cddl/contrib/opensolaris/cmd/zfs/zfs_main.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Copyright 2012 Nexenta Systems, Inc. All rights reserved.
  25  * Copyright (c) 2012 by Delphix. All rights reserved.
  26  * Copyright 2012 Milan Jurik. All rights reserved.
  27  * Copyright (c) 2012, Joyent, Inc. All rights reserved.
  28  * Copyright (c) 2011-2012 Pawel Jakub Dawidek <pawel@dawidek.net>.
  29  * All rights reserved.
  30  * Copyright (c) 2012 Martin Matuska <mm@FreeBSD.org>. All rights reserved.
  31  * Copyright (c) 2013 Steven Hartland.  All rights reserved.
  32  */
  33
  34 #include <assert.h>
  35 #include <ctype.h>
  36 #include <errno.h>
  37 #include <libgen.h>
  38 #include <libintl.h>
  39 #include <libuutil.h>
  40 #include <libnvpair.h>
  41 #include <locale.h>
  42 #include <stddef.h>
  43 #include <stdio.h>
  44 #include <stdlib.h>
  45 #include <strings.h>
  46 #include <unistd.h>
  47 #include <fcntl.h>
  48 #include <zone.h>
  49 #include <grp.h>
  50 #include <pwd.h>
  51 #include <signal.h>
  52 #include <sys/list.h>
  53 #include <sys/mntent.h>
  54 #include <sys/mnttab.h>
  55 #include <sys/mount.h>
  56 #include <sys/stat.h>
  57 #include <sys/fs/zfs.h>
  58 #include <sys/types.h>
  59 #include <time.h>
  60 #include <err.h>
  61 #include <jail.h>
  62
  63 #include <libzfs.h>
  64 #include <libzfs_core.h>
  65 #include <zfs_prop.h>
  66 #include <zfs_deleg.h>
  67 #include <libuutil.h>
  68 #ifdef sun
  69 #include <aclutils.h>
  70 #include <directory.h>
  71 #endif
  72
  73 #include "zfs_iter.h"
  74 #include "zfs_util.h"
  75 #include "zfs_comutil.h"
  76
  77 libzfs_handle_t *g_zfs;
  78
  79 static FILE *mnttab_file;
  80 static char history_str[HIS_MAX_RECORD_LEN];
  81 static boolean_t log_history = B_TRUE;
  82
  83 static int zfs_do_clone(int argc, char **argv);
  84 static int zfs_do_create(int argc, char **argv);
  85 static int zfs_do_destroy(int argc, char **argv);
  86 static int zfs_do_get(int argc, char **argv);
  87 static int zfs_do_inherit(int argc, char **argv);
  88 static int zfs_do_list(int argc, char **argv);
  89 static int zfs_do_mount(int argc, char **argv);
  90 static int zfs_do_rename(int argc, char **argv);
  91 static int zfs_do_rollback(int argc, char **argv);
  92 static int zfs_do_set(int argc, char **argv);
  93 static int zfs_do_upgrade(int argc, char **argv);
  94 static int zfs_do_snapshot(int argc, char **argv);
  95 static int zfs_do_unmount(int argc, char **argv);
  96 static int zfs_do_share(int argc, char **argv);
  97 static int zfs_do_unshare(int argc, char **argv);
  98 static int zfs_do_send(int argc, char **argv);
  99 static int zfs_do_receive(int argc, char **argv);
 100 static int zfs_do_promote(int argc, char **argv);
 101 static int zfs_do_userspace(int argc, char **argv);
 102 static int zfs_do_allow(int argc, char **argv);
 103 static int zfs_do_unallow(int argc, char **argv);
 104 static int zfs_do_hold(int argc, char **argv);
 105 static int zfs_do_holds(int argc, char **argv);
 106 static int zfs_do_release(int argc, char **argv);
 107 static int zfs_do_diff(int argc, char **argv);
 108 static int zfs_do_jail(int argc, char **argv);
 109 static int zfs_do_unjail(int argc, char **argv);
 110
 111 /*
 112  * Enable a reasonable set of defaults for libumem debugging on DEBUG builds.
 113  */
 114
 115 #ifdef DEBUG
 116 const char *
 117 _umem_debug_init(void)
 118 {
 119         return ("default,verbose"); /* $UMEM_DEBUG setting */
 120 }
 121
 122 const char *
 123 _umem_logging_init(void)
 124 {
 125         return ("fail,contents"); /* $UMEM_LOGGING setting */
 126 }
 127 #endif
 128
 129 typedef enum {
 130         HELP_CLONE,
 131         HELP_CREATE,
 132         HELP_DESTROY,
 133         HELP_GET,
 134         HELP_INHERIT,
 135         HELP_UPGRADE,
 136         HELP_JAIL,
 137         HELP_UNJAIL,
 138         HELP_LIST,
 139         HELP_MOUNT,
 140         HELP_PROMOTE,
 141         HELP_RECEIVE,
 142         HELP_RENAME,
 143         HELP_ROLLBACK,
 144         HELP_SEND,
 145         HELP_SET,
 146         HELP_SHARE,
 147         HELP_SNAPSHOT,
 148         HELP_UNMOUNT,
 149         HELP_UNSHARE,
 150         HELP_ALLOW,
 151         HELP_UNALLOW,
 152         HELP_USERSPACE,
 153         HELP_GROUPSPACE,
 154         HELP_HOLD,
 155         HELP_HOLDS,
 156         HELP_RELEASE,
 157         HELP_DIFF,
 158 } zfs_help_t;
 159
 160 typedef struct zfs_command {
 161         const char      *name;
 162         int             (*func)(int argc, char **argv);
 163         zfs_help_t      usage;
 164 } zfs_command_t;
 165
 166 /*
 167  * Master command table.  Each ZFS command has a name, associated function, and
 168  * usage message.  The usage messages need to be internationalized, so we have
 169  * to have a function to return the usage message based on a command index.
 170  *
 171  * These commands are organized according to how they are displayed in the usage
 172  * message.  An empty command (one with a NULL name) indicates an empty line in
 173  * the generic usage message.
 174  */
 175 static zfs_command_t command_table[] = {
 176         { "create",     zfs_do_create,          HELP_CREATE             },
 177         { "destroy",    zfs_do_destroy,         HELP_DESTROY            },
 178         { NULL },
 179         { "snapshot",   zfs_do_snapshot,        HELP_SNAPSHOT           },
 180         { "rollback",   zfs_do_rollback,        HELP_ROLLBACK           },
 181         { "clone",      zfs_do_clone,           HELP_CLONE              },
 182         { "promote",    zfs_do_promote,         HELP_PROMOTE            },
 183         { "rename",     zfs_do_rename,          HELP_RENAME             },
 184         { NULL },
 185         { "list",       zfs_do_list,            HELP_LIST               },
 186         { NULL },
 187         { "set",        zfs_do_set,             HELP_SET                },
 188         { "get",        zfs_do_get,             HELP_GET                },
 189         { "inherit",    zfs_do_inherit,         HELP_INHERIT            },
 190         { "upgrade",    zfs_do_upgrade,         HELP_UPGRADE            },
 191         { "userspace",  zfs_do_userspace,       HELP_USERSPACE          },
 192         { "groupspace", zfs_do_userspace,       HELP_GROUPSPACE         },
 193         { NULL },
 194         { "mount",      zfs_do_mount,           HELP_MOUNT              },
 195         { "unmount",    zfs_do_unmount,         HELP_UNMOUNT            },
 196         { "share",      zfs_do_share,           HELP_SHARE              },
 197         { "unshare",    zfs_do_unshare,         HELP_UNSHARE            },
 198         { NULL },
 199         { "send",       zfs_do_send,            HELP_SEND               },
 200         { "receive",    zfs_do_receive,         HELP_RECEIVE            },
 201         { NULL },
 202         { "allow",      zfs_do_allow,           HELP_ALLOW              },
 203         { NULL },
 204         { "unallow",    zfs_do_unallow,         HELP_UNALLOW            },
 205         { NULL },
 206         { "hold",       zfs_do_hold,            HELP_HOLD               },
 207         { "holds",      zfs_do_holds,           HELP_HOLDS              },
 208         { "release",    zfs_do_release,         HELP_RELEASE            },
 209         { "diff",       zfs_do_diff,            HELP_DIFF               },
 210         { NULL },
 211         { "jail",       zfs_do_jail,            HELP_JAIL               },
 212         { "unjail",     zfs_do_unjail,          HELP_UNJAIL             },
 213 };
 214
 215 #define NCOMMAND        (sizeof (command_table) / sizeof (command_table[0]))
 216
 217 zfs_command_t *current_command;
 218
 219 static const char *
 220 get_usage(zfs_help_t idx)
 221 {
 222         switch (idx) {
 223         case HELP_CLONE:
 224                 return (gettext("\tclone [-p] [-o property=value] ... "
 225                     "<snapshot> <filesystem|volume>\n"));
 226         case HELP_CREATE:
 227                 return (gettext("\tcreate [-pu] [-o property=value] ... "
 228                     "<filesystem>\n"
 229                     "\tcreate [-ps] [-b blocksize] [-o property=value] ... "
 230                     "-V <size> <volume>\n"));
 231         case HELP_DESTROY:
 232                 return (gettext("\tdestroy [-fnpRrv] <filesystem|volume>\n"
 233                     "\tdestroy [-dnpRrv] "
 234                     "<snapshot>[%<snapname>][,...]\n"));
 235         case HELP_GET:
 236                 return (gettext("\tget [-rHp] [-d max] "
 237                     "[-o \"all\" | field[,...]] [-t type[,...]] "
 238                     "[-s source[,...]]\n"
 239                     "\t    <\"all\" | property[,...]> "
 240                     "[filesystem|volume|snapshot] ...\n"));
 241         case HELP_INHERIT:
 242                 return (gettext("\tinherit [-rS] <property> "
 243                     "<filesystem|volume|snapshot> ...\n"));
 244         case HELP_UPGRADE:
 245                 return (gettext("\tupgrade [-v]\n"
 246                     "\tupgrade [-r] [-V version] <-a | filesystem ...>\n"));
 247         case HELP_JAIL:
 248                 return (gettext("\tjail <jailid|jailname> <filesystem>\n"));
 249         case HELP_UNJAIL:
 250                 return (gettext("\tunjail <jailid|jailname> <filesystem>\n"));
 251         case HELP_LIST:
 252                 return (gettext("\tlist [-rH][-d max] "
 253                     "[-o property[,...]] [-t type[,...]] [-s property] ...\n"
 254                     "\t    [-S property] ... "
 255                     "[filesystem|volume|snapshot] ...\n"));
 256         case HELP_MOUNT:
 257                 return (gettext("\tmount\n"
 258                     "\tmount [-vO] [-o opts] <-a | filesystem>\n"));
 259         case HELP_PROMOTE:
 260                 return (gettext("\tpromote <clone-filesystem>\n"));
 261         case HELP_RECEIVE:
 262                 return (gettext("\treceive [-vnFu] <filesystem|volume|"
 263                 "snapshot>\n"
 264                 "\treceive [-vnFu] [-d | -e] <filesystem>\n"));
 265         case HELP_RENAME:
 266                 return (gettext("\trename [-f] <filesystem|volume|snapshot> "
 267                     "<filesystem|volume|snapshot>\n"
 268                     "\trename [-f] -p <filesystem|volume> "
 269                     "<filesystem|volume>\n"
 270                     "\trename -r <snapshot> <snapshot>\n"
 271                     "\trename -u [-p] <filesystem> <filesystem>"));
 272         case HELP_ROLLBACK:
 273                 return (gettext("\trollback [-rRf] <snapshot>\n"));
 274         case HELP_SEND:
 275                 return (gettext("\tsend [-DnPpRv] "
 276                     "[-i snapshot | -I snapshot] <snapshot>\n"));
 277         case HELP_SET:
 278                 return (gettext("\tset <property=value> "
 279                     "<filesystem|volume|snapshot> ...\n"));
 280         case HELP_SHARE:
 281                 return (gettext("\tshare <-a | filesystem>\n"));
 282         case HELP_SNAPSHOT:
 283                 return (gettext("\tsnapshot [-r] [-o property=value] ... "
 284                     "<filesystem@snapname|volume@snapname> ...\n"));
 285         case HELP_UNMOUNT:
 286                 return (gettext("\tunmount [-f] "
 287                     "<-a | filesystem|mountpoint>\n"));
 288         case HELP_UNSHARE:
 289                 return (gettext("\tunshare "
 290                     "<-a | filesystem|mountpoint>\n"));
 291         case HELP_ALLOW:
 292                 return (gettext("\tallow <filesystem|volume>\n"
 293                     "\tallow [-ldug] "
 294                     "<\"everyone\"|user|group>[,...] <perm|@setname>[,...]\n"
 295                     "\t    <filesystem|volume>\n"
 296                     "\tallow [-ld] -e <perm|@setname>[,...] "
 297                     "<filesystem|volume>\n"
 298                     "\tallow -c <perm|@setname>[,...] <filesystem|volume>\n"
 299                     "\tallow -s @setname <perm|@setname>[,...] "
 300                     "<filesystem|volume>\n"));
 301         case HELP_UNALLOW:
 302                 return (gettext("\tunallow [-rldug] "
 303                     "<\"everyone\"|user|group>[,...]\n"
 304                     "\t    [<perm|@setname>[,...]] <filesystem|volume>\n"
 305                     "\tunallow [-rld] -e [<perm|@setname>[,...]] "
 306                     "<filesystem|volume>\n"
 307                     "\tunallow [-r] -c [<perm|@setname>[,...]] "
 308                     "<filesystem|volume>\n"
 309                     "\tunallow [-r] -s @setname [<perm|@setname>[,...]] "
 310                     "<filesystem|volume>\n"));
 311         case HELP_USERSPACE:
 312                 return (gettext("\tuserspace [-Hinp] [-o field[,...]] "
 313                     "[-s field] ...\n\t[-S field] ... "
 314                     "[-t type[,...]] <filesystem|snapshot>\n"));
 315         case HELP_GROUPSPACE:
 316                 return (gettext("\tgroupspace [-Hinp] [-o field[,...]] "
 317                     "[-s field] ...\n\t[-S field] ... "
 318                     "[-t type[,...]] <filesystem|snapshot>\n"));
 319         case HELP_HOLD:
 320                 return (gettext("\thold [-r] <tag> <snapshot> ...\n"));
 321         case HELP_HOLDS:
 322                 return (gettext("\tholds [-r] <snapshot> ...\n"));
 323         case HELP_RELEASE:
 324                 return (gettext("\trelease [-r] <tag> <snapshot> ...\n"));
 325         case HELP_DIFF:
 326                 return (gettext("\tdiff [-FHt] <snapshot> "
 327                     "[snapshot|filesystem]\n"));
 328         }
 329
 330         abort();
 331         /* NOTREACHED */
 332 }
 333
 334 void
 335 nomem(void)
 336 {
 337         (void) fprintf(stderr, gettext("internal error: out of memory\n"));
 338         exit(1);
 339 }
 340
 341 /*
 342  * Utility function to guarantee malloc() success.
 343  */
 344
 345 void *
 346 safe_malloc(size_t size)
 347 {
 348         void *data;
 349
 350         if ((data = calloc(1, size)) == NULL)
 351                 nomem();
 352
 353         return (data);
 354 }
 355
 356 static char *
 357 safe_strdup(char *str)
 358 {
 359         char *dupstr = strdup(str);
 360
 361         if (dupstr == NULL)
 362                 nomem();
 363
 364         return (dupstr);
 365 }
 366
 367 /*
 368  * Callback routine that will print out information for each of
 369  * the properties.
 370  */
 371 static int
 372 usage_prop_cb(int prop, void *cb)
 373 {
 374         FILE *fp = cb;
 375
 376         (void) fprintf(fp, "\t%-15s ", zfs_prop_to_name(prop));
 377
 378         if (zfs_prop_readonly(prop))
 379                 (void) fprintf(fp, " NO    ");
 380         else
 381                 (void) fprintf(fp, "YES    ");
 382
 383         if (zfs_prop_inheritable(prop))
 384                 (void) fprintf(fp, "  YES   ");
 385         else
 386                 (void) fprintf(fp, "   NO   ");
 387
 388         if (zfs_prop_values(prop) == NULL)
 389                 (void) fprintf(fp, "-\n");
 390         else
 391                 (void) fprintf(fp, "%s\n", zfs_prop_values(prop));
 392
 393         return (ZPROP_CONT);
 394 }
 395
 396 /*
 397  * Display usage message.  If we're inside a command, display only the usage for
 398  * that command.  Otherwise, iterate over the entire command table and display
 399  * a complete usage message.
 400  */
 401 static void
 402 usage(boolean_t requested)
 403 {
 404         int i;
 405         boolean_t show_properties = B_FALSE;
 406         FILE *fp = requested ? stdout : stderr;
 407
 408         if (current_command == NULL) {
 409
 410                 (void) fprintf(fp, gettext("usage: zfs command args ...\n"));
 411                 (void) fprintf(fp,
 412                     gettext("where 'command' is one of the following:\n\n"));
 413
 414                 for (i = 0; i < NCOMMAND; i++) {
 415                         if (command_table[i].name == NULL)
 416                                 (void) fprintf(fp, "\n");
 417                         else
 418                                 (void) fprintf(fp, "%s",
 419                                     get_usage(command_table[i].usage));
 420                 }
 421
 422                 (void) fprintf(fp, gettext("\nEach dataset is of the form: "
 423                     "pool/[dataset/]*dataset[@name]\n"));
 424         } else {
 425                 (void) fprintf(fp, gettext("usage:\n"));
 426                 (void) fprintf(fp, "%s", get_usage(current_command->usage));
 427         }
 428
 429         if (current_command != NULL &&
 430             (strcmp(current_command->name, "set") == 0 ||
 431             strcmp(current_command->name, "get") == 0 ||
 432             strcmp(current_command->name, "inherit") == 0 ||
 433             strcmp(current_command->name, "list") == 0))
 434                 show_properties = B_TRUE;
 435
 436         if (show_properties) {
 437                 (void) fprintf(fp,
 438                     gettext("\nThe following properties are supported:\n"));
 439
 440                 (void) fprintf(fp, "\n\t%-14s %s  %s   %s\n\n",
 441                     "PROPERTY", "EDIT", "INHERIT", "VALUES");
 442
 443                 /* Iterate over all properties */
 444                 (void) zprop_iter(usage_prop_cb, fp, B_FALSE, B_TRUE,
 445                     ZFS_TYPE_DATASET);
 446
 447                 (void) fprintf(fp, "\t%-15s ", "userused@...");
 448                 (void) fprintf(fp, " NO       NO   <size>\n");
 449                 (void) fprintf(fp, "\t%-15s ", "groupused@...");
 450                 (void) fprintf(fp, " NO       NO   <size>\n");
 451                 (void) fprintf(fp, "\t%-15s ", "userquota@...");
 452                 (void) fprintf(fp, "YES       NO   <size> | none\n");
 453                 (void) fprintf(fp, "\t%-15s ", "groupquota@...");
 454                 (void) fprintf(fp, "YES       NO   <size> | none\n");
 455                 (void) fprintf(fp, "\t%-15s ", "written@<snap>");
 456                 (void) fprintf(fp, " NO       NO   <size>\n");
 457
 458                 (void) fprintf(fp, gettext("\nSizes are specified in bytes "
 459                     "with standard units such as K, M, G, etc.\n"));
 460                 (void) fprintf(fp, gettext("\nUser-defined properties can "
 461                     "be specified by using a name containing a colon (:).\n"));
 462                 (void) fprintf(fp, gettext("\nThe {user|group}{used|quota}@ "
 463                     "properties must be appended with\n"
 464                     "a user or group specifier of one of these forms:\n"
 465                     "    POSIX name      (eg: \"matt\")\n"
 466                     "    POSIX id        (eg: \"126829\")\n"
 467                     "    SMB name@domain (eg: \"matt@sun\")\n"
 468                     "    SMB SID         (eg: \"S-1-234-567-89\")\n"));
 469         } else {
 470                 (void) fprintf(fp,
 471                     gettext("\nFor the property list, run: %s\n"),
 472                     "zfs set|get");
 473                 (void) fprintf(fp,
 474                     gettext("\nFor the delegated permission list, run: %s\n"),
 475                     "zfs allow|unallow");
 476         }
 477
 478         /*
 479          * See comments at end of main().
 480          */
 481         if (getenv("ZFS_ABORT") != NULL) {
 482                 (void) printf("dumping core by request\n");
 483                 abort();
 484         }
 485
 486         exit(requested ? 0 : 2);
 487 }
 488
 489 static int
 490 parseprop(nvlist_t *props)
 491 {
 492         char *propname = optarg;
 493         char *propval, *strval;
 494
 495         if ((propval = strchr(propname, '=')) == NULL) {
 496                 (void) fprintf(stderr, gettext("missing "
 497                     "'=' for -o option\n"));
 498                 return (-1);
 499         }
 500         *propval = '\0';
 501         propval++;
 502         if (nvlist_lookup_string(props, propname, &strval) == 0) {
 503                 (void) fprintf(stderr, gettext("property '%s' "
 504                     "specified multiple times\n"), propname);
 505                 return (-1);
 506         }
 507         if (nvlist_add_string(props, propname, propval) != 0)
 508                 nomem();
 509         return (0);
 510 }
 511
 512 static int
 513 parse_depth(char *opt, int *flags)
 514 {
 515         char *tmp;
 516         int depth;
 517
 518         depth = (int)strtol(opt, &tmp, 0);
 519         if (*tmp) {
 520                 (void) fprintf(stderr,
 521                     gettext("%s is not an integer\n"), optarg);
 522                 usage(B_FALSE);
 523         }
 524         if (depth < 0) {
 525                 (void) fprintf(stderr,
 526                     gettext("Depth can not be negative.\n"));
 527                 usage(B_FALSE);
 528         }
 529         *flags |= (ZFS_ITER_DEPTH_LIMIT|ZFS_ITER_RECURSE);
 530         return (depth);
 531 }
 532
 533 #define PROGRESS_DELAY 2                /* seconds */
 534
 535 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";
 536 static time_t pt_begin;
 537 static char *pt_header = NULL;
 538 static boolean_t pt_shown;
 539
 540 static void
 541 start_progress_timer(void)
 542 {
 543         pt_begin = time(NULL) + PROGRESS_DELAY;
 544         pt_shown = B_FALSE;
 545 }
 546
 547 static void
 548 set_progress_header(char *header)
 549 {
 550         assert(pt_header == NULL);
 551         pt_header = safe_strdup(header);
 552         if (pt_shown) {
 553                 (void) printf("%s: ", header);
 554                 (void) fflush(stdout);
 555         }
 556 }
 557
 558 static void
 559 update_progress(char *update)
 560 {
 561         if (!pt_shown && time(NULL) > pt_begin) {
 562                 int len = strlen(update);
 563
 564                 (void) printf("%s: %s%*.*s", pt_header, update, len, len,
 565                     pt_reverse);
 566                 (void) fflush(stdout);
 567                 pt_shown = B_TRUE;
 568         } else if (pt_shown) {
 569                 int len = strlen(update);
 570
 571                 (void) printf("%s%*.*s", update, len, len, pt_reverse);
 572                 (void) fflush(stdout);
 573         }
 574 }
 575
 576 static void
 577 finish_progress(char *done)
 578 {
 579         if (pt_shown) {
 580                 (void) printf("%s\n", done);
 581                 (void) fflush(stdout);
 582         }
 583         free(pt_header);
 584         pt_header = NULL;
 585 }
 586 /*
 587  * zfs clone [-p] [-o prop=value] ... <snap> <fs | vol>
 588  *
 589  * Given an existing dataset, create a writable copy whose initial contents
 590  * are the same as the source.  The newly created dataset maintains a
 591  * dependency on the original; the original cannot be destroyed so long as
 592  * the clone exists.
 593  *
 594  * The '-p' flag creates all the non-existing ancestors of the target first.
 595  */
 596 static int
 597 zfs_do_clone(int argc, char **argv)
 598 {
 599         zfs_handle_t *zhp = NULL;
 600         boolean_t parents = B_FALSE;
 601         nvlist_t *props;
 602         int ret = 0;
 603         int c;
 604
 605         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
 606                 nomem();
 607
 608         /* check options */
 609         while ((c = getopt(argc, argv, "o:p")) != -1) {
 610                 switch (c) {
 611                 case 'o':
 612                         if (parseprop(props))
 613                                 return (1);
 614                         break;
 615                 case 'p':
 616                         parents = B_TRUE;
 617                         break;
 618                 case '?':
 619                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
 620                             optopt);
 621                         goto usage;
 622                 }
 623         }
 624
 625         argc -= optind;
 626         argv += optind;
 627
 628         /* check number of arguments */
 629         if (argc < 1) {
 630                 (void) fprintf(stderr, gettext("missing source dataset "
 631                     "argument\n"));
 632                 goto usage;
 633         }
 634         if (argc < 2) {
 635                 (void) fprintf(stderr, gettext("missing target dataset "
 636                     "argument\n"));
 637                 goto usage;
 638         }
 639         if (argc > 2) {
 640                 (void) fprintf(stderr, gettext("too many arguments\n"));
 641                 goto usage;
 642         }
 643
 644         /* open the source dataset */
 645         if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
 646                 return (1);
 647
 648         if (parents && zfs_name_valid(argv[1], ZFS_TYPE_FILESYSTEM |
 649             ZFS_TYPE_VOLUME)) {
 650                 /*
 651                  * Now create the ancestors of the target dataset.  If the
 652                  * target already exists and '-p' option was used we should not
 653                  * complain.
 654                  */
 655                 if (zfs_dataset_exists(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM |
 656                     ZFS_TYPE_VOLUME))
 657                         return (0);
 658                 if (zfs_create_ancestors(g_zfs, argv[1]) != 0)
 659                         return (1);
 660         }
 661
 662         /* pass to libzfs */
 663         ret = zfs_clone(zhp, argv[1], props);
 664
 665         /* create the mountpoint if necessary */
 666         if (ret == 0) {
 667                 zfs_handle_t *clone;
 668
 669                 clone = zfs_open(g_zfs, argv[1], ZFS_TYPE_DATASET);
 670                 if (clone != NULL) {
 671                         if (zfs_get_type(clone) != ZFS_TYPE_VOLUME)
 672                                 if ((ret = zfs_mount(clone, NULL, 0)) == 0)
 673                                         ret = zfs_share(clone);
 674                         zfs_close(clone);
 675                 }
 676         }
 677
 678         zfs_close(zhp);
 679         nvlist_free(props);
 680
 681         return (!!ret);
 682
 683 usage:
 684         if (zhp)
 685                 zfs_close(zhp);
 686         nvlist_free(props);
 687         usage(B_FALSE);
 688         return (-1);
 689 }
 690
 691 /*
 692  * zfs create [-pu] [-o prop=value] ... fs
 693  * zfs create [-ps] [-b blocksize] [-o prop=value] ... -V vol size
 694  *
 695  * Create a new dataset.  This command can be used to create filesystems
 696  * and volumes.  Snapshot creation is handled by 'zfs snapshot'.
 697  * For volumes, the user must specify a size to be used.
 698  *
 699  * The '-s' flag applies only to volumes, and indicates that we should not try
 700  * to set the reservation for this volume.  By default we set a reservation
 701  * equal to the size for any volume.  For pools with SPA_VERSION >=
 702  * SPA_VERSION_REFRESERVATION, we set a refreservation instead.
 703  *
 704  * The '-p' flag creates all the non-existing ancestors of the target first.
 705  *
 706  * The '-u' flag prevents mounting of newly created file system.
 707  */
 708 static int
 709 zfs_do_create(int argc, char **argv)
 710 {
 711         zfs_type_t type = ZFS_TYPE_FILESYSTEM;
 712         zfs_handle_t *zhp = NULL;
 713         uint64_t volsize;
 714         int c;
 715         boolean_t noreserve = B_FALSE;
 716         boolean_t bflag = B_FALSE;
 717         boolean_t parents = B_FALSE;
 718         boolean_t nomount = B_FALSE;
 719         int ret = 1;
 720         nvlist_t *props;
 721         uint64_t intval;
 722         int canmount = ZFS_CANMOUNT_OFF;
 723
 724         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
 725                 nomem();
 726
 727         /* check options */
 728         while ((c = getopt(argc, argv, ":V:b:so:pu")) != -1) {
 729                 switch (c) {
 730                 case 'V':
 731                         type = ZFS_TYPE_VOLUME;
 732                         if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
 733                                 (void) fprintf(stderr, gettext("bad volume "
 734                                     "size '%s': %s\n"), optarg,
 735                                     libzfs_error_description(g_zfs));
 736                                 goto error;
 737                         }
 738
 739                         if (nvlist_add_uint64(props,
 740                             zfs_prop_to_name(ZFS_PROP_VOLSIZE), intval) != 0)
 741                                 nomem();
 742                         volsize = intval;
 743                         break;
 744                 case 'p':
 745                         parents = B_TRUE;
 746                         break;
 747                 case 'b':
 748                         bflag = B_TRUE;
 749                         if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
 750                                 (void) fprintf(stderr, gettext("bad volume "
 751                                     "block size '%s': %s\n"), optarg,
 752                                     libzfs_error_description(g_zfs));
 753                                 goto error;
 754                         }
 755
 756                         if (nvlist_add_uint64(props,
 757                             zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
 758                             intval) != 0)
 759                                 nomem();
 760                         break;
 761                 case 'o':
 762                         if (parseprop(props))
 763                                 goto error;
 764                         break;
 765                 case 's':
 766                         noreserve = B_TRUE;
 767                         break;
 768                 case 'u':
 769                         nomount = B_TRUE;
 770                         break;
 771                 case ':':
 772                         (void) fprintf(stderr, gettext("missing size "
 773                             "argument\n"));
 774                         goto badusage;
 775                 case '?':
 776                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
 777                             optopt);
 778                         goto badusage;
 779                 }
 780         }
 781
 782         if ((bflag || noreserve) && type != ZFS_TYPE_VOLUME) {
 783                 (void) fprintf(stderr, gettext("'-s' and '-b' can only be "
 784                     "used when creating a volume\n"));
 785                 goto badusage;
 786         }
 787         if (nomount && type != ZFS_TYPE_FILESYSTEM) {
 788                 (void) fprintf(stderr, gettext("'-u' can only be "
 789                     "used when creating a file system\n"));
 790                 goto badusage;
 791         }
 792
 793         argc -= optind;
 794         argv += optind;
 795
 796         /* check number of arguments */
 797         if (argc == 0) {
 798                 (void) fprintf(stderr, gettext("missing %s argument\n"),
 799                     zfs_type_to_name(type));
 800                 goto badusage;
 801         }
 802         if (argc > 1) {
 803                 (void) fprintf(stderr, gettext("too many arguments\n"));
 804                 goto badusage;
 805         }
 806
 807         if (type == ZFS_TYPE_VOLUME && !noreserve) {
 808                 zpool_handle_t *zpool_handle;
 809                 uint64_t spa_version;
 810                 char *p;
 811                 zfs_prop_t resv_prop;
 812                 char *strval;
 813
 814                 if (p = strchr(argv[0], '/'))
 815                         *p = '\0';
 816                 zpool_handle = zpool_open(g_zfs, argv[0]);
 817                 if (p != NULL)
 818                         *p = '/';
 819                 if (zpool_handle == NULL)
 820                         goto error;
 821                 spa_version = zpool_get_prop_int(zpool_handle,
 822                     ZPOOL_PROP_VERSION, NULL);
 823                 zpool_close(zpool_handle);
 824                 if (spa_version >= SPA_VERSION_REFRESERVATION)
 825                         resv_prop = ZFS_PROP_REFRESERVATION;
 826                 else
 827                         resv_prop = ZFS_PROP_RESERVATION;
 828                 volsize = zvol_volsize_to_reservation(volsize, props);
 829
 830                 if (nvlist_lookup_string(props, zfs_prop_to_name(resv_prop),
 831                     &strval) != 0) {
 832                         if (nvlist_add_uint64(props,
 833                             zfs_prop_to_name(resv_prop), volsize) != 0) {
 834                                 nvlist_free(props);
 835                                 nomem();
 836                         }
 837                 }
 838         }
 839
 840         if (parents && zfs_name_valid(argv[0], type)) {
 841                 /*
 842                  * Now create the ancestors of target dataset.  If the target
 843                  * already exists and '-p' option was used we should not
 844                  * complain.
