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