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 (c) 2011, 2016 by Delphix. All rights reserved.
  25  * Copyright 2012 Milan Jurik. All rights reserved.
  26  * Copyright (c) 2012, Joyent, Inc. All rights reserved.
  27  * Copyright (c) 2011-2012 Pawel Jakub Dawidek. All rights reserved.
  28  * Copyright (c) 2012 Martin Matuska <mm@FreeBSD.org>. All rights reserved.
  29  * Copyright (c) 2013 Steven Hartland.  All rights reserved.
  30  * Copyright (c) 2014 Integros [integros.com]
  31  * Copyright 2016 Igor Kozhukhov <ikozhukhov@gmail.com>.
  32  * Copyright 2016 Nexenta Systems, Inc.
  33  */
  34
  35 #include <assert.h>
  36 #include <ctype.h>
  37 #include <errno.h>
  38 #include <getopt.h>
  39 #include <libgen.h>
  40 #include <libintl.h>
  41 #include <libuutil.h>
  42 #include <libnvpair.h>
  43 #include <locale.h>
  44 #include <stddef.h>
  45 #include <stdio.h>
  46 #include <stdlib.h>
  47 #include <strings.h>
  48 #include <unistd.h>
  49 #include <fcntl.h>
  50 #include <zone.h>
  51 #include <grp.h>
  52 #include <pwd.h>
  53 #include <signal.h>
  54 #include <sys/debug.h>
  55 #include <sys/list.h>
  56 #include <sys/mntent.h>
  57 #include <sys/mnttab.h>
  58 #include <sys/mount.h>
  59 #include <sys/stat.h>
  60 #include <sys/fs/zfs.h>
  61 #include <sys/types.h>
  62 #include <time.h>
  63 #include <err.h>
  64 #include <jail.h>
  65
  66 #include <libzfs.h>
  67 #include <libzfs_core.h>
  68 #include <zfs_prop.h>
  69 #include <zfs_deleg.h>
  70 #include <libuutil.h>
  71 #ifdef illumos
  72 #include <aclutils.h>
  73 #include <directory.h>
  74 #include <idmap.h>
  75 #include <libshare.h>
  76 #endif
  77
  78 #include "zfs_iter.h"
  79 #include "zfs_util.h"
  80 #include "zfs_comutil.h"
  81
  82 libzfs_handle_t *g_zfs;
  83
  84 static FILE *mnttab_file;
  85 static char history_str[HIS_MAX_RECORD_LEN];
  86 static boolean_t log_history = B_TRUE;
  87
  88 static int zfs_do_clone(int argc, char **argv);
  89 static int zfs_do_create(int argc, char **argv);
  90 static int zfs_do_destroy(int argc, char **argv);
  91 static int zfs_do_get(int argc, char **argv);
  92 static int zfs_do_inherit(int argc, char **argv);
  93 static int zfs_do_list(int argc, char **argv);
  94 static int zfs_do_mount(int argc, char **argv);
  95 static int zfs_do_rename(int argc, char **argv);
  96 static int zfs_do_rollback(int argc, char **argv);
  97 static int zfs_do_set(int argc, char **argv);
  98 static int zfs_do_upgrade(int argc, char **argv);
  99 static int zfs_do_snapshot(int argc, char **argv);
 100 static int zfs_do_unmount(int argc, char **argv);
 101 static int zfs_do_share(int argc, char **argv);
 102 static int zfs_do_unshare(int argc, char **argv);
 103 static int zfs_do_send(int argc, char **argv);
 104 static int zfs_do_receive(int argc, char **argv);
 105 static int zfs_do_promote(int argc, char **argv);
 106 static int zfs_do_userspace(int argc, char **argv);
 107 static int zfs_do_allow(int argc, char **argv);
 108 static int zfs_do_unallow(int argc, char **argv);
 109 static int zfs_do_hold(int argc, char **argv);
 110 static int zfs_do_holds(int argc, char **argv);
 111 static int zfs_do_release(int argc, char **argv);
 112 static int zfs_do_diff(int argc, char **argv);
 113 static int zfs_do_jail(int argc, char **argv);
 114 static int zfs_do_unjail(int argc, char **argv);
 115 static int zfs_do_bookmark(int argc, char **argv);
 116 static int zfs_do_remap(int argc, char **argv);
 117 static int zfs_do_channel_program(int argc, char **argv);
 118
 119 /*
 120  * Enable a reasonable set of defaults for libumem debugging on DEBUG builds.
 121  */
 122
 123 #ifdef DEBUG
 124 const char *
 125 _umem_debug_init(void)
 126 {
 127         return ("default,verbose"); /* $UMEM_DEBUG setting */
 128 }
 129
 130 const char *
 131 _umem_logging_init(void)
 132 {
 133         return ("fail,contents"); /* $UMEM_LOGGING setting */
 134 }
 135 #endif
 136
 137 typedef enum {
 138         HELP_CLONE,
 139         HELP_CREATE,
 140         HELP_DESTROY,
 141         HELP_GET,
 142         HELP_INHERIT,
 143         HELP_UPGRADE,
 144         HELP_JAIL,
 145         HELP_UNJAIL,
 146         HELP_LIST,
 147         HELP_MOUNT,
 148         HELP_PROMOTE,
 149         HELP_RECEIVE,
 150         HELP_RENAME,
 151         HELP_ROLLBACK,
 152         HELP_SEND,
 153         HELP_SET,
 154         HELP_SHARE,
 155         HELP_SNAPSHOT,
 156         HELP_UNMOUNT,
 157         HELP_UNSHARE,
 158         HELP_ALLOW,
 159         HELP_UNALLOW,
 160         HELP_USERSPACE,
 161         HELP_GROUPSPACE,
 162         HELP_HOLD,
 163         HELP_HOLDS,
 164         HELP_RELEASE,
 165         HELP_DIFF,
 166         HELP_REMAP,
 167         HELP_BOOKMARK,
 168         HELP_CHANNEL_PROGRAM,
 169 } zfs_help_t;
 170
 171 typedef struct zfs_command {
 172         const char      *name;
 173         int             (*func)(int argc, char **argv);
 174         zfs_help_t      usage;
 175 } zfs_command_t;
 176
 177 /*
 178  * Master command table.  Each ZFS command has a name, associated function, and
 179  * usage message.  The usage messages need to be internationalized, so we have
 180  * to have a function to return the usage message based on a command index.
 181  *
 182  * These commands are organized according to how they are displayed in the usage
 183  * message.  An empty command (one with a NULL name) indicates an empty line in
 184  * the generic usage message.
 185  */
 186 static zfs_command_t command_table[] = {
 187         { "create",     zfs_do_create,          HELP_CREATE             },
 188         { "destroy",    zfs_do_destroy,         HELP_DESTROY            },
 189         { NULL },
 190         { "snapshot",   zfs_do_snapshot,        HELP_SNAPSHOT           },
 191         { "rollback",   zfs_do_rollback,        HELP_ROLLBACK           },
 192         { "clone",      zfs_do_clone,           HELP_CLONE              },
 193         { "promote",    zfs_do_promote,         HELP_PROMOTE            },
 194         { "rename",     zfs_do_rename,          HELP_RENAME             },
 195         { "bookmark",   zfs_do_bookmark,        HELP_BOOKMARK           },
 196         { "program",    zfs_do_channel_program, HELP_CHANNEL_PROGRAM    },
 197         { NULL },
 198         { "list",       zfs_do_list,            HELP_LIST               },
 199         { NULL },
 200         { "set",        zfs_do_set,             HELP_SET                },
 201         { "get",        zfs_do_get,             HELP_GET                },
 202         { "inherit",    zfs_do_inherit,         HELP_INHERIT            },
 203         { "upgrade",    zfs_do_upgrade,         HELP_UPGRADE            },
 204         { "userspace",  zfs_do_userspace,       HELP_USERSPACE          },
 205         { "groupspace", zfs_do_userspace,       HELP_GROUPSPACE         },
 206         { NULL },
 207         { "mount",      zfs_do_mount,           HELP_MOUNT              },
 208         { "unmount",    zfs_do_unmount,         HELP_UNMOUNT            },
 209         { "share",      zfs_do_share,           HELP_SHARE              },
 210         { "unshare",    zfs_do_unshare,         HELP_UNSHARE            },
 211         { NULL },
 212         { "send",       zfs_do_send,            HELP_SEND               },
 213         { "receive",    zfs_do_receive,         HELP_RECEIVE            },
 214         { NULL },
 215         { "allow",      zfs_do_allow,           HELP_ALLOW              },
 216         { NULL },
 217         { "unallow",    zfs_do_unallow,         HELP_UNALLOW            },
 218         { NULL },
 219         { "hold",       zfs_do_hold,            HELP_HOLD               },
 220         { "holds",      zfs_do_holds,           HELP_HOLDS              },
 221         { "release",    zfs_do_release,         HELP_RELEASE            },
 222         { "diff",       zfs_do_diff,            HELP_DIFF               },
 223         { NULL },
 224         { "jail",       zfs_do_jail,            HELP_JAIL               },
 225         { "unjail",     zfs_do_unjail,          HELP_UNJAIL             },
 226         { "remap",      zfs_do_remap,           HELP_REMAP              },
 227 };
 228
 229 #define NCOMMAND        (sizeof (command_table) / sizeof (command_table[0]))
 230
 231 zfs_command_t *current_command;
 232
 233 static const char *
 234 get_usage(zfs_help_t idx)
 235 {
 236         switch (idx) {
 237         case HELP_CLONE:
 238                 return (gettext("\tclone [-p] [-o property=value] ... "
 239                     "<snapshot> <filesystem|volume>\n"));
 240         case HELP_CREATE:
 241                 return (gettext("\tcreate [-pu] [-o property=value] ... "
 242                     "<filesystem>\n"
 243                     "\tcreate [-ps] [-b blocksize] [-o property=value] ... "
 244                     "-V <size> <volume>\n"));
 245         case HELP_DESTROY:
 246                 return (gettext("\tdestroy [-fnpRrv] <filesystem|volume>\n"
 247                     "\tdestroy [-dnpRrv] "
 248                     "<filesystem|volume>@<snap>[%<snap>][,...]\n"
 249                     "\tdestroy <filesystem|volume>#<bookmark>\n"));
 250         case HELP_GET:
 251                 return (gettext("\tget [-rHp] [-d max] "
 252                     "[-o \"all\" | field[,...]]\n"
 253                     "\t    [-t type[,...]] [-s source[,...]]\n"
 254                     "\t    <\"all\" | property[,...]> "
 255                     "[filesystem|volume|snapshot|bookmark] ...\n"));
 256         case HELP_INHERIT:
 257                 return (gettext("\tinherit [-rS] <property> "
 258                     "<filesystem|volume|snapshot> ...\n"));
 259         case HELP_UPGRADE:
 260                 return (gettext("\tupgrade [-v]\n"
 261                     "\tupgrade [-r] [-V version] <-a | filesystem ...>\n"));
 262         case HELP_JAIL:
 263                 return (gettext("\tjail <jailid|jailname> <filesystem>\n"));
 264         case HELP_UNJAIL:
 265                 return (gettext("\tunjail <jailid|jailname> <filesystem>\n"));
 266         case HELP_LIST:
 267                 return (gettext("\tlist [-Hp] [-r|-d max] [-o property[,...]] "
 268                     "[-s property]...\n\t    [-S property]... [-t type[,...]] "
 269                     "[filesystem|volume|snapshot] ...\n"));
 270         case HELP_MOUNT:
 271                 return (gettext("\tmount\n"
 272                     "\tmount [-vO] [-o opts] <-a | filesystem>\n"));
 273         case HELP_PROMOTE:
 274                 return (gettext("\tpromote <clone-filesystem>\n"));
 275         case HELP_RECEIVE:
 276                 return (gettext("\treceive|recv [-vnsFu] <filesystem|volume|"
 277                     "snapshot>\n"
 278                     "\treceive|recv [-vnsFu] [-o origin=<snapshot>] [-d | -e] "
 279                     "<filesystem>\n"
 280                     "\treceive|recv -A <filesystem|volume>\n"));
 281         case HELP_RENAME:
 282                 return (gettext("\trename [-f] <filesystem|volume|snapshot> "
 283                     "<filesystem|volume|snapshot>\n"
 284                     "\trename [-f] -p <filesystem|volume> <filesystem|volume>\n"
 285                     "\trename -r <snapshot> <snapshot>\n"
 286                     "\trename -u [-p] <filesystem> <filesystem>"));
 287         case HELP_ROLLBACK:
 288                 return (gettext("\trollback [-rRf] <snapshot>\n"));
 289         case HELP_SEND:
 290                 return (gettext("\tsend [-DnPpRvLec] [-[iI] snapshot] "
 291                     "<snapshot>\n"
 292                     "\tsend [-Le] [-i snapshot|bookmark] "
 293                     "<filesystem|volume|snapshot>\n"
 294                     "\tsend [-nvPe] -t <receive_resume_token>\n"));
 295         case HELP_SET:
 296                 return (gettext("\tset <property=value> ... "
 297                     "<filesystem|volume|snapshot> ...\n"));
 298         case HELP_SHARE:
 299                 return (gettext("\tshare <-a | filesystem>\n"));
 300         case HELP_SNAPSHOT:
 301                 return (gettext("\tsnapshot|snap [-r] [-o property=value] ... "
 302                     "<filesystem|volume>@<snap> ...\n"));
 303         case HELP_UNMOUNT:
 304                 return (gettext("\tunmount|umount [-f] "
 305                     "<-a | filesystem|mountpoint>\n"));
 306         case HELP_UNSHARE:
 307                 return (gettext("\tunshare "
 308                     "<-a | filesystem|mountpoint>\n"));
 309         case HELP_ALLOW:
 310                 return (gettext("\tallow <filesystem|volume>\n"
 311                     "\tallow [-ldug] "
 312                     "<\"everyone\"|user|group>[,...] <perm|@setname>[,...]\n"
 313                     "\t    <filesystem|volume>\n"
 314                     "\tallow [-ld] -e <perm|@setname>[,...] "
 315                     "<filesystem|volume>\n"
 316                     "\tallow -c <perm|@setname>[,...] <filesystem|volume>\n"
 317                     "\tallow -s @setname <perm|@setname>[,...] "
 318                     "<filesystem|volume>\n"));
 319         case HELP_UNALLOW:
 320                 return (gettext("\tunallow [-rldug] "
 321                     "<\"everyone\"|user|group>[,...]\n"
 322                     "\t    [<perm|@setname>[,...]] <filesystem|volume>\n"
 323                     "\tunallow [-rld] -e [<perm|@setname>[,...]] "
 324                     "<filesystem|volume>\n"
 325                     "\tunallow [-r] -c [<perm|@setname>[,...]] "
 326                     "<filesystem|volume>\n"
 327                     "\tunallow [-r] -s @setname [<perm|@setname>[,...]] "
 328                     "<filesystem|volume>\n"));
 329         case HELP_USERSPACE:
 330                 return (gettext("\tuserspace [-Hinp] [-o field[,...]] "
 331                     "[-s field] ...\n"
 332                     "\t    [-S field] ... [-t type[,...]] "
 333                     "<filesystem|snapshot>\n"));
 334         case HELP_GROUPSPACE:
 335                 return (gettext("\tgroupspace [-Hinp] [-o field[,...]] "
 336                     "[-s field] ...\n"
 337                     "\t    [-S field] ... [-t type[,...]] "
 338                     "<filesystem|snapshot>\n"));
 339         case HELP_HOLD:
 340                 return (gettext("\thold [-r] <tag> <snapshot> ...\n"));
 341         case HELP_HOLDS:
 342                 return (gettext("\tholds [-Hp] [-r|-d depth] "
 343                     "<filesystem|volume|snapshot> ...\n"));
 344         case HELP_RELEASE:
 345                 return (gettext("\trelease [-r] <tag> <snapshot> ...\n"));
 346         case HELP_DIFF:
 347                 return (gettext("\tdiff [-FHt] <snapshot> "
 348                     "[snapshot|filesystem]\n"));
 349         case HELP_REMAP:
 350                 return (gettext("\tremap <filesystem | volume>\n"));
 351         case HELP_BOOKMARK:
 352                 return (gettext("\tbookmark <snapshot> <bookmark>\n"));
 353         case HELP_CHANNEL_PROGRAM:
 354                 return (gettext("\tprogram [-n] [-t <instruction limit>] "
 355                     "[-m <memory limit (b)>] <pool> <program file> "
 356                     "[lua args...]\n"));
 357         }
 358
 359         abort();
 360         /* NOTREACHED */
 361 }
 362
 363 void
 364 nomem(void)
 365 {
 366         (void) fprintf(stderr, gettext("internal error: out of memory\n"));
 367         exit(1);
 368 }
 369
 370 /*
 371  * Utility function to guarantee malloc() success.
 372  */
 373
 374 void *
 375 safe_malloc(size_t size)
 376 {
 377         void *data;
 378
 379         if ((data = calloc(1, size)) == NULL)
 380                 nomem();
 381
 382         return (data);
 383 }
 384
 385 void *
 386 safe_realloc(void *data, size_t size)
 387 {
 388         void *newp;
 389         if ((newp = realloc(data, size)) == NULL) {
 390                 free(data);
 391                 nomem();
 392         }
 393
 394         return (newp);
 395 }
 396
 397 static char *
 398 safe_strdup(char *str)
 399 {
 400         char *dupstr = strdup(str);
 401
 402         if (dupstr == NULL)
 403                 nomem();
 404
 405         return (dupstr);
 406 }
 407
 408 /*
 409  * Callback routine that will print out information for each of
 410  * the properties.
 411  */
 412 static int
 413 usage_prop_cb(int prop, void *cb)
 414 {
 415         FILE *fp = cb;
 416
 417         (void) fprintf(fp, "\t%-15s ", zfs_prop_to_name(prop));
 418
 419         if (zfs_prop_readonly(prop))
 420                 (void) fprintf(fp, " NO    ");
 421         else
 422                 (void) fprintf(fp, "YES    ");
 423
 424         if (zfs_prop_inheritable(prop))
 425                 (void) fprintf(fp, "  YES   ");
 426         else
 427                 (void) fprintf(fp, "   NO   ");
 428
 429         if (zfs_prop_values(prop) == NULL)
 430                 (void) fprintf(fp, "-\n");
 431         else
 432                 (void) fprintf(fp, "%s\n", zfs_prop_values(prop));
 433
 434         return (ZPROP_CONT);
 435 }
 436
 437 /*
 438  * Display usage message.  If we're inside a command, display only the usage for
 439  * that command.  Otherwise, iterate over the entire command table and display
 440  * a complete usage message.
 441  */
 442 static void
 443 usage(boolean_t requested)
 444 {
 445         int i;
 446         boolean_t show_properties = B_FALSE;
 447         FILE *fp = requested ? stdout : stderr;
 448
 449         if (current_command == NULL) {
 450
 451                 (void) fprintf(fp, gettext("usage: zfs command args ...\n"));
 452                 (void) fprintf(fp,
 453                     gettext("where 'command' is one of the following:\n\n"));
 454
 455                 for (i = 0; i < NCOMMAND; i++) {
 456                         if (command_table[i].name == NULL)
 457                                 (void) fprintf(fp, "\n");
 458                         else
 459                                 (void) fprintf(fp, "%s",
 460                                     get_usage(command_table[i].usage));
 461                 }
 462
 463                 (void) fprintf(fp, gettext("\nEach dataset is of the form: "
 464                     "pool/[dataset/]*dataset[@name]\n"));
 465         } else {
 466                 (void) fprintf(fp, gettext("usage:\n"));
 467                 (void) fprintf(fp, "%s", get_usage(current_command->usage));
 468         }
 469
 470         if (current_command != NULL &&
 471             (strcmp(current_command->name, "set") == 0 ||
 472             strcmp(current_command->name, "get") == 0 ||
 473             strcmp(current_command->name, "inherit") == 0 ||
 474             strcmp(current_command->name, "list") == 0))
 475                 show_properties = B_TRUE;
 476
 477         if (show_properties) {
 478                 (void) fprintf(fp,
 479                     gettext("\nThe following properties are supported:\n"));
 480
 481                 (void) fprintf(fp, "\n\t%-14s %s  %s   %s\n\n",
 482                     "PROPERTY", "EDIT", "INHERIT", "VALUES");
 483
 484                 /* Iterate over all properties */
 485                 (void) zprop_iter(usage_prop_cb, fp, B_FALSE, B_TRUE,
 486                     ZFS_TYPE_DATASET);
 487
 488                 (void) fprintf(fp, "\t%-15s ", "userused@...");
 489                 (void) fprintf(fp, " NO       NO   <size>\n");
 490                 (void) fprintf(fp, "\t%-15s ", "groupused@...");
 491                 (void) fprintf(fp, " NO       NO   <size>\n");
 492                 (void) fprintf(fp, "\t%-15s ", "userquota@...");
 493                 (void) fprintf(fp, "YES       NO   <size> | none\n");
 494                 (void) fprintf(fp, "\t%-15s ", "groupquota@...");
 495                 (void) fprintf(fp, "YES       NO   <size> | none\n");
 496                 (void) fprintf(fp, "\t%-15s ", "written@<snap>");
 497                 (void) fprintf(fp, " NO       NO   <size>\n");
 498
 499                 (void) fprintf(fp, gettext("\nSizes are specified in bytes "
 500                     "with standard units such as K, M, G, etc.\n"));
 501                 (void) fprintf(fp, gettext("\nUser-defined properties can "
 502                     "be specified by using a name containing a colon (:).\n"));
 503                 (void) fprintf(fp, gettext("\nThe {user|group}{used|quota}@ "
 504                     "properties must be appended with\n"
 505                     "a user or group specifier of one of these forms:\n"
 506                     "    POSIX name      (eg: \"matt\")\n"
 507                     "    POSIX id        (eg: \"126829\")\n"
 508                     "    SMB name@domain (eg: \"matt@sun\")\n"
 509                     "    SMB SID         (eg: \"S-1-234-567-89\")\n"));
 510         } else {
 511                 (void) fprintf(fp,
 512                     gettext("\nFor the property list, run: %s\n"),
 513                     "zfs set|get");
 514                 (void) fprintf(fp,
 515                     gettext("\nFor the delegated permission list, run: %s\n"),
 516                     "zfs allow|unallow");
 517         }
 518
 519         /*
 520          * See comments at end of main().
 521          */
 522         if (getenv("ZFS_ABORT") != NULL) {
 523                 (void) printf("dumping core by request\n");
 524                 abort();
 525         }
 526
 527         exit(requested ? 0 : 2);
 528 }
 529
 530 /*
 531  * Take a property=value argument string and add it to the given nvlist.
 532  * Modifies the argument inplace.
 533  */
 534 static int
 535 parseprop(nvlist_t *props, char *propname)
 536 {
 537         char *propval, *strval;
 538
 539         if ((propval = strchr(propname, '=')) == NULL) {
 540                 (void) fprintf(stderr, gettext("missing "
 541                     "'=' for property=value argument\n"));
 542                 return (-1);
 543         }
 544         *propval = '\0';
 545         propval++;
 546         if (nvlist_lookup_string(props, propname, &strval) == 0) {
 547                 (void) fprintf(stderr, gettext("property '%s' "
 548                     "specified multiple times\n"), propname);
 549                 return (-1);
 550         }
 551         if (nvlist_add_string(props, propname, propval) != 0)
 552                 nomem();
 553         return (0);
 554 }
 555
 556 static int
 557 parse_depth(char *opt, int *flags)
 558 {
 559         char *tmp;
 560         int depth;
 561
 562         depth = (int)strtol(opt, &tmp, 0);
 563         if (*tmp) {
 564                 (void) fprintf(stderr,
 565                     gettext("%s is not an integer\n"), opt);
 566                 usage(B_FALSE);
 567         }
 568         if (depth < 0) {
 569                 (void) fprintf(stderr,
 570                     gettext("Depth can not be negative.\n"));
 571                 usage(B_FALSE);
 572         }
 573         *flags |= (ZFS_ITER_DEPTH_LIMIT|ZFS_ITER_RECURSE);
 574         return (depth);
 575 }
 576
 577 #define PROGRESS_DELAY 2                /* seconds */
 578
 579 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";
 580 static time_t pt_begin;
 581 static char *pt_header = NULL;
 582 static boolean_t pt_shown;
 583
 584 static void
 585 start_progress_timer(void)
 586 {
 587         pt_begin = time(NULL) + PROGRESS_DELAY;
 588         pt_shown = B_FALSE;
 589 }
 590
 591 static void
 592 set_progress_header(char *header)
 593 {
 594         assert(pt_header == NULL);
 595         pt_header = safe_strdup(header);
 596         if (pt_shown) {
 597                 (void) printf("%s: ", header);
 598                 (void) fflush(stdout);
 599         }
 600 }
 601
 602 static void
 603 update_progress(char *update)
 604 {
 605         if (!pt_shown && time(NULL) > pt_begin) {
 606                 int len = strlen(update);
 607
 608                 (void) printf("%s: %s%*.*s", pt_header, update, len, len,
 609                     pt_reverse);
 610                 (void) fflush(stdout);
 611                 pt_shown = B_TRUE;
 612         } else if (pt_shown) {
 613                 int len = strlen(update);
 614
 615                 (void) printf("%s%*.*s", update, len, len, pt_reverse);
 616                 (void) fflush(stdout);
 617         }
 618 }
 619
 620 static void
 621 finish_progress(char *done)
 622 {
 623         if (pt_shown) {
 624                 (void) printf("%s\n", done);
 625                 (void) fflush(stdout);
 626         }
 627         free(pt_header);
 628         pt_header = NULL;
 629 }
 630
 631 /*
 632  * Check if the dataset is mountable and should be automatically mounted.
 633  */
 634 static boolean_t
 635 should_auto_mount(zfs_handle_t *zhp)
 636 {
 637         if (!zfs_prop_valid_for_type(ZFS_PROP_CANMOUNT, zfs_get_type(zhp)))
 638                 return (B_FALSE);
 639         return (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) == ZFS_CANMOUNT_ON);
 640 }
 641
 642 /*
 643  * zfs clone [-p] [-o prop=value] ... <snap> <fs | vol>
 644  *
 645  * Given an existing dataset, create a writable copy whose initial contents
 646  * are the same as the source.  The newly created dataset maintains a
 647  * dependency on the original; the original cannot be destroyed so long as
 648  * the clone exists.
 649  *
 650  * The '-p' flag creates all the non-existing ancestors of the target first.
 651  */
 652 static int
 653 zfs_do_clone(int argc, char **argv)
 654 {
 655         zfs_handle_t *zhp = NULL;
 656         boolean_t parents = B_FALSE;
 657         nvlist_t *props;
 658         int ret = 0;
 659         int c;
 660
 661         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
 662                 nomem();
 663
 664         /* check options */
 665         while ((c = getopt(argc, argv, "o:p")) != -1) {
 666                 switch (c) {
 667                 case 'o':
 668                         if (parseprop(props, optarg) != 0)
 669                                 return (1);
 670                         break;
 671                 case 'p':
 672                         parents = B_TRUE;
 673                         break;
 674                 case '?':
 675                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
 676                             optopt);
 677                         goto usage;
 678                 }
 679         }
 680
 681         argc -= optind;
 682         argv += optind;
 683
 684         /* check number of arguments */
 685         if (argc < 1) {
 686                 (void) fprintf(stderr, gettext("missing source dataset "
 687                     "argument\n"));
 688                 goto usage;
 689         }
 690         if (argc < 2) {
 691                 (void) fprintf(stderr, gettext("missing target dataset "
 692                     "argument\n"));
 693                 goto usage;
 694         }
 695         if (argc > 2) {
 696                 (void) fprintf(stderr, gettext("too many arguments\n"));
 697                 goto usage;
 698         }
 699
 700         /* open the source dataset */
 701         if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
 702                 return (1);
 703
 704         if (parents && zfs_name_valid(argv[1], ZFS_TYPE_FILESYSTEM |
 705             ZFS_TYPE_VOLUME)) {
 706                 /*
 707                  * Now create the ancestors of the target dataset.  If the
 708                  * target already exists and '-p' option was used we should not
 709                  * complain.
 710                  */
 711                 if (zfs_dataset_exists(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM |
 712                     ZFS_TYPE_VOLUME))
 713                         return (0);
 714                 if (zfs_create_ancestors(g_zfs, argv[1]) != 0)
 715                         return (1);
 716         }
 717
 718         /* pass to libzfs */
 719         ret = zfs_clone(zhp, argv[1], props);
 720
 721         /* create the mountpoint if necessary */
 722         if (ret == 0) {
 723                 zfs_handle_t *clone;
 724
 725                 clone = zfs_open(g_zfs, argv[1], ZFS_TYPE_DATASET);
 726                 if (clone != NULL) {
 727                         /*
 728                          * If the user doesn't want the dataset
 729                          * automatically mounted, then skip the mount/share
 730                          * step.
 731                          */
 732                         if (should_auto_mount(clone)) {
 733                                 if ((ret = zfs_mount(clone, NULL, 0)) != 0) {
 734                                         (void) fprintf(stderr, gettext("clone "
 735                                             "successfully created, "
 736                                             "but not mounted\n"));
 737                                 } else if ((ret = zfs_share(clone)) != 0) {
 738                                         (void) fprintf(stderr, gettext("clone "
 739                                             "successfully created, "
 740                                             "but not shared\n"));
 741                                 }
 742                         }
 743                         zfs_close(clone);
 744                 }
 745         }
 746
 747         zfs_close(zhp);
 748         nvlist_free(props);
 749
 750         return (!!ret);
 751
 752 usage:
 753         if (zhp)
 754                 zfs_close(zhp);
 755         nvlist_free(props);
 756         usage(B_FALSE);
 757         return (-1);
 758 }
 759
 760 /*
 761  * zfs create [-pu] [-o prop=value] ... fs
 762  * zfs create [-ps] [-b blocksize] [-o prop=value] ... -V vol size
 763  *
 764  * Create a new dataset.  This command can be used to create filesystems
 765  * and volumes.  Snapshot creation is handled by 'zfs snapshot'.
 766  * For volumes, the user must specify a size to be used.
 767  *
 768  * The '-s' flag applies only to volumes, and indicates that we should not try
 769  * to set the reservation for this volume.  By default we set a reservation
 770  * equal to the size for any volume.  For pools with SPA_VERSION >=
 771  * SPA_VERSION_REFRESERVATION, we set a refreservation instead.
 772  *
 773  * The '-p' flag creates all the non-existing ancestors of the target first.
 774  *
 775  * The '-u' flag prevents mounting of newly created file system.
 776  */
 777 static int
 778 zfs_do_create(int argc, char **argv)
 779 {
 780         zfs_type_t type = ZFS_TYPE_FILESYSTEM;
 781         zfs_handle_t *zhp = NULL;
 782         uint64_t volsize = 0;
 783         int c;
 784         boolean_t noreserve = B_FALSE;
 785         boolean_t bflag = B_FALSE;
 786         boolean_t parents = B_FALSE;
 787         boolean_t nomount = B_FALSE;
 788         int ret = 1;
 789         nvlist_t *props;
 790         uint64_t intval;
 791
 792         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
 793                 nomem();
 794
 795         /* check options */
 796         while ((c = getopt(argc, argv, ":V:b:so:pu")) != -1) {
 797                 switch (c) {
 798                 case 'V':
 799                         type = ZFS_TYPE_VOLUME;
 800                         if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
 801                                 (void) fprintf(stderr, gettext("bad volume "
 802                                     "size '%s': %s\n"), optarg,
 803                                     libzfs_error_description(g_zfs));
 804                                 goto error;
 805                         }
 806
 807                         if (nvlist_add_uint64(props,
 808                             zfs_prop_to_name(ZFS_PROP_VOLSIZE), intval) != 0)
 809                                 nomem();
 810                         volsize = intval;
 811                         break;
 812                 case 'p':
 813                         parents = B_TRUE;
 814                         break;
 815                 case 'b':
 816                         bflag = B_TRUE;
 817                         if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
 818                                 (void) fprintf(stderr, gettext("bad volume "
 819                                     "block size '%s': %s\n"), optarg,
 820                                     libzfs_error_description(g_zfs));
 821                                 goto error;
 822                         }
 823
 824                         if (nvlist_add_uint64(props,
 825                             zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
 826                             intval) != 0)
 827                                 nomem();
 828                         break;
 829                 case 'o':
 830                         if (parseprop(props, optarg) != 0)
 831                                 goto error;
 832                         break;
 833                 case 's':
 834                         noreserve = B_TRUE;
 835                         break;
 836                 case 'u':
 837                         nomount = B_TRUE;
 838                         break;
 839                 case ':':
 840                         (void) fprintf(stderr, gettext("missing size "
 841                             "argument\n"));
 842                         goto badusage;
 843                 case '?':
 844                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
 845                             optopt);
 846                         goto badusage;
 847                 }
 848         }
 849
 850         if ((bflag || noreserve) && type != ZFS_TYPE_VOLUME) {
 851                 (void) fprintf(stderr, gettext("'-s' and '-b' can only be "
 852                     "used when creating a volume\n"));
 853                 goto badusage;
 854         }
 855         if (nomount && type != ZFS_TYPE_FILESYSTEM) {
 856                 (void) fprintf(stderr, gettext("'-u' can only be "
 857                     "used when creating a file system\n"));
 858                 goto badusage;
 859         }
 860
 861         argc -= optind;
 862         argv += optind;
 863
 864         /* check number of arguments */
 865         if (argc == 0) {
 866                 (void) fprintf(stderr, gettext("missing %s argument\n"),
 867                     zfs_type_to_name(type));
 868                 goto badusage;
 869         }
 870         if (argc > 1) {
 871                 (void) fprintf(stderr, gettext("too many arguments\n"));
 872                 goto badusage;
 873         }
 874
 875         if (type == ZFS_TYPE_VOLUME && !noreserve) {
 876                 zpool_handle_t *zpool_handle;
 877                 nvlist_t *real_props = NULL;
 878                 uint64_t spa_version;
 879                 char *p;
 880                 zfs_prop_t resv_prop;
 881                 char *strval;
 882                 char msg[1024];
 883
 884                 if ((p = strchr(argv[0], '/')) != NULL)
 885                         *p = '\0';
 886                 zpool_handle = zpool_open(g_zfs, argv[0]);
 887                 if (p != NULL)
 888                         *p = '/';
 889                 if (zpool_handle == NULL)
 890                         goto error;
 891                 spa_version = zpool_get_prop_int(zpool_handle,
 892                     ZPOOL_PROP_VERSION, NULL);
 893                 if (spa_version >= SPA_VERSION_REFRESERVATION)
 894                         resv_prop = ZFS_PROP_REFRESERVATION;
 895                 else
 896                         resv_prop = ZFS_PROP_RESERVATION;
 897
 898                 (void) snprintf(msg, sizeof (msg),
 899                     gettext("cannot create '%s'"), argv[0]);
 900                 if (props && (real_props = zfs_valid_proplist(g_zfs, type,
 901                     props, 0, NULL, zpool_handle, msg)) == NULL) {
 902                         zpool_close(zpool_handle);
 903                         goto error;
 904                 }
 905                 zpool_close(zpool_handle);
 906
 907                 volsize = zvol_volsize_to_reservation(volsize, real_props);
 908                 nvlist_free(real_props);
 909
 910                 if (nvlist_lookup_string(props, zfs_prop_to_name(resv_prop),
 911                     &strval) != 0) {
 912                         if (nvlist_add_uint64(props,
 913                             zfs_prop_to_name(resv_prop), volsize) != 0) {
 914                                 nvlist_free(props);
 915                                 nomem();
 916                         }
 917                 }
 918         }
 919
 920         if (parents && zfs_name_valid(argv[0], type)) {
 921                 /*
 922                  * Now create the ancestors of target dataset.  If the target
 923                  * already exists and '-p' option was used we should not
 924                  * complain.
