770         if (tfield != NULL) {
2771                 types = 0;
2772
2773                 do {
2774                         boolean_t found = B_FALSE;
2775
2776                         if ((delim = strchr(tfield, ',')) != NULL)
2777                                 *delim = '\0';
2778                         for (i = 0; i < sizeof (us_type_bits) / sizeof (int);
2779                             i++) {
2780                                 if (strcmp(tfield, us_type_names[i]) == 0) {
2781                                         found = B_TRUE;
2782                                         types |= us_type_bits[i];
2783                                         break;
2784                                 }
2785                         }
2786                         if (!found) {
2787                                 (void) fprintf(stderr, gettext("invalid type "
2788                                     "'%s' for -t option\n"), tfield);
2789                                 return (-1);
2790                         }
2791                         if (delim != NULL)
2792                                 tfield = delim + 1;
2793                 } while (delim != NULL);
2794         }
2795
2796         if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL)
2797                 return (1);
2798
2799         if ((avl_pool = uu_avl_pool_create("us_avl_pool", sizeof (us_node_t),
2800             offsetof(us_node_t, usn_avlnode), us_compare, UU_DEFAULT)) == NULL)
2801                 nomem();
2802         if ((avl_tree = uu_avl_create(avl_pool, NULL, UU_DEFAULT)) == NULL)
2803                 nomem();
2804
2805         /* Always add default sorting columns */
2806         (void) zfs_add_sort_column(&sortcol, "type", B_FALSE);
2807         (void) zfs_add_sort_column(&sortcol, "name", B_FALSE);
2808
2809         cb.cb_sortcol = sortcol;
2810         cb.cb_numname = prtnum;
2811         cb.cb_nicenum = !parsable;
2812         cb.cb_avl_pool = avl_pool;
2813         cb.cb_avl = avl_tree;
2814         cb.cb_sid2posix = sid2posix;
2815
2816         for (i = 0; i < USFIELD_LAST; i++)
2817                 cb.cb_width[i] = strlen(gettext(us_field_hdr[i]));
2818
2819         for (p = 0; p < ZFS_NUM_USERQUOTA_PROPS; p++) {
2820                 if (((p == ZFS_PROP_USERUSED || p == ZFS_PROP_USERQUOTA) &&
2821                     !(types & (USTYPE_PSX_USR | USTYPE_SMB_USR))) ||
2822                     ((p == ZFS_PROP_GROUPUSED || p == ZFS_PROP_GROUPQUOTA) &&
2823                     !(types & (USTYPE_PSX_GRP | USTYPE_SMB_GRP))))
2824                         continue;
2825                 cb.cb_prop = p;
2826                 if ((ret = zfs_userspace(zhp, p, userspace_cb, &cb)) != 0)
2827                         return (ret);
2828         }
2829
2830         /* Sort the list */
2831         if ((node = uu_avl_first(avl_tree)) == NULL)
2832                 return (0);
2833
2834         us_populated = B_TRUE;
2835
2836         listpool = uu_list_pool_create("tmplist", sizeof (us_node_t),
2837             offsetof(us_node_t, usn_listnode), NULL, UU_DEFAULT);
2838         list = uu_list_create(listpool, NULL, UU_DEFAULT);
2839         uu_list_node_init(node, &node->usn_listnode, listpool);
2840
2841         while (node != NULL) {
2842                 rmnode = node;
2843                 node = uu_avl_next(avl_tree, node);
2844                 uu_avl_remove(avl_tree, rmnode);
2845                 if (uu_list_find(list, rmnode, NULL, &idx2) == NULL)
2846                         uu_list_insert(list, rmnode, idx2);
2847         }
2848
2849         for (node = uu_list_first(list); node != NULL;
2850             node = uu_list_next(list, node)) {
2851                 us_sort_info_t sortinfo = { sortcol, cb.cb_numname };
2852
2853                 if (uu_avl_find(avl_tree, node, &sortinfo, &idx) == NULL)
2854                         uu_avl_insert(avl_tree, node, idx);
2855         }
2856
2857         uu_list_destroy(list);
2858         uu_list_pool_destroy(listpool);
2859
2860         /* Print and free node nvlist memory */
2861         print_us(scripted, parsable, fields, types, cb.cb_width, B_TRUE,
2862             cb.cb_avl);
2863
2864         zfs_free_sort_columns(sortcol);
2865
2866         /* Clean up the AVL tree */
2867         if ((walk = uu_avl_walk_start(cb.cb_avl, UU_WALK_ROBUST)) == NULL)
2868                 nomem();
2869
2870         while ((node = uu_avl_walk_next(walk)) != NULL) {
2871                 uu_avl_remove(cb.cb_avl, node);
2872                 free(node);
2873         }
2874
2875         uu_avl_walk_end(walk);
2876         uu_avl_destroy(avl_tree);
2877         uu_avl_pool_destroy(avl_pool);
2878
2879         return (ret);
2880 }
2881
2882 /*
2883  * list [-Hp][-r|-d max] [-o property[,...]] [-s property] ... [-S property]
2884  *      [-t type[,...]] [filesystem|volume|snapshot] ...
2885  *
2886  *      -H      Scripted mode; elide headers and separate columns by tabs
2887  *      -p      Display values in parsable (literal) format.
2888  *      -r      Recurse over all children
2889  *      -d      Limit recursion by depth.
2890  *      -o      Control which fields to display.
2891  *      -s      Specify sort columns, descending order.
2892  *      -S      Specify sort columns, ascending order.
2893  *      -t      Control which object types to display.
2894  *
2895  * When given no arguments, list all filesystems in the system.
2896  * Otherwise, list the specified datasets, optionally recursing down them if
2897  * '-r' is specified.
2898  */
2899 typedef struct list_cbdata {
2900         boolean_t       cb_first;
2901         boolean_t       cb_literal;
2902         boolean_t       cb_scripted;
2903         zprop_list_t    *cb_proplist;
2904 } list_cbdata_t;
2905
2906 /*
2907  * Given a list of columns to display, output appropriate headers for each one.
2908  */
2909 static void
2910 print_header(list_cbdata_t *cb)
2911 {
2912         zprop_list_t *pl = cb->cb_proplist;
2913         char headerbuf[ZFS_MAXPROPLEN];
2914         const char *header;
2915         int i;
2916         boolean_t first = B_TRUE;
2917         boolean_t right_justify;
2918
2919         for (; pl != NULL; pl = pl->pl_next) {
2920                 if (!first) {
2921                         (void) printf("  ");
2922                 } else {
2923                         first = B_FALSE;
2924                 }
2925
2926                 right_justify = B_FALSE;
2927                 if (pl->pl_prop != ZPROP_INVAL) {
2928                         header = zfs_prop_column_name(pl->pl_prop);
2929                         right_justify = zfs_prop_align_right(pl->pl_prop);
2930                 } else {
2931                         for (i = 0; pl->pl_user_prop[i] != '\0'; i++)
2932                                 headerbuf[i] = toupper(pl->pl_user_prop[i]);
2933                         headerbuf[i] = '\0';
2934                         header = headerbuf;
2935                 }
2936
2937                 if (pl->pl_next == NULL && !right_justify)
2938                         (void) printf("%s", header);
2939                 else if (right_justify)
2940                         (void) printf("%*s", (int)pl->pl_width, header);
2941                 else
2942                         (void) printf("%-*s", (int)pl->pl_width, header);
2943         }
2944
2945         (void) printf("\n");
2946 }
2947
2948 /*
2949  * Given a dataset and a list of fields, print out all the properties according
2950  * to the described layout.
2951  */
2952 static void
2953 print_dataset(zfs_handle_t *zhp, list_cbdata_t *cb)
2954 {
2955         zprop_list_t *pl = cb->cb_proplist;
2956         boolean_t first = B_TRUE;
2957         char property[ZFS_MAXPROPLEN];
2958         nvlist_t *userprops = zfs_get_user_props(zhp);
2959         nvlist_t *propval;
2960         char *propstr;
2961         boolean_t right_justify;
2962
2963         for (; pl != NULL; pl = pl->pl_next) {
2964                 if (!first) {
2965                         if (cb->cb_scripted)
2966                                 (void) printf("\t");
2967                         else
2968                                 (void) printf("  ");
2969                 } else {
2970                         first = B_FALSE;
2971                 }
2972
2973                 if (pl->pl_prop == ZFS_PROP_NAME) {
2974                         (void) strlcpy(property, zfs_get_name(zhp),
2975                             sizeof (property));
2976                         propstr = property;
2977                         right_justify = zfs_prop_align_right(pl->pl_prop);
2978                 } else if (pl->pl_prop != ZPROP_INVAL) {
2979                         if (zfs_prop_get(zhp, pl->pl_prop, property,
2980                             sizeof (property), NULL, NULL, 0,
2981                             cb->cb_literal) != 0)
2982                                 propstr = "-";
2983                         else
2984                                 propstr = property;
2985                         right_justify = zfs_prop_align_right(pl->pl_prop);
2986                 } else if (zfs_prop_userquota(pl->pl_user_prop)) {
2987                         if (zfs_prop_get_userquota(zhp, pl->pl_user_prop,
2988                             property, sizeof (property), cb->cb_literal) != 0)
2989                                 propstr = "-";
2990                         else
2991                                 propstr = property;
2992                         right_justify = B_TRUE;
2993                 } else if (zfs_prop_written(pl->pl_user_prop)) {
2994                         if (zfs_prop_get_written(zhp, pl->pl_user_prop,
2995                             property, sizeof (property), cb->cb_literal) != 0)
2996                                 propstr = "-";
2997                         else
2998                                 propstr = property;
2999                         right_justify = B_TRUE;
3000                 } else {
3001                         if (nvlist_lookup_nvlist(userprops,
3002                             pl->pl_user_prop, &propval) != 0)
3003                                 propstr = "-";
3004                         else
3005                                 verify(nvlist_lookup_string(propval,
3006                                     ZPROP_VALUE, &propstr) == 0);
3007                         right_justify = B_FALSE;
3008                 }
3009
3010                 /*
3011                  * If this is being called in scripted mode, or if this is the
3012                  * last column and it is left-justified, don't include a width
3013                  * format specifier.
3014                  */
3015                 if (cb->cb_scripted || (pl->pl_next == NULL && !right_justify))
3016                         (void) printf("%s", propstr);
3017                 else if (right_justify)
3018                         (void) printf("%*s", (int)pl->pl_width, propstr);
3019                 else
3020                         (void) printf("%-*s", (int)pl->pl_width, propstr);
3021         }
3022
3023         (void) printf("\n");
3024 }
3025
3026 /*
3027  * Generic callback function to list a dataset or snapshot.
3028  */
3029 static int
3030 list_callback(zfs_handle_t *zhp, void *data)
3031 {
3032         list_cbdata_t *cbp = data;
3033
3034         if (cbp->cb_first) {
3035                 if (!cbp->cb_scripted)
3036                         print_header(cbp);
3037                 cbp->cb_first = B_FALSE;
3038         }
3039
3040         print_dataset(zhp, cbp);
3041
3042         return (0);
3043 }
3044
3045 static int
3046 zfs_do_list(int argc, char **argv)
3047 {
3048         int c;
3049         static char default_fields[] =
3050             "name,used,available,referenced,mountpoint";
3051         int types = ZFS_TYPE_DATASET;
3052         boolean_t types_specified = B_FALSE;
3053         char *fields = NULL;
3054         list_cbdata_t cb = { 0 };
3055         char *value;
3056         int limit = 0;
3057         int ret = 0;
3058         zfs_sort_column_t *sortcol = NULL;
3059         int flags = ZFS_ITER_PROP_LISTSNAPS | ZFS_ITER_ARGS_CAN_BE_PATHS;
3060
3061         /* check options */
3062         while ((c = getopt(argc, argv, "HS:d:o:prs:t:")) != -1) {
3063                 switch (c) {
3064                 case 'o':
3065                         fields = optarg;
3066                         break;
3067                 case 'p':
3068                         cb.cb_literal = B_TRUE;
3069                         flags |= ZFS_ITER_LITERAL_PROPS;
3070                         break;
3071                 case 'd':
3072                         limit = parse_depth(optarg, &flags);
3073                         break;
3074                 case 'r':
3075                         flags |= ZFS_ITER_RECURSE;
3076                         break;
3077                 case 'H':
3078                         cb.cb_scripted = B_TRUE;
3079                         break;
3080                 case 's':
3081                         if (zfs_add_sort_column(&sortcol, optarg,
3082                             B_FALSE) != 0) {
3083                                 (void) fprintf(stderr,
3084                                     gettext("invalid property '%s'\n"), optarg);
3085                                 usage(B_FALSE);
3086                         }
3087                         break;
3088                 case 'S':
3089                         if (zfs_add_sort_column(&sortcol, optarg,
3090                             B_TRUE) != 0) {
3091                                 (void) fprintf(stderr,
3092                                     gettext("invalid property '%s'\n"), optarg);
3093                                 usage(B_FALSE);
3094                         }
3095                         break;
3096                 case 't':
3097                         types = 0;
3098                         types_specified = B_TRUE;
3099                         flags &= ~ZFS_ITER_PROP_LISTSNAPS;
3100                         while (*optarg != '\0') {
3101                                 static char *type_subopts[] = { "filesystem",
3102                                     "volume", "snapshot", "snap", "bookmark",
3103                                     "all", NULL };
3104
3105                                 switch (getsubopt(&optarg, type_subopts,
3106                                     &value)) {
3107                                 case 0:
3108                                         types |= ZFS_TYPE_FILESYSTEM;
3109                                         break;
3110                                 case 1:
3111                                         types |= ZFS_TYPE_VOLUME;
3112                                         break;
3113                                 case 2:
3114                                 case 3:
3115                                         types |= ZFS_TYPE_SNAPSHOT;
3116                                         break;
3117                                 case 4:
3118                                         types |= ZFS_TYPE_BOOKMARK;
3119                                         break;
3120                                 case 5:
3121                                         types = ZFS_TYPE_DATASET |
3122                                             ZFS_TYPE_BOOKMARK;
3123                                         break;
3124                                 default:
3125                                         (void) fprintf(stderr,
3126                                             gettext("invalid type '%s'\n"),
3127                                             value);
3128                                         usage(B_FALSE);
3129                                 }
3130                         }
3131                         break;
3132                 case ':':
3133                         (void) fprintf(stderr, gettext("missing argument for "
3134                             "'%c' option\n"), optopt);
3135                         usage(B_FALSE);
3136                         break;
3137                 case '?':
3138                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3139                             optopt);
3140                         usage(B_FALSE);
3141                 }
3142         }
3143
3144         argc -= optind;
3145         argv += optind;
3146
3147         if (fields == NULL)
3148                 fields = default_fields;
3149
3150         /*
3151          * If we are only going to list snapshot names and sort by name,
3152          * then we can use faster version.
3153          */
3154         if (strcmp(fields, "name") == 0 && zfs_sort_only_by_name(sortcol))
3155                 flags |= ZFS_ITER_SIMPLE;
3156
3157         /*
3158          * If "-o space" and no types were specified, don't display snapshots.
3159          */
3160         if (strcmp(fields, "space") == 0 && types_specified == B_FALSE)
3161                 types &= ~ZFS_TYPE_SNAPSHOT;
3162
3163         /*
3164          * If the user specifies '-o all', the zprop_get_list() doesn't
3165          * normally include the name of the dataset.  For 'zfs list', we always
3166          * want this property to be first.
3167          */
3168         if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
3169             != 0)
3170                 usage(B_FALSE);
3171
3172         cb.cb_first = B_TRUE;
3173
3174         ret = zfs_for_each(argc, argv, flags, types, sortcol, &cb.cb_proplist,
3175             limit, list_callback, &cb);
3176
3177         zprop_free_list(cb.cb_proplist);
3178         zfs_free_sort_columns(sortcol);
3179
3180         if (ret == 0 && cb.cb_first && !cb.cb_scripted)
3181                 (void) fprintf(stderr, gettext("no datasets available\n"));
3182
3183         return (ret);
3184 }
3185
3186 /*
3187  * zfs rename [-f] <fs | snap | vol> <fs | snap | vol>
3188  * zfs rename [-f] -p <fs | vol> <fs | vol>
3189  * zfs rename -r <snap> <snap>
3190  *
3191  * Renames the given dataset to another of the same type.
3192  *
3193  * The '-p' flag creates all the non-existing ancestors of the target first.
