sys/contrib/openzfs/cmd/zfs/zfs_main.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Copyright (c) 2011, 2020 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) 2013 Steven Hartland.  All rights reserved.
  28  * Copyright 2016 Igor Kozhukhov <ikozhukhov@gmail.com>.
  29  * Copyright 2016 Nexenta Systems, Inc.
  30  * Copyright (c) 2019 Datto Inc.
  31  * Copyright (c) 2019, loli10K <ezomori.nozomu@gmail.com>
  32  * Copyright 2019 Joyent, Inc.
  33  * Copyright (c) 2019, 2020 by Christian Schwarz. All rights reserved.
  34  */
  35
  36 #include <assert.h>
  37 #include <ctype.h>
  38 #include <sys/debug.h>
  39 #include <errno.h>
  40 #include <getopt.h>
  41 #include <libgen.h>
  42 #include <libintl.h>
  43 #include <libuutil.h>
  44 #include <libnvpair.h>
  45 #include <locale.h>
  46 #include <stddef.h>
  47 #include <stdio.h>
  48 #include <stdlib.h>
  49 #include <strings.h>
  50 #include <unistd.h>
  51 #include <fcntl.h>
  52 #include <zone.h>
  53 #include <grp.h>
  54 #include <pwd.h>
  55 #include <signal.h>
  56 #include <sys/debug.h>
  57 #include <sys/list.h>
  58 #include <sys/mkdev.h>
  59 #include <sys/mntent.h>
  60 #include <sys/mnttab.h>
  61 #include <sys/mount.h>
  62 #include <sys/stat.h>
  63 #include <sys/fs/zfs.h>
  64 #include <sys/systeminfo.h>
  65 #include <sys/types.h>
  66 #include <time.h>
  67 #include <sys/zfs_project.h>
  68
  69 #include <libzfs.h>
  70 #include <libzfs_core.h>
  71 #include <zfs_prop.h>
  72 #include <zfs_deleg.h>
  73 #include <libzutil.h>
  74 #include <libuutil.h>
  75 #ifdef HAVE_IDMAP
  76 #include <aclutils.h>
  77 #include <directory.h>
  78 #endif /* HAVE_IDMAP */
  79
  80 #include "zfs_iter.h"
  81 #include "zfs_util.h"
  82 #include "zfs_comutil.h"
  83 #include "libzfs_impl.h"
  84 #include "zfs_projectutil.h"
  85
  86 libzfs_handle_t *g_zfs;
  87
  88 static FILE *mnttab_file;
  89 static char history_str[HIS_MAX_RECORD_LEN];
  90 static boolean_t log_history = B_TRUE;
  91
  92 static int zfs_do_clone(int argc, char **argv);
  93 static int zfs_do_create(int argc, char **argv);
  94 static int zfs_do_destroy(int argc, char **argv);
  95 static int zfs_do_get(int argc, char **argv);
  96 static int zfs_do_inherit(int argc, char **argv);
  97 static int zfs_do_list(int argc, char **argv);
  98 static int zfs_do_mount(int argc, char **argv);
  99 static int zfs_do_rename(int argc, char **argv);
 100 static int zfs_do_rollback(int argc, char **argv);
 101 static int zfs_do_set(int argc, char **argv);
 102 static int zfs_do_upgrade(int argc, char **argv);
 103 static int zfs_do_snapshot(int argc, char **argv);
 104 static int zfs_do_unmount(int argc, char **argv);
 105 static int zfs_do_share(int argc, char **argv);
 106 static int zfs_do_unshare(int argc, char **argv);
 107 static int zfs_do_send(int argc, char **argv);
 108 static int zfs_do_receive(int argc, char **argv);
 109 static int zfs_do_promote(int argc, char **argv);
 110 static int zfs_do_userspace(int argc, char **argv);
 111 static int zfs_do_allow(int argc, char **argv);
 112 static int zfs_do_unallow(int argc, char **argv);
 113 static int zfs_do_hold(int argc, char **argv);
 114 static int zfs_do_holds(int argc, char **argv);
 115 static int zfs_do_release(int argc, char **argv);
 116 static int zfs_do_diff(int argc, char **argv);
 117 static int zfs_do_bookmark(int argc, char **argv);
 118 static int zfs_do_channel_program(int argc, char **argv);
 119 static int zfs_do_load_key(int argc, char **argv);
 120 static int zfs_do_unload_key(int argc, char **argv);
 121 static int zfs_do_change_key(int argc, char **argv);
 122 static int zfs_do_project(int argc, char **argv);
 123 static int zfs_do_version(int argc, char **argv);
 124 static int zfs_do_redact(int argc, char **argv);
 125 static int zfs_do_wait(int argc, char **argv);
 126
 127 #ifdef __FreeBSD__
 128 static int zfs_do_jail(int argc, char **argv);
 129 static int zfs_do_unjail(int argc, char **argv);
 130 #endif
 131
 132 /*
 133  * Enable a reasonable set of defaults for libumem debugging on DEBUG builds.
 134  */
 135
 136 #ifdef DEBUG
 137 const char *
 138 _umem_debug_init(void)
 139 {
 140         return ("default,verbose"); /* $UMEM_DEBUG setting */
 141 }
 142
 143 const char *
 144 _umem_logging_init(void)
 145 {
 146         return ("fail,contents"); /* $UMEM_LOGGING setting */
 147 }
 148 #endif
 149
 150 typedef enum {
 151         HELP_CLONE,
 152         HELP_CREATE,
 153         HELP_DESTROY,
 154         HELP_GET,
 155         HELP_INHERIT,
 156         HELP_UPGRADE,
 157         HELP_LIST,
 158         HELP_MOUNT,
 159         HELP_PROMOTE,
 160         HELP_RECEIVE,
 161         HELP_RENAME,
 162         HELP_ROLLBACK,
 163         HELP_SEND,
 164         HELP_SET,
 165         HELP_SHARE,
 166         HELP_SNAPSHOT,
 167         HELP_UNMOUNT,
 168         HELP_UNSHARE,
 169         HELP_ALLOW,
 170         HELP_UNALLOW,
 171         HELP_USERSPACE,
 172         HELP_GROUPSPACE,
 173         HELP_PROJECTSPACE,
 174         HELP_PROJECT,
 175         HELP_HOLD,
 176         HELP_HOLDS,
 177         HELP_RELEASE,
 178         HELP_DIFF,
 179         HELP_BOOKMARK,
 180         HELP_CHANNEL_PROGRAM,
 181         HELP_LOAD_KEY,
 182         HELP_UNLOAD_KEY,
 183         HELP_CHANGE_KEY,
 184         HELP_VERSION,
 185         HELP_REDACT,
 186         HELP_JAIL,
 187         HELP_UNJAIL,
 188         HELP_WAIT,
 189 } zfs_help_t;
 190
 191 typedef struct zfs_command {
 192         const char      *name;
 193         int             (*func)(int argc, char **argv);
 194         zfs_help_t      usage;
 195 } zfs_command_t;
 196
 197 /*
 198  * Master command table.  Each ZFS command has a name, associated function, and
 199  * usage message.  The usage messages need to be internationalized, so we have
 200  * to have a function to return the usage message based on a command index.
 201  *
 202  * These commands are organized according to how they are displayed in the usage
 203  * message.  An empty command (one with a NULL name) indicates an empty line in
 204  * the generic usage message.
 205  */
 206 static zfs_command_t command_table[] = {
 207         { "version",    zfs_do_version,         HELP_VERSION            },
 208         { NULL },
 209         { "create",     zfs_do_create,          HELP_CREATE             },
 210         { "destroy",    zfs_do_destroy,         HELP_DESTROY            },
 211         { NULL },
 212         { "snapshot",   zfs_do_snapshot,        HELP_SNAPSHOT           },
 213         { "rollback",   zfs_do_rollback,        HELP_ROLLBACK           },
 214         { "clone",      zfs_do_clone,           HELP_CLONE              },
 215         { "promote",    zfs_do_promote,         HELP_PROMOTE            },
 216         { "rename",     zfs_do_rename,          HELP_RENAME             },
 217         { "bookmark",   zfs_do_bookmark,        HELP_BOOKMARK           },
 218         { "program",    zfs_do_channel_program, HELP_CHANNEL_PROGRAM    },
 219         { NULL },
 220         { "list",       zfs_do_list,            HELP_LIST               },
 221         { NULL },
 222         { "set",        zfs_do_set,             HELP_SET                },
 223         { "get",        zfs_do_get,             HELP_GET                },
 224         { "inherit",    zfs_do_inherit,         HELP_INHERIT            },
 225         { "upgrade",    zfs_do_upgrade,         HELP_UPGRADE            },
 226         { NULL },
 227         { "userspace",  zfs_do_userspace,       HELP_USERSPACE          },
 228         { "groupspace", zfs_do_userspace,       HELP_GROUPSPACE         },
 229         { "projectspace", zfs_do_userspace,     HELP_PROJECTSPACE       },
 230         { NULL },
 231         { "project",    zfs_do_project,         HELP_PROJECT            },
 232         { NULL },
 233         { "mount",      zfs_do_mount,           HELP_MOUNT              },
 234         { "unmount",    zfs_do_unmount,         HELP_UNMOUNT            },
 235         { "share",      zfs_do_share,           HELP_SHARE              },
 236         { "unshare",    zfs_do_unshare,         HELP_UNSHARE            },
 237         { NULL },
 238         { "send",       zfs_do_send,            HELP_SEND               },
 239         { "receive",    zfs_do_receive,         HELP_RECEIVE            },
 240         { NULL },
 241         { "allow",      zfs_do_allow,           HELP_ALLOW              },
 242         { NULL },
 243         { "unallow",    zfs_do_unallow,         HELP_UNALLOW            },
 244         { NULL },
 245         { "hold",       zfs_do_hold,            HELP_HOLD               },
 246         { "holds",      zfs_do_holds,           HELP_HOLDS              },
 247         { "release",    zfs_do_release,         HELP_RELEASE            },
 248         { "diff",       zfs_do_diff,            HELP_DIFF               },
 249         { "load-key",   zfs_do_load_key,        HELP_LOAD_KEY           },
 250         { "unload-key", zfs_do_unload_key,      HELP_UNLOAD_KEY         },
 251         { "change-key", zfs_do_change_key,      HELP_CHANGE_KEY         },
 252         { "redact",     zfs_do_redact,          HELP_REDACT             },
 253         { "wait",       zfs_do_wait,            HELP_WAIT               },
 254
 255 #ifdef __FreeBSD__
 256         { "jail",       zfs_do_jail,            HELP_JAIL               },
 257         { "unjail",     zfs_do_unjail,          HELP_UNJAIL             },
 258 #endif
 259 };
 260
 261 #define NCOMMAND        (sizeof (command_table) / sizeof (command_table[0]))
 262
 263 zfs_command_t *current_command;
 264
 265 static const char *
 266 get_usage(zfs_help_t idx)
 267 {
 268         switch (idx) {
 269         case HELP_CLONE:
 270                 return (gettext("\tclone [-p] [-o property=value] ... "
 271                     "<snapshot> <filesystem|volume>\n"));
 272         case HELP_CREATE:
 273                 return (gettext("\tcreate [-Pnpv] [-o property=value] ... "
 274                     "<filesystem>\n"
 275                     "\tcreate [-Pnpsv] [-b blocksize] [-o property=value] ... "
 276                     "-V <size> <volume>\n"));
 277         case HELP_DESTROY:
 278                 return (gettext("\tdestroy [-fnpRrv] <filesystem|volume>\n"
 279                     "\tdestroy [-dnpRrv] "
 280                     "<filesystem|volume>@<snap>[%<snap>][,...]\n"
 281                     "\tdestroy <filesystem|volume>#<bookmark>\n"));
 282         case HELP_GET:
 283                 return (gettext("\tget [-rHp] [-d max] "
 284                     "[-o \"all\" | field[,...]]\n"
 285                     "\t    [-t type[,...]] [-s source[,...]]\n"
 286                     "\t    <\"all\" | property[,...]> "
 287                     "[filesystem|volume|snapshot|bookmark] ...\n"));
 288         case HELP_INHERIT:
 289                 return (gettext("\tinherit [-rS] <property> "
 290                     "<filesystem|volume|snapshot> ...\n"));
 291         case HELP_UPGRADE:
 292                 return (gettext("\tupgrade [-v]\n"
 293                     "\tupgrade [-r] [-V version] <-a | filesystem ...>\n"));
 294         case HELP_LIST:
 295                 return (gettext("\tlist [-Hp] [-r|-d max] [-o property[,...]] "
 296                     "[-s property]...\n\t    [-S property]... [-t type[,...]] "
 297                     "[filesystem|volume|snapshot] ...\n"));
 298         case HELP_MOUNT:
 299                 return (gettext("\tmount\n"
 300                     "\tmount [-flvO] [-o opts] <-a | filesystem>\n"));
 301         case HELP_PROMOTE:
 302                 return (gettext("\tpromote <clone-filesystem>\n"));
 303         case HELP_RECEIVE:
 304                 return (gettext("\treceive [-vMnsFhu] "
 305                     "[-o <property>=<value>] ... [-x <property>] ...\n"
 306                     "\t    <filesystem|volume|snapshot>\n"
 307                     "\treceive [-vMnsFhu] [-o <property>=<value>] ... "
 308                     "[-x <property>] ... \n"
 309                     "\t    [-d | -e] <filesystem>\n"
 310                     "\treceive -A <filesystem|volume>\n"));
 311         case HELP_RENAME:
 312                 return (gettext("\trename [-f] <filesystem|volume|snapshot> "
 313                     "<filesystem|volume|snapshot>\n"
 314                     "\trename -p [-f] <filesystem|volume> <filesystem|volume>\n"
 315                     "\trename -u [-f] <filesystem> <filesystem>\n"
 316                     "\trename -r <snapshot> <snapshot>\n"));
 317         case HELP_ROLLBACK:
 318                 return (gettext("\trollback [-rRf] <snapshot>\n"));
 319         case HELP_SEND:
 320                 return (gettext("\tsend [-DnPpRvLecwhb] [-[i|I] snapshot] "
 321                     "<snapshot>\n"
 322                     "\tsend [-nvPLecw] [-i snapshot|bookmark] "
 323                     "<filesystem|volume|snapshot>\n"
 324                     "\tsend [-DnPpvLec] [-i bookmark|snapshot] "
 325                     "--redact <bookmark> <snapshot>\n"
 326                     "\tsend [-nvPe] -t <receive_resume_token>\n"
 327                     "\tsend [-Pnv] --saved filesystem\n"));
 328         case HELP_SET:
 329                 return (gettext("\tset <property=value> ... "
 330                     "<filesystem|volume|snapshot> ...\n"));
 331         case HELP_SHARE:
 332                 return (gettext("\tshare [-l] <-a [nfs|smb] | filesystem>\n"));
 333         case HELP_SNAPSHOT:
 334                 return (gettext("\tsnapshot [-r] [-o property=value] ... "
 335                     "<filesystem|volume>@<snap> ...\n"));
 336         case HELP_UNMOUNT:
 337                 return (gettext("\tunmount [-fu] "
 338                     "<-a | filesystem|mountpoint>\n"));
 339         case HELP_UNSHARE:
 340                 return (gettext("\tunshare "
 341                     "<-a [nfs|smb] | filesystem|mountpoint>\n"));
 342         case HELP_ALLOW:
 343                 return (gettext("\tallow <filesystem|volume>\n"
 344                     "\tallow [-ldug] "
 345                     "<\"everyone\"|user|group>[,...] <perm|@setname>[,...]\n"
 346                     "\t    <filesystem|volume>\n"
 347                     "\tallow [-ld] -e <perm|@setname>[,...] "
 348                     "<filesystem|volume>\n"
 349                     "\tallow -c <perm|@setname>[,...] <filesystem|volume>\n"
 350                     "\tallow -s @setname <perm|@setname>[,...] "
 351                     "<filesystem|volume>\n"));
 352         case HELP_UNALLOW:
 353                 return (gettext("\tunallow [-rldug] "
 354                     "<\"everyone\"|user|group>[,...]\n"
 355                     "\t    [<perm|@setname>[,...]] <filesystem|volume>\n"
 356                     "\tunallow [-rld] -e [<perm|@setname>[,...]] "
 357                     "<filesystem|volume>\n"
 358                     "\tunallow [-r] -c [<perm|@setname>[,...]] "
 359                     "<filesystem|volume>\n"
 360                     "\tunallow [-r] -s @setname [<perm|@setname>[,...]] "
 361                     "<filesystem|volume>\n"));
 362         case HELP_USERSPACE:
 363                 return (gettext("\tuserspace [-Hinp] [-o field[,...]] "
 364                     "[-s field] ...\n"
 365                     "\t    [-S field] ... [-t type[,...]] "
 366                     "<filesystem|snapshot|path>\n"));
 367         case HELP_GROUPSPACE:
 368                 return (gettext("\tgroupspace [-Hinp] [-o field[,...]] "
 369                     "[-s field] ...\n"
 370                     "\t    [-S field] ... [-t type[,...]] "
 371                     "<filesystem|snapshot|path>\n"));
 372         case HELP_PROJECTSPACE:
 373                 return (gettext("\tprojectspace [-Hp] [-o field[,...]] "
 374                     "[-s field] ... \n"
 375                     "\t    [-S field] ... <filesystem|snapshot|path>\n"));
 376         case HELP_PROJECT:
 377                 return (gettext("\tproject [-d|-r] <directory|file ...>\n"
 378                     "\tproject -c [-0] [-d|-r] [-p id] <directory|file ...>\n"
 379                     "\tproject -C [-k] [-r] <directory ...>\n"
 380                     "\tproject [-p id] [-r] [-s] <directory ...>\n"));
 381         case HELP_HOLD:
 382                 return (gettext("\thold [-r] <tag> <snapshot> ...\n"));
 383         case HELP_HOLDS:
 384                 return (gettext("\tholds [-rH] <snapshot> ...\n"));
 385         case HELP_RELEASE:
 386                 return (gettext("\trelease [-r] <tag> <snapshot> ...\n"));
 387         case HELP_DIFF:
 388                 return (gettext("\tdiff [-FHt] <snapshot> "
 389                     "[snapshot|filesystem]\n"));
 390         case HELP_BOOKMARK:
 391                 return (gettext("\tbookmark <snapshot|bookmark> "
 392                     "<newbookmark>\n"));
 393         case HELP_CHANNEL_PROGRAM:
 394                 return (gettext("\tprogram [-jn] [-t <instruction limit>] "
 395                     "[-m <memory limit (b)>]\n"
 396                     "\t    <pool> <program file> [lua args...]\n"));
 397         case HELP_LOAD_KEY:
 398                 return (gettext("\tload-key [-rn] [-L <keylocation>] "
 399                     "<-a | filesystem|volume>\n"));
 400         case HELP_UNLOAD_KEY:
 401                 return (gettext("\tunload-key [-r] "
 402                     "<-a | filesystem|volume>\n"));
 403         case HELP_CHANGE_KEY:
 404                 return (gettext("\tchange-key [-l] [-o keyformat=<value>]\n"
 405                     "\t    [-o keylocation=<value>] [-o pbkdf2iters=<value>]\n"
 406                     "\t    <filesystem|volume>\n"
 407                     "\tchange-key -i [-l] <filesystem|volume>\n"));
 408         case HELP_VERSION:
 409                 return (gettext("\tversion\n"));
 410         case HELP_REDACT:
 411                 return (gettext("\tredact <snapshot> <bookmark> "
 412                     "<redaction_snapshot> ...\n"));
 413         case HELP_JAIL:
 414                 return (gettext("\tjail <jailid|jailname> <filesystem>\n"));
 415         case HELP_UNJAIL:
 416                 return (gettext("\tunjail <jailid|jailname> <filesystem>\n"));
 417         case HELP_WAIT:
 418                 return (gettext("\twait [-t <activity>] <filesystem>\n"));
 419         }
 420
 421         abort();
 422         /* NOTREACHED */
 423 }
 424
 425 void
 426 nomem(void)
 427 {
 428         (void) fprintf(stderr, gettext("internal error: out of memory\n"));
 429         exit(1);
 430 }
 431
 432 /*
 433  * Utility function to guarantee malloc() success.
 434  */
 435
 436 void *
 437 safe_malloc(size_t size)
 438 {
 439         void *data;
 440
 441         if ((data = calloc(1, size)) == NULL)
 442                 nomem();
 443
 444         return (data);
 445 }
 446
 447 static void *
 448 safe_realloc(void *data, size_t size)
 449 {
 450         void *newp;
 451         if ((newp = realloc(data, size)) == NULL) {
 452                 free(data);
 453                 nomem();
 454         }
 455
 456         return (newp);
 457 }
 458
 459 static char *
 460 safe_strdup(char *str)
 461 {
 462         char *dupstr = strdup(str);
 463
 464         if (dupstr == NULL)
 465                 nomem();
 466
 467         return (dupstr);
 468 }
 469
 470 /*
 471  * Callback routine that will print out information for each of
 472  * the properties.
 473  */
 474 static int
 475 usage_prop_cb(int prop, void *cb)
 476 {
 477         FILE *fp = cb;
 478
 479         (void) fprintf(fp, "\t%-15s ", zfs_prop_to_name(prop));
 480
 481         if (zfs_prop_readonly(prop))
 482                 (void) fprintf(fp, " NO    ");
 483         else
 484                 (void) fprintf(fp, "YES    ");
 485
 486         if (zfs_prop_inheritable(prop))
 487                 (void) fprintf(fp, "  YES   ");
 488         else
 489                 (void) fprintf(fp, "   NO   ");
 490
 491         if (zfs_prop_values(prop) == NULL)
 492                 (void) fprintf(fp, "-\n");
 493         else
 494                 (void) fprintf(fp, "%s\n", zfs_prop_values(prop));
 495
 496         return (ZPROP_CONT);
 497 }
 498
 499 /*
 500  * Display usage message.  If we're inside a command, display only the usage for
 501  * that command.  Otherwise, iterate over the entire command table and display
 502  * a complete usage message.
 503  */
 504 static void
 505 usage(boolean_t requested)
 506 {
 507         int i;
 508         boolean_t show_properties = B_FALSE;
 509         FILE *fp = requested ? stdout : stderr;
 510
 511         if (current_command == NULL) {
 512
 513                 (void) fprintf(fp, gettext("usage: zfs command args ...\n"));
 514                 (void) fprintf(fp,
 515                     gettext("where 'command' is one of the following:\n\n"));
 516
 517                 for (i = 0; i < NCOMMAND; i++) {
 518                         if (command_table[i].name == NULL)
 519                                 (void) fprintf(fp, "\n");
 520                         else
 521                                 (void) fprintf(fp, "%s",
 522                                     get_usage(command_table[i].usage));
 523                 }
 524
 525                 (void) fprintf(fp, gettext("\nEach dataset is of the form: "
 526                     "pool/[dataset/]*dataset[@name]\n"));
 527         } else {
 528                 (void) fprintf(fp, gettext("usage:\n"));
 529                 (void) fprintf(fp, "%s", get_usage(current_command->usage));
 530         }
 531
 532         if (current_command != NULL &&
 533             (strcmp(current_command->name, "set") == 0 ||
 534             strcmp(current_command->name, "get") == 0 ||
 535             strcmp(current_command->name, "inherit") == 0 ||
 536             strcmp(current_command->name, "list") == 0))
 537                 show_properties = B_TRUE;
 538
 539         if (show_properties) {
 540                 (void) fprintf(fp,
 541                     gettext("\nThe following properties are supported:\n"));
 542
 543                 (void) fprintf(fp, "\n\t%-14s %s  %s   %s\n\n",
 544                     "PROPERTY", "EDIT", "INHERIT", "VALUES");
 545
 546                 /* Iterate over all properties */
 547                 (void) zprop_iter(usage_prop_cb, fp, B_FALSE, B_TRUE,
 548                     ZFS_TYPE_DATASET);
 549
 550                 (void) fprintf(fp, "\t%-15s ", "userused@...");
 551                 (void) fprintf(fp, " NO       NO   <size>\n");
 552                 (void) fprintf(fp, "\t%-15s ", "groupused@...");
 553                 (void) fprintf(fp, " NO       NO   <size>\n");
 554                 (void) fprintf(fp, "\t%-15s ", "projectused@...");
 555                 (void) fprintf(fp, " NO       NO   <size>\n");
 556                 (void) fprintf(fp, "\t%-15s ", "userobjused@...");
 557                 (void) fprintf(fp, " NO       NO   <size>\n");
 558                 (void) fprintf(fp, "\t%-15s ", "groupobjused@...");
 559                 (void) fprintf(fp, " NO       NO   <size>\n");
 560                 (void) fprintf(fp, "\t%-15s ", "projectobjused@...");
 561                 (void) fprintf(fp, " NO       NO   <size>\n");
 562                 (void) fprintf(fp, "\t%-15s ", "userquota@...");
 563                 (void) fprintf(fp, "YES       NO   <size> | none\n");
 564                 (void) fprintf(fp, "\t%-15s ", "groupquota@...");
 565                 (void) fprintf(fp, "YES       NO   <size> | none\n");
 566                 (void) fprintf(fp, "\t%-15s ", "projectquota@...");
 567                 (void) fprintf(fp, "YES       NO   <size> | none\n");
 568                 (void) fprintf(fp, "\t%-15s ", "userobjquota@...");
 569                 (void) fprintf(fp, "YES       NO   <size> | none\n");
 570                 (void) fprintf(fp, "\t%-15s ", "groupobjquota@...");
 571                 (void) fprintf(fp, "YES       NO   <size> | none\n");
 572                 (void) fprintf(fp, "\t%-15s ", "projectobjquota@...");
 573                 (void) fprintf(fp, "YES       NO   <size> | none\n");
 574                 (void) fprintf(fp, "\t%-15s ", "written@<snap>");
 575                 (void) fprintf(fp, " NO       NO   <size>\n");
 576                 (void) fprintf(fp, "\t%-15s ", "written#<bookmark>");
 577                 (void) fprintf(fp, " NO       NO   <size>\n");
 578
 579                 (void) fprintf(fp, gettext("\nSizes are specified in bytes "
 580                     "with standard units such as K, M, G, etc.\n"));
 581                 (void) fprintf(fp, gettext("\nUser-defined properties can "
 582                     "be specified by using a name containing a colon (:).\n"));
 583                 (void) fprintf(fp, gettext("\nThe {user|group|project}"
 584                     "[obj]{used|quota}@ properties must be appended with\n"
 585                     "a user|group|project specifier of one of these forms:\n"
 586                     "    POSIX name      (eg: \"matt\")\n"
 587                     "    POSIX id        (eg: \"126829\")\n"
 588                     "    SMB name@domain (eg: \"matt@sun\")\n"
 589                     "    SMB SID         (eg: \"S-1-234-567-89\")\n"));
 590         } else {
 591                 (void) fprintf(fp,
 592                     gettext("\nFor the property list, run: %s\n"),
 593                     "zfs set|get");
 594                 (void) fprintf(fp,
 595                     gettext("\nFor the delegated permission list, run: %s\n"),
 596                     "zfs allow|unallow");
 597         }
 598
 599         /*
 600          * See comments at end of main().
 601          */
 602         if (getenv("ZFS_ABORT") != NULL) {
 603                 (void) printf("dumping core by request\n");
 604                 abort();
 605         }
 606
 607         exit(requested ? 0 : 2);
 608 }
 609
 610 /*
 611  * Take a property=value argument string and add it to the given nvlist.
 612  * Modifies the argument inplace.
 613  */
 614 static boolean_t
 615 parseprop(nvlist_t *props, char *propname)
 616 {
 617         char *propval;
 618
 619         if ((propval = strchr(propname, '=')) == NULL) {
 620                 (void) fprintf(stderr, gettext("missing "
 621                     "'=' for property=value argument\n"));
 622                 return (B_FALSE);
 623         }
 624         *propval = '\0';
 625         propval++;
 626         if (nvlist_exists(props, propname)) {
 627                 (void) fprintf(stderr, gettext("property '%s' "
 628                     "specified multiple times\n"), propname);
 629                 return (B_FALSE);
 630         }
 631         if (nvlist_add_string(props, propname, propval) != 0)
 632                 nomem();
 633         return (B_TRUE);
 634 }
 635
 636 /*
 637  * Take a property name argument and add it to the given nvlist.
 638  * Modifies the argument inplace.
 639  */
 640 static boolean_t
 641 parsepropname(nvlist_t *props, char *propname)
 642 {
 643         if (strchr(propname, '=') != NULL) {
 644                 (void) fprintf(stderr, gettext("invalid character "
 645                     "'=' in property argument\n"));
 646                 return (B_FALSE);
 647         }
 648         if (nvlist_exists(props, propname)) {
 649                 (void) fprintf(stderr, gettext("property '%s' "
 650                     "specified multiple times\n"), propname);
 651                 return (B_FALSE);
 652         }
 653         if (nvlist_add_boolean(props, propname) != 0)
 654                 nomem();
 655         return (B_TRUE);
 656 }
 657
 658 static int
 659 parse_depth(char *opt, int *flags)
 660 {
 661         char *tmp;
 662         int depth;
 663
 664         depth = (int)strtol(opt, &tmp, 0);
 665         if (*tmp) {
 666                 (void) fprintf(stderr,
 667                     gettext("%s is not an integer\n"), optarg);
 668                 usage(B_FALSE);
 669         }
 670         if (depth < 0) {
 671                 (void) fprintf(stderr,
 672                     gettext("Depth can not be negative.\n"));
 673                 usage(B_FALSE);
 674         }
 675         *flags |= (ZFS_ITER_DEPTH_LIMIT|ZFS_ITER_RECURSE);
 676         return (depth);
 677 }
 678
 679 #define PROGRESS_DELAY 2                /* seconds */
 680
 681 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";
 682 static time_t pt_begin;
 683 static char *pt_header = NULL;
 684 static boolean_t pt_shown;
 685
 686 static void
 687 start_progress_timer(void)
 688 {
 689         pt_begin = time(NULL) + PROGRESS_DELAY;
 690         pt_shown = B_FALSE;
 691 }
 692
 693 static void
 694 set_progress_header(char *header)
 695 {
 696         assert(pt_header == NULL);
 697         pt_header = safe_strdup(header);
 698         if (pt_shown) {
 699                 (void) printf("%s: ", header);
 700                 (void) fflush(stdout);
 701         }
 702 }
 703
 704 static void
 705 update_progress(char *update)
 706 {
 707         if (!pt_shown && time(NULL) > pt_begin) {
 708                 int len = strlen(update);
 709
 710                 (void) printf("%s: %s%*.*s", pt_header, update, len, len,
 711                     pt_reverse);
 712                 (void) fflush(stdout);
 713                 pt_shown = B_TRUE;
 714         } else if (pt_shown) {
 715                 int len = strlen(update);
 716
 717                 (void) printf("%s%*.*s", update, len, len, pt_reverse);
 718                 (void) fflush(stdout);
 719         }
 720 }
 721
 722 static void
 723 finish_progress(char *done)
 724 {
 725         if (pt_shown) {
 726                 (void) printf("%s\n", done);
 727                 (void) fflush(stdout);
 728         }
 729         free(pt_header);
 730         pt_header = NULL;
 731 }
 732
 733 static int
 734 zfs_mount_and_share(libzfs_handle_t *hdl, const char *dataset, zfs_type_t type)
 735 {
 736         zfs_handle_t *zhp = NULL;
 737         int ret = 0;
 738
 739         zhp = zfs_open(hdl, dataset, type);
 740         if (zhp == NULL)
 741                 return (1);
 742
 743         /*
 744          * Volumes may neither be mounted or shared.  Potentially in the
 745          * future filesystems detected on these volumes could be mounted.
 746          */
 747         if (zfs_get_type(zhp) == ZFS_TYPE_VOLUME) {
 748                 zfs_close(zhp);
 749                 return (0);
 750         }
 751
 752         /*
 753          * Mount and/or share the new filesystem as appropriate.  We provide a
 754          * verbose error message to let the user know that their filesystem was
 755          * in fact created, even if we failed to mount or share it.
 756          *
 757          * If the user doesn't want the dataset automatically mounted, then
 758          * skip the mount/share step
 759          */
 760         if (zfs_prop_valid_for_type(ZFS_PROP_CANMOUNT, type, B_FALSE) &&
 761             zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) == ZFS_CANMOUNT_ON) {
 762                 if (zfs_mount_delegation_check()) {
 763                         (void) fprintf(stderr, gettext("filesystem "
 764                             "successfully created, but it may only be "
 765                             "mounted by root\n"));
 766                         ret = 1;
 767                 } else if (zfs_mount(zhp, NULL, 0) != 0) {
 768                         (void) fprintf(stderr, gettext("filesystem "
 769                             "successfully created, but not mounted\n"));
 770                         ret = 1;
 771                 } else if (zfs_share(zhp) != 0) {
 772                         (void) fprintf(stderr, gettext("filesystem "
 773                             "successfully created, but not shared\n"));
 774                         ret = 1;
 775                 }
 776                 zfs_commit_all_shares();
 777         }
 778
 779         zfs_close(zhp);
 780
 781         return (ret);
 782 }
 783
 784 /*
 785  * zfs clone [-p] [-o prop=value] ... <snap> <fs | vol>
 786  *
 787  * Given an existing dataset, create a writable copy whose initial contents
 788  * are the same as the source.  The newly created dataset maintains a
 789  * dependency on the original; the original cannot be destroyed so long as
 790  * the clone exists.
 791  *
 792  * The '-p' flag creates all the non-existing ancestors of the target first.
 793  */
 794 static int
 795 zfs_do_clone(int argc, char **argv)
 796 {
 797         zfs_handle_t *zhp = NULL;
 798         boolean_t parents = B_FALSE;
 799         nvlist_t *props;
 800         int ret = 0;
 801         int c;
 802
 803         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
 804                 nomem();
 805
 806         /* check options */
 807         while ((c = getopt(argc, argv, "o:p")) != -1) {
 808                 switch (c) {
 809                 case 'o':
 810                         if (!parseprop(props, optarg)) {
 811                                 nvlist_free(props);
 812                                 return (1);
 813                         }
 814                         break;
 815                 case 'p':
 816                         parents = B_TRUE;
 817                         break;
 818                 case '?':
 819                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
 820                             optopt);
 821                         goto usage;
 822                 }
 823         }
 824
 825         argc -= optind;
 826         argv += optind;
 827
 828         /* check number of arguments */
 829         if (argc < 1) {
 830                 (void) fprintf(stderr, gettext("missing source dataset "
 831                     "argument\n"));
 832                 goto usage;
 833         }
 834         if (argc < 2) {
 835                 (void) fprintf(stderr, gettext("missing target dataset "
 836                     "argument\n"));
 837                 goto usage;
 838         }
 839         if (argc > 2) {
 840                 (void) fprintf(stderr, gettext("too many arguments\n"));
 841                 goto usage;
 842         }
 843
 844         /* open the source dataset */
 845         if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL) {
 846                 nvlist_free(props);
 847                 return (1);
 848         }
 849
 850         if (parents && zfs_name_valid(argv[1], ZFS_TYPE_FILESYSTEM |
 851             ZFS_TYPE_VOLUME)) {
 852                 /*
 853                  * Now create the ancestors of the target dataset.  If the
 854                  * target already exists and '-p' option was used we should not
 855                  * complain.
 856                  */
 857                 if (zfs_dataset_exists(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM |
 858                     ZFS_TYPE_VOLUME)) {
 859                         zfs_close(zhp);
 860                         nvlist_free(props);
 861                         return (0);
 862                 }
 863                 if (zfs_create_ancestors(g_zfs, argv[1]) != 0) {
 864                         zfs_close(zhp);
 865                         nvlist_free(props);
 866                         return (1);
 867                 }
 868         }
 869
 870         /* pass to libzfs */
 871         ret = zfs_clone(zhp, argv[1], props);
 872
 873         /* create the mountpoint if necessary */
 874         if (ret == 0) {
 875                 if (log_history) {
 876                         (void) zpool_log_history(g_zfs, history_str);
 877                         log_history = B_FALSE;
 878                 }
 879
 880                 ret = zfs_mount_and_share(g_zfs, argv[1], ZFS_TYPE_DATASET);
 881         }
 882
 883         zfs_close(zhp);
 884         nvlist_free(props);
 885
 886         return (!!ret);
 887
 888 usage:
 889         ASSERT3P(zhp, ==, NULL);
 890         nvlist_free(props);
 891         usage(B_FALSE);
 892         return (-1);
 893 }
 894
 895 /*
 896  * zfs create [-Pnpv] [-o prop=value] ... fs
 897  * zfs create [-Pnpsv] [-b blocksize] [-o prop=value] ... -V vol size
 898  *
 899  * Create a new dataset.  This command can be used to create filesystems
 900  * and volumes.  Snapshot creation is handled by 'zfs snapshot'.
 901  * For volumes, the user must specify a size to be used.
 902  *
 903  * The '-s' flag applies only to volumes, and indicates that we should not try
 904  * to set the reservation for this volume.  By default we set a reservation
 905  * equal to the size for any volume.  For pools with SPA_VERSION >=
 906  * SPA_VERSION_REFRESERVATION, we set a refreservation instead.
 907  *
 908  * The '-p' flag creates all the non-existing ancestors of the target first.
 909  *
 910  * The '-n' flag is no-op (dry run) mode.  This will perform a user-space sanity
 911  * check of arguments and properties, but does not check for permissions,
 912  * available space, etc.
 913  *
 914  * The '-v' flag is for verbose output.
 915  *
 916  * The '-P' flag is used for parseable output.  It implies '-v'.