 925                  */
 926                 if (zfs_dataset_exists(g_zfs, argv[0], type)) {
 927                         ret = 0;
 928                         goto error;
 929                 }
 930                 if (zfs_create_ancestors(g_zfs, argv[0]) != 0)
 931                         goto error;
 932         }
 933
 934         /* pass to libzfs */
 935         if (zfs_create(g_zfs, argv[0], type, props) != 0)
 936                 goto error;
 937
 938         if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL)
 939                 goto error;
 940
 941         ret = 0;
 942
 943         /*
 944          * Mount and/or share the new filesystem as appropriate.  We provide a
 945          * verbose error message to let the user know that their filesystem was
 946          * in fact created, even if we failed to mount or share it.
 947          * If the user doesn't want the dataset automatically mounted,
 948          * then skip the mount/share step altogether.
 949          */
 950         if (!nomount && should_auto_mount(zhp)) {
 951                 if (zfs_mount(zhp, NULL, 0) != 0) {
 952                         (void) fprintf(stderr, gettext("filesystem "
 953                             "successfully created, but not mounted\n"));
 954                         ret = 1;
 955                 } else if (zfs_share(zhp) != 0) {
 956                         (void) fprintf(stderr, gettext("filesystem "
 957                             "successfully created, but not shared\n"));
 958                         ret = 1;
 959                 }
 960         }
 961
 962 error:
 963         if (zhp)
 964                 zfs_close(zhp);
 965         nvlist_free(props);
 966         return (ret);
 967 badusage:
 968         nvlist_free(props);
 969         usage(B_FALSE);
 970         return (2);
 971 }
 972
 973 /*
 974  * zfs destroy [-rRf] <fs, vol>
 975  * zfs destroy [-rRd] <snap>
 976  *
 977  *      -r      Recursively destroy all children
 978  *      -R      Recursively destroy all dependents, including clones
 979  *      -f      Force unmounting of any dependents
 980  *      -d      If we can't destroy now, mark for deferred destruction
 981  *
 982  * Destroys the given dataset.  By default, it will unmount any filesystems,
 983  * and refuse to destroy a dataset that has any dependents.  A dependent can
 984  * either be a child, or a clone of a child.
 985  */
 986 typedef struct destroy_cbdata {
 987         boolean_t       cb_first;
 988         boolean_t       cb_force;
 989         boolean_t       cb_recurse;
 990         boolean_t       cb_error;
 991         boolean_t       cb_doclones;
 992         zfs_handle_t    *cb_target;
 993         boolean_t       cb_defer_destroy;
 994         boolean_t       cb_verbose;
 995         boolean_t       cb_parsable;
 996         boolean_t       cb_dryrun;
 997         nvlist_t        *cb_nvl;
 998         nvlist_t        *cb_batchedsnaps;
 999
1000         /* first snap in contiguous run */
1001         char            *cb_firstsnap;
1002         /* previous snap in contiguous run */
1003         char            *cb_prevsnap;
1004         int64_t         cb_snapused;
1005         char            *cb_snapspec;
1006         char            *cb_bookmark;
1007 } destroy_cbdata_t;
1008
1009 /*
1010  * Check for any dependents based on the '-r' or '-R' flags.
1011  */
1012 static int
1013 destroy_check_dependent(zfs_handle_t *zhp, void *data)
1014 {
1015         destroy_cbdata_t *cbp = data;
1016         const char *tname = zfs_get_name(cbp->cb_target);
1017         const char *name = zfs_get_name(zhp);
1018
1019         if (strncmp(tname, name, strlen(tname)) == 0 &&
1020             (name[strlen(tname)] == '/' || name[strlen(tname)] == '@')) {
1021                 /*
1022                  * This is a direct descendant, not a clone somewhere else in
1023                  * the hierarchy.
1024                  */
1025                 if (cbp->cb_recurse)
1026                         goto out;
1027
1028                 if (cbp->cb_first) {
1029                         (void) fprintf(stderr, gettext("cannot destroy '%s': "
1030                             "%s has children\n"),
1031                             zfs_get_name(cbp->cb_target),
1032                             zfs_type_to_name(zfs_get_type(cbp->cb_target)));
1033                         (void) fprintf(stderr, gettext("use '-r' to destroy "
1034                             "the following datasets:\n"));
1035                         cbp->cb_first = B_FALSE;
1036                         cbp->cb_error = B_TRUE;
1037                 }
1038
1039                 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
1040         } else {
1041                 /*
1042                  * This is a clone.  We only want to report this if the '-r'
1043                  * wasn't specified, or the target is a snapshot.
1044                  */
1045                 if (!cbp->cb_recurse &&
1046                     zfs_get_type(cbp->cb_target) != ZFS_TYPE_SNAPSHOT)
1047                         goto out;
1048
1049                 if (cbp->cb_first) {
1050                         (void) fprintf(stderr, gettext("cannot destroy '%s': "
1051                             "%s has dependent clones\n"),
1052                             zfs_get_name(cbp->cb_target),
1053                             zfs_type_to_name(zfs_get_type(cbp->cb_target)));
1054                         (void) fprintf(stderr, gettext("use '-R' to destroy "
1055                             "the following datasets:\n"));
1056                         cbp->cb_first = B_FALSE;
1057                         cbp->cb_error = B_TRUE;
1058                         cbp->cb_dryrun = B_TRUE;
1059                 }
1060
1061                 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
1062         }
1063
1064 out:
1065         zfs_close(zhp);
1066         return (0);
1067 }
1068
1069 static int
1070 destroy_callback(zfs_handle_t *zhp, void *data)
1071 {
1072         destroy_cbdata_t *cb = data;
1073         const char *name = zfs_get_name(zhp);
1074
1075         if (cb->cb_verbose) {
1076                 if (cb->cb_parsable) {
1077                         (void) printf("destroy\t%s\n", name);
1078                 } else if (cb->cb_dryrun) {
1079                         (void) printf(gettext("would destroy %s\n"),
1080                             name);
1081                 } else {
1082                         (void) printf(gettext("will destroy %s\n"),
1083                             name);
1084                 }
1085         }
1086
1087         /*
1088          * Ignore pools (which we've already flagged as an error before getting
1089          * here).
1090          */
1091         if (strchr(zfs_get_name(zhp), '/') == NULL &&
1092             zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
1093                 zfs_close(zhp);
1094                 return (0);
1095         }
1096         if (cb->cb_dryrun) {
1097                 zfs_close(zhp);
1098                 return (0);
1099         }
1100
1101         /*
1102          * We batch up all contiguous snapshots (even of different
1103          * filesystems) and destroy them with one ioctl.  We can't
1104          * simply do all snap deletions and then all fs deletions,
1105          * because we must delete a clone before its origin.
1106          */
1107         if (zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT) {
1108                 fnvlist_add_boolean(cb->cb_batchedsnaps, name);
1109         } else {
1110                 int error = zfs_destroy_snaps_nvl(g_zfs,
1111                     cb->cb_batchedsnaps, B_FALSE);
1112                 fnvlist_free(cb->cb_batchedsnaps);
1113                 cb->cb_batchedsnaps = fnvlist_alloc();
1114
1115                 if (error != 0 ||
1116                     zfs_unmount(zhp, NULL, cb->cb_force ? MS_FORCE : 0) != 0 ||
1117                     zfs_destroy(zhp, cb->cb_defer_destroy) != 0) {
1118                         zfs_close(zhp);
1119                         return (-1);
1120                 }
1121         }
1122
1123         zfs_close(zhp);
1124         return (0);
1125 }
1126
1127 static int
1128 destroy_print_cb(zfs_handle_t *zhp, void *arg)
1129 {
1130         destroy_cbdata_t *cb = arg;
1131         const char *name = zfs_get_name(zhp);
1132         int err = 0;
1133
1134         if (nvlist_exists(cb->cb_nvl, name)) {
1135                 if (cb->cb_firstsnap == NULL)
1136                         cb->cb_firstsnap = strdup(name);
1137                 if (cb->cb_prevsnap != NULL)
1138                         free(cb->cb_prevsnap);
1139                 /* this snap continues the current range */
1140                 cb->cb_prevsnap = strdup(name);
1141                 if (cb->cb_firstsnap == NULL || cb->cb_prevsnap == NULL)
1142                         nomem();
1143                 if (cb->cb_verbose) {
1144                         if (cb->cb_parsable) {
1145                                 (void) printf("destroy\t%s\n", name);
1146                         } else if (cb->cb_dryrun) {
1147                                 (void) printf(gettext("would destroy %s\n"),
1148                                     name);
1149                         } else {
1150                                 (void) printf(gettext("will destroy %s\n"),
1151                                     name);
1152                         }
1153                 }
1154         } else if (cb->cb_firstsnap != NULL) {
1155                 /* end of this range */
1156                 uint64_t used = 0;
1157                 err = lzc_snaprange_space(cb->cb_firstsnap,
1158                     cb->cb_prevsnap, &used);
1159                 cb->cb_snapused += used;
1160                 free(cb->cb_firstsnap);
1161                 cb->cb_firstsnap = NULL;
1162                 free(cb->cb_prevsnap);
1163                 cb->cb_prevsnap = NULL;
1164         }
1165         zfs_close(zhp);
1166         return (err);
1167 }
1168
1169 static int
1170 destroy_print_snapshots(zfs_handle_t *fs_zhp, destroy_cbdata_t *cb)
1171 {
1172         int err = 0;
1173         assert(cb->cb_firstsnap == NULL);
1174         assert(cb->cb_prevsnap == NULL);
1175         err = zfs_iter_snapshots_sorted(fs_zhp, destroy_print_cb, cb);
1176         if (cb->cb_firstsnap != NULL) {
1177                 uint64_t used = 0;
1178                 if (err == 0) {
1179                         err = lzc_snaprange_space(cb->cb_firstsnap,
1180                             cb->cb_prevsnap, &used);
1181                 }
1182                 cb->cb_snapused += used;
1183                 free(cb->cb_firstsnap);
1184                 cb->cb_firstsnap = NULL;
1185                 free(cb->cb_prevsnap);
1186                 cb->cb_prevsnap = NULL;
1187         }
1188         return (err);
1189 }
1190
1191 static int
1192 snapshot_to_nvl_cb(zfs_handle_t *zhp, void *arg)
1193 {
1194         destroy_cbdata_t *cb = arg;
1195         int err = 0;
1196
1197         /* Check for clones. */
1198         if (!cb->cb_doclones && !cb->cb_defer_destroy) {
1199                 cb->cb_target = zhp;
1200                 cb->cb_first = B_TRUE;
1201                 err = zfs_iter_dependents(zhp, B_TRUE,
1202                     destroy_check_dependent, cb);
1203         }
1204
1205         if (err == 0) {
1206                 if (nvlist_add_boolean(cb->cb_nvl, zfs_get_name(zhp)))
1207                         nomem();
1208         }
1209         zfs_close(zhp);
1210         return (err);
1211 }
1212
1213 static int
1214 gather_snapshots(zfs_handle_t *zhp, void *arg)
1215 {
1216         destroy_cbdata_t *cb = arg;
1217         int err = 0;
1218
1219         err = zfs_iter_snapspec(zhp, cb->cb_snapspec, snapshot_to_nvl_cb, cb);
1220         if (err == ENOENT)
1221                 err = 0;
1222         if (err != 0)
1223                 goto out;
1224
1225         if (cb->cb_verbose) {
1226                 err = destroy_print_snapshots(zhp, cb);
1227                 if (err != 0)
1228                         goto out;
1229         }
1230
1231         if (cb->cb_recurse)
1232                 err = zfs_iter_filesystems(zhp, gather_snapshots, cb);
1233
1234 out:
1235         zfs_close(zhp);
1236         return (err);
1237 }
1238
1239 static int
1240 destroy_clones(destroy_cbdata_t *cb)
1241 {
1242         nvpair_t *pair;
1243         for (pair = nvlist_next_nvpair(cb->cb_nvl, NULL);
1244             pair != NULL;
1245             pair = nvlist_next_nvpair(cb->cb_nvl, pair)) {
1246                 zfs_handle_t *zhp = zfs_open(g_zfs, nvpair_name(pair),
1247                     ZFS_TYPE_SNAPSHOT);
1248                 if (zhp != NULL) {
1249                         boolean_t defer = cb->cb_defer_destroy;
1250                         int err = 0;
1251
1252                         /*
1253                          * We can't defer destroy non-snapshots, so set it to
1254                          * false while destroying the clones.
1255                          */
1256                         cb->cb_defer_destroy = B_FALSE;
1257                         err = zfs_iter_dependents(zhp, B_FALSE,
1258                             destroy_callback, cb);
1259                         cb->cb_defer_destroy = defer;
1260                         zfs_close(zhp);
1261                         if (err != 0)
1262                                 return (err);
1263                 }
1264         }
1265         return (0);
1266 }
1267
1268 static int
1269 zfs_do_destroy(int argc, char **argv)
1270 {
1271         destroy_cbdata_t cb = { 0 };
1272         int rv = 0;
1273         int err = 0;
1274         int c;
1275         zfs_handle_t *zhp = NULL;
1276         char *at, *pound;
1277         zfs_type_t type = ZFS_TYPE_DATASET;
1278
1279         /* check options */
1280         while ((c = getopt(argc, argv, "vpndfrR")) != -1) {
1281                 switch (c) {
1282                 case 'v':
1283                         cb.cb_verbose = B_TRUE;
1284                         break;
1285                 case 'p':
1286                         cb.cb_verbose = B_TRUE;
1287                         cb.cb_parsable = B_TRUE;
1288                         break;
1289                 case 'n':
1290                         cb.cb_dryrun = B_TRUE;
1291                         break;
1292                 case 'd':
1293                         cb.cb_defer_destroy = B_TRUE;
1294                         type = ZFS_TYPE_SNAPSHOT;
1295                         break;
1296                 case 'f':
1297                         cb.cb_force = B_TRUE;
1298                         break;
1299                 case 'r':
1300                         cb.cb_recurse = B_TRUE;
1301                         break;
1302                 case 'R':
1303                         cb.cb_recurse = B_TRUE;
1304                         cb.cb_doclones = B_TRUE;
1305                         break;
1306                 case '?':
1307                 default:
1308                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1309                             optopt);
1310                         usage(B_FALSE);
1311                 }
1312         }
1313
1314         argc -= optind;
1315         argv += optind;
1316
1317         /* check number of arguments */
1318         if (argc == 0) {
1319                 (void) fprintf(stderr, gettext("missing dataset argument\n"));
1320                 usage(B_FALSE);
1321         }
1322         if (argc > 1) {
1323                 (void) fprintf(stderr, gettext("too many arguments\n"));
1324                 usage(B_FALSE);
1325         }
1326
1327         at = strchr(argv[0], '@');
1328         pound = strchr(argv[0], '#');
1329         if (at != NULL) {
1330
1331                 /* Build the list of snaps to destroy in cb_nvl. */
1332                 cb.cb_nvl = fnvlist_alloc();
1333
1334                 *at = '\0';
1335                 zhp = zfs_open(g_zfs, argv[0],
1336                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
1337                 if (zhp == NULL)
1338                         return (1);
1339
1340                 cb.cb_snapspec = at + 1;
1341                 if (gather_snapshots(zfs_handle_dup(zhp), &cb) != 0 ||
1342                     cb.cb_error) {
1343                         rv = 1;
1344                         goto out;
1345                 }
1346
1347                 if (nvlist_empty(cb.cb_nvl)) {
1348                         (void) fprintf(stderr, gettext("could not find any "
1349                             "snapshots to destroy; check snapshot names.\n"));
1350                         rv = 1;
1351                         goto out;
1352                 }
1353
1354                 if (cb.cb_verbose) {
1355                         char buf[16];
1356                         zfs_nicenum(cb.cb_snapused, buf, sizeof (buf));
1357                         if (cb.cb_parsable) {
1358                                 (void) printf("reclaim\t%llu\n",
1359                                     cb.cb_snapused);
1360                         } else if (cb.cb_dryrun) {
1361                                 (void) printf(gettext("would reclaim %s\n"),
1362                                     buf);
1363                         } else {
1364                                 (void) printf(gettext("will reclaim %s\n"),
1365                                     buf);
1366                         }
1367                 }
1368
1369                 if (!cb.cb_dryrun) {
1370                         if (cb.cb_doclones) {
1371                                 cb.cb_batchedsnaps = fnvlist_alloc();
1372                                 err = destroy_clones(&cb);
1373                                 if (err == 0) {
1374                                         err = zfs_destroy_snaps_nvl(g_zfs,
1375                                             cb.cb_batchedsnaps, B_FALSE);
1376                                 }
1377                                 if (err != 0) {
1378                                         rv = 1;
1379                                         goto out;
1380                                 }
1381                         }
1382                         if (err == 0) {
1383                                 err = zfs_destroy_snaps_nvl(g_zfs, cb.cb_nvl,
1384                                     cb.cb_defer_destroy);
1385                         }
1386                 }
1387
1388                 if (err != 0)
1389                         rv = 1;
1390         } else if (pound != NULL) {
1391                 int err;
1392                 nvlist_t *nvl;
1393
1394                 if (cb.cb_dryrun) {
1395                         (void) fprintf(stderr,
1396                             "dryrun is not supported with bookmark\n");
1397                         return (-1);
1398                 }
1399
1400                 if (cb.cb_defer_destroy) {
1401                         (void) fprintf(stderr,
1402                             "defer destroy is not supported with bookmark\n");
1403                         return (-1);
1404                 }
1405
1406                 if (cb.cb_recurse) {
1407                         (void) fprintf(stderr,
1408                             "recursive is not supported with bookmark\n");
1409                         return (-1);
1410                 }
1411
1412                 if (!zfs_bookmark_exists(argv[0])) {
1413                         (void) fprintf(stderr, gettext("bookmark '%s' "
1414                             "does not exist.\n"), argv[0]);
1415                         return (1);
1416                 }
1417
1418                 nvl = fnvlist_alloc();
1419                 fnvlist_add_boolean(nvl, argv[0]);
1420
1421                 err = lzc_destroy_bookmarks(nvl, NULL);
1422                 if (err != 0) {
1423                         (void) zfs_standard_error(g_zfs, err,
1424                             "cannot destroy bookmark");
1425                 }
1426
1427                 nvlist_free(cb.cb_nvl);
1428
1429                 return (err);
1430         } else {
1431                 /* Open the given dataset */
1432                 if ((zhp = zfs_open(g_zfs, argv[0], type)) == NULL)
1433                         return (1);
1434
1435                 cb.cb_target = zhp;
1436
1437                 /*
1438                  * Perform an explicit check for pools before going any further.
1439                  */
1440                 if (!cb.cb_recurse && strchr(zfs_get_name(zhp), '/') == NULL &&
1441                     zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
1442                         (void) fprintf(stderr, gettext("cannot destroy '%s': "
1443                             "operation does not apply to pools\n"),
1444                             zfs_get_name(zhp));
1445                         (void) fprintf(stderr, gettext("use 'zfs destroy -r "
1446                             "%s' to destroy all datasets in the pool\n"),
1447                             zfs_get_name(zhp));
1448                         (void) fprintf(stderr, gettext("use 'zpool destroy %s' "
1449                             "to destroy the pool itself\n"), zfs_get_name(zhp));
1450                         rv = 1;
1451                         goto out;
1452                 }
1453
1454                 /*
1455                  * Check for any dependents and/or clones.
1456                  */
1457                 cb.cb_first = B_TRUE;
1458                 if (!cb.cb_doclones &&
1459                     zfs_iter_dependents(zhp, B_TRUE, destroy_check_dependent,
1460                     &cb) != 0) {
1461                         rv = 1;
1462                         goto out;
1463                 }
1464
1465                 if (cb.cb_error) {
1466                         rv = 1;
1467                         goto out;
1468                 }
1469
1470                 cb.cb_batchedsnaps = fnvlist_alloc();
1471                 if (zfs_iter_dependents(zhp, B_FALSE, destroy_callback,
1472                     &cb) != 0) {
1473                         rv = 1;
1474                         goto out;
1475                 }
1476
1477                 /*
1478                  * Do the real thing.  The callback will close the
1479                  * handle regardless of whether it succeeds or not.
1480                  */
1481                 err = destroy_callback(zhp, &cb);
1482                 zhp = NULL;
1483                 if (err == 0) {
1484                         err = zfs_destroy_snaps_nvl(g_zfs,
1485                             cb.cb_batchedsnaps, cb.cb_defer_destroy);
1486                 }
1487                 if (err != 0)
1488                         rv = 1;
1489         }
1490
1491 out:
1492         fnvlist_free(cb.cb_batchedsnaps);
1493         fnvlist_free(cb.cb_nvl);
1494         if (zhp != NULL)
1495                 zfs_close(zhp);
1496         return (rv);
1497 }
1498
1499 static boolean_t
1500 is_recvd_column(zprop_get_cbdata_t *cbp)
1501 {
1502         int i;
1503         zfs_get_column_t col;
1504
1505         for (i = 0; i < ZFS_GET_NCOLS &&
1506             (col = cbp->cb_columns[i]) != GET_COL_NONE; i++)
1507                 if (col == GET_COL_RECVD)
1508                         return (B_TRUE);
1509         return (B_FALSE);
1510 }
1511
1512 /*
1513  * zfs get [-rHp] [-o all | field[,field]...] [-s source[,source]...]
1514  *      < all | property[,property]... > < fs | snap | vol > ...
1515  *
1516  *      -r      recurse over any child datasets
1517  *      -H      scripted mode.  Headers are stripped, and fields are separated
1518  *              by tabs instead of spaces.
1519  *      -o      Set of fields to display.  One of "name,property,value,
1520  *              received,source". Default is "name,property,value,source".
1521  *              "all" is an alias for all five.
1522  *      -s      Set of sources to allow.  One of
1523  *              "local,default,inherited,received,temporary,none".  Default is
1524  *              all six.
1525  *      -p      Display values in parsable (literal) format.
1526  *
1527  *  Prints properties for the given datasets.  The user can control which
1528  *  columns to display as well as which property types to allow.
1529  */
1530
1531 /*
1532  * Invoked to display the properties for a single dataset.
1533  */
1534 static int
1535 get_callback(zfs_handle_t *zhp, void *data)
1536 {
1537         char buf[ZFS_MAXPROPLEN];
1538         char rbuf[ZFS_MAXPROPLEN];
1539         zprop_source_t sourcetype;
1540         char source[ZFS_MAX_DATASET_NAME_LEN];
1541         zprop_get_cbdata_t *cbp = data;
1542         nvlist_t *user_props = zfs_get_user_props(zhp);
1543         zprop_list_t *pl = cbp->cb_proplist;
1544         nvlist_t *propval;
1545         char *strval;
1546         char *sourceval;
1547         boolean_t received = is_recvd_column(cbp);
1548
1549         for (; pl != NULL; pl = pl->pl_next) {
1550                 char *recvdval = NULL;
1551                 /*
1552                  * Skip the special fake placeholder.  This will also skip over
1553                  * the name property when 'all' is specified.
1554                  */
1555                 if (pl->pl_prop == ZFS_PROP_NAME &&
1556                     pl == cbp->cb_proplist)
1557                         continue;
1558
1559                 if (pl->pl_prop != ZPROP_INVAL) {
1560                         if (zfs_prop_get(zhp, pl->pl_prop, buf,
1561                             sizeof (buf), &sourcetype, source,
1562                             sizeof (source),
1563                             cbp->cb_literal) != 0) {
1564                                 if (pl->pl_all)
1565                                         continue;
1566                                 if (!zfs_prop_valid_for_type(pl->pl_prop,
1567                                     ZFS_TYPE_DATASET)) {
1568                                         (void) fprintf(stderr,
1569                                             gettext("No such property '%s'\n"),
1570                                             zfs_prop_to_name(pl->pl_prop));
1571                                         continue;
1572                                 }
1573                                 sourcetype = ZPROP_SRC_NONE;
1574                                 (void) strlcpy(buf, "-", sizeof (buf));
1575                         }
1576
1577                         if (received && (zfs_prop_get_recvd(zhp,
1578                             zfs_prop_to_name(pl->pl_prop), rbuf, sizeof (rbuf),
1579                             cbp->cb_literal) == 0))
1580                                 recvdval = rbuf;
1581
1582                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1583                             zfs_prop_to_name(pl->pl_prop),
1584                             buf, sourcetype, source, recvdval);
1585                 } else if (zfs_prop_userquota(pl->pl_user_prop)) {
1586                         sourcetype = ZPROP_SRC_LOCAL;
1587
1588                         if (zfs_prop_get_userquota(zhp, pl->pl_user_prop,
1589                             buf, sizeof (buf), cbp->cb_literal) != 0) {
1590                                 sourcetype = ZPROP_SRC_NONE;
1591                                 (void) strlcpy(buf, "-", sizeof (buf));
1592                         }
1593
1594                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1595                             pl->pl_user_prop, buf, sourcetype, source, NULL);
1596                 } else if (zfs_prop_written(pl->pl_user_prop)) {
1597                         sourcetype = ZPROP_SRC_LOCAL;
1598
1599                         if (zfs_prop_get_written(zhp, pl->pl_user_prop,
1600                             buf, sizeof (buf), cbp->cb_literal) != 0) {
1601                                 sourcetype = ZPROP_SRC_NONE;
1602                                 (void) strlcpy(buf, "-", sizeof (buf));
1603                         }
1604
1605                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1606                             pl->pl_user_prop, buf, sourcetype, source, NULL);
1607                 } else {
1608                         if (nvlist_lookup_nvlist(user_props,
1609                             pl->pl_user_prop, &propval) != 0) {
1610                                 if (pl->pl_all)
1611                                         continue;
1612                                 sourcetype = ZPROP_SRC_NONE;
1613                                 strval = "-";
1614                         } else {
1615                                 verify(nvlist_lookup_string(propval,
1616                                     ZPROP_VALUE, &strval) == 0);
1617                                 verify(nvlist_lookup_string(propval,
1618                                     ZPROP_SOURCE, &sourceval) == 0);
1619
1620                                 if (strcmp(sourceval,
1621                                     zfs_get_name(zhp)) == 0) {
1622                                         sourcetype = ZPROP_SRC_LOCAL;
1623                                 } else if (strcmp(sourceval,
1624                                     ZPROP_SOURCE_VAL_RECVD) == 0) {
1625                                         sourcetype = ZPROP_SRC_RECEIVED;
1626                                 } else {
1627                                         sourcetype = ZPROP_SRC_INHERITED;
1628                                         (void) strlcpy(source,
1629                                             sourceval, sizeof (source));
1630                                 }
1631                         }
1632
1633                         if (received && (zfs_prop_get_recvd(zhp,
1634                             pl->pl_user_prop, rbuf, sizeof (rbuf),
1635                             cbp->cb_literal) == 0))
1636                                 recvdval = rbuf;
1637
1638                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1639                             pl->pl_user_prop, strval, sourcetype,
1640                             source, recvdval);
1641                 }
1642         }
1643
1644         return (0);
1645 }
1646
1647 static int
1648 zfs_do_get(int argc, char **argv)
1649 {
1650         zprop_get_cbdata_t cb = { 0 };
1651         int i, c, flags = ZFS_ITER_ARGS_CAN_BE_PATHS;
1652         int types = ZFS_TYPE_DATASET | ZFS_TYPE_BOOKMARK;
1653         char *value, *fields;
1654         int ret = 0;
1655         int limit = 0;
1656         zprop_list_t fake_name = { 0 };
1657
1658         /*
1659          * Set up default columns and sources.
1660          */
1661         cb.cb_sources = ZPROP_SRC_ALL;
1662         cb.cb_columns[0] = GET_COL_NAME;
1663         cb.cb_columns[1] = GET_COL_PROPERTY;
1664         cb.cb_columns[2] = GET_COL_VALUE;
1665         cb.cb_columns[3] = GET_COL_SOURCE;
1666         cb.cb_type = ZFS_TYPE_DATASET;
1667
1668         /* check options */
1669         while ((c = getopt(argc, argv, ":d:o:s:rt:Hp")) != -1) {
1670                 switch (c) {
1671                 case 'p':
1672                         cb.cb_literal = B_TRUE;
1673                         break;
1674                 case 'd':
1675                         limit = parse_depth(optarg, &flags);
1676                         break;
1677                 case 'r':
1678                         flags |= ZFS_ITER_RECURSE;
1679                         break;
1680                 case 'H':
1681                         cb.cb_scripted = B_TRUE;
1682                         break;
1683                 case ':':
1684                         (void) fprintf(stderr, gettext("missing argument for "
1685                             "'%c' option\n"), optopt);
1686                         usage(B_FALSE);
1687                         break;
1688                 case 'o':
1689                         /*
1690                          * Process the set of columns to display.  We zero out
1691                          * the structure to give us a blank slate.
1692                          */
1693                         bzero(&cb.cb_columns, sizeof (cb.cb_columns));
1694                         i = 0;
1695                         while (*optarg != '\0') {
1696                                 static char *col_subopts[] =
1697                                     { "name", "property", "value", "received",
1698                                     "source", "all", NULL };
1699
1700                                 if (i == ZFS_GET_NCOLS) {
1701                                         (void) fprintf(stderr, gettext("too "
1702                                             "many fields given to -o "
1703                                             "option\n"));
1704                                         usage(B_FALSE);
1705                                 }
1706
1707                                 switch (getsubopt(&optarg, col_subopts,
1708                                     &value)) {
1709                                 case 0:
1710                                         cb.cb_columns[i++] = GET_COL_NAME;
1711                                         break;
1712                                 case 1:
1713                                         cb.cb_columns[i++] = GET_COL_PROPERTY;
1714                                         break;
1715                                 case 2:
1716                                         cb.cb_columns[i++] = GET_COL_VALUE;
1717                                         break;
1718                                 case 3:
1719                                         cb.cb_columns[i++] = GET_COL_RECVD;
1720                                         flags |= ZFS_ITER_RECVD_PROPS;
1721                                         break;
1722                                 case 4:
1723                                         cb.cb_columns[i++] = GET_COL_SOURCE;
1724                                         break;
1725                                 case 5:
1726                                         if (i > 0) {
1727                                                 (void) fprintf(stderr,
1728                                                     gettext("\"all\" conflicts "
1729                                                     "with specific fields "
1730                                                     "given to -o option\n"));
1731                                                 usage(B_FALSE);
1732                                         }
1733                                         cb.cb_columns[0] = GET_COL_NAME;
1734                                         cb.cb_columns[1] = GET_COL_PROPERTY;
1735                                         cb.cb_columns[2] = GET_COL_VALUE;
1736                                         cb.cb_columns[3] = GET_COL_RECVD;
1737                                         cb.cb_columns[4] = GET_COL_SOURCE;
1738                                         flags |= ZFS_ITER_RECVD_PROPS;
1739                                         i = ZFS_GET_NCOLS;
1740                                         break;
1741                                 default:
1742                                         (void) fprintf(stderr,
1743                                             gettext("invalid column name "
1744                                             "'%s'\n"), suboptarg);
1745                                         usage(B_FALSE);
1746                                 }
1747                         }
1748                         break;
1749
1750                 case 's':
1751                         cb.cb_sources = 0;
1752                         while (*optarg != '\0') {
1753                                 static char *source_subopts[] = {
1754                                         "local", "default", "inherited",
1755                                         "received", "temporary", "none",
1756                                         NULL };
1757
1758                                 switch (getsubopt(&optarg, source_subopts,
1759                                     &value)) {
1760                                 case 0:
1761                                         cb.cb_sources |= ZPROP_SRC_LOCAL;
1762                                         break;
1763                                 case 1:
1764                                         cb.cb_sources |= ZPROP_SRC_DEFAULT;
1765                                         break;
1766                                 case 2:
1767                                         cb.cb_sources |= ZPROP_SRC_INHERITED;
1768                                         break;
1769                                 case 3:
1770                                         cb.cb_sources |= ZPROP_SRC_RECEIVED;
1771                                         break;
1772                                 case 4:
1773                                         cb.cb_sources |= ZPROP_SRC_TEMPORARY;
1774                                         break;
1775                                 case 5:
1776                                         cb.cb_sources |= ZPROP_SRC_NONE;
1777                                         break;
1778                                 default:
1779                                         (void) fprintf(stderr,
1780                                             gettext("invalid source "
1781                                             "'%s'\n"), suboptarg);
1782                                         usage(B_FALSE);
1783                                 }
1784                         }
1785                         break;
1786
1787                 case 't':
1788                         types = 0;
1789                         flags &= ~ZFS_ITER_PROP_LISTSNAPS;
1790                         while (*optarg != '\0') {
1791                                 static char *type_subopts[] = { "filesystem",
1792                                     "volume", "snapshot", "bookmark",
1793                                     "all", NULL };
1794
1795                                 switch (getsubopt(&optarg, type_subopts,
1796                                     &value)) {
1797                                 case 0:
1798                                         types |= ZFS_TYPE_FILESYSTEM;
1799                                         break;
1800                                 case 1:
1801                                         types |= ZFS_TYPE_VOLUME;
1802                                         break;
1803                                 case 2:
1804                                         types |= ZFS_TYPE_SNAPSHOT;
1805                                         break;
1806                                 case 3:
1807                                         types |= ZFS_TYPE_BOOKMARK;
1808                                         break;
1809                                 case 4:
1810                                         types = ZFS_TYPE_DATASET |
1811                                             ZFS_TYPE_BOOKMARK;
1812                                         break;
1813
1814                                 default:
1815                                         (void) fprintf(stderr,
1816                                             gettext("invalid type '%s'\n"),
1817                                             suboptarg);
1818                                         usage(B_FALSE);
1819                                 }
1820                         }
1821                         break;
1822
1823                 case '?':
1824                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1825                             optopt);
1826                         usage(B_FALSE);
1827                 }
1828         }
1829
1830         argc -= optind;
1831         argv += optind;
1832
1833         if (argc < 1) {
1834                 (void) fprintf(stderr, gettext("missing property "
1835                     "argument\n"));
1836                 usage(B_FALSE);
1837         }
1838
1839         fields = argv[0];
1840
1841         if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
1842             != 0)
1843                 usage(B_FALSE);
1844
1845         argc--;
1846         argv++;
1847
1848         /*
1849          * As part of zfs_expand_proplist(), we keep track of the maximum column
1850          * width for each property.  For the 'NAME' (and 'SOURCE') columns, we
1851          * need to know the maximum name length.  However, the user likely did
1852          * not specify 'name' as one of the properties to fetch, so we need to
1853          * make sure we always include at least this property for
1854          * print_get_headers() to work properly.