 845                  */
 846                 if (zfs_dataset_exists(g_zfs, argv[0], type)) {
 847                         ret = 0;
 848                         goto error;
 849                 }
 850                 if (zfs_create_ancestors(g_zfs, argv[0]) != 0)
 851                         goto error;
 852         }
 853
 854         /* pass to libzfs */
 855         if (zfs_create(g_zfs, argv[0], type, props) != 0)
 856                 goto error;
 857
 858         if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL)
 859                 goto error;
 860
 861         ret = 0;
 862         /*
 863          * if the user doesn't want the dataset automatically mounted,
 864          * then skip the mount/share step
 865          */
 866         if (zfs_prop_valid_for_type(ZFS_PROP_CANMOUNT, type))
 867                 canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT);
 868
 869         /*
 870          * Mount and/or share the new filesystem as appropriate.  We provide a
 871          * verbose error message to let the user know that their filesystem was
 872          * in fact created, even if we failed to mount or share it.
 873          */
 874         if (!nomount && canmount == ZFS_CANMOUNT_ON) {
 875                 if (zfs_mount(zhp, NULL, 0) != 0) {
 876                         (void) fprintf(stderr, gettext("filesystem "
 877                             "successfully created, but not mounted\n"));
 878                         ret = 1;
 879                 } else if (zfs_share(zhp) != 0) {
 880                         (void) fprintf(stderr, gettext("filesystem "
 881                             "successfully created, but not shared\n"));
 882                         ret = 1;
 883                 }
 884         }
 885
 886 error:
 887         if (zhp)
 888                 zfs_close(zhp);
 889         nvlist_free(props);
 890         return (ret);
 891 badusage:
 892         nvlist_free(props);
 893         usage(B_FALSE);
 894         return (2);
 895 }
 896
 897 /*
 898  * zfs destroy [-rRf] <fs, vol>
 899  * zfs destroy [-rRd] <snap>
 900  *
 901  *      -r      Recursively destroy all children
 902  *      -R      Recursively destroy all dependents, including clones
 903  *      -f      Force unmounting of any dependents
 904  *      -d      If we can't destroy now, mark for deferred destruction
 905  *
 906  * Destroys the given dataset.  By default, it will unmount any filesystems,
 907  * and refuse to destroy a dataset that has any dependents.  A dependent can
 908  * either be a child, or a clone of a child.
 909  */
 910 typedef struct destroy_cbdata {
 911         boolean_t       cb_first;
 912         boolean_t       cb_force;
 913         boolean_t       cb_recurse;
 914         boolean_t       cb_error;
 915         boolean_t       cb_doclones;
 916         zfs_handle_t    *cb_target;
 917         boolean_t       cb_defer_destroy;
 918         boolean_t       cb_verbose;
 919         boolean_t       cb_parsable;
 920         boolean_t       cb_dryrun;
 921         nvlist_t        *cb_nvl;
 922         nvlist_t        *cb_batchedsnaps;
 923
 924         /* first snap in contiguous run */
 925         char            *cb_firstsnap;
 926         /* previous snap in contiguous run */
 927         char            *cb_prevsnap;
 928         int64_t         cb_snapused;
 929         char            *cb_snapspec;
 930 } destroy_cbdata_t;
 931
 932 /*
 933  * Check for any dependents based on the '-r' or '-R' flags.
 934  */
 935 static int
 936 destroy_check_dependent(zfs_handle_t *zhp, void *data)
 937 {
 938         destroy_cbdata_t *cbp = data;
 939         const char *tname = zfs_get_name(cbp->cb_target);
 940         const char *name = zfs_get_name(zhp);
 941
 942         if (strncmp(tname, name, strlen(tname)) == 0 &&
 943             (name[strlen(tname)] == '/' || name[strlen(tname)] == '@')) {
 944                 /*
 945                  * This is a direct descendant, not a clone somewhere else in
 946                  * the hierarchy.
 947                  */
 948                 if (cbp->cb_recurse)
 949                         goto out;
 950
 951                 if (cbp->cb_first) {
 952                         (void) fprintf(stderr, gettext("cannot destroy '%s': "
 953                             "%s has children\n"),
 954                             zfs_get_name(cbp->cb_target),
 955                             zfs_type_to_name(zfs_get_type(cbp->cb_target)));
 956                         (void) fprintf(stderr, gettext("use '-r' to destroy "
 957                             "the following datasets:\n"));
 958                         cbp->cb_first = B_FALSE;
 959                         cbp->cb_error = B_TRUE;
 960                 }
 961
 962                 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
 963         } else {
 964                 /*
 965                  * This is a clone.  We only want to report this if the '-r'
 966                  * wasn't specified, or the target is a snapshot.
 967                  */
 968                 if (!cbp->cb_recurse &&
 969                     zfs_get_type(cbp->cb_target) != ZFS_TYPE_SNAPSHOT)
 970                         goto out;
 971
 972                 if (cbp->cb_first) {
 973                         (void) fprintf(stderr, gettext("cannot destroy '%s': "
 974                             "%s has dependent clones\n"),
 975                             zfs_get_name(cbp->cb_target),
 976                             zfs_type_to_name(zfs_get_type(cbp->cb_target)));
 977                         (void) fprintf(stderr, gettext("use '-R' to destroy "
 978                             "the following datasets:\n"));
 979                         cbp->cb_first = B_FALSE;
 980                         cbp->cb_error = B_TRUE;
 981                         cbp->cb_dryrun = B_TRUE;
 982                 }
 983
 984                 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
 985         }
 986
 987 out:
 988         zfs_close(zhp);
 989         return (0);
 990 }
 991
 992 static int
 993 destroy_callback(zfs_handle_t *zhp, void *data)
 994 {
 995         destroy_cbdata_t *cb = data;
 996         const char *name = zfs_get_name(zhp);
 997
 998         if (cb->cb_verbose) {
 999                 if (cb->cb_parsable) {
1000                         (void) printf("destroy\t%s\n", name);
1001                 } else if (cb->cb_dryrun) {
1002                         (void) printf(gettext("would destroy %s\n"),
1003                             name);
1004                 } else {
1005                         (void) printf(gettext("will destroy %s\n"),
1006                             name);
1007                 }
1008         }
1009
1010         /*
1011          * Ignore pools (which we've already flagged as an error before getting
1012          * here).
1013          */
1014         if (strchr(zfs_get_name(zhp), '/') == NULL &&
1015             zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
1016                 zfs_close(zhp);
1017                 return (0);
1018         }
1019         if (cb->cb_dryrun) {
1020                 zfs_close(zhp);
1021                 return (0);
1022         }
1023
1024         /*
1025          * We batch up all contiguous snapshots (even of different
1026          * filesystems) and destroy them with one ioctl.  We can't
1027          * simply do all snap deletions and then all fs deletions,
1028          * because we must delete a clone before its origin.
1029          */
1030         if (zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT) {
1031                 fnvlist_add_boolean(cb->cb_batchedsnaps, name);
1032         } else {
1033                 int error = zfs_destroy_snaps_nvl(g_zfs,
1034                     cb->cb_batchedsnaps, B_FALSE);
1035                 fnvlist_free(cb->cb_batchedsnaps);
1036                 cb->cb_batchedsnaps = fnvlist_alloc();
1037
1038                 if (error != 0 ||
1039                     zfs_unmount(zhp, NULL, cb->cb_force ? MS_FORCE : 0) != 0 ||
1040                     zfs_destroy(zhp, cb->cb_defer_destroy) != 0) {
1041                         zfs_close(zhp);
1042                         return (-1);
1043                 }
1044         }
1045
1046         zfs_close(zhp);
1047         return (0);
1048 }
1049
1050 static int
1051 destroy_print_cb(zfs_handle_t *zhp, void *arg)
1052 {
1053         destroy_cbdata_t *cb = arg;
1054         const char *name = zfs_get_name(zhp);
1055         int err = 0;
1056
1057         if (nvlist_exists(cb->cb_nvl, name)) {
1058                 if (cb->cb_firstsnap == NULL)
1059                         cb->cb_firstsnap = strdup(name);
1060                 if (cb->cb_prevsnap != NULL)
1061                         free(cb->cb_prevsnap);
1062                 /* this snap continues the current range */
1063                 cb->cb_prevsnap = strdup(name);
1064                 if (cb->cb_firstsnap == NULL || cb->cb_prevsnap == NULL)
1065                         nomem();
1066                 if (cb->cb_verbose) {
1067                         if (cb->cb_parsable) {
1068                                 (void) printf("destroy\t%s\n", name);
1069                         } else if (cb->cb_dryrun) {
1070                                 (void) printf(gettext("would destroy %s\n"),
1071                                     name);
1072                         } else {
1073                                 (void) printf(gettext("will destroy %s\n"),
1074                                     name);
1075                         }
1076                 }
1077         } else if (cb->cb_firstsnap != NULL) {
1078                 /* end of this range */
1079                 uint64_t used = 0;
1080                 err = lzc_snaprange_space(cb->cb_firstsnap,
1081                     cb->cb_prevsnap, &used);
1082                 cb->cb_snapused += used;
1083                 free(cb->cb_firstsnap);
1084                 cb->cb_firstsnap = NULL;
1085                 free(cb->cb_prevsnap);
1086                 cb->cb_prevsnap = NULL;
1087         }
1088         zfs_close(zhp);
1089         return (err);
1090 }
1091
1092 static int
1093 destroy_print_snapshots(zfs_handle_t *fs_zhp, destroy_cbdata_t *cb)
1094 {
1095         int err = 0;
1096         assert(cb->cb_firstsnap == NULL);
1097         assert(cb->cb_prevsnap == NULL);
1098         err = zfs_iter_snapshots_sorted(fs_zhp, destroy_print_cb, cb);
1099         if (cb->cb_firstsnap != NULL) {
1100                 uint64_t used = 0;
1101                 if (err == 0) {
1102                         err = lzc_snaprange_space(cb->cb_firstsnap,
1103                             cb->cb_prevsnap, &used);
1104                 }
1105                 cb->cb_snapused += used;
1106                 free(cb->cb_firstsnap);
1107                 cb->cb_firstsnap = NULL;
1108                 free(cb->cb_prevsnap);
1109                 cb->cb_prevsnap = NULL;
1110         }
1111         return (err);
1112 }
1113
1114 static int
1115 snapshot_to_nvl_cb(zfs_handle_t *zhp, void *arg)
1116 {
1117         destroy_cbdata_t *cb = arg;
1118         int err = 0;
1119
1120         /* Check for clones. */
1121         if (!cb->cb_doclones && !cb->cb_defer_destroy) {
1122                 cb->cb_target = zhp;
1123                 cb->cb_first = B_TRUE;
1124                 err = zfs_iter_dependents(zhp, B_TRUE,
1125                     destroy_check_dependent, cb);
1126         }
1127
1128         if (err == 0) {
1129                 if (nvlist_add_boolean(cb->cb_nvl, zfs_get_name(zhp)))
1130                         nomem();
1131         }
1132         zfs_close(zhp);
1133         return (err);
1134 }
1135
1136 static int
1137 gather_snapshots(zfs_handle_t *zhp, void *arg)
1138 {
1139         destroy_cbdata_t *cb = arg;
1140         int err = 0;
1141
1142         err = zfs_iter_snapspec(zhp, cb->cb_snapspec, snapshot_to_nvl_cb, cb);
1143         if (err == ENOENT)
1144                 err = 0;
1145         if (err != 0)
1146                 goto out;
1147
1148         if (cb->cb_verbose) {
1149                 err = destroy_print_snapshots(zhp, cb);
1150                 if (err != 0)
1151                         goto out;
1152         }
1153
1154         if (cb->cb_recurse)
1155                 err = zfs_iter_filesystems(zhp, gather_snapshots, cb);
1156
1157 out:
1158         zfs_close(zhp);
1159         return (err);
1160 }
1161
1162 static int
1163 destroy_clones(destroy_cbdata_t *cb)
1164 {
1165         nvpair_t *pair;
1166         for (pair = nvlist_next_nvpair(cb->cb_nvl, NULL);
1167             pair != NULL;
1168             pair = nvlist_next_nvpair(cb->cb_nvl, pair)) {
1169                 zfs_handle_t *zhp = zfs_open(g_zfs, nvpair_name(pair),
1170                     ZFS_TYPE_SNAPSHOT);
1171                 if (zhp != NULL) {
1172                         boolean_t defer = cb->cb_defer_destroy;
1173                         int err = 0;
1174
1175                         /*
1176                          * We can't defer destroy non-snapshots, so set it to
1177                          * false while destroying the clones.
1178                          */
1179                         cb->cb_defer_destroy = B_FALSE;
1180                         err = zfs_iter_dependents(zhp, B_FALSE,
1181                             destroy_callback, cb);
1182                         cb->cb_defer_destroy = defer;
1183                         zfs_close(zhp);
1184                         if (err != 0)
1185                                 return (err);
1186                 }
1187         }
1188         return (0);
1189 }
1190
1191 static int
1192 zfs_do_destroy(int argc, char **argv)
1193 {
1194         destroy_cbdata_t cb = { 0 };
1195         int rv = 0;
1196         int err = 0;
1197         int c;
1198         zfs_handle_t *zhp = NULL;
1199         char *at;
1200         zfs_type_t type = ZFS_TYPE_DATASET;
1201
1202         /* check options */
1203         while ((c = getopt(argc, argv, "vpndfrR")) != -1) {
1204                 switch (c) {
1205                 case 'v':
1206                         cb.cb_verbose = B_TRUE;
1207                         break;
1208                 case 'p':
1209                         cb.cb_verbose = B_TRUE;
1210                         cb.cb_parsable = B_TRUE;
1211                         break;
1212                 case 'n':
1213                         cb.cb_dryrun = B_TRUE;
1214                         break;
1215                 case 'd':
1216                         cb.cb_defer_destroy = B_TRUE;
1217                         type = ZFS_TYPE_SNAPSHOT;
1218                         break;
1219                 case 'f':
1220                         cb.cb_force = B_TRUE;
1221                         break;
1222                 case 'r':
1223                         cb.cb_recurse = B_TRUE;
1224                         break;
1225                 case 'R':
1226                         cb.cb_recurse = B_TRUE;
1227                         cb.cb_doclones = B_TRUE;
1228                         break;
1229                 case '?':
1230                 default:
1231                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1232                             optopt);
1233                         usage(B_FALSE);
1234                 }
1235         }
1236
1237         argc -= optind;
1238         argv += optind;
1239
1240         /* check number of arguments */
1241         if (argc == 0) {
1242                 (void) fprintf(stderr, gettext("missing dataset argument\n"));
1243                 usage(B_FALSE);
1244         }
1245         if (argc > 1) {
1246                 (void) fprintf(stderr, gettext("too many arguments\n"));
1247                 usage(B_FALSE);
1248         }
1249
1250         at = strchr(argv[0], '@');
1251         if (at != NULL) {
1252
1253                 /* Build the list of snaps to destroy in cb_nvl. */
1254                 cb.cb_nvl = fnvlist_alloc();
1255
1256                 *at = '\0';
1257                 zhp = zfs_open(g_zfs, argv[0],
1258                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
1259                 if (zhp == NULL)
1260                         return (1);
1261
1262                 cb.cb_snapspec = at + 1;
1263                 if (gather_snapshots(zfs_handle_dup(zhp), &cb) != 0 ||
1264                     cb.cb_error) {
1265                         rv = 1;
1266                         goto out;
1267                 }
1268
1269                 if (nvlist_empty(cb.cb_nvl)) {
1270                         (void) fprintf(stderr, gettext("could not find any "
1271                             "snapshots to destroy; check snapshot names.\n"));
1272                         rv = 1;
1273                         goto out;
1274                 }
1275
1276                 if (cb.cb_verbose) {
1277                         char buf[16];
1278                         zfs_nicenum(cb.cb_snapused, buf, sizeof (buf));
1279                         if (cb.cb_parsable) {
1280                                 (void) printf("reclaim\t%llu\n",
1281                                     cb.cb_snapused);
1282                         } else if (cb.cb_dryrun) {
1283                                 (void) printf(gettext("would reclaim %s\n"),
1284                                     buf);
1285                         } else {
1286                                 (void) printf(gettext("will reclaim %s\n"),
1287                                     buf);
1288                         }
1289                 }
1290
1291                 if (!cb.cb_dryrun) {
1292                         if (cb.cb_doclones) {
1293                                 cb.cb_batchedsnaps = fnvlist_alloc();
1294                                 err = destroy_clones(&cb);
1295                                 if (err == 0) {
1296                                         err = zfs_destroy_snaps_nvl(g_zfs,
1297                                             cb.cb_batchedsnaps, B_FALSE);
1298                                 }
1299                                 if (err != 0) {
1300                                         rv = 1;
1301                                         goto out;
1302                                 }
1303                         }
1304                         if (err == 0) {
1305                                 err = zfs_destroy_snaps_nvl(g_zfs, cb.cb_nvl,
1306                                     cb.cb_defer_destroy);
1307                         }
1308                 }
1309
1310                 if (err != 0)
1311                         rv = 1;
1312         } else {
1313                 /* Open the given dataset */
1314                 if ((zhp = zfs_open(g_zfs, argv[0], type)) == NULL)
1315                         return (1);
1316
1317                 cb.cb_target = zhp;
1318
1319                 /*
1320                  * Perform an explicit check for pools before going any further.
1321                  */
1322                 if (!cb.cb_recurse && strchr(zfs_get_name(zhp), '/') == NULL &&
1323                     zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
1324                         (void) fprintf(stderr, gettext("cannot destroy '%s': "
1325                             "operation does not apply to pools\n"),
1326                             zfs_get_name(zhp));
1327                         (void) fprintf(stderr, gettext("use 'zfs destroy -r "
1328                             "%s' to destroy all datasets in the pool\n"),
1329                             zfs_get_name(zhp));
1330                         (void) fprintf(stderr, gettext("use 'zpool destroy %s' "
1331                             "to destroy the pool itself\n"), zfs_get_name(zhp));
1332                         rv = 1;
1333                         goto out;
1334                 }
1335
1336                 /*
1337                  * Check for any dependents and/or clones.
1338                  */
1339                 cb.cb_first = B_TRUE;
1340                 if (!cb.cb_doclones &&
1341                     zfs_iter_dependents(zhp, B_TRUE, destroy_check_dependent,
1342                     &cb) != 0) {
1343                         rv = 1;
1344                         goto out;
1345                 }
1346
1347                 if (cb.cb_error) {
1348                         rv = 1;
1349                         goto out;
1350                 }
1351
1352                 cb.cb_batchedsnaps = fnvlist_alloc();
1353                 if (zfs_iter_dependents(zhp, B_FALSE, destroy_callback,
1354                     &cb) != 0) {
1355                         rv = 1;
1356                         goto out;
1357                 }
1358
1359                 /*
1360                  * Do the real thing.  The callback will close the
1361                  * handle regardless of whether it succeeds or not.
1362                  */
1363                 err = destroy_callback(zhp, &cb);
1364                 zhp = NULL;
1365                 if (err == 0) {
1366                         err = zfs_destroy_snaps_nvl(g_zfs,
1367                             cb.cb_batchedsnaps, cb.cb_defer_destroy);
1368                 }
1369                 if (err != 0)
1370                         rv = 1;
1371         }
1372
1373 out:
1374         fnvlist_free(cb.cb_batchedsnaps);
1375         fnvlist_free(cb.cb_nvl);
1376         if (zhp != NULL)
1377                 zfs_close(zhp);
1378         return (rv);
1379 }
1380
1381 static boolean_t
1382 is_recvd_column(zprop_get_cbdata_t *cbp)
1383 {
1384         int i;
1385         zfs_get_column_t col;
1386
1387         for (i = 0; i < ZFS_GET_NCOLS &&
1388             (col = cbp->cb_columns[i]) != GET_COL_NONE; i++)
1389                 if (col == GET_COL_RECVD)
1390                         return (B_TRUE);
1391         return (B_FALSE);
1392 }
1393
1394 /*
1395  * zfs get [-rHp] [-o all | field[,field]...] [-s source[,source]...]
1396  *      < all | property[,property]... > < fs | snap | vol > ...
1397  *
1398  *      -r      recurse over any child datasets
1399  *      -H      scripted mode.  Headers are stripped, and fields are separated
1400  *              by tabs instead of spaces.
1401  *      -o      Set of fields to display.  One of "name,property,value,
1402  *              received,source". Default is "name,property,value,source".
1403  *              "all" is an alias for all five.
1404  *      -s      Set of sources to allow.  One of
1405  *              "local,default,inherited,received,temporary,none".  Default is
1406  *              all six.
1407  *      -p      Display values in parsable (literal) format.
1408  *
1409  *  Prints properties for the given datasets.  The user can control which
1410  *  columns to display as well as which property types to allow.
1411  */
1412
1413 /*
1414  * Invoked to display the properties for a single dataset.
1415  */
1416 static int
1417 get_callback(zfs_handle_t *zhp, void *data)
1418 {
1419         char buf[ZFS_MAXPROPLEN];
1420         char rbuf[ZFS_MAXPROPLEN];
1421         zprop_source_t sourcetype;
1422         char source[ZFS_MAXNAMELEN];
1423         zprop_get_cbdata_t *cbp = data;
1424         nvlist_t *user_props = zfs_get_user_props(zhp);
1425         zprop_list_t *pl = cbp->cb_proplist;
1426         nvlist_t *propval;
1427         char *strval;
1428         char *sourceval;
1429         boolean_t received = is_recvd_column(cbp);
1430
1431         for (; pl != NULL; pl = pl->pl_next) {
1432                 char *recvdval = NULL;
1433                 /*
1434                  * Skip the special fake placeholder.  This will also skip over
1435                  * the name property when 'all' is specified.
1436                  */
1437                 if (pl->pl_prop == ZFS_PROP_NAME &&
1438                     pl == cbp->cb_proplist)
1439                         continue;
1440
1441                 if (pl->pl_prop != ZPROP_INVAL) {
1442                         if (zfs_prop_get(zhp, pl->pl_prop, buf,
1443                             sizeof (buf), &sourcetype, source,
1444                             sizeof (source),
1445                             cbp->cb_literal) != 0) {
1446                                 if (pl->pl_all)
1447                                         continue;
1448                                 if (!zfs_prop_valid_for_type(pl->pl_prop,
1449                                     ZFS_TYPE_DATASET)) {
1450                                         (void) fprintf(stderr,
1451                                             gettext("No such property '%s'\n"),
1452                                             zfs_prop_to_name(pl->pl_prop));
1453                                         continue;
1454                                 }
1455                                 sourcetype = ZPROP_SRC_NONE;
1456                                 (void) strlcpy(buf, "-", sizeof (buf));
1457                         }
1458
1459                         if (received && (zfs_prop_get_recvd(zhp,
1460                             zfs_prop_to_name(pl->pl_prop), rbuf, sizeof (rbuf),
1461                             cbp->cb_literal) == 0))
1462                                 recvdval = rbuf;
1463
1464                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1465                             zfs_prop_to_name(pl->pl_prop),
1466                             buf, sourcetype, source, recvdval);
1467                 } else if (zfs_prop_userquota(pl->pl_user_prop)) {
1468                         sourcetype = ZPROP_SRC_LOCAL;
1469
1470                         if (zfs_prop_get_userquota(zhp, pl->pl_user_prop,
1471                             buf, sizeof (buf), cbp->cb_literal) != 0) {
1472                                 sourcetype = ZPROP_SRC_NONE;
1473                                 (void) strlcpy(buf, "-", sizeof (buf));
1474                         }
1475
1476                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1477                             pl->pl_user_prop, buf, sourcetype, source, NULL);
1478                 } else if (zfs_prop_written(pl->pl_user_prop)) {
1479                         sourcetype = ZPROP_SRC_LOCAL;
1480
1481                         if (zfs_prop_get_written(zhp, pl->pl_user_prop,
1482                             buf, sizeof (buf), cbp->cb_literal) != 0) {
1483                                 sourcetype = ZPROP_SRC_NONE;
1484                                 (void) strlcpy(buf, "-", sizeof (buf));
1485                         }
1486
1487                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1488                             pl->pl_user_prop, buf, sourcetype, source, NULL);
1489                 } else {
1490                         if (nvlist_lookup_nvlist(user_props,
1491                             pl->pl_user_prop, &propval) != 0) {
1492                                 if (pl->pl_all)
1493                                         continue;
1494                                 sourcetype = ZPROP_SRC_NONE;
1495                                 strval = "-";
1496                         } else {
1497                                 verify(nvlist_lookup_string(propval,
1498                                     ZPROP_VALUE, &strval) == 0);
1499                                 verify(nvlist_lookup_string(propval,
1500                                     ZPROP_SOURCE, &sourceval) == 0);
1501
1502                                 if (strcmp(sourceval,
1503                                     zfs_get_name(zhp)) == 0) {
1504                                         sourcetype = ZPROP_SRC_LOCAL;
1505                                 } else if (strcmp(sourceval,
1506                                     ZPROP_SOURCE_VAL_RECVD) == 0) {
1507                                         sourcetype = ZPROP_SRC_RECEIVED;
1508                                 } else {
1509                                         sourcetype = ZPROP_SRC_INHERITED;
1510                                         (void) strlcpy(source,
1511                                             sourceval, sizeof (source));
1512                                 }
1513                         }
1514
1515                         if (received && (zfs_prop_get_recvd(zhp,
1516                             pl->pl_user_prop, rbuf, sizeof (rbuf),
1517                             cbp->cb_literal) == 0))
1518                                 recvdval = rbuf;
1519
1520                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1521                             pl->pl_user_prop, strval, sourcetype,
1522                             source, recvdval);
1523                 }
1524         }
1525
1526         return (0);
1527 }
1528
1529 static int
1530 zfs_do_get(int argc, char **argv)
1531 {
1532         zprop_get_cbdata_t cb = { 0 };
1533         int i, c, flags = ZFS_ITER_ARGS_CAN_BE_PATHS;
1534         int types = ZFS_TYPE_DATASET;
1535         char *value, *fields;
1536         int ret = 0;
1537         int limit = 0;
1538         zprop_list_t fake_name = { 0 };
1539
1540         /*
1541          * Set up default columns and sources.
1542          */
1543         cb.cb_sources = ZPROP_SRC_ALL;
1544         cb.cb_columns[0] = GET_COL_NAME;
1545         cb.cb_columns[1] = GET_COL_PROPERTY;
1546         cb.cb_columns[2] = GET_COL_VALUE;
1547         cb.cb_columns[3] = GET_COL_SOURCE;
1548         cb.cb_type = ZFS_TYPE_DATASET;
1549
1550         /* check options */
1551         while ((c = getopt(argc, argv, ":d:o:s:rt:Hp")) != -1) {
1552                 switch (c) {
1553                 case 'p':
1554                         cb.cb_literal = B_TRUE;
1555                         break;
1556                 case 'd':
1557                         limit = parse_depth(optarg, &flags);
1558                         break;
1559                 case 'r':
1560                         flags |= ZFS_ITER_RECURSE;
1561                         break;
1562                 case 'H':
1563                         cb.cb_scripted = B_TRUE;
1564                         break;
1565                 case ':':
1566                         (void) fprintf(stderr, gettext("missing argument for "
1567                             "'%c' option\n"), optopt);
1568                         usage(B_FALSE);
1569                         break;
1570                 case 'o':
1571                         /*
1572                          * Process the set of columns to display.  We zero out
1573                          * the structure to give us a blank slate.