 917  */
 918 static int
 919 zfs_do_create(int argc, char **argv)
 920 {
 921         zfs_type_t type = ZFS_TYPE_FILESYSTEM;
 922         zpool_handle_t *zpool_handle = NULL;
 923         nvlist_t *real_props = NULL;
 924         uint64_t volsize = 0;
 925         int c;
 926         boolean_t noreserve = B_FALSE;
 927         boolean_t bflag = B_FALSE;
 928         boolean_t parents = B_FALSE;
 929         boolean_t dryrun = B_FALSE;
 930         boolean_t verbose = B_FALSE;
 931         boolean_t parseable = B_FALSE;
 932         int ret = 1;
 933         nvlist_t *props;
 934         uint64_t intval;
 935
 936         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
 937                 nomem();
 938
 939         /* check options */
 940         while ((c = getopt(argc, argv, ":PV:b:nso:pv")) != -1) {
 941                 switch (c) {
 942                 case 'V':
 943                         type = ZFS_TYPE_VOLUME;
 944                         if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
 945                                 (void) fprintf(stderr, gettext("bad volume "
 946                                     "size '%s': %s\n"), optarg,
 947                                     libzfs_error_description(g_zfs));
 948                                 goto error;
 949                         }
 950
 951                         if (nvlist_add_uint64(props,
 952                             zfs_prop_to_name(ZFS_PROP_VOLSIZE), intval) != 0)
 953                                 nomem();
 954                         volsize = intval;
 955                         break;
 956                 case 'P':
 957                         verbose = B_TRUE;
 958                         parseable = B_TRUE;
 959                         break;
 960                 case 'p':
 961                         parents = B_TRUE;
 962                         break;
 963                 case 'b':
 964                         bflag = B_TRUE;
 965                         if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
 966                                 (void) fprintf(stderr, gettext("bad volume "
 967                                     "block size '%s': %s\n"), optarg,
 968                                     libzfs_error_description(g_zfs));
 969                                 goto error;
 970                         }
 971
 972                         if (nvlist_add_uint64(props,
 973                             zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
 974                             intval) != 0)
 975                                 nomem();
 976                         break;
 977                 case 'n':
 978                         dryrun = B_TRUE;
 979                         break;
 980                 case 'o':
 981                         if (!parseprop(props, optarg))
 982                                 goto error;
 983                         break;
 984                 case 's':
 985                         noreserve = B_TRUE;
 986                         break;
 987                 case 'v':
 988                         verbose = B_TRUE;
 989                         break;
 990                 case ':':
 991                         (void) fprintf(stderr, gettext("missing size "
 992                             "argument\n"));
 993                         goto badusage;
 994                 case '?':
 995                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
 996                             optopt);
 997                         goto badusage;
 998                 }
 999         }
1000
1001         if ((bflag || noreserve) && type != ZFS_TYPE_VOLUME) {
1002                 (void) fprintf(stderr, gettext("'-s' and '-b' can only be "
1003                     "used when creating a volume\n"));
1004                 goto badusage;
1005         }
1006
1007         argc -= optind;
1008         argv += optind;
1009
1010         /* check number of arguments */
1011         if (argc == 0) {
1012                 (void) fprintf(stderr, gettext("missing %s argument\n"),
1013                     zfs_type_to_name(type));
1014                 goto badusage;
1015         }
1016         if (argc > 1) {
1017                 (void) fprintf(stderr, gettext("too many arguments\n"));
1018                 goto badusage;
1019         }
1020
1021         if (dryrun || (type == ZFS_TYPE_VOLUME && !noreserve)) {
1022                 char msg[ZFS_MAX_DATASET_NAME_LEN * 2];
1023                 char *p;
1024
1025                 if ((p = strchr(argv[0], '/')) != NULL)
1026                         *p = '\0';
1027                 zpool_handle = zpool_open(g_zfs, argv[0]);
1028                 if (p != NULL)
1029                         *p = '/';
1030                 if (zpool_handle == NULL)
1031                         goto error;
1032
1033                 (void) snprintf(msg, sizeof (msg),
1034                     dryrun ? gettext("cannot verify '%s'") :
1035                     gettext("cannot create '%s'"), argv[0]);
1036                 if (props && (real_props = zfs_valid_proplist(g_zfs, type,
1037                     props, 0, NULL, zpool_handle, B_TRUE, msg)) == NULL) {
1038                         zpool_close(zpool_handle);
1039                         goto error;
1040                 }
1041         }
1042
1043         /*
1044          * if volsize is not a multiple of volblocksize, round it up to the
1045          * nearest multiple of the volblocksize
1046          */
1047         if (type == ZFS_TYPE_VOLUME) {
1048                 uint64_t volblocksize;
1049
1050                 if (nvlist_lookup_uint64(props,
1051                     zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
1052                     &volblocksize) != 0)
1053                         volblocksize = ZVOL_DEFAULT_BLOCKSIZE;
1054
1055                 if (volsize % volblocksize) {
1056                         volsize = P2ROUNDUP_TYPED(volsize, volblocksize,
1057                             uint64_t);
1058
1059                         if (nvlist_add_uint64(props,
1060                             zfs_prop_to_name(ZFS_PROP_VOLSIZE), volsize) != 0) {
1061                                 nvlist_free(props);
1062                                 nomem();
1063                         }
1064                 }
1065         }
1066
1067
1068         if (type == ZFS_TYPE_VOLUME && !noreserve) {
1069                 uint64_t spa_version;
1070                 zfs_prop_t resv_prop;
1071                 char *strval;
1072
1073                 spa_version = zpool_get_prop_int(zpool_handle,
1074                     ZPOOL_PROP_VERSION, NULL);
1075                 if (spa_version >= SPA_VERSION_REFRESERVATION)
1076                         resv_prop = ZFS_PROP_REFRESERVATION;
1077                 else
1078                         resv_prop = ZFS_PROP_RESERVATION;
1079
1080                 volsize = zvol_volsize_to_reservation(zpool_handle, volsize,
1081                     real_props);
1082
1083                 if (nvlist_lookup_string(props, zfs_prop_to_name(resv_prop),
1084                     &strval) != 0) {
1085                         if (nvlist_add_uint64(props,
1086                             zfs_prop_to_name(resv_prop), volsize) != 0) {
1087                                 nvlist_free(props);
1088                                 nomem();
1089                         }
1090                 }
1091         }
1092         if (zpool_handle != NULL) {
1093                 zpool_close(zpool_handle);
1094                 nvlist_free(real_props);
1095         }
1096
1097         if (parents && zfs_name_valid(argv[0], type)) {
1098                 /*
1099                  * Now create the ancestors of target dataset.  If the target
1100                  * already exists and '-p' option was used we should not
1101                  * complain.
1102                  */
1103                 if (zfs_dataset_exists(g_zfs, argv[0], type)) {
1104                         ret = 0;
1105                         goto error;
1106                 }
1107                 if (verbose) {
1108                         (void) printf(parseable ? "create_ancestors\t%s\n" :
1109                             dryrun ?  "would create ancestors of %s\n" :
1110                             "create ancestors of %s\n", argv[0]);
1111                 }
1112                 if (!dryrun) {
1113                         if (zfs_create_ancestors(g_zfs, argv[0]) != 0) {
1114                                 goto error;
1115                         }
1116                 }
1117         }
1118
1119         if (verbose) {
1120                 nvpair_t *nvp = NULL;
1121                 (void) printf(parseable ? "create\t%s\n" :
1122                     dryrun ? "would create %s\n" : "create %s\n", argv[0]);
1123                 while ((nvp = nvlist_next_nvpair(props, nvp)) != NULL) {
1124                         uint64_t uval;
1125                         char *sval;
1126
1127                         switch (nvpair_type(nvp)) {
1128                         case DATA_TYPE_UINT64:
1129                                 VERIFY0(nvpair_value_uint64(nvp, &uval));
1130                                 (void) printf(parseable ?
1131                                     "property\t%s\t%llu\n" : "\t%s=%llu\n",
1132                                     nvpair_name(nvp), (u_longlong_t)uval);
1133                                 break;
1134                         case DATA_TYPE_STRING:
1135                                 VERIFY0(nvpair_value_string(nvp, &sval));
1136                                 (void) printf(parseable ?
1137                                     "property\t%s\t%s\n" : "\t%s=%s\n",
1138                                     nvpair_name(nvp), sval);
1139                                 break;
1140                         default:
1141                                 (void) fprintf(stderr, "property '%s' "
1142                                     "has illegal type %d\n",
1143                                     nvpair_name(nvp), nvpair_type(nvp));
1144                                 abort();
1145                         }
1146                 }
1147         }
1148         if (dryrun) {
1149                 ret = 0;
1150                 goto error;
1151         }
1152
1153         /* pass to libzfs */
1154         if (zfs_create(g_zfs, argv[0], type, props) != 0)
1155                 goto error;
1156
1157         if (log_history) {
1158                 (void) zpool_log_history(g_zfs, history_str);
1159                 log_history = B_FALSE;
1160         }
1161
1162         ret = zfs_mount_and_share(g_zfs, argv[0], ZFS_TYPE_DATASET);
1163 error:
1164         nvlist_free(props);
1165         return (ret);
1166 badusage:
1167         nvlist_free(props);
1168         usage(B_FALSE);
1169         return (2);
1170 }
1171
1172 /*
1173  * zfs destroy [-rRf] <fs, vol>
1174  * zfs destroy [-rRd] <snap>
1175  *
1176  *      -r      Recursively destroy all children
1177  *      -R      Recursively destroy all dependents, including clones
1178  *      -f      Force unmounting of any dependents
1179  *      -d      If we can't destroy now, mark for deferred destruction
1180  *
1181  * Destroys the given dataset.  By default, it will unmount any filesystems,
1182  * and refuse to destroy a dataset that has any dependents.  A dependent can
1183  * either be a child, or a clone of a child.
1184  */
1185 typedef struct destroy_cbdata {
1186         boolean_t       cb_first;
1187         boolean_t       cb_force;
1188         boolean_t       cb_recurse;
1189         boolean_t       cb_error;
1190         boolean_t       cb_doclones;
1191         zfs_handle_t    *cb_target;
1192         boolean_t       cb_defer_destroy;
1193         boolean_t       cb_verbose;
1194         boolean_t       cb_parsable;
1195         boolean_t       cb_dryrun;
1196         nvlist_t        *cb_nvl;
1197         nvlist_t        *cb_batchedsnaps;
1198
1199         /* first snap in contiguous run */
1200         char            *cb_firstsnap;
1201         /* previous snap in contiguous run */
1202         char            *cb_prevsnap;
1203         int64_t         cb_snapused;
1204         char            *cb_snapspec;
1205         char            *cb_bookmark;
1206         uint64_t        cb_snap_count;
1207 } destroy_cbdata_t;
1208
1209 /*
1210  * Check for any dependents based on the '-r' or '-R' flags.
1211  */
1212 static int
1213 destroy_check_dependent(zfs_handle_t *zhp, void *data)
1214 {
1215         destroy_cbdata_t *cbp = data;
1216         const char *tname = zfs_get_name(cbp->cb_target);
1217         const char *name = zfs_get_name(zhp);
1218
1219         if (strncmp(tname, name, strlen(tname)) == 0 &&
1220             (name[strlen(tname)] == '/' || name[strlen(tname)] == '@')) {
1221                 /*
1222                  * This is a direct descendant, not a clone somewhere else in
1223                  * the hierarchy.
1224                  */
1225                 if (cbp->cb_recurse)
1226                         goto out;
1227
1228                 if (cbp->cb_first) {
1229                         (void) fprintf(stderr, gettext("cannot destroy '%s': "
1230                             "%s has children\n"),
1231                             zfs_get_name(cbp->cb_target),
1232                             zfs_type_to_name(zfs_get_type(cbp->cb_target)));
1233                         (void) fprintf(stderr, gettext("use '-r' to destroy "
1234                             "the following datasets:\n"));
1235                         cbp->cb_first = B_FALSE;
1236                         cbp->cb_error = B_TRUE;
1237                 }
1238
1239                 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
1240         } else {
1241                 /*
1242                  * This is a clone.  We only want to report this if the '-r'
1243                  * wasn't specified, or the target is a snapshot.
1244                  */
1245                 if (!cbp->cb_recurse &&
1246                     zfs_get_type(cbp->cb_target) != ZFS_TYPE_SNAPSHOT)
1247                         goto out;
1248
1249                 if (cbp->cb_first) {
1250                         (void) fprintf(stderr, gettext("cannot destroy '%s': "
1251                             "%s has dependent clones\n"),
1252                             zfs_get_name(cbp->cb_target),
1253                             zfs_type_to_name(zfs_get_type(cbp->cb_target)));
1254                         (void) fprintf(stderr, gettext("use '-R' to destroy "
1255                             "the following datasets:\n"));
1256                         cbp->cb_first = B_FALSE;
1257                         cbp->cb_error = B_TRUE;
1258                         cbp->cb_dryrun = B_TRUE;
1259                 }
1260
1261                 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
1262         }
1263
1264 out:
1265         zfs_close(zhp);
1266         return (0);
1267 }
1268
1269 static int
1270 destroy_batched(destroy_cbdata_t *cb)
1271 {
1272         int error = zfs_destroy_snaps_nvl(g_zfs,
1273             cb->cb_batchedsnaps, B_FALSE);
1274         fnvlist_free(cb->cb_batchedsnaps);
1275         cb->cb_batchedsnaps = fnvlist_alloc();
1276         return (error);
1277 }
1278
1279 static int
1280 destroy_callback(zfs_handle_t *zhp, void *data)
1281 {
1282         destroy_cbdata_t *cb = data;
1283         const char *name = zfs_get_name(zhp);
1284         int error;
1285
1286         if (cb->cb_verbose) {
1287                 if (cb->cb_parsable) {
1288                         (void) printf("destroy\t%s\n", name);
1289                 } else if (cb->cb_dryrun) {
1290                         (void) printf(gettext("would destroy %s\n"),
1291                             name);
1292                 } else {
1293                         (void) printf(gettext("will destroy %s\n"),
1294                             name);
1295                 }
1296         }
1297
1298         /*
1299          * Ignore pools (which we've already flagged as an error before getting
1300          * here).
1301          */
1302         if (strchr(zfs_get_name(zhp), '/') == NULL &&
1303             zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
1304                 zfs_close(zhp);
1305                 return (0);
1306         }
1307         if (cb->cb_dryrun) {
1308                 zfs_close(zhp);
1309                 return (0);
1310         }
1311
1312         /*
1313          * We batch up all contiguous snapshots (even of different
1314          * filesystems) and destroy them with one ioctl.  We can't
1315          * simply do all snap deletions and then all fs deletions,
1316          * because we must delete a clone before its origin.
1317          */
1318         if (zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT) {
1319                 cb->cb_snap_count++;
1320                 fnvlist_add_boolean(cb->cb_batchedsnaps, name);
1321                 if (cb->cb_snap_count % 10 == 0 && cb->cb_defer_destroy)
1322                         error = destroy_batched(cb);
1323         } else {
1324                 error = destroy_batched(cb);
1325                 if (error != 0 ||
1326                     zfs_unmount(zhp, NULL, cb->cb_force ? MS_FORCE : 0) != 0 ||
1327                     zfs_destroy(zhp, cb->cb_defer_destroy) != 0) {
1328                         zfs_close(zhp);
1329                         /*
1330                          * When performing a recursive destroy we ignore errors
1331                          * so that the recursive destroy could continue
1332                          * destroying past problem datasets
1333                          */
1334                         if (cb->cb_recurse) {
1335                                 cb->cb_error = B_TRUE;
1336                                 return (0);
1337                         }
1338                         return (-1);
1339                 }
1340         }
1341
1342         zfs_close(zhp);
1343         return (0);
1344 }
1345
1346 static int
1347 destroy_print_cb(zfs_handle_t *zhp, void *arg)
1348 {
1349         destroy_cbdata_t *cb = arg;
1350         const char *name = zfs_get_name(zhp);
1351         int err = 0;
1352
1353         if (nvlist_exists(cb->cb_nvl, name)) {
1354                 if (cb->cb_firstsnap == NULL)
1355                         cb->cb_firstsnap = strdup(name);
1356                 if (cb->cb_prevsnap != NULL)
1357                         free(cb->cb_prevsnap);
1358                 /* this snap continues the current range */
1359                 cb->cb_prevsnap = strdup(name);
1360                 if (cb->cb_firstsnap == NULL || cb->cb_prevsnap == NULL)
1361                         nomem();
1362                 if (cb->cb_verbose) {
1363                         if (cb->cb_parsable) {
1364                                 (void) printf("destroy\t%s\n", name);
1365                         } else if (cb->cb_dryrun) {
1366                                 (void) printf(gettext("would destroy %s\n"),
1367                                     name);
1368                         } else {
1369                                 (void) printf(gettext("will destroy %s\n"),
1370                                     name);
1371                         }
1372                 }
1373         } else if (cb->cb_firstsnap != NULL) {
1374                 /* end of this range */
1375                 uint64_t used = 0;
1376                 err = lzc_snaprange_space(cb->cb_firstsnap,
1377                     cb->cb_prevsnap, &used);
1378                 cb->cb_snapused += used;
1379                 free(cb->cb_firstsnap);
1380                 cb->cb_firstsnap = NULL;
1381                 free(cb->cb_prevsnap);
1382                 cb->cb_prevsnap = NULL;
1383         }
1384         zfs_close(zhp);
1385         return (err);
1386 }
1387
1388 static int
1389 destroy_print_snapshots(zfs_handle_t *fs_zhp, destroy_cbdata_t *cb)
1390 {
1391         int err;
1392         assert(cb->cb_firstsnap == NULL);
1393         assert(cb->cb_prevsnap == NULL);
1394         err = zfs_iter_snapshots_sorted(fs_zhp, destroy_print_cb, cb, 0, 0);
1395         if (cb->cb_firstsnap != NULL) {
1396                 uint64_t used = 0;
1397                 if (err == 0) {
1398                         err = lzc_snaprange_space(cb->cb_firstsnap,
1399                             cb->cb_prevsnap, &used);
1400                 }
1401                 cb->cb_snapused += used;
1402                 free(cb->cb_firstsnap);
1403                 cb->cb_firstsnap = NULL;
1404                 free(cb->cb_prevsnap);
1405                 cb->cb_prevsnap = NULL;
1406         }
1407         return (err);
1408 }
1409
1410 static int
1411 snapshot_to_nvl_cb(zfs_handle_t *zhp, void *arg)
1412 {
1413         destroy_cbdata_t *cb = arg;
1414         int err = 0;
1415
1416         /* Check for clones. */
1417         if (!cb->cb_doclones && !cb->cb_defer_destroy) {
1418                 cb->cb_target = zhp;
1419                 cb->cb_first = B_TRUE;
1420                 err = zfs_iter_dependents(zhp, B_TRUE,
1421                     destroy_check_dependent, cb);
1422         }
1423
1424         if (err == 0) {
1425                 if (nvlist_add_boolean(cb->cb_nvl, zfs_get_name(zhp)))
1426                         nomem();
1427         }
1428         zfs_close(zhp);
1429         return (err);
1430 }
1431
1432 static int
1433 gather_snapshots(zfs_handle_t *zhp, void *arg)
1434 {
1435         destroy_cbdata_t *cb = arg;
1436         int err = 0;
1437
1438         err = zfs_iter_snapspec(zhp, cb->cb_snapspec, snapshot_to_nvl_cb, cb);
1439         if (err == ENOENT)
1440                 err = 0;
1441         if (err != 0)
1442                 goto out;
1443
1444         if (cb->cb_verbose) {
1445                 err = destroy_print_snapshots(zhp, cb);
1446                 if (err != 0)
1447                         goto out;
1448         }
1449
1450         if (cb->cb_recurse)
1451                 err = zfs_iter_filesystems(zhp, gather_snapshots, cb);
1452
1453 out:
1454         zfs_close(zhp);
1455         return (err);
1456 }
1457
1458 static int
1459 destroy_clones(destroy_cbdata_t *cb)
1460 {
1461         nvpair_t *pair;
1462         for (pair = nvlist_next_nvpair(cb->cb_nvl, NULL);
1463             pair != NULL;
1464             pair = nvlist_next_nvpair(cb->cb_nvl, pair)) {
1465                 zfs_handle_t *zhp = zfs_open(g_zfs, nvpair_name(pair),
1466                     ZFS_TYPE_SNAPSHOT);
1467                 if (zhp != NULL) {
1468                         boolean_t defer = cb->cb_defer_destroy;
1469                         int err;
1470
1471                         /*
1472                          * We can't defer destroy non-snapshots, so set it to
1473                          * false while destroying the clones.
1474                          */
1475                         cb->cb_defer_destroy = B_FALSE;
1476                         err = zfs_iter_dependents(zhp, B_FALSE,
1477                             destroy_callback, cb);
1478                         cb->cb_defer_destroy = defer;
1479                         zfs_close(zhp);
1480                         if (err != 0)
1481                                 return (err);
1482                 }
1483         }
1484         return (0);
1485 }
1486
1487 static int
1488 zfs_do_destroy(int argc, char **argv)
1489 {
1490         destroy_cbdata_t cb = { 0 };
1491         int rv = 0;
1492         int err = 0;
1493         int c;
1494         zfs_handle_t *zhp = NULL;
1495         char *at, *pound;
1496         zfs_type_t type = ZFS_TYPE_DATASET;
1497
1498         /* check options */
1499         while ((c = getopt(argc, argv, "vpndfrR")) != -1) {
1500                 switch (c) {
1501                 case 'v':
1502                         cb.cb_verbose = B_TRUE;
1503                         break;
1504                 case 'p':
1505                         cb.cb_verbose = B_TRUE;
1506                         cb.cb_parsable = B_TRUE;
1507                         break;
1508                 case 'n':
1509                         cb.cb_dryrun = B_TRUE;
1510                         break;
1511                 case 'd':
1512                         cb.cb_defer_destroy = B_TRUE;
1513                         type = ZFS_TYPE_SNAPSHOT;
1514                         break;
1515                 case 'f':
1516                         cb.cb_force = B_TRUE;
1517                         break;
1518                 case 'r':
1519                         cb.cb_recurse = B_TRUE;
1520                         break;
1521                 case 'R':
1522                         cb.cb_recurse = B_TRUE;
1523                         cb.cb_doclones = B_TRUE;
1524                         break;
1525                 case '?':
1526                 default:
1527                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1528                             optopt);
1529                         usage(B_FALSE);
1530                 }
1531         }
1532
1533         argc -= optind;
1534         argv += optind;
1535
1536         /* check number of arguments */
1537         if (argc == 0) {
1538                 (void) fprintf(stderr, gettext("missing dataset argument\n"));
1539                 usage(B_FALSE);
1540         }
1541         if (argc > 1) {
1542                 (void) fprintf(stderr, gettext("too many arguments\n"));
1543                 usage(B_FALSE);
1544         }
1545
1546         at = strchr(argv[0], '@');
1547         pound = strchr(argv[0], '#');
1548         if (at != NULL) {
1549
1550                 /* Build the list of snaps to destroy in cb_nvl. */
1551                 cb.cb_nvl = fnvlist_alloc();
1552
1553                 *at = '\0';
1554                 zhp = zfs_open(g_zfs, argv[0],
1555                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
1556                 if (zhp == NULL) {
1557                         nvlist_free(cb.cb_nvl);
1558                         return (1);
1559                 }
1560
1561                 cb.cb_snapspec = at + 1;
1562                 if (gather_snapshots(zfs_handle_dup(zhp), &cb) != 0 ||
1563                     cb.cb_error) {
1564                         rv = 1;
1565                         goto out;
1566                 }
1567
1568                 if (nvlist_empty(cb.cb_nvl)) {
1569                         (void) fprintf(stderr, gettext("could not find any "
1570                             "snapshots to destroy; check snapshot names.\n"));
1571                         rv = 1;
1572                         goto out;
1573                 }
1574
1575                 if (cb.cb_verbose) {
1576                         char buf[16];
1577                         zfs_nicebytes(cb.cb_snapused, buf, sizeof (buf));
1578                         if (cb.cb_parsable) {
1579                                 (void) printf("reclaim\t%llu\n",
1580                                     (u_longlong_t)cb.cb_snapused);
1581                         } else if (cb.cb_dryrun) {
1582                                 (void) printf(gettext("would reclaim %s\n"),
1583                                     buf);
1584                         } else {
1585                                 (void) printf(gettext("will reclaim %s\n"),
1586                                     buf);
1587                         }
1588                 }
1589
1590                 if (!cb.cb_dryrun) {
1591                         if (cb.cb_doclones) {
1592                                 cb.cb_batchedsnaps = fnvlist_alloc();
1593                                 err = destroy_clones(&cb);
1594                                 if (err == 0) {
1595                                         err = zfs_destroy_snaps_nvl(g_zfs,
1596                                             cb.cb_batchedsnaps, B_FALSE);
1597                                 }
1598                                 if (err != 0) {
1599                                         rv = 1;
1600                                         goto out;
1601                                 }
1602                         }
1603                         if (err == 0) {
1604                                 err = zfs_destroy_snaps_nvl(g_zfs, cb.cb_nvl,
1605                                     cb.cb_defer_destroy);
1606                         }
1607                 }
1608
1609                 if (err != 0)
1610                         rv = 1;
1611         } else if (pound != NULL) {
1612                 int err;
1613                 nvlist_t *nvl;
1614
1615                 if (cb.cb_dryrun) {
1616                         (void) fprintf(stderr,
1617                             "dryrun is not supported with bookmark\n");
1618                         return (-1);
1619                 }
1620
1621                 if (cb.cb_defer_destroy) {
1622                         (void) fprintf(stderr,
1623                             "defer destroy is not supported with bookmark\n");
1624                         return (-1);
1625                 }
1626
1627                 if (cb.cb_recurse) {
1628                         (void) fprintf(stderr,
1629                             "recursive is not supported with bookmark\n");
1630                         return (-1);
1631                 }
1632
1633                 /*
1634                  * Unfortunately, zfs_bookmark() doesn't honor the
1635                  * casesensitivity setting.  However, we can't simply
1636                  * remove this check, because lzc_destroy_bookmarks()
1637                  * ignores non-existent bookmarks, so this is necessary
1638                  * to get a proper error message.
1639                  */
1640                 if (!zfs_bookmark_exists(argv[0])) {
1641                         (void) fprintf(stderr, gettext("bookmark '%s' "
1642                             "does not exist.\n"), argv[0]);
1643                         return (1);
1644                 }
1645
1646                 nvl = fnvlist_alloc();
1647                 fnvlist_add_boolean(nvl, argv[0]);
1648
1649                 err = lzc_destroy_bookmarks(nvl, NULL);
1650                 if (err != 0) {
1651                         (void) zfs_standard_error(g_zfs, err,
1652                             "cannot destroy bookmark");
1653                 }
1654
1655                 nvlist_free(nvl);
1656
1657                 return (err);
1658         } else {
1659                 /* Open the given dataset */
1660                 if ((zhp = zfs_open(g_zfs, argv[0], type)) == NULL)
1661                         return (1);
1662
1663                 cb.cb_target = zhp;
1664
1665                 /*
1666                  * Perform an explicit check for pools before going any further.
1667                  */
1668                 if (!cb.cb_recurse && strchr(zfs_get_name(zhp), '/') == NULL &&
1669                     zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
1670                         (void) fprintf(stderr, gettext("cannot destroy '%s': "
1671                             "operation does not apply to pools\n"),
1672                             zfs_get_name(zhp));
1673                         (void) fprintf(stderr, gettext("use 'zfs destroy -r "
1674                             "%s' to destroy all datasets in the pool\n"),
1675                             zfs_get_name(zhp));
1676                         (void) fprintf(stderr, gettext("use 'zpool destroy %s' "
1677                             "to destroy the pool itself\n"), zfs_get_name(zhp));
1678                         rv = 1;
1679                         goto out;
1680                 }
1681
1682                 /*
1683                  * Check for any dependents and/or clones.
1684                  */
1685                 cb.cb_first = B_TRUE;
1686                 if (!cb.cb_doclones &&
1687                     zfs_iter_dependents(zhp, B_TRUE, destroy_check_dependent,
1688                     &cb) != 0) {
1689                         rv = 1;
1690                         goto out;
1691                 }
1692
1693                 if (cb.cb_error) {
1694                         rv = 1;
1695                         goto out;
1696                 }
1697                 cb.cb_batchedsnaps = fnvlist_alloc();
1698                 if (zfs_iter_dependents(zhp, B_FALSE, destroy_callback,
1699                     &cb) != 0) {
1700                         rv = 1;
1701                         goto out;
1702                 }
1703
1704                 /*
1705                  * Do the real thing.  The callback will close the
1706                  * handle regardless of whether it succeeds or not.
1707                  */
1708                 err = destroy_callback(zhp, &cb);
1709                 zhp = NULL;
1710                 if (err == 0) {
1711                         err = zfs_destroy_snaps_nvl(g_zfs,
1712                             cb.cb_batchedsnaps, cb.cb_defer_destroy);
1713                 }
1714                 if (err != 0 || cb.cb_error == B_TRUE)
1715                         rv = 1;
1716         }
1717
1718 out:
1719         fnvlist_free(cb.cb_batchedsnaps);
1720         fnvlist_free(cb.cb_nvl);
1721         if (zhp != NULL)
1722                 zfs_close(zhp);
1723         return (rv);
1724 }
1725
1726 static boolean_t
1727 is_recvd_column(zprop_get_cbdata_t *cbp)
1728 {
1729         int i;
1730         zfs_get_column_t col;
1731
1732         for (i = 0; i < ZFS_GET_NCOLS &&
1733             (col = cbp->cb_columns[i]) != GET_COL_NONE; i++)
1734                 if (col == GET_COL_RECVD)
1735                         return (B_TRUE);
1736         return (B_FALSE);
1737 }
1738
1739 /*
1740  * zfs get [-rHp] [-o all | field[,field]...] [-s source[,source]...]
1741  *      < all | property[,property]... > < fs | snap | vol > ...
1742  *
1743  *      -r      recurse over any child datasets
1744  *      -H      scripted mode.  Headers are stripped, and fields are separated
1745  *              by tabs instead of spaces.
1746  *      -o      Set of fields to display.  One of "name,property,value,
1747  *              received,source". Default is "name,property,value,source".
1748  *              "all" is an alias for all five.
1749  *      -s      Set of sources to allow.  One of
1750  *              "local,default,inherited,received,temporary,none".  Default is
1751  *              all six.
1752  *      -p      Display values in parsable (literal) format.
1753  *
1754  *  Prints properties for the given datasets.  The user can control which
1755  *  columns to display as well as which property types to allow.
1756  */
1757
1758 /*
1759  * Invoked to display the properties for a single dataset.
1760  */
1761 static int
1762 get_callback(zfs_handle_t *zhp, void *data)
1763 {
1764         char buf[ZFS_MAXPROPLEN];
1765         char rbuf[ZFS_MAXPROPLEN];
1766         zprop_source_t sourcetype;
1767         char source[ZFS_MAX_DATASET_NAME_LEN];
1768         zprop_get_cbdata_t *cbp = data;
1769         nvlist_t *user_props = zfs_get_user_props(zhp);
1770         zprop_list_t *pl = cbp->cb_proplist;
1771         nvlist_t *propval;
1772         char *strval;
1773         char *sourceval;
1774         boolean_t received = is_recvd_column(cbp);
1775
1776         for (; pl != NULL; pl = pl->pl_next) {
1777                 char *recvdval = NULL;
1778                 /*
1779                  * Skip the special fake placeholder.  This will also skip over
1780                  * the name property when 'all' is specified.
1781                  */
1782                 if (pl->pl_prop == ZFS_PROP_NAME &&
1783                     pl == cbp->cb_proplist)
1784                         continue;
1785
1786                 if (pl->pl_prop != ZPROP_INVAL) {
1787                         if (zfs_prop_get(zhp, pl->pl_prop, buf,
1788                             sizeof (buf), &sourcetype, source,
1789                             sizeof (source),
1790                             cbp->cb_literal) != 0) {
1791                                 if (pl->pl_all)
1792                                         continue;
1793                                 if (!zfs_prop_valid_for_type(pl->pl_prop,
1794                                     ZFS_TYPE_DATASET, B_FALSE)) {
1795                                         (void) fprintf(stderr,
1796                                             gettext("No such property '%s'\n"),
1797                                             zfs_prop_to_name(pl->pl_prop));
1798                                         continue;
1799                                 }
1800                                 sourcetype = ZPROP_SRC_NONE;
1801                                 (void) strlcpy(buf, "-", sizeof (buf));
1802                         }
1803
1804                         if (received && (zfs_prop_get_recvd(zhp,
1805                             zfs_prop_to_name(pl->pl_prop), rbuf, sizeof (rbuf),
1806                             cbp->cb_literal) == 0))
1807                                 recvdval = rbuf;
1808
1809                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1810                             zfs_prop_to_name(pl->pl_prop),
1811                             buf, sourcetype, source, recvdval);
1812                 } else if (zfs_prop_userquota(pl->pl_user_prop)) {
1813                         sourcetype = ZPROP_SRC_LOCAL;
1814
1815                         if (zfs_prop_get_userquota(zhp, pl->pl_user_prop,
1816                             buf, sizeof (buf), cbp->cb_literal) != 0) {
1817                                 sourcetype = ZPROP_SRC_NONE;
1818                                 (void) strlcpy(buf, "-", sizeof (buf));
1819                         }
1820
1821                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1822                             pl->pl_user_prop, buf, sourcetype, source, NULL);
1823                 } else if (zfs_prop_written(pl->pl_user_prop)) {
1824                         sourcetype = ZPROP_SRC_LOCAL;
1825
1826                         if (zfs_prop_get_written(zhp, pl->pl_user_prop,
1827                             buf, sizeof (buf), cbp->cb_literal) != 0) {
1828                                 sourcetype = ZPROP_SRC_NONE;
1829                                 (void) strlcpy(buf, "-", sizeof (buf));
1830                         }
1831
1832                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1833                             pl->pl_user_prop, buf, sourcetype, source, NULL);
1834                 } else {
1835                         if (nvlist_lookup_nvlist(user_props,
1836                             pl->pl_user_prop, &propval) != 0) {
1837                                 if (pl->pl_all)
1838                                         continue;
1839                                 sourcetype = ZPROP_SRC_NONE;
1840                                 strval = "-";
1841                         } else {
1842                                 verify(nvlist_lookup_string(propval,
1843                                     ZPROP_VALUE, &strval) == 0);
1844                                 verify(nvlist_lookup_string(propval,
1845                                     ZPROP_SOURCE, &sourceval) == 0);
1846
1847                                 if (strcmp(sourceval,
1848                                     zfs_get_name(zhp)) == 0) {
1849                                         sourcetype = ZPROP_SRC_LOCAL;
1850                                 } else if (strcmp(sourceval,
1851                                     ZPROP_SOURCE_VAL_RECVD) == 0) {
1852                                         sourcetype = ZPROP_SRC_RECEIVED;
1853                                 } else {
1854                                         sourcetype = ZPROP_SRC_INHERITED;
1855                                         (void) strlcpy(source,
1856                                             sourceval, sizeof (source));
1857                                 }
1858                         }
1859
1860                         if (received && (zfs_prop_get_recvd(zhp,
1861                             pl->pl_user_prop, rbuf, sizeof (rbuf),
1862                             cbp->cb_literal) == 0))
1863                                 recvdval = rbuf;
1864
1865                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1866                             pl->pl_user_prop, strval, sourcetype,
1867                             source, recvdval);
1868                 }
1869         }
1870
1871         return (0);
1872 }
1873
1874 static int
1875 zfs_do_get(int argc, char **argv)
1876 {
1877         zprop_get_cbdata_t cb = { 0 };
1878         int i, c, flags = ZFS_ITER_ARGS_CAN_BE_PATHS;
1879         int types = ZFS_TYPE_DATASET | ZFS_TYPE_BOOKMARK;
1880         char *value, *fields;
1881         int ret = 0;
1882         int limit = 0;
1883         zprop_list_t fake_name = { 0 };
1884
1885         /*
1886          * Set up default columns and sources.
1887          */
1888         cb.cb_sources = ZPROP_SRC_ALL;
1889         cb.cb_columns[0] = GET_COL_NAME;
1890         cb.cb_columns[1] = GET_COL_PROPERTY;
1891         cb.cb_columns[2] = GET_COL_VALUE;
1892         cb.cb_columns[3] = GET_COL_SOURCE;
1893         cb.cb_type = ZFS_TYPE_DATASET;
1894
1895         /* check options */
1896         while ((c = getopt(argc, argv, ":d:o:s:rt:Hp")) != -1) {
1897                 switch (c) {
1898                 case 'p':
1899                         cb.cb_literal = B_TRUE;
1900                         break;
1901                 case 'd':
1902                         limit = parse_depth(optarg, &flags);
1903                         break;
1904                 case 'r':
1905                         flags |= ZFS_ITER_RECURSE;
1906                         break;
1907                 case 'H':
1908                         cb.cb_scripted = B_TRUE;
1909                         break;
1910                 case ':':
1911                         (void) fprintf(stderr, gettext("missing argument for "
1912                             "'%c' option\n"), optopt);
1913                         usage(B_FALSE);
1914                         break;
1915                 case 'o':
1916                         /*
1917                          * Process the set of columns to display.  We zero out
1918                          * the structure to give us a blank slate.
1919                          */
1920                         bzero(&cb.cb_columns, sizeof (cb.cb_columns));
1921                         i = 0;
1922                         while (*optarg != '\0') {
1923                                 static char *col_subopts[] =
1924                                     { "name", "property", "value", "received",
1925                                     "source", "all", NULL };
1926
1927                                 if (i == ZFS_GET_NCOLS) {
1928                                         (void) fprintf(stderr, gettext("too "
1929                                             "many fields given to -o "
1930                                             "option\n"));
1931                                         usage(B_FALSE);
1932                                 }
1933
1934                                 switch (getsubopt(&optarg, col_subopts,
1935                                     &value)) {
1936                                 case 0:
1937                                         cb.cb_columns[i++] = GET_COL_NAME;
1938                                         break;
1939                                 case 1:
1940                                         cb.cb_columns[i++] = GET_COL_PROPERTY;
1941                                         break;
1942                                 case 2:
1943                                         cb.cb_columns[i++] = GET_COL_VALUE;
1944                                         break;
1945                                 case 3:
1946                                         cb.cb_columns[i++] = GET_COL_RECVD;
1947                                         flags |= ZFS_ITER_RECVD_PROPS;
1948                                         break;
1949                                 case 4:
1950                                         cb.cb_columns[i++] = GET_COL_SOURCE;
1951                                         break;
1952                                 case 5:
1953                                         if (i > 0) {
1954                                                 (void) fprintf(stderr,
1955                                                     gettext("\"all\" conflicts "
1956                                                     "with specific fields "
1957                                                     "given to -o option\n"));
1958                                                 usage(B_FALSE);
1959                                         }
1960                                         cb.cb_columns[0] = GET_COL_NAME;
1961                                         cb.cb_columns[1] = GET_COL_PROPERTY;
1962                                         cb.cb_columns[2] = GET_COL_VALUE;
1963                                         cb.cb_columns[3] = GET_COL_RECVD;
1964                                         cb.cb_columns[4] = GET_COL_SOURCE;
1965                                         flags |= ZFS_ITER_RECVD_PROPS;
1966                                         i = ZFS_GET_NCOLS;
1967                                         break;
1968                                 default:
1969                                         (void) fprintf(stderr,
1970                                             gettext("invalid column name "
1971                                             "'%s'\n"), value);
1972                                         usage(B_FALSE);
1973                                 }
1974                         }
1975                         break;
1976
1977                 case 's':
1978                         cb.cb_sources = 0;
1979                         while (*optarg != '\0') {
1980                                 static char *source_subopts[] = {
1981                                         "local", "default", "inherited",
1982                                         "received", "temporary", "none",
1983                                         NULL };
1984
1985                                 switch (getsubopt(&optarg, source_subopts,
1986                                     &value)) {
1987                                 case 0:
1988                                         cb.cb_sources |= ZPROP_SRC_LOCAL;
1989                                         break;
1990                                 case 1:
1991                                         cb.cb_sources |= ZPROP_SRC_DEFAULT;
1992                                         break;
1993                                 case 2:
1994                                         cb.cb_sources |= ZPROP_SRC_INHERITED;
1995                                         break;
1996                                 case 3:
1997                                         cb.cb_sources |= ZPROP_SRC_RECEIVED;
1998                                         break;
1999                                 case 4:
2000                                         cb.cb_sources |= ZPROP_SRC_TEMPORARY;
2001                                         break;
2002                                 case 5:
2003                                         cb.cb_sources |= ZPROP_SRC_NONE;
2004                                         break;
2005                                 default:
2006                                         (void) fprintf(stderr,
2007                                             gettext("invalid source "
2008                                             "'%s'\n"), value);
2009                                         usage(B_FALSE);
2010                                 }
2011                         }
2012                         break;
2013
2014                 case 't':
2015                         types = 0;
2016                         flags &= ~ZFS_ITER_PROP_LISTSNAPS;
2017                         while (*optarg != '\0') {
2018                                 static char *type_subopts[] = { "filesystem",
2019                                     "volume", "snapshot", "snap", "bookmark",
2020                                     "all", NULL };
2021
2022                                 switch (getsubopt(&optarg, type_subopts,
2023                                     &value)) {
2024                                 case 0:
2025                                         types |= ZFS_TYPE_FILESYSTEM;
2026                                         break;
2027                                 case 1:
2028                                         types |= ZFS_TYPE_VOLUME;
2029                                         break;
2030                                 case 2:
2031                                 case 3:
2032                                         types |= ZFS_TYPE_SNAPSHOT;
2033                                         break;
2034                                 case 4:
2035                                         types |= ZFS_TYPE_BOOKMARK;
2036                                         break;
2037                                 case 5:
2038                                         types = ZFS_TYPE_DATASET |
2039                                             ZFS_TYPE_BOOKMARK;
2040                                         break;
2041
2042                                 default:
2043                                         (void) fprintf(stderr,
2044                                             gettext("invalid type '%s'\n"),
2045                                             value);
2046                                         usage(B_FALSE);
2047                                 }
2048                         }
2049                         break;
2050
2051                 case '?':
2052                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2053                             optopt);
2054                         usage(B_FALSE);
2055                 }
2056         }
2057
2058         argc -= optind;
2059         argv += optind;
2060
2061         if (argc < 1) {
2062                 (void) fprintf(stderr, gettext("missing property "
2063                     "argument\n"));
2064                 usage(B_FALSE);
2065         }
2066
2067         fields = argv[0];
2068
2069         /*
2070          * Handle users who want to get all snapshots or bookmarks
2071          * of a dataset (ex. 'zfs get -t snapshot refer <dataset>').
2072          */
2073         if ((types == ZFS_TYPE_SNAPSHOT || types == ZFS_TYPE_BOOKMARK) &&
2074             argc > 1 && (flags & ZFS_ITER_RECURSE) == 0 && limit == 0) {
2075                 flags |= (ZFS_ITER_DEPTH_LIMIT | ZFS_ITER_RECURSE);
2076                 limit = 1;
2077         }
2078
2079         if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
2080             != 0)
2081                 usage(B_FALSE);
2082
2083         argc--;
2084         argv++;
2085
2086         /*
2087          * As part of zfs_expand_proplist(), we keep track of the maximum column
2088          * width for each property.  For the 'NAME' (and 'SOURCE') columns, we
2089          * need to know the maximum name length.  However, the user likely did
2090          * not specify 'name' as one of the properties to fetch, so we need to
2091          * make sure we always include at least this property for
2092          * print_get_headers() to work properly.
