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, 2014 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 <pawel@dawidek.net>.
  28  * All rights reserved.
  29  * Copyright (c) 2012 Martin Matuska <mm@FreeBSD.org>. All rights reserved.
  30  * Copyright (c) 2013 Steven Hartland.  All rights reserved.
  31  * Copyright 2013 Nexenta Systems, Inc.  All rights reserved.
  32  */
  33
  34 #include <assert.h>
  35 #include <ctype.h>
  36 #include <errno.h>
  37 #include <libgen.h>
  38 #include <libintl.h>
  39 #include <libuutil.h>
  40 #include <libnvpair.h>
  41 #include <locale.h>
  42 #include <stddef.h>
  43 #include <stdio.h>
  44 #include <stdlib.h>
  45 #include <strings.h>
  46 #include <unistd.h>
  47 #include <fcntl.h>
  48 #include <zone.h>
  49 #include <grp.h>
  50 #include <pwd.h>
  51 #include <signal.h>
  52 #include <sys/list.h>
  53 #include <sys/mntent.h>
  54 #include <sys/mnttab.h>
  55 #include <sys/mount.h>
  56 #include <sys/stat.h>
  57 #include <sys/fs/zfs.h>
  58 #include <sys/types.h>
  59 #include <time.h>
  60 #include <err.h>
  61 #include <jail.h>
  62
  63 #include <libzfs.h>
  64 #include <libzfs_core.h>
  65 #include <zfs_prop.h>
  66 #include <zfs_deleg.h>
  67 #include <libuutil.h>
  68 #ifdef sun
  69 #include <aclutils.h>
  70 #include <directory.h>
  71 #include <idmap.h>
  72 #endif
  73
  74 #include "zfs_iter.h"
  75 #include "zfs_util.h"
  76 #include "zfs_comutil.h"
  77
  78 libzfs_handle_t *g_zfs;
  79
  80 static FILE *mnttab_file;
  81 static char history_str[HIS_MAX_RECORD_LEN];
  82 static boolean_t log_history = B_TRUE;
  83
  84 static int zfs_do_clone(int argc, char **argv);
  85 static int zfs_do_create(int argc, char **argv);
  86 static int zfs_do_destroy(int argc, char **argv);
  87 static int zfs_do_get(int argc, char **argv);
  88 static int zfs_do_inherit(int argc, char **argv);
  89 static int zfs_do_list(int argc, char **argv);
  90 static int zfs_do_mount(int argc, char **argv);
  91 static int zfs_do_rename(int argc, char **argv);
  92 static int zfs_do_rollback(int argc, char **argv);
  93 static int zfs_do_set(int argc, char **argv);
  94 static int zfs_do_upgrade(int argc, char **argv);
  95 static int zfs_do_snapshot(int argc, char **argv);
  96 static int zfs_do_unmount(int argc, char **argv);
  97 static int zfs_do_share(int argc, char **argv);
  98 static int zfs_do_unshare(int argc, char **argv);
  99 static int zfs_do_send(int argc, char **argv);
 100 static int zfs_do_receive(int argc, char **argv);
 101 static int zfs_do_promote(int argc, char **argv);
 102 static int zfs_do_userspace(int argc, char **argv);
 103 static int zfs_do_allow(int argc, char **argv);
 104 static int zfs_do_unallow(int argc, char **argv);
 105 static int zfs_do_hold(int argc, char **argv);
 106 static int zfs_do_holds(int argc, char **argv);
 107 static int zfs_do_release(int argc, char **argv);
 108 static int zfs_do_diff(int argc, char **argv);
 109 static int zfs_do_jail(int argc, char **argv);
 110 static int zfs_do_unjail(int argc, char **argv);
 111 static int zfs_do_bookmark(int argc, char **argv);
 112
 113 /*
 114  * Enable a reasonable set of defaults for libumem debugging on DEBUG builds.
 115  */
 116
 117 #ifdef DEBUG
 118 const char *
 119 _umem_debug_init(void)
 120 {
 121         return ("default,verbose"); /* $UMEM_DEBUG setting */
 122 }
 123
 124 const char *
 125 _umem_logging_init(void)
 126 {
 127         return ("fail,contents"); /* $UMEM_LOGGING setting */
 128 }
 129 #endif
 130
 131 typedef enum {
 132         HELP_CLONE,
 133         HELP_CREATE,
 134         HELP_DESTROY,
 135         HELP_GET,
 136         HELP_INHERIT,
 137         HELP_UPGRADE,
 138         HELP_JAIL,
 139         HELP_UNJAIL,
 140         HELP_LIST,
 141         HELP_MOUNT,
 142         HELP_PROMOTE,
 143         HELP_RECEIVE,
 144         HELP_RENAME,
 145         HELP_ROLLBACK,
 146         HELP_SEND,
 147         HELP_SET,
 148         HELP_SHARE,
 149         HELP_SNAPSHOT,
 150         HELP_UNMOUNT,
 151         HELP_UNSHARE,
 152         HELP_ALLOW,
 153         HELP_UNALLOW,
 154         HELP_USERSPACE,
 155         HELP_GROUPSPACE,
 156         HELP_HOLD,
 157         HELP_HOLDS,
 158         HELP_RELEASE,
 159         HELP_DIFF,
 160         HELP_BOOKMARK,
 161 } zfs_help_t;
 162
 163 typedef struct zfs_command {
 164         const char      *name;
 165         int             (*func)(int argc, char **argv);
 166         zfs_help_t      usage;
 167 } zfs_command_t;
 168
 169 /*
 170  * Master command table.  Each ZFS command has a name, associated function, and
 171  * usage message.  The usage messages need to be internationalized, so we have
 172  * to have a function to return the usage message based on a command index.
 173  *
 174  * These commands are organized according to how they are displayed in the usage
 175  * message.  An empty command (one with a NULL name) indicates an empty line in
 176  * the generic usage message.
 177  */
 178 static zfs_command_t command_table[] = {
 179         { "create",     zfs_do_create,          HELP_CREATE             },
 180         { "destroy",    zfs_do_destroy,         HELP_DESTROY            },
 181         { NULL },
 182         { "snapshot",   zfs_do_snapshot,        HELP_SNAPSHOT           },
 183         { "rollback",   zfs_do_rollback,        HELP_ROLLBACK           },
 184         { "clone",      zfs_do_clone,           HELP_CLONE              },
 185         { "promote",    zfs_do_promote,         HELP_PROMOTE            },
 186         { "rename",     zfs_do_rename,          HELP_RENAME             },
 187         { "bookmark",   zfs_do_bookmark,        HELP_BOOKMARK           },
 188         { NULL },
 189         { "list",       zfs_do_list,            HELP_LIST               },
 190         { NULL },
 191         { "set",        zfs_do_set,             HELP_SET                },
 192         { "get",        zfs_do_get,             HELP_GET                },
 193         { "inherit",    zfs_do_inherit,         HELP_INHERIT            },
 194         { "upgrade",    zfs_do_upgrade,         HELP_UPGRADE            },
 195         { "userspace",  zfs_do_userspace,       HELP_USERSPACE          },
 196         { "groupspace", zfs_do_userspace,       HELP_GROUPSPACE         },
 197         { NULL },
 198         { "mount",      zfs_do_mount,           HELP_MOUNT              },
 199         { "unmount",    zfs_do_unmount,         HELP_UNMOUNT            },
 200         { "share",      zfs_do_share,           HELP_SHARE              },
 201         { "unshare",    zfs_do_unshare,         HELP_UNSHARE            },
 202         { NULL },
 203         { "send",       zfs_do_send,            HELP_SEND               },
 204         { "receive",    zfs_do_receive,         HELP_RECEIVE            },
 205         { NULL },
 206         { "allow",      zfs_do_allow,           HELP_ALLOW              },
 207         { NULL },
 208         { "unallow",    zfs_do_unallow,         HELP_UNALLOW            },
 209         { NULL },
 210         { "hold",       zfs_do_hold,            HELP_HOLD               },
 211         { "holds",      zfs_do_holds,           HELP_HOLDS              },
 212         { "release",    zfs_do_release,         HELP_RELEASE            },
 213         { "diff",       zfs_do_diff,            HELP_DIFF               },
 214         { NULL },
 215         { "jail",       zfs_do_jail,            HELP_JAIL               },
 216         { "unjail",     zfs_do_unjail,          HELP_UNJAIL             },
 217 };
 218
 219 #define NCOMMAND        (sizeof (command_table) / sizeof (command_table[0]))
 220
 221 zfs_command_t *current_command;
 222
 223 static const char *
 224 get_usage(zfs_help_t idx)
 225 {
 226         switch (idx) {
 227         case HELP_CLONE:
 228                 return (gettext("\tclone [-p] [-o property=value] ... "
 229                     "<snapshot> <filesystem|volume>\n"));
 230         case HELP_CREATE:
 231                 return (gettext("\tcreate [-pu] [-o property=value] ... "
 232                     "<filesystem>\n"
 233                     "\tcreate [-ps] [-b blocksize] [-o property=value] ... "
 234                     "-V <size> <volume>\n"));
 235         case HELP_DESTROY:
 236                 return (gettext("\tdestroy [-fnpRrv] <filesystem|volume>\n"
 237                     "\tdestroy [-dnpRrv] "
 238                     "<filesystem|volume>@<snap>[%<snap>][,...]\n"
 239                     "\tdestroy <filesystem|volume>#<bookmark>\n"));
 240         case HELP_GET:
 241                 return (gettext("\tget [-rHp] [-d max] "
 242                     "[-o \"all\" | field[,...]]\n"
 243                     "\t    [-t type[,...]] [-s source[,...]]\n"
 244                     "\t    <\"all\" | property[,...]> "
 245                     "[filesystem|volume|snapshot] ...\n"));
 246         case HELP_INHERIT:
 247                 return (gettext("\tinherit [-rS] <property> "
 248                     "<filesystem|volume|snapshot> ...\n"));
 249         case HELP_UPGRADE:
 250                 return (gettext("\tupgrade [-v]\n"
 251                     "\tupgrade [-r] [-V version] <-a | filesystem ...>\n"));
 252         case HELP_JAIL:
 253                 return (gettext("\tjail <jailid|jailname> <filesystem>\n"));
 254         case HELP_UNJAIL:
 255                 return (gettext("\tunjail <jailid|jailname> <filesystem>\n"));
 256         case HELP_LIST:
 257                 return (gettext("\tlist [-Hp] [-r|-d max] [-o property[,...]] "
 258                     "[-s property]...\n\t    [-S property]... [-t type[,...]] "
 259                     "[filesystem|volume|snapshot] ...\n"));
 260         case HELP_MOUNT:
 261                 return (gettext("\tmount\n"
 262                     "\tmount [-vO] [-o opts] <-a | filesystem>\n"));
 263         case HELP_PROMOTE:
 264                 return (gettext("\tpromote <clone-filesystem>\n"));
 265         case HELP_RECEIVE:
 266                 return (gettext("\treceive|recv [-vnFu] <filesystem|volume|"
 267                 "snapshot>\n"
 268                 "\treceive|recv [-vnFu] [-d | -e] <filesystem>\n"));
 269         case HELP_RENAME:
 270                 return (gettext("\trename [-f] <filesystem|volume|snapshot> "
 271                     "<filesystem|volume|snapshot>\n"
 272                     "\trename [-f] -p <filesystem|volume> <filesystem|volume>\n"
 273                     "\trename -r <snapshot> <snapshot>\n"
 274                     "\trename -u [-p] <filesystem> <filesystem>"));
 275         case HELP_ROLLBACK:
 276                 return (gettext("\trollback [-rRf] <snapshot>\n"));
 277         case HELP_SEND:
 278                 return (gettext("\tsend [-DnPpRvLe] [-[iI] snapshot] "
 279                     "<snapshot>\n"
 280                     "\tsend [-Le] [-i snapshot|bookmark] "
 281                     "<filesystem|volume|snapshot>\n"));
 282         case HELP_SET:
 283                 return (gettext("\tset <property=value> "
 284                     "<filesystem|volume|snapshot> ...\n"));
 285         case HELP_SHARE:
 286                 return (gettext("\tshare <-a | filesystem>\n"));
 287         case HELP_SNAPSHOT:
 288                 return (gettext("\tsnapshot|snap [-r] [-o property=value] ... "
 289                     "<filesystem|volume>@<snap> ...\n"));
 290         case HELP_UNMOUNT:
 291                 return (gettext("\tunmount|umount [-f] "
 292                     "<-a | filesystem|mountpoint>\n"));
 293         case HELP_UNSHARE:
 294                 return (gettext("\tunshare "
 295                     "<-a | filesystem|mountpoint>\n"));
 296         case HELP_ALLOW:
 297                 return (gettext("\tallow <filesystem|volume>\n"
 298                     "\tallow [-ldug] "
 299                     "<\"everyone\"|user|group>[,...] <perm|@setname>[,...]\n"
 300                     "\t    <filesystem|volume>\n"
 301                     "\tallow [-ld] -e <perm|@setname>[,...] "
 302                     "<filesystem|volume>\n"
 303                     "\tallow -c <perm|@setname>[,...] <filesystem|volume>\n"
 304                     "\tallow -s @setname <perm|@setname>[,...] "
 305                     "<filesystem|volume>\n"));
 306         case HELP_UNALLOW:
 307                 return (gettext("\tunallow [-rldug] "
 308                     "<\"everyone\"|user|group>[,...]\n"
 309                     "\t    [<perm|@setname>[,...]] <filesystem|volume>\n"
 310                     "\tunallow [-rld] -e [<perm|@setname>[,...]] "
 311                     "<filesystem|volume>\n"
 312                     "\tunallow [-r] -c [<perm|@setname>[,...]] "
 313                     "<filesystem|volume>\n"
 314                     "\tunallow [-r] -s @setname [<perm|@setname>[,...]] "
 315                     "<filesystem|volume>\n"));
 316         case HELP_USERSPACE:
 317                 return (gettext("\tuserspace [-Hinp] [-o field[,...]] "
 318                     "[-s field] ...\n"
 319                     "\t    [-S field] ... [-t type[,...]] "
 320                     "<filesystem|snapshot>\n"));
 321         case HELP_GROUPSPACE:
 322                 return (gettext("\tgroupspace [-Hinp] [-o field[,...]] "
 323                     "[-s field] ...\n"
 324                     "\t    [-S field] ... [-t type[,...]] "
 325                     "<filesystem|snapshot>\n"));
 326         case HELP_HOLD:
 327                 return (gettext("\thold [-r] <tag> <snapshot> ...\n"));
 328         case HELP_HOLDS:
 329                 return (gettext("\tholds [-r] <snapshot> ...\n"));
 330         case HELP_RELEASE:
 331                 return (gettext("\trelease [-r] <tag> <snapshot> ...\n"));
 332         case HELP_DIFF:
 333                 return (gettext("\tdiff [-FHt] <snapshot> "
 334                     "[snapshot|filesystem]\n"));
 335         case HELP_BOOKMARK:
 336                 return (gettext("\tbookmark <snapshot> <bookmark>\n"));
 337         }
 338
 339         abort();
 340         /* NOTREACHED */
 341 }
 342
 343 void
 344 nomem(void)
 345 {
 346         (void) fprintf(stderr, gettext("internal error: out of memory\n"));
 347         exit(1);
 348 }
 349
 350 /*
 351  * Utility function to guarantee malloc() success.
 352  */
 353
 354 void *
 355 safe_malloc(size_t size)
 356 {
 357         void *data;
 358
 359         if ((data = calloc(1, size)) == NULL)
 360                 nomem();
 361
 362         return (data);
 363 }
 364
 365 static char *
 366 safe_strdup(char *str)
 367 {
 368         char *dupstr = strdup(str);
 369
 370         if (dupstr == NULL)
 371                 nomem();
 372
 373         return (dupstr);
 374 }
 375
 376 /*
 377  * Callback routine that will print out information for each of
 378  * the properties.
 379  */
 380 static int
 381 usage_prop_cb(int prop, void *cb)
 382 {
 383         FILE *fp = cb;
 384
 385         (void) fprintf(fp, "\t%-15s ", zfs_prop_to_name(prop));
 386
 387         if (zfs_prop_readonly(prop))
 388                 (void) fprintf(fp, " NO    ");
 389         else
 390                 (void) fprintf(fp, "YES    ");
 391
 392         if (zfs_prop_inheritable(prop))
 393                 (void) fprintf(fp, "  YES   ");
 394         else
 395                 (void) fprintf(fp, "   NO   ");
 396
 397         if (zfs_prop_values(prop) == NULL)
 398                 (void) fprintf(fp, "-\n");
 399         else
 400                 (void) fprintf(fp, "%s\n", zfs_prop_values(prop));
 401
 402         return (ZPROP_CONT);
 403 }
 404
 405 /*
 406  * Display usage message.  If we're inside a command, display only the usage for
 407  * that command.  Otherwise, iterate over the entire command table and display
 408  * a complete usage message.
 409  */
 410 static void
 411 usage(boolean_t requested)
 412 {
 413         int i;
 414         boolean_t show_properties = B_FALSE;
 415         FILE *fp = requested ? stdout : stderr;
 416
 417         if (current_command == NULL) {
 418
 419                 (void) fprintf(fp, gettext("usage: zfs command args ...\n"));
 420                 (void) fprintf(fp,
 421                     gettext("where 'command' is one of the following:\n\n"));
 422
 423                 for (i = 0; i < NCOMMAND; i++) {
 424                         if (command_table[i].name == NULL)
 425                                 (void) fprintf(fp, "\n");
 426                         else
 427                                 (void) fprintf(fp, "%s",
 428                                     get_usage(command_table[i].usage));
 429                 }
 430
 431                 (void) fprintf(fp, gettext("\nEach dataset is of the form: "
 432                     "pool/[dataset/]*dataset[@name]\n"));
 433         } else {
 434                 (void) fprintf(fp, gettext("usage:\n"));
 435                 (void) fprintf(fp, "%s", get_usage(current_command->usage));
 436         }
 437
 438         if (current_command != NULL &&
 439             (strcmp(current_command->name, "set") == 0 ||
 440             strcmp(current_command->name, "get") == 0 ||
 441             strcmp(current_command->name, "inherit") == 0 ||
 442             strcmp(current_command->name, "list") == 0))
 443                 show_properties = B_TRUE;
 444
 445         if (show_properties) {
 446                 (void) fprintf(fp,
 447                     gettext("\nThe following properties are supported:\n"));
 448
 449                 (void) fprintf(fp, "\n\t%-14s %s  %s   %s\n\n",
 450                     "PROPERTY", "EDIT", "INHERIT", "VALUES");
 451
 452                 /* Iterate over all properties */
 453                 (void) zprop_iter(usage_prop_cb, fp, B_FALSE, B_TRUE,
 454                     ZFS_TYPE_DATASET);
 455
 456                 (void) fprintf(fp, "\t%-15s ", "userused@...");
 457                 (void) fprintf(fp, " NO       NO   <size>\n");
 458                 (void) fprintf(fp, "\t%-15s ", "groupused@...");
 459                 (void) fprintf(fp, " NO       NO   <size>\n");
 460                 (void) fprintf(fp, "\t%-15s ", "userquota@...");
 461                 (void) fprintf(fp, "YES       NO   <size> | none\n");
 462                 (void) fprintf(fp, "\t%-15s ", "groupquota@...");
 463                 (void) fprintf(fp, "YES       NO   <size> | none\n");
 464                 (void) fprintf(fp, "\t%-15s ", "written@<snap>");
 465                 (void) fprintf(fp, " NO       NO   <size>\n");
 466
 467                 (void) fprintf(fp, gettext("\nSizes are specified in bytes "
 468                     "with standard units such as K, M, G, etc.\n"));
 469                 (void) fprintf(fp, gettext("\nUser-defined properties can "
 470                     "be specified by using a name containing a colon (:).\n"));
 471                 (void) fprintf(fp, gettext("\nThe {user|group}{used|quota}@ "
 472                     "properties must be appended with\n"
 473                     "a user or group specifier of one of these forms:\n"
 474                     "    POSIX name      (eg: \"matt\")\n"
 475                     "    POSIX id        (eg: \"126829\")\n"
 476                     "    SMB name@domain (eg: \"matt@sun\")\n"
 477                     "    SMB SID         (eg: \"S-1-234-567-89\")\n"));
 478         } else {
 479                 (void) fprintf(fp,
 480                     gettext("\nFor the property list, run: %s\n"),
 481                     "zfs set|get");
 482                 (void) fprintf(fp,
 483                     gettext("\nFor the delegated permission list, run: %s\n"),
 484                     "zfs allow|unallow");
 485         }
 486
 487         /*
 488          * See comments at end of main().
 489          */
 490         if (getenv("ZFS_ABORT") != NULL) {
 491                 (void) printf("dumping core by request\n");
 492                 abort();
 493         }
 494
 495         exit(requested ? 0 : 2);
 496 }
 497
 498 static int
 499 parseprop(nvlist_t *props, char *propname)
 500 {
 501         char *propval, *strval;
 502
 503         if ((propval = strchr(propname, '=')) == NULL) {
 504                 (void) fprintf(stderr, gettext("missing "
 505                     "'=' for -o option\n"));
 506                 return (-1);
 507         }
 508         *propval = '\0';
 509         propval++;
 510         if (nvlist_lookup_string(props, propname, &strval) == 0) {
 511                 (void) fprintf(stderr, gettext("property '%s' "
 512                     "specified multiple times\n"), propname);
 513                 return (-1);
 514         }
 515         if (nvlist_add_string(props, propname, propval) != 0)
 516                 nomem();
 517         return (0);
 518 }
 519
 520 static int
 521 parse_depth(char *opt, int *flags)
 522 {
 523         char *tmp;
 524         int depth;
 525
 526         depth = (int)strtol(opt, &tmp, 0);
 527         if (*tmp) {
 528                 (void) fprintf(stderr,
 529                     gettext("%s is not an integer\n"), opt);
 530                 usage(B_FALSE);
 531         }
 532         if (depth < 0) {
 533                 (void) fprintf(stderr,
 534                     gettext("Depth can not be negative.\n"));
 535                 usage(B_FALSE);
 536         }
 537         *flags |= (ZFS_ITER_DEPTH_LIMIT|ZFS_ITER_RECURSE);
 538         return (depth);
 539 }
 540
 541 #define PROGRESS_DELAY 2                /* seconds */
 542
 543 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";
 544 static time_t pt_begin;
 545 static char *pt_header = NULL;
 546 static boolean_t pt_shown;
 547
 548 static void
 549 start_progress_timer(void)
 550 {
 551         pt_begin = time(NULL) + PROGRESS_DELAY;
 552         pt_shown = B_FALSE;
 553 }
 554
 555 static void
 556 set_progress_header(char *header)
 557 {
 558         assert(pt_header == NULL);
 559         pt_header = safe_strdup(header);
 560         if (pt_shown) {
 561                 (void) printf("%s: ", header);
 562                 (void) fflush(stdout);
 563         }
 564 }
 565
 566 static void
 567 update_progress(char *update)
 568 {
 569         if (!pt_shown && time(NULL) > pt_begin) {
 570                 int len = strlen(update);
 571
 572                 (void) printf("%s: %s%*.*s", pt_header, update, len, len,
 573                     pt_reverse);
 574                 (void) fflush(stdout);
 575                 pt_shown = B_TRUE;
 576         } else if (pt_shown) {
 577                 int len = strlen(update);
 578
 579                 (void) printf("%s%*.*s", update, len, len, pt_reverse);
 580                 (void) fflush(stdout);
 581         }
 582 }
 583
 584 static void
 585 finish_progress(char *done)
 586 {
 587         if (pt_shown) {
 588                 (void) printf("%s\n", done);
 589                 (void) fflush(stdout);
 590         }
 591         free(pt_header);
 592         pt_header = NULL;
 593 }
 594
 595 /*
 596  * zfs clone [-p] [-o prop=value] ... <snap> <fs | vol>
 597  *
 598  * Given an existing dataset, create a writable copy whose initial contents
 599  * are the same as the source.  The newly created dataset maintains a
 600  * dependency on the original; the original cannot be destroyed so long as
 601  * the clone exists.
 602  *
 603  * The '-p' flag creates all the non-existing ancestors of the target first.
 604  */
 605 static int
 606 zfs_do_clone(int argc, char **argv)
 607 {
 608         zfs_handle_t *zhp = NULL;
 609         boolean_t parents = B_FALSE;
 610         nvlist_t *props;
 611         int ret = 0;
 612         int c;
 613
 614         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
 615                 nomem();
 616
 617         /* check options */
 618         while ((c = getopt(argc, argv, "o:p")) != -1) {
 619                 switch (c) {
 620                 case 'o':
 621                         if (parseprop(props, optarg))
 622                                 return (1);
 623                         break;
 624                 case 'p':
 625                         parents = B_TRUE;
 626                         break;
 627                 case '?':
 628                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
 629                             optopt);
 630                         goto usage;
 631                 }
 632         }
 633
 634         argc -= optind;
 635         argv += optind;
 636
 637         /* check number of arguments */
 638         if (argc < 1) {
 639                 (void) fprintf(stderr, gettext("missing source dataset "
 640                     "argument\n"));
 641                 goto usage;
 642         }
 643         if (argc < 2) {
 644                 (void) fprintf(stderr, gettext("missing target dataset "
 645                     "argument\n"));
 646                 goto usage;
 647         }
 648         if (argc > 2) {
 649                 (void) fprintf(stderr, gettext("too many arguments\n"));
 650                 goto usage;
 651         }
 652
 653         /* open the source dataset */
 654         if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
 655                 return (1);
 656
 657         if (parents && zfs_name_valid(argv[1], ZFS_TYPE_FILESYSTEM |
 658             ZFS_TYPE_VOLUME)) {
 659                 /*
 660                  * Now create the ancestors of the target dataset.  If the
 661                  * target already exists and '-p' option was used we should not
 662                  * complain.
 663                  */
 664                 if (zfs_dataset_exists(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM |
 665                     ZFS_TYPE_VOLUME))
 666                         return (0);
 667                 if (zfs_create_ancestors(g_zfs, argv[1]) != 0)
 668                         return (1);
 669         }
 670
 671         /* pass to libzfs */
 672         ret = zfs_clone(zhp, argv[1], props);
 673
 674         /* create the mountpoint if necessary */
 675         if (ret == 0) {
 676                 zfs_handle_t *clone;
 677
 678                 clone = zfs_open(g_zfs, argv[1], ZFS_TYPE_DATASET);
 679                 if (clone != NULL) {
 680                         if (zfs_get_type(clone) != ZFS_TYPE_VOLUME)
 681                                 if ((ret = zfs_mount(clone, NULL, 0)) == 0)
 682                                         ret = zfs_share(clone);
 683                         zfs_close(clone);
 684                 }
 685         }
 686
 687         zfs_close(zhp);
 688         nvlist_free(props);
 689
 690         return (!!ret);
 691
 692 usage:
 693         if (zhp)
 694                 zfs_close(zhp);
 695         nvlist_free(props);
 696         usage(B_FALSE);
 697         return (-1);
 698 }
 699
 700 /*
 701  * zfs create [-pu] [-o prop=value] ... fs
 702  * zfs create [-ps] [-b blocksize] [-o prop=value] ... -V vol size
 703  *
 704  * Create a new dataset.  This command can be used to create filesystems
 705  * and volumes.  Snapshot creation is handled by 'zfs snapshot'.
 706  * For volumes, the user must specify a size to be used.
 707  *
 708  * The '-s' flag applies only to volumes, and indicates that we should not try
 709  * to set the reservation for this volume.  By default we set a reservation
 710  * equal to the size for any volume.  For pools with SPA_VERSION >=
 711  * SPA_VERSION_REFRESERVATION, we set a refreservation instead.
 712  *
 713  * The '-p' flag creates all the non-existing ancestors of the target first.
 714  *
 715  * The '-u' flag prevents mounting of newly created file system.
 716  */
 717 static int
 718 zfs_do_create(int argc, char **argv)
 719 {
 720         zfs_type_t type = ZFS_TYPE_FILESYSTEM;
 721         zfs_handle_t *zhp = NULL;
 722         uint64_t volsize;
 723         int c;
 724         boolean_t noreserve = B_FALSE;
 725         boolean_t bflag = B_FALSE;
 726         boolean_t parents = B_FALSE;
 727         boolean_t nomount = B_FALSE;
 728         int ret = 1;
 729         nvlist_t *props;
 730         uint64_t intval;
 731         int canmount = ZFS_CANMOUNT_OFF;
 732
 733         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
 734                 nomem();
 735
 736         /* check options */
 737         while ((c = getopt(argc, argv, ":V:b:so:pu")) != -1) {
 738                 switch (c) {
 739                 case 'V':
 740                         type = ZFS_TYPE_VOLUME;
 741                         if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
 742                                 (void) fprintf(stderr, gettext("bad volume "
 743                                     "size '%s': %s\n"), optarg,
 744                                     libzfs_error_description(g_zfs));
 745                                 goto error;
 746                         }
 747
 748                         if (nvlist_add_uint64(props,
 749                             zfs_prop_to_name(ZFS_PROP_VOLSIZE), intval) != 0)
 750                                 nomem();
 751                         volsize = intval;
 752                         break;
 753                 case 'p':
 754                         parents = B_TRUE;
 755                         break;
 756                 case 'b':
 757                         bflag = B_TRUE;
 758                         if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
 759                                 (void) fprintf(stderr, gettext("bad volume "
 760                                     "block size '%s': %s\n"), optarg,
 761                                     libzfs_error_description(g_zfs));
 762                                 goto error;
 763                         }
 764
 765                         if (nvlist_add_uint64(props,
 766                             zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
 767                             intval) != 0)
 768                                 nomem();
 769                         break;
 770                 case 'o':
 771                         if (parseprop(props, optarg))
 772                                 goto error;
 773                         break;
 774                 case 's':
 775                         noreserve = B_TRUE;
 776                         break;
 777                 case 'u':
 778                         nomount = B_TRUE;
 779                         break;
 780                 case ':':
 781                         (void) fprintf(stderr, gettext("missing size "
 782                             "argument\n"));
 783                         goto badusage;
 784                 case '?':
 785                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
 786                             optopt);
 787                         goto badusage;
 788                 }
 789         }
 790
 791         if ((bflag || noreserve) && type != ZFS_TYPE_VOLUME) {
 792                 (void) fprintf(stderr, gettext("'-s' and '-b' can only be "
 793                     "used when creating a volume\n"));
 794                 goto badusage;
 795         }
 796         if (nomount && type != ZFS_TYPE_FILESYSTEM) {
 797                 (void) fprintf(stderr, gettext("'-u' can only be "
 798                     "used when creating a file system\n"));
 799                 goto badusage;
 800         }
 801
 802         argc -= optind;
 803         argv += optind;
 804
 805         /* check number of arguments */
 806         if (argc == 0) {
 807                 (void) fprintf(stderr, gettext("missing %s argument\n"),
 808                     zfs_type_to_name(type));
 809                 goto badusage;
 810         }
 811         if (argc > 1) {
 812                 (void) fprintf(stderr, gettext("too many arguments\n"));
 813                 goto badusage;
 814         }
 815
 816         if (type == ZFS_TYPE_VOLUME && !noreserve) {
 817                 zpool_handle_t *zpool_handle;
 818                 uint64_t spa_version;
 819                 char *p;
 820                 zfs_prop_t resv_prop;
 821                 char *strval;
 822
 823                 if (p = strchr(argv[0], '/'))
 824                         *p = '\0';
 825                 zpool_handle = zpool_open(g_zfs, argv[0]);
 826                 if (p != NULL)
 827                         *p = '/';
 828                 if (zpool_handle == NULL)
 829                         goto error;
 830                 spa_version = zpool_get_prop_int(zpool_handle,
 831                     ZPOOL_PROP_VERSION, NULL);
 832                 zpool_close(zpool_handle);
 833                 if (spa_version >= SPA_VERSION_REFRESERVATION)
 834                         resv_prop = ZFS_PROP_REFRESERVATION;
 835                 else
 836                         resv_prop = ZFS_PROP_RESERVATION;
 837                 volsize = zvol_volsize_to_reservation(volsize, props);
 838
 839                 if (nvlist_lookup_string(props, zfs_prop_to_name(resv_prop),
 840                     &strval) != 0) {
 841                         if (nvlist_add_uint64(props,
 842                             zfs_prop_to_name(resv_prop), volsize) != 0) {
 843                                 nvlist_free(props);
 844                                 nomem();
 845                         }
 846                 }
 847         }
 848
 849         if (parents && zfs_name_valid(argv[0], type)) {
 850                 /*
 851                  * Now create the ancestors of target dataset.  If the target
 852                  * already exists and '-p' option was used we should not
 853                  * complain.
