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

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