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

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Copyright (c) 2011, 2016 by Delphix. All rights reserved.
  25  * Copyright 2012 Milan Jurik. All rights reserved.
  26  * Copyright (c) 2012, Joyent, Inc. All rights reserved.
  27  * Copyright (c) 2011-2012 Pawel Jakub Dawidek. All rights reserved.
  28  * Copyright (c) 2012 Martin Matuska <mm@FreeBSD.org>. All rights reserved.
  29  * Copyright (c) 2013 Steven Hartland.  All rights reserved.
  30  * Copyright (c) 2014 Integros [integros.com]
  31  * Copyright 2016 Igor Kozhukhov <ikozhukhov@gmail.com>.
  32  * Copyright 2016 Nexenta Systems, Inc.
  33  */
  34
  35 #include <assert.h>
  36 #include <ctype.h>
  37 #include <errno.h>
  38 #include <getopt.h>
  39 #include <libgen.h>
  40 #include <libintl.h>
  41 #include <libuutil.h>
  42 #include <libnvpair.h>
  43 #include <locale.h>
  44 #include <stddef.h>
  45 #include <stdio.h>
  46 #include <stdlib.h>
  47 #include <strings.h>
  48 #include <unistd.h>
  49 #include <fcntl.h>
  50 #include <zone.h>
  51 #include <grp.h>
  52 #include <pwd.h>
  53 #include <signal.h>
  54 #include <sys/debug.h>
  55 #include <sys/list.h>
  56 #include <sys/mntent.h>
  57 #include <sys/mnttab.h>
  58 #include <sys/mount.h>
  59 #include <sys/stat.h>
  60 #include <sys/fs/zfs.h>
  61 #include <sys/types.h>
  62 #include <time.h>
  63 #include <err.h>
  64 #include <jail.h>
  65
  66 #include <libzfs.h>
  67 #include <libzfs_core.h>
  68 #include <zfs_prop.h>
  69 #include <zfs_deleg.h>
  70 #include <libuutil.h>
  71 #ifdef illumos
  72 #include <aclutils.h>
  73 #include <directory.h>
  74 #include <idmap.h>
  75 #endif
  76
  77 #include "zfs_iter.h"
  78 #include "zfs_util.h"
  79 #include "zfs_comutil.h"
  80
  81 libzfs_handle_t *g_zfs;
  82
  83 static FILE *mnttab_file;
  84 static char history_str[HIS_MAX_RECORD_LEN];
  85 static boolean_t log_history = B_TRUE;
  86
  87 static int zfs_do_clone(int argc, char **argv);
  88 static int zfs_do_create(int argc, char **argv);
  89 static int zfs_do_destroy(int argc, char **argv);
  90 static int zfs_do_get(int argc, char **argv);
  91 static int zfs_do_inherit(int argc, char **argv);
  92 static int zfs_do_list(int argc, char **argv);
  93 static int zfs_do_mount(int argc, char **argv);
  94 static int zfs_do_rename(int argc, char **argv);
  95 static int zfs_do_rollback(int argc, char **argv);
  96 static int zfs_do_set(int argc, char **argv);
  97 static int zfs_do_upgrade(int argc, char **argv);
  98 static int zfs_do_snapshot(int argc, char **argv);
  99 static int zfs_do_unmount(int argc, char **argv);
 100 static int zfs_do_share(int argc, char **argv);
 101 static int zfs_do_unshare(int argc, char **argv);
 102 static int zfs_do_send(int argc, char **argv);
 103 static int zfs_do_receive(int argc, char **argv);
 104 static int zfs_do_promote(int argc, char **argv);
 105 static int zfs_do_userspace(int argc, char **argv);
 106 static int zfs_do_allow(int argc, char **argv);
 107 static int zfs_do_unallow(int argc, char **argv);
 108 static int zfs_do_hold(int argc, char **argv);
 109 static int zfs_do_holds(int argc, char **argv);
 110 static int zfs_do_release(int argc, char **argv);
 111 static int zfs_do_diff(int argc, char **argv);
 112 static int zfs_do_jail(int argc, char **argv);
 113 static int zfs_do_unjail(int argc, char **argv);
 114 static int zfs_do_bookmark(int argc, char **argv);
 115 static int zfs_do_channel_program(int argc, char **argv);
 116
 117 /*
 118  * Enable a reasonable set of defaults for libumem debugging on DEBUG builds.
 119  */
 120
 121 #ifdef DEBUG
 122 const char *
 123 _umem_debug_init(void)
 124 {
 125         return ("default,verbose"); /* $UMEM_DEBUG setting */
 126 }
 127
 128 const char *
 129 _umem_logging_init(void)
 130 {
 131         return ("fail,contents"); /* $UMEM_LOGGING setting */
 132 }
 133 #endif
 134
 135 typedef enum {
 136         HELP_CLONE,
 137         HELP_CREATE,
 138         HELP_DESTROY,
 139         HELP_GET,
 140         HELP_INHERIT,
 141         HELP_UPGRADE,
 142         HELP_JAIL,
 143         HELP_UNJAIL,
 144         HELP_LIST,
 145         HELP_MOUNT,
 146         HELP_PROMOTE,
 147         HELP_RECEIVE,
 148         HELP_RENAME,
 149         HELP_ROLLBACK,
 150         HELP_SEND,
 151         HELP_SET,
 152         HELP_SHARE,
 153         HELP_SNAPSHOT,
 154         HELP_UNMOUNT,
 155         HELP_UNSHARE,
 156         HELP_ALLOW,
 157         HELP_UNALLOW,
 158         HELP_USERSPACE,
 159         HELP_GROUPSPACE,
 160         HELP_HOLD,
 161         HELP_HOLDS,
 162         HELP_RELEASE,
 163         HELP_DIFF,
 164         HELP_BOOKMARK,
 165         HELP_CHANNEL_PROGRAM,
 166 } zfs_help_t;
 167
 168 typedef struct zfs_command {
 169         const char      *name;
 170         int             (*func)(int argc, char **argv);
 171         zfs_help_t      usage;
 172 } zfs_command_t;
 173
 174 /*
 175  * Master command table.  Each ZFS command has a name, associated function, and
 176  * usage message.  The usage messages need to be internationalized, so we have
 177  * to have a function to return the usage message based on a command index.
 178  *
 179  * These commands are organized according to how they are displayed in the usage
 180  * message.  An empty command (one with a NULL name) indicates an empty line in
 181  * the generic usage message.
 182  */
 183 static zfs_command_t command_table[] = {
 184         { "create",     zfs_do_create,          HELP_CREATE             },
 185         { "destroy",    zfs_do_destroy,         HELP_DESTROY            },
 186         { NULL },
 187         { "snapshot",   zfs_do_snapshot,        HELP_SNAPSHOT           },
 188         { "rollback",   zfs_do_rollback,        HELP_ROLLBACK           },
 189         { "clone",      zfs_do_clone,           HELP_CLONE              },
 190         { "promote",    zfs_do_promote,         HELP_PROMOTE            },
 191         { "rename",     zfs_do_rename,          HELP_RENAME             },
 192         { "bookmark",   zfs_do_bookmark,        HELP_BOOKMARK           },
 193         { "program",    zfs_do_channel_program, HELP_CHANNEL_PROGRAM    },
 194         { NULL },
 195         { "list",       zfs_do_list,            HELP_LIST               },
 196         { NULL },
 197         { "set",        zfs_do_set,             HELP_SET                },
 198         { "get",        zfs_do_get,             HELP_GET                },
 199         { "inherit",    zfs_do_inherit,         HELP_INHERIT            },
 200         { "upgrade",    zfs_do_upgrade,         HELP_UPGRADE            },
 201         { "userspace",  zfs_do_userspace,       HELP_USERSPACE          },
 202         { "groupspace", zfs_do_userspace,       HELP_GROUPSPACE         },
 203         { NULL },
 204         { "mount",      zfs_do_mount,           HELP_MOUNT              },
 205         { "unmount",    zfs_do_unmount,         HELP_UNMOUNT            },
 206         { "share",      zfs_do_share,           HELP_SHARE              },
 207         { "unshare",    zfs_do_unshare,         HELP_UNSHARE            },
 208         { NULL },
 209         { "send",       zfs_do_send,            HELP_SEND               },
 210         { "receive",    zfs_do_receive,         HELP_RECEIVE            },
 211         { NULL },
 212         { "allow",      zfs_do_allow,           HELP_ALLOW              },
 213         { NULL },
 214         { "unallow",    zfs_do_unallow,         HELP_UNALLOW            },
 215         { NULL },
 216         { "hold",       zfs_do_hold,            HELP_HOLD               },
 217         { "holds",      zfs_do_holds,           HELP_HOLDS              },
 218         { "release",    zfs_do_release,         HELP_RELEASE            },
 219         { "diff",       zfs_do_diff,            HELP_DIFF               },
 220         { NULL },
 221         { "jail",       zfs_do_jail,            HELP_JAIL               },
 222         { "unjail",     zfs_do_unjail,          HELP_UNJAIL             },
 223 };
 224
 225 #define NCOMMAND        (sizeof (command_table) / sizeof (command_table[0]))
 226
 227 zfs_command_t *current_command;
 228
 229 static const char *
 230 get_usage(zfs_help_t idx)
 231 {
 232         switch (idx) {
 233         case HELP_CLONE:
 234                 return (gettext("\tclone [-p] [-o property=value] ... "
 235                     "<snapshot> <filesystem|volume>\n"));
 236         case HELP_CREATE:
 237                 return (gettext("\tcreate [-pu] [-o property=value] ... "
 238                     "<filesystem>\n"
 239                     "\tcreate [-ps] [-b blocksize] [-o property=value] ... "
 240                     "-V <size> <volume>\n"));
 241         case HELP_DESTROY:
 242                 return (gettext("\tdestroy [-fnpRrv] <filesystem|volume>\n"
 243                     "\tdestroy [-dnpRrv] "
 244                     "<filesystem|volume>@<snap>[%<snap>][,...]\n"
 245                     "\tdestroy <filesystem|volume>#<bookmark>\n"));
 246         case HELP_GET:
 247                 return (gettext("\tget [-rHp] [-d max] "
 248                     "[-o \"all\" | field[,...]]\n"
 249                     "\t    [-t type[,...]] [-s source[,...]]\n"
 250                     "\t    <\"all\" | property[,...]> "
 251                     "[filesystem|volume|snapshot|bookmark] ...\n"));
 252         case HELP_INHERIT:
 253                 return (gettext("\tinherit [-rS] <property> "
 254                     "<filesystem|volume|snapshot> ...\n"));
 255         case HELP_UPGRADE:
 256                 return (gettext("\tupgrade [-v]\n"
 257                     "\tupgrade [-r] [-V version] <-a | filesystem ...>\n"));
 258         case HELP_JAIL:
 259                 return (gettext("\tjail <jailid|jailname> <filesystem>\n"));
 260         case HELP_UNJAIL:
 261                 return (gettext("\tunjail <jailid|jailname> <filesystem>\n"));
 262         case HELP_LIST:
 263                 return (gettext("\tlist [-Hp] [-r|-d max] [-o property[,...]] "
 264                     "[-s property]...\n\t    [-S property]... [-t type[,...]] "
 265                     "[filesystem|volume|snapshot] ...\n"));
 266         case HELP_MOUNT:
 267                 return (gettext("\tmount\n"
 268                     "\tmount [-vO] [-o opts] <-a | filesystem>\n"));
 269         case HELP_PROMOTE:
 270                 return (gettext("\tpromote <clone-filesystem>\n"));
 271         case HELP_RECEIVE:
 272                 return (gettext("\treceive|recv [-vnsFu] <filesystem|volume|"
 273                     "snapshot>\n"
 274                     "\treceive|recv [-vnsFu] [-o origin=<snapshot>] [-d | -e] "
 275                     "<filesystem>\n"
 276                     "\treceive|recv -A <filesystem|volume>\n"));
 277         case HELP_RENAME:
 278                 return (gettext("\trename [-f] <filesystem|volume|snapshot> "
 279                     "<filesystem|volume|snapshot>\n"
 280                     "\trename [-f] -p <filesystem|volume> <filesystem|volume>\n"
 281                     "\trename -r <snapshot> <snapshot>\n"
 282                     "\trename -u [-p] <filesystem> <filesystem>"));
 283         case HELP_ROLLBACK:
 284                 return (gettext("\trollback [-rRf] <snapshot>\n"));
 285         case HELP_SEND:
 286                 return (gettext("\tsend [-DnPpRvLec] [-[iI] snapshot] "
 287                     "<snapshot>\n"
 288                     "\tsend [-Le] [-i snapshot|bookmark] "
 289                     "<filesystem|volume|snapshot>\n"
 290                     "\tsend [-nvPe] -t <receive_resume_token>\n"));
 291         case HELP_SET:
 292                 return (gettext("\tset <property=value> ... "
 293                     "<filesystem|volume|snapshot> ...\n"));
 294         case HELP_SHARE:
 295                 return (gettext("\tshare <-a | filesystem>\n"));
 296         case HELP_SNAPSHOT:
 297                 return (gettext("\tsnapshot|snap [-r] [-o property=value] ... "
 298                     "<filesystem|volume>@<snap> ...\n"));
 299         case HELP_UNMOUNT:
 300                 return (gettext("\tunmount|umount [-f] "
 301                     "<-a | filesystem|mountpoint>\n"));
 302         case HELP_UNSHARE:
 303                 return (gettext("\tunshare "
 304                     "<-a | filesystem|mountpoint>\n"));
 305         case HELP_ALLOW:
 306                 return (gettext("\tallow <filesystem|volume>\n"
 307                     "\tallow [-ldug] "
 308                     "<\"everyone\"|user|group>[,...] <perm|@setname>[,...]\n"
 309                     "\t    <filesystem|volume>\n"
 310                     "\tallow [-ld] -e <perm|@setname>[,...] "
 311                     "<filesystem|volume>\n"
 312                     "\tallow -c <perm|@setname>[,...] <filesystem|volume>\n"
 313                     "\tallow -s @setname <perm|@setname>[,...] "
 314                     "<filesystem|volume>\n"));
 315         case HELP_UNALLOW:
 316                 return (gettext("\tunallow [-rldug] "
 317                     "<\"everyone\"|user|group>[,...]\n"
 318                     "\t    [<perm|@setname>[,...]] <filesystem|volume>\n"
 319                     "\tunallow [-rld] -e [<perm|@setname>[,...]] "
 320                     "<filesystem|volume>\n"
 321                     "\tunallow [-r] -c [<perm|@setname>[,...]] "
 322                     "<filesystem|volume>\n"
 323                     "\tunallow [-r] -s @setname [<perm|@setname>[,...]] "
 324                     "<filesystem|volume>\n"));
 325         case HELP_USERSPACE:
 326                 return (gettext("\tuserspace [-Hinp] [-o field[,...]] "
 327                     "[-s field] ...\n"
 328                     "\t    [-S field] ... [-t type[,...]] "
 329                     "<filesystem|snapshot>\n"));
 330         case HELP_GROUPSPACE:
 331                 return (gettext("\tgroupspace [-Hinp] [-o field[,...]] "
 332                     "[-s field] ...\n"
 333                     "\t    [-S field] ... [-t type[,...]] "
 334                     "<filesystem|snapshot>\n"));
 335         case HELP_HOLD:
 336                 return (gettext("\thold [-r] <tag> <snapshot> ...\n"));
 337         case HELP_HOLDS:
 338                 return (gettext("\tholds [-Hp] [-r|-d depth] "
 339                     "<filesystem|volume|snapshot> ...\n"));
 340         case HELP_RELEASE:
 341                 return (gettext("\trelease [-r] <tag> <snapshot> ...\n"));
 342         case HELP_DIFF:
 343                 return (gettext("\tdiff [-FHt] <snapshot> "
 344                     "[snapshot|filesystem]\n"));
 345         case HELP_BOOKMARK:
 346                 return (gettext("\tbookmark <snapshot> <bookmark>\n"));
 347         case HELP_CHANNEL_PROGRAM:
 348                 return (gettext("\tprogram [-t <instruction limit>] "
 349                     "[-m <memory limit (b)>] <pool> <program file> "
 350                     "[lua args...]\n"));
 351         }
 352
 353         abort();
 354         /* NOTREACHED */
 355 }
 356
 357 void
 358 nomem(void)
 359 {
 360         (void) fprintf(stderr, gettext("internal error: out of memory\n"));
 361         exit(1);
 362 }
 363
 364 /*
 365  * Utility function to guarantee malloc() success.
 366  */
 367
 368 void *
 369 safe_malloc(size_t size)
 370 {
 371         void *data;
 372
 373         if ((data = calloc(1, size)) == NULL)
 374                 nomem();
 375
 376         return (data);
 377 }
 378
 379 void *
 380 safe_realloc(void *data, size_t size)
 381 {
 382         void *newp;
 383         if ((newp = realloc(data, size)) == NULL) {
 384                 free(data);
 385                 nomem();
 386         }
 387
 388         return (newp);
 389 }
 390
 391 static char *
 392 safe_strdup(char *str)
 393 {
 394         char *dupstr = strdup(str);
 395
 396         if (dupstr == NULL)
 397                 nomem();
 398
 399         return (dupstr);
 400 }
 401
 402 /*
 403  * Callback routine that will print out information for each of
 404  * the properties.
 405  */
 406 static int
 407 usage_prop_cb(int prop, void *cb)
 408 {
 409         FILE *fp = cb;
 410
 411         (void) fprintf(fp, "\t%-15s ", zfs_prop_to_name(prop));
 412
 413         if (zfs_prop_readonly(prop))
 414                 (void) fprintf(fp, " NO    ");
 415         else
 416                 (void) fprintf(fp, "YES    ");
 417
 418         if (zfs_prop_inheritable(prop))
 419                 (void) fprintf(fp, "  YES   ");
 420         else
 421                 (void) fprintf(fp, "   NO   ");
 422
 423         if (zfs_prop_values(prop) == NULL)
 424                 (void) fprintf(fp, "-\n");
 425         else
 426                 (void) fprintf(fp, "%s\n", zfs_prop_values(prop));
 427
 428         return (ZPROP_CONT);
 429 }
 430
 431 /*
 432  * Display usage message.  If we're inside a command, display only the usage for
 433  * that command.  Otherwise, iterate over the entire command table and display
 434  * a complete usage message.
 435  */
 436 static void
 437 usage(boolean_t requested)
 438 {
 439         int i;
 440         boolean_t show_properties = B_FALSE;
 441         FILE *fp = requested ? stdout : stderr;
 442
 443         if (current_command == NULL) {
 444
 445                 (void) fprintf(fp, gettext("usage: zfs command args ...\n"));
 446                 (void) fprintf(fp,
 447                     gettext("where 'command' is one of the following:\n\n"));
 448
 449                 for (i = 0; i < NCOMMAND; i++) {
 450                         if (command_table[i].name == NULL)
 451                                 (void) fprintf(fp, "\n");
 452                         else
 453                                 (void) fprintf(fp, "%s",
 454                                     get_usage(command_table[i].usage));
 455                 }
 456
 457                 (void) fprintf(fp, gettext("\nEach dataset is of the form: "
 458                     "pool/[dataset/]*dataset[@name]\n"));
 459         } else {
 460                 (void) fprintf(fp, gettext("usage:\n"));
 461                 (void) fprintf(fp, "%s", get_usage(current_command->usage));
 462         }
 463
 464         if (current_command != NULL &&
 465             (strcmp(current_command->name, "set") == 0 ||
 466             strcmp(current_command->name, "get") == 0 ||
 467             strcmp(current_command->name, "inherit") == 0 ||
 468             strcmp(current_command->name, "list") == 0))
 469                 show_properties = B_TRUE;
 470
 471         if (show_properties) {
 472                 (void) fprintf(fp,
 473                     gettext("\nThe following properties are supported:\n"));
 474
 475                 (void) fprintf(fp, "\n\t%-14s %s  %s   %s\n\n",
 476                     "PROPERTY", "EDIT", "INHERIT", "VALUES");
 477
 478                 /* Iterate over all properties */
 479                 (void) zprop_iter(usage_prop_cb, fp, B_FALSE, B_TRUE,
 480                     ZFS_TYPE_DATASET);
 481
 482                 (void) fprintf(fp, "\t%-15s ", "userused@...");
 483                 (void) fprintf(fp, " NO       NO   <size>\n");
 484                 (void) fprintf(fp, "\t%-15s ", "groupused@...");
 485                 (void) fprintf(fp, " NO       NO   <size>\n");
 486                 (void) fprintf(fp, "\t%-15s ", "userquota@...");
 487                 (void) fprintf(fp, "YES       NO   <size> | none\n");
 488                 (void) fprintf(fp, "\t%-15s ", "groupquota@...");
 489                 (void) fprintf(fp, "YES       NO   <size> | none\n");
 490                 (void) fprintf(fp, "\t%-15s ", "written@<snap>");
 491                 (void) fprintf(fp, " NO       NO   <size>\n");
 492
 493                 (void) fprintf(fp, gettext("\nSizes are specified in bytes "
 494                     "with standard units such as K, M, G, etc.\n"));
 495                 (void) fprintf(fp, gettext("\nUser-defined properties can "
 496                     "be specified by using a name containing a colon (:).\n"));
 497                 (void) fprintf(fp, gettext("\nThe {user|group}{used|quota}@ "
 498                     "properties must be appended with\n"
 499                     "a user or group specifier of one of these forms:\n"
 500                     "    POSIX name      (eg: \"matt\")\n"
 501                     "    POSIX id        (eg: \"126829\")\n"
 502                     "    SMB name@domain (eg: \"matt@sun\")\n"
 503                     "    SMB SID         (eg: \"S-1-234-567-89\")\n"));
 504         } else {
 505                 (void) fprintf(fp,
 506                     gettext("\nFor the property list, run: %s\n"),
 507                     "zfs set|get");
 508                 (void) fprintf(fp,
 509                     gettext("\nFor the delegated permission list, run: %s\n"),
 510                     "zfs allow|unallow");
 511         }
 512
 513         /*
 514          * See comments at end of main().
 515          */
 516         if (getenv("ZFS_ABORT") != NULL) {
 517                 (void) printf("dumping core by request\n");
 518                 abort();
 519         }
 520
 521         exit(requested ? 0 : 2);
 522 }
 523
 524 /*
 525  * Take a property=value argument string and add it to the given nvlist.
 526  * Modifies the argument inplace.
 527  */
 528 static int
 529 parseprop(nvlist_t *props, char *propname)
 530 {
 531         char *propval, *strval;
 532
 533         if ((propval = strchr(propname, '=')) == NULL) {
 534                 (void) fprintf(stderr, gettext("missing "
 535                     "'=' for property=value argument\n"));
 536                 return (-1);
 537         }
 538         *propval = '\0';
 539         propval++;
 540         if (nvlist_lookup_string(props, propname, &strval) == 0) {
 541                 (void) fprintf(stderr, gettext("property '%s' "
 542                     "specified multiple times\n"), propname);
 543                 return (-1);
 544         }
 545         if (nvlist_add_string(props, propname, propval) != 0)
 546                 nomem();
 547         return (0);
 548 }
 549
 550 static int
 551 parse_depth(char *opt, int *flags)
 552 {
 553         char *tmp;
 554         int depth;
 555
 556         depth = (int)strtol(opt, &tmp, 0);
 557         if (*tmp) {
 558                 (void) fprintf(stderr,
 559                     gettext("%s is not an integer\n"), opt);
 560                 usage(B_FALSE);
 561         }
 562         if (depth < 0) {
 563                 (void) fprintf(stderr,
 564                     gettext("Depth can not be negative.\n"));
 565                 usage(B_FALSE);
 566         }
 567         *flags |= (ZFS_ITER_DEPTH_LIMIT|ZFS_ITER_RECURSE);
 568         return (depth);
 569 }
 570
 571 #define PROGRESS_DELAY 2                /* seconds */
 572
 573 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";
 574 static time_t pt_begin;
 575 static char *pt_header = NULL;
 576 static boolean_t pt_shown;
 577
 578 static void
 579 start_progress_timer(void)
 580 {
 581         pt_begin = time(NULL) + PROGRESS_DELAY;
 582         pt_shown = B_FALSE;
 583 }
 584
 585 static void
 586 set_progress_header(char *header)
 587 {
 588         assert(pt_header == NULL);
 589         pt_header = safe_strdup(header);
 590         if (pt_shown) {
 591                 (void) printf("%s: ", header);
 592                 (void) fflush(stdout);
 593         }
 594 }
 595
 596 static void
 597 update_progress(char *update)
 598 {
 599         if (!pt_shown && time(NULL) > pt_begin) {
 600                 int len = strlen(update);
 601
 602                 (void) printf("%s: %s%*.*s", pt_header, update, len, len,
 603                     pt_reverse);
 604                 (void) fflush(stdout);
 605                 pt_shown = B_TRUE;
 606         } else if (pt_shown) {
 607                 int len = strlen(update);
 608
 609                 (void) printf("%s%*.*s", update, len, len, pt_reverse);
 610                 (void) fflush(stdout);
 611         }
 612 }
 613
 614 static void
 615 finish_progress(char *done)
 616 {
 617         if (pt_shown) {
 618                 (void) printf("%s\n", done);
 619                 (void) fflush(stdout);
 620         }
 621         free(pt_header);
 622         pt_header = NULL;
 623 }
 624
 625 /*
 626  * Check if the dataset is mountable and should be automatically mounted.
 627  */
 628 static boolean_t
 629 should_auto_mount(zfs_handle_t *zhp)
 630 {
 631         if (!zfs_prop_valid_for_type(ZFS_PROP_CANMOUNT, zfs_get_type(zhp)))
 632                 return (B_FALSE);
 633         return (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) == ZFS_CANMOUNT_ON);
 634 }
 635
 636 /*
 637  * zfs clone [-p] [-o prop=value] ... <snap> <fs | vol>
 638  *
 639  * Given an existing dataset, create a writable copy whose initial contents
 640  * are the same as the source.  The newly created dataset maintains a
 641  * dependency on the original; the original cannot be destroyed so long as
 642  * the clone exists.
 643  *
 644  * The '-p' flag creates all the non-existing ancestors of the target first.
 645  */
 646 static int
 647 zfs_do_clone(int argc, char **argv)
 648 {
 649         zfs_handle_t *zhp = NULL;
 650         boolean_t parents = B_FALSE;
 651         nvlist_t *props;
 652         int ret = 0;
 653         int c;
 654
 655         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
 656                 nomem();
 657
 658         /* check options */
 659         while ((c = getopt(argc, argv, "o:p")) != -1) {
 660                 switch (c) {
 661                 case 'o':
 662                         if (parseprop(props, optarg) != 0)
 663                                 return (1);
 664                         break;
 665                 case 'p':
 666                         parents = B_TRUE;
 667                         break;
 668                 case '?':
 669                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
 670                             optopt);
 671                         goto usage;
 672                 }
 673         }
 674
 675         argc -= optind;
 676         argv += optind;
 677
 678         /* check number of arguments */
 679         if (argc < 1) {
 680                 (void) fprintf(stderr, gettext("missing source dataset "
 681                     "argument\n"));
 682                 goto usage;
 683         }
 684         if (argc < 2) {
 685                 (void) fprintf(stderr, gettext("missing target dataset "
 686                     "argument\n"));
 687                 goto usage;
 688         }
 689         if (argc > 2) {
 690                 (void) fprintf(stderr, gettext("too many arguments\n"));
 691                 goto usage;
 692         }
 693
 694         /* open the source dataset */
 695         if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
 696                 return (1);
 697
 698         if (parents && zfs_name_valid(argv[1], ZFS_TYPE_FILESYSTEM |
 699             ZFS_TYPE_VOLUME)) {
 700                 /*
 701                  * Now create the ancestors of the target dataset.  If the
 702                  * target already exists and '-p' option was used we should not
 703                  * complain.
 704                  */
 705                 if (zfs_dataset_exists(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM |
 706                     ZFS_TYPE_VOLUME))
 707                         return (0);
 708                 if (zfs_create_ancestors(g_zfs, argv[1]) != 0)
 709                         return (1);
 710         }
 711
 712         /* pass to libzfs */
 713         ret = zfs_clone(zhp, argv[1], props);
 714
 715         /* create the mountpoint if necessary */
 716         if (ret == 0) {
 717                 zfs_handle_t *clone;
 718
 719                 clone = zfs_open(g_zfs, argv[1], ZFS_TYPE_DATASET);
 720                 if (clone != NULL) {
 721                         /*
 722                          * If the user doesn't want the dataset
 723                          * automatically mounted, then skip the mount/share
 724                          * step.
 725                          */
 726                         if (should_auto_mount(clone)) {
 727                                 if ((ret = zfs_mount(clone, NULL, 0)) != 0) {
 728                                         (void) fprintf(stderr, gettext("clone "
 729                                             "successfully created, "
 730                                             "but not mounted\n"));
 731                                 } else if ((ret = zfs_share(clone)) != 0) {
 732                                         (void) fprintf(stderr, gettext("clone "
 733                                             "successfully created, "
 734                                             "but not shared\n"));
 735                                 }
 736                         }
 737                         zfs_close(clone);
 738                 }
 739         }
 740
 741         zfs_close(zhp);
 742         nvlist_free(props);
 743
 744         return (!!ret);
 745
 746 usage:
 747         if (zhp)
 748                 zfs_close(zhp);
 749         nvlist_free(props);
 750         usage(B_FALSE);
 751         return (-1);
 752 }
 753
 754 /*
 755  * zfs create [-pu] [-o prop=value] ... fs
 756  * zfs create [-ps] [-b blocksize] [-o prop=value] ... -V vol size
 757  *
 758  * Create a new dataset.  This command can be used to create filesystems
 759  * and volumes.  Snapshot creation is handled by 'zfs snapshot'.
 760  * For volumes, the user must specify a size to be used.
 761  *
 762  * The '-s' flag applies only to volumes, and indicates that we should not try
 763  * to set the reservation for this volume.  By default we set a reservation
 764  * equal to the size for any volume.  For pools with SPA_VERSION >=
 765  * SPA_VERSION_REFRESERVATION, we set a refreservation instead.
 766  *
 767  * The '-p' flag creates all the non-existing ancestors of the target first.
 768  *
 769  * The '-u' flag prevents mounting of newly created file system.
 770  */
 771 static int
 772 zfs_do_create(int argc, char **argv)
 773 {
 774         zfs_type_t type = ZFS_TYPE_FILESYSTEM;
 775         zfs_handle_t *zhp = NULL;
 776         uint64_t volsize = 0;
 777         int c;
 778         boolean_t noreserve = B_FALSE;
 779         boolean_t bflag = B_FALSE;
 780         boolean_t parents = B_FALSE;
 781         boolean_t nomount = B_FALSE;
 782         int ret = 1;
 783         nvlist_t *props;
 784         uint64_t intval;
 785
 786         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
 787                 nomem();
 788
 789         /* check options */
 790         while ((c = getopt(argc, argv, ":V:b:so:pu")) != -1) {
 791                 switch (c) {
 792                 case 'V':
 793                         type = ZFS_TYPE_VOLUME;
 794                         if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
 795                                 (void) fprintf(stderr, gettext("bad volume "
 796                                     "size '%s': %s\n"), optarg,
 797                                     libzfs_error_description(g_zfs));
 798                                 goto error;
 799                         }
 800
 801                         if (nvlist_add_uint64(props,
 802                             zfs_prop_to_name(ZFS_PROP_VOLSIZE), intval) != 0)
 803                                 nomem();
 804                         volsize = intval;
 805                         break;
 806                 case 'p':
 807                         parents = B_TRUE;
 808                         break;
 809                 case 'b':
 810                         bflag = B_TRUE;
 811                         if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
 812                                 (void) fprintf(stderr, gettext("bad volume "
 813                                     "block size '%s': %s\n"), optarg,
 814                                     libzfs_error_description(g_zfs));
 815                                 goto error;
 816                         }
 817
 818                         if (nvlist_add_uint64(props,
 819                             zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
 820                             intval) != 0)
 821                                 nomem();
 822                         break;
 823                 case 'o':
 824                         if (parseprop(props, optarg) != 0)
 825                                 goto error;
 826                         break;
 827                 case 's':
 828                         noreserve = B_TRUE;
 829                         break;
 830                 case 'u':
 831                         nomount = B_TRUE;
 832                         break;
 833                 case ':':
 834                         (void) fprintf(stderr, gettext("missing size "
 835                             "argument\n"));
 836                         goto badusage;
 837                 case '?':
 838                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
 839                             optopt);
 840                         goto badusage;
 841                 }
 842         }
 843
 844         if ((bflag || noreserve) && type != ZFS_TYPE_VOLUME) {
 845                 (void) fprintf(stderr, gettext("'-s' and '-b' can only be "
 846                     "used when creating a volume\n"));
 847                 goto badusage;
 848         }
 849         if (nomount && type != ZFS_TYPE_FILESYSTEM) {
 850                 (void) fprintf(stderr, gettext("'-u' can only be "
 851                     "used when creating a file system\n"));
 852                 goto badusage;
 853         }
 854
 855         argc -= optind;
 856         argv += optind;
 857
 858         /* check number of arguments */
 859         if (argc == 0) {
 860                 (void) fprintf(stderr, gettext("missing %s argument\n"),
 861                     zfs_type_to_name(type));
 862                 goto badusage;
 863         }
 864         if (argc > 1) {
 865                 (void) fprintf(stderr, gettext("too many arguments\n"));
 866                 goto badusage;
 867         }
 868
 869         if (type == ZFS_TYPE_VOLUME && !noreserve) {
 870                 zpool_handle_t *zpool_handle;
 871                 nvlist_t *real_props = NULL;
 872                 uint64_t spa_version;
 873                 char *p;
 874                 zfs_prop_t resv_prop;
 875                 char *strval;
 876                 char msg[1024];
 877
 878                 if ((p = strchr(argv[0], '/')) != NULL)
 879                         *p = '\0';
 880                 zpool_handle = zpool_open(g_zfs, argv[0]);
 881                 if (p != NULL)
 882                         *p = '/';
 883                 if (zpool_handle == NULL)
 884                         goto error;
 885                 spa_version = zpool_get_prop_int(zpool_handle,
 886                     ZPOOL_PROP_VERSION, NULL);
 887                 if (spa_version >= SPA_VERSION_REFRESERVATION)
 888                         resv_prop = ZFS_PROP_REFRESERVATION;
 889                 else
 890                         resv_prop = ZFS_PROP_RESERVATION;
 891
 892                 (void) snprintf(msg, sizeof (msg),
 893                     gettext("cannot create '%s'"), argv[0]);
 894                 if (props && (real_props = zfs_valid_proplist(g_zfs, type,
 895                     props, 0, NULL, zpool_handle, msg)) == NULL) {
 896                         zpool_close(zpool_handle);
 897                         goto error;
 898                 }
 899                 zpool_close(zpool_handle);
 900
 901                 volsize = zvol_volsize_to_reservation(volsize, real_props);
 902                 nvlist_free(real_props);
 903
 904                 if (nvlist_lookup_string(props, zfs_prop_to_name(resv_prop),
 905                     &strval) != 0) {
 906                         if (nvlist_add_uint64(props,
 907                             zfs_prop_to_name(resv_prop), volsize) != 0) {
 908                                 nvlist_free(props);
 909                                 nomem();
 910                         }
 911                 }
 912         }
 913
 914         if (parents && zfs_name_valid(argv[0], type)) {
 915                 /*
 916                  * Now create the ancestors of target dataset.  If the target
 917                  * already exists and '-p' option was used we should not
 918                  * complain.