2093          */
2094         if (cb.cb_proplist != NULL) {
2095                 fake_name.pl_prop = ZFS_PROP_NAME;
2096                 fake_name.pl_width = strlen(gettext("NAME"));
2097                 fake_name.pl_next = cb.cb_proplist;
2098                 cb.cb_proplist = &fake_name;
2099         }
2100
2101         cb.cb_first = B_TRUE;
2102
2103         /* run for each object */
2104         ret = zfs_for_each(argc, argv, flags, types, NULL,
2105             &cb.cb_proplist, limit, get_callback, &cb);
2106
2107         if (cb.cb_proplist == &fake_name)
2108                 zprop_free_list(fake_name.pl_next);
2109         else
2110                 zprop_free_list(cb.cb_proplist);
2111
2112         return (ret);
2113 }
2114
2115 /*
2116  * inherit [-rS] <property> <fs|vol> ...
2117  *
2118  *      -r      Recurse over all children
2119  *      -S      Revert to received value, if any
2120  *
2121  * For each dataset specified on the command line, inherit the given property
2122  * from its parent.  Inheriting a property at the pool level will cause it to
2123  * use the default value.  The '-r' flag will recurse over all children, and is
2124  * useful for setting a property on a hierarchy-wide basis, regardless of any
2125  * local modifications for each dataset.
2126  */
2127
2128 typedef struct inherit_cbdata {
2129         const char *cb_propname;
2130         boolean_t cb_received;
2131 } inherit_cbdata_t;
2132
2133 static int
2134 inherit_recurse_cb(zfs_handle_t *zhp, void *data)
2135 {
2136         inherit_cbdata_t *cb = data;
2137         zfs_prop_t prop = zfs_name_to_prop(cb->cb_propname);
2138
2139         /*
2140          * If we're doing it recursively, then ignore properties that
2141          * are not valid for this type of dataset.
2142          */
2143         if (prop != ZPROP_INVAL &&
2144             !zfs_prop_valid_for_type(prop, zfs_get_type(zhp), B_FALSE))
2145                 return (0);
2146
2147         return (zfs_prop_inherit(zhp, cb->cb_propname, cb->cb_received) != 0);
2148 }
2149
2150 static int
2151 inherit_cb(zfs_handle_t *zhp, void *data)
2152 {
2153         inherit_cbdata_t *cb = data;
2154
2155         return (zfs_prop_inherit(zhp, cb->cb_propname, cb->cb_received) != 0);
2156 }
2157
2158 static int
2159 zfs_do_inherit(int argc, char **argv)
2160 {
2161         int c;
2162         zfs_prop_t prop;
2163         inherit_cbdata_t cb = { 0 };
2164         char *propname;
2165         int ret = 0;
2166         int flags = 0;
2167         boolean_t received = B_FALSE;
2168
2169         /* check options */
2170         while ((c = getopt(argc, argv, "rS")) != -1) {
2171                 switch (c) {
2172                 case 'r':
2173                         flags |= ZFS_ITER_RECURSE;
2174                         break;
2175                 case 'S':
2176                         received = B_TRUE;
2177                         break;
2178                 case '?':
2179                 default:
2180                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2181                             optopt);
2182                         usage(B_FALSE);
2183                 }
2184         }
2185
2186         argc -= optind;
2187         argv += optind;
2188
2189         /* check number of arguments */
2190         if (argc < 1) {
2191                 (void) fprintf(stderr, gettext("missing property argument\n"));
2192                 usage(B_FALSE);
2193         }
2194         if (argc < 2) {
2195                 (void) fprintf(stderr, gettext("missing dataset argument\n"));
2196                 usage(B_FALSE);
2197         }
2198
2199         propname = argv[0];
2200         argc--;
2201         argv++;
2202
2203         if ((prop = zfs_name_to_prop(propname)) != ZPROP_INVAL) {
2204                 if (zfs_prop_readonly(prop)) {
2205                         (void) fprintf(stderr, gettext(
2206                             "%s property is read-only\n"),
2207                             propname);
2208                         return (1);
2209                 }
2210                 if (!zfs_prop_inheritable(prop) && !received) {
2211                         (void) fprintf(stderr, gettext("'%s' property cannot "
2212                             "be inherited\n"), propname);
2213                         if (prop == ZFS_PROP_QUOTA ||
2214                             prop == ZFS_PROP_RESERVATION ||
2215                             prop == ZFS_PROP_REFQUOTA ||
2216                             prop == ZFS_PROP_REFRESERVATION) {
2217                                 (void) fprintf(stderr, gettext("use 'zfs set "
2218                                     "%s=none' to clear\n"), propname);
2219                                 (void) fprintf(stderr, gettext("use 'zfs "
2220                                     "inherit -S %s' to revert to received "
2221                                     "value\n"), propname);
2222                         }
2223                         return (1);
2224                 }
2225                 if (received && (prop == ZFS_PROP_VOLSIZE ||
2226                     prop == ZFS_PROP_VERSION)) {
2227                         (void) fprintf(stderr, gettext("'%s' property cannot "
2228                             "be reverted to a received value\n"), propname);
2229                         return (1);
2230                 }
2231         } else if (!zfs_prop_user(propname)) {
2232                 (void) fprintf(stderr, gettext("invalid property '%s'\n"),
2233                     propname);
2234                 usage(B_FALSE);
2235         }
2236
2237         cb.cb_propname = propname;
2238         cb.cb_received = received;
2239
2240         if (flags & ZFS_ITER_RECURSE) {
2241                 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
2242                     NULL, NULL, 0, inherit_recurse_cb, &cb);
2243         } else {
2244                 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
2245                     NULL, NULL, 0, inherit_cb, &cb);
2246         }
2247
2248         return (ret);
2249 }
2250
2251 typedef struct upgrade_cbdata {
2252         uint64_t cb_numupgraded;
2253         uint64_t cb_numsamegraded;
2254         uint64_t cb_numfailed;
2255         uint64_t cb_version;
2256         boolean_t cb_newer;
2257         boolean_t cb_foundone;
2258         char cb_lastfs[ZFS_MAX_DATASET_NAME_LEN];
2259 } upgrade_cbdata_t;
2260
2261 static int
2262 same_pool(zfs_handle_t *zhp, const char *name)
2263 {
2264         int len1 = strcspn(name, "/@");
2265         const char *zhname = zfs_get_name(zhp);
2266         int len2 = strcspn(zhname, "/@");
2267
2268         if (len1 != len2)
2269                 return (B_FALSE);
2270         return (strncmp(name, zhname, len1) == 0);
2271 }
2272
2273 static int
2274 upgrade_list_callback(zfs_handle_t *zhp, void *data)
2275 {
2276         upgrade_cbdata_t *cb = data;
2277         int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
2278
2279         /* list if it's old/new */
2280         if ((!cb->cb_newer && version < ZPL_VERSION) ||
2281             (cb->cb_newer && version > ZPL_VERSION)) {
2282                 char *str;
2283                 if (cb->cb_newer) {
2284                         str = gettext("The following filesystems are "
2285                             "formatted using a newer software version and\n"
2286                             "cannot be accessed on the current system.\n\n");
2287                 } else {
2288                         str = gettext("The following filesystems are "
2289                             "out of date, and can be upgraded.  After being\n"
2290                             "upgraded, these filesystems (and any 'zfs send' "
2291                             "streams generated from\n"
2292                             "subsequent snapshots) will no longer be "
2293                             "accessible by older software versions.\n\n");
2294                 }
2295
2296                 if (!cb->cb_foundone) {
2297                         (void) puts(str);
2298                         (void) printf(gettext("VER  FILESYSTEM\n"));
2299                         (void) printf(gettext("---  ------------\n"));
2300                         cb->cb_foundone = B_TRUE;
2301                 }
2302
2303                 (void) printf("%2u   %s\n", version, zfs_get_name(zhp));
2304         }
2305
2306         return (0);
2307 }
2308
2309 static int
2310 upgrade_set_callback(zfs_handle_t *zhp, void *data)
2311 {
2312         upgrade_cbdata_t *cb = data;
2313         int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
2314         int needed_spa_version;
2315         int spa_version;
2316
2317         if (zfs_spa_version(zhp, &spa_version) < 0)
2318                 return (-1);
2319
2320         needed_spa_version = zfs_spa_version_map(cb->cb_version);
2321
2322         if (needed_spa_version < 0)
2323                 return (-1);
2324
2325         if (spa_version < needed_spa_version) {
2326                 /* can't upgrade */
2327                 (void) printf(gettext("%s: can not be "
2328                     "upgraded; the pool version needs to first "
2329                     "be upgraded\nto version %d\n\n"),
2330                     zfs_get_name(zhp), needed_spa_version);
2331                 cb->cb_numfailed++;
2332                 return (0);
2333         }
2334
2335         /* upgrade */
2336         if (version < cb->cb_version) {
2337                 char verstr[16];
2338                 (void) snprintf(verstr, sizeof (verstr),
2339                     "%llu", (u_longlong_t)cb->cb_version);
2340                 if (cb->cb_lastfs[0] && !same_pool(zhp, cb->cb_lastfs)) {
2341                         /*
2342                          * If they did "zfs upgrade -a", then we could
2343                          * be doing ioctls to different pools.  We need
2344                          * to log this history once to each pool, and bypass
2345                          * the normal history logging that happens in main().
2346                          */
2347                         (void) zpool_log_history(g_zfs, history_str);
2348                         log_history = B_FALSE;
2349                 }
2350                 if (zfs_prop_set(zhp, "version", verstr) == 0)
2351                         cb->cb_numupgraded++;
2352                 else
2353                         cb->cb_numfailed++;
2354                 (void) strcpy(cb->cb_lastfs, zfs_get_name(zhp));
2355         } else if (version > cb->cb_version) {
2356                 /* can't downgrade */
2357                 (void) printf(gettext("%s: can not be downgraded; "
2358                     "it is already at version %u\n"),
2359                     zfs_get_name(zhp), version);
2360                 cb->cb_numfailed++;
2361         } else {
2362                 cb->cb_numsamegraded++;
2363         }
2364         return (0);
2365 }
2366
2367 /*
2368  * zfs upgrade
2369  * zfs upgrade -v
2370  * zfs upgrade [-r] [-V <version>] <-a | filesystem>
2371  */
2372 static int
2373 zfs_do_upgrade(int argc, char **argv)
2374 {
2375         boolean_t all = B_FALSE;
2376         boolean_t showversions = B_FALSE;
2377         int ret = 0;
2378         upgrade_cbdata_t cb = { 0 };
2379         int c;
2380         int flags = ZFS_ITER_ARGS_CAN_BE_PATHS;
2381
2382         /* check options */
2383         while ((c = getopt(argc, argv, "rvV:a")) != -1) {
2384                 switch (c) {
2385                 case 'r':
2386                         flags |= ZFS_ITER_RECURSE;
2387                         break;
2388                 case 'v':
2389                         showversions = B_TRUE;
2390                         break;
2391                 case 'V':
2392                         if (zfs_prop_string_to_index(ZFS_PROP_VERSION,
2393                             optarg, &cb.cb_version) != 0) {
2394                                 (void) fprintf(stderr,
2395                                     gettext("invalid version %s\n"), optarg);
2396                                 usage(B_FALSE);
2397                         }
2398                         break;
2399                 case 'a':
2400                         all = B_TRUE;
2401                         break;
2402                 case '?':
2403                 default:
2404                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2405                             optopt);
2406                         usage(B_FALSE);
2407                 }
2408         }
2409
2410         argc -= optind;
2411         argv += optind;
2412
2413         if ((!all && !argc) && ((flags & ZFS_ITER_RECURSE) | cb.cb_version))
2414                 usage(B_FALSE);
2415         if (showversions && (flags & ZFS_ITER_RECURSE || all ||
2416             cb.cb_version || argc))
2417                 usage(B_FALSE);
2418         if ((all || argc) && (showversions))
2419                 usage(B_FALSE);
2420         if (all && argc)
2421                 usage(B_FALSE);
2422
2423         if (showversions) {
2424                 /* Show info on available versions. */
2425                 (void) printf(gettext("The following filesystem versions are "
2426                     "supported:\n\n"));
2427                 (void) printf(gettext("VER  DESCRIPTION\n"));
2428                 (void) printf("---  -----------------------------------------"
2429                     "---------------\n");
2430                 (void) printf(gettext(" 1   Initial ZFS filesystem version\n"));
2431                 (void) printf(gettext(" 2   Enhanced directory entries\n"));
2432                 (void) printf(gettext(" 3   Case insensitive and filesystem "
2433                     "user identifier (FUID)\n"));
2434                 (void) printf(gettext(" 4   userquota, groupquota "
2435                     "properties\n"));
2436                 (void) printf(gettext(" 5   System attributes\n"));
2437                 (void) printf(gettext("\nFor more information on a particular "
2438                     "version, including supported releases,\n"));
2439                 (void) printf("see the ZFS Administration Guide.\n\n");
2440                 ret = 0;
2441         } else if (argc || all) {
2442                 /* Upgrade filesystems */
2443                 if (cb.cb_version == 0)
2444                         cb.cb_version = ZPL_VERSION;
2445                 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_FILESYSTEM,
2446                     NULL, NULL, 0, upgrade_set_callback, &cb);
2447                 (void) printf(gettext("%llu filesystems upgraded\n"),
2448                     (u_longlong_t)cb.cb_numupgraded);
2449                 if (cb.cb_numsamegraded) {
2450                         (void) printf(gettext("%llu filesystems already at "
2451                             "this version\n"),
2452                             (u_longlong_t)cb.cb_numsamegraded);
2453                 }
2454                 if (cb.cb_numfailed != 0)
2455                         ret = 1;
2456         } else {
2457                 /* List old-version filesystems */
2458                 boolean_t found;
2459                 (void) printf(gettext("This system is currently running "
2460                     "ZFS filesystem version %llu.\n\n"), ZPL_VERSION);
2461
2462                 flags |= ZFS_ITER_RECURSE;
2463                 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
2464                     NULL, NULL, 0, upgrade_list_callback, &cb);
2465
2466                 found = cb.cb_foundone;
2467                 cb.cb_foundone = B_FALSE;
2468                 cb.cb_newer = B_TRUE;
2469
2470                 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
2471                     NULL, NULL, 0, upgrade_list_callback, &cb);
2472
2473                 if (!cb.cb_foundone && !found) {
2474                         (void) printf(gettext("All filesystems are "
2475                             "formatted with the current version.\n"));
2476                 }
2477         }
2478
2479         return (ret);
2480 }
2481
2482 /*
2483  * zfs userspace [-Hinp] [-o field[,...]] [-s field [-s field]...]
2484  *               [-S field [-S field]...] [-t type[,...]]
2485  *               filesystem | snapshot | path
2486  * zfs groupspace [-Hinp] [-o field[,...]] [-s field [-s field]...]
2487  *                [-S field [-S field]...] [-t type[,...]]
2488  *                filesystem | snapshot | path
2489  * zfs projectspace [-Hp] [-o field[,...]] [-s field [-s field]...]
2490  *                [-S field [-S field]...] filesystem | snapshot | path
2491  *
2492  *      -H      Scripted mode; elide headers and separate columns by tabs.
2493  *      -i      Translate SID to POSIX ID.
2494  *      -n      Print numeric ID instead of user/group name.
2495  *      -o      Control which fields to display.
2496  *      -p      Use exact (parsable) numeric output.
2497  *      -s      Specify sort columns, descending order.
2498  *      -S      Specify sort columns, ascending order.
2499  *      -t      Control which object types to display.
2500  *
2501  *      Displays space consumed by, and quotas on, each user in the specified
2502  *      filesystem or snapshot.
2503  */
2504
2505 /* us_field_types, us_field_hdr and us_field_names should be kept in sync */
2506 enum us_field_types {
2507         USFIELD_TYPE,
2508         USFIELD_NAME,
2509         USFIELD_USED,
2510         USFIELD_QUOTA,
2511         USFIELD_OBJUSED,
2512         USFIELD_OBJQUOTA
2513 };
2514 static char *us_field_hdr[] = { "TYPE", "NAME", "USED", "QUOTA",
2515                                     "OBJUSED", "OBJQUOTA" };
2516 static char *us_field_names[] = { "type", "name", "used", "quota",
2517                                     "objused", "objquota" };
2518 #define USFIELD_LAST    (sizeof (us_field_names) / sizeof (char *))
2519
2520 #define USTYPE_PSX_GRP  (1 << 0)
2521 #define USTYPE_PSX_USR  (1 << 1)
2522 #define USTYPE_SMB_GRP  (1 << 2)
2523 #define USTYPE_SMB_USR  (1 << 3)
2524 #define USTYPE_PROJ     (1 << 4)
2525 #define USTYPE_ALL      \
2526         (USTYPE_PSX_GRP | USTYPE_PSX_USR | USTYPE_SMB_GRP | USTYPE_SMB_USR | \
2527             USTYPE_PROJ)
2528
2529 static int us_type_bits[] = {
2530         USTYPE_PSX_GRP,
2531         USTYPE_PSX_USR,
2532         USTYPE_SMB_GRP,
2533         USTYPE_SMB_USR,
2534         USTYPE_ALL
2535 };
2536 static char *us_type_names[] = { "posixgroup", "posixuser", "smbgroup",
2537         "smbuser", "all" };
2538
2539 typedef struct us_node {
2540         nvlist_t        *usn_nvl;
2541         uu_avl_node_t   usn_avlnode;
2542         uu_list_node_t  usn_listnode;
2543 } us_node_t;
2544
2545 typedef struct us_cbdata {
2546         nvlist_t        **cb_nvlp;
2547         uu_avl_pool_t   *cb_avl_pool;
2548         uu_avl_t        *cb_avl;
2549         boolean_t       cb_numname;
2550         boolean_t       cb_nicenum;
2551         boolean_t       cb_sid2posix;
2552         zfs_userquota_prop_t cb_prop;
2553         zfs_sort_column_t *cb_sortcol;
2554         size_t          cb_width[USFIELD_LAST];
2555 } us_cbdata_t;
2556
2557 static boolean_t us_populated = B_FALSE;
2558
2559 typedef struct {
2560         zfs_sort_column_t *si_sortcol;
2561         boolean_t       si_numname;
2562 } us_sort_info_t;
2563
2564 static int
2565 us_field_index(char *field)
2566 {
2567         int i;
2568
2569         for (i = 0; i < USFIELD_LAST; i++) {
2570                 if (strcmp(field, us_field_names[i]) == 0)
2571                         return (i);
2572         }
2573
2574         return (-1);
2575 }
2576
2577 static int
2578 us_compare(const void *larg, const void *rarg, void *unused)
2579 {
2580         const us_node_t *l = larg;
2581         const us_node_t *r = rarg;
2582         us_sort_info_t *si = (us_sort_info_t *)unused;
2583         zfs_sort_column_t *sortcol = si->si_sortcol;
2584         boolean_t numname = si->si_numname;
2585         nvlist_t *lnvl = l->usn_nvl;
2586         nvlist_t *rnvl = r->usn_nvl;
2587         int rc = 0;
2588         boolean_t lvb, rvb;
2589
2590         for (; sortcol != NULL; sortcol = sortcol->sc_next) {
2591                 char *lvstr = "";
2592                 char *rvstr = "";
2593                 uint32_t lv32 = 0;
2594                 uint32_t rv32 = 0;
2595                 uint64_t lv64 = 0;
2596                 uint64_t rv64 = 0;
2597                 zfs_prop_t prop = sortcol->sc_prop;
2598                 const char *propname = NULL;
2599                 boolean_t reverse = sortcol->sc_reverse;
2600
2601                 switch (prop) {
2602                 case ZFS_PROP_TYPE:
2603                         propname = "type";
2604                         (void) nvlist_lookup_uint32(lnvl, propname, &lv32);
2605                         (void) nvlist_lookup_uint32(rnvl, propname, &rv32);
2606                         if (rv32 != lv32)
2607                                 rc = (rv32 < lv32) ? 1 : -1;
2608                         break;
2609                 case ZFS_PROP_NAME:
2610                         propname = "name";
2611                         if (numname) {
2612 compare_nums:
2613                                 (void) nvlist_lookup_uint64(lnvl, propname,
2614                                     &lv64);
2615                                 (void) nvlist_lookup_uint64(rnvl, propname,
2616                                     &rv64);
2617                                 if (rv64 != lv64)
2618                                         rc = (rv64 < lv64) ? 1 : -1;
2619                         } else {
2620                                 if ((nvlist_lookup_string(lnvl, propname,
2621                                     &lvstr) == ENOENT) ||
2622                                     (nvlist_lookup_string(rnvl, propname,
2623                                     &rvstr) == ENOENT)) {
2624                                         goto compare_nums;
2625                                 }
2626                                 rc = strcmp(lvstr, rvstr);
2627                         }
2628                         break;
2629                 case ZFS_PROP_USED:
2630                 case ZFS_PROP_QUOTA:
2631                         if (!us_populated)
2632                                 break;
2633                         if (prop == ZFS_PROP_USED)
2634                                 propname = "used";
2635                         else
2636                                 propname = "quota";
2637                         (void) nvlist_lookup_uint64(lnvl, propname, &lv64);
2638                         (void) nvlist_lookup_uint64(rnvl, propname, &rv64);
2639                         if (rv64 != lv64)
2640                                 rc = (rv64 < lv64) ? 1 : -1;
2641                         break;
2642
2643                 default:
2644                         break;
2645                 }
2646
2647                 if (rc != 0) {
2648                         if (rc < 0)
2649                                 return (reverse ? 1 : -1);
2650                         else
2651                                 return (reverse ? -1 : 1);
2652                 }
2653         }
2654
2655         /*
2656          * If entries still seem to be the same, check if they are of the same
2657          * type (smbentity is added only if we are doing SID to POSIX ID
2658          * translation where we can have duplicate type/name combinations).
2659          */
2660         if (nvlist_lookup_boolean_value(lnvl, "smbentity", &lvb) == 0 &&
2661             nvlist_lookup_boolean_value(rnvl, "smbentity", &rvb) == 0 &&
2662             lvb != rvb)
2663                 return (lvb < rvb ? -1 : 1);
2664
2665         return (0);
2666 }
2667
2668 static boolean_t
2669 zfs_prop_is_user(unsigned p)
2670 {
2671         return (p == ZFS_PROP_USERUSED || p == ZFS_PROP_USERQUOTA ||
2672             p == ZFS_PROP_USEROBJUSED || p == ZFS_PROP_USEROBJQUOTA);
2673 }
2674
2675 static boolean_t
2676 zfs_prop_is_group(unsigned p)
2677 {
2678         return (p == ZFS_PROP_GROUPUSED || p == ZFS_PROP_GROUPQUOTA ||
2679             p == ZFS_PROP_GROUPOBJUSED || p == ZFS_PROP_GROUPOBJQUOTA);
2680 }
2681
2682 static boolean_t
2683 zfs_prop_is_project(unsigned p)
2684 {
2685         return (p == ZFS_PROP_PROJECTUSED || p == ZFS_PROP_PROJECTQUOTA ||
2686             p == ZFS_PROP_PROJECTOBJUSED || p == ZFS_PROP_PROJECTOBJQUOTA);
2687 }
2688
2689 static inline const char *
2690 us_type2str(unsigned field_type)
2691 {
2692         switch (field_type) {
2693         case USTYPE_PSX_USR:
2694                 return ("POSIX User");
2695         case USTYPE_PSX_GRP:
2696                 return ("POSIX Group");
2697         case USTYPE_SMB_USR:
2698                 return ("SMB User");
2699         case USTYPE_SMB_GRP:
2700                 return ("SMB Group");
2701         case USTYPE_PROJ:
2702                 return ("Project");
2703         default:
2704                 return ("Undefined");
2705         }
2706 }
2707
2708 static int
2709 userspace_cb(void *arg, const char *domain, uid_t rid, uint64_t space)
2710 {
2711         us_cbdata_t *cb = (us_cbdata_t *)arg;
2712         zfs_userquota_prop_t prop = cb->cb_prop;
2713         char *name = NULL;
2714         char *propname;
2715         char sizebuf[32];
2716         us_node_t *node;
2717         uu_avl_pool_t *avl_pool = cb->cb_avl_pool;
2718         uu_avl_t *avl = cb->cb_avl;
2719         uu_avl_index_t idx;
2720         nvlist_t *props;
2721         us_node_t *n;
2722         zfs_sort_column_t *sortcol = cb->cb_sortcol;
2723         unsigned type = 0;
2724         const char *typestr;
2725         size_t namelen;
2726         size_t typelen;
2727         size_t sizelen;
2728         int typeidx, nameidx, sizeidx;
2729         us_sort_info_t sortinfo = { sortcol, cb->cb_numname };
2730         boolean_t smbentity = B_FALSE;
2731
2732         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
2733                 nomem();
2734         node = safe_malloc(sizeof (us_node_t));
2735         uu_avl_node_init(node, &node->usn_avlnode, avl_pool);
2736         node->usn_nvl = props;
2737
2738         if (domain != NULL && domain[0] != '\0') {
2739 #ifdef HAVE_IDMAP
2740                 /* SMB */
2741                 char sid[MAXNAMELEN + 32];
2742                 uid_t id;
2743                 uint64_t classes;
2744                 int err;
2745                 directory_error_t e;
2746
2747                 smbentity = B_TRUE;
2748
2749                 (void) snprintf(sid, sizeof (sid), "%s-%u", domain, rid);
2750
2751                 if (prop == ZFS_PROP_GROUPUSED || prop == ZFS_PROP_GROUPQUOTA) {
2752                         type = USTYPE_SMB_GRP;
2753                         err = sid_to_id(sid, B_FALSE, &id);
2754                 } else {
2755                         type = USTYPE_SMB_USR;
2756                         err = sid_to_id(sid, B_TRUE, &id);
2757                 }
2758
2759                 if (err == 0) {
2760                         rid = id;
2761                         if (!cb->cb_sid2posix) {
2762                                 e = directory_name_from_sid(NULL, sid, &name,
2763                                     &classes);
2764                                 if (e != NULL)
2765                                         directory_error_free(e);
2766                                 if (name == NULL)
2767                                         name = sid;
2768                         }
2769                 }
2770 #else
2771                 nvlist_free(props);
2772                 free(node);
2773
2774                 return (-1);
2775 #endif /* HAVE_IDMAP */
2776         }
2777
2778         if (cb->cb_sid2posix || domain == NULL || domain[0] == '\0') {
2779                 /* POSIX or -i */
2780                 if (zfs_prop_is_group(prop)) {
2781                         type = USTYPE_PSX_GRP;
2782                         if (!cb->cb_numname) {
2783                                 struct group *g;
2784
2785                                 if ((g = getgrgid(rid)) != NULL)
2786                                         name = g->gr_name;
2787                         }
2788                 } else if (zfs_prop_is_user(prop)) {
2789                         type = USTYPE_PSX_USR;
2790                         if (!cb->cb_numname) {
2791                                 struct passwd *p;
2792
2793                                 if ((p = getpwuid(rid)) != NULL)
2794                                         name = p->pw_name;
2795                         }
2796                 } else {
2797                         type = USTYPE_PROJ;
2798                 }
2799         }
2800
2801         /*
2802          * Make sure that the type/name combination is unique when doing
2803          * SID to POSIX ID translation (hence changing the type from SMB to
2804          * POSIX).
2805          */
2806         if (cb->cb_sid2posix &&
2807             nvlist_add_boolean_value(props, "smbentity", smbentity) != 0)
2808                 nomem();
2809
2810         /* Calculate/update width of TYPE field */
2811         typestr = us_type2str(type);
2812         typelen = strlen(gettext(typestr));
2813         typeidx = us_field_index("type");
2814         if (typelen > cb->cb_width[typeidx])
2815                 cb->cb_width[typeidx] = typelen;
2816         if (nvlist_add_uint32(props, "type", type) != 0)
2817                 nomem();
2818
2819         /* Calculate/update width of NAME field */
2820         if ((cb->cb_numname && cb->cb_sid2posix) || name == NULL) {
2821                 if (nvlist_add_uint64(props, "name", rid) != 0)
2822                         nomem();
2823                 namelen = snprintf(NULL, 0, "%u", rid);
2824         } else {
2825                 if (nvlist_add_string(props, "name", name) != 0)
2826                         nomem();
2827                 namelen = strlen(name);
2828         }
2829         nameidx = us_field_index("name");
2830         if (nameidx >= 0 && namelen > cb->cb_width[nameidx])
2831                 cb->cb_width[nameidx] = namelen;
2832
2833         /*
2834          * Check if this type/name combination is in the list and update it;
2835          * otherwise add new node to the list.
2836          */
2837         if ((n = uu_avl_find(avl, node, &sortinfo, &idx)) == NULL) {
2838                 uu_avl_insert(avl, node, idx);
2839         } else {
2840                 nvlist_free(props);
2841                 free(node);
2842                 node = n;
2843                 props = node->usn_nvl;
2844         }
2845
2846         /* Calculate/update width of USED/QUOTA fields */
2847         if (cb->cb_nicenum) {
2848                 if (prop == ZFS_PROP_USERUSED || prop == ZFS_PROP_GROUPUSED ||
2849                     prop == ZFS_PROP_USERQUOTA || prop == ZFS_PROP_GROUPQUOTA ||
2850                     prop == ZFS_PROP_PROJECTUSED ||
2851                     prop == ZFS_PROP_PROJECTQUOTA) {
2852                         zfs_nicebytes(space, sizebuf, sizeof (sizebuf));
2853                 } else {
2854                         zfs_nicenum(space, sizebuf, sizeof (sizebuf));
2855                 }
2856         } else {
2857                 (void) snprintf(sizebuf, sizeof (sizebuf), "%llu",
2858                     (u_longlong_t)space);
2859         }
2860         sizelen = strlen(sizebuf);
2861         if (prop == ZFS_PROP_USERUSED || prop == ZFS_PROP_GROUPUSED ||
2862             prop == ZFS_PROP_PROJECTUSED) {
2863                 propname = "used";
2864                 if (!nvlist_exists(props, "quota"))
2865                         (void) nvlist_add_uint64(props, "quota", 0);
2866         } else if (prop == ZFS_PROP_USERQUOTA || prop == ZFS_PROP_GROUPQUOTA ||
2867             prop == ZFS_PROP_PROJECTQUOTA) {
2868                 propname = "quota";
2869                 if (!nvlist_exists(props, "used"))
2870                         (void) nvlist_add_uint64(props, "used", 0);
2871         } else if (prop == ZFS_PROP_USEROBJUSED ||
2872             prop == ZFS_PROP_GROUPOBJUSED || prop == ZFS_PROP_PROJECTOBJUSED) {
2873                 propname = "objused";
2874                 if (!nvlist_exists(props, "objquota"))
2875                         (void) nvlist_add_uint64(props, "objquota", 0);
2876         } else if (prop == ZFS_PROP_USEROBJQUOTA ||
2877             prop == ZFS_PROP_GROUPOBJQUOTA ||
2878             prop == ZFS_PROP_PROJECTOBJQUOTA) {
2879                 propname = "objquota";
2880                 if (!nvlist_exists(props, "objused"))
2881                         (void) nvlist_add_uint64(props, "objused", 0);
2882         } else {
2883                 return (-1);
2884         }
2885         sizeidx = us_field_index(propname);
2886         if (sizeidx >= 0 && sizelen > cb->cb_width[sizeidx])
2887                 cb->cb_width[sizeidx] = sizelen;
2888
2889         if (nvlist_add_uint64(props, propname, space) != 0)
2890                 nomem();
2891
2892         return (0);
2893 }
2894
2895 static void
2896 print_us_node(boolean_t scripted, boolean_t parsable, int *fields, int types,
2897     size_t *width, us_node_t *node)
2898 {
2899         nvlist_t *nvl = node->usn_nvl;
2900         char valstr[MAXNAMELEN];
2901         boolean_t first = B_TRUE;
2902         int cfield = 0;
2903         int field;
2904         uint32_t ustype;
2905
2906         /* Check type */
2907         (void) nvlist_lookup_uint32(nvl, "type", &ustype);
2908         if (!(ustype & types))
2909                 return;
2910
2911         while ((field = fields[cfield]) != USFIELD_LAST) {
2912                 nvpair_t *nvp = NULL;
2913                 data_type_t type;
2914                 uint32_t val32;
2915                 uint64_t val64;
2916                 char *strval = "-";
2917
2918                 while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
2919                         if (strcmp(nvpair_name(nvp),
2920                             us_field_names[field]) == 0)
2921                                 break;
2922                 }
2923
2924                 type = nvp == NULL ? DATA_TYPE_UNKNOWN : nvpair_type(nvp);
2925                 switch (type) {
2926                 case DATA_TYPE_UINT32:
2927                         (void) nvpair_value_uint32(nvp, &val32);
2928                         break;
2929                 case DATA_TYPE_UINT64:
2930                         (void) nvpair_value_uint64(nvp, &val64);
2931                         break;
2932                 case DATA_TYPE_STRING:
2933                         (void) nvpair_value_string(nvp, &strval);
2934                         break;
2935                 case DATA_TYPE_UNKNOWN:
2936                         break;
2937                 default:
2938                         (void) fprintf(stderr, "invalid data type\n");
2939                 }
2940
2941                 switch (field) {
2942                 case USFIELD_TYPE:
2943                         if (type == DATA_TYPE_UINT32)
2944                                 strval = (char *)us_type2str(val32);
2945                         break;
2946                 case USFIELD_NAME:
2947                         if (type == DATA_TYPE_UINT64) {
2948                                 (void) sprintf(valstr, "%llu",
2949                                     (u_longlong_t)val64);
2950                                 strval = valstr;
2951                         }
2952                         break;
2953                 case USFIELD_USED:
2954                 case USFIELD_QUOTA:
2955                         if (type == DATA_TYPE_UINT64) {
2956                                 if (parsable) {
2957                                         (void) sprintf(valstr, "%llu",
2958                                             (u_longlong_t)val64);
2959                                         strval = valstr;
2960                                 } else if (field == USFIELD_QUOTA &&
2961                                     val64 == 0) {
2962                                         strval = "none";
2963                                 } else {
2964                                         zfs_nicebytes(val64, valstr,
2965                                             sizeof (valstr));
2966                                         strval = valstr;
2967                                 }
2968                         }
2969                         break;
2970                 case USFIELD_OBJUSED:
2971                 case USFIELD_OBJQUOTA:
2972                         if (type == DATA_TYPE_UINT64) {
2973                                 if (parsable) {
2974                                         (void) sprintf(valstr, "%llu",
2975                                             (u_longlong_t)val64);
2976                                         strval = valstr;
2977                                 } else if (field == USFIELD_OBJQUOTA &&
2978                                     val64 == 0) {
2979                                         strval = "none";
2980                                 } else {
2981                                         zfs_nicenum(val64, valstr,
2982                                             sizeof (valstr));
2983                                         strval = valstr;
2984                                 }
2985                         }
2986                         break;
2987                 }
2988
2989                 if (!first) {
2990                         if (scripted)
2991                                 (void) printf("\t");
2992                         else
2993                                 (void) printf("  ");
2994                 }
2995                 if (scripted)
2996                         (void) printf("%s", strval);
2997                 else if (field == USFIELD_TYPE || field == USFIELD_NAME)
2998                         (void) printf("%-*s", (int)width[field], strval);
2999                 else
3000                         (void) printf("%*s", (int)width[field], strval);
3001
3002                 first = B_FALSE;
3003                 cfield++;
3004         }
3005
3006         (void) printf("\n");
3007 }
3008
3009 static void
3010 print_us(boolean_t scripted, boolean_t parsable, int *fields, int types,
3011     size_t *width, boolean_t rmnode, uu_avl_t *avl)
3012 {
3013         us_node_t *node;
3014         const char *col;
3015         int cfield = 0;
3016         int field;
3017
3018         if (!scripted) {
3019                 boolean_t first = B_TRUE;
3020
3021                 while ((field = fields[cfield]) != USFIELD_LAST) {
3022                         col = gettext(us_field_hdr[field]);
3023                         if (field == USFIELD_TYPE || field == USFIELD_NAME) {
3024                                 (void) printf(first ? "%-*s" : "  %-*s",
3025                                     (int)width[field], col);
3026                         } else {
3027                                 (void) printf(first ? "%*s" : "  %*s",
3028                                     (int)width[field], col);
3029                         }
3030                         first = B_FALSE;
3031                         cfield++;
3032                 }
3033                 (void) printf("\n");
3034         }
3035
3036         for (node = uu_avl_first(avl); node; node = uu_avl_next(avl, node)) {
3037                 print_us_node(scripted, parsable, fields, types, width, node);
3038                 if (rmnode)
3039                         nvlist_free(node->usn_nvl);
3040         }
3041 }
3042
3043 static int
3044 zfs_do_userspace(int argc, char **argv)
3045 {
3046         zfs_handle_t *zhp;
3047         zfs_userquota_prop_t p;
3048         uu_avl_pool_t *avl_pool;
3049         uu_avl_t *avl_tree;
3050         uu_avl_walk_t *walk;
3051         char *delim;
3052         char deffields[] = "type,name,used,quota,objused,objquota";
3053         char *ofield = NULL;
3054         char *tfield = NULL;
3055         int cfield = 0;
3056         int fields[256];
3057         int i;
3058         boolean_t scripted = B_FALSE;
3059         boolean_t prtnum = B_FALSE;
3060         boolean_t parsable = B_FALSE;
3061         boolean_t sid2posix = B_FALSE;
3062         int ret = 0;
3063         int c;
3064         zfs_sort_column_t *sortcol = NULL;
3065         int types = USTYPE_PSX_USR | USTYPE_SMB_USR;
3066         us_cbdata_t cb;
3067         us_node_t *node;
3068         us_node_t *rmnode;
3069         uu_list_pool_t *listpool;
3070         uu_list_t *list;
3071         uu_avl_index_t idx = 0;
3072         uu_list_index_t idx2 = 0;
3073
3074         if (argc < 2)
3075                 usage(B_FALSE);
3076
3077         if (strcmp(argv[0], "groupspace") == 0) {
3078                 /* Toggle default group types */
3079                 types = USTYPE_PSX_GRP | USTYPE_SMB_GRP;
3080         } else if (strcmp(argv[0], "projectspace") == 0) {
3081                 types = USTYPE_PROJ;
3082                 prtnum = B_TRUE;
3083         }
3084
3085         while ((c = getopt(argc, argv, "nHpo:s:S:t:i")) != -1) {
3086                 switch (c) {
3087                 case 'n':
3088                         if (types == USTYPE_PROJ) {
3089                                 (void) fprintf(stderr,
3090                                     gettext("invalid option 'n'\n"));
3091                                 usage(B_FALSE);
3092                         }
3093                         prtnum = B_TRUE;
3094                         break;
3095                 case 'H':
3096                         scripted = B_TRUE;
3097                         break;
3098                 case 'p':
3099                         parsable = B_TRUE;
3100                         break;
3101                 case 'o':
3102                         ofield = optarg;
3103                         break;
3104                 case 's':
3105                 case 'S':
3106                         if (zfs_add_sort_column(&sortcol, optarg,
3107                             c == 's' ? B_FALSE : B_TRUE) != 0) {
3108                                 (void) fprintf(stderr,
3109                                     gettext("invalid field '%s'\n"), optarg);
3110                                 usage(B_FALSE);
3111                         }
3112                         break;
3113                 case 't':
3114                         if (types == USTYPE_PROJ) {
3115                                 (void) fprintf(stderr,
3116                                     gettext("invalid option 't'\n"));
3117                                 usage(B_FALSE);
3118                         }
3119                         tfield = optarg;
3120                         break;
3121                 case 'i':
3122                         if (types == USTYPE_PROJ) {
3123                                 (void) fprintf(stderr,
3124                                     gettext("invalid option 'i'\n"));
3125                                 usage(B_FALSE);
3126                         }
3127                         sid2posix = B_TRUE;
3128                         break;
3129                 case ':':
3130                         (void) fprintf(stderr, gettext("missing argument for "
3131                             "'%c' option\n"), optopt);
3132                         usage(B_FALSE);
3133                         break;
3134                 case '?':
3135                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3136                             optopt);
3137                         usage(B_FALSE);
3138                 }
3139         }
3140
3141         argc -= optind;
3142         argv += optind;
3143
3144         if (argc < 1) {
3145                 (void) fprintf(stderr, gettext("missing dataset name\n"));
3146                 usage(B_FALSE);
3147         }
3148         if (argc > 1) {
3149                 (void) fprintf(stderr, gettext("too many arguments\n"));
3150                 usage(B_FALSE);
3151         }
3152
3153         /* Use default output fields if not specified using -o */
3154         if (ofield == NULL)
3155                 ofield = deffields;
3156         do {
3157                 if ((delim = strchr(ofield, ',')) != NULL)
3158                         *delim = '\0';
3159                 if ((fields[cfield++] = us_field_index(ofield)) == -1) {
3160                         (void) fprintf(stderr, gettext("invalid type '%s' "
3161                             "for -o option\n"), ofield);
3162                         return (-1);
3163                 }
3164                 if (delim != NULL)
3165                         ofield = delim + 1;
3166         } while (delim != NULL);
3167         fields[cfield] = USFIELD_LAST;
3168
3169         /* Override output types (-t option) */
3170         if (tfield != NULL) {
3171                 types = 0;
3172
3173                 do {
3174                         boolean_t found = B_FALSE;
3175
3176                         if ((delim = strchr(tfield, ',')) != NULL)
3177                                 *delim = '\0';
3178                         for (i = 0; i < sizeof (us_type_bits) / sizeof (int);
3179                             i++) {
3180                                 if (strcmp(tfield, us_type_names[i]) == 0) {
3181                                         found = B_TRUE;
3182                                         types |= us_type_bits[i];
3183                                         break;
3184                                 }
3185                         }
3186                         if (!found) {
3187                                 (void) fprintf(stderr, gettext("invalid type "
3188                                     "'%s' for -t option\n"), tfield);
3189                                 return (-1);
3190                         }
3191                         if (delim != NULL)
3192                                 tfield = delim + 1;
3193                 } while (delim != NULL);
3194         }
3195
3196         if ((zhp = zfs_path_to_zhandle(g_zfs, argv[0], ZFS_TYPE_FILESYSTEM |
3197             ZFS_TYPE_SNAPSHOT)) == NULL)
3198                 return (1);
3199         if (zhp->zfs_head_type != ZFS_TYPE_FILESYSTEM) {
3200                 (void) fprintf(stderr, gettext("operation is only applicable "
3201                     "to filesystems and their snapshots\n"));
3202                 zfs_close(zhp);
3203                 return (1);
3204         }
3205
3206         if ((avl_pool = uu_avl_pool_create("us_avl_pool", sizeof (us_node_t),
3207             offsetof(us_node_t, usn_avlnode), us_compare, UU_DEFAULT)) == NULL)
3208                 nomem();
3209         if ((avl_tree = uu_avl_create(avl_pool, NULL, UU_DEFAULT)) == NULL)
3210                 nomem();
3211
3212         /* Always add default sorting columns */
3213         (void) zfs_add_sort_column(&sortcol, "type", B_FALSE);
3214         (void) zfs_add_sort_column(&sortcol, "name", B_FALSE);
3215
3216         cb.cb_sortcol = sortcol;
3217         cb.cb_numname = prtnum;
3218         cb.cb_nicenum = !parsable;
3219         cb.cb_avl_pool = avl_pool;
3220         cb.cb_avl = avl_tree;
3221         cb.cb_sid2posix = sid2posix;
3222
3223         for (i = 0; i < USFIELD_LAST; i++)
3224                 cb.cb_width[i] = strlen(gettext(us_field_hdr[i]));
3225
3226         for (p = 0; p < ZFS_NUM_USERQUOTA_PROPS; p++) {
3227                 if ((zfs_prop_is_user(p) &&
3228                     !(types & (USTYPE_PSX_USR | USTYPE_SMB_USR))) ||
3229                     (zfs_prop_is_group(p) &&
3230                     !(types & (USTYPE_PSX_GRP | USTYPE_SMB_GRP))) ||
3231                     (zfs_prop_is_project(p) && types != USTYPE_PROJ))
3232                         continue;
3233
3234                 cb.cb_prop = p;
3235                 if ((ret = zfs_userspace(zhp, p, userspace_cb, &cb)) != 0) {
3236                         zfs_close(zhp);
3237                         return (ret);
3238                 }
3239         }
3240         zfs_close(zhp);
3241
3242         /* Sort the list */
3243         if ((node = uu_avl_first(avl_tree)) == NULL)
3244                 return (0);
3245
3246         us_populated = B_TRUE;
3247
3248         listpool = uu_list_pool_create("tmplist", sizeof (us_node_t),
3249             offsetof(us_node_t, usn_listnode), NULL, UU_DEFAULT);
3250         list = uu_list_create(listpool, NULL, UU_DEFAULT);
3251         uu_list_node_init(node, &node->usn_listnode, listpool);
3252
3253         while (node != NULL) {
3254                 rmnode = node;
3255                 node = uu_avl_next(avl_tree, node);
3256                 uu_avl_remove(avl_tree, rmnode);
3257                 if (uu_list_find(list, rmnode, NULL, &idx2) == NULL)
3258                         uu_list_insert(list, rmnode, idx2);
3259         }
3260
3261         for (node = uu_list_first(list); node != NULL;
3262             node = uu_list_next(list, node)) {
3263                 us_sort_info_t sortinfo = { sortcol, cb.cb_numname };
3264
3265                 if (uu_avl_find(avl_tree, node, &sortinfo, &idx) == NULL)
3266                         uu_avl_insert(avl_tree, node, idx);
3267         }
3268
3269         uu_list_destroy(list);
3270         uu_list_pool_destroy(listpool);
3271
3272         /* Print and free node nvlist memory */
3273         print_us(scripted, parsable, fields, types, cb.cb_width, B_TRUE,
3274             cb.cb_avl);
3275
3276         zfs_free_sort_columns(sortcol);
3277
3278         /* Clean up the AVL tree */
3279         if ((walk = uu_avl_walk_start(cb.cb_avl, UU_WALK_ROBUST)) == NULL)
3280                 nomem();
3281
3282         while ((node = uu_avl_walk_next(walk)) != NULL) {
3283                 uu_avl_remove(cb.cb_avl, node);
3284                 free(node);
3285         }
3286
3287         uu_avl_walk_end(walk);
3288         uu_avl_destroy(avl_tree);
3289         uu_avl_pool_destroy(avl_pool);
3290
3291         return (ret);
3292 }
3293
3294 /*
3295  * list [-Hp][-r|-d max] [-o property[,...]] [-s property] ... [-S property]
3296  *      [-t type[,...]] [filesystem|volume|snapshot] ...