 854                  */
 855                 if (zfs_dataset_exists(g_zfs, argv[0], type)) {
 856                         ret = 0;
 857                         goto error;
 858                 }
 859                 if (zfs_create_ancestors(g_zfs, argv[0]) != 0)
 860                         goto error;
 861         }
 862
 863         /* pass to libzfs */
 864         if (zfs_create(g_zfs, argv[0], type, props) != 0)
 865                 goto error;
 866
 867         if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL)
 868                 goto error;
 869
 870         ret = 0;
 871         /*
 872          * if the user doesn't want the dataset automatically mounted,
 873          * then skip the mount/share step
 874          */
 875         if (zfs_prop_valid_for_type(ZFS_PROP_CANMOUNT, type))
 876                 canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT);
 877
 878         /*
 879          * Mount and/or share the new filesystem as appropriate.  We provide a
 880          * verbose error message to let the user know that their filesystem was
 881          * in fact created, even if we failed to mount or share it.
 882          */
 883         if (!nomount && canmount == ZFS_CANMOUNT_ON) {
 884                 if (zfs_mount(zhp, NULL, 0) != 0) {
 885                         (void) fprintf(stderr, gettext("filesystem "
 886                             "successfully created, but not mounted\n"));
 887                         ret = 1;
 888                 } else if (zfs_share(zhp) != 0) {
 889                         (void) fprintf(stderr, gettext("filesystem "
 890                             "successfully created, but not shared\n"));
 891                         ret = 1;
 892                 }
 893         }
 894
 895 error:
 896         if (zhp)
 897                 zfs_close(zhp);
 898         nvlist_free(props);
 899         return (ret);
 900 badusage:
 901         nvlist_free(props);
 902         usage(B_FALSE);
 903         return (2);
 904 }
 905
 906 /*
 907  * zfs destroy [-rRf] <fs, vol>
 908  * zfs destroy [-rRd] <snap>
 909  *
 910  *      -r      Recursively destroy all children
 911  *      -R      Recursively destroy all dependents, including clones
 912  *      -f      Force unmounting of any dependents
 913  *      -d      If we can't destroy now, mark for deferred destruction
 914  *
 915  * Destroys the given dataset.  By default, it will unmount any filesystems,
 916  * and refuse to destroy a dataset that has any dependents.  A dependent can
 917  * either be a child, or a clone of a child.
 918  */
 919 typedef struct destroy_cbdata {
 920         boolean_t       cb_first;
 921         boolean_t       cb_force;
 922         boolean_t       cb_recurse;
 923         boolean_t       cb_error;
 924         boolean_t       cb_doclones;
 925         zfs_handle_t    *cb_target;
 926         boolean_t       cb_defer_destroy;
 927         boolean_t       cb_verbose;
 928         boolean_t       cb_parsable;
 929         boolean_t       cb_dryrun;
 930         nvlist_t        *cb_nvl;
 931         nvlist_t        *cb_batchedsnaps;
 932
 933         /* first snap in contiguous run */
 934         char            *cb_firstsnap;
 935         /* previous snap in contiguous run */
 936         char            *cb_prevsnap;
 937         int64_t         cb_snapused;
 938         char            *cb_snapspec;
 939         char            *cb_bookmark;
 940 } destroy_cbdata_t;
 941
 942 /*
 943  * Check for any dependents based on the '-r' or '-R' flags.
 944  */
 945 static int
 946 destroy_check_dependent(zfs_handle_t *zhp, void *data)
 947 {
 948         destroy_cbdata_t *cbp = data;
 949         const char *tname = zfs_get_name(cbp->cb_target);
 950         const char *name = zfs_get_name(zhp);
 951
 952         if (strncmp(tname, name, strlen(tname)) == 0 &&
 953             (name[strlen(tname)] == '/' || name[strlen(tname)] == '@')) {
 954                 /*
 955                  * This is a direct descendant, not a clone somewhere else in
 956                  * the hierarchy.
 957                  */
 958                 if (cbp->cb_recurse)
 959                         goto out;
 960
 961                 if (cbp->cb_first) {
 962                         (void) fprintf(stderr, gettext("cannot destroy '%s': "
 963                             "%s has children\n"),
 964                             zfs_get_name(cbp->cb_target),
 965                             zfs_type_to_name(zfs_get_type(cbp->cb_target)));
 966                         (void) fprintf(stderr, gettext("use '-r' to destroy "
 967                             "the following datasets:\n"));
 968                         cbp->cb_first = B_FALSE;
 969                         cbp->cb_error = B_TRUE;
 970                 }
 971
 972                 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
 973         } else {
 974                 /*
 975                  * This is a clone.  We only want to report this if the '-r'
 976                  * wasn't specified, or the target is a snapshot.
 977                  */
 978                 if (!cbp->cb_recurse &&
 979                     zfs_get_type(cbp->cb_target) != ZFS_TYPE_SNAPSHOT)
 980                         goto out;
 981
 982                 if (cbp->cb_first) {
 983                         (void) fprintf(stderr, gettext("cannot destroy '%s': "
 984                             "%s has dependent clones\n"),
 985                             zfs_get_name(cbp->cb_target),
 986                             zfs_type_to_name(zfs_get_type(cbp->cb_target)));
 987                         (void) fprintf(stderr, gettext("use '-R' to destroy "
 988                             "the following datasets:\n"));
 989                         cbp->cb_first = B_FALSE;
 990                         cbp->cb_error = B_TRUE;
 991                         cbp->cb_dryrun = B_TRUE;
 992                 }
 993
 994                 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
 995         }
 996
 997 out:
 998         zfs_close(zhp);
 999         return (0);
1000 }
1001
1002 static int
1003 destroy_callback(zfs_handle_t *zhp, void *data)
1004 {
1005         destroy_cbdata_t *cb = data;
1006         const char *name = zfs_get_name(zhp);
1007
1008         if (cb->cb_verbose) {
1009                 if (cb->cb_parsable) {
1010                         (void) printf("destroy\t%s\n", name);
1011                 } else if (cb->cb_dryrun) {
1012                         (void) printf(gettext("would destroy %s\n"),
1013                             name);
1014                 } else {
1015                         (void) printf(gettext("will destroy %s\n"),
1016                             name);
1017                 }
1018         }
1019
1020         /*
1021          * Ignore pools (which we've already flagged as an error before getting
1022          * here).
1023          */
1024         if (strchr(zfs_get_name(zhp), '/') == NULL &&
1025             zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
1026                 zfs_close(zhp);
1027                 return (0);
1028         }
1029         if (cb->cb_dryrun) {
1030                 zfs_close(zhp);
1031                 return (0);
1032         }
1033
1034         /*
1035          * We batch up all contiguous snapshots (even of different
1036          * filesystems) and destroy them with one ioctl.  We can't
1037          * simply do all snap deletions and then all fs deletions,
1038          * because we must delete a clone before its origin.
1039          */
1040         if (zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT) {
1041                 fnvlist_add_boolean(cb->cb_batchedsnaps, name);
1042         } else {
1043                 int error = zfs_destroy_snaps_nvl(g_zfs,
1044                     cb->cb_batchedsnaps, B_FALSE);
1045                 fnvlist_free(cb->cb_batchedsnaps);
1046                 cb->cb_batchedsnaps = fnvlist_alloc();
1047
1048                 if (error != 0 ||
1049                     zfs_unmount(zhp, NULL, cb->cb_force ? MS_FORCE : 0) != 0 ||
1050                     zfs_destroy(zhp, cb->cb_defer_destroy) != 0) {
1051                         zfs_close(zhp);
1052                         return (-1);
1053                 }
1054         }
1055
1056         zfs_close(zhp);
1057         return (0);
1058 }
1059
1060 static int
1061 destroy_print_cb(zfs_handle_t *zhp, void *arg)
1062 {
1063         destroy_cbdata_t *cb = arg;
1064         const char *name = zfs_get_name(zhp);
1065         int err = 0;
1066
1067         if (nvlist_exists(cb->cb_nvl, name)) {
1068                 if (cb->cb_firstsnap == NULL)
1069                         cb->cb_firstsnap = strdup(name);
1070                 if (cb->cb_prevsnap != NULL)
1071                         free(cb->cb_prevsnap);
1072                 /* this snap continues the current range */
1073                 cb->cb_prevsnap = strdup(name);
1074                 if (cb->cb_firstsnap == NULL || cb->cb_prevsnap == NULL)
1075                         nomem();
1076                 if (cb->cb_verbose) {
1077                         if (cb->cb_parsable) {
1078                                 (void) printf("destroy\t%s\n", name);
1079                         } else if (cb->cb_dryrun) {
1080                                 (void) printf(gettext("would destroy %s\n"),
1081                                     name);
1082                         } else {
1083                                 (void) printf(gettext("will destroy %s\n"),
1084                                     name);
1085                         }
1086                 }
1087         } else if (cb->cb_firstsnap != NULL) {
1088                 /* end of this range */
1089                 uint64_t used = 0;
1090                 err = lzc_snaprange_space(cb->cb_firstsnap,
1091                     cb->cb_prevsnap, &used);
1092                 cb->cb_snapused += used;
1093                 free(cb->cb_firstsnap);
1094                 cb->cb_firstsnap = NULL;
1095                 free(cb->cb_prevsnap);
1096                 cb->cb_prevsnap = NULL;
1097         }
1098         zfs_close(zhp);
1099         return (err);
1100 }
1101
1102 static int
1103 destroy_print_snapshots(zfs_handle_t *fs_zhp, destroy_cbdata_t *cb)
1104 {
1105         int err = 0;
1106         assert(cb->cb_firstsnap == NULL);
1107         assert(cb->cb_prevsnap == NULL);
1108         err = zfs_iter_snapshots_sorted(fs_zhp, destroy_print_cb, cb);
1109         if (cb->cb_firstsnap != NULL) {
1110                 uint64_t used = 0;
1111                 if (err == 0) {
1112                         err = lzc_snaprange_space(cb->cb_firstsnap,
1113                             cb->cb_prevsnap, &used);
1114                 }
1115                 cb->cb_snapused += used;
1116                 free(cb->cb_firstsnap);
1117                 cb->cb_firstsnap = NULL;
1118                 free(cb->cb_prevsnap);
1119                 cb->cb_prevsnap = NULL;
1120         }
1121         return (err);
1122 }
1123
1124 static int
1125 snapshot_to_nvl_cb(zfs_handle_t *zhp, void *arg)
1126 {
1127         destroy_cbdata_t *cb = arg;
1128         int err = 0;
1129
1130         /* Check for clones. */
1131         if (!cb->cb_doclones && !cb->cb_defer_destroy) {
1132                 cb->cb_target = zhp;
1133                 cb->cb_first = B_TRUE;
1134                 err = zfs_iter_dependents(zhp, B_TRUE,
1135                     destroy_check_dependent, cb);
1136         }
1137
1138         if (err == 0) {
1139                 if (nvlist_add_boolean(cb->cb_nvl, zfs_get_name(zhp)))
1140                         nomem();
1141         }
1142         zfs_close(zhp);
1143         return (err);
1144 }
1145
1146 static int
1147 gather_snapshots(zfs_handle_t *zhp, void *arg)
1148 {
1149         destroy_cbdata_t *cb = arg;
1150         int err = 0;
1151
1152         err = zfs_iter_snapspec(zhp, cb->cb_snapspec, snapshot_to_nvl_cb, cb);
1153         if (err == ENOENT)
1154                 err = 0;
1155         if (err != 0)
1156                 goto out;
1157
1158         if (cb->cb_verbose) {
1159                 err = destroy_print_snapshots(zhp, cb);
1160                 if (err != 0)
1161                         goto out;
1162         }
1163
1164         if (cb->cb_recurse)
1165                 err = zfs_iter_filesystems(zhp, gather_snapshots, cb);
1166
1167 out:
1168         zfs_close(zhp);
1169         return (err);
1170 }
1171
1172 static int
1173 destroy_clones(destroy_cbdata_t *cb)
1174 {
1175         nvpair_t *pair;
1176         for (pair = nvlist_next_nvpair(cb->cb_nvl, NULL);
1177             pair != NULL;
1178             pair = nvlist_next_nvpair(cb->cb_nvl, pair)) {
1179                 zfs_handle_t *zhp = zfs_open(g_zfs, nvpair_name(pair),
1180                     ZFS_TYPE_SNAPSHOT);
1181                 if (zhp != NULL) {
1182                         boolean_t defer = cb->cb_defer_destroy;
1183                         int err = 0;
1184
1185                         /*
1186                          * We can't defer destroy non-snapshots, so set it to
1187                          * false while destroying the clones.
1188                          */
1189                         cb->cb_defer_destroy = B_FALSE;
1190                         err = zfs_iter_dependents(zhp, B_FALSE,
1191                             destroy_callback, cb);
1192                         cb->cb_defer_destroy = defer;
1193                         zfs_close(zhp);
1194                         if (err != 0)
1195                                 return (err);
1196                 }
1197         }
1198         return (0);
1199 }
1200
1201 static int
1202 zfs_do_destroy(int argc, char **argv)
1203 {
1204         destroy_cbdata_t cb = { 0 };
1205         int rv = 0;
1206         int err = 0;
1207         int c;
1208         zfs_handle_t *zhp = NULL;
1209         char *at, *pound;
1210         zfs_type_t type = ZFS_TYPE_DATASET;
1211
1212         /* check options */
1213         while ((c = getopt(argc, argv, "vpndfrR")) != -1) {
1214                 switch (c) {
1215                 case 'v':
1216                         cb.cb_verbose = B_TRUE;
1217                         break;
1218                 case 'p':
1219                         cb.cb_verbose = B_TRUE;
1220                         cb.cb_parsable = B_TRUE;
1221                         break;
1222                 case 'n':
1223                         cb.cb_dryrun = B_TRUE;
1224                         break;
1225                 case 'd':
1226                         cb.cb_defer_destroy = B_TRUE;
1227                         type = ZFS_TYPE_SNAPSHOT;
1228                         break;
1229                 case 'f':
1230                         cb.cb_force = B_TRUE;
1231                         break;
1232                 case 'r':
1233                         cb.cb_recurse = B_TRUE;
1234                         break;
1235                 case 'R':
1236                         cb.cb_recurse = B_TRUE;
1237                         cb.cb_doclones = B_TRUE;
1238                         break;
1239                 case '?':
1240                 default:
1241                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1242                             optopt);
1243                         usage(B_FALSE);
1244                 }
1245         }
1246
1247         argc -= optind;
1248         argv += optind;
1249
1250         /* check number of arguments */
1251         if (argc == 0) {
1252                 (void) fprintf(stderr, gettext("missing dataset argument\n"));
1253                 usage(B_FALSE);
1254         }
1255         if (argc > 1) {
1256                 (void) fprintf(stderr, gettext("too many arguments\n"));
1257                 usage(B_FALSE);
1258         }
1259
1260         at = strchr(argv[0], '@');
1261         pound = strchr(argv[0], '#');
1262         if (at != NULL) {
1263
1264                 /* Build the list of snaps to destroy in cb_nvl. */
1265                 cb.cb_nvl = fnvlist_alloc();
1266
1267                 *at = '\0';
1268                 zhp = zfs_open(g_zfs, argv[0],
1269                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
1270                 if (zhp == NULL)
1271                         return (1);
1272
1273                 cb.cb_snapspec = at + 1;
1274                 if (gather_snapshots(zfs_handle_dup(zhp), &cb) != 0 ||
1275                     cb.cb_error) {
1276                         rv = 1;
1277                         goto out;
1278                 }
1279
1280                 if (nvlist_empty(cb.cb_nvl)) {
1281                         (void) fprintf(stderr, gettext("could not find any "
1282                             "snapshots to destroy; check snapshot names.\n"));
1283                         rv = 1;
1284                         goto out;
1285                 }
1286
1287                 if (cb.cb_verbose) {
1288                         char buf[16];
1289                         zfs_nicenum(cb.cb_snapused, buf, sizeof (buf));
1290                         if (cb.cb_parsable) {
1291                                 (void) printf("reclaim\t%llu\n",
1292                                     cb.cb_snapused);
1293                         } else if (cb.cb_dryrun) {
1294                                 (void) printf(gettext("would reclaim %s\n"),
1295                                     buf);
1296                         } else {
1297                                 (void) printf(gettext("will reclaim %s\n"),
1298                                     buf);
1299                         }
1300                 }
1301
1302                 if (!cb.cb_dryrun) {
1303                         if (cb.cb_doclones) {
1304                                 cb.cb_batchedsnaps = fnvlist_alloc();
1305                                 err = destroy_clones(&cb);
1306                                 if (err == 0) {
1307                                         err = zfs_destroy_snaps_nvl(g_zfs,
1308                                             cb.cb_batchedsnaps, B_FALSE);
1309                                 }
1310                                 if (err != 0) {
1311                                         rv = 1;
1312                                         goto out;
1313                                 }
1314                         }
1315                         if (err == 0) {
1316                                 err = zfs_destroy_snaps_nvl(g_zfs, cb.cb_nvl,
1317                                     cb.cb_defer_destroy);
1318                         }
1319                 }
1320
1321                 if (err != 0)
1322                         rv = 1;
1323         } else if (pound != NULL) {
1324                 int err;
1325                 nvlist_t *nvl;
1326
1327                 if (cb.cb_dryrun) {
1328                         (void) fprintf(stderr,
1329                             "dryrun is not supported with bookmark\n");
1330                         return (-1);
1331                 }
1332
1333                 if (cb.cb_defer_destroy) {
1334                         (void) fprintf(stderr,
1335                             "defer destroy is not supported with bookmark\n");
1336                         return (-1);
1337                 }
1338
1339                 if (cb.cb_recurse) {
1340                         (void) fprintf(stderr,
1341                             "recursive is not supported with bookmark\n");
1342                         return (-1);
1343                 }
1344
1345                 if (!zfs_bookmark_exists(argv[0])) {
1346                         (void) fprintf(stderr, gettext("bookmark '%s' "
1347                             "does not exist.\n"), argv[0]);
1348                         return (1);
1349                 }
1350
1351                 nvl = fnvlist_alloc();
1352                 fnvlist_add_boolean(nvl, argv[0]);
1353
1354                 err = lzc_destroy_bookmarks(nvl, NULL);
1355                 if (err != 0) {
1356                         (void) zfs_standard_error(g_zfs, err,
1357                             "cannot destroy bookmark");
1358                 }
1359
1360                 nvlist_free(cb.cb_nvl);
1361
1362                 return (err);
1363         } else {
1364                 /* Open the given dataset */
1365                 if ((zhp = zfs_open(g_zfs, argv[0], type)) == NULL)
1366                         return (1);
1367
1368                 cb.cb_target = zhp;
1369
1370                 /*
1371                  * Perform an explicit check for pools before going any further.
1372                  */
1373                 if (!cb.cb_recurse && strchr(zfs_get_name(zhp), '/') == NULL &&
1374                     zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
1375                         (void) fprintf(stderr, gettext("cannot destroy '%s': "
1376                             "operation does not apply to pools\n"),
1377                             zfs_get_name(zhp));
1378                         (void) fprintf(stderr, gettext("use 'zfs destroy -r "
1379                             "%s' to destroy all datasets in the pool\n"),
1380                             zfs_get_name(zhp));
1381                         (void) fprintf(stderr, gettext("use 'zpool destroy %s' "
1382                             "to destroy the pool itself\n"), zfs_get_name(zhp));
1383                         rv = 1;
1384                         goto out;
1385                 }
1386
1387                 /*
1388                  * Check for any dependents and/or clones.
1389                  */
1390                 cb.cb_first = B_TRUE;
1391                 if (!cb.cb_doclones &&
1392                     zfs_iter_dependents(zhp, B_TRUE, destroy_check_dependent,
1393                     &cb) != 0) {
1394                         rv = 1;
1395                         goto out;
1396                 }
1397
1398                 if (cb.cb_error) {
1399                         rv = 1;
1400                         goto out;
1401                 }
1402
1403                 cb.cb_batchedsnaps = fnvlist_alloc();
1404                 if (zfs_iter_dependents(zhp, B_FALSE, destroy_callback,
1405                     &cb) != 0) {
1406                         rv = 1;
1407                         goto out;
1408                 }
1409
1410                 /*
1411                  * Do the real thing.  The callback will close the
1412                  * handle regardless of whether it succeeds or not.
1413                  */
1414                 err = destroy_callback(zhp, &cb);
1415                 zhp = NULL;
1416                 if (err == 0) {
1417                         err = zfs_destroy_snaps_nvl(g_zfs,
1418                             cb.cb_batchedsnaps, cb.cb_defer_destroy);
1419                 }
1420                 if (err != 0)
1421                         rv = 1;
1422         }
1423
1424 out:
1425         fnvlist_free(cb.cb_batchedsnaps);
1426         fnvlist_free(cb.cb_nvl);
1427         if (zhp != NULL)
1428                 zfs_close(zhp);
1429         return (rv);
1430 }
1431
1432 static boolean_t
1433 is_recvd_column(zprop_get_cbdata_t *cbp)
1434 {
1435         int i;
1436         zfs_get_column_t col;
1437
1438         for (i = 0; i < ZFS_GET_NCOLS &&
1439             (col = cbp->cb_columns[i]) != GET_COL_NONE; i++)
1440                 if (col == GET_COL_RECVD)
1441                         return (B_TRUE);
1442         return (B_FALSE);
1443 }
1444
1445 /*
1446  * zfs get [-rHp] [-o all | field[,field]...] [-s source[,source]...]
1447  *      < all | property[,property]... > < fs | snap | vol > ...
1448  *
1449  *      -r      recurse over any child datasets
1450  *      -H      scripted mode.  Headers are stripped, and fields are separated
1451  *              by tabs instead of spaces.
1452  *      -o      Set of fields to display.  One of "name,property,value,
1453  *              received,source". Default is "name,property,value,source".
1454  *              "all" is an alias for all five.
1455  *      -s      Set of sources to allow.  One of
1456  *              "local,default,inherited,received,temporary,none".  Default is
1457  *              all six.
1458  *      -p      Display values in parsable (literal) format.
1459  *
1460  *  Prints properties for the given datasets.  The user can control which
1461  *  columns to display as well as which property types to allow.
1462  */
1463
1464 /*
1465  * Invoked to display the properties for a single dataset.
1466  */
1467 static int
1468 get_callback(zfs_handle_t *zhp, void *data)
1469 {
1470         char buf[ZFS_MAXPROPLEN];
1471         char rbuf[ZFS_MAXPROPLEN];
1472         zprop_source_t sourcetype;
1473         char source[ZFS_MAXNAMELEN];
1474         zprop_get_cbdata_t *cbp = data;
1475         nvlist_t *user_props = zfs_get_user_props(zhp);
1476         zprop_list_t *pl = cbp->cb_proplist;
1477         nvlist_t *propval;
1478         char *strval;
1479         char *sourceval;
1480         boolean_t received = is_recvd_column(cbp);
1481
1482         for (; pl != NULL; pl = pl->pl_next) {
1483                 char *recvdval = NULL;
1484                 /*
1485                  * Skip the special fake placeholder.  This will also skip over
1486                  * the name property when 'all' is specified.
1487                  */
1488                 if (pl->pl_prop == ZFS_PROP_NAME &&
1489                     pl == cbp->cb_proplist)
1490                         continue;
1491
1492                 if (pl->pl_prop != ZPROP_INVAL) {
1493                         if (zfs_prop_get(zhp, pl->pl_prop, buf,
1494                             sizeof (buf), &sourcetype, source,
1495                             sizeof (source),
1496                             cbp->cb_literal) != 0) {
1497                                 if (pl->pl_all)
1498                                         continue;
1499                                 if (!zfs_prop_valid_for_type(pl->pl_prop,
1500                                     ZFS_TYPE_DATASET)) {
1501                                         (void) fprintf(stderr,
1502                                             gettext("No such property '%s'\n"),
1503                                             zfs_prop_to_name(pl->pl_prop));
1504                                         continue;
1505                                 }
1506                                 sourcetype = ZPROP_SRC_NONE;
1507                                 (void) strlcpy(buf, "-", sizeof (buf));
1508                         }
1509
1510                         if (received && (zfs_prop_get_recvd(zhp,
1511                             zfs_prop_to_name(pl->pl_prop), rbuf, sizeof (rbuf),
1512                             cbp->cb_literal) == 0))
1513                                 recvdval = rbuf;
1514
1515                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1516                             zfs_prop_to_name(pl->pl_prop),
1517                             buf, sourcetype, source, recvdval);
1518                 } else if (zfs_prop_userquota(pl->pl_user_prop)) {
1519                         sourcetype = ZPROP_SRC_LOCAL;
1520
1521                         if (zfs_prop_get_userquota(zhp, pl->pl_user_prop,
1522                             buf, sizeof (buf), cbp->cb_literal) != 0) {
1523                                 sourcetype = ZPROP_SRC_NONE;
1524                                 (void) strlcpy(buf, "-", sizeof (buf));
1525                         }
1526
1527                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1528                             pl->pl_user_prop, buf, sourcetype, source, NULL);
1529                 } else if (zfs_prop_written(pl->pl_user_prop)) {
1530                         sourcetype = ZPROP_SRC_LOCAL;
1531
1532                         if (zfs_prop_get_written(zhp, pl->pl_user_prop,
1533                             buf, sizeof (buf), cbp->cb_literal) != 0) {
1534                                 sourcetype = ZPROP_SRC_NONE;
1535                                 (void) strlcpy(buf, "-", sizeof (buf));
1536                         }
1537
1538                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1539                             pl->pl_user_prop, buf, sourcetype, source, NULL);
1540                 } else {
1541                         if (nvlist_lookup_nvlist(user_props,
1542                             pl->pl_user_prop, &propval) != 0) {
1543                                 if (pl->pl_all)
1544                                         continue;
1545                                 sourcetype = ZPROP_SRC_NONE;
1546                                 strval = "-";
1547                         } else {
1548                                 verify(nvlist_lookup_string(propval,
1549                                     ZPROP_VALUE, &strval) == 0);
1550                                 verify(nvlist_lookup_string(propval,
1551                                     ZPROP_SOURCE, &sourceval) == 0);
1552
1553                                 if (strcmp(sourceval,
1554                                     zfs_get_name(zhp)) == 0) {
1555                                         sourcetype = ZPROP_SRC_LOCAL;
1556                                 } else if (strcmp(sourceval,
1557                                     ZPROP_SOURCE_VAL_RECVD) == 0) {
1558                                         sourcetype = ZPROP_SRC_RECEIVED;
1559                                 } else {
1560                                         sourcetype = ZPROP_SRC_INHERITED;
1561                                         (void) strlcpy(source,
1562                                             sourceval, sizeof (source));
1563                                 }
1564                         }
1565
1566                         if (received && (zfs_prop_get_recvd(zhp,
1567                             pl->pl_user_prop, rbuf, sizeof (rbuf),
1568                             cbp->cb_literal) == 0))
1569                                 recvdval = rbuf;
1570
1571                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1572                             pl->pl_user_prop, strval, sourcetype,
1573                             source, recvdval);
1574                 }
1575         }
1576
1577         return (0);
1578 }
1579
1580 static int
1581 zfs_do_get(int argc, char **argv)
1582 {
1583         zprop_get_cbdata_t cb = { 0 };
1584         int i, c, flags = ZFS_ITER_ARGS_CAN_BE_PATHS;
1585         int types = ZFS_TYPE_DATASET;
1586         char *value, *fields;
1587         int ret = 0;
1588         int limit = 0;
1589         zprop_list_t fake_name = { 0 };
1590
1591         /*
1592          * Set up default columns and sources.
1593          */
1594         cb.cb_sources = ZPROP_SRC_ALL;
1595         cb.cb_columns[0] = GET_COL_NAME;
1596         cb.cb_columns[1] = GET_COL_PROPERTY;
1597         cb.cb_columns[2] = GET_COL_VALUE;
1598         cb.cb_columns[3] = GET_COL_SOURCE;
1599         cb.cb_type = ZFS_TYPE_DATASET;
1600
1601         /* check options */
1602         while ((c = getopt(argc, argv, ":d:o:s:rt:Hp")) != -1) {
1603                 switch (c) {
1604                 case 'p':
1605                         cb.cb_literal = B_TRUE;
1606                         break;
1607                 case 'd':
1608                         limit = parse_depth(optarg, &flags);
1609                         break;
1610                 case 'r':
1611                         flags |= ZFS_ITER_RECURSE;
1612                         break;
1613                 case 'H':
1614                         cb.cb_scripted = B_TRUE;
1615                         break;
1616                 case ':':
1617                         (void) fprintf(stderr, gettext("missing argument for "
1618                             "'%c' option\n"), optopt);
1619                         usage(B_FALSE);
1620                         break;
1621                 case 'o':
1622                         /*
1623                          * Process the set of columns to display.  We zero out
1624                          * the structure to give us a blank slate.