 919                  */
 920                 if (zfs_dataset_exists(g_zfs, argv[0], type)) {
 921                         ret = 0;
 922                         goto error;
 923                 }
 924                 if (zfs_create_ancestors(g_zfs, argv[0]) != 0)
 925                         goto error;
 926         }
 927
 928         /* pass to libzfs */
 929         if (zfs_create(g_zfs, argv[0], type, props) != 0)
 930                 goto error;
 931
 932         if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL)
 933                 goto error;
 934
 935         ret = 0;
 936
 937         /*
 938          * Mount and/or share the new filesystem as appropriate.  We provide a
 939          * verbose error message to let the user know that their filesystem was
 940          * in fact created, even if we failed to mount or share it.
 941          * If the user doesn't want the dataset automatically mounted,
 942          * then skip the mount/share step altogether.
 943          */
 944         if (!nomount && should_auto_mount(zhp)) {
 945                 if (zfs_mount(zhp, NULL, 0) != 0) {
 946                         (void) fprintf(stderr, gettext("filesystem "
 947                             "successfully created, but not mounted\n"));
 948                         ret = 1;
 949                 } else if (zfs_share(zhp) != 0) {
 950                         (void) fprintf(stderr, gettext("filesystem "
 951                             "successfully created, but not shared\n"));
 952                         ret = 1;
 953                 }
 954         }
 955
 956 error:
 957         if (zhp)
 958                 zfs_close(zhp);
 959         nvlist_free(props);
 960         return (ret);
 961 badusage:
 962         nvlist_free(props);
 963         usage(B_FALSE);
 964         return (2);
 965 }
 966
 967 /*
 968  * zfs destroy [-rRf] <fs, vol>
 969  * zfs destroy [-rRd] <snap>
 970  *
 971  *      -r      Recursively destroy all children
 972  *      -R      Recursively destroy all dependents, including clones
 973  *      -f      Force unmounting of any dependents
 974  *      -d      If we can't destroy now, mark for deferred destruction
 975  *
 976  * Destroys the given dataset.  By default, it will unmount any filesystems,
 977  * and refuse to destroy a dataset that has any dependents.  A dependent can
 978  * either be a child, or a clone of a child.
 979  */
 980 typedef struct destroy_cbdata {
 981         boolean_t       cb_first;
 982         boolean_t       cb_force;
 983         boolean_t       cb_recurse;
 984         boolean_t       cb_error;
 985         boolean_t       cb_doclones;
 986         zfs_handle_t    *cb_target;
 987         boolean_t       cb_defer_destroy;
 988         boolean_t       cb_verbose;
 989         boolean_t       cb_parsable;
 990         boolean_t       cb_dryrun;
 991         nvlist_t        *cb_nvl;
 992         nvlist_t        *cb_batchedsnaps;
 993
 994         /* first snap in contiguous run */
 995         char            *cb_firstsnap;
 996         /* previous snap in contiguous run */
 997         char            *cb_prevsnap;
 998         int64_t         cb_snapused;
 999         char            *cb_snapspec;
1000         char            *cb_bookmark;
1001 } destroy_cbdata_t;
1002
1003 /*
1004  * Check for any dependents based on the '-r' or '-R' flags.
1005  */
1006 static int
1007 destroy_check_dependent(zfs_handle_t *zhp, void *data)
1008 {
1009         destroy_cbdata_t *cbp = data;
1010         const char *tname = zfs_get_name(cbp->cb_target);
1011         const char *name = zfs_get_name(zhp);
1012
1013         if (strncmp(tname, name, strlen(tname)) == 0 &&
1014             (name[strlen(tname)] == '/' || name[strlen(tname)] == '@')) {
1015                 /*
1016                  * This is a direct descendant, not a clone somewhere else in
1017                  * the hierarchy.
1018                  */
1019                 if (cbp->cb_recurse)
1020                         goto out;
1021
1022                 if (cbp->cb_first) {
1023                         (void) fprintf(stderr, gettext("cannot destroy '%s': "
1024                             "%s has children\n"),
1025                             zfs_get_name(cbp->cb_target),
1026                             zfs_type_to_name(zfs_get_type(cbp->cb_target)));
1027                         (void) fprintf(stderr, gettext("use '-r' to destroy "
1028                             "the following datasets:\n"));
1029                         cbp->cb_first = B_FALSE;
1030                         cbp->cb_error = B_TRUE;
1031                 }
1032
1033                 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
1034         } else {
1035                 /*
1036                  * This is a clone.  We only want to report this if the '-r'
1037                  * wasn't specified, or the target is a snapshot.
1038                  */
1039                 if (!cbp->cb_recurse &&
1040                     zfs_get_type(cbp->cb_target) != ZFS_TYPE_SNAPSHOT)
1041                         goto out;
1042
1043                 if (cbp->cb_first) {
1044                         (void) fprintf(stderr, gettext("cannot destroy '%s': "
1045                             "%s has dependent clones\n"),
1046                             zfs_get_name(cbp->cb_target),
1047                             zfs_type_to_name(zfs_get_type(cbp->cb_target)));
1048                         (void) fprintf(stderr, gettext("use '-R' to destroy "
1049                             "the following datasets:\n"));
1050                         cbp->cb_first = B_FALSE;
1051                         cbp->cb_error = B_TRUE;
1052                         cbp->cb_dryrun = B_TRUE;
1053                 }
1054
1055                 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
1056         }
1057
1058 out:
1059         zfs_close(zhp);
1060         return (0);
1061 }
1062
1063 static int
1064 destroy_callback(zfs_handle_t *zhp, void *data)
1065 {
1066         destroy_cbdata_t *cb = data;
1067         const char *name = zfs_get_name(zhp);
1068
1069         if (cb->cb_verbose) {
1070                 if (cb->cb_parsable) {
1071                         (void) printf("destroy\t%s\n", name);
1072                 } else if (cb->cb_dryrun) {
1073                         (void) printf(gettext("would destroy %s\n"),
1074                             name);
1075                 } else {
1076                         (void) printf(gettext("will destroy %s\n"),
1077                             name);
1078                 }
1079         }
1080
1081         /*
1082          * Ignore pools (which we've already flagged as an error before getting
1083          * here).
1084          */
1085         if (strchr(zfs_get_name(zhp), '/') == NULL &&
1086             zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
1087                 zfs_close(zhp);
1088                 return (0);
1089         }
1090         if (cb->cb_dryrun) {
1091                 zfs_close(zhp);
1092                 return (0);
1093         }
1094
1095         /*
1096          * We batch up all contiguous snapshots (even of different
1097          * filesystems) and destroy them with one ioctl.  We can't
1098          * simply do all snap deletions and then all fs deletions,
1099          * because we must delete a clone before its origin.
1100          */
1101         if (zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT) {
1102                 fnvlist_add_boolean(cb->cb_batchedsnaps, name);
1103         } else {
1104                 int error = zfs_destroy_snaps_nvl(g_zfs,
1105                     cb->cb_batchedsnaps, B_FALSE);
1106                 fnvlist_free(cb->cb_batchedsnaps);
1107                 cb->cb_batchedsnaps = fnvlist_alloc();
1108
1109                 if (error != 0 ||
1110                     zfs_unmount(zhp, NULL, cb->cb_force ? MS_FORCE : 0) != 0 ||
1111                     zfs_destroy(zhp, cb->cb_defer_destroy) != 0) {
1112                         zfs_close(zhp);
1113                         return (-1);
1114                 }
1115         }
1116
1117         zfs_close(zhp);
1118         return (0);
1119 }
1120
1121 static int
1122 destroy_print_cb(zfs_handle_t *zhp, void *arg)
1123 {
1124         destroy_cbdata_t *cb = arg;
1125         const char *name = zfs_get_name(zhp);
1126         int err = 0;
1127
1128         if (nvlist_exists(cb->cb_nvl, name)) {
1129                 if (cb->cb_firstsnap == NULL)
1130                         cb->cb_firstsnap = strdup(name);
1131                 if (cb->cb_prevsnap != NULL)
1132                         free(cb->cb_prevsnap);
1133                 /* this snap continues the current range */
1134                 cb->cb_prevsnap = strdup(name);
1135                 if (cb->cb_firstsnap == NULL || cb->cb_prevsnap == NULL)
1136                         nomem();
1137                 if (cb->cb_verbose) {
1138                         if (cb->cb_parsable) {
1139                                 (void) printf("destroy\t%s\n", name);
1140                         } else if (cb->cb_dryrun) {
1141                                 (void) printf(gettext("would destroy %s\n"),
1142                                     name);
1143                         } else {
1144                                 (void) printf(gettext("will destroy %s\n"),
1145                                     name);
1146                         }
1147                 }
1148         } else if (cb->cb_firstsnap != NULL) {
1149                 /* end of this range */
1150                 uint64_t used = 0;
1151                 err = lzc_snaprange_space(cb->cb_firstsnap,
1152                     cb->cb_prevsnap, &used);
1153                 cb->cb_snapused += used;
1154                 free(cb->cb_firstsnap);
1155                 cb->cb_firstsnap = NULL;
1156                 free(cb->cb_prevsnap);
1157                 cb->cb_prevsnap = NULL;
1158         }
1159         zfs_close(zhp);
1160         return (err);
1161 }
1162
1163 static int
1164 destroy_print_snapshots(zfs_handle_t *fs_zhp, destroy_cbdata_t *cb)
1165 {
1166         int err = 0;
1167         assert(cb->cb_firstsnap == NULL);
1168         assert(cb->cb_prevsnap == NULL);
1169         err = zfs_iter_snapshots_sorted(fs_zhp, destroy_print_cb, cb);
1170         if (cb->cb_firstsnap != NULL) {
1171                 uint64_t used = 0;
1172                 if (err == 0) {
1173                         err = lzc_snaprange_space(cb->cb_firstsnap,
1174                             cb->cb_prevsnap, &used);
1175                 }
1176                 cb->cb_snapused += used;
1177                 free(cb->cb_firstsnap);
1178                 cb->cb_firstsnap = NULL;
1179                 free(cb->cb_prevsnap);
1180                 cb->cb_prevsnap = NULL;
1181         }
1182         return (err);
1183 }
1184
1185 static int
1186 snapshot_to_nvl_cb(zfs_handle_t *zhp, void *arg)
1187 {
1188         destroy_cbdata_t *cb = arg;
1189         int err = 0;
1190
1191         /* Check for clones. */
1192         if (!cb->cb_doclones && !cb->cb_defer_destroy) {
1193                 cb->cb_target = zhp;
1194                 cb->cb_first = B_TRUE;
1195                 err = zfs_iter_dependents(zhp, B_TRUE,
1196                     destroy_check_dependent, cb);
1197         }
1198
1199         if (err == 0) {
1200                 if (nvlist_add_boolean(cb->cb_nvl, zfs_get_name(zhp)))
1201                         nomem();
1202         }
1203         zfs_close(zhp);
1204         return (err);
1205 }
1206
1207 static int
1208 gather_snapshots(zfs_handle_t *zhp, void *arg)
1209 {
1210         destroy_cbdata_t *cb = arg;
1211         int err = 0;
1212
1213         err = zfs_iter_snapspec(zhp, cb->cb_snapspec, snapshot_to_nvl_cb, cb);
1214         if (err == ENOENT)
1215                 err = 0;
1216         if (err != 0)
1217                 goto out;
1218
1219         if (cb->cb_verbose) {
1220                 err = destroy_print_snapshots(zhp, cb);
1221                 if (err != 0)
1222                         goto out;
1223         }
1224
1225         if (cb->cb_recurse)
1226                 err = zfs_iter_filesystems(zhp, gather_snapshots, cb);
1227
1228 out:
1229         zfs_close(zhp);
1230         return (err);
1231 }
1232
1233 static int
1234 destroy_clones(destroy_cbdata_t *cb)
1235 {
1236         nvpair_t *pair;
1237         for (pair = nvlist_next_nvpair(cb->cb_nvl, NULL);
1238             pair != NULL;
1239             pair = nvlist_next_nvpair(cb->cb_nvl, pair)) {
1240                 zfs_handle_t *zhp = zfs_open(g_zfs, nvpair_name(pair),
1241                     ZFS_TYPE_SNAPSHOT);
1242                 if (zhp != NULL) {
1243                         boolean_t defer = cb->cb_defer_destroy;
1244                         int err = 0;
1245
1246                         /*
1247                          * We can't defer destroy non-snapshots, so set it to
1248                          * false while destroying the clones.
1249                          */
1250                         cb->cb_defer_destroy = B_FALSE;
1251                         err = zfs_iter_dependents(zhp, B_FALSE,
1252                             destroy_callback, cb);
1253                         cb->cb_defer_destroy = defer;
1254                         zfs_close(zhp);
1255                         if (err != 0)
1256                                 return (err);
1257                 }
1258         }
1259         return (0);
1260 }
1261
1262 static int
1263 zfs_do_destroy(int argc, char **argv)
1264 {
1265         destroy_cbdata_t cb = { 0 };
1266         int rv = 0;
1267         int err = 0;
1268         int c;
1269         zfs_handle_t *zhp = NULL;
1270         char *at, *pound;
1271         zfs_type_t type = ZFS_TYPE_DATASET;
1272
1273         /* check options */
1274         while ((c = getopt(argc, argv, "vpndfrR")) != -1) {
1275                 switch (c) {
1276                 case 'v':
1277                         cb.cb_verbose = B_TRUE;
1278                         break;
1279                 case 'p':
1280                         cb.cb_verbose = B_TRUE;
1281                         cb.cb_parsable = B_TRUE;
1282                         break;
1283                 case 'n':
1284                         cb.cb_dryrun = B_TRUE;
1285                         break;
1286                 case 'd':
1287                         cb.cb_defer_destroy = B_TRUE;
1288                         type = ZFS_TYPE_SNAPSHOT;
1289                         break;
1290                 case 'f':
1291                         cb.cb_force = B_TRUE;
1292                         break;
1293                 case 'r':
1294                         cb.cb_recurse = B_TRUE;
1295                         break;
1296                 case 'R':
1297                         cb.cb_recurse = B_TRUE;
1298                         cb.cb_doclones = B_TRUE;
1299                         break;
1300                 case '?':
1301                 default:
1302                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1303                             optopt);
1304                         usage(B_FALSE);
1305                 }
1306         }
1307
1308         argc -= optind;
1309         argv += optind;
1310
1311         /* check number of arguments */
1312         if (argc == 0) {
1313                 (void) fprintf(stderr, gettext("missing dataset argument\n"));
1314                 usage(B_FALSE);
1315         }
1316         if (argc > 1) {
1317                 (void) fprintf(stderr, gettext("too many arguments\n"));
1318                 usage(B_FALSE);
1319         }
1320
1321         at = strchr(argv[0], '@');
1322         pound = strchr(argv[0], '#');
1323         if (at != NULL) {
1324
1325                 /* Build the list of snaps to destroy in cb_nvl. */
1326                 cb.cb_nvl = fnvlist_alloc();
1327
1328                 *at = '\0';
1329                 zhp = zfs_open(g_zfs, argv[0],
1330                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
1331                 if (zhp == NULL)
1332                         return (1);
1333
1334                 cb.cb_snapspec = at + 1;
1335                 if (gather_snapshots(zfs_handle_dup(zhp), &cb) != 0 ||
1336                     cb.cb_error) {
1337                         rv = 1;
1338                         goto out;
1339                 }
1340
1341                 if (nvlist_empty(cb.cb_nvl)) {
1342                         (void) fprintf(stderr, gettext("could not find any "
1343                             "snapshots to destroy; check snapshot names.\n"));
1344                         rv = 1;
1345                         goto out;
1346                 }
1347
1348                 if (cb.cb_verbose) {
1349                         char buf[16];
1350                         zfs_nicenum(cb.cb_snapused, buf, sizeof (buf));
1351                         if (cb.cb_parsable) {
1352                                 (void) printf("reclaim\t%llu\n",
1353                                     cb.cb_snapused);
1354                         } else if (cb.cb_dryrun) {
1355                                 (void) printf(gettext("would reclaim %s\n"),
1356                                     buf);
1357                         } else {
1358                                 (void) printf(gettext("will reclaim %s\n"),
1359                                     buf);
1360                         }
1361                 }
1362
1363                 if (!cb.cb_dryrun) {
1364                         if (cb.cb_doclones) {
1365                                 cb.cb_batchedsnaps = fnvlist_alloc();
1366                                 err = destroy_clones(&cb);
1367                                 if (err == 0) {
1368                                         err = zfs_destroy_snaps_nvl(g_zfs,
1369                                             cb.cb_batchedsnaps, B_FALSE);
1370                                 }
1371                                 if (err != 0) {
1372                                         rv = 1;
1373                                         goto out;
1374                                 }
1375                         }
1376                         if (err == 0) {
1377                                 err = zfs_destroy_snaps_nvl(g_zfs, cb.cb_nvl,
1378                                     cb.cb_defer_destroy);
1379                         }
1380                 }
1381
1382                 if (err != 0)
1383                         rv = 1;
1384         } else if (pound != NULL) {
1385                 int err;
1386                 nvlist_t *nvl;
1387
1388                 if (cb.cb_dryrun) {
1389                         (void) fprintf(stderr,
1390                             "dryrun is not supported with bookmark\n");
1391                         return (-1);
1392                 }
1393
1394                 if (cb.cb_defer_destroy) {
1395                         (void) fprintf(stderr,
1396                             "defer destroy is not supported with bookmark\n");
1397                         return (-1);
1398                 }
1399
1400                 if (cb.cb_recurse) {
1401                         (void) fprintf(stderr,
1402                             "recursive is not supported with bookmark\n");
1403                         return (-1);
1404                 }
1405
1406                 if (!zfs_bookmark_exists(argv[0])) {
1407                         (void) fprintf(stderr, gettext("bookmark '%s' "
1408                             "does not exist.\n"), argv[0]);
1409                         return (1);
1410                 }
1411
1412                 nvl = fnvlist_alloc();
1413                 fnvlist_add_boolean(nvl, argv[0]);
1414
1415                 err = lzc_destroy_bookmarks(nvl, NULL);
1416                 if (err != 0) {
1417                         (void) zfs_standard_error(g_zfs, err,
1418                             "cannot destroy bookmark");
1419                 }
1420
1421                 nvlist_free(cb.cb_nvl);
1422
1423                 return (err);
1424         } else {
1425                 /* Open the given dataset */
1426                 if ((zhp = zfs_open(g_zfs, argv[0], type)) == NULL)
1427                         return (1);
1428
1429                 cb.cb_target = zhp;
1430
1431                 /*
1432                  * Perform an explicit check for pools before going any further.
1433                  */
1434                 if (!cb.cb_recurse && strchr(zfs_get_name(zhp), '/') == NULL &&
1435                     zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
1436                         (void) fprintf(stderr, gettext("cannot destroy '%s': "
1437                             "operation does not apply to pools\n"),
1438                             zfs_get_name(zhp));
1439                         (void) fprintf(stderr, gettext("use 'zfs destroy -r "
1440                             "%s' to destroy all datasets in the pool\n"),
1441                             zfs_get_name(zhp));
1442                         (void) fprintf(stderr, gettext("use 'zpool destroy %s' "
1443                             "to destroy the pool itself\n"), zfs_get_name(zhp));
1444                         rv = 1;
1445                         goto out;
1446                 }
1447
1448                 /*
1449                  * Check for any dependents and/or clones.
1450                  */
1451                 cb.cb_first = B_TRUE;
1452                 if (!cb.cb_doclones &&
1453                     zfs_iter_dependents(zhp, B_TRUE, destroy_check_dependent,
1454                     &cb) != 0) {
1455                         rv = 1;
1456                         goto out;
1457                 }
1458
1459                 if (cb.cb_error) {
1460                         rv = 1;
1461                         goto out;
1462                 }
1463
1464                 cb.cb_batchedsnaps = fnvlist_alloc();
1465                 if (zfs_iter_dependents(zhp, B_FALSE, destroy_callback,
1466                     &cb) != 0) {
1467                         rv = 1;
1468                         goto out;
1469                 }
1470
1471                 /*
1472                  * Do the real thing.  The callback will close the
1473                  * handle regardless of whether it succeeds or not.
1474                  */
1475                 err = destroy_callback(zhp, &cb);
1476                 zhp = NULL;
1477                 if (err == 0) {
1478                         err = zfs_destroy_snaps_nvl(g_zfs,
1479                             cb.cb_batchedsnaps, cb.cb_defer_destroy);
1480                 }
1481                 if (err != 0)
1482                         rv = 1;
1483         }
1484
1485 out:
1486         fnvlist_free(cb.cb_batchedsnaps);
1487         fnvlist_free(cb.cb_nvl);
1488         if (zhp != NULL)
1489                 zfs_close(zhp);
1490         return (rv);
1491 }
1492
1493 static boolean_t
1494 is_recvd_column(zprop_get_cbdata_t *cbp)
1495 {
1496         int i;
1497         zfs_get_column_t col;
1498
1499         for (i = 0; i < ZFS_GET_NCOLS &&
1500             (col = cbp->cb_columns[i]) != GET_COL_NONE; i++)
1501                 if (col == GET_COL_RECVD)
1502                         return (B_TRUE);
1503         return (B_FALSE);
1504 }
1505
1506 /*
1507  * zfs get [-rHp] [-o all | field[,field]...] [-s source[,source]...]
1508  *      < all | property[,property]... > < fs | snap | vol > ...
1509  *
1510  *      -r      recurse over any child datasets
1511  *      -H      scripted mode.  Headers are stripped, and fields are separated
1512  *              by tabs instead of spaces.
1513  *      -o      Set of fields to display.  One of "name,property,value,
1514  *              received,source". Default is "name,property,value,source".
1515  *              "all" is an alias for all five.
1516  *      -s      Set of sources to allow.  One of
1517  *              "local,default,inherited,received,temporary,none".  Default is
1518  *              all six.
1519  *      -p      Display values in parsable (literal) format.
1520  *
1521  *  Prints properties for the given datasets.  The user can control which
1522  *  columns to display as well as which property types to allow.
1523  */
1524
1525 /*
1526  * Invoked to display the properties for a single dataset.
1527  */
1528 static int
1529 get_callback(zfs_handle_t *zhp, void *data)
1530 {
1531         char buf[ZFS_MAXPROPLEN];
1532         char rbuf[ZFS_MAXPROPLEN];
1533         zprop_source_t sourcetype;
1534         char source[ZFS_MAX_DATASET_NAME_LEN];
1535         zprop_get_cbdata_t *cbp = data;
1536         nvlist_t *user_props = zfs_get_user_props(zhp);
1537         zprop_list_t *pl = cbp->cb_proplist;
1538         nvlist_t *propval;
1539         char *strval;
1540         char *sourceval;
1541         boolean_t received = is_recvd_column(cbp);
1542
1543         for (; pl != NULL; pl = pl->pl_next) {
1544                 char *recvdval = NULL;
1545                 /*
1546                  * Skip the special fake placeholder.  This will also skip over
1547                  * the name property when 'all' is specified.
1548                  */
1549                 if (pl->pl_prop == ZFS_PROP_NAME &&
1550                     pl == cbp->cb_proplist)
1551                         continue;
1552
1553                 if (pl->pl_prop != ZPROP_INVAL) {
1554                         if (zfs_prop_get(zhp, pl->pl_prop, buf,
1555                             sizeof (buf), &sourcetype, source,
1556                             sizeof (source),
1557                             cbp->cb_literal) != 0) {
1558                                 if (pl->pl_all)
1559                                         continue;
1560                                 if (!zfs_prop_valid_for_type(pl->pl_prop,
1561                                     ZFS_TYPE_DATASET)) {
1562                                         (void) fprintf(stderr,
1563                                             gettext("No such property '%s'\n"),
1564                                             zfs_prop_to_name(pl->pl_prop));
1565                                         continue;
1566                                 }
1567                                 sourcetype = ZPROP_SRC_NONE;
1568                                 (void) strlcpy(buf, "-", sizeof (buf));
1569                         }
1570
1571                         if (received && (zfs_prop_get_recvd(zhp,
1572                             zfs_prop_to_name(pl->pl_prop), rbuf, sizeof (rbuf),
1573                             cbp->cb_literal) == 0))
1574                                 recvdval = rbuf;
1575
1576                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1577                             zfs_prop_to_name(pl->pl_prop),
1578                             buf, sourcetype, source, recvdval);
1579                 } else if (zfs_prop_userquota(pl->pl_user_prop)) {
1580                         sourcetype = ZPROP_SRC_LOCAL;
1581
1582                         if (zfs_prop_get_userquota(zhp, pl->pl_user_prop,
1583                             buf, sizeof (buf), cbp->cb_literal) != 0) {
1584                                 sourcetype = ZPROP_SRC_NONE;
1585                                 (void) strlcpy(buf, "-", sizeof (buf));
1586                         }
1587
1588                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1589                             pl->pl_user_prop, buf, sourcetype, source, NULL);
1590                 } else if (zfs_prop_written(pl->pl_user_prop)) {
1591                         sourcetype = ZPROP_SRC_LOCAL;
1592
1593                         if (zfs_prop_get_written(zhp, pl->pl_user_prop,
1594                             buf, sizeof (buf), cbp->cb_literal) != 0) {
1595                                 sourcetype = ZPROP_SRC_NONE;
1596                                 (void) strlcpy(buf, "-", sizeof (buf));
1597                         }
1598
1599                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1600                             pl->pl_user_prop, buf, sourcetype, source, NULL);
1601                 } else {
1602                         if (nvlist_lookup_nvlist(user_props,
1603                             pl->pl_user_prop, &propval) != 0) {
1604                                 if (pl->pl_all)
1605                                         continue;
1606                                 sourcetype = ZPROP_SRC_NONE;
1607                                 strval = "-";
1608                         } else {
1609                                 verify(nvlist_lookup_string(propval,
1610                                     ZPROP_VALUE, &strval) == 0);
1611                                 verify(nvlist_lookup_string(propval,
1612                                     ZPROP_SOURCE, &sourceval) == 0);
1613
1614                                 if (strcmp(sourceval,
1615                                     zfs_get_name(zhp)) == 0) {
1616                                         sourcetype = ZPROP_SRC_LOCAL;
1617                                 } else if (strcmp(sourceval,
1618                                     ZPROP_SOURCE_VAL_RECVD) == 0) {
1619                                         sourcetype = ZPROP_SRC_RECEIVED;
1620                                 } else {
1621                                         sourcetype = ZPROP_SRC_INHERITED;
1622                                         (void) strlcpy(source,
1623                                             sourceval, sizeof (source));
1624                                 }
1625                         }
1626
1627                         if (received && (zfs_prop_get_recvd(zhp,
1628                             pl->pl_user_prop, rbuf, sizeof (rbuf),
1629                             cbp->cb_literal) == 0))
1630                                 recvdval = rbuf;
1631
1632                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1633                             pl->pl_user_prop, strval, sourcetype,
1634                             source, recvdval);
1635                 }
1636         }
1637
1638         return (0);
1639 }
1640
1641 static int
1642 zfs_do_get(int argc, char **argv)
1643 {
1644         zprop_get_cbdata_t cb = { 0 };
1645         int i, c, flags = ZFS_ITER_ARGS_CAN_BE_PATHS;
1646         int types = ZFS_TYPE_DATASET | ZFS_TYPE_BOOKMARK;
1647         char *value, *fields;
1648         int ret = 0;
1649         int limit = 0;
1650         zprop_list_t fake_name = { 0 };
1651
1652         /*
1653          * Set up default columns and sources.
1654          */
1655         cb.cb_sources = ZPROP_SRC_ALL;
1656         cb.cb_columns[0] = GET_COL_NAME;
1657         cb.cb_columns[1] = GET_COL_PROPERTY;
1658         cb.cb_columns[2] = GET_COL_VALUE;
1659         cb.cb_columns[3] = GET_COL_SOURCE;
1660         cb.cb_type = ZFS_TYPE_DATASET;
1661
1662         /* check options */
1663         while ((c = getopt(argc, argv, ":d:o:s:rt:Hp")) != -1) {
1664                 switch (c) {
1665                 case 'p':
1666                         cb.cb_literal = B_TRUE;
1667                         break;
1668                 case 'd':
1669                         limit = parse_depth(optarg, &flags);
1670                         break;
1671                 case 'r':
1672                         flags |= ZFS_ITER_RECURSE;
1673                         break;
1674                 case 'H':
1675                         cb.cb_scripted = B_TRUE;
1676                         break;
1677                 case ':':
1678                         (void) fprintf(stderr, gettext("missing argument for "
1679                             "'%c' option\n"), optopt);
1680                         usage(B_FALSE);
1681                         break;
1682                 case 'o':
1683                         /*
1684                          * Process the set of columns to display.  We zero out
1685                          * the structure to give us a blank slate.
1686                          */
1687                         bzero(&cb.cb_columns, sizeof (cb.cb_columns));
1688                         i = 0;
1689                         while (*optarg != '\0') {
1690                                 static char *col_subopts[] =
1691                                     { "name", "property", "value", "received",
1692                                     "source", "all", NULL };
1693
1694                                 if (i == ZFS_GET_NCOLS) {
1695                                         (void) fprintf(stderr, gettext("too "
1696                                             "many fields given to -o "
1697                                             "option\n"));
1698                                         usage(B_FALSE);
1699                                 }
1700
1701                                 switch (getsubopt(&optarg, col_subopts,
1702                                     &value)) {
1703                                 case 0:
1704                                         cb.cb_columns[i++] = GET_COL_NAME;
1705                                         break;
1706                                 case 1:
1707                                         cb.cb_columns[i++] = GET_COL_PROPERTY;
1708                                         break;
1709                                 case 2:
1710                                         cb.cb_columns[i++] = GET_COL_VALUE;
1711                                         break;
1712                                 case 3:
1713                                         cb.cb_columns[i++] = GET_COL_RECVD;
1714                                         flags |= ZFS_ITER_RECVD_PROPS;
1715                                         break;
1716                                 case 4:
1717                                         cb.cb_columns[i++] = GET_COL_SOURCE;
1718                                         break;
1719                                 case 5:
1720                                         if (i > 0) {
1721                                                 (void) fprintf(stderr,
1722                                                     gettext("\"all\" conflicts "
1723                                                     "with specific fields "
1724                                                     "given to -o option\n"));
1725                                                 usage(B_FALSE);
1726                                         }
1727                                         cb.cb_columns[0] = GET_COL_NAME;
1728                                         cb.cb_columns[1] = GET_COL_PROPERTY;
1729                                         cb.cb_columns[2] = GET_COL_VALUE;
1730                                         cb.cb_columns[3] = GET_COL_RECVD;
1731                                         cb.cb_columns[4] = GET_COL_SOURCE;
1732                                         flags |= ZFS_ITER_RECVD_PROPS;
1733                                         i = ZFS_GET_NCOLS;
1734                                         break;
1735                                 default:
1736                                         (void) fprintf(stderr,
1737                                             gettext("invalid column name "
1738                                             "'%s'\n"), suboptarg);
1739                                         usage(B_FALSE);
1740                                 }
1741                         }
1742                         break;
1743
1744                 case 's':
1745                         cb.cb_sources = 0;
1746                         while (*optarg != '\0') {
1747                                 static char *source_subopts[] = {
1748                                         "local", "default", "inherited",
1749                                         "received", "temporary", "none",
1750                                         NULL };
1751
1752                                 switch (getsubopt(&optarg, source_subopts,
1753                                     &value)) {
1754                                 case 0:
1755                                         cb.cb_sources |= ZPROP_SRC_LOCAL;
1756                                         break;
1757                                 case 1:
1758                                         cb.cb_sources |= ZPROP_SRC_DEFAULT;
1759                                         break;
1760                                 case 2:
1761                                         cb.cb_sources |= ZPROP_SRC_INHERITED;
1762                                         break;
1763                                 case 3:
1764                                         cb.cb_sources |= ZPROP_SRC_RECEIVED;
1765                                         break;
1766                                 case 4:
1767                                         cb.cb_sources |= ZPROP_SRC_TEMPORARY;
1768                                         break;
1769                                 case 5:
1770                                         cb.cb_sources |= ZPROP_SRC_NONE;
1771                                         break;
1772                                 default:
1773                                         (void) fprintf(stderr,
1774                                             gettext("invalid source "
1775                                             "'%s'\n"), suboptarg);
1776                                         usage(B_FALSE);
1777                                 }
1778                         }
1779                         break;
1780
1781                 case 't':
1782                         types = 0;
1783                         flags &= ~ZFS_ITER_PROP_LISTSNAPS;
1784                         while (*optarg != '\0') {
1785                                 static char *type_subopts[] = { "filesystem",
1786                                     "volume", "snapshot", "bookmark",
1787                                     "all", NULL };
1788
1789                                 switch (getsubopt(&optarg, type_subopts,
1790                                     &value)) {
1791                                 case 0:
1792                                         types |= ZFS_TYPE_FILESYSTEM;
1793                                         break;
1794                                 case 1:
1795                                         types |= ZFS_TYPE_VOLUME;
1796                                         break;
1797                                 case 2:
1798                                         types |= ZFS_TYPE_SNAPSHOT;
1799                                         break;
1800                                 case 3:
1801                                         types |= ZFS_TYPE_BOOKMARK;
1802                                         break;
1803                                 case 4:
1804                                         types = ZFS_TYPE_DATASET |
1805                                             ZFS_TYPE_BOOKMARK;
1806                                         break;
1807
1808                                 default:
1809                                         (void) fprintf(stderr,
1810                                             gettext("invalid type '%s'\n"),
1811                                             suboptarg);
1812                                         usage(B_FALSE);
1813                                 }
1814                         }
1815                         break;
1816
1817                 case '?':
1818                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1819                             optopt);
1820                         usage(B_FALSE);
1821                 }
1822         }
1823
1824         argc -= optind;
1825         argv += optind;
1826
1827         if (argc < 1) {
1828                 (void) fprintf(stderr, gettext("missing property "
1829                     "argument\n"));
1830                 usage(B_FALSE);
1831         }
1832
1833         fields = argv[0];
1834
1835         if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
1836             != 0)
1837                 usage(B_FALSE);
1838
1839         argc--;
1840         argv++;
1841
1842         /*
1843          * As part of zfs_expand_proplist(), we keep track of the maximum column
1844          * width for each property.  For the 'NAME' (and 'SOURCE') columns, we
1845          * need to know the maximum name length.  However, the user likely did
1846          * not specify 'name' as one of the properties to fetch, so we need to
1847          * make sure we always include at least this property for
1848          * print_get_headers() to work properly.