3194  */
3195 /* ARGSUSED */
3196 static int
3197 zfs_do_rename(int argc, char **argv)
3198 {
3199         zfs_handle_t *zhp;
3200         int c;
3201         int ret = 0;
3202         boolean_t recurse = B_FALSE;
3203         boolean_t parents = B_FALSE;
3204         boolean_t force_unmount = B_FALSE;
3205
3206         /* check options */
3207         while ((c = getopt(argc, argv, "prf")) != -1) {
3208                 switch (c) {
3209                 case 'p':
3210                         parents = B_TRUE;
3211                         break;
3212                 case 'r':
3213                         recurse = B_TRUE;
3214                         break;
3215                 case 'f':
3216                         force_unmount = B_TRUE;
3217                         break;
3218                 case '?':
3219                 default:
3220                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3221                             optopt);
3222                         usage(B_FALSE);
3223                 }
3224         }
3225
3226         argc -= optind;
3227         argv += optind;
3228
3229         /* check number of arguments */
3230         if (argc < 1) {
3231                 (void) fprintf(stderr, gettext("missing source dataset "
3232                     "argument\n"));
3233                 usage(B_FALSE);
3234         }
3235         if (argc < 2) {
3236                 (void) fprintf(stderr, gettext("missing target dataset "
3237                     "argument\n"));
3238                 usage(B_FALSE);
3239         }
3240         if (argc > 2) {
3241                 (void) fprintf(stderr, gettext("too many arguments\n"));
3242                 usage(B_FALSE);
3243         }
3244
3245         if (recurse && parents) {
3246                 (void) fprintf(stderr, gettext("-p and -r options are mutually "
3247                     "exclusive\n"));
3248                 usage(B_FALSE);
3249         }
3250
3251         if (recurse && strchr(argv[0], '@') == 0) {
3252                 (void) fprintf(stderr, gettext("source dataset for recursive "
3253                     "rename must be a snapshot\n"));
3254                 usage(B_FALSE);
3255         }
3256
3257         if ((zhp = zfs_open(g_zfs, argv[0], parents ? ZFS_TYPE_FILESYSTEM |
3258             ZFS_TYPE_VOLUME : ZFS_TYPE_DATASET)) == NULL)
3259                 return (1);
3260
3261         /* If we were asked and the name looks good, try to create ancestors. */
3262         if (parents && zfs_name_valid(argv[1], zfs_get_type(zhp)) &&
3263             zfs_create_ancestors(g_zfs, argv[1]) != 0) {
3264                 zfs_close(zhp);
3265                 return (1);
3266         }
3267
3268         ret = (zfs_rename(zhp, argv[1], recurse, force_unmount) != 0);
3269
3270         zfs_close(zhp);
3271         return (ret);
3272 }
3273
3274 /*
3275  * zfs promote <fs>
3276  *
3277  * Promotes the given clone fs to be the parent
3278  */
3279 /* ARGSUSED */
3280 static int
3281 zfs_do_promote(int argc, char **argv)
3282 {
3283         zfs_handle_t *zhp;
3284         int ret = 0;
3285
3286         /* check options */
3287         if (argc > 1 && argv[1][0] == '-') {
3288                 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3289                     argv[1][1]);
3290                 usage(B_FALSE);
3291         }
3292
3293         /* check number of arguments */
3294         if (argc < 2) {
3295                 (void) fprintf(stderr, gettext("missing clone filesystem"
3296                     " argument\n"));
3297                 usage(B_FALSE);
3298         }
3299         if (argc > 2) {
3300                 (void) fprintf(stderr, gettext("too many arguments\n"));
3301                 usage(B_FALSE);
3302         }
3303
3304         zhp = zfs_open(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3305         if (zhp == NULL)
3306                 return (1);
3307
3308         ret = (zfs_promote(zhp) != 0);
3309
3310
3311         zfs_close(zhp);
3312         return (ret);
3313 }
3314
3315 /*
3316  * zfs rollback [-rRf] <snapshot>
3317  *
3318  *      -r      Delete any intervening snapshots before doing rollback
3319  *      -R      Delete any snapshots and their clones
3320  *      -f      ignored for backwards compatability
3321  *
3322  * Given a filesystem, rollback to a specific snapshot, discarding any changes
3323  * since then and making it the active dataset.  If more recent snapshots exist,
3324  * the command will complain unless the '-r' flag is given.
3325  */
3326 typedef struct rollback_cbdata {
3327         uint64_t        cb_create;
3328         boolean_t       cb_first;
3329         int             cb_doclones;
3330         char            *cb_target;
3331         int             cb_error;
3332         boolean_t       cb_recurse;
3333 } rollback_cbdata_t;
3334
3335 static int
3336 rollback_check_dependent(zfs_handle_t *zhp, void *data)
3337 {
3338         rollback_cbdata_t *cbp = data;
3339
3340         if (cbp->cb_first && cbp->cb_recurse) {
3341                 (void) fprintf(stderr, gettext("cannot rollback to "
3342                     "'%s': clones of previous snapshots exist\n"),
3343                     cbp->cb_target);
3344                 (void) fprintf(stderr, gettext("use '-R' to "
3345                     "force deletion of the following clones and "
3346                     "dependents:\n"));
3347                 cbp->cb_first = 0;
3348                 cbp->cb_error = 1;
3349         }
3350
3351         (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
3352
3353         zfs_close(zhp);
3354         return (0);
3355 }
3356
3357
3358 /*
3359  * Report any snapshots more recent than the one specified.  Used when '-r' is
3360  * not specified.  We reuse this same callback for the snapshot dependents - if
3361  * 'cb_dependent' is set, then this is a dependent and we should report it
3362  * without checking the transaction group.
3363  */
3364 static int
3365 rollback_check(zfs_handle_t *zhp, void *data)
3366 {
3367         rollback_cbdata_t *cbp = data;
3368
3369         if (cbp->cb_doclones) {
3370                 zfs_close(zhp);
3371                 return (0);
3372         }
3373
3374         if (zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > cbp->cb_create) {
3375                 if (cbp->cb_first && !cbp->cb_recurse) {
3376                         (void) fprintf(stderr, gettext("cannot "
3377                             "rollback to '%s': more recent snapshots "
3378                             "or bookmarks exist\n"),
3379                             cbp->cb_target);
3380                         (void) fprintf(stderr, gettext("use '-r' to "
3381                             "force deletion of the following "
3382                             "snapshots and bookmarks:\n"));
3383                         cbp->cb_first = 0;
3384                         cbp->cb_error = 1;
3385                 }
3386
3387                 if (cbp->cb_recurse) {
3388                         if (zfs_iter_dependents(zhp, B_TRUE,
3389                             rollback_check_dependent, cbp) != 0) {
3390                                 zfs_close(zhp);
3391                                 return (-1);
3392                         }
3393                 } else {
3394                         (void) fprintf(stderr, "%s\n",
3395                             zfs_get_name(zhp));
3396                 }
3397         }
3398         zfs_close(zhp);
3399         return (0);
3400 }
3401
3402 static int
3403 zfs_do_rollback(int argc, char **argv)
3404 {
3405         int ret = 0;
3406         int c;
3407         boolean_t force = B_FALSE;
3408         rollback_cbdata_t cb = { 0 };
3409         zfs_handle_t *zhp, *snap;
3410         char parentname[ZFS_MAXNAMELEN];
3411         char *delim;
3412
3413         /* check options */
3414         while ((c = getopt(argc, argv, "rRf")) != -1) {
3415                 switch (c) {
3416                 case 'r':
3417                         cb.cb_recurse = 1;
3418                         break;
3419                 case 'R':
3420                         cb.cb_recurse = 1;
3421                         cb.cb_doclones = 1;
3422                         break;
3423                 case 'f':
3424                         force = B_TRUE;
3425                         break;
3426                 case '?':
3427                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3428                             optopt);
3429                         usage(B_FALSE);
3430                 }
3431         }
3432
3433         argc -= optind;
3434         argv += optind;
3435
3436         /* check number of arguments */
3437         if (argc < 1) {
3438                 (void) fprintf(stderr, gettext("missing dataset argument\n"));
3439                 usage(B_FALSE);
3440         }
3441         if (argc > 1) {
3442                 (void) fprintf(stderr, gettext("too many arguments\n"));
3443                 usage(B_FALSE);
3444         }
3445
3446         /* open the snapshot */
3447         if ((snap = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
3448                 return (1);
3449
3450         /* open the parent dataset */
3451         (void) strlcpy(parentname, argv[0], sizeof (parentname));
3452         verify((delim = strrchr(parentname, '@')) != NULL);
3453         *delim = '\0';
3454         if ((zhp = zfs_open(g_zfs, parentname, ZFS_TYPE_DATASET)) == NULL) {
3455                 zfs_close(snap);
3456                 return (1);
3457         }
3458
3459         /*
3460          * Check for more recent snapshots and/or clones based on the presence
3461          * of '-r' and '-R'.
3462          */
3463         cb.cb_target = argv[0];
3464         cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG);
3465         cb.cb_first = B_TRUE;
3466         cb.cb_error = 0;
3467         if ((ret = zfs_iter_snapshots(zhp, B_FALSE, rollback_check, &cb)) != 0)
3468                 goto out;
3469         if ((ret = zfs_iter_bookmarks(zhp, rollback_check, &cb)) != 0)
3470                 goto out;
3471
3472         if ((ret = cb.cb_error) != 0)
3473                 goto out;
3474
3475         /*
3476          * Rollback parent to the given snapshot.
3477          */
3478         ret = zfs_rollback(zhp, snap, force);
3479
3480 out:
3481         zfs_close(snap);
3482         zfs_close(zhp);
3483
3484         if (ret == 0)
3485                 return (0);
3486         else
3487                 return (1);
3488 }
3489
3490 /*
3491  * zfs set property=value ... { fs | snap | vol } ...
3492  *
3493  * Sets the given properties for all datasets specified on the command line.
3494  */
3495
3496 static int
3497 set_callback(zfs_handle_t *zhp, void *data)
3498 {
3499         nvlist_t *props = data;
3500
3501         if (zfs_prop_set_list(zhp, props) != 0) {
3502                 switch (libzfs_errno(g_zfs)) {
3503                 case EZFS_MOUNTFAILED:
3504                         (void) fprintf(stderr, gettext("property may be set "
3505                             "but unable to remount filesystem\n"));
3506                         break;
3507                 case EZFS_SHARENFSFAILED:
3508                         (void) fprintf(stderr, gettext("property may be set "
3509                             "but unable to reshare filesystem\n"));
3510                         break;
3511                 }
3512                 return (1);
3513         }
3514         return (0);
3515 }
3516
3517 static int
3518 zfs_do_set(int argc, char **argv)
3519 {
3520         nvlist_t *props = NULL;
3521         int ds_start = -1; /* argv idx of first dataset arg */
3522         int ret = 0;
3523         int i;
3524
3525         /* check for options */
3526         if (argc > 1 && argv[1][0] == '-') {
3527                 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3528                     argv[1][1]);
3529                 usage(B_FALSE);
3530         }
3531
3532         /* check number of arguments */
3533         if (argc < 2) {
3534                 (void) fprintf(stderr, gettext("missing arguments\n"));
3535                 usage(B_FALSE);
3536         }
3537         if (argc < 3) {
3538                 if (strchr(argv[1], '=') == NULL) {
3539                         (void) fprintf(stderr, gettext("missing property=value "
3540                             "argument(s)\n"));
3541                 } else {
3542                         (void) fprintf(stderr, gettext("missing dataset "
3543                             "name(s)\n"));
3544                 }
3545                 usage(B_FALSE);
3546         }
3547
3548         /* validate argument order:  prop=val args followed by dataset args */
3549         for (i = 1; i < argc; i++) {
3550                 if (strchr(argv[i], '=') != NULL) {
3551                         if (ds_start > 0) {
3552                                 /* out-of-order prop=val argument */
3553                                 (void) fprintf(stderr, gettext("invalid "
3554                                     "argument order\n"));
3555                                 usage(B_FALSE);
3556                         }
3557                 } else if (ds_start < 0) {
3558                         ds_start = i;
3559                 }
3560         }
3561         if (ds_start < 0) {
3562                 (void) fprintf(stderr, gettext("missing dataset name(s)\n"));
3563                 usage(B_FALSE);
3564         }
3565
3566         /* Populate a list of property settings */
3567         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
3568                 nomem();
3569         for (i = 1; i < ds_start; i++) {
3570                 if ((ret = parseprop(props, argv[i])) != 0)
3571                         goto error;
3572         }
3573
3574         ret = zfs_for_each(argc - ds_start, argv + ds_start, 0,
3575             ZFS_TYPE_DATASET, NULL, NULL, 0, set_callback, props);
3576
3577 error:
3578         nvlist_free(props);
3579         return (ret);
3580 }
3581
3582 typedef struct snap_cbdata {
3583         nvlist_t *sd_nvl;
3584         boolean_t sd_recursive;
3585         const char *sd_snapname;
3586 } snap_cbdata_t;
3587
3588 static int
3589 zfs_snapshot_cb(zfs_handle_t *zhp, void *arg)
3590 {
3591         snap_cbdata_t *sd = arg;
3592         char *name;
3593         int rv = 0;
3594         int error;
3595
3596         if (sd->sd_recursive &&
3597             zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) != 0) {
3598                 zfs_close(zhp);
3599                 return (0);
3600         }
3601
3602         error = asprintf(&name, "%s@%s", zfs_get_name(zhp), sd->sd_snapname);
3603         if (error == -1)
3604                 nomem();
3605         fnvlist_add_boolean(sd->sd_nvl, name);
3606         free(name);
3607
3608         if (sd->sd_recursive)
3609                 rv = zfs_iter_filesystems(zhp, zfs_snapshot_cb, sd);
3610         zfs_close(zhp);
3611         return (rv);
3612 }
3613
3614 /*
3615  * zfs snapshot [-r] [-o prop=value] ... <fs@snap>
3616  *
3617  * Creates a snapshot with the given name.  While functionally equivalent to
3618  * 'zfs create', it is a separate command to differentiate intent.
3619  */
3620 static int
3621 zfs_do_snapshot(int argc, char **argv)
3622 {
3623         int ret = 0;
3624         signed char c;
3625         nvlist_t *props;
3626         snap_cbdata_t sd = { 0 };
3627         boolean_t multiple_snaps = B_FALSE;
3628
3629         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
3630                 nomem();
3631         if (nvlist_alloc(&sd.sd_nvl, NV_UNIQUE_NAME, 0) != 0)
3632                 nomem();
3633
3634         /* check options */
3635         while ((c = getopt(argc, argv, "ro:")) != -1) {
3636                 switch (c) {
3637                 case 'o':
3638                         if (parseprop(props, optarg) != 0)
3639                                 return (1);
3640                         break;
3641                 case 'r':
3642                         sd.sd_recursive = B_TRUE;
3643                         multiple_snaps = B_TRUE;
3644                         break;
3645                 case '?':
3646                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3647                             optopt);
3648                         goto usage;
3649                 }
3650         }
3651
3652         argc -= optind;
3653         argv += optind;
3654
3655         /* check number of arguments */
3656         if (argc < 1) {
3657                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
3658                 goto usage;
3659         }
3660
3661         if (argc > 1)
3662                 multiple_snaps = B_TRUE;
3663         for (; argc > 0; argc--, argv++) {
3664                 char *atp;
3665                 zfs_handle_t *zhp;
3666
3667                 atp = strchr(argv[0], '@');
3668                 if (atp == NULL)
3669                         goto usage;
3670                 *atp = '\0';
3671                 sd.sd_snapname = atp + 1;
3672                 zhp = zfs_open(g_zfs, argv[0],
3673                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3674                 if (zhp == NULL)
3675                         goto usage;
3676                 if (zfs_snapshot_cb(zhp, &sd) != 0)
3677                         goto usage;
3678         }
3679
3680         ret = zfs_snapshot_nvl(g_zfs, sd.sd_nvl, props);
3681         nvlist_free(sd.sd_nvl);
3682         nvlist_free(props);
3683         if (ret != 0 && multiple_snaps)
3684                 (void) fprintf(stderr, gettext("no snapshots were created\n"));
3685         return (ret != 0);
3686
3687 usage:
3688         nvlist_free(sd.sd_nvl);
3689         nvlist_free(props);
3690         usage(B_FALSE);
3691         return (-1);
3692 }
3693
3694 /*
3695  * Send a backup stream to stdout.
3696  */
3697 static int
3698 zfs_do_send(int argc, char **argv)
3699 {
3700         char *fromname = NULL;
3701         char *toname = NULL;
3702         char *cp;
3703         zfs_handle_t *zhp;
3704         sendflags_t flags = { 0 };
3705         int c, err;
3706         nvlist_t *dbgnv = NULL;
3707         boolean_t extraverbose = B_FALSE;
3708
3709         /* check options */
3710         while ((c = getopt(argc, argv, ":i:I:RDpvnPLe")) != -1) {
3711                 switch (c) {
3712                 case 'i':
3713                         if (fromname)
3714                                 usage(B_FALSE);
3715                         fromname = optarg;
3716                         break;
3717                 case 'I':
3718                         if (fromname)
3719                                 usage(B_FALSE);
3720                         fromname = optarg;
3721                         flags.doall = B_TRUE;
3722                         break;
3723                 case 'R':
3724                         flags.replicate = B_TRUE;
3725                         break;
3726                 case 'p':
3727                         flags.props = B_TRUE;
3728                         break;
3729                 case 'P':
3730                         flags.parsable = B_TRUE;
3731                         flags.verbose = B_TRUE;
3732                         break;
3733                 case 'v':
3734                         if (flags.verbose)
3735                                 extraverbose = B_TRUE;
3736                         flags.verbose = B_TRUE;
3737                         flags.progress = B_TRUE;
3738                         break;
3739                 case 'D':
3740                         flags.dedup = B_TRUE;
3741                         break;
3742                 case 'n':
3743                         flags.dryrun = B_TRUE;
3744                         break;
3745                 case 'L':
3746                         flags.largeblock = B_TRUE;
3747                         break;
3748                 case 'e':
3749                         flags.embed_data = B_TRUE;
3750                         break;
3751                 case ':':
3752                         (void) fprintf(stderr, gettext("missing argument for "
3753                             "'%c' option\n"), optopt);
3754                         usage(B_FALSE);
3755                         break;
3756                 case '?':
3757                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3758                             optopt);
3759                         usage(B_FALSE);
3760                 }
3761         }
3762
3763         argc -= optind;
3764         argv += optind;
3765
3766         /* check number of arguments */
3767         if (argc < 1) {
3768                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
3769                 usage(B_FALSE);
3770         }
3771         if (argc > 1) {
3772                 (void) fprintf(stderr, gettext("too many arguments\n"));
3773                 usage(B_FALSE);
3774         }
3775
3776         if (!flags.dryrun && isatty(STDOUT_FILENO)) {
3777                 (void) fprintf(stderr,
3778                     gettext("Error: Stream can not be written to a terminal.\n"
3779                     "You must redirect standard output.\n"));
3780                 return (1);
3781         }
3782
3783         /*
3784          * Special case sending a filesystem, or from a bookmark.
3785          */
3786         if (strchr(argv[0], '@') == NULL ||
3787             (fromname && strchr(fromname, '#') != NULL)) {
3788                 char frombuf[ZFS_MAXNAMELEN];
3789                 enum lzc_send_flags lzc_flags = 0;
3790
3791                 if (flags.replicate || flags.doall || flags.props ||
3792                     flags.dedup || flags.dryrun || flags.verbose ||
3793                     flags.progress) {
3794                         (void) fprintf(stderr,
3795                             gettext("Error: "
3796                             "Unsupported flag with filesystem or bookmark.\n"));
3797                         return (1);
3798                 }
3799
3800                 zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET);
3801                 if (zhp == NULL)
3802                         return (1);
3803
3804                 if (flags.largeblock)
3805                         lzc_flags |= LZC_SEND_FLAG_LARGE_BLOCK;
3806                 if (flags.embed_data)
3807                         lzc_flags |= LZC_SEND_FLAG_EMBED_DATA;
3808
3809                 if (fromname != NULL &&
3810                     (fromname[0] == '#' || fromname[0] == '@')) {
3811                         /*
3812                          * Incremental source name begins with # or @.
3813                          * Default to same fs as target.