3297  *
3298  *      -H      Scripted mode; elide headers and separate columns by tabs
3299  *      -p      Display values in parsable (literal) format.
3300  *      -r      Recurse over all children
3301  *      -d      Limit recursion by depth.
3302  *      -o      Control which fields to display.
3303  *      -s      Specify sort columns, descending order.
3304  *      -S      Specify sort columns, ascending order.
3305  *      -t      Control which object types to display.
3306  *
3307  * When given no arguments, list all filesystems in the system.
3308  * Otherwise, list the specified datasets, optionally recursing down them if
3309  * '-r' is specified.
3310  */
3311 typedef struct list_cbdata {
3312         boolean_t       cb_first;
3313         boolean_t       cb_literal;
3314         boolean_t       cb_scripted;
3315         zprop_list_t    *cb_proplist;
3316 } list_cbdata_t;
3317
3318 /*
3319  * Given a list of columns to display, output appropriate headers for each one.
3320  */
3321 static void
3322 print_header(list_cbdata_t *cb)
3323 {
3324         zprop_list_t *pl = cb->cb_proplist;
3325         char headerbuf[ZFS_MAXPROPLEN];
3326         const char *header;
3327         int i;
3328         boolean_t first = B_TRUE;
3329         boolean_t right_justify;
3330
3331         for (; pl != NULL; pl = pl->pl_next) {
3332                 if (!first) {
3333                         (void) printf("  ");
3334                 } else {
3335                         first = B_FALSE;
3336                 }
3337
3338                 right_justify = B_FALSE;
3339                 if (pl->pl_prop != ZPROP_INVAL) {
3340                         header = zfs_prop_column_name(pl->pl_prop);
3341                         right_justify = zfs_prop_align_right(pl->pl_prop);
3342                 } else {
3343                         for (i = 0; pl->pl_user_prop[i] != '\0'; i++)
3344                                 headerbuf[i] = toupper(pl->pl_user_prop[i]);
3345                         headerbuf[i] = '\0';
3346                         header = headerbuf;
3347                 }
3348
3349                 if (pl->pl_next == NULL && !right_justify)
3350                         (void) printf("%s", header);
3351                 else if (right_justify)
3352                         (void) printf("%*s", (int)pl->pl_width, header);
3353                 else
3354                         (void) printf("%-*s", (int)pl->pl_width, header);
3355         }
3356
3357         (void) printf("\n");
3358 }
3359
3360 /*
3361  * Given a dataset and a list of fields, print out all the properties according
3362  * to the described layout.
3363  */
3364 static void
3365 print_dataset(zfs_handle_t *zhp, list_cbdata_t *cb)
3366 {
3367         zprop_list_t *pl = cb->cb_proplist;
3368         boolean_t first = B_TRUE;
3369         char property[ZFS_MAXPROPLEN];
3370         nvlist_t *userprops = zfs_get_user_props(zhp);
3371         nvlist_t *propval;
3372         char *propstr;
3373         boolean_t right_justify;
3374
3375         for (; pl != NULL; pl = pl->pl_next) {
3376                 if (!first) {
3377                         if (cb->cb_scripted)
3378                                 (void) printf("\t");
3379                         else
3380                                 (void) printf("  ");
3381                 } else {
3382                         first = B_FALSE;
3383                 }
3384
3385                 if (pl->pl_prop == ZFS_PROP_NAME) {
3386                         (void) strlcpy(property, zfs_get_name(zhp),
3387                             sizeof (property));
3388                         propstr = property;
3389                         right_justify = zfs_prop_align_right(pl->pl_prop);
3390                 } else if (pl->pl_prop != ZPROP_INVAL) {
3391                         if (zfs_prop_get(zhp, pl->pl_prop, property,
3392                             sizeof (property), NULL, NULL, 0,
3393                             cb->cb_literal) != 0)
3394                                 propstr = "-";
3395                         else
3396                                 propstr = property;
3397                         right_justify = zfs_prop_align_right(pl->pl_prop);
3398                 } else if (zfs_prop_userquota(pl->pl_user_prop)) {
3399                         if (zfs_prop_get_userquota(zhp, pl->pl_user_prop,
3400                             property, sizeof (property), cb->cb_literal) != 0)
3401                                 propstr = "-";
3402                         else
3403                                 propstr = property;
3404                         right_justify = B_TRUE;
3405                 } else if (zfs_prop_written(pl->pl_user_prop)) {
3406                         if (zfs_prop_get_written(zhp, pl->pl_user_prop,
3407                             property, sizeof (property), cb->cb_literal) != 0)
3408                                 propstr = "-";
3409                         else
3410                                 propstr = property;
3411                         right_justify = B_TRUE;
3412                 } else {
3413                         if (nvlist_lookup_nvlist(userprops,
3414                             pl->pl_user_prop, &propval) != 0)
3415                                 propstr = "-";
3416                         else
3417                                 verify(nvlist_lookup_string(propval,
3418                                     ZPROP_VALUE, &propstr) == 0);
3419                         right_justify = B_FALSE;
3420                 }
3421
3422                 /*
3423                  * If this is being called in scripted mode, or if this is the
3424                  * last column and it is left-justified, don't include a width
3425                  * format specifier.
3426                  */
3427                 if (cb->cb_scripted || (pl->pl_next == NULL && !right_justify))
3428                         (void) printf("%s", propstr);
3429                 else if (right_justify)
3430                         (void) printf("%*s", (int)pl->pl_width, propstr);
3431                 else
3432                         (void) printf("%-*s", (int)pl->pl_width, propstr);
3433         }
3434
3435         (void) printf("\n");
3436 }
3437
3438 /*
3439  * Generic callback function to list a dataset or snapshot.
3440  */
3441 static int
3442 list_callback(zfs_handle_t *zhp, void *data)
3443 {
3444         list_cbdata_t *cbp = data;
3445
3446         if (cbp->cb_first) {
3447                 if (!cbp->cb_scripted)
3448                         print_header(cbp);
3449                 cbp->cb_first = B_FALSE;
3450         }
3451
3452         print_dataset(zhp, cbp);
3453
3454         return (0);
3455 }
3456
3457 static int
3458 zfs_do_list(int argc, char **argv)
3459 {
3460         int c;
3461         static char default_fields[] =
3462             "name,used,available,referenced,mountpoint";
3463         int types = ZFS_TYPE_DATASET;
3464         boolean_t types_specified = B_FALSE;
3465         char *fields = NULL;
3466         list_cbdata_t cb = { 0 };
3467         char *value;
3468         int limit = 0;
3469         int ret = 0;
3470         zfs_sort_column_t *sortcol = NULL;
3471         int flags = ZFS_ITER_PROP_LISTSNAPS | ZFS_ITER_ARGS_CAN_BE_PATHS;
3472
3473         /* check options */
3474         while ((c = getopt(argc, argv, "HS:d:o:prs:t:")) != -1) {
3475                 switch (c) {
3476                 case 'o':
3477                         fields = optarg;
3478                         break;
3479                 case 'p':
3480                         cb.cb_literal = B_TRUE;
3481                         flags |= ZFS_ITER_LITERAL_PROPS;
3482                         break;
3483                 case 'd':
3484                         limit = parse_depth(optarg, &flags);
3485                         break;
3486                 case 'r':
3487                         flags |= ZFS_ITER_RECURSE;
3488                         break;
3489                 case 'H':
3490                         cb.cb_scripted = B_TRUE;
3491                         break;
3492                 case 's':
3493                         if (zfs_add_sort_column(&sortcol, optarg,
3494                             B_FALSE) != 0) {
3495                                 (void) fprintf(stderr,
3496                                     gettext("invalid property '%s'\n"), optarg);
3497                                 usage(B_FALSE);
3498                         }
3499                         break;
3500                 case 'S':
3501                         if (zfs_add_sort_column(&sortcol, optarg,
3502                             B_TRUE) != 0) {
3503                                 (void) fprintf(stderr,
3504                                     gettext("invalid property '%s'\n"), optarg);
3505                                 usage(B_FALSE);
3506                         }
3507                         break;
3508                 case 't':
3509                         types = 0;
3510                         types_specified = B_TRUE;
3511                         flags &= ~ZFS_ITER_PROP_LISTSNAPS;
3512                         while (*optarg != '\0') {
3513                                 static char *type_subopts[] = { "filesystem",
3514                                     "volume", "snapshot", "snap", "bookmark",
3515                                     "all", NULL };
3516
3517                                 switch (getsubopt(&optarg, type_subopts,
3518                                     &value)) {
3519                                 case 0:
3520                                         types |= ZFS_TYPE_FILESYSTEM;
3521                                         break;
3522                                 case 1:
3523                                         types |= ZFS_TYPE_VOLUME;
3524                                         break;
3525                                 case 2:
3526                                 case 3:
3527                                         types |= ZFS_TYPE_SNAPSHOT;
3528                                         break;
3529                                 case 4:
3530                                         types |= ZFS_TYPE_BOOKMARK;
3531                                         break;
3532                                 case 5:
3533                                         types = ZFS_TYPE_DATASET |
3534                                             ZFS_TYPE_BOOKMARK;
3535                                         break;
3536                                 default:
3537                                         (void) fprintf(stderr,
3538                                             gettext("invalid type '%s'\n"),
3539                                             value);
3540                                         usage(B_FALSE);
3541                                 }
3542                         }
3543                         break;
3544                 case ':':
3545                         (void) fprintf(stderr, gettext("missing argument for "
3546                             "'%c' option\n"), optopt);
3547                         usage(B_FALSE);
3548                         break;
3549                 case '?':
3550                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3551                             optopt);
3552                         usage(B_FALSE);
3553                 }
3554         }
3555
3556         argc -= optind;
3557         argv += optind;
3558
3559         if (fields == NULL)
3560                 fields = default_fields;
3561
3562         /*
3563          * If we are only going to list snapshot names and sort by name,
3564          * then we can use faster version.
3565          */
3566         if (strcmp(fields, "name") == 0 && zfs_sort_only_by_name(sortcol))
3567                 flags |= ZFS_ITER_SIMPLE;
3568
3569         /*
3570          * If "-o space" and no types were specified, don't display snapshots.
3571          */
3572         if (strcmp(fields, "space") == 0 && types_specified == B_FALSE)
3573                 types &= ~ZFS_TYPE_SNAPSHOT;
3574
3575         /*
3576          * Handle users who want to list all snapshots or bookmarks
3577          * of the current dataset (ex. 'zfs list -t snapshot <dataset>').
3578          */
3579         if ((types == ZFS_TYPE_SNAPSHOT || types == ZFS_TYPE_BOOKMARK) &&
3580             argc > 0 && (flags & ZFS_ITER_RECURSE) == 0 && limit == 0) {
3581                 flags |= (ZFS_ITER_DEPTH_LIMIT | ZFS_ITER_RECURSE);
3582                 limit = 1;
3583         }
3584
3585         /*
3586          * If the user specifies '-o all', the zprop_get_list() doesn't
3587          * normally include the name of the dataset.  For 'zfs list', we always
3588          * want this property to be first.
3589          */
3590         if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
3591             != 0)
3592                 usage(B_FALSE);
3593
3594         cb.cb_first = B_TRUE;
3595
3596         ret = zfs_for_each(argc, argv, flags, types, sortcol, &cb.cb_proplist,
3597             limit, list_callback, &cb);
3598
3599         zprop_free_list(cb.cb_proplist);
3600         zfs_free_sort_columns(sortcol);
3601
3602         if (ret == 0 && cb.cb_first && !cb.cb_scripted)
3603                 (void) fprintf(stderr, gettext("no datasets available\n"));
3604
3605         return (ret);
3606 }
3607
3608 /*
3609  * zfs rename [-fu] <fs | snap | vol> <fs | snap | vol>
3610  * zfs rename [-f] -p <fs | vol> <fs | vol>
3611  * zfs rename [-u] -r <snap> <snap>
3612  *
3613  * Renames the given dataset to another of the same type.
3614  *
3615  * The '-p' flag creates all the non-existing ancestors of the target first.
3616  * The '-u' flag prevents file systems from being remounted during rename.
3617  */
3618 /* ARGSUSED */
3619 static int
3620 zfs_do_rename(int argc, char **argv)
3621 {
3622         zfs_handle_t *zhp;
3623         renameflags_t flags = { 0 };
3624         int c;
3625         int ret = 0;
3626         int types;
3627         boolean_t parents = B_FALSE;
3628
3629         /* check options */
3630         while ((c = getopt(argc, argv, "pruf")) != -1) {
3631                 switch (c) {
3632                 case 'p':
3633                         parents = B_TRUE;
3634                         break;
3635                 case 'r':
3636                         flags.recursive = B_TRUE;
3637                         break;
3638                 case 'u':
3639                         flags.nounmount = B_TRUE;
3640                         break;
3641                 case 'f':
3642                         flags.forceunmount = B_TRUE;
3643                         break;
3644                 case '?':
3645                 default:
3646                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3647                             optopt);
3648                         usage(B_FALSE);
3649                 }
3650         }
3651
3652         argc -= optind;
3653         argv += optind;
3654
3655         /* check number of arguments */
3656         if (argc < 1) {
3657                 (void) fprintf(stderr, gettext("missing source dataset "
3658                     "argument\n"));
3659                 usage(B_FALSE);
3660         }
3661         if (argc < 2) {
3662                 (void) fprintf(stderr, gettext("missing target dataset "
3663                     "argument\n"));
3664                 usage(B_FALSE);
3665         }
3666         if (argc > 2) {
3667                 (void) fprintf(stderr, gettext("too many arguments\n"));
3668                 usage(B_FALSE);
3669         }
3670
3671         if (flags.recursive && parents) {
3672                 (void) fprintf(stderr, gettext("-p and -r options are mutually "
3673                     "exclusive\n"));
3674                 usage(B_FALSE);
3675         }
3676
3677         if (flags.nounmount && parents) {
3678                 (void) fprintf(stderr, gettext("-u and -p options are mutually "
3679                     "exclusive\n"));
3680                 usage(B_FALSE);
3681         }
3682
3683         if (flags.recursive && strchr(argv[0], '@') == 0) {
3684                 (void) fprintf(stderr, gettext("source dataset for recursive "
3685                     "rename must be a snapshot\n"));
3686                 usage(B_FALSE);
3687         }
3688
3689         if (flags.nounmount)
3690                 types = ZFS_TYPE_FILESYSTEM;
3691         else if (parents)
3692                 types = ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME;
3693         else
3694                 types = ZFS_TYPE_DATASET;
3695
3696         if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL)
3697                 return (1);
3698
3699         /* If we were asked and the name looks good, try to create ancestors. */
3700         if (parents && zfs_name_valid(argv[1], zfs_get_type(zhp)) &&
3701             zfs_create_ancestors(g_zfs, argv[1]) != 0) {
3702                 zfs_close(zhp);
3703                 return (1);
3704         }
3705
3706         ret = (zfs_rename(zhp, argv[1], flags) != 0);
3707
3708         zfs_close(zhp);
3709         return (ret);
3710 }
3711
3712 /*
3713  * zfs promote <fs>
3714  *
3715  * Promotes the given clone fs to be the parent
3716  */
3717 /* ARGSUSED */
3718 static int
3719 zfs_do_promote(int argc, char **argv)
3720 {
3721         zfs_handle_t *zhp;
3722         int ret = 0;
3723
3724         /* check options */
3725         if (argc > 1 && argv[1][0] == '-') {
3726                 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3727                     argv[1][1]);
3728                 usage(B_FALSE);
3729         }
3730
3731         /* check number of arguments */
3732         if (argc < 2) {
3733                 (void) fprintf(stderr, gettext("missing clone filesystem"
3734                     " argument\n"));
3735                 usage(B_FALSE);
3736         }
3737         if (argc > 2) {
3738                 (void) fprintf(stderr, gettext("too many arguments\n"));
3739                 usage(B_FALSE);
3740         }
3741
3742         zhp = zfs_open(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3743         if (zhp == NULL)
3744                 return (1);
3745
3746         ret = (zfs_promote(zhp) != 0);
3747
3748
3749         zfs_close(zhp);
3750         return (ret);
3751 }
3752
3753 static int
3754 zfs_do_redact(int argc, char **argv)
3755 {
3756         char *snap = NULL;
3757         char *bookname = NULL;
3758         char **rsnaps = NULL;
3759         int numrsnaps = 0;
3760         argv++;
3761         argc--;
3762         if (argc < 3) {
3763                 (void) fprintf(stderr, gettext("too few arguments\n"));
3764                 usage(B_FALSE);
3765         }
3766
3767         snap = argv[0];
3768         bookname = argv[1];
3769         rsnaps = argv + 2;
3770         numrsnaps = argc - 2;
3771
3772         nvlist_t *rsnapnv = fnvlist_alloc();
3773
3774         for (int i = 0; i < numrsnaps; i++) {
3775                 fnvlist_add_boolean(rsnapnv, rsnaps[i]);
3776         }
3777
3778         int err = lzc_redact(snap, bookname, rsnapnv);
3779         fnvlist_free(rsnapnv);
3780
3781         switch (err) {
3782         case 0:
3783                 break;
3784         case ENOENT:
3785                 (void) fprintf(stderr,
3786                     gettext("provided snapshot %s does not exist\n"), snap);
3787                 break;
3788         case EEXIST:
3789                 (void) fprintf(stderr, gettext("specified redaction bookmark "
3790                     "(%s) provided already exists\n"), bookname);
3791                 break;
3792         case ENAMETOOLONG:
3793                 (void) fprintf(stderr, gettext("provided bookmark name cannot "
3794                     "be used, final name would be too long\n"));
3795                 break;
3796         case E2BIG:
3797                 (void) fprintf(stderr, gettext("too many redaction snapshots "
3798                     "specified\n"));
3799                 break;
3800         case EINVAL:
3801                 if (strchr(bookname, '#') != NULL)
3802                         (void) fprintf(stderr, gettext(
3803                             "redaction bookmark name must not contain '#'\n"));
3804                 else
3805                         (void) fprintf(stderr, gettext(
3806                             "redaction snapshot must be descendent of "
3807                             "snapshot being redacted\n"));
3808                 break;
3809         case EALREADY:
3810                 (void) fprintf(stderr, gettext("attempted to redact redacted "
3811                     "dataset or with respect to redacted dataset\n"));
3812                 break;
3813         case ENOTSUP:
3814                 (void) fprintf(stderr, gettext("redaction bookmarks feature "
3815                     "not enabled\n"));
3816                 break;
3817         case EXDEV:
3818                 (void) fprintf(stderr, gettext("potentially invalid redaction "
3819                     "snapshot; full dataset names required\n"));
3820                 break;
3821         default:
3822                 (void) fprintf(stderr, gettext("internal error: %s\n"),
3823                     strerror(errno));
3824         }
3825
3826         return (err);
3827 }
3828
3829 /*
3830  * zfs rollback [-rRf] <snapshot>
3831  *
3832  *      -r      Delete any intervening snapshots before doing rollback
3833  *      -R      Delete any snapshots and their clones
3834  *      -f      ignored for backwards compatibility
3835  *
3836  * Given a filesystem, rollback to a specific snapshot, discarding any changes
3837  * since then and making it the active dataset.  If more recent snapshots exist,
3838  * the command will complain unless the '-r' flag is given.
3839  */
3840 typedef struct rollback_cbdata {
3841         uint64_t        cb_create;
3842         uint8_t         cb_younger_ds_printed;
3843         boolean_t       cb_first;
3844         int             cb_doclones;
3845         char            *cb_target;
3846         int             cb_error;
3847         boolean_t       cb_recurse;
3848 } rollback_cbdata_t;
3849
3850 static int
3851 rollback_check_dependent(zfs_handle_t *zhp, void *data)
3852 {
3853         rollback_cbdata_t *cbp = data;
3854
3855         if (cbp->cb_first && cbp->cb_recurse) {
3856                 (void) fprintf(stderr, gettext("cannot rollback to "
3857                     "'%s': clones of previous snapshots exist\n"),
3858                     cbp->cb_target);
3859                 (void) fprintf(stderr, gettext("use '-R' to "
3860                     "force deletion of the following clones and "
3861                     "dependents:\n"));
3862                 cbp->cb_first = 0;
3863                 cbp->cb_error = 1;
3864         }
3865
3866         (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
3867
3868         zfs_close(zhp);
3869         return (0);
3870 }
3871
3872
3873 /*
3874  * Report some snapshots/bookmarks more recent than the one specified.
3875  * Used when '-r' is not specified. We reuse this same callback for the
3876  * snapshot dependents - if 'cb_dependent' is set, then this is a
3877  * dependent and we should report it without checking the transaction group.
3878  */
3879 static int
3880 rollback_check(zfs_handle_t *zhp, void *data)
3881 {
3882         rollback_cbdata_t *cbp = data;
3883         /*
3884          * Max number of younger snapshots and/or bookmarks to display before
3885          * we stop the iteration.
3886          */
3887         const uint8_t max_younger = 32;
3888
3889         if (cbp->cb_doclones) {
3890                 zfs_close(zhp);
3891                 return (0);
3892         }
3893
3894         if (zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > cbp->cb_create) {
3895                 if (cbp->cb_first && !cbp->cb_recurse) {
3896                         (void) fprintf(stderr, gettext("cannot "
3897                             "rollback to '%s': more recent snapshots "
3898                             "or bookmarks exist\n"),
3899                             cbp->cb_target);
3900                         (void) fprintf(stderr, gettext("use '-r' to "
3901                             "force deletion of the following "
3902                             "snapshots and bookmarks:\n"));
3903                         cbp->cb_first = 0;
3904                         cbp->cb_error = 1;
3905                 }
3906
3907                 if (cbp->cb_recurse) {
3908                         if (zfs_iter_dependents(zhp, B_TRUE,
3909                             rollback_check_dependent, cbp) != 0) {
3910                                 zfs_close(zhp);
3911                                 return (-1);
3912                         }
3913                 } else {
3914                         (void) fprintf(stderr, "%s\n",
3915                             zfs_get_name(zhp));
3916                         cbp->cb_younger_ds_printed++;
3917                 }
3918         }
3919         zfs_close(zhp);
3920
3921         if (cbp->cb_younger_ds_printed == max_younger) {
3922                 /*
3923                  * This non-recursive rollback is going to fail due to the
3924                  * presence of snapshots and/or bookmarks that are younger than
3925                  * the rollback target.
3926                  * We printed some of the offending objects, now we stop
3927                  * zfs_iter_snapshot/bookmark iteration so we can fail fast and
3928                  * avoid iterating over the rest of the younger objects
3929                  */
3930                 (void) fprintf(stderr, gettext("Output limited to %d "
3931                     "snapshots/bookmarks\n"), max_younger);
3932                 return (-1);
3933         }
3934         return (0);
3935 }
3936
3937 static int
3938 zfs_do_rollback(int argc, char **argv)
3939 {
3940         int ret = 0;
3941         int c;
3942         boolean_t force = B_FALSE;
3943         rollback_cbdata_t cb = { 0 };
3944         zfs_handle_t *zhp, *snap;
3945         char parentname[ZFS_MAX_DATASET_NAME_LEN];
3946         char *delim;
3947         uint64_t min_txg = 0;
3948
3949         /* check options */
3950         while ((c = getopt(argc, argv, "rRf")) != -1) {
3951                 switch (c) {
3952                 case 'r':
3953                         cb.cb_recurse = 1;
3954                         break;
3955                 case 'R':
3956                         cb.cb_recurse = 1;
3957                         cb.cb_doclones = 1;
3958                         break;
3959                 case 'f':
3960                         force = B_TRUE;
3961                         break;
3962                 case '?':
3963                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3964                             optopt);
3965                         usage(B_FALSE);
3966                 }
3967         }
3968
3969         argc -= optind;
3970         argv += optind;
3971
3972         /* check number of arguments */
3973         if (argc < 1) {
3974                 (void) fprintf(stderr, gettext("missing dataset argument\n"));
3975                 usage(B_FALSE);
3976         }
3977         if (argc > 1) {
3978                 (void) fprintf(stderr, gettext("too many arguments\n"));
3979                 usage(B_FALSE);
3980         }
3981
3982         /* open the snapshot */
3983         if ((snap = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
3984                 return (1);
3985
3986         /* open the parent dataset */
3987         (void) strlcpy(parentname, argv[0], sizeof (parentname));
3988         verify((delim = strrchr(parentname, '@')) != NULL);
3989         *delim = '\0';
3990         if ((zhp = zfs_open(g_zfs, parentname, ZFS_TYPE_DATASET)) == NULL) {
3991                 zfs_close(snap);
3992                 return (1);
3993         }
3994
3995         /*
3996          * Check for more recent snapshots and/or clones based on the presence
3997          * of '-r' and '-R'.
3998          */
3999         cb.cb_target = argv[0];
4000         cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG);
4001         cb.cb_first = B_TRUE;
4002         cb.cb_error = 0;
4003
4004         if (cb.cb_create > 0)
4005                 min_txg = cb.cb_create;
4006
4007         if ((ret = zfs_iter_snapshots(zhp, B_FALSE, rollback_check, &cb,
4008             min_txg, 0)) != 0)
4009                 goto out;
4010         if ((ret = zfs_iter_bookmarks(zhp, rollback_check, &cb)) != 0)
4011                 goto out;
4012
4013         if ((ret = cb.cb_error) != 0)
4014                 goto out;
4015
4016         /*
4017          * Rollback parent to the given snapshot.
4018          */
4019         ret = zfs_rollback(zhp, snap, force);
4020
4021 out:
4022         zfs_close(snap);
4023         zfs_close(zhp);
4024
4025         if (ret == 0)
4026                 return (0);
4027         else
4028                 return (1);
4029 }
4030
4031 /*
4032  * zfs set property=value ... { fs | snap | vol } ...
4033  *
4034  * Sets the given properties for all datasets specified on the command line.
4035  */
4036
4037 static int
4038 set_callback(zfs_handle_t *zhp, void *data)
4039 {
4040         nvlist_t *props = data;
4041
4042         if (zfs_prop_set_list(zhp, props) != 0) {
4043                 switch (libzfs_errno(g_zfs)) {
4044                 case EZFS_MOUNTFAILED:
4045                         (void) fprintf(stderr, gettext("property may be set "
4046                             "but unable to remount filesystem\n"));
4047                         break;
4048                 case EZFS_SHARENFSFAILED:
4049                         (void) fprintf(stderr, gettext("property may be set "
4050                             "but unable to reshare filesystem\n"));
4051                         break;
4052                 }
4053                 return (1);
4054         }
4055         return (0);
4056 }
4057
4058 static int
4059 zfs_do_set(int argc, char **argv)
4060 {
4061         nvlist_t *props = NULL;
4062         int ds_start = -1; /* argv idx of first dataset arg */
4063         int ret = 0;
4064         int i;
4065
4066         /* check for options */
4067         if (argc > 1 && argv[1][0] == '-') {
4068                 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
4069                     argv[1][1]);
4070                 usage(B_FALSE);
4071         }
4072
4073         /* check number of arguments */
4074         if (argc < 2) {
4075                 (void) fprintf(stderr, gettext("missing arguments\n"));
4076                 usage(B_FALSE);
4077         }
4078         if (argc < 3) {
4079                 if (strchr(argv[1], '=') == NULL) {
4080                         (void) fprintf(stderr, gettext("missing property=value "
4081                             "argument(s)\n"));
4082                 } else {
4083                         (void) fprintf(stderr, gettext("missing dataset "
4084                             "name(s)\n"));
4085                 }
4086                 usage(B_FALSE);
4087         }
4088
4089         /* validate argument order:  prop=val args followed by dataset args */
4090         for (i = 1; i < argc; i++) {
4091                 if (strchr(argv[i], '=') != NULL) {
4092                         if (ds_start > 0) {
4093                                 /* out-of-order prop=val argument */
4094                                 (void) fprintf(stderr, gettext("invalid "
4095                                     "argument order\n"));
4096                                 usage(B_FALSE);
4097                         }
4098                 } else if (ds_start < 0) {
4099                         ds_start = i;
4100                 }
4101         }
4102         if (ds_start < 0) {
4103                 (void) fprintf(stderr, gettext("missing dataset name(s)\n"));
4104                 usage(B_FALSE);
4105         }
4106
4107         /* Populate a list of property settings */
4108         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
4109                 nomem();
4110         for (i = 1; i < ds_start; i++) {
4111                 if (!parseprop(props, argv[i])) {
4112                         ret = -1;
4113                         goto error;
4114                 }
4115         }
4116
4117         ret = zfs_for_each(argc - ds_start, argv + ds_start, 0,
4118             ZFS_TYPE_DATASET, NULL, NULL, 0, set_callback, props);
4119
4120 error:
4121         nvlist_free(props);
4122         return (ret);
4123 }
4124
4125 typedef struct snap_cbdata {
4126         nvlist_t *sd_nvl;
4127         boolean_t sd_recursive;
4128         const char *sd_snapname;
4129 } snap_cbdata_t;
4130
4131 static int
4132 zfs_snapshot_cb(zfs_handle_t *zhp, void *arg)
4133 {
4134         snap_cbdata_t *sd = arg;
4135         char *name;
4136         int rv = 0;
4137         int error;
4138
4139         if (sd->sd_recursive &&
4140             zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) != 0) {
4141                 zfs_close(zhp);
4142                 return (0);
4143         }
4144
4145         error = asprintf(&name, "%s@%s", zfs_get_name(zhp), sd->sd_snapname);
4146         if (error == -1)
4147                 nomem();
4148         fnvlist_add_boolean(sd->sd_nvl, name);
4149         free(name);
4150
4151         if (sd->sd_recursive)
4152                 rv = zfs_iter_filesystems(zhp, zfs_snapshot_cb, sd);
4153         zfs_close(zhp);
4154         return (rv);
4155 }
4156
4157 /*
4158  * zfs snapshot [-r] [-o prop=value] ... <fs@snap>
4159  *
4160  * Creates a snapshot with the given name.  While functionally equivalent to
4161  * 'zfs create', it is a separate command to differentiate intent.
4162  */
4163 static int
4164 zfs_do_snapshot(int argc, char **argv)
4165 {
4166         int ret = 0;
4167         int c;
4168         nvlist_t *props;
4169         snap_cbdata_t sd = { 0 };
4170         boolean_t multiple_snaps = B_FALSE;
4171
4172         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
4173                 nomem();
4174         if (nvlist_alloc(&sd.sd_nvl, NV_UNIQUE_NAME, 0) != 0)
4175                 nomem();
4176
4177         /* check options */
4178         while ((c = getopt(argc, argv, "ro:")) != -1) {
4179                 switch (c) {
4180                 case 'o':
4181                         if (!parseprop(props, optarg)) {
4182                                 nvlist_free(sd.sd_nvl);
4183                                 nvlist_free(props);
4184                                 return (1);
4185                         }
4186                         break;
4187                 case 'r':
4188                         sd.sd_recursive = B_TRUE;
4189                         multiple_snaps = B_TRUE;
4190                         break;
4191                 case '?':
4192                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
4193                             optopt);
4194                         goto usage;
4195                 }
4196         }
4197
4198         argc -= optind;
4199         argv += optind;
4200
4201         /* check number of arguments */
4202         if (argc < 1) {
4203                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
4204                 goto usage;
4205         }
4206
4207         if (argc > 1)
4208                 multiple_snaps = B_TRUE;
4209         for (; argc > 0; argc--, argv++) {
4210                 char *atp;
4211                 zfs_handle_t *zhp;
4212
4213                 atp = strchr(argv[0], '@');
4214                 if (atp == NULL)
4215                         goto usage;
4216                 *atp = '\0';
4217                 sd.sd_snapname = atp + 1;
4218                 zhp = zfs_open(g_zfs, argv[0],
4219                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
4220                 if (zhp == NULL)
4221                         goto usage;
4222                 if (zfs_snapshot_cb(zhp, &sd) != 0)
4223                         goto usage;
4224         }
4225
4226         ret = zfs_snapshot_nvl(g_zfs, sd.sd_nvl, props);
4227         nvlist_free(sd.sd_nvl);
4228         nvlist_free(props);
4229         if (ret != 0 && multiple_snaps)
4230                 (void) fprintf(stderr, gettext("no snapshots were created\n"));
4231         return (ret != 0);
4232
4233 usage:
4234         nvlist_free(sd.sd_nvl);
4235         nvlist_free(props);
4236         usage(B_FALSE);
4237         return (-1);
4238 }
4239
4240
4241 /*
4242  * Send a backup stream to stdout.