1855          */
1856         if (cb.cb_proplist != NULL) {
1857                 fake_name.pl_prop = ZFS_PROP_NAME;
1858                 fake_name.pl_width = strlen(gettext("NAME"));
1859                 fake_name.pl_next = cb.cb_proplist;
1860                 cb.cb_proplist = &fake_name;
1861         }
1862
1863         cb.cb_first = B_TRUE;
1864
1865         /* run for each object */
1866         ret = zfs_for_each(argc, argv, flags, types, NULL,
1867             &cb.cb_proplist, limit, get_callback, &cb);
1868
1869         if (cb.cb_proplist == &fake_name)
1870                 zprop_free_list(fake_name.pl_next);
1871         else
1872                 zprop_free_list(cb.cb_proplist);
1873
1874         return (ret);
1875 }
1876
1877 /*
1878  * inherit [-rS] <property> <fs|vol> ...
1879  *
1880  *      -r      Recurse over all children
1881  *      -S      Revert to received value, if any
1882  *
1883  * For each dataset specified on the command line, inherit the given property
1884  * from its parent.  Inheriting a property at the pool level will cause it to
1885  * use the default value.  The '-r' flag will recurse over all children, and is
1886  * useful for setting a property on a hierarchy-wide basis, regardless of any
1887  * local modifications for each dataset.
1888  */
1889
1890 typedef struct inherit_cbdata {
1891         const char *cb_propname;
1892         boolean_t cb_received;
1893 } inherit_cbdata_t;
1894
1895 static int
1896 inherit_recurse_cb(zfs_handle_t *zhp, void *data)
1897 {
1898         inherit_cbdata_t *cb = data;
1899         zfs_prop_t prop = zfs_name_to_prop(cb->cb_propname);
1900
1901         /*
1902          * If we're doing it recursively, then ignore properties that
1903          * are not valid for this type of dataset.
1904          */
1905         if (prop != ZPROP_INVAL &&
1906             !zfs_prop_valid_for_type(prop, zfs_get_type(zhp)))
1907                 return (0);
1908
1909         return (zfs_prop_inherit(zhp, cb->cb_propname, cb->cb_received) != 0);
1910 }
1911
1912 static int
1913 inherit_cb(zfs_handle_t *zhp, void *data)
1914 {
1915         inherit_cbdata_t *cb = data;
1916
1917         return (zfs_prop_inherit(zhp, cb->cb_propname, cb->cb_received) != 0);
1918 }
1919
1920 static int
1921 zfs_do_inherit(int argc, char **argv)
1922 {
1923         int c;
1924         zfs_prop_t prop;
1925         inherit_cbdata_t cb = { 0 };
1926         char *propname;
1927         int ret = 0;
1928         int flags = 0;
1929         boolean_t received = B_FALSE;
1930
1931         /* check options */
1932         while ((c = getopt(argc, argv, "rS")) != -1) {
1933                 switch (c) {
1934                 case 'r':
1935                         flags |= ZFS_ITER_RECURSE;
1936                         break;
1937                 case 'S':
1938                         received = B_TRUE;
1939                         break;
1940                 case '?':
1941                 default:
1942                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1943                             optopt);
1944                         usage(B_FALSE);
1945                 }
1946         }
1947
1948         argc -= optind;
1949         argv += optind;
1950
1951         /* check number of arguments */
1952         if (argc < 1) {
1953                 (void) fprintf(stderr, gettext("missing property argument\n"));
1954                 usage(B_FALSE);
1955         }
1956         if (argc < 2) {
1957                 (void) fprintf(stderr, gettext("missing dataset argument\n"));
1958                 usage(B_FALSE);
1959         }
1960
1961         propname = argv[0];
1962         argc--;
1963         argv++;
1964
1965         if ((prop = zfs_name_to_prop(propname)) != ZPROP_INVAL) {
1966                 if (zfs_prop_readonly(prop)) {
1967                         (void) fprintf(stderr, gettext(
1968                             "%s property is read-only\n"),
1969                             propname);
1970                         return (1);
1971                 }
1972                 if (!zfs_prop_inheritable(prop) && !received) {
1973                         (void) fprintf(stderr, gettext("'%s' property cannot "
1974                             "be inherited\n"), propname);
1975                         if (prop == ZFS_PROP_QUOTA ||
1976                             prop == ZFS_PROP_RESERVATION ||
1977                             prop == ZFS_PROP_REFQUOTA ||
1978                             prop == ZFS_PROP_REFRESERVATION) {
1979                                 (void) fprintf(stderr, gettext("use 'zfs set "
1980                                     "%s=none' to clear\n"), propname);
1981                                 (void) fprintf(stderr, gettext("use 'zfs "
1982                                     "inherit -S %s' to revert to received "
1983                                     "value\n"), propname);
1984                         }
1985                         return (1);
1986                 }
1987                 if (received && (prop == ZFS_PROP_VOLSIZE ||
1988                     prop == ZFS_PROP_VERSION)) {
1989                         (void) fprintf(stderr, gettext("'%s' property cannot "
1990                             "be reverted to a received value\n"), propname);
1991                         return (1);
1992                 }
1993         } else if (!zfs_prop_user(propname)) {
1994                 (void) fprintf(stderr, gettext("invalid property '%s'\n"),
1995                     propname);
1996                 usage(B_FALSE);
1997         }
1998
1999         cb.cb_propname = propname;
2000         cb.cb_received = received;
2001
2002         if (flags & ZFS_ITER_RECURSE) {
2003                 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
2004                     NULL, NULL, 0, inherit_recurse_cb, &cb);
2005         } else {
2006                 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
2007                     NULL, NULL, 0, inherit_cb, &cb);
2008         }
2009
2010         return (ret);
2011 }
2012
2013 typedef struct upgrade_cbdata {
2014         uint64_t cb_numupgraded;
2015         uint64_t cb_numsamegraded;
2016         uint64_t cb_numfailed;
2017         uint64_t cb_version;
2018         boolean_t cb_newer;
2019         boolean_t cb_foundone;
2020         char cb_lastfs[ZFS_MAX_DATASET_NAME_LEN];
2021 } upgrade_cbdata_t;
2022
2023 static int
2024 same_pool(zfs_handle_t *zhp, const char *name)
2025 {
2026         int len1 = strcspn(name, "/@");
2027         const char *zhname = zfs_get_name(zhp);
2028         int len2 = strcspn(zhname, "/@");
2029
2030         if (len1 != len2)
2031                 return (B_FALSE);
2032         return (strncmp(name, zhname, len1) == 0);
2033 }
2034
2035 static int
2036 upgrade_list_callback(zfs_handle_t *zhp, void *data)
2037 {
2038         upgrade_cbdata_t *cb = data;
2039         int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
2040
2041         /* list if it's old/new */
2042         if ((!cb->cb_newer && version < ZPL_VERSION) ||
2043             (cb->cb_newer && version > ZPL_VERSION)) {
2044                 char *str;
2045                 if (cb->cb_newer) {
2046                         str = gettext("The following filesystems are "
2047                             "formatted using a newer software version and\n"
2048                             "cannot be accessed on the current system.\n\n");
2049                 } else {
2050                         str = gettext("The following filesystems are "
2051                             "out of date, and can be upgraded.  After being\n"
2052                             "upgraded, these filesystems (and any 'zfs send' "
2053                             "streams generated from\n"
2054                             "subsequent snapshots) will no longer be "
2055                             "accessible by older software versions.\n\n");
2056                 }
2057
2058                 if (!cb->cb_foundone) {
2059                         (void) puts(str);
2060                         (void) printf(gettext("VER  FILESYSTEM\n"));
2061                         (void) printf(gettext("---  ------------\n"));
2062                         cb->cb_foundone = B_TRUE;
2063                 }
2064
2065                 (void) printf("%2u   %s\n", version, zfs_get_name(zhp));
2066         }
2067
2068         return (0);
2069 }
2070
2071 static int
2072 upgrade_set_callback(zfs_handle_t *zhp, void *data)
2073 {
2074         upgrade_cbdata_t *cb = data;
2075         int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
2076         int needed_spa_version;
2077         int spa_version;
2078
2079         if (zfs_spa_version(zhp, &spa_version) < 0)
2080                 return (-1);
2081
2082         needed_spa_version = zfs_spa_version_map(cb->cb_version);
2083
2084         if (needed_spa_version < 0)
2085                 return (-1);
2086
2087         if (spa_version < needed_spa_version) {
2088                 /* can't upgrade */
2089                 (void) printf(gettext("%s: can not be "
2090                     "upgraded; the pool version needs to first "
2091                     "be upgraded\nto version %d\n\n"),
2092                     zfs_get_name(zhp), needed_spa_version);
2093                 cb->cb_numfailed++;
2094                 return (0);
2095         }
2096
2097         /* upgrade */
2098         if (version < cb->cb_version) {
2099                 char verstr[16];
2100                 (void) snprintf(verstr, sizeof (verstr),
2101                     "%llu", cb->cb_version);
2102                 if (cb->cb_lastfs[0] && !same_pool(zhp, cb->cb_lastfs)) {
2103                         /*
2104                          * If they did "zfs upgrade -a", then we could
2105                          * be doing ioctls to different pools.  We need
2106                          * to log this history once to each pool, and bypass
2107                          * the normal history logging that happens in main().
2108                          */
2109                         (void) zpool_log_history(g_zfs, history_str);
2110                         log_history = B_FALSE;
2111                 }
2112                 if (zfs_prop_set(zhp, "version", verstr) == 0)
2113                         cb->cb_numupgraded++;
2114                 else
2115                         cb->cb_numfailed++;
2116                 (void) strcpy(cb->cb_lastfs, zfs_get_name(zhp));
2117         } else if (version > cb->cb_version) {
2118                 /* can't downgrade */
2119                 (void) printf(gettext("%s: can not be downgraded; "
2120                     "it is already at version %u\n"),
2121                     zfs_get_name(zhp), version);
2122                 cb->cb_numfailed++;
2123         } else {
2124                 cb->cb_numsamegraded++;
2125         }
2126         return (0);
2127 }
2128
2129 /*
2130  * zfs upgrade
2131  * zfs upgrade -v
2132  * zfs upgrade [-r] [-V <version>] <-a | filesystem>
2133  */
2134 static int
2135 zfs_do_upgrade(int argc, char **argv)
2136 {
2137         boolean_t all = B_FALSE;
2138         boolean_t showversions = B_FALSE;
2139         int ret = 0;
2140         upgrade_cbdata_t cb = { 0 };
2141         int c;
2142         int flags = ZFS_ITER_ARGS_CAN_BE_PATHS;
2143
2144         /* check options */
2145         while ((c = getopt(argc, argv, "rvV:a")) != -1) {
2146                 switch (c) {
2147                 case 'r':
2148                         flags |= ZFS_ITER_RECURSE;
2149                         break;
2150                 case 'v':
2151                         showversions = B_TRUE;
2152                         break;
2153                 case 'V':
2154                         if (zfs_prop_string_to_index(ZFS_PROP_VERSION,
2155                             optarg, &cb.cb_version) != 0) {
2156                                 (void) fprintf(stderr,
2157                                     gettext("invalid version %s\n"), optarg);
2158                                 usage(B_FALSE);
2159                         }
2160                         break;
2161                 case 'a':
2162                         all = B_TRUE;
2163                         break;
2164                 case '?':
2165                 default:
2166                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2167                             optopt);
2168                         usage(B_FALSE);
2169                 }
2170         }
2171
2172         argc -= optind;
2173         argv += optind;
2174
2175         if ((!all && !argc) && ((flags & ZFS_ITER_RECURSE) | cb.cb_version))
2176                 usage(B_FALSE);
2177         if (showversions && (flags & ZFS_ITER_RECURSE || all ||
2178             cb.cb_version || argc))
2179                 usage(B_FALSE);
2180         if ((all || argc) && (showversions))
2181                 usage(B_FALSE);
2182         if (all && argc)
2183                 usage(B_FALSE);
2184
2185         if (showversions) {
2186                 /* Show info on available versions. */
2187                 (void) printf(gettext("The following filesystem versions are "
2188                     "supported:\n\n"));
2189                 (void) printf(gettext("VER  DESCRIPTION\n"));
2190                 (void) printf("---  -----------------------------------------"
2191                     "---------------\n");
2192                 (void) printf(gettext(" 1   Initial ZFS filesystem version\n"));
2193                 (void) printf(gettext(" 2   Enhanced directory entries\n"));
2194                 (void) printf(gettext(" 3   Case insensitive and filesystem "
2195                     "user identifier (FUID)\n"));
2196                 (void) printf(gettext(" 4   userquota, groupquota "
2197                     "properties\n"));
2198                 (void) printf(gettext(" 5   System attributes\n"));
2199                 (void) printf(gettext("\nFor more information on a particular "
2200                     "version, including supported releases,\n"));
2201                 (void) printf("see the ZFS Administration Guide.\n\n");
2202                 ret = 0;
2203         } else if (argc || all) {
2204                 /* Upgrade filesystems */
2205                 if (cb.cb_version == 0)
2206                         cb.cb_version = ZPL_VERSION;
2207                 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_FILESYSTEM,
2208                     NULL, NULL, 0, upgrade_set_callback, &cb);
2209                 (void) printf(gettext("%llu filesystems upgraded\n"),
2210                     cb.cb_numupgraded);
2211                 if (cb.cb_numsamegraded) {
2212                         (void) printf(gettext("%llu filesystems already at "
2213                             "this version\n"),
2214                             cb.cb_numsamegraded);
2215                 }
2216                 if (cb.cb_numfailed != 0)
2217                         ret = 1;
2218         } else {
2219                 /* List old-version filesystems */
2220                 boolean_t found;
2221                 (void) printf(gettext("This system is currently running "
2222                     "ZFS filesystem version %llu.\n\n"), ZPL_VERSION);
2223
2224                 flags |= ZFS_ITER_RECURSE;
2225                 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
2226                     NULL, NULL, 0, upgrade_list_callback, &cb);
2227
2228                 found = cb.cb_foundone;
2229                 cb.cb_foundone = B_FALSE;
2230                 cb.cb_newer = B_TRUE;
2231
2232                 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
2233                     NULL, NULL, 0, upgrade_list_callback, &cb);
2234
2235                 if (!cb.cb_foundone && !found) {
2236                         (void) printf(gettext("All filesystems are "
2237                             "formatted with the current version.\n"));
2238                 }
2239         }
2240
2241         return (ret);
2242 }
2243
2244 /*
2245  * zfs userspace [-Hinp] [-o field[,...]] [-s field [-s field]...]
2246  *               [-S field [-S field]...] [-t type[,...]] filesystem | snapshot
2247  * zfs groupspace [-Hinp] [-o field[,...]] [-s field [-s field]...]
2248  *                [-S field [-S field]...] [-t type[,...]] filesystem | snapshot
2249  *
2250  *      -H      Scripted mode; elide headers and separate columns by tabs.
2251  *      -i      Translate SID to POSIX ID.
2252  *      -n      Print numeric ID instead of user/group name.
2253  *      -o      Control which fields to display.
2254  *      -p      Use exact (parsable) numeric output.
2255  *      -s      Specify sort columns, descending order.
2256  *      -S      Specify sort columns, ascending order.
2257  *      -t      Control which object types to display.
2258  *
2259  *      Displays space consumed by, and quotas on, each user in the specified
2260  *      filesystem or snapshot.
2261  */
2262
2263 /* us_field_types, us_field_hdr and us_field_names should be kept in sync */
2264 enum us_field_types {
2265         USFIELD_TYPE,
2266         USFIELD_NAME,
2267         USFIELD_USED,
2268         USFIELD_QUOTA
2269 };
2270 static char *us_field_hdr[] = { "TYPE", "NAME", "USED", "QUOTA" };
2271 static char *us_field_names[] = { "type", "name", "used", "quota" };
2272 #define USFIELD_LAST    (sizeof (us_field_names) / sizeof (char *))
2273
2274 #define USTYPE_PSX_GRP  (1 << 0)
2275 #define USTYPE_PSX_USR  (1 << 1)
2276 #define USTYPE_SMB_GRP  (1 << 2)
2277 #define USTYPE_SMB_USR  (1 << 3)
2278 #define USTYPE_ALL      \
2279         (USTYPE_PSX_GRP | USTYPE_PSX_USR | USTYPE_SMB_GRP | USTYPE_SMB_USR)
2280
2281 static int us_type_bits[] = {
2282         USTYPE_PSX_GRP,
2283         USTYPE_PSX_USR,
2284         USTYPE_SMB_GRP,
2285         USTYPE_SMB_USR,
2286         USTYPE_ALL
2287 };
2288 static char *us_type_names[] = { "posixgroup", "posixuser", "smbgroup",
2289         "smbuser", "all" };
2290
2291 typedef struct us_node {
2292         nvlist_t        *usn_nvl;
2293         uu_avl_node_t   usn_avlnode;
2294         uu_list_node_t  usn_listnode;
2295 } us_node_t;
2296
2297 typedef struct us_cbdata {
2298         nvlist_t        **cb_nvlp;
2299         uu_avl_pool_t   *cb_avl_pool;
2300         uu_avl_t        *cb_avl;
2301         boolean_t       cb_numname;
2302         boolean_t       cb_nicenum;
2303         boolean_t       cb_sid2posix;
2304         zfs_userquota_prop_t cb_prop;
2305         zfs_sort_column_t *cb_sortcol;
2306         size_t          cb_width[USFIELD_LAST];
2307 } us_cbdata_t;
2308
2309 static boolean_t us_populated = B_FALSE;
2310
2311 typedef struct {
2312         zfs_sort_column_t *si_sortcol;
2313         boolean_t       si_numname;
2314 } us_sort_info_t;
2315
2316 static int
2317 us_field_index(char *field)
2318 {
2319         int i;
2320
2321         for (i = 0; i < USFIELD_LAST; i++) {
2322                 if (strcmp(field, us_field_names[i]) == 0)
2323                         return (i);
2324         }
2325
2326         return (-1);
2327 }
2328
2329 static int
2330 us_compare(const void *larg, const void *rarg, void *unused)
2331 {
2332         const us_node_t *l = larg;
2333         const us_node_t *r = rarg;
2334         us_sort_info_t *si = (us_sort_info_t *)unused;
2335         zfs_sort_column_t *sortcol = si->si_sortcol;
2336         boolean_t numname = si->si_numname;
2337         nvlist_t *lnvl = l->usn_nvl;
2338         nvlist_t *rnvl = r->usn_nvl;
2339         int rc = 0;
2340         boolean_t lvb, rvb;
2341
2342         for (; sortcol != NULL; sortcol = sortcol->sc_next) {
2343                 char *lvstr = "";
2344                 char *rvstr = "";
2345                 uint32_t lv32 = 0;
2346                 uint32_t rv32 = 0;
2347                 uint64_t lv64 = 0;
2348                 uint64_t rv64 = 0;
2349                 zfs_prop_t prop = sortcol->sc_prop;
2350                 const char *propname = NULL;
2351                 boolean_t reverse = sortcol->sc_reverse;
2352
2353                 switch (prop) {
2354                 case ZFS_PROP_TYPE:
2355                         propname = "type";
2356                         (void) nvlist_lookup_uint32(lnvl, propname, &lv32);
2357                         (void) nvlist_lookup_uint32(rnvl, propname, &rv32);
2358                         if (rv32 != lv32)
2359                                 rc = (rv32 < lv32) ? 1 : -1;
2360                         break;
2361                 case ZFS_PROP_NAME:
2362                         propname = "name";
2363                         if (numname) {
2364 compare_nums:
2365                                 (void) nvlist_lookup_uint64(lnvl, propname,
2366                                     &lv64);
2367                                 (void) nvlist_lookup_uint64(rnvl, propname,
2368                                     &rv64);
2369                                 if (rv64 != lv64)
2370                                         rc = (rv64 < lv64) ? 1 : -1;
2371                         } else {
2372                                 if ((nvlist_lookup_string(lnvl, propname,
2373                                                 &lvstr) == ENOENT) ||
2374                                     (nvlist_lookup_string(rnvl, propname,
2375                                                 &rvstr) == ENOENT)) {
2376                                         goto compare_nums;
2377                                 }
2378                                 rc = strcmp(lvstr, rvstr);
2379                         }
2380                         break;
2381                 case ZFS_PROP_USED:
2382                 case ZFS_PROP_QUOTA:
2383                         if (!us_populated)
2384                                 break;
2385                         if (prop == ZFS_PROP_USED)
2386                                 propname = "used";
2387                         else
2388                                 propname = "quota";
2389                         (void) nvlist_lookup_uint64(lnvl, propname, &lv64);
2390                         (void) nvlist_lookup_uint64(rnvl, propname, &rv64);
2391                         if (rv64 != lv64)
2392                                 rc = (rv64 < lv64) ? 1 : -1;
2393                         break;
2394
2395                 default:
2396                         break;
2397                 }
2398
2399                 if (rc != 0) {
2400                         if (rc < 0)
2401                                 return (reverse ? 1 : -1);
2402                         else
2403                                 return (reverse ? -1 : 1);
2404                 }
2405         }
2406
2407         /*
2408          * If entries still seem to be the same, check if they are of the same
2409          * type (smbentity is added only if we are doing SID to POSIX ID
2410          * translation where we can have duplicate type/name combinations).
2411          */
2412         if (nvlist_lookup_boolean_value(lnvl, "smbentity", &lvb) == 0 &&
2413             nvlist_lookup_boolean_value(rnvl, "smbentity", &rvb) == 0 &&
2414             lvb != rvb)
2415                 return (lvb < rvb ? -1 : 1);
2416
2417         return (0);
2418 }
2419
2420 static inline const char *
2421 us_type2str(unsigned field_type)
2422 {
2423         switch (field_type) {
2424         case USTYPE_PSX_USR:
2425                 return ("POSIX User");
2426         case USTYPE_PSX_GRP:
2427                 return ("POSIX Group");
2428         case USTYPE_SMB_USR:
2429                 return ("SMB User");
2430         case USTYPE_SMB_GRP:
2431                 return ("SMB Group");
2432         default:
2433                 return ("Undefined");
2434         }
2435 }
2436
2437 static int
2438 userspace_cb(void *arg, const char *domain, uid_t rid, uint64_t space)
2439 {
2440         us_cbdata_t *cb = (us_cbdata_t *)arg;
2441         zfs_userquota_prop_t prop = cb->cb_prop;
2442         char *name = NULL;
2443         char *propname;
2444         char sizebuf[32];
2445         us_node_t *node;
2446         uu_avl_pool_t *avl_pool = cb->cb_avl_pool;
2447         uu_avl_t *avl = cb->cb_avl;
2448         uu_avl_index_t idx;
2449         nvlist_t *props;
2450         us_node_t *n;
2451         zfs_sort_column_t *sortcol = cb->cb_sortcol;
2452         unsigned type = 0;
2453         const char *typestr;
2454         size_t namelen;
2455         size_t typelen;
2456         size_t sizelen;
2457         int typeidx, nameidx, sizeidx;
2458         us_sort_info_t sortinfo = { sortcol, cb->cb_numname };
2459         boolean_t smbentity = B_FALSE;
2460
2461         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
2462                 nomem();
2463         node = safe_malloc(sizeof (us_node_t));
2464         uu_avl_node_init(node, &node->usn_avlnode, avl_pool);
2465         node->usn_nvl = props;
2466
2467         if (domain != NULL && domain[0] != '\0') {
2468                 /* SMB */
2469                 char sid[MAXNAMELEN + 32];
2470                 uid_t id;
2471 #ifdef illumos
2472                 int err;
2473                 int flag = IDMAP_REQ_FLG_USE_CACHE;
2474 #endif
2475
2476                 smbentity = B_TRUE;
2477
2478                 (void) snprintf(sid, sizeof (sid), "%s-%u", domain, rid);
2479
2480                 if (prop == ZFS_PROP_GROUPUSED || prop == ZFS_PROP_GROUPQUOTA) {
2481                         type = USTYPE_SMB_GRP;
2482 #ifdef illumos
2483                         err = sid_to_id(sid, B_FALSE, &id);
2484 #endif
2485                 } else {
2486                         type = USTYPE_SMB_USR;
2487 #ifdef illumos
2488                         err = sid_to_id(sid, B_TRUE, &id);
2489 #endif
2490                 }
2491
2492 #ifdef illumos
2493                 if (err == 0) {
2494                         rid = id;
2495                         if (!cb->cb_sid2posix) {
2496                                 if (type == USTYPE_SMB_USR) {
2497                                         (void) idmap_getwinnamebyuid(rid, flag,
2498                                             &name, NULL);
2499                                 } else {
2500                                         (void) idmap_getwinnamebygid(rid, flag,
2501                                             &name, NULL);
2502                                 }
2503                                 if (name == NULL)
2504                                         name = sid;
2505                         }
2506                 }
2507 #endif
2508         }
2509
2510         if (cb->cb_sid2posix || domain == NULL || domain[0] == '\0') {
2511                 /* POSIX or -i */
2512                 if (prop == ZFS_PROP_GROUPUSED || prop == ZFS_PROP_GROUPQUOTA) {
2513                         type = USTYPE_PSX_GRP;
2514                         if (!cb->cb_numname) {
2515                                 struct group *g;
2516
2517                                 if ((g = getgrgid(rid)) != NULL)
2518                                         name = g->gr_name;
2519                         }
2520                 } else {
2521                         type = USTYPE_PSX_USR;
2522                         if (!cb->cb_numname) {
2523                                 struct passwd *p;
2524
2525                                 if ((p = getpwuid(rid)) != NULL)
2526                                         name = p->pw_name;
2527                         }
2528                 }
2529         }
2530
2531         /*
2532          * Make sure that the type/name combination is unique when doing
2533          * SID to POSIX ID translation (hence changing the type from SMB to
2534          * POSIX).
2535          */
2536         if (cb->cb_sid2posix &&
2537             nvlist_add_boolean_value(props, "smbentity", smbentity) != 0)
2538                 nomem();
2539
2540         /* Calculate/update width of TYPE field */
2541         typestr = us_type2str(type);
2542         typelen = strlen(gettext(typestr));
2543         typeidx = us_field_index("type");
2544         if (typelen > cb->cb_width[typeidx])
2545                 cb->cb_width[typeidx] = typelen;
2546         if (nvlist_add_uint32(props, "type", type) != 0)
2547                 nomem();
2548
2549         /* Calculate/update width of NAME field */
2550         if ((cb->cb_numname && cb->cb_sid2posix) || name == NULL) {
2551                 if (nvlist_add_uint64(props, "name", rid) != 0)
2552                         nomem();
2553                 namelen = snprintf(NULL, 0, "%u", rid);
2554         } else {
2555                 if (nvlist_add_string(props, "name", name) != 0)
2556                         nomem();
2557                 namelen = strlen(name);
2558         }
2559         nameidx = us_field_index("name");
2560         if (namelen > cb->cb_width[nameidx])
2561                 cb->cb_width[nameidx] = namelen;
2562
2563         /*
2564          * Check if this type/name combination is in the list and update it;
2565          * otherwise add new node to the list.