1574                          */
1575                         bzero(&cb.cb_columns, sizeof (cb.cb_columns));
1576                         i = 0;
1577                         while (*optarg != '\0') {
1578                                 static char *col_subopts[] =
1579                                     { "name", "property", "value", "received",
1580                                     "source", "all", NULL };
1581
1582                                 if (i == ZFS_GET_NCOLS) {
1583                                         (void) fprintf(stderr, gettext("too "
1584                                             "many fields given to -o "
1585                                             "option\n"));
1586                                         usage(B_FALSE);
1587                                 }
1588
1589                                 switch (getsubopt(&optarg, col_subopts,
1590                                     &value)) {
1591                                 case 0:
1592                                         cb.cb_columns[i++] = GET_COL_NAME;
1593                                         break;
1594                                 case 1:
1595                                         cb.cb_columns[i++] = GET_COL_PROPERTY;
1596                                         break;
1597                                 case 2:
1598                                         cb.cb_columns[i++] = GET_COL_VALUE;
1599                                         break;
1600                                 case 3:
1601                                         cb.cb_columns[i++] = GET_COL_RECVD;
1602                                         flags |= ZFS_ITER_RECVD_PROPS;
1603                                         break;
1604                                 case 4:
1605                                         cb.cb_columns[i++] = GET_COL_SOURCE;
1606                                         break;
1607                                 case 5:
1608                                         if (i > 0) {
1609                                                 (void) fprintf(stderr,
1610                                                     gettext("\"all\" conflicts "
1611                                                     "with specific fields "
1612                                                     "given to -o option\n"));
1613                                                 usage(B_FALSE);
1614                                         }
1615                                         cb.cb_columns[0] = GET_COL_NAME;
1616                                         cb.cb_columns[1] = GET_COL_PROPERTY;
1617                                         cb.cb_columns[2] = GET_COL_VALUE;
1618                                         cb.cb_columns[3] = GET_COL_RECVD;
1619                                         cb.cb_columns[4] = GET_COL_SOURCE;
1620                                         flags |= ZFS_ITER_RECVD_PROPS;
1621                                         i = ZFS_GET_NCOLS;
1622                                         break;
1623                                 default:
1624                                         (void) fprintf(stderr,
1625                                             gettext("invalid column name "
1626                                             "'%s'\n"), value);
1627                                         usage(B_FALSE);
1628                                 }
1629                         }
1630                         break;
1631
1632                 case 's':
1633                         cb.cb_sources = 0;
1634                         while (*optarg != '\0') {
1635                                 static char *source_subopts[] = {
1636                                         "local", "default", "inherited",
1637                                         "received", "temporary", "none",
1638                                         NULL };
1639
1640                                 switch (getsubopt(&optarg, source_subopts,
1641                                     &value)) {
1642                                 case 0:
1643                                         cb.cb_sources |= ZPROP_SRC_LOCAL;
1644                                         break;
1645                                 case 1:
1646                                         cb.cb_sources |= ZPROP_SRC_DEFAULT;
1647                                         break;
1648                                 case 2:
1649                                         cb.cb_sources |= ZPROP_SRC_INHERITED;
1650                                         break;
1651                                 case 3:
1652                                         cb.cb_sources |= ZPROP_SRC_RECEIVED;
1653                                         break;
1654                                 case 4:
1655                                         cb.cb_sources |= ZPROP_SRC_TEMPORARY;
1656                                         break;
1657                                 case 5:
1658                                         cb.cb_sources |= ZPROP_SRC_NONE;
1659                                         break;
1660                                 default:
1661                                         (void) fprintf(stderr,
1662                                             gettext("invalid source "
1663                                             "'%s'\n"), value);
1664                                         usage(B_FALSE);
1665                                 }
1666                         }
1667                         break;
1668
1669                 case 't':
1670                         types = 0;
1671                         flags &= ~ZFS_ITER_PROP_LISTSNAPS;
1672                         while (*optarg != '\0') {
1673                                 static char *type_subopts[] = { "filesystem",
1674                                     "volume", "snapshot", "all", NULL };
1675
1676                                 switch (getsubopt(&optarg, type_subopts,
1677                                     &value)) {
1678                                 case 0:
1679                                         types |= ZFS_TYPE_FILESYSTEM;
1680                                         break;
1681                                 case 1:
1682                                         types |= ZFS_TYPE_VOLUME;
1683                                         break;
1684                                 case 2:
1685                                         types |= ZFS_TYPE_SNAPSHOT;
1686                                         break;
1687                                 case 3:
1688                                         types = ZFS_TYPE_DATASET;
1689                                         break;
1690
1691                                 default:
1692                                         (void) fprintf(stderr,
1693                                             gettext("invalid type '%s'\n"),
1694                                             value);
1695                                         usage(B_FALSE);
1696                                 }
1697                         }
1698                         break;
1699
1700                 case '?':
1701                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1702                             optopt);
1703                         usage(B_FALSE);
1704                 }
1705         }
1706
1707         argc -= optind;
1708         argv += optind;
1709
1710         if (argc < 1) {
1711                 (void) fprintf(stderr, gettext("missing property "
1712                     "argument\n"));
1713                 usage(B_FALSE);
1714         }
1715
1716         fields = argv[0];
1717
1718         if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
1719             != 0)
1720                 usage(B_FALSE);
1721
1722         argc--;
1723         argv++;
1724
1725         /*
1726          * As part of zfs_expand_proplist(), we keep track of the maximum column
1727          * width for each property.  For the 'NAME' (and 'SOURCE') columns, we
1728          * need to know the maximum name length.  However, the user likely did
1729          * not specify 'name' as one of the properties to fetch, so we need to
1730          * make sure we always include at least this property for
1731          * print_get_headers() to work properly.
1732          */
1733         if (cb.cb_proplist != NULL) {
1734                 fake_name.pl_prop = ZFS_PROP_NAME;
1735                 fake_name.pl_width = strlen(gettext("NAME"));
1736                 fake_name.pl_next = cb.cb_proplist;
1737                 cb.cb_proplist = &fake_name;
1738         }
1739
1740         cb.cb_first = B_TRUE;
1741
1742         /* run for each object */
1743         ret = zfs_for_each(argc, argv, flags, types, NULL,
1744             &cb.cb_proplist, limit, get_callback, &cb);
1745
1746         if (cb.cb_proplist == &fake_name)
1747                 zprop_free_list(fake_name.pl_next);
1748         else
1749                 zprop_free_list(cb.cb_proplist);
1750
1751         return (ret);
1752 }
1753
1754 /*
1755  * inherit [-rS] <property> <fs|vol> ...
1756  *
1757  *      -r      Recurse over all children
1758  *      -S      Revert to received value, if any
1759  *
1760  * For each dataset specified on the command line, inherit the given property
1761  * from its parent.  Inheriting a property at the pool level will cause it to
1762  * use the default value.  The '-r' flag will recurse over all children, and is
1763  * useful for setting a property on a hierarchy-wide basis, regardless of any
1764  * local modifications for each dataset.
1765  */
1766
1767 typedef struct inherit_cbdata {
1768         const char *cb_propname;
1769         boolean_t cb_received;
1770 } inherit_cbdata_t;
1771
1772 static int
1773 inherit_recurse_cb(zfs_handle_t *zhp, void *data)
1774 {
1775         inherit_cbdata_t *cb = data;
1776         zfs_prop_t prop = zfs_name_to_prop(cb->cb_propname);
1777
1778         /*
1779          * If we're doing it recursively, then ignore properties that
1780          * are not valid for this type of dataset.
1781          */
1782         if (prop != ZPROP_INVAL &&
1783             !zfs_prop_valid_for_type(prop, zfs_get_type(zhp)))
1784                 return (0);
1785
1786         return (zfs_prop_inherit(zhp, cb->cb_propname, cb->cb_received) != 0);
1787 }
1788
1789 static int
1790 inherit_cb(zfs_handle_t *zhp, void *data)
1791 {
1792         inherit_cbdata_t *cb = data;
1793
1794         return (zfs_prop_inherit(zhp, cb->cb_propname, cb->cb_received) != 0);
1795 }
1796
1797 static int
1798 zfs_do_inherit(int argc, char **argv)
1799 {
1800         int c;
1801         zfs_prop_t prop;
1802         inherit_cbdata_t cb = { 0 };
1803         char *propname;
1804         int ret = 0;
1805         int flags = 0;
1806         boolean_t received = B_FALSE;
1807
1808         /* check options */
1809         while ((c = getopt(argc, argv, "rS")) != -1) {
1810                 switch (c) {
1811                 case 'r':
1812                         flags |= ZFS_ITER_RECURSE;
1813                         break;
1814                 case 'S':
1815                         received = B_TRUE;
1816                         break;
1817                 case '?':
1818                 default:
1819                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1820                             optopt);
1821                         usage(B_FALSE);
1822                 }
1823         }
1824
1825         argc -= optind;
1826         argv += optind;
1827
1828         /* check number of arguments */
1829         if (argc < 1) {
1830                 (void) fprintf(stderr, gettext("missing property argument\n"));
1831                 usage(B_FALSE);
1832         }
1833         if (argc < 2) {
1834                 (void) fprintf(stderr, gettext("missing dataset argument\n"));
1835                 usage(B_FALSE);
1836         }
1837
1838         propname = argv[0];
1839         argc--;
1840         argv++;
1841
1842         if ((prop = zfs_name_to_prop(propname)) != ZPROP_INVAL) {
1843                 if (zfs_prop_readonly(prop)) {
1844                         (void) fprintf(stderr, gettext(
1845                             "%s property is read-only\n"),
1846                             propname);
1847                         return (1);
1848                 }
1849                 if (!zfs_prop_inheritable(prop) && !received) {
1850                         (void) fprintf(stderr, gettext("'%s' property cannot "
1851                             "be inherited\n"), propname);
1852                         if (prop == ZFS_PROP_QUOTA ||
1853                             prop == ZFS_PROP_RESERVATION ||
1854                             prop == ZFS_PROP_REFQUOTA ||
1855                             prop == ZFS_PROP_REFRESERVATION)
1856                                 (void) fprintf(stderr, gettext("use 'zfs set "
1857                                     "%s=none' to clear\n"), propname);
1858                         return (1);
1859                 }
1860                 if (received && (prop == ZFS_PROP_VOLSIZE ||
1861                     prop == ZFS_PROP_VERSION)) {
1862                         (void) fprintf(stderr, gettext("'%s' property cannot "
1863                             "be reverted to a received value\n"), propname);
1864                         return (1);
1865                 }
1866         } else if (!zfs_prop_user(propname)) {
1867                 (void) fprintf(stderr, gettext("invalid property '%s'\n"),
1868                     propname);
1869                 usage(B_FALSE);
1870         }
1871
1872         cb.cb_propname = propname;
1873         cb.cb_received = received;
1874
1875         if (flags & ZFS_ITER_RECURSE) {
1876                 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
1877                     NULL, NULL, 0, inherit_recurse_cb, &cb);
1878         } else {
1879                 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
1880                     NULL, NULL, 0, inherit_cb, &cb);
1881         }
1882
1883         return (ret);
1884 }
1885
1886 typedef struct upgrade_cbdata {
1887         uint64_t cb_numupgraded;
1888         uint64_t cb_numsamegraded;
1889         uint64_t cb_numfailed;
1890         uint64_t cb_version;
1891         boolean_t cb_newer;
1892         boolean_t cb_foundone;
1893         char cb_lastfs[ZFS_MAXNAMELEN];
1894 } upgrade_cbdata_t;
1895
1896 static int
1897 same_pool(zfs_handle_t *zhp, const char *name)
1898 {
1899         int len1 = strcspn(name, "/@");
1900         const char *zhname = zfs_get_name(zhp);
1901         int len2 = strcspn(zhname, "/@");
1902
1903         if (len1 != len2)
1904                 return (B_FALSE);
1905         return (strncmp(name, zhname, len1) == 0);
1906 }
1907
1908 static int
1909 upgrade_list_callback(zfs_handle_t *zhp, void *data)
1910 {
1911         upgrade_cbdata_t *cb = data;
1912         int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
1913
1914         /* list if it's old/new */
1915         if ((!cb->cb_newer && version < ZPL_VERSION) ||
1916             (cb->cb_newer && version > ZPL_VERSION)) {
1917                 char *str;
1918                 if (cb->cb_newer) {
1919                         str = gettext("The following filesystems are "
1920                             "formatted using a newer software version and\n"
1921                             "cannot be accessed on the current system.\n\n");
1922                 } else {
1923                         str = gettext("The following filesystems are "
1924                             "out of date, and can be upgraded.  After being\n"
1925                             "upgraded, these filesystems (and any 'zfs send' "
1926                             "streams generated from\n"
1927                             "subsequent snapshots) will no longer be "
1928                             "accessible by older software versions.\n\n");
1929                 }
1930
1931                 if (!cb->cb_foundone) {
1932                         (void) puts(str);
1933                         (void) printf(gettext("VER  FILESYSTEM\n"));
1934                         (void) printf(gettext("---  ------------\n"));
1935                         cb->cb_foundone = B_TRUE;
1936                 }
1937
1938                 (void) printf("%2u   %s\n", version, zfs_get_name(zhp));
1939         }
1940
1941         return (0);
1942 }
1943
1944 static int
1945 upgrade_set_callback(zfs_handle_t *zhp, void *data)
1946 {
1947         upgrade_cbdata_t *cb = data;
1948         int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
1949         int needed_spa_version;
1950         int spa_version;
1951
1952         if (zfs_spa_version(zhp, &spa_version) < 0)
1953                 return (-1);
1954
1955         needed_spa_version = zfs_spa_version_map(cb->cb_version);
1956
1957         if (needed_spa_version < 0)
1958                 return (-1);
1959
1960         if (spa_version < needed_spa_version) {
1961                 /* can't upgrade */
1962                 (void) printf(gettext("%s: can not be "
1963                     "upgraded; the pool version needs to first "
1964                     "be upgraded\nto version %d\n\n"),
1965                     zfs_get_name(zhp), needed_spa_version);
1966                 cb->cb_numfailed++;
1967                 return (0);
1968         }
1969
1970         /* upgrade */
1971         if (version < cb->cb_version) {
1972                 char verstr[16];
1973                 (void) snprintf(verstr, sizeof (verstr),
1974                     "%llu", cb->cb_version);
1975                 if (cb->cb_lastfs[0] && !same_pool(zhp, cb->cb_lastfs)) {
1976                         /*
1977                          * If they did "zfs upgrade -a", then we could
1978                          * be doing ioctls to different pools.  We need
1979                          * to log this history once to each pool, and bypass
1980                          * the normal history logging that happens in main().
1981                          */
1982                         (void) zpool_log_history(g_zfs, history_str);
1983                         log_history = B_FALSE;
1984                 }
1985                 if (zfs_prop_set(zhp, "version", verstr) == 0)
1986                         cb->cb_numupgraded++;
1987                 else
1988                         cb->cb_numfailed++;
1989                 (void) strcpy(cb->cb_lastfs, zfs_get_name(zhp));
1990         } else if (version > cb->cb_version) {
1991                 /* can't downgrade */
1992                 (void) printf(gettext("%s: can not be downgraded; "
1993                     "it is already at version %u\n"),
1994                     zfs_get_name(zhp), version);
1995                 cb->cb_numfailed++;
1996         } else {
1997                 cb->cb_numsamegraded++;
1998         }
1999         return (0);
2000 }
2001
2002 /*
2003  * zfs upgrade
2004  * zfs upgrade -v
2005  * zfs upgrade [-r] [-V <version>] <-a | filesystem>
2006  */
2007 static int
2008 zfs_do_upgrade(int argc, char **argv)
2009 {
2010         boolean_t all = B_FALSE;
2011         boolean_t showversions = B_FALSE;
2012         int ret = 0;
2013         upgrade_cbdata_t cb = { 0 };
2014         char c;
2015         int flags = ZFS_ITER_ARGS_CAN_BE_PATHS;
2016
2017         /* check options */
2018         while ((c = getopt(argc, argv, "rvV:a")) != -1) {
2019                 switch (c) {
2020                 case 'r':
2021                         flags |= ZFS_ITER_RECURSE;
2022                         break;
2023                 case 'v':
2024                         showversions = B_TRUE;
2025                         break;
2026                 case 'V':
2027                         if (zfs_prop_string_to_index(ZFS_PROP_VERSION,
2028                             optarg, &cb.cb_version) != 0) {
2029                                 (void) fprintf(stderr,
2030                                     gettext("invalid version %s\n"), optarg);
2031                                 usage(B_FALSE);
2032                         }
2033                         break;
2034                 case 'a':
2035                         all = B_TRUE;
2036                         break;
2037                 case '?':
2038                 default:
2039                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2040                             optopt);
2041                         usage(B_FALSE);
2042                 }
2043         }
2044
2045         argc -= optind;
2046         argv += optind;
2047
2048         if ((!all && !argc) && ((flags & ZFS_ITER_RECURSE) | cb.cb_version))
2049                 usage(B_FALSE);
2050         if (showversions && (flags & ZFS_ITER_RECURSE || all ||
2051             cb.cb_version || argc))
2052                 usage(B_FALSE);
2053         if ((all || argc) && (showversions))
2054                 usage(B_FALSE);
2055         if (all && argc)
2056                 usage(B_FALSE);
2057
2058         if (showversions) {
2059                 /* Show info on available versions. */
2060                 (void) printf(gettext("The following filesystem versions are "
2061                     "supported:\n\n"));
2062                 (void) printf(gettext("VER  DESCRIPTION\n"));
2063                 (void) printf("---  -----------------------------------------"
2064                     "---------------\n");
2065                 (void) printf(gettext(" 1   Initial ZFS filesystem version\n"));
2066                 (void) printf(gettext(" 2   Enhanced directory entries\n"));
2067                 (void) printf(gettext(" 3   Case insensitive and filesystem "
2068                     "user identifier (FUID)\n"));
2069                 (void) printf(gettext(" 4   userquota, groupquota "
2070                     "properties\n"));
2071                 (void) printf(gettext(" 5   System attributes\n"));
2072                 (void) printf(gettext("\nFor more information on a particular "
2073                     "version, including supported releases,\n"));
2074                 (void) printf("see the ZFS Administration Guide.\n\n");
2075                 ret = 0;
2076         } else if (argc || all) {
2077                 /* Upgrade filesystems */
2078                 if (cb.cb_version == 0)
2079                         cb.cb_version = ZPL_VERSION;
2080                 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_FILESYSTEM,
2081                     NULL, NULL, 0, upgrade_set_callback, &cb);
2082                 (void) printf(gettext("%llu filesystems upgraded\n"),
2083                     cb.cb_numupgraded);
2084                 if (cb.cb_numsamegraded) {
2085                         (void) printf(gettext("%llu filesystems already at "
2086                             "this version\n"),
2087                             cb.cb_numsamegraded);
2088                 }
2089                 if (cb.cb_numfailed != 0)
2090                         ret = 1;
2091         } else {
2092                 /* List old-version filesytems */
2093                 boolean_t found;
2094                 (void) printf(gettext("This system is currently running "
2095                     "ZFS filesystem version %llu.\n\n"), ZPL_VERSION);
2096
2097                 flags |= ZFS_ITER_RECURSE;
2098                 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
2099                     NULL, NULL, 0, upgrade_list_callback, &cb);
2100
2101                 found = cb.cb_foundone;
2102                 cb.cb_foundone = B_FALSE;
2103                 cb.cb_newer = B_TRUE;
2104
2105                 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
2106                     NULL, NULL, 0, upgrade_list_callback, &cb);
2107
2108                 if (!cb.cb_foundone && !found) {
2109                         (void) printf(gettext("All filesystems are "
2110                             "formatted with the current version.\n"));
2111                 }
2112         }
2113
2114         return (ret);
2115 }
2116
2117 /*
2118  * zfs userspace [-Hinp] [-o field[,...]] [-s field [-s field]...]
2119  *               [-S field [-S field]...] [-t type[,...]] filesystem | snapshot
2120  * zfs groupspace [-Hinp] [-o field[,...]] [-s field [-s field]...]
2121  *                [-S field [-S field]...] [-t type[,...]] filesystem | snapshot
2122  *
2123  *      -H      Scripted mode; elide headers and separate columns by tabs.
2124  *      -i      Translate SID to POSIX ID.
2125  *      -n      Print numeric ID instead of user/group name.
2126  *      -o      Control which fields to display.
2127  *      -p      Use exact (parseable) numeric output.
2128  *      -s      Specify sort columns, descending order.
2129  *      -S      Specify sort columns, ascending order.
2130  *      -t      Control which object types to display.
2131  *
2132  *      Displays space consumed by, and quotas on, each user in the specified
2133  *      filesystem or snapshot.
2134  */
2135
2136 /* us_field_types, us_field_hdr and us_field_names should be kept in sync */
2137 enum us_field_types {
2138         USFIELD_TYPE,
2139         USFIELD_NAME,
2140         USFIELD_USED,
2141         USFIELD_QUOTA
2142 };
2143 static char *us_field_hdr[] = { "TYPE", "NAME", "USED", "QUOTA" };
2144 static char *us_field_names[] = { "type", "name", "used", "quota" };
2145 #define USFIELD_LAST    (sizeof (us_field_names) / sizeof (char *))
2146
2147 #define USTYPE_PSX_GRP  (1 << 0)
2148 #define USTYPE_PSX_USR  (1 << 1)
2149 #define USTYPE_SMB_GRP  (1 << 2)
2150 #define USTYPE_SMB_USR  (1 << 3)
2151 #define USTYPE_ALL      \
2152         (USTYPE_PSX_GRP | USTYPE_PSX_USR | USTYPE_SMB_GRP | USTYPE_SMB_USR)
2153
2154 static int us_type_bits[] = {
2155         USTYPE_PSX_GRP,
2156         USTYPE_PSX_USR,
2157         USTYPE_SMB_GRP,
2158         USTYPE_SMB_USR,
2159         USTYPE_ALL
2160 };
2161 static char *us_type_names[] = { "posixgroup", "posxiuser", "smbgroup",
2162         "smbuser", "all" };
2163
2164 typedef struct us_node {
2165         nvlist_t        *usn_nvl;
2166         uu_avl_node_t   usn_avlnode;
2167         uu_list_node_t  usn_listnode;
2168 } us_node_t;
2169
2170 typedef struct us_cbdata {
2171         nvlist_t        **cb_nvlp;
2172         uu_avl_pool_t   *cb_avl_pool;
2173         uu_avl_t        *cb_avl;
2174         boolean_t       cb_numname;
2175         boolean_t       cb_nicenum;
2176         boolean_t       cb_sid2posix;
2177         zfs_userquota_prop_t cb_prop;
2178         zfs_sort_column_t *cb_sortcol;
2179         size_t          cb_width[USFIELD_LAST];
2180 } us_cbdata_t;
2181
2182 static boolean_t us_populated = B_FALSE;
2183
2184 typedef struct {
2185         zfs_sort_column_t *si_sortcol;
2186         boolean_t       si_numname;
2187 } us_sort_info_t;
2188
2189 static int
2190 us_field_index(char *field)
2191 {
2192         int i;
2193
2194         for (i = 0; i < USFIELD_LAST; i++) {
2195                 if (strcmp(field, us_field_names[i]) == 0)
2196                         return (i);
2197         }
2198
2199         return (-1);
2200 }
2201
2202 static int
2203 us_compare(const void *larg, const void *rarg, void *unused)
2204 {
2205         const us_node_t *l = larg;
2206         const us_node_t *r = rarg;
2207         us_sort_info_t *si = (us_sort_info_t *)unused;
2208         zfs_sort_column_t *sortcol = si->si_sortcol;
2209         boolean_t numname = si->si_numname;
2210         nvlist_t *lnvl = l->usn_nvl;
2211         nvlist_t *rnvl = r->usn_nvl;
2212         int rc = 0;
2213         boolean_t lvb, rvb;
2214
2215         for (; sortcol != NULL; sortcol = sortcol->sc_next) {
2216                 char *lvstr = "";
2217                 char *rvstr = "";
2218                 uint32_t lv32 = 0;
2219                 uint32_t rv32 = 0;
2220                 uint64_t lv64 = 0;
2221                 uint64_t rv64 = 0;
2222                 zfs_prop_t prop = sortcol->sc_prop;
2223                 const char *propname = NULL;
2224                 boolean_t reverse = sortcol->sc_reverse;
2225
2226                 switch (prop) {
2227                 case ZFS_PROP_TYPE:
2228                         propname = "type";
2229                         (void) nvlist_lookup_uint32(lnvl, propname, &lv32);
2230                         (void) nvlist_lookup_uint32(rnvl, propname, &rv32);
2231                         if (rv32 != lv32)
2232                                 rc = (rv32 < lv32) ? 1 : -1;
2233                         break;
2234                 case ZFS_PROP_NAME:
2235                         propname = "name";
2236                         if (numname) {
2237                                 (void) nvlist_lookup_uint64(lnvl, propname,
2238                                     &lv64);
2239                                 (void) nvlist_lookup_uint64(rnvl, propname,
2240                                     &rv64);
2241                                 if (rv64 != lv64)
2242                                         rc = (rv64 < lv64) ? 1 : -1;
2243                         } else {
2244                                 (void) nvlist_lookup_string(lnvl, propname,
2245                                     &lvstr);
2246                                 (void) nvlist_lookup_string(rnvl, propname,
2247                                     &rvstr);
2248                                 rc = strcmp(lvstr, rvstr);
2249                         }
2250                         break;
2251                 case ZFS_PROP_USED:
2252                 case ZFS_PROP_QUOTA:
2253                         if (!us_populated)
2254                                 break;
2255                         if (prop == ZFS_PROP_USED)
2256                                 propname = "used";
2257                         else
2258                                 propname = "quota";
2259                         (void) nvlist_lookup_uint64(lnvl, propname, &lv64);
2260                         (void) nvlist_lookup_uint64(rnvl, propname, &rv64);
2261                         if (rv64 != lv64)
2262                                 rc = (rv64 < lv64) ? 1 : -1;
2263                         break;
2264                 }
2265
2266                 if (rc != 0) {
2267                         if (rc < 0)
2268                                 return (reverse ? 1 : -1);
2269                         else
2270                                 return (reverse ? -1 : 1);
2271                 }
2272         }
2273
2274         /*
2275          * If entries still seem to be the same, check if they are of the same
2276          * type (smbentity is added only if we are doing SID to POSIX ID
2277          * translation where we can have duplicate type/name combinations).
2278          */
2279         if (nvlist_lookup_boolean_value(lnvl, "smbentity", &lvb) == 0 &&
2280             nvlist_lookup_boolean_value(rnvl, "smbentity", &rvb) == 0 &&
2281             lvb != rvb)
2282                 return (lvb < rvb ? -1 : 1);
2283
2284         return (0);
2285 }
2286
2287 static inline const char *
2288 us_type2str(unsigned field_type)
2289 {
2290         switch (field_type) {
2291         case USTYPE_PSX_USR:
2292                 return ("POSIX User");
2293         case USTYPE_PSX_GRP:
2294                 return ("POSIX Group");
2295         case USTYPE_SMB_USR:
2296                 return ("SMB User");
2297         case USTYPE_SMB_GRP:
2298                 return ("SMB Group");
2299         default:
2300                 return ("Undefined");
2301         }
2302 }
2303
2304 static int
2305 userspace_cb(void *arg, const char *domain, uid_t rid, uint64_t space)
2306 {
2307         us_cbdata_t *cb = (us_cbdata_t *)arg;
2308         zfs_userquota_prop_t prop = cb->cb_prop;
2309         char *name = NULL;
2310         char *propname;
2311         char sizebuf[32];
2312         us_node_t *node;
2313         uu_avl_pool_t *avl_pool = cb->cb_avl_pool;
2314         uu_avl_t *avl = cb->cb_avl;
2315         uu_avl_index_t idx;
2316         nvlist_t *props;
2317         us_node_t *n;
2318         zfs_sort_column_t *sortcol = cb->cb_sortcol;
2319         unsigned type;
2320         const char *typestr;
2321         size_t namelen;
2322         size_t typelen;
2323         size_t sizelen;
2324         int typeidx, nameidx, sizeidx;
2325         us_sort_info_t sortinfo = { sortcol, cb->cb_numname };
2326         boolean_t smbentity = B_FALSE;
2327
2328         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
2329                 nomem();
2330         node = safe_malloc(sizeof (us_node_t));
2331         uu_avl_node_init(node, &node->usn_avlnode, avl_pool);
2332         node->usn_nvl = props;
2333
2334         if (domain != NULL && domain[0] != '\0') {
2335                 /* SMB */
2336                 char sid[ZFS_MAXNAMELEN + 32];
2337                 uid_t id;
2338                 uint64_t classes;
2339 #ifdef sun
2340                 int err;
2341                 directory_error_t e;
2342 #endif
2343
2344                 smbentity = B_TRUE;
2345
2346                 (void) snprintf(sid, sizeof (sid), "%s-%u", domain, rid);
2347
2348                 if (prop == ZFS_PROP_GROUPUSED || prop == ZFS_PROP_GROUPQUOTA) {
2349                         type = USTYPE_SMB_GRP;
2350 #ifdef sun
2351                         err = sid_to_id(sid, B_FALSE, &id);
2352 #endif
2353                 } else {
2354                         type = USTYPE_SMB_USR;
2355 #ifdef sun
2356                         err = sid_to_id(sid, B_TRUE, &id);
2357 #endif
2358                 }
2359
2360 #ifdef sun
2361                 if (err == 0) {
2362                         rid = id;
2363                         if (!cb->cb_sid2posix) {
2364                                 e = directory_name_from_sid(NULL, sid, &name,
2365                                     &classes);
2366                                 if (e != NULL)
2367                                         directory_error_free(e);
2368                                 if (name == NULL)
2369                                         name = sid;
2370                         }
2371                 }
2372 #endif
2373         }
2374
2375         if (cb->cb_sid2posix || domain == NULL || domain[0] == '\0') {
2376                 /* POSIX or -i */
2377                 if (prop == ZFS_PROP_GROUPUSED || prop == ZFS_PROP_GROUPQUOTA) {
2378                         type = USTYPE_PSX_GRP;
2379                         if (!cb->cb_numname) {
2380                                 struct group *g;
2381
2382                                 if ((g = getgrgid(rid)) != NULL)
2383                                         name = g->gr_name;
2384                         }
2385                 } else {
2386                         type = USTYPE_PSX_USR;
2387                         if (!cb->cb_numname) {
2388                                 struct passwd *p;
2389
2390                                 if ((p = getpwuid(rid)) != NULL)
2391                                         name = p->pw_name;
2392                         }
2393                 }
2394         }
2395
2396         /*
2397          * Make sure that the type/name combination is unique when doing
2398          * SID to POSIX ID translation (hence changing the type from SMB to
2399          * POSIX).
2400          */
2401         if (cb->cb_sid2posix &&
2402             nvlist_add_boolean_value(props, "smbentity", smbentity) != 0)
2403                 nomem();
2404
2405         /* Calculate/update width of TYPE field */
2406         typestr = us_type2str(type);
2407         typelen = strlen(gettext(typestr));
2408         typeidx = us_field_index("type");
2409         if (typelen > cb->cb_width[typeidx])
2410                 cb->cb_width[typeidx] = typelen;
2411         if (nvlist_add_uint32(props, "type", type) != 0)
2412                 nomem();
2413
2414         /* Calculate/update width of NAME field */
2415         if ((cb->cb_numname && cb->cb_sid2posix) || name == NULL) {
2416                 if (nvlist_add_uint64(props, "name", rid) != 0)
2417                         nomem();
2418                 namelen = snprintf(NULL, 0, "%u", rid);
2419         } else {
2420                 if (nvlist_add_string(props, "name", name) != 0)
2421                         nomem();
2422                 namelen = strlen(name);
2423         }
2424         nameidx = us_field_index("name");
2425         if (namelen > cb->cb_width[nameidx])
2426                 cb->cb_width[nameidx] = namelen;
2427
2428         /*
2429          * Check if this type/name combination is in the list and update it;
2430          * otherwise add new node to the list.