3814                          */
3815                         (void) strncpy(frombuf, argv[0], sizeof (frombuf));
3816                         cp = strchr(frombuf, '@');
3817                         if (cp != NULL)
3818                                 *cp = '\0';
3819                         (void) strlcat(frombuf, fromname, sizeof (frombuf));
3820                         fromname = frombuf;
3821                 }
3822                 err = zfs_send_one(zhp, fromname, STDOUT_FILENO, lzc_flags);
3823                 zfs_close(zhp);
3824                 return (err != 0);
3825         }
3826
3827         cp = strchr(argv[0], '@');
3828         *cp = '\0';
3829         toname = cp + 1;
3830         zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3831         if (zhp == NULL)
3832                 return (1);
3833
3834         /*
3835          * If they specified the full path to the snapshot, chop off
3836          * everything except the short name of the snapshot, but special
3837          * case if they specify the origin.
3838          */
3839         if (fromname && (cp = strchr(fromname, '@')) != NULL) {
3840                 char origin[ZFS_MAXNAMELEN];
3841                 zprop_source_t src;
3842
3843                 (void) zfs_prop_get(zhp, ZFS_PROP_ORIGIN,
3844                     origin, sizeof (origin), &src, NULL, 0, B_FALSE);
3845
3846                 if (strcmp(origin, fromname) == 0) {
3847                         fromname = NULL;
3848                         flags.fromorigin = B_TRUE;
3849                 } else {
3850                         *cp = '\0';
3851                         if (cp != fromname && strcmp(argv[0], fromname)) {
3852                                 (void) fprintf(stderr,
3853                                     gettext("incremental source must be "
3854                                     "in same filesystem\n"));
3855                                 usage(B_FALSE);
3856                         }
3857                         fromname = cp + 1;
3858                         if (strchr(fromname, '@') || strchr(fromname, '/')) {
3859                                 (void) fprintf(stderr,
3860                                     gettext("invalid incremental source\n"));
3861                                 usage(B_FALSE);
3862                         }
3863                 }
3864         }
3865
3866         if (flags.replicate && fromname == NULL)
3867                 flags.doall = B_TRUE;
3868
3869         err = zfs_send(zhp, fromname, toname, &flags, STDOUT_FILENO, NULL, 0,
3870             extraverbose ? &dbgnv : NULL);
3871
3872         if (extraverbose && dbgnv != NULL) {
3873                 /*
3874                  * dump_nvlist prints to stdout, but that's been
3875                  * redirected to a file.  Make it print to stderr
3876                  * instead.
3877                  */
3878                 (void) dup2(STDERR_FILENO, STDOUT_FILENO);
3879                 dump_nvlist(dbgnv, 0);
3880                 nvlist_free(dbgnv);
3881         }
3882         zfs_close(zhp);
3883
3884         return (err != 0);
3885 }
3886
3887 /*
3888  * zfs receive [-vnFu] [-d | -e] <fs@snap>
3889  *
3890  * Restore a backup stream from stdin.
3891  */
3892 static int
3893 zfs_do_receive(int argc, char **argv)
3894 {
3895         int c, err;
3896         recvflags_t flags = { 0 };
3897         nvlist_t *props;
3898         nvpair_t *nvp = NULL;
3899
3900         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
3901                 nomem();
3902
3903         /* check options */
3904         while ((c = getopt(argc, argv, ":o:denuvF")) != -1) {
3905                 switch (c) {
3906                 case 'o':
3907                         if (parseprop(props, optarg) != 0)
3908                                 return (1);
3909                         break;
3910                 case 'd':
3911                         flags.isprefix = B_TRUE;
3912                         break;
3913                 case 'e':
3914                         flags.isprefix = B_TRUE;
3915                         flags.istail = B_TRUE;
3916                         break;
3917                 case 'n':
3918                         flags.dryrun = B_TRUE;
3919                         break;
3920                 case 'u':
3921                         flags.nomount = B_TRUE;
3922                         break;
3923                 case 'v':
3924                         flags.verbose = B_TRUE;
3925                         break;
3926                 case 'F':
3927                         flags.force = B_TRUE;
3928                         break;
3929                 case ':':
3930                         (void) fprintf(stderr, gettext("missing argument for "
3931                             "'%c' option\n"), optopt);
3932                         usage(B_FALSE);
3933                         break;
3934                 case '?':
3935                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3936                             optopt);
3937                         usage(B_FALSE);
3938                 }
3939         }
3940
3941         argc -= optind;
3942         argv += optind;
3943
3944         /* check number of arguments */
3945         if (argc < 1) {
3946                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
3947                 usage(B_FALSE);
3948         }
3949         if (argc > 1) {
3950                 (void) fprintf(stderr, gettext("too many arguments\n"));
3951                 usage(B_FALSE);
3952         }
3953
3954         while ((nvp = nvlist_next_nvpair(props, nvp))) {
3955                 if (strcmp(nvpair_name(nvp), "origin") != 0) {
3956                         (void) fprintf(stderr, gettext("invalid option"));
3957                         usage(B_FALSE);
3958                 }
3959         }
3960
3961         if (isatty(STDIN_FILENO)) {
3962                 (void) fprintf(stderr,
3963                     gettext("Error: Backup stream can not be read "
3964                     "from a terminal.\n"
3965                     "You must redirect standard input.\n"));
3966                 return (1);
3967         }
3968
3969         err = zfs_receive(g_zfs, argv[0], props, &flags, STDIN_FILENO, NULL);
3970
3971         return (err != 0);
3972 }
3973
3974 /*
3975  * allow/unallow stuff
3976  */
3977 /* copied from zfs/sys/dsl_deleg.h */
3978 #define ZFS_DELEG_PERM_CREATE           "create"
3979 #define ZFS_DELEG_PERM_DESTROY          "destroy"
3980 #define ZFS_DELEG_PERM_SNAPSHOT         "snapshot"
3981 #define ZFS_DELEG_PERM_ROLLBACK         "rollback"
3982 #define ZFS_DELEG_PERM_CLONE            "clone"
3983 #define ZFS_DELEG_PERM_PROMOTE          "promote"
3984 #define ZFS_DELEG_PERM_RENAME           "rename"
3985 #define ZFS_DELEG_PERM_MOUNT            "mount"
3986 #define ZFS_DELEG_PERM_SHARE            "share"
3987 #define ZFS_DELEG_PERM_SEND             "send"
3988 #define ZFS_DELEG_PERM_RECEIVE          "receive"
3989 #define ZFS_DELEG_PERM_ALLOW            "allow"
3990 #define ZFS_DELEG_PERM_USERPROP         "userprop"
3991 #define ZFS_DELEG_PERM_VSCAN            "vscan" /* ??? */
3992 #define ZFS_DELEG_PERM_USERQUOTA        "userquota"
3993 #define ZFS_DELEG_PERM_GROUPQUOTA       "groupquota"
3994 #define ZFS_DELEG_PERM_USERUSED         "userused"
3995 #define ZFS_DELEG_PERM_GROUPUSED        "groupused"
3996 #define ZFS_DELEG_PERM_HOLD             "hold"
3997 #define ZFS_DELEG_PERM_RELEASE          "release"
3998 #define ZFS_DELEG_PERM_DIFF             "diff"
3999 #define ZFS_DELEG_PERM_BOOKMARK         "bookmark"
4000
4001 #define ZFS_NUM_DELEG_NOTES ZFS_DELEG_NOTE_NONE
4002
4003 static zfs_deleg_perm_tab_t zfs_deleg_perm_tbl[] = {
4004         { ZFS_DELEG_PERM_ALLOW, ZFS_DELEG_NOTE_ALLOW },
4005         { ZFS_DELEG_PERM_CLONE, ZFS_DELEG_NOTE_CLONE },
4006         { ZFS_DELEG_PERM_CREATE, ZFS_DELEG_NOTE_CREATE },
4007         { ZFS_DELEG_PERM_DESTROY, ZFS_DELEG_NOTE_DESTROY },
4008         { ZFS_DELEG_PERM_DIFF, ZFS_DELEG_NOTE_DIFF},
4009         { ZFS_DELEG_PERM_HOLD, ZFS_DELEG_NOTE_HOLD },
4010         { ZFS_DELEG_PERM_MOUNT, ZFS_DELEG_NOTE_MOUNT },
4011         { ZFS_DELEG_PERM_PROMOTE, ZFS_DELEG_NOTE_PROMOTE },
4012         { ZFS_DELEG_PERM_RECEIVE, ZFS_DELEG_NOTE_RECEIVE },
4013         { ZFS_DELEG_PERM_RELEASE, ZFS_DELEG_NOTE_RELEASE },
4014         { ZFS_DELEG_PERM_RENAME, ZFS_DELEG_NOTE_RENAME },
4015         { ZFS_DELEG_PERM_ROLLBACK, ZFS_DELEG_NOTE_ROLLBACK },
4016         { ZFS_DELEG_PERM_SEND, ZFS_DELEG_NOTE_SEND },
4017         { ZFS_DELEG_PERM_SHARE, ZFS_DELEG_NOTE_SHARE },
4018         { ZFS_DELEG_PERM_SNAPSHOT, ZFS_DELEG_NOTE_SNAPSHOT },
4019         { ZFS_DELEG_PERM_BOOKMARK, ZFS_DELEG_NOTE_BOOKMARK },
4020
4021         { ZFS_DELEG_PERM_GROUPQUOTA, ZFS_DELEG_NOTE_GROUPQUOTA },
4022         { ZFS_DELEG_PERM_GROUPUSED, ZFS_DELEG_NOTE_GROUPUSED },
4023         { ZFS_DELEG_PERM_USERPROP, ZFS_DELEG_NOTE_USERPROP },
4024         { ZFS_DELEG_PERM_USERQUOTA, ZFS_DELEG_NOTE_USERQUOTA },
4025         { ZFS_DELEG_PERM_USERUSED, ZFS_DELEG_NOTE_USERUSED },
4026         { NULL, ZFS_DELEG_NOTE_NONE }
4027 };
4028
4029 /* permission structure */
4030 typedef struct deleg_perm {
4031         zfs_deleg_who_type_t    dp_who_type;
4032         const char              *dp_name;
4033         boolean_t               dp_local;
4034         boolean_t               dp_descend;
4035 } deleg_perm_t;
4036
4037 /* */
4038 typedef struct deleg_perm_node {
4039         deleg_perm_t            dpn_perm;
4040
4041         uu_avl_node_t           dpn_avl_node;
4042 } deleg_perm_node_t;
4043
4044 typedef struct fs_perm fs_perm_t;
4045
4046 /* permissions set */
4047 typedef struct who_perm {
4048         zfs_deleg_who_type_t    who_type;
4049         const char              *who_name;              /* id */
4050         char                    who_ug_name[256];       /* user/group name */
4051         fs_perm_t               *who_fsperm;            /* uplink */
4052
4053         uu_avl_t                *who_deleg_perm_avl;    /* permissions */
4054 } who_perm_t;
4055
4056 /* */
4057 typedef struct who_perm_node {
4058         who_perm_t      who_perm;
4059         uu_avl_node_t   who_avl_node;
4060 } who_perm_node_t;
4061
4062 typedef struct fs_perm_set fs_perm_set_t;
4063 /* fs permissions */
4064 struct fs_perm {
4065         const char              *fsp_name;
4066
4067         uu_avl_t                *fsp_sc_avl;    /* sets,create */
4068         uu_avl_t                *fsp_uge_avl;   /* user,group,everyone */
4069
4070         fs_perm_set_t           *fsp_set;       /* uplink */
4071 };
4072
4073 /* */
4074 typedef struct fs_perm_node {
4075         fs_perm_t       fspn_fsperm;
4076         uu_avl_t        *fspn_avl;
4077
4078         uu_list_node_t  fspn_list_node;
4079 } fs_perm_node_t;
4080
4081 /* top level structure */
4082 struct fs_perm_set {
4083         uu_list_pool_t  *fsps_list_pool;
4084         uu_list_t       *fsps_list; /* list of fs_perms */
4085
4086         uu_avl_pool_t   *fsps_named_set_avl_pool;
4087         uu_avl_pool_t   *fsps_who_perm_avl_pool;
4088         uu_avl_pool_t   *fsps_deleg_perm_avl_pool;
4089 };
4090
4091 static inline const char *
4092 deleg_perm_type(zfs_deleg_note_t note)
4093 {
4094         /* subcommands */
4095         switch (note) {
4096                 /* SUBCOMMANDS */
4097                 /* OTHER */
4098         case ZFS_DELEG_NOTE_GROUPQUOTA:
4099         case ZFS_DELEG_NOTE_GROUPUSED:
4100         case ZFS_DELEG_NOTE_USERPROP:
4101         case ZFS_DELEG_NOTE_USERQUOTA:
4102         case ZFS_DELEG_NOTE_USERUSED:
4103                 /* other */
4104                 return (gettext("other"));
4105         default:
4106                 return (gettext("subcommand"));
4107         }
4108 }
4109
4110 static int inline
4111 who_type2weight(zfs_deleg_who_type_t who_type)
4112 {
4113         int res;
4114         switch (who_type) {
4115                 case ZFS_DELEG_NAMED_SET_SETS:
4116                 case ZFS_DELEG_NAMED_SET:
4117                         res = 0;
4118                         break;
4119                 case ZFS_DELEG_CREATE_SETS:
4120                 case ZFS_DELEG_CREATE:
4121                         res = 1;
4122                         break;
4123                 case ZFS_DELEG_USER_SETS:
4124                 case ZFS_DELEG_USER:
4125                         res = 2;
4126                         break;
4127                 case ZFS_DELEG_GROUP_SETS:
4128                 case ZFS_DELEG_GROUP:
4129                         res = 3;
4130                         break;
4131                 case ZFS_DELEG_EVERYONE_SETS:
4132                 case ZFS_DELEG_EVERYONE:
4133                         res = 4;
4134                         break;
4135                 default:
4136                         res = -1;
4137         }
4138
4139         return (res);
4140 }
4141
4142 /* ARGSUSED */
4143 static int
4144 who_perm_compare(const void *larg, const void *rarg, void *unused)
4145 {
4146         const who_perm_node_t *l = larg;
4147         const who_perm_node_t *r = rarg;
4148         zfs_deleg_who_type_t ltype = l->who_perm.who_type;
4149         zfs_deleg_who_type_t rtype = r->who_perm.who_type;
4150         int lweight = who_type2weight(ltype);
4151         int rweight = who_type2weight(rtype);
4152         int res = lweight - rweight;
4153         if (res == 0)
4154                 res = strncmp(l->who_perm.who_name, r->who_perm.who_name,
4155                     ZFS_MAX_DELEG_NAME-1);
4156
4157         if (res == 0)
4158                 return (0);
4159         if (res > 0)
4160                 return (1);
4161         else
4162                 return (-1);
4163 }
4164
4165 /* ARGSUSED */
4166 static int
4167 deleg_perm_compare(const void *larg, const void *rarg, void *unused)
4168 {
4169         const deleg_perm_node_t *l = larg;
4170         const deleg_perm_node_t *r = rarg;
4171         int res =  strncmp(l->dpn_perm.dp_name, r->dpn_perm.dp_name,
4172             ZFS_MAX_DELEG_NAME-1);
4173
4174         if (res == 0)
4175                 return (0);
4176
4177         if (res > 0)
4178                 return (1);
4179         else
4180                 return (-1);
4181 }
4182
4183 static inline void
4184 fs_perm_set_init(fs_perm_set_t *fspset)
4185 {
4186         bzero(fspset, sizeof (fs_perm_set_t));
4187
4188         if ((fspset->fsps_list_pool = uu_list_pool_create("fsps_list_pool",
4189             sizeof (fs_perm_node_t), offsetof(fs_perm_node_t, fspn_list_node),
4190             NULL, UU_DEFAULT)) == NULL)
4191                 nomem();
4192         if ((fspset->fsps_list = uu_list_create(fspset->fsps_list_pool, NULL,
4193             UU_DEFAULT)) == NULL)
4194                 nomem();
4195
4196         if ((fspset->fsps_named_set_avl_pool = uu_avl_pool_create(
4197             "named_set_avl_pool", sizeof (who_perm_node_t), offsetof(
4198             who_perm_node_t, who_avl_node), who_perm_compare,
4199             UU_DEFAULT)) == NULL)
4200                 nomem();
4201
4202         if ((fspset->fsps_who_perm_avl_pool = uu_avl_pool_create(
4203             "who_perm_avl_pool", sizeof (who_perm_node_t), offsetof(
4204             who_perm_node_t, who_avl_node), who_perm_compare,
4205             UU_DEFAULT)) == NULL)
4206                 nomem();
4207
4208         if ((fspset->fsps_deleg_perm_avl_pool = uu_avl_pool_create(
4209             "deleg_perm_avl_pool", sizeof (deleg_perm_node_t), offsetof(
4210             deleg_perm_node_t, dpn_avl_node), deleg_perm_compare, UU_DEFAULT))
4211             == NULL)
4212                 nomem();
4213 }
4214
4215 static inline void fs_perm_fini(fs_perm_t *);
4216 static inline void who_perm_fini(who_perm_t *);
4217
4218 static inline void
4219 fs_perm_set_fini(fs_perm_set_t *fspset)
4220 {
4221         fs_perm_node_t *node = uu_list_first(fspset->fsps_list);
4222
4223         while (node != NULL) {
4224                 fs_perm_node_t *next_node =
4225                     uu_list_next(fspset->fsps_list, node);
4226                 fs_perm_t *fsperm = &node->fspn_fsperm;
4227                 fs_perm_fini(fsperm);
4228                 uu_list_remove(fspset->fsps_list, node);
4229                 free(node);
4230                 node = next_node;
4231         }
4232
4233         uu_avl_pool_destroy(fspset->fsps_named_set_avl_pool);
4234         uu_avl_pool_destroy(fspset->fsps_who_perm_avl_pool);
4235         uu_avl_pool_destroy(fspset->fsps_deleg_perm_avl_pool);
4236 }
4237
4238 static inline void
4239 deleg_perm_init(deleg_perm_t *deleg_perm, zfs_deleg_who_type_t type,
4240     const char *name)
4241 {
4242         deleg_perm->dp_who_type = type;
4243         deleg_perm->dp_name = name;
4244 }
4245
4246 static inline void
4247 who_perm_init(who_perm_t *who_perm, fs_perm_t *fsperm,
4248     zfs_deleg_who_type_t type, const char *name)
4249 {
4250         uu_avl_pool_t   *pool;
4251         pool = fsperm->fsp_set->fsps_deleg_perm_avl_pool;
4252
4253         bzero(who_perm, sizeof (who_perm_t));
4254
4255         if ((who_perm->who_deleg_perm_avl = uu_avl_create(pool, NULL,
4256             UU_DEFAULT)) == NULL)
4257                 nomem();
4258
4259         who_perm->who_type = type;
4260         who_perm->who_name = name;
4261         who_perm->who_fsperm = fsperm;
4262 }
4263
4264 static inline void
4265 who_perm_fini(who_perm_t *who_perm)
4266 {
4267         deleg_perm_node_t *node = uu_avl_first(who_perm->who_deleg_perm_avl);
4268
4269         while (node != NULL) {
4270                 deleg_perm_node_t *next_node =
4271                     uu_avl_next(who_perm->who_deleg_perm_avl, node);
4272
4273                 uu_avl_remove(who_perm->who_deleg_perm_avl, node);
4274                 free(node);
4275                 node = next_node;
4276         }
4277
4278         uu_avl_destroy(who_perm->who_deleg_perm_avl);
4279 }
4280
4281 static inline void
4282 fs_perm_init(fs_perm_t *fsperm, fs_perm_set_t *fspset, const char *fsname)
4283 {
4284         uu_avl_pool_t   *nset_pool = fspset->fsps_named_set_avl_pool;
4285         uu_avl_pool_t   *who_pool = fspset->fsps_who_perm_avl_pool;
4286
4287         bzero(fsperm, sizeof (fs_perm_t));
4288
4289         if ((fsperm->fsp_sc_avl = uu_avl_create(nset_pool, NULL, UU_DEFAULT))
4290             == NULL)
4291                 nomem();
4292
4293         if ((fsperm->fsp_uge_avl = uu_avl_create(who_pool, NULL, UU_DEFAULT))
4294             == NULL)
4295                 nomem();
4296
4297         fsperm->fsp_set = fspset;
4298         fsperm->fsp_name = fsname;
4299 }
4300
4301 static inline void
4302 fs_perm_fini(fs_perm_t *fsperm)
4303 {
4304         who_perm_node_t *node = uu_avl_first(fsperm->fsp_sc_avl);
4305         while (node != NULL) {
4306                 who_perm_node_t *next_node = uu_avl_next(fsperm->fsp_sc_avl,
4307                     node);
4308                 who_perm_t *who_perm = &node->who_perm;
4309                 who_perm_fini(who_perm);
4310                 uu_avl_remove(fsperm->fsp_sc_avl, node);