1625                          */
1626                         bzero(&cb.cb_columns, sizeof (cb.cb_columns));
1627                         i = 0;
1628                         while (*optarg != '\0') {
1629                                 static char *col_subopts[] =
1630                                     { "name", "property", "value", "received",
1631                                     "source", "all", NULL };
1632
1633                                 if (i == ZFS_GET_NCOLS) {
1634                                         (void) fprintf(stderr, gettext("too "
1635                                             "many fields given to -o "
1636                                             "option\n"));
1637                                         usage(B_FALSE);
1638                                 }
1639
1640                                 switch (getsubopt(&optarg, col_subopts,
1641                                     &value)) {
1642                                 case 0:
1643                                         cb.cb_columns[i++] = GET_COL_NAME;
1644                                         break;
1645                                 case 1:
1646                                         cb.cb_columns[i++] = GET_COL_PROPERTY;
1647                                         break;
1648                                 case 2:
1649                                         cb.cb_columns[i++] = GET_COL_VALUE;
1650                                         break;
1651                                 case 3:
1652                                         cb.cb_columns[i++] = GET_COL_RECVD;
1653                                         flags |= ZFS_ITER_RECVD_PROPS;
1654                                         break;
1655                                 case 4:
1656                                         cb.cb_columns[i++] = GET_COL_SOURCE;
1657                                         break;
1658                                 case 5:
1659                                         if (i > 0) {
1660                                                 (void) fprintf(stderr,
1661                                                     gettext("\"all\" conflicts "
1662                                                     "with specific fields "
1663                                                     "given to -o option\n"));
1664                                                 usage(B_FALSE);
1665                                         }
1666                                         cb.cb_columns[0] = GET_COL_NAME;
1667                                         cb.cb_columns[1] = GET_COL_PROPERTY;
1668                                         cb.cb_columns[2] = GET_COL_VALUE;
1669                                         cb.cb_columns[3] = GET_COL_RECVD;
1670                                         cb.cb_columns[4] = GET_COL_SOURCE;
1671                                         flags |= ZFS_ITER_RECVD_PROPS;
1672                                         i = ZFS_GET_NCOLS;
1673                                         break;
1674                                 default:
1675                                         (void) fprintf(stderr,
1676                                             gettext("invalid column name "
1677                                             "'%s'\n"), value);
1678                                         usage(B_FALSE);
1679                                 }
1680                         }
1681                         break;
1682
1683                 case 's':
1684                         cb.cb_sources = 0;
1685                         while (*optarg != '\0') {
1686                                 static char *source_subopts[] = {
1687                                         "local", "default", "inherited",
1688                                         "received", "temporary", "none",
1689                                         NULL };
1690
1691                                 switch (getsubopt(&optarg, source_subopts,
1692                                     &value)) {
1693                                 case 0:
1694                                         cb.cb_sources |= ZPROP_SRC_LOCAL;
1695                                         break;
1696                                 case 1:
1697                                         cb.cb_sources |= ZPROP_SRC_DEFAULT;
1698                                         break;
1699                                 case 2:
1700                                         cb.cb_sources |= ZPROP_SRC_INHERITED;
1701                                         break;
1702                                 case 3:
1703                                         cb.cb_sources |= ZPROP_SRC_RECEIVED;
1704                                         break;
1705                                 case 4:
1706                                         cb.cb_sources |= ZPROP_SRC_TEMPORARY;
1707                                         break;
1708                                 case 5:
1709                                         cb.cb_sources |= ZPROP_SRC_NONE;
1710                                         break;
1711                                 default:
1712                                         (void) fprintf(stderr,
1713                                             gettext("invalid source "
1714                                             "'%s'\n"), value);
1715                                         usage(B_FALSE);
1716                                 }
1717                         }
1718                         break;
1719
1720                 case 't':
1721                         types = 0;
1722                         flags &= ~ZFS_ITER_PROP_LISTSNAPS;
1723                         while (*optarg != '\0') {
1724                                 static char *type_subopts[] = { "filesystem",
1725                                     "volume", "snapshot", "bookmark",
1726                                     "all", NULL };
1727
1728                                 switch (getsubopt(&optarg, type_subopts,
1729                                     &value)) {
1730                                 case 0:
1731                                         types |= ZFS_TYPE_FILESYSTEM;
1732                                         break;
1733                                 case 1:
1734                                         types |= ZFS_TYPE_VOLUME;
1735                                         break;
1736                                 case 2:
1737                                         types |= ZFS_TYPE_SNAPSHOT;
1738                                         break;
1739                                 case 3:
1740                                         types |= ZFS_TYPE_BOOKMARK;
1741                                         break;
1742                                 case 4:
1743                                         types = ZFS_TYPE_DATASET |
1744                                             ZFS_TYPE_BOOKMARK;
1745                                         break;
1746
1747                                 default:
1748                                         (void) fprintf(stderr,
1749                                             gettext("invalid type '%s'\n"),
1750                                             value);
1751                                         usage(B_FALSE);
1752                                 }
1753                         }
1754                         break;
1755
1756                 case '?':
1757                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1758                             optopt);
1759                         usage(B_FALSE);
1760                 }
1761         }
1762
1763         argc -= optind;
1764         argv += optind;
1765
1766         if (argc < 1) {
1767                 (void) fprintf(stderr, gettext("missing property "
1768                     "argument\n"));
1769                 usage(B_FALSE);
1770         }
1771
1772         fields = argv[0];
1773
1774         if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
1775             != 0)
1776                 usage(B_FALSE);
1777
1778         argc--;
1779         argv++;
1780
1781         /*
1782          * As part of zfs_expand_proplist(), we keep track of the maximum column
1783          * width for each property.  For the 'NAME' (and 'SOURCE') columns, we
1784          * need to know the maximum name length.  However, the user likely did
1785          * not specify 'name' as one of the properties to fetch, so we need to
1786          * make sure we always include at least this property for
1787          * print_get_headers() to work properly.
1788          */
1789         if (cb.cb_proplist != NULL) {
1790                 fake_name.pl_prop = ZFS_PROP_NAME;
1791                 fake_name.pl_width = strlen(gettext("NAME"));
1792                 fake_name.pl_next = cb.cb_proplist;
1793                 cb.cb_proplist = &fake_name;
1794         }
1795
1796         cb.cb_first = B_TRUE;
1797
1798         /* run for each object */
1799         ret = zfs_for_each(argc, argv, flags, types, NULL,
1800             &cb.cb_proplist, limit, get_callback, &cb);
1801
1802         if (cb.cb_proplist == &fake_name)
1803                 zprop_free_list(fake_name.pl_next);
1804         else
1805                 zprop_free_list(cb.cb_proplist);
1806
1807         return (ret);
1808 }
1809
1810 /*
1811  * inherit [-rS] <property> <fs|vol> ...
1812  *
1813  *      -r      Recurse over all children
1814  *      -S      Revert to received value, if any
1815  *
1816  * For each dataset specified on the command line, inherit the given property
1817  * from its parent.  Inheriting a property at the pool level will cause it to
1818  * use the default value.  The '-r' flag will recurse over all children, and is
1819  * useful for setting a property on a hierarchy-wide basis, regardless of any
1820  * local modifications for each dataset.
1821  */
1822
1823 typedef struct inherit_cbdata {
1824         const char *cb_propname;
1825         boolean_t cb_received;
1826 } inherit_cbdata_t;
1827
1828 static int
1829 inherit_recurse_cb(zfs_handle_t *zhp, void *data)
1830 {
1831         inherit_cbdata_t *cb = data;
1832         zfs_prop_t prop = zfs_name_to_prop(cb->cb_propname);
1833
1834         /*
1835          * If we're doing it recursively, then ignore properties that
1836          * are not valid for this type of dataset.
1837          */
1838         if (prop != ZPROP_INVAL &&
1839             !zfs_prop_valid_for_type(prop, zfs_get_type(zhp)))
1840                 return (0);
1841
1842         return (zfs_prop_inherit(zhp, cb->cb_propname, cb->cb_received) != 0);
1843 }
1844
1845 static int
1846 inherit_cb(zfs_handle_t *zhp, void *data)
1847 {
1848         inherit_cbdata_t *cb = data;
1849
1850         return (zfs_prop_inherit(zhp, cb->cb_propname, cb->cb_received) != 0);
1851 }
1852
1853 static int
1854 zfs_do_inherit(int argc, char **argv)
1855 {
1856         int c;
1857         zfs_prop_t prop;
1858         inherit_cbdata_t cb = { 0 };
1859         char *propname;
1860         int ret = 0;
1861         int flags = 0;
1862         boolean_t received = B_FALSE;
1863
1864         /* check options */
1865         while ((c = getopt(argc, argv, "rS")) != -1) {
1866                 switch (c) {
1867                 case 'r':
1868                         flags |= ZFS_ITER_RECURSE;
1869                         break;
1870                 case 'S':
1871                         received = B_TRUE;
1872                         break;
1873                 case '?':
1874                 default:
1875                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1876                             optopt);
1877                         usage(B_FALSE);
1878                 }
1879         }
1880
1881         argc -= optind;
1882         argv += optind;
1883
1884         /* check number of arguments */
1885         if (argc < 1) {
1886                 (void) fprintf(stderr, gettext("missing property argument\n"));
1887                 usage(B_FALSE);
1888         }
1889         if (argc < 2) {
1890                 (void) fprintf(stderr, gettext("missing dataset argument\n"));
1891                 usage(B_FALSE);
1892         }
1893
1894         propname = argv[0];
1895         argc--;
1896         argv++;
1897
1898         if ((prop = zfs_name_to_prop(propname)) != ZPROP_INVAL) {
1899                 if (zfs_prop_readonly(prop)) {
1900                         (void) fprintf(stderr, gettext(
1901                             "%s property is read-only\n"),
1902                             propname);
1903                         return (1);
1904                 }
1905                 if (!zfs_prop_inheritable(prop) && !received) {
1906                         (void) fprintf(stderr, gettext("'%s' property cannot "
1907                             "be inherited\n"), propname);
1908                         if (prop == ZFS_PROP_QUOTA ||
1909                             prop == ZFS_PROP_RESERVATION ||
1910                             prop == ZFS_PROP_REFQUOTA ||
1911                             prop == ZFS_PROP_REFRESERVATION)
1912                                 (void) fprintf(stderr, gettext("use 'zfs set "
1913                                     "%s=none' to clear\n"), propname);
1914                         return (1);
1915                 }
1916                 if (received && (prop == ZFS_PROP_VOLSIZE ||
1917                     prop == ZFS_PROP_VERSION)) {
1918                         (void) fprintf(stderr, gettext("'%s' property cannot "
1919                             "be reverted to a received value\n"), propname);
1920                         return (1);
1921                 }
1922         } else if (!zfs_prop_user(propname)) {
1923                 (void) fprintf(stderr, gettext("invalid property '%s'\n"),
1924                     propname);
1925                 usage(B_FALSE);
1926         }
1927
1928         cb.cb_propname = propname;
1929         cb.cb_received = received;
1930
1931         if (flags & ZFS_ITER_RECURSE) {
1932                 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
1933                     NULL, NULL, 0, inherit_recurse_cb, &cb);
1934         } else {
1935                 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
1936                     NULL, NULL, 0, inherit_cb, &cb);
1937         }
1938
1939         return (ret);
1940 }
1941
1942 typedef struct upgrade_cbdata {
1943         uint64_t cb_numupgraded;
1944         uint64_t cb_numsamegraded;
1945         uint64_t cb_numfailed;
1946         uint64_t cb_version;
1947         boolean_t cb_newer;
1948         boolean_t cb_foundone;
1949         char cb_lastfs[ZFS_MAXNAMELEN];
1950 } upgrade_cbdata_t;
1951
1952 static int
1953 same_pool(zfs_handle_t *zhp, const char *name)
1954 {
1955         int len1 = strcspn(name, "/@");
1956         const char *zhname = zfs_get_name(zhp);
1957         int len2 = strcspn(zhname, "/@");
1958
1959         if (len1 != len2)
1960                 return (B_FALSE);
1961         return (strncmp(name, zhname, len1) == 0);
1962 }
1963
1964 static int
1965 upgrade_list_callback(zfs_handle_t *zhp, void *data)
1966 {
1967         upgrade_cbdata_t *cb = data;
1968         int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
1969
1970         /* list if it's old/new */
1971         if ((!cb->cb_newer && version < ZPL_VERSION) ||
1972             (cb->cb_newer && version > ZPL_VERSION)) {
1973                 char *str;
1974                 if (cb->cb_newer) {
1975                         str = gettext("The following filesystems are "
1976                             "formatted using a newer software version and\n"
1977                             "cannot be accessed on the current system.\n\n");
1978                 } else {
1979                         str = gettext("The following filesystems are "
1980                             "out of date, and can be upgraded.  After being\n"
1981                             "upgraded, these filesystems (and any 'zfs send' "
1982                             "streams generated from\n"
1983                             "subsequent snapshots) will no longer be "
1984                             "accessible by older software versions.\n\n");
1985                 }
1986
1987                 if (!cb->cb_foundone) {
1988                         (void) puts(str);
1989                         (void) printf(gettext("VER  FILESYSTEM\n"));
1990                         (void) printf(gettext("---  ------------\n"));
1991                         cb->cb_foundone = B_TRUE;
1992                 }
1993
1994                 (void) printf("%2u   %s\n", version, zfs_get_name(zhp));
1995         }
1996
1997         return (0);
1998 }
1999
2000 static int
2001 upgrade_set_callback(zfs_handle_t *zhp, void *data)
2002 {
2003         upgrade_cbdata_t *cb = data;
2004         int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
2005         int needed_spa_version;
2006         int spa_version;
2007
2008         if (zfs_spa_version(zhp, &spa_version) < 0)
2009                 return (-1);
2010
2011         needed_spa_version = zfs_spa_version_map(cb->cb_version);
2012
2013         if (needed_spa_version < 0)
2014                 return (-1);
2015
2016         if (spa_version < needed_spa_version) {
2017                 /* can't upgrade */
2018                 (void) printf(gettext("%s: can not be "
2019                     "upgraded; the pool version needs to first "
2020                     "be upgraded\nto version %d\n\n"),
2021                     zfs_get_name(zhp), needed_spa_version);
2022                 cb->cb_numfailed++;
2023                 return (0);
2024         }
2025
2026         /* upgrade */
2027         if (version < cb->cb_version) {
2028                 char verstr[16];
2029                 (void) snprintf(verstr, sizeof (verstr),
2030                     "%llu", cb->cb_version);
2031                 if (cb->cb_lastfs[0] && !same_pool(zhp, cb->cb_lastfs)) {
2032                         /*
2033                          * If they did "zfs upgrade -a", then we could
2034                          * be doing ioctls to different pools.  We need
2035                          * to log this history once to each pool, and bypass
2036                          * the normal history logging that happens in main().
2037                          */
2038                         (void) zpool_log_history(g_zfs, history_str);
2039                         log_history = B_FALSE;
2040                 }
2041                 if (zfs_prop_set(zhp, "version", verstr) == 0)
2042                         cb->cb_numupgraded++;
2043                 else
2044                         cb->cb_numfailed++;
2045                 (void) strcpy(cb->cb_lastfs, zfs_get_name(zhp));
2046         } else if (version > cb->cb_version) {
2047                 /* can't downgrade */
2048                 (void) printf(gettext("%s: can not be downgraded; "
2049                     "it is already at version %u\n"),
2050                     zfs_get_name(zhp), version);
2051                 cb->cb_numfailed++;
2052         } else {
2053                 cb->cb_numsamegraded++;
2054         }
2055         return (0);
2056 }
2057
2058 /*
2059  * zfs upgrade
2060  * zfs upgrade -v
2061  * zfs upgrade [-r] [-V <version>] <-a | filesystem>
2062  */
2063 static int
2064 zfs_do_upgrade(int argc, char **argv)
2065 {
2066         boolean_t all = B_FALSE;
2067         boolean_t showversions = B_FALSE;
2068         int ret = 0;
2069         upgrade_cbdata_t cb = { 0 };
2070         int c;
2071         int flags = ZFS_ITER_ARGS_CAN_BE_PATHS;
2072
2073         /* check options */
2074         while ((c = getopt(argc, argv, "rvV:a")) != -1) {
2075                 switch (c) {
2076                 case 'r':
2077                         flags |= ZFS_ITER_RECURSE;
2078                         break;
2079                 case 'v':
2080                         showversions = B_TRUE;
2081                         break;
2082                 case 'V':
2083                         if (zfs_prop_string_to_index(ZFS_PROP_VERSION,
2084                             optarg, &cb.cb_version) != 0) {
2085                                 (void) fprintf(stderr,
2086                                     gettext("invalid version %s\n"), optarg);
2087                                 usage(B_FALSE);
2088                         }
2089                         break;
2090                 case 'a':
2091                         all = B_TRUE;
2092                         break;
2093                 case '?':
2094                 default:
2095                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2096                             optopt);
2097                         usage(B_FALSE);
2098                 }
2099         }
2100
2101         argc -= optind;
2102         argv += optind;
2103
2104         if ((!all && !argc) && ((flags & ZFS_ITER_RECURSE) | cb.cb_version))
2105                 usage(B_FALSE);
2106         if (showversions && (flags & ZFS_ITER_RECURSE || all ||
2107             cb.cb_version || argc))
2108                 usage(B_FALSE);
2109         if ((all || argc) && (showversions))
2110                 usage(B_FALSE);
2111         if (all && argc)
2112                 usage(B_FALSE);
2113
2114         if (showversions) {
2115                 /* Show info on available versions. */
2116                 (void) printf(gettext("The following filesystem versions are "
2117                     "supported:\n\n"));
2118                 (void) printf(gettext("VER  DESCRIPTION\n"));
2119                 (void) printf("---  -----------------------------------------"
2120                     "---------------\n");
2121                 (void) printf(gettext(" 1   Initial ZFS filesystem version\n"));
2122                 (void) printf(gettext(" 2   Enhanced directory entries\n"));
2123                 (void) printf(gettext(" 3   Case insensitive and filesystem "
2124                     "user identifier (FUID)\n"));
2125                 (void) printf(gettext(" 4   userquota, groupquota "
2126                     "properties\n"));
2127                 (void) printf(gettext(" 5   System attributes\n"));
2128                 (void) printf(gettext("\nFor more information on a particular "
2129                     "version, including supported releases,\n"));
2130                 (void) printf("see the ZFS Administration Guide.\n\n");
2131                 ret = 0;
2132         } else if (argc || all) {
2133                 /* Upgrade filesystems */
2134                 if (cb.cb_version == 0)
2135                         cb.cb_version = ZPL_VERSION;
2136                 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_FILESYSTEM,
2137                     NULL, NULL, 0, upgrade_set_callback, &cb);
2138                 (void) printf(gettext("%llu filesystems upgraded\n"),
2139                     cb.cb_numupgraded);
2140                 if (cb.cb_numsamegraded) {
2141                         (void) printf(gettext("%llu filesystems already at "
2142                             "this version\n"),
2143                             cb.cb_numsamegraded);
2144                 }
2145                 if (cb.cb_numfailed != 0)
2146                         ret = 1;
2147         } else {
2148                 /* List old-version filesytems */
2149                 boolean_t found;
2150                 (void) printf(gettext("This system is currently running "
2151                     "ZFS filesystem version %llu.\n\n"), ZPL_VERSION);
2152
2153                 flags |= ZFS_ITER_RECURSE;
2154                 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
2155                     NULL, NULL, 0, upgrade_list_callback, &cb);
2156
2157                 found = cb.cb_foundone;
2158                 cb.cb_foundone = B_FALSE;
2159                 cb.cb_newer = B_TRUE;
2160
2161                 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
2162                     NULL, NULL, 0, upgrade_list_callback, &cb);
2163
2164                 if (!cb.cb_foundone && !found) {
2165                         (void) printf(gettext("All filesystems are "
2166                             "formatted with the current version.\n"));
2167                 }
2168         }
2169
2170         return (ret);
2171 }
2172
2173 /*
2174  * zfs userspace [-Hinp] [-o field[,...]] [-s field [-s field]...]
2175  *               [-S field [-S field]...] [-t type[,...]] filesystem | snapshot
2176  * zfs groupspace [-Hinp] [-o field[,...]] [-s field [-s field]...]
2177  *                [-S field [-S field]...] [-t type[,...]] filesystem | snapshot
2178  *
2179  *      -H      Scripted mode; elide headers and separate columns by tabs.
2180  *      -i      Translate SID to POSIX ID.
2181  *      -n      Print numeric ID instead of user/group name.
2182  *      -o      Control which fields to display.
2183  *      -p      Use exact (parsable) numeric output.
2184  *      -s      Specify sort columns, descending order.
2185  *      -S      Specify sort columns, ascending order.
2186  *      -t      Control which object types to display.
2187  *
2188  *      Displays space consumed by, and quotas on, each user in the specified
2189  *      filesystem or snapshot.
2190  */
2191
2192 /* us_field_types, us_field_hdr and us_field_names should be kept in sync */
2193 enum us_field_types {
2194         USFIELD_TYPE,
2195         USFIELD_NAME,
2196         USFIELD_USED,
2197         USFIELD_QUOTA
2198 };
2199 static char *us_field_hdr[] = { "TYPE", "NAME", "USED", "QUOTA" };
2200 static char *us_field_names[] = { "type", "name", "used", "quota" };
2201 #define USFIELD_LAST    (sizeof (us_field_names) / sizeof (char *))
2202
2203 #define USTYPE_PSX_GRP  (1 << 0)
2204 #define USTYPE_PSX_USR  (1 << 1)
2205 #define USTYPE_SMB_GRP  (1 << 2)
2206 #define USTYPE_SMB_USR  (1 << 3)
2207 #define USTYPE_ALL      \
2208         (USTYPE_PSX_GRP | USTYPE_PSX_USR | USTYPE_SMB_GRP | USTYPE_SMB_USR)
2209
2210 static int us_type_bits[] = {
2211         USTYPE_PSX_GRP,
2212         USTYPE_PSX_USR,
2213         USTYPE_SMB_GRP,
2214         USTYPE_SMB_USR,
2215         USTYPE_ALL
2216 };
2217 static char *us_type_names[] = { "posixgroup", "posixuser", "smbgroup",
2218         "smbuser", "all" };
2219
2220 typedef struct us_node {
2221         nvlist_t        *usn_nvl;
2222         uu_avl_node_t   usn_avlnode;
2223         uu_list_node_t  usn_listnode;
2224 } us_node_t;
2225
2226 typedef struct us_cbdata {
2227         nvlist_t        **cb_nvlp;
2228         uu_avl_pool_t   *cb_avl_pool;
2229         uu_avl_t        *cb_avl;
2230         boolean_t       cb_numname;
2231         boolean_t       cb_nicenum;
2232         boolean_t       cb_sid2posix;
2233         zfs_userquota_prop_t cb_prop;
2234         zfs_sort_column_t *cb_sortcol;
2235         size_t          cb_width[USFIELD_LAST];
2236 } us_cbdata_t;
2237
2238 static boolean_t us_populated = B_FALSE;
2239
2240 typedef struct {
2241         zfs_sort_column_t *si_sortcol;
2242         boolean_t       si_numname;
2243 } us_sort_info_t;
2244
2245 static int
2246 us_field_index(char *field)
2247 {
2248         int i;
2249
2250         for (i = 0; i < USFIELD_LAST; i++) {
2251                 if (strcmp(field, us_field_names[i]) == 0)
2252                         return (i);
2253         }
2254
2255         return (-1);
2256 }
2257
2258 static int
2259 us_compare(const void *larg, const void *rarg, void *unused)
2260 {
2261         const us_node_t *l = larg;
2262         const us_node_t *r = rarg;
2263         us_sort_info_t *si = (us_sort_info_t *)unused;
2264         zfs_sort_column_t *sortcol = si->si_sortcol;
2265         boolean_t numname = si->si_numname;
2266         nvlist_t *lnvl = l->usn_nvl;
2267         nvlist_t *rnvl = r->usn_nvl;
2268         int rc = 0;
2269         boolean_t lvb, rvb;
2270
2271         for (; sortcol != NULL; sortcol = sortcol->sc_next) {
2272                 char *lvstr = "";
2273                 char *rvstr = "";
2274                 uint32_t lv32 = 0;
2275                 uint32_t rv32 = 0;
2276                 uint64_t lv64 = 0;
2277                 uint64_t rv64 = 0;
2278                 zfs_prop_t prop = sortcol->sc_prop;
2279                 const char *propname = NULL;
2280                 boolean_t reverse = sortcol->sc_reverse;
2281
2282                 switch (prop) {
2283                 case ZFS_PROP_TYPE:
2284                         propname = "type";
2285                         (void) nvlist_lookup_uint32(lnvl, propname, &lv32);
2286                         (void) nvlist_lookup_uint32(rnvl, propname, &rv32);
2287                         if (rv32 != lv32)
2288                                 rc = (rv32 < lv32) ? 1 : -1;
2289                         break;
2290                 case ZFS_PROP_NAME:
2291                         propname = "name";
2292                         if (numname) {
2293                                 (void) nvlist_lookup_uint64(lnvl, propname,
2294                                     &lv64);
2295                                 (void) nvlist_lookup_uint64(rnvl, propname,
2296                                     &rv64);
2297                                 if (rv64 != lv64)
2298                                         rc = (rv64 < lv64) ? 1 : -1;
2299                         } else {
2300                                 (void) nvlist_lookup_string(lnvl, propname,
2301                                     &lvstr);
2302                                 (void) nvlist_lookup_string(rnvl, propname,
2303                                     &rvstr);
2304                                 rc = strcmp(lvstr, rvstr);
2305                         }
2306                         break;
2307                 case ZFS_PROP_USED:
2308                 case ZFS_PROP_QUOTA:
2309                         if (!us_populated)
2310                                 break;
2311                         if (prop == ZFS_PROP_USED)
2312                                 propname = "used";
2313                         else
2314                                 propname = "quota";
2315                         (void) nvlist_lookup_uint64(lnvl, propname, &lv64);
2316                         (void) nvlist_lookup_uint64(rnvl, propname, &rv64);
2317                         if (rv64 != lv64)
2318                                 rc = (rv64 < lv64) ? 1 : -1;
2319                         break;
2320                 }
2321
2322                 if (rc != 0) {
2323                         if (rc < 0)
2324                                 return (reverse ? 1 : -1);
2325                         else
2326                                 return (reverse ? -1 : 1);
2327                 }
2328         }
2329
2330         /*
2331          * If entries still seem to be the same, check if they are of the same
2332          * type (smbentity is added only if we are doing SID to POSIX ID
2333          * translation where we can have duplicate type/name combinations).
2334          */
2335         if (nvlist_lookup_boolean_value(lnvl, "smbentity", &lvb) == 0 &&
2336             nvlist_lookup_boolean_value(rnvl, "smbentity", &rvb) == 0 &&
2337             lvb != rvb)
2338                 return (lvb < rvb ? -1 : 1);
2339
2340         return (0);
2341 }
2342
2343 static inline const char *
2344 us_type2str(unsigned field_type)
2345 {
2346         switch (field_type) {
2347         case USTYPE_PSX_USR:
2348                 return ("POSIX User");
2349         case USTYPE_PSX_GRP:
2350                 return ("POSIX Group");
2351         case USTYPE_SMB_USR:
2352                 return ("SMB User");
2353         case USTYPE_SMB_GRP:
2354                 return ("SMB Group");
2355         default:
2356                 return ("Undefined");
2357         }
2358 }
2359
2360 static int
2361 userspace_cb(void *arg, const char *domain, uid_t rid, uint64_t space)
2362 {
2363         us_cbdata_t *cb = (us_cbdata_t *)arg;
2364         zfs_userquota_prop_t prop = cb->cb_prop;
2365         char *name = NULL;
2366         char *propname;
2367         char sizebuf[32];
2368         us_node_t *node;
2369         uu_avl_pool_t *avl_pool = cb->cb_avl_pool;
2370         uu_avl_t *avl = cb->cb_avl;
2371         uu_avl_index_t idx;
2372         nvlist_t *props;
2373         us_node_t *n;
2374         zfs_sort_column_t *sortcol = cb->cb_sortcol;
2375         unsigned type;
2376         const char *typestr;
2377         size_t namelen;
2378         size_t typelen;
2379         size_t sizelen;
2380         int typeidx, nameidx, sizeidx;
2381         us_sort_info_t sortinfo = { sortcol, cb->cb_numname };
2382         boolean_t smbentity = B_FALSE;
2383
2384         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
2385                 nomem();
2386         node = safe_malloc(sizeof (us_node_t));
2387         uu_avl_node_init(node, &node->usn_avlnode, avl_pool);
2388         node->usn_nvl = props;
2389
2390         if (domain != NULL && domain[0] != '\0') {
2391                 /* SMB */
2392                 char sid[ZFS_MAXNAMELEN + 32];
2393                 uid_t id;
2394 #ifdef sun
2395                 int err;
2396                 int flag = IDMAP_REQ_FLG_USE_CACHE;
2397 #endif
2398
2399                 smbentity = B_TRUE;
2400
2401                 (void) snprintf(sid, sizeof (sid), "%s-%u", domain, rid);
2402
2403                 if (prop == ZFS_PROP_GROUPUSED || prop == ZFS_PROP_GROUPQUOTA) {
2404                         type = USTYPE_SMB_GRP;
2405 #ifdef sun
2406                         err = sid_to_id(sid, B_FALSE, &id);
2407 #endif
2408                 } else {
2409                         type = USTYPE_SMB_USR;
2410 #ifdef sun
2411                         err = sid_to_id(sid, B_TRUE, &id);
2412 #endif
2413                 }
2414
2415 #ifdef sun
2416                 if (err == 0) {
2417                         rid = id;
2418                         if (!cb->cb_sid2posix) {
2419                                 if (type == USTYPE_SMB_USR) {
2420                                         (void) idmap_getwinnamebyuid(rid, flag,
2421                                             &name, NULL);
2422                                 } else {
2423                                         (void) idmap_getwinnamebygid(rid, flag,
2424                                             &name, NULL);
2425                                 }
2426                                 if (name == NULL)
2427                                         name = sid;
2428                         }
2429                 }
2430 #endif
2431         }
2432
2433         if (cb->cb_sid2posix || domain == NULL || domain[0] == '\0') {
2434                 /* POSIX or -i */
2435                 if (prop == ZFS_PROP_GROUPUSED || prop == ZFS_PROP_GROUPQUOTA) {
2436                         type = USTYPE_PSX_GRP;
2437                         if (!cb->cb_numname) {
2438                                 struct group *g;
2439
2440                                 if ((g = getgrgid(rid)) != NULL)
2441                                         name = g->gr_name;
2442                         }
2443                 } else {
2444                         type = USTYPE_PSX_USR;
2445                         if (!cb->cb_numname) {
2446                                 struct passwd *p;
2447
2448                                 if ((p = getpwuid(rid)) != NULL)
2449                                         name = p->pw_name;
2450                         }
2451                 }
2452         }
2453
2454         /*
2455          * Make sure that the type/name combination is unique when doing
2456          * SID to POSIX ID translation (hence changing the type from SMB to
2457          * POSIX).
2458          */
2459         if (cb->cb_sid2posix &&
2460             nvlist_add_boolean_value(props, "smbentity", smbentity) != 0)
2461                 nomem();
2462
2463         /* Calculate/update width of TYPE field */
2464         typestr = us_type2str(type);
2465         typelen = strlen(gettext(typestr));
2466         typeidx = us_field_index("type");
2467         if (typelen > cb->cb_width[typeidx])
2468                 cb->cb_width[typeidx] = typelen;
2469         if (nvlist_add_uint32(props, "type", type) != 0)
2470                 nomem();
2471
2472         /* Calculate/update width of NAME field */
2473         if ((cb->cb_numname && cb->cb_sid2posix) || name == NULL) {
2474                 if (nvlist_add_uint64(props, "name", rid) != 0)
2475                         nomem();
2476                 namelen = snprintf(NULL, 0, "%u", rid);
2477         } else {
2478                 if (nvlist_add_string(props, "name", name) != 0)
2479                         nomem();
2480                 namelen = strlen(name);
2481         }
2482         nameidx = us_field_index("name");
2483         if (namelen > cb->cb_width[nameidx])
2484                 cb->cb_width[nameidx] = namelen;
2485
2486         /*
2487          * Check if this type/name combination is in the list and update it;
2488          * otherwise add new node to the list.