2431          */
2432         if ((n = uu_avl_find(avl, node, &sortinfo, &idx)) == NULL) {
2433                 uu_avl_insert(avl, node, idx);
2434         } else {
2435                 nvlist_free(props);
2436                 free(node);
2437                 node = n;
2438                 props = node->usn_nvl;
2439         }
2440
2441         /* Calculate/update width of USED/QUOTA fields */
2442         if (cb->cb_nicenum)
2443                 zfs_nicenum(space, sizebuf, sizeof (sizebuf));
2444         else
2445                 (void) snprintf(sizebuf, sizeof (sizebuf), "%llu", space);
2446         sizelen = strlen(sizebuf);
2447         if (prop == ZFS_PROP_USERUSED || prop == ZFS_PROP_GROUPUSED) {
2448                 propname = "used";
2449                 if (!nvlist_exists(props, "quota"))
2450                         (void) nvlist_add_uint64(props, "quota", 0);
2451         } else {
2452                 propname = "quota";
2453                 if (!nvlist_exists(props, "used"))
2454                         (void) nvlist_add_uint64(props, "used", 0);
2455         }
2456         sizeidx = us_field_index(propname);
2457         if (sizelen > cb->cb_width[sizeidx])
2458                 cb->cb_width[sizeidx] = sizelen;
2459
2460         if (nvlist_add_uint64(props, propname, space) != 0)
2461                 nomem();
2462
2463         return (0);
2464 }
2465
2466 static void
2467 print_us_node(boolean_t scripted, boolean_t parsable, int *fields, int types,
2468     size_t *width, us_node_t *node)
2469 {
2470         nvlist_t *nvl = node->usn_nvl;
2471         char valstr[ZFS_MAXNAMELEN];
2472         boolean_t first = B_TRUE;
2473         int cfield = 0;
2474         int field;
2475         uint32_t ustype;
2476
2477         /* Check type */
2478         (void) nvlist_lookup_uint32(nvl, "type", &ustype);
2479         if (!(ustype & types))
2480                 return;
2481
2482         while ((field = fields[cfield]) != USFIELD_LAST) {
2483                 nvpair_t *nvp = NULL;
2484                 data_type_t type;
2485                 uint32_t val32;
2486                 uint64_t val64;
2487                 char *strval = NULL;
2488
2489                 while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
2490                         if (strcmp(nvpair_name(nvp),
2491                             us_field_names[field]) == 0)
2492                                 break;
2493                 }
2494
2495                 type = nvpair_type(nvp);
2496                 switch (type) {
2497                 case DATA_TYPE_UINT32:
2498                         (void) nvpair_value_uint32(nvp, &val32);
2499                         break;
2500                 case DATA_TYPE_UINT64:
2501                         (void) nvpair_value_uint64(nvp, &val64);
2502                         break;
2503                 case DATA_TYPE_STRING:
2504                         (void) nvpair_value_string(nvp, &strval);
2505                         break;
2506                 default:
2507                         (void) fprintf(stderr, "invalid data type\n");
2508                 }
2509
2510                 switch (field) {
2511                 case USFIELD_TYPE:
2512                         strval = (char *)us_type2str(val32);
2513                         break;
2514                 case USFIELD_NAME:
2515                         if (type == DATA_TYPE_UINT64) {
2516                                 (void) sprintf(valstr, "%llu", val64);
2517                                 strval = valstr;
2518                         }
2519                         break;
2520                 case USFIELD_USED:
2521                 case USFIELD_QUOTA:
2522                         if (type == DATA_TYPE_UINT64) {
2523                                 if (parsable) {
2524                                         (void) sprintf(valstr, "%llu", val64);
2525                                 } else {
2526                                         zfs_nicenum(val64, valstr,
2527                                             sizeof (valstr));
2528                                 }
2529                                 if (field == USFIELD_QUOTA &&
2530                                     strcmp(valstr, "0") == 0)
2531                                         strval = "none";
2532                                 else
2533                                         strval = valstr;
2534                         }
2535                         break;
2536                 }
2537
2538                 if (!first) {
2539                         if (scripted)
2540                                 (void) printf("\t");
2541                         else
2542                                 (void) printf("  ");
2543                 }
2544                 if (scripted)
2545                         (void) printf("%s", strval);
2546                 else if (field == USFIELD_TYPE || field == USFIELD_NAME)
2547                         (void) printf("%-*s", width[field], strval);
2548                 else
2549                         (void) printf("%*s", width[field], strval);
2550
2551                 first = B_FALSE;
2552                 cfield++;
2553         }
2554
2555         (void) printf("\n");
2556 }
2557
2558 static void
2559 print_us(boolean_t scripted, boolean_t parsable, int *fields, int types,
2560     size_t *width, boolean_t rmnode, uu_avl_t *avl)
2561 {
2562         us_node_t *node;
2563         const char *col;
2564         int cfield = 0;
2565         int field;
2566
2567         if (!scripted) {
2568                 boolean_t first = B_TRUE;
2569
2570                 while ((field = fields[cfield]) != USFIELD_LAST) {
2571                         col = gettext(us_field_hdr[field]);
2572                         if (field == USFIELD_TYPE || field == USFIELD_NAME) {
2573                                 (void) printf(first ? "%-*s" : "  %-*s",
2574                                     width[field], col);
2575                         } else {
2576                                 (void) printf(first ? "%*s" : "  %*s",
2577                                     width[field], col);
2578                         }
2579                         first = B_FALSE;
2580                         cfield++;
2581                 }
2582                 (void) printf("\n");
2583         }
2584
2585         for (node = uu_avl_first(avl); node; node = uu_avl_next(avl, node)) {
2586                 print_us_node(scripted, parsable, fields, types, width, node);
2587                 if (rmnode)
2588                         nvlist_free(node->usn_nvl);
2589         }
2590 }
2591
2592 static int
2593 zfs_do_userspace(int argc, char **argv)
2594 {
2595         zfs_handle_t *zhp;
2596         zfs_userquota_prop_t p;
2597
2598         uu_avl_pool_t *avl_pool;
2599         uu_avl_t *avl_tree;
2600         uu_avl_walk_t *walk;
2601         char *delim;
2602         char deffields[] = "type,name,used,quota";
2603         char *ofield = NULL;
2604         char *tfield = NULL;
2605         int cfield = 0;
2606         int fields[256];
2607         int i;
2608         boolean_t scripted = B_FALSE;
2609         boolean_t prtnum = B_FALSE;
2610         boolean_t parsable = B_FALSE;
2611         boolean_t sid2posix = B_FALSE;
2612         int ret = 0;
2613         int c;
2614         zfs_sort_column_t *sortcol = NULL;
2615         int types = USTYPE_PSX_USR | USTYPE_SMB_USR;
2616         us_cbdata_t cb;
2617         us_node_t *node;
2618         us_node_t *rmnode;
2619         uu_list_pool_t *listpool;
2620         uu_list_t *list;
2621         uu_avl_index_t idx = 0;
2622         uu_list_index_t idx2 = 0;
2623
2624         if (argc < 2)
2625                 usage(B_FALSE);
2626
2627         if (strcmp(argv[0], "groupspace") == 0)
2628                 /* Toggle default group types */
2629                 types = USTYPE_PSX_GRP | USTYPE_SMB_GRP;
2630
2631         while ((c = getopt(argc, argv, "nHpo:s:S:t:i")) != -1) {
2632                 switch (c) {
2633                 case 'n':
2634                         prtnum = B_TRUE;
2635                         break;
2636                 case 'H':
2637                         scripted = B_TRUE;
2638                         break;
2639                 case 'p':
2640                         parsable = B_TRUE;
2641                         break;
2642                 case 'o':
2643                         ofield = optarg;
2644                         break;
2645                 case 's':
2646                 case 'S':
2647                         if (zfs_add_sort_column(&sortcol, optarg,
2648                             c == 's' ? B_FALSE : B_TRUE) != 0) {
2649                                 (void) fprintf(stderr,
2650                                     gettext("invalid field '%s'\n"), optarg);
2651                                 usage(B_FALSE);
2652                         }
2653                         break;
2654                 case 't':
2655                         tfield = optarg;
2656                         break;
2657                 case 'i':
2658                         sid2posix = B_TRUE;
2659                         break;
2660                 case ':':
2661                         (void) fprintf(stderr, gettext("missing argument for "
2662                             "'%c' option\n"), optopt);
2663                         usage(B_FALSE);
2664                         break;
2665                 case '?':
2666                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2667                             optopt);
2668                         usage(B_FALSE);
2669                 }
2670         }
2671
2672         argc -= optind;
2673         argv += optind;
2674
2675         if (argc < 1) {
2676                 (void) fprintf(stderr, gettext("missing dataset name\n"));
2677                 usage(B_FALSE);
2678         }
2679         if (argc > 1) {
2680                 (void) fprintf(stderr, gettext("too many arguments\n"));
2681                 usage(B_FALSE);
2682         }
2683
2684         /* Use default output fields if not specified using -o */
2685         if (ofield == NULL)
2686                 ofield = deffields;
2687         do {
2688                 if ((delim = strchr(ofield, ',')) != NULL)
2689                         *delim = '\0';
2690                 if ((fields[cfield++] = us_field_index(ofield)) == -1) {
2691                         (void) fprintf(stderr, gettext("invalid type '%s' "
2692                             "for -o option\n"), ofield);
2693                         return (-1);
2694                 }
2695                 if (delim != NULL)
2696                         ofield = delim + 1;
2697         } while (delim != NULL);
2698         fields[cfield] = USFIELD_LAST;
2699
2700         /* Override output types (-t option) */
2701         if (tfield != NULL) {
2702                 types = 0;
2703
2704                 do {
2705                         boolean_t found = B_FALSE;
2706
2707                         if ((delim = strchr(tfield, ',')) != NULL)
2708                                 *delim = '\0';
2709                         for (i = 0; i < sizeof (us_type_bits) / sizeof (int);
2710                             i++) {
2711                                 if (strcmp(tfield, us_type_names[i]) == 0) {
2712                                         found = B_TRUE;
2713                                         types |= us_type_bits[i];
2714                                         break;
2715                                 }
2716                         }
2717                         if (!found) {
2718                                 (void) fprintf(stderr, gettext("invalid type "
2719                                     "'%s' for -t option\n"), tfield);
2720                                 return (-1);
2721                         }
2722                         if (delim != NULL)
2723                                 tfield = delim + 1;
2724                 } while (delim != NULL);
2725         }
2726
2727         if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL)
2728                 return (1);
2729
2730         if ((avl_pool = uu_avl_pool_create("us_avl_pool", sizeof (us_node_t),
2731             offsetof(us_node_t, usn_avlnode), us_compare, UU_DEFAULT)) == NULL)
2732                 nomem();
2733         if ((avl_tree = uu_avl_create(avl_pool, NULL, UU_DEFAULT)) == NULL)
2734                 nomem();
2735
2736         /* Always add default sorting columns */
2737         (void) zfs_add_sort_column(&sortcol, "type", B_FALSE);
2738         (void) zfs_add_sort_column(&sortcol, "name", B_FALSE);
2739
2740         cb.cb_sortcol = sortcol;
2741         cb.cb_numname = prtnum;
2742         cb.cb_nicenum = !parsable;
2743         cb.cb_avl_pool = avl_pool;
2744         cb.cb_avl = avl_tree;
2745         cb.cb_sid2posix = sid2posix;
2746
2747         for (i = 0; i < USFIELD_LAST; i++)
2748                 cb.cb_width[i] = strlen(gettext(us_field_hdr[i]));
2749
2750         for (p = 0; p < ZFS_NUM_USERQUOTA_PROPS; p++) {
2751                 if (((p == ZFS_PROP_USERUSED || p == ZFS_PROP_USERQUOTA) &&
2752                     !(types & (USTYPE_PSX_USR | USTYPE_SMB_USR))) ||
2753                     ((p == ZFS_PROP_GROUPUSED || p == ZFS_PROP_GROUPQUOTA) &&
2754                     !(types & (USTYPE_PSX_GRP | USTYPE_SMB_GRP))))
2755                         continue;
2756                 cb.cb_prop = p;
2757                 if ((ret = zfs_userspace(zhp, p, userspace_cb, &cb)) != 0)
2758                         return (ret);
2759         }
2760
2761         /* Sort the list */
2762         if ((node = uu_avl_first(avl_tree)) == NULL)
2763                 return (0);
2764
2765         us_populated = B_TRUE;
2766
2767         listpool = uu_list_pool_create("tmplist", sizeof (us_node_t),
2768             offsetof(us_node_t, usn_listnode), NULL, UU_DEFAULT);
2769         list = uu_list_create(listpool, NULL, UU_DEFAULT);
2770         uu_list_node_init(node, &node->usn_listnode, listpool);
2771
2772         while (node != NULL) {
2773                 rmnode = node;
2774                 node = uu_avl_next(avl_tree, node);
2775                 uu_avl_remove(avl_tree, rmnode);
2776                 if (uu_list_find(list, rmnode, NULL, &idx2) == NULL)
2777                         uu_list_insert(list, rmnode, idx2);
2778         }
2779
2780         for (node = uu_list_first(list); node != NULL;
2781             node = uu_list_next(list, node)) {
2782                 us_sort_info_t sortinfo = { sortcol, cb.cb_numname };
2783
2784                 if (uu_avl_find(avl_tree, node, &sortinfo, &idx) == NULL)
2785                         uu_avl_insert(avl_tree, node, idx);
2786         }
2787
2788         uu_list_destroy(list);
2789         uu_list_pool_destroy(listpool);
2790
2791         /* Print and free node nvlist memory */
2792         print_us(scripted, parsable, fields, types, cb.cb_width, B_TRUE,
2793             cb.cb_avl);
2794
2795         zfs_free_sort_columns(sortcol);
2796
2797         /* Clean up the AVL tree */
2798         if ((walk = uu_avl_walk_start(cb.cb_avl, UU_WALK_ROBUST)) == NULL)
2799                 nomem();
2800
2801         while ((node = uu_avl_walk_next(walk)) != NULL) {
2802                 uu_avl_remove(cb.cb_avl, node);
2803                 free(node);
2804         }
2805
2806         uu_avl_walk_end(walk);
2807         uu_avl_destroy(avl_tree);
2808         uu_avl_pool_destroy(avl_pool);
2809
2810         return (ret);
2811 }
2812
2813 /*
2814  * list [-r][-d max] [-H] [-o property[,property]...] [-t type[,type]...]
2815  *      [-s property [-s property]...] [-S property [-S property]...]
2816  *      <dataset> ...
2817  *
2818  *      -r      Recurse over all children
2819  *      -d      Limit recursion by depth.
2820  *      -H      Scripted mode; elide headers and separate columns by tabs
2821  *      -o      Control which fields to display.
2822  *      -t      Control which object types to display.
2823  *      -s      Specify sort columns, descending order.
2824  *      -S      Specify sort columns, ascending order.
2825  *
2826  * When given no arguments, lists all filesystems in the system.
2827  * Otherwise, list the specified datasets, optionally recursing down them if
2828  * '-r' is specified.
2829  */
2830 typedef struct list_cbdata {
2831         boolean_t       cb_first;
2832         boolean_t       cb_scripted;
2833         zprop_list_t    *cb_proplist;
2834 } list_cbdata_t;
2835
2836 /*
2837  * Given a list of columns to display, output appropriate headers for each one.
2838  */
2839 static void
2840 print_header(zprop_list_t *pl)
2841 {
2842         char headerbuf[ZFS_MAXPROPLEN];
2843         const char *header;
2844         int i;
2845         boolean_t first = B_TRUE;
2846         boolean_t right_justify;
2847
2848         for (; pl != NULL; pl = pl->pl_next) {
2849                 if (!first) {
2850                         (void) printf("  ");
2851                 } else {
2852                         first = B_FALSE;
2853                 }
2854
2855                 right_justify = B_FALSE;
2856                 if (pl->pl_prop != ZPROP_INVAL) {
2857                         header = zfs_prop_column_name(pl->pl_prop);
2858                         right_justify = zfs_prop_align_right(pl->pl_prop);
2859                 } else {
2860                         for (i = 0; pl->pl_user_prop[i] != '\0'; i++)
2861                                 headerbuf[i] = toupper(pl->pl_user_prop[i]);
2862                         headerbuf[i] = '\0';
2863                         header = headerbuf;
2864                 }
2865
2866                 if (pl->pl_next == NULL && !right_justify)
2867                         (void) printf("%s", header);
2868                 else if (right_justify)
2869                         (void) printf("%*s", pl->pl_width, header);
2870                 else
2871                         (void) printf("%-*s", pl->pl_width, header);
2872         }
2873
2874         (void) printf("\n");
2875 }
2876
2877 /*
2878  * Given a dataset and a list of fields, print out all the properties according
2879  * to the described layout.
2880  */
2881 static void
2882 print_dataset(zfs_handle_t *zhp, zprop_list_t *pl, boolean_t scripted)
2883 {
2884         boolean_t first = B_TRUE;
2885         char property[ZFS_MAXPROPLEN];
2886         nvlist_t *userprops = zfs_get_user_props(zhp);
2887         nvlist_t *propval;
2888         char *propstr;
2889         boolean_t right_justify;
2890         int width;
2891
2892         for (; pl != NULL; pl = pl->pl_next) {
2893                 if (!first) {
2894                         if (scripted)
2895                                 (void) printf("\t");
2896                         else
2897                                 (void) printf("  ");
2898                 } else {
2899                         first = B_FALSE;
2900                 }
2901
2902                 if (pl->pl_prop == ZFS_PROP_NAME) {
2903                         (void) strlcpy(property, zfs_get_name(zhp),
2904                             sizeof(property));
2905                         propstr = property;
2906                         right_justify = zfs_prop_align_right(pl->pl_prop);
2907                 } else if (pl->pl_prop != ZPROP_INVAL) {
2908                         if (zfs_prop_get(zhp, pl->pl_prop, property,
2909                             sizeof (property), NULL, NULL, 0, B_FALSE) != 0)
2910                                 propstr = "-";
2911                         else
2912                                 propstr = property;
2913
2914                         right_justify = zfs_prop_align_right(pl->pl_prop);
2915                 } else if (zfs_prop_userquota(pl->pl_user_prop)) {
2916                         if (zfs_prop_get_userquota(zhp, pl->pl_user_prop,
2917                             property, sizeof (property), B_FALSE) != 0)
2918                                 propstr = "-";
2919                         else
2920                                 propstr = property;
2921                         right_justify = B_TRUE;
2922                 } else if (zfs_prop_written(pl->pl_user_prop)) {
2923                         if (zfs_prop_get_written(zhp, pl->pl_user_prop,
2924                             property, sizeof (property), B_FALSE) != 0)
2925                                 propstr = "-";
2926                         else
2927                                 propstr = property;
2928                         right_justify = B_TRUE;
2929                 } else {
2930                         if (nvlist_lookup_nvlist(userprops,
2931                             pl->pl_user_prop, &propval) != 0)
2932                                 propstr = "-";
2933                         else
2934                                 verify(nvlist_lookup_string(propval,
2935                                     ZPROP_VALUE, &propstr) == 0);
2936                         right_justify = B_FALSE;
2937                 }
2938
2939                 width = pl->pl_width;
2940
2941                 /*
2942                  * If this is being called in scripted mode, or if this is the
2943                  * last column and it is left-justified, don't include a width
2944                  * format specifier.
2945                  */
2946                 if (scripted || (pl->pl_next == NULL && !right_justify))
2947                         (void) printf("%s", propstr);
2948                 else if (right_justify)
2949                         (void) printf("%*s", width, propstr);
2950                 else
2951                         (void) printf("%-*s", width, propstr);
2952         }
2953
2954         (void) printf("\n");
2955 }
2956
2957 /*
2958  * Generic callback function to list a dataset or snapshot.
2959  */
2960 static int
2961 list_callback(zfs_handle_t *zhp, void *data)
2962 {
2963         list_cbdata_t *cbp = data;
2964
2965         if (cbp->cb_first) {
2966                 if (!cbp->cb_scripted)
2967                         print_header(cbp->cb_proplist);
2968                 cbp->cb_first = B_FALSE;
2969         }
2970
2971         print_dataset(zhp, cbp->cb_proplist, cbp->cb_scripted);
2972
2973         return (0);
2974 }
2975
2976 static int
2977 zfs_do_list(int argc, char **argv)
2978 {
2979         int c;
2980         boolean_t scripted = B_FALSE;
2981         static char default_fields[] =
2982             "name,used,available,referenced,mountpoint";
2983         int types = ZFS_TYPE_DATASET;
2984         boolean_t types_specified = B_FALSE;
2985         char *fields = NULL;
2986         list_cbdata_t cb = { 0 };
2987         char *value;
2988         int limit = 0;
2989         int ret = 0;
2990         zfs_sort_column_t *sortcol = NULL;
2991         int flags = ZFS_ITER_PROP_LISTSNAPS | ZFS_ITER_ARGS_CAN_BE_PATHS;
2992
2993         /* check options */
2994         while ((c = getopt(argc, argv, ":d:o:rt:Hs:S:")) != -1) {
2995                 switch (c) {
2996                 case 'o':
2997                         fields = optarg;
2998                         break;
2999                 case 'd':
3000                         limit = parse_depth(optarg, &flags);
3001                         break;
3002                 case 'r':
3003                         flags |= ZFS_ITER_RECURSE;
3004                         break;
3005                 case 'H':
3006                         scripted = B_TRUE;
3007                         break;
3008                 case 's':
3009                         if (zfs_add_sort_column(&sortcol, optarg,
3010                             B_FALSE) != 0) {
3011                                 (void) fprintf(stderr,
3012                                     gettext("invalid property '%s'\n"), optarg);
3013                                 usage(B_FALSE);
3014                         }
3015                         break;
3016                 case 'S':
3017                         if (zfs_add_sort_column(&sortcol, optarg,
3018                             B_TRUE) != 0) {
3019                                 (void) fprintf(stderr,
3020                                     gettext("invalid property '%s'\n"), optarg);
3021                                 usage(B_FALSE);
3022                         }
3023                         break;
3024                 case 't':
3025                         types = 0;
3026                         types_specified = B_TRUE;
3027                         flags &= ~ZFS_ITER_PROP_LISTSNAPS;
3028                         while (*optarg != '\0') {
3029                                 static char *type_subopts[] = { "filesystem",
3030                                     "volume", "snapshot", "all", NULL };
3031
3032                                 switch (getsubopt(&optarg, type_subopts,
3033                                     &value)) {
3034                                 case 0:
3035                                         types |= ZFS_TYPE_FILESYSTEM;
3036                                         break;
3037                                 case 1:
3038                                         types |= ZFS_TYPE_VOLUME;
3039                                         break;
3040                                 case 2:
3041                                         types |= ZFS_TYPE_SNAPSHOT;
3042                                         break;
3043                                 case 3:
3044                                         types = ZFS_TYPE_DATASET;
3045                                         break;
3046
3047                                 default:
3048                                         (void) fprintf(stderr,
3049                                             gettext("invalid type '%s'\n"),
3050                                             value);
3051                                         usage(B_FALSE);
3052                                 }
3053                         }
3054                         break;
3055                 case ':':
3056                         (void) fprintf(stderr, gettext("missing argument for "
3057                             "'%c' option\n"), optopt);
3058                         usage(B_FALSE);
3059                         break;
3060                 case '?':
3061                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3062                             optopt);
3063                         usage(B_FALSE);
3064                 }
3065         }
3066
3067         argc -= optind;
3068         argv += optind;
3069
3070         if (fields == NULL)
3071                 fields = default_fields;
3072
3073         /*
3074          * If we are only going to list snapshot names and sort by name,
3075          * then we can use faster version.
3076          */
3077         if (strcmp(fields, "name") == 0 && zfs_sort_only_by_name(sortcol))
3078                 flags |= ZFS_ITER_SIMPLE;
3079
3080         /*
3081          * If "-o space" and no types were specified, don't display snapshots.
3082          */
3083         if (strcmp(fields, "space") == 0 && types_specified == B_FALSE)
3084                 types &= ~ZFS_TYPE_SNAPSHOT;
3085
3086         /*
3087          * If the user specifies '-o all', the zprop_get_list() doesn't
3088          * normally include the name of the dataset.  For 'zfs list', we always
3089          * want this property to be first.
3090          */
3091         if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
3092             != 0)
3093                 usage(B_FALSE);
3094
3095         cb.cb_scripted = scripted;
3096         cb.cb_first = B_TRUE;
3097
3098         ret = zfs_for_each(argc, argv, flags, types, sortcol, &cb.cb_proplist,
3099             limit, list_callback, &cb);
3100
3101         zprop_free_list(cb.cb_proplist);
3102         zfs_free_sort_columns(sortcol);
3103
3104         if (ret == 0 && cb.cb_first && !cb.cb_scripted)
3105                 (void) printf(gettext("no datasets available\n"));
3106
3107         return (ret);
3108 }
3109
3110 /*
3111  * zfs rename [-f] <fs | snap | vol> <fs | snap | vol>
3112  * zfs rename [-f] -p <fs | vol> <fs | vol>
3113  * zfs rename -r <snap> <snap>
3114  * zfs rename -u [-p] <fs> <fs>
3115  *
3116  * Renames the given dataset to another of the same type.
3117  *
3118  * The '-p' flag creates all the non-existing ancestors of the target first.
3119  */
3120 /* ARGSUSED */
3121 static int
3122 zfs_do_rename(int argc, char **argv)
3123 {
3124         zfs_handle_t *zhp;
3125         renameflags_t flags = { 0 };
3126         int c;
3127         int ret = 0;
3128         int types;
3129         boolean_t parents = B_FALSE;
3130         char *snapshot = NULL;
3131
3132         /* check options */
3133         while ((c = getopt(argc, argv, "fpru")) != -1) {
3134                 switch (c) {
3135                 case 'p':
3136                         parents = B_TRUE;
3137                         break;
3138                 case 'r':
3139                         flags.recurse = B_TRUE;
3140                         break;
3141                 case 'u':
3142                         flags.nounmount = B_TRUE;
3143                         break;
3144                 case 'f':
3145                         flags.forceunmount = B_TRUE;
3146                         break;
3147                 case '?':
3148                 default:
3149                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3150                             optopt);
3151                         usage(B_FALSE);
3152                 }
3153         }
3154
3155         argc -= optind;
3156         argv += optind;
3157
3158         /* check number of arguments */
3159         if (argc < 1) {
3160                 (void) fprintf(stderr, gettext("missing source dataset "
3161                     "argument\n"));
3162                 usage(B_FALSE);
3163         }
3164         if (argc < 2) {
3165                 (void) fprintf(stderr, gettext("missing target dataset "
3166                     "argument\n"));
3167                 usage(B_FALSE);
3168         }
3169         if (argc > 2) {
3170                 (void) fprintf(stderr, gettext("too many arguments\n"));
3171                 usage(B_FALSE);
3172         }
3173
3174         if (flags.recurse && parents) {
3175                 (void) fprintf(stderr, gettext("-p and -r options are mutually "
3176                     "exclusive\n"));
3177                 usage(B_FALSE);
3178         }
3179
3180         if (flags.recurse && strchr(argv[0], '@') == 0) {
3181                 (void) fprintf(stderr, gettext("source dataset for recursive "
3182                     "rename must be a snapshot\n"));
3183                 usage(B_FALSE);
3184         }
3185
3186         if (flags.nounmount && parents) {
3187                 (void) fprintf(stderr, gettext("-u and -p options are mutually "
3188                     "exclusive\n"));
3189                 usage(B_FALSE);
3190         }
3191
3192         if (flags.nounmount)
3193                 types = ZFS_TYPE_FILESYSTEM;
3194         else if (parents)
3195                 types = ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME;
3196         else
3197                 types = ZFS_TYPE_DATASET;
3198
3199         if (flags.recurse) {
3200                 /*
3201                  * When we do recursive rename we are fine when the given
3202                  * snapshot for the given dataset doesn't exist - it can
3203                  * still exists below.
3204                  */
3205
3206                 snapshot = strchr(argv[0], '@');
3207                 assert(snapshot != NULL);
3208                 *snapshot = '\0';
3209                 snapshot++;
3210         }
3211
3212         if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL)
3213                 return (1);
3214
3215         /* If we were asked and the name looks good, try to create ancestors. */
3216         if (parents && zfs_name_valid(argv[1], zfs_get_type(zhp)) &&
3217             zfs_create_ancestors(g_zfs, argv[1]) != 0) {
3218                 zfs_close(zhp);
3219                 return (1);
3220         }
3221
3222         ret = (zfs_rename(zhp, snapshot, argv[1], flags) != 0);
3223
3224         zfs_close(zhp);
3225         return (ret);
3226 }
3227
3228 /*
3229  * zfs promote <fs>
3230  *
3231  * Promotes the given clone fs to be the parent
3232  */
3233 /* ARGSUSED */
3234 static int
3235 zfs_do_promote(int argc, char **argv)
3236 {
3237         zfs_handle_t *zhp;
3238         int ret = 0;
3239
3240         /* check options */
3241         if (argc > 1 && argv[1][0] == '-') {
3242                 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3243                     argv[1][1]);
3244                 usage(B_FALSE);
3245         }
3246
3247         /* check number of arguments */
3248         if (argc < 2) {
3249                 (void) fprintf(stderr, gettext("missing clone filesystem"
3250                     " argument\n"));
3251                 usage(B_FALSE);
3252         }
3253         if (argc > 2) {
3254                 (void) fprintf(stderr, gettext("too many arguments\n"));
3255                 usage(B_FALSE);
3256         }
3257
3258         zhp = zfs_open(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3259         if (zhp == NULL)
3260                 return (1);
3261
3262         ret = (zfs_promote(zhp) != 0);
3263
3264
3265         zfs_close(zhp);
3266         return (ret);
3267 }
3268
3269 /*
3270  * zfs rollback [-rRf] <snapshot>
3271  *
3272  *      -r      Delete any intervening snapshots before doing rollback
3273  *      -R      Delete any snapshots and their clones
3274  *      -f      ignored for backwards compatability
3275  *
3276  * Given a filesystem, rollback to a specific snapshot, discarding any changes
3277  * since then and making it the active dataset.  If more recent snapshots exist,
3278  * the command will complain unless the '-r' flag is given.
3279  */
3280 typedef struct rollback_cbdata {
3281         uint64_t        cb_create;
3282         boolean_t       cb_first;
3283         int             cb_doclones;
3284         char            *cb_target;
3285         int             cb_error;
3286         boolean_t       cb_recurse;
3287         boolean_t       cb_dependent;
3288 } rollback_cbdata_t;
3289
3290 /*
3291  * Report any snapshots more recent than the one specified.  Used when '-r' is
3292  * not specified.  We reuse this same callback for the snapshot dependents - if
3293  * 'cb_dependent' is set, then this is a dependent and we should report it
3294  * without checking the transaction group.