2566          */
2567         if ((n = uu_avl_find(avl, node, &sortinfo, &idx)) == NULL) {
2568                 uu_avl_insert(avl, node, idx);
2569         } else {
2570                 nvlist_free(props);
2571                 free(node);
2572                 node = n;
2573                 props = node->usn_nvl;
2574         }
2575
2576         /* Calculate/update width of USED/QUOTA fields */
2577         if (cb->cb_nicenum)
2578                 zfs_nicenum(space, sizebuf, sizeof (sizebuf));
2579         else
2580                 (void) snprintf(sizebuf, sizeof (sizebuf), "%llu", space);
2581         sizelen = strlen(sizebuf);
2582         if (prop == ZFS_PROP_USERUSED || prop == ZFS_PROP_GROUPUSED) {
2583                 propname = "used";
2584                 if (!nvlist_exists(props, "quota"))
2585                         (void) nvlist_add_uint64(props, "quota", 0);
2586         } else {
2587                 propname = "quota";
2588                 if (!nvlist_exists(props, "used"))
2589                         (void) nvlist_add_uint64(props, "used", 0);
2590         }
2591         sizeidx = us_field_index(propname);
2592         if (sizelen > cb->cb_width[sizeidx])
2593                 cb->cb_width[sizeidx] = sizelen;
2594
2595         if (nvlist_add_uint64(props, propname, space) != 0)
2596                 nomem();
2597
2598         return (0);
2599 }
2600
2601 static void
2602 print_us_node(boolean_t scripted, boolean_t parsable, int *fields, int types,
2603     size_t *width, us_node_t *node)
2604 {
2605         nvlist_t *nvl = node->usn_nvl;
2606         char valstr[MAXNAMELEN];
2607         boolean_t first = B_TRUE;
2608         int cfield = 0;
2609         int field;
2610         uint32_t ustype;
2611
2612         /* Check type */
2613         (void) nvlist_lookup_uint32(nvl, "type", &ustype);
2614         if (!(ustype & types))
2615                 return;
2616
2617         while ((field = fields[cfield]) != USFIELD_LAST) {
2618                 nvpair_t *nvp = NULL;
2619                 data_type_t type;
2620                 uint32_t val32;
2621                 uint64_t val64;
2622                 char *strval = NULL;
2623
2624                 while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
2625                         if (strcmp(nvpair_name(nvp),
2626                             us_field_names[field]) == 0)
2627                                 break;
2628                 }
2629
2630                 type = nvpair_type(nvp);
2631                 switch (type) {
2632                 case DATA_TYPE_UINT32:
2633                         (void) nvpair_value_uint32(nvp, &val32);
2634                         break;
2635                 case DATA_TYPE_UINT64:
2636                         (void) nvpair_value_uint64(nvp, &val64);
2637                         break;
2638                 case DATA_TYPE_STRING:
2639                         (void) nvpair_value_string(nvp, &strval);
2640                         break;
2641                 default:
2642                         (void) fprintf(stderr, "invalid data type\n");
2643                 }
2644
2645                 switch (field) {
2646                 case USFIELD_TYPE:
2647                         strval = (char *)us_type2str(val32);
2648                         break;
2649                 case USFIELD_NAME:
2650                         if (type == DATA_TYPE_UINT64) {
2651                                 (void) sprintf(valstr, "%llu", val64);
2652                                 strval = valstr;
2653                         }
2654                         break;
2655                 case USFIELD_USED:
2656                 case USFIELD_QUOTA:
2657                         if (type == DATA_TYPE_UINT64) {
2658                                 if (parsable) {
2659                                         (void) sprintf(valstr, "%llu", val64);
2660                                 } else {
2661                                         zfs_nicenum(val64, valstr,
2662                                             sizeof (valstr));
2663                                 }
2664                                 if (field == USFIELD_QUOTA &&
2665                                     strcmp(valstr, "0") == 0)
2666                                         strval = "none";
2667                                 else
2668                                         strval = valstr;
2669                         }
2670                         break;
2671                 }
2672
2673                 if (!first) {
2674                         if (scripted)
2675                                 (void) printf("\t");
2676                         else
2677                                 (void) printf("  ");
2678                 }
2679                 if (scripted)
2680                         (void) printf("%s", strval);
2681                 else if (field == USFIELD_TYPE || field == USFIELD_NAME)
2682                         (void) printf("%-*s", width[field], strval);
2683                 else
2684                         (void) printf("%*s", width[field], strval);
2685
2686                 first = B_FALSE;
2687                 cfield++;
2688         }
2689
2690         (void) printf("\n");
2691 }
2692
2693 static void
2694 print_us(boolean_t scripted, boolean_t parsable, int *fields, int types,
2695     size_t *width, boolean_t rmnode, uu_avl_t *avl)
2696 {
2697         us_node_t *node;
2698         const char *col;
2699         int cfield = 0;
2700         int field;
2701
2702         if (!scripted) {
2703                 boolean_t first = B_TRUE;
2704
2705                 while ((field = fields[cfield]) != USFIELD_LAST) {
2706                         col = gettext(us_field_hdr[field]);
2707                         if (field == USFIELD_TYPE || field == USFIELD_NAME) {
2708                                 (void) printf(first ? "%-*s" : "  %-*s",
2709                                     width[field], col);
2710                         } else {
2711                                 (void) printf(first ? "%*s" : "  %*s",
2712                                     width[field], col);
2713                         }
2714                         first = B_FALSE;
2715                         cfield++;
2716                 }
2717                 (void) printf("\n");
2718         }
2719
2720         for (node = uu_avl_first(avl); node; node = uu_avl_next(avl, node)) {
2721                 print_us_node(scripted, parsable, fields, types, width, node);
2722                 if (rmnode)
2723                         nvlist_free(node->usn_nvl);
2724         }
2725 }
2726
2727 static int
2728 zfs_do_userspace(int argc, char **argv)
2729 {
2730         zfs_handle_t *zhp;
2731         zfs_userquota_prop_t p;
2732
2733         uu_avl_pool_t *avl_pool;
2734         uu_avl_t *avl_tree;
2735         uu_avl_walk_t *walk;
2736         char *delim;
2737         char deffields[] = "type,name,used,quota";
2738         char *ofield = NULL;
2739         char *tfield = NULL;
2740         int cfield = 0;
2741         int fields[256];
2742         int i;
2743         boolean_t scripted = B_FALSE;
2744         boolean_t prtnum = B_FALSE;
2745         boolean_t parsable = B_FALSE;
2746         boolean_t sid2posix = B_FALSE;
2747         int ret = 0;
2748         int c;
2749         zfs_sort_column_t *sortcol = NULL;
2750         int types = USTYPE_PSX_USR | USTYPE_SMB_USR;
2751         us_cbdata_t cb;
2752         us_node_t *node;
2753         us_node_t *rmnode;
2754         uu_list_pool_t *listpool;
2755         uu_list_t *list;
2756         uu_avl_index_t idx = 0;
2757         uu_list_index_t idx2 = 0;
2758
2759         if (argc < 2)
2760                 usage(B_FALSE);
2761
2762         if (strcmp(argv[0], "groupspace") == 0)
2763                 /* Toggle default group types */
2764                 types = USTYPE_PSX_GRP | USTYPE_SMB_GRP;
2765
2766         while ((c = getopt(argc, argv, "nHpo:s:S:t:i")) != -1) {
2767                 switch (c) {
2768                 case 'n':
2769                         prtnum = B_TRUE;
2770                         break;
2771                 case 'H':
2772                         scripted = B_TRUE;
2773                         break;
2774                 case 'p':
2775                         parsable = B_TRUE;
2776                         break;
2777                 case 'o':
2778                         ofield = optarg;
2779                         break;
2780                 case 's':
2781                 case 'S':
2782                         if (zfs_add_sort_column(&sortcol, optarg,
2783                             c == 's' ? B_FALSE : B_TRUE) != 0) {
2784                                 (void) fprintf(stderr,
2785                                     gettext("invalid field '%s'\n"), optarg);
2786                                 usage(B_FALSE);
2787                         }
2788                         break;
2789                 case 't':
2790                         tfield = optarg;
2791                         break;
2792                 case 'i':
2793                         sid2posix = B_TRUE;
2794                         break;
2795                 case ':':
2796                         (void) fprintf(stderr, gettext("missing argument for "
2797                             "'%c' option\n"), optopt);
2798                         usage(B_FALSE);
2799                         break;
2800                 case '?':
2801                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2802                             optopt);
2803                         usage(B_FALSE);
2804                 }
2805         }
2806
2807         argc -= optind;
2808         argv += optind;
2809
2810         if (argc < 1) {
2811                 (void) fprintf(stderr, gettext("missing dataset name\n"));
2812                 usage(B_FALSE);
2813         }
2814         if (argc > 1) {
2815                 (void) fprintf(stderr, gettext("too many arguments\n"));
2816                 usage(B_FALSE);
2817         }
2818
2819         /* Use default output fields if not specified using -o */
2820         if (ofield == NULL)
2821                 ofield = deffields;
2822         do {
2823                 if ((delim = strchr(ofield, ',')) != NULL)
2824                         *delim = '\0';
2825                 if ((fields[cfield++] = us_field_index(ofield)) == -1) {
2826                         (void) fprintf(stderr, gettext("invalid type '%s' "
2827                             "for -o option\n"), ofield);
2828                         return (-1);
2829                 }
2830                 if (delim != NULL)
2831                         ofield = delim + 1;
2832         } while (delim != NULL);
2833         fields[cfield] = USFIELD_LAST;
2834
2835         /* Override output types (-t option) */
2836         if (tfield != NULL) {
2837                 types = 0;
2838
2839                 do {
2840                         boolean_t found = B_FALSE;
2841
2842                         if ((delim = strchr(tfield, ',')) != NULL)
2843                                 *delim = '\0';
2844                         for (i = 0; i < sizeof (us_type_bits) / sizeof (int);
2845                             i++) {
2846                                 if (strcmp(tfield, us_type_names[i]) == 0) {
2847                                         found = B_TRUE;
2848                                         types |= us_type_bits[i];
2849                                         break;
2850                                 }
2851                         }
2852                         if (!found) {
2853                                 (void) fprintf(stderr, gettext("invalid type "
2854                                     "'%s' for -t option\n"), tfield);
2855                                 return (-1);
2856                         }
2857                         if (delim != NULL)
2858                                 tfield = delim + 1;
2859                 } while (delim != NULL);
2860         }
2861
2862         if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL)
2863                 return (1);
2864
2865         if ((avl_pool = uu_avl_pool_create("us_avl_pool", sizeof (us_node_t),
2866             offsetof(us_node_t, usn_avlnode), us_compare, UU_DEFAULT)) == NULL)
2867                 nomem();
2868         if ((avl_tree = uu_avl_create(avl_pool, NULL, UU_DEFAULT)) == NULL)
2869                 nomem();
2870
2871         /* Always add default sorting columns */
2872         (void) zfs_add_sort_column(&sortcol, "type", B_FALSE);
2873         (void) zfs_add_sort_column(&sortcol, "name", B_FALSE);
2874
2875         cb.cb_sortcol = sortcol;
2876         cb.cb_numname = prtnum;
2877         cb.cb_nicenum = !parsable;
2878         cb.cb_avl_pool = avl_pool;
2879         cb.cb_avl = avl_tree;
2880         cb.cb_sid2posix = sid2posix;
2881
2882         for (i = 0; i < USFIELD_LAST; i++)
2883                 cb.cb_width[i] = strlen(gettext(us_field_hdr[i]));
2884
2885         for (p = 0; p < ZFS_NUM_USERQUOTA_PROPS; p++) {
2886                 if (((p == ZFS_PROP_USERUSED || p == ZFS_PROP_USERQUOTA) &&
2887                     !(types & (USTYPE_PSX_USR | USTYPE_SMB_USR))) ||
2888                     ((p == ZFS_PROP_GROUPUSED || p == ZFS_PROP_GROUPQUOTA) &&
2889                     !(types & (USTYPE_PSX_GRP | USTYPE_SMB_GRP))))
2890                         continue;
2891                 cb.cb_prop = p;
2892                 if ((ret = zfs_userspace(zhp, p, userspace_cb, &cb)) != 0)
2893                         return (ret);
2894         }
2895
2896         /* Sort the list */
2897         if ((node = uu_avl_first(avl_tree)) == NULL)
2898                 return (0);
2899
2900         us_populated = B_TRUE;
2901
2902         listpool = uu_list_pool_create("tmplist", sizeof (us_node_t),
2903             offsetof(us_node_t, usn_listnode), NULL, UU_DEFAULT);
2904         list = uu_list_create(listpool, NULL, UU_DEFAULT);
2905         uu_list_node_init(node, &node->usn_listnode, listpool);
2906
2907         while (node != NULL) {
2908                 rmnode = node;
2909                 node = uu_avl_next(avl_tree, node);
2910                 uu_avl_remove(avl_tree, rmnode);
2911                 if (uu_list_find(list, rmnode, NULL, &idx2) == NULL)
2912                         uu_list_insert(list, rmnode, idx2);
2913         }
2914
2915         for (node = uu_list_first(list); node != NULL;
2916             node = uu_list_next(list, node)) {
2917                 us_sort_info_t sortinfo = { sortcol, cb.cb_numname };
2918
2919                 if (uu_avl_find(avl_tree, node, &sortinfo, &idx) == NULL)
2920                         uu_avl_insert(avl_tree, node, idx);
2921         }
2922
2923         uu_list_destroy(list);
2924         uu_list_pool_destroy(listpool);
2925
2926         /* Print and free node nvlist memory */
2927         print_us(scripted, parsable, fields, types, cb.cb_width, B_TRUE,
2928             cb.cb_avl);
2929
2930         zfs_free_sort_columns(sortcol);
2931
2932         /* Clean up the AVL tree */
2933         if ((walk = uu_avl_walk_start(cb.cb_avl, UU_WALK_ROBUST)) == NULL)
2934                 nomem();
2935
2936         while ((node = uu_avl_walk_next(walk)) != NULL) {
2937                 uu_avl_remove(cb.cb_avl, node);
2938                 free(node);
2939         }
2940
2941         uu_avl_walk_end(walk);
2942         uu_avl_destroy(avl_tree);
2943         uu_avl_pool_destroy(avl_pool);
2944
2945         return (ret);
2946 }
2947
2948 /*
2949  * list [-Hp][-r|-d max] [-o property[,...]] [-s property] ... [-S property] ...
2950  *      [-t type[,...]] [filesystem|volume|snapshot] ...
2951  *
2952  *      -H      Scripted mode; elide headers and separate columns by tabs.
2953  *      -p      Display values in parsable (literal) format.
2954  *      -r      Recurse over all children.
2955  *      -d      Limit recursion by depth.
2956  *      -o      Control which fields to display.
2957  *      -s      Specify sort columns, descending order.
2958  *      -S      Specify sort columns, ascending order.
2959  *      -t      Control which object types to display.
2960  *
2961  * When given no arguments, list all filesystems in the system.
2962  * Otherwise, list the specified datasets, optionally recursing down them if
2963  * '-r' is specified.
2964  */
2965 typedef struct list_cbdata {
2966         boolean_t       cb_first;
2967         boolean_t       cb_literal;
2968         boolean_t       cb_scripted;
2969         zprop_list_t    *cb_proplist;
2970 } list_cbdata_t;
2971
2972 /*
2973  * Given a list of columns to display, output appropriate headers for each one.
2974  */
2975 static void
2976 print_header(list_cbdata_t *cb)
2977 {
2978         zprop_list_t *pl = cb->cb_proplist;
2979         char headerbuf[ZFS_MAXPROPLEN];
2980         const char *header;
2981         int i;
2982         boolean_t first = B_TRUE;
2983         boolean_t right_justify;
2984
2985         for (; pl != NULL; pl = pl->pl_next) {
2986                 if (!first) {
2987                         (void) printf("  ");
2988                 } else {
2989                         first = B_FALSE;
2990                 }
2991
2992                 right_justify = B_FALSE;
2993                 if (pl->pl_prop != ZPROP_INVAL) {
2994                         header = zfs_prop_column_name(pl->pl_prop);
2995                         right_justify = zfs_prop_align_right(pl->pl_prop);
2996                 } else {
2997                         for (i = 0; pl->pl_user_prop[i] != '\0'; i++)
2998                                 headerbuf[i] = toupper(pl->pl_user_prop[i]);
2999                         headerbuf[i] = '\0';
3000                         header = headerbuf;
3001                 }
3002
3003                 if (pl->pl_next == NULL && !right_justify)
3004                         (void) printf("%s", header);
3005                 else if (right_justify)
3006                         (void) printf("%*s", pl->pl_width, header);
3007                 else
3008                         (void) printf("%-*s", pl->pl_width, header);
3009         }
3010
3011         (void) printf("\n");
3012 }
3013
3014 /*
3015  * Given a dataset and a list of fields, print out all the properties according
3016  * to the described layout.
3017  */
3018 static void
3019 print_dataset(zfs_handle_t *zhp, list_cbdata_t *cb)
3020 {
3021         zprop_list_t *pl = cb->cb_proplist;
3022         boolean_t first = B_TRUE;
3023         char property[ZFS_MAXPROPLEN];
3024         nvlist_t *userprops = zfs_get_user_props(zhp);
3025         nvlist_t *propval;
3026         char *propstr;
3027         boolean_t right_justify;
3028
3029         for (; pl != NULL; pl = pl->pl_next) {
3030                 if (!first) {
3031                         if (cb->cb_scripted)
3032                                 (void) printf("\t");
3033                         else
3034                                 (void) printf("  ");
3035                 } else {
3036                         first = B_FALSE;
3037                 }
3038
3039                 if (pl->pl_prop == ZFS_PROP_NAME) {
3040                         (void) strlcpy(property, zfs_get_name(zhp),
3041                             sizeof (property));
3042                         propstr = property;
3043                         right_justify = zfs_prop_align_right(pl->pl_prop);
3044                 } else if (pl->pl_prop != ZPROP_INVAL) {
3045                         if (zfs_prop_get(zhp, pl->pl_prop, property,
3046                             sizeof (property), NULL, NULL, 0,
3047                             cb->cb_literal) != 0)
3048                                 propstr = "-";
3049                         else
3050                                 propstr = property;
3051                         right_justify = zfs_prop_align_right(pl->pl_prop);
3052                 } else if (zfs_prop_userquota(pl->pl_user_prop)) {
3053                         if (zfs_prop_get_userquota(zhp, pl->pl_user_prop,
3054                             property, sizeof (property), cb->cb_literal) != 0)
3055                                 propstr = "-";
3056                         else
3057                                 propstr = property;
3058                         right_justify = B_TRUE;
3059                 } else if (zfs_prop_written(pl->pl_user_prop)) {
3060                         if (zfs_prop_get_written(zhp, pl->pl_user_prop,
3061                             property, sizeof (property), cb->cb_literal) != 0)
3062                                 propstr = "-";
3063                         else
3064                                 propstr = property;
3065                         right_justify = B_TRUE;
3066                 } else {
3067                         if (nvlist_lookup_nvlist(userprops,
3068                             pl->pl_user_prop, &propval) != 0)
3069                                 propstr = "-";
3070                         else
3071                                 verify(nvlist_lookup_string(propval,
3072                                     ZPROP_VALUE, &propstr) == 0);
3073                         right_justify = B_FALSE;
3074                 }
3075
3076                 /*
3077                  * If this is being called in scripted mode, or if this is the
3078                  * last column and it is left-justified, don't include a width
3079                  * format specifier.
3080                  */
3081                 if (cb->cb_scripted || (pl->pl_next == NULL && !right_justify))
3082                         (void) printf("%s", propstr);
3083                 else if (right_justify)
3084                         (void) printf("%*s", pl->pl_width, propstr);
3085                 else
3086                         (void) printf("%-*s", pl->pl_width, propstr);
3087         }
3088
3089         (void) printf("\n");
3090 }
3091
3092 /*
3093  * Generic callback function to list a dataset or snapshot.
3094  */
3095 static int
3096 list_callback(zfs_handle_t *zhp, void *data)
3097 {
3098         list_cbdata_t *cbp = data;
3099
3100         if (cbp->cb_first) {
3101                 if (!cbp->cb_scripted)
3102                         print_header(cbp);
3103                 cbp->cb_first = B_FALSE;
3104         }
3105
3106         print_dataset(zhp, cbp);
3107
3108         return (0);
3109 }
3110
3111 static int
3112 zfs_do_list(int argc, char **argv)
3113 {
3114         int c;
3115         static char default_fields[] =
3116             "name,used,available,referenced,mountpoint";
3117         int types = ZFS_TYPE_DATASET;
3118         boolean_t types_specified = B_FALSE;
3119         char *fields = NULL;
3120         list_cbdata_t cb = { 0 };
3121         char *value;
3122         int limit = 0;
3123         int ret = 0;
3124         zfs_sort_column_t *sortcol = NULL;
3125         int flags = ZFS_ITER_PROP_LISTSNAPS | ZFS_ITER_ARGS_CAN_BE_PATHS;
3126
3127         /* check options */
3128         while ((c = getopt(argc, argv, "HS:d:o:prs:t:")) != -1) {
3129                 switch (c) {
3130                 case 'o':
3131                         fields = optarg;
3132                         break;
3133                 case 'p':
3134                         cb.cb_literal = B_TRUE;
3135                         flags |= ZFS_ITER_LITERAL_PROPS;
3136                         break;
3137                 case 'd':
3138                         limit = parse_depth(optarg, &flags);
3139                         break;
3140                 case 'r':
3141                         flags |= ZFS_ITER_RECURSE;
3142                         break;
3143                 case 'H':
3144                         cb.cb_scripted = B_TRUE;
3145                         break;
3146                 case 's':
3147                         if (zfs_add_sort_column(&sortcol, optarg,
3148                             B_FALSE) != 0) {
3149                                 (void) fprintf(stderr,
3150                                     gettext("invalid property '%s'\n"), optarg);
3151                                 usage(B_FALSE);
3152                         }
3153                         break;
3154                 case 'S':
3155                         if (zfs_add_sort_column(&sortcol, optarg,
3156                             B_TRUE) != 0) {
3157                                 (void) fprintf(stderr,
3158                                     gettext("invalid property '%s'\n"), optarg);
3159                                 usage(B_FALSE);
3160                         }
3161                         break;
3162                 case 't':
3163                         types = 0;
3164                         types_specified = B_TRUE;
3165                         flags &= ~ZFS_ITER_PROP_LISTSNAPS;
3166                         while (*optarg != '\0') {
3167                                 static char *type_subopts[] = { "filesystem",
3168                                     "volume", "snapshot", "snap", "bookmark",
3169                                     "all", NULL };
3170
3171                                 switch (getsubopt(&optarg, type_subopts,
3172                                     &value)) {
3173                                 case 0:
3174                                         types |= ZFS_TYPE_FILESYSTEM;
3175                                         break;
3176                                 case 1:
3177                                         types |= ZFS_TYPE_VOLUME;
3178                                         break;
3179                                 case 2:
3180                                 case 3:
3181                                         types |= ZFS_TYPE_SNAPSHOT;
3182                                         break;
3183                                 case 4:
3184                                         types |= ZFS_TYPE_BOOKMARK;
3185                                         break;
3186                                 case 5:
3187                                         types = ZFS_TYPE_DATASET |
3188                                             ZFS_TYPE_BOOKMARK;
3189                                         break;
3190                                 default:
3191                                         (void) fprintf(stderr,
3192                                             gettext("invalid type '%s'\n"),
3193                                             suboptarg);
3194                                         usage(B_FALSE);
3195                                 }
3196                         }
3197                         break;
3198                 case ':':
3199                         (void) fprintf(stderr, gettext("missing argument for "
3200                             "'%c' option\n"), optopt);
3201                         usage(B_FALSE);
3202                         break;
3203                 case '?':
3204                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3205                             optopt);
3206                         usage(B_FALSE);
3207                 }
3208         }
3209
3210         argc -= optind;
3211         argv += optind;
3212
3213         if (fields == NULL)
3214                 fields = default_fields;
3215
3216         /*
3217          * If we are only going to list snapshot names and sort by name,
3218          * then we can use faster version.
3219          */
3220         if (strcmp(fields, "name") == 0 && zfs_sort_only_by_name(sortcol))
3221                 flags |= ZFS_ITER_SIMPLE;
3222
3223         /*
3224          * If "-o space" and no types were specified, don't display snapshots.
3225          */
3226         if (strcmp(fields, "space") == 0 && types_specified == B_FALSE)
3227                 types &= ~ZFS_TYPE_SNAPSHOT;
3228
3229         /*
3230          * If the user specifies '-o all', the zprop_get_list() doesn't
3231          * normally include the name of the dataset.  For 'zfs list', we always
3232          * want this property to be first.
3233          */
3234         if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
3235             != 0)
3236                 usage(B_FALSE);
3237
3238         cb.cb_first = B_TRUE;
3239
3240         ret = zfs_for_each(argc, argv, flags, types, sortcol, &cb.cb_proplist,
3241             limit, list_callback, &cb);
3242
3243         zprop_free_list(cb.cb_proplist);
3244         zfs_free_sort_columns(sortcol);
3245
3246         if (ret == 0 && cb.cb_first && !cb.cb_scripted)
3247                 (void) printf(gettext("no datasets available\n"));
3248
3249         return (ret);
3250 }
3251
3252 /*
3253  * zfs rename [-f] <fs | snap | vol> <fs | snap | vol>
3254  * zfs rename [-f] -p <fs | vol> <fs | vol>
3255  * zfs rename -r <snap> <snap>
3256  * zfs rename -u [-p] <fs> <fs>
3257  *
3258  * Renames the given dataset to another of the same type.
3259  *
3260  * The '-p' flag creates all the non-existing ancestors of the target first.
3261  */
3262 /* ARGSUSED */
3263 static int
3264 zfs_do_rename(int argc, char **argv)
3265 {
3266         zfs_handle_t *zhp;
3267         renameflags_t flags = { 0 };
3268         int c;
3269         int ret = 0;
3270         int types;
3271         boolean_t parents = B_FALSE;
3272         char *snapshot = NULL;
3273
3274         /* check options */
3275         while ((c = getopt(argc, argv, "fpru")) != -1) {
3276                 switch (c) {
3277                 case 'p':
3278                         parents = B_TRUE;
3279                         break;
3280                 case 'r':
3281                         flags.recurse = B_TRUE;
3282                         break;
3283                 case 'u':
3284                         flags.nounmount = B_TRUE;
3285                         break;
3286                 case 'f':
3287                         flags.forceunmount = B_TRUE;
3288                         break;
3289                 case '?':
3290                 default:
3291                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3292                             optopt);
3293                         usage(B_FALSE);
3294                 }
3295         }
3296
3297         argc -= optind;
3298         argv += optind;
3299
3300         /* check number of arguments */
3301         if (argc < 1) {
3302                 (void) fprintf(stderr, gettext("missing source dataset "
3303                     "argument\n"));
3304                 usage(B_FALSE);
3305         }
3306         if (argc < 2) {
3307                 (void) fprintf(stderr, gettext("missing target dataset "
3308                     "argument\n"));
3309                 usage(B_FALSE);
3310         }
3311         if (argc > 2) {
3312                 (void) fprintf(stderr, gettext("too many arguments\n"));
3313                 usage(B_FALSE);
3314         }
3315
3316         if (flags.recurse && parents) {
3317                 (void) fprintf(stderr, gettext("-p and -r options are mutually "
3318                     "exclusive\n"));
3319                 usage(B_FALSE);
3320         }
3321
3322         if (flags.recurse && strchr(argv[0], '@') == 0) {
3323                 (void) fprintf(stderr, gettext("source dataset for recursive "
3324                     "rename must be a snapshot\n"));
3325                 usage(B_FALSE);
3326         }
3327
3328         if (flags.nounmount && parents) {
3329                 (void) fprintf(stderr, gettext("-u and -p options are mutually "
3330                     "exclusive\n"));
3331                 usage(B_FALSE);
3332         }
3333
3334         if (flags.nounmount)
3335                 types = ZFS_TYPE_FILESYSTEM;
3336         else if (parents)
3337                 types = ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME;
3338         else
3339                 types = ZFS_TYPE_DATASET;
3340
3341         if (flags.recurse) {
3342                 /*
3343                  * When we do recursive rename we are fine when the given
3344                  * snapshot for the given dataset doesn't exist - it can
3345                  * still exists below.
3346                  */
3347
3348                 snapshot = strchr(argv[0], '@');
3349                 assert(snapshot != NULL);
3350                 *snapshot = '\0';
3351                 snapshot++;
3352         }
3353
3354         if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL)
3355                 return (1);
3356
3357         /* If we were asked and the name looks good, try to create ancestors. */
3358         if (parents && zfs_name_valid(argv[1], zfs_get_type(zhp)) &&
3359             zfs_create_ancestors(g_zfs, argv[1]) != 0) {
3360                 zfs_close(zhp);
3361                 return (1);
3362         }
3363
3364         ret = (zfs_rename(zhp, snapshot, argv[1], flags) != 0);
3365
3366         zfs_close(zhp);
3367         return (ret);
3368 }
3369
3370 /*
3371  * zfs promote <fs>
3372  *
3373  * Promotes the given clone fs to be the parent
3374  */
3375 /* ARGSUSED */
3376 static int
3377 zfs_do_promote(int argc, char **argv)
3378 {
3379         zfs_handle_t *zhp;
3380         int ret = 0;
3381
3382         /* check options */
3383         if (argc > 1 && argv[1][0] == '-') {
3384                 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3385                     argv[1][1]);
3386                 usage(B_FALSE);
3387         }
3388
3389         /* check number of arguments */
3390         if (argc < 2) {
3391                 (void) fprintf(stderr, gettext("missing clone filesystem"
3392                     " argument\n"));
3393                 usage(B_FALSE);
3394         }
3395         if (argc > 2) {
3396                 (void) fprintf(stderr, gettext("too many arguments\n"));
3397                 usage(B_FALSE);
3398         }
3399
3400         zhp = zfs_open(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3401         if (zhp == NULL)
3402                 return (1);
3403
3404         ret = (zfs_promote(zhp) != 0);
3405
3406
3407         zfs_close(zhp);
3408         return (ret);
3409 }
3410
3411 /*
3412  * zfs rollback [-rRf] <snapshot>
3413  *
3414  *      -r      Delete any intervening snapshots before doing rollback
3415  *      -R      Delete any snapshots and their clones
3416  *      -f      ignored for backwards compatability
3417  *
3418  * Given a filesystem, rollback to a specific snapshot, discarding any changes
3419  * since then and making it the active dataset.  If more recent snapshots exist,
3420  * the command will complain unless the '-r' flag is given.
3421  */
3422 typedef struct rollback_cbdata {
3423         uint64_t        cb_create;
3424         boolean_t       cb_first;
3425         int             cb_doclones;
3426         char            *cb_target;
3427         int             cb_error;
3428         boolean_t       cb_recurse;
3429 } rollback_cbdata_t;
3430
3431 static int
3432 rollback_check_dependent(zfs_handle_t *zhp, void *data)
3433 {
3434         rollback_cbdata_t *cbp = data;
3435
3436         if (cbp->cb_first && cbp->cb_recurse) {
3437                 (void) fprintf(stderr, gettext("cannot rollback to "
3438                     "'%s': clones of previous snapshots exist\n"),
3439                     cbp->cb_target);
3440                 (void) fprintf(stderr, gettext("use '-R' to "
3441                     "force deletion of the following clones and "
3442                     "dependents:\n"));
3443                 cbp->cb_first = 0;
3444                 cbp->cb_error = 1;
3445         }
3446
3447         (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
3448
3449         zfs_close(zhp);
3450         return (0);
3451 }
3452
3453 /*
3454  * Report any snapshots more recent than the one specified.  Used when '-r' is
3455  * not specified.  We reuse this same callback for the snapshot dependents - if
3456  * 'cb_dependent' is set, then this is a dependent and we should report it
3457  * without checking the transaction group.
3458  */
3459 static int
3460 rollback_check(zfs_handle_t *zhp, void *data)
3461 {
3462         rollback_cbdata_t *cbp = data;
3463
3464         if (cbp->cb_doclones) {
3465                 zfs_close(zhp);
3466                 return (0);
3467         }
3468
3469         if (zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > cbp->cb_create) {
3470                 if (cbp->cb_first && !cbp->cb_recurse) {
3471                         (void) fprintf(stderr, gettext("cannot "
3472                             "rollback to '%s': more recent snapshots "
3473                             "or bookmarks exist\n"),
3474                             cbp->cb_target);
3475                         (void) fprintf(stderr, gettext("use '-r' to "
3476                             "force deletion of the following "
3477                             "snapshots and bookmarks:\n"));
3478                         cbp->cb_first = 0;
3479                         cbp->cb_error = 1;
3480                 }
3481
3482                 if (cbp->cb_recurse) {
3483                         if (zfs_iter_dependents(zhp, B_TRUE,
3484                             rollback_check_dependent, cbp) != 0) {
3485                                 zfs_close(zhp);
3486                                 return (-1);
3487                         }
3488                 } else {
3489                         (void) fprintf(stderr, "%s\n",
3490                             zfs_get_name(zhp));
3491                 }
3492         }
3493         zfs_close(zhp);
3494         return (0);
3495 }
3496
3497 static int
3498 zfs_do_rollback(int argc, char **argv)
3499 {
3500         int ret = 0;
3501         int c;
3502         boolean_t force = B_FALSE;
3503         rollback_cbdata_t cb = { 0 };
3504         zfs_handle_t *zhp, *snap;
3505         char parentname[ZFS_MAX_DATASET_NAME_LEN];
3506         char *delim;
3507
3508         /* check options */
3509         while ((c = getopt(argc, argv, "rRf")) != -1) {
3510                 switch (c) {
3511                 case 'r':
3512                         cb.cb_recurse = 1;
3513                         break;
3514                 case 'R':
3515                         cb.cb_recurse = 1;
3516                         cb.cb_doclones = 1;
3517                         break;
3518                 case 'f':
3519                         force = B_TRUE;
3520                         break;
3521                 case '?':
3522                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3523                             optopt);
3524                         usage(B_FALSE);
3525                 }
3526         }
3527
3528         argc -= optind;
3529         argv += optind;
3530
3531         /* check number of arguments */
3532         if (argc < 1) {
3533                 (void) fprintf(stderr, gettext("missing dataset argument\n"));
3534                 usage(B_FALSE);
3535         }
3536         if (argc > 1) {
3537                 (void) fprintf(stderr, gettext("too many arguments\n"));
3538                 usage(B_FALSE);
3539         }
3540
3541         /* open the snapshot */
3542         if ((snap = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
3543                 return (1);
3544
3545         /* open the parent dataset */
3546         (void) strlcpy(parentname, argv[0], sizeof (parentname));
3547         verify((delim = strrchr(parentname, '@')) != NULL);
3548         *delim = '\0';
3549         if ((zhp = zfs_open(g_zfs, parentname, ZFS_TYPE_DATASET)) == NULL) {
3550                 zfs_close(snap);
3551                 return (1);
3552         }
3553
3554         /*
3555          * Check for more recent snapshots and/or clones based on the presence
3556          * of '-r' and '-R'.
3557          */
3558         cb.cb_target = argv[0];
3559         cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG);
3560         cb.cb_first = B_TRUE;
3561         cb.cb_error = 0;
3562         if ((ret = zfs_iter_snapshots(zhp, B_FALSE, rollback_check, &cb)) != 0)
3563                 goto out;
3564         if ((ret = zfs_iter_bookmarks(zhp, rollback_check, &cb)) != 0)
3565                 goto out;
3566
3567         if ((ret = cb.cb_error) != 0)
3568                 goto out;
3569
3570         /*
3571          * Rollback parent to the given snapshot.
3572          */
3573         ret = zfs_rollback(zhp, snap, force);
3574
3575 out:
3576         zfs_close(snap);
3577         zfs_close(zhp);
3578
3579         if (ret == 0)
3580                 return (0);
3581         else
3582                 return (1);
3583 }
3584
3585 /*
3586  * zfs set property=value ... { fs | snap | vol } ...
3587  *
3588  * Sets the given properties for all datasets specified on the command line.
3589  */
3590
3591 static int
3592 set_callback(zfs_handle_t *zhp, void *data)
3593 {
3594         nvlist_t *props = data;
3595
3596         if (zfs_prop_set_list(zhp, props) != 0) {
3597                 switch (libzfs_errno(g_zfs)) {
3598                 case EZFS_MOUNTFAILED:
3599                         (void) fprintf(stderr, gettext("property may be set "
3600                             "but unable to remount filesystem\n"));
3601                         break;
3602                 case EZFS_SHARENFSFAILED:
3603                         (void) fprintf(stderr, gettext("property may be set "
3604                             "but unable to reshare filesystem\n"));
3605                         break;
3606                 }
3607                 return (1);
3608         }
3609         return (0);
3610 }
3611
3612 static int
3613 zfs_do_set(int argc, char **argv)
3614 {
3615         nvlist_t *props = NULL;
3616         int ds_start = -1; /* argv idx of first dataset arg */
3617         int ret = 0;
3618
3619         /* check for options */
3620         if (argc > 1 && argv[1][0] == '-') {
3621                 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3622                     argv[1][1]);
3623                 usage(B_FALSE);
3624         }
3625
3626         /* check number of arguments */
3627         if (argc < 2) {
3628                 (void) fprintf(stderr, gettext("missing arguments\n"));
3629                 usage(B_FALSE);
3630         }
3631         if (argc < 3) {
3632                 if (strchr(argv[1], '=') == NULL) {
3633                         (void) fprintf(stderr, gettext("missing property=value "
3634                             "argument(s)\n"));
3635                 } else {
3636                         (void) fprintf(stderr, gettext("missing dataset "
3637                             "name(s)\n"));
3638                 }
3639                 usage(B_FALSE);
3640         }
3641
3642         /* validate argument order:  prop=val args followed by dataset args */
3643         for (int i = 1; i < argc; i++) {
3644                 if (strchr(argv[i], '=') != NULL) {
3645                         if (ds_start > 0) {
3646                                 /* out-of-order prop=val argument */
3647                                 (void) fprintf(stderr, gettext("invalid "
3648                                     "argument order\n"), i);
3649                                 usage(B_FALSE);
3650                         }
3651                 } else if (ds_start < 0) {
3652                         ds_start = i;
3653                 }
3654         }
3655         if (ds_start < 0) {
3656                 (void) fprintf(stderr, gettext("missing dataset name(s)\n"));
3657                 usage(B_FALSE);
3658         }
3659
3660         /* Populate a list of property settings */
3661         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
3662                 nomem();
3663         for (int i = 1; i < ds_start; i++) {
3664                 if ((ret = parseprop(props, argv[i])) != 0)
3665                         goto error;
3666         }
3667
3668         ret = zfs_for_each(argc - ds_start, argv + ds_start, 0,
3669             ZFS_TYPE_DATASET, NULL, NULL, 0, set_callback, props);
3670
3671 error:
3672         nvlist_free(props);
3673         return (ret);
3674 }
3675
3676 typedef struct snap_cbdata {
3677         nvlist_t *sd_nvl;
3678         boolean_t sd_recursive;
3679         const char *sd_snapname;
3680 } snap_cbdata_t;
3681
3682 static int
3683 zfs_snapshot_cb(zfs_handle_t *zhp, void *arg)
3684 {
3685         snap_cbdata_t *sd = arg;
3686         char *name;
3687         int rv = 0;
3688         int error;
3689
3690         if (sd->sd_recursive &&
3691             zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) != 0) {
3692                 zfs_close(zhp);
3693                 return (0);
3694         }
3695
3696         error = asprintf(&name, "%s@%s", zfs_get_name(zhp), sd->sd_snapname);
3697         if (error == -1)
3698                 nomem();
3699         fnvlist_add_boolean(sd->sd_nvl, name);
3700         free(name);
3701
3702         if (sd->sd_recursive)
3703                 rv = zfs_iter_filesystems(zhp, zfs_snapshot_cb, sd);
3704         zfs_close(zhp);
3705         return (rv);
3706 }
3707
3708 /*
3709  * zfs snapshot [-r] [-o prop=value] ... <fs@snap>
3710  *
3711  * Creates a snapshot with the given name.  While functionally equivalent to
3712  * 'zfs create', it is a separate command to differentiate intent.