4311                 free(node);
4312                 node = next_node;
4313         }
4314
4315         node = uu_avl_first(fsperm->fsp_uge_avl);
4316         while (node != NULL) {
4317                 who_perm_node_t *next_node = uu_avl_next(fsperm->fsp_uge_avl,
4318                     node);
4319                 who_perm_t *who_perm = &node->who_perm;
4320                 who_perm_fini(who_perm);
4321                 uu_avl_remove(fsperm->fsp_uge_avl, node);
4322                 free(node);
4323                 node = next_node;
4324         }
4325
4326         uu_avl_destroy(fsperm->fsp_sc_avl);
4327         uu_avl_destroy(fsperm->fsp_uge_avl);
4328 }
4329
4330 static void inline
4331 set_deleg_perm_node(uu_avl_t *avl, deleg_perm_node_t *node,
4332     zfs_deleg_who_type_t who_type, const char *name, char locality)
4333 {
4334         uu_avl_index_t idx = 0;
4335
4336         deleg_perm_node_t *found_node = NULL;
4337         deleg_perm_t    *deleg_perm = &node->dpn_perm;
4338
4339         deleg_perm_init(deleg_perm, who_type, name);
4340
4341         if ((found_node = uu_avl_find(avl, node, NULL, &idx))
4342             == NULL)
4343                 uu_avl_insert(avl, node, idx);
4344         else {
4345                 node = found_node;
4346                 deleg_perm = &node->dpn_perm;
4347         }
4348
4349
4350         switch (locality) {
4351         case ZFS_DELEG_LOCAL:
4352                 deleg_perm->dp_local = B_TRUE;
4353                 break;
4354         case ZFS_DELEG_DESCENDENT:
4355                 deleg_perm->dp_descend = B_TRUE;
4356                 break;
4357         case ZFS_DELEG_NA:
4358                 break;
4359         default:
4360                 assert(B_FALSE); /* invalid locality */
4361         }
4362 }
4363
4364 static inline int
4365 parse_who_perm(who_perm_t *who_perm, nvlist_t *nvl, char locality)
4366 {
4367         nvpair_t *nvp = NULL;
4368         fs_perm_set_t *fspset = who_perm->who_fsperm->fsp_set;
4369         uu_avl_t *avl = who_perm->who_deleg_perm_avl;
4370         zfs_deleg_who_type_t who_type = who_perm->who_type;
4371
4372         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4373                 const char *name = nvpair_name(nvp);
4374                 data_type_t type = nvpair_type(nvp);
4375                 uu_avl_pool_t *avl_pool = fspset->fsps_deleg_perm_avl_pool;
4376                 deleg_perm_node_t *node =
4377                     safe_malloc(sizeof (deleg_perm_node_t));
4378
4379                 VERIFY(type == DATA_TYPE_BOOLEAN);
4380
4381                 uu_avl_node_init(node, &node->dpn_avl_node, avl_pool);
4382                 set_deleg_perm_node(avl, node, who_type, name, locality);
4383         }
4384
4385         return (0);
4386 }
4387
4388 static inline int
4389 parse_fs_perm(fs_perm_t *fsperm, nvlist_t *nvl)
4390 {
4391         nvpair_t *nvp = NULL;
4392         fs_perm_set_t *fspset = fsperm->fsp_set;
4393
4394         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4395                 nvlist_t *nvl2 = NULL;
4396                 const char *name = nvpair_name(nvp);
4397                 uu_avl_t *avl = NULL;
4398                 uu_avl_pool_t *avl_pool = NULL;
4399                 zfs_deleg_who_type_t perm_type = name[0];
4400                 char perm_locality = name[1];
4401                 const char *perm_name = name + 3;
4402                 boolean_t is_set = B_TRUE;
4403                 who_perm_t *who_perm = NULL;
4404
4405                 assert('$' == name[2]);
4406
4407                 if (nvpair_value_nvlist(nvp, &nvl2) != 0)
4408                         return (-1);
4409
4410                 switch (perm_type) {
4411                 case ZFS_DELEG_CREATE:
4412                 case ZFS_DELEG_CREATE_SETS:
4413                 case ZFS_DELEG_NAMED_SET:
4414                 case ZFS_DELEG_NAMED_SET_SETS:
4415                         avl_pool = fspset->fsps_named_set_avl_pool;
4416                         avl = fsperm->fsp_sc_avl;
4417                         break;
4418                 case ZFS_DELEG_USER:
4419                 case ZFS_DELEG_USER_SETS:
4420                 case ZFS_DELEG_GROUP:
4421                 case ZFS_DELEG_GROUP_SETS:
4422                 case ZFS_DELEG_EVERYONE:
4423                 case ZFS_DELEG_EVERYONE_SETS:
4424                         avl_pool = fspset->fsps_who_perm_avl_pool;
4425                         avl = fsperm->fsp_uge_avl;
4426                         break;
4427                 default:
4428                         break;
4429                 }
4430
4431                 if (is_set) {
4432                         who_perm_node_t *found_node = NULL;
4433                         who_perm_node_t *node = safe_malloc(
4434                             sizeof (who_perm_node_t));
4435                         who_perm = &node->who_perm;
4436                         uu_avl_index_t idx = 0;
4437
4438                         uu_avl_node_init(node, &node->who_avl_node, avl_pool);
4439                         who_perm_init(who_perm, fsperm, perm_type, perm_name);
4440
4441                         if ((found_node = uu_avl_find(avl, node, NULL, &idx))
4442                             == NULL) {
4443                                 if (avl == fsperm->fsp_uge_avl) {
4444                                         uid_t rid = 0;
4445                                         struct passwd *p = NULL;
4446                                         struct group *g = NULL;
4447                                         const char *nice_name = NULL;
4448
4449                                         switch (perm_type) {
4450                                         case ZFS_DELEG_USER_SETS:
4451                                         case ZFS_DELEG_USER:
4452                                                 rid = atoi(perm_name);
4453                                                 p = getpwuid(rid);
4454                                                 if (p)
4455                                                         nice_name = p->pw_name;
4456                                                 break;
4457                                         case ZFS_DELEG_GROUP_SETS:
4458                                         case ZFS_DELEG_GROUP:
4459                                                 rid = atoi(perm_name);
4460                                                 g = getgrgid(rid);
4461                                                 if (g)
4462                                                         nice_name = g->gr_name;
4463                                                 break;
4464                                         default:
4465                                                 break;
4466                                         }
4467
4468                                         if (nice_name != NULL)
4469                                                 (void) strlcpy(
4470                                                     node->who_perm.who_ug_name,
4471                                                     nice_name, 256);
4472                                 }
4473
4474                                 uu_avl_insert(avl, node, idx);
4475                         } else {
4476                                 node = found_node;
4477                                 who_perm = &node->who_perm;
4478                         }
4479                 }
4480
4481                 (void) parse_who_perm(who_perm, nvl2, perm_locality);
4482         }
4483
4484         return (0);
4485 }
4486
4487 static inline int
4488 parse_fs_perm_set(fs_perm_set_t *fspset, nvlist_t *nvl)
4489 {
4490         nvpair_t *nvp = NULL;
4491         uu_avl_index_t idx = 0;
4492
4493         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4494                 nvlist_t *nvl2 = NULL;
4495                 const char *fsname = nvpair_name(nvp);
4496                 data_type_t type = nvpair_type(nvp);
4497                 fs_perm_t *fsperm = NULL;
4498                 fs_perm_node_t *node = safe_malloc(sizeof (fs_perm_node_t));
4499                 if (node == NULL)
4500                         nomem();
4501
4502                 fsperm = &node->fspn_fsperm;
4503
4504                 VERIFY(DATA_TYPE_NVLIST == type);
4505
4506                 uu_list_node_init(node, &node->fspn_list_node,
4507                     fspset->fsps_list_pool);
4508
4509                 idx = uu_list_numnodes(fspset->fsps_list);
4510                 fs_perm_init(fsperm, fspset, fsname);
4511
4512                 if (nvpair_value_nvlist(nvp, &nvl2) != 0)
4513                         return (-1);
4514
4515                 (void) parse_fs_perm(fsperm, nvl2);
4516
4517                 uu_list_insert(fspset->fsps_list, node, idx);
4518         }
4519
4520         return (0);
4521 }
4522
4523 static inline const char *
4524 deleg_perm_comment(zfs_deleg_note_t note)
4525 {
4526         const char *str = "";
4527
4528         /* subcommands */
4529         switch (note) {
4530                 /* SUBCOMMANDS */
4531         case ZFS_DELEG_NOTE_ALLOW:
4532                 str = gettext("Must also have the permission that is being"
4533                     "\n\t\t\t\tallowed");
4534                 break;
4535         case ZFS_DELEG_NOTE_CLONE:
4536                 str = gettext("Must also have the 'create' ability and 'mount'"
4537                     "\n\t\t\t\tability in the origin file system");
4538                 break;
4539         case ZFS_DELEG_NOTE_CREATE:
4540                 str = gettext("Must also have the 'mount' ability");
4541                 break;
4542         case ZFS_DELEG_NOTE_DESTROY:
4543                 str = gettext("Must also have the 'mount' ability");
4544                 break;
4545         case ZFS_DELEG_NOTE_DIFF:
4546                 str = gettext("Allows lookup of paths within a dataset;"
4547                     "\n\t\t\t\tgiven an object number. Ordinary users need this"
4548                     "\n\t\t\t\tin order to use zfs diff");
4549                 break;
4550         case ZFS_DELEG_NOTE_HOLD:
4551                 str = gettext("Allows adding a user hold to a snapshot");
4552                 break;
4553         case ZFS_DELEG_NOTE_MOUNT:
4554                 str = gettext("Allows mount/umount of ZFS datasets");
4555                 break;
4556         case ZFS_DELEG_NOTE_PROMOTE:
4557                 str = gettext("Must also have the 'mount'\n\t\t\t\tand"
4558                     " 'promote' ability in the origin file system");
4559                 break;
4560         case ZFS_DELEG_NOTE_RECEIVE:
4561                 str = gettext("Must also have the 'mount' and 'create'"
4562                     " ability");
4563                 break;
4564         case ZFS_DELEG_NOTE_RELEASE:
4565                 str = gettext("Allows releasing a user hold which\n\t\t\t\t"
4566                     "might destroy the snapshot");
4567                 break;
4568         case ZFS_DELEG_NOTE_RENAME:
4569                 str = gettext("Must also have the 'mount' and 'create'"
4570                     "\n\t\t\t\tability in the new parent");
4571                 break;
4572         case ZFS_DELEG_NOTE_ROLLBACK:
4573                 str = gettext("");
4574                 break;
4575         case ZFS_DELEG_NOTE_SEND:
4576                 str = gettext("");
4577                 break;
4578         case ZFS_DELEG_NOTE_SHARE:
4579                 str = gettext("Allows sharing file systems over NFS or SMB"
4580                     "\n\t\t\t\tprotocols");
4581                 break;
4582         case ZFS_DELEG_NOTE_SNAPSHOT:
4583                 str = gettext("");
4584                 break;
4585 /*
4586  *      case ZFS_DELEG_NOTE_VSCAN:
4587  *              str = gettext("");
4588  *              break;
4589  */
4590                 /* OTHER */
4591         case ZFS_DELEG_NOTE_GROUPQUOTA:
4592                 str = gettext("Allows accessing any groupquota@... property");
4593                 break;
4594         case ZFS_DELEG_NOTE_GROUPUSED:
4595                 str = gettext("Allows reading any groupused@... property");
4596                 break;
4597         case ZFS_DELEG_NOTE_USERPROP:
4598                 str = gettext("Allows changing any user property");
4599                 break;
4600         case ZFS_DELEG_NOTE_USERQUOTA:
4601                 str = gettext("Allows accessing any userquota@... property");
4602                 break;
4603         case ZFS_DELEG_NOTE_USERUSED:
4604                 str = gettext("Allows reading any userused@... property");
4605                 break;
4606                 /* other */
4607         default:
4608                 str = "";
4609         }
4610
4611         return (str);
4612 }
4613
4614 struct allow_opts {
4615         boolean_t local;
4616         boolean_t descend;
4617         boolean_t user;
4618         boolean_t group;
4619         boolean_t everyone;
4620         boolean_t create;
4621         boolean_t set;
4622         boolean_t recursive; /* unallow only */
4623         boolean_t prt_usage;
4624
4625         boolean_t prt_perms;
4626         char *who;
4627         char *perms;
4628         const char *dataset;
4629 };
4630
4631 static inline int
4632 prop_cmp(const void *a, const void *b)
4633 {
4634         const char *str1 = *(const char **)a;
4635         const char *str2 = *(const char **)b;
4636         return (strcmp(str1, str2));
4637 }
4638
4639 static void
4640 allow_usage(boolean_t un, boolean_t requested, const char *msg)
4641 {
4642         const char *opt_desc[] = {
4643                 "-h", gettext("show this help message and exit"),
4644                 "-l", gettext("set permission locally"),
4645                 "-d", gettext("set permission for descents"),
4646                 "-u", gettext("set permission for user"),
4647                 "-g", gettext("set permission for group"),
4648                 "-e", gettext("set permission for everyone"),
4649                 "-c", gettext("set create time permission"),
4650                 "-s", gettext("define permission set"),
4651                 /* unallow only */
4652                 "-r", gettext("remove permissions recursively"),
4653         };
4654         size_t unallow_size = sizeof (opt_desc) / sizeof (char *);
4655         size_t allow_size = unallow_size - 2;
4656         const char *props[ZFS_NUM_PROPS];
4657         int i;
4658         size_t count = 0;
4659         FILE *fp = requested ? stdout : stderr;
4660         zprop_desc_t *pdtbl = zfs_prop_get_table();
4661         const char *fmt = gettext("%-16s %-14s\t%s\n");
4662
4663         (void) fprintf(fp, gettext("Usage: %s\n"), get_usage(un ? HELP_UNALLOW :
4664             HELP_ALLOW));
4665         (void) fprintf(fp, gettext("Options:\n"));
4666         for (i = 0; i < (un ? unallow_size : allow_size); i++) {
4667                 const char *opt = opt_desc[i++];
4668                 const char *optdsc = opt_desc[i];
4669                 (void) fprintf(fp, gettext("  %-10s  %s\n"), opt, optdsc);
4670         }
4671
4672         (void) fprintf(fp, gettext("\nThe following permissions are "
4673             "supported:\n\n"));
4674         (void) fprintf(fp, fmt, gettext("NAME"), gettext("TYPE"),
4675             gettext("NOTES"));
4676         for (i = 0; i < ZFS_NUM_DELEG_NOTES; i++) {
4677                 const char *perm_name = zfs_deleg_perm_tbl[i].z_perm;
4678                 zfs_deleg_note_t perm_note = zfs_deleg_perm_tbl[i].z_note;
4679                 const char *perm_type = deleg_perm_type(perm_note);
4680                 const char *perm_comment = deleg_perm_comment(perm_note);
4681                 (void) fprintf(fp, fmt, perm_name, perm_type, perm_comment);
4682         }
4683
4684         for (i = 0; i < ZFS_NUM_PROPS; i++) {
4685                 zprop_desc_t *pd = &pdtbl[i];
4686                 if (pd->pd_visible != B_TRUE)
4687                         continue;
4688
4689                 if (pd->pd_attr == PROP_READONLY)
4690                         continue;
4691
4692                 props[count++] = pd->pd_name;
4693         }
4694         props[count] = NULL;
4695
4696         qsort(props, count, sizeof (char *), prop_cmp);
4697
4698         for (i = 0; i < count; i++)
4699                 (void) fprintf(fp, fmt, props[i], gettext("property"), "");
4700
4701         if (msg != NULL)
4702                 (void) fprintf(fp, gettext("\nzfs: error: %s"), msg);
4703
4704         exit(requested ? 0 : 2);
4705 }
4706
4707 static inline const char *
4708 munge_args(int argc, char **argv, boolean_t un, size_t expected_argc,
4709     char **permsp)
4710 {
4711         if (un && argc == expected_argc - 1)
4712                 *permsp = NULL;
4713         else if (argc == expected_argc)
4714                 *permsp = argv[argc - 2];
4715         else
4716                 allow_usage(un, B_FALSE,
4717                     gettext("wrong number of parameters\n"));
4718
4719         return (argv[argc - 1]);
4720 }
4721
4722 static void
4723 parse_allow_args(int argc, char **argv, boolean_t un, struct allow_opts *opts)
4724 {
4725         int uge_sum = opts->user + opts->group + opts->everyone;
4726         int csuge_sum = opts->create + opts->set + uge_sum;
4727         int ldcsuge_sum = csuge_sum + opts->local + opts->descend;
4728         int all_sum = un ? ldcsuge_sum + opts->recursive : ldcsuge_sum;
4729
4730         if (uge_sum > 1)
4731                 allow_usage(un, B_FALSE,
4732                     gettext("-u, -g, and -e are mutually exclusive\n"));
4733
4734         if (opts->prt_usage) {
4735                 if (argc == 0 && all_sum == 0)
4736                         allow_usage(un, B_TRUE, NULL);
4737                 else
4738                         usage(B_FALSE);
4739         }
4740
4741         if (opts->set) {
4742                 if (csuge_sum > 1)
4743                         allow_usage(un, B_FALSE,
4744                             gettext("invalid options combined with -s\n"));
4745
4746                 opts->dataset = munge_args(argc, argv, un, 3, &opts->perms);
4747                 if (argv[0][0] != '@')
4748                         allow_usage(un, B_FALSE,
4749                             gettext("invalid set name: missing '@' prefix\n"));
4750                 opts->who = argv[0];
4751         } else if (opts->create) {
4752                 if (ldcsuge_sum > 1)
4753                         allow_usage(un, B_FALSE,
4754                             gettext("invalid options combined with -c\n"));
4755                 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
4756         } else if (opts->everyone) {
4757                 if (csuge_sum > 1)
4758                         allow_usage(un, B_FALSE,
4759                             gettext("invalid options combined with -e\n"));
4760                 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
4761         } else if (uge_sum == 0 && argc > 0 && strcmp(argv[0], "everyone")
4762             == 0) {
4763                 opts->everyone = B_TRUE;
4764                 argc--;