2489          */
2490         if ((n = uu_avl_find(avl, node, &sortinfo, &idx)) == NULL) {
2491                 uu_avl_insert(avl, node, idx);
2492         } else {
2493                 nvlist_free(props);
2494                 free(node);
2495                 node = n;
2496                 props = node->usn_nvl;
2497         }
2498
2499         /* Calculate/update width of USED/QUOTA fields */
2500         if (cb->cb_nicenum)
2501                 zfs_nicenum(space, sizebuf, sizeof (sizebuf));
2502         else
2503                 (void) snprintf(sizebuf, sizeof (sizebuf), "%llu", space);
2504         sizelen = strlen(sizebuf);
2505         if (prop == ZFS_PROP_USERUSED || prop == ZFS_PROP_GROUPUSED) {
2506                 propname = "used";
2507                 if (!nvlist_exists(props, "quota"))
2508                         (void) nvlist_add_uint64(props, "quota", 0);
2509         } else {
2510                 propname = "quota";
2511                 if (!nvlist_exists(props, "used"))
2512                         (void) nvlist_add_uint64(props, "used", 0);
2513         }
2514         sizeidx = us_field_index(propname);
2515         if (sizelen > cb->cb_width[sizeidx])
2516                 cb->cb_width[sizeidx] = sizelen;
2517
2518         if (nvlist_add_uint64(props, propname, space) != 0)
2519                 nomem();
2520
2521         return (0);
2522 }
2523
2524 static void
2525 print_us_node(boolean_t scripted, boolean_t parsable, int *fields, int types,
2526     size_t *width, us_node_t *node)
2527 {
2528         nvlist_t *nvl = node->usn_nvl;
2529         char valstr[ZFS_MAXNAMELEN];
2530         boolean_t first = B_TRUE;
2531         int cfield = 0;
2532         int field;
2533         uint32_t ustype;
2534
2535         /* Check type */
2536         (void) nvlist_lookup_uint32(nvl, "type", &ustype);
2537         if (!(ustype & types))
2538                 return;
2539
2540         while ((field = fields[cfield]) != USFIELD_LAST) {
2541                 nvpair_t *nvp = NULL;
2542                 data_type_t type;
2543                 uint32_t val32;
2544                 uint64_t val64;
2545                 char *strval = NULL;
2546
2547                 while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
2548                         if (strcmp(nvpair_name(nvp),
2549                             us_field_names[field]) == 0)
2550                                 break;
2551                 }
2552
2553                 type = nvpair_type(nvp);
2554                 switch (type) {
2555                 case DATA_TYPE_UINT32:
2556                         (void) nvpair_value_uint32(nvp, &val32);
2557                         break;
2558                 case DATA_TYPE_UINT64:
2559                         (void) nvpair_value_uint64(nvp, &val64);
2560                         break;
2561                 case DATA_TYPE_STRING:
2562                         (void) nvpair_value_string(nvp, &strval);
2563                         break;
2564                 default:
2565                         (void) fprintf(stderr, "invalid data type\n");
2566                 }
2567
2568                 switch (field) {
2569                 case USFIELD_TYPE:
2570                         strval = (char *)us_type2str(val32);
2571                         break;
2572                 case USFIELD_NAME:
2573                         if (type == DATA_TYPE_UINT64) {
2574                                 (void) sprintf(valstr, "%llu", val64);
2575                                 strval = valstr;
2576                         }
2577                         break;
2578                 case USFIELD_USED:
2579                 case USFIELD_QUOTA:
2580                         if (type == DATA_TYPE_UINT64) {
2581                                 if (parsable) {
2582                                         (void) sprintf(valstr, "%llu", val64);
2583                                 } else {
2584                                         zfs_nicenum(val64, valstr,
2585                                             sizeof (valstr));
2586                                 }
2587                                 if (field == USFIELD_QUOTA &&
2588                                     strcmp(valstr, "0") == 0)
2589                                         strval = "none";
2590                                 else
2591                                         strval = valstr;
2592                         }
2593                         break;
2594                 }
2595
2596                 if (!first) {
2597                         if (scripted)
2598                                 (void) printf("\t");
2599                         else
2600                                 (void) printf("  ");
2601                 }
2602                 if (scripted)
2603                         (void) printf("%s", strval);
2604                 else if (field == USFIELD_TYPE || field == USFIELD_NAME)
2605                         (void) printf("%-*s", width[field], strval);
2606                 else
2607                         (void) printf("%*s", width[field], strval);
2608
2609                 first = B_FALSE;
2610                 cfield++;
2611         }
2612
2613         (void) printf("\n");
2614 }
2615
2616 static void
2617 print_us(boolean_t scripted, boolean_t parsable, int *fields, int types,
2618     size_t *width, boolean_t rmnode, uu_avl_t *avl)
2619 {
2620         us_node_t *node;
2621         const char *col;
2622         int cfield = 0;
2623         int field;
2624
2625         if (!scripted) {
2626                 boolean_t first = B_TRUE;
2627
2628                 while ((field = fields[cfield]) != USFIELD_LAST) {
2629                         col = gettext(us_field_hdr[field]);
2630                         if (field == USFIELD_TYPE || field == USFIELD_NAME) {
2631                                 (void) printf(first ? "%-*s" : "  %-*s",
2632                                     width[field], col);
2633                         } else {
2634                                 (void) printf(first ? "%*s" : "  %*s",
2635                                     width[field], col);
2636                         }
2637                         first = B_FALSE;
2638                         cfield++;
2639                 }
2640                 (void) printf("\n");
2641         }
2642
2643         for (node = uu_avl_first(avl); node; node = uu_avl_next(avl, node)) {
2644                 print_us_node(scripted, parsable, fields, types, width, node);
2645                 if (rmnode)
2646                         nvlist_free(node->usn_nvl);
2647         }
2648 }
2649
2650 static int
2651 zfs_do_userspace(int argc, char **argv)
2652 {
2653         zfs_handle_t *zhp;
2654         zfs_userquota_prop_t p;
2655
2656         uu_avl_pool_t *avl_pool;
2657         uu_avl_t *avl_tree;
2658         uu_avl_walk_t *walk;
2659         char *delim;
2660         char deffields[] = "type,name,used,quota";
2661         char *ofield = NULL;
2662         char *tfield = NULL;
2663         int cfield = 0;
2664         int fields[256];
2665         int i;
2666         boolean_t scripted = B_FALSE;
2667         boolean_t prtnum = B_FALSE;
2668         boolean_t parsable = B_FALSE;
2669         boolean_t sid2posix = B_FALSE;
2670         int ret = 0;
2671         int c;
2672         zfs_sort_column_t *sortcol = NULL;
2673         int types = USTYPE_PSX_USR | USTYPE_SMB_USR;
2674         us_cbdata_t cb;
2675         us_node_t *node;
2676         us_node_t *rmnode;
2677         uu_list_pool_t *listpool;
2678         uu_list_t *list;
2679         uu_avl_index_t idx = 0;
2680         uu_list_index_t idx2 = 0;
2681
2682         if (argc < 2)
2683                 usage(B_FALSE);
2684
2685         if (strcmp(argv[0], "groupspace") == 0)
2686                 /* Toggle default group types */
2687                 types = USTYPE_PSX_GRP | USTYPE_SMB_GRP;
2688
2689         while ((c = getopt(argc, argv, "nHpo:s:S:t:i")) != -1) {
2690                 switch (c) {
2691                 case 'n':
2692                         prtnum = B_TRUE;
2693                         break;
2694                 case 'H':
2695                         scripted = B_TRUE;
2696                         break;
2697                 case 'p':
2698                         parsable = B_TRUE;
2699                         break;
2700                 case 'o':
2701                         ofield = optarg;
2702                         break;
2703                 case 's':
2704                 case 'S':
2705                         if (zfs_add_sort_column(&sortcol, optarg,
2706                             c == 's' ? B_FALSE : B_TRUE) != 0) {
2707                                 (void) fprintf(stderr,
2708                                     gettext("invalid field '%s'\n"), optarg);
2709                                 usage(B_FALSE);
2710                         }
2711                         break;
2712                 case 't':
2713                         tfield = optarg;
2714                         break;
2715                 case 'i':
2716                         sid2posix = B_TRUE;
2717                         break;
2718                 case ':':
2719                         (void) fprintf(stderr, gettext("missing argument for "
2720                             "'%c' option\n"), optopt);
2721                         usage(B_FALSE);
2722                         break;
2723                 case '?':
2724                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2725                             optopt);
2726                         usage(B_FALSE);
2727                 }
2728         }
2729
2730         argc -= optind;
2731         argv += optind;
2732
2733         if (argc < 1) {
2734                 (void) fprintf(stderr, gettext("missing dataset name\n"));
2735                 usage(B_FALSE);
2736         }
2737         if (argc > 1) {
2738                 (void) fprintf(stderr, gettext("too many arguments\n"));
2739                 usage(B_FALSE);
2740         }
2741
2742         /* Use default output fields if not specified using -o */
2743         if (ofield == NULL)
2744                 ofield = deffields;
2745         do {
2746                 if ((delim = strchr(ofield, ',')) != NULL)
2747                         *delim = '\0';
2748                 if ((fields[cfield++] = us_field_index(ofield)) == -1) {
2749                         (void) fprintf(stderr, gettext("invalid type '%s' "
2750                             "for -o option\n"), ofield);
2751                         return (-1);
2752                 }
2753                 if (delim != NULL)
2754                         ofield = delim + 1;
2755         } while (delim != NULL);
2756         fields[cfield] = USFIELD_LAST;
2757
2758         /* Override output types (-t option) */
2759         if (tfield != NULL) {
2760                 types = 0;
2761
2762                 do {
2763                         boolean_t found = B_FALSE;
2764
2765                         if ((delim = strchr(tfield, ',')) != NULL)
2766                                 *delim = '\0';
2767                         for (i = 0; i < sizeof (us_type_bits) / sizeof (int);
2768                             i++) {
2769                                 if (strcmp(tfield, us_type_names[i]) == 0) {
2770                                         found = B_TRUE;
2771                                         types |= us_type_bits[i];
2772                                         break;
2773                                 }
2774                         }
2775                         if (!found) {
2776                                 (void) fprintf(stderr, gettext("invalid type "
2777                                     "'%s' for -t option\n"), tfield);
2778                                 return (-1);
2779                         }
2780                         if (delim != NULL)
2781                                 tfield = delim + 1;
2782                 } while (delim != NULL);
2783         }
2784
2785         if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL)
2786                 return (1);
2787
2788         if ((avl_pool = uu_avl_pool_create("us_avl_pool", sizeof (us_node_t),
2789             offsetof(us_node_t, usn_avlnode), us_compare, UU_DEFAULT)) == NULL)
2790                 nomem();
2791         if ((avl_tree = uu_avl_create(avl_pool, NULL, UU_DEFAULT)) == NULL)
2792                 nomem();
2793
2794         /* Always add default sorting columns */
2795         (void) zfs_add_sort_column(&sortcol, "type", B_FALSE);
2796         (void) zfs_add_sort_column(&sortcol, "name", B_FALSE);
2797
2798         cb.cb_sortcol = sortcol;
2799         cb.cb_numname = prtnum;
2800         cb.cb_nicenum = !parsable;
2801         cb.cb_avl_pool = avl_pool;
2802         cb.cb_avl = avl_tree;
2803         cb.cb_sid2posix = sid2posix;
2804
2805         for (i = 0; i < USFIELD_LAST; i++)
2806                 cb.cb_width[i] = strlen(gettext(us_field_hdr[i]));
2807
2808         for (p = 0; p < ZFS_NUM_USERQUOTA_PROPS; p++) {
2809                 if (((p == ZFS_PROP_USERUSED || p == ZFS_PROP_USERQUOTA) &&
2810                     !(types & (USTYPE_PSX_USR | USTYPE_SMB_USR))) ||
2811                     ((p == ZFS_PROP_GROUPUSED || p == ZFS_PROP_GROUPQUOTA) &&
2812                     !(types & (USTYPE_PSX_GRP | USTYPE_SMB_GRP))))
2813                         continue;
2814                 cb.cb_prop = p;
2815                 if ((ret = zfs_userspace(zhp, p, userspace_cb, &cb)) != 0)
2816                         return (ret);
2817         }
2818
2819         /* Sort the list */
2820         if ((node = uu_avl_first(avl_tree)) == NULL)
2821                 return (0);
2822
2823         us_populated = B_TRUE;
2824
2825         listpool = uu_list_pool_create("tmplist", sizeof (us_node_t),
2826             offsetof(us_node_t, usn_listnode), NULL, UU_DEFAULT);
2827         list = uu_list_create(listpool, NULL, UU_DEFAULT);
2828         uu_list_node_init(node, &node->usn_listnode, listpool);
2829
2830         while (node != NULL) {
2831                 rmnode = node;
2832                 node = uu_avl_next(avl_tree, node);
2833                 uu_avl_remove(avl_tree, rmnode);
2834                 if (uu_list_find(list, rmnode, NULL, &idx2) == NULL)
2835                         uu_list_insert(list, rmnode, idx2);
2836         }
2837
2838         for (node = uu_list_first(list); node != NULL;
2839             node = uu_list_next(list, node)) {
2840                 us_sort_info_t sortinfo = { sortcol, cb.cb_numname };
2841
2842                 if (uu_avl_find(avl_tree, node, &sortinfo, &idx) == NULL)
2843                         uu_avl_insert(avl_tree, node, idx);
2844         }
2845
2846         uu_list_destroy(list);
2847         uu_list_pool_destroy(listpool);
2848
2849         /* Print and free node nvlist memory */
2850         print_us(scripted, parsable, fields, types, cb.cb_width, B_TRUE,
2851             cb.cb_avl);
2852
2853         zfs_free_sort_columns(sortcol);
2854
2855         /* Clean up the AVL tree */
2856         if ((walk = uu_avl_walk_start(cb.cb_avl, UU_WALK_ROBUST)) == NULL)
2857                 nomem();
2858
2859         while ((node = uu_avl_walk_next(walk)) != NULL) {
2860                 uu_avl_remove(cb.cb_avl, node);
2861                 free(node);
2862         }
2863
2864         uu_avl_walk_end(walk);
2865         uu_avl_destroy(avl_tree);
2866         uu_avl_pool_destroy(avl_pool);
2867
2868         return (ret);
2869 }
2870
2871 /*
2872  * list [-Hp][-r|-d max] [-o property[,...]] [-s property] ... [-S property] ...
2873  *      [-t type[,...]] [filesystem|volume|snapshot] ...
2874  *
2875  *      -H      Scripted mode; elide headers and separate columns by tabs.
2876  *      -p      Display values in parsable (literal) format.
2877  *      -r      Recurse over all children.
2878  *      -d      Limit recursion by depth.
2879  *      -o      Control which fields to display.
2880  *      -s      Specify sort columns, descending order.
2881  *      -S      Specify sort columns, ascending order.
2882  *      -t      Control which object types to display.
2883  *
2884  * When given no arguments, list all filesystems in the system.
2885  * Otherwise, list the specified datasets, optionally recursing down them if
2886  * '-r' is specified.
2887  */
2888 typedef struct list_cbdata {
2889         boolean_t       cb_first;
2890         boolean_t       cb_literal;
2891         boolean_t       cb_scripted;
2892         zprop_list_t    *cb_proplist;
2893 } list_cbdata_t;
2894
2895 /*
2896  * Given a list of columns to display, output appropriate headers for each one.
2897  */
2898 static void
2899 print_header(list_cbdata_t *cb)
2900 {
2901         zprop_list_t *pl = cb->cb_proplist;
2902         char headerbuf[ZFS_MAXPROPLEN];
2903         const char *header;
2904         int i;
2905         boolean_t first = B_TRUE;
2906         boolean_t right_justify;
2907
2908         for (; pl != NULL; pl = pl->pl_next) {
2909                 if (!first) {
2910                         (void) printf("  ");
2911                 } else {
2912                         first = B_FALSE;
2913                 }
2914
2915                 right_justify = B_FALSE;
2916                 if (pl->pl_prop != ZPROP_INVAL) {
2917                         header = zfs_prop_column_name(pl->pl_prop);
2918                         right_justify = zfs_prop_align_right(pl->pl_prop);
2919                 } else {
2920                         for (i = 0; pl->pl_user_prop[i] != '\0'; i++)
2921                                 headerbuf[i] = toupper(pl->pl_user_prop[i]);
2922                         headerbuf[i] = '\0';
2923                         header = headerbuf;
2924                 }
2925
2926                 if (pl->pl_next == NULL && !right_justify)
2927                         (void) printf("%s", header);
2928                 else if (right_justify)
2929                         (void) printf("%*s", pl->pl_width, header);
2930                 else
2931                         (void) printf("%-*s", pl->pl_width, header);
2932         }
2933
2934         (void) printf("\n");
2935 }
2936
2937 /*
2938  * Given a dataset and a list of fields, print out all the properties according
2939  * to the described layout.
2940  */
2941 static void
2942 print_dataset(zfs_handle_t *zhp, list_cbdata_t *cb)
2943 {
2944         zprop_list_t *pl = cb->cb_proplist;
2945         boolean_t first = B_TRUE;
2946         char property[ZFS_MAXPROPLEN];
2947         nvlist_t *userprops = zfs_get_user_props(zhp);
2948         nvlist_t *propval;
2949         char *propstr;
2950         boolean_t right_justify;
2951
2952         for (; pl != NULL; pl = pl->pl_next) {
2953                 if (!first) {
2954                         if (cb->cb_scripted)
2955                                 (void) printf("\t");
2956                         else
2957                                 (void) printf("  ");
2958                 } else {
2959                         first = B_FALSE;
2960                 }
2961
2962                 if (pl->pl_prop == ZFS_PROP_NAME) {
2963                         (void) strlcpy(property, zfs_get_name(zhp),
2964                             sizeof(property));
2965                         propstr = property;
2966                         right_justify = zfs_prop_align_right(pl->pl_prop);
2967                 } else if (pl->pl_prop != ZPROP_INVAL) {
2968                         if (zfs_prop_get(zhp, pl->pl_prop, property,
2969                             sizeof (property), NULL, NULL, 0,
2970                             cb->cb_literal) != 0)
2971                                 propstr = "-";
2972                         else
2973                                 propstr = property;
2974                         right_justify = zfs_prop_align_right(pl->pl_prop);
2975                 } else if (zfs_prop_userquota(pl->pl_user_prop)) {
2976                         if (zfs_prop_get_userquota(zhp, pl->pl_user_prop,
2977                             property, sizeof (property), cb->cb_literal) != 0)
2978                                 propstr = "-";
2979                         else
2980                                 propstr = property;
2981                         right_justify = B_TRUE;
2982                 } else if (zfs_prop_written(pl->pl_user_prop)) {
2983                         if (zfs_prop_get_written(zhp, pl->pl_user_prop,
2984                             property, sizeof (property), cb->cb_literal) != 0)
2985                                 propstr = "-";
2986                         else
2987                                 propstr = property;
2988                         right_justify = B_TRUE;
2989                 } else {
2990                         if (nvlist_lookup_nvlist(userprops,
2991                             pl->pl_user_prop, &propval) != 0)
2992                                 propstr = "-";
2993                         else
2994                                 verify(nvlist_lookup_string(propval,
2995                                     ZPROP_VALUE, &propstr) == 0);
2996                         right_justify = B_FALSE;
2997                 }
2998
2999                 /*
3000                  * If this is being called in scripted mode, or if this is the
3001                  * last column and it is left-justified, don't include a width
3002                  * format specifier.
3003                  */
3004                 if (cb->cb_scripted || (pl->pl_next == NULL && !right_justify))
3005                         (void) printf("%s", propstr);
3006                 else if (right_justify)
3007                         (void) printf("%*s", pl->pl_width, propstr);
3008                 else
3009                         (void) printf("%-*s", pl->pl_width, propstr);
3010         }
3011
3012         (void) printf("\n");
3013 }
3014
3015 /*
3016  * Generic callback function to list a dataset or snapshot.
3017  */
3018 static int
3019 list_callback(zfs_handle_t *zhp, void *data)
3020 {
3021         list_cbdata_t *cbp = data;
3022
3023         if (cbp->cb_first) {
3024                 if (!cbp->cb_scripted)
3025                         print_header(cbp);
3026                 cbp->cb_first = B_FALSE;
3027         }
3028
3029         print_dataset(zhp, cbp);
3030
3031         return (0);
3032 }
3033
3034 static int
3035 zfs_do_list(int argc, char **argv)
3036 {
3037         int c;
3038         static char default_fields[] =
3039             "name,used,available,referenced,mountpoint";
3040         int types = ZFS_TYPE_DATASET;
3041         boolean_t types_specified = B_FALSE;
3042         char *fields = NULL;
3043         list_cbdata_t cb = { 0 };
3044         char *value;
3045         int limit = 0;
3046         int ret = 0;
3047         zfs_sort_column_t *sortcol = NULL;
3048         int flags = ZFS_ITER_PROP_LISTSNAPS | ZFS_ITER_ARGS_CAN_BE_PATHS;
3049
3050         /* check options */
3051         while ((c = getopt(argc, argv, "HS:d:o:prs:t:")) != -1) {
3052                 switch (c) {
3053                 case 'o':
3054                         fields = optarg;
3055                         break;
3056                 case 'p':
3057                         cb.cb_literal = B_TRUE;
3058                         flags |= ZFS_ITER_LITERAL_PROPS;
3059                         break;
3060                 case 'd':
3061                         limit = parse_depth(optarg, &flags);
3062                         break;
3063                 case 'r':
3064                         flags |= ZFS_ITER_RECURSE;
3065                         break;
3066                 case 'H':
3067                         cb.cb_scripted = B_TRUE;
3068                         break;
3069                 case 's':
3070                         if (zfs_add_sort_column(&sortcol, optarg,
3071                             B_FALSE) != 0) {
3072                                 (void) fprintf(stderr,
3073                                     gettext("invalid property '%s'\n"), optarg);
3074                                 usage(B_FALSE);
3075                         }
3076                         break;
3077                 case 'S':
3078                         if (zfs_add_sort_column(&sortcol, optarg,
3079                             B_TRUE) != 0) {
3080                                 (void) fprintf(stderr,
3081                                     gettext("invalid property '%s'\n"), optarg);
3082                                 usage(B_FALSE);
3083                         }
3084                         break;
3085                 case 't':
3086                         types = 0;
3087                         types_specified = B_TRUE;
3088                         flags &= ~ZFS_ITER_PROP_LISTSNAPS;
3089                         while (*optarg != '\0') {
3090                                 static char *type_subopts[] = { "filesystem",
3091                                     "volume", "snapshot", "snap", "bookmark",
3092                                     "all", NULL };
3093
3094                                 switch (getsubopt(&optarg, type_subopts,
3095                                     &value)) {
3096                                 case 0:
3097                                         types |= ZFS_TYPE_FILESYSTEM;
3098                                         break;
3099                                 case 1:
3100                                         types |= ZFS_TYPE_VOLUME;
3101                                         break;
3102                                 case 2:
3103                                 case 3:
3104                                         types |= ZFS_TYPE_SNAPSHOT;
3105                                         break;
3106                                 case 4:
3107                                         types |= ZFS_TYPE_BOOKMARK;
3108                                         break;
3109                                 case 5:
3110                                         types = ZFS_TYPE_DATASET |
3111                                             ZFS_TYPE_BOOKMARK;
3112                                         break;
3113                                 default:
3114                                         (void) fprintf(stderr,
3115                                             gettext("invalid type '%s'\n"),
3116                                             value);
3117                                         usage(B_FALSE);
3118                                 }
3119                         }
3120                         break;
3121                 case ':':
3122                         (void) fprintf(stderr, gettext("missing argument for "
3123                             "'%c' option\n"), optopt);
3124                         usage(B_FALSE);
3125                         break;
3126                 case '?':
3127                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3128                             optopt);
3129                         usage(B_FALSE);
3130                 }
3131         }
3132
3133         argc -= optind;
3134         argv += optind;
3135
3136         if (fields == NULL)
3137                 fields = default_fields;
3138
3139         /*
3140          * If we are only going to list snapshot names and sort by name,
3141          * then we can use faster version.
3142          */
3143         if (strcmp(fields, "name") == 0 && zfs_sort_only_by_name(sortcol))
3144                 flags |= ZFS_ITER_SIMPLE;
3145
3146         /*
3147          * If "-o space" and no types were specified, don't display snapshots.
3148          */
3149         if (strcmp(fields, "space") == 0 && types_specified == B_FALSE)
3150                 types &= ~ZFS_TYPE_SNAPSHOT;
3151
3152         /*
3153          * If the user specifies '-o all', the zprop_get_list() doesn't
3154          * normally include the name of the dataset.  For 'zfs list', we always
3155          * want this property to be first.
3156          */
3157         if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
3158             != 0)
3159                 usage(B_FALSE);
3160
3161         cb.cb_first = B_TRUE;
3162
3163         ret = zfs_for_each(argc, argv, flags, types, sortcol, &cb.cb_proplist,
3164             limit, list_callback, &cb);
3165
3166         zprop_free_list(cb.cb_proplist);
3167         zfs_free_sort_columns(sortcol);
3168
3169         if (ret == 0 && cb.cb_first && !cb.cb_scripted)
3170                 (void) printf(gettext("no datasets available\n"));
3171
3172         return (ret);
3173 }
3174
3175 /*
3176  * zfs rename [-f] <fs | snap | vol> <fs | snap | vol>
3177  * zfs rename [-f] -p <fs | vol> <fs | vol>
3178  * zfs rename -r <snap> <snap>
3179  * zfs rename -u [-p] <fs> <fs>
3180  *
3181  * Renames the given dataset to another of the same type.
3182  *
3183  * The '-p' flag creates all the non-existing ancestors of the target first.
3184  */
3185 /* ARGSUSED */
3186 static int
3187 zfs_do_rename(int argc, char **argv)
3188 {
3189         zfs_handle_t *zhp;
3190         renameflags_t flags = { 0 };
3191         int c;
3192         int ret = 0;
3193         int types;
3194         boolean_t parents = B_FALSE;
3195         char *snapshot = NULL;
3196
3197         /* check options */
3198         while ((c = getopt(argc, argv, "fpru")) != -1) {
3199                 switch (c) {
3200                 case 'p':
3201                         parents = B_TRUE;
3202                         break;
3203                 case 'r':
3204                         flags.recurse = B_TRUE;
3205                         break;
3206                 case 'u':
3207                         flags.nounmount = B_TRUE;
3208                         break;
3209                 case 'f':
3210                         flags.forceunmount = B_TRUE;
3211                         break;
3212                 case '?':
3213                 default:
3214                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3215                             optopt);
3216                         usage(B_FALSE);
3217                 }
3218         }
3219
3220         argc -= optind;
3221         argv += optind;
3222
3223         /* check number of arguments */
3224         if (argc < 1) {
3225                 (void) fprintf(stderr, gettext("missing source dataset "
3226                     "argument\n"));
3227                 usage(B_FALSE);
3228         }
3229         if (argc < 2) {
3230                 (void) fprintf(stderr, gettext("missing target dataset "
3231                     "argument\n"));
3232                 usage(B_FALSE);
3233         }
3234         if (argc > 2) {
3235                 (void) fprintf(stderr, gettext("too many arguments\n"));
3236                 usage(B_FALSE);
3237         }
3238
3239         if (flags.recurse && parents) {
3240                 (void) fprintf(stderr, gettext("-p and -r options are mutually "
3241                     "exclusive\n"));
3242                 usage(B_FALSE);
3243         }
3244
3245         if (flags.recurse && strchr(argv[0], '@') == 0) {
3246                 (void) fprintf(stderr, gettext("source dataset for recursive "
3247                     "rename must be a snapshot\n"));
3248                 usage(B_FALSE);
3249         }
3250
3251         if (flags.nounmount && parents) {
3252                 (void) fprintf(stderr, gettext("-u and -p options are mutually "
3253                     "exclusive\n"));
3254                 usage(B_FALSE);
3255         }
3256
3257         if (flags.nounmount)
3258                 types = ZFS_TYPE_FILESYSTEM;
3259         else if (parents)
3260                 types = ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME;
3261         else
3262                 types = ZFS_TYPE_DATASET;
3263
3264         if (flags.recurse) {
3265                 /*
3266                  * When we do recursive rename we are fine when the given
3267                  * snapshot for the given dataset doesn't exist - it can
3268                  * still exists below.
3269                  */
3270
3271                 snapshot = strchr(argv[0], '@');
3272                 assert(snapshot != NULL);
3273                 *snapshot = '\0';
3274                 snapshot++;
3275         }
3276
3277         if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL)
3278                 return (1);
3279
3280         /* If we were asked and the name looks good, try to create ancestors. */
3281         if (parents && zfs_name_valid(argv[1], zfs_get_type(zhp)) &&
3282             zfs_create_ancestors(g_zfs, argv[1]) != 0) {
3283                 zfs_close(zhp);
3284                 return (1);
3285         }
3286
3287         ret = (zfs_rename(zhp, snapshot, argv[1], flags) != 0);
3288
3289         zfs_close(zhp);
3290         return (ret);
3291 }
3292
3293 /*
3294  * zfs promote <fs>
3295  *
3296  * Promotes the given clone fs to be the parent
3297  */
3298 /* ARGSUSED */
3299 static int
3300 zfs_do_promote(int argc, char **argv)
3301 {
3302         zfs_handle_t *zhp;
3303         int ret = 0;
3304
3305         /* check options */
3306         if (argc > 1 && argv[1][0] == '-') {
3307                 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3308                     argv[1][1]);
3309                 usage(B_FALSE);
3310         }
3311
3312         /* check number of arguments */
3313         if (argc < 2) {
3314                 (void) fprintf(stderr, gettext("missing clone filesystem"
3315                     " argument\n"));
3316                 usage(B_FALSE);
3317         }
3318         if (argc > 2) {
3319                 (void) fprintf(stderr, gettext("too many arguments\n"));
3320                 usage(B_FALSE);
3321         }
3322
3323         zhp = zfs_open(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3324         if (zhp == NULL)
3325                 return (1);
3326
3327         ret = (zfs_promote(zhp) != 0);
3328
3329
3330         zfs_close(zhp);
3331         return (ret);
3332 }
3333
3334 /*
3335  * zfs rollback [-rRf] <snapshot>
3336  *
3337  *      -r      Delete any intervening snapshots before doing rollback
3338  *      -R      Delete any snapshots and their clones
3339  *      -f      ignored for backwards compatability
3340  *
3341  * Given a filesystem, rollback to a specific snapshot, discarding any changes
3342  * since then and making it the active dataset.  If more recent snapshots exist,
3343  * the command will complain unless the '-r' flag is given.
3344  */
3345 typedef struct rollback_cbdata {
3346         uint64_t        cb_create;
3347         boolean_t       cb_first;
3348         int             cb_doclones;
3349         char            *cb_target;
3350         int             cb_error;
3351         boolean_t       cb_recurse;
3352 } rollback_cbdata_t;
3353
3354 static int
3355 rollback_check_dependent(zfs_handle_t *zhp, void *data)
3356 {
3357         rollback_cbdata_t *cbp = data;
3358
3359         if (cbp->cb_first && cbp->cb_recurse) {
3360                 (void) fprintf(stderr, gettext("cannot rollback to "
3361                     "'%s': clones of previous snapshots exist\n"),
3362                     cbp->cb_target);
3363                 (void) fprintf(stderr, gettext("use '-R' to "
3364                     "force deletion of the following clones and "
3365                     "dependents:\n"));
3366                 cbp->cb_first = 0;
3367                 cbp->cb_error = 1;
3368         }
3369
3370         (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
3371
3372         zfs_close(zhp);
3373         return (0);
3374 }
3375
3376 /*
3377  * Report any snapshots more recent than the one specified.  Used when '-r' is
3378  * not specified.  We reuse this same callback for the snapshot dependents - if
3379  * 'cb_dependent' is set, then this is a dependent and we should report it
3380  * without checking the transaction group.
3381  */
3382 static int
3383 rollback_check(zfs_handle_t *zhp, void *data)
3384 {
3385         rollback_cbdata_t *cbp = data;
3386
3387         if (cbp->cb_doclones) {
3388                 zfs_close(zhp);
3389                 return (0);
3390         }
3391
3392         if (zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > cbp->cb_create) {
3393                 if (cbp->cb_first && !cbp->cb_recurse) {
3394                         (void) fprintf(stderr, gettext("cannot "
3395                             "rollback to '%s': more recent snapshots "
3396                             "or bookmarks exist\n"),
3397                             cbp->cb_target);
3398                         (void) fprintf(stderr, gettext("use '-r' to "
3399                             "force deletion of the following "
3400                             "snapshots and bookmarks:\n"));
3401                         cbp->cb_first = 0;
3402                         cbp->cb_error = 1;
3403                 }
3404
3405                 if (cbp->cb_recurse) {
3406                         if (zfs_iter_dependents(zhp, B_TRUE,
3407                             rollback_check_dependent, cbp) != 0) {
3408                                 zfs_close(zhp);
3409                                 return (-1);
3410                         }
3411                 } else {
3412                         (void) fprintf(stderr, "%s\n",
3413                             zfs_get_name(zhp));
3414                 }
3415         }
3416         zfs_close(zhp);
3417         return (0);
3418 }
3419
3420 static int
3421 zfs_do_rollback(int argc, char **argv)
3422 {
3423         int ret = 0;
3424         int c;
3425         boolean_t force = B_FALSE;
3426         rollback_cbdata_t cb = { 0 };
3427         zfs_handle_t *zhp, *snap;
3428         char parentname[ZFS_MAXNAMELEN];
3429         char *delim;
3430
3431         /* check options */
3432         while ((c = getopt(argc, argv, "rRf")) != -1) {
3433                 switch (c) {
3434                 case 'r':
3435                         cb.cb_recurse = 1;
3436                         break;
3437                 case 'R':
3438                         cb.cb_recurse = 1;
3439                         cb.cb_doclones = 1;
3440                         break;
3441                 case 'f':
3442                         force = B_TRUE;
3443                         break;
3444                 case '?':
3445                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3446                             optopt);
3447                         usage(B_FALSE);
3448                 }
3449         }
3450
3451         argc -= optind;
3452         argv += optind;
3453
3454         /* check number of arguments */
3455         if (argc < 1) {
3456                 (void) fprintf(stderr, gettext("missing dataset argument\n"));
3457                 usage(B_FALSE);
3458         }
3459         if (argc > 1) {
3460                 (void) fprintf(stderr, gettext("too many arguments\n"));
3461                 usage(B_FALSE);
3462         }
3463
3464         /* open the snapshot */
3465         if ((snap = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
3466                 return (1);
3467
3468         /* open the parent dataset */
3469         (void) strlcpy(parentname, argv[0], sizeof (parentname));
3470         verify((delim = strrchr(parentname, '@')) != NULL);
3471         *delim = '\0';
3472         if ((zhp = zfs_open(g_zfs, parentname, ZFS_TYPE_DATASET)) == NULL) {
3473                 zfs_close(snap);
3474                 return (1);
3475         }
3476
3477         /*
3478          * Check for more recent snapshots and/or clones based on the presence
3479          * of '-r' and '-R'.