3713  */
3714 static int
3715 zfs_do_snapshot(int argc, char **argv)
3716 {
3717         int ret = 0;
3718         int c;
3719         nvlist_t *props;
3720         snap_cbdata_t sd = { 0 };
3721         boolean_t multiple_snaps = B_FALSE;
3722
3723         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
3724                 nomem();
3725         if (nvlist_alloc(&sd.sd_nvl, NV_UNIQUE_NAME, 0) != 0)
3726                 nomem();
3727
3728         /* check options */
3729         while ((c = getopt(argc, argv, "ro:")) != -1) {
3730                 switch (c) {
3731                 case 'o':
3732                         if (parseprop(props, optarg) != 0)
3733                                 return (1);
3734                         break;
3735                 case 'r':
3736                         sd.sd_recursive = B_TRUE;
3737                         multiple_snaps = B_TRUE;
3738                         break;
3739                 case '?':
3740                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3741                             optopt);
3742                         goto usage;
3743                 }
3744         }
3745
3746         argc -= optind;
3747         argv += optind;
3748
3749         /* check number of arguments */
3750         if (argc < 1) {
3751                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
3752                 goto usage;
3753         }
3754
3755         if (argc > 1)
3756                 multiple_snaps = B_TRUE;
3757         for (; argc > 0; argc--, argv++) {
3758                 char *atp;
3759                 zfs_handle_t *zhp;
3760
3761                 atp = strchr(argv[0], '@');
3762                 if (atp == NULL)
3763                         goto usage;
3764                 *atp = '\0';
3765                 sd.sd_snapname = atp + 1;
3766                 zhp = zfs_open(g_zfs, argv[0],
3767                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3768                 if (zhp == NULL)
3769                         goto usage;
3770                 if (zfs_snapshot_cb(zhp, &sd) != 0)
3771                         goto usage;
3772         }
3773
3774         ret = zfs_snapshot_nvl(g_zfs, sd.sd_nvl, props);
3775         nvlist_free(sd.sd_nvl);
3776         nvlist_free(props);
3777         if (ret != 0 && multiple_snaps)
3778                 (void) fprintf(stderr, gettext("no snapshots were created\n"));
3779         return (ret != 0);
3780
3781 usage:
3782         nvlist_free(sd.sd_nvl);
3783         nvlist_free(props);
3784         usage(B_FALSE);
3785         return (-1);
3786 }
3787
3788 /*
3789  * Send a backup stream to stdout.
3790  */
3791 static int
3792 zfs_do_send(int argc, char **argv)
3793 {
3794         char *fromname = NULL;
3795         char *toname = NULL;
3796         char *resume_token = NULL;
3797         char *cp;
3798         zfs_handle_t *zhp;
3799         sendflags_t flags = { 0 };
3800         int c, err;
3801         nvlist_t *dbgnv = NULL;
3802         boolean_t extraverbose = B_FALSE;
3803
3804         struct option long_options[] = {
3805                 {"replicate",   no_argument,            NULL, 'R'},
3806                 {"props",       no_argument,            NULL, 'p'},
3807                 {"parsable",    no_argument,            NULL, 'P'},
3808                 {"dedup",       no_argument,            NULL, 'D'},
3809                 {"verbose",     no_argument,            NULL, 'v'},
3810                 {"dryrun",      no_argument,            NULL, 'n'},
3811                 {"large-block", no_argument,            NULL, 'L'},
3812                 {"embed",       no_argument,            NULL, 'e'},
3813                 {"resume",      required_argument,      NULL, 't'},
3814                 {"compressed",  no_argument,            NULL, 'c'},
3815                 {0, 0, 0, 0}
3816         };
3817
3818         /* check options */
3819         while ((c = getopt_long(argc, argv, ":i:I:RbDpVvnPLet:c", long_options,
3820             NULL)) != -1) {
3821                 switch (c) {
3822                 case 'i':
3823                         if (fromname)
3824                                 usage(B_FALSE);
3825                         fromname = optarg;
3826                         break;
3827                 case 'I':
3828                         if (fromname)
3829                                 usage(B_FALSE);
3830                         fromname = optarg;
3831                         flags.doall = B_TRUE;
3832                         break;
3833                 case 'R':
3834                         flags.replicate = B_TRUE;
3835                         break;
3836                 case 'p':
3837                         flags.props = B_TRUE;
3838                         break;
3839                 case 'P':
3840                         flags.parsable = B_TRUE;
3841                         flags.verbose = B_TRUE;
3842                         break;
3843                 case 'V':
3844                         flags.progress = B_TRUE;
3845                         flags.progressastitle = B_TRUE;
3846                         break;
3847                 case 'v':
3848                         if (flags.verbose)
3849                                 extraverbose = B_TRUE;
3850                         flags.verbose = B_TRUE;
3851                         flags.progress = B_TRUE;
3852                         break;
3853                 case 'D':
3854                         flags.dedup = B_TRUE;
3855                         break;
3856                 case 'n':
3857                         flags.dryrun = B_TRUE;
3858                         break;
3859                 case 'L':
3860                         flags.largeblock = B_TRUE;
3861                         break;
3862                 case 'e':
3863                         flags.embed_data = B_TRUE;
3864                         break;
3865                 case 't':
3866                         resume_token = optarg;
3867                         break;
3868                 case 'c':
3869                         flags.compress = B_TRUE;
3870                         break;
3871                 case ':':
3872                         (void) fprintf(stderr, gettext("missing argument for "
3873                             "'%c' option\n"), optopt);
3874                         usage(B_FALSE);
3875                         break;
3876                 case '?':
3877                         /*FALLTHROUGH*/
3878                 default:
3879                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3880                             optopt);
3881                         usage(B_FALSE);
3882                 }
3883         }
3884
3885         argc -= optind;
3886         argv += optind;
3887
3888         if (resume_token != NULL) {
3889                 if (fromname != NULL || flags.replicate || flags.props ||
3890                     flags.dedup) {
3891                         (void) fprintf(stderr,
3892                             gettext("invalid flags combined with -t\n"));
3893                         usage(B_FALSE);
3894                 }
3895                 if (argc != 0) {
3896                         (void) fprintf(stderr, gettext("no additional "
3897                             "arguments are permitted with -t\n"));
3898                         usage(B_FALSE);
3899                 }
3900         } else {
3901                 if (argc < 1) {
3902                         (void) fprintf(stderr,
3903                             gettext("missing snapshot argument\n"));
3904                         usage(B_FALSE);
3905                 }
3906                 if (argc > 1) {
3907                         (void) fprintf(stderr, gettext("too many arguments\n"));
3908                         usage(B_FALSE);
3909                 }
3910         }
3911
3912         if (!flags.dryrun && isatty(STDOUT_FILENO)) {
3913                 (void) fprintf(stderr,
3914                     gettext("Error: Stream can not be written to a terminal.\n"
3915                     "You must redirect standard output.\n"));
3916                 return (1);
3917         }
3918
3919         if (resume_token != NULL) {
3920                 return (zfs_send_resume(g_zfs, &flags, STDOUT_FILENO,
3921                     resume_token));
3922         }
3923
3924         /*
3925          * Special case sending a filesystem, or from a bookmark.
3926          */
3927         if (strchr(argv[0], '@') == NULL ||
3928             (fromname && strchr(fromname, '#') != NULL)) {
3929                 char frombuf[ZFS_MAX_DATASET_NAME_LEN];
3930                 enum lzc_send_flags lzc_flags = 0;
3931
3932                 if (flags.replicate || flags.doall || flags.props ||
3933                     flags.dedup || flags.dryrun || flags.verbose ||
3934                     flags.progress) {
3935                         (void) fprintf(stderr,
3936                             gettext("Error: "
3937                             "Unsupported flag with filesystem or bookmark.\n"));
3938                         return (1);
3939                 }
3940
3941                 zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET);
3942                 if (zhp == NULL)
3943                         return (1);
3944
3945                 if (flags.largeblock)
3946                         lzc_flags |= LZC_SEND_FLAG_LARGE_BLOCK;
3947                 if (flags.embed_data)
3948                         lzc_flags |= LZC_SEND_FLAG_EMBED_DATA;
3949                 if (flags.compress)
3950                         lzc_flags |= LZC_SEND_FLAG_COMPRESS;
3951
3952                 if (fromname != NULL &&
3953                     (fromname[0] == '#' || fromname[0] == '@')) {
3954                         /*
3955                          * Incremental source name begins with # or @.
3956                          * Default to same fs as target.
3957                          */
3958                         (void) strncpy(frombuf, argv[0], sizeof (frombuf));
3959                         cp = strchr(frombuf, '@');
3960                         if (cp != NULL)
3961                                 *cp = '\0';
3962                         (void) strlcat(frombuf, fromname, sizeof (frombuf));
3963                         fromname = frombuf;
3964                 }
3965                 err = zfs_send_one(zhp, fromname, STDOUT_FILENO, lzc_flags);
3966                 zfs_close(zhp);
3967                 return (err != 0);
3968         }
3969
3970         cp = strchr(argv[0], '@');
3971         *cp = '\0';
3972         toname = cp + 1;
3973         zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3974         if (zhp == NULL)
3975                 return (1);
3976
3977         /*
3978          * If they specified the full path to the snapshot, chop off
3979          * everything except the short name of the snapshot, but special
3980          * case if they specify the origin.
3981          */
3982         if (fromname && (cp = strchr(fromname, '@')) != NULL) {
3983                 char origin[ZFS_MAX_DATASET_NAME_LEN];
3984                 zprop_source_t src;
3985
3986                 (void) zfs_prop_get(zhp, ZFS_PROP_ORIGIN,
3987                     origin, sizeof (origin), &src, NULL, 0, B_FALSE);
3988
3989                 if (strcmp(origin, fromname) == 0) {
3990                         fromname = NULL;
3991                         flags.fromorigin = B_TRUE;
3992                 } else {
3993                         *cp = '\0';
3994                         if (cp != fromname && strcmp(argv[0], fromname)) {
3995                                 (void) fprintf(stderr,
3996                                     gettext("incremental source must be "
3997                                     "in same filesystem\n"));
3998                                 usage(B_FALSE);
3999                         }
4000                         fromname = cp + 1;
4001                         if (strchr(fromname, '@') || strchr(fromname, '/')) {
4002                                 (void) fprintf(stderr,
4003                                     gettext("invalid incremental source\n"));
4004                                 usage(B_FALSE);
4005                         }
4006                 }
4007         }
4008
4009         if (flags.replicate && fromname == NULL)
4010                 flags.doall = B_TRUE;
4011
4012         err = zfs_send(zhp, fromname, toname, &flags, STDOUT_FILENO, NULL, 0,
4013             extraverbose ? &dbgnv : NULL);
4014
4015         if (extraverbose && dbgnv != NULL) {
4016                 /*
4017                  * dump_nvlist prints to stdout, but that's been
4018                  * redirected to a file.  Make it print to stderr
4019                  * instead.
4020                  */
4021                 (void) dup2(STDERR_FILENO, STDOUT_FILENO);
4022                 dump_nvlist(dbgnv, 0);
4023                 nvlist_free(dbgnv);
4024         }
4025         zfs_close(zhp);
4026
4027         return (err != 0);
4028 }
4029
4030 /*
4031  * Restore a backup stream from stdin.
4032  */
4033 static int
4034 zfs_do_receive(int argc, char **argv)
4035 {
4036         int c, err = 0;
4037         recvflags_t flags = { 0 };
4038         boolean_t abort_resumable = B_FALSE;
4039
4040         nvlist_t *props;
4041         nvpair_t *nvp = NULL;
4042
4043         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
4044                 nomem();
4045
4046         /* check options */
4047         while ((c = getopt(argc, argv, ":o:denuvFsA")) != -1) {
4048                 switch (c) {
4049                 case 'o':
4050                         if (parseprop(props, optarg) != 0)
4051                                 return (1);
4052                         break;
4053                 case 'd':
4054                         flags.isprefix = B_TRUE;
4055                         break;
4056                 case 'e':
4057                         flags.isprefix = B_TRUE;
4058                         flags.istail = B_TRUE;
4059                         break;
4060                 case 'n':
4061                         flags.dryrun = B_TRUE;
4062                         break;
4063                 case 'u':
4064                         flags.nomount = B_TRUE;
4065                         break;
4066                 case 'v':
4067                         flags.verbose = B_TRUE;
4068                         break;
4069                 case 's':
4070                         flags.resumable = B_TRUE;
4071                         break;
4072                 case 'F':
4073                         flags.force = B_TRUE;
4074                         break;
4075                 case 'A':
4076                         abort_resumable = B_TRUE;
4077                         break;
4078                 case ':':
4079                         (void) fprintf(stderr, gettext("missing argument for "
4080                             "'%c' option\n"), optopt);
4081                         usage(B_FALSE);
4082                         break;
4083                 case '?':
4084                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
4085                             optopt);
4086                         usage(B_FALSE);
4087                 }
4088         }
4089
4090         argc -= optind;
4091         argv += optind;
4092
4093         /* check number of arguments */
4094         if (argc < 1) {
4095                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
4096                 usage(B_FALSE);
4097         }
4098         if (argc > 1) {
4099                 (void) fprintf(stderr, gettext("too many arguments\n"));
4100                 usage(B_FALSE);
4101         }
4102
4103         while ((nvp = nvlist_next_nvpair(props, nvp))) {
4104                 if (strcmp(nvpair_name(nvp), "origin") != 0) {
4105                         (void) fprintf(stderr, gettext("invalid option"));
4106                         usage(B_FALSE);
4107                 }
4108         }
4109
4110         if (abort_resumable) {
4111                 if (flags.isprefix || flags.istail || flags.dryrun ||
4112                     flags.resumable || flags.nomount) {
4113                         (void) fprintf(stderr, gettext("invalid option"));
4114                         usage(B_FALSE);
4115                 }
4116
4117                 char namebuf[ZFS_MAX_DATASET_NAME_LEN];
4118                 (void) snprintf(namebuf, sizeof (namebuf),
4119                     "%s/%%recv", argv[0]);
4120
4121                 if (zfs_dataset_exists(g_zfs, namebuf,
4122                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME)) {
4123                         zfs_handle_t *zhp = zfs_open(g_zfs,
4124                             namebuf, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
4125                         if (zhp == NULL)
4126                                 return (1);
4127                         err = zfs_destroy(zhp, B_FALSE);
4128                 } else {
4129                         zfs_handle_t *zhp = zfs_open(g_zfs,
4130                             argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
4131                         if (zhp == NULL)
4132                                 usage(B_FALSE);
4133                         if (!zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) ||
4134                             zfs_prop_get(zhp, ZFS_PROP_RECEIVE_RESUME_TOKEN,
4135                             NULL, 0, NULL, NULL, 0, B_TRUE) == -1) {
4136                                 (void) fprintf(stderr,
4137                                     gettext("'%s' does not have any "
4138                                     "resumable receive state to abort\n"),
4139                                     argv[0]);
4140                                 return (1);
4141                         }
4142                         err = zfs_destroy(zhp, B_FALSE);
4143                 }
4144
4145                 return (err != 0);
4146         }
4147
4148         if (isatty(STDIN_FILENO)) {
4149                 (void) fprintf(stderr,
4150                     gettext("Error: Backup stream can not be read "
4151                     "from a terminal.\n"
4152                     "You must redirect standard input.\n"));
4153                 return (1);
4154         }
4155         err = zfs_receive(g_zfs, argv[0], props, &flags, STDIN_FILENO, NULL);
4156
4157         return (err != 0);
4158 }
4159
4160 /*
4161  * allow/unallow stuff
4162  */
4163 /* copied from zfs/sys/dsl_deleg.h */
4164 #define ZFS_DELEG_PERM_CREATE           "create"
4165 #define ZFS_DELEG_PERM_DESTROY          "destroy"
4166 #define ZFS_DELEG_PERM_SNAPSHOT         "snapshot"
4167 #define ZFS_DELEG_PERM_ROLLBACK         "rollback"
4168 #define ZFS_DELEG_PERM_CLONE            "clone"
4169 #define ZFS_DELEG_PERM_PROMOTE          "promote"
4170 #define ZFS_DELEG_PERM_RENAME           "rename"
4171 #define ZFS_DELEG_PERM_MOUNT            "mount"
4172 #define ZFS_DELEG_PERM_SHARE            "share"
4173 #define ZFS_DELEG_PERM_SEND             "send"
4174 #define ZFS_DELEG_PERM_RECEIVE          "receive"
4175 #define ZFS_DELEG_PERM_ALLOW            "allow"
4176 #define ZFS_DELEG_PERM_USERPROP         "userprop"
4177 #define ZFS_DELEG_PERM_VSCAN            "vscan" /* ??? */
4178 #define ZFS_DELEG_PERM_USERQUOTA        "userquota"
4179 #define ZFS_DELEG_PERM_GROUPQUOTA       "groupquota"
4180 #define ZFS_DELEG_PERM_USERUSED         "userused"
4181 #define ZFS_DELEG_PERM_GROUPUSED        "groupused"
4182 #define ZFS_DELEG_PERM_HOLD             "hold"
4183 #define ZFS_DELEG_PERM_RELEASE          "release"
4184 #define ZFS_DELEG_PERM_DIFF             "diff"
4185 #define ZFS_DELEG_PERM_BOOKMARK         "bookmark"
4186 #define ZFS_DELEG_PERM_REMAP            "remap"
4187
4188 #define ZFS_NUM_DELEG_NOTES ZFS_DELEG_NOTE_NONE
4189
4190 static zfs_deleg_perm_tab_t zfs_deleg_perm_tbl[] = {
4191         { ZFS_DELEG_PERM_ALLOW, ZFS_DELEG_NOTE_ALLOW },
4192         { ZFS_DELEG_PERM_CLONE, ZFS_DELEG_NOTE_CLONE },
4193         { ZFS_DELEG_PERM_CREATE, ZFS_DELEG_NOTE_CREATE },
4194         { ZFS_DELEG_PERM_DESTROY, ZFS_DELEG_NOTE_DESTROY },
4195         { ZFS_DELEG_PERM_DIFF, ZFS_DELEG_NOTE_DIFF},
4196         { ZFS_DELEG_PERM_HOLD, ZFS_DELEG_NOTE_HOLD },
4197         { ZFS_DELEG_PERM_MOUNT, ZFS_DELEG_NOTE_MOUNT },
4198         { ZFS_DELEG_PERM_PROMOTE, ZFS_DELEG_NOTE_PROMOTE },
4199         { ZFS_DELEG_PERM_RECEIVE, ZFS_DELEG_NOTE_RECEIVE },
4200         { ZFS_DELEG_PERM_RELEASE, ZFS_DELEG_NOTE_RELEASE },
4201         { ZFS_DELEG_PERM_RENAME, ZFS_DELEG_NOTE_RENAME },
4202         { ZFS_DELEG_PERM_ROLLBACK, ZFS_DELEG_NOTE_ROLLBACK },
4203         { ZFS_DELEG_PERM_SEND, ZFS_DELEG_NOTE_SEND },
4204         { ZFS_DELEG_PERM_SHARE, ZFS_DELEG_NOTE_SHARE },
4205         { ZFS_DELEG_PERM_SNAPSHOT, ZFS_DELEG_NOTE_SNAPSHOT },
4206         { ZFS_DELEG_PERM_BOOKMARK, ZFS_DELEG_NOTE_BOOKMARK },
4207         { ZFS_DELEG_PERM_REMAP, ZFS_DELEG_NOTE_REMAP },
4208
4209         { ZFS_DELEG_PERM_GROUPQUOTA, ZFS_DELEG_NOTE_GROUPQUOTA },
4210         { ZFS_DELEG_PERM_GROUPUSED, ZFS_DELEG_NOTE_GROUPUSED },
4211         { ZFS_DELEG_PERM_USERPROP, ZFS_DELEG_NOTE_USERPROP },
4212         { ZFS_DELEG_PERM_USERQUOTA, ZFS_DELEG_NOTE_USERQUOTA },
4213         { ZFS_DELEG_PERM_USERUSED, ZFS_DELEG_NOTE_USERUSED },
4214         { NULL, ZFS_DELEG_NOTE_NONE }
4215 };
4216
4217 /* permission structure */
4218 typedef struct deleg_perm {
4219         zfs_deleg_who_type_t    dp_who_type;
4220         const char              *dp_name;
4221         boolean_t               dp_local;
4222         boolean_t               dp_descend;
4223 } deleg_perm_t;
4224
4225 /* */
4226 typedef struct deleg_perm_node {
4227         deleg_perm_t            dpn_perm;
4228
4229         uu_avl_node_t           dpn_avl_node;
4230 } deleg_perm_node_t;
4231
4232 typedef struct fs_perm fs_perm_t;
4233
4234 /* permissions set */
4235 typedef struct who_perm {
4236         zfs_deleg_who_type_t    who_type;
4237         const char              *who_name;              /* id */
4238         char                    who_ug_name[256];       /* user/group name */
4239         fs_perm_t               *who_fsperm;            /* uplink */
4240
4241         uu_avl_t                *who_deleg_perm_avl;    /* permissions */
4242 } who_perm_t;
4243
4244 /* */
4245 typedef struct who_perm_node {
4246         who_perm_t      who_perm;
4247         uu_avl_node_t   who_avl_node;
4248 } who_perm_node_t;
4249
4250 typedef struct fs_perm_set fs_perm_set_t;
4251 /* fs permissions */
4252 struct fs_perm {
4253         const char              *fsp_name;
4254
4255         uu_avl_t                *fsp_sc_avl;    /* sets,create */
4256         uu_avl_t                *fsp_uge_avl;   /* user,group,everyone */
4257
4258         fs_perm_set_t           *fsp_set;       /* uplink */
4259 };
4260
4261 /* */
4262 typedef struct fs_perm_node {
4263         fs_perm_t       fspn_fsperm;
4264         uu_avl_t        *fspn_avl;
4265
4266         uu_list_node_t  fspn_list_node;
4267 } fs_perm_node_t;
4268
4269 /* top level structure */
4270 struct fs_perm_set {
4271         uu_list_pool_t  *fsps_list_pool;
4272         uu_list_t       *fsps_list; /* list of fs_perms */
4273
4274         uu_avl_pool_t   *fsps_named_set_avl_pool;
4275         uu_avl_pool_t   *fsps_who_perm_avl_pool;
4276         uu_avl_pool_t   *fsps_deleg_perm_avl_pool;
4277 };
4278
4279 static inline const char *
4280 deleg_perm_type(zfs_deleg_note_t note)
4281 {
4282         /* subcommands */
4283         switch (note) {
4284                 /* SUBCOMMANDS */
4285                 /* OTHER */
4286         case ZFS_DELEG_NOTE_GROUPQUOTA:
4287         case ZFS_DELEG_NOTE_GROUPUSED:
4288         case ZFS_DELEG_NOTE_USERPROP:
4289         case ZFS_DELEG_NOTE_USERQUOTA:
4290         case ZFS_DELEG_NOTE_USERUSED:
4291                 /* other */
4292                 return (gettext("other"));
4293         default:
4294                 return (gettext("subcommand"));
4295         }
4296 }
4297
4298 static int
4299 who_type2weight(zfs_deleg_who_type_t who_type)
4300 {
4301         int res;
4302         switch (who_type) {
4303                 case ZFS_DELEG_NAMED_SET_SETS:
4304                 case ZFS_DELEG_NAMED_SET:
4305                         res = 0;
4306                         break;
4307                 case ZFS_DELEG_CREATE_SETS:
4308                 case ZFS_DELEG_CREATE:
4309                         res = 1;
4310                         break;
4311                 case ZFS_DELEG_USER_SETS:
4312                 case ZFS_DELEG_USER:
4313                         res = 2;
4314                         break;
4315                 case ZFS_DELEG_GROUP_SETS:
4316                 case ZFS_DELEG_GROUP:
4317                         res = 3;
4318                         break;
4319                 case ZFS_DELEG_EVERYONE_SETS:
4320                 case ZFS_DELEG_EVERYONE:
4321                         res = 4;
4322                         break;
4323                 default:
4324                         res = -1;
4325         }
4326
4327         return (res);
4328 }
4329
4330 /* ARGSUSED */
4331 static int
4332 who_perm_compare(const void *larg, const void *rarg, void *unused)
4333 {
4334         const who_perm_node_t *l = larg;
4335         const who_perm_node_t *r = rarg;
4336         zfs_deleg_who_type_t ltype = l->who_perm.who_type;
4337         zfs_deleg_who_type_t rtype = r->who_perm.who_type;
4338         int lweight = who_type2weight(ltype);
4339         int rweight = who_type2weight(rtype);
4340         int res = lweight - rweight;
4341         if (res == 0)
4342                 res = strncmp(l->who_perm.who_name, r->who_perm.who_name,
4343                     ZFS_MAX_DELEG_NAME-1);
4344
4345         if (res == 0)
4346                 return (0);
4347         if (res > 0)
4348                 return (1);
4349         else
4350                 return (-1);
4351 }
4352
4353 /* ARGSUSED */
4354 static int
4355 deleg_perm_compare(const void *larg, const void *rarg, void *unused)
4356 {
4357         const deleg_perm_node_t *l = larg;
4358         const deleg_perm_node_t *r = rarg;
4359         int res =  strncmp(l->dpn_perm.dp_name, r->dpn_perm.dp_name,
4360             ZFS_MAX_DELEG_NAME-1);
4361
4362         if (res == 0)
4363                 return (0);
4364
4365         if (res > 0)
4366                 return (1);
4367         else
4368                 return (-1);
4369 }
4370
4371 static inline void
4372 fs_perm_set_init(fs_perm_set_t *fspset)
4373 {
4374         bzero(fspset, sizeof (fs_perm_set_t));
4375
4376         if ((fspset->fsps_list_pool = uu_list_pool_create("fsps_list_pool",
4377             sizeof (fs_perm_node_t), offsetof(fs_perm_node_t, fspn_list_node),
4378             NULL, UU_DEFAULT)) == NULL)
4379                 nomem();
4380         if ((fspset->fsps_list = uu_list_create(fspset->fsps_list_pool, NULL,
4381             UU_DEFAULT)) == NULL)
4382                 nomem();
4383
4384         if ((fspset->fsps_named_set_avl_pool = uu_avl_pool_create(
4385             "named_set_avl_pool", sizeof (who_perm_node_t), offsetof(
4386             who_perm_node_t, who_avl_node), who_perm_compare,
4387             UU_DEFAULT)) == NULL)
4388                 nomem();
4389
4390         if ((fspset->fsps_who_perm_avl_pool = uu_avl_pool_create(
4391             "who_perm_avl_pool", sizeof (who_perm_node_t), offsetof(
4392             who_perm_node_t, who_avl_node), who_perm_compare,
4393             UU_DEFAULT)) == NULL)
4394                 nomem();
4395
4396         if ((fspset->fsps_deleg_perm_avl_pool = uu_avl_pool_create(
4397             "deleg_perm_avl_pool", sizeof (deleg_perm_node_t), offsetof(
4398             deleg_perm_node_t, dpn_avl_node), deleg_perm_compare, UU_DEFAULT))
4399             == NULL)
4400                 nomem();
4401 }
4402
4403 static inline void fs_perm_fini(fs_perm_t *);
4404 static inline void who_perm_fini(who_perm_t *);
4405
4406 static inline void
4407 fs_perm_set_fini(fs_perm_set_t *fspset)
4408 {
4409         fs_perm_node_t *node = uu_list_first(fspset->fsps_list);
4410
4411         while (node != NULL) {
4412                 fs_perm_node_t *next_node =
4413                     uu_list_next(fspset->fsps_list, node);
4414                 fs_perm_t *fsperm = &node->fspn_fsperm;
4415                 fs_perm_fini(fsperm);
4416                 uu_list_remove(fspset->fsps_list, node);
4417                 free(node);
4418                 node = next_node;
4419         }
4420
4421         uu_avl_pool_destroy(fspset->fsps_named_set_avl_pool);
4422         uu_avl_pool_destroy(fspset->fsps_who_perm_avl_pool);
4423         uu_avl_pool_destroy(fspset->fsps_deleg_perm_avl_pool);
4424 }
4425
4426 static inline void
4427 deleg_perm_init(deleg_perm_t *deleg_perm, zfs_deleg_who_type_t type,
4428     const char *name)
4429 {
4430         deleg_perm->dp_who_type = type;
4431         deleg_perm->dp_name = name;
4432 }
4433
4434 static inline void
4435 who_perm_init(who_perm_t *who_perm, fs_perm_t *fsperm,
4436     zfs_deleg_who_type_t type, const char *name)
4437 {
4438         uu_avl_pool_t   *pool;
4439         pool = fsperm->fsp_set->fsps_deleg_perm_avl_pool;
4440
4441         bzero(who_perm, sizeof (who_perm_t));
4442
4443         if ((who_perm->who_deleg_perm_avl = uu_avl_create(pool, NULL,
4444             UU_DEFAULT)) == NULL)
4445                 nomem();
4446
4447         who_perm->who_type = type;
4448         who_perm->who_name = name;
4449         who_perm->who_fsperm = fsperm;
4450 }
4451
4452 static inline void
4453 who_perm_fini(who_perm_t *who_perm)
4454 {
4455         deleg_perm_node_t *node = uu_avl_first(who_perm->who_deleg_perm_avl);
4456
4457         while (node != NULL) {
4458                 deleg_perm_node_t *next_node =
4459                     uu_avl_next(who_perm->who_deleg_perm_avl, node);
4460
4461                 uu_avl_remove(who_perm->who_deleg_perm_avl, node);
4462                 free(node);
4463                 node = next_node;
4464         }
4465
4466         uu_avl_destroy(who_perm->who_deleg_perm_avl);
4467 }
4468
4469 static inline void
4470 fs_perm_init(fs_perm_t *fsperm, fs_perm_set_t *fspset, const char *fsname)
4471 {
4472         uu_avl_pool_t   *nset_pool = fspset->fsps_named_set_avl_pool;
4473         uu_avl_pool_t   *who_pool = fspset->fsps_who_perm_avl_pool;
4474
4475         bzero(fsperm, sizeof (fs_perm_t));
4476
4477         if ((fsperm->fsp_sc_avl = uu_avl_create(nset_pool, NULL, UU_DEFAULT))
4478             == NULL)
4479                 nomem();
4480
4481         if ((fsperm->fsp_uge_avl = uu_avl_create(who_pool, NULL, UU_DEFAULT))
4482             == NULL)
4483                 nomem();
4484
4485         fsperm->fsp_set = fspset;
4486         fsperm->fsp_name = fsname;
4487 }
4488
4489 static inline void
4490 fs_perm_fini(fs_perm_t *fsperm)
4491 {
4492         who_perm_node_t *node = uu_avl_first(fsperm->fsp_sc_avl);
4493         while (node != NULL) {
4494                 who_perm_node_t *next_node = uu_avl_next(fsperm->fsp_sc_avl,
4495                     node);
4496                 who_perm_t *who_perm = &node->who_perm;
4497                 who_perm_fini(who_perm);
4498                 uu_avl_remove(fsperm->fsp_sc_avl, node);
4499                 free(node);
4500                 node = next_node;
4501         }
4502
4503         node = uu_avl_first(fsperm->fsp_uge_avl);
4504         while (node != NULL) {
4505                 who_perm_node_t *next_node = uu_avl_next(fsperm->fsp_uge_avl,
4506                     node);
4507                 who_perm_t *who_perm = &node->who_perm;
4508                 who_perm_fini(who_perm);
4509                 uu_avl_remove(fsperm->fsp_uge_avl, node);
4510                 free(node);
4511                 node = next_node;
4512         }
4513
4514         uu_avl_destroy(fsperm->fsp_sc_avl);
4515         uu_avl_destroy(fsperm->fsp_uge_avl);
4516 }
4517
4518 static void
4519 set_deleg_perm_node(uu_avl_t *avl, deleg_perm_node_t *node,
4520     zfs_deleg_who_type_t who_type, const char *name, char locality)
4521 {
4522         uu_avl_index_t idx = 0;
4523
4524         deleg_perm_node_t *found_node = NULL;
4525         deleg_perm_t    *deleg_perm = &node->dpn_perm;
4526
4527         deleg_perm_init(deleg_perm, who_type, name);
4528
4529         if ((found_node = uu_avl_find(avl, node, NULL, &idx))
4530             == NULL)
4531                 uu_avl_insert(avl, node, idx);
4532         else {
4533                 node = found_node;
4534                 deleg_perm = &node->dpn_perm;
4535         }
4536
4537
4538         switch (locality) {
4539         case ZFS_DELEG_LOCAL:
4540                 deleg_perm->dp_local = B_TRUE;
4541                 break;
4542         case ZFS_DELEG_DESCENDENT:
4543                 deleg_perm->dp_descend = B_TRUE;
4544                 break;
4545         case ZFS_DELEG_NA:
4546                 break;
4547         default:
4548                 assert(B_FALSE); /* invalid locality */
4549         }
4550 }
4551
4552 static inline int
4553 parse_who_perm(who_perm_t *who_perm, nvlist_t *nvl, char locality)
4554 {
4555         nvpair_t *nvp = NULL;
4556         fs_perm_set_t *fspset = who_perm->who_fsperm->fsp_set;
4557         uu_avl_t *avl = who_perm->who_deleg_perm_avl;
4558         zfs_deleg_who_type_t who_type = who_perm->who_type;
4559
4560         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4561                 const char *name = nvpair_name(nvp);
4562                 data_type_t type = nvpair_type(nvp);
4563                 uu_avl_pool_t *avl_pool = fspset->fsps_deleg_perm_avl_pool;
4564                 deleg_perm_node_t *node =
4565                     safe_malloc(sizeof (deleg_perm_node_t));
4566
4567                 assert(type == DATA_TYPE_BOOLEAN);
4568
4569                 uu_avl_node_init(node, &node->dpn_avl_node, avl_pool);
4570                 set_deleg_perm_node(avl, node, who_type, name, locality);
4571         }
4572
4573         return (0);
4574 }
4575
4576 static inline int
4577 parse_fs_perm(fs_perm_t *fsperm, nvlist_t *nvl)
4578 {
4579         nvpair_t *nvp = NULL;
4580         fs_perm_set_t *fspset = fsperm->fsp_set;
4581
4582         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4583                 nvlist_t *nvl2 = NULL;
4584                 const char *name = nvpair_name(nvp);
4585                 uu_avl_t *avl = NULL;
4586                 uu_avl_pool_t *avl_pool = NULL;
4587                 zfs_deleg_who_type_t perm_type = name[0];
4588                 char perm_locality = name[1];
4589                 const char *perm_name = name + 3;
4590                 boolean_t is_set = B_TRUE;
4591                 who_perm_t *who_perm = NULL;
4592
4593                 assert('$' == name[2]);
4594
4595                 if (nvpair_value_nvlist(nvp, &nvl2) != 0)
4596                         return (-1);
4597
4598                 switch (perm_type) {
4599                 case ZFS_DELEG_CREATE:
4600                 case ZFS_DELEG_CREATE_SETS:
4601                 case ZFS_DELEG_NAMED_SET:
4602                 case ZFS_DELEG_NAMED_SET_SETS:
4603                         avl_pool = fspset->fsps_named_set_avl_pool;
4604                         avl = fsperm->fsp_sc_avl;
4605                         break;
4606                 case ZFS_DELEG_USER:
4607                 case ZFS_DELEG_USER_SETS:
4608                 case ZFS_DELEG_GROUP:
4609                 case ZFS_DELEG_GROUP_SETS:
4610                 case ZFS_DELEG_EVERYONE:
4611                 case ZFS_DELEG_EVERYONE_SETS:
4612                         avl_pool = fspset->fsps_who_perm_avl_pool;
4613                         avl = fsperm->fsp_uge_avl;
4614                         break;
4615
4616                 default:
4617                         assert(!"unhandled zfs_deleg_who_type_t");
4618                 }
4619
4620                 if (is_set) {
4621                         who_perm_node_t *found_node = NULL;
4622                         who_perm_node_t *node = safe_malloc(
4623                             sizeof (who_perm_node_t));
4624                         who_perm = &node->who_perm;
4625                         uu_avl_index_t idx = 0;
4626
4627                         uu_avl_node_init(node, &node->who_avl_node, avl_pool);
4628                         who_perm_init(who_perm, fsperm, perm_type, perm_name);
4629
4630                         if ((found_node = uu_avl_find(avl, node, NULL, &idx))
4631                             == NULL) {
4632                                 if (avl == fsperm->fsp_uge_avl) {
4633                                         uid_t rid = 0;
4634                                         struct passwd *p = NULL;
4635                                         struct group *g = NULL;
4636                                         const char *nice_name = NULL;
4637
4638                                         switch (perm_type) {
4639                                         case ZFS_DELEG_USER_SETS:
4640                                         case ZFS_DELEG_USER:
4641                                                 rid = atoi(perm_name);
4642                                                 p = getpwuid(rid);
4643                                                 if (p)
4644                                                         nice_name = p->pw_name;
4645                                                 break;
4646                                         case ZFS_DELEG_GROUP_SETS:
4647                                         case ZFS_DELEG_GROUP:
4648                                                 rid = atoi(perm_name);
4649                                                 g = getgrgid(rid);
4650                                                 if (g)
4651                                                         nice_name = g->gr_name;
4652                                                 break;
4653
4654                                         default:
4655                                                 break;
4656                                         }
4657
4658                                         if (nice_name != NULL)
4659                                                 (void) strlcpy(
4660                                                     node->who_perm.who_ug_name,