1849          */
1850         if (cb.cb_proplist != NULL) {
1851                 fake_name.pl_prop = ZFS_PROP_NAME;
1852                 fake_name.pl_width = strlen(gettext("NAME"));
1853                 fake_name.pl_next = cb.cb_proplist;
1854                 cb.cb_proplist = &fake_name;
1855         }
1856
1857         cb.cb_first = B_TRUE;
1858
1859         /* run for each object */
1860         ret = zfs_for_each(argc, argv, flags, types, NULL,
1861             &cb.cb_proplist, limit, get_callback, &cb);
1862
1863         if (cb.cb_proplist == &fake_name)
1864                 zprop_free_list(fake_name.pl_next);
1865         else
1866                 zprop_free_list(cb.cb_proplist);
1867
1868         return (ret);
1869 }
1870
1871 /*
1872  * inherit [-rS] <property> <fs|vol> ...
1873  *
1874  *      -r      Recurse over all children
1875  *      -S      Revert to received value, if any
1876  *
1877  * For each dataset specified on the command line, inherit the given property
1878  * from its parent.  Inheriting a property at the pool level will cause it to
1879  * use the default value.  The '-r' flag will recurse over all children, and is
1880  * useful for setting a property on a hierarchy-wide basis, regardless of any
1881  * local modifications for each dataset.
1882  */
1883
1884 typedef struct inherit_cbdata {
1885         const char *cb_propname;
1886         boolean_t cb_received;
1887 } inherit_cbdata_t;
1888
1889 static int
1890 inherit_recurse_cb(zfs_handle_t *zhp, void *data)
1891 {
1892         inherit_cbdata_t *cb = data;
1893         zfs_prop_t prop = zfs_name_to_prop(cb->cb_propname);
1894
1895         /*
1896          * If we're doing it recursively, then ignore properties that
1897          * are not valid for this type of dataset.
1898          */
1899         if (prop != ZPROP_INVAL &&
1900             !zfs_prop_valid_for_type(prop, zfs_get_type(zhp)))
1901                 return (0);
1902
1903         return (zfs_prop_inherit(zhp, cb->cb_propname, cb->cb_received) != 0);
1904 }
1905
1906 static int
1907 inherit_cb(zfs_handle_t *zhp, void *data)
1908 {
1909         inherit_cbdata_t *cb = data;
1910
1911         return (zfs_prop_inherit(zhp, cb->cb_propname, cb->cb_received) != 0);
1912 }
1913
1914 static int
1915 zfs_do_inherit(int argc, char **argv)
1916 {
1917         int c;
1918         zfs_prop_t prop;
1919         inherit_cbdata_t cb = { 0 };
1920         char *propname;
1921         int ret = 0;
1922         int flags = 0;
1923         boolean_t received = B_FALSE;
1924
1925         /* check options */
1926         while ((c = getopt(argc, argv, "rS")) != -1) {
1927                 switch (c) {
1928                 case 'r':
1929                         flags |= ZFS_ITER_RECURSE;
1930                         break;
1931                 case 'S':
1932                         received = B_TRUE;
1933                         break;
1934                 case '?':
1935                 default:
1936                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1937                             optopt);
1938                         usage(B_FALSE);
1939                 }
1940         }
1941
1942         argc -= optind;
1943         argv += optind;
1944
1945         /* check number of arguments */
1946         if (argc < 1) {
1947                 (void) fprintf(stderr, gettext("missing property argument\n"));
1948                 usage(B_FALSE);
1949         }
1950         if (argc < 2) {
1951                 (void) fprintf(stderr, gettext("missing dataset argument\n"));
1952                 usage(B_FALSE);
1953         }
1954
1955         propname = argv[0];
1956         argc--;
1957         argv++;
1958
1959         if ((prop = zfs_name_to_prop(propname)) != ZPROP_INVAL) {
1960                 if (zfs_prop_readonly(prop)) {
1961                         (void) fprintf(stderr, gettext(
1962                             "%s property is read-only\n"),
1963                             propname);
1964                         return (1);
1965                 }
1966                 if (!zfs_prop_inheritable(prop) && !received) {
1967                         (void) fprintf(stderr, gettext("'%s' property cannot "
1968                             "be inherited\n"), propname);
1969                         if (prop == ZFS_PROP_QUOTA ||
1970                             prop == ZFS_PROP_RESERVATION ||
1971                             prop == ZFS_PROP_REFQUOTA ||
1972                             prop == ZFS_PROP_REFRESERVATION) {
1973                                 (void) fprintf(stderr, gettext("use 'zfs set "
1974                                     "%s=none' to clear\n"), propname);
1975                                 (void) fprintf(stderr, gettext("use 'zfs "
1976                                     "inherit -S %s' to revert to received "
1977                                     "value\n"), propname);
1978                         }
1979                         return (1);
1980                 }
1981                 if (received && (prop == ZFS_PROP_VOLSIZE ||
1982                     prop == ZFS_PROP_VERSION)) {
1983                         (void) fprintf(stderr, gettext("'%s' property cannot "
1984                             "be reverted to a received value\n"), propname);
1985                         return (1);
1986                 }
1987         } else if (!zfs_prop_user(propname)) {
1988                 (void) fprintf(stderr, gettext("invalid property '%s'\n"),
1989                     propname);
1990                 usage(B_FALSE);
1991         }
1992
1993         cb.cb_propname = propname;
1994         cb.cb_received = received;
1995
1996         if (flags & ZFS_ITER_RECURSE) {
1997                 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
1998                     NULL, NULL, 0, inherit_recurse_cb, &cb);
1999         } else {
2000                 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
2001                     NULL, NULL, 0, inherit_cb, &cb);
2002         }
2003
2004         return (ret);
2005 }
2006
2007 typedef struct upgrade_cbdata {
2008         uint64_t cb_numupgraded;
2009         uint64_t cb_numsamegraded;
2010         uint64_t cb_numfailed;
2011         uint64_t cb_version;
2012         boolean_t cb_newer;
2013         boolean_t cb_foundone;
2014         char cb_lastfs[ZFS_MAX_DATASET_NAME_LEN];
2015 } upgrade_cbdata_t;
2016
2017 static int
2018 same_pool(zfs_handle_t *zhp, const char *name)
2019 {
2020         int len1 = strcspn(name, "/@");
2021         const char *zhname = zfs_get_name(zhp);
2022         int len2 = strcspn(zhname, "/@");
2023
2024         if (len1 != len2)
2025                 return (B_FALSE);
2026         return (strncmp(name, zhname, len1) == 0);
2027 }
2028
2029 static int
2030 upgrade_list_callback(zfs_handle_t *zhp, void *data)
2031 {
2032         upgrade_cbdata_t *cb = data;
2033         int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
2034
2035         /* list if it's old/new */
2036         if ((!cb->cb_newer && version < ZPL_VERSION) ||
2037             (cb->cb_newer && version > ZPL_VERSION)) {
2038                 char *str;
2039                 if (cb->cb_newer) {
2040                         str = gettext("The following filesystems are "
2041                             "formatted using a newer software version and\n"
2042                             "cannot be accessed on the current system.\n\n");
2043                 } else {
2044                         str = gettext("The following filesystems are "
2045                             "out of date, and can be upgraded.  After being\n"
2046                             "upgraded, these filesystems (and any 'zfs send' "
2047                             "streams generated from\n"
2048                             "subsequent snapshots) will no longer be "
2049                             "accessible by older software versions.\n\n");
2050                 }
2051
2052                 if (!cb->cb_foundone) {
2053                         (void) puts(str);
2054                         (void) printf(gettext("VER  FILESYSTEM\n"));
2055                         (void) printf(gettext("---  ------------\n"));
2056                         cb->cb_foundone = B_TRUE;
2057                 }
2058
2059                 (void) printf("%2u   %s\n", version, zfs_get_name(zhp));
2060         }
2061
2062         return (0);
2063 }
2064
2065 static int
2066 upgrade_set_callback(zfs_handle_t *zhp, void *data)
2067 {
2068         upgrade_cbdata_t *cb = data;
2069         int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
2070         int needed_spa_version;
2071         int spa_version;
2072
2073         if (zfs_spa_version(zhp, &spa_version) < 0)
2074                 return (-1);
2075
2076         needed_spa_version = zfs_spa_version_map(cb->cb_version);
2077
2078         if (needed_spa_version < 0)
2079                 return (-1);
2080
2081         if (spa_version < needed_spa_version) {
2082                 /* can't upgrade */
2083                 (void) printf(gettext("%s: can not be "
2084                     "upgraded; the pool version needs to first "
2085                     "be upgraded\nto version %d\n\n"),
2086                     zfs_get_name(zhp), needed_spa_version);
2087                 cb->cb_numfailed++;
2088                 return (0);
2089         }
2090
2091         /* upgrade */
2092         if (version < cb->cb_version) {
2093                 char verstr[16];
2094                 (void) snprintf(verstr, sizeof (verstr),
2095                     "%llu", cb->cb_version);
2096                 if (cb->cb_lastfs[0] && !same_pool(zhp, cb->cb_lastfs)) {
2097                         /*
2098                          * If they did "zfs upgrade -a", then we could
2099                          * be doing ioctls to different pools.  We need
2100                          * to log this history once to each pool, and bypass
2101                          * the normal history logging that happens in main().
2102                          */
2103                         (void) zpool_log_history(g_zfs, history_str);
2104                         log_history = B_FALSE;
2105                 }
2106                 if (zfs_prop_set(zhp, "version", verstr) == 0)
2107                         cb->cb_numupgraded++;
2108                 else
2109                         cb->cb_numfailed++;
2110                 (void) strcpy(cb->cb_lastfs, zfs_get_name(zhp));
2111         } else if (version > cb->cb_version) {
2112                 /* can't downgrade */
2113                 (void) printf(gettext("%s: can not be downgraded; "
2114                     "it is already at version %u\n"),
2115                     zfs_get_name(zhp), version);
2116                 cb->cb_numfailed++;
2117         } else {
2118                 cb->cb_numsamegraded++;
2119         }
2120         return (0);
2121 }
2122
2123 /*
2124  * zfs upgrade
2125  * zfs upgrade -v
2126  * zfs upgrade [-r] [-V <version>] <-a | filesystem>
2127  */
2128 static int
2129 zfs_do_upgrade(int argc, char **argv)
2130 {
2131         boolean_t all = B_FALSE;
2132         boolean_t showversions = B_FALSE;
2133         int ret = 0;
2134         upgrade_cbdata_t cb = { 0 };
2135         int c;
2136         int flags = ZFS_ITER_ARGS_CAN_BE_PATHS;
2137
2138         /* check options */
2139         while ((c = getopt(argc, argv, "rvV:a")) != -1) {
2140                 switch (c) {
2141                 case 'r':
2142                         flags |= ZFS_ITER_RECURSE;
2143                         break;
2144                 case 'v':
2145                         showversions = B_TRUE;
2146                         break;
2147                 case 'V':
2148                         if (zfs_prop_string_to_index(ZFS_PROP_VERSION,
2149                             optarg, &cb.cb_version) != 0) {
2150                                 (void) fprintf(stderr,
2151                                     gettext("invalid version %s\n"), optarg);
2152                                 usage(B_FALSE);
2153                         }
2154                         break;
2155                 case 'a':
2156                         all = B_TRUE;
2157                         break;
2158                 case '?':
2159                 default:
2160                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2161                             optopt);
2162                         usage(B_FALSE);
2163                 }
2164         }
2165
2166         argc -= optind;
2167         argv += optind;
2168
2169         if ((!all && !argc) && ((flags & ZFS_ITER_RECURSE) | cb.cb_version))
2170                 usage(B_FALSE);
2171         if (showversions && (flags & ZFS_ITER_RECURSE || all ||
2172             cb.cb_version || argc))
2173                 usage(B_FALSE);
2174         if ((all || argc) && (showversions))
2175                 usage(B_FALSE);
2176         if (all && argc)
2177                 usage(B_FALSE);
2178
2179         if (showversions) {
2180                 /* Show info on available versions. */
2181                 (void) printf(gettext("The following filesystem versions are "
2182                     "supported:\n\n"));
2183                 (void) printf(gettext("VER  DESCRIPTION\n"));
2184                 (void) printf("---  -----------------------------------------"
2185                     "---------------\n");
2186                 (void) printf(gettext(" 1   Initial ZFS filesystem version\n"));
2187                 (void) printf(gettext(" 2   Enhanced directory entries\n"));
2188                 (void) printf(gettext(" 3   Case insensitive and filesystem "
2189                     "user identifier (FUID)\n"));
2190                 (void) printf(gettext(" 4   userquota, groupquota "
2191                     "properties\n"));
2192                 (void) printf(gettext(" 5   System attributes\n"));
2193                 (void) printf(gettext("\nFor more information on a particular "
2194                     "version, including supported releases,\n"));
2195                 (void) printf("see the ZFS Administration Guide.\n\n");
2196                 ret = 0;
2197         } else if (argc || all) {
2198                 /* Upgrade filesystems */
2199                 if (cb.cb_version == 0)
2200                         cb.cb_version = ZPL_VERSION;
2201                 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_FILESYSTEM,
2202                     NULL, NULL, 0, upgrade_set_callback, &cb);
2203                 (void) printf(gettext("%llu filesystems upgraded\n"),
2204                     cb.cb_numupgraded);
2205                 if (cb.cb_numsamegraded) {
2206                         (void) printf(gettext("%llu filesystems already at "
2207                             "this version\n"),
2208                             cb.cb_numsamegraded);
2209                 }
2210                 if (cb.cb_numfailed != 0)
2211                         ret = 1;
2212         } else {
2213                 /* List old-version filesytems */
2214                 boolean_t found;
2215                 (void) printf(gettext("This system is currently running "
2216                     "ZFS filesystem version %llu.\n\n"), ZPL_VERSION);
2217
2218                 flags |= ZFS_ITER_RECURSE;
2219                 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
2220                     NULL, NULL, 0, upgrade_list_callback, &cb);
2221
2222                 found = cb.cb_foundone;
2223                 cb.cb_foundone = B_FALSE;
2224                 cb.cb_newer = B_TRUE;
2225
2226                 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
2227                     NULL, NULL, 0, upgrade_list_callback, &cb);
2228
2229                 if (!cb.cb_foundone && !found) {
2230                         (void) printf(gettext("All filesystems are "
2231                             "formatted with the current version.\n"));
2232                 }
2233         }
2234
2235         return (ret);
2236 }
2237
2238 /*
2239  * zfs userspace [-Hinp] [-o field[,...]] [-s field [-s field]...]
2240  *               [-S field [-S field]...] [-t type[,...]] filesystem | snapshot
2241  * zfs groupspace [-Hinp] [-o field[,...]] [-s field [-s field]...]
2242  *                [-S field [-S field]...] [-t type[,...]] filesystem | snapshot
2243  *
2244  *      -H      Scripted mode; elide headers and separate columns by tabs.
2245  *      -i      Translate SID to POSIX ID.
2246  *      -n      Print numeric ID instead of user/group name.
2247  *      -o      Control which fields to display.
2248  *      -p      Use exact (parsable) numeric output.
2249  *      -s      Specify sort columns, descending order.
2250  *      -S      Specify sort columns, ascending order.
2251  *      -t      Control which object types to display.
2252  *
2253  *      Displays space consumed by, and quotas on, each user in the specified
2254  *      filesystem or snapshot.
2255  */
2256
2257 /* us_field_types, us_field_hdr and us_field_names should be kept in sync */
2258 enum us_field_types {
2259         USFIELD_TYPE,
2260         USFIELD_NAME,
2261         USFIELD_USED,
2262         USFIELD_QUOTA
2263 };
2264 static char *us_field_hdr[] = { "TYPE", "NAME", "USED", "QUOTA" };
2265 static char *us_field_names[] = { "type", "name", "used", "quota" };
2266 #define USFIELD_LAST    (sizeof (us_field_names) / sizeof (char *))
2267
2268 #define USTYPE_PSX_GRP  (1 << 0)
2269 #define USTYPE_PSX_USR  (1 << 1)
2270 #define USTYPE_SMB_GRP  (1 << 2)
2271 #define USTYPE_SMB_USR  (1 << 3)
2272 #define USTYPE_ALL      \
2273         (USTYPE_PSX_GRP | USTYPE_PSX_USR | USTYPE_SMB_GRP | USTYPE_SMB_USR)
2274
2275 static int us_type_bits[] = {
2276         USTYPE_PSX_GRP,
2277         USTYPE_PSX_USR,
2278         USTYPE_SMB_GRP,
2279         USTYPE_SMB_USR,
2280         USTYPE_ALL
2281 };
2282 static char *us_type_names[] = { "posixgroup", "posixuser", "smbgroup",
2283         "smbuser", "all" };
2284
2285 typedef struct us_node {
2286         nvlist_t        *usn_nvl;
2287         uu_avl_node_t   usn_avlnode;
2288         uu_list_node_t  usn_listnode;
2289 } us_node_t;
2290
2291 typedef struct us_cbdata {
2292         nvlist_t        **cb_nvlp;
2293         uu_avl_pool_t   *cb_avl_pool;
2294         uu_avl_t        *cb_avl;
2295         boolean_t       cb_numname;
2296         boolean_t       cb_nicenum;
2297         boolean_t       cb_sid2posix;
2298         zfs_userquota_prop_t cb_prop;
2299         zfs_sort_column_t *cb_sortcol;
2300         size_t          cb_width[USFIELD_LAST];
2301 } us_cbdata_t;
2302
2303 static boolean_t us_populated = B_FALSE;
2304
2305 typedef struct {
2306         zfs_sort_column_t *si_sortcol;
2307         boolean_t       si_numname;
2308 } us_sort_info_t;
2309
2310 static int
2311 us_field_index(char *field)
2312 {
2313         int i;
2314
2315         for (i = 0; i < USFIELD_LAST; i++) {
2316                 if (strcmp(field, us_field_names[i]) == 0)
2317                         return (i);
2318         }
2319
2320         return (-1);
2321 }
2322
2323 static int
2324 us_compare(const void *larg, const void *rarg, void *unused)
2325 {
2326         const us_node_t *l = larg;
2327         const us_node_t *r = rarg;
2328         us_sort_info_t *si = (us_sort_info_t *)unused;
2329         zfs_sort_column_t *sortcol = si->si_sortcol;
2330         boolean_t numname = si->si_numname;
2331         nvlist_t *lnvl = l->usn_nvl;
2332         nvlist_t *rnvl = r->usn_nvl;
2333         int rc = 0;
2334         boolean_t lvb, rvb;
2335
2336         for (; sortcol != NULL; sortcol = sortcol->sc_next) {
2337                 char *lvstr = "";
2338                 char *rvstr = "";
2339                 uint32_t lv32 = 0;
2340                 uint32_t rv32 = 0;
2341                 uint64_t lv64 = 0;
2342                 uint64_t rv64 = 0;
2343                 zfs_prop_t prop = sortcol->sc_prop;
2344                 const char *propname = NULL;
2345                 boolean_t reverse = sortcol->sc_reverse;
2346
2347                 switch (prop) {
2348                 case ZFS_PROP_TYPE:
2349                         propname = "type";
2350                         (void) nvlist_lookup_uint32(lnvl, propname, &lv32);
2351                         (void) nvlist_lookup_uint32(rnvl, propname, &rv32);
2352                         if (rv32 != lv32)
2353                                 rc = (rv32 < lv32) ? 1 : -1;
2354                         break;
2355                 case ZFS_PROP_NAME:
2356                         propname = "name";
2357                         if (numname) {
2358                                 (void) nvlist_lookup_uint64(lnvl, propname,
2359                                     &lv64);
2360                                 (void) nvlist_lookup_uint64(rnvl, propname,
2361                                     &rv64);
2362                                 if (rv64 != lv64)
2363                                         rc = (rv64 < lv64) ? 1 : -1;
2364                         } else {
2365                                 (void) nvlist_lookup_string(lnvl, propname,
2366                                     &lvstr);
2367                                 (void) nvlist_lookup_string(rnvl, propname,
2368                                     &rvstr);
2369                                 rc = strcmp(lvstr, rvstr);
2370                         }
2371                         break;
2372                 case ZFS_PROP_USED:
2373                 case ZFS_PROP_QUOTA:
2374                         if (!us_populated)
2375                                 break;
2376                         if (prop == ZFS_PROP_USED)
2377                                 propname = "used";
2378                         else
2379                                 propname = "quota";
2380                         (void) nvlist_lookup_uint64(lnvl, propname, &lv64);
2381                         (void) nvlist_lookup_uint64(rnvl, propname, &rv64);
2382                         if (rv64 != lv64)
2383                                 rc = (rv64 < lv64) ? 1 : -1;
2384                         break;
2385
2386                 default:
2387                         break;
2388                 }
2389
2390                 if (rc != 0) {
2391                         if (rc < 0)
2392                                 return (reverse ? 1 : -1);
2393                         else
2394                                 return (reverse ? -1 : 1);
2395                 }
2396         }
2397
2398         /*
2399          * If entries still seem to be the same, check if they are of the same
2400          * type (smbentity is added only if we are doing SID to POSIX ID
2401          * translation where we can have duplicate type/name combinations).
2402          */
2403         if (nvlist_lookup_boolean_value(lnvl, "smbentity", &lvb) == 0 &&
2404             nvlist_lookup_boolean_value(rnvl, "smbentity", &rvb) == 0 &&
2405             lvb != rvb)
2406                 return (lvb < rvb ? -1 : 1);
2407
2408         return (0);
2409 }
2410
2411 static inline const char *
2412 us_type2str(unsigned field_type)
2413 {
2414         switch (field_type) {
2415         case USTYPE_PSX_USR:
2416                 return ("POSIX User");
2417         case USTYPE_PSX_GRP:
2418                 return ("POSIX Group");
2419         case USTYPE_SMB_USR:
2420                 return ("SMB User");
2421         case USTYPE_SMB_GRP:
2422                 return ("SMB Group");
2423         default:
2424                 return ("Undefined");
2425         }
2426 }
2427
2428 static int
2429 userspace_cb(void *arg, const char *domain, uid_t rid, uint64_t space)
2430 {
2431         us_cbdata_t *cb = (us_cbdata_t *)arg;
2432         zfs_userquota_prop_t prop = cb->cb_prop;
2433         char *name = NULL;
2434         char *propname;
2435         char sizebuf[32];
2436         us_node_t *node;
2437         uu_avl_pool_t *avl_pool = cb->cb_avl_pool;
2438         uu_avl_t *avl = cb->cb_avl;
2439         uu_avl_index_t idx;
2440         nvlist_t *props;
2441         us_node_t *n;
2442         zfs_sort_column_t *sortcol = cb->cb_sortcol;
2443         unsigned type = 0;
2444         const char *typestr;
2445         size_t namelen;
2446         size_t typelen;
2447         size_t sizelen;
2448         int typeidx, nameidx, sizeidx;
2449         us_sort_info_t sortinfo = { sortcol, cb->cb_numname };
2450         boolean_t smbentity = B_FALSE;
2451
2452         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
2453                 nomem();
2454         node = safe_malloc(sizeof (us_node_t));
2455         uu_avl_node_init(node, &node->usn_avlnode, avl_pool);
2456         node->usn_nvl = props;
2457
2458         if (domain != NULL && domain[0] != '\0') {
2459                 /* SMB */
2460                 char sid[MAXNAMELEN + 32];
2461                 uid_t id;
2462 #ifdef illumos
2463                 int err;
2464                 int flag = IDMAP_REQ_FLG_USE_CACHE;
2465 #endif
2466
2467                 smbentity = B_TRUE;
2468
2469                 (void) snprintf(sid, sizeof (sid), "%s-%u", domain, rid);
2470
2471                 if (prop == ZFS_PROP_GROUPUSED || prop == ZFS_PROP_GROUPQUOTA) {
2472                         type = USTYPE_SMB_GRP;
2473 #ifdef illumos
2474                         err = sid_to_id(sid, B_FALSE, &id);
2475 #endif
2476                 } else {
2477                         type = USTYPE_SMB_USR;
2478 #ifdef illumos
2479                         err = sid_to_id(sid, B_TRUE, &id);
2480 #endif
2481                 }
2482
2483 #ifdef illumos
2484                 if (err == 0) {
2485                         rid = id;
2486                         if (!cb->cb_sid2posix) {
2487                                 if (type == USTYPE_SMB_USR) {
2488                                         (void) idmap_getwinnamebyuid(rid, flag,
2489                                             &name, NULL);
2490                                 } else {
2491                                         (void) idmap_getwinnamebygid(rid, flag,
2492                                             &name, NULL);
2493                                 }
2494                                 if (name == NULL)
2495                                         name = sid;
2496                         }
2497                 }
2498 #endif
2499         }
2500
2501         if (cb->cb_sid2posix || domain == NULL || domain[0] == '\0') {
2502                 /* POSIX or -i */
2503                 if (prop == ZFS_PROP_GROUPUSED || prop == ZFS_PROP_GROUPQUOTA) {
2504                         type = USTYPE_PSX_GRP;
2505                         if (!cb->cb_numname) {
2506                                 struct group *g;
2507
2508                                 if ((g = getgrgid(rid)) != NULL)
2509                                         name = g->gr_name;
2510                         }
2511                 } else {
2512                         type = USTYPE_PSX_USR;
2513                         if (!cb->cb_numname) {
2514                                 struct passwd *p;
2515
2516                                 if ((p = getpwuid(rid)) != NULL)
2517                                         name = p->pw_name;
2518                         }
2519                 }
2520         }
2521
2522         /*
2523          * Make sure that the type/name combination is unique when doing
2524          * SID to POSIX ID translation (hence changing the type from SMB to
2525          * POSIX).
2526          */
2527         if (cb->cb_sid2posix &&
2528             nvlist_add_boolean_value(props, "smbentity", smbentity) != 0)
2529                 nomem();
2530
2531         /* Calculate/update width of TYPE field */
2532         typestr = us_type2str(type);
2533         typelen = strlen(gettext(typestr));
2534         typeidx = us_field_index("type");
2535         if (typelen > cb->cb_width[typeidx])
2536                 cb->cb_width[typeidx] = typelen;
2537         if (nvlist_add_uint32(props, "type", type) != 0)
2538                 nomem();
2539
2540         /* Calculate/update width of NAME field */
2541         if ((cb->cb_numname && cb->cb_sid2posix) || name == NULL) {
2542                 if (nvlist_add_uint64(props, "name", rid) != 0)
2543                         nomem();
2544                 namelen = snprintf(NULL, 0, "%u", rid);
2545         } else {
2546                 if (nvlist_add_string(props, "name", name) != 0)
2547                         nomem();
2548                 namelen = strlen(name);
2549         }
2550         nameidx = us_field_index("name");
2551         if (namelen > cb->cb_width[nameidx])
2552                 cb->cb_width[nameidx] = namelen;
2553
2554         /*
2555          * Check if this type/name combination is in the list and update it;
2556          * otherwise add new node to the list.