3295  */
3296 static int
3297 rollback_check(zfs_handle_t *zhp, void *data)
3298 {
3299         rollback_cbdata_t *cbp = data;
3300
3301         if (cbp->cb_doclones) {
3302                 zfs_close(zhp);
3303                 return (0);
3304         }
3305
3306         if (!cbp->cb_dependent) {
3307                 if (strcmp(zfs_get_name(zhp), cbp->cb_target) != 0 &&
3308                     zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT &&
3309                     zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) >
3310                     cbp->cb_create) {
3311
3312                         if (cbp->cb_first && !cbp->cb_recurse) {
3313                                 (void) fprintf(stderr, gettext("cannot "
3314                                     "rollback to '%s': more recent snapshots "
3315                                     "exist\n"),
3316                                     cbp->cb_target);
3317                                 (void) fprintf(stderr, gettext("use '-r' to "
3318                                     "force deletion of the following "
3319                                     "snapshots:\n"));
3320                                 cbp->cb_first = 0;
3321                                 cbp->cb_error = 1;
3322                         }
3323
3324                         if (cbp->cb_recurse) {
3325                                 cbp->cb_dependent = B_TRUE;
3326                                 if (zfs_iter_dependents(zhp, B_TRUE,
3327                                     rollback_check, cbp) != 0) {
3328                                         zfs_close(zhp);
3329                                         return (-1);
3330                                 }
3331                                 cbp->cb_dependent = B_FALSE;
3332                         } else {
3333                                 (void) fprintf(stderr, "%s\n",
3334                                     zfs_get_name(zhp));
3335                         }
3336                 }
3337         } else {
3338                 if (cbp->cb_first && cbp->cb_recurse) {
3339                         (void) fprintf(stderr, gettext("cannot rollback to "
3340                             "'%s': clones of previous snapshots exist\n"),
3341                             cbp->cb_target);
3342                         (void) fprintf(stderr, gettext("use '-R' to "
3343                             "force deletion of the following clones and "
3344                             "dependents:\n"));
3345                         cbp->cb_first = 0;
3346                         cbp->cb_error = 1;
3347                 }
3348
3349                 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
3350         }
3351
3352         zfs_close(zhp);
3353         return (0);
3354 }
3355
3356 static int
3357 zfs_do_rollback(int argc, char **argv)
3358 {
3359         int ret = 0;
3360         int c;
3361         boolean_t force = B_FALSE;
3362         rollback_cbdata_t cb = { 0 };
3363         zfs_handle_t *zhp, *snap;
3364         char parentname[ZFS_MAXNAMELEN];
3365         char *delim;
3366
3367         /* check options */
3368         while ((c = getopt(argc, argv, "rRf")) != -1) {
3369                 switch (c) {
3370                 case 'r':
3371                         cb.cb_recurse = 1;
3372                         break;
3373                 case 'R':
3374                         cb.cb_recurse = 1;
3375                         cb.cb_doclones = 1;
3376                         break;
3377                 case 'f':
3378                         force = B_TRUE;
3379                         break;
3380                 case '?':
3381                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3382                             optopt);
3383                         usage(B_FALSE);
3384                 }
3385         }
3386
3387         argc -= optind;
3388         argv += optind;
3389
3390         /* check number of arguments */
3391         if (argc < 1) {
3392                 (void) fprintf(stderr, gettext("missing dataset argument\n"));
3393                 usage(B_FALSE);
3394         }
3395         if (argc > 1) {
3396                 (void) fprintf(stderr, gettext("too many arguments\n"));
3397                 usage(B_FALSE);
3398         }
3399
3400         /* open the snapshot */
3401         if ((snap = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
3402                 return (1);
3403
3404         /* open the parent dataset */
3405         (void) strlcpy(parentname, argv[0], sizeof (parentname));
3406         verify((delim = strrchr(parentname, '@')) != NULL);
3407         *delim = '\0';
3408         if ((zhp = zfs_open(g_zfs, parentname, ZFS_TYPE_DATASET)) == NULL) {
3409                 zfs_close(snap);
3410                 return (1);
3411         }
3412
3413         /*
3414          * Check for more recent snapshots and/or clones based on the presence
3415          * of '-r' and '-R'.
3416          */
3417         cb.cb_target = argv[0];
3418         cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG);
3419         cb.cb_first = B_TRUE;
3420         cb.cb_error = 0;
3421         if ((ret = zfs_iter_children(zhp, rollback_check, &cb)) != 0)
3422                 goto out;
3423
3424         if ((ret = cb.cb_error) != 0)
3425                 goto out;
3426
3427         /*
3428          * Rollback parent to the given snapshot.
3429          */
3430         ret = zfs_rollback(zhp, snap, force);
3431
3432 out:
3433         zfs_close(snap);
3434         zfs_close(zhp);
3435
3436         if (ret == 0)
3437                 return (0);
3438         else
3439                 return (1);
3440 }
3441
3442 /*
3443  * zfs set property=value { fs | snap | vol } ...
3444  *
3445  * Sets the given property for all datasets specified on the command line.
3446  */
3447 typedef struct set_cbdata {
3448         char            *cb_propname;
3449         char            *cb_value;
3450 } set_cbdata_t;
3451
3452 static int
3453 set_callback(zfs_handle_t *zhp, void *data)
3454 {
3455         set_cbdata_t *cbp = data;
3456
3457         if (zfs_prop_set(zhp, cbp->cb_propname, cbp->cb_value) != 0) {
3458                 switch (libzfs_errno(g_zfs)) {
3459                 case EZFS_MOUNTFAILED:
3460                         (void) fprintf(stderr, gettext("property may be set "
3461                             "but unable to remount filesystem\n"));
3462                         break;
3463                 case EZFS_SHARENFSFAILED:
3464                         (void) fprintf(stderr, gettext("property may be set "
3465                             "but unable to reshare filesystem\n"));
3466                         break;
3467                 }
3468                 return (1);
3469         }
3470         return (0);
3471 }
3472
3473 static int
3474 zfs_do_set(int argc, char **argv)
3475 {
3476         set_cbdata_t cb;
3477         int ret = 0;
3478
3479         /* check for options */
3480         if (argc > 1 && argv[1][0] == '-') {
3481                 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3482                     argv[1][1]);
3483                 usage(B_FALSE);
3484         }
3485
3486         /* check number of arguments */
3487         if (argc < 2) {
3488                 (void) fprintf(stderr, gettext("missing property=value "
3489                     "argument\n"));
3490                 usage(B_FALSE);
3491         }
3492         if (argc < 3) {
3493                 (void) fprintf(stderr, gettext("missing dataset name\n"));
3494                 usage(B_FALSE);
3495         }
3496
3497         /* validate property=value argument */
3498         cb.cb_propname = argv[1];
3499         if (((cb.cb_value = strchr(cb.cb_propname, '=')) == NULL) ||
3500             (cb.cb_value[1] == '\0')) {
3501                 (void) fprintf(stderr, gettext("missing value in "
3502                     "property=value argument\n"));
3503                 usage(B_FALSE);
3504         }
3505
3506         *cb.cb_value = '\0';
3507         cb.cb_value++;
3508
3509         if (*cb.cb_propname == '\0') {
3510                 (void) fprintf(stderr,
3511                     gettext("missing property in property=value argument\n"));
3512                 usage(B_FALSE);
3513         }
3514
3515         ret = zfs_for_each(argc - 2, argv + 2, 0,
3516             ZFS_TYPE_DATASET, NULL, NULL, 0, set_callback, &cb);
3517
3518         return (ret);
3519 }
3520
3521 typedef struct snap_cbdata {
3522         nvlist_t *sd_nvl;
3523         boolean_t sd_recursive;
3524         const char *sd_snapname;
3525 } snap_cbdata_t;
3526
3527 static int
3528 zfs_snapshot_cb(zfs_handle_t *zhp, void *arg)
3529 {
3530         snap_cbdata_t *sd = arg;
3531         char *name;
3532         int rv = 0;
3533         int error;
3534
3535         if (sd->sd_recursive &&
3536             zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) != 0) {
3537                 zfs_close(zhp);
3538                 return (0);
3539         }
3540
3541         error = asprintf(&name, "%s@%s", zfs_get_name(zhp), sd->sd_snapname);
3542         if (error == -1)
3543                 nomem();
3544         fnvlist_add_boolean(sd->sd_nvl, name);
3545         free(name);
3546
3547         if (sd->sd_recursive)
3548                 rv = zfs_iter_filesystems(zhp, zfs_snapshot_cb, sd);
3549         zfs_close(zhp);
3550         return (rv);
3551 }
3552
3553 /*
3554  * zfs snapshot [-r] [-o prop=value] ... <fs@snap>
3555  *
3556  * Creates a snapshot with the given name.  While functionally equivalent to
3557  * 'zfs create', it is a separate command to differentiate intent.
3558  */
3559 static int
3560 zfs_do_snapshot(int argc, char **argv)
3561 {
3562         int ret = 0;
3563         char c;
3564         nvlist_t *props;
3565         snap_cbdata_t sd = { 0 };
3566         boolean_t multiple_snaps = B_FALSE;
3567
3568         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
3569                 nomem();
3570         if (nvlist_alloc(&sd.sd_nvl, NV_UNIQUE_NAME, 0) != 0)
3571                 nomem();
3572
3573         /* check options */
3574         while ((c = getopt(argc, argv, "ro:")) != -1) {
3575                 switch (c) {
3576                 case 'o':
3577                         if (parseprop(props))
3578                                 return (1);
3579                         break;
3580                 case 'r':
3581                         sd.sd_recursive = B_TRUE;
3582                         multiple_snaps = B_TRUE;
3583                         break;
3584                 case '?':
3585                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3586                             optopt);
3587                         goto usage;
3588                 }
3589         }
3590
3591         argc -= optind;
3592         argv += optind;
3593
3594         /* check number of arguments */
3595         if (argc < 1) {
3596                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
3597                 goto usage;
3598         }
3599
3600         if (argc > 1)
3601                 multiple_snaps = B_TRUE;
3602         for (; argc > 0; argc--, argv++) {
3603                 char *atp;
3604                 zfs_handle_t *zhp;
3605
3606                 atp = strchr(argv[0], '@');
3607                 if (atp == NULL)
3608                         goto usage;
3609                 *atp = '\0';
3610                 sd.sd_snapname = atp + 1;
3611                 zhp = zfs_open(g_zfs, argv[0],
3612                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3613                 if (zhp == NULL)
3614                         goto usage;
3615                 if (zfs_snapshot_cb(zhp, &sd) != 0)
3616                         goto usage;
3617         }
3618
3619         ret = zfs_snapshot_nvl(g_zfs, sd.sd_nvl, props);
3620         nvlist_free(sd.sd_nvl);
3621         nvlist_free(props);
3622         if (ret != 0 && multiple_snaps)
3623                 (void) fprintf(stderr, gettext("no snapshots were created\n"));
3624         return (ret != 0);
3625
3626 usage:
3627         nvlist_free(sd.sd_nvl);
3628         nvlist_free(props);
3629         usage(B_FALSE);
3630         return (-1);
3631 }
3632
3633 /*
3634  * Send a backup stream to stdout.
3635  */
3636 static int
3637 zfs_do_send(int argc, char **argv)
3638 {
3639         char *fromname = NULL;
3640         char *toname = NULL;
3641         char *cp;
3642         zfs_handle_t *zhp;
3643         sendflags_t flags = { 0 };
3644         int c, err;
3645         nvlist_t *dbgnv = NULL;
3646         boolean_t extraverbose = B_FALSE;
3647
3648         /* check options */
3649         while ((c = getopt(argc, argv, ":i:I:RDpvnP")) != -1) {
3650                 switch (c) {
3651                 case 'i':
3652                         if (fromname)
3653                                 usage(B_FALSE);
3654                         fromname = optarg;
3655                         break;
3656                 case 'I':
3657                         if (fromname)
3658                                 usage(B_FALSE);
3659                         fromname = optarg;
3660                         flags.doall = B_TRUE;
3661                         break;
3662                 case 'R':
3663                         flags.replicate = B_TRUE;
3664                         break;
3665                 case 'p':
3666                         flags.props = B_TRUE;
3667                         break;
3668                 case 'P':
3669                         flags.parsable = B_TRUE;
3670                         flags.verbose = B_TRUE;
3671                         break;
3672                 case 'v':
3673                         if (flags.verbose)
3674                                 extraverbose = B_TRUE;
3675                         flags.verbose = B_TRUE;
3676                         flags.progress = B_TRUE;
3677                         break;
3678                 case 'D':
3679                         flags.dedup = B_TRUE;
3680                         break;
3681                 case 'n':
3682                         flags.dryrun = B_TRUE;
3683                         break;
3684                 case ':':
3685                         (void) fprintf(stderr, gettext("missing argument for "
3686                             "'%c' option\n"), optopt);
3687                         usage(B_FALSE);
3688                         break;
3689                 case '?':
3690                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3691                             optopt);
3692                         usage(B_FALSE);
3693                 }
3694         }
3695
3696         argc -= optind;
3697         argv += optind;
3698
3699         /* check number of arguments */
3700         if (argc < 1) {
3701                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
3702                 usage(B_FALSE);
3703         }
3704         if (argc > 1) {
3705                 (void) fprintf(stderr, gettext("too many arguments\n"));
3706                 usage(B_FALSE);
3707         }
3708
3709         if (!flags.dryrun && isatty(STDOUT_FILENO)) {
3710                 (void) fprintf(stderr,
3711                     gettext("Error: Stream can not be written to a terminal.\n"
3712                     "You must redirect standard output.\n"));
3713                 return (1);
3714         }
3715
3716         cp = strchr(argv[0], '@');
3717         if (cp == NULL) {
3718                 (void) fprintf(stderr,
3719                     gettext("argument must be a snapshot\n"));
3720                 usage(B_FALSE);
3721         }
3722         *cp = '\0';
3723         toname = cp + 1;
3724         zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3725         if (zhp == NULL)
3726                 return (1);
3727
3728         /*
3729          * If they specified the full path to the snapshot, chop off
3730          * everything except the short name of the snapshot, but special
3731          * case if they specify the origin.
3732          */
3733         if (fromname && (cp = strchr(fromname, '@')) != NULL) {
3734                 char origin[ZFS_MAXNAMELEN];
3735                 zprop_source_t src;
3736
3737                 (void) zfs_prop_get(zhp, ZFS_PROP_ORIGIN,
3738                     origin, sizeof (origin), &src, NULL, 0, B_FALSE);
3739
3740                 if (strcmp(origin, fromname) == 0) {
3741                         fromname = NULL;
3742                         flags.fromorigin = B_TRUE;
3743                 } else {
3744                         *cp = '\0';
3745                         if (cp != fromname && strcmp(argv[0], fromname)) {
3746                                 (void) fprintf(stderr,
3747                                     gettext("incremental source must be "
3748                                     "in same filesystem\n"));
3749                                 usage(B_FALSE);
3750                         }
3751                         fromname = cp + 1;
3752                         if (strchr(fromname, '@') || strchr(fromname, '/')) {
3753                                 (void) fprintf(stderr,
3754                                     gettext("invalid incremental source\n"));
3755                                 usage(B_FALSE);
3756                         }
3757                 }
3758         }
3759
3760         if (flags.replicate && fromname == NULL)
3761                 flags.doall = B_TRUE;
3762
3763         err = zfs_send(zhp, fromname, toname, &flags, STDOUT_FILENO, NULL, 0,
3764             extraverbose ? &dbgnv : NULL);
3765
3766         if (extraverbose && dbgnv != NULL) {
3767                 /*
3768                  * dump_nvlist prints to stdout, but that's been
3769                  * redirected to a file.  Make it print to stderr
3770                  * instead.
3771                  */
3772                 (void) dup2(STDERR_FILENO, STDOUT_FILENO);
3773                 dump_nvlist(dbgnv, 0);
3774                 nvlist_free(dbgnv);
3775         }
3776         zfs_close(zhp);
3777
3778         return (err != 0);
3779 }
3780
3781 /*
3782  * zfs receive [-vnFu] [-d | -e] <fs@snap>
3783  *
3784  * Restore a backup stream from stdin.
3785  */
3786 static int
3787 zfs_do_receive(int argc, char **argv)
3788 {
3789         int c, err;
3790         recvflags_t flags = { 0 };
3791
3792         /* check options */
3793         while ((c = getopt(argc, argv, ":denuvF")) != -1) {
3794                 switch (c) {
3795                 case 'd':
3796                         flags.isprefix = B_TRUE;
3797                         break;
3798                 case 'e':
3799                         flags.isprefix = B_TRUE;
3800                         flags.istail = B_TRUE;
3801                         break;
3802                 case 'n':
3803                         flags.dryrun = B_TRUE;
3804                         break;
3805                 case 'u':
3806                         flags.nomount = B_TRUE;
3807                         break;
3808                 case 'v':
3809                         flags.verbose = B_TRUE;
3810                         break;
3811                 case 'F':
3812                         flags.force = B_TRUE;
3813                         break;
3814                 case ':':
3815                         (void) fprintf(stderr, gettext("missing argument for "
3816                             "'%c' option\n"), optopt);
3817                         usage(B_FALSE);
3818                         break;
3819                 case '?':
3820                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3821                             optopt);
3822                         usage(B_FALSE);
3823                 }
3824         }
3825
3826         argc -= optind;
3827         argv += optind;
3828
3829         /* check number of arguments */
3830         if (argc < 1) {
3831                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
3832                 usage(B_FALSE);
3833         }
3834         if (argc > 1) {
3835                 (void) fprintf(stderr, gettext("too many arguments\n"));
3836                 usage(B_FALSE);
3837         }
3838
3839         if (isatty(STDIN_FILENO)) {
3840                 (void) fprintf(stderr,
3841                     gettext("Error: Backup stream can not be read "
3842                     "from a terminal.\n"
3843                     "You must redirect standard input.\n"));
3844                 return (1);
3845         }
3846
3847         err = zfs_receive(g_zfs, argv[0], &flags, STDIN_FILENO, NULL);
3848
3849         return (err != 0);
3850 }
3851
3852 /*
3853  * allow/unallow stuff
3854  */
3855 /* copied from zfs/sys/dsl_deleg.h */
3856 #define ZFS_DELEG_PERM_CREATE           "create"
3857 #define ZFS_DELEG_PERM_DESTROY          "destroy"
3858 #define ZFS_DELEG_PERM_SNAPSHOT         "snapshot"
3859 #define ZFS_DELEG_PERM_ROLLBACK         "rollback"
3860 #define ZFS_DELEG_PERM_CLONE            "clone"
3861 #define ZFS_DELEG_PERM_PROMOTE          "promote"
3862 #define ZFS_DELEG_PERM_RENAME           "rename"
3863 #define ZFS_DELEG_PERM_MOUNT            "mount"
3864 #define ZFS_DELEG_PERM_SHARE            "share"
3865 #define ZFS_DELEG_PERM_SEND             "send"
3866 #define ZFS_DELEG_PERM_RECEIVE          "receive"
3867 #define ZFS_DELEG_PERM_ALLOW            "allow"
3868 #define ZFS_DELEG_PERM_USERPROP         "userprop"
3869 #define ZFS_DELEG_PERM_VSCAN            "vscan" /* ??? */
3870 #define ZFS_DELEG_PERM_USERQUOTA        "userquota"
3871 #define ZFS_DELEG_PERM_GROUPQUOTA       "groupquota"
3872 #define ZFS_DELEG_PERM_USERUSED         "userused"
3873 #define ZFS_DELEG_PERM_GROUPUSED        "groupused"
3874 #define ZFS_DELEG_PERM_HOLD             "hold"
3875 #define ZFS_DELEG_PERM_RELEASE          "release"
3876 #define ZFS_DELEG_PERM_DIFF             "diff"
3877
3878 #define ZFS_NUM_DELEG_NOTES ZFS_DELEG_NOTE_NONE
3879
3880 static zfs_deleg_perm_tab_t zfs_deleg_perm_tbl[] = {
3881         { ZFS_DELEG_PERM_ALLOW, ZFS_DELEG_NOTE_ALLOW },
3882         { ZFS_DELEG_PERM_CLONE, ZFS_DELEG_NOTE_CLONE },
3883         { ZFS_DELEG_PERM_CREATE, ZFS_DELEG_NOTE_CREATE },
3884         { ZFS_DELEG_PERM_DESTROY, ZFS_DELEG_NOTE_DESTROY },
3885         { ZFS_DELEG_PERM_DIFF, ZFS_DELEG_NOTE_DIFF},
3886         { ZFS_DELEG_PERM_HOLD, ZFS_DELEG_NOTE_HOLD },
3887         { ZFS_DELEG_PERM_MOUNT, ZFS_DELEG_NOTE_MOUNT },
3888         { ZFS_DELEG_PERM_PROMOTE, ZFS_DELEG_NOTE_PROMOTE },
3889         { ZFS_DELEG_PERM_RECEIVE, ZFS_DELEG_NOTE_RECEIVE },
3890         { ZFS_DELEG_PERM_RELEASE, ZFS_DELEG_NOTE_RELEASE },
3891         { ZFS_DELEG_PERM_RENAME, ZFS_DELEG_NOTE_RENAME },
3892         { ZFS_DELEG_PERM_ROLLBACK, ZFS_DELEG_NOTE_ROLLBACK },
3893         { ZFS_DELEG_PERM_SEND, ZFS_DELEG_NOTE_SEND },
3894         { ZFS_DELEG_PERM_SHARE, ZFS_DELEG_NOTE_SHARE },
3895         { ZFS_DELEG_PERM_SNAPSHOT, ZFS_DELEG_NOTE_SNAPSHOT },
3896
3897         { ZFS_DELEG_PERM_GROUPQUOTA, ZFS_DELEG_NOTE_GROUPQUOTA },
3898         { ZFS_DELEG_PERM_GROUPUSED, ZFS_DELEG_NOTE_GROUPUSED },
3899         { ZFS_DELEG_PERM_USERPROP, ZFS_DELEG_NOTE_USERPROP },
3900         { ZFS_DELEG_PERM_USERQUOTA, ZFS_DELEG_NOTE_USERQUOTA },
3901         { ZFS_DELEG_PERM_USERUSED, ZFS_DELEG_NOTE_USERUSED },
3902         { NULL, ZFS_DELEG_NOTE_NONE }
3903 };
3904
3905 /* permission structure */
3906 typedef struct deleg_perm {
3907         zfs_deleg_who_type_t    dp_who_type;
3908         const char              *dp_name;
3909         boolean_t               dp_local;
3910         boolean_t               dp_descend;
3911 } deleg_perm_t;
3912
3913 /* */
3914 typedef struct deleg_perm_node {
3915         deleg_perm_t            dpn_perm;
3916
3917         uu_avl_node_t           dpn_avl_node;
3918 } deleg_perm_node_t;
3919
3920 typedef struct fs_perm fs_perm_t;
3921
3922 /* permissions set */
3923 typedef struct who_perm {
3924         zfs_deleg_who_type_t    who_type;
3925         const char              *who_name;              /* id */
3926         char                    who_ug_name[256];       /* user/group name */
3927         fs_perm_t               *who_fsperm;            /* uplink */
3928
3929         uu_avl_t                *who_deleg_perm_avl;    /* permissions */
3930 } who_perm_t;
3931
3932 /* */
3933 typedef struct who_perm_node {
3934         who_perm_t      who_perm;
3935         uu_avl_node_t   who_avl_node;
3936 } who_perm_node_t;
3937
3938 typedef struct fs_perm_set fs_perm_set_t;
3939 /* fs permissions */
3940 struct fs_perm {
3941         const char              *fsp_name;
3942
3943         uu_avl_t                *fsp_sc_avl;    /* sets,create */
3944         uu_avl_t                *fsp_uge_avl;   /* user,group,everyone */
3945
3946         fs_perm_set_t           *fsp_set;       /* uplink */
3947 };
3948
3949 /* */
3950 typedef struct fs_perm_node {
3951         fs_perm_t       fspn_fsperm;
3952         uu_avl_t        *fspn_avl;
3953
3954         uu_list_node_t  fspn_list_node;
3955 } fs_perm_node_t;
3956
3957 /* top level structure */
3958 struct fs_perm_set {
3959         uu_list_pool_t  *fsps_list_pool;
3960         uu_list_t       *fsps_list; /* list of fs_perms */
3961
3962         uu_avl_pool_t   *fsps_named_set_avl_pool;
3963         uu_avl_pool_t   *fsps_who_perm_avl_pool;
3964         uu_avl_pool_t   *fsps_deleg_perm_avl_pool;
3965 };
3966
3967 static inline const char *
3968 deleg_perm_type(zfs_deleg_note_t note)
3969 {
3970         /* subcommands */
3971         switch (note) {
3972                 /* SUBCOMMANDS */
3973                 /* OTHER */
3974         case ZFS_DELEG_NOTE_GROUPQUOTA:
3975         case ZFS_DELEG_NOTE_GROUPUSED:
3976         case ZFS_DELEG_NOTE_USERPROP:
3977         case ZFS_DELEG_NOTE_USERQUOTA:
3978         case ZFS_DELEG_NOTE_USERUSED:
3979                 /* other */
3980                 return (gettext("other"));
3981         default:
3982                 return (gettext("subcommand"));
3983         }
3984 }
3985
3986 static int inline
3987 who_type2weight(zfs_deleg_who_type_t who_type)
3988 {
3989         int res;
3990         switch (who_type) {
3991                 case ZFS_DELEG_NAMED_SET_SETS:
3992                 case ZFS_DELEG_NAMED_SET:
3993                         res = 0;
3994                         break;
3995                 case ZFS_DELEG_CREATE_SETS:
3996                 case ZFS_DELEG_CREATE:
3997                         res = 1;
3998                         break;
3999                 case ZFS_DELEG_USER_SETS:
4000                 case ZFS_DELEG_USER:
4001                         res = 2;
4002                         break;
4003                 case ZFS_DELEG_GROUP_SETS:
4004                 case ZFS_DELEG_GROUP:
4005                         res = 3;
4006                         break;
4007                 case ZFS_DELEG_EVERYONE_SETS:
4008                 case ZFS_DELEG_EVERYONE:
4009                         res = 4;
4010                         break;
4011                 default:
4012                         res = -1;
4013         }
4014
4015         return (res);
4016 }
4017
4018 /* ARGSUSED */
4019 static int
4020 who_perm_compare(const void *larg, const void *rarg, void *unused)
4021 {
4022         const who_perm_node_t *l = larg;
4023         const who_perm_node_t *r = rarg;
4024         zfs_deleg_who_type_t ltype = l->who_perm.who_type;
4025         zfs_deleg_who_type_t rtype = r->who_perm.who_type;
4026         int lweight = who_type2weight(ltype);
4027         int rweight = who_type2weight(rtype);
4028         int res = lweight - rweight;
4029         if (res == 0)
4030                 res = strncmp(l->who_perm.who_name, r->who_perm.who_name,
4031                     ZFS_MAX_DELEG_NAME-1);
4032
4033         if (res == 0)
4034                 return (0);
4035         if (res > 0)
4036                 return (1);
4037         else
4038                 return (-1);
4039 }
4040
4041 /* ARGSUSED */
4042 static int
4043 deleg_perm_compare(const void *larg, const void *rarg, void *unused)
4044 {
4045         const deleg_perm_node_t *l = larg;
4046         const deleg_perm_node_t *r = rarg;
4047         int res =  strncmp(l->dpn_perm.dp_name, r->dpn_perm.dp_name,
4048             ZFS_MAX_DELEG_NAME-1);
4049
4050         if (res == 0)
4051                 return (0);
4052
4053         if (res > 0)
4054                 return (1);
4055         else
4056                 return (-1);
4057 }
4058
4059 static inline void
4060 fs_perm_set_init(fs_perm_set_t *fspset)
4061 {
4062         bzero(fspset, sizeof (fs_perm_set_t));
4063
4064         if ((fspset->fsps_list_pool = uu_list_pool_create("fsps_list_pool",
4065             sizeof (fs_perm_node_t), offsetof(fs_perm_node_t, fspn_list_node),
4066             NULL, UU_DEFAULT)) == NULL)
4067                 nomem();
4068         if ((fspset->fsps_list = uu_list_create(fspset->fsps_list_pool, NULL,
4069             UU_DEFAULT)) == NULL)
4070                 nomem();
4071
4072         if ((fspset->fsps_named_set_avl_pool = uu_avl_pool_create(
4073             "named_set_avl_pool", sizeof (who_perm_node_t), offsetof(
4074             who_perm_node_t, who_avl_node), who_perm_compare,
4075             UU_DEFAULT)) == NULL)
4076                 nomem();
4077
4078         if ((fspset->fsps_who_perm_avl_pool = uu_avl_pool_create(
4079             "who_perm_avl_pool", sizeof (who_perm_node_t), offsetof(
4080             who_perm_node_t, who_avl_node), who_perm_compare,
4081             UU_DEFAULT)) == NULL)
4082                 nomem();
4083
4084         if ((fspset->fsps_deleg_perm_avl_pool = uu_avl_pool_create(
4085             "deleg_perm_avl_pool", sizeof (deleg_perm_node_t), offsetof(
4086             deleg_perm_node_t, dpn_avl_node), deleg_perm_compare, UU_DEFAULT))
4087             == NULL)
4088                 nomem();
4089 }
4090
4091 static inline void fs_perm_fini(fs_perm_t *);
4092 static inline void who_perm_fini(who_perm_t *);
4093
4094 static inline void
4095 fs_perm_set_fini(fs_perm_set_t *fspset)
4096 {
4097         fs_perm_node_t *node = uu_list_first(fspset->fsps_list);
4098
4099         while (node != NULL) {
4100                 fs_perm_node_t *next_node =
4101                     uu_list_next(fspset->fsps_list, node);
4102                 fs_perm_t *fsperm = &node->fspn_fsperm;
4103                 fs_perm_fini(fsperm);
4104                 uu_list_remove(fspset->fsps_list, node);
4105                 free(node);
4106                 node = next_node;
4107         }
4108
4109         uu_avl_pool_destroy(fspset->fsps_named_set_avl_pool);
4110         uu_avl_pool_destroy(fspset->fsps_who_perm_avl_pool);
4111         uu_avl_pool_destroy(fspset->fsps_deleg_perm_avl_pool);
4112 }
4113
4114 static inline void
4115 deleg_perm_init(deleg_perm_t *deleg_perm, zfs_deleg_who_type_t type,
4116     const char *name)
4117 {
4118         deleg_perm->dp_who_type = type;
4119         deleg_perm->dp_name = name;
4120 }
4121
4122 static inline void
4123 who_perm_init(who_perm_t *who_perm, fs_perm_t *fsperm,
4124     zfs_deleg_who_type_t type, const char *name)
4125 {
4126         uu_avl_pool_t   *pool;
4127         pool = fsperm->fsp_set->fsps_deleg_perm_avl_pool;
4128
4129         bzero(who_perm, sizeof (who_perm_t));
4130
4131         if ((who_perm->who_deleg_perm_avl = uu_avl_create(pool, NULL,
4132             UU_DEFAULT)) == NULL)
4133                 nomem();
4134
4135         who_perm->who_type = type;
4136         who_perm->who_name = name;
4137         who_perm->who_fsperm = fsperm;
4138 }
4139
4140 static inline void
4141 who_perm_fini(who_perm_t *who_perm)
4142 {
4143         deleg_perm_node_t *node = uu_avl_first(who_perm->who_deleg_perm_avl);
4144
4145         while (node != NULL) {
4146                 deleg_perm_node_t *next_node =
4147                     uu_avl_next(who_perm->who_deleg_perm_avl, node);
4148
4149                 uu_avl_remove(who_perm->who_deleg_perm_avl, node);
4150                 free(node);
4151                 node = next_node;
4152         }
4153
4154         uu_avl_destroy(who_perm->who_deleg_perm_avl);
4155 }
4156
4157 static inline void
4158 fs_perm_init(fs_perm_t *fsperm, fs_perm_set_t *fspset, const char *fsname)
4159 {
4160         uu_avl_pool_t   *nset_pool = fspset->fsps_named_set_avl_pool;
4161         uu_avl_pool_t   *who_pool = fspset->fsps_who_perm_avl_pool;
4162
4163         bzero(fsperm, sizeof (fs_perm_t));
4164
4165         if ((fsperm->fsp_sc_avl = uu_avl_create(nset_pool, NULL, UU_DEFAULT))
4166             == NULL)
4167                 nomem();
4168
4169         if ((fsperm->fsp_uge_avl = uu_avl_create(who_pool, NULL, UU_DEFAULT))
4170             == NULL)
4171                 nomem();
4172
4173         fsperm->fsp_set = fspset;
4174         fsperm->fsp_name = fsname;
4175 }
4176
4177 static inline void
4178 fs_perm_fini(fs_perm_t *fsperm)
4179 {
4180         who_perm_node_t *node = uu_avl_first(fsperm->fsp_sc_avl);
4181         while (node != NULL) {
4182                 who_perm_node_t *next_node = uu_avl_next(fsperm->fsp_sc_avl,
4183                     node);
4184                 who_perm_t *who_perm = &node->who_perm;
4185                 who_perm_fini(who_perm);
4186                 uu_avl_remove(fsperm->fsp_sc_avl, node);
4187                 free(node);
4188                 node = next_node;
4189         }
4190
4191         node = uu_avl_first(fsperm->fsp_uge_avl);
4192         while (node != NULL) {
4193                 who_perm_node_t *next_node = uu_avl_next(fsperm->fsp_uge_avl,
4194                     node);
4195                 who_perm_t *who_perm = &node->who_perm;
4196                 who_perm_fini(who_perm);
4197                 uu_avl_remove(fsperm->fsp_uge_avl, node);
4198                 free(node);
4199                 node = next_node;
4200         }
4201
4202         uu_avl_destroy(fsperm->fsp_sc_avl);
4203         uu_avl_destroy(fsperm->fsp_uge_avl);
4204 }
4205
4206 static void inline
4207 set_deleg_perm_node(uu_avl_t *avl, deleg_perm_node_t *node,