3480          */
3481         cb.cb_target = argv[0];
3482         cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG);
3483         cb.cb_first = B_TRUE;
3484         cb.cb_error = 0;
3485         if ((ret = zfs_iter_snapshots(zhp, B_FALSE, rollback_check, &cb)) != 0)
3486                 goto out;
3487         if ((ret = zfs_iter_bookmarks(zhp, rollback_check, &cb)) != 0)
3488                 goto out;
3489
3490         if ((ret = cb.cb_error) != 0)
3491                 goto out;
3492
3493         /*
3494          * Rollback parent to the given snapshot.
3495          */
3496         ret = zfs_rollback(zhp, snap, force);
3497
3498 out:
3499         zfs_close(snap);
3500         zfs_close(zhp);
3501
3502         if (ret == 0)
3503                 return (0);
3504         else
3505                 return (1);
3506 }
3507
3508 /*
3509  * zfs set property=value { fs | snap | vol } ...
3510  *
3511  * Sets the given property for all datasets specified on the command line.
3512  */
3513 typedef struct set_cbdata {
3514         char            *cb_propname;
3515         char            *cb_value;
3516 } set_cbdata_t;
3517
3518 static int
3519 set_callback(zfs_handle_t *zhp, void *data)
3520 {
3521         set_cbdata_t *cbp = data;
3522
3523         if (zfs_prop_set(zhp, cbp->cb_propname, cbp->cb_value) != 0) {
3524                 switch (libzfs_errno(g_zfs)) {
3525                 case EZFS_MOUNTFAILED:
3526                         (void) fprintf(stderr, gettext("property may be set "
3527                             "but unable to remount filesystem\n"));
3528                         break;
3529                 case EZFS_SHARENFSFAILED:
3530                         (void) fprintf(stderr, gettext("property may be set "
3531                             "but unable to reshare filesystem\n"));
3532                         break;
3533                 }
3534                 return (1);
3535         }
3536         return (0);
3537 }
3538
3539 static int
3540 zfs_do_set(int argc, char **argv)
3541 {
3542         set_cbdata_t cb;
3543         int ret = 0;
3544
3545         /* check for options */
3546         if (argc > 1 && argv[1][0] == '-') {
3547                 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3548                     argv[1][1]);
3549                 usage(B_FALSE);
3550         }
3551
3552         /* check number of arguments */
3553         if (argc < 2) {
3554                 (void) fprintf(stderr, gettext("missing property=value "
3555                     "argument\n"));
3556                 usage(B_FALSE);
3557         }
3558         if (argc < 3) {
3559                 (void) fprintf(stderr, gettext("missing dataset name\n"));
3560                 usage(B_FALSE);
3561         }
3562
3563         /* validate property=value argument */
3564         cb.cb_propname = argv[1];
3565         if (((cb.cb_value = strchr(cb.cb_propname, '=')) == NULL) ||
3566             (cb.cb_value[1] == '\0')) {
3567                 (void) fprintf(stderr, gettext("missing value in "
3568                     "property=value argument\n"));
3569                 usage(B_FALSE);
3570         }
3571
3572         *cb.cb_value = '\0';
3573         cb.cb_value++;
3574
3575         if (*cb.cb_propname == '\0') {
3576                 (void) fprintf(stderr,
3577                     gettext("missing property in property=value argument\n"));
3578                 usage(B_FALSE);
3579         }
3580
3581         ret = zfs_for_each(argc - 2, argv + 2, 0,
3582             ZFS_TYPE_DATASET, NULL, NULL, 0, set_callback, &cb);
3583
3584         return (ret);
3585 }
3586
3587 typedef struct snap_cbdata {
3588         nvlist_t *sd_nvl;
3589         boolean_t sd_recursive;
3590         const char *sd_snapname;
3591 } snap_cbdata_t;
3592
3593 static int
3594 zfs_snapshot_cb(zfs_handle_t *zhp, void *arg)
3595 {
3596         snap_cbdata_t *sd = arg;
3597         char *name;
3598         int rv = 0;
3599         int error;
3600
3601         if (sd->sd_recursive &&
3602             zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) != 0) {
3603                 zfs_close(zhp);
3604                 return (0);
3605         }
3606
3607         error = asprintf(&name, "%s@%s", zfs_get_name(zhp), sd->sd_snapname);
3608         if (error == -1)
3609                 nomem();
3610         fnvlist_add_boolean(sd->sd_nvl, name);
3611         free(name);
3612
3613         if (sd->sd_recursive)
3614                 rv = zfs_iter_filesystems(zhp, zfs_snapshot_cb, sd);
3615         zfs_close(zhp);
3616         return (rv);
3617 }
3618
3619 /*
3620  * zfs snapshot [-r] [-o prop=value] ... <fs@snap>
3621  *
3622  * Creates a snapshot with the given name.  While functionally equivalent to
3623  * 'zfs create', it is a separate command to differentiate intent.
3624  */
3625 static int
3626 zfs_do_snapshot(int argc, char **argv)
3627 {
3628         int ret = 0;
3629         int c;
3630         nvlist_t *props;
3631         snap_cbdata_t sd = { 0 };
3632         boolean_t multiple_snaps = B_FALSE;
3633
3634         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
3635                 nomem();
3636         if (nvlist_alloc(&sd.sd_nvl, NV_UNIQUE_NAME, 0) != 0)
3637                 nomem();
3638
3639         /* check options */
3640         while ((c = getopt(argc, argv, "ro:")) != -1) {
3641                 switch (c) {
3642                 case 'o':
3643                         if (parseprop(props, optarg))
3644                                 return (1);
3645                         break;
3646                 case 'r':
3647                         sd.sd_recursive = B_TRUE;
3648                         multiple_snaps = B_TRUE;
3649                         break;
3650                 case '?':
3651                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3652                             optopt);
3653                         goto usage;
3654                 }
3655         }
3656
3657         argc -= optind;
3658         argv += optind;
3659
3660         /* check number of arguments */
3661         if (argc < 1) {
3662                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
3663                 goto usage;
3664         }
3665
3666         if (argc > 1)
3667                 multiple_snaps = B_TRUE;
3668         for (; argc > 0; argc--, argv++) {
3669                 char *atp;
3670                 zfs_handle_t *zhp;
3671
3672                 atp = strchr(argv[0], '@');
3673                 if (atp == NULL)
3674                         goto usage;
3675                 *atp = '\0';
3676                 sd.sd_snapname = atp + 1;
3677                 zhp = zfs_open(g_zfs, argv[0],
3678                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3679                 if (zhp == NULL)
3680                         goto usage;
3681                 if (zfs_snapshot_cb(zhp, &sd) != 0)
3682                         goto usage;
3683         }
3684
3685         ret = zfs_snapshot_nvl(g_zfs, sd.sd_nvl, props);
3686         nvlist_free(sd.sd_nvl);
3687         nvlist_free(props);
3688         if (ret != 0 && multiple_snaps)
3689                 (void) fprintf(stderr, gettext("no snapshots were created\n"));
3690         return (ret != 0);
3691
3692 usage:
3693         nvlist_free(sd.sd_nvl);
3694         nvlist_free(props);
3695         usage(B_FALSE);
3696         return (-1);
3697 }
3698
3699 /*
3700  * Send a backup stream to stdout.
3701  */
3702 static int
3703 zfs_do_send(int argc, char **argv)
3704 {
3705         char *fromname = NULL;
3706         char *toname = NULL;
3707         char *cp;
3708         zfs_handle_t *zhp;
3709         sendflags_t flags = { 0 };
3710         int c, err;
3711         nvlist_t *dbgnv = NULL;
3712         boolean_t extraverbose = B_FALSE;
3713
3714         /* check options */
3715         while ((c = getopt(argc, argv, ":i:I:RDpvnPLe")) != -1) {
3716                 switch (c) {
3717                 case 'i':
3718                         if (fromname)
3719                                 usage(B_FALSE);
3720                         fromname = optarg;
3721                         break;
3722                 case 'I':
3723                         if (fromname)
3724                                 usage(B_FALSE);
3725                         fromname = optarg;
3726                         flags.doall = B_TRUE;
3727                         break;
3728                 case 'R':
3729                         flags.replicate = B_TRUE;
3730                         break;
3731                 case 'p':
3732                         flags.props = B_TRUE;
3733                         break;
3734                 case 'P':
3735                         flags.parsable = B_TRUE;
3736                         flags.verbose = B_TRUE;
3737                         break;
3738                 case 'v':
3739                         if (flags.verbose)
3740                                 extraverbose = B_TRUE;
3741                         flags.verbose = B_TRUE;
3742                         flags.progress = B_TRUE;
3743                         break;
3744                 case 'D':
3745                         flags.dedup = B_TRUE;
3746                         break;
3747                 case 'n':
3748                         flags.dryrun = B_TRUE;
3749                         break;
3750                 case 'L':
3751                         flags.largeblock = B_TRUE;
3752                         break;
3753                 case 'e':
3754                         flags.embed_data = B_TRUE;
3755                         break;
3756                 case ':':
3757                         (void) fprintf(stderr, gettext("missing argument for "
3758                             "'%c' option\n"), optopt);
3759                         usage(B_FALSE);
3760                         break;
3761                 case '?':
3762                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3763                             optopt);
3764                         usage(B_FALSE);
3765                 }
3766         }
3767
3768         argc -= optind;
3769         argv += optind;
3770
3771         /* check number of arguments */
3772         if (argc < 1) {
3773                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
3774                 usage(B_FALSE);
3775         }
3776         if (argc > 1) {
3777                 (void) fprintf(stderr, gettext("too many arguments\n"));
3778                 usage(B_FALSE);
3779         }
3780
3781         if (!flags.dryrun && isatty(STDOUT_FILENO)) {
3782                 (void) fprintf(stderr,
3783                     gettext("Error: Stream can not be written to a terminal.\n"
3784                     "You must redirect standard output.\n"));
3785                 return (1);
3786         }
3787
3788         /*
3789          * Special case sending a filesystem, or from a bookmark.
3790          */
3791         if (strchr(argv[0], '@') == NULL ||
3792             (fromname && strchr(fromname, '#') != NULL)) {
3793                 char frombuf[ZFS_MAXNAMELEN];
3794                 enum lzc_send_flags lzc_flags = 0;
3795
3796                 if (flags.replicate || flags.doall || flags.props ||
3797                     flags.dedup || flags.dryrun || flags.verbose ||
3798                     flags.progress) {
3799                         (void) fprintf(stderr,
3800                             gettext("Error: "
3801                             "Unsupported flag with filesystem or bookmark.\n"));
3802                         return (1);
3803                 }
3804
3805                 zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET);
3806                 if (zhp == NULL)
3807                         return (1);
3808
3809                 if (flags.largeblock)
3810                         lzc_flags |= LZC_SEND_FLAG_LARGE_BLOCK;
3811                 if (flags.embed_data)
3812                         lzc_flags |= LZC_SEND_FLAG_EMBED_DATA;
3813
3814                 if (fromname != NULL &&
3815                     (fromname[0] == '#' || fromname[0] == '@')) {
3816                         /*
3817                          * Incremental source name begins with # or @.
3818                          * Default to same fs as target.
3819                          */
3820                         (void) strncpy(frombuf, argv[0], sizeof (frombuf));
3821                         cp = strchr(frombuf, '@');
3822                         if (cp != NULL)
3823                                 *cp = '\0';
3824                         (void) strlcat(frombuf, fromname, sizeof (frombuf));
3825                         fromname = frombuf;
3826                 }
3827                 err = zfs_send_one(zhp, fromname, STDOUT_FILENO, lzc_flags);
3828                 zfs_close(zhp);
3829                 return (err != 0);
3830         }
3831
3832         cp = strchr(argv[0], '@');
3833         *cp = '\0';
3834         toname = cp + 1;
3835         zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3836         if (zhp == NULL)
3837                 return (1);
3838
3839         /*
3840          * If they specified the full path to the snapshot, chop off
3841          * everything except the short name of the snapshot, but special
3842          * case if they specify the origin.
3843          */
3844         if (fromname && (cp = strchr(fromname, '@')) != NULL) {
3845                 char origin[ZFS_MAXNAMELEN];
3846                 zprop_source_t src;
3847
3848                 (void) zfs_prop_get(zhp, ZFS_PROP_ORIGIN,
3849                     origin, sizeof (origin), &src, NULL, 0, B_FALSE);
3850
3851                 if (strcmp(origin, fromname) == 0) {
3852                         fromname = NULL;
3853                         flags.fromorigin = B_TRUE;
3854                 } else {
3855                         *cp = '\0';
3856                         if (cp != fromname && strcmp(argv[0], fromname)) {
3857                                 (void) fprintf(stderr,
3858                                     gettext("incremental source must be "
3859                                     "in same filesystem\n"));
3860                                 usage(B_FALSE);
3861                         }
3862                         fromname = cp + 1;
3863                         if (strchr(fromname, '@') || strchr(fromname, '/')) {
3864                                 (void) fprintf(stderr,
3865                                     gettext("invalid incremental source\n"));
3866                                 usage(B_FALSE);
3867                         }
3868                 }
3869         }
3870
3871         if (flags.replicate && fromname == NULL)
3872                 flags.doall = B_TRUE;
3873
3874         err = zfs_send(zhp, fromname, toname, &flags, STDOUT_FILENO, NULL, 0,
3875             extraverbose ? &dbgnv : NULL);
3876
3877         if (extraverbose && dbgnv != NULL) {
3878                 /*
3879                  * dump_nvlist prints to stdout, but that's been
3880                  * redirected to a file.  Make it print to stderr
3881                  * instead.
3882                  */
3883                 (void) dup2(STDERR_FILENO, STDOUT_FILENO);
3884                 dump_nvlist(dbgnv, 0);
3885                 nvlist_free(dbgnv);
3886         }
3887         zfs_close(zhp);
3888
3889         return (err != 0);
3890 }
3891
3892 /*
3893  * zfs receive [-vnFu] [-d | -e] <fs@snap>
3894  *
3895  * Restore a backup stream from stdin.
3896  */
3897 static int
3898 zfs_do_receive(int argc, char **argv)
3899 {
3900         int c, err;
3901         recvflags_t flags = { 0 };
3902
3903         /* check options */
3904         while ((c = getopt(argc, argv, ":denuvF")) != -1) {
3905                 switch (c) {
3906                 case 'd':
3907                         flags.isprefix = B_TRUE;
3908                         break;
3909                 case 'e':
3910                         flags.isprefix = B_TRUE;
3911                         flags.istail = B_TRUE;
3912                         break;
3913                 case 'n':
3914                         flags.dryrun = B_TRUE;
3915                         break;
3916                 case 'u':
3917                         flags.nomount = B_TRUE;
3918                         break;
3919                 case 'v':
3920                         flags.verbose = B_TRUE;
3921                         break;
3922                 case 'F':
3923                         flags.force = B_TRUE;
3924                         break;
3925                 case ':':
3926                         (void) fprintf(stderr, gettext("missing argument for "
3927                             "'%c' option\n"), optopt);
3928                         usage(B_FALSE);
3929                         break;
3930                 case '?':
3931                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3932                             optopt);
3933                         usage(B_FALSE);
3934                 }
3935         }
3936
3937         argc -= optind;
3938         argv += optind;
3939
3940         /* check number of arguments */
3941         if (argc < 1) {
3942                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
3943                 usage(B_FALSE);
3944         }
3945         if (argc > 1) {
3946                 (void) fprintf(stderr, gettext("too many arguments\n"));
3947                 usage(B_FALSE);
3948         }
3949
3950         if (isatty(STDIN_FILENO)) {
3951                 (void) fprintf(stderr,
3952                     gettext("Error: Backup stream can not be read "
3953                     "from a terminal.\n"
3954                     "You must redirect standard input.\n"));
3955                 return (1);
3956         }
3957
3958         err = zfs_receive(g_zfs, argv[0], &flags, STDIN_FILENO, NULL);
3959
3960         return (err != 0);
3961 }
3962
3963 /*
3964  * allow/unallow stuff
3965  */
3966 /* copied from zfs/sys/dsl_deleg.h */
3967 #define ZFS_DELEG_PERM_CREATE           "create"
3968 #define ZFS_DELEG_PERM_DESTROY          "destroy"
3969 #define ZFS_DELEG_PERM_SNAPSHOT         "snapshot"
3970 #define ZFS_DELEG_PERM_ROLLBACK         "rollback"
3971 #define ZFS_DELEG_PERM_CLONE            "clone"
3972 #define ZFS_DELEG_PERM_PROMOTE          "promote"
3973 #define ZFS_DELEG_PERM_RENAME           "rename"
3974 #define ZFS_DELEG_PERM_MOUNT            "mount"
3975 #define ZFS_DELEG_PERM_SHARE            "share"
3976 #define ZFS_DELEG_PERM_SEND             "send"
3977 #define ZFS_DELEG_PERM_RECEIVE          "receive"
3978 #define ZFS_DELEG_PERM_ALLOW            "allow"
3979 #define ZFS_DELEG_PERM_USERPROP         "userprop"
3980 #define ZFS_DELEG_PERM_VSCAN            "vscan" /* ??? */
3981 #define ZFS_DELEG_PERM_USERQUOTA        "userquota"
3982 #define ZFS_DELEG_PERM_GROUPQUOTA       "groupquota"
3983 #define ZFS_DELEG_PERM_USERUSED         "userused"
3984 #define ZFS_DELEG_PERM_GROUPUSED        "groupused"
3985 #define ZFS_DELEG_PERM_HOLD             "hold"
3986 #define ZFS_DELEG_PERM_RELEASE          "release"
3987 #define ZFS_DELEG_PERM_DIFF             "diff"
3988 #define ZFS_DELEG_PERM_BOOKMARK         "bookmark"
3989
3990 #define ZFS_NUM_DELEG_NOTES ZFS_DELEG_NOTE_NONE
3991
3992 static zfs_deleg_perm_tab_t zfs_deleg_perm_tbl[] = {
3993         { ZFS_DELEG_PERM_ALLOW, ZFS_DELEG_NOTE_ALLOW },
3994         { ZFS_DELEG_PERM_CLONE, ZFS_DELEG_NOTE_CLONE },
3995         { ZFS_DELEG_PERM_CREATE, ZFS_DELEG_NOTE_CREATE },
3996         { ZFS_DELEG_PERM_DESTROY, ZFS_DELEG_NOTE_DESTROY },
3997         { ZFS_DELEG_PERM_DIFF, ZFS_DELEG_NOTE_DIFF},
3998         { ZFS_DELEG_PERM_HOLD, ZFS_DELEG_NOTE_HOLD },
3999         { ZFS_DELEG_PERM_MOUNT, ZFS_DELEG_NOTE_MOUNT },
4000         { ZFS_DELEG_PERM_PROMOTE, ZFS_DELEG_NOTE_PROMOTE },
4001         { ZFS_DELEG_PERM_RECEIVE, ZFS_DELEG_NOTE_RECEIVE },
4002         { ZFS_DELEG_PERM_RELEASE, ZFS_DELEG_NOTE_RELEASE },
4003         { ZFS_DELEG_PERM_RENAME, ZFS_DELEG_NOTE_RENAME },
4004         { ZFS_DELEG_PERM_ROLLBACK, ZFS_DELEG_NOTE_ROLLBACK },
4005         { ZFS_DELEG_PERM_SEND, ZFS_DELEG_NOTE_SEND },
4006         { ZFS_DELEG_PERM_SHARE, ZFS_DELEG_NOTE_SHARE },
4007         { ZFS_DELEG_PERM_SNAPSHOT, ZFS_DELEG_NOTE_SNAPSHOT },
4008         { ZFS_DELEG_PERM_BOOKMARK, ZFS_DELEG_NOTE_BOOKMARK },
4009
4010         { ZFS_DELEG_PERM_GROUPQUOTA, ZFS_DELEG_NOTE_GROUPQUOTA },
4011         { ZFS_DELEG_PERM_GROUPUSED, ZFS_DELEG_NOTE_GROUPUSED },
4012         { ZFS_DELEG_PERM_USERPROP, ZFS_DELEG_NOTE_USERPROP },
4013         { ZFS_DELEG_PERM_USERQUOTA, ZFS_DELEG_NOTE_USERQUOTA },
4014         { ZFS_DELEG_PERM_USERUSED, ZFS_DELEG_NOTE_USERUSED },
4015         { NULL, ZFS_DELEG_NOTE_NONE }
4016 };
4017
4018 /* permission structure */
4019 typedef struct deleg_perm {
4020         zfs_deleg_who_type_t    dp_who_type;
4021         const char              *dp_name;
4022         boolean_t               dp_local;
4023         boolean_t               dp_descend;
4024 } deleg_perm_t;
4025
4026 /* */
4027 typedef struct deleg_perm_node {
4028         deleg_perm_t            dpn_perm;
4029
4030         uu_avl_node_t           dpn_avl_node;
4031 } deleg_perm_node_t;
4032
4033 typedef struct fs_perm fs_perm_t;
4034
4035 /* permissions set */
4036 typedef struct who_perm {
4037         zfs_deleg_who_type_t    who_type;
4038         const char              *who_name;              /* id */
4039         char                    who_ug_name[256];       /* user/group name */
4040         fs_perm_t               *who_fsperm;            /* uplink */
4041
4042         uu_avl_t                *who_deleg_perm_avl;    /* permissions */
4043 } who_perm_t;
4044
4045 /* */
4046 typedef struct who_perm_node {
4047         who_perm_t      who_perm;
4048         uu_avl_node_t   who_avl_node;
4049 } who_perm_node_t;
4050
4051 typedef struct fs_perm_set fs_perm_set_t;
4052 /* fs permissions */
4053 struct fs_perm {
4054         const char              *fsp_name;
4055
4056         uu_avl_t                *fsp_sc_avl;    /* sets,create */
4057         uu_avl_t                *fsp_uge_avl;   /* user,group,everyone */
4058
4059         fs_perm_set_t           *fsp_set;       /* uplink */
4060 };
4061
4062 /* */
4063 typedef struct fs_perm_node {
4064         fs_perm_t       fspn_fsperm;
4065         uu_avl_t        *fspn_avl;
4066
4067         uu_list_node_t  fspn_list_node;
4068 } fs_perm_node_t;
4069
4070 /* top level structure */
4071 struct fs_perm_set {
4072         uu_list_pool_t  *fsps_list_pool;
4073         uu_list_t       *fsps_list; /* list of fs_perms */
4074
4075         uu_avl_pool_t   *fsps_named_set_avl_pool;
4076         uu_avl_pool_t   *fsps_who_perm_avl_pool;
4077         uu_avl_pool_t   *fsps_deleg_perm_avl_pool;
4078 };
4079
4080 static inline const char *
4081 deleg_perm_type(zfs_deleg_note_t note)
4082 {
4083         /* subcommands */
4084         switch (note) {
4085                 /* SUBCOMMANDS */
4086                 /* OTHER */
4087         case ZFS_DELEG_NOTE_GROUPQUOTA:
4088         case ZFS_DELEG_NOTE_GROUPUSED:
4089         case ZFS_DELEG_NOTE_USERPROP:
4090         case ZFS_DELEG_NOTE_USERQUOTA:
4091         case ZFS_DELEG_NOTE_USERUSED:
4092                 /* other */
4093                 return (gettext("other"));
4094         default:
4095                 return (gettext("subcommand"));
4096         }
4097 }
4098
4099 static int inline
4100 who_type2weight(zfs_deleg_who_type_t who_type)
4101 {
4102         int res;
4103         switch (who_type) {
4104                 case ZFS_DELEG_NAMED_SET_SETS:
4105                 case ZFS_DELEG_NAMED_SET:
4106                         res = 0;
4107                         break;
4108                 case ZFS_DELEG_CREATE_SETS:
4109                 case ZFS_DELEG_CREATE:
4110                         res = 1;
4111                         break;
4112                 case ZFS_DELEG_USER_SETS:
4113                 case ZFS_DELEG_USER:
4114                         res = 2;
4115                         break;
4116                 case ZFS_DELEG_GROUP_SETS:
4117                 case ZFS_DELEG_GROUP:
4118                         res = 3;
4119                         break;
4120                 case ZFS_DELEG_EVERYONE_SETS:
4121                 case ZFS_DELEG_EVERYONE:
4122                         res = 4;
4123                         break;
4124                 default:
4125                         res = -1;
4126         }
4127
4128         return (res);
4129 }
4130
4131 /* ARGSUSED */
4132 static int
4133 who_perm_compare(const void *larg, const void *rarg, void *unused)
4134 {
4135         const who_perm_node_t *l = larg;
4136         const who_perm_node_t *r = rarg;
4137         zfs_deleg_who_type_t ltype = l->who_perm.who_type;
4138         zfs_deleg_who_type_t rtype = r->who_perm.who_type;
4139         int lweight = who_type2weight(ltype);
4140         int rweight = who_type2weight(rtype);
4141         int res = lweight - rweight;
4142         if (res == 0)
4143                 res = strncmp(l->who_perm.who_name, r->who_perm.who_name,
4144                     ZFS_MAX_DELEG_NAME-1);
4145
4146         if (res == 0)
4147                 return (0);
4148         if (res > 0)
4149                 return (1);
4150         else
4151                 return (-1);
4152 }
4153
4154 /* ARGSUSED */
4155 static int
4156 deleg_perm_compare(const void *larg, const void *rarg, void *unused)
4157 {
4158         const deleg_perm_node_t *l = larg;
4159         const deleg_perm_node_t *r = rarg;
4160         int res =  strncmp(l->dpn_perm.dp_name, r->dpn_perm.dp_name,
4161             ZFS_MAX_DELEG_NAME-1);
4162
4163         if (res == 0)
4164                 return (0);
4165
4166         if (res > 0)
4167                 return (1);
4168         else
4169                 return (-1);
4170 }
4171
4172 static inline void
4173 fs_perm_set_init(fs_perm_set_t *fspset)
4174 {
4175         bzero(fspset, sizeof (fs_perm_set_t));
4176
4177         if ((fspset->fsps_list_pool = uu_list_pool_create("fsps_list_pool",
4178             sizeof (fs_perm_node_t), offsetof(fs_perm_node_t, fspn_list_node),
4179             NULL, UU_DEFAULT)) == NULL)
4180                 nomem();
4181         if ((fspset->fsps_list = uu_list_create(fspset->fsps_list_pool, NULL,
4182             UU_DEFAULT)) == NULL)
4183                 nomem();
4184
4185         if ((fspset->fsps_named_set_avl_pool = uu_avl_pool_create(
4186             "named_set_avl_pool", sizeof (who_perm_node_t), offsetof(
4187             who_perm_node_t, who_avl_node), who_perm_compare,
4188             UU_DEFAULT)) == NULL)
4189                 nomem();
4190
4191         if ((fspset->fsps_who_perm_avl_pool = uu_avl_pool_create(
4192             "who_perm_avl_pool", sizeof (who_perm_node_t), offsetof(
4193             who_perm_node_t, who_avl_node), who_perm_compare,
4194             UU_DEFAULT)) == NULL)
4195                 nomem();
4196
4197         if ((fspset->fsps_deleg_perm_avl_pool = uu_avl_pool_create(
4198             "deleg_perm_avl_pool", sizeof (deleg_perm_node_t), offsetof(
4199             deleg_perm_node_t, dpn_avl_node), deleg_perm_compare, UU_DEFAULT))
4200             == NULL)
4201                 nomem();
4202 }
4203
4204 static inline void fs_perm_fini(fs_perm_t *);
4205 static inline void who_perm_fini(who_perm_t *);
4206
4207 static inline void
4208 fs_perm_set_fini(fs_perm_set_t *fspset)
4209 {
4210         fs_perm_node_t *node = uu_list_first(fspset->fsps_list);
4211
4212         while (node != NULL) {
4213                 fs_perm_node_t *next_node =
4214                     uu_list_next(fspset->fsps_list, node);
4215                 fs_perm_t *fsperm = &node->fspn_fsperm;
4216                 fs_perm_fini(fsperm);
4217                 uu_list_remove(fspset->fsps_list, node);
4218                 free(node);
4219                 node = next_node;
4220         }
4221
4222         uu_avl_pool_destroy(fspset->fsps_named_set_avl_pool);
4223         uu_avl_pool_destroy(fspset->fsps_who_perm_avl_pool);
4224         uu_avl_pool_destroy(fspset->fsps_deleg_perm_avl_pool);
4225 }
4226
4227 static inline void
4228 deleg_perm_init(deleg_perm_t *deleg_perm, zfs_deleg_who_type_t type,
4229     const char *name)
4230 {
4231         deleg_perm->dp_who_type = type;
4232         deleg_perm->dp_name = name;
4233 }
4234
4235 static inline void
4236 who_perm_init(who_perm_t *who_perm, fs_perm_t *fsperm,
4237     zfs_deleg_who_type_t type, const char *name)
4238 {
4239         uu_avl_pool_t   *pool;
4240         pool = fsperm->fsp_set->fsps_deleg_perm_avl_pool;
4241
4242         bzero(who_perm, sizeof (who_perm_t));
4243
4244         if ((who_perm->who_deleg_perm_avl = uu_avl_create(pool, NULL,
4245             UU_DEFAULT)) == NULL)
4246                 nomem();
4247
4248         who_perm->who_type = type;
4249         who_perm->who_name = name;
4250         who_perm->who_fsperm = fsperm;
4251 }
4252
4253 static inline void
4254 who_perm_fini(who_perm_t *who_perm)
4255 {
4256         deleg_perm_node_t *node = uu_avl_first(who_perm->who_deleg_perm_avl);
4257
4258         while (node != NULL) {
4259                 deleg_perm_node_t *next_node =
4260                     uu_avl_next(who_perm->who_deleg_perm_avl, node);
4261
4262                 uu_avl_remove(who_perm->who_deleg_perm_avl, node);
4263                 free(node);
4264                 node = next_node;
4265         }
4266
4267         uu_avl_destroy(who_perm->who_deleg_perm_avl);
4268 }
4269
4270 static inline void
4271 fs_perm_init(fs_perm_t *fsperm, fs_perm_set_t *fspset, const char *fsname)
4272 {
4273         uu_avl_pool_t   *nset_pool = fspset->fsps_named_set_avl_pool;
4274         uu_avl_pool_t   *who_pool = fspset->fsps_who_perm_avl_pool;
4275
4276         bzero(fsperm, sizeof (fs_perm_t));
4277
4278         if ((fsperm->fsp_sc_avl = uu_avl_create(nset_pool, NULL, UU_DEFAULT))
4279             == NULL)
4280                 nomem();
4281
4282         if ((fsperm->fsp_uge_avl = uu_avl_create(who_pool, NULL, UU_DEFAULT))
4283             == NULL)
4284                 nomem();
4285
4286         fsperm->fsp_set = fspset;
4287         fsperm->fsp_name = fsname;
4288 }
4289
4290 static inline void
4291 fs_perm_fini(fs_perm_t *fsperm)
4292 {
4293         who_perm_node_t *node = uu_avl_first(fsperm->fsp_sc_avl);
4294         while (node != NULL) {
4295                 who_perm_node_t *next_node = uu_avl_next(fsperm->fsp_sc_avl,
4296                     node);
4297                 who_perm_t *who_perm = &node->who_perm;
4298                 who_perm_fini(who_perm);
4299                 uu_avl_remove(fsperm->fsp_sc_avl, node);
4300                 free(node);
4301                 node = next_node;
4302         }
4303
4304         node = uu_avl_first(fsperm->fsp_uge_avl);
4305         while (node != NULL) {
4306                 who_perm_node_t *next_node = uu_avl_next(fsperm->fsp_uge_avl,
4307                     node);
4308                 who_perm_t *who_perm = &node->who_perm;
4309                 who_perm_fini(who_perm);
4310                 uu_avl_remove(fsperm->fsp_uge_avl, node);
4311                 free(node);
4312                 node = next_node;
4313         }
4314
4315         uu_avl_destroy(fsperm->fsp_sc_avl);
4316         uu_avl_destroy(fsperm->fsp_uge_avl);
4317 }
4318
4319 static void inline
4320 set_deleg_perm_node(uu_avl_t *avl, deleg_perm_node_t *node,
4321     zfs_deleg_who_type_t who_type, const char *name, char locality)
4322 {
4323         uu_avl_index_t idx = 0;
4324
4325         deleg_perm_node_t *found_node = NULL;
4326         deleg_perm_t    *deleg_perm = &node->dpn_perm;
4327
4328         deleg_perm_init(deleg_perm, who_type, name);
4329
4330         if ((found_node = uu_avl_find(avl, node, NULL, &idx))
4331             == NULL)
4332                 uu_avl_insert(avl, node, idx);
4333         else {
4334                 node = found_node;
4335                 deleg_perm = &node->dpn_perm;
4336         }
4337
4338
4339         switch (locality) {
4340         case ZFS_DELEG_LOCAL:
4341                 deleg_perm->dp_local = B_TRUE;
4342                 break;
4343         case ZFS_DELEG_DESCENDENT:
4344                 deleg_perm->dp_descend = B_TRUE;
4345                 break;
4346         case ZFS_DELEG_NA:
4347                 break;
4348         default:
4349                 assert(B_FALSE); /* invalid locality */
4350         }
4351 }
4352
4353 static inline int
4354 parse_who_perm(who_perm_t *who_perm, nvlist_t *nvl, char locality)
4355 {
4356         nvpair_t *nvp = NULL;
4357         fs_perm_set_t *fspset = who_perm->who_fsperm->fsp_set;
4358         uu_avl_t *avl = who_perm->who_deleg_perm_avl;
4359         zfs_deleg_who_type_t who_type = who_perm->who_type;
4360
4361         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4362                 const char *name = nvpair_name(nvp);
4363                 data_type_t type = nvpair_type(nvp);
4364                 uu_avl_pool_t *avl_pool = fspset->fsps_deleg_perm_avl_pool;
4365                 deleg_perm_node_t *node =
4366                     safe_malloc(sizeof (deleg_perm_node_t));
4367
4368                 assert(type == DATA_TYPE_BOOLEAN);
4369
4370                 uu_avl_node_init(node, &node->dpn_avl_node, avl_pool);
4371                 set_deleg_perm_node(avl, node, who_type, name, locality);
4372         }
4373
4374         return (0);
4375 }
4376
4377 static inline int
4378 parse_fs_perm(fs_perm_t *fsperm, nvlist_t *nvl)
4379 {
4380         nvpair_t *nvp = NULL;
4381         fs_perm_set_t *fspset = fsperm->fsp_set;
4382
4383         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4384                 nvlist_t *nvl2 = NULL;
4385                 const char *name = nvpair_name(nvp);
4386                 uu_avl_t *avl = NULL;
4387                 uu_avl_pool_t *avl_pool;
4388                 zfs_deleg_who_type_t perm_type = name[0];
4389                 char perm_locality = name[1];
4390                 const char *perm_name = name + 3;
4391                 boolean_t is_set = B_TRUE;
4392                 who_perm_t *who_perm = NULL;
4393
4394                 assert('$' == name[2]);
4395
4396                 if (nvpair_value_nvlist(nvp, &nvl2) != 0)
4397                         return (-1);
4398
4399                 switch (perm_type) {
4400                 case ZFS_DELEG_CREATE:
4401                 case ZFS_DELEG_CREATE_SETS:
4402                 case ZFS_DELEG_NAMED_SET:
4403                 case ZFS_DELEG_NAMED_SET_SETS:
4404                         avl_pool = fspset->fsps_named_set_avl_pool;
4405                         avl = fsperm->fsp_sc_avl;
4406                         break;
4407                 case ZFS_DELEG_USER:
4408                 case ZFS_DELEG_USER_SETS:
4409                 case ZFS_DELEG_GROUP:
4410                 case ZFS_DELEG_GROUP_SETS:
4411                 case ZFS_DELEG_EVERYONE:
4412                 case ZFS_DELEG_EVERYONE_SETS:
4413                         avl_pool = fspset->fsps_who_perm_avl_pool;
4414                         avl = fsperm->fsp_uge_avl;
4415                         break;
4416                 }
4417
4418                 if (is_set) {
4419                         who_perm_node_t *found_node = NULL;
4420                         who_perm_node_t *node = safe_malloc(
4421                             sizeof (who_perm_node_t));
4422                         who_perm = &node->who_perm;
4423                         uu_avl_index_t idx = 0;
4424
4425                         uu_avl_node_init(node, &node->who_avl_node, avl_pool);
4426                         who_perm_init(who_perm, fsperm, perm_type, perm_name);
4427
4428                         if ((found_node = uu_avl_find(avl, node, NULL, &idx))
4429                             == NULL) {
4430                                 if (avl == fsperm->fsp_uge_avl) {
4431                                         uid_t rid = 0;
4432                                         struct passwd *p = NULL;
4433                                         struct group *g = NULL;
4434                                         const char *nice_name = NULL;
4435
4436                                         switch (perm_type) {
4437                                         case ZFS_DELEG_USER_SETS:
4438                                         case ZFS_DELEG_USER:
4439                                                 rid = atoi(perm_name);
4440                                                 p = getpwuid(rid);
4441                                                 if (p)
4442                                                         nice_name = p->pw_name;
4443                                                 break;
4444                                         case ZFS_DELEG_GROUP_SETS:
4445                                         case ZFS_DELEG_GROUP:
4446                                                 rid = atoi(perm_name);
4447                                                 g = getgrgid(rid);
4448                                                 if (g)
4449                                                         nice_name = g->gr_name;
4450                                                 break;
4451                                         }
4452
4453                                         if (nice_name != NULL)
4454                                                 (void) strlcpy(
4455                                                     node->who_perm.who_ug_name,
4456                                                     nice_name, 256);
4457                                 }
4458
4459                                 uu_avl_insert(avl, node, idx);
4460                         } else {
4461                                 node = found_node;