2557          */
2558         if ((n = uu_avl_find(avl, node, &sortinfo, &idx)) == NULL) {
2559                 uu_avl_insert(avl, node, idx);
2560         } else {
2561                 nvlist_free(props);
2562                 free(node);
2563                 node = n;
2564                 props = node->usn_nvl;
2565         }
2566
2567         /* Calculate/update width of USED/QUOTA fields */
2568         if (cb->cb_nicenum)
2569                 zfs_nicenum(space, sizebuf, sizeof (sizebuf));
2570         else
2571                 (void) snprintf(sizebuf, sizeof (sizebuf), "%llu", space);
2572         sizelen = strlen(sizebuf);
2573         if (prop == ZFS_PROP_USERUSED || prop == ZFS_PROP_GROUPUSED) {
2574                 propname = "used";
2575                 if (!nvlist_exists(props, "quota"))
2576                         (void) nvlist_add_uint64(props, "quota", 0);
2577         } else {
2578                 propname = "quota";
2579                 if (!nvlist_exists(props, "used"))
2580                         (void) nvlist_add_uint64(props, "used", 0);
2581         }
2582         sizeidx = us_field_index(propname);
2583         if (sizelen > cb->cb_width[sizeidx])
2584                 cb->cb_width[sizeidx] = sizelen;
2585
2586         if (nvlist_add_uint64(props, propname, space) != 0)
2587                 nomem();
2588
2589         return (0);
2590 }
2591
2592 static void
2593 print_us_node(boolean_t scripted, boolean_t parsable, int *fields, int types,
2594     size_t *width, us_node_t *node)
2595 {
2596         nvlist_t *nvl = node->usn_nvl;
2597         char valstr[MAXNAMELEN];
2598         boolean_t first = B_TRUE;
2599         int cfield = 0;
2600         int field;
2601         uint32_t ustype;
2602
2603         /* Check type */
2604         (void) nvlist_lookup_uint32(nvl, "type", &ustype);
2605         if (!(ustype & types))
2606                 return;
2607
2608         while ((field = fields[cfield]) != USFIELD_LAST) {
2609                 nvpair_t *nvp = NULL;
2610                 data_type_t type;
2611                 uint32_t val32;
2612                 uint64_t val64;
2613                 char *strval = NULL;
2614
2615                 while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
2616                         if (strcmp(nvpair_name(nvp),
2617                             us_field_names[field]) == 0)
2618                                 break;
2619                 }
2620
2621                 type = nvpair_type(nvp);
2622                 switch (type) {
2623                 case DATA_TYPE_UINT32:
2624                         (void) nvpair_value_uint32(nvp, &val32);
2625                         break;
2626                 case DATA_TYPE_UINT64:
2627                         (void) nvpair_value_uint64(nvp, &val64);
2628                         break;
2629                 case DATA_TYPE_STRING:
2630                         (void) nvpair_value_string(nvp, &strval);
2631                         break;
2632                 default:
2633                         (void) fprintf(stderr, "invalid data type\n");
2634                 }
2635
2636                 switch (field) {
2637                 case USFIELD_TYPE:
2638                         strval = (char *)us_type2str(val32);
2639                         break;
2640                 case USFIELD_NAME:
2641                         if (type == DATA_TYPE_UINT64) {
2642                                 (void) sprintf(valstr, "%llu", val64);
2643                                 strval = valstr;
2644                         }
2645                         break;
2646                 case USFIELD_USED:
2647                 case USFIELD_QUOTA:
2648                         if (type == DATA_TYPE_UINT64) {
2649                                 if (parsable) {
2650                                         (void) sprintf(valstr, "%llu", val64);
2651                                 } else {
2652                                         zfs_nicenum(val64, valstr,
2653                                             sizeof (valstr));
2654                                 }
2655                                 if (field == USFIELD_QUOTA &&
2656                                     strcmp(valstr, "0") == 0)
2657                                         strval = "none";
2658                                 else
2659                                         strval = valstr;
2660                         }
2661                         break;
2662                 }
2663
2664                 if (!first) {
2665                         if (scripted)
2666                                 (void) printf("\t");
2667                         else
2668                                 (void) printf("  ");
2669                 }
2670                 if (scripted)
2671                         (void) printf("%s", strval);
2672                 else if (field == USFIELD_TYPE || field == USFIELD_NAME)
2673                         (void) printf("%-*s", width[field], strval);
2674                 else
2675                         (void) printf("%*s", width[field], strval);
2676
2677                 first = B_FALSE;
2678                 cfield++;
2679         }
2680
2681         (void) printf("\n");
2682 }
2683
2684 static void
2685 print_us(boolean_t scripted, boolean_t parsable, int *fields, int types,
2686     size_t *width, boolean_t rmnode, uu_avl_t *avl)
2687 {
2688         us_node_t *node;
2689         const char *col;
2690         int cfield = 0;
2691         int field;
2692
2693         if (!scripted) {
2694                 boolean_t first = B_TRUE;
2695
2696                 while ((field = fields[cfield]) != USFIELD_LAST) {
2697                         col = gettext(us_field_hdr[field]);
2698                         if (field == USFIELD_TYPE || field == USFIELD_NAME) {
2699                                 (void) printf(first ? "%-*s" : "  %-*s",
2700                                     width[field], col);
2701                         } else {
2702                                 (void) printf(first ? "%*s" : "  %*s",
2703                                     width[field], col);
2704                         }
2705                         first = B_FALSE;
2706                         cfield++;
2707                 }
2708                 (void) printf("\n");
2709         }
2710
2711         for (node = uu_avl_first(avl); node; node = uu_avl_next(avl, node)) {
2712                 print_us_node(scripted, parsable, fields, types, width, node);
2713                 if (rmnode)
2714                         nvlist_free(node->usn_nvl);
2715         }
2716 }
2717
2718 static int
2719 zfs_do_userspace(int argc, char **argv)
2720 {
2721         zfs_handle_t *zhp;
2722         zfs_userquota_prop_t p;
2723
2724         uu_avl_pool_t *avl_pool;
2725         uu_avl_t *avl_tree;
2726         uu_avl_walk_t *walk;
2727         char *delim;
2728         char deffields[] = "type,name,used,quota";
2729         char *ofield = NULL;
2730         char *tfield = NULL;
2731         int cfield = 0;
2732         int fields[256];
2733         int i;
2734         boolean_t scripted = B_FALSE;
2735         boolean_t prtnum = B_FALSE;
2736         boolean_t parsable = B_FALSE;
2737         boolean_t sid2posix = B_FALSE;
2738         int ret = 0;
2739         int c;
2740         zfs_sort_column_t *sortcol = NULL;
2741         int types = USTYPE_PSX_USR | USTYPE_SMB_USR;
2742         us_cbdata_t cb;
2743         us_node_t *node;
2744         us_node_t *rmnode;
2745         uu_list_pool_t *listpool;
2746         uu_list_t *list;
2747         uu_avl_index_t idx = 0;
2748         uu_list_index_t idx2 = 0;
2749
2750         if (argc < 2)
2751                 usage(B_FALSE);
2752
2753         if (strcmp(argv[0], "groupspace") == 0)
2754                 /* Toggle default group types */
2755                 types = USTYPE_PSX_GRP | USTYPE_SMB_GRP;
2756
2757         while ((c = getopt(argc, argv, "nHpo:s:S:t:i")) != -1) {
2758                 switch (c) {
2759                 case 'n':
2760                         prtnum = B_TRUE;
2761                         break;
2762                 case 'H':
2763                         scripted = B_TRUE;
2764                         break;
2765                 case 'p':
2766                         parsable = B_TRUE;
2767                         break;
2768                 case 'o':
2769                         ofield = optarg;
2770                         break;
2771                 case 's':
2772                 case 'S':
2773                         if (zfs_add_sort_column(&sortcol, optarg,
2774                             c == 's' ? B_FALSE : B_TRUE) != 0) {
2775                                 (void) fprintf(stderr,
2776                                     gettext("invalid field '%s'\n"), optarg);
2777                                 usage(B_FALSE);
2778                         }
2779                         break;
2780                 case 't':
2781                         tfield = optarg;
2782                         break;
2783                 case 'i':
2784                         sid2posix = B_TRUE;
2785                         break;
2786                 case ':':
2787                         (void) fprintf(stderr, gettext("missing argument for "
2788                             "'%c' option\n"), optopt);
2789                         usage(B_FALSE);
2790                         break;
2791                 case '?':
2792                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2793                             optopt);
2794                         usage(B_FALSE);
2795                 }
2796         }
2797
2798         argc -= optind;
2799         argv += optind;
2800
2801         if (argc < 1) {
2802                 (void) fprintf(stderr, gettext("missing dataset name\n"));
2803                 usage(B_FALSE);
2804         }
2805         if (argc > 1) {
2806                 (void) fprintf(stderr, gettext("too many arguments\n"));
2807                 usage(B_FALSE);
2808         }
2809
2810         /* Use default output fields if not specified using -o */
2811         if (ofield == NULL)
2812                 ofield = deffields;
2813         do {
2814                 if ((delim = strchr(ofield, ',')) != NULL)
2815                         *delim = '\0';
2816                 if ((fields[cfield++] = us_field_index(ofield)) == -1) {
2817                         (void) fprintf(stderr, gettext("invalid type '%s' "
2818                             "for -o option\n"), ofield);
2819                         return (-1);
2820                 }
2821                 if (delim != NULL)
2822                         ofield = delim + 1;
2823         } while (delim != NULL);
2824         fields[cfield] = USFIELD_LAST;
2825
2826         /* Override output types (-t option) */
2827         if (tfield != NULL) {
2828                 types = 0;
2829
2830                 do {
2831                         boolean_t found = B_FALSE;
2832
2833                         if ((delim = strchr(tfield, ',')) != NULL)
2834                                 *delim = '\0';
2835                         for (i = 0; i < sizeof (us_type_bits) / sizeof (int);
2836                             i++) {
2837                                 if (strcmp(tfield, us_type_names[i]) == 0) {
2838                                         found = B_TRUE;
2839                                         types |= us_type_bits[i];
2840                                         break;
2841                                 }
2842                         }
2843                         if (!found) {
2844                                 (void) fprintf(stderr, gettext("invalid type "
2845                                     "'%s' for -t option\n"), tfield);
2846                                 return (-1);
2847                         }
2848                         if (delim != NULL)
2849                                 tfield = delim + 1;
2850                 } while (delim != NULL);
2851         }
2852
2853         if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL)
2854                 return (1);
2855
2856         if ((avl_pool = uu_avl_pool_create("us_avl_pool", sizeof (us_node_t),
2857             offsetof(us_node_t, usn_avlnode), us_compare, UU_DEFAULT)) == NULL)
2858                 nomem();
2859         if ((avl_tree = uu_avl_create(avl_pool, NULL, UU_DEFAULT)) == NULL)
2860                 nomem();
2861
2862         /* Always add default sorting columns */
2863         (void) zfs_add_sort_column(&sortcol, "type", B_FALSE);
2864         (void) zfs_add_sort_column(&sortcol, "name", B_FALSE);
2865
2866         cb.cb_sortcol = sortcol;
2867         cb.cb_numname = prtnum;
2868         cb.cb_nicenum = !parsable;
2869         cb.cb_avl_pool = avl_pool;
2870         cb.cb_avl = avl_tree;
2871         cb.cb_sid2posix = sid2posix;
2872
2873         for (i = 0; i < USFIELD_LAST; i++)
2874                 cb.cb_width[i] = strlen(gettext(us_field_hdr[i]));
2875
2876         for (p = 0; p < ZFS_NUM_USERQUOTA_PROPS; p++) {
2877                 if (((p == ZFS_PROP_USERUSED || p == ZFS_PROP_USERQUOTA) &&
2878                     !(types & (USTYPE_PSX_USR | USTYPE_SMB_USR))) ||
2879                     ((p == ZFS_PROP_GROUPUSED || p == ZFS_PROP_GROUPQUOTA) &&
2880                     !(types & (USTYPE_PSX_GRP | USTYPE_SMB_GRP))))
2881                         continue;
2882                 cb.cb_prop = p;
2883                 if ((ret = zfs_userspace(zhp, p, userspace_cb, &cb)) != 0)
2884                         return (ret);
2885         }
2886
2887         /* Sort the list */
2888         if ((node = uu_avl_first(avl_tree)) == NULL)
2889                 return (0);
2890
2891         us_populated = B_TRUE;
2892
2893         listpool = uu_list_pool_create("tmplist", sizeof (us_node_t),
2894             offsetof(us_node_t, usn_listnode), NULL, UU_DEFAULT);
2895         list = uu_list_create(listpool, NULL, UU_DEFAULT);
2896         uu_list_node_init(node, &node->usn_listnode, listpool);
2897
2898         while (node != NULL) {
2899                 rmnode = node;
2900                 node = uu_avl_next(avl_tree, node);
2901                 uu_avl_remove(avl_tree, rmnode);
2902                 if (uu_list_find(list, rmnode, NULL, &idx2) == NULL)
2903                         uu_list_insert(list, rmnode, idx2);
2904         }
2905
2906         for (node = uu_list_first(list); node != NULL;
2907             node = uu_list_next(list, node)) {
2908                 us_sort_info_t sortinfo = { sortcol, cb.cb_numname };
2909
2910                 if (uu_avl_find(avl_tree, node, &sortinfo, &idx) == NULL)
2911                         uu_avl_insert(avl_tree, node, idx);
2912         }
2913
2914         uu_list_destroy(list);
2915         uu_list_pool_destroy(listpool);
2916
2917         /* Print and free node nvlist memory */
2918         print_us(scripted, parsable, fields, types, cb.cb_width, B_TRUE,
2919             cb.cb_avl);
2920
2921         zfs_free_sort_columns(sortcol);
2922
2923         /* Clean up the AVL tree */
2924         if ((walk = uu_avl_walk_start(cb.cb_avl, UU_WALK_ROBUST)) == NULL)
2925                 nomem();
2926
2927         while ((node = uu_avl_walk_next(walk)) != NULL) {
2928                 uu_avl_remove(cb.cb_avl, node);
2929                 free(node);
2930         }
2931
2932         uu_avl_walk_end(walk);
2933         uu_avl_destroy(avl_tree);
2934         uu_avl_pool_destroy(avl_pool);
2935
2936         return (ret);
2937 }
2938
2939 /*
2940  * list [-Hp][-r|-d max] [-o property[,...]] [-s property] ... [-S property] ...
2941  *      [-t type[,...]] [filesystem|volume|snapshot] ...
2942  *
2943  *      -H      Scripted mode; elide headers and separate columns by tabs.
2944  *      -p      Display values in parsable (literal) format.
2945  *      -r      Recurse over all children.
2946  *      -d      Limit recursion by depth.
2947  *      -o      Control which fields to display.
2948  *      -s      Specify sort columns, descending order.
2949  *      -S      Specify sort columns, ascending order.
2950  *      -t      Control which object types to display.
2951  *
2952  * When given no arguments, list all filesystems in the system.
2953  * Otherwise, list the specified datasets, optionally recursing down them if
2954  * '-r' is specified.
2955  */
2956 typedef struct list_cbdata {
2957         boolean_t       cb_first;
2958         boolean_t       cb_literal;
2959         boolean_t       cb_scripted;
2960         zprop_list_t    *cb_proplist;
2961 } list_cbdata_t;
2962
2963 /*
2964  * Given a list of columns to display, output appropriate headers for each one.
2965  */
2966 static void
2967 print_header(list_cbdata_t *cb)
2968 {
2969         zprop_list_t *pl = cb->cb_proplist;
2970         char headerbuf[ZFS_MAXPROPLEN];
2971         const char *header;
2972         int i;
2973         boolean_t first = B_TRUE;
2974         boolean_t right_justify;
2975
2976         for (; pl != NULL; pl = pl->pl_next) {
2977                 if (!first) {
2978                         (void) printf("  ");
2979                 } else {
2980                         first = B_FALSE;
2981                 }
2982
2983                 right_justify = B_FALSE;
2984                 if (pl->pl_prop != ZPROP_INVAL) {
2985                         header = zfs_prop_column_name(pl->pl_prop);
2986                         right_justify = zfs_prop_align_right(pl->pl_prop);
2987                 } else {
2988                         for (i = 0; pl->pl_user_prop[i] != '\0'; i++)
2989                                 headerbuf[i] = toupper(pl->pl_user_prop[i]);
2990                         headerbuf[i] = '\0';
2991                         header = headerbuf;
2992                 }
2993
2994                 if (pl->pl_next == NULL && !right_justify)
2995                         (void) printf("%s", header);
2996                 else if (right_justify)
2997                         (void) printf("%*s", pl->pl_width, header);
2998                 else
2999                         (void) printf("%-*s", pl->pl_width, header);
3000         }
3001
3002         (void) printf("\n");
3003 }
3004
3005 /*
3006  * Given a dataset and a list of fields, print out all the properties according
3007  * to the described layout.
3008  */
3009 static void
3010 print_dataset(zfs_handle_t *zhp, list_cbdata_t *cb)
3011 {
3012         zprop_list_t *pl = cb->cb_proplist;
3013         boolean_t first = B_TRUE;
3014         char property[ZFS_MAXPROPLEN];
3015         nvlist_t *userprops = zfs_get_user_props(zhp);
3016         nvlist_t *propval;
3017         char *propstr;
3018         boolean_t right_justify;
3019
3020         for (; pl != NULL; pl = pl->pl_next) {
3021                 if (!first) {
3022                         if (cb->cb_scripted)
3023                                 (void) printf("\t");
3024                         else
3025                                 (void) printf("  ");
3026                 } else {
3027                         first = B_FALSE;
3028                 }
3029
3030                 if (pl->pl_prop == ZFS_PROP_NAME) {
3031                         (void) strlcpy(property, zfs_get_name(zhp),
3032                             sizeof (property));
3033                         propstr = property;
3034                         right_justify = zfs_prop_align_right(pl->pl_prop);
3035                 } else if (pl->pl_prop != ZPROP_INVAL) {
3036                         if (zfs_prop_get(zhp, pl->pl_prop, property,
3037                             sizeof (property), NULL, NULL, 0,
3038                             cb->cb_literal) != 0)
3039                                 propstr = "-";
3040                         else
3041                                 propstr = property;
3042                         right_justify = zfs_prop_align_right(pl->pl_prop);
3043                 } else if (zfs_prop_userquota(pl->pl_user_prop)) {
3044                         if (zfs_prop_get_userquota(zhp, pl->pl_user_prop,
3045                             property, sizeof (property), cb->cb_literal) != 0)
3046                                 propstr = "-";
3047                         else
3048                                 propstr = property;
3049                         right_justify = B_TRUE;
3050                 } else if (zfs_prop_written(pl->pl_user_prop)) {
3051                         if (zfs_prop_get_written(zhp, pl->pl_user_prop,
3052                             property, sizeof (property), cb->cb_literal) != 0)
3053                                 propstr = "-";
3054                         else
3055                                 propstr = property;
3056                         right_justify = B_TRUE;
3057                 } else {
3058                         if (nvlist_lookup_nvlist(userprops,
3059                             pl->pl_user_prop, &propval) != 0)
3060                                 propstr = "-";
3061                         else
3062                                 verify(nvlist_lookup_string(propval,
3063                                     ZPROP_VALUE, &propstr) == 0);
3064                         right_justify = B_FALSE;
3065                 }
3066
3067                 /*
3068                  * If this is being called in scripted mode, or if this is the
3069                  * last column and it is left-justified, don't include a width
3070                  * format specifier.
3071                  */
3072                 if (cb->cb_scripted || (pl->pl_next == NULL && !right_justify))
3073                         (void) printf("%s", propstr);
3074                 else if (right_justify)
3075                         (void) printf("%*s", pl->pl_width, propstr);
3076                 else
3077                         (void) printf("%-*s", pl->pl_width, propstr);
3078         }
3079
3080         (void) printf("\n");
3081 }
3082
3083 /*
3084  * Generic callback function to list a dataset or snapshot.
3085  */
3086 static int
3087 list_callback(zfs_handle_t *zhp, void *data)
3088 {
3089         list_cbdata_t *cbp = data;
3090
3091         if (cbp->cb_first) {
3092                 if (!cbp->cb_scripted)
3093                         print_header(cbp);
3094                 cbp->cb_first = B_FALSE;
3095         }
3096
3097         print_dataset(zhp, cbp);
3098
3099         return (0);
3100 }
3101
3102 static int
3103 zfs_do_list(int argc, char **argv)
3104 {
3105         int c;
3106         static char default_fields[] =
3107             "name,used,available,referenced,mountpoint";
3108         int types = ZFS_TYPE_DATASET;
3109         boolean_t types_specified = B_FALSE;
3110         char *fields = NULL;
3111         list_cbdata_t cb = { 0 };
3112         char *value;
3113         int limit = 0;
3114         int ret = 0;
3115         zfs_sort_column_t *sortcol = NULL;
3116         int flags = ZFS_ITER_PROP_LISTSNAPS | ZFS_ITER_ARGS_CAN_BE_PATHS;
3117
3118         /* check options */
3119         while ((c = getopt(argc, argv, "HS:d:o:prs:t:")) != -1) {
3120                 switch (c) {
3121                 case 'o':
3122                         fields = optarg;
3123                         break;
3124                 case 'p':
3125                         cb.cb_literal = B_TRUE;
3126                         flags |= ZFS_ITER_LITERAL_PROPS;
3127                         break;
3128                 case 'd':
3129                         limit = parse_depth(optarg, &flags);
3130                         break;
3131                 case 'r':
3132                         flags |= ZFS_ITER_RECURSE;
3133                         break;
3134                 case 'H':
3135                         cb.cb_scripted = B_TRUE;
3136                         break;
3137                 case 's':
3138                         if (zfs_add_sort_column(&sortcol, optarg,
3139                             B_FALSE) != 0) {
3140                                 (void) fprintf(stderr,
3141                                     gettext("invalid property '%s'\n"), optarg);
3142                                 usage(B_FALSE);
3143                         }
3144                         break;
3145                 case 'S':
3146                         if (zfs_add_sort_column(&sortcol, optarg,
3147                             B_TRUE) != 0) {
3148                                 (void) fprintf(stderr,
3149                                     gettext("invalid property '%s'\n"), optarg);
3150                                 usage(B_FALSE);
3151                         }
3152                         break;
3153                 case 't':
3154                         types = 0;
3155                         types_specified = B_TRUE;
3156                         flags &= ~ZFS_ITER_PROP_LISTSNAPS;
3157                         while (*optarg != '\0') {
3158                                 static char *type_subopts[] = { "filesystem",
3159                                     "volume", "snapshot", "snap", "bookmark",
3160                                     "all", NULL };
3161
3162                                 switch (getsubopt(&optarg, type_subopts,
3163                                     &value)) {
3164                                 case 0:
3165                                         types |= ZFS_TYPE_FILESYSTEM;
3166                                         break;
3167                                 case 1:
3168                                         types |= ZFS_TYPE_VOLUME;
3169                                         break;
3170                                 case 2:
3171                                 case 3:
3172                                         types |= ZFS_TYPE_SNAPSHOT;
3173                                         break;
3174                                 case 4:
3175                                         types |= ZFS_TYPE_BOOKMARK;
3176                                         break;
3177                                 case 5:
3178                                         types = ZFS_TYPE_DATASET |
3179                                             ZFS_TYPE_BOOKMARK;
3180                                         break;
3181                                 default:
3182                                         (void) fprintf(stderr,
3183                                             gettext("invalid type '%s'\n"),
3184                                             suboptarg);
3185                                         usage(B_FALSE);
3186                                 }
3187                         }
3188                         break;
3189                 case ':':
3190                         (void) fprintf(stderr, gettext("missing argument for "
3191                             "'%c' option\n"), optopt);
3192                         usage(B_FALSE);
3193                         break;
3194                 case '?':
3195                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3196                             optopt);
3197                         usage(B_FALSE);
3198                 }
3199         }
3200
3201         argc -= optind;
3202         argv += optind;
3203
3204         if (fields == NULL)
3205                 fields = default_fields;
3206
3207         /*
3208          * If we are only going to list snapshot names and sort by name,
3209          * then we can use faster version.
3210          */
3211         if (strcmp(fields, "name") == 0 && zfs_sort_only_by_name(sortcol))
3212                 flags |= ZFS_ITER_SIMPLE;
3213
3214         /*
3215          * If "-o space" and no types were specified, don't display snapshots.
3216          */
3217         if (strcmp(fields, "space") == 0 && types_specified == B_FALSE)
3218                 types &= ~ZFS_TYPE_SNAPSHOT;
3219
3220         /*
3221          * If the user specifies '-o all', the zprop_get_list() doesn't
3222          * normally include the name of the dataset.  For 'zfs list', we always
3223          * want this property to be first.
3224          */
3225         if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
3226             != 0)
3227                 usage(B_FALSE);
3228
3229         cb.cb_first = B_TRUE;
3230
3231         ret = zfs_for_each(argc, argv, flags, types, sortcol, &cb.cb_proplist,
3232             limit, list_callback, &cb);
3233
3234         zprop_free_list(cb.cb_proplist);
3235         zfs_free_sort_columns(sortcol);
3236
3237         if (ret == 0 && cb.cb_first && !cb.cb_scripted)
3238                 (void) printf(gettext("no datasets available\n"));
3239
3240         return (ret);
3241 }
3242
3243 /*
3244  * zfs rename [-f] <fs | snap | vol> <fs | snap | vol>
3245  * zfs rename [-f] -p <fs | vol> <fs | vol>
3246  * zfs rename -r <snap> <snap>
3247  * zfs rename -u [-p] <fs> <fs>
3248  *
3249  * Renames the given dataset to another of the same type.
3250  *
3251  * The '-p' flag creates all the non-existing ancestors of the target first.
3252  */
3253 /* ARGSUSED */
3254 static int
3255 zfs_do_rename(int argc, char **argv)
3256 {
3257         zfs_handle_t *zhp;
3258         renameflags_t flags = { 0 };
3259         int c;
3260         int ret = 0;
3261         int types;
3262         boolean_t parents = B_FALSE;
3263         char *snapshot = NULL;
3264
3265         /* check options */
3266         while ((c = getopt(argc, argv, "fpru")) != -1) {
3267                 switch (c) {
3268                 case 'p':
3269                         parents = B_TRUE;
3270                         break;
3271                 case 'r':
3272                         flags.recurse = B_TRUE;
3273                         break;
3274                 case 'u':
3275                         flags.nounmount = B_TRUE;
3276                         break;
3277                 case 'f':
3278                         flags.forceunmount = B_TRUE;
3279                         break;
3280                 case '?':
3281                 default:
3282                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3283                             optopt);
3284                         usage(B_FALSE);
3285                 }
3286         }
3287
3288         argc -= optind;
3289         argv += optind;
3290
3291         /* check number of arguments */
3292         if (argc < 1) {
3293                 (void) fprintf(stderr, gettext("missing source dataset "
3294                     "argument\n"));
3295                 usage(B_FALSE);
3296         }
3297         if (argc < 2) {
3298                 (void) fprintf(stderr, gettext("missing target dataset "
3299                     "argument\n"));
3300                 usage(B_FALSE);
3301         }
3302         if (argc > 2) {
3303                 (void) fprintf(stderr, gettext("too many arguments\n"));
3304                 usage(B_FALSE);
3305         }
3306
3307         if (flags.recurse && parents) {
3308                 (void) fprintf(stderr, gettext("-p and -r options are mutually "
3309                     "exclusive\n"));
3310                 usage(B_FALSE);
3311         }
3312
3313         if (flags.recurse && strchr(argv[0], '@') == 0) {
3314                 (void) fprintf(stderr, gettext("source dataset for recursive "
3315                     "rename must be a snapshot\n"));
3316                 usage(B_FALSE);
3317         }
3318
3319         if (flags.nounmount && parents) {
3320                 (void) fprintf(stderr, gettext("-u and -p options are mutually "
3321                     "exclusive\n"));
3322                 usage(B_FALSE);
3323         }
3324
3325         if (flags.nounmount)
3326                 types = ZFS_TYPE_FILESYSTEM;
3327         else if (parents)
3328                 types = ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME;
3329         else
3330                 types = ZFS_TYPE_DATASET;
3331
3332         if (flags.recurse) {
3333                 /*
3334                  * When we do recursive rename we are fine when the given
3335                  * snapshot for the given dataset doesn't exist - it can
3336                  * still exists below.
3337                  */
3338
3339                 snapshot = strchr(argv[0], '@');
3340                 assert(snapshot != NULL);
3341                 *snapshot = '\0';
3342                 snapshot++;
3343         }
3344
3345         if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL)
3346                 return (1);
3347
3348         /* If we were asked and the name looks good, try to create ancestors. */
3349         if (parents && zfs_name_valid(argv[1], zfs_get_type(zhp)) &&
3350             zfs_create_ancestors(g_zfs, argv[1]) != 0) {
3351                 zfs_close(zhp);
3352                 return (1);
3353         }
3354
3355         ret = (zfs_rename(zhp, snapshot, argv[1], flags) != 0);
3356
3357         zfs_close(zhp);
3358         return (ret);
3359 }
3360
3361 /*
3362  * zfs promote <fs>
3363  *
3364  * Promotes the given clone fs to be the parent
3365  */
3366 /* ARGSUSED */
3367 static int
3368 zfs_do_promote(int argc, char **argv)
3369 {
3370         zfs_handle_t *zhp;
3371         int ret = 0;
3372
3373         /* check options */
3374         if (argc > 1 && argv[1][0] == '-') {
3375                 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3376                     argv[1][1]);
3377                 usage(B_FALSE);
3378         }
3379
3380         /* check number of arguments */
3381         if (argc < 2) {
3382                 (void) fprintf(stderr, gettext("missing clone filesystem"
3383                     " argument\n"));
3384                 usage(B_FALSE);
3385         }
3386         if (argc > 2) {
3387                 (void) fprintf(stderr, gettext("too many arguments\n"));
3388                 usage(B_FALSE);
3389         }
3390
3391         zhp = zfs_open(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3392         if (zhp == NULL)
3393                 return (1);
3394
3395         ret = (zfs_promote(zhp) != 0);
3396
3397
3398         zfs_close(zhp);
3399         return (ret);
3400 }
3401
3402 /*
3403  * zfs rollback [-rRf] <snapshot>
3404  *
3405  *      -r      Delete any intervening snapshots before doing rollback
3406  *      -R      Delete any snapshots and their clones
3407  *      -f      ignored for backwards compatability
3408  *
3409  * Given a filesystem, rollback to a specific snapshot, discarding any changes
3410  * since then and making it the active dataset.  If more recent snapshots exist,
3411  * the command will complain unless the '-r' flag is given.
3412  */
3413 typedef struct rollback_cbdata {
3414         uint64_t        cb_create;
3415         boolean_t       cb_first;
3416         int             cb_doclones;
3417         char            *cb_target;
3418         int             cb_error;
3419         boolean_t       cb_recurse;
3420 } rollback_cbdata_t;
3421
3422 static int
3423 rollback_check_dependent(zfs_handle_t *zhp, void *data)
3424 {
3425         rollback_cbdata_t *cbp = data;
3426
3427         if (cbp->cb_first && cbp->cb_recurse) {
3428                 (void) fprintf(stderr, gettext("cannot rollback to "
3429                     "'%s': clones of previous snapshots exist\n"),
3430                     cbp->cb_target);
3431                 (void) fprintf(stderr, gettext("use '-R' to "
3432                     "force deletion of the following clones and "
3433                     "dependents:\n"));
3434                 cbp->cb_first = 0;
3435                 cbp->cb_error = 1;
3436         }
3437
3438         (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
3439
3440         zfs_close(zhp);
3441         return (0);
3442 }
3443
3444 /*
3445  * Report any snapshots more recent than the one specified.  Used when '-r' is
3446  * not specified.  We reuse this same callback for the snapshot dependents - if
3447  * 'cb_dependent' is set, then this is a dependent and we should report it
3448  * without checking the transaction group.
3449  */
3450 static int
3451 rollback_check(zfs_handle_t *zhp, void *data)
3452 {
3453         rollback_cbdata_t *cbp = data;
3454
3455         if (cbp->cb_doclones) {
3456                 zfs_close(zhp);
3457                 return (0);
3458         }
3459
3460         if (zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > cbp->cb_create) {
3461                 if (cbp->cb_first && !cbp->cb_recurse) {
3462                         (void) fprintf(stderr, gettext("cannot "
3463                             "rollback to '%s': more recent snapshots "
3464                             "or bookmarks exist\n"),
3465                             cbp->cb_target);
3466                         (void) fprintf(stderr, gettext("use '-r' to "
3467                             "force deletion of the following "
3468                             "snapshots and bookmarks:\n"));
3469                         cbp->cb_first = 0;
3470                         cbp->cb_error = 1;
3471                 }
3472
3473                 if (cbp->cb_recurse) {
3474                         if (zfs_iter_dependents(zhp, B_TRUE,
3475                             rollback_check_dependent, cbp) != 0) {
3476                                 zfs_close(zhp);
3477                                 return (-1);
3478                         }
3479                 } else {
3480                         (void) fprintf(stderr, "%s\n",
3481                             zfs_get_name(zhp));
3482                 }
3483         }
3484         zfs_close(zhp);
3485         return (0);
3486 }
3487
3488 static int
3489 zfs_do_rollback(int argc, char **argv)
3490 {
3491         int ret = 0;
3492         int c;
3493         boolean_t force = B_FALSE;
3494         rollback_cbdata_t cb = { 0 };
3495         zfs_handle_t *zhp, *snap;
3496         char parentname[ZFS_MAX_DATASET_NAME_LEN];
3497         char *delim;
3498
3499         /* check options */
3500         while ((c = getopt(argc, argv, "rRf")) != -1) {
3501                 switch (c) {
3502                 case 'r':
3503                         cb.cb_recurse = 1;
3504                         break;
3505                 case 'R':
3506                         cb.cb_recurse = 1;
3507                         cb.cb_doclones = 1;
3508                         break;
3509                 case 'f':
3510                         force = B_TRUE;
3511                         break;
3512                 case '?':
3513                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3514                             optopt);
3515                         usage(B_FALSE);
3516                 }
3517         }
3518
3519         argc -= optind;
3520         argv += optind;
3521
3522         /* check number of arguments */
3523         if (argc < 1) {
3524                 (void) fprintf(stderr, gettext("missing dataset argument\n"));
3525                 usage(B_FALSE);
3526         }
3527         if (argc > 1) {
3528                 (void) fprintf(stderr, gettext("too many arguments\n"));
3529                 usage(B_FALSE);
3530         }
3531
3532         /* open the snapshot */
3533         if ((snap = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
3534                 return (1);
3535
3536         /* open the parent dataset */
3537         (void) strlcpy(parentname, argv[0], sizeof (parentname));
3538         verify((delim = strrchr(parentname, '@')) != NULL);
3539         *delim = '\0';
3540         if ((zhp = zfs_open(g_zfs, parentname, ZFS_TYPE_DATASET)) == NULL) {
3541                 zfs_close(snap);
3542                 return (1);
3543         }
3544
3545         /*
3546          * Check for more recent snapshots and/or clones based on the presence
3547          * of '-r' and '-R'.
3548          */
3549         cb.cb_target = argv[0];
3550         cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG);
3551         cb.cb_first = B_TRUE;
3552         cb.cb_error = 0;
3553         if ((ret = zfs_iter_snapshots(zhp, B_FALSE, rollback_check, &cb)) != 0)
3554                 goto out;
3555         if ((ret = zfs_iter_bookmarks(zhp, rollback_check, &cb)) != 0)
3556                 goto out;
3557
3558         if ((ret = cb.cb_error) != 0)
3559                 goto out;
3560
3561         /*
3562          * Rollback parent to the given snapshot.
3563          */
3564         ret = zfs_rollback(zhp, snap, force);
3565
3566 out:
3567         zfs_close(snap);
3568         zfs_close(zhp);
3569
3570         if (ret == 0)
3571                 return (0);
3572         else
3573                 return (1);
3574 }
3575
3576 /*
3577  * zfs set property=value ... { fs | snap | vol } ...
3578  *
3579  * Sets the given properties for all datasets specified on the command line.
3580  */
3581
3582 static int
3583 set_callback(zfs_handle_t *zhp, void *data)
3584 {
3585         nvlist_t *props = data;
3586
3587         if (zfs_prop_set_list(zhp, props) != 0) {
3588                 switch (libzfs_errno(g_zfs)) {
3589                 case EZFS_MOUNTFAILED:
3590                         (void) fprintf(stderr, gettext("property may be set "
3591                             "but unable to remount filesystem\n"));
3592                         break;
3593                 case EZFS_SHARENFSFAILED:
3594                         (void) fprintf(stderr, gettext("property may be set "
3595                             "but unable to reshare filesystem\n"));
3596                         break;
3597                 }
3598                 return (1);
3599         }
3600         return (0);
3601 }
3602
3603 static int
3604 zfs_do_set(int argc, char **argv)
3605 {
3606         nvlist_t *props = NULL;
3607         int ds_start = -1; /* argv idx of first dataset arg */
3608         int ret = 0;
3609
3610         /* check for options */
3611         if (argc > 1 && argv[1][0] == '-') {
3612                 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3613                     argv[1][1]);
3614                 usage(B_FALSE);
3615         }
3616
3617         /* check number of arguments */
3618         if (argc < 2) {
3619                 (void) fprintf(stderr, gettext("missing arguments\n"));
3620                 usage(B_FALSE);
3621         }
3622         if (argc < 3) {
3623                 if (strchr(argv[1], '=') == NULL) {
3624                         (void) fprintf(stderr, gettext("missing property=value "
3625                             "argument(s)\n"));
3626                 } else {
3627                         (void) fprintf(stderr, gettext("missing dataset "
3628                             "name(s)\n"));
3629                 }
3630                 usage(B_FALSE);
3631         }
3632
3633         /* validate argument order:  prop=val args followed by dataset args */
3634         for (int i = 1; i < argc; i++) {
3635                 if (strchr(argv[i], '=') != NULL) {
3636                         if (ds_start > 0) {
3637                                 /* out-of-order prop=val argument */
3638                                 (void) fprintf(stderr, gettext("invalid "
3639                                     "argument order\n"), i);
3640                                 usage(B_FALSE);
3641                         }
3642                 } else if (ds_start < 0) {
3643                         ds_start = i;
3644                 }
3645         }
3646         if (ds_start < 0) {
3647                 (void) fprintf(stderr, gettext("missing dataset name(s)\n"));
3648                 usage(B_FALSE);
3649         }
3650
3651         /* Populate a list of property settings */
3652         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
3653                 nomem();
3654         for (int i = 1; i < ds_start; i++) {
3655                 if ((ret = parseprop(props, argv[i])) != 0)
3656                         goto error;
3657         }
3658
3659         ret = zfs_for_each(argc - ds_start, argv + ds_start, 0,
3660             ZFS_TYPE_DATASET, NULL, NULL, 0, set_callback, props);
3661
3662 error:
3663         nvlist_free(props);
3664         return (ret);
3665 }
3666
3667 typedef struct snap_cbdata {
3668         nvlist_t *sd_nvl;
3669         boolean_t sd_recursive;
3670         const char *sd_snapname;
3671 } snap_cbdata_t;
3672
3673 static int
3674 zfs_snapshot_cb(zfs_handle_t *zhp, void *arg)
3675 {
3676         snap_cbdata_t *sd = arg;
3677         char *name;
3678         int rv = 0;
3679         int error;
3680
3681         if (sd->sd_recursive &&
3682             zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) != 0) {
3683                 zfs_close(zhp);
3684                 return (0);
3685         }
3686
3687         error = asprintf(&name, "%s@%s", zfs_get_name(zhp), sd->sd_snapname);
3688         if (error == -1)
3689                 nomem();
3690         fnvlist_add_boolean(sd->sd_nvl, name);
3691         free(name);
3692
3693         if (sd->sd_recursive)
3694                 rv = zfs_iter_filesystems(zhp, zfs_snapshot_cb, sd);
3695         zfs_close(zhp);
3696         return (rv);
3697 }
3698
3699 /*
3700  * zfs snapshot [-r] [-o prop=value] ... <fs@snap>
3701  *
3702  * Creates a snapshot with the given name.  While functionally equivalent to
3703  * 'zfs create', it is a separate command to differentiate intent.