4765                 argv++;
4766                 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
4767         } else if (argc == 1 && !un) {
4768                 opts->prt_perms = B_TRUE;
4769                 opts->dataset = argv[argc-1];
4770         } else {
4771                 opts->dataset = munge_args(argc, argv, un, 3, &opts->perms);
4772                 opts->who = argv[0];
4773         }
4774
4775         if (!opts->local && !opts->descend) {
4776                 opts->local = B_TRUE;
4777                 opts->descend = B_TRUE;
4778         }
4779 }
4780
4781 static void
4782 store_allow_perm(zfs_deleg_who_type_t type, boolean_t local, boolean_t descend,
4783     const char *who, char *perms, nvlist_t *top_nvl)
4784 {
4785         int i;
4786         char ld[2] = { '\0', '\0' };
4787         char who_buf[ZFS_MAXNAMELEN+32];
4788         char base_type = ZFS_DELEG_WHO_UNKNOWN;
4789         char set_type = ZFS_DELEG_WHO_UNKNOWN;
4790         nvlist_t *base_nvl = NULL;
4791         nvlist_t *set_nvl = NULL;
4792         nvlist_t *nvl;
4793
4794         if (nvlist_alloc(&base_nvl, NV_UNIQUE_NAME, 0) != 0)
4795                 nomem();
4796         if (nvlist_alloc(&set_nvl, NV_UNIQUE_NAME, 0) !=  0)
4797                 nomem();
4798
4799         switch (type) {
4800         case ZFS_DELEG_NAMED_SET_SETS:
4801         case ZFS_DELEG_NAMED_SET:
4802                 set_type = ZFS_DELEG_NAMED_SET_SETS;
4803                 base_type = ZFS_DELEG_NAMED_SET;
4804                 ld[0] = ZFS_DELEG_NA;
4805                 break;
4806         case ZFS_DELEG_CREATE_SETS:
4807         case ZFS_DELEG_CREATE:
4808                 set_type = ZFS_DELEG_CREATE_SETS;
4809                 base_type = ZFS_DELEG_CREATE;
4810                 ld[0] = ZFS_DELEG_NA;
4811                 break;
4812         case ZFS_DELEG_USER_SETS:
4813         case ZFS_DELEG_USER:
4814                 set_type = ZFS_DELEG_USER_SETS;
4815                 base_type = ZFS_DELEG_USER;
4816                 if (local)
4817                         ld[0] = ZFS_DELEG_LOCAL;
4818                 if (descend)
4819                         ld[1] = ZFS_DELEG_DESCENDENT;
4820                 break;
4821         case ZFS_DELEG_GROUP_SETS:
4822         case ZFS_DELEG_GROUP:
4823                 set_type = ZFS_DELEG_GROUP_SETS;
4824                 base_type = ZFS_DELEG_GROUP;
4825                 if (local)
4826                         ld[0] = ZFS_DELEG_LOCAL;
4827                 if (descend)
4828                         ld[1] = ZFS_DELEG_DESCENDENT;
4829                 break;
4830         case ZFS_DELEG_EVERYONE_SETS:
4831         case ZFS_DELEG_EVERYONE:
4832                 set_type = ZFS_DELEG_EVERYONE_SETS;
4833                 base_type = ZFS_DELEG_EVERYONE;
4834                 if (local)
4835                         ld[0] = ZFS_DELEG_LOCAL;
4836                 if (descend)
4837                         ld[1] = ZFS_DELEG_DESCENDENT;
4838         default:
4839                 break;
4840         }
4841
4842         if (perms != NULL) {
4843                 char *curr = perms;
4844                 char *end = curr + strlen(perms);
4845
4846                 while (curr < end) {
4847                         char *delim = strchr(curr, ',');
4848                         if (delim == NULL)
4849                                 delim = end;
4850                         else
4851                                 *delim = '\0';
4852
4853                         if (curr[0] == '@')
4854                                 nvl = set_nvl;
4855                         else
4856                                 nvl = base_nvl;
4857
4858                         (void) nvlist_add_boolean(nvl, curr);
4859                         if (delim != end)
4860                                 *delim = ',';
4861                         curr = delim + 1;
4862                 }
4863
4864                 for (i = 0; i < 2; i++) {
4865                         char locality = ld[i];
4866                         if (locality == 0)
4867                                 continue;
4868
4869                         if (!nvlist_empty(base_nvl)) {
4870                                 if (who != NULL)
4871                                         (void) snprintf(who_buf,
4872                                             sizeof (who_buf), "%c%c$%s",
4873                                             base_type, locality, who);
4874                                 else
4875                                         (void) snprintf(who_buf,
4876                                             sizeof (who_buf), "%c%c$",
4877                                             base_type, locality);
4878
4879                                 (void) nvlist_add_nvlist(top_nvl, who_buf,
4880                                     base_nvl);
4881                         }
4882
4883
4884                         if (!nvlist_empty(set_nvl)) {
4885                                 if (who != NULL)
4886                                         (void) snprintf(who_buf,
4887                                             sizeof (who_buf), "%c%c$%s",
4888                                             set_type, locality, who);
4889                                 else
4890                                         (void) snprintf(who_buf,
4891                                             sizeof (who_buf), "%c%c$",
4892                                             set_type, locality);
4893
4894                                 (void) nvlist_add_nvlist(top_nvl, who_buf,
4895                                     set_nvl);
4896                         }
4897                 }
4898         } else {
4899                 for (i = 0; i < 2; i++) {
4900                         char locality = ld[i];
4901                         if (locality == 0)
4902                                 continue;
4903
4904                         if (who != NULL)
4905                                 (void) snprintf(who_buf, sizeof (who_buf),
4906                                     "%c%c$%s", base_type, locality, who);
4907                         else
4908                                 (void) snprintf(who_buf, sizeof (who_buf),
4909                                     "%c%c$", base_type, locality);
4910                         (void) nvlist_add_boolean(top_nvl, who_buf);
4911
4912                         if (who != NULL)
4913                                 (void) snprintf(who_buf, sizeof (who_buf),
4914                                     "%c%c$%s", set_type, locality, who);
4915                         else
4916                                 (void) snprintf(who_buf, sizeof (who_buf),
4917                                     "%c%c$", set_type, locality);
4918                         (void) nvlist_add_boolean(top_nvl, who_buf);
4919                 }
4920         }
4921 }
4922
4923 static int
4924 construct_fsacl_list(boolean_t un, struct allow_opts *opts, nvlist_t **nvlp)
4925 {
4926         if (nvlist_alloc(nvlp, NV_UNIQUE_NAME, 0) != 0)
4927                 nomem();
4928
4929         if (opts->set) {
4930                 store_allow_perm(ZFS_DELEG_NAMED_SET, opts->local,
4931                     opts->descend, opts->who, opts->perms, *nvlp);
4932         } else if (opts->create) {
4933                 store_allow_perm(ZFS_DELEG_CREATE, opts->local,
4934                     opts->descend, NULL, opts->perms, *nvlp);
4935         } else if (opts->everyone) {
4936                 store_allow_perm(ZFS_DELEG_EVERYONE, opts->local,
4937                     opts->descend, NULL, opts->perms, *nvlp);
4938         } else {
4939                 char *curr = opts->who;
4940                 char *end = curr + strlen(curr);
4941
4942                 while (curr < end) {
4943                         const char *who;
4944                         zfs_deleg_who_type_t who_type = ZFS_DELEG_WHO_UNKNOWN;
4945                         char *endch;
4946                         char *delim = strchr(curr, ',');
4947                         char errbuf[256];
4948                         char id[64];
4949                         struct passwd *p = NULL;
4950                         struct group *g = NULL;
4951
4952                         uid_t rid;
4953                         if (delim == NULL)
4954                                 delim = end;
4955                         else
4956                                 *delim = '\0';
4957
4958                         rid = (uid_t)strtol(curr, &endch, 0);
4959                         if (opts->user) {
4960                                 who_type = ZFS_DELEG_USER;
4961                                 if (*endch != '\0')
4962                                         p = getpwnam(curr);
4963                                 else
4964                                         p = getpwuid(rid);
4965
4966                                 if (p != NULL)
4967                                         rid = p->pw_uid;
4968                                 else {
4969                                         (void) snprintf(errbuf, 256, gettext(
4970                                             "invalid user %s"), curr);
4971                                         allow_usage(un, B_TRUE, errbuf);
4972                                 }
4973                         } else if (opts->group) {
4974                                 who_type = ZFS_DELEG_GROUP;
4975                                 if (*endch != '\0')
4976                                         g = getgrnam(curr);
4977                                 else
4978                                         g = getgrgid(rid);
4979
4980                                 if (g != NULL)
4981                                         rid = g->gr_gid;
4982                                 else {
4983                                         (void) snprintf(errbuf, 256, gettext(
4984                                             "invalid group %s"),  curr);
4985                                         allow_usage(un, B_TRUE, errbuf);
4986                                 }
4987                         } else {
4988                                 if (*endch != '\0') {
4989                                         p = getpwnam(curr);
4990                                 } else {
4991                                         p = getpwuid(rid);
4992                                 }
4993
4994                                 if (p == NULL) {
4995                                         if (*endch != '\0') {
4996                                                 g = getgrnam(curr);
4997                                         } else {
4998                                                 g = getgrgid(rid);
4999                                         }
5000                                 }
5001
5002                                 if (p != NULL) {
5003                                         who_type = ZFS_DELEG_USER;
5004                                         rid = p->pw_uid;
5005                                 } else if (g != NULL) {
5006                                         who_type = ZFS_DELEG_GROUP;
5007                                         rid = g->gr_gid;
5008                                 } else {
5009                                         (void) snprintf(errbuf, 256, gettext(
5010                                             "invalid user/group %s"), curr);
5011                                         allow_usage(un, B_TRUE, errbuf);
5012                                 }
5013                         }
5014
5015                         (void) sprintf(id, "%u", rid);
5016                         who = id;
5017
5018                         store_allow_perm(who_type, opts->local,
5019                             opts->descend, who, opts->perms, *nvlp);
5020                         curr = delim + 1;
5021                 }
5022         }
5023
5024         return (0);
5025 }
5026
5027 static void
5028 print_set_creat_perms(uu_avl_t *who_avl)
5029 {
5030         const char *sc_title[] = {
5031                 gettext("Permission sets:\n"),
5032                 gettext("Create time permissions:\n"),
5033                 NULL
5034         };
5035         const char **title_ptr = sc_title;
5036         who_perm_node_t *who_node = NULL;
5037         int prev_weight = -1;
5038
5039         for (who_node = uu_avl_first(who_avl); who_node != NULL;
5040             who_node = uu_avl_next(who_avl, who_node)) {
5041                 uu_avl_t *avl = who_node->who_perm.who_deleg_perm_avl;
5042                 zfs_deleg_who_type_t who_type = who_node->who_perm.who_type;
5043                 const char *who_name = who_node->who_perm.who_name;
5044                 int weight = who_type2weight(who_type);
5045                 boolean_t first = B_TRUE;
5046                 deleg_perm_node_t *deleg_node;
5047
5048                 if (prev_weight != weight) {
5049                         (void) printf("%s", *title_ptr++);
5050                         prev_weight = weight;
5051                 }
5052
5053                 if (who_name == NULL || strnlen(who_name, 1) == 0)
5054                         (void) printf("\t");
5055                 else
5056                         (void) printf("\t%s ", who_name);
5057
5058                 for (deleg_node = uu_avl_first(avl); deleg_node != NULL;
5059                     deleg_node = uu_avl_next(avl, deleg_node)) {
5060                         if (first) {
5061                                 (void) printf("%s",
5062                                     deleg_node->dpn_perm.dp_name);
5063                                 first = B_FALSE;
5064                         } else
5065                                 (void) printf(",%s",
5066                                     deleg_node->dpn_perm.dp_name);
5067                 }
5068
5069                 (void) printf("\n");
5070         }
5071 }
5072
5073 static void inline
5074 print_uge_deleg_perms(uu_avl_t *who_avl, boolean_t local, boolean_t descend,
5075     const char *title)
5076 {
5077         who_perm_node_t *who_node = NULL;
5078         boolean_t prt_title = B_TRUE;
5079         uu_avl_walk_t *walk;
5080
5081         if ((walk = uu_avl_walk_start(who_avl, UU_WALK_ROBUST)) == NULL)
5082                 nomem();
5083
5084         while ((who_node = uu_avl_walk_next(walk)) != NULL) {
5085                 const char *who_name = who_node->who_perm.who_name;
5086                 const char *nice_who_name = who_node->who_perm.who_ug_name;
5087                 uu_avl_t *avl = who_node->who_perm.who_deleg_perm_avl;
5088                 zfs_deleg_who_type_t who_type = who_node->who_perm.who_type;
5089                 char delim = ' ';
5090                 deleg_perm_node_t *deleg_node;
5091                 boolean_t prt_who = B_TRUE;
5092
5093                 for (deleg_node = uu_avl_first(avl);
5094                     deleg_node != NULL;
5095                     deleg_node = uu_avl_next(avl, deleg_node)) {
5096                         if (local != deleg_node->dpn_perm.dp_local ||
5097                             descend != deleg_node->dpn_perm.dp_descend)
5098                                 continue;
5099
5100                         if (prt_who) {
5101                                 const char *who = NULL;
5102                                 if (prt_title) {
5103                                         prt_title = B_FALSE;
5104                                         (void) printf("%s", title);
5105                                 }
5106
5107                                 switch (who_type) {
5108                                 case ZFS_DELEG_USER_SETS:
5109                                 case ZFS_DELEG_USER:
5110                                         who = gettext("user");
5111                                         if (nice_who_name)
5112                                                 who_name  = nice_who_name;
5113                                         break;
5114                                 case ZFS_DELEG_GROUP_SETS:
5115                                 case ZFS_DELEG_GROUP:
5116                                         who = gettext("group");
5117                                         if (nice_who_name)
5118                                                 who_name  = nice_who_name;
5119                                         break;
5120                                 case ZFS_DELEG_EVERYONE_SETS:
5121                                 case ZFS_DELEG_EVERYONE:
5122                                         who = gettext("everyone");
5123                                         who_name = NULL;
5124                                 default:
5125                                         break;
5126                                 }
5127
5128                                 prt_who = B_FALSE;
5129                                 if (who_name == NULL)
5130                                         (void) printf("\t%s", who);
5131                                 else
5132                                         (void) printf("\t%s %s", who, who_name);
5133                         }
5134
5135                         (void) printf("%c%s", delim,
5136                             deleg_node->dpn_perm.dp_name);
5137                         delim = ',';
5138                 }
5139
5140                 if (!prt_who)
5141                         (void) printf("\n");
5142         }
5143
5144         uu_avl_walk_end(walk);
5145 }
5146
5147 static void
5148 print_fs_perms(fs_perm_set_t *fspset)
5149 {
5150         fs_perm_node_t *node = NULL;
5151         char buf[ZFS_MAXNAMELEN+32];
5152         const char *dsname = buf;
5153
5154         for (node = uu_list_first(fspset->fsps_list); node != NULL;
5155             node = uu_list_next(fspset->fsps_list, node)) {
5156                 uu_avl_t *sc_avl = node->fspn_fsperm.fsp_sc_avl;
5157                 uu_avl_t *uge_avl = node->fspn_fsperm.fsp_uge_avl;
5158                 int left = 0;
5159
5160                 (void) snprintf(buf, ZFS_MAXNAMELEN+32,
5161                     gettext("---- Permissions on %s "),
5162                     node->fspn_fsperm.fsp_name);
5163                 (void) printf("%s", dsname);
5164                 left = 70 - strlen(buf);
5165                 while (left-- > 0)
5166                         (void) printf("-");
5167                 (void) printf("\n");
5168
5169                 print_set_creat_perms(sc_avl);
5170                 print_uge_deleg_perms(uge_avl, B_TRUE, B_FALSE,
5171                     gettext("Local permissions:\n"));
5172                 print_uge_deleg_perms(uge_avl, B_FALSE, B_TRUE,
5173                     gettext("Descendent permissions:\n"));
5174                 print_uge_deleg_perms(uge_avl, B_TRUE, B_TRUE,
5175                     gettext("Local+Descendent permissions:\n"));
5176         }
5177 }
5178
5179 static fs_perm_set_t fs_perm_set = { NULL, NULL, NULL, NULL };
5180
5181 struct deleg_perms {
5182         boolean_t un;
5183         nvlist_t *nvl;
5184 };
5185
5186 static int
5187 set_deleg_perms(zfs_handle_t *zhp, void *data)