4208     zfs_deleg_who_type_t who_type, const char *name, char locality)
4209 {
4210         uu_avl_index_t idx = 0;
4211
4212         deleg_perm_node_t *found_node = NULL;
4213         deleg_perm_t    *deleg_perm = &node->dpn_perm;
4214
4215         deleg_perm_init(deleg_perm, who_type, name);
4216
4217         if ((found_node = uu_avl_find(avl, node, NULL, &idx))
4218             == NULL)
4219                 uu_avl_insert(avl, node, idx);
4220         else {
4221                 node = found_node;
4222                 deleg_perm = &node->dpn_perm;
4223         }
4224
4225
4226         switch (locality) {
4227         case ZFS_DELEG_LOCAL:
4228                 deleg_perm->dp_local = B_TRUE;
4229                 break;
4230         case ZFS_DELEG_DESCENDENT:
4231                 deleg_perm->dp_descend = B_TRUE;
4232                 break;
4233         case ZFS_DELEG_NA:
4234                 break;
4235         default:
4236                 assert(B_FALSE); /* invalid locality */
4237         }
4238 }
4239
4240 static inline int
4241 parse_who_perm(who_perm_t *who_perm, nvlist_t *nvl, char locality)
4242 {
4243         nvpair_t *nvp = NULL;
4244         fs_perm_set_t *fspset = who_perm->who_fsperm->fsp_set;
4245         uu_avl_t *avl = who_perm->who_deleg_perm_avl;
4246         zfs_deleg_who_type_t who_type = who_perm->who_type;
4247
4248         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4249                 const char *name = nvpair_name(nvp);
4250                 data_type_t type = nvpair_type(nvp);
4251                 uu_avl_pool_t *avl_pool = fspset->fsps_deleg_perm_avl_pool;
4252                 deleg_perm_node_t *node =
4253                     safe_malloc(sizeof (deleg_perm_node_t));
4254
4255                 assert(type == DATA_TYPE_BOOLEAN);
4256
4257                 uu_avl_node_init(node, &node->dpn_avl_node, avl_pool);
4258                 set_deleg_perm_node(avl, node, who_type, name, locality);
4259         }
4260
4261         return (0);
4262 }
4263
4264 static inline int
4265 parse_fs_perm(fs_perm_t *fsperm, nvlist_t *nvl)
4266 {
4267         nvpair_t *nvp = NULL;
4268         fs_perm_set_t *fspset = fsperm->fsp_set;
4269
4270         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4271                 nvlist_t *nvl2 = NULL;
4272                 const char *name = nvpair_name(nvp);
4273                 uu_avl_t *avl = NULL;
4274                 uu_avl_pool_t *avl_pool;
4275                 zfs_deleg_who_type_t perm_type = name[0];
4276                 char perm_locality = name[1];
4277                 const char *perm_name = name + 3;
4278                 boolean_t is_set = B_TRUE;
4279                 who_perm_t *who_perm = NULL;
4280
4281                 assert('$' == name[2]);
4282
4283                 if (nvpair_value_nvlist(nvp, &nvl2) != 0)
4284                         return (-1);
4285
4286                 switch (perm_type) {
4287                 case ZFS_DELEG_CREATE:
4288                 case ZFS_DELEG_CREATE_SETS:
4289                 case ZFS_DELEG_NAMED_SET:
4290                 case ZFS_DELEG_NAMED_SET_SETS:
4291                         avl_pool = fspset->fsps_named_set_avl_pool;
4292                         avl = fsperm->fsp_sc_avl;
4293                         break;
4294                 case ZFS_DELEG_USER:
4295                 case ZFS_DELEG_USER_SETS:
4296                 case ZFS_DELEG_GROUP:
4297                 case ZFS_DELEG_GROUP_SETS:
4298                 case ZFS_DELEG_EVERYONE:
4299                 case ZFS_DELEG_EVERYONE_SETS:
4300                         avl_pool = fspset->fsps_who_perm_avl_pool;
4301                         avl = fsperm->fsp_uge_avl;
4302                         break;
4303                 }
4304
4305                 if (is_set) {
4306                         who_perm_node_t *found_node = NULL;
4307                         who_perm_node_t *node = safe_malloc(
4308                             sizeof (who_perm_node_t));
4309                         who_perm = &node->who_perm;
4310                         uu_avl_index_t idx = 0;
4311
4312                         uu_avl_node_init(node, &node->who_avl_node, avl_pool);
4313                         who_perm_init(who_perm, fsperm, perm_type, perm_name);
4314
4315                         if ((found_node = uu_avl_find(avl, node, NULL, &idx))
4316                             == NULL) {
4317                                 if (avl == fsperm->fsp_uge_avl) {
4318                                         uid_t rid = 0;
4319                                         struct passwd *p = NULL;
4320                                         struct group *g = NULL;
4321                                         const char *nice_name = NULL;
4322
4323                                         switch (perm_type) {
4324                                         case ZFS_DELEG_USER_SETS:
4325                                         case ZFS_DELEG_USER:
4326                                                 rid = atoi(perm_name);
4327                                                 p = getpwuid(rid);
4328                                                 if (p)
4329                                                         nice_name = p->pw_name;
4330                                                 break;
4331                                         case ZFS_DELEG_GROUP_SETS:
4332                                         case ZFS_DELEG_GROUP:
4333                                                 rid = atoi(perm_name);
4334                                                 g = getgrgid(rid);
4335                                                 if (g)
4336                                                         nice_name = g->gr_name;
4337                                                 break;
4338                                         }
4339
4340                                         if (nice_name != NULL)
4341                                                 (void) strlcpy(
4342                                                     node->who_perm.who_ug_name,
4343                                                     nice_name, 256);
4344                                 }
4345
4346                                 uu_avl_insert(avl, node, idx);
4347                         } else {
4348                                 node = found_node;
4349                                 who_perm = &node->who_perm;
4350                         }
4351                 }
4352
4353                 (void) parse_who_perm(who_perm, nvl2, perm_locality);
4354         }
4355
4356         return (0);
4357 }
4358
4359 static inline int
4360 parse_fs_perm_set(fs_perm_set_t *fspset, nvlist_t *nvl)
4361 {
4362         nvpair_t *nvp = NULL;
4363         uu_avl_index_t idx = 0;
4364
4365         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4366                 nvlist_t *nvl2 = NULL;
4367                 const char *fsname = nvpair_name(nvp);
4368                 data_type_t type = nvpair_type(nvp);
4369                 fs_perm_t *fsperm = NULL;
4370                 fs_perm_node_t *node = safe_malloc(sizeof (fs_perm_node_t));
4371                 if (node == NULL)
4372                         nomem();
4373
4374                 fsperm = &node->fspn_fsperm;
4375
4376                 assert(DATA_TYPE_NVLIST == type);
4377
4378                 uu_list_node_init(node, &node->fspn_list_node,
4379                     fspset->fsps_list_pool);
4380
4381                 idx = uu_list_numnodes(fspset->fsps_list);
4382                 fs_perm_init(fsperm, fspset, fsname);
4383
4384                 if (nvpair_value_nvlist(nvp, &nvl2) != 0)
4385                         return (-1);
4386
4387                 (void) parse_fs_perm(fsperm, nvl2);
4388
4389                 uu_list_insert(fspset->fsps_list, node, idx);
4390         }
4391
4392         return (0);
4393 }
4394
4395 static inline const char *
4396 deleg_perm_comment(zfs_deleg_note_t note)
4397 {
4398         const char *str = "";
4399
4400         /* subcommands */
4401         switch (note) {
4402                 /* SUBCOMMANDS */
4403         case ZFS_DELEG_NOTE_ALLOW:
4404                 str = gettext("Must also have the permission that is being"
4405                     "\n\t\t\t\tallowed");
4406                 break;
4407         case ZFS_DELEG_NOTE_CLONE:
4408                 str = gettext("Must also have the 'create' ability and 'mount'"
4409                     "\n\t\t\t\tability in the origin file system");
4410                 break;
4411         case ZFS_DELEG_NOTE_CREATE:
4412                 str = gettext("Must also have the 'mount' ability");
4413                 break;
4414         case ZFS_DELEG_NOTE_DESTROY:
4415                 str = gettext("Must also have the 'mount' ability");
4416                 break;
4417         case ZFS_DELEG_NOTE_DIFF:
4418                 str = gettext("Allows lookup of paths within a dataset;"
4419                     "\n\t\t\t\tgiven an object number. Ordinary users need this"
4420                     "\n\t\t\t\tin order to use zfs diff");
4421                 break;
4422         case ZFS_DELEG_NOTE_HOLD:
4423                 str = gettext("Allows adding a user hold to a snapshot");
4424                 break;
4425         case ZFS_DELEG_NOTE_MOUNT:
4426                 str = gettext("Allows mount/umount of ZFS datasets");
4427                 break;
4428         case ZFS_DELEG_NOTE_PROMOTE:
4429                 str = gettext("Must also have the 'mount'\n\t\t\t\tand"
4430                     " 'promote' ability in the origin file system");
4431                 break;
4432         case ZFS_DELEG_NOTE_RECEIVE:
4433                 str = gettext("Must also have the 'mount' and 'create'"
4434                     " ability");
4435                 break;
4436         case ZFS_DELEG_NOTE_RELEASE:
4437                 str = gettext("Allows releasing a user hold which\n\t\t\t\t"
4438                     "might destroy the snapshot");
4439                 break;
4440         case ZFS_DELEG_NOTE_RENAME:
4441                 str = gettext("Must also have the 'mount' and 'create'"
4442                     "\n\t\t\t\tability in the new parent");
4443                 break;
4444         case ZFS_DELEG_NOTE_ROLLBACK:
4445                 str = gettext("");
4446                 break;
4447         case ZFS_DELEG_NOTE_SEND:
4448                 str = gettext("");
4449                 break;
4450         case ZFS_DELEG_NOTE_SHARE:
4451                 str = gettext("Allows sharing file systems over NFS or SMB"
4452                     "\n\t\t\t\tprotocols");
4453                 break;
4454         case ZFS_DELEG_NOTE_SNAPSHOT:
4455                 str = gettext("");
4456                 break;
4457 /*
4458  *      case ZFS_DELEG_NOTE_VSCAN:
4459  *              str = gettext("");
4460  *              break;
4461  */
4462                 /* OTHER */
4463         case ZFS_DELEG_NOTE_GROUPQUOTA:
4464                 str = gettext("Allows accessing any groupquota@... property");
4465                 break;
4466         case ZFS_DELEG_NOTE_GROUPUSED:
4467                 str = gettext("Allows reading any groupused@... property");
4468                 break;
4469         case ZFS_DELEG_NOTE_USERPROP:
4470                 str = gettext("Allows changing any user property");
4471                 break;
4472         case ZFS_DELEG_NOTE_USERQUOTA:
4473                 str = gettext("Allows accessing any userquota@... property");
4474                 break;
4475         case ZFS_DELEG_NOTE_USERUSED:
4476                 str = gettext("Allows reading any userused@... property");
4477                 break;
4478                 /* other */
4479         default:
4480                 str = "";
4481         }
4482
4483         return (str);
4484 }
4485
4486 struct allow_opts {
4487         boolean_t local;
4488         boolean_t descend;
4489         boolean_t user;
4490         boolean_t group;
4491         boolean_t everyone;
4492         boolean_t create;
4493         boolean_t set;
4494         boolean_t recursive; /* unallow only */
4495         boolean_t prt_usage;
4496
4497         boolean_t prt_perms;
4498         char *who;
4499         char *perms;
4500         const char *dataset;
4501 };
4502
4503 static inline int
4504 prop_cmp(const void *a, const void *b)
4505 {
4506         const char *str1 = *(const char **)a;
4507         const char *str2 = *(const char **)b;
4508         return (strcmp(str1, str2));
4509 }
4510
4511 static void
4512 allow_usage(boolean_t un, boolean_t requested, const char *msg)
4513 {
4514         const char *opt_desc[] = {
4515                 "-h", gettext("show this help message and exit"),
4516                 "-l", gettext("set permission locally"),
4517                 "-d", gettext("set permission for descents"),
4518                 "-u", gettext("set permission for user"),
4519                 "-g", gettext("set permission for group"),
4520                 "-e", gettext("set permission for everyone"),
4521                 "-c", gettext("set create time permission"),
4522                 "-s", gettext("define permission set"),
4523                 /* unallow only */
4524                 "-r", gettext("remove permissions recursively"),
4525         };
4526         size_t unallow_size = sizeof (opt_desc) / sizeof (char *);
4527         size_t allow_size = unallow_size - 2;
4528         const char *props[ZFS_NUM_PROPS];
4529         int i;
4530         size_t count = 0;
4531         FILE *fp = requested ? stdout : stderr;
4532         zprop_desc_t *pdtbl = zfs_prop_get_table();
4533         const char *fmt = gettext("%-16s %-14s\t%s\n");
4534
4535         (void) fprintf(fp, gettext("Usage: %s\n"), get_usage(un ? HELP_UNALLOW :
4536             HELP_ALLOW));
4537         (void) fprintf(fp, gettext("Options:\n"));
4538         for (i = 0; i < (un ? unallow_size : allow_size); i++) {
4539                 const char *opt = opt_desc[i++];
4540                 const char *optdsc = opt_desc[i];
4541                 (void) fprintf(fp, gettext("  %-10s  %s\n"), opt, optdsc);
4542         }
4543
4544         (void) fprintf(fp, gettext("\nThe following permissions are "
4545             "supported:\n\n"));
4546         (void) fprintf(fp, fmt, gettext("NAME"), gettext("TYPE"),
4547             gettext("NOTES"));
4548         for (i = 0; i < ZFS_NUM_DELEG_NOTES; i++) {
4549                 const char *perm_name = zfs_deleg_perm_tbl[i].z_perm;
4550                 zfs_deleg_note_t perm_note = zfs_deleg_perm_tbl[i].z_note;
4551                 const char *perm_type = deleg_perm_type(perm_note);
4552                 const char *perm_comment = deleg_perm_comment(perm_note);
4553                 (void) fprintf(fp, fmt, perm_name, perm_type, perm_comment);
4554         }
4555
4556         for (i = 0; i < ZFS_NUM_PROPS; i++) {
4557                 zprop_desc_t *pd = &pdtbl[i];
4558                 if (pd->pd_visible != B_TRUE)
4559                         continue;
4560
4561                 if (pd->pd_attr == PROP_READONLY)
4562                         continue;
4563
4564                 props[count++] = pd->pd_name;
4565         }
4566         props[count] = NULL;
4567
4568         qsort(props, count, sizeof (char *), prop_cmp);
4569
4570         for (i = 0; i < count; i++)
4571                 (void) fprintf(fp, fmt, props[i], gettext("property"), "");
4572
4573         if (msg != NULL)
4574                 (void) fprintf(fp, gettext("\nzfs: error: %s"), msg);
4575
4576         exit(requested ? 0 : 2);
4577 }
4578
4579 static inline const char *
4580 munge_args(int argc, char **argv, boolean_t un, size_t expected_argc,
4581     char **permsp)
4582 {
4583         if (un && argc == expected_argc - 1)
4584                 *permsp = NULL;
4585         else if (argc == expected_argc)
4586                 *permsp = argv[argc - 2];
4587         else
4588                 allow_usage(un, B_FALSE,
4589                     gettext("wrong number of parameters\n"));
4590
4591         return (argv[argc - 1]);
4592 }
4593
4594 static void
4595 parse_allow_args(int argc, char **argv, boolean_t un, struct allow_opts *opts)
4596 {
4597         int uge_sum = opts->user + opts->group + opts->everyone;
4598         int csuge_sum = opts->create + opts->set + uge_sum;
4599         int ldcsuge_sum = csuge_sum + opts->local + opts->descend;
4600         int all_sum = un ? ldcsuge_sum + opts->recursive : ldcsuge_sum;
4601
4602         if (uge_sum > 1)
4603                 allow_usage(un, B_FALSE,
4604                     gettext("-u, -g, and -e are mutually exclusive\n"));
4605
4606         if (opts->prt_usage)
4607                 if (argc == 0 && all_sum == 0)
4608                         allow_usage(un, B_TRUE, NULL);
4609                 else
4610                         usage(B_FALSE);
4611
4612         if (opts->set) {
4613                 if (csuge_sum > 1)
4614                         allow_usage(un, B_FALSE,
4615                             gettext("invalid options combined with -s\n"));
4616
4617                 opts->dataset = munge_args(argc, argv, un, 3, &opts->perms);
4618                 if (argv[0][0] != '@')
4619                         allow_usage(un, B_FALSE,
4620                             gettext("invalid set name: missing '@' prefix\n"));
4621                 opts->who = argv[0];
4622         } else if (opts->create) {
4623                 if (ldcsuge_sum > 1)
4624                         allow_usage(un, B_FALSE,
4625                             gettext("invalid options combined with -c\n"));
4626                 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
4627         } else if (opts->everyone) {
4628                 if (csuge_sum > 1)
4629                         allow_usage(un, B_FALSE,
4630                             gettext("invalid options combined with -e\n"));
4631                 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
4632         } else if (uge_sum == 0 && argc > 0 && strcmp(argv[0], "everyone")
4633             == 0) {
4634                 opts->everyone = B_TRUE;
4635                 argc--;
4636                 argv++;
4637                 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
4638         } else if (argc == 1 && !un) {
4639                 opts->prt_perms = B_TRUE;
4640                 opts->dataset = argv[argc-1];
4641         } else {
4642                 opts->dataset = munge_args(argc, argv, un, 3, &opts->perms);
4643                 opts->who = argv[0];
4644         }
4645
4646         if (!opts->local && !opts->descend) {
4647                 opts->local = B_TRUE;
4648                 opts->descend = B_TRUE;
4649         }
4650 }
4651
4652 static void
4653 store_allow_perm(zfs_deleg_who_type_t type, boolean_t local, boolean_t descend,
4654     const char *who, char *perms, nvlist_t *top_nvl)
4655 {
4656         int i;
4657         char ld[2] = { '\0', '\0' };
4658         char who_buf[ZFS_MAXNAMELEN+32];
4659         char base_type;
4660         char set_type;
4661         nvlist_t *base_nvl = NULL;
4662         nvlist_t *set_nvl = NULL;
4663         nvlist_t *nvl;
4664
4665         if (nvlist_alloc(&base_nvl, NV_UNIQUE_NAME, 0) != 0)
4666                 nomem();
4667         if (nvlist_alloc(&set_nvl, NV_UNIQUE_NAME, 0) !=  0)
4668                 nomem();
4669
4670         switch (type) {
4671         case ZFS_DELEG_NAMED_SET_SETS:
4672         case ZFS_DELEG_NAMED_SET:
4673                 set_type = ZFS_DELEG_NAMED_SET_SETS;
4674                 base_type = ZFS_DELEG_NAMED_SET;
4675                 ld[0] = ZFS_DELEG_NA;
4676                 break;
4677         case ZFS_DELEG_CREATE_SETS:
4678         case ZFS_DELEG_CREATE:
4679                 set_type = ZFS_DELEG_CREATE_SETS;
4680                 base_type = ZFS_DELEG_CREATE;
4681                 ld[0] = ZFS_DELEG_NA;
4682                 break;
4683         case ZFS_DELEG_USER_SETS:
4684         case ZFS_DELEG_USER:
4685                 set_type = ZFS_DELEG_USER_SETS;
4686                 base_type = ZFS_DELEG_USER;
4687                 if (local)
4688                         ld[0] = ZFS_DELEG_LOCAL;
4689                 if (descend)
4690                         ld[1] = ZFS_DELEG_DESCENDENT;
4691                 break;
4692         case ZFS_DELEG_GROUP_SETS:
4693         case ZFS_DELEG_GROUP:
4694                 set_type = ZFS_DELEG_GROUP_SETS;
4695                 base_type = ZFS_DELEG_GROUP;
4696                 if (local)
4697                         ld[0] = ZFS_DELEG_LOCAL;
4698                 if (descend)
4699                         ld[1] = ZFS_DELEG_DESCENDENT;
4700                 break;
4701         case ZFS_DELEG_EVERYONE_SETS:
4702         case ZFS_DELEG_EVERYONE:
4703                 set_type = ZFS_DELEG_EVERYONE_SETS;
4704                 base_type = ZFS_DELEG_EVERYONE;
4705                 if (local)
4706                         ld[0] = ZFS_DELEG_LOCAL;
4707                 if (descend)
4708                         ld[1] = ZFS_DELEG_DESCENDENT;
4709         }
4710
4711         if (perms != NULL) {
4712                 char *curr = perms;
4713                 char *end = curr + strlen(perms);
4714
4715                 while (curr < end) {
4716                         char *delim = strchr(curr, ',');
4717                         if (delim == NULL)
4718                                 delim = end;
4719                         else
4720                                 *delim = '\0';
4721
4722                         if (curr[0] == '@')
4723                                 nvl = set_nvl;
4724                         else
4725                                 nvl = base_nvl;
4726
4727                         (void) nvlist_add_boolean(nvl, curr);
4728                         if (delim != end)
4729                                 *delim = ',';
4730                         curr = delim + 1;
4731                 }
4732
4733                 for (i = 0; i < 2; i++) {
4734                         char locality = ld[i];
4735                         if (locality == 0)
4736                                 continue;
4737
4738                         if (!nvlist_empty(base_nvl)) {
4739                                 if (who != NULL)
4740                                         (void) snprintf(who_buf,
4741                                             sizeof (who_buf), "%c%c$%s",
4742                                             base_type, locality, who);
4743                                 else
4744                                         (void) snprintf(who_buf,
4745                                             sizeof (who_buf), "%c%c$",
4746                                             base_type, locality);
4747
4748                                 (void) nvlist_add_nvlist(top_nvl, who_buf,
4749                                     base_nvl);
4750                         }
4751
4752
4753                         if (!nvlist_empty(set_nvl)) {
4754                                 if (who != NULL)
4755                                         (void) snprintf(who_buf,
4756                                             sizeof (who_buf), "%c%c$%s",
4757                                             set_type, locality, who);
4758                                 else
4759                                         (void) snprintf(who_buf,
4760                                             sizeof (who_buf), "%c%c$",
4761                                             set_type, locality);
4762
4763                                 (void) nvlist_add_nvlist(top_nvl, who_buf,
4764                                     set_nvl);
4765                         }
4766                 }
4767         } else {
4768                 for (i = 0; i < 2; i++) {
4769                         char locality = ld[i];
4770                         if (locality == 0)
4771                                 continue;
4772
4773                         if (who != NULL)
4774                                 (void) snprintf(who_buf, sizeof (who_buf),
4775                                     "%c%c$%s", base_type, locality, who);
4776                         else
4777                                 (void) snprintf(who_buf, sizeof (who_buf),
4778                                     "%c%c$", base_type, locality);
4779                         (void) nvlist_add_boolean(top_nvl, who_buf);
4780
4781                         if (who != NULL)
4782                                 (void) snprintf(who_buf, sizeof (who_buf),
4783                                     "%c%c$%s", set_type, locality, who);
4784                         else
4785                                 (void) snprintf(who_buf, sizeof (who_buf),
4786                                     "%c%c$", set_type, locality);
4787                         (void) nvlist_add_boolean(top_nvl, who_buf);
4788                 }
4789         }
4790 }
4791
4792 static int
4793 construct_fsacl_list(boolean_t un, struct allow_opts *opts, nvlist_t **nvlp)
4794 {
4795         if (nvlist_alloc(nvlp, NV_UNIQUE_NAME, 0) != 0)
4796                 nomem();
4797
4798         if (opts->set) {
4799                 store_allow_perm(ZFS_DELEG_NAMED_SET, opts->local,
4800                     opts->descend, opts->who, opts->perms, *nvlp);
4801         } else if (opts->create) {
4802                 store_allow_perm(ZFS_DELEG_CREATE, opts->local,
4803                     opts->descend, NULL, opts->perms, *nvlp);
4804         } else if (opts->everyone) {
4805                 store_allow_perm(ZFS_DELEG_EVERYONE, opts->local,
4806                     opts->descend, NULL, opts->perms, *nvlp);
4807         } else {
4808                 char *curr = opts->who;
4809                 char *end = curr + strlen(curr);
4810
4811                 while (curr < end) {
4812                         const char *who;
4813                         zfs_deleg_who_type_t who_type;
4814                         char *endch;
4815                         char *delim = strchr(curr, ',');
4816                         char errbuf[256];
4817                         char id[64];
4818                         struct passwd *p = NULL;
4819                         struct group *g = NULL;
4820
4821                         uid_t rid;
4822                         if (delim == NULL)
4823                                 delim = end;
4824                         else
4825                                 *delim = '\0';
4826
4827                         rid = (uid_t)strtol(curr, &endch, 0);
4828                         if (opts->user) {
4829                                 who_type = ZFS_DELEG_USER;
4830                                 if (*endch != '\0')
4831                                         p = getpwnam(curr);
4832                                 else
4833                                         p = getpwuid(rid);
4834
4835                                 if (p != NULL)
4836                                         rid = p->pw_uid;
4837                                 else {
4838                                         (void) snprintf(errbuf, 256, gettext(
4839                                             "invalid user %s"), curr);
4840                                         allow_usage(un, B_TRUE, errbuf);
4841                                 }
4842                         } else if (opts->group) {
4843                                 who_type = ZFS_DELEG_GROUP;
4844                                 if (*endch != '\0')
4845                                         g = getgrnam(curr);
4846                                 else
4847                                         g = getgrgid(rid);
4848
4849                                 if (g != NULL)
4850                                         rid = g->gr_gid;
4851                                 else {
4852                                         (void) snprintf(errbuf, 256, gettext(
4853                                             "invalid group %s"),  curr);
4854                                         allow_usage(un, B_TRUE, errbuf);
4855                                 }
4856                         } else {
4857                                 if (*endch != '\0') {
4858                                         p = getpwnam(curr);
4859                                 } else {
4860                                         p = getpwuid(rid);
4861                                 }
4862
4863                                 if (p == NULL)
4864                                         if (*endch != '\0') {
4865                                                 g = getgrnam(curr);
4866                                         } else {
4867                                                 g = getgrgid(rid);
4868                                         }
4869
4870                                 if (p != NULL) {
4871                                         who_type = ZFS_DELEG_USER;
4872                                         rid = p->pw_uid;
4873                                 } else if (g != NULL) {
4874                                         who_type = ZFS_DELEG_GROUP;
4875                                         rid = g->gr_gid;
4876                                 } else {
4877                                         (void) snprintf(errbuf, 256, gettext(
4878                                             "invalid user/group %s"), curr);
4879                                         allow_usage(un, B_TRUE, errbuf);
4880                                 }
4881                         }
4882
4883                         (void) sprintf(id, "%u", rid);
4884                         who = id;
4885
4886                         store_allow_perm(who_type, opts->local,
4887                             opts->descend, who, opts->perms, *nvlp);
4888                         curr = delim + 1;
4889                 }
4890         }
4891
4892         return (0);
4893 }
4894
4895 static void
4896 print_set_creat_perms(uu_avl_t *who_avl)
4897 {
4898         const char *sc_title[] = {
4899                 gettext("Permission sets:\n"),
4900                 gettext("Create time permissions:\n"),
4901                 NULL
4902         };
4903         const char **title_ptr = sc_title;
4904         who_perm_node_t *who_node = NULL;
4905         int prev_weight = -1;
4906
4907         for (who_node = uu_avl_first(who_avl); who_node != NULL;
4908             who_node = uu_avl_next(who_avl, who_node)) {
4909                 uu_avl_t *avl = who_node->who_perm.who_deleg_perm_avl;
4910                 zfs_deleg_who_type_t who_type = who_node->who_perm.who_type;
4911                 const char *who_name = who_node->who_perm.who_name;
4912                 int weight = who_type2weight(who_type);
4913                 boolean_t first = B_TRUE;
4914                 deleg_perm_node_t *deleg_node;
4915
4916                 if (prev_weight != weight) {
4917                         (void) printf(*title_ptr++);
4918                         prev_weight = weight;
4919                 }
4920
4921                 if (who_name == NULL || strnlen(who_name, 1) == 0)
4922                         (void) printf("\t");
4923                 else
4924                         (void) printf("\t%s ", who_name);
4925
4926                 for (deleg_node = uu_avl_first(avl); deleg_node != NULL;
4927                     deleg_node = uu_avl_next(avl, deleg_node)) {
4928                         if (first) {
4929                                 (void) printf("%s",
4930                                     deleg_node->dpn_perm.dp_name);
4931                                 first = B_FALSE;
4932                         } else
4933                                 (void) printf(",%s",
4934                                     deleg_node->dpn_perm.dp_name);
4935                 }
4936
4937                 (void) printf("\n");
4938         }
4939 }
4940
4941 static void inline
4942 print_uge_deleg_perms(uu_avl_t *who_avl, boolean_t local, boolean_t descend,
4943     const char *title)
4944 {
4945         who_perm_node_t *who_node = NULL;
4946         boolean_t prt_title = B_TRUE;
4947         uu_avl_walk_t *walk;
4948
4949         if ((walk = uu_avl_walk_start(who_avl, UU_WALK_ROBUST)) == NULL)
4950                 nomem();
4951
4952         while ((who_node = uu_avl_walk_next(walk)) != NULL) {
4953                 const char *who_name = who_node->who_perm.who_name;
4954                 const char *nice_who_name = who_node->who_perm.who_ug_name;
4955                 uu_avl_t *avl = who_node->who_perm.who_deleg_perm_avl;
4956                 zfs_deleg_who_type_t who_type = who_node->who_perm.who_type;
4957                 char delim = ' ';
4958                 deleg_perm_node_t *deleg_node;
4959                 boolean_t prt_who = B_TRUE;
4960
4961                 for (deleg_node = uu_avl_first(avl);
4962                     deleg_node != NULL;
4963                     deleg_node = uu_avl_next(avl, deleg_node)) {
4964                         if (local != deleg_node->dpn_perm.dp_local ||
4965                             descend != deleg_node->dpn_perm.dp_descend)
4966                                 continue;
4967
4968                         if (prt_who) {
4969                                 const char *who = NULL;
4970                                 if (prt_title) {
4971                                         prt_title = B_FALSE;
4972                                         (void) printf(title);
4973                                 }
4974
4975                                 switch (who_type) {
4976                                 case ZFS_DELEG_USER_SETS:
4977                                 case ZFS_DELEG_USER:
4978                                         who = gettext("user");
4979                                         if (nice_who_name)
4980                                                 who_name  = nice_who_name;
4981                                         break;
4982                                 case ZFS_DELEG_GROUP_SETS:
4983                                 case ZFS_DELEG_GROUP:
4984                                         who = gettext("group");