4243  */
4244 static int
4245 zfs_do_send(int argc, char **argv)
4246 {
4247         char *fromname = NULL;
4248         char *toname = NULL;
4249         char *resume_token = NULL;
4250         char *cp;
4251         zfs_handle_t *zhp;
4252         sendflags_t flags = { 0 };
4253         int c, err;
4254         nvlist_t *dbgnv = NULL;
4255         char *redactbook = NULL;
4256
4257         struct option long_options[] = {
4258                 {"replicate",   no_argument,            NULL, 'R'},
4259                 {"redact",      required_argument,      NULL, 'd'},
4260                 {"props",       no_argument,            NULL, 'p'},
4261                 {"parsable",    no_argument,            NULL, 'P'},
4262                 {"dedup",       no_argument,            NULL, 'D'},
4263                 {"verbose",     no_argument,            NULL, 'v'},
4264                 {"dryrun",      no_argument,            NULL, 'n'},
4265                 {"large-block", no_argument,            NULL, 'L'},
4266                 {"embed",       no_argument,            NULL, 'e'},
4267                 {"resume",      required_argument,      NULL, 't'},
4268                 {"compressed",  no_argument,            NULL, 'c'},
4269                 {"raw",         no_argument,            NULL, 'w'},
4270                 {"backup",      no_argument,            NULL, 'b'},
4271                 {"holds",       no_argument,            NULL, 'h'},
4272                 {"saved",       no_argument,            NULL, 'S'},
4273                 {0, 0, 0, 0}
4274         };
4275
4276         /* check options */
4277         while ((c = getopt_long(argc, argv, ":i:I:RDpvnPLeht:cwbd:S",
4278             long_options, NULL)) != -1) {
4279                 switch (c) {
4280                 case 'i':
4281                         if (fromname)
4282                                 usage(B_FALSE);
4283                         fromname = optarg;
4284                         break;
4285                 case 'I':
4286                         if (fromname)
4287                                 usage(B_FALSE);
4288                         fromname = optarg;
4289                         flags.doall = B_TRUE;
4290                         break;
4291                 case 'R':
4292                         flags.replicate = B_TRUE;
4293                         break;
4294                 case 'd':
4295                         redactbook = optarg;
4296                         break;
4297                 case 'p':
4298                         flags.props = B_TRUE;
4299                         break;
4300                 case 'b':
4301                         flags.backup = B_TRUE;
4302                         break;
4303                 case 'h':
4304                         flags.holds = B_TRUE;
4305                         break;
4306                 case 'P':
4307                         flags.parsable = B_TRUE;
4308                         break;
4309                 case 'v':
4310                         flags.verbosity++;
4311                         flags.progress = B_TRUE;
4312                         break;
4313                 case 'D':
4314                         (void) fprintf(stderr,
4315                             gettext("WARNING: deduplicated send is no "
4316                             "longer supported.  A regular,\n"
4317                             "non-deduplicated stream will be generated.\n\n"));
4318                         break;
4319                 case 'n':
4320                         flags.dryrun = B_TRUE;
4321                         break;
4322                 case 'L':
4323                         flags.largeblock = B_TRUE;
4324                         break;
4325                 case 'e':
4326                         flags.embed_data = B_TRUE;
4327                         break;
4328                 case 't':
4329                         resume_token = optarg;
4330                         break;
4331                 case 'c':
4332                         flags.compress = B_TRUE;
4333                         break;
4334                 case 'w':
4335                         flags.raw = B_TRUE;
4336                         flags.compress = B_TRUE;
4337                         flags.embed_data = B_TRUE;
4338                         flags.largeblock = B_TRUE;
4339                         break;
4340                 case 'S':
4341                         flags.saved = B_TRUE;
4342                         break;
4343                 case ':':
4344                         /*
4345                          * If a parameter was not passed, optopt contains the
4346                          * value that would normally lead us into the
4347                          * appropriate case statement.  If it's > 256, then this
4348                          * must be a longopt and we should look at argv to get
4349                          * the string.  Otherwise it's just the character, so we
4350                          * should use it directly.
4351                          */
4352                         if (optopt <= UINT8_MAX) {
4353                                 (void) fprintf(stderr,
4354                                     gettext("missing argument for '%c' "
4355                                     "option\n"), optopt);
4356                         } else {
4357                                 (void) fprintf(stderr,
4358                                     gettext("missing argument for '%s' "
4359                                     "option\n"), argv[optind - 1]);
4360                         }
4361                         usage(B_FALSE);
4362                         break;
4363                 case '?':
4364                         /*FALLTHROUGH*/
4365                 default:
4366                         /*
4367                          * If an invalid flag was passed, optopt contains the
4368                          * character if it was a short flag, or 0 if it was a
4369                          * longopt.
4370                          */
4371                         if (optopt != 0) {
4372                                 (void) fprintf(stderr,
4373                                     gettext("invalid option '%c'\n"), optopt);
4374                         } else {
4375                                 (void) fprintf(stderr,
4376                                     gettext("invalid option '%s'\n"),
4377                                     argv[optind - 1]);
4378
4379                         }
4380                         usage(B_FALSE);
4381                 }
4382         }
4383
4384         if (flags.parsable && flags.verbosity == 0)
4385                 flags.verbosity = 1;
4386
4387         argc -= optind;
4388         argv += optind;
4389
4390         if (resume_token != NULL) {
4391                 if (fromname != NULL || flags.replicate || flags.props ||
4392                     flags.backup || flags.holds ||
4393                     flags.saved || redactbook != NULL) {
4394                         (void) fprintf(stderr,
4395                             gettext("invalid flags combined with -t\n"));
4396                         usage(B_FALSE);
4397                 }
4398                 if (argc > 0) {
4399                         (void) fprintf(stderr, gettext("too many arguments\n"));
4400                         usage(B_FALSE);
4401                 }
4402         } else {
4403                 if (argc < 1) {
4404                         (void) fprintf(stderr,
4405                             gettext("missing snapshot argument\n"));
4406                         usage(B_FALSE);
4407                 }
4408                 if (argc > 1) {
4409                         (void) fprintf(stderr, gettext("too many arguments\n"));
4410                         usage(B_FALSE);
4411                 }
4412         }
4413
4414         if (flags.saved) {
4415                 if (fromname != NULL || flags.replicate || flags.props ||
4416                     flags.doall || flags.backup ||
4417                     flags.holds || flags.largeblock || flags.embed_data ||
4418                     flags.compress || flags.raw || redactbook != NULL) {
4419                         (void) fprintf(stderr, gettext("incompatible flags "
4420                             "combined with saved send flag\n"));
4421                         usage(B_FALSE);
4422                 }
4423                 if (strchr(argv[0], '@') != NULL) {
4424                         (void) fprintf(stderr, gettext("saved send must "
4425                             "specify the dataset with partially-received "
4426                             "state\n"));
4427                         usage(B_FALSE);
4428                 }
4429         }
4430
4431         if (flags.raw && redactbook != NULL) {
4432                 (void) fprintf(stderr,
4433                     gettext("Error: raw sends may not be redacted.\n"));
4434                 return (1);
4435         }
4436
4437         if (!flags.dryrun && isatty(STDOUT_FILENO)) {
4438                 (void) fprintf(stderr,
4439                     gettext("Error: Stream can not be written to a terminal.\n"
4440                     "You must redirect standard output.\n"));
4441                 return (1);
4442         }
4443
4444         if (flags.saved) {
4445                 zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET);
4446                 if (zhp == NULL)
4447                         return (1);
4448
4449                 err = zfs_send_saved(zhp, &flags, STDOUT_FILENO,
4450                     resume_token);
4451                 zfs_close(zhp);
4452                 return (err != 0);
4453         } else if (resume_token != NULL) {
4454                 return (zfs_send_resume(g_zfs, &flags, STDOUT_FILENO,
4455                     resume_token));
4456         }
4457
4458         /*
4459          * For everything except -R and -I, use the new, cleaner code path.
4460          */
4461         if (!(flags.replicate || flags.doall)) {
4462                 char frombuf[ZFS_MAX_DATASET_NAME_LEN];
4463
4464                 if (fromname != NULL && (strchr(fromname, '#') == NULL &&
4465                     strchr(fromname, '@') == NULL)) {
4466                         /*
4467                          * Neither bookmark or snapshot was specified.  Print a
4468                          * warning, and assume snapshot.
4469                          */
4470                         (void) fprintf(stderr, "Warning: incremental source "
4471                             "didn't specify type, assuming snapshot. Use '@' "
4472                             "or '#' prefix to avoid ambiguity.\n");
4473                         (void) snprintf(frombuf, sizeof (frombuf), "@%s",
4474                             fromname);
4475                         fromname = frombuf;
4476                 }
4477                 if (fromname != NULL &&
4478                     (fromname[0] == '#' || fromname[0] == '@')) {
4479                         /*
4480                          * Incremental source name begins with # or @.
4481                          * Default to same fs as target.
4482                          */
4483                         char tmpbuf[ZFS_MAX_DATASET_NAME_LEN];
4484                         (void) strlcpy(tmpbuf, fromname, sizeof (tmpbuf));
4485                         (void) strlcpy(frombuf, argv[0], sizeof (frombuf));
4486                         cp = strchr(frombuf, '@');
4487                         if (cp != NULL)
4488                                 *cp = '\0';
4489                         (void) strlcat(frombuf, tmpbuf, sizeof (frombuf));
4490                         fromname = frombuf;
4491                 }
4492
4493                 zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET);
4494                 if (zhp == NULL)
4495                         return (1);
4496                 err = zfs_send_one(zhp, fromname, STDOUT_FILENO, &flags,
4497                     redactbook);
4498                 zfs_close(zhp);
4499                 return (err != 0);
4500         }
4501
4502         if (fromname != NULL && strchr(fromname, '#')) {
4503                 (void) fprintf(stderr,
4504                     gettext("Error: multiple snapshots cannot be "
4505                     "sent from a bookmark.\n"));
4506                 return (1);
4507         }
4508
4509         if (redactbook != NULL) {
4510                 (void) fprintf(stderr, gettext("Error: multiple snapshots "
4511                     "cannot be sent redacted.\n"));
4512                 return (1);
4513         }
4514
4515         if ((cp = strchr(argv[0], '@')) == NULL) {
4516                 (void) fprintf(stderr, gettext("Error: "
4517                     "Unsupported flag with filesystem or bookmark.\n"));
4518                 return (1);
4519         }
4520         *cp = '\0';
4521         toname = cp + 1;
4522         zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
4523         if (zhp == NULL)
4524                 return (1);
4525
4526         /*
4527          * If they specified the full path to the snapshot, chop off
4528          * everything except the short name of the snapshot, but special
4529          * case if they specify the origin.
4530          */
4531         if (fromname && (cp = strchr(fromname, '@')) != NULL) {
4532                 char origin[ZFS_MAX_DATASET_NAME_LEN];
4533                 zprop_source_t src;
4534
4535                 (void) zfs_prop_get(zhp, ZFS_PROP_ORIGIN,
4536                     origin, sizeof (origin), &src, NULL, 0, B_FALSE);
4537
4538                 if (strcmp(origin, fromname) == 0) {
4539                         fromname = NULL;
4540                         flags.fromorigin = B_TRUE;
4541                 } else {
4542                         *cp = '\0';
4543                         if (cp != fromname && strcmp(argv[0], fromname)) {
4544                                 (void) fprintf(stderr,
4545                                     gettext("incremental source must be "
4546                                     "in same filesystem\n"));
4547                                 usage(B_FALSE);
4548                         }
4549                         fromname = cp + 1;
4550                         if (strchr(fromname, '@') || strchr(fromname, '/')) {
4551                                 (void) fprintf(stderr,
4552                                     gettext("invalid incremental source\n"));
4553                                 usage(B_FALSE);
4554                         }
4555                 }
4556         }
4557
4558         if (flags.replicate && fromname == NULL)
4559                 flags.doall = B_TRUE;
4560
4561         err = zfs_send(zhp, fromname, toname, &flags, STDOUT_FILENO, NULL, 0,
4562             flags.verbosity >= 3 ? &dbgnv : NULL);
4563
4564         if (flags.verbosity >= 3 && dbgnv != NULL) {
4565                 /*
4566                  * dump_nvlist prints to stdout, but that's been
4567                  * redirected to a file.  Make it print to stderr
4568                  * instead.
4569                  */
4570                 (void) dup2(STDERR_FILENO, STDOUT_FILENO);
4571                 dump_nvlist(dbgnv, 0);
4572                 nvlist_free(dbgnv);
4573         }
4574         zfs_close(zhp);
4575
4576         return (err != 0);
4577 }
4578
4579 /*
4580  * Restore a backup stream from stdin.
4581  */
4582 static int
4583 zfs_do_receive(int argc, char **argv)
4584 {
4585         int c, err = 0;
4586         recvflags_t flags = { 0 };
4587         boolean_t abort_resumable = B_FALSE;
4588         nvlist_t *props;
4589
4590         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
4591                 nomem();
4592
4593         /* check options */
4594         while ((c = getopt(argc, argv, ":o:x:dehMnuvFsA")) != -1) {
4595                 switch (c) {
4596                 case 'o':
4597                         if (!parseprop(props, optarg)) {
4598                                 nvlist_free(props);
4599                                 usage(B_FALSE);
4600                         }
4601                         break;
4602                 case 'x':
4603                         if (!parsepropname(props, optarg)) {
4604                                 nvlist_free(props);
4605                                 usage(B_FALSE);
4606                         }
4607                         break;
4608                 case 'd':
4609                         if (flags.istail) {
4610                                 (void) fprintf(stderr, gettext("invalid option "
4611                                     "combination: -d and -e are mutually "
4612                                     "exclusive\n"));
4613                                 usage(B_FALSE);
4614                         }
4615                         flags.isprefix = B_TRUE;
4616                         break;
4617                 case 'e':
4618                         if (flags.isprefix) {
4619                                 (void) fprintf(stderr, gettext("invalid option "
4620                                     "combination: -d and -e are mutually "
4621                                     "exclusive\n"));
4622                                 usage(B_FALSE);
4623                         }
4624                         flags.istail = B_TRUE;
4625                         break;
4626                 case 'h':
4627                         flags.skipholds = B_TRUE;
4628                         break;
4629                 case 'M':
4630                         flags.forceunmount = B_TRUE;
4631                         break;
4632                 case 'n':
4633                         flags.dryrun = B_TRUE;
4634                         break;
4635                 case 'u':
4636                         flags.nomount = B_TRUE;
4637                         break;
4638                 case 'v':
4639                         flags.verbose = B_TRUE;
4640                         break;
4641                 case 's':
4642                         flags.resumable = B_TRUE;
4643                         break;
4644                 case 'F':
4645                         flags.force = B_TRUE;
4646                         break;
4647                 case 'A':
4648                         abort_resumable = B_TRUE;
4649                         break;
4650                 case ':':
4651                         (void) fprintf(stderr, gettext("missing argument for "
4652                             "'%c' option\n"), optopt);
4653                         usage(B_FALSE);
4654                         break;
4655                 case '?':
4656                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
4657                             optopt);
4658                         usage(B_FALSE);
4659                 }
4660         }
4661
4662         argc -= optind;
4663         argv += optind;
4664
4665         /* zfs recv -e (use "tail" name) implies -d (remove dataset "head") */
4666         if (flags.istail)
4667                 flags.isprefix = B_TRUE;
4668
4669         /* check number of arguments */
4670         if (argc < 1) {
4671                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
4672                 usage(B_FALSE);
4673         }
4674         if (argc > 1) {
4675                 (void) fprintf(stderr, gettext("too many arguments\n"));
4676                 usage(B_FALSE);
4677         }
4678
4679         if (abort_resumable) {
4680                 if (flags.isprefix || flags.istail || flags.dryrun ||
4681                     flags.resumable || flags.nomount) {
4682                         (void) fprintf(stderr, gettext("invalid option\n"));
4683                         usage(B_FALSE);
4684                 }
4685
4686                 char namebuf[ZFS_MAX_DATASET_NAME_LEN];
4687                 (void) snprintf(namebuf, sizeof (namebuf),
4688                     "%s/%%recv", argv[0]);
4689
4690                 if (zfs_dataset_exists(g_zfs, namebuf,
4691                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME)) {
4692                         zfs_handle_t *zhp = zfs_open(g_zfs,
4693                             namebuf, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
4694                         if (zhp == NULL) {
4695                                 nvlist_free(props);
4696                                 return (1);
4697                         }
4698                         err = zfs_destroy(zhp, B_FALSE);
4699                         zfs_close(zhp);
4700                 } else {
4701                         zfs_handle_t *zhp = zfs_open(g_zfs,
4702                             argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
4703                         if (zhp == NULL)
4704                                 usage(B_FALSE);
4705                         if (!zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) ||
4706                             zfs_prop_get(zhp, ZFS_PROP_RECEIVE_RESUME_TOKEN,
4707                             NULL, 0, NULL, NULL, 0, B_TRUE) == -1) {
4708                                 (void) fprintf(stderr,
4709                                     gettext("'%s' does not have any "
4710                                     "resumable receive state to abort\n"),
4711                                     argv[0]);
4712                                 nvlist_free(props);
4713                                 zfs_close(zhp);
4714                                 return (1);
4715                         }
4716                         err = zfs_destroy(zhp, B_FALSE);
4717                         zfs_close(zhp);
4718                 }
4719                 nvlist_free(props);
4720                 return (err != 0);
4721         }
4722
4723         if (isatty(STDIN_FILENO)) {
4724                 (void) fprintf(stderr,
4725                     gettext("Error: Backup stream can not be read "
4726                     "from a terminal.\n"
4727                     "You must redirect standard input.\n"));
4728                 nvlist_free(props);
4729                 return (1);
4730         }
4731         err = zfs_receive(g_zfs, argv[0], props, &flags, STDIN_FILENO, NULL);
4732         nvlist_free(props);
4733
4734         return (err != 0);
4735 }
4736
4737 /*
4738  * allow/unallow stuff
4739  */
4740 /* copied from zfs/sys/dsl_deleg.h */
4741 #define ZFS_DELEG_PERM_CREATE           "create"
4742 #define ZFS_DELEG_PERM_DESTROY          "destroy"
4743 #define ZFS_DELEG_PERM_SNAPSHOT         "snapshot"
4744 #define ZFS_DELEG_PERM_ROLLBACK         "rollback"
4745 #define ZFS_DELEG_PERM_CLONE            "clone"
4746 #define ZFS_DELEG_PERM_PROMOTE          "promote"
4747 #define ZFS_DELEG_PERM_RENAME           "rename"
4748 #define ZFS_DELEG_PERM_MOUNT            "mount"
4749 #define ZFS_DELEG_PERM_SHARE            "share"
4750 #define ZFS_DELEG_PERM_SEND             "send"
4751 #define ZFS_DELEG_PERM_RECEIVE          "receive"
4752 #define ZFS_DELEG_PERM_ALLOW            "allow"
4753 #define ZFS_DELEG_PERM_USERPROP         "userprop"
4754 #define ZFS_DELEG_PERM_VSCAN            "vscan" /* ??? */
4755 #define ZFS_DELEG_PERM_USERQUOTA        "userquota"
4756 #define ZFS_DELEG_PERM_GROUPQUOTA       "groupquota"
4757 #define ZFS_DELEG_PERM_USERUSED         "userused"
4758 #define ZFS_DELEG_PERM_GROUPUSED        "groupused"
4759 #define ZFS_DELEG_PERM_USEROBJQUOTA     "userobjquota"
4760 #define ZFS_DELEG_PERM_GROUPOBJQUOTA    "groupobjquota"
4761 #define ZFS_DELEG_PERM_USEROBJUSED      "userobjused"
4762 #define ZFS_DELEG_PERM_GROUPOBJUSED     "groupobjused"
4763
4764 #define ZFS_DELEG_PERM_HOLD             "hold"
4765 #define ZFS_DELEG_PERM_RELEASE          "release"
4766 #define ZFS_DELEG_PERM_DIFF             "diff"
4767 #define ZFS_DELEG_PERM_BOOKMARK         "bookmark"
4768 #define ZFS_DELEG_PERM_LOAD_KEY         "load-key"
4769 #define ZFS_DELEG_PERM_CHANGE_KEY       "change-key"
4770
4771 #define ZFS_DELEG_PERM_PROJECTUSED      "projectused"
4772 #define ZFS_DELEG_PERM_PROJECTQUOTA     "projectquota"
4773 #define ZFS_DELEG_PERM_PROJECTOBJUSED   "projectobjused"
4774 #define ZFS_DELEG_PERM_PROJECTOBJQUOTA  "projectobjquota"
4775
4776 #define ZFS_NUM_DELEG_NOTES ZFS_DELEG_NOTE_NONE
4777
4778 static zfs_deleg_perm_tab_t zfs_deleg_perm_tbl[] = {
4779         { ZFS_DELEG_PERM_ALLOW, ZFS_DELEG_NOTE_ALLOW },
4780         { ZFS_DELEG_PERM_CLONE, ZFS_DELEG_NOTE_CLONE },
4781         { ZFS_DELEG_PERM_CREATE, ZFS_DELEG_NOTE_CREATE },
4782         { ZFS_DELEG_PERM_DESTROY, ZFS_DELEG_NOTE_DESTROY },
4783         { ZFS_DELEG_PERM_DIFF, ZFS_DELEG_NOTE_DIFF},
4784         { ZFS_DELEG_PERM_HOLD, ZFS_DELEG_NOTE_HOLD },
4785         { ZFS_DELEG_PERM_MOUNT, ZFS_DELEG_NOTE_MOUNT },
4786         { ZFS_DELEG_PERM_PROMOTE, ZFS_DELEG_NOTE_PROMOTE },
4787         { ZFS_DELEG_PERM_RECEIVE, ZFS_DELEG_NOTE_RECEIVE },
4788         { ZFS_DELEG_PERM_RELEASE, ZFS_DELEG_NOTE_RELEASE },
4789         { ZFS_DELEG_PERM_RENAME, ZFS_DELEG_NOTE_RENAME },
4790         { ZFS_DELEG_PERM_ROLLBACK, ZFS_DELEG_NOTE_ROLLBACK },
4791         { ZFS_DELEG_PERM_SEND, ZFS_DELEG_NOTE_SEND },
4792         { ZFS_DELEG_PERM_SHARE, ZFS_DELEG_NOTE_SHARE },
4793         { ZFS_DELEG_PERM_SNAPSHOT, ZFS_DELEG_NOTE_SNAPSHOT },
4794         { ZFS_DELEG_PERM_BOOKMARK, ZFS_DELEG_NOTE_BOOKMARK },
4795         { ZFS_DELEG_PERM_LOAD_KEY, ZFS_DELEG_NOTE_LOAD_KEY },
4796         { ZFS_DELEG_PERM_CHANGE_KEY, ZFS_DELEG_NOTE_CHANGE_KEY },
4797
4798         { ZFS_DELEG_PERM_GROUPQUOTA, ZFS_DELEG_NOTE_GROUPQUOTA },
4799         { ZFS_DELEG_PERM_GROUPUSED, ZFS_DELEG_NOTE_GROUPUSED },
4800         { ZFS_DELEG_PERM_USERPROP, ZFS_DELEG_NOTE_USERPROP },
4801         { ZFS_DELEG_PERM_USERQUOTA, ZFS_DELEG_NOTE_USERQUOTA },
4802         { ZFS_DELEG_PERM_USERUSED, ZFS_DELEG_NOTE_USERUSED },
4803         { ZFS_DELEG_PERM_USEROBJQUOTA, ZFS_DELEG_NOTE_USEROBJQUOTA },
4804         { ZFS_DELEG_PERM_USEROBJUSED, ZFS_DELEG_NOTE_USEROBJUSED },
4805         { ZFS_DELEG_PERM_GROUPOBJQUOTA, ZFS_DELEG_NOTE_GROUPOBJQUOTA },
4806         { ZFS_DELEG_PERM_GROUPOBJUSED, ZFS_DELEG_NOTE_GROUPOBJUSED },
4807         { ZFS_DELEG_PERM_PROJECTUSED, ZFS_DELEG_NOTE_PROJECTUSED },
4808         { ZFS_DELEG_PERM_PROJECTQUOTA, ZFS_DELEG_NOTE_PROJECTQUOTA },
4809         { ZFS_DELEG_PERM_PROJECTOBJUSED, ZFS_DELEG_NOTE_PROJECTOBJUSED },
4810         { ZFS_DELEG_PERM_PROJECTOBJQUOTA, ZFS_DELEG_NOTE_PROJECTOBJQUOTA },
4811         { NULL, ZFS_DELEG_NOTE_NONE }
4812 };
4813
4814 /* permission structure */
4815 typedef struct deleg_perm {
4816         zfs_deleg_who_type_t    dp_who_type;
4817         const char              *dp_name;
4818         boolean_t               dp_local;
4819         boolean_t               dp_descend;
4820 } deleg_perm_t;
4821
4822 /* */
4823 typedef struct deleg_perm_node {
4824         deleg_perm_t            dpn_perm;
4825
4826         uu_avl_node_t           dpn_avl_node;
4827 } deleg_perm_node_t;
4828
4829 typedef struct fs_perm fs_perm_t;
4830
4831 /* permissions set */
4832 typedef struct who_perm {
4833         zfs_deleg_who_type_t    who_type;
4834         const char              *who_name;              /* id */
4835         char                    who_ug_name[256];       /* user/group name */
4836         fs_perm_t               *who_fsperm;            /* uplink */
4837
4838         uu_avl_t                *who_deleg_perm_avl;    /* permissions */
4839 } who_perm_t;
4840
4841 /* */
4842 typedef struct who_perm_node {
4843         who_perm_t      who_perm;
4844         uu_avl_node_t   who_avl_node;
4845 } who_perm_node_t;
4846
4847 typedef struct fs_perm_set fs_perm_set_t;
4848 /* fs permissions */
4849 struct fs_perm {
4850         const char              *fsp_name;
4851
4852         uu_avl_t                *fsp_sc_avl;    /* sets,create */
4853         uu_avl_t                *fsp_uge_avl;   /* user,group,everyone */
4854
4855         fs_perm_set_t           *fsp_set;       /* uplink */
4856 };
4857
4858 /* */
4859 typedef struct fs_perm_node {
4860         fs_perm_t       fspn_fsperm;
4861         uu_avl_t        *fspn_avl;
4862
4863         uu_list_node_t  fspn_list_node;
4864 } fs_perm_node_t;
4865
4866 /* top level structure */
4867 struct fs_perm_set {
4868         uu_list_pool_t  *fsps_list_pool;
4869         uu_list_t       *fsps_list; /* list of fs_perms */
4870
4871         uu_avl_pool_t   *fsps_named_set_avl_pool;
4872         uu_avl_pool_t   *fsps_who_perm_avl_pool;
4873         uu_avl_pool_t   *fsps_deleg_perm_avl_pool;
4874 };
4875
4876 static inline const char *
4877 deleg_perm_type(zfs_deleg_note_t note)
4878 {
4879         /* subcommands */
4880         switch (note) {
4881                 /* SUBCOMMANDS */
4882                 /* OTHER */
4883         case ZFS_DELEG_NOTE_GROUPQUOTA:
4884         case ZFS_DELEG_NOTE_GROUPUSED:
4885         case ZFS_DELEG_NOTE_USERPROP:
4886         case ZFS_DELEG_NOTE_USERQUOTA:
4887         case ZFS_DELEG_NOTE_USERUSED:
4888         case ZFS_DELEG_NOTE_USEROBJQUOTA:
4889         case ZFS_DELEG_NOTE_USEROBJUSED:
4890         case ZFS_DELEG_NOTE_GROUPOBJQUOTA:
4891         case ZFS_DELEG_NOTE_GROUPOBJUSED:
4892         case ZFS_DELEG_NOTE_PROJECTUSED:
4893         case ZFS_DELEG_NOTE_PROJECTQUOTA:
4894         case ZFS_DELEG_NOTE_PROJECTOBJUSED:
4895         case ZFS_DELEG_NOTE_PROJECTOBJQUOTA:
4896                 /* other */
4897                 return (gettext("other"));
4898         default:
4899                 return (gettext("subcommand"));
4900         }
4901 }
4902
4903 static int
4904 who_type2weight(zfs_deleg_who_type_t who_type)
4905 {
4906         int res;
4907         switch (who_type) {
4908                 case ZFS_DELEG_NAMED_SET_SETS:
4909                 case ZFS_DELEG_NAMED_SET:
4910                         res = 0;
4911                         break;
4912                 case ZFS_DELEG_CREATE_SETS:
4913                 case ZFS_DELEG_CREATE:
4914                         res = 1;
4915                         break;
4916                 case ZFS_DELEG_USER_SETS:
4917                 case ZFS_DELEG_USER:
4918                         res = 2;
4919                         break;
4920                 case ZFS_DELEG_GROUP_SETS:
4921                 case ZFS_DELEG_GROUP:
4922                         res = 3;
4923                         break;
4924                 case ZFS_DELEG_EVERYONE_SETS:
4925                 case ZFS_DELEG_EVERYONE:
4926                         res = 4;
4927                         break;
4928                 default:
4929                         res = -1;
4930         }
4931
4932         return (res);
4933 }
4934
4935 /* ARGSUSED */
4936 static int
4937 who_perm_compare(const void *larg, const void *rarg, void *unused)
4938 {
4939         const who_perm_node_t *l = larg;
4940         const who_perm_node_t *r = rarg;
4941         zfs_deleg_who_type_t ltype = l->who_perm.who_type;
4942         zfs_deleg_who_type_t rtype = r->who_perm.who_type;
4943         int lweight = who_type2weight(ltype);
4944         int rweight = who_type2weight(rtype);
4945         int res = lweight - rweight;
4946         if (res == 0)
4947                 res = strncmp(l->who_perm.who_name, r->who_perm.who_name,
4948                     ZFS_MAX_DELEG_NAME-1);
4949
4950         if (res == 0)
4951                 return (0);
4952         if (res > 0)
4953                 return (1);
4954         else
4955                 return (-1);
4956 }
4957
4958 /* ARGSUSED */
4959 static int
4960 deleg_perm_compare(const void *larg, const void *rarg, void *unused)
4961 {
4962         const deleg_perm_node_t *l = larg;
4963         const deleg_perm_node_t *r = rarg;
4964         int res =  strncmp(l->dpn_perm.dp_name, r->dpn_perm.dp_name,
4965             ZFS_MAX_DELEG_NAME-1);
4966
4967         if (res == 0)
4968                 return (0);
4969
4970         if (res > 0)
4971                 return (1);
4972         else
4973                 return (-1);
4974 }
4975
4976 static inline void
4977 fs_perm_set_init(fs_perm_set_t *fspset)
4978 {
4979         bzero(fspset, sizeof (fs_perm_set_t));
4980
4981         if ((fspset->fsps_list_pool = uu_list_pool_create("fsps_list_pool",
4982             sizeof (fs_perm_node_t), offsetof(fs_perm_node_t, fspn_list_node),
4983             NULL, UU_DEFAULT)) == NULL)
4984                 nomem();
4985         if ((fspset->fsps_list = uu_list_create(fspset->fsps_list_pool, NULL,
4986             UU_DEFAULT)) == NULL)
4987                 nomem();
4988
4989         if ((fspset->fsps_named_set_avl_pool = uu_avl_pool_create(
4990             "named_set_avl_pool", sizeof (who_perm_node_t), offsetof(
4991             who_perm_node_t, who_avl_node), who_perm_compare,
4992             UU_DEFAULT)) == NULL)
4993                 nomem();
4994
4995         if ((fspset->fsps_who_perm_avl_pool = uu_avl_pool_create(
4996             "who_perm_avl_pool", sizeof (who_perm_node_t), offsetof(
4997             who_perm_node_t, who_avl_node), who_perm_compare,
4998             UU_DEFAULT)) == NULL)
4999                 nomem();
5000
5001         if ((fspset->fsps_deleg_perm_avl_pool = uu_avl_pool_create(
5002             "deleg_perm_avl_pool", sizeof (deleg_perm_node_t), offsetof(
5003             deleg_perm_node_t, dpn_avl_node), deleg_perm_compare, UU_DEFAULT))
5004             == NULL)
5005                 nomem();
5006 }
5007
5008 static inline void fs_perm_fini(fs_perm_t *);
5009 static inline void who_perm_fini(who_perm_t *);
5010
5011 static inline void
5012 fs_perm_set_fini(fs_perm_set_t *fspset)
5013 {
5014         fs_perm_node_t *node = uu_list_first(fspset->fsps_list);
5015
5016         while (node != NULL) {
5017                 fs_perm_node_t *next_node =
5018                     uu_list_next(fspset->fsps_list, node);
5019                 fs_perm_t *fsperm = &node->fspn_fsperm;
5020                 fs_perm_fini(fsperm);
5021                 uu_list_remove(fspset->fsps_list, node);
5022                 free(node);
5023                 node = next_node;
5024         }
5025
5026         uu_avl_pool_destroy(fspset->fsps_named_set_avl_pool);
5027         uu_avl_pool_destroy(fspset->fsps_who_perm_avl_pool);
5028         uu_avl_pool_destroy(fspset->fsps_deleg_perm_avl_pool);
5029 }
5030
5031 static inline void
5032 deleg_perm_init(deleg_perm_t *deleg_perm, zfs_deleg_who_type_t type,
5033     const char *name)
5034 {
5035         deleg_perm->dp_who_type = type;
5036         deleg_perm->dp_name = name;
5037 }
5038
5039 static inline void
5040 who_perm_init(who_perm_t *who_perm, fs_perm_t *fsperm,
5041     zfs_deleg_who_type_t type, const char *name)
5042 {
5043         uu_avl_pool_t   *pool;
5044         pool = fsperm->fsp_set->fsps_deleg_perm_avl_pool;
5045
5046         bzero(who_perm, sizeof (who_perm_t));
5047
5048         if ((who_perm->who_deleg_perm_avl = uu_avl_create(pool, NULL,
5049             UU_DEFAULT)) == NULL)
5050                 nomem();
5051
5052         who_perm->who_type = type;
5053         who_perm->who_name = name;
5054         who_perm->who_fsperm = fsperm;
5055 }
5056
5057 static inline void
5058 who_perm_fini(who_perm_t *who_perm)
5059 {
5060         deleg_perm_node_t *node = uu_avl_first(who_perm->who_deleg_perm_avl);
5061
5062         while (node != NULL) {
5063                 deleg_perm_node_t *next_node =
5064                     uu_avl_next(who_perm->who_deleg_perm_avl, node);
5065
5066                 uu_avl_remove(who_perm->who_deleg_perm_avl, node);
5067                 free(node);
5068                 node = next_node;
5069         }
5070
5071         uu_avl_destroy(who_perm->who_deleg_perm_avl);
5072 }
5073
5074 static inline void
5075 fs_perm_init(fs_perm_t *fsperm, fs_perm_set_t *fspset, const char *fsname)
5076 {
5077         uu_avl_pool_t   *nset_pool = fspset->fsps_named_set_avl_pool;
5078         uu_avl_pool_t   *who_pool = fspset->fsps_who_perm_avl_pool;
5079
5080         bzero(fsperm, sizeof (fs_perm_t));
5081
5082         if ((fsperm->fsp_sc_avl = uu_avl_create(nset_pool, NULL, UU_DEFAULT))
5083             == NULL)
5084                 nomem();
5085
5086         if ((fsperm->fsp_uge_avl = uu_avl_create(who_pool, NULL, UU_DEFAULT))
5087             == NULL)
5088                 nomem();
5089
5090         fsperm->fsp_set = fspset;
5091         fsperm->fsp_name = fsname;
5092 }
5093
5094 static inline void
5095 fs_perm_fini(fs_perm_t *fsperm)
5096 {
5097         who_perm_node_t *node = uu_avl_first(fsperm->fsp_sc_avl);
5098         while (node != NULL) {
5099                 who_perm_node_t *next_node = uu_avl_next(fsperm->fsp_sc_avl,
5100                     node);
5101                 who_perm_t *who_perm = &node->who_perm;
5102                 who_perm_fini(who_perm);
5103                 uu_avl_remove(fsperm->fsp_sc_avl, node);
5104                 free(node);
5105                 node = next_node;
5106         }
5107
5108         node = uu_avl_first(fsperm->fsp_uge_avl);
5109         while (node != NULL) {
5110                 who_perm_node_t *next_node = uu_avl_next(fsperm->fsp_uge_avl,
5111                     node);
5112                 who_perm_t *who_perm = &node->who_perm;
5113                 who_perm_fini(who_perm);
5114                 uu_avl_remove(fsperm->fsp_uge_avl, node);
5115                 free(node);
5116                 node = next_node;
5117         }
5118
5119         uu_avl_destroy(fsperm->fsp_sc_avl);
5120         uu_avl_destroy(fsperm->fsp_uge_avl);
5121 }
5122
5123 static void
5124 set_deleg_perm_node(uu_avl_t *avl, deleg_perm_node_t *node,
5125     zfs_deleg_who_type_t who_type, const char *name, char locality)
5126 {
5127         uu_avl_index_t idx = 0;
5128
5129         deleg_perm_node_t *found_node = NULL;
5130         deleg_perm_t    *deleg_perm = &node->dpn_perm;
5131
5132         deleg_perm_init(deleg_perm, who_type, name);
5133
5134         if ((found_node = uu_avl_find(avl, node, NULL, &idx))
5135             == NULL)
5136                 uu_avl_insert(avl, node, idx);
5137         else {
5138                 node = found_node;
5139                 deleg_perm = &node->dpn_perm;
5140         }
5141
5142
5143         switch (locality) {
5144         case ZFS_DELEG_LOCAL:
5145                 deleg_perm->dp_local = B_TRUE;
5146                 break;
5147         case ZFS_DELEG_DESCENDENT:
5148                 deleg_perm->dp_descend = B_TRUE;
5149                 break;
5150         case ZFS_DELEG_NA:
5151                 break;
5152         default:
5153                 assert(B_FALSE); /* invalid locality */
5154         }
5155 }
5156
5157 static inline int
5158 parse_who_perm(who_perm_t *who_perm, nvlist_t *nvl, char locality)
5159 {
5160         nvpair_t *nvp = NULL;
5161         fs_perm_set_t *fspset = who_perm->who_fsperm->fsp_set;
5162         uu_avl_t *avl = who_perm->who_deleg_perm_avl;
5163         zfs_deleg_who_type_t who_type = who_perm->who_type;
5164
5165         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
5166                 const char *name = nvpair_name(nvp);
5167                 data_type_t type = nvpair_type(nvp);
5168                 uu_avl_pool_t *avl_pool = fspset->fsps_deleg_perm_avl_pool;
5169                 deleg_perm_node_t *node =
5170                     safe_malloc(sizeof (deleg_perm_node_t));
5171
5172                 VERIFY(type == DATA_TYPE_BOOLEAN);
5173
5174                 uu_avl_node_init(node, &node->dpn_avl_node, avl_pool);
5175                 set_deleg_perm_node(avl, node, who_type, name, locality);
5176         }
5177
5178         return (0);
5179 }
5180
5181 static inline int
5182 parse_fs_perm(fs_perm_t *fsperm, nvlist_t *nvl)
5183 {
5184         nvpair_t *nvp = NULL;
5185         fs_perm_set_t *fspset = fsperm->fsp_set;
5186
5187         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
5188                 nvlist_t *nvl2 = NULL;
5189                 const char *name = nvpair_name(nvp);
5190                 uu_avl_t *avl = NULL;
5191                 uu_avl_pool_t *avl_pool = NULL;
5192                 zfs_deleg_who_type_t perm_type = name[0];
5193                 char perm_locality = name[1];
5194                 const char *perm_name = name + 3;
5195                 who_perm_t *who_perm = NULL;
5196
5197                 assert('$' == name[2]);
5198
5199                 if (nvpair_value_nvlist(nvp, &nvl2) != 0)
5200                         return (-1);
5201
5202                 switch (perm_type) {
5203                 case ZFS_DELEG_CREATE:
5204                 case ZFS_DELEG_CREATE_SETS:
5205                 case ZFS_DELEG_NAMED_SET:
5206                 case ZFS_DELEG_NAMED_SET_SETS:
5207                         avl_pool = fspset->fsps_named_set_avl_pool;
5208                         avl = fsperm->fsp_sc_avl;
5209                         break;
5210                 case ZFS_DELEG_USER:
5211                 case ZFS_DELEG_USER_SETS:
5212                 case ZFS_DELEG_GROUP:
5213                 case ZFS_DELEG_GROUP_SETS:
5214                 case ZFS_DELEG_EVERYONE:
5215                 case ZFS_DELEG_EVERYONE_SETS:
5216                         avl_pool = fspset->fsps_who_perm_avl_pool;
5217                         avl = fsperm->fsp_uge_avl;
5218                         break;
5219
5220                 default:
5221                         assert(!"unhandled zfs_deleg_who_type_t");
5222                 }
5223
5224                 who_perm_node_t *found_node = NULL;
5225                 who_perm_node_t *node = safe_malloc(
5226                     sizeof (who_perm_node_t));
5227                 who_perm = &node->who_perm;
5228                 uu_avl_index_t idx = 0;
5229
5230                 uu_avl_node_init(node, &node->who_avl_node, avl_pool);
5231                 who_perm_init(who_perm, fsperm, perm_type, perm_name);
5232
5233                 if ((found_node = uu_avl_find(avl, node, NULL, &idx))
5234                     == NULL) {
5235                         if (avl == fsperm->fsp_uge_avl) {
5236                                 uid_t rid = 0;
5237                                 struct passwd *p = NULL;
5238                                 struct group *g = NULL;
5239                                 const char *nice_name = NULL;
5240
5241                                 switch (perm_type) {
5242                                 case ZFS_DELEG_USER_SETS:
5243                                 case ZFS_DELEG_USER:
5244                                         rid = atoi(perm_name);
5245                                         p = getpwuid(rid);
5246                                         if (p)
5247                                                 nice_name = p->pw_name;
5248                                         break;
5249                                 case ZFS_DELEG_GROUP_SETS:
5250                                 case ZFS_DELEG_GROUP:
5251                                         rid = atoi(perm_name);
5252                                         g = getgrgid(rid);
5253                                         if (g)
5254                                                 nice_name = g->gr_name;
5255                                         break;
5256
5257                                 default:
5258                                         break;
5259                                 }
5260
5261                                 if (nice_name != NULL) {
5262                                         (void) strlcpy(
5263                                             node->who_perm.who_ug_name,
5264                                             nice_name, 256);
5265                                 } else {
5266                                         /* User or group unknown */
5267                                         (void) snprintf(
5268                                             node->who_perm.who_ug_name,
5269                                             sizeof (node->who_perm.who_ug_name),
5270                                             "(unknown: %d)", rid);
5271                                 }
5272                         }
5273
5274                         uu_avl_insert(avl, node, idx);
5275                 } else {
5276                         node = found_node;
5277                         who_perm = &node->who_perm;
5278                 }
5279