5188 {
5189         struct deleg_perms *perms = (struct deleg_perms *)data;
5190         zfs_type_t zfs_type = zfs_get_type(zhp);
5191
5192         if (zfs_type != ZFS_TYPE_FILESYSTEM && zfs_type != ZFS_TYPE_VOLUME)
5193                 return (0);
5194
5195         return (zfs_set_fsacl(zhp, perms->un, perms->nvl));
5196 }
5197
5198 static int
5199 zfs_do_allow_unallow_impl(int argc, char **argv, boolean_t un)
5200 {
5201         zfs_handle_t *zhp;
5202         nvlist_t *perm_nvl = NULL;
5203         nvlist_t *update_perm_nvl = NULL;
5204         int error = 1;
5205         int c;
5206         struct allow_opts opts = { 0 };
5207
5208         const char *optstr = un ? "ldugecsrh" : "ldugecsh";
5209
5210         /* check opts */
5211         while ((c = getopt(argc, argv, optstr)) != -1) {
5212                 switch (c) {
5213                 case 'l':
5214                         opts.local = B_TRUE;
5215                         break;
5216                 case 'd':
5217                         opts.descend = B_TRUE;
5218                         break;
5219                 case 'u':
5220                         opts.user = B_TRUE;
5221                         break;
5222                 case 'g':
5223                         opts.group = B_TRUE;
5224                         break;
5225                 case 'e':
5226                         opts.everyone = B_TRUE;
5227                         break;
5228                 case 's':
5229                         opts.set = B_TRUE;
5230                         break;
5231                 case 'c':
5232                         opts.create = B_TRUE;
5233                         break;
5234                 case 'r':
5235                         opts.recursive = B_TRUE;
5236                         break;
5237                 case ':':
5238                         (void) fprintf(stderr, gettext("missing argument for "
5239                             "'%c' option\n"), optopt);
5240                         usage(B_FALSE);
5241                         break;
5242                 case 'h':
5243                         opts.prt_usage = B_TRUE;
5244                         break;
5245                 case '?':
5246                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5247                             optopt);
5248                         usage(B_FALSE);
5249                 }
5250         }
5251
5252         argc -= optind;
5253         argv += optind;
5254
5255         /* check arguments */
5256         parse_allow_args(argc, argv, un, &opts);
5257
5258         /* try to open the dataset */
5259         if ((zhp = zfs_open(g_zfs, opts.dataset, ZFS_TYPE_FILESYSTEM |
5260             ZFS_TYPE_VOLUME)) == NULL) {
5261                 (void) fprintf(stderr, "Failed to open dataset: %s\n",
5262                     opts.dataset);
5263                 return (-1);
5264         }
5265
5266         if (zfs_get_fsacl(zhp, &perm_nvl) != 0)
5267                 goto cleanup2;
5268
5269         fs_perm_set_init(&fs_perm_set);
5270         if (parse_fs_perm_set(&fs_perm_set, perm_nvl) != 0) {
5271                 (void) fprintf(stderr, "Failed to parse fsacl permissions\n");
5272                 goto cleanup1;
5273         }
5274
5275         if (opts.prt_perms)
5276                 print_fs_perms(&fs_perm_set);
5277         else {
5278                 (void) construct_fsacl_list(un, &opts, &update_perm_nvl);
5279                 if (zfs_set_fsacl(zhp, un, update_perm_nvl) != 0)
5280                         goto cleanup0;
5281
5282                 if (un && opts.recursive) {
5283                         struct deleg_perms data = { un, update_perm_nvl };
5284                         if (zfs_iter_filesystems(zhp, set_deleg_perms,
5285                             &data) != 0)
5286                                 goto cleanup0;
5287                 }
5288         }
5289
5290         error = 0;
5291
5292 cleanup0:
5293         nvlist_free(perm_nvl);
5294         if (update_perm_nvl != NULL)
5295                 nvlist_free(update_perm_nvl);
5296 cleanup1:
5297         fs_perm_set_fini(&fs_perm_set);
5298 cleanup2:
5299         zfs_close(zhp);
5300
5301         return (error);
5302 }
5303
5304 static int
5305 zfs_do_allow(int argc, char **argv)
5306 {
5307         return (zfs_do_allow_unallow_impl(argc, argv, B_FALSE));
5308 }
5309
5310 static int
5311 zfs_do_unallow(int argc, char **argv)
5312 {
5313         return (zfs_do_allow_unallow_impl(argc, argv, B_TRUE));
5314 }
5315
5316 static int
5317 zfs_do_hold_rele_impl(int argc, char **argv, boolean_t holding)
5318 {
5319         int errors = 0;
5320         int i;
5321         const char *tag;
5322         boolean_t recursive = B_FALSE;
5323         const char *opts = holding ? "rt" : "r";
5324         int c;
5325
5326         /* check options */
5327         while ((c = getopt(argc, argv, opts)) != -1) {
5328                 switch (c) {
5329                 case 'r':
5330                         recursive = B_TRUE;
5331                         break;
5332                 case '?':
5333                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5334                             optopt);
5335                         usage(B_FALSE);
5336                 }
5337         }
5338
5339         argc -= optind;
5340         argv += optind;
5341
5342         /* check number of arguments */
5343         if (argc < 2)
5344                 usage(B_FALSE);
5345
5346         tag = argv[0];
5347         --argc;
5348         ++argv;
5349
5350         if (holding && tag[0] == '.') {
5351                 /* tags starting with '.' are reserved for libzfs */
5352                 (void) fprintf(stderr, gettext("tag may not start with '.'\n"));
5353                 usage(B_FALSE);
5354         }
5355
5356         for (i = 0; i < argc; ++i) {
5357                 zfs_handle_t *zhp;
5358                 char parent[ZFS_MAXNAMELEN];
5359                 const char *delim;
5360                 char *path = argv[i];
5361
5362                 delim = strchr(path, '@');
5363                 if (delim == NULL) {
5364                         (void) fprintf(stderr,
5365                             gettext("'%s' is not a snapshot\n"), path);
5366                         ++errors;
5367                         continue;
5368                 }
5369                 (void) strncpy(parent, path, delim - path);
5370                 parent[delim - path] = '\0';
5371
5372                 zhp = zfs_open(g_zfs, parent,
5373                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
5374                 if (zhp == NULL) {
5375                         ++errors;
5376                         continue;
5377                 }
5378                 if (holding) {
5379                         if (zfs_hold(zhp, delim+1, tag, recursive, -1) != 0)
5380                                 ++errors;
5381                 } else {
5382                         if (zfs_release(zhp, delim+1, tag, recursive) != 0)
5383                                 ++errors;
5384                 }
5385                 zfs_close(zhp);
5386         }
5387
5388         return (errors != 0);
5389 }
5390
5391 /*
5392  * zfs hold [-r] [-t] <tag> <snap> ...
5393  *
5394  *      -r      Recursively hold
5395  *
5396  * Apply a user-hold with the given tag to the list of snapshots.
5397  */
5398 static int
5399 zfs_do_hold(int argc, char **argv)
5400 {
5401         return (zfs_do_hold_rele_impl(argc, argv, B_TRUE));
5402 }
5403
5404 /*
5405  * zfs release [-r] <tag> <snap> ...
5406  *
5407  *      -r      Recursively release
5408  *
5409  * Release a user-hold with the given tag from the list of snapshots.
5410  */
5411 static int
5412 zfs_do_release(int argc, char **argv)
5413 {
5414         return (zfs_do_hold_rele_impl(argc, argv, B_FALSE));
5415 }
5416
5417 typedef struct holds_cbdata {
5418         boolean_t       cb_recursive;
5419         const char      *cb_snapname;
5420         nvlist_t        **cb_nvlp;
5421         size_t          cb_max_namelen;
5422         size_t          cb_max_taglen;
5423 } holds_cbdata_t;
5424
5425 #define STRFTIME_FMT_STR "%a %b %e %k:%M %Y"
5426 #define DATETIME_BUF_LEN (32)
5427 /*
5428  *
5429  */
5430 static void
5431 print_holds(boolean_t scripted, int nwidth, int tagwidth, nvlist_t *nvl)
5432 {
5433         int i;
5434         nvpair_t *nvp = NULL;
5435         char *hdr_cols[] = { "NAME", "TAG", "TIMESTAMP" };
5436         const char *col;
5437
5438         if (!scripted) {
5439                 for (i = 0; i < 3; i++) {
5440                         col = gettext(hdr_cols[i]);
5441                         if (i < 2)
5442                                 (void) printf("%-*s  ", i ? tagwidth : nwidth,
5443                                     col);
5444                         else
5445                                 (void) printf("%s\n", col);
5446                 }
5447         }
5448
5449         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
5450                 char *zname = nvpair_name(nvp);
5451                 nvlist_t *nvl2;
5452                 nvpair_t *nvp2 = NULL;
5453                 (void) nvpair_value_nvlist(nvp, &nvl2);
5454                 while ((nvp2 = nvlist_next_nvpair(nvl2, nvp2)) != NULL) {
5455                         char tsbuf[DATETIME_BUF_LEN];
5456                         char *tagname = nvpair_name(nvp2);
5457                         uint64_t val = 0;
5458                         time_t time;
5459                         struct tm t;
5460                         char sep = scripted ? '\t' : ' ';
5461                         int sepnum = scripted ? 1 : 2;
5462
5463                         (void) nvpair_value_uint64(nvp2, &val);
5464                         time = (time_t)val;
5465                         (void) localtime_r(&time, &t);
5466                         (void) strftime(tsbuf, DATETIME_BUF_LEN,
5467                             gettext(STRFTIME_FMT_STR), &t);
5468
5469                         (void) printf("%-*s%*c%-*s%*c%s\n", nwidth, zname,
5470                             sepnum, sep, tagwidth, tagname, sepnum, sep, tsbuf);
5471                 }
5472         }
5473 }
5474
5475 /*
5476  * Generic callback function to list a dataset or snapshot.
5477  */
5478 static int
5479 holds_callback(zfs_handle_t *zhp, void *data)
5480 {
5481         holds_cbdata_t *cbp = data;
5482         nvlist_t *top_nvl = *cbp->cb_nvlp;
5483         nvlist_t *nvl = NULL;
5484         nvpair_t *nvp = NULL;
5485         const char *zname = zfs_get_name(zhp);
5486         size_t znamelen = strnlen(zname, ZFS_MAXNAMELEN);
5487
5488         if (cbp->cb_recursive) {
5489                 const char *snapname;
5490                 char *delim  = strchr(zname, '@');
5491                 if (delim == NULL)
5492                         return (0);
5493
5494                 snapname = delim + 1;
5495                 if (strcmp(cbp->cb_snapname, snapname))
5496                         return (0);
5497         }
5498
5499         if (zfs_get_holds(zhp, &nvl) != 0)
5500                 return (-1);
5501
5502         if (znamelen > cbp->cb_max_namelen)
5503                 cbp->cb_max_namelen  = znamelen;
5504
5505         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
5506                 const char *tag = nvpair_name(nvp);
5507                 size_t taglen = strnlen(tag, MAXNAMELEN);
5508                 if (taglen > cbp->cb_max_taglen)
5509                         cbp->cb_max_taglen  = taglen;
5510         }
5511
5512         return (nvlist_add_nvlist(top_nvl, zname, nvl));
5513 }
5514
5515 /*
5516  * zfs holds [-r] <snap> ...
5517  *
5518  *      -r      Recursively hold
5519  */
5520 static int
5521 zfs_do_holds(int argc, char **argv)
5522 {
5523         int errors = 0;
5524         int c;
5525         int i;
5526         boolean_t scripted = B_FALSE;
5527         boolean_t recursive = B_FALSE;
5528         const char *opts = "rH";
5529         nvlist_t *nvl;
5530
5531         int types = ZFS_TYPE_SNAPSHOT;
5532         holds_cbdata_t cb = { 0 };
5533
5534         int limit = 0;
5535         int ret = 0;
5536         int flags = 0;
5537
5538         /* check options */
5539         while ((c = getopt(argc, argv, opts)) != -1) {
5540                 switch (c) {
5541                 case 'r':
5542                         recursive = B_TRUE;
5543                         break;
5544                 case 'H':
5545                         scripted = B_TRUE;
5546                         break;
5547                 case '?':
5548                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5549                             optopt);
5550                         usage(B_FALSE);
5551                 }
5552         }
5553
5554         if (recursive) {
5555                 types |= ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME;
5556                 flags |= ZFS_ITER_RECURSE;
5557         }
5558
5559         argc -= optind;
5560         argv += optind;
5561
5562         /* check number of arguments */
5563         if (argc < 1)
5564                 usage(B_FALSE);
5565
5566         if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0)
5567                 nomem();
5568
5569         for (i = 0; i < argc; ++i) {
5570                 char *snapshot = argv[i];
5571                 const char *delim;
5572                 const char *snapname;
5573
5574                 delim = strchr(snapshot, '@');
5575                 if (delim == NULL) {
5576                         (void) fprintf(stderr,
5577                             gettext("'%s' is not a snapshot\n"), snapshot);
5578                         ++errors;
5579                         continue;
5580                 }
5581                 snapname = delim + 1;
5582                 if (recursive)
5583                         snapshot[delim - snapshot] = '\0';
5584
5585                 cb.cb_recursive = recursive;
5586                 cb.cb_snapname = snapname;
5587                 cb.cb_nvlp = &nvl;
5588
5589                 /*
5590                  *  1. collect holds data, set format options
5591                  */
5592                 ret = zfs_for_each(argc, argv, flags, types, NULL, NULL, limit,
5593                     holds_callback, &cb);
5594                 if (ret != 0)
5595                         ++errors;
5596         }
5597
5598         /*
5599          *  2. print holds data
5600          */
5601         print_holds(scripted, cb.cb_max_namelen, cb.cb_max_taglen, nvl);
5602
5603         if (nvlist_empty(nvl))
5604                 (void) fprintf(stderr, gettext("no datasets available\n"));
5605
5606         nvlist_free(nvl);
5607
5608         return (0 != errors);
5609 }
5610
5611 #define CHECK_SPINNER 30
5612 #define SPINNER_TIME 3          /* seconds */
5613 #define MOUNT_TIME 5            /* seconds */
5614
5615 static int
5616 get_one_dataset(zfs_handle_t *zhp, void *data)
5617 {
5618         static char *spin[] = { "-", "\\", "|", "/" };
5619         static int spinval = 0;
5620         static int spincheck = 0;
5621         static time_t last_spin_time = (time_t)0;
5622         get_all_cb_t *cbp = data;
5623         zfs_type_t type = zfs_get_type(zhp);
5624
5625         if (cbp->cb_verbose) {
5626                 if (--spincheck < 0) {
5627                         time_t now = time(NULL);
5628                         if (last_spin_time + SPINNER_TIME < now) {
5629                                 update_progress(spin[spinval++ % 4]);
5630                                 last_spin_time = now;
5631                         }
5632                         spincheck = CHECK_SPINNER;
5633                 }
5634         }
5635
5636         /*
5637          * Iterate over any nested datasets.
5638          */
5639         if (zfs_iter_filesystems(zhp, get_one_dataset, data) != 0) {
5640                 zfs_close(zhp);
5641                 return (1);
5642         }
5643
5644         /*
5645          * Skip any datasets whose type does not match.
5646          */
5647         if ((type & ZFS_TYPE_FILESYSTEM) == 0) {
5648                 zfs_close(zhp);
5649                 return (0);
5650         }
5651         libzfs_add_handle(cbp, zhp);
5652         assert(cbp->cb_used <= cbp->cb_alloc);
5653
5654         return (0);
5655 }
5656
5657 static void
5658 get_all_datasets(zfs_handle_t ***dslist, size_t *count, boolean_t verbose)
5659 {
5660         get_all_cb_t cb = { 0 };
5661         cb.cb_verbose = verbose;
5662         cb.cb_getone = get_one_dataset;
5663
5664         if (verbose)
5665                 set_progress_header(gettext("Reading ZFS config"));
5666         (void) zfs_iter_root(g_zfs, get_one_dataset, &cb);
5667
5668         *dslist = cb.cb_handles;
5669         *count = cb.cb_used;
5670
5671         if (verbose)
5672                 finish_progress(gettext("done."));
5673 }
5674
5675 /*
5676  * Generic callback for sharing or mounting filesystems.  Because the code is so
5677  * similar, we have a common function with an extra parameter to determine which
5678  * mode we are using.
5679  */
5680 #define OP_SHARE        0x1
5681 #define OP_MOUNT        0x2
5682
5683 /*
5684  * Share or mount a dataset.
5685  */
5686 static int
5687 share_mount_one(zfs_handle_t *zhp, int op, int flags, char *protocol,
5688     boolean_t explicit, const char *options)
5689 {
5690         char mountpoint[ZFS_MAXPROPLEN];
5691         char shareopts[ZFS_MAXPROPLEN];
5692         char smbshareopts[ZFS_MAXPROPLEN];
5693         const char *cmdname = op == OP_SHARE ? "share" : "mount";
5694         struct mnttab mnt;
5695         uint64_t zoned, canmount;
5696         boolean_t shared_nfs, shared_smb;
5697
5698         assert(zfs_get_type(zhp) & ZFS_TYPE_FILESYSTEM);
5699
5700         /*
5701          * Check to make sure we can mount/share this dataset.  If we
5702          * are in the global zone and the filesystem is exported to a
5703          * local zone, or if we are in a local zone and the
5704          * filesystem is not exported, then it is an error.
5705          */
5706         zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED);
5707
5708         if (zoned && getzoneid() == GLOBAL_ZONEID) {
5709                 if (!explicit)
5710                         return (0);
5711
5712                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5713                     "dataset is exported to a local zone\n"), cmdname,
5714                     zfs_get_name(zhp));
5715                 return (1);
5716
5717         } else if (!zoned && getzoneid() != GLOBAL_ZONEID) {
5718                 if (!explicit)
5719                         return (0);
5720
5721                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5722                     "permission denied\n"), cmdname,
5723                     zfs_get_name(zhp));
5724                 return (1);
5725         }
5726
5727         /*
5728          * Ignore any filesystems which don't apply to us. This
5729          * includes those with a legacy mountpoint, or those with
5730          * legacy share options.