4661                                                     nice_name, 256);
4662                                 }
4663
4664                                 uu_avl_insert(avl, node, idx);
4665                         } else {
4666                                 node = found_node;
4667                                 who_perm = &node->who_perm;
4668                         }
4669                 }
4670
4671                 (void) parse_who_perm(who_perm, nvl2, perm_locality);
4672         }
4673
4674         return (0);
4675 }
4676
4677 static inline int
4678 parse_fs_perm_set(fs_perm_set_t *fspset, nvlist_t *nvl)
4679 {
4680         nvpair_t *nvp = NULL;
4681         uu_avl_index_t idx = 0;
4682
4683         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4684                 nvlist_t *nvl2 = NULL;
4685                 const char *fsname = nvpair_name(nvp);
4686                 data_type_t type = nvpair_type(nvp);
4687                 fs_perm_t *fsperm = NULL;
4688                 fs_perm_node_t *node = safe_malloc(sizeof (fs_perm_node_t));
4689                 if (node == NULL)
4690                         nomem();
4691
4692                 fsperm = &node->fspn_fsperm;
4693
4694                 assert(DATA_TYPE_NVLIST == type);
4695
4696                 uu_list_node_init(node, &node->fspn_list_node,
4697                     fspset->fsps_list_pool);
4698
4699                 idx = uu_list_numnodes(fspset->fsps_list);
4700                 fs_perm_init(fsperm, fspset, fsname);
4701
4702                 if (nvpair_value_nvlist(nvp, &nvl2) != 0)
4703                         return (-1);
4704
4705                 (void) parse_fs_perm(fsperm, nvl2);
4706
4707                 uu_list_insert(fspset->fsps_list, node, idx);
4708         }
4709
4710         return (0);
4711 }
4712
4713 static inline const char *
4714 deleg_perm_comment(zfs_deleg_note_t note)
4715 {
4716         const char *str = "";
4717
4718         /* subcommands */
4719         switch (note) {
4720                 /* SUBCOMMANDS */
4721         case ZFS_DELEG_NOTE_ALLOW:
4722                 str = gettext("Must also have the permission that is being"
4723                     "\n\t\t\t\tallowed");
4724                 break;
4725         case ZFS_DELEG_NOTE_CLONE:
4726                 str = gettext("Must also have the 'create' ability and 'mount'"
4727                     "\n\t\t\t\tability in the origin file system");
4728                 break;
4729         case ZFS_DELEG_NOTE_CREATE:
4730                 str = gettext("Must also have the 'mount' ability");
4731                 break;
4732         case ZFS_DELEG_NOTE_DESTROY:
4733                 str = gettext("Must also have the 'mount' ability");
4734                 break;
4735         case ZFS_DELEG_NOTE_DIFF:
4736                 str = gettext("Allows lookup of paths within a dataset;"
4737                     "\n\t\t\t\tgiven an object number. Ordinary users need this"
4738                     "\n\t\t\t\tin order to use zfs diff");
4739                 break;
4740         case ZFS_DELEG_NOTE_HOLD:
4741                 str = gettext("Allows adding a user hold to a snapshot");
4742                 break;
4743         case ZFS_DELEG_NOTE_MOUNT:
4744                 str = gettext("Allows mount/umount of ZFS datasets");
4745                 break;
4746         case ZFS_DELEG_NOTE_PROMOTE:
4747                 str = gettext("Must also have the 'mount'\n\t\t\t\tand"
4748                     " 'promote' ability in the origin file system");
4749                 break;
4750         case ZFS_DELEG_NOTE_RECEIVE:
4751                 str = gettext("Must also have the 'mount' and 'create'"
4752                     " ability");
4753                 break;
4754         case ZFS_DELEG_NOTE_RELEASE:
4755                 str = gettext("Allows releasing a user hold which\n\t\t\t\t"
4756                     "might destroy the snapshot");
4757                 break;
4758         case ZFS_DELEG_NOTE_RENAME:
4759                 str = gettext("Must also have the 'mount' and 'create'"
4760                     "\n\t\t\t\tability in the new parent");
4761                 break;
4762         case ZFS_DELEG_NOTE_ROLLBACK:
4763                 str = gettext("");
4764                 break;
4765         case ZFS_DELEG_NOTE_SEND:
4766                 str = gettext("");
4767                 break;
4768         case ZFS_DELEG_NOTE_SHARE:
4769                 str = gettext("Allows sharing file systems over NFS or SMB"
4770                     "\n\t\t\t\tprotocols");
4771                 break;
4772         case ZFS_DELEG_NOTE_SNAPSHOT:
4773                 str = gettext("");
4774                 break;
4775 /*
4776  *      case ZFS_DELEG_NOTE_VSCAN:
4777  *              str = gettext("");
4778  *              break;
4779  */
4780                 /* OTHER */
4781         case ZFS_DELEG_NOTE_GROUPQUOTA:
4782                 str = gettext("Allows accessing any groupquota@... property");
4783                 break;
4784         case ZFS_DELEG_NOTE_GROUPUSED:
4785                 str = gettext("Allows reading any groupused@... property");
4786                 break;
4787         case ZFS_DELEG_NOTE_USERPROP:
4788                 str = gettext("Allows changing any user property");
4789                 break;
4790         case ZFS_DELEG_NOTE_USERQUOTA:
4791                 str = gettext("Allows accessing any userquota@... property");
4792                 break;
4793         case ZFS_DELEG_NOTE_USERUSED:
4794                 str = gettext("Allows reading any userused@... property");
4795                 break;
4796                 /* other */
4797         default:
4798                 str = "";
4799         }
4800
4801         return (str);
4802 }
4803
4804 struct allow_opts {
4805         boolean_t local;
4806         boolean_t descend;
4807         boolean_t user;
4808         boolean_t group;
4809         boolean_t everyone;
4810         boolean_t create;
4811         boolean_t set;
4812         boolean_t recursive; /* unallow only */
4813         boolean_t prt_usage;
4814
4815         boolean_t prt_perms;
4816         char *who;
4817         char *perms;
4818         const char *dataset;
4819 };
4820
4821 static inline int
4822 prop_cmp(const void *a, const void *b)
4823 {
4824         const char *str1 = *(const char **)a;
4825         const char *str2 = *(const char **)b;
4826         return (strcmp(str1, str2));
4827 }
4828
4829 static void
4830 allow_usage(boolean_t un, boolean_t requested, const char *msg)
4831 {
4832         const char *opt_desc[] = {
4833                 "-h", gettext("show this help message and exit"),
4834                 "-l", gettext("set permission locally"),
4835                 "-d", gettext("set permission for descents"),
4836                 "-u", gettext("set permission for user"),
4837                 "-g", gettext("set permission for group"),
4838                 "-e", gettext("set permission for everyone"),
4839                 "-c", gettext("set create time permission"),
4840                 "-s", gettext("define permission set"),
4841                 /* unallow only */
4842                 "-r", gettext("remove permissions recursively"),
4843         };
4844         size_t unallow_size = sizeof (opt_desc) / sizeof (char *);
4845         size_t allow_size = unallow_size - 2;
4846         const char *props[ZFS_NUM_PROPS];
4847         int i;
4848         size_t count = 0;
4849         FILE *fp = requested ? stdout : stderr;
4850         zprop_desc_t *pdtbl = zfs_prop_get_table();
4851         const char *fmt = gettext("%-16s %-14s\t%s\n");
4852
4853         (void) fprintf(fp, gettext("Usage: %s\n"), get_usage(un ? HELP_UNALLOW :
4854             HELP_ALLOW));
4855         (void) fprintf(fp, gettext("Options:\n"));
4856         for (i = 0; i < (un ? unallow_size : allow_size); i++) {
4857                 const char *opt = opt_desc[i++];
4858                 const char *optdsc = opt_desc[i];
4859                 (void) fprintf(fp, gettext("  %-10s  %s\n"), opt, optdsc);
4860         }
4861
4862         (void) fprintf(fp, gettext("\nThe following permissions are "
4863             "supported:\n\n"));
4864         (void) fprintf(fp, fmt, gettext("NAME"), gettext("TYPE"),
4865             gettext("NOTES"));
4866         for (i = 0; i < ZFS_NUM_DELEG_NOTES; i++) {
4867                 const char *perm_name = zfs_deleg_perm_tbl[i].z_perm;
4868                 zfs_deleg_note_t perm_note = zfs_deleg_perm_tbl[i].z_note;
4869                 const char *perm_type = deleg_perm_type(perm_note);
4870                 const char *perm_comment = deleg_perm_comment(perm_note);
4871                 (void) fprintf(fp, fmt, perm_name, perm_type, perm_comment);
4872         }
4873
4874         for (i = 0; i < ZFS_NUM_PROPS; i++) {
4875                 zprop_desc_t *pd = &pdtbl[i];
4876                 if (pd->pd_visible != B_TRUE)
4877                         continue;
4878
4879                 if (pd->pd_attr == PROP_READONLY)
4880                         continue;
4881
4882                 props[count++] = pd->pd_name;
4883         }
4884         props[count] = NULL;
4885
4886         qsort(props, count, sizeof (char *), prop_cmp);
4887
4888         for (i = 0; i < count; i++)
4889                 (void) fprintf(fp, fmt, props[i], gettext("property"), "");
4890
4891         if (msg != NULL)
4892                 (void) fprintf(fp, gettext("\nzfs: error: %s"), msg);
4893
4894         exit(requested ? 0 : 2);
4895 }
4896
4897 static inline const char *
4898 munge_args(int argc, char **argv, boolean_t un, size_t expected_argc,
4899     char **permsp)
4900 {
4901         if (un && argc == expected_argc - 1)
4902                 *permsp = NULL;
4903         else if (argc == expected_argc)
4904                 *permsp = argv[argc - 2];
4905         else
4906                 allow_usage(un, B_FALSE,
4907                     gettext("wrong number of parameters\n"));
4908
4909         return (argv[argc - 1]);
4910 }
4911
4912 static void
4913 parse_allow_args(int argc, char **argv, boolean_t un, struct allow_opts *opts)
4914 {
4915         int uge_sum = opts->user + opts->group + opts->everyone;
4916         int csuge_sum = opts->create + opts->set + uge_sum;
4917         int ldcsuge_sum = csuge_sum + opts->local + opts->descend;
4918         int all_sum = un ? ldcsuge_sum + opts->recursive : ldcsuge_sum;
4919
4920         if (uge_sum > 1)
4921                 allow_usage(un, B_FALSE,
4922                     gettext("-u, -g, and -e are mutually exclusive\n"));
4923
4924         if (opts->prt_usage) {
4925                 if (argc == 0 && all_sum == 0)
4926                         allow_usage(un, B_TRUE, NULL);
4927                 else
4928                         usage(B_FALSE);
4929         }
4930
4931         if (opts->set) {
4932                 if (csuge_sum > 1)
4933                         allow_usage(un, B_FALSE,
4934                             gettext("invalid options combined with -s\n"));
4935
4936                 opts->dataset = munge_args(argc, argv, un, 3, &opts->perms);
4937                 if (argv[0][0] != '@')
4938                         allow_usage(un, B_FALSE,
4939                             gettext("invalid set name: missing '@' prefix\n"));
4940                 opts->who = argv[0];
4941         } else if (opts->create) {
4942                 if (ldcsuge_sum > 1)
4943                         allow_usage(un, B_FALSE,
4944                             gettext("invalid options combined with -c\n"));
4945                 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
4946         } else if (opts->everyone) {
4947                 if (csuge_sum > 1)
4948                         allow_usage(un, B_FALSE,
4949                             gettext("invalid options combined with -e\n"));
4950                 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
4951         } else if (uge_sum == 0 && argc > 0 && strcmp(argv[0], "everyone")
4952             == 0) {
4953                 opts->everyone = B_TRUE;
4954                 argc--;
4955                 argv++;
4956                 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
4957         } else if (argc == 1 && !un) {
4958                 opts->prt_perms = B_TRUE;
4959                 opts->dataset = argv[argc-1];
4960         } else {
4961                 opts->dataset = munge_args(argc, argv, un, 3, &opts->perms);
4962                 opts->who = argv[0];
4963         }
4964
4965         if (!opts->local && !opts->descend) {
4966                 opts->local = B_TRUE;
4967                 opts->descend = B_TRUE;
4968         }
4969 }
4970
4971 static void
4972 store_allow_perm(zfs_deleg_who_type_t type, boolean_t local, boolean_t descend,
4973     const char *who, char *perms, nvlist_t *top_nvl)
4974 {
4975         int i;
4976         char ld[2] = { '\0', '\0' };
4977         char who_buf[MAXNAMELEN + 32];
4978         char base_type = '\0';
4979         char set_type = '\0';
4980         nvlist_t *base_nvl = NULL;
4981         nvlist_t *set_nvl = NULL;
4982         nvlist_t *nvl;
4983
4984         if (nvlist_alloc(&base_nvl, NV_UNIQUE_NAME, 0) != 0)
4985                 nomem();
4986         if (nvlist_alloc(&set_nvl, NV_UNIQUE_NAME, 0) !=  0)
4987                 nomem();
4988
4989         switch (type) {
4990         case ZFS_DELEG_NAMED_SET_SETS:
4991         case ZFS_DELEG_NAMED_SET:
4992                 set_type = ZFS_DELEG_NAMED_SET_SETS;
4993                 base_type = ZFS_DELEG_NAMED_SET;
4994                 ld[0] = ZFS_DELEG_NA;
4995                 break;
4996         case ZFS_DELEG_CREATE_SETS:
4997         case ZFS_DELEG_CREATE:
4998                 set_type = ZFS_DELEG_CREATE_SETS;
4999                 base_type = ZFS_DELEG_CREATE;
5000                 ld[0] = ZFS_DELEG_NA;
5001                 break;
5002         case ZFS_DELEG_USER_SETS:
5003         case ZFS_DELEG_USER:
5004                 set_type = ZFS_DELEG_USER_SETS;
5005                 base_type = ZFS_DELEG_USER;
5006                 if (local)
5007                         ld[0] = ZFS_DELEG_LOCAL;
5008                 if (descend)
5009                         ld[1] = ZFS_DELEG_DESCENDENT;
5010                 break;
5011         case ZFS_DELEG_GROUP_SETS:
5012         case ZFS_DELEG_GROUP:
5013                 set_type = ZFS_DELEG_GROUP_SETS;
5014                 base_type = ZFS_DELEG_GROUP;
5015                 if (local)
5016                         ld[0] = ZFS_DELEG_LOCAL;
5017                 if (descend)
5018                         ld[1] = ZFS_DELEG_DESCENDENT;
5019                 break;
5020         case ZFS_DELEG_EVERYONE_SETS:
5021         case ZFS_DELEG_EVERYONE:
5022                 set_type = ZFS_DELEG_EVERYONE_SETS;
5023                 base_type = ZFS_DELEG_EVERYONE;
5024                 if (local)
5025                         ld[0] = ZFS_DELEG_LOCAL;
5026                 if (descend)
5027                         ld[1] = ZFS_DELEG_DESCENDENT;
5028                 break;
5029
5030         default:
5031                 assert(set_type != '\0' && base_type != '\0');
5032         }
5033
5034         if (perms != NULL) {
5035                 char *curr = perms;
5036                 char *end = curr + strlen(perms);
5037
5038                 while (curr < end) {
5039                         char *delim = strchr(curr, ',');
5040                         if (delim == NULL)
5041                                 delim = end;
5042                         else
5043                                 *delim = '\0';
5044
5045                         if (curr[0] == '@')
5046                                 nvl = set_nvl;
5047                         else
5048                                 nvl = base_nvl;
5049
5050                         (void) nvlist_add_boolean(nvl, curr);
5051                         if (delim != end)
5052                                 *delim = ',';
5053                         curr = delim + 1;
5054                 }
5055
5056                 for (i = 0; i < 2; i++) {
5057                         char locality = ld[i];
5058                         if (locality == 0)
5059                                 continue;
5060
5061                         if (!nvlist_empty(base_nvl)) {
5062                                 if (who != NULL)
5063                                         (void) snprintf(who_buf,
5064                                             sizeof (who_buf), "%c%c$%s",
5065                                             base_type, locality, who);
5066                                 else
5067                                         (void) snprintf(who_buf,
5068                                             sizeof (who_buf), "%c%c$",
5069                                             base_type, locality);
5070
5071                                 (void) nvlist_add_nvlist(top_nvl, who_buf,
5072                                     base_nvl);
5073                         }
5074
5075
5076                         if (!nvlist_empty(set_nvl)) {
5077                                 if (who != NULL)
5078                                         (void) snprintf(who_buf,
5079                                             sizeof (who_buf), "%c%c$%s",
5080                                             set_type, locality, who);
5081                                 else
5082                                         (void) snprintf(who_buf,
5083                                             sizeof (who_buf), "%c%c$",
5084                                             set_type, locality);
5085
5086                                 (void) nvlist_add_nvlist(top_nvl, who_buf,
5087                                     set_nvl);
5088                         }
5089                 }
5090         } else {
5091                 for (i = 0; i < 2; i++) {
5092                         char locality = ld[i];
5093                         if (locality == 0)
5094                                 continue;
5095
5096                         if (who != NULL)
5097                                 (void) snprintf(who_buf, sizeof (who_buf),
5098                                     "%c%c$%s", base_type, locality, who);
5099                         else
5100                                 (void) snprintf(who_buf, sizeof (who_buf),
5101                                     "%c%c$", base_type, locality);
5102                         (void) nvlist_add_boolean(top_nvl, who_buf);
5103
5104                         if (who != NULL)
5105                                 (void) snprintf(who_buf, sizeof (who_buf),
5106                                     "%c%c$%s", set_type, locality, who);
5107                         else
5108                                 (void) snprintf(who_buf, sizeof (who_buf),
5109                                     "%c%c$", set_type, locality);
5110                         (void) nvlist_add_boolean(top_nvl, who_buf);
5111                 }
5112         }
5113 }
5114
5115 static int
5116 construct_fsacl_list(boolean_t un, struct allow_opts *opts, nvlist_t **nvlp)
5117 {
5118         if (nvlist_alloc(nvlp, NV_UNIQUE_NAME, 0) != 0)
5119                 nomem();
5120
5121         if (opts->set) {
5122                 store_allow_perm(ZFS_DELEG_NAMED_SET, opts->local,
5123                     opts->descend, opts->who, opts->perms, *nvlp);
5124         } else if (opts->create) {
5125                 store_allow_perm(ZFS_DELEG_CREATE, opts->local,
5126                     opts->descend, NULL, opts->perms, *nvlp);
5127         } else if (opts->everyone) {
5128                 store_allow_perm(ZFS_DELEG_EVERYONE, opts->local,
5129                     opts->descend, NULL, opts->perms, *nvlp);
5130         } else {
5131                 char *curr = opts->who;
5132                 char *end = curr + strlen(curr);
5133
5134                 while (curr < end) {
5135                         const char *who;
5136                         zfs_deleg_who_type_t who_type = ZFS_DELEG_WHO_UNKNOWN;
5137                         char *endch;
5138                         char *delim = strchr(curr, ',');
5139                         char errbuf[256];
5140                         char id[64];
5141                         struct passwd *p = NULL;
5142                         struct group *g = NULL;
5143
5144                         uid_t rid;
5145                         if (delim == NULL)
5146                                 delim = end;
5147                         else
5148                                 *delim = '\0';
5149
5150                         rid = (uid_t)strtol(curr, &endch, 0);
5151                         if (opts->user) {
5152                                 who_type = ZFS_DELEG_USER;
5153                                 if (*endch != '\0')
5154                                         p = getpwnam(curr);
5155                                 else
5156                                         p = getpwuid(rid);
5157
5158                                 if (p != NULL)
5159                                         rid = p->pw_uid;
5160                                 else {
5161                                         (void) snprintf(errbuf, 256, gettext(
5162                                             "invalid user %s"), curr);
5163                                         allow_usage(un, B_TRUE, errbuf);
5164                                 }
5165                         } else if (opts->group) {
5166                                 who_type = ZFS_DELEG_GROUP;
5167                                 if (*endch != '\0')
5168                                         g = getgrnam(curr);
5169                                 else
5170                                         g = getgrgid(rid);
5171
5172                                 if (g != NULL)
5173                                         rid = g->gr_gid;
5174                                 else {
5175                                         (void) snprintf(errbuf, 256, gettext(
5176                                             "invalid group %s"),  curr);
5177                                         allow_usage(un, B_TRUE, errbuf);
5178                                 }
5179                         } else {
5180                                 if (*endch != '\0') {
5181                                         p = getpwnam(curr);
5182                                 } else {
5183                                         p = getpwuid(rid);
5184                                 }
5185
5186                                 if (p == NULL) {
5187                                         if (*endch != '\0') {
5188                                                 g = getgrnam(curr);
5189                                         } else {
5190                                                 g = getgrgid(rid);
5191                                         }
5192                                 }
5193
5194                                 if (p != NULL) {
5195                                         who_type = ZFS_DELEG_USER;
5196                                         rid = p->pw_uid;
5197                                 } else if (g != NULL) {
5198                                         who_type = ZFS_DELEG_GROUP;
5199                                         rid = g->gr_gid;
5200                                 } else {
5201                                         (void) snprintf(errbuf, 256, gettext(
5202                                             "invalid user/group %s"), curr);
5203                                         allow_usage(un, B_TRUE, errbuf);
5204                                 }
5205                         }
5206
5207                         (void) sprintf(id, "%u", rid);
5208                         who = id;
5209
5210                         store_allow_perm(who_type, opts->local,
5211                             opts->descend, who, opts->perms, *nvlp);
5212                         curr = delim + 1;
5213                 }
5214         }
5215
5216         return (0);
5217 }
5218
5219 static void
5220 print_set_creat_perms(uu_avl_t *who_avl)
5221 {
5222         const char *sc_title[] = {
5223                 gettext("Permission sets:\n"),
5224                 gettext("Create time permissions:\n"),
5225                 NULL
5226         };
5227         const char **title_ptr = sc_title;
5228         who_perm_node_t *who_node = NULL;
5229         int prev_weight = -1;
5230
5231         for (who_node = uu_avl_first(who_avl); who_node != NULL;
5232             who_node = uu_avl_next(who_avl, who_node)) {
5233                 uu_avl_t *avl = who_node->who_perm.who_deleg_perm_avl;
5234                 zfs_deleg_who_type_t who_type = who_node->who_perm.who_type;
5235                 const char *who_name = who_node->who_perm.who_name;
5236                 int weight = who_type2weight(who_type);
5237                 boolean_t first = B_TRUE;
5238                 deleg_perm_node_t *deleg_node;
5239
5240                 if (prev_weight != weight) {
5241                         (void) printf(*title_ptr++);
5242                         prev_weight = weight;
5243                 }
5244
5245                 if (who_name == NULL || strnlen(who_name, 1) == 0)
5246                         (void) printf("\t");
5247                 else
5248                         (void) printf("\t%s ", who_name);
5249
5250                 for (deleg_node = uu_avl_first(avl); deleg_node != NULL;
5251                     deleg_node = uu_avl_next(avl, deleg_node)) {
5252                         if (first) {
5253                                 (void) printf("%s",
5254                                     deleg_node->dpn_perm.dp_name);
5255                                 first = B_FALSE;
5256                         } else
5257                                 (void) printf(",%s",
5258                                     deleg_node->dpn_perm.dp_name);
5259                 }
5260
5261                 (void) printf("\n");
5262         }
5263 }
5264
5265 static void
5266 print_uge_deleg_perms(uu_avl_t *who_avl, boolean_t local, boolean_t descend,
5267     const char *title)
5268 {
5269         who_perm_node_t *who_node = NULL;
5270         boolean_t prt_title = B_TRUE;
5271         uu_avl_walk_t *walk;
5272
5273         if ((walk = uu_avl_walk_start(who_avl, UU_WALK_ROBUST)) == NULL)
5274                 nomem();
5275
5276         while ((who_node = uu_avl_walk_next(walk)) != NULL) {
5277                 const char *who_name = who_node->who_perm.who_name;
5278                 const char *nice_who_name = who_node->who_perm.who_ug_name;
5279                 uu_avl_t *avl = who_node->who_perm.who_deleg_perm_avl;
5280                 zfs_deleg_who_type_t who_type = who_node->who_perm.who_type;
5281                 char delim = ' ';
5282                 deleg_perm_node_t *deleg_node;
5283                 boolean_t prt_who = B_TRUE;
5284
5285                 for (deleg_node = uu_avl_first(avl);
5286                     deleg_node != NULL;
5287                     deleg_node = uu_avl_next(avl, deleg_node)) {
5288                         if (local != deleg_node->dpn_perm.dp_local ||
5289                             descend != deleg_node->dpn_perm.dp_descend)
5290                                 continue;
5291
5292                         if (prt_who) {
5293                                 const char *who = NULL;
5294                                 if (prt_title) {
5295                                         prt_title = B_FALSE;
5296                                         (void) printf(title);
5297                                 }
5298
5299                                 switch (who_type) {
5300                                 case ZFS_DELEG_USER_SETS:
5301                                 case ZFS_DELEG_USER:
5302                                         who = gettext("user");
5303                                         if (nice_who_name)
5304                                                 who_name  = nice_who_name;
5305                                         break;
5306                                 case ZFS_DELEG_GROUP_SETS:
5307                                 case ZFS_DELEG_GROUP:
5308                                         who = gettext("group");
5309                                         if (nice_who_name)
5310                                                 who_name  = nice_who_name;
5311                                         break;
5312                                 case ZFS_DELEG_EVERYONE_SETS:
5313                                 case ZFS_DELEG_EVERYONE:
5314                                         who = gettext("everyone");
5315                                         who_name = NULL;
5316                                         break;
5317
5318                                 default:
5319                                         assert(who != NULL);
5320                                 }
5321
5322                                 prt_who = B_FALSE;
5323                                 if (who_name == NULL)
5324                                         (void) printf("\t%s", who);
5325                                 else
5326                                         (void) printf("\t%s %s", who, who_name);
5327                         }
5328
5329                         (void) printf("%c%s", delim,
5330                             deleg_node->dpn_perm.dp_name);
5331                         delim = ',';
5332                 }
5333
5334                 if (!prt_who)
5335                         (void) printf("\n");
5336         }
5337
5338         uu_avl_walk_end(walk);
5339 }
5340
5341 static void
5342 print_fs_perms(fs_perm_set_t *fspset)
5343 {
5344         fs_perm_node_t *node = NULL;
5345         char buf[MAXNAMELEN + 32];
5346         const char *dsname = buf;
5347
5348         for (node = uu_list_first(fspset->fsps_list); node != NULL;
5349             node = uu_list_next(fspset->fsps_list, node)) {
5350                 uu_avl_t *sc_avl = node->fspn_fsperm.fsp_sc_avl;
5351                 uu_avl_t *uge_avl = node->fspn_fsperm.fsp_uge_avl;
5352                 int left = 0;
5353
5354                 (void) snprintf(buf, sizeof (buf),
5355                     gettext("---- Permissions on %s "),
5356                     node->fspn_fsperm.fsp_name);
5357                 (void) printf(dsname);
5358                 left = 70 - strlen(buf);
5359                 while (left-- > 0)
5360                         (void) printf("-");
5361                 (void) printf("\n");
5362
5363                 print_set_creat_perms(sc_avl);
5364                 print_uge_deleg_perms(uge_avl, B_TRUE, B_FALSE,
5365                     gettext("Local permissions:\n"));
5366                 print_uge_deleg_perms(uge_avl, B_FALSE, B_TRUE,
5367                     gettext("Descendent permissions:\n"));
5368                 print_uge_deleg_perms(uge_avl, B_TRUE, B_TRUE,
5369                     gettext("Local+Descendent permissions:\n"));
5370         }
5371 }
5372
5373 static fs_perm_set_t fs_perm_set = { NULL, NULL, NULL, NULL };
5374
5375 struct deleg_perms {
5376         boolean_t un;
5377         nvlist_t *nvl;
5378 };
5379
5380 static int
5381 set_deleg_perms(zfs_handle_t *zhp, void *data)
5382 {
5383         struct deleg_perms *perms = (struct deleg_perms *)data;
5384         zfs_type_t zfs_type = zfs_get_type(zhp);
5385
5386         if (zfs_type != ZFS_TYPE_FILESYSTEM && zfs_type != ZFS_TYPE_VOLUME)
5387                 return (0);
5388
5389         return (zfs_set_fsacl(zhp, perms->un, perms->nvl));
5390 }
5391
5392 static int
5393 zfs_do_allow_unallow_impl(int argc, char **argv, boolean_t un)
5394 {
5395         zfs_handle_t *zhp;
5396         nvlist_t *perm_nvl = NULL;
5397         nvlist_t *update_perm_nvl = NULL;
5398         int error = 1;
5399         int c;
5400         struct allow_opts opts = { 0 };
5401
5402         const char *optstr = un ? "ldugecsrh" : "ldugecsh";
5403
5404         /* check opts */
5405         while ((c = getopt(argc, argv, optstr)) != -1) {
5406                 switch (c) {
5407                 case 'l':
5408                         opts.local = B_TRUE;
5409                         break;
5410                 case 'd':
5411                         opts.descend = B_TRUE;
5412                         break;
5413                 case 'u':
5414                         opts.user = B_TRUE;
5415                         break;
5416                 case 'g':
5417                         opts.group = B_TRUE;
5418                         break;
5419                 case 'e':
5420                         opts.everyone = B_TRUE;
5421                         break;
5422                 case 's':
5423                         opts.set = B_TRUE;
5424                         break;
5425                 case 'c':
5426                         opts.create = B_TRUE;
5427                         break;
5428                 case 'r':
5429                         opts.recursive = B_TRUE;
5430                         break;
5431                 case ':':
5432                         (void) fprintf(stderr, gettext("missing argument for "
5433                             "'%c' option\n"), optopt);
5434                         usage(B_FALSE);
5435                         break;
5436                 case 'h':
5437                         opts.prt_usage = B_TRUE;
5438                         break;
5439                 case '?':
5440                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5441                             optopt);
5442                         usage(B_FALSE);
5443                 }
5444         }
5445
5446         argc -= optind;
5447         argv += optind;
5448
5449         /* check arguments */
5450         parse_allow_args(argc, argv, un, &opts);
5451
5452         /* try to open the dataset */
5453         if ((zhp = zfs_open(g_zfs, opts.dataset, ZFS_TYPE_FILESYSTEM |
5454             ZFS_TYPE_VOLUME)) == NULL) {
5455                 (void) fprintf(stderr, "Failed to open dataset: %s\n",
5456                     opts.dataset);
5457                 return (-1);
5458         }
5459
5460         if (zfs_get_fsacl(zhp, &perm_nvl) != 0)
5461                 goto cleanup2;
5462
5463         fs_perm_set_init(&fs_perm_set);
5464         if (parse_fs_perm_set(&fs_perm_set, perm_nvl) != 0) {
5465                 (void) fprintf(stderr, "Failed to parse fsacl permissions\n");
5466                 goto cleanup1;
5467         }
5468
5469         if (opts.prt_perms)
5470                 print_fs_perms(&fs_perm_set);
5471         else {
5472                 (void) construct_fsacl_list(un, &opts, &update_perm_nvl);
5473                 if (zfs_set_fsacl(zhp, un, update_perm_nvl) != 0)
5474                         goto cleanup0;
5475
5476                 if (un && opts.recursive) {
5477                         struct deleg_perms data = { un, update_perm_nvl };
5478                         if (zfs_iter_filesystems(zhp, set_deleg_perms,
5479                             &data) != 0)
5480                                 goto cleanup0;
5481                 }
5482         }
5483
5484         error = 0;
5485
5486 cleanup0:
5487         nvlist_free(perm_nvl);
5488         nvlist_free(update_perm_nvl);
5489 cleanup1:
5490         fs_perm_set_fini(&fs_perm_set);
5491 cleanup2:
5492         zfs_close(zhp);
5493
5494         return (error);
5495 }
5496
5497 static int
5498 zfs_do_allow(int argc, char **argv)
5499 {
5500         return (zfs_do_allow_unallow_impl(argc, argv, B_FALSE));
5501 }
5502
5503 static int
5504 zfs_do_unallow(int argc, char **argv)
5505 {
5506         return (zfs_do_allow_unallow_impl(argc, argv, B_TRUE));
5507 }
5508
5509 static int
5510 zfs_do_hold_rele_impl(int argc, char **argv, boolean_t holding)
5511 {
5512         int errors = 0;
5513         int i;
5514         const char *tag;
5515         boolean_t recursive = B_FALSE;
5516         const char *opts = holding ? "rt" : "r";
5517         int c;
5518
5519         /* check options */
5520         while ((c = getopt(argc, argv, opts)) != -1) {
5521                 switch (c) {
5522                 case 'r':
5523                         recursive = B_TRUE;
5524                         break;
5525                 case '?':
5526                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5527                             optopt);
5528                         usage(B_FALSE);
5529                 }
5530         }
5531
5532         argc -= optind;
5533         argv += optind;
5534
5535         /* check number of arguments */
5536         if (argc < 2)
5537                 usage(B_FALSE);
5538
5539         tag = argv[0];
5540         --argc;
5541         ++argv;
5542
5543         if (holding && tag[0] == '.') {
5544                 /* tags starting with '.' are reserved for libzfs */
5545                 (void) fprintf(stderr, gettext("tag may not start with '.'\n"));
5546                 usage(B_FALSE);
5547         }
5548
5549         for (i = 0; i < argc; ++i) {
5550                 zfs_handle_t *zhp;
5551                 char parent[ZFS_MAX_DATASET_NAME_LEN];
5552                 const char *delim;
5553                 char *path = argv[i];
5554
5555                 delim = strchr(path, '@');
5556                 if (delim == NULL) {
5557                         (void) fprintf(stderr,
5558                             gettext("'%s' is not a snapshot\n"), path);
5559                         ++errors;
5560                         continue;
5561                 }
5562                 (void) strncpy(parent, path, delim - path);
5563                 parent[delim - path] = '\0';
5564
5565                 zhp = zfs_open(g_zfs, parent,
5566                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
5567                 if (zhp == NULL) {
5568                         ++errors;
5569                         continue;
5570                 }
5571                 if (holding) {
5572                         if (zfs_hold(zhp, delim+1, tag, recursive, -1) != 0)
5573                                 ++errors;
5574                 } else {
5575                         if (zfs_release(zhp, delim+1, tag, recursive) != 0)
5576                                 ++errors;
5577                 }
5578                 zfs_close(zhp);
5579         }
5580
5581         return (errors != 0);
5582 }
5583
5584 /*
5585  * zfs hold [-r] [-t] <tag> <snap> ...