5280                 assert(who_perm != NULL);
5281                 (void) parse_who_perm(who_perm, nvl2, perm_locality);
5282         }
5283
5284         return (0);
5285 }
5286
5287 static inline int
5288 parse_fs_perm_set(fs_perm_set_t *fspset, nvlist_t *nvl)
5289 {
5290         nvpair_t *nvp = NULL;
5291         uu_avl_index_t idx = 0;
5292
5293         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
5294                 nvlist_t *nvl2 = NULL;
5295                 const char *fsname = nvpair_name(nvp);
5296                 data_type_t type = nvpair_type(nvp);
5297                 fs_perm_t *fsperm = NULL;
5298                 fs_perm_node_t *node = safe_malloc(sizeof (fs_perm_node_t));
5299                 if (node == NULL)
5300                         nomem();
5301
5302                 fsperm = &node->fspn_fsperm;
5303
5304                 VERIFY(DATA_TYPE_NVLIST == type);
5305
5306                 uu_list_node_init(node, &node->fspn_list_node,
5307                     fspset->fsps_list_pool);
5308
5309                 idx = uu_list_numnodes(fspset->fsps_list);
5310                 fs_perm_init(fsperm, fspset, fsname);
5311
5312                 if (nvpair_value_nvlist(nvp, &nvl2) != 0)
5313                         return (-1);
5314
5315                 (void) parse_fs_perm(fsperm, nvl2);
5316
5317                 uu_list_insert(fspset->fsps_list, node, idx);
5318         }
5319
5320         return (0);
5321 }
5322
5323 static inline const char *
5324 deleg_perm_comment(zfs_deleg_note_t note)
5325 {
5326         const char *str = "";
5327
5328         /* subcommands */
5329         switch (note) {
5330                 /* SUBCOMMANDS */
5331         case ZFS_DELEG_NOTE_ALLOW:
5332                 str = gettext("Must also have the permission that is being"
5333                     "\n\t\t\t\tallowed");
5334                 break;
5335         case ZFS_DELEG_NOTE_CLONE:
5336                 str = gettext("Must also have the 'create' ability and 'mount'"
5337                     "\n\t\t\t\tability in the origin file system");
5338                 break;
5339         case ZFS_DELEG_NOTE_CREATE:
5340                 str = gettext("Must also have the 'mount' ability");
5341                 break;
5342         case ZFS_DELEG_NOTE_DESTROY:
5343                 str = gettext("Must also have the 'mount' ability");
5344                 break;
5345         case ZFS_DELEG_NOTE_DIFF:
5346                 str = gettext("Allows lookup of paths within a dataset;"
5347                     "\n\t\t\t\tgiven an object number. Ordinary users need this"
5348                     "\n\t\t\t\tin order to use zfs diff");
5349                 break;
5350         case ZFS_DELEG_NOTE_HOLD:
5351                 str = gettext("Allows adding a user hold to a snapshot");
5352                 break;
5353         case ZFS_DELEG_NOTE_MOUNT:
5354                 str = gettext("Allows mount/umount of ZFS datasets");
5355                 break;
5356         case ZFS_DELEG_NOTE_PROMOTE:
5357                 str = gettext("Must also have the 'mount'\n\t\t\t\tand"
5358                     " 'promote' ability in the origin file system");
5359                 break;
5360         case ZFS_DELEG_NOTE_RECEIVE:
5361                 str = gettext("Must also have the 'mount' and 'create'"
5362                     " ability");
5363                 break;
5364         case ZFS_DELEG_NOTE_RELEASE:
5365                 str = gettext("Allows releasing a user hold which\n\t\t\t\t"
5366                     "might destroy the snapshot");
5367                 break;
5368         case ZFS_DELEG_NOTE_RENAME:
5369                 str = gettext("Must also have the 'mount' and 'create'"
5370                     "\n\t\t\t\tability in the new parent");
5371                 break;
5372         case ZFS_DELEG_NOTE_ROLLBACK:
5373                 str = gettext("");
5374                 break;
5375         case ZFS_DELEG_NOTE_SEND:
5376                 str = gettext("");
5377                 break;
5378         case ZFS_DELEG_NOTE_SHARE:
5379                 str = gettext("Allows sharing file systems over NFS or SMB"
5380                     "\n\t\t\t\tprotocols");
5381                 break;
5382         case ZFS_DELEG_NOTE_SNAPSHOT:
5383                 str = gettext("");
5384                 break;
5385         case ZFS_DELEG_NOTE_LOAD_KEY:
5386                 str = gettext("Allows loading or unloading an encryption key");
5387                 break;
5388         case ZFS_DELEG_NOTE_CHANGE_KEY:
5389                 str = gettext("Allows changing or adding an encryption key");
5390                 break;
5391 /*
5392  *      case ZFS_DELEG_NOTE_VSCAN:
5393  *              str = gettext("");
5394  *              break;
5395  */
5396                 /* OTHER */
5397         case ZFS_DELEG_NOTE_GROUPQUOTA:
5398                 str = gettext("Allows accessing any groupquota@... property");
5399                 break;
5400         case ZFS_DELEG_NOTE_GROUPUSED:
5401                 str = gettext("Allows reading any groupused@... property");
5402                 break;
5403         case ZFS_DELEG_NOTE_USERPROP:
5404                 str = gettext("Allows changing any user property");
5405                 break;
5406         case ZFS_DELEG_NOTE_USERQUOTA:
5407                 str = gettext("Allows accessing any userquota@... property");
5408                 break;
5409         case ZFS_DELEG_NOTE_USERUSED:
5410                 str = gettext("Allows reading any userused@... property");
5411                 break;
5412         case ZFS_DELEG_NOTE_USEROBJQUOTA:
5413                 str = gettext("Allows accessing any userobjquota@... property");
5414                 break;
5415         case ZFS_DELEG_NOTE_GROUPOBJQUOTA:
5416                 str = gettext("Allows accessing any \n\t\t\t\t"
5417                     "groupobjquota@... property");
5418                 break;
5419         case ZFS_DELEG_NOTE_GROUPOBJUSED:
5420                 str = gettext("Allows reading any groupobjused@... property");
5421                 break;
5422         case ZFS_DELEG_NOTE_USEROBJUSED:
5423                 str = gettext("Allows reading any userobjused@... property");
5424                 break;
5425         case ZFS_DELEG_NOTE_PROJECTQUOTA:
5426                 str = gettext("Allows accessing any projectquota@... property");
5427                 break;
5428         case ZFS_DELEG_NOTE_PROJECTOBJQUOTA:
5429                 str = gettext("Allows accessing any \n\t\t\t\t"
5430                     "projectobjquota@... property");
5431                 break;
5432         case ZFS_DELEG_NOTE_PROJECTUSED:
5433                 str = gettext("Allows reading any projectused@... property");
5434                 break;
5435         case ZFS_DELEG_NOTE_PROJECTOBJUSED:
5436                 str = gettext("Allows accessing any \n\t\t\t\t"
5437                     "projectobjused@... property");
5438                 break;
5439                 /* other */
5440         default:
5441                 str = "";
5442         }
5443
5444         return (str);
5445 }
5446
5447 struct allow_opts {
5448         boolean_t local;
5449         boolean_t descend;
5450         boolean_t user;
5451         boolean_t group;
5452         boolean_t everyone;
5453         boolean_t create;
5454         boolean_t set;
5455         boolean_t recursive; /* unallow only */
5456         boolean_t prt_usage;
5457
5458         boolean_t prt_perms;
5459         char *who;
5460         char *perms;
5461         const char *dataset;
5462 };
5463
5464 static inline int
5465 prop_cmp(const void *a, const void *b)
5466 {
5467         const char *str1 = *(const char **)a;
5468         const char *str2 = *(const char **)b;
5469         return (strcmp(str1, str2));
5470 }
5471
5472 static void
5473 allow_usage(boolean_t un, boolean_t requested, const char *msg)
5474 {
5475         const char *opt_desc[] = {
5476                 "-h", gettext("show this help message and exit"),
5477                 "-l", gettext("set permission locally"),
5478                 "-d", gettext("set permission for descents"),
5479                 "-u", gettext("set permission for user"),
5480                 "-g", gettext("set permission for group"),
5481                 "-e", gettext("set permission for everyone"),
5482                 "-c", gettext("set create time permission"),
5483                 "-s", gettext("define permission set"),
5484                 /* unallow only */
5485                 "-r", gettext("remove permissions recursively"),
5486         };
5487         size_t unallow_size = sizeof (opt_desc) / sizeof (char *);
5488         size_t allow_size = unallow_size - 2;
5489         const char *props[ZFS_NUM_PROPS];
5490         int i;
5491         size_t count = 0;
5492         FILE *fp = requested ? stdout : stderr;
5493         zprop_desc_t *pdtbl = zfs_prop_get_table();
5494         const char *fmt = gettext("%-16s %-14s\t%s\n");
5495
5496         (void) fprintf(fp, gettext("Usage: %s\n"), get_usage(un ? HELP_UNALLOW :
5497             HELP_ALLOW));
5498         (void) fprintf(fp, gettext("Options:\n"));
5499         for (i = 0; i < (un ? unallow_size : allow_size); i += 2) {
5500                 const char *opt = opt_desc[i];
5501                 const char *optdsc = opt_desc[i + 1];
5502                 (void) fprintf(fp, gettext("  %-10s  %s\n"), opt, optdsc);
5503         }
5504
5505         (void) fprintf(fp, gettext("\nThe following permissions are "
5506             "supported:\n\n"));
5507         (void) fprintf(fp, fmt, gettext("NAME"), gettext("TYPE"),
5508             gettext("NOTES"));
5509         for (i = 0; i < ZFS_NUM_DELEG_NOTES; i++) {
5510                 const char *perm_name = zfs_deleg_perm_tbl[i].z_perm;
5511                 zfs_deleg_note_t perm_note = zfs_deleg_perm_tbl[i].z_note;
5512                 const char *perm_type = deleg_perm_type(perm_note);
5513                 const char *perm_comment = deleg_perm_comment(perm_note);
5514                 (void) fprintf(fp, fmt, perm_name, perm_type, perm_comment);
5515         }
5516
5517         for (i = 0; i < ZFS_NUM_PROPS; i++) {
5518                 zprop_desc_t *pd = &pdtbl[i];
5519                 if (pd->pd_visible != B_TRUE)
5520                         continue;
5521
5522                 if (pd->pd_attr == PROP_READONLY)
5523                         continue;
5524
5525                 props[count++] = pd->pd_name;
5526         }
5527         props[count] = NULL;
5528
5529         qsort(props, count, sizeof (char *), prop_cmp);
5530
5531         for (i = 0; i < count; i++)
5532                 (void) fprintf(fp, fmt, props[i], gettext("property"), "");
5533
5534         if (msg != NULL)
5535                 (void) fprintf(fp, gettext("\nzfs: error: %s"), msg);
5536
5537         exit(requested ? 0 : 2);
5538 }
5539
5540 static inline const char *
5541 munge_args(int argc, char **argv, boolean_t un, size_t expected_argc,
5542     char **permsp)
5543 {
5544         if (un && argc == expected_argc - 1)
5545                 *permsp = NULL;
5546         else if (argc == expected_argc)
5547                 *permsp = argv[argc - 2];
5548         else
5549                 allow_usage(un, B_FALSE,
5550                     gettext("wrong number of parameters\n"));
5551
5552         return (argv[argc - 1]);
5553 }
5554
5555 static void
5556 parse_allow_args(int argc, char **argv, boolean_t un, struct allow_opts *opts)
5557 {
5558         int uge_sum = opts->user + opts->group + opts->everyone;
5559         int csuge_sum = opts->create + opts->set + uge_sum;
5560         int ldcsuge_sum = csuge_sum + opts->local + opts->descend;
5561         int all_sum = un ? ldcsuge_sum + opts->recursive : ldcsuge_sum;
5562
5563         if (uge_sum > 1)
5564                 allow_usage(un, B_FALSE,
5565                     gettext("-u, -g, and -e are mutually exclusive\n"));
5566
5567         if (opts->prt_usage) {
5568                 if (argc == 0 && all_sum == 0)
5569                         allow_usage(un, B_TRUE, NULL);
5570                 else
5571                         usage(B_FALSE);
5572         }
5573
5574         if (opts->set) {
5575                 if (csuge_sum > 1)
5576                         allow_usage(un, B_FALSE,
5577                             gettext("invalid options combined with -s\n"));
5578
5579                 opts->dataset = munge_args(argc, argv, un, 3, &opts->perms);
5580                 if (argv[0][0] != '@')
5581                         allow_usage(un, B_FALSE,
5582                             gettext("invalid set name: missing '@' prefix\n"));
5583                 opts->who = argv[0];
5584         } else if (opts->create) {
5585                 if (ldcsuge_sum > 1)
5586                         allow_usage(un, B_FALSE,
5587                             gettext("invalid options combined with -c\n"));
5588                 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
5589         } else if (opts->everyone) {
5590                 if (csuge_sum > 1)
5591                         allow_usage(un, B_FALSE,
5592                             gettext("invalid options combined with -e\n"));
5593                 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
5594         } else if (uge_sum == 0 && argc > 0 && strcmp(argv[0], "everyone")
5595             == 0) {
5596                 opts->everyone = B_TRUE;
5597                 argc--;
5598                 argv++;
5599                 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
5600         } else if (argc == 1 && !un) {
5601                 opts->prt_perms = B_TRUE;
5602                 opts->dataset = argv[argc-1];
5603         } else {
5604                 opts->dataset = munge_args(argc, argv, un, 3, &opts->perms);
5605                 opts->who = argv[0];
5606         }
5607
5608         if (!opts->local && !opts->descend) {
5609                 opts->local = B_TRUE;
5610                 opts->descend = B_TRUE;
5611         }
5612 }
5613
5614 static void
5615 store_allow_perm(zfs_deleg_who_type_t type, boolean_t local, boolean_t descend,
5616     const char *who, char *perms, nvlist_t *top_nvl)
5617 {
5618         int i;
5619         char ld[2] = { '\0', '\0' };
5620         char who_buf[MAXNAMELEN + 32];
5621         char base_type = '\0';
5622         char set_type = '\0';
5623         nvlist_t *base_nvl = NULL;
5624         nvlist_t *set_nvl = NULL;
5625         nvlist_t *nvl;
5626
5627         if (nvlist_alloc(&base_nvl, NV_UNIQUE_NAME, 0) != 0)
5628                 nomem();
5629         if (nvlist_alloc(&set_nvl, NV_UNIQUE_NAME, 0) !=  0)
5630                 nomem();
5631
5632         switch (type) {
5633         case ZFS_DELEG_NAMED_SET_SETS:
5634         case ZFS_DELEG_NAMED_SET:
5635                 set_type = ZFS_DELEG_NAMED_SET_SETS;
5636                 base_type = ZFS_DELEG_NAMED_SET;
5637                 ld[0] = ZFS_DELEG_NA;
5638                 break;
5639         case ZFS_DELEG_CREATE_SETS:
5640         case ZFS_DELEG_CREATE:
5641                 set_type = ZFS_DELEG_CREATE_SETS;
5642                 base_type = ZFS_DELEG_CREATE;
5643                 ld[0] = ZFS_DELEG_NA;
5644                 break;
5645         case ZFS_DELEG_USER_SETS:
5646         case ZFS_DELEG_USER:
5647                 set_type = ZFS_DELEG_USER_SETS;
5648                 base_type = ZFS_DELEG_USER;
5649                 if (local)
5650                         ld[0] = ZFS_DELEG_LOCAL;
5651                 if (descend)
5652                         ld[1] = ZFS_DELEG_DESCENDENT;
5653                 break;
5654         case ZFS_DELEG_GROUP_SETS:
5655         case ZFS_DELEG_GROUP:
5656                 set_type = ZFS_DELEG_GROUP_SETS;
5657                 base_type = ZFS_DELEG_GROUP;
5658                 if (local)
5659                         ld[0] = ZFS_DELEG_LOCAL;
5660                 if (descend)
5661                         ld[1] = ZFS_DELEG_DESCENDENT;
5662                 break;
5663         case ZFS_DELEG_EVERYONE_SETS:
5664         case ZFS_DELEG_EVERYONE:
5665                 set_type = ZFS_DELEG_EVERYONE_SETS;
5666                 base_type = ZFS_DELEG_EVERYONE;
5667                 if (local)
5668                         ld[0] = ZFS_DELEG_LOCAL;
5669                 if (descend)
5670                         ld[1] = ZFS_DELEG_DESCENDENT;
5671                 break;
5672
5673         default:
5674                 assert(set_type != '\0' && base_type != '\0');
5675         }
5676
5677         if (perms != NULL) {
5678                 char *curr = perms;
5679                 char *end = curr + strlen(perms);
5680
5681                 while (curr < end) {
5682                         char *delim = strchr(curr, ',');
5683                         if (delim == NULL)
5684                                 delim = end;
5685                         else
5686                                 *delim = '\0';
5687
5688                         if (curr[0] == '@')
5689                                 nvl = set_nvl;
5690                         else
5691                                 nvl = base_nvl;
5692
5693                         (void) nvlist_add_boolean(nvl, curr);
5694                         if (delim != end)
5695                                 *delim = ',';
5696                         curr = delim + 1;
5697                 }
5698
5699                 for (i = 0; i < 2; i++) {
5700                         char locality = ld[i];
5701                         if (locality == 0)
5702                                 continue;
5703
5704                         if (!nvlist_empty(base_nvl)) {
5705                                 if (who != NULL)
5706                                         (void) snprintf(who_buf,
5707                                             sizeof (who_buf), "%c%c$%s",
5708                                             base_type, locality, who);
5709                                 else
5710                                         (void) snprintf(who_buf,
5711                                             sizeof (who_buf), "%c%c$",
5712                                             base_type, locality);
5713
5714                                 (void) nvlist_add_nvlist(top_nvl, who_buf,
5715                                     base_nvl);
5716                         }
5717
5718
5719                         if (!nvlist_empty(set_nvl)) {
5720                                 if (who != NULL)
5721                                         (void) snprintf(who_buf,
5722                                             sizeof (who_buf), "%c%c$%s",
5723                                             set_type, locality, who);
5724                                 else
5725                                         (void) snprintf(who_buf,
5726                                             sizeof (who_buf), "%c%c$",
5727                                             set_type, locality);
5728
5729                                 (void) nvlist_add_nvlist(top_nvl, who_buf,
5730                                     set_nvl);
5731                         }
5732                 }
5733         } else {
5734                 for (i = 0; i < 2; i++) {
5735                         char locality = ld[i];
5736                         if (locality == 0)
5737                                 continue;
5738
5739                         if (who != NULL)
5740                                 (void) snprintf(who_buf, sizeof (who_buf),
5741                                     "%c%c$%s", base_type, locality, who);
5742                         else
5743                                 (void) snprintf(who_buf, sizeof (who_buf),
5744                                     "%c%c$", base_type, locality);
5745                         (void) nvlist_add_boolean(top_nvl, who_buf);
5746
5747                         if (who != NULL)
5748                                 (void) snprintf(who_buf, sizeof (who_buf),
5749                                     "%c%c$%s", set_type, locality, who);
5750                         else
5751                                 (void) snprintf(who_buf, sizeof (who_buf),
5752                                     "%c%c$", set_type, locality);
5753                         (void) nvlist_add_boolean(top_nvl, who_buf);
5754                 }
5755         }
5756 }
5757
5758 static int
5759 construct_fsacl_list(boolean_t un, struct allow_opts *opts, nvlist_t **nvlp)
5760 {
5761         if (nvlist_alloc(nvlp, NV_UNIQUE_NAME, 0) != 0)
5762                 nomem();
5763
5764         if (opts->set) {
5765                 store_allow_perm(ZFS_DELEG_NAMED_SET, opts->local,
5766                     opts->descend, opts->who, opts->perms, *nvlp);
5767         } else if (opts->create) {
5768                 store_allow_perm(ZFS_DELEG_CREATE, opts->local,
5769                     opts->descend, NULL, opts->perms, *nvlp);
5770         } else if (opts->everyone) {
5771                 store_allow_perm(ZFS_DELEG_EVERYONE, opts->local,
5772                     opts->descend, NULL, opts->perms, *nvlp);
5773         } else {
5774                 char *curr = opts->who;
5775                 char *end = curr + strlen(curr);
5776
5777                 while (curr < end) {
5778                         const char *who;
5779                         zfs_deleg_who_type_t who_type = ZFS_DELEG_WHO_UNKNOWN;
5780                         char *endch;
5781                         char *delim = strchr(curr, ',');
5782                         char errbuf[256];
5783                         char id[64];
5784                         struct passwd *p = NULL;
5785                         struct group *g = NULL;
5786
5787                         uid_t rid;
5788                         if (delim == NULL)
5789                                 delim = end;
5790                         else
5791                                 *delim = '\0';
5792
5793                         rid = (uid_t)strtol(curr, &endch, 0);
5794                         if (opts->user) {
5795                                 who_type = ZFS_DELEG_USER;
5796                                 if (*endch != '\0')
5797                                         p = getpwnam(curr);
5798                                 else
5799                                         p = getpwuid(rid);
5800
5801                                 if (p != NULL)
5802                                         rid = p->pw_uid;
5803                                 else if (*endch != '\0') {
5804                                         (void) snprintf(errbuf, 256, gettext(
5805                                             "invalid user %s\n"), curr);
5806                                         allow_usage(un, B_TRUE, errbuf);
5807                                 }
5808                         } else if (opts->group) {
5809                                 who_type = ZFS_DELEG_GROUP;
5810                                 if (*endch != '\0')
5811                                         g = getgrnam(curr);
5812                                 else
5813                                         g = getgrgid(rid);
5814
5815                                 if (g != NULL)
5816                                         rid = g->gr_gid;
5817                                 else if (*endch != '\0') {
5818                                         (void) snprintf(errbuf, 256, gettext(
5819                                             "invalid group %s\n"),  curr);
5820                                         allow_usage(un, B_TRUE, errbuf);
5821                                 }
5822                         } else {
5823                                 if (*endch != '\0') {
5824                                         p = getpwnam(curr);
5825                                 } else {
5826                                         p = getpwuid(rid);
5827                                 }
5828
5829                                 if (p == NULL) {
5830                                         if (*endch != '\0') {
5831                                                 g = getgrnam(curr);
5832                                         } else {
5833                                                 g = getgrgid(rid);
5834                                         }
5835                                 }
5836
5837                                 if (p != NULL) {
5838                                         who_type = ZFS_DELEG_USER;
5839                                         rid = p->pw_uid;
5840                                 } else if (g != NULL) {
5841                                         who_type = ZFS_DELEG_GROUP;
5842                                         rid = g->gr_gid;
5843                                 } else {
5844                                         (void) snprintf(errbuf, 256, gettext(
5845                                             "invalid user/group %s\n"), curr);
5846                                         allow_usage(un, B_TRUE, errbuf);
5847                                 }
5848                         }
5849
5850                         (void) sprintf(id, "%u", rid);
5851                         who = id;
5852
5853                         store_allow_perm(who_type, opts->local,
5854                             opts->descend, who, opts->perms, *nvlp);
5855                         curr = delim + 1;
5856                 }
5857         }
5858
5859         return (0);
5860 }
5861
5862 static void
5863 print_set_creat_perms(uu_avl_t *who_avl)
5864 {
5865         const char *sc_title[] = {
5866                 gettext("Permission sets:\n"),
5867                 gettext("Create time permissions:\n"),
5868                 NULL
5869         };
5870         who_perm_node_t *who_node = NULL;
5871         int prev_weight = -1;
5872
5873         for (who_node = uu_avl_first(who_avl); who_node != NULL;
5874             who_node = uu_avl_next(who_avl, who_node)) {
5875                 uu_avl_t *avl = who_node->who_perm.who_deleg_perm_avl;
5876                 zfs_deleg_who_type_t who_type = who_node->who_perm.who_type;
5877                 const char *who_name = who_node->who_perm.who_name;
5878                 int weight = who_type2weight(who_type);
5879                 boolean_t first = B_TRUE;
5880                 deleg_perm_node_t *deleg_node;
5881
5882                 if (prev_weight != weight) {
5883                         (void) printf("%s", sc_title[weight]);
5884                         prev_weight = weight;
5885                 }
5886
5887                 if (who_name == NULL || strnlen(who_name, 1) == 0)
5888                         (void) printf("\t");
5889                 else
5890                         (void) printf("\t%s ", who_name);
5891
5892                 for (deleg_node = uu_avl_first(avl); deleg_node != NULL;
5893                     deleg_node = uu_avl_next(avl, deleg_node)) {
5894                         if (first) {
5895                                 (void) printf("%s",
5896                                     deleg_node->dpn_perm.dp_name);
5897                                 first = B_FALSE;
5898                         } else
5899                                 (void) printf(",%s",
5900                                     deleg_node->dpn_perm.dp_name);
5901                 }
5902
5903                 (void) printf("\n");
5904         }
5905 }
5906
5907 static void
5908 print_uge_deleg_perms(uu_avl_t *who_avl, boolean_t local, boolean_t descend,
5909     const char *title)
5910 {
5911         who_perm_node_t *who_node = NULL;
5912         boolean_t prt_title = B_TRUE;
5913         uu_avl_walk_t *walk;
5914
5915         if ((walk = uu_avl_walk_start(who_avl, UU_WALK_ROBUST)) == NULL)
5916                 nomem();
5917
5918         while ((who_node = uu_avl_walk_next(walk)) != NULL) {
5919                 const char *who_name = who_node->who_perm.who_name;
5920                 const char *nice_who_name = who_node->who_perm.who_ug_name;
5921                 uu_avl_t *avl = who_node->who_perm.who_deleg_perm_avl;
5922                 zfs_deleg_who_type_t who_type = who_node->who_perm.who_type;
5923                 char delim = ' ';
5924                 deleg_perm_node_t *deleg_node;
5925                 boolean_t prt_who = B_TRUE;
5926
5927                 for (deleg_node = uu_avl_first(avl);
5928                     deleg_node != NULL;
5929                     deleg_node = uu_avl_next(avl, deleg_node)) {
5930                         if (local != deleg_node->dpn_perm.dp_local ||
5931                             descend != deleg_node->dpn_perm.dp_descend)
5932                                 continue;
5933
5934                         if (prt_who) {
5935                                 const char *who = NULL;
5936                                 if (prt_title) {
5937                                         prt_title = B_FALSE;
5938                                         (void) printf("%s", title);
5939                                 }
5940
5941                                 switch (who_type) {
5942                                 case ZFS_DELEG_USER_SETS:
5943                                 case ZFS_DELEG_USER:
5944                                         who = gettext("user");
5945                                         if (nice_who_name)
5946                                                 who_name  = nice_who_name;
5947                                         break;
5948                                 case ZFS_DELEG_GROUP_SETS:
5949                                 case ZFS_DELEG_GROUP:
5950                                         who = gettext("group");
5951                                         if (nice_who_name)
5952                                                 who_name  = nice_who_name;
5953                                         break;
5954                                 case ZFS_DELEG_EVERYONE_SETS:
5955                                 case ZFS_DELEG_EVERYONE:
5956                                         who = gettext("everyone");
5957                                         who_name = NULL;
5958                                         break;
5959
5960                                 default:
5961                                         assert(who != NULL);
5962                                 }
5963
5964                                 prt_who = B_FALSE;
5965                                 if (who_name == NULL)
5966                                         (void) printf("\t%s", who);
5967                                 else
5968                                         (void) printf("\t%s %s", who, who_name);
5969                         }
5970
5971                         (void) printf("%c%s", delim,
5972                             deleg_node->dpn_perm.dp_name);
5973                         delim = ',';
5974                 }
5975
5976                 if (!prt_who)
5977                         (void) printf("\n");
5978         }
5979
5980         uu_avl_walk_end(walk);
5981 }
5982
5983 static void
5984 print_fs_perms(fs_perm_set_t *fspset)
5985 {
5986         fs_perm_node_t *node = NULL;
5987         char buf[MAXNAMELEN + 32];
5988         const char *dsname = buf;
5989
5990         for (node = uu_list_first(fspset->fsps_list); node != NULL;
5991             node = uu_list_next(fspset->fsps_list, node)) {
5992                 uu_avl_t *sc_avl = node->fspn_fsperm.fsp_sc_avl;
5993                 uu_avl_t *uge_avl = node->fspn_fsperm.fsp_uge_avl;
5994                 int left = 0;
5995
5996                 (void) snprintf(buf, sizeof (buf),
5997                     gettext("---- Permissions on %s "),
5998                     node->fspn_fsperm.fsp_name);
5999                 (void) printf("%s", dsname);
6000                 left = 70 - strlen(buf);
6001                 while (left-- > 0)
6002                         (void) printf("-");
6003                 (void) printf("\n");
6004
6005                 print_set_creat_perms(sc_avl);
6006                 print_uge_deleg_perms(uge_avl, B_TRUE, B_FALSE,
6007                     gettext("Local permissions:\n"));
6008                 print_uge_deleg_perms(uge_avl, B_FALSE, B_TRUE,
6009                     gettext("Descendent permissions:\n"));
6010                 print_uge_deleg_perms(uge_avl, B_TRUE, B_TRUE,
6011                     gettext("Local+Descendent permissions:\n"));
6012         }
6013 }
6014
6015 static fs_perm_set_t fs_perm_set = { NULL, NULL, NULL, NULL };
6016
6017 struct deleg_perms {
6018         boolean_t un;
6019         nvlist_t *nvl;
6020 };
6021
6022 static int
6023 set_deleg_perms(zfs_handle_t *zhp, void *data)
6024 {
6025         struct deleg_perms *perms = (struct deleg_perms *)data;
6026         zfs_type_t zfs_type = zfs_get_type(zhp);
6027
6028         if (zfs_type != ZFS_TYPE_FILESYSTEM && zfs_type != ZFS_TYPE_VOLUME)
6029                 return (0);
6030
6031         return (zfs_set_fsacl(zhp, perms->un, perms->nvl));
6032 }
6033
6034 static int
6035 zfs_do_allow_unallow_impl(int argc, char **argv, boolean_t un)
6036 {
6037         zfs_handle_t *zhp;
6038         nvlist_t *perm_nvl = NULL;
6039         nvlist_t *update_perm_nvl = NULL;
6040         int error = 1;
6041         int c;
6042         struct allow_opts opts = { 0 };
6043
6044         const char *optstr = un ? "ldugecsrh" : "ldugecsh";
6045
6046         /* check opts */
6047         while ((c = getopt(argc, argv, optstr)) != -1) {
6048                 switch (c) {
6049                 case 'l':
6050                         opts.local = B_TRUE;
6051                         break;
6052                 case 'd':
6053                         opts.descend = B_TRUE;
6054                         break;
6055                 case 'u':
6056                         opts.user = B_TRUE;
6057                         break;
6058                 case 'g':
6059                         opts.group = B_TRUE;
6060                         break;
6061                 case 'e':
6062                         opts.everyone = B_TRUE;
6063                         break;
6064                 case 's':
6065                         opts.set = B_TRUE;
6066                         break;
6067                 case 'c':
6068                         opts.create = B_TRUE;
6069                         break;
6070                 case 'r':
6071                         opts.recursive = B_TRUE;
6072                         break;
6073                 case ':':
6074                         (void) fprintf(stderr, gettext("missing argument for "
6075                             "'%c' option\n"), optopt);
6076                         usage(B_FALSE);
6077                         break;
6078                 case 'h':
6079                         opts.prt_usage = B_TRUE;
6080                         break;
6081                 case '?':
6082                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6083                             optopt);
6084                         usage(B_FALSE);
6085                 }
6086         }
6087
6088         argc -= optind;
6089         argv += optind;
6090
6091         /* check arguments */
6092         parse_allow_args(argc, argv, un, &opts);
6093
6094         /* try to open the dataset */
6095         if ((zhp = zfs_open(g_zfs, opts.dataset, ZFS_TYPE_FILESYSTEM |
6096             ZFS_TYPE_VOLUME)) == NULL) {
6097                 (void) fprintf(stderr, "Failed to open dataset: %s\n",
6098                     opts.dataset);
6099                 return (-1);
6100         }
6101
6102         if (zfs_get_fsacl(zhp, &perm_nvl) != 0)
6103                 goto cleanup2;
6104
6105         fs_perm_set_init(&fs_perm_set);
6106         if (parse_fs_perm_set(&fs_perm_set, perm_nvl) != 0) {
6107                 (void) fprintf(stderr, "Failed to parse fsacl permissions\n");
6108                 goto cleanup1;
6109         }
6110
6111         if (opts.prt_perms)
6112                 print_fs_perms(&fs_perm_set);
6113         else {
6114                 (void) construct_fsacl_list(un, &opts, &update_perm_nvl);
6115                 if (zfs_set_fsacl(zhp, un, update_perm_nvl) != 0)
6116                         goto cleanup0;
6117
6118                 if (un && opts.recursive) {
6119                         struct deleg_perms data = { un, update_perm_nvl };
6120                         if (zfs_iter_filesystems(zhp, set_deleg_perms,
6121                             &data) != 0)
6122                                 goto cleanup0;
6123                 }
6124         }
6125
6126         error = 0;
6127
6128 cleanup0:
6129         nvlist_free(perm_nvl);
6130         nvlist_free(update_perm_nvl);
6131 cleanup1:
6132         fs_perm_set_fini(&fs_perm_set);
6133 cleanup2:
6134         zfs_close(zhp);
6135
6136         return (error);
6137 }
6138
6139 static int
6140 zfs_do_allow(int argc, char **argv)
6141 {
6142         return (zfs_do_allow_unallow_impl(argc, argv, B_FALSE));
6143 }
6144
6145 static int
6146 zfs_do_unallow(int argc, char **argv)
6147 {
6148         return (zfs_do_allow_unallow_impl(argc, argv, B_TRUE));
6149 }
6150
6151 static int
6152 zfs_do_hold_rele_impl(int argc, char **argv, boolean_t holding)
6153 {
6154         int errors = 0;
6155         int i;
6156         const char *tag;
6157         boolean_t recursive = B_FALSE;
6158         const char *opts = holding ? "rt" : "r";
6159         int c;
6160
6161         /* check options */
6162         while ((c = getopt(argc, argv, opts)) != -1) {
6163                 switch (c) {
6164                 case 'r':
6165                         recursive = B_TRUE;
6166                         break;
6167                 case '?':
6168                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6169                             optopt);
6170                         usage(B_FALSE);
6171                 }
6172         }
6173
6174         argc -= optind;
6175         argv += optind;
6176
6177         /* check number of arguments */
6178         if (argc < 2)
6179                 usage(B_FALSE);
6180
6181         tag = argv[0];
6182         --argc;
6183         ++argv;
6184
6185         if (holding && tag[0] == '.') {
6186                 /* tags starting with '.' are reserved for libzfs */
6187                 (void) fprintf(stderr, gettext("tag may not start with '.'\n"));
6188                 usage(B_FALSE);
6189         }
6190
6191         for (i = 0; i < argc; ++i) {
6192                 zfs_handle_t *zhp;
6193                 char parent[ZFS_MAX_DATASET_NAME_LEN];
6194                 const char *delim;
6195                 char *path = argv[i];
6196
6197                 delim = strchr(path, '@');
6198                 if (delim == NULL) {
6199                         (void) fprintf(stderr,
6200                             gettext("'%s' is not a snapshot\n"), path);
6201                         ++errors;
6202                         continue;
6203                 }
6204                 (void) strncpy(parent, path, delim - path);
6205                 parent[delim - path] = '\0';
6206
6207                 zhp = zfs_open(g_zfs, parent,
6208                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
6209                 if (zhp == NULL) {
6210                         ++errors;
6211                         continue;
6212                 }
6213                 if (holding) {
6214                         if (zfs_hold(zhp, delim+1, tag, recursive, -1) != 0)
6215                                 ++errors;
6216                 } else {
6217                         if (zfs_release(zhp, delim+1, tag, recursive) != 0)
6218                                 ++errors;
6219                 }
6220                 zfs_close(zhp);
6221         }
6222
6223         return (errors != 0);
6224 }
6225
6226 /*
6227  * zfs hold [-r] [-t] <tag> <snap> ...
6228  *
6229  *      -r      Recursively hold
6230  *
6231  * Apply a user-hold with the given tag to the list of snapshots.
6232  */
6233 static int
6234 zfs_do_hold(int argc, char **argv)
6235 {
6236         return (zfs_do_hold_rele_impl(argc, argv, B_TRUE));
6237 }
6238
6239 /*
6240  * zfs release [-r] <tag> <snap> ...
6241  *
6242  *      -r      Recursively release
6243  *
6244  * Release a user-hold with the given tag from the list of snapshots.
6245  */
6246 static int
6247 zfs_do_release(int argc, char **argv)
6248 {
6249         return (zfs_do_hold_rele_impl(argc, argv, B_FALSE));
6250 }
6251
6252 typedef struct holds_cbdata {
6253         boolean_t       cb_recursive;
6254         const char      *cb_snapname;
6255         nvlist_t        **cb_nvlp;
6256         size_t          cb_max_namelen;
6257         size_t          cb_max_taglen;
6258 } holds_cbdata_t;
6259
6260 #define STRFTIME_FMT_STR "%a %b %e %H:%M %Y"
6261 #define DATETIME_BUF_LEN (32)
6262 /*
6263  *
6264  */
6265 static void
6266 print_holds(boolean_t scripted, int nwidth, int tagwidth, nvlist_t *nvl)
6267 {
6268         int i;
6269         nvpair_t *nvp = NULL;
6270         char *hdr_cols[] = { "NAME", "TAG", "TIMESTAMP" };
6271         const char *col;
6272
6273         if (!scripted) {
6274                 for (i = 0; i < 3; i++) {
6275                         col = gettext(hdr_cols[i]);
6276                         if (i < 2)
6277                                 (void) printf("%-*s  ", i ? tagwidth : nwidth,
6278                                     col);
6279                         else
6280                                 (void) printf("%s\n", col);
6281                 }
6282         }
6283
6284         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
6285                 char *zname = nvpair_name(nvp);
6286                 nvlist_t *nvl2;
6287                 nvpair_t *nvp2 = NULL;
6288                 (void) nvpair_value_nvlist(nvp, &nvl2);
6289                 while ((nvp2 = nvlist_next_nvpair(nvl2, nvp2)) != NULL) {
6290                         char tsbuf[DATETIME_BUF_LEN];
6291                         char *tagname = nvpair_name(nvp2);
6292                         uint64_t val = 0;
6293                         time_t time;
6294                         struct tm t;
6295
6296                         (void) nvpair_value_uint64(nvp2, &val);
6297                         time = (time_t)val;
6298                         (void) localtime_r(&time, &t);
6299                         (void) strftime(tsbuf, DATETIME_BUF_LEN,
6300                             gettext(STRFTIME_FMT_STR), &t);
6301
6302                         if (scripted) {
6303                                 (void) printf("%s\t%s\t%s\n", zname,
6304                                     tagname, tsbuf);
6305                         } else {
6306                                 (void) printf("%-*s  %-*s  %s\n", nwidth,
6307                                     zname, tagwidth, tagname, tsbuf);
6308                         }
6309                 }
6310         }
6311 }
6312
6313 /*
6314  * Generic callback function to list a dataset or snapshot.
6315  */
6316 static int
6317 holds_callback(zfs_handle_t *zhp, void *data)
6318 {
6319         holds_cbdata_t *cbp = data;
6320         nvlist_t *top_nvl = *cbp->cb_nvlp;
6321         nvlist_t *nvl = NULL;
6322         nvpair_t *nvp = NULL;
6323         const char *zname = zfs_get_name(zhp);
6324         size_t znamelen = strlen(zname);
6325
6326         if (cbp->cb_recursive) {
6327                 const char *snapname;
6328                 char *delim  = strchr(zname, '@');
6329                 if (delim == NULL)
6330                         return (0);
6331
6332                 snapname = delim + 1;
6333                 if (strcmp(cbp->cb_snapname, snapname))
6334                         return (0);
6335         }
6336
6337         if (zfs_get_holds(zhp, &nvl) != 0)
6338                 return (-1);
6339
6340         if (znamelen > cbp->cb_max_namelen)
6341                 cbp->cb_max_namelen  = znamelen;
6342
6343         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
6344                 const char *tag = nvpair_name(nvp);
6345                 size_t taglen = strlen(tag);
6346                 if (taglen > cbp->cb_max_taglen)
6347                         cbp->cb_max_taglen  = taglen;
6348         }
6349
6350         return (nvlist_add_nvlist(top_nvl, zname, nvl));
6351 }
6352
6353 /*
6354  * zfs holds [-rH] <snap> ...