4985                                         if (nice_who_name)
4986                                                 who_name  = nice_who_name;
4987                                         break;
4988                                 case ZFS_DELEG_EVERYONE_SETS:
4989                                 case ZFS_DELEG_EVERYONE:
4990                                         who = gettext("everyone");
4991                                         who_name = NULL;
4992                                 }
4993
4994                                 prt_who = B_FALSE;
4995                                 if (who_name == NULL)
4996                                         (void) printf("\t%s", who);
4997                                 else
4998                                         (void) printf("\t%s %s", who, who_name);
4999                         }
5000
5001                         (void) printf("%c%s", delim,
5002                             deleg_node->dpn_perm.dp_name);
5003                         delim = ',';
5004                 }
5005
5006                 if (!prt_who)
5007                         (void) printf("\n");
5008         }
5009
5010         uu_avl_walk_end(walk);
5011 }
5012
5013 static void
5014 print_fs_perms(fs_perm_set_t *fspset)
5015 {
5016         fs_perm_node_t *node = NULL;
5017         char buf[ZFS_MAXNAMELEN+32];
5018         const char *dsname = buf;
5019
5020         for (node = uu_list_first(fspset->fsps_list); node != NULL;
5021             node = uu_list_next(fspset->fsps_list, node)) {
5022                 uu_avl_t *sc_avl = node->fspn_fsperm.fsp_sc_avl;
5023                 uu_avl_t *uge_avl = node->fspn_fsperm.fsp_uge_avl;
5024                 int left = 0;
5025
5026                 (void) snprintf(buf, ZFS_MAXNAMELEN+32,
5027                     gettext("---- Permissions on %s "),
5028                     node->fspn_fsperm.fsp_name);
5029                 (void) printf(dsname);
5030                 left = 70 - strlen(buf);
5031                 while (left-- > 0)
5032                         (void) printf("-");
5033                 (void) printf("\n");
5034
5035                 print_set_creat_perms(sc_avl);
5036                 print_uge_deleg_perms(uge_avl, B_TRUE, B_FALSE,
5037                     gettext("Local permissions:\n"));
5038                 print_uge_deleg_perms(uge_avl, B_FALSE, B_TRUE,
5039                     gettext("Descendent permissions:\n"));
5040                 print_uge_deleg_perms(uge_avl, B_TRUE, B_TRUE,
5041                     gettext("Local+Descendent permissions:\n"));
5042         }
5043 }
5044
5045 static fs_perm_set_t fs_perm_set = { NULL, NULL, NULL, NULL };
5046
5047 struct deleg_perms {
5048         boolean_t un;
5049         nvlist_t *nvl;
5050 };
5051
5052 static int
5053 set_deleg_perms(zfs_handle_t *zhp, void *data)
5054 {
5055         struct deleg_perms *perms = (struct deleg_perms *)data;
5056         zfs_type_t zfs_type = zfs_get_type(zhp);
5057
5058         if (zfs_type != ZFS_TYPE_FILESYSTEM && zfs_type != ZFS_TYPE_VOLUME)
5059                 return (0);
5060
5061         return (zfs_set_fsacl(zhp, perms->un, perms->nvl));
5062 }
5063
5064 static int
5065 zfs_do_allow_unallow_impl(int argc, char **argv, boolean_t un)
5066 {
5067         zfs_handle_t *zhp;
5068         nvlist_t *perm_nvl = NULL;
5069         nvlist_t *update_perm_nvl = NULL;
5070         int error = 1;
5071         int c;
5072         struct allow_opts opts = { 0 };
5073
5074         const char *optstr = un ? "ldugecsrh" : "ldugecsh";
5075
5076         /* check opts */
5077         while ((c = getopt(argc, argv, optstr)) != -1) {
5078                 switch (c) {
5079                 case 'l':
5080                         opts.local = B_TRUE;
5081                         break;
5082                 case 'd':
5083                         opts.descend = B_TRUE;
5084                         break;
5085                 case 'u':
5086                         opts.user = B_TRUE;
5087                         break;
5088                 case 'g':
5089                         opts.group = B_TRUE;
5090                         break;
5091                 case 'e':
5092                         opts.everyone = B_TRUE;
5093                         break;
5094                 case 's':
5095                         opts.set = B_TRUE;
5096                         break;
5097                 case 'c':
5098                         opts.create = B_TRUE;
5099                         break;
5100                 case 'r':
5101                         opts.recursive = B_TRUE;
5102                         break;
5103                 case ':':
5104                         (void) fprintf(stderr, gettext("missing argument for "
5105                             "'%c' option\n"), optopt);
5106                         usage(B_FALSE);
5107                         break;
5108                 case 'h':
5109                         opts.prt_usage = B_TRUE;
5110                         break;
5111                 case '?':
5112                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5113                             optopt);
5114                         usage(B_FALSE);
5115                 }
5116         }
5117
5118         argc -= optind;
5119         argv += optind;
5120
5121         /* check arguments */
5122         parse_allow_args(argc, argv, un, &opts);
5123
5124         /* try to open the dataset */
5125         if ((zhp = zfs_open(g_zfs, opts.dataset, ZFS_TYPE_FILESYSTEM |
5126             ZFS_TYPE_VOLUME)) == NULL) {
5127                 (void) fprintf(stderr, "Failed to open dataset: %s\n",
5128                     opts.dataset);
5129                 return (-1);
5130         }
5131
5132         if (zfs_get_fsacl(zhp, &perm_nvl) != 0)
5133                 goto cleanup2;
5134
5135         fs_perm_set_init(&fs_perm_set);
5136         if (parse_fs_perm_set(&fs_perm_set, perm_nvl) != 0) {
5137                 (void) fprintf(stderr, "Failed to parse fsacl permissions\n");
5138                 goto cleanup1;
5139         }
5140
5141         if (opts.prt_perms)
5142                 print_fs_perms(&fs_perm_set);
5143         else {
5144                 (void) construct_fsacl_list(un, &opts, &update_perm_nvl);
5145                 if (zfs_set_fsacl(zhp, un, update_perm_nvl) != 0)
5146                         goto cleanup0;
5147
5148                 if (un && opts.recursive) {
5149                         struct deleg_perms data = { un, update_perm_nvl };
5150                         if (zfs_iter_filesystems(zhp, set_deleg_perms,
5151                             &data) != 0)
5152                                 goto cleanup0;
5153                 }
5154         }
5155
5156         error = 0;
5157
5158 cleanup0:
5159         nvlist_free(perm_nvl);
5160         if (update_perm_nvl != NULL)
5161                 nvlist_free(update_perm_nvl);
5162 cleanup1:
5163         fs_perm_set_fini(&fs_perm_set);
5164 cleanup2:
5165         zfs_close(zhp);
5166
5167         return (error);
5168 }
5169
5170 static int
5171 zfs_do_allow(int argc, char **argv)
5172 {
5173         return (zfs_do_allow_unallow_impl(argc, argv, B_FALSE));
5174 }
5175
5176 static int
5177 zfs_do_unallow(int argc, char **argv)
5178 {
5179         return (zfs_do_allow_unallow_impl(argc, argv, B_TRUE));
5180 }
5181
5182 static int
5183 zfs_do_hold_rele_impl(int argc, char **argv, boolean_t holding)
5184 {
5185         int errors = 0;
5186         int i;
5187         const char *tag;
5188         boolean_t recursive = B_FALSE;
5189         const char *opts = holding ? "rt" : "r";
5190         int c;
5191
5192         /* check options */
5193         while ((c = getopt(argc, argv, opts)) != -1) {
5194                 switch (c) {
5195                 case 'r':
5196                         recursive = B_TRUE;
5197                         break;
5198                 case '?':
5199                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5200                             optopt);
5201                         usage(B_FALSE);
5202                 }
5203         }
5204
5205         argc -= optind;
5206         argv += optind;
5207
5208         /* check number of arguments */
5209         if (argc < 2)
5210                 usage(B_FALSE);
5211
5212         tag = argv[0];
5213         --argc;
5214         ++argv;
5215
5216         if (holding && tag[0] == '.') {
5217                 /* tags starting with '.' are reserved for libzfs */
5218                 (void) fprintf(stderr, gettext("tag may not start with '.'\n"));
5219                 usage(B_FALSE);
5220         }
5221
5222         for (i = 0; i < argc; ++i) {
5223                 zfs_handle_t *zhp;
5224                 char parent[ZFS_MAXNAMELEN];
5225                 const char *delim;
5226                 char *path = argv[i];
5227
5228                 delim = strchr(path, '@');
5229                 if (delim == NULL) {
5230                         (void) fprintf(stderr,
5231                             gettext("'%s' is not a snapshot\n"), path);
5232                         ++errors;
5233                         continue;
5234                 }
5235                 (void) strncpy(parent, path, delim - path);
5236                 parent[delim - path] = '\0';
5237
5238                 zhp = zfs_open(g_zfs, parent,
5239                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
5240                 if (zhp == NULL) {
5241                         ++errors;
5242                         continue;
5243                 }
5244                 if (holding) {
5245                         if (zfs_hold(zhp, delim+1, tag, recursive, -1) != 0)
5246                                 ++errors;
5247                 } else {
5248                         if (zfs_release(zhp, delim+1, tag, recursive) != 0)
5249                                 ++errors;
5250                 }
5251                 zfs_close(zhp);
5252         }
5253
5254         return (errors != 0);
5255 }
5256
5257 /*
5258  * zfs hold [-r] [-t] <tag> <snap> ...
5259  *
5260  *      -r      Recursively hold
5261  *
5262  * Apply a user-hold with the given tag to the list of snapshots.
5263  */
5264 static int
5265 zfs_do_hold(int argc, char **argv)
5266 {
5267         return (zfs_do_hold_rele_impl(argc, argv, B_TRUE));
5268 }
5269
5270 /*
5271  * zfs release [-r] <tag> <snap> ...
5272  *
5273  *      -r      Recursively release
5274  *
5275  * Release a user-hold with the given tag from the list of snapshots.
5276  */
5277 static int
5278 zfs_do_release(int argc, char **argv)
5279 {
5280         return (zfs_do_hold_rele_impl(argc, argv, B_FALSE));
5281 }
5282
5283 typedef struct holds_cbdata {
5284         boolean_t       cb_recursive;
5285         const char      *cb_snapname;
5286         nvlist_t        **cb_nvlp;
5287         size_t          cb_max_namelen;
5288         size_t          cb_max_taglen;
5289 } holds_cbdata_t;
5290
5291 #define STRFTIME_FMT_STR "%a %b %e %k:%M %Y"
5292 #define DATETIME_BUF_LEN (32)
5293 /*
5294  *
5295  */
5296 static void
5297 print_holds(boolean_t scripted, size_t nwidth, size_t tagwidth, nvlist_t *nvl)
5298 {
5299         int i;
5300         nvpair_t *nvp = NULL;
5301         char *hdr_cols[] = { "NAME", "TAG", "TIMESTAMP" };
5302         const char *col;
5303
5304         if (!scripted) {
5305                 for (i = 0; i < 3; i++) {
5306                         col = gettext(hdr_cols[i]);
5307                         if (i < 2)
5308                                 (void) printf("%-*s  ", i ? tagwidth : nwidth,
5309                                     col);
5310                         else
5311                                 (void) printf("%s\n", col);
5312                 }
5313         }
5314
5315         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
5316                 char *zname = nvpair_name(nvp);
5317                 nvlist_t *nvl2;
5318                 nvpair_t *nvp2 = NULL;
5319                 (void) nvpair_value_nvlist(nvp, &nvl2);
5320                 while ((nvp2 = nvlist_next_nvpair(nvl2, nvp2)) != NULL) {
5321                         char tsbuf[DATETIME_BUF_LEN];
5322                         char *tagname = nvpair_name(nvp2);
5323                         uint64_t val = 0;
5324                         time_t time;
5325                         struct tm t;
5326                         char sep = scripted ? '\t' : ' ';
5327                         size_t sepnum = scripted ? 1 : 2;
5328
5329                         (void) nvpair_value_uint64(nvp2, &val);
5330                         time = (time_t)val;
5331                         (void) localtime_r(&time, &t);
5332                         (void) strftime(tsbuf, DATETIME_BUF_LEN,
5333                             gettext(STRFTIME_FMT_STR), &t);
5334
5335                         (void) printf("%-*s%*c%-*s%*c%s\n", nwidth, zname,
5336                             sepnum, sep, tagwidth, tagname, sepnum, sep, tsbuf);
5337                 }
5338         }
5339 }
5340
5341 /*
5342  * Generic callback function to list a dataset or snapshot.
5343  */
5344 static int
5345 holds_callback(zfs_handle_t *zhp, void *data)
5346 {
5347         holds_cbdata_t *cbp = data;
5348         nvlist_t *top_nvl = *cbp->cb_nvlp;
5349         nvlist_t *nvl = NULL;
5350         nvpair_t *nvp = NULL;
5351         const char *zname = zfs_get_name(zhp);
5352         size_t znamelen = strnlen(zname, ZFS_MAXNAMELEN);
5353
5354         if (cbp->cb_recursive) {
5355                 const char *snapname;
5356                 char *delim  = strchr(zname, '@');
5357                 if (delim == NULL)
5358                         return (0);
5359
5360                 snapname = delim + 1;
5361                 if (strcmp(cbp->cb_snapname, snapname))
5362                         return (0);
5363         }
5364
5365         if (zfs_get_holds(zhp, &nvl) != 0)
5366                 return (-1);
5367
5368         if (znamelen > cbp->cb_max_namelen)
5369                 cbp->cb_max_namelen  = znamelen;
5370
5371         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
5372                 const char *tag = nvpair_name(nvp);
5373                 size_t taglen = strnlen(tag, MAXNAMELEN);
5374                 if (taglen > cbp->cb_max_taglen)
5375                         cbp->cb_max_taglen  = taglen;
5376         }
5377
5378         return (nvlist_add_nvlist(top_nvl, zname, nvl));
5379 }
5380
5381 /*
5382  * zfs holds [-r] <snap> ...
5383  *
5384  *      -r      Recursively hold
5385  */
5386 static int
5387 zfs_do_holds(int argc, char **argv)
5388 {
5389         int errors = 0;
5390         int c;
5391         int i;
5392         boolean_t scripted = B_FALSE;
5393         boolean_t recursive = B_FALSE;
5394         const char *opts = "rH";
5395         nvlist_t *nvl;
5396
5397         int types = ZFS_TYPE_SNAPSHOT;
5398         holds_cbdata_t cb = { 0 };
5399
5400         int limit = 0;
5401         int ret = 0;
5402         int flags = 0;
5403
5404         /* check options */
5405         while ((c = getopt(argc, argv, opts)) != -1) {
5406                 switch (c) {
5407                 case 'r':
5408                         recursive = B_TRUE;
5409                         break;
5410                 case 'H':
5411                         scripted = B_TRUE;
5412                         break;
5413                 case '?':
5414                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5415                             optopt);
5416                         usage(B_FALSE);
5417                 }
5418         }
5419
5420         if (recursive) {
5421                 types |= ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME;
5422                 flags |= ZFS_ITER_RECURSE;
5423         }
5424
5425         argc -= optind;
5426         argv += optind;
5427
5428         /* check number of arguments */
5429         if (argc < 1)
5430                 usage(B_FALSE);
5431
5432         if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0)
5433                 nomem();
5434
5435         for (i = 0; i < argc; ++i) {
5436                 char *snapshot = argv[i];
5437                 const char *delim;
5438                 const char *snapname;
5439
5440                 delim = strchr(snapshot, '@');
5441                 if (delim == NULL) {
5442                         (void) fprintf(stderr,
5443                             gettext("'%s' is not a snapshot\n"), snapshot);
5444                         ++errors;
5445                         continue;
5446                 }
5447                 snapname = delim + 1;
5448                 if (recursive)
5449                         snapshot[delim - snapshot] = '\0';
5450
5451                 cb.cb_recursive = recursive;
5452                 cb.cb_snapname = snapname;
5453                 cb.cb_nvlp = &nvl;
5454
5455                 /*
5456                  *  1. collect holds data, set format options
5457                  */
5458                 ret = zfs_for_each(argc, argv, flags, types, NULL, NULL, limit,
5459                     holds_callback, &cb);
5460                 if (ret != 0)
5461                         ++errors;
5462         }
5463
5464         /*
5465          *  2. print holds data
5466          */
5467         print_holds(scripted, cb.cb_max_namelen, cb.cb_max_taglen, nvl);
5468
5469         if (nvlist_empty(nvl))
5470                 (void) printf(gettext("no datasets available\n"));
5471
5472         nvlist_free(nvl);
5473
5474         return (0 != errors);
5475 }
5476
5477 #define CHECK_SPINNER 30
5478 #define SPINNER_TIME 3          /* seconds */
5479 #define MOUNT_TIME 5            /* seconds */
5480
5481 static int
5482 get_one_dataset(zfs_handle_t *zhp, void *data)
5483 {
5484         static char *spin[] = { "-", "\\", "|", "/" };
5485         static int spinval = 0;
5486         static int spincheck = 0;
5487         static time_t last_spin_time = (time_t)0;
5488         get_all_cb_t *cbp = data;
5489         zfs_type_t type = zfs_get_type(zhp);
5490
5491         if (cbp->cb_verbose) {
5492                 if (--spincheck < 0) {
5493                         time_t now = time(NULL);
5494                         if (last_spin_time + SPINNER_TIME < now) {
5495                                 update_progress(spin[spinval++ % 4]);
5496                                 last_spin_time = now;
5497                         }
5498                         spincheck = CHECK_SPINNER;
5499                 }
5500         }
5501
5502         /*
5503          * Interate over any nested datasets.
5504          */
5505         if (zfs_iter_filesystems(zhp, get_one_dataset, data) != 0) {
5506                 zfs_close(zhp);
5507                 return (1);
5508         }
5509
5510         /*
5511          * Skip any datasets whose type does not match.
5512          */
5513         if ((type & ZFS_TYPE_FILESYSTEM) == 0) {
5514                 zfs_close(zhp);
5515                 return (0);
5516         }
5517         libzfs_add_handle(cbp, zhp);
5518         assert(cbp->cb_used <= cbp->cb_alloc);
5519
5520         return (0);
5521 }
5522
5523 static void
5524 get_all_datasets(zfs_handle_t ***dslist, size_t *count, boolean_t verbose)
5525 {
5526         get_all_cb_t cb = { 0 };
5527         cb.cb_verbose = verbose;
5528         cb.cb_getone = get_one_dataset;
5529
5530         if (verbose)
5531                 set_progress_header(gettext("Reading ZFS config"));
5532         (void) zfs_iter_root(g_zfs, get_one_dataset, &cb);
5533
5534         *dslist = cb.cb_handles;
5535         *count = cb.cb_used;
5536
5537         if (verbose)
5538                 finish_progress(gettext("done."));
5539 }
5540
5541 /*
5542  * Generic callback for sharing or mounting filesystems.  Because the code is so
5543  * similar, we have a common function with an extra parameter to determine which
5544  * mode we are using.
5545  */
5546 #define OP_SHARE        0x1
5547 #define OP_MOUNT        0x2
5548
5549 /*
5550  * Share or mount a dataset.
5551  */
5552 static int
5553 share_mount_one(zfs_handle_t *zhp, int op, int flags, char *protocol,
5554     boolean_t explicit, const char *options)
5555 {
5556         char mountpoint[ZFS_MAXPROPLEN];
5557         char shareopts[ZFS_MAXPROPLEN];
5558         char smbshareopts[ZFS_MAXPROPLEN];
5559         const char *cmdname = op == OP_SHARE ? "share" : "mount";
5560         struct mnttab mnt;
5561         uint64_t zoned, canmount;
5562         boolean_t shared_nfs, shared_smb;
5563
5564         assert(zfs_get_type(zhp) & ZFS_TYPE_FILESYSTEM);
5565
5566         /*
5567          * Check to make sure we can mount/share this dataset.  If we
5568          * are in the global zone and the filesystem is exported to a
5569          * local zone, or if we are in a local zone and the
5570          * filesystem is not exported, then it is an error.
5571          */
5572         zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED);
5573
5574         if (zoned && getzoneid() == GLOBAL_ZONEID) {
5575                 if (!explicit)
5576                         return (0);
5577
5578                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5579                     "dataset is exported to a local zone\n"), cmdname,
5580                     zfs_get_name(zhp));
5581                 return (1);
5582
5583         } else if (!zoned && getzoneid() != GLOBAL_ZONEID) {
5584                 if (!explicit)
5585                         return (0);
5586
5587                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5588                     "permission denied\n"), cmdname,
5589                     zfs_get_name(zhp));
5590                 return (1);
5591         }
5592
5593         /*
5594          * Ignore any filesystems which don't apply to us. This
5595          * includes those with a legacy mountpoint, or those with
5596          * legacy share options.
5597          */
5598         verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
5599             sizeof (mountpoint), NULL, NULL, 0, B_FALSE) == 0);
5600         verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, shareopts,
5601             sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0);
5602         verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshareopts,
5603             sizeof (smbshareopts), NULL, NULL, 0, B_FALSE) == 0);
5604
5605         if (op == OP_SHARE && strcmp(shareopts, "off") == 0 &&
5606             strcmp(smbshareopts, "off") == 0) {
5607                 if (!explicit)
5608                         return (0);
5609
5610                 (void) fprintf(stderr, gettext("cannot share '%s': "
5611                     "legacy share\n"), zfs_get_name(zhp));
5612                 (void) fprintf(stderr, gettext("to "
5613                     "share this filesystem set "
5614                     "sharenfs property on\n"));
5615                 return (1);
5616         }
5617
5618         /*
5619          * We cannot share or mount legacy filesystems. If the
5620          * shareopts is non-legacy but the mountpoint is legacy, we
5621          * treat it as a legacy share.
5622          */
5623         if (strcmp(mountpoint, "legacy") == 0) {
5624                 if (!explicit)
5625                         return (0);
5626
5627                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5628                     "legacy mountpoint\n"), cmdname, zfs_get_name(zhp));
5629                 (void) fprintf(stderr, gettext("use %s(8) to "
5630                     "%s this filesystem\n"), cmdname, cmdname);
5631                 return (1);
5632         }
5633
5634         if (strcmp(mountpoint, "none") == 0) {
5635                 if (!explicit)
5636                         return (0);
5637
5638                 (void) fprintf(stderr, gettext("cannot %s '%s': no "
5639                     "mountpoint set\n"), cmdname, zfs_get_name(zhp));
5640                 return (1);
5641         }
5642
5643         /*
5644          * canmount     explicit        outcome
5645          * on           no              pass through
5646          * on           yes             pass through
5647          * off          no              return 0
5648          * off          yes             display error, return 1
5649          * noauto       no              return 0
5650          * noauto       yes             pass through
5651          */
5652         canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT);
5653         if (canmount == ZFS_CANMOUNT_OFF) {
5654                 if (!explicit)
5655                         return (0);
5656
5657                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5658                     "'canmount' property is set to 'off'\n"), cmdname,
5659                     zfs_get_name(zhp));
5660                 return (1);
5661         } else if (canmount == ZFS_CANMOUNT_NOAUTO && !explicit) {
5662                 return (0);
5663         }
5664
5665         /*
5666          * At this point, we have verified that the mountpoint and/or
5667          * shareopts are appropriate for auto management. If the
5668          * filesystem is already mounted or shared, return (failing
5669          * for explicit requests); otherwise mount or share the
5670          * filesystem.
5671          */
5672         switch (op) {
5673         case OP_SHARE:
5674
5675                 shared_nfs = zfs_is_shared_nfs(zhp, NULL);
5676                 shared_smb = zfs_is_shared_smb(zhp, NULL);
5677
5678                 if (shared_nfs && shared_smb ||
5679                     (shared_nfs && strcmp(shareopts, "on") == 0 &&
5680                     strcmp(smbshareopts, "off") == 0) ||
5681                     (shared_smb && strcmp(smbshareopts, "on") == 0 &&
5682                     strcmp(shareopts, "off") == 0)) {
5683                         if (!explicit)
5684                                 return (0);
5685
5686                         (void) fprintf(stderr, gettext("cannot share "
5687                             "'%s': filesystem already shared\n"),
5688                             zfs_get_name(zhp));
5689                         return (1);
5690                 }
5691
5692                 if (!zfs_is_mounted(zhp, NULL) &&
5693                     zfs_mount(zhp, NULL, 0) != 0)
5694                         return (1);
5695
5696                 if (protocol == NULL) {
5697                         if (zfs_shareall(zhp) != 0)
5698                                 return (1);
5699                 } else if (strcmp(protocol, "nfs") == 0) {
5700                         if (zfs_share_nfs(zhp))
5701                                 return (1);
5702                 } else if (strcmp(protocol, "smb") == 0) {
5703                         if (zfs_share_smb(zhp))
5704                                 return (1);
5705                 } else {
5706                         (void) fprintf(stderr, gettext("cannot share "
5707                             "'%s': invalid share type '%s' "
5708                             "specified\n"),
5709                             zfs_get_name(zhp), protocol);
5710                         return (1);
5711                 }
5712
5713                 break;
5714
5715         case OP_MOUNT:
5716                 if (options == NULL)
5717                         mnt.mnt_mntopts = "";
5718                 else
5719                         mnt.mnt_mntopts = (char *)options;
5720
5721                 if (!hasmntopt(&mnt, MNTOPT_REMOUNT) &&
5722                     zfs_is_mounted(zhp, NULL)) {
5723                         if (!explicit)
5724                                 return (0);
5725
5726                         (void) fprintf(stderr, gettext("cannot mount "
5727                             "'%s': filesystem already mounted\n"),
5728                             zfs_get_name(zhp));
5729                         return (1);
5730                 }
5731
5732                 if (zfs_mount(zhp, options, flags) != 0)
5733                         return (1);
5734                 break;
5735         }
5736
5737         return (0);
5738 }
5739
5740 /*
5741  * Reports progress in the form "(current/total)".  Not thread-safe.
5742  */
5743 static void
5744 report_mount_progress(int current, int total)
5745 {
5746         static time_t last_progress_time = 0;
5747         time_t now = time(NULL);
5748         char info[32];
5749
5750         /* report 1..n instead of 0..n-1 */
5751         ++current;
5752
5753         /* display header if we're here for the first time */
5754         if (current == 1) {
5755                 set_progress_header(gettext("Mounting ZFS filesystems"));
5756         } else if (current != total && last_progress_time + MOUNT_TIME >= now) {
5757                 /* too soon to report again */
5758                 return;
5759         }
5760
5761         last_progress_time = now;
5762
5763         (void) sprintf(info, "(%d/%d)", current, total);
5764
5765         if (current == total)
5766                 finish_progress(info);
5767         else
5768                 update_progress(info);
5769 }
5770
5771 static void
5772 append_options(char *mntopts, char *newopts)
5773 {
5774         int len = strlen(mntopts);
5775
5776         /* original length plus new string to append plus 1 for the comma */
5777         if (len + 1 + strlen(newopts) >= MNT_LINE_MAX) {
5778                 (void) fprintf(stderr, gettext("the opts argument for "
5779                     "'%c' option is too long (more than %d chars)\n"),
5780                     "-o", MNT_LINE_MAX);
5781                 usage(B_FALSE);
5782         }
5783
5784         if (*mntopts)
5785                 mntopts[len++] = ',';
5786
5787         (void) strcpy(&mntopts[len], newopts);
5788 }
5789
5790 static int
5791 share_mount(int op, int argc, char **argv)
5792 {
5793         int do_all = 0;
5794         boolean_t verbose = B_FALSE;
5795         int c, ret = 0;
5796         char *options = NULL;
5797         int flags = 0;
5798
5799         /* check options */
5800         while ((c = getopt(argc, argv, op == OP_MOUNT ? ":avo:O" : "a"))
5801             != -1) {
5802                 switch (c) {
5803                 case 'a':
5804                         do_all = 1;
5805                         break;
5806                 case 'v':
5807                         verbose = B_TRUE;
5808                         break;
5809                 case 'o':
5810                         if (*optarg == '\0') {
5811                                 (void) fprintf(stderr, gettext("empty mount "
5812                                     "options (-o) specified\n"));
5813                                 usage(B_FALSE);
5814                         }
5815
5816                         if (options == NULL)
5817                                 options = safe_malloc(MNT_LINE_MAX + 1);
5818
5819                         /* option validation is done later */
5820                         append_options(options, optarg);
5821                         break;
5822
5823                 case 'O':
5824                         warnx("no overlay mounts support on FreeBSD, ignoring");
5825                         break;
5826                 case ':':
5827                         (void) fprintf(stderr, gettext("missing argument for "
5828                             "'%c' option\n"), optopt);
5829                         usage(B_FALSE);
5830                         break;
5831                 case '?':
5832                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5833                             optopt);
5834                         usage(B_FALSE);
5835                 }
5836         }
5837
5838         argc -= optind;
5839         argv += optind;
5840
5841         /* check number of arguments */
5842         if (do_all) {
5843                 zfs_handle_t **dslist = NULL;
5844                 size_t i, count = 0;
5845                 char *protocol = NULL;
5846
5847                 if (op == OP_SHARE && argc > 0) {
5848                         if (strcmp(argv[0], "nfs") != 0 &&
5849                             strcmp(argv[0], "smb") != 0) {
5850                                 (void) fprintf(stderr, gettext("share type "
5851                                     "must be 'nfs' or 'smb'\n"));
5852                                 usage(B_FALSE);
5853                         }
5854                         protocol = argv[0];
5855                         argc--;
5856                         argv++;
5857                 }
5858
5859                 if (argc != 0) {
5860                         (void) fprintf(stderr, gettext("too many arguments\n"));
5861                         usage(B_FALSE);
5862                 }
5863
5864                 start_progress_timer();
5865                 get_all_datasets(&dslist, &count, verbose);
5866
5867                 if (count == 0)
5868                         return (0);
5869
5870                 qsort(dslist, count, sizeof (void *), libzfs_dataset_cmp);
5871
5872                 for (i = 0; i < count; i++) {
5873                         if (verbose)
5874                                 report_mount_progress(i, count);
5875
5876                         if (share_mount_one(dslist[i], op, flags, protocol,
5877                             B_FALSE, options) != 0)
5878                                 ret = 1;
5879                         zfs_close(dslist[i]);
5880                 }
5881
5882                 free(dslist);
5883         } else if (argc == 0) {
5884                 struct mnttab entry;
5885
5886                 if ((op == OP_SHARE) || (options != NULL)) {
5887                         (void) fprintf(stderr, gettext("missing filesystem "
5888                             "argument (specify -a for all)\n"));
5889                         usage(B_FALSE);
5890                 }
5891
5892                 /*
5893                  * When mount is given no arguments, go through /etc/mnttab and
5894                  * display any active ZFS mounts.  We hide any snapshots, since
5895                  * they are controlled automatically.