5586  *
5587  *      -r      Recursively hold
5588  *
5589  * Apply a user-hold with the given tag to the list of snapshots.
5590  */
5591 static int
5592 zfs_do_hold(int argc, char **argv)
5593 {
5594         return (zfs_do_hold_rele_impl(argc, argv, B_TRUE));
5595 }
5596
5597 /*
5598  * zfs release [-r] <tag> <snap> ...
5599  *
5600  *      -r      Recursively release
5601  *
5602  * Release a user-hold with the given tag from the list of snapshots.
5603  */
5604 static int
5605 zfs_do_release(int argc, char **argv)
5606 {
5607         return (zfs_do_hold_rele_impl(argc, argv, B_FALSE));
5608 }
5609
5610 typedef struct holds_cbdata {
5611         boolean_t       cb_recursive;
5612         const char      *cb_snapname;
5613         nvlist_t        **cb_nvlp;
5614         size_t          cb_max_namelen;
5615         size_t          cb_max_taglen;
5616 } holds_cbdata_t;
5617
5618 #define STRFTIME_FMT_STR "%a %b %e %k:%M %Y"
5619 #define DATETIME_BUF_LEN (32)
5620 /*
5621  *
5622  */
5623 static void
5624 print_holds(boolean_t scripted, boolean_t literal, size_t nwidth,
5625     size_t tagwidth, nvlist_t *nvl)
5626 {
5627         int i;
5628         nvpair_t *nvp = NULL;
5629         char *hdr_cols[] = { "NAME", "TAG", "TIMESTAMP" };
5630         const char *col;
5631
5632         if (!scripted) {
5633                 for (i = 0; i < 3; i++) {
5634                         col = gettext(hdr_cols[i]);
5635                         if (i < 2)
5636                                 (void) printf("%-*s  ", i ? tagwidth : nwidth,
5637                                     col);
5638                         else
5639                                 (void) printf("%s\n", col);
5640                 }
5641         }
5642
5643         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
5644                 char *zname = nvpair_name(nvp);
5645                 nvlist_t *nvl2;
5646                 nvpair_t *nvp2 = NULL;
5647                 (void) nvpair_value_nvlist(nvp, &nvl2);
5648                 while ((nvp2 = nvlist_next_nvpair(nvl2, nvp2)) != NULL) {
5649                         char tsbuf[DATETIME_BUF_LEN];
5650                         char *tagname = nvpair_name(nvp2);
5651                         uint64_t val = 0;
5652                         time_t time;
5653                         struct tm t;
5654
5655                         (void) nvpair_value_uint64(nvp2, &val);
5656                         if (literal)
5657                                 snprintf(tsbuf, DATETIME_BUF_LEN, "%llu", val);
5658                         else {
5659                                 time = (time_t)val;
5660                                 (void) localtime_r(&time, &t);
5661                                 (void) strftime(tsbuf, DATETIME_BUF_LEN,
5662                                     gettext(STRFTIME_FMT_STR), &t);
5663                         }
5664
5665                         if (scripted) {
5666                                 (void) printf("%s\t%s\t%s\n", zname,
5667                                     tagname, tsbuf);
5668                         } else {
5669                                 (void) printf("%-*s  %-*s  %s\n", nwidth,
5670                                     zname, tagwidth, tagname, tsbuf);
5671                         }
5672                 }
5673         }
5674 }
5675
5676 /*
5677  * Generic callback function to list a dataset or snapshot.
5678  */
5679 static int
5680 holds_callback(zfs_handle_t *zhp, void *data)
5681 {
5682         holds_cbdata_t *cbp = data;
5683         nvlist_t *top_nvl = *cbp->cb_nvlp;
5684         nvlist_t *nvl = NULL;
5685         nvpair_t *nvp = NULL;
5686         const char *zname = zfs_get_name(zhp);
5687         size_t znamelen = strlen(zname);
5688
5689         if (cbp->cb_recursive && cbp->cb_snapname != NULL) {
5690                 const char *snapname;
5691                 char *delim  = strchr(zname, '@');
5692                 if (delim == NULL)
5693                         return (0);
5694
5695                 snapname = delim + 1;
5696                 if (strcmp(cbp->cb_snapname, snapname))
5697                         return (0);
5698         }
5699
5700         if (zfs_get_holds(zhp, &nvl) != 0)
5701                 return (-1);
5702
5703         if (znamelen > cbp->cb_max_namelen)
5704                 cbp->cb_max_namelen  = znamelen;
5705
5706         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
5707                 const char *tag = nvpair_name(nvp);
5708                 size_t taglen = strlen(tag);
5709                 if (taglen > cbp->cb_max_taglen)
5710                         cbp->cb_max_taglen  = taglen;
5711         }
5712
5713         return (nvlist_add_nvlist(top_nvl, zname, nvl));
5714 }
5715
5716 /*
5717  * zfs holds [-Hp] [-r | -d max] <dataset|snap> ...
5718  *
5719  *      -H      Suppress header output
5720  *      -p      Output literal values
5721  *      -r      Recursively search for holds
5722  *      -d max  Limit depth of recursive search
5723  */
5724 static int
5725 zfs_do_holds(int argc, char **argv)
5726 {
5727         int errors = 0;
5728         int c;
5729         int i;
5730         boolean_t scripted = B_FALSE;
5731         boolean_t literal = B_FALSE;
5732         boolean_t recursive = B_FALSE;
5733         const char *opts = "d:rHp";
5734         nvlist_t *nvl;
5735
5736         int types = ZFS_TYPE_SNAPSHOT;
5737         holds_cbdata_t cb = { 0 };
5738
5739         int limit = 0;
5740         int ret = 0;
5741         int flags = 0;
5742
5743         /* check options */
5744         while ((c = getopt(argc, argv, opts)) != -1) {
5745                 switch (c) {
5746                 case 'd':
5747                         limit = parse_depth(optarg, &flags);
5748                         recursive = B_TRUE;
5749                         break;
5750                 case 'r':
5751                         recursive = B_TRUE;
5752                         break;
5753                 case 'H':
5754                         scripted = B_TRUE;
5755                         break;
5756                 case 'p':
5757                         literal = B_TRUE;
5758                         break;
5759                 case '?':
5760                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5761                             optopt);
5762                         usage(B_FALSE);
5763                 }
5764         }
5765
5766         if (recursive) {
5767                 types |= ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME;
5768                 flags |= ZFS_ITER_RECURSE;
5769         }
5770
5771         argc -= optind;
5772         argv += optind;
5773
5774         /* check number of arguments */
5775         if (argc < 1)
5776                 usage(B_FALSE);
5777
5778         if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0)
5779                 nomem();
5780
5781         for (i = 0; i < argc; ++i) {
5782                 char *snapshot = argv[i];
5783                 const char *delim;
5784                 const char *snapname = NULL;
5785
5786                 delim = strchr(snapshot, '@');
5787                 if (delim != NULL) {
5788                         snapname = delim + 1;
5789                         if (recursive)
5790                                 snapshot[delim - snapshot] = '\0';
5791                 }
5792
5793                 cb.cb_recursive = recursive;
5794                 cb.cb_snapname = snapname;
5795                 cb.cb_nvlp = &nvl;
5796
5797                 /*
5798                  *  1. collect holds data, set format options
5799                  */
5800                 ret = zfs_for_each(argc, argv, flags, types, NULL, NULL, limit,
5801                     holds_callback, &cb);
5802                 if (ret != 0)
5803                         ++errors;
5804         }
5805
5806         /*
5807          *  2. print holds data
5808          */
5809         print_holds(scripted, literal, cb.cb_max_namelen, cb.cb_max_taglen,
5810             nvl);
5811
5812         if (nvlist_empty(nvl))
5813                 (void) printf(gettext("no datasets available\n"));
5814
5815         nvlist_free(nvl);
5816
5817         return (0 != errors);
5818 }
5819
5820 #define CHECK_SPINNER 30
5821 #define SPINNER_TIME 3          /* seconds */
5822 #define MOUNT_TIME 1            /* seconds */
5823
5824 typedef struct get_all_state {
5825         boolean_t       ga_verbose;
5826         get_all_cb_t    *ga_cbp;
5827 } get_all_state_t;
5828
5829 static int
5830 get_one_dataset(zfs_handle_t *zhp, void *data)
5831 {
5832         static char *spin[] = { "-", "\\", "|", "/" };
5833         static int spinval = 0;
5834         static int spincheck = 0;
5835         static time_t last_spin_time = (time_t)0;
5836         get_all_state_t *state = data;
5837         zfs_type_t type = zfs_get_type(zhp);
5838
5839         if (state->ga_verbose) {
5840                 if (--spincheck < 0) {
5841                         time_t now = time(NULL);
5842                         if (last_spin_time + SPINNER_TIME < now) {
5843                                 update_progress(spin[spinval++ % 4]);
5844                                 last_spin_time = now;
5845                         }
5846                         spincheck = CHECK_SPINNER;
5847                 }
5848         }
5849
5850         /*
5851          * Interate over any nested datasets.
5852          */
5853         if (zfs_iter_filesystems(zhp, get_one_dataset, data) != 0) {
5854                 zfs_close(zhp);
5855                 return (1);
5856         }
5857
5858         /*
5859          * Skip any datasets whose type does not match.
5860          */
5861         if ((type & ZFS_TYPE_FILESYSTEM) == 0) {
5862                 zfs_close(zhp);
5863                 return (0);
5864         }
5865         libzfs_add_handle(state->ga_cbp, zhp);
5866         assert(state->ga_cbp->cb_used <= state->ga_cbp->cb_alloc);
5867
5868         return (0);
5869 }
5870
5871 static void
5872 get_all_datasets(get_all_cb_t *cbp, boolean_t verbose)
5873 {
5874         get_all_state_t state = {
5875                 .ga_verbose = verbose,
5876                 .ga_cbp = cbp
5877         };
5878
5879         if (verbose)
5880                 set_progress_header(gettext("Reading ZFS config"));
5881         (void) zfs_iter_root(g_zfs, get_one_dataset, &state);
5882
5883         if (verbose)
5884                 finish_progress(gettext("done."));
5885 }
5886
5887 /*
5888  * Generic callback for sharing or mounting filesystems.  Because the code is so
5889  * similar, we have a common function with an extra parameter to determine which
5890  * mode we are using.
5891  */
5892 typedef enum { OP_SHARE, OP_MOUNT } share_mount_op_t;
5893
5894 typedef struct share_mount_state {
5895         share_mount_op_t        sm_op;
5896         boolean_t       sm_verbose;
5897         int     sm_flags;
5898         char    *sm_options;
5899         char    *sm_proto; /* only valid for OP_SHARE */
5900         pthread_mutex_t sm_lock; /* protects the remaining fields */
5901         uint_t  sm_total; /* number of filesystems to process */
5902         uint_t  sm_done; /* number of filesystems processed */
5903         int     sm_status; /* -1 if any of the share/mount operations failed */
5904 } share_mount_state_t;
5905
5906 /*
5907  * Share or mount a dataset.
5908  */
5909 static int
5910 share_mount_one(zfs_handle_t *zhp, int op, int flags, char *protocol,
5911     boolean_t explicit, const char *options)
5912 {
5913         char mountpoint[ZFS_MAXPROPLEN];
5914         char shareopts[ZFS_MAXPROPLEN];
5915         char smbshareopts[ZFS_MAXPROPLEN];
5916         const char *cmdname = op == OP_SHARE ? "share" : "mount";
5917         struct mnttab mnt;
5918         uint64_t zoned, canmount;
5919         boolean_t shared_nfs, shared_smb;
5920
5921         assert(zfs_get_type(zhp) & ZFS_TYPE_FILESYSTEM);
5922
5923         /*
5924          * Check to make sure we can mount/share this dataset.  If we
5925          * are in the global zone and the filesystem is exported to a
5926          * local zone, or if we are in a local zone and the
5927          * filesystem is not exported, then it is an error.
5928          */
5929         zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED);
5930
5931         if (zoned && getzoneid() == GLOBAL_ZONEID) {
5932                 if (!explicit)
5933                         return (0);
5934
5935                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5936                     "dataset is exported to a local zone\n"), cmdname,
5937                     zfs_get_name(zhp));
5938                 return (1);
5939
5940         } else if (!zoned && getzoneid() != GLOBAL_ZONEID) {
5941                 if (!explicit)
5942                         return (0);
5943
5944                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5945                     "permission denied\n"), cmdname,
5946                     zfs_get_name(zhp));
5947                 return (1);
5948         }
5949
5950         /*
5951          * Ignore any filesystems which don't apply to us. This
5952          * includes those with a legacy mountpoint, or those with
5953          * legacy share options.
5954          */
5955         verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
5956             sizeof (mountpoint), NULL, NULL, 0, B_FALSE) == 0);
5957         verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, shareopts,
5958             sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0);
5959         verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshareopts,
5960             sizeof (smbshareopts), NULL, NULL, 0, B_FALSE) == 0);
5961
5962         if (op == OP_SHARE && strcmp(shareopts, "off") == 0 &&
5963             strcmp(smbshareopts, "off") == 0) {
5964                 if (!explicit)
5965                         return (0);
5966
5967                 (void) fprintf(stderr, gettext("cannot share '%s': "
5968                     "legacy share\n"), zfs_get_name(zhp));
5969                 (void) fprintf(stderr, gettext("to "
5970                     "share this filesystem set "
5971                     "sharenfs property on\n"));
5972                 return (1);
5973         }
5974
5975         /*
5976          * We cannot share or mount legacy filesystems. If the
5977          * shareopts is non-legacy but the mountpoint is legacy, we
5978          * treat it as a legacy share.
5979          */
5980         if (strcmp(mountpoint, "legacy") == 0) {
5981                 if (!explicit)
5982                         return (0);
5983
5984                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5985                     "legacy mountpoint\n"), cmdname, zfs_get_name(zhp));
5986                 (void) fprintf(stderr, gettext("use %s(8) to "
5987                     "%s this filesystem\n"), cmdname, cmdname);
5988                 return (1);
5989         }
5990
5991         if (strcmp(mountpoint, "none") == 0) {
5992                 if (!explicit)
5993                         return (0);
5994
5995                 (void) fprintf(stderr, gettext("cannot %s '%s': no "
5996                     "mountpoint set\n"), cmdname, zfs_get_name(zhp));
5997                 return (1);
5998         }
5999
6000         /*
6001          * canmount     explicit        outcome
6002          * on           no              pass through
6003          * on           yes             pass through
6004          * off          no              return 0
6005          * off          yes             display error, return 1
6006          * noauto       no              return 0
6007          * noauto       yes             pass through
6008          */
6009         canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT);
6010         if (canmount == ZFS_CANMOUNT_OFF) {
6011                 if (!explicit)
6012                         return (0);
6013
6014                 (void) fprintf(stderr, gettext("cannot %s '%s': "
6015                     "'canmount' property is set to 'off'\n"), cmdname,
6016                     zfs_get_name(zhp));
6017                 return (1);
6018         } else if (canmount == ZFS_CANMOUNT_NOAUTO && !explicit) {
6019                 return (0);
6020         }
6021
6022         /*
6023          * If this filesystem is inconsistent and has a receive resume
6024          * token, we can not mount it.
6025          */
6026         if (zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) &&
6027             zfs_prop_get(zhp, ZFS_PROP_RECEIVE_RESUME_TOKEN,
6028             NULL, 0, NULL, NULL, 0, B_TRUE) == 0) {
6029                 if (!explicit)
6030                         return (0);
6031
6032                 (void) fprintf(stderr, gettext("cannot %s '%s': "
6033                     "Contains partially-completed state from "
6034                     "\"zfs receive -r\", which can be resumed with "
6035                     "\"zfs send -t\"\n"),
6036                     cmdname, zfs_get_name(zhp));
6037                 return (1);
6038         }
6039
6040         /*
6041          * At this point, we have verified that the mountpoint and/or
6042          * shareopts are appropriate for auto management. If the
6043          * filesystem is already mounted or shared, return (failing
6044          * for explicit requests); otherwise mount or share the
6045          * filesystem.
6046          */
6047         switch (op) {
6048         case OP_SHARE:
6049
6050                 shared_nfs = zfs_is_shared_nfs(zhp, NULL);
6051                 shared_smb = zfs_is_shared_smb(zhp, NULL);
6052
6053                 if ((shared_nfs && shared_smb) ||
6054                     (shared_nfs && strcmp(shareopts, "on") == 0 &&
6055                     strcmp(smbshareopts, "off") == 0) ||
6056                     (shared_smb && strcmp(smbshareopts, "on") == 0 &&
6057                     strcmp(shareopts, "off") == 0)) {
6058                         if (!explicit)
6059                                 return (0);
6060
6061                         (void) fprintf(stderr, gettext("cannot share "
6062                             "'%s': filesystem already shared\n"),
6063                             zfs_get_name(zhp));
6064                         return (1);
6065                 }
6066
6067                 if (!zfs_is_mounted(zhp, NULL) &&
6068                     zfs_mount(zhp, NULL, 0) != 0)
6069                         return (1);
6070
6071                 if (protocol == NULL) {
6072                         if (zfs_shareall(zhp) != 0)
6073                                 return (1);
6074                 } else if (strcmp(protocol, "nfs") == 0) {
6075                         if (zfs_share_nfs(zhp))
6076                                 return (1);
6077                 } else if (strcmp(protocol, "smb") == 0) {
6078                         if (zfs_share_smb(zhp))
6079                                 return (1);
6080                 } else {
6081                         (void) fprintf(stderr, gettext("cannot share "
6082                             "'%s': invalid share type '%s' "
6083                             "specified\n"),
6084                             zfs_get_name(zhp), protocol);
6085                         return (1);
6086                 }
6087
6088                 break;
6089
6090         case OP_MOUNT:
6091                 if (options == NULL)
6092                         mnt.mnt_mntopts = "";
6093                 else
6094                         mnt.mnt_mntopts = (char *)options;
6095
6096                 if (!hasmntopt(&mnt, MNTOPT_REMOUNT) &&
6097                     zfs_is_mounted(zhp, NULL)) {
6098                         if (!explicit)
6099                                 return (0);
6100
6101                         (void) fprintf(stderr, gettext("cannot mount "
6102                             "'%s': filesystem already mounted\n"),
6103                             zfs_get_name(zhp));
6104                         return (1);
6105                 }
6106
6107                 if (zfs_mount(zhp, options, flags) != 0)
6108                         return (1);
6109                 break;
6110         }
6111
6112         return (0);
6113 }
6114
6115 /*
6116  * Reports progress in the form "(current/total)".  Not thread-safe.
6117  */
6118 static void
6119 report_mount_progress(int current, int total)
6120 {
6121         static time_t last_progress_time = 0;
6122         time_t now = time(NULL);
6123         char info[32];
6124
6125         /* display header if we're here for the first time */
6126         if (current == 1) {
6127                 set_progress_header(gettext("Mounting ZFS filesystems"));
6128         } else if (current != total && last_progress_time + MOUNT_TIME >= now) {
6129                 /* too soon to report again */
6130                 return;
6131         }
6132
6133         last_progress_time = now;
6134
6135         (void) sprintf(info, "(%d/%d)", current, total);
6136
6137         if (current == total)
6138                 finish_progress(info);
6139         else
6140                 update_progress(info);
6141 }
6142
6143 /*
6144  * zfs_foreach_mountpoint() callback that mounts or shares on filesystem and
6145  * updates the progress meter
6146  */
6147 static int
6148 share_mount_one_cb(zfs_handle_t *zhp, void *arg)
6149 {
6150         share_mount_state_t *sms = arg;
6151         int ret;
6152
6153         ret = share_mount_one(zhp, sms->sm_op, sms->sm_flags, sms->sm_proto,
6154             B_FALSE, sms->sm_options);
6155
6156         pthread_mutex_lock(&sms->sm_lock);
6157         if (ret != 0)
6158                 sms->sm_status = ret;
6159         sms->sm_done++;
6160         if (sms->sm_verbose)
6161                 report_mount_progress(sms->sm_done, sms->sm_total);
6162         pthread_mutex_unlock(&sms->sm_lock);
6163         return (ret);
6164 }
6165
6166 static void
6167 append_options(char *mntopts, char *newopts)
6168 {
6169         int len = strlen(mntopts);
6170
6171         /* original length plus new string to append plus 1 for the comma */
6172         if (len + 1 + strlen(newopts) >= MNT_LINE_MAX) {
6173                 (void) fprintf(stderr, gettext("the opts argument for "
6174                     "'%c' option is too long (more than %d chars)\n"),
6175                     "-o", MNT_LINE_MAX);
6176                 usage(B_FALSE);
6177         }
6178
6179         if (*mntopts)
6180                 mntopts[len++] = ',';
6181
6182         (void) strcpy(&mntopts[len], newopts);
6183 }
6184
6185 static int
6186 share_mount(int op, int argc, char **argv)
6187 {
6188         int do_all = 0;
6189         boolean_t verbose = B_FALSE;
6190         int c, ret = 0;
6191         char *options = NULL;
6192         int flags = 0;
6193
6194         /* check options */
6195         while ((c = getopt(argc, argv, op == OP_MOUNT ? ":avo:O" : "a"))
6196             != -1) {
6197                 switch (c) {
6198                 case 'a':
6199                         do_all = 1;
6200                         break;
6201                 case 'v':
6202                         verbose = B_TRUE;
6203                         break;
6204                 case 'o':
6205                         if (*optarg == '\0') {
6206                                 (void) fprintf(stderr, gettext("empty mount "
6207                                     "options (-o) specified\n"));
6208                                 usage(B_FALSE);
6209                         }
6210
6211                         if (options == NULL)
6212                                 options = safe_malloc(MNT_LINE_MAX + 1);
6213
6214                         /* option validation is done later */
6215                         append_options(options, optarg);
6216                         break;
6217
6218                 case 'O':
6219                         warnx("no overlay mounts support on FreeBSD, ignoring");
6220                         break;
6221                 case ':':
6222                         (void) fprintf(stderr, gettext("missing argument for "
6223                             "'%c' option\n"), optopt);
6224                         usage(B_FALSE);
6225                         break;
6226                 case '?':
6227                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6228                             optopt);
6229                         usage(B_FALSE);
6230                 }
6231         }
6232
6233         argc -= optind;
6234         argv += optind;
6235
6236         /* check number of arguments */
6237         if (do_all) {
6238                 char *protocol = NULL;
6239
6240                 if (op == OP_SHARE && argc > 0) {
6241                         if (strcmp(argv[0], "nfs") != 0 &&
6242                             strcmp(argv[0], "smb") != 0) {
6243                                 (void) fprintf(stderr, gettext("share type "
6244                                     "must be 'nfs' or 'smb'\n"));
6245                                 usage(B_FALSE);
6246                         }
6247                         protocol = argv[0];
6248                         argc--;
6249                         argv++;
6250                 }
6251
6252                 if (argc != 0) {
6253                         (void) fprintf(stderr, gettext("too many arguments\n"));
6254                         usage(B_FALSE);
6255                 }
6256
6257                 start_progress_timer();
6258                 get_all_cb_t cb = { 0 };
6259                 get_all_datasets(&cb, verbose);
6260
6261                 if (cb.cb_used == 0) {
6262                         if (options != NULL)
6263                                 free(options);
6264                         return (0);
6265                 }
6266
6267 #ifdef illumos
6268                 if (op == OP_SHARE) {
6269                         sa_init_selective_arg_t sharearg;
6270                         sharearg.zhandle_arr = cb.cb_handles;
6271                         sharearg.zhandle_len = cb.cb_used;
6272                         if ((ret = zfs_init_libshare_arg(g_zfs,
6273                             SA_INIT_SHARE_API_SELECTIVE, &sharearg)) != SA_OK) {
6274                                 (void) fprintf(stderr, gettext(
6275                                     "Could not initialize libshare, %d"), ret);
6276                                 return (ret);
6277                         }
6278                 }
6279 #endif
6280                 share_mount_state_t share_mount_state = { 0 };
6281                 share_mount_state.sm_op = op;
6282                 share_mount_state.sm_verbose = verbose;
6283                 share_mount_state.sm_flags = flags;
6284                 share_mount_state.sm_options = options;
6285                 share_mount_state.sm_proto = protocol;
6286                 share_mount_state.sm_total = cb.cb_used;
6287                 pthread_mutex_init(&share_mount_state.sm_lock, NULL);
6288
6289                 /*
6290                  * libshare isn't mt-safe, so only do the operation in parallel
6291                  * if we're mounting.
6292                  */
6293                 zfs_foreach_mountpoint(g_zfs, cb.cb_handles, cb.cb_used,
6294                     share_mount_one_cb, &share_mount_state, op == OP_MOUNT);
6295                 ret = share_mount_state.sm_status;
6296
6297                 for (int i = 0; i < cb.cb_used; i++)
6298                         zfs_close(cb.cb_handles[i]);
6299                 free(cb.cb_handles);
6300         } else if (argc == 0) {
6301                 struct mnttab entry;
6302
6303                 if ((op == OP_SHARE) || (options != NULL)) {
6304                         (void) fprintf(stderr, gettext("missing filesystem "
6305                             "argument (specify -a for all)\n"));
6306                         usage(B_FALSE);
6307                 }
6308
6309                 /*
6310                  * When mount is given no arguments, go through /etc/mnttab and
6311                  * display any active ZFS mounts.  We hide any snapshots, since
6312                  * they are controlled automatically.
6313                  */
6314                 rewind(mnttab_file);
6315                 while (getmntent(mnttab_file, &entry) == 0) {
6316                         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0 ||
6317                             strchr(entry.mnt_special, '@') != NULL)
6318                                 continue;
6319
6320                         (void) printf("%-30s  %s\n", entry.mnt_special,
6321                             entry.mnt_mountp);
6322                 }
6323
6324         } else {
6325                 zfs_handle_t *zhp;
6326
6327                 if (argc > 1) {
6328                         (void) fprintf(stderr,
6329                             gettext("too many arguments\n"));
6330                         usage(B_FALSE);
6331                 }
6332
6333                 if ((zhp = zfs_open(g_zfs, argv[0],
6334                     ZFS_TYPE_FILESYSTEM)) == NULL) {
6335                         ret = 1;
6336                 } else {
6337                         ret = share_mount_one(zhp, op, flags, NULL, B_TRUE,
6338                             options);
6339                         zfs_close(zhp);
6340                 }
6341         }
6342
6343         return (ret);
6344 }
6345
6346 /*
6347  * zfs mount -a [nfs]
6348  * zfs mount filesystem
6349  *
6350  * Mount all filesystems, or mount the given filesystem.
6351  */
6352 static int
6353 zfs_do_mount(int argc, char **argv)
6354 {
6355         return (share_mount(OP_MOUNT, argc, argv));
6356 }
6357
6358 /*
6359  * zfs share -a [nfs | smb]
6360  * zfs share filesystem
6361  *
6362  * Share all filesystems, or share the given filesystem.
6363  */
6364 static int
6365 zfs_do_share(int argc, char **argv)
6366 {
6367         return (share_mount(OP_SHARE, argc, argv));
6368 }
6369
6370 typedef struct unshare_unmount_node {
6371         zfs_handle_t    *un_zhp;
6372         char            *un_mountp;
6373         uu_avl_node_t   un_avlnode;
6374 } unshare_unmount_node_t;
6375
6376 /* ARGSUSED */
6377 static int
6378 unshare_unmount_compare(const void *larg, const void *rarg, void *unused)
6379 {
6380         const unshare_unmount_node_t *l = larg;
6381         const unshare_unmount_node_t *r = rarg;
6382
6383         return (strcmp(l->un_mountp, r->un_mountp));
6384 }
6385
6386 /*
6387  * Convenience routine used by zfs_do_umount() and manual_unmount().  Given an
6388  * absolute path, find the entry /etc/mnttab, verify that its a ZFS filesystem,
6389  * and unmount it appropriately.
6390  */
6391 static int
6392 unshare_unmount_path(int op, char *path, int flags, boolean_t is_manual)
6393 {
6394         zfs_handle_t *zhp;
6395         int ret = 0;
6396         struct stat64 statbuf;
6397         struct extmnttab entry;
6398         const char *cmdname = (op == OP_SHARE) ? "unshare" : "unmount";
6399         ino_t path_inode;
6400
6401         /*
6402          * Search for the path in /etc/mnttab.  Rather than looking for the
6403          * specific path, which can be fooled by non-standard paths (i.e. ".."
6404          * or "//"), we stat() the path and search for the corresponding
6405          * (major,minor) device pair.
6406          */
6407         if (stat64(path, &statbuf) != 0) {
6408                 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
6409                     cmdname, path, strerror(errno));
6410                 return (1);
6411         }
6412         path_inode = statbuf.st_ino;
6413
6414         /*
6415          * Search for the given (major,minor) pair in the mount table.
6416          */
6417 #ifdef illumos
6418         rewind(mnttab_file);
6419         while ((ret = getextmntent(mnttab_file, &entry, 0)) == 0) {
6420                 if (entry.mnt_major == major(statbuf.st_dev) &&
6421                     entry.mnt_minor == minor(statbuf.st_dev))
6422                         break;
6423         }
6424 #else
6425         {
6426                 struct statfs sfs;
6427
6428                 if (statfs(path, &sfs) != 0) {
6429                         (void) fprintf(stderr, "%s: %s\n", path,
6430                             strerror(errno));
6431                         ret = -1;
6432                 }
6433                 statfs2mnttab(&sfs, &entry);
6434         }
6435 #endif
6436         if (ret != 0) {
6437                 if (op == OP_SHARE) {
6438                         (void) fprintf(stderr, gettext("cannot %s '%s': not "
6439                             "currently mounted\n"), cmdname, path);
6440                         return (1);
6441                 }
6442                 (void) fprintf(stderr, gettext("warning: %s not in mnttab\n"),
6443                     path);
6444                 if ((ret = umount2(path, flags)) != 0)
6445                         (void) fprintf(stderr, gettext("%s: %s\n"), path,
6446                             strerror(errno));
6447                 return (ret != 0);
6448         }
6449
6450         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) {
6451                 (void) fprintf(stderr, gettext("cannot %s '%s': not a ZFS "
6452                     "filesystem\n"), cmdname, path);
6453                 return (1);
6454         }
6455
6456         if ((zhp = zfs_open(g_zfs, entry.mnt_special,
6457             ZFS_TYPE_FILESYSTEM)) == NULL)
6458                 return (1);
6459
6460         ret = 1;
6461         if (stat64(entry.mnt_mountp, &statbuf) != 0) {
6462                 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
6463                     cmdname, path, strerror(errno));
6464                 goto out;
6465         } else if (statbuf.st_ino != path_inode) {
6466                 (void) fprintf(stderr, gettext("cannot "
6467                     "%s '%s': not a mountpoint\n"), cmdname, path);
6468                 goto out;
6469         }
6470
6471         if (op == OP_SHARE) {
6472                 char nfs_mnt_prop[ZFS_MAXPROPLEN];
6473                 char smbshare_prop[ZFS_MAXPROPLEN];
6474
6475                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, nfs_mnt_prop,
6476                     sizeof (nfs_mnt_prop), NULL, NULL, 0, B_FALSE) == 0);
6477                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshare_prop,
6478                     sizeof (smbshare_prop), NULL, NULL, 0, B_FALSE) == 0);
6479
6480                 if (strcmp(nfs_mnt_prop, "off") == 0 &&
6481                     strcmp(smbshare_prop, "off") == 0) {
6482                         (void) fprintf(stderr, gettext("cannot unshare "
6483                             "'%s': legacy share\n"), path);
6484 #ifdef illumos
6485                         (void) fprintf(stderr, gettext("use "
6486                             "unshare(1M) to unshare this filesystem\n"));
6487 #endif
6488                 } else if (!zfs_is_shared(zhp)) {
6489                         (void) fprintf(stderr, gettext("cannot unshare '%s': "
6490                             "not currently shared\n"), path);
6491                 } else {
6492                         ret = zfs_unshareall_bypath(zhp, path);
6493                 }
6494         } else {
6495                 char mtpt_prop[ZFS_MAXPROPLEN];
6496
6497                 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mtpt_prop,
6498                     sizeof (mtpt_prop), NULL, NULL, 0, B_FALSE) == 0);
6499
6500                 if (is_manual) {
6501                         ret = zfs_unmount(zhp, NULL, flags);
6502                 } else if (strcmp(mtpt_prop, "legacy") == 0) {
6503                         (void) fprintf(stderr, gettext("cannot unmount "
6504                             "'%s': legacy mountpoint\n"),
6505                             zfs_get_name(zhp));
6506                         (void) fprintf(stderr, gettext("use umount(8) "
6507                             "to unmount this filesystem\n"));
6508                 } else {
6509                         ret = zfs_unmountall(zhp, flags);
6510                 }
6511         }
6512
6513 out:
6514         zfs_close(zhp);
6515
6516         return (ret != 0);
6517 }
6518
6519 /*
6520  * Generic callback for unsharing or unmounting a filesystem.