3704  */
3705 static int
3706 zfs_do_snapshot(int argc, char **argv)
3707 {
3708         int ret = 0;
3709         int c;
3710         nvlist_t *props;
3711         snap_cbdata_t sd = { 0 };
3712         boolean_t multiple_snaps = B_FALSE;
3713
3714         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
3715                 nomem();
3716         if (nvlist_alloc(&sd.sd_nvl, NV_UNIQUE_NAME, 0) != 0)
3717                 nomem();
3718
3719         /* check options */
3720         while ((c = getopt(argc, argv, "ro:")) != -1) {
3721                 switch (c) {
3722                 case 'o':
3723                         if (parseprop(props, optarg) != 0)
3724                                 return (1);
3725                         break;
3726                 case 'r':
3727                         sd.sd_recursive = B_TRUE;
3728                         multiple_snaps = B_TRUE;
3729                         break;
3730                 case '?':
3731                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3732                             optopt);
3733                         goto usage;
3734                 }
3735         }
3736
3737         argc -= optind;
3738         argv += optind;
3739
3740         /* check number of arguments */
3741         if (argc < 1) {
3742                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
3743                 goto usage;
3744         }
3745
3746         if (argc > 1)
3747                 multiple_snaps = B_TRUE;
3748         for (; argc > 0; argc--, argv++) {
3749                 char *atp;
3750                 zfs_handle_t *zhp;
3751
3752                 atp = strchr(argv[0], '@');
3753                 if (atp == NULL)
3754                         goto usage;
3755                 *atp = '\0';
3756                 sd.sd_snapname = atp + 1;
3757                 zhp = zfs_open(g_zfs, argv[0],
3758                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3759                 if (zhp == NULL)
3760                         goto usage;
3761                 if (zfs_snapshot_cb(zhp, &sd) != 0)
3762                         goto usage;
3763         }
3764
3765         ret = zfs_snapshot_nvl(g_zfs, sd.sd_nvl, props);
3766         nvlist_free(sd.sd_nvl);
3767         nvlist_free(props);
3768         if (ret != 0 && multiple_snaps)
3769                 (void) fprintf(stderr, gettext("no snapshots were created\n"));
3770         return (ret != 0);
3771
3772 usage:
3773         nvlist_free(sd.sd_nvl);
3774         nvlist_free(props);
3775         usage(B_FALSE);
3776         return (-1);
3777 }
3778
3779 /*
3780  * Send a backup stream to stdout.
3781  */
3782 static int
3783 zfs_do_send(int argc, char **argv)
3784 {
3785         char *fromname = NULL;
3786         char *toname = NULL;
3787         char *resume_token = NULL;
3788         char *cp;
3789         zfs_handle_t *zhp;
3790         sendflags_t flags = { 0 };
3791         int c, err;
3792         nvlist_t *dbgnv = NULL;
3793         boolean_t extraverbose = B_FALSE;
3794
3795         struct option long_options[] = {
3796                 {"replicate",   no_argument,            NULL, 'R'},
3797                 {"props",       no_argument,            NULL, 'p'},
3798                 {"parsable",    no_argument,            NULL, 'P'},
3799                 {"dedup",       no_argument,            NULL, 'D'},
3800                 {"verbose",     no_argument,            NULL, 'v'},
3801                 {"dryrun",      no_argument,            NULL, 'n'},
3802                 {"large-block", no_argument,            NULL, 'L'},
3803                 {"embed",       no_argument,            NULL, 'e'},
3804                 {"resume",      required_argument,      NULL, 't'},
3805                 {"compressed",  no_argument,            NULL, 'c'},
3806                 {0, 0, 0, 0}
3807         };
3808
3809         /* check options */
3810         while ((c = getopt_long(argc, argv, ":i:I:RbDpvnPLet:c", long_options,
3811             NULL)) != -1) {
3812                 switch (c) {
3813                 case 'i':
3814                         if (fromname)
3815                                 usage(B_FALSE);
3816                         fromname = optarg;
3817                         break;
3818                 case 'I':
3819                         if (fromname)
3820                                 usage(B_FALSE);
3821                         fromname = optarg;
3822                         flags.doall = B_TRUE;
3823                         break;
3824                 case 'R':
3825                         flags.replicate = B_TRUE;
3826                         break;
3827                 case 'p':
3828                         flags.props = B_TRUE;
3829                         break;
3830                 case 'P':
3831                         flags.parsable = B_TRUE;
3832                         flags.verbose = B_TRUE;
3833                         break;
3834                 case 'v':
3835                         if (flags.verbose)
3836                                 extraverbose = B_TRUE;
3837                         flags.verbose = B_TRUE;
3838                         flags.progress = B_TRUE;
3839                         break;
3840                 case 'D':
3841                         flags.dedup = B_TRUE;
3842                         break;
3843                 case 'n':
3844                         flags.dryrun = B_TRUE;
3845                         break;
3846                 case 'L':
3847                         flags.largeblock = B_TRUE;
3848                         break;
3849                 case 'e':
3850                         flags.embed_data = B_TRUE;
3851                         break;
3852                 case 't':
3853                         resume_token = optarg;
3854                         break;
3855                 case 'c':
3856                         flags.compress = B_TRUE;
3857                         break;
3858                 case ':':
3859                         (void) fprintf(stderr, gettext("missing argument for "
3860                             "'%c' option\n"), optopt);
3861                         usage(B_FALSE);
3862                         break;
3863                 case '?':
3864                         /*FALLTHROUGH*/
3865                 default:
3866                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3867                             optopt);
3868                         usage(B_FALSE);
3869                 }
3870         }
3871
3872         argc -= optind;
3873         argv += optind;
3874
3875         if (resume_token != NULL) {
3876                 if (fromname != NULL || flags.replicate || flags.props ||
3877                     flags.dedup) {
3878                         (void) fprintf(stderr,
3879                             gettext("invalid flags combined with -t\n"));
3880                         usage(B_FALSE);
3881                 }
3882                 if (argc != 0) {
3883                         (void) fprintf(stderr, gettext("no additional "
3884                             "arguments are permitted with -t\n"));
3885                         usage(B_FALSE);
3886                 }
3887         } else {
3888                 if (argc < 1) {
3889                         (void) fprintf(stderr,
3890                             gettext("missing snapshot argument\n"));
3891                         usage(B_FALSE);
3892                 }
3893                 if (argc > 1) {
3894                         (void) fprintf(stderr, gettext("too many arguments\n"));
3895                         usage(B_FALSE);
3896                 }
3897         }
3898
3899         if (!flags.dryrun && isatty(STDOUT_FILENO)) {
3900                 (void) fprintf(stderr,
3901                     gettext("Error: Stream can not be written to a terminal.\n"
3902                     "You must redirect standard output.\n"));
3903                 return (1);
3904         }
3905
3906         if (resume_token != NULL) {
3907                 return (zfs_send_resume(g_zfs, &flags, STDOUT_FILENO,
3908                     resume_token));
3909         }
3910
3911         /*
3912          * Special case sending a filesystem, or from a bookmark.
3913          */
3914         if (strchr(argv[0], '@') == NULL ||
3915             (fromname && strchr(fromname, '#') != NULL)) {
3916                 char frombuf[ZFS_MAX_DATASET_NAME_LEN];
3917                 enum lzc_send_flags lzc_flags = 0;
3918
3919                 if (flags.replicate || flags.doall || flags.props ||
3920                     flags.dedup || flags.dryrun || flags.verbose ||
3921                     flags.progress) {
3922                         (void) fprintf(stderr,
3923                             gettext("Error: "
3924                             "Unsupported flag with filesystem or bookmark.\n"));
3925                         return (1);
3926                 }
3927
3928                 zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET);
3929                 if (zhp == NULL)
3930                         return (1);
3931
3932                 if (flags.largeblock)
3933                         lzc_flags |= LZC_SEND_FLAG_LARGE_BLOCK;
3934                 if (flags.embed_data)
3935                         lzc_flags |= LZC_SEND_FLAG_EMBED_DATA;
3936                 if (flags.compress)
3937                         lzc_flags |= LZC_SEND_FLAG_COMPRESS;
3938
3939                 if (fromname != NULL &&
3940                     (fromname[0] == '#' || fromname[0] == '@')) {
3941                         /*
3942                          * Incremental source name begins with # or @.
3943                          * Default to same fs as target.
3944                          */
3945                         (void) strncpy(frombuf, argv[0], sizeof (frombuf));
3946                         cp = strchr(frombuf, '@');
3947                         if (cp != NULL)
3948                                 *cp = '\0';
3949                         (void) strlcat(frombuf, fromname, sizeof (frombuf));
3950                         fromname = frombuf;
3951                 }
3952                 err = zfs_send_one(zhp, fromname, STDOUT_FILENO, lzc_flags);
3953                 zfs_close(zhp);
3954                 return (err != 0);
3955         }
3956
3957         cp = strchr(argv[0], '@');
3958         *cp = '\0';
3959         toname = cp + 1;
3960         zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3961         if (zhp == NULL)
3962                 return (1);
3963
3964         /*
3965          * If they specified the full path to the snapshot, chop off
3966          * everything except the short name of the snapshot, but special
3967          * case if they specify the origin.
3968          */
3969         if (fromname && (cp = strchr(fromname, '@')) != NULL) {
3970                 char origin[ZFS_MAX_DATASET_NAME_LEN];
3971                 zprop_source_t src;
3972
3973                 (void) zfs_prop_get(zhp, ZFS_PROP_ORIGIN,
3974                     origin, sizeof (origin), &src, NULL, 0, B_FALSE);
3975
3976                 if (strcmp(origin, fromname) == 0) {
3977                         fromname = NULL;
3978                         flags.fromorigin = B_TRUE;
3979                 } else {
3980                         *cp = '\0';
3981                         if (cp != fromname && strcmp(argv[0], fromname)) {
3982                                 (void) fprintf(stderr,
3983                                     gettext("incremental source must be "
3984                                     "in same filesystem\n"));
3985                                 usage(B_FALSE);
3986                         }
3987                         fromname = cp + 1;
3988                         if (strchr(fromname, '@') || strchr(fromname, '/')) {
3989                                 (void) fprintf(stderr,
3990                                     gettext("invalid incremental source\n"));
3991                                 usage(B_FALSE);
3992                         }
3993                 }
3994         }
3995
3996         if (flags.replicate && fromname == NULL)
3997                 flags.doall = B_TRUE;
3998
3999         err = zfs_send(zhp, fromname, toname, &flags, STDOUT_FILENO, NULL, 0,
4000             extraverbose ? &dbgnv : NULL);
4001
4002         if (extraverbose && dbgnv != NULL) {
4003                 /*
4004                  * dump_nvlist prints to stdout, but that's been
4005                  * redirected to a file.  Make it print to stderr
4006                  * instead.
4007                  */
4008                 (void) dup2(STDERR_FILENO, STDOUT_FILENO);
4009                 dump_nvlist(dbgnv, 0);
4010                 nvlist_free(dbgnv);
4011         }
4012         zfs_close(zhp);
4013
4014         return (err != 0);
4015 }
4016
4017 /*
4018  * Restore a backup stream from stdin.
4019  */
4020 static int
4021 zfs_do_receive(int argc, char **argv)
4022 {
4023         int c, err = 0;
4024         recvflags_t flags = { 0 };
4025         boolean_t abort_resumable = B_FALSE;
4026
4027         nvlist_t *props;
4028         nvpair_t *nvp = NULL;
4029
4030         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
4031                 nomem();
4032
4033         /* check options */
4034         while ((c = getopt(argc, argv, ":o:denuvFsA")) != -1) {
4035                 switch (c) {
4036                 case 'o':
4037                         if (parseprop(props, optarg) != 0)
4038                                 return (1);
4039                         break;
4040                 case 'd':
4041                         flags.isprefix = B_TRUE;
4042                         break;
4043                 case 'e':
4044                         flags.isprefix = B_TRUE;
4045                         flags.istail = B_TRUE;
4046                         break;
4047                 case 'n':
4048                         flags.dryrun = B_TRUE;
4049                         break;
4050                 case 'u':
4051                         flags.nomount = B_TRUE;
4052                         break;
4053                 case 'v':
4054                         flags.verbose = B_TRUE;
4055                         break;
4056                 case 's':
4057                         flags.resumable = B_TRUE;
4058                         break;
4059                 case 'F':
4060                         flags.force = B_TRUE;
4061                         break;
4062                 case 'A':
4063                         abort_resumable = B_TRUE;
4064                         break;
4065                 case ':':
4066                         (void) fprintf(stderr, gettext("missing argument for "
4067                             "'%c' option\n"), optopt);
4068                         usage(B_FALSE);
4069                         break;
4070                 case '?':
4071                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
4072                             optopt);
4073                         usage(B_FALSE);
4074                 }
4075         }
4076
4077         argc -= optind;
4078         argv += optind;
4079
4080         /* check number of arguments */
4081         if (argc < 1) {
4082                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
4083                 usage(B_FALSE);
4084         }
4085         if (argc > 1) {
4086                 (void) fprintf(stderr, gettext("too many arguments\n"));
4087                 usage(B_FALSE);
4088         }
4089
4090         while ((nvp = nvlist_next_nvpair(props, nvp))) {
4091                 if (strcmp(nvpair_name(nvp), "origin") != 0) {
4092                         (void) fprintf(stderr, gettext("invalid option"));
4093                         usage(B_FALSE);
4094                 }
4095         }
4096
4097         if (abort_resumable) {
4098                 if (flags.isprefix || flags.istail || flags.dryrun ||
4099                     flags.resumable || flags.nomount) {
4100                         (void) fprintf(stderr, gettext("invalid option"));
4101                         usage(B_FALSE);
4102                 }
4103
4104                 char namebuf[ZFS_MAX_DATASET_NAME_LEN];
4105                 (void) snprintf(namebuf, sizeof (namebuf),
4106                     "%s/%%recv", argv[0]);
4107
4108                 if (zfs_dataset_exists(g_zfs, namebuf,
4109                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME)) {
4110                         zfs_handle_t *zhp = zfs_open(g_zfs,
4111                             namebuf, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
4112                         if (zhp == NULL)
4113                                 return (1);
4114                         err = zfs_destroy(zhp, B_FALSE);
4115                 } else {
4116                         zfs_handle_t *zhp = zfs_open(g_zfs,
4117                             argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
4118                         if (zhp == NULL)
4119                                 usage(B_FALSE);
4120                         if (!zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) ||
4121                             zfs_prop_get(zhp, ZFS_PROP_RECEIVE_RESUME_TOKEN,
4122                             NULL, 0, NULL, NULL, 0, B_TRUE) == -1) {
4123                                 (void) fprintf(stderr,
4124                                     gettext("'%s' does not have any "
4125                                     "resumable receive state to abort\n"),
4126                                     argv[0]);
4127                                 return (1);
4128                         }
4129                         err = zfs_destroy(zhp, B_FALSE);
4130                 }
4131
4132                 return (err != 0);
4133         }
4134
4135         if (isatty(STDIN_FILENO)) {
4136                 (void) fprintf(stderr,
4137                     gettext("Error: Backup stream can not be read "
4138                     "from a terminal.\n"
4139                     "You must redirect standard input.\n"));
4140                 return (1);
4141         }
4142         err = zfs_receive(g_zfs, argv[0], props, &flags, STDIN_FILENO, NULL);
4143
4144         return (err != 0);
4145 }
4146
4147 /*
4148  * allow/unallow stuff
4149  */
4150 /* copied from zfs/sys/dsl_deleg.h */
4151 #define ZFS_DELEG_PERM_CREATE           "create"
4152 #define ZFS_DELEG_PERM_DESTROY          "destroy"
4153 #define ZFS_DELEG_PERM_SNAPSHOT         "snapshot"
4154 #define ZFS_DELEG_PERM_ROLLBACK         "rollback"
4155 #define ZFS_DELEG_PERM_CLONE            "clone"
4156 #define ZFS_DELEG_PERM_PROMOTE          "promote"
4157 #define ZFS_DELEG_PERM_RENAME           "rename"
4158 #define ZFS_DELEG_PERM_MOUNT            "mount"
4159 #define ZFS_DELEG_PERM_SHARE            "share"
4160 #define ZFS_DELEG_PERM_SEND             "send"
4161 #define ZFS_DELEG_PERM_RECEIVE          "receive"
4162 #define ZFS_DELEG_PERM_ALLOW            "allow"
4163 #define ZFS_DELEG_PERM_USERPROP         "userprop"
4164 #define ZFS_DELEG_PERM_VSCAN            "vscan" /* ??? */
4165 #define ZFS_DELEG_PERM_USERQUOTA        "userquota"
4166 #define ZFS_DELEG_PERM_GROUPQUOTA       "groupquota"
4167 #define ZFS_DELEG_PERM_USERUSED         "userused"
4168 #define ZFS_DELEG_PERM_GROUPUSED        "groupused"
4169 #define ZFS_DELEG_PERM_HOLD             "hold"
4170 #define ZFS_DELEG_PERM_RELEASE          "release"
4171 #define ZFS_DELEG_PERM_DIFF             "diff"
4172 #define ZFS_DELEG_PERM_BOOKMARK         "bookmark"
4173
4174 #define ZFS_NUM_DELEG_NOTES ZFS_DELEG_NOTE_NONE
4175
4176 static zfs_deleg_perm_tab_t zfs_deleg_perm_tbl[] = {
4177         { ZFS_DELEG_PERM_ALLOW, ZFS_DELEG_NOTE_ALLOW },
4178         { ZFS_DELEG_PERM_CLONE, ZFS_DELEG_NOTE_CLONE },
4179         { ZFS_DELEG_PERM_CREATE, ZFS_DELEG_NOTE_CREATE },
4180         { ZFS_DELEG_PERM_DESTROY, ZFS_DELEG_NOTE_DESTROY },
4181         { ZFS_DELEG_PERM_DIFF, ZFS_DELEG_NOTE_DIFF},
4182         { ZFS_DELEG_PERM_HOLD, ZFS_DELEG_NOTE_HOLD },
4183         { ZFS_DELEG_PERM_MOUNT, ZFS_DELEG_NOTE_MOUNT },
4184         { ZFS_DELEG_PERM_PROMOTE, ZFS_DELEG_NOTE_PROMOTE },
4185         { ZFS_DELEG_PERM_RECEIVE, ZFS_DELEG_NOTE_RECEIVE },
4186         { ZFS_DELEG_PERM_RELEASE, ZFS_DELEG_NOTE_RELEASE },
4187         { ZFS_DELEG_PERM_RENAME, ZFS_DELEG_NOTE_RENAME },
4188         { ZFS_DELEG_PERM_ROLLBACK, ZFS_DELEG_NOTE_ROLLBACK },
4189         { ZFS_DELEG_PERM_SEND, ZFS_DELEG_NOTE_SEND },
4190         { ZFS_DELEG_PERM_SHARE, ZFS_DELEG_NOTE_SHARE },
4191         { ZFS_DELEG_PERM_SNAPSHOT, ZFS_DELEG_NOTE_SNAPSHOT },
4192         { ZFS_DELEG_PERM_BOOKMARK, ZFS_DELEG_NOTE_BOOKMARK },
4193
4194         { ZFS_DELEG_PERM_GROUPQUOTA, ZFS_DELEG_NOTE_GROUPQUOTA },
4195         { ZFS_DELEG_PERM_GROUPUSED, ZFS_DELEG_NOTE_GROUPUSED },
4196         { ZFS_DELEG_PERM_USERPROP, ZFS_DELEG_NOTE_USERPROP },
4197         { ZFS_DELEG_PERM_USERQUOTA, ZFS_DELEG_NOTE_USERQUOTA },
4198         { ZFS_DELEG_PERM_USERUSED, ZFS_DELEG_NOTE_USERUSED },
4199         { NULL, ZFS_DELEG_NOTE_NONE }
4200 };
4201
4202 /* permission structure */
4203 typedef struct deleg_perm {
4204         zfs_deleg_who_type_t    dp_who_type;
4205         const char              *dp_name;
4206         boolean_t               dp_local;
4207         boolean_t               dp_descend;
4208 } deleg_perm_t;
4209
4210 /* */
4211 typedef struct deleg_perm_node {
4212         deleg_perm_t            dpn_perm;
4213
4214         uu_avl_node_t           dpn_avl_node;
4215 } deleg_perm_node_t;
4216
4217 typedef struct fs_perm fs_perm_t;
4218
4219 /* permissions set */
4220 typedef struct who_perm {
4221         zfs_deleg_who_type_t    who_type;
4222         const char              *who_name;              /* id */
4223         char                    who_ug_name[256];       /* user/group name */
4224         fs_perm_t               *who_fsperm;            /* uplink */
4225
4226         uu_avl_t                *who_deleg_perm_avl;    /* permissions */
4227 } who_perm_t;
4228
4229 /* */
4230 typedef struct who_perm_node {
4231         who_perm_t      who_perm;
4232         uu_avl_node_t   who_avl_node;
4233 } who_perm_node_t;
4234
4235 typedef struct fs_perm_set fs_perm_set_t;
4236 /* fs permissions */
4237 struct fs_perm {
4238         const char              *fsp_name;
4239
4240         uu_avl_t                *fsp_sc_avl;    /* sets,create */
4241         uu_avl_t                *fsp_uge_avl;   /* user,group,everyone */
4242
4243         fs_perm_set_t           *fsp_set;       /* uplink */
4244 };
4245
4246 /* */
4247 typedef struct fs_perm_node {
4248         fs_perm_t       fspn_fsperm;
4249         uu_avl_t        *fspn_avl;
4250
4251         uu_list_node_t  fspn_list_node;
4252 } fs_perm_node_t;
4253
4254 /* top level structure */
4255 struct fs_perm_set {
4256         uu_list_pool_t  *fsps_list_pool;
4257         uu_list_t       *fsps_list; /* list of fs_perms */
4258
4259         uu_avl_pool_t   *fsps_named_set_avl_pool;
4260         uu_avl_pool_t   *fsps_who_perm_avl_pool;
4261         uu_avl_pool_t   *fsps_deleg_perm_avl_pool;
4262 };
4263
4264 static inline const char *
4265 deleg_perm_type(zfs_deleg_note_t note)
4266 {
4267         /* subcommands */
4268         switch (note) {
4269                 /* SUBCOMMANDS */
4270                 /* OTHER */
4271         case ZFS_DELEG_NOTE_GROUPQUOTA:
4272         case ZFS_DELEG_NOTE_GROUPUSED:
4273         case ZFS_DELEG_NOTE_USERPROP:
4274         case ZFS_DELEG_NOTE_USERQUOTA:
4275         case ZFS_DELEG_NOTE_USERUSED:
4276                 /* other */
4277                 return (gettext("other"));
4278         default:
4279                 return (gettext("subcommand"));
4280         }
4281 }
4282
4283 static int
4284 who_type2weight(zfs_deleg_who_type_t who_type)
4285 {
4286         int res;
4287         switch (who_type) {
4288                 case ZFS_DELEG_NAMED_SET_SETS:
4289                 case ZFS_DELEG_NAMED_SET:
4290                         res = 0;
4291                         break;
4292                 case ZFS_DELEG_CREATE_SETS:
4293                 case ZFS_DELEG_CREATE:
4294                         res = 1;
4295                         break;
4296                 case ZFS_DELEG_USER_SETS:
4297                 case ZFS_DELEG_USER:
4298                         res = 2;
4299                         break;
4300                 case ZFS_DELEG_GROUP_SETS:
4301                 case ZFS_DELEG_GROUP:
4302                         res = 3;
4303                         break;
4304                 case ZFS_DELEG_EVERYONE_SETS:
4305                 case ZFS_DELEG_EVERYONE:
4306                         res = 4;
4307                         break;
4308                 default:
4309                         res = -1;
4310         }
4311
4312         return (res);
4313 }
4314
4315 /* ARGSUSED */
4316 static int
4317 who_perm_compare(const void *larg, const void *rarg, void *unused)
4318 {
4319         const who_perm_node_t *l = larg;
4320         const who_perm_node_t *r = rarg;
4321         zfs_deleg_who_type_t ltype = l->who_perm.who_type;
4322         zfs_deleg_who_type_t rtype = r->who_perm.who_type;
4323         int lweight = who_type2weight(ltype);
4324         int rweight = who_type2weight(rtype);
4325         int res = lweight - rweight;
4326         if (res == 0)
4327                 res = strncmp(l->who_perm.who_name, r->who_perm.who_name,
4328                     ZFS_MAX_DELEG_NAME-1);
4329
4330         if (res == 0)
4331                 return (0);
4332         if (res > 0)
4333                 return (1);
4334         else
4335                 return (-1);
4336 }
4337
4338 /* ARGSUSED */
4339 static int
4340 deleg_perm_compare(const void *larg, const void *rarg, void *unused)
4341 {
4342         const deleg_perm_node_t *l = larg;
4343         const deleg_perm_node_t *r = rarg;
4344         int res =  strncmp(l->dpn_perm.dp_name, r->dpn_perm.dp_name,
4345             ZFS_MAX_DELEG_NAME-1);
4346
4347         if (res == 0)
4348                 return (0);
4349
4350         if (res > 0)
4351                 return (1);
4352         else
4353                 return (-1);
4354 }
4355
4356 static inline void
4357 fs_perm_set_init(fs_perm_set_t *fspset)
4358 {
4359         bzero(fspset, sizeof (fs_perm_set_t));
4360
4361         if ((fspset->fsps_list_pool = uu_list_pool_create("fsps_list_pool",
4362             sizeof (fs_perm_node_t), offsetof(fs_perm_node_t, fspn_list_node),
4363             NULL, UU_DEFAULT)) == NULL)
4364                 nomem();
4365         if ((fspset->fsps_list = uu_list_create(fspset->fsps_list_pool, NULL,
4366             UU_DEFAULT)) == NULL)
4367                 nomem();
4368
4369         if ((fspset->fsps_named_set_avl_pool = uu_avl_pool_create(
4370             "named_set_avl_pool", sizeof (who_perm_node_t), offsetof(
4371             who_perm_node_t, who_avl_node), who_perm_compare,
4372             UU_DEFAULT)) == NULL)
4373                 nomem();
4374
4375         if ((fspset->fsps_who_perm_avl_pool = uu_avl_pool_create(
4376             "who_perm_avl_pool", sizeof (who_perm_node_t), offsetof(
4377             who_perm_node_t, who_avl_node), who_perm_compare,
4378             UU_DEFAULT)) == NULL)
4379                 nomem();
4380
4381         if ((fspset->fsps_deleg_perm_avl_pool = uu_avl_pool_create(
4382             "deleg_perm_avl_pool", sizeof (deleg_perm_node_t), offsetof(
4383             deleg_perm_node_t, dpn_avl_node), deleg_perm_compare, UU_DEFAULT))
4384             == NULL)
4385                 nomem();
4386 }
4387
4388 static inline void fs_perm_fini(fs_perm_t *);
4389 static inline void who_perm_fini(who_perm_t *);
4390
4391 static inline void
4392 fs_perm_set_fini(fs_perm_set_t *fspset)
4393 {
4394         fs_perm_node_t *node = uu_list_first(fspset->fsps_list);
4395
4396         while (node != NULL) {
4397                 fs_perm_node_t *next_node =
4398                     uu_list_next(fspset->fsps_list, node);
4399                 fs_perm_t *fsperm = &node->fspn_fsperm;
4400                 fs_perm_fini(fsperm);
4401                 uu_list_remove(fspset->fsps_list, node);
4402                 free(node);
4403                 node = next_node;
4404         }
4405
4406         uu_avl_pool_destroy(fspset->fsps_named_set_avl_pool);
4407         uu_avl_pool_destroy(fspset->fsps_who_perm_avl_pool);
4408         uu_avl_pool_destroy(fspset->fsps_deleg_perm_avl_pool);
4409 }
4410
4411 static inline void
4412 deleg_perm_init(deleg_perm_t *deleg_perm, zfs_deleg_who_type_t type,
4413     const char *name)
4414 {
4415         deleg_perm->dp_who_type = type;
4416         deleg_perm->dp_name = name;
4417 }
4418
4419 static inline void
4420 who_perm_init(who_perm_t *who_perm, fs_perm_t *fsperm,
4421     zfs_deleg_who_type_t type, const char *name)
4422 {
4423         uu_avl_pool_t   *pool;
4424         pool = fsperm->fsp_set->fsps_deleg_perm_avl_pool;
4425
4426         bzero(who_perm, sizeof (who_perm_t));
4427
4428         if ((who_perm->who_deleg_perm_avl = uu_avl_create(pool, NULL,
4429             UU_DEFAULT)) == NULL)
4430                 nomem();
4431
4432         who_perm->who_type = type;
4433         who_perm->who_name = name;
4434         who_perm->who_fsperm = fsperm;
4435 }
4436
4437 static inline void
4438 who_perm_fini(who_perm_t *who_perm)
4439 {
4440         deleg_perm_node_t *node = uu_avl_first(who_perm->who_deleg_perm_avl);
4441
4442         while (node != NULL) {
4443                 deleg_perm_node_t *next_node =
4444                     uu_avl_next(who_perm->who_deleg_perm_avl, node);
4445
4446                 uu_avl_remove(who_perm->who_deleg_perm_avl, node);
4447                 free(node);
4448                 node = next_node;
4449         }
4450
4451         uu_avl_destroy(who_perm->who_deleg_perm_avl);
4452 }
4453
4454 static inline void
4455 fs_perm_init(fs_perm_t *fsperm, fs_perm_set_t *fspset, const char *fsname)
4456 {
4457         uu_avl_pool_t   *nset_pool = fspset->fsps_named_set_avl_pool;
4458         uu_avl_pool_t   *who_pool = fspset->fsps_who_perm_avl_pool;
4459
4460         bzero(fsperm, sizeof (fs_perm_t));
4461
4462         if ((fsperm->fsp_sc_avl = uu_avl_create(nset_pool, NULL, UU_DEFAULT))
4463             == NULL)
4464                 nomem();
4465
4466         if ((fsperm->fsp_uge_avl = uu_avl_create(who_pool, NULL, UU_DEFAULT))
4467             == NULL)
4468                 nomem();
4469
4470         fsperm->fsp_set = fspset;
4471         fsperm->fsp_name = fsname;
4472 }
4473
4474 static inline void
4475 fs_perm_fini(fs_perm_t *fsperm)
4476 {
4477         who_perm_node_t *node = uu_avl_first(fsperm->fsp_sc_avl);
4478         while (node != NULL) {
4479                 who_perm_node_t *next_node = uu_avl_next(fsperm->fsp_sc_avl,
4480                     node);
4481                 who_perm_t *who_perm = &node->who_perm;
4482                 who_perm_fini(who_perm);
4483                 uu_avl_remove(fsperm->fsp_sc_avl, node);
4484                 free(node);
4485                 node = next_node;
4486         }
4487
4488         node = uu_avl_first(fsperm->fsp_uge_avl);
4489         while (node != NULL) {
4490                 who_perm_node_t *next_node = uu_avl_next(fsperm->fsp_uge_avl,
4491                     node);
4492                 who_perm_t *who_perm = &node->who_perm;
4493                 who_perm_fini(who_perm);
4494                 uu_avl_remove(fsperm->fsp_uge_avl, node);
4495                 free(node);
4496                 node = next_node;
4497         }
4498
4499         uu_avl_destroy(fsperm->fsp_sc_avl);
4500         uu_avl_destroy(fsperm->fsp_uge_avl);
4501 }
4502
4503 static void
4504 set_deleg_perm_node(uu_avl_t *avl, deleg_perm_node_t *node,
4505     zfs_deleg_who_type_t who_type, const char *name, char locality)
4506 {
4507         uu_avl_index_t idx = 0;
4508
4509         deleg_perm_node_t *found_node = NULL;
4510         deleg_perm_t    *deleg_perm = &node->dpn_perm;
4511
4512         deleg_perm_init(deleg_perm, who_type, name);
4513
4514         if ((found_node = uu_avl_find(avl, node, NULL, &idx))
4515             == NULL)
4516                 uu_avl_insert(avl, node, idx);
4517         else {
4518                 node = found_node;
4519                 deleg_perm = &node->dpn_perm;
4520         }
4521
4522
4523         switch (locality) {
4524         case ZFS_DELEG_LOCAL:
4525                 deleg_perm->dp_local = B_TRUE;
4526                 break;
4527         case ZFS_DELEG_DESCENDENT:
4528                 deleg_perm->dp_descend = B_TRUE;
4529                 break;
4530         case ZFS_DELEG_NA:
4531                 break;
4532         default:
4533                 assert(B_FALSE); /* invalid locality */
4534         }
4535 }
4536
4537 static inline int
4538 parse_who_perm(who_perm_t *who_perm, nvlist_t *nvl, char locality)
4539 {
4540         nvpair_t *nvp = NULL;
4541         fs_perm_set_t *fspset = who_perm->who_fsperm->fsp_set;
4542         uu_avl_t *avl = who_perm->who_deleg_perm_avl;
4543         zfs_deleg_who_type_t who_type = who_perm->who_type;
4544
4545         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4546                 const char *name = nvpair_name(nvp);
4547                 data_type_t type = nvpair_type(nvp);
4548                 uu_avl_pool_t *avl_pool = fspset->fsps_deleg_perm_avl_pool;
4549                 deleg_perm_node_t *node =
4550                     safe_malloc(sizeof (deleg_perm_node_t));
4551
4552                 assert(type == DATA_TYPE_BOOLEAN);
4553
4554                 uu_avl_node_init(node, &node->dpn_avl_node, avl_pool);
4555                 set_deleg_perm_node(avl, node, who_type, name, locality);
4556         }
4557
4558         return (0);
4559 }
4560
4561 static inline int
4562 parse_fs_perm(fs_perm_t *fsperm, nvlist_t *nvl)
4563 {
4564         nvpair_t *nvp = NULL;
4565         fs_perm_set_t *fspset = fsperm->fsp_set;
4566
4567         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4568                 nvlist_t *nvl2 = NULL;
4569                 const char *name = nvpair_name(nvp);
4570                 uu_avl_t *avl = NULL;
4571                 uu_avl_pool_t *avl_pool = NULL;
4572                 zfs_deleg_who_type_t perm_type = name[0];
4573                 char perm_locality = name[1];
4574                 const char *perm_name = name + 3;
4575                 boolean_t is_set = B_TRUE;
4576                 who_perm_t *who_perm = NULL;
4577
4578                 assert('$' == name[2]);
4579
4580                 if (nvpair_value_nvlist(nvp, &nvl2) != 0)
4581                         return (-1);
4582
4583                 switch (perm_type) {
4584                 case ZFS_DELEG_CREATE:
4585                 case ZFS_DELEG_CREATE_SETS:
4586                 case ZFS_DELEG_NAMED_SET:
4587                 case ZFS_DELEG_NAMED_SET_SETS:
4588                         avl_pool = fspset->fsps_named_set_avl_pool;
4589                         avl = fsperm->fsp_sc_avl;
4590                         break;
4591                 case ZFS_DELEG_USER:
4592                 case ZFS_DELEG_USER_SETS:
4593                 case ZFS_DELEG_GROUP:
4594                 case ZFS_DELEG_GROUP_SETS:
4595                 case ZFS_DELEG_EVERYONE:
4596                 case ZFS_DELEG_EVERYONE_SETS:
4597                         avl_pool = fspset->fsps_who_perm_avl_pool;
4598                         avl = fsperm->fsp_uge_avl;
4599                         break;
4600
4601                 default:
4602                         assert(!"unhandled zfs_deleg_who_type_t");
4603                 }
4604
4605                 if (is_set) {
4606                         who_perm_node_t *found_node = NULL;
4607                         who_perm_node_t *node = safe_malloc(
4608                             sizeof (who_perm_node_t));
4609                         who_perm = &node->who_perm;
4610                         uu_avl_index_t idx = 0;
4611
4612                         uu_avl_node_init(node, &node->who_avl_node, avl_pool);
4613                         who_perm_init(who_perm, fsperm, perm_type, perm_name);
4614
4615                         if ((found_node = uu_avl_find(avl, node, NULL, &idx))
4616                             == NULL) {
4617                                 if (avl == fsperm->fsp_uge_avl) {
4618                                         uid_t rid = 0;
4619                                         struct passwd *p = NULL;
4620                                         struct group *g = NULL;
4621                                         const char *nice_name = NULL;
4622
4623                                         switch (perm_type) {
4624                                         case ZFS_DELEG_USER_SETS:
4625                                         case ZFS_DELEG_USER:
4626                                                 rid = atoi(perm_name);
4627                                                 p = getpwuid(rid);
4628                                                 if (p)
4629                                                         nice_name = p->pw_name;
4630                                                 break;
4631                                         case ZFS_DELEG_GROUP_SETS:
4632                                         case ZFS_DELEG_GROUP:
4633                                                 rid = atoi(perm_name);
4634                                                 g = getgrgid(rid);
4635                                                 if (g)
4636                                                         nice_name = g->gr_name;
4637                                                 break;
4638
4639                                         default:
4640                                                 break;
4641                                         }
4642
4643                                         if (nice_name != NULL)
4644                                                 (void) strlcpy(
4645                                                     node->who_perm.who_ug_name,
4646                                                     nice_name, 256);
4647                                 }
4648
4649                                 uu_avl_insert(avl, node, idx);