6355  *
6356  *      -r      Lists holds that are set on the named snapshots recursively.
6357  *      -H      Scripted mode; elide headers and separate columns by tabs.
6358  */
6359 static int
6360 zfs_do_holds(int argc, char **argv)
6361 {
6362         int errors = 0;
6363         int c;
6364         int i;
6365         boolean_t scripted = B_FALSE;
6366         boolean_t recursive = B_FALSE;
6367         const char *opts = "rH";
6368         nvlist_t *nvl;
6369
6370         int types = ZFS_TYPE_SNAPSHOT;
6371         holds_cbdata_t cb = { 0 };
6372
6373         int limit = 0;
6374         int ret = 0;
6375         int flags = 0;
6376
6377         /* check options */
6378         while ((c = getopt(argc, argv, opts)) != -1) {
6379                 switch (c) {
6380                 case 'r':
6381                         recursive = B_TRUE;
6382                         break;
6383                 case 'H':
6384                         scripted = B_TRUE;
6385                         break;
6386                 case '?':
6387                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6388                             optopt);
6389                         usage(B_FALSE);
6390                 }
6391         }
6392
6393         if (recursive) {
6394                 types |= ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME;
6395                 flags |= ZFS_ITER_RECURSE;
6396         }
6397
6398         argc -= optind;
6399         argv += optind;
6400
6401         /* check number of arguments */
6402         if (argc < 1)
6403                 usage(B_FALSE);
6404
6405         if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0)
6406                 nomem();
6407
6408         for (i = 0; i < argc; ++i) {
6409                 char *snapshot = argv[i];
6410                 const char *delim;
6411                 const char *snapname;
6412
6413                 delim = strchr(snapshot, '@');
6414                 if (delim == NULL) {
6415                         (void) fprintf(stderr,
6416                             gettext("'%s' is not a snapshot\n"), snapshot);
6417                         ++errors;
6418                         continue;
6419                 }
6420                 snapname = delim + 1;
6421                 if (recursive)
6422                         snapshot[delim - snapshot] = '\0';
6423
6424                 cb.cb_recursive = recursive;
6425                 cb.cb_snapname = snapname;
6426                 cb.cb_nvlp = &nvl;
6427
6428                 /*
6429                  *  1. collect holds data, set format options
6430                  */
6431                 ret = zfs_for_each(argc, argv, flags, types, NULL, NULL, limit,
6432                     holds_callback, &cb);
6433                 if (ret != 0)
6434                         ++errors;
6435         }
6436
6437         /*
6438          *  2. print holds data
6439          */
6440         print_holds(scripted, cb.cb_max_namelen, cb.cb_max_taglen, nvl);
6441
6442         if (nvlist_empty(nvl))
6443                 (void) fprintf(stderr, gettext("no datasets available\n"));
6444
6445         nvlist_free(nvl);
6446
6447         return (0 != errors);
6448 }
6449
6450 #define CHECK_SPINNER 30
6451 #define SPINNER_TIME 3          /* seconds */
6452 #define MOUNT_TIME 1            /* seconds */
6453
6454 typedef struct get_all_state {
6455         boolean_t       ga_verbose;
6456         get_all_cb_t    *ga_cbp;
6457 } get_all_state_t;
6458
6459 static int
6460 get_one_dataset(zfs_handle_t *zhp, void *data)
6461 {
6462         static char *spin[] = { "-", "\\", "|", "/" };
6463         static int spinval = 0;
6464         static int spincheck = 0;
6465         static time_t last_spin_time = (time_t)0;
6466         get_all_state_t *state = data;
6467         zfs_type_t type = zfs_get_type(zhp);
6468
6469         if (state->ga_verbose) {
6470                 if (--spincheck < 0) {
6471                         time_t now = time(NULL);
6472                         if (last_spin_time + SPINNER_TIME < now) {
6473                                 update_progress(spin[spinval++ % 4]);
6474                                 last_spin_time = now;
6475                         }
6476                         spincheck = CHECK_SPINNER;
6477                 }
6478         }
6479
6480         /*
6481          * Iterate over any nested datasets.
6482          */
6483         if (zfs_iter_filesystems(zhp, get_one_dataset, data) != 0) {
6484                 zfs_close(zhp);
6485                 return (1);
6486         }
6487
6488         /*
6489          * Skip any datasets whose type does not match.
6490          */
6491         if ((type & ZFS_TYPE_FILESYSTEM) == 0) {
6492                 zfs_close(zhp);
6493                 return (0);
6494         }
6495         libzfs_add_handle(state->ga_cbp, zhp);
6496         assert(state->ga_cbp->cb_used <= state->ga_cbp->cb_alloc);
6497
6498         return (0);
6499 }
6500
6501 static void
6502 get_all_datasets(get_all_cb_t *cbp, boolean_t verbose)
6503 {
6504         get_all_state_t state = {
6505             .ga_verbose = verbose,
6506             .ga_cbp = cbp
6507         };
6508
6509         if (verbose)
6510                 set_progress_header(gettext("Reading ZFS config"));
6511         (void) zfs_iter_root(g_zfs, get_one_dataset, &state);
6512
6513         if (verbose)
6514                 finish_progress(gettext("done."));
6515 }
6516
6517 /*
6518  * Generic callback for sharing or mounting filesystems.  Because the code is so
6519  * similar, we have a common function with an extra parameter to determine which
6520  * mode we are using.
6521  */
6522 typedef enum { OP_SHARE, OP_MOUNT } share_mount_op_t;
6523
6524 typedef struct share_mount_state {
6525         share_mount_op_t        sm_op;
6526         boolean_t       sm_verbose;
6527         int     sm_flags;
6528         char    *sm_options;
6529         char    *sm_proto; /* only valid for OP_SHARE */
6530         pthread_mutex_t sm_lock; /* protects the remaining fields */
6531         uint_t  sm_total; /* number of filesystems to process */
6532         uint_t  sm_done; /* number of filesystems processed */
6533         int     sm_status; /* -1 if any of the share/mount operations failed */
6534 } share_mount_state_t;
6535
6536 /*
6537  * Share or mount a dataset.
6538  */
6539 static int
6540 share_mount_one(zfs_handle_t *zhp, int op, int flags, char *protocol,
6541     boolean_t explicit, const char *options)
6542 {
6543         char mountpoint[ZFS_MAXPROPLEN];
6544         char shareopts[ZFS_MAXPROPLEN];
6545         char smbshareopts[ZFS_MAXPROPLEN];
6546         const char *cmdname = op == OP_SHARE ? "share" : "mount";
6547         struct mnttab mnt;
6548         uint64_t zoned, canmount;
6549         boolean_t shared_nfs, shared_smb;
6550
6551         assert(zfs_get_type(zhp) & ZFS_TYPE_FILESYSTEM);
6552
6553         /*
6554          * Check to make sure we can mount/share this dataset.  If we
6555          * are in the global zone and the filesystem is exported to a
6556          * local zone, or if we are in a local zone and the
6557          * filesystem is not exported, then it is an error.
6558          */
6559         zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED);
6560
6561         if (zoned && getzoneid() == GLOBAL_ZONEID) {
6562                 if (!explicit)
6563                         return (0);
6564
6565                 (void) fprintf(stderr, gettext("cannot %s '%s': "
6566                     "dataset is exported to a local zone\n"), cmdname,
6567                     zfs_get_name(zhp));
6568                 return (1);
6569
6570         } else if (!zoned && getzoneid() != GLOBAL_ZONEID) {
6571                 if (!explicit)
6572                         return (0);
6573
6574                 (void) fprintf(stderr, gettext("cannot %s '%s': "
6575                     "permission denied\n"), cmdname,
6576                     zfs_get_name(zhp));
6577                 return (1);
6578         }
6579
6580         /*
6581          * Ignore any filesystems which don't apply to us. This
6582          * includes those with a legacy mountpoint, or those with
6583          * legacy share options.
6584          */
6585         verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
6586             sizeof (mountpoint), NULL, NULL, 0, B_FALSE) == 0);
6587         verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, shareopts,
6588             sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0);
6589         verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshareopts,
6590             sizeof (smbshareopts), NULL, NULL, 0, B_FALSE) == 0);
6591
6592         if (op == OP_SHARE && strcmp(shareopts, "off") == 0 &&
6593             strcmp(smbshareopts, "off") == 0) {
6594                 if (!explicit)
6595                         return (0);
6596
6597                 (void) fprintf(stderr, gettext("cannot share '%s': "
6598                     "legacy share\n"), zfs_get_name(zhp));
6599                 (void) fprintf(stderr, gettext("use share(1M) to "
6600                     "share this filesystem, or set "
6601                     "sharenfs property on\n"));
6602                 return (1);
6603         }
6604
6605         /*
6606          * We cannot share or mount legacy filesystems. If the
6607          * shareopts is non-legacy but the mountpoint is legacy, we
6608          * treat it as a legacy share.
6609          */
6610         if (strcmp(mountpoint, "legacy") == 0) {
6611                 if (!explicit)
6612                         return (0);
6613
6614                 (void) fprintf(stderr, gettext("cannot %s '%s': "
6615                     "legacy mountpoint\n"), cmdname, zfs_get_name(zhp));
6616                 (void) fprintf(stderr, gettext("use %s(1M) to "
6617                     "%s this filesystem\n"), cmdname, cmdname);
6618                 return (1);
6619         }
6620
6621         if (strcmp(mountpoint, "none") == 0) {
6622                 if (!explicit)
6623                         return (0);
6624
6625                 (void) fprintf(stderr, gettext("cannot %s '%s': no "
6626                     "mountpoint set\n"), cmdname, zfs_get_name(zhp));
6627                 return (1);
6628         }
6629
6630         /*
6631          * canmount     explicit        outcome
6632          * on           no              pass through
6633          * on           yes             pass through
6634          * off          no              return 0
6635          * off          yes             display error, return 1
6636          * noauto       no              return 0
6637          * noauto       yes             pass through
6638          */
6639         canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT);
6640         if (canmount == ZFS_CANMOUNT_OFF) {
6641                 if (!explicit)
6642                         return (0);
6643
6644                 (void) fprintf(stderr, gettext("cannot %s '%s': "
6645                     "'canmount' property is set to 'off'\n"), cmdname,
6646                     zfs_get_name(zhp));
6647                 return (1);
6648         } else if (canmount == ZFS_CANMOUNT_NOAUTO && !explicit) {
6649                 /*
6650                  * When performing a 'zfs mount -a', we skip any mounts for
6651                  * datasets that have 'noauto' set. Sharing a dataset with
6652                  * 'noauto' set is only allowed if it's mounted.
6653                  */
6654                 if (op == OP_MOUNT)
6655                         return (0);
6656                 if (op == OP_SHARE && !zfs_is_mounted(zhp, NULL)) {
6657                         /* also purge it from existing exports */
6658                         zfs_unshareall_bypath(zhp, mountpoint);
6659                         return (0);
6660                 }
6661         }
6662
6663         /*
6664          * If this filesystem is encrypted and does not have
6665          * a loaded key, we can not mount it.
6666          */
6667         if ((flags & MS_CRYPT) == 0 &&
6668             zfs_prop_get_int(zhp, ZFS_PROP_ENCRYPTION) != ZIO_CRYPT_OFF &&
6669             zfs_prop_get_int(zhp, ZFS_PROP_KEYSTATUS) ==
6670             ZFS_KEYSTATUS_UNAVAILABLE) {
6671                 if (!explicit)
6672                         return (0);
6673
6674                 (void) fprintf(stderr, gettext("cannot %s '%s': "
6675                     "encryption key not loaded\n"), cmdname, zfs_get_name(zhp));
6676                 return (1);
6677         }
6678
6679         /*
6680          * If this filesystem is inconsistent and has a receive resume
6681          * token, we can not mount it.
6682          */
6683         if (zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) &&
6684             zfs_prop_get(zhp, ZFS_PROP_RECEIVE_RESUME_TOKEN,
6685             NULL, 0, NULL, NULL, 0, B_TRUE) == 0) {
6686                 if (!explicit)
6687                         return (0);
6688
6689                 (void) fprintf(stderr, gettext("cannot %s '%s': "
6690                     "Contains partially-completed state from "
6691                     "\"zfs receive -s\", which can be resumed with "
6692                     "\"zfs send -t\"\n"),
6693                     cmdname, zfs_get_name(zhp));
6694                 return (1);
6695         }
6696
6697         if (zfs_prop_get_int(zhp, ZFS_PROP_REDACTED) && !(flags & MS_FORCE)) {
6698                 if (!explicit)
6699                         return (0);
6700
6701                 (void) fprintf(stderr, gettext("cannot %s '%s': "
6702                     "Dataset is not complete, was created by receiving "
6703                     "a redacted zfs send stream.\n"), cmdname,
6704                     zfs_get_name(zhp));
6705                 return (1);
6706         }
6707
6708         /*
6709          * At this point, we have verified that the mountpoint and/or
6710          * shareopts are appropriate for auto management. If the
6711          * filesystem is already mounted or shared, return (failing
6712          * for explicit requests); otherwise mount or share the
6713          * filesystem.
6714          */
6715         switch (op) {
6716         case OP_SHARE:
6717
6718                 shared_nfs = zfs_is_shared_nfs(zhp, NULL);
6719                 shared_smb = zfs_is_shared_smb(zhp, NULL);
6720
6721                 if ((shared_nfs && shared_smb) ||
6722                     (shared_nfs && strcmp(shareopts, "on") == 0 &&
6723                     strcmp(smbshareopts, "off") == 0) ||
6724                     (shared_smb && strcmp(smbshareopts, "on") == 0 &&
6725                     strcmp(shareopts, "off") == 0)) {
6726                         if (!explicit)
6727                                 return (0);
6728
6729                         (void) fprintf(stderr, gettext("cannot share "
6730                             "'%s': filesystem already shared\n"),
6731                             zfs_get_name(zhp));
6732                         return (1);
6733                 }
6734
6735                 if (!zfs_is_mounted(zhp, NULL) &&
6736                     zfs_mount(zhp, NULL, flags) != 0)
6737                         return (1);
6738
6739                 if (protocol == NULL) {
6740                         if (zfs_shareall(zhp) != 0)
6741                                 return (1);
6742                 } else if (strcmp(protocol, "nfs") == 0) {
6743                         if (zfs_share_nfs(zhp))
6744                                 return (1);
6745                 } else if (strcmp(protocol, "smb") == 0) {
6746                         if (zfs_share_smb(zhp))
6747                                 return (1);
6748                 } else {
6749                         (void) fprintf(stderr, gettext("cannot share "
6750                             "'%s': invalid share type '%s' "
6751                             "specified\n"),
6752                             zfs_get_name(zhp), protocol);
6753                         return (1);
6754                 }
6755
6756                 break;
6757
6758         case OP_MOUNT:
6759                 if (options == NULL)
6760                         mnt.mnt_mntopts = "";
6761                 else
6762                         mnt.mnt_mntopts = (char *)options;
6763
6764                 if (!hasmntopt(&mnt, MNTOPT_REMOUNT) &&
6765                     zfs_is_mounted(zhp, NULL)) {
6766                         if (!explicit)
6767                                 return (0);
6768
6769                         (void) fprintf(stderr, gettext("cannot mount "
6770                             "'%s': filesystem already mounted\n"),
6771                             zfs_get_name(zhp));
6772                         return (1);
6773                 }
6774
6775                 if (zfs_mount(zhp, options, flags) != 0)
6776                         return (1);
6777                 break;
6778         }
6779
6780         return (0);
6781 }
6782
6783 /*
6784  * Reports progress in the form "(current/total)".  Not thread-safe.
6785  */
6786 static void
6787 report_mount_progress(int current, int total)
6788 {
6789         static time_t last_progress_time = 0;
6790         time_t now = time(NULL);
6791         char info[32];
6792
6793         /* report 1..n instead of 0..n-1 */
6794         ++current;
6795
6796         /* display header if we're here for the first time */
6797         if (current == 1) {
6798                 set_progress_header(gettext("Mounting ZFS filesystems"));
6799         } else if (current != total && last_progress_time + MOUNT_TIME >= now) {
6800                 /* too soon to report again */
6801                 return;
6802         }
6803
6804         last_progress_time = now;
6805
6806         (void) sprintf(info, "(%d/%d)", current, total);
6807
6808         if (current == total)
6809                 finish_progress(info);
6810         else
6811                 update_progress(info);
6812 }
6813
6814 /*
6815  * zfs_foreach_mountpoint() callback that mounts or shares one filesystem and
6816  * updates the progress meter.
6817  */
6818 static int
6819 share_mount_one_cb(zfs_handle_t *zhp, void *arg)
6820 {
6821         share_mount_state_t *sms = arg;
6822         int ret;
6823
6824         ret = share_mount_one(zhp, sms->sm_op, sms->sm_flags, sms->sm_proto,
6825             B_FALSE, sms->sm_options);
6826
6827         pthread_mutex_lock(&sms->sm_lock);
6828         if (ret != 0)
6829                 sms->sm_status = ret;
6830         sms->sm_done++;
6831         if (sms->sm_verbose)
6832                 report_mount_progress(sms->sm_done, sms->sm_total);
6833         pthread_mutex_unlock(&sms->sm_lock);
6834         return (ret);
6835 }
6836
6837 static void
6838 append_options(char *mntopts, char *newopts)
6839 {
6840         int len = strlen(mntopts);
6841
6842         /* original length plus new string to append plus 1 for the comma */
6843         if (len + 1 + strlen(newopts) >= MNT_LINE_MAX) {
6844                 (void) fprintf(stderr, gettext("the opts argument for "
6845                     "'%s' option is too long (more than %d chars)\n"),
6846                     "-o", MNT_LINE_MAX);
6847                 usage(B_FALSE);
6848         }
6849
6850         if (*mntopts)
6851                 mntopts[len++] = ',';
6852
6853         (void) strcpy(&mntopts[len], newopts);
6854 }
6855
6856 static int
6857 share_mount(int op, int argc, char **argv)
6858 {
6859         int do_all = 0;
6860         boolean_t verbose = B_FALSE;
6861         int c, ret = 0;
6862         char *options = NULL;
6863         int flags = 0;
6864
6865         /* check options */
6866         while ((c = getopt(argc, argv, op == OP_MOUNT ? ":alvo:Of" : "al"))
6867             != -1) {
6868                 switch (c) {
6869                 case 'a':
6870                         do_all = 1;
6871                         break;
6872                 case 'v':
6873                         verbose = B_TRUE;
6874                         break;
6875                 case 'l':
6876                         flags |= MS_CRYPT;
6877                         break;
6878                 case 'o':
6879                         if (*optarg == '\0') {
6880                                 (void) fprintf(stderr, gettext("empty mount "
6881                                     "options (-o) specified\n"));
6882                                 usage(B_FALSE);
6883                         }
6884
6885                         if (options == NULL)
6886                                 options = safe_malloc(MNT_LINE_MAX + 1);
6887
6888                         /* option validation is done later */
6889                         append_options(options, optarg);
6890                         break;
6891                 case 'O':
6892                         flags |= MS_OVERLAY;
6893                         break;
6894                 case 'f':
6895                         flags |= MS_FORCE;
6896                         break;
6897                 case ':':
6898                         (void) fprintf(stderr, gettext("missing argument for "
6899                             "'%c' option\n"), optopt);
6900                         usage(B_FALSE);
6901                         break;
6902                 case '?':
6903                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6904                             optopt);
6905                         usage(B_FALSE);
6906                 }
6907         }
6908
6909         argc -= optind;
6910         argv += optind;
6911
6912         /* check number of arguments */
6913         if (do_all) {
6914                 char *protocol = NULL;
6915
6916                 if (op == OP_SHARE && argc > 0) {
6917                         if (strcmp(argv[0], "nfs") != 0 &&
6918                             strcmp(argv[0], "smb") != 0) {
6919                                 (void) fprintf(stderr, gettext("share type "
6920                                     "must be 'nfs' or 'smb'\n"));
6921                                 usage(B_FALSE);
6922                         }
6923                         protocol = argv[0];
6924                         argc--;
6925                         argv++;
6926                 }
6927
6928                 if (argc != 0) {
6929                         (void) fprintf(stderr, gettext("too many arguments\n"));
6930                         usage(B_FALSE);
6931                 }
6932
6933                 start_progress_timer();
6934                 get_all_cb_t cb = { 0 };
6935                 get_all_datasets(&cb, verbose);
6936
6937                 if (cb.cb_used == 0) {
6938                         if (options != NULL)
6939                                 free(options);
6940                         return (0);
6941                 }
6942
6943                 share_mount_state_t share_mount_state = { 0 };
6944                 share_mount_state.sm_op = op;
6945                 share_mount_state.sm_verbose = verbose;
6946                 share_mount_state.sm_flags = flags;
6947                 share_mount_state.sm_options = options;
6948                 share_mount_state.sm_proto = protocol;
6949                 share_mount_state.sm_total = cb.cb_used;
6950                 pthread_mutex_init(&share_mount_state.sm_lock, NULL);
6951
6952                 /*
6953                  * libshare isn't mt-safe, so only do the operation in parallel
6954                  * if we're mounting. Additionally, the key-loading option must
6955                  * be serialized so that we can prompt the user for their keys
6956                  * in a consistent manner.
6957                  */
6958                 zfs_foreach_mountpoint(g_zfs, cb.cb_handles, cb.cb_used,
6959                     share_mount_one_cb, &share_mount_state,
6960                     op == OP_MOUNT && !(flags & MS_CRYPT));
6961                 zfs_commit_all_shares();
6962
6963                 ret = share_mount_state.sm_status;
6964
6965                 for (int i = 0; i < cb.cb_used; i++)
6966                         zfs_close(cb.cb_handles[i]);
6967                 free(cb.cb_handles);
6968         } else if (argc == 0) {
6969                 struct mnttab entry;
6970
6971                 if ((op == OP_SHARE) || (options != NULL)) {
6972                         (void) fprintf(stderr, gettext("missing filesystem "
6973                             "argument (specify -a for all)\n"));
6974                         usage(B_FALSE);
6975                 }
6976
6977                 /*
6978                  * When mount is given no arguments, go through
6979                  * /proc/self/mounts and display any active ZFS mounts.
6980                  * We hide any snapshots, since they are controlled
6981                  * automatically.
6982                  */
6983
6984                 /* Reopen MNTTAB to prevent reading stale data from open file */
6985                 if (freopen(MNTTAB, "r", mnttab_file) == NULL) {
6986                         if (options != NULL)
6987                                 free(options);
6988                         return (ENOENT);
6989                 }
6990
6991                 while (getmntent(mnttab_file, &entry) == 0) {
6992                         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0 ||
6993                             strchr(entry.mnt_special, '@') != NULL)
6994                                 continue;
6995
6996                         (void) printf("%-30s  %s\n", entry.mnt_special,
6997                             entry.mnt_mountp);
6998                 }
6999
7000         } else {
7001                 zfs_handle_t *zhp;
7002
7003                 if (argc > 1) {
7004                         (void) fprintf(stderr,
7005                             gettext("too many arguments\n"));
7006                         usage(B_FALSE);
7007                 }
7008
7009                 if ((zhp = zfs_open(g_zfs, argv[0],
7010                     ZFS_TYPE_FILESYSTEM)) == NULL) {
7011                         ret = 1;
7012                 } else {
7013                         ret = share_mount_one(zhp, op, flags, NULL, B_TRUE,
7014                             options);
7015                         zfs_commit_all_shares();
7016                         zfs_close(zhp);
7017                 }
7018         }
7019
7020         if (options != NULL)
7021                 free(options);
7022
7023         return (ret);
7024 }
7025
7026 /*
7027  * zfs mount -a [nfs]
7028  * zfs mount filesystem
7029  *
7030  * Mount all filesystems, or mount the given filesystem.
7031  */
7032 static int
7033 zfs_do_mount(int argc, char **argv)
7034 {
7035         return (share_mount(OP_MOUNT, argc, argv));
7036 }
7037
7038 /*
7039  * zfs share -a [nfs | smb]
7040  * zfs share filesystem
7041  *
7042  * Share all filesystems, or share the given filesystem.
7043  */
7044 static int
7045 zfs_do_share(int argc, char **argv)
7046 {
7047         return (share_mount(OP_SHARE, argc, argv));
7048 }
7049
7050 typedef struct unshare_unmount_node {
7051         zfs_handle_t    *un_zhp;
7052         char            *un_mountp;
7053         uu_avl_node_t   un_avlnode;
7054 } unshare_unmount_node_t;
7055
7056 /* ARGSUSED */
7057 static int
7058 unshare_unmount_compare(const void *larg, const void *rarg, void *unused)
7059 {
7060         const unshare_unmount_node_t *l = larg;
7061         const unshare_unmount_node_t *r = rarg;
7062
7063         return (strcmp(l->un_mountp, r->un_mountp));
7064 }
7065
7066 /*
7067  * Convenience routine used by zfs_do_umount() and manual_unmount().  Given an
7068  * absolute path, find the entry /proc/self/mounts, verify that it's a
7069  * ZFS filesystem, and unmount it appropriately.
7070  */
7071 static int
7072 unshare_unmount_path(int op, char *path, int flags, boolean_t is_manual)
7073 {
7074         zfs_handle_t *zhp;
7075         int ret = 0;
7076         struct stat64 statbuf;
7077         struct extmnttab entry;
7078         const char *cmdname = (op == OP_SHARE) ? "unshare" : "unmount";
7079         ino_t path_inode;
7080
7081         /*
7082          * Search for the given (major,minor) pair in the mount table.
7083          */
7084
7085         /* Reopen MNTTAB to prevent reading stale data from open file */
7086         if (freopen(MNTTAB, "r", mnttab_file) == NULL)
7087                 return (ENOENT);
7088
7089         if (getextmntent(path, &entry, &statbuf) != 0) {
7090                 if (op == OP_SHARE) {
7091                         (void) fprintf(stderr, gettext("cannot %s '%s': not "
7092                             "currently mounted\n"), cmdname, path);
7093                         return (1);
7094                 }
7095                 (void) fprintf(stderr, gettext("warning: %s not in"
7096                     "/proc/self/mounts\n"), path);
7097                 if ((ret = umount2(path, flags)) != 0)
7098                         (void) fprintf(stderr, gettext("%s: %s\n"), path,
7099                             strerror(errno));
7100                 return (ret != 0);
7101         }
7102         path_inode = statbuf.st_ino;
7103
7104         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) {
7105                 (void) fprintf(stderr, gettext("cannot %s '%s': not a ZFS "
7106                     "filesystem\n"), cmdname, path);
7107                 return (1);
7108         }
7109
7110         if ((zhp = zfs_open(g_zfs, entry.mnt_special,
7111             ZFS_TYPE_FILESYSTEM)) == NULL)
7112                 return (1);
7113
7114         ret = 1;
7115         if (stat64(entry.mnt_mountp, &statbuf) != 0) {
7116                 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
7117                     cmdname, path, strerror(errno));
7118                 goto out;
7119         } else if (statbuf.st_ino != path_inode) {
7120                 (void) fprintf(stderr, gettext("cannot "
7121                     "%s '%s': not a mountpoint\n"), cmdname, path);
7122                 goto out;
7123         }
7124
7125         if (op == OP_SHARE) {
7126                 char nfs_mnt_prop[ZFS_MAXPROPLEN];
7127                 char smbshare_prop[ZFS_MAXPROPLEN];
7128
7129                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, nfs_mnt_prop,
7130                     sizeof (nfs_mnt_prop), NULL, NULL, 0, B_FALSE) == 0);
7131                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshare_prop,
7132                     sizeof (smbshare_prop), NULL, NULL, 0, B_FALSE) == 0);
7133
7134                 if (strcmp(nfs_mnt_prop, "off") == 0 &&
7135                     strcmp(smbshare_prop, "off") == 0) {
7136                         (void) fprintf(stderr, gettext("cannot unshare "
7137                             "'%s': legacy share\n"), path);
7138                         (void) fprintf(stderr, gettext("use exportfs(8) "
7139                             "or smbcontrol(1) to unshare this filesystem\n"));
7140                 } else if (!zfs_is_shared(zhp)) {
7141                         (void) fprintf(stderr, gettext("cannot unshare '%s': "
7142                             "not currently shared\n"), path);
7143                 } else {
7144                         ret = zfs_unshareall_bypath(zhp, path);
7145                         zfs_commit_all_shares();
7146                 }
7147         } else {
7148                 char mtpt_prop[ZFS_MAXPROPLEN];
7149
7150                 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mtpt_prop,
7151                     sizeof (mtpt_prop), NULL, NULL, 0, B_FALSE) == 0);
7152
7153                 if (is_manual) {
7154                         ret = zfs_unmount(zhp, NULL, flags);
7155                 } else if (strcmp(mtpt_prop, "legacy") == 0) {
7156                         (void) fprintf(stderr, gettext("cannot unmount "
7157                             "'%s': legacy mountpoint\n"),
7158                             zfs_get_name(zhp));
7159                         (void) fprintf(stderr, gettext("use umount(8) "
7160                             "to unmount this filesystem\n"));
7161                 } else {
7162                         ret = zfs_unmountall(zhp, flags);
7163                 }
7164         }
7165
7166 out:
7167         zfs_close(zhp);
7168
7169         return (ret != 0);
7170 }
7171
7172 /*
7173  * Generic callback for unsharing or unmounting a filesystem.
7174  */
7175 static int
7176 unshare_unmount(int op, int argc, char **argv)
7177 {
7178         int do_all = 0;
7179         int flags = 0;
7180         int ret = 0;
7181         int c;
7182         zfs_handle_t *zhp;
7183         char nfs_mnt_prop[ZFS_MAXPROPLEN];
7184         char sharesmb[ZFS_MAXPROPLEN];
7185
7186         /* check options */
7187         while ((c = getopt(argc, argv, op == OP_SHARE ? ":a" : "afu")) != -1) {
7188                 switch (c) {
7189                 case 'a':
7190                         do_all = 1;
7191                         break;
7192                 case 'f':
7193                         flags |= MS_FORCE;
7194                         break;
7195                 case 'u':
7196                         flags |= MS_CRYPT;
7197                         break;
7198                 case ':':
7199                         (void) fprintf(stderr, gettext("missing argument for "
7200                             "'%c' option\n"), optopt);
7201                         usage(B_FALSE);
7202                         break;
7203                 case '?':
7204                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
7205                             optopt);
7206                         usage(B_FALSE);
7207                 }
7208         }
7209
7210         argc -= optind;
7211         argv += optind;
7212
7213         if (do_all) {
7214                 /*
7215                  * We could make use of zfs_for_each() to walk all datasets in
7216                  * the system, but this would be very inefficient, especially
7217                  * since we would have to linearly search /proc/self/mounts for
7218                  * each one. Instead, do one pass through /proc/self/mounts
7219                  * looking for zfs entries and call zfs_unmount() for each one.
7220                  *
7221                  * Things get a little tricky if the administrator has created
7222                  * mountpoints beneath other ZFS filesystems.  In this case, we
7223                  * have to unmount the deepest filesystems first.  To accomplish
7224                  * this, we place all the mountpoints in an AVL tree sorted by
7225                  * the special type (dataset name), and walk the result in
7226                  * reverse to make sure to get any snapshots first.
7227                  */
7228                 struct mnttab entry;
7229                 uu_avl_pool_t *pool;
7230                 uu_avl_t *tree = NULL;
7231                 unshare_unmount_node_t *node;
7232                 uu_avl_index_t idx;
7233                 uu_avl_walk_t *walk;
7234                 char *protocol = NULL;
7235
7236                 if (op == OP_SHARE && argc > 0) {
7237                         if (strcmp(argv[0], "nfs") != 0 &&
7238                             strcmp(argv[0], "smb") != 0) {
7239                                 (void) fprintf(stderr, gettext("share type "
7240                                     "must be 'nfs' or 'smb'\n"));
7241                                 usage(B_FALSE);
7242                         }
7243                         protocol = argv[0];
7244                         argc--;
7245                         argv++;
7246                 }
7247
7248                 if (argc != 0) {
7249                         (void) fprintf(stderr, gettext("too many arguments\n"));
7250                         usage(B_FALSE);
7251                 }
7252
7253                 if (((pool = uu_avl_pool_create("unmount_pool",
7254                     sizeof (unshare_unmount_node_t),
7255                     offsetof(unshare_unmount_node_t, un_avlnode),
7256                     unshare_unmount_compare, UU_DEFAULT)) == NULL) ||
7257                     ((tree = uu_avl_create(pool, NULL, UU_DEFAULT)) == NULL))
7258                         nomem();
7259
7260                 /* Reopen MNTTAB to prevent reading stale data from open file */
7261                 if (freopen(MNTTAB, "r", mnttab_file) == NULL)
7262                         return (ENOENT);
7263
7264                 while (getmntent(mnttab_file, &entry) == 0) {
7265
7266                         /* ignore non-ZFS entries */
7267                         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0)
7268                                 continue;
7269
7270                         /* ignore snapshots */
7271                         if (strchr(entry.mnt_special, '@') != NULL)
7272                                 continue;
7273
7274                         if ((zhp = zfs_open(g_zfs, entry.mnt_special,
7275                             ZFS_TYPE_FILESYSTEM)) == NULL) {
7276                                 ret = 1;
7277                                 continue;
7278                         }
7279
7280                         /*
7281                          * Ignore datasets that are excluded/restricted by
7282                          * parent pool name.
7283                          */
7284                         if (zpool_skip_pool(zfs_get_pool_name(zhp))) {
7285                                 zfs_close(zhp);
7286                                 continue;
7287                         }
7288
7289                         switch (op) {
7290                         case OP_SHARE:
7291                                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
7292                                     nfs_mnt_prop,
7293                                     sizeof (nfs_mnt_prop),
7294                                     NULL, NULL, 0, B_FALSE) == 0);
7295                                 if (strcmp(nfs_mnt_prop, "off") != 0)
7296                                         break;
7297                                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
7298                                     nfs_mnt_prop,
7299                                     sizeof (nfs_mnt_prop),
7300                                     NULL, NULL, 0, B_FALSE) == 0);
7301                                 if (strcmp(nfs_mnt_prop, "off") == 0)
7302                                         continue;
7303                                 break;
7304                         case OP_MOUNT:
7305                                 /* Ignore legacy mounts */
7306                                 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT,
7307                                     nfs_mnt_prop,
7308                                     sizeof (nfs_mnt_prop),
7309                                     NULL, NULL, 0, B_FALSE) == 0);
7310                                 if (strcmp(nfs_mnt_prop, "legacy") == 0)
7311                                         continue;
7312                                 /* Ignore canmount=noauto mounts */
7313                                 if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) ==
7314                                     ZFS_CANMOUNT_NOAUTO)
7315                                         continue;
7316                         default:
7317                                 break;
7318                         }
7319
7320                         node = safe_malloc(sizeof (unshare_unmount_node_t));
7321                         node->un_zhp = zhp;
7322                         node->un_mountp = safe_strdup(entry.mnt_mountp);
7323
7324                         uu_avl_node_init(node, &node->un_avlnode, pool);
7325
7326                         if (uu_avl_find(tree, node, NULL, &idx) == NULL) {
7327                                 uu_avl_insert(tree, node, idx);
7328                         } else {
7329                                 zfs_close(node->un_zhp);
7330                                 free(node->un_mountp);
7331                                 free(node);
7332                         }
7333                 }
7334
7335                 /*
7336                  * Walk the AVL tree in reverse, unmounting each filesystem and
7337                  * removing it from the AVL tree in the process.
7338                  */
7339                 if ((walk = uu_avl_walk_start(tree,
7340                     UU_WALK_REVERSE | UU_WALK_ROBUST)) == NULL)
7341                         nomem();
7342
7343                 while ((node = uu_avl_walk_next(walk)) != NULL) {
7344                         const char *mntarg = NULL;
7345
7346                         uu_avl_remove(tree, node);
7347                         switch (op) {
7348                         case OP_SHARE:
7349                                 if (zfs_unshareall_bytype(node->un_zhp,
7350                                     node->un_mountp, protocol) != 0)
7351                                         ret = 1;
7352                                 break;
7353
7354                         case OP_MOUNT:
7355                                 if (zfs_unmount(node->un_zhp,
7356                                     mntarg, flags) != 0)
7357                                         ret = 1;
7358                                 break;
7359                         }
7360
7361                         zfs_close(node->un_zhp);
7362                         free(node->un_mountp);
7363                         free(node);
7364                 }
7365
7366                 if (op == OP_SHARE)
7367                         zfs_commit_shares(protocol);
7368
7369                 uu_avl_walk_end(walk);
7370                 uu_avl_destroy(tree);
7371                 uu_avl_pool_destroy(pool);
7372
7373         } else {
7374                 if (argc != 1) {
7375                         if (argc == 0)
7376                                 (void) fprintf(stderr,
7377                                     gettext("missing filesystem argument\n"));
7378                         else
7379                                 (void) fprintf(stderr,
7380                                     gettext("too many arguments\n"));
7381                         usage(B_FALSE);
7382                 }
7383
7384                 /*
7385                  * We have an argument, but it may be a full path or a ZFS
7386                  * filesystem.  Pass full paths off to unmount_path() (shared by
7387                  * manual_unmount), otherwise open the filesystem and pass to
7388                  * zfs_unmount().
7389                  */
7390                 if (argv[0][0] == '/')
7391                         return (unshare_unmount_path(op, argv[0],
7392                             flags, B_FALSE));
7393
7394                 if ((zhp = zfs_open(g_zfs, argv[0],
7395                     ZFS_TYPE_FILESYSTEM)) == NULL)
7396                         return (1);
7397
7398                 verify(zfs_prop_get(zhp, op == OP_SHARE ?
7399                     ZFS_PROP_SHARENFS : ZFS_PROP_MOUNTPOINT,
7400                     nfs_mnt_prop, sizeof (nfs_mnt_prop), NULL,
7401                     NULL, 0, B_FALSE) == 0);
7402
7403                 switch (op) {
7404                 case OP_SHARE:
7405                         verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
7406                             nfs_mnt_prop,
7407                             sizeof (nfs_mnt_prop),
7408                             NULL, NULL, 0, B_FALSE) == 0);
7409                         verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
7410                             sharesmb, sizeof (sharesmb), NULL, NULL,
7411                             0, B_FALSE) == 0);
7412
7413                         if (strcmp(nfs_mnt_prop, "off") == 0 &&
7414                             strcmp(sharesmb, "off") == 0) {
7415                                 (void) fprintf(stderr, gettext("cannot "
7416                                     "unshare '%s': legacy share\n"),
7417                                     zfs_get_name(zhp));
7418                                 (void) fprintf(stderr, gettext("use "
7419                                     "unshare(1M) to unshare this "
7420                                     "filesystem\n"));
7421                                 ret = 1;
7422                         } else if (!zfs_is_shared(zhp)) {
7423                                 (void) fprintf(stderr, gettext("cannot "
7424                                     "unshare '%s': not currently "
7425                                     "shared\n"), zfs_get_name(zhp));
7426                                 ret = 1;
7427                         } else if (zfs_unshareall(zhp) != 0) {
7428                                 ret = 1;
7429                         }
7430                         break;
7431
7432                 case OP_MOUNT:
7433                         if (strcmp(nfs_mnt_prop, "legacy") == 0) {
7434                                 (void) fprintf(stderr, gettext("cannot "
7435                                     "unmount '%s': legacy "
7436                                     "mountpoint\n"), zfs_get_name(zhp));
7437                                 (void) fprintf(stderr, gettext("use "
7438                                     "umount(1M) to unmount this "
7439                                     "filesystem\n"));
7440                                 ret = 1;
7441                         } else if (!zfs_is_mounted(zhp, NULL)) {
7442                                 (void) fprintf(stderr, gettext("cannot "
7443                                     "unmount '%s': not currently "
7444                                     "mounted\n"),
7445                                     zfs_get_name(zhp));
7446                                 ret = 1;
7447                         } else if (zfs_unmountall(zhp, flags) != 0) {
7448                                 ret = 1;
7449                         }
7450                         break;
7451                 }
7452
7453                 zfs_close(zhp);
7454         }
7455
7456         return (ret);
7457 }
7458
7459 /*
7460  * zfs unmount [-fu] -a
7461  * zfs unmount [-fu] filesystem
7462  *
7463  * Unmount all filesystems, or a specific ZFS filesystem.
