granicus.if.org Git - zfs/blob - cmd/zfs/zfs_main.c

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