4650                         } else {
4651                                 node = found_node;
4652                                 who_perm = &node->who_perm;
4653                         }
4654                 }
4655
4656                 (void) parse_who_perm(who_perm, nvl2, perm_locality);
4657         }
4658
4659         return (0);
4660 }
4661
4662 static inline int
4663 parse_fs_perm_set(fs_perm_set_t *fspset, nvlist_t *nvl)
4664 {
4665         nvpair_t *nvp = NULL;
4666         uu_avl_index_t idx = 0;
4667
4668         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4669                 nvlist_t *nvl2 = NULL;
4670                 const char *fsname = nvpair_name(nvp);
4671                 data_type_t type = nvpair_type(nvp);
4672                 fs_perm_t *fsperm = NULL;
4673                 fs_perm_node_t *node = safe_malloc(sizeof (fs_perm_node_t));
4674                 if (node == NULL)
4675                         nomem();
4676
4677                 fsperm = &node->fspn_fsperm;
4678
4679                 assert(DATA_TYPE_NVLIST == type);
4680
4681                 uu_list_node_init(node, &node->fspn_list_node,
4682                     fspset->fsps_list_pool);
4683
4684                 idx = uu_list_numnodes(fspset->fsps_list);
4685                 fs_perm_init(fsperm, fspset, fsname);
4686
4687                 if (nvpair_value_nvlist(nvp, &nvl2) != 0)
4688                         return (-1);
4689
4690                 (void) parse_fs_perm(fsperm, nvl2);
4691
4692                 uu_list_insert(fspset->fsps_list, node, idx);
4693         }
4694
4695         return (0);
4696 }
4697
4698 static inline const char *
4699 deleg_perm_comment(zfs_deleg_note_t note)
4700 {
4701         const char *str = "";
4702
4703         /* subcommands */
4704         switch (note) {
4705                 /* SUBCOMMANDS */
4706         case ZFS_DELEG_NOTE_ALLOW:
4707                 str = gettext("Must also have the permission that is being"
4708                     "\n\t\t\t\tallowed");
4709                 break;
4710         case ZFS_DELEG_NOTE_CLONE:
4711                 str = gettext("Must also have the 'create' ability and 'mount'"
4712                     "\n\t\t\t\tability in the origin file system");
4713                 break;
4714         case ZFS_DELEG_NOTE_CREATE:
4715                 str = gettext("Must also have the 'mount' ability");
4716                 break;
4717         case ZFS_DELEG_NOTE_DESTROY:
4718                 str = gettext("Must also have the 'mount' ability");
4719                 break;
4720         case ZFS_DELEG_NOTE_DIFF:
4721                 str = gettext("Allows lookup of paths within a dataset;"
4722                     "\n\t\t\t\tgiven an object number. Ordinary users need this"
4723                     "\n\t\t\t\tin order to use zfs diff");
4724                 break;
4725         case ZFS_DELEG_NOTE_HOLD:
4726                 str = gettext("Allows adding a user hold to a snapshot");
4727                 break;
4728         case ZFS_DELEG_NOTE_MOUNT:
4729                 str = gettext("Allows mount/umount of ZFS datasets");
4730                 break;
4731         case ZFS_DELEG_NOTE_PROMOTE:
4732                 str = gettext("Must also have the 'mount'\n\t\t\t\tand"
4733                     " 'promote' ability in the origin file system");
4734                 break;
4735         case ZFS_DELEG_NOTE_RECEIVE:
4736                 str = gettext("Must also have the 'mount' and 'create'"
4737                     " ability");
4738                 break;
4739         case ZFS_DELEG_NOTE_RELEASE:
4740                 str = gettext("Allows releasing a user hold which\n\t\t\t\t"
4741                     "might destroy the snapshot");
4742                 break;
4743         case ZFS_DELEG_NOTE_RENAME:
4744                 str = gettext("Must also have the 'mount' and 'create'"
4745                     "\n\t\t\t\tability in the new parent");
4746                 break;
4747         case ZFS_DELEG_NOTE_ROLLBACK:
4748                 str = gettext("");
4749                 break;
4750         case ZFS_DELEG_NOTE_SEND:
4751                 str = gettext("");
4752                 break;
4753         case ZFS_DELEG_NOTE_SHARE:
4754                 str = gettext("Allows sharing file systems over NFS or SMB"
4755                     "\n\t\t\t\tprotocols");
4756                 break;
4757         case ZFS_DELEG_NOTE_SNAPSHOT:
4758                 str = gettext("");
4759                 break;
4760 /*
4761  *      case ZFS_DELEG_NOTE_VSCAN:
4762  *              str = gettext("");
4763  *              break;
4764  */
4765                 /* OTHER */
4766         case ZFS_DELEG_NOTE_GROUPQUOTA:
4767                 str = gettext("Allows accessing any groupquota@... property");
4768                 break;
4769         case ZFS_DELEG_NOTE_GROUPUSED:
4770                 str = gettext("Allows reading any groupused@... property");
4771                 break;
4772         case ZFS_DELEG_NOTE_USERPROP:
4773                 str = gettext("Allows changing any user property");
4774                 break;
4775         case ZFS_DELEG_NOTE_USERQUOTA:
4776                 str = gettext("Allows accessing any userquota@... property");
4777                 break;
4778         case ZFS_DELEG_NOTE_USERUSED:
4779                 str = gettext("Allows reading any userused@... property");
4780                 break;
4781                 /* other */
4782         default:
4783                 str = "";
4784         }
4785
4786         return (str);
4787 }
4788
4789 struct allow_opts {
4790         boolean_t local;
4791         boolean_t descend;
4792         boolean_t user;
4793         boolean_t group;
4794         boolean_t everyone;
4795         boolean_t create;
4796         boolean_t set;
4797         boolean_t recursive; /* unallow only */
4798         boolean_t prt_usage;
4799
4800         boolean_t prt_perms;
4801         char *who;
4802         char *perms;
4803         const char *dataset;
4804 };
4805
4806 static inline int
4807 prop_cmp(const void *a, const void *b)
4808 {
4809         const char *str1 = *(const char **)a;
4810         const char *str2 = *(const char **)b;
4811         return (strcmp(str1, str2));
4812 }
4813
4814 static void
4815 allow_usage(boolean_t un, boolean_t requested, const char *msg)
4816 {
4817         const char *opt_desc[] = {
4818                 "-h", gettext("show this help message and exit"),
4819                 "-l", gettext("set permission locally"),
4820                 "-d", gettext("set permission for descents"),
4821                 "-u", gettext("set permission for user"),
4822                 "-g", gettext("set permission for group"),
4823                 "-e", gettext("set permission for everyone"),
4824                 "-c", gettext("set create time permission"),
4825                 "-s", gettext("define permission set"),
4826                 /* unallow only */
4827                 "-r", gettext("remove permissions recursively"),
4828         };
4829         size_t unallow_size = sizeof (opt_desc) / sizeof (char *);
4830         size_t allow_size = unallow_size - 2;
4831         const char *props[ZFS_NUM_PROPS];
4832         int i;
4833         size_t count = 0;
4834         FILE *fp = requested ? stdout : stderr;
4835         zprop_desc_t *pdtbl = zfs_prop_get_table();
4836         const char *fmt = gettext("%-16s %-14s\t%s\n");
4837
4838         (void) fprintf(fp, gettext("Usage: %s\n"), get_usage(un ? HELP_UNALLOW :
4839             HELP_ALLOW));
4840         (void) fprintf(fp, gettext("Options:\n"));
4841         for (i = 0; i < (un ? unallow_size : allow_size); i++) {
4842                 const char *opt = opt_desc[i++];
4843                 const char *optdsc = opt_desc[i];
4844                 (void) fprintf(fp, gettext("  %-10s  %s\n"), opt, optdsc);
4845         }
4846
4847         (void) fprintf(fp, gettext("\nThe following permissions are "
4848             "supported:\n\n"));
4849         (void) fprintf(fp, fmt, gettext("NAME"), gettext("TYPE"),
4850             gettext("NOTES"));
4851         for (i = 0; i < ZFS_NUM_DELEG_NOTES; i++) {
4852                 const char *perm_name = zfs_deleg_perm_tbl[i].z_perm;
4853                 zfs_deleg_note_t perm_note = zfs_deleg_perm_tbl[i].z_note;
4854                 const char *perm_type = deleg_perm_type(perm_note);
4855                 const char *perm_comment = deleg_perm_comment(perm_note);
4856                 (void) fprintf(fp, fmt, perm_name, perm_type, perm_comment);
4857         }
4858
4859         for (i = 0; i < ZFS_NUM_PROPS; i++) {
4860                 zprop_desc_t *pd = &pdtbl[i];
4861                 if (pd->pd_visible != B_TRUE)
4862                         continue;
4863
4864                 if (pd->pd_attr == PROP_READONLY)
4865                         continue;
4866
4867                 props[count++] = pd->pd_name;
4868         }
4869         props[count] = NULL;
4870
4871         qsort(props, count, sizeof (char *), prop_cmp);
4872
4873         for (i = 0; i < count; i++)
4874                 (void) fprintf(fp, fmt, props[i], gettext("property"), "");
4875
4876         if (msg != NULL)
4877                 (void) fprintf(fp, gettext("\nzfs: error: %s"), msg);
4878
4879         exit(requested ? 0 : 2);
4880 }
4881
4882 static inline const char *
4883 munge_args(int argc, char **argv, boolean_t un, size_t expected_argc,
4884     char **permsp)
4885 {
4886         if (un && argc == expected_argc - 1)
4887                 *permsp = NULL;
4888         else if (argc == expected_argc)
4889                 *permsp = argv[argc - 2];
4890         else
4891                 allow_usage(un, B_FALSE,
4892                     gettext("wrong number of parameters\n"));
4893
4894         return (argv[argc - 1]);
4895 }
4896
4897 static void
4898 parse_allow_args(int argc, char **argv, boolean_t un, struct allow_opts *opts)
4899 {
4900         int uge_sum = opts->user + opts->group + opts->everyone;
4901         int csuge_sum = opts->create + opts->set + uge_sum;
4902         int ldcsuge_sum = csuge_sum + opts->local + opts->descend;
4903         int all_sum = un ? ldcsuge_sum + opts->recursive : ldcsuge_sum;
4904
4905         if (uge_sum > 1)
4906                 allow_usage(un, B_FALSE,
4907                     gettext("-u, -g, and -e are mutually exclusive\n"));
4908
4909         if (opts->prt_usage) {
4910                 if (argc == 0 && all_sum == 0)
4911                         allow_usage(un, B_TRUE, NULL);
4912                 else
4913                         usage(B_FALSE);
4914         }
4915
4916         if (opts->set) {
4917                 if (csuge_sum > 1)
4918                         allow_usage(un, B_FALSE,
4919                             gettext("invalid options combined with -s\n"));
4920
4921                 opts->dataset = munge_args(argc, argv, un, 3, &opts->perms);
4922                 if (argv[0][0] != '@')
4923                         allow_usage(un, B_FALSE,
4924                             gettext("invalid set name: missing '@' prefix\n"));
4925                 opts->who = argv[0];
4926         } else if (opts->create) {
4927                 if (ldcsuge_sum > 1)
4928                         allow_usage(un, B_FALSE,
4929                             gettext("invalid options combined with -c\n"));
4930                 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
4931         } else if (opts->everyone) {
4932                 if (csuge_sum > 1)
4933                         allow_usage(un, B_FALSE,
4934                             gettext("invalid options combined with -e\n"));
4935                 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
4936         } else if (uge_sum == 0 && argc > 0 && strcmp(argv[0], "everyone")
4937             == 0) {
4938                 opts->everyone = B_TRUE;
4939                 argc--;
4940                 argv++;
4941                 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
4942         } else if (argc == 1 && !un) {
4943                 opts->prt_perms = B_TRUE;
4944                 opts->dataset = argv[argc-1];
4945         } else {
4946                 opts->dataset = munge_args(argc, argv, un, 3, &opts->perms);
4947                 opts->who = argv[0];
4948         }
4949
4950         if (!opts->local && !opts->descend) {
4951                 opts->local = B_TRUE;
4952                 opts->descend = B_TRUE;
4953         }
4954 }
4955
4956 static void
4957 store_allow_perm(zfs_deleg_who_type_t type, boolean_t local, boolean_t descend,
4958     const char *who, char *perms, nvlist_t *top_nvl)
4959 {
4960         int i;
4961         char ld[2] = { '\0', '\0' };
4962         char who_buf[MAXNAMELEN + 32];
4963         char base_type = '\0';
4964         char set_type = '\0';
4965         nvlist_t *base_nvl = NULL;
4966         nvlist_t *set_nvl = NULL;
4967         nvlist_t *nvl;
4968
4969         if (nvlist_alloc(&base_nvl, NV_UNIQUE_NAME, 0) != 0)
4970                 nomem();
4971         if (nvlist_alloc(&set_nvl, NV_UNIQUE_NAME, 0) !=  0)
4972                 nomem();
4973
4974         switch (type) {
4975         case ZFS_DELEG_NAMED_SET_SETS:
4976         case ZFS_DELEG_NAMED_SET:
4977                 set_type = ZFS_DELEG_NAMED_SET_SETS;
4978                 base_type = ZFS_DELEG_NAMED_SET;
4979                 ld[0] = ZFS_DELEG_NA;
4980                 break;
4981         case ZFS_DELEG_CREATE_SETS:
4982         case ZFS_DELEG_CREATE:
4983                 set_type = ZFS_DELEG_CREATE_SETS;
4984                 base_type = ZFS_DELEG_CREATE;
4985                 ld[0] = ZFS_DELEG_NA;
4986                 break;
4987         case ZFS_DELEG_USER_SETS:
4988         case ZFS_DELEG_USER:
4989                 set_type = ZFS_DELEG_USER_SETS;
4990                 base_type = ZFS_DELEG_USER;
4991                 if (local)
4992                         ld[0] = ZFS_DELEG_LOCAL;
4993                 if (descend)
4994                         ld[1] = ZFS_DELEG_DESCENDENT;
4995                 break;
4996         case ZFS_DELEG_GROUP_SETS:
4997         case ZFS_DELEG_GROUP:
4998                 set_type = ZFS_DELEG_GROUP_SETS;
4999                 base_type = ZFS_DELEG_GROUP;
5000                 if (local)
5001                         ld[0] = ZFS_DELEG_LOCAL;
5002                 if (descend)
5003                         ld[1] = ZFS_DELEG_DESCENDENT;
5004                 break;
5005         case ZFS_DELEG_EVERYONE_SETS:
5006         case ZFS_DELEG_EVERYONE:
5007                 set_type = ZFS_DELEG_EVERYONE_SETS;
5008                 base_type = ZFS_DELEG_EVERYONE;
5009                 if (local)
5010                         ld[0] = ZFS_DELEG_LOCAL;
5011                 if (descend)
5012                         ld[1] = ZFS_DELEG_DESCENDENT;
5013                 break;
5014
5015         default:
5016                 assert(set_type != '\0' && base_type != '\0');
5017         }
5018
5019         if (perms != NULL) {
5020                 char *curr = perms;
5021                 char *end = curr + strlen(perms);
5022
5023                 while (curr < end) {
5024                         char *delim = strchr(curr, ',');
5025                         if (delim == NULL)
5026                                 delim = end;
5027                         else
5028                                 *delim = '\0';
5029
5030                         if (curr[0] == '@')
5031                                 nvl = set_nvl;
5032                         else
5033                                 nvl = base_nvl;
5034
5035                         (void) nvlist_add_boolean(nvl, curr);
5036                         if (delim != end)
5037                                 *delim = ',';
5038                         curr = delim + 1;
5039                 }
5040
5041                 for (i = 0; i < 2; i++) {
5042                         char locality = ld[i];
5043                         if (locality == 0)
5044                                 continue;
5045
5046                         if (!nvlist_empty(base_nvl)) {
5047                                 if (who != NULL)
5048                                         (void) snprintf(who_buf,
5049                                             sizeof (who_buf), "%c%c$%s",
5050                                             base_type, locality, who);
5051                                 else
5052                                         (void) snprintf(who_buf,
5053                                             sizeof (who_buf), "%c%c$",
5054                                             base_type, locality);
5055
5056                                 (void) nvlist_add_nvlist(top_nvl, who_buf,
5057                                     base_nvl);
5058                         }
5059
5060
5061                         if (!nvlist_empty(set_nvl)) {
5062                                 if (who != NULL)
5063                                         (void) snprintf(who_buf,
5064                                             sizeof (who_buf), "%c%c$%s",
5065                                             set_type, locality, who);
5066                                 else
5067                                         (void) snprintf(who_buf,
5068                                             sizeof (who_buf), "%c%c$",
5069                                             set_type, locality);
5070
5071                                 (void) nvlist_add_nvlist(top_nvl, who_buf,
5072                                     set_nvl);
5073                         }
5074                 }
5075         } else {
5076                 for (i = 0; i < 2; i++) {
5077                         char locality = ld[i];
5078                         if (locality == 0)
5079                                 continue;
5080
5081                         if (who != NULL)
5082                                 (void) snprintf(who_buf, sizeof (who_buf),
5083                                     "%c%c$%s", base_type, locality, who);
5084                         else
5085                                 (void) snprintf(who_buf, sizeof (who_buf),
5086                                     "%c%c$", base_type, locality);
5087                         (void) nvlist_add_boolean(top_nvl, who_buf);
5088
5089                         if (who != NULL)
5090                                 (void) snprintf(who_buf, sizeof (who_buf),
5091                                     "%c%c$%s", set_type, locality, who);
5092                         else
5093                                 (void) snprintf(who_buf, sizeof (who_buf),
5094                                     "%c%c$", set_type, locality);
5095                         (void) nvlist_add_boolean(top_nvl, who_buf);
5096                 }
5097         }
5098 }
5099
5100 static int
5101 construct_fsacl_list(boolean_t un, struct allow_opts *opts, nvlist_t **nvlp)
5102 {
5103         if (nvlist_alloc(nvlp, NV_UNIQUE_NAME, 0) != 0)
5104                 nomem();
5105
5106         if (opts->set) {
5107                 store_allow_perm(ZFS_DELEG_NAMED_SET, opts->local,
5108                     opts->descend, opts->who, opts->perms, *nvlp);
5109         } else if (opts->create) {
5110                 store_allow_perm(ZFS_DELEG_CREATE, opts->local,
5111                     opts->descend, NULL, opts->perms, *nvlp);
5112         } else if (opts->everyone) {
5113                 store_allow_perm(ZFS_DELEG_EVERYONE, opts->local,
5114                     opts->descend, NULL, opts->perms, *nvlp);
5115         } else {
5116                 char *curr = opts->who;
5117                 char *end = curr + strlen(curr);
5118
5119                 while (curr < end) {
5120                         const char *who;
5121                         zfs_deleg_who_type_t who_type = ZFS_DELEG_WHO_UNKNOWN;
5122                         char *endch;
5123                         char *delim = strchr(curr, ',');
5124                         char errbuf[256];
5125                         char id[64];
5126                         struct passwd *p = NULL;
5127                         struct group *g = NULL;
5128
5129                         uid_t rid;
5130                         if (delim == NULL)
5131                                 delim = end;
5132                         else
5133                                 *delim = '\0';
5134
5135                         rid = (uid_t)strtol(curr, &endch, 0);
5136                         if (opts->user) {
5137                                 who_type = ZFS_DELEG_USER;
5138                                 if (*endch != '\0')
5139                                         p = getpwnam(curr);
5140                                 else
5141                                         p = getpwuid(rid);
5142
5143                                 if (p != NULL)
5144                                         rid = p->pw_uid;
5145                                 else {
5146                                         (void) snprintf(errbuf, 256, gettext(
5147                                             "invalid user %s"), curr);
5148                                         allow_usage(un, B_TRUE, errbuf);
5149                                 }
5150                         } else if (opts->group) {
5151                                 who_type = ZFS_DELEG_GROUP;
5152                                 if (*endch != '\0')
5153                                         g = getgrnam(curr);
5154                                 else
5155                                         g = getgrgid(rid);
5156
5157                                 if (g != NULL)
5158                                         rid = g->gr_gid;
5159                                 else {
5160                                         (void) snprintf(errbuf, 256, gettext(
5161                                             "invalid group %s"),  curr);
5162                                         allow_usage(un, B_TRUE, errbuf);
5163                                 }
5164                         } else {
5165                                 if (*endch != '\0') {
5166                                         p = getpwnam(curr);
5167                                 } else {
5168                                         p = getpwuid(rid);
5169                                 }
5170
5171                                 if (p == NULL) {
5172                                         if (*endch != '\0') {
5173                                                 g = getgrnam(curr);
5174                                         } else {
5175                                                 g = getgrgid(rid);
5176                                         }
5177                                 }
5178
5179                                 if (p != NULL) {
5180                                         who_type = ZFS_DELEG_USER;
5181                                         rid = p->pw_uid;
5182                                 } else if (g != NULL) {
5183                                         who_type = ZFS_DELEG_GROUP;
5184                                         rid = g->gr_gid;
5185                                 } else {
5186                                         (void) snprintf(errbuf, 256, gettext(
5187                                             "invalid user/group %s"), curr);
5188                                         allow_usage(un, B_TRUE, errbuf);
5189                                 }
5190                         }
5191
5192                         (void) sprintf(id, "%u", rid);
5193                         who = id;
5194
5195                         store_allow_perm(who_type, opts->local,
5196                             opts->descend, who, opts->perms, *nvlp);
5197                         curr = delim + 1;
5198                 }
5199         }
5200
5201         return (0);
5202 }
5203
5204 static void
5205 print_set_creat_perms(uu_avl_t *who_avl)
5206 {
5207         const char *sc_title[] = {
5208                 gettext("Permission sets:\n"),
5209                 gettext("Create time permissions:\n"),
5210                 NULL
5211         };
5212         const char **title_ptr = sc_title;
5213         who_perm_node_t *who_node = NULL;
5214         int prev_weight = -1;
5215
5216         for (who_node = uu_avl_first(who_avl); who_node != NULL;
5217             who_node = uu_avl_next(who_avl, who_node)) {
5218                 uu_avl_t *avl = who_node->who_perm.who_deleg_perm_avl;
5219                 zfs_deleg_who_type_t who_type = who_node->who_perm.who_type;
5220                 const char *who_name = who_node->who_perm.who_name;
5221                 int weight = who_type2weight(who_type);
5222                 boolean_t first = B_TRUE;
5223                 deleg_perm_node_t *deleg_node;
5224
5225                 if (prev_weight != weight) {
5226                         (void) printf(*title_ptr++);
5227                         prev_weight = weight;
5228                 }
5229
5230                 if (who_name == NULL || strnlen(who_name, 1) == 0)
5231                         (void) printf("\t");
5232                 else
5233                         (void) printf("\t%s ", who_name);
5234
5235                 for (deleg_node = uu_avl_first(avl); deleg_node != NULL;
5236                     deleg_node = uu_avl_next(avl, deleg_node)) {
5237                         if (first) {
5238                                 (void) printf("%s",
5239                                     deleg_node->dpn_perm.dp_name);
5240                                 first = B_FALSE;
5241                         } else
5242                                 (void) printf(",%s",
5243                                     deleg_node->dpn_perm.dp_name);
5244                 }
5245
5246                 (void) printf("\n");
5247         }
5248 }
5249
5250 static void
5251 print_uge_deleg_perms(uu_avl_t *who_avl, boolean_t local, boolean_t descend,
5252     const char *title)
5253 {
5254         who_perm_node_t *who_node = NULL;
5255         boolean_t prt_title = B_TRUE;
5256         uu_avl_walk_t *walk;
5257
5258         if ((walk = uu_avl_walk_start(who_avl, UU_WALK_ROBUST)) == NULL)
5259                 nomem();
5260
5261         while ((who_node = uu_avl_walk_next(walk)) != NULL) {
5262                 const char *who_name = who_node->who_perm.who_name;
5263                 const char *nice_who_name = who_node->who_perm.who_ug_name;
5264                 uu_avl_t *avl = who_node->who_perm.who_deleg_perm_avl;
5265                 zfs_deleg_who_type_t who_type = who_node->who_perm.who_type;
5266                 char delim = ' ';
5267                 deleg_perm_node_t *deleg_node;
5268                 boolean_t prt_who = B_TRUE;
5269
5270                 for (deleg_node = uu_avl_first(avl);
5271                     deleg_node != NULL;
5272                     deleg_node = uu_avl_next(avl, deleg_node)) {
5273                         if (local != deleg_node->dpn_perm.dp_local ||
5274                             descend != deleg_node->dpn_perm.dp_descend)
5275                                 continue;
5276
5277                         if (prt_who) {
5278                                 const char *who = NULL;
5279                                 if (prt_title) {
5280                                         prt_title = B_FALSE;
5281                                         (void) printf(title);
5282                                 }
5283
5284                                 switch (who_type) {
5285                                 case ZFS_DELEG_USER_SETS:
5286                                 case ZFS_DELEG_USER:
5287                                         who = gettext("user");
5288                                         if (nice_who_name)
5289                                                 who_name  = nice_who_name;
5290                                         break;
5291                                 case ZFS_DELEG_GROUP_SETS:
5292                                 case ZFS_DELEG_GROUP:
5293                                         who = gettext("group");
5294                                         if (nice_who_name)
5295                                                 who_name  = nice_who_name;
5296                                         break;
5297                                 case ZFS_DELEG_EVERYONE_SETS:
5298                                 case ZFS_DELEG_EVERYONE:
5299                                         who = gettext("everyone");
5300                                         who_name = NULL;
5301                                         break;
5302
5303                                 default:
5304                                         assert(who != NULL);
5305                                 }
5306
5307                                 prt_who = B_FALSE;
5308                                 if (who_name == NULL)
5309                                         (void) printf("\t%s", who);
5310                                 else
5311                                         (void) printf("\t%s %s", who, who_name);
5312                         }
5313
5314                         (void) printf("%c%s", delim,
5315                             deleg_node->dpn_perm.dp_name);
5316                         delim = ',';
5317                 }
5318
5319                 if (!prt_who)
5320                         (void) printf("\n");
5321         }
5322
5323         uu_avl_walk_end(walk);
5324 }
5325
5326 static void
5327 print_fs_perms(fs_perm_set_t *fspset)
5328 {
5329         fs_perm_node_t *node = NULL;
5330         char buf[MAXNAMELEN + 32];
5331         const char *dsname = buf;
5332
5333         for (node = uu_list_first(fspset->fsps_list); node != NULL;
5334             node = uu_list_next(fspset->fsps_list, node)) {
5335                 uu_avl_t *sc_avl = node->fspn_fsperm.fsp_sc_avl;
5336                 uu_avl_t *uge_avl = node->fspn_fsperm.fsp_uge_avl;
5337                 int left = 0;
5338
5339                 (void) snprintf(buf, sizeof (buf),
5340                     gettext("---- Permissions on %s "),
5341                     node->fspn_fsperm.fsp_name);
5342                 (void) printf(dsname);
5343                 left = 70 - strlen(buf);
5344                 while (left-- > 0)
5345                         (void) printf("-");
5346                 (void) printf("\n");
5347
5348                 print_set_creat_perms(sc_avl);
5349                 print_uge_deleg_perms(uge_avl, B_TRUE, B_FALSE,
5350                     gettext("Local permissions:\n"));
5351                 print_uge_deleg_perms(uge_avl, B_FALSE, B_TRUE,
5352                     gettext("Descendent permissions:\n"));
5353                 print_uge_deleg_perms(uge_avl, B_TRUE, B_TRUE,
5354                     gettext("Local+Descendent permissions:\n"));
5355         }
5356 }
5357
5358 static fs_perm_set_t fs_perm_set = { NULL, NULL, NULL, NULL };
5359
5360 struct deleg_perms {
5361         boolean_t un;
5362         nvlist_t *nvl;
5363 };
5364
5365 static int
5366 set_deleg_perms(zfs_handle_t *zhp, void *data)
5367 {
5368         struct deleg_perms *perms = (struct deleg_perms *)data;
5369         zfs_type_t zfs_type = zfs_get_type(zhp);
5370
5371         if (zfs_type != ZFS_TYPE_FILESYSTEM && zfs_type != ZFS_TYPE_VOLUME)
5372                 return (0);
5373
5374         return (zfs_set_fsacl(zhp, perms->un, perms->nvl));
5375 }
5376
5377 static int
5378 zfs_do_allow_unallow_impl(int argc, char **argv, boolean_t un)
5379 {
5380         zfs_handle_t *zhp;
5381         nvlist_t *perm_nvl = NULL;
5382         nvlist_t *update_perm_nvl = NULL;
5383         int error = 1;
5384         int c;
5385         struct allow_opts opts = { 0 };
5386
5387         const char *optstr = un ? "ldugecsrh" : "ldugecsh";
5388
5389         /* check opts */
5390         while ((c = getopt(argc, argv, optstr)) != -1) {
5391                 switch (c) {
5392                 case 'l':
5393                         opts.local = B_TRUE;
5394                         break;
5395                 case 'd':
5396                         opts.descend = B_TRUE;
5397                         break;
5398                 case 'u':
5399                         opts.user = B_TRUE;
5400                         break;
5401                 case 'g':
5402                         opts.group = B_TRUE;
5403                         break;
5404                 case 'e':
5405                         opts.everyone = B_TRUE;
5406                         break;
5407                 case 's':
5408                         opts.set = B_TRUE;
5409                         break;
5410                 case 'c':
5411                         opts.create = B_TRUE;
5412                         break;
5413                 case 'r':
5414                         opts.recursive = B_TRUE;
5415                         break;
5416                 case ':':
5417                         (void) fprintf(stderr, gettext("missing argument for "
5418                             "'%c' option\n"), optopt);
5419                         usage(B_FALSE);
5420                         break;
5421                 case 'h':
5422                         opts.prt_usage = B_TRUE;
5423                         break;
5424                 case '?':
5425                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5426                             optopt);
5427                         usage(B_FALSE);
5428                 }
5429         }
5430
5431         argc -= optind;
5432         argv += optind;
5433
5434         /* check arguments */
5435         parse_allow_args(argc, argv, un, &opts);
5436
5437         /* try to open the dataset */
5438         if ((zhp = zfs_open(g_zfs, opts.dataset, ZFS_TYPE_FILESYSTEM |
5439             ZFS_TYPE_VOLUME)) == NULL) {
5440                 (void) fprintf(stderr, "Failed to open dataset: %s\n",
5441                     opts.dataset);
5442                 return (-1);
5443         }
5444
5445         if (zfs_get_fsacl(zhp, &perm_nvl) != 0)
5446                 goto cleanup2;
5447
5448         fs_perm_set_init(&fs_perm_set);
5449         if (parse_fs_perm_set(&fs_perm_set, perm_nvl) != 0) {
5450                 (void) fprintf(stderr, "Failed to parse fsacl permissions\n");
5451                 goto cleanup1;
5452         }
5453
5454         if (opts.prt_perms)
5455                 print_fs_perms(&fs_perm_set);
5456         else {
5457                 (void) construct_fsacl_list(un, &opts, &update_perm_nvl);
5458                 if (zfs_set_fsacl(zhp, un, update_perm_nvl) != 0)
5459                         goto cleanup0;
5460
5461                 if (un && opts.recursive) {
5462                         struct deleg_perms data = { un, update_perm_nvl };
5463                         if (zfs_iter_filesystems(zhp, set_deleg_perms,
5464                             &data) != 0)
5465                                 goto cleanup0;
5466                 }
5467         }
5468
5469         error = 0;
5470
5471 cleanup0:
5472         nvlist_free(perm_nvl);
5473         nvlist_free(update_perm_nvl);
5474 cleanup1:
5475         fs_perm_set_fini(&fs_perm_set);
5476 cleanup2:
5477         zfs_close(zhp);
5478
5479         return (error);
5480 }
5481
5482 static int
5483 zfs_do_allow(int argc, char **argv)
5484 {
5485         return (zfs_do_allow_unallow_impl(argc, argv, B_FALSE));
5486 }
5487
5488 static int
5489 zfs_do_unallow(int argc, char **argv)
5490 {
5491         return (zfs_do_allow_unallow_impl(argc, argv, B_TRUE));
5492 }
5493
5494 static int
5495 zfs_do_hold_rele_impl(int argc, char **argv, boolean_t holding)
5496 {
5497         int errors = 0;
5498         int i;
5499         const char *tag;
5500         boolean_t recursive = B_FALSE;
5501         const char *opts = holding ? "rt" : "r";
5502         int c;
5503
5504         /* check options */
5505         while ((c = getopt(argc, argv, opts)) != -1) {
5506                 switch (c) {
5507                 case 'r':
5508                         recursive = B_TRUE;
5509                         break;
5510                 case '?':
5511                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5512                             optopt);
5513                         usage(B_FALSE);
5514                 }
5515         }
5516
5517         argc -= optind;
5518         argv += optind;
5519
5520         /* check number of arguments */
5521         if (argc < 2)
5522                 usage(B_FALSE);
5523
5524         tag = argv[0];
5525         --argc;
5526         ++argv;
5527
5528         if (holding && tag[0] == '.') {
5529                 /* tags starting with '.' are reserved for libzfs */
5530                 (void) fprintf(stderr, gettext("tag may not start with '.'\n"));
5531                 usage(B_FALSE);
5532         }
5533
5534         for (i = 0; i < argc; ++i) {
5535                 zfs_handle_t *zhp;
5536                 char parent[ZFS_MAX_DATASET_NAME_LEN];
5537                 const char *delim;
5538                 char *path = argv[i];
5539
5540                 delim = strchr(path, '@');
5541                 if (delim == NULL) {
5542                         (void) fprintf(stderr,
5543                             gettext("'%s' is not a snapshot\n"), path);
5544                         ++errors;
5545                         continue;
5546                 }
5547                 (void) strncpy(parent, path, delim - path);
5548                 parent[delim - path] = '\0';
5549
5550                 zhp = zfs_open(g_zfs, parent,
5551                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
5552                 if (zhp == NULL) {
5553                         ++errors;
5554                         continue;
5555                 }
5556                 if (holding) {
5557                         if (zfs_hold(zhp, delim+1, tag, recursive, -1) != 0)
5558                                 ++errors;
5559                 } else {
5560                         if (zfs_release(zhp, delim+1, tag, recursive) != 0)
5561                                 ++errors;
5562                 }
5563                 zfs_close(zhp);
5564         }
5565
5566         return (errors != 0);
5567 }
5568
5569 /*
5570  * zfs hold [-r] [-t] <tag> <snap> ...