6521  */
6522 static int
6523 unshare_unmount(int op, int argc, char **argv)
6524 {
6525         int do_all = 0;
6526         int flags = 0;
6527         int ret = 0;
6528         int c;
6529         zfs_handle_t *zhp;
6530         char nfs_mnt_prop[ZFS_MAXPROPLEN];
6531         char sharesmb[ZFS_MAXPROPLEN];
6532
6533         /* check options */
6534         while ((c = getopt(argc, argv, op == OP_SHARE ? "a" : "af")) != -1) {
6535                 switch (c) {
6536                 case 'a':
6537                         do_all = 1;
6538                         break;
6539                 case 'f':
6540                         flags = MS_FORCE;
6541                         break;
6542                 case '?':
6543                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6544                             optopt);
6545                         usage(B_FALSE);
6546                 }
6547         }
6548
6549         argc -= optind;
6550         argv += optind;
6551
6552         if (do_all) {
6553                 /*
6554                  * We could make use of zfs_for_each() to walk all datasets in
6555                  * the system, but this would be very inefficient, especially
6556                  * since we would have to linearly search /etc/mnttab for each
6557                  * one.  Instead, do one pass through /etc/mnttab looking for
6558                  * zfs entries and call zfs_unmount() for each one.
6559                  *
6560                  * Things get a little tricky if the administrator has created
6561                  * mountpoints beneath other ZFS filesystems.  In this case, we
6562                  * have to unmount the deepest filesystems first.  To accomplish
6563                  * this, we place all the mountpoints in an AVL tree sorted by
6564                  * the special type (dataset name), and walk the result in
6565                  * reverse to make sure to get any snapshots first.
6566                  */
6567                 struct mnttab entry;
6568                 uu_avl_pool_t *pool;
6569                 uu_avl_t *tree = NULL;
6570                 unshare_unmount_node_t *node;
6571                 uu_avl_index_t idx;
6572                 uu_avl_walk_t *walk;
6573
6574                 if (argc != 0) {
6575                         (void) fprintf(stderr, gettext("too many arguments\n"));
6576                         usage(B_FALSE);
6577                 }
6578
6579                 if (((pool = uu_avl_pool_create("unmount_pool",
6580                     sizeof (unshare_unmount_node_t),
6581                     offsetof(unshare_unmount_node_t, un_avlnode),
6582                     unshare_unmount_compare, UU_DEFAULT)) == NULL) ||
6583                     ((tree = uu_avl_create(pool, NULL, UU_DEFAULT)) == NULL))
6584                         nomem();
6585
6586                 rewind(mnttab_file);
6587                 while (getmntent(mnttab_file, &entry) == 0) {
6588
6589                         /* ignore non-ZFS entries */
6590                         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0)
6591                                 continue;
6592
6593                         /* ignore snapshots */
6594                         if (strchr(entry.mnt_special, '@') != NULL)
6595                                 continue;
6596
6597                         if ((zhp = zfs_open(g_zfs, entry.mnt_special,
6598                             ZFS_TYPE_FILESYSTEM)) == NULL) {
6599                                 ret = 1;
6600                                 continue;
6601                         }
6602
6603                         /*
6604                          * Ignore datasets that are excluded/restricted by
6605                          * parent pool name.
6606                          */
6607                         if (zpool_skip_pool(zfs_get_pool_name(zhp))) {
6608                                 zfs_close(zhp);
6609                                 continue;
6610                         }
6611
6612                         switch (op) {
6613                         case OP_SHARE:
6614                                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
6615                                     nfs_mnt_prop,
6616                                     sizeof (nfs_mnt_prop),
6617                                     NULL, NULL, 0, B_FALSE) == 0);
6618                                 if (strcmp(nfs_mnt_prop, "off") != 0)
6619                                         break;
6620                                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
6621                                     nfs_mnt_prop,
6622                                     sizeof (nfs_mnt_prop),
6623                                     NULL, NULL, 0, B_FALSE) == 0);
6624                                 if (strcmp(nfs_mnt_prop, "off") == 0)
6625                                         continue;
6626                                 break;
6627                         case OP_MOUNT:
6628                                 /* Ignore legacy mounts */
6629                                 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT,
6630                                     nfs_mnt_prop,
6631                                     sizeof (nfs_mnt_prop),
6632                                     NULL, NULL, 0, B_FALSE) == 0);
6633                                 if (strcmp(nfs_mnt_prop, "legacy") == 0)
6634                                         continue;
6635                                 /* Ignore canmount=noauto mounts */
6636                                 if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) ==
6637                                     ZFS_CANMOUNT_NOAUTO)
6638                                         continue;
6639                         default:
6640                                 break;
6641                         }
6642
6643                         node = safe_malloc(sizeof (unshare_unmount_node_t));
6644                         node->un_zhp = zhp;
6645                         node->un_mountp = safe_strdup(entry.mnt_mountp);
6646
6647                         uu_avl_node_init(node, &node->un_avlnode, pool);
6648
6649                         if (uu_avl_find(tree, node, NULL, &idx) == NULL) {
6650                                 uu_avl_insert(tree, node, idx);
6651                         } else {
6652                                 zfs_close(node->un_zhp);
6653                                 free(node->un_mountp);
6654                                 free(node);
6655                         }
6656                 }
6657
6658                 /*
6659                  * Walk the AVL tree in reverse, unmounting each filesystem and
6660                  * removing it from the AVL tree in the process.
6661                  */
6662                 if ((walk = uu_avl_walk_start(tree,
6663                     UU_WALK_REVERSE | UU_WALK_ROBUST)) == NULL)
6664                         nomem();
6665
6666                 while ((node = uu_avl_walk_next(walk)) != NULL) {
6667                         uu_avl_remove(tree, node);
6668
6669                         switch (op) {
6670                         case OP_SHARE:
6671                                 if (zfs_unshareall_bypath(node->un_zhp,
6672                                     node->un_mountp) != 0)
6673                                         ret = 1;
6674                                 break;
6675
6676                         case OP_MOUNT:
6677                                 if (zfs_unmount(node->un_zhp,
6678                                     node->un_mountp, flags) != 0)
6679                                         ret = 1;
6680                                 break;
6681                         }
6682
6683                         zfs_close(node->un_zhp);
6684                         free(node->un_mountp);
6685                         free(node);
6686                 }
6687
6688                 uu_avl_walk_end(walk);
6689                 uu_avl_destroy(tree);
6690                 uu_avl_pool_destroy(pool);
6691
6692         } else {
6693                 if (argc != 1) {
6694                         if (argc == 0)
6695                                 (void) fprintf(stderr,
6696                                     gettext("missing filesystem argument\n"));
6697                         else
6698                                 (void) fprintf(stderr,
6699                                     gettext("too many arguments\n"));
6700                         usage(B_FALSE);
6701                 }
6702
6703                 /*
6704                  * We have an argument, but it may be a full path or a ZFS
6705                  * filesystem.  Pass full paths off to unmount_path() (shared by
6706                  * manual_unmount), otherwise open the filesystem and pass to
6707                  * zfs_unmount().
6708                  */
6709                 if (argv[0][0] == '/')
6710                         return (unshare_unmount_path(op, argv[0],
6711                             flags, B_FALSE));
6712
6713                 if ((zhp = zfs_open(g_zfs, argv[0],
6714                     ZFS_TYPE_FILESYSTEM)) == NULL)
6715                         return (1);
6716
6717                 verify(zfs_prop_get(zhp, op == OP_SHARE ?
6718                     ZFS_PROP_SHARENFS : ZFS_PROP_MOUNTPOINT,
6719                     nfs_mnt_prop, sizeof (nfs_mnt_prop), NULL,
6720                     NULL, 0, B_FALSE) == 0);
6721
6722                 switch (op) {
6723                 case OP_SHARE:
6724                         verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
6725                             nfs_mnt_prop,
6726                             sizeof (nfs_mnt_prop),
6727                             NULL, NULL, 0, B_FALSE) == 0);
6728                         verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
6729                             sharesmb, sizeof (sharesmb), NULL, NULL,
6730                             0, B_FALSE) == 0);
6731
6732                         if (strcmp(nfs_mnt_prop, "off") == 0 &&
6733                             strcmp(sharesmb, "off") == 0) {
6734                                 (void) fprintf(stderr, gettext("cannot "
6735                                     "unshare '%s': legacy share\n"),
6736                                     zfs_get_name(zhp));
6737 #ifdef illumos
6738                                 (void) fprintf(stderr, gettext("use "
6739                                     "unshare(1M) to unshare this "
6740                                     "filesystem\n"));
6741 #endif
6742                                 ret = 1;
6743                         } else if (!zfs_is_shared(zhp)) {
6744                                 (void) fprintf(stderr, gettext("cannot "
6745                                     "unshare '%s': not currently "
6746                                     "shared\n"), zfs_get_name(zhp));
6747                                 ret = 1;
6748                         } else if (zfs_unshareall(zhp) != 0) {
6749                                 ret = 1;
6750                         }
6751                         break;
6752
6753                 case OP_MOUNT:
6754                         if (strcmp(nfs_mnt_prop, "legacy") == 0) {
6755                                 (void) fprintf(stderr, gettext("cannot "
6756                                     "unmount '%s': legacy "
6757                                     "mountpoint\n"), zfs_get_name(zhp));
6758                                 (void) fprintf(stderr, gettext("use "
6759                                     "umount(8) to unmount this "
6760                                     "filesystem\n"));
6761                                 ret = 1;
6762                         } else if (!zfs_is_mounted(zhp, NULL)) {
6763                                 (void) fprintf(stderr, gettext("cannot "
6764                                     "unmount '%s': not currently "
6765                                     "mounted\n"),
6766                                     zfs_get_name(zhp));
6767                                 ret = 1;
6768                         } else if (zfs_unmountall(zhp, flags) != 0) {
6769                                 ret = 1;
6770                         }
6771                         break;
6772                 }
6773
6774                 zfs_close(zhp);
6775         }
6776
6777         return (ret);
6778 }
6779
6780 /*
6781  * zfs unmount -a
6782  * zfs unmount filesystem
6783  *
6784  * Unmount all filesystems, or a specific ZFS filesystem.
6785  */
6786 static int
6787 zfs_do_unmount(int argc, char **argv)
6788 {
6789         return (unshare_unmount(OP_MOUNT, argc, argv));
6790 }
6791
6792 /*
6793  * zfs unshare -a
6794  * zfs unshare filesystem
6795  *
6796  * Unshare all filesystems, or a specific ZFS filesystem.
6797  */
6798 static int
6799 zfs_do_unshare(int argc, char **argv)
6800 {
6801         return (unshare_unmount(OP_SHARE, argc, argv));
6802 }
6803
6804 /*
6805  * Attach/detach the given dataset to/from the given jail
6806  */
6807 /* ARGSUSED */
6808 static int
6809 do_jail(int argc, char **argv, int attach)
6810 {
6811         zfs_handle_t *zhp;
6812         int jailid, ret;
6813
6814         /* check number of arguments */
6815         if (argc < 3) {
6816                 (void) fprintf(stderr, gettext("missing argument(s)\n"));
6817                 usage(B_FALSE);
6818         }
6819         if (argc > 3) {
6820                 (void) fprintf(stderr, gettext("too many arguments\n"));
6821                 usage(B_FALSE);
6822         }
6823
6824         jailid = jail_getid(argv[1]);
6825         if (jailid < 0) {
6826                 (void) fprintf(stderr, gettext("invalid jail id or name\n"));
6827                 usage(B_FALSE);
6828         }
6829
6830         zhp = zfs_open(g_zfs, argv[2], ZFS_TYPE_FILESYSTEM);
6831         if (zhp == NULL)
6832                 return (1);
6833
6834         ret = (zfs_jail(zhp, jailid, attach) != 0);
6835
6836         zfs_close(zhp);
6837         return (ret);
6838 }
6839
6840 /*
6841  * zfs jail jailid filesystem
6842  *
6843  * Attach the given dataset to the given jail
6844  */
6845 /* ARGSUSED */
6846 static int
6847 zfs_do_jail(int argc, char **argv)
6848 {
6849
6850         return (do_jail(argc, argv, 1));
6851 }
6852
6853 /*
6854  * zfs unjail jailid filesystem
6855  *
6856  * Detach the given dataset from the given jail
6857  */
6858 /* ARGSUSED */
6859 static int
6860 zfs_do_unjail(int argc, char **argv)
6861 {
6862
6863         return (do_jail(argc, argv, 0));
6864 }
6865
6866 /*
6867  * Called when invoked as /etc/fs/zfs/mount.  Do the mount if the mountpoint is
6868  * 'legacy'.  Otherwise, complain that use should be using 'zfs mount'.
6869  */
6870 static int
6871 manual_mount(int argc, char **argv)
6872 {
6873         zfs_handle_t *zhp;
6874         char mountpoint[ZFS_MAXPROPLEN];
6875         char mntopts[MNT_LINE_MAX] = { '\0' };
6876         int ret = 0;
6877         int c;
6878         int flags = 0;
6879         char *dataset, *path;
6880
6881         /* check options */
6882         while ((c = getopt(argc, argv, ":mo:O")) != -1) {
6883                 switch (c) {
6884                 case 'o':
6885                         (void) strlcpy(mntopts, optarg, sizeof (mntopts));
6886                         break;
6887                 case 'O':
6888                         flags |= MS_OVERLAY;
6889                         break;
6890                 case 'm':
6891                         flags |= MS_NOMNTTAB;
6892                         break;
6893                 case ':':
6894                         (void) fprintf(stderr, gettext("missing argument for "
6895                             "'%c' option\n"), optopt);
6896                         usage(B_FALSE);
6897                         break;
6898                 case '?':
6899                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6900                             optopt);
6901                         (void) fprintf(stderr, gettext("usage: mount [-o opts] "
6902                             "<path>\n"));
6903                         return (2);
6904                 }
6905         }
6906
6907         argc -= optind;
6908         argv += optind;
6909
6910         /* check that we only have two arguments */
6911         if (argc != 2) {
6912                 if (argc == 0)
6913                         (void) fprintf(stderr, gettext("missing dataset "
6914                             "argument\n"));
6915                 else if (argc == 1)
6916                         (void) fprintf(stderr,
6917                             gettext("missing mountpoint argument\n"));
6918                 else
6919                         (void) fprintf(stderr, gettext("too many arguments\n"));
6920                 (void) fprintf(stderr, "usage: mount <dataset> <mountpoint>\n");
6921                 return (2);
6922         }
6923
6924         dataset = argv[0];
6925         path = argv[1];
6926
6927         /* try to open the dataset */
6928         if ((zhp = zfs_open(g_zfs, dataset, ZFS_TYPE_FILESYSTEM)) == NULL)
6929                 return (1);
6930
6931         (void) zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
6932             sizeof (mountpoint), NULL, NULL, 0, B_FALSE);
6933
6934         /* check for legacy mountpoint and complain appropriately */
6935         ret = 0;
6936         if (strcmp(mountpoint, ZFS_MOUNTPOINT_LEGACY) == 0) {
6937                 if (zmount(dataset, path, flags, MNTTYPE_ZFS,
6938                     NULL, 0, mntopts, sizeof (mntopts)) != 0) {
6939                         (void) fprintf(stderr, gettext("mount failed: %s\n"),
6940                             strerror(errno));
6941                         ret = 1;
6942                 }
6943         } else {
6944                 (void) fprintf(stderr, gettext("filesystem '%s' cannot be "
6945                     "mounted using 'mount -t zfs'\n"), dataset);
6946                 (void) fprintf(stderr, gettext("Use 'zfs set mountpoint=%s' "
6947                     "instead.\n"), path);
6948                 (void) fprintf(stderr, gettext("If you must use 'mount -t zfs' "
6949                     "or /etc/fstab, use 'zfs set mountpoint=legacy'.\n"));
6950                 (void) fprintf(stderr, gettext("See zfs(8) for more "
6951                     "information.\n"));
6952                 ret = 1;
6953         }
6954
6955         return (ret);
6956 }
6957
6958 /*
6959  * Called when invoked as /etc/fs/zfs/umount.  Unlike a manual mount, we allow
6960  * unmounts of non-legacy filesystems, as this is the dominant administrative
6961  * interface.
6962  */
6963 static int
6964 manual_unmount(int argc, char **argv)
6965 {
6966         int flags = 0;
6967         int c;
6968
6969         /* check options */
6970         while ((c = getopt(argc, argv, "f")) != -1) {
6971                 switch (c) {
6972                 case 'f':
6973                         flags = MS_FORCE;
6974                         break;
6975                 case '?':
6976                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6977                             optopt);
6978                         (void) fprintf(stderr, gettext("usage: unmount [-f] "
6979                             "<path>\n"));
6980                         return (2);
6981                 }
6982         }
6983
6984         argc -= optind;
6985         argv += optind;
6986
6987         /* check arguments */
6988         if (argc != 1) {
6989                 if (argc == 0)
6990                         (void) fprintf(stderr, gettext("missing path "
6991                             "argument\n"));
6992                 else
6993                         (void) fprintf(stderr, gettext("too many arguments\n"));
6994                 (void) fprintf(stderr, gettext("usage: unmount [-f] <path>\n"));
6995                 return (2);
6996         }
6997
6998         return (unshare_unmount_path(OP_MOUNT, argv[0], flags, B_TRUE));
6999 }
7000
7001 static int
7002 find_command_idx(char *command, int *idx)
7003 {
7004         int i;
7005
7006         for (i = 0; i < NCOMMAND; i++) {
7007                 if (command_table[i].name == NULL)
7008                         continue;
7009
7010                 if (strcmp(command, command_table[i].name) == 0) {
7011                         *idx = i;
7012                         return (0);
7013                 }
7014         }
7015         return (1);
7016 }
7017
7018 static int
7019 zfs_do_diff(int argc, char **argv)
7020 {
7021         zfs_handle_t *zhp;
7022         int flags = 0;
7023         char *tosnap = NULL;
7024         char *fromsnap = NULL;
7025         char *atp, *copy;
7026         int err = 0;
7027         int c;
7028
7029         while ((c = getopt(argc, argv, "FHt")) != -1) {
7030                 switch (c) {
7031                 case 'F':
7032                         flags |= ZFS_DIFF_CLASSIFY;
7033                         break;
7034                 case 'H':
7035                         flags |= ZFS_DIFF_PARSEABLE;
7036                         break;
7037                 case 't':
7038                         flags |= ZFS_DIFF_TIMESTAMP;
7039                         break;
7040                 default:
7041                         (void) fprintf(stderr,
7042                             gettext("invalid option '%c'\n"), optopt);
7043                         usage(B_FALSE);
7044                 }
7045         }
7046
7047         argc -= optind;
7048         argv += optind;
7049
7050         if (argc < 1) {
7051                 (void) fprintf(stderr,
7052                     gettext("must provide at least one snapshot name\n"));
7053                 usage(B_FALSE);
7054         }
7055
7056         if (argc > 2) {
7057                 (void) fprintf(stderr, gettext("too many arguments\n"));
7058                 usage(B_FALSE);
7059         }
7060
7061         fromsnap = argv[0];
7062         tosnap = (argc == 2) ? argv[1] : NULL;
7063
7064         copy = NULL;
7065         if (*fromsnap != '@')
7066                 copy = strdup(fromsnap);
7067         else if (tosnap)
7068                 copy = strdup(tosnap);
7069         if (copy == NULL)
7070                 usage(B_FALSE);
7071
7072         if ((atp = strchr(copy, '@')) != NULL)
7073                 *atp = '\0';
7074
7075         if ((zhp = zfs_open(g_zfs, copy, ZFS_TYPE_FILESYSTEM)) == NULL)
7076                 return (1);
7077
7078         free(copy);
7079
7080         /*
7081          * Ignore SIGPIPE so that the library can give us
7082          * information on any failure
7083          */
7084         (void) sigignore(SIGPIPE);
7085
7086         err = zfs_show_diffs(zhp, STDOUT_FILENO, fromsnap, tosnap, flags);
7087
7088         zfs_close(zhp);
7089
7090         return (err != 0);
7091 }
7092
7093 /*
7094  * zfs remap <filesystem | volume>
7095  *
7096  * Remap the indirect blocks in the given fileystem or volume.
7097  */
7098 static int
7099 zfs_do_remap(int argc, char **argv)
7100 {
7101         const char *fsname;
7102         int err = 0;
7103         int c;
7104
7105         /* check options */
7106         while ((c = getopt(argc, argv, "")) != -1) {
7107                 switch (c) {
7108                 case '?':
7109                         (void) fprintf(stderr,
7110                             gettext("invalid option '%c'\n"), optopt);
7111                         usage(B_FALSE);
7112                 }
7113         }
7114
7115         if (argc != 2) {
7116                 (void) fprintf(stderr, gettext("wrong number of arguments\n"));
7117                 usage(B_FALSE);
7118         }
7119
7120         fsname = argv[1];
7121         err = zfs_remap_indirects(g_zfs, fsname);
7122
7123         return (err);
7124 }
7125
7126 /*
7127  * zfs bookmark <fs@snap> <fs#bmark>
7128  *
7129  * Creates a bookmark with the given name from the given snapshot.
7130  */
7131 static int
7132 zfs_do_bookmark(int argc, char **argv)
7133 {
7134         char snapname[ZFS_MAX_DATASET_NAME_LEN];
7135         zfs_handle_t *zhp;
7136         nvlist_t *nvl;
7137         int ret = 0;
7138         int c;
7139
7140         /* check options */
7141         while ((c = getopt(argc, argv, "")) != -1) {
7142                 switch (c) {
7143                 case '?':
7144                         (void) fprintf(stderr,
7145                             gettext("invalid option '%c'\n"), optopt);
7146                         goto usage;
7147                 }
7148         }
7149
7150         argc -= optind;
7151         argv += optind;
7152
7153         /* check number of arguments */
7154         if (argc < 1) {
7155                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
7156                 goto usage;
7157         }
7158         if (argc < 2) {
7159                 (void) fprintf(stderr, gettext("missing bookmark argument\n"));
7160                 goto usage;
7161         }
7162
7163         if (strchr(argv[1], '#') == NULL) {
7164                 (void) fprintf(stderr,
7165                     gettext("invalid bookmark name '%s' -- "
7166                     "must contain a '#'\n"), argv[1]);
7167                 goto usage;
7168         }
7169
7170         if (argv[0][0] == '@') {
7171                 /*
7172                  * Snapshot name begins with @.
7173                  * Default to same fs as bookmark.
7174                  */
7175                 (void) strncpy(snapname, argv[1], sizeof (snapname));
7176                 *strchr(snapname, '#') = '\0';
7177                 (void) strlcat(snapname, argv[0], sizeof (snapname));
7178         } else {
7179                 (void) strncpy(snapname, argv[0], sizeof (snapname));
7180         }
7181         zhp = zfs_open(g_zfs, snapname, ZFS_TYPE_SNAPSHOT);
7182         if (zhp == NULL)
7183                 goto usage;
7184         zfs_close(zhp);
7185
7186
7187         nvl = fnvlist_alloc();
7188         fnvlist_add_string(nvl, argv[1], snapname);
7189         ret = lzc_bookmark(nvl, NULL);
7190         fnvlist_free(nvl);
7191
7192         if (ret != 0) {
7193                 const char *err_msg;
7194                 char errbuf[1024];
7195
7196                 (void) snprintf(errbuf, sizeof (errbuf),
7197                     dgettext(TEXT_DOMAIN,
7198                     "cannot create bookmark '%s'"), argv[1]);
7199
7200                 switch (ret) {
7201                 case EXDEV:
7202                         err_msg = "bookmark is in a different pool";
7203                         break;
7204                 case EEXIST:
7205                         err_msg = "bookmark exists";
7206                         break;
7207                 case EINVAL:
7208                         err_msg = "invalid argument";
7209                         break;
7210                 case ENOTSUP:
7211                         err_msg = "bookmark feature not enabled";
7212                         break;
7213                 case ENOSPC:
7214                         err_msg = "out of space";
7215                         break;
7216                 default:
7217                         err_msg = "unknown error";
7218                         break;
7219                 }
7220                 (void) fprintf(stderr, "%s: %s\n", errbuf,
7221                     dgettext(TEXT_DOMAIN, err_msg));
7222         }
7223
7224         return (ret != 0);
7225
7226 usage:
7227         usage(B_FALSE);
7228         return (-1);
7229 }
7230
7231 static int
7232 zfs_do_channel_program(int argc, char **argv)
7233 {
7234         int ret, fd;
7235         char c;
7236         char *progbuf, *filename, *poolname;
7237         size_t progsize, progread;
7238         nvlist_t *outnvl;
7239         uint64_t instrlimit = ZCP_DEFAULT_INSTRLIMIT;
7240         uint64_t memlimit = ZCP_DEFAULT_MEMLIMIT;
7241         boolean_t sync_flag = B_TRUE;
7242         zpool_handle_t *zhp;
7243
7244         /* check options */
7245         while (-1 !=
7246             (c = getopt(argc, argv, "nt:(instr-limit)m:(memory-limit)"))) {
7247                 switch (c) {
7248                 case 't':
7249                 case 'm': {
7250                         uint64_t arg;
7251                         char *endp;
7252
7253                         errno = 0;
7254                         arg = strtoull(optarg, &endp, 0);
7255                         if (errno != 0 || *endp != '\0') {
7256                                 (void) fprintf(stderr, gettext(
7257                                     "invalid argument "
7258                                     "'%s': expected integer\n"), optarg);
7259                                 goto usage;
7260                         }
7261
7262                         if (c == 't') {
7263                                 if (arg > ZCP_MAX_INSTRLIMIT || arg == 0) {
7264                                         (void) fprintf(stderr, gettext(
7265                                             "Invalid instruction limit: "
7266                                             "%s\n"), optarg);
7267                                         return (1);
7268                                 } else {
7269                                         instrlimit = arg;
7270                                 }
7271                         } else {
7272                                 ASSERT3U(c, ==, 'm');
7273                                 if (arg > ZCP_MAX_MEMLIMIT || arg == 0) {
7274                                         (void) fprintf(stderr, gettext(
7275                                             "Invalid memory limit: "
7276                                             "%s\n"), optarg);
7277                                         return (1);
7278                                 } else {
7279                                         memlimit = arg;
7280                                 }
7281                         }
7282                         break;
7283                 }
7284                 case 'n': {
7285                         sync_flag = B_FALSE;
7286                         break;
7287                 }
7288                 case '?':
7289                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
7290                             optopt);
7291                         goto usage;
7292                 }
7293         }
7294
7295         argc -= optind;
7296         argv += optind;
7297
7298         if (argc < 2) {
7299                 (void) fprintf(stderr,
7300                     gettext("invalid number of arguments\n"));
7301                 goto usage;
7302         }
7303
7304         poolname = argv[0];
7305         filename = argv[1];
7306         if (strcmp(filename, "-") == 0) {
7307                 fd = 0;
7308                 filename = "standard input";
7309         } else if ((fd = open(filename, O_RDONLY)) < 0) {
7310                 (void) fprintf(stderr, gettext("cannot open '%s': %s\n"),
7311                     filename, strerror(errno));
7312                 return (1);
7313         }
7314
7315         if ((zhp = zpool_open(g_zfs, poolname)) == NULL) {
7316                 (void) fprintf(stderr, gettext("cannot open pool '%s'"),
7317                     poolname);
7318                 return (1);
7319         }
7320         zpool_close(zhp);
7321
7322         /*
7323          * Read in the channel program, expanding the program buffer as
7324          * necessary.
7325          */
7326         progread = 0;
7327         progsize = 1024;
7328         progbuf = safe_malloc(progsize);
7329         do {
7330                 ret = read(fd, progbuf + progread, progsize - progread);
7331                 progread += ret;
7332                 if (progread == progsize && ret > 0) {
7333                         progsize *= 2;
7334                         progbuf = safe_realloc(progbuf, progsize);
7335                 }
7336         } while (ret > 0);
7337
7338         if (fd != 0)
7339                 (void) close(fd);
7340         if (ret < 0) {
7341                 free(progbuf);
7342                 (void) fprintf(stderr,
7343                     gettext("cannot read '%s': %s\n"),
7344                     filename, strerror(errno));
7345                 return (1);
7346         }
7347         progbuf[progread] = '\0';
7348
7349         /*
7350          * Any remaining arguments are passed as arguments to the lua script as
7351          * a string array:
7352          * {
7353          *      "argv" -> [ "arg 1", ... "arg n" ],
7354          * }
7355          */
7356         nvlist_t *argnvl = fnvlist_alloc();
7357         fnvlist_add_string_array(argnvl, ZCP_ARG_CLIARGV, argv + 2, argc - 2);
7358
7359         if (sync_flag) {
7360                 ret = lzc_channel_program(poolname, progbuf,
7361                     instrlimit, memlimit, argnvl, &outnvl);
7362         } else {
7363                 ret = lzc_channel_program_nosync(poolname, progbuf,
7364                     instrlimit, memlimit, argnvl, &outnvl);
7365         }
7366
7367         if (ret != 0) {
7368                 /*
7369                  * On error, report the error message handed back by lua if one
7370                  * exists.  Otherwise, generate an appropriate error message,
7371                  * falling back on strerror() for an unexpected return code.
7372                  */
7373                 char *errstring = NULL;
7374                 if (nvlist_exists(outnvl, ZCP_RET_ERROR)) {
7375                         (void) nvlist_lookup_string(outnvl,
7376                             ZCP_RET_ERROR, &errstring);
7377                         if (errstring == NULL)
7378                                 errstring = strerror(ret);
7379                 } else {
7380                         switch (ret) {
7381                         case EINVAL:
7382                                 errstring =
7383                                     "Invalid instruction or memory limit.";
7384                                 break;
7385                         case ENOMEM:
7386                                 errstring = "Return value too large.";
7387                                 break;
7388                         case ENOSPC:
7389                                 errstring = "Memory limit exhausted.";
7390                                 break;
7391 #ifdef illumos
7392                         case ETIME:
7393 #else
7394                         case ETIMEDOUT:
7395 #endif
7396                                 errstring = "Timed out.";
7397                                 break;
7398                         case EPERM:
7399                                 errstring = "Permission denied. Channel "
7400                                     "programs must be run as root.";
7401                                 break;
7402                         default:
7403                                 errstring = strerror(ret);
7404                         }
7405                 }
7406                 (void) fprintf(stderr,
7407                     gettext("Channel program execution failed:\n%s\n"),
7408                     errstring);
7409         } else {
7410                 (void) printf("Channel program fully executed ");
7411                 if (nvlist_empty(outnvl)) {
7412                         (void) printf("with no return value.\n");
7413                 } else {
7414                         (void) printf("with return value:\n");
7415                         dump_nvlist(outnvl, 4);
7416                 }
7417         }
7418
7419         free(progbuf);
7420         fnvlist_free(outnvl);
7421         fnvlist_free(argnvl);
7422         return (ret != 0);
7423
7424 usage:
7425         usage(B_FALSE);
7426         return (-1);
7427 }
7428
7429 int
7430 main(int argc, char **argv)
7431 {
7432         int ret = 0;
7433         int i;
7434         char *progname;
7435         char *cmdname;
7436
7437         (void) setlocale(LC_ALL, "");
7438         (void) textdomain(TEXT_DOMAIN);
7439
7440         opterr = 0;
7441
7442         if ((g_zfs = libzfs_init()) == NULL) {
7443                 (void) fprintf(stderr, gettext("internal error: failed to "
7444                     "initialize ZFS library\n"));
7445                 return (1);
7446         }
7447
7448         zfs_save_arguments(argc, argv, history_str, sizeof (history_str));
7449
7450         libzfs_print_on_error(g_zfs, B_TRUE);
7451
7452         if ((mnttab_file = fopen(MNTTAB, "r")) == NULL) {
7453                 (void) fprintf(stderr, gettext("internal error: unable to "
7454                     "open %s\n"), MNTTAB);
7455                 return (1);
7456         }
7457
7458         /*
7459          * This command also doubles as the /etc/fs mount and unmount program.
7460          * Determine if we should take this behavior based on argv[0].
7461          */
7462         progname = basename(argv[0]);
7463         if (strcmp(progname, "mount") == 0) {
7464                 ret = manual_mount(argc, argv);
7465         } else if (strcmp(progname, "umount") == 0) {
7466                 ret = manual_unmount(argc, argv);
7467         } else {
7468                 /*
7469                  * Make sure the user has specified some command.
7470                  */
7471                 if (argc < 2) {
7472                         (void) fprintf(stderr, gettext("missing command\n"));
7473                         usage(B_FALSE);
7474                 }
7475
7476                 cmdname = argv[1];
7477
7478                 /*
7479                  * The 'umount' command is an alias for 'unmount'
7480                  */
7481                 if (strcmp(cmdname, "umount") == 0)
7482                         cmdname = "unmount";
7483
7484                 /*
7485                  * The 'recv' command is an alias for 'receive'
7486                  */
7487                 if (strcmp(cmdname, "recv") == 0)
7488                         cmdname = "receive";
7489
7490                 /*
7491                  * The 'snap' command is an alias for 'snapshot'
7492                  */
7493                 if (strcmp(cmdname, "snap") == 0)
7494                         cmdname = "snapshot";
7495
7496                 /*
7497                  * Special case '-?'
7498                  */
7499                 if (strcmp(cmdname, "-?") == 0)
7500                         usage(B_TRUE);
7501
7502                 /*
7503                  * Run the appropriate command.
7504                  */
7505                 libzfs_mnttab_cache(g_zfs, B_TRUE);
7506                 if (find_command_idx(cmdname, &i) == 0) {
7507                         current_command = &command_table[i];
7508                         ret = command_table[i].func(argc - 1, argv + 1);
7509                 } else if (strchr(cmdname, '=') != NULL) {
7510                         verify(find_command_idx("set", &i) == 0);
7511                         current_command = &command_table[i];
7512                         ret = command_table[i].func(argc, argv);
7513                 } else {
7514                         (void) fprintf(stderr, gettext("unrecognized "
7515                             "command '%s'\n"), cmdname);
7516                         usage(B_FALSE);
7517                 }
7518                 libzfs_mnttab_cache(g_zfs, B_FALSE);
7519         }
7520
7521         (void) fclose(mnttab_file);
7522
7523         if (ret == 0 && log_history)
7524                 (void) zpool_log_history(g_zfs, history_str);
7525
7526         libzfs_fini(g_zfs);
7527
7528         /*
7529          * The 'ZFS_ABORT' environment variable causes us to dump core on exit
7530          * for the purposes of running ::findleaks.
7531          */
7532         if (getenv("ZFS_ABORT") != NULL) {
7533                 (void) printf("dumping core by request\n");
7534                 abort();
7535         }
7536
7537         return (ret);
7538 }