5731          */
5732         verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
5733             sizeof (mountpoint), NULL, NULL, 0, B_FALSE) == 0);
5734         verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, shareopts,
5735             sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0);
5736         verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshareopts,
5737             sizeof (smbshareopts), NULL, NULL, 0, B_FALSE) == 0);
5738
5739         if (op == OP_SHARE && strcmp(shareopts, "off") == 0 &&
5740             strcmp(smbshareopts, "off") == 0) {
5741                 if (!explicit)
5742                         return (0);
5743
5744                 (void) fprintf(stderr, gettext("cannot share '%s': "
5745                     "legacy share\n"), zfs_get_name(zhp));
5746                 (void) fprintf(stderr, gettext("use share(1M) to "
5747                     "share this filesystem, or set "
5748                     "sharenfs property on\n"));
5749                 return (1);
5750         }
5751
5752         /*
5753          * We cannot share or mount legacy filesystems. If the
5754          * shareopts is non-legacy but the mountpoint is legacy, we
5755          * treat it as a legacy share.
5756          */
5757         if (strcmp(mountpoint, "legacy") == 0) {
5758                 if (!explicit)
5759                         return (0);
5760
5761                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5762                     "legacy mountpoint\n"), cmdname, zfs_get_name(zhp));
5763                 (void) fprintf(stderr, gettext("use %s(1M) to "
5764                     "%s this filesystem\n"), cmdname, cmdname);
5765                 return (1);
5766         }
5767
5768         if (strcmp(mountpoint, "none") == 0) {
5769                 if (!explicit)
5770                         return (0);
5771
5772                 (void) fprintf(stderr, gettext("cannot %s '%s': no "
5773                     "mountpoint set\n"), cmdname, zfs_get_name(zhp));
5774                 return (1);
5775         }
5776
5777         /*
5778          * canmount     explicit        outcome
5779          * on           no              pass through
5780          * on           yes             pass through
5781          * off          no              return 0
5782          * off          yes             display error, return 1
5783          * noauto       no              return 0
5784          * noauto       yes             pass through
5785          */
5786         canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT);
5787         if (canmount == ZFS_CANMOUNT_OFF) {
5788                 if (!explicit)
5789                         return (0);
5790
5791                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5792                     "'canmount' property is set to 'off'\n"), cmdname,
5793                     zfs_get_name(zhp));
5794                 return (1);
5795         } else if (canmount == ZFS_CANMOUNT_NOAUTO && !explicit) {
5796                 return (0);
5797         }
5798
5799         /*
5800          * At this point, we have verified that the mountpoint and/or
5801          * shareopts are appropriate for auto management. If the
5802          * filesystem is already mounted or shared, return (failing
5803          * for explicit requests); otherwise mount or share the
5804          * filesystem.
5805          */
5806         switch (op) {
5807         case OP_SHARE:
5808
5809                 shared_nfs = zfs_is_shared_nfs(zhp, NULL);
5810                 shared_smb = zfs_is_shared_smb(zhp, NULL);
5811
5812                 if ((shared_nfs && shared_smb) ||
5813                     ((shared_nfs && strcmp(shareopts, "on") == 0) &&
5814                     (strcmp(smbshareopts, "off") == 0)) ||
5815                     ((shared_smb && strcmp(smbshareopts, "on") == 0) &&
5816                     (strcmp(shareopts, "off") == 0))) {
5817                         if (!explicit)
5818                                 return (0);
5819
5820                         (void) fprintf(stderr, gettext("cannot share "
5821                             "'%s': filesystem already shared\n"),
5822                             zfs_get_name(zhp));
5823                         return (1);
5824                 }
5825
5826                 if (!zfs_is_mounted(zhp, NULL) &&
5827                     zfs_mount(zhp, NULL, 0) != 0)
5828                         return (1);
5829
5830                 if (protocol == NULL) {
5831                         if (zfs_shareall(zhp) != 0)
5832                                 return (1);
5833                 } else if (strcmp(protocol, "nfs") == 0) {
5834                         if (zfs_share_nfs(zhp))
5835                                 return (1);
5836                 } else if (strcmp(protocol, "smb") == 0) {
5837                         if (zfs_share_smb(zhp))
5838                                 return (1);
5839                 } else {
5840                         (void) fprintf(stderr, gettext("cannot share "
5841                             "'%s': invalid share type '%s' "
5842                             "specified\n"),
5843                             zfs_get_name(zhp), protocol);
5844                         return (1);
5845                 }
5846
5847                 break;
5848
5849         case OP_MOUNT:
5850                 if (options == NULL)
5851                         mnt.mnt_mntopts = "";
5852                 else
5853                         mnt.mnt_mntopts = (char *)options;
5854
5855                 if (!hasmntopt(&mnt, MNTOPT_REMOUNT) &&
5856                     zfs_is_mounted(zhp, NULL)) {
5857                         if (!explicit)
5858                                 return (0);
5859
5860                         (void) fprintf(stderr, gettext("cannot mount "
5861                             "'%s': filesystem already mounted\n"),
5862                             zfs_get_name(zhp));
5863                         return (1);
5864                 }
5865
5866                 if (zfs_mount(zhp, options, flags) != 0)
5867                         return (1);
5868                 break;
5869         }
5870
5871         return (0);
5872 }
5873
5874 /*
5875  * Reports progress in the form "(current/total)".  Not thread-safe.
5876  */
5877 static void
5878 report_mount_progress(int current, int total)
5879 {
5880         static time_t last_progress_time = 0;
5881         time_t now = time(NULL);
5882         char info[32];
5883
5884         /* report 1..n instead of 0..n-1 */
5885         ++current;
5886
5887         /* display header if we're here for the first time */
5888         if (current == 1) {
5889                 set_progress_header(gettext("Mounting ZFS filesystems"));
5890         } else if (current != total && last_progress_time + MOUNT_TIME >= now) {
5891                 /* too soon to report again */
5892                 return;
5893         }
5894
5895         last_progress_time = now;
5896
5897         (void) sprintf(info, "(%d/%d)", current, total);
5898
5899         if (current == total)
5900                 finish_progress(info);
5901         else
5902                 update_progress(info);
5903 }
5904
5905 static void
5906 append_options(char *mntopts, char *newopts)
5907 {
5908         int len = strlen(mntopts);
5909
5910         /* original length plus new string to append plus 1 for the comma */
5911         if (len + 1 + strlen(newopts) >= MNT_LINE_MAX) {
5912                 (void) fprintf(stderr, gettext("the opts argument for "
5913                     "'%s' option is too long (more than %d chars)\n"),
5914                     "-o", MNT_LINE_MAX);
5915                 usage(B_FALSE);
5916         }
5917
5918         if (*mntopts)
5919                 mntopts[len++] = ',';
5920
5921         (void) strcpy(&mntopts[len], newopts);
5922 }
5923
5924 static int
5925 share_mount(int op, int argc, char **argv)
5926 {
5927         int do_all = 0;
5928         boolean_t verbose = B_FALSE;
5929         int c, ret = 0;
5930         char *options = NULL;
5931         int flags = 0;
5932
5933         /* check options */
5934         while ((c = getopt(argc, argv, op == OP_MOUNT ? ":avo:O" : "a"))
5935             != -1) {
5936                 switch (c) {
5937                 case 'a':
5938                         do_all = 1;
5939                         break;
5940                 case 'v':
5941                         verbose = B_TRUE;
5942                         break;
5943                 case 'o':
5944                         if (*optarg == '\0') {
5945                                 (void) fprintf(stderr, gettext("empty mount "
5946                                     "options (-o) specified\n"));
5947                                 usage(B_FALSE);
5948                         }
5949
5950                         if (options == NULL)
5951                                 options = safe_malloc(MNT_LINE_MAX + 1);
5952
5953                         /* option validation is done later */
5954                         append_options(options, optarg);
5955                         break;
5956                 case 'O':
5957                         flags |= MS_OVERLAY;
5958                         break;
5959                 case ':':
5960                         (void) fprintf(stderr, gettext("missing argument for "
5961                             "'%c' option\n"), optopt);
5962                         usage(B_FALSE);
5963                         break;
5964                 case '?':
5965                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5966                             optopt);
5967                         usage(B_FALSE);
5968                 }
5969         }
5970
5971         argc -= optind;
5972         argv += optind;
5973
5974         /* check number of arguments */
5975         if (do_all) {
5976                 zfs_handle_t **dslist = NULL;
5977                 size_t i, count = 0;
5978                 char *protocol = NULL;
5979
5980                 if (op == OP_SHARE && argc > 0) {
5981                         if (strcmp(argv[0], "nfs") != 0 &&
5982                             strcmp(argv[0], "smb") != 0) {
5983                                 (void) fprintf(stderr, gettext("share type "
5984                                     "must be 'nfs' or 'smb'\n"));
5985                                 usage(B_FALSE);
5986                         }
5987                         protocol = argv[0];
5988                         argc--;
5989                         argv++;
5990                 }
5991
5992                 if (argc != 0) {
5993                         (void) fprintf(stderr, gettext("too many arguments\n"));
5994                         usage(B_FALSE);
5995                 }
5996
5997                 start_progress_timer();
5998                 get_all_datasets(&dslist, &count, verbose);
5999
6000                 if (count == 0)
6001                         return (0);
6002
6003                 qsort(dslist, count, sizeof (void *), libzfs_dataset_cmp);
6004
6005                 for (i = 0; i < count; i++) {
6006                         if (verbose)
6007                                 report_mount_progress(i, count);
6008
6009                         if (share_mount_one(dslist[i], op, flags, protocol,
6010                             B_FALSE, options) != 0)
6011                                 ret = 1;
6012                         zfs_close(dslist[i]);
6013                 }
6014
6015                 free(dslist);
6016         } else if (argc == 0) {
6017                 struct mnttab entry;
6018
6019                 if ((op == OP_SHARE) || (options != NULL)) {
6020                         (void) fprintf(stderr, gettext("missing filesystem "
6021                             "argument (specify -a for all)\n"));
6022                         usage(B_FALSE);
6023                 }
6024
6025                 /*
6026                  * When mount is given no arguments, go through /etc/mtab and
6027                  * display any active ZFS mounts.  We hide any snapshots, since
6028                  * they are controlled automatically.
6029                  */
6030
6031                 /* Reopen MNTTAB to prevent reading stale data from open file */
6032                 if (freopen(MNTTAB, "r", mnttab_file) == NULL)
6033                         return (ENOENT);
6034
6035                 while (getmntent(mnttab_file, &entry) == 0) {
6036                         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0 ||
6037                             strchr(entry.mnt_special, '@') != NULL)
6038                                 continue;
6039
6040                         (void) printf("%-30s  %s\n", entry.mnt_special,
6041                             entry.mnt_mountp);
6042                 }
6043
6044         } else {
6045                 zfs_handle_t *zhp;
6046
6047                 if (argc > 1) {
6048                         (void) fprintf(stderr,
6049                             gettext("too many arguments\n"));
6050                         usage(B_FALSE);
6051                 }
6052
6053                 if ((zhp = zfs_open(g_zfs, argv[0],
6054                     ZFS_TYPE_FILESYSTEM)) == NULL) {
6055                         ret = 1;
6056                 } else {
6057                         ret = share_mount_one(zhp, op, flags, NULL, B_TRUE,
6058                             options);
6059                         zfs_close(zhp);
6060                 }
6061         }
6062
6063         return (ret);
6064 }
6065
6066 /*
6067  * zfs mount -a [nfs]
6068  * zfs mount filesystem
6069  *
6070  * Mount all filesystems, or mount the given filesystem.
6071  */
6072 static int
6073 zfs_do_mount(int argc, char **argv)
6074 {
6075         return (share_mount(OP_MOUNT, argc, argv));
6076 }
6077
6078 /*
6079  * zfs share -a [nfs | smb]
6080  * zfs share filesystem
6081  *
6082  * Share all filesystems, or share the given filesystem.
6083  */
6084 static int
6085 zfs_do_share(int argc, char **argv)
6086 {
6087         return (share_mount(OP_SHARE, argc, argv));
6088 }
6089
6090 typedef struct unshare_unmount_node {
6091         zfs_handle_t    *un_zhp;
6092         char            *un_mountp;
6093         uu_avl_node_t   un_avlnode;
6094 } unshare_unmount_node_t;
6095
6096 /* ARGSUSED */
6097 static int
6098 unshare_unmount_compare(const void *larg, const void *rarg, void *unused)
6099 {
6100         const unshare_unmount_node_t *l = larg;
6101         const unshare_unmount_node_t *r = rarg;
6102
6103         return (strcmp(l->un_mountp, r->un_mountp));
6104 }
6105
6106 /*
6107  * Convenience routine used by zfs_do_umount() and manual_unmount().  Given an
6108  * absolute path, find the entry /etc/mtab, verify that its a ZFS filesystem,
6109  * and unmount it appropriately.
6110  */
6111 static int
6112 unshare_unmount_path(int op, char *path, int flags, boolean_t is_manual)
6113 {
6114         zfs_handle_t *zhp;
6115         int ret = 0;
6116         struct stat64 statbuf;
6117         struct extmnttab entry;
6118         const char *cmdname = (op == OP_SHARE) ? "unshare" : "unmount";
6119         ino_t path_inode;
6120
6121         /*
6122          * Search for the path in /etc/mtab.  Rather than looking for the
6123          * specific path, which can be fooled by non-standard paths (i.e. ".."
6124          * or "//"), we stat() the path and search for the corresponding
6125          * (major,minor) device pair.
6126          */
6127         if (stat64(path, &statbuf) != 0) {
6128                 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
6129                     cmdname, path, strerror(errno));
6130                 return (1);
6131         }
6132         path_inode = statbuf.st_ino;
6133
6134         /*
6135          * Search for the given (major,minor) pair in the mount table.
6136          */
6137
6138         /* Reopen MNTTAB to prevent reading stale data from open file */
6139         if (freopen(MNTTAB, "r", mnttab_file) == NULL)
6140                 return (ENOENT);
6141
6142         while ((ret = getextmntent(mnttab_file, &entry, 0)) == 0) {
6143                 if (entry.mnt_major == major(statbuf.st_dev) &&
6144                     entry.mnt_minor == minor(statbuf.st_dev))
6145                         break;
6146         }
6147         if (ret != 0) {
6148                 if (op == OP_SHARE) {
6149                         (void) fprintf(stderr, gettext("cannot %s '%s': not "
6150                             "currently mounted\n"), cmdname, path);
6151                         return (1);
6152                 }
6153                 (void) fprintf(stderr, gettext("warning: %s not in mtab\n"),
6154                     path);
6155                 if ((ret = umount2(path, flags)) != 0)
6156                         (void) fprintf(stderr, gettext("%s: %s\n"), path,
6157                             strerror(errno));
6158                 return (ret != 0);
6159         }
6160
6161         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) {
6162                 (void) fprintf(stderr, gettext("cannot %s '%s': not a ZFS "
6163                     "filesystem\n"), cmdname, path);
6164                 return (1);
6165         }
6166
6167         if ((zhp = zfs_open(g_zfs, entry.mnt_special,
6168             ZFS_TYPE_FILESYSTEM)) == NULL)
6169                 return (1);
6170
6171         ret = 1;
6172         if (stat64(entry.mnt_mountp, &statbuf) != 0) {
6173                 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
6174                     cmdname, path, strerror(errno));
6175                 goto out;
6176         } else if (statbuf.st_ino != path_inode) {
6177                 (void) fprintf(stderr, gettext("cannot "
6178                     "%s '%s': not a mountpoint\n"), cmdname, path);
6179                 goto out;
6180         }
6181
6182         if (op == OP_SHARE) {
6183                 char nfs_mnt_prop[ZFS_MAXPROPLEN];
6184                 char smbshare_prop[ZFS_MAXPROPLEN];
6185
6186                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, nfs_mnt_prop,
6187                     sizeof (nfs_mnt_prop), NULL, NULL, 0, B_FALSE) == 0);
6188                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshare_prop,
6189                     sizeof (smbshare_prop), NULL, NULL, 0, B_FALSE) == 0);
6190
6191                 if (strcmp(nfs_mnt_prop, "off") == 0 &&
6192                     strcmp(smbshare_prop, "off") == 0) {
6193                         (void) fprintf(stderr, gettext("cannot unshare "
6194                             "'%s': legacy share\n"), path);
6195                         (void) fprintf(stderr, gettext("use exportfs(8) "
6196                             "or smbcontrol(1) to unshare this filesystem\n"));
6197                 } else if (!zfs_is_shared(zhp)) {
6198                         (void) fprintf(stderr, gettext("cannot unshare '%s': "
6199                             "not currently shared\n"), path);
6200                 } else {
6201                         ret = zfs_unshareall_bypath(zhp, path);
6202                 }
6203         } else {
6204                 char mtpt_prop[ZFS_MAXPROPLEN];
6205
6206                 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mtpt_prop,
6207                     sizeof (mtpt_prop), NULL, NULL, 0, B_FALSE) == 0);
6208
6209                 if (is_manual) {
6210                         ret = zfs_unmount(zhp, NULL, flags);
6211                 } else if (strcmp(mtpt_prop, "legacy") == 0) {
6212                         (void) fprintf(stderr, gettext("cannot unmount "
6213                             "'%s': legacy mountpoint\n"),
6214                             zfs_get_name(zhp));
6215                         (void) fprintf(stderr, gettext("use umount(8) "
6216                             "to unmount this filesystem\n"));
6217                 } else {
6218                         ret = zfs_unmountall(zhp, flags);
6219                 }
6220         }
6221
6222 out:
6223         zfs_close(zhp);
6224
6225         return (ret != 0);
6226 }
6227
6228 /*
6229  * Generic callback for unsharing or unmounting a filesystem.
6230  */
6231 static int
6232 unshare_unmount(int op, int argc, char **argv)
6233 {
6234         int do_all = 0;
6235         int flags = 0;
6236         int ret = 0;
6237         int c;
6238         zfs_handle_t *zhp;
6239         char nfs_mnt_prop[ZFS_MAXPROPLEN];
6240         char sharesmb[ZFS_MAXPROPLEN];
6241
6242         /* check options */
6243         while ((c = getopt(argc, argv, op == OP_SHARE ? "a" : "af")) != -1) {
6244                 switch (c) {
6245                 case 'a':
6246                         do_all = 1;
6247                         break;
6248                 case 'f':
6249                         flags = MS_FORCE;
6250                         break;
6251                 case '?':
6252                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6253                             optopt);
6254                         usage(B_FALSE);
6255                 }
6256         }
6257
6258         argc -= optind;
6259         argv += optind;
6260
6261         if (do_all) {
6262                 /*
6263                  * We could make use of zfs_for_each() to walk all datasets in
6264                  * the system, but this would be very inefficient, especially
6265                  * since we would have to linearly search /etc/mtab for each
6266                  * one.  Instead, do one pass through /etc/mtab looking for
6267                  * zfs entries and call zfs_unmount() for each one.