5571  *
5572  *      -r      Recursively hold
5573  *
5574  * Apply a user-hold with the given tag to the list of snapshots.
5575  */
5576 static int
5577 zfs_do_hold(int argc, char **argv)
5578 {
5579         return (zfs_do_hold_rele_impl(argc, argv, B_TRUE));
5580 }
5581
5582 /*
5583  * zfs release [-r] <tag> <snap> ...
5584  *
5585  *      -r      Recursively release
5586  *
5587  * Release a user-hold with the given tag from the list of snapshots.
5588  */
5589 static int
5590 zfs_do_release(int argc, char **argv)
5591 {
5592         return (zfs_do_hold_rele_impl(argc, argv, B_FALSE));
5593 }
5594
5595 typedef struct holds_cbdata {
5596         boolean_t       cb_recursive;
5597         const char      *cb_snapname;
5598         nvlist_t        **cb_nvlp;
5599         size_t          cb_max_namelen;
5600         size_t          cb_max_taglen;
5601 } holds_cbdata_t;
5602
5603 #define STRFTIME_FMT_STR "%a %b %e %k:%M %Y"
5604 #define DATETIME_BUF_LEN (32)
5605 /*
5606  *
5607  */
5608 static void
5609 print_holds(boolean_t scripted, boolean_t literal, size_t nwidth,
5610     size_t tagwidth, nvlist_t *nvl)
5611 {
5612         int i;
5613         nvpair_t *nvp = NULL;
5614         char *hdr_cols[] = { "NAME", "TAG", "TIMESTAMP" };
5615         const char *col;
5616
5617         if (!scripted) {
5618                 for (i = 0; i < 3; i++) {
5619                         col = gettext(hdr_cols[i]);
5620                         if (i < 2)
5621                                 (void) printf("%-*s  ", i ? tagwidth : nwidth,
5622                                     col);
5623                         else
5624                                 (void) printf("%s\n", col);
5625                 }
5626         }
5627
5628         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
5629                 char *zname = nvpair_name(nvp);
5630                 nvlist_t *nvl2;
5631                 nvpair_t *nvp2 = NULL;
5632                 (void) nvpair_value_nvlist(nvp, &nvl2);
5633                 while ((nvp2 = nvlist_next_nvpair(nvl2, nvp2)) != NULL) {
5634                         char tsbuf[DATETIME_BUF_LEN];
5635                         char *tagname = nvpair_name(nvp2);
5636                         uint64_t val = 0;
5637                         time_t time;
5638                         struct tm t;
5639                         char sep = scripted ? '\t' : ' ';
5640                         size_t sepnum = scripted ? 1 : 2;
5641
5642                         (void) nvpair_value_uint64(nvp2, &val);
5643                         if (literal)
5644                                 snprintf(tsbuf, DATETIME_BUF_LEN, "%llu", val);
5645                         else {
5646                                 time = (time_t)val;
5647                                 (void) localtime_r(&time, &t);
5648                                 (void) strftime(tsbuf, DATETIME_BUF_LEN,
5649                                     gettext(STRFTIME_FMT_STR), &t);
5650                         }
5651
5652                         (void) printf("%-*s%*c%-*s%*c%s\n", nwidth, zname,
5653                             sepnum, sep, tagwidth, tagname, sepnum, sep, tsbuf);
5654                 }
5655         }
5656 }
5657
5658 /*
5659  * Generic callback function to list a dataset or snapshot.
5660  */
5661 static int
5662 holds_callback(zfs_handle_t *zhp, void *data)
5663 {
5664         holds_cbdata_t *cbp = data;
5665         nvlist_t *top_nvl = *cbp->cb_nvlp;
5666         nvlist_t *nvl = NULL;
5667         nvpair_t *nvp = NULL;
5668         const char *zname = zfs_get_name(zhp);
5669         size_t znamelen = strlen(zname);
5670
5671         if (cbp->cb_recursive && cbp->cb_snapname != NULL) {
5672                 const char *snapname;
5673                 char *delim  = strchr(zname, '@');
5674                 if (delim == NULL)
5675                         return (0);
5676
5677                 snapname = delim + 1;
5678                 if (strcmp(cbp->cb_snapname, snapname))
5679                         return (0);
5680         }
5681
5682         if (zfs_get_holds(zhp, &nvl) != 0)
5683                 return (-1);
5684
5685         if (znamelen > cbp->cb_max_namelen)
5686                 cbp->cb_max_namelen  = znamelen;
5687
5688         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
5689                 const char *tag = nvpair_name(nvp);
5690                 size_t taglen = strlen(tag);
5691                 if (taglen > cbp->cb_max_taglen)
5692                         cbp->cb_max_taglen  = taglen;
5693         }
5694
5695         return (nvlist_add_nvlist(top_nvl, zname, nvl));
5696 }
5697
5698 /*
5699  * zfs holds [-Hp] [-r | -d max] <dataset|snap> ...
5700  *
5701  *      -H      Suppress header output
5702  *      -p      Output literal values
5703  *      -r      Recursively search for holds
5704  *      -d max  Limit depth of recursive search
5705  */
5706 static int
5707 zfs_do_holds(int argc, char **argv)
5708 {
5709         int errors = 0;
5710         int c;
5711         int i;
5712         boolean_t scripted = B_FALSE;
5713         boolean_t literal = B_FALSE;
5714         boolean_t recursive = B_FALSE;
5715         const char *opts = "d:rHp";
5716         nvlist_t *nvl;
5717
5718         int types = ZFS_TYPE_SNAPSHOT;
5719         holds_cbdata_t cb = { 0 };
5720
5721         int limit = 0;
5722         int ret = 0;
5723         int flags = 0;
5724
5725         /* check options */
5726         while ((c = getopt(argc, argv, opts)) != -1) {
5727                 switch (c) {
5728                 case 'd':
5729                         limit = parse_depth(optarg, &flags);
5730                         recursive = B_TRUE;
5731                         break;
5732                 case 'r':
5733                         recursive = B_TRUE;
5734                         break;
5735                 case 'H':
5736                         scripted = B_TRUE;
5737                         break;
5738                 case 'p':
5739                         literal = B_TRUE;
5740                         break;
5741                 case '?':
5742                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5743                             optopt);
5744                         usage(B_FALSE);
5745                 }
5746         }
5747
5748         if (recursive) {
5749                 types |= ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME;
5750                 flags |= ZFS_ITER_RECURSE;
5751         }
5752
5753         argc -= optind;
5754         argv += optind;
5755
5756         /* check number of arguments */
5757         if (argc < 1)
5758                 usage(B_FALSE);
5759
5760         if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0)
5761                 nomem();
5762
5763         for (i = 0; i < argc; ++i) {
5764                 char *snapshot = argv[i];
5765                 const char *delim;
5766                 const char *snapname = NULL;
5767
5768                 delim = strchr(snapshot, '@');
5769                 if (delim != NULL) {
5770                         snapname = delim + 1;
5771                         if (recursive)
5772                                 snapshot[delim - snapshot] = '\0';
5773                 }
5774
5775                 cb.cb_recursive = recursive;
5776                 cb.cb_snapname = snapname;
5777                 cb.cb_nvlp = &nvl;
5778
5779                 /*
5780                  *  1. collect holds data, set format options
5781                  */
5782                 ret = zfs_for_each(argc, argv, flags, types, NULL, NULL, limit,
5783                     holds_callback, &cb);
5784                 if (ret != 0)
5785                         ++errors;
5786         }
5787
5788         /*
5789          *  2. print holds data
5790          */
5791         print_holds(scripted, literal, cb.cb_max_namelen, cb.cb_max_taglen,
5792             nvl);
5793
5794         if (nvlist_empty(nvl))
5795                 (void) printf(gettext("no datasets available\n"));
5796
5797         nvlist_free(nvl);
5798
5799         return (0 != errors);
5800 }
5801
5802 #define CHECK_SPINNER 30
5803 #define SPINNER_TIME 3          /* seconds */
5804 #define MOUNT_TIME 5            /* seconds */
5805
5806 static int
5807 get_one_dataset(zfs_handle_t *zhp, void *data)
5808 {
5809         static char *spin[] = { "-", "\\", "|", "/" };
5810         static int spinval = 0;
5811         static int spincheck = 0;
5812         static time_t last_spin_time = (time_t)0;
5813         get_all_cb_t *cbp = data;
5814         zfs_type_t type = zfs_get_type(zhp);
5815
5816         if (cbp->cb_verbose) {
5817                 if (--spincheck < 0) {
5818                         time_t now = time(NULL);
5819                         if (last_spin_time + SPINNER_TIME < now) {
5820                                 update_progress(spin[spinval++ % 4]);
5821                                 last_spin_time = now;
5822                         }
5823                         spincheck = CHECK_SPINNER;
5824                 }
5825         }
5826
5827         /*
5828          * Interate over any nested datasets.
5829          */
5830         if (zfs_iter_filesystems(zhp, get_one_dataset, data) != 0) {
5831                 zfs_close(zhp);
5832                 return (1);
5833         }
5834
5835         /*
5836          * Skip any datasets whose type does not match.
5837          */
5838         if ((type & ZFS_TYPE_FILESYSTEM) == 0) {
5839                 zfs_close(zhp);
5840                 return (0);
5841         }
5842         libzfs_add_handle(cbp, zhp);
5843         assert(cbp->cb_used <= cbp->cb_alloc);
5844
5845         return (0);
5846 }
5847
5848 static void
5849 get_all_datasets(zfs_handle_t ***dslist, size_t *count, boolean_t verbose)
5850 {
5851         get_all_cb_t cb = { 0 };
5852         cb.cb_verbose = verbose;
5853         cb.cb_getone = get_one_dataset;
5854
5855         if (verbose)
5856                 set_progress_header(gettext("Reading ZFS config"));
5857         (void) zfs_iter_root(g_zfs, get_one_dataset, &cb);
5858
5859         *dslist = cb.cb_handles;
5860         *count = cb.cb_used;
5861
5862         if (verbose)
5863                 finish_progress(gettext("done."));
5864 }
5865
5866 /*
5867  * Generic callback for sharing or mounting filesystems.  Because the code is so
5868  * similar, we have a common function with an extra parameter to determine which
5869  * mode we are using.
5870  */
5871 #define OP_SHARE        0x1
5872 #define OP_MOUNT        0x2
5873
5874 /*
5875  * Share or mount a dataset.
5876  */
5877 static int
5878 share_mount_one(zfs_handle_t *zhp, int op, int flags, char *protocol,
5879     boolean_t explicit, const char *options)
5880 {
5881         char mountpoint[ZFS_MAXPROPLEN];
5882         char shareopts[ZFS_MAXPROPLEN];
5883         char smbshareopts[ZFS_MAXPROPLEN];
5884         const char *cmdname = op == OP_SHARE ? "share" : "mount";
5885         struct mnttab mnt;
5886         uint64_t zoned, canmount;
5887         boolean_t shared_nfs, shared_smb;
5888
5889         assert(zfs_get_type(zhp) & ZFS_TYPE_FILESYSTEM);
5890
5891         /*
5892          * Check to make sure we can mount/share this dataset.  If we
5893          * are in the global zone and the filesystem is exported to a
5894          * local zone, or if we are in a local zone and the
5895          * filesystem is not exported, then it is an error.
5896          */
5897         zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED);
5898
5899         if (zoned && getzoneid() == GLOBAL_ZONEID) {
5900                 if (!explicit)
5901                         return (0);
5902
5903                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5904                     "dataset is exported to a local zone\n"), cmdname,
5905                     zfs_get_name(zhp));
5906                 return (1);
5907
5908         } else if (!zoned && getzoneid() != GLOBAL_ZONEID) {
5909                 if (!explicit)
5910                         return (0);
5911
5912                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5913                     "permission denied\n"), cmdname,
5914                     zfs_get_name(zhp));
5915                 return (1);
5916         }
5917
5918         /*
5919          * Ignore any filesystems which don't apply to us. This
5920          * includes those with a legacy mountpoint, or those with
5921          * legacy share options.
5922          */
5923         verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
5924             sizeof (mountpoint), NULL, NULL, 0, B_FALSE) == 0);
5925         verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, shareopts,
5926             sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0);
5927         verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshareopts,
5928             sizeof (smbshareopts), NULL, NULL, 0, B_FALSE) == 0);
5929
5930         if (op == OP_SHARE && strcmp(shareopts, "off") == 0 &&
5931             strcmp(smbshareopts, "off") == 0) {
5932                 if (!explicit)
5933                         return (0);
5934
5935                 (void) fprintf(stderr, gettext("cannot share '%s': "
5936                     "legacy share\n"), zfs_get_name(zhp));
5937                 (void) fprintf(stderr, gettext("to "
5938                     "share this filesystem set "
5939                     "sharenfs property on\n"));
5940                 return (1);
5941         }
5942
5943         /*
5944          * We cannot share or mount legacy filesystems. If the
5945          * shareopts is non-legacy but the mountpoint is legacy, we
5946          * treat it as a legacy share.
5947          */
5948         if (strcmp(mountpoint, "legacy") == 0) {
5949                 if (!explicit)
5950                         return (0);
5951
5952                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5953                     "legacy mountpoint\n"), cmdname, zfs_get_name(zhp));
5954                 (void) fprintf(stderr, gettext("use %s(8) to "
5955                     "%s this filesystem\n"), cmdname, cmdname);
5956                 return (1);
5957         }
5958
5959         if (strcmp(mountpoint, "none") == 0) {
5960                 if (!explicit)
5961                         return (0);
5962
5963                 (void) fprintf(stderr, gettext("cannot %s '%s': no "
5964                     "mountpoint set\n"), cmdname, zfs_get_name(zhp));
5965                 return (1);
5966         }
5967
5968         /*
5969          * canmount     explicit        outcome
5970          * on           no              pass through
5971          * on           yes             pass through
5972          * off          no              return 0
5973          * off          yes             display error, return 1
5974          * noauto       no              return 0
5975          * noauto       yes             pass through
5976          */
5977         canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT);
5978         if (canmount == ZFS_CANMOUNT_OFF) {
5979                 if (!explicit)
5980                         return (0);
5981
5982                 (void) fprintf(stderr, gettext("cannot %s '%s': "
5983                     "'canmount' property is set to 'off'\n"), cmdname,
5984                     zfs_get_name(zhp));
5985                 return (1);
5986         } else if (canmount == ZFS_CANMOUNT_NOAUTO && !explicit) {
5987                 return (0);
5988         }
5989
5990         /*
5991          * If this filesystem is inconsistent and has a receive resume
5992          * token, we can not mount it.
5993          */
5994         if (zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) &&
5995             zfs_prop_get(zhp, ZFS_PROP_RECEIVE_RESUME_TOKEN,
5996             NULL, 0, NULL, NULL, 0, B_TRUE) == 0) {
5997                 if (!explicit)
5998                         return (0);
5999
6000                 (void) fprintf(stderr, gettext("cannot %s '%s': "
6001                     "Contains partially-completed state from "
6002                     "\"zfs receive -r\", which can be resumed with "
6003                     "\"zfs send -t\"\n"),
6004                     cmdname, zfs_get_name(zhp));
6005                 return (1);
6006         }
6007
6008         /*
6009          * At this point, we have verified that the mountpoint and/or
6010          * shareopts are appropriate for auto management. If the
6011          * filesystem is already mounted or shared, return (failing
6012          * for explicit requests); otherwise mount or share the
6013          * filesystem.
6014          */
6015         switch (op) {
6016         case OP_SHARE:
6017
6018                 shared_nfs = zfs_is_shared_nfs(zhp, NULL);
6019                 shared_smb = zfs_is_shared_smb(zhp, NULL);
6020
6021                 if ((shared_nfs && shared_smb) ||
6022                     (shared_nfs && strcmp(shareopts, "on") == 0 &&
6023                     strcmp(smbshareopts, "off") == 0) ||
6024                     (shared_smb && strcmp(smbshareopts, "on") == 0 &&
6025                     strcmp(shareopts, "off") == 0)) {
6026                         if (!explicit)
6027                                 return (0);
6028
6029                         (void) fprintf(stderr, gettext("cannot share "
6030                             "'%s': filesystem already shared\n"),
6031                             zfs_get_name(zhp));
6032                         return (1);
6033                 }
6034
6035                 if (!zfs_is_mounted(zhp, NULL) &&
6036                     zfs_mount(zhp, NULL, 0) != 0)
6037                         return (1);
6038
6039                 if (protocol == NULL) {
6040                         if (zfs_shareall(zhp) != 0)
6041                                 return (1);
6042                 } else if (strcmp(protocol, "nfs") == 0) {
6043                         if (zfs_share_nfs(zhp))
6044                                 return (1);
6045                 } else if (strcmp(protocol, "smb") == 0) {
6046                         if (zfs_share_smb(zhp))
6047                                 return (1);
6048                 } else {
6049                         (void) fprintf(stderr, gettext("cannot share "
6050                             "'%s': invalid share type '%s' "
6051                             "specified\n"),
6052                             zfs_get_name(zhp), protocol);
6053                         return (1);
6054                 }
6055
6056                 break;
6057
6058         case OP_MOUNT:
6059                 if (options == NULL)
6060                         mnt.mnt_mntopts = "";
6061                 else
6062                         mnt.mnt_mntopts = (char *)options;
6063
6064                 if (!hasmntopt(&mnt, MNTOPT_REMOUNT) &&
6065                     zfs_is_mounted(zhp, NULL)) {
6066                         if (!explicit)
6067                                 return (0);
6068
6069                         (void) fprintf(stderr, gettext("cannot mount "
6070                             "'%s': filesystem already mounted\n"),
6071                             zfs_get_name(zhp));
6072                         return (1);
6073                 }
6074
6075                 if (zfs_mount(zhp, options, flags) != 0)
6076                         return (1);
6077                 break;
6078         }
6079
6080         return (0);
6081 }
6082
6083 /*
6084  * Reports progress in the form "(current/total)".  Not thread-safe.
6085  */
6086 static void
6087 report_mount_progress(int current, int total)
6088 {
6089         static time_t last_progress_time = 0;
6090         time_t now = time(NULL);
6091         char info[32];
6092
6093         /* report 1..n instead of 0..n-1 */
6094         ++current;
6095
6096         /* display header if we're here for the first time */
6097         if (current == 1) {
6098                 set_progress_header(gettext("Mounting ZFS filesystems"));
6099         } else if (current != total && last_progress_time + MOUNT_TIME >= now) {
6100                 /* too soon to report again */
6101                 return;
6102         }
6103
6104         last_progress_time = now;
6105
6106         (void) sprintf(info, "(%d/%d)", current, total);
6107
6108         if (current == total)
6109                 finish_progress(info);
6110         else
6111                 update_progress(info);
6112 }
6113
6114 static void
6115 append_options(char *mntopts, char *newopts)
6116 {
6117         int len = strlen(mntopts);
6118
6119         /* original length plus new string to append plus 1 for the comma */
6120         if (len + 1 + strlen(newopts) >= MNT_LINE_MAX) {
6121                 (void) fprintf(stderr, gettext("the opts argument for "
6122                     "'%c' option is too long (more than %d chars)\n"),
6123                     "-o", MNT_LINE_MAX);
6124                 usage(B_FALSE);
6125         }
6126
6127         if (*mntopts)
6128                 mntopts[len++] = ',';
6129
6130         (void) strcpy(&mntopts[len], newopts);
6131 }
6132
6133 static int
6134 share_mount(int op, int argc, char **argv)
6135 {
6136         int do_all = 0;
6137         boolean_t verbose = B_FALSE;
6138         int c, ret = 0;
6139         char *options = NULL;
6140         int flags = 0;
6141
6142         /* check options */
6143         while ((c = getopt(argc, argv, op == OP_MOUNT ? ":avo:O" : "a"))
6144             != -1) {
6145                 switch (c) {
6146                 case 'a':
6147                         do_all = 1;
6148                         break;
6149                 case 'v':
6150                         verbose = B_TRUE;
6151                         break;
6152                 case 'o':
6153                         if (*optarg == '\0') {
6154                                 (void) fprintf(stderr, gettext("empty mount "
6155                                     "options (-o) specified\n"));
6156                                 usage(B_FALSE);
6157                         }
6158
6159                         if (options == NULL)
6160                                 options = safe_malloc(MNT_LINE_MAX + 1);
6161
6162                         /* option validation is done later */
6163                         append_options(options, optarg);
6164                         break;
6165
6166                 case 'O':
6167                         warnx("no overlay mounts support on FreeBSD, ignoring");
6168                         break;
6169                 case ':':
6170                         (void) fprintf(stderr, gettext("missing argument for "
6171                             "'%c' option\n"), optopt);
6172                         usage(B_FALSE);
6173                         break;
6174                 case '?':
6175                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6176                             optopt);
6177                         usage(B_FALSE);
6178                 }
6179         }
6180
6181         argc -= optind;
6182         argv += optind;
6183
6184         /* check number of arguments */
6185         if (do_all) {
6186                 zfs_handle_t **dslist = NULL;
6187                 size_t i, count = 0;
6188                 char *protocol = NULL;
6189
6190                 if (op == OP_SHARE && argc > 0) {
6191                         if (strcmp(argv[0], "nfs") != 0 &&
6192                             strcmp(argv[0], "smb") != 0) {
6193                                 (void) fprintf(stderr, gettext("share type "
6194                                     "must be 'nfs' or 'smb'\n"));
6195                                 usage(B_FALSE);
6196                         }
6197                         protocol = argv[0];
6198                         argc--;
6199                         argv++;
6200                 }
6201
6202                 if (argc != 0) {
6203                         (void) fprintf(stderr, gettext("too many arguments\n"));
6204                         usage(B_FALSE);
6205                 }
6206
6207                 start_progress_timer();
6208                 get_all_datasets(&dslist, &count, verbose);
6209
6210                 if (count == 0)
6211                         return (0);
6212
6213                 qsort(dslist, count, sizeof (void *), libzfs_dataset_cmp);
6214
6215                 for (i = 0; i < count; i++) {
6216                         if (verbose)
6217                                 report_mount_progress(i, count);
6218
6219                         if (share_mount_one(dslist[i], op, flags, protocol,
6220                             B_FALSE, options) != 0)
6221                                 ret = 1;
6222                         zfs_close(dslist[i]);
6223                 }
6224
6225                 free(dslist);
6226         } else if (argc == 0) {
6227                 struct mnttab entry;
6228
6229                 if ((op == OP_SHARE) || (options != NULL)) {
6230                         (void) fprintf(stderr, gettext("missing filesystem "
6231                             "argument (specify -a for all)\n"));
6232                         usage(B_FALSE);
6233                 }
6234
6235                 /*
6236                  * When mount is given no arguments, go through /etc/mnttab and
6237                  * display any active ZFS mounts.  We hide any snapshots, since
6238                  * they are controlled automatically.
6239                  */
6240                 rewind(mnttab_file);
6241                 while (getmntent(mnttab_file, &entry) == 0) {
6242                         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0 ||
6243                             strchr(entry.mnt_special, '@') != NULL)
6244                                 continue;
6245
6246                         (void) printf("%-30s  %s\n", entry.mnt_special,
6247                             entry.mnt_mountp);
6248                 }
6249
6250         } else {
6251                 zfs_handle_t *zhp;
6252
6253                 if (argc > 1) {
6254                         (void) fprintf(stderr,
6255                             gettext("too many arguments\n"));
6256                         usage(B_FALSE);
6257                 }
6258
6259                 if ((zhp = zfs_open(g_zfs, argv[0],
6260                     ZFS_TYPE_FILESYSTEM)) == NULL) {
6261                         ret = 1;
6262                 } else {
6263                         ret = share_mount_one(zhp, op, flags, NULL, B_TRUE,
6264                             options);
6265                         zfs_close(zhp);
6266                 }
6267         }
6268
6269         return (ret);
6270 }
6271
6272 /*
6273  * zfs mount -a [nfs]
6274  * zfs mount filesystem
6275  *
6276  * Mount all filesystems, or mount the given filesystem.
6277  */
6278 static int
6279 zfs_do_mount(int argc, char **argv)
6280 {
6281         return (share_mount(OP_MOUNT, argc, argv));
6282 }
6283
6284 /*
6285  * zfs share -a [nfs | smb]
6286  * zfs share filesystem
6287  *
6288  * Share all filesystems, or share the given filesystem.
6289  */
6290 static int
6291 zfs_do_share(int argc, char **argv)
6292 {
6293         return (share_mount(OP_SHARE, argc, argv));
6294 }
6295
6296 typedef struct unshare_unmount_node {
6297         zfs_handle_t    *un_zhp;
6298         char            *un_mountp;
6299         uu_avl_node_t   un_avlnode;
6300 } unshare_unmount_node_t;
6301
6302 /* ARGSUSED */
6303 static int
6304 unshare_unmount_compare(const void *larg, const void *rarg, void *unused)
6305 {
6306         const unshare_unmount_node_t *l = larg;
6307         const unshare_unmount_node_t *r = rarg;
6308
6309         return (strcmp(l->un_mountp, r->un_mountp));
6310 }
6311
6312 /*
6313  * Convenience routine used by zfs_do_umount() and manual_unmount().  Given an
6314  * absolute path, find the entry /etc/mnttab, verify that its a ZFS filesystem,
6315  * and unmount it appropriately.
6316  */
6317 static int
6318 unshare_unmount_path(int op, char *path, int flags, boolean_t is_manual)
6319 {
6320         zfs_handle_t *zhp;
6321         int ret = 0;
6322         struct stat64 statbuf;
6323         struct extmnttab entry;
6324         const char *cmdname = (op == OP_SHARE) ? "unshare" : "unmount";
6325         ino_t path_inode;
6326
6327         /*
6328          * Search for the path in /etc/mnttab.  Rather than looking for the
6329          * specific path, which can be fooled by non-standard paths (i.e. ".."
6330          * or "//"), we stat() the path and search for the corresponding
6331          * (major,minor) device pair.
6332          */
6333         if (stat64(path, &statbuf) != 0) {
6334                 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
6335                     cmdname, path, strerror(errno));
6336                 return (1);
6337         }
6338         path_inode = statbuf.st_ino;
6339
6340         /*
6341          * Search for the given (major,minor) pair in the mount table.
6342          */
6343 #ifdef illumos
6344         rewind(mnttab_file);
6345         while ((ret = getextmntent(mnttab_file, &entry, 0)) == 0) {
6346                 if (entry.mnt_major == major(statbuf.st_dev) &&
6347                     entry.mnt_minor == minor(statbuf.st_dev))
6348                         break;
6349         }
6350 #else
6351         {
6352                 struct statfs sfs;
6353
6354                 if (statfs(path, &sfs) != 0) {
6355                         (void) fprintf(stderr, "%s: %s\n", path,
6356                             strerror(errno));
6357                         ret = -1;
6358                 }
6359                 statfs2mnttab(&sfs, &entry);
6360         }
6361 #endif
6362         if (ret != 0) {
6363                 if (op == OP_SHARE) {
6364                         (void) fprintf(stderr, gettext("cannot %s '%s': not "
6365                             "currently mounted\n"), cmdname, path);
6366                         return (1);
6367                 }
6368                 (void) fprintf(stderr, gettext("warning: %s not in mnttab\n"),
6369                     path);
6370                 if ((ret = umount2(path, flags)) != 0)
6371                         (void) fprintf(stderr, gettext("%s: %s\n"), path,
6372                             strerror(errno));
6373                 return (ret != 0);
6374         }
6375
6376         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) {
6377                 (void) fprintf(stderr, gettext("cannot %s '%s': not a ZFS "
6378                     "filesystem\n"), cmdname, path);
6379                 return (1);
6380         }
6381
6382         if ((zhp = zfs_open(g_zfs, entry.mnt_special,
6383             ZFS_TYPE_FILESYSTEM)) == NULL)
6384                 return (1);
6385
6386         ret = 1;
6387         if (stat64(entry.mnt_mountp, &statbuf) != 0) {
6388                 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
6389                     cmdname, path, strerror(errno));
6390                 goto out;
6391         } else if (statbuf.st_ino != path_inode) {
6392                 (void) fprintf(stderr, gettext("cannot "
6393                     "%s '%s': not a mountpoint\n"), cmdname, path);
6394                 goto out;
6395         }
6396
6397         if (op == OP_SHARE) {
6398                 char nfs_mnt_prop[ZFS_MAXPROPLEN];
6399                 char smbshare_prop[ZFS_MAXPROPLEN];
6400
6401                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, nfs_mnt_prop,
6402                     sizeof (nfs_mnt_prop), NULL, NULL, 0, B_FALSE) == 0);
6403                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshare_prop,
6404                     sizeof (smbshare_prop), NULL, NULL, 0, B_FALSE) == 0);
6405
6406                 if (strcmp(nfs_mnt_prop, "off") == 0 &&
6407                     strcmp(smbshare_prop, "off") == 0) {
6408                         (void) fprintf(stderr, gettext("cannot unshare "
6409                             "'%s': legacy share\n"), path);
6410 #ifdef illumos
6411                         (void) fprintf(stderr, gettext("use "
6412                             "unshare(1M) to unshare this filesystem\n"));
6413 #endif
6414                 } else if (!zfs_is_shared(zhp)) {
6415                         (void) fprintf(stderr, gettext("cannot unshare '%s': "
6416                             "not currently shared\n"), path);
6417                 } else {
6418                         ret = zfs_unshareall_bypath(zhp, path);
6419                 }
6420         } else {
6421                 char mtpt_prop[ZFS_MAXPROPLEN];
6422
6423                 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mtpt_prop,
6424                     sizeof (mtpt_prop), NULL, NULL, 0, B_FALSE) == 0);
6425
6426                 if (is_manual) {
6427                         ret = zfs_unmount(zhp, NULL, flags);
6428                 } else if (strcmp(mtpt_prop, "legacy") == 0) {
6429                         (void) fprintf(stderr, gettext("cannot unmount "
6430                             "'%s': legacy mountpoint\n"),
6431                             zfs_get_name(zhp));
6432                         (void) fprintf(stderr, gettext("use umount(8) "
6433                             "to unmount this filesystem\n"));
6434                 } else {
6435                         ret = zfs_unmountall(zhp, flags);
6436                 }
6437         }
6438
6439 out:
6440         zfs_close(zhp);
6441
6442         return (ret != 0);
6443 }
6444
6445 /*
6446  * Generic callback for unsharing or unmounting a filesystem.