7464  */
7465 static int
7466 zfs_do_unmount(int argc, char **argv)
7467 {
7468         return (unshare_unmount(OP_MOUNT, argc, argv));
7469 }
7470
7471 /*
7472  * zfs unshare -a
7473  * zfs unshare filesystem
7474  *
7475  * Unshare all filesystems, or a specific ZFS filesystem.
7476  */
7477 static int
7478 zfs_do_unshare(int argc, char **argv)
7479 {
7480         return (unshare_unmount(OP_SHARE, argc, argv));
7481 }
7482
7483 static int
7484 find_command_idx(char *command, int *idx)
7485 {
7486         int i;
7487
7488         for (i = 0; i < NCOMMAND; i++) {
7489                 if (command_table[i].name == NULL)
7490                         continue;
7491
7492                 if (strcmp(command, command_table[i].name) == 0) {
7493                         *idx = i;
7494                         return (0);
7495                 }
7496         }
7497         return (1);
7498 }
7499
7500 static int
7501 zfs_do_diff(int argc, char **argv)
7502 {
7503         zfs_handle_t *zhp;
7504         int flags = 0;
7505         char *tosnap = NULL;
7506         char *fromsnap = NULL;
7507         char *atp, *copy;
7508         int err = 0;
7509         int c;
7510         struct sigaction sa;
7511
7512         while ((c = getopt(argc, argv, "FHt")) != -1) {
7513                 switch (c) {
7514                 case 'F':
7515                         flags |= ZFS_DIFF_CLASSIFY;
7516                         break;
7517                 case 'H':
7518                         flags |= ZFS_DIFF_PARSEABLE;
7519                         break;
7520                 case 't':
7521                         flags |= ZFS_DIFF_TIMESTAMP;
7522                         break;
7523                 default:
7524                         (void) fprintf(stderr,
7525                             gettext("invalid option '%c'\n"), optopt);
7526                         usage(B_FALSE);
7527                 }
7528         }
7529
7530         argc -= optind;
7531         argv += optind;
7532
7533         if (argc < 1) {
7534                 (void) fprintf(stderr,
7535                     gettext("must provide at least one snapshot name\n"));
7536                 usage(B_FALSE);
7537         }
7538
7539         if (argc > 2) {
7540                 (void) fprintf(stderr, gettext("too many arguments\n"));
7541                 usage(B_FALSE);
7542         }
7543
7544         fromsnap = argv[0];
7545         tosnap = (argc == 2) ? argv[1] : NULL;
7546
7547         copy = NULL;
7548         if (*fromsnap != '@')
7549                 copy = strdup(fromsnap);
7550         else if (tosnap)
7551                 copy = strdup(tosnap);
7552         if (copy == NULL)
7553                 usage(B_FALSE);
7554
7555         if ((atp = strchr(copy, '@')) != NULL)
7556                 *atp = '\0';
7557
7558         if ((zhp = zfs_open(g_zfs, copy, ZFS_TYPE_FILESYSTEM)) == NULL) {
7559                 free(copy);
7560                 return (1);
7561         }
7562         free(copy);
7563
7564         /*
7565          * Ignore SIGPIPE so that the library can give us
7566          * information on any failure
7567          */
7568         if (sigemptyset(&sa.sa_mask) == -1) {
7569                 err = errno;
7570                 goto out;
7571         }
7572         sa.sa_flags = 0;
7573         sa.sa_handler = SIG_IGN;
7574         if (sigaction(SIGPIPE, &sa, NULL) == -1) {
7575                 err = errno;
7576                 goto out;
7577         }
7578
7579         err = zfs_show_diffs(zhp, STDOUT_FILENO, fromsnap, tosnap, flags);
7580 out:
7581         zfs_close(zhp);
7582
7583         return (err != 0);
7584 }
7585
7586 /*
7587  * zfs bookmark <fs@source>|<fs#source> <fs#bookmark>
7588  *
7589  * Creates a bookmark with the given name from the source snapshot
7590  * or creates a copy of an existing source bookmark.
7591  */
7592 static int
7593 zfs_do_bookmark(int argc, char **argv)
7594 {
7595         char *source, *bookname;
7596         char expbuf[ZFS_MAX_DATASET_NAME_LEN];
7597         int source_type;
7598         nvlist_t *nvl;
7599         int ret = 0;
7600         int c;
7601
7602         /* check options */
7603         while ((c = getopt(argc, argv, "")) != -1) {
7604                 switch (c) {
7605                 case '?':
7606                         (void) fprintf(stderr,
7607                             gettext("invalid option '%c'\n"), optopt);
7608                         goto usage;
7609                 }
7610         }
7611
7612         argc -= optind;
7613         argv += optind;
7614
7615         /* check number of arguments */
7616         if (argc < 1) {
7617                 (void) fprintf(stderr, gettext("missing source argument\n"));
7618                 goto usage;
7619         }
7620         if (argc < 2) {
7621                 (void) fprintf(stderr, gettext("missing bookmark argument\n"));
7622                 goto usage;
7623         }
7624
7625         source = argv[0];
7626         bookname = argv[1];
7627
7628         if (strchr(source, '@') == NULL && strchr(source, '#') == NULL) {
7629                 (void) fprintf(stderr,
7630                     gettext("invalid source name '%s': "
7631                     "must contain a '@' or '#'\n"), source);
7632                 goto usage;
7633         }
7634         if (strchr(bookname, '#') == NULL) {
7635                 (void) fprintf(stderr,
7636                     gettext("invalid bookmark name '%s': "
7637                     "must contain a '#'\n"), bookname);
7638                 goto usage;
7639         }
7640
7641         /*
7642          * expand source or bookname to full path:
7643          * one of them may be specified as short name
7644          */
7645         {
7646                 char **expand;
7647                 char *source_short, *bookname_short;
7648                 source_short = strpbrk(source, "@#");
7649                 bookname_short = strpbrk(bookname, "#");
7650                 if (source_short == source &&
7651                     bookname_short == bookname) {
7652                         (void) fprintf(stderr, gettext(
7653                             "either source or bookmark must be specified as "
7654                             "full dataset paths"));
7655                         goto usage;
7656                 } else if (source_short != source &&
7657                     bookname_short != bookname) {
7658                         expand = NULL;
7659                 } else if (source_short != source) {
7660                         strlcpy(expbuf, source, sizeof (expbuf));
7661                         expand = &bookname;
7662                 } else if (bookname_short != bookname) {
7663                         strlcpy(expbuf, bookname, sizeof (expbuf));
7664                         expand = &source;
7665                 } else {
7666                         abort();
7667                 }
7668                 if (expand != NULL) {
7669                         *strpbrk(expbuf, "@#") = '\0'; /* dataset name in buf */
7670                         (void) strlcat(expbuf, *expand, sizeof (expbuf));
7671                         *expand = expbuf;
7672                 }
7673         }
7674
7675         /* determine source type */
7676         switch (*strpbrk(source, "@#")) {
7677                 case '@': source_type = ZFS_TYPE_SNAPSHOT; break;
7678                 case '#': source_type = ZFS_TYPE_BOOKMARK; break;
7679                 default: abort();
7680         }
7681
7682         /* test the source exists */
7683         zfs_handle_t *zhp;
7684         zhp = zfs_open(g_zfs, source, source_type);
7685         if (zhp == NULL)
7686                 goto usage;
7687         zfs_close(zhp);
7688
7689         nvl = fnvlist_alloc();
7690         fnvlist_add_string(nvl, bookname, source);
7691         ret = lzc_bookmark(nvl, NULL);
7692         fnvlist_free(nvl);
7693
7694         if (ret != 0) {
7695                 const char *err_msg = NULL;
7696                 char errbuf[1024];
7697
7698                 (void) snprintf(errbuf, sizeof (errbuf),
7699                     dgettext(TEXT_DOMAIN,
7700                     "cannot create bookmark '%s'"), bookname);
7701
7702                 switch (ret) {
7703                 case EXDEV:
7704                         err_msg = "bookmark is in a different pool";
7705                         break;
7706                 case ZFS_ERR_BOOKMARK_SOURCE_NOT_ANCESTOR:
7707                         err_msg = "source is not an ancestor of the "
7708                             "new bookmark's dataset";
7709                         break;
7710                 case EEXIST:
7711                         err_msg = "bookmark exists";
7712                         break;
7713                 case EINVAL:
7714                         err_msg = "invalid argument";
7715                         break;
7716                 case ENOTSUP:
7717                         err_msg = "bookmark feature not enabled";
7718                         break;
7719                 case ENOSPC:
7720                         err_msg = "out of space";
7721                         break;
7722                 case ENOENT:
7723                         err_msg = "dataset does not exist";
7724                         break;
7725                 default:
7726                         (void) zfs_standard_error(g_zfs, ret, errbuf);
7727                         break;
7728                 }
7729                 if (err_msg != NULL) {
7730                         (void) fprintf(stderr, "%s: %s\n", errbuf,
7731                             dgettext(TEXT_DOMAIN, err_msg));
7732                 }
7733         }
7734
7735         return (ret != 0);
7736
7737 usage:
7738         usage(B_FALSE);
7739         return (-1);
7740 }
7741
7742 static int
7743 zfs_do_channel_program(int argc, char **argv)
7744 {
7745         int ret, fd, c;
7746         char *progbuf, *filename, *poolname;
7747         size_t progsize, progread;
7748         nvlist_t *outnvl = NULL;
7749         uint64_t instrlimit = ZCP_DEFAULT_INSTRLIMIT;
7750         uint64_t memlimit = ZCP_DEFAULT_MEMLIMIT;
7751         boolean_t sync_flag = B_TRUE, json_output = B_FALSE;
7752         zpool_handle_t *zhp;
7753
7754         /* check options */
7755         while ((c = getopt(argc, argv, "nt:m:j")) != -1) {
7756                 switch (c) {
7757                 case 't':
7758                 case 'm': {
7759                         uint64_t arg;
7760                         char *endp;
7761
7762                         errno = 0;
7763                         arg = strtoull(optarg, &endp, 0);
7764                         if (errno != 0 || *endp != '\0') {
7765                                 (void) fprintf(stderr, gettext(
7766                                     "invalid argument "
7767                                     "'%s': expected integer\n"), optarg);
7768                                 goto usage;
7769                         }
7770
7771                         if (c == 't') {
7772                                 instrlimit = arg;
7773                         } else {
7774                                 ASSERT3U(c, ==, 'm');
7775                                 memlimit = arg;
7776                         }
7777                         break;
7778                 }
7779                 case 'n': {
7780                         sync_flag = B_FALSE;
7781                         break;
7782                 }
7783                 case 'j': {
7784                         json_output = B_TRUE;
7785                         break;
7786                 }
7787                 case '?':
7788                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
7789                             optopt);
7790                         goto usage;
7791                 }
7792         }
7793
7794         argc -= optind;
7795         argv += optind;
7796
7797         if (argc < 2) {
7798                 (void) fprintf(stderr,
7799                     gettext("invalid number of arguments\n"));
7800                 goto usage;
7801         }
7802
7803         poolname = argv[0];
7804         filename = argv[1];
7805         if (strcmp(filename, "-") == 0) {
7806                 fd = 0;
7807                 filename = "standard input";
7808         } else if ((fd = open(filename, O_RDONLY)) < 0) {
7809                 (void) fprintf(stderr, gettext("cannot open '%s': %s\n"),
7810                     filename, strerror(errno));
7811                 return (1);
7812         }
7813
7814         if ((zhp = zpool_open(g_zfs, poolname)) == NULL) {
7815                 (void) fprintf(stderr, gettext("cannot open pool '%s'\n"),
7816                     poolname);
7817                 if (fd != 0)
7818                         (void) close(fd);
7819                 return (1);
7820         }
7821         zpool_close(zhp);
7822
7823         /*
7824          * Read in the channel program, expanding the program buffer as
7825          * necessary.
7826          */
7827         progread = 0;
7828         progsize = 1024;
7829         progbuf = safe_malloc(progsize);
7830         do {
7831                 ret = read(fd, progbuf + progread, progsize - progread);
7832                 progread += ret;
7833                 if (progread == progsize && ret > 0) {
7834                         progsize *= 2;
7835                         progbuf = safe_realloc(progbuf, progsize);
7836                 }
7837         } while (ret > 0);
7838
7839         if (fd != 0)
7840                 (void) close(fd);
7841         if (ret < 0) {
7842                 free(progbuf);
7843                 (void) fprintf(stderr,
7844                     gettext("cannot read '%s': %s\n"),
7845                     filename, strerror(errno));
7846                 return (1);
7847         }
7848         progbuf[progread] = '\0';
7849
7850         /*
7851          * Any remaining arguments are passed as arguments to the lua script as
7852          * a string array:
7853          * {
7854          *      "argv" -> [ "arg 1", ... "arg n" ],
7855          * }
7856          */
7857         nvlist_t *argnvl = fnvlist_alloc();
7858         fnvlist_add_string_array(argnvl, ZCP_ARG_CLIARGV, argv + 2, argc - 2);
7859
7860         if (sync_flag) {
7861                 ret = lzc_channel_program(poolname, progbuf,
7862                     instrlimit, memlimit, argnvl, &outnvl);
7863         } else {
7864                 ret = lzc_channel_program_nosync(poolname, progbuf,
7865                     instrlimit, memlimit, argnvl, &outnvl);
7866         }
7867
7868         if (ret != 0) {
7869                 /*
7870                  * On error, report the error message handed back by lua if one
7871                  * exists.  Otherwise, generate an appropriate error message,
7872                  * falling back on strerror() for an unexpected return code.
7873                  */
7874                 char *errstring = NULL;
7875                 const char *msg = gettext("Channel program execution failed");
7876                 uint64_t instructions = 0;
7877                 if (outnvl != NULL && nvlist_exists(outnvl, ZCP_RET_ERROR)) {
7878                         (void) nvlist_lookup_string(outnvl,
7879                             ZCP_RET_ERROR, &errstring);
7880                         if (errstring == NULL)
7881                                 errstring = strerror(ret);
7882                         if (ret == ETIME) {
7883                                 (void) nvlist_lookup_uint64(outnvl,
7884                                     ZCP_ARG_INSTRLIMIT, &instructions);
7885                         }
7886                 } else {
7887                         switch (ret) {
7888                         case EINVAL:
7889                                 errstring =
7890                                     "Invalid instruction or memory limit.";
7891                                 break;
7892                         case ENOMEM:
7893                                 errstring = "Return value too large.";
7894                                 break;
7895                         case ENOSPC:
7896                                 errstring = "Memory limit exhausted.";
7897                                 break;
7898                         case ETIME:
7899                                 errstring = "Timed out.";
7900                                 break;
7901                         case EPERM:
7902                                 errstring = "Permission denied. Channel "
7903                                     "programs must be run as root.";
7904                                 break;
7905                         default:
7906                                 (void) zfs_standard_error(g_zfs, ret, msg);
7907                         }
7908                 }
7909                 if (errstring != NULL)
7910                         (void) fprintf(stderr, "%s:\n%s\n", msg, errstring);
7911
7912                 if (ret == ETIME && instructions != 0)
7913                         (void) fprintf(stderr,
7914                             gettext("%llu Lua instructions\n"),
7915                             (u_longlong_t)instructions);
7916         } else {
7917                 if (json_output) {
7918                         (void) nvlist_print_json(stdout, outnvl);
7919                 } else if (nvlist_empty(outnvl)) {
7920                         (void) fprintf(stdout, gettext("Channel program fully "
7921                             "executed and did not produce output.\n"));
7922                 } else {
7923                         (void) fprintf(stdout, gettext("Channel program fully "
7924                             "executed and produced output:\n"));
7925                         dump_nvlist(outnvl, 4);
7926                 }
7927         }
7928
7929         free(progbuf);
7930         fnvlist_free(outnvl);
7931         fnvlist_free(argnvl);
7932         return (ret != 0);
7933
7934 usage:
7935         usage(B_FALSE);
7936         return (-1);
7937 }
7938
7939
7940 typedef struct loadkey_cbdata {
7941         boolean_t cb_loadkey;
7942         boolean_t cb_recursive;
7943         boolean_t cb_noop;
7944         char *cb_keylocation;
7945         uint64_t cb_numfailed;
7946         uint64_t cb_numattempted;
7947 } loadkey_cbdata_t;
7948
7949 static int
7950 load_key_callback(zfs_handle_t *zhp, void *data)
7951 {
7952         int ret;
7953         boolean_t is_encroot;
7954         loadkey_cbdata_t *cb = data;
7955         uint64_t keystatus = zfs_prop_get_int(zhp, ZFS_PROP_KEYSTATUS);
7956
7957         /*
7958          * If we are working recursively, we want to skip loading / unloading
7959          * keys for non-encryption roots and datasets whose keys are already
7960          * in the desired end-state.
7961          */
7962         if (cb->cb_recursive) {
7963                 ret = zfs_crypto_get_encryption_root(zhp, &is_encroot, NULL);
7964                 if (ret != 0)
7965                         return (ret);
7966                 if (!is_encroot)
7967                         return (0);
7968
7969                 if ((cb->cb_loadkey && keystatus == ZFS_KEYSTATUS_AVAILABLE) ||
7970                     (!cb->cb_loadkey && keystatus == ZFS_KEYSTATUS_UNAVAILABLE))
7971                         return (0);
7972         }
7973
7974         cb->cb_numattempted++;
7975
7976         if (cb->cb_loadkey)
7977                 ret = zfs_crypto_load_key(zhp, cb->cb_noop, cb->cb_keylocation);
7978         else
7979                 ret = zfs_crypto_unload_key(zhp);
7980
7981         if (ret != 0) {
7982                 cb->cb_numfailed++;
7983                 return (ret);
7984         }
7985
7986         return (0);
7987 }
7988
7989 static int
7990 load_unload_keys(int argc, char **argv, boolean_t loadkey)
7991 {
7992         int c, ret = 0, flags = 0;
7993         boolean_t do_all = B_FALSE;
7994         loadkey_cbdata_t cb = { 0 };
7995
7996         cb.cb_loadkey = loadkey;
7997
7998         while ((c = getopt(argc, argv, "anrL:")) != -1) {
7999                 /* noop and alternate keylocations only apply to zfs load-key */
8000                 if (loadkey) {
8001                         switch (c) {
8002                         case 'n':
8003                                 cb.cb_noop = B_TRUE;
8004                                 continue;
8005                         case 'L':
8006                                 cb.cb_keylocation = optarg;
8007                                 continue;
8008                         default:
8009                                 break;
8010                         }
8011                 }
8012
8013                 switch (c) {
8014                 case 'a':
8015                         do_all = B_TRUE;
8016                         cb.cb_recursive = B_TRUE;
8017                         break;
8018                 case 'r':
8019                         flags |= ZFS_ITER_RECURSE;
8020                         cb.cb_recursive = B_TRUE;
8021                         break;
8022                 default:
8023                         (void) fprintf(stderr,
8024                             gettext("invalid option '%c'\n"), optopt);
8025                         usage(B_FALSE);
8026                 }
8027         }
8028
8029         argc -= optind;
8030         argv += optind;
8031
8032         if (!do_all && argc == 0) {
8033                 (void) fprintf(stderr,
8034                     gettext("Missing dataset argument or -a option\n"));
8035                 usage(B_FALSE);
8036         }
8037
8038         if (do_all && argc != 0) {
8039                 (void) fprintf(stderr,
8040                     gettext("Cannot specify dataset with -a option\n"));
8041                 usage(B_FALSE);
8042         }
8043
8044         if (cb.cb_recursive && cb.cb_keylocation != NULL &&
8045             strcmp(cb.cb_keylocation, "prompt") != 0) {
8046                 (void) fprintf(stderr, gettext("alternate keylocation may only "
8047                     "be 'prompt' with -r or -a\n"));
8048                 usage(B_FALSE);
8049         }
8050
8051         ret = zfs_for_each(argc, argv, flags,
8052             ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, NULL, NULL, 0,
8053             load_key_callback, &cb);
8054
8055         if (cb.cb_noop || (cb.cb_recursive && cb.cb_numattempted != 0)) {
8056                 (void) printf(gettext("%llu / %llu key(s) successfully %s\n"),
8057                     (u_longlong_t)(cb.cb_numattempted - cb.cb_numfailed),
8058                     (u_longlong_t)cb.cb_numattempted,
8059                     loadkey ? (cb.cb_noop ? "verified" : "loaded") :
8060                     "unloaded");
8061         }
8062
8063         if (cb.cb_numfailed != 0)
8064                 ret = -1;
8065
8066         return (ret);
8067 }
8068
8069 static int
8070 zfs_do_load_key(int argc, char **argv)
8071 {
8072         return (load_unload_keys(argc, argv, B_TRUE));
8073 }
8074
8075
8076 static int
8077 zfs_do_unload_key(int argc, char **argv)
8078 {
8079         return (load_unload_keys(argc, argv, B_FALSE));
8080 }
8081
8082 static int
8083 zfs_do_change_key(int argc, char **argv)
8084 {
8085         int c, ret;
8086         uint64_t keystatus;
8087         boolean_t loadkey = B_FALSE, inheritkey = B_FALSE;
8088         zfs_handle_t *zhp = NULL;
8089         nvlist_t *props = fnvlist_alloc();
8090
8091         while ((c = getopt(argc, argv, "lio:")) != -1) {
8092                 switch (c) {
8093                 case 'l':
8094                         loadkey = B_TRUE;
8095                         break;
8096                 case 'i':
8097                         inheritkey = B_TRUE;
8098                         break;
8099                 case 'o':
8100                         if (!parseprop(props, optarg)) {
8101                                 nvlist_free(props);
8102                                 return (1);
8103                         }
8104                         break;
8105                 default:
8106                         (void) fprintf(stderr,
8107                             gettext("invalid option '%c'\n"), optopt);
8108                         usage(B_FALSE);
8109                 }
8110         }
8111
8112         if (inheritkey && !nvlist_empty(props)) {
8113                 (void) fprintf(stderr,
8114                     gettext("Properties not allowed for inheriting\n"));
8115                 usage(B_FALSE);
8116         }
8117
8118         argc -= optind;
8119         argv += optind;
8120
8121         if (argc < 1) {
8122                 (void) fprintf(stderr, gettext("Missing dataset argument\n"));
8123                 usage(B_FALSE);
8124         }
8125
8126         if (argc > 1) {
8127                 (void) fprintf(stderr, gettext("Too many arguments\n"));
8128                 usage(B_FALSE);
8129         }
8130
8131         zhp = zfs_open(g_zfs, argv[argc - 1],
8132             ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
8133         if (zhp == NULL)
8134                 usage(B_FALSE);
8135
8136         if (loadkey) {
8137                 keystatus = zfs_prop_get_int(zhp, ZFS_PROP_KEYSTATUS);
8138                 if (keystatus != ZFS_KEYSTATUS_AVAILABLE) {
8139                         ret = zfs_crypto_load_key(zhp, B_FALSE, NULL);
8140                         if (ret != 0) {
8141                                 nvlist_free(props);
8142                                 zfs_close(zhp);
8143                                 return (-1);
8144                         }
8145                 }
8146
8147                 /* refresh the properties so the new keystatus is visible */
8148                 zfs_refresh_properties(zhp);
8149         }
8150
8151         ret = zfs_crypto_rewrap(zhp, props, inheritkey);
8152         if (ret != 0) {
8153                 nvlist_free(props);
8154                 zfs_close(zhp);
8155                 return (-1);
8156         }
8157
8158         nvlist_free(props);
8159         zfs_close(zhp);
8160         return (0);
8161 }
8162
8163 /*
8164  * 1) zfs project [-d|-r] <file|directory ...>
8165  *    List project ID and inherit flag of file(s) or directories.
8166  *    -d: List the directory itself, not its children.
8167  *    -r: List subdirectories recursively.
8168  *
8169  * 2) zfs project -C [-k] [-r] <file|directory ...>
8170  *    Clear project inherit flag and/or ID on the file(s) or directories.
8171  *    -k: Keep the project ID unchanged. If not specified, the project ID
8172  *        will be reset as zero.
8173  *    -r: Clear on subdirectories recursively.
8174  *
8175  * 3) zfs project -c [-0] [-d|-r] [-p id] <file|directory ...>
8176  *    Check project ID and inherit flag on the file(s) or directories,
8177  *    report the outliers.
8178  *    -0: Print file name followed by a NUL instead of newline.
8179  *    -d: Check the directory itself, not its children.
8180  *    -p: Specify the referenced ID for comparing with the target file(s)
8181  *        or directories' project IDs. If not specified, the target (top)
8182  *        directory's project ID will be used as the referenced one.
8183  *    -r: Check subdirectories recursively.
8184  *
8185  * 4) zfs project [-p id] [-r] [-s] <file|directory ...>
8186  *    Set project ID and/or inherit flag on the file(s) or directories.
8187  *    -p: Set the project ID as the given id.
8188  *    -r: Set on subdirectories recursively. If not specify "-p" option,
8189  *        it will use top-level directory's project ID as the given id,
8190  *        then set both project ID and inherit flag on all descendants
8191  *        of the top-level directory.
8192  *    -s: Set project inherit flag.
8193  */
8194 static int
8195 zfs_do_project(int argc, char **argv)
8196 {
8197         zfs_project_control_t zpc = {
8198                 .zpc_expected_projid = ZFS_INVALID_PROJID,
8199                 .zpc_op = ZFS_PROJECT_OP_DEFAULT,
8200                 .zpc_dironly = B_FALSE,
8201                 .zpc_keep_projid = B_FALSE,
8202                 .zpc_newline = B_TRUE,
8203                 .zpc_recursive = B_FALSE,
8204                 .zpc_set_flag = B_FALSE,
8205         };
8206         int ret = 0, c;
8207
8208         if (argc < 2)
8209                 usage(B_FALSE);
8210
8211         while ((c = getopt(argc, argv, "0Ccdkp:rs")) != -1) {
8212                 switch (c) {
8213                 case '0':
8214                         zpc.zpc_newline = B_FALSE;
8215                         break;
8216                 case 'C':
8217                         if (zpc.zpc_op != ZFS_PROJECT_OP_DEFAULT) {
8218                                 (void) fprintf(stderr, gettext("cannot "
8219                                     "specify '-C' '-c' '-s' together\n"));
8220                                 usage(B_FALSE);
8221                         }
8222
8223                         zpc.zpc_op = ZFS_PROJECT_OP_CLEAR;
8224                         break;
8225                 case 'c':
8226                         if (zpc.zpc_op != ZFS_PROJECT_OP_DEFAULT) {
8227                                 (void) fprintf(stderr, gettext("cannot "
8228                                     "specify '-C' '-c' '-s' together\n"));
8229                                 usage(B_FALSE);
8230                         }
8231
8232                         zpc.zpc_op = ZFS_PROJECT_OP_CHECK;
8233                         break;
8234                 case 'd':
8235                         zpc.zpc_dironly = B_TRUE;
8236                         /* overwrite "-r" option */
8237                         zpc.zpc_recursive = B_FALSE;
8238                         break;
8239                 case 'k':
8240                         zpc.zpc_keep_projid = B_TRUE;
8241                         break;
8242                 case 'p': {
8243                         char *endptr;
8244
8245                         errno = 0;
8246                         zpc.zpc_expected_projid = strtoull(optarg, &endptr, 0);
8247                         if (errno != 0 || *endptr != '\0') {
8248                                 (void) fprintf(stderr,
8249                                     gettext("project ID must be less than "
8250                                     "%u\n"), UINT32_MAX);
8251                                 usage(B_FALSE);
8252                         }
8253                         if (zpc.zpc_expected_projid >= UINT32_MAX) {
8254                                 (void) fprintf(stderr,
8255                                     gettext("invalid project ID\n"));
8256                                 usage(B_FALSE);
8257                         }
8258                         break;
8259                 }
8260                 case 'r':
8261                         zpc.zpc_recursive = B_TRUE;
8262                         /* overwrite "-d" option */
8263                         zpc.zpc_dironly = B_FALSE;
8264                         break;
8265                 case 's':
8266                         if (zpc.zpc_op != ZFS_PROJECT_OP_DEFAULT) {
8267                                 (void) fprintf(stderr, gettext("cannot "
8268                                     "specify '-C' '-c' '-s' together\n"));
8269                                 usage(B_FALSE);
8270                         }
8271
8272                         zpc.zpc_set_flag = B_TRUE;
8273                         zpc.zpc_op = ZFS_PROJECT_OP_SET;
8274                         break;
8275                 default:
8276                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
8277                             optopt);
8278                         usage(B_FALSE);
8279                 }
8280         }
8281
8282         if (zpc.zpc_op == ZFS_PROJECT_OP_DEFAULT) {
8283                 if (zpc.zpc_expected_projid != ZFS_INVALID_PROJID)
8284                         zpc.zpc_op = ZFS_PROJECT_OP_SET;
8285                 else
8286                         zpc.zpc_op = ZFS_PROJECT_OP_LIST;
8287         }
8288
8289         switch (zpc.zpc_op) {
8290         case ZFS_PROJECT_OP_LIST:
8291                 if (zpc.zpc_keep_projid) {
8292                         (void) fprintf(stderr,
8293                             gettext("'-k' is only valid together with '-C'\n"));
8294                         usage(B_FALSE);
8295                 }
8296                 if (!zpc.zpc_newline) {
8297                         (void) fprintf(stderr,
8298                             gettext("'-0' is only valid together with '-c'\n"));
8299                         usage(B_FALSE);
8300                 }
8301                 break;
8302         case ZFS_PROJECT_OP_CHECK:
8303                 if (zpc.zpc_keep_projid) {
8304                         (void) fprintf(stderr,
8305                             gettext("'-k' is only valid together with '-C'\n"));
8306                         usage(B_FALSE);
8307                 }
8308                 break;
8309         case ZFS_PROJECT_OP_CLEAR:
8310                 if (zpc.zpc_dironly) {
8311                         (void) fprintf(stderr,
8312                             gettext("'-d' is useless together with '-C'\n"));
8313                         usage(B_FALSE);
8314                 }
8315                 if (!zpc.zpc_newline) {
8316                         (void) fprintf(stderr,
8317                             gettext("'-0' is only valid together with '-c'\n"));
8318                         usage(B_FALSE);
8319                 }
8320                 if (zpc.zpc_expected_projid != ZFS_INVALID_PROJID) {
8321                         (void) fprintf(stderr,
8322                             gettext("'-p' is useless together with '-C'\n"));
8323                         usage(B_FALSE);
8324                 }
8325                 break;
8326         case ZFS_PROJECT_OP_SET:
8327                 if (zpc.zpc_dironly) {
8328                         (void) fprintf(stderr,
8329                             gettext("'-d' is useless for set project ID and/or "
8330                             "inherit flag\n"));
8331                         usage(B_FALSE);
8332                 }
8333                 if (zpc.zpc_keep_projid) {
8334                         (void) fprintf(stderr,
8335                             gettext("'-k' is only valid together with '-C'\n"));
8336                         usage(B_FALSE);
8337                 }
8338                 if (!zpc.zpc_newline) {
8339                         (void) fprintf(stderr,
8340                             gettext("'-0' is only valid together with '-c'\n"));
8341                         usage(B_FALSE);
8342                 }
8343                 break;
8344         default:
8345                 ASSERT(0);
8346                 break;
8347         }
8348
8349         argv += optind;
8350         argc -= optind;
8351         if (argc == 0) {
8352                 (void) fprintf(stderr,
8353                     gettext("missing file or directory target(s)\n"));
8354                 usage(B_FALSE);
8355         }
8356
8357         for (int i = 0; i < argc; i++) {
8358                 int err;
8359
8360                 err = zfs_project_handle(argv[i], &zpc);
8361                 if (err && !ret)
8362                         ret = err;
8363         }
8364
8365         return (ret);
8366 }
8367
8368 static int
8369 zfs_do_wait(int argc, char **argv)
8370 {
8371         boolean_t enabled[ZFS_WAIT_NUM_ACTIVITIES];
8372         int error, i;
8373         char c;
8374
8375         /* By default, wait for all types of activity. */
8376         for (i = 0; i < ZFS_WAIT_NUM_ACTIVITIES; i++)
8377                 enabled[i] = B_TRUE;
8378
8379         while ((c = getopt(argc, argv, "t:")) != -1) {
8380                 switch (c) {
8381                 case 't':
8382                 {
8383                         static char *col_subopts[] = { "deleteq", NULL };
8384                         char *value;
8385
8386                         /* Reset activities array */
8387                         bzero(&enabled, sizeof (enabled));
8388                         while (*optarg != '\0') {
8389                                 int activity = getsubopt(&optarg, col_subopts,
8390                                     &value);
8391
8392                                 if (activity < 0) {
8393                                         (void) fprintf(stderr,
8394                                             gettext("invalid activity '%s'\n"),
8395                                             value);
8396                                         usage(B_FALSE);
8397                                 }
8398
8399                                 enabled[activity] = B_TRUE;
8400                         }
8401                         break;
8402                 }
8403                 case '?':
8404                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
8405                             optopt);
8406                         usage(B_FALSE);
8407                 }
8408         }
8409
8410         argv += optind;
8411         argc -= optind;
8412         if (argc < 1) {
8413                 (void) fprintf(stderr, gettext("missing 'filesystem' "
8414                     "argument\n"));
8415                 usage(B_FALSE);
8416         }
8417         if (argc > 1) {
8418                 (void) fprintf(stderr, gettext("too many arguments\n"));
8419                 usage(B_FALSE);
8420         }
8421
8422         zfs_handle_t *zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_FILESYSTEM);
8423         if (zhp == NULL)
8424                 return (1);
8425
8426         for (;;) {
8427                 boolean_t missing = B_FALSE;
8428                 boolean_t any_waited = B_FALSE;
8429
8430                 for (int i = 0; i < ZFS_WAIT_NUM_ACTIVITIES; i++) {
8431                         boolean_t waited;
8432
8433                         if (!enabled[i])
8434                                 continue;
8435
8436                         error = zfs_wait_status(zhp, i, &missing, &waited);
8437                         if (error != 0 || missing)
8438                                 break;
8439
8440                         any_waited = (any_waited || waited);
8441                 }
8442
8443                 if (error != 0 || missing || !any_waited)
8444                         break;
8445         }
8446
8447         zfs_close(zhp);
8448
8449         return (error);
8450 }
8451
8452 /*
8453  * Display version message
8454  */
8455 static int
8456 zfs_do_version(int argc, char **argv)
8457 {
8458         if (zfs_version_print() == -1)
8459                 return (1);
8460
8461         return (0);
8462 }
8463
8464 int
8465 main(int argc, char **argv)
8466 {
8467         int ret = 0;
8468         int i = 0;
8469         char *cmdname;
8470         char **newargv;
8471
8472         (void) setlocale(LC_ALL, "");
8473         (void) setlocale(LC_NUMERIC, "C");
8474         (void) textdomain(TEXT_DOMAIN);
8475
8476         opterr = 0;
8477
8478         /*
8479          * Make sure the user has specified some command.
8480          */
8481         if (argc < 2) {
8482                 (void) fprintf(stderr, gettext("missing command\n"));
8483                 usage(B_FALSE);
8484         }
8485
8486         cmdname = argv[1];
8487
8488         /*
8489          * The 'umount' command is an alias for 'unmount'
8490          */
8491         if (strcmp(cmdname, "umount") == 0)
8492                 cmdname = "unmount";
8493
8494         /*
8495          * The 'recv' command is an alias for 'receive'
8496          */
8497         if (strcmp(cmdname, "recv") == 0)
8498                 cmdname = "receive";
8499
8500         /*
8501          * The 'snap' command is an alias for 'snapshot'
8502          */
8503         if (strcmp(cmdname, "snap") == 0)
8504                 cmdname = "snapshot";
8505
8506         /*
8507          * Special case '-?'
8508          */
8509         if ((strcmp(cmdname, "-?") == 0) ||
8510             (strcmp(cmdname, "--help") == 0))
8511                 usage(B_TRUE);
8512
8513         /*
8514          * Special case '-V|--version'
8515          */
8516         if ((strcmp(cmdname, "-V") == 0) || (strcmp(cmdname, "--version") == 0))
8517                 return (zfs_do_version(argc, argv));
8518
8519         if ((g_zfs = libzfs_init()) == NULL) {
8520                 (void) fprintf(stderr, "%s\n", libzfs_error_init(errno));
8521                 return (1);
8522         }
8523
8524         mnttab_file = g_zfs->libzfs_mnttab;
8525
8526         zfs_save_arguments(argc, argv, history_str, sizeof (history_str));
8527
8528         libzfs_print_on_error(g_zfs, B_TRUE);
8529
8530         /*
8531          * Many commands modify input strings for string parsing reasons.
8532          * We create a copy to protect the original argv.
8533          */
8534         newargv = malloc((argc + 1) * sizeof (newargv[0]));
8535         for (i = 0; i < argc; i++)
8536                 newargv[i] = strdup(argv[i]);
8537         newargv[argc] = NULL;
8538
8539         /*
8540          * Run the appropriate command.
8541          */
8542         libzfs_mnttab_cache(g_zfs, B_TRUE);
8543         if (find_command_idx(cmdname, &i) == 0) {
8544                 current_command = &command_table[i];
8545                 ret = command_table[i].func(argc - 1, newargv + 1);
8546         } else if (strchr(cmdname, '=') != NULL) {
8547                 verify(find_command_idx("set", &i) == 0);
8548                 current_command = &command_table[i];
8549                 ret = command_table[i].func(argc, newargv);
8550         } else {
8551                 (void) fprintf(stderr, gettext("unrecognized "
8552                     "command '%s'\n"), cmdname);
8553                 usage(B_FALSE);
8554                 ret = 1;
8555         }
8556
8557         for (i = 0; i < argc; i++)
8558                 free(newargv[i]);
8559         free(newargv);
8560
8561         if (ret == 0 && log_history)
8562                 (void) zpool_log_history(g_zfs, history_str);
8563
8564         libzfs_fini(g_zfs);
8565
8566         /*
8567          * The 'ZFS_ABORT' environment variable causes us to dump core on exit
8568          * for the purposes of running ::findleaks.
8569          */
8570         if (getenv("ZFS_ABORT") != NULL) {
8571                 (void) printf("dumping core by request\n");
8572                 abort();
8573         }
8574
8575         return (ret);
8576 }
8577
8578 #ifdef __FreeBSD__
8579 #include <sys/jail.h>
8580 #include <jail.h>
8581 /*
8582  * Attach/detach the given dataset to/from the given jail
8583  */
8584 /* ARGSUSED */
8585 static int
8586 zfs_do_jail_impl(int argc, char **argv, boolean_t attach)
8587 {
8588         zfs_handle_t *zhp;
8589         int jailid, ret;
8590
8591         /* check number of arguments */
8592         if (argc < 3) {
8593                 (void) fprintf(stderr, gettext("missing argument(s)\n"));
8594                 usage(B_FALSE);
8595         }
8596         if (argc > 3) {
8597                 (void) fprintf(stderr, gettext("too many arguments\n"));
8598                 usage(B_FALSE);
8599         }
8600
8601         jailid = jail_getid(argv[1]);
8602         if (jailid < 0) {
8603                 (void) fprintf(stderr, gettext("invalid jail id or name\n"));
8604                 usage(B_FALSE);
8605         }
8606
8607         zhp = zfs_open(g_zfs, argv[2], ZFS_TYPE_FILESYSTEM);
8608         if (zhp == NULL)
8609                 return (1);
8610
8611         ret = (zfs_jail(zhp, jailid, attach) != 0);
8612
8613         zfs_close(zhp);
8614         return (ret);
8615 }
8616
8617 /*
8618  * zfs jail jailid filesystem
8619  *
8620  * Attach the given dataset to the given jail
8621  */
8622 /* ARGSUSED */
8623 static int
8624 zfs_do_jail(int argc, char **argv)
8625 {
8626         return (zfs_do_jail_impl(argc, argv, B_TRUE));
8627 }
8628
8629 /*
8630  * zfs unjail jailid filesystem
8631  *
8632  * Detach the given dataset from the given jail
8633  */
8634 /* ARGSUSED */
8635 static int
8636 zfs_do_unjail(int argc, char **argv)
8637 {
8638         return (zfs_do_jail_impl(argc, argv, B_FALSE));
8639 }
8640 #endif