5896                  */
5897                 rewind(mnttab_file);
5898                 while (getmntent(mnttab_file, &entry) == 0) {
5899                         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0 ||
5900                             strchr(entry.mnt_special, '@') != NULL)
5901                                 continue;
5902
5903                         (void) printf("%-30s  %s\n", entry.mnt_special,
5904                             entry.mnt_mountp);
5905                 }
5906
5907         } else {
5908                 zfs_handle_t *zhp;
5909
5910                 if (argc > 1) {
5911                         (void) fprintf(stderr,
5912                             gettext("too many arguments\n"));
5913                         usage(B_FALSE);
5914                 }
5915
5916                 if ((zhp = zfs_open(g_zfs, argv[0],
5917                     ZFS_TYPE_FILESYSTEM)) == NULL) {
5918                         ret = 1;
5919                 } else {
5920                         ret = share_mount_one(zhp, op, flags, NULL, B_TRUE,
5921                             options);
5922                         zfs_close(zhp);
5923                 }
5924         }
5925
5926         return (ret);
5927 }
5928
5929 /*
5930  * zfs mount -a [nfs]
5931  * zfs mount filesystem
5932  *
5933  * Mount all filesystems, or mount the given filesystem.
5934  */
5935 static int
5936 zfs_do_mount(int argc, char **argv)
5937 {
5938         return (share_mount(OP_MOUNT, argc, argv));
5939 }
5940
5941 /*
5942  * zfs share -a [nfs | smb]
5943  * zfs share filesystem
5944  *
5945  * Share all filesystems, or share the given filesystem.
5946  */
5947 static int
5948 zfs_do_share(int argc, char **argv)
5949 {
5950         return (share_mount(OP_SHARE, argc, argv));
5951 }
5952
5953 typedef struct unshare_unmount_node {
5954         zfs_handle_t    *un_zhp;
5955         char            *un_mountp;
5956         uu_avl_node_t   un_avlnode;
5957 } unshare_unmount_node_t;
5958
5959 /* ARGSUSED */
5960 static int
5961 unshare_unmount_compare(const void *larg, const void *rarg, void *unused)
5962 {
5963         const unshare_unmount_node_t *l = larg;
5964         const unshare_unmount_node_t *r = rarg;
5965
5966         return (strcmp(l->un_mountp, r->un_mountp));
5967 }
5968
5969 /*
5970  * Convenience routine used by zfs_do_umount() and manual_unmount().  Given an
5971  * absolute path, find the entry /etc/mnttab, verify that its a ZFS filesystem,
5972  * and unmount it appropriately.
5973  */
5974 static int
5975 unshare_unmount_path(int op, char *path, int flags, boolean_t is_manual)
5976 {
5977         zfs_handle_t *zhp;
5978         int ret = 0;
5979         struct stat64 statbuf;
5980         struct extmnttab entry;
5981         const char *cmdname = (op == OP_SHARE) ? "unshare" : "unmount";
5982         ino_t path_inode;
5983
5984         /*
5985          * Search for the path in /etc/mnttab.  Rather than looking for the
5986          * specific path, which can be fooled by non-standard paths (i.e. ".."
5987          * or "//"), we stat() the path and search for the corresponding
5988          * (major,minor) device pair.
5989          */
5990         if (stat64(path, &statbuf) != 0) {
5991                 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
5992                     cmdname, path, strerror(errno));
5993                 return (1);
5994         }
5995         path_inode = statbuf.st_ino;
5996
5997         /*
5998          * Search for the given (major,minor) pair in the mount table.
5999          */
6000 #ifdef sun
6001         rewind(mnttab_file);
6002         while ((ret = getextmntent(mnttab_file, &entry, 0)) == 0) {
6003                 if (entry.mnt_major == major(statbuf.st_dev) &&
6004                     entry.mnt_minor == minor(statbuf.st_dev))
6005                         break;
6006         }
6007 #else
6008         {
6009                 struct statfs sfs;
6010
6011                 if (statfs(path, &sfs) != 0) {
6012                         (void) fprintf(stderr, "%s: %s\n", path,
6013                             strerror(errno));
6014                         ret = -1;
6015                 }
6016                 statfs2mnttab(&sfs, &entry);
6017         }
6018 #endif
6019         if (ret != 0) {
6020                 if (op == OP_SHARE) {
6021                         (void) fprintf(stderr, gettext("cannot %s '%s': not "
6022                             "currently mounted\n"), cmdname, path);
6023                         return (1);
6024                 }
6025                 (void) fprintf(stderr, gettext("warning: %s not in mnttab\n"),
6026                     path);
6027                 if ((ret = umount2(path, flags)) != 0)
6028                         (void) fprintf(stderr, gettext("%s: %s\n"), path,
6029                             strerror(errno));
6030                 return (ret != 0);
6031         }
6032
6033         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) {
6034                 (void) fprintf(stderr, gettext("cannot %s '%s': not a ZFS "
6035                     "filesystem\n"), cmdname, path);
6036                 return (1);
6037         }
6038
6039         if ((zhp = zfs_open(g_zfs, entry.mnt_special,
6040             ZFS_TYPE_FILESYSTEM)) == NULL)
6041                 return (1);
6042
6043         ret = 1;
6044         if (stat64(entry.mnt_mountp, &statbuf) != 0) {
6045                 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
6046                     cmdname, path, strerror(errno));
6047                 goto out;
6048         } else if (statbuf.st_ino != path_inode) {
6049                 (void) fprintf(stderr, gettext("cannot "
6050                     "%s '%s': not a mountpoint\n"), cmdname, path);
6051                 goto out;
6052         }
6053
6054         if (op == OP_SHARE) {
6055                 char nfs_mnt_prop[ZFS_MAXPROPLEN];
6056                 char smbshare_prop[ZFS_MAXPROPLEN];
6057
6058                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, nfs_mnt_prop,
6059                     sizeof (nfs_mnt_prop), NULL, NULL, 0, B_FALSE) == 0);
6060                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshare_prop,
6061                     sizeof (smbshare_prop), NULL, NULL, 0, B_FALSE) == 0);
6062
6063                 if (strcmp(nfs_mnt_prop, "off") == 0 &&
6064                     strcmp(smbshare_prop, "off") == 0) {
6065                         (void) fprintf(stderr, gettext("cannot unshare "
6066                             "'%s': legacy share\n"), path);
6067 #ifdef illumos
6068                         (void) fprintf(stderr, gettext("use "
6069                             "unshare(1M) to unshare this filesystem\n"));
6070 #endif
6071                 } else if (!zfs_is_shared(zhp)) {
6072                         (void) fprintf(stderr, gettext("cannot unshare '%s': "
6073                             "not currently shared\n"), path);
6074                 } else {
6075                         ret = zfs_unshareall_bypath(zhp, path);
6076                 }
6077         } else {
6078                 char mtpt_prop[ZFS_MAXPROPLEN];
6079
6080                 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mtpt_prop,
6081                     sizeof (mtpt_prop), NULL, NULL, 0, B_FALSE) == 0);
6082
6083                 if (is_manual) {
6084                         ret = zfs_unmount(zhp, NULL, flags);
6085                 } else if (strcmp(mtpt_prop, "legacy") == 0) {
6086                         (void) fprintf(stderr, gettext("cannot unmount "
6087                             "'%s': legacy mountpoint\n"),
6088                             zfs_get_name(zhp));
6089                         (void) fprintf(stderr, gettext("use umount(8) "
6090                             "to unmount this filesystem\n"));
6091                 } else {
6092                         ret = zfs_unmountall(zhp, flags);
6093                 }
6094         }
6095
6096 out:
6097         zfs_close(zhp);
6098
6099         return (ret != 0);
6100 }
6101
6102 /*
6103  * Generic callback for unsharing or unmounting a filesystem.
6104  */
6105 static int
6106 unshare_unmount(int op, int argc, char **argv)
6107 {
6108         int do_all = 0;
6109         int flags = 0;
6110         int ret = 0;
6111         int c;
6112         zfs_handle_t *zhp;
6113         char nfs_mnt_prop[ZFS_MAXPROPLEN];
6114         char sharesmb[ZFS_MAXPROPLEN];
6115
6116         /* check options */
6117         while ((c = getopt(argc, argv, op == OP_SHARE ? "a" : "af")) != -1) {
6118                 switch (c) {
6119                 case 'a':
6120                         do_all = 1;
6121                         break;
6122                 case 'f':
6123                         flags = MS_FORCE;
6124                         break;
6125                 case '?':
6126                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6127                             optopt);
6128                         usage(B_FALSE);
6129                 }
6130         }
6131
6132         argc -= optind;
6133         argv += optind;
6134
6135         if (do_all) {
6136                 /*
6137                  * We could make use of zfs_for_each() to walk all datasets in
6138                  * the system, but this would be very inefficient, especially
6139                  * since we would have to linearly search /etc/mnttab for each
6140                  * one.  Instead, do one pass through /etc/mnttab looking for
6141                  * zfs entries and call zfs_unmount() for each one.
6142                  *
6143                  * Things get a little tricky if the administrator has created
6144                  * mountpoints beneath other ZFS filesystems.  In this case, we
6145                  * have to unmount the deepest filesystems first.  To accomplish
6146                  * this, we place all the mountpoints in an AVL tree sorted by
6147                  * the special type (dataset name), and walk the result in
6148                  * reverse to make sure to get any snapshots first.
6149                  */
6150                 struct mnttab entry;
6151                 uu_avl_pool_t *pool;
6152                 uu_avl_t *tree;
6153                 unshare_unmount_node_t *node;
6154                 uu_avl_index_t idx;
6155                 uu_avl_walk_t *walk;
6156
6157                 if (argc != 0) {
6158                         (void) fprintf(stderr, gettext("too many arguments\n"));
6159                         usage(B_FALSE);
6160                 }
6161
6162                 if (((pool = uu_avl_pool_create("unmount_pool",
6163                     sizeof (unshare_unmount_node_t),
6164                     offsetof(unshare_unmount_node_t, un_avlnode),
6165                     unshare_unmount_compare, UU_DEFAULT)) == NULL) ||
6166                     ((tree = uu_avl_create(pool, NULL, UU_DEFAULT)) == NULL))
6167                         nomem();
6168
6169                 rewind(mnttab_file);
6170                 while (getmntent(mnttab_file, &entry) == 0) {
6171
6172                         /* ignore non-ZFS entries */
6173                         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0)
6174                                 continue;
6175
6176                         /* ignore snapshots */
6177                         if (strchr(entry.mnt_special, '@') != NULL)
6178                                 continue;
6179
6180                         if ((zhp = zfs_open(g_zfs, entry.mnt_special,
6181                             ZFS_TYPE_FILESYSTEM)) == NULL) {
6182                                 ret = 1;
6183                                 continue;
6184                         }
6185
6186                         switch (op) {
6187                         case OP_SHARE:
6188                                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
6189                                     nfs_mnt_prop,
6190                                     sizeof (nfs_mnt_prop),
6191                                     NULL, NULL, 0, B_FALSE) == 0);
6192                                 if (strcmp(nfs_mnt_prop, "off") != 0)
6193                                         break;
6194                                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
6195                                     nfs_mnt_prop,
6196                                     sizeof (nfs_mnt_prop),
6197                                     NULL, NULL, 0, B_FALSE) == 0);
6198                                 if (strcmp(nfs_mnt_prop, "off") == 0)
6199                                         continue;
6200                                 break;
6201                         case OP_MOUNT:
6202                                 /* Ignore legacy mounts */
6203                                 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT,
6204                                     nfs_mnt_prop,
6205                                     sizeof (nfs_mnt_prop),
6206                                     NULL, NULL, 0, B_FALSE) == 0);
6207                                 if (strcmp(nfs_mnt_prop, "legacy") == 0)
6208                                         continue;
6209                                 /* Ignore canmount=noauto mounts */
6210                                 if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) ==
6211                                     ZFS_CANMOUNT_NOAUTO)
6212                                         continue;
6213                         default:
6214                                 break;
6215                         }
6216
6217                         node = safe_malloc(sizeof (unshare_unmount_node_t));
6218                         node->un_zhp = zhp;
6219                         node->un_mountp = safe_strdup(entry.mnt_mountp);
6220
6221                         uu_avl_node_init(node, &node->un_avlnode, pool);
6222
6223                         if (uu_avl_find(tree, node, NULL, &idx) == NULL) {
6224                                 uu_avl_insert(tree, node, idx);
6225                         } else {
6226                                 zfs_close(node->un_zhp);
6227                                 free(node->un_mountp);
6228                                 free(node);
6229                         }
6230                 }
6231
6232                 /*
6233                  * Walk the AVL tree in reverse, unmounting each filesystem and
6234                  * removing it from the AVL tree in the process.
6235                  */
6236                 if ((walk = uu_avl_walk_start(tree,
6237                     UU_WALK_REVERSE | UU_WALK_ROBUST)) == NULL)
6238                         nomem();
6239
6240                 while ((node = uu_avl_walk_next(walk)) != NULL) {
6241                         uu_avl_remove(tree, node);
6242
6243                         switch (op) {
6244                         case OP_SHARE:
6245                                 if (zfs_unshareall_bypath(node->un_zhp,
6246                                     node->un_mountp) != 0)
6247                                         ret = 1;
6248                                 break;
6249
6250                         case OP_MOUNT:
6251                                 if (zfs_unmount(node->un_zhp,
6252                                     node->un_mountp, flags) != 0)
6253                                         ret = 1;
6254                                 break;
6255                         }
6256
6257                         zfs_close(node->un_zhp);
6258                         free(node->un_mountp);
6259                         free(node);
6260                 }
6261
6262                 uu_avl_walk_end(walk);
6263                 uu_avl_destroy(tree);
6264                 uu_avl_pool_destroy(pool);
6265
6266         } else {
6267                 if (argc != 1) {
6268                         if (argc == 0)
6269                                 (void) fprintf(stderr,
6270                                     gettext("missing filesystem argument\n"));
6271                         else
6272                                 (void) fprintf(stderr,
6273                                     gettext("too many arguments\n"));
6274                         usage(B_FALSE);
6275                 }
6276
6277                 /*
6278                  * We have an argument, but it may be a full path or a ZFS
6279                  * filesystem.  Pass full paths off to unmount_path() (shared by
6280                  * manual_unmount), otherwise open the filesystem and pass to
6281                  * zfs_unmount().
6282                  */
6283                 if (argv[0][0] == '/')
6284                         return (unshare_unmount_path(op, argv[0],
6285                             flags, B_FALSE));
6286
6287                 if ((zhp = zfs_open(g_zfs, argv[0],
6288                     ZFS_TYPE_FILESYSTEM)) == NULL)
6289                         return (1);
6290
6291                 verify(zfs_prop_get(zhp, op == OP_SHARE ?
6292                     ZFS_PROP_SHARENFS : ZFS_PROP_MOUNTPOINT,
6293                     nfs_mnt_prop, sizeof (nfs_mnt_prop), NULL,
6294                     NULL, 0, B_FALSE) == 0);
6295
6296                 switch (op) {
6297                 case OP_SHARE:
6298                         verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
6299                             nfs_mnt_prop,
6300                             sizeof (nfs_mnt_prop),
6301                             NULL, NULL, 0, B_FALSE) == 0);
6302                         verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
6303                             sharesmb, sizeof (sharesmb), NULL, NULL,
6304                             0, B_FALSE) == 0);
6305
6306                         if (strcmp(nfs_mnt_prop, "off") == 0 &&
6307                             strcmp(sharesmb, "off") == 0) {
6308                                 (void) fprintf(stderr, gettext("cannot "
6309                                     "unshare '%s': legacy share\n"),
6310                                     zfs_get_name(zhp));
6311 #ifdef illumos
6312                                 (void) fprintf(stderr, gettext("use "
6313                                     "unshare(1M) to unshare this "
6314                                     "filesystem\n"));
6315 #endif
6316                                 ret = 1;
6317                         } else if (!zfs_is_shared(zhp)) {
6318                                 (void) fprintf(stderr, gettext("cannot "
6319                                     "unshare '%s': not currently "
6320                                     "shared\n"), zfs_get_name(zhp));
6321                                 ret = 1;
6322                         } else if (zfs_unshareall(zhp) != 0) {
6323                                 ret = 1;
6324                         }
6325                         break;
6326
6327                 case OP_MOUNT:
6328                         if (strcmp(nfs_mnt_prop, "legacy") == 0) {
6329                                 (void) fprintf(stderr, gettext("cannot "
6330                                     "unmount '%s': legacy "
6331                                     "mountpoint\n"), zfs_get_name(zhp));
6332                                 (void) fprintf(stderr, gettext("use "
6333                                     "umount(8) to unmount this "
6334                                     "filesystem\n"));
6335                                 ret = 1;
6336                         } else if (!zfs_is_mounted(zhp, NULL)) {
6337                                 (void) fprintf(stderr, gettext("cannot "
6338                                     "unmount '%s': not currently "
6339                                     "mounted\n"),
6340                                     zfs_get_name(zhp));
6341                                 ret = 1;
6342                         } else if (zfs_unmountall(zhp, flags) != 0) {
6343                                 ret = 1;
6344                         }
6345                         break;
6346                 }
6347
6348                 zfs_close(zhp);
6349         }
6350
6351         return (ret);
6352 }
6353
6354 /*
6355  * zfs unmount -a
6356  * zfs unmount filesystem
6357  *
6358  * Unmount all filesystems, or a specific ZFS filesystem.
6359  */
6360 static int
6361 zfs_do_unmount(int argc, char **argv)
6362 {
6363         return (unshare_unmount(OP_MOUNT, argc, argv));
6364 }
6365
6366 /*
6367  * zfs unshare -a
6368  * zfs unshare filesystem
6369  *
6370  * Unshare all filesystems, or a specific ZFS filesystem.
6371  */
6372 static int
6373 zfs_do_unshare(int argc, char **argv)
6374 {
6375         return (unshare_unmount(OP_SHARE, argc, argv));
6376 }
6377
6378 /*
6379  * Attach/detach the given dataset to/from the given jail
6380  */
6381 /* ARGSUSED */
6382 static int
6383 do_jail(int argc, char **argv, int attach)
6384 {
6385         zfs_handle_t *zhp;
6386         int jailid, ret;
6387
6388         /* check number of arguments */
6389         if (argc < 3) {
6390                 (void) fprintf(stderr, gettext("missing argument(s)\n"));
6391                 usage(B_FALSE);
6392         }
6393         if (argc > 3) {
6394                 (void) fprintf(stderr, gettext("too many arguments\n"));
6395                 usage(B_FALSE);
6396         }
6397
6398         jailid = jail_getid(argv[1]);
6399         if (jailid < 0) {
6400                 (void) fprintf(stderr, gettext("invalid jail id or name\n"));
6401                 usage(B_FALSE);
6402         }
6403
6404         zhp = zfs_open(g_zfs, argv[2], ZFS_TYPE_FILESYSTEM);
6405         if (zhp == NULL)
6406                 return (1);
6407
6408         ret = (zfs_jail(zhp, jailid, attach) != 0);
6409
6410         zfs_close(zhp);
6411         return (ret);
6412 }
6413
6414 /*
6415  * zfs jail jailid filesystem
6416  *
6417  * Attach the given dataset to the given jail
6418  */
6419 /* ARGSUSED */
6420 static int
6421 zfs_do_jail(int argc, char **argv)
6422 {
6423
6424         return (do_jail(argc, argv, 1));
6425 }
6426
6427 /*
6428  * zfs unjail jailid filesystem
6429  *
6430  * Detach the given dataset from the given jail
6431  */
6432 /* ARGSUSED */
6433 static int
6434 zfs_do_unjail(int argc, char **argv)
6435 {
6436
6437         return (do_jail(argc, argv, 0));
6438 }
6439
6440 /*
6441  * Called when invoked as /etc/fs/zfs/mount.  Do the mount if the mountpoint is
6442  * 'legacy'.  Otherwise, complain that use should be using 'zfs mount'.
6443  */
6444 static int
6445 manual_mount(int argc, char **argv)
6446 {
6447         zfs_handle_t *zhp;
6448         char mountpoint[ZFS_MAXPROPLEN];
6449         char mntopts[MNT_LINE_MAX] = { '\0' };
6450         int ret = 0;
6451         int c;
6452         int flags = 0;
6453         char *dataset, *path;
6454
6455         /* check options */
6456         while ((c = getopt(argc, argv, ":mo:O")) != -1) {
6457                 switch (c) {
6458                 case 'o':
6459                         (void) strlcpy(mntopts, optarg, sizeof (mntopts));
6460                         break;
6461                 case 'O':
6462                         flags |= MS_OVERLAY;
6463                         break;
6464                 case 'm':
6465                         flags |= MS_NOMNTTAB;
6466                         break;
6467                 case ':':
6468                         (void) fprintf(stderr, gettext("missing argument for "
6469                             "'%c' option\n"), optopt);
6470                         usage(B_FALSE);
6471                         break;
6472                 case '?':
6473                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6474                             optopt);
6475                         (void) fprintf(stderr, gettext("usage: mount [-o opts] "
6476                             "<path>\n"));
6477                         return (2);
6478                 }
6479         }
6480
6481         argc -= optind;
6482         argv += optind;
6483
6484         /* check that we only have two arguments */
6485         if (argc != 2) {
6486                 if (argc == 0)
6487                         (void) fprintf(stderr, gettext("missing dataset "
6488                             "argument\n"));
6489                 else if (argc == 1)
6490                         (void) fprintf(stderr,
6491                             gettext("missing mountpoint argument\n"));
6492                 else
6493                         (void) fprintf(stderr, gettext("too many arguments\n"));
6494                 (void) fprintf(stderr, "usage: mount <dataset> <mountpoint>\n");
6495                 return (2);
6496         }
6497
6498         dataset = argv[0];
6499         path = argv[1];
6500
6501         /* try to open the dataset */
6502         if ((zhp = zfs_open(g_zfs, dataset, ZFS_TYPE_FILESYSTEM)) == NULL)
6503                 return (1);
6504
6505         (void) zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
6506             sizeof (mountpoint), NULL, NULL, 0, B_FALSE);
6507
6508         /* check for legacy mountpoint and complain appropriately */
6509         ret = 0;
6510         if (strcmp(mountpoint, ZFS_MOUNTPOINT_LEGACY) == 0) {
6511                 if (zmount(dataset, path, flags, MNTTYPE_ZFS,
6512                     NULL, 0, mntopts, sizeof (mntopts)) != 0) {
6513                         (void) fprintf(stderr, gettext("mount failed: %s\n"),
6514                             strerror(errno));
6515                         ret = 1;
6516                 }
6517         } else {
6518                 (void) fprintf(stderr, gettext("filesystem '%s' cannot be "
6519                     "mounted using 'mount -t zfs'\n"), dataset);
6520                 (void) fprintf(stderr, gettext("Use 'zfs set mountpoint=%s' "
6521                     "instead.\n"), path);
6522                 (void) fprintf(stderr, gettext("If you must use 'mount -t zfs' "
6523                     "or /etc/fstab, use 'zfs set mountpoint=legacy'.\n"));
6524                 (void) fprintf(stderr, gettext("See zfs(8) for more "
6525                     "information.\n"));
6526                 ret = 1;
6527         }
6528
6529         return (ret);
6530 }
6531
6532 /*
6533  * Called when invoked as /etc/fs/zfs/umount.  Unlike a manual mount, we allow
6534  * unmounts of non-legacy filesystems, as this is the dominant administrative
6535  * interface.
6536  */
6537 static int
6538 manual_unmount(int argc, char **argv)
6539 {
6540         int flags = 0;
6541         int c;
6542
6543         /* check options */
6544         while ((c = getopt(argc, argv, "f")) != -1) {
6545                 switch (c) {
6546                 case 'f':
6547                         flags = MS_FORCE;
6548                         break;
6549                 case '?':
6550                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6551                             optopt);
6552                         (void) fprintf(stderr, gettext("usage: unmount [-f] "
6553                             "<path>\n"));
6554                         return (2);
6555                 }
6556         }
6557
6558         argc -= optind;
6559         argv += optind;
6560
6561         /* check arguments */
6562         if (argc != 1) {
6563                 if (argc == 0)
6564                         (void) fprintf(stderr, gettext("missing path "
6565                             "argument\n"));
6566                 else
6567                         (void) fprintf(stderr, gettext("too many arguments\n"));
6568                 (void) fprintf(stderr, gettext("usage: unmount [-f] <path>\n"));
6569                 return (2);
6570         }
6571
6572         return (unshare_unmount_path(OP_MOUNT, argv[0], flags, B_TRUE));
6573 }
6574
6575 static int
6576 find_command_idx(char *command, int *idx)
6577 {
6578         int i;
6579
6580         for (i = 0; i < NCOMMAND; i++) {
6581                 if (command_table[i].name == NULL)
6582                         continue;
6583
6584                 if (strcmp(command, command_table[i].name) == 0) {
6585                         *idx = i;
6586                         return (0);
6587                 }
6588         }
6589         return (1);
6590 }
6591
6592 static int
6593 zfs_do_diff(int argc, char **argv)
6594 {
6595         zfs_handle_t *zhp;
6596         int flags = 0;
6597         char *tosnap = NULL;
6598         char *fromsnap = NULL;
6599         char *atp, *copy;
6600         int err = 0;
6601         int c;
6602
6603         while ((c = getopt(argc, argv, "FHt")) != -1) {
6604                 switch (c) {
6605                 case 'F':
6606                         flags |= ZFS_DIFF_CLASSIFY;
6607                         break;
6608                 case 'H':
6609                         flags |= ZFS_DIFF_PARSEABLE;
6610                         break;
6611                 case 't':
6612                         flags |= ZFS_DIFF_TIMESTAMP;
6613                         break;
6614                 default:
6615                         (void) fprintf(stderr,
6616                             gettext("invalid option '%c'\n"), optopt);
6617                         usage(B_FALSE);
6618                 }
6619         }
6620
6621         argc -= optind;
6622         argv += optind;
6623
6624         if (argc < 1) {
6625                 (void) fprintf(stderr,
6626                 gettext("must provide at least one snapshot name\n"));
6627                 usage(B_FALSE);
6628         }
6629
6630         if (argc > 2) {
6631                 (void) fprintf(stderr, gettext("too many arguments\n"));
6632                 usage(B_FALSE);
6633         }
6634
6635         fromsnap = argv[0];
6636         tosnap = (argc == 2) ? argv[1] : NULL;
6637
6638         copy = NULL;
6639         if (*fromsnap != '@')
6640                 copy = strdup(fromsnap);
6641         else if (tosnap)
6642                 copy = strdup(tosnap);
6643         if (copy == NULL)
6644                 usage(B_FALSE);
6645
6646         if (atp = strchr(copy, '@'))
6647                 *atp = '\0';
6648
6649         if ((zhp = zfs_open(g_zfs, copy, ZFS_TYPE_FILESYSTEM)) == NULL)
6650                 return (1);
6651
6652         free(copy);
6653
6654         /*
6655          * Ignore SIGPIPE so that the library can give us
6656          * information on any failure
6657          */
6658         (void) sigignore(SIGPIPE);
6659
6660         err = zfs_show_diffs(zhp, STDOUT_FILENO, fromsnap, tosnap, flags);
6661
6662         zfs_close(zhp);
6663
6664         return (err != 0);
6665 }
6666
6667 int
6668 main(int argc, char **argv)
6669 {
6670         int ret = 0;
6671         int i;
6672         char *progname;
6673         char *cmdname;
6674
6675         (void) setlocale(LC_ALL, "");
6676         (void) textdomain(TEXT_DOMAIN);
6677
6678         opterr = 0;
6679
6680         if ((g_zfs = libzfs_init()) == NULL) {
6681                 (void) fprintf(stderr, gettext("internal error: failed to "
6682                     "initialize ZFS library\n"));
6683                 return (1);
6684         }
6685
6686         zfs_save_arguments(argc, argv, history_str, sizeof (history_str));
6687
6688         libzfs_print_on_error(g_zfs, B_TRUE);
6689
6690         if ((mnttab_file = fopen(MNTTAB, "r")) == NULL) {
6691                 (void) fprintf(stderr, gettext("internal error: unable to "
6692                     "open %s\n"), MNTTAB);
6693                 return (1);
6694         }
6695
6696         /*
6697          * This command also doubles as the /etc/fs mount and unmount program.
6698          * Determine if we should take this behavior based on argv[0].
6699          */
6700         progname = basename(argv[0]);
6701         if (strcmp(progname, "mount") == 0) {
6702                 ret = manual_mount(argc, argv);
6703         } else if (strcmp(progname, "umount") == 0) {
6704                 ret = manual_unmount(argc, argv);
6705         } else {
6706                 /*
6707                  * Make sure the user has specified some command.
6708                  */
6709                 if (argc < 2) {
6710                         (void) fprintf(stderr, gettext("missing command\n"));
6711                         usage(B_FALSE);
6712                 }
6713
6714                 cmdname = argv[1];
6715
6716                 /*
6717                  * The 'umount' command is an alias for 'unmount'
6718                  */
6719                 if (strcmp(cmdname, "umount") == 0)
6720                         cmdname = "unmount";
6721
6722                 /*
6723                  * The 'recv' command is an alias for 'receive'
6724                  */
6725                 if (strcmp(cmdname, "recv") == 0)
6726                         cmdname = "receive";
6727
6728                 /*
6729                  * Special case '-?'
6730                  */
6731                 if (strcmp(cmdname, "-?") == 0)
6732                         usage(B_TRUE);
6733
6734                 /*
6735                  * Run the appropriate command.
6736                  */
6737                 libzfs_mnttab_cache(g_zfs, B_TRUE);
6738                 if (find_command_idx(cmdname, &i) == 0) {
6739                         current_command = &command_table[i];
6740                         ret = command_table[i].func(argc - 1, argv + 1);
6741                 } else if (strchr(cmdname, '=') != NULL) {
6742                         verify(find_command_idx("set", &i) == 0);
6743                         current_command = &command_table[i];
6744                         ret = command_table[i].func(argc, argv);
6745                 } else {
6746                         (void) fprintf(stderr, gettext("unrecognized "
6747                             "command '%s'\n"), cmdname);
6748                         usage(B_FALSE);
6749                 }
6750                 libzfs_mnttab_cache(g_zfs, B_FALSE);
6751         }
6752
6753         (void) fclose(mnttab_file);
6754
6755         if (ret == 0 && log_history)
6756                 (void) zpool_log_history(g_zfs, history_str);
6757
6758         libzfs_fini(g_zfs);
6759
6760         /*
6761          * The 'ZFS_ABORT' environment variable causes us to dump core on exit
6762          * for the purposes of running ::findleaks.
6763          */
6764         if (getenv("ZFS_ABORT") != NULL) {
6765                 (void) printf("dumping core by request\n");
6766                 abort();
6767         }
6768
6769         return (ret);
6770 }