6447  */
6448 static int
6449 unshare_unmount(int op, int argc, char **argv)
6450 {
6451         int do_all = 0;
6452         int flags = 0;
6453         int ret = 0;
6454         int c;
6455         zfs_handle_t *zhp;
6456         char nfs_mnt_prop[ZFS_MAXPROPLEN];
6457         char sharesmb[ZFS_MAXPROPLEN];
6458
6459         /* check options */
6460         while ((c = getopt(argc, argv, op == OP_SHARE ? "a" : "af")) != -1) {
6461                 switch (c) {
6462                 case 'a':
6463                         do_all = 1;
6464                         break;
6465                 case 'f':
6466                         flags = MS_FORCE;
6467                         break;
6468                 case '?':
6469                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6470                             optopt);
6471                         usage(B_FALSE);
6472                 }
6473         }
6474
6475         argc -= optind;
6476         argv += optind;
6477
6478         if (do_all) {
6479                 /*
6480                  * We could make use of zfs_for_each() to walk all datasets in
6481                  * the system, but this would be very inefficient, especially
6482                  * since we would have to linearly search /etc/mnttab for each
6483                  * one.  Instead, do one pass through /etc/mnttab looking for
6484                  * zfs entries and call zfs_unmount() for each one.
6485                  *
6486                  * Things get a little tricky if the administrator has created
6487                  * mountpoints beneath other ZFS filesystems.  In this case, we
6488                  * have to unmount the deepest filesystems first.  To accomplish
6489                  * this, we place all the mountpoints in an AVL tree sorted by
6490                  * the special type (dataset name), and walk the result in
6491                  * reverse to make sure to get any snapshots first.
6492                  */
6493                 struct mnttab entry;
6494                 uu_avl_pool_t *pool;
6495                 uu_avl_t *tree = NULL;
6496                 unshare_unmount_node_t *node;
6497                 uu_avl_index_t idx;
6498                 uu_avl_walk_t *walk;
6499
6500                 if (argc != 0) {
6501                         (void) fprintf(stderr, gettext("too many arguments\n"));
6502                         usage(B_FALSE);
6503                 }
6504
6505                 if (((pool = uu_avl_pool_create("unmount_pool",
6506                     sizeof (unshare_unmount_node_t),
6507                     offsetof(unshare_unmount_node_t, un_avlnode),
6508                     unshare_unmount_compare, UU_DEFAULT)) == NULL) ||
6509                     ((tree = uu_avl_create(pool, NULL, UU_DEFAULT)) == NULL))
6510                         nomem();
6511
6512                 rewind(mnttab_file);
6513                 while (getmntent(mnttab_file, &entry) == 0) {
6514
6515                         /* ignore non-ZFS entries */
6516                         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0)
6517                                 continue;
6518
6519                         /* ignore snapshots */
6520                         if (strchr(entry.mnt_special, '@') != NULL)
6521                                 continue;
6522
6523                         if ((zhp = zfs_open(g_zfs, entry.mnt_special,
6524                             ZFS_TYPE_FILESYSTEM)) == NULL) {
6525                                 ret = 1;
6526                                 continue;
6527                         }
6528
6529                         /*
6530                          * Ignore datasets that are excluded/restricted by
6531                          * parent pool name.
6532                          */
6533                         if (zpool_skip_pool(zfs_get_pool_name(zhp))) {
6534                                 zfs_close(zhp);
6535                                 continue;
6536                         }
6537
6538                         switch (op) {
6539                         case OP_SHARE:
6540                                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
6541                                     nfs_mnt_prop,
6542                                     sizeof (nfs_mnt_prop),
6543                                     NULL, NULL, 0, B_FALSE) == 0);
6544                                 if (strcmp(nfs_mnt_prop, "off") != 0)
6545                                         break;
6546                                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
6547                                     nfs_mnt_prop,
6548                                     sizeof (nfs_mnt_prop),
6549                                     NULL, NULL, 0, B_FALSE) == 0);
6550                                 if (strcmp(nfs_mnt_prop, "off") == 0)
6551                                         continue;
6552                                 break;
6553                         case OP_MOUNT:
6554                                 /* Ignore legacy mounts */
6555                                 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT,
6556                                     nfs_mnt_prop,
6557                                     sizeof (nfs_mnt_prop),
6558                                     NULL, NULL, 0, B_FALSE) == 0);
6559                                 if (strcmp(nfs_mnt_prop, "legacy") == 0)
6560                                         continue;
6561                                 /* Ignore canmount=noauto mounts */
6562                                 if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) ==
6563                                     ZFS_CANMOUNT_NOAUTO)
6564                                         continue;
6565                         default:
6566                                 break;
6567                         }
6568
6569                         node = safe_malloc(sizeof (unshare_unmount_node_t));
6570                         node->un_zhp = zhp;
6571                         node->un_mountp = safe_strdup(entry.mnt_mountp);
6572
6573                         uu_avl_node_init(node, &node->un_avlnode, pool);
6574
6575                         if (uu_avl_find(tree, node, NULL, &idx) == NULL) {
6576                                 uu_avl_insert(tree, node, idx);
6577                         } else {
6578                                 zfs_close(node->un_zhp);
6579                                 free(node->un_mountp);
6580                                 free(node);
6581                         }
6582                 }
6583
6584                 /*
6585                  * Walk the AVL tree in reverse, unmounting each filesystem and
6586                  * removing it from the AVL tree in the process.
6587                  */
6588                 if ((walk = uu_avl_walk_start(tree,
6589                     UU_WALK_REVERSE | UU_WALK_ROBUST)) == NULL)
6590                         nomem();
6591
6592                 while ((node = uu_avl_walk_next(walk)) != NULL) {
6593                         uu_avl_remove(tree, node);
6594
6595                         switch (op) {
6596                         case OP_SHARE:
6597                                 if (zfs_unshareall_bypath(node->un_zhp,
6598                                     node->un_mountp) != 0)
6599                                         ret = 1;
6600                                 break;
6601
6602                         case OP_MOUNT:
6603                                 if (zfs_unmount(node->un_zhp,
6604                                     node->un_mountp, flags) != 0)
6605                                         ret = 1;
6606                                 break;
6607                         }
6608
6609                         zfs_close(node->un_zhp);
6610                         free(node->un_mountp);
6611                         free(node);
6612                 }
6613
6614                 uu_avl_walk_end(walk);
6615                 uu_avl_destroy(tree);
6616                 uu_avl_pool_destroy(pool);
6617
6618         } else {
6619                 if (argc != 1) {
6620                         if (argc == 0)
6621                                 (void) fprintf(stderr,
6622                                     gettext("missing filesystem argument\n"));
6623                         else
6624                                 (void) fprintf(stderr,
6625                                     gettext("too many arguments\n"));
6626                         usage(B_FALSE);
6627                 }
6628
6629                 /*
6630                  * We have an argument, but it may be a full path or a ZFS
6631                  * filesystem.  Pass full paths off to unmount_path() (shared by
6632                  * manual_unmount), otherwise open the filesystem and pass to
6633                  * zfs_unmount().
6634                  */
6635                 if (argv[0][0] == '/')
6636                         return (unshare_unmount_path(op, argv[0],
6637                             flags, B_FALSE));
6638
6639                 if ((zhp = zfs_open(g_zfs, argv[0],
6640                     ZFS_TYPE_FILESYSTEM)) == NULL)
6641                         return (1);
6642
6643                 verify(zfs_prop_get(zhp, op == OP_SHARE ?
6644                     ZFS_PROP_SHARENFS : ZFS_PROP_MOUNTPOINT,
6645                     nfs_mnt_prop, sizeof (nfs_mnt_prop), NULL,
6646                     NULL, 0, B_FALSE) == 0);
6647
6648                 switch (op) {
6649                 case OP_SHARE:
6650                         verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
6651                             nfs_mnt_prop,
6652                             sizeof (nfs_mnt_prop),
6653                             NULL, NULL, 0, B_FALSE) == 0);
6654                         verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
6655                             sharesmb, sizeof (sharesmb), NULL, NULL,
6656                             0, B_FALSE) == 0);
6657
6658                         if (strcmp(nfs_mnt_prop, "off") == 0 &&
6659                             strcmp(sharesmb, "off") == 0) {
6660                                 (void) fprintf(stderr, gettext("cannot "
6661                                     "unshare '%s': legacy share\n"),
6662                                     zfs_get_name(zhp));
6663 #ifdef illumos
6664                                 (void) fprintf(stderr, gettext("use "
6665                                     "unshare(1M) to unshare this "
6666                                     "filesystem\n"));
6667 #endif
6668                                 ret = 1;
6669                         } else if (!zfs_is_shared(zhp)) {
6670                                 (void) fprintf(stderr, gettext("cannot "
6671                                     "unshare '%s': not currently "
6672                                     "shared\n"), zfs_get_name(zhp));
6673                                 ret = 1;
6674                         } else if (zfs_unshareall(zhp) != 0) {
6675                                 ret = 1;
6676                         }
6677                         break;
6678
6679                 case OP_MOUNT:
6680                         if (strcmp(nfs_mnt_prop, "legacy") == 0) {
6681                                 (void) fprintf(stderr, gettext("cannot "
6682                                     "unmount '%s': legacy "
6683                                     "mountpoint\n"), zfs_get_name(zhp));
6684                                 (void) fprintf(stderr, gettext("use "
6685                                     "umount(8) to unmount this "
6686                                     "filesystem\n"));
6687                                 ret = 1;
6688                         } else if (!zfs_is_mounted(zhp, NULL)) {
6689                                 (void) fprintf(stderr, gettext("cannot "
6690                                     "unmount '%s': not currently "
6691                                     "mounted\n"),
6692                                     zfs_get_name(zhp));
6693                                 ret = 1;
6694                         } else if (zfs_unmountall(zhp, flags) != 0) {
6695                                 ret = 1;
6696                         }
6697                         break;
6698                 }
6699
6700                 zfs_close(zhp);
6701         }
6702
6703         return (ret);
6704 }
6705
6706 /*
6707  * zfs unmount -a
6708  * zfs unmount filesystem
6709  *
6710  * Unmount all filesystems, or a specific ZFS filesystem.
6711  */
6712 static int
6713 zfs_do_unmount(int argc, char **argv)
6714 {
6715         return (unshare_unmount(OP_MOUNT, argc, argv));
6716 }
6717
6718 /*
6719  * zfs unshare -a
6720  * zfs unshare filesystem
6721  *
6722  * Unshare all filesystems, or a specific ZFS filesystem.
6723  */
6724 static int
6725 zfs_do_unshare(int argc, char **argv)
6726 {
6727         return (unshare_unmount(OP_SHARE, argc, argv));
6728 }
6729
6730 /*
6731  * Attach/detach the given dataset to/from the given jail
6732  */
6733 /* ARGSUSED */
6734 static int
6735 do_jail(int argc, char **argv, int attach)
6736 {
6737         zfs_handle_t *zhp;
6738         int jailid, ret;
6739
6740         /* check number of arguments */
6741         if (argc < 3) {
6742                 (void) fprintf(stderr, gettext("missing argument(s)\n"));
6743                 usage(B_FALSE);
6744         }
6745         if (argc > 3) {
6746                 (void) fprintf(stderr, gettext("too many arguments\n"));
6747                 usage(B_FALSE);
6748         }
6749
6750         jailid = jail_getid(argv[1]);
6751         if (jailid < 0) {
6752                 (void) fprintf(stderr, gettext("invalid jail id or name\n"));
6753                 usage(B_FALSE);
6754         }
6755
6756         zhp = zfs_open(g_zfs, argv[2], ZFS_TYPE_FILESYSTEM);
6757         if (zhp == NULL)
6758                 return (1);
6759
6760         ret = (zfs_jail(zhp, jailid, attach) != 0);
6761
6762         zfs_close(zhp);
6763         return (ret);
6764 }
6765
6766 /*
6767  * zfs jail jailid filesystem
6768  *
6769  * Attach the given dataset to the given jail
6770  */
6771 /* ARGSUSED */
6772 static int
6773 zfs_do_jail(int argc, char **argv)
6774 {
6775
6776         return (do_jail(argc, argv, 1));
6777 }
6778
6779 /*
6780  * zfs unjail jailid filesystem
6781  *
6782  * Detach the given dataset from the given jail
6783  */
6784 /* ARGSUSED */
6785 static int
6786 zfs_do_unjail(int argc, char **argv)
6787 {
6788
6789         return (do_jail(argc, argv, 0));
6790 }
6791
6792 /*
6793  * Called when invoked as /etc/fs/zfs/mount.  Do the mount if the mountpoint is
6794  * 'legacy'.  Otherwise, complain that use should be using 'zfs mount'.
6795  */
6796 static int
6797 manual_mount(int argc, char **argv)
6798 {
6799         zfs_handle_t *zhp;
6800         char mountpoint[ZFS_MAXPROPLEN];
6801         char mntopts[MNT_LINE_MAX] = { '\0' };
6802         int ret = 0;
6803         int c;
6804         int flags = 0;
6805         char *dataset, *path;
6806
6807         /* check options */
6808         while ((c = getopt(argc, argv, ":mo:O")) != -1) {
6809                 switch (c) {
6810                 case 'o':
6811                         (void) strlcpy(mntopts, optarg, sizeof (mntopts));
6812                         break;
6813                 case 'O':
6814                         flags |= MS_OVERLAY;
6815                         break;
6816                 case 'm':
6817                         flags |= MS_NOMNTTAB;
6818                         break;
6819                 case ':':
6820                         (void) fprintf(stderr, gettext("missing argument for "
6821                             "'%c' option\n"), optopt);
6822                         usage(B_FALSE);
6823                         break;
6824                 case '?':
6825                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6826                             optopt);
6827                         (void) fprintf(stderr, gettext("usage: mount [-o opts] "
6828                             "<path>\n"));
6829                         return (2);
6830                 }
6831         }
6832
6833         argc -= optind;
6834         argv += optind;
6835
6836         /* check that we only have two arguments */
6837         if (argc != 2) {
6838                 if (argc == 0)
6839                         (void) fprintf(stderr, gettext("missing dataset "
6840                             "argument\n"));
6841                 else if (argc == 1)
6842                         (void) fprintf(stderr,
6843                             gettext("missing mountpoint argument\n"));
6844                 else
6845                         (void) fprintf(stderr, gettext("too many arguments\n"));
6846                 (void) fprintf(stderr, "usage: mount <dataset> <mountpoint>\n");
6847                 return (2);
6848         }
6849
6850         dataset = argv[0];
6851         path = argv[1];
6852
6853         /* try to open the dataset */
6854         if ((zhp = zfs_open(g_zfs, dataset, ZFS_TYPE_FILESYSTEM)) == NULL)
6855                 return (1);
6856
6857         (void) zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
6858             sizeof (mountpoint), NULL, NULL, 0, B_FALSE);
6859
6860         /* check for legacy mountpoint and complain appropriately */
6861         ret = 0;
6862         if (strcmp(mountpoint, ZFS_MOUNTPOINT_LEGACY) == 0) {
6863                 if (zmount(dataset, path, flags, MNTTYPE_ZFS,
6864                     NULL, 0, mntopts, sizeof (mntopts)) != 0) {
6865                         (void) fprintf(stderr, gettext("mount failed: %s\n"),
6866                             strerror(errno));
6867                         ret = 1;
6868                 }
6869         } else {
6870                 (void) fprintf(stderr, gettext("filesystem '%s' cannot be "
6871                     "mounted using 'mount -t zfs'\n"), dataset);
6872                 (void) fprintf(stderr, gettext("Use 'zfs set mountpoint=%s' "
6873                     "instead.\n"), path);
6874                 (void) fprintf(stderr, gettext("If you must use 'mount -t zfs' "
6875                     "or /etc/fstab, use 'zfs set mountpoint=legacy'.\n"));
6876                 (void) fprintf(stderr, gettext("See zfs(8) for more "
6877                     "information.\n"));
6878                 ret = 1;
6879         }
6880
6881         return (ret);
6882 }
6883
6884 /*
6885  * Called when invoked as /etc/fs/zfs/umount.  Unlike a manual mount, we allow
6886  * unmounts of non-legacy filesystems, as this is the dominant administrative
6887  * interface.
6888  */
6889 static int
6890 manual_unmount(int argc, char **argv)
6891 {
6892         int flags = 0;
6893         int c;
6894
6895         /* check options */
6896         while ((c = getopt(argc, argv, "f")) != -1) {
6897                 switch (c) {
6898                 case 'f':
6899                         flags = MS_FORCE;
6900                         break;
6901                 case '?':
6902                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6903                             optopt);
6904                         (void) fprintf(stderr, gettext("usage: unmount [-f] "
6905                             "<path>\n"));
6906                         return (2);
6907                 }
6908         }
6909
6910         argc -= optind;
6911         argv += optind;
6912
6913         /* check arguments */
6914         if (argc != 1) {
6915                 if (argc == 0)
6916                         (void) fprintf(stderr, gettext("missing path "
6917                             "argument\n"));
6918                 else
6919                         (void) fprintf(stderr, gettext("too many arguments\n"));
6920                 (void) fprintf(stderr, gettext("usage: unmount [-f] <path>\n"));
6921                 return (2);
6922         }
6923
6924         return (unshare_unmount_path(OP_MOUNT, argv[0], flags, B_TRUE));
6925 }
6926
6927 static int
6928 find_command_idx(char *command, int *idx)
6929 {
6930         int i;
6931
6932         for (i = 0; i < NCOMMAND; i++) {
6933                 if (command_table[i].name == NULL)
6934                         continue;
6935
6936                 if (strcmp(command, command_table[i].name) == 0) {
6937                         *idx = i;
6938                         return (0);
6939                 }
6940         }
6941         return (1);
6942 }
6943
6944 static int
6945 zfs_do_diff(int argc, char **argv)
6946 {
6947         zfs_handle_t *zhp;
6948         int flags = 0;
6949         char *tosnap = NULL;
6950         char *fromsnap = NULL;
6951         char *atp, *copy;
6952         int err = 0;
6953         int c;
6954
6955         while ((c = getopt(argc, argv, "FHt")) != -1) {
6956                 switch (c) {
6957                 case 'F':
6958                         flags |= ZFS_DIFF_CLASSIFY;
6959                         break;
6960                 case 'H':
6961                         flags |= ZFS_DIFF_PARSEABLE;
6962                         break;
6963                 case 't':
6964                         flags |= ZFS_DIFF_TIMESTAMP;
6965                         break;
6966                 default:
6967                         (void) fprintf(stderr,
6968                             gettext("invalid option '%c'\n"), optopt);
6969                         usage(B_FALSE);
6970                 }
6971         }
6972
6973         argc -= optind;
6974         argv += optind;
6975
6976         if (argc < 1) {
6977                 (void) fprintf(stderr,
6978                 gettext("must provide at least one snapshot name\n"));
6979                 usage(B_FALSE);
6980         }
6981
6982         if (argc > 2) {
6983                 (void) fprintf(stderr, gettext("too many arguments\n"));
6984                 usage(B_FALSE);
6985         }
6986
6987         fromsnap = argv[0];
6988         tosnap = (argc == 2) ? argv[1] : NULL;
6989
6990         copy = NULL;
6991         if (*fromsnap != '@')
6992                 copy = strdup(fromsnap);
6993         else if (tosnap)
6994                 copy = strdup(tosnap);
6995         if (copy == NULL)
6996                 usage(B_FALSE);
6997
6998         if ((atp = strchr(copy, '@')) != NULL)
6999                 *atp = '\0';
7000
7001         if ((zhp = zfs_open(g_zfs, copy, ZFS_TYPE_FILESYSTEM)) == NULL)
7002                 return (1);
7003
7004         free(copy);
7005
7006         /*
7007          * Ignore SIGPIPE so that the library can give us
7008          * information on any failure
7009          */
7010         (void) sigignore(SIGPIPE);
7011
7012         err = zfs_show_diffs(zhp, STDOUT_FILENO, fromsnap, tosnap, flags);
7013
7014         zfs_close(zhp);
7015
7016         return (err != 0);
7017 }
7018
7019 /*
7020  * zfs bookmark <fs@snap> <fs#bmark>
7021  *
7022  * Creates a bookmark with the given name from the given snapshot.
7023  */
7024 static int
7025 zfs_do_bookmark(int argc, char **argv)
7026 {
7027         char snapname[ZFS_MAX_DATASET_NAME_LEN];
7028         zfs_handle_t *zhp;
7029         nvlist_t *nvl;
7030         int ret = 0;
7031         int c;
7032
7033         /* check options */
7034         while ((c = getopt(argc, argv, "")) != -1) {
7035                 switch (c) {
7036                 case '?':
7037                         (void) fprintf(stderr,
7038                             gettext("invalid option '%c'\n"), optopt);
7039                         goto usage;
7040                 }
7041         }
7042
7043         argc -= optind;
7044         argv += optind;
7045
7046         /* check number of arguments */
7047         if (argc < 1) {
7048                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
7049                 goto usage;
7050         }
7051         if (argc < 2) {
7052                 (void) fprintf(stderr, gettext("missing bookmark argument\n"));
7053                 goto usage;
7054         }
7055
7056         if (strchr(argv[1], '#') == NULL) {
7057                 (void) fprintf(stderr,
7058                     gettext("invalid bookmark name '%s' -- "
7059                     "must contain a '#'\n"), argv[1]);
7060                 goto usage;
7061         }
7062
7063         if (argv[0][0] == '@') {
7064                 /*
7065                  * Snapshot name begins with @.
7066                  * Default to same fs as bookmark.
7067                  */
7068                 (void) strncpy(snapname, argv[1], sizeof (snapname));
7069                 *strchr(snapname, '#') = '\0';
7070                 (void) strlcat(snapname, argv[0], sizeof (snapname));
7071         } else {
7072                 (void) strncpy(snapname, argv[0], sizeof (snapname));
7073         }
7074         zhp = zfs_open(g_zfs, snapname, ZFS_TYPE_SNAPSHOT);
7075         if (zhp == NULL)
7076                 goto usage;
7077         zfs_close(zhp);
7078
7079
7080         nvl = fnvlist_alloc();
7081         fnvlist_add_string(nvl, argv[1], snapname);
7082         ret = lzc_bookmark(nvl, NULL);
7083         fnvlist_free(nvl);
7084
7085         if (ret != 0) {
7086                 const char *err_msg;
7087                 char errbuf[1024];
7088
7089                 (void) snprintf(errbuf, sizeof (errbuf),
7090                     dgettext(TEXT_DOMAIN,
7091                     "cannot create bookmark '%s'"), argv[1]);
7092
7093                 switch (ret) {
7094                 case EXDEV:
7095                         err_msg = "bookmark is in a different pool";
7096                         break;
7097                 case EEXIST:
7098                         err_msg = "bookmark exists";
7099                         break;
7100                 case EINVAL:
7101                         err_msg = "invalid argument";
7102                         break;
7103                 case ENOTSUP:
7104                         err_msg = "bookmark feature not enabled";
7105                         break;
7106                 case ENOSPC:
7107                         err_msg = "out of space";
7108                         break;
7109                 default:
7110                         err_msg = "unknown error";
7111                         break;
7112                 }
7113                 (void) fprintf(stderr, "%s: %s\n", errbuf,
7114                     dgettext(TEXT_DOMAIN, err_msg));
7115         }
7116
7117         return (ret != 0);
7118
7119 usage:
7120         usage(B_FALSE);
7121         return (-1);
7122 }
7123
7124 static int
7125 zfs_do_channel_program(int argc, char **argv)
7126 {
7127         int ret, fd;
7128         char c;
7129         char *progbuf, *filename, *poolname;
7130         size_t progsize, progread;
7131         nvlist_t *outnvl;
7132         uint64_t instrlimit = ZCP_DEFAULT_INSTRLIMIT;
7133         uint64_t memlimit = ZCP_DEFAULT_MEMLIMIT;
7134         zpool_handle_t *zhp;
7135
7136         /* check options */
7137         while (-1 !=
7138             (c = getopt(argc, argv, "t:(instr-limit)m:(memory-limit)"))) {
7139                 switch (c) {
7140                 case 't':
7141                 case 'm': {
7142                         uint64_t arg;
7143                         char *endp;
7144
7145                         errno = 0;
7146                         arg = strtoull(optarg, &endp, 0);
7147                         if (errno != 0 || *endp != '\0') {
7148                                 (void) fprintf(stderr, gettext(
7149                                     "invalid argument "
7150                                     "'%s': expected integer\n"), optarg);
7151                                 goto usage;
7152                         }
7153
7154                         if (c == 't') {
7155                                 if (arg > ZCP_MAX_INSTRLIMIT || arg == 0) {
7156                                         (void) fprintf(stderr, gettext(
7157                                             "Invalid instruction limit: "
7158                                             "%s\n"), optarg);
7159                                         return (1);
7160                                 } else {
7161                                         instrlimit = arg;
7162                                 }
7163                         } else {
7164                                 ASSERT3U(c, ==, 'm');
7165                                 if (arg > ZCP_MAX_MEMLIMIT || arg == 0) {
7166                                         (void) fprintf(stderr, gettext(
7167                                             "Invalid memory limit: "
7168                                             "%s\n"), optarg);
7169                                         return (1);
7170                                 } else {
7171                                         memlimit = arg;
7172                                 }
7173                         }
7174                         break;
7175                 }
7176                 case '?':
7177                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
7178                             optopt);
7179                         goto usage;
7180                 }
7181         }
7182
7183         argc -= optind;
7184         argv += optind;
7185
7186         if (argc < 2) {
7187                 (void) fprintf(stderr,
7188                     gettext("invalid number of arguments\n"));
7189                 goto usage;
7190         }
7191
7192         poolname = argv[0];
7193         filename = argv[1];
7194         if (strcmp(filename, "-") == 0) {
7195                 fd = 0;
7196                 filename = "standard input";
7197         } else if ((fd = open(filename, O_RDONLY)) < 0) {
7198                 (void) fprintf(stderr, gettext("cannot open '%s': %s\n"),
7199                     filename, strerror(errno));
7200                 return (1);
7201         }
7202
7203         if ((zhp = zpool_open(g_zfs, poolname)) == NULL) {
7204                 (void) fprintf(stderr, gettext("cannot open pool '%s'"),
7205                     poolname);
7206                 return (1);
7207         }
7208         zpool_close(zhp);
7209
7210         /*
7211          * Read in the channel program, expanding the program buffer as
7212          * necessary.
7213          */
7214         progread = 0;
7215         progsize = 1024;
7216         progbuf = safe_malloc(progsize);
7217         do {
7218                 ret = read(fd, progbuf + progread, progsize - progread);
7219                 progread += ret;
7220                 if (progread == progsize && ret > 0) {
7221                         progsize *= 2;
7222                         progbuf = safe_realloc(progbuf, progsize);
7223                 }
7224         } while (ret > 0);
7225
7226         if (fd != 0)
7227                 (void) close(fd);
7228         if (ret < 0) {
7229                 free(progbuf);
7230                 (void) fprintf(stderr,
7231                     gettext("cannot read '%s': %s\n"),
7232                     filename, strerror(errno));
7233                 return (1);
7234         }
7235         progbuf[progread] = '\0';
7236
7237         /*
7238          * Any remaining arguments are passed as arguments to the lua script as
7239          * a string array:
7240          * {
7241          *      "argv" -> [ "arg 1", ... "arg n" ],
7242          * }
7243          */
7244         nvlist_t *argnvl = fnvlist_alloc();
7245         fnvlist_add_string_array(argnvl, ZCP_ARG_CLIARGV, argv + 2, argc - 2);
7246
7247         ret = lzc_channel_program(poolname, progbuf, instrlimit, memlimit,
7248             argnvl, &outnvl);
7249
7250         if (ret != 0) {
7251                 /*
7252                  * On error, report the error message handed back by lua if one
7253                  * exists.  Otherwise, generate an appropriate error message,
7254                  * falling back on strerror() for an unexpected return code.
7255                  */
7256                 char *errstring = NULL;
7257                 if (nvlist_exists(outnvl, ZCP_RET_ERROR)) {
7258                         (void) nvlist_lookup_string(outnvl,
7259                             ZCP_RET_ERROR, &errstring);
7260                         if (errstring == NULL)
7261                                 errstring = strerror(ret);
7262                 } else {
7263                         switch (ret) {
7264                         case EINVAL:
7265                                 errstring =
7266                                     "Invalid instruction or memory limit.";
7267                                 break;
7268                         case ENOMEM:
7269                                 errstring = "Return value too large.";
7270                                 break;
7271                         case ENOSPC:
7272                                 errstring = "Memory limit exhausted.";
7273                                 break;
7274 #ifdef illumos
7275                         case ETIME:
7276 #else
7277                         case ETIMEDOUT:
7278 #endif
7279                                 errstring = "Timed out.";
7280                                 break;
7281                         case EPERM:
7282                                 errstring = "Permission denied. Channel "
7283                                     "programs must be run as root.";
7284                                 break;
7285                         default:
7286                                 errstring = strerror(ret);
7287                         }
7288                 }
7289                 (void) fprintf(stderr,
7290                     gettext("Channel program execution failed:\n%s\n"),
7291                     errstring);
7292         } else {
7293                 (void) printf("Channel program fully executed ");
7294                 if (nvlist_empty(outnvl)) {
7295                         (void) printf("with no return value.\n");
7296                 } else {
7297                         (void) printf("with return value:\n");
7298                         dump_nvlist(outnvl, 4);
7299                 }
7300         }
7301
7302         free(progbuf);
7303         fnvlist_free(outnvl);
7304         fnvlist_free(argnvl);
7305         return (ret != 0);
7306
7307 usage:
7308         usage(B_FALSE);
7309         return (-1);
7310 }
7311
7312 int
7313 main(int argc, char **argv)
7314 {
7315         int ret = 0;
7316         int i;
7317         char *progname;
7318         char *cmdname;
7319
7320         (void) setlocale(LC_ALL, "");
7321         (void) textdomain(TEXT_DOMAIN);
7322
7323         opterr = 0;
7324
7325         if ((g_zfs = libzfs_init()) == NULL) {
7326                 (void) fprintf(stderr, gettext("internal error: failed to "
7327                     "initialize ZFS library\n"));
7328                 return (1);
7329         }
7330
7331         zfs_save_arguments(argc, argv, history_str, sizeof (history_str));
7332
7333         libzfs_print_on_error(g_zfs, B_TRUE);
7334
7335         if ((mnttab_file = fopen(MNTTAB, "r")) == NULL) {
7336                 (void) fprintf(stderr, gettext("internal error: unable to "
7337                     "open %s\n"), MNTTAB);
7338                 return (1);
7339         }
7340
7341         /*
7342          * This command also doubles as the /etc/fs mount and unmount program.
7343          * Determine if we should take this behavior based on argv[0].
7344          */
7345         progname = basename(argv[0]);
7346         if (strcmp(progname, "mount") == 0) {
7347                 ret = manual_mount(argc, argv);
7348         } else if (strcmp(progname, "umount") == 0) {
7349                 ret = manual_unmount(argc, argv);
7350         } else {
7351                 /*
7352                  * Make sure the user has specified some command.
7353                  */
7354                 if (argc < 2) {
7355                         (void) fprintf(stderr, gettext("missing command\n"));
7356                         usage(B_FALSE);
7357                 }
7358
7359                 cmdname = argv[1];
7360
7361                 /*
7362                  * The 'umount' command is an alias for 'unmount'
7363                  */
7364                 if (strcmp(cmdname, "umount") == 0)
7365                         cmdname = "unmount";
7366
7367                 /*
7368                  * The 'recv' command is an alias for 'receive'
7369                  */
7370                 if (strcmp(cmdname, "recv") == 0)
7371                         cmdname = "receive";
7372
7373                 /*
7374                  * The 'snap' command is an alias for 'snapshot'
7375                  */
7376                 if (strcmp(cmdname, "snap") == 0)
7377                         cmdname = "snapshot";
7378
7379                 /*
7380                  * Special case '-?'
7381                  */
7382                 if (strcmp(cmdname, "-?") == 0)
7383                         usage(B_TRUE);
7384
7385                 /*
7386                  * Run the appropriate command.
7387                  */
7388                 libzfs_mnttab_cache(g_zfs, B_TRUE);
7389                 if (find_command_idx(cmdname, &i) == 0) {
7390                         current_command = &command_table[i];
7391                         ret = command_table[i].func(argc - 1, argv + 1);
7392                 } else if (strchr(cmdname, '=') != NULL) {
7393                         verify(find_command_idx("set", &i) == 0);
7394                         current_command = &command_table[i];
7395                         ret = command_table[i].func(argc, argv);
7396                 } else {
7397                         (void) fprintf(stderr, gettext("unrecognized "
7398                             "command '%s'\n"), cmdname);
7399                         usage(B_FALSE);
7400                 }
7401                 libzfs_mnttab_cache(g_zfs, B_FALSE);
7402         }
7403
7404         (void) fclose(mnttab_file);
7405
7406         if (ret == 0 && log_history)
7407                 (void) zpool_log_history(g_zfs, history_str);
7408
7409         libzfs_fini(g_zfs);
7410
7411         /*
7412          * The 'ZFS_ABORT' environment variable causes us to dump core on exit
7413          * for the purposes of running ::findleaks.
7414          */
7415         if (getenv("ZFS_ABORT") != NULL) {
7416                 (void) printf("dumping core by request\n");
7417                 abort();
7418         }
7419
7420         return (ret);
7421 }