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