4462                                 who_perm = &node->who_perm;
4463                         }
4464                 }
4465
4466                 (void) parse_who_perm(who_perm, nvl2, perm_locality);
4467         }
4468
4469         return (0);
4470 }
4471
4472 static inline int
4473 parse_fs_perm_set(fs_perm_set_t *fspset, nvlist_t *nvl)
4474 {
4475         nvpair_t *nvp = NULL;
4476         uu_avl_index_t idx = 0;
4477
4478         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4479                 nvlist_t *nvl2 = NULL;
4480                 const char *fsname = nvpair_name(nvp);
4481                 data_type_t type = nvpair_type(nvp);
4482                 fs_perm_t *fsperm = NULL;
4483                 fs_perm_node_t *node = safe_malloc(sizeof (fs_perm_node_t));
4484                 if (node == NULL)
4485                         nomem();
4486
4487                 fsperm = &node->fspn_fsperm;
4488
4489                 assert(DATA_TYPE_NVLIST == type);
4490
4491                 uu_list_node_init(node, &node->fspn_list_node,
4492                     fspset->fsps_list_pool);
4493
4494                 idx = uu_list_numnodes(fspset->fsps_list);
4495                 fs_perm_init(fsperm, fspset, fsname);
4496
4497                 if (nvpair_value_nvlist(nvp, &nvl2) != 0)
4498                         return (-1);
4499
4500                 (void) parse_fs_perm(fsperm, nvl2);
4501
4502                 uu_list_insert(fspset->fsps_list, node, idx);
4503         }
4504
4505         return (0);
4506 }
4507
4508 static inline const char *
4509 deleg_perm_comment(zfs_deleg_note_t note)
4510 {
4511         const char *str = "";
4512
4513         /* subcommands */
4514         switch (note) {
4515                 /* SUBCOMMANDS */
4516         case ZFS_DELEG_NOTE_ALLOW:
4517                 str = gettext("Must also have the permission that is being"
4518                     "\n\t\t\t\tallowed");
4519                 break;
4520         case ZFS_DELEG_NOTE_CLONE:
4521                 str = gettext("Must also have the 'create' ability and 'mount'"
4522                     "\n\t\t\t\tability in the origin file system");
4523                 break;
4524         case ZFS_DELEG_NOTE_CREATE:
4525                 str = gettext("Must also have the 'mount' ability");
4526                 break;
4527         case ZFS_DELEG_NOTE_DESTROY:
4528                 str = gettext("Must also have the 'mount' ability");
4529                 break;
4530         case ZFS_DELEG_NOTE_DIFF:
4531                 str = gettext("Allows lookup of paths within a dataset;"
4532                     "\n\t\t\t\tgiven an object number. Ordinary users need this"
4533                     "\n\t\t\t\tin order to use zfs diff");
4534                 break;
4535         case ZFS_DELEG_NOTE_HOLD:
4536                 str = gettext("Allows adding a user hold to a snapshot");
4537                 break;
4538         case ZFS_DELEG_NOTE_MOUNT:
4539                 str = gettext("Allows mount/umount of ZFS datasets");
4540                 break;
4541         case ZFS_DELEG_NOTE_PROMOTE:
4542                 str = gettext("Must also have the 'mount'\n\t\t\t\tand"
4543                     " 'promote' ability in the origin file system");
4544                 break;
4545         case ZFS_DELEG_NOTE_RECEIVE:
4546                 str = gettext("Must also have the 'mount' and 'create'"
4547                     " ability");
4548                 break;
4549         case ZFS_DELEG_NOTE_RELEASE:
4550                 str = gettext("Allows releasing a user hold which\n\t\t\t\t"
4551                     "might destroy the snapshot");
4552                 break;
4553         case ZFS_DELEG_NOTE_RENAME:
4554                 str = gettext("Must also have the 'mount' and 'create'"
4555                     "\n\t\t\t\tability in the new parent");
4556                 break;
4557         case ZFS_DELEG_NOTE_ROLLBACK:
4558                 str = gettext("");
4559                 break;
4560         case ZFS_DELEG_NOTE_SEND:
4561                 str = gettext("");
4562                 break;
4563         case ZFS_DELEG_NOTE_SHARE:
4564                 str = gettext("Allows sharing file systems over NFS or SMB"
4565                     "\n\t\t\t\tprotocols");
4566                 break;
4567         case ZFS_DELEG_NOTE_SNAPSHOT:
4568                 str = gettext("");
4569                 break;
4570 /*
4571  *      case ZFS_DELEG_NOTE_VSCAN:
4572  *              str = gettext("");
4573  *              break;
4574  */
4575                 /* OTHER */
4576         case ZFS_DELEG_NOTE_GROUPQUOTA:
4577                 str = gettext("Allows accessing any groupquota@... property");
4578                 break;
4579         case ZFS_DELEG_NOTE_GROUPUSED:
4580                 str = gettext("Allows reading any groupused@... property");
4581                 break;
4582         case ZFS_DELEG_NOTE_USERPROP:
4583                 str = gettext("Allows changing any user property");
4584                 break;
4585         case ZFS_DELEG_NOTE_USERQUOTA:
4586                 str = gettext("Allows accessing any userquota@... property");
4587                 break;
4588         case ZFS_DELEG_NOTE_USERUSED:
4589                 str = gettext("Allows reading any userused@... property");
4590                 break;
4591                 /* other */
4592         default:
4593                 str = "";
4594         }
4595
4596         return (str);
4597 }
4598
4599 struct allow_opts {
4600         boolean_t local;
4601         boolean_t descend;
4602         boolean_t user;
4603         boolean_t group;
4604         boolean_t everyone;
4605         boolean_t create;
4606         boolean_t set;
4607         boolean_t recursive; /* unallow only */
4608         boolean_t prt_usage;
4609
4610         boolean_t prt_perms;
4611         char *who;
4612         char *perms;
4613         const char *dataset;
4614 };
4615
4616 static inline int
4617 prop_cmp(const void *a, const void *b)
4618 {
4619         const char *str1 = *(const char **)a;
4620         const char *str2 = *(const char **)b;
4621         return (strcmp(str1, str2));
4622 }
4623
4624 static void
4625 allow_usage(boolean_t un, boolean_t requested, const char *msg)
4626 {
4627         const char *opt_desc[] = {
4628                 "-h", gettext("show this help message and exit"),
4629                 "-l", gettext("set permission locally"),
4630                 "-d", gettext("set permission for descents"),
4631                 "-u", gettext("set permission for user"),
4632                 "-g", gettext("set permission for group"),
4633                 "-e", gettext("set permission for everyone"),
4634                 "-c", gettext("set create time permission"),
4635                 "-s", gettext("define permission set"),
4636                 /* unallow only */
4637                 "-r", gettext("remove permissions recursively"),
4638         };
4639         size_t unallow_size = sizeof (opt_desc) / sizeof (char *);
4640         size_t allow_size = unallow_size - 2;
4641         const char *props[ZFS_NUM_PROPS];
4642         int i;
4643         size_t count = 0;
4644         FILE *fp = requested ? stdout : stderr;
4645         zprop_desc_t *pdtbl = zfs_prop_get_table();
4646         const char *fmt = gettext("%-16s %-14s\t%s\n");
4647
4648         (void) fprintf(fp, gettext("Usage: %s\n"), get_usage(un ? HELP_UNALLOW :
4649             HELP_ALLOW));
4650         (void) fprintf(fp, gettext("Options:\n"));
4651         for (i = 0; i < (un ? unallow_size : allow_size); i++) {
4652                 const char *opt = opt_desc[i++];
4653                 const char *optdsc = opt_desc[i];
4654                 (void) fprintf(fp, gettext("  %-10s  %s\n"), opt, optdsc);
4655         }
4656
4657         (void) fprintf(fp, gettext("\nThe following permissions are "
4658             "supported:\n\n"));
4659         (void) fprintf(fp, fmt, gettext("NAME"), gettext("TYPE"),
4660             gettext("NOTES"));
4661         for (i = 0; i < ZFS_NUM_DELEG_NOTES; i++) {
4662                 const char *perm_name = zfs_deleg_perm_tbl[i].z_perm;
4663                 zfs_deleg_note_t perm_note = zfs_deleg_perm_tbl[i].z_note;
4664                 const char *perm_type = deleg_perm_type(perm_note);
4665                 const char *perm_comment = deleg_perm_comment(perm_note);
4666                 (void) fprintf(fp, fmt, perm_name, perm_type, perm_comment);
4667         }
4668
4669         for (i = 0; i < ZFS_NUM_PROPS; i++) {
4670                 zprop_desc_t *pd = &pdtbl[i];
4671                 if (pd->pd_visible != B_TRUE)
4672                         continue;
4673
4674                 if (pd->pd_attr == PROP_READONLY)
4675                         continue;
4676
4677                 props[count++] = pd->pd_name;
4678         }
4679         props[count] = NULL;
4680
4681         qsort(props, count, sizeof (char *), prop_cmp);
4682
4683         for (i = 0; i < count; i++)
4684                 (void) fprintf(fp, fmt, props[i], gettext("property"), "");
4685
4686         if (msg != NULL)
4687                 (void) fprintf(fp, gettext("\nzfs: error: %s"), msg);
4688
4689         exit(requested ? 0 : 2);
4690 }
4691
4692 static inline const char *
4693 munge_args(int argc, char **argv, boolean_t un, size_t expected_argc,
4694     char **permsp)
4695 {
4696         if (un && argc == expected_argc - 1)
4697                 *permsp = NULL;
4698         else if (argc == expected_argc)
4699                 *permsp = argv[argc - 2];
4700         else
4701                 allow_usage(un, B_FALSE,
4702                     gettext("wrong number of parameters\n"));
4703
4704         return (argv[argc - 1]);
4705 }
4706
4707 static void
4708 parse_allow_args(int argc, char **argv, boolean_t un, struct allow_opts *opts)
4709 {
4710         int uge_sum = opts->user + opts->group + opts->everyone;
4711         int csuge_sum = opts->create + opts->set + uge_sum;
4712         int ldcsuge_sum = csuge_sum + opts->local + opts->descend;
4713         int all_sum = un ? ldcsuge_sum + opts->recursive : ldcsuge_sum;
4714
4715         if (uge_sum > 1)
4716                 allow_usage(un, B_FALSE,
4717                     gettext("-u, -g, and -e are mutually exclusive\n"));
4718
4719         if (opts->prt_usage)
4720                 if (argc == 0 && all_sum == 0)
4721                         allow_usage(un, B_TRUE, NULL);
4722                 else
4723                         usage(B_FALSE);
4724
4725         if (opts->set) {
4726                 if (csuge_sum > 1)
4727                         allow_usage(un, B_FALSE,
4728                             gettext("invalid options combined with -s\n"));
4729
4730                 opts->dataset = munge_args(argc, argv, un, 3, &opts->perms);
4731                 if (argv[0][0] != '@')
4732                         allow_usage(un, B_FALSE,
4733                             gettext("invalid set name: missing '@' prefix\n"));
4734                 opts->who = argv[0];
4735         } else if (opts->create) {
4736                 if (ldcsuge_sum > 1)
4737                         allow_usage(un, B_FALSE,
4738                             gettext("invalid options combined with -c\n"));
4739                 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
4740         } else if (opts->everyone) {
4741                 if (csuge_sum > 1)
4742                         allow_usage(un, B_FALSE,
4743                             gettext("invalid options combined with -e\n"));
4744                 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
4745         } else if (uge_sum == 0 && argc > 0 && strcmp(argv[0], "everyone")
4746             == 0) {
4747                 opts->everyone = B_TRUE;
4748                 argc--;
4749                 argv++;
4750                 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
4751         } else if (argc == 1 && !un) {
4752                 opts->prt_perms = B_TRUE;
4753                 opts->dataset = argv[argc-1];
4754         } else {
4755                 opts->dataset = munge_args(argc, argv, un, 3, &opts->perms);
4756                 opts->who = argv[0];
4757         }
4758
4759         if (!opts->local && !opts->descend) {
4760                 opts->local = B_TRUE;
4761                 opts->descend = B_TRUE;
4762         }
4763 }
4764
4765 static void
4766 store_allow_perm(zfs_deleg_who_type_t type, boolean_t local, boolean_t descend,
4767     const char *who, char *perms, nvlist_t *top_nvl)
4768 {
4769         int i;
4770         char ld[2] = { '\0', '\0' };
4771         char who_buf[ZFS_MAXNAMELEN+32];
4772         char base_type;
4773         char set_type;
4774         nvlist_t *base_nvl = NULL;
4775         nvlist_t *set_nvl = NULL;
4776         nvlist_t *nvl;
4777
4778         if (nvlist_alloc(&base_nvl, NV_UNIQUE_NAME, 0) != 0)
4779                 nomem();
4780         if (nvlist_alloc(&set_nvl, NV_UNIQUE_NAME, 0) !=  0)
4781                 nomem();
4782
4783         switch (type) {
4784         case ZFS_DELEG_NAMED_SET_SETS:
4785         case ZFS_DELEG_NAMED_SET:
4786                 set_type = ZFS_DELEG_NAMED_SET_SETS;
4787                 base_type = ZFS_DELEG_NAMED_SET;
4788                 ld[0] = ZFS_DELEG_NA;
4789                 break;
4790         case ZFS_DELEG_CREATE_SETS:
4791         case ZFS_DELEG_CREATE:
4792                 set_type = ZFS_DELEG_CREATE_SETS;
4793                 base_type = ZFS_DELEG_CREATE;
4794                 ld[0] = ZFS_DELEG_NA;
4795                 break;
4796         case ZFS_DELEG_USER_SETS:
4797         case ZFS_DELEG_USER:
4798                 set_type = ZFS_DELEG_USER_SETS;
4799                 base_type = ZFS_DELEG_USER;
4800                 if (local)
4801                         ld[0] = ZFS_DELEG_LOCAL;
4802                 if (descend)
4803                         ld[1] = ZFS_DELEG_DESCENDENT;
4804                 break;
4805         case ZFS_DELEG_GROUP_SETS:
4806         case ZFS_DELEG_GROUP:
4807                 set_type = ZFS_DELEG_GROUP_SETS;
4808                 base_type = ZFS_DELEG_GROUP;
4809                 if (local)
4810                         ld[0] = ZFS_DELEG_LOCAL;
4811                 if (descend)
4812                         ld[1] = ZFS_DELEG_DESCENDENT;
4813                 break;
4814         case ZFS_DELEG_EVERYONE_SETS:
4815         case ZFS_DELEG_EVERYONE:
4816                 set_type = ZFS_DELEG_EVERYONE_SETS;
4817                 base_type = ZFS_DELEG_EVERYONE;
4818                 if (local)
4819                         ld[0] = ZFS_DELEG_LOCAL;
4820                 if (descend)
4821                         ld[1] = ZFS_DELEG_DESCENDENT;
4822         }
4823
4824         if (perms != NULL) {
4825                 char *curr = perms;
4826                 char *end = curr + strlen(perms);
4827
4828                 while (curr < end) {
4829                         char *delim = strchr(curr, ',');
4830                         if (delim == NULL)
4831                                 delim = end;
4832                         else
4833                                 *delim = '\0';
4834
4835                         if (curr[0] == '@')
4836                                 nvl = set_nvl;
4837                         else
4838                                 nvl = base_nvl;
4839
4840                         (void) nvlist_add_boolean(nvl, curr);
4841                         if (delim != end)
4842                                 *delim = ',';
4843                         curr = delim + 1;
4844                 }
4845
4846                 for (i = 0; i < 2; i++) {
4847                         char locality = ld[i];
4848                         if (locality == 0)
4849                                 continue;
4850
4851                         if (!nvlist_empty(base_nvl)) {
4852                                 if (who != NULL)
4853                                         (void) snprintf(who_buf,
4854                                             sizeof (who_buf), "%c%c$%s",
4855                                             base_type, locality, who);
4856                                 else
4857                                         (void) snprintf(who_buf,
4858                                             sizeof (who_buf), "%c%c$",
4859                                             base_type, locality);
4860
4861                                 (void) nvlist_add_nvlist(top_nvl, who_buf,
4862                                     base_nvl);
4863                         }
4864
4865
4866                         if (!nvlist_empty(set_nvl)) {
4867                                 if (who != NULL)
4868                                         (void) snprintf(who_buf,
4869                                             sizeof (who_buf), "%c%c$%s",
4870                                             set_type, locality, who);
4871                                 else
4872                                         (void) snprintf(who_buf,
4873                                             sizeof (who_buf), "%c%c$",
4874                                             set_type, locality);
4875
4876                                 (void) nvlist_add_nvlist(top_nvl, who_buf,
4877                                     set_nvl);
4878                         }
4879                 }
4880         } else {
4881                 for (i = 0; i < 2; i++) {
4882                         char locality = ld[i];
4883                         if (locality == 0)
4884                                 continue;
4885
4886                         if (who != NULL)
4887                                 (void) snprintf(who_buf, sizeof (who_buf),
4888                                     "%c%c$%s", base_type, locality, who);
4889                         else
4890                                 (void) snprintf(who_buf, sizeof (who_buf),
4891                                     "%c%c$", base_type, locality);
4892                         (void) nvlist_add_boolean(top_nvl, who_buf);
4893
4894                         if (who != NULL)
4895                                 (void) snprintf(who_buf, sizeof (who_buf),
4896                                     "%c%c$%s", set_type, locality, who);
4897                         else
4898                                 (void) snprintf(who_buf, sizeof (who_buf),
4899                                     "%c%c$", set_type, locality);
4900                         (void) nvlist_add_boolean(top_nvl, who_buf);
4901                 }
4902         }
4903 }
4904
4905 static int
4906 construct_fsacl_list(boolean_t un, struct allow_opts *opts, nvlist_t **nvlp)
4907 {
4908         if (nvlist_alloc(nvlp, NV_UNIQUE_NAME, 0) != 0)
4909                 nomem();
4910
4911         if (opts->set) {
4912                 store_allow_perm(ZFS_DELEG_NAMED_SET, opts->local,
4913                     opts->descend, opts->who, opts->perms, *nvlp);
4914         } else if (opts->create) {
4915                 store_allow_perm(ZFS_DELEG_CREATE, opts->local,
4916                     opts->descend, NULL, opts->perms, *nvlp);
4917         } else if (opts->everyone) {
4918                 store_allow_perm(ZFS_DELEG_EVERYONE, opts->local,
4919                     opts->descend, NULL, opts->perms, *nvlp);
4920         } else {
4921                 char *curr = opts->who;
4922                 char *end = curr + strlen(curr);
4923
4924                 while (curr < end) {
4925                         const char *who;
4926                         zfs_deleg_who_type_t who_type;
4927                         char *endch;
4928                         char *delim = strchr(curr, ',');
4929                         char errbuf[256];
4930                         char id[64];
4931                         struct passwd *p = NULL;
4932                         struct group *g = NULL;
4933
4934                         uid_t rid;
4935                         if (delim == NULL)
4936                                 delim = end;
4937                         else
4938                                 *delim = '\0';
4939
4940                         rid = (uid_t)strtol(curr, &endch, 0);
4941                         if (opts->user) {
4942                                 who_type = ZFS_DELEG_USER;
4943                                 if (*endch != '\0')
4944                                         p = getpwnam(curr);
4945                                 else
4946                                         p = getpwuid(rid);
4947
4948                                 if (p != NULL)
4949                                         rid = p->pw_uid;
4950                                 else {
4951                                         (void) snprintf(errbuf, 256, gettext(
4952                                             "invalid user %s"), curr);
4953                                         allow_usage(un, B_TRUE, errbuf);
4954                                 }
4955                         } else if (opts->group) {
4956                                 who_type = ZFS_DELEG_GROUP;
4957                                 if (*endch != '\0')
4958                                         g = getgrnam(curr);
4959                                 else
4960                                         g = getgrgid(rid);
4961
4962                                 if (g != NULL)
4963                                         rid = g->gr_gid;
4964                                 else {
4965                                         (void) snprintf(errbuf, 256, gettext(
4966                                             "invalid group %s"),  curr);
4967                                         allow_usage(un, B_TRUE, errbuf);
4968                                 }
4969                         } else {
4970                                 if (*endch != '\0') {
4971                                         p = getpwnam(curr);
4972                                 } else {
4973                                         p = getpwuid(rid);
4974                                 }
4975
4976                                 if (p == NULL)
4977                                         if (*endch != '\0') {
4978                                                 g = getgrnam(curr);
4979                                         } else {
4980                                                 g = getgrgid(rid);
4981                                         }
4982
4983                                 if (p != NULL) {
4984                                         who_type = ZFS_DELEG_USER;
4985                                         rid = p->pw_uid;
4986                                 } else if (g != NULL) {
4987                                         who_type = ZFS_DELEG_GROUP;
4988                                         rid = g->gr_gid;
4989                                 } else {
4990                                         (void) snprintf(errbuf, 256, gettext(
4991                                             "invalid user/group %s"), curr);
4992                                         allow_usage(un, B_TRUE, errbuf);
4993                                 }
4994                         }
4995
4996                         (void) sprintf(id, "%u", rid);
4997                         who = id;
4998
4999                         store_allow_perm(who_type, opts->local,
5000                             opts->descend, who, opts->perms, *nvlp);
5001                         curr = delim + 1;
5002                 }
5003         }
5004
5005         return (0);
5006 }
5007
5008 static void
5009 print_set_creat_perms(uu_avl_t *who_avl)
5010 {
5011         const char *sc_title[] = {
5012                 gettext("Permission sets:\n"),
5013                 gettext("Create time permissions:\n"),
5014                 NULL
5015         };
5016         const char **title_ptr = sc_title;
5017         who_perm_node_t *who_node = NULL;
5018         int prev_weight = -1;
5019
5020         for (who_node = uu_avl_first(who_avl); who_node != NULL;
5021             who_node = uu_avl_next(who_avl, who_node)) {
5022                 uu_avl_t *avl = who_node->who_perm.who_deleg_perm_avl;
5023                 zfs_deleg_who_type_t who_type = who_node->who_perm.who_type;
5024                 const char *who_name = who_node->who_perm.who_name;
5025                 int weight = who_type2weight(who_type);
5026                 boolean_t first = B_TRUE;
5027                 deleg_perm_node_t *deleg_node;
5028
5029                 if (prev_weight != weight) {
5030                         (void) printf(*title_ptr++);
5031                         prev_weight = weight;
5032                 }
5033
5034                 if (who_name == NULL || strnlen(who_name, 1) == 0)
5035                         (void) printf("\t");
5036                 else
5037                         (void) printf("\t%s ", who_name);
5038
5039                 for (deleg_node = uu_avl_first(avl); deleg_node != NULL;
5040                     deleg_node = uu_avl_next(avl, deleg_node)) {
5041                         if (first) {
5042                                 (void) printf("%s",
5043                                     deleg_node->dpn_perm.dp_name);
5044                                 first = B_FALSE;
5045                         } else
5046                                 (void) printf(",%s",
5047                                     deleg_node->dpn_perm.dp_name);
5048                 }
5049
5050                 (void) printf("\n");
5051         }
5052 }
5053
5054 static void inline
5055 print_uge_deleg_perms(uu_avl_t *who_avl, boolean_t local, boolean_t descend,
5056     const char *title)
5057 {
5058         who_perm_node_t *who_node = NULL;
5059         boolean_t prt_title = B_TRUE;
5060         uu_avl_walk_t *walk;
5061
5062         if ((walk = uu_avl_walk_start(who_avl, UU_WALK_ROBUST)) == NULL)
5063                 nomem();
5064
5065         while ((who_node = uu_avl_walk_next(walk)) != NULL) {
5066                 const char *who_name = who_node->who_perm.who_name;
5067                 const char *nice_who_name = who_node->who_perm.who_ug_name;
5068                 uu_avl_t *avl = who_node->who_perm.who_deleg_perm_avl;
5069                 zfs_deleg_who_type_t who_type = who_node->who_perm.who_type;
5070                 char delim = ' ';
5071                 deleg_perm_node_t *deleg_node;
5072                 boolean_t prt_who = B_TRUE;
5073
5074                 for (deleg_node = uu_avl_first(avl);
5075                     deleg_node != NULL;
5076                     deleg_node = uu_avl_next(avl, deleg_node)) {
5077                         if (local != deleg_node->dpn_perm.dp_local ||
5078                             descend != deleg_node->dpn_perm.dp_descend)
5079                                 continue;
5080
5081                         if (prt_who) {
5082                                 const char *who = NULL;
5083                                 if (prt_title) {
5084                                         prt_title = B_FALSE;
5085                                         (void) printf(title);
5086                                 }
5087
5088                                 switch (who_type) {
5089                                 case ZFS_DELEG_USER_SETS:
5090                                 case ZFS_DELEG_USER:
5091                                         who = gettext("user");
5092                                         if (nice_who_name)
5093                                                 who_name  = nice_who_name;
5094                                         break;
5095                                 case ZFS_DELEG_GROUP_SETS:
5096                                 case ZFS_DELEG_GROUP:
5097                                         who = gettext("group");
5098                                         if (nice_who_name)
5099                                                 who_name  = nice_who_name;
5100                                         break;
5101                                 case ZFS_DELEG_EVERYONE_SETS:
5102                                 case ZFS_DELEG_EVERYONE:
5103                                         who = gettext("everyone");
5104                                         who_name = NULL;
5105                                 }
5106
5107                                 prt_who = B_FALSE;
5108                                 if (who_name == NULL)
5109                                         (void) printf("\t%s", who);
5110                                 else
5111                                         (void) printf("\t%s %s", who, who_name);
5112                         }
5113
5114                         (void) printf("%c%s", delim,
5115                             deleg_node->dpn_perm.dp_name);
5116                         delim = ',';
5117                 }
5118
5119                 if (!prt_who)
5120                         (void) printf("\n");
5121         }
5122
5123         uu_avl_walk_end(walk);
5124 }
5125
5126 static void
5127 print_fs_perms(fs_perm_set_t *fspset)
5128 {
5129         fs_perm_node_t *node = NULL;
5130         char buf[ZFS_MAXNAMELEN+32];
5131         const char *dsname = buf;
5132
5133         for (node = uu_list_first(fspset->fsps_list); node != NULL;
5134             node = uu_list_next(fspset->fsps_list, node)) {
5135                 uu_avl_t *sc_avl = node->fspn_fsperm.fsp_sc_avl;
5136                 uu_avl_t *uge_avl = node->fspn_fsperm.fsp_uge_avl;
5137                 int left = 0;
5138
5139                 (void) snprintf(buf, ZFS_MAXNAMELEN+32,
5140                     gettext("---- Permissions on %s "),
5141                     node->fspn_fsperm.fsp_name);
5142                 (void) printf(dsname);
5143                 left = 70 - strlen(buf);
5144                 while (left-- > 0)
5145                         (void) printf("-");
5146                 (void) printf("\n");
5147
5148                 print_set_creat_perms(sc_avl);
5149                 print_uge_deleg_perms(uge_avl, B_TRUE, B_FALSE,
5150                     gettext("Local permissions:\n"));
5151                 print_uge_deleg_perms(uge_avl, B_FALSE, B_TRUE,
5152                     gettext("Descendent permissions:\n"));
5153                 print_uge_deleg_perms(uge_avl, B_TRUE, B_TRUE,
5154                     gettext("Local+Descendent permissions:\n"));
5155         }
5156 }
5157
5158 static fs_perm_set_t fs_perm_set = { NULL, NULL, NULL, NULL };
5159
5160 struct deleg_perms {
5161         boolean_t un;
5162         nvlist_t *nvl;
5163 };
5164
5165 static int
5166 set_deleg_perms(zfs_handle_t *zhp, void *data)
5167 {
5168         struct deleg_perms *perms = (struct deleg_perms *)data;
5169         zfs_type_t zfs_type = zfs_get_type(zhp);
5170
5171         if (zfs_type != ZFS_TYPE_FILESYSTEM && zfs_type != ZFS_TYPE_VOLUME)
5172                 return (0);
5173
5174         return (zfs_set_fsacl(zhp, perms->un, perms->nvl));
5175 }
5176
5177 static int
5178 zfs_do_allow_unallow_impl(int argc, char **argv, boolean_t un)
5179 {
5180         zfs_handle_t *zhp;
5181         nvlist_t *perm_nvl = NULL;
5182         nvlist_t *update_perm_nvl = NULL;
5183         int error = 1;
5184         int c;
5185         struct allow_opts opts = { 0 };
5186
5187         const char *optstr = un ? "ldugecsrh" : "ldugecsh";
5188
5189         /* check opts */
5190         while ((c = getopt(argc, argv, optstr)) != -1) {
5191                 switch (c) {
5192                 case 'l':
5193                         opts.local = B_TRUE;
5194                         break;
5195                 case 'd':
5196                         opts.descend = B_TRUE;
5197                         break;
5198                 case 'u':
5199                         opts.user = B_TRUE;
5200                         break;
5201                 case 'g':
5202                         opts.group = B_TRUE;
5203                         break;
5204                 case 'e':
5205                         opts.everyone = B_TRUE;
5206                         break;
5207                 case 's':
5208                         opts.set = B_TRUE;
5209                         break;
5210                 case 'c':
5211                         opts.create = B_TRUE;
5212                         break;
5213                 case 'r':
5214                         opts.recursive = B_TRUE;
5215                         break;
5216                 case ':':
5217                         (void) fprintf(stderr, gettext("missing argument for "
5218                             "'%c' option\n"), optopt);
5219                         usage(B_FALSE);
5220                         break;
5221                 case 'h':
5222                         opts.prt_usage = B_TRUE;
5223                         break;
5224                 case '?':
5225                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5226                             optopt);
5227                         usage(B_FALSE);
5228                 }
5229         }
5230
5231         argc -= optind;
5232         argv += optind;
5233
5234         /* check arguments */
5235         parse_allow_args(argc, argv, un, &opts);
5236
5237         /* try to open the dataset */
5238         if ((zhp = zfs_open(g_zfs, opts.dataset, ZFS_TYPE_FILESYSTEM |
5239             ZFS_TYPE_VOLUME)) == NULL) {
5240                 (void) fprintf(stderr, "Failed to open dataset: %s\n",
5241                     opts.dataset);
5242                 return (-1);
5243         }
5244
5245         if (zfs_get_fsacl(zhp, &perm_nvl) != 0)
5246                 goto cleanup2;
5247
5248         fs_perm_set_init(&fs_perm_set);
5249         if (parse_fs_perm_set(&fs_perm_set, perm_nvl) != 0) {
5250                 (void) fprintf(stderr, "Failed to parse fsacl permissions\n");
5251                 goto cleanup1;
5252         }
5253
5254         if (opts.prt_perms)
5255                 print_fs_perms(&fs_perm_set);
5256         else {
5257                 (void) construct_fsacl_list(un, &opts, &update_perm_nvl);
5258                 if (zfs_set_fsacl(zhp, un, update_perm_nvl) != 0)
5259                         goto cleanup0;
5260
5261                 if (un && opts.recursive) {
5262                         struct deleg_perms data = { un, update_perm_nvl };
5263                         if (zfs_iter_filesystems(zhp, set_deleg_perms,
5264                             &data) != 0)
5265                                 goto cleanup0;
5266                 }
5267         }
5268
5269         error = 0;
5270
5271 cleanup0:
5272         nvlist_free(perm_nvl);
5273         if (update_perm_nvl != NULL)
5274                 nvlist_free(update_perm_nvl);
5275 cleanup1:
5276         fs_perm_set_fini(&fs_perm_set);
5277 cleanup2:
5278         zfs_close(zhp);
5279
5280         return (error);
5281 }
5282
5283 static int
5284 zfs_do_allow(int argc, char **argv)
5285 {
5286         return (zfs_do_allow_unallow_impl(argc, argv, B_FALSE));
5287 }
5288
5289 static int
5290 zfs_do_unallow(int argc, char **argv)
5291 {
5292         return (zfs_do_allow_unallow_impl(argc, argv, B_TRUE));
5293 }
5294
5295 static int
5296 zfs_do_hold_rele_impl(int argc, char **argv, boolean_t holding)
5297 {
5298         int errors = 0;
5299         int i;
5300         const char *tag;
5301         boolean_t recursive = B_FALSE;
5302         const char *opts = holding ? "rt" : "r";
5303         int c;
5304
5305         /* check options */
5306         while ((c = getopt(argc, argv, opts)) != -1) {
5307                 switch (c) {
5308                 case 'r':
5309                         recursive = B_TRUE;
5310                         break;
5311                 case '?':
5312                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5313                             optopt);
5314                         usage(B_FALSE);
5315                 }
5316         }
5317
5318         argc -= optind;
5319         argv += optind;
5320
5321         /* check number of arguments */
5322         if (argc < 2)
5323                 usage(B_FALSE);
5324
5325         tag = argv[0];
5326         --argc;
5327         ++argv;
5328
5329         if (holding && tag[0] == '.') {
5330                 /* tags starting with '.' are reserved for libzfs */
5331                 (void) fprintf(stderr, gettext("tag may not start with '.'\n"));
5332                 usage(B_FALSE);
5333         }
5334
5335         for (i = 0; i < argc; ++i) {
5336                 zfs_handle_t *zhp;
5337                 char parent[ZFS_MAXNAMELEN];
5338                 const char *delim;
5339                 char *path = argv[i];
5340
5341                 delim = strchr(path, '@');
5342                 if (delim == NULL) {
5343                         (void) fprintf(stderr,
5344                             gettext("'%s' is not a snapshot\n"), path);
5345                         ++errors;
5346                         continue;
5347                 }
5348                 (void) strncpy(parent, path, delim - path);
5349                 parent[delim - path] = '\0';
5350
5351                 zhp = zfs_open(g_zfs, parent,
5352                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
5353                 if (zhp == NULL) {
5354                         ++errors;
5355                         continue;
5356                 }
5357                 if (holding) {
5358                         if (zfs_hold(zhp, delim+1, tag, recursive, -1) != 0)
5359                                 ++errors;
5360                 } else {
5361                         if (zfs_release(zhp, delim+1, tag, recursive) != 0)
5362                                 ++errors;
5363                 }
5364                 zfs_close(zhp);
5365         }
5366
5367         return (errors != 0);
5368 }
5369
5370 /*
5371  * zfs hold [-r] [-t] <tag> <snap> ...