6268                  *
6269                  * Things get a little tricky if the administrator has created
6270                  * mountpoints beneath other ZFS filesystems.  In this case, we
6271                  * have to unmount the deepest filesystems first.  To accomplish
6272                  * this, we place all the mountpoints in an AVL tree sorted by
6273                  * the special type (dataset name), and walk the result in
6274                  * reverse to make sure to get any snapshots first.
6275                  */
6276                 struct mnttab entry;
6277                 uu_avl_pool_t *pool;
6278                 uu_avl_t *tree = NULL;
6279                 unshare_unmount_node_t *node;
6280                 uu_avl_index_t idx;
6281                 uu_avl_walk_t *walk;
6282
6283                 if (argc != 0) {
6284                         (void) fprintf(stderr, gettext("too many arguments\n"));
6285                         usage(B_FALSE);
6286                 }
6287
6288                 if (((pool = uu_avl_pool_create("unmount_pool",
6289                     sizeof (unshare_unmount_node_t),
6290                     offsetof(unshare_unmount_node_t, un_avlnode),
6291                     unshare_unmount_compare, UU_DEFAULT)) == NULL) ||
6292                     ((tree = uu_avl_create(pool, NULL, UU_DEFAULT)) == NULL))
6293                         nomem();
6294
6295                 /* Reopen MNTTAB to prevent reading stale data from open file */
6296                 if (freopen(MNTTAB, "r", mnttab_file) == NULL)
6297                         return (ENOENT);
6298
6299                 while (getmntent(mnttab_file, &entry) == 0) {
6300
6301                         /* ignore non-ZFS entries */
6302                         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0)
6303                                 continue;
6304
6305                         /* ignore snapshots */
6306                         if (strchr(entry.mnt_special, '@') != NULL)
6307                                 continue;
6308
6309                         if ((zhp = zfs_open(g_zfs, entry.mnt_special,
6310                             ZFS_TYPE_FILESYSTEM)) == NULL) {
6311                                 ret = 1;
6312                                 continue;
6313                         }
6314
6315                         switch (op) {
6316                         case OP_SHARE:
6317                                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
6318                                     nfs_mnt_prop,
6319                                     sizeof (nfs_mnt_prop),
6320                                     NULL, NULL, 0, B_FALSE) == 0);
6321                                 if (strcmp(nfs_mnt_prop, "off") != 0)
6322                                         break;
6323                                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
6324                                     nfs_mnt_prop,
6325                                     sizeof (nfs_mnt_prop),
6326                                     NULL, NULL, 0, B_FALSE) == 0);
6327                                 if (strcmp(nfs_mnt_prop, "off") == 0)
6328                                         continue;
6329                                 break;
6330                         case OP_MOUNT:
6331                                 /* Ignore legacy mounts */
6332                                 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT,
6333                                     nfs_mnt_prop,
6334                                     sizeof (nfs_mnt_prop),
6335                                     NULL, NULL, 0, B_FALSE) == 0);
6336                                 if (strcmp(nfs_mnt_prop, "legacy") == 0)
6337                                         continue;
6338                                 /* Ignore canmount=noauto mounts */
6339                                 if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) ==
6340                                     ZFS_CANMOUNT_NOAUTO)
6341                                         continue;
6342                         default:
6343                                 break;
6344                         }
6345
6346                         node = safe_malloc(sizeof (unshare_unmount_node_t));
6347                         node->un_zhp = zhp;
6348                         node->un_mountp = safe_strdup(entry.mnt_mountp);
6349
6350                         uu_avl_node_init(node, &node->un_avlnode, pool);
6351
6352                         if (uu_avl_find(tree, node, NULL, &idx) == NULL) {
6353                                 uu_avl_insert(tree, node, idx);
6354                         } else {
6355                                 zfs_close(node->un_zhp);
6356                                 free(node->un_mountp);
6357                                 free(node);
6358                         }
6359                 }
6360
6361                 /*
6362                  * Walk the AVL tree in reverse, unmounting each filesystem and
6363                  * removing it from the AVL tree in the process.
6364                  */
6365                 if ((walk = uu_avl_walk_start(tree,
6366                     UU_WALK_REVERSE | UU_WALK_ROBUST)) == NULL)
6367                         nomem();
6368
6369                 while ((node = uu_avl_walk_next(walk)) != NULL) {
6370                         uu_avl_remove(tree, node);
6371
6372                         switch (op) {
6373                         case OP_SHARE:
6374                                 if (zfs_unshareall_bypath(node->un_zhp,
6375                                     node->un_mountp) != 0)
6376                                         ret = 1;
6377                                 break;
6378
6379                         case OP_MOUNT:
6380                                 if (zfs_unmount(node->un_zhp,
6381                                     node->un_mountp, flags) != 0)
6382                                         ret = 1;
6383                                 break;
6384                         }
6385
6386                         zfs_close(node->un_zhp);
6387                         free(node->un_mountp);
6388                         free(node);
6389                 }
6390
6391                 uu_avl_walk_end(walk);
6392                 uu_avl_destroy(tree);
6393                 uu_avl_pool_destroy(pool);
6394
6395         } else {
6396                 if (argc != 1) {
6397                         if (argc == 0)
6398                                 (void) fprintf(stderr,
6399                                     gettext("missing filesystem argument\n"));
6400                         else
6401                                 (void) fprintf(stderr,
6402                                     gettext("too many arguments\n"));
6403                         usage(B_FALSE);
6404                 }
6405
6406                 /*
6407                  * We have an argument, but it may be a full path or a ZFS
6408                  * filesystem.  Pass full paths off to unmount_path() (shared by
6409                  * manual_unmount), otherwise open the filesystem and pass to
6410                  * zfs_unmount().
6411                  */
6412                 if (argv[0][0] == '/')
6413                         return (unshare_unmount_path(op, argv[0],
6414                             flags, B_FALSE));
6415
6416                 if ((zhp = zfs_open(g_zfs, argv[0],
6417                     ZFS_TYPE_FILESYSTEM)) == NULL)
6418                         return (1);
6419
6420                 verify(zfs_prop_get(zhp, op == OP_SHARE ?
6421                     ZFS_PROP_SHARENFS : ZFS_PROP_MOUNTPOINT,
6422                     nfs_mnt_prop, sizeof (nfs_mnt_prop), NULL,
6423                     NULL, 0, B_FALSE) == 0);
6424
6425                 switch (op) {
6426                 case OP_SHARE:
6427                         verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
6428                             nfs_mnt_prop,
6429                             sizeof (nfs_mnt_prop),
6430                             NULL, NULL, 0, B_FALSE) == 0);
6431                         verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
6432                             sharesmb, sizeof (sharesmb), NULL, NULL,
6433                             0, B_FALSE) == 0);
6434
6435                         if (strcmp(nfs_mnt_prop, "off") == 0 &&
6436                             strcmp(sharesmb, "off") == 0) {
6437                                 (void) fprintf(stderr, gettext("cannot "
6438                                     "unshare '%s': legacy share\n"),
6439                                     zfs_get_name(zhp));
6440                                 (void) fprintf(stderr, gettext("use "
6441                                     "unshare(1M) to unshare this "
6442                                     "filesystem\n"));
6443                                 ret = 1;
6444                         } else if (!zfs_is_shared(zhp)) {
6445                                 (void) fprintf(stderr, gettext("cannot "
6446                                     "unshare '%s': not currently "
6447                                     "shared\n"), zfs_get_name(zhp));
6448                                 ret = 1;
6449                         } else if (zfs_unshareall(zhp) != 0) {
6450                                 ret = 1;
6451                         }
6452                         break;
6453
6454                 case OP_MOUNT:
6455                         if (strcmp(nfs_mnt_prop, "legacy") == 0) {
6456                                 (void) fprintf(stderr, gettext("cannot "
6457                                     "unmount '%s': legacy "
6458                                     "mountpoint\n"), zfs_get_name(zhp));
6459                                 (void) fprintf(stderr, gettext("use "
6460                                     "umount(1M) to unmount this "
6461                                     "filesystem\n"));
6462                                 ret = 1;
6463                         } else if (!zfs_is_mounted(zhp, NULL)) {
6464                                 (void) fprintf(stderr, gettext("cannot "
6465                                     "unmount '%s': not currently "
6466                                     "mounted\n"),
6467                                     zfs_get_name(zhp));
6468                                 ret = 1;
6469                         } else if (zfs_unmountall(zhp, flags) != 0) {
6470                                 ret = 1;
6471                         }
6472                         break;
6473                 }
6474
6475                 zfs_close(zhp);
6476         }
6477
6478         return (ret);
6479 }
6480
6481 /*
6482  * zfs unmount -a
6483  * zfs unmount filesystem
6484  *
6485  * Unmount all filesystems, or a specific ZFS filesystem.
6486  */
6487 static int
6488 zfs_do_unmount(int argc, char **argv)
6489 {
6490         return (unshare_unmount(OP_MOUNT, argc, argv));
6491 }
6492
6493 /*
6494  * zfs unshare -a
6495  * zfs unshare filesystem
6496  *
6497  * Unshare all filesystems, or a specific ZFS filesystem.
6498  */
6499 static int
6500 zfs_do_unshare(int argc, char **argv)
6501 {
6502         return (unshare_unmount(OP_SHARE, argc, argv));
6503 }
6504
6505 static int
6506 find_command_idx(char *command, int *idx)
6507 {
6508         int i;
6509
6510         for (i = 0; i < NCOMMAND; i++) {
6511                 if (command_table[i].name == NULL)
6512                         continue;
6513
6514                 if (strcmp(command, command_table[i].name) == 0) {
6515                         *idx = i;
6516                         return (0);
6517                 }
6518         }
6519         return (1);
6520 }
6521
6522 static int
6523 zfs_do_diff(int argc, char **argv)
6524 {
6525         zfs_handle_t *zhp;
6526         int flags = 0;
6527         char *tosnap = NULL;
6528         char *fromsnap = NULL;
6529         char *atp, *copy;
6530         int err = 0;
6531         int c;
6532
6533         while ((c = getopt(argc, argv, "FHt")) != -1) {
6534                 switch (c) {
6535                 case 'F':
6536                         flags |= ZFS_DIFF_CLASSIFY;
6537                         break;
6538                 case 'H':
6539                         flags |= ZFS_DIFF_PARSEABLE;
6540                         break;
6541                 case 't':
6542                         flags |= ZFS_DIFF_TIMESTAMP;
6543                         break;
6544                 default:
6545                         (void) fprintf(stderr,
6546                             gettext("invalid option '%c'\n"), optopt);
6547                         usage(B_FALSE);
6548                 }
6549         }
6550
6551         argc -= optind;
6552         argv += optind;
6553
6554         if (argc < 1) {
6555                 (void) fprintf(stderr,
6556                 gettext("must provide at least one snapshot name\n"));
6557                 usage(B_FALSE);
6558         }
6559
6560         if (argc > 2) {
6561                 (void) fprintf(stderr, gettext("too many arguments\n"));
6562                 usage(B_FALSE);
6563         }
6564
6565         fromsnap = argv[0];
6566         tosnap = (argc == 2) ? argv[1] : NULL;
6567
6568         copy = NULL;
6569         if (*fromsnap != '@')
6570                 copy = strdup(fromsnap);
6571         else if (tosnap)
6572                 copy = strdup(tosnap);
6573         if (copy == NULL)
6574                 usage(B_FALSE);
6575
6576         if ((atp = strchr(copy, '@')))
6577                 *atp = '\0';
6578
6579         if ((zhp = zfs_open(g_zfs, copy, ZFS_TYPE_FILESYSTEM)) == NULL)
6580                 return (1);
6581
6582         free(copy);
6583
6584         /*
6585          * Ignore SIGPIPE so that the library can give us
6586          * information on any failure
6587          */
6588         (void) sigignore(SIGPIPE);
6589
6590         err = zfs_show_diffs(zhp, STDOUT_FILENO, fromsnap, tosnap, flags);
6591
6592         zfs_close(zhp);
6593
6594         return (err != 0);
6595 }
6596
6597 /*
6598  * zfs bookmark <fs@snap> <fs#bmark>
6599  *
6600  * Creates a bookmark with the given name from the given snapshot.
6601  */
6602 static int
6603 zfs_do_bookmark(int argc, char **argv)
6604 {
6605         char snapname[ZFS_MAXNAMELEN];
6606         zfs_handle_t *zhp;
6607         nvlist_t *nvl;
6608         int ret = 0;
6609         int c;
6610
6611         /* check options */
6612         while ((c = getopt(argc, argv, "")) != -1) {
6613                 switch (c) {
6614                 case '?':
6615                         (void) fprintf(stderr,
6616                             gettext("invalid option '%c'\n"), optopt);
6617                         goto usage;
6618                 }
6619         }
6620
6621         argc -= optind;
6622         argv += optind;
6623
6624         /* check number of arguments */
6625         if (argc < 1) {
6626                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
6627                 goto usage;
6628         }
6629         if (argc < 2) {
6630                 (void) fprintf(stderr, gettext("missing bookmark argument\n"));
6631                 goto usage;
6632         }
6633
6634         if (strchr(argv[1], '#') == NULL) {
6635                 (void) fprintf(stderr,
6636                     gettext("invalid bookmark name '%s' -- "
6637                     "must contain a '#'\n"), argv[1]);
6638                 goto usage;
6639         }
6640
6641         if (argv[0][0] == '@') {
6642                 /*
6643                  * Snapshot name begins with @.
6644                  * Default to same fs as bookmark.
6645                  */
6646                 (void) strncpy(snapname, argv[1], sizeof (snapname));
6647                 *strchr(snapname, '#') = '\0';
6648                 (void) strlcat(snapname, argv[0], sizeof (snapname));
6649         } else {
6650                 (void) strncpy(snapname, argv[0], sizeof (snapname));
6651         }
6652         zhp = zfs_open(g_zfs, snapname, ZFS_TYPE_SNAPSHOT);
6653         if (zhp == NULL)
6654                 goto usage;
6655         zfs_close(zhp);
6656
6657
6658         nvl = fnvlist_alloc();
6659         fnvlist_add_string(nvl, argv[1], snapname);
6660         ret = lzc_bookmark(nvl, NULL);
6661         fnvlist_free(nvl);
6662
6663         if (ret != 0) {
6664                 const char *err_msg;
6665                 char errbuf[1024];
6666
6667                 (void) snprintf(errbuf, sizeof (errbuf),
6668                     dgettext(TEXT_DOMAIN,
6669                     "cannot create bookmark '%s'"), argv[1]);
6670
6671                 switch (ret) {
6672                 case EXDEV:
6673                         err_msg = "bookmark is in a different pool";
6674                         break;
6675                 case EEXIST:
6676                         err_msg = "bookmark exists";
6677                         break;
6678                 case EINVAL:
6679                         err_msg = "invalid argument";
6680                         break;
6681                 case ENOTSUP:
6682                         err_msg = "bookmark feature not enabled";
6683                         break;
6684                 case ENOSPC:
6685                         err_msg = "out of space";
6686                         break;
6687                 default:
6688                         err_msg = "unknown error";
6689                         break;
6690                 }
6691                 (void) fprintf(stderr, "%s: %s\n", errbuf,
6692                     dgettext(TEXT_DOMAIN, err_msg));
6693         }
6694
6695         return (ret != 0);
6696
6697 usage:
6698         usage(B_FALSE);
6699         return (-1);
6700 }
6701
6702 int
6703 main(int argc, char **argv)
6704 {
6705         int ret = 0;
6706         int i = 0;
6707         char *cmdname;
6708
6709         (void) setlocale(LC_ALL, "");
6710         (void) textdomain(TEXT_DOMAIN);
6711
6712         dprintf_setup(&argc, argv);
6713
6714         opterr = 0;
6715
6716         /*
6717          * Make sure the user has specified some command.
6718          */
6719         if (argc < 2) {
6720                 (void) fprintf(stderr, gettext("missing command\n"));
6721                 usage(B_FALSE);
6722         }
6723
6724         cmdname = argv[1];
6725
6726         /*
6727          * The 'umount' command is an alias for 'unmount'
6728          */
6729         if (strcmp(cmdname, "umount") == 0)
6730                 cmdname = "unmount";
6731
6732         /*
6733          * The 'recv' command is an alias for 'receive'
6734          */
6735         if (strcmp(cmdname, "recv") == 0)
6736                 cmdname = "receive";
6737
6738         /*
6739          * The 'snap' command is an alias for 'snapshot'
6740          */
6741         if (strcmp(cmdname, "snap") == 0)
6742                 cmdname = "snapshot";
6743
6744         /*
6745          * Special case '-?'
6746          */
6747         if ((strcmp(cmdname, "-?") == 0) ||
6748             (strcmp(cmdname, "--help") == 0))
6749                 usage(B_TRUE);
6750
6751         if ((g_zfs = libzfs_init()) == NULL) {
6752                 (void) fprintf(stderr, "%s", libzfs_error_init(errno));
6753                 return (1);
6754         }
6755
6756         mnttab_file = g_zfs->libzfs_mnttab;
6757
6758         zfs_save_arguments(argc, argv, history_str, sizeof (history_str));
6759
6760         libzfs_print_on_error(g_zfs, B_TRUE);
6761
6762         /*
6763          * Run the appropriate command.
6764          */
6765         libzfs_mnttab_cache(g_zfs, B_TRUE);
6766         if (find_command_idx(cmdname, &i) == 0) {
6767                 current_command = &command_table[i];
6768                 ret = command_table[i].func(argc - 1, argv + 1);
6769         } else if (strchr(cmdname, '=') != NULL) {
6770                 verify(find_command_idx("set", &i) == 0);
6771                 current_command = &command_table[i];
6772                 ret = command_table[i].func(argc, argv);
6773         } else {
6774                 (void) fprintf(stderr, gettext("unrecognized "
6775                     "command '%s'\n"), cmdname);
6776                 usage(B_FALSE);
6777                 ret = 1;
6778         }
6779
6780         if (ret == 0 && log_history)
6781                 (void) zpool_log_history(g_zfs, history_str);
6782
6783         libzfs_fini(g_zfs);
6784
6785         /*
6786          * The 'ZFS_ABORT' environment variable causes us to dump core on exit
6787          * for the purposes of running ::findleaks.
6788          */
6789         if (getenv("ZFS_ABORT") != NULL) {
6790                 (void) printf("dumping core by request\n");
6791                 abort();
6792         }
6793
6794         return (ret);
6795 }