5372  *
5373  *      -r      Recursively hold
5374  *
5375  * Apply a user-hold with the given tag to the list of snapshots.
5376  */
5377 static int
5378 zfs_do_hold(int argc, char **argv)
5379 {
5380         return (zfs_do_hold_rele_impl(argc, argv, B_TRUE));
5381 }
5382
5383 /*
5384  * zfs release [-r] <tag> <snap> ...
5385  *
5386  *      -r      Recursively release
5387  *
5388  * Release a user-hold with the given tag from the list of snapshots.
5389  */
5390 static int
5391 zfs_do_release(int argc, char **argv)
5392 {
5393         return (zfs_do_hold_rele_impl(argc, argv, B_FALSE));
5394 }
5395
5396 typedef struct holds_cbdata {
5397         boolean_t       cb_recursive;
5398         const char      *cb_snapname;
5399         nvlist_t        **cb_nvlp;
5400         size_t          cb_max_namelen;
5401         size_t          cb_max_taglen;
5402 } holds_cbdata_t;
5403
5404 #define STRFTIME_FMT_STR "%a %b %e %k:%M %Y"
5405 #define DATETIME_BUF_LEN (32)
5406 /*
5407  *
5408  */
5409 static void
5410 print_holds(boolean_t scripted, size_t nwidth, size_t tagwidth, nvlist_t *nvl)
5411 {
5412         int i;
5413         nvpair_t *nvp = NULL;
5414         char *hdr_cols[] = { "NAME", "TAG", "TIMESTAMP" };
5415         const char *col;
5416
5417         if (!scripted) {
5418                 for (i = 0; i < 3; i++) {
5419                         col = gettext(hdr_cols[i]);
5420                         if (i < 2)
5421                                 (void) printf("%-*s  ", i ? tagwidth : nwidth,
5422                                     col);
5423                         else
5424                                 (void) printf("%s\n", col);
5425                 }
5426         }
5427
5428         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
5429                 char *zname = nvpair_name(nvp);
5430                 nvlist_t *nvl2;
5431                 nvpair_t *nvp2 = NULL;
5432                 (void) nvpair_value_nvlist(nvp, &nvl2);
5433                 while ((nvp2 = nvlist_next_nvpair(nvl2, nvp2)) != NULL) {
5434                         char tsbuf[DATETIME_BUF_LEN];
5435                         char *tagname = nvpair_name(nvp2);
5436                         uint64_t val = 0;
5437                         time_t time;
5438                         struct tm t;
5439                         char sep = scripted ? '\t' : ' ';
5440                         size_t sepnum = scripted ? 1 : 2;
5441
5442                         (void) nvpair_value_uint64(nvp2, &val);
5443                         time = (time_t)val;
5444                         (void) localtime_r(&time, &t);
5445                         (void) strftime(tsbuf, DATETIME_BUF_LEN,
5446                             gettext(STRFTIME_FMT_STR), &t);
5447
5448                         (void) printf("%-*s%*c%-*s%*c%s\n", nwidth, zname,
5449                             sepnum, sep, tagwidth, tagname, sepnum, sep, tsbuf);
5450                 }
5451         }
5452 }
5453
5454 /*
5455  * Generic callback function to list a dataset or snapshot.
5456  */
5457 static int
5458 holds_callback(zfs_handle_t *zhp, void *data)
5459 {
5460         holds_cbdata_t *cbp = data;
5461         nvlist_t *top_nvl = *cbp->cb_nvlp;
5462         nvlist_t *nvl = NULL;
5463         nvpair_t *nvp = NULL;
5464         const char *zname = zfs_get_name(zhp);
5465         size_t znamelen = strnlen(zname, ZFS_MAXNAMELEN);
5466
5467         if (cbp->cb_recursive) {
5468                 const char *snapname;
5469                 char *delim  = strchr(zname, '@');
5470                 if (delim == NULL)
5471                         return (0);
5472
5473                 snapname = delim + 1;
5474                 if (strcmp(cbp->cb_snapname, snapname))
5475                         return (0);
5476         }
5477
5478         if (zfs_get_holds(zhp, &nvl) != 0)
5479                 return (-1);
5480
5481         if (znamelen > cbp->cb_max_namelen)
5482                 cbp->cb_max_namelen  = znamelen;
5483
5484         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
5485                 const char *tag = nvpair_name(nvp);
5486                 size_t taglen = strnlen(tag, MAXNAMELEN);
5487                 if (taglen > cbp->cb_max_taglen)
5488                         cbp->cb_max_taglen  = taglen;
5489         }
5490
5491         return (nvlist_add_nvlist(top_nvl, zname, nvl));
5492 }
5493
5494 /*
5495  * zfs holds [-r] <snap> ...
5496  *
5497  *      -r      Recursively hold
5498  */
5499 static int
5500 zfs_do_holds(int argc, char **argv)
5501 {
5502         int errors = 0;
5503         int c;
5504         int i;
5505         boolean_t scripted = B_FALSE;
5506         boolean_t recursive = B_FALSE;
5507         const char *opts = "rH";
5508         nvlist_t *nvl;
5509
5510         int types = ZFS_TYPE_SNAPSHOT;
5511         holds_cbdata_t cb = { 0 };
5512
5513         int limit = 0;
5514         int ret = 0;
5515         int flags = 0;
5516
5517         /* check options */
5518         while ((c = getopt(argc, argv, opts)) != -1) {
5519                 switch (c) {
5520                 case 'r':
5521                         recursive = B_TRUE;
5522                         break;
5523                 case 'H':
5524                         scripted = B_TRUE;
5525                         break;
5526                 case '?':
5527                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5528                             optopt);
5529                         usage(B_FALSE);
5530                 }
5531         }
5532
5533         if (recursive) {
5534                 types |= ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME;
5535                 flags |= ZFS_ITER_RECURSE;
5536         }
5537
5538         argc -= optind;
5539         argv += optind;
5540
5541         /* check number of arguments */
5542         if (argc < 1)
5543                 usage(B_FALSE);
5544
5545         if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0)
5546                 nomem();
5547
5548         for (i = 0; i < argc; ++i) {
5549                 char *snapshot = argv[i];
5550                 const char *delim;
5551                 const char *snapname;
5552
5553                 delim = strchr(snapshot, '@');
5554                 if (delim == NULL) {
5555                         (void) fprintf(stderr,
5556                             gettext("'%s' is not a snapshot\n"), snapshot);
5557                         ++errors;
5558                         continue;
5559                 }
5560                 snapname = delim + 1;
5561                 if (recursive)
5562                         snapshot[delim - snapshot] = '\0';
5563
5564                 cb.cb_recursive = recursive;
5565                 cb.cb_snapname = snapname;
5566                 cb.cb_nvlp = &nvl;
5567
5568                 /*
5569                  *  1. collect holds data, set format options
5570                  */
5571                 ret = zfs_for_each(argc, argv, flags, types, NULL, NULL, limit,
5572                     holds_callback, &cb);
5573                 if (ret != 0)
5574                         ++errors;
5575         }
5576
5577         /*
5578          *  2. print holds data
5579          */
5580         print_holds(scripted, cb.cb_max_namelen, cb.cb_max_taglen, nvl);
5581
5582         if (nvlist_empty(nvl))
5583                 (void) printf(gettext("no datasets available\n"));
5584
5585         nvlist_free(nvl);
5586
5587         return (0 != errors);
5588 }
5589
5590 #define CHECK_SPINNER 30
5591 #define SPINNER_TIME 3          /* seconds */
5592 #define MOUNT_TIME 5            /* seconds */
5593
5594 static int
5595 get_one_dataset(zfs_handle_t *zhp, void *data)
5596 {
5597         static char *spin[] = { "-", "\\", "|", "/" };
5598         static int spinval = 0;
5599         static int spincheck = 0;
5600         static time_t last_spin_time = (time_t)0;
5601         get_all_cb_t *cbp = data;
5602         zfs_type_t type = zfs_get_type(zhp);
5603
5604         if (cbp->cb_verbose) {
5605                 if (--spincheck < 0) {
5606                         time_t now = time(NULL);
5607                         if (last_spin_time + SPINNER_TIME < now) {
5608                                 update_progress(spin[spinval++ % 4]);
5609                                 last_spin_time = now;
5610                         }
5611                         spincheck = CHECK_SPINNER;
5612                 }
5613         }
5614
5615         /*
5616          * Interate over any nested datasets.
5617          */
5618         if (zfs_iter_filesystems(zhp, get_one_dataset, data) != 0) {
5619                 zfs_close(zhp);
5620                 return (1);
5621         }
5622
5623         /*
5624          * Skip any datasets whose type does not match.
5625          */
5626         if ((type & ZFS_TYPE_FILESYSTEM) == 0) {
5627                 zfs_close(zhp);
5628                 return (0);
5629         }
5630         libzfs_add_handle(cbp, zhp);
5631         assert(cbp->cb_used <= cbp->cb_alloc);
5632
5633         return (0);
5634 }
5635
5636 static void
5637 get_all_datasets(zfs_handle_t ***dslist, size_t *count, boolean_t verbose)
5638 {
5639         get_all_cb_t cb = { 0 };
5640         cb.cb_verbose = verbose;
5641         cb.cb_getone = get_one_dataset;
5642
5643         if (verbose)
5644                 set_progress_header(gettext("Reading ZFS config"));
5645         (void) zfs_iter_root(g_zfs, get_one_dataset, &cb);
5646
5647         *dslist = cb.cb_handles;
5648         *count = cb.cb_used;
5649
5650         if (verbose)
5651                 finish_progress(gettext("done."));
5652 }
5653
5654 /*
5655  * Generic callback for sharing or mounting filesystems.  Because the code is so
5656  * similar, we have a common function with an extra parameter to determine which
5657  * mode we are using.
5658  */
5659 #define OP_SHARE        0x1
5660 #define OP_MOUNT        0x2
5661
5662 /*
5663  * Share or mount a dataset.
5664  */
5665 static int
5666 share_mount_one(zfs_handle_t *zhp, int op, int flags, char *protocol,
5667     boolean_t explicit, const char *options)
5668 {
5669         char mountpoint[ZFS_MAXPROPLEN];
5670         char shareopts[ZFS_MAXPROPLEN];
5671         char smbshareopts[ZFS_MAXPROPLEN];
5672         const char *cmdname = op == OP_SHARE ? "share" : "mount";
5673         struct mnttab mnt;
5674         uint64_t zoned, canmount;
5675         boolean_t shared_nfs, shared_smb;
5676
5677         assert(zfs_get_type(zhp) & ZFS_TYPE_FILESYSTEM);
5678
5679         /*
5680          * Check to make sure we can mount/share this dataset.  If we
5681          * are in the global zone and the filesystem is exported to a
5682          * local zone, or if we are in a local zone and the
5683          * filesystem is not exported, then it is an error.
5684          */
5685         zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED);
5686
5687         if (zoned && getzoneid() == GLOBAL_ZONEID) {
5688                 if (!explicit)
5689                         return (0);
5690
5691                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5692                     "dataset is exported to a local zone\n"), cmdname,
5693                     zfs_get_name(zhp));
5694                 return (1);
5695
5696         } else if (!zoned && getzoneid() != GLOBAL_ZONEID) {
5697                 if (!explicit)
5698                         return (0);
5699
5700                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5701                     "permission denied\n"), cmdname,
5702                     zfs_get_name(zhp));
5703                 return (1);
5704         }
5705
5706         /*
5707          * Ignore any filesystems which don't apply to us. This
5708          * includes those with a legacy mountpoint, or those with
5709          * legacy share options.
5710          */
5711         verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
5712             sizeof (mountpoint), NULL, NULL, 0, B_FALSE) == 0);
5713         verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, shareopts,
5714             sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0);
5715         verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshareopts,
5716             sizeof (smbshareopts), NULL, NULL, 0, B_FALSE) == 0);
5717
5718         if (op == OP_SHARE && strcmp(shareopts, "off") == 0 &&
5719             strcmp(smbshareopts, "off") == 0) {
5720                 if (!explicit)
5721                         return (0);
5722
5723                 (void) fprintf(stderr, gettext("cannot share '%s': "
5724                     "legacy share\n"), zfs_get_name(zhp));
5725                 (void) fprintf(stderr, gettext("to "
5726                     "share this filesystem set "
5727                     "sharenfs property on\n"));
5728                 return (1);
5729         }
5730
5731         /*
5732          * We cannot share or mount legacy filesystems. If the
5733          * shareopts is non-legacy but the mountpoint is legacy, we
5734          * treat it as a legacy share.
5735          */
5736         if (strcmp(mountpoint, "legacy") == 0) {
5737                 if (!explicit)
5738                         return (0);
5739
5740                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5741                     "legacy mountpoint\n"), cmdname, zfs_get_name(zhp));
5742                 (void) fprintf(stderr, gettext("use %s(8) to "
5743                     "%s this filesystem\n"), cmdname, cmdname);
5744                 return (1);
5745         }
5746
5747         if (strcmp(mountpoint, "none") == 0) {
5748                 if (!explicit)
5749                         return (0);
5750
5751                 (void) fprintf(stderr, gettext("cannot %s '%s': no "
5752                     "mountpoint set\n"), cmdname, zfs_get_name(zhp));
5753                 return (1);
5754         }
5755
5756         /*
5757          * canmount     explicit        outcome
5758          * on           no              pass through
5759          * on           yes             pass through
5760          * off          no              return 0
5761          * off          yes             display error, return 1
5762          * noauto       no              return 0
5763          * noauto       yes             pass through
5764          */
5765         canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT);
5766         if (canmount == ZFS_CANMOUNT_OFF) {
5767                 if (!explicit)
5768                         return (0);
5769
5770                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5771                     "'canmount' property is set to 'off'\n"), cmdname,
5772                     zfs_get_name(zhp));
5773                 return (1);
5774         } else if (canmount == ZFS_CANMOUNT_NOAUTO && !explicit) {
5775                 return (0);
5776         }
5777
5778         /*
5779          * At this point, we have verified that the mountpoint and/or
5780          * shareopts are appropriate for auto management. If the
5781          * filesystem is already mounted or shared, return (failing
5782          * for explicit requests); otherwise mount or share the
5783          * filesystem.
5784          */
5785         switch (op) {
5786         case OP_SHARE:
5787
5788                 shared_nfs = zfs_is_shared_nfs(zhp, NULL);
5789                 shared_smb = zfs_is_shared_smb(zhp, NULL);
5790
5791                 if (shared_nfs && shared_smb ||
5792                     (shared_nfs && strcmp(shareopts, "on") == 0 &&
5793                     strcmp(smbshareopts, "off") == 0) ||
5794                     (shared_smb && strcmp(smbshareopts, "on") == 0 &&
5795                     strcmp(shareopts, "off") == 0)) {
5796                         if (!explicit)
5797                                 return (0);
5798
5799                         (void) fprintf(stderr, gettext("cannot share "
5800                             "'%s': filesystem already shared\n"),
5801                             zfs_get_name(zhp));
5802                         return (1);
5803                 }
5804
5805                 if (!zfs_is_mounted(zhp, NULL) &&
5806                     zfs_mount(zhp, NULL, 0) != 0)
5807                         return (1);
5808
5809                 if (protocol == NULL) {
5810                         if (zfs_shareall(zhp) != 0)
5811                                 return (1);
5812                 } else if (strcmp(protocol, "nfs") == 0) {
5813                         if (zfs_share_nfs(zhp))
5814                                 return (1);
5815                 } else if (strcmp(protocol, "smb") == 0) {
5816                         if (zfs_share_smb(zhp))
5817                                 return (1);
5818                 } else {
5819                         (void) fprintf(stderr, gettext("cannot share "
5820                             "'%s': invalid share type '%s' "
5821                             "specified\n"),
5822                             zfs_get_name(zhp), protocol);
5823                         return (1);
5824                 }
5825
5826                 break;
5827
5828         case OP_MOUNT:
5829                 if (options == NULL)
5830                         mnt.mnt_mntopts = "";
5831                 else
5832                         mnt.mnt_mntopts = (char *)options;
5833
5834                 if (!hasmntopt(&mnt, MNTOPT_REMOUNT) &&
5835                     zfs_is_mounted(zhp, NULL)) {
5836                         if (!explicit)
5837                                 return (0);
5838
5839                         (void) fprintf(stderr, gettext("cannot mount "
5840                             "'%s': filesystem already mounted\n"),
5841                             zfs_get_name(zhp));
5842                         return (1);
5843                 }
5844
5845                 if (zfs_mount(zhp, options, flags) != 0)
5846                         return (1);
5847                 break;
5848         }
5849
5850         return (0);
5851 }
5852
5853 /*
5854  * Reports progress in the form "(current/total)".  Not thread-safe.
5855  */
5856 static void
5857 report_mount_progress(int current, int total)
5858 {
5859         static time_t last_progress_time = 0;
5860         time_t now = time(NULL);
5861         char info[32];
5862
5863         /* report 1..n instead of 0..n-1 */
5864         ++current;
5865
5866         /* display header if we're here for the first time */
5867         if (current == 1) {
5868                 set_progress_header(gettext("Mounting ZFS filesystems"));
5869         } else if (current != total && last_progress_time + MOUNT_TIME >= now) {
5870                 /* too soon to report again */
5871                 return;
5872         }
5873
5874         last_progress_time = now;
5875
5876         (void) sprintf(info, "(%d/%d)", current, total);
5877
5878         if (current == total)
5879                 finish_progress(info);
5880         else
5881                 update_progress(info);
5882 }
5883
5884 static void
5885 append_options(char *mntopts, char *newopts)
5886 {
5887         int len = strlen(mntopts);
5888
5889         /* original length plus new string to append plus 1 for the comma */
5890         if (len + 1 + strlen(newopts) >= MNT_LINE_MAX) {
5891                 (void) fprintf(stderr, gettext("the opts argument for "
5892                     "'%c' option is too long (more than %d chars)\n"),
5893                     "-o", MNT_LINE_MAX);
5894                 usage(B_FALSE);
5895         }
5896
5897         if (*mntopts)
5898                 mntopts[len++] = ',';
5899
5900         (void) strcpy(&mntopts[len], newopts);
5901 }
5902
5903 static int
5904 share_mount(int op, int argc, char **argv)
5905 {
5906         int do_all = 0;
5907         boolean_t verbose = B_FALSE;
5908         int c, ret = 0;
5909         char *options = NULL;
5910         int flags = 0;
5911
5912         /* check options */
5913         while ((c = getopt(argc, argv, op == OP_MOUNT ? ":avo:O" : "a"))
5914             != -1) {
5915                 switch (c) {
5916                 case 'a':
5917                         do_all = 1;
5918                         break;
5919                 case 'v':
5920                         verbose = B_TRUE;
5921                         break;
5922                 case 'o':
5923                         if (*optarg == '\0') {
5924                                 (void) fprintf(stderr, gettext("empty mount "
5925                                     "options (-o) specified\n"));
5926                                 usage(B_FALSE);
5927                         }
5928
5929                         if (options == NULL)
5930                                 options = safe_malloc(MNT_LINE_MAX + 1);
5931
5932                         /* option validation is done later */
5933                         append_options(options, optarg);
5934                         break;
5935
5936                 case 'O':
5937                         warnx("no overlay mounts support on FreeBSD, ignoring");
5938                         break;
5939                 case ':':
5940                         (void) fprintf(stderr, gettext("missing argument for "
5941                             "'%c' option\n"), optopt);
5942                         usage(B_FALSE);
5943                         break;
5944                 case '?':
5945                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5946                             optopt);
5947                         usage(B_FALSE);
5948                 }
5949         }
5950
5951         argc -= optind;
5952         argv += optind;
5953
5954         /* check number of arguments */
5955         if (do_all) {
5956                 zfs_handle_t **dslist = NULL;
5957                 size_t i, count = 0;
5958                 char *protocol = NULL;
5959
5960                 if (op == OP_SHARE && argc > 0) {
5961                         if (strcmp(argv[0], "nfs") != 0 &&
5962                             strcmp(argv[0], "smb") != 0) {
5963                                 (void) fprintf(stderr, gettext("share type "
5964                                     "must be 'nfs' or 'smb'\n"));
5965                                 usage(B_FALSE);
5966                         }
5967                         protocol = argv[0];
5968                         argc--;
5969                         argv++;
5970                 }
5971
5972                 if (argc != 0) {
5973                         (void) fprintf(stderr, gettext("too many arguments\n"));
5974                         usage(B_FALSE);
5975                 }
5976
5977                 start_progress_timer();
5978                 get_all_datasets(&dslist, &count, verbose);
5979
5980                 if (count == 0)
5981                         return (0);
5982
5983                 qsort(dslist, count, sizeof (void *), libzfs_dataset_cmp);
5984
5985                 for (i = 0; i < count; i++) {
5986                         if (verbose)
5987                                 report_mount_progress(i, count);
5988
5989                         if (share_mount_one(dslist[i], op, flags, protocol,
5990                             B_FALSE, options) != 0)
5991                                 ret = 1;
5992                         zfs_close(dslist[i]);
5993                 }
5994
5995                 free(dslist);
5996         } else if (argc == 0) {
5997                 struct mnttab entry;
5998
5999                 if ((op == OP_SHARE) || (options != NULL)) {
6000                         (void) fprintf(stderr, gettext("missing filesystem "
6001                             "argument (specify -a for all)\n"));
6002                         usage(B_FALSE);
6003                 }
6004
6005                 /*
6006                  * When mount is given no arguments, go through /etc/mnttab and
6007                  * display any active ZFS mounts.  We hide any snapshots, since
6008                  * they are controlled automatically.
6009                  */
6010                 rewind(mnttab_file);
6011                 while (getmntent(mnttab_file, &entry) == 0) {
6012                         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0 ||
6013                             strchr(entry.mnt_special, '@') != NULL)
6014                                 continue;
6015
6016                         (void) printf("%-30s  %s\n", entry.mnt_special,
6017                             entry.mnt_mountp);
6018                 }
6019
6020         } else {
6021                 zfs_handle_t *zhp;
6022
6023                 if (argc > 1) {
6024                         (void) fprintf(stderr,
6025                             gettext("too many arguments\n"));
6026                         usage(B_FALSE);
6027                 }
6028
6029                 if ((zhp = zfs_open(g_zfs, argv[0],
6030                     ZFS_TYPE_FILESYSTEM)) == NULL) {
6031                         ret = 1;
6032                 } else {
6033                         ret = share_mount_one(zhp, op, flags, NULL, B_TRUE,
6034                             options);
6035                         zfs_close(zhp);
6036                 }
6037         }
6038
6039         return (ret);
6040 }
6041
6042 /*
6043  * zfs mount -a [nfs]
6044  * zfs mount filesystem
6045  *
6046  * Mount all filesystems, or mount the given filesystem.
6047  */
6048 static int
6049 zfs_do_mount(int argc, char **argv)
6050 {
6051         return (share_mount(OP_MOUNT, argc, argv));
6052 }
6053
6054 /*
6055  * zfs share -a [nfs | smb]
6056  * zfs share filesystem
6057  *
6058  * Share all filesystems, or share the given filesystem.
6059  */
6060 static int
6061 zfs_do_share(int argc, char **argv)
6062 {
6063         return (share_mount(OP_SHARE, argc, argv));
6064 }
6065
6066 typedef struct unshare_unmount_node {
6067         zfs_handle_t    *un_zhp;
6068         char            *un_mountp;
6069         uu_avl_node_t   un_avlnode;
6070 } unshare_unmount_node_t;
6071
6072 /* ARGSUSED */
6073 static int
6074 unshare_unmount_compare(const void *larg, const void *rarg, void *unused)
6075 {
6076         const unshare_unmount_node_t *l = larg;
6077         const unshare_unmount_node_t *r = rarg;
6078
6079         return (strcmp(l->un_mountp, r->un_mountp));
6080 }
6081
6082 /*
6083  * Convenience routine used by zfs_do_umount() and manual_unmount().  Given an
6084  * absolute path, find the entry /etc/mnttab, verify that its a ZFS filesystem,
6085  * and unmount it appropriately.
6086  */
6087 static int
6088 unshare_unmount_path(int op, char *path, int flags, boolean_t is_manual)
6089 {
6090         zfs_handle_t *zhp;
6091         int ret = 0;
6092         struct stat64 statbuf;
6093         struct extmnttab entry;
6094         const char *cmdname = (op == OP_SHARE) ? "unshare" : "unmount";
6095         ino_t path_inode;
6096
6097         /*
6098          * Search for the path in /etc/mnttab.  Rather than looking for the
6099          * specific path, which can be fooled by non-standard paths (i.e. ".."
6100          * or "//"), we stat() the path and search for the corresponding
6101          * (major,minor) device pair.
6102          */
6103         if (stat64(path, &statbuf) != 0) {
6104                 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
6105                     cmdname, path, strerror(errno));
6106                 return (1);
6107         }
6108         path_inode = statbuf.st_ino;
6109
6110         /*
6111          * Search for the given (major,minor) pair in the mount table.
6112          */
6113 #ifdef sun
6114         rewind(mnttab_file);
6115         while ((ret = getextmntent(mnttab_file, &entry, 0)) == 0) {
6116                 if (entry.mnt_major == major(statbuf.st_dev) &&
6117                     entry.mnt_minor == minor(statbuf.st_dev))
6118                         break;
6119         }
6120 #else
6121         {
6122                 struct statfs sfs;
6123
6124                 if (statfs(path, &sfs) != 0) {
6125                         (void) fprintf(stderr, "%s: %s\n", path,
6126                             strerror(errno));
6127                         ret = -1;
6128                 }
6129                 statfs2mnttab(&sfs, &entry);
6130         }
6131 #endif
6132         if (ret != 0) {
6133                 if (op == OP_SHARE) {
6134                         (void) fprintf(stderr, gettext("cannot %s '%s': not "
6135                             "currently mounted\n"), cmdname, path);
6136                         return (1);
6137                 }
6138                 (void) fprintf(stderr, gettext("warning: %s not in mnttab\n"),
6139                     path);
6140                 if ((ret = umount2(path, flags)) != 0)
6141                         (void) fprintf(stderr, gettext("%s: %s\n"), path,
6142                             strerror(errno));
6143                 return (ret != 0);
6144         }
6145
6146         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) {
6147                 (void) fprintf(stderr, gettext("cannot %s '%s': not a ZFS "
6148                     "filesystem\n"), cmdname, path);
6149                 return (1);
6150         }
6151
6152         if ((zhp = zfs_open(g_zfs, entry.mnt_special,
6153             ZFS_TYPE_FILESYSTEM)) == NULL)
6154                 return (1);
6155
6156         ret = 1;
6157         if (stat64(entry.mnt_mountp, &statbuf) != 0) {
6158                 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
6159                     cmdname, path, strerror(errno));
6160                 goto out;
6161         } else if (statbuf.st_ino != path_inode) {
6162                 (void) fprintf(stderr, gettext("cannot "
6163                     "%s '%s': not a mountpoint\n"), cmdname, path);
6164                 goto out;
6165         }
6166
6167         if (op == OP_SHARE) {
6168                 char nfs_mnt_prop[ZFS_MAXPROPLEN];
6169                 char smbshare_prop[ZFS_MAXPROPLEN];
6170
6171                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, nfs_mnt_prop,
6172                     sizeof (nfs_mnt_prop), NULL, NULL, 0, B_FALSE) == 0);
6173                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshare_prop,
6174                     sizeof (smbshare_prop), NULL, NULL, 0, B_FALSE) == 0);
6175
6176                 if (strcmp(nfs_mnt_prop, "off") == 0 &&
6177                     strcmp(smbshare_prop, "off") == 0) {
6178                         (void) fprintf(stderr, gettext("cannot unshare "
6179                             "'%s': legacy share\n"), path);
6180 #ifdef illumos
6181                         (void) fprintf(stderr, gettext("use "
6182                             "unshare(1M) to unshare this filesystem\n"));
6183 #endif
6184                 } else if (!zfs_is_shared(zhp)) {
6185                         (void) fprintf(stderr, gettext("cannot unshare '%s': "
6186                             "not currently shared\n"), path);
6187                 } else {
6188                         ret = zfs_unshareall_bypath(zhp, path);
6189                 }
6190         } else {
6191                 char mtpt_prop[ZFS_MAXPROPLEN];
6192
6193                 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mtpt_prop,
6194                     sizeof (mtpt_prop), NULL, NULL, 0, B_FALSE) == 0);
6195
6196                 if (is_manual) {
6197                         ret = zfs_unmount(zhp, NULL, flags);
6198                 } else if (strcmp(mtpt_prop, "legacy") == 0) {
6199                         (void) fprintf(stderr, gettext("cannot unmount "
6200                             "'%s': legacy mountpoint\n"),
6201                             zfs_get_name(zhp));
6202                         (void) fprintf(stderr, gettext("use umount(8) "
6203                             "to unmount this filesystem\n"));
6204                 } else {
6205                         ret = zfs_unmountall(zhp, flags);
6206                 }
6207         }
6208
6209 out:
6210         zfs_close(zhp);
6211
6212         return (ret != 0);
6213 }
6214
6215 /*
6216  * Generic callback for unsharing or unmounting a filesystem.
6217  */
6218 static int
6219 unshare_unmount(int op, int argc, char **argv)
6220 {
6221         int do_all = 0;
6222         int flags = 0;
6223         int ret = 0;
6224         int c;
6225         zfs_handle_t *zhp;
6226         char nfs_mnt_prop[ZFS_MAXPROPLEN];
6227         char sharesmb[ZFS_MAXPROPLEN];
6228
6229         /* check options */
6230         while ((c = getopt(argc, argv, op == OP_SHARE ? "a" : "af")) != -1) {
6231                 switch (c) {
6232                 case 'a':
6233                         do_all = 1;
6234                         break;
6235                 case 'f':
6236                         flags = MS_FORCE;
6237                         break;
6238                 case '?':
6239                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6240                             optopt);
6241                         usage(B_FALSE);
6242                 }
6243         }
6244
6245         argc -= optind;
6246         argv += optind;
6247
6248         if (do_all) {
6249                 /*
6250                  * We could make use of zfs_for_each() to walk all datasets in
6251                  * the system, but this would be very inefficient, especially
6252                  * since we would have to linearly search /etc/mnttab for each
6253                  * one.  Instead, do one pass through /etc/mnttab looking for
6254                  * zfs entries and call zfs_unmount() for each one.
6255                  *
6256                  * Things get a little tricky if the administrator has created
6257                  * mountpoints beneath other ZFS filesystems.  In this case, we
6258                  * have to unmount the deepest filesystems first.  To accomplish
6259                  * this, we place all the mountpoints in an AVL tree sorted by
6260                  * the special type (dataset name), and walk the result in
6261                  * reverse to make sure to get any snapshots first.
6262                  */
6263                 struct mnttab entry;
6264                 uu_avl_pool_t *pool;
6265                 uu_avl_t *tree;
6266                 unshare_unmount_node_t *node;
6267                 uu_avl_index_t idx;
6268                 uu_avl_walk_t *walk;
6269
6270                 if (argc != 0) {
6271                         (void) fprintf(stderr, gettext("too many arguments\n"));
6272                         usage(B_FALSE);
6273                 }
6274
6275                 if (((pool = uu_avl_pool_create("unmount_pool",
6276                     sizeof (unshare_unmount_node_t),
6277                     offsetof(unshare_unmount_node_t, un_avlnode),
6278                     unshare_unmount_compare, UU_DEFAULT)) == NULL) ||
6279                     ((tree = uu_avl_create(pool, NULL, UU_DEFAULT)) == NULL))
6280                         nomem();
6281
6282                 rewind(mnttab_file);
6283                 while (getmntent(mnttab_file, &entry) == 0) {
6284
6285                         /* ignore non-ZFS entries */
6286                         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0)
6287                                 continue;
6288
6289                         /* ignore snapshots */
6290                         if (strchr(entry.mnt_special, '@') != NULL)
6291                                 continue;
6292
6293                         if ((zhp = zfs_open(g_zfs, entry.mnt_special,
6294                             ZFS_TYPE_FILESYSTEM)) == NULL) {
6295                                 ret = 1;
6296                                 continue;
6297                         }
6298
6299                         switch (op) {
6300                         case OP_SHARE:
6301                                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
6302                                     nfs_mnt_prop,
6303                                     sizeof (nfs_mnt_prop),
6304                                     NULL, NULL, 0, B_FALSE) == 0);
6305                                 if (strcmp(nfs_mnt_prop, "off") != 0)
6306                                         break;
6307                                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
6308                                     nfs_mnt_prop,
6309                                     sizeof (nfs_mnt_prop),
6310                                     NULL, NULL, 0, B_FALSE) == 0);
6311                                 if (strcmp(nfs_mnt_prop, "off") == 0)
6312                                         continue;
6313                                 break;
6314                         case OP_MOUNT:
6315                                 /* Ignore legacy mounts */
6316                                 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT,
6317                                     nfs_mnt_prop,
6318                                     sizeof (nfs_mnt_prop),
6319                                     NULL, NULL, 0, B_FALSE) == 0);
6320                                 if (strcmp(nfs_mnt_prop, "legacy") == 0)
6321                                         continue;
6322                                 /* Ignore canmount=noauto mounts */
6323                                 if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) ==
6324                                     ZFS_CANMOUNT_NOAUTO)
6325                                         continue;
6326                         default:
6327                                 break;
6328                         }
6329
6330                         node = safe_malloc(sizeof (unshare_unmount_node_t));
6331                         node->un_zhp = zhp;
6332                         node->un_mountp = safe_strdup(entry.mnt_mountp);
6333
6334                         uu_avl_node_init(node, &node->un_avlnode, pool);
6335
6336                         if (uu_avl_find(tree, node, NULL, &idx) == NULL) {
6337                                 uu_avl_insert(tree, node, idx);
6338                         } else {
6339                                 zfs_close(node->un_zhp);
6340                                 free(node->un_mountp);
6341                                 free(node);
6342                         }
6343                 }
6344
6345                 /*
6346                  * Walk the AVL tree in reverse, unmounting each filesystem and
6347                  * removing it from the AVL tree in the process.
6348                  */
6349                 if ((walk = uu_avl_walk_start(tree,
6350                     UU_WALK_REVERSE | UU_WALK_ROBUST)) == NULL)
6351                         nomem();
6352
6353                 while ((node = uu_avl_walk_next(walk)) != NULL) {
6354                         uu_avl_remove(tree, node);
6355
6356                         switch (op) {
6357                         case OP_SHARE:
6358                                 if (zfs_unshareall_bypath(node->un_zhp,
6359                                     node->un_mountp) != 0)
6360                                         ret = 1;
6361                                 break;
6362
6363                         case OP_MOUNT:
6364                                 if (zfs_unmount(node->un_zhp,
6365                                     node->un_mountp, flags) != 0)
6366                                         ret = 1;
6367                                 break;
6368                         }
6369
6370                         zfs_close(node->un_zhp);
6371                         free(node->un_mountp);
6372                         free(node);
6373                 }
6374
6375                 uu_avl_walk_end(walk);
6376                 uu_avl_destroy(tree);
6377                 uu_avl_pool_destroy(pool);
6378
6379         } else {
6380                 if (argc != 1) {
6381                         if (argc == 0)
6382                                 (void) fprintf(stderr,
6383                                     gettext("missing filesystem argument\n"));
6384                         else
6385                                 (void) fprintf(stderr,
6386                                     gettext("too many arguments\n"));
6387                         usage(B_FALSE);
6388                 }
6389
6390                 /*
6391                  * We have an argument, but it may be a full path or a ZFS
6392                  * filesystem.  Pass full paths off to unmount_path() (shared by
6393                  * manual_unmount), otherwise open the filesystem and pass to
6394                  * zfs_unmount().
6395                  */
6396                 if (argv[0][0] == '/')
6397                         return (unshare_unmount_path(op, argv[0],
6398                             flags, B_FALSE));
6399
6400                 if ((zhp = zfs_open(g_zfs, argv[0],
6401                     ZFS_TYPE_FILESYSTEM)) == NULL)
6402                         return (1);
6403
6404                 verify(zfs_prop_get(zhp, op == OP_SHARE ?
6405                     ZFS_PROP_SHARENFS : ZFS_PROP_MOUNTPOINT,
6406                     nfs_mnt_prop, sizeof (nfs_mnt_prop), NULL,
6407                     NULL, 0, B_FALSE) == 0);
6408
6409                 switch (op) {
6410                 case OP_SHARE:
6411                         verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
6412                             nfs_mnt_prop,
6413                             sizeof (nfs_mnt_prop),
6414                             NULL, NULL, 0, B_FALSE) == 0);
6415                         verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
6416                             sharesmb, sizeof (sharesmb), NULL, NULL,
6417                             0, B_FALSE) == 0);
6418
6419                         if (strcmp(nfs_mnt_prop, "off") == 0 &&
6420                             strcmp(sharesmb, "off") == 0) {
6421                                 (void) fprintf(stderr, gettext("cannot "
6422                                     "unshare '%s': legacy share\n"),
6423                                     zfs_get_name(zhp));
6424 #ifdef illumos
6425                                 (void) fprintf(stderr, gettext("use "
6426                                     "unshare(1M) to unshare this "
6427                                     "filesystem\n"));
6428 #endif
6429                                 ret = 1;
6430                         } else if (!zfs_is_shared(zhp)) {
6431                                 (void) fprintf(stderr, gettext("cannot "
6432                                     "unshare '%s': not currently "
6433                                     "shared\n"), zfs_get_name(zhp));
6434                                 ret = 1;
6435                         } else if (zfs_unshareall(zhp) != 0) {
6436                                 ret = 1;
6437                         }
6438                         break;
6439
6440                 case OP_MOUNT:
6441                         if (strcmp(nfs_mnt_prop, "legacy") == 0) {
6442                                 (void) fprintf(stderr, gettext("cannot "
6443                                     "unmount '%s': legacy "
6444                                     "mountpoint\n"), zfs_get_name(zhp));
6445                                 (void) fprintf(stderr, gettext("use "
6446                                     "umount(8) to unmount this "
6447                                     "filesystem\n"));
6448                                 ret = 1;
6449                         } else if (!zfs_is_mounted(zhp, NULL)) {
6450                                 (void) fprintf(stderr, gettext("cannot "
6451                                     "unmount '%s': not currently "
6452                                     "mounted\n"),
6453                                     zfs_get_name(zhp));
6454                                 ret = 1;
6455                         } else if (zfs_unmountall(zhp, flags) != 0) {
6456                                 ret = 1;
6457                         }
6458                         break;
6459                 }
6460
6461                 zfs_close(zhp);
6462         }
6463
6464         return (ret);
6465 }
6466
6467 /*
6468  * zfs unmount -a
6469  * zfs unmount filesystem
6470  *
6471  * Unmount all filesystems, or a specific ZFS filesystem.
6472  */
6473 static int
6474 zfs_do_unmount(int argc, char **argv)
6475 {
6476         return (unshare_unmount(OP_MOUNT, argc, argv));
6477 }
6478
6479 /*
6480  * zfs unshare -a
6481  * zfs unshare filesystem
6482  *
6483  * Unshare all filesystems, or a specific ZFS filesystem.
6484  */
6485 static int
6486 zfs_do_unshare(int argc, char **argv)
6487 {
6488         return (unshare_unmount(OP_SHARE, argc, argv));
6489 }
6490
6491 /*
6492  * Attach/detach the given dataset to/from the given jail
6493  */
6494 /* ARGSUSED */
6495 static int
6496 do_jail(int argc, char **argv, int attach)
6497 {
6498         zfs_handle_t *zhp;
6499         int jailid, ret;
6500
6501         /* check number of arguments */
6502         if (argc < 3) {
6503                 (void) fprintf(stderr, gettext("missing argument(s)\n"));
6504                 usage(B_FALSE);
6505         }
6506         if (argc > 3) {
6507                 (void) fprintf(stderr, gettext("too many arguments\n"));
6508                 usage(B_FALSE);
6509         }
6510
6511         jailid = jail_getid(argv[1]);
6512         if (jailid < 0) {
6513                 (void) fprintf(stderr, gettext("invalid jail id or name\n"));
6514                 usage(B_FALSE);
6515         }
6516
6517         zhp = zfs_open(g_zfs, argv[2], ZFS_TYPE_FILESYSTEM);
6518         if (zhp == NULL)
6519                 return (1);
6520
6521         ret = (zfs_jail(zhp, jailid, attach) != 0);
6522
6523         zfs_close(zhp);
6524         return (ret);
6525 }
6526
6527 /*
6528  * zfs jail jailid filesystem
6529  *
6530  * Attach the given dataset to the given jail
6531  */
6532 /* ARGSUSED */
6533 static int
6534 zfs_do_jail(int argc, char **argv)
6535 {
6536
6537         return (do_jail(argc, argv, 1));
6538 }
6539
6540 /*
6541  * zfs unjail jailid filesystem
6542  *
6543  * Detach the given dataset from the given jail
6544  */
6545 /* ARGSUSED */
6546 static int
6547 zfs_do_unjail(int argc, char **argv)
6548 {
6549
6550         return (do_jail(argc, argv, 0));
6551 }
6552
6553 /*
6554  * Called when invoked as /etc/fs/zfs/mount.  Do the mount if the mountpoint is
6555  * 'legacy'.  Otherwise, complain that use should be using 'zfs mount'.
6556  */
6557 static int
6558 manual_mount(int argc, char **argv)
6559 {
6560         zfs_handle_t *zhp;
6561         char mountpoint[ZFS_MAXPROPLEN];
6562         char mntopts[MNT_LINE_MAX] = { '\0' };
6563         int ret = 0;
6564         int c;
6565         int flags = 0;
6566         char *dataset, *path;
6567
6568         /* check options */
6569         while ((c = getopt(argc, argv, ":mo:O")) != -1) {
6570                 switch (c) {
6571                 case 'o':
6572                         (void) strlcpy(mntopts, optarg, sizeof (mntopts));
6573                         break;
6574                 case 'O':
6575                         flags |= MS_OVERLAY;
6576                         break;
6577                 case 'm':
6578                         flags |= MS_NOMNTTAB;
6579                         break;
6580                 case ':':
6581                         (void) fprintf(stderr, gettext("missing argument for "
6582                             "'%c' option\n"), optopt);
6583                         usage(B_FALSE);
6584                         break;
6585                 case '?':
6586                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6587                             optopt);
6588                         (void) fprintf(stderr, gettext("usage: mount [-o opts] "
6589                             "<path>\n"));
6590                         return (2);
6591                 }
6592         }
6593
6594         argc -= optind;
6595         argv += optind;
6596
6597         /* check that we only have two arguments */
6598         if (argc != 2) {
6599                 if (argc == 0)
6600                         (void) fprintf(stderr, gettext("missing dataset "
6601                             "argument\n"));
6602                 else if (argc == 1)
6603                         (void) fprintf(stderr,
6604                             gettext("missing mountpoint argument\n"));
6605                 else
6606                         (void) fprintf(stderr, gettext("too many arguments\n"));
6607                 (void) fprintf(stderr, "usage: mount <dataset> <mountpoint>\n");
6608                 return (2);
6609         }
6610
6611         dataset = argv[0];
6612         path = argv[1];
6613
6614         /* try to open the dataset */
6615         if ((zhp = zfs_open(g_zfs, dataset, ZFS_TYPE_FILESYSTEM)) == NULL)
6616                 return (1);
6617
6618         (void) zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
6619             sizeof (mountpoint), NULL, NULL, 0, B_FALSE);
6620
6621         /* check for legacy mountpoint and complain appropriately */
6622         ret = 0;
6623         if (strcmp(mountpoint, ZFS_MOUNTPOINT_LEGACY) == 0) {
6624                 if (zmount(dataset, path, flags, MNTTYPE_ZFS,
6625                     NULL, 0, mntopts, sizeof (mntopts)) != 0) {
6626                         (void) fprintf(stderr, gettext("mount failed: %s\n"),
6627                             strerror(errno));
6628                         ret = 1;
6629                 }
6630         } else {
6631                 (void) fprintf(stderr, gettext("filesystem '%s' cannot be "
6632                     "mounted using 'mount -t zfs'\n"), dataset);
6633                 (void) fprintf(stderr, gettext("Use 'zfs set mountpoint=%s' "
6634                     "instead.\n"), path);
6635                 (void) fprintf(stderr, gettext("If you must use 'mount -t zfs' "
6636                     "or /etc/fstab, use 'zfs set mountpoint=legacy'.\n"));
6637                 (void) fprintf(stderr, gettext("See zfs(8) for more "
6638                     "information.\n"));
6639                 ret = 1;
6640         }
6641
6642         return (ret);
6643 }
6644
6645 /*
6646  * Called when invoked as /etc/fs/zfs/umount.  Unlike a manual mount, we allow
6647  * unmounts of non-legacy filesystems, as this is the dominant administrative
6648  * interface.
6649  */
6650 static int
6651 manual_unmount(int argc, char **argv)
6652 {
6653         int flags = 0;
6654         int c;
6655
6656         /* check options */
6657         while ((c = getopt(argc, argv, "f")) != -1) {
6658                 switch (c) {
6659                 case 'f':
6660                         flags = MS_FORCE;
6661                         break;
6662                 case '?':
6663                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6664                             optopt);
6665                         (void) fprintf(stderr, gettext("usage: unmount [-f] "
6666                             "<path>\n"));
6667                         return (2);
6668                 }
6669         }
6670
6671         argc -= optind;
6672         argv += optind;
6673
6674         /* check arguments */
6675         if (argc != 1) {
6676                 if (argc == 0)
6677                         (void) fprintf(stderr, gettext("missing path "
6678                             "argument\n"));
6679                 else
6680                         (void) fprintf(stderr, gettext("too many arguments\n"));
6681                 (void) fprintf(stderr, gettext("usage: unmount [-f] <path>\n"));
6682                 return (2);
6683         }
6684
6685         return (unshare_unmount_path(OP_MOUNT, argv[0], flags, B_TRUE));
6686 }
6687
6688 static int
6689 find_command_idx(char *command, int *idx)
6690 {
6691         int i;
6692
6693         for (i = 0; i < NCOMMAND; i++) {
6694                 if (command_table[i].name == NULL)
6695                         continue;
6696
6697                 if (strcmp(command, command_table[i].name) == 0) {
6698                         *idx = i;
6699                         return (0);
6700                 }
6701         }
6702         return (1);
6703 }
6704
6705 static int
6706 zfs_do_diff(int argc, char **argv)
6707 {
6708         zfs_handle_t *zhp;
6709         int flags = 0;
6710         char *tosnap = NULL;
6711         char *fromsnap = NULL;
6712         char *atp, *copy;
6713         int err = 0;
6714         int c;
6715
6716         while ((c = getopt(argc, argv, "FHt")) != -1) {
6717                 switch (c) {
6718                 case 'F':
6719                         flags |= ZFS_DIFF_CLASSIFY;
6720                         break;
6721                 case 'H':
6722                         flags |= ZFS_DIFF_PARSEABLE;
6723                         break;
6724                 case 't':
6725                         flags |= ZFS_DIFF_TIMESTAMP;
6726                         break;
6727                 default:
6728                         (void) fprintf(stderr,
6729                             gettext("invalid option '%c'\n"), optopt);
6730                         usage(B_FALSE);
6731                 }
6732         }
6733
6734         argc -= optind;
6735         argv += optind;
6736
6737         if (argc < 1) {
6738                 (void) fprintf(stderr,
6739                 gettext("must provide at least one snapshot name\n"));
6740                 usage(B_FALSE);
6741         }
6742
6743         if (argc > 2) {
6744                 (void) fprintf(stderr, gettext("too many arguments\n"));
6745                 usage(B_FALSE);
6746         }
6747
6748         fromsnap = argv[0];
6749         tosnap = (argc == 2) ? argv[1] : NULL;
6750
6751         copy = NULL;
6752         if (*fromsnap != '@')
6753                 copy = strdup(fromsnap);
6754         else if (tosnap)
6755                 copy = strdup(tosnap);
6756         if (copy == NULL)
6757                 usage(B_FALSE);
6758
6759         if (atp = strchr(copy, '@'))
6760                 *atp = '\0';
6761
6762         if ((zhp = zfs_open(g_zfs, copy, ZFS_TYPE_FILESYSTEM)) == NULL)
6763                 return (1);
6764
6765         free(copy);
6766
6767         /*
6768          * Ignore SIGPIPE so that the library can give us
6769          * information on any failure
6770          */
6771         (void) sigignore(SIGPIPE);
6772
6773         err = zfs_show_diffs(zhp, STDOUT_FILENO, fromsnap, tosnap, flags);
6774
6775         zfs_close(zhp);
6776
6777         return (err != 0);
6778 }
6779
6780 /*
6781  * zfs bookmark <fs@snap> <fs#bmark>
6782  *
6783  * Creates a bookmark with the given name from the given snapshot.
6784  */
6785 static int
6786 zfs_do_bookmark(int argc, char **argv)
6787 {
6788         char snapname[ZFS_MAXNAMELEN];
6789         zfs_handle_t *zhp;
6790         nvlist_t *nvl;
6791         int ret = 0;
6792         int c;
6793
6794         /* check options */
6795         while ((c = getopt(argc, argv, "")) != -1) {
6796                 switch (c) {
6797                 case '?':
6798                         (void) fprintf(stderr,
6799                             gettext("invalid option '%c'\n"), optopt);
6800                         goto usage;
6801                 }
6802         }
6803
6804         argc -= optind;
6805         argv += optind;
6806
6807         /* check number of arguments */
6808         if (argc < 1) {
6809                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
6810                 goto usage;
6811         }
6812         if (argc < 2) {
6813                 (void) fprintf(stderr, gettext("missing bookmark argument\n"));
6814                 goto usage;
6815         }
6816
6817         if (strchr(argv[1], '#') == NULL) {
6818                 (void) fprintf(stderr,
6819                     gettext("invalid bookmark name '%s' -- "
6820                     "must contain a '#'\n"), argv[1]);
6821                 goto usage;
6822         }
6823
6824         if (argv[0][0] == '@') {
6825                 /*
6826                  * Snapshot name begins with @.
6827                  * Default to same fs as bookmark.
6828                  */
6829                 (void) strncpy(snapname, argv[1], sizeof (snapname));
6830                 *strchr(snapname, '#') = '\0';
6831                 (void) strlcat(snapname, argv[0], sizeof (snapname));
6832         } else {
6833                 (void) strncpy(snapname, argv[0], sizeof (snapname));
6834         }
6835         zhp = zfs_open(g_zfs, snapname, ZFS_TYPE_SNAPSHOT);
6836         if (zhp == NULL)
6837                 goto usage;
6838         zfs_close(zhp);
6839
6840
6841         nvl = fnvlist_alloc();
6842         fnvlist_add_string(nvl, argv[1], snapname);
6843         ret = lzc_bookmark(nvl, NULL);
6844         fnvlist_free(nvl);
6845
6846         if (ret != 0) {
6847                 const char *err_msg;
6848                 char errbuf[1024];
6849
6850                 (void) snprintf(errbuf, sizeof (errbuf),
6851                     dgettext(TEXT_DOMAIN,
6852                     "cannot create bookmark '%s'"), argv[1]);
6853
6854                 switch (ret) {
6855                 case EXDEV:
6856                         err_msg = "bookmark is in a different pool";
6857                         break;
6858                 case EEXIST:
6859                         err_msg = "bookmark exists";
6860                         break;
6861                 case EINVAL:
6862                         err_msg = "invalid argument";
6863                         break;
6864                 case ENOTSUP:
6865                         err_msg = "bookmark feature not enabled";
6866                         break;
6867                 case ENOSPC:
6868                         err_msg = "out of space";
6869                         break;
6870                 default:
6871                         err_msg = "unknown error";
6872                         break;
6873                 }
6874                 (void) fprintf(stderr, "%s: %s\n", errbuf,
6875                     dgettext(TEXT_DOMAIN, err_msg));
6876         }
6877
6878         return (ret != 0);
6879
6880 usage:
6881         usage(B_FALSE);
6882         return (-1);
6883 }
6884
6885 int
6886 main(int argc, char **argv)
6887 {
6888         int ret = 0;
6889         int i;
6890         char *progname;
6891         char *cmdname;
6892
6893         (void) setlocale(LC_ALL, "");
6894         (void) textdomain(TEXT_DOMAIN);
6895
6896         opterr = 0;
6897
6898         if ((g_zfs = libzfs_init()) == NULL) {
6899                 (void) fprintf(stderr, gettext("internal error: failed to "
6900                     "initialize ZFS library\n"));
6901                 return (1);
6902         }
6903
6904         zfs_save_arguments(argc, argv, history_str, sizeof (history_str));
6905
6906         libzfs_print_on_error(g_zfs, B_TRUE);
6907
6908         if ((mnttab_file = fopen(MNTTAB, "r")) == NULL) {
6909                 (void) fprintf(stderr, gettext("internal error: unable to "
6910                     "open %s\n"), MNTTAB);
6911                 return (1);
6912         }
6913
6914         /*
6915          * This command also doubles as the /etc/fs mount and unmount program.
6916          * Determine if we should take this behavior based on argv[0].
6917          */
6918         progname = basename(argv[0]);
6919         if (strcmp(progname, "mount") == 0) {
6920                 ret = manual_mount(argc, argv);
6921         } else if (strcmp(progname, "umount") == 0) {
6922                 ret = manual_unmount(argc, argv);
6923         } else {
6924                 /*
6925                  * Make sure the user has specified some command.
6926                  */
6927                 if (argc < 2) {
6928                         (void) fprintf(stderr, gettext("missing command\n"));
6929                         usage(B_FALSE);
6930                 }
6931
6932                 cmdname = argv[1];
6933
6934                 /*
6935                  * The 'umount' command is an alias for 'unmount'
6936                  */
6937                 if (strcmp(cmdname, "umount") == 0)
6938                         cmdname = "unmount";
6939
6940                 /*
6941                  * The 'recv' command is an alias for 'receive'
6942                  */
6943                 if (strcmp(cmdname, "recv") == 0)
6944                         cmdname = "receive";
6945
6946                 /*
6947                  * The 'snap' command is an alias for 'snapshot'
6948                  */
6949                 if (strcmp(cmdname, "snap") == 0)
6950                         cmdname = "snapshot";
6951
6952                 /*
6953                  * Special case '-?'
6954                  */
6955                 if (strcmp(cmdname, "-?") == 0)
6956                         usage(B_TRUE);
6957
6958                 /*
6959                  * Run the appropriate command.
6960                  */
6961                 libzfs_mnttab_cache(g_zfs, B_TRUE);
6962                 if (find_command_idx(cmdname, &i) == 0) {
6963                         current_command = &command_table[i];
6964                         ret = command_table[i].func(argc - 1, argv + 1);
6965                 } else if (strchr(cmdname, '=') != NULL) {
6966                         verify(find_command_idx("set", &i) == 0);
6967                         current_command = &command_table[i];
6968                         ret = command_table[i].func(argc, argv);
6969                 } else {
6970                         (void) fprintf(stderr, gettext("unrecognized "
6971                             "command '%s'\n"), cmdname);
6972                         usage(B_FALSE);
6973                 }
6974                 libzfs_mnttab_cache(g_zfs, B_FALSE);
6975         }
6976
6977         (void) fclose(mnttab_file);
6978
6979         if (ret == 0 && log_history)
6980                 (void) zpool_log_history(g_zfs, history_str);
6981
6982         libzfs_fini(g_zfs);
6983
6984         /*
6985          * The 'ZFS_ABORT' environment variable causes us to dump core on exit
6986          * for the purposes of running ::findleaks.
6987          */
6988         if (getenv("ZFS_ABORT") != NULL) {
6989                 (void) printf("dumping core by request\n");
6990                 abort();
6991         }
6992
6993         return (ret);
6994 }